CN115437075B - Optical fiber connection box and optical fiber connection box assembly - Google Patents

Abstract

The present application relates to a fiber optic connection box and fiber optic connection box assembly, comprising: the box body, it is equipped with and holds the chamber, the apron, it is close to one side that holds the chamber on integrated into one piece by being located the connecting body that holds the intracavity, connecting body is equipped with the butt joint passageway and is located the fixed knot of butt joint passageway, make when the connector inserts, fixed knot takes place deformation, when the position of the first spacing groove of connector matches with the position of fixed knot, fixed knot kick-backs, and with first spacing groove block with connecting body and connector are fixed, fixed knot is used for cooperating with the shell body of connector, in order to restrict fixed knot and deviate from first spacing groove. The optical fiber connection box provided by the application weakens the concept of the adapter, the connecting main body which can be matched with the connector to realize connection is directly arranged on the inner side of the cover plate of the box body, the structure in the box body is greatly simplified, the assembly time is greatly reduced, in addition, the quick butt joint locking with the connector can be realized, and the centering difficulty during butt joint is simplified.

Description

Optical fiber connection box and optical fiber connection box assembly

Technical Field

The application relates to the technical field of optical fiber communication, in particular to an optical fiber connection box and an optical fiber connection box assembly.

Background

With the large-scale deployment of FTTH (Fiber To The Home ), the construction cost is reduced, the construction technical requirements are lowered, and the application of pre-connection products for simplifying the construction difficulty is wider and wider.

Currently, most connectors and adapters are industry standard connectors and adapters that are designed to address fiber optic connections in the room or on a protective box. However, the connectors, boxes, and adapter products that are available on the market are complex to assemble, take a lot of time to assemble, have a large number of adapter parts, and, in addition to requiring a large amount of assembly time, have resulted in a large difficulty in aligning the connectors and adapters.

Disclosure of Invention

The embodiment of the application provides an optical fiber connection box and an optical fiber connection box assembly, which are used for solving the problems that in the related art, more time is needed to be spent when an adapter is installed and the difficulty is higher when the adapter is connected with a connector for centering due to more parts.

In a first aspect, there is provided a fiber optic connection box comprising:

the box body is provided with a containing cavity, and the containing cavity is provided with an opening;

the cover plate is plugged on the opening of the accommodating cavity, a connecting main body is integrally formed on one side, close to the accommodating cavity, of the cover plate, and the connecting main body is provided with a butt joint channel and a fixing buckle positioned in the butt joint channel;

when the connector is inserted into the butting channel, the fixing buckle deforms to move out of the butting channel, when the position of the first limit groove inserted into the connector is matched with the position of the fixing buckle, the fixing buckle rebounds and is clamped with the first limit groove so as to fix the connecting main body with the connector, and meanwhile, the fixing buckle is matched with the outer shell of the connector so as to limit the fixing buckle to be separated from the first limit groove.

In some embodiments, the connecting body is provided with a first cantilever, one end of the first cantilever is connected with the connecting body, and the other end of the first cantilever is provided with the fixing buckle.

In some embodiments, a first avoidance groove is formed on one side of the fixing buckle, which faces away from the docking channel;

when the fixed knot cooperates with the first limit groove, the first avoiding groove is used for providing a first avoiding space for the outer shell, so that the outer shell at least partially stretches into the first avoiding groove after rebounding, and the fixed knot is pressed and held.

In some embodiments, the cover plate comprises a front cover and a rear cover which are arranged from outside to inside, and a sealing gasket is clamped between the front cover and the rear cover;

the front cover is blocked at the opening of the accommodating cavity, and is provided with a first butt-joint duct for inserting the connector;

the rear cover is integrally formed with the connecting main body, and is provided with a second butt joint duct for inserting the connector;

and a third butt joint hole channel which is used for being inserted into the connector and connected with the connector in a sealing way is formed in the sealing gasket.

In some embodiments, the second butt-joint duct is far away from the orifice of the sealing gasket, and is integrally formed with a reinforcing rib, the reinforcing rib protrudes out of the surface of the rear cover along the thickness direction of the rear cover, and at least part of the inner wall of the reinforcing rib is connected with the outer wall of the connecting body.

In some embodiments, a first docking portion is provided within the docking channel, the first docking portion having a docking cavity;

the connecting body is provided with a connecting hole and an optical fiber connector, the optical fiber connector part extends into one end of the butt joint channel away from the cover plate and is matched with the first butt joint part, and the optical fiber connector is buckled on the connecting hole.

