Description:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See Section 10 and Rule 13)
A GEAR SHIFT ASSEMBLY AND A GUIDE MEMBER THEREOF
APPLICANT:
TVS MOTOR COMPANY LIMITED, an Indian Company at: “Chaitanya”,
No.12 Khader Nawaz Khan Road, Nungambakkam, Chennai 600 006.
The following specification particularly describes the invention and the manner in
which it is to be performed.
2
TECHNICAL FIELD
[0001] The present subject matter relates generally to a gear shift assembly of a
vehicle and a guide member thereof. More particularly but not exclusively, the
present subject matter relates to a gear shift assembly and a guide member for a two5 wheeled vehicle.
BACKGROUND
[0002] Conventionally, in a two-wheeled vehicle with a gear box, a gear shift
mechanism is used to switch from one gear to another gear. The gear shifting system
10 uses two plates for achieving the gear shift, one plate is called an arm gear shift plate
and another plate is called a drive cam gear shift plate. Here, the drive cam gear shift
plate is integrally attached to the gear shift shaft, so the drive cam gear shift plate
cannot move relative to the gear shift shaft. Whereas, the arm gear shift plate is
riveted to the drive plate cam gear shift plate in such a way that it can move in an
15 upward and downward direction with respect to the gear shift shaft. As the arm gear
shift plate is riveted to the drive cam gear shift plate, the arm gear shift plate also
rotates with the drive cam gear shift plate to rotate a gear selector when the gear
shift shaft is rotated while shifting the gear.
At the time of shifting the gear, this arm gear shift plate rotates with the drive cam
20 gear shift plate and also moves in the upward and downward direction to actuate and
rotate the gear selector. This upward and downward movement of the arm gear shift
plate is controlled by a small spring placed below the arm gear shift plate. Adjacent
to this assembly, a spring guide is disposed. The spring guide secures a position of
a return spring. The return spring reinstate the arm gear shift plate and the drive cam
25 gear shift plate to an original position after the rotation of the gear selector is
achieved. The spring guide is an axis symmetric part and there is a chance for this
part to rotate with respect to the gear shift shaft. If spring guide rotates, there is a
chance for the spring guide to foul/engage with the spring placed below the arm gear
shift plate and not allowing the spring to perform its function properly.
30 Consequently, this may affect the upwards and downward movement of the arm
gear shift plate. This causes problem in gear shifting or leads to wrong shifting of
3
the gear or the gear shifting may not happen properly. Therefore, a smooth gear shift
while switching the gear is obstructed. In order to overcome above cited problem,
the present invention discloses a gear shift assembly and a guide member thereof.
5 SUMMARY OF THE INVENTION
[0003] The present subject matter relates to a guide member for a gear shift
assembly of a vehicle. The guide member comprises a bore, an outer surface, an
indentation, and one or more limbs. The bore is configured to receive and
accommodate a gear shift shaft of the gear shift assembly. The outer surface is
10 configured to receive a first spring. The indentation is provided on a second edge of
the outer surface. The one or more limbs are provided on one mor more sides of the
indentation. The one or more limbs are configured to engage with one or more
components of the gear shift assembly to restrict a rotational movement of the guide
member around the rotational axis (X-X).
15 [0004] The present subject matter also relates to a gear shift assembly of a vehicle.
The gear shift assembly comprises a gear shift shaft, a first plate member, a second
plate member, a first spring, and a guide member. The gear shift shaft is configured
to rotate around a rotational axis (X-X). The first plate member is connected to the
gear shift shaft in order to rotate between a first position and a second position with
20 the gear shift shaft around the rotational axis (X-X). The rotational axis (X-X) is
perpendicular to the first plate member. The second plate member is attached to the
first plate member. The second plate member is configured to reciprocatively move,
with respect to the first plate member and the gear shift shaft, along an axis (YY) in
order to engage with a gear selector. The axis (YY) is perpendicular to the rotational
25 axis (X-X). The second plate member is configured to rotate the gear selector upon
being rotated with the first plate member around the rotational axis (X-X). The first
spring is configured to reinstate the first plate member and the second plate member
to the first position after the rotation of the gear selector. The guide member
comprises a bore, an outer surface, an indentation, and a one or more limbs. The
30 bore is configured to receive and accommodate the gear shift shaft. The outer surface
is configured to receive the first spring. The indentation is provided on a second
4
edge of the outer surface. One or more limbs are provided on one or more sides of
the indentation. The one or more limbs are configured to engage with one or more
components of the gear shift assembly to restrict a rotational movement of the guide
member around the rotational axis (X-X).
