WO2018077196A1

WO2018077196A1 - Connector

Info

Publication number: WO2018077196A1
Application number: PCT/CN2017/107679
Authority: WO
Inventors: 韩云钊; 李卫可; 胡凯; 姚文浩; 刘乃常; 王旭涛; 刘涛; 徐耕; 寇晋华; 申金科
Original assignee: 中航光电科技股份有限公司
Priority date: 2016-10-28
Filing date: 2017-10-25
Publication date: 2018-05-03
Also published as: CN106443898B; CN106443898A

Abstract

Disclosed is a connector. When a closing-in structure (21) of an outer shell (2) pushes locking jaws (11) on an inner shell (1), the locking jaws (11) are retracted to tightly clamp a clamping segment on a tail accessory (3). A protruding segment (31) is provided at the rear side of the clamping segment, and the protruding segment (31) protrudes out of the inner shell (1). The outer shell (2) is provided, at the rear side of the closing-in structure (21), with a mating segment in cooperation with the protruding segment (31) for guiding the movement. A sliding seal structure is provided between the protruding segment (31) and the mating segment. Thus, the locking jaws (11) at the rear end of the inner shell (1) are sealed so as to prevent moisture, dust and other impurities in the environment from entering the inner shell (1) and the outer shell (2) via gaps at the locking jaws (11), thereby enhancing the sealing performance of the connector.

Description

Connector

Technical field

The invention relates to a connector.

Background technique

A connector having a floating adjustable sealing mechanism, the optical fiber plug of the connector disclosed in the Chinese Patent Application Publication No. 2015-15.28, the disclosure of which is hereby incorporated by reference. The rear side is fixedly attached with a tail attachment, and the tail attachment is guided to move in the inner cavity of the inner casing of the connector, and at the same time, a sealing structure is arranged on the guiding movement matching section of the tail attachment and the inner casing, and the inner casing is provided with a sealing structure. The rear end is provided with a plurality of elastic locking claws spaced around the axis of the inner casing, and the outer casing is sleeved on the inner casing and is provided with a closing structure on the inner wall of the rear end, and the closing structure can be combined with the locking claw The pawl is retracted to clamp the clamping portion at the rear end of the tail attachment such that the fiber optic plug is secured within the inner housing by the tail attachment. However, after the connector is mated with the mating connector, the pawl clamps the tail attachment under the pushing of the cuff structure of the outer casing, and the position and tail between the pawls and the pawl away from the overhanging end. There will be gaps between the accessories. The moisture, dust and other impurities in the environment will enter the inner casing and the outer casing of the connector through these gaps, which will affect the sealing performance of the connector.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a connector that solves the problem of poor sealing performance of existing connectors employing an adjustable floating seal structure.

In order to achieve the above object, the technical solution of the connector of the present invention is: a connector comprising a plug and a connector housing, the connector housing includes an inner casing having a front end as a plug end, and a rear end of the inner casing is provided with a locking claw. The connector housing further includes an outer casing that is sleeved on the inner casing, and a rear end of the outer casing is provided with a closing structure for retracting the locking claw when the locking claw is pushed up, and the guiding movement in the inner casing Fitted with a tail attachment fixed to the plug, the rear end of the tail attachment is provided with a clamping section that cooperates with the claw, and the rear side of the clamping section is provided with a rearward extension and extending from the inner casing In the protruding portion, the outer casing is provided on the rear side of the closing structure with a matching portion for guiding and engaging the protruding portion of the tail attachment, and a sliding sealing structure is disposed between the protruding portion and the engaging portion.

An elastic member is disposed between the inner casing and the outer casing, and the outer casing is pushed and engaged with the inner casing by the elastic member to drive the inner casing to be inserted before the locking claw clamps the tail accessory. Move in direction.

An outer slanting edge is disposed at a front end position of the inner casing, and an inner rib is disposed on an inner wall of the outer casing on a rear side of the outer slanting edge, and the elastic member is sleeved on the inner casing and Located between the everted edge and the inner edge.

The front end of the connector housing is provided with a sealing structure, and the sealing structure is provided at the front end of the inner casing for The adapter has a sealing fit gasket and a sealing ring disposed between the outer casing and the inner casing, the outer casing or the inner casing being provided with a sealing ring seal when mating with the fitting connector Fitted with a sealing fit section.

The front end of the outer casing is rotatably equipped with a connecting cap, and the connecting cap is provided with a locking structure for locking with the fitted connector.

The front end of the outer casing is provided with a sealing structure for sealingly mating with an adapted connector.

The sealing structure is a sealing surface disposed on the outer periphery of the outer casing for sealingly mating with a sealing ring of the mating connector.

The invention has the beneficial effects that the connector of the invention shrinks the locking jaws on the clamping part of the tail fitting when the locking structure of the outer casing pushes the locking claw on the inner casing, and at the same time after the clamping section The side is provided with a protruding section, and the protruding section protrudes from the inner casing, and the outer casing is provided with a matching section with the protruding movement of the protruding section on the rear side of the closing structure, and is disposed between the protruding section and the fitting section There is a sliding sealing structure, so that the locking claws of the rear end of the inner casing are sealed, so as to prevent moisture, dust and the like in the environment from entering the inner casing and the outer casing through the gaps of the claws, thereby enhancing the sealing of the connector. performance.

