CN211318820U

CN211318820U - Dustproof SC type attenuator

Info

Publication number: CN211318820U
Application number: CN202020031223.5U
Authority: CN
Inventors: 罗冰
Original assignee: Wuhan Zhengqi Communication Technology Co Ltd
Current assignee: Wuhan Zhengqi Communication Technology Co Ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-08-21
Anticipated expiration: 2030-01-08

Abstract

The utility model discloses a dustproof SC type attenuator, which belongs to the field of optical fiber communication devices and comprises a shell, a sleeve fixing piece, a ceramic sleeve and a fixing sleeve, wherein the sleeve fixing piece, the ceramic sleeve and the fixing sleeve are inserted into the shell from inside to outside in sequence; the utility model provides an internally mounted has the dustproof part that is used for placing fixed cover afterbody port and is infected with the dust, and the removal part of slip shell surface can control the opening and closing of dustproof part.

Description

Dustproof SC type attenuator

Technical Field

The utility model relates to an optical fiber communication device field, more specifically say, relate to a dustproof SC type attenuator.

Background

The fine fiber is encased in a plastic jacket so that it can be bent without breaking. Typically, a transmitting device attached to one end of the fiber uses a light emitting diode or a beam of laser light to transmit a pulse of light to the fiber, and a receiving device at the other end of the fiber uses a light sensitive element to detect the pulse. Since the optical signal passes through each optical fiber connector many times during the transmission process, the splice loss is generated during the process. If the optical fiber joint area is stained with dust, the optical fiber is measured through OTDR, the measured tail end of the optical fiber has no Fresnel reflection peak, the slope of the curve and the attenuation are normal, and therefore the length of the optical fiber cannot be determined. Therefore, before the bare fiber is connected with the optical path, alcohol is needed to wipe the bare fiber, and the cleanness of the optical path in the joint is guaranteed.

In the prior art, the SC-type attenuator is used with a tail cap for inserting into the end of the SC-type attenuator to block the interface at the inner end of the SC-type attenuator and prevent dust from entering the interface. However, the tail cover is a structure independent from the SC type attenuator, and the tail cover is easy to forget to be inserted into the SC type attenuator again during the use process. Therefore, the utility model provides an internally mounted has dustproof construction's SC type attenuator.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provided is an SC type attenuator in which a dust-proof structure is mounted.

The utility model adopts the technical proposal that: the utility model provides a dustproof SC type attenuator, including shell, sleeve mounting, ceramic sleeve and fixed cover are by inside to the inside of outer casing of cuttage in proper order, install dustproof part in the gap between outer fixed cover and the shell inner wall, dustproof part includes shell fragment, lower shell fragment and is used for connecting the spacing frame of shell fragment and lower shell fragment, goes up the terminal of shell fragment and lower shell fragment and is crooked fold paper and two book page or leaf closures, fold paper after the closure and be used for sheltering from fixed cover afterbody port, the externally mounted of shell has the moving part that the dustproof part of control removed, folds paper after the closure and expand along with dustproof part's removal.

When the attenuator is in initial condition, when the afterbody of shell is not connected with optical fiber splice promptly, it is in closed state to go up the terminal book of shell fragment and lower shell fragment, the afterbody port of fixed cover is sheltered from to closed folding paper, prevent that the dust from getting into the light path by this port, during the sliding motion part, the moving part drives dustproof part and moves forward, the folding paper of going up shell fragment and lower shell fragment afterbody is in the in-process that removes, receive the restriction at fixed cover edge and expand gradually, the afterbody exposes until whole fixed cover, supply external optical fiber interface cuttage to go into in the shell, be connected with fixed cover. After the structure more than adopting, the utility model discloses need not to connect the tailcap that is independent of the attenuator, only need the stirring piece on slip shell surface, can control the switching of the interior dustproof part of installation in the shell.

Preferably, the moving part comprises a poking piece and a sliding block, a sliding groove is formed in the back face of the shell, and the sliding block is used for penetrating through the sliding groove to connect the dustproof part and the poking piece inside and outside the shell.

