A fixture for testing car seats

Abstract

This utility model relates to the field of automotive parts testing fixture technology, specifically a fixed fixture for testing automotive seats. It includes a testing plate, with vehicle testing quick-connect structures at each of the four corners of the top of the testing plate. Each vehicle testing quick-connect structure includes a shaft, with multiple locking blocks slidably arranged at equal intervals on the top of the shaft. These locking blocks are all slidably assembled along a straight line. The testing plate is equipped with an adjustment device for adjusting the position of the shaft, and the adjustment device has an adjustment structure for adjusting the height of the shaft. A linkage structure is located at the center of the shaft to control the synchronous convergence or dispersion of the multiple locking blocks. The vehicle testing quick-connect structure enables rapid clamping of the seat slide rail. When the workpiece is pressed down, the inclined surfaces of the locking blocks cause them to passively converge and retract. After reaching their positions, the locking blocks disperse and open to complete the positioning and locking. A drive structure synchronously drives four sets of linkage structures, achieving synchronous convergence or dispersion of the locking blocks at four points, resulting in uniform clamping force.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing tooling technology, and in particular to a fixed tooling for testing automotive seats. Background Technology

[0002] Before leaving the factory, car seats need to undergo multiple performance tests using testing fixtures. As an important load-bearing component of the seat, the accuracy of the seat slide rail's clamping and positioning directly affects the accuracy of the test results.

[0003] Currently, the main types of workpiece clamping and fixing methods for automotive seat testing fixtures on the market are bolt and nut locking and fixing, and cylinder or hydraulic cylinder driven clamping plate clamping and fixing.

[0004] A fixing fixture for inspecting automobile seats is disclosed in Chinese patent CN218349796U. The fixing fixture for inspecting automobile seats includes an inspection plate, and a clamping structure is provided on the upper surface of the inspection plate. When it is necessary to inspect the produced automobile seats, the automobile seats to be inspected are placed on the inspection plate, and then the clamping structure on the inspection plate is used to clamp the automobile seats already placed on the inspection plate, thereby completing the limitation of the automobile seats.

[0005] However, according to the fixed fixtures for automotive seat inspection provided by relevant fields and existing equipment, fixtures that use bolts and nuts for locking and fixing require operators to tighten and loosen multiple bolts one by one during clamping, making the workpiece loading and unloading process cumbersome and time-consuming for component replacement and inspection. Fixtures that use cylinders or hydraulic cylinders to drive clamping plates to hold and fix the workpiece to be inspected rely on the clamping plates to clamp from the outside of the workpiece. During the clamping process, the clamping force is not easy to control, which can easily cause the seat slide rail to be squeezed and deformed, introducing inspection errors. Moreover, when multiple sets of clamping plates are driven by different cylinders or hydraulic cylinders, it is difficult to achieve multi-point synchronous clamping, which can easily lead to uneven force on the workpiece, resulting in displacement and warping, further reducing positioning accuracy. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a fixed tooling for testing automobile seats.

[0007] The objective of this utility model is achieved through the following technical solution: a fixed fixture for testing automotive seats, comprising a testing plate, wherein vehicle testing quick-connect structures are provided at the four corners of the top of the testing plate, each vehicle testing quick-connect structure comprising a shaft, wherein multiple locking blocks are slidably arranged at equal intervals on the top of the shaft, and the multiple locking blocks are slidably assembled along a straight line, wherein the testing plate is provided with an adjustment device for adjusting the position of the shaft, and the adjustment device is provided with an adjustment structure for adjusting the height of the shaft; wherein a linkage structure for controlling the multiple locking blocks to synchronously converge or disperse is provided at the center of the shaft, and a drive structure for controlling the synchronous operation of the four linkage structures is provided at the bottom of the testing plate.

[0008] Preferably, the bottom of the locking block is fixedly provided with a slider, the cross-sectional shape of the slider is T-shaped, the top of the shaft is provided with a groove that matches the slider, the cross-sectional shape of the locking block is triangular, and the inclined surface of the locking block faces the outside of the shaft.

[0009] Preferably, the linkage structure includes a rotating shaft rotatably disposed at the center of the shaft body, a connecting rod hinged between the top end of the rotating shaft and the top end of the slider, and an elastic structure at the bottom of the shaft body for assisting the rotating shaft to return to its original position after twisting.

[0010] Preferably, the two ends of the connecting rod are respectively hinged to the rotating shaft and the slider by two pins. The elastic structure includes a rotating groove formed at the bottom end of the shaft body. A fixed baffle is fixedly provided inside the rotating groove. A movable baffle is fixedly provided inside the rotating shaft located in the rotating groove. An elastic element is fixedly installed between the movable baffle and the fixed baffle.