In some embodiments, the optical fiber connector includes a connector body and a first ferrule;

the connector body is provided with a containing cavity, the containing cavity penetrates through the connector body along the axis direction of the connector body and is communicated with the butting cavity, a second limit groove is arranged in the containing cavity, the connector body is also provided with a mounting opening, and the mounting opening penetrates through at least one side of the connector body along the radial direction of the connector body;

the first lock pin is arranged in the accommodating cavity from the mounting opening and at least partially stretches into the butt joint cavity, the first lock pin is sleeved with a first spring, and the first spring and the first lock pin are at least partially accommodated in the second limiting groove so as to limit the axial position of the first lock pin.

In some embodiments, the first ferrule is provided with a first positioning portion, and the first positioning portion includes a positioning groove;

the connector main body is provided with a second positioning part corresponding to the first positioning part, the second positioning part comprises a second cantilever, and the second cantilever protrudes into the positioning groove and is matched with the positioning groove so as to limit the rotation of the first ferrule.

In some embodiments, the connector main body is further provided with a boss and at least two limiting arms, and the boss and the limiting arms enclose the second limiting groove;

the limiting arms are respectively located on two opposite sides of the first lock pin, the limiting arms form a limiting cavity in a surrounding mode, and the first lock pin is at least partially accommodated in the limiting cavity so as to limit radial displacement of the first lock pin.

In some embodiments, one end of the connector body is provided with a second butt joint part at least partially sleeved on the first butt joint part, a gap is formed between the second butt joint part and the limiting arm, a second avoidance space is formed on one side of the connector body at the second butt joint part, and the second avoidance space is radially arranged on the outer side of the limiting arm.

In some embodiments, the connector body is provided with a fastening arm, and the fastening arm extends into the docking channel and is fastened and fixed with the connecting hole;

the connecting main body is provided with a second avoidance groove which is used for accommodating part of the buckling arm.

In a second aspect, there is provided a fiber optic connection box assembly comprising:

a fiber optic connection box as described in any one of the above;

the connector comprises a connector main body and an outer shell, wherein the connector main body is provided with a first limit groove, and the outer shell is sleeved on the connector main body and is provided with an elastic piece with the connector main body;

when the connector main body is inserted into the butt joint channel, the outer shell body abuts against the deformed fixing buckle, the elastic piece is compressed, when the first limiting groove is clamped with the fixing buckle, the fixing buckle rebounds and resets to release the limit of the outer shell body, and the elastic piece is used for driving the outer shell body to reset to press and hold the clamping part.

In some embodiments, the connector further comprises a dust cap having internal threads;

the outer shell is provided with an external thread matched with the internal thread, the external thread is provided with at least two thread starting points, and the tail end of the external thread is provided with a stop part.

In some embodiments, the internal thread has a tooth thickness that is greater than the tooth thickness of the external thread.

In some embodiments, the inner surface of the dust cap has a sealing protrusion that is in an interference fit with the outer wall of the outer housing to effect a seal.

The beneficial effects that technical scheme that this application provided brought include:

the embodiment of the application provides an optical fiber connection box, integrated into one piece has the connecting body that is located the box body on the one side that the apron is close to holding the chamber, connecting body is equipped with docking channel and is located the fixed knot of docking channel, make when the connector inserts docking channel, fixed knot takes place deformation in order to shift out docking channel, when the position of inserting the first spacing groove of connector matches with the position of fixed knot, fixed knot resilience, and with first spacing groove block is fixed with connecting body and connector, fixed knot is used for cooperating with the shell body of connector, so as to restrict fixed knot and deviate from first spacing groove, therefore, the concept of adapter has been weakened to this optical fiber connection box, direct connecting body that can be realized being connected with the connector matching in the apron inboard of box body has been carried out great simplification, the time of assembly has been significantly reduced, in addition, also can realize the quick butt joint locking with the connector, the degree of difficulty of centering when having simplified the butt joint.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a fiber optic connection box provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a connector body of a fiber optic connection box provided in an embodiment of the present application;

FIG. 3 is a schematic view of a rear cover of an optical fiber connection box according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a fiber optic connection box according to an embodiment of the present disclosure when a connector has not been inserted therein;

FIG. 5 is a cross-sectional view of an embodiment of the present application showing a fiber optic connection box inserted into a connector and locked;

FIG. 6 is a cross-sectional view of an embodiment of the present disclosure when an optical fiber connection box is unlocked from a connector;

FIG. 7 is an exploded view of an optical fiber connector of an optical fiber connection box according to an embodiment of the present disclosure;

FIG. 8 is a schematic combination diagram of an optical fiber connector of an optical fiber connection box according to an embodiment of the present disclosure;

FIG. 9 is a schematic top view of an optical fiber connector of an optical fiber connection box according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an optical fiber connector of an optical fiber connection box according to an embodiment of the present disclosure from front to back;

FIG. 11 is a schematic view of a fiber connector of a fiber optic connection box according to an embodiment of the present disclosure;

fig. 12 is a schematic structural view of a main body of an optical fiber connector of an optical fiber connection box according to an embodiment of the present disclosure;

fig. 13 is a schematic structural view of a connector cover of an optical fiber connection box assembly provided in an embodiment of the present application, provided with a dust cap.

