Fastening structure for automobile safety belt fracture test

Abstract

The utility model relates to a fastening structure, in particular to a fastening structure for an automobile safety belt fracture test, which comprises a test frame, a tightening mechanism and a rotating mechanism are arranged on the test frame, and the tightening mechanism is rotatably arranged on the test frame; the tightening mechanism comprises a pricking needle, the pricking needle is used for pricking the test safety belt, the tightening mechanism comprises an outer cylinder, through grooves are uniformly formed in a shell of the outer cylinder, the pricking needle is in sliding connection with the outer cylinder, and the pricking needle pricks the test safety belt to increase the friction force between the test safety belt and the surface of the outer cylinder. According to the utility model, through the cooperation of the tightening mechanism and the rotating mechanism, the pricking needle is firstly driven by the tightening mechanism to enter the tested safety belt, so that the safety belt cannot be separated from the outer cylinder due to the application of external force, and the pricking needle only enters the outer cylinder, so that the safety belt on the outer cylinder is further tightened; therefore, the safety belt is normally tested by external force.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fastening structure, specifically a fastening structure for automobile safety belt rupture test. BACKGROUND

[0002] Automobile safety belt is a vital safety component in a vehicle, and its main function is to reduce injury by restraining the position of the occupant when the vehicle collides or brakes in emergency.

[0003] Automobile safety belt needs to be strictly tested for rupture before leaving the factory. The rupture test is generally carried out by a winding machine. The safety belt is first wound on the winding machine, and then the pressure is applied from above to impact, so as to test the pressure resistance and rupture resistance of the safety belt.

[0004] However, the safety belt wound on the roller is generally tested by friction. The existing winding machine generally fixes the safety belt at both ends of the winding roller during the test, but there are problems such as insufficient stress intensity of the fixing point. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a fastening structure for automobile safety belt rupture test to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A fastening structure for automobile safety belt rupture test, comprising a test frame, a tightening mechanism and a rotating tightening mechanism are arranged on the test frame, and the tightening mechanism is rotatably arranged on the test frame;

[0008] The tightening mechanism comprises a needle, the needle is used for piercing into the test safety belt, the rotating tightening mechanism comprises an outer cylinder, a through slot is uniformly formed on the shell of the outer cylinder, the needle is slidably connected with the outer cylinder, and the needle pierces into the test safety belt to increase the friction between the test safety belt and the surface of the outer cylinder.

[0009] The fastening structure for automobile safety belt rupture test as described above: the test frame is fixedly connected with a support, the tightening mechanism comprises an inner shaft, and the inner shaft is rotatably arranged on the support.

[0010] The fastening structure for automobile safety belt rupture test as described above: the tightening mechanism further comprises a rotating disc and a roller, the rotating disc is provided in plurality, the plurality of rotating discs are arranged on the circumferential surface of the inner shaft, the roller is arranged on the side surface of the bottom of the needle, an arc-shaped slot is formed in the rotating disc, the roller is rotatably arranged in the interior of the rotating disc, and the rotating disc and the roller are arranged in the interior of the outer cylinder.

[0011] The fastening structure of the automobile safety belt breaking test as described above: the rotating mechanism further comprises a worm wheel and a worm, the worm wheel is arranged at one end of the outer cylinder, the worm and the worm wheel are engaged, and the worm is rotatably arranged on the test frame.

[0012] The fastening structure of the automobile safety belt breaking test as described above: a sleeve is further arranged on the inner shaft, and the inner wall of the sleeve is slidably connected with a limiting shaft.

[0013] The fastening structure of the automobile safety belt breaking test as described above: a spring is arranged on the inner wall of the sleeve, one end of the spring is in abutment with the inner wall of the sleeve, and the other end of the spring is in abutment with the limiting shaft.

[0014] The fastening structure of the automobile safety belt breaking test as described above: a limiting groove is arranged on the support, and the support is matched with the limiting shaft.

[0015] Compared with the prior art, the fastening structure of the automobile safety belt breaking test has the beneficial effects that: the fastening structure of the automobile safety belt breaking test is provided with the cooperation of the tightening mechanism and the rotating mechanism, the needle is driven into the test safety belt by the tightening mechanism, so that the safety belt cannot be separated from the outer cylinder due to the application of external force, at this time, the needle only enters the safety belt, and then the outer cylinder is further rotated to drive the needle to enter the test safety belt deeper, and at the same time, the outer cylinder on the opposite side is rotated in the opposite direction, so that the safety belt on the outer cylinder is further tightened, so that the safety belt is normally tested by external force.

