Board end electric connector

Abstract

The utility model discloses a board end electric connector, which comprises a connector body and a shell arranged outside the connector body, the connector body comprises a plastic part and a terminal, and the terminal is provided with a plugging end and a welding installation end which are exposed out of the plastic part. The board end electric connector further comprises a first weld leg structure used for being welded with the board end, and the first weld leg structure comprises a plurality of stacked weld legs. The board end electric connector is provided with the first welding leg structure corresponding to the larger welding hole of the board end, the gaps between the welding legs and the welding hole are reduced through the plurality of stacked welding legs, and the deviation problem caused by skew is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a board-end electrical connector. Background Technology

[0002] An electrical connector is an electronic component used to achieve electrical connections and is widely used in various electrical devices. Its function is to act as a bridge connecting points where circuits are blocked or between independent circuits, undertaking the task of transmitting current or signals.

[0003] Electrical connectors can be classified into wire-end connectors and board-end connectors based on their connection to the object they are connected to. Wire-end connectors are used to connect the mounting end of the electrical connector to the wire end, while board-end connectors are used to connect the mounting end of the electrical connector to the board end (such as a substrate, circuit board, etc.).

[0004] In the design of board-end connectors, the solder pad structure is a crucial part for achieving soldering to the board. Traditional solder pad structures are mostly single-piece metal sheets or pillars. This structure has certain limitations when dealing with solder holes of different or large sizes on the board. When a single-piece solder pad is inserted into a larger, mismatched solder hole, the large gap between the solder pad and the hole can easily lead to problems such as solder pad misalignment after soldering, increasing the difficulty of soldering and potentially affecting the stability and reliability of the connection. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a board-end electrical connector.

[0006] To solve the above-mentioned technical problems, the present invention provides a board-end electrical connector, including a connector body and a housing disposed outside the connector body. The connector body includes a plastic part and terminals. The terminals have an insertion end and a soldering end exposed outside the plastic part. The board-end electrical connector also includes a first solder foot structure for soldering to the board end. The first solder foot structure includes multiple stacked solder feet.

[0007] Furthermore, the first weld foot structure is integrally formed on the housing.

[0008] Furthermore, the housing is provided with a first window extending through its wall thickness direction, and the first weld foot structure is configured to include two weld feet, the first ends of the two weld feet are integrally connected to the two opposite edges of the first window, the second ends of the two weld feet extend in opposite directions and then extend outward along the wall thickness direction, and the sections of the two weld feet extending outward along the wall thickness direction are stacked on each other.

[0009] Furthermore, the first solder foot structure is disposed on the solder mounting end of the terminal.

[0010] Furthermore, among the multiple solder feet of the first solder foot structure, one solder foot is formed at the end of the welding mounting end of the terminal, and the remaining solder feet are welded to the outer surface of the one solder foot; or

[0011] The welding mounting end of the terminal is bent at least once along the length of the terminal to integrally form at least two weld legs stacked together.

[0012] Furthermore, the connector body is L-shaped, having a first portion distributed along a first direction and a second portion distributed along a second direction perpendicular to the first portion; the terminals are configured as a plurality, each having a first segment inserted into the first portion and a second segment inserted into the second portion, the front end of the first segment away from the second segment exposed in the first portion to form the plug-in end, and the rear end of the second segment away from the first segment exposed in the second portion to form the solder mounting end.

[0013] Furthermore, the thickness of the first part near the rear end of the second part is greater than its thickness away from the front end of the second part; the rear end of the first section passes through the rear end of the first part, the plug end of the first section is exposed on one side of the first part facing the second direction, and there is an elastic deformation space between the plug end of the first section and the first part.

[0014] Furthermore, the second part includes a base integrally formed with the first part and a cover snapped onto the rear side of the base away from the first part. The terminal is inserted into the first part and the second part from the rear side of the base toward the first part. The cover is used to cover the base to shield the part of the second section except for the welded mounting end.

[0015] Furthermore, the housing includes a housing sleeve fitted over the first part and a housing cover located on the rear side of the cover. The housing cover is formed by bending from the rear end of the housing sleeve, and the housing cover is fastened to the rear end of the housing sleeve by a snap-fit ​​structure.

[0016] Furthermore, at least one shell wall of the shell is provided with a spring piece, and a second window is provided on the shell wall at the position corresponding to the spring piece. The spring piece protrudes inward from the inner wall of the shell through the second window, and the spring piece can elastically deform outward when a force is applied outward along the wall thickness direction.

