CN218767427U - Miniaturized inner core structure for pre-forming end of optical fiber and combination kit thereof - Google Patents

Abstract

The utility model discloses a miniaturized inner core structure for pre-finishing optical fiber, which comprises an inserting core, a connecting nut and an inner core main body; the insert core is arranged at the first connecting end of the inner core main body; the outer part of the inner core main body is sleeved with a connecting nut, the outer part of the inner core main body is also provided with a step, and the connecting nut is arranged at the step; the external thread of the connecting nut is matched with the internal thread of different external members so as to be detachably connected with different external members. The utility model also discloses a combination external member that corresponds. The inner core structure of the utility model can be connected with a certain adapter, used as a miniaturized connector, and can be assembled with different external members, and is compatible with optical fiber adapters of different types; the pipe-penetrating device can also be assembled with a traction cap for pipe-penetrating construction.

Description

Miniaturized inner core structure for pre-forming end of optical fiber and combination kit thereof

Technical Field

The utility model belongs to the technical field of the fiber connection, concretely relates to a miniaturized inner core structure and combination external member that is used for optic fibre to carry in advance.

Background

With the development of communication technology, optical fiber transmission is increasingly applied to communication systems. In the fiber-to-the-home network, in the home-entry stage, the optical fiber led out from the machine room and the home-entry optical fiber are butted in communication equipment (such as an optical fiber box) through an optical fiber connector plug, so that the optical network is laid to each home.

The design of the optical fiber connector is more and more miniaturized, and when the miniaturized connector is arranged in the box body, the size of the box body can be greatly reduced, and the cost is saved. In addition, with the diversified design of the communication equipment, different communication equipment may have different types of optical fiber adapters, and for each communication equipment, a fixed type of optical fiber connector plug needs to be equipped.

Therefore, the existing optical fiber connector plug has poor compatibility, can only be adapted to the optical fiber adapter of a single model, can only use different optical fiber connector plugs aiming at the optical fiber adapters of different models, and can not use the same optical fiber connector to be converted into plugs adapted to different optical fiber adapters.

SUMMERY OF THE UTILITY MODEL

Aiming at one or more of the defects or the improvement requirements in the prior art, the utility model provides a miniaturized inner core structure for pre-forming an optical fiber end and a combined assembly thereof, wherein the inner core structure can be connected with a certain adapter to be used as a miniaturized connector or be assembled with different assemblies to be compatible with optical fiber adapters of different models; the pipe-penetrating device can also be assembled with a traction cap for pipe-penetrating construction.

To achieve the above objects, according to a first aspect of the present invention, there is provided a miniaturized inner core structure for optical fiber preform termination, including an insert core, a coupling nut, and an inner core main body;

the insert core is arranged at the first connecting end of the inner core main body;

the outer part of the inner core main body is sleeved with a connecting nut, the outer part of the inner core main body is also provided with a step, and the connecting nut is arranged at the step; the external thread of the connecting nut is matched with the internal thread of different sleeve pieces so as to be detachably connected with different sleeve pieces.

As a further improvement, the inner core main body is provided with a sealing ring groove, and the sealing ring groove is located the ferrule with between the connecting nuts.

As a further improvement of the utility model, the inner core structure further comprises a tail sleeve, a retainer ring groove is arranged below the step and is matched with the retainer ring, and one end of the tail sleeve is clamped on the retainer ring;

the connecting nut is arranged between the step and the tail sleeve.

As a further improvement of the utility model, the second link of inner core main part is optical cable crimping end, and this optical cable crimping end is equipped with the crimp ring, the crimp ring is used for compressing tightly optical cable reinforcing element in optical cable crimping end.

As a further improvement, the key position is arranged on the inner core main body and is matched with the characteristic surface corresponding to the inside of the external member.

As a further improvement of the utility model, this inner core structure uses as a connector alone, the inner core main part outside is equipped with the adapter ka tai, with the adapter phase-match that corresponds.

According to the utility model discloses a second aspect provides a combination external member, include the inner core structure, still including pulling the cap, it is equipped with the internal thread to pull cap one end, with the external screw thread accordant connection of inner core structure coupling nut, it is equipped with the through wires hole to pull the cap other end.

According to a third aspect of the present invention, there is provided a combination kit, comprising the inner core structure and a joint kit, wherein the inner thread of the joint kit is connected with the outer thread of the inner core structure connecting nut in a matching manner; or, connect the external member and be connected with the outside connection platform block of lock pin fixing base to form the connector, the connector can form detachable connection structure with supporting adapter.

As a further improvement, the joint kit includes lock nut and endotheca, endotheca and inner core structure threaded connection, the endotheca is located to the lock nut cover outside, and is equipped with on this lock nut and can dismantle the structure of being connected with supporting adapter.

