Measuring tool and measuring method

Abstract

The present invention discloses a measuring tool and a testing method for measuring the distance between the mounting surface of a wheel speed sensor on a rear axle and a gear ring. The present invention limits the minimum distance between the mounting surface of the wheel speed sensor on the rear axle and the gear ring by a first component, and limits the maximum distance between the mounting surface of the wheel speed sensor on the rear axle and the gear ring by a second component. After the first component and the second component are inserted into the mounting hole of the rear axle wheel speed sensor, it can be known whether the distance range between the mounting surface and the gear ring is within the design range. The judgment is fast and accurate. In addition, the tool has a simple structure, occupies a small space, is easy to use, has high flexibility, and is widely applicable.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle assembly, and in particular to a measuring tool and a measuring method. Background Art

[0002] The wheel speed sensor has high requirements for the distance between the mounting surface and the ring gear on the rear axle, requiring strict control of this dimension during rear axle machining. Currently, fixed fixtures are inconvenient for measurement. Using a vernier caliper results in a long measurement cycle for each part, impacting production time. Laser ranging is also prohibitively expensive. Furthermore, in the final stage of the vehicle's assembly, with its numerous surrounding components and complex environment, measuring this gap is particularly challenging and inconvenient.

[0003] Therefore, it is necessary to strictly control the size of the mounting surface to the ring gear in the early stage to avoid installation interference or failure to recognize vehicle speed during final assembly, thereby reducing subsequent rework and repair risks.

[0004] Therefore, it is necessary to design a gap measurement tool that can cover the vast majority of current wheel rim structures, while being simple to operate, requiring less labor and at a low cost, in order to overcome the above-mentioned defects. Summary of the Invention

[0005] The object of the present invention is to provide a measuring tool and a measuring method that can quickly determine whether the distance between the wheel speed sensor mounting surface and the ring gear meets the design requirements.

[0006] The present invention provides a measuring tool for measuring the distance between the mounting surface of a wheel speed sensor on a rear axle and a ring gear, comprising a first component and a second component, each component comprising a stepped surface for abutting against the mounting surface, and each component further comprising a shaft extending outward from one side of the stepped surface, wherein the distance between the outer end surface of the shaft of the first component and the corresponding stepped surface is a first predetermined distance, and the distance between the outer end surface of the shaft of the second component and the corresponding stepped surface is a second predetermined distance;

[0007] The first predetermined distance is a minimum value between the mounting surface of the wheel speed sensor and the ring gear; the second predetermined distance is a maximum value between the mounting surface of the wheel speed sensor and the ring gear.

[0008] The present invention limits the minimum distance between the mounting surface of the wheel speed sensor on the rear axle and the ring gear by a first component, and limits the maximum distance between the mounting surface of the wheel speed sensor on the rear axle and the ring gear by a second component. After the first component and the second component are inserted into the mounting hole of the rear axle wheel speed sensor, it can be known whether the range of the distance between the mounting surface and the ring gear is within the design range. The judgment is fast and accurate. In addition, the tooling has a simple structure, occupies a small space, is easy to use, has high flexibility, and is widely applicable.

[0009] Optionally, both the first component and the second component include a main body, the step surface is located on the main body, and the shaft body is adjustable along the axial position of the main body to adjust the distance between the outer end surface of the shaft body and the corresponding step surface.

[0010] Optionally, the main body is a sleeve, and the shaft is a screw threadedly connected to the inside of the sleeve.

[0011] Optionally, the sleeve includes a first section and a second section connected axially, the outer diameter of the first section is larger than the outer diameter of the second section, and the connection position between the first section and the second section forms the step surface.

[0012] Optionally, the second section is circumferentially matched with the through hole of the mounting surface.

[0013] Optionally, the outer end surface of the shaft body is a plane.

[0014] Optionally, the shaft body is a hollow structure.

