Device for detecting position degree of P-gear shifting fork of automobile gearbox

By designing a device for testing the position of the P gear shift fork in an automotive transmission, the device utilizes the coordinated work of multiple components and the precise sliding of the guide rail to solve the problem of difficulty in aligning the reference in traditional testing methods, thereby achieving higher testing precision and accuracy.

CN223976576UActive Publication Date: 2026-03-06HEBEI GUANGDE PRECISION MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-09
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Traditional methods for detecting the position of the P-gear shift fork are difficult to align with, resulting in large measurement errors and affecting the stability and accuracy of the detection.

Method used

A device for inspecting the position of the P gear shift fork in an automotive transmission was designed. Through the coordinated work of multiple components, the device can comprehensively inspect the product body from different directions and locations. The device utilizes the precision sliding of the guide rail to reduce manufacturing errors and improve inspection accuracy.

Benefits of technology

It reduces the reference error, improves the accuracy and precision of the detection, avoids the problem of difficulty in aligning the reference when measuring directly, and ensures the stability of the measurement process.

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Abstract

The utility model relates to the technical field of automobile detection. The utility model discloses an automobile gearbox P-gear shifting fork position degree inspection device, which comprises a base and a supporting table fixed at the top of the base, and further comprises a longitudinal push clamp fixedly connected at the top of the supporting table, a reference pin fixedly connected at the bottom of the longitudinal push clamp, a reference sleeve fixedly connected at the top of the base, and a positioning pin fixedly connected at the bottom of the reference sleeve. According to the device, the longitudinal push clamp and the transverse push clamp are arranged to position the product body, the reference error is reduced, the detection accuracy is improved, the position degree of the product body is comprehensively detected from different directions and different parts through cooperative work of a plurality of parts such as the detection pin, and the detection accuracy is improved. Finally, whether the position degree of the automobile gearbox P-gear shifting fork product body is qualified or not is determined, and the problems that the reference is not easy to align and the measurement process is unstable during direct measurement are solved; through precise sliding of the guide rail, the manufacturing error of the detection tool is greatly reduced, and the detection precision is improved.
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Description

Technical Field

[0001] This utility model relates to the field of automotive testing technology, specifically a device for testing the position of the P gear shift fork in an automotive transmission. Background Technology

[0002] In the manufacturing process of automotive transmissions, the positional accuracy of the P-gear shift fork has a crucial impact on the transmission's performance and reliability. If the P-gear shift fork's position is off, it can lead to problems such as uneven gear engagement and unreliable locking when the vehicle is in P gear, severely affecting the user experience and driving safety.

[0003] Traditional methods for detecting the position of the P gear shift fork typically involve direct measurement. This method is difficult to align with the reference point, and the measurement process is easily affected by human factors and the measurement environment, resulting in unstable measurement results and large errors. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a device for testing the position of the P gear shift fork in an automotive transmission, which solves the problem that traditional testing methods are difficult to align with the reference point, resulting in large measurement errors.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for inspecting the position of a P-gear shift fork in an automotive transmission, comprising a base and a support platform fixed to the top of the base, and further comprising: a longitudinal push clamp fixedly connected to the top of the support platform, a reference pin fixedly connected to the bottom of the longitudinal push clamp, a reference sleeve fixedly connected to the top of the base, a transverse push clamp fixedly connected to the top of the base, a reference seat fixedly connected to the top of the base, a fixed seat fixedly connected to the top of the base, a detection recess slidably connected to the inner side of the fixed seat, a guide block fixedly connected to the outer side of the support platform, and a detection rod slidably connected to the inner side of the guide block. The detection recess is pushed along the inner side of the fixed seat to move towards the product body closer to the recess. If the detection recess moves smoothly, the dimensions of the relevant parts of the product body meet the requirements. Then, the detection rod is slid along the inner side of the guide block. If the detection rod can smoothly pass through the top of the product body, it indicates that the flatness dimension of the upper edge of the product body meets the requirements.

[0008] Preferably, the outer wall of the reference pin is slidably connected to the inner wall of the support platform, the reference pin is located directly above the reference sleeve, and the product body is movably installed between the reference pin and the reference sleeve. The outer side of the product body is in contact with the outer side of the reference seat. The product body is placed on the base so that it is located between the reference pin and the reference sleeve. Then, by operating the longitudinal push clamp, the reference pin is moved downward along the support platform to fix the product body in the longitudinal position.

[0009] Preferably, a limiting seat is fixedly connected to the top of the base, and a detection pin is slidably connected to the inner side of the limiting seat. Moving the detection pin along the inner side of the limiting seat moves it toward the side of the product body away from the concave block. If the detection pin moves smoothly, the relevant dimensions of the product body meet the requirements.

