Electric connection terminal

Abstract

The utility model discloses an electric connection terminal, which comprises a terminal body and an insulating plastic part which are integrated into a whole through injection molding. The terminal body is made of a copper pipe, one end of the copper pipe is flattened to serve as a power connection section, the other end of the copper pipe is a hollow insertion section, a conductive contact surface is formed on the peripheral surface of the insertion section, and a transition connection section with a gradually changing section is formed between the insertion section and the power connection section. The insulating plastic part comprises a positioning part at least wrapping the peripheral side of the whole transition connection section and an inner core part formed in the insertion section, a protection end protruding out of the tail end of the insertion section is integrally connected to the inner core part, and the outer diameter of the protection end is larger than the inner diameter of the insertion section and smaller than the outer diameter of the insertion section. The electric connection terminal is reasonable in structural arrangement, can improve the use safety performance, reduces the manufacturing cost, and has good practicability and generalizability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile connector, concretely relates to an electric connection terminal. BACKGROUND

[0002] In new energy vehicles, it is usually necessary to use automobile connectors to realize the connection between circuits, and the connectors have electric connection terminals, which can ensure the effective transmission of current and guarantee the safety and stability of the circuit, so it is very important to select high-performance automobile connectors and electric connection terminals in the design and manufacturing process of new energy vehicles. The patent document CN116470324A discloses an injection molded connection terminal and a processing method and injection molding equipment thereof, wherein the injection molded connection terminal comprises a cylindrical end and a flat end, the cylindrical end and the flat end are integrally formed, the flat end is formed by stamping, and a connecting hole is formed in the flat end; it also comprises an assembly section, which is located at the connection between the cylindrical end and the flat end, and the assembly section is covered at the connection between the cylindrical end and the flat end by injection molding. However, the injection molded connection terminal in the patent document is processed by using a solid copper bar, the material cost is relatively high, and the outer end of the cylindrical end is directly exposed, which may cause direct contact of fingers and cause electric shock accidents, and there is a safety hazard. SUMMARY

[0003] To this end, the utility model provides an electric connection terminal which is safer to use and can reduce costs.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model provides an electric connection terminal, which comprises a terminal body and an insulating plastic part, and the terminal body and the insulating plastic part are integrally injection molded; the terminal body is made of a copper pipe, one end of the copper pipe is flattened as an electricity connection section, the other end of the copper pipe is a hollow plug-in section, the outer peripheral surface of the plug-in section forms a conductive contact surface, a transition connection section with gradually changing cross section is formed between the plug-in section and the electricity connection section, the insulating plastic part comprises a positioning part covering the entire transition connection section on the outer peripheral side and an inner core part formed in the plug-in section, a protective end head protruding from the end of the plug-in section is integrally connected to the inner core part, the outer diameter of the protective end head is greater than the inner diameter of the plug-in section and not greater than the outer diameter of the plug-in section.

[0006] Preferably, the positioning part extends to the outer periphery of the plug-in section and the outer periphery of the electricity connection section respectively at both ends.

[0007] Preferably, a through hole is provided in the side wall of the transition connection section and / or the plug-in section, and the positioning part and the inner core part are integrally connected at the through hole.

[0008] Preferably, the positioning part is circumferentially provided with positioning clamping grooves, the positioning clamping grooves are arranged axially on the terminal body, and an axial protruding rib is formed between two adjacent positioning clamping grooves.

[0009] Preferably, the positioning part is circumferentially provided with positioning clamping grooves, the positioning clamping grooves are arranged axially on the terminal body, and an axial protruding rib is formed between two adjacent positioning clamping grooves.

[0010] Preferably, the power connection section is provided with a connecting hole penetrating along the thickness direction thereof.

[0011] Preferably, the power connection section is provided with a connecting hole penetrating along the thickness direction thereof.

[0012] Preferably, the outer circumferential surface of the protective end head is a conical surface, the outer diameter of one end of the protective end head connected with the plug-in section is equal to the outer diameter of the plug-in section, and the outer diameter of the other end of the protective end head away from the plug-in section is smaller than the outer diameter of the plug-in section.