[0015] In addition, the present invention also provides a measuring method, using any of the above-mentioned measuring tools,

[0016] Install the first component and the second component in sequence to the wheel speed sensor mounting holes on the rear axle;

[0017] When the shaft of the first component passes through the wheel speed sensor mounting hole on the rear axle, the step surface of the first component can abut against the wheel speed sensor mounting surface on the rear axle, and after the shaft of the second component passes through the wheel speed sensor on the rear axle, the outer end surface of the shaft of the second component can abut against the ring gear, then the distance between the rear axle mounting surface and the ring gear meets the design requirements.

[0018] The testing method of the present invention is carried out based on the above-mentioned testing tooling, so the testing method also has the above-mentioned technical effects of the testing tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a first component in a measuring tool in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a second component in a measuring tool in an embodiment of the present invention;

[0021] Figure 3 for Figure 1 Schematic diagram of the relative position of the first assembly, the rear wheel and the ring gear when in use;

[0022] Figure 4 for Figure 2 Schematic diagram of the relative position of the second assembly, the rear wheel and the ring gear when in use;

[0023] Figure 5 This is a schematic diagram of the rear axle and ring gear components assembled with a wheel speed sensor according to the present invention.

[0024] in, Figures 1 to 5 The one-to-one correspondence between the reference numerals and component names is as follows:

[0025] 1-first assembly, 11-first sleeve, 111-first section, 112-second section, 113-first step surface, 12-first screw;

[0026] 2--second assembly, 21-second sleeve, 213-second step surface; 22-second screw;

[0027] 10-gear ring; 101-gear ring end face;

[0028] 20-rear axle; 201-mounting surface; 202-wheel speed sensor mounting hole;

[0029] 30-Wheel speed sensor. DETAILED DESCRIPTION

[0030] To address the technical issue raised in the background art regarding the difficulty of wheel speed sensors in detecting the distance from the mounting plane on the rear axle to the ring gear, the present inventors conducted extensive research and exploration, finding that current methods typically use measuring tools to first measure the distance from the mounting plane to the ring gear, and then determine whether that distance is within the required range. The present inventors take a unique approach, proposing a technical solution that can quickly determine whether the distance between the mounting plane on the rear axle and the ring gear meets the required range without requiring precise measurements of the distance between the mounting plane and the ring gear.

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Please refer to Figures 1 to 5 , Figure 1 A schematic diagram of a first component in a measuring tool in an embodiment of the present invention; Figure 2 A schematic diagram of a second component in a measuring tool in an embodiment of the present invention; Figure 3 for Figure 1 Schematic diagram of the relative position of the first assembly, the rear wheel and the ring gear when in use; Figure 4 for Figure 2 The relative position diagram of the second component, the rear wheel and the ring gear when in use is shown in FIG. Figure 5 This is a schematic diagram of the rear axle and ring gear components assembled with a wheel speed sensor according to the present invention.

[0033] The present invention provides a measuring tool for measuring the distance H between the mounting surface 201 of the wheel speed sensor 30 on the rear axle 20 and the ring gear 10, specifically for measuring the distance between the mounting surface 201 of the wheel speed sensor on the rear axle 20 and the end face 101 of the ring gear. The tool comprises a first component 1 and a second component 2, each of which includes a stepped surface for abutting against the mounting surface. Each component also includes a shaft extending outward from one side of the stepped surface. To clearly describe the technical solution, the stepped surface of the first component 1 is defined herein as a first stepped surface 113, and the stepped surface of the second component 2 as a second stepped surface 213. Of course, the first component 1 and the second component 2 must each have a main body with a stepped surface, i.e., the first component 1 includes a first main body, and the second component 2 includes a second main body, each of which has a first stepped surface 113 and a second stepped surface 213, respectively. The main body can have various forms, and a specific structure will be described later. The shaft of the first component 1 is defined as the first shaft, and the shaft of the second component 2 is defined as the second shaft.

[0034] In the present invention, the distance between the outer end surface of the shaft of the first component 1 and the corresponding step surface is a first predetermined distance H1, that is, the distance between the first step surface and the outer end surface of the first shaft is the first predetermined distance. The distance between the outer end surface of the shaft of the second component 2 and the corresponding step surface is a second predetermined distance H3, that is, the distance between the second step surface and the outer end surface of the second shaft is the second predetermined distance. Figure 1 and Figure 2 A specific example is given in which the lengths of the first shaft and the second shaft are both H2, but of course the lengths of the two can also be different.

