Outdoor cable terminal joint

Abstract

The utility model relates to cable terminal joint technical field, concretely is outdoor cable terminal joint, the utility model discloses cold shrink sheath, spiral strip and support mechanism, the spiral strip sets up in the inside of cold shrink sheath, the cold shrink sheath sets up in the inside of support mechanism, the support mechanism is at least set two groups, and the adjacent support mechanism is connected with support rod between, the support mechanism includes outer ring and locking sleeve, the locking sleeve is located between cold shrink sheath and outer ring, the locking sleeve is used for extruding outside cold shrink sheath, the one end middle part of locking sleeve is equipped with rectangular slot, and the both sides of the other end are all equipped with side groove, through the linkage of at least two groups of support mechanism and support rod, the outside support of cable is lifted, promotes the overall mechanical strength of cable, prevents the loosening caused by the bending of wiring place and easily occurs, and the locking sleeve is tightened cold shrink sheath through the rotation subassembly drive, increases the contraction resistance between cold shrink sheath and cable, to prevent the contraction of cold shrink sheath and shorten.

Description

Technical Field

[0001] This utility model relates to the field of cable terminal joints, specifically outdoor cable terminal joints. Background Technology

[0002] Outdoor cable terminations are critical components in power systems, used to protect cable ends and provide reliable electrical connections and mechanical seals.

[0003] Existing outdoor cable termination joints typically consist of an outer cold-shrink sheath and an inner spiral strip. The cable end is inserted into the joint, and then the end of the spiral strip is pulled out, causing the cold-shrink sheath to retract outside the cable without the spiral strip support.

[0004] However, existing outdoor cable termination joints rely on the shrinkage of the cold-shrink sheath to achieve a sealing effect. This is prone to excessive shrinkage due to temperature changes, resulting in a shorter cold-shrink sheath and a poorer sealing effect. Furthermore, the cold-shrink sheath cannot support the cable. After installation, the cable joint is prone to bending and twisting at the connection point, leading to loosening and affecting the electrical and sealing performance of the connection. Therefore, an outdoor cable termination joint is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an outdoor cable terminal connector to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An outdoor cable termination joint includes a cold-shrink sheath, a spiral strip, and a support mechanism. The spiral strip is disposed inside the cold-shrink sheath, and the cold-shrink sheath is disposed inside the support mechanism.

[0008] The support mechanism is provided in at least two sets, and a support rod is connected between adjacent support mechanisms. The support mechanism includes an outer ring and a locking sleeve. The locking sleeve is located between the cold shrink sleeve and the outer ring. The locking sleeve is used to compress the outside of the cold shrink sleeve.

[0009] The locking sleeve has a rectangular groove in the middle of one end and side grooves on both sides of the other end. The end of the locking sleeve with the side groove passes through the rectangular groove.

[0010] The outer ring has a slot, and both ends of the locking sleeve pass through the slot. The outer ring is provided with two sets of rotating components, which mesh with the ends of the locking sleeve for transmission.

[0011] Preferably, both ends of the locking sleeve are fixedly connected with teeth, and the rotating component includes a fixed seat, which is fixedly connected to the outer ring sidewall. A gear is rotatably mounted on the fixed seat, and a knob is fixedly connected to one end of the gear. The gear meshes with the teeth for transmission.

[0012] Preferably, a slot is provided in the middle of the knob, a slide rod is slidably installed on one side of the outer ring, a connecting plate is fixedly connected to the end of the slide rod, and a plug is fixedly connected to the end of the connecting plate. The plug is inserted into the slot.

[0013] Preferably, the outer ring sidewall is provided with a sliding groove, one end of the sliding rod slides in the sliding groove, a spring is fixedly connected inside the sliding groove, the end of the spring is fixedly connected to the sliding rod, and the spring is in a stretched state.

[0014] Preferably, the outer ring sidewall is threaded with multiple sets of screws, one end of each set of screws is fixedly connected to a pressure plate for pressing the locking sleeve, and the other end of each screw is fixedly connected to a knob.

