The present disclosure relates to switches and in particular, relates to a switch assembly for
an automatic gear transmission system of a vehicle.
BACKGROUND
10 Generally, vehicles, such as two-wheeler, three-wheeler, and four-wheeler vehicles, are
employed with one of a manual transmission system and an automatic transmission system.
Various switching units are employed in the vehicle to control the operation of the automatic
transmission system in different driving modes of the vehicle. Such switching units are usually
positioned in a passenger cabin of the vehicle and within a reach of a driver to access the
15 switching unit with ease while driving the vehicle. Currently, the switching units deployed in the
vehicle are extremely susceptible to exposure of the fluid, such as water, which usually leads to
an overall failure of the switching unit. In particular, the switching units fail to provide any
provision to effectively avoid ingress of the water in the switching units and, also to protect
various sub-components of the switching units from the exposure of the water. Further, the
20 switching units include contact-type switches for operating the automatic transmission system.
Implementation of such contact-type switches leads to wear/tear of the switches which result in
an overall reduction in the service life of the switching unit. Further, the switching units include
numerous sub-components which results in a substantial increase in the overall manufacturing
cost of such switching units.
25
Therefore, there is a need for a solution to overcome the abovementioned deficiencies.
SUMMARY
30 This summary is provided to introduce a selection of concepts, in a simplified format, that
are further described in the detailed description of the invention. This summary is neither
intended to identify key or essential inventive concepts of the invention and nor is it intended for
determining the scope of the invention.
3
In an embodiment of the present disclosure, a switch assembly for an automatic gear
transmission system is disclosed. The switch assembly includes a housing member and a
switching unit disposed in the housing member. The switching unit includes a first switching
knob adapted to be moved in a vertical direction in the housing member with respect to the
5 rotary knob. The switching unit includes a rotary knob positioned around the first switching
knob and adapted to be rotated with respect to the first switching knob along a central axis of the
housing member. The switching unit includes a second switching knob disposed adjacent to the
rotary knob and adapted to be moved in the vertical direction with respect to the housing
member. The switch assembly includes a Printed Circuit Board (PCB) assembly disposed below
10 the switching unit and adapted to be in communication with the first switching knob, the rotary
knob and the second switching knob. A plurality of passages is defined in the housing member
and between the first switching knob and the rotary knob to divert a flow of fluid away from the
PCB assembly.
15 To further clarify advantages and features of the present invention, a more particular
description of the invention will be rendered by reference to specific embodiments thereof,
which is illustrated in the appended drawings. It is appreciated that these drawings depict only
typical embodiments of the invention and are therefore not to be considered limiting of its scope.
The invention will be described and explained with additional specificity and detail with the
20 accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features, aspects, and advantages of the present invention will become
25 better understood when the following detailed description is read with reference to the
accompanying drawings in which like characters represent like parts throughout the drawings,
wherein:
Figure 1 illustrates a perspective view of a switch assembly for an automatic gear
30 transmission system, according to an embodiment of the present disclosure;
Figure 2 illustrates an exploded view of the switch assembly, according to an embodiment
of the present disclosure;
4
Figure 3 illustrates a sectional view of the switch assembly taken along X-X’ of the Figure
1, according to an embodiment of the present disclosure;
5 Figure 4a illustrates a perspective view of a housing member of the switch assembly,
according to an embodiment of the present disclosure;
Figure 4b illustrates a perspective view of a first holding member of the switch assembly,
according to an embodiment of the present disclosure;
10
Figure 5 illustrates a sectional view of the switch assembly taken along Y-Y’ of the Figure
1, according to an embodiment of the present disclosure;
Figure 6 illustrates another sectional view of the switch assembly taken along X-X’ of the
15 Figure 1, according to an embodiment of the present disclosure;
Figure 7 illustrate an enlarged sectional view of the switch assembly taken along X-X’ of
the Figure 1, according to an embodiment of the present disclosure; and
20 Figure 8 illustrates yet another sectional view of the switch assembly taken along X-X’ of
the Figure 1, according to an embodiment of the present disclosure.
