Automobile horn air bag hairspring pressing force and pressing stroke detection equipment

Abstract

The utility model provides an automobile horn air bag hairspring pressing force and pressing stroke detection device comprising a rack, the rack is provided with a rotating disc, the rotating disc is provided with at least one positioning carrier, the positioning carrier comprises a supporting seat, the bottom of the supporting seat is provided with a first contact pin group, and the first contact pin group is provided with a second contact pin group. A jacking mechanism is arranged at the position, corresponding to the positioning carrier, of the lower portion of the rotary disc, the output end of the jacking mechanism is connected with a second pin set, and the jacking mechanism drives the second pin set to ascend to be electrically connected with the first pin set. According to the device, the positioning carrier is placed on the turntable, and the liftable second contact pin group is arranged at the lower part of the turntable, so that when the carrier rotates to a preset station, butt joint can be realized, and when a horn air bag hairspring assembly is pressed, a contact at the lower part of the assembly can be conducted with a conduction column and a power supply, so that a structure mounted on a steering wheel is simulated by pressing sound; and a pressure sensor and a displacement sensor which are arranged on the pressing device are matched, so that the pressing force and the stroke can be detected.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment, and in particular to a device for detecting the pressing force and pressing stroke of a car horn airbag clock spring. Background Technology

[0002] The horn is located in the center of the car's steering wheel. Pressing it activates the vehicle's power supply. This is primarily achieved through an component called the airbag clock spring, which acts like the electrical wiring in the center of the steering wheel. Pressing it connects its contacts to the power supply and the horn, producing a sound. After production, the airbag clock spring needs to be tested to measure the pressure and stroke required to activate it. Testing involves simulating the structure of the horn airbag clock spring assembly mounted on the car's steering wheel. This requires positioning the assembly and simulating manual horn activation by pressing it. Current technology typically uses a single-station testing method, which is inefficient. Furthermore, since other performance parameters need to be tested, material handling is required. A rotary testing station is preferred. However, rotary testing requires an external connection to simulate the vehicle's power supply and control the connection, making it difficult to implement. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a device for detecting the pressing force and pressing stroke of a car horn airbag spring, including a frame, on which are provided...

[0004] A turntable is provided, on which at least one positioning carrier is provided for placing the horn airbag spring to be tested. The positioning carrier includes a support base, at the bottom of which a first pin group is provided. A lifting mechanism is provided at the lower part of the turntable corresponding to the position of the positioning carrier. The output end of the lifting mechanism is connected to a second pin group. The lifting mechanism drives the second pin group to rise and electrically connect it to the first pin group. The support base is provided with an elastic common end and multiple sets of conductive posts. The elastic common end is connected to a power source. The conductive posts are electrically connected to the first pin group respectively. The aforementioned pin groups are all configured as pin blocks, with pins arranged on the pin blocks.

[0005] The pressing device is located above any positioning carrier. The pressing device is connected to a pressure sensor and a displacement sensor. The pressure sensor is used to detect the pressing pressure value, and the displacement sensor is used to detect the pressing stroke.

[0006] Preferably, it also includes a feeding device located on one side of the turntable. The feeding device includes a robotic arm and a conveyor belt. The output end of the robotic arm is connected to a gripper. The robotic arm picks up the horn airbag spring to be tested from the turntable and puts it onto the conveyor belt.

[0007] Preferably, the turntable is provided with four sets of positioning carriers, and a partition is provided between adjacent positioning carriers.

[0008] Preferably, the support base is provided with at least three sets of positioning blocks, each positioning block has an insertion hole, and the bottom of the positioning block has a side slot. The bottom of the support base is provided with a pulling cylinder, and the output end of the pulling cylinder is connected to a locking block. The locking block is located on the upper part of the support base, and the pulling cylinder pulls the locking block to insert it into the side slot.

[0009] Preferably, the power supply is a 12V power supply.

[0010] Preferably, the pressing device includes a robotic arm, the output end of which is connected to a pressing electric cylinder, the output end of which is connected to a pressing block, and a pressure sensor is connected between the electric cylinder and the pressing block.

