CN215989344U

CN215989344U - Electrical connector

Info

Publication number: CN215989344U
Application number: CN202122292132.4U
Authority: CN
Inventors: 吴永发; 常玉婷; 吴祝平; 方志宏
Original assignee: Drapho Electronics Technology Co ltd
Current assignee: Drapho Electronics Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-08
Anticipated expiration: 2031-09-23

Abstract

The utility model provides an electric connector which comprises an insulating body, a plurality of terminals arranged on the insulating body and a pair of metal fixing pieces fixed at two ends of the insulating body, wherein the insulating body is provided with a main body part extending longitudinally and a pair of limiting parts extending forwards from two longitudinal ends of the main body part, the limiting parts are provided with limiting concave holes, the metal fixing pieces are provided with a main arm covering the limiting parts, a front end mounting arm extending forwards from the front end of the main arm to exceed the limiting parts and a rear end mounting arm extending backwards from the rear end of the main arm, the main arm is provided with a folding piece extending downwards in a bending way, and the folding piece is inserted into the limiting concave holes. Compared with the prior art, the structure of the metal fixing piece is optimized, the folding piece with the barb and the rear end mounting arm can be stably and reliably fixedly connected with the insulating body, and the front end mounting arm and the rear end mounting arm are welded and fixed with the circuit board, so that the metal fixing piece, the insulating body and the circuit board form a reliable and firm connection relationship.

Description

Electrical connector

Technical Field

The utility model relates to the field of electrical connection, in particular to an electrical 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 is very narrow, so that the requirement that the internal parts of the consumer electronic products are required to adopt a dense layout is met, the volume of each electronic part is smaller and thinner, and the requirements on the reliability of the manufacturing process and the connection of the consumer electronic products are higher and higher. The conventional electrical connector generally includes an insulative housing, a conductive terminal, and a metal member (e.g., a metal shell, a metal fixing member) mounted on the insulative housing, wherein the metal member is used for protecting the insulative housing and shielding external signals, and is generally soldered to the circuit board to fix the insulative housing on the circuit board. However, the electrical connector and the circuit board often need a sufficient connection force to ensure that the electrical connector can be reliably connected to the circuit board even when the electrical connector is frequently plugged or unplugged. For some electric connectors with special sizes or special structures, the bonding force between the existing metal piece and the insulating body is not firm enough, so that the welding part of the metal piece is easy to tilt, the welding between the welding part and the circuit board is unstable, empty welding is easy to cause, the problems of plugging failure, poor contact and the like can be caused under the condition, and the risk of falling off of the metal piece exists.

SUMMERY OF THE UTILITY MODEL

The present invention provides an electrical connector to improve the problem of poor bonding force between the metal member and the insulating body, and between the metal member and the circuit board in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: an electric connector comprises an insulating body, a plurality of terminals installed on the insulating body and a pair of metal fixing pieces fixed at two ends of the insulating body, wherein the insulating body is provided with a main body part extending longitudinally and a pair of limiting parts extending forwards from two longitudinal ends of the main body part, the limiting parts are provided with limiting concave holes, the metal fixing pieces are provided with a main arm covering the limiting parts, a front end installation arm extending forwards from the front end of the main arm to exceed the limiting parts, and a rear end installation arm extending backwards from the rear end of the main arm, the main arm is provided with a downward bending piece extending, and the bending piece is inserted into the limiting concave holes.

Furthermore, the front end mounting arm is provided with an L-shaped welding piece, the rear end mounting arm is provided with a welding tail part, and barbs clamped on the insulating body are arranged on the folded piece and the edges of the two sides of the rear end mounting arm.

Furthermore, the main arm is provided with a notch which is adjacent to the rear end mounting arm, and the folding piece is positioned in the notch.

Furthermore, the limiting part is provided with a base part and a narrowing part, the base part is integrally connected with the main body part, the narrowing part extends forwards from the base part and gradually reduces in width, and the limiting concave hole is formed in the base part.

Furthermore, the narrowing portion is provided with an outer wall surface and an inner wall surface, the outer wall surface extends in an inward inclined mode, and the inner wall surface is provided with a limiting protruding block protruding inwards.

Furthermore, the limiting part is provided with a free tail end far away from the main body part, the limiting lug is formed at the free tail end, and the limiting lug is provided with a top surface extending downwards in an inclined mode.

Furthermore, a pair of fixing grooves are formed in the two longitudinal ends of the main body part, and the rear end mounting arm is clamped in the fixing grooves.

Compared with the prior art, the structure of the metal fixing piece is optimized, the folding piece with the barb and the rear end mounting arm can be stably and reliably fixedly connected with the insulating body, and the front end mounting arm and the rear end mounting arm are welded and fixed with the circuit board, so that the metal fixing piece, the insulating body and the circuit board form a reliable and firm connection relationship.

Drawings

Fig. 1 is a schematic view of the insulation body and the terminal of the electrical connector according to the present invention during assembly.

Fig. 2 is a schematic view of a terminal of the electrical connector according to the present invention.

Fig. 3 is a schematic view illustrating an assembly relationship between a metal fixing element and an insulating body of the electrical connector according to the present invention.

Fig. 4 is a schematic view of a metal fixing member of the electrical connector according to the present invention.

Detailed Description

Referring to fig. 1 to 4, the present invention provides an electrical connector, which includes: the connector comprises an insulating body 10, a plurality of terminals 20 installed in the insulating body 10, and a pair of metal fixing members 30 fixed at two ends of the insulating body 10, wherein the insulating body 10 is integrally injection-molded by plastic, the terminals 20 are clamped on the insulating body 10, and the metal fixing members 30 are used for fixing the insulating body 10 on a circuit board (not shown).

