Joint tail sleeve connector with changeable polarity

Abstract

The invention discloses a polarity-changeable combined tail sleeve connector. The polarity-changeable combined tail sleeve connector comprises an inner frame sleeve, an optical fiber cable, a first pair of plugs, a second pair of plugs, an outer frame sleeve and an unlocking tail sleeve, wherein the optical fiber cable is fixedly connected with one end of the inner frame sleeve; the first pair of plugs and the second pair of plugs are fixedly connected with the other end of the inner frame sleeve; when polarity needs to be changed, the outer frame sleeve and the unlocking tail sleeve are unlocked, then the outer frame sleeve and the inner frame sleeve retreat towards the direction of the optical fiber cable while being unlocked, after the whole unlocking tail sleeve retreats to the position of the optical fiber cable, the outer frame sleeve is rotated by 180 degrees, the outer frame sleeve retreats towards the outside, and then the outer frame sleeve is rotated by 180 degrees, so that the polarity can be changed. And then the outer frame sleeve is pushed towards the inner frame sleeve until the outer frame sleeve is buckled with the inner frame sleeve until the unlocking tail sleeve is buckled with the inner frame sleeve and the unlocking tail sleeve is elastically pressed and buckled with the outer frame sleeve, so that the polarity conversion can be completed, and the polarity conversion is simple, rapid and convenient. And the unlocking tail sleeve is buckled with the outer frame sleeve in an elastic pressing manner and is also buckled with the inner frame sleeve, so that the overall structure is more stable, and the stability of overall signal transmission is further ensured.

Description

Technical Field

[0001] The invention relates to a polarity-changeable combined tail sleeve connector. Background Art

[0002] Fiber optic connectors are devices that make detachable connections between optical fibers. They precisely connect the two end faces of optical fibers so that the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent. With the increasing demand for communication bandwidth, optical fibers have been widely used in wired communication networks. Most of today's fiber optic systems use a pair of optical fibers for transmission, one for forward signal transmission and the other for reverse transmission. When installing and maintaining such systems, special attention should be paid to whether the signal is transmitted on the corresponding optical fiber to ensure that the correct transmission and reception polarity is always maintained. The existing interchangeable polarity optical fiber connectors have too complex structures and are inconvenient to reverse polarity. In addition, many polarity-reversible optical fiber connectors are unstable in order to reverse polarity, thereby affecting the overall signal transmission effect and service life. The present invention is dedicated to solving the above problems. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a polarity-changeable combined tail sleeve connector.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a polarity-changeable combined tail sleeve connector, comprising an inner frame sleeve, an optical fiber cable fixedly connected to one end of the inner frame sleeve, a first pair of plugs and a second pair of plugs fixedly connected to the other end of the inner frame sleeve, an outer frame sleeve, and an unlocking tail sleeve, wherein the outer frame sleeve is sleeved on the first pair of plugs and the second pair of plugs and buckled with the outer side of the inner frame sleeve, the optical fiber cable is connected to the first pair of plugs and the second pair of plugs and extends out of the inner frame sleeve through the interior of the inner frame sleeve, the unlocking tail sleeve is sleeved on the outer side of the inner frame sleeve and buckled with the outer frame sleeve under elastic pressure, the outer frame sleeve is provided with an elastic pressure sheet, and the unlocking tail sleeve is provided with an elastic pressure buckle, and the elastic pressure buckle is elastically buckled with the elastic pressure sheet.

[0005] Preferably, a first elastic arm and a second elastic arm are provided on both sides of the inner frame sleeve, the first elastic arm extends toward the direction of the optical fiber cable, the second elastic arm extends toward the direction of the first pair of plugs and the second pair of plugs, a first buckle position is provided on the outer side of the end of the first elastic arm, the second elastic arm is provided with a second buckle position and a gear position, the second buckle position is arranged on the outer side of the end of the second elastic arm, the gear position is arranged on the outer side of the middle part of the second elastic arm, a space one is provided between the second buckle position and the gear position, the unlocking tail sleeve is buckled with the first buckle position, and the inner frame sleeve is buckled with the second buckle position.

