CN111413769A

CN111413769A - Optical fiber coupler and optical fiber plug

Info

Publication number: CN111413769A
Application number: CN202010305451.1A
Authority: CN
Inventors: 石尚娟; 王晓玉
Original assignee: Anhui Paisike Network Technology Co ltd
Current assignee: Anhui Paisike Network Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-07-14

Abstract

The invention belongs to the technical field of optical fiber connectors, and particularly relates to an optical fiber coupler and an optical fiber plug; a connector is arranged in the fixed shell in a sliding manner, and the end part of the connector is connected with an optical fiber wire; the side surfaces of the upper end and the lower end of the fixed shell are provided with swing cavities, and clamping press plates are respectively and rotatably arranged in the swing cavities through rotating column lines; the bottom end of the swinging cavity is provided with a plug hole; a plurality of limiting slots are uniformly formed in the upper end surface and the lower end surface of the connector; the lower surface of one end of the clamping pressure plate is fixedly provided with an inserting column, and the upper end surface of the clamping pressure plate is connected with the upper wall of the swinging cavity through a rubber spring; the inserting column is inserted into the inserting hole and the limiting slot in a sliding manner; the other end of the clamping pressure plate is positioned at the outer end part of the fixed shell; a stepped splicing cavity is formed inside the connector, and a stepped optical fiber plug is spliced in the stepped splicing cavity; the connector after being adjusted is conveniently and stably connected with the optical fiber plug piece, so that the two end faces of the input optical fiber and the output optical fiber are in close contact.

Description

Optical fiber coupler and optical fiber plug

Technical Field

The invention belongs to the technical field of optical fiber connectors, and particularly relates to an optical fiber coupler and an optical fiber plug.

Background

Optical fiber has been widely used as a transmission medium for signals in recent years due to its advantages of high bandwidth and low loss. To enable the signal to be transmitted over greater distances, high power laser diodes are seeded, thereby enabling the coupling of energy into the fiber to be greatly increased. However, when the high-intensity infrared light beam is emitted from one end of the optical fiber, the human eye cannot determine whether the light beam exists, and if the eyes of the operator are exposed to the light beam carelessly, the eyes of the operator are often permanently damaged.

The optical fiber coupler, also called splitter, connector, adapter and optical fiber flange, is an element for realizing optical signal splitting/combining or for extending optical fiber link, and belongs to the field of optical passive element. In the process, the optical fiber coupler becomes a bridge in the process that one receiving and one sending of the movable optical fiber connector are connected with the photoelectric conversion module, and the optical fiber connector and the optical fiber coupler are combined to form the optical fiber connector assembly.

The chinese patent discloses an optical fiber coupler, the application number of which is 2014102425557, comprising an optical fiber plug, an optical fiber socket and a detection module, wherein the optical fiber plug is inserted in the optical fiber socket; the optical fiber socket comprises a front socket body and a rear socket body which are symmetrically arranged, the front socket body and the rear socket body are symmetrically arranged by taking a partition plate as a symmetric plate, and an optical fiber accommodating cavity which is communicated with the front socket body and the rear socket body and is matched with an optical fiber in shape is arranged in the middle of the partition plate; a plug accommodating cavity is formed in the front socket body; and the bottom of the front coupler is also provided with an insertion groove for inserting and fixing the detection module and a detection hole for inserting the detection terminal.

Although the connection structure is simpler and the whole structure is more compact; the optical fiber socket on the existing optical fiber coupler is fixedly arranged on the fixing device of the optical fiber coupler when the optical fiber plug is inserted into the optical fiber coupler, and the optical fiber plug is difficult to be accurately and efficiently stably connected with the optical fiber coupler because the installation position of the optical fiber coupler is narrow; meanwhile, most of the existing optical fiber couplers adopt a straight-through type plugging mode, and when the optical fiber couplers are arranged at positions with large vibration amplitude, the phenomenon that optical fiber glass at the connecting positions of the optical fiber couplers and the optical fiber plugs is broken is easily caused.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the optical fiber coupler and the optical fiber plug, which are mainly used for solving the problem that the optical fiber plug is difficult to accurately and efficiently stably connect with the optical fiber coupler due to the fact that the installation position of the optical fiber coupler is narrow and the plug socket on the optical fiber coupler is fixedly arranged in the prior art; meanwhile, most of the existing optical fiber couplers adopt a straight-through type plugging mode, and when the optical fiber couplers are arranged at positions with large vibration amplitude, the phenomenon that optical fiber glass at the connecting positions of the optical fiber couplers and the optical fiber plugs is broken is easily caused.

