阅读说明：本技术 光纤连接器 (Optical fiber connector ) 是由 王金殿 余永强 徐骏 孙亚磊 李智乐 于 2018-12-24 设计创作，主要内容包括：本发明涉及一种光纤连接器。该光纤连接器包括壳体组件,壳体组件内设有插芯和用于向前顶推插芯的弹簧,壳体组件后部连接有用于对弹簧进行限位的弹簧保持座,弹簧保持座包括保持座主体,在保持座主体上设有弹性悬臂,所述弹性悬臂以后端靠近壳体组件的径向外侧的形式向后倾斜悬伸,弹性悬臂的悬伸端向后与壳体组件挡止配合。上述技术方案解决了现有技术中的弹簧保持座与壳体部件之间的卡钩容易松脱而导致连接失效的问题。(The present invention relates to an optical fiber connector. The optical fiber connector comprises a shell assembly, wherein a ferrule and a spring used for pushing the ferrule forwards are arranged in the shell assembly, the rear part of the shell assembly is connected with a spring retaining seat used for limiting the spring, the spring retaining seat comprises a retaining seat main body, an elastic cantilever is arranged on the retaining seat main body, the rear end of the elastic cantilever inclines backwards and overhangs in a manner of being close to the radial outer side of the shell assembly, and the overhanging end of the elastic cantilever is in blocking fit with the shell assembly backwards. The technical scheme solves the problem that the clamping hook between the spring holding seat and the shell component is easy to loosen to cause connection failure in the prior art.)

1. Fiber connector, including housing assembly, be equipped with the lock pin in the housing assembly and be used for pushing up the spring of lock pin forward, the housing assembly rear portion be connected with be used for right the spring carries out spacing spring retaining seat, and spring retaining seat is equipped with elastic cantilever, its characterized in that including keeping a main part in keeping a main part: the rear end of the elastic cantilever is close to the radial outer side of the shell assembly and is inclined backwards and suspended, and the suspended end of the elastic cantilever is in stop fit with the shell assembly backwards.

2. The fiber optic connector of claim 1, wherein: the inner wall of the shell component is provided with a concave part, and the concave part is provided with a stop surface which is arranged towards the front and used for the elastic cantilever to stop and match backwards.

3. The fiber optic connector of claim 2, wherein: the recess is formed by an aperture.

4. The fiber optic connector of claim 3, wherein: the tail end of the elastic cantilever is of a step structure, the step structure comprises a step surface and a step side surface, the step surface is vertically arranged backwards, the step side surface is perpendicular to the step surface, and the step surface and the step side surface are respectively matched with the shell assembly in a blocking mode in the axial direction and the radial direction of the optical fiber connector.

5. The optical fiber connector according to claim 1 or 4, wherein: the root of the elastic cantilever is in transition connection with the main body of the holding seat through an arc.

6. The fiber optic connector of claim 5, wherein: the part of the main body of the holding seat, which is connected with the elastic cantilever, is of a cylindrical structure.

Technical Field

The present invention relates to an optical fiber connector.

Background

Along with the rapid development of communication such as big data and cloud computing, the requirement on network broadband is increased in a blowout mode, so that higher requirements are provided for optical fiber network density, and the traditional optical fiber wiring network cannot meet the development requirement increasingly. The developed MPO/MTP optical fiber connector is a multi-core multi-channel plug-in connector and has the advantages of high connection density, stable and reliable performance, small volume, convenience in operation, easiness in wiring management and the like. The optical fiber connector with the guide pin hole is connected with the female optical fiber connector with the guide pin hole in a butt joint mode, the male optical fiber connector with the guide pin hole is locked on the adapter in a butt joint mode, the pushing force of a compression spring is used for keeping the physical contact of the matched multi-core inserting cores, and therefore the multi-optical fiber interconnection of two optical cables is achieved.

Chinese utility model patent No. CN202453542U discloses an optical fiber connector, which includes a housing, a ferrule assembly, a holder, and a coupling ring; the holding seat is a spring holding seat, a spring is contained in the holding seat, one end of the spring abuts against the ferrule assembly, and the spring is extruded by the holding seat so that the elastic force of the spring is transmitted to the ferrule assembly to reliably fix the ferrule assembly in the shell; the holding seat comprises a first frame and a second frame, the second frame forms a cantilever beam structure, a hook is arranged at the front end of the cantilever beam, and the hook on the second frame is just clamped in the shell in the pushing process of the holding seat. During actual construction and wiring, pulling force is often transmitted to the holding seat, and the cantilever beam structure on the holding seat of the optical fiber connector is very easy to deform, so that the hook can be separated from the shell, and the product fails.