[0006] Preferably, the inner frame is provided with a first inner frame and a second inner frame, the first inner frame is connected to the second inner frame, the width of the first inner frame is smaller than the width of the second inner frame, the first inner frame faces the optical fiber cable, and the second inner frame faces the first pair of plugs and the second pair of plugs.

[0007] Preferably, the second inner frame has one end facing the first pair of plugs and the second pair of plugs provided with a first mounting opening and a second mounting opening arranged side by side, the first mounting opening and the second mounting opening have mounting grooves at their bottoms and sides, and a U-shaped stop is provided in the center of the second inner frame.

[0008] Preferably, the unlocking tail sleeve comprises an unlocking frame and a tail sleeve buckled with the unlocking frame, both sides of the unlocking frame are provided with first buckle windows buckled with the first buckle position and a notch avoiding the gear position, the tail sleeve of the unlocking tail sleeve is buckled on the outside of the optical fiber cable, the unlocking frame is provided with a buckling wall extending to the upper side of the outer frame sleeve, the spring-pressed buckle is arranged at the end of the buckling wall facing the outside, a space two is arranged between the bottom of the spring-pressed buckle and the tops of the inner frame sleeve and the outer frame sleeve, the spring-pressed buckle is arranged at the bottom of the buckling wall and two are arranged, a positioning groove is arranged between the two spring-pressed buckles, a positioning notch groove is arranged at the bottom of the positioning groove, the spring-pressed buckle and the positioning groove are arranged within the space two, and a space three is arranged between the end of the first buckle window facing the spring-pressed buckle and the first buckle position.

[0009] Preferably, the outer frame sleeve includes an outer frame body sleeved on the outside of the inner frame sleeve, a first outer frame head fixedly connected to the outer frame body and sleeved on the outside of the first pair of plugs, and a second outer frame head fixedly connected to the outer frame body and sleeved on the outside of the second pair of plugs. The outer frame body is provided with a second buckle window buckled with the second buckle position, and the end of the outer frame body facing the second buckle window is limited within the space one. The top of the outer frame body is provided with a positioning column connected to the positioning notch groove, and a positioning ridge fixedly connected to the positioning column and engaged with the positioning groove. The spring-pressing sheet includes a first spring sheet arranged on the top of the first outer frame head and a second spring sheet arranged on the top of the second outer frame head. The first spring sheet has the same structure as the second spring sheet.

[0010] Preferably, the top of the first spring sheet is fixedly connected to a part of the outer frame body away from the outer frame body with a spring-pressing arc arm facing the outer frame body, and part of the spring-pressing arc arm is arranged in the second empty space, and the spring-pressing arc arm extends over the top of the outer frame body and the inner frame sleeve, and the spring-pressing arc arm is arched upward, and a buckle hole is provided on the top of the spring-pressing arc arm, and the spring-pressing buckle is buckled with the buckle hole, and the top of the spring-pressing arc arm is in contact with the buckling wall, and the buckle hole is provided at one end facing the tail sleeve with a connecting chamfer connecting the buckle hole and the top of the spring-pressing arc arm.

[0011] The beneficial effect of the present invention is to provide a polarity-changeable joint tail sleeve connector, wherein the unlocked tail sleeve is buckled with both the inner frame sleeve and the outer frame sleeve at the same time, ensuring that the overall structure is more stable, thereby ensuring the stability of the overall signal transmission. When the polarity needs to be changed, the outer frame sleeve and the unlocked tail sleeve are unlocked, the unlocked tail sleeve is withdrawn toward the direction of the optical fiber cable, the buckling of the inner frame sleeve of the unlocked tail sleeve is released, and then the unlocked tail sleeve is continued to be withdrawn toward the direction of the optical fiber cable. When the entire unlocked tail sleeve is withdrawn to the position of the optical fiber cable, the unlocked tail sleeve is rotated 180°, and at the same time, the outer frame sleeve and the unlocked tail sleeve are unlocked, and the outer frame sleeve is unlocked from the inner frame sleeve, and the outer frame sleeve can be withdrawn toward the outside, and then the outer frame sleeve is rotated 180° to change, and after the outer frame sleeve is rotated 180°, the outer frame sleeve is pushed toward the direction of the inner frame sleeve until it is buckled with the inner frame sleeve, and then the unlocked tail sleeve is pulled in toward the direction of the first pair of plugs and the second pair of plugs until the unlocked tail sleeve is buckled with the inner frame sleeve and the unlocked tail sleeve is buckled with the outer frame sleeve, and the polarity conversion can be completed, which is simple, fast and convenient. In the present invention, the unlocking tail sleeve is buckled with both the outer frame sleeve and the inner frame sleeve, so that the overall structure is more stable, thereby ensuring the stability of the overall signal transmission.

