Multifunctional testing fixture for steering wheel

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By developing a multi-functional detection device for detecting the profile of the steering wheel horn cover and the height of the contact rivet, the problems of inconsistent height of the contact rivet and the gap surface difference of the horn cover in the steering wheel production are solved, and more efficient and accurate inspection is achieved, improving the operating and aesthetics of the automobile.

CN222617822UActive Publication Date: 2025-03-14JIANGSU FAVOUR AUTOMOTIVE NEW STUFF SCI TECH

View PDF 0 Cites 0 Cited by

Patent Information

Application Number: CN202420553340.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-03-21
Publication Date: 2025-03-14
Estimated Expiration: 2034-03-21

AI Technical Summary

Technical Problem

During the manufacturing process of steering wheel, inconsistent heights of contact rivets will affect the sensitivity of the horn response, resulting in the driver's evaluation of the car's operability. At the same time, the gap difference between the horn cover and the steering wheel body will also affect the horn working condition and the aesthetics of the steering wheel.

Method used

A multi-functional detection device for steering wheel is developed, which includes a pronunciation cover plate and a detection column. Through the pronunciation profile of the pronunciation cover plate and the position setting of the detection column, the horn cover profile of the steering wheel body and the height of the contact rivets can be quickly detected.

Benefits of technology

This device can improve the inspection efficiency and accuracy of steering wheel production, ensure the standardization of horn response sensitivity and the aesthetics of steering wheel, and thus improve the automotive operation and user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN222617822U_ABST

Patent Text Reader

Abstract

The utility model discloses a steering wheel multifunctional testing fixture, comprising a profiling cover plate, the bottom of the profiling cover plate is provided with a support column and a plurality of detection columns, the detection columns are connected with detection column connecting rods, the profiling cover plate is provided with detection column through holes for the detection column connecting rods to pass through, and the detection column connecting rods slide up and down along the detection column through holes. A detection compression spring is arranged at one end of the detection column connecting rod, the detection column connecting rod is sleeved with the detection compression spring, the detection compression spring is located between the detection column and the profiling cover plate, and a detection boss is arranged at the other end of the detection column connecting rod. Compared with the prior art, the special multifunctional testing fixture for the steering wheel not only can detect the height of a contact rivet, but also can detect the contour of a horn cover of a steering wheel body, is simple in structure and easy to operate, and improves the testing efficiency and accuracy of steering wheel production.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to a multifunctional inspection tool for automobile steering wheels, belonging to the technical field of automobile steering wheel inspection. Background Art

[0002] The steering wheel body is generally composed of a frame and a foam material outside the frame. The frame is used as a connecting part between the steering wheel and the steering column to achieve the transmission of steering torque. The speaker cover is connected to the frame through a corresponding structure to achieve the floating speaker ringing function; the rivets on the frame are contacts in the speaker circuit, and there are generally three of them. When one of the rivets contacts the speaker copper wire fixed on the DAB module, the speaker circuit is turned on and the speaker rings.

[0003] There is a preset working gap between the contact rivet and the speaker copper wire. If the installation height of the contact rivet on the frame is inconsistent, the working gap between the contact rivet and the speaker copper wire will also be different. The working gap will affect the sensitivity of the speaker response when pressing the speaker. The sensitivity of the speaker response will affect the driver's sense of lightness and heaviness, thereby affecting the driver's evaluation of the car's operability. For example, when the contact rivet height is lower than the standard, the working stroke from the speaker copper wire to the contact rivet will become larger, and the driver will feel that the pressing feel is heavier when pressing the horn. If the contact rivet height is too low, the speaker copper wire is not easy to contact the contact rivet, and the horn may not ring when pressing; if the contact rivet height is higher than the standard, the working stroke from the speaker copper wire to the contact rivet will become smaller, and the driver will feel that the pressing feel is lighter when pressing the horn. If the contact rivet height is too high, the contact speaker copper wire is very easy to contact the contact rivet, resulting in abnormal sound of the horn (non-pressing sound), especially when the car is on a bumpy road. Therefore, during the steering wheel manufacturing process, the height of the contact rivets needs to be inspected to control the horn pressing sensitivity.