[0035] The first predetermined distance H1 in the present invention is the minimum value between the mounting surface of the wheel speed sensor 30 and the ring gear 10 ; the second predetermined distance H3 is the maximum value between the mounting surface of the wheel speed sensor 30 and the ring gear 10 .

[0036] The first predetermined distance H1 and the second predetermined distance H3 are determined according to the specific wheel speed sensor 30 and the specific vehicle model. In a specific vehicle model: the theoretical distance from the mounting surface of the wheel speed sensor 30 to the ring gear 10 is 28.2 mm. According to the electromagnetic signal requirements of the wheel speed sensor 30 and the ring gear 10, the size from the mounting surface of the wheel speed sensor 30 to the ring gear 10 needs to be controlled within 28 to 28.48 mm (the tolerance of 0 to +0.48 mm is determined based on the detection distance of the wheel speed sensor 30 probe in the industry). That is to say, the first predetermined distance H1 is set to 28 mm, and the second predetermined distance H3 is set to 28.48 mm.

[0037] The mounting surface of the wheel speed sensor 30 is usually a plane, and accordingly the step surface is also a plane.

[0038] When using the measuring tool provided by the present invention to measure the distance between the mounting surface of the wheel speed sensor 30 and the ring gear 10, the following method can be used:

[0039] Install the first component 1 in the wheel speed sensor mounting hole 202 on the rear axle 20;

[0040] Install the second component 2 in the wheel speed sensor mounting hole 202 on the rear axle 20;

[0041] When the shaft of the first component 1 passes through the mounting hole of the wheel speed sensor 30 on the rear axle 20, the step surface (first step surface) of the first component 1 can abut against the mounting surface of the wheel speed sensor 30 on the rear axle 20, and after the shaft of the second component 2 passes through the wheel speed sensor 30 on the rear axle 20, the outer end surface of the shaft of the second component 2 can abut against the ring gear 10. At this time, the step surface of the second component 2 can abut against the mounting surface of the wheel speed sensor on the rear axle or there can be a gap a. Then the distance between the mounting surface of the rear axle 20 and the ring gear 10 meets the design requirements.

[0042] That is, at this time, the dimension between the mounting surface of the wheel speed sensor 30 and the ring gear 10 is between the first predetermined distance and the second predetermined distance, meeting the design requirements.

[0043] In addition to the above situations, the dimension between the mounting surface of the wheel speed sensor 30 and the ring gear 10 does not meet the design requirements. For example, if the first step surface of the first component 1 cannot contact the mounting surface of the wheel speed sensor 30, it means that the distance between the mounting surface of the wheel speed sensor 30 and the ring gear 10 is less than the first predetermined distance. If the second step surface of the second component 2 contacts the mounting surface of the wheel speed sensor 30, but the outer end surface of the shaft of the second component 2 cannot contact the ring gear 10, it means that the distance between the mounting surface of the wheel speed sensor 30 and the ring gear 10 is greater than the second predetermined distance. Both situations do not meet the design requirements.

[0044] From the above description, it can be seen that the present invention limits the minimum distance between the mounting surface of the wheel speed sensor 30 on the rear axle 20 and the ring gear 10 through the first component 1, and limits the maximum distance between the mounting surface of the wheel speed sensor 30 on the rear axle 20 and the ring gear 10 through the second component 2. After inserting the first component 1 and the second component 2 into the mounting hole of the wheel speed sensor 30 on the rear axle 20, it can be known whether the distance range between the mounting surface and the ring gear 10 is within the design range. The judgment is fast and accurate. In addition, the tooling structure is simple, occupies a small space, is easy to use, highly flexible, and has a wide range of applications.

[0045] In one specific example, the shaft body is adjustable in axial position along the main body to adjust the distance between the outer end surface of the shaft body and the corresponding stepped surface. Specifically, the axial position of the first shaft body relative to the first main body can be adjusted to adjust the first predetermined distance H1, and the axial position of the second shaft body relative to the second main body can be adjusted to adjust the second predetermined distance H3. This allows for measurement requirements of wheel speed sensors 30 with varying tolerances, significantly enhancing operational flexibility.

