CN114336115A

CN114336115A - Connector for substrate

Info

Publication number: CN114336115A
Application number: CN202111625654.XA
Authority: CN
Inventors: 邰军
Original assignee: Kunshan Jiahua Electronics Co Ltd
Current assignee: Kunshan Jiahua Electronics Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-12
Anticipated expiration: 2041-12-28
Also published as: CN114336115B

Abstract

The application discloses a connector for a substrate, which is provided with a housing which is provided with a plurality of signal terminals and is rectangular in a overlook view, and a reinforcing metal piece; the shell is provided with a bottom wall, a pair of short walls vertically arranged at two ends of the bottom wall in the long side direction, a pair of long walls vertically arranged at two ends of the bottom wall in the short side direction, and an island wall vertically arranged at the middle part of the bottom wall, wherein the bottom wall, the pair of short walls, the pair of long walls and the island wall jointly enclose to form an annular insertion cavity with an upward opening; strengthen the metalwork and include the first metalwork that combines through injection moulding and shell, first metalwork includes that an organic whole combines the bottom plate spare in the diapire, extend and an organic whole combine the transition mounting in the shortwall by the bottom plate spare, and further extend the cantilever form elastic arm that forms by the transition mounting, the elastic arm is extended to the insert intracavity by the medial surface of shortwall along the long edge direction of shell and is formed, this application connector for the base plate possesses stable contact point structure and rigid structure.

Description

Connector for substrate

Technical Field

The present application relates to the field of electrical connectors, and more particularly, to a connector for a substrate.

Background

With the miniaturization of electronic products, components mounted to the electronic products become compact and smaller. For example, a Board-to-Board (BTB) connector for electrically connecting two circuit substrates is mounted in a smartphone or a digital camera. With the miniaturization of smart phones or digital cameras, a receptacle connector (receptacle connector) constituting a BTB connector and a plug connector (plug connector) combined with the receptacle connector are simplified in a manner of having an ultra-narrow width (ultra-narrow width) of several millimeters.

The board-to-board connector generally comprises two parts, namely a plug connector and a socket connector, wherein the plug connector and the socket connector both comprise a plastic body and signal terminals fixed on the plastic body, the plastic body mainly plays a role in insulating and positioning the signal terminals, and the signal terminals mainly play a role in transmitting signals. Generally, the conventional plug connector and socket connector also add a protection bracket to enhance the strength of the protection bracket, and the protection bracket also can play a role in retaining the plug connector and the socket connector when they are mated, wherein in some of the prior art, the protection bracket can also be used as a current terminal. Therefore, the requirements on the bonding strength of the protection bracket and the plastic body, the length of the arm of force of the elastic arm on the protection bracket, the overall structural strength and stability of the board-to-board connector combined with the protection bracket are higher, and particularly under the design trend that the board-to-board connector is more and more miniaturized nowadays.

Therefore, it is necessary to provide a new design for achieving better effect.

Disclosure of Invention

The purpose of the present application is to provide a novel substrate connector having a stable contact point structure and a rigid structure.

In order to achieve the purpose, the application provides the following technical scheme:

a connector for a substrate for mounting to the substrate,

the signal connector comprises a housing which is provided with a plurality of signal terminals and is rectangular in a top view, and a reinforcing metal piece which reinforces two ends of the housing in a long side direction;

the housing has: the bottom wall, the pair of short walls, the pair of long walls and the island walls are arranged in an upright mode and form an annular insertion cavity with an upward opening;

the signal terminals are arranged and combined on the long wall, and each signal terminal is provided with an elastic contact part at least partially protruding into the insertion cavity and a substrate part extending out of the shell and electrically contacting with the substrate;

the reinforced metal part comprises a first metal part, the first metal part is combined with the shell through injection molding, and comprises a bottom plate part, a transition fixing part and a cantilever-shaped elastic arm, wherein the bottom plate part is integrally combined in the bottom wall, the transition fixing part is extended from the bottom plate part and integrally combined in the short wall, the cantilever-shaped elastic arm is further extended from the transition fixing part, the elastic arm is formed by extending the inner side surface of the short wall into the insertion cavity along the long edge direction of the shell, a gap is formed between the elastic arm and the inner wall surface of the adjacent long wall at the two ends of the shell along the long edge direction, and the elastic arm is used for being electrically connected with the butting connector.

