Safety belt buckle force testing apparatus

Abstract

The application belongs to the technical field of force measuring equipment, and discloses a safety belt lock buckle force measuring test equipment, which comprises a test bench rack, a lock buckle mounting device, a load applying device and a force measuring device. The load applying device comprises a first driving assembly and a tension member, the tension member is connected between the first driving assembly and the lock tongue, and the first driving assembly applies a load force away from the lock buckle to the lock tongue through the tension member. The force measuring device comprises a second driving assembly, a bearing seat assembly and a load sensor. The second driving assembly is used to drive the bearing seat assembly to approach or move away from the lock buckle mounting device, so that the bearing seat assembly is pressed against the opening button on the lock buckle or the bearing seat assembly inserts the lock tongue into the lock buckle. The load sensor is used to detect the opening force of the lock tongue from the lock buckle and the insertion force of the lock tongue inserted into the lock buckle. The safety belt lock buckle force measuring test equipment can simulate the use of the safety belt, improve the detection accuracy and reduce the detection cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of force measuring equipment, in particular to a safety belt buckle force measuring test equipment. BACKGROUND

[0002] The safety belt on the car is an important safety protection component. After the lock tongue connected to the safety belt is inserted into the lock buckle, the safety belt is arranged in front of the driver or passenger to protect the driver and passenger. The connection stability of the lock tongue and the lock buckle affects the safety of the driver and passenger. Therefore, the connection of the lock tongue and the lock buckle needs to be tested. In the existing test technology, two force measuring devices are usually used to test the opening force and the insertion force of the lock tongue and the lock buckle. The cost is high, the equipment needs to be replaced, the test is not convenient, and the existing force measuring device cannot simulate the actual use state of the safety belt. When testing the opening force of the lock tongue and the lock buckle, the direction of the load applied to the lock tongue cannot be adjusted.

[0003] Therefore, there is an urgent need for a safety belt buckle force measuring test equipment for detecting the opening force and the insertion force of the lock tongue on the lock buckle, improving the detection accuracy, and reducing the detection cost. SUMMARY

[0004] An object of the present application is to provide a safety belt buckle force measuring test equipment for detecting the opening force and the insertion force of the lock tongue on the lock buckle, which can simulate the use of the safety belt, improve the detection accuracy, and reduce the detection cost.

[0005] To achieve this object, the present application adopts the following technical solutions:

[0006] The safety belt buckle force measuring test equipment comprises:

[0007] A test bench frame;

[0008] A lock buckle mounting device is arranged on the test bench frame, and the lock buckle is fixedly installed on the lock buckle mounting device;

[0009] A load applying device is arranged on one side of the lock buckle mounting device, and the load applying device comprises a first driving assembly and a tension member. One end of the tension member is connected with the output end of the first driving assembly, and the other end of the tension member is connected with the lock tongue. The first driving assembly applies a load force away from the lock buckle to the lock tongue through the tension member;

[0010] A force measuring device is movably arranged on one side of the lock mounting device, and the force measuring device comprises a second driving assembly, a bearing seat assembly and a load sensor. The bearing seat assembly is arranged on the output end of the second driving assembly, and the load sensor is arranged on the bearing seat assembly. The second driving assembly is used to drive the bearing seat assembly to move close to or away from the lock mounting device, so that the bearing seat assembly presses the opening button on the lock or the bearing seat assembly inserts the lock tongue into the lock. The load sensor is used to detect the opening force of the lock tongue from the lock and the insertion force of the lock tongue into the lock.

[0011] As an optional technical solution, the bearing seat assembly comprises a first mounting plate, a second mounting plate and a pressure head. The first mounting plate is arranged on the output end of the second driving assembly, and the load sensor is arranged on the first mounting plate. The pressure head is arranged on the load sensor, and the second mounting plate is arranged on the first mounting plate and abuts against the pressure head. The second mounting plate is used to bear the lock tongue.

