Description:TECHNICAL FIELD
[0001] The present subject matter relates, in general, to electric vehicles
(EVs) and, particularly, to placement of anti-lock braking systems in the
EVs.
5 BACKGROUND
[0002] In the field of two-wheelers, including electric two-wheelers,
safety systems have become increasingly integral to vehicle design. Among
these, an anti-lock braking system (ABS) plays a critical role in enhancing
rider safety by preventing wheel lock-up during braking, thereby maintaining
10 traction and steering control of the vehicle. An ABS typically operates by
modulating brake pressure through a control unit that receives input from
wheel speed sensors of the vehicle.
[0003] There are primarily two types of ABS configurations used in twowheelers:
a single-channel ABS and a dual-channel ABS. A single-channel
15 ABS generally controls the front wheel braking circuit, while a dual-channel
ABS manages both front and rear wheel braking circuits of the vehicle
independently. The selection of these configurations depends on the
performance requirements, cost considerations, and intended usage of the
vehicle.
20 [0004] Conventionally, an ABS unit is placed either on top of a frame of
the vehicle or along the lateral sides of the vehicle. These locations are often
selected based on ease of access and available space.
[0005] In the electric two-wheelers, the battery and motor are typically
positioned as low as possible within the frame to optimize weight distribution
25 and stability of the vehicle. This packaging strategy, while beneficial for
dynamic performance, limits the available space for other components such
as the ABS unit.
SUMMARY OF THE INVENTION
[0006] This summary is provided to introduce a selection of concepts in
30 a simplified form that are further described below in the detailed description.
This summary is not intended to identify key features or essential features
2
of the claimed subject matter, nor is it intended to be used as an aid in
determining the scope of the claimed subject matter.
[0007] In an embodiment of the present invention, the invention is
related to an EV. The EV comprises a frame comprising a pair of
longitudinally extending upper tubular members and 5 a pair of longitudinally
extending lower tubular members arranged to define an enclosure
therebetween to accommodate a battery pack of the EV. The tubular
members of either pair comprise left-hand side (LH) members and righthand
side (RH) members disposed in a spaced-apart and substantially
10 parallel manner. The frame further comprises a footrest cross member
extending laterally across a LH member and a RH member, to mount a front
footrest assembly of the EV. Further, the frame comprises a swingarm cross
member to serve as a pivot for a swingarm of the EV. The swingarm cross
member is positioned below the footrest cross member and extends laterally
15 across the LH member and the RH member. A motor of the EV is mounted
on the frame in front of the swingarm cross member. An anti-lock braking
system (ABS) unit is mounted on the frame between the footrest cross
member and the swingarm cross member, behind the motor, below the
enclosure for the battery pack, and in front of a rear wheel of the EV.
20 [0008] In accordance with example embodiments of the present
invention, the frame comprises a first fixed bracket welded on the footrest
cross member and a second fixed bracket welded on the swingarm cross
member, to support the ABS unit.
[0009] In accordance with example embodiments of the present
25 invention, the frame comprises an ABS mounting bracket mounted on the
first fixed bracket and the second fixed bracket, to hold the ABS unit.
[0010] In accordance with example embodiments of the present
invention, the ABS mounting bracket comprises a plurality of dampeners
positioned at each point of contact between a housing of the ABS unit and
30 a surface of the ABS mounting bracket, to absorb vibrations transmitted
from the frame of the EV.
3
[0011] The foregoing general description of the illustrative embodiments
and the following detailed description thereof are merely exemplary aspects
of the teachings of this disclosure and are not restrictive.
BRIEF 5 DESCRIPTION OF DRAWINGS
[0012] The detailed description is described with reference to the
accompanying figures. In the figures, the left-most digit(s) of a reference
number identifies the figure in which the reference number first appears.
The same numbers are used throughout the drawings to reference like
10 features and components.
[0013] Figures 1A-1C each illustrate a right-hand side view of an electric
vehicle (EV) comprising an ABS unit, in accordance with an implementation
of the present subject matter.
[0014] Figure 1D illustrates a left-hand side view of the EV along with
15 an ABS unit, in accordance with an implementation of the present subject
matter.