5
BRIEF DESCRIPTION OF THE DRAWINGS
[0005] The details are described with reference to an embodiment of a gear shift
assembly of a vehicle and a guide member thereof. The same numbers are used
throughout the drawings to refer similar features and components.
10 [0006] Figure 1a illustrates a side perspective view of the guide member from a
first side of the guide member.
[0007] Figure 1b illustrates a side perspective view of the guide member from a
second side of the guide member.
[0008] Figure 2 illustrates a side perspective view of the gear shift assembly.
15 [0009] Figure 3 illustrates an exploded view of the gear shift assembly.
[0010] Figure 4a illustrates a side view of the gear shift assembly.
[0011] Figure 4b illustrates a sectional view of the gear shift assembly along axis
A-A shown in the Figure 4a.
[0012] Figure 5 illustrates a side perspective view of the gear shift assembly in a
20 gear box.
[0013] Figure 6 illustrates a side perspective view of the gear shift assembly.
DETAILED DESCRIPTION
[0014] In order to overcome one or more of the above-mentioned challenges, the
25 present invention arrests the rotation of the spring guide to prevent engagement of
the spring guide part with a spring placed below the arm gear shift plate. Therefore,
the disclosed invention ensures selection of intended gear only, in order to prevent
wrong shifting of the gears. Further, the disclosed invention enables smooth and
unobstructed shifting of the gears.
30 [0015] As per one embodiment of the invention, the invention relates to a guide
member for a gear shift assembly of a vehicle. The guide member comprises a bore,
5
an outer surface, an indentation, and a one or more limbs. The bore is configured to
receive and accommodate a gear shift shaft of the gear shift assembly. The outer
surface is configured to receive a first spring. The indentation is provided on a
second edge of the outer surface. One or more limbs are provided on one more sides
5 of the indentation. The one or more limbs are configured to engage with one or more
components of the gear shift assembly to restrict a rotational movement of the guide
member around the rotational axis (X-X) of the gear shift shaft.
[0016] As per one embodiment of the invention, the gear shift assembly comprises
a first plate member, and a second plate member. The first plate member is
10 connected to the gear shift shaft in order to rotate between a first position and a
second position with the gear shift shaft around the rotational axis (X-X). The
rotational axis (X-X) is perpendicular to the first plate member. The second plate
member is attached to the first plate member. The second plate member is
configured to reciprocatively move, with respect to the first plate member, along an
15 axis (YY), in order to engage with a gear selector. The axis (YY) is perpendicular
to the rotational axis (X-X). The second plate member is configured to rotate the
gear selector upon being rotated with the first plate member around the rotational
axis (X-X).
[0017] As per one embodiment of the invention, the first spring is configured to
20 reinstate the first plate member and the second plate member to the first position
after the rotation of the gear selector. A second spring is disposed below the second
plate member. The second spring is configured to control reciprocating movement
of the second plate member along the axis (YY).
[0018] As per one embodiment of the invention, the second plate member is
25 attached to the first plate member in a parallel orientation with respect to the first
plate member through a plurality of fastening members.
[0019] As per one embodiment of the invention, the one or more limbs comprise a
first limb and a second limb. The first limb is parallel to the second limb in order to
accommodate one of the plurality of fastening members amidst the first limb and
30 the second limb. Thus, restricting the rotational movement of the guide member
around the rotational axis (X-X).
6
[0020] As per one embodiment of the invention, the guide member comprises a first
protrusion and a second protrusion. The first protrusion is provided on a first edge
of the outer surface. The second protrusion is provided on the second edge of the
outer surface. The first protrusion and the second protrusion are configured to
5 restrict a linear movement of the first spring along a rotational axis (X-X) of the gear
shift shaft.
