Adapter and quick-plugging optical fiber connection assembly

Abstract

The invention discloses an adapter and a quick-plugging optical fiber connection assembly, and relates to the field of optical distribution networks. The adapter comprises an adapter body, at least one end of the adapter body is provided with a cylindrical butt joint portion, the butt joint portion is provided with a butt joint channel, the adapter body is provided with an insertion core containing seat, the insertion core containing seat extends into the butt joint channel, an insertion groove is formed between the insertion core containing seat and the inner wall of the butt joint portion, and the insertion groove is used for containing the end of an insertion portion of the connector. The butt joint part is provided with an accommodating groove communicated with the butt joint channel; the clamping body is movably contained in the containing groove and used for clamping a connector matched with the adapter, and the clamping body is configured to be located behind the sealing structure on the end portion of the insertion portion in the insertion direction after the connector and the adapter are in butt joint. By using the optical fiber connecting assembly, the plugging operation of the adapter and the connector can be simply, conveniently and quickly completed, the locking force is reliable, and the problems that the plugging operation of the existing optical fiber connecting assembly is inconvenient, and the locking force is insufficient are effectively solved.

Description

[0001] This application is a divisional application with a filing date of 2018.03.30, an application number of 201810277056.X, and an invention name of a connector, an adapter, and a quick-plug fiber optic connection assembly. Technical Field

[0002] The invention relates to the field of optical distribution networks, and in particular to an adapter and a fast-plug optical fiber connection component. Background Art

[0003] With the large-scale deployment of FTTH (Fiber To The Home), fiber optic connection components are increasingly being used. Generally speaking, fiber optic connection components include fiber optic connectors and adapters. However, most of the fiber optic connectors and adapters currently used are industry standard connectors and adapters. The original design of this type of connector and adapter is to solve the fiber optic connection indoors or in a protective box (box), so there are the following defects in actual use:

[0004] 1. Existing standard connectors and adapters have low pull-off force and cannot meet the connection requirements of optical cables and optical fibers under large pull forces. Therefore, it is generally necessary to use hose clamps, clamps, etc. to additionally fix and protect the optical cables and optical fibers, which undoubtedly makes the connection and plug-in operations inconvenient and also increases the cost of use;

[0005] 2. Existing standard connectors and adapters have poor dust and water resistance and cannot be used outdoors. They can only be used indoors or in environments with protective measures, and have great limitations in use.

[0006] At present, there are a small number of waterproof fiber optic connectors and adapters on the market, but most of them adopt a screw-type locking method. The screw-type locking method has the defects of cumbersome plugging and unplugging operation and limited locking force due to its own characteristics.

[0007] Therefore, how to solve the problems of inconvenient plugging and unplugging operations, insufficient locking force, and waterproof and dustproof problems of existing optical fiber connection components is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0008] The present application provides an adapter and a quick-plug optical fiber connection assembly, which can solve the problem of withstanding low pull-out force.

[0009] In a first aspect, an embodiment of the present application provides an adapter, the adapter comprising:

[0010] An adapter body, wherein at least one end of the adapter body is provided with a cylindrical docking portion, the docking portion is provided with a docking channel, the adapter body is provided with a ferrule receiving seat for accommodating an optical fiber ceramic ferrule, the ferrule receiving seat extends into the docking channel, and a slot is formed between the ferrule receiving seat and the inner wall of the docking portion, the slot is used to accommodate the end of the insertion portion of the connector matching the adapter, and the docking portion is provided with a receiving groove connected to the docking channel;

[0011] A holding body is movably received in the receiving groove and is used to hold a connector matching the adapter, and the holding body is configured such that when the connector and the adapter are docked, along the insertion direction, the holding body is located behind the sealing structure on the end of the insertion part.

[0012] In combination with the first aspect, in one embodiment, an outer sleeve is movably sleeved outside the docking portion, and the outer sleeve has a first state and a second state. When the outer sleeve is in the first state, the outer sleeve abuts against the holding body, and a portion of the holding body is irreversibly extended into the docking channel. When the outer sleeve is in the second state, a clearance space is provided between the outer sleeve and the opening of the receiving groove for the holding body to exit the docking channel.

[0013] An inner sleeve is movably assembled on the docking portion, and is used to keep the outer sleeve in the first state after being pushed toward the insertion direction.

[0014] In combination with the first aspect, in one embodiment, the outer sleeve is provided with a supporting block protruding from the inner wall, and when the outer sleeve is in the first state, the supporting block is located at the receiving groove and supports the clamping body.

[0015] In combination with the first aspect, in one implementation, the supporting block has an inclined surface on a side close to the ferrule receiving seat.

[0016] In combination with the first aspect, in one embodiment, the clamping body includes an elastic arm extending from the docking portion, and a clamping block is provided at the end of the elastic arm; at the same time,

[0017] When the outer sleeve is in the first state, the elastic arm is in a state of not sending elastic deformation, and the holding block is completely received in the receiving groove. When the outer sleeve is in the first state, the outer sleeve is held on the holding block, and the holding block partially extends into the docking channel.

[0018] In combination with the first aspect, in one embodiment, the holding body is a steel ball, the receiving groove is a cylindrical hole, and a stop portion is provided at the bottom of the receiving groove, and the stop portion is used to prevent the steel ball from completely falling out of the receiving groove.

[0019] In combination with the first aspect, in one implementation, the sealing structure is an O-ring.

[0020] In a second aspect, an embodiment of the present application provides another adapter, the adapter comprising:

[0021] An adapter body, wherein at least one end of the adapter body is provided with a cylindrical docking portion, the docking portion is provided with a docking channel, the adapter body is provided with a ferrule receiving seat for accommodating an optical fiber ceramic ferrule, the ferrule receiving seat extends into the docking channel, and a slot is formed between the ferrule receiving seat and the inner wall of the docking portion, the slot is used to accommodate the end of a connector matching the adapter, the docking portion is provided with a receiving groove communicating with the docking channel, and the position where the receiving groove communicates with the docking channel is not the area where the slot is located;

[0022] A holding body is movably received in the receiving groove and is used for holding a connector matching the adapter.

[0023] In a third aspect, an embodiment of the present application provides another adapter, the adapter comprising:

[0024] An adapter body, wherein at least one end of the adapter body is provided with a cylindrical docking portion, the docking portion is provided with a docking channel, the adapter body is provided with a ferrule receiving seat for accommodating an optical fiber ceramic ferrule, the ferrule receiving seat extends into the docking channel, and a slot is formed between the ferrule receiving seat and the inner wall of the docking portion, the slot is used to accommodate the end of a connector matching the adapter, and the docking portion is provided with a receiving groove connected to the docking channel;

[0025] A holding body is movably received in the receiving groove and is used to hold a connector matching the adapter. The holding body is spaced apart from the end face of the ferrule receiving seat extending into the docking channel in a direction away from the ferrule receiving seat.

