A seat belt dynamic testing device

Abstract

The utility model provides a safety belt dynamic testing arrangement belongs to safety belt dynamic testing technical field, including support frame and setting test unit on it, the middle part of support frame is equipped with adjusting assembly, adjusting assembly includes the fixed frame of setting in support frame middle part one side, one end of fixed frame is equipped with the installation slot, the movable setting of installation slot has adjusting block, the one end of support frame away from adjusting block rotatably connected with rotating column, all are equipped with the mounting rod on rotating column and adjusting block, still be equipped with the limiting piece between adjusting block and installation slot, still be equipped with the drive assembly of drive adjusting block one end in installation slot, one end of support frame is equipped with the rotating assembly for driving rotating column rotates. The utility model discloses through adjusting assembly and rotating assembly cooperation, make the safety belt produce the torsional deformation of preset angle, can carry out dynamic testing to the safety belt of happening torsion, can also test the safety belt of different length simultaneously, improve the range of test greatly.

Description

Technical Field

[0001] This utility model belongs to the field of seat belt dynamic testing technology, and specifically relates to a seat belt dynamic testing device. Background Technology

[0002] In the automotive industry, seat belts are an important device for protecting the safety of people. Their quality and performance are directly related to the life safety of users. During the production and research and development of seat belts, various tests are required to ensure that they meet relevant standards and usage requirements.

[0003] Existing seat belt testing devices typically use a hydraulic cylinder to drive the test head downwards and then test the seat belt fixed at both ends. While this can test the seat belt, it is difficult to simulate the torsion state that the seat belt may experience during actual use. In reality, the seat belt may twist during use, which will affect its performance and safety. Utility Model Content

[0004] In view of this, the present invention provides a seat belt dynamic testing device, which can make the seat belt to undergo torsional deformation at a preset angle through the cooperation of the adjustment component and the rotation component, and can perform dynamic testing on seat belts that have undergone torsion. At the same time, it can also test seat belts of different lengths, greatly improving the testing range.

[0005] To address the aforementioned technical problems, this utility model provides a dynamic testing device for seat belts, comprising a support frame and a testing unit mounted thereon. An adjustment assembly is located in the middle of the support frame, including a fixed frame positioned on one side of the middle of the support frame. One end of the fixed frame has a mounting groove, in which an adjustment block is movably mounted. A rotating column is rotatably connected to the end of the support frame away from the adjustment block. Mounting rods are mounted on both the rotating column and the adjustment block. A limiting component is also provided between the adjustment block and the mounting groove. A driving assembly for driving one end of the adjustment block is also located in the mounting groove. A rotating assembly for driving the rotating column is located at one end of the support frame. Even if the seat belt undergoes a preset angle of torsional deformation, dynamic testing of the torn seat belt can be performed. Furthermore, testing of seat belts of different lengths can be conducted, significantly expanding the testing range.

[0006] The limiting component includes limiting toothed plates respectively located at the lower end of the adjusting block and the bottom of the mounting groove. The two limiting toothed plates engage in a movable meshing manner, thereby achieving the function of limiting and locking.

[0007] The testing unit includes a hydraulic cylinder mounted on the upper end of the support frame. The lower end of the telescopic end of the hydraulic cylinder is equipped with a test head, which has a semi-circular structure and provides test pressure.

[0008] The drive assembly includes a slide groove set in the mounting slot, a slider slidably connected in the slide groove, a rectangular groove at the upper end of the slider, a rectangular plate on the surface of the adjusting block near the rectangular groove, the rectangular plate being located in the rectangular groove, a lead screw rotatably connected in the slide groove, the lead screw being threadedly connected to the threaded hole on the slider, and a through hole adapted to the lead screw at one end of the support frame, which serves as a quick adjustment function.

[0009] The drive assembly also includes springs located at both ends between the upper surface of the rectangular plate and the top wall of the rectangular groove, which provide a restoring force.

[0010] The rotating assembly includes a worm gear located at the outer end of the rotating column. A support frame with symmetrically distributed fixed blocks is located at one end near the worm gear. A worm is rotatably connected between the two fixed blocks. The worm meshes with the worm gear, thus achieving rapid transmission.

