electrically conductive connection terminal

Abstract

This utility model discloses a conductive connection terminal, including: a rear sleeve, an inner sleeve, a spring, and a sealing element. The rear sleeve has a first insertion hole, and the inner sleeve is snapped into the opening of the first insertion hole. The inner sleeve has a second insertion hole, which communicates with the first insertion hole. The spring is disposed in the second insertion hole, and the sealing element is disposed in the first insertion hole, with one end of both the inner sleeve and the spring abutting against the sealing element. The end face of the rear sleeve has a conductive layer, and the conductive surface of the inner sleeve is in contact with the conductive layer. The inner sleeve and the conductive layer are made of the same material, which can ensure smooth current conduction between them and avoid electrochemical corrosion caused by the different materials of the inner sleeve and the rear sleeve. Based on this, the rear sleeve can be made of low-cost and lightweight materials (such as aluminum) as needed, thereby achieving the goal of cost reduction and weight reduction. In addition, with the help of the sealing element, electrolyte can be prevented from entering the area between the rear sleeve, the inner sleeve, and the spring, further eliminating the occurrence of electrochemical corrosion.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a conductive connection terminal. Background Technology

[0002] Connecting terminals are key components in the field of electrical connections, and are typically assembled from multiple parts. In the prior art, the components of connecting terminals are generally made of copper to take advantage of copper's excellent electrical conductivity.

[0003] However, copper has obvious drawbacks: First, copper is expensive, which makes the overall manufacturing cost of the connectors too high, which is not conducive to improving the market competitiveness of the products; second, copper has a high density, which makes it difficult to reduce the weight of the connectors and cannot meet the development needs of lightweight equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a conductive connection terminal.

[0005] This utility model discloses a conductive connection terminal, comprising: a rear sleeve, an inner sleeve, a spring, and a sealing element. The rear sleeve has a first insertion hole, and the inner sleeve is engaged at the opening of the first insertion hole. The inner sleeve has a second insertion hole communicating with the first insertion hole. The spring is disposed in the second insertion hole, and the sealing element is disposed in the first insertion hole. One end of both the inner sleeve and the spring abuts against the sealing element. The end face of the rear sleeve has a conductive layer, and the conductive surface of the inner sleeve is in contact with the conductive layer. The inner sleeve and the conductive layer are made of the same material.

[0006] According to one embodiment of the present invention, a bearing surface is provided in the first insertion hole, and a sealing element is disposed on the bearing surface.

[0007] According to one embodiment of the present invention, a connecting plate is provided at the end of the rear sleeve away from the inner sleeve.

[0008] According to one embodiment of the present invention, the inner sleeve includes a support plate and a support cylinder connected to the support plate. The support plate has a conductive surface, the support cylinder is located in a first insertion hole, the second insertion hole passes through the support plate and the support cylinder, and one end of the support cylinder abuts against a sealing element.

[0009] According to one embodiment of the present invention, a limiting surface is provided inside the support cylinder, and the end of the spring away from the sealing element abuts against the limiting surface.

[0010] According to one embodiment of this utility model, the sealing element is a sealing ring.

[0011] According to one embodiment of the present invention, the sealing element is a sealing gasket.

[0012] According to one embodiment of the present invention, the rear sleeve is made of aluminum.

[0013] According to one embodiment of the present invention, both the inner sleeve and the conductive layer are made of copper.

[0014] According to one embodiment of the present invention, the reed is made of a material with high conductivity and high yield strength.

[0015] The beneficial effects of this utility model are that the inner sleeve and the conductive layer are made of the same material, which can not only ensure smooth current conduction between the two, but also avoid electrochemical corrosion problems caused by the different materials of the inner sleeve and the rear sleeve. Based on this, the rear sleeve can be made of low-cost and lightweight materials (such as aluminum) as needed, thereby achieving the goal of cost reduction and weight reduction. In addition, with the help of the sealing element, the electrolyte can be prevented from entering the area between the rear sleeve and the inner sleeve and the spring, further eliminating the occurrence of electrochemical corrosion. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural diagram of a conductive connection terminal; Figure 2 This is a split view of the conductive connection terminals; Figure 3 This is a cross-sectional view of the conductive connection terminal; Figure 4 for Figure 3 Enlarged view of part A in the image; Figure 5 This is a schematic diagram of the three-dimensional structure of the rear sleeve; Figure 6 This is a schematic diagram of the three-dimensional structure of the inner sleeve; Figure 7 This is another split view of the conductive connection terminals.

