A vibration test fixture for automobile drive

Abstract

This utility model discloses a vibration test fixture for an automotive drive unit, belonging to the field of automotive component testing technology. It includes a base plate, a support plate, a side bracket, and a hanger. The support plate is disposed on the base plate. One end of the side bracket is connected to the support plate, and the other end is connected to the hanger. The hanger is disposed above the base plate, forming a clamping position for mounting the automotive drive unit between the hanger and the base plate. It also includes an adjustable limiting structure disposed on the outward-facing side wall of the support plate. The adjustable limiting structure includes a baffle, a travel rod, and a limiting member. One end of the travel rod is connected to the support plate, and the baffle is fixed to the travel rod by the limiting member. It can be used to match different automotive drive units. The test fixture can be moved and installed as a whole on different testing equipment and in different testing environments for performance testing.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing technology, specifically to an automotive drive vibration test fixture. Background Technology

[0002] With the rapid development of electronic technology and the continuous improvement of automotive intelligence, traditional bulky mechanical structures are being replaced by smaller, more intelligent electromechanical hybrid structures, with electric door actuators being a typical example. As a core component controlling critical vehicle operations such as door unlocking and closing, the reliability of electric door actuators is crucial to overall vehicle safety, and their durability and service life have become a focus of attention for automakers, parts suppliers, and consumers. Therefore, during the product design process, rigorous durability tests such as vibration durability, mechanical shock durability, high and low temperature cycle durability, high temperature operation durability, and damp heat durability tests must be conducted to verify their lifespan and reliability under specified operating conditions. For example, the vibration shock durability test requires mounting the actuator prototype on a special fixture and applying random vibrations with an RMS of 1.5g in three vertical axes, and performing mechanical shock tests with a peak acceleration of 30g in all three axes. To realistically simulate the conditions of a real vehicle, the actuator must be bolted to the test fixture in the same way it is installed on the door and body.

[0003] In a complete durability verification process, in addition to the vibration and shock tests conducted on a vibration table, the actuator also needs to undergo long-term power-on functional life testing under non-vibration conditions, such as simulating tens of thousands of door opening and closing cycles. Existing testing methods generally employ two different fixtures for fixation: one for simulating the actual vehicle's installation posture on the vibration table for vibration / shock testing; and the other for power-on operation testing of the actuator on a static platform after removal from the vibration table. When switching between vibration durability testing and functional life testing, operators must disassemble the actuator prototype for replacement. Repeated disassembly and replacement are not only cumbersome and time-consuming, reducing testing efficiency, but also prone to wear, loosening, or positioning deviations at the prototype's connection interfaces during disassembly and assembly, affecting the accuracy and consistency of test results and increasing testing costs. Therefore, a detachable, modular automotive actuator fixture is needed to meet the needs of both dynamic and static testing. Utility Model Content

[0004] The purpose of this invention is to provide a vibration test fixture for automotive drives, which solves the problem that existing automotive drive dynamic and static tests require changing fixtures, resulting in time-consuming, labor-intensive, and increased wear.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0006] A vibration test fixture for an automotive drive unit includes a base plate, a support plate, a side bracket, and a hanger. The support plate is disposed on the base plate. One end of the side bracket is connected to the support plate, and the other end is connected to the hanger. The hanger is disposed above the base plate, forming a clamping position for mounting the automotive drive unit between the hanger and the base plate. The fixture also includes an adjustable limiting structure disposed on the outward-facing side wall of the support plate. The adjustable limiting structure includes a baffle, a travel rod, and a limiting member. One end of the travel rod is connected to the support plate, and the baffle is fixed to the travel rod by the limiting member. This fixture can be used to match different automotive drive units. The test fixture can be moved and installed as a whole on different test equipment and in different test environments for performance testing.

[0007] Furthermore, the pallet is provided with a through groove, a first connecting hole and a first connector. The through groove is provided on the pallet, and the output shaft of the vehicle driver extends out of the pallet through the through groove. The first connecting hole is provided on one side of the through groove, and the first connector passes through the first connecting hole to connect the vehicle driver to the pallet, for positioning and fixing the front end of the vehicle driver.