Disclosure of Invention

The invention aims to provide an optical fiber connector, which solves the problem that in the prior art, a clamping hook between a spring retaining seat and a shell component of the optical fiber connector is easy to loosen to cause connection failure.

In order to achieve the purpose, the technical scheme of the optical fiber connector provided by the invention is as follows: the optical fiber connector comprises a shell assembly, wherein a ferrule and a spring used for pushing the ferrule forwards are arranged in the shell assembly, a spring retaining seat used for limiting the spring is connected to the rear portion of the shell assembly, the spring retaining seat comprises a retaining seat main body, an elastic cantilever is arranged on the retaining seat main body, the elastic cantilever tilts and overhangs backwards in a mode that the rear end of the elastic cantilever is close to the radial outer side of the shell assembly, and the overhanging end of the elastic cantilever is matched with the shell assembly in a blocking mode backwards.

The invention has the beneficial effects that: compared with the optical fiber connector with the elastic cantilever which is obliquely and forwardly suspended in a manner that the rear end of the elastic cantilever is close to the radial outer side of the shell assembly, when the spring retaining seat is subjected to axial tension, the elastic cantilever is subjected to outward tension, the effect that the elastic cantilever is more tensioned is generated, and therefore the spring retaining seat is better retained in the shell assembly without falling off to cause connection failure.

Furthermore, a concave part is arranged on the inner wall of the shell assembly, and the concave part is provided with a stop surface which is arranged towards the front and used for the elastic cantilever to stop and match backwards.

The beneficial effects are that: the inner wall of the shell is provided with a concave part, so that the processing is convenient.

Further, the recess is formed by an opening.

The beneficial effects are that: the concave part is formed by an opening, so that field processing is further facilitated; meanwhile, the elastic cantilever is in stop fit with the concave part backwards, and the concave part is processed into an opening, so that the spring retaining seat is convenient to disassemble.

Furthermore, the tail end of the elastic cantilever is of a step structure, the step structure comprises a step surface and a step side surface, the step surface is vertically arranged backwards, the step side surface is perpendicular to the step surface, and the step surface and the step side surface are respectively in stop fit with the shell assembly in the axial direction and the radial direction of the optical fiber connector.

The beneficial effects are that: when the spring retaining seat is under axial tension, the step structure of the elastic cantilever enables the spring retaining seat to be respectively in blocking fit with the shell assembly in the axial direction and the radial direction, the effect of tightening the spring retaining seat is generated, and the spring retaining seat is prevented from sliding in the shell assembly.

Furthermore, the root of the elastic cantilever is in transition connection with the main body of the holding seat through an arc.

The beneficial effects are that: the root of the elastic cantilever is in transition connection with the main body of the holding seat through an arc, so that the phenomenon that the elastic cantilever is broken due to stress concentration on the root of the elastic cantilever and the joint of the main body of the holding seat in the propelling process of the spring holding seat can be avoided.

Furthermore, the part of the main body of the holding seat, which is connected with the elastic cantilever, is of a cylindrical structure.

The beneficial effects are that: the part of the main body of the holding seat, which is connected with the elastic cantilever, is of a cylindrical structure, and on one hand, the cylindrical structure is provided with a space for accommodating the optical fiber; on the other hand, the tubular structure who links to each other with elastic cantilever is overall structure, compares in prior art and connects two half return bends through the buckle connection respectively at the elastic cantilever of both sides, and tubular structure's intensity is higher, and the lateral wall between the both sides wall that tubular structure is connected with elastic cantilever can play the enhancement supporting role, avoids the spring to keep the seat to deviate from in following the casing subassembly better.

Drawings

FIG. 1 is a schematic structural diagram of an optical fiber connector according to the present invention;

FIG. 2 is a longitudinal cross-sectional view of a fiber optic connector provided in accordance with the present invention;

fig. 3 is a schematic structural diagram of a spring holder of an optical fiber connector according to the present invention.

