A device for measuring the pulling out and retracting force of a seat belt webbing

Abstract

The utility model belongs to the technical field of automobile safety monitoring, and specifically is a device for measuring the pulling out and winding force of a safety belt webbing, comprising an action rod, a connecting block is installed on one side of the action rod, a connecting rod is installed in the U-shaped groove, mounting seats are installed on the outer walls of both sides of the cylinder, a connecting arm is installed in the mounting seat, a through groove is provided in the connecting arm, one end of the connecting rod is installed in the through groove, one end of the connecting arm is fixedly connected with a clamping plate, a protrusion is installed on one side of the mounting plate, and a groove is provided in the rectangular groove; the cylinder is started, and the action end of the cylinder pulls the action rod to move inward, the action rod drives the connecting rod to move inward through the connecting block, and the movement of the connecting rod drives the connecting arm to rotate around a pin shaft on the mounting seat, so that the two clamping plates are close to each other, and the protrusion is embedded in the groove, so that the safety belt can be stably clamped, and the phenomenon of movement or loosening of the safety belt during the measurement process can be avoided, thereby improving the accuracy of the measurement result.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile safety monitoring, in particular to a device for measuring the pulling out and winding up force of a safety belt webbing. Background Art

[0002] As consumers' requirements for car riding comfort continue to increase, the retraction force and extension force of car seat belts have begun to attract the attention of vehicle manufacturers and seat belt manufacturers. Therefore, a measuring device is needed to measure the extension and retraction force.

[0003] A Chinese patent with the announcement number CN113155342B discloses a device and method for measuring the pull-out and retracting force of a seat belt webbing, including a mounting plate, a guide assembly arranged on the mounting plate, a sensing assembly and a pull-up assembly. The webbing is pulled by the pull-up assembly and is in close contact with the sensing assembly under the guidance of the guide assembly. The sensing assembly is used to sense the force applied by the webbing to the sensing assembly during movement. The measuring device and method described in the present invention can eliminate the significant differences in the measurement results of various testing institutions and production and use enterprises by accurately measuring and evaluating the pull-out force and retracting force of the seat belt under wearing conditions, and can also provide an intuitive reference for the impact of the seat belt on the riding comfort of the occupants, and provide an accurate basis for the product improvement of the seat belt enterprises.

[0004] However, the above-mentioned device and method for measuring the pull-out and retracting force of a seat belt webbing still have some problems. In practical applications, when measuring the seat belt, the seat belt clamping may be unstable, causing the seat belt to move or loosen during the measurement process, thereby causing inaccurate measurement data. Therefore, a device for measuring the pull-out and retracting force of a seat belt webbing is proposed to address the above-mentioned problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problem that in actual applications, when measuring the installation belt, the installation belt clamping is unstable, resulting in the installation belt moving or loosening during the measurement process, thereby causing inaccurate measurement data, the utility model proposes a device for measuring the pull-out and retracting force of the seat belt webbing.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a device for measuring the pulling out and winding up force of a safety belt webbing described in the utility model comprises a main board, a fixed clamping assembly is installed on the upper surface of the main board, the fixed clamping assembly comprises a support plate, a cylinder is installed through the inside of the support plate, an action end of the cylinder is installed with an action rod, a connecting block is installed on one side of the action rod, U-shaped grooves are symmetrically provided at both ends of the connecting block, a connecting rod is installed inside the U-shaped groove through a pin shaft, mounting seats are symmetrically installed on the outer walls of both sides of the cylinder, and the inside of the mounting seat Connecting arms are installed through pin shaft cooperation, a through groove is opened inside the middle end of the connecting arm, one end of the connecting rod is installed inside the through groove through pin shaft cooperation, one end of the connecting arm is fixedly connected with a clamping plate, a mounting plate is fixedly installed on one side of one clamping plate, a plurality of protrusions are fixedly installed on one side of the mounting plate at equal intervals, a rectangular groove matching the mounting plate is opened inside the other clamping plate, a plurality of grooves are opened inside the rectangular groove at equal intervals, which can stably clamp the safety belt to prevent it from moving or loosening during the measurement process, thereby improving the accuracy of the measurement result.

