CN113690700B - Adapter - Google Patents

Abstract

The invention relates to an adapter, which comprises an adapter shell and a jumper wire component arranged in the adapter shell, wherein the jumper wire component comprises a front contact piece, a rear contact piece and an optical fiber; the rear contact piece is provided with a rear fixing sleeve, and the rear fixing sleeve is provided with a clamping groove; the adapter shell comprises a middle shell, the middle shell comprises a base and a cover plate which are buckled and clamped in the up-down direction, a through hole for the front and back penetration of the back contact piece is formed in the base, a radially extending communication groove is formed in the wall of the through hole, the communication groove is communicated with the inside and the outside of the through hole and is used for vertically corresponding to the clamping groove, and the back shell of the plug-in end is arranged on the base; a stop piece is movably assembled in the communication groove along the up-down direction, and can be inserted into the clamping groove to prevent the back contact piece from moving back and forth, and can also be pulled out of the clamping groove to pull out the back contact piece forwards; the cover plate is used for being in stop fit with the stop piece to prevent the stop piece from falling out of the clamping groove.

Description

Adapter

Technical Field

The present invention relates to an adapter.

Background

In daily production and life, signals are often led into or led out of a cabinet through a cable, a cabinet body socket is arranged on a cabinet body of the cabinet, a cable plug is arranged at the end part of the cable, and an adapter is arranged between the cabinet body socket and the cable plug for adapter connection.

The present adapter is shown in chinese patent application publication No. CN105576433a, and the adapter includes an adapter housing and a jumper component disposed in the adapter housing, where the adapter housing includes a front-end socket housing (i.e., a front housing in the patent application), a rear-end opposite socket housing (i.e., a rear housing in the patent application), and a middle housing (i.e., a middle housing in the patent application), the jumper component includes a front contact (i.e., an adapter plug contact in the patent), a rear contact (i.e., an adapter socket contact in the patent), and a locking clip is fixed on the socket housing, and can be locked by being inserted into a cabinet socket, and a locking slot is formed in the opposite socket housing, and can be locked by being matched with the locking clip on the cable plug. In the prior art, a front contact is fixed on a middle shell through a front fixing sleeve, a plug end shell fixes the front contact on the middle shell through the front fixing sleeve, a rear fixing sleeve is assembled at the rear end of the middle shell, the rear contact is fixedly arranged in the rear fixing sleeve, and a plug end shell is sleeved outside the middle shell.

In the prior art, after the jumper wire component is installed in the adapter shell, when the rear contact piece is required to be cleaned or repaired, the rear contact piece is limited by a backward step on the middle shell when being pulled forward, so that the rear contact piece and the rear fixing sleeve cannot be pulled forward; when the rear contact is pulled backwards, the rear contact is limited by the spring and cannot be pulled backwards. That is, neither forward nor rearward is the rear contact removed from the adapter housing, and cleaning or repair is not accomplished.

Disclosure of Invention

The invention aims to provide an adapter which solves the technical problem that in the prior art, a rear contact cannot be removed, so that cleaning and repairing cannot be performed.

In order to achieve the above purpose, the technical scheme of the adaptor provided by the invention is as follows: an adapter, comprising:

the adapter shell comprises a plug-in end shell at the front end, a plug-in end shell at the rear end and a middle shell in the middle, and a sealing matching part for sealing and inserting with the connecting sleeve is arranged on the adapter shell;

The jumper wire component is arranged in the adapter shell and comprises a front contact piece at the front end, a rear contact piece at the rear end and an optical fiber for connecting the front contact piece and the rear contact piece, wherein the front contact piece is assembled in the plug-in end shell, and the rear contact piece is inserted into the middle shell and the opposite plug-in end shell;

The rear contact piece is provided with a rear fixing sleeve, and the rear fixing sleeve is provided with a clamping groove;

the middle shell comprises a base and a cover plate which are buckled and clamped in the up-down direction, a through hole for the front and rear of the rear contact piece to penetrate is formed in the base, a radially extending communication groove is formed in the wall of the through hole, the communication groove is communicated with the inside and the outside of the through hole and is used for being vertically corresponding to the clamping groove, and the plug-in end shell is arranged on the base;

a stop piece is movably assembled in the communication groove along the up-down direction, and can be inserted into the clamping groove to prevent the back contact piece from moving back and forth, and can also be pulled out of the clamping groove to pull out the back contact piece forwards;

The cover plate is used for being in stop fit with the stop piece to prevent the stop piece from falling out of the clamping groove.