The technical scheme adopted by the invention to solve the technical problem is as follows: the invention relates to an optical fiber coupler which comprises a fixed shell, a connector and an optical fiber lead; a connector is arranged in the fixed shell in a sliding manner, and the end part of the connector is connected with an optical fiber wire; swing cavities are formed in the side faces of the upper end and the lower end of the fixed shell, and clamping pressing plates are respectively and rotatably arranged in the swing cavities through rotating column lines; the bottom end of the swinging cavity is provided with a plug hole; a plurality of limiting slots are uniformly formed in the upper end face and the lower end face of the connector and are in sliding alignment with the inserting holes; the lower surface of one end of the clamping pressure plate is fixedly provided with an inserting column, and the upper end surface of the clamping pressure plate is connected with the upper wall of the swinging cavity through a rubber spring; the inserting column is inserted into the inserting hole and the limiting slot in a sliding mode; the other end of the clamping pressing plate is positioned at the outer end part of the fixed shell; a stepped splicing cavity is formed in the connector, and a stepped optical fiber plug is spliced in the stepped splicing cavity; two acting side walls of the connector are provided with pushing insertion plates, and the side surfaces of the pushing insertion plates are provided with limit stops;

when the optical fiber coupler works, when an optical fiber plug connected to an optical fiber needs to be inserted into a connector of the optical fiber coupler, if the position of the optical fiber coupler is narrow, an operator needs to adjust an optical fiber network for integral adjustment, and the optical fiber plug can be conveniently inserted into the optical fiber coupler; when the optical fiber coupler needs to be used, an operator adjusts the extending amount of the connector according to the convenient degree of the mutual connection between the optical fiber plug and the optical fiber coupler; when the extension length of the connector needs to be adjusted, an operator can press the end part of a clamping pressure plate which is rotatably arranged on the fixed shell, the other end of the clamping pressure plate can extrude the rubber spring, meanwhile, an inserting column arranged on the bottom end face of the clamping pressure plate can be separated from a limiting slot, and then the operator slowly pulls the pushing inserting plates which are arranged on the two sides at a constant speed, so that the pushing inserting plates can drive the connector to extend out of the fixed shell, the length of the connector outside the fixed shell is adjusted, and the optical fiber plug is conveniently connected with the connector; after the length of the connector is adjusted, an operator loosens the clamping pressing plate, the clamping pressing plate drives the splicing column to be spliced into the next limiting slot under the thrust of the rubber spring, and then the splicing column which is arranged on the upper surface and the lower surface of the fixed shell in a sliding mode can play a role in splicing and fixing the connector, so that the adjusted connector is stably connected with the optical fiber plug, two end surfaces of the input optical fiber and the output optical fiber are in tight contact, and light energy emitted by the input optical fiber can be coupled into the output optical fiber to the maximum extent; the connector is internally provided with a step splicing cavity, so that the optical fiber plug is conveniently connected into the optical fiber coupler in a step splicing mode, and the optical fiber can stably transmit; most of the existing optical fiber couplers adopt a straight-through type plugging mode, when the optical fiber couplers are arranged at positions with large vibration amplitude, the phenomenon that optical fiber glass at the connection part of the optical fiber couplers and an optical fiber plug is broken is easily caused, and further stable output and input of optical fiber signals are influenced.

