Safety belt lock catch opening force test bench
By designing a seatbelt buckle opening force testing bench, and utilizing the cooperation of clamping components, pulling components, and driving components, the buckle opening force can be accurately measured, solving the problem of insufficient accuracy of existing equipment and achieving efficient and low-cost testing.
Patent Information
- Application Number
- CN202520813154.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-27
AI Technical Summary
The existing seat belt buckle opening force testing bench sensors and data acquisition systems are not accurate enough to accurately measure the buckle opening force, and high-precision equipment is expensive.
A test bench for the opening force of seat belt buckles was designed. The buckle shell is fixed by a clamping component. The push rod slides on the guide rod to read the displacement value by using a pulling component and a driving component. Combined with a micro motor and gear structure, the buckle tongue is unlocked from the buckle shell and the push rod is kept stationary, so as to accurately measure the opening force.
It improves testing accuracy, reduces experimental costs, and provides intuitive and convenient numerical results.
Smart Images
Figure CN223966186U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat belt buckle technology, specifically a seat belt buckle opening force testing bench. Background Technology
[0002] A car seatbelt buckle is a mechanical device used to secure the two ends of a seatbelt together, ensuring effective protection of passengers in emergency situations such as collisions or sudden braking.
[0003] Car seatbelt buckles typically undergo an opening force test during the manufacturing process. The main reasons for this are as follows: 1. Ensuring safety in emergency situations: The opening force test verifies whether the seatbelt buckle can release quickly and smoothly in an emergency (such as a collision or accident), ensuring passengers can escape rapidly. 2. Balancing comfort and safety: Insufficient opening force may lead to accidental activation, while excessive opening force may affect the passenger's normal usage experience. The purpose of the test is to find the optimal balance between comfort and safety.
[0004] Currently, there are test benches for testing the opening force of seat belt buckles. However, existing test benches for seat belt buckle opening force have some shortcomings. For example, the sensors and data acquisition systems of some test benches are not accurate enough to accurately measure the opening force of the buckle. This may affect the accurate evaluation of the buckle performance. Using high-precision sensors and data acquisition systems will increase costs. Utility Model Content
[0005] The purpose of this invention is to provide a seatbelt buckle opening force testing bench to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A seatbelt buckle opening force testing bench includes an operating table, a buckle housing, and a locking tongue. The buckle housing is fixed to the operating table by a clamping assembly. One end of the buckle housing has an opening with an unlocking button inside the opening. One end of the locking tongue is located inside the opening and is locked to the buckle housing.
[0008] The operating platform is equipped with a pulling component, which is connected to the locking tongue. Under the action of the pulling component, the locking tongue always tends to separate from the latch housing.
[0009] The operating table is provided with a guide rod, a push rod is slidably mounted on the guide rod, and a scale is provided on the guide rod. One end of the push rod corresponds to the unlock button. The operating table is also provided with a drive assembly, which is connected to the other end of the push rod. When the drive assembly is running, the push rod will push the unlock button so that the latch and the latch housing are released from the latch.
[0010] A mating structure is provided between the pulling component and the driving component. At the moment the latch and the latch housing are released, the pulling component will drive the driving component to move through the mating structure so that the push rod remains stationary.
[0011] As a further embodiment of this utility model:
[0012] The traction assembly includes a fixed base on the operating table and a pull rod that slides with the fixed base. Limit plates and hooks are respectively provided at both ends of the pull rod.
[0013] The hook and the locking tongue are interlocked, and a first spring is sleeved on the outer wall of the pull rod. The two ends of the first spring abut against the fixed seat and the limiting plate, respectively.
[0014] As a further improvement of this utility model:
[0015] The drive assembly includes a lead screw rotatably mounted on the operating table and a No. 1 gear coaxially mounted on the lead screw, and the other end of the push rod is threadedly engaged with the lead screw.
[0016] The operating platform is equipped with a support, the support is equipped with a crossbar, and a movable frame is slidably mounted on the crossbar.
[0017] As a further improvement of this utility model:
[0018] A rotating shaft is rotatably mounted on the mobile frame, and a second gear is coaxially mounted on the rotating shaft, the second gear meshing with the first gear.
[0019] The mobile frame is equipped with a micro motor, and the output end of the micro motor is fixedly connected to one end of the rotating shaft.
[0020] As a further improvement of this utility model:
[0021] A second spring is fitted on the outer wall of the crossbar. The two ends of the second spring abut against the bracket and the movable frame, respectively. Under the action of the second spring, the movable frame will drive the second gear to always tend to move closer to the first gear.
[0022] The spring constant of the first spring is greater than that of the spring constant of the second spring.
[0023] As a further improvement of this utility model:
[0024] The mating structure includes a first trapezoidal block and a second trapezoidal block. The first trapezoidal block is fixed on the pull rod, and the second trapezoidal block is fixed on the movable frame.