The beneficial effects are that: the front and back positions of the back contact piece are limited through the stop piece, front and back movement of the back contact piece during use is prevented, after the stop piece is removed, the back contact piece can be pulled out of the through hole of the base forwards, and cleaning or repairing can be achieved. Under normal conditions, the stop piece is blocked by the cover plate and cannot be separated, normal work is guaranteed, and the cover plate and the base are clamped in a split manner, so that the adapter can be repeatedly disassembled and used, and the adapter shell cannot be damaged.

Preferably, the base comprises a U-shaped part with an opening at one side in the up-down direction, and the through hole is arranged at the rear side of the U-shaped part;

The plug-in end shell is detachably inserted on the U-shaped part along the up-down direction. The plug-in end shell is split and inserted on the U-shaped part, so that the rear contact piece is conveniently taken out from the opening of the U-shaped part, the operation is convenient, and after the plug-in end shell is split with the U-shaped part, the base, the opposite plug-in end shell and the sealing matching part can be integrally formed, so that the demolding of the perforation is convenient.

Preferably, the U-shaped part comprises a bottom plate, a left side plate and a right side plate which are respectively arranged at the left side and the right side of the bottom plate;

the jumper wire component is arranged in a left-right direction at intervals, the plug-in end shell is correspondingly provided with two left-right interval arrangement components, the bottom plate is provided with a spacer, the spacer is arranged at intervals left and right with a left side plate and a right side plate, and the plug-in end shell is correspondingly provided with a stop groove and a stop bulge with the corresponding left side plate or right side plate or spacer. Through setting up backstop groove and backstop arch, can realize the fixed and the front and back tensile of grafting end casing and base.

Preferably, the U-shaped part comprises a bottom plate, a left side plate and a right side plate which are respectively arranged at the left side and the right side of the bottom plate;

the jumper wire component is provided with one, the bottom plate is provided with a long groove extending leftwards and rightwards, the plug-in end shell is provided with a stop plate, and the stop plate is used for being inserted into the long groove;

The left-right length of the long groove is larger than the left-right length of the stop plate, so that the plug end shell can float left and right in the U-shaped part. The plug end housing can float left and right in the U-shaped portion so that the plug end housing can be aligned with the lock slot in the cabinet socket.

Preferably, the seal mating portion includes a positioning cylinder integrally formed between the base and the opposite-plug end housing. The positioning cylinder and the base are integrally formed, so that the positioning cylinder is convenient to process and has a small overall size.

Preferably, the plugging end shell comprises a front plugging end shell and a rear plugging end shell, and an optical fiber passing groove for placing optical fibers is formed in one side of the rear plugging end shell. After the optical fiber groove is formed, the optical fiber can be conveniently put in, and only the splicing end shell is required to be assembled and then ground when the contact piece is manufactured, so that the optical fiber cannot be damaged.

Preferably, the cover plate is provided with a claw extending up and down, the claw is provided with a locking window, and the base is provided with a locking boss matched with the locking window of the claw.

Preferably, the plugging end shell is provided with a locking clip connected with the shell of the cabinet socket, and the adapter shell is provided with a pressing plate for pressing the locking clip to unlock;

The left and right sides of clamp plate are equipped with the flange, the flange is used for stopping the cooperation about with the locking checkpost to prevent locking checkpost and clamp plate dislocation along left and right directions. The flange can prevent that locking checkpost and clamp plate from controlling the dislocation, and then lead to the unblock inefficacy.

