Description:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 13]

Title:
MODULAR FIXTURE FOR VEHICLE LEVEL UNIAXIAL VIBRATION TESTING ON A SHAKER TABLE

NUMEROS MOTORS PRIVATE LIMITED
An Indian Start-Up
Having Address
58, 15th Cross 2nd Phase, J.P. Nagar
Bengaluru Karnataka 560078

The following specification particularly describes the invention and the manner in which it is to be performed.
FIELD OF THE INVENTION
[0001] The present invention relates to test setup, more particularly relates to the test setup for testing two-wheeler chassis.

BACKGROUND OF THE INVENTION
[0002] Conventional testing methods often fall short in replicating real-world conditions that two-wheelers encounter on various terrains. Specifically testing procedures often lack the precision and realism needed to simulate the diverse vibrational conditions encountered by two-wheelers in real-world scenarios with respect to loads and test boundary conditions.
[0003] An exemplary prior art discloses a vehicle frame vibration test device. Further prior art proposes a solution for current vehicle frame vibration test device that fail to simulate force bearing conditions of a vehicle frame in an actual working conduction and obtain reference values of test data are relatively low. The vehicle frame vibration test device as proposed in the prior art comprises a pedestal and vibration mechanisms arranged on the pedestal and is characterized in that two separated insulation seats are arranged on the pedestal. The vibration mechanisms are arranged on the installation seats. A front fork clamp is arranged on one of the installation seats; a back fork clamp is arranged on the other installation seat; and a motor is in transmission linkage with the vibration mechanisms on the installation seats.
[0004] Another exemplary prior art discloses a test stand for testing fatigue, durability and vibration of a motorcycle frame wherein drive devices are fixed at the front and the rear ends of a base respectively and connected with a front support bracket and a rear support bracket respectively. Further two groups of supporting seats are arranged at the rear end of the base, the first supporting seat is positioned on the two sides of the rear support bracket, the second supporting seat is parallel with the first supporting seat and arranged before the rear support bracket, and loading devices are fixed on the first supporting seat and the second supporting seat through pin shafts respectively; an upright column is mounted beside the second supporting seat, and a hanging device is mounted at the top of the upright column; and the test stand also comprises a data processing system. The test stand can better simulates driving on road and reduces noise, so as to be like the actual working condition as similar as possible; and automatic loading can be realized, the loading force is controllable, the data of dynamic loading force, motorcycle deformation and vibration frequency can be automatically collected.
[0005] Therefore, there is a need in the art to bridge the gap by between a comprehensive and accurate platform for evaluating the chassis's performance under vibration stress.

SUMMARY
[0006] In an implementation of the present disclosure a chassis testing system 300, is disclosed. The system comprises a shaker table 302. The system may further comprise a fixture assembly 200. The fixture assembly 200 comprises a first base plate 102 having a trapezoidal shape. The first base plate 102 may comprise a smaller surface 104, and a bigger surface 106. Further a second base plate 202 mounted on the bigger surface 106 of the first base plate 102.

BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Reference will be made to embodiments of the invention, examples of which may be illustrated in the accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
[0008] FIG. 1 illustrates an exemplary embodiment in accordance with the present disclosure;
[0009] FIG. 2 illustrates an exemplary embodiment of a fixture assembly 200, in accordance with the present disclosure; and
[0010] FIG. 3, illustrates a chassis testing system in accordance with the present disclosure.

