Electric connector

Abstract

The utility model discloses an electric connector, which comprises a lengthwise insulating body and a plurality of conductive terminals, and the plurality of conductive terminals are divided into two rows and are fixed in the insulating body. Each row of conductive terminals comprises a plurality of grounding terminals, and each conductive terminal is provided with a vertically extending holding part, a contact part located at the top of the holding part, and a welding part located at the bottom of the holding part. The electric connector further comprises a grounding piece, the grounding piece comprises a bottom plate and a plurality of elastic pieces which are located on the two opposite side edges of the bottom plate and extend upwards, and the free tail ends of the elastic pieces are provided with abutting parts. The grounding piece is assembled to the insulation body from bottom to top. The insulation body comprises a bottom wall, two rows of through holes are formed in the bottom wall, the bottom plate is fixed to the bottom face of the bottom wall, the elastic pieces extend into the insulation body through the corresponding through holes, and the abutting parts elastically abut against the holding parts of the corresponding grounding terminals. The grounding sheet of the electric connector is a single-sheet type, all the grounding terminals can be conducted only through one-time assembly, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to an electric connector. Background Art

[0002] The board-to-board (BTB) connector is a common electrical connector, which is mainly used to connect two printed circuit boards. It usually includes an insulating body, two rows of conductive terminals fixed on the insulating body, and two grounding plates corresponding to each row of conductive terminals. A number of grounding terminals are provided in each row of conductive terminals, and the grounding plate is provided with a number of convex bumps that interfere with each grounding terminal to enhance the shielding effect of the electrical connector and solve the signal crosstalk problem in the electrical connector. During assembly, the two grounding plates need to be inserted into the insulating body twice, which will affect the assembly efficiency; and the convex bumps of the grounding plate are in hard interference contact with the grounding terminal, which is prone to deformation after long-term use, resulting in an inability to reliably contact the corresponding grounding terminal, affecting the shielding effect of the electrical connector.

[0003] Therefore, it is necessary to provide a new electrical connector to overcome the above defects. Utility Model Content

[0004] The utility model provides an electric connector with a grounding sheet which is easy to assemble and has reliable contact.

[0005] Specifically, the utility model is realized through the following technical scheme: an electrical connector, comprising a longitudinal insulating body and a plurality of conductive terminals, wherein the plurality of conductive terminals are divided into two rows and fixed in the insulating body, and each row of the conductive terminals comprises a plurality of grounding terminals, wherein the conductive terminals are provided with a vertically extending retaining portion, a contact portion located at the top of the retaining portion and a welding portion located at the bottom of the retaining portion, and further comprising a grounding sheet, wherein the grounding sheet comprises a bottom plate and a plurality of spring sheets located at opposite side edges of the bottom plate and extending upward, and a pressing portion is provided at the free end of the spring sheet; the grounding sheet is assembled to the insulating body from bottom to top, the insulating body comprises a bottom wall, and the bottom wall is provided with two rows of through holes, the bottom plate is fixed to the bottom surface of the bottom wall, the spring sheets extend into the insulating body through the corresponding through holes, and the pressing portion elastically presses the retaining portion of the corresponding grounding terminal.

[0006] In a preferred embodiment, the insulating body includes a plurality of side walls located around the bottom wall, the bottom wall and the plurality of side walls form a receiving cavity, and a plurality of terminal grooves are provided on the inner side surfaces of two opposite side walls extending in the longitudinal direction, the terminal grooves penetrate downwardly through the bottom wall, and the retaining portions of the conductive terminals are retained in the terminal grooves.

[0007] In a preferred embodiment, the through holes are arranged in one-to-one correspondence with the terminal grooves and are connected.

[0008] In a preferred embodiment, the bottom plate is provided with a plurality of punching holes and a plurality of mounting portions bent upward from the edges of the punching holes, the bottom wall is correspondingly provided with a plurality of mounting holes, and the mounting portions are provided with protrusions that interfere with the mounting holes.

[0009] In a preferred embodiment, the pressing portion is arc-shaped.

[0010] In a preferred embodiment, the electrical connector is a board-to-board connector.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the grounding plate of the electrical connector of the present application is a single piece, and only needs to be assembled once to achieve the conduction of all grounding terminals, which can improve the assembly efficiency. The spring of the grounding plate elastically contacts the grounding terminal, and has high stability.

[0012] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional assembly diagram of an electrical connector in one embodiment of the present application;

[0014] Figure 2 for Figure 1 A perspective exploded view of an electrical connector;

[0015] Figure 3 for Figure 2 A partial enlarged view of the grounding plate in FIG.

[0016] Figure 4 is a cross-sectional view of an electrical connector;

[0017] Figure 5 The bottom plan view of the electrical connector.

[0018] Description of reference numerals:

[0019] Insulating body 1, bottom wall 11, through hole 111, mounting hole 112, side wall 12, terminal slot 121, receiving cavity 10, conductive terminal 2, retaining portion 21, contact portion 22, welding portion 23, grounding terminal 20, grounding plate 3, bottom plate 31, punching hole 311, mounting portion 312, protrusion 313, spring piece 32, pressing portion 33. DETAILED DESCRIPTION

[0020] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices, systems, equipment and methods consistent with some aspects of the utility model.

[0021] The present application provides an electrical connector, specifically a board-to-board connector for connecting two printed circuit boards. Figure 1 and Figure 2 As shown, the electrical connector includes an insulating body 1, a plurality of conductive terminals 2, a grounding plate 3 and a metal shell (not shown). The conductive terminals 2 and the grounding plate 3 are assembled into the insulating body 1 by inserting and fixing them. The metal shell (not shown) surrounds the outer circumference of the insulating body 1 to provide a shielding function.