Preferably, the cover plate and the pressing plate are integrally formed.

Preferably, the rear fixing sleeve in the jumper wire component is provided with a ring groove, and an inner sealing ring is arranged in the ring groove and is used for being matched with the adapter shell in a sealing way so as to be waterproof.

Drawings

Fig. 1 is a schematic structural diagram of an adaptor according to an embodiment 1 of the present invention;

fig. 2 is a front view of an adapter according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of a jumper assembly according to an embodiment 1 of the present invention;

FIG. 4 is a schematic diagram illustrating the cooperation of the cover plate and the pressing plate in the embodiment 1 of the adapter according to the present invention;

fig. 5 is a schematic structural diagram of the base, the opposite plug end housing and the positioning cylinder in the embodiment 1 of the adaptor according to the present invention;

FIG. 6 is a front view of the base, opposite plug end housing, and positioning cylinder of embodiment 1 of the adaptor according to the present invention;

Fig. 7 is a schematic structural diagram of a rear housing of a plugging end in an embodiment 1 of an adapter according to the present invention;

FIG. 8 is a schematic view of an adaptor according to embodiment 1 of the present invention with a cover plate and a pressing plate removed;

FIG. 9 is a schematic view of the mating of jumper components and plug end housings of embodiment 1 of the present invention;

FIG. 10 is a schematic view of a base, a positioning cylinder, and a counter-plug housing of an embodiment 2 of an adapter according to the present invention;

FIG. 11 is a schematic view illustrating the mating of the plug end housing and the stop plate in embodiment 2 of the present invention;

FIG. 12 is a schematic view of an adaptor according to embodiment 2 of the present invention with cover plates and pressing plates removed;

Fig. 13 is a schematic structural diagram of an adaptor according to embodiment 3 of the present invention;

Fig. 14 is a schematic view showing the mating of the rear housing and the stop plate of the plugging end in embodiment 4 of the adaptor according to the present invention;

Reference numerals illustrate:

100. An adapter housing; 101. a plug end housing; 102. an intermediate housing; 103. a butt-end shell; 104. a front housing of the plug end; 105. a rear housing of the plug end; 106. a base; 107. a cover plate; 108. a locking clip; 109. a locking groove; 110. a flange; 111. a claw; 112. locking the window; 113. perforating; 114. a communication groove; 115. a stopper; 116. a spacer; 117. a stop groove; 118. locking the bulge; 119. a stop protrusion; 120. a bottom plate; 121. a left side plate; 122. a right side plate; 123. passing through the optical fiber groove; 124. a long groove; 125. a stop plate; 126. a stop plate mounting groove; 200. positioning a cylinder; 201. an outer seal ring; 300. a pressing plate; 400. a jumper member; 401. a front contact; 402. a rear contact; 403. an optical fiber; 404. a front fixing sleeve; 405. a spring; 406. a rear fixing sleeve; 407. a clamping groove; 408. a ring groove; 501. an inner seal ring; 502. and (5) aligning the sleeve.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It is noted that 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 a process or method comprising the element.

In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; 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 above terms in the present invention can be understood by those skilled in the art in specific cases.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the term "provided" may be interpreted broadly, and for example, an object "provided" may be a part of a body, may be separately disposed from the body, and may be connected to the body, where the connection may be a detachable connection or an undetachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.

The present invention is described in further detail below with reference to examples.

Specific embodiment 1 of the adaptor provided by the invention:

as shown in fig. 1 to 9, the adapter is used for implementing the switching between the cabinet socket and the cable plug, wherein the front end of the adapter is a plug-in end for connecting with the cabinet socket, and the rear end is a plug-in end for connecting with the cable plug. The adaptor in this embodiment is a duplex adaptor.

