Leakage-proof device

Abstract

The utility model relates to a leakage-proof device which comprises an attaching part used for attaching a workpiece and a detection part used for detecting a to-be-detected piece, the attaching part is arranged on one side of the detection part, the detection part comprises a spring telescopic piece and a pressure sensor, one end of the spring telescopic piece operably abuts against the to-be-detected piece, and the other end of the spring telescopic piece abuts against the to-be-detected piece. The other end of the spring telescopic piece is detachably connected to the pressure sensor. According to the leakage-proof device, the spring telescopic piece is tightly attached to the to-be-detected automobile part, the pressure sensor detects the contact pressure, and whether the automobile part is correctly installed in place or not can be accurately judged. By means of the design, subjectivity and uncertainty of manual detection are effectively avoided, accuracy and reliability of detection are improved, and powerful support is provided for quality control of the automobile manufacturing and assembling process.

Description

Technical Field

[0001] This application relates to the technical field of leak-proof devices, and in particular to a leak-proof device. Background Technology

[0002] In modern manufacturing and assembly processes, ensuring the correct installation of each component and part is crucial for guaranteeing the overall performance and reliability of a product. This is especially true in the manufacture of complex machinery and precision instruments, where the omission or incorrect installation of a critical component can lead to equipment malfunction, performance degradation, or even safety accidents. Therefore, developing efficient and accurate component installation inspection mechanisms is of paramount importance.

[0003] Especially in the complex processes of automotive parts manufacturing and assembly, ensuring the precise and secure installation of each part and component is the cornerstone of guaranteeing the overall performance, safety, and reliability of a vehicle. Particularly with the continuous advancement of automotive technology and the increasing demands of consumers for vehicle quality, the inspection and control of automotive parts installation quality have become more stringent and meticulous.

[0004] Traditional methods for inspecting the assembly of automotive parts mostly rely on manual visual inspection or simple mechanical testing. These methods are not only inefficient but also struggle to ensure the accuracy and consistency of the inspection results. With the widespread application of automation and intelligent technologies in the automotive manufacturing industry, people have begun to explore the use of advanced technologies such as sensors and machine vision to achieve automated inspection and quality control of automotive parts assembly.

[0005] However, in practical applications of automotive parts installation and inspection, some technical challenges remain. Particularly for welded components, such as engine blocks and transmission housings, the high temperatures generated during welding often pose a severe challenge to the inspection sensors. Directly using sensors for contact inspection may not only damage the sensors and increase inspection costs, but may also affect the accuracy and reliability of the inspection results. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this application is to provide a leak prevention device that can detect easily missed welded parts.

[0007] The above-mentioned objective of this application is achieved through the following technical solution:

[0008] A leak-proof device includes a bonding part for bonding a workpiece and a detection part for detecting a workpiece to be tested. The bonding part is disposed on one side of the detection part. The detection part includes a spring telescopic member and a pressure sensor. One end of the spring telescopic member is operably pressed against the workpiece to be tested, and the other end of the spring telescopic member is detachably connected to the pressure sensor.

[0009] This application further specifies that the spring telescopic component includes a guide post, a sleeve, and a spring. The guide post passes through the sleeve, and the guide post has a first stepped surface in its radial direction. The sleeve has a second stepped surface in its radial direction, and the second stepped surface is disposed on the inner surface of the sleeve. The two ends of the spring are respectively connected to the first stepped surface and the second stepped surface.

[0010] This application further provides that the guide post is provided with a limiting sleeve, and the limiting sleeve is located outside the sleeve along the axial direction of the guide post.

[0011] This application further specifies that the two ends of the guide post protrude from the sleeve, the guide post abuts against the test piece, and the guide post is made of heat-resistant material.

[0012] This application further specifies that the bonding portion has a bonding surface that bonds with the workpiece, the guide post has an end face that contacts the part to be tested, and the bonding surface and the end face are flush.

[0013] This application further specifies that the leak-proof device includes a fixing device, which connects the fitting part and the sleeve.