[0015] Preferably, the outer ring sidewall is fixed with multiple sets of fixing seats II, both ends of the support rod are threaded with thread I, the end of the support rod is inserted into the fixing seat II, and multiple sets of nuts that fit with thread I are threaded on the sidewall of the support rod, and the nuts are in close contact with the sidewall of the fixing seat II.

[0016] The beneficial effects of this utility model are:

[0017] This utility model forms a distributed force network through the linkage of at least two sets of support mechanisms and support rods, which provides external support for the cable, improves the overall mechanical strength of the cable, prevents the connection points from easily bending and loosening, and drives the locking sleeve to tighten the cold shrink sheath, increasing the shrinkage resistance between the cold shrink sheath and the cable, thereby preventing the cold shrink sheath from shrinking and shortening. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the support mechanism structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the outer ring structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the locking sleeve structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the outer ring cross-sectional structure of this utility model;

[0024] The attached figures are labeled as follows:

[0025] 1. Spiral strip; 2. Cold shrink sleeve; 3. Locking sleeve; 4. Rectangular groove; 5. Side groove; 6. Tooth; 7. Fixing base one; 8. Gear; 9. Knob one; 10. Slot; 11. Slide groove; 12. Spring; 13. Slide rod; 14. Connecting plate; 15. Insert block; 16. Pressure plate; 17. Screw; 18. Knob two; 19. Fixing base two; 20. Support rod; 21. Nut; 22. Outer ring; 23. Groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Outdoor cable termination connectors, such as Figures 1-5 As shown, the device includes a cold shrink sheath 2, a spiral strip 1, and a support mechanism. The spiral strip 1 is disposed inside the cold shrink sheath 2, and the cold shrink sheath 2 is disposed inside the support mechanism. The cold shrink sheath 2 and the spiral strip 1 are existing technologies. The spiral strip 1 pre-supports the cold shrink sheath 2. When the cable end is inserted into the spiral strip 1, both the cold shrink sheath 2 and the support mechanism are fitted outside the cable. When the spiral strip 1 is pulled out, the cold shrink sheath 2 shrinks and is fitted onto the surface of the cable.

[0028] At least two sets of support mechanisms are provided, and support rods 20 are connected between adjacent support mechanisms. The support rods 20 connect multiple sets of support mechanisms. Because the support rods 20 have a certain degree of rigidity, the cable cannot be bent in this area. Therefore, the support mechanisms and support rods 20 are combined to form a distributed force network to support the cable externally, improve the overall mechanical strength of the cable, and prevent the connection points from easily bending and twisting, which could cause loosening.

[0029] The support mechanism includes an outer ring 22 and a locking sleeve 3. The locking sleeve 3 is located between the cold shrink sleeve 2 and the outer ring 22, and the locking sleeve 3 is used to squeeze the outside of the cold shrink sleeve 2.

[0030] The locking sleeve 3 is made of stainless steel with a thickness of 1-1.5 mm. Like existing metal clamps, it has a certain rigidity but can be bent and stretched.

[0031] The locking sleeve 3 has a rectangular groove 4 in the middle of one end and side grooves 5 on both sides of the other end. The end of the locking sleeve 3 with the side grooves 5 passes through the rectangular groove 4.

[0032] One end of the locking sleeve 3 is provided with a rectangular groove 4, and the other end is narrower. The width of the rectangular groove 4 is slightly smaller than the width of the end of the locking sleeve 3 away from the rectangular groove 4. The narrower end is inserted into the rectangular groove 4, so that the two ends of the locking sleeve 3 cross each other. Pulling the two ends of the locking sleeve 3 can lock the area formed in the middle of the locking sleeve 3.

[0033] The outer ring 22 has a slot 23, and both ends of the locking sleeve 3 pass through the slot 23. The outer ring 22 is provided with two sets of rotating components, which mesh with the ends of the locking sleeve 3 for transmission.