[0011] A motor is located at one end of the support frame near the worm gear. The output shaft of the motor is fixedly connected to one end of the worm, thus providing a drive source for the worm.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. First, install the safety belt to be tested onto the mounting rods on the rotating column and adjusting block. When testing safety belts of different lengths, move the adjusting block within the mounting slot until it reaches the appropriate position, then stop moving. This changes the distance between the two mounting rods to accommodate different lengths of safety belts. When testing a torsional safety belt, the rotating assembly drives the rotating column to rotate, causing the mounting rods on the rotating column to rotate, which in turn causes the safety belt to undergo a torsional deformation at a preset angle. After adjustment, the testing unit operates to perform dynamic testing on the safety belt. This allows for dynamic testing of torsional safety belts and testing of safety belts of different lengths, greatly expanding the testing range. During the test, the rectangular plate and adjusting block move downwards, causing the two limiting tooth plates to re-engage tightly. The limiting components securely limit and fix the adjusting block, effectively preventing the lead screw from bearing the force generated during the test. This ensures that the pressure on the adjusting block is completely transferred to the support frame through the fixed frame, guaranteeing the structural stability of the device during the testing process.

[0014] 2. When testing the torsion of the seat belt, the motor drives the worm gear to rotate between two fixed blocks. The worm gear meshes with the worm wheel, causing the rotating column to rotate, which in turn causes the mounting rod on the rotating column to rotate. At the same time, the worm gear and the worm wheel can self-lock, ensuring that the rotating column, which has been adjusted to the correct angle, remains within the adjusted angle.

[0015] 3. When testing seat belts of different lengths, the drive screw rotates. When the screw rotates, it engages with the threaded hole of the slider, causing the slider to slide within the groove. The slider, through the engagement of the rectangular groove and the rectangular plate, moves the adjusting block within the mounting groove. During the movement, the rectangular plate, the adjusting block, and the mounting rods on it, under the action of spring force, temporarily separate the limiting toothed plate at the lower end of the adjusting block from the limiting toothed plate at the bottom of the mounting groove, facilitating the movement of the adjusting block. After moving to the appropriate position, the screw is stopped from rotating, thereby changing the distance between the two mounting rods to accommodate seat belts of different lengths. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a seat belt dynamic testing device according to the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a side view of the structure of this utility model;

[0019] Figure 4 This is an enlarged structural diagram of point A in this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 100, support frame; 200, fixed frame; 201, mounting groove; 202, adjusting block; 203, limiting toothed plate; 204, rotating column; 205, mounting rod; 300, hydraulic cylinder; 301, test head; 400, slide groove; 401, slider; 402, rectangular groove; 403, rectangular plate; 404, lead screw; 405, spring; 500, worm gear; 501, fixed block; 502, worm; 503, motor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] This embodiment provides a seat belt dynamic testing device, such as... Figure 1-5As shown: It includes a support frame 100 and a test unit mounted on it. The support frame 100 has an adjustment component in the middle. The adjustment component includes a fixed frame 200 located on one side of the middle of the support frame 100. One end of the fixed frame 200 has a mounting groove 201. An adjustment block 202 is movably mounted in the mounting groove 201. A rotating column 204 is rotatably connected to the end of the support frame 100 away from the adjustment block 202. Mounting rods 205 are provided on both the rotating column 204 and the adjustment block 202. A limiting member is also provided between the adjustment block 202 and the mounting groove 201. A driving component for driving one end of the adjustment block 202 is also provided in the mounting groove 201. A rotating component for driving the rotating column 204 is provided at one end of the support frame 100. The limiting member includes limiting toothed plates 203 located at the lower end of the adjustment block 202 and the bottom of the mounting groove 201, respectively. The two limiting toothed plates 203 are movably engaged.

[0024] First, the safety belt to be tested is installed on the mounting rod 205 on the rotating column 204 and the adjusting block 202. When testing safety belts of different lengths, the adjusting block 202 is moved within the mounting groove 201 and stops after reaching a suitable position, thereby changing the distance between the two mounting rods 205 to accommodate different lengths of safety belts. When testing a torsional safety belt, the rotating assembly drives the rotating column 204 to rotate, causing the mounting rod 205 on the rotating column 204 to rotate, thus causing the safety belt to undergo a torsional deformation at a preset angle. After adjustment, the testing unit operates to test the safety belt. The device can perform dynamic testing on seat belts that have twisted, and it can also test seat belts of different lengths, greatly expanding the testing range. During the test, the rectangular plate 403 and the adjusting block 202 move down, so that the two limiting tooth plates 203 re-engage tightly. The adjusting block 202 is stably limited and fixed by the limiting component, which can effectively prevent the lead screw 404 from bearing the force generated during the test. This ensures that the pressure on the adjusting block 202 is completely transmitted to the support frame 100 through the fixing frame 200, thus ensuring the structural stability of the device during the test.

