Detection device for steering wheel air bag mounting bracket

Abstract

The utility model relates to the technical field of steering wheel air bag fitting detection, in particular to a detection device for a steering wheel air bag mounting bracket, which comprises a carrying platform, a displacement sensor and a positioning assembly. When the mounting bracket is placed, a side bracket of the mounting bracket presses a movable rack to move downwards to drive a movable gear to rotate; therefore, the abutting protrusion on the supporting shaft is driven to rotate to abut against the side support of the installation support. When the installation support is taken down, due to the fact that the movable rack is elastically arranged, after the side support is moved away, the movable rack resets, the supporting shaft is driven to rotate reversely, and therefore the abutting protrusion is driven to be away from the installation support, and limiting of the installation support is relieved. Therefore, the installation support can be limited, and the situation that the detection precision is affected by movement of the installation support is reduced. Meanwhile, compared with the prior art, the scheme adopted by the utility model can realize automatic limiting and unlocking only by adopting the action of placing and taking down the mounting bracket, the steps are simple, and the mounting bracket is convenient to assemble and disassemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to steering wheel air bag accessory detection technical field, concretely relates to a detection device for steering wheel air bag mounting support. BACKGROUND

[0002] Steering wheel air bag is one of important parts of automobile, and the mounting frame for placing steering wheel air bag needs to detect its size.

[0003] In prior art, contact type displacement sensor is usually used to detect the distance from mounting support to displacement sensor, but the detection device for steering wheel air bag mounting support in prior art lacks positioning for mounting support, so that mounting support is easily moved by contact type displacement sensor when detecting, which influences detection precision. Some detection devices control output end to resist mounting support through telescopic cylinder when detecting, and then control telescopic cylinder to retract after detection is completed, but this leads to inconvenient mounting and demounting of mounting support and complicated steps. UTILITY MODEL CONTENTS

[0004] The utility model solves technical scheme that technical problem thereof adopts: provide a detection device for steering wheel air bag mounting support, include:

[0005] The carrier is used for placing the mounting support.

[0006] The displacement sensor is provided with at least two, and the displacement sensor is used for detecting the distance from the mounting support to the displacement sensor.

[0007] The positioning assembly is provided with at least one set, the positioning assembly and the side support of mounting support correspond, the positioning assembly includes the support block arranged on the carrier, the movable rack elastically arranged on the support block and the movable gear meshed with the movable rack, the movable rack is located below the side support of mounting support and contacts the side support of mounting support, the movable gear is coaxially fixed with the support shaft, the support sleeve concentrically arranged with the support shaft is rotationally arranged on the support block, the abutting protrusion is fixedly arranged on the support shaft, the support shaft is located in the support sleeve, and the support shaft and the support sleeve are relatively fixed, the abutting groove matched with the abutting protrusion is arranged on the support sleeve, the abutting protrusion protrudes from the abutting groove, the abutting groove corresponds to the side support of mounting support, and the movable rack is used to drive the abutting protrusion to rotate to abut the side support of mounting support.

[0008] Furthermore, the support block is provided with a moving groove for the moving rack to move. The moving groove is provided with a guide shaft and a telescopic spring sleeved on the guide shaft. The moving rack is provided with a guide hole adapted to the guide shaft. The guide shaft passes through the guide hole. One end of the telescopic spring is connected to the moving groove, and the other end of the telescopic spring is connected to the moving rack.

[0009] Furthermore, the support shaft is provided with a mounting groove corresponding to the abutment protrusion.

[0010] Furthermore, the abutting surfaces of the abutting protrusion and the mounting bracket side bracket are arc-shaped surfaces.

[0011] Furthermore, the movable rack is provided with a contact block, which corresponds to the side bracket of the mounting bracket.

[0012] Furthermore, the positioning component also includes a positioning post disposed on the platform, the positioning post being farther away from the support block than the side bracket of the mounting bracket, and the positioning post abutting against the bottom end of the mounting bracket.

[0013] Furthermore, it also includes a support column disposed on the platform, the support column abutting against the front bracket of the mounting bracket.

[0014] Furthermore, the platform is tilted.

[0015] Furthermore, four displacement sensors are distributed around the circumference of the mounting bracket.

[0016] Furthermore, it also includes a movable cylinder, which is disposed on the platform. The output end of the movable cylinder is connected to the displacement sensor, and the movable cylinder is used to drive the displacement sensor to move.