[0026] In a fourth aspect, an embodiment of the present application provides a quick-plug optical fiber connection assembly, the quick-plug optical fiber connection assembly comprising:

[0027] A connector comprising:

[0028] A main body, wherein the main body is provided with a cavity;

[0029] An optical cable is assembled in the main body, and the optical cable extends into the cavity;

[0030] An insertion portion is located at one end of the main body, an end of the insertion portion away from the main body is provided with an optical fiber ceramic ferrule, a sealing structure and a groove for clamping are provided on the insertion portion, and along the insertion direction, the groove is located behind the sealing structure;

[0031] An adapter comprising:

[0032] An adapter body, wherein at least one end of the adapter body is provided with a cylindrical docking portion, the docking portion is provided with a docking channel, the adapter body is provided with a ferrule receiving seat for accommodating an optical fiber ceramic ferrule, the ferrule receiving seat extends into the docking channel, and a slot is formed between the ferrule receiving seat and the inner wall of the docking portion, the slot is used to accommodate the end of the insertion portion of the connector, and the docking portion is provided with a receiving groove connected to the docking channel;

[0033] The clamping body is movably received in the receiving groove and is used for clamping with the groove.

[0034] In conjunction with the fourth aspect, in one implementation, the adapter further includes:

[0035] An outer sleeve movably sleeved outside the docking portion, the outer sleeve having a first state and a second state. When the outer sleeve is in the first state, the outer sleeve abuts against the clamping body and allows a portion of the clamping body to extend irreversibly into the docking channel. When the outer sleeve is in the second state, a clearance space is provided between the outer sleeve and the opening of the receiving groove for the clamping body to exit the docking channel.

[0036] An inner sleeve is movably assembled on the docking portion, and is used to keep the outer sleeve in the first state after being pushed toward the insertion direction.

[0037] In combination with the fourth aspect, in one implementation, a pushing device is provided on the periphery of the insertion portion, and the pushing device is used to push the inner sleeve of an adapter that is adapted to the connector.

[0038] In combination with the fourth aspect, in one embodiment, the ejection device is an ejection block provided on the outer surface of the insertion portion, or,

[0039] The ejection device is an ejection sheet spaced apart from the outer surface of the insertion portion.

[0040] In combination with the fourth aspect, in one embodiment, the groove is an annular groove arranged along the circumference of the plug body, or,

[0041] The groove is a hemispherical groove.

[0042] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0043] 1. The locking principle of the present invention uses the cooperation of steel balls and annular grooves for locking. The locking force is greater than that of the snap-on locking device used in existing standard connectors, and is more suitable for complex outdoor scenes. The insertion force required for insertion is small, and the locking force is large when locking. When pulling out, the steel balls and annular grooves are unlocked, and the connector can be pulled out smoothly. The pulling-out force is small, and it has the characteristics of convenient operation, which effectively solves the problems of inconvenient plug-in and pull-out operations and insufficient locking force of existing optical fiber connection components.

[0044] 2. In the present invention, at least one O-ring is embedded in the contact surface between the connector plug body and the adapter body. The design of the O-ring forms a closed space between the connector and the adapter, ensuring that the connector and the adapter can achieve good dust and water resistance after docking, thereby solving the problem that the existing optical fiber connection components have poor dust and water resistance and cannot be used outdoors.

[0045] 3. In the present invention, when the adapter is not docked with the connector, a protective plug can be inserted into the adapter; when the connector is not docked with the adapter, a protective cap can be installed outside the plug body of the connector. The design of the protective plug and the protective cap can provide good dust and water protection for the adapter and the connector when they are not docked, thereby effectively ensuring the service life of the adapter and the connector.

[0046] 4. The present invention can design the optical fiber connection assembly into a "single-end waterproof locking type" or a "double-end waterproof locking type" according to different usage requirements, which has a wide range of uses and is economical and applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of an adapter in an embodiment of the present invention;

[0048] Figure 2 for Figure 1 Section along AA' direction;

[0049] Figure 3 A schematic diagram of the structure of a connector in an embodiment of the present invention;

[0050] Figure 4 for Figure 3 Section along BB' direction;

[0051] Figure 5 is a schematic diagram of the adapter and the connector before docking;

[0052] Figure 6 A schematic diagram of an adapter and a connector in the process of docking and insertion;

[0053] Figure 7 A schematic diagram of the connector being ready to be unplugged from the adapter;

[0054] Figure 8 This is a schematic diagram of the connector being pulled out further after the steel ball is unlocked;

[0055] Fig. 9 A schematic diagram of a structure in which an O-ring is added to a connector and a sealing flat gasket is added to an adapter;

[0056] Fig.10 This is a schematic diagram of the structure of the protective plug inserted into the adapter;

[0057] Fig.11 This is a schematic diagram of the structure of a protective cap mounted outside the connector plug body;

[0058] Fig.12 This is a schematic diagram of the structure of a "single-end waterproof locking type" adapter in an embodiment of the present invention;

[0059] Fig.13 This is a schematic diagram of the structure of a "double-end waterproof locking type" adapter in an embodiment of the present invention;

[0060] Fig.14 is a schematic diagram of a specific embodiment of a connector;

[0061] Fig.15 for Fig.14 Schematic diagram of the connector and the adapter after docking;

[0062] Fig.16 is a schematic diagram of a specific embodiment of a protective cap;

[0063] Fig.17 for Fig.16 Medium protective helmet set Fig.14 Schematic diagram of the connector;

[0064] Fig.18 is a schematic diagram of a specific embodiment of a protective plug;

[0065] Fig.19 for Fig.18 Schematic diagram of the middle protective plug being inserted into the adapter;

[0066] Fig. 20 It is a schematic diagram of a specific embodiment of a holder.

