Electrical connector

Abstract

The present invention discloses an electrical connector, which includes an insulating body extending longitudinally, conductive terminals fixed on the insulating body, and protective brackets located at both longitudinal ends of the insulating body. At least one protective bracket is formed by drawing a metal part, and is formed with a receiving cavity for receiving both longitudinal ends of the insulating body and a side wall portion surrounding the outside of the receiving cavity. The side wall portion has a bottom surface welding surface located at the bottom of the insulating body for welding to a circuit board. The structure is simple, and the protective bracket provides five-sided metal protection, increasing the overall strength of the electrical connector. At the same time, when the electrical connectors are mated, the shortest current-carrying path can be formed between the shielding portions covering the surfaces of the end walls by the protective brackets and the docking brackets of the docking connectors, which is beneficial to minimizing the current-carrying path of the electrical connector on the basis of effectively controlling the overall size of the electrical connector, so that the overall impedance of the electrical connector is small, which is beneficial to improving the current-carrying capacity of the electrical connector.

Description

Technical Field

[0001] The present invention relates to an electrical connector, and more particularly to an electrical connector with a metal protection bracket. Background Art

[0002] Electrical connectors are used for electrical connection and signal transmission between devices, components, and systems, and are essential basic components for forming a complete system. Currently, electrical connectors are widely used in various electronic products. With the development of fast charging technology, mobile phone users have put forward higher requirements for the battery life of mobile phones and shortening the charging time of mobile phone batteries. In order to achieve fast charging of mobile phone batteries, it is required that devices on the fast charging path, such as batteries, board-to-board connectors, printed circuit boards (PCBs), and chips, can all carry large current transmission. For board-to-board connectors, in order to improve their own fast charging ability, it is necessary to reduce the transmission impedance of the board-to-board connectors. In the case where the copper material of existing board-to-board connectors already uses the currently highest conductive material, increasing the contact area of the copper material is a common design solution for reducing impedance. However, increasing the contact area between terminals will cause the area size of the board-to-board connector to become larger, so that the space it occupies inside the mobile phone is relatively large, which runs counter to the development trend of reducing the size of internal devices of mobile phones to increase the setting of mobile phone function modules. Therefore, how to improve the current-carrying capacity of the board-to-board connector on the basis of reducing its size has become a technical problem that needs to be solved urgently by those skilled in the art.

[0003] Therefore, it is hoped to propose a new electrical connector to overcome the above defects. Summary of the Invention

[0004] The purpose of the present invention is to provide an electrical connector with a protection bracket, which can reduce the current-carrying path during the mating of the electrical connector while enhancing the strength of the electrical connector itself.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: An electrical connector includes an insulating body extending longitudinally, conductive terminals fixed on the insulating body, and protection brackets located at both longitudinal ends of the insulating body. At least one of the protection brackets is formed by drawing a metal part, and has a receiving cavity for receiving both longitudinal ends of the insulating body and a side wall portion surrounding the outside of the receiving cavity. The side wall portion has a bottom surface welding surface located at the bottom of the insulating body for welding to a circuit board.

[0006] In a preferred embodiment, the protection brackets at both longitudinal ends of the insulating body are both formed by drawing metal parts, and the structures of the two protection brackets are the same.

[0007] In a preferred embodiment, each of the protection brackets is symmetrically arranged along the longitudinal direction of the insulating body.

[0008] In a preferred embodiment, the insulating body is provided with two side walls extending along the longitudinal direction and two end walls connecting the two side walls. The protection bracket is fixed to the end wall, and the side wall portion covers the top surface, bottom surface, outer end surface and two side surfaces of the end wall.

[0009] In a preferred embodiment, the side wall portion includes a top surface shielding portion covering the top surface of the end wall, a bottom surface shielding portion covering the bottom surface of the end wall, and two side surface shielding portions covering the side surfaces of the end wall. The upper and lower ends of the side surface shielding portion are respectively connected to the top surface shielding portion and the bottom surface shielding portion, and the bottom welding surface is one side surface of the bottom surface shielding portion.

[0010] In a preferred embodiment, the side wall portion further includes an end surface shielding portion covering the outer end surface of the end wall. The outer peripheral edges of the end surface shielding portion are respectively connected to the longitudinal sides of the top surface shielding portion, the bottom surface shielding portion and the two side surface shielding portions. The top surface shielding portion, the bottom surface shielding portion, the two side surface shielding portions and the end surface shielding portion jointly enclose to form the accommodating cavity, and the end wall is received in the accommodating cavity.

