Bowl-shaped plug assembly depth measuring gauge

By designing a cup-shaped plug assembly depth measuring fixture for cylindrical and cap-shaped inspection pin components, the problem of unleveled datum surface in cup-shaped plug assembly depth measurement was solved, achieving rapid and accurate measurement results and improving inspection efficiency and accuracy.

CN223841114UActive Publication Date: 2026-01-27ARLINGTON AUTO PARTS (ANHUI) CO LTD
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Patent Information

Application Number
CN202520542353.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-26
Publication Date
2026-01-27
Estimated Expiration
2035-03-26

AI Technical Summary

Technical Problem

In the existing technology, the measurement of the assembly depth of the cup-shaped plug is subject to detection errors caused by the failure to level the reference surface, which affects the accuracy and efficiency of the measurement results.

Method used

A cup-shaped plug assembly depth measuring fixture was designed, comprising a cylindrical gauge pin component and a cap-shaped gauge pin component. By using the protrusions and tolerance grooves of the cylindrical gauge pin component, combined with the sleeve and folded edge of the cap-shaped gauge pin component, rapid reference surface positioning and measurement of the cup-shaped plug can be achieved.

Benefits of technology

It reduces detection errors caused by uneven reference surfaces, improves measurement stability and consistency, reduces reading time, and increases detection efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a bowl-shaped plug assembly depth measuring gauge, which belongs to the technical field of bowl-shaped plug press fitting gauges, and comprises a gauge structure, the gauge structure comprises a cylindrical gauge pin part and a cap-shaped gauge pin part, the cylindrical gauge pin part and the cap-shaped gauge pin part are movably connected, the front end of the cylindrical gauge pin part is provided with a convex block, and the convex block is connected with the cap-shaped gauge pin part. According to the utility model, the assembly depth of the bowl-shaped plug can be measured, the reference surface can be quickly found, the detection error caused by the fact that the reference surface is not leveled is reduced, the time loss caused by reading when a caliper is used for measurement is reduced at the same time, and the measurement accuracy is improved during measurement. Therefore, the stability and the consistency of measurement are ensured, and the working efficiency is improved.
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Description

Technical Field

[0001] This utility model mainly relates to the technical field of cup-shaped plug pressing gauges, specifically a cup-shaped plug assembly depth measuring gauge. Background Technology

[0002] A cup-shaped plug is a round, cup-shaped metal plug used in parts such as automotive engines. It is interference-fitted to the plug holes on the engine block or cylinder head and is usually sealed with sealant during installation. This sealant prevents leakage of coolant from the engine cooling system and oil from the lubrication system. For example, some cup-shaped plugs on the engine block are used to seal the water jacket, ensuring that coolant circulates within the jacket and does not leak into external engine parts or other non-cooling system components. Cup-shaped plugs in camshaft-related parts prevent oil leakage from the camshaft mounting holes and other locations.

[0003] During the press-fitting process of the cup-shaped plug, the fitting depth needs to be measured. The fitting depth directly affects its sealing effect. If the fitting is too shallow, the cup-shaped plug cannot fully contact the mounting hole wall, and during vehicle operation, the cup-shaped plug may detach due to the pressure of the internal coolant or engine oil, failing to form an effective seal and causing coolant or engine oil leakage. For example, in the engine block, the cup-shaped plug is used to seal the water jacket. If the fitting depth is insufficient, coolant may leak out, affecting the normal operation of the engine's cooling system and even potentially causing engine overheating. Conversely, if the fitting is too deep, the cup-shaped plug may excessively compress the sealing material, leading to deformation or... Damage can also affect sealing. Currently, the depth measurement of the cup-shaped plug and the mounting hole after pressing is generally done with calipers. Since the end face wall thickness of the cup-shaped plug is only 1mm and the end face after pressing will be uneven, if the reference surface is not properly established, the measuring jaws of the calipers may not be perpendicular to the measuring part of the cup-shaped plug when using calipers, resulting in deviation in the measurement direction. For example, when measuring the outer diameter of the cup-shaped plug at multiple depths, if the measuring jaws of the calipers are tilted, the measured size will be larger or smaller than the actual size. The detection error caused by the unleveled reference surface affects the accuracy of the measurement results and also increases the time loss caused by reading the measurement when using calipers. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. Specifically, this utility model provides a cup-shaped plug assembly depth measuring fixture to solve the technical problem mentioned in the background art, where cup-shaped plugs are usually circular and their surfaces have a certain curvature, making it easy for the reference surface to be uneven, resulting in detection errors.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A cup-shaped plug assembly depth measuring fixture includes a fixture structure, the fixture structure including a cylindrical fixture pin component and a cap-shaped fixture pin component, the cylindrical fixture pin component and the cap-shaped fixture pin component are movably connected, the front end of the cylindrical fixture pin component is provided with a protrusion, and the protrusion abuts against the pressing end face of the cup-shaped plug.

[0007] Furthermore, the side wall of the cylindrical gauge pin component is provided with a tolerance groove, and the width of the tolerance groove is 0.4mm.

[0008] Furthermore, the cap-shaped inspection pin component includes a sleeve portion and a folded edge portion, with the inner wall of the sleeve portion fitting against the outer wall of the cylindrical inspection pin component.

[0009] Furthermore, the sleeve portion is provided with a perforation, the diameter of which is 2.55mm-2.65mm.

[0010] Furthermore, the cross-sectional diameter of the cylindrical gauge pin component is 15.79mm-15.83mm.