[0017] The board-end electrical connector of this utility model has the following beneficial effects: A first solder foot structure is configured corresponding to the larger solder holes on the board end. This structure reduces the gap between the solder feet and the solder holes through multiple stacked solder feet, mitigating misalignment caused by skewing. When setting the first solder foot structure on the housing, a first window is formed by stamping. The two opposite side edges of the first window are integrally stamped and bent into two stacked solder feet. The stamping process allows the first solder foot structure to be integrally connected to the housing, increasing solder foot connection performance and simplifying the manufacturing process. For the L-shaped board-end electrical connector, the second part of the plastic component is configured as a base integrally formed with the first part and a separate cover structure. The cover is detachably connected to the rear side of the base away from the first part by a snap-fit ​​mechanism, facilitating terminal insertion into the first and second parts. Simultaneously, the cover and base can effectively enclose the corresponding positions of the terminals within the second part. The presence of at least a spring-loaded structure on the housing increases the bonding force between the board-end electrical connector and complementary electrical connectors. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a structural schematic diagram of one embodiment of the board-end electrical connector of this utility model.

[0020] Figure 2 yes Figure 1 A structural diagram from another perspective.

[0021] Figure 3 yes Figure 1 Exploded view.

[0022] Figure 4 This is a schematic diagram of the connector body in one embodiment of the board-end electrical connector of this utility model.

[0023] Figure 5 yes Figure 4 Sectional view of AA.

[0024] The diagrams in the instruction manual are labeled as follows:

[0025] Connector body 100; plastic part 110; first part 11a; second part 11b; first insertion cavity 111; elastic deformation space 111a; upper stop part 111b; base 112; cover 113; second insertion cavity 114; channel 115; terminal 120; signal terminal 12a; power terminal 12b; detection terminal 12c; insertion end 121; solder mounting end 122; first section 123; second section 124; barb part 125; elastic contact part 126; restricted part 127; contact part 128; housing 200; first window 201; housing sleeve 210; spring piece 211; second window 212; housing cover 220; bending part 230; fastener 240; locking block 250; first solder foot structure 300; solder foot 310; second solder foot structure 400. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Please see Figures 1 to 5 In this article, combined with Figures 1 to 5 The illustrated structure provides an exemplary description of the board-end electrical connector of this utility model, so as to more clearly demonstrate the various components and mating relationships of the board-end electrical connector. It should be understood that although the board-end electrical connector shown in the figures is described in detail below as an example, it is not intended to limit the scope of the board-end electrical connector of this utility model. Apart from the components that solve the necessary technical problems of this utility model, the other components can be regarded as non-essential technical elements. These non-essential technical elements can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or these non-essential technical elements may not be needed in other embodiments.

[0030] Please see Figure 1 , Figure 2 and Figure 3 The illustrated board-side electrical connector includes a connector body 100, a housing 200 disposed outside the connector body 100, and a first solder joint structure 300 for soldering to a board (such as a circuit board). The first solder joint structure 300 is used for soldering to the board (not shown). The connector body 100 includes a plastic component 110 and terminals 120. The number of terminals 120 is typically configured to be multiple, for example, four terminals 120 shown in the figure. Each terminal 120 has a mating end 121 exposed outside the plastic component 110 and a solder mounting end 122. The mating end 121 is used for mating with a complementary mating end (not shown) of a complementary electrical connector, and the solder mounting end 122 is used for soldering to the board.

[0031] The first solder foot structure 300 includes multiple stacked solder feet 310, each of which can be configured as a sheet-like or strip-like metal structure. The stacking of multiple sheet-like or strip-like solder feet 310 increases the overall thickness of the first solder foot structure 300, making it suitable for larger solder holes on the board end and reducing the gap between the first solder foot structure 300 and the solder hole. This addresses issues such as solder foot misalignment caused by large openings on the board end and small individual solder feet. In specific implementations, the number and position of the first solder foot structure 300 are determined based on the number, position, and size of the openings on the board end. When the board end has both solder holes adapted to the individual sheet-like or strip-like second solder foot structure 400 and larger openings adapted to the first solder foot structure 300, the board end electrical connector is configured with the first solder foot structure 300 and the individual second solder foot structure 400 accordingly. That is, the difference between the first solder foot structure 300 and the second solder foot structure 400 is that the first solder foot structure 300 is composed of multiple individual solder feet stacked together, while the second solder foot structure 400 is a single solder foot (individual solder foot).