Further, skilled artisans will appreciate that elements in the drawings are illustrated for
simplicity and may not have been necessarily been drawn to scale. For example, the flow charts
25 illustrate the method in terms of the most prominent steps involved to help to improve
understanding of aspects of the present invention. Furthermore, in terms of the construction of
the device, one or more components of the device may have been represented in the drawings by
conventional symbols, and the drawings may show only those specific details that are pertinent
to understanding the embodiments of the present invention so as not to obscure the drawings
30 with details that will be readily apparent to those of ordinary skill in the art having benefit of the
description herein.
5
DETAILED DESCRIPTION OF FIGURES
For the purpose of promoting an understanding of the principles of the invention, reference
will now be made to the embodiment illustrated in the drawings and specific language will be
5 used to describe the same. It will nevertheless be understood that no limitation of the scope of
the invention is thereby intended, such alterations and further modifications in the illustrated
system, and such further applications of the principles of the invention as illustrated therein
being contemplated as would normally occur to one skilled in the art to which the invention
relates. Unless otherwise defined, all technical and scientific terms used herein have the same
10 meaning as commonly understood by one of ordinary skilled in the art to which this invention
belongs. The system, methods, and examples provided herein are illustrative only and not
intended to be limiting.
Embodiments of the present invention will be described below in detail with reference to
15 the accompanying drawings.
For the purpose of promoting an understanding of the principles of the invention, reference
will now be made to the embodiment illustrated in the drawings and specific language will be
used to describe the same. It will nevertheless be understood that no limitation of the scope of
20 the invention is thereby intended, such alterations and further modifications in the illustrated
system, and such further applications of the principles of the invention as illustrated therein
being contemplated as would normally occur to one skilled in the art to which the invention
relates.
25 It will be understood by those skilled in the art that the foregoing general description and
the following detailed description are explanatory of the invention and are not intended to be
restrictive thereof.
Reference throughout this specification to “an aspect”, “another aspect” or similar
30 language means that a particular feature, structure, or characteristic described in connection with
the embodiment is included in at least one embodiment of the present invention. Thus,
appearances of the phrase “in an embodiment”, “in another embodiment” and similar language
throughout this specification may, but do not necessarily, all refer to the same embodiment.
6
The terms "comprises", "comprising", or any other variations thereof, are intended to cover
a nonexclusive inclusion, such that a process or method that comprises a list of steps does not
include only those steps but may include other steps not expressly listed or inherent to such
5 process or method. Similarly, one or more devices or subsystems or elements or structures or
components proceeded by "comprises... a" does not, without more constraints, preclude the
existence of other devices or other sub-systems or other elements or other structures or other
components or additional devices or additional sub-systems or additional elements or additional
structures or additional components.
10
Unless otherwise defined, all technical and scientific terms used herein have the same
meaning as commonly understood by one of ordinary skill in the art to which this invention
belongs. The system, methods, and examples provided herein are illustrative only and not
intended to be limiting.
15
It should be understood at the outset that although illustrative implementations of the
embodiments of the present disclosure are illustrated below, the present invention may be
implemented using any number of techniques, whether currently known or in existence. The
present disclosure should in no way be limited to the illustrative implementations, drawings, and
20 techniques illustrated below, including the exemplary design and implementation illustrated and
described herein, but may be modified within the scope of the appended claims along with their
full scope of equivalents.
The term “some” as used herein is defined as “none, or one, or more than one, or all.”
25 Accordingly, the terms “none,” “one,” “more than one,” “more than one, but not all” or “all”
would all fall under the definition of “some.” The term “some embodiments” may refer to no
embodiments or to one embodiment or to several embodiments or to all embodiments.
Accordingly, the term “some embodiments” is defined as meaning “no embodiment, or one
embodiment, or more than one embodiment, or all embodiments.”
30
The terminology and structure employed herein is for describing, teaching and
illuminating some embodiments and their specific features and elements and does not limit,
restrict or reduce the spirit and scope of the claims or their equivalents.