[0012] As an optional technical solution, the force measuring device further comprises a third driving assembly, and the bearing seat assembly further comprises a moving beam and a guide frame. The guide frame is arranged on the output end of the second driving assembly, and the third driving assembly is arranged on the guide frame. The moving beam is arranged on the output end of the third driving assembly, and the first mounting plate is arranged on the moving beam. The third driving assembly is used to drive the moving beam to move the first mounting plate along the Z-axis direction.

[0013] As an optional technical solution, the load applying device is arranged on one side of the lock mounting device along the X-axis direction. The lock mounting device comprises a bearing table and a third mounting plate. The bearing table is fixedly arranged on the test bench rack, and the third mounting plate is movably arranged on the bearing table along the X-axis direction. The lock is fixedly arranged on the third mounting plate.

[0014] As an optional technical solution, the test bench rack is provided with a direction adjusting device. The direction adjusting device comprises a fourth driving assembly, and the load applying device is connected to the output end of the fourth driving assembly. The fourth driving assembly is used to drive the load applying device to move along the Y-axis direction.

[0015] As an optional technical scheme, the load applying device further comprises a first sliding table, a rotating disc, a mounting bracket and a pulley, the first sliding table is connected with an output end of the fourth driving assembly, the fourth driving assembly is used for driving the first sliding table to move along the Y-axis direction, the rotating disc is rotatably installed on the first sliding table in the Z-axis direction, the mounting bracket is installed on the rotating disc, the pulley is rotatably installed on the mounting bracket in the Y-axis direction, the first driving assembly is installed on the first sliding table, the tensile member is a woven tape, and the woven tape passes through the pulley.

[0016] As an optional technical scheme, the first driving assembly comprises a cylinder and a weight, one end of the woven tape passing through the pulley is connected with the weight, and the cylinder is used for lifting the pulley or jacking up the weight.

[0017] As an optional technical scheme, the load applying device further comprises a bearing bracket, the bearing bracket is installed at the bottom of the first sliding table, and the bearing bracket is used for bearing the weight.

[0018] As an optional technical scheme, the fourth driving assembly comprises a fourth hand wheel and a fourth lead screw, the first sliding table is threadedly connected with the fourth lead screw, the fourth hand wheel is connected with the fourth lead screw, and the fourth hand wheel is used for driving the fourth lead screw to rotate so that the load applying device moves along the Y-axis direction.

[0019] As an optional technical scheme, the second driving assembly comprises a second hand wheel and a second lead screw, the bearing seat assembly is threadedly connected with the second lead screw, the second hand wheel is connected with the second lead screw, and the second hand wheel is used for driving the second lead screw to rotate so that the bearing seat assembly moves along the X-axis direction.

[0020] The present application has the following beneficial effects:

[0021] The safety belt buckle force testing device provided by the application is used for detecting the opening force and the insertion force of the lock tongue on the buckle. When the opening force of the lock tongue from the buckle needs to be detected, the lock tongue and the buckle are installed on the buckle installation device, the lock tongue is inserted in the buckle at this time, the pulling piece of the load applying device is selectively connected with the lock tongue, the first driving assembly applies a preset load force to the lock tongue through the pulling piece, the actual operating state of the safety belt on the lock tongue is simulated, and the detection accuracy is improved. After the first driving assembly applies the preset load force to the lock tongue through the pulling piece, the lock tongue has not separated from the buckle, at this time, the second driving assembly drives the bearing seat assembly to gradually approach the buckle installation device and press the opening button on the buckle, until the lock tongue is ejected from the buckle, and the load sensor automatically measures the pressure applied by the bearing seat assembly to the opening button at the moment when the lock tongue is ejected from the buckle. The pressure is the opening force of the lock tongue on the buckle; when the insertion force of the lock tongue into the buckle needs to be detected, the buckle is installed on the buckle installation device, and the lock tongue is installed on the bearing seat assembly, the pulling piece of the load applying device is selectively connected with the lock tongue, the first driving assembly applies a preset load force to the lock tongue through the pulling piece, the actual operating state of the safety belt on the lock tongue is simulated, and the detection accuracy is improved. At this time, the second driving assembly drives the bearing seat assembly to gradually approach the buckle installation device, the lock tongue on the bearing seat assembly is inserted into the buckle on the buckle installation device, and the load sensor automatically measures the insertion force applied by the bearing seat assembly to the lock tongue at the moment when the lock tongue is inserted into the buckle. The safety belt buckle force testing device provided by the application can detect the opening force and the insertion force of the lock tongue on the buckle respectively, reduce the number of detection equipment, and reduce the detection cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described in detail below according to the drawings and embodiments.

