CN203965665U

CN203965665U - Duplex LC plug

Info

Publication number: CN203965665U
Application number: CN201320858980.XU
Authority: CN
Inventors: 余永强; 李卫可; 郭会永; 姚文浩
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: Avic Optoelectronics Guangdong Co ltd
Priority date: 2013-03-06
Filing date: 2013-12-24
Publication date: 2014-11-26
Anticipated expiration: 2023-12-24

Abstract

The utility model relates to the field of optical connectors, in particular to a duplex LC plug. The plug includes a housing and two plug units. The two plug units are arranged side by side, one left and one right. The top of the housing is provided with pressing claws. The housing includes an upper housing and a lower housing that are fastened together. , the lower housing includes a bottom plate, the front part of the bottom plate has a front wall, and the front wall is provided with a locking window corresponding to the plug unit, and the plug body is interference-fitted in the corresponding locking window and passes through its rear end. The elastic barb structure set at the lower shell is anti-disengagement, and the pressure claw is integrated on the top of the upper shell; when the pressure claw is damaged, the LC plug can be restored to normal operation only by replacing the upper shell, thus realizing The pressure claws can be replaced separately, and the strength of the duplex LC plug can be compared with the duplex LC plug with an integrated shell, which ensures the strength of the plug. The duplex LC plug of the utility model can guarantee the strength of the plug. Simultaneously realize the individual replacement of its pressure jaw.

Description

Duplex LC plug

Technical field

The utility model relates to optical connector field, particularly relates to a kind of duplexing LC plug.

Background technology

Duplex LC plug comprise housing and side by side be assemblied in two plug monomers on housing, two plug monomers are inserted in housing by rear end respectively, and the top of each plug monomer all has the locking bullet pawl for coordinating with adapter, release between plug monomer and corresponding adapter is pressed on the lower its locking to play pawl and is realized, in the time using duplexing LC plug, in order to make two plug monomer synchronizing unlockings, case top is provided with the paw for pressing down the locking a brief period of time, paw is elastic claw, its rear end is positioned on housing, front end overhangs and rides on the locking bullet pawl of two plug monomers to the top periphery of housing gradually, while pressing paw downwards, the locking a brief period of time of two plug monomers is synchronously pressed down.Above-mentioned paw structure has well ensured the synchronism of two plug monomers release, but paw is being arranged on housing of one (as disclosed Double-joint jacket in the publication No. Chinese patent application that is CN102023344A), and paw constantly elasticlys actuate in the process of work, it is to have certain serviceable life, when housing and plug monomer still stand intact often, paw is just fractureed, and once paw fractures, can directly cause scrapping of duplexing LC plug entirety, this has obviously caused great waste.

Publication No. is that the Chinese patent application of CN102365568A discloses a kind of duplexing LC connector, the split-type structural that this connector becomes to be combined into by base and cover plate by housing design, plug monomer is press-fited between the base and cover plate that is fixed on housing, in addition, according to the record of the instructions of this patented claim, its paw is fixed on housing by a clamping cover, although this structure can realize the independent replacing to paw, but but reduce the intensity of duplexing LC connector, specifically, two plug monomers are all to fix by the clamping force between base and gland, in the process using, while pressing down the locking bullet pawl of plug monomer by paw at every turn, plug just forms the structure of a similar crowbar, all power just concentrates on the critical localisation place of base and the gland of housing, critical localisation between base and the gland of housing has just formed the weak part of connector, in use very easily damaged, simultaneously, the assembling of base and gland has also reduced the efficiency of assembling to above-mentioned connector, in addition, the setting of described clamping cover also makes the structure of connector become complicated, has increased the production cost to connector on the one hand, has also reduced on the other hand the efficiency of assembling to connector.

Summary of the invention

The purpose of this utility model is to provide a kind of duplexing LC plug, in ensureing plug intensity, has realized the independent replacing to its paw.

In order to address the above problem, duplexing LC plug of the present utility model is by the following technical solutions: duplexing LC plug, comprise housing and be assemblied in two plug monomers of housing front portion, two plug monomer one the first from left right sides are arranged side by side, the top of described housing is provided with paw, housing comprises the upper shell and the lower house that snap together, lower house comprises base plate, the front portion of base plate has front leg, on front leg, be provided with the locking window corresponding with plug monomer, the interference of plug monomer is assemblied in the elasticity hangnail structure arranging in corresponding locking window and by its rear end place and coordinates with lower house anticreep, paw is wholely set the top at upper shell.

The top of described front leg is provided with the gap radially passing through for optical fiber, and this gap is connected with corresponding locking window.

Each plug monomer is all connected with optical fiber, and described optical fiber collects and passes through a crimping cuff together in the rear end of lower house, and described pressure welding case is pressed between upper and lower casing.