[0032] The first solder foot structure 300 can be disposed on the housing 200 (e.g., integrally formed with the housing 200) to achieve a stable connection between the housing 200 and the plate end. The first solder foot structure 300 can also be disposed on the solder mounting end 122 of the terminal 120 to achieve electrical signal transmission between the terminal 120 and the plate end. The first solder foot structure 300 can also be disposed on both the housing 200 and the terminal 120, meaning that the first solder foot structure 300 is disposed on both the housing 200 and the solder mounting end 122 of the terminal 120. The number of first solder foot structures 300 disposed on the housing 200 and / or on the terminal 120 is determined according to actual needs. In the illustrated embodiment, the housing 200 is provided with two second solder foot structures 400 (single solder foot, a known existing structure) and one first solder foot structure 300 (two solder feet 310 stacked together), and the welding mounting ends 122 of the four terminals 120 are all single solder foot structures (second solder foot structures 400) integrally formed on the terminals 120. It should be understood that in other embodiments, depending on the actual solder hole requirements, the first solder foot structure 300 (multiple solder feet 310 stacked together) can be provided on the welding mounting ends 122 of one or more terminals 120 or all terminals 120, and all solder foot structures on the housing 200 can be configured as first solder foot structures 300 according to actual needs.

[0033] In the embodiment shown, a first window 201 is provided on the housing 200 at a position corresponding to the first weld foot structure 300, extending through the wall thickness direction. The first weld foot structure 300 is configured to include two weld feet 310. The first ends of the two weld feet 310 are integrally connected to the two opposite edges of the first window 201, and the second ends of the two weld feet 310 extend outward along the wall thickness direction in opposite directions. The sections of the two weld feet 310 extending outward along the wall thickness direction are stacked on each other.

[0034] When at least one of the solder mounting ends 122 of the terminal 120 needs to be configured as the first solder foot structure 300, it can be achieved in the following manner: the end of the solder mounting end of the terminal 120 that needs to be configured as the first solder foot structure is formed into one of the solder feet of the first solder foot structure, and then the remaining solder feet of the first solder foot structure are stacked and soldered to the outer side of the end of the solder mounting end (i.e. the outer side of one of the solder feet); or, the solder mounting end of the terminal 120 is bent at least once along the length direction of the terminal 120 to integrally form at least two solder feet stacked together.

[0035] In the illustrated embodiment, the connector body 100 is L-shaped, and the plastic component 110 has a first portion 11a distributed along a first direction (X-axis direction) and a second portion 11b distributed along a second direction (Z-axis direction) perpendicular to the first portion 11a. Hereinafter, the end of the first portion 11a furthest from the second portion 11b is referred to as the front end, and the end closest to the second portion 11b is referred to as the rear end. The side of the second portion 11b closest to the first portion 11a is referred to as the front side, and the side away from the first portion 11a is referred to as the rear side.

[0036] Please see Figure 3 , Figure 4 and Figure 5 In this embodiment, both the first portion 11a and the second portion 11b are configured as plate-like or block-like structures. The thickness of the first portion 11a is distributed along the Z-axis direction, and its width is distributed along a third direction (Y-axis direction) perpendicular to the first direction. The thickness of the rear end of the first portion 11a (the end closer to the second portion 11b) is greater than that of its front end, such that one or both sides of the rear end of the first portion 11a in the thickness direction (the upper side and the lower side shown in the figure, which will be described below) protrude from the front end of the first portion 11a, thereby creating a step between the rear end and the front end of the first portion 11a.

[0037] The first portion 11a has a first insertion cavity 111 formed along the X-axis direction (distribution direction) for the terminal 120 to be inserted into. The first insertion cavity 111 extends through the front end of the first portion 11a along its thickness direction. An upper stop portion 111b is provided at the front end of the first insertion cavity 111 to prevent the front end (insertion end 121) of the terminal 120 from disengaging upwards (in the distribution direction of the second portion 11b) from the first insertion cavity 111. The insertion end 121 of the terminal 120 is inserted into the first insertion cavity 111 and can elastically deform along the thickness direction of the first portion 11a. Therefore, there is an elastic deformation space 111a between the insertion end 121 of the terminal 120 and the first portion 11a.