Fig. 14 is a schematic view of a connector of an optical fiber connection box assembly according to an embodiment of the present disclosure when separated from a dust cap.

In the figure:

1-box body, 10-accommodating cavity, 11-opening, 12-dustproof plug and 13-tray;

2-cover plate, 20-connecting main body, 200-butt joint channel, 201-fixing buckle, 202-first avoidance groove, 203-first butt joint part, 204-butt joint cavity, 205-second avoidance groove, 206-first cantilever, 21-front cover, 210-first butt joint channel, 22-rear cover, 220-second butt joint channel, 221-reinforcing rib, 23-sealing gasket, 230-third butt joint channel and 24-connecting hole;

the optical fiber connector comprises a 3-optical fiber connector body, a 30-connector body, a 300-accommodating cavity, 3000-a second limit groove, 301-a mounting port, 31-a first ferrule, 310-a first positioning part, 32-a first spring, 33-a second positioning part, 34-a limit arm, 35-a boss, 36-a second butt joint part, 37-a second avoidance space and 38-a buckling arm;

4-connector, 40-connector body, 400-first limit groove, 41-shell, 410-external screw thread, 411-stop, 42-elastic piece, 43-dust cap.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The embodiment of the application provides an optical fiber connection box, which can solve the problems that in the related art, because parts are more, the adapter needs to spend more time in installation and the difficulty is higher in centering when being connected with a connector.

Referring to fig. 1 and 2, the optical fiber connection box comprises a box body 1 and a cover plate 2, wherein the box body 1 is provided with a containing cavity 10, the containing cavity 10 is provided with an opening 11, the box body 1 is an injection molding part with one end provided with the opening 11 and the other four sides closed, the box body 1 is mainly used for protecting optical fibers, optical fiber connectors and other structures matched with the connector 4 in the containing cavity 10 of the box body 1, the box body 1 can be in various shapes, such as square, round or other suitable shapes, a tray 13 is further arranged in the box body 1, and the tray 13 is in interference fit with a rear cover 22; the cover plate 2 is plugged on the opening 11 of the accommodating cavity 10, the periphery of the cover plate is in sealing connection with the box body 1, so that sediment and rainwater in the external environment are prevented from entering the box body 1 from the connection part to affect the structure, a connecting main body 20 is integrally formed on one side of the cover plate 2, which is close to the accommodating cavity 10, the connecting main body 20 is provided with a butt joint channel 200 and a fixing buckle 201 positioned in the butt joint channel 200, the number of the connecting main bodies 20 can be one or more, but from the practical use and environment, the number of the connecting main bodies 20 is preferably more, and the connecting main bodies 20 are distributed on the inner side of the cover plate 2 according to an array; when the connector 4 is inserted into the docking channel 200, the fixing buckle 201 is deformed to move out of the docking channel 200, and when the position of the first limit groove 400 inserted into the connector 4 is matched with the position of the fixing buckle 201, the fixing buckle 201 rebounds and is engaged with the first limit groove 400 to fix the connecting body 20 with the connector 4, and meanwhile, the fixing buckle 201 is used for being matched with the outer shell 41 of the connector 4 to limit the fixing buckle 201 from being separated from the first limit groove 400.

This fiber connection box is through being close to the connecting body 20 of integrated into one piece and connector 4 butt joint on the one side of holding chamber 10 at apron 2, when connector 4 inserts butt joint passageway 200, the fixed knot 201 on the connecting body 20 can with the first spacing groove 400 block of connector 4 to realize that connecting body 20 is fixed with connector 4, whole connection process is very fast, the operation basically does not have the degree of difficulty, the operation precision to the operator does not have too high requirement yet, and connect the back fixed knot 201 still be used for with the shell 41 cooperation of connector 4, in order to restrict fixed knot 201 and deviate from first spacing groove 400, the steadiness of connection has still been guaranteed on the basis of realizing quick connection. Therefore, this fiber optic connection box has weakened the concept of adapter, directly set up the connecting body 20 that can match the realization connection with connector 4 in the apron 2 inboard of box body 1, the structure in the box body 1 has carried out great simplification, the time of assembly when having significantly reduced box body 1 preparation, can realize with the quick butt joint locking of connector 4, the degree of difficulty of centering when having simplified the butt joint, in addition, after the junction shifts to box body 1 for connection structure is prevented from the erosion of silt and ultraviolet etc. in the environment, when guaranteeing connection stability, life has been prolonged.