[0011] Preferably, the cylinder body of the lowering electric cylinder is provided with a connecting plate, the displacement sensor is provided on the connecting plate, and a moving block is connected to the output shaft of the lowering electric cylinder, the moving block extending below the displacement sensor.

[0012] Preferably, the elastic common end includes a positioning cylinder located on the support base, a conductive pin passing through the positioning cylinder, the conductive pin passing through the positioning cylinder, a spring being provided between the conductive pin and the positioning cylinder, and the bottom of the conductive pin being connected to a power source through a connecting terminal.

[0013] The automotive horn airbag clock spring pressing force and pressing stroke detection device proposed in this utility model has the following beneficial effects: This device places the positioning carrier on the turntable, and sets a second pin group that can be raised and lowered at the bottom of the turntable. When the carrier rotates to the preset work position, it can be docked. The carrier is equipped with a conductive post and an elastic common end. When the horn airbag clock spring assembly is pressed, the contact at the bottom of the assembly can be connected with the conductive post and the power supply, realizing the pressing sound, which simulates the structure installed on the steering wheel. In addition, with the pressure sensor and displacement sensor set on the pressing device, the pressing force and stroke can be detected. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the internal three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the turntable connection of this utility model;

[0017] Figure 3 This is a schematic diagram of the positioning carrier of this utility model;

[0018] Figure 4 This is a schematic diagram of the positioning carrier and lifting mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the flexible common terminal of this utility model;

[0020] Figure 6 This is a schematic diagram of the pressing device of this utility model;

[0021] Figure 7 This is a schematic diagram of the feeding device of this utility model;

[0022] Figure 8 This is a schematic diagram of the overall external structure of this utility model;

[0023] The components are as follows: 1. Turntable; 2. Positioning carrier; 3. Support base; 4. First pin group; 5. Second pin group; 6. Lifting mechanism; 7. Elastic common end; 8. Conductor post; 9. Frame; 10. Pressing device; 11. Robotic arm; 12. Downward pressing cylinder; 13. Pressing block; 14. Pressure sensor; 15. Connecting plate; 16. Displacement sensor; 17. Moving block; 18. Unloading device; 19. Robotic arm; 20. Gripper; 21. Conveyor belt; 22. Partition; 23. Positioning block; 24. Insertion hole; 25. Side slot; 26. Pulling cylinder; 27. Locking block; 28. Conductor pin; 29. ​​Spring; 30. Positioning cylinder; 31. Connecting terminal. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] like Figure 1 As shown, this utility model proposes a device for detecting the pressing force and pressing stroke of a car horn airbag spring, including a frame 9, as... Figure 2 As shown, the frame 9 is equipped with a turntable 1, which is assembled from traditional profiles and the lower part of the turntable 1 is driven to rotate in sections by a reducer and other structures. The rotation angle is determined according to the number of workstations on the turntable 1. In this embodiment, four workstations can be set on the turntable 1, that is, four sets of positioning carriers 2 are evenly arranged. Of course, the number is not limited and can be set according to the requirements of the required detection.

[0026] The positioning carrier 2 is used to place the horn airbag spring to be tested; specifically: such as Figure 3 , Figure 4As shown, the positioning carrier 2 includes a support base 3. Firstly, positioning the carrier requires positioning the horn airbag clock spring. The support base 3 has at least three sets of positioning blocks 23, each with an insertion hole 24. The lower part of the horn airbag clock spring has three sets of fixing feet, each with a spring 29 and a groove on its side. The fixing feet of the horn airbag clock spring are inserted into the insertion holes 24, and the springs 29 press against the positioning blocks 23. Pressing the horn airbag clock spring assembly compresses the springs 29, thus lowering the position. Further positioning... The airbag hairspring has a side slot 25 at the bottom of the positioning block 23 and a pull cylinder 26 at the bottom of the support base 3. The output end of the pull cylinder 26 is connected to a locking block 27, which is located on the upper part of the support base 3 and is triangular in shape. The pull cylinder 26 pulls the locking block 27 and inserts it into the side slot. After the pull cylinder 26 pulls the locking block 27, the locking block 27 will be inserted into the side slot and pressed against the side slot of the fixed foot side wall, thereby positioning the entire airbag hairspring.

