Cable joint kit

Abstract

The invention relates to the technical field of cable joints, in particular to a cable joint suite which comprises a joint suite unit used for butt joint and fixation between two cable sections, and the joint suite unit comprises a first joint, a second joint and a fixing ring which are rotationally combined for use. A protection ring used for being pressed into an armor layer on one side of the cable section is arranged outside the first connector, and a locking nut is arranged at the end, away from the second connector, of the fixing ring. An adjusting mechanism; and a winding mechanism. Through the arranged adjusting mechanism, the cable can smoothly pass through a bending area under the condition that the cable is not damaged, angle adjustment and excessive rotation prevention are carried out on the two butted cable sections, and it is ensured that a connector can be effectively connected in the expected direction; and through the arranged winding mechanism, a protection layer can be wound in the locking and limiting process after the two cable sections are butted, so that the stability of the joint is improved, and the cables are prevented from falling off or being in poor contact at the joint.

Description

Technical Field

[0001] The present invention relates to the technical field of cable joints, and particularly to a cable joint kit. Background Art

[0002] Cable connection is a crucial part of an electrical system, and cables need to be connected to multiple cable segments through joints. In practical applications, cables often need to be connected between different devices or structures, especially when they need to turn or pass through curved areas, the treatment of cable connections is particularly important.

[0003] Currently, cables often need to pass through curved areas during connection, and there are often large stress concentrations in these areas. In curved areas, the conductors and insulation layers inside the cables are easily physically damaged, thus affecting the normal operation of the cables. Especially at the joints, excessive rotation or improper angle change of the cables will exacerbate the wear and damage of the cables, resulting in loose connections or electrical failures.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The object of the present invention is to solve the above deficiencies and provide a cable joint kit.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: A cable joint kit, including a joint kit unit for docking and fixing between two cable segments. The joint kit unit includes a first joint, a second joint, and a fixing ring that are used in combination by rotation. A protective ring for pressing into the armor layer on one side of the cable segment is arranged outside the first joint, and a locking nut is arranged at one end of the fixing ring away from the second joint;

[0007] An adjusting mechanism, including an elbow part rotatably arranged at the outer end of the locking nut and a limiting component arranged inside the elbow part and used for restricting the rotation angle of the elbow part;

[0008] A winding mechanism is arranged inside the fixing ring and is used for winding a protective layer around the connection part of the two cable segments during the rotation of the fixing ring.

[0009] Further, the limiting component includes a support ring rotatably arranged at one inner end of the elbow part, a first internal gear ring rotatably arranged on one side of the support ring, and a first gear meshingly connected to the first internal gear ring is arranged at one place on the support ring;

[0010] Rotate the elbow part to adjust its angle, and limit the excessive rotation of the elbow part through the engagement between the first internal gear ring and the first gear.

[0011] Further, the winding mechanism includes a moving ring and an L-shaped support ring oppositely arranged inside the fixed ring. A material roller for winding the protective layer is arranged on one side of the connection of the corresponding two cable segments on the moving ring. An activity-fitted lead screw and a second guide rod are respectively arranged up and down between the moving ring and the L-shaped support ring.

[0012] Further, one end of the lead screw is provided with a second gear. A second internal gear ring fixed to the inner wall of the fixed ring is arranged outside the second gear. An external gear ring coaxially distributed with the second internal gear ring is arranged inside the second gear. The external gear ring is arranged inside the L-shaped support ring and is oppositely arranged with the second internal gear ring. Several guide wheels rotatably arranged on the inner wall of the fixed ring are arranged at the outer end of the L-shaped support ring.

[0013] Further, several first guide rods for horizontally moving on the inner peripheral surface of the elbow part are arranged along the circumference on the first internal gear ring. A circular ring is rotatably arranged on the side of the support ring away from the first internal gear ring. Several springs connected to the lock nuts are evenly arranged on the circular ring.

[0014] Further, a spiral guide block is arranged on the elbow part. Several auxiliary heat dissipation units arranged in a circumferential array along the outer wall of the elbow part are arranged on the part of the spiral guide block outside the elbow part. The auxiliary heat dissipation unit includes a heat dissipation flow channel formed by enclosing a first long side plate, a second long side plate, a first short side plate, and a second short side plate.

