Single-core UPC direction-free direct plugging optical fiber connector

Abstract

The invention discloses a single-core UPC direction-free direct plugging optical fiber connector, which comprises a single-core UPC optical fiber plug and a single-core UPC optical fiber adapter, and is characterized in that the single-core UPC optical fiber plug and the single-core UPC optical fiber adapter are matched with each other and are used for single-core UPC direction-free direct plugging optical fiber connection; according to the invention, the single-core UPC optical fiber plug and the single-core UPC optical fiber adapter are matched with each other, and an original square interface is changed into a circular interface, so that the optical fiber connection of the single-core UPC without direction direct plugging is realized, the blind plugging connection effect of the single-core UPC can be realized without direction adjustment, the connection efficiency of the single-core UPC is improved, the working efficiency of operation and maintenance is improved, and the production cost of the single-core UPC is reduced. And work errors are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber connectors, in particular to a single-core UPC non-directional direct plug-in optical fiber connector. Background Art

[0002] Fiber optic connectors are devices that are removable (movable) connections between optical fibers. They precisely connect the two end faces of the optical fiber so that the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent, and the impact on the system caused by its involvement in the optical link is minimized. This is the basic requirement of fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and various performances of the optical transmission system. Existing fiber optic connectors are usually standard SC plug-in structures, FC spiral structures, and spiral buckle structures. When adapting, the existing plug structure needs to make the slot and the plug block consistent in direction before docking. The connection efficiency is low and it is easy to connect incorrectly. It also needs to be adjusted many times during the connection, which is relatively cumbersome. In addition, it is very easy to contaminate the cross section of the optical fiber during the plug-in process, thereby affecting the communication quality of the optical fiber link. The main reason for this kind of directional docking is that the optical fiber has an APC end face, and the direction needs to be distinguished during docking. The main reason for the existence of APC is that the return loss is large when the UPC processing level is not high before, which affects the communication of television services. With the development of technology, the return loss of UPC can already meet most of the existing business applications, and major operators and radio and television are gradually removing APC. Therefore, there is an urgent need for a single-core UPC non-directional plug-in fiber optic connector to improve the efficiency of operation and maintenance and avoid work errors. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] The technical problem to be solved by the present invention is that the existing optical fiber connectors need to be plugged in different directions when docking, which has low connection efficiency, is easy to connect incorrectly, and requires multiple adjustments during connection, which is relatively cumbersome.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a single-core UPC direct plug-in optical fiber connector without direction distinction, comprising a single-core UPC optical fiber plug and a single-core UPC optical fiber adapter, wherein the single-core UPC optical fiber plug and the single-core UPC optical fiber adapter cooperate with each other and are used for single-core UPC direct plug-in optical fiber connection without direction distinction;

[0006] The single-core UPC optical fiber plug includes an inner sleeve, a retaining spring, an outer sleeve, a core, a spring, a spring seat, an aramid pressure ring, an outer skin pressure ring, a tail sleeve and a landing base. The retaining spring is arranged on the inner sleeve for clamping the single-core UPC optical fiber adapter. The outer sleeve is sleeved on the inner sleeve. The core is arranged in the inner sleeve. The spring is arranged at the head of the spring seat. The tail of the core is connected to the head of the spring seat. The aramid pressure ring is arranged at the tail of the spring seat for crimping the aramid of the optical fiber. The outer skin pressure ring is arranged at the tail of the aramid pressure ring for crimping the outer skin of the optical fiber. The tail sleeve is sleeved on the tail of the spring seat, and the landing base is arranged on the outer sleeve.

[0007] The single-core UPC optical fiber adapter includes an adapter seat, a sleeve, a pressure cap and a socket. The sleeve is arranged in the inner hole of the adapter seat through the pressure cap. The socket is arranged on the adapter seat. The socket has a cylindrical cavity structure. A U-shaped groove is arranged on the outside of the socket. The U-shaped groove cooperates with the retaining spring. A guide angle is arranged on the outer edge of the socket.