[0046] The shaft can move continuously relative to the main body, and of course it can also move intermittently.

[0047] In one specific example, the main body is a sleeve, and the shaft is a screw threadedly connected to the interior of the sleeve. Specifically, the first component 1 includes a first sleeve 11 and a first screw 12, wherein the first sleeve 11 is the mounting body for the first screw 12, and the first screw 12 is threadedly connected to the first sleeve 11. That is, the first sleeve 11 is provided with an internal thread, and the first screw 12 is provided with an external thread that is threadedly connected to the internal thread. Similarly, the second component 2 includes a second sleeve 21 and a second screw 22, and the second sleeve 21 is threadedly connected to the second screw 33.

[0048] The threaded connection structure is simple and can realize the connected movement of the screw along the axial direction.

[0049] Specifically, the sleeve includes an axially connected first and second sections. The outer diameter of the first section is larger than that of the second section, and the connection between the first and second sections forms the stepped surface. The second section circumferentially mates with the through hole. Taking the first sleeve as an example, the first sleeve includes a first section 111 and a second section 112, whose different diameters form a first stepped surface 113. The structure of the second sleeve is substantially the same as that of the first sleeve, and the figure does not indicate the reference numerals for the first and second sections of the second sleeve.

[0050] The outer end surface of the shaft body may be a plane.

[0051] The shaft body can be a hollow structure and is relatively light in weight.

[0052] The wheel speed sensor 30 mainly refers to an ABS (Ant il ock Brake System in English, Anti-lock Braking System in Chinese) wheel speed sensor 30 .

[0053] The testing method of the present invention is carried out based on the above-mentioned testing tooling, so the testing method also has the above-mentioned technical effects of the testing tooling.

[0054] The above is a detailed introduction to a measuring tool and a measuring method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A measuring tool for measuring the distance between the mounting surface of the wheel speed sensor on the rear axle and the gear ring, characterized in that: The invention comprises a first component and a second component, each component comprising a stepped surface for abutting against the mounting surface, and each component further comprising a shaft extending outward from one side of the stepped surface, wherein the distance between the outer end surface of the shaft of the first component and the corresponding stepped surface is a first predetermined distance, and the distance between the outer end surface of the shaft of the second component and the corresponding stepped surface is a second predetermined distance; The first predetermined distance is the minimum value between the mounting surface of the wheel speed sensor and the ring gear; the second predetermined distance is the maximum value between the mounting surface of the wheel speed sensor and the ring gear; the first component and the second component both include a main body, the step surface is located on the main body, and the shaft body is adjustable along the axial position of the main body to adjust the distance between the outer end surface of the shaft body and the corresponding step surface.

2. The measuring tool according to claim 1, characterized in that: The main body is a sleeve, and the shaft is a screw threadedly connected to the inside of the sleeve.

3. The measuring tool according to claim 2, characterized in that: The sleeve includes a first section and a second section connected axially, the outer diameter of the first section is larger than the outer diameter of the second section, and the connection position between the first section and the second section forms the step surface.

4. The measuring tool according to claim 3, characterized in that: The second section is circumferentially matched with the through hole of the mounting surface.

5. The measuring tool according to any one of claims 1 to 4, characterized in that: The outer end surface of the shaft body is a plane.

6. The measuring tool according to any one of claims 1 to 4, characterized in that: The shaft body is a hollow structure.

7. A measuring method using the measuring tool according to any one of claims 1 to 6, characterized in that: Install the first component and the second component in sequence to the wheel speed sensor mounting holes on the rear axle; When the shaft of the first component passes through the wheel speed sensor mounting hole on the rear axle, the step surface of the first component can abut against the wheel speed sensor mounting surface on the rear axle, and after the shaft of the second component passes through the wheel speed sensor mounting hole on the rear axle, the outer end surface of the shaft of the second component can abut against the ring gear. At this time, the step surface of the second component abuts against the wheel speed sensor mounting surface on the rear axle or there is a gap, and the distance between the rear axle mounting surface and the ring gear meets the design requirements.

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