Optical fiber quick connector

Abstract

The utility model relates to an optical fiber quick connector which comprises a main body frame sleeve, an outer frame sleeve arranged on the main body frame sleeve in a sleeving mode, an insertion core, a locking mechanism and a tail sleeve, and the insertion core, the locking mechanism and the tail sleeve are sequentially arranged in the main body frame sleeve. The locking mechanism comprises a locking base, a pressing groove formed in the outer wall of the locking base, a pressing block arranged in the pressing groove, a locking sliding sleeve arranged on the pressing block and the locking sleeve in a sleeving mode, a reset spring arranged at the end, facing the tail sleeve, of the locking base, and a pushing sleeve arranged on the tail sleeve in a sleeving mode. A pre-embedded insertion hole for insertion of the pre-embedded optical fiber is formed in the center of the locking sleeve, the pressing block is of a wedge-shaped structure and is pressed on the pre-embedded optical fiber in the pre-embedded insertion hole, and the inner end of the pushing sleeve is connected with the locking sliding sleeve. The design can greatly improve the safety and reliability of optical fiber connection, and is simple and quick to operate and convenient to use.

Description

Technical Field

[0001] This application relates to the field of fiber optic connector technology, and more specifically, to a fiber optic quick connector. Background Technology

[0002] Fiber optic connectors are devices that provide detachable (movable) connections between optical fibers. They are widely used in the field of optical communication. By connecting the fiber optic connector to the external optical fiber and then plugging the connector into the device, optical signals can be transmitted.

[0003] External optical fiber is the bare optical fiber exposed after the protective layer of the optical cable is stripped. In daily use, optical fiber cables are inevitably subjected to tension. In order to ensure the safe and reliable connection between the external optical fiber and the pre-embedded optical fiber in the connector, a locking mechanism is required to clamp the external optical fiber and the pre-embedded optical fiber. However, the existing locking mechanism of optical fiber connector has the disadvantages of complex structure, cumbersome operation, poor stability and high production difficulty. Utility Model Content

[0004] To address the technical problems of complex structure, cumbersome operation, and poor stability of existing fiber optic connector locking mechanisms, this application provides a quick fiber optic connector that can stably lock pre-embedded and access fibers. Furthermore, it features a simple structure and is easy, convenient, and quick to operate.

[0005] The technical solution adopted in this application is to provide a fiber optic quick connector, including a main frame, an outer frame sleeve fitted on the main frame, a ferrule, a locking mechanism, and a tail sleeve arranged sequentially inside the main frame. The locking mechanism contains a pre-embedded optical fiber and includes a locking seat, a pressing groove on the outer wall of the locking seat, a pressing block in the pressing groove, a locking slide sleeve fitted on the pressing block and the locking sleeve, a return spring on the end of the locking seat facing the tail sleeve, and a push sleeve fitted on the tail sleeve. The locking sleeve has a pre-embedded insertion hole at its center for inserting the pre-embedded optical fiber. One end of the pre-embedded optical fiber is connected to the ferrule, and the other end is inserted into the pre-embedded insertion hole. The bottom of the pressing groove intersects with the upper side of the insertion hole. The pressing block has a wedge-shaped structure and presses against the pre-embedded optical fiber in the pre-embedded insertion hole. The inner end of the push sleeve is connected to the locking slide sleeve, and the inner end of the tail sleeve abuts against the outer end of the return spring.

[0006] In one embodiment of the fiber optic quick connector according to this application, the locking mechanism further includes a lock core frame sleeve disposed at the other end of the locking seat; the inner end of the ferrule is inserted into the lock core frame sleeve.

[0007] According to one embodiment of the fiber optic quick connector described in this application, the locking mechanism further includes a push connecting plate disposed at the inner end of the push sleeve, a limiting hole disposed at the inner end of the push connecting plate, and a limiting post disposed on the outer periphery of the locking slide sleeve; the limiting hole is fitted onto the limiting post.

[0008] According to one embodiment of the fiber optic quick connector described in this application, the locking mechanism further includes a clearance opening disposed on the end of the main frame facing the tail sleeve, and a push protrusion disposed on the outer periphery of the push sleeve corresponding to the clearance opening; the push protrusion passes through the clearance opening and protrudes outward.

