Durability test bench for swing and impact adjustable tension bar of seat backrest of electric vehicle

Abstract

The utility model discloses an electric vehicle seat backrest swing and impact adjustable tension bar durability test bench, which belongs to the technical field of electric vehicle seat detection devices and comprises a seat moving platform, a large wheel disc, a tension bar counterweight mechanism and a pressure test frame. The seat moving platform is used for installing an automobile seat, and the seat moving platform is supported through the fixed rack; the large wheel disc is arranged on the side surface of the seat moving platform and can rotate around the pressure testing frame shaft; the tension bar counterweight mechanism is slidably arranged on a slide rail on the side surface of the fixed rack, and the pressure test frame is arranged on a pressure test frame shaft of the large wheel disc and can rotate along with the large wheel disc. According to the utility model, the process of various forms and various pressure states borne by the automobile seat can be scientifically simulated, and the process is close to the real stress state of the seat.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle seat detection, in particular to a durability test bench for the swing and impact adjustable tension rod of an electric vehicle seat backrest. Background Art

[0002] With the increasing popularity of automobile applications, the safety of automobiles has received more and more attention. It is of great significance to evaluate the durability of the tilt angle adjustment performance and the impact performance of automobile seats and backrests.

[0003] For the durability test of the tilt angle adjustment of automobile seats, the prior art generally uses the form of a heavy hammer to generate tension. For example, the existing Chinese utility model patent (application number: 202222052944.6) discloses a test device for an automobile seat frame, including a base, an installation plate movably connected to the base, a guide groove provided on the installation plate, two sliders slidably connected in the guide groove, clamping plates installed at the upper ends of the two sliders, a transmission mechanism installed on the installation plate for driving the two clamping plates to move, and a support column fixedly connected to the base. Through the cooperation of the first screw rod and the moving block, the position of the installation plate and the automobile seat frame can be adjusted, and the impact test can be carried out at different positions of the automobile seat frame. The operation is convenient. And by setting the threaded hole, the stop rod and the bolt, the rotating swing rod can be limited, so that it cannot rotate when it rotates to the set angle. During measurement, only need to swing the swing rod so that the bolt abuts against the stop rod to rotate the precise angle, without the need for the staff to observe. In this way, the impact test efficiency of the automobile seat frame is higher.

[0004] The above-mentioned test device in the prior art can adjust the position of the installation plate and the automobile seat frame, but during the test, it also uses the form of a heavy hammer to generate tension for detection. The pressure form on the seat is not comprehensive, the movement amplitude and force change are small, and the test function is single.

[0005] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a durability test bench for the swing and impact adjustable tension rod of an electric vehicle seat backrest, which can perform a single test on the impact durability of the seat backrest, or an electric vehicle seat backrest swing and impact adjustable tension rod durability test bench that alternates and mixes the two tests, and can scientifically simulate various forms and various pressure states of the automobile seat, approaching the real state of the seat under force.

[0007] To achieve the above object, the present utility model provides a durability test bench for the swing and impact adjustable tension rod of an electric vehicle seat back, including a seat moving platform, a large wheel disc, a tension rod counterweight mechanism, and a pressure test frame;

[0008] The seat moving platform is used to install the vehicle seat, and the seat moving platform is supported by a fixed bench; the large wheel disc is arranged on the side of the seat moving platform and can rotate around the pressure test frame axis; the tension rod counterweight mechanism is slidably arranged on the slide rail on the side of the fixed bench, and the pressure test frame is arranged on the pressure test frame axis of the large wheel disc and can rotate along with the large wheel disc;

[0009] An adjustable tension rod is further arranged on the side of the seat moving platform. One side of the adjustable tension rod is an arc-shaped structure, and the other side is a rod-shaped structure; a slide rail is arranged on the rod-shaped structure of the adjustable tension rod, and the adjustable tension rod is rotatably connected to the fixed bench through a tension rod swing shaft; the arc-shaped slide rail is fixed on the fixed bench through a tension rod slider mounting plate, and the adjustable tension rod is movably connected to the arc-shaped slide rail. When the adjustable tension rod moves on the arc-shaped slide rail, the adjustable tension rod can rotate around the tension rod swing axis; the tension rod counterweight mechanism is connected to the slide rail through a slider;

[0010] A small wheel disc is further arranged on the side of the seat moving platform; a steel wire rope is wound around the small wheel disc and the large wheel disc. One end of the steel wire rope is connected to the large wheel disc, and the other end passes through the wire groove of the large wheel disc, the wire groove of the small wheel disc, and the wire groove of the adjustable tension rod and is connected to the adjustable tension rod.