[0007] Preferably, a cavity is provided inside the main board, a guide rod is fixedly connected between two sides at one edge of the interior of the cavity, a screw rod is rotatably connected between two sides at the other edge of the interior of the cavity, a driving motor is installed on one side of the main board, one end of the screw rod is cooperated and connected with the output end of the driving motor, a moving block is slidably installed inside the cavity, screw holes and positioning holes are respectively provided at two ends of the moving block, wherein the guide rod passes through the positioning hole, the screw rod passes through the screw hole, a slider is fixedly installed on the top side of the moving block, a slide groove which passes through the cavity is provided inside the main board, the slider is slidably installed inside the slide groove, and the bottom side of the support plate is fixedly connected to the top side of the slider, so as to facilitate the movement of the fixed clamping assembly, thereby enabling the detection of its pulling force.

[0008] Preferably, a fixing plate is installed at one end of the top side of the main board, a retractor is installed on the top side of the fixing plate, and a torque sensor is installed inside the retractor to facilitate measurement of the retracting force of the mounting belt.

[0009] Preferably, a connecting plate is installed at the other end of the main board, a support rod is fixedly installed between the connecting plate and the fixed plate, and the support plate is slidably installed on the outer wall of the support rod to provide a stable supporting effect.

[0010] Preferably, a support leg is fixedly installed on the bottom side of the main board, a slide rail is opened inside the top side of the main board, a sliding block is slidably installed inside the slide rail, the sliding block is slidably installed on the outer wall of the support rod, a tension sensor is installed on one side of the sliding block close to the support plate, a tension spring is fixedly connected between the connecting plate and the sliding block, and the tension spring is sleeved on the outer wall of the support rod to ensure that the tension sensor is always in contact with the support plate, thereby enabling accurate pull-out force measurement operations.

[0011] Preferably, an indicator light is installed on the top side of the main board, a display screen is installed on the top side of the main board, and a control box is installed on one side of the main board. The control box is electrically connected to the electrical components inside the measuring device, and is used for signal transmission of the torque sensor and the tension sensor, as well as operation control of the indicator light and other electrical components, thereby improving the measurement efficiency and accuracy of the mounting belt and facilitating the operator to operate the measuring device.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model passes the seat belt webbing to be measured between two clamping plates, starts the cylinder, and the action end of the cylinder pulls the action rod to move inward, and the action rod drives the connecting rod to move inward through the connecting block, and the movement of the connecting rod drives the connecting arm to rotate around the pin shaft on the mounting seat, so that the two clamping plates are close to each other, and the protrusion on the mounting plate is embedded in the groove in the rectangular groove, which can stably clamp the seat belt and prevent it from moving or loosening during the measurement process, thereby improving the accuracy of the measurement result; BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 This is a schematic diagram of the main structure of the measuring device in the utility model;

[0016] Figure 2 is a schematic diagram of the structure of the fixing clamp assembly;

[0017] Figure 3 It is a schematic diagram of the local structure between the clamping plate and the mounting plate;

[0018] Figure 4 It is a schematic diagram of the local structure between the clamping plate and the rectangular groove;

[0019] Figure 5It is a structural schematic diagram of the connection relationship between the fixed plate and its retractor;

[0020] Figure 6 This is a schematic diagram of the structure of the tension sensor working components.