[0009] According to one embodiment of the fiber optic quick connector described in this application, the locking mechanism further includes an elongated slot on the outer wall of the main frame facing the tail sleeve, a first cantilever suspended in the elongated slot, a positioning protrusion on the inner wall of the first cantilever, and a positioning groove on the outer side of the second cantilever on the push sleeve; the elongated slot is a long strip-shaped through hole with its length direction consistent with the pre-embedded optical fiber, one end of the first cantilever is fixed to the inner wall of one end of the elongated slot, and the other end extends towards the other end of the elongated slot, and the positioning groove corresponds to and is adapted to the positioning protrusion.

[0010] According to one embodiment of the fiber optic quick connector described in this application, the tail sleeve is provided with a wire locking mechanism, the wire locking mechanism including a locking hole disposed on the outer wall of the tail sleeve, a push rod disposed in the locking hole, and a tightening protrusion disposed on the inner side of the second cantilever on the push sleeve; the tightening protrusion corresponds to the push rod.

[0011] According to one embodiment of the fiber optic quick connector described in this application, the locking mechanism further includes a third cantilever symmetrically arranged on the outer wall of the tail sleeve, a mounting hole arranged on the cantilever end of the third cantilever, a limiting head arranged on the outer end of the top rod, and a limiting groove arranged on the limiting head; the tightening protrusion corresponds to the limiting groove, the inner wall of the mounting hole has a stepped structure, the limiting head rests in the mounting hole, one end of the third cantilever is fixed to the outer wall of the tail sleeve, and the other end extends towards the outer end of the tail sleeve.

[0012] The beneficial effects of this application are that the fiber optic quick connector according to the embodiments of this application clamps the pre-embedded fiber and the bare fiber through the locking mechanism, and clamps the cable in combination with the wire locking mechanism, forming a double limit, which greatly improves the safety and reliability of the connection, reduces the structural complexity, and is simple, quick and easy to use. Attached Figure Description

[0013] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of a fiber optic quick connector according to an embodiment of this application;

[0015] Figure 2 yes Figure 1 An exploded view of the fiber optic quick connector shown.

[0016] Figure 3 This is a schematic diagram of the connection structure between the main frame and the tail sleeve in one embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the connection structure between the locking seat and the clamping block in one embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the locking seat in one embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the structure of the clamping block in one embodiment of this application;

[0020] Figure 7 yes Figure 1 The diagram shows a cross-sectional view of the fiber optic quick connector.

[0021] Reference numerals: 100 - Fiber optic quick connector; 1 - Main frame; 11 - Clearance opening; 12 - Long slot; 13 - First cantilever; 14 - Positioning protrusion; 2 - Outer frame; 3 - Ferrule; 4 - Tail sleeve; 5 - Embedded fiber; 6 - Locking mechanism; 61 - Locking seat; 611 - Embedded jack; 62 - Pressing groove; 63 - Pressing block; 64 - Locking slide sleeve; 641 - Limiting post; 65 - Return spring; 66 - Push sleeve; 661 - Hand-push boss; 662 - Second cantilever; 663 - Positioning groove; 664 - Tightening protrusion; 67 - Lock cylinder frame sleeve; 671 - Slot; 672 - Through hole; 68 - Push connecting plate; 681 - Limiting hole; 7 - Wire locking mechanism; 71 - Lock hole; 72 - Top rod; 73 - Third cantilever; 74 - Mounting hole; 75 - Limiting head; 76 - Limiting groove; 8 - Fiber optic cable; 81 - Bare fiber optic cable. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0023] like Figure 1-7As shown, this utility model provides a fiber optic quick connector 100, including a main frame 1, an outer frame 2 sleeved on the main frame 1, a ferrule 3, a locking mechanism 6, and a tail sleeve 4 sequentially arranged inside the main frame 1. The locking mechanism 6 houses a pre-embedded optical fiber 5 and includes a locking seat 61, a pressing groove 62 on the outer wall of the locking seat 61, a pressing block 63 within the pressing groove 62, a locking slide sleeve 64 sleeved on the pressing block 63 and the locking seat 61, and a return spring on the end of the locking seat 61 facing the tail sleeve 4. The spring 65 and the push sleeve 66 fitted on the tail sleeve 4; the locking seat 61 is provided with a pre-embedded insertion hole 611 for the pre-embedded optical fiber 5 to be inserted at the center position. One end of the pre-embedded optical fiber 5 is connected to the ferrule 3 and the other end is inserted into the pre-embedded insertion hole 611. The bottom of the pressing groove 62 intersects with the upper side of the pre-embedded insertion hole 611. The pressing block 63 is a wedge-shaped structure. The pressing block 63 presses against the pre-embedded optical fiber 5 in the pre-embedded insertion hole 611. The inner end of the push sleeve 66 is connected to the locking slide sleeve 64. The inner end of the tail sleeve 4 abuts against the outer end of the return spring 65.