As a further improvement of the utility model, the joint kit still includes the dustproof cap, dustproof cap and lock nut threaded connection.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

the utility model discloses the connecting bolt of inner core structure can carry out threaded connection with the external member of difference, forms the fiber connector of compatible different model adapters, realizes its compatibility through changing different external members. The inner core structure can also be connected with the adapter to alone through the ka tai, and the inner core structure can be connected with the direct joint of standard SC external member simultaneously, and the inner core structure can also be connected with the cap that draws in addition, can be applied to in the poling construction.

Drawings

Fig. 1 is a schematic structural view of a cross section of an inner core structure according to an embodiment of the present invention;

fig. 2 is a front view structural diagram of an inner core structure according to an embodiment of the present invention;

fig. 3 is a schematic view of a three-dimensional structure of an inner core structure according to an embodiment of the present invention;

fig. 4 is an exploded view of the inner core structure of the embodiment of the present invention;

fig. 5 is an enlarged view of a portion of fig. 1 according to the present invention;

fig. 6 is a front view structural schematic diagram of an inner core main body according to an embodiment of the present invention;

fig. 7 is a schematic sectional view of an inner core main body according to an embodiment of the present invention;

fig. 8 is a schematic side structure view of an inner core main body according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view of a core construction and a feed-through traction cap assembly in accordance with an embodiment of the present invention;

fig. 10 is an exploded view of a core construction and a poling traction cap combination kit in accordance with an embodiment of the present invention;

fig. 11 is a schematic view of an assembly of a core structure and a first joint kit compatible with an adapter according to an embodiment of the present invention;

fig. 12 is a detailed view of the corresponding kit in fig. 11 according to the embodiment of the present invention;

fig. 13 is an assembly view of an inner core structure and other different joint kits according to an embodiment of the present invention.

Fig. 14 is an assembly schematic of an inner core structure and a standard SC kit according to an embodiment of the present invention;

fig. 15 is a schematic view of a connection joint assembled by an inner core structure and a standard SC kit according to an embodiment of the present invention.

In all the figures, the same reference numerals denote the same features, in particular: 1-an inner core main body, 2-an insertion core fixing seat, 3-an insertion core, 4-an insertion core spring, 5-a sealing ring, 6-a connecting nut, 7-a clamping ring, 8-a crimping ring, 9-a tail sleeve, 10-an optical cable, 11-a traction cap, 12-a first joint external member, 13-a second joint external member, 14-a third joint external member, 15-a fourth joint external member and 16-a standard SC external member;

101-a fixed seat clamping table, 102-a key position, 103-an adapter clamping table, 104-a sealing ring groove, 105-an indication arrow, 106-a step, 107-a retainer ring groove, 108-an anti-slip groove, 109-a spring contact surface and 110-an optical fiber channel; 201-a connection station; 301-boss; 601-connecting thread, 602-second positioning end face and 603-outer wall of nut; 121-dust cap, 122-inner sleeve, 123-adapter locknut, 124-inner thread, 125-outer thread, 126-sealing structure, 127-clamping groove, 128-clamping and 129-first positioning end face.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 8, the inner core structure for an optical fiber pre-forming end of the present invention can be assembled with different kits to form a combined kit with different functions, which includes an inner core main body 1, a ferrule fixing base 2, a ferrule 3, a coupling nut 6, a tail sleeve 9, etc.; the ferrule fixing seat 2, the inner core main body 1 and the tail sleeve 9 are all of axial hollow structures and are sequentially assembled along the axial direction, and an optical fiber channel is formed inside the ferrule fixing seat, the inner core main body and the tail sleeve.

The inner core main body 1 comprises a first connecting end and a second connecting end, wherein the first connecting end is a plug core connecting end, and the second connecting end is an optical cable crimping end. The inserting core 3 is arranged in the inserting core fixing seat 2, and the inserting core fixing seat 2 is connected with the first connecting end of the inner core main body 1.

The outside cover of inner core main part 1 is equipped with coupling nut 6, and inner core main part 1 outside still is equipped with step 106 and tail cover 9, and coupling nut 6 arranges in between step 106 and the tail cover 9, and coupling nut 6's external screw thread and the internal thread phase-match of different external members can be connected with different external members detachably.

The concrete structure of the inner core main body 1 is as shown in fig. 6 to 8, a step 106 is arranged in the middle of the outer ring of the inner core main body 1, a retaining ring groove 107 is arranged below the step 106 (close to the second connecting end direction), the retaining ring groove is matched with the retainer ring 7, one end of the tail sleeve 9 is clamped on the retainer ring 7, preferably, a circumferential protruding structure is arranged outside the retainer ring 7, and the tail sleeve 9 is clamped on the protruding structure to realize stable connection between the tail sleeve and the retainer ring.