Preferably, sliding insertion cavities are formed in the pushing insertion plates symmetrically arranged on two sides, and pressing strips are arranged in the sliding insertion cavities in a sliding mode; the section of the pressing strip is of an I-shaped structure, and the upper end part of the pressing strip is fixed on the upper end surface of the clamping pressing plate; a limiting strip is fixed on the bottom end face of the pressing strip and is arranged in the sliding insertion cavity in a sliding mode; when the length of the connector needs to be adjusted, a worker can symmetrically press the pressing strips arranged on the clamping pressing plate with one hand, so that the pressing strips can play a role in bearing pressure on the clamping pressing plate, meanwhile, the pressing area between the pressing force and the clamping pressing plate is increased, and the phenomenon that the end part of the clamping pressing plate is extruded and broken due to overlarge pressing force is effectively prevented, and further the service life of the clamping pressing plate is influenced; meanwhile, the pressing strip is arranged in the sliding insertion cavity in a sliding mode, so that the pressing strip can perform left-right limiting operation on the clamping pressing plate, the phenomenon that the clamping pressing plate swings left and right in the swinging cavity due to overlarge pressing force of an operator is effectively prevented, the insertion column is further influenced to be stably and accurately clamped into the limiting insertion slot, the phenomenon that the connection stability of the telescopic adjusting connector is poor is caused, and the stable adjustment of the connector is further influenced.

Preferably, the upper end surface and the lower end surface of the connector are provided with sliding guide grooves, and the upper end surface of each sliding guide groove is provided with a protruding strip; a rubber spring is fixed on the bottom end face of the clamping pressing plate and is arranged in the sliding guide groove in a sliding mode; when the clamping pressing plate swings downwards during working, the rubber spring arranged at the bottom end of the clamping pressing plate can play a role of limiting and supporting the bottom end of the clamping pressing plate, so that the situation that when the pressing force of the outer end part of the clamping pressing plate is too large, an operator is required to manually restore the clamping pressing plate arranged at the outer end part of the solid shell to a tilting device, and the effect of inserting and fixing the connector by the inserting column on the clamping pressing plate is influenced; simultaneously the protruding strip that sets up in the sliding guide groove can increase the frictional force between rubber spring bottom portion and the sliding guide groove, when effectively preventing rubber spring compressive force too big, leads to rubber spring to produce the phenomenon of slope, and then influences the stable support of rubber spring to the joint clamp plate.

The optical fiber plug is suitable for the optical fiber coupler; comprises a fixed plug, a step chuck, a sliding chuck and an electric contact head; a stepped chuck is fixedly arranged at the end part of the fixed plug, and sliding slots are formed in the stepped chuck and the fixed plug; a sliding chuck is arranged in the sliding slot in a sliding mode through a rubber spring, and an electric contact head is arranged in the sliding chuck in a sliding mode; an optical fiber lead is arranged in the electric contact head; the stepped clamping head and the sliding clamping head are both made of rubber materials; clamping plates are arranged on two sides of the fixed plug, and inserting clamping strips are arranged at the end parts of the clamping plates; the inserting clamping strip is connected with sliding inserting cavities arranged on two sides of the connector in a sliding clamping manner; the optical fiber plug and the optical fiber coupler are mutually matched for use; when the optical fiber plug and the connector of the optical fiber coupler are required to be connected with each other, an operator can adjust the length of the connector of the optical fiber coupler, then the operator inserts the stepped clamping head and the sliding clamping head which are arranged at the end part of the fixed plug into the stepped splicing cavity, along with the continuous insertion of the stepped plug and the sliding clamping head into the stepped splicing cavity, the extrusion force of the side wall of the stepped splicing cavity can lead the sliding clamping head to be contracted into the sliding slot, so that the rubber spring which is arranged in the sliding slot is compressed, after the sliding clamping head is contracted into the sliding slot, the electric contact head which is arranged in the sliding clamping head can extend out from the sliding clamping head, further the optical fiber lead which is arranged on the electric contact head can be in contact communication with the optical fiber lead which is arranged on the connector, and then the splicing clamping bars which are arranged at the two sides of the fixed plug can, thereby stably connecting the optical fiber plug to the optical fiber coupler; the rubber stepped clamping head and the rubber sliding clamping head are matched, so that the elastic buffering effect on the optical fiber glass can be increased, the stepped clamping head and the sliding clamping head are inserted into the matching of the stepped splicing cavity formed in the optical fiber coupler provided by the invention, the connection of a stepped structure between the optical fiber coupler and the optical fiber plug can be realized, the protection effect on the optical fiber is increased, and the transmission between the optical fibers is more stable.