[0021] In the figure: 1. support leg; 2. main board; 3. support plate; 4. cylinder; 5. action rod; 6. connecting block; 7. connecting rod; 8. mounting seat; 9. connecting arm; 10. through groove; 11. clamping plate; 12. mounting plate; 13. protrusion; 14. rectangular groove; 15. groove; 16. cavity; 17. guide rod; 18. screw rod; 19. drive motor; 20. moving block; 21. slider; 22. slide groove; 23. fixed plate; 24. retractor; 25. torque sensor; 26. connecting plate; 27. support rod; 28. slide rail; 29. ​​sliding block; 30. tension sensor; 31. tension spring; 32. indicator light; 33. display screen; 34. control box. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4As shown, a device for measuring the pulling-out and winding-up force of a seat belt webbing comprises a main board 2, a fixed clamping assembly is installed on the upper surface of the main board 2, the fixed clamping assembly comprises a support plate 3, a cylinder 4 is installed inside the support plate 3, an acting end of the cylinder 4 is installed with an acting rod 5, a connecting block 6 is installed on one side of the acting rod 5, U-shaped grooves are symmetrically provided at both ends of the connecting block 6, a connecting rod 7 is installed inside the U-shaped groove through a pin shaft, mounting seats 8 are symmetrically installed on the outer walls of both sides of the cylinder 4, connecting arms 9 are installed inside the mounting seats 8 through a pin shaft, a through groove 10 is provided inside the middle end of the connecting arm 9, one end of the connecting rod 7 is installed inside the through groove 10 through a pin shaft, one end of the connecting arm 9 is fixedly connected with a clamping plate 11, a mounting plate 12 is fixedly installed on one side of one of the clamping plates 11, a plurality of protrusions 13 are fixedly installed on one side of the mounting plate 12 at equal intervals, and a matching mounting plate 12 is provided inside the other clamping plate 11 The rectangular groove 14 has a plurality of grooves 15 equidistantly arranged inside the rectangular groove 14; during operation, in actual application, when measuring the safety belt, the safety belt clamping may be unstable, resulting in the movement or loosening of the safety belt during the measurement process, which may lead to inaccurate measurement data. The safety belt webbing to be measured is passed through the two clamping plates 11, and the cylinder 4 is started. The action end of the cylinder 4 pulls the action rod 5 to move inward, and the action rod 5 drives the connecting rod 7 to move inward through the connecting block 6. The movement of the connecting rod 7 drives the connecting arm 9 to rotate around the pin shaft on the mounting seat 8, so that the two clamping plates 11 are close to each other, and the protrusion 13 on the mounting plate 12 is embedded in the groove 15 in the rectangular groove 14, so as to fix the safety belt webbing. When the action end of the cylinder 4 is extended, the connecting arm 9 rotates in the opposite direction under the drive of the connecting rod 7, so that the two clamping plates 11 loosen the safety belt webbing, and the safety belt can be stably clamped to avoid the movement or loosening of the safety belt during the measurement process, thereby improving the accuracy of the measurement result.

[0024] See also Figure 1 , 6As shown, a cavity 16 is provided inside the main board 2, a guide rod 17 is fixedly connected between the two sides of the inner edge of one side of the cavity 16, a screw rod 18 is rotatably connected between the two sides of the inner edge of the other side of the cavity 16, a drive motor 19 is installed on one side of the main board 2, one end of the screw rod 18 is matched with the output end of the drive motor 19, a moving block 20 is slidably installed inside the cavity 16, screw holes and positioning holes are respectively provided at both ends of the moving block 20, wherein the guide rod 17 is arranged through the positioning hole, the screw rod 18 is arranged through the screw hole, a slider 21 is fixedly installed on the top side of the moving block 20, and the main board 2 has a cavity 19 provided inside. The slide groove 22 passes through the chamber 16, and the slider 21 is slidably installed inside the slide groove 22, and the bottom side of the support plate 3 is fixedly connected to the top side of the slider 21; during operation, when measuring work is required, by starting the drive motor 19, the drive motor 19 drives the screw rod 18 to rotate inside the cavity chamber 16 through the output end, and the rotation of the screw rod 18 causes the moving block 20 to generate a linear motion on the screw rod 18, while maintaining a stable moving direction under the restriction of the guide rod 17, and the slider 21 on the moving block 20 slides in the slide groove 22, thereby driving the support plate 3 and its fixed clamping assembly to move on the main board 2, which is convenient for moving the fixed clamping assembly, so that its pulling force can be detected.

[0025] See also Figure 5-6 As shown, a fixing plate 23 is installed at one end of the top side of the main board 2, a retractor 24 is installed on the top side of the fixing plate 23, and a torque sensor 25 is installed inside the retractor 24;

[0026] A connecting plate 26 is installed at the other end of the main board 2, a supporting rod 27 is fixedly installed between the connecting plate 26 and the fixing plate 23, and the supporting plate 3 is slidably installed on the outer wall of the supporting rod 27;

[0027] A support leg 1 is fixedly installed on the bottom side of the main board 2, a slide rail 28 is provided inside the top side of the main board 2, a slide block 29 is slidably installed inside the slide rail 28, the slide block 29 is slidably installed on the outer wall of the support rod 27, a tension sensor 30 is installed on one side of the slide block 29 close to the support plate 3, a tension spring 31 is fixedly connected between the connecting plate 26 and the slide block 29, and the tension spring 31 is sleeved on the outer wall of the support rod 27;