[0011] In one or more embodiments, a servo motor reducer is arranged on the side of the large wheel disc. The output shaft of the servo motor reducer is sequentially connected to a normally open electromagnetic clutch, the central shaft of the large wheel disc, and the pressure test frame axis, and can drive the large wheel disc and the pressure test frame axis to rotate; the normally open electromagnetic clutch is connected to the servo motor.

[0012] In one or more embodiments, an auxiliary seat slide rail fixing pressing block is arranged on the upper surface of the seat moving platform to fix the vehicle seat and can move along the auxiliary seat slide rail; the two ends of the auxiliary seat slide rail are respectively a seat quick installation and disassembly position and a vehicle seat test position.

[0013] In one or more embodiments, a seat back pressure basin is further arranged on the upper surface of the seat moving platform to support the seat back during testing.

[0014] In one or more embodiments, a rack is further fixed on the slide rail, and a pinion is arranged on the side of the tension rod counterweight mechanism, and the pinion meshes with the rack.

[0015] In one or more embodiments, a weight type tension rod counterweight body and a servo motor worm and worm gear reducer are arranged on the tension rod counterweight mechanism, and the worm output shaft of the servo motor worm and worm gear reducer is connected to the pinion.

[0016] In one or more embodiments, a piezoelectric pressure sensor and a pressure contact position sensor are arranged on the pressure test frame.

[0017] Compared with the prior art, the swing and impact adjustable tension rod durability test bench for an electric vehicle seat back according to the present utility model has the following advantages:

[0018] 1. The installation and disassembly of the tested vehicle seat are convenient and safe, and it can adapt to seat products of different types and models;

[0019] 2. It can test the front-back swing durability of the electric vehicle seat back under load;

[0020] 3. It can perform real-time automatic adjustment of the load force;

[0021] 4. It can test the impact performance durability of the electric vehicle seat back;

[0022] 5. It can test the seat back at any tilt angle;

[0023] 6. It can perform real-time automatic adjustment of the impact force; it can perform a single test on the durability test of the seat back angle adjustment, a single test on the impact durability test of the seat back, or alternately mix the two tests, which is close to the actual use conditions of the vehicle seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the swing and impact adjustable tension rod durability test bench for an electric vehicle seat back provided by an embodiment of the present utility model, where the vehicle seat back is in an inclined position;

[0025] Figure 2 It is a top view of the swing and impact adjustable tension rod durability test bench for an electric vehicle seat back provided by an embodiment of the present utility model. Among them, the adjustable tension rod is shown in the figure, and the large wheel disc reverse drive structure is not shown;

[0026] Figure 3 It is a top view of the swing and impact adjustable tension rod durability test bench for an electric vehicle seat back provided by an embodiment of the present utility model. Among them, the adjustable tension rod is not shown in the figure, and the large wheel disc reverse drive structure is shown;

[0027] Figure 4 Front view of the fixed frame;

[0028] Figure 5 Top view of the fixed frame;

[0029] Figure 6 Front view of the vehicle seat backrest in the horizontal state (180° position);

[0030] Figure 7 Front view of the vehicle seat backrest in the vertical state (90° position);

[0031] Figure 8 Front view of the vehicle seat backrest in the vertical state (90° position), wherein the counterweight mechanism in the figure is at the tail of the tension rod;

[0032] Figure 9 Front view of the pressure test frame and the large turntable rotated to the position in contact with the seat basin;

[0033] Figure 10 Front view of the counterweight mechanism of the tension rod;

[0034] Figure 11 Top view of the counterweight mechanism of the tension rod;

[0035] Figure 12 Front view of the pressure test frame.