[0015] The first long side plate and the second long side plate are oppositely distributed and the two ends away from the center of the elbow part are close to each other and an opening is left. The first short side plate and the second short side plate are oppositely distributed and the two ends close to the center of the elbow part are fixed.

[0016] Further, two third gears are symmetrically arranged at the position where the first joint is connected to the second joint. A first rack is vertically engaged on one side of the third gear. An inclined surface adapted to the top of the first rack is arranged at one end of the fixed ring corresponding to the second joint. A second rack for synchronously vertical movement is arranged on the other side of the third gear. A jack for the second rack to pass through is correspondingly arranged inside the second joint.

[0017] Further, a first internal thread part and a first external thread part are respectively arranged inside and outside the second joint. The rotation directions of the first internal thread part and the first external thread part are opposite. A second external thread part adapted to the first internal thread part is arranged outside the fixed ring. A second internal thread part adapted to the first external thread part is arranged inside the protective ring.

[0018] Further, a nylon ring is arranged on the inner side of one end of the locking nut away from the elbow part.

[0019] Compared with the prior art, the present invention has the following beneficial effects: through the provided adjusting mechanism, the present invention can ensure that the cable can smoothly pass through the bending area without being damaged and adjust the angle of two butt - jointed cable segments and prevent excessive rotation, so as to ensure that the joint can be effectively connected in the expected direction; also through the provided winding mechanism, a protective layer can be wound during the locking and limiting process after the two cable segments are butt - jointed to increase the stability of the joint and prevent the cable from falling off or having poor contact at the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 is a three - dimensional structure diagram of an overall installation on a cable segment from one perspective according to an embodiment of the present invention;

[0022] Figure 2 is a front - view sectional plane structure schematic diagram of the overall according to an embodiment of the present invention;

[0023] Figure 3 is Figure 2 a magnified structure schematic diagram at A in

[0024] Figure 4 is a three - dimensional structure diagram of an overall disassembly from one perspective according to an embodiment of the present invention;

[0025] Figure 5 is a three - dimensional structure diagram of a combination of a first joint, a second joint, and a fixing ring according to an embodiment of the present invention from one perspective;

[0026] Figure 6 is a three - dimensional structure diagram of a combination of a first joint, a second joint, and a fixing ring according to an embodiment of the present invention from another perspective;

[0027] Figure 7 is a three - dimensional structure diagram of a cross - section of an adjusting component according to an embodiment of the present invention from one perspective;

[0028] Figure 8 is Figure 7 a magnified structure schematic diagram at B in

[0029] Figure 9 is a magnified structure schematic diagram of a heat - dissipation structure installed on the wall surface of the elbow part according to an embodiment of the present invention.

[0030] In the figure: 100, cable section; 200, joint kit unit; 1, first joint; 2, second joint; 3, fixing ring; 31, inclined surface; 4, protective ring; 5, locking nut; 51, nylon ring; 6, adjusting mechanism; 61, elbow section; 611, spiral guide block; 612, auxiliary heat dissipation unit; 6121, first long side plate; 6122, second long side plate; 6123, first short side plate; 6124, second short side plate; 62, first internal gear ring; 63, first guide rod; 64, first gear; 65, spring; 7, winding mechanism; 71, moving ring; 72, material roller; 73, L-shaped support ring; 74, lead screw; 75, second guide rod; 76, second gear; 77, second internal gear ring; 78, external gear ring; 79, guide wheel; 8, third gear; 81, first rack; 82, second rack; 821, jack. Detailed implementation manner

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figures 1-9 shown, the cable joint kit of the present invention includes a joint kit unit 200 for docking and fixing between two cable sections 100. The joint kit unit 200 includes a first joint 1, a second joint 2, and a fixing ring 3 that are used in combination by rotation. A protective ring 4 for pressing into the armor layer on one side of the cable section 100 is provided outside the first joint 1. A locking nut 5 is provided at one end of the fixing ring 3 away from the second joint 2;

[0033] The adjusting mechanism 6 includes an elbow section 61 rotatably provided at the outer end of the locking nut 5 and a limiting component provided inside the elbow section 61 for limiting the rotation angle of the elbow section 61;

[0034] The winding mechanism 7 is provided inside the fixing ring 3 and is used for winding a protective layer on the connection part of the two cable sections 100 during the rotation of the fixing ring 3.