[0038] The second part 11b is vertically connected to the rear end of the first part 11a. The second part 11b includes a base 112 integrally formed with the first part 11a and a cover 113 snapped onto the rear side of the base 112 facing away from the first part 11a. A second insertion cavity 114 is formed between the cover 113 and the base 112. The terminal 120 is inserted from the rear side of the base 112 toward the first part 11a into the first insertion cavity 111 of the first part 11a and the second insertion cavity 114 of the second part 11b. The cover 113 is used to cover the base 112 to shield a section of the terminal 120 located in the second part 11b.

[0039] The terminals 120 are configured in multiples, including signal terminals 12a and power terminals 12b. Each terminal 120 has a first segment 123 inserted into the first portion 11a and a second segment 124 inserted into the second portion 11b. The front end of the first segment 123 is exposed in the first portion 11a along the Z-axis direction to form the plug-in end 121. The portion of the second segment 124, except for the solder mounting end 122, is disposed between the cover 113 and the base 112, and the rear end of the second segment 124 is exposed in the second portion 11b along the Y-axis direction (not limited to the Y-axis direction, for example, it can also be along the Z-axis direction or the X-axis direction) to form the solder mounting end 122. In the illustrated embodiment, the solder mounting end 122 of each terminal 120 is configured as a known second solder foot structure 400 (i.e., configured as an integrally formed single solder foot).

[0040] Specifically, the rear end of the first segment 123 passes through and is confined within the cavity located at the rear end of the first portion 11a on the first insertion cavity 111, and the second segment 124 also passes through and is confined within the second insertion cavity 114. In a specific implementation, barbs 125 can be provided on both the rear end of the first segment 123 and the lateral sides of the second segment 124 to achieve a tight fit with the first insertion cavity 111 and the second insertion cavity 114, respectively. The insertion end 121 of the first segment 123 is located in the cavity located at the front end of the first portion 11a on the first insertion cavity 111, and the insertion end 121 of the first segment 123 is exposed on the upper side surface of the first portion 11a (the side surface facing the second direction), and there is an elastic deformation space 111a between the insertion end 121 of the first segment 123 and the first portion 11a (the bottom surface of the first insertion cavity 111). The insertion end 121 of the first section 123 has an upwardly curved elastic contact portion 126 and a restricted portion 127 formed at the front end of the elastic contact portion 126 and located below the upper stop portion 111b.

[0041] The terminal 120 also includes a detection terminal 12c for detecting whether the complementary electrical connector is plugged in. The detection terminal 12c has a contact portion 128 exposed on the upper side of the first portion 11a and a soldering mounting end 122 exposed on the second portion 11b. The principle and structure of the detection terminal 12c can be described using known technology, and will not be elaborated here.

[0042] The housing 200 includes a housing sleeve 210 fitted outside the first part 11a and a housing cover 220 located on the rear side of the cover 113. The housing cover 220 is formed by bending from the rear end of the housing sleeve 210 and is fastened to the rear end of the housing sleeve 210 by a snap-fit ​​structure.

[0043] The housing 210 surrounds the outer periphery of the first portion 11a. The housing 210 has a first solder foot structure 300 and two second solder foot structures 400 arranged in a triangular pattern on one side wall (the transverse side wall shown in the figure) facing the same direction as the welding mounting end 122. At least one spring tab 211 is provided on the upper side wall, lower side wall, and / or the other transverse side wall of the housing 210. The spring tab 211 is used to abut against the complementary electrical connector along the wall thickness direction when the electrical connector and the complementary electrical connector are mated. Specifically, a second window 212 is provided on the housing wall at a position corresponding to the spring tab 211. The rear end of the spring tab 211 is connected to the rear edge of the second window 212, and the front end has an inwardly curved, protruding elastic abutment portion that extends inwardly from the inner wall of the housing 210. When a force is applied outward along the wall thickness direction to the spring tab 211, it can elastically deform outward.

[0044] The lateral edge of the cover 220 is bent by a bend 230 (see Figure 2 The cover 220 is bent and connected to the lateral edge of the housing 210, and fasteners 240 are provided on the housing cover 220 at positions corresponding to the upper and lower shell walls of the housing 210. The rear ends of the upper and lower shell walls of the housing 210 are respectively provided with locking blocks 250 that engage with the fasteners 240. The fastener 240 corresponding to the lower shell wall is formed by bending the lower edge of the cover 220 forward, and the fastener 240 corresponding to the upper shell wall is formed by stamping the rear side of the cover 220 forward. Correspondingly, a channel 115 is provided on the second part 11b at the position corresponding to the upper fastener 240 for it to pass through. The upper fastener 240 passes through the channel 115 and then engages with the locking block 250 on the upper shell wall.