7
More specifically, any terms used herein such as but not limited to “includes,”
“comprises,” “has,” “consists,” and grammatical variants thereof do NOT specify an exact
limitation or restriction and certainly do NOT exclude the possible addition of one or more
5 features or elements, unless otherwise stated, and furthermore must NOT be taken to exclude the
possible removal of one or more of the listed features and elements, unless otherwise stated with
the limiting language “MUST comprise” or “NEEDS TO include.”
Whether or not a certain feature or element was limited to being used only once, either
10 way it may still be referred to as “one or more features” or “one or more elements” or “at least
one feature” or “at least one element.” Furthermore, the use of the terms “one or more” or “at
least one” feature or element do NOT preclude there being none of that feature or element,
unless otherwise specified by limiting language such as “there NEEDS to be one or more . . . ”
or “one or more element is REQUIRED.”
15
Unless otherwise defined, all terms, and especially any technical and/or scientific terms,
used herein may be taken to have the same meaning as commonly understood by one having an
ordinary skill in the art.
20 Reference is made herein to some “embodiments.” It should be understood that an
embodiment is an example of a possible implementation of any features and/or elements
presented in the attached claims. Some embodiments have been described for the purpose of
illuminating one or more of the potential ways in which the specific features and/or elements of
the attached claims fulfil the requirements of uniqueness, utility and non-obviousness.
25
Use of the phrases and/or terms such as but not limited to “a first embodiment,” “a further
embodiment,” “an alternate embodiment,” “one embodiment,” “an embodiment,” “multiple
embodiments,” “some embodiments,” “other embodiments,” “further embodiment”,
“furthermore embodiment”, “additional embodiment” or variants thereof do NOT necessarily
30 refer to the same embodiments. Unless otherwise specified, one or more particular features
and/or elements described in connection with one or more embodiments may be found in one
embodiment, or may be found in more than one embodiment, or may be found in all
embodiments, or may be found in no embodiments. Although one or more features and/or
8
elements may be described herein in the context of only a single embodiment, or alternatively in
the context of more than one embodiment, or further alternatively in the context of all
embodiments, the features and/or elements may instead be provided separately or in any
appropriate combination or not at all. Conversely, any features and/or elements described in the
5 context of separate embodiments may alternatively be realized as existing together in the context
of a single embodiment.
Embodiments of the present invention will be described below in detail with reference to
the accompanying drawings.
10
Figure 1 illustrates a perspective view of a switch assembly 100 for an automatic gear
transmission system, according to an embodiment of the present disclosure. In an embodiment,
the switch assembly 100 may be deployed in a vehicle to control an operation of the automatic
gear transmission system of the vehicle. The switch assembly 100 may be employed in vehicles
15 including, but not limited to, two-wheeler vehicles, three-wheeler vehicles, four-wheeler
vehicles, commercial vehicles, and off-road vehicles to operate the automatic transmission
system. The switch assembly 100 may be adapted to be actuated to operate the automatic gear
transmission system in a plurality of driving modes of the vehicle.
20 In an embodiment, the plurality of driving modes may include, but is not limited to, a
reverse mode, a drive mode, a neutral mode, a parking mode, and an economical mode (also
referred to as Eco mode), without departing from the scope of the present disclosure. The switch
assembly 100 may be operated to select one of driving modes, such as the reverse mode, the
drive mode, and the neutral mode. Further, the switch assembly 100 may be operated to toggle
25 between an ON-position and an OFF-position to enable and disable, respectively, the parking
mode. Furthermore, the switch assembly 100 may be operated to toggle between an ON-position
and an OFF-position to enable and disable, respectively, the economical mode. Constructional
and operational details of the switch assembly 100 are explained in the subsequent sections of
the present disclosure.
30
Figure 2 illustrates an exploded view of the switch assembly 100, according to an
embodiment of the present disclosure. Referring to Figure 2, the switch assembly 100 may
include, but is not limited to, a surrounding panel 201, a housing member 202, and a back cover
9
204. The surrounding panel 202 and the back cover 204 may be adapted to be removably
coupled to the housing member 202 to encapsulate various sub-components of the switch
assembly 100. Further, the switch assembly 100 may include, but is not limited to, a switching
unit 206, a bezel member 208, a light guide 210, a first holding member 212, a second holding
5 member 214, and a Printed Circuit Board (PCB) 216.