[0011] Preferably, the drive structure includes a transmission wheel fixedly installed at the bottom end of the rotating shaft, and four transmission wheels are connected by a transmission belt. The bottom of the detection plate is provided with a drive component for controlling the rotation of one of the rotating shafts.

[0012] Preferably, the driving component is a knob fixedly installed at the bottom end of one of the rotating shafts, and the elastic component is a spring.

[0013] Preferably, the detection plate has mounting slots at all four corners, and the adjustment device includes an electric push rod fixedly installed inside the mounting slot. The output end of the electric push rod is fixedly installed with a mounting base. The mounting base has an L-shaped cross-section, and the shaft slides vertically with the mounting base.

[0014] Preferably, the adjustment structure includes an ear plate fixedly disposed at the bottom end of the shaft, the ear plate being threadedly connected to a lead screw, the lead screw passing through the ear plate, the top end of the lead screw being rotatably connected to the mounting base, and the bottom end of the lead screw being provided with an internal hexagonal socket.

[0015] The beneficial effects of this fixed fixture for automotive seat testing are as follows: the quick-connect structure for vehicle testing enables rapid clamping of the seat slide rail; when the workpiece is pressed down, the inclined surface of the locking block causes the locking block to passively converge and retract; after reaching the correct position, the locking block disperses and opens to complete the positioning and locking; the drive structure synchronously drives four sets of linkage structures to achieve synchronous convergence or dispersion of the locking blocks at four points, ensuring uniform clamping force and guaranteeing the accuracy of testing and positioning; and it eliminates the need for cumbersome bolt tightening and disassembly operations, significantly shortening the clamping and unloading time of the seat slide rail on the testing plate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the drive structure of this utility model; Figure 3 This is a schematic diagram of the adjustment structure and adjustment device of this utility model; Figure 4 This is a schematic diagram showing the state of the shaft after height adjustment of this utility model; Figure 5 This is a schematic diagram showing the state of multiple locking blocks after they are synchronously dispersed according to this utility model; Figure 6 This is a schematic diagram showing the state after multiple locking blocks of this utility model have converged synchronously; Figure 7 This is a schematic diagram of the elastic structure of this utility model.

[0018] In the diagram: 1. Detection plate; 11. Mounting slot; 2. Vehicle test quick-connect structure; 21. Shaft; 22. Locking block; 23. Slider; 24. Slide groove; 3. Adjustment device; 31. Electric push rod; 32. Mounting base; 4. Adjustment structure; 41. Ear plate; 42. Lead screw; 5. Linkage structure; 51. Rotating shaft; 52. Connecting rod; 6. Drive structure; 61. Transmission wheel; 62. Transmission belt; 63. Drive component; 7. Elastic structure; 71. Rotating groove; 72. Fixed baffle; 73. Movable baffle; 74. Elastic component. Detailed Implementation

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0021] like Figures 1 to 7 As shown, a fixed fixture for testing automotive seats includes a testing plate 1. Vehicle testing quick-connect structures 2 are provided at the four corners of the top of the testing plate 1. Each vehicle testing quick-connect structure 2 includes a shaft 21. Multiple locking blocks 22 are slidably arranged at equal intervals on the top of the shaft 21. The locking blocks 22 are all slidably assembled along a straight line. The testing plate 1 is provided with an adjustment device 3 for adjusting the position of the shaft 21. The adjustment device 3 is provided with an adjustment structure 4 for adjusting the height of the shaft 21. A linkage structure 5 is provided at the center of the shaft 21 for controlling the synchronous convergence or dispersion of the multiple locking blocks 22. The bottom of the detection plate 1 is equipped with a drive structure 6 for controlling the synchronous operation of four linkage structures 5. The locking blocks 22 at the top of the shaft 21 move from gathering to dispersing to achieve docking and locking with the mounting holes of the seat slide rail. When docking, the locking blocks 22 can gather to facilitate insertion into the mounting holes. After insertion, the locking blocks 22 disperse and open, forming a locking position on the outer side of the locking blocks 22, directly positioning and locking the seat slide rail. There is no need for cumbersome bolt tightening and disassembly operations, which greatly shortens the clamping and unloading time of the seat slide rail on the detection plate 1, and is suitable for the application scenario of quick part change inspection of automotive seat tooling.