[0017] The beneficial effects of this utility model are as follows: It provides a detection device for a steering wheel airbag mounting bracket, including a platform, a displacement sensor, and a positioning component. When the mounting bracket is placed, the side bracket of the mounting bracket presses down the moving rack, driving the moving gear to rotate, thereby causing the abutment protrusion on the support shaft to rotate and abut against the side bracket of the mounting bracket. When the mounting bracket is removed, since the moving rack is elastically set, after the side bracket is removed, the moving rack resets, driving the support shaft to rotate in the opposite direction, thereby causing the abutment protrusion of the abutment groove to rotate away from the side bracket, thus releasing the limitation on the mounting bracket. This achieves the limitation of the mounting bracket, reducing the impact on detection accuracy caused by the movement of the mounting bracket during detection. Furthermore, compared to the prior art which requires an additional drive of a telescopic cylinder to release the limitation of the mounting bracket when removing it, the solution adopted by this utility model only requires the action of placing and removing the mounting bracket to achieve automatic limitation and unlocking, making the steps simple and convenient for loading and unloading the mounting bracket. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] In the picture: Figure 1 This is a schematic diagram of the bottom structure of the mounting bracket involved in this utility model;

[0020] Figure 2 An overall structural diagram of a testing device for a steering wheel airbag mounting bracket provided in an embodiment of this utility model;

[0021] Figure 3 for Figure 2 A top view of the testing device for the steering wheel airbag mounting bracket shown;

[0022] Figure 4 for Figure 2 The diagram shows a three-dimensional structural view of the testing device for the steering wheel airbag mounting bracket.

[0023] Figure 5 for Figure 2 The diagram shows a three-dimensional structural representation of the positioning component.

[0024] Figure 6 for Figure 5 The diagram shows the three-dimensional structure of the positioning component after the support block is hidden.

[0025] Figure 7 for Figure 5 A top view of the positioning component structure shown;

[0026] Figure 8 for Figure 7 A sectional view along line AA.

[0027] Explanation of reference numerals in the attached drawings: 100, Detection device for steering wheel airbag mounting bracket; 10, Platform; 20, Displacement sensor; 30, Positioning assembly; 31, Support block; 311, Moving groove; 312, Guide shaft; 313, Telescopic spring one; 314, Support sleeve; 3141, Abutment groove; 32, Moving rack; 321, Contact block; 322, Guide hole; 33, Moving gear; 331, Support shaft; 3311, Abutment protrusion; 3312, Mounting groove; 34, Positioning column; 40, Frame; 50, Support column; 60, Moving cylinder; 200, Mounting bracket; 201, Side bracket; 202, Front bracket. Detailed Implementation

[0028] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Please refer to Figures 1-8 This utility model provides a detection device 100 for a steering wheel airbag mounting bracket, including a platform 10, a displacement sensor 20 and a positioning component 30, as well as a frame 40 for supporting the various components.

[0030] For details, please refer to Figure 1 As shown in the figure, the bottom of the mounting bracket 200 involved in this embodiment has side brackets 201 arranged in pairs along the length direction of the mounting bracket 200, and front brackets 202 arranged in pairs along the width direction of the mounting bracket 200.

[0031] The platform 10 is used to place the mounting bracket 200. Specifically, in this embodiment, the platform 10 is tilted to facilitate the placement and removal of the mounting bracket 200.

[0032] At least one displacement sensor 20 is provided, which is used to detect the distance from the mounting bracket 200 to the displacement sensor 20. Specifically, in this embodiment, four displacement sensors 20 are distributed around the circumference of the mounting bracket 200, and contact displacement sensors 20 are selected. The detection point of the displacement sensor 20 is located at a height higher than the side bracket 201 and the front bracket 202 of the mounting bracket 200. When testing the mounting bracket 200, a standard mounting bracket 200 is first placed on the platform 10. The displacement sensors 20 measure four points on the outline of the mounting bracket 200, and the data is recorded. Then, the mounting bracket 200 to be tested is placed on the platform 10, and the four points at the same position are measured. The data is then compared with that of the standard mounting bracket 200.

[0033] The positioning component 30 is provided in at least one set, and the positioning component 30 corresponds to the side bracket 201 of the mounting bracket 200. Specifically, the positioning component 30 is provided in two sets, corresponding to the two side brackets 201 of the mounting bracket 200 respectively. The positioning component 30 includes a support block 31 disposed on the platform 10, a movable rack 32 elastically disposed on the support block 31, and a movable gear 33 meshing with the movable rack 32. The movable rack 32 is located below the side brackets 201 of the mounting bracket 200 and is in contact with the side brackets 201 of the mounting bracket 200. Furthermore, the movable rack 32 is provided with a contact block 321, which corresponds to the side brackets 201 of the mounting bracket 200. The support block 31 is provided with a moving groove 311 for the moving rack 32 to move. The moving groove 311 is provided with a guide shaft 312 and a telescopic spring 313 sleeved on the guide shaft 312. The moving rack 32 is provided with a guide hole 322 that matches the guide shaft 312. The guide shaft 312 passes through the guide hole 322. One end of the telescopic spring 313 is fixedly connected to the moving groove 311, and the other end of the telescopic spring 313 is fixedly connected to the moving rack 32.

[0034] Specifically, in this embodiment, the movable rack 32, the guide shaft 312, and the movable groove 311 are all arranged along the thickness direction of the platform 10.

[0035] A moving gear 33 is coaxially fixed to a support shaft 331. A support sleeve 314, concentrically arranged with the support shaft 331, is rotatably mounted on the support block 31. A retaining protrusion 3311 is fixedly mounted on the support shaft 331. The support shaft 331 is located inside the support sleeve 314. The support shaft 331 and the support sleeve 314 are relatively fixed by the retaining protrusion 3311. The support sleeve 314 is provided with a retaining groove 3141 that matches the retaining protrusion 3311. The retaining protrusion 3311 protrudes from the retaining groove 3141. The retaining groove 3141 corresponds to the side bracket 201 of the mounting bracket 200. A moving rack 32 is used to drive the retaining protrusion 3311 to rotate until it abuts against the side bracket 201 of the mounting bracket 200. Specifically, in this embodiment, the support shaft 331 is provided with a mounting groove 3312 corresponding to the retaining protrusion 3311.

