Connector and optical fiber connection assembly

Abstract

The invention discloses a connector and an optical fiber connection assembly, and relates to optical fiber communication, the connector comprises a connector main body, the connector main body comprises an insertion part, and the insertion part is provided with a first protrusion used for being clamped with a buckle of an adapter; the elastic piece is arranged on the insertion part in a sleeving manner; the unlocking ring is arranged on the insertion part in a sleeving manner, a radial gap is formed between the unlocking ring and the insertion part, and the unlocking ring is used for covering the clamping part; the connector jacket sleeves the insertion part and is used for driving the unlocking ring to compress the elastic piece, so that the unlocking ring is separated from the clamping part; the spatial distance relationship among the first bulge, the unlocking ring and the connector jacket meets the following conditions: when the connector and the adapter are locked, the buckle can deform and abut against the unlocking ring; after the connector and the adapter are locked, the buckle can extend into the radial gap. When the connector is in butt joint with the adapter, firm tensile resistance can be guaranteed.

Description

[0001] This application is a divisional application with the application date of September 9, 2020, application number 202010940734.3, and invention name "A connector and optical fiber connection assembly". Technical Field

[0002] The invention relates to the field of optical fiber communication, and in particular to a connector and an optical fiber connection assembly. Background Art

[0003] With the large-scale deployment of FTTH (Fiber To The Home), pre-connection products that reduce construction costs, lower construction technical requirements, and simplify construction difficulty are becoming more and more widely used. However, most of the fiber optic connectors and adapters currently used are industry standard connectors and adapters. The original intention of the design of this type of connector and adapter is to solve the fiber optic connection indoors or in a protective box (box). When opening the service, it is necessary to open the box, perform welding, and fix the optical cable in the box. In order to avoid opening the box, welding, and fixing the optical cable when opening the service, fiber optic connectors and adapters with good waterproof performance that can be pre-installed outside the box are usually selected.

[0004] At present, most of the outdoor optical fiber connectors and adapters on the market use a screw-type locking method. However, due to its own characteristics, the screw-type locking method requires finger operation space to be reserved around the connector and adapter. In a limited installation space, especially when the density requirement is high, the operation is very difficult. Some plug-in connectors and adapters are limited by their own structure, and the axial tensile force of the optical fiber connector is difficult to meet the requirements. Summary of the invention

[0005] The present application provides a connector and an optical fiber connection assembly, which can ensure the tensile strength when the connector and the adapter are connected.

[0006] In a first aspect, an embodiment of the present application provides a connector, including:

[0007] A connector body, comprising an insertion portion, the insertion portion being provided with a first protrusion for engaging with a buckle of an adapter;

[0008] An elastic member, which is sleeved on the insertion portion;

[0009] An unlocking ring, which is sleeved on the insertion part, with a radial gap between the unlocking ring and the insertion part, and is used to cover the clamping part;

[0010] A connector jacket, which is sleeved on the inserting portion and is used to drive the unlocking ring to compress the elastic member so that the unlocking ring is separated from the clamping portion;

[0011] And the spatial distance relationship between the first protrusion, the unlocking ring and the connector housing satisfies:

[0012] When the connector and the adapter are locked, the buckle can be deformed and abut against the unlocking ring; after the connector and the adapter are locked, the buckle can extend into the radial gap.

[0013] In combination with the first aspect, in one embodiment, a contact surface where the insertion portion and the buckle are in contact after the buckle is buckled with the first protrusion is used as a reference line;

[0014] Define the thickness of the buckle as L1, the distance from the first protrusion to the inner surface of the connector housing as L4, and the distance from the lower surface of the extension portion of the unlocking ring to the reference line as L6;

[0015] L4≥L1 is set so that when the connector and the adapter are locked, the buckle can be deformed and abut against the unlocking ring;

[0016] It is set that L6≥L1, so that after the connector and the adapter are locked, the buckle can extend into the radial gap.

[0017] In combination with the first aspect, in one implementation, the distance from the cantilever of the buckle to the reference line is defined as L2, and the height of the first protrusion relative to the reference line is defined as L3, such that L3≥L2.

[0018] In combination with the first aspect, in one implementation, the distance from the inner surface of the connector housing to the reference line is defined as L5, and the distance from the upper surface of the unlocking ring to the reference line is defined as L7, such that L5≥L7.

[0019] In combination with the first aspect, in one implementation, a housing protrusion is provided on the connector housing, and a second protrusion matching the housing protrusion for limiting position is provided on the insertion portion.

[0020] In combination with the first aspect, in one implementation, the unlocking ring includes:

[0021] An annular body, which is used to cooperate with the outer sleeve protrusion so that the unlocking ring moves with the connector outer sleeve and compresses the elastic member;

[0022] Two extending parts are arranged opposite to each other, and are both arranged on the annular body and extend toward one side of the axial direction of the annular body, and are used to cover the buckle when being snapped into place.

[0023] In combination with the first aspect, in one embodiment, two recesses are provided on the circumference of the annular body, the positions of which correspond to the positions of the two extensions respectively, and the height of the recesses is greater than or equal to the height of the first protrusion.

[0024] In combination with the first aspect, in one embodiment, a step is respectively provided at both ends of each of the recesses, and the step is used to cooperate with two side planes on the connector body located between the first protrusion and the second protrusion.

[0025] In combination with the first aspect, in one embodiment, the outer sleeve protrusion includes:

[0026] Two extension walls are arranged on the inner wall of the connector housing and extend in the axial direction of the connector housing. The two extension walls are arranged at intervals to form a channel for the extension part to pass through.

[0027] In combination with the first aspect, in one embodiment, the extension wall is further provided with a groove which cooperates with the second protrusion for positioning.