[0024] The outer frame 2 is fitted onto the outer periphery of the main frame 1 at one end with the insert 3. During use, it is simultaneously inserted into the device port along with the end of the main frame 1, forming a communication connection with the device through the insert 3. The locking seat 61 is a long strip structure with a cross-sectional shape adapted to the inner cavity of the main frame 1. The pre-embedded optical fiber 5 is inserted into the pre-embedded socket 611 of the locking seat 61. The clamping groove 62 is a long groove structure located on the outer wall of one side of the locking seat 61. The bottom plane of the clamping groove 62 intersects with the upper part of the pre-embedded socket 611, leaving the upper part of the pre-embedded socket 611 open. The upper side of the pre-embedded optical fiber 5 is exposed within the clamping groove 62. The clamping block 63 is placed within the clamping groove 62, pressing down on the exposed pre-embedded optical fiber 5. The clamping block 63 is wedge-shaped. The side facing away from the clamping groove 62 is a slope, and the end facing the ferrule 3 is higher than the end of the push sleeve 66. The locking sleeve 64 is slidably fitted on the clamping block 63 and the locking seat 61, and the push sleeve 66 is slidably fitted on the tail sleeve 4. When the bare optical fiber 81 is inserted into the pre-embedded socket 611 of the locking seat 61 and abuts against the pre-embedded optical fiber 5, the push sleeve 66 is manually pushed to drive the locking sleeve 64 to slide, thereby clamping the clamping block 63 and the locking seat 61. This strengthens the clamping force of the clamping block 63 on the pre-embedded optical fiber 5 and the bare optical fiber 81, making it less likely for them to separate under tension, greatly improving the connection stability and reliability. Moreover, the structure is simple and easy to operate, ensuring the pull-out force of the optical fiber quick connector 100.

[0025] like Figure 2-3 As shown, the locking mechanism 6 also includes a lock cylinder frame 67 disposed at the other end of the locking seat 61; the inner end of the mortise 3 is inserted into the lock cylinder frame 67.

[0026] One end of the lock cylinder frame 67 is provided with a slot 671 for inserting the ferrule 3. The ferrule 3 is inserted and locked in the slot 671. The other end is provided with a through hole 672 for the pre-embedded optical fiber 5 to pass through. The through hole 672 is connected to the slot 671. The position of the ferrule 3 can be positioned and limited by the lock cylinder frame 67, making installation and use more convenient.

[0027] like Figure 2 As shown, the locking mechanism 6 further includes a push connecting plate 68 disposed at the inner end of the push sleeve 66, a limiting hole 681 disposed at the inner end of the push connecting plate 68, and a limiting post 641 disposed on the outer periphery of the locking slide sleeve 64; the limiting hole 681 is fitted onto the limiting post 641.

[0028] The push connecting plate 68 is used to connect the push sleeve 66 and the locking slide sleeve 64. The connection method adopts the insertion method of the limit post 641 and the limit hole 681. The connection method is simple and effective, and convenient for disassembly and assembly.

[0029] like Figure 2 As shown, the locking mechanism 6 also includes a clearance opening 11 on the end of the main frame 1 facing the tail sleeve 4, and a push protrusion 661 on the outer periphery of the push sleeve 66 corresponding to the clearance opening 11; the push protrusion 661 passes through the clearance opening 11 and protrudes outward. The operator can hold the push protrusion 661 and push the push sleeve 66, which is convenient to operate and more convenient to use.

[0030] like Figure 2-3 As shown, the locking mechanism 6 also includes a long slot 12 on the outer wall of the main frame 1 facing the tail sleeve 4, a first cantilever 13 suspended in the long slot 12, a positioning protrusion 14 on the inner wall of the first cantilever 13, and a positioning groove 663 on the outer side of the second cantilever 662 on the push sleeve 66; the long slot 12 is a long strip-shaped through hole and its length direction is consistent with the pre-embedded optical fiber 5; one end of the first cantilever 13 is fixed to the inner wall of one end of the long slot 12, and the other end extends towards the other end of the long slot 12; the positioning groove 663 corresponds to and is adapted to the positioning protrusion 14.