Further, strengthen the metalwork still include with the second metalwork that first metalwork mutual independence set up, the second metalwork combines with the shell through the equipment, including the cover the end plate portion of the upper surface of shortwall, the upper plate portion that further extends the formation towards the long edge direction of shell by the both ends of end plate portion along the minor face direction of shell, the upper plate portion corresponds the upper surface that covers the both ends of the long edge direction of longwall along the shell, the top in clearance and the at least partial top of elastic arm.

Furthermore, the edges of the upper plate part and the end plate part on one side of the insertion cavity are provided with seamlessly connected guide surfaces.

Further, the bottom plate member is further extended and bent along both ends of the short side direction of the housing to form first holding portions, and the first holding portions cover the upper surface, the outer surface, and the inner surface of the long wall along both ends of the long side direction of the housing.

Further, the outer surfaces of both ends of the long wall in the longitudinal direction of the housing are formed with holding portions that embed free ends of first holding portions, which are exposed downward from the housing.

Further, the first holding portion and the upper plate portion are arranged on the upper surface of the housing in parallel along the long side direction of the housing, and the upper surface of the first holding portion is not higher than the upper surface of the upper plate portion along the up-down direction.

Further, the bottom plate piece further extends and bends along the one end of the long edge direction of shell and is formed with the second retaining part, the second retaining part cover in the terminal surface of island wall along the long edge direction of shell, the second retaining part still includes the extension protection portion that extends the both ends position of the upper surface of covering island wall along the long edge direction of shell, along the vertical direction, the upper surface of first retaining part is higher than the upper surface of island wall, the upper surface of island wall is higher than the upper surface of the part that the long wall combines a plurality of signal terminals.

Further, the upper plate portion is extended to form an upper plate outer side protection portion covering at least a part of the outer surface of the long wall, and a butt joint leg portion extended from the upper plate outer side protection portion and correspondingly combined with the substrate, the bottom plate portion is extended to form at least one butt joint portion correspondingly combined with the substrate along both ends of the long side direction of the housing, and the at least one butt joint portion and the butt joint leg portion are arranged side by side along the long side direction of the housing.

Furthermore, the first metal piece is not in electrical contact with the second metal piece.

Furthermore, positioning grooves are formed on the lower surfaces of the two ends of the shell along the long edge direction;

part of the transition fixing piece is exposed to the positioning groove to form a first positioning surface, and the first positioning surface is formed at the connecting position of the transition fixing piece and the bottom plate piece;

part of the elastic arm is exposed to the positioning groove to form a second positioning surface, and the second positioning surface is formed at the connecting position of the transition fixing piece and the elastic arm;

the plane where the first positioning surface is located is intersected with the plane where the second positioning surface is located.

Compared with the prior art, the beneficial effects of this application are: has stable contact point structure and rigid structure.

Drawings

Fig. 1 is a perspective view of a connector for a substrate according to the present invention.

Fig. 2 is a partial perspective view of the substrate connector of the present application, specifically showing two second metal members and a first metal member separated from the housing.

Fig. 3 is a top view of the substrate connector of the present application, particularly illustrating a top view of a second metal member separated from a housing.

Fig. 4 is a bottom view of the substrate connector of the present invention.

Fig. 5 is a side view of the connector for a substrate according to the present invention.

Fig. 6 is an enlarged view of the structure within the dashed line box in fig. 5.

Fig. 7 is a perspective view of the substrate connector of fig. 1 from another angle, which is enlarged to show partial details and to omit a partially symmetrical structure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For the accuracy of the entire description, all the references to the directions refer to fig. 1, and the direction of the X axis is defined as the long side direction of the bottom wall 11; the direction of the Z axis is defined as the short side direction of the bottom wall 11; the direction of the Y-axis is defined as the up-down direction, where the Y-axis is positive.