[0067] Reference numerals:

[0068] 1-adapter, 101-adapter body, 101a-docking channel, 101b-receiving groove, 101c-allowing space, 102-ceramic sleeve, 103-directional limiting groove, 104-steel ball, 105-outer sleeve, 105a-holding block, 106-inner sleeve, 107-outer spring, 108-inner spring, 109-outer retaining ring, 110-inner retaining ring, 111-inclined surface, 112-sealing flat gasket;

[0069] 2-connector, 201-plug body, 201a-main body, 201b-cavity, 201c-insertion part, 201d-insertion core fixing part, 202-optical fiber, 203-optical fiber ceramic ferrule, 204-directional limiting protrusion, 205-plug jacket, 206-pushing device, 207-annular groove, 208-O-type sealing ring, 209-plug middle tube, 210-plug tail tube, 211-aluminum tube, 212-inner waterproof O-type sealing ring, 213-aluminum cup, 214-optical cable tail sheath, 215-optical cable, 216-heat shrink tube, 217-ceramic ferrule buffer spring;

[0070] 3-protective plug; 4-protective cap, 40-jointing part, 42-insert receiving seat, 43-elastic arm, 44-holding block. DETAILED DESCRIPTION

[0071] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0072] Embodiment 1:

[0073] Please also refer to Figures 1 to 19 The embodiment of the present invention provides a connector 2 for optical fiber connection. The connector 2 includes a plug body 201, and the plug body 201 is used to carry the optical cable 215 and provide hand-held operation. A plug jacket 205 is provided on the outside of the plug body 201, and the front end of the plug jacket 205 has a push-up device 206; the outer surface of the plug body 201 is provided with a groove for engaging with an adapter that matches the connector. The groove can be an annular groove 207. Compared with the connection method using threads in the prior art, the use of a groove as a connection structure can withstand a greater pull-off force, and does not require rotation, can be directly inserted, and is easy to operate. And because there is no need to rotate, the space required for hand operation is small, which can increase the density of the connector on the panel.

[0074] Embodiment 2:

[0075] Please also refer to Figures 1 to 19As an optional embodiment, the difference between this embodiment and embodiment 1 is that the pushing device 206 is used to push the inner sleeve 106 of the adapter 1 that is matched with the connector 2, so that the adapter 1 changes state and is connected to the connector. Of course, the pushing device 206 can also push other similar structures of the adapter 1, as long as it can change the state of the adapter 1 and achieve the effect of connection.

[0076] Embodiment 3:

[0077] Please also refer to Figures 1 to 19 As an optional embodiment, the difference between this embodiment and embodiment 1 is that the ejection device 206 is an ejection block formed by extending from the outer surface of the plug body 201. If the ejection device 206 adopts this structure, the inner sleeve 106 matching the ejection device 206 can be provided with a protrusion protruding from the outer sleeve 205 (not shown), so that the ejection device 206 can push the inner sleeve 106 and move axially relative to the outer sleeve 205.

[0078] Embodiment 4:

[0079] Please also refer to Figures 1 to 19 As an optional embodiment, the difference between this embodiment and embodiment 1 is that the ejection device 206 is an ejection sheet spaced apart from the surface of the plug body 201. The ejection sheet can be directly extended into the outer sleeve 205, so that the ejection device 206 can push the inner sleeve 106 and move axially relative to the outer sleeve 205.

[0080] In short, different structures of the ejection device 206 need to be adapted to different inner sleeves 106 , and ultimately the ejection device 206 can push the inner sleeve 106 to move axially relative to the outer sleeve 205 .

[0081] Embodiment 5:

[0082] Please also refer to Figures 1 to 19 Specifically, the difference between this embodiment and embodiment 1 is that the plug body 201 includes:

[0083] The main body 201a is provided with a cavity 201b, and the cavity 201b is used to connect the optical cable 215;

[0084] The inserting part 201c is located at one end of the main body 201a, and the inserting part 201c is provided with a ferrule fixing part 201d at one end away from the main body 201a, and the ferrule fixing part 201d is fixed with an optical fiber ceramic ferrule 203, and the groove is located on the outer surface of the inserting part 201c. The groove, a functional structure for connection, is provided on the inserting part 201c, instead of providing a thread on the outer periphery of the plug as in the prior art, so that the diameter of the adapter can be reduced.

[0085] Furthermore, the groove is located on the outer surface of the region where the inserting portion 201c is provided with the insert fixing portion 201d.

[0086] Since the ferrule fixing part 201d has a greater wall thickness, and after the optical fiber ceramic ferrule 203 is installed in the ferrule fixing part, its strength is greater. When the connector 2 is connected to the adapter 1, the groove will be subjected to radial pressure when the connector 2 is subjected to tension. The groove is arranged here to withstand greater radial force, further improving the ability to withstand pull-off force.

[0087] Specifically, the plug housing 205 is formed by extending the main body 201a toward the insertion portion 201c, and the push-up device 206 is a push-up piece extending from the end of the plug housing 205, and the push-up piece is spaced apart from the insertion portion 201c. Since the push-up piece is spaced apart from the insertion portion 201c, the push-up piece can abut against the inner sleeve 106 and extend between the outer sleeve 105 of the adapter and the docking portion 40, so that the adapter is clamped on the connector.

[0088] Optionally, the groove is an annular groove 207 arranged along the circumference of the plug body 201; or, the groove is a hemispherical groove.

[0089] The use of the annular groove 207 or the hemispherical groove has its own advantages. The annular groove 207 does not require a very strict deflection angle alignment, while the hemispherical groove requires a more precise deflection angle alignment, otherwise it will cause the adapter 1 The clamping body is difficult to accurately clamp at the center position of the hemispherical groove. However, since the hemispherical groove can often be more compatible with the shape of the clamping body, it can provide a better clamping effect, thereby improving the ability to withstand the pull-off force. In this embodiment, in order to facilitate processing, and because the use of the annular groove 207 can already withstand a very high pull-off force, therefore, in the embodiment of the present invention, the annular groove 207 is preferably selected.

[0090] Embodiment 6:

[0091] Please also refer to Figures 1 to 19 The present invention also provides a connector for optical fiber connection, comprising:

[0092] The main body 201a is provided with a cavity 201b;

[0093] An optical cable 215 is assembled in the main body 201a, and the optical cable 215 extends into the cavity 201b;

[0094] The insertion part 201c is located at one end of the main body 201a, and the end of the insertion part 201c away from the main body 201a is provided with an optical fiber ceramic ferrule 203. The insertion part 201c is provided with a groove for engaging with an adapter matching the connector.

[0095] The outer periphery of the inserting portion 201c is provided with a pushing device 206, which is used to push the inner sleeve 106 of the adapter matched with the connector.

[0096] Since the overall strength of the groove is greater than that of the thread, the clamping through the groove can withstand a greater pull-off force, and a push-up device 206 is provided on the periphery of the insertion portion 201c to trigger the connection and locking of the adapter 1. Since there is no need to rotate, it can be directly inserted, which is convenient to operate. In addition, since there is no need to rotate, the space required for manual operation is small, which can increase the density of the connector 2 on the panel.

