CN110797692A

CN110797692A - Plug for inter-board connector

Info

Publication number: CN110797692A
Application number: CN201910926739.8A
Authority: CN
Inventors: 田建伟; 郑伟涛; 管鹏举; 石晓强
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-02-14

Abstract

The utility model provides an inter-board connector plug, be equipped with spring floating structure between the shell body of plug and the interior casing, this spring floating structure includes and provides the floating spring that elastic force made interior casing of plug and socket shell carry out the butt joint of floating between shell body and interior casing and provide elastic force when plug and socket are pegged graft through locking structure spacing when shell body and interior casing assembly. The spring floating structure is arranged between the inner shell and the outer shell of the plug, floating butt joint of the inner shell of the plug and the inner shell of the socket is achieved when the plug and the socket are in butt joint, and compared with floating butt joint achieved by the existing mechanical cantilever structure, the service life of a connector between boards can be prolonged, and connection reliability can be improved.

Description

Plug for inter-board connector

Technical Field

The invention belongs to the technical field of connectors between boards, and particularly relates to a plug for a connector between boards.

Background

In an optical communication system, a printed board is generally used as a carrier to integrate optical and electronic components, so as to realize transmission of an optical-electrical signal. The printed board is divided into a back board and a sub board, wherein the back board is vertically arranged, the sub board is horizontally arranged, and the back board and the sub board need to be connected to realize signal transmission. Traditional connected mode adopts the optical jumper wire to realize the intermediate transfer of backplate and daughter board, but a large amount of optical jumper wires arrange and consume the space, and installation wiring is mixed and disorderly, is unfavorable for the later maintenance. Aiming at the problem, the optical fiber connectors between the boards are produced, the hard connection between the back board and the daughter board can be realized through the optical fiber connectors between the boards, the hard connection can be directly plugged and pulled out along with the printed board, the high-speed safety data transmission is realized, and the optical fiber connector has the advantages of large connection density, wiring space saving, convenience in installation and maintenance and the like.

Due to the fact that large assembly errors exist in the opposite insertion of the back plate and the daughter board, the connector between the boards needs to have certain locking and floating capabilities after being butted along with the insertion of the printed board, on one hand, the optical contact is required to be locked and butted in a floating state, and on the other hand, the floating amount of the connector is larger than the assembly errors between the back plate and the daughter board, so that the problem that the connector and the printed board cannot be inserted in place simultaneously is solved. The locking floating structure adopted by the existing inter-board connector is usually realized by matching a mechanical cantilever structure, and the structure has the defects that: in repeated plugging and unplugging use, the locking structure is easy to wear, and if the structural design is unreasonable, the fracture condition is easy to occur, and the service life of the locking structure can only reach dozens of times.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a plug capable of improving the service life and reliability of a board-to-board connector.

The purpose of the invention is realized by adopting the following technical scheme. According to the plug for the inter-board connector, the spring floating structure is arranged between the outer shell and the inner shell of the plug, and comprises the floating spring which is limited between the outer shell and the inner shell through the locking structure when the outer shell and the inner shell are assembled and provides elastic force to enable the inner shell of the plug to be in floating butt joint with the shell of the socket when the plug is plugged in the socket.

Furthermore, the front end of the plug is used as a plug-in end, the locking structure comprises a first locking hook which is arranged on the outer shell and extends backwards, and a second locking hook which is arranged on the inner shell and forms stop matching with the first locking hook when the outer shell and the inner shell are assembled so as to limit the floating spring between the outer shell and the inner shell.

Furthermore, the end face of the outer shell is provided with a groove for accommodating the first locking hook and providing a deformation space for the first locking hook contacting with the second locking hook when the outer shell is assembled with the inner shell.

Furthermore, the front end of the first locking hook and the rear end of the second locking hook are both provided with a guide inclined surface which is used for guiding the second locking hook to cross the first locking hook when the outer shell and the inner shell are assembled so as to form stop matching.

Furthermore, the spring floating structure further comprises a channel for placing the floating spring, and a limit boss for compressing the floating spring to provide elastic force when the plug and the socket are plugged, wherein one of the channel and the limit boss is arranged in the outer shell, and the other one of the channel and the limit boss is arranged on the inner shell.

According to the plug, the spring floating structure is arranged between the inner shell and the outer shell, floating butt joint of the inner shell of the plug and the inner shell of the socket is realized during butt joint of the plug and the socket, and compared with floating butt joint realized by the existing mechanical cantilever structure, the service life of a connector between boards can be prolonged, and the connection reliability can be improved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is an exploded view of an embodiment of a plug for an inter-board connector according to the present invention.

Fig. 2 is a schematic view of the locking structure in the present embodiment.

Fig. 3 is a schematic view of the spring floating structure in this embodiment.

Fig. 4 is an exploded view of a receptacle adapted to the plug of the present embodiment.

Fig. 5 is a perspective view of the plug and the receptacle when they are inserted.

Fig. 6 is a schematic sectional view of the plug receptacle when inserted.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 1, fig. 4, fig. 5 and fig. 6, which illustrate an inter-board connector formed by plugging a plug and a receptacle. The inter-board connector comprises a plug 3 fixedly connected to the daughter board 1 and a socket fixedly connected to the back board 2 and in adaptive plug connection with the plug. With the front end of the plug as the plugging end, the plug 3 includes an outer housing 302 fixedly connected to the daughter board 1 through four locking studs 301, and an inner housing 303 installed in the outer housing through the matching of keys and key slots and floating assembled with the outer housing, and a first contact 501 is provided in the inner housing 303. The socket comprises a socket housing 401 fixedly attached to the back plate 2 by two locking nuts 402, and a second contact member 502 is arranged in the socket housing 401. In the embodiment, the mating male connector MT-type contact element in the plug is used as a first contact element, the mating female connector MT-type contact element in the socket is used as a second contact element, the arrangement modes of the MT-type contact elements in the plug and the socket are all 1 × 4, and the inter-board connector realizes 48-path, 96-path or 144-path optical signal transmission simultaneously through the butt joint of the male connector MT-type contact element and the female connector MT-type contact element.