Preferably, the upper end and the lower end of the inserting clamping strip are both provided with T-shaped limiting grooves, and the T-shaped limiting grooves are matched with the sliding inserting grooves in a sliding manner through sliding arrangement of limiting strips in the sliding inserting cavities; the depth of the T-shaped limiting groove is greater than the thickness of the limiting strip, and the upper side wall of the T-shaped limiting groove is provided with corrugated bulges; when the optical fiber plug is connected to the optical fiber coupler, an operator slowly presses the pressing strip downwards, so that the distance between the limiting strip arranged at the bottom end of the pressing strip and the sliding splicing cavity can be increased; then when an operator connects the optical fiber plug to the optical fiber coupler, the splicing clamping strips arranged on the two sides of the fixed plug can be slidably inserted into the sliding splicing cavity, meanwhile, the limiting strips arranged in the sliding splicing cavity can be slidably inserted into the T-shaped limiting grooves, after the fixed plug is completely contacted with the end part of the connector, the operator loosens the pressing strips, the pressing strips can move upwards under the thrust of the rubber spring, and then the limiting strips arranged at the bottom ends of the two sides of the pressure strips can play a splicing clamping effect on the splicing clamping strips, so that the stable connection effect between the optical fiber plug and the adjustable optical fiber coupler is improved; the effect that the existing optical fiber plug is difficult to realize stable connection due to the movably arranged connector on the optical fiber coupler is effectively prevented; meanwhile, the T-shaped limiting groove can play a role in limiting sliding of the limiting strip, and can play a role in pressure supporting of the pressing strip and the clamping pressing plate, so that the phenomenon that the splicing column is separated from the limiting slot when the clamping pressing plate arranged on the fixed shell moves towards the upper surface and the lower surface of the connector under the external extrusion force when the optical fiber plug is connected with the optical fiber coupler, the firmness of the connector and the fixed shell is influenced, and the phenomenon that the optical fiber plug falls off is caused.

Preferably, one end face of the fixed plug is provided with a limiting clamping strip, and the limiting clamping strip is in mutual sliding insertion fit with sliding guide grooves formed in the upper end face and the lower end face of the connector; the bottom end surface of the limiting clamping strip is provided with a corrugated groove, and a convex strip arranged in the sliding guide groove is clamped in the corrugated groove; during operation, when the fixed plug is attached to the side face of the connector, the limiting clamping strips arranged on the fixed plug can be inserted into the sliding guide grooves, and meanwhile, the corrugated grooves arranged on the bottom end face of the limiting clamping head can be in clamping contact with the protruding strips arranged on the sliding guide grooves, so that the stable connection effect between the fixed plug and the connector is improved, and meanwhile, the stable firm connection between the optical fiber plug and the optical fiber coupler is improved.

The invention has the following beneficial effects:

1. according to the invention, through the matching of the clamping pressure plate and the inserting columns, when an operator presses the clamping pressure plate, the inserting columns arranged on the bottom end surface of the clamping pressure plate can be separated from the limiting slots, and the operator slowly pulls the pushing inserting plates arranged on the two sides at a constant speed, so that the pushing inserting plates can drive the connector to extend out of the fixed shell, the length of the connector outside the fixed shell is further adjusted, and the optical fiber plug is conveniently connected with the connector; the splicing column can play a role in splicing and fixing the connector, so that the adjusted connector is stably connected with the optical fiber plug piece, and two end faces of the input optical fiber and the output optical fiber are in close contact.

2. According to the invention, through the matching of the stepped chuck and the sliding chuck which are provided with rubber materials, the elastic buffering effect on the optical fiber glass can be increased, so that the stepped chuck and the sliding chuck are inserted into the matching of the stepped splicing cavity formed on the optical fiber coupler provided by the invention, the connection of a stepped structure between the optical fiber coupler and the optical fiber plug can be realized, the protection effect on the optical fiber is increased, and the transmission between the optical fibers is more stable.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of a fiber optic coupler according to the present invention;

FIG. 2 is a cross-sectional view of a fiber optic coupler according to the present invention;

FIG. 3 is a perspective view of a fiber optic plug of the present invention;

FIG. 4 is an assembled view of the fiber optic coupler and fiber optic plug of the present invention;

FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 4;

FIG. 6 is a cross-sectional view of the invention of FIG. 4;

in the figure: the optical fiber connector comprises a fixed shell 1, a swing cavity 11, a plug hole 12, a connector 2, a limiting slot 21, a stepped plug cavity 22, a sliding guide groove 23, a protruding strip 24, an optical fiber conductor 3, a rotating column 4, a clamping pressing plate 5, a plug column 6, a rubber spring 7, a pushing plug board 8, a sliding plug cavity 81, a pressing strip 9, a limiting strip 10, a fixed plug 20, a stepped plug head 30, a sliding plug head 40, a sliding slot 401, a clamping plate 50, a plug clamping strip 60, a T-shaped limiting groove 601, a limiting clamping strip 70, a corrugated groove 701 and an electric contact 80.

