Seat back plate impact testing machine

Abstract

The utility model discloses a seat back plate impact testing machine, which comprises a test bed, a seat mounting table, at least one guide rod, a guide sliding seat, an impact block and a lifting driving mechanism, and is characterized in that the seat mounting table is fixedly arranged on the test bed and is suitable for mounting a seat to be tested; the guide rod is vertically mounted on the test bed; the guide sliding seat is arranged on the guide rod in a sliding manner; the impact block is mounted on the guide sliding seat; and the lifting driving mechanism is suitable for driving the guide sliding seat to rise along the guide rod, so that the impact block freely falls under the action of gravity after driving is stopped, and a back plate of the seat to be tested is impacted. According to the utility model, an accurate and controllable impact test can be realized, and the test adaptability and the operation safety are improved.

Description

Technical Field

[0001] This utility model relates to an impact testing machine for seat back panels, belonging to the technical field of impact testing devices. Background Technology

[0002] As people's demands for safety and comfort increase, the safety of seats, as an important component of various means of transportation, offices, and homes, is receiving more and more attention. The seat backrest is a key structural component of the seat, needing to withstand various external impacts during use and provide sufficient support and protection. Therefore, conducting effective strength and durability tests on seat backrests is of great significance for ensuring safe use.

[0003] A search of existing technologies revealed a Chinese patent (CN105021366B) disclosing an automotive seat impact testing system. This patent utilizes an electronically controlled disk and a free-fall impact block for impact testing. The system includes a mounting bracket, an impact block, and a seat. The electronically controlled disk is raised and lowered via a main motor and a winding reel. When the electronically controlled disk is de-energized, the impact block is released for a free-fall impact. However, during use, it was found that after the impact block lands on the seat, it may detach from the descent path formed by the mounting bracket, posing a risk. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a seat back panel impact testing machine that can achieve precise and controllable impact testing, and improve testing adaptability and operational safety.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a seat back panel impact testing machine, comprising:

[0006] Test bench;

[0007] A seat mounting platform is fixedly mounted on the test bench frame and is suitable for mounting the seat to be tested.

[0008] At least one guide rod is vertically mounted on the test bench;

[0009] A guide slide, which is slidably mounted on the guide rod;

[0010] An impact block, which is mounted on the guide slide;

[0011] A lifting drive mechanism is provided, which is adapted to drive the guide slide to rise along the guide rod so that after the drive stops, the impact block falls freely under the action of gravity and impacts the back panel of the seat under test.

[0012] Furthermore, a specific structure of a lateral restraint mechanism is provided. The seat back panel impact testing machine also includes a lateral restraint mechanism, which comprises:

[0013] A support frame is mounted on the test bench.

[0014] A pair of telescopic drive sources, the pair of telescopic drive sources being respectively installed on both sides of the support frame;

[0015] A pair of lateral constraint abutment blocks are respectively connected to the telescopic ends of the corresponding telescopic drive source. The lateral constraint abutment blocks are adapted to move to both sides of the test seat by the drive of the telescopic drive source to laterally constrain the test seat.

[0016] Furthermore, a guide rail slider mechanism is provided between the support frame and the test bench;

[0017] The support frame is slidably mounted on the test bench via the guide rail slider mechanism.

[0018] Furthermore, the seat backrest impact testing machine also includes a front support plate, which is mounted on the test bench and is adapted to abut against the front end of the backrest of the seat under test to restrict the vertical movement of the front end of the seat under test.

[0019] Furthermore, a specific structure for a lifting drive mechanism is provided, the lifting drive mechanism comprising:

[0020] A fixing plate is fixedly mounted on the test bench.

[0021] A pulley is mounted on the guide slide.

[0022] The drive source is mounted on the fixed plate;

[0023] A drive rope, one end of which is fixed to the fixed plate, and the other end of which passes over the pulley and is connected to the drive source;

[0024] The drive source is adapted to drive the guide slide to move up and down along the guide rod via the drive rope.