[0022] like Figure 1 , Figure 5 and Figure 6As shown, a slider 23 is fixedly provided at the bottom of the locking block 22. The cross-sectional shape of the slider 23 is T-shaped. A groove 24 adapted to the slider 23 is provided at the top of the shaft 21. The cross-sectional shape of the locking block 22 is triangular, and the inclined surface of the locking block 22 faces the outside of the shaft 21. The slider 23 at the bottom of the locking block 22 cooperates with the groove 24 at the top of the shaft 21 to guide and limit the linear sliding of the locking block 22, restricting the degree of freedom of movement of the locking block 22, ensuring that the locking block 22 only slides together and disperses along the preset straight line direction, and the sliding process is not prone to deviation or jamming. The locking block 22 adopts a triangular cross-section with the inclined surface facing outward. When the workpiece is pressed down and connected, the wall of the mounting hole squeezes the inclined surface of the locking block 22, which can passively drive multiple locking blocks 22 to converge inward, realize automatic retraction, facilitate the direct pressing of the workpiece into place, and simplify the connection operation. After locking, the outer side of the locking block 22 forms a stop limit, which is reliable and not easy to loosen.

[0023] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the linkage structure 5 includes a rotating shaft 51 rotatably disposed at the center of the shaft 21. A connecting rod 52 is hinged between the top end of the rotating shaft 51 and the top end of the slider 23. A spring structure 7 for assisting the rotating shaft 51 to return to its original position after twisting is provided at the bottom of the shaft 21. The two ends of the connecting rod 52 are respectively hinged to the rotating shaft 51 and the slider 23 by two pins. The spring structure 7 includes a rotating groove 71 opened at the bottom end of the shaft 21. A fixed baffle 72 is fixedly provided inside the rotating groove 71. A movable baffle 73 is fixedly provided inside the rotating shaft 51 located in the rotating groove 71. An elastic element 74 is fixedly installed between the movable baffle 73 and the fixed baffle 72. The drive structure 6 includes a transmission wheel 61 fixedly installed at the bottom end of the rotating shaft 51. Four transmission wheels 61 are connected by a transmission belt 62 (the transmission wheels 61 and the transmission belt 62 can be configured as sprocket and chain drive, or as trapezoidal tooth synchronous pulley and trapezoidal tooth synchronous belt drive). The bottom of the detection plate 1 is provided with a control mechanism. A drive component 63 is configured to rotate one of the rotating shafts 51. The drive component 63 is a knob fixedly installed at the bottom of one of the rotating shafts 51, and the elastic component 74 is a spring. The drive structure 6 at the bottom of the detection plate 1 can synchronously control the linkage structure 5 inside the four vehicle test quick-connect structures 2 to operate synchronously, so that the four sets of locking blocks 22 can synchronously complete the action of gathering and unlocking or dispersing and locking. The synchronous action of the four points makes the force on the seat slide rail even, avoids the offset and warping problems caused by single-point locking, ensures the stability of the seat slide rail after clamping, reduces the interference of clamping errors on subsequent test results, and improves the reliability of the test. The drive structure 6 can be selected to be manually controlled or electrically controlled. The drive structure 6 drives the four sets of linkage structures 5 in a unified manner, so that the locking blocks 22 can be synchronously gathered to complete the unlocking, realizing the rapid disassembly of the workpiece. It can meet the manual operation needs of small batch testing, or be connected to the automated testing production line to achieve electric automated control, making it flexible in application scenarios.

[0024] like Figures 1 to 5 As shown, the detection plate 1 has mounting slots 11 at each of its four corners. The adjustment device 3 includes an electric push rod 31 fixedly installed inside the mounting slot 11. The output end of the electric push rod 31 is fixedly installed with a mounting base 32. The mounting base 32 has an L-shaped cross-section. The shaft 21 and the mounting base 32 slide vertically together. The adjustment structure 4 includes an ear plate 41 fixedly installed at the bottom end of the shaft 21. The ear plate 41 is threadedly connected to a lead screw 42, which passes through the ear plate 41. The top end of the lead screw 42 is rotatably connected to the mounting base 32, and the bottom end of the lead screw 42 is provided with an internal hexagonal socket. On the one hand, the adjustment device 3 can adjust the planar position of the shaft 21 on the detection plate 1, which can be adapted to the mounting hole positions of seat slide rails with different hole spacings. On the other hand, the adjustment structure 4 can adjust the height of the shaft 21 and the locking block 22, which can be adapted to seat slide rail workpieces of different thicknesses. One set of tooling can be compatible with the clamping and positioning of multiple models of seat slide rails, eliminating the need to process positioning tooling separately for each workpiece, thus reducing tooling development and manufacturing costs.

[0025] The work process is as follows: S1: When testing a car seat, the mounting holes of the seat slide rail can be directly connected to the vehicle test quick-connect structure 2 using the vehicle test quick-connect structure 2. Then, when multiple locking blocks 22 are subjected to force, they will converge synchronously and disperse synchronously after passing the mounting holes (locked state), thereby positioning the seat slide rail through multiple locking blocks 22. S2: After the inspection is completed, one of the rotating shafts 51 is controlled to rotate by the drive component 63. Then, the other rotating shafts 51 can be rotated synchronously by the transmission wheel 61 and the transmission belt 62. When the rotating shafts 51 rotate, multiple locking blocks 22 can be controlled to converge synchronously by the connecting rod 52, and then the car seat can be removed.

