Automobile safety belt lock catch durability test equipment

Abstract

The utility model relates to the technical field of hardware fatigue testing, in particular to an automobile safety belt lock catch durability testing device which comprises a testing table and further comprises a plurality of first clamping pieces which are connected to the table top of the testing table in a sliding mode, distributed in the linear direction of the table top of the testing table and used for clamping belt buckles. The second clamping pieces are in one-to-one correspondence with the first clamping pieces, are fixed on the table surface of the test table and are used for clamping mortise locks; the shielding plate is vertically arranged and connected between the first clamping piece and the second clamping piece in a sliding mode, a plugging port is formed in the position, close to the second clamping piece, of the center of the shielding plate, and the plugging port, the belt buckle in the first clamping piece and the mortise lock in the second clamping piece are distributed on a straight line; and the pushing piece is arranged on the shielding plate and is used for pushing a release buckle on the mortise lock. The automobile safety belt testing device has the effect of improving the testing efficiency of the automobile safety belt.

Description

Technical Field

[0001] The present application relates to the technical field of hardware fatigue testing, and in particular to a vehicle seat belt buckle durability testing device. Background Art

[0002] The lock of the car seat belt consists of a latch and a buckle. The latch is fixed to one side of the seat, and the buckle slides on the seat belt. The driver pulls the seat belt to insert the buckle into the latch.

[0003] Durability testing of automotive seatbelt buckles ensures that automotive parts can maintain their functional integrity while meeting their technical and economic limits. This testing provides reliable data for automotive component research and design, helping to analyze failed samples and prevent malfunctions during driving. Durability testing ensures vehicle durability and improves product reliability. Testing standards, such as Q / Sqr.04.139-2007, stipulate that buckles must withstand repeated operation. Before undergoing the required dynamic testing, the latch must undergo 30,000 opening and closing cycles under normal operating conditions.

[0004] During the test, the latch should withstand the load at room temperature until the force reaches the "stop" position. In order to conduct these tests, there are various automotive seat belt latch durability test devices on the market. These devices usually include a buckle clamp, a lock tongue clamp, a power element, a transmission mechanism and a control system, etc., which can realize the automation of the lock opening and locking action, improving the test efficiency and accuracy.

[0005] Regarding the above-mentioned related technologies, due to the limitations of the opening and closing and push-pull test methods, a single measurement cycle is long and the test efficiency is low. Utility Model Content

[0006] In order to improve the testing efficiency of automobile safety belts, the present invention provides an automobile safety belt buckle durability testing device.

[0007] The present invention provides a vehicle seat belt buckle durability testing device that adopts the following technical solutions:

[0008] An automobile seat belt buckle durability testing device includes a test bench, characterized in that it also includes:

[0009] A first clamping member is slidably connected to the test table surface, and a plurality of first clamping members are distributed in a straight line on the test table surface, and are used to clamp the buckle;

[0010] a second clamping member, corresponding one-to-one to the first clamping member, provided on the test bench surface and used for clamping the latch;

[0011] A shielding plate is vertically arranged and slidably connected between the first clamping member and the second clamping member, and is close to the second clamping member. A plug-in port is formed in the center of the shielding plate. The plug-in port, the buckle in the first clamping member, and the latch in the second clamping member are arranged in a straight line.

[0012] The pushing member is arranged on the shielding plate and is used for pushing the latch to release the buckle.

[0013] By adopting the above technical solution, the test bench is the main test structure for the durability test of the automobile seat belt buckle, wherein the first clamping member clamps the buckle, and the second clamping member clamps the latch. The first clamping member conveys the buckle to the second clamping member along the test bench surface until one end of the buckle's lock tongue is inserted into the lock hole of the latch. After the seat belt is inserted, the first clamping member is conveyed in the reverse direction to apply a force in the reverse direction, that is, the removal direction, to the seat belt buckle. Under normal circumstances, for qualified products, the seat belt buckle cannot be removed. After applying the removal force for a preset period of time, the pushing member pushes the buckle to be released, cooperating with the sliding operation of the first clamping member to remove the buckle from the latch, completing a single test.

[0014] During the safety belt durability test, to ensure the clamping stability of the second clamping member, a shielding plate was installed between the first and second clamping members. The shielding plate had an insertion port smaller than the diameter of the latch, which applied a horizontal obstruction to prevent the latch from detaching from the second clamping member.