[0028] In a second aspect, an embodiment of the present application provides an optical fiber connection assembly, comprising:

[0029] An adapter comprising:

[0030] An adapter body, on which a buckle is provided;

[0031] A connector comprising:

[0032] A connector body, comprising an insertion portion, the insertion portion being provided with a first protrusion for engaging with the buckle;

[0033] An elastic member, which is sleeved on the insertion portion;

[0034] An unlocking ring, which is sleeved on the insertion part, with a radial gap between the unlocking ring and the insertion part, and is used to cover the clamping part;

[0035] A connector jacket, which is sleeved on the inserting portion and is used to drive the unlocking ring to compress the elastic member so that the unlocking ring is separated from the clamping portion;

[0036] And the spatial distance relationship between the first protrusion, the unlocking ring and the connector housing satisfies:

[0037] When the connector and the adapter are locked, the buckle can be deformed and abut against the unlocking ring; after the connector and the adapter are locked, the buckle can extend into the radial gap.

[0038] In conjunction with the second aspect, in one implementation, the method further includes:

[0039] A contact surface where the insertion portion and the buckle are in contact after the buckle is buckled with the first protrusion is used as a reference line;

[0040] Define the thickness of the buckle as L1, the distance from the first protrusion to the inner surface of the connector housing as L4, and the distance from the lower surface of the extension portion of the unlocking ring to the reference line as L6;

[0041] L4≥L1 is set so that when the connector and the adapter are locked, the buckle can be deformed and abut against the unlocking ring;

[0042] It is set that L6≥L1, so that after the connector and the adapter are locked, the buckle can extend into the radial gap.

[0043] In conjunction with the second aspect, in one implementation, the method further includes:

[0044] The distance from the cantilever of the buckle to the reference line is defined as L2, and the height of the first protrusion relative to the reference line is defined as L3, such that L3≥L2.

[0045] In conjunction with the second aspect, in one implementation, the method further includes:

[0046] The distance from the inner surface of the connector housing to the reference line is defined as L5, and the distance from the upper surface of the unlocking ring to the reference line is defined as L7, so that L5≥L7.

[0047] In a third aspect, an embodiment of the present application provides another connector, including:

[0048] A connector body, comprising an inserting portion, wherein the inserting portion is provided with a first protrusion for engaging with a matching adapter;

[0049] An elastic member, which is sleeved on the insertion portion;

[0050] An unlocking ring, which is sleeved on the insertion part and can move along the axial direction of the insertion part, and the unlocking ring is used to compress the elastic member when it is engaged with the adapter, and the elastic member provides a driving force to drive the unlocking ring to press the engagement part;

[0051] A connector jacket, which is sleeved on the insertion portion, and the connector jacket can move along the axial direction of the insertion portion, and can drive the unlocking ring to compress the elastic member so that the unlocking ring is separated from the clamping portion;

[0052] A drawstring is sleeved on the connector housing.

[0053] In combination with the third aspect, in one implementation, a jacket protrusion is provided on the connector jacket, and a second protrusion matching the jacket protrusion for limiting position is provided on the insertion portion.

[0054] In conjunction with the third aspect, in one implementation, the unlocking ring includes:

[0055] An annular body, which is used to cooperate with the outer sleeve protrusion so that the unlocking ring moves with the connector outer sleeve and compresses the elastic member;

[0056] An extension portion is arranged on the annular body and extends toward one side of the axial direction of the annular body. The extension portion is used to cooperate with the adapter so that the unlocking ring moves with the adapter and is used to press the clamping point when the clamping is in place.

[0057] In combination with the third aspect, in one embodiment, the outer sleeve protrusion includes:

[0058] Two extension walls are arranged on the inner wall of the connector housing and extend in the axial direction of the connector housing. The two extension walls are arranged at intervals to form a channel for the extension part to pass through.

[0059] In combination with the third aspect, in one embodiment, a third protrusion is further provided on the insertion portion, and one end of the elastic member abuts against the annular body, and the other end abuts against the third protrusion.

[0060] In conjunction with the third aspect, in one implementation, the connector further includes:

[0061] A connector cap is provided with a connector cap connecting rope, one end of which is connected to the connector body, and a first sealing ring is also provided in the connector cap to seal with the connector jacket.

[0062] Compared with the prior art, the advantages of the present invention are:

[0063] The connector of the present invention, after the unlocking ring is provided, when the connector and the adapter are docked, the unlocking ring will be firmly pressed at the clamping point of the connector and the adapter under the driving force provided by the elastic member, so that the buckle of the adapter cannot produce an opening deformation, thereby ensuring a strong tensile strength, which can meet the locking force required by most outdoor prefabricated end connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 An exploded view of an MPO connector according to an embodiment of the present invention;

[0065] Figure 2 An exploded view of an SC-type connector in an embodiment of the present invention;

[0066] Figure 3 is a cross-sectional view of an MPO type connector according to an embodiment of the present invention;

[0067] Figure 4 is a cross-sectional view of an SC-type connector according to an embodiment of the present invention;

[0068] Figure 5Schematic diagram of a connector body of an MPO type connector in an embodiment of the present invention;

[0069] Figure 6 Schematic diagram of a connector body of an SC-type connector in an embodiment of the present invention;

[0070] Figure 7 is a cross-sectional view of a connector housing according to an embodiment of the present invention;

[0071] Figure 8 Schematic diagram of an unlocking ring in an embodiment of the present invention;

[0072] Fig. 9 It is a schematic diagram of installing a connector cap on an MPO type / SC type connector according to an embodiment of the present invention;

[0073] Fig.10 A schematic diagram of removing a connector cap of an MPO connector according to an embodiment of the present invention;

[0074] Fig.11 A schematic diagram of removing a connector cap of an SC-type connector according to an embodiment of the present invention;

[0075] Fig.12 A schematic diagram of an MPO connector according to an embodiment of the present invention being connected to a standard MPO connector through an MPO adapter;

[0076] Fig.13 A schematic diagram of an SC-type connector in an embodiment of the present invention being connected to a standard SC connector through an SC-type adapter;