[0021] In another embodiment, the invention relates to a gear shift assembly of a
vehicle. The gear shift assembly comprises a gear shift shaft, a first plate member,
a second plate member, a first spring, and a guide member. The gear shift shaft is
10 configured to rotate around a rotational axis (X-X). The first plate member is
connected to the gear shift shaft in order to rotate between a first position and a
second position with the gear shift shaft around the rotational axis (X-X). The
rotational axis (X-X) is perpendicular to the first plate member. The second plate
member is attached to the first plate member. The second plate member is
15 configured to reciprocatively move, with respect to the first plate member and the
gear shift shaft, along an axis (YY) in order to engage with a gear selector. The axis
(YY) is perpendicular to the rotational axis (X-X). The second plate member is
configured to rotate the gear selector upon being rotated with the first plate member
around the rotational axis (X-X). The first spring is configured to reinstate the first
20 plate member and the second plate member to the first position after the rotation of
the gear selector. The guide member comprises a bore, an outer surface, an
indentation, and one or more limbs. The bore is configured to receive and
accommodate the gear shift shaft. The outer surface is configured to receive the first
spring. The indentation is provided on a second edge of the outer surface. The one
25 or more limbs are provided on one or more side of the indentation. The one or more
limbs are configured to engage with one or more components of the gear shift
assembly to restrict a rotational movement of the guide member around the
rotational axis (X-X).
[0022] As per another embodiment of the invention, the second plate member is
30 attached to the first plate member in a parallel orientation with respect to the first
plate member by using a plurality of fastening members.
7
[0023] As per another embodiment of the invention, the one or more limbs
comprise a first limb and a second limb. The first limb is parallel to the second limb
in order to accommodate one of the plurality of fastening members amidst the first
limb and the second limb. Thus, restricting the rotational movement of the guide
5 member around the rotational axis (X-X).
[0024] As per another embodiment of the invention, the guide member comprises a
first protrusion and a second protrusion. The first protrusion is provided on a first
edge of the outer surface. The second protrusion is provided on the second edge of
the outer surface. The first protrusion and the second protrusion are configured to
10 restrict a linear movement of the first spring along a rotational axis (X-X) of the gear
shift shaft. As per another embodiment of the invention, the gear selector is provided
with a plurality of pins in order to selectively engage with a hook portion of the
second plate member.
[0025] As per another embodiment of the invention, the gear selector is coupled
15 with a gear shift drum. The gear shift drum is provided with a plurality of grooves
in order to engage with a plurality of shift forks. The plurality of shift forks is
configured to shift a plurality of gears upon a rotation of the gear shift drum.
[0026] As per another embodiment of the invention, a second spring is disposed
below the second plate member. The second spring is configured to control
20 reciprocating movement of the second plate member along the axis (YY).
[0027] The embodiments of the present invention will now be described in detail
with reference to an embodiment of a gear shift assembly (200) of a vehicle and a
guide member (200) thereof, along with the accompanying drawings. The
embodiments described hereunder relates to a two-wheeled vehicle. However, the
25 disclosed invention is not limited to the present embodiments as can be worked with
any two-wheeled vehicles, three-wheeled vehicles, four-wheeled vehicles in which
a spring guide is required to secure a position of a spring.
[0028] The embodiments shown in Figure 1a, Figure 1b, Figure 2, Figure 3,
Figure 4a and Figure 4b are taken together for discussion. Figure 1a illustrates a
30 side perspective view of the guide member (400) from a first side of the guide
member (400). Figure 1b illustrates a side perspective view of the guide member
8
(400) from a second side of the guide member (400). Figure 2 illustrates a side
perspective view of the gear shift assembly (200). Figure 3 illustrates an exploded
view of the gear shift assembly (200). Figure 4a illustrates a side view of the gear
shift assembly (200). Figure 4b illustrates a sectional view of the gear shift
5 assembly (200) along an axis A-A shown in the Figure 4a.
[0029] One of the embodiments of disclosed invention relates to a guide member
(400) for a gear shift assembly (200) of a vehicle. The gear shift assembly (200)
comprises a first plate member (301), and a second plate member (302). The guide
member (400) secures a position of a firstspring (202). Therefore, the guide member
10 guides the first spring (202). The guide member (400) provides a space to a plurality
of coils of the first spring (202) to expand and contract. Therefore, the guide member
also acts as a spacer. The guide member (400) comprises a bore (401), an outer
surface (402), an indentation (403), and a one or more limbs (404A, 404B). The bore
(401) receives and accommodates a gear shift shaft (201) of the gear shift assembly
15 (200).