[0025] like Figure 1-3 As shown, the test unit includes a hydraulic cylinder 300 mounted on the upper end of the support frame 100. The lower end of the telescopic end of the hydraulic cylinder 300 is provided with a test head 301, which has a semi-circular structure.

[0026] When the test unit is working, the extension end of the hydraulic cylinder 300 at the upper end of the support frame 100 drives the test head 301, which has a semi-circular structure, to move downward to perform dynamic testing on the seat belt.

[0027] like Figure 1-5As shown, the drive assembly includes a slide groove 400 disposed in the mounting groove 201, a slider 401 slidably connected in the slide groove 400, a rectangular groove 402 provided at the upper end of the slider 401, a rectangular plate 403 provided on the surface of the adjusting block 202 near the rectangular groove 402, the rectangular plate 403 being located in the rectangular groove 402, a lead screw 404 rotatably connected in the slide groove 400, the lead screw 404 being threadedly connected to the threaded hole provided on the slider 401, a through hole adapted to the lead screw 404 provided at one end of the support frame 100, and the drive assembly also includes springs 405 disposed at both ends between the upper surface of the rectangular plate 403 and the top wall of the rectangular groove 402.

[0028] When testing seat belts of different lengths, the drive screw 404 rotates. When the screw 404 rotates, it engages with the threaded hole of the slider 401, causing the slider 401 to slide within the groove 400. The slider 401, through the engagement of the rectangular groove 402 and the rectangular plate 403, causes the adjusting block 202 to move within the mounting groove 201. During the movement, under the action of the spring force of the spring 405, the rectangular plate 403, the adjusting block 202, and the mounting rod 205 on it temporarily separate the limiting tooth plate 203 at the lower end of the adjusting block 202 from the limiting tooth plate 203 at the bottom of the mounting groove 201, facilitating the movement of the adjusting block 202. After moving to the appropriate position, the screw 404 is stopped from rotating, thereby changing the distance between the two mounting rods 205 to accommodate seat belts of different lengths.

[0029] like Figure 1-3 As shown, the rotating assembly includes a worm gear 500 disposed at the outer end of the rotating column 204. The support frame 100 is provided with symmetrically distributed fixing blocks 501 at one end near the worm gear 500. A worm 502 is rotatably connected between the two fixing blocks 501. The worm 502 is meshed with the worm gear 500. A motor 503 is provided at one end of the support frame 100 near the worm gear 500. The output shaft of the motor 503 is fixedly connected to one end of the worm 502.

[0030] When the seat belt needs to be tested for torsion, the motor 503 drives the worm gear 502 to rotate between the two fixed blocks 501. The worm gear 502 meshes with the worm wheel 500 to drive the rotating column 204 to rotate, causing the mounting rod 205 on the rotating column 204 to rotate. At the same time, the worm gear 502 and the worm wheel 500 can self-lock to ensure that the rotating column 204, which has been adjusted to the correct angle, remains within the adjusted angle.

