CN220040811U - SC optical fiber adapter with elastic dust cover based on IEC standard size - Google Patents

Abstract

The utility model discloses an SC optical fiber adapter with an elastic dust cover based on IEC standard size, which comprises an adapter body and an elastic automatic cover dust cover, wherein the adapter body comprises a main shell, a first shaft sleeve, a second shaft sleeve, a ceramic sleeve and a metal elastic sheet, an opening is arranged on the upper side of the main shell, and a top cover is arranged at the opening. The utility model discloses a port lateral wall of adapter body is equipped with first link, the second link along adapter body axial direction from top to bottom both ends, be equipped with first through-hole that runs through from top to bottom respectively on first link and the second link, the elasticity is automatic to be covered and is closed the shield side and be equipped with the third link, the fourth link, also be equipped with the third through-hole that runs through from top to bottom respectively on third link and the fourth link, the fourth link is equipped with a torsional spring between third link and the fourth link, set up a bolt and insert in proper order and insert first through-hole, the third through-hole, the torsional spring, the fourth through-hole, the second through-hole, realize that elasticity is automatic to be covered and be closed the shield and use the bolt to open and shut as the pivot.

Description

SC optical fiber adapter with elastic dust cover based on IEC standard size

Technical Field

The utility model relates to the technical field of optical fiber connection adapters, in particular to an SC optical fiber adapter with an elastic dust cover based on IEC standard size.

Background

Fiber optic adapters, also known as fiber optic couplers. The optical fiber adapter is a device for detachably (movably) connecting optical fibers, is a unit component commonly used in optical communication signal transmission, and is one of the most important components in a transmission system. The two end faces of the optical fibers are precisely butted, so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the greatest extent, the influence on a system caused by the intervention of the optical fiber on an optical link is minimized, and the optical fibers are connected by an adapter through an opening sleeve in the optical fiber, so that the highest connection performance between the optical fibers is ensured.

The fiber optic adapters commonly used in the market at present include SC-type adapters, LC-type adapters, FC-type adapters, ST-type adapters, MPO adapters, and the like. The SC and LC type adapters are most widely used, and the usage amount is larger, especially the SC type adapters are wider because of earlier development and application. The traditional SC optical fiber adapter dust cap adopts independent split design, when the optical fiber connector is connected or pulled out on site, the independent split dust cap is very easy to lose due to various reasons, so that the port of the optical fiber adapter is exposed outside, and communication light transmitted from the inner end of an optical path system leaks into the site environment, thereby causing light pollution to the site environment. In addition, long bare fiber adapter ports will fall into dust, resulting in increased fiber connection loss, greatly reducing the quality of the fiber connection, and even resulting in connection failure.

There are many SC-type fiber adapters that connect the dust cap with the main housing, however, these designs of products all require a dust cap rotating support seat in the radial direction of the main housing, which results in that the SC fiber adapter occupies a larger space and cannot meet the installation size specified by the IEC standard, thereby greatly limiting the use of the SC fiber adapter product and making it impossible to exchange with the conventional SC fiber adapter. For example: the patent application number is CN202021106803.2 discloses an elastic resetting cover closing mechanism and an optical fiber adapter with the elastic resetting cover closing mechanism, and discloses an SC optical fiber adapter with a side face overturning dustproof cap, which is provided with the dustproof cap, so that the problem that the dustproof cap of the SC optical fiber adapter using the independent dustproof cap is easy to lose is solved, however, the supporting seat of the elastic resetting cover closing mechanism of the optical fiber adapter with the elastic resetting cover closing mechanism is arranged on the side face of the optical fiber adapter, and the overall size of the SC optical fiber adapter is not in accordance with the size specified by the IEC 60874-14-3 standard, so that the SC optical fiber adapter is difficult to replace the conventional SC optical fiber adapter on the market at present.