[0015] To improve test efficiency, the test bench is equipped with multiple sets of seat belt durability test components, each set including a first clamping member, a shielding plate, a second clamping member, and a pushing member, and multiple sets of measurements are performed simultaneously.

[0016] Optionally, the first clamping member includes:

[0017] A first clamping cylinder, with a vertical clamping direction, and clamping blocks formed horizontally on two piston rods of the first clamping cylinder, wherein the area of the clamping blocks is larger than the area of the buckle;

[0018] The tooth block is formed on one of the clamping blocks.

[0019] By adopting the above technical solution, the first clamping cylinder clamps the belt buckle to achieve feeding and retracting of the belt buckle.

[0020] Optionally, the second clamping member includes:

[0021] A fixing block is provided on the test bench, wherein the top and side surfaces of the fixing block are flush with the plug interface;

[0022] The second driving cylinder is vertically arranged, and the cylinder body is fixed above the fixed block. The end of the piston rod of the second driving cylinder is formed with a clamping block, and the clamping block and the fixed block are flush with each other on a side close to the baffle.

[0023] By adopting the above technical solution, the fixed block should be set close to the shielding plate. When the second clamping member is clamped, one end of the latch abuts the shielding plate. The second driving cylinder is set vertically. The latch is kept clamped during the test.

[0024] In actual application, slots suitable for latches should be provided on the fixing block and the clamping block.

[0025] Optionally, the test bench is provided with a distance adjustment component for adjusting the distance between the fixed block and the shielding plate.

[0026] By adopting the above technical solution, different types of latches have different structures. For latches with different signals, the distance between the fixed block and the shielding plate can be appropriately adjusted so that the shielding plate can effectively shield the latch.

[0027] Optionally, a slide rail is laid on the test bench corresponding to the shielding plate, and a slider corresponding to the slide rail is provided at the bottom of the test bench, and the slider is slidably connected to the slide rail.

[0028] By adopting the above technical solution, the shielding plate slides horizontally on the test bench and slides perpendicular to the conveying direction of the first clamping member. When the test of a car seat belt buckle is completed, the tester slides the shielding plate to cancel the obstruction of the latch and allows the tester to remove the latch.

[0029] Optionally, the pushing member includes:

[0030] The rotating frame is vertically arranged and rotatably connected to the shielding plate surface. A push rod is horizontally arranged on the edge of the rotating frame. The push rod rotates with the rotating frame and rotates to a height flush with the plug interface.

[0031] By adopting the above technical solution, during the rotation of the rotating frame, the push rod is aligned with the plug interface as the rotating frame rotates, or more accurately, aligned with the release. The push rod uses a micro electric push rod. While aligning, the piston rod of the push rod extends toward the release. Press the release button to unfasten the safety belt and complete a single opening and closing test.

[0032] Optionally, the rotating frame rotates intermittently.

[0033] By adopting the above technical solution, the rotating frame rotates indirectly periodically, and the rotating frame stops rotating when the push rod extends out of the piston rod, thereby avoiding wear of the release surface caused by the push rod extending out of the piston rod and rotating at the same time, which in turn causes failure of pressing in the later stage of the test cycle.

[0034] Optionally, a display component is provided on the test bench surface.

[0035] By adopting the above technical solution, the display component displays the applied force of the first clamping member, the clamping force of the second clamping member, and test information such as the number of cycle tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0037] Figure 2 It is a structural diagram used to highlight the test components in the embodiment of the present application.

[0038] Figure 3 It is a structural diagram designed to highlight the shielding plate in the embodiment of the present application.

[0039] Figure 4 This is a structural diagram used to highlight the second clamping member in the embodiment of the present application.

[0040] Explanation of the accompanying drawings: 1. Test bench; 11. Display assembly; 2. First clamping member; 21. Pad; 22. First clamping cylinder; 3. Shielding plate; 31. Rotating frame; 32. Micro electric push rod; 33. Plug interface; 4. Second clamping member; 41. Clamping block; 42. Second drive cylinder; 43. Fixed block. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-4 This application is described in further detail.

