Plug connector

Abstract

The utility model provides a board-to-board electric connector combination, which comprises a plug connector and a socket connector, the plug connector comprises a plug body, a plurality of plug terminals accommodated in the plug body, and a plug shell arranged on the plug body; the plug body comprises a long and narrow main body part and a pair of widened end parts positioned at two longitudinal ends of the main body part, and each widened end part is provided with a widened bottom plate and a mounting wall vertically extending upwards from the edge of the widened bottom plate; the plug terminal is provided with a vertically arranged contact arm, a folding arm which is folded and extended outwards from the top of the contact arm, and a welding arm which extends out of the plug body from the bottom of the contact arm, the contact arm is provided with a thinning part, and the upper side and the lower side of the thinning part are respectively provided with a step part. Compared with the prior art, the structure of the plug terminal is optimized, the contact reliability is ensured by utilizing the thinning part and the step part, and the manufacturing difficulty of the plug terminal is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical connections, and more particularly to a plug 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 mating. Generally, BTO connectors have a relatively simple structure, often employing a longitudinal shape with two rows of conductive terminals. However, existing conductive terminals typically use flat contact surfaces for mating, which can easily lead to unstable contact. Improving contact stability through complex terminal structures would increase manufacturing difficulty and impact production efficiency. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a plug connector to improve the problem of unstable terminal contact in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a plug connector, comprising a plug body, a plurality of plug terminals housed within the plug body, and a plug housing mounted on the plug body. The plug body includes a long and narrow main body and a pair of widened ends located at both longitudinal ends of the main body. The widened ends are provided with a widened base plate and a mounting wall extending vertically upward from the edge of the widened base plate. The plug terminals are provided with a vertically arranged contact arm, a folding arm extending outward from the top of the contact arm, and a welding arm of the plug body extending outward from the bottom of the contact arm. The contact arm is provided with a thinning portion, and a stepped portion is provided on both the upper and lower sides of the thinning portion. The left and right sides of the thinning portion are flush with the side edges of the contact arm.

[0005] Furthermore, the thinning portion is located in the middle of the contact arm; the folding arm has an arc-shaped top and a downwardly extending extension arm.

[0006] Furthermore, a slot for fixing the plug housing is formed between the mounting wall and the widened base plate, and the slot can penetrate downward through the widened base plate.

[0007] Furthermore, the lateral width of the widened base plate is greater than the lateral width of the main body. The mounting wall is integrally connected to the widened base plate, and a slot for holding the plug housing is formed on the mounting wall. The slot is located on the top surface of the mounting wall and extends further to the outer surface of the mounting wall.

[0008] Furthermore, the plug housing includes a left metal cover and a right metal cover. Both the left and right metal covers are U-shaped and symmetrically arranged. Both the left and right metal covers are provided with a narrow side cover, a pair of folded plates formed by bending from both ends of the side cover longitudinally, and a mounting arm formed at the end of the folded plate. A hollow area is formed between the side cover and the main body to accommodate the welding arm.

[0009] Furthermore, the mounting arm is provided with an arc-shaped retaining arm and a downwardly protruding pin. The arc-shaped retaining arm is engaged in the retaining groove, and the pin is inserted into the slot, thereby fixing the folding plate to the widened end.

[0010] Furthermore, the main body is provided with a pair of elongated sidewalls, a pair of endwalls, and a rectangular insertion cavity located inside the sidewalls and endwalls. The thinned portion is formed by recessing from the surface of the contact arm and is disposed toward the rectangular insertion cavity.

[0011] Furthermore, in the vertical direction, the bottom edge of the side cover protrudes downward beyond the bottom edge of the folding plate.

[0012] Furthermore, the hollow area is formed between the side wall and the side cover, and the hollow area is arranged to be open from top to bottom so that the welding arm is visible.