[0036] Explanation of main reference numerals:

[0037] 1 - Quick installation and disassembly position of the seat, 2 - Vehicle seat test position, 3 - Fixed bench, 4 - Seat moving platform, 5 - Large turntable rotation mechanism, 6 - Support for the large turntable rotation mechanism, 7 - Counterweight mechanism of the tension rod, 8 - Pressure test frame, 9 - Piezoelectric pressure sensor, 10 - Small turntable shaft, 11 - Steel wire rope, 12 - Large turntable, 13 - Servo motor reducer, 14 - Support, 15 - Normally open electromagnetic clutch, 16 - Pressure test frame shaft, 17 - Seat backrest pressure basin, 18 - Small turntable, 19 - Support for the small turntable, 20 - Fixed plate, 21 - Support for the pressure test frame, 22 - Fixed frame of the large turntable rotation mechanism, 23 - Support plate for the swing shaft of the tension rod, 24 - Arc-shaped slide rail, 25 - Slide block, 26 - Adjustable tension rod, 27 - Mounting plate for the tension rod slide block, 28 - Slide block, 29 - Slide rail, 30 - Swing shaft of the tension rod, 31 - Rack, 32 - Small gear, 33 - Servo motor worm and gear reducer, 34 - Counterweight body of the tension rod, 35 - Pressure contact position sensor. Detailed implementation manners

[0038] The following will describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0039] Unless otherwise clearly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0040] As Figures 1 to 12 shown, a durability test bench for the swing and impact adjustable tension rod of an electric vehicle seat back according to an embodiment of the present invention includes a seat moving platform 4, a large wheel disc 12, a tension rod weight mechanism 7, and a pressure test frame 8.

[0041] As Figure 1 shown, the seat moving platform 4 is used to install an automotive seat, and the seat moving platform 4 is supported by a fixed bench 3. The large wheel disc 12 is arranged on the side of the seat moving platform 4 and can rotate around the pressure test frame shaft 16; a large wheel disc swing mechanism 5 is arranged on the large wheel disc 12 and is fixedly installed on the upper surface of the seat moving platform 4 through a large wheel disc swing mechanism support 6 for the swing of the rotational movement of the large wheel disc 12. The tension rod weight mechanism 7 is arranged below the seat moving platform 4. Specifically, it is slidably arranged on the slide rail 29 on the side of the fixed bench 3. The pressure test frame 8 is arranged on the pressure test frame shaft 16 of the large wheel disc 12 and can rotate along with the large wheel disc 12.

[0042] Both the large wheel disc 12 and the pressure test frame 8 are fixed to the pressure test frame shaft 16. Therefore, the large wheel disc 12 and the pressure test frame 8 always swing synchronously around the pressure test frame shaft 16, and there is no relative circumferential rotation between the large wheel disc 12 and the pressure test frame 8.

[0043] A servo motor reducer 13 is arranged on the side of the large wheel disc 12. The output shaft of the servo motor reducer 13 is sequentially connected to a normally open electromagnetic clutch 15, the central shaft of the large wheel disc 12, and the pressure test frame shaft 16, and can drive the wire rope to wind and rotate the large wheel disc 12 and the pressure test frame shaft 16. The servo motor reducer 13 is fixed on the large wheel disc swing mechanism support 6 through a support 14. The normally open electromagnetic clutch 15 is connected to the servo motor. When the normally open electromagnetic clutch 15 is opened, the servo motor will be disconnected from the pressure test frame shaft 16. When the normally open electromagnetic clutch 15 is closed, the servo motor will be connected to the pressure test frame shaft 16 and can drive the pressure test frame shaft 16 to rotate.

[0044] The upper surface of the seat moving platform 4 is provided with an auxiliary seat slide rail fixing pressing block for fixing the vehicle seat and enabling it to move along the auxiliary seat slide rail. The seat moving platform 4 facilitates the movement, installation, and disassembly of the vehicle seat. The two ends of the auxiliary seat slide rail are respectively the seat quick installation and disassembly position 1 and the vehicle seat test position 2, and the large disc 12 is arranged at the vehicle seat test position 2. As the large disc 12 rotates, the pressure test frame 8 will conduct an impact test on the backrest of the vehicle seat.

[0045] The upper surface of the seat moving platform 4 is also provided with a seat back pressure basin 17 for supporting the seat back during testing.