In some embodiments, referring to fig. 2 and 4, the connecting body 20 is provided with a first cantilever 206, one end of the first cantilever 206 is connected with the connecting body 20, the other end is provided with a fixing buckle 201, the first cantilever 206 may be two or more, and symmetrically arranged along the radial direction of the docking channel 200, the outer wall of the first cantilever 206 may be flush with the outer wall of the connecting body 20 or may protrude from the outer wall of the connecting body 20, in this embodiment, the first cantilever 206 is preferably two and symmetrically arranged on the connecting body 20, the end of the first cantilever 206 is integrally formed with the connecting body 20, and the outer wall of the first cantilever 206 is flush with the outer wall of the connecting body 20, when the connector 4 is inserted into the docking channel 200, the connector 4 presses the adapter, and the first cantilever 206 is deformed.

In some embodiments, see fig. 4 and fig. 6, a first avoidance groove 202 is provided on a side of the fixing buckle 201 away from the docking channel 200, the first avoidance groove 202 is an open groove, the first avoidance groove 202 may be provided on a side of the fixing buckle 201 away from the docking channel 200, and may also be provided inside a side of the fixing buckle 201 away from the docking channel 200, in this embodiment, the first avoidance groove 202 is provided on a side of the fixing buckle 201 away from the docking channel 200, only the groove bottom, and other surfaces are open ends, before the fixing buckle 201 is matched with the first limit groove 400, since the fixing buckle 201 expands radially outwards under the extrusion of the connector 4, in the process of continuously inserting the connector 4, the fixing buckle 201 abuts against the outer shell 41, so as to limit the outer shell 41 to continue moving along with the connector 4, and after the fixing buckle 201 is matched with the first limit groove 400, the outer shell 41 is reset, the outer shell 41 loses the limit of the rebound towards the insertion direction, the first avoidance groove 202 is used for providing a first avoidance space for the outer shell 41, so that the rebound part of the outer shell 41 extends into the first limit groove 202, and the first avoidance groove is prevented from being pushed out of the first limit groove 400, and the stability is guaranteed, and the connection stability is guaranteed.

In some embodiments, referring to fig. 1 and 3, the cover plate 2 includes a front cover 21 and a rear cover 22 that are disposed from outside to inside, a sealing gasket 23 is sandwiched between the front cover 21 and the rear cover 22, the front cover 21 is plugged at the opening 11 of the accommodating cavity 10 and is in hot-melt sealing connection with the box body 1, a first butt-joint duct 210 for inserting the connector 4 is disposed on the front cover 21, a connecting main body 20 is integrally formed on the rear cover 22, a second butt-joint duct 220 for inserting the connector 4 is disposed on the rear cover 22, and a third butt-joint duct 230 for inserting the connector 4 and being in sealing connection with the connector 4 is disposed on the sealing gasket 23, so that the sealing gasket 23 ensures the tightness of the front cover 21 and the rear cover 22 when the connector 4 is penetrated, the front cover 21 and the sealing gasket 23 are jointly used for sealing structures located in the box body 1, thereby preventing sediment and rainwater in the external environment from entering the box body 1 from affecting the structure, ensuring the environmental stability of most connecting structures, and prolonging the service life. When not in use, the first butt-joint hole 210 of the front cover 21 is provided with a dustproof plug 12 in a sealing manner.

In some embodiments, referring to fig. 2, the third mating hole 230 is provided with an annular sealing rib for sealing the connector 4, the annular sealing rib protrudes from the surface of the sealing pad 23 along the thickness direction of the sealing pad 23 and forms a seal with both the rear cover 22 and the front cover 21, wherein the annular sealing rib may protrude from the surfaces of the sealing pad 23 on both sides or one side along the thickness direction of the sealing pad 23, so as to form a seal with both the rear cover 22 and the front cover 21 while sealing the inserted connector 4.

In some embodiments, referring to fig. 2 and 3, the second butt-joint hole 220 is formed integrally with a reinforcing rib 221 away from the hole of the sealing gasket 23, the reinforcing rib 221 protrudes from the surface of the rear cover 22 along the thickness direction of the rear cover 22, the reinforcing rib 221 may be in an integral closed structure or an open non-closed structure, the reinforcing rib 221 may be in a circular shape or a square shape, or other shapes, in this embodiment, the reinforcing rib 221 is in an integral closed structure and is in a ring shape, and at least part of the inner wall of the reinforcing rib 221 is connected with the outer wall of the connecting body 20, so as to play a role of structural reinforcement, and ensure the integral structural strength of the rear cover 22 and the connection strength of the connecting body 20 and the rear cover 22.