[0077] Fig.14 Schematic diagram of an MPO / SC connector according to an embodiment of the present invention;

[0078] Fig.15 An exploded view of an MPO adapter in an embodiment of the present invention;

[0079] Fig.16 An exploded view of an SC-type adapter in an embodiment of the present invention;

[0080] Fig.17 is a cross-sectional view of an MPO adapter according to an embodiment of the present invention;

[0081] Fig.18 is a cross-sectional view of an SC-type adapter according to an embodiment of the present invention;

[0082] Fig.19 Schematic diagram of an MPO adapter buckle in an embodiment of the present invention;

[0083] Fig. 20 Schematic diagram of an SC-type adapter buckle in an embodiment of the present invention;

[0084] Fig.21 A schematic diagram of the connection between an MPO adapter and an MPO connector according to an embodiment of the present invention;

[0085] Fig. 22 Schematic diagram of the docking of an SC-type adapter and an SC-type connector in an embodiment of the present invention.

[0086] In the figure:

[0087] 1-connector, 10-connector body, 101-insertion part, 102-first protrusion, 103-second protrusion, 104-third protrusion, 105-second sealing ring, 11-elastic member, 12-unlocking ring, 121-annular body, 122-extension part, 13-connector jacket, 131-jacket protrusion, 14-pull rope, 15-connector cap, 151-connector cap connecting rope, 152-connector cap hole, 153-first sealing ring, 16-connector tail sleeve, 17-connector hot melt tube, 18-connector front sleeve, 19-top holding member, 30-tail sleeve, 40-insert, 41-insert spring, 42-insert-dust cap, 50-connector optical cable, 60-crimping ring;

[0088] 2-adapter, 20-adapter body, 201-buckle, 202-third sealing ring, 203-ceramic sleeve, 204-sleeve holder, 21-adapter cap, 211-adapter cap connecting rope, 22-mounting nut, 221-flat washer. DETAILED DESCRIPTION

[0089] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0090] An embodiment of the present invention provides a connector. It is worth noting that the connector is classified into various forms according to the difference of its ferrule, specifically, MPO type, SC type or double LC type, etc.

[0091] See also Figures 1 to 4 As shown, the embodiments of the present invention will be described for MPO type and SC type connectors respectively. For MPO type and SC type connectors, they both include a connector body 10, an elastic member 11, an unlocking ring 12, a connector jacket 13, a drawstring 14, a connector cap 15, a connector tail sleeve 16, a connector hot melt tube 17, a connector front sleeve 18, a top holding member 19, a ferrule 40, a ferrule spring 41, a ferrule dust cap 42 and a connector optical cable 50.

[0092] See also Figure 5 and Figure 6As shown, in the connector of this embodiment, the connector body 10 includes an insertion portion 101, and the insertion portion 101 is mainly used to dock with a matching adapter. The insertion portion 101 is provided with a first protrusion 102 for engaging with the matching adapter. In this embodiment, the first protrusion 102 has two opposite inclined surfaces, or arc surfaces, or spherical surfaces.

[0093] A connector tail sleeve 16 is provided at the rear of the connector body 10. The connector body 10 and the connector tail sleeve 16 can be two independent parts or can be integrally formed. In this embodiment, both the MPO type and SC type connectors are shown as independent parts. A crimping ring 60 is provided on the outer periphery of the connector tail sleeve 16. The aramid yarn or reinforcing core inside the connector optical cable 50 is crimped and fixed by a crimping pliers, thereby fixing the connector optical cable 50. The connector hot melt tube 17 is then used to fix and seal it again, serving as an optical cable fixing crimping structure and a waterproof and dustproof sealing structure at the rear end of the connector. In addition, a tail sleeve 30 is also provided at the rear of the connector to protect the connector optical cable 50 from bending damage.

[0094] A connector front sleeve 18 is provided at the head end of the connector body 10. The connector body 10 and the connector front sleeve 18 can be two independent parts or can be integrally formed. The MPO type connector is shown as an independent part, and the SC type connector is shown as an integrally formed part.

[0095] A top holding piece 19 is provided in the cavity formed by the connector body 10, the connector tail sleeve 16 and the connector front sleeve 18. The top holding piece 19 and the connector tail sleeve 16 can be two independent parts or can be formed in one piece. A cavity is formed inside the top holding piece 19, through which the optical fiber can pass. A ferrule 40 and a ferrule spring 41 are installed in the space formed by the top holding piece 19 and the connector front sleeve 18. One end of the ferrule spring 41 abuts against the ferrule 40, and the other end abuts against the end face of the top holding piece 19. A ferrule dust cap 42 is provided at the front end of the ferrule 40. The ferrule 40 can be a single-core ferrule, a dual-core ferrule or a multi-core ferrule. Figure 1 In the figure, the MPO multi-core ferrule is shown. Figure 2 In the figure, the SC type single-core ferrule is shown.

[0096] The elastic member 11 is sleeved on the inserting portion 101. As a preferred implementation, the elastic member 11 in this embodiment may be a spring.

[0097] The unlocking ring 12 is sleeved on the insertion part 101 and can move axially along the insertion part 101. The unlocking ring 12 is used to compress the elastic member 11 when it is engaged with the adapter, and the elastic member 11 provides a driving force to drive the unlocking ring 12 to press the engagement point.

[0098] The connector sleeve 13 is sleeved on the inserting portion 101 , and the connector sleeve 13 can move along the axial direction of the inserting portion 101 , and can drive the unlocking ring 12 to compress the elastic member 11 , so that the unlocking ring 12 is separated from the clamping portion.

[0099] See also Figure 7 As shown, as a better embodiment, the connector outer sleeve 13 is provided with an outer sleeve protrusion 131, and the inserting portion 101 is provided with a second protrusion 103 for limiting and matching the outer sleeve protrusion 131. Therefore, through the joint action of the second protrusion 103 and the outer sleeve protrusion 131, the sliding of the connector outer sleeve 13 can be limited within a certain range.