DRAWINGS

1 is a schematic structural view of a first embodiment of a connector of the present invention;

Figure 2 is an exploded perspective view of Figure 1;

3 is a schematic view showing the state of the plug-in state of the second embodiment of the connector of the present invention.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

In a specific embodiment of the connector of the present invention, as shown in FIGS. 1 to 2, the connector includes a connector housing and a plug 4, and the connector housing includes an inner housing 1 and an outer casing that is fitted to the inner housing 1. Body 2, the front end of the inner casing 1 is a plug end for mating with an adapted connector, and the rear end of the inner casing 1 is provided with a plurality of locking claws 11 spaced apart around the inner casing axis, the outer casing A closing structure 21 is disposed on the position near the rear end of the second portion. When the closing structure 21 pushes the locking claw 11 forward, the locking claw 11 is contracted to clamp the clamping portion on the tail attachment 3. In the embodiment, the closing structure is The inner tapered surface may be a closed structure having a curved surface in other embodiments. The tail attachment 3 is guided and moved into the inner cavity of the inner casing 1, and the front end of the optical cable 6 is connected to the plug 4 through the tail attachment 3, so that the tail attachment 3 fixes the optical cable 6 and the plug 4 relatively fixedly, when the plug 4 is fitted After the socket in the connector is fitted into place, the inner casing can have a certain amount of floating relative to the plug. In the embodiment, the clamping section on the tail attachment 3 is provided with a serrated groove, which is convenient for the locking claw to clamp the tail attachment to improve the tensile resistance, and the rear side of the serrated groove extends rearward and protrudes from the inner casing, and constitutes The protruding portion 31 is provided on the outer side of the cuff structure on the rear side of the cuff structure, and is provided with a sliding engagement portion with the protruding portion. In order to achieve sealing of the inner casing of the connector, sliding between the protruding portion and the engaging portion is provided. a sealing structure, the sliding sealing structure comprising a sliding sealing surface formed by the outer circumference of the protruding section and The tail attachment sealing ring 23 is disposed on the inner wall of the outer casing and cooperates with the sliding sealing surface. In the embodiment, the protruding section and the engaging section have a circular cross section, and correspondingly, the tail accessory sealing ring 23 is also The circular sealing ring makes the sliding sealing mating surface easy to process.

The front end of the inner casing 1 is provided with an everted edge 12, and the inner wall of the outer casing 2 is provided with an inner stop 22 on the rear side of the everted edge 12, and the elastic member 5 is fitted on the inner casing 1 and is at the outer turn 12 Between the inner end 22 and the inner end 22, the length of the elastic member 5 and the spring constant are such that when the outer casing 2 is moved by the elastic member 5 to move the inner casing 1 into the plugging direction, the closing structure and the locking claw are prevented from contacting the compression pawl, thereby avoiding the lock. The claw contraction clamps the tail attachment, and in the present embodiment, the elastic member is a cylindrical spring, which can reduce the size of the connector in the circumferential direction. Both the everted and inner ribs are annular structures, which are convenient for processing on the one hand and uniform for the elastic members on the other hand.

The front end of the outer casing 2 is provided with a locking structure that cooperates with the housing of the fitted connector. In the embodiment, the locking structure is specifically a locking thread provided on the inner wall of the front end of the outer casing, such that the outer casing passes through the outer casing. The body can realize the locking fit of the connector and the adapter connector, and can clamp and fix the inner casing and the tail accessory, so that the installation operation is simple and convenient. A sealing ring mounting groove is disposed between the outer casing 2 and the inner casing 1 on the front side of the elastic member 5. The inner casing sealing ring 24 is disposed in the sealing ring mounting groove, and the axial dimension of the mounting groove is larger than the axial direction of the sealing ring. Dimensions, the inner casing sealing ring 24 is sealingly and sealingly fitted with the outer peripheral surface of the inner casing at the same position, so that the outer casing and the front end of the inner casing form a sliding sealing fit structure to seal the front end of the inner casing. At the end of the insertion position of the inner casing, a sealing gasket 13 is further provided for sealing the housing insertion position of the two adapters after the adapter connector is inserted, so that the inner casing sealing ring Under the combined sealing of the sealing member 13 and the sealing member 13, the plug 4 is completely sealed inside the connector after being inserted into the fitted connector; of course, in other embodiments, it is also possible to provide an outer circumference of the inner casing. The inner casing seal seals the mating engagement section, the seal engagement section being positioned such that the inner casing seal is just movable to the seal engagement section when the connector is mated with the mating connector.

