CN202940390U - Board header - Google Patents

Abstract

A plate end connector comprises: a plastic frame seat having a frame body and a containing chamber, wherein the front end and the rear end of the plastic frame seat are respectively provided with an opening and an installation hole; the metal shell is covered outside the plastic frame seat, and two sides of the metal shell are respectively provided with at least one first welding pin; the metal inner shell is arranged in the mounting hole of the plastic frame seat, the top and two sides of the rear end of the metal inner shell are respectively provided with at least one contact elastic arm and at least one second welding pin, and the contact elastic arm is contacted with the inner wall of the top of the metal outer shell; and a transmission body arranged in the metal inner shell, wherein the transmission body is provided with a rubber frame and a plurality of terminals inserted in the rubber frame. The transmission body has double electric screen shielding effects according to the metal inner shell and the metal outer shell, and effectively shields external electromagnetic waves.

Description

Board header

【Technical field】

The utility model relates to a connector structure, in particular to a board-end connector installed on a circuit board for plugging in a wire-end connector. the

【Background technique】

The board end connector is installed on the circuit board of an electrical appliance, and is used for plugging and mating with the corresponding one-end connector installed on a cable, so as to achieve the mutual connection of power and signals between the cable and the electrical appliance. transmission. the

The existing board end connector mainly includes a transmission body and a metal shell covering the outside of the transmission body, wherein the transmission body has a plastic frame and a plurality of terminals inserted in the plastic frame, and the transmission body has a contact spring arm contact The inner wall of the metal shell is used for grounding. At the same time, the metal shell has the function of an electric screen, so that the electromagnetic wave transmitting the signal transmitted by the main body does not interfere with the external electromagnetic wave. The metal shell has a plurality of welding feet, which are mechanically welded to the fixing holes provided on the circuit board; the multiple terminals of the transmission body are electrically welded to the multiple line jacks provided on the circuit board, so as to achieve the connection with the circuit board. electrical connection of the circuit. the

However, the above-mentioned existing board end connector has the following defects in its structure: (1), it only has a single-layer electric shield shielding structure with a metal shell, and the shielding effect for external electromagnetic waves is not perfect; (2), its The contact elastic arm contacts the metal shell at a single point, and its contact points are few, which cannot effectively reduce the impedance, thus affecting the telescreen effectiveness of the metal shell. (3) The multiple welding feet of the metal shell are welded to the circuit board in a uniaxial flat direction. The uniaxial weldability cannot provide a firm bond with the circuit board, and cannot sufficiently resist the wire end connector and the board end The pull and push torque when the connector is plugged in and out, thus affecting the stability of the electrical contact between the two connectors. the

Due to the above reasons, the applicability of the existing board connectors is not good. the

【Content of utility model】

An object of the present invention is to provide a board connector with double electric shield shielding effect. the

Another object of the present invention is to provide a board end connector, which can improve the efficiency of the electric screen. the

Another object of the present utility model is to provide a board end connector, which has strong connection with the circuit board. the

According to the above-mentioned purpose, an aspect of the present utility model is to provide a board end connector for inserting a wire end connector. The board end connector includes: a plastic frame seat with a frame body and An accommodating chamber surrounded by the frame body, the front end and the rear end of the accommodating chamber respectively have an opening and a mounting hole; a metal shell is set on the outside of the plastic frame, and the two sides of the metal shell are Each bottom has at least one first welding foot; a metal inner shell is installed in the installation hole of the plastic frame seat and protrudes toward the accommodating chamber, and the top and two sides of the rear end of the metal inner shell have at least one contact elastic arm and At least one second welding leg, the contact elastic arm is in contact with the inner wall of the top of the metal shell; and a transmission body is installed inside the metal inner shell, the transmission body has a plastic frame and is inserted in the plastic frame and protrudes from the A plurality of terminals on the outside of the rear end of the plastic frame, each of which has an outer end bent downward. According to its metal inner shell and metal outer shell, it has a double electric shielding effect on the transmission body, effectively shielding external electromagnetic waves. the