[0025] The first trapezoidal block and the second trapezoidal block cooperate with each other, and the inclined surface of the first trapezoidal block abuts against the inclined surface of the second trapezoidal block.
[0026] As a further improvement of this utility model:
[0027] The clamping assembly includes a U-shaped frame disposed on the operating table and a threaded rod that engages with the top of the U-shaped frame through a vertical thread, and a knob is provided at the top of the threaded rod;
[0028] A pressure plate is movably connected to the bottom of the threaded rod, and the pressure plate, in conjunction with the operating table, clamps the locking housing.
[0029] Compared with the prior art, the beneficial effects of this utility model are:
[0030] The latch housing is fixed to the operating table using a clamping assembly, with one end of the latch tongue located inside the socket and interlocked with the latch housing. Since the latch tongue always tends to separate from the latch housing under the action of the pulling assembly, when the push rod presses the unlock button under the action of the driving assembly and causes the latch tongue and latch housing to disengage, the required force for opening can be obtained by reading the displacement of the push rod sliding on the guide rod. At the moment of unlocking, the pulling assembly will immediately act and interact with the driving assembly through the cooperating structure to keep the push rod stationary, making it easy to read the value of the displacement of the push rod.
[0031] This application utilizes the interaction between the clamping component, the pulling component, the driving component, and the mating structure to unlock the latch using a push rod. Furthermore, by reading the displacement value of the push rod on the guide rod, the opening force can be determined. This not only improves the accuracy of the test but also makes the data acquisition more intuitive and convenient, while reducing experimental costs. Attached Figure Description
[0032] Figure 1 A schematic diagram of the overall structure of one embodiment of a seatbelt buckle opening force testing bench.
[0033] Figure 2 This is a schematic diagram of the overall structure of one embodiment of a seatbelt buckle opening force testing bench from another perspective.
[0034] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0035] Figure 4 A cross-sectional view of the push rod in one embodiment of a seatbelt buckle opening force testing bench.
[0036] Figure 5 for Figure 4 Enlarged view of section B in the middle.
[0037] Figure 6 A schematic diagram of the overall structure of one embodiment of a seatbelt buckle opening force testing bench.
[0038] Figure 7 for Figure 6 Enlarged view of point C in the middle.
[0039] Figure 8 This is a partial structural breakdown diagram of one embodiment of a seatbelt buckle opening force testing bench.
[0040] In the diagram: 1. Control panel; 2. Lock housing; 201. Socket; 3. Lock tongue; 4. Unlock button; 5. Guide rod; 6. Push rod; 7. Fixed base; 8. Pull rod; 9. Limit plate; 10. Hook; 11. First spring; 12. Lead screw; 13. Gear No. 1; 14. Bracket; 15. Crossbar; 16. Moving frame; 17. Second spring; 18. Rotating shaft; 19. Gear No. 2; 20. Micro motor; 21. Trapezoidal block No. 1; 22. Trapezoidal block No. 2; 23. U-shaped frame; 24. Threaded rod; 25. Pressure plate; 26. Knob. Detailed Implementation
[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0042] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0043] Please see Figures 1-8In this embodiment of the utility model, a seat belt buckle opening force testing bench includes an operating table 1, a buckle housing 2, and a locking tongue 3. The buckle housing 2 is fixed to the operating table 1 by a clamping assembly. One end of the buckle housing 2 is provided with an insertion port 201, and an unlocking button 4 is provided in the insertion port 201. One end of the locking tongue 3 is located in the insertion port 201 and is locked to the buckle housing 2.
[0044] The operating table 1 is equipped with a pulling component, which is connected to the locking tongue 3. Under the action of the pulling component, the locking tongue 3 always tends to separate from the latch housing 2.
[0045] The operating table 1 is provided with a guide rod 5, and a push rod 6 is slidably mounted on the guide rod 5. A scale is provided on the guide rod 5. One end of the push rod 6 corresponds to the unlock button 4. The operating table 1 is also provided with a drive assembly, which is connected to the other end of the push rod 6. When the drive assembly is running, the push rod 6 will push the unlock button 4 so that the latch 3 and the latch housing 2 are released from the latch.
[0046] A mating structure is provided between the pulling component and the driving component. At the moment when the locking tongue 3 and the locking housing 2 are released, the pulling component will drive the driving component to move through the mating structure so that the push rod 6 remains stationary.