[0031] The positioning protrusion 14 is located on the inner wall of the cantilever end of the first cantilever 13, corresponding to the positioning groove 663 on the outer wall of the push sleeve 66. The first cantilever 13 is elastic, and the cantilever end can swing up and down, making it easier to install and less prone to damage. Pushing the push sleeve 66 until the positioning protrusion 14 is pressed against the positioning groove 663 and then stopping the push, achieves the positioning and limiting of the push sleeve 66.

[0032] like Figure 3 and Figure 7As shown, the tail sleeve 4 is provided with a locking mechanism 7. The locking mechanism 7 includes a locking hole 71 disposed on the outer wall of the tail sleeve 4, a push rod 72 disposed in the locking hole 71, and a tightening protrusion 664 disposed on the inner side of the second cantilever 662 on the push sleeve 66; the tightening protrusion 664 corresponds to the push rod 72.

[0033] The tail sleeve 4 has a horn-shaped structure. The outer end of the tail sleeve 4 is a horn opening, and the inner end is a through hole for the bare optical fiber 81 to pass through. After the bare optical fiber 81 is inserted into place, the optical fiber cable 8 is located inside the horn opening. At this time, the tail sleeve 4 is inserted into the push sleeve 66. After it is in place, the push protrusion 664 presses against the outer end of the push rod 72, pressing the push rod 72 inward. The two push rods 72 clamp the optical fiber cable 8. Together with the locking mechanism 6, they clamp the pre-embedded optical fiber 5 and the bare optical fiber 81, forming two clamps, which further improves the stability and reliability of the connection.

[0034] like Figure 3 and Figure 7 As shown, the locking mechanism 7 also includes a third cantilever 73 symmetrically arranged on the outer wall of the tail sleeve 4, a mounting hole 74 arranged on the cantilever end of the third cantilever 73, a limiting head 75 arranged on the outer end of the top rod 72, and a limiting groove 76 arranged on the limiting head 75; the tightening protrusion 664 corresponds to the limiting groove 76, the inner wall of the mounting hole 74 has a stepped structure, the limiting head 75 is placed in the mounting hole 74, one end of the third cantilever 73 is fixed to the outer wall of the tail sleeve 4, and the other end extends towards the outer end of the tail sleeve 4.

[0035] The third cantilever 73 has the same function as the first cantilever 13. The limiting head 75 is placed in the mounting hole 74. The initial position of the top rod 72 can be positioned and limited by the mounting hole 74 and the limiting head 75. The cantilever end of the third cantilever 73 can swing up and down. When the tightening protrusion 664 is not pressed against the limiting head 75, the distance between the two top rods 72 is greater than the outer diameter of the optical fiber cable 8, which does not hinder the insertion of the optical fiber cable 8. When the tightening protrusion 664 is pressed against the limiting head 75, the limiting head 75 is pressed down, so that the two top rods 72 clamp the optical fiber cable 8. The limiting groove 76 on the limiting head 75 cooperates with the tightening protrusion 664 to position and limit the position of the tail sleeve 4. It is very convenient to use and disassemble.