[0027] After positioning is completed, electrical connection testing is required. The support base 3 has a first pin group 4 at its bottom. The lower part of the turntable 1, corresponding to the positioning carrier 2, has a lifting mechanism 6, which can be a cylinder. The output end of the lifting mechanism 6 is connected to a second pin group 5. The lifting mechanism 6 drives the second pin group 5 to rise and electrically connect with the first pin group 4. Since the turntable 1 cannot be electrically connected during rotation, the second pin group 5 is provided. The second pin group 5 electrically connects to the control circuit board and the horn. The first pin group 4 is connected to the conductive post 8 on the support leg. The function of the conductive post 8 is to prevent airbag spring compression. When the airbag clock spring is pressed, the contacts on the clock spring make contact with the conductive post 8 and conduct electricity. At the same time, the elastic common terminal 7 is pressed. The elastic common terminal 7 is connected to an external 12V power supply. Of course, the power supply is connected to the circuit board and the horn to simulate the power situation in the car. In this way, after the airbag clock spring is pressed, the first pin group 4 is connected through the conductive post 8 (the connected wires are not shown). After the first pin group 4 and the second pin group 5 are plugged in, the electrical connection with the horn is realized, and the horn can be pressed to make it sound. This simulates the situation of pressing the horn in the car. At this time, the force and stroke of pressing can be recorded and the product can be tested to see if it meets the standard. Specifically, the pressing force and stroke are tested by the pressing device 10 set above the frame 9.

[0028] The aforementioned flexible common terminal 7 is for external power supply, such as... Figure 5As shown, to ensure that the airbag spring is pressed down and connected, it is designed as an elastic structure. The elastic common end 7 includes a positioning cylinder 30 located on the support base 3. A connecting pin 28 passes through the positioning cylinder 30. The connecting pin 28 passes through the positioning cylinder 30. A spring 29 is provided between the connecting pin 28 and the positioning cylinder 30. The bottom of the connecting pin 28 is connected to the power supply through a connecting terminal 31. The connecting pin 28 is connected to the power supply after contacting the contact point at the bottom of the airbag spring.

[0029] The pressing device 10 is located above any positioning carrier 2 and fixed to the frame 9, such as Figure 6 As shown, the system specifically includes a robotic arm 11, with a downward-pressing electric cylinder 12 connected to its output end. A pressing block 13 is connected to the output end of the downward-pressing electric cylinder 12. A pressure sensor 14 is connected between the electric cylinder and the pressing block 13. A connecting plate 15 is provided on the cylinder body of the downward-pressing electric cylinder 12, and a displacement sensor 16 is provided on the connecting plate 15. A moving block 17 is connected to the output shaft of the downward-pressing electric cylinder, extending below the displacement sensor 16. By moving the position of the downward-pressing electric cylinder 12 with the robotic arm 19, the pressing parameters of multiple points on the airbag's spiral spring can be tested. Using an electric cylinder allows for better control of extension and retraction. When the robotic arm 19 moves the electric cylinder to the detection position, the electric cylinder presses down until the horn sounds, and the value of the pressure sensor 14 is recorded by the system. The system for recording the value of the pressure sensor 14 is prior art and will not be repeated in this application. At the same time, the distance that the moving block 17 moves can be recorded by the displacement sensor 16, which is the stroke value of the downward press. The above method can quickly detect parameters. After the retrieval is completed, the lifting mechanism 6 at the bottom of the turntable 1 pulls back the second pin group 5 and separates it from the first pin group 4. The turntable 1 can then rotate to the next station. If other parameters need to be detected, they can be detected with the corresponding equipment until the turntable rotates to the end station, where the material can be unloaded.