[0045] Based on the above embodiments, the board-end electrical connector of this utility model has the following beneficial effects: A first solder foot structure 300 is configured corresponding to the larger solder hole at the board end. This structure reduces the gap between the solder foot and the solder hole by using multiple stacked solder feet 310, thus mitigating misalignment caused by skewing. When the first solder foot structure 300 is provided on the housing 200, a first window 201 is formed by stamping. The two opposite side edges of the first window 201 are integrally stamped and bent into two stacked solder feet 310. Using a stamping forming method, the first solder foot structure 300 can be integrally connected to the housing 200, increasing the connection performance of the solder feet 310 and simplifying the manufacturing process. For the L-shaped board-end electrical connector, the second part 11b of the plastic part 110 is configured as a base 112 integrally formed with the first part 11a and a separate cover 113 structure. The cover 113 is detachably connected to the base 112 away from the rear side of the first part 11a by snap-fit, which facilitates the insertion of the terminal 120 into the first part 11a and the second part 11b. At the same time, the cover 113 can also effectively wrap the corresponding position of the terminal 120 within the second part 11b. The presence of at least one spring tab 211 structure on the housing 200 can increase the bonding force between the board-end electrical connector and the complementary electrical connector.

[0046] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A board end electrical connector comprising a connector body and a housing disposed outside the connector body, the connector body comprising a plastic member and a terminal having a plug-in end and a solder mounting end exposed to the plastic member, characterized in that: Also included is a first leg structure welded to the plate end, the first leg structure including a plurality of stacked legs.

2. The board end connector according to claim 1, wherein: The first leg structure is integrally formed on the housing.

3. The board end connector according to claim 2, wherein: The housing is provided with a first window penetrating in the wall thickness direction thereof, and the first leg structure is configured to include two legs, the first ends of the two legs being integrally connected to two opposite edges of the first window respectively, the second ends of the two legs extending in opposite directions and then extending outward in the wall thickness direction, and the two legs extending outward in the wall thickness direction being stacked together.

4. The board end connector according to any one of claims 1 to 3, wherein: The first leg structure is arranged at the soldering mounting end of the terminal.

5. The board end connector according to claim 4, wherein: Among the plurality of legs of the first leg structure, the end portion of the soldering mounting end of the terminal forms one of the legs, and the remaining legs are welded to the outer side of the one leg; or The soldering mounting end of the terminal is bent at least once along the length direction of the terminal to integrally form at least two stacked legs.

6. The board end electrical connector of claim 1, wherein: The connector body is L-shaped, having a first portion distributed along a first direction and a second portion distributed along a second direction perpendicular to the first portion; the terminals are configured as a plurality of terminals each having a first section inserted into the first portion and a second section inserted into the second portion, the first section exposed to the first portion away from the front end of the second section to form the plug-in end, and the second section exposed to the second portion away from the rear end of the first section to form the soldering mounting end.

7. The board end connector of claim 6 wherein: The thickness of the first portion near the rear end of the second portion is greater than the thickness of the first portion away from the front end of the second portion; the rear end of the first section penetrates the rear end of the first portion, the plug-in end of the first section is exposed to one side of the first portion facing the second direction, and the plug-in end of the first section and the first portion have an elastic deformation space.

8. The board end connector of claim 6, wherein: The second portion includes a seat integrally formed with the first portion and a cover clamped to the rear side of the seat away from the first portion, the terminal is inserted into the first portion and the second portion from the rear side of the seat towards the first portion, and the cover is used to cover the seat to shield the part of the second section other than the soldering mounting end.

9. The board end connector of claim 8, wherein: The housing includes a shell sleeve covering the first portion and a shell cover arranged at the rear side of the cover, the shell cover is bent from the rear end of the shell sleeve, and the shell cover is clamped to the rear end of the shell sleeve through a clamping structure.

10. The board end connector of claim 9, wherein: At least one shell wall of the shell sleeve is provided with a spring piece, the shell wall is provided with a second window at a position corresponding to the spring piece, the spring piece protrudes inward from the inner wall of the shell sleeve through the second window, and the spring piece can elastically deform outward when a force is applied in the outward wall thickness direction.

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