[0046] As Figure 3 shown, a small disc 18 is also arranged on the side of the seat moving platform 4. The small disc 18 is connected to the small disc support 19 through the small disc shaft 10, and the small disc support 19 is fixed on the side of the seat moving platform 4.

[0047] As Figure 6 shown, an adjustable tension rod 26 and an arc-shaped slide rail 24 are also arranged on the side of the seat moving platform 4. One side of the adjustable tension rod 26 is an arc-shaped structure, and the other side is a rod-shaped structure; a wire groove is arranged on the arc-shaped structure, and a slide rail 29 is arranged on the rod-shaped structure of the adjustable tension rod 26. The adjustable tension rod 26 is rotatably connected to the fixed mount 3 through the tension rod swing shaft 30. The adjustable tension rod 26 is slidably connected to the arc-shaped slide rail 24 through the slider 25 thereon. The adjustable tension rod 26 and the slider 25 thereon are fixedly connected through the tension rod slider mounting plate 27. When the slider 25 moves on the arc-shaped slide rail 24, the adjustable tension rod 26 can rotate around the tension rod swing shaft 30.

[0048] The tension rod counterweight mechanism 7 is connected to the slide rail 29 through the slider 28. A rack 31 is also fixed on the slide rail 29. A small gear 32 is arranged on the side of the tension rod counterweight mechanism 7, and the small gear 32 meshes with the rack 31. Through the cooperation between the small gear 32 and the rack 31, the position of the tension rod counterweight mechanism 7 can be fixed and adjusted.

[0049] Steel wire ropes 11 are wound around the small disc 18 and the large disc 12. One end of the steel wire rope 11 is connected to the large disc 12, and the other end is wound around the wire groove of the large disc 12, the wire groove of the small disc 18, and the wire groove of the adjustable tension rod 26 and is connected to the lower part of the arc-shaped structure of the adjustable tension rod 26.

[0050] The small pulley 18 is used to support and convey the wire rope 11 and change the direction of the pulling force; the large pulley 12 is used to convert the pulling force of the wire rope 11 into the pressure of the pressure test frame 8 on the car seat backrest. The large pulley 12 is used to drive the pressure test frame 8 to rotate backward, store potential energy, and complete the impact test on the car seat backrest at any tilt angle. The impact test can be carried out continuously and automatically without manual intervention. Through the pulling force of the wire rope 11, the large pulley 12 and the pressure test frame 8 swing forward, and by adjusting the angle of the seat backrest, the pressure test frame 8 is pushed to swing backward with the large pulley 12.

[0051] As Figure 10 and 11 shown, the tension rod counterweight mechanism 7 is provided with a weight-type tension rod counterweight 34 and a servo motor worm and worm gear reducer 33. The worm output shaft of the servo motor worm and worm gear reducer 33 is connected to the small gear 32 to control the rotation of the small gear 32, drive the tension rod counterweight mechanism 7 to reciprocate along the rod-shaped structure of the adjustable tension rod 26, and adjust the pulling force of the wire rope 11 by adjusting the distance from the swing center of the adjustable tension rod 26.

[0052] By rotating the small gear 32, the position of the tension rod counterweight mechanism 7 on the rod-shaped structure of the adjustable tension rod 26 can be adjusted, thereby realizing that the adjustable tension rod 26 provides a constant pressure and a variable pressure to the wire rope 11, so that the pressure test frame 8 provides a constant impact force and a variable impact force to the car seat backrest; by adjusting the position of the tension rod counterweight mechanism 7, the pulling force of the wire rope 11 can be adjusted automatically and steplessly, increasing the diversity of the test force change and approaching the actual use conditions of the car seat.

[0053] As Figure 12 shown, the pressure test frame 8 is provided with a piezoelectric pressure sensor 9 and a pressure contact position sensor 35. The value of the piezoelectric pressure sensor 9 multiplied by 2 is the static pressure of the pressure test mechanism on the seat, and the value of the pressure contact position sensor 35 is the load pressure value and the impact force value.