[0034] Both ends of the locking sleeve 3 that cross each other pass through the slot 23 and are inserted between the outer wall of the outer ring 22 and the rotating component. When the cold shrink sheath 2 shrinks and tightly fits the cable surface, the gap between the cold shrink sheath 2 and the locking sleeve 3 becomes larger. At this time, the rotating component is driven, which causes the length of the locking sleeve 3 passing through the slot 23 at both ends to increase. The locking sleeve 3 squeezes the outside of the cold shrink sheath 2, increasing the shrinkage resistance between the cold shrink sheath 2 and the cable, thereby preventing the cold shrink sheath 2 from shrinking and becoming shorter.

[0035] The teeth 6 mesh with the gear 8. The sides of the locking sleeve 3 without teeth 6 are in close contact with the outer wall of the outer ring 22. At the same time, the width of the slot 23 is the same as the width of the locking sleeve 3. Since the locking sleeve 3 has a certain rigidity, it cannot deform and slide within the slot 23. Therefore, the locking sleeve 3 cannot be offset relative to the gear 8. It can only slide through the end of the locking sleeve 3 by the rotation of the gear 8. At the same time, the locking sleeve 3 is arc-shaped at the position where it passes through the slot 23, and the part that fits against the outer ring 22 is straight or slightly curved. Therefore, there will be no situation where the teeth 6 at the end of the gear 8 and the locking sleeve 3 cannot mesh. The gear 8 and the teeth 6 are always meshed.

[0036] Teeth 6 are provided at both ends of the locking sleeve 3. When the locking assembly is retracted, the knob 9 is turned to drive the gear 8 to rotate. The two ends of the locking sleeve 3 are located between the gear 8 and the outer ring 22 and cannot be dislodged. The rotation of the gear 8 will mesh with the end of the locking sleeve 3, making the length of the end of the locking sleeve 3 through the slot 23 longer, thereby making the area inside the locking sleeve 3 smaller and squeezing the outside of the cold shrink sleeve 2. By turning the knob 9 in the opposite direction, the locking sleeve 3 can release the squeezing of the cold shrink sleeve 2.

[0037] To prevent the knob 9 from causing the gear 8 to rotate, a slide rod 13, a connecting plate 14, and a plug 15 are slidably installed on the outer ring 22. Both the plug 15 and the slot 10 are regular polygonal structures, and they are plugged into each other.

[0038] Before knob 9 is turned, pull connecting plate 14 to disengage insert 15 from slot 10. Slide rod 13 slides in slide groove 11, which makes the stretch of spring 12 more severe (spring 12 is always in a stretched state). After knob 9 is turned, release connecting plate 14. Spring 12 pulls slide rod 13 and drives insert 15 to slot 10 through connecting plate 14. (Since insert 15 and slot 10 are regular polygons with many sides and the surface of cold shrink sleeve 2 has a certain elasticity, when insert 15 and slot 10 cannot be inserted directly, knob 9 can be turned slightly in the opposite direction. This will not affect the tightness of the compression between locking sleeve 3 and cold shrink sleeve 2, but it can make insert 15 smoothly inserted into slot 10.) Insert 15 cannot rotate relative to knob 9. Therefore, the angle between knob 9 and gear 8 is fixed, thereby fixing both ends of locking sleeve 3 and preventing locking sleeve 3 from loosening on its own.

[0039] After the locking sleeve 3 is tightened, turn the knob 18 to make the pressure plate 16 gradually approach and squeeze the locking sleeve 3, which supports the locking sleeve 3 and the outer ring 22, prevents the locking sleeve 3 from shifting between the outer ring 22, and also strengthens the locking sleeve 3, which can further increase the degree of compression of the cold shrink sleeve 2 by the locking sleeve 3.

[0040] Based on the length of the outdoor cable, the number of support mechanisms to be used and the length of the support rod 20 are planned. After multiple sets of support mechanisms are installed, the support rod 20 is inserted. During the insertion process, a certain number of nuts 21 are installed. The support rod 20 is slid so that the support rod 20 connects multiple sets of support mechanisms. The second fixing seat 19 is located in the middle of the first thread. Then, the nuts 21 are rotated so that every two sets of nuts 21 are tightly attached to the second fixing seat 19, so that the support rod 20 cannot slide between multiple sets of support mechanisms, thereby positioning the support rod 20.