[0030] The outer surface (402) receives the first spring (202). In a preferred
embodiment, the first spring (202) is a torsion spring. The first spring (202) wraps
at least a portion of the outer surface (402). The indentation (403) is provided on a
second edge (402S) of the outer surface (402). The indentation (403) allows a second
20 spring (203) to work freely by preventing a contact of the second spring (203) with
the guide member (400). A one or more limbs (404A, 404B) are provided on the
one or more side of the indentation (403).
[0031] The one or more limbs (404A, 404B) engages with one or more components
of the gear shift assembly (200) to restrict a rotational movement of the guide
25 member (400) around the rotational axis (X-X) of the gear shift shaft (201). In a
preferred embodiment, the one or more components of the gear shift assembly (200)
is one of the plurality of fastening members (204A,204B). However, rotational
movement of the guide member (400) can be restricted by engaging one or more
limbs (404A, 404B) with other components of the gear shift assembly (200), such
30 as but not limited to a plurality of protrusions on the first plate member (301). The
plurality of protrusions can be provided between the one or more limbs (404A,
9
404B). The disclosed configuration provides a wide array of advantages over
relevant prior arts. The possible embodiments of the present invention, not only
restricts clockwise rotation of the guide member (400) but also an anti- clockwise
rotation with respect to the rotational axis (X-X). Therefore, a position and an
5 orientation of the first spring (202) and the second spring (203) remains undisturbed.
Further, a contraction and relaxation of the coils of the first spring (202) and the
second spring (203) is not obstructed due to the rotation of the guide member (400).
Therefore, a smooth actuation of the second plate member (302) is achieved.
[0032] The first plate member (301) is connected to the gear shift shaft (201) such
10 that the first plate member (301) rotates between a first position and a second
position with the gear shift shaft (201) around the rotational axis (X-X). The
rotational axis (X-X) is perpendicular to the first plate member (301). The first
position is the position of the first plate member (301) and the second plate member
(302) toward which the first spring (202) applies torsional forces due to a natural
15 bias. On the other hand, second position is the position towards which the first plate
member (301) and the second plate member (302) are moved against the natural bias
of the torsional forces applied by the first spring (202). The second position depends
upon the degree of rotation of the gear shift shaft (201), either in clockwise direction
or in anti-clockwise direction with respect to the rotational axis (X-X). The degree
20 of rotation depends upon the gear to be selected by the user of the vehicle. The
second plate member (302) is attached to the first plate member (301). The second
plate member (302) moves reciprocatively, with respect to the first plate member
(301), along an axis (YY), in order to engage with a gear selector (303). The axis
(YY) is perpendicular to the rotational axis (X-X). The second spring (203) is
25 disposed below the second plate member (302). The second spring (203) controls
the reciprocating movement of the second plate member (302) along the axis (YY).
In a preferred embodiment, the second spring (203) is a tension spring. The
advantage of this configuration is that the second plate member (302) is in the
continuous engagement with the gear selector (303). This is because the second
30 spring (203) bias the second plate member (302) upward towards the gear selector
10
(303). This configuration enables the selective engagement of the second plate
member (302) with the gear selector (303).
[0033] The first plate member (301) and the second plate member (302) are
provided with a first opening and a second opening respectively. The first opening
5 coaxially aligns with the second opening in order to receive gear shift shaft (201).
Further, the second spring (203) is disposed in the second opening such that the axis
of the second spring (203) is perpendicular to the gear shift shaft (201). Also, the
first plate member (301) and the second plate member (302) are provided with a
plurality of first slots and a plurality of second slots respectively. The plurality of
10 first slot coaxially aligns with the plurality of second slots in order receive the
plurality of fastening members (204A,204B). A profile of the plurality of first slots
and a profile of the plurality of second slots enable the reciprocating motion of the
second plate member (302) with respect to the first plate member (301) along with
securing the attachment between the first plate member (301) and the plate member
15 (302). The free end of the second plate member (302) is provided with a hook
portion (302H). The hook portion (302H) selectively engages with the plurality of
pins (303P) of the plurality of pins (303P).
