Protective device for optical fiber adapter and LC optical fiber adapter

Abstract

The utility model discloses a protective device for an optical fiber adapter and an LC optical fiber adapter, wherein the protective device is convenient to disassemble and assemble and has better stability and better shading and dustproof effects. According to the technical scheme, the protective door comprises a mounting bottom plate and a protective door body connected with the mounting bottom plate through an elastic piece, a closed receding groove is formed in the lower end of the protective door body, the two ends of the elastic piece are embedded into the mounting bottom plate and the protective door body respectively, and a U-shaped elastic part is correspondingly arranged between the mounting bottom plate and the protective door body. The protection device has the advantages that the protection device is composed of the installation bottom plate and the protection door connected with the installation bottom plate through the elastic piece, the two ends of the elastic piece are embedded into the installation bottom plate and the protection door respectively, and the U-shaped elastic part is correspondingly arranged between the installation bottom plate and the protection door, so that the protection door is simple in overall structure, convenient to disassemble and assemble and better in stability and shading and dustproof effects.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, in particular to an optical fiber adapter. Background Art

[0002] Fiber Optic Adapter, also known as fiber coupler. Fiber Optic Adapter is a device for detachable (movable) connection between optical fibers. Fiber Optic Adapter can be divided into LC fiber optic adapter, FC fiber optic adapter, SC fiber optic adapter, etc. according to the connector type. Among them, the LC fiber optic adapter structure includes: a shell and a ceramic tube arranged in the inner cavity of the shell through a sleeve. According to the different data transmission methods, LC fiber optic adapters are divided into single-link (simplex) LC fiber optic adapters and double-link (duplex) LC fiber optic adapters. In order to realize the light-shielding and dust-proof functions of the adapter, a shrapnel is usually set at the mouth of the adapter shell. The disadvantages of traditional light-shielding and dust-proof shrapnel are: 1. It is troublesome to disassemble and assemble, the stability is poor, and the light-shielding and dust-proof effects are not ideal; 2. When the optical fiber connector is inserted into the optical fiber adapter, the core end face of the optical fiber connector is directly in contact with the shrapnel, which is easy to cause contamination and wear of the core end face; 3. Poor versatility. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a protective device for an optical fiber adapter and an LC optical fiber adapter which is convenient to disassemble and assemble, has better stability and better light shielding and dustproof effects.

[0004] In order to solve the above problems, the technical solution adopted by the utility model includes: an installation base plate, a protective door connected to the installation base plate through a spring sheet, a closed clearance groove is provided at the lower end of the protective door, the two ends of the spring sheet are respectively embedded in the installation base plate and the protective door, and a U-shaped elastic part is provided between the installation base plate and the protective door.

[0005] The protective device for the optical fiber adapter is characterized in that: positioning grooves are provided on both sides of the top of the protective door

[0006] An LC fiber optic adapter comprises a shell, wherein a ceramic tube is provided in the inner cavity of the shell through a bushing, and is characterized in that a mounting groove is provided below the mouth of the shell, and the adapter protection device described in any one of the above items is provided through the mounting groove, and positioning ribs are provided on both sides of the mouth to abut against the outer end surface of the protection door.

[0007] The LC optical fiber adapter is characterized in that the housing includes a single-joint housing and a double-joint housing.

[0008] The LC fiber optic adapter is characterized in that: an upper cover plate and a lower cover plate are respectively provided at the upper and lower ends of the single-joint shell, and two first buckles are provided on the surfaces of the upper cover plate and the lower cover plate respectively; second buckles connected to the single-joint shell are provided at both ends of the upper cover plate, a first hook connected to the single-joint shell is provided in the middle, and a single-joint positioning column is provided at the front end to cooperate with the positioning groove of the protective door; a cover strip connected to the lower mouth of the single-joint shell is integrally formed at the front end of the lower cover plate, and a third buckle connected to the single-joint shell is provided at the rear end.

[0009] The LC optical fiber adapter is characterized in that two sides of the bottom of the upper cover plate are provided with single-joint positioning plates that fit the inner wall of the single-joint housing.

[0010] The LC optical fiber adapter is characterized in that a positioning protrusion connected to the single-unit housing is provided in the middle of the lower cover.

[0011] The LC fiber optic adapter is characterized in that: two fourth buckles arranged opposite to each other are integrally formed on the end surface of the double-jointed shell, and a double-jointed cover plate is provided at the upper end, a fifth buckle and a second hook connected to the double-jointed shell are provided at both ends of the double-jointed cover plate, and a double-jointed positioning column is provided at the front end to cooperate with the positioning groove of the protective door.