[0011] In a preferred embodiment, at least a part of the top surface shielding portion covers the top surface of the side wall, and at least a part of the side surface shielding portion covers the outer wall surface of the side wall. The two side walls and the two end walls jointly enclose to form a slot, and the top surface shielding portion is provided with a notch corresponding to the slot.

[0012] In a preferred embodiment, the conductive terminal is provided with an inner wall contact portion fixed to the inner wall surface of the side wall and a welding portion extending out of the insulating body from the bottom of the inner wall contact portion. The welding portion is exposed on the bottom surface of the insulating body and is used for welding to the circuit board.

[0013] In a preferred embodiment, the conductive terminal is further provided with an outer wall contact portion fixed to the outer wall surface of the side wall and a connecting portion connecting the top ends of the inner wall contact portion and the outer wall contact portion. The inner wall contact portion, the connecting portion and the outer wall contact portion jointly form an inverted U-shaped contact portion.

[0014] In a preferred embodiment, the bottom welding surface extends downward beyond the bottom surface of the insulating body, and the bottom surface of the bottom welding surface is flush with the bottom surface of the welding portion of the conductive terminal.

[0015] Compared with the prior art, the present invention has the following beneficial effects: At least one protective bracket is formed by drawing a metal part, and is formed with a receiving cavity for receiving the longitudinal two ends of the insulating body and a side wall portion surrounding the outside of the receiving cavity. The side wall portion has a bottom surface welding surface located at the bottom of the insulating body for welding to the circuit board; the structure is simple, and the protective bracket protects the end walls of the insulating body on five sides, increasing the overall strength of the electrical connector. At the same time, when the electrical connector cooperates with the docking connector, the shortest current-carrying path can be formed between the shielding portions covering the surfaces of the end walls by the protective bracket and the docking bracket of the docking connector, which is beneficial to minimizing the current-carrying path of the electrical connector on the basis of effectively controlling the overall size of the electrical connector, so that the overall impedance of the electrical connector is small, which is beneficial to improving the current-carrying capacity of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of an electrical connector in a preferred embodiment of the present invention.

[0017] Figure 2 is Figure 1 a perspective view of the electrical connector shown from another angle.

[0018] Figure 3 is Figure 1 an exploded view of the electrical connector shown.

[0019] Figure 4 is Figure 1 a cross-sectional view of the electrical connector shown along the A-A direction.

[0020] Figure 5 is Figure 1 a cross-sectional view of the electrical connector shown along the B-B direction.

[0021] Figure 6 is Figure 3 a perspective view of the protective bracket in the electrical connector shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Referring to Figures 1 to 6 shown, a preferred embodiment of the present invention discloses an electrical connector 100, which is used to be mounted on a circuit board (not shown) and cooperate with a docking connector (not shown). The electrical connector 100 includes an insulating body 10 extending longitudinally, conductive terminals 20 fixed on the insulating body 10, and protective brackets 30 located at the longitudinal two ends of the insulating body 10. The insulating body 10 is provided with two side walls 11 extending longitudinally and two end walls 12 connecting the two side walls 11. The two side walls 11, the two end walls 12 and the bottom wall of the insulating body 10 together define a central slot 13, and the slot 13 can be used for the insertion of the docking connector.

[0023] Combined Figure 3 and Figure 4 As shown, the conductive terminal 20 is held on the side wall 11 and is provided with an inner wall contact portion 21 located on the inner wall surface of the side wall 11, an outer wall contact portion 22 located on the outer wall surface of the side wall 21, a connecting portion 23 connecting the tops of the inner wall contact portion 21 and the outer wall contact portion 22, and a welding portion 24 extending outward from the bottom of the inner wall contact portion 21 to the insulating body 10. The connecting portion 23 is located at the top of the side wall 11, and the welding portion 24 is exposed on the bottom surface of the insulating body 10 and is used for welding to the circuit board. The inner wall contact portion 21, the connecting portion 23, and the outer wall contact portion 22 together form an inverted U-shaped contact portion for contacting the docking terminal of the docking connector; one of the inner wall contact portion 21 and the outer wall contact portion 22 has a smooth contact surface, and the other has a locking portion located at the upper end and protruding outward. In this embodiment, the inner wall contact portion 21 has a smooth contact surface, and the outer wall contact portion 22 has a locking portion 221 located at the upper end and protruding outward.