Referring to Figure 2, the switching unit 206 may be adapted to be disposed in the housing
member 202. The switching unit 206 may include, but is not limited to, a first switching knob
218, a rotary knob 220, and a second switching knob 222. The first switching knob 218 may be
10 provided to operate the automatic transmission system in the parking mode. In an embodiment,
the first switching knob 218 may be adapted to be snap-locked with the second holding member
214. The first switching knob 218 may be adapted to be moved in a vertical direction in the
housing member 202 with respect to the rotary knob 220. The first switching knob 218 may be
adapted to be operated to toggle between the ON-position and the OFF-position of the parking
15 mode.
Figure 3 illustrates a sectional view of the switch assembly 100 taken along X-X’ of the
Figure 1, according to an embodiment of the present disclosure. Figure 4a illustrates a
perspective view of the housing member 202 of the switch assembly 100, according to an
20 embodiment of the present disclosure. Figure 4b illustrates a perspective view of the first
holding member 212 of the switch assembly 100, according to an embodiment of the present
disclosure.
Referring to Figure 2, Figure 3, and Figure 4a, in an embodiment, the rotary knob 220 may
25 be positioned around the first switching knob 218. The rotary knob 220 may be adapted to be
rotated with respect to the first switching knob 218 along a central axis C-C’ of the housing
member 202. In an embodiment, the rotary knob 220 may be adapted to be rotated in at least one
of a clockwise direction and an anti-clockwise direction, without departing from the scope of the
present disclosure. The rotary knob 220 may be adapted to be rotated to select one of the driving
30 modes, such as the reverse mode, the drive mode, and the neutral mode. Further, the switch
assembly 100 may include the first holding member 212 adapted to hold the rotary knob 220 in
the housing member 202. The first holding member 212 may be adapted to rotate along with the
10
rotary knob 220. Constructional details of the first holding member 212 are explained in the
subsequent sections of the present disclosure.
Referring to Figure 2, Figure 3, and Figure 4a, the second switching knob 222 may be
5 disposed adjacent to the rotary knob 220. The second switching knob 222 may be adapted to be
moved in the vertical direction with respect to the housing member 202. The second switching
knob 222 may be adapted to be operated to toggle between the ON-position and the OFFposition of the economical mode. Further, the switch assembly 100 may include the second
holding member 214 disposed concentrically with respect to the first holding member 212. The
10 second holding member 214 may be adapted to hold the first switching knob 220.
Referring to Figure 2 and Figure 4a, in the illustrated embodiment, the housing member
202 may include a first receiving portion 402 and a second receiving portion 404 adjacent to the
first receiving portion 402. The first receiving portion 402 may be adapted to removably receive
15 the first holding member 212 and the second holding member 214 to hold the rotary knob 220
and the first holding member 218, respectively. The second receiving portion 404 may be
provided adjacent to the first receiving portion 402 on the housing member 202. The second
receiving portion 404 may be adapted to removably receive the second switching knob 222.
20 Figure 5 illustrates a sectional view of the switch assembly 100 taken along Y-Y’ of the
Figure 1, according to an embodiment of the present disclosure. Referring to Figure 3, Figure 4a,
Figure 4b, and Figure 5, a plurality of passages 302 may be defined in the housing member 202
and between the first switching knob 218 and the rotary knob 220 to divert a flow of fluid away
from the PCB assembly 216. Referring to Figure 4a, in the illustrated embodiment, the plurality
25 of passages 302 may include a channel 406 defined on the housing member 202 around the
second receiving portion 404. The channel 406 may be adapted to expel the flow of fluid from
the housing member 202 and divert the flow of fluid away from the PCB assembly 216.