Referring to fig. 1 to 7, a connector for a substrate disclosed in the present application is generally mounted on a substrate (such as a PCB board, etc.) for being mated with a mating connector, so as to implement signal transmission between the substrate and the substrate. The connector for a substrate includes a housing 1 having a rectangular shape in a plan view, a plurality of signal terminals 3 coupled to the housing 1, and reinforcing metal members 2 for reinforcing both ends of the housing 1 in a longitudinal direction.

Referring to fig. 1 to 3, the housing 1 has: the island-shaped light emitting device includes a bottom wall 11, a pair of short walls 12 erected on both ends in a longitudinal direction of the bottom wall 11, a pair of long walls 13 erected on both ends in a short direction of the bottom wall 11, and an island-shaped island wall 14 erected in a middle portion of the bottom wall 11 and surrounded by the pair of short walls 12 and the pair of long walls 13. The bottom wall 11, the pair of short walls 12, the pair of long walls 13 and the island wall 14 jointly enclose an annular insertion cavity 10 with an upward opening. The insertion cavity 10 is used for inserting and extracting the butting connector.

The signal terminals 3 are arranged in two rows and respectively combined on the two long walls 13, and each signal terminal 3 includes a fixing portion 30 correspondingly fixedly combined with the long wall 13, an elastic contact portion 31 formed by extending the fixing portion 30 and partially protruding into the insertion cavity 10, and a substrate portion 32 extending from the fixing portion 30 to the outside of the housing 1 and correspondingly electrically contacting with the substrate. In the present application, the signal terminals 3 are assembled to the housing 1.

Referring to fig. 1 and fig. 2, the reinforcing metal member 2 includes a first metal member 21 and a second metal member 22 that are independent from each other. Wherein the first metal piece 21 is joined to the housing 1 by injection molding. The first metal member 21 includes a flat plate-shaped bottom plate 211 integrally combined in the bottom wall 11, a transition fixing member 212 extending from the bottom plate 211 and integrally combined in the short wall 12, and a cantilever-shaped elastic arm 213 further extending from the transition fixing member 212. The elastic arm 213 is formed by extending the inner surface of the short wall 12 into the insertion cavity 10 along the longitudinal direction of the housing 1. The elastic arm 211 forms a gap 20 with the inner wall surfaces of the adjacent long walls 13 at both end positions in the longitudinal direction of the housing 1. Two of the elastic arms 211 are located at both end positions of the insertion cavity 10 in the short side direction of the housing 1. The elastic arm 211 is used for elastically snapping or electrically connecting with a mating connector (not shown).

The first metal part 21 and the housing 1 are formed by integrally injection-molding and combining, and the structural strength of the housing 1 can be strengthened to the greatest extent by the structure of the first metal part 21, so that the housing has good rigidity.

The second metal fitting 22 is coupled to the housing 1 by assembly, and includes an end plate 221 covering the upper surface of the short wall 12, and an upper plate 222 formed by extending both ends of the end plate 221 in the short-side direction of the housing 1 further in the longitudinal direction of the housing 1. The upper plate portion 222 covers the upper surfaces of both ends of the long wall 13 in the longitudinal direction of the housing 1, above the gap 20, and above at least a part of the elastic arm 213. The edges of the upper plate portion 222 and the end plate portion 221 on the side of the insertion cavity 10 are formed with seamlessly connected guide surfaces 2201. The guiding surface 2201 may be a chamfer structure formed by obliquely cutting the edges of the upper plate portion 222 and the end plate portion 221; the upper plate portion 222 and the end plate portion 221 may have a smooth curved surface structure formed by stretching and bending the edges.

The upper plate portion 222 and the end plate portion 221 are used at both ends of the shield case 1 in the longitudinal direction, and particularly, when the mating connector is inserted, they can have impact resistance and guiding effects.