[0031] The working principle of the seat belt dynamic testing device provided by this utility model is as follows: First, the seat belt to be tested is installed on the mounting rod 205 on the rotating column 204 and the adjusting block 202. When it is necessary to test seat belts of different lengths, the drive screw 404 is rotated. When the screw 404 rotates, it engages with the threaded hole of the slider 401, causing the slider 401 to slide in the groove 400. The slider 401, through the engagement of the rectangular groove 402 and the rectangular plate 403, causes the adjusting block 202 to move in the mounting groove 201. During the movement process... In the middle, the rectangular plate 403, the adjusting block 202, and the mounting rod 205 on it, under the action of the spring force of the spring 405, temporarily separate the limiting tooth plate 203 at the lower end of the adjusting block 202 from the limiting tooth plate 203 at the bottom of the mounting groove 201, so as to facilitate the movement of the adjusting block 202. After moving to the appropriate position, the screw 404 stops rotating, thereby changing the distance between the two mounting rods 205 to accommodate seat belts of different lengths. When it is necessary to test the torsion of the seat belt, the motor 503 drives the worm gear 502 between the two fixed blocks 501. The worm gear 502 meshes with the worm wheel 500, causing the rotating column 204 to rotate. This causes the mounting rod 205 on the rotating column 204 to rotate, resulting in a preset angle of torsional deformation in the safety belt. After adjustment, the test unit operates. The extension end of the hydraulic cylinder 300 at the upper end of the support frame 100 drives the semi-circular test head 301 to move downwards, performing dynamic testing on the safety belt. This allows for dynamic testing of torsional safety belts and testing of safety belts of different lengths, greatly expanding the testing range. During the test, the rectangular plate 403 and the adjusting block 202 move downwards under the elastic force of the spring 405, causing the two limiting tooth plates 203 to re-engage tightly. The limiting components securely limit and fix the adjusting block 202, effectively preventing the lead screw 404 from bearing the force generated during the test. This ensures that the pressure on the adjusting block 202 is completely transmitted to the support frame 100 through the fixing frame 200, guaranteeing the structural stability of the device during the test and extending the service life of precision components such as the lead screw 404.

[0032] Furthermore, it should be noted that, in the description of this utility model, 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 according to the specific circumstances.

[0033] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A seatbelt dynamic testing device, characterized in that: The device includes a support frame (100) and a test unit mounted thereon. The support frame (100) has an adjustment assembly in the middle. The adjustment assembly includes a fixed frame (200) on one side of the middle of the support frame (100). One end of the fixed frame (200) has a mounting groove (201). An adjustment block (202) is movably mounted in the mounting groove (201). A rotating column (204) is rotatably connected to the end of the support frame (100) away from the adjustment block (202). Mounting rods (205) are provided on both the rotating column (204) and the adjustment block (202). A limiting member is also provided between the adjustment block (202) and the mounting groove (201). A driving assembly for driving one end of the adjustment block (202) is also provided in the mounting groove (201). A rotating assembly for driving the rotating column (204) to rotate is provided at one end of the support frame (100).

2. The seatbelt dynamic testing device as described in claim 1, characterized in that: The limiting component includes limiting toothed plates (203) respectively disposed at the lower end of the adjusting block (202) and the bottom of the mounting groove (201), and the two limiting toothed plates (203) are movably engaged.

3. The seatbelt dynamic testing device as described in claim 1, characterized in that: The test unit includes a hydraulic cylinder (300) disposed on the upper end of the support frame (100), and a test head (301) is provided at the lower end of the telescopic end of the hydraulic cylinder (300), and the test head (301) has a semi-circular structure.

4. The seat belt dynamic testing device as described in claim 1, characterized in that: The drive assembly includes a slide groove (400) disposed in the mounting groove (201), a slider (401) slidably connected in the slide groove (400), a rectangular groove (402) provided at the upper end of the slider (401), a rectangular plate (403) provided on the surface of the adjusting block (202) near the rectangular groove (402), the rectangular plate (403) being located in the rectangular groove (402), a lead screw (404) rotatably connected in the slide groove (400), the lead screw (404) being threadedly connected to a threaded hole provided on the slider (401), and a through hole adapted to the lead screw (404) provided at one end of the support frame (100).

5. The seatbelt dynamic testing device as described in claim 4, characterized in that: The drive assembly also includes springs (405) disposed at both ends between the upper surface of the rectangular plate (403) and the top wall of the rectangular groove (402).

6. The seatbelt dynamic testing device as described in claim 1, characterized in that: The rotating assembly includes a worm gear (500) disposed at the outer end of the rotating column (204). The support frame (100) has symmetrically distributed fixing blocks (501) at one end near the worm gear (500). A worm (502) is rotatably connected between the two fixing blocks (501), and the worm (502) meshes with the worm gear (500).

7. The seatbelt dynamic testing device as described in claim 6, characterized in that: The support frame (100) has a motor (503) at one end near the worm gear (500), and the output shaft of the motor (503) is fixedly connected to one end of the worm (502).

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