[0100] In addition, a second sealing ring 105 is provided on the mating surface of the connector body 10 and the connector housing 13 to ensure the mating seal between the connector body 10 and the connector housing 13 .

[0101] Further, see Figure 8 As shown, in order to realize the role of the unlocking ring 12 when the connector and the adapter are engaged, the unlocking ring 12 in this embodiment includes an annular body 121 and an extension 122. The annular body 121 is used to cooperate with the outer sleeve protrusion 131, so that the unlocking ring 12 moves with the connector outer sleeve 13 and compresses the elastic member 11. The extension 122 is arranged on the annular body 121 and extends toward one side of the axial direction of the annular body 121. The extension 122 is used to cooperate with the adapter so that the unlocking ring 12 moves with the adapter and is used to press the engagement point when the adapter is engaged.

[0102] At the same time, in order to facilitate the unlocking of the connector and the adapter, the sleeve protrusion 131 in this embodiment includes two extension walls, which are arranged on the inner wall of the connector sleeve 13 and extend axially toward the connector sleeve 13, and the two extension walls are spaced apart to form a channel for the extension portion 122 to pass through.

[0103] When the connector housing 13 is pulled backward, the unlocking ring 12 can be driven to move backward together and compress the elastic member 11 through the two extended walls of the housing protrusion 131. When the external force is released, the elastic member 11 is reset, and the elastic member 11 and the connector housing 13 can be driven to reset together. It can be understood that when the external force acts only on the elastic member 11, only the elastic member 11 will slide relatively, and the connector housing 13 will not move.

[0104] Preferably, in order to further facilitate unlocking of the connector and the adapter, a pull rope 14 is further provided on the connector housing 13. When the pull rope 14 is pulled, the connector housing 13 can be moved to achieve unlocking.

[0105] In addition, in order to facilitate the installation and fixing of the elastic member 11 , a third protrusion 104 is further provided on the inserting portion 101 . One end of the elastic member 11 abuts against the annular body 121 , and the other end abuts against the third protrusion 104 .

[0106] As a preferred embodiment, see Figures 9 to 11 As shown, the connector 1 also includes a connector cap 15 to protect the ferrule 40. A connector cap hole 152 is provided at the front end of the connector cap 15 for pulling the optical cable during pipeline construction. The connector cap 15 is also provided with a first sealing ring 153 for waterproofing and dustproofing the fitting between the connector cap 15 and the connector jacket 13. The connector cap 15 is connected to the connector body 10 through a connector cap connecting rope 151 to prevent it from falling and being lost.

[0107] Correspondingly, see Figure 12 to Figure 14 As shown, an embodiment of the present invention provides an adapter 2, one end of the adapter 2 is connected to the connector 1 of the present invention, and the other end is connected to the standard connector 3. The standard connector 3 can be SC type, LC type or MPO type, etc. Therefore, the adapter 2 is divided into multiple forms according to the different types of compatible standard connectors 3, specifically MPO type, SC type, double LC type, etc.

[0108] See also Fig.15 and Fig.17 As shown, for the MPO type adapter, it includes an adapter body 20, a third sealing ring 202, an adapter cap 21, an adapter cap connecting rope 211, a mounting nut 22 and a flat washer 221. The adapter body 20 is provided with a buckle 201 for clamping with the connector 1, and the buckle 201 has two opposite inclined surfaces, or arc surfaces, or spherical surfaces.

[0109] At the butt end of the adapter body 20 and the connector 1, an adapter cap 21 and a third sealing ring 202 are provided for sealing the adapter 2, and an adapter cap connecting rope 211 is provided for connecting the adapter cap 21 and the adapter body 20 to prevent the adapter cap 21 from being lost.

[0110] A mounting nut 22 is provided at the butt end of the adapter body 20 and the standard connector 3 for mounting the adapter. A flat gasket 221 is provided between the mounting nut 22 and the flange structure of the adapter body 20 for sealing the adapter and the box body.

[0111] See also Fig.16 and Fig.18 As shown, for the SC type adapter, in addition to the above parts of the MPO type adapter, the adapter body 20 also includes a ceramic sleeve 203 and a sleeve holder 204. The remaining structure is similar to that of the MPO type adapter and will not be repeated here.

[0112] See also Figures 19 to 22 As shown, the locking and unlocking principles of the connector and the adapter in the present invention are introduced below:

[0113] When the connector 1 and the adapter 2 need to be locked, the connector jacket 13 is held and the connector 1 is inserted into the adapter 2. When the inclined surface of the first protrusion 102 on the insertion part 101 contacts the inclined surface of the buckle 201 on the adapter body 20, the buckle 201 will be pushed to open outward. As the insertion depth increases, the end face of the buckle 201 will abut against the end face of the unlocking ring 12 (the leftmost end of the extension part 122), and the unlocking ring 12 will be pushed to compress the elastic member 11 backward. When the connector 1 is inserted into place, the first protrusion 102 on the insertion part 101 and the buckle 201 on the adapter body 20 are buckled, and the buckle 201 is reset and separated from the mutual abutment with the end face of the unlocking ring 12. At this time, the unlocking ring 12 will move forward under the action of the elastic member 11. When it moves to the maximum stroke, the buckle 201 on the adapter body 20 is pressed. Due to the pressing effect of the unlocking ring 12, the buckle 201 cannot be deformed to open, thereby ensuring a strong tensile resistance.

[0114] When the connector 1 and the adapter 2 need to be unlocked, the connector jacket 13 is pulled backward by hand or by the pull rope 14, and the jacket protrusion 131 inside the connector jacket 13 drives the unlocking ring 12 to move backward. When the unlocking ring 12 is out of contact with the buckle 201, the connector body 10 moves backward and expands the buckle 201 through the first protrusion 102 to complete the unlocking action, and the connector 1 is continuously pulled until the connector 1 and the adapter 2 are completely out of contact, that is, the entire unlocking process is completed.