[0012] The LC optical fiber adapter is characterized in that a duplex positioning plate is provided at the bottom of the duplex cover plate and is in contact with the inner wall of the duplex housing.

[0013] The LC optical fiber adapter is characterized in that a duplex cover strip is provided below the mouth of the duplex housing, and the duplex cover strip is connected to the duplex housing via a sixth buckle.

[0014] The utility model has the following advantages of the protective door for the optical fiber adapter and the LC optical fiber adapter: 1. The protective device is composed of a mounting base plate and a protective door connected to the mounting base plate through a spring sheet, and the two ends of the spring sheet are respectively embedded in the mounting base plate and the protective door, and a U-shaped elastic portion is provided between the mounting base plate and the protective door, so that the overall structure of the protective door is simple, the disassembly and assembly are convenient, and the stability, light shielding and dustproof effects are better; 2. A closed clearance groove is provided on the protective door, and when the optical fiber connector is inserted into the optical fiber adapter, the core end face of the optical fiber connector extends into the clearance groove, which can avoid direct contact with the surface of the protective door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a structural schematic diagram of the protective device of the utility model;

[0017] Figure 2This is a schematic diagram of the structure of a single-link LC optical fiber adapter of the utility model;

[0018] Figure 3 It is a cross-sectional view of a single-link LC optical fiber adapter of the utility model;

[0019] Figure 4 It is an exploded view of the single-link LC optical fiber adapter of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the utility model double LC optical fiber adapter;

[0021] Figure 6 It is a cross-sectional view of the utility model duplex LC optical fiber adapter;

[0022] Figure 7 It is an exploded view of the double LC optical fiber adapter of the utility model;

[0023] Figure 8 It is a structural schematic diagram of the double cover plate of the utility model. DETAILED DESCRIPTION Embodiment 1:

[0024] like Figure 1 As shown, the protective device for the adapter of the utility model comprises: a mounting base plate 1 and a protective door 3 connected to the mounting base plate 1 through a spring sheet 2. A closed recess 4 is provided at the lower end of the protective door 3, and the two ends of the spring sheet 2 are respectively embedded in the mounting base plate 1 and the protective door 3 by insert injection molding. A U-shaped elastic portion 5 is provided between the spring sheet 2 and the protective door 3 corresponding to the mounting base plate 1. The spring sheet 2 is usually made of a stainless steel sheet with good elasticity.

[0025] Preferably, positioning grooves 6 are provided on both sides of the top of the protection door 3. The positioning grooves 6 and the positioning structure in the adapter are used for positioning to improve the stability, light shielding and dustproof effects of the protection door. Embodiment 2:

[0026] like Figure 2-8 As shown, the LC fiber optic adapter of the utility model comprises a shell 7, 7", wherein the inner cavity of the shell 7, 7" is provided with a ceramic tube 9 through a bushing 8. A mounting groove 30 is provided below the mouth 10 of the shell 7, 7", through which the adapter protection device a described in Example 1 is provided, and positioning ribs 11 are provided on both sides of the mouth 10 of the shell 7, 7" to abut against the outer end surface of the protection door 3, so as to position the protection door 3 after it is closed. The shell 7, 7" comprises a single-joint shell 7 and a double-joint shell 7". The adapter assembled by the single-joint shell 7 is a single-joint LC fiber optic adapter, and the adapter assembled by the double-joint shell 7" is a double-joint LC fiber optic adapter.

[0027] Preferably, an upper cover plate 12 and a lower cover plate 13 are respectively provided at the upper and lower ends of the single-joint housing 7, and two first buckles 14 are provided on the surfaces of the upper cover plate 12 and the lower cover plate 13. A second buckle 15 connected to the single-joint housing 7 is provided at both ends of the upper cover plate 12, a first hook 16 connected to the single-joint housing 7 is provided in the middle of the upper cover plate 12, and a single-joint positioning column 17 is provided at the front end of the upper cover plate 12 to cooperate with the positioning groove 6 of the protective door 3. Through the above structure, a stable connection between the upper cover plate 12 and the single-joint housing 7 is achieved, and the protective door 3 of the protective device a is positioned. A cover strip 18 connected to the bottom of the mouth 10 of the single-joint housing 7 is integrally formed at the front end of the lower cover plate 13 for fixing the mounting base plate 1. A third buckle 19 connected to the single-joint housing 7 is provided at the rear end of the lower cover plate 13. Through the above structure, the lower cover plate 13 and the single-unit housing 7 are stably connected, and the mounting base plate 1 of the protective device a is fixed, thereby facilitating assembly and improving the overall stability of the adapter.

[0028] Preferably, two sides of the bottom of the upper cover plate 12 are provided with single-joint positioning plates 20 that fit the inner wall of the single-joint housing 7 , so as to further improve the stability of the upper cover plate 12 .