According to an embodiment of the present invention, the board end connector further includes a retainer, which is located at the rear end of the plastic frame and accommodated inside the metal shell, and is provided with positions corresponding to each terminal and a corresponding number The outer ends of the terminals respectively pass through the jacks and protrude downward. The terminals are held in a stable position by the retainer. the

According to an embodiment of the present invention, the elastic contact arm is provided with a groove along its length direction, and the elastic contact arm is divided into a first side elastic contact arm and a second side elastic contact arm. In this way, the contact points between the metal inner shell and the metal outer shell are increased to reduce impedance and increase the effectiveness of the electric screen. the

According to an embodiment of the present invention, the first welding foot is a flat straight welding foot, and the second welding foot is a flat horizontal welding foot perpendicular to the flat straight welding foot. According to this, the two vertical welding feet have extremely strong welding firmness with the circuit board. the

According to an embodiment of the present invention, a first buckle groove is respectively provided on opposite side walls of the plastic frame seat, and a first buckle piece is respectively provided on an opposite side wall of the metal shell, which buckle respectively. in each first button slot. In this way, the combination between the metal shell and the plastic frame is achieved. the

According to an embodiment of the present invention, a second buckle groove is respectively provided on opposite side walls of the plastic frame of the transmission body, and a second buckle piece is respectively provided on an opposite side wall of the metal inner shell. respectively buckled in the second buckle slots. In this way, the combination between the transmission body and the metal inner shell is achieved. the

According to an embodiment of the present invention, a front end of a top wall of the plastic frame seat is provided with a positioning hole, which is used for snapping and positioning when mating with the cable end connector. the

【Description of drawings】

In order to make the above and other purposes, features, advantages and embodiments of the present utility model clearer and easier to understand, the accompanying drawings are described as follows:

FIG. 1 is a top perspective view of a board connector according to an embodiment of the present invention viewed from its front top direction. the

2 is a bottom perspective view of the board connector according to an embodiment of the present invention viewed from the direction of its front bottom. the

FIG. 3 is an exploded view illustrating the board connector shown in FIG. 1 . the

FIG. 4 is a cross-sectional view illustrating the board connector shown in FIG. 1 . the

FIG. 5 is a schematic diagram illustrating installation of the board connector shown in FIG. 1 on a circuit board. the

100: plastic frame seat 110: frame body

120: storage room 121: opening

122: Installation hole 130: Side wall

131: The first buckle slot 140: Top wall

141: Positioning hole 200: Metal shell

210: First welding foot 220: Side wall

221: The first buckle 300: Metal inner shell

310: contact spring arm 311: first side contact spring arm

312: Second side contact spring arm 313: Grooving

320: Second welding foot 330: Side wall

331: Second buckle 400: Transmission body

410: plastic frame 411: side wall

412: Second button slot 420: Terminal

421: Outer end 500: Retainer

510: jack 600: circuit board

610: Line Jack 620: First Fixing Hole

630: Second fixing hole

【Detailed ways】

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. the

Referring to FIG. 1 to FIG. 5 , they respectively show two perspective views, an exploded view, a cross-sectional view, and a schematic installation diagram of a board connector according to an embodiment of the present invention. As shown in these figures, the board connector according to an embodiment of the present invention includes a plastic frame 100 , a metal outer shell 200 , a metal inner shell 300 , a transmission body 400 and a holder 500 . the

The transmission body 400 has a plastic frame 410 and a plurality of terminals 420 inserted in the plastic frame and protruding from the rear end of the plastic frame, and each of these terminals has an outer end 421 bent downward for connecting with a Corresponding positions and numbers of circuit jacks 610 on the circuit board 600 are used for electrical welding. The transmission body 400 is a transmission body for plugging into a corresponding male terminal of a terminal connector (not shown), and is used for loop transmission of signals and power. the