[0115] To sum up, after the unlocking ring 12 is set in the connector of the present invention, when the connector is docked with the adapter, under the driving force provided by the elastic member 11, the unlocking ring 12 will be firmly pressed at the joint between the connector and the adapter, so that the buckle 201 of the adapter cannot produce an opening deformation, thereby ensuring a strong tensile strength that can meet the locking force required by most outdoor prefabricated end connectors.

[0116] Meanwhile, the present invention also provides an optical fiber connection assembly, which includes a connector 1 and an adapter 2 .

[0117] Wherein, the connector 1 comprises:

[0118] The connector body 10 comprises an inserting portion 101, on which a first protrusion 102 for engaging with a matching adapter is provided;

[0119] An elastic member 11, which is sleeved on the inserting portion 101;

[0120] An unlocking ring 12, which is sleeved on the insertion portion 101 and can move along the axial direction of the insertion portion 101, and the unlocking ring 12 is used to compress the elastic member 11, and the elastic member 11 provides a driving force to drive the unlocking ring 12 to press the clamping joint;

[0121] A connector jacket 13, which is sleeved on the insertion portion 101 and forms a cavity with the connector body 10 to accommodate the elastic member 11 and the unlocking ring 12. The connector jacket 13 can move along the axial direction of the insertion portion 101 and drive the unlocking ring 12 to compress the elastic member 11 so that the unlocking ring 12 is separated from the clamping portion;

[0122] Adapter 2, comprising:

[0123] The adapter body 20 is provided with a buckle 201 that cooperates with the first protrusion 102 and is engaged with the first protrusion 102. The buckle 201 is used to push the unlocking ring 12 when being engaged with the connector 1.

[0124] Furthermore, a jacket protrusion 131 is provided on the connector jacket 13 , and a second protrusion 103 matching with the jacket protrusion 131 for position limiting is provided on the insertion portion 101 .

[0125] Further, the unlocking ring 12 comprises:

[0126] An annular body 121, which is used to cooperate with the outer sleeve protrusion 131, so that the unlocking ring 12 moves with the connector outer sleeve 13 and compresses the elastic member 11;

[0127] The extension portion 122 is arranged on the annular body 121 and extends toward one side of the axial direction of the annular body 121. The extension portion 122 is used to cooperate with the adapter so that the unlocking ring 12 moves with the adapter and is used to press the locking portion when it is locked in place.

[0128] Meanwhile, the present invention also provides another connector, including:

[0129] The connector body 10 comprises an inserting portion 101, on which a first protrusion 102 for engaging with a buckle 201 of an adapter is provided;

[0130] An elastic member 11, which is sleeved on the inserting portion 101;

[0131] An unlocking ring 12, which is sleeved on the inserting portion 101, with a radial gap between the unlocking ring 12 and the inserting portion 101, and is used to cover the clamping portion;

[0132] A connector sleeve 13, which is sleeved on the inserting portion 101 and is used to drive the unlocking ring 12 to compress the elastic member 11 so that the unlocking ring 12 is separated from the clamping portion;

[0133] And the spatial distance relationship between the first protrusion 102, the unlocking ring 12 and the connector housing 13 satisfies:

[0134] When the connector and the adapter are locked, the buckle 201 can be deformed and abut against the unlocking ring 12; after the connector and the adapter are locked, the buckle 201 can extend into the radial gap.

[0135] Specifically, see Figure 3 and Figure 4 As shown, after the buckle 201 is buckled with the first protrusion 102, the contact surface where the insertion portion 101 and the buckle 201 are in contact is used as the reference line;

[0136] Define the thickness of the buckle 201 as L1, the distance from the cantilever of the buckle 201 to the reference line as L2, the height of the first protrusion 102 relative to the reference line as L3, the distance from the first protrusion 102 to the inner surface of the connector jacket 13 as L4, the distance from the inner surface of the connector jacket 13 to the reference line as L5, the distance from the lower surface of the extension of the unlocking ring 12 to the reference line as L6, and the distance from the upper surface of the unlocking ring 12 to the reference line as L7;

[0137] The thickness of the buckle 201 refers to the thickness of the area between the unlocking ring 12 and the inserting portion 101 after the buckle 201 passes over the first protrusion 102, and the bottom of this area contacts the reference line.

[0138] It can be understood that in order to ensure smooth deformation of the buckle cantilever during locking and unlocking, the optimal design is L4 ≥ L1;

[0139] In order to ensure that the buckle 201 can smoothly enter under the extension of the unlocking ring 12 after locking, L6 ≥ L1 needs to be set, but in order to ensure sufficient pressing force, L6 = L1 is required, so the optimal setting is L6 = L1;

[0140] In order to achieve locking, the elastic arm of the buckle 201 returns to the initial state, and L3 ≥ L2 needs to be set. However, in order to save the size of the connector in the diameter direction as much as possible, the optimal setting is L3 = L2;

[0141] In order to further enhance the clamping force of the unlocking ring 12 on the buckle 201 and prevent the connector from being subjected to excessive tension, which may cause the extension part to deform and fail, the optimal design is L5=L7, so that the inner surface of the connector sleeve 13 presses the outer surface of the extension part, providing greater pressing force and preventing the extension part from deforming.

[0142] The following is an introduction to the docking and locking of connectors and adapters:

[0143] The docking between the connector and the adapter includes a first state, a second state and a third state. In order, the docking process goes through the first state, the second state and the third state in sequence.