The utility model discloses a protection type SC interface optical fiber adapter with the patent application number of 202222942564.X, wherein the connecting mechanism of the sealing mechanism is arranged on the top surface or the bottom surface of the SC optical fiber adapter, the connecting mechanism occupies a larger size space, and the whole size of the SC optical fiber adapter also does not accord with the size specified by the IEC 60874-14-3 standard, so that the prior conventional SC optical fiber adapter on the market is difficult to replace.

Disclosure of Invention

In order to overcome the defects of the prior art, the SC optical fiber adapter with the elastic dust cover based on the IEC standard size is provided, a connecting end for connecting the elastic composite cover is arranged at a port of the main shell of the optical fiber adapter in the axial direction, and the connecting structure of the elastic composite cover enables the whole appearance of the adapter to be concise, and the appearance size still accords with the size specified by the IEC 60874-14-3 standard.

The technical scheme adopted by the utility model is as follows: the SC optical fiber adapter with the elastic dust cover based on the IEC standard size comprises an adapter body and the elastic automatic cover dust cover, wherein the elastic automatic cover dust cover is arranged at one port of the adapter body. The adapter body comprises a main shell, a first shaft sleeve, a second shaft sleeve, a ceramic sleeve and a metal elastic sheet which are arranged in the main shell, an opening for assembling accessories is formed in the upper side of the main shell, and a top cover is arranged at the opening in an embedded mode. The adapter body sets up the port lateral wall upper and lower both ends of elasticity automatic cover and closes the shield and be equipped with first link, the second link along adapter body axial direction, be equipped with first through-hole that runs through from top to bottom on first link and the second link respectively, the elasticity automatic cover closes the shield side and is equipped with the third link that corresponds butt joint first link, the fourth link of butt joint second link, also be equipped with the third through-hole that runs through from top to bottom on third link and the fourth link respectively, be equipped with a torsional spring between third link and the fourth link, set up a bolt and insert in proper order and insert first through-hole, the third through-hole, the torsional spring, the fourth through-hole, the second through-hole, realize that elasticity automatic cover closes the shield and open and shut with the bolt, the torsional spring is closing in the port department of adapter body under the non-exogenic action of elasticity automatic cover.

Further, a notch structure is arranged between the first connecting end and the second connecting end of the main shell, an inserting hole site is arranged at the bottom of the notch structure close to the first connecting end, the upper spring leg of the torsion spring is inserted into the inserting hole site, a slot is arranged on the elastic automatic cover dust cover, and the lower spring leg of the torsion spring is arranged in the slot.

Further, a notch is arranged on the other side edge of the main shell opposite to the port notch structure, and the notch is used for conveniently poking the elastic automatic cover dustproof cover which is opened and closed on the port of the adapter body.

Further the first axle sleeve is the same with the second axle sleeve structure, including the axle sleeve base, the sleeve pipe portion that the axle sleeve base middle part perpendicularly extends to outside, sleeve pipe portion both sides parallel arrangement have axle sleeve couple portion, and the left and right sides limit bump portion that is equipped with mutually perpendicular with the side of axle sleeve base.

Preferably, the height of the limit bump part is one half of the side height of the shaft sleeve base, and the limit bump part is respectively distributed on the lower half part of the left side of the shaft sleeve base and the upper half part of the right side of the shaft sleeve base. The first shaft sleeve and the second shaft sleeve are in butt joint with the shaft sleeve base in the back direction, the ceramic sleeve is arranged in the sleeve parts of the first shaft sleeve and the second shaft sleeve, and the limiting convex block parts on the first shaft sleeve and the second shaft sleeve are in butt joint in a staggered manner, so that the first shaft sleeve and the second shaft sleeve are assembled more stably.

Preferably, the main shell is provided with a shaft sleeve limiting groove at the opposite position of the middle parts of the two inner side walls parallel to the axial direction, and the shaft sleeve limiting groove consists of two convex strips which are parallel and inwards convex. The assembled first shaft sleeve, the ceramic sleeve and the second shaft sleeve are inserted into the shaft sleeve limiting grooves at two sides of the first shaft sleeve and the second shaft sleeve, so that stable assembly is realized.