In housing and pressure welding case one cooperation place at the two is provided with gear platform structure, and another is provided with the stopper slot snapping in for described gear platform structure, and pressure welding case coordinates with stopper slot Anti-moving on fore-and-aft direction by described gear platform structure.

Pressure welding case is provided with described gear platform structure, gear platform structure by pressure welding case front end, form to the convex edge of extending to the periphery in week, housing is provided with described stopper slot.

The base plate rear portion of lower house is provided with rear leg and front wall, and front wall is positioned at the front of rear leg and arranges with rear wall interval, and described stopper slot is surrounded by rear leg and the front wall of lower house.

In gear platform structure, have with the bottom land laminating of stopper slot only revolve plane.

One in upper and lower casing is provided with location inserting column, and another is provided with the pilot hole corresponding with described inserting column, and location inserting column interference is inserted in corresponding pilot hole.

Described location inserting column is provided with convex rib structure.

One in upper and lower casing is provided with fixture block, and another is provided with the draw-in groove corresponding with described fixture block.

Because the housing of duplexing LC plug of the present utility model comprises upper shell and lower house, and be provided with the locking window corresponding with plug monomer on the front leg of lower house, plug monomer is that interference is assemblied in the elasticity hangnail structure arranging in corresponding locking window and by its rear end place and coordinates with lower house anticreep, and paw is wholely set the top at upper shell.First, paw is the top being wholely set at upper shell, and on, between lower house, be to adopt the assembling mode fastening, in the time that paw damages, only needing to replace with housing can make LC plug recover normal work, thereby realize the independent replacing to paw, secondly, because plug monomer is to be inserted into before lower house in the locking window on leg, in the time pressing down plug monomer by paw, between the two, all power is all to act on same parts--on lower house, therefore can make the intensity of this duplex LC plug be equal to mutually with the duplexing LC plug that adopts integral housing, ensure the intensity of plug, generally speaking, duplexing LC plug of the present utility model can be realized the independent replacing to its paw in ensureing plug intensity.

Further, described gap can be corresponding optical fiber (afterbody of plug monomer generally has optical fiber) and provides path by locking window, does not need to adopt the mode installing to make optical fiber pass through corresponding locking window again, has facilitated the assembling to plug monomer; Pressure welding case plays the effect of combing and protection optical fiber; Pressure welding case coordinates the effect that can play tension protection on fore-and-aft direction with housing Anti-moving, the part that is positioned at housing of protection optical fiber; The front end of gear platform structure being located to pressure welding case can make it be housed among housing, has avoided its impact that outward appearance of housing is caused; Only revolve plane and can prevent from relatively rotating between pressure welding case and housing, avoid optical fiber to be twisted knotting; Location inserting column and pilot hole can be used for for the assembling centering between upper and lower casing, play the effect of fixing upper and lower casing simultaneously; Convex rib structure has further been consolidated the effect of interference assembling; Fixture block and draw-in groove can be realized the quick assembling between upper and lower casing on the one hand, can under the assembling intensity that makes upper and lower casing meets the prerequisite of daily demand, provide convenience for disassembling of upper and lower casing on the other hand.

Brief description of the drawings

Fig. 1 is the structural representation of a kind of embodiment of duplexing LC plug of the present utility model;

Fig. 2 is the stereographic map of the duplexing LC plug in Fig. 1;

Fig. 3 is the exploded view of the duplexing LC plug in Fig. 1;

Fig. 4 is duplexing LC plug in Fig. 1 exploded view under another visual angle.