Further, referring to Figure 3, the plurality of passages 302 may include, but is not limited
30 to a first passage 302-1 and a second passage 302-2. The first passage 302-1 may be defined
circumferentially between the first switching knob 218 and the rotary knob 220. The second
passage 302-2 may be defined between a bottom portion of the rotary knob 220 and the bezel
member 208 coupled to the housing member 202. The first passage 302-1 may be in fluid
11
communication with the second passage 302-1. The flow of fluid may flow from the first
passage 302-1 to the second passage 302-2 and expels from the housing member 202 through the
second passage 302-2.
5 Referring to Figure 4a and Figure 4b, in the illustrated embodiment, the first holding
member 212 may include a plurality of passages 408 circumferentially distributed around a
projecting member 410 of the first holding member 212. Each of the plurality of passages 408
may be adapted to divert the flow of fluid entering in the housing member 202 away from the
PCB assembly 216. In an embodiment, each of the plurality of passages 408 may expel the flow
10 of fluid which enters in the housing member 202 from the first passage 302-1 defined between
the rotary knob 220 and the first switching knob 218.
Further, each of the plurality of passages 408 may be embodied as a cut-out section
provided in the first holding member 212. The plurality of passages 408 may be
15 circumferentially distributed on the first holding member 212 at equal intervals. The plurality of
passages 408 may be provided on the first holding member 212 in a manner that overall
mechanical strength of the first holding member 212 is substantially increased.
Figure 6 illustrates another sectional view of the switch assembly 100 taken along X-X’ of
20 the Figure 1, according to an embodiment of the present disclosure. Figure 7 illustrates an
enlarged sectional view of the switch assembly 100 taken along X-X’ of the Figure 1, according
to an embodiment of the present disclosure. Referring to Figure 2, Figure 6, and Figure 7, the
housing member 202 may include, but is not limited to, a plurality of snap locks 602 adapted to
be engaged with the first holding member 212. The plurality of snap locks 602 may be adapted
25 to restrict the movement of the rotary knob 220 in a vertical direction with respect to the housing
member 202.
Further, the housing member 202 may include, but is not limited to, a plurality of pushers
702 circumferentially positioned in the housing member 202. The plurality of pushers 702 may
30 be adapted to be engaged with the first holding member 212. The plurality of pushers 702 may
be adapted to resiliently push the first holding member 212 in the vertical direction. In an
embodiment, the plurality of pushers 702 may be adapted to provide tactile sensation
corresponding to each of a plurality of rotational positions of the rotary knob 220. Each of the
12
plurality of pushers 702 may be positioned in the housing member 202 along with a resilient
member, such as a spring, without departing from the scope of the present disclosure. The
second holding member 214 may be adapted to engage with a plurality of guiding ribs of the
housing member 202. The second holding member 214 may be adapted to move in a vertical
5 direction along the plurality of guiding ribs.
Figure 8 illustrates yet another sectional view of the switch assembly 100 taken along XX’ of the Figure 1, according to an embodiment of the present disclosure. Referring to Figure 2
and Figure 8, in the illustrated embodiment, the PCB assembly 216 may be disposed below the
10 switching unit 206. The PCB assembly 216 may be adapted to be in communication with the
first switching knob 218, the rotary knob 220 and the second switching knob 222. The PCB
assembly 216 may include, but is not limited to, a plurality of optical sensors 802 positioned
corresponding to the first holding member 212 coupled to the rotary knob 220.
15 The plurality of optical sensors 802 may be adapted to detect a rotational position of the
rotary knob 220 corresponding to one of driving modes of the automatic gear transmission
system. Further, the PCB assembly 216 may include an optical encoder 804 positioned
corresponding to the first holding member 212. The optical encoder 804 may be adapted to
detect rotational positions of the rotary knob 220 corresponding to the driving modes. The
20 optical encoder 804 may be provided as a fail-safe for the plurality of optical sensors 802. In
particular, if the plurality of optical sensors 802 fails to detect the rotational positions of the
rotary knob, then the optical encoder 804 may be adapted to provide the rotational positions of
the rotary knob 220 for the operation of the automatic gear transmission system.
