Emergency locking simulation test device for automobile seat safety belt

Abstract

The invention discloses an automobile seat safety belt emergency locking simulation test device, which relates to the field of automobile safety detection and comprises a support frame, sliding tables are symmetrically and slidably connected to the top of the support frame, retractors are symmetrically arranged in one side of the top of the support frame, and to-be-tested safety belts are symmetrically arranged at the top of the support frame. One end of the to-be-tested safety belt is wound in the corresponding retractor, the other end of the to-be-tested safety belt is connected with the corresponding sliding table, and a guide shaft is rotationally connected to the interior of the other side of the top of the supporting frame. The intermittent lifting mechanism can be automatically and continuously circulated for multiple times in the test process without manual intervention, so that the test reliability is improved, the repeatability and comparability of each test result are ensured, the emergency locking performance of the safety belt can be evaluated more accurately through multiple tests, and the test efficiency is improved. Powerful support is provided for improving the product quality.

Description

Technical Field

[0001] The invention relates to the field of automobile safety detection, and in particular to an automobile seat belt emergency locking simulation test device. Background Art

[0002] As an important part of the vehicle's passive safety system, car seat belts require rigorous testing and evaluation to ensure that they can effectively protect the lives of passengers in emergency situations.

[0003] Many existing test devices have difficulty in accurately simulating the acceleration in real accidents when simulating emergency locking situations. This may lead to significant differences between the test results and actual usage, and it is impossible to accurately evaluate the emergency locking performance of the seat belt. During the test, if the device cannot accurately simulate the stress conditions of the seat belt in an emergency situation, then the test results will lack credibility. For example, if the device cannot simulate the tensile and compressive deformation of the seat belt in a high-speed collision, then the test data will not reflect the actual performance of the seat belt.

[0004] The emergency locking performance of a seat belt depends not only on its static performance, but is also closely related to its dynamic response. However, existing test devices often have deficiencies in simulating dynamic responses, resulting in test results that cannot accurately reflect the actual performance of the seat belt in an emergency. Summary of the invention

[0005] In order to make up for the deficiencies of the existing technical problems, the purpose of the present invention is to provide a car seat belt emergency locking simulation test device, which solves the following technical problems: how to accurately simulate the stress conditions and dynamic responses of the seat belts in emergency situations to accurately evaluate the emergency locking performance of the seat belts, and how to improve the degree of automation of the test to reduce the difficulty of operation.

[0006] In order to solve the problems of the prior art, the technical solution of the present invention is as follows:

[0007] A vehicle seat belt emergency locking simulation test device comprises a support frame, a slide table is symmetrically slidably connected to the top of the support frame, a retractor is symmetrically arranged inside one side of the top of the support frame, a seat belt to be tested is symmetrically arranged on the top of the support frame, one end of the seat belt to be tested is reeled in the corresponding retractor, and the other end of the seat belt to be tested is connected to the corresponding slide table, a guide shaft is rotatably connected inside the other side of the top of the support frame, guide wheels are symmetrically arranged on the outside of the guide shaft, a traction rope is arranged on one side of the slide table, one end of the traction rope is connected to the corresponding guide wheel, the other end of the traction rope passes through the support frame, bypasses the guide wheel and is fixedly connected to a counterweight block at the end, and an intermittent lifting mechanism is installed inside the support frame below the guide wheel.

[0008] Preferably, the intermittent lifting mechanism includes a rotating shaft, a winding wheel, a lifting rope and a rotating wheel. The interior of the support frame is rotatably connected to the rotating shaft below the guide shaft, the outer side of the rotating shaft is symmetrically rotatably connected to the winding wheel, a lifting rope is provided on the outer side of the winding wheel, one end of the lifting rope is fixedly connected to the winding wheel, and the other end of the lifting rope is fixedly connected to the corresponding counterweight block, the outer side of the rotating shaft is symmetrically rotatably connected to the rotating wheel, and one side of the rotating wheel is fixedly connected to the adjacent winding wheel.