[0035] In specific implementation, through the detachable and rotatable combination of the first joint 1, the second joint 2, and the fixing ring 3, first, the first joint 1 and the second joint 2 are sequentially sleeved on the outer sides of the ends connected to the cable section 100, and the combined first joint 1 and second joint 2 are docked and combined. Then, the fixing ring 3 is sleeved from the end connected to the cable section 100 and screwed with the second joint 2, so that the first joint 1, the second joint 2, and the fixing ring 3 form a joint kit unit 200 for externally protecting the connection of the two cable sections 100;

[0036] Also, through the winding mechanism 7 installed in the fixing ring 3, a protective layer can be wound around the connection section of the two cables synchronously during the locking and limiting process of the fixing ring 3 after the two cable sections 100 are docked, so as to increase the stability of the joint and prevent the cable from falling off or having poor contact at the joint;

[0037] The lock nut 5 used for locking and restricting the joint kit unit 200 composed of the first joint 1, the second joint 2, and the fixing ring 3, the elbow part 61 rotatably installed with a groove at one end away from the fixing ring 3 and the limiting component for restricting the rotation angle of the elbow part 61 can ensure that the cable passes through the bending area smoothly without being damaged and adjust the angle of the two docked cable sections 100 and prevent excessive rotation, so as to ensure that the joint can be effectively connected in the expected direction.

[0038] It should be noted that the elbow part 61 is made of hard pipe material.

[0039] It should be noted that the protective ring 4 installed outside the first joint 1 can press the armor layer on one side of the cable section 100 between the first joint 1 and the protective ring 4.

[0040] It should be noted that the design of the elbow part 61 can protect the cable from being damaged when passing through the bending area and provide an appropriate channel for the cable to pass through smoothly.

[0041] In an embodiment, the limiting component includes a support ring rotatably arranged at one end inside the elbow part 61, a first internal gear ring 62 rotatably arranged on one surface of the support ring, and a first gear 64 meshed and connected with the first internal gear ring 62 arranged at one place on the support ring;

[0042] Rotate the elbow part 61 to adjust its angle, and limit the excessive rotation of the elbow part 61 through the engagement between the first internal gear ring 62 and the first gear 64. With such a design, a support ring is rotatably installed in a groove near the locking nut 5 inside the elbow part 61, a first internal gear ring 62 is rotatably installed in a groove on one side of the support ring, and a first gear 64 that engages with the internal teeth of the first internal gear ring 62. The first gear 64 is rotatably installed on the support ring at a certain position through a central shaft. By rotating the elbow part 61 and using the rail groove structure at the connection between the locking nut 5 and the end of the elbow part 61, the angle can be rotationally adjusted. Under the engagement of the first internal gear ring 62 and the first gear 64, the excessive rotation of the elbow part 61 can be limited, realizing the rotational angle adjustment and anti-excessive rotation limitation of the elbow part 61.

[0043] In one embodiment, the winding mechanism 7 includes a moving ring 71 and an L-shaped support ring 73 that are oppositely arranged inside the fixed ring 3. A material roller 72 for winding the protective layer is arranged on one side of the moving ring 71 corresponding to the connection of the two cable segments 100. A lead screw 74 and a second guide rod 75 that are movably adapted are respectively arranged above and below between the moving ring 71 and the L-shaped support ring 73. With such a design, through the moving ring 71 and the L-shaped support ring 73 that are oppositely installed inside the fixed ring 3, and the material roller 72 for winding the protective layer installed on one side of the moving ring 71, by operating the lead screw 74 that is threadedly adapted and installed in a groove on the moving ring 71, the moving ring 71 installed thereon is driven to perform a linear motion under the limit and guidance of the second guide rod 75 that is slidably adapted and installed in a groove on the other side of the moving ring 71. During the process of winding the protective layer at the joint position where the two cable segments 100 are butted, a horizontal linear movement is performed to widen the width of the wound protective layer, and the winding operation will not be fixed at a single point.