[0023] Figure 1 The first perspective view of the safety belt buckle force testing device (part of the structure is not shown) described in the embodiment is shown in the structure diagram.

[0024] Figure 2 The top view of the safety belt buckle force testing device (part of the structure is not shown) described in the embodiment is shown in the structure diagram.

[0025] Figure 3 The left view of the safety belt buckle force testing device (part of the structure is not shown) described in the embodiment is shown in the structure diagram.

[0026] Figure 4 The front view of the safety belt buckle force testing device described in the embodiment is shown in the structure diagram.

[0027] Figure 5 The partial structure diagram of the force measuring device described in the embodiment is shown in the structure diagram.

[0028] In the drawings:

[0029] 100, lock tongue;

[0030] 1, test bench frame;

[0031] 2, lock catch mounting device; 21, bearing table; 22, third mounting plate; 23, front baffle; 24, rear baffle; 25, pressing plate; 26, positioning screw;

[0032] 3, load applying device; 31, first sliding table; 311, sliding block; 32, rotating disc; 33, mounting bracket; 34, pulley; 35, woven tape; 36, air cylinder; 37, weight; 38, bearing bracket; 39, connecting plate; 310, rotating shaft;

[0033] 4, force measuring device; 41, load sensor; 42, first mounting plate; 43, second mounting plate; 44, pressing head; 45, moving cross beam; 46, guide bracket; 47, second hand wheel; 48, second screw rod; 49, second sliding table; 410, third hand wheel; 411, third screw rod;

[0034] 5, direction adjusting device; 51, fourth hand wheel; 52, fourth screw rod. DETAILED DESCRIPTION

[0035] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0038] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only used to distinguish in the description, and have no special meaning.

[0039] In the description of the present application, the description referring to the terms "an embodiment", "an example", and the like 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 present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0040] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0041] As Figures 1 to 5As shown, the embodiment provides a seat belt buckle force test device, which comprises a test bench frame 1, a buckle mounting device 2, a load applying device 3 and a force measuring device 4; the buckle mounting device 2 is arranged on the test bench frame 1, and the buckle is fixedly mounted on the buckle mounting device 2; the load applying device 3 is arranged on one side of the buckle mounting device 2, and the load applying device 3 comprises a first driving assembly and a tension member, one end of the tension member is connected with the output end of the first driving assembly, the other end of the tension member is connected with the lock tongue 100, and the first driving assembly applies a load force away from the buckle to the lock tongue 100 through the tension member; the force measuring device 4 is movably arranged on one side of the buckle mounting device 2, and the force measuring device 4 comprises a second driving assembly, a bearing seat assembly and a load sensor 41, the bearing seat assembly is arranged on the output end of the second driving assembly, the load sensor 41 is mounted on the bearing seat assembly, the second driving assembly is used to drive the bearing seat assembly to approach or move away from the buckle mounting device 2, so that the bearing seat assembly is pressed to the opening button on the buckle or the bearing seat assembly inserts the lock tongue 100 into the buckle, and the load sensor 41 is used to detect the opening force of the lock tongue 100 away from the buckle and the insertion force of the lock tongue 100 inserted into the buckle.