BRIEF DESCRIPTION OF THE INVENTION
[0011] Some embodiments of the present disclosure, illustrating all its features, will now be discussed in detail. It must also be noted that as used herein and in the appended claims, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. Although any systems and methods similar or equivalent to those described herein can be used for testing a two-wheeler chassis, with or without the panels.
[0012] Various embodiments of the disclosure provide a system and an apparatus for testing a two-wheeler chassis, with or without the panels. The system and the apparatus as disclosed may comprise a fixture assembly may be mounted over a shaker table. The fixture assembly may be fabricated using aluminium, and/or aluminium composite. Further the fixture assembly may comprise a base plate. The base plate may be mounted or fixed on a base structure fixture ground/shaker table using Allen bolts. Further in an aspect a front fork support box may be mounted on the base plate using hexagonal bolt. Further a front fork mount fixture may be mounted on the front fork support box using hexagonal bolt. The hexagonal bolt may be a M10*20 hexagonal bolt. The front fork mount fixture may be configured to mechanically couple with a front fork of a chassis to be tested.
[0013] In accordance with the present aspect, further a main stand mount plate may be fixed on the base plate using the hexagonal bolt. A main stand mount fixture may be mounted on the main stand mount plate using hexagonal bolt. The main stand mount fixture, in an exemplary aspect may be mechanically coupled to a stand assembly provided on the chassis.
[0014] The exemplary embodiment, may further comprise a rear suspension support box. The rear suspension support box along with a rear shock absorber fixture may be fixed on the base plate using hexagonal bolt. Further rear fork assembly of the chassis may be mechanically coupled with the rear shock absorber fixture.
[0015] In another aspect of the exemplary embodiment, an Under bracket/T stem of a front fork of the chassis may be mounted on the front fork mount fixture. The front fork may be removed from Under bracket to enable the assembly. Further the main stand portion of the chassis may be mounted on the stand mount fixture. In accordance with the present aspect the rear shock absorber mounting of the chassis may be mounted on the rear suspension mount assembly box on the fixture.
[0016] In accordance with the exemplary embodiment, the chassis mounted on the fixture assembly may be further mounted/fixed with all the plastic panels, mirrors, fasteners, wiring harness and electrical parts. Upon fixing all the plastic panels, it should be verified again by designer for proper samples, torque values etc.
[0017] In another exemplary another aspect No panels or mounting brackets should be broken during assembly of the vehicle om the fixture. Vehicles may be fitted without motor, front fork and main stand in the fixture. Rest all samples may be mounted in the vehicle. Further functionality of the vehicle must be verified before and after assembling the vehicle in the fixture.
[0018] In accordance with another exemplary embodiment, an apparatus or a fixture assembly may comprise a first base plate. The first base plate may have a trapezoidal shape. Further the trapezoidal shape of the first base plate may comprise a smaller surface, and a bigger surface, and further the smaller surface, and the bigger surface may be parallel to each other.
[0019] The smaller surface may be in mechanical connection with the shaker table. The shaker table may be configured to generate vibrations, and transfer the vibration to the first base plate. Further the legs and the surfaces of the trapezoidal shaped first base plate, may be welded with each other.
[0020] A second base plate may be mounted on the bigger surface of the trapezoidal shaped first base plate. The second base plate may be fastened using bolts or welded onto the first base plate. The second base plate may further comprise a plurality of threaded holes, provided on a surface of the second base plate in a defined pattern. Further the surface comprising the plurality of threaded hold, is adjacent to the bigger surface of the first base plate.
[0021] In an accordance with the exemplary the mounting of the second base plate on the first base plate prevents damage to the second base plate during mounting a shaker device. Further the first base plate prevents developing cracks on first base plate during mounting of other components on the second base plate.
[0022] Further a front fork support mount may be mounted and fastened on the second base plate using bolts. The front fork support mount may be positioned on a first end of the second base plate. Further a front fork fixture may be mounted on the front fork support mount. The front fork fixture may be fastened to the front fork support mount using bolts.
[0023] Further in an aspect of the present exemplary embodiment, a rear suspension support mount may be fastened on the second base plate. The suspension support mount may be at a distal end from the front fork support mount. The rear suspension support mount, and front fork support mount are placed at distance from each other so as to enable mounting and testing of plurality two-wheeler chassis having different wheel base. The positioning and distance between the rear suspension support mount, and front fork support mount may be varied to enable mounting of two-wheeler chassis with a defined wheel base.
[0024] A rear suspension support box may be mounted and fastened on the rear suspension support mount using a bolt. Further in accordance with the exemplary embodiment, a main stand mount plate may be mounted on the second base plate, and positioned at distance from the rear suspension support mount. The position of the main stand mount plate is such that, it enables mechanical connection between a main stand assembly of the chassis. The main stand mount plate may further comprise a main stand mount fixture fastened using a bolt.
[0025] In accordance with the present exemplary embodiment, an Under bracket/T stem of a front fork of the chassis may be mounted on the front fork mount fixture. The front fork may be removed from Under bracket to enable the assembly. Further the main stand portion of the chassis may be mounted on the stand mount fixture. In accordance with the present aspect the rear shock absorber mounting of the chassis may be mounted on the rear suspension mount assembly box on the fixture.
[0026] Part List
? First base plate 102
? Smaller surface 104
? Bigger surface 106
? Legs 108
? Fixture assembly 200
? Second base plate 202
? Plurality of threaded holes 204
? Surface 206
? Front fork support mount 208
? First end 210
? Front fork fixture 212
? Rear suspension support box214
? Rear suspension support mount 216
? Main stand mount plate 218
? Main stand mount fixture 220
? Shaker table 302
[0027] Referring to FIG. 1 illustrates an exemplary embodiment in accordance with the present disclosure. The exemplary embodiment in an aspect may comprise a first base plate 102. The first base plate 102 may have a trapezoidal shape. Further the trapezoidal shape of the first base plate 102 may comprise a smaller surface 104, and a bigger surface 106. Further at least four legs 108, of equal length may be provided between the smaller surface 104, and the bigger surface 106. The at least four legs 108, are provided at four corner of the smaller surface 104, and connected with four corner of the bigger surface 106.
[0028] In an aspect of the present disclosure the at least four legs 108 and the surfaces 104, 108 of the trapezoidal shaped first base plate, may be welded with each other.
[0029] Now referring to FIG. 1 and FIG. 2 a fixture assembly 200, in accordance with the exemplary embodiment may comprise a second base plate 202 mounted on the bigger surface 106 of the trapezoidal shaped first base plate 102. The second base plate 202 may be fastened using bolts or welded onto the first base plate 102. The second base plate 202 may further comprise a plurality of threaded holes 204, provided on a surface 206 of the second base plate 202 in a defined pattern. Further the surface 206 comprising the plurality of threaded hold 204, is adjacent to the bigger surface 106 of the first base plate 102.
[0030] Further a front fork support mount 208 may be mounted and fastened on the second base plate 202 using bolts. The front fork support mount 208 may be positioned on a first end 210 of the second base plate 202. Further a front fork fixture 212 may be mounted on the front fork support mount 208. The front fork fixture 212 may be fastened to the front fork support mount 208 using bolts.
[0031] Further in an aspect of the present exemplary embodiment, a rear suspension support mount 216 may be fastened on the second base plate 202. The suspension support mount 216 may be at a distal end from the front fork support mount 208. The rear suspension support mount 216, and front fork support mount 208 are placed at distance from each other so as to enable mounting and testing of plurality two-wheeler chassis having different wheel base. The positioning and distance between the rear suspension support mount 216, and front fork support mount 208 may be varied to enable mounting of two-wheeler chassis with a defined wheel base.
[0032] A rear suspension support box 214 may be mounted and fastened on the rear suspension support mount 216 using a bolt. Further in accordance with the exemplary embodiment, a main stand mount plate 218 may be mounted on the second base plate 202, and positioned at distance from the rear suspension support mount 216. The position of the main stand mount plate 218 is such that, it enables mechanical connection 220 between a main stand assembly of the chassis. The main stand mount plate may further comprise a main stand mount fixture fastened using a bolt.
[0033] Referring to FIG. 1, FIG. 2, and FIG. 3, illustrates a chassis testing system 300 in accordance with the present disclosure. The smaller surface 104 may be in mechanical connection with a shaker table 302. The shaker table 302 may be configured to generate vibrations, and transfer the vibration to the first base plate 102.
[0034] In an accordance with the exemplary the mounting of the second base plate 202 on the first base plate 102 prevents damage to the second base plate 202 during mounting on the shaker device 302. Further the first base plate 102 prevents developing cracks on first base plate 102 during mounting of other components on the second base plate 202.
[0035] Further in accordance with the exemplary embodiment, an Under bracket/T stem of a front fork of the chassis may be mounted on the front fork mount fixture 212. The front fork may be removed from Under bracket to enable the assembly. Further the main stand portion of the chassis may be mounted on the stand mount fixture 220. In accordance with the present aspect the rear shock absorber mounting of the chassis may be mounted on the rear suspension mount assembly box 214 on the fixture.
[0036] Further the chassis mounted on the fixture assembly 200 may be further mounted/fixed with all the plastic panels, mirrors, fasteners, wiring harness and electrical parts. Upon fixing all the plastic panels, and wiring harness verification, may be performed. Mounting of the plastic panels, mirror, and wiring harness on the chassis enables simulating actual road conditions.
[0037] The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, and to thereby enable others skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the scope of the present invention.

