Cold contraction type cable accessory
By designing a cold-shrink cable accessory that includes a first sleeve, an inner sleeve, a second sleeve, a mounting ring, and a switch assembly, the problems of complex installation and difficult disassembly in the prior art are solved, enabling rapid installation and disassembly and improving connection stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-04-03
AI Technical Summary
Existing cold-shrink cable accessories are complicated and inefficient to install and remove, have insufficient connection stability, and are difficult to remove, which may lead to cable damage or safety hazards.
The design includes a first sleeve, an inner sleeve, a second sleeve, a mounting ring, and a switch assembly. Through the cooperation of the limiting structure and the release ring, it enables quick installation and disassembly, simplifies the operation steps, and improves connection stability.
It enables rapid installation and removal of cable accessories, reduces the need for specialized tools, improves installation efficiency, ensures connection stability, and avoids cable damage or safety hazards caused by difficult disassembly.
Smart Images
Figure CN224083176U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable accessory technology, and in particular to a cold-shrink cable accessory. Background Technology
[0002] In power systems, cold-shrink cable accessories are crucial components for connecting cables, and their ease of installation, sealing, and stability are vital for the safe operation of the power system. Traditional cold-shrink cable accessories often require complex procedures and specialized tools during installation, and the stability and sealing of the connection after installation are difficult to guarantee. This deficiency is particularly pronounced in applications requiring frequent disassembly and reinstallation, not only increasing installation difficulty but also potentially leading to safety hazards at cable connections.
[0003] In existing technologies, cold-shrink cable accessories often employ threaded or snap-fit connections. These methods require significant time and effort during installation and are prone to loose connections or poor sealing due to improper operation. Furthermore, disassembly is often difficult and can easily damage the cable or accessory itself, resulting in poor practicality. Therefore, this utility model discloses a cold-shrink cable accessory to solve the problems of complex operation, low efficiency, and connection stability in the installation and disassembly of existing cold-shrink cable accessories. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose a cold-shrink cable accessory to solve the problems of complex operation, low efficiency and connection stability in the installation and disassembly of existing cold-shrink cable accessories.
[0005] To achieve the above objectives, this utility model provides a cold-shrink cable accessory, comprising: a first sleeve, an inner sleeve installed inside the first sleeve, a cable installed inside the inner sleeve, a second sleeve installed at a corresponding position at one end of the first sleeve, and an inner sleeve installed inside the second sleeve, a first mounting ring and a second mounting ring respectively installed at opposite ends of the first sleeve and the second sleeve, a limiting ring installed on the inner sleeve inside the first sleeve near the second mounting ring, a limiting ring installed on the inner sleeve inside the second sleeve near the first mounting ring, a blocking ring installed on the inner wall of the second sleeve at the end closest to the first sleeve, and a blocking ring also installed on the inner wall of the first sleeve at the position closest to the second sleeve;
[0006] A switch assembly is disposed on the outer wall of the second sleeve and the second mounting ring, and the switch assembly is used to fix the first mounting ring and the second mounting ring together.
[0007] Preferably, a calibration guide rod is installed on one side wall of the first mounting ring near the second mounting ring. A pressure spring is sleeved on the calibration guide rod, and one end of the pressure spring is fixedly installed on the side wall of the first mounting ring. The original length of the pressure spring is shorter than the length of the calibration guide rod. A calibration hole is opened on the side wall of the second mounting ring at a corresponding horizontal height position. The diameter of the calibration hole is the same as the diameter of the calibration guide rod.
[0008] Preferably, the switch assembly includes a first concave mounting base, which is uniformly arranged in a circumferential array on the arc-shaped outer wall of the first mounting ring. Multiple sets of the first concave mounting bases are installed on the outer wall of the first mounting ring. A rotating rod is installed on the inner wall of the first concave mounting base, and a limiting plate is rotatably mounted on the rotating rod. A second concave mounting base is installed on the arc-shaped outer wall of the second mounting ring corresponding to the position of each set of the first concave mounting bases. A limiting inclined plate is installed at the bottom end of the inner wall of the second concave mounting base, and a release ring is installed at the end of the limiting plate away from the second mounting ring.