[0042] Specifically, when the opening force of the locking tongue 100 from the lock buckle needs to be detected, the locking tongue 100 and the lock buckle are first installed on the lock buckle mounting device 2, at this time, the locking tongue 100 is inserted in the lock buckle, the tension member of the load applying device 3 is selectively connected with the locking tongue 100, the first driving assembly applies a preset load force to the locking tongue 100 through the tension member, simulating the tension of the safety belt on the locking tongue 100 in the actual operating state, improving the accuracy of detection, after the first driving assembly applies a preset load force to the locking tongue 100 through the tension member, the locking tongue 100 has not yet separated from the lock buckle, at this time, the second driving assembly drives the bearing seat assembly to gradually approach the lock buckle mounting device 2 and press the opening button on the lock buckle, until the locking tongue 100 is ejected from the lock buckle, the load sensor 41 automatically measures the pressure applied by the bearing seat assembly to the opening button at the moment when the locking tongue 100 is ejected from the lock buckle, and the pressure is the opening force of the locking tongue 100 on the lock buckle; when the insertion force of the locking tongue 100 into the lock buckle needs to be detected, the lock buckle is first installed on the lock buckle mounting device 2, and the locking tongue 100 is installed on the bearing seat assembly, the tension member of the load applying device 3 is selectively connected with the locking tongue 100, the first driving assembly applies a preset load force to the locking tongue 100 through the tension member, simulating the tension of the safety belt on the locking tongue 100 in the actual operating state, improving the accuracy of detection, at this time, the second driving assembly drives the bearing seat assembly to gradually approach the lock buckle mounting device 2, the locking tongue 100 installed on the bearing seat assembly is inserted into the lock buckle installed on the lock buckle mounting device 2, and the load sensor 41 automatically measures the insertion force applied by the bearing seat assembly to the locking tongue 100 at the moment when the locking tongue 100 is inserted into the lock buckle; the safety belt lock buckle force test equipment of the embodiment can detect the opening force and the insertion force of the locking tongue 100 on the lock buckle respectively, reduce the number of detection equipment, and reduce the detection cost.

[0043] In the embodiment, the tension member of the load applying device 3 is selectively connected with the locking tongue 100, that is, the opening force detection and the insertion force detection of the locking tongue 100 on the lock buckle both have two test conditions of loading and not loading, when the opening force detection and the insertion force detection of the locking tongue 100 on the lock buckle both need to be tested under the condition of loading, the first driving assembly applies tension to the locking tongue 100 through the tension member, when the opening force detection and the insertion force detection of the locking tongue 100 on the lock buckle both do not need to be tested under the condition of loading, the first driving assembly does not apply tension.

[0044] Optionally, the load applying device 3 is arranged on one side of the lock buckle mounting device 2 along the X-axis direction, the lock buckle mounting device 2 includes a bearing table 21 and a third mounting plate 22, the bearing table 21 is fixedly installed on the test bench rack 1, the third mounting plate 22 is movably installed on the bearing table 21 along the X-axis direction, and the lock buckle is fixedly installed on the third mounting plate 22.

[0045] Specifically, when the opening force of the locking tongue 100 is needed to be detected, the third mounting plate 22 is moved to the side of the bearing table 21 close to the load applying device 3 along the X-axis direction, and when the insertion force of the locking tongue 100 is needed to be detected, the third mounting plate 22 is moved to the side of the bearing table 21 away from the load applying device 3 along the X-axis direction. The third mounting plate 22 is installed at different positions of the bearing table 21, which corresponds to the detection of the opening force and the insertion force of the locking tongue 100, and can improve the accuracy of the detection. For example, since the lock catch is fixedly installed on the third mounting plate 22, the moving path of the opening button of the lock catch is short, that is, the bearing seat assembly is pressed to the opening button to detect the opening force of the locking tongue 100, and the opening button only moves a short distance, and the locking tongue 100 can be ejected from the lock catch. When the insertion force of the locking tongue 100 is detected, the moving distance of the locking tongue 100 is relatively long to be completely inserted into the lock catch, so the third mounting plate 22 needs to be installed on the side of the bearing table 21 away from the load applying device 3, thereby improving the accuracy of the detection.

