Checking fixture for assembling depth of bowl-shaped plug
By designing a gauge for measuring the assembly depth of the cup-shaped plug, and using a pressure sensor and a sound-activated flashlight to alert the operator, combined with an altimeter to measure the assembly depth, the problem of low accuracy of traditional gauges is solved, and efficient and accurate cup-shaped plug assembly is achieved.
Patent Information
- Application Number
- CN202512046259.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-04-17
AI Technical Summary
Existing gauges for measuring the assembly depth of cup-shaped plugs cannot accurately measure the assembly depth, leading to sealing and structural stability issues. Furthermore, traditional gauges are not very accurate.
A gauge for measuring the assembly depth of a bowl-shaped plug was designed, comprising a base plate, a vertical plate, a T-block, a sliding rod, a pressure sensor, and a sound-activated flashlight. The pressure sensor feeds back information to the host computer, the sound-activated flashlight prompts the operator to reach the designated position, and the assembly depth is measured by an altimeter.
It improves the accuracy and efficiency of cup-shaped plug assembly, ensures that the assembly depth meets the standard, and extends the service life of the inspection tool.
Smart Images

Figure CN121876887A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of depth gauge technology, specifically to a gauge for measuring the depth of a bowl-shaped plug assembly. Background Technology
[0002] Some automotive die-cast parts require the assembly of cup-shaped plugs during production, such as the tube end of a thermostat base, to seal oil or water passages. Specialized tooling is needed during assembly to ensure precision. Improper assembly, i.e., insufficient assembly depth, can increase sealing aging and leakage risk. Furthermore, the cup-shaped plug is prone to loosening and falling off in engine vibration environments. Insufficient depth reduces the clamping force of the interference fit, causing the cup-shaped plug to be pushed out by fluid pressure or vibration. Conversely, excessive assembly depth can lead to permanent deformation of the sealing structure and may even crack the metal around the base hole. Aluminum alloy valve bodies are particularly prone to micro-cracks due to expansion stress, which can expand into structural damage over time. Therefore, the assembly depth of the cup-shaped plug needs to be measured using specialized gauges to prevent system failures caused by the cup-shaped plug's inability to function properly.
[0003] However, existing gauges for measuring the assembly depth of cup-shaped plugs have the following problems during use: the assembly depth of traditional cup-shaped plugs is not easy to check, making it impossible to know whether the assembly is proper, and the accuracy is not high. Summary of the Invention
[0004] The purpose of this invention is to provide a gauge for measuring the assembly depth of a cup-shaped plug, so as to solve the related problems mentioned in the background art.
[0005] To solve the above technical problems, the present invention provides the following technical solution: a gauge for measuring the assembly depth of a bowl-shaped plug, comprising a base plate one, a base plate two, and a T-block. The base plate two is mounted on the top of the base plate one, and a vertical plate is mounted on the top of the base plate two. A T-block is mounted on one side of the vertical plate, and a height gauge is mounted on one side of the T-block. A positioning screw is provided on the inner wall of the T-block. A sliding rod penetrating the vertical plate is provided inside the T-block, and the outer wall of the sliding rod is connected to one end of the positioning screw. A groove is opened at the top of the base plate two, and a sliding pin is provided above the groove. A bowl-shaped plug body is placed above the sliding pin, and a deep hole is opened inside the bowl-shaped plug body.
[0006] As a preferred embodiment of the gauge for measuring the assembly depth of the bowl-shaped plug according to the present invention, a spring is provided at one end of the T-block.
[0007] As a preferred embodiment of the gauge for measuring the assembly depth of the bowl-shaped plug according to the present invention, a sound-activated flashlight is provided above the second base plate.
[0008] As a preferred embodiment of the gauge for measuring the assembly depth of the bowl-shaped plug according to the present invention, a pressure sensor is provided on one side of the slide groove, the output end of the pressure sensor is electrically connected to an external host computer via a wire, and the output end of the external host computer is electrically connected to the input end of the sound-activated flash lamp via a wire.
[0009] As a preferred embodiment of the gauge for measuring the assembly depth of the bowl-shaped plug according to the present invention, the upright plate is provided with a first clearance hole and a second clearance hole on one side, and the inner walls of the first clearance hole and the second clearance hole are adapted to the outer wall of the bowl-shaped plug body.