In some embodiments, referring to fig. 4 to 6, a first docking portion 203 is provided in the docking channel 200, the first docking portion 203 is provided with a docking cavity 204, the first docking portion 203 may be cylindrical in shape and may be square, the first docking portion 203 is provided with a docking cavity 204 with an axis coincident with the axis of the docking channel 200, a ceramic sleeve is accommodated in the docking cavity 204, the first docking portion 203 is provided with a plurality of connection arms, and the number of the connection arms may be one or more. The connecting body 20 is provided with a connecting hole 24 and an optical fiber connector 3, the connecting hole 24 is used for buckling the optical fiber connector 3, the number of the connecting holes 24 can be two, the connecting body 20 is symmetrically arranged, the optical fiber connector 3 partially stretches into one end of the butt joint channel 200 far away from the cover plate 2 and is matched with the first butt joint part 203, and at the moment, the optical fiber connector 3 is buckled on the connecting hole 24.

In some embodiments, referring to fig. 1 and 7, the optical fiber connector 3 includes a connector main body 30 and a first ferrule 31, where the connector main body 30 is provided with a receiving cavity 300, and the receiving cavity 300 penetrates through the connector main body 30 along an axis direction of the connector main body 30, where the connector main body 30 may have a front end surface and a rear end surface, the receiving cavity 300 penetrates through the front end surface and penetrates through the rear end surface in a forward direction so as to connect an optical fiber at the rear end, and the front end realizes butt joint with the first butt joint portion 203, and a second limiting groove 3000 is provided in the receiving cavity 300, where the second limiting groove 3000 may perform a limiting function, and a width of the second limiting groove 3000 in a radial direction may be greater than a width of other portions of the receiving cavity 300 or may be smaller than a width of other portions of the receiving cavity 300; the connector body 30 further has a mounting opening 301, and the mounting opening 301 penetrates at least one side of the connector body 30 in the radial direction of the connector body 30, that is, may penetrate the top of the connector body 30 in the radial direction, may penetrate both the top and the bottom, and may penetrate both the left and right sides of the connector body 30; the first ferrule 31 may be mounted in the accommodating cavity 300 from the mounting opening 301, that is, the first ferrule 31 may enter the accommodating cavity 300 from the mounting opening 301 in a radial direction when being mounted, and the first ferrule 31 is sleeved with the first spring 32, when being assembled, the first ferrule 31 and the first spring 32 may be assembled together, then the first ferrule 31 and the first spring 32 may be assembled into the connector body 30 together, when the first ferrule 31 is mounted in the accommodating cavity 300, the first spring 32 and the first ferrule 31 may be at least partially accommodated in the second limiting groove 3000 to limit an axial position of the first ferrule 31, so that the first ferrule 31 may not be axially separated from the accommodating cavity 300, and the first ferrule 31 may not protrude forward for a long time under an elastic force of the first spring 32.

In this embodiment, referring to fig. 8, as the connector main body 30 is provided with the mounting opening 301, the first ferrule 31 and the first spring 32 can be radially mounted from the mounting opening 301 into the accommodating cavity 300, so as to be mounted in the connector main body 30, and the second limiting groove 3000 of the connector main body 30 can limit the axial movement amount of the first ferrule 31, so that the first ferrule 31 can move in a suitable range, and the first ferrule 31 can be connected with an optical fiber, so that the requisite features of the connector are integrated, the use requirement of the optical connector is met, the optical fiber connector 3 can realize the detachable connection of the optical fiber and the optical fiber, has fewer parts, simple structure and small volume, thereby occupying small space, reducing the material cost and the assembly cost, and the same as the connecting main body 20 described above, the structure is simplified.

In some embodiments, referring to fig. 7 to fig. 9, the first ferrule 31 is provided with a first positioning portion 310, where the first positioning portion 310 includes positioning grooves, that is, positioning grooves may be provided on a surface of the first ferrule 31, and one or more positioning grooves may be provided, in this embodiment, two positioning grooves are preferably provided and distributed on opposite sides of the first ferrule 31; the connector body 30 is provided with a second positioning portion 33 corresponding to the first positioning portion 310, that is, the first positioning portion 310 corresponds to the second positioning portion 33, and the second positioning portion 33 and the first positioning portion 310 are mutually matched to limit rotation of the first ferrule 31, the second positioning portion 33 includes second cantilevers, the number of the second cantilevers may correspond to the number of the positioning grooves, in this embodiment, two second cantilevers are preferably provided, and each second cantilever protrudes into the corresponding positioning groove. In this embodiment, the first positioning portion 310 is set as a positioning groove, and the second positioning portion 33 is set as a cantilever-shaped second cantilever, so that the second cantilever can be opened during the process of installing the first ferrule 31 into the accommodating cavity 300, and when the first ferrule 31 enters the accommodating cavity 300, the second cantilever protrudes into the positioning groove to position and limit the rotation of the first ferrule 31, so that the installation of the first ferrule 31 is facilitated.