[0097] Further, the push-out device 206 is a push-out block provided on the outer surface of the inserting portion 201c. If the push-out device 206 adopts this structure, the inner sleeve 106 matching the push-out device 206 may be provided with a protrusion protruding from the outer sleeve 205 (not shown), so that the push-out device 206 can push the inner sleeve 106 and move axially relative to the outer sleeve 205.

[0098] Optionally, the push-up device 206 is a push-up sheet spaced apart from the outer surface of the inserting portion 201c. Since the push-up sheet is spaced apart from the inserting portion 201c, the push-up sheet can abut against the inner sleeve 106 and extend between the outer sleeve 105 of the adapter and the docking portion 40, so that the adapter is clamped on the connector.

[0099] Furthermore, the groove is located on the outer surface of the insertion portion 201c where the optical fiber ceramic ferrule 203 is installed. Since the ferrule fixing portion 201d has a greater wall thickness, and after the optical fiber ceramic ferrule 203 is installed in the ferrule fixing portion, its strength is greater. When the connector 2 is pulled after being connected to the adapter 1, the groove will be subjected to radial pressure. The groove is arranged here to withstand greater radial force, further improving the ability to withstand pull-off force.

[0100] Embodiment 7:

[0101] Please refer to Figure 1-19 The present invention also provides an adapter 1 for optical fiber connection, which comprises:

[0102] An adapter body 101, wherein at least one end of the adapter body 101 is a tubular docking portion 40, wherein the docking portion 40 is provided with a docking channel 101a, and the adapter body 101 is provided with a ferrule receiving seat 42 for accommodating an optical fiber ceramic ferrule 203, wherein the ferrule receiving seat 42 is located in the middle of the adapter body 101, and the docking portion 40 is provided with a receiving groove 101b communicating with the docking channel 101a;

[0103] The ferrule receiving seat 42 extends into the docking channel 101a, and a slot is formed between the ferrule receiving seat 42 and the inner wall of the docking portion 40, and the slot is used to accommodate the end of the insertion portion 201c of the connector matching the adapter. Figure 1 As shown, the slot in this embodiment is bounded by the end face where the ferrule receiving seat 42 extends into the docking channel 101a, and the area on the left side of the end face is the slot.

[0104] The card holder is movably received in the receiving groove 101b, and is used to hold the connector matching the adapter, and the card holder is configured as follows: when the connector and the adapter are connected, along the insertion direction, the card holder is located behind the sealing structure on the end of the insertion part 201c.

[0105] Alternatively, the holding body is spaced apart from the end face of the ferrule receiving seat 42 extending into the docking channel 101a in a direction away from the ferrule receiving seat 42. From the perspective of the slot, the position where the receiving groove 101b is connected to the docking channel 101a is not the area where the slot is located, so that a better sealing effect can be achieved.

[0106] Preferably, the adapter further comprises:

[0107] An outer sleeve 105 movably sleeved on the outside of the docking portion 40, the outer sleeve 105 has a first state and a second state. When the outer sleeve 105 is in the first state, the outer sleeve 105 abuts against the holding body, and a part of the holding body is irreversibly extended into the docking channel 101a. When the outer sleeve 105 is in the second state, a clearance space 101c is provided between the outer sleeve 105 and the opening of the receiving groove 101b for the holding body to exit the docking channel 101a.

[0108] The inner sleeve 106 is movably assembled on the docking portion 40 , and the inner sleeve 106 is used to keep the outer sleeve 105 in the first state after being pushed toward the insertion direction.

[0109] Because when the outer sleeve 105 is in the first state, part of the holding body is irreversibly extended into the docking channel 101a, and the part extending into the docking channel 101a is used to cooperate with the groove of the connector 2 to connect and lock the connector 2 and the adapter 1, and because the holding body is held and cannot be withdrawn, the docking channel 101a makes the connection between the connector 2 and the adapter 1 very firm and can withstand very high pulling force.

[0110] Embodiment 8:

[0111] For details, please refer to Figure 1-19Compared with Example 7, specifically, the holding body is a steel ball 104, and the receiving groove 101b is a cylindrical hole. A stop portion is provided at the bottom of the receiving groove 101b, and the stop portion is used to prevent the steel ball 104 from completely falling out of the receiving groove 101b. Specifically, the stop portion is a funnel structure at the bottom of the receiving groove 101b. It is foreseeable that there are many other stopping methods, such as providing a convex point on the inner wall at the bottom of the receiving groove 101b. The steel ball 104 is selected as the holding body because the steel ball itself has high strength and is not easily stuck when moving up and down in the receiving groove 101b. There is also an arc-shaped retracted stop structure at the bottom of the receiving groove 101b, which is used to prevent the holding body from falling out of the receiving groove 101b.

[0112] Furthermore, the outer sleeve 105 is provided with a holding block 105a protruding from the inner wall. When the outer sleeve 105 moves to the first state, the holding block 105a is located at the receiving groove 101b and holds the clamping body. By providing the holding block on the inner wall of the outer sleeve, there is space for the clamping body in other areas except the holding block. Except in the first state, the clamping body will not be held and remain in the first state, and the clamping body can also be completely returned to the receiving groove 101b.

[0113] On the basis of the above technical solution, the side of the abutting block 105a close to the ferrule receiving seat 42 has an inclined surface 111. When the first state is switched to the second state, the inclined surface 111 can guide the holding body downward, making the switching between the first state and the second state smoother.

[0114] Further, the docking portion 40 includes a first section close to the ferrule receiving seat 42 and a second section further extended from the first section, and the radius of the first section is greater than that of the second section. One end of the outer sleeve 105 close to the ferrule receiving seat 42 is sleeved on the first section. When switching between the first state and the second state, the abutment block 105a moves axially on the second section. The diameter difference between the first section and the second section is to form a space for the abutment block 105a to move, reduce the diameter of the outer sleeve 105, and thus reduce the diameter of the entire adapter 1.

[0115] Further, the rear end surface of the inner sleeve 106 is respectively held against the outer sleeve 105 by the outer spring 107. When the outer sleeve 105 is in the first state, the inner sleeve 106 keeps the outer sleeve 105 in the first state by the outer spring 107. It is conceivable that the outer spring 107 can also be replaced by other elastic elements, such as an elastic body, repelling magnets, etc. In this embodiment, a spring is preferably used.