[0036] When the mounting bracket 200 is placed, the side bracket 201 of the mounting bracket 200 presses the moving rack 32 downward, driving the moving gear 33 to rotate. This causes the abutment protrusion 3311 on the support shaft 331 to rotate and abut against the side bracket 201 of the mounting bracket 200. When the mounting bracket 200 is removed, since the moving rack 32 is elastically set, after the side bracket 201 is removed, the moving rack 32 returns to its original position, driving the support shaft 331 to rotate in the opposite direction. This causes the abutment protrusion 3311 of the protruding abutment groove 3141 to rotate away from the side bracket 201 of the mounting bracket 200, thereby releasing the limitation on the mounting bracket 200. This achieves the limitation of the mounting bracket 200, reducing the impact on detection accuracy caused by the movement of the mounting bracket 200 during detection. Meanwhile, compared to the existing technology that requires additional drive of the telescopic cylinder to release the limit of the mounting bracket 200 when removing the mounting bracket 200, the solution adopted by this utility model only requires the action of placing and removing the mounting bracket 200 to achieve automatic limit and unlocking. The steps are simple and convenient for loading and unloading the mounting bracket 200.

[0037] Furthermore, the abutting surfaces of the abutting protrusion 3311 and the side bracket 201 of the mounting bracket 200 are arc-shaped to reduce damage to the side bracket 201 of the mounting bracket 200 during contact.

[0038] The positioning component 30 also includes a positioning post 34 disposed on the platform 10. The positioning post 34 is farther away from the support block 31 from the side bracket 201 of the mounting bracket 200, and the positioning post 34 abuts against the bottom end of the mounting bracket 200.

[0039] The testing device 100 for the steering wheel airbag mounting bracket also includes a support column 50 disposed on the platform 10, the support column 50 abutting against the front bracket 202 of the mounting bracket 200.

[0040] The detection device 100 for the steering wheel airbag mounting bracket also includes a moving cylinder 60, which is mounted on the platform 10. The output end of the moving cylinder 60 is connected to a displacement sensor 20, and the moving cylinder 60 is used to drive the displacement sensor 20 to move. Specifically, in this embodiment, the number of moving cylinders 60 corresponds to the number of displacement sensors 20.

Claims

1. A testing device for a steering wheel airbag mounting bracket, characterized in that, include: A platform for placing mounting brackets; A displacement sensor, wherein at least two displacement sensors are provided, and the displacement sensors are used to detect the distance from the mounting bracket to the displacement sensor; A positioning assembly is provided, comprising at least one set, which corresponds to the side support of the mounting bracket. The positioning assembly includes a support block disposed on the platform, a movable rack elastically disposed on the support block, and a movable gear meshing with the movable rack. The movable rack is located below and in contact with the side support of the mounting bracket. A support shaft is coaxially fixed to the movable gear. A support sleeve concentrically disposed on the support block and the support shaft is rotatably disposed thereon. A retaining protrusion is fixedly disposed on the support shaft. The support shaft is located inside the support sleeve, and the support shaft and the support sleeve are relatively fixed. The support sleeve has a retaining groove adapted to the retaining protrusion. The retaining protrusion protrudes from the retaining groove, which corresponds to the side support of the mounting bracket. The movable rack is used to drive the retaining protrusion to rotate and abut against the side support of the mounting bracket.

2. The detection device for steering wheel airbag mounting bracket according to claim 1, characterized in that: The support block is provided with a moving groove for the moving rack to move. The moving groove is provided with a guide shaft and a telescopic spring sleeved on the guide shaft. The moving rack is provided with a guide hole adapted to the guide shaft. The guide shaft passes through the guide hole. One end of the telescopic spring is connected to the moving groove, and the other end of the telescopic spring is connected to the moving rack.

3. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: The support shaft is provided with a mounting groove corresponding to the abutment protrusion.

4. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: The abutting surfaces of the abutting protrusion and the mounting bracket side bracket are arc-shaped surfaces.

5. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: The movable rack is provided with a contact block, which corresponds to the side bracket of the mounting bracket.

6. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: The positioning component further includes a positioning post disposed on the platform, the positioning post being farther away from the support block than the side bracket of the mounting bracket, and the positioning post abutting against the bottom end of the mounting bracket.

7. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: It also includes a support column disposed on the platform, the support column abutting against the front bracket of the mounting bracket.

8. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: The platform is tilted.

9. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: Four displacement sensors are distributed around the circumference of the mounting bracket.

10. The detection device for a steering wheel airbag mounting bracket according to claim 1, characterized in that: It also includes a movable cylinder, which is disposed on the platform. The output end of the movable cylinder is connected to the displacement sensor, and the movable cylinder is used to drive the displacement sensor to move.

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