[0025] Furthermore, a specific type of drive source is provided, wherein the drive source is a motor.

[0026] Furthermore, the seat back panel impact testing machine also includes a buffer spring, which is sleeved outside the guide rod and located below the guide slide.

[0027] Furthermore, the seat back panel impact testing machine also includes a test indicator light, which is mounted on the test bench.

[0028] By adopting the above technical solution, this utility model has the following beneficial effects:

[0029] In this invention, during operation, the test seat is first installed on the seat mounting platform. Then, a lifting drive mechanism moves the guide slide upwards along the guide rod, raising the impact block to a set height. The drive is then stopped, and the guide slide falls freely along the guide rod under gravity, causing the impact block to impact the seat backrest. The guide slide slides stably vertically under the constraint of the guide rod, ensuring the impact block maintains the predetermined impact direction and path. This ensures accuracy and repeatability during the impact process, improves the reliability of the test data and the applicability of the device, and ensures experimental safety.

[0030] In addition, the telescopic drive source and the lateral constraint abutment block constitute a lateral constraint mechanism, which can clamp and constrain the sides of the seat under test, effectively preventing the seat from moving laterally or tilting during the impact. A guide rail slider mechanism is provided between the support frame and the test bench, allowing the lateral constraint mechanism to slide and adjust in the horizontal direction to adapt to different seat specifications and improve clamping adaptability and versatility. The front support plate is installed on the test bench and can abut against the front end of the back panel of the seat under test, limiting its vertical displacement at the front end during the impact. Test indicator lights are installed on the test bench to display the test status in real time and improve operational safety.

[0031] In summary, this invention improves the stability and safety of the testing process and ensures repeatability during the impact process. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the seat back panel impact testing machine of this utility model. Figure 1 ;

[0033] Figure 2 This is a three-dimensional structural diagram of the seat back panel impact testing machine of this utility model. Figure 2 . Detailed Implementation

[0034] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0035] like Figure 1-2 As shown, a seat back panel impact testing machine includes:

[0036] Test bench 1;

[0037] Seat mounting platform 2 is fixedly set on test bench 1 and is suitable for mounting the seat to be tested.

[0038] Two guide rods 3 are vertically mounted on the test bench 1;

[0039] Guide slide 4 is slidably mounted on guide rod 3;

[0040] Impact block 5 is mounted on guide slide 4;

[0041] The lifting drive mechanism 6 is adapted to drive the guide slide 4 to rise along the guide rod 3 so that after the drive stops, the impact block 5 falls freely under the action of gravity and impacts the back panel of the seat to be tested.

[0042] In this embodiment, as Figure 1-2 As shown, during operation, the seat to be tested is first installed on the seat mounting platform 2. Then, the lifting drive mechanism 6 drives the guide slide 4 to move upward along the guide rod 3, causing the impact block 5 to rise to the set height. Then, the drive is stopped, and the guide slide falls freely along the guide rod under the action of gravity, causing the impact block to impact the back panel of the seat along a predetermined path, thus completing the impact test. This ensures the accuracy and repeatability of the impact process, improves the reliability of the test data and the applicability of the device, and ensures experimental safety.

[0043] Specifically, such as Figure 1-2 As shown, the seat back panel impact testing machine also includes a lateral restraint mechanism, which includes:

[0044] Support frame 71 is installed on test bench 1;

[0045] A pair of telescopic drive sources 72 are respectively installed on both sides of the support frame 71;

[0046] A pair of lateral constraint abutment blocks 73 are respectively connected to the telescopic ends of the corresponding telescopic drive source 72. The lateral constraint abutment blocks 73 are adapted to move to both sides of the test seat by the drive of the telescopic drive source 72 to laterally constrain the test seat.