[0047] In this solution, the locking housing 2 is fixed to the operating table 1 using a clamping assembly, and one end of the locking tongue 3 is located inside the socket 201 and interlocks with the locking housing 2. Since the locking tongue 3 always tends to separate from the locking housing 2 under the action of the pulling assembly, when the push rod 6 presses the unlocking button 4 under the action of the driving assembly and causes the locking tongue 3 and the locking housing 2 to disengage, the required force for opening can be obtained by reading the displacement of the push rod 6 sliding on the guide rod 5. At the moment of unlocking, the pulling assembly will immediately take action, and through the interaction of the cooperating structure and the driving assembly, the push rod 6 will remain stationary, making it easy to read the value of the displacement of the push rod 6.
[0048] As a further embodiment of this utility model, the traction assembly includes a fixed seat 7 disposed on the operating table 1 and a pull rod 8 that slides with the fixed seat 7. Limiting plates 9 and hooks 10 are respectively provided at both ends of the pull rod 8.
[0049] The hook 10 and the locking tongue 3 are interlocked. The outer wall of the pull rod 8 is fitted with a first spring 11, and the two ends of the first spring 11 abut against the fixed seat 7 and the limiting plate 9, respectively.
[0050] In this embodiment, since the pull rod 8 and the fixed seat 7 are slidably engaged, the hook 10 and the locking tongue 3 are interlocked, and the two ends of the first spring 11 abut against the fixed seat 7 and the limiting plate 9 respectively, the first spring 11 will exert a pulling force on the locking tongue 3 through the limiting plate 9, the pull rod 8 and the hook 10, so that the locking tongue 3 always tends to separate from the locking housing 2.
[0051] As a further embodiment of this utility model, the driving assembly includes a lead screw 12 rotatably mounted on the operating table 1 and a first gear 13 coaxially mounted on the lead screw 12, and the other end of the push rod 6 is threadedly engaged with the lead screw 12.
[0052] The operating table 1 is provided with a support 14, the support 14 is provided with a crossbar 15, and a movable frame 16 is slidably provided on the crossbar 15;
[0053] A rotating shaft 18 is rotatably mounted on the movable frame 16, and a second gear 19 is coaxially mounted on the rotating shaft 18. The second gear 19 meshes with the first gear 13.
[0054] The mobile frame 16 is equipped with a micro motor 20, and the output end of the micro motor 20 is fixedly connected to one end of the rotating shaft 18.
[0055] The outer wall of the crossbar 15 is fitted with a second spring 17. The two ends of the second spring 17 abut against the bracket 14 and the movable frame 16 respectively. Under the action of the second spring 17, the movable frame 16 will drive the second gear 19 to always tend to move closer to the first gear 13.
[0056] The spring constant of the first spring 11 is greater than that of the spring constant of the second spring 17.
[0057] In this embodiment, due to the presence of the second spring 17 and its compressed state, the moving frame 16 will drive the second gear 19 and the first gear 13 to remain in a meshed state through the rotating shaft 18 without any other external force.
[0058] Since the output end of the micro motor 20 is fixedly connected to one end of the rotating shaft 18, and the second gear 19 fixed on the rotating shaft 18 meshes with the first gear 13 fixed on the lead screw 12, when the micro motor 20 is started, the rotating shaft 18 will rotate, and the lead screw 12 will also rotate accordingly.
[0059] Since the push rod 6 is slidably mounted on the guide rod 5, one end of the push rod 6 corresponds to the unlock button 4, and the other end of the push rod 6 is threadedly engaged with the lead screw 12, when the lead screw 12 rotates, the push rod 6 will slide on the guide rod 5 and press the unlock button 4.
[0060] As a further embodiment of this utility model, the mating structure includes a first trapezoidal block 21 and a second trapezoidal block 22, wherein the first trapezoidal block 21 is fixed on the pull rod 8 and the second trapezoidal block 22 is fixed on the movable frame 16.
[0061] The first trapezoidal block 21 and the second trapezoidal block 22 cooperate with each other, and the inclined surface of the first trapezoidal block 21 abuts against the inclined surface of the second trapezoidal block 22.
[0062] In this embodiment, due to the presence of the first spring 11 and its compression state, at the moment when the push rod 6 presses the unlock button 4 to release the latch 3 and the latch housing 2, the pull rod 8 will drive the latch 3 to slide horizontally together through the hook 10, so that the latch 3 and the latch housing 2 are separated.
[0063] Furthermore, since the first trapezoidal block 21 fixed on the pull rod 8 and the second trapezoidal block 22 fixed on the movable frame 16 cooperate with each other, the inclined surface of the first trapezoidal block 21 abuts against the inclined surface of the second trapezoidal block 22, and the elastic coefficient of the first spring 11 is greater than that of the second spring 17, during the horizontal sliding of the pull rod 8, the first trapezoidal block 21 will push the second trapezoidal block 22, thereby causing the movable frame 16 to slide on the crossbar 15 and further compress the second spring 17;
[0064] During the sliding process of the movable frame 16, the meshing gear 19 and gear 13 will separate, and the lead screw 12 will also stop rotating, that is, the push rod 6 will remain stationary.