[0044] It should be noted that the protective layer sleeved and installed on the material roller 72 includes, but is not limited to, insulating tape, a strong cable fixing band made of materials such as polyvinyl chloride (PVC), and a shielding band.

[0045] In one embodiment, a second gear 76 is provided at one end of the lead screw 74. A second internal gear ring 77 fixed to the inner wall of the fixed ring 3 is provided outside the second gear 76. An external gear ring 78 coaxially distributed with the second internal gear ring 77 is provided inside the second gear 76. The external gear ring 78 is arranged inside the L-shaped support ring 73 and is disposed opposite to the second internal gear ring 77. A plurality of guide wheels 79 rotatably arranged on the inner wall of the fixed ring 3 are provided at the outer end of the L-shaped support ring 73. With such a design, through the second gear 76 sleeved and installed at one end of the lead screw 74, and the second internal gear ring 77 and the external gear ring 78 which are meshed on the inner and outer sides of the second gear 76 and are coaxially distributed, during the process of tightening the fixed ring 3, the second internal gear ring 77 welded inside the fixed ring 3 will be driven to rotate, so that the second gear 76 meshed inside the second internal gear ring 77 transmits the acting force to drive the lead screw 74 passing through the end face of the second gear 76 to rotate, and then drives the moving ring 71 to approach or move away from the L-shaped support ring 73. At the same time, the acting force is transmitted through the second gear 76 to drive the external gear ring 78 meshed on the second gear 76 to rotate, and then drives the overall structure composed of the moving ring 71 and the L-shaped support ring 73 to rotate, so that the protective layer wound on a material roller 72 installed on the moving ring 71 is gradually released, thereby realizing the winding of the protective layer at the joint position between the two cable segments 100.

[0046] It should be noted that a plurality of guide wheels 79 uniformly installed on the inner wall of the fixed ring 3 can assist in guiding the rotation of the L-shaped support ring 73, limit the rotation range, and prevent deviation during the rotation process.

[0047] In one embodiment, a plurality of first guide rods 63 for transverse movement on the inner peripheral surface of the elbow part 61 are circumferentially arranged on the first internal gear ring 62. A circular ring is rotatably arranged on the surface of the support ring away from the first internal gear ring 62. A plurality of springs 65 connected to the locking nut 5 are uniformly arranged on the circular ring. With such a design, through the first guide rods 63 slidably installed relatively in a plurality of holes machined by turning on the first internal gear ring 62 along the circumferential direction, and the circular ring installed by grooving on one surface of the support ring and the plurality of springs 65 installed on the surface of the circular ring close to the locking nut 5, when the locking nut 5 is used to lock the combined joint kit unit 200, since the fixed ring 3 can pass through the wall surface of the housing for fixing the cable, the installation position of the locking nut 5 is uncertain. At this time, the first guide rods 63 and the springs 65 can not interfere with the adjustment and fixing limit of the rotation angle of the elbow part 61 on the end face of the locking nut 5.

[0048] In one embodiment, a spiral guide block 611 is provided on the elbow portion 61. A plurality of auxiliary heat dissipation units 612 are arranged on the outer side portion of the spiral guide block 611 placed on the elbow portion 61 in a circumferential array along the outer wall of the elbow portion 61. The auxiliary heat dissipation unit 612 includes a heat dissipation flow channel formed by enclosing a first long side plate 6121, a second long side plate 6122, a first short side plate 6123, and a second short side plate 6124.