The insulating body 10 is provided with a main body portion 11 extending longitudinally and a pair of limiting portions 12 extending forward from two longitudinal ends of the main body portion 11, wherein the main body portion 11 is provided with a plurality of terminal grooves 13 arranged longitudinally for accommodating and clamping the plurality of terminals 20, the terminal grooves 13 penetrate through the main body portion 11 in the front-rear direction so that the plurality of terminals 20 can be inserted into the terminal grooves 13 from back to front, in addition, two longitudinal ends of the main body portion 11 are further provided with a pair of fixing grooves 14 for clamping and fixing with the metal fixing member 30, the pair of fixing grooves 14 are respectively located at two longitudinal ends of the plurality of terminal grooves 13, the fixing grooves 14 penetrate through the top surface and the bottom surface of the main body portion 11 in the vertical direction, further penetrate through the rear end surface of the main body portion 11 backwards, and form a notch on the rear end surface. The limiting portion 12 and the integral injection molding of the main body portion 11, and a limiting concave hole 15 is arranged on the limiting portion 12, the limiting concave hole 15 extends to the inside of the limiting portion 12 from the downward depression of the top surface of the limiting portion 12, the limiting portion 12 is provided with a base portion 16 and a narrowing portion 17, the base portion 16 is integrally connected with the main body portion 11, the narrowing portion 17 extends forwards from the base portion 16, the width of the narrowing portion is gradually reduced and narrowed, the limiting concave hole 15 is formed on the base portion 16, the narrowing portion 17 is provided with an outer wall surface 171 and an inner wall surface 172, the outer wall surface 171 extends obliquely inwards, an inward protruding limiting convex block 18 is arranged on the inner wall surface 172 and used for clamping a butt end electric connector (not shown in the figure), the limiting convex block 18 is provided with an inclined downward extending top surface 181 which can play a certain guiding role and is convenient for plugging the butt end electric connector, as shown in fig. 1, the limiting projection 18 is formed at the free end (i.e., the end far from the main body 11) of the limiting portion 12.

The terminal 20 is a sheet structure, and is provided with a plurality of sheet-shaped contact pieces 21 and welding pins 22 extending downward from the rear side of the contact pieces 21, the sheet-shaped contact pieces 21 are arranged between the two limiting parts 12 and are distributed at equal intervals, and the top edge of the sheet-shaped contact piece 21 is provided with upward protruding spurs for being clamped in the terminal groove 13.

The metal fixing element 30 is provided with a main arm 31 covering the limiting part 12, a rear end mounting arm 32 extending backward from the rear end of the main arm 31, and a front end mounting arm 33 extending forward from the front end of the main arm 31, wherein the main arm 31 covers the base 16 and the narrowing part 17 of the limiting part 12, the main arm 31 is provided with a notch 34 and a folded piece 35 located in the notch 34 and extending downward in a bent manner, the folded piece 35 is inserted downward into the limiting concave hole 15, and two side edges of the folded piece 35 are provided with spurs, so as to realize clamping and fixing with the limiting part 12, and the main arm 31 extends forward and covers the free tail end of the limiting part 12. The front end mounting arm 33 further extends forward from the front end of the main arm 31 beyond the free end of the stopper 12, and the front end mounting arm 33 is provided with a downward extending L-shaped soldering piece 36 for soldering on a circuit board. The rear mounting arm 32 is held in the fixing groove 14, and two side edges of the rear mounting arm 32 are provided with protrusions for reinforcing the fixing connection with the insulating body 10, and the rear mounting arm 32 is provided with a solder tail portion 37 for soldering to a circuit board.

In summary, in the present invention, by optimizing the structure of the metal fixing element 30, the barbed flap 35 and the rear mounting arm 32 can be stably and reliably fixedly connected to the insulating body 10, and then the front mounting arm 33 and the rear mounting arm 32 are used to realize welding and fixing with the circuit board, so that the metal fixing element 30, the insulating body 10 and the circuit board form a reliable and firm connection relationship.

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 present invention without departing from the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides an electric connector, includes insulator, installs a plurality of terminals on insulator and is fixed in a pair of metal mounting at insulator both ends, insulator is equipped with a longitudinal extension's main part and a pair of spacing portion that extends forward from the longitudinal both ends of main part, its characterized in that: the metal fixing piece is provided with a main arm covering the limiting part, a front end mounting arm extending forwards from the front end of the main arm to exceed the limiting part, and a rear end mounting arm extending backwards from the rear end of the main arm, the main arm is provided with a folding piece bending downwards and extending, and the folding piece is inserted into the limiting concave hole.

2. The electrical connector of claim 1, wherein: the front end mounting arm is provided with an L-shaped welding piece, the rear end mounting arm is provided with a welding tail part, and barbs clamped on the insulating body are arranged on the folded piece and the edges of the two sides of the rear end mounting arm.

3. The electrical connector of claim 2, wherein: the main arm is provided with a notch which is adjacent to the rear end mounting arm, and the folding piece is positioned in the notch.

4. The electrical connector of claim 3, wherein: the limiting part is provided with a base part and a narrowing part, the base part is integrally connected with the main body part, the narrowing part extends forwards from the base part and gradually reduces in width, and the limiting concave hole is formed in the base part.

5. The electrical connector of claim 4, wherein: the narrowing portion is provided with an outer wall surface and an inner wall surface, the outer wall surface extends in an inward inclined mode, and the inner wall surface is provided with a limiting protruding block protruding inwards.

6. The electrical connector of claim 5, wherein: the limiting part is provided with a free tail end far away from the main body part, the limiting lug is formed at the free tail end, and the limiting lug is provided with a top surface extending downwards in an inclined mode.

7. The electrical connector of claim 6, wherein: the longitudinal two ends of the main body part are also provided with a pair of fixing grooves, and the rear end mounting arm is clamped in the fixing grooves.