[0046] Optionally, the lock catch mounting device 2 further comprises a front baffle 23, a rear baffle 24, a pressing plate 25 and a positioning screw 26. The third mounting plate 22 is provided with a positioning groove along the X-axis direction, the positioning screw 26 passes through the positioning groove and fixes the third mounting plate 22 on the bearing table 21, the front baffle 23 and the rear baffle 24 are arranged on the third mounting plate 22 in front of and behind each other along the X-axis direction, the pressing plate 25 is arranged on the front baffle 23, the pressing plate 25 presses the lock catch against the third mounting plate 22, and the rear baffle 24 is used to limit the movement of the lock catch along the X-axis direction.

[0047] Optionally, the length of the positioning groove is 140 mm, and the third mounting plate 22 can move 140 mm forward and backward along the X-axis direction.

[0048] Optionally, the test bench frame 1 is provided with a direction adjusting device 5, and the direction adjusting device 5 comprises a fourth driving assembly. The load applying device 3 is connected to the output end of the fourth driving assembly, and the fourth driving assembly is used to drive the load applying device 3 to move along the Y-axis direction.

[0049] Specifically, in actual situations, the pulling force of the safety belt on the locking tongue 100 is not directional, so the fourth driving assembly drives the load applying device 3 to move along the Y-axis direction through the direction adjusting device 5, which can simulate the pulling force of the safety belt on the locking tongue 100 in different directions, thereby improving the accuracy of the detection.

[0050] Optionally, the load applying device 3 further comprises a first sliding table 31, a rotating disc 32, a mounting bracket 33 and a pulley 34, the first sliding table 31 is connected with an output end of a fourth driving assembly, the fourth driving assembly is used for driving the first sliding table 31 to move along the Y-axis direction, the rotating disc 32 is rotatably installed on the first sliding table 31 along the Z-axis direction, the mounting bracket 33 is installed on the rotating disc 32, the pulley 34 is rotatably installed on the mounting bracket 33 along the Y-axis direction, a first driving assembly is installed on the first sliding table 31, the tension member is a woven belt 35, and the woven belt 35 passes through the pulley 34.

[0051] Specifically, after the direction adjusting device 5 drives the load applying device 3 to move along the Y-axis direction, the tension member deviates from the X-axis direction, therefore, in order to ensure the effectiveness and accuracy of force transmission, the tension member of the embodiment adopts the woven belt 35, the woven belt 35 can pass through the pulley 34, the pulley 34 changes the direction of force transmission, and the pulley 34 can rotate along the Z-axis direction on the rotating disc 32 with the mounting bracket 33, so as to ensure that the extension direction of the woven belt 35 is always perpendicular to the central axis direction of the pulley 34, and ensure the effectiveness and accuracy of force transmission.

[0052] Optionally, the first driving assembly comprises a cylinder 36 and a weight 37, one end of the woven belt 35 passing through the pulley 34 is connected with the weight 37, and the cylinder 36 is used for lifting the pulley 34 or jacking up the weight 37.

[0053] Optionally, the load applying device 3 further comprises a bearing bracket 38, the bearing bracket 38 is installed on the bottom of the first sliding table 31, and the bearing bracket 38 is used for bearing the weight 37.

