Flexible power cable with protection function

Abstract

This utility model provides a flexible power cable with protective function, including a cable body and a protective sleeve fitted over the cable body. The protective sleeve includes a first tube segment and a second tube segment connected by bending. The outer wall of the first tube segment has a first contact surface, and the outer wall of the second tube segment has a second contact surface. Both the first and second contact surfaces are planar structures, and are arranged adjacent to each other. The included angle between the first and second contact surfaces is 90° to 120°. This flexible power cable with protective function can prevent the cable body from directly contacting the apex corner and causing wear, thereby reducing the risk of cable body damage and extending the service life of the cable body.

Description

Technical Field

[0001] This utility model relates to the field of cable structure technology, and in particular to a flexible power cable with protective function. Background Technology

[0002] Flexible power cables are a common type of cable, widely used in power transmission, data transmission, and communication control. Currently, commonly used flexible power cables generally consist of an outer protective layer (i.e., armor layer) and multiple strands of core wires within the outer protective layer. The outer protective layer is typically made of rubber.

[0003] In some application scenarios, flexible power cables need to pass through corners of equipment, walls, or other structural components when being routed. When the flexible power cables pass through these corners, they need to bend, and the outer protective layer of the flexible power cables will come into contact with the top corner of the corner. Due to the wear and tear caused by the top corner, the outer protective layer of the flexible power cables is prone to damage at the top corner, which affects the service life of the flexible power cables. Utility Model Content

[0004] The purpose of this invention is to provide a flexible power cable with protective function, which can prevent the cable body from directly contacting the top corner and causing wear, thereby reducing the risk of cable body damage and extending the service life of the cable body.

[0005] This utility model provides a flexible power cable with protective function, including a cable body and a protective sleeve sleeved on the cable body. The protective sleeve includes a first pipe segment and a second pipe segment connected by bending. The outer wall of the first pipe segment is provided with a first contact surface, and the outer wall of the second pipe segment is provided with a second contact surface. Both the first contact surface and the second contact surface are planar structures and are arranged adjacent to each other. The included angle between the first contact surface and the second contact surface is 90° to 120°.

[0006] In one possible implementation, the protective sleeve has a plug hole that extends through the first pipe segment and the second pipe segment, and the cable body is inserted into and passes through the plug hole.

[0007] In one possible implementation, the insertion hole extends in an arc shape within the protective sleeve.

[0008] In one possible implementation, the diameter of the plug hole is R1, the outer diameter of the cable body is R2, and R1 and R2 satisfy: R1 = k * R2, where k is 1.05 to 1.2.

[0009] In one possible implementation, the protective sleeve is made of an elastic material; the two ends of the plug hole are respectively provided with an insertion port and an exit port, and an annular limiting part is provided on the inner wall of the plug hole near the exit port end. The minimum inner diameter of the annular limiting part is R3, the diameter of the plug hole at other positions except for the annular limiting part is R1, and the outer diameter of the cable body is R2. R1, R2 and R3 satisfy: R1 = k1*R2, R3 = k2*R2, k1 is 1.05~1.2, and k2 is 0.9~1.

[0010] In one feasible manner, the cross-section of the annular limiting portion has a gradually decreasing inner diameter slope structure in the direction from the insertion port toward the outlet.

[0011] In one possible implementation, the first contact surface and the second contact surface intersect, and a sharp angle is formed at the intersection of the first contact surface and the second contact surface; or, the first contact surface and the second contact surface are connected by a curved transition.

[0012] In one possible implementation, a first adhesive layer is provided on the first contact surface, and a second adhesive layer is provided on the second contact surface.

[0013] In one possible implementation, a first release film layer is provided on the surface of the first adhesive layer, and a second release film layer is provided on the surface of the second adhesive layer.

[0014] In one possible implementation, the included angle between the first contact surface and the second contact surface is greater than 90° and less than or equal to 120°; the protective sleeve further includes a thickening pad, which is a wedge-shaped structure; the thickening pad is used to fit and connect with the first contact surface and / or the second contact surface to change the installation adaptation angle of the protective sleeve.

