Socket connector

Abstract

The utility model provides a board-to-board electric connector combination, which comprises a plug connector and a socket connector, and is characterized in that the socket connector comprises a socket body, a plurality of socket terminals accommodated in the socket body and a socket shell arranged on the socket body; the socket body is provided with a pair of side walls extending in a long and narrow manner, a long and narrow butt joint part between the two side walls, and a pair of end walls integrally connected with the two longitudinal ends of the side walls, and each socket terminal is provided with a bottom arm extending transversely and a butt joint arm extending upwards from one end of the bottom arm in a curve manner; the bottom arms are linear and horizontally extend outwards from the bottoms of the butt joint parts to the bottoms of the side walls, and the butt joint arms are S-shaped and distributed on the surfaces of the two sides of the butt joint parts. Compared with the prior art, the structure of the socket terminal is simplified, and the transversely extending bottom arm passes through the side wall of the socket body and protrudes out of the socket body, so that the whole structure is simple, and the assembly is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of electrical connections, and more particularly to a socket connector. Background Technology

[0002] Board-to-board (BTO) connectors are a common type of connector used in electronic products to establish an electrical connection between two circuit boards. They typically consist of a plug and a socket, soldered onto the two boards respectively, and communication between them is achieved through insertion. Generally, BTO connectors have a relatively simple structure, often employing a longitudinal shape with two rows of conductive terminals. However, existing designs using multiple bends in the conductive terminals increase complexity, raising manufacturing difficulty, affecting processing and assembly accuracy, and making the assembly process more cumbersome. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a socket connector to improve the problems of complex terminal structure and unstable fixation in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a socket connector, comprising a socket body, a plurality of socket terminals housed within the socket body, and a socket housing mounted on the socket body. The socket body is provided with a pair of elongated sidewalls, an elongated mating portion between the two sidewalls, and a pair of endwalls integrally connected to the longitudinal ends of the sidewalls. The socket terminals are provided with a horizontally extending bottom arm and a mating arm extending upward in a curve from one end of the bottom arm. The bottom arm is straight and extends horizontally outward from the bottom of the mating portion to the bottom of the sidewall. The mating arm is S-shaped and distributed on both sides of the mating portion.

[0005] Furthermore, the socket terminals are embedded in the socket body through injection molding or are fixed to the socket body through hot-melt process. An annular groove is formed between the pair of sidewalls and the mating part, and the socket terminal portion protrudes into the annular groove to mate with a plug connector.

[0006] Furthermore, the socket housing includes a left shell and a right shell, and a narrow cavity is formed between the left shell and the right shell and the side wall of the socket body. The end of the docking arm is exposed in the cavity for welding and fixing to a circuit board.

[0007] Furthermore, the left and right shells are both covered on the socket body from top to bottom, and each of the left and right shells is provided with an L-shaped lateral cover and a pair of end cover parts connected to both ends of the lateral cover. The lateral cover and the end cover parts respectively cover the side wall and the end wall.

[0008] Furthermore, the lateral covering portion includes a horizontally arranged top plate and a vertically arranged side plate. The top plate covers the top of the cavity and only partially covers the side wall of the socket body, while the side plate covers the side of the cavity.

[0009] Furthermore, the outer surface of the sidewall is recessed relative to the end wall, thereby forming the elongated cavity between the sidewall and the side plate.

[0010] Furthermore, the top plate is provided with a pair of fixed feet that bend downwards at both ends, and the fixed feet are inserted downwards into the side wall to be fixedly connected to the side wall; a number of spring pieces are formed on the side plate.

[0011] Furthermore, the thickness of the sidewall is greater than the thickness of the mating portion, and the top surface of the sidewall is higher than the top surface of the end wall.

[0012] Furthermore, the end cover is L-shaped and covers the top and side surfaces of the end wall.