The adapter includes an adapter housing 100 and a jumper member 400 mounted within the adapter housing 100. The jumper component 400 is shown in fig. 3, and the jumper component 400 includes a front contact 401 at the front end, a rear contact 402 at the rear end, and an optical fiber 403 connecting the two contacts, wherein a front fixing sleeve 404 is fixedly sleeved on the front contact 401, and a spring 405 is sleeved on the rear end of the front fixing sleeve 404. A rear retaining sleeve 406 is mounted over the rear contact 402 and is positioned on the front side of the rear contact 402. The rear fixing sleeve 406 is provided with a clamping groove 407, an annular groove 408 is arranged at the rear of the clamping groove 407, the clamping groove 407 is used for being matched with the stop piece 115 to realize front and rear positioning of the rear contact piece 402, and the annular groove 408 is used for installing the inner sealing ring 501 to realize sealing fit of the jumper wire component 400 and the adapter housing 100.

As shown in fig. 1 and 2, the adaptor housing 100 includes a plug end housing 101, an intermediate housing 102 and an opposite plug end housing 103, which are sequentially arranged from front to back, the plug end housing 101 is opposite to the housing of the cabinet socket when in use, the opposite plug end housing 103 is opposite to the housing of the cable plug when in use, and a sealing mating portion is provided between the intermediate housing 102 and the opposite plug end housing 103. The plugging end housing 101 comprises a plugging end front housing 104 and a plugging end rear housing 105 which are clamped together, and the plugging end rear housing 105 is arranged on the middle housing 102, wherein a locking clamp 108 is arranged on the plugging end front housing 104, the locking clamp 108 is a locking clamp 108 in a conventional LC plug, the locking clamp 108 can be inserted into a cabinet socket to realize locking, and unlocking can be realized after the locking clamp 108 is pressed downwards. There is forward annular step in the back casing 105 of the grafting end, and the front casing 104 of the grafting end can push up the annular step in the back casing 105 of the grafting end with preceding contact 401, preceding fixed cover 404 and preceding contact 401 rear spring 405, and owing to block together between front casing 104 of the grafting end and the back casing 105 of the grafting end, can fix the front contact 401 in the casing 101 of the grafting end, the front contact 401 forms the plug monomer with the casing 101 of the grafting end together, and the structure of plug monomer is unanimous with prior art, and is not repeated here. The opposite spigot housing 103 has a locking slot 109.

The structure of the middle housing 102 is shown in fig. 1,2 and 5, the middle housing 102 comprises a base 106 and a cover plate 107 which are buckled together in a split manner along the up-down direction, the structure of the base 106 is shown in fig. 5, the base 106 is in a square structure as a whole, the base 106 comprises a U-shaped part at the front end, and the rear housing 105 at the plug-in end is arranged on the U-shaped part in a split manner. The upper end and the front end of the U-shaped part are open, and the U-shaped part comprises a bottom plate 120, a left side plate 121 and a right side plate 122, and two locking bulges 118 are respectively arranged on the outer sides of the left side plate 121 and the right side plate 122. Correspondingly, the left side and the right side of the cover plate 107 are downwards bent to form clamping claws 111, the number of the clamping claws 111 is the same as that of the locking protrusions 118 and corresponds to that of the locking protrusions 118 one by one, locking windows 112 are formed in the clamping claws 111, the cover plate 107 can be clamped on the base 106 through the matching of the locking windows 112 and the locking protrusions 118, and the clamping claws 111 and the locking protrusions can be separated.

The cover plate 107 is integrally provided with the pressing plate 300, the front end of the pressing plate 300 extends to the locking clamp 108, and the locking clamp 108 can be pressed by pressing the pressing plate 300 downwards, so that unlocking between the plug monomer and the cabinet socket is realized. As shown in fig. 4, the flanges 110 extending downward are integrally formed on the left and right sides of the front end of the pressing plate 300, and the flanges 110 can be in stop fit with the locking clip 108 in the left and right directions, so that the pressing plate 300 and the locking clip 108 are prevented from being misplaced in the left and right directions, and unlocking failure is caused.