[0009] Preferably, the intermittent lifting mechanism also includes: a rotating plate, a sleeve, a sliding rod and a clamping block. The rotating plate is fixedly connected to the outer side of the rotating shaft, the sleeve is fixedly connected to the outer side of the rotating plate, the two ends of the sleeve are respectively sleeved on the corresponding outer sides of the rotating wheel, the sliding rods are symmetrically slidably connected inside the two sides of the sleeve, the ends of the sliding rods close to the rotating wheel are fixedly connected to the clamping blocks, a groove is opened on the outer side of the rotating wheel, and the two clamping blocks on one side of the sleeve are respectively inserted into the corresponding grooves.

[0010] Preferably, a spring is sleeved on the outer side of the slide rod, and the clamping block is elastically connected to the inner wall of the sleeve through the spring, so that the clamping block can remain stable in the groove and can also be smoothly removed from the groove when needed.

[0011] Preferably, the intermittent lifting mechanism also includes: a connecting plate, a sliding block and an arc frame, connecting plates are provided on both sides of the sleeve, one end of the sliding rod is fixedly connected to the corresponding connecting plate, the side of the connecting plate away from the sleeve is fixedly connected to the sliding block, the interior of the support frame is located below the sleeve and is fixedly connected to the arc frame, a sliding groove is opened on the top of the arc frame, and the sliding block is slidably connected inside the corresponding sliding groove.

[0012] Preferably, the distance between the arc frame and the sleeve gradually increases, so that the slider can gradually change the position of the slide rod and the block during the sliding process, thereby realizing automatic unlocking and re-locking of the locking mechanism.

[0013] Preferably, a motor is installed on one side of the support frame, and the output end of the motor is fixedly connected to the end corresponding to the rotating shaft, providing a stable power source for the rotating shaft. The drive of the motor drives the rotating shaft to rotate, thereby driving the entire working process of the intermittent lifting mechanism.

[0014] Preferably, an annular groove is provided on the outer side of the winding wheel, which provides a stable winding path for the lifting rope, ensures the uniform distribution and stable winding of the lifting rope on the winding wheel, and avoids test errors caused by loose or uneven winding of the lifting rope.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. The present invention significantly improves the accuracy of the test by accurately simulating the tension of the passenger on the seat belt in an emergency situation and the dynamic response of the seat belt in this process. Through the natural falling of the counterweight and the precise control of the intermittent lifting mechanism, a variety of emergency braking or collision scenarios can be truly reproduced, ensuring the reliability and effectiveness of the test results.

[0017] 2. The present invention ensures the synchronous and stable rotation of the winding wheel and the rotating wheel through the cooperation of the rotating plate, sleeve, sliding rod and clamping block. This design allows the device to accurately control the retraction and release of the pulling rope and the lifting and lowering of the counterweight when simulating the stress of the safety belt, thereby improving the accuracy and stability of the test.

[0018] 3. The present invention uses the automatic unlocking and re-locking functions of the locking mechanism to enable the intermittent lifting mechanism to automatically and continuously perform multiple cycles during the test without human intervention. This not only improves the reliability of the test, but also ensures the repeatability and comparability of each test result. Through multiple tests, the emergency locking performance of the seat belt can be more accurately evaluated, providing strong support for the improvement of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the traction rope structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the rotating wheel structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the sleeve structure of the present invention.

[0023] Figure numerals: 1, support frame; 2, slide; 3, retractor; 4, safety belt to be tested; 5, guide shaft; 6, guide wheel; 7, traction rope; 8, counterweight; 9, intermittent lifting mechanism; 91, rotating shaft; 92, winding wheel; 921, annular groove; 93, pulling rope; 94, rotating wheel; 95, rotating plate; 96, sleeve; 97, sliding rod; 98, block; 99, spring; 910, connecting plate; 911, slider; 912, arc frame; 10, motor. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] The automobile seat belt emergency locking simulation test device comprises a support frame 1;