[0015] Figures 2A and 2B illustrate a perspective view and a side view
of the frame of the EV, respectively, in accordance with an implementation
of the present subject matter.
20 [0016] Figure 3A illustrates a side view of the frame with a first fixed
bracket and a second fixed bracket, in accordance with an implementation
of the present subject matter.
[0017] Figures 3B and 3C illustrate a side view and a front view of an
ABS mounting bracket mounted on the first fixed bracket and the second
25 fixed bracket, respectively, in accordance with an implementation of the
present subject matter.
[0018] Figure 4A illustrates a perspective view of the ABS unit mounted
on the ABS mounting bracket, in accordance with an implementation of the
present subject matter.
30 [0019] Figure 4B illustrates an exploded view of the ABS mounting
bracket and the ABS unit, in accordance with an implementation of the
4
present subject matter.
[0020] Figure 4C illustrates a side view of the ABS unit mounted on the
frame, in accordance with an implementation of the present subject matter.
5 DESCRIPTION OF EMBODIMENTS
[0021] The present subject matter relates to the placement of anti-lock
braking system in the electric vehicles (EVs).
[0022] Integration of safety-critical components such as an anti-lock
braking system (ABS) has become increasingly important in electric two10
wheelers. The ABS in a two-wheeler is configured to prevent wheel lock-up
in an event of braking of the vehicle, thereby enhancing vehicle control and
rider safety. The ABS system typically comprises an ABS unit, a set of brake
fluid lines, and wheel speed sensors, all working in coordination to modulate
brake pressure dynamically.
15 [0023] A two-wheeler may be equipped with either a single-channel
ABS or a dual-channel ABS. A single-channel ABS generally governs a front
wheel braking circuit, while a dual-channel ABS manages both front and
rear wheel circuits independently. The selection of the ABS system depends
on the performance requirements, cost considerations, and intended usage
20 of the vehicle.
[0024] In conventional electric two-wheelers, the ABS unit is commonly
placed on top of a frame of the vehicle or along the lateral sides of the
vehicle. These locations are often chosen based on ease of access and
available packaging space. However, such placements tend to increase the
25 center of gravity and increase the lateral offset from the vehicle’s center
plane, which may adversely affect vehicle stability and handling.
[0025] Electric two-wheelers typically feature a compact chassis
architecture, where a battery and a motor occupy the lower central region
of the frame. These components are deliberately positioned low to achieve
30 a favorable center of gravity and to enhance dynamic stability. As a result,
5
the available space for mounting auxiliary systems such as the ABS unit
becomes limited.
[0026] Furthermore, the traditional placement of the ABS unit may
interfere with the assembly or maintenance of adjacent components, such
as the motor or the battery. This can lead to 5 increased service time and
complexity during routine maintenance or part replacement.
[0027] The present subject matter is related to an EV. The EV comprises
a frame comprising a pair of longitudinally extending upper tubular members
and a pair of longitudinally extending lower tubular members arranged to
10 define an enclosure therebetween to accommodate a battery pack of the
EV. The tubular members of either pair comprise left-hand side (LH)
members and right-hand side (RH) members disposed in a spaced-apart
and substantially parallel manner. The frame further comprises a footrest
cross member extending laterally across a LH member and a RH member,
15 to mount a front footrest assembly of the EV. Further, the frame comprises
a swingarm cross member to serve as a pivot for a swingarm of the EV. The
swingarm cross member is positioned below the footrest cross member and
extends laterally across the LH member and the RH member. A motor of
the EV is mounted on the frame in front of the swingarm cross member. An
20 anti-lock braking system (ABS) unit is mounted on the frame between the
footrest cross member and the swingarm cross member, behind the motor,
below the enclosure for the battery pack, and in front of a rear wheel of the
EV.
[0028] The claimed subject matter addresses the above-described
25 technical problems by providing a specific placement of the ABS unit within
a defined region of the frame of the EV. By positioning the ABS unit between
a footrest cross member and a swingarm cross member, where both are
affixed to the frame and extends laterally across the frame, the invention
ensures that the ABS unit is located in a lower central region of the EV. This
30 placement contributes to maintaining a low center of gravity, which
6
enhances vehicle stability and performance, especially under dynamic
riding conditions.