Preferably, the sliding block is connected with an upper elastic sheet on the dustproof component.

Preferably, the moving part comprises a poking piece and a sliding block, a sliding groove is formed in the side face of the shell, the sliding block is used for penetrating through the sliding groove to connect the dustproof part and the poking piece inside and outside the shell, and the poking piece arranged on the side face is more obvious.

Preferably, the slider is connected with a limiting frame on the dustproof component.

Preferably, the poking sheet is attached to the surface of the shell, and the movable poking sheet always covers the sliding groove; this prevents dust from entering the interior of the housing from the chute.

Preferably, the rear end of the fixed sleeve is provided with a fixed clamp, the limiting frame is positioned in a gap between the fixed clamp and the inner wall of the shell, and the limiting frame is positioned at the periphery of the fixed clamp so as not to hinder the normal work of the fixed clamp.

Preferably, the rear end of the fixed sleeve is provided with a fixed clamp, and the limit frame is positioned in a gap between the fixed sleeve on the inner side of the fixed clamp and the inner wall of the shell; the fixed sleeve at the inner side of the fixed clamp is the area of the fixed sleeve at the front side of the fixed clamp, the section perimeter of the area is smaller than that of the fixed clamp, and the section of the limiting frame sleeved on the outer ring of the area is reduced.

Preferably, the front surface of the shell is provided with a guide groove; the guide groove is arranged to facilitate the connection of the attenuator with the optical fiber connector.

Drawings

FIG. 1 is an exploded view of a prior art SC type attenuator;

FIG. 2 is a front view of the middle housing of the present invention;

FIG. 3 is a back view of the casing in example 1;

FIG. 4 is a back view of the casing in example 2;

fig. 5 is a schematic structural view of the dustproof structure in embodiment 1;

fig. 6 is a schematic structural view of the dustproof structure in embodiment 2:

fig. 7 is a schematic structural view of the tail end of the middle dust-proof component of the present invention in a semi-closed state.

The reference numbers in the figures illustrate:

wherein 1, a shell; 2. a sleeve fixing member; 3. a ceramic sleeve; 4. a positioning sleeve; 5. a guide groove; 6. a toggle sheet; 7. a chute; 8. an upper spring plate; 9. a lower spring plate; 10. a limiting frame; 11. a slide block.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the SC attenuator mainly includes a housing 1, a sleeve holder 2, a ceramic sleeve 3, and a fixing sleeve, and the sleeve holder 2, the ceramic sleeve 3, and the fixing sleeve are inserted into the interior of the housing 1 from the inside to the outside. The rear end of the positioning sleeve 4 is provided with a fixing clamp, and the middle part of the positioning sleeve is of a columnar structure inserted with the ceramic sleeve 3, so that the positioning sleeve 4 forms a T-shaped result. The fixing clip is used for connecting and fixing an external optical fiber connector, but the cross section of the fixing clip is rectangular, and the cross section area of the fixing clip is larger than the circular area in the middle of the positioning sleeve 4.

As shown in fig. 2, a guide groove 5 is provided at the front rear edge of the housing 1. As shown in fig. 3, a slide groove 7 is provided on the back surface of the housing 1, a dial piece 6 is slidably connected to the slide groove 7, and the dial piece 6 is slid back and forth to control opening and closing of the dust-proof member inside the housing 1.

As shown in fig. 5 and 7, the dust-proof component includes an upper elastic sheet 8, a lower elastic sheet 9 and a limiting frame 10, the limiting frame 10 is located on two sides of the upper elastic sheet 8 and the lower elastic sheet 9, and the limiting frame 10 is respectively connected with the upper elastic sheet 8 and the lower elastic sheet 9. The tail ends of the upper elastic sheet 8 and the lower elastic sheet 9 are both bent hinges, and the tail end port of the fixed sleeve can be completely shielded when the two hinges are closed, so that dust is prevented from entering a light path from the port. The bottom of the toggle piece 6 on the shell 1 is connected with a sliding block 11, the sliding block 11 is connected with the sliding groove 7 in a sliding mode, and the bottom of the sliding block 11 is connected with the upper elastic piece 8. The poking sheet 6 slides towards the front end of the shell 1, the poking sheet 6 drives the upper elastic sheet 8 and the lower elastic sheet 9 to move, and the bent folding part of the upper elastic sheet 8 and the lower elastic sheet 9 gradually expands until the tail port of the fixing sleeve is completely exposed for the external light plug of the fixing sleeve. Because the fixing clamp consists of a left clamping block and a right clamping block, the hinge at the tail ends of the upper elastic sheet 8 and the lower elastic sheet 9 is positioned between the two clamping blocks. And the hinge portion should have good restorability, the upper and lower