[0049] The first long side plate 6121 and the second long side plate 6122 are oppositely distributed and the two ends away from the center of the elbow portion 61 are close to each other and an opening is left. The first short side plate 6123 and the second short side plate 6124 are oppositely distributed and the two ends close to the center of the elbow portion 61 are fixed. With such a design, the spiral guide block 611 is welded and fixed by grooving along the path of the spiral guide block 611 on the elbow portion 61. A hollow groove is machined and left on the inner side portion of the spiral guide block 611 placed on the elbow portion 61, effectively increasing the heat dissipation area of the pipe wall of the elbow portion 61 in contact with the external air. A plurality of auxiliary heat dissipation units 612 are also installed on the outside of the spiral guide block 611 protruding from the elbow portion 61. Each auxiliary heat dissipation unit 612 is formed by enclosing the first long side plate 6121, the second long side plate 6122, the first short side plate 6123, and the second short side plate 6124, which can separate the structure of the spiral guide block 611 protruding from the outside of the elbow portion 61, enabling the air to take away the heat generated during the operation of the cable joint through the heat dissipation flow channel, and enabling long-term and continuous heat dissipation, optimizing the conduction of heat.

[0050] In one embodiment, two third gears 8 are symmetrically arranged at the position where the first joint 1 is connected to the second joint 2. A first rack 81 is vertically engaged with one side of the third gear 8. An inclined surface 31 adapted to the top of the first rack 81 is provided at one end of the fixed ring 3 corresponding to the second joint 2. A second rack 82 for synchronous vertical movement is provided on the other side of the third gear 8. A jack 821 for the second rack 82 to pass through is correspondingly provided inside the second joint 2. With such a design, through the third gear 8 installed on the first joint 1 and the first rack 81 and the second rack 82 respectively engaged on both sides of the third gear 8, when the fixed ring 3 is screwed inwards, the inclined surface 31 machined on the inner side of the fixed ring 3 will push towards the top of the first rack 81. Since the end surface in contact between the inclined surface 31 and the top of the first rack 81 is a wedging structure, it will drive the first rack 81 to move downwards and at the same time drive the second rack 82 to move upwards to the jack 821 machined and penetrated through the second joint 2 through the engaged third gear 8, so that the first joint 1 and the second joint 2 are radially locked.

[0051] It should be noted that an elastic member is correspondingly installed at the bottom of the first rack 81, which can automatically reset.

[0052] In one embodiment, a first internal thread portion and a first external thread portion are respectively provided on the inner side and the outer side of the second joint 2. The rotation directions of the first internal thread portion and the first external thread portion are opposite. A second external thread portion adapted to the first internal thread portion is provided on the outer side of the fixing ring 3, and a second internal thread portion adapted to the first external thread portion is provided on the inner side of the protective ring 4. With such a design, by the first internal thread portion and the first external thread portion machined by turning on the inner side and the outer side of the second joint 2 respectively, the fixing ring 3 and the protective ring 4 can be sequentially screwed and combined on the second joint 2. Among them, since the rotation directions of the first internal thread portion and the first external thread portion are opposite, after screwing and fixing, the directions of the external rotation force and the internal rotation force will be opposite, which helps to prevent the threaded connection structure from loosening due to vibration or other external forces during operation.

[0053] In one embodiment, a nylon ring 51 is provided on the inner side of one end of the locking nut 5 away from the elbow portion 61. With such a design, by embedding and installing the nylon ring 51 on the inner side of one end of the locking nut 5 away from the elbow portion 61, the damping friction force of the screw fixation can be increased, effectively avoiding the loosening of the locking nut 5 caused by vibration or impact, and improving the connection stability.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0055] It should be noted that if there are directional indications involved in the embodiments of the present invention, such as up, down, left, right, front, back..., then the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time. In addition, "several" means more than two. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. Cable joint kit, including a joint kit unit (200) for docking and fixing between two cable segments (100), characterized in that: The joint kit unit (200) includes a first joint (1), a second joint (2), and a fixing ring (3) that are used in a rotating combination. A protective ring (4) for pressing into the armor layer on one side of the cable segment (100) is provided on the outside of the first joint (1). A locking nut (5) is provided at one end of the fixing ring (3) away from the second joint (2). An adjusting mechanism (6) includes an elbow portion (61) rotatably provided at the outer end of the locking nut (5) and a limiting component provided inside the elbow portion (61) for limiting the rotation angle of the elbow portion (61). A winding mechanism (7) is provided inside the fixing ring (3) for winding a protective layer around the connection of the two cable segments (100) during the rotation of the fixing ring (3).