Detailed Description

An optical fiber coupler and an optical fiber plug according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, an optical fiber coupler according to the present invention includes a fixed housing 1, a connector 2, and an optical fiber lead 3; a connector 2 is arranged in the fixed shell 1 in a sliding mode, and the end portion of the connector 2 is connected with an optical fiber lead 3; the side surfaces of the upper end and the lower end of the fixed shell 1 are provided with swing cavities 11, and clamping press plates 5 are respectively and rotatably arranged in the swing cavities 11 through rotating columns 4; the bottom end of the swinging cavity 11 is provided with a plug hole 12; a plurality of limiting slots 21 are uniformly formed in the upper end face and the lower end face of the connector 2, and the limiting slots 21 are aligned with the plug holes 12 in a sliding mode; the lower surface of one end of the clamping pressing plate 5 is fixedly provided with an inserting column 6, and the upper end surface of the clamping pressing plate 5 is connected with the upper wall of the swinging cavity 11 through a rubber spring 7; the inserting column 6 is inserted into the inserting hole 12 and the limiting slot 21 in a sliding manner; the other end of the clamping pressing plate 5 is positioned at the outer end part of the fixed shell 1; a stepped splicing cavity 22 is formed in the connector 2, and a stepped optical fiber plug is inserted into the stepped splicing cavity 22; two acting side walls of the connector 2 are provided with pushing insertion plates 8, and the side surfaces of the pushing insertion plates 8 are provided with limit stops; when the optical fiber coupler works, when an optical fiber plug connected to an optical fiber needs to be inserted into the connector 2 of the optical fiber coupler, if the position of the optical fiber coupler is narrow, an operator needs to adjust an optical fiber network for integral adjustment, and the optical fiber plug can be conveniently inserted into the optical fiber coupler; when the optical fiber coupler needs to be used, an operator adjusts the extending amount of the connector 2 according to the convenient degree of the mutual connection between the optical fiber plug and the optical fiber coupler; when the extension length of the connector 2 needs to be adjusted, an operator can press the end part of the clamping pressing plate 5 which is rotatably arranged on the fixed shell 1, the other end of the clamping pressing plate 5 can extrude the rubber spring 7, meanwhile, the inserting column 6 arranged on the bottom end face of the clamping pressing plate 5 can be separated from the limiting slot 21, and then the operator slowly pulls the pushing inserting plates 8 which are arranged on the two sides at a constant speed, so that the pushing inserting plates 8 can drive the connector 2 to extend out of the fixed shell 1, the length of the connector 2 outside the fixed shell 1 is adjusted, and the optical fiber plug is conveniently connected with the connector 2; after the length of the connector 2 is adjusted, an operator loosens the clamping pressing plate 5, the clamping pressing plate 5 can drive the inserting column 6 to be inserted into the next limiting slot 21 under the thrust of the rubber spring 7, and then the inserting column 6 which is slidably arranged on the upper surface and the lower surface of the fixed shell 1 can play a role in inserting and fixing the connector 2, so that the adjusted connector 2 is stably connected with an optical fiber plug, two end surfaces of an input optical fiber and an output optical fiber are in tight contact, and light energy emitted by the input optical fiber can be coupled into the output optical fiber to the maximum extent; a step splicing cavity 22 is formed in the connector 2, so that an optical fiber plug can be conveniently connected into the optical fiber coupler in a step splicing mode, and the optical fiber can be stably transmitted; most of the existing optical fiber couplers adopt a straight-through type plugging mode, when the optical fiber couplers are arranged at positions with large vibration amplitude, the phenomenon that optical fiber glass at the connection part of the optical fiber couplers and an optical fiber plug is broken is easily caused, and further stable output and input of optical fiber signals are influenced.

