CN111142194A - Optical fiber connector with contact piece free of tool removal and connector assembly - Google Patents

Abstract

The invention relates to a tool-free optical fiber connector with a contact element, which comprises a shell and a contact element assembled in a contact element hole in the shell, wherein a tail handle of the contact element realizes circumferential rotation stopping through the matching of a large convex key on the peripheral surface of the tail handle and a large key groove in the contact element hole; one end of the spring is movably sleeved on the tail part of the tail handle and is blocked on the flange plate of the tail handle, the other end of the spring is fixedly connected with the front end of the supporting piece, and the tail handle and the supporting sleeve are arranged at intervals through the elasticity of the spring; at least two clamping nails which are rotationally locked with the fixing parts in the contact element holes are uniformly distributed on the peripheral surface of the support element; the fixing part comprises a clamping groove and a front end limiting part, wherein the clamping groove is formed in the upper part of one side, which is in limiting fit with the staple, of the fixing part, the clamping groove is provided with an opening for the staple to enter, the front end limiting part is used for axially blocking and limiting the supporting part to prevent the supporting part from continuously moving forwards and separating from the fixing part, so that when the staple is blocked by the front end limiting part, the supporting part is rotated to enable the staple to enter the clip groove from the opening and fall into the bottom of the front end of the fixing.

Description

Optical fiber connector with contact piece free of tool removal and connector assembly

Technical Field

The invention belongs to the technical field of optical fiber connectors, and particularly relates to an optical fiber connector with a contact member free of tool removal and a connector assembly.

Background

In the existing optical fiber connector, contact pieces are mostly in an end face contact type, and the product has two characteristics, namely, the end face of the contact piece at one end of a jack is embedded into the connector, and a special tool is needed for cleaning in the using process; secondly, the contact needs to be taken and assembled by a special tool. The two characteristics make the contact element of the existing optical fiber connector inconvenient for installation and maintenance in the use field.

Disclosure of Invention

In order to solve the problems, the invention provides an optical fiber connector and a connector assembly with a novel structure, wherein the contact element can be taken out and replaced without tools, the contact element can be directly taken out and replaced manually, and a ceramic sleeve is arranged at the butt joint position, so that the stable transmission of optical signals is realized.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The optical fiber connector with the contact member free of tool removal comprises a connector shell and the contact member assembled in a contact member hole in the shell, wherein the contact member comprises a ceramic contact pin and a tail handle, and the tail handle realizes circumferential rotation stopping through the matching of a large convex key on the outer peripheral surface of the tail handle and a large key groove in the contact member hole; one end of the spring is movably sleeved on the tail part of the tail handle and is blocked on the flange plate of the tail handle, the other end of the spring is fixedly connected with the front end of the supporting piece, and the tail handle and the supporting sleeve are arranged at intervals through the elasticity of the spring; at least two clamping nails which are rotationally locked with the fixing parts in the contact element holes are uniformly distributed on the peripheral surface of the support element; the fixing part comprises a clamping groove which is provided with an opening for the staple bolt to enter and provided with a U-shaped locking groove bottom and a limiting part which is used for axially stopping the support part to limit the support part and preventing the support part from continuously moving forwards to enable the staple bolt to be separated from the fixing part, so that when the support part is stopped by the limiting part, the support part is rotated to enable the staple bolt to enter the clamping groove from the opening and fall into the groove bottom under the action of a spring to realize locking.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

The fixing part is a positioning spring, and the clip groove on the positioning spring is communicated with the abdicating groove with the open rear end and the closed front end through the opening on one side of the positioning spring, so that the clip enters the positioning spring from the rear end of the abdicating groove and rotates into the clip groove from the opening of the clip groove to realize the limit; the wall body of the positioning spring is also provided with a through groove for the large convex key on the tail handle to pass through.

According to the optical fiber connector with the contact member free of tool removal, the front end of the positioning spring is provided with a convex key which is in limit fit with the small key groove in the contact member hole to realize circumferential rotation stopping.

The optical fiber connector with the contact member removed without using a tool is characterized in that the contact member opening is provided with a step surface for preventing the positioning spring from falling out of the connector.

The optical fiber connector with the contact member being removed without using a tool is characterized in that the front end of the support member is sleeved with a sheath which is circumferentially prevented from rotating, and the part of the sheath extending out of the connector housing is also provided with an identification key which is positioned on the same axial direction with one of the staples and is used for judging the position of the staple.

