A heat-dissipating power distribution cable joint protective sleeve
By introducing a heat dissipation fin structure and an adjustment structure into the cable connector protective sleeve, the problems of insufficient heat dissipation and poor adaptability of traditional protective sleeves are solved, achieving efficient heat dissipation and flexible adaptation, and ensuring the safety and stability of the power distribution system.
Patent Information
- Application Number
- CN202522108496.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-30
AI Technical Summary
Traditional cable connector protective sleeves have insufficient heat dissipation performance and poor adaptability, which can easily lead to increased connector temperature and cause safety accidents. Furthermore, the length of the protective sleeve cannot be flexibly adjusted to adapt to different connector specifications.
A heat-dissipating power distribution cable connector protective sleeve was designed, comprising a left protective sleeve, a right protective sleeve, a cable fixing device, an adjustment structure, and a heat dissipation structure. The heat dissipation efficiency is improved through the heat dissipation fin structure, and the length of the protective sleeve can be flexibly adjusted through the adjustment structure to adapt to cable connectors of different lengths.
It improves the heat dissipation performance of cable connectors, enhances the compatibility of protective sleeves, reduces the risk of temperature buildup, ensures the safe and stable operation of the power distribution system, and reduces usage costs.
Smart Images
Figure CN224683845U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable connector technology, specifically a heat-dissipating power distribution cable connector protective sleeve. Background Technology
[0002] In power transmission and distribution systems, cable connectors are key connection components for ensuring continuous power delivery, and their connection stability and operational safety directly determine the reliability of the entire power distribution network. However, during actual operation, cable connectors continuously generate heat due to resistive losses caused by current flow.
[0003] Traditional cable connector protection devices mostly employ a sealed structure design, which, while providing some dust and water protection, generally has poor heat dissipation performance. Heat accumulates continuously within the protective sleeve, easily leading to a sustained increase in temperature at the connector. When the temperature exceeds the tolerance limit of the cable insulation layer and the connector connection, it can cause accelerated insulation aging, increased contact resistance, and ultimately trigger short circuits, tripping, or even fires. Furthermore, traditional protective sleeves are typically of fixed length, unable to be flexibly adjusted to accommodate cable connectors of varying lengths, resulting in poor adaptability. To address the aforementioned technical pain points, this utility model provides a heat-dissipating power distribution cable connector protective sleeve, which improves the heat dissipation performance of the cable connector and allows for flexible adjustment of the protective sleeve size according to the connector length. This effectively solves the problems of insufficient heat dissipation and poor adaptability of traditional protective sleeves, ensuring the safe and stable operation of the power distribution system. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a heat-dissipating power distribution cable connector protective sleeve, which solves the problems of insufficient heat dissipation performance and poor adaptability of traditional cable connector protective sleeves.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a heat dissipation type power distribution cable connector protective sleeve, including a left protective sleeve, a right protective sleeve, a cable fixing device, an adjustment structure, and a heat dissipation structure; The right protective sleeve is fitted over the left protective sleeve; together they enclose a hollow cavity for accommodating the cable connector; the right protective sleeve includes a first upper shell and a first lower shell that interlock with each other; the left protective sleeve includes a second upper shell and a second lower shell that interlock with each other. The cable fixing device has two parts, which are respectively fixedly installed on the inner walls of the first lower housing and the second lower housing; The adjustment structures are respectively provided on the outer wall of the left protective sleeve and the inner wall of the right protective sleeve for adjusting the overall length of the protective sleeve; The heat dissipation structure is located outside the first upper housing and the first lower housing for heat dissipation.
[0006] Furthermore, the cable fixing device includes: a crank column, a baffle, a spring, and a hinge shaft; two cable fixing devices are respectively fixedly installed on the first lower housing and the second lower housing; The structure of the cable fixing device fixed on the second lower housing is as follows; The curved column is rotatably connected to the inner wall of the second lower housing via a hinge shaft. There are two curved columns, each with a semi-circular arc structure. The two curved columns are symmetrically arranged and, after being symmetrically arranged, they enclose a semi-enclosed structure for clamping cables. The radius of the arc is adapted to the outer diameter of the cable to be fixed. The baffle is fixed to the side wall of the curved column; the portion of the baffle extending out of the curved column is used to connect with the spring. The two ends of the spring abut against the lower end of the baffle and the inner wall of the second lower housing; the spring is normally in a compressed state and pushes the baffle upward, causing the two cranks to rotate around the hinge axis and tend to move closer to each other.
[0007] Furthermore, the adjustment structure includes: a snap-fit and a limiting groove; The snap-fit fastener is located on the inner wall of the first upper housing and the first lower housing; it has a ring-shaped structure with a triangular cross-section. There are multiple limiting grooves; the multiple limiting grooves are equally spaced along the axial direction on the outer walls of the second upper shell and the second lower shell; the limiting groove is an annular groove with a triangular cross-section, and its size and shape match the snap-fit fastener.