As shown in fig. 2, 3 and 6, the bottom plate 211 is further bent to form first retaining portions 2111 along two ends of the short side direction of the housing 1, and the first retaining portions 2111 cover the upper surface, the outer surface and the inner surface of two ends of the long wall 13 along the long side direction of the housing 1. The first holding portion 2111 and the upper plate portion 222 are arranged on the upper surface of the housing 1 in the longitudinal direction of the housing 1, and the upper surface of the first holding portion 2111 is not higher than the upper surface of the upper plate portion 222 in the up-down direction.

The first retaining portion 2111 can make the first metal piece 21 more stably combined with the housing 1 on the one hand, and at the same time, on the other hand, plays an auxiliary guiding role when the mating connector is inserted into the insertion cavity 10. Since the edge portion (including the guiding surface 2201) of the upper plate portion 222 on the side close to the insertion cavity 10 is suspended in the vertical direction, it is very easy to be deformed by impact when the mating connector is inserted, especially the chamfered position (position indicated by reference numeral 220 in fig. 1) on the inner side of the upper plate portion 222, and the second metal member 22 needs to have an effect of preferentially discharging static electricity. Preferably, the upper surface of the first retaining portion 2111 is slightly lower than the upper surface of the upper plate portion 222 in the up-down direction. The first retaining portion 2111 is provided to effectively prevent the edge portion of the upper plate portion 222 on the side closer to the insertion cavity 10 from being damaged or irreversibly deformed.

Referring to fig. 2, 4 and 7, clamping portions 131 are formed on outer surfaces of two ends of the long wall 13 along a longitudinal direction of the housing 1, the clamping portions 131 embed free ends of the first retaining portions 2111 therein, and the free ends of the first retaining portions 2111 are exposed out of the housing 1 downward, so as to be used for positioning the first metal piece 21 by a mold core (not shown) during injection molding and enhance a bonding strength between the first metal piece 21 and the housing 1.

As shown in fig. 2, a second holding portion 2112 is further formed by extending and bending one end of the bottom plate member 211 in the longitudinal direction of the housing 1, the second holding portion 2112 covers the end face of the island wall 14 in the longitudinal direction of the housing 1, and the second holding portion 2112 further includes an extension protection portion 2113 extending and covering the positions of both ends of the upper surface of the island wall 14 in the longitudinal direction of the housing 1. In the up-down direction, one of the embodiments presented in this application is: the upper surface of the extended guard portion 2113 is flush with the upper surface of the island wall 14, the upper surface of the first holding portion 2111 is higher than the upper surface of the island wall 14, and the upper surface of the island wall 14 is higher than the upper surface of the portion where the long wall 13 joins the plurality of signal terminals 3. When the butting connector is butted, the butting connector can be ensured to be preferentially contacted with the second metal piece 22 for guiding insertion, and in addition, the signal terminal 3 can be ensured to be finally electrically contacted with the butting connector.

The bottom plate member 211 covers all the positions of the insertion cavity 10 at both ends of the island wall 14 in the longitudinal direction of the housing 1, and is provided with a first holding portion 2111, a second holding portion 2112, an extension protecting portion 2113, and a portion where the first metal member 21 is embedded in the short wall 12 (see fig. 2 in combination with fig. 1 and 3). The structural strength of the housing 1 can be reinforced to the maximum extent, so that it has good rigidity.

As shown in fig. 1, 2 and 7, the upper plate portion 222 extends to form an upper plate outer protection portion 2221 covering at least a part of the outer surface of the long wall 13 and a docking leg portion 2222 formed by further extending the upper plate outer protection portion 2221 and correspondingly coupled to the substrate, the bottom plate member 211 further extends to form at least one docking portion 2114 correspondingly coupled to the substrate at two ends of the housing 1 in the longitudinal direction, and the at least one docking portion 2114 and the docking leg portion 2222 are arranged side by side in the longitudinal direction of the housing 1. The first metal part 21 and the second metal part 22 are not in electrical contact.

