CN213026594U

CN213026594U - Electrical connector

Info

Publication number: CN213026594U
Application number: CN202022210310.XU
Authority: CN
Inventors: 陈昌耀; 孙运松; 吴祝平; 方志宏
Original assignee: Drapho Electronics Technology Co ltd
Current assignee: Drapho Electronics Technology Co ltd
Priority date: 2020-10-02
Filing date: 2020-10-02
Publication date: 2021-04-20
Anticipated expiration: 2030-10-02

Abstract

The utility model provides an electric connector, including insulator, terminal, cladding metal casing on insulator and install in the position fixing cover body of insulator rear end, electric connector is still including cover in metal top cap on metal casing and the position fixing cover body, metal top cap be equipped with a circuit board fixed connection's fixed plate and downwardly extending in order to insert spacing foot in the circuit board. Compared with the prior art, the utility model discloses a set up spacing foot on metal top cap, utilize the location of mutually supporting in spacing hole of predetermineeing on spacing foot and the circuit board, precision when can improving the installation to the circuit board on, it is spacing to have realized effectual position, and reducible or avoid its in-process that installs to the circuit board to take place the offset, has guaranteed that the elasticity trailing arm of terminal can realize reliable and stable electrical contact with the circuit board.

Description

Electrical connector

Technical Field

The utility model relates to an electric connection field especially relates to an electric connector.

Background

With the development trend of miniaturization and lightness of consumer electronic products such as notebook computers, tablet computers, mobile phones and the like, the requirements on the design and manufacturing process of parts of the consumer electronic products are higher and higher, and as the products are lighter and thinner day by day, the internal space of the consumer electronic products becomes very narrow, so that the requirement that the internal parts of the consumer electronic products must adopt a dense layout is required, the volume of each electronic part is smaller and thinner, and the requirements on the aspects of manufacturing process, mounting precision, product connection reliability and the like are higher and higher. For example, in a USB connector, the tail portion of the terminal is often designed to be of a spring-leaf type, i.e., the tail portion of the terminal extends out of the rear end of the connector to form a resilient contact arm, and the resilient contact arm is in contact with a connection Pad (Pad) on a printed circuit board PCB in a resilient contact manner. This kind of mode is very high to the control requirement of precision, and when the connector was fixed with the circuit board, the terminal afterbody was hardly by accurate location to the connection pad, and very easy the stability that causes the contact unstability, influences the connection performance of connector.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric connector to improve the installation accuracy when installing to the circuit board, thereby improve the connection stability of product.

In order to solve the technical problem, the utility model adopts the following technical scheme: an electric connector comprises an insulating body, a terminal, a metal shell coated on the insulating body and a positioning cover body arranged at the rear end of the insulating body, and further comprises a metal top cover covering the metal shell and the positioning cover body, wherein the metal top cover is provided with a fixed plate fixedly connected with a circuit board and limiting pins extending downwards to be inserted into the circuit board.

Furthermore, the fixing plate extends horizontally and is provided with a fixing hole fixedly connected with the circuit board; the limiting feet vertically extend downwards to be inserted into a preset limiting hole in the circuit board, and can move in the limiting hole in the front-back and left-right directions.

Furthermore, the metal top cover is provided with a front cover plate covering the metal shell and a rear cover plate covering the positioning cover body, and the fixing plates comprise a pair of front fixing plates bent and extended from two sides of the front cover plate and a pair of rear fixing plates bent and extended from two sides of the rear cover plate.

Furthermore, the limiting pin is formed by bending downwards from one side edge of the rear fixing plate, and the limiting pin is positioned between the front fixing plate and the rear fixing plate.

Furthermore, the metal shell is provided with a top wall, an elastic sheet protruding downwards is formed on the top wall, and the front cover plate is provided with a yielding notch located right above the elastic sheet so as to provide an upward elastic deformation space for the elastic sheet.

Furthermore, the insulation body is provided with a base part and a pair of mounting arms extending backwards from the base part, the mounting arms upwards support the positioning cover body, the mounting arms are provided with limiting arms protruding upwards, and the positioning cover body is provided with notches matched with the limiting arms.

Furthermore, the outer wall surface of the limiting arm is provided with a convex block protruding outwards, and two sides of the rear cover plate are provided with clamping plates matched with the convex block in a clamping mode.

Furthermore, the metal shell is provided with a rectangular frame, and the positioning cover body is located outside the rectangular frame.

