CN102117991B

CN102117991B - Waterproof connector

Info

Publication number: CN102117991B
Application number: CN 201110032767
Authority: CN
Inventors: 胡国闯; 田克先; 孙晓军
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2011-01-30
Filing date: 2011-01-30
Publication date: 2012-12-26
Anticipated expiration: 2031-01-30
Also published as: CN102117991A

Abstract

The invention discloses a waterproof connector, which comprises a connector housing provided with an installation channel inside, a window communicating with the installation channel is opened on the outer surface of the connector housing, and a cover covering the window is arranged on the connector housing. The end cover of the end cover is interposed between the end cover and the connector housing to seal the window. A pressure balance hole is provided through the bottom surface and the top surface of the end cover. The waterproof connector of the present invention can increase the service life of the sealing disk and simultaneously improve the reliability of the waterproof seal of the connector.

Description

Water-proof connector

Technical field

The present invention relates to be used for the connector of signal transmission.

Background technology

The water-proof connector that is used for deepwater environment; The outlet direction requirement of line cable for satisfying; Being used for the inserted terminal corresponding and being used on same straight line, not extending but the part (being generally L shaped) of turning round through the connector middle part is connected of connector with the corresponding end of incoming cables of cable with intermateable connector; Like this when using linearly extended contact; Because it is inconsistent with the bearing of trend of end of incoming cables; The afterbody of contact just can not be exposed at the end of incoming cables of connector and be connected (the general employing welded, and also can adopt crimping) that can not implement cable and contact in the end of incoming cables of connector, so just need the round part branch of connector offer face the contact afterbody the wiring window to make things convenient for wiring.And the waterproof sealing at this window place is realized through press-fiting sealing ring and end cap on the window in the prior art; Sealing ring is located between the connector shell around end cap and the window; Sealing ring in the slit of the junction of end cap and connector shell just will receive the long term of external high pressure hydraulic pressure like this, and the sealing ring under long term curls inward can occur or present the arcuation attitude and cause seal failure.

Summary of the invention

The object of the present invention is to provide a kind of water-proof connector, the sealing ring that solves wiring window of the prior art place is subject to the external water pressure effect and the problem that lost efficacy.

Technical scheme of the present invention is: a kind of water-proof connector; Establish the connector shell of installation channel in comprising; Connector shell comprise be used for the grafting end corresponding with intermateable connector, be used for the corresponding inlet wire end of cable and be connected in the grafting end and the inlet wire end between the part of turning round; Be provided with the contact that afterbody extends towards the part of turning round in the installation channel in the said grafting end; Offer on the outer surface of the said part of turning round communicate with installation channel, over against the window of said contact afterbody; Be equipped with the end cap that is placed on the said window on the said connector shell; Be folded with the sealing disc of airtight said window between said end cap and the connector shell, be provided with the end cap mating surface corresponding with end cap on the outer surface of connector shell around the said window, the end cap mating surface comprises being used for cooperating with end cap and compressing the lower seal part that seals disc jointly around the window setting; Middle part, said end cap bottom surface is provided with the water groove over against the window place; Connect between the groove bottom of water groove and the end face of end cap and be provided with pressure compensation opening, approach on the bottom surface of end cap or directly in the notch mouth of water groove be provided with along the place with said connector shell on the lower seal part corresponding, around the top sealed portion of said water groove.

Also be provided with the following pressing section that is used for the end cap compression fit in the periphery of its lower sealing surface part on the end cap mating surface of said connector shell, the bottom surface of said end cap is provided with and the said last pressing section of the corresponding compression fit of pressing section down.

Said sealing disc edge part is provided with the flange on the bottom surface, top that is raised in disc of annular spread; Said lower seal partly comprises the following installation annular groove that is used to install the flange that seals disc, and said top sealed portion comprises upward installation annular groove flange, corresponding with the said annular groove of installation down that is used to install the sealing disc.

The said annular groove of installation down is the low chamfering conical surface in middle height edge near the trough wall surface of window.

Said upward installation annular groove is the low chamfering conical surface in middle height edge near the trough wall surface of said water groove.

The place of keeping to the side of said end cap is useful on the connecting hole that is connected with connector shell along circle distribution; Other is provided with screw and passes connecting hole and penetrate on the connector shell in the corresponding screw hole that is provided with and end cap and connector shell are fixed together, and will seal disc and be pressed between end cap and the connector shell.

End cap end face around said each connecting hole is provided with the installation step that is used to cooperate said screw that is lower than end cap end face middle part.

The corner location of said end cap also is provided with arc notch, and the connector case surface of corresponding said arc notch position is provided with the panel bolts installing hole.

Water-proof connector of the present invention; Owing to have pressure compensation opening on the end cap; Water can get into the water groove from pressure compensation opening; Make on can be from water groove mouth along the top sealed portion that the affacts end cap from inside to outside folded that part of sealing disc of hydraulic pressure, and cancel out each other, realize that end cap and the connector shell place of compressing seal the internal and external pressure balance of disc with the hydraulic pressure of the ecto-entad effect in the slit of end cap and connector shell junction; Avoid the long-term one-sided stressed state of seal disc sheet, thereby reduced the generation of the seal failure problem of sealing disc.Through above structure; Efficiently solve the problem of the stressed easy inefficacy of sealing ring; Increase behind the balancing hole operating position that can observe sealing ring under without the situation of knockout screw simultaneously, in time pinpointed the problems, be convenient to better replacing; Improve the useful life of sealing disc, improved the reliability of the waterproof sealing of connector simultaneously.