The optical cable crimping end of the inner core main body 1 is provided with a crimping ring 8, an optical cable reinforcing element (such as aramid fiber) is arranged between the crimping ring 8 and the optical cable crimping end, and the optical cable reinforcing element is tightly pressed at the optical cable crimping end through the crimping ring 8, so that the optical cable is fixedly connected with the inner core main body. Preferably, the cable crimp end is externally provided with an anti-slip groove 108 for increasing the friction between the cable strength member and the cable crimp end. More preferably, the crimp ring is further wrapped around its outer circumference with a length of heat shrink tubing for sealing the gap between the crimp ring and the outer jacket of the cable.

The retainer ring groove 107, the collar 7, the anti-slip groove 108 and the crimp ring 8 are all arranged inside the tail sleeve 9. During installation, the connecting nut 6 is sleeved on the inner core main body and limited through the step 106, the clamping ring 7 is clamped on the retaining ring groove 107 to limit the nut to move backwards, the compression joint ring 8 is sleeved on the anti-skidding groove 108, and finally the end part of the tail sleeve 9 is installed outside the clamping ring 7.

Preferably, the inner core main body 1 is further provided with a sealing ring groove 104 for arranging the sealing ring 5 to play a role of sealing and water proofing when being connected with different kits. More preferably, the seal ring groove 104 is provided above the step 106 in the axial direction of the core main body (in the direction close to the first connection end).

Preferably, the inner core main body 1 is further provided with keys 102, and the keys 102 are matched with corresponding characteristic surfaces inside the sleeve, so that the sleeve and the inner core structure can be conveniently assembled in the positive direction, and rapid positioning can be realized.

Preferably, an indication arrow 105 is further provided on the outside of the core body 1 for indicating the connection direction of the core body 1 and the set.

Preferably, the core body 1 is further provided with an adapter block 103 on the outside, and when the core body 1 itself is used as a joint, the core body can be assembled with a corresponding adapter through the adapter block 103.

Further, a spring 4 is provided between the ferrule 3 and the core body 1, one end of the spring 4 is in contact with the bottom of the boss 301 outside the ferrule 3, and the other end is in contact with the spring contact surface 109 of the first connection end of the core body 1, thereby compressing the spring 4 between the boss 301 and the spring contact surface 109.

Further, the fixing seat clamping table 101 outside the first connection end of the inner core main body 1 is clamped in the clamping groove corresponding to the ferrule fixing seat 2, so that the ferrule 3 is elastically connected to the first connection end of the inner core main body 1.

Preferably, the utility model discloses an insert core adopts standard pottery insert core, and guarantees general interface size, keeps the adapter ceramic bushing that the pottery insert core can be compatible other types.

The utility model discloses an inner core structure for assemble the combination that forms different functions with the external member of difference. Firstly, it can be assembled with a pulling cap to form a tube-through structure, secondly, it can be assembled with a different type of connector kit to form a fiber connector which can be connected with different adapters, and in addition, it can be directly assembled with a specific adapter as a single fiber connector.

In a first embodiment, shown in fig. 9 and 10, a schematic view of the assembly of the pulling cap and core construction is provided. One end of the traction cap 11 is provided with an internal thread which is matched and connected with an external thread of the connecting nut 6, in the process of screwing the threads, the sealing ring 5 and the interior of the traction cap are sealed, and the other end of the traction cap 11 is provided with a threading hole which plays a waterproof role; the combination external member that pulls cap and inner core structure formation can be convenient for carry out the poling construction in the pipeline.

Preferably, the length of the internal thread of the pulling cap 11 in the axial direction is not smaller than the length of the external thread of the coupling nut 6 in the axial direction.

In a second embodiment, shown in fig. 11 and 12, a schematic view of the assembly of the joint kit to the core structure is provided. The kit in this embodiment includes a dust cap 121, an inner sleeve 122 and an adapter lock nut 123, the adapter lock nut 123 is sleeved outside the inner sleeve 122 and connected through a buckle slot structure, a buckle slot 127 is formed in the outer periphery of the inner sleeve 122, and a corresponding buckle 128 is formed in the inner wall of the adapter lock nut 123. The bottom of the inner sleeve 122 is provided with an internal thread 124 which is matched and connected with the external thread 601 of the connecting nut 6, and can realize sealing under the elastic compression action of the sealing ring 5. The top of the adapter lock nut 123 is provided with external threads 125 for fitting connection with internal threads on the bottom of the dust cap 121. When the adapter is required to be inserted into the connector, the dust cap 121 is detached from the lock nut 123, and then the lock nut 123 and the matched adapter are assembled to form a detachable structure.

Preferably, the length of the internal thread 124 of the inner sleeve 122 in the axial direction is not less than the length of the external thread 601 of the coupling nut 6 in the axial direction, so that the first positioning end surface 129 of the sleeve 12 is in contact with the corresponding second positioning end surface 602 (between the external thread 601 and the outer wall of the nut) of the coupling nut 6, and the assembly is completed.