[0008] Furthermore, the hanger is provided with a second connecting hole and a second connecting member. The second connecting member passes through the second connecting hole to fix the car driver to the hanger, which is used to fix the rear end of the car driver and, together with the first connecting hole, suspends and fixes the car driver in the air.

[0009] Furthermore, the baffle is provided with a through hole, and the output shaft of the car driver is slidably connected in the through hole to position the output shaft and meet the needs of car drivers with different strokes.

[0010] Preferably, the front end of the vehicle drive is connected to the tray, and the rear end of the vehicle drive is connected to the hanger, with balanced front and rear support completely fixing the vehicle drive.

[0011] Alternatively, the travel rod is a threaded rod, and the limiting member includes multiple nuts, all of which are threaded onto the threaded rod for adjusting the length of the fixable output shaft.

[0012] Preferably, the system also includes a support member, the upper part of which is connected to the side bracket, the lower part of which is connected to the base plate, and the support member is positioned close to the hanger to suppress deformation of the hanger and the side bracket.

[0013] Furthermore, multiple parallel clamping positions are provided between the tray and the hanger, and a car driver can be installed in each clamping position. Multiple car drivers can be installed in parallel for testing, which improves the testing efficiency.

[0014] Furthermore, a partition is provided between the plurality of clamping positions, with one side wall of the partition connected to the support plate and the other side wall connected to the base plate, separating adjacent clamping positions in the horizontal direction, thereby improving support strength and preventing mutual interference between vehicle drives.

[0015] Furthermore, the base plate is provided with multiple mounting slots, which are spaced apart, and the mounting slots are countersunk grooves, which facilitates the overall installation of the test fixture onto the test equipment.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) The car drive vibration test fixture is composed of a base plate, a support plate, a side bracket and a hanger to form a frame structure. The frame structure is provided with a clamping position for installing the car drive. The frame structure can be detached and installed with external equipment to realize overall movement, which facilitates quick disassembly and replacement of the car drive between static and dynamic tests. The support plate is provided with an adjustable limit structure, and the adjustable limit structure is provided with an adjustable stroke rod, which can meet the dynamic test of car drives with different extension strokes. It has a wide range of applications.

[0018] (2) The vehicle drive vibration test fixture has holes for connecting the vehicle drive on the tray and the hanger. The tray and the hanger are located at the front and rear ends of the vehicle drive, respectively, and can be used to position and fix the vehicle drive. There are multiple parallel clamping positions in the frame structure, which can clamp multiple vehicle drives at the same time for testing, reducing repeated disassembly and assembly steps and improving testing efficiency. Attached Figure Description

[0019] Figure 1 An isometric view of the automotive drive vibration test fixture provided by this utility model;

[0020] Figure 2 A front view of the automotive drive vibration test fixture provided by this utility model;

[0021] Figure 3 A side view of the automotive drive vibration test fixture provided by this utility model;

[0022] Figure 4 Rear view of the automotive drive vibration test fixture provided by this utility model;

[0023] Figure 5 for Figure 2 Cross-sectional view along the upper AA line;

[0024] Figure 6 for Figure 2 Cross-sectional view along the upper BB line.

[0025] Figure label:

[0026] 1. Base plate; 11. Mounting slot; 2. Support plate; 21. First connecting hole; 22. First connecting piece; 23. Through slot; 3. Side bracket; 4. Hanger; 41. Second connecting hole; 42. Second connecting piece; 5. Adjustable limiting structure; 51. Baffle; 52. Limiting piece; 53. Stroke rod; 54. Through hole; 6. Partition; 7. Car driver; 71. Motor; 72. Controller; 73. Output shaft; 8. Support piece. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] Example 1