[0009] Preferably, a limiting hole is formed at the end of the limiting plate away from the second mounting ring, a limiting post is slidably installed in the limiting hole, and the other end of the limiting post is fixedly installed on the outer wall of the first mounting ring. A limiting spring is sleeved on the limiting post, one end of the limiting spring is installed on the bottom wall of the limiting plate, and the other end of the limiting spring is installed on the outer wall of the first mounting ring.
[0010] Preferably, a trapezoidal block is installed at the bottom of one end of the limiting plate near the second mounting ring, and the trapezoidal block fits into the limiting inclined plate.
[0011] Preferably, the limiting plate has a groove that fits the release ring at the position corresponding to the release ring, and a guide post is installed on the side wall of the release ring near the first mounting ring between each group of first concave mounting seats. The first mounting ring has a circular hole with the same diameter as the guide post at the position corresponding to each group of guide posts.
[0012] Preferably, the release ring is an open circular ring, with finger pinch blocks installed at both ends of the release ring. A horizontal guide rod is installed on the side wall of the finger pinch block, and a circular hole with the same diameter as the horizontal guide rod is opened on the finger pinch block at the position corresponding to the horizontal guide rod. A horizontal spring is sleeved on the horizontal guide rod, and both ends of the horizontal spring are installed on the side wall of the finger pinch block.
[0013] The beneficial effects of this utility model are:
[0014] Through the use of switching components and limiting structures, the cable accessory enables rapid installation and removal while ensuring the stability and quick disconnection of the connection. This accessory not only simplifies the installation process and reduces the need for specialized tools, but also improves installation efficiency, providing strong support for the safe operation of the power system. Furthermore, its unique release ring design makes the disassembly process more convenient, effectively avoiding cable damage or safety hazards caused by difficult disassembly. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in 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, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the overall cross-sectional planar structure of this utility model;
[0018] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;
[0020] Figure 5 This utility model Figure 1 Enlarged structural diagram at point C.
[0021] The diagram is marked as follows:
[0022] 1. First sleeve; 2. Second sleeve; 3. Inner sleeve; 4. Abutting ring; 5. First mounting ring; 6. First concave mounting seat; 7. Rotating rod; 8. Limiting plate; 9. Release ring; 10. Guide post; 11. Finger pinch block; 12. Horizontal guide rod; 13. Horizontal spring; 14. Limiting hole; 15. Limiting post; 16. Limiting spring; 17. Alignment guide rod; 18. Pressure spring; 19. Limiting ring; 20. Alignment hole; 21. Second concave mounting seat; 22. Limiting inclined plate; 23. Second mounting ring. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] This utility model provides, for example Figures 1 to 5 A cold-shrink cable accessory is shown, comprising: a first sleeve 1, an inner sleeve 3 installed inside the first sleeve 1, a cable installed inside the inner sleeve 3, a second sleeve 2 installed at a corresponding position at one end of the first sleeve 1, and an inner sleeve 3 installed inside the second sleeve 2; a first mounting ring 5 and a second mounting ring 23 respectively installed at opposite ends of the first sleeve 1 and the second sleeve 2; a limiting ring 19 installed on the inner sleeve 3 inside the first sleeve 1 near the second mounting ring 23; a limiting ring 19 installed on the inner sleeve 3 inside the second sleeve 2 near the first mounting ring 5; a stop ring 4 installed on the inner wall of the second sleeve 2 at the end opposite to the first sleeve 1; and a stop ring 4 also installed on the inner wall of the first sleeve 1 at a position opposite to the second sleeve 2. A calibration guide rod 17 is installed on the side wall of the first mounting ring 5 near the second mounting ring 23. A pressure spring 18 is sleeved on the calibration guide rod 17, and one end of the pressure spring 18 is fixedly installed on the side wall of the first mounting ring 5. The original length of the pressure spring 18 is shorter than the length of the calibration guide rod 17. A calibration hole 20 is opened on the side wall of the second mounting ring 23 at a corresponding horizontal height position. The diameter of the calibration hole 20 is the same as the diameter of the calibration guide rod 17. A switch assembly is set on the outer wall of the second sleeve 2 and the second mounting ring 23. The switch assembly is used to fix the first mounting ring 5 and the second mounting ring 23 together. Through the switch assembly and the limiting structure, the cable accessory can be quickly installed and disassembled, while ensuring the stability and quick disassembly of the connection. This accessory not only simplifies the installation steps and reduces the need for professional tools, but also improves the installation efficiency and provides a strong guarantee for the safe operation of the power system. In addition, its unique release ring 9 design makes the disassembly process more convenient and effectively avoids cable damage or safety hazards caused by difficult disassembly.