We Claim:
1. A chassis testing system 300, the system comprises:
a fixture assembly 200, wherein the fixture assembly 200 comprises:
a first base plate 102 having a trapezoidal shape, wherein the first base plate 102 may comprise a smaller surface 104, and a bigger surface 106;
a second base plate 202 mounted on the bigger surface 106 of the first base plate 102.
2. The system as claimed in claims 1, comprises at least four legs 108, provided between the smaller surface 104, and the bigger surface 106, wherein the at least four legs 108, are provided at four corner of the smaller surface 104, and connected with four corner of the bigger surface 106.
3. The system as claimed in claims 1, wherein the second base plate 202 is fastened using bolts or welded onto the first base plate 102.
4. The system as claimed in claims 1, wherein the second base plate 202 is fastened using bolts or welded onto the first base plate 102.
5. The system as claimed in claims 1, wherein the second base plate 202 comprises a plurality of threaded holes 204, provided on a surface 206 of the second base plate 202 in a defined pattern.
6. The system as claimed in claims 1, comprises a front fork support mount 208 mounted and fastened on the second base plate 202 using bolts, wherein the front fork support mount 208 is positioned on a first end 210 of the second base plate 202.
7. The system as claimed in claims 1, comprises a front fork fixture 212 mounted on the front fork support mount 208, wherein the front fork fixture 212 is fastened to the front fork support mount 208 using bolts.
8. The system as claimed in claims 1, comprises a rear suspension support mount 216 fastened on the second base plate 202, wherein the suspension support mount 216 may be at a distal end from the front fork support mount 208.
9. The system as claimed in claims 1, comprises a rear suspension support box 214 mounted and fastened on the rear suspension support mount 216 using a bolt.
10. The system as claimed in claims 1, comprises a main stand mount plate 218 mounted on the second base plate 202, and positioned at distance from the rear suspension support mount 216.