Preferably, the top cover is provided with limiting bayonets at the upper ends of the shaft sleeves at the bottoms of the two side edges parallel to the axial direction of the main shell and corresponding to the limiting lug parts.

Further, a clamping notch is formed in the inner wall of the opening of the main shell, and a clamping convex hook which is correspondingly clamped with the clamping notch is arranged on the outer side wall of the top cover.

Further, two side surfaces of the main shell, which are far away from one end of the elastic automatic cover dust cover, are provided with first sinking bench positions, the upper surface of the top cover is provided with second sinking bench positions connected with the upper sides of the first sinking bench positions, and the first sinking bench positions and the second sinking bench positions form mounting positions for mounting and clamping metal spring plates.

The beneficial effects of the utility model are as follows: through the SC fiber adapter of this technical scheme design takes elasticity to cover and closes shield, and this shield design is connected with one side of the axial direction of the main casing of adapter body, and the first link of main casing, second link setting can not occupy the radial space of adapter, and the whole size of adapter can satisfy the size requirement that IEC 60874-14-3 standard stipulated. The elastic automatic cover dustproof cover can effectively prevent environmental light pollution and dust fall caused by loss of the split dustproof cover, can directly replace the existing standard SC simplex optical fiber connector on the market, and has wide market prospect.

In addition, the first shaft sleeve, the second shaft sleeve and the ceramic sleeve which are arranged in the optical fiber adapter are integrally assembled in the main shell of the adapter, and the shaft sleeve limiting groove is designed through the limiting convex block parts of the first shaft sleeve and the second shaft sleeve, so that the assembly structure is stable, the assembly is simple and quick, and the production is easy.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model.

FIG. 2 is a cross-sectional view of an embodiment of the present utility model.

FIG. 3 is an exploded view of an embodiment of the present utility model.

Fig. 4 is a schematic radial and axial view of an embodiment of the present utility model.

Fig. 5 is a schematic view of the main housing and the top cover according to an embodiment of the present utility model.

Fig. 6 is a schematic structural view of a first sleeve and a second sleeve according to an embodiment of the present utility model.

Fig. 7 is a schematic view of a first sleeve and second sleeve butt-fit.

Fig. 8 is a schematic view of an elastic automatic cover dust cap structure according to the present utility model.

FIG. 9 is a schematic view of a torsion spring according to an embodiment of the present utility model.

FIG. 10 is a schematic illustration of the outline length marking of an embodiment of the present utility model.

FIG. 11 is a schematic illustration of outline width labeling according to an embodiment of the present utility model.

FIG. 12 is a schematic illustration of a highly labeled outline of an embodiment of the present utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that terms such as left, right, up, and down in the embodiments of the present utility model are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1 to 4, an SC optical fiber adapter with an elastic dust cover based on IEC standard size includes an adapter body and an elastic automatic cover dust cover 3, wherein the elastic automatic cover dust cover 3 is disposed at one port of the adapter body. The adapter body comprises a main shell 1, a first shaft sleeve 6, a second shaft sleeve 6', a ceramic sleeve 7 and a metal spring piece 5 which are arranged in the main shell 1, an opening for assembling accessories is formed in the upper side of the main shell 1, and a top cover 2 is arranged at the opening in an embedded mode. The upper end and the lower end of the side wall of the port of the adapter body are provided with a first connecting end 1-1 and a second connecting end 1-2 along the axial direction of the adapter body, the first connecting end 1-1 and the second connecting end 1-2 are respectively provided with a first through hole 1-3 and a second through hole 1-4 which penetrate through up and down, the side edge of the elastic automatic cover dustproof cover 3 is provided with a third connecting end 3-1 which is correspondingly connected with the first connecting end 1-1 and a fourth connecting end 3-2 which is correspondingly connected with the second connecting end 1-2, the third connecting end 3-1 and the fourth connecting end 3-2 are respectively provided with a third through hole 3-3 and a fourth through hole 3-4 which penetrate through up and down, a torsional spring 4 is arranged between the third connecting end 3-1 and the fourth connecting end 3-2, a bolt 8 is arranged to be sequentially inserted into the first through hole 1-3, the third through hole 3-3, the torsional spring 4, the fourth through hole 3-4 and the second through hole 1-4, so that the elastic automatic cover 3 is opened and closed by 8 as a rotating shaft of the elastic automatic cover 3 is opened and closed under the action of the elastic automatic cover 3 and the elastic automatic cover 4 is used as a rotating shaft.