[0012] The structure of this embodiment is simple and stable, and the polarity can be easily changed by pulling the unlocking tail sleeve. In the present invention, the unlocking tail sleeve is buckled with the outer frame sleeve and buckled with the inner frame sleeve, and the overall structure is more stable, thereby ensuring the stability of the overall signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic structural diagram of a polarity-changeable combined tail sleeve connector.

[0014] Figure 2 The invention discloses an exploded structural diagram of a polarity-changeable combined tail sleeve connector.

[0015] Figure 3 It is a partial structural schematic diagram of a polarity-changeable combined tail sleeve connector of the present invention.

[0016] Figure 4 The present invention is a partial structural schematic diagram of an inner frame sleeve of a polarity-changeable combined tail sleeve connector.

[0017] Figure 5 The present invention is a schematic structural diagram of an unlocking tail sleeve of a combined tail sleeve connector with interchangeable polarity.

[0018] Figure 6 The present invention is a schematic structural diagram of an outer frame sleeve of a polarity-changeable combined tail sleeve connector. DETAILED DESCRIPTION

[0019] The implementation modes of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation modes of the present invention are not limited to the following embodiments, and the present invention relates to relevant necessary components in the technical field, which should be regarded as the known technology in the technical field and can be known and mastered by the technical personnel in the technical field.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "one", "two", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. It should also be noted in the description of the present invention that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Reference Figures 1 to 6 The present invention is implemented as follows: a polarity-changeable joint tail sleeve connector, The utility model comprises an inner frame sleeve 1, an optical fiber cable 2 fixedly connected to one end of the inner frame sleeve 1, a first pair of plugs 3 and a second pair of plugs 4 fixedly connected to the other end of the inner frame sleeve 1, an outer frame sleeve 5, and an unlocking tail sleeve 6, wherein the outer frame sleeve 5 is sleeved on the first pair of plugs 3 and the second pair of plugs 4 and buckled with the outer side of the inner frame sleeve 1, the optical fiber cable 2 is connected with the first pair of plugs 3 and the second pair of plugs 4 and extends out of the inner frame sleeve 1 through the inside of the inner frame sleeve 1, the unlocking tail sleeve 6 is sleeved on the outer side of the inner frame sleeve 1 and buckled with the outer frame sleeve 5 under elastic pressure, the outer frame sleeve 5 is provided with an elastic sheet 51, and the unlocking tail sleeve 6 is provided with an elastic buckle 63, and the elastic buckle 63 is buckled with the elastic sheet 51 under elastic pressure.

[0022] During signal transmission, the optical fiber cable is divided into two strands and enters the interior of the inner frame sleeve 1 and enters the first pair of plugs 3 and the second pair of plug sleeves respectively. The outer frame sleeve 5 is sleeved on the outside of the first pair of plugs 3 and the second pair of plugs 4, and partially sleeved on the outside of the inner frame sleeve 1 and buckled with the outside of the inner frame sleeve 1. Then, the unlocking tail sleeve 6 is sleeved from the optical fiber cable 2 toward the first pair of plugs 3 and the second pair of plugs 4. The tail of the unlocking tail sleeve 6 is sleeved on the outside of the optical fiber cable 2, the unlocking tail is sleeved on the outside of the inner frame sleeve 1 and buckled with the inner frame sleeve 1, and the unlocking tail sleeve 6 is buckled with the outer frame sleeve 5. The unlocking tail sleeve 6 is buckled with both the inner frame sleeve 1 and the outer frame sleeve 5 at the same time, ensuring that the overall structure is more stable, thereby ensuring the stability of the overall signal transmission.