In some embodiments, referring to fig. 7 and fig. 10 to fig. 12, the connector main body 30 is further provided with a boss 35 and at least two limiting arms 34, the boss 35 and the limiting arms 34 enclose a second limiting groove 3000, the limiting arms 34 may be disposed in front of the second positioning portion 33 or may be disposed behind the second positioning portion 33, in this embodiment, the limiting arms 34 are preferably disposed in front of the second positioning portion 33, and the number of the limiting arms 34 may be two or more; the at least two limiting arms 34 are respectively located at two opposite sides of the first ferrule 31, and the at least two limiting arms 34 enclose a limiting cavity, wherein the limiting cavity may be circular or square, in this embodiment, the limiting cavity is preferably configured to be circular matching with the shape of the outer contour of the first ferrule 31, and the first ferrule 31 is at least partially accommodated in the limiting cavity to limit the radial displacement of the first ferrule 31. The first lock pin 31 is held by the at least two limiting arms 34 from two opposite sides of the first lock pin 31, a small gap is reserved between the first lock pin 31 and the inner wall of the limiting arm 34, the limiting cavity can limit the displacement of the first lock pin 31 in the left-right direction and the displacement of the first lock pin 31 in the up-down direction, namely, the distance between the two limiting arms 34 at the top of the limiting cavity is smaller than the diameter of the first lock pin 31 at the top of the limiting cavity, so that the first lock pin 31 cannot deviate from the top of the limiting cavity, and the top of the limiting cavity can stop the first lock pin 31. In this embodiment, the limiting arm 34 disposed on the connector main body 30 is utilized to enclose the second limiting groove 3000, and the connector main body 30 does not need to be separately provided with a boss to form the second limiting groove 3000 with the boss behind the first spring 32, so that multiple uses of the limiting arm 34 are realized, and the setting of components is reduced.

In some embodiments, as shown in fig. 12, one end of the connector main body 30 is provided with a second docking portion 36 at least partially sleeved on the first docking portion 203, and a gap is formed between the second docking portion 36 and the limiting arm 34, so that the limiting arm 34 is in a cantilever state, the elasticity of the limiting arm 34 can be improved, and a second avoidance space 37 is formed at one side of the connector main body 30 at the second docking portion 36. In this embodiment, the second avoidance space 37 is located at the rear of the second docking portion 36, and the second avoidance space 37 is radially disposed at the outer side of the limiting arm 34, so that a deformed space is provided for the limiting arm 34 through the arrangement of the second avoidance space 37, when the first ferrule 31 is installed into the accommodating cavity 300, the first ferrule 31 can prop open the limiting arm 34, and at this time, the limiting arm 34 can expand outwards into the second avoidance space 37.

In some embodiments, as shown in fig. 7 and 12, the connector body 30 is provided with a retaining arm 38, where an integral retaining arm 38 may be provided, or two independent retaining arms 38 may be provided, or a plurality of retaining arms 38 may be provided, in this embodiment, it is preferable to provide a retaining arm 38 on opposite sides of the connector body 30, where the retaining arms 38 are used to extend into the docking channel 200 and be retained with the connection hole 24; the second avoidance groove 205 is formed in the connecting body 20, the second avoidance groove 205 is used for accommodating part of the buckling and holding arms 38, in the process of butting the connecting body 30 and the connecting body 20, the two buckling and holding arms 38 can be pinched, the two buckling and holding arms 38 move towards the direction close to each other, the connecting body 30 is convenient to insert into the butting cavity 204 of the first butting portion 203, after the connecting body 30 is inserted to a preset position, the connecting body is buckled and fixed with the connecting hole 24, at the moment, the two buckling and holding arms 38 can be loosened, and the connecting body 30 and the connecting body 20 are connected.

The application also provides an optical fiber connection box assembly, see fig. 1, fig. 5 and fig. 6, this optical fiber connection box assembly includes the optical fiber connection box among any of the above-mentioned embodiments, still include connector 4, connector 4 mainly includes connector main part 40 and shell 41, connector main part 40 is equipped with first spacing groove 400, connector main part 40 is located to shell 41 cover, and be equipped with elastic component 42 between with connector main part 40, when connector main part 40 inserts docking channel 200, shell 41 supports and holds in the fixed knot 201 after deformation, compress elastic component 42, when first spacing groove 400 and fixed knot 201 block, fixed knot 201 rebound resets in order to relieve the spacing of shell 41, elastic component 42 is used for driving shell 41 and resets, in order to hold the block department pressure.

In this embodiment, when the connector body 40 is inserted into the docking channel 200 and the first limiting groove 400 is engaged with and fixed to the fixing buckle 201, the outer housing 41 is at least partially pressed against the fixing buckle 201, and at this time, a part of the outer housing 41 is located in the box 1, a part of the outer housing 41 is located outside the box 1, and a sealing connection is formed between the outer housing 41 and the sealing pad 23. When connecting the connector 4 and the case 1, the operator holds the tail sheath of the connector 4, inserts the docking channel 200, and can automatically lock when inserted into a certain position, compared with the previous structure, since the outer shell 41 needs to enter the docking channel 200, the outer shell with larger size is omitted, the structure of the connector 4 is simplified, the size can be made smaller, the operation space outside the case 1 is more abundant, and the operation is convenient. When the connector is unlocked, the connector 4 can be directly pulled out from the connecting main body 20 by directly pulling the pull rope structure which is arranged outside the box body 1 and connected with the outer shell 41, so that the connector is separated.