[0014] This application is further configured such that there is a first distance between the bonding surface and the end face, the first distance being less than the thickness of the part to be tested.

[0015] In summary, the beneficial technical effects of this application are as follows:

[0016] 1. The leak-proof device of this application accurately determines whether the automotive parts have been correctly installed by using a spring-loaded telescopic component to ensure a tight fit with the automotive parts under test and by using a pressure sensor to detect the contact pressure. This design effectively avoids the subjectivity and uncertainty of manual inspection, improves the accuracy and reliability of the inspection, and provides strong support for quality control in automotive manufacturing and assembly processes.

[0017] 2. The spring telescopic component of this application has a certain degree of elasticity, which allows for adjustment and can adapt to automotive parts of different shapes, sizes and materials, thereby improving the versatility and flexibility of the equipment.

[0018] 3. This application utilizes a spring telescopic component as an intermediate medium to avoid direct contact between the sensor and high-temperature components, thus solving the problem of detecting high-temperature welded components. This not only reduces the risk of sensor damage and extends the sensor's service life, but also reduces the increase in detection costs caused by sensor damage.

[0019] 4. The spring telescopic component and the pressure sensor of this application adopt a detachable connection method, which makes it easy to replace the spring telescopic component when it is worn or damaged, without having to replace the entire detection device. This not only reduces maintenance costs, but also improves the maintainability and ease of use of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a leak-proof device.

[0021] Figure 2 This is a cross-sectional schematic diagram of the leak-proof device.

[0022] Figure 3 This is a schematic diagram of the bonding section and the inspection section.

[0023] Explanation of reference numerals in the attached drawings: 1. Fitting part; 1A. Fitting surface; 2. Detection part; 21. Spring telescopic component; 211. Guide post; 2111. First stepped surface; 212. Sleeve; 2121. Second stepped surface; 213. Spring; 214. Limiting sleeve; 21A. End face; 22. Pressure sensor; 3. Fixing device; J. First distance. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] like Figures 1-3 As shown, a leak-proof device includes a bonding part 1 for bonding a workpiece and a detection part 2 for detecting a workpiece to be tested. The bonding part 1 is located on one side of the detection part 2. The detection part 2 includes a spring telescopic member 21 and a pressure sensor 22. One end of the spring telescopic member 21 is operably pressed against the workpiece to be tested, and the other end of the spring telescopic member 21 is connected to the pressure sensor 22.

[0026] Preferably, the bonding part 1 is made of a soft and durable rubber material, which has good sealing and adaptability, and can be tightly bonded to the surface of workpieces of various shapes and materials, ensuring tight contact with the workpiece without damaging it.

[0027] The spring telescopic component 21 is equipped with a high-strength stainless steel spring 213, which has a certain preload to ensure that it maintains a certain elongation when not subjected to external force. When subjected to external compression, it can effectively absorb impact force and smoothly transmit pressure. Preferably, a spring 213 seat can be used.

[0028] The pressure sensor 22 is a high-precision piezoresistive sensor, installed at the other end of the spring telescopic component 21. It can accurately measure and convert the pressure change generated by the force on the spring 213 into an electrical signal output, which is convenient for subsequent data processing and analysis.

[0029] When using this device, bring the fixture close to the product, with the contact part 1 close to the product surface and the detection part 2 close to the test piece until the contact part 1 is in contact with the product surface. At this point, the pressure sensor 22 detects whether the test piece is installed. Because the test piece has thickness, the degree of compression of the spring extension member 21 differs between the installed and uninstalled states when the contact part 1 is in contact with the product surface. Consequently, the force detected by the pressure sensor 22 on the spring extension member 21 also differs, thus allowing the detection of whether the test piece is installed.

[0030] Preferably, the system also includes a monitoring system. The monitoring system detects data from the pressure sensor 22. Pressure is transmitted to the pressure sensor 22 via the spring extension member 21. The sensor converts the received pressure signal into an electrical signal and outputs it to the monitoring system. The monitoring system determines whether there is a risk of leakage based on a preset threshold and issues an alarm or takes appropriate measures.