[0008] Furthermore, the snap fastener is made of nylon material, and when the snap fastener is snapped into the limiting groove, it can deform slightly and fit against the inner wall of the limiting groove.
[0009] Furthermore, the heat dissipation structure is a heat dissipation fin structure: the heat dissipation structure has several fins that are equally spaced and arranged on the outer walls of the first upper shell and the first lower shell and extend outward.
[0010] Furthermore, the second lower housing is provided with a number of pins, and the second upper housing is provided with a corresponding number of insertion holes. The diameter of the insertion hole is adapted to the outer diameter of the pin, and the depth of the insertion hole is adapted to the length of the pin. The second upper housing and the second lower housing are connected and fixed by inserting the pin into the insertion hole.
[0011] Furthermore, both the first upper housing and the first lower housing are provided with threaded holes; the first upper housing and the first lower housing are connected together by bolts.
[0012] Furthermore, a first sealing gasket is provided between the mating surfaces of the first upper housing and the first lower housing; A second sealing gasket is provided between the mating surfaces of the second upper housing and the second lower housing; Elastic sealing rings are provided at both ends of the left protective sleeve and at both ends of the right protective sleeve.
[0013] Beneficial effects This invention improves the heat dissipation efficiency of the protective sleeve by incorporating heat dissipation fins on the outer wall of the right protective sleeve. The heat dissipation fins conduct heat generated by the cable connectors inside the protective sleeve to the external environment, effectively reducing the temperature inside the protective sleeve.
[0014] This invention achieves flexible adjustment of the protective sleeve length through an adjustable structure. The adjustable structure consists of a snap-fit block and a limiting groove. By snapping the snap-fit block into different limiting grooves, the length of the protective sleeve can be adjusted within a range, adapting to cable connectors of different lengths. This eliminates the need for separate protective sleeves for connectors of different lengths, improving the versatility of the protective sleeve and reducing usage costs. Attached Figure Description
[0015] Figure 1 This is an exploded structural diagram of the protective sleeve of this utility model; Figure 2 This is a schematic diagram of the external structure of the protective sleeve of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the protective sleeve of this utility model; Figure 4 This is a diagram showing the internal structure of the protective sleeve of this utility model; Figure 5 This is a schematic diagram of the cable fixing device of the protective sleeve of this utility model.
[0016] In the figure: 1. First upper shell, 2. First lower shell, 3. Second upper shell, 4. Second lower shell, 5. Cable fixing device, 51. Crank column, 52. Baffle, 53. Spring, 54. Hinge shaft, 6. Adjustment structure, 61. Snap-fit block, 62. Limiting groove, 7. Heat dissipation structure, 8. Pin, 9. Threaded hole. Detailed Implementation
[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Depend on Figure 1-5 It can be seen that a heat dissipation type power distribution cable connector protective sleeve includes a left protective sleeve, a right protective sleeve, a cable fixing device 5, an adjustment structure 6, and a heat dissipation structure 7; The right protective sleeve is fitted over the left protective sleeve; together they form a hollow cavity to accommodate the cable connector; the right protective sleeve includes a first upper shell 1 and a first lower shell 2 that interlock; the first upper shell 1 and the first lower shell 2, when interlocked, form a cylindrical structure with open ends; the left protective sleeve includes a second upper shell 3 and a second lower shell 4 that interlock; the second upper shell 3 and the second lower shell 4, when interlocked, also form a cylindrical structure with open ends, and the outer diameter of the left protective sleeve matches the inner diameter of the right protective sleeve. Two cable fixing devices 5 are respectively fixedly installed on the inner walls of the first lower housing 2 and the second lower housing 4; used to clamp and fix the cables passing through the protective sleeve. Adjustment structures 6 are respectively set on the outer wall of the left protective sleeve and the inner wall of the right protective sleeve to adjust the overall length of the protective sleeve; by cooperating with the adjustment structures 6, the relative position between the left and right protective sleeves is fixed, thereby adjusting the overall length of the protective sleeve to adapt to cable connectors of different lengths. The heat dissipation structure 7 is located on the outside of the first upper housing 1 and the first lower housing 2. It is used to accelerate the dissipation of heat generated by the cable connectors inside the protective sleeve and reduce the temperature inside the protective sleeve.