[0034] The second plate member (302) rotates the gear selector (303) upon being
rotated with the first plate member (301) around the rotational axis (X-X). The first
20 spring (202) reinstates the first plate member (301) and the second plate member
(302) to the first position after the rotation of the gear selector (303) due to the
natural bias of the first spring (202) towards the first position. The advantage of this
configuration is that the first plate member (301) and the second plate member (302)
can be actuated again for another cycle of the gear shifting.
25 [0035] The second plate member (302) is attached to the first plate member (301)
in a parallel orientation with respect to the first plate member (301). The second
plate member (302) is attached to the first plate member (301) through a plurality of
fastening members (204A, 204B). In a preferred embodiment, the plurality of
fastening members (204A, 204B) includes but not limited to a plurality of rivets.
30 The advantage of this configuration is that the plurality of fastening members (204A,
204B) not only secure a mounting of the second plate member (302) on to the first
11
plate member (301) but also it allows the reciprocating movement of the second
plate member (302) along the axis (YY, shown in Fig. 3).
[0036] The one or more limbs (404A, 404B) comprise a first limb (404A) and a
second limb (404B). The first limb (404A) is parallel to the second limb (404B) in
5 order to accommodate one of the plurality of fastening members (204A,204B)
amidst the first limb (404A) and the second limb (404B). The plurality of fastening
members (204A,204B) comprises a first fastening member (204A) and a second
fastening member (204B). In a preferred embodiment, the first limb (404A) and the
second limb (404B) accommodate the second fastening member (204B). The
10 advantage of this configuration is that the rotational movement of the guide member
(400) around the rotational axis (X-X) is restricted both in clockwise and anticlockwise direction around the rotational axis (X-X).
[0037] The guide member (400) comprises a first protrusion (402F-P) and a second
protrusion (402S-P). The first protrusion (402F-P) is provided on a first edge (402F)
15 of the outer surface (402). The second protrusion (402S-P) is provided on the second
edge (402S) of the outer surface (402). The advantage of this configuration is that
the first protrusion (402F-P) and the second protrusion (402S-P) restrict a linear
movement of the first spring (202) along a rotational axis (X-X) of the gear shift
shaft (201).
20 [0038] The embodiments shown in Figure 5 and Figure 6 are taken together for
discussion. Figure 5 illustrates a side perspective view of the gear shift assembly
(200) in a gear box. Figure 6 illustrates a side perspective view of the gear shift
assembly (200). The invention further relates to a gear shift assembly (200) of a
vehicle. The gear shift assembly (200) comprises a gear shift shaft (201), a first plate
25 member (301), a second plate member (302), a first spring (202), and a guide
member (400). The gear shift shaft (201) rotates around a rotational axis (X-X). The
first plate member (301) is connected to the gear shift shaft (201) in order to rotate
between a first position and a second position with the gear shift shaft (201) around
the rotational axis (X-X). The rotational axis (X-X) is perpendicular to the first plate
30 member (301). The second plate member (302) is attached to the first plate member
(301). The second plate member (302) moves reciprocatively, with respect to the
12
first plate member (301) and the gear shift shaft (201). The second plate member
(302) moves reciprocatively along an axis (YY, shown in Fig. 3) in order to engage
with a gear selector (303). A second spring (203) is disposed below the second plate
member (302). The second spring (203) controls the reciprocating movement of the
5 second plate member (302) along the axis (YY). The axis (YY) is perpendicular to
the rotational axis (X-X).
[0039] The second plate member (302) rotates the gear selector (303) upon being
rotated with the first plate member (301) around the rotational axis (X-X). The first
spring (202) reinstates the first plate member (301) and the second plate member
10 (302) to the first position after the rotation of the gear selector (303). The guide
member (400) comprises a bore (401), an outer surface (402), an indentation (403),
and a one or more limbs (404A, 404B). The bore (401) receives and accommodates
the gear shift shaft (201). The outer surface (402) receives the first spring (202). The
indentation (403) is provided on a second edge (402S) of the outer surface (402).