Two through holes 113 extending forwards and backwards are formed in the base 106, and the two through holes 113 are arranged at intervals along the left-right direction. A communication groove 114 is formed in the wall of the upper end of the through hole 113, the communication groove 114 extends along the radial direction of the through hole 113, and the communication groove 114 communicates the inside and the outside of the through hole 113. In use, the rear fixing sleeve 406 of the rear contact 402 is inserted into the through hole 113, and the clamping groove 407 of the rear fixing sleeve 406 corresponds up and down to the communication groove 114. The adapter further comprises a stopper 115, here the stopper 115 is a stopper, and the stopper 115 can sequentially penetrate into the communication groove 114 and the card slot 407, thereby defining the front-rear position of the rear contact 402.

As shown in fig. 5, a spacer 116 is fixed at the front end of the bottom plate 120, wherein the spacer 116, the left side plate 121 and the right side plate 122 are arranged at intervals in the left-right direction, so that two mounting openings are formed, and the two mounting openings are respectively matched with two plug monomers. Stop grooves 117 extending up and down are formed on both the left and right sides of the spacer 116 and the left and right side plates 121 and 122. Correspondingly, as shown in fig. 7, the two sides of the rear housing 105 of the plugging end are respectively integrally formed with a stop protrusion 119, and the stop protrusions 119 can be inserted into the stop grooves 117 in an up-down direction in an adaptive manner, thereby realizing the fixation and the tensile strength of the plugging end.

As shown in the figure, the rear housing 105 has a through hole in the middle and an optical fiber slot 123 is formed on one side, and the optical fiber 403 in the jumper component 400 can be put into the through hole 113 from one side of the rear housing 105, so that the problem that the rear contact 402 is inconvenient to put in when one end is put in is avoided.

As shown in fig. 1to 6, the seal mating portion includes a positioning cylinder 200, and an outer seal ring 201 mounted outside the positioning cylinder 200. Because the rear shell 105 of the plug end at the position A and the base 106 are in a split assembly relationship, the positioning cylinder 200 and the base 106 are integrally formed, so that the film and core can be removed forward, the perforation 113 at the position B can be integrally formed, and the positioning cylinder 200 and the opposite-plug end shell 103 are integrally formed, and the perforation 113 corresponding to the perforation 113 in the base 106 is formed in the positioning cylinder 200 and the opposite-plug end shell 103. An alignment sleeve 502 is also secured within the positioning cylinder 200 and the bore 113 of the mating end housing 103 to allow for centering of the rear contact 402.

When the jumper wire assembly is used, the inner sealing ring 501 is installed in the annular groove 408 of the rear fixing sleeve in the jumper wire component 400, the rear contact 402 penetrates into the base 106, the positioning cylinder 200 and the through hole 113 of the opposite plug end shell 103, the clamping groove 407 on the rear fixing sleeve corresponds to the communication groove 114 on the base 106, the stop piece 115 is inserted into the communication groove 114 and the clamping groove 407, the front contact 401 is installed in the plug end shell 101, the plug end shell 101 is clamped on the base 106, the cover plate 107 can prevent the stop piece 115 from being separated upwards after clamping, the outer sealing ring 201 is installed, and the whole adapter is installed on a cabinet. When cleaning the rear contact 402, the cover 107 is removed from the base 106, and the stopper 115 is removed, so that the rear contact 402 can be removed from the base 106.

It should be noted that the front, rear, left, right, upper and lower in this embodiment are merely relative concepts, and are not limited to the structure.

Specific example 2 of the adaptor of the present invention:

As shown in fig. 10 to 12, the adaptor of the present embodiment is different from embodiment 1 in that it is a simplex adaptor including a single jumper member. Correspondingly, a single through hole 113 and a single communicating groove 114 are formed in the base 106, and a long groove 124 extending leftwards and rightwards is formed in a bottom plate 120 of the U-shaped portion in the base 106.