[0023] When it is necessary to change the polarity, the outer frame sleeve 5 and the unlocking tail sleeve 6 are unlocked, the unlocking tail sleeve 6 is withdrawn toward the direction of the optical fiber cable 2, the buckling of the inner frame sleeve 1 of the unlocking tail sleeve 6 is released, and then the unlocking tail sleeve 6 continues to be withdrawn toward the direction of the optical fiber cable 2. When the entire unlocking tail sleeve 6 is withdrawn to the position of the optical fiber cable 2, the unlocking tail sleeve 6 is rotated 180°, and the outer frame sleeve 5 and the unlocking tail sleeve 6 are unlocked at the same time, the outer frame sleeve 5 and the inner frame sleeve 1 are unlocked, and the outer frame sleeve 5 can be withdrawn toward the outside, and then the outer frame sleeve 5 can be rotated 180° to change it. After the outer frame sleeve 5 is rotated 180°, the outer frame sleeve 5 is pushed toward the direction of the inner frame sleeve 1 until it is buckled with the inner frame sleeve 1, and then the unlocking tail sleeve 6 is pulled in toward the direction of the first pair of plugs 3 and the second pair of plugs 4, until the unlocking tail sleeve 6 is buckled with the inner frame sleeve 1 and the unlocking tail sleeve 6 is buckled with the outer frame sleeve 5, the polarity conversion can be completed, which is simple, fast and convenient. In the present invention, the unlocking tail sleeve 6 is buckled with both the outer frame sleeve 5 and the inner frame sleeve 1, and the overall structure is more stable, thereby ensuring the stability of the overall signal transmission.

[0024] The structure of this embodiment is simple and stable, and the polarity exchange is simple.

[0025] On the basis of the above embodiments, as a further preference, a first elastic arm 11 and a second elastic arm 12 are provided on both sides of the inner frame sleeve 1, the first elastic arm 11 extends toward the optical fiber cable 2, and the second elastic arm 12 extends toward the first pair of plugs 3 and the second pair of plugs 4, a first buckle position 111 is provided on the outer side of the end of the first elastic arm 11, and the second elastic arm 12 is provided with a second buckle position 121 and a gear position 122, the second buckle position 121 is arranged on the outer side of the end of the second elastic arm 12, and the gear position 122 is arranged on the outer side of the middle part of the second elastic arm 12, and a space 123 is provided between the second buckle position 121 and the gear position 122, the unlocking tail sleeve 6 is buckled with the first buckle position 111, and the inner frame sleeve 1 is buckled with the second buckle position 121.

[0026] The inner frame sleeve 1 is provided with a first inner frame 13 and a second inner frame 14. The first inner frame 13 and the second inner frame 14 are connected to each other inside. The width of the first inner frame 13 is smaller than the width of the second inner frame 14. The first inner frame 13 faces the optical fiber cable 2, and the second inner frame 14 faces the first pair of plugs 3 and the second pair of plugs 4.

[0027] The second inner frame 14 has one end facing the first pair of plugs 3 and the second pair of plugs 4 with a first mounting opening 141 and a second mounting opening 142 arranged side by side, the first mounting opening 141 and the second mounting opening 142 have mounting grooves 143 at their bottoms and sides, and a U-shaped stop 144 is provided in the center of the second inner frame 14 .

[0028] The first pair of plugs 3 are installed in the first mounting port 141, and the second pair of plugs 4 are installed in the second mounting port 142. The first pair of plugs 3 and the second pair of plugs 4 are respectively defined in the mounting grooves 143 at the bottom and sides of the first mounting port 141 and the second mounting port 142, to ensure that the first pair of plugs 3 and the second pair of plugs 4 can be accurately and stably installed in the first mounting port 141 and the second mounting port 142 of the inner frame sleeve 1.

[0029] The optical fiber cable 2 is divided into two strands and enters the first inner frame 13 and the second inner frame 14 of the inner frame sleeve 1, and then enters the first pair of plugs 3 and the second pair of plugs 4 respectively. The U-shaped block is arranged in the second inner frame 14. When the optical fiber cable 2 is divided into two strands, before entering the first pair of plugs 3 and the second pair of plugs 4, the U-shaped block separates the two strands of optical fiber cables 2 to ensure that the two strands of optical fiber cables 2 do not interfere with each other and become messy.