2. The cable joint kit according to claim 1, characterized in that: The limiting component includes a support ring rotatably provided at one end inside the elbow portion (61), and a first internal gear ring (62) rotatably provided on one surface of the support ring. A first gear (64) meshingly connected to the first internal gear ring (62) is provided at a position on the support ring. Rotate the elbow portion (61) to adjust its angle, and limit the excessive rotation of the elbow portion (61) through the engagement between the first internal gear ring (62) and the first gear (64).

3. The cable joint kit according to claim 1, wherein: The winding mechanism (7) includes a moving ring (71) and an L-shaped support ring (73) oppositely provided inside the fixing ring (3). A material roller (72) for winding the protective layer is provided on one surface of the moving ring (71) corresponding to the connection of the two cable segments (100). A lead screw (74) and a second guide rod (75) that are movably adapted are respectively provided above and below between the moving ring (71) and the L-shaped support ring (73).

4. The cable joint kit according to claim 3, characterized in that: One end of the lead screw (74) is provided with a second gear (76). A second internal gear ring (77) fixed to the inner wall of the fixing ring (3) is provided outside the second gear (76). An external gear ring (78) coaxially distributed with the second internal gear ring (77) is provided inside the second gear (76). The external gear ring (78) is provided inside the L-shaped support ring (73) and is oppositely provided to the second internal gear ring (77). A plurality of guide wheels (79) rotatably provided on the inner wall of the fixing ring (3) are provided at the outer end of the L-shaped support ring (73).

5. The cable joint kit according to claim 2, characterized in that: A plurality of first guide rods (63) for laterally moving on the inner circumferential surface of the elbow portion (61) are circumferentially provided on the first internal gear ring (62). A circular ring is rotatably provided on the surface of the support ring away from the first internal gear ring (62). A plurality of springs (65) connected to the locking nut (5) are evenly provided on the circular ring.

6. The cable joint kit according to claim 1, characterized in that: A spiral guide block (611) is provided on the bent pipe portion (61). A plurality of auxiliary heat dissipation units (612) are arranged in a circumferential array along the outer wall of the bent pipe portion (61) on the outer side portion of the spiral guide block (611). The auxiliary heat dissipation unit (612) includes a heat dissipation flow channel formed by enclosing a first long side plate (6121), a second long side plate (6122), a first short side plate (6123), and a second short side plate (6124). The first long side plate (6121) and the second long side plate (6122) are oppositely distributed, and the two ends away from the center of the bent pipe portion (61) are close to each other and an opening is left. The first short side plate (6123) and the second short side plate (6124) are oppositely distributed, and the two ends close to the center of the bent pipe portion (61) are fixed.

7. The cable joint kit according to claim 1, characterized in that: Two third gears (8) are symmetrically arranged at the position where the first joint (1) is connected to the second joint (2). A first rack (81) is vertically engaged on one side of the third gear (8). An inclined surface (31) adapted to the top of the first rack (81) is provided at one end of the fixed ring (3) corresponding to the second joint (2). A second rack (82) for synchronous vertical movement is provided on the other side of the third gear (8). A jack (821) for the second rack (82) to pass through is correspondingly provided on the inner side of the second joint (2).

8. The cable joint kit according to claim 1, characterized in that: A first internal thread portion and a first external thread portion are respectively provided on the inner side and the outer side of the second joint (2). The rotation directions of the first internal thread portion and the first external thread portion are opposite. A second external thread portion adapted to the first internal thread portion is provided on the outer side of the fixed ring (3). A second internal thread portion adapted to the first external thread portion is provided on the inner side of the protective ring (4).

9. The cable joint kit according to claim 1, characterized in that: A nylon ring (51) is provided on the inner side of one end of the locking nut (5) away from the bent pipe portion (61).

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