Description of drawings

Fig. 1 is the structural representation of embodiment under user mode of water-proof connector of the present invention;

Fig. 2 is the structural representation of the water-proof connector of Fig. 1;

Fig. 3 is the right view of Fig. 2;

Fig. 4 is the vertical view of Fig. 3;

Fig. 5 is the structural representation of the end cap among Fig. 1;

Fig. 6 is the perspective view of the end cap among Fig. 1;

Fig. 7 is the perspective view of the seal disc among Fig. 1;

Fig. 8 is the planar structure sketch map of the seal disc among Fig. 7;

Fig. 9 is the A-A cutaway view of Fig. 8.

Embodiment

Like Fig. 1～shown in Figure 9; Water-proof connector of the present invention; Establish the connector shell 1 of the installation channel that is used to install contact and cable in comprising; Connector shell 1 comprise be used for the grafting end 11 corresponding with intermateable connector, be used for the corresponding inlet wire end 13 of cable and be connected in the grafting end and the inlet wire end between the part 12 of turning round; Said installation channel connects the grafting end successively, turn round part, inlet wire end, and the two ends of said installation channel are provided with corresponding opening respectively on grafting end and inlet wire end.

It is orthogonal L shaped that round part in the present embodiment is divided into the bearing of trend at two ends, and certainly in other embodiments of the invention, the bearing of trend at the part of turning round two ends also can be vertical each other but inclination intersection clip acute angle (or obtuse angle).Be installed with along linearly extended contact 6 through insulator in the installation channel in the said grafting end 11; The afterbody of said contact 6 extends towards the part of turning round; Offer on the outer surface of the said part 12 of turning round communicate with installation channel, over against the window 121 of said contact 6 afterbodys; Window 121 is mainly used in the wiring operation of contact and cable and the embedding after the wiring; Be closed with sealing disc 3 on the window 121, sealing disc 3 edge parts are provided with the flange 31 on the bottom surface, top that is raised in disc of annular spread.Be pressed with end cap 2 on the sealing disc 3; The outer surface of the connector shell 1 around the window 121 is provided with the end cap mating surface corresponding with end cap 2; The end cap mating surface comprises around what window 121 was provided with and is used for cooperating with end cap and compresses the lower seal part that seals disc 3 jointly; Also be provided with the following pressing section that is used for the end cap compression fit in the periphery of its lower sealing surface part on the end cap mating surface; In the present embodiment; The lower seal of said end cap mating surface partly comprises the following installation annular groove 122 that is used to install the flange 31 that seals disc 3, and following installation annular groove 122 is the low chamfering conical surface 123 in middle height edge near the trough wall surface of window 121, and said compressing down partly is the loop corresponding with the appropriate section of end cap.Certainly in other embodiments of the invention; If do not need end cap and connector shell snug fit, also the lower seal part can only be set on the end cap mating surface, and corresponding to difform sealing ring; Lower seal partly is not to have only a kind of flute profile formula, can be plane or cambered surface yet.Middle part, said end cap 2 bottom surfaces is provided with water groove 21 over against window 121 places; Connect between the end face of the groove bottom of water groove 21 and end cap 2 and be provided with five pressure compensation openings 22; Each pressure compensation opening 22 is distributed in the center of end cap 2 and on the circumference at center, each pressure compensation opening 22 is selected less aperture 3mm～4mm, and makes current can directly not be washed into the sealing disc; Certainly in other embodiments of the invention, the number of pressure compensation opening also can be less than or more than 5.On the bottom surface of end cap 2 near the notch mouth of water groove 21 along the place be provided with said connector shell 1 on the corresponding top sealed portion of lower seal part of end cap mating surface; Said top sealed portion is provided with around said water groove 21, also be provided with on the bottom surface of end cap 2 with said connector shell 1 on the last pressing section of following pressing section corresponding matching of end cap mating surface.Described top sealed portion comprise with said connector shell 1 on the last mounting grooves 23 of following mounting groove 122 flange 31 corresponding, that be used to install sealing disc 3, last mounting groove 23 is the low chamfering conical surface 24 in middle height edge near the trough wall surface of water groove 21.The said pressing section of going up is the loop with the respective annular plane compression fit of said connector shell 1.Certainly in other embodiments of the invention; If do not need the snug fit of end cap and connector shell; Top sealed portion can only be set on the end cap bottom surface, and corresponding to difform sealing ring, top sealed portion is not to have only a kind of flute profile formula yet; Also can be plane or cambered surface, and the mouth that top sealed portion also can directly be arranged at the water groove be along last.