15 The one or more limbs (404A, 404B) is provided on the one or more side of the
indentation (403). The one or more limbs (404A, 404B) engages with one or more
components of the gear shift assembly (200) to restrict a rotational movement of the
guide member (400) around the rotational axis (X-X). The gear shift shaft (201) is
rotated by a lever upon receiving a user input. The lever is accessible to a user of
20 vehicle in order to receive the user input. The lever can be foot operated lever or a
hand operated lever, depending upon configuration of the vehicle.
[0040] The second plate member (302) is attached to the first plate member (301)
in a parallel orientation with respect to the first plate member (301) by using a
plurality of fastening members (204A,204B). The one or more limbs (404A, 404B)
25 comprise a first limb (404A) and a second limb (404B). The first limb (404A) is
parallel to the second limb (404B) to accommodate one of the plurality of fastening
members (204A,204B) amidst the first limb (404A) and the second limb (404B).
This restricts the rotational movement of the guide member (400) around the
rotational axis (X-X).
30 [0041] The guide member (400) comprises a first protrusion (402F-P) and a second
protrusion (402S-P). The first protrusion (402F-P) is provided on a first edge (402F)
13
of the outer surface (402). The second protrusion (402S-P) is provided on the second
edge (402S) of the outer surface (402). The first protrusion (402F-P) and the second
protrusion (402S-P) a linear movement of the first spring (202) along a rotational
axis (X-X) of the gear shift shaft (201).
5 [0042] The gear selector (303) is provided with a plurality of pins (303P). The
plurality of pins (303P) engages with a hook portion (302H) of the second plate
member (302). In a preferred embodiment, the gear selector (303) is a gear shift star.
The gear selector (303) is coupled with a gear shift drum (304). The gear shift drum
(304) is provided with a plurality of grooves (304G) which engages with a plurality
10 of shift forks (305). The plurality of shift forks (305) shifts a plurality of gears (306)
when the gear shift drum (304) is rotated.
[0043] The advantages of the present invention include but not limited to the
restriction of a linear movement of the first spring (202), along the rotational axis
(X-X) of the gear shift shaft (201), by the novel and inventive guide member (400)
15 and the gear shift assembly (200). The disclosed guide member (400) and the gear
shift assembly (200), not only restricts clockwise rotation of the guide member (400)
but also an anti- clockwise rotation with respect to the rotational axis (X-X).
Therefore, a position and an orientation of the first spring (202) and the second
spring (203) remains undisturbed. Further, a contraction and relaxation of the coils
20 of the first spring (202) and the second spring (203) is not obstructed due to the
rotation of the guide member (400). Therefore, the disclosed invention ensures
selection of intended gear only, in order to prevent wrong shifting of the gears.
Further, the disclosed invention enables smooth and unobstructed shifting of the
gears. As a consequence, the present disclosure also enhances safety in shifting gears
25 as any disturbance or interreference during shifting gears can cause annoyance
distract a driver causing safety concerns including accidents. The smooth shifting
operation achieved due to the present invention also contributes to better
performance of the shifting assembly and consequently the transmission assembly
avoiding any lags in torque transmission. This also improves the overall energy
30 efficiency of vehicle. Even during assembly or removal of the shifting assembly, the
avoidance of interference between the guide member and the springs provides
14
comfort and convenience to the personnel thereby improving ease of assembly.
Lastly, the present invention also contributes in prolonging the life of the gear
shifting mechanism due minimal interference and fouling of components.
[0044] The present disclosed invention relates to a gear shift assembly (200) of a
5 vehicle and a guide member (400) thereof. Embodiments illustrated in the present
invention can be worked with any two-wheeled vehicles, three-wheeled vehicles,
four-wheeled vehicles in which a spring guide is required to secure a position of a
spring. Further, the disclosed invention is not limited to the aforementioned
embodiments. For example, as used in this specification and the appended claims,
10 the singular forms “a,” “an” and “they” can include plural referents unless the
content clearly indicates otherwise. Further, when introducing
elements/components/etc. of the assembly/system described and/or illustrated
herein, the articles “a”, “an”, “the”, and “said” are intended to mean that there is one
or more of the element(s)/component(s)/etc. The terms “comprising”, “including”,
15 and “having” are intended to be inclusive and mean that there may be additional
element(s)/component(s)/etc. other than the listed element(s)/component(s)/etc.