As shown in fig. 11, a stop plate mounting groove 126 is formed in the rear plug end housing 105, and a stop plate 125 is clamped in the stop plate mounting groove 126, wherein the left-right length of the stop plate mounting groove 126 is greater than the left-right length of the stop plate 125, so that the rear plug end housing 105 is fixed in a front-rear limit manner with the base 106, and can float in the left-right direction, and the plug end housing 101 can be smoothly inserted into a locking groove of a cabinet socket.

Specific example 3 of the adaptor of the present invention:

As shown in fig. 13, the difference from embodiment 2 is that in this embodiment, three locking projections are provided on each side of the base 106.

Specific example 4 of the adaptor of the present invention:

as shown in fig. 14, the difference from embodiment 2 is that in this embodiment, a stopper plate 125 is integrally formed on the plug end rear housing 105.

Specific example 5 of the adaptor of the present invention:

the difference from embodiment 1 is that in embodiment 1, the cover plate and the pressing plate are integrally formed. In this embodiment, the cover plate and the pressing plate may be fixed together in a separate manner, for example, by bonding or the like. In other embodiments, the pressure plate may be disposed on the positioning cylinder or elsewhere in the adapter housing.

Specific example 6 of the adaptor of the present invention:

the difference from embodiment 1 is that in embodiment 1, the left and right sides of the pressing plate have flanges. In the embodiment, the flange is cancelled, and even if the flange is not arranged in normal use, the left and right dislocation between the locking clamp and the pressing plate is not easy to occur.

Specific example 7 of the adaptor of the present invention:

The difference from embodiment 1 is that in embodiment 1, the cover plate is provided with a claw, the claw is provided with a locking window, the base is provided with a locking boss, and the cover plate and the base are clamped together. In the embodiment, the locking window on the claw is also replaced by the locking boss, and the clamping is realized through the cooperation of the claw and the locking boss on the base. In other embodiments, locking windows are arranged on the left side plate and the right side plate of the base, and locking bosses are arranged on the clamping jaws to realize clamping locking.

Specific example 8 of the adaptor of the present invention:

The difference from embodiment 1 is that in embodiment 1, the rear housing of the plugging end is provided with an optical fiber through groove. In this embodiment, the optical fiber passing through the slot is eliminated, so that the optical fiber and the rear contact member are inserted from the rear housing of the plug end.

Specific example 9 of the adaptor of the present invention:

The difference from embodiment 1 is that in embodiment 1, the seal engaging portion includes a positioning cylinder integrally formed with the base. In this embodiment, can the components of a whole that can function independently be fixed between base and the positioning cylinder, for example adopt the mode of strong dress, keep off behind base and the positioning cylinder components of a whole that can function independently after, can integrated into one piece between casing and the base behind the grafting end, keep off when casing and the base integrated into one piece behind the grafting end, the base can set up U-shaped part, and the upper end no longer opens promptly. In other embodiments, the seal engaging portion may be a collar fixedly secured to the opposite housing.

Embodiment 10 of the adapter of the present invention:

the difference from embodiment 1 is that in embodiment 1, the stopper is a block. In this embodiment, the stopper is a stopper pin.

It should be noted that the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An adapter, comprising:

The adapter shell (100) comprises a plug end shell (101) at the front end, a counter plug end shell (103) at the rear end and a middle shell (102) positioned in the middle, and a sealing matching part for sealing and plugging with the connecting sleeve is arranged on the adapter shell (100);

A jumper wire member (400) provided in the adapter housing (100) and including a front contact (401) at the front end, a rear contact (402) at the rear end, and an optical fiber (403) connecting the front and rear contacts (402), the front contact (401) being fitted in the plug-in end housing (101), the rear contact (402) being inserted into the intermediate housing (102) and the opposite-plug-in end housing (103);