[0013] The utility model has the positive effect that: the utility model discloses an electric connection terminal structure is optimized, and the terminal body is made of copper pipe, and the one end is made into the power connection section through the flattening mode, compared with the solid copper bar manufacturing terminal body, the material is more saved, can reduce the material cost, and the inner core part can support the plug-in section, guarantees its compression resistance, and the protective end head is formed at the end of the plug-in section, can play the blocking effect, can avoid the finger and the end of the plug-in section contact, enhances the use safety performance. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following briefly introduces the drawing used in the specific embodiment or prior art description. In the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0015] Figure 1 It is the structural schematic view of the electric connection terminal in the utility model;

[0016] Figure 2 It is the electric connection terminal shown in figure 1; Figure 1 It is the explosion view of the electric connection terminal shown in figure 1;

[0017] Figure 3 It is the electric connection terminal shown in figure 1; Figure 1 It is the electric connection terminal shown in figure 1;

[0018] Figure 4 It is the sectional view along the line A-A in figure 1. Figure 3

[0019] ​The reference numerals shown in the figure are: 1-terminal body; 11-power connection section; 12-plug-in section; 13-conductive contact surface; 14-transition connection section; 15-feed hole; 16-connection hole; 17-positioning notch; 2-insulating plastic part; 21-positioning part; 22-inner core part; 23-protective end; 24-positioning slot; 25-axial rib; 26-positioning ring groove. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present utility model are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore only examples and are not intended to limit the scope of protection of the present utility model.

[0021] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0022] The electrical connection terminal structure of the embodiment of the utility model is as follows Figures 1 to 4 As shown, it includes a terminal body 1 and an insulating plastic part 2, and the terminal body 1 and the insulating plastic part 2 are injection molded as one body; the terminal body 1 is made of a copper tube, one end of the copper tube is flattened as a power connection section 11, and the other end of the copper tube is a hollow plug-in section 12, and the outer peripheral surface of the plug-in section 12 forms a conductive contact surface 13. After the electrical connection terminal is plugged into the female terminal, the inner side of the female terminal is in contact with the conductive contact surface 13 to achieve electrical connection; a transition connection section 14 with a gradual cross-section is formed between the plug-in section 12 and the power connection section 11, and the insulating plastic part 2 includes a positioning portion 21 that at least covers the outer peripheral side of the entire transition connection section 14 and an inner core portion 22 formed inside the plug-in section 12. Since the transition connection section 14 is a gradually changing cross-section The terminal body 1 is made of a copper tube, one end of which is formed into the power connection section 11 by flattening. Compared with the terminal body 1 made of a solid copper rod, this saves material and reduces material costs. The inner core 22 can support the plug section 12 to ensure its compressive strength. The protective end 23 is formed at the end of the plug section 12 to prevent fingers from coming into contact with the end of the plug section 12, thereby enhancing safety. When the electrical connection terminal is installed, the positioning portion 21 of the insulating plastic part 2 is connected to the housing for positioning and fixing.

[0023] like Figure 3 and Figure 4As shown, in order to make the electrical connection terminal and the female terminal more smoothly inserted, the outer circumferential surface of the protective end head 23 is preferably tapered, the outer diameter of the end of the protective end head 23 connected with the insertion section 12 is equal to the outer diameter of the insertion section 12, and the outer diameter of the end of the protective end head 23 away from the insertion section 12 is smaller than the outer diameter of the insertion section 12.

[0024] As shown, in order to further improve the reliability of the electrical connection terminal installation, the two ends of the positioning part 21 extend to the outer circumferences of the insertion section 12 and the electrical connection section 11 respectively, which increases the axial size of the positioning part 21 on the terminal body 1, thereby effectively enhancing the firmness of the positioning installation of the electrical connection terminal. Figure 4

[0025] In order to further enhance the firmness of the combination between the insulating plastic part 2 and the terminal body 1 and improve the convenience of the injection molding process, through-holes 15 are preferably arranged on the side walls of the transition connection section 14 and the insertion section 12, and the positioning part 21 and the inner core part 22 are integrally connected at the through-holes 15. In this way, in the injection molding process, the material can flow between the inside and outside of the terminal body 1 through the through-holes 15, thereby effectively and firmly combining the insulating plastic part 2 with the terminal body 1. In actual operation, the through-holes 15 can also be arranged only on the side walls of the transition connection section 14 or the insertion section 12.