[0054] In some embodiments, the cylinder 36 is installed on the bearing bracket 38, the weight 37 is located above the cylinder 36, when it is needed to load the lock tongue 100, the output end of the cylinder 36 is retracted to be separated from the weight 37, the gravity of the weight 37 is transmitted to the lock tongue 100 through the belt 35, when it is not needed to load the lock tongue 100, the output end of the cylinder 36 is extended to lift the weight 37, the gravity of the weight 37 is applied to the cylinder 36, at this time, the lock tongue 100 is not affected by the gravity of the weight 37; in some other embodiments, the cylinder 36 is installed on the mounting bracket 33, the connecting plate 39 is arranged on the output end of the cylinder 36, the rotating shaft 310 is installed on the connecting plate 39, the pulley 34 is arranged around the horizontal line and is sleeved on the outer periphery of the rotating shaft 310, when it is needed to load the lock tongue 100, the cylinder 36 lifts the connecting plate 39, the rotating shaft 310 and the pulley 34, so that the weight 37 is separated from the bearing bracket 38, the gravity of the weight 37 is transmitted to the lock tongue 100 through the belt 35, when it is not needed to load the lock tongue 100, the cylinder 36 lowers the pulley 34, so that the weight 37 is supported on the bearing bracket 38, at this time, the lock tongue 100 is not affected by the gravity of the weight 37. The weight of the weight 37 can be set according to actual needs, for example, 200N or 300N, when it is needed to apply different load forces to the lock tongue 100, different weights of the weight 37 can also be replaced to achieve this purpose.

[0055] Optionally, the bearing bracket 38 is provided with a rubber pad, which is used to elastically support the cylinder 36 or the weight 37.

[0056] Optionally, the stroke of the output end of the cylinder 36 can be set according to actual needs, for example, 80mm or 120mm.

[0057] Optionally, the fourth driving assembly includes a fourth hand wheel 51 and a fourth lead screw 52, the first sliding table 31 is threadedly connected to the fourth lead screw 52, the fourth hand wheel 51 is connected to the fourth lead screw 52, and the fourth hand wheel 51 is used to drive the fourth lead screw 52 to rotate to move the load applying device 3 along the Y-axis direction. The tester can manually rotate the fourth hand wheel 51, so as to move the load applying device 3 along the Y-axis direction.

[0058] Optionally, the bottom of the first sliding table 31 is provided with a sliding block 311, the sliding block 311 is sleeved on the outer periphery of the fourth lead screw 52, and the sliding block 311 is in transmission connection with the fourth lead screw 52.

[0059] Optionally, the stroke of the load applying device 3 on the fourth lead screw 52 can be set according to actual needs, for example, 220mm or 250mm.

[0060] Optionally, the test bench rack 1 is provided with a second sliding rail and sliding block assembly, the second sliding rail and sliding block assembly extends along the X-axis direction, and the bearing seat assembly is installed on the second sliding rail and sliding block assembly, which is used to support and guide the bearing seat assembly.

[0061] Optionally, the bearing seat assembly comprises the first mounting plate 42, the second mounting plate 43, and the pressure head 44, the first mounting plate 42 is arranged at the output end of the second driving assembly, the load sensor 41 is mounted on the first mounting plate 42, the pressure head 44 is mounted on the load sensor 41, the second mounting plate 43 is arranged on the first mounting plate 42 and abuts against the pressure head 44, and the second mounting plate 43 is used for bearing the lock tongue 100.

[0062] Specifically, when the opening force of the lock tongue 100 from the lock catch needs to be detected, the pressure head 44 is pressed towards the opening button of the lock catch, the load sensor 41 can measure the pressure of the pressure head 44, and the pressure of the pressure head 44 at the moment when the lock tongue 100 is ejected from the lock catch is the opening force of the lock tongue 100; when the insertion force of the lock tongue 100 into the lock catch needs to be detected, the lock tongue 100 is mounted on the second mounting plate 43, the second mounting plate 43 drives the lock tongue 100 to be inserted into the lock catch, the force of the second mounting plate 43 is transmitted to the load sensor 41 through the pressure head 44, and the pressure at the moment when the lock tongue 100 is inserted into the lock catch is the insertion force of the lock tongue 100.

[0063] The load sensor 41 used in the embodiment has a small range and high sensitivity, and frequent installation and adjustment can easily cause the detection accuracy to decrease and even damage the load sensor 41 prematurely. To solve the problem, in the embodiment, the pressure head 44 is arranged on the side of the load sensor 41 facing the lock catch, and neither the insertion force nor the opening force of the lock tongue 100 needs to dismount the load sensor 41 from the first mounting plate 42, so that the detection accuracy is ensured, the load sensor 41 is prevented from being damaged prematurely, and the service life of the load sensor 41 is ensured.