In the optical fiber connector with the contact member removed without using a tool, the supporting member realizes the sealing inside the connector shell by matching the sealing ring assembled in the sealing ring groove of the supporting member with the tail part of the contact member hole.

In the optical fiber connector with the contact member being taken off without a tool, the front end of the connector housing is provided with an alignment inclined surface for aligning the plug.

The purpose of the invention and the technical problem to be solved can also be realized by adopting the following technical scheme. The optical fiber connector assembly with the contact member free of tool removal comprises the connector and the adaptive connector thereof, wherein the front end of the connector shell is also provided with a cavity for mounting a sleeve packaging shell for packaging a ceramic sleeve, and the contact member of the adaptive connector and the assembly mode of the contact member are the same as the connector.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

The connector and the adaptive connector are rectangular connectors, and when the connector and the adaptive connector are inserted, the insertion guide and the locking of the at least two locking pin assemblies and the jack locking assembly are realized through at least two guide pin assemblies and guide hole assemblies on a square disc panel outside a shell of the connector and the guide hole assemblies.

In the optical fiber connector assembly with the contact member free of tool removal, the ceramic bushing is limited by the inner convex edge at the front end of the ceramic bushing mounting hole, and the bushing packaging shell is fixedly connected with the connector shell through the countersunk head screw.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the invention can achieve considerable technical progress and practicability, has wide industrial utilization value and at least has the following advantages: the contact piece can be taken out and disassembled without tools; the contact piece positioning structure is simple, and the ceramic sleeve is aligned, so that the optical signal transmission stability is good; the spring is positioned by designing the bayonet structure, so that the processing difficulty is reduced, and the processing efficiency of parts is improved; the end face of the contact piece is exposed, so that the end face is convenient to clean.

Drawings

FIG. 1 is a schematic diagram of a plug end configuration of a connector assembly according to an embodiment of the present invention with tool-less removal of contacts;

FIG. 2 is a schematic view of a plug housing of a tool-less contact removal fiber optic connector assembly in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view in partial cutaway of FIG. 2;

FIG. 4 is a schematic view of a plug end ceramic ferrule package housing of a tool-less contact removal fiber optic connector assembly of the present invention;

FIG. 5 is a cross-sectional view of the ceramic tube of FIG. 4 at the mounting hole;

FIG. 6 is a cross-sectional view of the screw hole of FIG. 4;

FIG. 7 is a schematic view of a contact structure of a tool-less fiber optic connector assembly of the present invention;

FIG. 8 is a schematic view of a positioning spring structure of a connector assembly with tool-less removal of the contact member of the present invention;

FIG. 9 is a schematic view of a plug end contact mounting condition of a connector assembly of the present invention with the contacts removed without tools;

FIG. 10 is a second view of a plug end contact mounting state of a connector assembly of the present invention with the contacts removed without tools;

FIG. 11 is a schematic view of a plug end contact of a tool-less contact removal fiber optic connector assembly in accordance with an embodiment of the present invention in place;

FIG. 12 is a schematic view of a receptacle end of a connector assembly with tool-less removal of contacts according to an embodiment of the present invention;

FIG. 13 is a schematic view of a receptacle housing of a tool-less fiber optic connector assembly having contacts according to an embodiment of the present invention;

FIG. 14 is a perspective view of a tool-less removal contact optical fiber connector assembly according to an embodiment of the present invention.

[ description of main element symbols ]