[0029] Further, the ABS unit is mounted behind a motor and below the
battery pack, both of which are also affixed to the frame. This configuration
ensures that the ABS unit does not 5 interfere with the assembly or
serviceability of either the motor system or the battery pack. By utilizing the
space between the footrest cross member and the swingarm cross member,
the invention avoids the conventional practice of placing the ABS unit on top
of or along the sides of the frame of the EV that increases the center of
10 gravity. The defined placement of the ABS unit within the frame allows for a
more compact and service-friendly vehicle layout.
[0030] The present subject matter is further described with reference to
the accompanying figures. It should be noted that the description and
figures merely illustrate the principles of the present subject matter. It is thus
15 understood that various arrangements may be devised that, although not
explicitly described or shown herein, encompass the principles of the
present subject matter. Moreover, all statements herein reciting principles,
aspects, and examples of the present subject matter, as well as specific
examples thereof, are intended to encompass equivalents thereof.
20 [0031] Although embodiments for methods and systems for the present
subject matter have been described in a language specific to structural
features and/or methods, it is to be understood that the present subject
matter is not necessarily limited to the specific features or methods
described. Rather, the specific features and methods are disclosed as
25 exemplary embodiments for the present subject matter.
[0032] In accordance with an embodiment of the present invention,
Figures 1A to 1C each illustrate a right-hand side view of an electric vehicle
(EV) 100, depicting the placement of an ABS unit 102. Similarly, Figure 1D
illustrates a left-hand side view of the EV 100. The ABS unit 102, as shown
30 in the figures, is positioned in front of the rear wheel of the EV 100. The ABS
unit 102 is mounted on a frame of the EV 100 in a region between a footrest
7
cross member (shown later) and a swingarm cross member (shown later),
behind a motor (not shown) and below a battery pack (not shown) of the
EV. As discussed previously, said placement of the ABS unit 102 close to
the swingarm pivot contributes to a lower center of gravity, which enhances
the overall stability and handling of the EV 100. 5 Additionally, this positioning
the ABS unit 102 does not interfere with the serviceability or assembly of
the motor and battery pack, thereby simplifying maintenance of the vehicle.
[0033] In an example, the ABS unit 102 is implemented in a two-wheeler
electric vehicle. In an implementation, the ABS unit 102 is a single-channel
10 ABS unit, and the two-wheeler is an electric motorcycle. However, example
embodiments where the ABS unit 102 recited in the claims is a dual-channel
ABS unit are also possible.
[0034] To enable the ABS unit 102 to operate at the new location
explained above as expected, the ABS unit 102 is communicatively coupled
15 to other functional units of the EV 100. The figures depict the connection of
the ABS unit to such components, namely, of a front braking system,
including a master cylinder 104 that is operatively connected to a front brake
lever 106, a set of brake fluid lines 108, and a front brake caliper 110. A
brake fluid line, that is an inlet hose 112, extends from the master cylinder
20 104 to an inlet port (not shown) of the ABS unit 102. The master
cylinder 104 functions as a hydraulic actuator that converts mechanical
force applied at the brake lever 106 into pressurized brake fluid, which is
then transmitted through brake fluid lines 108 to engage the front brake
caliper 110. Another brake fluid line, that is an outlet hose 114, extends from
25 an outlet port (not shown) of the ABS unit 102 to the front brake caliper 110.
The front brake caliper 110 houses hydraulic pistons and brake pads, which
are actuated by the pressurized brake fluid to apply braking force to a front
wheel disc 116.
[0035] The ABS unit 102 is in electrical communication with a wheel
30 speed sensor and an electronic control unit (ECU) via a wiring harness. The
wiring harness transmits sensor data and control signals necessary for
8
modulating brake pressure during braking events. Based on the input
received from the wheel speed sensor, the ABS unit 102 regulates hydraulic
pressure to prevent wheel lock-up, which enhances the stability and control
of the vehicle.
