Self-locking large-current connector

Abstract

The utility model provides a self-locking type heavy current connector, which comprises a plastic body and a terminal, the terminal comprises a puncture clamping head, and an assembly groove body of the plastic body is internally provided with an assembly step. According to the utility model, on the premise of ensuring large current transmission, stable assembly of the terminal in the plastic body is realized through the puncturing clamping head arranged on the terminal and the assembly step on the side wall of the assembly groove body; and through the arrangement of the profiling block, the possible shaking of the terminal in the plastic body is avoided, and the stability of terminal assembly is further ensured.

Description

Technical Field

[0001] The utility model relates to the field of electronic connectors, in particular to a self-locking high-current connector. Background Art

[0002] Existing high-current connectors are generally composed of terminals that provide high-current transmission as conductors, and plastics that act as insulation and retention. Because the application scenarios are mostly large-scale network equipment for communication or data processing, which requires support for high-current transmission, the required connector size is large, and the current-carrying capacity requirements of the terminal conductors are relatively high, and the corresponding size will also be relatively large, so the retention between the corresponding terminals and the plastic is more important. Currently, the terminal is generally fixed inside the plastic body using an additional TPA (plastic part or metal part), that is, a locating pin to hold the terminal. However, metal locating pins have electrical safety hazards, and plastic locating pins usually need to be designed with a larger size to maintain sufficient strength, but this will affect the product size and occupy internal space. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a self-locking high-current connector.

[0004] The main contents of this utility model include:

[0005] A self-locking high-current connector comprises a plastic body and terminals symmetrically arranged within the plastic body; the plastic body comprises a plastic main body portion, the plastic main body portion being penetrated by two assembly slots; an assembly step is provided on at least one side wall of a single assembly slot; a single terminal comprises a terminal main body portion and a terminal contact portion extending above the terminal main body portion; the terminal contact portions of the two terminals constitute a receiving portion for receiving terminals of a mating connector; at least one piercing clamp is provided on the terminal main body portion; when the terminal is arranged in the corresponding assembly slot, the piercing clamp is embedded in the assembly step.

[0006] Preferably, a single terminal further includes at least one cantilever portion, wherein the cantilever portion is formed by extending downward from the lower end surface of the terminal body portion and being bent 180 degrees; and the piercing clamp is arranged on the upper portion of the cantilever portion.

[0007] Preferably, an assembly guide surface is provided on the side wall of the assembly groove below the assembly step.

[0008] Preferably, there are two cantilever portions, which are respectively formed on both sides of the lower end surface of the terminal main body.

[0009] Preferably, a cable connection portion extends downward from the middle portion of the lower end surface of the terminal main body.

[0010] Preferably, when the terminal is assembled in the assembly slot, the terminal body forms a certain angle with the vertical direction, and a profiling block is protruded on at least one side wall of the assembly slot, and the corresponding surface of the terminal body fits with the profiling block.

[0011] Preferably, the terminal contact portion includes a plurality of terminal elastic arms, and the terminal elastic arms of the two terminals are bent in a direction approaching each other and a contact head is formed at the bent end thereof.

[0012] Preferably, at least two plastic walls are protruding above the plastic main body, and the terminal contact portions are located on the inner sides of the corresponding plastic walls.

[0013] Preferably, the mutually facing surfaces of the plastic walls are provided with limiting grooves to limit the contact head below the end surface of the plastic wall.

[0014] Preferably, matching guide surfaces are provided on the upper ends of the mutually facing surfaces of the two plastic walls.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the self-locking high-current connector proposed by the present invention, under the premise of ensuring high current transmission, realizes the stable assembly of the terminal in the plastic body through the piercing clamp set on the terminal and the assembly step on the side wall of the assembly groove; through the setting of the profiling block, the possible shaking of the terminal in the plastic body is avoided, thereby further ensuring the stability of the terminal assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 for Figure 2 Cross-sectional view of middle AA;

[0019] Figure 4 for Figure 2 Cross-section of the middle BB;

[0020] Figure 5 is a three-dimensional cross-sectional view of a plastic body;

[0021] Figure 6 It is a structural diagram of the terminal;

[0022] Reference numerals:

[0023] 1-Plastic body; 10-Plastic main body; 100-Assembly slot; 101-Assembly step; 102-Assembly guide surface; 103-Profiling block; 11-Plastic wall; 110-Limiting slot; 111-Matching guide surface;

[0024] 2-terminal; 20-terminal body; 200-receiving portion; 21-terminal contact portion; 21a-terminal bullet arm; 210-contact head;

[0025] 22-cantilever part; 220-puncture clamp; 23-cable connection part;

[0026] 3- Cables. DETAILED DESCRIPTION

[0027] The technical solution protected by the present utility model is described in detail below with reference to the accompanying drawings.

[0028] For existing cable connectors, the terminals are usually fixed in the plastic body with the help of TPA, which requires many parts, complicated assembly and results in a larger product size. The self-locking high-current connector proposed in the utility model eliminates the TPA fixing method and reduces the assembly parts. It can not only ensure the reliability and stability of the terminal assembly, but also reduce the overall size of the connector to a certain extent.

[0029] See also Figures 1 to 6 The present invention proposes a self-locking high-current connector, comprising a plastic body 1 and a terminal 2 arranged in the plastic body; wherein the plastic body 1 includes a plastic main body 10, and the plastic main body 10 is penetrated by a mounting groove 100 for mounting the terminal 2; and the terminal 2 includes a terminal main body 20 and a terminal contact portion 21 extending above the terminal main body 20; an assembly step 101 is provided on at least one side wall of the assembly groove; correspondingly, at least one piercing clamp 220 is provided on the terminal main body 20; so that when the terminal 2 is arranged in the corresponding assembly groove 100, the piercing clamp 21 is embedded in the assembly step 101.