[0004] The gap difference between the speaker cover and the steering wheel body will also affect the working condition of the speaker and the appearance of the steering wheel. If the gap difference is too small, the speaker cover will get stuck when pressed down, and in serious cases, it will affect the connection between the speaker copper wire and the contact rivet; if the gap difference is too large, the steering wheel will not look good. Therefore, during the steering wheel manufacturing process, it is also necessary to inspect the outline of the speaker cover of the steering wheel body. Utility Model Content

[0005] The purpose of the utility model is to develop a multifunctional detection device for a steering wheel, which can quickly and conveniently detect the contour of the horn cover of the steering wheel body and the height of the contact rivets, thereby improving the efficiency and accuracy of the inspection of the steering wheel production, which is of great significance for the quality assurance of the steering wheel.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0007] A multifunctional steering wheel inspection tool comprises a contoured cover plate, a support column and a plurality of detection columns are arranged at the bottom of the contoured cover plate, the detection columns are connected with detection column connecting rods, the contoured cover plate is provided with detection column through holes for the detection column connecting rods to pass through, the detection column connecting rods slide up and down along the detection column through holes, a detection compression spring is arranged at one end of the detection column connecting rod, the detection compression spring is sleeved on the detection column connecting rod and is located between the detection column and the contoured cover plate, and a detection boss is arranged at the other end of the detection column connecting rod.

[0008] The contour of the profiling cover is copied according to the contour of the horn cover of the steering wheel body, and the position of the detection column is set on the profiling cover according to the position of the contact rivet. When in use, the inspection fixture is placed at the horn cover installation slot of the steering wheel body, and the support column supports the profiling cover at the horn cover installation slot of the steering wheel body. The race gauge is inserted into the gap between the profiling cover and the horn cover contour to detect the gap between the profiling cover and the horn cover contour, so as to realize the detection of the horn cover contour.

[0009] When the inspection fixture is placed at the speaker cover mounting groove of the steering wheel body, the detection column contacts the contact rivet, and the contact rivet will push the detection column to slide up and down, thereby causing the detection boss to move up and down; after the inspection fixture is connected to the steering wheel body, the height of the contact rivet is detected by observing the height of the detection boss. Specifically, the end face where the top of the detection boss is located is the upper tolerance, the end face where the bottom of the detection boss is located is the lower tolerance, and the height between the top and bottom of the detection boss is the allowable error range for the height of the contact rivet; with the end face where the top of the profiling cover plate is located as a reference, observe whether the end face where the top of the profiling cover plate is located is between the top end face of the detection boss and the bottom end face of the detection boss. If it is located, the surface contact rivet meets the standard. If it is higher than the top end face of the detection boss or lower than the bottom end face of the detection boss, it means that the contact rivet does not meet the standard. The detection compression spring is used to push the detection column downward to reset for the next detection.

[0010] The detection boss is arranged on the top end of the detection column connecting rod.

[0011] In order to prevent the detection column connecting rod from being separated from the detection column through hole, a limiting protrusion is provided on the side wall of the detection column connecting rod.

[0012] A connecting rod sleeve is arranged in the through hole of the detection column, the connecting rod of the detection column slides up and down along the connecting rod sleeve, and the detection compression spring is located between the detection column and the connecting rod sleeve.

[0013] The connecting rod sleeve is provided with a limiting protrusion sleeve for the limiting protrusion to slide up and down.

[0014] An airbag block is arranged at the bottom of the contoured cover plate, and the airbag block is connected to the airbag column. The contoured cover plate is provided with an airbag column through-hole for the airbag column to pass through, and the airbag column slides up and down along the airbag column through-hole. The airbag column sleeve is provided with a column compression spring, and a spring block is arranged on the side wall of the airbag column, and the column compression spring is located between the contoured cover plate and the spring block.

[0015] When in use, first drive the airbag clamp column to slide downward (the compression spring of the clamp column is compressed), so that the airbag clamp block at the head end of the airbag clamp column protrudes and is exposed, so that the airbag clamp block can be placed at the airbag buckle of the steering wheel body; when the airbag clamp block is placed at the airbag buckle, the airbag clamp block is engaged with the airbag buckle, and then the airbag clamp column is released, and the compression spring of the clamp column is reset to make the contour cover plate close to the steering wheel body, so that the inspection tool is firmly supported on the steering wheel body, which is convenient for detecting the contour of the speaker cover and the height of the contact rivet. Because the airbag clamp block is engaged with the airbag buckle, the position of the spring block on the airbag clamp column is fixed, so the compression spring of the clamp column can push the contour cover plate close to the steering wheel body.

