Optical fiber connector for pre-connecting optical cable distribution box

Abstract

The utility model discloses an optical fiber connector for pre-connecting an optical cable distribution box, which comprises an optical fiber connector body and a traction cap, the traction cap comprises a traction cap body and a sealing sleeve body, and the traction cap body and the sealing sleeve body are of an integrated structure; a clamping block is arranged on the inner wall of the traction cap body in a protruding mode, and a sealing rib is formed on the inner wall of the sealing sleeve body in a protruding mode. A clamping part and an annular sealing surface are formed on the outer shell of the optical fiber connector body; after the traction cap is screwed on the optical fiber connector body, the clamping block on the inner wall of the traction cap body is matched with the clamping part on the outer shell of the optical fiber connector body to form an axial limiting structure, and the sealing rib on the inner wall of the sealing sleeve body and the annular sealing face on the outer shell of the optical fiber connector body form a sealing pair. The traction cap is ingenious in structural design, can be used as a part to realize traction, protection and sealing functions on the optical fiber connector body at the same time, and is large in traction tension, good in sealing effect and low in production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber communication, and in particular relates to an optical fiber connector for pre-connecting an optical cable fiber distribution box. Background Art

[0002] A traction type fiber optic connector is a type of fiber optic connector that can pass through the wiring duct of the equipment terminal together with the optical cable. Because it is usually tied to the traction cap of the fiber optic connector by a traction rope, it can be threaded in the pre-installed wiring duct to achieve the connection between the optical cable and the terminal equipment, so it is called a traction type fiber optic connector.

[0003] The existing traction-type fiber optic connectors for pre-connected optical cable distribution boxes have the following problems during use: (1) The traction cap cannot form an organic whole with the optical fiber connector body. When the traction optical cable is threaded through the wiring duct, the tensile force of the traction cap and the optical fiber connector is greatly restricted, and the tensile force is easily transmitted to the optical cable, causing deformation or damage to the optical cable; (2) In outdoor environments, the sealing and waterproof effect of the traction cap is poor. The traction cap cannot achieve both high tensile strength and strong sealing waterproof and dustproof effects, resulting in rainwater or dust easily seeping into the interior of the optical fiber connector, affecting the performance of the optical fiber connector. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an optical fiber connector for pre-connecting an optical cable fiber distribution box, which has an ingenious structural design, large traction and pulling force, and good sealing and waterproof performance.

[0005] To solve the above technical problems, the technical solution of the utility model is: a fiber optic connector for pre-connecting an optical cable fiber distribution box, comprising a fiber optic connector body and a traction cap, the traction cap comprising a rigid traction cap body and a flexible sealing sleeve body, the traction cap body and the sealing sleeve body forming an integrated structure; a clamping block is protrudingly provided on the inner wall of the traction cap body, and a sealing rib is protrudingly formed on the inner wall of the sealing sleeve body; a clamping portion cooperating with the clamping block and an annular sealing surface sealingly cooperating with the sealing sleeve body are formed on the outer shell of the fiber optic connector body; after the traction cap is screwed onto the fiber optic connector body, the clamping block on the inner wall of the traction cap body cooperates with the clamping portion on the outer shell of the fiber optic connector body to form an axial limiting structure, and the sealing rib on the inner wall of the sealing sleeve body forms a sealing pair with the annular sealing surface on the outer shell of the fiber optic connector body.

[0006] As a preferred technical solution, the clamping portion includes a clamping slot adapted to the shape of the clamping block and a docking channel for the clamping block to extend toward the clamping slot for convenient screwing and clamping.

[0007] As a preferred technical solution, an annular connecting seat is provided at the inner end of the traction cap body, an embedding hole is opened along the circumferential surface of the annular connecting seat, and an embedding block that can be embedded in the embedding hole is protrudingly formed on the inner wall of the sealing sleeve body.

[0008] As a preferred technical solution, a traction head is provided at the outer end of the traction cap body, and a traction hole is formed on the traction head.

[0009] As a preferred technical solution, the traction hole is an arc-shaped or circular hole.

[0010] As a preferred technical solution, a first connecting groove is formed between the traction head and the outer end of the traction cap body, a second connecting groove is formed on the outer shell of the optical fiber connector body, and a connecting rope is installed between the first connecting groove and the second connecting groove.

[0011] As an optional technical solution, a first connecting groove is formed on the outer wall of the traction cap body, a second connecting groove is formed on the outer shell of the optical fiber connector body, and a connecting rope is installed between the first connecting groove and the second connecting groove.