[0116] The outer spring 107 is used to push the outer sleeve 105 forward when the inner sleeve 106 is pushed by the pushing device 206 until the holding body is stuck in the groove. At this time, the outer spring 107 keeps the outer sleeve 105 in place, that is, the outer spring 107 keeps the outer sleeve 105 in the first state, so that the abutment block 105a abuts against the holding body, preventing the holding body from retreating after the connector 2 is subjected to tension, causing the connector 2 and the adapter 1 to separate when they need to be connected.

[0117] Embodiment 9:

[0118] Please refer to Figure 1-Figure 19 As an optional embodiment, an axially arranged inner spring 108 is provided between the inner sleeve 106 and the docking portion 40. The inner spring 108 is provided to allow the inner sleeve 106 and the outer sleeve 105 to rebound backward as a whole after the connector and the adapter are disconnected.

[0119] Further, the elastic force of the outer spring 107 is greater than the elastic force of the inner spring 108. The elastic force of the outer spring 107 is greater than the elastic force of the inner spring 108.

[0120] Specifically, the inner sleeve 106 is assembled between the outer sleeve 105 and the docking portion 40, and the inner sleeve 106, the outer sleeve 105 and the docking portion 40 can slide relative to each other in pairs, so that the adapter 1 can switch between the first state and the second state.

[0121] Further, a retaining ring is provided at the end of the surface of the outer sleeve 105 and the butt joint 40 facing the inner sleeve 106. The retaining ring prevents the inner sleeve 106 from being pushed out of the outer sleeve 105 by the inner spring 108 and the outer spring 107.

[0122] Embodiment 10:

[0123] Please refer to Fig. 20 As an optional embodiment. The clamping body includes an elastic arm 43 extending from the docking portion 40, and a clamping block 44 is provided at the end of the elastic arm 43; when the outer sleeve 105 is in the first state, the elastic arm 43 is in a state of not sending elastic deformation, and the clamping block 44 is completely received in the receiving groove 101b. When the outer sleeve 105 is in the first state, the outer sleeve 105 is held against the clamping block 44, and the clamping block 44 partially extends into the docking channel 101a.

[0124] Compared with the clamping method using steel balls, the clamping block 44 is provided at the end of the elastic arm 43 so that the clamping block 44 can automatically withdraw from the docking channel 101a when the outer sleeve 105 retreats to the second state. However, due to the friction of the elastic arm 43 on the outer sleeve 105, the conversion between the first state and the second state requires a greater force.

[0125] Embodiment 11:

[0126] The present invention further provides a quick-plug optical fiber connection assembly, comprising an adapter 1 and a connector 2 , wherein the adapter 1 comprises an adapter body 101 , a holding body, an outer sleeve 105 and an inner sleeve 106 .

[0127] At least one end of the adapter body 101 is a tubular docking portion 40, the docking portion 40 is provided with a docking channel 101a, the adapter body 101 is provided with a ferrule receiving seat 42 for accommodating the optical fiber ceramic ferrule 203, the ferrule receiving seat 42 is located in the middle of the adapter body 101, and the docking portion 40 is provided with a receiving groove 101b connected to the docking channel 101a;

[0128] The card holder is movably received in the receiving groove 101b;

[0129] The outer sleeve 105 is movably sleeved outside the docking portion 40. The outer sleeve 105 has a first state and a second state. When the outer sleeve 105 is in the first state, the outer sleeve 105 abuts against the holding body, and a part of the holding body is irreversibly extended into the docking channel 101a. When the outer sleeve 105 is in the second state, a clearance space 101c is provided between the outer sleeve 105 and the opening of the receiving groove 101b for the holding body to exit the docking channel 101a.

[0130] An inner sleeve 106 movably assembled on the docking portion 40, the inner sleeve 106 is used to keep the outer sleeve 105 in the first state after being pushed in the insertion direction;

[0131] Connector 2 includes:

[0132] The main body 201a is provided with a cavity 201b;

[0133] An optical cable 215 is assembled in the main body 201a, and the optical cable 215 extends into the cavity 201b;

[0134] The inserting part 201c is located at one end of the main body 201a. The end of the inserting part 201c away from the main body 201a is provided with an optical fiber ceramic ferrule 203. The inserting part 201c is provided with a groove for engaging with an adapter matching the connector.

[0135] The outer periphery of the inserting portion 201c is provided with a pushing device 206, and the pushing device 206 is used to push the inner sleeve 106 of the adapter matched with the connector; at the same time,

[0136] When the connector 2 is inserted into the adapter 1, the ejection device 206 abuts against the inner sleeve 106, and the outer sleeve 105 remains in the first state, and a portion of the clamping body irreversibly extends into the docking channel 101a and is clamped in the groove.

[0137] The connection method using the clamping body and the groove has a stronger locking force than the buckle locking device used in the existing standard connector, is more suitable for complex outdoor scenes, and can withstand greater pull-off force. In addition, the insertion force required for insertion is small, the locking force is large when locking, and the connector can be pulled out smoothly when unplugging, with a small pulling force, and has the characteristics of convenient operation, which effectively solves the problems of inconvenient plug-in and unplugging operations and insufficient locking force of existing optical fiber connection components.

[0138] Example 12: See Figures 1 to 8 As shown, an embodiment of the present invention provides a quick-plug optical fiber connection assembly, including an adapter 1 and a connector 2. Figure 1 As shown, the adapter 1 includes an adapter body 101 whose two ends can be connected to the connector 2. The adapter body 101 contains a ceramic sleeve 102 required for connecting to the optical fiber ceramic ferrule 203 of the connector 2. Any end of the adapter body 101 has a locking structure, and the locking structure includes a directional limiting groove 103 opened on the inner side wall of the adapter body 101. Figure 2 As shown in the figure, the steel ball 104 embedded in the outer wall of the adapter body 101 is preferably a stainless steel ball, an outer sleeve 105 sleeved on the outside of the adapter body 101 and pressed on the steel ball 104, and an inner sleeve 106 arranged between the adapter body 101 and the outer sleeve 105; the directional limiting grooves 103 are evenly distributed in a plurality of ways along the circumference of the adapter body 101. In this embodiment, there are three evenly distributed ways, and the specific number can be set according to actual conditions. It is used to locate the rotation direction of the connector 2 when docking, ensure accurate docking with the end face of the optical fiber ceramic ferrule 203 of the connector 2 and guide the docking of the connector 2; the rear end face of the inner sleeve 106 is respectively connected to the outer spring 107 and the inner spring 108 through the outer spring 107 and the inner spring 108. The sleeve 105 and the adapter body 101 are against each other, and the elastic force of the outer spring 107 is greater than the elastic force of the inner spring 108. The front end face of the inner sleeve 106 is against the outer sleeve 105 and the adapter body 101 through the outer retaining ring 109 and the inner retaining ring 110 respectively, so as to ensure that the inner sleeve 106 will not pop out relative to the outer sleeve 105 and the adapter body 101 under the action of the two springs; and the outer sleeve 105, the adapter body 101 and the inner sleeve 106 can slide relative to each other along the insertion direction of the connector 2, and the inner side wall of the outer sleeve 105 has a slope 111, which is used to press the steel ball 104 into the connector 2 through the slope 111 after the outer sleeve 105 slides to lock the connector 2.