[0015] The flexible power cable with protective function provided by this utility model, by setting a protective sleeve on the outside of the cable body, can prevent the cable body from directly contacting the top corner of the corner and causing wear, thereby reducing the risk of cable body damage and extending the service life of the cable body. At the same time, since the protective sleeve has a first contact surface and a second contact surface, both of which are planar structures, and the included angle between the first contact surface and the second contact surface is 90° to 120°, the protective sleeve can be adapted to the shape of the corner position. That is, during installation, the first contact surface and the second contact surface respectively fit against the adjacent side walls of the corner position. Compared with the arc surface of the outer wall of the circular tube structure, the planar first contact surface and the second contact surface have a larger contact area with the side wall of the corner position. This allows the protective sleeve to be well limited at the corner position, preventing the protective sleeve from moving at the corner position, and also facilitating installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a flexible power cable with protective function in an embodiment of this utility model.

[0017] Figure 2 for Figure 1 The main view.

[0018] Figure 3 for Figure 2 A schematic diagram of the cross-section at position AA.

[0019] Figure 4 for Figure 2 A schematic diagram of the cross-section at position BB.

[0020] Figure 5 for Figure 1 Side view.

[0021] Figure 6 for Figure 5 A schematic diagram of the cross-section at position CC.

[0022] Figure 7 This is a schematic diagram of the longitudinal section of the protective sleeve in an embodiment of this utility model.

[0023] Figure 8 This is a longitudinal cross-sectional view of the protective sleeve in another embodiment of the present invention.

[0024] Figure 9 This is a longitudinal cross-sectional view of the protective sleeve in another embodiment of the present invention.

[0025] Figure 10 This is a longitudinal cross-sectional view of the protective sleeve in another embodiment of the present invention.

[0026] Figure 11 This is a longitudinal cross-sectional view of the protective sleeve in another embodiment of the present invention.

[0027] Figure 12 This is a longitudinal cross-sectional view of the protective sleeve in another embodiment of the present invention.

[0028] Figure 13 This is a longitudinal cross-sectional view of the protective sleeve in another embodiment of the present invention.

[0029] Figure 14 This is a schematic diagram illustrating an application scenario of a flexible power cable with protective function in an embodiment of this utility model. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed by this utility model.

[0033] like Figures 1 to 7 As shown, this embodiment of the utility model provides a flexible power cable with protective function, including a cable body 1 and a protective sleeve 2 sleeved on the outside of the cable body 1. The cable body 1 includes an insulating protective layer (not shown) and multiple conductors (not shown) disposed inside the insulating protective layer, which is made of rubber.

[0034] Along the extension direction of the protective sleeve 2 (i.e., along its length), the protective sleeve 2 includes a first pipe section 21 and a second pipe section 22 that are bent and connected, and the first pipe section 21 and the second pipe section 22 are integral structures. The outer wall of the first pipe section 21 is provided with a first contact surface 211, and the outer wall of the second pipe section 22 is provided with a second contact surface 221. Both the first contact surface 211 and the second contact surface 221 are planar structures. The first contact surface 211 and the second contact surface 221 are arranged adjacent to each other and are located on the same side of the protective sleeve 2, that is, the first contact surface 211 and the second contact surface 221 are both located on the side of the protective sleeve 2 closest to its bending center (i.e., the inner side). The included angle α between the first contact surface 211 and the second contact surface 221 is 90° to 120°, that is, the installation adaptation angle of the protective sleeve 2 is 90° to 120° (this included angle α can adapt to the angle of most corner positions).

[0035] Specifically, in combination Figure 14This flexible power cable with protective function can be used on device 3. In some application scenarios, since one end of the cable body 1 needs to be connected to the electrical components inside device 3 and the other end needs to be connected to the electrical components outside device 3, and the cable body 1 will pass through the corner of device 3 during routing; in this case, a protective sleeve 2 can be installed on the cable body 1. The protective sleeve 2 is located at the corner of device 3, and the first contact surface 211 and the second contact surface 221 of the protective sleeve 2 are in close contact with the adjacent two side walls of the corner, so that the protective sleeve 2 is limited at the corner. The protective sleeve 2 can play a good protective role for the cable body 1, not only preventing the cable body 1 from directly contacting the top corner of the corner and causing wear, but also reducing the bending stress on the cable body 1 at the top corner (i.e., the protective sleeve 2 can reduce the bending amplitude of the cable body 1 at the top corner), thereby reducing the risk of damage to the cable body 1. Of course, this flexible power cable with protective function can also be used in other scenarios, such as routing on walls or other structural components.