[0029] like Figures 1-6 As shown, this embodiment discloses a vibration test fixture for an automobile drive unit, including a base plate 1, a support plate 2, a side bracket 3, and a hanger 4. The support plate 2 is disposed on the base plate 1. One end of the side bracket 3 is connected to the support plate 2, and the other end is connected to the hanger 4. The hanger 4 is disposed above the base plate 1, and a clamping position for installing an automobile drive unit 7 is formed between the hanger 4 and the base plate 1. The fixture also includes an adjustable limiting structure 5, which is disposed on the outward side wall of the support plate 2 and is used to match automobile drive units 7 with different strokes. The adjustable limiting structure 5 includes a baffle 51, a stroke rod 53, and a limiting member 52. One end of the stroke rod 53 is connected to the support plate 2, and the baffle 51 is fixed to the stroke rod 53 by the limiting member 52. The limiting member 52 can change the position of the baffle 51 on the stroke rod 53. After the automobile drive unit 7 is installed in the clamping position, the test fixture can be moved as a whole to the test equipment, with fewer disassembly and assembly steps and high test efficiency.

[0030] Preferably, the adjustable limiting structure 5 is detachably mounted on the tray 2 and can be removed during partial testing.

[0031] Furthermore, the tray 2 is provided with a through groove 23, a first connecting hole 21 and a first connecting member 22. The through groove 23 is provided on the tray 2, and the output shaft 73 of the car driver 7 extends out of the tray 2 through the through groove 23 and is fixed by the adjustable limiting structure 5. The first connecting hole 21 is provided on one side of the through groove 23, and the first connecting member 22 passes through the first connecting hole 21 to connect the car driver 7 to the tray 2 for fixing the front end of the car driver 7. The through groove 23 is used for the output shaft 73 to pass through.

[0032] Furthermore, the hanger 4 is provided with a second connecting hole 41 and a second connecting member 42. The second connecting member 42 passes through the second connecting hole 41 to fix the car driver 7 to the hanger 4, and is used to fix the rear end of the car driver 7 in conjunction with the first connecting hole 21 to achieve stable hoisting of the car driver 7.

[0033] Preferably, the baffle 51 is provided with a through hole 54, and the output shaft 73 of the car driver 7 is slidably connected in the through hole 54. The through hole 54 is used to guide the stable extension and retraction of the output shaft 73 and can facilitate the action detection by external equipment.

[0034] Preferably, the front end of the vehicle driver 7 is connected to the tray 2, and the rear end of the vehicle driver 7 is connected to the hanger 4, which supports both the front and rear ends of the vehicle driver 7, so that the vehicle driver 7 can remain stable when it is in motion. The end faces of the tray 2 and the hanger 4 can also be used as positioning limits for the vehicle driver 7, ensuring accurate positioning during installation. The controller 73 of the vehicle driver 7 is located in the lower empty space, leaving space for the plug-in terminals in different directions, thus meeting the testing needs of vehicle driver 7 with different structural forms.

[0035] More preferably, the stroke rod 53 is a threaded rod, and the limiting member 52 includes multiple nuts, all of which are threaded onto the threaded rod. The nuts clamp the baffle 51, and the distance between the baffle 51 and the support plate 2 can be adjusted to meet the testing needs of different stroke states of the car drive 7. The baffle 51, together with the limiting member 52, can completely fix the output shaft 73 to completely simulate the working state.

[0036] Furthermore, it also includes a support member 8, the upper part of which is connected to the side bracket 3, and the lower part of which is connected to the base plate 1. The support member 8 is located close to the hanger 4. Since the support member 8 provides lateral support for the hanger 4, the vehicle drive 7 is installed in a suspended manner, and the lower part does not contact the base plate 1. The support member 8 supports the hanger 4 to prevent the hanger 4 and the side bracket 3 from undergoing excessive bending deformation and resonance during testing.

[0037] Furthermore, the base plate 1 is provided with multiple mounting slots 11, which are spaced apart. The mounting slots 11 are countersunk strip slots. The mounting slots 11 are used to fix the test fixtures to the test equipment. The countersunk strip slots facilitate quick assembly during installation.

[0038] The procedure for using this automotive drivetrain vibration testing fixture is as follows:

[0039] Place the car driver 7 into the clamping position, aligning the self-existing hole on the motor 71 part of the car driver 7 with the first connecting hole 21, and then aligning the self-existing connecting hole at the tail of the motor 71 with the second connecting hole 41. Tighten the first connector 22 and the second connector 42 into the holes respectively. The output shaft 73 of the car driver 7 extends through the through groove 23 and enters the adjustable limiting structure 5. Adjust the limiting member 52 so that the output shaft 73 can extend and retract within the through hole 54. Tighten the first connector 22 and the second connector 42, and move the entire test clamp to the test equipment for performance testing.

