Electric connector

Abstract

The utility model provides an electric connector, comprising an insulation body, a plurality of wiring terminals accommodated in the insulation body, and a cable connected with the wiring terminals, the insulation body comprises a top wall, a bottom wall, a pair of side walls and a rear wall, a slot for a circuit board to insert is formed between the top wall and the bottom wall, and the rear wall is provided with an opening. The insulation body is provided with a lock catch arm located above the slot, and the front end of the lock catch arm is provided with a hook portion protruding downwards into the slot so as to clamp the circuit board in the slot. According to the utility model, the insulation body is optimized, reliable and stable electric connection can be directly established between the insulation body and the circuit board, the plugging process of the insulation body and the circuit board is very convenient, switching through a board end connector is not needed, when the circuit board is plugged into the electric connector, rapid self-locking can be realized through cooperation of the lock catch arm and the lock catch hole, and if the circuit board needs to be pulled out, the circuit board can be plugged into the electric connector. The lock catch arm can be separated from the lock catch hole only by pressing the pressing part, unlocking separation of the lock catch arm and the lock catch hole is achieved, the overall structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to an electrical connector. Background Art

[0002] The wire-to-board (WTB) connector is a common electrical connector that is widely used in consumer electronic products such as computers and mobile phones to establish an electrical connection between cables and circuit boards. Currently, existing wire-to-board electrical connectors usually include a board-end connector and a wire-end connector. The board-end connector is installed on the circuit board, while the wire-end connector fixes the cable. The connection between the two requires the wire-end connector to be inserted into the board-end connector, thereby achieving the connection between the cable and the circuit board. This connection method is currently the most common wire-to-board design solution, but the structure is relatively complex, requiring the board-end connector and the wire-end connector to be designed separately. In addition, the signal transmission path between the cable and the circuit board is relatively long, that is, the cable connector must rely on the board-end connector to transmit the signal to the circuit board. The extension of the transmission path also increases the possibility of poor contact risk. Utility Model Content

[0003] The technical problem solved by the present invention is to provide an electrical connector to improve the problems of complex structure and high risk of poor contact in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: an electrical connector, including an insulating body, a plurality of wiring terminals accommodated in the insulating body and cables connected to the wiring terminals, the insulating body including a top wall, a bottom wall, a pair of side walls and a rear wall, a slot for inserting a circuit board is formed between the top wall and the bottom wall, the insulating body is provided with a locking arm located above the slot, and the front end of the locking arm is provided with a hook protruding downward into the slot to clamp the circuit board in the slot.

[0005] Furthermore, the locking arm extends from the front-to-back direction, and the rear end of the locking arm is provided with an upward-tilted pressing portion. The lower part of the locking arm is supported on the insulating body by a supporting portion, and the supporting portion is located between the hook portion and the pressing portion in the front-to-back direction.

[0006] Furthermore, a notch is formed on the top wall, and the notch passes through the front edge and the rear edge of the top wall from front to rear, and forms a front opening and a rear opening on the front edge and the rear edge of the top wall respectively.

[0007] Furthermore, the locking arm is located in the notch, the hook portion of the locking arm is located in the front opening and is centrally arranged, and the pressing portion of the locking arm is located in the rear opening and is centrally arranged.

[0008] Furthermore, the width of the front opening is greater than that of the rear opening, and the hook portion protrudes forward from the front opening, the pressing portion protrudes backward from the rear opening, and the pressing portion protrudes upward from the upper surface of the top wall.

[0009] Furthermore, a pair of arc-shaped chamfers are formed on the top wall of the insulating body and located on both sides of the front opening.

[0010] Furthermore, a plurality of receiving grooves are provided in the insulating body to accommodate the wiring terminals. The receiving grooves are formed in the bottom wall and pass through the slot upward. The wiring terminals are provided with contact spring arms that protrude upward from the receiving grooves and are exposed in the slot.

[0011] Compared with the prior art, the present invention optimizes the structure of the insulating body so that it can directly establish a reliable and stable electrical connection with the circuit board, and the plug-in process of the two is very convenient without the need for a board-end connector adapter. When the circuit board is inserted into the electrical connector, the locking arm and the locking hole can cooperate to achieve quick self-locking. If it needs to be pulled out, it is only necessary to press the pressing part to disengage the locking arm from the locking hole, thereby unlocking and disengaging the two. The overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional exploded view of the electrical connector of the present invention with its top surface facing upward.

[0013] Figure 2 This is a three-dimensional exploded view of the electrical connector of the present invention with the bottom surface facing upward.

[0014] Figure 3 This is a cross-sectional view of the electrical connector of the present invention.