[0144] When in the first state, the first protrusion 102 presses on the buckle 201 of the adapter, the end surface of the buckle 201 abuts against the end surface of the unlocking ring 12, and the unlocking ring 12 is located at the first docking position;

[0145] When in the second state, the buckle 201 passes over the first protrusion 102 and is engaged with the first protrusion 102, the end surface of the buckle 201 is separated from the end surface of the unlocking ring 12, and the unlocking ring 12 moves from the first docking position to the second docking position through the buckle 201 and compresses the elastic member 11;

[0146] When in the third state, the buckle 201 remains engaged with the first protrusion 102 , and the unlocking ring 12 returns from the second docking position to the first docking position through the elastic member 11 , and covers and maintains the buckle 201 .

[0147] Furthermore, in one embodiment, it also includes:

[0148] A connector sleeve 13, which is sleeved on the inserting portion 101 and can move axially along the inserting portion 101 and drive the unlocking ring 12 to move axially;

[0149] The unlocking of the connector and the adapter includes a fourth state and a fifth state;

[0150] When in the fourth state, the unlocking ring 12 is disengaged from the clamping position and is located in the first unlocking position;

[0151] When in the fifth state, the unlocking ring 12 is located at the second unlocking position, the elastic force of the elastic member 11 is greater than the deformation force of the buckle 201 , and the buckle 201 passes over the first protrusion 102 .

[0152] Furthermore, in one embodiment, a jacket protrusion 131 is provided on the connector jacket 13 , and a second protrusion 103 matching with the jacket protrusion 131 for limiting position is provided on the insertion portion 101 .

[0153] The housing protrusion 131 includes two extension walls, which are arranged on the inner wall of the connector housing 13 and extend in the axial direction of the connector housing 13, and the two extension walls are arranged at intervals to form a passage for the extension portion 122 to pass through. The extension wall is also provided with a groove for cooperating with the second protrusion 103 for positioning.

[0154] It is understandable that a jacket protrusion 131 is provided inside the connector jacket 13, and the jacket protrusions are symmetrically arranged and form a notch, so that the unlocking ring 12 can move forward and backward in the notch. A groove is also provided on the jacket protrusion 131, which cooperates with the second protrusion 103 on the insertion part 101 to achieve the positioning of the connector jacket 13 and the connector body 10.

[0155] Furthermore, in one embodiment, the unlocking ring 12 includes:

[0156] An annular body 121, which is used to cooperate with the outer sleeve protrusion 131, so that the unlocking ring 12 moves with the connector outer sleeve 13 and compresses the elastic member 11;

[0157] Two oppositely arranged extension portions 122 are both arranged on the annular body 121 and extend toward one side of the axial direction of the annular body 121 and are used to cover the buckle 201 when snapped into place.

[0158] Two recesses are provided on the circumference of the annular body 121, the positions of which correspond to the positions of the two extensions 122, and the height of the recesses is greater than or equal to the height of the first protrusion 102, so as to facilitate the assembly of the unlocking ring from the front of the plug to the back of the connector.

[0159] Each of the two ends of the recess is provided with a step, which is used to match with the two side planes between the first protrusion 102 and the second protrusion 103 on the connector body 10. The unlocking ring is oriented to prevent the unlocking ring from rotating on the plug and deviating from the preset direction.

[0160] The above docking process is further explained below:

[0161] First, before insertion, the unlocking ring 12 in the connector is located at the initial position, and the buckle 201 is in the initial state.

[0162] Then, the connector is gradually inserted into the adapter until the inclined surface of the buckle 201 contacts the inclined surface of the first protrusion 102. At this time, there is a gap between the first protrusion 102 and the connector housing 13.

[0163] As the insertion continues, the cantilever of the buckle 201 is deformed by the first protrusion 102, and after the cantilever is deformed, the buckle 201 is located in the gap between the first protrusion 102 and the connector housing 13. Due to the deformation, the end face of the buckle 201 contacts and abuts against the end face of the unlocking ring 12, that is, corresponding to the first state, the unlocking ring 12 is located at the first docking position.

[0164] The insertion continues, and the unlocking ring 12 is held by the buckle 201 and moves backwards, and the buckle 201 gradually passes over the first protrusion 102 and gradually returns to the initial state.

[0165] The insertion continues, the buckle 201 passes over the first protrusion 102, and the unlocking ring 12 moves to the maximum position during docking (i.e., the second docking position, corresponding to the second state mentioned above). The buckle returns to the initial state, and the unlocking ring 12 loses the abutting effect of the end surface of the buckle 201.

[0166] Finally, the unlocking ring 12 moves forward under the action of the spring force, returns to the first docking position, fills the gap between the buckle 201 and the connector housing 13, and covers the buckle 201 to prevent the buckle 201 from deforming and falling out.

[0167] The above locking process is further described below:

[0168] Before unlocking, the unlocking ring 12 and the connector jacket 13 are located at the initial position. At this time, the part of the unlocking ring 12 head (i.e., the extension part 122) is located in the gap between the buckle 201 and the connector jacket 13, and the unlocking ring 12 covers the area where the buckle 201 is located.

[0169] Pull the connector cover 13 backward, the connector cover 13 moves backward, and drives the unlocking ring 12 to move backward, and the unlocking ring 12 compresses the elastic member 11. Until the unlocking ring 12 is separated from the clamping part and is located in the first unlocking position, which corresponds to the fourth state. At this time, the buckle 201 loses the restriction effect of the unlocking ring 12.

[0170] The connector housing 13 is continuously pulled backward, and the elastic member 11 is continuously compressed until the elastic force is greater than the force of deformation of the buckle 201, at which time the buckle 201 begins to deform and gradually passes over the first protrusion 102. The connector housing is continuously pulled backward until the buckle 201 passes over the first protrusion 102, corresponding to the fifth state, and the unlocking ring 12 is located at the second unlocking position.

[0171] Continue to pull the connector housing backwards, the buckle 201 completely passes over the first protrusion 102 and returns to the initial position. At this time, the housing and the unlocking ring 12 return to the initial position under the action of the spring. Continue to pull the connector housing backwards until the connector and the adapter are completely separated.