[0008] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector described in the present invention, wherein: the inner sleeve is a cylindrical cavity structure, the interior of the inner sleeve is provided with a first chamber and a second chamber, the first chamber and the second chamber are connected, the second chamber is provided with a first internal thread matching with the spring seat, the head of the inner sleeve is symmetrically provided with notches, the notches are connected with the first chamber, the notches are matched with the retaining spring, the outer cylindrical surface of the inner sleeve is provided with a first step and a second step, and the first step is symmetrically provided with convex surfaces matching with the outer sleeve.

[0009] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector of the present invention, the retaining spring is in a U-shaped structure, and two sides of the opening of the retaining spring are provided with eight-shaped openings.

[0010] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector described in the present invention, the outer sleeve is in a cylindrical cavity structure, and a third chamber and a fourth chamber are arranged inside the outer sleeve, a closed stop block is arranged on the outer edge of the third chamber, and platforms are symmetrically arranged in the third chamber, and the platforms cooperate with the convex surface. A semicircular boss is arranged on the top side of the third chamber, and a horizontal boss is arranged on the bottom side of the third chamber, and a first external thread that cooperates with the landing base is arranged on the outer cylindrical surface of the rear of the outer sleeve.

[0011] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector described in the present invention, the spring seat is in a cylindrical cavity structure, a fifth chamber and a sixth chamber are arranged inside the spring seat, a second external thread matching the first internal thread is arranged on the outer cylindrical surface of the head of the spring seat, a clamping groove matching the tail sleeve is arranged on the outer cylindrical surface of the spring seat, and an aramid crimping portion matching the aramid pressure ring is arranged at the tail of the spring seat.

[0012] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector described in the present invention, the landing base is in a cylindrical cavity structure, a seventh chamber and an eighth chamber are arranged in the landing base, a second internal thread matching the first external thread is arranged in the seventh chamber, and protrusions are evenly arranged on the middle outer cylindrical surface of the landing base.

[0013] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector described in the present invention, a mounting boss is arranged in the middle of the adapter seat, mounting holes are symmetrically arranged on the mounting boss, and a standard FC thread structure is arranged at the tail of the adapter seat.

[0014] As a preferred solution of the single-core UPC non-directional straight plug-in optical fiber connector of the present invention, the outer surface of the aramid crimping part is provided with knurling.

[0015] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector described in the present invention, a limiting boss is provided in the middle of the spring seat, a sealing groove is provided on one side of the limiting boss, and a sealing ring is provided in the sealing groove.

[0016] As a preferred solution of the single-core UPC non-directional plug-in optical fiber connector of the present invention, the outer edge of the first cavity of the inner sleeve is provided with a chamfer.

[0017] The beneficial effects of the present invention are:

[0018] 1. Through the cooperation between the single-core UPC fiber optic plug and the single-core UPC fiber optic adapter, and changing the original square interface to a circular interface, the single-core UPC can achieve direct plug-in and pull-out fiber optic connection regardless of direction. Without direction adjustment, the blind plug connection effect of the single-core UPC can be achieved, which improves the efficiency of the single-core UPC connection, thereby improving the efficiency of operation and maintenance and avoiding work errors;

[0019] 2. This optical fiber connector can achieve the purpose of quick plugging and unplugging regardless of direction, and has the advantages of rapid deployment, stable and reliable, beautiful deployment, simple operation and low price. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a schematic diagram of the structure after the single-core UPC optical fiber plug and the single-core UPC optical fiber adapter are separated.

[0022] Figure 2 This is an exploded diagram of a single-core UPC fiber optic plug.

[0023] Figure 3 An exploded diagram of a single-core UPC fiber optic adapter.

[0024] Figure 4 This is a schematic diagram of the internal structure of a single-core UPC fiber optic adapter.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the inner sleeve.

[0026] Figure 6 Schematic diagram of the internal structure of the inner sleeve.

[0027] Figure 7 It is a schematic diagram of the structure of the retaining spring.

[0028] Figure 8 A schematic diagram of the structure of the jacket.