[0019] Furthermore, the cable fixing device 5 includes: a crank column 51, a baffle 52, a spring 53, and a hinge shaft 54; there are two cable fixing devices 5 respectively fixedly installed on the first lower housing 2 and the second lower housing 4; The structure of the cable fixing device 5 fixed on the second lower housing 4 is as follows; The curved column 51 is rotatably connected to the inner wall of the second lower housing 4 via the hinge shaft 54. There are two curved columns 51. The curved column 51 is a semi-circular arc structure. The two curved columns 51 are symmetrically arranged. After the two curved columns 51 are symmetrically arranged, they enclose a semi-enclosed structure for clamping the cable. The radius of the arc is adapted to the outer diameter of the cable to be fixed. The baffle 52 is fixed to the side wall of the curved column 51; the part of the baffle 52 extending out of the curved column 51 is used to connect with the spring 53. The two ends of the spring 53 abut against the lower end of the baffle 52 and the inner wall of the second lower housing 4. The spring 53 is normally in a compressed state and pushes the baffle 52 upward, causing the two cranks 51 to rotate around the hinge axis 54 and tend to move closer to each other, thereby generating a clamping force on the cable clamped between the two cranks 51. The cable fixing device 5 fixed on the first lower housing 2 and the cable fixing device 5 fixed on the second lower housing 4 have the same structure, and their installation positions are correspondingly distributed.
[0020] In use, the cable is clamped between the two cranks 51. The spring 53 drives the two cranks 51 to clamp the cable in place.
[0021] Furthermore, the adjustment structure 6 includes: a snap-fit 61 and a limiting groove 62; The snap-fit fastener 61 is disposed on the inner wall of the first upper housing 1 and the first lower housing 2; it is an annular structure with a triangular cross-section; in this embodiment, there are two snap-fit fasteners 61. There are multiple limiting grooves 62; multiple limiting grooves 62 are equally spaced along the axial direction on the outer walls of the second upper housing 3 and the second lower housing 4; the limiting grooves 62 are annular grooves with a triangular cross section, and their size and shape match the snap fastener 61.
[0022] By engaging the snap-fit 61 within different limiting slots 62, the axial overlap length of the left and right protective sleeves can be altered, thereby adjusting the overall length of the protective sleeves to accommodate cable connectors of varying lengths. In the diagram, the left and right protective sleeves are in their minimum width state. To increase the width, the right protective sleeve can be moved to the right by one or more limiting slots 62, allowing the snap-fit 61 to engage within the moved limiting slot 62; this will correspondingly increase the overall width.
[0023] Furthermore, the snap-fit 61 is made of nylon material, which has a certain strength and elasticity, allowing it to deform slightly when snapped into the limiting groove, thus tightly fitting the groove wall and improving the sealing performance. Furthermore, the heat dissipation structure 7 is a heat dissipation fin structure: the heat dissipation structure 7 has several equally spaced fins arranged on the outer wall of the first upper shell 1 and the first lower shell 2 and extending outward.
[0024] The heat dissipation fins increase the contact area between the protective sleeve and the outside air, accelerating the conduction and dissipation of heat from inside the protective sleeve to the outside. At the same time, the outward extension of the heat dissipation fins increases the spacing between adjacent cables, preventing heat accumulation caused by multiple cables being arranged in a concentrated manner.
[0025] Furthermore, the second lower housing 4 is provided with a number of pins 8, and the second upper housing 3 is provided with a corresponding number of insertion holes. The diameter of the insertion holes is adapted to the outer diameter of the pins 8, and the depth of the insertion holes is adapted to the length of the pins 8. The second upper housing 3 and the second lower housing 4 are connected and fixed by inserting the pins 8 into the insertion holes.
[0026] Furthermore, both the first upper housing 1 and the first lower housing 2 are provided with threaded holes 9; the first upper housing 1 and the first lower housing 2 are connected together by bolts.
[0027] By passing bolts through the threaded holes 9 corresponding to the first upper housing 1 and the first lower housing 2, and tightening them, the first upper housing 1 and the first lower housing 2 can be detachably fixed. Moreover, the right protective sleeve is fastened to the outer wall of the left protective sleeve. When the bolts are tightened, the left protective sleeve can also be pressed and fixed. This ensures the structural stability of the right protective sleeve after it is fastened, and facilitates subsequent disassembly and maintenance.