[0040] Example 2

[0041] This embodiment also discloses a vehicle drive vibration test fixture. Multiple parallel clamping positions are provided between the tray 2 and the hanger 4. Each clamping position can be used to install a vehicle drive 7. Multiple vehicle drives can be installed on a single fixture at one time for parallel performance testing, which improves the testing efficiency.

[0042] Furthermore, a partition 6 is provided between multiple clamping positions. One side wall of the partition 6 is connected to the support plate 2, and the other side wall is connected to the base plate 1, which separates adjacent clamping positions in the horizontal direction. The partition 6 can also improve the strength of the connection between the support plate 2 and the base plate 1, and prevent the car drive 7 in different clamping positions from affecting each other when they are in operation.

[0043] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and any modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A vibration test fixture for an automobile drive unit, comprising a base plate (1), a support plate (2), a side bracket (3), and a hanger (4), wherein the support plate (2) is disposed on the base plate (1), one end of the side bracket (3) is connected to the support plate (2), and the other end is connected to the hanger (4), the hanger (4) is disposed above the base plate (1), and a clamping position for mounting an automobile drive unit (7) is formed between the hanger (4) and the base plate (1), characterized in that: It also includes an adjustable limiting structure (5), which is disposed on the outward side wall of the pallet (2). The adjustable limiting structure (5) includes a baffle (51), a stroke rod (53) and a limiting member (52). One end of the stroke rod (53) is connected to the pallet (2), and the baffle (51) is fixed to the stroke rod (53) by the limiting member (52).

2. The automotive drive vibration test fixture according to claim 1, characterized in that: The pallet (2) is provided with a through groove (23), a first connecting hole (21) and a first connector (22). The through groove (23) is provided on the pallet (2). The output shaft (73) of the car driver (7) passes through the through groove (23) and extends to the outside of the pallet (2). The first connecting hole (21) is provided on one side of the through groove (23). The first connector (22) passes through the first connecting hole (21) to connect the car driver (7) to the pallet (2).

3. The automotive drive vibration test fixture according to claim 2, characterized in that: The hanger (4) is provided with a second connecting hole (41) and a second connector (42), and the second connector (42) passes through the second connecting hole (41) to fix the car driver (7) to the hanger (4).

4. The automotive drive vibration test fixture according to claim 3, characterized in that: The baffle (51) is provided with a through hole (54), and the output shaft (73) of the vehicle driver (7) is slidably connected in the through hole (54).

5. The automotive drive vibration test fixture according to claim 4, characterized in that: The front end of the vehicle driver (7) is connected to the tray (2), and the rear end of the vehicle driver (7) is connected to the hanger (4).

6. The automotive drive vibration test fixture according to claim 1, characterized in that: The travel rod (53) is a threaded rod, and the limiting member (52) includes a plurality of nuts, all of which are threaded onto the threaded rod.

7. The automotive drive vibration test fixture according to claim 1, characterized in that: It also includes a support member (8), the upper part of which is connected to the side bracket (3), the lower part of which is connected to the base plate (1), and the support member (8) is located close to the hanger (4).

8. The automotive drive vibration test fixture according to claim 7, characterized in that: Multiple parallel clamping positions are provided between the pallet (2) and the hanger (4), and a car driver (7) can be installed in each clamping position.

9. The automotive drive vibration test fixture according to claim 1, characterized in that: A partition (6) is provided between the multiple clamping positions. One side wall of the partition (6) is connected to the support plate (2), and the other side wall is connected to the bottom plate (1), thus separating adjacent clamping positions in the horizontal direction.

10. The automotive drive vibration test fixture according to any one of claims 1-9, characterized in that: A plurality of mounting grooves (11) are arranged on the bottom plate (1), the mounting grooves (11) are arranged at intervals, and the mounting grooves (11) are strip-shaped grooves.

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