[0064] Optionally, the bearing seat assembly further comprises the second sliding table 49, the second sliding table 49 is mounted on the second sliding rail sliding block assembly and is threadedly connected with the second lead screw 48, and the guide frame 46 is fixedly mounted on the second sliding table 49.

[0065] Optionally, the force measuring device 4 further comprises the third driving assembly, the bearing seat assembly further comprises the moving cross beam 45 and the guide frame 46, the guide frame 46 is arranged at the output end of the second driving assembly, the third driving assembly is arranged on the guide frame 46, the moving cross beam 45 is mounted at the output end of the third driving assembly, the first mounting plate 42 is arranged on the moving cross beam 45, and the third driving assembly is used for driving the moving cross beam 45 to drive the first mounting plate 42 to move along the Z-axis direction.

[0066] Specifically, the first mounting plate 42 and the second mounting plate 43 are arranged in the Z-axis direction to avoid interference when measuring the force; in order to ensure that different specifications of the lock tongue 100 and the lock catch can be detected, the third driving assembly is used to adjust the position of the first mounting plate 42 and the second mounting plate 43 relative to the lock catch; when the opening force of the lock tongue 100 being separated from the lock catch needs to be detected, the pressure head 44 on the first mounting plate 42 is aligned with the opening button of the lock catch; when the insertion force of the lock tongue 100 being inserted into the lock catch needs to be detected, the lock tongue 100 on the second mounting plate 43 is aligned with the insertion slot of the lock catch.

[0067] Optionally, the third driving assembly includes a third hand wheel 410 and a third screw rod 411, the third hand wheel 410 is rotationally arranged on the guide frame 46, the third screw rod 411 is connected with the third hand wheel 410 and extends along the Y-axis direction, and the moving cross beam 45 is threadedly connected with the third screw rod 411. The tester can manually rotate the third hand wheel 410, so that the moving cross beam 45 moves along the Z-axis direction.

[0068] Optionally, the moving distance of the moving cross beam 45 is 50 millimeters.

[0069] Optionally, the second driving assembly includes a second hand wheel 47 and a second screw rod 48, the bearing seat assembly is threadedly connected with the second screw rod 48, the second hand wheel 47 is connected with the second screw rod 48, and the second hand wheel 47 is used to drive the second screw rod 48 to rotate to move the bearing seat assembly along the X-axis direction. The tester can manually rotate the second hand wheel 47, so that the bearing seat assembly moves along the X-axis direction.

[0070] In addition, the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A seatbelt buckle force testing device, characterized in that, include: Test bench frame (1); A locking mounting device (2) is set on the test bench frame (1), and the locking buckle is fixedly installed on the locking mounting device (2); A load application device (3) is disposed on one side of the latch mounting device (2). The load application device (3) includes a first drive assembly and a tension member. One end of the tension member is connected to the output end of the first drive assembly, and the other end of the tension member is connected to the latch (100). The first drive assembly applies a load force away from the latch to the latch (100) through the tension member. A force measuring device (4) is movably disposed on one side of the latch mounting device (2). The force measuring device (4) includes a second drive assembly, a support assembly, and a load sensor (41). The support assembly is disposed at the output end of the second drive assembly. The load sensor (41) is mounted on the support assembly. The second drive assembly is used to drive the support assembly to move closer to or away from the latch mounting device (2), so that the support assembly presses against the opening button on the latch or the support assembly inserts the latch tongue (100) into the latch. The load sensor (41) is used to detect the opening force of the latch tongue (100) disengaging from the latch and the insertion force of the latch tongue (100) into the latch. The bearing assembly includes a first mounting plate (42), a second mounting plate (43), and a pressure head (44). The first mounting plate (42) is disposed at the output end of the second drive assembly. The load sensor (41) is mounted on the first mounting plate (42), and the pressure head (44) is mounted on the load sensor (41). The second mounting plate (43) is disposed on the first mounting plate (42) and abuts against the pressure head (44). The second mounting plate (43) is used to support the locking tongue (100). When it is necessary to detect the opening force of the latch (100) disengaging from the latch, the pressure head (44) presses against the opening button of the latch, and the load sensor (41) can measure the pressure of the pressure head (44). The pressure of the pressure head (44) at the moment when the latch (100) pops out of the latch is the opening force of the latch (100). When it is necessary to detect the insertion force of the latch (100) into the latch, the latch (100) is installed on the second mounting plate (43), and the second mounting plate (43) drives the latch (100) to insert into the latch. The force on the second mounting plate (43) is transmitted to the load sensor (41) through the pressure head (44), and the pressure of the latch (100) at the moment of insertion into the latch is the insertion force of the latch (100).