[0028] An indicator light 32 is installed on the top side of the main board 2, a display screen 33 is installed on the top side of the main board 2, and a control box 34 is installed on one side of the main board 2. The control box 34 is electrically connected to the electrical components inside the measuring device, and is used for signal transmission of the torque sensor 25 and the tension sensor 30, as well as operation control of the indicator light 32 and other electrical components; when working, as consumers' requirements for car riding comfort continue to increase, the retraction force and pull-out force of car seat belts have begun to attract the attention of various vehicle companies and seat belt manufacturers. Therefore, a measuring device is needed to measure the pull-out and retraction force. First, the pull-out and retraction force are preset through the control box 34, and one end of the seat belt webbing to be measured is connected to the retractor 24. Through the retraction and release operation of the retractor 24, the seat belt webbing is pulled out and retracted in the measuring device. The torque sensor 25 installed inside the retractor 24 can The torque generated by the retractor 24 when retracting the seat belt webbing is measured. The torque sensor 25 converts the measured torque value into an electrical signal and transmits it to the control box 34. When the seat belt webbing is pulled out under the cooperation of the fixed clamping assembly, the support plate 3 slides on the outer wall of the support rod 27, thereby squeezing the tension sensor 30 and the sliding block 29 to slide in the slide rail 28, and generating pressure on the tension sensor 30. The tension sensor 30 converts the measured tension value into an electrical signal and transmits it to the control box 34. The control box 34 displays the signal through the display screen 33. The control box 34 displays the result through the indicator light 32 according to the preset safety value range, thereby judging whether the seat belt webbing is qualified. When the tension spring 31 acts, it ensures that the tension sensor 30 is always in contact with the support plate 3, thereby improving the measurement accuracy. The models of the tension sensor 30 and the torque sensor 25 are UL-P05S and NOS-C903, respectively.

[0029] The working principle is that the pulling out and retracting forces are preset through the control box 34, one end of the seat belt webbing to be measured is connected to the retractor 24, and the retracting and releasing operations of the retractor 24 cause the seat belt webbing to be pulled out and retracted in the measuring device;

[0030] The seat belt webbing to be measured is passed through the two clamping plates 11, and the cylinder 4 is started. The action end of the cylinder 4 pulls the action rod 5 to move inward, and the action rod 5 drives the connecting rod 7 to move inward through the connecting block 6. The movement of the connecting rod 7 drives the connecting arm 9 to rotate around the pin shaft on the mounting seat 8, so that the two clamping plates 11 are close to each other, and the protrusion 13 on the mounting plate 12 is embedded in the groove 15 in the rectangular groove 14, so as to fix the seat belt webbing. When the action end of the cylinder 4 is extended, the connecting arm 9 rotates in the opposite direction under the drive of the connecting rod 7, so that the two clamping plates 11 loosen the seat belt webbing, which can stably clamp the seat belt and prevent it from moving or loosening during the measurement process, thereby improving the accuracy of the measurement result;

[0031] When it is necessary to perform a measurement operation, the drive motor 19 is started, and the drive motor 19 drives the screw rod 18 to rotate inside the cavity 16 through the output end. The rotation of the screw rod 18 causes the moving block 20 to generate a linear motion on the screw rod 18, and at the same time, maintain a stable moving direction under the restriction of the guide rod 17. The slider 21 on the moving block 20 slides in the slide groove 22, thereby driving the support plate 3 and its fixed clamping assembly to move on the main board 2, so as to facilitate the movement of the fixed clamping assembly, so as to detect its pulling force;