[0026] Furthermore, in this example, such as Figure 3 , Figure 4 and Figure 5As shown, the switch assembly includes a first concave mounting base 6, which is uniformly arranged in a circular array on the arc-shaped outer wall of the first mounting ring 5. Multiple sets of first concave mounting bases 6 are installed on the outer wall of the first mounting ring 5. A rotating rod 7 is installed on the inner wall of the first concave mounting base 6, and a limit plate 8 is rotatably mounted on the rotating rod 7. A second concave mounting base 21 is installed on the arc-shaped outer wall of the second mounting ring 23 at the position corresponding to each set of first concave mounting bases 6. A limit inclined plate 22 is installed at the bottom of the inner wall of the second concave mounting base 21. A release ring 9 is installed at the end of the limit plate 8 away from the second mounting ring 23. A limit hole 14 is opened at the end of the limit plate 8 away from the second mounting ring 23. A limit post 15 is slidably installed in the limit hole 14, and the other end of the limit post 15 is fixedly installed on the outer wall of the first mounting ring 5. A limiting spring 16 is fitted onto the limiting post 15. One end of the limiting spring 16 is mounted on the bottom wall of the limiting plate 8, and the other end is mounted on the outer wall of the first mounting ring 5. A trapezoidal block is mounted on the bottom of the limiting plate 8 near the second mounting ring 23. The trapezoidal block fits into the limiting inclined plate 22. A groove corresponding to the release ring 9 is provided on the limiting plate 8 to fit the release ring 9. A guide post 10 is installed on the side wall of the release ring 9 near the first mounting ring 5 between each group of first concave mounting seats 6. The first mounting ring 5 is positioned corresponding to the guide post 10. A circular hole with the same diameter as the guide post 10 is provided. The release ring 9 is an open circular ring, and finger grippers 11 are installed at both ends of the release ring 9. A horizontal guide rod 12 is installed on the side wall of the finger gripper 11, and a circular hole with the same diameter as the horizontal guide rod 12 is provided on the finger gripper 11 at the position corresponding to the horizontal guide rod 12. A horizontal spring 13 is sleeved on the horizontal guide rod 12, and both ends of the horizontal spring 13 are installed on the side wall of the finger gripper 11. First, the cable is installed in two inner sleeves 3, which are located inside the first sleeve 1 and the second sleeve 2, respectively. When the first sleeve 1 and the second sleeve 2 are moved to a relatively close position, the abutment rings 4 on their respective inner walls will first contact each other, playing a role in initial positioning and centering. As the two sleeves get closer, the first mounting ring 5 and the second mounting ring 23 also begin to approach each other. During this process, the alignment guide rod 17 is pushed along its length by the pressure spring 18, causing it to attempt to enter the alignment hole 20 on the side wall of the second mounting ring 23. When the alignment guide rod 17 successfully inserts into the alignment hole 20, it indicates that the two sleeves have been correctly aligned and have reached the expected connection position. Next, the limiting plate 8 can rotate around the rotating rod 7. When the first mounting ring 5 and the second mounting ring 23 are close enough, the bottom trapezoidal block of the limiting plate 8 will contact the limiting inclined plate 22 in the second concave mounting seat 21.As the device approaches further, the trapezoidal block slides along the limiting ramp 22, forcing the limiting plate 8 to rotate around the rotating rod 7 until the other end of the limiting plate 8 engages with the second concave mounting base 21, achieving initial fixation of the two mounting rings. Simultaneously, the limiting post 15 slides within the limiting hole 14 and is pushed by the limiting spring 16, ensuring that the limiting plate 8 remains firmly in its fixed position. Thus, the first sleeve 1 and the second sleeve 2 are securely connected, forming the main structure of the cold-shrink cable accessory. To release this connection, the user can pinch the finger-grip block 11 and pull, causing the release ring 9 to move along the guide post 10. During this process, the horizontal spring 13 is compressed. When the release ring 9 retracts sufficiently to release the limiting plate 8 from its locking position on the limiting ramp 22 within the second concave mounting base 21, the operator can then separate the first mounting ring 5 and the second mounting ring 23 in opposite directions, thus disengaging the device.
