Airtightness detection device for stamping terminal

Abstract

The utility model relates to the technical field of terminal air tightness detection, in particular to a stamping terminal air tightness detection device which is based on a stamping type power connection terminal, a terminal sealing ring is integrated on the stamping type power connection terminal, the stamping terminal air tightness detection device comprises an air tightness test board and a terminal detection pipe, and an air pipe is reserved at the detection end of the air tightness test board. The end part of the air pipe is provided with an air pipe joint connected with the terminal detection pipe; and a terminal detection cavity communicated with the air pipe is formed in the terminal detection pipe. And the air pipe joint and the terminal detection pipe are connected through threads, so that the tightness and stability of connection are ensured. Meanwhile, the inner wall of the terminal detection tube is provided with a limiting retainer ring and a flaring, so that the terminal can be accurately inserted, and the sealing effect is enhanced. According to the design, the detection process is quicker and more accurate, the detection efficiency is greatly improved, and meanwhile, the reliability of a detection result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal airtightness detection, in particular to a stamping terminal airtightness detection device. Background Art

[0002] In the field of new energy vehicles, the insulation withstanding voltage performance of fast and slow charging sockets is crucial and needs to reach the protection level of IP67 to prevent moisture from entering the inside of the charging socket and ensure the safety and reliability of the charging process. The vehicle manufacturers have strict requirements for the airtightness detection of charging sockets, and usually need to conduct 100% airtightness detection on each socket.

[0003] The traditional detection scheme is to put the whole charging socket (including the wire harness) into an airtight detection cavity, inflate the cavity, and determine the tightness of the socket by detecting the leakage amount. However, there are multiple problems with this detection method:

[0004] Complex operation: It is cumbersome and time-consuming to put the whole socket and wire harness into the detection cavity and arrange each wire in a fixed position.

[0005] High mold cost: A set of molds including an upper mold and a lower mold needs to be developed. After the molds are pressed together, a closed cavity is formed, and the cost of making such molds is relatively high.

[0006] High rework cost: When it is detected that the airtightness of the socket is unqualified, the leakage point cannot be immediately determined. Usually, the socket needs to be disassembled and checked one by one. If the problem lies in the terminal sealing ring, the terminal and the cable need to be replaced, resulting in high rework costs.

[0007] Low detection efficiency: The time for putting the product into the detection device and the detection time are both relatively long, and the overall detection efficiency is low. Summary of the Utility Model

[0008] In view of the technical problems existing in the prior art, the utility model provides a stamping terminal airtightness detection device to solve the problem of cumbersome terminal airtightness detection. [[ID=3?]]

[0009] The technical solution of the utility model to solve the above technical problems is as follows: A stamping terminal airtightness detection device, based on a stamping power connection terminal, with a terminal sealing ring integrated on the stamping power connection terminal, includes an airtight test bench and a terminal detection tube. The detection end of the airtight test bench is reserved with an air tube, and an air tube joint connected to the terminal detection tube is installed at the end of the air tube; a terminal detection cavity communicating with the air tube is formed in the terminal detection tube;

[0010] After the stamping power connection terminal is completely inserted into the terminal detection cavity of the terminal detection tube, the airtight test bench inflates along the air tube to detect the tightness of the terminal sealing ring.

[0011] On the basis of the above technical solution, the present utility model can also be improved as follows.

[0012] Further, one end of the tracheal connector is provided with an external thread, and the end of the terminal detection tube is provided with an internal thread adapted to the external thread of the tracheal connector.

[0013] Further, the external thread of the tracheal connector is wound with waterproof tape and threadedly connected to the internal thread of the terminal detection tube.

[0014] Further, the trachea is sleeved on the other end of the tracheal connector, and a clamp is provided outside the trachea for clamping.

[0015] Further, a limiting retaining ring adapted to the stamping type electrical connection terminal is also formed on the inner wall of the terminal detection tube.

[0016] Further, the detection port of the terminal detection tube is in a flared shape.