As an embodiment of the present invention, sliding insertion cavities 81 are formed in the pushing insertion plates 8 symmetrically arranged on both sides, and the sliding insertion cavities 81 are slidably provided with press-fit strips 9; the section of the pressing strip 9 is of an I-shaped structure, and the upper end part of the pressing strip 9 is fixed on the upper end surface of the clamping pressing plate 5; a limiting strip 10 is fixed on the bottom end face of the pressing strip 9, and the limiting strip 10 is slidably arranged in the sliding insertion cavity 81; when the length of the connector 2 needs to be adjusted, a worker can symmetrically press the pressing strips 9 arranged on the clamping pressing plate 5 with one hand, so that the pressing strips 9 can bear the pressure of the clamping pressing plate 5, the pressing area between the pressing force and the clamping pressing plate 5 is increased, the phenomenon that the end parts of the clamping pressing plate 5 are extruded and broken due to overlarge pressing force is effectively prevented, and the service life of the clamping pressing plate 5 is further influenced; meanwhile, the press strip 9 is arranged in the sliding splicing cavity 81 in a sliding mode, so that the press strip 9 can perform left-right limiting operation on the clamping pressing plate 5, the phenomenon that the clamping pressing plate 5 swings left and right in the swinging cavity 11 due to overlarge pressing force of an operator is effectively prevented, the splicing column 6 is further influenced to be stably and accurately clamped into the limiting slot 21, the phenomenon that the connection stability of the telescopic adjusting connector 2 is poor is caused, and the stable adjustment of the connector 2 is further influenced.

As an embodiment of the present invention, the upper and lower end surfaces of the connector 2 are provided with sliding guide grooves 23, and the upper end surface of the sliding guide groove 23 is provided with a protruding strip 24; a rubber spring 7 is fixed on the bottom end surface of the clamping pressing plate 5, and the rubber spring 7 is arranged in the sliding guide groove 23 in a sliding manner; when the clamping pressing plate 5 swings downwards during working, the rubber spring 7 arranged at the bottom end of the clamping pressing plate 5 can play a role of limiting and supporting the bottom end of the clamping pressing plate 5, so that the situation that when the pressing force of the outer end part of the clamping pressing plate 5 is too large, an operator needs to manually restore the clamping pressing plate 5 arranged at the outer end part of the solid shell to a tilting device, and the effect of inserting and fixing the connector 2 by the inserting column 6 on the clamping pressing plate 5 is influenced; meanwhile, the friction force between the bottom end part of the rubber spring 7 and the sliding guide groove 23 can be increased by the convex strips 24 arranged in the sliding guide groove 23, and the phenomenon that the rubber spring 7 is inclined when the compression force of the rubber spring 7 is too large is effectively prevented, so that the stable support of the rubber spring 7 on the clamping pressing plate 5 is influenced.

As shown in fig. 1-6, the optical fiber plug of the present invention is suitable for use with the optical fiber coupler; comprises a fixed plug 20, a step chuck 30, a sliding chuck 40 and an electric contact 80; a stepped chuck 30 is fixedly arranged at the end part of the fixed plug 20, and a sliding slot 401 is formed inside the stepped chuck 30 and the fixed plug 20; a sliding chuck 40 is arranged in the sliding slot 401 in a sliding mode through a rubber spring 7, and an electric contact head 80 is arranged in the sliding chuck 40 in a sliding mode; the optical fiber lead 3 is arranged in the electric contact 80; the stepped clamping head 30 and the sliding clamping head 40 are both made of rubber materials; clamping plates 50 are arranged on two sides of the fixed plug 20, and inserting clamping strips 60 are arranged at the end parts of the clamping plates 50; the inserting clamping strip 60 is connected with the sliding inserting cavities 81 arranged on the two sides of the connector 2 in a sliding clamping manner; the optical fiber plug and the optical fiber coupler are mutually matched for use; when the optical fiber plug of the present invention and the connector 2 of the optical fiber coupler of the present invention need to be connected with each other, an operator can adjust the length of the connector 2 of the optical fiber coupler of the present invention, and then insert the stepped chuck 30 and the sliding chuck 40 arranged at the end of the fixed plug 20 into the stepped splicing cavity 22, and as the stepped plug and the sliding chuck 40 are continuously inserted into the stepped splicing cavity 22, the extrusion force of the side wall of the stepped splicing cavity 22 will make the sliding chuck 40 contract into the sliding slot 401, so that the rubber spring 7 arranged in the sliding slot 401 is compressed, when the sliding chuck 40 contracts into the sliding slot 401, the electrical contact 80 arranged in the sliding chuck 40 will extend out from the sliding chuck 40, and further the optical fiber lead 3 arranged on the electrical contact 80 will be in contact communication with the optical fiber lead 3 arranged on the connector 2, and then the splicing clamping strips 60 arranged at the two sides of the fixed plug 20 will be extruded and slidingly inserted into the sliding splicing cavity 81, thereby stably connecting the optical fiber plug to the optical fiber coupler; the elastic buffering effect on the optical fiber glass can be increased by the matching of the stepped clamping head 30 and the sliding clamping head 40 which are made of rubber materials, so that the stepped clamping head 30 and the sliding clamping head 40 are inserted into the stepped splicing cavity 22 formed in the optical fiber coupler provided by the invention to be matched, the connection of a stepped structure between the optical fiber coupler and an optical fiber plug can be realized, the protection effect on the optical fiber glass is increased, and the transmission between optical fibers is more stable.