[0139] See also Figure 3 As shown, the connector 2 includes a plug body 201, the plug body 201 contains an optical fiber 202, the front end of the optical fiber 202 is connected to an optical fiber ceramic ferrule 203, and the front end surface of the optical fiber ceramic ferrule 203 is exposed outside the plug body 201. Figure 4 As shown, the outer surface of the plug body 201 is provided with directional limiting protrusions 204 that are compatible with the directional limiting grooves 103 of the adapter 1. The specific distribution position and number of the protrusions are compatible with the directional limiting grooves, and are used to cooperate with the directional limiting grooves 103 during docking to play a guiding role and ensure the rotation direction of the connector 2 during docking; a plug jacket 205 is provided on the outside of the plug body 201, and the front end of the plug jacket 205 has a protruding push-up device 206, which is used to cooperate with the inner sleeve 106 of the adapter 1 during docking to push the inner sleeve 106 to slide along the insertion direction relative to the adapter body 101; the outer surface of the plug body 201 is provided with a circle of annular grooves 207 along its circumference, which are used to cooperate with the steel balls 104 during docking to play a clamping and locking role. When the adapter 1 is docked with the connector 2, the pushing device 206 of the connector 2 pushes the inner sleeve 106 of the adapter 1 to slide along the insertion direction relative to the adapter body 101. At the same time, the outer sleeve 105 also slides along the insertion direction of the connector 2 under the action of the outer spring 107. After sliding, the outer sleeve 105 presses the steel ball 104 into the annular groove 207 of the connector 2 through the inclined surface 111 of its inner wall and clamps it, thereby achieving the purpose of locking the connector 2.

[0140] Specifically, see Figure 5 As shown, when the adapter 1 and the connector 2 are in a state before docking, the outer spring 107 and the inner spring 108 of the adapter 1 are both in an uncompressed state. The uncompressed state referred to here does not include the pre-compressed state of the spring after assembly. Generally, the spring is in a pre-compressed state relative to its original length after installation; the outer sleeve 105 of the adapter 1 is in a state where the steel ball 104 is not compressed. At this time, the steel ball 104 can move in the gap between the outer sleeve 105 and the adapter body 101, ensuring that the steel ball 104 will not affect the insertion of the connector 2 before the annular groove 207 of the connector 2 reaches the predetermined position.

[0141] See also Figure 6 As shown, when the adapter 1 and the connector 2 are in the process of docking and insertion, the protruding push device 206 on the connector 2 pushes the inner sleeve 106 of the adapter 1 to slide in the direction of the connector 2 insertion, and because the elastic force of the outer spring 107 is greater than the elastic force of the inner spring 108, the sliding of the inner sleeve 106 first compresses the inner spring 108, and the outer sleeve 105 is pushed by the outer spring 107 to slide in the direction of the connector 2 insertion. When the connector 2 is in the predetermined position, the outer sleeve 105 is also in a state of pressing the steel ball 104. At this time, the sliding outer sleeve 105 presses the steel ball 104 into the annular groove 207 of the connector 2 through the inclined surface 111 of its inner side wall and clamps it. The steel ball 104 cooperates with the annular groove 207 of the connector 2, so that the adapter 1 and the connector 2 cannot move, thereby completing the locking operation of the connector 2.

[0142] See also Figure 7 As shown, when the connector 2 is to be pulled out from the adapter 1, the outer sleeve 105 of the adapter 1 is first slid by hand in the direction of the connector 2 being pulled out, so that the steel ball 104 can move up and down in the gap between the outer sleeve 105 and the adapter body 101, in order to unlock the steel ball 104 and the annular groove 207 of the connector 2. Figure 8 As shown, when the steel ball 104 is in the unlocked state, the connector 2 continues to be moved in the direction of being pulled out. At this time, the steel ball 104 is disengaged from the annular groove 207 of the connector 2 and has no locking function. The connector 2 can be smoothly pulled out from the adapter 1.

[0143] Through the above operation, the plugging and unplugging operation of the adapter 1 and the connector 2 can be completed simply and quickly, and the locking force is reliable, which effectively solves the problems of inconvenient plugging and unplugging operation and insufficient locking force of existing optical fiber connection components.

[0144] On the basis of the above, in order to solve the problem that the existing standard connector 2 and adapter 1 have poor dust and water resistance, see Fig. 9 As shown, at least one O-ring 208 is embedded in the contact surface between the plug body 201 of the connector 2 and the adapter body 101. The design of the O-ring 208 makes the connector 2 and the adapter 1 have a certain degree of contact. Fig. 9 The area to the left of the middle O-ring forms a closed space, which ensures that the connector 2 and the adapter 1 can achieve good dustproof and water-repellent effects after docking; in addition, when the adapter 1 is installed on the installation interface, the contact surface between the adapter body 101 and the installation interface is provided with a sealing flat gasket 112, and the design of the sealing flat gasket 112 also ensures that the adapter 1 and the installation interface have good dustproof and water-repellent effects. In this embodiment, the O-ring 208 and the sealing flat gasket 112 are made of rubber or silicone. In addition, two O-rings 208 are provided to form a double O-ring 208 design.

[0145] Furthermore, it is understood that in practical applications, Fig.10 As shown, when the adapter 1 is not connected to the connector 2, a protective plug 3 can be inserted into the adapter 1. The protective plug 3 has a push-out device 206, an annular groove 207 and an O-ring 208 with the same structure as those in the connector 2. Similarly, it can be understood that in actual applications, Fig.11 As shown, when the connector 2 is not docked with the adapter 1, a protective cap 4 can be sleeved on the plug body 201 of the connector 2, and the protective cap 4 is connected to the plug jacket 205 of the connector 2 through threads.