[0024] Combined Figure 5 and Figure 6 As shown, at least one of the protection brackets 30 is formed by drawing a metal part and is fixed to the end wall 12 of the insulating body 10. Its structure is simple and it is used to enhance the overall strength of the electrical connector 100. In this embodiment, the protection brackets 30 at both longitudinal ends of the insulating body 10 are both formed by drawing metal parts, and the structures of the two protection brackets 30 are the same. Thus, the two protection brackets 30 can be formed by the same set of molds, simplifying the manufacturing process and reducing costs. Further, each protection bracket 30 is symmetrically arranged along the longitudinal direction of the insulating body 10 to facilitate the installation of the protection bracket 30 at either end of the longitudinal ends of the insulating body 10. The protection bracket 30 forms a receiving cavity 35 for receiving both longitudinal ends of the insulating body 10 and a side wall portion (not labeled) surrounding the outside of the receiving cavity 35. The side wall portion has a bottom surface welding surface (not labeled) located at the bottom of the insulating body 10 to facilitate the welding of the protection bracket 30 to the circuit board.

[0025] At the same time, the protection bracket 30 is fixed to the end wall 12 at both longitudinal ends of the insulating body 10, and the side wall portion covers the top surface, bottom surface, outer end surface, and two side surfaces of the end wall 12, thereby enhancing the strength of the insulating body 10 while avoiding damage to the insulating body 10 during the insertion and extraction of the electrical connector 100. The side wall portion of the protection bracket 30 includes a top surface shielding portion 31 covering the top surface of the end wall 12, a bottom surface shielding portion 32 covering the bottom surface of the end wall 12, two side surface shielding portions 33 covering the side surfaces of the end wall 12, and an end surface shielding portion 34 covering the outer end surface of the end wall 12. The upper and lower ends of the side surface shielding portion 33 are respectively connected to the top surface shielding portion 31 and the bottom surface shielding portion 32, and the bottom surface welding surface is a side surface of the bottom surface shielding portion 32.

[0026] The outer edges around the end face shielding portion 34 are respectively connected to the longitudinal side of the top face shielding portion 31, the bottom face shielding portion 32, and the two side face shielding portions 33. That is, the top face shielding portion 31, the bottom face shielding portion 32, the two side face shielding portions 33, and the end face shielding portion 34 jointly enclose the accommodation cavity 35, and the end wall 12 is received in the accommodation cavity 35. Thus, the protective bracket 30 covers the top face, the bottom face, the end face, and the two side faces of the end wall 12, that is, the protective bracket 30 performs five-sided metal protection on the end wall 12 of the insulating body 10, thereby increasing the overall strength of the electrical connector 100. At the same time, at least a part of the top face shielding portion 31 covers the top face of the side wall 11, and at least a part of the side face shielding portion 33 covers the outer wall surface of the side wall 11, so that the protective bracket 30 can enhance the strength of a part of the side wall 11 of the insulating body 10. The top face shielding portion 31 is also provided with a notch 311 corresponding to the slot 13 to make way for the slot 13, so as to facilitate the cooperation between the electrical connector 100 and the docking connector.

[0027] The top face shielding portion 31 does not extend beyond the top face of the side wall 11, and the side face shielding portion 33 does not extend beyond the outer wall surface of the side wall 12. That is, neither the top face shielding portion 31 nor the side face shielding portion 33 extends beyond the surface of the insulating body 10. Therefore, the top face shielding portion 31 and the side face shielding portion 33 do not increase the overall volume of the electrical connector 100 while enhancing the strength of the end wall 12 of the insulating body 10 itself. In this embodiment, the bottom welding face of the bottom face shielding portion 32 extends downward beyond the bottom face of the insulating body 10 and is flush with the bottom face of the welding portion 24 of the conductive terminal 20. That is, the bottom face shielding portion 32 does not increase the overall volume of the electrical connector 100 while enhancing the strength of the end wall 12 of the insulating body 10 itself.