[0029] Fig. 9 It is a structural schematic diagram of the spring seat.

[0030] Fig.10 It is a schematic diagram of the structure of the landing base.

[0031] Fig.11 It is a structural schematic diagram of a single-core UPC optical fiber plug and a single-core UPC optical fiber adapter after being plugged in.

[0032] In the figure: 1, single-core UPC optical fiber plug; 11, inner sleeve; 111, first chamber; 112, second chamber; 113, first internal thread; 114, notch; 115, first step; 116, second step; 117, convex surface; 118, chamfer; 12, retaining spring; 121, eight-shaped mouth; 13, outer sleeve; 131, third chamber; 132, fourth chamber; 133, closed stopper; 134, platform; 135, semicircular boss; 136, horizontal boss; 137, first external thread; 14, ferrule; 15, spring; 16, spring seat; 161, fifth chamber; 162, fourth chamber Six chambers; 163, second external thread; 164, snap-in groove; 165, aramid crimping part; 166, limiting boss; 167, sealing groove; 168, sealing ring; 17, aramid pressure ring; 18, outer skin pressure ring; 19, tail sleeve; 110, landing base; 1101, seventh chamber; 1102, eighth chamber; 1103, second internal thread; 2, single-core UPC fiber optic adapter; 21, adapter seat; 22, sleeve; 23, pressure cap; 24, socket; 25, U-shaped groove; 26, guide angle; 27, mounting boss; 28, mounting hole; 29, standard FC thread structure; 3, optical cable. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example

[0037] Reference Figures 1 to 11 , this embodiment provides a single-core UPC non-directional direct plug-in optical fiber connector, which includes a single-core UPC optical fiber plug 1 and a single-core UPC optical fiber adapter 2, the single-core UPC optical fiber plug 1 and the single-core UPC optical fiber adapter 2 cooperate with each other for single-core UPC non-directional direct plug-in optical fiber connection;

[0038] Specifically, the single-core UPC optical fiber plug 1 includes an inner sleeve 11, a retaining spring 12, an outer sleeve 13, a core 14, a spring 15, a spring seat 16, an aramid pressure ring 17, an outer skin pressure ring 18, a tail sleeve 19 and a landing base 110. The retaining spring 12 is arranged on the inner sleeve 11 for clamping the single-core UPC optical fiber adapter 2. The outer sleeve 13 is sleeved on the inner sleeve 11. The core 14 is arranged in the inner sleeve 11. The spring 15 is arranged at the head of the spring seat 16. The tail of the core 14 is connected to the head of the spring seat 16. The aramid pressure ring 17 is arranged at the tail of the spring seat 16 for crimping the aramid of the optical fiber. The outer skin pressure ring 18 is arranged at the tail of the aramid pressure ring 17 for crimping the outer skin of the optical fiber. The tail sleeve 19 is sleeved on the tail of the spring seat 16, and the landing base 110 is arranged on the outer sleeve 13;

[0039] Specifically, the single-core UPC optical fiber adapter 2 includes an adapter seat 21, a sleeve 22, a pressure cap 23 and a socket 24. The sleeve 22 is arranged in the inner hole of the adapter seat 21 through the pressure cap 23. The socket 24 is arranged on the adapter seat 21. The socket 24 has a cylindrical cavity structure. A U-shaped groove 25 is arranged on the outer side of the socket 24. The U-shaped groove 25 cooperates with the retaining spring 12. A guide angle 26 is arranged on the outer edge of the socket 24. Furthermore, a mounting boss 27 is arranged in the middle of the adapter seat 21, and mounting holes 28 are symmetrically arranged on the mounting boss 27. A standard FC thread structure 29 is arranged at the tail of the adapter seat 21.