[0017] Explanation of reference numerals in the attached figures 1. Rear sleeve; 11. First insertion hole; 12. Conductive layer; 13. Bearing surface; 14. Connecting plate; 2. Inner sleeve; 21. Second insertion hole; 22. Conductive surface; 23. Support plate; 24. Support cylinder; 241. Limiting surface; 3. Reed; 4. Sealing components. Detailed Implementation

[0018] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] like Figures 1-3 As shown, Figure 1 This is a three-dimensional structural diagram of a conductive connection terminal; Figure 2 This is a split view of the conductive connection terminals; Figure 3 This is a cross-sectional view of the conductive connection terminal. The conductive connection terminal includes a rear sleeve 1, an inner sleeve 2, a spring 3, and a seal 4. The inner sleeve 2 is connected to the rear sleeve 1, the spring 3 is disposed inside the inner sleeve 2, and the seal 4 abuts against one end of the inner sleeve 2 and the spring 3. In use, current can be conducted between the rear sleeve 1, the inner sleeve 2, and the spring 3. The rear sleeve 1 is connected to the wire harness, and the external pin is inserted and contacts the spring 3.

[0021] Please refer to the following: Figure 4 and Figure 5 , Figure 4 for Figure 3 Enlarged view of part A in the image; Figure 5This is a three-dimensional structural diagram of the rear sleeve 1. The rear sleeve 1 has a first insertion hole 11, which is opened along the axial direction of the rear sleeve 1. The inner sleeve 2 and the sealing element 4 are both disposed within the first insertion hole 11. One end of the rear sleeve 1 also has a conductive layer 12, and the inner sleeve 2 has a conductive surface 22. When the inner sleeve 2 is connected to the rear sleeve 1, the conductive surface 22 of the inner sleeve 2 abuts against the conductive layer 12 of the rear sleeve 1. Specifically, the conductive layer 12 of the rear sleeve 1 is made of the same material as the inner sleeve 2, thus avoiding electrochemical corrosion problems between different materials. In practical applications, the inner sleeve 2 is made of copper, the conductive layer 12 is also made of copper, and the overall structure of the rear sleeve 1 can be made of aluminum to reduce cost and weight.

[0022] Specifically, the forming process of the conductive layer 12 on the outer wall of the back sleeve 1 is as follows: First, the back sleeve 1 is placed in a designated position. Then, high-pressure gas is used to transport the pre-prepared powder particles corresponding to the conductive layer 12. The powder particles are then mixed with another heated high-pressure gas to form a mixed gas. The mixed gas passes through a Laval tube and is output to the designated position on the surface of the back sleeve 1. During the process of the mixed gas passing through the Laval tube, its flow velocity increases from subsonic to supersonic. Finally, it impacts the surface of the back sleeve 1. The powder particles, due to their own high-speed kinetic energy, undergo violent deformation at the moment of impact with the surface of the back sleeve 1. Through mechanical interlocking and metal bonding, a dense and completely covered conductive layer 12 is deposited on the surface of the back sleeve 1. The mechanical interlocking and metal bonding between the powder particles and the back sleeve 1 can eliminate the gap between the conductive layer 12 and the back sleeve 1, which is beneficial to solving the electrochemical corrosion problem at the interface between the two. At the same time, it also improves the bonding strength between the conductive layer 12 and the back sleeve 1.

[0023] Furthermore, the rear sleeve 1 also has a bearing surface 13, which is located inside the first insertion hole 11. The sealing element 4 is located on the bearing surface 13. When the inner sleeve 2 is installed in the rear sleeve 1, one end face of the inner sleeve 2 abuts against the sealing element 4. The bearing surface 13 and the sealing element 4 are used to support and limit the inner sleeve 2. At the same time, the sealing element 4 can prevent the end face of the inner sleeve 2 from directly contacting the bearing surface 13 and prevent external electrolytes from entering the area between the end face of the inner sleeve 2 and the bearing surface 13, which helps to avoid electrochemical corrosion between the end face of the inner sleeve 2 and the bearing surface 13. Furthermore, the rear sleeve 1 also has a connecting plate 14, which is located at the end of the rear sleeve 1 away from the conductive layer 12. The connecting plate 14 is connected to the wire harness and realizes current conduction. In this embodiment, the connecting plate 14 and the rear sleeve 1 are both made of the same material, such as aluminum, which can effectively improve the connection effect between the wire harness and the connecting plate 14.