25 Referring to Figure 8, in the illustrated embodiment, a first tactical switch 806 and a
second tactile switch 808 may be provided on the PCB assembly 216 of the switch assembly
100. The first tactile switch 806 may be positioned corresponding to the second holding member
214. The first tactical switch 806 may be adapted to be operated by pushing the first switching
knob 218 in the vertical direction with respect to the housing member 202. Further, the second
30 tactical switch 808 may be positioned corresponding to the second switching knob 222. The
second tactile switch 808 may be adapted to be operated by pushing the second switching knob
222 in the vertical direction with respect to the housing member 202.
13
As would be gathered, the present disclosure offers the switch assembly 100 for the
automatic gear transmission system of the vehicle. As explained earlier, the switch assembly 100
may be provided with the plurality of passages 302 to restrict and divert the flow of fluid
entering in the housing member away from the PCB assembly 216. For instance, the first
5 holding member 212 may include the plurality of passages 408 circumferentially distributed
around the projecting member 410 of the first holding member 212. Each of the plurality of
passages 408 may be adapted to expel the flow of fluid entered in the switch assembly from the
first passage 302-1. This ensures that the electronic components, such as the PCB assembly 216,
of the switch assembly 100 remain away from the flow of fluid entered in the switch assembly
10 100. This substantially increases the overall service life of the switch assembly 100 along with
various sub-components of the switch assembly 100.
Further, the switch assembly 100 may include the plurality of optical sensors 802
positioned on the PCB assembly 216 corresponding to the first holding member 212. Owing to
15 the implementation of the plurality of optical sensors 802, the switch assembly 100 may be
embodied as a contact-less switch assembly. This substantially eliminates overall physical
contact between various sub-components of the switch assembly during operation of the
aforesaid switch assembly 100. Further, this substantially reduces the overall number of
components deployed in the switch assembly 100 which further leads to the overall reduction in
20 the manufacturing cost of the switch assembly 100. Therefore, the switch assembly 100 of the
present disclosure is flexible in implementation, compact, efficient, cost-effective, and
convenient.
The drawings and the forgoing description give examples of embodiments. Those skilled
25 in the art will appreciate that one or more of the described elements may well be combined into a
single functional element. Alternatively, certain elements may be split into multiple functional
elements. Elements from one embodiment may be added to another embodiment. For example,
orders of processes described herein may be changed and are not limited to the manner described
herein.
30
Moreover, the actions of any flow diagram need not be implemented in the order shown;
nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on
other acts may be performed in parallel with the other acts. The scope of embodiments is by no
14
means limited by these specific examples. Numerous variations, whether explicitly given in the
specification or not, such as differences in structure, dimension, and use of material, are
possible. The scope of embodiments is at least as broad as given by the following claims.
5 Benefits, other advantages, and solutions to problems have been described above with
regard to specific embodiments. However, the benefits, advantages, solutions to problems, and
any component(s) that may cause any benefit, advantage, or solution to occur or become more
pronounced are not to be construed as a critical, required, or essential feature or component of
any or all the claims.
10
While specific language has been used to describe the present subject matter, any
limitations arising on account thereto, are not intended. As would be apparent to a person in the
art, various working modifications may be made to the method in order to implement the
inventive concept as taught herein. The drawings and the foregoing description give examples of
15 embodiments. Those skilled in the art will appreciate that one or more of the described elements
may well be combined into a single functional element. Alternatively, certain elements may be
split into multiple functional elements. Elements from one embodiment may be added to another
embodiment.

We Claim:
1. A switch assembly (100) for an automatic gear transmission system, the switch assembly
(100) comprising:
a housing member (202);
5 a switching unit (206) disposed in the housing member (202), wherein the switching
unit (206) comprising:
a first switching knob (218) adapted to be moved in a vertical direction in the
housing member (202);
a rotary knob (220) positioned around the first switching knob (218) and
10 adapted to be rotated with respect to the first switching knob (218) along a central
axis (C-C’) of the housing member (202); and
a second switching knob (222) disposed adjacent to the rotary knob (220) and
adapted to be moved in the vertical direction with respect to the housing member
(202); and
15 a Printed Circuit Board (PCB) (216) assembly disposed below the switching unit
(206) and adapted to be in communication with the first switching knob (218), the rotary
knob (220) and the second switching knob (222),
wherein a plurality of passages (302) is defined in the housing member (202)
and between the first switching knob (218) and the rotary knob (220) to divert a flow
20 of fluid away from the PCB assembly (216).