[0040] The single-core UPC non-directional plug-in optical fiber connector is mainly composed of a single-core UPC optical fiber plug 1 and a single-core UPC optical fiber adapter 2. Specifically, the single-core UPC optical fiber plug 1 is mainly composed of an inner sleeve 11, a retaining spring 12, an outer sleeve 13, a ferrule 14, a spring 15, a spring seat 16, an aramid pressure ring 17, an outer skin pressure ring 18, a tail sleeve 19 and a landing base 110. A retaining spring 12 is installed at the head of the inner sleeve 11, and the single-core UPC optical fiber adapter 2 can be clamped by the retaining spring 12. The outer sleeve 13 of the inner sleeve 11 is equipped with an outer sleeve 13, and the inner sleeve 11 is equipped with a ferrule 14. The spring 15 is installed at the head of the spring seat 16, and the spring seat 16 is sleeved on the tail of the inner sleeve 11, so that the spring 15 is inserted into the tail of the ferrule 14 to ensure that the ferrule 14 has a certain pre-tightening force. , an aramid pressure ring 17 is installed at the tail of the spring seat 16, and the aramid pressure ring 17 is a cylindrical cavity structure as a whole. The inner cavity on the left side of the aramid pressure ring 17 can cooperate with the spring seat 16 to facilitate the crimping of the aramid of the optical cable 3; an outer skin pressure ring 18 is set on the cylinder on the right side of the aramid pressure ring 17, and the outer skin pressure ring 18 cooperates with the aramid pressure ring 17 to facilitate the crimping of the optical fiber outer skin of the optical cable 3, and a tail sleeve 19 is set at the tail of the spring seat 16, so that the spring seat 16, the aramid pressure ring 17 and the outer skin pressure ring 18 can be closely matched, and a landing base 110 is installed at the tail of the outer sleeve 13, so that the inner sleeve 11, the retaining ring 12, the outer sleeve 13, the ferrule 14, the spring 15, the spring seat 16, the aramid pressure ring 17, the outer skin pressure ring 18, the tail sleeve 19 and the landing base 110 form a whole;

[0041] like Figure 4As shown, the single-core UPC optical fiber adapter 2 is mainly composed of an adapter seat 21, a sleeve 22, a pressure cap 23 and a socket 24. A socket 24 matching the single-core UPC optical fiber plug 1 is installed on the left side of the adapter seat 21. The socket 24 is a cylindrical cavity structure as a whole. The inner cavity of the socket 24 is connected with the inner hole of the adapter seat 21, so that the sleeve 22 can be inserted into the socket 24. A U-shaped groove 25 is opened on the outer cylindrical surface of the socket 24, and the left side of the U-shaped groove 25 is ninety degrees with the bottom, so as to hang the clip 12. The right side of the U-shaped groove 25 is a large-angle slope structure, so that the clip 12 can slide back into the U-shaped groove 25 after exceeding the U-shaped groove 25 when docking. A guide angle 26 is provided at the edge of the outer cylindrical surface of the socket 24, that is, close to the left side of the U-shaped groove 25. The socket 24 can open the retaining spring 12 through the guide angle 26 during plugging, so that the retaining spring 12 can be smoothly inserted into the U-shaped groove 25. In this embodiment, the original square interface of the optical fiber connector is changed to a circular interface to facilitate the realization of optical fiber connection of a single-core UPC regardless of direction. The blind plug connection effect of the single-core UPC can be achieved without direction adjustment, which improves the efficiency of the single-core UPC connection, thereby improving the work efficiency of operation and maintenance and avoiding work errors. Furthermore, in this embodiment, a mounting boss 27 is provided at the middle position outside the adapter seat 21, and mounting holes 28 are symmetrically opened at the upper and lower ends of the mounting boss 27, so that the adapter seat 21 can be installed on a tray or a flip panel, and a standard FC thread structure 29 is provided at the tail of the adapter seat 21 to facilitate the connection of the adapter.

[0042] Specifically, the inner sleeve 11 has a cylindrical cavity structure, and a first chamber 111 and a second chamber 112 are provided inside the inner sleeve 11. The first chamber 111 and the second chamber 112 are connected, and a first internal thread 113 matching the spring seat 16 is provided in the second chamber 112. The head of the inner sleeve 11 is symmetrically provided with notches 114, and the notches 114 are connected to the first chamber 111, and the notches 114 match the retaining ring 12. Furthermore, the outer edge of the first chamber 111 of the inner sleeve 11 is provided with a chamfer 118, and a first step 115 and a second step 116 are provided on the outer cylindrical surface of the inner sleeve 11, and a convex surface 117 matching the outer sleeve 13 is symmetrically provided on the first step 115.