[0017] Moreover, the stamping terminal airtight detection device provided by the present utility model, compared with the prior art, has at least the following beneficial effects:

[0018] By threadedly connecting the tracheal connector and the terminal detection tube, the tightness and stability of the connection are ensured. At the same time, the limiting retaining ring and the flared design on the inner wall of the terminal detection tube not only facilitate the accurate insertion of the terminal, but also enhance the sealing effect. This design makes the detection process faster and more accurate, greatly improving the detection efficiency and ensuring the reliability of the detection results.

[0019] The tracheal connector and the terminal detection tube adopt a detachable design, which is convenient for users to regularly replace the terminal detection tube according to needs. This feature effectively extends the service life of the equipment and reduces the maintenance cost. At the same time, the replacement process is simple and fast, without complex tools or steps, further improving the practicality and convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a cross-sectional view of the terminal detection tube of the present utility model.

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. Stamping type electrical connection terminal; 1.1. Terminal sealing ring; 2. Airtight test bench; 3. Terminal detection tube; 3.1. Limiting retaining ring; 4. Trachea; 5. Tracheal connector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0025] It should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" in the terminology should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For those of ordinary skill in the art, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0026] As Figure 1 and Figure 2 shown, the airtight detection device for the stamping terminal of the present utility model design is based on the stamping power connection terminal 1. A terminal sealing ring 1.1 is integrated on the stamping power connection terminal 1, and it includes an airtight test bench 2 and a terminal detection tube 3. An air tube 4 is reserved at the detection end of the airtight test bench 2, and an air tube joint 5 connected to the terminal detection tube 3 is installed at the end of the air tube 4; a terminal detection cavity communicating with the air tube 4 is formed in the terminal detection tube 3.

[0027] After the stamping power connection terminal 1 is completely inserted into the terminal detection cavity of the terminal detection tube 3, the airtight test bench 2 inflates along the air tube 4 to detect the sealing performance of the terminal sealing ring 1.1. During the detection, the stamping power connection terminal 1 is completely inserted into the terminal detection cavity of the terminal detection tube 3. Subsequently, the airtight test bench 2 inflates the terminal detection cavity through the air tube 4. By monitoring the gas leakage situation, it can be judged whether the sealing performance of the terminal sealing ring 1.1 meets the standard.

[0028] As an implementation manner, one end of the air tube joint 5 is provided with an external thread, and an internal thread adapted to the external thread of the air tube joint 5 is provided at the end of the terminal detection tube 3.

[0029] Specifically, the external thread of the air tube joint 5 is wound with waterproof tape and is threadedly connected to the internal thread of the terminal detection tube 3.

[0030] This threaded connection method not only ensures the tight connection between the two, but also enables the air tube joint 5 to be firmly installed on the terminal detection tube 3 and is not easy to loosen or fall off.

[0031] The detachable design facilitates the regular replacement of the terminal detection tube 3. Since the terminal detection tube 3 is a component that directly contacts the stamping power connection terminal 1, during the long-term detection process, its inner wall may be worn due to friction with the terminal. Once the wear reaches a certain degree, it may affect the detection accuracy and sealing performance.

[0032] In addition, the air tube 4 is sleeved on the other end of the air tube joint 5, and a clamp is provided outside the air tube 4 to ensure the connection tightness.

[0033] As an implementation manner, a limiting retaining ring 3.1 adapted to the stamping electrical connection terminal 1 is further formed on the inner wall of the terminal detection tube 3. When the front edge of the terminal 1 contacts the limiting retaining ring 3.1, the user can intuitively know that the terminal has been inserted to the correct depth. This not only ensures the position consistency of the terminal 1 during each detection, but also prevents damage or detection errors caused by over-insertion of the terminal 1.

[0034] Specifically, the detection port of the terminal detection tube 3 is flared; this makes the opening of the detection port larger, reducing the insertion resistance, enabling the user to complete the insertion action more easily and quickly; when the terminal 1 is fully inserted, the flared part will slightly compress the sealing ring 1.1 on the terminal 1, thus forming a tighter seal. This compression effect helps reduce gas leakage and improve the detection accuracy.