[0054] As Figure 4 shown, the fixed bench 3 is also provided with a fixing plate 20, a pressure test frame support 21, a large pulley rotation mechanism fixing frame 22 and a tension rod swing shaft support plate 23. The fixing plate 20 is arranged on the front side of the fixed bench 3, and the arc-shaped slide rail 24 is fixedly connected to the fixing plate 20; the large pulley rotation mechanism fixing frame 22 is arranged on the front side of the fixed bench 3 to support the large pulley rotation mechanism 5; the pressure test frame support 21 is arranged on the upper surface of the fixed bench 3 to support the pressure test frame 8; the tension rod swing shaft support plate 23 is placed on the front side of the fixed bench 3 to support the tension rod swing shaft 30.

[0055] The implementation method of the seat back angle adjustment durability test of the present utility model is as follows: When conducting the seat back angle adjustment durability test, the normally open electromagnetic clutch 15 is in the open state, and the large wheel disc 12 and the pressure test frame 8 are in the free swing state synchronously; the pressure test frame 8 is brought into contact with the seat back by the tension of the steel wire rope 11; by controlling the seat back to perform swing adjustment actions of any amplitude and angle, the durability performance of the seat back under load can be tested. By changing the position of the tension rod counterweight mechanism 7 on the rod-shaped structure of the adjustable tension rod 26, the pressure value of the pressure test frame 8 on the seat back can be changed; by changing the position of the tension rod counterweight mechanism 7 on the rod-shaped structure of the adjustable tension rod 26 in real time, the durability performance of the seat back can be tested under changing loads.

[0056] The implementation method of the seat back impact performance test structure of the present utility model is as follows: By rotating the large wheel disc 12 through the servo motor, the impact performance test of the car seat back can be realized during the process of the seat back tilting backward and swinging. By controlling the follow-up rotation and stop of the large wheel disc 12 through the normally open electromagnetic clutch 15 connected to the servo motor reducer 13, the pressure test frame 8 can be separated from the car seat back, and then the normally open electromagnetic clutch 15 is released, allowing the large wheel disc 12 to rotate freely. Under the tension of the steel wire rope 11, the pressure test frame 8 can hit the car seat back.

[0057] Specifically, a position contact sensor is set in the middle directly below the pressure test frame 8 facing the car seat basin; when conducting the impact test of the car seat back, the normally open electromagnetic clutch 15 is closed, the servo motor drives the steel wire rope 11 to wind, causing the large wheel disc 12 to rotate in the reverse direction, and at the same time the pressure test frame 8 swings backward. When the position contact sensor touches the seat basin, the position contact sensor is triggered, and the reverse rotation of the large wheel disc 12 stops. At this time, the impact preparation is completed. Then, according to the impact test requirements for the seat back, wait for the seat back to tilt and swing to the predetermined position, and then the normally open electromagnetic clutch 15 can be opened to complete the impact test.

[0058] In addition, the forward and backward swing of the electric vehicle seat back is realized by the drive of its built-in motor. When conducting the durability test, the forward and backward swing of the seat back can be controlled by connecting its motor drive control wire, and the swing of the seat back can be controlled by an external computer. The swing program of the seat back and the durability test are uniformly controlled and run by the test platform, enabling automated testing. During the process of the car seat back swinging upward and forward from the horizontal state (180° position) to the vertical state (90° position), the large wheel disc electromagnetic clutch is prohibited from closing, and the pressure test frame 8 should be kept in the free swing state.

[0059] The implementation method of the stepless tension adjustment structure of the tension rod of the present utility model is as follows: The tension rod counterweight mechanism 7 on the adjustable tension rod 26 is driven by the servo motor worm and worm reducer 33 and runs automatically; the reciprocating movement range of the tension rod counterweight 34 is from the head to the tail of the tension rod; the tail of the adjustable tension rod 26 extends backward beyond its own swing center axis, so that when the tension rod counterweight 34 moves to the tail position of the tension rod, the torsional moments generated by the head and tail of the entire adjustable tension rod 26 are approximately equal, and the tension of the steel wire rope 11 can be close to zero in the minimum case.