Referring to fig. 2, 4 and 7, the housing 1 has positioning grooves 101 formed on the lower surfaces of the two ends along the longitudinal direction. Part of the transition fixing piece 212 is exposed to the positioning groove 101 to form a first positioning surface 2121; a portion of the elastic arm 213 is exposed into the positioning groove 101 to form a second positioning surface 2131. In the present application, the first locating surface 2121 is formed at the connection location of the transition fixture 212 and the bottom plate 211; the second positioning surface 2131 is formed at the connecting position of the transition fixing member 212 and the elastic arm 213, and the plane of the first positioning surface 2121 intersects with the plane of the second positioning surface 2131, preferably in a perpendicular state. When injection molding is performed, the mold is inserted into the positioning groove 101 and correspondingly pressed against the first positioning surface 2121 and the second positioning surface 2131, so as to position the first metal piece 21. In the connector for the substrate, the elastic arm 213 is designed to be longer and directly extend out of the short wall 12, so that the elastic arm 213 is easily deflected due to factors such as high temperature during injection molding, and the positioning elastic arm 213 can be more accurately positioned by designing the structure of the positioning groove 101. In more detail, the positioning groove 101 is formed on the lower surface of the short wall 12 adjacent to the bottom wall 11.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A connector for a substrate, for fitting to a substrate, characterized in that:

2. The connector for a substrate according to claim 1, wherein: strengthen the metalwork still include with the second metalwork that first metalwork mutual independence set up, the second metalwork combines with the shell through the equipment, including covering the end plate portion of the upper surface of shortwall, the upper plate portion that further extends the formation towards the long edge direction of shell by the both ends of end plate portion along the minor face direction of shell, the upper plate portion corresponds the upper surface that covers the both ends of the long edge direction of longwall along the shell, the top in clearance and the at least partial top of elastic arm.

3. The connector for a substrate according to claim 2, wherein: the edges of the upper plate part and the end plate part at one side of the insertion cavity are provided with guide surfaces which are connected in a seamless mode.

4. The connector for a substrate according to claim 2, wherein: the bottom plate piece further extends and bends along two ends of the short side direction of the shell to form a first holding portion, and the first holding portion covers the upper surface, the outer surface and the inner surface of the two ends of the long wall along the long side direction of the shell.

5. The connector for a substrate according to claim 4, wherein: the outer surfaces of the two ends of the long wall along the long side direction of the shell are provided with clamping parts, the clamping parts embed the free ends of the first holding parts, and the free ends of the first holding parts are exposed out of the shell downwards.

6. The connector for a substrate according to claim 4, wherein: the first holding portion and the upper plate portion are arranged on the upper surface of the housing side by side in the long side direction of the housing, and the upper surface of the first holding portion is not higher than the upper surface of the upper plate portion in the up-down direction.

7. The connector for a substrate according to claim 2, wherein: the bottom plate piece further extends and bends along one end of the long side direction of the shell to form a second holding portion, the second holding portion covers the end face of the island wall along the long side direction of the shell, the second holding portion further comprises an extending protection portion which extends and covers the upper surface of the island wall along the two end positions of the long side direction of the shell, the upper surface of the first holding portion is higher than the upper surface of the island wall along the vertical direction, and the upper surface of the island wall is higher than the upper surface of a part of the long wall combined with the signal terminals.

8. The connector for a substrate according to claim 2, wherein: the upper plate part is extended to form an upper plate outer side protection part covering at least part of the outer surface of the long wall, and a butt joint pin part which is further extended from the upper plate outer side protection part and correspondingly combined with the substrate, the two ends of the bottom plate part along the long side direction of the shell are further extended to form at least one butt joint part correspondingly combined with the substrate, and the at least one butt joint part and the butt joint pin part are arranged side by side along the long side direction of the shell.

9. The connector for a substrate according to claim 2, wherein: the first metal piece is not electrically contacted with the second metal piece.

10. The connector for a substrate according to any one of claims 1 to 9, characterized in that:

the lower surfaces of two ends of the shell along the long edge direction are provided with positioning grooves;