elastic pieces

8 and 9 may be made of steel material.

In some examples, the limiting frame 10 connecting the upper spring plate 8 and the lower spring plate 9 is located at the rear half part of the two, namely the limiting frame 10 is located in a gap between the fixing clip and the inner wall of the shell 1.

In some examples, the limiting frame 10 connecting the upper spring plate 8 and the lower spring plate 9 is located at the rear half part of the two, that is, the limiting frame 10 is located in the gap between the fixing sleeve inside the fixing clip and the inner wall of the housing 1.

In some examples, the paddle 6 abuts the surface of the housing 1 and the sliding of the paddle 6 on the chute 7 always shields the chute 7.

Example 2

As shown in fig. 4, this embodiment is different from embodiment 1 in that slide grooves 7 are provided on both sides of a housing 1, and a slider 11 is connected to a stopper frame 10 on a dust-proof member.

While the above is directed to the preferred embodiment of the present invention, it is not intended that it be limited, except as by the appended claims. The present invention is not limited to the above embodiments, and the specific structure thereof allows for changes, all the changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a dustproof SC type attenuator, includes shell, sleeve mounting, ceramic sleeve and fixed cover, and sleeve mounting, ceramic sleeve and fixed cover are by inside to outside cuttage in proper order into the inside of shell, its characterized in that: install dustproof part in the gap between fixed cover and the shell inner wall, dustproof part includes shell fragment, lower shell fragment and is used for connecting the spacing frame of shell fragment and lower shell fragment, goes up the terminal of shell fragment and lower shell fragment and is the crooked folding paper and two foldings are closed, and the folding paper after the closure is used for sheltering from fixed cover afterbody port, and the externally mounted of shell has the removal part that control dustproof part removed, and the folding paper after the closure is unfolded along with dustproof part's removal.

2. A dust-protected SC-type attenuator according to claim 1, wherein: the movable part comprises a poking piece and a sliding block, a sliding groove is formed in the back face of the shell, and the sliding block is used for penetrating through the sliding groove to connect the dustproof part and the poking piece inside and outside the shell.

3. A dust-protected SC-type attenuator according to claim 2, wherein: the sliding block is connected with an upper elastic sheet in the dustproof component.

4. A dust-protected SC-type attenuator according to claim 1, wherein: the movable part comprises a poking piece and a sliding block, a sliding groove is formed in the side face of the shell, and the sliding block is used for penetrating through the sliding groove to connect the dustproof part and the poking piece inside and outside the shell.

5. A dustproof SC type attenuator according to claim 4, wherein: the slider is connected with a limiting frame on the dustproof part.

6. A dustproof SC type attenuator according to claim 2 or 4, wherein: the poking sheet is attached to the surface of the shell, and the movable poking sheet always covers the sliding groove.

7. A dust-protected SC-type attenuator according to claim 3, wherein: the rear end of the fixed sleeve is provided with a fixed clamp, and the limiting frame is positioned in a gap between the fixed clamp and the inner wall of the shell.

8. A dustproof SC type attenuator according to claim 4, wherein: the rear end of the fixed sleeve is provided with a fixed clamp, and the limiting frame is positioned in a gap between the fixed sleeve on the inner side of the fixed clamp and the inner wall of the shell.

9. A dustproof SC-type attenuator according to claim 7 or 8, wherein: the front of shell is equipped with the guide way.