[0026] S3: At this time, the elastic element 74 is in a compressed state. After the drive element 63 is released, the elastic element 74 will cause the rotating shaft 51 to rotate in the opposite direction, so that multiple connecting rods 52 control multiple locking blocks 22 to disperse synchronously. S4: Using the set linkage structure 5 and drive structure 6, the linkage structure 5 can control multiple locking blocks 22 to synchronously gather or disperse, and the drive structure 6 can control multiple linkage structures 5 to operate synchronously, thereby facilitating the synchronous gathering (unlocked state) of multiple locking blocks 22, and making it easy to separate the seat slide rail from the vehicle test quick-connect structure 2. S5: The mounting base 32 can be slidable by the electric push rod 31, so that the position of the vehicle test quick-connect structure 2 can be adjusted according to the position of the seat slide rail mounting hole. The height of the shaft 21 and the locking block 22 can be adjusted by the lead screw 42, so that it can be adapted to seat slide rail workpieces of different thicknesses.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A fixture for inspecting automobile seats, characterized in that: The test plate (1) is provided with vehicle test quick-connect structure (2) at each of the four corners of the top of the test plate (1). The vehicle test quick-connect structure (2) includes a shaft (21). Multiple locking blocks (22) are slidably provided at equal intervals on the top of the shaft (21). The multiple locking blocks (22) are slidably assembled along a straight line. The test plate (1) is provided with an adjustment device (3) for adjusting the position of the shaft (21). The adjustment device (3) is provided with an adjustment structure (4) for adjusting the height of the shaft (21). The shaft (21) is provided with a linkage structure (5) at the center for controlling the synchronous convergence or synchronous dispersion of multiple locking blocks (22), and the bottom of the detection plate (1) is provided with a drive structure (6) for controlling the synchronous operation of the four linkage structures (5).

2. The fixing fixture for testing automobile seats according to claim 1, characterized in that: The bottom of the locking block (22) is fixedly provided with a slider (23), the cross-sectional shape of the slider (23) is T-shaped, the top of the shaft (21) is provided with a groove (24) that matches the slider (23), the cross-sectional shape of the locking block (22) is triangular, and the inclined surface of the locking block (22) faces the outside of the shaft (21).

3. The fixing fixture for testing automobile seats according to claim 2, characterized in that: The linkage structure (5) includes a rotating shaft (51) rotatably disposed at the center of the shaft (21), a connecting rod (52) is hinged between the top end of the rotating shaft (51) and the top end of the slider (23), and an elastic structure (7) is provided at the bottom of the shaft (21) to assist the rotating shaft (51) in resetting after being twisted.

4. The fixing fixture for testing automobile seats according to claim 3, characterized in that: The two ends of the connecting rod (52) are respectively hinged to the rotating shaft (51) and the slider (23) by two pins. The elastic structure (7) includes a rotating groove (71) opened at the bottom end of the shaft (21). A fixed baffle (72) is fixedly provided inside the rotating groove (71). A movable baffle (73) is fixedly provided inside the rotating shaft (51) located in the rotating groove (71). An elastic element (74) is fixedly installed between the movable baffle (73) and the fixed baffle (72).

5. The fixing fixture for testing automobile seats according to claim 4, characterized in that: The drive structure (6) includes a drive wheel (61) fixedly installed at the bottom of the rotating shaft (51). The four drive wheels (61) are connected by a drive belt (62). The bottom of the detection plate (1) is provided with a drive component (63) for controlling the rotation of one of the rotating shafts (51).

6. The fixing fixture for testing automobile seats according to claim 5, characterized in that: The driving element (63) is a knob fixedly installed at the bottom of one of the rotating shafts (51), and the elastic element (74) is a spring.

7. The fixing fixture for testing automobile seats according to claim 1, characterized in that: The detection plate (1) has mounting slots (11) at each of its four corners. The adjustment device (3) includes an electric push rod (31) fixedly installed inside the mounting slot (11). The output end of the electric push rod (31) is fixedly installed with a mounting base (32). The mounting base (32) has an L-shaped cross section. The shaft (21) slides vertically with the mounting base (32).

8. The fixing fixture for testing automobile seats according to claim 7, characterized in that: The adjustment structure (4) includes an ear plate (41) fixedly installed at the bottom end of the shaft (21). The ear plate (41) is threadedly connected to a lead screw (42). The lead screw (42) passes through the ear plate (41). The top end of the lead screw (42) is rotatably connected to the mounting base (32). The bottom end of the lead screw (42) is provided with an internal hexagonal socket.

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