[0036] The flexible power cable with protective function provided in this embodiment of the utility model, by setting a protective sleeve 2 on the outside of the cable body 1, can prevent the cable body 1 from directly contacting the top corner of the corner position and causing wear, thereby reducing the risk of damage to the cable body 1 and extending the service life of the cable body 1. At the same time, since the protective sleeve 2 has a first contact surface 211 and a second contact surface 221, both of which are planar structures, and the included angle α between the first contact surface 211 and the second contact surface 221 is 90° to 120°, the protective sleeve 2 can be adapted to the shape of the corner position. That is, during installation, the first contact surface 211 and the second contact surface 221 respectively fit into contact with the adjacent side walls of the corner position. Compared with the arc surface of the outer wall of the circular tube structure, the planar first contact surface 211 and the second contact surface 221 have a larger contact area with the side wall of the corner position. This allows the protective sleeve 2 to be well limited at the corner position, preventing the protective sleeve 2 from moving at the corner position, and also facilitating installation.

[0037] like Figures 1 to 7 As shown, in one embodiment, the first pipe segment 21 and the second pipe segment 22 are bent at 90°, and the included angle α between the first contact surface 211 and the second contact surface 221 is 90°, that is, the installation adaptation angle of the protective sleeve 2 is 90°, so that the protective sleeve 2 can be installed at a 90° corner position. At the same time, the first contact surface 211 and the second contact surface 221 intersect, and a sharp corner is formed at the intersection of the first contact surface 211 and the second contact surface 221, so that the protective sleeve 2 can adapt to application scenarios where the apex angle of the corner position is a sharp angle.

[0038] like Figure 11As shown, in another embodiment, the included angle α between the first contact surface 211 and the second contact surface 221 is greater than 90° and less than or equal to 120°, that is, the installation adaptation angle of the protective sleeve 2 is greater than 90° and less than or equal to 120°. The installation adaptation angle of the protective sleeve 2 can be adaptively adjusted according to the angle of the corner position.

[0039] like Figure 10 As shown, in another embodiment, the first contact surface 211 and the second contact surface 221 are connected by a curved surface 23, so that the protective sleeve 2 can adapt to application scenarios where the apex corner of the corner position is a curved angle. In one embodiment, the curved surface 23 is a circular arc surface.

[0040] As one implementation method, the protective case 2 can be made of materials such as rubber, silicone, or plastic. The protective case 2 can be manufactured through methods such as vulcanization molding or injection molding. Of course, the protective case 2 can also be made of metal.

[0041] like Figures 1 to 7 As shown, in one embodiment, the protective sleeve 2 is provided with a plug-in hole 20, which penetrates the first pipe section 21 and the second pipe section 22. The plug-in hole 20 has an insertion port 201 and a through-hole 202 at its two ends. The insertion port 201 is located at one end of the first pipe section 21, and the through-hole 202 is located at one end of the second pipe section 22. The cable body 1 is inserted into and passes through the plug-in hole 20, that is, the cable body 1 is inserted from the insertion port 201 into the plug-in hole 20 and exits from the through-hole 202, thereby fitting the protective sleeve 2 onto the cable body 1. In another embodiment, the plug-in hole 20 extends in an arc shape within the protective sleeve 2, that is, the longitudinal section of the plug-in hole 20 is arc-shaped. This facilitates the cable body 1 passing through the plug-in hole 20 and also helps reduce the bending stress on the cable body 1. In one embodiment, the insertion hole 20 extends in an arc shape within the protective sleeve 2 (for example, the longitudinal section of the insertion hole 20 is a 1 / 4 circular ring structure), that is, the longitudinal section of the insertion hole 20 is arc-shaped.

[0042] like Figures 1 to 7 As shown, in one embodiment, the cross-section of the plug hole 20 is circular, and the diameter of each part of the plug hole 20 is equal. The diameter of the plug hole 20 is R1, and the outer diameter of the cable body 1 is R2. R1 and R2 satisfy: R1 = k * R2, where k is 1.05 to 1.2, that is, R1 is 1.05 to 1.2 times R2. By setting the diameter of the plug hole 20 to be slightly larger than the outer diameter of the cable body 1, it is not only convenient for the cable body 1 to pass through the plug hole 20, but also, to a certain extent, it can prevent the relative slippage between the protective sleeve 2 and the cable body 1.