[0032] The torque sensor 25 installed inside the retractor 24 can measure the torque generated by the retractor 24 when retracting the seat belt webbing. The torque sensor 25 converts the measured torque value into an electrical signal and transmits it to the control box 34. When the seat belt webbing is pulled out under the cooperation of the fixed clamping assembly, the support plate 3 will slide on the outer wall of the support rod 27, thereby squeezing the tension sensor 30 and the sliding block 29 to slide in the slide rail 28, and generating pressure on the tension sensor 30. The tension sensor 30 converts the measured tension value into an electrical signal and transmits it to the control box 34. The control box 34 will display the signal through the display screen 33. The control box 34 displays the result through the indicator light 32 according to the preset safety value range, thereby judging whether the seat belt webbing is qualified. When the tension spring 31 acts, it ensures that the tension sensor 30 is always in contact with the support plate 3, thereby improving the measurement accuracy. The models of the tension sensor 30 and the torque sensor 25 are UL-P05S and NOS-C903, respectively.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for measuring the pulling out and retracting force of a seat belt webbing, characterized in that: The invention comprises a main board (2), the upper surface of which is mounted a fixed clamping assembly, the fixed clamping assembly comprising a support plate (3), the interior of which is penetrated by a cylinder (4), the action end of which is mounted an action rod (5), a connecting block (6) is mounted on one side of the action rod (5), U-shaped grooves are symmetrically provided at both ends of the connecting block (6), a connecting rod (7) is mounted inside the U-shaped groove through a pin, mounting seats (8) are symmetrically mounted on the outer walls of both sides of the cylinder (4), and the interior of the mounting seats (8) is mounted through a pin. A connecting arm (9), wherein a through groove (10) is provided inside the middle end of each connecting arm (9), one end of each connecting rod (7) is mounted inside the through groove (10) through a pin shaft, and one end of each connecting arm (9) is fixedly connected to a clamping plate (11), wherein a mounting plate (12) is fixedly mounted on one side of one clamping plate (11), and a plurality of protrusions (13) are fixedly mounted on one side of the mounting plate (12) at equal intervals, and a rectangular groove (14) matching the mounting plate (12) is provided inside the other clamping plate (11), and a plurality of grooves (15) are provided inside the rectangular groove (14) at equal intervals.

2. A device for measuring the pulling out and retracting force of a safety belt webbing according to claim 1, characterized in that: A cavity (16) is provided inside the main board (2), a guide rod (17) is fixedly connected between two sides of an inner edge of one side of the cavity (16), a screw rod (18) is rotatably connected between two sides of an inner edge of the other side of the cavity (16), a driving motor (19) is installed on one side of the main board (2), one end of the screw rod (18) is matched and connected with an output end of the driving motor (19), a moving block (20) is slidably installed inside the cavity (16), screw holes and positioning holes are respectively provided at two ends of the moving block (20), wherein the guide rod (17) passes through the positioning hole, and the screw rod (18) passes through the screw hole, a slider (21) is fixedly installed on the top side of the moving block (20), a slide groove (22) which passes through the cavity (16) is provided inside the main board (2), the slider (21) is slidably installed inside the slide groove (22), and the bottom side of the support plate (3) is fixedly connected to the top side of the slider (21).

3. A device for measuring the pulling out and retracting force of a safety belt webbing according to claim 2, characterized in that: A fixing plate (23) is installed at one end of the top side of the main board (2), a retractor (24) is installed on the top side of the fixing plate (23), and a torque sensor (25) is installed inside the retractor (24).

4. A device for measuring the pulling out and retracting force of a safety belt webbing according to claim 3, characterized in that: A connecting plate (26) is installed at the other end of the main board (2), a supporting rod (27) is fixedly installed between the connecting plate (26) and the fixing plate (23), and the supporting plate (3) is slidably installed on the outer wall of the supporting rod (27).

5. A device for measuring the pulling out and retracting force of a safety belt webbing according to claim 4, characterized in that: A support leg (1) is fixedly installed on the bottom side of the main board (2), a slide rail (28) is opened inside the top side of the main board (2), a slide block (29) is slidably installed inside the slide rail (28), the slide block (29) is slidably installed on the outer wall of the support rod (27), a tension sensor (30) is installed on one side of the slide block (29) close to the support plate (3), a tension spring (31) is fixedly connected between the connecting plate (26) and the slide block (29), and the tension spring (31) is sleeved on the outer wall of the support rod (27).

6. A device for measuring the pulling out and retracting force of a safety belt webbing according to claim 5, characterized in that: An indicator light (32) is installed on the top side of the main board (2), a display screen (33) is installed on the top side of the main board (2), and a control box (34) is installed on one side of the main board (2). The control box (34) is electrically connected to the electrical components inside the measuring device, and is used for signal transmission of the torque sensor (25) and the tension sensor (30), as well as for operation control of the indicator light (32) and other electrical components.

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