[0013] Compared with the prior art, this utility model simplifies the structure of the socket terminal by using a horizontally extending bottom arm that passes through the side wall of the socket body and protrudes out of the socket body. The overall structure is simple, the processing and assembly precision is better, and it is more convenient. Attached Figure Description

[0014] Figure 1 This is a three-dimensional assembly diagram of the plug connector of the board-to-board electrical connector assembly described in this utility model.

[0015] Figure 2 This is an exploded view of the insulating body and terminals of the plug connector described in this utility model.

[0016] Figure 3 This is a perspective view of the metal housing of the plug connector described in this utility model.

[0017] Figure 4 This is a perspective view of the terminals of the plug connector described in this utility model.

[0018] Figure 5 This is a three-dimensional assembly diagram of the socket connector of the board-to-board electrical connector assembly described in this utility model.

[0019] Figure 6 This is an exploded view of the socket connector described in this utility model.

[0020] Figure 7 This is a cross-sectional view of the socket connector described in this utility model. Detailed Implementation

[0021] Please see Figures 1 to 7 As shown, this utility model provides a board-to-board electrical connector assembly, which includes a plug connector 100 and a socket connector 200. The two are respectively installed on a circuit board and are electrically connected by mutual plugging and mating to complete the signal transmission between the two circuit boards.

[0022] like Figures 1 to 4 As shown, the plug connector 100 includes: a plug body 110, a plurality of plug terminals 120 housed within the plug body 110, and a plug housing 130 mounted on the plug body 110.

[0023] The plug body 110 includes an elongated main body 111 and a pair of widened ends 112 located at both ends of the main body 111 along its longitudinal direction. Figure 2 As shown, the main body 111 is frame-shaped, with a pair of elongated sidewalls 113, a pair of endwalls 114, and a rectangular insertion cavity 115 located inside the sidewalls 113 and endwalls 114. The sidewalls 113 and endwalls 114 are integrally connected. The widened end 112 is integrally connected to the endwalls 114, and the widened end 112 has a widened base plate 116 and a mounting wall 117 extending vertically upward from the edge of the widened base plate 116. The widened base plate 116 is integrally formed with the endwalls 114, and the widened base plate 116 is lower than the endwalls 114 in the vertical direction, or in other words, the endwalls 114 protrude beyond the widened base plate 116 in the vertical direction. Preferably, the lateral width of the widened base plate 116 is greater than the lateral width of the main body 111, and the mounting wall 117 is integrally connected to the endwalls 114. The widened base plate 116 is integrally connected, and a slot 118 for holding the plug housing 130 is formed on the mounting wall 117. The slot 118 is located on the top surface of the mounting wall 117 and extends further to the outer surface of the mounting wall 117. Preferably, a slot 119 for fixing the plug housing 130 is also formed between the mounting wall 117 and the widened base plate 116. The slot 119 can penetrate downward through the widened base plate 116, and the slot 119 is located between the mounting wall 117 and the end wall 114 of the main body 111.

[0024] The plug terminal 120 is provided with a vertically arranged contact arm 121, a folded arm 122 extending outward from the top of the contact arm 121, and a welding arm 123 extending outward from the bottom of the contact arm 121 to the main body 111. Figure 4As shown, the contact arm 121 has a contact area 124, and the thickness of the contact area 124 is less than the thickness of other parts of the contact arm 121. In other words, the contact arm 121 has a thinned portion 124 located in the middle of the contact arm 121, and the thinned portion 124 is recessed from the surface of the contact arm 121, facing the rectangular insertion cavity 115. The folding arm 122 has an arc-shaped top 125 and a downwardly extending extension arm 126. The welding arm 123 is located in the hollow area 127 (see below) between the main body 111 and the plug housing 130, and is used for welding to a circuit board. Preferably, the thinned portion 124 has a stepped portion 128 on its upper and lower sides, while the left and right sides of the thinned portion 124 are flush with the side edges 129 of the contact arm 121 (i.e., no stepped portion 128 is provided). This simplifies the manufacturing process and assembly difficulty of the terminal, while ensuring a relatively stable and reliable contact.