[0043] like Figure 5 and Figure 6As shown, the inner sleeve 11 in this embodiment is a cylindrical cavity structure as a whole. A first cavity 111 and a second cavity 112 are respectively arranged inside the inner sleeve 11 from left to right, and the first cavity 111 and the second cavity 112 are connected, so that the ferrule 14 can pass through the inner sleeve 11, so as to facilitate the installation of the ferrule 14. A first internal thread 113 matching with the spring seat 16 is arranged in the second cavity 112. The inner sleeve 11 is connected to the spring seat 16 through a thread. Two notches 114 are symmetrically provided on the outer cylindrical surface of the head of the inner sleeve 11. The two notches 114 are both connected with the first cavity 111, so as to facilitate the installation of the retaining ring 12 to the inner sleeve 11. At the slot 114, further, the present embodiment also provides a chamfer 118 at the outer edge of the first chamber 111 so that the end of the single-core UPC optical fiber adapter 2 can be smoothly connected, and a first step 115 is provided in the middle of the outer cylindrical surface of the inner sleeve 11, and two convex surfaces 117 are symmetrically provided on the first step 115. When the inner sleeve 11 is installed, the two convex surfaces 117 can cooperate with the outer sleeve 13 to ensure that the inner and outer sleeves 13 can move forward and backward, but cannot rotate. A second step 116 is also provided at the tail end of the outer cylindrical surface of the inner sleeve 11 to limit the forward and backward movement of the inner sleeve 11 and the outer sleeve 13.

[0044] Specifically, the clamping spring 12 is in a U-shaped structure, and two sides of the opening of the clamping spring 12 are provided with splayed openings 121 .

[0045] like Figure 7 As shown, the retaining spring 12 in this embodiment is generally U-shaped, so that the retaining spring 12 can be better installed in the slot 114, and eight-shaped openings 121 are also provided on both sides of the opening of the retaining spring 12, so as to facilitate the expansion of the retaining spring 12 and realize the separation of the single-core UPC fiber optic plug 1 and the single-core UPC fiber optic adapter 2. It should be noted that the retaining spring 12 needs to have a certain elasticity. The retaining spring 12 in this embodiment is made of metal material. In other embodiments, the retaining spring 12 can also be made of elastic non-metallic material.

[0046] Specifically, the outer sleeve 13 has a cylindrical cavity structure, and a third chamber 131 and a fourth chamber 132 are arranged inside the outer sleeve 13. A closed stopper 133 is arranged on the outer edge of the third chamber 131, and a platform 134 is symmetrically arranged inside the third chamber 131, and the platform 134 cooperates with the convex surface 117. A semicircular boss 135 is arranged on the top side of the third chamber 131, and a horizontal boss 136 is arranged on the bottom side of the third chamber 131. A first external thread 137 that cooperates with the landing base 110 is arranged on the outer cylindrical surface of the tail of the outer sleeve 13.