[0047] Specifically, such as Figure 1-2 As shown, a guide rail slider mechanism 74 is provided between the support frame 71 and the test bench 1;

[0048] The support frame 71 is slidably mounted on the test bench 1 via the guide rail slider mechanism 74.

[0049] In this embodiment, as Figure 1-2As shown, the telescopic drive source 72 can be a cylinder, a hydraulic cylinder, or an electric screw. The shape of the lateral constraint abutment block 73 is adapted to the side profile of the seat under test. When the telescopic drive source 72 retracts inward, it drives the lateral constraint abutment block 73 to move towards the center line of the seat until it contacts the two sides of the seat and applies a preset constraint force.

[0050] The guide rail slider mechanism 74 includes a guide rail fixed to the test bench 1 and a slider mounted on the bottom of the support frame 71. The slider slides along the length of the guide rail, and the support frame 71 can move along the front-back direction of the test bench 1 to accommodate test seats of different sizes and models. In other embodiments, the number of telescopic drive sources 72 is not limited to one pair; multiple pairs of telescopic drive sources 72 can be set according to the specific size and constraint requirements of the test seat. Meanwhile, the lateral constraint abutment block 73 can be made of rubber.

[0051] Specifically, such as Figure 1 As shown, the seat back panel impact testing machine also includes a front support plate 8, which is mounted on the test bench 1. The front support plate 8 is adapted to abut against the front end of the back panel of the seat to be tested to limit the up and down movement of the front end of the seat to be tested.

[0052] In this embodiment, as Figure 1 As shown, the front support plate 8 is fixedly installed at the front end of the test bench 1. The upper surface of the front support plate 8 forms surface contact with the front end of the backrest of the seat under test. When the impact block 5 impacts the backrest of the seat, the front support plate 8 bears the downward force of the front end of the seat, preventing the seat from sinking or tilting forward during the impact. The height of the front support plate 8 can be adjusted by an adjustment mechanism to accommodate backrests of different thicknesses. The adjustment mechanism is a mounting plate fixed to the test bench 1. The mounting plate has multiple mounting holes spaced vertically. The front support plate 8 can be connected to the mounting holes on the mounting plate by fasteners passing through the front support plate 8. The front support plate 8 is made of metal and has a rubber pad on its upper surface. The fasteners include a threaded adjusting rod and a locking nut. The vertical position of the front support plate 8 can be changed by rotating the adjusting rod, and it is fixed by the locking nut after adjustment.

[0053] Specifically, such as Figure 1 As shown, the lifting drive mechanism 6 includes:

[0054] Fixing plate 61 is fixedly mounted on the test bench 1;

[0055] Pulley 62 is mounted on guide slide 4;

[0056] Drive source 63 is mounted on fixed plate 61;

[0057] The drive rope 64 has one end fixed to the fixed plate 61 and the other end passing over the pulley 62 and connected to the drive source 63.

[0058] The drive source 63 is adapted to drive the guide slide 4 to move up and down along the guide rod 3 via the drive rope 64.

[0059] Specifically, such as Figure 1 As shown, the drive source 63 is a motor.

[0060] In this embodiment, as Figure 1-2 As shown, pulley 62 is mounted on guide slide 4 via bearing housing. Drive rope 64 is made of steel wire rope, but can also be made of fiber rope. One end of the rope is fixed to a fixed point on fixed plate 61 by a clamp, and the other end is connected to the drum of drive source 63 after being guided by pulley 62. When the motor rotates forward, the drum winds up the rope, and the guide slide 4 moves upward along guide rod 3 through the action of pulley 62. When the motor stops rotating or reverses, guide slide 4 falls freely under the action of gravity, and drive rope 64 is released through pulley 62.

[0061] In other embodiments, the drive source 63 may also be a hydraulic motor or a pneumatic motor, or other devices capable of outputting rotational power. An auxiliary pulley is also provided on the fixed plate 61, and the other end of the drive rope 64 passes around the pulley 62 and the auxiliary pulley and is connected to the drive source 63.