The method is characterized in that: a rear fixing sleeve (406) is arranged on the rear contact (402), and a clamping groove (407) is arranged on the rear fixing sleeve (406);

the middle shell (102) comprises a base (106) and a cover plate (107) which are fastened in a buckling manner along the up-down direction, a through hole (113) for a rear contact (402) to penetrate through is formed in the base (106), a radially extending communication groove (114) is formed in the hole wall of the through hole (113), the communication groove (114) is communicated with the inside and the outside of the through hole (113) and is used for vertically corresponding to the clamping groove (407), and the plug-in end shell (101) is arranged on the base (106);

A stop piece (115) is movably arranged in the communication groove (114) along the up-down direction, the stop piece (115) can be inserted into the clamping groove (407) to prevent the back contact piece (402) from moving forwards and backwards, and can also be pulled out of the clamping groove (407) to pull out the back contact piece (402) forwards;

The cover plate (107) is used for being in stop fit with the stop piece (115) so as to prevent the stop piece (115) from being separated from the clamping groove (407).

2. An adaptor according to claim 1, wherein: the base (106) comprises a U-shaped part with an opening at one side in the up-down direction, and the through hole (113) is arranged at the rear side of the U-shaped part;

the plug-in end shell (101) is detachably inserted on the U-shaped part along the up-down direction.

3. An adaptor according to claim 2, wherein: the U-shaped part comprises a bottom plate (120), a left side plate (121) and a right side plate (122) which are respectively arranged at the left side and the right side of the bottom plate (120);

The jumper wire component (400) is arranged in two at intervals along the left-right direction, the plug-in end shell (101) is correspondingly provided with two arranged at intervals left and right, the bottom plate (120) is provided with a spacer (116), the spacer (116) is arranged at intervals left and right with a left side plate (121) and a right side plate (122), and the plug-in end shell (101) is correspondingly provided with a stop groove (117) and a stop bulge (119) with the corresponding left side plate (121) or right side plate (122) or the spacer (116).

4. An adaptor according to claim 2, wherein: the U-shaped part comprises a bottom plate (120), a left side plate (121) and a right side plate (122) which are respectively arranged at the left side and the right side of the bottom plate (120);

the jumper wire component (400) is provided with one, the bottom plate (120) is provided with a long groove (124) extending leftwards and rightwards, the plug-in end shell (101) is provided with a stop plate (125), and the stop plate (125) is used for being inserted into the long groove (124);

The left-right length of the long groove (124) is longer than the left-right length of the stop plate (125) so that the plug end housing (101) can float left-right in the U-shaped portion.

5. An adaptor according to claim 2 or 3 or 4, wherein: the seal fit portion includes a positioning cylinder (200) integrally formed between the base (106) and the opposite-plug end housing (103).

6. The adapter according to any one of claims 1-4, wherein: the plug end shell (101) comprises a plug end front shell (104) and a plug end rear shell (105), and an optical fiber passing groove (123) for placing an optical fiber (403) is formed in one side of the plug end rear shell (105).

7. The adapter according to any one of claims 1-4, wherein: the cover plate (107) is provided with a claw (111) extending up and down, the claw (111) is provided with a locking window (112), and the base (106) is provided with a locking boss matched with the locking window (112) of the claw (111).

8. The adapter according to any one of claims 1-4, wherein: the connector comprises a plug end shell (101), a locking clamp (108) and a pressing plate (300), wherein the locking clamp (108) is used for being connected with a shell of a cabinet socket, and the pressing plate (300) is used for pressing the locking clamp (108) to unlock the adapter shell (100);

The left and right sides of clamp plate (300) are equipped with flange (110), flange (110) are used for stopping the cooperation about with locking checkpost (108) to prevent locking checkpost (108) and clamp plate (300) dislocation along left and right directions.

9. The adapter according to claim 8, wherein: the cover plate (107) and the pressing plate (300) are integrally formed.

10. The adapter according to any one of claims 1-4, wherein: the jumper wire component (400) is characterized in that a ring groove (408) is formed in a rear fixing sleeve (406), an inner sealing ring (501) is arranged in the ring groove (408), and the inner sealing ring (501) is used for being matched with the adapter housing (100) in a sealing mode to prevent water.