[0047] like Figure 8As shown, the outer sleeve 13 in this embodiment is a cylindrical cavity structure as a whole, and a third chamber 131 and a fourth chamber 132 are respectively arranged inside the outer sleeve 13 from left to right, and a closed stopper 133 is arranged on the outer edge of the third chamber 131 to limit the inner sleeve 11, and two platforms 134 are symmetrically arranged in the third chamber 131, and the two platforms 134 are respectively matched with the two convex surfaces 117 on the inner sleeve 11 to ensure that the inner sleeve 11 and the outer sleeve 13 will not rotate relative to each other after the inner sleeve 11 and the outer sleeve 13 are assembled, and a semicircular boss 135 is arranged on the top side of the third chamber 131. When the outer sleeve 13 is pulled back, the eight-shaped opening 121 on the retaining spring 12 can be opened by the semicircular boss 135, so as to realize the single-core UPC optical fiber plug 1 and the single In order to quickly separate the single-core UPC fiber optic adapter 2, a horizontal boss 136 is arranged on the bottom side of the third chamber 131. When the semicircular boss 135 stretches the retaining spring 12, the horizontal boss 136 can limit the backward movement of the retaining spring 12, so that the semicircular boss 135 can quickly stretch the retaining spring 12. A first external thread 137 is arranged on the outer cylindrical surface of the tail of the outer sleeve 13. The outer sleeve 13 is threadedly connected to the landing base 110 through the first external thread 137. A guide groove is also arranged on the left side of the outer cylindrical surface of the outer sleeve 13, which can play a certain guiding role when the single-core UPC fiber optic plug 1 and the single-core UPC fiber optic adapter 2 are plugged in and out, so as to realize the quick connection and separation of the single-core UPC fiber optic plug 1 and the single-core UPC fiber optic adapter 2.

[0048] Specifically, the spring seat 16 has a cylindrical cavity structure, and a fifth chamber 161 and a sixth chamber 162 are provided inside the spring seat 16. A second external thread 163 that cooperates with the first internal thread 113 is provided on the outer cylindrical surface of the head of the spring seat 16. Furthermore, a limiting boss 166 is provided in the middle of the spring seat 16, and a sealing groove 167 is provided on one side of the limiting boss 166. A sealing ring 168 is provided in the sealing groove 167. A clamping groove 164 that cooperates with the tail sleeve 19 is provided on the outer cylindrical surface of the spring seat 16. An aramid crimping portion 165 that cooperates with the aramid pressure ring 17 is provided at the tail of the spring seat 16. Furthermore, the outer surface of the aramid crimping portion 165 is provided with knurling.

[0049] like Fig. 9As shown, the spring seat 16 in this embodiment is an overall cylindrical cavity structure, and a fifth chamber 161 and a sixth chamber 162 are respectively provided inside the spring seat 16 from left to right. The fifth chamber 161 is used as a spring cavity for installing the spring 15, so that the ferrule 14 has a certain pre-tightening force, and the sixth chamber 162 is used as an optical fiber accommodating cavity so that the bare fiber can be inserted into the ferrule 14. A second external thread 163 is provided on the outer cylindrical surface of the head of the spring seat 16, and the second external thread 163 cooperates with the first internal thread 113 on the inner sleeve 11 to realize the threaded connection between the inner sleeve 11 and the spring seat 16. Further, in this embodiment, a limiting boss 166 is provided on the outer cylindrical surface of the spring seat 16, and a sealing groove 167 is provided on the right side of the limiting boss 166, and a sealing ring 16 is installed in the sealing groove 167. 8. When the landing base 110 is mounted on the spring seat 16, the clearance between the landing base 110 and the spring seat 16 is matched, and the limiting boss 166 can limit the landing base 110. The sealing ring 168 in the sealing groove 167 plays a certain waterproof role. A clamping groove 164 is also provided on the outer cylindrical surface of the spring seat 16 on the right side of the sealing groove 167. The spring seat 16 cooperates with the tail sleeve 19 through the clamping groove 164 to facilitate the installation of the tail sleeve 19 on the spring seat 16. An aramid crimping portion 165 is provided on the outer cylindrical portion of the spring seat 16. The aramid crimping portion 165 cooperates with the aramid pressure ring 17 to achieve crimping of the optical fiber aramid. Furthermore, this embodiment is also provided with knurling on the aramid crimping portion 165, so that the aramid pressure ring 17 can better fix the optical fiber aramid.

[0050] Specifically, the landing base 110 has a cylindrical cavity structure, and a seventh chamber 1101 and an eighth chamber 1102 are provided in the landing base 110. The seventh chamber 1101 is provided with a second internal thread 1103 that matches the first external thread 137. The middle outer cylindrical surface of the landing base 110 is evenly provided with protrusions.