[0172] At the same time, the present invention also provides another optical fiber connection assembly, comprising:

[0173] An adapter 2, comprising,

[0174] The adapter body 20 is provided with a buckle 201;

[0175] A connector 1 comprising:

[0176] The connector body 10 comprises an inserting portion 101, on which a first protrusion 102 for engaging with the buckle 201 is provided;

[0177] An elastic member 11, which is sleeved on the inserting portion 101;

[0178] An unlocking ring 12, which is sleeved on the inserting portion 101, with a radial gap between the unlocking ring 12 and the inserting portion 101, and is used to cover the clamping portion;

[0179] A connector sleeve 13, which is sleeved on the inserting portion 101 and is used to drive the unlocking ring 12 to compress the elastic member 11 so that the unlocking ring 12 is separated from the clamping portion;

[0180] And the spatial distance relationship between the first protrusion 102, the unlocking ring 12 and the connector housing 13 satisfies:

[0181] When the connector and the adapter are locked, the buckle 201 can be deformed and abut against the unlocking ring 12; after the connector and the adapter are locked, the buckle 201 can extend into the radial gap.

[0182] Further, in one embodiment, after the buckle 201 is buckled with the first protrusion 102, the contact surface where the insertion portion 101 and the buckle 201 are in contact is used as the reference line;

[0183] Define the thickness of the buckle 201 as L1, the distance from the first protrusion 102 to the inner surface of the connector housing 13 as L4, and the distance from the lower surface of the extension portion of the unlocking ring 12 to the reference line as L6;

[0184] L4≥L1 is set so that when the connector and the adapter are locked, the buckle 201 can be deformed and abut against the unlocking ring 12;

[0185] It is set that L6≥L1, so that after the connector and the adapter are locked, the buckle 201 can extend into the radial gap.

[0186] Furthermore, in one embodiment, the distance from the cantilever of the buckle 201 to the reference line is defined as L2, and the height of the first protrusion 102 relative to the reference line is defined as L3, such that L3 ≥ L2.

[0187] Furthermore, in one embodiment, the distance from the inner surface of the connector housing 13 to the reference line is defined as L5, and the distance from the upper surface of the unlocking ring 12 to the reference line is defined as L7, such that L5≥L7.

[0188] Furthermore, in one embodiment, a jacket protrusion 131 is provided on the connector jacket 13 , and a second protrusion 103 matching with the jacket protrusion 131 for limiting position is provided on the insertion portion 101 .

[0189] Furthermore, in one embodiment, the unlocking ring 12 includes:

[0190] An annular body 121, which is used to cooperate with the outer sleeve protrusion 131, so that the unlocking ring 12 moves with the connector outer sleeve 13 and compresses the elastic member 11;

[0191] Two oppositely arranged extension portions 122 are both arranged on the annular body 121 and extend toward one side of the axial direction of the annular body 121 and are used to cover the buckle 201 when snapped into place.

[0192] Furthermore, in one embodiment, two recesses are provided on the circumference of the annular body 121 , the positions of which correspond to the positions of the two extension portions 122 , respectively, and the height of the recesses is greater than or equal to the height of the first protrusion 102 .

[0193] Furthermore, in one embodiment, a step is respectively provided at both ends of each of the recesses, and the step is used to cooperate with two side planes on the connector body 10 located between the first protrusion 102 and the second protrusion 103 .

[0194] Furthermore, in one embodiment, the outer sleeve protrusion 131 includes:

[0195] Two extension walls are disposed on the inner wall of the connector housing 13 and extend in the axial direction of the connector housing 13 , and the two extension walls are spaced apart to form a passage for the extension portion 122 to pass through.

[0196] 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 principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention. 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. A connector, characterized in that: include: A connector body (10) comprising an insertion portion (101), wherein the insertion portion (101) is provided with a first protrusion (102) for engaging with a buckle (201) of an adapter; An elastic member (11) sleeved on the inserting portion (101); An unlocking ring (12) is sleeved on the insertion portion (101), a radial gap is provided between the unlocking ring (12) and the insertion portion (101), and is used to cover the clamping portion; A connector jacket (13) is sleeved on the insertion portion (101) and is used to drive the unlocking ring (12) to compress the elastic member (11) so that the unlocking ring (12) is separated from the clamping portion; The spatial distance relationship between the first protrusion (102), the unlocking ring (12) and the connector housing (13) satisfies: When the connector and the adapter are locked, the buckle (201) can be deformed and abut against the unlocking ring (12); after the connector and the adapter are locked, the buckle (201) can extend into the radial gap.

2. The connector according to claim 1, wherein: Also includes: A contact surface where the insertion portion (101) and the buckle (201) are in contact after the buckle (201) is buckled with the first protrusion (102) is used as a reference line; The thickness of the buckle (201) is defined as L1, the distance from the first protrusion (102) to the inner surface of the connector housing (13) is defined as L4, and the distance from the lower surface of the extension portion of the unlocking ring (12) to the reference line is defined as L6; Setting L4≥L1, so that when the connector and the adapter are locked, the buckle (201) can be deformed and abut against the unlocking ring (12); L6≥L1 is set so that after the connector and the adapter are locked, the buckle (201) can extend into the radial gap.

3. The connector according to claim 2, characterized in that Also includes: The distance from the cantilever of the buckle (201) to the reference line is defined as L2, and the height of the first protrusion (102) relative to the reference line is defined as L3, such that L3≥L2.

4. The connector according to claim 2, characterized in that: Also includes: The distance from the inner surface of the connector housing (13) to the reference line is defined as L5, and the distance from the upper surface of the unlocking ring (12) to the reference line is defined as L7, so that L5≥L7.

5. The connector according to claim 1, wherein: The connector outer sleeve (13) is provided with an outer sleeve protrusion (131), and the insertion portion (101) is provided with a second protrusion (103) for limiting position and matching with the outer sleeve protrusion (131).