[0043] like Figure 9As shown, in another embodiment, the protective sleeve 2 is made of an elastic material, specifically elastic rubber, elastic silicone, etc. The two ends of the insertion hole 20 are respectively provided with an insertion port 201 and a through port 202. An annular limiting part 203 is provided on the inner wall of the insertion hole 20 near the through port 202. The annular limiting part 203 is an integral structure with the protective sleeve 2. The minimum inner diameter of the annular limiting part 203 is R3. The diameter of the insertion hole 20 at other locations except for the annular limiting part 203 is R1 (i.e., the diameters at other locations are the same and are all R1, and the diameter of the insertion port 201 is also R1). The outer diameter of the cable body 1 is R2. R1, R2, and R3 satisfy: R1 = k1 * R2, R3 = k2 * R2, k1 is 1.05~1.2, k2 is 0.9~1, that is, the inner diameter of the annular limiting part 203 is approximately... The diameter of the insertion hole 20 is less than or equal to the outer diameter of the cable body 1, while the diameter of other parts of the insertion hole 20 is slightly larger than the outer diameter of the cable body 1. This not only facilitates the cable body 1 to pass through the insertion hole 20, but also allows the inner wall of the annular limiting part 203 to make good contact with the outer wall of the cable body 1, further preventing relative slippage between the protective sleeve 2 and the cable body 1. (It should be noted that since the protective sleeve 2 is made of elastic material, when the cable body 1 passes through the annular limiting part 203, the cable body 1 will squeeze the annular limiting part 203 to increase its inner diameter, thereby allowing the cable body 1 to pass through the annular limiting part 203 smoothly, and the annular limiting part 203 can better squeeze and fix the cable body 1 under its own elastic force.) As one embodiment, the cross-section of the annular limiting part 203 has a gradually decreasing inner diameter slope structure in the direction from the insertion port 201 to the outlet port 202. At this time, the diameter of the outlet port 202 is R3, which makes it easier for the cable body 1 to pass through the annular limiting part 203.

[0044] like Figure 8 As shown, in another embodiment, a first adhesive layer 24 is provided on the first contact surface 211, and a second adhesive layer 25 is provided on the second contact surface 221. During installation, the protective sleeve 2 can be adhered and fixed to the adjacent side walls at the corner position by the first adhesive layer 24 and the second adhesive layer 25, thereby better limiting and fixing the protective sleeve 2. At the same time, a first release film layer 241 is provided on the surface of the first adhesive layer 24, and a second release film layer 251 is provided on the surface of the second adhesive layer 25. The first release film layer 241 and the second release film layer 251 can protect the first adhesive layer 24 and the second adhesive layer 25. The first release film layer 241 and the second release film layer 251 need to be peeled off when installing the protective sleeve 2 to expose the first adhesive layer 24 and the second adhesive layer 25. The materials of the first adhesive layer 24, the second adhesive layer 25, the first release film layer 241, and the second release film layer 251 can be found in the prior art and will not be described in detail here.

[0045] like Figure 12As shown, in another embodiment, the included angle α between the first contact surface 211 and the second contact surface 221 is greater than 90° and less than or equal to 120°. The protective sleeve 2 also includes a thickening pad 26, which has a wedge-shaped structure (i.e., a structure that is thick at one end and thin at the other end), and both opposite sides of the thickening pad 26 are planar structures; the thickening pad 26 is used to fit and connect with the first contact surface 211 and / or the second contact surface 221 to change the installation adaptation angle of the protective sleeve 2. When the thickening pad 26 is not used, the installation adaptation angle of the protective sleeve 2 is the original angle α between the first contact surface 211 and the second contact surface 221. When the thickening pad 26 is used, the installation adaptation angle of the protective sleeve 2 is the angle between the thickening pad 26 and the first contact surface 211 / second contact surface 221, or the angle between the thickening pads 26 themselves. This setting allows one protective sleeve 2 to be suitable for different installation scenarios (for example, if the original angle α between the first contact surface 211 and the second contact surface 221 is 120°, the installation adaptation angle of the protective sleeve 2 is 120°; when the thickening pad 26 is placed on the first contact surface 211 and the second contact surface 221, the installation adaptation angle of the protective sleeve 2 becomes 90°, achieving the purpose of one protective sleeve 2 being suitable for different installation scenarios). The thickening pad 26 can be fixed to the first contact surface 211 and / or the second contact surface 221 by means of adhesive, screws, etc. Meanwhile, an adhesive layer (not shown) can also be provided on the surface of the thickening pad 26 away from the first contact surface 211 / second contact surface 221 to adhere and fix the thickening pad 26 to the side wall at the corner position. Figure 12 As shown, in one embodiment, the thickening pad 26 has a triangular block structure, that is, the cross-section of the thickening pad 26 is a triangular structure. Figure 13 As shown, in another embodiment, the thickening pad 26 has a trapezoidal block structure, that is, the cross-section of the thickening pad 26 is a trapezoidal structure.