[0036] In example embodiments, 5 clips 118 are provided at
predetermined locations along the frame to secure the brake fluid lines 108
and the wiring harness. The clips 118 ensure that the fluid lines 108 and the
wiring harness remain properly routed and restrained, minimizing
movement and potential wear due to vibration or mechanical interference
10 during vehicle operation. A body panel 120 is positioned behind the front
wheel of the EV to protect the ABS unit 102 from mud, water, and other road
debris projected during vehicle operation. The body panel 120 ensures that
the ABS unit remains functionally reliable and free from environmental
contaminants that could affect its performance or longevity. The body panel
15 120 is made of plastic; however, it is not limited to plastics and may be
formed from a material selected from a group consisting of polymer
composites, fiber-reinforced plastics, or sheet molding compounds.
[0037] While the figures depict a single-channel ABS unit, it will be clear
to a person skilled in the art that the single-channel ABS unit as shown in
20 the figure is not a limitation. Rather, the ABS unit 102 of the present
invention is flexible with respect to the requirements and the type of vehicle.
The present invention may alternatively be implemented as a multi-channel
ABS unit.
[0038] In accordance with an embodiment of the present invention,
25 Figures 2A and 2B illustrate a perspective view and a side view of the frame
202 of the EV 100, respectively, along with the placement of the ABS unit
102. As discussed previously, the ABS unit 102 is mounted on the frame
202 in a region between the footrest cross member 204 and the swingarm
cross member 206, behind the motor, and in front of the rear wheel of the
30 EV 100. The ABS unit 102 is located below an enclosure for the battery
pack formed in the frame of the EV 100.
9
[0039] The figure further shows an inlet banjo bolt 208 and an outlet
banjo bolt 210 of the ABS unit 102, each configured to securely fasten a
corresponding brake fluid hose to the ABS unit 102 while allowing hydraulic
fluid to flow through the connection; the inlet banjo bolt 208 connects the
inlet hose 112 from the master cylinder 104 to the ABS 5 unit 102, and the
outlet banjo bolt 210 connects the outlet hose 114 from the ABS unit 102 to
the front brake caliper 110. The inlet hose 112 and outlet hose 114 are
responsible for transmitting pressurized brake fluid during braking events.
[0040] The master cylinder 104 is operatively connected to the front
10 brake lever 106, which is mounted on a handlebar of the EV 100. When the
front brake lever 106 is actuated by a rider by applying pressure on the front
brake lever 106, the master cylinder 104 converts the mechanical input into
hydraulic pressure. This pressurized brake fluid travels through the inlet
hose 112 to the ABS unit 102. The ABS unit 102, upon receiving input from
15 a wheel speed sensor via the wiring harness, modulates the pressure based
on real-time wheel behavior to prevent wheel lock-up. The regulated fluid is
then transmitted through the outlet hose to the front brake caliper.
[0041] The front brake caliper 110 is mounted near the front wheel disc
116 and houses hydraulic pistons and brake pads. Upon receiving
20 pressurized fluid from the ABS unit 102, the pistons actuate the brake pads
to apply controlled braking force to the front wheel disc 116, thereby slowing
down the front wheel of the vehicle.
[0042] Further, the wiring harness (not shown) that electrically connects
the ABS unit 102 to the wheel speed sensor and the ECU and transmits
25 sensor data and control signals necessary for the operation of the ABS unit
102. The clips 118 provided along the frame 202 secure the brake fluid
hoses and the wiring harness in place. The clips 118 ensure that the inlet
and outlet hoses and the wiring harness remain properly routed and
restrained, minimizing movement and wear due to vibration or mechanical
30 interference during vehicle operation.
10
[0043] In accordance with an embodiment of the present invention,
Figure 3A illustrates a side view of the frame 202 with a first fixed bracket
302 and a second fixed bracket 304 that mounts the ABS unit 102 at the
above-described new location. As shown, the frame comprises a first fixed
bracket 302 welded on the footrest cross member 5 204 and a second fixed
bracket 304 welded on the swingarm cross member 206. These fixed
brackets are configured to support an ABS mounting bracket (not shown),
which holds the ABS unit 102 in place.
[0044] Figures 3B and 3C illustrate a side view and a front view of the
10 ABS mounting bracket 306 mounted on the first fixed bracket 302 and the
second fixed bracket 304, respectively. The ABS mounting bracket 306
securely holds a housing of the ABS unit 102 while isolating it from direct
vibrations that are transmitted from the frame 202. To isolate the ABS unit
102 from vibration, the ABS mounting bracket 306 comprises a plurality of
15 dampeners 308, which are positioned at each point of contact between the
housing of the ABS unit 102 and the ABS mounting bracket 306. The
dampeners 308 are configured to absorb vibrations transmitted from the
frame of the EV 100, to protect the ABS unit 102 from mechanical stress
and ensure stable operation.