[0045] This written description uses examples to provide details on the disclosure,
including the best mode, and also to enable any person skilled in the art to practice
the disclosure, including making and using any devices or systems. The scope of the
20 disclosure is defined by the claims, and may include other examples that occur to
those skilled in the art. Such other examples are intended to be within the scope of
the claims if they have structural elements that do not differ from the literal language
of the claims, or if they include equivalent structural elements with insubstantial
differences from the literal language of the claims. It is to be understood that the
25 aspects of the embodiments are not necessarily limited to the features described
herein. Many modifications and variations of the present subject matter are possible
in the light of above disclosure.
30
15
REFERENCE NUMERALS
200 Gear shift assembly
201 Gear shift shaft
202 First spring
203 Second spring
204A, 204B A plurality of fastening members
301 First plate member
302 Second plate member
302H Hook portion
303 Gear selector
304 Gear shift drum
304G Grooves
305 A plurality of shift forks
306 A plurality of gears
400 Guide member
401 Bore
402 Outer surface
402F First edge of the outer surface
402E Second edge of the outer surface
402F-P First protrusion
402S-P Second protrusion
403 Indentation
404A First limb
404B Second lim , Claims:We Claim:
1. A guide member (400) for a gear shift assembly (200) of a vehicle, the guide
member (400) comprising:
a bore (401), the bore (401) being configured to receive and accommodate a
5 gear shift shaft (201) of the gear shift assembly (200);
an outer surface (402), the outer surface (402) being configured to receive a
first spring (202);
an indentation (403), the indentation (403) being provided on a second edge
(402S) of the outer surface (402);
10 one or more limbs (404A, 404B), the one or more limbs (404A, 404B) being
provided on one or more side of the indentation (403), the one or more limbs (404A,
404B) being configured to engage with one or more components of the gear shift
assembly (200) to restrict a rotational movement of the guide member (400) around
a rotational axis (X-X) of the gear shift shaft (201).
15 2. The guide member (400) for the gear shift assembly (200) of the vehicle as claimed
in claim 1, wherein the gear shift assembly (200) comprising:
a first plate member (301), the first plate member (301) being connected to
the gear shift shaft (201) in order to rotate between a first position and a second
position with the gear shift shaft (201) around the rotational axis (X-X), the
20 rotational axis (X-X) being perpendicular to the first plate member (301); and
a second plate member (302), the second plate member (302) being attached
to the first plate member (301), the second plate member (302) being configured to
reciprocatively move, with respect to the first plate member (301), along an axis
(YY), in order to engage with a gear selector (303), the axis (YY) being
25 perpendicular to the rotational axis (X-X), the second plate member (302) being
configured to rotate the gear selector (303) upon being rotated with the first plate
member (301) around the rotational axis (X-X).
3. The guide member (400) for the gear shift assembly (200) of the vehicle as claimed
in claim 2, wherein the first spring (202) being configured to reinstate the first plate
30 member (301) and the second plate member (302) to the first position after the
rotation of the gear selector (303); and the gear shift assembly (200) comprises a
17
second spring (203), the second spring (203) being disposed below the second plate
member (302), the second spring (203) being configured to control the reciprocating
movement of the second plate member (302) along the axis (YY).
4. The guide member (400) for the gear shift assembly (200) of the vehicle as claimed
5 in claim 2, wherein the second plate member (302) being attached to the first plate
member (301), in a parallel orientation with respect to the first plate member (301),
through a plurality of fastening members (204A, 204B).
5. The guide member (400) for the gear shift assembly (200) of the vehicle as claimed
in claim 4, wherein the one or more limbs (404A, 404B) comprising a first limb
10 (404A) and a second limb (404B), the first limb (404A) being parallel to the second
limb (404B) in order to accommodate one of the plurality of fastening members
(204A,204B) amidst the first limb (404A) and the second limb (404B) thereby
restricting the rotational movement of the guide member (400) around the rotational
axis (X-X).