As an embodiment of the present invention, the upper and lower ends of the insertion clamping strip 60 are both provided with T-shaped limiting grooves 601, and the T-shaped limiting grooves 601 are slidably inserted into the sliding insertion cavity 81 to form a limiting strip 10; the depth of the T-shaped limiting groove 601 is greater than the thickness of the limiting strip 10, and the upper side wall of the T-shaped limiting groove 601 is provided with corrugated bulges; when the optical fiber plug is connected to the optical fiber coupler, an operator slowly presses the pressing strip 9 downwards, so that the distance between the limiting strip 10 arranged at the bottom end of the pressing strip 9 and the sliding plugging cavity 81 can be increased; then when an operator connects the optical fiber plug to the optical fiber coupler, the splicing clamping strips 60 arranged on the two sides of the fixed plug 20 can be slidably inserted into the sliding splicing cavity 81, meanwhile, the limiting strips 10 arranged in the sliding splicing cavity 81 can be slidably inserted into the T-shaped limiting grooves 601, after the fixed plug 20 is completely contacted with the end part of the connector 2, the operator loosens the pressing strips 9, the pressing strips 9 can move upwards under the thrust of the rubber spring 7, and the limiting strips 10 arranged at the bottom ends of the two sides of the pressure strips can play a splicing clamping effect on the splicing clamping strips 60, so that the stable connection effect between the optical fiber plug and the adjustable optical fiber coupler is improved; the effect that the existing optical fiber plug is difficult to realize stable connection due to the movably arranged connector 2 on the optical fiber coupler is effectively prevented; meanwhile, the T-shaped limiting groove 601 can play a limiting sliding effect on the limiting strip 10, and can play a pressure supporting effect on the pressing strip 9 and the clamping pressing plate 5, so that the phenomenon that the splicing column 6 is separated from the limiting slot 21 when the clamping pressing plate 5 arranged on the fixed shell 1 moves towards the upper surface and the lower surface of the connector 2 under the external extrusion force when the optical fiber plug is connected with the optical fiber coupler is effectively prevented, the firmness of the connector 2 and the fixed shell 1 is further influenced, and the phenomenon that the optical fiber plug falls off is caused.