[0012] As a preferred technical solution, a draw cord is installed on the outer shell of the optical fiber connector body.

[0013] As a preferred technical solution, an anti-slip gripping portion is provided on the outer wall of the traction cap body.

[0014] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:

[0015] (1) The traction cap comprises a rigid traction cap body and a flexible sealing sleeve body, wherein the traction cap body and the sealing sleeve body form an integrated structure; a clamping block is protrudingly provided on the inner wall of the traction cap body, and a sealing rib is protrudingly formed on the inner wall of the sealing sleeve body; a clamping portion cooperating with the clamping block and an annular sealing surface cooperating with the sealing sleeve body are formed on the outer shell of the optical fiber connector body, so that when the traction cap is screwed onto the optical fiber connector body, an axial limiting structure is formed by the clamping block on the inner wall of the rigid traction cap body and the clamping portion on the outer shell of the optical fiber connector body, so that the traction cap It forms an organic whole with the fiber optic connector body. When the optical cable is pulled through the wiring duct, the pulling force mainly acts on the clamp block, and the tensile force of the fiber optic connector body will not be transmitted to the optical cable, thereby avoiding deformation or damage to the optical cable. On the other hand, the sealing ribs on the inner wall of the flexible sealing sleeve can form a reliable sealing pair with the annular sealing surface on the outer shell of the fiber optic connector body. There is no sealing ring when viewed from the outside of the connector, effectively forming an internal sealing structure. During operation, the external environment can be prevented from making the sealing ring dirty, thereby avoiding sealing failure, especially in outdoor environments, where the waterproof and dustproof sealing effect is good.

[0016] (2) The traction cap adopts a dual-material structure, which realizes the traction, protection and sealing functions as a component. It has low production cost, easy installation and use, is suitable for promotion and application, and has huge market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the traction cap in the embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the traction cap in the embodiment of the utility model;

[0022] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 6 It is a structural schematic diagram of the traction cap body part of the traction cap in the embodiment of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the sealing sleeve body of the traction cap in the embodiment of the utility model;

[0025] Figure 8 It is a structural schematic diagram of the optical fiber connector body in an embodiment of the utility model;

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the matching part of the traction cap and the optical fiber connector body;

[0027] Fig.10 yes Fig. 9 A partial enlarged view of point I in the middle. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0029] like Figures 1 to 10 As shown, the optical fiber connector for pre-connecting an optical cable fiber distribution box includes an optical fiber connector body 10 and a traction cap 20. The traction cap 20 includes a rigid (such as a plastic material such as polypropylene) traction cap body 21 and a flexible (such as thermoplastic rubber) sealing sleeve body 22. The traction cap body 21 and the sealing sleeve body 22 form an integrated structure, and can be directly integrally injection molded using a two-color injection molding process, with low production cost.

[0030] Of course, reference Figure 6 and Figure 7 The traction cap body 21 and the sealing sleeve body 22 can also be formed separately and then embedded into an integrated structure. The inner end of the traction cap body 21 is provided with an annular connection seat 25, and the annular connection seat 25 is provided with an embedding hole 26 along the circumferential surface. The inner wall of the sealing sleeve body 22 is protrudingly formed with an embedding block 27 that can be embedded in the embedding hole 26. After the traction cap body 21 and the sealing sleeve body 22 are embedded, it is convenient to form an organic whole with good mechanical properties and sealing properties. When the two-color injection molding process is used for injection molding, the injection mold can also adopt the above molding structure.

[0031] refer to Figures 3 to 7 , two blocks 23 are protrudingly provided on the inner wall of the traction cap body 21, and one or more sealing ribs 24 are protrudingly formed on the inner wall of the sealing sleeve body 22; Figure 8 A clamping portion 11 cooperating with the clamping block 23 and an annular sealing surface 12 sealingly cooperating with the sealing sleeve 22 are formed on the outer shell of the optical fiber connector body 10; the clamping portion 11 includes a clamping groove 111 adapted to the shape of the clamping block 23 and a docking channel 112 for the clamping block 23 to extend toward the clamping groove 111 for quick screwing and clamping.