[0016] The contoured cover plate is provided with a spring accommodating groove for accommodating a clamping column compression spring.

[0017] In order to facilitate driving the support column to slide downward, an airbag clamping column pressure rod is connected to the top of the support column.

[0018] Compared with the prior art, the utility model provides a special multifunctional inspection tool for steering wheels, which can not only detect the height of contact rivets, but also detect the contour of the horn cover of the steering wheel body, has a simple structure, is easy to operate, and improves the inspection efficiency and accuracy of steering wheel production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] Figure 2 This is a structural schematic diagram of the utility model from another viewing angle.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0023] like Figure 1-3As shown, the multifunctional steering wheel inspection fixture comprises a contoured cover plate 1, wherein three support columns 2, four detection column units 3 and three airbag card block units 4 are arranged at the bottom of the contoured cover plate 1, the contour of the contoured cover plate 1 is contoured according to the contour of the horn cover of the steering wheel body, the positions of the four detection column units 3 are arranged on the contoured cover plate 1 according to the positions of the contact rivets of the steering wheel body, the detection column units 3 are used to detect the height of the contact rivets, the three airbag card block units 4 are arranged on the contoured cover plate 1 according to the airbag buckle positions of the steering wheel body, the airbag card block units 4 are used to enable the inspection fixture to clamp the airbag buckle of the steering wheel body, the three support columns 2 are distributed in a triangular shape on the contoured cover plate 1, and the triangularly distributed support columns can firmly support the contoured cover plate 1 on the steering wheel body, so as to detect the contour of the horn cover and the height of the contact rivets.

[0024] The detection column unit 3 includes a detection column 31 arranged at the bottom of the profiling cover plate 1, the upper end of the detection column 31 is connected to the detection column connecting rod 32, the diameter of the detection column 31 is larger than the diameter of the detection column connecting rod 32, the profiling cover plate 1 is provided with a detection column through hole for the detection column connecting rod 32 to pass through, a connecting rod sleeve 33 is arranged in the detection column through hole, the connecting rod sleeve 33 is sleeved on the outer periphery of the detection column connecting rod 32, the detection column connecting rod 32 slides up and down along the connecting rod sleeve 33, and a detection compression spring 34 is arranged at one end of the detection column connecting rod 32, and the detection compression spring 34 is arranged at one end of the detection column connecting rod 32. The spring 34 is sleeved on the detection column connecting rod 32 and is located between the detection column 31 and the connecting rod sleeve 33 to support the detection column 31 and the connecting rod sleeve 33. A limiting protrusion 35 is provided at the other end of the detection column connecting rod 32. The limiting protrusion 35 is located at the top end of the detection column connecting rod 32. The diameter of the limiting protrusion 35 is larger than the diameter of the detection column connecting rod 32 and the detection column through-hole. The connecting rod sleeve 33 includes a limiting protrusion sleeve 36. The limiting protrusion 35 slides up and down in the limiting protrusion sleeve 36. The top end of the limiting protrusion 35 is provided with a detection boss.

[0025] The airbag block unit 4 includes an airbag block 41 arranged at the bottom of the contoured cover plate 1, the airbag block 41 is connected to the airbag column 42, the contoured cover plate 1 is provided with an airbag column through-hole 43 for the airbag column 42 to pass through, the airbag column 42 slides up and down along the airbag column through-hole 43, the airbag column 42 is sleeved with a column compression spring 44, the airbag column through-hole 43 includes a spring accommodating groove 45 for accommodating the column compression spring 44, the diameter of the spring accommodating groove 45 is larger than the diameter of the airbag column through-hole 43, the column compression spring 44 is arranged in the spring accommodating groove 45, and a spring stopper 46 is provided on the side wall of the airbag column 42, the column compression spring 44 abuts against the spring stopper 46, and the spring stopper 46 restricts the column compression spring 44 in the spring accommodating groove 45.

[0026] An airbag clamping column pressing rod 47 is provided at the top end of the airbag clamping column 42 .