As shown in fig. 13, an assembly schematic diagram of the external members and the internal core structure of various different models is provided, the internal core structure, the second joint external member 13, the third joint external member 14 and the fourth joint external member 15 are assembled to form an optical fiber connection joint compatible with different adapters, the assembly principle of the internal core structure is the same as that of the first joint external member 12, and during installation, the key position 102 on the internal core structure is used for finding the direction, and the internal threads at the bottom of the second joint external member 13, the third joint external member 14 and the fourth joint external member 15 are matched and connected with the external threads 601 of the connection nut 6.

In a third embodiment, as provided in fig. 14 and 15, a schematic assembly of a standard SC kit and core configuration is provided, the fiber optic connection joint being IEC standard compliant SC adapters. In this embodiment, the inside draw-in groove that matches with the outside connection platform 201 of lock pin fixing base 2 that is equipped with of standard SC external member, consequently to the external member of this type of special construction, can realize the assembly through the connection platform of the setting on the lock pin fixing base.

Additionally, the fourth embodiment of the present invention provides an inner core structure as an implementation mode of the single optical fiber connector and the specific adapter directly connected, and the specific adapter is provided with a locking structure matching with the adapter chuck 103, thereby realizing the fixation of the miniaturized inner core and its matching adapter.

The utility model discloses a miniaturized inner core structure blocks in the ka tai of inner core main part through the lock pin fixing base to can fix the lock pin at the front end of miniaturized inner core main part, inner core structure and the assembly of different external members can form the combination external member of different usage. The connecting bolt that the inner core structure outside set up can carry out threaded connection with the external member of difference, forms the optical fiber connector who is compatible different model adapters, realizes its compatibility through changing different external members. The inner core structure can also be connected with the adapter that corresponds alone through the location platform, and the inner core structure can be directly connected with standard SC external member joint simultaneously, and the inner core structure can also be connected with the cap that draws in addition, can be applied to in the poling construction.

The utility model discloses a miniaturized inner core structure, the size is little, and installation method is simple, will miniaturize the inner core through the key position look for the orientation, pack into the external member in, then terminal surface and external member terminal surface coincidence on the coupling nut on the rotatory miniaturized inner core finish promptly.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A miniaturized inner core structure for a preformed end of an optical fiber is characterized by comprising an inserting core, a connecting nut and an inner core main body;

the insert core is arranged at the first connecting end of the inner core main body;

the outer part of the inner core main body is sleeved with a connecting nut, the outer part of the inner core main body is also provided with steps, and the connecting nut is arranged at the steps; the external thread of the connecting nut is matched with the internal thread of different sleeve pieces so as to be detachably connected with different sleeve pieces.

2. The miniaturized core structure for optical fiber preform termination according to claim 1, wherein a sealing ring groove is formed on the core body, and the sealing ring groove is located between the ferrule and the coupling nut.

3. The miniaturized core structure for optical fiber preform termination according to claim 1, wherein the core structure further comprises a tail sleeve, a retaining ring groove is arranged below the step and matched with the retaining ring, and one end of the tail sleeve is clamped on the retaining ring;

the connecting nut is arranged between the step and the tail sleeve.

4. The miniaturized core structure for optical fiber preform termination of claim 1, wherein the second connection end of the core body is a cable crimp end provided with a crimp ring for compressing the cable strength member at the cable crimp end.

5. The miniaturized core structure for optical fiber preform termination of claim 1, wherein the core body has key locations to match corresponding features inside the package.

6. The miniaturized core structure for optical fiber preform termination according to claim 1, wherein the core structure is used alone as a connector, and the core body is externally provided with an adapter chuck to be matched with a corresponding adapter.

7. A combination kit, comprising the inner core structure of any one of claims 1 to 6, and further comprising a traction cap, wherein one end of the traction cap is provided with an internal thread which is matched and connected with the external thread of the inner core structure connecting nut, and the other end of the traction cap is provided with a threading hole.

8. A combination kit comprising the core structure of any one of claims 1-5, further comprising a fitting kit, wherein the internal threads of the fitting kit mate with the external threads of the core structure coupling nut; or, connect the external member and be connected with the outside connection platform block of lock pin fixing base to form the connector, the connector can form detachable connection structure with supporting adapter.

9. The combination kit of claim 8, wherein the adapter kit comprises a locking nut and an inner sleeve, the inner sleeve is in threaded connection with the inner core structure, the locking nut is sleeved outside the inner sleeve, and the locking nut is provided with a structure for detachably connecting with a matching adapter.

10. The combination kit of claim 9, wherein the fitting kit further comprises a dust cap threadably connected to a lock nut.

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