2. The switch assembly (100) as claimed in claim 1 further comprising:
a first holding member (212) adapted to hold the rotary knob (220) in the housing
member (202), wherein the first holding member (212) is adapted to rotate along with the
25 rotary knob (220); and
a second holding member (214) disposed concentrically with respect to the first
holding member (212) and adapted to hold the first switching knob (218).
3. The switch assembly (100) as claimed in claim 2, wherein the first holding member (212)
30 includes a plurality of passages (408) circumferentially distributed around a projecting
member (410) of the first holding member (212), wherein each of the plurality of passages
(408) is adapted to divert the flow of fluid entering in the housing member (202) away
from the PCB assembly (216).
16
4. The switch assembly (100) as claimed in claim 2, wherein the housing member (202)
includes a first receiving portion (402) and a second receiving portion (404) adjacent to the
first receiving portion (402), the first receiving portion (402) is adapted to removably
5 receive the first holding member (212) and the second holding member (214) to hold the
rotary knob (220) and the first holding member (212), respectively.
5. The switch assembly (100) as claimed in one of claims 1 and 4, wherein the plurality of
passages (302) comprises a channel (406) defined on the housing member (202) around
10 the second receiving portion (404), the channel (406) is adapted to expel the flow of fluid
from the housing member (202) and divert the flow of fluid away from the PCB assembly
(216).
6. The switch assembly (100) as claimed in claim 1, wherein the plurality of passages (302)
15 comprises:
a first passage (302-1) defined circumferentially between the first switching knob
(218) and the rotary knob (220); and
a second passage (302-2) defined between a bottom portion of the rotary knob (220)
and a bezel member (208) coupled to the housing member (202),
20 wherein the first passage (302-1) is in fluid communication with the second passage
(302-2), the flow of fluid flows from the first passage (302-1) to the second passage (302-
2) and expels from the housing member (202) through the second passage (302-2).
7. The switch assembly (100) as claimed in one of claims 1 and 2, wherein the housing
25 member (202) comprises:
a plurality of snap locks (602) adapted to be engaged with the first holding member
(212), the plurality of snap locks (602) is adapted to restrict movement of the rotary knob
(220) in a vertical direction with respect to the housing member (202); and
a plurality of pushers (702) circumferentially positioned in the housing member
30 (202) and adapted to be engaged with the first holding member (212), wherein the plurality
of pushers (702) is adapted to resiliently push the first holding member (212) in the
vertical direction and provide tactile sensation corresponding to each of a plurality of
rotational positions of the rotary knob (220).
17
8. The switch assembly (100) as claimed in one of claims 1 and 2, wherein the second
holding member (214) is adapted to engage with a plurality of guiding ribs of the housing
member (202), the second holding member (214) is adapted to move in a vertical direction
5 along the plurality of guiding ribs.
9. The switch assembly (100) as claimed in one of claims 1 and 2, wherein the PCB assembly
(216) comprises a plurality of optical sensors (802) positioned corresponding to the first
holding member (212) coupled to the rotary knob (220), the plurality of optical sensors
10 (802) is adapted to detect a rotational position of the rotary knob (220) corresponding to
one of driving modes of the automatic gear transmission system.
10. The switch assembly (100) as claimed in one of claims 1 and 2, wherein the PCB assembly
(216) comprises:
15 an optical encoder (804) positioned corresponding to the first holding member (212);
a first tactical switch (806) positioned corresponding to the second holding member
(214), wherein the first tactical switch (806) is adapted to be operated by pushing the first
switching knob (218) in the vertical direction with respect to the housing member (202);
and
20 a second tactical switch (808) positioned corresponding to the second switching
knob (218) and adapted to be operated by pushing the second switching knob (218) in the
vertical direction with respect to the housing member (202sd).