[0027] When in use, first drive the airbag clamping column pressure rod 47 to drive the airbag clamping column 42 to slide downward (the clamping column compression spring 44 is compressed), so that the airbag clamping block 41 at the head end of the airbag clamping column 42 protrudes and is exposed, so that the mobile inspection tool can place the airbag clamping block 41 at the corresponding airbag buckle of the steering wheel body;

[0028] When the airbag block 41 protrudes and is exposed, the inspection tool is placed at the speaker cover groove of the steering wheel body, and the support column 2 and the airbag block 41 are placed at the corresponding positions of the steering wheel body; when the airbag block 41 is placed at the airbag buckle, the airbag block 41 is engaged with the airbag buckle.

[0029] After the airbag block 41 and the airbag buckle are engaged, the airbag clamping column pressure rod 47 is released, and the clamping column compression spring 44 is reset to push the contoured cover plate 1, so that the contoured cover plate 1 is close to the steering wheel body, and then the contoured cover plate 1 is firmly connected to the steering wheel body.

[0030] After the contoured cover plate 1 is firmly fixed on the steering wheel body, a racing gauge is inserted into the gap between the contoured cover plate 1 and the speaker cover contour to detect the speaker cover contour.

[0031] When the inspection fixture is placed at the speaker cover mounting groove of the steering wheel body, the detection column 31 contacts the contact rivet, and the contact rivet will push the detection column 31 to slide up and down, thereby causing the detection boss to move up and down; after the contoured cover plate 1 is firmly fixed on the steering wheel body, the height of the contact rivet is detected by observing the height of the detection boss. Specifically, the end face where the top of the detection boss is located is the upper tolerance, the end face where the bottom of the detection boss is located is the lower tolerance, and the height between the top and bottom of the detection boss is the error range allowed for the height of the contact rivet; with the end face where the top of the limiting protrusion sleeve 36 is located as a reference, observe whether the end face where the top of the limiting protrusion sleeve 36 is located is between the top end face of the detection boss and the bottom end face of the detection boss. If it is located, the surface contact rivet meets the standard. If it is higher than the top end face of the detection boss or lower than the bottom end face of the detection boss, it means that the contact rivet does not meet the standard.

[0032] When the inspection tool is separated from the steering wheel body, the inspection compression spring 34 pushes the inspection column 31 to return downward so as to perform the next inspection.

[0033] The above embodiments do not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A multifunctional steering wheel inspection tool, characterized in that: It includes a contoured cover plate, a support column and a plurality of detection columns are arranged at the bottom of the contoured cover plate, the detection column is connected to a detection column connecting rod, the contoured cover plate is provided with a detection column through hole for the detection column connecting rod to pass through, the detection column connecting rod slides up and down along the detection column through hole, a detection compression spring is arranged at one end of the detection column connecting rod, the detection compression spring is sleeved on the detection column connecting rod and is located between the detection column and the contoured cover plate, and a detection boss is arranged at the other end of the detection column connecting rod.

2. A multifunctional steering wheel inspection tool according to claim 1, characterized in that: The detection boss is arranged on the top end of the detection column connecting rod.

3. The multifunctional steering wheel inspection tool according to claim 1, characterized in that: The side wall of the detection column connecting rod is provided with a limiting protrusion.

4. A multifunctional steering wheel inspection tool according to claim 1, characterized in that: A connecting rod sleeve is arranged in the through hole of the detection column, the connecting rod of the detection column slides up and down along the connecting rod sleeve, and the detection compression spring is located between the detection column and the connecting rod sleeve.

5. A multifunctional steering wheel inspection tool according to claim 4, characterized in that: The connecting rod sleeve is provided with a limiting protrusion sleeve for the limiting protrusion to slide up and down.

6. The multifunctional steering wheel inspection tool according to claim 1, characterized in that: An airbag block is arranged at the bottom of the contoured cover plate, and the airbag block is connected to the airbag column. The contoured cover plate is provided with an airbag column through-hole for the airbag column to pass through, and the airbag column slides up and down along the airbag column through-hole. The airbag column sleeve is provided with a column compression spring, and a spring block is arranged on the side wall of the airbag column, and the column compression spring is located between the contoured cover plate and the spring block.

7. A multifunctional steering wheel inspection tool according to claim 6, characterized in that: The contoured cover plate is provided with a spring accommodating groove for accommodating a clamping column compression spring.

8. The multifunctional steering wheel inspection tool according to claim 6, characterized in that: The top end of the support column is connected with an air bag clamping column pressure rod.