[0010] As a preferred embodiment of the cup-shaped plug assembly depth gauge of the present invention, the outer walls of the upright plate and the bottom plate are made of fiberglass material, and wear-resistant blocks are provided on the outside of the fiberglass.
[0011] The beneficial effects of the cup-shaped plug assembly depth measuring device of the present invention are as follows: 1. In this invention, the operator inserts two circular holes at opposite positions on the bowl-shaped plug body into the sliding pin, so that the bottom surface of the bowl-shaped plug body is in contact with the top surfaces of the base plate. Then, the bowl-shaped plug body is pushed towards the vertical plate until the sliding pin presses against the pressure sensor. The pressure sensor then feeds the information back to the host computer, which can activate a sound-activated flashlight to remind the operator that the designated position has been reached and to stop pushing. During the movement, the end of the sliding rod will contact the deep hole, and then the bowl-shaped plug body will slide into the T-block against the sliding pin. Finally, the distance moved by the sliding rod can be read by the height gauge. The distance from the end face of the sliding rod to the side of the vertical plate minus the height gauge reading is the assembly depth of the bowl-shaped plug. This allows for checking whether the assembly depth meets the standard, improving assembly efficiency and accuracy.
[0012] 2. This invention uses fiberglass in both the upright plate and the base plate, which gives it the advantages of being lightweight and high-strength, as well as being corrosion-resistant and usable for a long time. In addition, wear-resistant blocks are provided on the outside of the fiberglass to meet wear resistance requirements, thus extending its service life. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the right-side structure of the present invention; Figure 4 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the main cross-sectional structure of the bowl-shaped plug body of the present invention; Figure 6 This is a top view of the bowl-shaped plug body of the present invention; Figure 7 This is a schematic diagram of the left side of the bowl-shaped plug body of the present invention.
[0014] In the diagram: 1. Base plate one; 2. Base plate two; 201. Slide groove; 202. Sliding pin; 203. Sound-activated flash; 204. Pressure sensor; 3. Vertical plate; 301. Clearance hole one; 302. Clearance hole two; 4. Sliding rod; 5. T-block; 501. Spring; 502. Positioning screw; 6. Altimeter; 7. Bowl-shaped plug body; 8. Deep hole position. Detailed Implementation
[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] Example 1, such as Figure 1-2 As shown, the present invention provides a technical solution: a gauge for measuring the assembly depth of a bowl-shaped plug, comprising a base plate 1, a base plate 2, and a T-block 5. The base plate 2 is mounted on the top of the base plate 1, and a vertical plate 3 is mounted on the top of the base plate 1. A T-block 5 is mounted on one side of the vertical plate 3, and a height gauge 6 is mounted on one side of the T-block 5. The outer walls of the vertical plate 3 and the base plate 2 are made of fiberglass, and wear-resistant blocks are provided on the outside of the fiberglass. By using fiberglass in the vertical plate 3 and the base plate 2, it has the advantages of being lightweight and high-strength, and is corrosion-resistant, allowing for long-term use. In addition, the wear-resistant blocks on the outside of the fiberglass can meet the wear resistance requirements, ensuring long-term wear resistance and extending service life.