[0026] like Figure 1 As shown, a slide 2 is symmetrically and slidably connected to the top of the support frame 1, a reel 3 is symmetrically arranged inside one side of the top of the support frame 1, a safety belt 4 to be tested is symmetrically arranged on the top of the support frame 1, one end of the safety belt 4 to be tested is reeled in the corresponding reel 3, and the other end of the safety belt 4 to be tested is connected to the corresponding slide 2, a guide shaft 5 is rotatably connected inside the other side of the top of the support frame 1, and guide wheels 6 are symmetrically arranged on the outer side of the guide shaft 5, a traction rope 7 is arranged on one side of the slide 2, one end of the traction rope 7 is connected to the corresponding guide wheel 6, and the other end of the traction rope 7 passes through the support frame 1, bypasses the guide wheel 6, and is fixedly connected to a counterweight 8 at the end, and an intermittent lifting mechanism 9 is installed inside the support frame 1 below the guide wheel 6;

[0027] During operation, the counterweight 8 falls naturally and uses the traction rope 7 to pull the slide 2, thereby gradually pulling the seat belt 4 to be tested out of the retractor 3, simulating the pulling force of the passenger on the seat belt in an emergency situation. During this process, the guide shaft 5 and the guide wheel 6 ensure the smooth movement of the traction rope 7, and the intermittent lifting mechanism 9 is responsible for periodically lifting the counterweight 8 to adjust the tension of the traction rope 7 and simulate the stress conditions of the seat belt under different situations.

[0028] like Figure 1 As shown, the intermittent lifting mechanism 9 includes a rotating shaft 91, a winding wheel 92, a lifting rope 93 and a rotating wheel 94. The interior of the support frame 1 is located below the guide shaft 5 and is rotatably connected to the rotating shaft 91. The outer side of the rotating shaft 91 is symmetrically rotatably connected to the winding wheel 92. A lifting rope 93 is provided on the outer side of the winding wheel 92. One end of the lifting rope 93 is fixedly connected to the winding wheel 92, and the other end of the lifting rope 93 is fixedly connected to the corresponding counterweight block 8. The outer side of the rotating shaft 91 is symmetrically rotatably connected to the rotating wheel 94, and one side of the rotating wheel 94 is fixedly connected to the adjacent winding wheel 92.

[0029] The rotating wheel 94 is connected to the winding wheel 92 to ensure that the two rotate synchronously. During the rotation of the winding wheel 92, the pulling rope 93 can be reeled in, thereby lifting the counterweight block 8.

[0030] like Figure 1 As shown, the intermittent lifting mechanism 9 also includes: a rotating plate 95, a sleeve 96, a sliding rod 97 and a clamping block 98. The rotating plate 95 is fixedly connected to the outer side of the rotating shaft 91, and the sleeve 96 is fixedly connected to the outer side of the rotating plate 95. The two ends of the sleeve 96 are respectively sleeved on the outer side of the corresponding rotating wheel 94. The sliding rods 97 are symmetrically slidably connected inside the two sides of the sleeve 96. The ends of the sliding rods 97 close to the rotating wheel 94 are fixedly connected to the clamping blocks 98. The outer side of the rotating wheel 94 is provided with a groove, and the two clamping blocks 98 on one side of the sleeve 96 are respectively inserted into the corresponding grooves.

[0031] When the rotating shaft 91 rotates, the sleeve 96 rotates accordingly, and the block 98 thereon is inserted into the groove of the rotating wheel 94 to achieve a fixed connection between the two, ensuring that the winding wheel 92 and the rotating wheel 94 can rotate synchronously and stably with the sleeve 96, thereby accurately controlling the retraction and extension of the pulling rope 93 and the lifting and lowering of the counterweight block 8.

[0032] like Figure 1 As shown, a spring 99 is sleeved on the outside of the slide bar 97, and the clamping block 98 is elastically connected to the inner wall of the sleeve 96 through the spring 99, so that the clamping block 98 can remain stable in the groove and can also be smoothly removed from the groove when needed.

[0033] like Figure 1 As shown, the intermittent lifting mechanism 9 also includes: a connecting piece 910, a slider 911 and an arc frame 912. Connecting pieces 910 are provided on both sides of the sleeve 96. One end of the slide rod 97 is fixedly connected to the corresponding connecting piece 910. The side of the connecting piece 910 away from the sleeve 96 is fixedly connected with a slider 911. The interior of the support frame 1 is located below the sleeve 96 and is fixedly connected with an arc frame 912. A slide groove is provided on the top of the arc frame 912, and the slider 911 is slidably connected inside the corresponding slide groove.