[0051] like Fig.10 As shown, the landing base 110 in this embodiment is an overall cylindrical cavity structure, and a seventh chamber 1101 and an eighth chamber 1102 are arranged inside the landing base 110, and a second internal thread 1103 is arranged in the seventh chamber 1101, and the second internal thread 1103 cooperates with the first external thread 137 on the outer sleeve 13 to make the landing base 110 and the outer sleeve 13 threadedly connected, and bumps are evenly arranged on the outer cylindrical surface of the middle section of the landing base 110 to facilitate the staff to hold it, and a ninth chamber (not shown in the figure) is also arranged at the tail of the landing base 110 to facilitate the cooperation between the landing base 110 and the tail sleeve 19.

[0052] The connection method of the single-core UPC non-directional plug-in optical fiber connector is as follows: during plugging, in the initial state, due to the elastic force of the retaining spring 12, the outer sleeve 13 is always kept in the front position. During the process of inserting the single-core UPC optical fiber plug 1 into the single-core UPC optical fiber adapter 2, the retaining spring 12 is first stretched open under the action of the guide angle 26 of the single-core UPC optical fiber adapter 2 until the retaining spring 12 falls into the U-shaped groove 25 on the single-core UPC optical fiber adapter 2, so as to realize the plugging between the single-core UPC optical fiber plug 1 and the single-core UPC optical fiber adapter 2. When the single-core UPC optical fiber plug 1 needs to be pulled out, it is only necessary to hold the landing base 110 and pull it backwards. Since the landing base 110 and the outer sleeve 13 are connected as a whole through threads, the landing base 1 10 will synchronously drive the outer sleeve 13 to move backward, and the semicircular boss 135 in the third chamber 131 in the outer sleeve 13 will contact the eight-shaped groove 121 on the retaining spring 12, and the retaining spring 12 will be synchronously stretched open, so that the single-core UPC optical fiber adapter 2 can be pulled out, and the single-core UPC optical fiber plug 1 and the single-core UPC optical fiber adapter 2 can be separated. In this embodiment, the single-core UPC optical fiber plug 1 and the single-core UPC optical fiber adapter 2 cooperate with each other, and the original square interface is changed to a circular interface to realize the single-core UPC direct plug-in and pull-out optical fiber connection regardless of direction. Without direction adjustment, the blind plug connection effect of the single-core UPC can be achieved, which improves the efficiency of the single-core UPC connection, thereby improving the work efficiency of operation and maintenance and avoiding work errors.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A single-core UPC non-directional plug-in optical fiber connector, characterized in that: It comprises a single-core UPC optical fiber plug (1) and a single-core UPC optical fiber adapter (2), wherein the single-core UPC optical fiber plug (1) and the single-core UPC optical fiber adapter (2) cooperate with each other and are used for single-core UPC optical fiber connection without distinguishing directions by direct plugging and unplugging; The single-core UPC optical fiber plug (1) comprises an inner sleeve (11), a retaining spring (12), an outer sleeve (13), a core plug (14), a spring (15), a spring seat (16), an aramid pressure ring (17), an outer skin pressure ring (18), a tail sleeve (19) and a landing base (110); the retaining spring (12) is arranged on the inner sleeve (11) and is used for clamping the single-core UPC optical fiber adapter; the outer sleeve (13) is sleeved on the inner sleeve (11); the core plug (14) is arranged in the inner sleeve (11). , the spring (15) is arranged at the head of the spring seat (16), the tail of the ferrule (14) is connected to the head of the spring seat (16), the aramid pressure ring (17) is arranged at the tail of the spring seat (16) for crimping the aramid fiber, the outer skin pressure ring (18) is arranged at the tail of the aramid pressure ring (17) for crimping the outer skin of the optical fiber, the tail sleeve (19) is sleeved on the tail of the spring seat (16), and the landing base (110) is arranged on the outer sleeve (13); The single-core UPC optical fiber adapter (2) comprises an adapter seat (21), a sleeve (22), a pressure cap (23) and a socket (24); the sleeve (22) is arranged in the inner hole of the adapter seat (21) through the pressure cap (23); the socket (24) is arranged on the adapter seat (21); the socket (24) is in a cylindrical cavity structure; a U-shaped groove (25) is arranged on the outer side of the socket (24); the U-shaped groove (25) cooperates with the retaining spring (12); and a guide angle (26) is arranged on the outer edge of the socket (24).