As an embodiment of the present invention, a limiting clamping strip 70 is disposed on one end surface of the fixed plug 20, and the limiting clamping strip 70 is in mutual sliding insertion fit with the sliding guide grooves 23 formed on the upper and lower end surfaces of the connector 2; a corrugated groove 701 is formed in the bottom end face of the limiting clamping strip 70, and a protruding strip 24 arranged in the sliding guide groove 23 is clamped in the corrugated groove 701; during operation, when fixed plug 20 laminated the side of connector 2, fixed plug 20 was last to be set up spacing card strip 70 can insert in the sliding guide groove 23, and the ripple recess 701 that spacing dop bottom face set up simultaneously can with the mutual block contact of the protruding strip 24 that sets up on the sliding guide groove 23, and then improved the stable connection effect between fixed plug 20 and the connector 2, improved the firm connection of stability between optical fiber plug and the optical fiber coupler simultaneously.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and 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 therefore, should not be taken as limiting the scope of the present invention.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. An optical fiber coupler, characterized by: comprises a fixed shell (1), a connector (2) and an optical fiber conductor (3); the fixed shell (1) is internally provided with a connector (2) in a sliding manner, and the end part of the connector (2) is connected with an optical fiber conductor (3); the side surfaces of the upper end and the lower end of the fixed shell (1) are provided with swing cavities (11), and clamping press plates (5) are respectively and rotatably arranged in the swing cavities (11) through rotating columns (4); the bottom end of the swing cavity (11) is provided with a jack (12); a plurality of limiting slots (21) are uniformly formed in the upper end face and the lower end face of the connector (2), and the limiting slots (21) are aligned with the plug-in holes (12) in a sliding mode; the lower surface of one end of the clamping pressing plate (5) is fixedly provided with an inserting column (6), and the upper end surface of the clamping pressing plate (5) is connected with the upper wall of the swinging cavity (11) through a rubber spring (7); the inserting column (6) is inserted into the inserting hole (12) and the limiting slot (21) in a sliding manner; the other end of the clamping pressing plate (5) is positioned at the outer end part of the fixed shell (1); a stepped splicing cavity (22) is formed in the connector (2), and a stepped optical fiber plug is spliced in the stepped splicing cavity (22); the effect both sides wall of connector (2) all is provided with promotes picture peg (8), and promotes picture peg (8) side and be provided with limit stop.

2. A fiber optic coupler according to claim 1, wherein: sliding inserting cavities (81) are formed in the pushing inserting plates (8) which are symmetrically arranged on two sides, and pressing strips (9) are arranged in the sliding inserting cavities (81) in a sliding mode; the section of the pressing strip (9) is of an I-shaped structure, and the upper end part of the pressing strip (9) is fixed on the upper end face of the clamping pressing plate (5); the bottom end face of the pressing strip (9) is fixed with a limiting strip (10), and the limiting strip (10) is arranged in the sliding insertion cavity (81) in a sliding mode.

3. A fiber optic coupler according to claim 2, wherein: the upper end face and the lower end face of the connector (2) are provided with sliding guide grooves (23), and the upper end face of each sliding guide groove (23) is provided with a protruding strip (24); the bottom end face of the clamping pressing plate (5) is fixed with a rubber spring (7), and the rubber spring (7) is arranged in the sliding guide groove (23) in a sliding mode.

4. An optical fiber plug, comprising: the optical fiber plug is suitable for the use of the optical fiber coupler of any one of the claims 1-3; comprises a fixed plug (20), a step chuck (30), a sliding chuck (40) and an electric contact head (80); a stepped clamping head (30) is fixedly arranged at the end part of the fixed plug (20), and a sliding slot (401) is formed in the stepped clamping head (30) and the fixed plug (20); a sliding chuck (40) is arranged in the sliding slot (401) in a sliding mode through a rubber spring (7), and an electric contact head (80) is arranged in the sliding chuck (40) in a sliding mode; an optical fiber lead (3) is arranged in the electric contact head (80); the step chuck (30) and the sliding chuck (40) are both made of rubber materials; clamping plates (50) are arranged on two sides of the fixed plug (20), and inserting clamping strips (60) are arranged at the end parts of the clamping plates (50); the inserting clamping strip (60) is connected with sliding inserting cavities (81) arranged on two sides of the connector (2) in a sliding clamping mode.

5. A fiber optic plug according to claim 4, wherein: the upper end and the lower end of the inserting clamping strip (60) are both provided with T-shaped limiting grooves (601), and the T-shaped limiting grooves (601) are in sliding inserting fit with the sliding inserting cavity (81) in which limiting strips (10) are arranged in a sliding manner; the depth of the T-shaped limiting groove (601) is larger than the thickness of the limiting strip (10), and the upper side wall of the T-shaped limiting groove (601) is provided with corrugated bulges.

6. A fiber optic plug according to claim 5, wherein: a limiting clamping strip (70) is arranged on one end face of the fixed plug (20), and the limiting clamping strip (70) is in mutual sliding insertion fit with sliding guide grooves (23) formed in the upper end face and the lower end face of the connector (2); the bottom end face of the limiting clamping strip (70) is provided with a corrugated groove (701), and a protruding strip (24) arranged in the sliding guide groove (23) is clamped in the corrugated groove (701).