When the connector of the present invention is used, the plug and the socket of the matching connector are first inserted into position, and then the assembled outer casing and the inner casing are fitted from the back to the front of the plug, and the outer casing passes through the process. The elastic member cooperates with the inner casing to push the inner casing forward, so that the inner casing is fitted on the tail attachment and the plug, so that the locking claw of the inner casing is prevented from being prematurely contracted by the force of the closing structure of the outer casing. The clamping section of the tail attachment, the plug that is inserted in place during this process will not be subjected to the force of the outer casing, thereby avoiding the damage of the plug; when the plug connector of the inner casing and the adapted connector are inserted into position, The housing is no longer moved forward, at which point the housing is moved forward to move the locking structure of the outer housing to the housing of the mating connector. During this process, the elastic member is compressed and the outer housing is opposite to the inner housing. The housing moves forward, and the cuff structure of the outer casing begins to act on the locking claw of the inner casing to contract the clamping section of the tail attachment to achieve the tensile function of the connector. Moreover, a protruding portion is disposed on the rear side of the clamping section, and the protruding section protrudes from the inner casing, and the outer casing is provided with a matching section with the guiding and moving movement of the protruding section on the rear side of the closing structure, A sliding seal structure is arranged between the outlet section and the mating section, so that the rear end of the inner casing The claws are sealed to prevent moisture, dust and the like in the environment from entering the inner casing and the outer casing through the gaps at the claws, and the connector enhances the sealing performance of the connector.

In the second embodiment of the connector of the present invention, as shown in FIG. 3, in the embodiment, the front end of the outer casing 2-1 is equipped with a connecting cap 2-4, and the locking structure is disposed on the connecting cap 2-4. The sliding groove 2-6 provided on the inner wall thereof is non-rotatably engaged with the sliding key 2-7 provided on the outer casing 2-1, and the locking structure can be locked with the housing 2-2 of the adapted connector. Tightly, the housing 2-2 is provided with a locking bead for locking, and the outer wall of the front end of the outer casing is provided with a recess corresponding to the locking bead, and the locking structure is specifically formed by the inner wall surface of the connecting cap, and the locking bead can be Pressed into the pocket to achieve locking, and the connecting cap and the outer casing are also equipped with springs 2-3 to prevent the connecting cap from being unlocked. A sealing surface is disposed on the outer periphery of the front end of the outer casing, and the sealing surface is matched with the sealing ring 2-5 after being fitted and fitted with the casing 2-2 to form a sealing structure, so as to achieve sealing at the insertion position, so that the outer casing of the outer casing There is no need to provide a sealing structure between them. Of course, in other embodiments, the sealing ring can also be disposed on the outer circumference of the outer casing, and the sealing ring can be sealingly matched with the sealing surface on the casing of the adapter connector. The structure is the same as that of the first embodiment and will not be described again.

In other embodiments of the present invention, the tail attachment sealing ring may be disposed on the protruding portion of the tail attachment, and at this time, a sliding sealing surface that is slidingly engaged with the sealing ring is disposed on the fitting portion of the outer casing; The cross section may also be square or elliptical. In this case, the engaging section and the corresponding sealing ring are also in an adapted shape, so that a rotation-locking relationship can be formed between the protruding section and the outer casing; the elastic component can also be a corrugated spring. Or other elastic members that can provide an axial force; the locking structure at the front end of the outer casing may also be a locking structure such as a spiral guide groove that engages with a staple on the housing of the fitted connector.

Claims

The connector includes a plug and a connector housing, the connector housing includes an inner housing having a front end as a plug end, the rear end of the inner housing is provided with a locking claw, and the connector housing further includes a sleeve on the inner housing The outer casing has a closing structure for retracting the locking claw when the locking claw is pushed and pushed, and the guiding movement in the inner casing is equipped with a tail attachment fixed to the plug, and the tail attachment The rear end is provided with a clamping section that cooperates with the claw, wherein the rear side of the clamping section is provided with a protruding section extending rearward and extending from the inner casing, the outer casing being The rear side of the closing structure is provided with a matching section of the protruding portion of the tail attachment guiding movement, and a sliding sealing structure is arranged between the protruding section and the fitting section.
The connector of claim 1 wherein the front end of the outer casing is provided with a locking structure for mating with an adapted connector.
The connector according to claim 1 or 2, wherein an elastic member is disposed between the inner casing and the outer casing, and the outer casing is pushed and engaged with the inner casing by the elastic member to drive The inner casing moves in the plugging direction before the pawl grips the tail attachment.
The connector according to claim 3, wherein an outer turn edge is provided at a front end position of the inner casing, and an inner edge of the outer wall of the outer casing is provided on an inner wall of the outer turn The elastic member is sleeved on the inner casing and between the everted edge and the inner rim.
The connector according to claim 2, wherein said connector housing front end is provided with a sealing structure, said sealing structure comprising a front end of the inner housing for sealingly mating with the mating connector. a gasket and a sealing ring disposed between the outer casing and the inner casing, the outer casing or the inner casing being provided with a sealing fitting portion sealingly engaging the sealing ring when mating with the fitting connector.
The connector according to claim 1, wherein the front end of the outer casing is fitted with a connecting cap, and the connecting cap is provided with a locking structure for locking with the fitted connector.
The connector of claim 6 wherein the front end of the outer casing is provided with a sealing structure for sealingly mating with an adapted connector.
The connector of claim 7 wherein said sealing structure is a sealing surface disposed on the outer periphery of said outer casing for sealing engagement with a sealing ring of the mating connector.