Referring to fig. 4 and 5, a notch structure is arranged between a first connection end 1-1 and a second connection end 1-2 of a main housing 1, a plugging hole site 1-5 is arranged at the bottom of the notch structure adjacent to the first connection end 1-1, an upper spring leg 4-1 of a torsion spring 4 is plugged into the plugging hole site 1-5, a slot 3-5 is arranged on an elastic automatic cover dust cover 3, and a lower spring leg 4-2 of the torsion spring 4 is arranged in the slot 3-5.

Preferably, the other side of the main housing 1 opposite to the port recess structure is provided with a notch position 1-9, and the notch position 1-9 is used for conveniently poking the elastic automatic cover dust cover 3 which is opened and closed on the port of the adapter body.

Referring to fig. 6 and 7, the first shaft sleeve 6 and the second shaft sleeve 6' have the same structure, and include a shaft sleeve base 6-1, a sleeve part 6-2 extending outwards perpendicularly in the middle of the shaft sleeve base 6-1, shaft sleeve hook parts 6-3 arranged in parallel on two sides of the sleeve part 6-2, and limit bump parts 6-4 perpendicular to the sides on the left and right sides of the shaft sleeve base 6-1.

Preferably, the height of the limit bump portion 6-4 is half of the side height of the sleeve base 6-1, and the limit bump portion 6-4 is distributed on the lower half portion of the left side of the sleeve base 6-1 and the upper half portion of the right side of the sleeve base 6-1. The sleeve bases 6-1 of the first sleeve 6 and the second sleeve 6 'are contact surfaces and are assembled in opposite butt joint, as shown in fig. 7, the limiting protruding block parts 6-4 on the outer sides of the first sleeve 6 and the second sleeve 6' form the butt joint in a staggered manner, which is more beneficial to the stability of assembly.

Referring to fig. 2 and 5, a sleeve limiting groove 1-6 is formed in the opposite position of the middle parts of two inner side walls of the main shell 1, which are parallel in the axial direction, the sleeve limiting groove 1-6 is formed by two convex strips which are parallel inwards, and the sleeve limiting groove 1-6 is used for being inserted into a limiting convex block part 6-4.

Preferably, the top cover 2 is provided with limiting bayonets 2-2 at the upper end of the shaft sleeve corresponding to the positions of the limiting convex block parts 6-4 along the bottoms of the two parallel side edges of the axial direction of the main shell 1.

Preferably, as a connecting structure scheme of the top cover 2 and the main shell 1, a clamping type connection is adopted, a clamping notch 1-7 is formed in the inner wall of the opening of the main shell 1, and a clamping convex hook 2-1 which is correspondingly clamped with the clamping notch 1-7 is arranged on the outer side wall of the top cover 2.

Preferably, as the scheme that the metal elastic sheet 5 is fixedly connected to the main shell 1, two side surfaces of the main shell 1, which are far away from one end of the connecting elastic automatic cover dust cover 3, are provided with first sinking bench positions 1-8, the upper surface of the top cover 2 is provided with second sinking bench positions 2-3 connected with the upper sides of the first sinking bench positions 1-8, and the first sinking bench positions 1-8 and the second sinking bench positions 2-3 form mounting positions for mounting and clamping the metal elastic sheet 5.