1: casing tube packaging shell

1.1: ceramic bushing mounting hole

1.2: screw hole

1.3: convex edge

2: ceramic bushing

3: guide hole assembly

4: locking pin assembly

5: plug shell

5.1: locking pin assembly hole

5.2: guide pin hole

5.3: threaded hole

5.4: plug alignment inclined plane

5.5: step surface

5.6: big key groove

5.7: small key groove

6: contact element

6.1: ceramic contact pin

6.2: tail handle

6.2.1: big key

6.3: spring

6.4: support piece

6.4.1: staple bolt

6.4.2: sealing ring groove

6.4.3: groove

6.5: sealing ring

6.6: protective sleeve

6.6.1: convex part

6.6.2: identification key

7: positioning spring

7.1: return groove

7.2: convex key

7.3: through groove

8: plug shell

8.1: guide pin hole

8.2: locking jack assembly hole

8.3: socket alignment inclined plane

9: guide pin assembly

10: locking jack assembly

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the optical fiber connector assembly with tool-less contact removal according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 1-14, which are schematic structural diagrams of various parts of the optical fiber connector assembly with tool-less removal of the contact according to the present invention, the connector assembly includes a plug and a socket, wherein the plug includes a plug housing 5, a cavity for mounting the ferrule package housing 1 is disposed at the front end of the plug housing 5, and a threaded hole 5.3 for fixing the ferrule package housing 1 on the plug housing 5 is disposed at the bottom of the cavity. The sleeve packaging shell 1 is used for packaging the ceramic sleeve 2, and the plug and the socket are aligned through the ceramic sleeve 2 packaged in the sleeve packaging shell 1 when the plug and the socket are plugged, so that stable transmission of optical signals is achieved. The front end face of the sleeve packaging shell 1 is basically flush with the front end face of the plug shell 5 or has a slight gap, so that the front end face of the contact is basically flush with the front end face of the plug shell 5 when the plug is in a free state, and the end faces of the contact can be cleaned without using a special cleaning tool. A plurality of contact holes which are used for assembling the contact element 6 and are correspondingly communicated with the ceramic bushing mounting holes 1.1 in the bushing packaging shell 1 respectively are also arranged in the plug shell 5, so that the ceramic contact pin 6.1 at the front end of the contact element 6 can be inserted into the ceramic bushing 2 in the ceramic bushing mounting hole 1.1.

In the embodiment of the present invention, the ceramic bushing 2 is limited by the inner flange 1.3 at the front end of the ceramic bushing mounting hole 1.1, but the present invention is not limited thereto. The sleeve packaging shell 1 is further provided with a screw hole 1.2 for installing a screw, and the sleeve packaging shell and the plug shell are fixed through the cooperation of the screw penetrating through the screw hole and a threaded hole 5.3 in the plug shell. Preferably, the screw hole is step-shaped, so that the screw head can be sunk into the casing of the sleeve to prevent the interference between the screw head and the end face of the connector.

The contact piece 6 comprises a ceramic pin 6.1, a tail handle 6.2, a spring 6.3, a support piece 6.4, a sealing ring 6.5 and a sheath 6.6. Wherein the ceramic pin 6.1 and the tail handle 6.2 are fixed together by means of crimping. The outer peripheral surface of the tail handle 6.2 is provided with a large convex key 6.2.1 which is matched with a large key groove 5.6 in the contact hole to realize circumferential rotation stopping, and the arrangement of the large convex key and the key groove can prevent the contact from rotating in the working process to influence the product performance.

One end of the spring 6.3 is movably sleeved on the tail handle 6.2 and is stopped on the rear end face of the flange plate on the tail handle 6.2, the other end of the spring is fixedly connected with the front end of the supporting piece 6.4, and the tail handle 6.2 and the supporting piece 6.4 are arranged at intervals through the elastic force provided by the spring 6.3 and used for enabling the tail handle and the supporting piece to be far away from each other.

At least two staple bolts 6.4.1 are evenly distributed on the peripheral surface of the support piece 6.4, and fixing parts which are matched with the staple bolts 6.4.1 on the support piece 6.4 in a rotating locking or unlocking mode are arranged in the contact piece mounting holes in the plug shell. The fixing part comprises a clamping groove which is provided with an opening for the staple bolt to enter and is provided with a U-shaped groove bottom for locking the staple bolt at the front end of one side in spacing fit with each staple bolt 6.4.1, and a spacing part which is used for axially stopping and spacing the support part to prevent the staple bolt from continuously moving forward to enable the staple bolt to be separated from the fixing part, when the contact element is assembled, the contact element is pushed in from the rear end of a mounting opening of the contact element, when the support part and the spacing part of the fixing part are stopped and spacing, the contact element is axially mounted in place, then the support part at the rear end of the contact element is rotated to enable the staple bolt to.

In the embodiment of the present invention, the fixing portion is a positioning spring 7, and the clip groove 7.1 of the positioning spring 7 is communicated with the abdicating groove with an open rear end and a closed front end through an opening on one side thereof, so that the clip enters the positioning spring from the rear end of the abdicating groove and rotates into the clip groove from the opening of the clip groove 7.1 to achieve the limiting. In the embodiment of the invention, a through groove 7.3 for the large convex key 6.2.1 on the tail handle 6.2 to pass through is formed on one side wall body of the positioning spring 7. Preferably, the large convex key and one of the staples are on the same plane, that is, the through groove 7.3 has the function of allowing the staple on the same plane as the large convex key to enter the positioning spring and enter the clip groove from an opening on one side of the clip groove 7.1 after rotating.

