Terminal body and terminal for high-voltage connection

Through the one-piece integrated molding terminal body design, combined with the elastic contact spring and limit structure, the existing terminal body has solved the problems of high riveting process requirements and poor current carrying performance in the high-voltage connection and the electrical performance stability and Reduced production costs.

CN222338527UActive Publication Date: 2025-01-10HU LANE ELECTRONICS NANJING CO LTD
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Patent Information

Application Number
CN202323384580.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-11
Publication Date
2025-01-10
Estimated Expiration
2033-12-11

AI Technical Summary

Technical Problem

The existing terminal bodies for high-voltage connections have high requirements for riveting processes, poor current-carrying performance, and the risk of loosening during ultrasonic welding, and have high production costs, which cannot meet the requirements of high-voltage connectors for electrical performance stability.

Method used

Adopt a one-piece integrated terminal body design, including plug-in board, bridge, folding part, elastic contact spring and limit structure, connected to the wire through ultrasonic welding to avoid the risk of riveting looseness, and through limit shell and spring The chip achieves stable electrical connection.

Benefits of technology

It improves current carrying performance, reduces production costs, avoids the impact of ultrasonic welding on riveting, and achieves the stability of electrical performance and simplification of production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a terminal body and a terminal for high voltage connection. The terminal body used for high-voltage connection comprises a first plug board, and the first plug board is provided with a wire connecting part used for being connected with a wire and a plug part connected to the front end of the wire connecting part. One side of an inserting part of the first inserting plate is turned upwards and extends to form a bridging part, a second inserting plate extends from the upper end of the bridging part to the other side of the inserting part, an inserting groove is formed in a gap between the second inserting plate and the inserting part, and the first inserting plate, the bridging part and the second inserting plate are integrally formed in a one-piece mode. The current-carrying performance is good, the risk of loose riveting during ultrasonic welding is completely avoided, and the stability is good.
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Description

Technical Field

[0001] The present application relates to an electrical connector, and more particularly to a terminal body and a terminal for high voltage connection. Background Art

[0002] The terminal body of the connector for high-voltage connection generally includes a plug-in portion and a connection portion electrically connected to the plug-in portion, and the connection between the connection portion and the wire is achieved through ultrasonic welding technology. When in use, the paired terminal is plugged into the plug-in portion, and then the electrical connection with the wire is achieved through the connector.

[0003] like Figure 1 As shown, the existing terminal body 10 for high-voltage connection includes a first plug-in board 11 and a second plug-in board 12. Among them, the second contact plate 12 on the upper layer has a connecting portion 121 riveted to the rear of the first plug-in board 11, a bent portion 122 bent upward from the front end of the connecting portion 121, and a plug-in portion 123 extending forward from the front end of the bent portion 122. The plug-in portion 123 is spaced apart from the front of the first plug-in board 11 to form a plug-in slot 13. The connecting portion 121 of the second contact plate 12 is connected to the wire by ultrasonic welding technology, and is connected to the first contact plate 11 of the lower layer through the riveting point, so that the first contact plate 11 and the second contact plate 12 can be directly electrically connected to the wire. However, the existing terminal body 10 has the following defects:

[0004] 1. The rear end of the first contact plate 11 and the connecting portion 121 of the second contact plate 12 are fitted together, and current conduction is achieved through riveting, which has high requirements for riveting technology, small conduction cross-section, poor current carrying performance, and higher vibration frequency and energy requirements during ultrasonic welding, and there is a risk of loosening of the riveted points;

[0005] 2. The terminal body 10 is divided into two parts, the upper and lower parts, and two sets of molds are required, which leads to high production costs.

[0006] Therefore, the existing terminal body for high voltage connection cannot meet the requirements of high voltage connectors for current carrying performance and electrical performance stability. Utility Model Content

[0007] The technical problem to be solved by the present application is to provide a terminal body and a terminal for high voltage connection which are not affected by ultrasonic welding and have stable electrical performance in view of the above-mentioned defects of the prior art.

[0008] In order to solve its technical problems, the present application proposes a terminal body for high-voltage connection in the first aspect, including a first plug-in board, the first plug-in board having a connecting portion for connecting to a wire and a plug-in portion connected to the front end of the connecting portion, one side of the plug-in portion of the first plug-in board is folded upward and extended to form a bridging portion and a second plug-in board is extended from the upper end of the bridging portion to the other side of the plug-in portion, the gap between the second plug-in board and the plug-in portion forms a plug-in slot, and the first plug-in board, the bridging portion and the second plug-in board are integrally formed as one piece.

[0009] According to one embodiment of the terminal body for high-voltage connection described in the present application, the terminal body also includes a folded portion that is folded downward from the rear end of the second plug-in board and extends toward the upper surface of the first plug-in board; the plug-in portion of the first plug-in board, the second plug-in board, the bridging portion and the folded portion jointly define the plug-in slot.