[0036] The usage process of this design is as follows: Strip the outer sheath of the end of the fiber optic cable 8 to form a bare fiber optic cable 81. Insert the bare fiber optic cable 81 into the tail sleeve 4, and then insert the tail sleeve 4 into the push sleeve 66. At the same time, insert the bare fiber optic cable 81 into the pre-embedded insertion hole 611 of the locking seat 61, and connect it tightly with the pre-embedded fiber optic cable 5. Push the push sleeve 66 by holding the push boss 661. The push connection plate 68 drives the locking slide sleeve 64 to move, tightening the clamping block 63 in the clamping groove 62, thus completing the connection. The operation is simple, quick, and convenient. Furthermore, while the positioning groove 663 on the outer side of the second cantilever 662 engages with the positioning protrusion 14 on the inner wall of the first cantilever 13 on the main frame sleeve 1 for locking, the tightening protrusion 664 on the inner side of the second cantilever 662 engages with the limiting groove 76 on the limiting head 75 at the outer end of the top rod 72 on the tail sleeve 4 for locking. Thus, the pre-embedded optical fiber 5 and the bare optical fiber 81 are clamped by the locking mechanism 6, and the optical fiber cable 8 is clamped by the wire locking mechanism 7, forming a double limiting, which greatly improves the safety and reliability of the connection.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fiber optic quick connector (100), comprising a main frame (1), an outer frame (2) fitted onto the main frame (1), a ferrule (3) sequentially disposed within the main frame (1), a locking mechanism (6), and a tail sleeve (4), wherein a pre-embedded optical fiber (5) is disposed within the locking mechanism (6), characterized in that: The locking mechanism (6) includes a locking seat (61), a pressing groove (62) provided on the outer wall of the locking seat (61), a pressing block (63) provided in the pressing groove (62), a locking slide sleeve (64) sleeved on the pressing block (63) and the locking seat (61), a return spring (65) provided on the end of the locking seat (61) facing the tail sleeve (4), and a push sleeve (66) sleeved on the tail sleeve (4); The locking seat (61) has a pre-embedded insertion hole (611) at its center for inserting a pre-embedded optical fiber (5). One end of the pre-embedded optical fiber (5) is connected to the ferrule (3), and the other end is inserted into the pre-embedded insertion hole (611). The bottom of the pressing groove (62) intersects with the upper side of the pre-embedded insertion hole (611). The pressing block (63) is a wedge-shaped structure. The pressing block (63) presses against the pre-embedded optical fiber (5) in the pre-embedded insertion hole (611). The inner end of the pushing sleeve (66) is connected to the locking sliding sleeve (64). The inner end of the tail sleeve (4) abuts against the outer end of the reset spring (65).

2. The fiber optic quick connector (100) according to claim 1, characterized in that: The locking mechanism (6) also includes a lock cylinder frame (67) disposed at the other end of the locking seat (61); the inner end of the mortise (3) is inserted into the lock cylinder frame (67).

3. The fiber optic quick connector (100) of claim 1, characterized in that: The locking mechanism (6) further includes a push connecting plate (68) disposed at the inner end of the push sleeve (66), a limiting hole (681) disposed at the inner end of the push connecting plate (68), and a limiting post (641) disposed on the outer periphery of the locking slide sleeve (64); the limiting hole (681) is fitted onto the limiting post (641).

4. The fiber optic quick connector (100) of claim 1, characterized in that: The locking mechanism (6) also includes a clearance opening (11) on the end of the main frame (1) facing the tail sleeve (4) and a push protrusion (661) on the outer periphery of the push sleeve (66) corresponding to the clearance opening (11); the push protrusion (661) passes through the clearance opening (11) and protrudes outward.

5. The fiber optic quick connector (100) of claim 1, characterized in that: The locking mechanism (6) further includes a long slot (12) on the outer wall of the main frame (1) facing the tail sleeve (4), a first cantilever (13) suspended in the long slot (12), a positioning protrusion (14) on the inner wall of the first cantilever (13), and a positioning groove (663) on the outer side of the second cantilever (662) on the push sleeve (66). The long slot (12) is a long strip-shaped through hole and its length direction is consistent with the pre-embedded optical fiber (5). One end of the first cantilever (13) is fixed to the inner wall of one end of the long slot (12), and the other end extends towards the other end of the long slot (12). The positioning groove (663) corresponds to and is adapted to the positioning protrusion (14).

6. The fiber optic quick connector (100) of claim 1, characterized in that: The tail sleeve (4) is provided with a locking mechanism (7), which includes a locking hole (71) disposed on the outer wall of the tail sleeve (4), a push rod (72) disposed in the locking hole (71), and a tightening protrusion (664) disposed on the inner side of the second cantilever (662) on the push sleeve (66); the tightening protrusion (664) corresponds to the push rod (72).

7. The fiber optic quick connector (100) of claim 6, characterized in that: The locking mechanism (7) further includes a third cantilever (73) symmetrically arranged on the outer wall of the tail sleeve (4), a mounting hole (74) arranged on the cantilever end of the third cantilever (73), a limiting head (75) arranged on the outer end of the top rod (72), and a limiting groove (76) arranged on the limiting head (75); the tightening protrusion (664) corresponds to the limiting groove (76), the inner wall of the mounting hole (74) is a stepped structure, the limiting head (75) is placed in the mounting hole (74), one end of the third cantilever (73) is fixed to the outer wall of the tail sleeve (4), and the other end extends towards the outer end of the tail sleeve (4).

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