[0042] The embodiment of the present application discloses a vehicle seat belt buckle durability testing device. Figure 1 A vehicle seat belt buckle durability tester includes a test bench 1, a display assembly 11 disposed on one side of the test bench 1, and a connecting cable integrated within the test bench 1. The connecting cable connects to the test assembly on the test equipment, and the display assembly 11 displays test information on the test assembly. Specifically, the display assembly 11 includes a display screen and a key module. The display screen displays test data, and the key module is used by the tester to control the device components.

[0043] Reference Figure 1 and Figure 2 , multiple groups of test components are evenly distributed on the test bench 1 along the length direction of the test bench 1. The multiple groups of test components have the same structure, and one group is used as an example; the test components include a first clamping member 2, a baffle 3, and a second clamping member 4.

[0044] Reference Figure 2The first clamping member 2 includes a pad 21 that is slidably connected to the test bench 1. A horizontally mounted first clamping cylinder 22 is fixedly mounted on the pad 21. The first clamping cylinder 22 has two vertically positioned jaws that hold the buckle. The buckle remains horizontally held by the first clamping cylinder 22. A chute is defined in the test bench 1 corresponding to the pad 21. A slider is slidably connected within the chute. The slider is fixedly mounted to the pad 21, driving the belt, which in turn drives the first clamping cylinder 22 to slide horizontally. The chute is oriented toward the second clamping member 4, allowing the first clamping cylinder 22 to feed the buckle toward the second clamping member 4.

[0045] Reference Figure 2 and Figure 3 The shielding plate 3 is vertically arranged between the first clamping member 2 and the second clamping member 4. The surface of the shielding plate 3 is perpendicular to the feed direction of the first clamping cylinder 22. The bottom edge of the shielding plate 3 is slidably connected to the test bench 1. A sliding groove adapted for the shielding plate 3 is horizontally opened on the test bench 1 and parallel to the surface of the shielding plate 3. A slider is slidably connected in the sliding groove. The slider is fixed to the bottom side of the shielding plate 3 and slidably connected to the sliding groove, driving the shielding plate 3 to slide along the sliding groove. The middle part of the shielding plate 3 surface is opened with an insertion port 33, and the shielding plate 3 is inserted into the insertion port 33.

[0046] Reference Figure 3 A rotating frame 31 is vertically mounted above the plug-in port 33 of the shielding plate 3. This frame is located on a side of the shielding plate 3 near the first clamping cylinder 22. It consists of multiple rotating rods of equal length, connected at the same end. These rotating rods are evenly spaced around the circumference, so that their other common endpoints are connected to form a regular polygon. Each end of each rotating rod is fixed to a horizontally mounted miniature electric push rod 32, with its piston rod facing the second clamping member 4. The central portion of the rotating frame 31 serves as the connecting end for the multiple rotating rods. A stepper motor is fixed to the side of the shielding plate 3 near the second clamping member 4, corresponding to the rotating frame 31, to drive the rotating frame 31.

[0047] Reference Figure 2 and Figure 4 The second clamping member 4 includes a pad 21, and a fixed block 43 is fixedly connected to the top side of the pad 21; a support frame is fixed to one side of the top surface of the test bench 1, one end of the support frame extends above the fixed block 43, and is fixedly connected to a vertically arranged second driving cylinder 42, and the piston rod of the second driving cylinder 42 passes through the support frame downward, and a clamping block 41 is fixedly connected below the support frame and above the fixed block 43, thereby, the piston rod of the second driving cylinder 42 is extended and retracted, driving the clamping block 41 to slide vertically; the clamping block 41 is arranged directly above the fixed block 43, and the bottom side area of the clamping block 41 is equal to the top side area of the fixed block 43, and grooves for fitting the latch are opened on the opposite sides of the two for fixing the latch.

[0048] Reference Figure 2and Figure 3 The rotating frame 31 rotates intermittently and periodically. As the rotating frame 31 rotates, one of the micro electric push rods 32 rotates to the lowest point, and its height is flush with the plug interface 33, flush with the unlocking height of the lock clamped by the fixing block 43 and the clamping block 41, and higher than the belt buckle clamped by the first clamping cylinder 22. The piston rod of the micro electric push rod 32 is facing the unlocking of the lock, pushing the unlocking to unfasten the safety belt.