6. The connector according to claim 5, characterized in that The unlocking ring (12) comprises: an annular body (121) for cooperating with the outer sleeve protrusion (131) so that the unlocking ring (12) moves with the connector outer sleeve (13) and compresses the elastic member (11); Two oppositely arranged extension portions (122) are both arranged on the annular body (121) and extend toward one side of the axial direction of the annular body (121) and are used to cover the buckle (201) when snapped into place.

7. The connector according to claim 6, wherein: Two recessed portions are provided on the circumference of the annular body (121), the positions of which correspond to the positions of the two extension portions (122) respectively, and the height of the recessed portions is greater than or equal to the height of the first protrusion (102).

8. The connector according to claim 7, wherein: A step is provided at each of the two ends of each recess, and the step is used to match with two side planes located between the first protrusion (102) and the second protrusion (103) on the connector body (10).

9. The connector according to claim 5, characterized in that: The outer sleeve protrusion (131) comprises: Two extension walls are arranged on the inner wall of the connector housing (13) and extend in the axial direction of the connector housing (13), and the two extension walls are arranged at intervals to form a channel for the extension portion (122) to pass through.

10. The connector according to claim 9, wherein: The extension wall is also provided with a groove which cooperates with the second protrusion (103) for positioning.

11. An optical fiber connection assembly, characterized in that: include: An adapter (2) comprising: An adapter body (20) having a buckle (201) disposed thereon; A connector (1) comprising: A connector body (10), comprising an insertion portion (101), wherein the insertion portion (101) is provided with a first protrusion (102) for engaging with the buckle (201); An elastic member (11) sleeved on the inserting portion (101); An unlocking ring (12) is sleeved on the insertion portion (101), a radial gap is provided between the unlocking ring (12) and the insertion portion (101), and is used to cover the clamping portion; A connector jacket (13) is sleeved on the insertion portion (101) and is used to drive the unlocking ring (12) to compress the elastic member (11) so that the unlocking ring (12) is separated from the clamping portion; The spatial distance relationship between the first protrusion (102), the unlocking ring (12) and the connector housing (13) satisfies: When the connector and the adapter are locked, the buckle (201) can be deformed and abut against the unlocking ring (12); after the connector and the adapter are locked, the buckle (201) can extend into the radial gap.

12. The optical fiber connection assembly according to claim 11, wherein: Also includes: A contact surface where the insertion portion (101) and the buckle (201) are in contact after the buckle (201) is buckled with the first protrusion (102) is used as a reference line; The thickness of the buckle (201) is defined as L1, the distance from the first protrusion (102) to the inner surface of the connector housing (13) is defined as L4, and the distance from the lower surface of the extension portion of the unlocking ring (12) to the reference line is defined as L6; Setting L4≥L1, so that when the connector and the adapter are locked, the buckle (201) can be deformed and abut against the unlocking ring (12); L6≥L1 is set so that after the connector and the adapter are locked, the buckle (201) can extend into the radial gap.

13. The optical fiber connection assembly according to claim 12, wherein: Also includes: The distance from the cantilever of the buckle (201) to the reference line is defined as L2, and the height of the first protrusion (102) relative to the reference line is defined as L3, such that L3≥L2.

14. The optical fiber connection assembly according to claim 12, wherein: Also includes: The distance from the inner surface of the connector housing (13) to the reference line is defined as L5, and the distance from the upper surface of the unlocking ring (12) to the reference line is defined as L7, so that L5≥L7.

15. A connector, characterized in that: include: A connector body (10) comprising an insertion portion (101), wherein the insertion portion (101) is provided with a first protrusion (102) for engaging with a matching adapter; An elastic member (11) sleeved on the inserting portion (101); an unlocking ring (12), which is sleeved on the insertion portion (101) and can move along the axial direction of the insertion portion (101); the unlocking ring (12) is used to compress the elastic member (11) when it is engaged with the adapter, and the elastic member (11) provides a driving force to drive the unlocking ring (12) to press the engagement portion; A connector sleeve (13) is sleeved on the insertion portion (101), the connector sleeve (13) can move along the axial direction of the insertion portion (101), and can drive the unlocking ring (12) to compress the elastic member (11), so that the unlocking ring (12) is separated from the clamping portion; A pull rope (14) is sleeved on the connector housing (13).

16. The connector according to claim 15, wherein: The connector outer sleeve (13) is provided with an outer sleeve protrusion (131), and the insertion portion (101) is provided with a second protrusion (103) for limiting position and matching with the outer sleeve protrusion (131).

17. The connector according to claim 16, wherein: The unlocking ring (12) comprises: an annular body (121) for cooperating with the outer sleeve protrusion (131) so that the unlocking ring (12) moves with the connector outer sleeve (13) and compresses the elastic member (11); An extension portion (122) is arranged on the annular body (121) and extends toward one side of the axial direction of the annular body (121). The extension portion (122) is used to cooperate with the adapter so that the unlocking ring (12) moves with the adapter and is used to press the locking portion when it is locked in place.

18. The connector according to claim 17, wherein: The outer sleeve protrusion (131) comprises: Two extension walls are arranged on the inner wall of the connector housing (13) and extend in the axial direction of the connector housing (13), and the two extension walls are arranged at intervals to form a channel for the extension portion (122) to pass through.

19. The connector according to claim 17, wherein: The inserting portion (101) is also provided with a third protrusion (104); one end of the elastic member (11) is abutted against the annular body (121), and the other end is abutted against the third protrusion (104).

20. The connector according to claim 15, wherein: The connector further comprises: A connector cap (15) is provided with a connector cap connecting rope (151), one end of the connector cap connecting rope (151) is connected to the connector body (10), and a first sealing ring (153) is also provided in the connector cap (15) for sealing with the connector sleeve (13).

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