[0030] On the basis of the above embodiment, as a further preference, the unlocking tail sleeve 6 includes an unlocking frame 61, a tail sleeve 62 buckled with the unlocking frame 61, and both sides of the unlocking frame 61 are provided with a first buckle window 611 buckled with the first buckle position 111, and a notch 612 avoiding the gear position 122, the tail sleeve 62 of the unlocking tail sleeve 6 is sleeved on the outside of the optical fiber cable 2, the unlocking frame 61 is provided with a buckling wall 614 extending to the upper side of the outer frame sleeve 6, and the spring buckle 63 is arranged on the buckling wall 614 facing the outside. At the end, a space 2 55 is provided between the bottom of the spring buckle 63 and the tops of the inner frame sleeve 1 and the outer frame sleeve 5. The spring buckle 63 is arranged at the bottom of the buckling wall 614 and two are arranged. A positioning groove 6142 is provided between the two spring buckles 63. A positioning notch groove 6143 is provided at the bottom of the positioning groove 6142. The spring buckle 63 and the positioning groove 6142 are arranged within the space 2 55. A space 3 615 is provided between one end of the first buckle window 611 facing the spring buckle 63 and the first buckle position 111.

[0031] When the polarity is exchanged, the buckle connection between the spring buckle 61 and the spring buckle sheet 51 is released, that is, the unlocking tail sleeve 6 and the inner frame sleeve 1 are released. Due to the existence of the vacant position 3 615, the unlocking tail sleeve 6 is pushed toward the direction of the optical fiber cable 2 by the space until there is no vacant position 3 615 between the first buckle position 111 and the first buckle window 611, and then the first elastic arm 11 is pressed toward the center direction of the second inner frame 14 to release the buckle connection between the first buckle position 111 and the second buckle window 521, and then all the buckles of the unlocking tail sleeve 6 and the inner frame sleeve 1 and the outer frame sleeve 5 are released, and then the unlocking tail sleeve 6 can be retreated a distance toward the optical fiber cable 2, and then the unlocking frame 61 is rotated to exchange the polarity. The operation is simple and convenient.

[0032] On the basis of the above embodiments, as a further preference, the outer frame sleeve 5 includes an outer frame body 52 sleeved on the outside of the inner frame sleeve 1, a first outer frame head 53 fixedly connected to the outer frame body 52 and sleeved on the outside of the first pair of plugs 3, and a second outer frame head 54 fixedly connected to the outer frame body 52 and sleeved on the outside of the second pair of plugs 4. The outer frame body 52 is provided with a second buckle window 521 buckled with the second buckle position 121, and the end of the outer frame body 52 facing the second buckle window 521 is limited within the empty position 123. The top of the outer frame body 52 is provided with a positioning column 525 connected to the positioning notch groove 6143, and a positioning ridge 526 fixedly connected to the positioning column 525 and engaged with the positioning groove 6142. The elastic sheet 51 includes a first elastic sheet 531 arranged at the top of the first outer frame head 53, and a second elastic sheet 541 arranged at the top of the second outer frame head 54. The first elastic sheet 531 and the second elastic sheet 541 have the same structure.

[0033] When the buckling between the second buckle window 521 and the second buckle position 121 needs to be released, the buckling between the second buckle position 121 and the second buckle window 521 can be easily released by pressing the shift position 122 .

[0034] The top of the first elastic sheet 531 is fixedly connected to a part of the outer frame body 52 that is away from the outer frame body 52, and a spring-pressing arc arm 5311 is partially arranged in the second space 55, and the spring-pressing arc arm 5311 extends over the outer frame body 52 and the top of the inner frame sleeve 1, and the spring-pressing arc arm 5311 is arched upward, and the spring-pressing arc arm 5311 can be pressed downward in the second space 55. When the spring-pressing arc arm 5311 is pressed, the end portion thereof contacts the top of the inner frame sleeve 1, ensuring that the pressing amplitude of the top of the inner frame sleeve 1 is not too large, thereby increasing the service life of the spring-pressing arc arm 5311. A buckle hole 53111 is provided at the top of the spring-pressing arc arm 5311, and the spring-pressing buckle 63 is buckled with the buckle hole 53111. The top of the spring-pressing arc arm 5311 abuts against the buckling wall 614, and a connecting chamfer 53112 connecting the buckle hole 53111 and the top of the spring-pressing arc arm 5311 is provided at one end of the buckle hole 53111 facing the tail sleeve 62.