Dated this 09th Day of November, 2023

Samendra Patil
IN/PA 5092
Agent for Applicant

ABSTRACT
VIBRATION TEST FIXTURE FOR CHASSIS

A chassis testing system 300, is disclosed. The system comprises a shaker table 302. The system may further comprise a fixture assembly 200. The fixture assembly 200 comprises a first base plate 102 having a trapezoidal shape. The first base plate 102 may comprise a smaller surface 104, and a bigger surface 106. Further a second base plate 202 mounted on the bigger surface 106 of the first base plate 102.

Ref. Fig. 2 , Claims:We Claim:
1. A chassis testing system 300, the system comprises:
a fixture assembly 200, wherein the fixture assembly 200 comprises:
a first base plate 102 having a trapezoidal shape, wherein the first base plate 102 may comprise a smaller surface 104, and a bigger surface 106;
a second base plate 202 mounted on the bigger surface 106 of the first base plate 102.
2. The system as claimed in claims 1, comprises at least four legs 108, provided between the smaller surface 104, and the bigger surface 106, wherein the at least four legs 108, are provided at four corner of the smaller surface 104, and connected with four corner of the bigger surface 106.
3. The system as claimed in claims 1, wherein the second base plate 202 is fastened using bolts or welded onto the first base plate 102.
4. The system as claimed in claims 1, wherein the second base plate 202 is fastened using bolts or welded onto the first base plate 102.
5. The system as claimed in claims 1, wherein the second base plate 202 comprises a plurality of threaded holes 204, provided on a surface 206 of the second base plate 202 in a defined pattern.
6. The system as claimed in claims 1, comprises a front fork support mount 208 mounted and fastened on the second base plate 202 using bolts, wherein the front fork support mount 208 is positioned on a first end 210 of the second base plate 202.
7. The system as claimed in claims 1, comprises a front fork fixture 212 mounted on the front fork support mount 208, wherein the front fork fixture 212 is fastened to the front fork support mount 208 using bolts.
8. The system as claimed in claims 1, comprises a rear suspension support mount 216 fastened on the second base plate 202, wherein the suspension support mount 216 may be at a distal end from the front fork support mount 208.
9. The system as claimed in claims 1, comprises a rear suspension support box 214 mounted and fastened on the rear suspension support mount 216 using a bolt.
10. The system as claimed in claims 1, comprises a main stand mount plate 218 mounted on the second base plate 202, and positioned at distance from the rear suspension support mount 216.