[0011] Furthermore, the outer wall cross-sectional diameter of the sleeve portion is 22mm-22.2mm, and the inner wall cross-sectional diameter of the sleeve portion is 15.8mm-15.81mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a cylindrical gauge pin component, a protrusion, a tolerance groove, and a cap-shaped gauge pin component to measure the assembly depth of a cup-shaped plug. It allows for rapid identification of the reference surface, reducing detection errors caused by an uneven reference surface. It also reduces the time wasted reading when using calipers. During measurement, there is no deviation or shaking, ensuring measurement stability and consistency. Furthermore, the cap-shaped gauge pin component can move on the cylindrical gauge pin component, enabling rapid identification of the cup-shaped plug depth, reducing detection difficulty, saving detection time, and significantly improving personnel efficiency. The structure is simple, the cost is low, and it has practical value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cylindrical inspection pin component of this utility model;

[0017] Figure 3This is a schematic diagram of the structure of the cap-shaped inspection tool pin component of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the present invention.

[0019] In the diagram: 1. Fixture structure; 11. Cylindrical fixture pin component; 111. Protrusion; 112. Tolerance groove; 12. Hat-shaped fixture pin component; 121. Sleeve part; 122. Folded edge part; 13. Perforation. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Please refer to the appendix carefully. Figure 1-4 A cup-shaped plug assembly depth measuring fixture includes a fixture structure 1, wherein the fixture structure 1 includes a cylindrical fixture pin component 11 and a cap-shaped fixture pin component 12, which are movably connected. The front end of the cylindrical fixture pin component 11 is provided with a protrusion 111, and the protrusion 111 abuts against the pressing end face of the cup-shaped plug.

[0024] The above structure enables the measurement of the assembly depth of the cup-shaped plug, allowing for quick location of the reference surface and reducing detection errors caused by an uneven reference surface. It also reduces the time wasted when reading the measurement using calipers. During measurement, there is no offset or shaking, ensuring the stability and consistency of the measurement. The structure can move up and down, allowing for quick identification of the cup-shaped plug depth results, reducing the difficulty of detection, saving detection time, and greatly improving the work efficiency of personnel.

[0025] The specific operation is as follows: First, install the cap-shaped gauge pin component 12 onto the cylindrical gauge pin component 11. Then, using the mounting hole as the reference surface, during measurement, align the cap-shaped gauge pin component 12 with the mounting hole reference surface. Next, press the protrusion 111 of the cylindrical gauge pin component 11 against the pressing end face of the cup-shaped plug. Then, slide the protrusion 111 of the cylindrical gauge pin component 11 up and down to perform multi-position measurements. Then, observe whether the folded edge 122 of the cap-shaped gauge pin component 12 is within the tolerance groove 112. If it is determined to be within the tolerance groove 112, then the pressing depth of the product meets the drawing requirements.

[0026] Please refer to the appendix carefully. Figure 2 and attached Figure 3 The cylindrical gauge pin component 11 has a tolerance groove 112 on its side wall, and the width of the tolerance groove (112) is 0.4 mm. Through the tolerance groove 112, the assembly depth range of the cup-shaped plug is identified. The cap-shaped gauge pin component 12 includes a sleeve portion 121 and a folded edge portion 122. The inner wall of the sleeve portion 121 fits against the outer wall of the cylindrical gauge pin component 11. Through the folded edge portion 122, it is convenient to press against the edge of the cup-shaped plug, which facilitates subsequent reading. The sleeve portion 121 is provided with The device has a perforation 13 with a diameter of 2.55mm-2.65mm, which facilitates positioning and reading. The cylindrical inspection pin component 11 has a cross-sectional diameter of 15.79mm-15.83mm, the outer wall cross-sectional diameter of the sleeve portion 121 is 22mm-22.2mm, and the inner wall cross-sectional diameter of the sleeve portion 121 is 15.8mm-15.81mm, which ensures that the cap-shaped inspection pin component 12 and the cylindrical inspection pin component 11 slide in close contact.

[0027] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A cup-shaped plug assembly depth measuring fixture, comprising a fixture structure (1), characterized in that, The fixture structure (1) includes a cylindrical fixture pin component (11) and a cap-shaped fixture pin component (12). The cylindrical fixture pin component (11) and the cap-shaped fixture pin component (12) are movably connected. The front end of the cylindrical fixture pin component (11) is provided with a protrusion (111), and the protrusion (111) abuts against the press-fit end face of the cup-shaped plug.

2. The cup-shaped plug assembly depth measuring fixture according to claim 1, characterized in that, The cylindrical gauge pin component (11) has a tolerance groove (112) on its side wall, and the width of the tolerance groove (112) is 0.4 mm.

3. The cup-shaped plug assembly depth measuring fixture according to claim 1, characterized in that, The cap-shaped inspection pin component (12) includes a sleeve portion (121) and a folded edge portion (122), with the inner wall of the sleeve portion (121) fitting against the outer wall of the cylindrical inspection pin component (11).

4. The cup-shaped plug assembly depth measuring fixture according to claim 3, characterized in that, The sleeve portion (121) is provided with a through hole (13), the diameter of which is 2.55mm-2.65mm.

5. A cup-shaped plug assembly depth measuring fixture according to claim 3, characterized in that, The cross-sectional diameter of the cylindrical gauge pin component (11) is 15.79mm-15.83mm.

6. The cup-shaped plug assembly depth measuring fixture according to claim 3, characterized in that, The outer wall cross-sectional diameter of the sleeve part (121) is 22mm-22.2mm, and the inner wall cross-sectional diameter of the sleeve part (121) is 15.8mm-15.81mm.