[0022] The insulating body 1 is generally in a longitudinal shape and has a bottom wall 11 (see Figure 4 ) and a plurality of side walls 12 located around the bottom wall 11, the bottom wall 11 and the plurality of side walls 12 together enclose a receiving cavity 10 which is open upwards for accommodating a docking connector (not shown), wherein a plurality of terminal grooves 121 are provided on the inner side surfaces of two opposite side walls 12 extending in the longitudinal direction, and the terminal grooves 121 penetrate downwardly through the bottom wall 11.

[0023] The conductive terminal 2 is generally L-shaped, including a vertically extending retaining portion 21, a contact portion 22 extending upward from the retaining portion 21, and a welding portion 23 bent outward from the bottom of the retaining portion 21 and extending horizontally. The conductive terminal 2 is inserted into the receiving cavity 10 through the bottom wall 11 from bottom to top, wherein the retaining portion 21 and the inner wall of the terminal slot 121 are interference-matched to reliably fix a plurality of conductive terminals 2 on opposite sides of the receiving cavity 10, respectively. The contact portion 22 is an arc convex toward the receiving cavity 10, and can be elastically contacted with the docking terminal (not shown) of the docking connector (not shown) to achieve electrical connection. The welding portion 23 is welded to the printed circuit board (not shown) on which the electrical connector is installed by high-temperature reflow soldering.

[0024] Continue to refer Figure 2 Combined with Figure 3 and Figure 4As shown, the grounding plate 3 includes a horizontally arranged and strip-shaped bottom plate 31 and a plurality of spring pieces 32 extending upward from the edges of the two longitudinal sides of the bottom plate 31. Two rows of through holes 111 are provided on the bottom wall 11 of the insulating body 1, and the through holes 111 and the terminal slots 121 can be arranged one by one and connected. The grounding plate 3 is assembled from bottom to top, the bottom plate 31 is fixed to the bottom surface of the bottom wall 11, and each spring piece 32 extends into the receiving cavity 10 from the corresponding through hole 111. A plurality of grounding terminals 20 are provided in each row of conductive terminals 2, and each spring piece 32 is arranged corresponding to the position of each grounding terminal 20. The top end of the spring piece 32 is a free end, and is an arc-shaped pressing portion 33 protruding outward. The pressing portion 33 located in the receiving cavity 10 contacts the retaining portion 21 of the corresponding grounding terminal 20 to achieve grounding. The bottom plate 31 is provided with a plurality of rectangular punching holes 311 and a rectangular mounting portion 312 bent upward from the edge of the punching holes 311. The plurality of punching holes 311 are distributed along the longitudinal direction. The mounting portion 312 is located on the longitudinal side of the punching holes 311. The mounting portion 312 is provided with thorns 313 on opposite sides. The bottom wall 11 of the insulating body 1 is correspondingly provided with a plurality of mounting holes 112. The thorns 313 are interference-matched with the inner walls of the corresponding mounting holes 112 to firmly mount the grounding plate 3 on the insulating body 1.

[0025] The grounding plate 3 of the electrical connector of the present application is a single piece, and only needs to be assembled once to achieve conduction of all grounding terminals 20, which can improve assembly efficiency. The spring piece 32 of the grounding plate 3 elastically contacts the grounding terminal 20, and the spring piece 32 will not cause poor contact and other problems due to stress release during high-temperature reflow soldering, and has high stability. The contact point between the spring piece 32 of the grounding plate 3 and the grounding terminal 20 is deeply buried in the insulating body 1, and the signal shielding effect is good, which can meet the specifications of PCIe5.0. The position of the contact point between the spring piece 32 and the grounding terminal 20 can be customized according to customer requirements. In addition, when the grounding plate 3 is assembled upward, the arc pressing portion 33 can also provide guidance for the assembly of the grounding plate 3, thereby improving assembly efficiency.

[0026] The above are only preferred implementation modes of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An electrical connector, comprising a longitudinal insulating body and a plurality of conductive terminals, wherein the plurality of conductive terminals are divided into two rows and fixed in the insulating body, each row of the conductive terminals comprises a plurality of grounding terminals, the conductive terminals are provided with a vertically extending retaining portion, a contact portion located at the top of the retaining portion and a welding portion located at the bottom of the retaining portion, characterized in that: It also includes a grounding plate, which includes a bottom plate and a plurality of spring sheets located on opposite side edges of the bottom plate and extending upward, and a pressing portion is provided at the free end of the spring sheet; the grounding plate is assembled to the insulating body from bottom to top, and the insulating body includes a bottom wall, and the bottom wall is provided with two rows of through holes, the bottom plate is fixed to the bottom surface of the bottom wall, the spring sheets extend into the insulating body through the corresponding through holes, and the pressing portion elastically presses the retaining portion of the corresponding grounding terminal.

2. The electrical connector according to claim 1, characterized in that: The insulating body includes a plurality of side walls located around the bottom wall. The bottom wall and the plurality of side walls are arranged to form a receiving cavity. The inner side surfaces of the two opposite side walls extending in the longitudinal direction are provided with a plurality of terminal grooves. The terminal grooves penetrate downwardly through the bottom wall. The retaining portions of the conductive terminals are retained in the terminal grooves.

3. The electrical connector according to claim 2, characterized in that: The through holes are arranged in one-to-one correspondence with the terminal grooves and are connected.

4. The electrical connector according to claim 1, wherein: The bottom plate is provided with a plurality of punching holes and a plurality of mounting portions bent upward from the edges of the punching holes. The bottom wall is correspondingly provided with a plurality of mounting holes. The mounting portions are provided with spurs that interfere with the mounting holes.

5. The electrical connector according to claim 1, characterized in that: The pressing portion is arc-shaped.

6. The electrical connector according to claim 1, characterized in that: The electrical connector is a board-to-board connector.

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