[0028] The bottom face shielding portion 32 of the protective bracket 30 can be fixedly welded to the circuit board electrically connected to the electrical connector 100. When the electrical connector 100 cooperates with the docking connector, at least one of the side face shielding portion 33 and the end face shielding portion 34 contacts the docking bracket of the docking connector; at this time, a plurality of current-carrying paths are formed between the docking bracket, the side face shielding portion 33 or the end face shielding portion 34 of the protective bracket 30, the bottom face shielding portion 32, and the circuit board. Compared with the traditional protective bracket, the overall protective bracket 30 of the present invention is an effective current-carrying path when cooperating with the docking bracket. It is beneficial to minimize the current-carrying path of the electrical connector 100 on the basis of effectively controlling the overall size of the electrical connector 100, so that the overall impedance of the electrical connector 100 is smaller, which is beneficial to improving the current-carrying capacity of the electrical connector 100.

[0029] In the present invention, the protective bracket 30 is formed by drawing a metal part, with a simple structure. The protective bracket 30 covers the top surface, bottom surface, end surface and two side surfaces of the end wall 12, that is, the protective bracket 30 provides five-sided metal protection for the end wall 12 of the insulating body 10, increasing the overall strength of the electrical connector 100. At the same time, when the electrical connector 100 is mated with the docking connector, the shortest current-carrying path can be formed between the shielding portions covering the respective surfaces of the end wall 12 by the protective bracket 30 and the docking bracket of the docking connector, which is beneficial to minimizing the current-carrying path of the electrical connector 100 on the basis of effectively controlling the overall size of the electrical connector 100, so that the overall impedance of the electrical connector 100 is smaller, which is beneficial to improving the current-carrying capacity of the electrical connector 100.

[0030] In summary, the above are only the preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An electrical connector, comprising an insulating body extending longitudinally, conductive terminals held on the insulating body, and protective brackets located at two longitudinal ends of the insulating body, wherein the insulating body is provided with two side walls extending longitudinally and two end walls connecting the two side walls; characterized in that: At least one of the protection brackets is formed by drawing a metal piece, and is formed with a receiving cavity for receiving the longitudinal two ends of the insulating body and a side wall portion surrounding the outside of the receiving cavity. The side wall portion has a bottom surface welding surface located at the bottom of the insulating body for welding to a circuit board. The side wall portion includes a top surface shielding portion covering the top surface of the end wall, a bottom surface shielding portion covering the bottom surface of the end wall, two side surface shielding portions covering the side surfaces of the end wall, and an end surface shielding portion covering the outer end surface of the end wall. The upper and lower ends of the side surface shielding portion are respectively connected to the top surface shielding portion and the bottom surface shielding portion, and the bottom surface welding surface is a side surface of the bottom surface shielding portion. The peripheral outer edges of the end surface shielding portion are respectively connected to the longitudinal sides of the top surface shielding portion, the bottom surface shielding portion, and the two side surface shielding portions. The top surface shielding portion, the bottom surface shielding portion, the two side surface shielding portions, and the end surface shielding portion jointly enclose to form the receiving cavity, and the end wall is received in the receiving cavity. That is, the side wall portion entirely covers the top surface, the bottom surface, the outer end surface, and the two side surfaces of the end wall.

2. The electrical connector according to claim 1, wherein: The protection brackets at the longitudinal two ends of the insulating body are both formed by drawing metal pieces, and the structures of the two protection brackets are the same.

3. The electrical connector according to claim 2, wherein: Each of the protection brackets is symmetrically arranged along the longitudinal direction of the insulating body.

4. The electrical connector according to claim 1, characterized in that: The protection bracket is fixed to the end wall.

5. The electrical connector according to claim 4, wherein: At least a part of the top surface shielding portion covers the top surface of the side wall, and at least a part of the side surface shielding portion covers the outer wall surface of the side wall. The two side walls and the two end walls jointly enclose to form a slot, and the top surface shielding portion is provided with a notch corresponding to the slot.

6. The electrical connector according to claim 4, wherein: The conductive terminal is provided with an inner wall contact portion fixed to the inner wall surface of the side wall and a welding portion extending out of the insulating body from the bottom of the inner wall contact portion. The welding portion is exposed on the bottom surface of the insulating body and is used for welding to the circuit board.

7. The electrical connector according to claim 6, wherein: The conductive terminal is further provided with an outer wall contact portion fixed to the outer wall surface of the side wall and a connecting portion connecting the tops of the inner wall contact portion and the outer wall contact portion. The inner wall contact portion, the connecting portion, and the outer wall contact portion jointly form an inverted U-shaped contact portion.

8. The electrical connector according to claim 6, wherein: The bottom surface welding surface extends downward beyond the bottom surface of the insulating body, and the bottom surface of the bottom surface welding surface is flush with the bottom surface of the welding portion of the conductive terminal.

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