[0034] As the sleeve 96 rotates, the slider 911 slides in the slide groove of the arc frame 912, gradually changing the positions of the slide rod 97 and the block 98. When the slider 911 slides to the end of the arc frame 912, the block 98 pops out from the groove of the rotating wheel 94 to achieve automatic unlocking. Subsequently, as the rotating wheel 94 continues to rotate, the block 98 on the other side is inserted into the groove again to complete re-locking.

[0035] like Figure 1 As shown, the distance between the arc frame 912 and the sleeve 96 gradually increases, so that the slider 911 can gradually change the positions of the slide rod 97 and the block 98 during the sliding process.

[0036] like Figure 1 As shown, a motor 10 is installed on one side of the support frame 1, and the output end of the motor 10 is fixedly connected to the corresponding end of the rotating shaft 91. The drive of the motor 10 drives the rotating shaft 91 to rotate, thereby driving the entire working process of the intermittent lifting mechanism 9.

[0037] like Figure 1 As shown, an annular groove 921 is provided on the outer side of the winding wheel 92, which provides a stable winding path for the lifting rope 93, ensures the uniform distribution and stable winding of the lifting rope 93 on the winding wheel 92, and avoids test errors caused by loose or uneven winding of the lifting rope 93.

[0038] The working principle of the automobile seat belt emergency locking simulation test device provided by the present invention is as follows:

[0039] After the device is started, the natural falling force of the counterweight 8 first pulls the slide 2 through the traction rope 7, so that the safety belt 4 to be tested connected to the slide 2 is gradually pulled out from the retractor 3 and stretched, and the safety belt 4 to be tested is pulled out of the retractor 3 partially;

[0040] During the test, the counterweight 8 is connected by the traction rope 7 and the lifting rope 93. One end of the lifting rope 93 is fixedly connected to the winding wheel 92, and the other end is connected to the counterweight 8. When the rotating shaft 91 rotates, it drives the rotating plate 95 and the sleeve 96 to rotate together. Since the two clamping blocks 98 on one side of the sleeve 96 are inserted into the grooves on the outside of the rotating wheel 94, the rotation of the sleeve 96 drives the rotating wheel 94 to rotate through the plugging effect of the clamping blocks 98 and the grooves.

[0041] The rotation of the rotating wheel 94 will rotate the winding wheel 92 connected thereto, thereby reeling in the lifting rope 93, causing the counterweight 8 to rise and accumulate force. At this time, the rising counterweight 8 reduces the gravity effect on the traction rope 7 through the pulling force of the lifting rope 93, so that the retractor 3 can elastically rewind part of the safety belt 4 to be tested, and rewind the safety belt 4 to be tested to a normal state close to that before the test;

[0042] At the same time, when the rotating shaft 91 drives the sleeve 96 to rotate, the slider 911 on the connecting piece 910 will gradually slide along the sliding groove inside the arc frame 912. As the distance between the arc frame 912 and the sleeve 96 gradually increases, the sliding of the slider 911 will guide the slide bar 97 to slide inside the sleeve 96. At the same time, the block 98 on the corresponding side will also be gradually pulled out of the groove of the rotating wheel 94 and separated. At this time, the spring 99 gradually contracts and accumulates force.

[0043] When the slider 911 slides in the slide groove until the guide block 98 is completely separated from the groove, the rotating wheel 94 rotating outside the rotating shaft 91 is no longer restricted. Under the gravity of the counterweight 8, the winding wheel 92 rotates instantly, releasing the previously wound lifting rope 93, so that the counterweight 8 suddenly pulls the slide 2 through the traction rope 7 to perform a pulling test on the safety belt 4 to check whether its emergency locking function is effective.