Furthermore, the terminal is provided with a contact arm positioned in the rectangular frame and an elastic tail arm extending out of the rectangular frame, and the elastic tail arm is positioned under the positioning cover body.

Furthermore, the elasticity trailing arm is the slope downwardly extending to the surface of butt to the circuit board, and the elasticity trailing arm is equipped with the end of having certainly that is the V type.

Compared with the prior art, the utility model discloses a set up spacing foot on metal top cap, utilize the location of mutually supporting in spacing hole of predetermineeing on spacing foot and the circuit board, precision when can improving the installation to the circuit board on, it is spacing to have realized effectual position, and reducible or avoid its in-process that installs to the circuit board to take place the offset, has guaranteed that the elasticity trailing arm of terminal can realize reliable and stable electrical contact with the circuit board.

Drawings

Fig. 1 is a perspective view of the electrical connector of the present invention.

Fig. 2 is a schematic diagram of the electrical connector according to the present invention when the metal cap is removed.

Fig. 3 is a schematic view of the bottom surface of the electrical connector according to the present invention facing upward.

Fig. 4 is an exploded view of the electrical connector of the present invention.

Fig. 5 is a schematic view of the combination of the insulating body and the terminal of the electrical connector according to the present invention.

Detailed Description

Referring to fig. 1 to 5, the present invention provides an electrical connector, which includes an insulating housing 10, a plurality of terminals 20 housed in the insulating housing 10, a metal shell 30 covering the surface of the insulating housing 10, a positioning cover 40 installed at the rear end of the insulating housing 10, and a metal top cover 50 covering the surface of the positioning cover 40.

The insulating body 10 is provided with a base 11, a butt tongue plate 12 extending forward from the base 11, and a pair of mounting arms 13 extending backward from the base 11, wherein the base 11 and the butt tongue plate 12 are provided with a plurality of terminal slots 14 for accommodating the terminals 20, a reinforcing member 15 is further embedded in the base 11, the reinforcing member 15 is in a long strip shape and extends from one side of the base 11 to the other side of the base 11, the reinforcing member 15 is provided with a long strip-shaped linear arm 151 and a pair of bent arms 152 formed by bending two ends of the linear arm 151, and the reinforcing member 15 is completely embedded in the base 11. The tongue-shaped mating plate 12 extends forward from the base 11, and a plurality of terminal grooves 14 are formed on the upper and lower surfaces thereof. The pair of mounting arms 13 are parallel to each other and used for supporting the positioning cover body 40, and the mounting arms 13 are further provided with limiting arms 16 which protrude upwards and vertically and used for clamping the positioning cover body 40 to achieve position limiting, and the outer wall surfaces of the limiting arms 16 are further provided with protruding blocks 17 protruding outwards and used for clamping and fixing with the metal top cover 50.

The terminal 20 has a contact arm 21 extending to the surface of the tongue plate 12, a fixed arm 22 fixed to the base 11, and an elastic tail arm 23 extending from the rear end of the fixed arm 22, wherein the elastic tail arm 23 extends obliquely downward to abut against the surface of the circuit board 200. The free end 231 of the resilient tail arm 23 is V-shaped.

The metal shell 30 has a rectangular frame surrounding the mating tongue plate 12 to form a plug cavity for inserting the mating electrical connector. The metal case 30 is provided with a top wall 31 and a bottom wall 32 parallel to each other and a pair of side walls 33. The top wall 31 is provided with a pair of through holes 34 and a spring plate 35 located in the through holes 34, and the spring plate 35 protrudes downwards into the plugging cavity to provide a clamping force after butt joint.

The positioning cover 40 is located at the rear end of the insulating body 10 and outside the metal housing 30, the top surface of the positioning cover 40 is a flat surface, the bottom surface of the positioning cover is provided with a plurality of downwardly protruding partition rails 41, and the left and right sides of the positioning cover 40 are provided with notches 42 for clamping the limiting arm 16 to realize position positioning. The positioning cover 40 covers the terminal 20 above the elastic tail arm 23 to cover it.