In the figure: 1-shell component, 2-ferrule, 3-positioning seat, 4-optical fiber, 5-spring, 6-spring holding seat, 7-elastic cantilever, 8-transition arc, 9-inner shell notch, 10-barb, 11-fixing sleeve, 12-inner shell, 13-outer shell, 14-step surface and 15-step side surface.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 and fig. 2, the optical fiber connector provided by the present invention includes a housing assembly 1, the housing assembly 1 includes an inner housing 12 and an outer housing 13 movably sleeved on the inner housing 12, the inner housing 12 is provided with a ferrule 2 and a spring 5 for pushing the ferrule 2 forward, and a positioning seat 3 for positioning the ferrule 2 is provided between the ferrule 2 and the spring 5; a spring holder 6 for limiting the spring 5 is connected to the rear of the housing assembly 1. As shown in fig. 3, the spring holder 6 includes a holder body including elastic cantilevers 7 arranged at both sides and a fixing sleeve 11 connected to the elastic cantilevers 7, the elastic cantilevers 7 are obliquely suspended toward the rear in a manner close to the radially outer side of the housing assembly 1, the distal end of the elastic cantilevers 7 has a stepped barb 10 which is in stop-fit with the inner housing notch 9 on the inner housing 12, and the barb 10 includes a stepped surface 14 arranged vertically toward the rear and a stepped side surface 15 perpendicular to the stepped surface 14, thereby ensuring that the barb 10 does not fall off when the spring holder 6 is mounted in the housing assembly 1.

In the present embodiment, the inner housing notch 9 is a concave opening formed on the inner wall of the inner housing 12, and the opening has a stop surface respectively engaged with the step surface 14 and the step side surface 15 of the step-shaped barb 10 in the axial direction and the radial direction of the optical fiber connector, so that when the spring holder 6 receives a tensile force in the axial direction, the elastic cantilever 7 is not easily deformed, and the elastic cantilever 7 does not come off from the inner housing notch 9 due to the stop engagement with the inner housing notch 9, as in the prior art, due to the radial contraction.

In order to avoid the spring holder 6 from breaking due to the stress concentration at the connection of the root of the elastic cantilever 7 and the holder body when the spring holder 6 is assembled into the housing assembly 1, the spring holder 6 in this embodiment is connected at the connection of the elastic cantilever 7 and the holder body by the transition arc 8 in fig. 3. The part of being connected with elastic cantilever 7 on the keeping seat main part is fixed cover 11, and fixed cover 11 is the tubular structure, has the perforation that supplies optic fibre 4 to pass, and fixed cover 11 is connected the lateral wall between the both sides wall of elastic cantilever 7 and can be played and strengthen the supporting role, avoids barb 10 to drop from interior casing breach 9 better.

When the optical fiber connector is used, the ferrule 2 (bonded with the optical fiber 4 into a whole), the positioning seat 3, the spring 5 and the spring holding seat 6 are installed in the housing assembly 1 according to the direction from right to left in fig. 1, in the assembling process, the main body part of the holding seat of the spring holding seat 6 extrudes the spring 5, so that the elastic force of the spring is transmitted to the positioning seat 3 and the ferrule 2, finally, one end of the spring 5 is abutted to the positioning seat 3, and the ferrule 2 is abutted by the positioning seat 3 so as to position the ferrule 2. When the assembly is completed, the barb 10 of the elastic cantilever 7 just falls into the inner shell notch 9 and is matched with the inner shell notch 9 in a stopping way so as to prevent falling off.

During the actual wiring operation, a tensile force is often transmitted to the spring holder 6. When the spring holder 6 is pulled in the axial direction, the elastic cantilever 7 is tensioned radially outward, and tends to expand outward, but under the stopping action of the step surface 14 and the step side surface 15 of the barb 10, the elastic cantilever 7 is pulled more and more tightly, and cannot be radially contracted and fall off from the inner shell notch 9 as in the prior art.

In the above embodiment, the barb of the step structure on the elastic cantilever is matched with the stop of the notch of the inner shell in the axial direction and the radial direction of the optical fiber connector to ensure that the barb does not fall off from the notch of the inner shell. In other embodiments, the inner wall of the inner shell may be provided with a protrusion, and the elastic cantilever may be provided with a slot to realize the stop fit of the two to ensure that the barb does not fall off from the notch of the inner shell.

In the above embodiments, two elastic cantilevers are provided, in other embodiments, only one elastic cantilever or only one elastic cantilever may be provided, as long as the elastic cantilever can be in anti-disengaging fit with the notch of the inner shell.

In the above embodiment, the inner shell notch is a concave open structure. In other embodiments, the inner housing notch may also take other forms, for example, it may take the form of a groove, and the bottom wall of the groove is used to stop the elastic cantilever to prevent it from sliding.