20 [0045] Additionally, in an example embodiment, at least one of the
plurality of dampeners 308 is positioned between a mounting point of the
ABS mounting bracket 306 and the second fixed bracket 304. The
dampeners 308 serve to further isolate the ABS unit 102 from vibrations of
the swingarm cross member 206, which is subject to dynamic loads during
25 operation of the vehicle.
[0046] Each of the first fixed bracket 302 and the second fixed bracket
304 comprises an opening 310 to receive a fastening means. In an example,
the fastening means is a nut and bolt assembly. Each of the openings
provided on the first fixed bracket 302 and the second fixed bracket 304
30 corresponds to the opening provided on the ABS mounting bracket 306.
These fastening means are used to secure the ABS mounting bracket 306
11
onto the fixed brackets, to ensure a stable mounting of the ABS mounting
bracket 306.
[0047] The arrangement of the first fixed bracket 302, the second fixed
bracket 304, and the ABS mounting bracket 306 together allows the ABS
unit 102 to be mounted in a modular and vibration-5 isolated manner, without
interfering with the serviceability of adjacent components such as the motor
or battery pack of the EV. Also, the arrangement of the brackets is such that
it supports both single-channel and multi-channel ABS configurations,
depending on the implementation. In scenarios where a dual-channel ABS
10 unit is employed, which typically has a larger size as compared to the singlechannel
ABS unit, the arrangement of the first fixed bracket 302, the second
fixed bracket 304, and the ABS mounting bracket 306 offers flexibility by
allowing to increase the size of the brackets to accommodate the larger ABS
unit This adaptability ensures that the ABS mounting bracket 306 can
15 securely house ABS units of varying dimensions without requiring
significant changes to the frame structure.
[0048] In accordance with an embodiment of the present invention,
Figure 4A illustrates a perspective view of the ABS unit 102 mounted on the
ABS mounting bracket 306. As discussed previously, the ABS mounting
20 bracket 306 is structurally supported by the first fixed bracket 302 welded
on the footrest cross member 204 and the second fixed bracket 304 welded
on the swingarm cross member 206. The first fixed bracket 302 and the
second fixed bracket 304 provide lateral support and serve as anchoring
points for the ABS mounting bracket 306. As discussed previously, each of
25 the openings provided on the first fixed bracket 302 and the second fixed
bracket 304 corresponds to the opening provided on the ABS mounting
bracket 306 to receive the fastening means 402. Additionally, at least one
opening 404 is provided on the ABS mounting bracket 306 to secure the
housing of the ABS unit 102 to the ABS mounting bracket 306. The
30 placement of the openings on the ABS mounting bracket 306 and the first
fixed bracket 302 and the second fixed bracket 304 is such that it ensures
12
that the ABS unit 102 remains firmly mounted during vehicle operation and
allows for ease of assembly and serviceability.
[0049] In accordance with an embodiment of the present invention,
Figure 4B presents an exploded view of the ABS mounting bracket 306 and
the ABS unit 102. This figure clearly illustrates the 5 ABS unit 102 and the
ABS mounting bracket 306, along with the interface components. As
discussed previously, the ABS mounting bracket 306 comprises a plurality
of dampeners 308 positioned at each point of contact between the housing
of the ABS unit 102 and the ABS mounting bracket 306 to absorb vibrations
10 transmitted from the frame 202 of the EV 100.
[0050] In accordance with example implementations of the present
subject matter, the dampener 308 is positioned between a mounting point
of the ABS mounting bracket 306 and the second fixed bracket 304 to
isolate the ABS unit 102 from vibrations originating at the swingarm cross
15 member 206 during vehicle operation.
[0051] In an example embodiment, the dampeners 308 are made of a
vibration-absorbing material selected from a group consisting of rubber,
polyurethane, silicone elastomer, and thermoplastic elastomer. In a
preferred embodiment, the dampeners are made of rubber.