2. The seat belt buckle force testing equipment according to claim 1, characterized in that, The force measuring device (4) further includes a third drive assembly, and the bearing seat assembly further includes a movable crossbeam (45) and a guide frame (46). The guide frame (46) is disposed at the output end of the second drive assembly, the third drive assembly is disposed on the guide frame (46), the movable crossbeam (45) is mounted on the output end of the third drive assembly, and the first mounting plate (42) is disposed on the movable crossbeam (45). The third drive assembly is used to drive the movable crossbeam (45) to move the first mounting plate (42) along the Z-axis direction.

3. The seat belt buckle force testing equipment according to claim 1, characterized in that, The load application device (3) is disposed on one side of the locking mounting device (2) along the X-axis direction. The locking mounting device (2) includes a support platform (21) and a third mounting plate (22). The support platform (21) is fixedly mounted on the test bench frame (1). The third mounting plate (22) is movably mounted on the support platform (21) along the X-axis direction. The lock is fixedly mounted on the third mounting plate (22).

4. The seat belt buckle force testing equipment according to claim 3, characterized in that, The test bench frame (1) is provided with a direction adjustment device (5), which includes a fourth drive component. The load application device (3) is connected to the output end of the fourth drive component. The fourth drive component is used to drive the load application device (3) to move along the Y-axis.

5. The seat belt buckle force testing equipment according to claim 4, characterized in that, The load application device (3) further includes a first slide (31), a turntable (32), a mounting bracket (33), and a pulley (34). The first slide (31) is connected to the output end of the fourth drive assembly. The fourth drive assembly is used to drive the first slide (31) to move along the Y-axis. The turntable (32) is rotatably mounted on the first slide (31) about the Z-axis. The mounting bracket (33) is mounted on the turntable (32). The pulley (34) is rotatably mounted on the mounting bracket (33) about the Y-axis. The first drive assembly is mounted on the first slide (31). The tensioning element is a webbing (35), which passes around the pulley (34).

6. The seat belt buckle force testing equipment according to claim 5, characterized in that, The first drive assembly includes a cylinder (36) and a weight (37). One end of the webbing (35) that passes around the pulley (34) is connected to the weight (37). The cylinder (36) is used to lift the pulley (34) or lift the weight (37).

7. The seat belt buckle force testing equipment according to claim 6, characterized in that, The load application device (3) further includes a support bracket (38), which is installed at the bottom of the first slide (31) and is used to support the weight (37).

8. The seat belt buckle force testing equipment according to claim 5, characterized in that, The fourth drive assembly includes a fourth handwheel (51) and a fourth lead screw (52). The first slide (31) is threaded to the fourth lead screw (52). The fourth handwheel (51) is connected to the fourth lead screw (52). The fourth handwheel (51) is used to drive the fourth lead screw (52) to rotate so that the load application device (3) moves along the Y-axis.

9. The seat belt buckle force testing equipment according to claim 1, characterized in that, The second drive assembly includes a second handwheel (47) and a second lead screw (48). The bearing assembly is threadedly connected to the second lead screw (48). The second handwheel (47) is connected to the second lead screw (48). The second handwheel (47) is used to drive the second lead screw (48) to rotate so that the bearing assembly moves along the X-axis.

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