[0028] Furthermore, a first sealing gasket is provided between the fastening surfaces of the first upper housing 1 and the first lower housing 2. The first sealing gasket has an annular structure and is made of nitrile rubber. The first sealing gasket is fixed to the fastening surface of the first lower housing 2 through a slot. When the first upper housing 1 and the first lower housing 2 are fastened together, the first sealing gasket is squeezed and deformed, thereby achieving a seal at the fastening point of the right protective sleeve. A second sealing gasket is provided between the fastening surfaces of the second upper housing 3 and the second lower housing 4. The structure, material and installation method of the second sealing gasket are completely the same as those of the first sealing gasket, so as to achieve the sealing of the fastening point of the left protective sleeve. Both ends of the left protective sleeve and both ends of the right protective sleeve are provided with elastic sealing rings. The elastic sealing rings are made of silicone rubber, and their inner diameter is adapted to the outer diameter of the cable to be passed through. The elastic sealing rings can fit tightly against the outer wall of the cable to achieve a seal between the protective sleeve and the cable, preventing external dust and moisture from entering the protective sleeve.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A heat-dissipating protective sleeve for power distribution cable connectors, characterized in that: It includes a left protective sleeve, a right protective sleeve and a cable fixing device (5), an adjustment structure (6) and a heat dissipation structure (7); The right protective sleeve is fitted over the left protective sleeve; together they enclose a hollow cavity for accommodating the cable connector; the right protective sleeve includes a first upper shell (1) and a first lower shell (2) that are interlocked with each other; the left protective sleeve includes a second upper shell (3) and a second lower shell (4) that are interlocked with each other. The cable fixing device (5) has two parts, which are respectively fixedly installed on the inner walls of the first lower housing (2) and the second lower housing (4); The adjustment structure (6) is respectively set on the outer wall of the left protective sleeve and the inner wall of the right protective sleeve to adjust the overall length of the protective sleeve; The heat dissipation structure (7) is located outside the first upper shell (1) and the first lower shell (2) for heat dissipation.
2. The heat-dissipating power distribution cable connector protective sleeve according to claim 1, characterized in that: The cable fixing device (5) includes: a curved column (51), a baffle (52), a spring (53), and a hinge shaft (54); two of the cable fixing devices (5) are respectively fixedly installed on the first lower housing (2) and the second lower housing (4); The structure of the cable fixing device (5) fixed on the second lower housing (4) is as follows; The curved column (51) is rotatably connected to the inner wall of the second lower housing (4) via a hinge shaft (54). There are two curved columns (51). The curved column (51) is a semi-circular arc structure. The two curved columns (51) are symmetrically arranged. After the two curved columns (51) are symmetrically arranged, they enclose a semi-enclosed structure for clamping the cable. The radius of the arc is adapted to the outer diameter of the cable to be fixed. The baffle (52) is fixed to the side wall of the curved column (51); the part of the baffle (52) extending out of the curved column (51) is used to connect with the spring (53); The two ends of the spring (53) abut against the lower end of the baffle (52) and the inner wall of the second lower housing (4); the spring (53) is normally in a compressed state and pushes the baffle (52) upward, causing the two cranks (51) to rotate around the hinge axis (54) and tend to move closer to each other.
3. The heat-dissipating power distribution cable connector protective sleeve according to claim 2, characterized in that: The adjustment structure (6) includes: a snap-fit (61) and a limiting groove (62); The snap-fit fastener (61) is disposed on the inner wall of the first upper housing (1) and the first lower housing (2); it is a ring structure with a triangular cross-section; There are multiple limiting grooves (62); multiple limiting grooves (62) are equally spaced along the axial direction on the outer walls of the second upper shell (3) and the second lower shell (4); the limiting groove (62) is an annular groove with a triangular cross section, and its size and shape match the snap fastener (61).
4. The heat-dissipating power distribution cable connector protective sleeve according to claim 3, characterized in that: The snap fastener (61) is made of nylon material. When the snap fastener (61) is snapped into the limiting groove (62), it can be slightly deformed and fit against the inner wall of the limiting groove (62).
5. The heat-dissipating power distribution cable connector protective sleeve according to claim 1, characterized in that: The heat dissipation structure (7) is a heat dissipation fin structure: the heat dissipation structure (7) has several equally spaced fins arranged on the outer wall of the first upper shell (1) and the first lower shell (2) and extending outward.
6. The heat-dissipating power distribution cable connector protective sleeve according to claim 1, characterized in that: The second lower housing (4) is provided with a number of pins (8), and the second upper housing (3) is provided with a corresponding number of insertion holes. The diameter of the insertion hole is adapted to the outer diameter of the pin (8), and the depth of the insertion hole is adapted to the length of the pin (8). The second upper housing (3) and the second lower housing (4) are connected and fixed by inserting the pin (8) into the insertion hole.
7. The heat-dissipating power distribution cable connector protective sleeve according to claim 1, characterized in that: Both the first upper housing (1) and the first lower housing (2) are provided with threaded holes (9); the first upper housing (1) and the first lower housing (2) are connected together by bolts.
8. The heat-dissipating power distribution cable connector protective sleeve according to claim 1, characterized in that: A first sealing gasket is provided between the mating surfaces of the first upper housing (1) and the first lower housing (2); A second sealing gasket is provided between the mating surfaces of the second upper housing (3) and the second lower housing (4); Elastic sealing rings are provided at both ends of the left protective sleeve and at both ends of the right protective sleeve.