20 [0052] In accordance with an embodiment of the present invention,
Figure 4C illustrates a side view of the ABS unit 102 mounted on the frame
202. This figure shows the ABS unit 102 positioned between the footrest
cross member 204 and the swingarm cross member 206. The ABS unit 102
is supported by an ABS mounting bracket 306, which is secured on a first
25 fixed bracket 302 and a second fixed bracket 304.
[0053] As discussed previously, the first fixed bracket 302 and the
second fixed bracket 304 are welded on the footrest cross member 204 and
the swingarm cross member 206 of the frame 202, respectively, to serve as
anchoring points for the ABS mounting bracket 306. The figure further
30 depicts the bolts used to fasten the ABS mounting bracket 306 to the first
13
and second fixed brackets, shown in an unfastened state to highlight the
assembly interface.
[0054] At the connecting point where the ABS mounting bracket 306
connects with the first fixed bracket 302, a first opening 406 is provided to
accommodate a first fastening means 402-1, 5 such as a bolt. Similarly, a
second opening (not shown) is provided at the point where the ABS
mounting bracket 306 connects with the second fixed bracket 304, to
receive a second fastening means 402-2. These openings are located such
that they ensure secure attachment and structural integrity of the ABS unit
10 102 within the frame of the vehicle.
[0055] In an example, the opening provided on the ABS mounting
bracket 306, along with the corresponding openings in the first fixed bracket
302 and the second fixed bracket 304, is configured as a through hole
adapted to receive a fastening means 402 for securing the ABS mounting
15 bracket 306 to the respective fixed brackets.
[0056] Although the subject matter has been described in considerable
detail with reference to certain examples and implementations thereof, other
implementations are possible. As such, the present disclosure should not
be limited to the description of the preferred examples and implementations
20 contained therein.
25
30
14
I/We Claim:
1. An electric vehicle (EV) (100), comprising:
a frame (202) comprising:
a pair of longitudinally extending upper 5 tubular members and
a pair of longitudinally extending lower tubular members arranged to
define an enclosure therebetween to accommodate a battery pack of
the EV (100), wherein the tubular members of either pair comprise
left-hand side (LH) members and right-hand side (RH) members
10 disposed in a spaced-apart and substantially parallel manner;
a footrest cross member (204), extending laterally across a
LH member and a RH member, to mount a front footrest assembly
of the EV (100);
a swingarm cross member (206) to serve as a pivot for a
15 swingarm of the EV (100), the swingarm cross member (206) being
positioned below the footrest cross member (204) and extends
laterally across the LH member and RH member;
a motor mounted on the frame (202) in front of the swingarm cross
member (206); and
20 an anti-lock braking system (ABS) unit (102) mounted on the frame (202)
between the footrest cross member (204) and the swingarm cross member
(206), behind the motor, below the enclosure for the battery pack and in
front of a rear wheel of the EV (100).
25 2. The electric vehicle (100) as claimed in claim 1, wherein the frame (202)
comprises a first fixed bracket (302) welded on the footrest cross member
(204) and a second fixed bracket (304) welded on the swingarm cross
member (206), to support the ABS unit (102).
30 3. The electric vehicle (100) as claimed in claim 2, wherein the frame (202)
comprises an ABS mounting bracket (306) mounted on the first fixed
15
bracket (302) and the second fixed bSracket (304), to hold the ABS unit
(102).
4. The electric vehicle (100) as claimed in claim 3, wherein the ABS
mounting bracket (306) comprises a plurality of 5 dampeners (308) positioned
at each point of contact between a housing of the ABS unit (102) and the
ABS mounting bracket (306), to absorb vibrations transmitted from the
frame of the EV (100).
10 5. The electric vehicle (100) as claimed in claim 4, wherein at least one of
the plurality of dampeners (308) is positioned between a mounting point of
the ABS mounting bracket (306) and the second fixed bracket (304), to
absorb vibrations transmitted from the frame (202) of the EV (100).
15 6. The electric vehicle (100) as claimed in claim 1, wherein each of the
plurality of dampeners (308) is made of a vibration-absorbing material
selected from a group consisting of rubber, polyurethane, silicone
elastomer, and thermoplastic elastomer.