The place of keeping to the side of end cap 2 is useful on the connecting hole 25 that is connected with connector shell 1 along circle distribution; End cap end face around each connecting hole 25 is provided with the installation step 26 that is lower than end cap end face middle part; Screw 27 passes connecting hole 25 and penetrates on the connector shell 1 in the corresponding screw hole that is provided with and end cap 2 and connector shell 1 are fixed together, and will seal disc 3 and be pressed between end cap and the connector shell.The corner location of said end cap 2 also is provided with arc notch 28, and arc notch 28 is used to dodge the panel bolts installing hole 14 on the connector shell 1 of corresponding position.

As shown in Figure 1, the embodiment of above-mentioned connector structural representation in use, sealing is realized through sealing ring 7 and panel 8 in the grafting end 11 of connector shell 1, sealing is realized through packing box assembly 4 and cable 5 in the inlet wire end 13 of connector shell 1.Arrow among Fig. 1 is represented the hydraulic pressure direction.Owing to have pressure compensation opening 22 on the end cap 3; Water can get into the water groove 21 from pressure compensation opening 22; End cap 2 and water groove 21 can play the effect of buffering impulsive force; Can only make on the hydraulic pressure that part of sealing disc 3 folded (arrow that groove is interior) from 21 mouthfuls of water grooves along the top sealed portion that affacts end cap from inside to outside; And cancel out each other with the end cap 2 and the hydraulic pressure (arrow that groove is outer) of the ecto-entad effect in the slit of connector shell 1 junction; Realize the internal and external pressure balance of end cap and the connector shell place of compressing sealing disc, avoid the long-term one-sided stressed state of seal disc sheet, thereby reduced the generation of the seal failure problem of sealing disc.Through above structure; Efficiently solve the problem of the stressed easy inefficacy of sealing ring; Increase behind the balancing hole operating position that can observe sealing ring under without the situation of knockout screw simultaneously, in time pinpointed the problems, be convenient to better replacing; Improve the useful life of sealing disc, improved the reliability of the waterproof sealing of connector simultaneously.

The embodiment of above-mentioned water-proof connector is the electric connector that a kind of contact is installed through insulator; Certainly in other embodiments of the invention; Also can be optical connector or photoelectricity mixed loading connector, the form that the installation of its contact will adopt light contact assembly common in the prior art to cooperate with connector shell.

Claims

1. A waterproof connector, including a connector housing with a built-in installation channel, the connector housing includes a plug-in end corresponding to an adapter connector, an incoming wire end corresponding to a cable, and Connected to the turning part between the plug-in end and the incoming line end, the installation channel in the plug-in end is provided with a contact piece whose tail extends toward the turning part, and the outer surface of the turning part is provided with a The installation channel communicates with the window facing the tail of the contact piece, and the connector housing is equipped with an end cover covering the window, which is characterized in that: between the end cover and the connector housing A sealing disc for sealing the window is interposed, and the outer surface of the connector housing is provided with an end cover mating surface corresponding to the end cap around the window, and the end cap mating surface includes a set around the window for connecting with the end cap. The cover cooperates to press the lower sealing part of the sealing disc; the middle part of the bottom surface of the end cover is provided with a water storage groove facing the window, and a pressure balance is provided between the bottom surface of the water storage groove and the top surface of the end cover. The bottom surface of the end cover is close to or directly at the edge of the notch of the water storage groove, and is provided with an upper sealing part corresponding to the lower sealing part on the connector housing and surrounding the water storage groove .

2. The waterproof connector according to claim 1, characterized in that: on the mating surface of the end cap of the connector housing, there is also a lower pressing part for pressing and fitting with the end cap on the periphery of the lower sealing part thereof. part, the bottom surface of the end cover is provided with an upper pressing part corresponding to the pressing part of the lower pressing fit.

3. The waterproof connector according to claim 1, characterized in that: the edge portion of the sealing disk is provided with annularly distributed flanges protruding from the top and bottom surfaces of the disk, and the lower sealing portion includes A lower installation ring groove for installing the flange of the sealing disk, the upper sealing part includes an upper installation ring groove corresponding to the lower installation ring groove for installing the flange of the sealing disk.

4. The waterproof connector according to claim 3, characterized in that: the groove wall surface of the lower installation ring groove close to the window is a chamfered cone surface with a high center and a low edge.

5 . The waterproof connector according to claim 3 , wherein the wall surface of the upper mounting ring groove close to the water storage groove is a chamfered conical surface with a high center and a low edge. 6 .

6. The waterproof connector according to claim 1, characterized in that: connecting holes for fastening with the connector housing are distributed along the circumference near the edge of the end cover, and screws are provided to pass through the connecting holes and The end cover and the connector housing are fixed together by penetrating into corresponding screw holes provided on the connector housing, and the sealing disk is pressed between the end cover and the connector housing.

7. The waterproof connector according to claim 6, characterized in that: the top surface of the end cap around each of the connection holes is provided with an installation step lower than the middle of the top surface of the end cap for fitting the screw.

8. The waterproof connector according to claim 6, characterized in that: the four corners of the end cover are also provided with arc-shaped notches, and the surface of the connector housing corresponding to the positions of the arc-shaped notches is provided with mounting holes for panel bolts .