[0010] Preferably, a guide seat is fixedly connected to the top of the base, a detection push block is slidably connected to the inner side of the guide seat, and a push rod is fixedly connected to the outer side of the detection push block. The outer wall of the push rod is slidably connected to the inner wall of the guide seat. The guide seat is located between the fixed seat and the limiting seat. The push rod pushes the detection push block, and under the guidance of the guide seat, the push rod moves to the concave block on the surface of the product body. If the detection push block runs smoothly, the relevant dimensions of the product body meet the requirements.

[0011] (III) Beneficial Effects

[0012] This utility model provides a device for testing the position accuracy of the P gear shift fork in an automotive transmission. It has the following features:

[0013] Beneficial effects:

[0014] (i) The device uses a longitudinal push clamp to move the reference pin downward along the support platform to fix the product body in the longitudinal position. Then, it pushes the transverse push clamp and uses the transverse push clamp to press the product body against the reference seat. This reference is used for positioning, which reduces the reference error and improves the detection accuracy.

[0015] (II) This device, through the coordinated operation of multiple components such as detection pins, comprehensively detects the position of the product body from different directions and locations, and ultimately determines whether the position of the P gear shift fork of the automobile gearbox is qualified. This avoids the problems of difficulty in finding the reference and instability in the measurement process when measuring directly. The precision sliding of the guide rail greatly reduces the manufacturing error of the inspection tool itself and improves the accuracy of the detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the detection recess of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the detection rod of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the detection pin of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the detection pusher of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the product body of this utility model.

[0023] In the diagram: 1. Base; 2. Support platform; 3. Longitudinal push clamp; 4. Reference pin; 5. Reference sleeve; 6. Lateral push clamp; 7. Reference seat; 8. Fixed seat; 9. Detection recess; 10. Guide block; 11. Detection rod; 12. Limit seat; 13. Detection pin; 14. Guide seat; 15. Detection push block; 16. Push rod; 17. Product body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example: Please refer to Figure 1-7This utility model provides a technical solution: a device for testing the position of a P gear shift fork in an automotive transmission, comprising a base 1 and a support platform 2 fixed to the top of the base 1, and further comprising: a longitudinal push clamp 3 fixedly connected to the top of the support platform 2, a reference pin 4 fixedly connected to the bottom of the longitudinal push clamp 3, a reference sleeve 5 fixedly connected to the top of the base 1, a transverse push clamp 6 fixedly connected to the top of the base 1, a reference seat 7 fixedly connected to the top of the base 1, a fixed seat 8 fixedly connected to the top of the base 1, a detection recess 9 slidably connected to the inner side of the fixed seat 8, and a guide fixedly connected to the outer side of the support platform 2. The inner side of the guide block 10 is slidably connected to the detection rod 11. The outer wall of the reference pin 4 is slidably connected to the inner wall of the support platform 2. The reference pin 4 is located directly above the reference sleeve 5. The product body 17 is placed on the base 1, so that it is located between the reference pin 4 and the reference sleeve 5. Then, by operating the longitudinal push clamp 3, the reference pin 4 is moved downward along the support platform 2 to fix the product body 17 in the longitudinal position. Then, the transverse push clamp 6 is pushed, and the product body 17 is pressed against the reference base 7 by the transverse push clamp 6. Positioning is performed by this reference, which reduces the reference error and improves the detection accuracy.

[0026] A product body 17 is movably installed between the reference pin 4 and the reference sleeve 5. The outer side of the product body 17 contacts the outer side of the reference seat 7. A limit seat 12 is fixedly connected to the top of the base 1. A detection pin 13 is slidably connected to the inner side of the limit seat 12. A guide seat 14 is fixedly connected to the top of the base 1. A detection push block 15 is slidably connected to the inner side of the guide seat 14. A push rod 16 is fixedly connected to the outer side of the detection push block 15. The outer wall of the push rod 16 is slidably connected to the inner wall of the guide seat 14. The guide seat 14 is located between the fixed seat 8 and the limit seat 12. The push rod 16 pushes the detection push block 15. Under the guidance of the guide seat 14, the push rod 16 moves to the concave block on the surface of the product body 17. If the detection push block 15 moves smoothly, the relevant dimensions of the product body 17 meet the requirements. Then, the detection concave block 9 is pushed along the inner side of the fixed seat 8, causing it to move towards the side of the product body 17 closer to the concave block. If the detection concave block 9 moves smoothly, the relevant dimensions of the product body 17 meet the requirements. Then, slide the detection rod 11 along the inner side of the guide block 10. If the detection rod 11 can pass smoothly through the top of the product body 17, it indicates that the flatness of the upper edge of the product body 17 meets the requirements. Similarly, move the detection pin 13 along the inner side of the limit seat 12 to move it away from the concave block of the product body 17. If the detection pin 13 moves smoothly, the relevant dimensions of the product body 17 meet the requirements. Through the coordinated work of the above-mentioned components, the position of the product body 17 is comprehensively tested from different directions and different parts, and the position of the automotive gearbox P gear shift fork product body 17 is finally determined to be qualified. This avoids the problem of poor reference alignment and unstable measurement process when directly measuring. The precision sliding of the guide rail greatly reduces the manufacturing error of the inspection tool itself and improves the accuracy of the inspection.