When the elastic automatic cover dust cover 3 is installed, the third through hole 3-3 and the fourth through hole 3-4 of the bolt 8 installation hole of the elastic automatic cover dust cover 3 are aligned with the first through hole 1-3 and the second through hole 1-4 on the main shell 1, the upper spring leg 4-1 of the torsion spring 4 is inserted into the well-arranged inserting hole site 1-5 on the main shell 1, the lower spring leg 4-2 of the torsion spring 4 falls into the groove position 3-2 of the elastic automatic cover dust cover 3, the central hole of the torsion spring 4 is aligned with the first through hole 1-3 and the second through hole 1-4 of the bolt 8 installation hole of the main shell 1, the bolt 8 is inserted, and the elastic automatic cover dust cover 3 is installed.

Under the condition that the torsion spring 4 is not subjected to external force, the lower spring leg 4-2 is an application part of spring force, and can naturally press the elastic automatic cover dust cover 3 under the action of the spring force of the spring, so that the elastic automatic cover dust cover 3 is in a normally closed state, and when the optical fiber connection is needed to be spliced, the elastic automatic cover dust cover 3 is manually and lightly stirred at the notch position 1-9 at the outer end of the SC optical fiber adapter, and the elastic automatic cover dust cover 3 can be opened.

The assembly method of the internal parts of the SC optical fiber adapter comprises the steps of firstly, putting a ceramic sleeve 7 into sleeve parts 6-2 of a first sleeve 6 and a second sleeve 6 'which are in butt joint mutually, then, putting the whole body into the inner cavity space of a main shell 1 of the SC optical fiber adapter, inserting a limit bump part 6-4 formed by the first sleeve 6 and the second sleeve 6' into a limit groove 1-6 of the inner sleeve of the main shell 1, putting the inside into a top cover 2, embedding the top cover 2 into an opening at the upper end of the main shell 1, clamping and fixing the top cover 2 and the main shell 1, finally, putting a metal spring plate 5 into a second sinking position 2-3 of the top cover 2, and putting clamping feet of the metal spring plate 5 into first sinking positions 1-8 of the main shell 1, thus completing the assembly of the SC optical fiber adapter.

Referring to fig. 10 to 12, the length dimension is 27.6mm, the width dimension is 12.8mm, the height dimension is 9.3mm, the product dimension meets the specification of IEC 60874-14-3 (detailed specification of SC type single-link optical fiber adapter for single-mode optical fiber), namely the single-link SC optical fiber adapter has the length dimension of 27.0 mm-27.8 mm, the width dimension of 12.6 mm-13.0 mm and the height dimension of 9.2 mm-9.4 mm, and the technical scheme discloses the SC optical fiber adapter based on IEC standard, accords with the IEC standard dimension, has the elastic automatic cover dust cover 3, can effectively prevent environmental light pollution and dust fall caused by loss of the split type dust cover, can directly replace the existing standard SC single-mode optical fiber connector on the market, and has wide market prospect.

It should be noted that, the main housing 1 may also be a split type A, B housing, and A, B housings are assembled together by welding using an ultrasonic welding technique.

The foregoing has shown and described the basic principles, main features and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (9)