[0146] Furthermore, it is understandable that in practical applications, the optical fiber connection assembly can be designed as a "single-end waterproof locking type" or a "double-end waterproof locking type" according to the use requirements. Fig.12 As shown, the "single-end waterproof locking type" means that one end of the adapter body 101 has a locking structure for docking with the above-mentioned dustproof, waterproof and locking connector 2, and the other end does not have a locking structure for docking with the existing standard connector 2. Fig.13 As shown, the "double-end waterproof locking type" means that both ends of the adapter body 101 have locking structures, both of which are used to connect with the above-mentioned connector 2 with dustproof, waterproof and locking functions.

[0147] In addition, it is understandable that the adapter body 101 of the present invention can be selected from the current industry standard adapter body 101, including SCSquare Connector, square fiber connector type, FCFerule Connector, sleeve connector type, single LCLucent Connector, Lucent connector type, double LC type, E2000 type, etc. According to the different end face grinding methods of the optical fiber ceramic ferrule 203, the connector 2 can be divided into UPC type ferrule body end face as super physical end face and APC type ferrule body end face as angle physical end face. Therefore, the connector 2 of the present invention adapted to the industry standard adapter body 101 can be divided into SC-APC / UPC type, FC-APC / UPC type, single LC-APC / UPC type, double LC-APC / UPC type, E2000-APC / UPC type, etc.

[0148] In order to better understand the present invention, the above optical fiber connection assembly is further described in detail below through several specific embodiments.

[0149] See also Fig.14 As shown, it shows an embodiment of a connector 2, which can be divided into UPC type and APC type according to different end surface grinding methods of the optical fiber ceramic ferrule 203. The connector 2 specifically includes:

[0150] O-type sealing ring 208, which is embedded in the plug body 201 and made of silicone material, and is provided with two circles of O-type sealing ring 208 according to the waterproof degree requirement;

[0151] The optical fiber ceramic ferrule 203 can be divided into UPC and APC according to the polishing method of its end face;

[0152] The ceramic ferrule buffer spring 217 is used to provide buffer protection for the optical fiber ceramic ferrule 203 when the connector 2 is docked with the adapter 1;

[0153] The plug body 201 has the following features: an O-ring 208 installation groove, an annular groove 207, and a directional limiting protrusion 204;

[0154] The plug cover 205 is used to protect the stripped optical fiber cable. A protruding push device 206 is provided at the front end of the plug cover 205 to push the inner sleeve 106 on the adapter 1 when the adapter 1 is inserted.

[0155] The plug middle tube 209 is used to protect the stripped optical fiber cable;

[0156] The plug tail tube 210 is used to protect the stripped optical fiber cable and cooperate with the aluminum cup 213 to fix the outer skin of the optical cable 215;

[0157] The optical fiber 202 is the exposed optical fiber after the optical cable 215 is stripped;

[0158] The aluminum tube 211 is used to cooperate with the aluminum cup 213 to fix the aramid sand or tensile metal wire in the optical cable 215;

[0159] The inner waterproof O-type sealing ring 212 is used to prevent water at the tail end of the connector 2 from entering the plug middle tube 209 and the plug tail tube 210, thereby ensuring the waterproof effect inside the connector 2;

[0160] The aluminum cup 213 is used to cooperate with the plug tail tube 210 and the aluminum tube 211 to fix the outer skin of the optical cable 215 and the aramid sand or tensile metal wire respectively;

[0161] The optical cable tail sheath 214 is used for buffering when the optical cable 215 is bent to prevent damage to the optical fiber caused by excessive bending, and can be made of soft plastic or metal spring;

[0162] Optical cable 215;

[0163] The heat shrink tube 216 is used to seal the gap between the optical cable and the parts after the optical cable is fixed. Its protection performance can reach IP68. IP68 is the highest level of the connector waterproof grade standard.

[0164] See also Fig.15 As shown, it shows an embodiment after the above connector 2 is docked with the adapter 1. As shown in the figure, after the connector 2 is docked with the adapter 1, the outer sleeve 105 of the adapter 1 presses the steel ball 104 into the annular groove 207 of the connector 2 through the inclined surface 111 of its inner wall and clamps it, and the steel ball 104 cooperates with the annular groove 207 of the connector 2, so that the adapter 1 and the connector 2 cannot move, thereby achieving the effect of clamping and locking, and the locking force is reliable.

[0165] See also Fig.16As shown in FIG. 4 , an embodiment of a protective cap 4 is shown. The left end of the protective cap 4 is provided with a ring structure for fixing a traction rope or other traction tools of the optical fiber cable in the pipeline. Fig.17 As shown, it shows an embodiment in which the protective cap 4 is mounted on the connector 2. As shown in the figure, the protective cap 4 is connected to the plug jacket 205 of the connector 2 through threads, and thread glue is added to the threads to ensure firmness and waterproofness after connection.

[0166] See also Fig.18 As shown in FIG. 1 , an embodiment of a protective plug 3 is shown. As shown in the figure, the protective plug 3 has a push-out device 206, an annular groove 207 and an O-ring 208 with the same structure as the connector 2 described above. Fig.19 As shown, it shows an embodiment of the above-mentioned protective plug 3 being inserted into the adapter 1. As shown in the figure, after the above-mentioned protective plug 3 is inserted into the adapter 1, the pushing device 206 of the protective plug 3 pushes the inner sleeve 106 of the adapter 1, thereby making the outer sleeve 105 of the adapter 1 slide in the insertion direction, and presses the steel ball 104 into the annular groove 207 of the above-mentioned protective plug 3 through the inclined surface 111 of its inner wall and clamps it. The steel ball 104 cooperates with the annular groove 207 of the protective plug 3, so that the adapter 1 and the protective plug 3 cannot move, thereby achieving the effect of clamping and locking, and the locking force is reliable.

[0167] The present invention is not limited to the above-mentioned embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

[0168] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. An adapter, characterized in that: The adapter comprises: An adapter body (101), wherein at least one end of the adapter body (101) is provided with a cylindrical docking portion (40), the docking portion (40) is provided with a docking channel (101a), the adapter body (101) is provided with a ferrule receiving seat (42) for accommodating an optical fiber ceramic ferrule (203), the ferrule receiving seat (42) extends into the docking channel (101a), and a slot is formed between the ferrule receiving seat (42) and the inner wall of the docking portion (40), the slot is used to accommodate the end of the insertion portion (201c) of a connector matching the adapter, and the docking portion (40) is provided with a receiving groove (101b) communicating with the docking channel (101a); A holding body is movably received in the receiving groove (101b) and is used to hold a connector matching the adapter, and the holding body is configured such that when the connector and the adapter are connected, the holding body is located behind the sealing structure on the end of the insertion portion (201c) along the insertion direction.