[0049] In this embodiment, a lead screw through which a slider is passed can be provided in the slide groove on the test bench 1 , and the slider is driven to slide by the lead screw transmission of the motor. The lead screw transmission is a common transmission method and will not be described in detail.

[0050] The implementation principle of the vehicle seat belt buckle durability testing device in the embodiment of the present application is as follows:

[0051] The tester slides the shielding plate 3 to remove the shielding of the latch, installs the latch, and places the unlocked end of the latch toward the shielding plate 3 , and adjusts the spacing of the fixing blocks 43 .

[0052] The tester installs the buckle.

[0053] The first clamping cylinder 22 clamps the belt buckle, and the clamping block 41 and the fixed block 43 clamp the latch. The first clamping cylinder 22 transports the belt buckle along the test bench 1 to the fixed block 43 until one end of the lock tongue of the belt buckle is plugged into the plug interface 33 and then into the lock hole of the latch. After the seat belt is plugged in, the first clamping cylinder 22 transports it in the reverse direction to apply a force in the reverse direction of removal to the seat belt buckle. Under normal circumstances, for qualified products, the seat belt buckle cannot be removed. After applying the removal force for a preset period of time, the rotating frame 31 drives the micro electric push rod 32 to push the buckle to be unbuckled, and cooperates with the sliding operation of the first clamping member 2 to remove the belt buckle from the latch, completing a single test.

[0054] Repeat the test until a single seat belt buckle has completed multiple times, typically 30,000 times.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A vehicle safety belt buckle durability test device, comprising a test bench (1), characterized in that: Also includes: A first clamping member (2) is slidably connected to the surface of the test bench (1), and is distributed in a plurality of pieces in a straight line on the surface of the test bench (1) for clamping a belt buckle; A second clamping member (4), corresponding one-to-one to the first clamping member (2), is arranged on the surface of the test bench (1) and is used to clamp the latch; The shielding plate (3) is vertically arranged and slidably connected between the first clamping member (2) and the second clamping member (4), and is close to the second clamping member (4). The center portion of the shielding plate (3) is provided with an insertion port (33), and the insertion port (33), the buckle in the first clamping member (2), and the latch in the second clamping member (4) are distributed in a straight line. A pushing member is provided on the shielding plate (3) and is used for pushing the latch to release the buckle.

2. The vehicle seat belt buckle durability testing device according to claim 1, characterized in that: The first clamping member (2) comprises: A first clamping cylinder (22) with a vertical clamping direction, and clamping blocks (41) are horizontally formed on the two piston rods of the first clamping cylinder (22), and the area of the clamping blocks (41) is larger than the area of the buckle; The tooth block is formed on one of the clamping blocks (41).

3. The vehicle seat belt buckle durability testing device according to claim 1, characterized in that: The second clamping member (4) comprises: A fixing block (43) is arranged on the test bench (1), and the top side of the fixing block (43) is flush with the plug-in port (33); The second driving cylinder (42) is vertically arranged, and the cylinder body is fixed above the fixing block (43). The end of the piston rod of the second driving cylinder (42) is formed with a clamping block (41), and the clamping block (41) and the fixing block (43) are flush with one side close to the shielding plate (3).

4. The vehicle seat belt buckle durability testing device according to claim 3, characterized in that: The test bench (1) is provided with a distance adjustment component for adjusting the distance between the fixed block (43) and the shielding plate (3).

5. The vehicle seat belt buckle durability testing device according to claim 1, characterized in that: A slide rail is laid on the test bench (1) corresponding to the shielding plate (3), and a slider corresponding to the slide rail is provided at the bottom end of the test bench (1), and the slider is slidably connected to the slide rail.

6. The vehicle seat belt buckle durability testing device according to claim 1, characterized in that: The pushing member includes: The rotating frame (31) is vertically arranged and rotatably connected to the surface of the shielding plate (3). A push rod is horizontally arranged on the edge of the rotating frame (31). The push rod rotates with the rotating frame (31) and rotates to a height that is flush with the plug interface (33).

7. The vehicle seat belt buckle durability testing device according to claim 6, characterized in that: The rotating frame (31) rotates in an intermittent manner.

8. The vehicle seat belt buckle durability testing device according to claim 1, characterized in that: A display component (11) is provided on the surface of the test bench (1).

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