[0030] In order to further ensure the stability of the terminal assembly, when the terminal 2 is assembled in the assembly groove 100, the terminal main body 20 is at a certain angle to the vertical direction, that is, it is bent and tilted. At the same time, a protruding imitation block 103 is provided on at least one side wall of the assembly groove 100, so that the corresponding surface of the terminal main body 20 can be fitted with the imitation block 103. Through this fitting arrangement, the terminal main body 20 can maintain an inclined angle in the assembly groove 100, and the piercing clamp 21 can be stably embedded in the assembly step, thereby avoiding possible shaking of the terminal in the assembly groove 100.

[0031] In order to reduce the resistance to the terminal being assembled into the assembly slot 100, the terminal 2 further includes at least one cantilever portion 22, which is formed by extending downward from the lower end surface of the terminal main body 20 and being bent 180 degrees. The piercing clamp 220 is arranged on the upper portion of the cantilever portion 22, and an assembly guide surface 102 is provided on the side wall of the assembly slot 100 below the assembly step 101. When the terminal 2 is inserted into the assembly slot 100, the cantilever portion 22 is squeezed and deformed along the assembly guide surface 102, thereby smoothly inserting into the assembly slot 100. Once inserted into place, the squeezing force of the assembly slot 100 on the cantilever portion 22 disappears, allowing the piercing clamp 21 to be clamped on the assembly step 101.

[0032] Furthermore, the terminal contact portion 21 includes a plurality of terminal bullet arms 21a, and the number of the terminals 2 is two, which are symmetrically assembled in the plastic body 1, that is, two assembly slots 100 are provided in the plastic body 1, and the two terminals are respectively engaged with the corresponding assembly steps 101 by piercing the clamping head 220, and the terminal bullet arms 21a of the two terminals are bent in a direction close to each other and a contact head 210 is formed at their ends to form a receiving portion 200 for accommodating the plug-in connector; in order to transmit large current, the terminal main body 20 is plate-shaped and adopts a copper alloy material with high conductivity and a thickness of 1.0 mm, and the corresponding plug-in connector can be a common plate-shaped terminal.

[0033] In one embodiment, there are two cantilever portions 22, one on each side of the lower end surface of the terminal body 20, and both located on the outside of the terminal body 20. The corresponding contoured blocks 103 fit closely with the inner surface of the terminal body 20. A cable connection portion 23 extends downward from the middle of the lower end surface of the terminal body 20 to achieve electrical connection with the cable.

[0034] In order to ensure the positive force of the terminal contact portion 21, at least two plastic walls 11 are protruded above the plastic main body 10 to surround the terminal contact portion 21 on the inner side of the corresponding plastic wall 11; when the plug-in connector is inserted and the terminal contact portion 21 is deformed outward, the plastic wall 11 can play a certain limiting role.

[0035] Furthermore, limiting grooves 110 are provided on the mutually facing surfaces of the plastic walls 11 to limit the contact head 210 below the end surface of the plastic wall 11 .

[0036] In addition, a matching guide surface 111 is formed on the upper ends of the mutually facing surfaces of the two plastic walls 11 .

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-locking high current connector, characterized in that: It comprises a plastic body and a terminal arranged in the plastic body; the plastic body comprises a plastic main body portion, and the plastic main body portion is penetrated by an assembly slot; an assembly step is provided on at least one side wall of the assembly slot; the terminal comprises a terminal main body portion and a terminal contact portion extending above the terminal main body portion; at least one piercing clamp is provided on the terminal main body portion; when the terminal is arranged in the corresponding assembly slot body, the piercing clamp is embedded in the assembly step.

2. A self-locking high current connector according to claim 1, characterized in that: The terminal further comprises at least one cantilever portion, which is formed by extending downward from the lower end surface of the terminal main body and bending 180 degrees; the piercing clamp is arranged on the upper part of the cantilever portion.

3. A self-locking high current connector according to claim 2, characterized in that: An assembly guide surface is provided on the side wall of the assembly groove body below the assembly step.

4. The self-locking high current connector according to claim 2, characterized in that: There are two cantilever parts, which are respectively formed on both sides of the lower end surface of the terminal main body.

5. The self-locking high current connector according to claim 3, characterized in that: A cable connecting portion extends downward from the middle portion of the lower end surface of the terminal main body.

6. A self-locking high current connector according to any one of claims 1 to 5, characterized in that: When the terminal is assembled in the assembly slot, the terminal body forms a certain angle with the vertical direction, and a profiling block is protruded on at least one side wall of the assembly slot, and the corresponding surface of the terminal body fits with the profiling block.

7. A self-locking high current connector according to any one of claims 1 to 5, characterized in that: There are two terminals, which are symmetrically arranged in corresponding assembly slots; the terminal contact portions of the two terminals constitute receiving portions for receiving terminals of a mating connector; The terminal contact portion includes a plurality of terminal elastic arms. The terminal elastic arms of the two terminals are bent in a direction of approaching each other and a contact head is formed at the end thereof.

8. The self-locking high current connector according to claim 7, characterized in that: At least two plastic walls are protruding above the plastic main body, and the terminal contact portions are located on the inner sides of the corresponding plastic walls.

9. The self-locking high-current connector according to claim 8, characterized in that: Limiting grooves are provided on mutually facing surfaces of the plastic walls to limit the contact head below the end surface of the plastic wall.

10. The self-locking high current connector according to claim 8, characterized in that: Matching guide surfaces are provided on the upper ends of the mutually facing surfaces of the two plastic walls.

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