2. An adapter as claimed in claim 1, characterized in that: Also includes: an outer sleeve (105) movably sleeved outside the docking portion (40), the outer sleeve (105) having a first state and a second state, when the outer sleeve (105) is in the first state, the outer sleeve (105) abuts against the holding body and allows a portion of the holding body to extend irreversibly into the docking channel (101a), when the outer sleeve (105) is in the second state, a clearance space (101c) is provided between the outer sleeve (105) and the opening of the receiving groove (101b) for the holding body to exit the docking channel (101a); An inner sleeve (106) is movably assembled on the docking portion (40), and the inner sleeve (106) is used to keep the outer sleeve (105) in the first state after being pushed in the insertion direction.

3. An adapter as claimed in claim 2, characterized in that: The outer sleeve (105) is provided with a supporting block (105a) protruding from the inner wall. When the outer sleeve (105) is in a first state, the supporting block (105a) is located at the receiving groove (101b) and supports the clamping body.

4. An adapter according to claim 3, characterized in that: The supporting block (105a) has an inclined surface (111) on one side close to the insert receiving seat (42).

5. An adapter according to claim 2, characterized in that: The clamping body comprises an elastic arm (43) extending from the docking portion (40), and a clamping block (44) is provided at the end of the elastic arm (43); at the same time, When the outer sleeve (105) is in the first state, the elastic arm (43) is in a state of not sending elastic deformation, and the holding block (44) is completely received in the receiving groove (101b). When the outer sleeve (105) is in the first state, the outer sleeve (105) is held against the holding block (44), and the holding block (44) partially extends into the docking channel (101a).

6. An adapter according to claim 1, characterized in that: The clamping body is a steel ball (104), the receiving groove (101b) is a cylindrical hole, and a stopper is provided at the bottom of the receiving groove (101b), the stopper is used to prevent the steel ball (104) from completely falling out of the receiving groove (101b).

7. An adapter according to claim 1, characterized in that: The sealing structure is an O-type sealing ring (208).

8. An adapter, characterized in that: The adapter comprises: An adapter body (101), wherein at least one end of the adapter body (101) is provided with a cylindrical docking portion (40), the docking portion (40) is provided with a docking channel (101a), the adapter body (101) is provided with a ferrule receiving seat (42) for accommodating an optical fiber ceramic ferrule (203), the ferrule receiving seat (42) extends into the docking channel (101a), and a slot is formed between the ferrule receiving seat (42) and the inner wall of the docking portion (40), the slot is used to accommodate an end of a connector matching the adapter, the docking portion (40) is provided with a receiving groove (101b) communicating with the docking channel (101a), and the position where the receiving groove (101b) communicates with the docking channel (101a) is not the area where the slot is located; A holding body, the holding body is movably received in the receiving groove (101b) and is used for holding a connector matching the adapter.

9. An adapter, characterized in that: The adapter comprises: An adapter body (101), wherein at least one end of the adapter body (101) is provided with a cylindrical docking portion (40), the docking portion (40) is provided with a docking channel (101a), the adapter body (101) is provided with a ferrule receiving seat (42) for accommodating an optical fiber ceramic ferrule (203), the ferrule receiving seat (42) extends into the docking channel (101a), and a slot is formed between the ferrule receiving seat (42) and the inner wall of the docking portion (40), the slot is used to accommodate an end of a connector matching the adapter, and the docking portion (40) is provided with a receiving groove (101b) communicating with the docking channel (101a); A holding body is movably received in the receiving groove (101b) and is used to hold a connector matching the adapter, and the holding body is spaced apart from the end face of the ferrule receiving seat (42) extending into the docking channel (101a) in a direction away from the ferrule receiving seat (42).

10. A quick-plug optical fiber connection assembly, characterized in that: The quick-plug optical fiber connection assembly comprises: A connector comprising: A main body (201a), wherein the main body (201a) is provided with a cavity (201b); An optical cable (215) is assembled in the main body (201a), and the optical cable (215) extends into the cavity (201b); An insertion portion (201c) is located at one end of the main body (201a), an end of the insertion portion (201c) away from the main body (201a) is provided with an optical fiber ceramic ferrule (203), a sealing structure and a groove for clamping are provided on the insertion portion (201c), and along the insertion direction, the groove is located behind the sealing structure; An adapter comprising: An adapter body (101), wherein at least one end of the adapter body (101) is provided with a cylindrical docking portion (40), the docking portion (40) is provided with a docking channel (101a), the adapter body (101) is provided with a ferrule receiving seat (42) for accommodating an optical fiber ceramic ferrule (203), the ferrule receiving seat (42) extends into the docking channel (101a), and a slot is formed between the ferrule receiving seat (42) and the inner wall of the docking portion (40), the slot is used to accommodate the end of the insertion portion (201c) of the connector, and the docking portion (40) is provided with a receiving groove (101b) that is connected to the docking channel (101a); A clamping body, the clamping body is movably received in the receiving groove (101b) and is used for engaging with the groove.

11. A quick-plug optical fiber connection assembly as claimed in claim 10, characterized in that: The adapter also includes: an outer sleeve (105) movably sleeved outside the docking portion (40), the outer sleeve (105) having a first state and a second state, when the outer sleeve (105) is in the first state, the outer sleeve (105) abuts against the holding body and allows a portion of the holding body to extend irreversibly into the docking channel (101a), when the outer sleeve (105) is in the second state, a clearance space (101c) is provided between the outer sleeve (105) and the opening of the receiving groove (101b) for the holding body to exit the docking channel (101a); An inner sleeve (106) is movably assembled on the docking portion (40), and the inner sleeve (106) is used to keep the outer sleeve (105) in the first state after being pushed in the insertion direction.

12. A quick-plug optical fiber connection assembly as claimed in claim 11, characterized in that: A pushing device (206) is provided on the periphery of the insertion portion (201c), and the pushing device (206) is used to push the inner sleeve (106) of the adapter matched with the connector.

13. A quick-plug optical fiber connection assembly as claimed in claim 12, characterized in that: The ejection device (206) is an ejection block provided on the outer surface of the insertion portion (201c), or, The ejection device (206) is an ejection plate spaced apart from the outer surface of the insertion portion (201c).

14. A quick-plug optical fiber connection assembly as claimed in claim 10, characterized in that: The groove is an annular groove arranged along the circumference of the plug body (201), or the groove is a hemispherical groove.

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