In some embodiments, referring to fig. 13 and 14, the connector 4 further includes a dust cap 43, where the dust cap 43 may be used to cover one end of the connector body 40 for dust and water prevention, the dust cap 43 may have an internal thread, the outer housing 41 has an external thread 410 matching with the internal thread, and the external thread 410 has at least two thread starting points, that is, the external thread 410 may include two thread starting points or more than two number of thread starting points, and when there are N thread starting points in a section, the distribution angle of each thread starting point is 360 °/N, so configured that each thread starting point may be designed with a relatively large lead, so that the number of turns of each thread starting point is reduced in a certain length region, and thus the number of turns of the dust cap 43 when screwing and locking with the outer housing 41 may be reduced, and the installation time is shortened. Meanwhile, a stop part 411 is arranged at the tail end of the external thread 410, when the front end of the internal thread rotates to contact with the stop part 411, the front end of the internal thread can not rotate any further, and an operator can be prompted to lock at the moment without continuing to screw

In some embodiments, the internal threads have a tooth thickness greater than the external threads 410, i.e., the threads provided on the dust cap 43 have a tooth thickness that is relatively thick, which may enhance the strength of the dust cap 43 in the case of a thinner dust cap 43. Meanwhile, as the sealing between the dust cap 43 and the outer shell 41 is realized by radial expansion deformation of the dust cap 43, the material of the dust cap 43 is softer than that of the outer shell 41, so that the tooth thickness of the internal thread design is increased to improve the strength of thread matching, and the locking force is prevented from being reduced due to insufficient thread strength.

In some embodiments, the inner surface of the dust cap 43 has a sealing protrusion that is an interference fit with the outer wall of the outer housing 41 to effect a seal. The sealing protrusion may be integrally formed with the dust cap 43, and preferably has a ring shape, surrounds a circumference of the dust cap 43, and seals a circumference of the outer housing 41. In this embodiment, the protrusion is directly provided on the dust cap 43 to seal, and a separate seal ring is not required to be provided between the outer case 41 and the dust cap 43, so that the steps of assembling the components are reduced.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A fiber optic connection cassette, comprising:

the box body (1) is provided with a containing cavity (10), and the containing cavity (10) is provided with an opening (11);

the cover plate (2) is plugged on the opening (11) of the accommodating cavity (10), a connecting main body (20) is integrally formed on one side, close to the accommodating cavity (10), of the cover plate (2), and the connecting main body (20) is provided with a butt joint channel (200) and a fixing buckle (201) positioned in the butt joint channel (200);

a first butt joint part (203) is arranged in the butt joint channel (200), the first butt joint part (203) is provided with a butt joint cavity (204), the connecting main body (20) is provided with a connecting hole (24) and an optical fiber connector (3), the optical fiber connector (3) partially stretches into one end of the butt joint channel (200) far away from the cover plate (2) and is matched with the first butt joint part (203), and the optical fiber connector (3) is buckled on the connecting hole (24);

the optical fiber connector (3) comprises a connector main body (30) and a first inserting core (31), wherein the connector main body (30) is provided with an accommodating cavity (300), the accommodating cavity (300) penetrates through the connector main body (30) along the axial direction of the connector main body (30) and is communicated with the abutting cavity (204), a second limiting groove (3000) is formed in the accommodating cavity (300), the connector main body (30) is further provided with an installing opening (301), the installing opening (301) penetrates through at least one side of the connector main body (30) along the radial direction of the connector main body (30), the first inserting core (31) is arranged from the installing opening (301) in the accommodating cavity (300) and at least partially stretches into the abutting cavity (204), the first inserting core (31) is sleeved with a first spring (32), and the first spring (32) and the first inserting core (31) are at least partially accommodated in the second limiting groove (3000) so as to limit the axial position of the first inserting core (31);

the connector main body (30) is further provided with a boss (35) and at least two limiting arms (34), the boss (35) and the limiting arms (34) enclose a second limiting groove (3000), the at least two limiting arms (34) are respectively positioned on two opposite sides of the first inserting core (31), the at least two limiting arms (34) enclose a limiting cavity, and the first inserting core (31) is at least partially accommodated in the limiting cavity so as to limit radial displacement of the first inserting core (31);

when the connector (4) is inserted into the docking channel (200), the fixing buckle (201) deforms to move out of the docking channel (200), and when the position of the first limit groove (400) inserted into the connector (4) is matched with the position of the fixing buckle (201), the fixing buckle (201) rebounds and is clamped with the first limit groove (400) to fix the connecting main body (20) with the connector (4), and meanwhile, the fixing buckle (201) is used for being matched with an outer shell (41) of the connector (4) so as to limit the fixing buckle (201) to be separated from the first limit groove (400).