[0016] The fastening structure of the automobile safety belt breaking test is further provided with a limiting structure on the support to prevent the inner shaft from rotating while the outer cylinder is rotating, so that the outer cylinder tightens the safety belt. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structural schematic view of the fastening structure of the automobile safety belt breaking test.

[0018] Figure 2 It is another positional structural schematic view of the fastening structure of the automobile safety belt breaking test.

[0019] Figure 3 It is a structural schematic view of the tightening mechanism of the fastening structure of the automobile safety belt breaking test.

[0020] Figure 4 It is a structural schematic view of the limiting structure of the fastening structure of the automobile safety belt breaking test.

[0021] Figure 5 It is a structural schematic view of the outer cylinder of the fastening structure of the automobile safety belt breaking test.

[0022] In the figure: 1, test frame; 2, support; 201, limiting groove; 3, outer cylinder; 301, through groove; 4, inner shaft; 5, rotating disc; 501, arc-shaped groove; 6, roller; 7, needle; 8, worm; 9, worm; 10, sleeve; 11, limiting shaft; 12, spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Please refer to Figures 1-5 As an embodiment of the utility model, the fastening structure for the automobile safety belt breaking test comprises a test frame 1, a needle tightening mechanism and a rotating tightening mechanism are arranged on the test frame 1, the needle tightening mechanism is rotatably arranged on the test frame 1;

[0025] The needle tightening mechanism comprises a needle 7, the needle 7 is used for being inserted into the test safety belt, the rotating tightening mechanism comprises an outer cylinder 3, through grooves 301 are uniformly arranged on the shell of the outer cylinder 3, the needle 7 is slidably connected with the outer cylinder 3, and the needle 7 is inserted into the test safety belt to increase the friction force between the test safety belt and the surface of the outer cylinder 3.

[0026] In the embodiment, the needle tightening mechanism and the rotating tightening mechanism are arranged in cooperation, the needle 7 is driven by the needle tightening mechanism first, so that the needle 7 is inserted into the test safety belt, so that the safety belt cannot be separated from the outer cylinder 3 due to the application of external force (a machine that impacts downward can be arranged above the test frame 1 to detect the strength of the safety belt), at this time, the needle 7 is only inserted into the safety belt, and then the outer cylinder 3 is further rotated to drive the needle 7 to be inserted into the test safety belt deeper, and at the same time, the outer cylinder 3 on the two sides is rotated in opposite directions, so that the safety belt on the outer cylinder 3 is further tightened, so that the safety belt is normally tested by external force.

[0027] As a further scheme of the utility model, the test frame 1 is fixedly connected with a support 2, the needle tightening mechanism comprises an inner shaft 4, and the inner shaft 4 is rotatably arranged on the support 2.

[0028] In the embodiment, the support 2 is arranged on the test frame 1, and the inner shaft 4 is arranged on the support 2, so that the inner shaft 4 can be rotated on the support 2 to drive the needle tightening mechanism.

[0029] As a further scheme of the utility model, the tightening mechanism further comprises a rotating disc 5 and a roller 6, the rotating disc 5 is provided in plurality, the plurality of rotating discs 5 are all arranged on the peripheral surface of the inner shaft 4, the roller 6 is arranged on the side surface of the bottom of the needle 7, the rotating disc 5 is provided with an arc-shaped groove 501, and the roller 6 is arranged inside the rotating disc 5, and the rotating disc 5 and the roller 6 are all arranged inside the outer cylinder 3.

[0030] In the embodiment, the inner shaft 4 is first rotated, all rotating discs 5 are driven to rotate by the inner shaft 4, the rotating disc 5 can drive the needle 7 to rotate outward by the arc-shaped groove 501, that is, the needle 7 is inserted into the safety belt wound on the surface of the outer cylinder 3 (from the right side of the figure, the counterclockwise direction is shown). Figure 1 When the needle 7 is inserted into the safety belt, the outer cylinder 3 is then rotated, the needle 7 is further expanded outward, that is, the needle 7 is further inserted into the safety belt, thereby preventing the safety belt from falling off the outer cylinder 3, and the safety belt wound on the outer cylinder 3 is tightened in the opposite direction due to the rotation of the outer cylinder 3 on both sides, thereby better receiving the external pressure for testing. Figure 1 When the needle 7 is inserted into the safety belt, the outer cylinder 3 is then rotated, the needle 7 is further expanded outward, that is, the needle 7 is further inserted into the safety belt, thereby preventing the safety belt from falling off the outer cylinder 3, and the safety belt wound on the outer cylinder 3 is tightened in the opposite direction due to the rotation of the outer cylinder 3 on both sides, thereby better receiving the external pressure for testing.