[0025] The plug housing 130 includes a left metal cover 131 and a right metal cover 132, which can be integrally connected or separately configured. Figure 3 As shown, both the left metal cover 131 and the right metal cover 132 are U-shaped, symmetrically arranged, and respectively installed on the left and right sides of the main body 111. Each of the left and right metal covers 131 and 132 has a narrow, elongated side cover 133, a pair of folded plates 134 formed by bending from both ends of the side cover 133 longitudinally, and a mounting arm 135 formed at the end of the folded plate 134. The side covers 133 are parallel to each other and arranged parallel to the side wall 113 of the main body 111, and the side covers 133 and the side wall 113 of the main body 111 are aligned. A hollow area 127 is formed between the welded arms 123 and the welded arms 123 are visible because the hollow area 127 is open from top to bottom. The folding plate 134 is fixed to the widened end 112 by the mounting arm 135. Specifically, the mounting arm 135 has an arc-shaped retaining arm 136 and a downwardly protruding pin 137. The arc-shaped retaining arm 136 is engaged in the slot 118, and the pin 137 is inserted into the slot 119, thereby fixing the folding plate 134 to the widened end 112. Figure 1 As shown, preferably, in the vertical direction, the bottom edge of the side cover 133 protrudes downward beyond the bottom edge of the folding plate 134.

[0026] like Figures 5 to 7 As shown, the socket connector 200 includes: a socket body 210, a plurality of socket terminals 220 housed within the socket body 210, and a socket housing 230 mounted on the socket body 210.

[0027] The socket body 210 includes a pair of elongated sidewalls 211, an elongated mating portion 212 between the two sidewalls 211, and a pair of endwalls 213 integrally connected to the longitudinal ends of the sidewalls 211. Figure 6 As shown, an annular groove 214 is formed between the mating portion 212 and the pair of sidewalls 211 for the insertion of the plug 100. Several terminal slots 215 are formed on both sides of the mating portion 212, extending vertically and penetrating downwards through the mating portion 212. The outer surface 217 of the sidewall 211 is recessed relative to the end wall 213. The end wall 213 has a pair of vertically penetrating mounting slots 216 for mounting and fixing the socket housing 230. Preferably, the thickness of the sidewall 211 is greater than the thickness of the mating portion 212, and the top surface of the sidewall 211 is higher than the top surface of the end wall 213.

[0028] The socket terminal 220 has a laterally extending bottom arm 221 and a curved docking arm 222 extending upward from one end of the bottom arm 221. The bottom arm 221 is straight, extending inward to the bottom of the docking portion 212, horizontally extending outward to the bottom of the side wall 211, and further extending outward beyond the side wall 211, and is located between the side wall 211 and the socket housing 230. The docking arm 222 is S-shaped, housed in the terminal grooves 215 on both sides of the docking portion 212, and protrudes from the terminal grooves 215 to electrically dock with the plug terminal 120. Preferably, the socket terminal 220 is embedded in the socket body 210 by injection molding or fixed to the socket body 210 by hot-melt process, making the connection between the two more stable and firm. The overall structure of the socket terminal 220 is relatively simple, with only a bend at the mating arm 222, while the bottom arm 221 adopts a straight design. The structure is simple and easy to manufacture and assemble, with better processing and assembly precision. At the same time, after the hot-melt process, it can ensure strong structural stability between the socket body 210 and the socket body 210.