[0046] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A flexible power cable with protective function, characterized in that, The cable includes a cable body (1) and a protective sleeve (2) fitted over the cable body (1). The protective sleeve (2) includes a first pipe section (21) and a second pipe section (22) that are bent and connected. The outer wall of the first pipe section (21) is provided with a first contact surface (211), and the outer wall of the second pipe section (22) is provided with a second contact surface (221). Both the first contact surface (211) and the second contact surface (221) are planar structures. The first contact surface (211) and the second contact surface (221) are arranged adjacent to each other. The included angle (a) between the first contact surface (211) and the second contact surface (221) is 90° to 120°.

2. The flexible power cable with protective function as described in claim 1, characterized in that, The protective sleeve (2) is provided with a plug hole (20), which penetrates the first pipe section (21) and the second pipe section (22). The cable body (1) is inserted into and passes through the plug hole (20).

3. The flexible power cable with protective function as described in claim 2, characterized in that, The insertion hole (20) extends in an arc shape inside the protective sleeve (2).

4. The flexible power cable with protective function as described in claim 2, characterized in that, The diameter of the plug hole (20) is R1, and the outer diameter of the cable body (1) is R2. R1 and R2 satisfy: R1=k*R2, where k is 1.05~1.

2.

5. The flexible power cable with protective function as described in claim 2, characterized in that, The protective sleeve (2) is made of elastic material; the two ends of the plug hole (20) are respectively provided with an insertion port (201) and a through port (202), and the inner wall of the plug hole (20) near the through port (202) is provided with an annular limiting part (203). The minimum inner diameter of the annular limiting part (203) is R3, the diameter of the plug hole (20) at other positions other than the annular limiting part (203) is R1, and the outer diameter of the cable body (1) is R2. R1, R2 and R3 satisfy: R1=k1*R2, R3=k2*R2, k1 is 1.05~1.2, k2 is 0.9~1.

6. The flexible power cable with protective function as described in claim 5, characterized in that, In the direction from the insertion port (201) toward the outlet (202), the cross-section of the annular limiting part (203) has a slope-shaped structure with a gradually decreasing inner diameter.

7. The flexible power cable with protective function as described in claim 1, characterized in that, The first contact surface (211) and the second contact surface (221) intersect, and a sharp corner is formed at the intersection of the first contact surface (211) and the second contact surface (221); or, the first contact surface (211) and the second contact surface (221) are connected by an arc surface (23).

8. The flexible power cable with protective function as described in claim 1, characterized in that, The first contact surface (211) is provided with a first adhesive layer (24), and the second contact surface (221) is provided with a second adhesive layer (25).

9. The flexible power cable with protective function as described in claim 8, characterized in that, The first adhesive layer (24) has a first release film layer (241) on its surface, and the second adhesive layer (25) has a second release film layer (251) on its surface.

10. The flexible power cable with protective function as described in claim 1, characterized in that, The included angle (a) between the first contact surface (211) and the second contact surface (221) is greater than 90° and less than or equal to 120°; the protective sleeve (2) also includes a thickening pad (26), which is a wedge-shaped structure; the thickening pad (26) is used to fit and connect with the first contact surface (211) and / or the second contact surface (221) to change the installation adaptation angle of the protective sleeve (2).

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