[0041] The working principle of the outdoor cable terminal connector provided by this utility model is as follows:

[0042] Insert the outdoor cable head into the spiral strip 1, move it to the preset position, and then pull out the spiral strip 1. The cold shrink sheath 2 shrinks onto the cable surface. Then drive the rotating component to rotate, pull the two ends of the locking sleeve 3, so that the locking sleeve 3 presses tightly against the outside of the cold shrink sheath 2, increasing the shrinkage resistance between the cold shrink sheath 2 and the cable, thereby preventing the cold shrink sheath 2 from shrinking and shortening. Then, insert the support rod 20 into the fixing seat 2 19, and tighten the nut 21 to fix the support rod 20. Thus, multiple sets of support mechanisms and support rods 20 cooperate to support the outdoor cable. This outdoor cable terminal joint provides external support to the cable, improves the overall mechanical strength of the cable, prevents bending at the connection point from causing loosening, and increases the shrinkage resistance between the cold shrink sheath 2 and the cable, thereby preventing the cold shrink sheath 2 from shrinking and shortening.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An outdoor cable termination connector, characterized in that, It includes a cold shrink sleeve (2), a spiral strip (1) and a support mechanism, wherein the spiral strip (1) is disposed inside the cold shrink sleeve (2) and the cold shrink sleeve (2) is disposed inside the support mechanism; At least two sets of support mechanisms are provided, and support rods (20) are connected between adjacent support mechanisms. Each support mechanism includes an outer ring (22) and a locking sleeve (3). The locking sleeve (3) is located between the cold shrink sleeve (2) and the outer ring (22). The locking sleeve (3) is used to squeeze the outside of the cold shrink sleeve (2). The locking sleeve (3) has a rectangular groove (4) in the middle of one end and side grooves (5) on both sides of the other end. The end of the locking sleeve (3) with the side groove (5) passes through the rectangular groove (4). The outer ring (22) has a slot (23) and both ends of the locking sleeve (3) pass through the slot (23). The outer ring (22) is provided with two sets of rotating components, which mesh with the ends of the locking sleeve (3) for transmission.

2. The outdoor cable termination connector according to claim 1, characterized in that, Both ends of the locking sleeve (3) are fixedly connected with teeth (6). The rotating component includes a fixed seat (7), which is fixedly connected to the side wall of the outer ring (22). A gear (8) is rotatably mounted on the fixed seat (7). A knob (9) is fixedly connected to one end of the gear (8). The gear (8) meshes with the teeth (6) for transmission.

3. The outdoor cable termination connector according to claim 2, characterized in that, A slot (10) is provided in the middle of the knob (9), and a slide rod (13) is slidably installed on one side of the outer ring (22). A connecting plate (14) is fixed to the end of the slide rod (13), and a plug (15) is fixed to the end of the connecting plate (14). The plug (15) is inserted into the slot (10).

4. The outdoor cable termination connector according to claim 3, characterized in that, The outer ring (22) has a groove (11) on its side wall. One end of the slide rod (13) slides in the groove (11). A spring (12) is fixed inside the groove (11). The end of the spring (12) is fixed to the slide rod (13) and the spring (12) is in a stretched state.

5. The outdoor cable termination connector according to claim 1, characterized in that, The outer ring (22) has multiple sets of screws (17) threaded on its side wall. One end of each set of screws (17) is fixedly connected to a pressure plate (16) for pressing the locking sleeve (3), and the other end of each screw (17) is fixedly connected to a knob (18).

6. The outdoor cable termination connector according to claim 1, characterized in that, The outer ring (22) has multiple sets of fixed seats (19) fixed to its side wall. Both ends of the support rod (20) are threaded. The end of the support rod (20) is inserted into the fixed seat (19). Multiple sets of nuts (21) that fit with the thread are threaded on the side wall of the support rod (20). The nuts (21) are in close contact with the side wall of the fixed seat (19).

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