[0015] Figure 4 This is a three-dimensional diagram of the electrical connector of the present invention before being plugged into a circuit board.

[0016] Figure 5 This is a three-dimensional diagram of the electrical connector of the present invention after being plugged into a circuit board.

[0017] Figure 6 This is a three-dimensional view of the electrical connector and the circuit board with the bottom surface facing upwards. DETAILED DESCRIPTION

[0018] See also Figures 1 to 6As shown, the present invention provides an electrical connector 100, which includes an insulating body 10, a plurality of connecting terminals 20 housed within the insulating body 10, and cables 30 connected to the connecting terminals 20. The insulating body 10 is formed by injection molding and is used to hold the connecting terminals 20. The connecting terminals 20 are clamped to the insulating body 10 to electrically connect to a circuit board 200. The heads of the cables 30 are connected to the connecting terminals 20 and fixed to each other, and the cables 30 extend rearwardly out of the insulating body 10. Each component is described in detail below.

[0019] like Figure 1 The insulating body 10 includes a top wall 11, a bottom wall 12, a pair of side walls 13 and a rear wall 14, wherein a notch 15 and a locking arm 16 located in the notch 15 are formed on the top wall 11, the notch 15 passes through the front side edge 151 and the rear side edge 152 of the top wall 11 from front to back, and a front opening 153 and a rear opening 154 are formed on the front side edge 151 and the rear side edge 152 of the top wall 11 respectively. Preferably, the lateral width of the front opening 153 is greater than the lateral width of the rear opening 154; the locking arm 16 is long and extends in the front-to-back direction, and its bottom is supported on the rear wall 14 by a supporting portion 17, and the locking arm 16 is located at The rear opening 154 is centrally arranged, and the front end of the locking arm 16 is provided with a hook portion 161 that protrudes downward and extends into the slot 18. The rear end of the locking arm 16 is provided with a pressing portion 162 that is upwardly tilted and protrudes from the upper surface of the top wall 11. The supporting portion 17 is between the front and rear ends of the locking arm 16 and serves as a fulcrum to enable the pressing portion 162 and the hook portion 161 to cooperate with each other, that is, when the pressing portion 162 is pressed downward, the hook portion 161 at the front end can be lifted upward to release the lock on the circuit board 200. Preferably, the front end of the locking arm 16 extends forward beyond the top wall 11 and the bottom wall 12, and the rear end of the locking arm 16 extends backward beyond the top wall 11 and the rear wall 14. Figure 3 As shown. The bottom wall 12 is parallel to the top wall 11 and is located directly below the top wall 11, and a slot 18 is formed between the top wall 11 and the bottom wall 12 for the insertion of the circuit board 200. A receiving groove 121 for receiving the terminal block 20 is formed in the bottom wall 12. The receiving groove 121 extends in the front-to-back direction and passes through the front surface of the bottom wall 12 and the rear surface of the rear wall 14. The receiving groove 121 passes through the upper surface of the bottom wall 12 upward to pass through the slot 18, so that the terminal block 20 in the receiving groove 121 can protrude into the slot 18 to achieve contact with the circuit board 200. At the same time, preferably, a through groove 122 (see Figure 2 and Figure 3), the through slot 122 is connected to the receiving slot 121 and is used to clamp and fix the connecting terminal 20. Figure 3 As shown, the accommodating groove 121 is divided into three front and rear sections distributed along the front and rear directions and interconnected: a front section groove 121A, a middle section groove 121B, and a rear section groove 121C. The vertical dimension of the front section groove 121A is smaller than that of the middle section groove 121B, and the vertical dimension of the middle section groove 121B is smaller than that of the rear section groove 121C.

[0020] The terminal block 20 is provided with a main body 21, a pair of clamping arms 22 extending backward from the main body 21, and a contact spring arm 23 extending forward from the main body 21, wherein the main body 21 is inserted into the accommodating groove 121 of the insulating body 10 from back to front, and the main body 21 is U-shaped, which includes a pair of vertically arranged sheet-like retaining walls 26, a groove 27 is formed between the two sheet-like retaining walls 26, and a bottom of the main body 21 is provided with a downwardly protruding limiting protrusion 24, the limiting protrusion 24 is clamped in the through groove 122 of the bottom wall 12, so that the terminal block 20 is fixedly limited in the front and rear directions, as shown in FIG. Figure 3 As shown, specifically, the main body 21 is accommodated in the middle groove 121B of the accommodating groove 121, and the main body 21 is completely located outside the front groove 121A; the wire clamping arm 22 is accommodated in the rear groove 121C of the accommodating groove 121, for clamping and fixing the cable 30. The contact spring arm 23 is formed by folding back and extending backward from the front end of the main body 21, and the contact spring arm 23 further extends upwardly from the accommodating groove 121, thereby protruding from the upper surface of the bottom wall 12 and entering the slot 18. Preferably, the end of the contact spring arm 23 is also formed with a downwardly protruding abutting arm 25, and the abutting arm 25 abuts downward on the main body 21 to prevent the contact spring arm 23 from being excessively pressed downward, while also ensuring the rebound force of the contact spring arm 23. The abutting arm 25 is located below the contact spring arm 23, and the abutting arm 25 is located in the groove 27 between the pair of sheet-like retaining walls 26. The sheet-like retaining walls 26 can limit the abutting arm 25 in the left and right directions (laterally).