[0029] Preferably, a positioning protrusion 21 connected to the single-gang housing 7 is provided in the middle of the lower cover 13 , and a groove for the positioning protrusion 21 is provided on the single-gang housing 7 , so as to further improve the stability of the lower cover 13 .

[0030] Preferably, two fourth buckles 22 arranged opposite to each other are integrally formed on the end surface of the double shell 7", and a double cover plate 23 is provided at the upper end of the double shell 7", and a fifth buckle 24 and a second hook 25 connected to the double shell 7" are provided at both ends of the double cover plate 23, respectively, and a double positioning column 26 is provided at the front end of the double cover plate 23 for positioning with the positioning groove 6 of the protective door 3. Through the above structure, a stable connection between the double cover plate 23 and the single shell 7 is achieved, and the positioning of the protective door 3 of the protective device a is achieved at the same time.

[0031] Preferably, a double positioning plate 27 is provided at the bottom of the double cover plate 23 to fit the inner wall of the double housing 7 ″, so as to further improve the stability of the double cover plate 23 .

[0032] Preferably, a double cover strip 28 is provided below the mouth 10 of the double housing 7 ″, and the double cover strip 28 is connected to the double housing 7 ″ via a sixth buckle 29 , so as to fix the mounting base plate 1 of the protective device a.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A protective device for an optical fiber adapter, characterized in that: include: A mounting base plate (1) and a protective door (3) connected to the mounting base plate (1) via a spring sheet (2), wherein a closed clearance groove (4) is provided at the lower end of the protective door (3), and two ends of the spring sheet (2) are respectively embedded in the mounting base plate (1) and the protective door (3), and a U-shaped elastic portion (5) is provided between the mounting base plate (1) and the protective door (3).

2. The protective device for an optical fiber adapter according to claim 1, characterized in that: Positioning grooves (6) are provided on both sides of the top of the protective door (3).

3. An LC optical fiber adapter, comprising a housing (7, 7"), wherein an inner cavity of the housing (7, 7") is provided with a ceramic tube (9) through a bushing (8), characterized in that: A mounting groove (30) is provided below the mouth (10) of the shell (7, 7"), and the adapter protection device (a) according to any one of claims 1 to 2 is provided through the mounting groove (30), and positioning ribs (11) are provided on both sides of the mouth (10) to abut against the outer end surface of the protection door (3).

4. The LC optical fiber adapter according to claim 3, characterized in that: The housing (7, 7") comprises a single-joint housing (7) and a double-joint housing (7").

5. The LC optical fiber adapter according to claim 4, characterized in that: An upper cover plate (12) and a lower cover plate (13) are respectively provided at the upper and lower ends of the single-joint shell (7); two first buckles (14) arranged opposite to each other are provided on the surfaces of the upper cover plate (12) and the lower cover plate (13); second buckles (15) connected to the single-joint shell (7) are provided at both ends of the upper cover plate (12); a first hook (16) connected to the single-joint shell (7) is provided in the middle; and a single-joint positioning column (17) matched with the positioning groove (6) of the protective door (3) is provided at the front end; a cover strip (18) connected to the lower end of the mouth (10) of the single-joint shell (7) is integrally formed at the front end of the lower cover plate (13); and a third buckle (19) connected to the single-joint shell (7) is provided at the rear end.

6. The LC optical fiber adapter according to claim 5, characterized in that: Single-joint positioning plates (20) that fit the inner wall of the single-joint shell (7) are provided on both sides of the bottom of the upper cover plate (12).

7. The LC optical fiber adapter according to claim 5, characterized in that: A positioning protrusion (21) connected to the single-joint housing (7) is provided in the middle of the lower cover plate (13).

8. The LC optical fiber adapter according to claim 4, characterized in that: The end surface of the double-jointed shell (7") is integrally formed with two fourth buckles (22) arranged opposite to each other, and a double-jointed cover plate (23) is provided at the upper end; a fifth buckle (24) and a second hook (25) connected to the double-jointed shell (7") are provided at both ends of the double-jointed cover plate (23), respectively, and a double-jointed positioning column (26) is provided at the front end for positioning with the positioning groove (6) of the protective door (3).

9. The LC optical fiber adapter according to claim 8, characterized in that: A double-jointed positioning plate (27) is provided at the bottom of the double-jointed cover plate (23) and is in contact with the inner wall of the double-jointed housing (7").

10. The LC optical fiber adapter according to claim 8, characterized in that: A double-jointed cover strip (28) is provided below the mouth (10) of the double-jointed shell (7"), and the double-jointed cover strip (28) is connected to the double-jointed shell (7") via a sixth buckle (29).

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