CN112615179A

CN112615179A - Fisheye terminal

Info

Publication number: CN112615179A
Application number: CN202011433535.XA
Authority: CN
Inventors: 产起平; 王凯锋
Original assignee: Hefei Zhongheng Micro Semiconductor Co ltd
Current assignee: Hefei Zhongheng Micro Semiconductor Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-04-06

Abstract

The invention discloses a fisheye terminal which comprises a main body part and a plug part arranged at the end part of the main body part, wherein the plug part is of a symmetrical four-pin structure with the end part folded, supporting legs of the four-pin structure are all bent, and when the plug part is inserted into a PCB hole, the outer side cambered surface of each supporting leg of the four-pin structure is pressed against the inner wall of the PCB hole. This terminal, through the appearance design to terminal plug portion, when the terminal inserts the PCB hole, the terminal has four contact points with the hole, during the extrusion, the PCB hole can be to evenly being out of shape all around, avoid the PCB hole to warp too big and damage the PCB board towards a direction, through four point contacts, can play a corrective action to the terminal position, guarantee that terminal center PCB hole aligns, and four stabilizer blades are the bending form, can be better with the terminal leading-in to PCB downthehole, avoid producing hard interference, the practicality is stronger.

Description

Fisheye terminal

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a fisheye terminal.

Background

With the rapid development and popularization of new energy automobiles, the requirements on an automobile electrical system are higher and higher, an electronic connector is a key component for power and signal transmission, and the performance of the whole electrical system is directly influenced by the quality of the connector, so that people pay more and more attention to the reliability of the electronic connector.

In the field of electronic connectors, fisheye terminals are more and more widely applied and have the characteristics of small insertion force, short process, vibration resistance, tolerance compensation, small damage to holes of printed circuit boards and the like. When the IGBT module is in practical use, one end of the IGBT module is connected with the PCB in a crimping mode, the other end of the IGBT module is welded on the DBC surface in the IGBT module in a reflow soldering mode, a circuit channel is formed, and signal transmission is achieved.

An existing fisheye terminal, for example, the fisheye terminal disclosed in patent No. 202010923768.1, has a flat insertion portion at its end, and when the fisheye terminal is inserted into a PBC hole, because the inner wall of the PBC hole is stressed unevenly, the PBC hole expands unevenly to the periphery, and the PCB hole may deform too much in one direction to damage the PCB board, so that a targeted improvement design is required.

Disclosure of Invention

The present invention is directed to a fisheye terminal, which is used to solve the above problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a fisheye terminal, includes the main part and sets up in the plug portion of main part tip, plug portion is the symmetrical four-pin structure that the tip was drawn in, and the stabilizer blade of four-pin structure is the crook, and when plug portion inserted the PCB hole, the stabilizer blade outside cambered surface and the downthehole wall of PCB of four-pin structure supported and pressed.

Preferably, the main body portion includes a support rod connected to one end of the plug portion and a bent portion fixedly mounted to the other end of the support rod.

Preferably, the support rod is cylindrical.

Preferably, a limiting block used for limiting the deformation amplitude of the bending part is fixedly arranged in the concave surface of the bending part.

The invention has the technical effects and advantages that: the fish-eye terminal is provided with a fish-eye terminal,

1. set up plug portion into the symmetry four-pin structure that the tip draws in, and the stabilizer blade of four-pin structure is the bending form, it is downthehole to guarantee that plug portion inserts the PCB, the PCB hole can be to evenly being out of shape all around, avoid the PCB hole to warp too big and damage the PCB board towards a direction, through four-point contact, can play a corrective action to the terminal position, guarantee that terminal center PCB pore pair is neat, and the surface design of four stabilizer blades is the arc surface, can be better with the terminal leading-in to PCB downthehole, avoid producing hard interference.

2. Through setting up the flexion when the extrusion terminal, provide certain cushion effect, when avoiding the PCB board to push down, produce the damage to DBC's ceramic layer because of pressure is too big.

3. Set up the stopper at the concave surface of flexion, avoid the too big condition that causes to take place plastic deformation of kink bending range, reinforcing practicality.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a body portion; 101. a support bar; 102. a bending section;

2. a plug portion; 3. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a fisheye terminal as shown in figure 1, which comprises a main body part 1 and a plug part 2 arranged at the end part of the main body part 1, wherein the plug part 2 is of a symmetrical four-pin structure with a furled end part, and supporting legs of the four-pin structure are all bent, and when the plug part 2 is inserted into a PCB hole, the outer side cambered surface of each supporting leg of the four-pin structure is pressed against the inner wall of the PCB hole.

Set up plug portion 2 into the dead angle structure that the tip draws in, and every stabilizer blade is crooked form, when making the terminal insert the PCB hole, the terminal has four contact points with the hole, during the extrusion, the PCB hole can be to evenly warping all around, avoid the PCB hole to warp too big and damage the PCB board towards a direction, through four-point contact, can play a corrective action to the terminal position, guarantee that terminal center PCB pore pair is neat, and the surface design of four stabilizer blades is the arc surface, can be better with the terminal leading-in to the PCB downthehole, avoid producing hard interference, practicality and stability are stronger.

The main body 1 includes a support rod 101 connected to one end of the plug 2 and a bent portion 102 fixedly mounted to the other end of the support rod 101. Through setting up kink 102, when the extrusion terminal, provide certain cushion power, avoid when the PCB board pushes down, produce the damage to the ceramic layer of DBC because of the pressure is too big.

The support rod 101 is cylindrical. The overall rigidity of the terminal is ensured.

A limiting block 3 for limiting the deformation range of the bending portion 102 is fixedly arranged in the concave surface of the bending portion 102, and the top of the bending portion 102 is arranged above the free end of the limiting block 3. The condition that the bending amplitude of the bending part 102 is too large to cause plastic deformation when the terminal is plugged is avoided, and the practicability is enhanced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A fisheye terminal, characterized in that: including main part (1) and set up in plug portion (2) of main part (1) tip, plug portion (2) are the symmetrical four-pin structure that the tip was drawn in, and the stabilizer blade of four-pin structure is the bending form, and when plug portion (2) inserted the PCB hole, the stabilizer blade outside cambered surface and the downthehole wall of PCB of four-pin structure supported and pressed.

2. The fisheye terminal of claim 1, wherein: the main body part (1) comprises a supporting rod (101) connected with one end of the plug part (2) and a bending part (102) fixedly installed at the other end of the supporting rod (101).

3. The fisheye terminal of claim 2, wherein: the support rod (101) is cylindrical.

4. A fish-eye terminal as claimed in claim 3, wherein: the bending part (102) is provided with a concave surface, a limiting block (3) used for limiting the deformation amplitude of the bending part (102) is fixedly arranged in the concave surface of the bending part (102), and the top of the bending part (102) is arranged above the free end of the limiting block (3).