In order to realize the floating butt joint of the plug and the socket, the invention arranges a spring floating structure between the outer shell and the inner shell of the plug, and the spring floating structure comprises a floating spring which is limited between the outer shell and the inner shell through a locking structure when the outer shell and the inner shell are assembled and provides elastic force to enable the inner shell of the plug to be in floating butt joint with the shell of the socket when the plug is plugged in the socket.

Referring to fig. 1 to 2, the locking structure in this embodiment adopts two locking hooks that are engaged with each other. Four first locking hooks 3021 extending backwards are arranged inside the plug outer shell 302 in a vertically symmetrical manner, and a guide inclined surface is arranged at the front end of each first locking hook 3021; two second locking hooks 3031 which are arranged in parallel are respectively arranged on the upper side and the lower side of the rear end of the plug inner shell 303, a guide inclined plane is arranged at the rear end of each second locking hook 3031, the inner shell 303 is arranged in the outer shell 302 from front to back through the matching of a key and a key groove when the outer shell and the inner shell are assembled, the second locking hooks 3031 pass over the first locking hooks 3021 through the matching of the two guide inclined planes, and then the front ends of the second locking hooks and the rear ends of the first locking hooks form stop matching to prevent the inner shell from being separated from the outer shell, so that the floating spring 6 is limited between the outer shell and the inner shell of the plug. The present embodiment employs a locking hook as the locking structure, although other types of locking structures may be employed in other embodiments of the invention.

Referring to fig. 5, in the present embodiment, a groove 3022 is respectively formed on the upper end surface and the lower end surface of the plug outer housing opposite to the four first locking hooks, for accommodating the first locking hook 3021. When the inner shell and the outer shell of the plug are assembled, the first locking hook is deformed after being contacted with the second locking hook, and the groove can provide a space for elastic deformation of the first locking hook, so that the deformation force of the locking hook is reduced and shared, and the assembly is convenient.

Referring to fig. 1 and fig. 3, the spring floating structure of the present embodiment further includes a limiting boss and a channel that are matched with each other. Two limiting bosses 3023 which are distributed vertically and symmetrically are arranged inside the plug outer shell 302 and are positioned at the rear side of the first locking hook; the plug inner housing 303 located between the two second locking hooks 3031 extends backwards to form a boss 3032, and two vertical plates 3033 located below the boss and distributed oppositely, the boss, the two vertical plates and the inner housing together form a channel 7 for placing the floating spring 6, although in other embodiments of the present invention, the channel may be formed in other structural manners; the limiting boss can also be arranged at the rear end of the plug inner shell, and the channel is arranged in the plug outer shell. During assembly, the two floating springs 6 are respectively placed in the two channels 7 which are distributed at the rear end of the inner shell from top to bottom, then the inner shell is arranged in the outer shell from front to back until the front end of the second locking hook and the rear end of the first locking hook form a stop fit, the floating springs are limited between the channels on the inner shell of the plug and the limiting bosses of the outer shell of the plug, at the moment, the limiting bosses 3023 are positioned behind the channels 7 and are abutted against the floating springs 6 placed in the channels, and the assembly of the inner shell and the outer shell of the plug is completed.

Referring to fig. 6, when the plug and the socket adapted thereto are inserted to form the board-to-board connector according to this embodiment, the socket housing 401 and the plug inner housing 303 are pushed to be dead, the socket housing pushes the inner housing to move backward, so that the first locking hook 3022 and the second locking hook 3031 are separated, the plug inner housing moves backward, the limiting boss 3023 compresses the floating spring 6, the spring provides an elastic force to realize the floating butt joint of the plug inner housing and the socket housing, and the board-to-board connector has a spring floating function.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.

Claims

1. A plug for an inter-board connector is characterized in that: the utility model discloses a socket, including the plug, be equipped with the outer casing of plug and interior casing, be equipped with spring floating structure between the shell body of plug and the interior casing, spring floating structure includes and provides the floating spring that elastic force made interior casing of plug and socket shell float the butt joint when outer casing and interior casing assembly through the locking structure spacing between outer casing and interior casing and when plug and socket are pegged graft.

2. The plug for a board-to-board connector according to claim 1, wherein: the front end of the plug is used as a plug-in end, the locking structure comprises a first locking hook which is arranged on the outer shell and extends backwards, and a second locking hook which is arranged on the inner shell and forms stop matching with the first locking hook when the outer shell and the inner shell are assembled so as to limit the floating spring between the outer shell and the inner shell.

3. The plug for a board-to-board connector according to claim 2, wherein: the terminal surface of shell body is equipped with and is used for holding first locking hook and provides the recess of deformation space with the first locking hook of second locking hook contact when shell body and interior casing assembly.

4. The plug for a board-to-board connector according to claim 2, wherein: the front end of the first locking hook and the rear end of the second locking hook are respectively provided with a guide inclined surface which is used for guiding the second locking hook to cross the first locking hook when the outer shell and the inner shell are assembled so as to form stop matching.

5. The plug for a board-to-board connector according to claim 1, wherein: the spring floating structure further comprises a channel for placing the floating spring and a limiting boss for compressing the floating spring to enable the floating spring to provide elastic force when the plug and the socket are plugged, one of the channel and the limiting boss is arranged inside the outer shell, and the other one of the channel and the limiting boss is arranged on the inner shell.