[0010] According to one embodiment of the terminal body for high voltage connection described in the present application, at least one of the upper surface of the plug-in portion of the first plug-in board and the relatively lower surface of the second plug-in board is provided with a mounting structure for mounting a spring sheet that elastically contacts the plug-in terminal.

[0011] According to one embodiment of the terminal body for high voltage connection described in the present application, the mounting structure includes a plurality of riveted columns arranged on the outer side of at least one of the upper surface of the plug-in portion and the relative lower surface of the second plug-in board in the plug-in direction.

[0012] According to one embodiment of the terminal body for high voltage connection described in the present application, the plug-in portion of the first plug-in board and the second plug-in board are further provided with a limiting structure for fixing a limiting shell.

[0013] According to one embodiment of the terminal body for high voltage connection described in the present application, the limiting structure includes limiting grooves opened on the inner and outer edges of the plug-in direction of the plug-in portion and the second plug-in board and a limiting protrusion protruding from the limiting groove.

[0014] According to an embodiment of the terminal body for high voltage connection described in the present application, the limiting structure further includes a limiting boss protruding from the front end of the plug-in portion and the second plug-in board.

[0015] In order to solve its technical problem, the present application proposes a terminal for high-voltage connection in the second aspect, including a terminal body and a spring, the terminal body is provided with a plug-in slot, the spring is installed in the plug-in slot and is electrically connected to the terminal body, the spring has a plurality of elastic contacts arched toward the plug-in slot to elastically contact with the plug-in terminal, and the terminal body is the aforementioned terminal body for high-voltage connection.

[0016] According to one embodiment of the terminal for high-voltage connection described in the present application, the terminal also includes a limit shell spanning the gap between the plug-in portion and the front end of the second plug-in board to be fixed to the terminal body, the limit shell having a first limit plate and a second limit plate arranged at intervals and a connecting plate connecting the front ends of the first limit plate and the second limit plate; the limit grooves and limit protrusions arranged on the inner and outer edges in the plug-in direction of the plug-in portion and the second plug-in board, the inner and outer edges of the first limit plate and the second limit plate are correspondingly provided with C-shaped limit claws that are stuck in the limit grooves and hook the limit protrusions.

[0017] According to an embodiment of the terminal for high voltage connection described in the present application, the limiting boss protrudes from the front end of the plug-in portion and the second plug-in board, and the connecting plate of the limiting shell is provided with corresponding limiting holes for inserting the limiting boss.

[0018] The implementation of the terminal body and terminal for high-voltage connection of the present application has the following beneficial effects: the terminal body for high-voltage connection according to the embodiment of the present application optimizes the existing two-piece riveted structure into a one-piece integrated molding structure, has good current-carrying performance, and completely avoids the risk of riveting looseness during ultrasonic welding, has good stability, and simple process requirements, and a set of molds can meet production needs, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 It is a schematic diagram of the structure of a terminal for high voltage connection in the prior art;

[0021] Figure 2 This is a schematic diagram of the structure of a terminal body for high voltage connection according to an embodiment of the present application;

[0022] Figure 3 yes Figure 2 A schematic structural diagram of a terminal body for high voltage connection from another angle shown;

[0023] Figure 4 is a schematic structural diagram of a terminal for high voltage connection according to an embodiment of the present application;

[0024] Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the terminal for high voltage connection shown;

[0025] Figure 6 yes Figure 4 The schematic diagram of the structure of the terminal for high voltage connection, the wire and the mating terminal;

[0026] Figure 7 yes Figure 4 The structure cross-sectional view of the terminal for high voltage connection mating with the mating terminal is shown. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the embodiments in the present application and the features in the embodiments may be combined with each other in the absence of conflict.

[0028] Figure 2 and Figure 3 FIG. 2 shows a schematic diagram of the structure of a terminal body 20 for high voltage connection according to an embodiment of the present application. Figure 2 and Figure 3 As shown, the terminal body 20 for high-voltage connection includes a first plug-in board 21, the first plug-in board 21 has a connection portion 211 located at the rear end and a plug-in portion 212 connected to the front end of the connection portion 211, one side of the plug-in portion 212 is folded upward to extend to form a bridge portion 22, and a second plug-in board 23 extends from the upper end of the bridge portion 22 to the other side of the plug-in portion 212. The gap between the second plug-in board 23 and the plug-in portion 212 of the first plug-in board 21 due to the bridge portion 22 becomes a plug-in slot 25 for receiving the plug-in terminal 60 (see Figure 6 The connection portion 211 of the first plug board 21 is used to be electrically connected to the wire 50 by, for example, ultrasonic welding technology (see Figure 6 As shown), the plug-in terminal 60 is electrically connected to the wire 50. Figure 2 and Figure 3 As shown, the terminal body 20 for high-voltage connection is also folded downward from the rear end of the second plug-in board 23 to form a folded portion 24 extending toward the upper surface of the first plug-in board 21, and the plug-in portion 212 of the first plug-in board 21, the second plug-in board 23, the bridge portion 22 and the folded portion 24 jointly define a plug-in slot 25. The folded portion 24 may or may not abut against the upper surface of the first plug-in board 21, and it can play a supporting role to ensure that the gap structure between the plug-in portion 212 of the first plug-in board 21 and the second plug-in board 23 is stable.