[0044] The rotating wheel 94 rotates under the gravity of the counterweight block 8. When the groove of the rotating wheel 94 rotates again to the sliding rod 97 on the other side of the positioning sleeve 96, since the spring 99 on the other side is still in a contracted state at this time, the blocking block 98 can be re-engaged in the groove by rebounding. At this time, the rotation of the rotating shaft 91 can drive the rotating wheel 94 and the winding wheel 92 to rotate through the rotating plate 95 and the sleeve 96, and the pulling rope 93 is re-wound to prepare for the next power storage test.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle seat belt emergency locking simulation test device, comprising: A support frame (1) is characterized in that a slide table (2) is symmetrically slidably connected to the top of the support frame (1), a retractor (3) is symmetrically arranged inside one side of the top of the support frame (1), a safety belt to be tested (4) is symmetrically arranged on the top of the support frame (1), one end of the safety belt to be tested (4) is reeled in the corresponding retractor (3), and the other end of the safety belt to be tested (4) is connected to the corresponding slide table (2), a guide shaft (5) is rotatably connected inside the other side of the top of the support frame (1), and a guide wheel (6) is symmetrically arranged on the outer side of the guide shaft (5), a traction rope (7) is arranged on one side of the slide table (2), one end of the traction rope (7) is connected to the corresponding guide wheel (6), and the other end of the traction rope (7) passes through the support frame (1), bypasses the guide wheel (6), and is fixedly connected to a counterweight (8) at the end, and an intermittent lifting mechanism (9) is installed inside the support frame (1) below the guide wheel (6).

2. The vehicle seat belt emergency locking simulation test device according to claim 1, characterized in that: The intermittent lifting mechanism (9) comprises a rotating shaft (91), a winding wheel (92), a pulling rope (93) and a rotating wheel (94); the interior of the support frame (1) is located below the guide shaft (5) and is rotatably connected to the rotating shaft (91); the outer side of the rotating shaft (91) is symmetrically rotatably connected to the winding wheel (92); a pulling rope (93) is provided on the outer side of the winding wheel (92); one end of the pulling rope (93) is fixedly connected to the winding wheel (92); the other end of the pulling rope (93) is fixedly connected to the corresponding counterweight block (8); the outer side of the rotating shaft (91) is symmetrically rotatably connected to the rotating wheel (94); one side of the rotating wheel (94) is fixedly connected to the adjacent winding wheel (92).

3. The vehicle seat belt emergency locking simulation test device according to claim 2, characterized in that: The intermittent lifting mechanism (9) further comprises: a rotating plate (95), a sleeve (96), a sliding rod (97) and a clamping block (98); the rotating plate (95) is fixedly connected to the outer side of the rotating shaft (91); the sleeve (96) is fixedly connected to the outer side of the rotating plate (95); the two ends of the sleeve (96) are respectively sleeved on the outer side of the corresponding rotating wheel (94); the sliding rods (97) are symmetrically slidably connected inside the two sides of the sleeve (96); the ends of the sliding rods (97) close to the rotating wheel (94) are fixedly connected to the clamping blocks (98); the outer side of the rotating wheel (94) is provided with a groove; the two clamping blocks (98) on one side of the sleeve (96) are respectively inserted into the corresponding grooves.

4. The vehicle seat belt emergency locking simulation test device according to claim 3, characterized in that: A spring (99) is sleeved on the outer side of the slide rod (97), and the clamping block (98) is elastically connected to the inner wall of the sleeve (96) via the spring (99).

5. The vehicle seat belt emergency locking simulation test device according to claim 3, characterized in that: The intermittent lifting mechanism (9) further comprises: a connecting piece (910), a sliding block (911) and an arc frame (912); connecting pieces (910) are provided on both sides of the sleeve (96); one end of the sliding rod (97) is fixedly connected to the corresponding connecting piece (910); the side of the connecting piece (910) away from the sleeve (96) is fixedly connected to the sliding block (911); the interior of the support frame (1) is fixedly connected to the arc frame (912) below the sleeve (96); a sliding groove is provided on the top of the arc frame (912); and the sliding block (911) is slidably connected inside the corresponding sliding groove.

6. The vehicle seat belt emergency locking simulation test device according to claim 5, characterized in that: The distance between the arc frame (912) and the sleeve (96) gradually increases.

7. The vehicle seat belt emergency locking simulation test device according to claim 3, characterized in that: A motor (10) is installed on one side of the support frame (1), and an output end of the motor (10) is fixedly connected to an end corresponding to the rotating shaft (91).

8. The vehicle seat belt emergency locking simulation test device according to claim 2, characterized in that: An annular groove (921) is formed on the outer side of the winding wheel (92).

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