[0013] Compared with the prior art, this utility model optimizes the structure of the plug terminal, uses thinning and stepped parts to ensure contact reliability, and reduces the manufacturing difficulty of the plug terminal. 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 7This 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 reduces the difficulty of the terminal, while ensuring a more 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 grooves 215 are formed on both sides of the mating portion 212, extending vertically and penetrating downwards through the mating portion 212. The outer surface of the sidewall 211 is recessed relative to the end wall 213. A pair of vertically penetrating mounting grooves 216 are provided on the end wall 213 for the installation and fixation of the socket housing 230. Preferably, the thickness of the sidewall 211 is greater than the thickness of the mating portion 212.

[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 extends inward to the bottom of the docking portion 212, extends outward to the bottom of the side wall 211 and further extends 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 and is received in the terminal slots 215 on both sides of the docking portion 212, and protrudes from the terminal slots 215 to electrically dock with the plug terminal 120.

[0029] The socket housing 230 includes a left housing 231 and a right housing 232, which can be integrally connected or separately arranged. The left housing 231 or the right housing 232 covers the socket body 210 from top to bottom, and both the left housing 231 and the right housing 232 are provided with an L-shaped lateral covering part 233 for covering the upper and outer sides of the side wall 211 of the socket body 210. Preferably, the left housing 231 and the right housing 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 covering part 233 is also provided with a plurality of longitudinally distributed spring pieces 235 for engaging with the plug housing 130.

[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 plug connector comprising a plug body, a plurality of plug terminals housed in the plug body, a plug housing mounted to the plug body, characterized in that: The plug body includes a long and narrow main body and a pair of widened ends located at both ends of the main body. The widened ends are provided with a widened base plate and a mounting wall extending vertically upward from the edge of the widened base plate. The plug terminal is provided with a vertically arranged contact arm, a folding arm extending outward from the top of the contact arm, and a welding arm of the plug body extending outward from the bottom of the contact arm. The contact arm is provided with a thinned portion, and a stepped portion is provided on both the upper and lower sides of the thinned portion. The left and right sides of the thinned portion are flush with the side edges of the contact arm.

2. The plug connector of claim 1, wherein: The thinning section is located in the middle of the contact arm; the folding arm has an arc-shaped top and a downwardly extending extension arm.

3. The plug connector of claim 2, wherein: A slot for fixing the plug housing is also formed between the mounting wall and the widened base plate, and the slot can penetrate downward through the widened base plate.

4. The plug connector of claim 3, wherein: The lateral width of the widened base plate is greater than the lateral width of the main body. The mounting wall is integrally connected to the widened base plate, and a slot for holding the plug housing is formed on the mounting wall. The slot is located on the top surface of the mounting wall and extends further to the outer surface of the mounting wall.

5. The plug connector of claim 4, wherein: The plug housing includes a left metal cover and a right metal cover. Both the left and right metal covers are U-shaped and symmetrically arranged. Both the left and right metal covers are provided with a narrow side cover, a pair of folded plates formed by bending from both ends of the side cover longitudinally, and a mounting arm formed at the end of the folded plate. A hollow area is formed between the side cover and the main body to accommodate the welding arm.

6. The plug connector of claim 5, wherein: The mounting arm has an arc-shaped retaining arm and a downwardly protruding pin. The arc-shaped retaining arm is engaged in the slot, and the pin is inserted into the slot, thereby fixing the folding plate to the widened end.

7. The plug connector of claim 6, wherein: The main body has a pair of elongated sidewalls, a pair of endwalls, and a rectangular insertion cavity located inside the sidewalls and endwalls. The thinned portion is formed by recessing from the surface of the contact arm and is disposed toward the rectangular insertion cavity.

8. The plug connector of claim 7, wherein: In the vertical direction, the bottom edge of the side cover protrudes downward beyond the bottom edge of the folding plate.

9. The plug connector as claimed in claim 8, characterized in that: The hollow area is formed between the side wall and the side cover, and the hollow area is arranged to be open from top to bottom so that the welding arm is visible.

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