[0065] As a further embodiment of this utility model, the clamping assembly includes a U-shaped frame 23 disposed on the operating table 1 and a threaded rod 24 that is vertically threaded to the top of the U-shaped frame 23, and a knob 26 is disposed on the top of the threaded rod 24.
[0066] The bottom of the threaded rod 24 is movably connected to a pressure plate 25, which, in conjunction with the operating table 1, clamps the locking housing 2.
[0067] In this embodiment, when in use, the locking housing 2 is placed on the operating table 1 and located below the pressure plate 25. Then, the threaded rod 24 is rotated by the knob 26. Since the threaded rod 24 is vertically threaded with the top of the U-shaped frame 23, the threaded rod 24 will move downward while rotating, thereby driving the pressure plate 25 to cooperate with the operating table 1 to clamp and fix the locking housing 2.
[0068] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0069] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A seatbelt buckle opening force testing bench, comprising an operating table (1), a buckle housing (2), and a locking tongue (3), characterized in that, The latch housing (2) is fixed to the operating table (1) by a clamping assembly. One end of the latch housing (2) is provided with a socket (201). An unlocking button (4) is provided in the socket (201). One end of the latch tongue (3) is located in the socket (201) and is locked to the latch housing (2). The operating table (1) is provided with a pulling component, which is connected to the locking tongue (3). Under the action of the pulling component, the locking tongue (3) always tends to separate from the latch housing (2). The operating table (1) is provided with a guide rod (5), a push rod (6) is slidably provided on the guide rod (5), a scale is provided on the guide rod (5), one end of the push rod (6) corresponds to the unlock button (4), the operating table (1) is also provided with a drive assembly, the drive assembly is connected to the other end of the push rod (6), when the drive assembly is running, the push rod (6) will push the unlock button (4) so that the latch (3) and the latch housing (2) are unlocked; A mating structure is provided between the pulling component and the driving component. At the moment when the latch (3) and the latch housing (2) are released from the latch, the pulling component will drive the driving component to move through the mating structure so that the push rod (6) remains stationary.
2. The seatbelt buckle opening force testing bench according to claim 1, characterized in that, The traction assembly includes a fixed seat (7) disposed on the operating table (1) and a pull rod (8) that slides with the fixed seat (7). Limit plates (9) and hooks (10) are respectively provided at both ends of the pull rod (8). The hook (10) and the locking tongue (3) are interlocked. The outer wall of the pull rod (8) is fitted with a first spring (11). The two ends of the first spring (11) abut against the fixed seat (7) and the limiting plate (9) respectively.
3. The seatbelt buckle opening force testing bench according to claim 2, characterized in that, The drive assembly includes a lead screw (12) rotatably mounted on the operating table (1) and a first gear (13) coaxially mounted on the lead screw (12). The other end of the push rod (6) is threadedly engaged with the lead screw (12). The operating table (1) is provided with a support (14), the support (14) is provided with a crossbar (15), and a movable frame (16) is slidably provided on the crossbar (15).
4. A seatbelt buckle opening force testing bench according to claim 3, characterized in that, A rotating shaft (18) is rotatably mounted on the movable frame (16), and a second gear (19) is coaxially mounted on the rotating shaft (18). The second gear (19) meshes with the first gear (13). A micro motor (20) is provided on the mobile frame (16), and the output end of the micro motor (20) is fixedly connected to one end of the rotating shaft (18).
5. A seatbelt buckle opening force testing bench according to claim 4, characterized in that, The outer wall of the crossbar (15) is fitted with a second spring (17). The two ends of the second spring (17) abut against the bracket (14) and the movable frame (16) respectively. Under the action of the second spring (17), the movable frame (16) will drive the second gear (19) to always have a tendency to move closer to the first gear (13). The elastic coefficient of the first spring (11) is greater than that of the second spring (17).
6. A seatbelt buckle opening force testing bench according to claim 3, characterized in that, The mating structure includes a first trapezoidal block (21) and a second trapezoidal block (22). The first trapezoidal block (21) is fixed on the pull rod (8), and the second trapezoidal block (22) is fixed on the movable frame (16). The first trapezoidal block (21) and the second trapezoidal block (22) cooperate with each other, and the inclined surface of the first trapezoidal block (21) abuts against the inclined surface of the second trapezoidal block (22).
7. A seatbelt buckle opening force testing bench according to claim 1, characterized in that, The clamping assembly includes a U-shaped frame (23) disposed on the operating table (1) and a threaded rod (24) that is vertically threaded to the top of the U-shaped frame (23). A knob (26) is disposed on the top of the threaded rod (24). The bottom of the threaded rod (24) is movably connected to a pressure plate (25), which, together with the operating table (1), clamps the locking housing (2).