[0027] Working principle: When in use, the product body 17 is placed on the base 1, so that it is positioned between the reference pin 4 and the reference sleeve 5. Then, by operating the longitudinal push clamp 3, the reference pin 4 is moved downward along the support platform 2 to fix the product body 17 in the longitudinal position. Then, the transverse push clamp 6 is pushed and the product body 17 is pressed against the reference base 7. Positioning is performed based on this reference, which reduces the reference error and improves the detection accuracy.

[0028] Pushing the detection push block 15 with the push rod 16, and guided by the guide seat 14, the push rod 16 moves to the concave block on the surface of the product body 17. If the detection push block 15 moves smoothly, the relevant dimensions of the product body 17 meet the requirements. Then, push the detection concave block 9 along the inner side of the fixed seat 8, so that it moves towards the side of the product body 17 closer to the concave block. If the detection concave block 9 moves smoothly, the relevant dimensions of the product body 17 meet the requirements. Then slide the detection rod 11 along the inner side of the guide block 10. The detection rod 11 is stepped. If the first step of the detection rod 11 can pass smoothly from the top of the product body 17, and the second step is blocked by the product body 17 when passing through, it means that the flatness dimension of the upper edge of the product body 17 meets the requirements.

[0029] Similarly, the detection pin 13 is then moved along the inner side of the limit seat 12, moving it towards the side of the product body 17 away from the concave block. If the detection pin 13 moves smoothly, the relevant dimensions of the product body 17 meet the requirements. Through the coordinated work of the above-mentioned multiple components, the position of the product body 17 is comprehensively tested from different directions and different parts, and the position of the automotive gearbox P gear shift fork product body 17 is finally determined to be qualified. This avoids the problem of poor reference alignment and unstable measurement process when directly measuring. The precision sliding of the guide rail greatly reduces the manufacturing error of the gauge itself and improves the accuracy of the test.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for checking the position of the P-gear shift fork of an automobile gearbox, comprising a base (1) and a support table (2) fixed to the top of the base (1), characterized in that, Also include: The top of the support table (2) is fixedly connected with longitudinal push tongs (3), the bottom of the longitudinal push tongs (3) is fixedly connected with a reference pin (4), the top of the base (1) is fixedly connected with a reference sleeve (5), the top of the base (1) is fixedly connected with transverse push tongs (6), the top of the base (1) is fixedly connected with a reference seat (7), the top of the base (1) is fixedly connected with a fixed seat (8), the inner side of the fixed seat (8) is slidably connected with a detection concave block (9), the outer side of the support table (2) is fixedly connected with a guide block (10), the inner side of the guide block (10) is slidably connected with a detection rod (11).

2. The device for checking the position of the P shift fork of an automobile gearbox according to claim 1, characterized in that: The outer wall of the reference pin (4) is slidably connected with the inner wall of the support table (2), and the reference pin (4) is located directly above the reference sleeve (5).

3. The device for checking the position of the P shift fork of an automobile transmission according to claim 1, characterized in that: The product body (17) is movably installed between the reference pin (4) and the reference sleeve (5), and the outer side of the product body (17) is in contact with the outer side of the reference seat (7).

4. The device for checking the position of the P shift fork of an automobile transmission according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a limiting seat (12), and the inner side of the limiting seat (12) is slidably connected with a detection pin (13).

5. The device for checking the position of the P-gear shift fork of an automobile gearbox according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a guide seat (14), and the inner side of the guide seat (14) is slidably connected with a detection push block (15), and the outer side of the detection push block (15) is fixedly connected with a push rod (16).

6. A device for checking the position of a P shift fork in a vehicle gearbox according to claim 5, characterized in that: The outer wall of the push rod (16) is slidably connected with the inner wall of the guide seat (14), and the guide seat (14) is located between the fixed seat (8) and the limiting seat (12).