[0029] The socket housing 230 includes a left shell 231 and a right shell 232, which can be integrally connected or separately arranged. The left shell 231 or the right shell 232 covers the socket body 210 from top to bottom, and both the left shell 231 and the right shell 232 are provided with an L-shaped lateral covering part 233 for covering the upper side and the outer side of the side wall 211 of the socket body 210. The lateral covering part 233 includes a horizontally arranged top plate 233a and a vertically arranged side plate 233b, and the top plate 233a is higher than the end covering part 234 in the vertical direction. Preferably, the left shell 231 and the right shell 232 are also provided with a pair of end covering parts 234 at their longitudinal ends for covering a pair of end walls 213 of the socket body 210. The lateral cover 233 is further provided with a plurality of spring tabs 235 arranged longitudinally on the side plate 233b for engaging with the plug housing 130. Preferably, a narrow cavity 218 is formed between the lateral cover 233 and the side wall 211 of the socket body 210, the top plate 233a covers the top of the cavity 218, and the side plate 233b covers the side of the cavity 218. Figure 7 As shown, the bottom arm 221 is exposed within the cavity 218 and does not protrude from the side plate 233b. Preferably, a portion of the top plate 233a covers the side wall 211 of the socket body 210, and the longitudinal ends of the top plate 233a are provided with a pair of downwardly bent fixing feet 236, which are inserted downward into the side wall 211 to achieve fixation with the side wall 211. The end cover 234 is L-shaped and covers the top and side surfaces of the end wall 213.

[0030] In summary, this utility model optimizes the structure of the plug terminal 120, using the thinning portion 124 and the stepped portion 128 to ensure contact reliability and reduce the manufacturing difficulty of the plug terminal 120. At the same time, it simplifies the structure of the socket terminal 220 by using a laterally extending bottom arm 221 that passes through the side wall 211 of the socket body 210 and protrudes out of the socket body 210. The overall structure is simple and the assembly is more convenient.

[0031] The above description is merely the preferred embodiment of this utility model and is not intended to limit this utility model in any way. Any possible variations and modifications made by those skilled in the art to the technical solution of this utility model without departing from the scope of the technical solution of this utility model using the methods disclosed above shall fall within the scope of protection of the claims.

Claims

1. A receptacle connector comprising a receptacle housing, a plurality of receptacle terminals received in the receptacle housing, a receptacle shell mounted on the receptacle housing, the receptacle housing being provided with a pair of side walls extending in an elongated manner, an elongated mating portion interposed between the side walls, and a pair of end walls integrally connected to the longitudinal ends of the side walls, characterized in that: The socket terminal has a horizontally extending bottom arm and a mating arm that extends upward in a curve from one end of the bottom arm; the bottom arm is straight and extends horizontally outward from the bottom of the mating part to the bottom of the side wall; the mating arm is S-shaped and distributed on both sides of the mating part.

2. The receptacle connector of claim 1, wherein: The socket terminals are embedded in the socket body by injection molding or fixed to the socket body by hot melting. An annular groove is formed between the pair of sidewalls and the mating part. The socket terminal portion protrudes into the annular groove to mate with a plug connector.

3. The receptacle connector of claim 2, wherein: The socket housing includes a left shell and a right shell, and a narrow cavity is formed between the left shell and the right shell and the side wall of the socket body. The end of the docking arm is exposed in the cavity for welding and fixing to a circuit board.

4. The receptacle connector of claim 3, wherein: The left and right shells are both covered on the socket body from top to bottom, and each of the left and right shells is provided with an L-shaped side cover and a pair of end cover parts connected to both ends of the side cover. The side cover and the end cover parts cover the side wall and the end wall respectively.

5. The receptacle connector of claim 4, wherein: The lateral covering includes a horizontally arranged top plate and a vertically arranged side plate. The top plate covers the top of the cavity and only partially covers the side wall of the socket body, while the side plate covers the side of the cavity.

6. The receptacle connector of claim 5, wherein: The outer surface of the sidewall is recessed relative to the end wall, thereby forming the elongated cavity between the sidewall and the side plate.

7. The receptacle connector of claim 6, wherein: The top plate is also provided with a pair of fixed feet that bend downward at both ends. The fixed feet are inserted downward into the side wall to be fixedly connected to the side wall. Several spring pieces are formed on the side plate.

8. The socket connector as described in claim 7, characterized in that: The thickness of the sidewall is greater than the thickness of the mating portion, and the top surface of the sidewall is higher than the top surface of the end wall.

9. The receptacle connector of claim 8, wherein: The end cover is L-shaped and covers the top and side surfaces of the end wall.

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