[0032] When the traction cap 20 is screwed onto the fiber optic connector body 10, the block 23 on the inner wall of the traction cap body 21 cooperates with the clamping portion 11 on the outer shell of the fiber optic connector body 10 to form an axial limiting structure, so that the traction cap 20 and the fiber optic connector body 10 form an organic whole, and the traction cap 20 cannot move along the axial direction. When the traction optical cable is threaded through the wiring duct, the traction force mainly acts on the block 23, and the pulling force of the fiber optic connector body 10 will not be transmitted to the optical cable, which can avoid deformation or damage to the optical cable. At the same time, refer to Fig. 9 and Fig.10 The sealing rib 24 on the inner wall of the sealing sleeve 22 forms an interference fit sealing pair with the annular sealing surface 12 on the outer shell of the optical fiber connector body 10, effectively forming an inner sealing structure. In this way, there is no sealing ring when viewed from the outside of the connector, and the external environment can be prevented from contaminating the sealing ring during operation, thereby preventing sealing failure, especially in outdoor environments, and the waterproof and dustproof sealing effect is outstanding.

[0033] refer to Figure 4 The outer end of the traction cap body 21 is provided with a traction head 28, and the traction head 28 is formed with a traction hole, which can be convenient for passing the traction rope. The traction hole is preferably an arc or circular hole to prevent the traction hole from being cut when the traction rope is pulled. The outer wall of the traction cap body 21 is provided with an anti-slip grip portion for easy operation.

[0034] refer to Figure 1 , Figure 4 and Figure 8 In this embodiment, a first connection groove 29 is formed between the traction head 28 and the outer end of the traction cap body 21, and a second connection groove 13 is formed on the outer shell of the optical fiber connector body 10. A connection rope 30 is installed between the first connection groove 29 and the second connection groove 13, and mounting rings 31 are respectively provided at both ends of the connection rope 30. In this way, the optical fiber connector body 10 and the traction cap 20 are connected together by the connection rope 30, which can prevent the traction cap 20 from falling off and being lost from the optical fiber connector body 10. Of course, the first connection groove can also be formed on the outer wall of the traction cap body 21 to realize the installation function of the mounting ring, which should all belong to the protection scope of the present utility model.

[0035] refer to Figure 8 A pull rope 14 is installed on the outer shell of the optical fiber connector body 10. When operating, pulling the pull rope can drive the connector to unlock so that it can be pulled out from the adapter.

[0036] The traction cap 20 in the utility model, as a component, realizes the traction, protection and sealing functions of the optical fiber connector body 10 at the same time. Compared with the traditional outdoor waterproof connector, it has large traction tension, good sealing effect, low production cost, easy installation and use, is suitable for promotion and application, and has huge market prospects.

[0037] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An optical fiber connector for pre-connecting an optical cable distribution box, comprising an optical fiber connector body and a traction cap, characterized in that: The traction cap includes a rigid traction cap body and a flexible sealing sleeve body, and the traction cap body and the sealing sleeve body form an integrated structure; a clamping block is protrudingly provided on the inner wall of the traction cap body, and a sealing rib is protrudingly formed on the inner wall of the sealing sleeve body; a clamping portion cooperating with the clamping block and an annular sealing surface sealingly cooperating with the sealing sleeve body are formed on the outer shell of the optical fiber connector body; after the traction cap is screwed onto the optical fiber connector body, the clamping block on the inner wall of the traction cap body cooperates with the clamping portion on the outer shell of the optical fiber connector body to form an axial limiting structure, and the sealing rib on the inner wall of the sealing sleeve body forms a sealing pair with the annular sealing surface on the outer shell of the optical fiber connector body.

2. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 1, characterized in that: The clamping portion comprises a clamping slot adapted to the shape of the clamping block and a docking channel for the clamping block to extend toward the clamping slot for convenient screwing and clamping.

3. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 1, characterized in that: An annular connecting seat is arranged at the inner end of the traction cap body, an embedding hole is opened along the circumferential surface of the annular connecting seat, and an embedding block which can be embedded in the embedding hole is protrudingly formed on the inner wall of the sealing sleeve body.

4. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 1, characterized in that: The outer end of the traction cap body is provided with a traction head, and the traction head is formed with a traction hole.

5. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 4, characterized in that: The traction hole is an arc-shaped or circular hole.

6. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 4, characterized in that: A first connecting groove is formed between the traction head and the outer end of the traction cap body, a second connecting groove is formed on the outer shell of the optical fiber connector body, and a connecting rope is installed between the first connecting groove and the second connecting groove.

7. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 1, characterized in that: A first connecting groove is formed on the outer wall of the traction cap body, a second connecting groove is formed on the outer shell of the optical fiber connector body, and a connecting rope is installed between the first connecting groove and the second connecting groove.

8. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 1, characterized in that: A draw cord is installed on the outer shell of the optical fiber connector body.

9. The optical fiber connector for pre-connecting an optical cable distribution box according to claim 1, characterized in that: An anti-slip gripping portion is arranged on the outer wall of the traction cap body.

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