[0035] When the outer frame sleeve 5 is sleeved on the outside of the inner frame sleeve 1, the positioning column 525 of the outer frame body 52 enters the positioning notch groove 6143, and the positioning ridge 526 enters the positioning groove 6142, ensuring that the outer frame sleeve and the inner frame sleeve can be accurately positioned and assembled. The second buckle position 121 is buckled with the second buckle window 521. When the outer frame sleeve 5 needs to be released from the buckle, the gear position 122 can be pressed to recess the second elastic arm 12 toward the second inner frame 14, so that the second buckle position 121 and the second buckle window 521 can be released. The operation is simple and convenient.

[0036] By pressing the first spring piece 531 and the second spring piece 541, the spring buckle 61 slides out along the connecting chamfer 53112 toward the optical fiber cable 2, and the buckling connection between the unlocking tail sleeve 6 and the outer frame body 52 can be released. As the spring buckle 61 slides out of the buckle hole 53111, the first elastic arm 11 is pressed to be recessed toward the center direction of the second inner frame 14, and the buckling connection between the first buckle position 111 and the second buckle window 521 can be released. As the unlocking tail sleeve 6 continues to retreat toward the direction of the optical fiber cable 2, the first spring piece 531 and the second spring piece 541 are released. Since the spring arc arm 5311 arches upward, the rebound force of the spring arc arm 5311 causes the first spring piece 531 and the second spring piece 541 to return to their original positions. After the polarity is reversed, the spring buckle 61 is buckled again with the buckle holes 53111 of the first spring piece 531 and the second spring piece 541.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A polarity-changeable joint boot connector, characterized in that The invention comprises an inner frame sleeve (1), an optical fiber cable (2) fixedly connected to one end of the inner frame sleeve (1), a first pair of plugs (3) and a second pair of plugs (4) fixedly connected to the other end of the inner frame sleeve (1), an outer frame sleeve (5), and an unlocking tail sleeve (6); the outer frame sleeve (5) is sleeved on the first pair of plugs (3) and the second pair of plugs (4) and is buckled with the outer side of the inner frame sleeve (1); the optical fiber cable (2) is connected to the first pair of plugs (3) and the second pair of plugs (4) and extends out of the inner frame sleeve (1) through the interior of the inner frame sleeve (1); the unlocking tail sleeve (6) is sleeved on the outer side of the inner frame sleeve (1) and is buckled with the outer frame sleeve (5); the outer frame sleeve (5) is provided with a spring-pressing sheet (51); the unlocking tail sleeve (6) is provided with a spring-pressing buckle (63); the spring-pressing buckle (63) is buckled with the spring-pressing sheet (51).

2. A polarity-changeable joint boot connector as claimed in claim 1, characterized in that A first elastic arm (11) and a second elastic arm (12) are provided on both sides of the inner frame sleeve (1); the first elastic arm (11) extends toward the optical fiber cable (2); the second elastic arm (12) extends toward the first pair of plugs (3) and the second pair of plugs (4); a first buckle position (111) is provided on the outer side of the end of the first elastic arm (11); the second elastic arm (12) is provided with a second buckle position (121) and a gear position (122); the second buckle position (121) is arranged on the outer side of the end of the second elastic arm (12); the gear position (122) is arranged on the outer side of the middle part of the second elastic arm (12); a space (123) is provided between the second buckle position (121) and the gear position (122); the unlocking tail sleeve (6) is buckled with the first buckle position (111); and the inner frame sleeve (1) is buckled with the second buckle position (121).