[0030] The product is removed by the unloading device 18, such as Figure 7 As shown, the unloading device 18 includes a robotic arm 19 and a conveyor belt 21. The output end of the robotic arm 19 is connected to a gripper 20. The robotic arm 19 picks up the horn airbag spring to be tested from the turntable 1 and onto the conveyor belt 21. Before unloading, the pulling cylinder 26 at the bottom of the support base 3 drives the locking block 27 to extend from the fixed foot position of the airbag spring, which can be loosened. Then, the gripper 20 of the robotic arm 19 picks it up and unloads it onto the conveyor belt 21. If there are NG parts, an NG frame can be set on the upper part of the conveyor belt 21 to remove the NG parts.

[0031] like Figure 8 As shown, since the entire device is manually loaded at the first station, in order to improve the safety of manual operation, a partition 22 is provided between adjacent positioning carriers 2 to prevent personnel from accidentally putting their hands into the next station.

Claims

1. A device for detecting the pressing force and pressing stroke of a car horn airbag clock spring, comprising a frame, characterized in that, The frame is equipped with A turntable is provided, on which at least one positioning carrier is mounted for placing the horn airbag spring to be tested. The positioning carrier includes a support base, with a first pin group at its bottom. A lifting mechanism is located on the lower part of the turntable corresponding to the position of the positioning carrier. The output end of the lifting mechanism is connected to a second pin group. The lifting mechanism drives the second pin group to rise and electrically connect it to the first pin group. The support base has a flexible common terminal and multiple sets of conductive posts. The flexible common terminal is connected to a power source, and the conductive posts are electrically connected to the first pin group. The pressing device is located above any positioning carrier. The pressing device is connected to a pressure sensor and a displacement sensor. The pressure sensor is used to detect the pressing pressure value, and the displacement sensor is used to detect the pressing stroke.

2. The device for detecting the pressing force and pressing stroke of the car horn airbag clock spring according to claim 1, characterized in that, It also includes a feeding device located on one side of the turntable. The feeding device includes a robotic arm and a conveyor belt. The output end of the robotic arm is connected to a gripper. The robotic arm picks up the horn airbag spring to be tested from the turntable and puts it onto the conveyor belt.

3. The device for detecting the pressing force and pressing stroke of the car horn airbag clock spring according to claim 1, characterized in that, The turntable is equipped with four sets of positioning carriers, and there are partitions between adjacent positioning carriers.

4. The device for detecting the pressing force and pressing stroke of the car horn airbag clock spring according to claim 1, characterized in that, The support base is provided with at least three sets of positioning blocks, each positioning block has an insertion hole, and the bottom of the positioning block has a side slot. The bottom of the support base is provided with a pulling cylinder, and the output end of the pulling cylinder is connected to a locking block. The locking block is located on the upper part of the support base, and the pulling cylinder pulls the locking block to insert it into the side slot.

5. The device for detecting the pressing force and pressing stroke of the car horn airbag clock spring according to claim 1, characterized in that, The power supply is a 12V power supply.

6. The device for detecting the pressing force and pressing stroke of the car horn airbag clock spring according to claim 1, characterized in that, The pressing device includes a robotic arm, the output end of which is connected to a pressing electric cylinder, the output end of which is connected to a pressing block, and a pressure sensor is connected between the electric cylinder and the pressing block.

7. The detection device for the pressing force and pressing stroke of the car horn airbag clock spring according to claim 6, characterized in that, The cylinder body of the lowering electric cylinder is provided with a connecting plate, the displacement sensor is provided on the connecting plate, and a moving block is connected to the output shaft of the lowering electric cylinder, the moving block extending below the displacement sensor.

8. The device for detecting the pressing force and pressing stroke of the car horn airbag clock spring according to claim 1, characterized in that, The elastic common end includes a positioning cylinder located on the support base, a conductive pin passing through the positioning cylinder, the conductive pin passing through the positioning cylinder, a spring being provided between the conductive pin and the positioning cylinder, and the bottom of the conductive pin being connected to a power source through a connecting terminal.

Images