15 6. The guide member (400) for the gear shift assembly (200) of the vehicle as claimed
in claim 1, wherein the guide member (400) comprising a first protrusion (402F-P)
and a second protrusion (402S-P), the first protrusion (402F-P) being provided on a
first edge (402F) of the outer surface (402), the second protrusion (402S-P) being
provided on the second edge (402S) of the outer surface (402), the first protrusion
20 (402F-P) and the second protrusion (402S-P) being configured to restrict a linear
movement of the first spring (202) along the rotational axis (X-X) of the gear shift
shaft (201).
7. A gear shift assembly (200) of a vehicle, the gear shift assembly (200) comprising:
a gear shift shaft (201), the gear shift shaft (201) being configured to rotate
25 around a rotational axis (X-X);
a first plate member (301), the first plate member (301) being connected to
the gear shift shaft (201) in order to rotate between a first position and a second
position with the gear shift shaft (201) around the rotational axis (X-X), the
rotational axis (X-X) being perpendicular to the first plate member (301);
30 a second plate member (302), the second plate member (302) being attached
to the first plate member (301), the second plate member (302) being configured to
18
reciprocatively move, with respect to the first plate member (301) and the gear shift
shaft (201), along an axis (YY), in order to engage with a gear selector (303), the
axis (YY) being perpendicular to the rotational axis (X-X), the second plate member
(302) being configured to rotate the gear selector (303) upon being rotated with the
5 first plate member (301) around the rotational axis (X-X);
a first spring (202), the first spring (202) being configured to reinstate the
first plate member (301) and the second plate member (302) to the first position after
the rotation of the gear selector (303); and
a guide member (400) the guide member (400) comprising:
10 a bore (401), the bore (401) being configured to receive and
accommodate the gear shift shaft (201);
an outer surface (402), the outer surface (402) being configured to
receive the first spring (202);
an indentation (403), the indentation (403) being provided on a
15 second edge (402S) of the outer surface (402);
a one or more limbs (404A, 404B), the one or more limbs (404A,
404B) being provided on one or more side of the indentation (403), the one
or more limbs (404A, 404B) being configured to engage with one or more
components of the gear shift assembly (200) to restrict a rotational
20 movement of the guide member (400) around the rotational axis (X-X).
8. The gear shift assembly (200) of the vehicle as claimed in claim 7, wherein the
second plate member (302) being attached to the first plate member (301), in a
parallel orientation with respect to the first plate member (301), through a plurality
of fastening members (204A,204B).
25 9. The gear shift assembly (200) of the vehicle as claimed in claim 8, wherein the one
or more limbs (404A, 404B) comprising a first limb (404A) and a second limb
(404B), the first limb (404A) being parallel to the second limb (404B) in order to
accommodate one of the plurality of fastening members (204A,204B) amidst the
first limb (404A) and the second limb (404B) thereby restricting the rotational
30 movement of the guide member (400) around the rotational axis (X-X).
19
10. The gear shift assembly (200) of the vehicle as claimed in claim 7, wherein the guide
member (400) comprising a first protrusion (402F-P) and a second protrusion (402SP), the first protrusion (402F-P) being provided on a first edge (402F) of the outer
surface (402), the second protrusion (402S-P) being provided on the second edge
5 (402S) of the outer surface (402), the first protrusion (402F-P) and the second
protrusion (402S-P) being configured to restrict a linear movement of the first spring
(202) along the rotational axis (X-X) of the gear shift shaft (201).
11. The gear shift assembly (200) of the vehicle as claimed in claim 7, wherein the gear
selector (303) being provided with a plurality of pins (303P) in order to selectively
10 engage with a hook portion (302H) of the second plate member (302).
12. The gear shift assembly (200) of the vehicle as claimed in claim 7, wherein the gear
selector (303) being coupled with a gear shift drum (304), the gear shift drum (304)
being provided with a plurality of grooves in order to engage with a plurality of shift
forks (305), the plurality of shift forks (305) being configured to shift a plurality of
15 gears (306) upon a rotation of the gear shift drum (304).
13. The gear shift assembly (200) of the vehicle as claimed in claim 7, wherein a second
spring (203) being disposed below the second plate member (302), the second spring
(203) being configured to control the reciprocating movement of the second plate
member (302) along the axis (YY).
20
Dated this 22nd day of December, 2023
25
(Digitally Signed)
Sudarshan Singh Shekhawat
IN/PA-1611
30 Agent for the Applicant