[0035] The working principle of the present utility model is as follows:

[0036] Preparation of the detection cavity: First, the terminal detection tube 3 is machined from a bar. Its right end is designed as a tubular structure, and the inner diameter of its inner wall matches the inner diameter of the cavity for installing the terminal on the charging socket, ensuring that the terminal can be inserted smoothly and tightly.

[0037] Installation of the air pipe joint: The left end of the terminal detection tube 3 is machined into an internal thread structure, which matches the external thread of the air pipe joint 5. After winding waterproof tape around the external thread of the air pipe joint 4, it is screwed into the internal thread of the detection cavity to ensure the sealing between the two.

[0038] Connection of the air pipe: Prepare an air pipe about 1.5 meters long, and its pipe diameter matches the air pipe joint 4. Insert one end of the air pipe into the air pipe joint 4, and connect the other end to the airtight test bench 2 to complete the assembly of the detection device.

[0039] Insertion and sealing of the terminal: During the detection process, the stamping electrical connection terminal 1 is inserted into the terminal detection cavity until the terminal sealing ring 1.1 is completely inserted. The waterproof ribs on the terminal sealing ring 1.1 form an interference fit with the inner wall of the terminal detection cavity, playing a sealing role.

[0040] Airtight detection: Start the airtight test bench 2 and set the test parameters (such as inflation pressure 50Kpa, inflation time 2 seconds, pressure holding time 1 second, test time 2 seconds, and leakage value). During the test, the airtight detection bench inflates the detection cavity through the air pipe. If the terminal sealing performance is good, the leakage amount will be less than the set leakage value, thus determining that the detection is qualified.

[0041] Supplementary information about the airtight detection bench:

[0042] Specifications: Airtight detection benches usually come in a variety of specifications to meet the detection requirements of different sizes and types of terminals. Specific specifications may include the test pressure range, test time range, leakage value setting range, etc. When selecting, comprehensive consideration should be given to factors such as the size of the terminal to be tested, sealing requirements, and test efficiency.

[0043] Common models may include portable, desktop, multi-channel, etc. types. When selecting, it is necessary to weigh in combination with actual needs, such as test environment, test quantity, operation convenience and other factors. Again, no more details will be elaborated here.

[0044] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise expressly stipulated and defined, the terms "install", "connect", "couple" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications once they know the basic inventive concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present utility model.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A stamping terminal airtight detection device, based on a stamping power connection terminal (1), wherein a terminal sealing ring (1.1) is integrated on the stamping power connection terminal (1), and is characterized in that, It includes an airtight test bench (2) and a terminal detection tube (3). A trachea (4) is reserved at the detection end of the airtight test bench (2), and a trachea joint (5) connected to the terminal detection tube (3) is installed at the end of the trachea (4); a terminal detection cavity communicating with the trachea (4) is formed in the terminal detection tube (3). After the stamping type power connection terminal (1) is completely inserted into the terminal detection cavity of the terminal detection tube (3), the airtight test bench (2) inflates along the trachea (4) to detect the sealing performance of the terminal sealing ring (1.1).

2. The airtight detection device for stamping terminals according to claim 1, wherein, One end of the trachea joint (5) is provided with an external thread, and an internal thread adapted to the external thread of the trachea joint (5) is provided at the end of the terminal detection tube (3).

3. The airtight detection device for stamping terminals according to claim 2, wherein, The external thread of the trachea joint (5) is wound with waterproof tape and threadedly connected to the internal thread of the terminal detection tube (3).

4. The airtight detection device for stamping terminals according to claim 1, wherein, The trachea (4) is sleeved on the other end of the trachea joint (5), and a clamp is provided outside the trachea (4) for clamping.

5. The airtight detection device for stamping terminals according to claim 1, wherein A limiting retaining ring (3.1) adapted to the stamping type power connection terminal (1) is further formed on the inner wall of the terminal detection tube (3).

6. The airtight detection device for stamping terminals according to claim 1, wherein, The detection port of the terminal detection tube (3) is in a flared shape.

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