[0060] This test bench can realize the convenient and safe installation and disassembly of the tested automobile seat, and can adapt to seat products of different types and models; it can test the front and rear swing durability of the electric vehicle seat backrest under load; it can automatically adjust the real-time load force; it can test the impact performance durability of the electric vehicle seat backrest; it can test the seat backrest at any tilt angle; it can automatically adjust the real-time impact force; it can conduct a single test on the angle adjustment durability test of the seat backrest, a single test on the impact durability test of the seat backrest, or alternately mix the two tests, approaching the actual use conditions of the automobile seat.

[0061] The foregoing description of the specific exemplary embodiments of the present utility model is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. The electric vehicle seat back swing and impact adjustable tension rod durability test bench is characterized by: It includes a seat moving platform, a large wheel, a tension rod counterweight mechanism and a pressure test frame; The seat moving platform is used to install the car seat, and the seat moving platform is supported by a fixed stand; The large wheel disc has a central axis, and the large wheel disc is arranged on the side of the seat moving platform. A servo motor reducer is arranged on the side of the large wheel disc, and the output shaft of the servo motor reducer is sequentially connected to the normally open electromagnetic clutch, the central axis of the large wheel disc and the pressure test frame axis; the large wheel disc can rotate around the pressure test frame axis; The tension rod counterweight mechanism is slidably arranged on the slide rail on the side of the fixed platform, and the pressure test frame is arranged on the pressure test frame shaft connected to the large wheel disc and can rotate with the large wheel disc; The side of the seat moving platform is also provided with an adjustable tension rod and an arc-shaped slide rail, one side of the adjustable tension rod is an arc-shaped structure, and the other side is a rod-shaped structure; the slide rail is provided on the rod-shaped structure of the adjustable tension rod, and the adjustable tension rod is rotatably connected to the fixed platform through a tension rod swing axis; the arc-shaped slide rail is fixed to the fixed platform through a tension rod slider mounting plate, and the adjustable tension rod is movably connected to the arc-shaped slide rail, and when the adjustable tension rod moves on the arc-shaped slide rail, the adjustable tension rod can rotate with the tension rod swing axis as the center; the tension rod counterweight mechanism is connected to the slide rail through a slider; A small wheel disc is also provided on the side of the seat moving platform; a steel wire rope is wound around the small wheel disc and the large wheel disc, one end of the steel wire rope is connected to the large wheel disc, and the other end is connected to the adjustable tension rod by passing through the wire groove of the large wheel disc, the wire groove of the small wheel disc and the wire groove of the adjustable tension rod.

2. The electric vehicle seat back swing and impact adjustable tension rod durability test bench as claimed in claim 1, characterized in that: A servo motor reducer is arranged on the side of the large wheel disc, and the output shaft of the servo motor reducer is connected to the normally open electromagnetic clutch, the central axis of the large wheel disc and the pressure test frame axis in sequence, which can drive the large wheel disc and the pressure test frame axis to rotate; the normally open electromagnetic clutch is connected to the servo motor.

3. The electric vehicle seat back swing and impact adjustable tension rod durability test bench as claimed in claim 1, characterized in that: The upper surface of the seat moving platform is provided with an auxiliary seat slide rail fixing block for fixing the car seat and can move along the auxiliary seat slide rail; the two ends of the auxiliary seat slide rail are respectively the seat quick installation and removal position and the car seat test position.

4. The electric vehicle seat back swing and impact adjustable tension rod durability test bench as claimed in claim 1, characterized in that: The upper surface of the seat moving platform is also provided with a seat back pressure basin to support the seat back during testing.

5. The electric vehicle seat back swing and impact adjustable tension rod durability test bench as claimed in claim 1, characterized in that: A rack is also fixed on the slide rail, and a pinion is arranged on the side of the tension rod counterweight mechanism, and the pinion is meshed with the rack.

6. The electric vehicle seat back swing and impact adjustable tension rod durability test bench as claimed in claim 5, characterized in that: The tension rod counterweight mechanism is provided with a weight-type tension rod counterweight body and a servo motor worm gear reducer, and the worm output shaft of the servo motor worm gear reducer is connected to the pinion gear.

7. The electric vehicle seat back swing and impact adjustable tension rod durability test bench as claimed in claim 1, characterized in that: The pressure test frame is provided with a piezoelectric pressure sensor and a pressure contact position sensor.

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