[0024] Please refer to the following: Figure 6 , Figure 6This is a three-dimensional structural diagram of the inner sleeve 2. The inner sleeve 2 includes a support plate 23 and a support cylinder 24. The support cylinder 24 is connected to the support plate 23. One side of the support plate 23 is a conductive surface 22, which contacts the conductive layer 12 of the rear sleeve 1 during use. The support cylinder 24 is disposed in the first insertion hole 11, and the end face of the support cylinder 24 away from the support plate 23 abuts against the sealing element 4. Specifically, the inner sleeve 2 also has a second insertion hole 21, which penetrates the support plate 23 and the support cylinder 24. The spring 3 is located in the second insertion hole 21 of the support cylinder 24, and the external pin is inserted into the second insertion hole 21 and abuts against the spring 3. Furthermore, the support cylinder 24 also has a limiting surface 241, which is formed on the inner wall surface of the support cylinder 24. The end face of the spring 3 away from the sealing element 4 abuts against the limiting surface 241. Through the cooperation of the limiting surface 241 and the sealing element 4, the axial fixation of the spring 3 is achieved.

[0025] In this embodiment, the reed 3 is made of a highly conductive and high-yield material, such as copper.

[0026] Please review Figure 2 and Figure 3 Seal 4 is an existing sealing ring structure. like Figure 7 As shown, Figure 7 This is another exploded view of the conductive connection terminals. In another embodiment, the seal 4 is a conventional gasket structure.

[0027] In summary, the inner sleeve 2 and the conductive layer 12 are made of the same material, which can ensure smooth current conduction between them and avoid electrochemical corrosion problems caused by the different materials of the inner sleeve 2 and the rear sleeve 1. Based on this, the rear sleeve 1 can be made of low-cost and lightweight materials (such as aluminum) as needed, thereby achieving the goal of cost reduction and weight reduction. In addition, with the help of the sealing element 4, the electrolyte can be prevented from entering the area between the rear sleeve 1 and the inner sleeve 2 and the spring 3, further eliminating the occurrence of electrochemical corrosion.

[0028] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An electrically conductive connection terminal, characterized by include: The rear sleeve (1), inner sleeve (2), spring (3), and sealing element (4) are provided. The rear sleeve (1) has a first insertion hole (11), and the inner sleeve (2) is fitted into the opening of the first insertion hole (11). The inner sleeve (2) has a second insertion hole (21), which is connected to the first insertion hole (11). The spring (3) is located in the second insertion hole (21), and the sealing element (4) is located in the first insertion hole (11). One end of the inner sleeve (2) and the spring (3) are both in contact with the sealing element (4). The end face of the rear sleeve (1) has a conductive layer (12), and the conductive surface (22) of the inner sleeve (2) is in contact with the conductive layer (12). The inner sleeve (2) and the conductive layer (12) are made of the same material.

2. The electrically conductive connection terminal according to claim 1, characterized in that The first insertion hole (11) has a bearing surface (13) inside, and the sealing element (4) is disposed on the bearing surface (13).

3. The conductive connection terminal according to claim 1, characterized in that, A connecting plate (14) is provided at the end of the rear sleeve (1) away from the inner sleeve (2).

4. The conductive connection terminal according to claim 1, characterized in that, The inner sleeve (2) includes a support plate (23) and a support cylinder (24) connected to the support plate (23). The support plate (23) has a conductive surface (22). The support cylinder (24) is located in the first insertion hole (11). The second insertion hole (21) passes through the support plate (23) and the support cylinder (24). One end of the support cylinder (24) abuts against the seal (4).

5. The conductive connection terminal according to claim 4, characterized in that, The support cylinder (24) has a limiting surface (241) inside, and the end of the spring (3) away from the seal (4) abuts against the limiting surface (241).

6. The electrically conductive connection terminal according to any one of claims 1 to 5, characterized in that The sealing element (4) is a sealing ring.

7. The conductive connection terminal according to any one of claims 1-5, characterized in that, The sealing element (4) is a sealing gasket.

8. The electrically conductive connection terminal according to any one of claims 1 to 5, characterized in that The back cover (1) is made of aluminum.

9. The electrically conductive connection terminal according to claim 8, characterized in that The inner sleeve (2) and the conductive layer (12) are both made of copper.

10. The conductive connection terminal according to any one of claims 1-5, characterized in that, The reed (3) is made of a material with high conductivity and high yield strength.

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