1. SC fiber adapter of taking elasticity shield based on IEC standard dimension, including adapter body and elasticity automatic cover close shield (3), elasticity automatic cover closes shield (3) and locates one of them port department of adapter body, its characterized in that: the adapter body comprises a main shell (1), a first shaft sleeve (6), a second shaft sleeve (6'), a ceramic sleeve (7) and a metal spring piece (5) which are arranged in the main shell (1), wherein an opening for assembling accessories is formed in the upper side of the main shell (1), and a top cover (2) is arranged at the opening in an embedded mode; the upper end and the lower end of the port side wall of the adapter body are provided with a first connecting end (1-1) and a second connecting end (1-2) along the axial direction of the adapter body, the first connecting end (1-1) and the second connecting end (1-2) are respectively provided with a first through hole (1-3) and a second through hole (1-4) which penetrate up and down, the side edge of the elastic automatic cover dustproof cover (3) is provided with a third connecting end (3-1) which is correspondingly butted with the first connecting end (1-1), a fourth connecting end (3-2) which is butted with the second connecting end (1-2), the third connecting end (3-1) and the fourth connecting end (3-2) are respectively provided with a third through hole (3-3) and a fourth through hole (3-4) which penetrate up and down, a torsion spring (4) is arranged between the third connecting end (3-1) and the fourth connecting end (3-2), a bolt (8) is arranged to be sequentially inserted into the first through hole (1-3), the third through hole (3-3), the torsion spring (4), the fourth through hole (3-4) and the fourth through hole (3-4) are butted with the fourth connecting end (3-2), the third connecting end (3-2) and the fourth connecting end (3-4) which is respectively provided with the fourth through hole (3-4) and the fourth connecting end (3-2) which is respectively provided with the fourth connecting hole (3 4) respectively, the torsion spring (4) is elastically and automatically covered on the port of the adapter body under the action of the non-external force of the elastic automatic covering dust cover (3).

2. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 1, wherein: the position between the first connecting end (1-1) and the second connecting end (1-2) of the main shell (1) is set to be a notch structure, an inserting hole site (1-5) is arranged at the bottom of the notch structure close to the position of the first connecting end (1-1), an upper spring foot (4-1) of the torsion spring (4) is inserted into the inserting hole site (1-5), a slot (3-5) is arranged on the elastic automatic cover dust cover (3), and a lower spring foot (4-2) of the torsion spring (4) is arranged in the slot (3-5).

3. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 2, wherein: the other side edge of the main shell (1) opposite to the port notch structure is provided with a notch position (1-9), and the notch position (1-9) is used for poking an elastic automatic cover-closing dustproof cover (3) which is opened and closed on the port of the adapter body.

4. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 1, wherein: the first shaft sleeve (6) and the second shaft sleeve (6') are identical in structure and comprise a shaft sleeve base (6-1), a sleeve part (6-2) extending outwards perpendicularly in the middle of the shaft sleeve base (6-1), shaft sleeve hook parts (6-3) are arranged on two sides of the sleeve part (6-2) in parallel, and limit protruding block parts (6-4) perpendicular to the side edges are arranged on the left side and the right side of the shaft sleeve base (6-1).

5. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 4, wherein: the height of the limit lug parts (6-4) is one half of the side edge height of the shaft sleeve base (6-1), and the limit lug parts (6-4) are respectively distributed on the lower half part of the left side edge of the shaft sleeve base (6-1) and the upper half part of the right side edge of the shaft sleeve base (6-1).

6. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 5, wherein: the main shell (1) is provided with shaft sleeve limiting grooves (1-6) along the opposite positions of the middle parts of the two inner side walls parallel to the axial direction, the shaft sleeve limiting grooves (1-6) are formed by two convex strips which are parallel to each other and inwards convex, and the shaft sleeve limiting grooves (1-6) are used for being inserted into limiting convex block parts (6-4).

7. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 6, wherein: the top cover (2) is provided with a shaft sleeve upper end limiting bayonet (2-2) at the bottom of two side edges parallel to the axial direction of the main shell (1) and corresponding to the limiting lug part (6-4).

8. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 1, wherein: the inner wall of the opening of the main shell (1) is provided with a clamping notch (1-7), and the outer side wall of the top cover (2) is provided with a clamping convex hook (2-1) which is correspondingly clamped with the clamping notch (1-7).

9. The IEC standard sized SC fiber optic adapter with resilient dust cover of claim 1, wherein: the two side surfaces of the main shell (1) far away from one end of the connecting elastic automatic cover dustproof cover (3) are provided with first sinking table positions (1-8), the upper surface of the top cover (2) is provided with second sinking table positions (2-3) connected with the upper sides of the first sinking table positions (1-8), and the first sinking table positions (1-8) and the second sinking table positions (2-3) form mounting positions for mounting and clamping metal elastic sheets (5).