2. The single-core UPC non-directional plug-in optical fiber connector according to claim 1, characterized in that: The inner sleeve (11) is in a cylindrical cavity structure. A first chamber (111) and a second chamber (112) are arranged inside the inner sleeve (11). The first chamber (111) and the second chamber (112) are connected. A first internal thread (113) matching with the spring seat (16) is arranged inside the second chamber (112). The head of the inner sleeve (11) is symmetrically provided with notches (114). The notches (114) are connected with the first chamber (111). The notches (114) match with the retaining ring (12). A first step (115) and a second step (116) are arranged on the outer cylindrical surface of the inner sleeve (11). A convex surface (117) matching with the outer sleeve (13) is symmetrically arranged on the first step (115).

3. The single-core UPC non-directional plug-in optical fiber connector according to claim 2, characterized in that: The clamping spring (12) has a U-shaped structure, and two sides of the opening of the clamping spring (12) are provided with splayed openings (121).

4. The single-core UPC non-directional direct plug-in optical fiber connector according to claim 2, characterized in that: The outer sleeve (13) is in the form of a cylindrical cavity structure, and a third chamber (131) and a fourth chamber (132) are arranged inside the outer sleeve (13), a closed stopper (133) is arranged on the outer edge of the third chamber (131), a platform (134) is symmetrically arranged inside the third chamber (131), and the platform (134) cooperates with the convex surface (117), a semicircular boss (135) is arranged on the top side of the third chamber (131), and a horizontal boss (136) is arranged on the bottom side of the third chamber (131), and a first external thread (137) that cooperates with the landing base (110) is arranged on the outer cylindrical surface of the tail of the outer sleeve (13).

5. The single-core UPC non-directional plug-in optical fiber connector according to claim 2, characterized in that: The spring seat (16) is in the form of a cylindrical cavity structure, a fifth chamber (161) and a sixth chamber (162) are arranged inside the spring seat (16), a second external thread (163) matching with the first internal thread (113) is arranged on the external cylindrical surface of the head of the spring seat (16), a clamping groove (164) matching with the tail sleeve (19) is arranged on the external cylindrical surface of the spring seat (16), and an aramid crimping portion (165) matching with the aramid pressure ring (17) is arranged at the tail of the spring seat (16).

6. The single-core UPC non-directional direct plug-in optical fiber connector according to claim 4, characterized in that: The landing base (110) is in the form of a cylindrical cavity structure, a seventh chamber (1101) and an eighth chamber (1102) are arranged in the landing base (110), a second internal thread (1103) matching with the first external thread (137) is arranged in the seventh chamber (1101), and convex points are evenly arranged on the middle outer cylindrical surface of the landing base (110).

7. The single-core UPC non-directional direct plug-in optical fiber connector according to claim 1, characterized in that: A mounting boss (27) is arranged in the middle of the adapter seat (21), mounting holes (28) are symmetrically arranged on the mounting boss (27), and a standard FC thread structure (29) is arranged at the rear of the adapter seat (21).

8. The single-core UPC non-directional direct plug-in optical fiber connector according to claim 5, characterized in that: The outer surface of the aramid crimping portion (165) is provided with knurling.

9. The single-core UPC non-directional direct plug-in optical fiber connector according to claim 5, characterized in that: A limiting boss (166) is provided in the middle of the spring seat (16), a sealing groove (167) is provided on one side of the limiting boss (166), and a sealing ring (168) is provided in the sealing groove (167).

10. The single-core UPC non-directional direct plug-in optical fiber connector according to claim 2, characterized in that: The outer edge of the first chamber (111) of the inner sleeve (11) is provided with a chamfer (118).

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