20 7. The electric vehicle (100) as claimed in claim 1, comprising a body panel
(120) positioned behind the front wheel of the EV to protect the ABS unit
(102) from mud and water.
8. The electric vehicle (100) as claimed in claim 1, wherein the frame (202)
25 comprises a plurality of clips (118) configured to retain a brake fluid inlet
hose (112), a brake fluid outlet hose (114), and a wiring harness, coupled
to the ABS unit (102), in position along the frame (202).
30
16
ABSTRACT
PLACEMENT OF ANTI-LOCK BRAKING SYSTEM (ABS) IN ELECTRIC
VEHICLES
The claims relate to an electric vehicle (EV) (100) that comprises a frame
(202) having a pair of longitudinally extending 5 upper tubular members and
lower tubular members. The upper and lower tubular members are arranged
to define an enclosure for a battery pack, with each pair including left-hand
side (LH) and right-hand side (RH) members disposed in a spaced-apart,
substantially parallel manner. A footrest cross member (204) is positioned
10 laterally across the frame to mount a front footrest assembly. A swingarm
cross member (206), located below the footrest cross member (204), serves
as a pivot for a swingarm and also extends laterally across the frame (202).
An anti-lock braking system (ABS) unit (102) is mounted between the
footrest cross member (204) and the swingarm cross member (206), behind
15 a motor, below the battery pack enclosure, and in front of a rear wheel.
(To be published with Figure 1)
17 , Claims:I/We Claim:
1. An electric vehicle (EV) (100), comprising:
a frame (202) comprising:
a pair of longitudinally extending upper 5 tubular members and
a pair of longitudinally extending lower tubular members arranged to
define an enclosure therebetween to accommodate a battery pack of
the EV (100), wherein the tubular members of either pair comprise
left-hand side (LH) members and right-hand side (RH) members
10 disposed in a spaced-apart and substantially parallel manner;
a footrest cross member (204), extending laterally across a
LH member and a RH member, to mount a front footrest assembly
of the EV (100);
a swingarm cross member (206) to serve as a pivot for a
15 swingarm of the EV (100), the swingarm cross member (206) being
positioned below the footrest cross member (204) and extends
laterally across the LH member and RH member;
a motor mounted on the frame (202) in front of the swingarm cross
member (206); and
20 an anti-lock braking system (ABS) unit (102) mounted on the frame (202)
between the footrest cross member (204) and the swingarm cross member
(206), behind the motor, below the enclosure for the battery pack and in
front of a rear wheel of the EV (100).
25 2. The electric vehicle (100) as claimed in claim 1, wherein the frame (202)
comprises a first fixed bracket (302) welded on the footrest cross member
(204) and a second fixed bracket (304) welded on the swingarm cross
member (206), to support the ABS unit (102).
30 3. The electric vehicle (100) as claimed in claim 2, wherein the frame (202)
comprises an ABS mounting bracket (306) mounted on the first fixed
15
bracket (302) and the second fixed bSracket (304), to hold the ABS unit
(102).
4. The electric vehicle (100) as claimed in claim 3, wherein the ABS
mounting bracket (306) comprises a plurality of 5 dampeners (308) positioned
at each point of contact between a housing of the ABS unit (102) and the
ABS mounting bracket (306), to absorb vibrations transmitted from the
frame of the EV (100).
10 5. The electric vehicle (100) as claimed in claim 4, wherein at least one of
the plurality of dampeners (308) is positioned between a mounting point of
the ABS mounting bracket (306) and the second fixed bracket (304), to
absorb vibrations transmitted from the frame (202) of the EV (100).
15 6. The electric vehicle (100) as claimed in claim 1, wherein each of the
plurality of dampeners (308) is made of a vibration-absorbing material
selected from a group consisting of rubber, polyurethane, silicone
elastomer, and thermoplastic elastomer.
20 7. The electric vehicle (100) as claimed in claim 1, comprising a body panel
(120) positioned behind the front wheel of the EV to protect the ABS unit
(102) from mud and water.
8. The electric vehicle (100) as claimed in claim 1, wherein the frame (202)
25 comprises a plurality of clips (118) configured to retain a brake fluid inlet
hose (112), a brake fluid outlet hose (114), and a wiring harness, coupled
to the ABS unit (102), in position along the frame (202).