[0031] As a further scheme of the utility model, the tightening mechanism further comprises a worm wheel 8 and a worm 9, the worm wheel 8 is arranged at one end of the outer cylinder 3, the worm 9 is engaged with the worm wheel 8, and the worm 9 is rotatably arranged on the testing frame 1.

[0032] In the embodiment, the outer cylinder 3 is driven to rotate by the worm 9, thereby driving the outer cylinder 3 to rotate by the worm wheel 8, and the worm 9 and the worm wheel 8 have one-way transmission, thereby locking the outer cylinder 3 after rotation, preventing the outer cylinder 3 from rotating back, and keeping the safety belt on the outer cylinder 3 in a state of being tightened.

[0033] As a further scheme of the utility model, the inner shaft 4 is further provided with a sleeve 10, and the inner wall of the sleeve 10 is slidably connected with a limiting shaft 11.

[0034] In the embodiment, the sleeve 10 is arranged on the inner shaft 4, and the limiting shaft 11 is arranged inside the sleeve 10 and can slide in the sleeve 10.

[0035] As a further scheme of the utility model, the inner wall of the sleeve 10 is provided with a spring 12, one end of the spring 12 abuts against the inner wall of the sleeve 10, and the other end of the spring 12 abuts against the limiting shaft 11.

[0036] As a further scheme of the utility model, the support 2 is provided with a limiting groove 201, and the support 2 cooperates with the limiting shaft 11.

[0037] In this embodiment, in combination with the above two technical solutions, the spring 12 is installed inside the sleeve 10, and the limiting shaft 11 can extrude the spring 12 inside the sleeve 10. In the initial state, one end of the limiting shaft 11 extrudes the spring 12, and the other end is in contact with the surface of the support 2. When the inner shaft 4 rotates, the sleeve 10 is also driven to rotate, so that one end of the limiting shaft 11 is in contact with the limiting groove 201, so that the limiting shaft 11 is quickly inserted into the limiting groove 201 under the restoring force of the spring 12, so that the outer cylinder 3 is rotated, and the inner shaft 4 is locked.

[0038] The above embodiments are exemplary but not restrictive, and therefore the technical solutions of the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application.

Claims

1. A fastening structure for a car seatbelt breakage test, characterized in that, The fastening structure of the automobile safety belt breaking test comprises a test frame (1) provided with a tightening mechanism and a rotating tightening mechanism, the tightening mechanism is rotationally arranged on the test frame (1); The tightening mechanism comprises a needle (7) for piercing into the test safety belt, the rotating tightening mechanism comprises an outer cylinder (3), the shell of the outer cylinder (3) is uniformly provided with a through slot (301), the needle (7) is in sliding connection with the outer cylinder (3), and the needle (7) pierces into the test safety belt to increase the friction force between the test safety belt and the surface of the outer cylinder (3).

2. The fastening structure for a seat belt break test of an automobile according to claim 1, wherein The test frame (1) is fixedly connected with a support (2), the tightening mechanism comprises an inner shaft (4) rotationally arranged on the support (2).

3. The fastening structure for a seat belt break test of an automobile according to claim 2, wherein The tightening mechanism further comprises a rotating disc (5) and a roller (6), the rotating disc (5) is provided in plurality, the plurality of rotating discs (5) are arranged on the circumferential surface of the inner shaft (4), the roller (6) is arranged on the side surface of the bottom of the needle (7), the rotating disc (5) is provided with an arc-shaped slot (501), the roller (6) is rotationally arranged in the rotating disc (5), and the rotating disc (5) and the roller (6) are arranged in the outer cylinder (3).

4. The fastening structure for a seat belt break test of an automobile according to claim 1, wherein The rotating tightening mechanism further comprises a worm wheel (8) and a worm (9), the worm wheel (8) is arranged at one end of the outer cylinder (3), the worm (9) is in meshing connection with the worm wheel (8), and the worm (9) is rotationally arranged on the test frame (1).

5. The fastening structure for a seat belt break test of an automobile according to claim 2, wherein The inner shaft (4) is further provided with a sleeve (10), and the inner wall of the sleeve (10) is in sliding connection with a limiting shaft (11).

6. The fastening structure for a seat belt break test of an automobile according to claim 5, wherein The inner wall of the sleeve (10) is provided with a spring (12), one end of the spring (12) is in abutment with the inner wall of the sleeve (10), and the other end of the spring (12) is in abutment with the limiting shaft (11).

7. The fastening structure for a seat belt break test of an automobile according to claim 5, wherein The support (2) is provided with a limiting groove (201), and the support (2) is in cooperation with the limiting shaft (11).

Images