2. A fiber optic connection box according to claim 1, wherein:

the connecting main body (20) is provided with a first cantilever (206), one end of the first cantilever (206) is connected with the connecting main body (20), and the other end of the first cantilever is provided with the fixing buckle (201).

3. A fiber optic connection box according to claim 2, wherein:

a first avoiding groove (202) is formed in one side, away from the butt joint channel (200), of the fixing buckle (201);

when the fixing buckle (201) is matched with the first limit groove (400), the first avoiding groove (202) is used for providing a first avoiding space for the outer shell (41), so that the outer shell (41) at least partially stretches into the first avoiding groove (202) after rebounding, and the fixing buckle (201) is pressed.

4. A fiber optic connection box according to claim 1, wherein:

the cover plate (2) comprises a front cover (21) and a rear cover (22) which are arranged from outside to inside, and a sealing gasket (23) is clamped and sealed between the front cover (21) and the rear cover (22);

the front cover (21) is plugged at the opening (11) of the accommodating cavity (10), and a first butt joint pore canal (210) for inserting the connector (4) is formed in the front cover (21);

the rear cover (22) is integrally formed with the connecting main body (20), and the rear cover (22) is provided with a second butt joint hole channel (220) for inserting the connector (4);

the sealing gasket (23) is provided with a third butt joint hole channel (230) which is used for being inserted into the connector (4) and is in sealing connection with the connector (4).

5. A fiber optic connection box according to claim 4, wherein:

the second butt joint pore canal (220) is far away from the orifice integrated into one piece of the sealing gasket (23) and is provided with a reinforcing convex rib (221), the reinforcing convex rib (221) protrudes out of the surface of the rear cover (22) along the thickness direction of the rear cover (22), and the inner wall of the reinforcing convex rib (221) is at least partially connected with the outer wall of the connecting main body (20).

6. A fiber optic connection box according to claim 1, wherein:

the first inserting core (31) is provided with a first positioning part (310), and the first positioning part (310) comprises a positioning groove;

the connector main body (30) is provided with a second positioning part (33) corresponding to the first positioning part (310), the second positioning part (33) comprises a second cantilever, and the second cantilever protrudes into the positioning groove and is matched with the positioning groove so as to limit the rotation of the first ferrule (31).

7. A fiber optic connection box according to claim 1, wherein:

one end of the connector main body (30) is provided with a second butt joint part (36) at least partially sleeved on the first butt joint part (203), a gap is reserved between the second butt joint part (36) and the limiting arm (34), a second avoidance space (37) is formed in one side of the second butt joint part (36) of the connector main body (30), and the second avoidance space (37) is radially arranged on the outer side of the limiting arm (34).

8. A fiber optic connection box according to claim 1, wherein:

the connector main body (30) is provided with a buckling arm (38), and the buckling arm (38) stretches into the butt joint channel (200) to be buckled and fixed with the connecting hole (24);

the connecting main body (20) is provided with a second avoiding groove (205), and the second avoiding groove (205) is used for accommodating part of the buckling arm (38).

9. A fiber optic connection box assembly, comprising:

the fiber optic connection box of any one of claims 1-8;

the connector (4) comprises a connector main body (40) and an outer shell (41), wherein the connector main body (40) is provided with a first limit groove (400), and the outer shell (41) is sleeved on the connector main body (40) and is provided with an elastic piece (42) between the connector main body (40);

when the connector main body (40) is inserted into the butt joint channel (200), the outer shell (41) is propped against the deformed fixing buckle (201), the elastic piece (42) is compressed, when the first limiting groove (400) is clamped with the fixing buckle (201), the fixing buckle (201) is reset in a rebound mode to release the limit of the outer shell (41), and the elastic piece (42) is used for driving the outer shell (41) to reset to press and hold the clamping position.

10. A fiber optic connection box assembly according to claim 9, wherein:

the connector (4) further comprises a dust cap (43), the dust cap (43) having an internal thread;

the outer housing (41) has an external thread (410) which cooperates with the internal thread, the external thread (410) has at least two thread starts, and the end of the external thread (410) is provided with a stop (411).

11. A fiber optic connection box assembly according to claim 10, wherein:

the internal thread has a tooth thickness greater than the external thread (410).

12. A fiber optic connection box assembly according to claim 10, wherein:

the inner surface of the dustproof cap (43) is provided with a sealing protrusion, and the sealing protrusion is in interference fit with the outer wall of the outer shell (41) to realize sealing.