Embodiment

A kind of embodiment of duplexing LC plug of the present utility model, as Figure 1-4, comprises housing, two plug monomers 11, dust cap 12, pressure welding case 13 and afterbody sheaths 14.Anterior and the first from left right side that two plug monomers 11 are assemblied in housing is arranged side by side, and the top of each plug monomer 11 is equipped with the locking a brief period of time, and housing is provided with the paw 15 corresponding with the described locking a brief period of time.Its middle shell comprises upper shell 16 and lower house 17, on, lower house snaps together mutually, lower house 17 comprises base plate and is located at the front leg on base plate, rear leg, left leg and right leg, front leg is with left, the top of right leg is respectively equipped with corresponding location inserting column 18, on each location inserting column 18, there is respectively convex rib structure, upper shell 16 is tabular and has the pilot hole corresponding with above-mentioned location inserting column 18 19, on, when lower house fastens, being inserted in corresponding pilot hole of location inserting column 18 interference, thereby play certain fixation, in addition, on the medial surface of upper shell 16, be also provided with fixture block 20, fixture block 20 forms elasticity hangnail structure, lower house 17 is provided with the draw-in groove 21 corresponding with fixture block on upper shell, when upper, when lower house fastens, fixture block 20 snaps in corresponding draw-in groove 21, thereby by upper, lower house is snapped together, the front leg of lower house 17 is provided with and plug monomer locking window 22 one to one, the rear end of plug monomer 11 has an inserting paragraph 112, between the other parts of plug monomer 11 and this inserting paragraph 112, form ledge structure, the top of inserting paragraph 112, bottom is also respectively equipped with elasticity hangnail 113 structures, in assembling process, plug monomer 11 is inserted by force in corresponding locking window and by its corresponding hangnail structure and is coordinated with lower house 17 front and back anticreeps by its inserting paragraph 112, the tail end of each plug monomer 11 is connected with optical fiber 23, the front leg top of lower house 17 is provided with and supplies optical fiber radially to pass through, the gap being connected with corresponding locking window, optical fiber on two plug monomers passes through pressure welding case 13 bandings together after the afterbody of lower house 17 converges, pressure welding case 13 entirety are orthohexagonal tubular structure, the rear leg of lower house 17 is provided with the slot to make way corresponding with pressure welding case 13, the front end of pressure welding case stretches among housing and is pressed in, between lower house, in addition, the front end of pressure welding case 13 is also provided with gear platform structure 131, this gear platform structure 131 is by pressure welding case front end, form to the convex edge of extending to the periphery in week, housing is provided with the stopper slot corresponding with keeping off platform structure, in the present embodiment, on the base plate of lower house 17, be also provided with front wall 24, front wall 24 is positioned at the rear leg front of lower house 17 and arranges with rear leg interval, stopper slot is surrounded by rear leg and the front wall of lower house 17, it is for snapping in to stop pressure welding case 13 with respect to play before and after housing for gear platform structure of pressure welding case 13, simultaneously, in the gear platform structure of pressure welding case 13, be also provided with the bottom land laminating of stopper slot only revolve plane, the rotation of pressure welding case 13 in housing of only having revolved plane limit, the paw 15 of housing is positioned at the top of upper shell 16 and is made as one with upper shell 16, and in an embodiment, due to the variation of the structure of housing, the length of this duplex LC plug has also foreshortened to 40mm, can meet the demand of most of occasions.

In other embodiment of duplexing LC plug, the upper and lower casing described in above-described embodiment can also be fixed by securing members such as screws after fastening; Location inserting column on upper and lower casing and the position of pilot hole can also exchange; Stopper slot can also be directly to open on the base plate of lower house.

Claims

1. Duplex LC plug, including a shell and two plug monomers assembled in the front of the shell, the two plug monomers are arranged side by side, one left and one right, and the top of the shell is provided with a pressure claw, which is characterized in that , the housing includes an upper housing and a lower housing that are fastened together, the lower housing includes a bottom plate, the front part of the bottom plate has a front wall, and the front wall is provided with a locking window corresponding to the plug unit, the plug unit The body is interference-fitted in the corresponding locking window, and the elastic barb structure provided at the rear end is fitted with the lower housing to prevent disengagement, and the pressure claw is integrally arranged on the top of the upper housing.

2. The duplex LC plug according to claim 1, characterized in that, the top of the front wall is provided with a gap for the optical fiber to pass through in the radial direction, and the gap communicates with the corresponding locking window.

3. The duplex LC plug according to claim 1, wherein each plug monomer is connected with an optical fiber, and the optical fiber is collected at the rear end of the lower housing and is connected together by a crimping ferrule, so that The crimping sleeve is compressed between the upper and lower shells.

4. The duplex LC plug according to claim 3, wherein one of the housing and the crimping sleeve is provided with a stopper structure at the joint between the two, and the other is provided with a stopper structure for the said stopper structure. The clamped limit slot, the crimping sleeve cooperates with the limit slot in the front and rear direction through the stopper structure to prevent movement.

5. The duplex LC plug according to claim 4, characterized in that the crimping sleeve is provided with the stopper structure, and the stopper structure is formed by a convex edge at the front end of the crimping sleeve extending to the periphery , The housing is provided with the above-mentioned limiting groove.

6. The duplex LC plug according to claim 5, wherein the rear part of the bottom plate of the lower housing is provided with a rear wall and a front wall, and the front wall is located in front of the rear wall and spaced from the rear wall , the limiting groove is surrounded by the rear wall and the front blocking wall of the lower housing.

7 . The duplex LC plug according to claim 5 , wherein the stopper structure has an anti-rotation plane that fits with the bottom of the limiting groove. 8 .

8. The duplex LC plug according to claim 1, wherein one of the upper and lower housings is provided with a positioning post, and the other is provided with a positioning hole corresponding to the post, and the positioning plug The column interference is inserted in the corresponding positioning hole.

9. The duplex LC plug according to claim 8, characterized in that, the positioning post is provided with a rib structure.

10. The duplex LC plug according to any one of claims 1-9, characterized in that one of the upper and lower housings is provided with a block, and the other is provided with a card corresponding to the block. groove.