The transmission body 400 is installed inside the metal inner shell 300 . The metal inner shell 300 has the first electric shielding effect on the transmission body; that is, the metal inner shell 300 can electrically shield the electromagnetic waves of the transmission body 400 circuit without interfering with the electromagnetic waves outside the electric screen. the

In the implementation of the combination of the transmission body 400 and the metal inner shell 300, the opposite side walls 411 of the plastic frame 410 of the transmission body 400 are respectively provided with a second buckle groove 412, and the opposite sides of the metal inner shell 300 Each of the walls 330 is provided with a second locking piece 331 , which is respectively locked in each second locking groove 412 of the transmission body 400 . In this way, the combination between the transmission body 400 and the metal inner shell 300 is achieved, and the metal inner shell 300 covers the outside of the plastic frame 410 of the transmission body 400 . the

The plastic frame 100 has a frame body 110 and an accommodating chamber 120 surrounded by the frame body. The front end and the rear end of the accommodating chamber 120 respectively have an opening 121 and a mounting hole 122. Wherein, the opening 121 is used for accommodating the main body of the cable end connector (not shown) in the accommodating chamber 120; The plastic frame 100 also serves as insulation for the exterior of the transmission body 400 . In addition, the front end of a top wall 140 of the plastic frame 100 is provided with a positioning hole 141. When the line end connector is inserted into the board end connector of the present utility model, the positioning hole 141 is used as a connection with the card body of the line end connector. Used for positioning. the

The metal shell 300 is set on the outside of the plastic frame 100 as a shielding function of the second electric screen of the transmission body 400, thereby once again isolating the electromagnetic waves of the transmission body 400 circuit from interfering with the electromagnetic waves outside the electric screen, thus According to an embodiment of the present invention, the board end connector has a double electric shielding function, which ensures that the signals and power transmitted by the transmission body 400 are not interfered by external electromagnetic waves. the

In the implementation of the combination of the metal shell 200 and the plastic frame 100, the opposite side walls 130 of the plastic frame 100 are each provided with a first buckle groove 131, while the opposite side walls 220 of the metal shell 200 are respectively A first buckle 221 is provided, which is respectively buckled in each of the first buckle grooves 131 of the plastic frame 100 . In this way, the combination between the metal shell 200 and the plastic frame 100 is achieved, and the metal shell 200 covers the outside of the plastic frame 100 . the

In addition, two first soldering pins 210 are provided on the bottoms of both sides of the metal shell 200 for mechanical soldering and fixing with the first fixing holes 620 provided in corresponding positions of the circuit board 600 . In practice, the first soldering pin 210 is a flat straight soldering pin, and its flattening direction is the same as the plugging and pulling direction of the cable end connector. the

The metal inner shell 300 and the transmission body 400 inside are installed in the installation hole 122 of the plastic frame 100 and protrude toward the accommodating chamber 120 . The top of the rear end of the metal inner shell 300 has two contact elastic arms 310 , which contact the inner wall of the top of the metal shell 200 . Each elastic contact arm 310 is provided with a split groove 313 along its length direction, and each elastic contact arm 310 is divided into a first side elastic contact arm 311 and a second side elastic contact arm 312 . In this way, when the contact elastic arm 310 of the metal inner shell 300 is compressed by force inside the metal shell 300, the local area where the metal inner shell 300 and the metal shell 200 are in contact with each other as an electric screen shield forms double contact. Points, thereby reducing the impedance and increasing the effectiveness of the telescreen. the

In addition, there are two second welding feet 320 on both sides of the rear end of the metal inner shell 300, which are used for mechanical welding and fixing with the second fixing holes 630 provided on the corresponding positions of the circuit board 600. In practice, the second soldering pin 320 is a flat horizontal soldering pin, the flat direction of which is perpendicular to the plugging-out direction of the cable end connector. That is to say, the flat horizontal second soldering legs 320 and the flat and straight first soldering legs 210 are perpendicular to each other. When these two vertical soldering legs are soldered to the circuit board 600 respectively, the overall The soldering firmness between the board-end connector and the circuit board can resist the pull, push, and torque when the wire-end connector and the board-end connector are plugged in and out. In addition to its stable structure, it also keeps the two connectors High quality of electrical contact. the