[0029] In addition, at least one of the upper surface of the plug-in portion 212 of the first plug-in board 21 and the lower surface of the second plug-in board 23 may also be provided with a mounting structure for mounting a spring sheet that elastically contacts the plug-in terminal. Figure 2 and Figure 3As shown, the upper surface of the plug-in portion 212 and the lower surface of the second plug-in board 23 are both provided with a plurality of rivet columns 26 on the outer side in the plug-in direction for riveting and installing the spring. Furthermore, the plug-in portion 212 of the first plug-in board 21 and the second plug-in board 23 are also provided with a limiting structure for fixing the limiting shell. Figure 2 and Figure 3 As shown, the inner and outer edges of the plug-in direction of the plug-in portion 212 are provided with limiting grooves 213a and 213b, and limiting protrusions 214a and 214b are respectively provided in the limiting grooves 213a and 213b. Similarly, the inner and outer edges of the second plug-in board 23 are provided with limiting grooves 231a and 231b in the plug-in direction, and limiting protrusions 232a and 232b are respectively provided in the limiting grooves 231a and 231b. Moreover, the front ends of the plug-in portion 212 and the second plug-in board 23 are also provided with limiting bosses 215 and 233 respectively. These limiting structures are used for the fixed installation of the limiting shell.

[0030] According to the above embodiment of the present application, the first plug-in board 21, the bridging portion 22, the second plug-in board 23 and the folding portion 24 of the entire terminal body 20 for high-voltage connection are integrally formed in one piece, which increases current conduction and completely avoids the impact of ultrasonic welding with the wire.

[0031] Figure 4 and Figure 5 The overall structure diagram and the exploded structure diagram of a terminal 100 for high voltage connection according to an embodiment of the present application are respectively shown. The terminal 100 for high voltage connection adopts the aforementioned Figure 2 and Figure 3 The terminal body 20 for high voltage connection in the illustrated embodiment. Figure 4 and Figure 5 As shown, the terminal 100 for high voltage connection includes a terminal body 20, a limiting shell 30 and two springs 40. The two springs 40 are respectively installed in the plug-in slot 25 of the terminal body 20 and are electrically connected to the terminal body 20, and are used to elastically contact with the plug-in terminal 60. The limiting shell 30 spans the gap between the plug-in portion 212 of the first plug-in board 21 and the front end of the second plug-in board 23 to be fixed to the terminal body 20, and is used to limit the deformation of the plug-in portion 212 and the second plug-in board 23, and ensure the structural stability of the plug-in slot 25. For details, see Figure 5As shown, the limiting shell 30 includes a first limiting plate 31 and a second limiting plate 33 arranged at intervals and a connecting plate 32 connecting the front ends of the first limiting plate 31 and the second limiting plate 33. The limiting shell 30 covers the front end opening of the plug-in slot 25 and the lower surface of the plug-in portion 212 and the upper surface of the second plug-in plate 23. In order to match the limiting grooves 213a and 213b opened on the inner and outer edges of the plug-in direction of the plug-in portion 212 and the limiting grooves 231a and 231b opened on the inner and outer edges of the second plug-in direction of the second plug-in plate 23, the inner and outer edges of the first limiting plate 31 and the second limiting plate 33 are correspondingly provided with C-shaped limiting claws 311 and 331. The C-shaped limiting claws 311 and 331 are clamped in the corresponding limiting grooves 213a, 213b and 231a, 231b and hook the corresponding limiting protrusions 214a, 214b and 232a, 232b, so as to limit the forward and backward and upward and downward movement of the limiting shell 30. In cooperation with the limiting bosses 233 and 215 protruding from the front end of the second plug-in board 23 and the plug-in portion 212, the connection plate 32 of the limiting housing 30 may also be provided with corresponding limiting holes 321 and 322 for the limiting bosses 233 and 215 to be inserted, so as to further limit the movement of the limiting housing 30. The first limiting plate 31 and the second limiting plate 33 of the limiting housing 30 are also provided with snap-fit ​​springs 312 and 332, respectively, for snap-fitting with the matching sockets in the connector housing through elastic deformation, so as to implant the terminal 100 for high-voltage connection into the connector housing, which is a prior art and will not be described in detail in this application.