In the embodiment of the invention, the front end of the positioning spring 7 is provided with a convex key 7.2 which is in limit fit with the small key groove 5.7 in the contact element hole, the positioning spring 7 realizes circumferential rotation stopping through the fit of the convex key 7.2 and the small key groove in the contact element hole, and the positioning spring 7 is prevented from rotating when a connector works, so that the contact element 6 cannot be normally taken out and taken out.

In an embodiment of the invention, the contact opening is provided with a step surface 5.5 for preventing the positioning spring from falling out of the connector.

The front end of the supporting piece 6.4 is sleeved with a sheath 6.6, and the sheath 6.6 and the supporting piece 6.4 are circumferentially prevented from rotating. In the embodiment of the invention, the jacket 6.6 realizes the circumferential rotation stopping of the groove 6.4.3 on the outer peripheral surface of the tail part of the jacket 6.6 and the convex part at the front end of the jacket 6.6.

The part of the sheath 6.6 extending out of the plug housing is also provided with an identification key 6.6.2 which is in the same axial direction with one of the staples and is used for judging the position of the staple. When the contact piece is assembled, the rotation of the staple can be realized by rotating the sheath 6.6, and whether the staple rotates in place or not can be judged by observing the position of the identification key 6.6.2. In the embodiment of the invention, the sheath 6.6 is a rubber piece, is sleeved on the supporting piece 6.4 in an extruding mode, and ensures that the direction of the large key 6.6.2 is consistent with that of the staple 6.4.1 at any moment after the connection through the matching of the convex part 6.6.1 at the front end and the groove 6.4.3 at the tail part of the supporting piece 6.4.

In the embodiment of the invention, the supporting piece 6.4 is provided with a sealing ring groove 6.4.2, and the sealing ring 6.5 is assembled in the sealing ring groove and is matched with the tail part of the contact element hole of the plug shell 5 to realize the internal sealing of the shell.

In the embodiment of the invention, the number of the clamp nails is two, when the contact element is installed, the spring 6.3 is compressed by pushing the sheath 6.6, the whole contact element moves towards the hole of the contact element, when the contact element is pushed to the limit position, the clamp nail 6.4.1 is just positioned at the opening of the return groove 7.1, the contact element 6 is loosened after rotating counterclockwise by 90 degrees, the clamp nail 6.4.1 falls into the return groove 7.1, the positioning of the contact element is realized, and whether the insertion in place or the rotation in place can be confirmed by observing the direction of the large key 6.6.2 and the position of the sealing ring.

The front end of the plug shell is provided with a plug alignment inclined plane 5.4 which is used for alignment when the connector is plugged, so that the error phenomenon is prevented.

The socket includes a socket housing 8 and contacts 6 mounted within the socket housing 8, the contacts 6 being configured to conform to the plug end contacts. The contact 6 is limited and unlocked by the rotational fit of the staple on the periphery of the support piece of the contact and the fixing piece of the clip groove with one side opened in the contact hole in the socket shell. In the embodiment of the present invention, the fixing member is the positioning spring 7, but is not limited thereto.

In the embodiment of the invention, the connector assembly is a rectangular optical fiber connector assembly, the plug and the socket are locked by the locking assembly on the square plate panel after being plugged, and the square plate panel is also provided with a guide structure. Specifically, at least two locking pin assembly holes 5.1 and at least two guide pin holes 5.2 are arranged on the square plate panel outside the plug housing 5 and are respectively used for installing the locking pin assemblies 4 and the guide hole assemblies 3. The guide hole assembly 3 and the locking pin assembly 4 are fixed on the plug shell 5 in a nut fastening mode. The socket housing 8 is provided with two guide pin holes 8.1 and locking jack component holes 8.2 for mounting the guide pin component 9 and the locking jack component 10. When the plug and the socket are plugged, the plug and the socket of the connector are aligned during plugging through the matching of the guide pin component 9 and the guide hole component 3; the locking socket assembly 10 is matched with the locking pin assembly 4 for use, and is used for locking the inserted connector plug and the inserted connector socket.

The socket shell front end still is equipped with the socket alignment inclined plane 8.3 that corresponds with plug alignment inclined plane 5.4 for the plug and socket terminal surface discernment when inserting, plays the effect of preventing inserting by mistake.