The holder 500 is located at the rear end of the plastic frame 100 and accommodated inside the metal shell 200, and is provided with a corresponding position and a corresponding number of sockets 510 to each terminal 420 of the transmission body 400, and the outer surface of each terminal 420 The end portions 421 protrude downward after respectively passing through the insertion holes 510 . According to the holder 500, each terminal 420 can be kept in a stable position. the

According to the board end connector of one embodiment of the present invention, the metal inner shell and the metal outer shell have double electric shield shielding effects on the transmission body, which can effectively shield external electromagnetic waves; moreover, the metal inner shell and the metal outer shell The local area in contact with each other forms double contact points, which can reduce the impedance and increase the effectiveness of the electric screen; moreover, the metal inner shell and the metal outer shell are connected to each other by the second welding leg and the first welding leg which are perpendicular to each other. The circuit board is welded and fixed. After the two vertical welding feet are welded to the circuit board, they have extremely strong welding firmness, can resist any operating force when plugging and unplugging the line-end connector, and maintain the electrical contact between the two connectors. quality. The above, indeed achieve the creation purpose of the utility model. the

Although the utility model has been described in detail by the above-mentioned preferred embodiments, the above-mentioned ones are only preferred embodiments of the present utility model, and should not limit the scope of the utility model implementation with this, that is, generally according to the present invention Simple equivalent changes and modifications made to the claims of the utility model and the content of the description of the utility model still fall within the scope covered by the utility model patent. the

Claims (7)

1. A board-end connector, which is used for inserting a wire-end connector, is characterized in that: the board-end connector includes: A plastic frame seat has a frame body and an accommodating chamber surrounded by the frame body, the front end and the rear end of the accommodating chamber respectively have an opening and a mounting hole; A metal shell is set on the outside of the plastic frame, and the bottom of both sides of the metal shell has at least one first welding leg; A metal inner shell is installed in the installation hole and protrudes toward the accommodating chamber. The top and two sides of the rear end of the metal inner shell are respectively provided with at least one contact elastic arm and at least one second welding leg. The contact elastic arm is in contact with the inner wall of the top of the metal enclosure; and A transmission body, installed inside the metal inner shell, the transmission body has a plastic frame and a plurality of terminals inserted in the plastic frame and protruding outside the rear end of the plastic frame, and each of these terminals has a bending direction lower outer end. 2. The board end connector according to claim 1, further comprising a retainer, the retainer is located at the rear end of the plastic frame, and accommodated inside the metal shell, and is provided with These terminals have corresponding positions and a corresponding number of sockets, and the outer ends of these terminals respectively pass through these sockets and protrude downwards. 3. The board end connector according to claim 1 or 2, wherein the elastic contact arm is provided with a groove along the length direction of the elastic contact arm, and the elastic contact arm is divided into a first side The contact spring arm and a second side contact spring arm. 4. The board end connector according to claim 1 or 2, wherein the first soldering leg is a straight soldering leg, and the second soldering leg is a transverse soldering leg perpendicular to the straight soldering leg . 5. The board end connector as claimed in claim 1 or 2, wherein a first buckle groove is respectively provided on one opposite side wall of the plastic frame, and one opposite side wall of the metal shell is respectively provided with a first buckle groove. A first buckle is provided, and each of the first buckle is respectively buckled in each of the first buckle grooves. 6. The board end connector as claimed in claim 1 or 2, characterized in that: the plastic frame of the transmission body is provided with a second buckle groove on the opposite side walls of the plastic frame, and a second buckle groove is provided on the opposite two sides of the metal inner shell. Each of the side walls is provided with a second buckle, and each of the second buckle is buckled in each of the second buckle slots. 7. The board connector as claimed in claim 1 or 2, wherein a front end of a top wall of the plastic frame is provided with a positioning hole.

Images