[0032] See also Figure 5 As shown, the spring sheet 40 includes a first connecting strip 41 and a second connecting strip 42 arranged at intervals and a plurality of elastic contact sheets 43 connected between the first connecting strip 41 and the second connecting strip 42. The plurality of elastic contact sheets 43 are all arched toward the inside of the plug slot 25, so as to elastically and tightly contact with the plug-in terminal 60 inserted into the plug slot 25 through elastic deformation to achieve electrical connection (see Figure 7 Corresponding to the plurality of rivet posts 26 disposed on the upper surface of the plug-in portion 212 of the terminal body 20 and the relative lower surface of the second plug-in board 23, the first connecting strip 41 of the spring 40 is provided with a plurality of rivet holes 44. The two springs 40 are respectively installed on the rivet posts 26 on the upper surface of the plug-in portion 212 and the lower surface of the second plug-in board 23 through the rivet holes 44 for riveting, so that the two springs 40 can be relatively installed and fixed in the plug-in slot 25 (see Figure 4 shown).

[0033] See also Figure 6 As shown, the terminal 100 for high voltage connection according to the above embodiment of the present application is electrically connected to the wire 50 through the connecting portion 211, and is electrically connected to the plug-in terminal 60 through the plug-in slot 25 and the spring 40 therein, thereby realizing the electrical connection between the plug-in terminal 60 and the wire 50.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A terminal body for high voltage connection, comprising a first plug board, wherein the first plug board has a connection portion for connecting to a wire and a plug-in portion connected to the front end of the connection portion, characterized in that: One side of the plug-in portion of the first plug-in board is folded upward and extended to form a bridging portion, and a second plug-in board is extended from the upper end of the bridging portion to the other side of the plug-in portion, and a plug-in slot is formed in the gap between the second plug-in board and the plug-in portion, and the first plug-in board, the bridging portion and the second plug-in board are integrally formed as one piece.

2. The terminal body for high voltage connection according to claim 1, characterized in that: It also includes a folded portion that is folded downward from the rear end of the second plug-in board and extends toward the upper surface of the first plug-in board; the plug-in portion of the first plug-in board, the second plug-in board, the bridge portion and the folded portion jointly define the plug-in slot.

3. The terminal body for high voltage connection according to claim 1, characterized in that: At least one of the upper surface of the plug-in portion of the first plug-in board and the lower surface of the second plug-in board is provided with a mounting structure for mounting a spring sheet that elastically contacts the mating terminal.

4. The terminal body for high voltage connection according to claim 3, characterized in that: The mounting structure includes a plurality of rivet posts disposed on the outer side of at least one of an upper surface of the plug-in portion and an opposite lower surface of the second plug-in board in a plug-in direction.

5. The terminal body for high voltage connection according to claim 1, characterized in that: The plug-in portion of the first plug-in board and the second plug-in board are also provided with a limiting structure for fixing the limiting shell.

6. The terminal body for high voltage connection according to claim 5, characterized in that: The limiting structure comprises limiting grooves provided at inner and outer edges of the plug-in direction of the plug-in portion and the second plug-in board, and limiting protrusions protruding in the limiting grooves.

7. The terminal body for high voltage connection according to claim 6, characterized in that: The limiting structure also includes a limiting boss protruding from the front ends of the plug-in portion and the second plug-in board.

8. A terminal for high voltage connection, comprising a terminal body and a spring, wherein the terminal body is provided with a plug-in slot, the spring is installed in the plug-in slot and electrically connected to the terminal body, and the spring has a plurality of elastic contact pieces arched toward the plug-in slot to elastically contact with the plug-in terminal, characterized in that: The terminal body is the terminal body for high voltage connection according to any one of claims 1 to 7.

9. The terminal for high voltage connection according to claim 8, characterized in that: It also includes a limit shell spanning the gap between the plug-in part and the front end of the second plug-in board to be fixed to the terminal body, the limit shell having a first limit plate and a second limit plate arranged at intervals and a connecting plate connecting the front ends of the first limit plate and the second limit plate; the limit grooves and limit protrusions arranged on the inner and outer edges in the plug-in direction of the plug-in part and the second plug-in board are matched, and the inner and outer edges of the first limit plate and the second limit plate are correspondingly provided with C-shaped limit claws that are stuck in the limit grooves and hook the limit protrusions.

10. The terminal for high voltage connection according to claim 9, characterized in that: In cooperation with the plug-in portion and the limiting boss protruding from the front end of the second plug-in board, the connecting plate of the limiting shell is provided with limiting holes correspondingly formed on the upper and lower sides for the limiting boss to be inserted.