3. A polarity-changeable joint boot connector as claimed in claim 2, characterized in that The inner frame sleeve (1) is provided with a first inner frame (13) and a second inner frame (14); the first inner frame (13) and the second inner frame (14) are connected to each other; the width of the first inner frame (13) is smaller than the width of the second inner frame (14); the first inner frame (13) faces the optical fiber cable (2); and the second inner frame (14) faces the first pair of plugs (3) and the second pair of plugs (4).

4. A polarity-changeable joint boot connector as claimed in claim 3, characterized in that One end of the second inner frame (14) facing the first pair of plugs (3) and the second pair of plugs (4) is provided with a first mounting opening (141) and a second mounting opening (142) arranged side by side, the bottom and side portions of the first mounting opening (141) and the second mounting opening (142) are both provided with mounting grooves (143), and a U-shaped stop (144) is provided in the center of the second inner frame (14).

5. A polarity-changeable joint boot connector as claimed in claim 3, characterized in that The unlocking tail sleeve (6) comprises an unlocking frame (61) and a tail sleeve (62) buckled with the unlocking frame (61); first buckling windows (611) buckled with the first buckling position (111) and a notch (612) avoiding the gear position (122) are provided on both sides of the unlocking frame (61); the tail sleeve (62) of the unlocking tail sleeve (6) is sleeved on the outside of the optical fiber cable (2); the unlocking frame (61) is provided with a buckling wall (614) extending to the upper side of the outer frame sleeve (6); the spring buckle (63) is provided at one end of the buckling wall (614) facing the outside; the spring buckle (63) ) and the tops of the inner frame sleeve (1) and the outer frame sleeve (5), a second empty space (55) is provided between the bottom of the inner frame sleeve (1) and the top of the outer frame sleeve (5), the spring-pressing buckle (63) is arranged at the bottom of the buckling wall (614) and two are provided, a positioning groove (6142) is provided between the two spring-pressing buckles (63), a positioning notch groove (6143) is provided at the bottom of the positioning groove (6142), the spring-pressing buckle (63) and the positioning groove (6142) are arranged within the second empty space (55), and a third empty space (615) is provided between one end of the first buckle window (611) facing the spring-pressing buckle (63) and the first buckle position (111).

6. A polarity-changeable joint boot connector as claimed in claim 5, characterized in that The outer frame sleeve (5) comprises an outer frame body (52) sleeved on the outside of the inner frame sleeve (1), a first outer frame head (53) fixedly connected to the outer frame body (52) and sleeved on the outside of the first pair of plugs (3), and a second outer frame head (54) fixedly connected to the outer frame body (52) and sleeved on the outside of the second pair of plugs (4), the outer frame body (52) being provided with a second buckle window (521) buckled with a second buckle position (121), and an end of the outer frame body (52) facing the second buckle window (521) being limited to a space ( 123), the top of the outer frame body (52) is provided with a positioning column (525) which is aligned with the positioning notch groove (6143), and a positioning ridge (526) which is fixedly connected to the positioning column (525) and meshed with the positioning groove (6142), and the elastic sheet (51) includes a first elastic sheet (531) which is arranged on the top of the first outer frame head (53), and a second elastic sheet (541) which is arranged on the top of the second outer frame head (54), and the first elastic sheet (531) and the second elastic sheet (541) have the same structure.

7. A polarity-changeable joint boot connector as claimed in claim 6, characterized in that A portion of the top of the first spring sheet (531) away from the outer frame body (52) is fixedly connected to a spring-pressing arc arm (5311) facing the outer frame body (52); a portion of the spring-pressing arc arm (5311) is arranged in the second empty space (55); the spring-pressing arc arm (5311) extends over the top of the outer frame body (52) and the inner frame sleeve (1); the spring-pressing arc arm (5311) is arched upward; a buckle hole (53111) is provided at the top of the spring-pressing arc arm (5311); the spring-pressing buckle (63) is buckled with the buckle hole (53111); the top of the spring-pressing arc arm (5311) abuts against the buckling wall (614); and a connecting chamfer (53112) connecting the buckle hole (53111) and the top of the spring-pressing arc arm (53111) is provided at one end of the buckle hole (53111) facing the tail sleeve (62).

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