[0017] Example 2, as Figure 1-7As shown, the present invention provides a technical solution: a gauge for measuring the assembly depth of a bowl-shaped plug, including a positioning screw 502 on the inner wall of a T-block 5, a sliding rod 4 penetrating a vertical plate 3 inside the T-block 5, and the outer wall of the sliding rod 4 connected to one end of the positioning screw 502, a groove 201 opened at the top of the bottom plate 2, a sliding pin 202 above the groove 201, a bowl-shaped plug body 7 placed above the sliding pin 202, and a deep hole 8 opened inside the bowl-shaped plug body 7, a spring 501 at one end of the T-block 5, a sound-activated flash lamp 203 above the bottom plate 2, a pressure sensor 204 on one side of the groove 201, the output end of the pressure sensor 204 electrically connected to an external host computer via a wire, the output end of the external host computer electrically connected to the input end of the sound-activated flash lamp 203 via a wire, and an obstacle hole 301 and an obstacle hole 302 opened on one side of the vertical plate 3, and the obstacle hole 301... The inner wall of the 01 and the second clearance hole 302 is adapted to the outer wall of the bowl-shaped plug body 7. The operator inserts the two round holes at the opposite positions on the bowl-shaped plug body 7 into the sliding pin 202 respectively. In this way, the bottom surface of the bowl-shaped plug body 7 is in contact with the top surface of the second base plate 2. Then, the bowl-shaped plug body 7 is pushed towards the vertical plate 3 until the sliding pin 202 squeezes the pressure sensor 204. The pressure sensor 204 then feeds the information back to the host computer. The host computer can turn on the sound-activated flashlight 203 to remind the operator that the designated position has been reached and to push to stop. During the movement, the end of the sliding rod 4 will contact the deep hole position 8. Then, the bowl-shaped plug body 7 will push against the sliding pin 202 and slide into the T-block 5. Finally, the movement distance of the sliding rod 4 can be read by the height gauge 6. The distance from the end face of the sliding rod 4 to the side of the vertical plate 3 minus the height gauge 6 reading is the bowl-shaped plug assembly depth. Check whether the assembly depth meets the standard.
[0018] Working principle: First, connect the external power supply. The operator inserts the two round holes at opposite positions on the bowl-shaped plug body 7 into the sliding pin 202. This makes the bottom surface of the bowl-shaped plug body 7 fit against the top surface of the base plate 2. Then, push the bowl-shaped plug body 7 towards the vertical plate 3 until the sliding pin 202 presses against the pressure sensor 204. The pressure sensor 204 then feeds the information back to the host computer, which can turn on the sound-activated flashlight 203 to remind the operator that the designated position has been reached and to stop pushing. During the movement, the end of the sliding rod 4 will contact the deep hole position 8. Then, the bowl-shaped plug body 7 will slide against the sliding pin 202 into the T-block 5. Finally, the movement distance of the sliding rod 4 can be read by the height gauge 6. The distance from the end face of the sliding rod 4 to the side of the vertical plate 3 minus the height gauge 6 reading is the bowl-shaped plug assembly depth. Check whether the assembly depth meets the standard.
[0019] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.
Claims
1. A gauge for measuring the assembly depth of a bowl-shaped plug, comprising a base plate one (1), a base plate two (2), and a T-shaped block (5), characterized in that: The top of the first base plate (1) is equipped with a second base plate (2), and a vertical plate (3) is provided above the second base plate (2). A T-shaped block (5) is provided on one side of the vertical plate (3), and a height gauge (6) is provided on one side of the T-shaped block (5). A positioning screw (502) is provided on the inner wall of the T-shaped block (5). A sliding rod (4) that penetrates the vertical plate (3) is provided inside the T-shaped block (5), and the outer wall of the sliding rod (4) is connected to one end of the positioning screw (502). A sliding groove (201) is provided at the top of the second base plate (2), and a sliding pin (202) is provided above the sliding groove (201). A bowl-shaped plug body (7) is placed above the sliding pin (202), and a deep hole position (8) is provided inside the bowl-shaped plug body (7).
2. The gauge for measuring the assembly depth of a bowl-shaped plug according to claim 1, characterized in that: A spring (501) is provided at one end of the T-block (5).
3. The gauge for measuring the assembly depth of a bowl-shaped plug according to claim 1, characterized in that: A sound-activated flashlight (203) is provided above the base plate 2 (2).
4. The gauge for measuring the assembly depth of a bowl-shaped plug according to claim 2, characterized in that: A pressure sensor (204) is provided on one side of the slide (201). The output end of the pressure sensor (204) is electrically connected to an external host computer via a wire. The output end of the external host computer is electrically connected to the input end of the sound-activated flash lamp (203) via a wire.
5. A gauge for measuring the assembly depth of a bowl-shaped plug according to claim 1, characterized in that: The upright plate (3) has a first clearance hole (301) and a second clearance hole (302) on one side, and the inner walls of the first clearance hole (301) and the second clearance hole (302) are adapted to the outer wall of the bowl-shaped plug body (7).
6. The gauge for measuring the assembly depth of a bowl-shaped plug according to claim 1, characterized in that: The outer walls of the upright plate (3) and the bottom plate (2) are made of fiberglass material, and wear-resistant blocks are provided on the outside of the fiberglass.