In the embodiment of the invention, the plug and the socket of the connector assembly are oppositely inserted through the steps of shell identification, guide pin guiding, inserting in place and screw locking, in the inserting and combining process, the contact pieces 6 of the plug and the socket respectively extrude the springs 6.3 on the contact pieces at two ends to retreat under the action of opposite insertion force and align in the ceramic sleeve 2 positioned in the plug end, so that the stable transmission of optical signals is realized.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A tool-less contact removal fiber optic connector comprising a connector housing and a contact mounted in a contact hole in the housing, characterized in that: the contact element comprises a ceramic contact pin and a tail handle, and the tail handle realizes circumferential rotation stopping through the matching of a large convex key on the outer peripheral surface of the tail handle and a large key groove in a contact element hole;

one end of the spring is movably sleeved on the tail part of the tail handle and is blocked on the flange plate of the tail handle, the other end of the spring is fixedly connected with the front end of the supporting piece, and the tail handle and the supporting sleeve are arranged at intervals through the elasticity of the spring;

at least two clamping nails which are rotationally locked with the fixing parts in the contact element holes are uniformly distributed on the peripheral surface of the support element;

the fixing part comprises a clamping groove which is provided with an opening for the staple bolt to enter and provided with a U-shaped groove bottom for locking the staple bolt, and a limiting part which axially stops the support part to limit the support part and prevent the support part from continuously moving forwards to enable the staple bolt to be separated from the fixing part, wherein the front end of one side of the fixing part in limiting fit with the staple bolt, and when the support part is stopped by the limiting part, the support part is rotated to enable the staple bolt to enter the clamping groove from the opening and fall into the groove bottom under the action of.

2. A tool-less contact removal fiber optic connector as claimed in claim 1, wherein: when the staple enters the positioning spring from the rear end of the abdicating groove and at least one staple is stopped at the front end surface of the abdicating groove, the support piece is rotated to enable the staple to rotate from the opening at the front end of the clip groove to enter the clip groove to realize locking; the wall body of the positioning spring is also provided with a through groove for the large convex key on the tail handle to pass through.

3. A tool-less contact removal fiber optic connector as claimed in claim 2, wherein: the front end of the positioning spring is provided with a convex key which is in limit fit with a small key groove in the contact hole to realize circumferential rotation stopping.

4. A tool-less contact removal fiber optic connector as claimed in claim 2, wherein: wherein the contact opening is provided with a step surface for preventing the positioning spring from falling out of the connector.

5. A tool-less contact removal fiber optic connector as claimed in claim 1, wherein: the front end of the supporting piece is sleeved with a sheath which is circumferentially prevented from rotating, and the part of the sheath extending out of the connector shell is also provided with an identification key which is positioned on the same plane with one of the staples and is used for judging the position of the staple.

6. A tool-less contact removal fiber optic connector as claimed in claim 1, wherein: the supporting piece is matched with the tail part of the contact hole through a sealing ring assembled in a sealing ring groove of the supporting piece to realize sealing in the connector shell.

7. A tool-less contact removal fiber optic connector as claimed in claim 1, wherein: wherein the front end of the connector shell is provided with an alignment inclined plane for aligning the plug.

8. The utility model provides a contact exempts from fiber connector subassembly that instrument was shirked which characterized in that: a connector and a mating connector therefor comprising a connector according to any one of claims 1 to 7, wherein the front end of the connector housing is further provided with a cavity for receiving a ferrule package housing enclosing a ceramic ferrule with a front face substantially flush with the front face of the connector housing, and wherein the mating connector contacts and the mating contacts are assembled in the same manner as the connector.

9. A tool-less contact removal fiber optic connector assembly of claim 8, wherein: the connector and the adaptive connector are rectangular connectors, and when the connector and the adaptive connector are inserted, the connector and the adaptive connector are inserted and guided through at least two guide pin assemblies and guide hole assemblies on a square plate panel outside a shell of the connector and the guide hole assemblies and at least two locking pin assemblies and jack locking assemblies to realize locking.

10. A tool-less contact removal fiber optic connector assembly as claimed in claim 9, wherein: the ceramic bushing is limited by an inner convex edge at the front end of the ceramic bushing mounting hole, and the bushing packaging shell is fixedly connected with the connector shell through a countersunk screw.

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