[0031] The spring telescopic component 21 can flexibly adapt to automotive parts of various shapes, sizes, and materials. Whether it is a regular tubular structure or a complex curved surface component, it can fit tightly to ensure the stability and accuracy of the inspection. This design significantly improves the versatility and flexibility of the equipment, meets the leak-proof inspection needs of automotive parts in different scenarios, and reduces the trouble and cost of customizing inspection tools due to differences in workpieces.

[0032] Furthermore, for welded test pieces, due to the residual heat after welding, the spring-loaded expansion joint 21 serves as a high-temperature protection medium. Considering the common high-temperature welded components in automotive manufacturing, the spring-loaded expansion joint 21 is used as an isolation medium between the sensor and the high-temperature component. This not only effectively avoids the sensor being directly exposed to the high-temperature environment, reducing the risk of sensor damage due to overheating and thus extending the sensor's service life, but also successfully solves the problem that traditional detection methods are difficult to implement in high-temperature environments. More importantly, by reducing sensor damage, this design effectively controls the additional testing costs incurred due to frequent sensor replacements.

[0033] To further improve the maintainability and ease of use of the equipment, the spring telescopic component 21 and the pressure sensor 22 of this application adopt a detachable connection. This detachable connection means that the spring telescopic component 21 is detachable from the pressure sensor 22, and the connection between the spring telescopic component 21 and the pressure sensor 22 is preferably abutment-type. This allows the user to quickly and easily replace the spring telescopic component 21 when it wears down due to long-term use or is accidentally damaged, without having to disassemble or replace the entire detection device, greatly simplifying the maintenance process and reducing maintenance costs. Furthermore, this modular design enhances the flexibility of the equipment, allowing users to select different spring telescopic component 21 configurations according to actual needs, further optimizing detection performance and improving the user experience.

[0034] Further, see Figure 2 The spring telescopic component 21 includes a guide post 211, a sleeve 212 and a spring 213. The guide post 211 passes through the sleeve 212. The guide post 211 has a first stepped surface 2111 in the radial direction. The sleeve 212 has a second stepped surface 2121 in the radial direction. The second stepped surface 2121 is located on the inner surface of the sleeve 212. The two ends of the spring 213 are respectively connected to the first stepped surface 2111 and the second stepped surface 2121.

[0035] One end of the guide post 211 is designed as a flat end face 21A to directly abut against the automotive parts to be tested. The guide post 211 has a radially recessed first stepped surface 2111 to provide a support point for the spring 213.

[0036] The inner diameter of the sleeve 212 is slightly larger than the diameter of the guide post 211, ensuring that the guide post 211 can slide smoothly inside the sleeve 212. The sleeve 212 also has a radially recessed second stepped surface 2121, forming a stable support structure for the spring 213.

[0037] Spring 213 is made of high-elasticity, fatigue-resistant spring material, and its two ends are tightly attached to the first stepped surface 2111 of guide post 211 and the second stepped surface 2121 of sleeve 212, respectively. Guide post 211 maintains a certain extension length and can be smoothly compressed when subjected to external force, effectively transmitting pressure to pressure sensor 22.

[0038] The guide post 211, sleeve 212 and spring 213 of the spring telescopic component 21 are closely integrated to form a stable telescopic mechanism, which can maintain high precision and long service life even in harsh working environments, ensuring the accuracy and reliability of test results.

[0039] Furthermore, a limiting sleeve 214 is provided on the guide post 211, and the limiting sleeve 214 is located outside the sleeve 212 along the axial direction of the guide post 211.

[0040] The inner diameter of the limiting sleeve 214 fits the diameter of the guide post 211, and the outer diameter of the limiting sleeve 214 is larger than the inner diameter of the sleeve 212, ensuring that the limiting sleeve 214 can be tightly fitted onto the guide post 211. Simultaneously, when the guide post 211 and the sleeve 212 move relative to each other to the limiting position, they are blocked by the limiting sleeve 214. The limiting sleeve 214 is arranged along the axial direction of the guide post 211 and is located outside the sleeve 212.