The metal top cover 50 extends along the front-back direction, and is provided with a front cover plate 51 covering the metal shell 30 and a rear cover plate 52 covering the positioning cover body 40, the front cover plate 51 and the rear cover plate 52 are of an integral connecting structure, wherein the left side and the right side of the front cover plate 51 are outwards bent to form a pair of front fixing plates 511, the left side and the right side of the rear cover plate 52 are outwards bent to form a pair of rear fixing plates 521, the front fixing plates 511 and the rear fixing plates 521 horizontally extend, and fixing holes 53 are formed in the surfaces of the front fixing plates 511 and the rear fixing plates 521 and used for being fixedly connected with screw holes 202 on the circuit board. And two sides of the rear cover plate 52 are also provided with snap plates 55 which are in snap fit with the bumps 17. In order to increase the location precision, metal top cap 50 still is equipped with downwardly extending's spacing foot 54, spacing foot 54 card is held in the spacing downthehole 201 of predetermineeing on circuit board 200 to it is spacing to realize metal top cap 50's position, and at the in-process that electric connector installed to circuit board 200, can effectively reduce electric connector's skew, improves the elasticity trailing arm 23 of terminal 20 and circuit board 200's butt joint precision.

In addition, in order to facilitate the elastic displacement of the elastic sheet 35 on the top wall 31 of the metal shell 30 from top to bottom, the front cover plate 51 is further provided with a yielding notch 512, and the yielding notch 512 is located right above the elastic sheet 35 and provides a yielding space for the upward displacement movement of the elastic sheet 35. The rear cover plate 52 covers the entire top surface of the positioning housing 40. In the preferred embodiment of the present invention, the limiting feet 54 are formed on the rear cover plate 52 and are formed by bending downward from the edge of the rear fixing plate 521 of the rear cover plate 52, and of course, the limiting feet 54 can also be formed on the front fixing plate 511 of the front cover plate 51.

To sum up, the utility model discloses a set up spacing foot 54 on metal top cap 50, utilize the location of mutually supporting of spacing hole 201 of predetermineeing on spacing foot 54 and the circuit board 200, the precision when can improving to installing to circuit board 200 is spacing, has realized that effectual position is spacing, and reducible or avoid its in-process that installs to circuit board 200 takes place the offset, has guaranteed that the elasticity trailing arm 23 of terminal 20 can realize reliable and stable electrical contact with circuit board 200.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the technical solution of the present invention without departing from the scope of the technical solution of the present invention.

Claims

1. An electric connector comprises an insulating body, a terminal, a metal shell coated on the insulating body and a positioning cover body arranged at the rear end of the insulating body, and is characterized in that the electric connector further comprises a metal top cover covering the metal shell and the positioning cover body, and the metal top cover is provided with a fixed plate fixedly connected with a circuit board and limiting pins extending downwards to be inserted into the circuit board.

2. The electrical connector of claim 1, wherein: the fixing plate extends horizontally and is provided with a fixing hole fixedly connected with the circuit board; the limiting feet vertically extend downwards to be inserted into a preset limiting hole in the circuit board, and can move in the limiting hole in the front-back and left-right directions.

3. The electrical connector of claim 2, wherein: the metal top cover is provided with a front cover plate covering the metal shell and a rear cover plate covering the positioning cover body, and the fixing plates comprise a pair of front fixing plates extending from two sides of the front cover plate in a bending mode and a pair of rear fixing plates extending from two sides of the rear cover plate in a bending mode.

4. The electrical connector of claim 3, wherein: the limiting pin is formed by bending downwards from the edge of one side of the rear fixing plate, and the limiting pin is positioned between the front fixing plate and the rear fixing plate.

5. The electrical connector of claim 4, wherein: the metal shell is provided with a top wall, an elastic sheet protruding downwards is formed on the top wall, and the front cover plate is provided with a yielding notch located right above the elastic sheet so as to provide an upward elastic deformation space for the elastic sheet.

6. The electrical connector of claim 5, wherein: the insulation body is provided with a base part and a pair of mounting arms extending backwards from the base part, the mounting arms upwards support the positioning cover body, the mounting arms are provided with limiting arms protruding upwards, and the positioning cover body is provided with notches matched with the limiting arms.

7. The electrical connector of claim 6, wherein: the outer wall surface of the limiting arm is further provided with a convex block protruding outwards, and the two sides of the rear cover plate are further provided with buckling plates matched with the convex block in a buckling mode.

8. The electrical connector of claim 7, wherein: the metal shell is provided with a rectangular frame body, and the positioning cover body is located outside the rectangular frame body.

9. The electrical connector of claim 8, wherein: the terminal is provided with a contact arm positioned in the rectangular frame and an elastic tail arm extending out of the rectangular frame, and the elastic tail arm is positioned under the positioning cover body.

10. The electrical connector of claim 9, wherein: the elasticity trailing arm is slope downwardly extending to the surface of butt to the circuit board, just the elasticity trailing arm is equipped with the free end that is the V type.