[0026] In order to facilitate the positioning connection between the positioning part 21 and the shell, positioning clamping grooves 24 are arranged on the positioning part 21 in a circumferential direction, the positioning clamping grooves 24 are arranged in an axial direction of the terminal body 1, and axial protrusions 25 are formed between adjacent two positioning clamping grooves 24. When the electrical connection terminal is assembled with the shell, the positioning clamping grooves 24 are matched with protrusions on the shell, and the axial protrusions 25 are matched with recesses on the shell, thereby effectively limiting the electrical connection terminal in a circumferential direction. Furthermore, in order to enhance the reliability of the fixation of the electrical connection terminal in the shell, positioning ring grooves 26 are arranged on the positioning part 21 in a circumferential direction. The positioning ring grooves 26 are clamped with buckles in the shell, thereby enhancing the axial positioning effect of the electrical connection terminal.

[0027] In order to facilitate the connection between the electrical connection section 11 and external components (such as wires, busbars, etc.), connection holes 16 are arranged on the electrical connection section 11 in a thickness direction thereof, and fastening bolts are locked and connected with the external components through the connection holes 16.

[0028] Furthermore, in order to enhance the positioning of the electrical connection terminal, positioning notches 17 can also be arranged on one side edge of the electrical connection section 11. The positioning notches 17 can be clamped with corresponding protrusions in the shell.

[0029] ​Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation manners of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation manners. The obvious changes or variations extended from the essential spirit of the present application still belong to the protection scope of the present application.

Claims

1. An electrical connection terminal, comprising a terminal body (1) and an insulating plastic part (2), wherein the terminal body (1) and the insulating plastic part (2) are injection molded into one piece; characterized in that: The terminal body (1) is made of a copper tube, one end of the copper tube is flattened to form a power connection section (11), and the other end of the copper tube is a hollow plug section (12), the outer peripheral surface of the plug section (12) forms a conductive contact surface (13), and a transition connection section (14) with a gradually changing cross section is formed between the plug section (12) and the power connection section (11), and the insulating plastic part (2) includes a positioning portion (21) at least covering the outer peripheral side of the entire transition connection section (14) and an inner core portion (22) formed inside the plug section (12), and a protective end head (23) protruding from the end of the plug section (12) is integrally connected to the inner core portion (22), and the outer diameter of the protective end head (23) is larger than the inner diameter of the plug section (12) and not larger than the outer diameter of the plug section (12).

2. The electrical connection terminal according to claim 1, wherein: Both ends of the positioning portion (21) extend to the outer periphery of the plug section (12) and the outer periphery of the power connection section (11), respectively.

3. The electrical connection terminal according to claim 2, characterized in that: A feeding hole (15) is provided through the side wall of the transition connecting section (14) and / or the plug-in section (12), and the positioning portion (21) and the inner core portion (22) are connected as a whole at the feeding hole (15).

4. The electrical connection terminal according to claim 1, wherein: Positioning slots (24) are arranged at intervals along the circumferential direction on the positioning portion (21); the positioning slots (24) are arranged axially along the terminal body (1); and an axial rib (25) is formed between two adjacent positioning slots (24).

5. The electrical connection terminal according to claim 1, wherein: A positioning ring groove (26) is circumferentially arranged on the positioning portion (21).

6. The electrical connection terminal according to claim 1, wherein: The power connection section (11) is provided with a connection hole (16) penetrating along the thickness direction thereof.

7. The electrical connection terminal according to claim 1, characterized in that: A positioning notch (17) is provided at one side edge of the power connection section (11).

8. The electrical connection terminal according to claim 1, wherein: The outer peripheral surface of the protective end head (23) is a conical surface. The outer diameter of the end of the protective end head (23) connected to the plug section (12) is equal to the outer diameter of the plug section (12). The outer diameter of a section of the protective end head (23) away from the plug section (12) is smaller than the outer diameter of the plug section (12).

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