[0062] Specifically, such as Figure 1 As shown, the seat back panel impact testing machine also includes a buffer spring 9, which is sleeved outside the guide rod 3 and located below the guide slide 4.

[0063] Specifically, such as Figure 2 As shown, the seat back panel impact testing machine also includes a test indicator light 10, which is mounted on the test bench 1.

[0064] In this embodiment, as Figure 1-2 As shown, when the guide slide 4 continues to move downward after completing the impact action, the buffer spring 9 is compressed, generating an upward elastic force to buffer and decelerate the guide slide 4. In addition, the buffer spring 9 can be equipped with a damper, which works in parallel with the spring to absorb the kinetic energy of the guide slide 4 through hydraulic damping or friction damping, preventing the guide slide 4 from rebounding under the action of the spring.

[0065] The test indicator light 10 is installed above the test bench 1. The test indicator light 10 has three sets of LED lights of different colors. Different colors represent different working states of the test equipment. For example, the green indicator light indicates that the equipment is in standby mode, the yellow indicator light indicates that the equipment is preparing for the test, and the red indicator light indicates that the equipment is performing an impact test.

[0066] In this embodiment, the test bench 1 is also equipped with an outer protective cover (not shown in the figure).

[0067] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seat back panel impact testing machine, characterized in that, include: Test bench (1); Seat mounting platform (2), the seat mounting platform (2) is fixedly installed on the test bench (1), and the seat mounting platform (2) is suitable for mounting the seat to be tested; At least one guide rod (3) is vertically mounted on the test bench (1); Guide slide (4), which is slidably mounted on the guide rod (3); Impact block (5), said impact block (5) is mounted on the guide slide (4); The lifting drive mechanism (6) is adapted to drive the guide slide (4) to rise along the guide rod (3) so that after the drive stops, the impact block (5) falls freely under the action of gravity and impacts the back panel of the seat to be tested.

2. The seat back panel impact testing machine according to claim 1, characterized in that, It also includes a lateral restraint mechanism, which comprises: A support frame (71) is mounted on the test bench (1); A pair of telescopic drive sources (72) are respectively installed on both sides of the support frame (71); A pair of lateral constraint abutment blocks (73) are respectively connected to the telescopic ends of the corresponding telescopic drive source (72). The lateral constraint abutment blocks (73) are adapted to move to both sides of the test seat by the drive of the telescopic drive source (72) to laterally constrain the test seat.

3. The seat back panel impact testing machine according to claim 2, characterized in that, A guide rail slider mechanism (74) is provided between the support frame (71) and the test bench (1); The support frame (71) is slidably mounted on the test bench (1) via the guide rail slider mechanism (74).

4. The seat back panel impact testing machine according to claim 1, characterized in that, It also includes a front support plate (8), which is mounted on the test bench (1) and is adapted to abut against the front end of the back panel of the seat under test to limit the up and down movement of the front end of the seat under test.

5. The seat back panel impact testing machine according to claim 1, characterized in that, The lifting drive mechanism (6) includes: A fixing plate (61) is fixedly mounted on the test bench (1); A pulley (62) is mounted on the guide slide (4); A drive source (63) is mounted on the fixed plate (61); A drive rope (64) is fixed at one end to the fixed plate (61) and at the other end passes around the pulley (62) and is connected to the drive source (63). The drive source (63) is adapted to drive the guide slide (4) to move up and down along the guide rod (3) via the drive rope (64).

6. The seat back panel impact testing machine according to claim 5, characterized in that, The driving source (63) is a motor.

7. The seat back panel impact testing machine according to claim 1, characterized in that, It also includes a buffer spring (9), which is sleeved outside the guide rod (3) and located below the guide slide (4).

8. The seat back panel impact testing machine according to claim 1, characterized in that, It also includes a test indicator light (10), which is mounted on the test bench (1).

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