[0041] Furthermore, the two ends of the guide post 211 protrude from the sleeve 212, and the guide post 211 abuts against the test piece. The guide post 211 is made of heat-resistant material, which can further adapt to the high temperature test piece.

[0042] The two ends of the guide post 211 protrude from the sleeve 212, and the sleeve 212 is fixed relative to the fitting part 1, while the guide post will move relative to the sleeve 212.

[0043] For test pieces operating in high-temperature environments, the guide post 211 is manufactured using a heat-resistant material. This material possesses excellent high-temperature resistance, maintaining stable physical and chemical properties even at high temperatures, and is not easily deformed or damaged. Therefore, even if the temperature of the test piece is very high, the guide post 211 can withstand and effectively transmit pressure to the pressure sensor 22 without failing due to high temperatures. The choice of heat-resistant material not only improves the high-temperature resistance of the spring extension component 21 but also broadens its application range, making it suitable for the testing of a wider variety of automotive parts.

[0044] Furthermore, the bonding part 1 has a bonding surface 1A that is bonded to the workpiece, and the guide post 211 has an end face 21A that contacts the workpiece to be tested. The bonding surface 1A and the end face 21A are flush.

[0045] The leak-proof device also includes a fixing device 3, which connects the fitting part 1 and the sleeve 212. When the fitting part 1 is pressed against the product, the guide post 211 contacts the part to be tested. The guide post 211 is squeezed by the part to be tested, which causes the spring 213 to compress, offsetting part of the pressure. The other end of the guide post 211 abuts against the pressure sensor 22, transmitting the pressure to the pressure sensor 22. When it is removed from the workpiece, it returns to its initial state due to the presence of the spring 213.

[0046] like Figure 3 As shown, there is a first distance J between the mating surface 1A and the end face 21A, which is less than the thickness of the part to be tested. Therefore, when the part to be tested is present, the guide post 211 will contact the part to be tested first to transmit pressure.

[0047] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A leak-proof device, characterized in that, It includes a bonding part (1) for bonding a workpiece and a detection part (2) for detecting a workpiece. The bonding part (1) is located on one side of the detection part (2). The detection part (2) includes a spring telescopic member (21) and a pressure sensor (22). One end of the spring telescopic member (21) is operably pressed against the workpiece, and the other end of the spring telescopic member (21) is detachably connected to the pressure sensor (22).

2. The leak-proof device according to claim 1, characterized in that, The spring telescopic component (21) includes a guide post (211), a sleeve (212), and a spring (213). The guide post (211) passes through the sleeve (212). The guide post (211) has a first stepped surface (2111) in the radial direction. The sleeve (212) has a second stepped surface (2121) in the radial direction. The second stepped surface (2121) is located on the inner surface of the sleeve (212). The two ends of the spring (213) are respectively connected to the first stepped surface (2111) and the second stepped surface (2121).

3. The leak-proof device according to claim 2, characterized in that, The guide post (211) is provided with a limiting sleeve (214), which is located outside the sleeve (212) along the axial direction of the guide post (211).

4. The leak-proof device according to claim 2, characterized in that, The two ends of the guide post (211) protrude from the sleeve (212), the guide post (211) abuts against the test piece, and the guide post (211) is made of heat-resistant material.

5. The leak-proof device according to claim 4, characterized in that, The bonding part (1) has a bonding surface (1A) that is in contact with the workpiece, and the guide post (211) has an end face (21A) that contacts the workpiece. The bonding surface (1A) and the end face (21A) are flush.

6. The leak-proof device according to claim 2, characterized in that, It also includes a fixing device (3) that connects the fitting part (1) and the sleeve (212).

7. The leak-proof device according to claim 5, characterized in that, There is a first distance (J) between the bonding surface (1A) and the end face (21A), and the first distance (J) is less than the thickness of the part to be tested.

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