[0021] like Figures 4 to 6 As shown, the electrical connector 100 is used for plugging and connecting with the circuit board 200. The circuit board 200 is provided with a plug-in portion 201 protruding forward, and the plug-in portion 201 is provided with a locking hole 202 that passes through from top to bottom. When the plug-in portion 201 is inserted into the slot 18 of the electrical connector 100, the locking hole 202 will lock and cooperate with the hook portion 161 of the locking arm 16, thereby fixing the circuit board 200 in the electrical connector 100 and making it difficult to disengage. The circuit board 200 is provided with a plurality of metal contact pads 203 on the bottom surface of the plug-in portion 201. Figure 6The metal contact pads 203 face the bottom wall 12 of the insulating body 10 and contact the spring arms 23 of the terminal blocks 20, achieving electrical continuity. Furthermore, when the circuit board 200 is inserted into the electrical connector 100, the plug-in portion 201 is exposed within the front opening 153. To facilitate smooth insertion of the circuit board 200, the top wall 11 of the insulating body 10 preferably includes a pair of arcuate chamfers 154 on either side of the front opening 153.

[0022] In summary, the electrical connector 100 of the present invention optimizes the structure of the insulating body 10 so that it can directly establish a reliable and stable electrical connection with the circuit board 200, and the plug-in process of the two is very convenient without the need for a board-end connector adapter. When the circuit board 200 is inserted into the electrical connector 100, the locking arm 16 and the locking hole 202 can cooperate to achieve quick self-locking. When it is to be pulled out, it is only necessary to press the pressing portion 162 to disengage the locking arm 16 from the locking hole 202, thereby unlocking and disengaging the two. The overall structure is simple and easy to operate.

[0023] The above description is only the best embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention using the above-disclosed method content without departing from the scope of the technical solution of the present invention, which all fall within the scope of protection of the claims.

Claims

1. An electrical connector comprising an insulating body, a plurality of terminals housed in the insulating body, and cables connected to the terminals, the insulating body comprising a top wall, a bottom wall, a pair of side walls, and a rear wall, characterized in that: A slot for inserting a circuit board is formed between the top wall and the bottom wall. The insulating body is provided with a locking arm located above the slot. The front end of the locking arm is provided with a hook portion protruding downward into the slot to clamp the circuit board in the slot.

2. The electrical connector according to claim 1, wherein: The locking arm extends from the front-to-back direction, and a pressing portion that is tilted upward is provided at the rear end of the locking arm. The lower part of the locking arm is supported on the insulating body by a supporting portion, and the supporting portion is located between the hook portion and the pressing portion in the front-to-back direction.

3. The electrical connector according to claim 2, wherein: A notch is formed on the top wall, and the notch passes through the front edge and the rear edge of the top wall from front to rear, and forms a front opening and a rear opening on the front edge and the rear edge of the top wall respectively.

4. The electrical connector according to claim 3, wherein: The locking arm is located in the notch, the hook portion of the locking arm is located in the front opening and is centrally arranged, and the pressing portion of the locking arm is located in the rear opening and is centrally arranged.

5. The electrical connector according to claim 4, wherein: The width of the front opening is greater than that of the rear opening, and the hook portion protrudes forward from the front opening, the pressing portion protrudes rearward from the rear opening, and the pressing portion protrudes upward from the upper surface of the top wall.

6. The electrical connector according to claim 5, wherein: A pair of arc-shaped chamfers are formed on the top wall of the insulating body and located on both sides of the front opening.

7. The electrical connector according to claim 6, wherein: The insulating body is provided with a plurality of receiving grooves for accommodating the connecting terminals. The receiving grooves are formed in the bottom wall and pass through the slot upward. The connecting terminals are provided with contact spring arms that protrude upward from the receiving grooves and are exposed in the slots.

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