[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0028] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A cold shrink cable accessory characterised in that, The utility model relates to a cable fixing device, which comprises: a first sleeve (1) with an inner layer sleeve (3) installed inside, a cable installed inside the inner layer sleeve (3), a second sleeve (2) installed at one end of the first sleeve (1) in a corresponding position, an inner layer sleeve (3) installed inside the second sleeve (2), a first mounting ring (5) and a second mounting ring (23) respectively installed at opposite ends of the first sleeve (1) and the second sleeve (2), a limit ring (19) installed on the inner layer sleeve (3) inside the first sleeve (1) at one end close to the second mounting ring (23), a limit ring (19) installed on the inner layer sleeve (3) inside the second sleeve (2) at one end close to the first mounting ring (5), a stop ring (4) installed on the inner wall of the second sleeve (2) at one end close to the first sleeve (1), and the stop ring (4) also installed on the inner wall of the first sleeve (1) at a position close to the second sleeve (2); a switch assembly installed on the outer wall of the second sleeve (2) and the second mounting ring (23), which is used to fix the first mounting ring (5) and the second mounting ring (23) together.
2. A cold shrink cable accessory according to claim 1, characterised in that, A calibration guide rod (17) is installed on the side wall of one end of the first mounting ring (5) close to the second mounting ring (23), a compression spring (18) is installed on the calibration guide rod (17), one end of the compression spring (18) is fixedly installed on the side wall of the first mounting ring (5), the original length of the compression spring (18) is lower than the length of the calibration guide rod (17), a calibration hole (20) is opened at a corresponding horizontal position on the side wall of the second mounting ring (23), and the diameter of the calibration hole (20) is the same as the diameter of the calibration guide rod (17).
3. A cold shrink cable accessory according to claim 1, wherein, The switch assembly comprises a first recessed mounting seat (6) installed in a uniform circumferential array on the arc-shaped outer wall of the first mounting ring (5), a plurality of the first recessed mounting seats (6) are installed on the outer wall of the first mounting ring (5), a rotating rod (7) is installed on the inner wall of the first recessed mounting seat (6), a limit clamping plate (8) is rotatably installed on the rotating rod (7), a second recessed mounting seat (21) is installed on the arc-shaped outer wall of the second mounting ring (23) at a position corresponding to each group of the first recessed mounting seats (6), a limit inclined plate (22) is installed on the inner wall bottom end of the second recessed mounting seat (21), and a release ring (9) is installed on one end of the limit clamping plate (8) away from the second mounting ring (23).
4. A cold shrink cable accessory according to claim 3, wherein, The limiting clamping plate (8) is provided with a limiting hole (14) at one end away from the second mounting ring (23), a limiting column (15) is slidably installed in the limiting hole (14), the other end of the limiting column (15) is fixedly installed on the outer wall of the first mounting ring (5), a limiting spring (16) is installed on the limiting column (15), one end of the limiting spring (16) is installed on the bottom wall of the limiting clamping plate (8), and the other end of the limiting spring (16) is installed on the outer wall of the first mounting ring (5).
5. A cold shrink cable accessory according to claim 4, wherein, The end of the limiting clamping plate (8) close to the second mounting ring (23) is provided with a trapezoidal block, and the trapezoidal block is matched with the limiting inclined plate (22).
6. A cold shrink cable accessory according to claim 5, wherein, The limiting clamping plate (8) is provided with a groove matched with the release ring (9) at a position corresponding to the release ring (9), a guide column (10) is installed on the side wall of the release ring (9) between each group of the first concave mounting seat (6) and close to the first mounting ring (5), and the first mounting ring (5) is provided with a circular hole with the same diameter as the guide column (10) at a position corresponding to each group of the guide column (10).
7. A cold shrink cable accessory according to claim 6, wherein, The release ring (9) is an open circular ring, the two ends of the release ring (9) are provided with finger pinch blocks (11), horizontal guide rods (12) are installed on the side walls of the finger pinch blocks (11), the finger pinch blocks (11) are provided with circular holes with the same diameter as the horizontal guide rods (12) at positions corresponding to the horizontal guide rods (12), and horizontal springs (13) are installed on the horizontal guide rods (12), and the two ends of the horizontal springs (13) are installed on the side walls of the finger pinch blocks (11).