A protective conduit for building electrical cables passing through walls

Abstract

This utility model relates to the field of protective pipe technology and discloses a protective pipe for building electrical cables passing through walls. It includes a pipe body a, a pipe body b placed on one side of pipe body a, and rubber pads a fixedly installed inside both pipe bodies a and b. Wing rings are integrally formed and fixedly installed at the outer ends of both pipe bodies a and b. An annular groove is formed at the inner end of pipe body a, and four sets of equally spaced bead grooves are formed within the annular groove. This utility model, by setting a limiting ring, a pipe body, and a spring, allows for the insertion of pipe bodies a and b through pre-drilled holes in the wall on both sides. Further inward movement with force causes the limiting ring to insert into the annular groove. The semi-circular head then retracts into the limiting groove under force. Once the limiting ring is fully inserted, the spring tension causes the semi-circular head to extend outward and return to its original position, abutting against the corresponding bead groove. Disassembly can be completed by applying force in the opposite direction. Compared to existing methods, this design supports subsequent disassembly, replacement, and maintenance, and the limiting structure is easy to install and remove.

Description

Technical Field

[0001] This utility model relates to the field of protective pipe technology, specifically a protective pipe for building electrical cables passing through walls. Background Technology

[0002] Electrical conduits are typically installed inside protective conduits during installation to protect them. These conduits are also known as airtight wall-penetrating ribs, electrical cable protective conduits, electrical conduits, electrical pre-embedded conduits, rigid combination conduits, and many other names. They are suitable for use when multiple conduits of different or the same diameter are simultaneously inserted into the wall for pre-embedding.

[0003] In the process of realizing this utility model, the inventors discovered the following unresolved problems in the prior art: Although existing protective pipes for building electrical cables passing through walls have the effect of protecting cables by passing through pre-reserved holes, after the electrical wall sleeve passes through the wall, cement is usually poured between the pre-reserved hole in the wall and the sleeve for fixation, which makes it inconvenient to disassemble, repair or replace later. At the same time, the rubber pad at the bottom of the protective pipe is worn a lot due to contact with the cable during use, and the rubber in this area is easily damaged. The existing method cannot replace the part, but requires to replace the entire mechanism, which is costly. Therefore, we propose a protective pipe for building electrical cables passing through walls. Utility Model Content

[0004] The purpose of this utility model is to provide a protective pipe for building electrical cables passing through walls, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective pipe for building electrical cables passing through walls, comprising a pipe body a, a pipe body b placed on one side of the pipe body a, and a rubber pad a fixedly installed inside both the pipe body a and the pipe body b;

[0006] Both tube body a and tube body b have wing rings integrally formed and fixedly installed on their outer ends. The inner end of tube body a has an annular groove, and the annular groove has bead grooves arranged in an equidistant array, with a total of four sets of bead grooves.

[0007] A limiting ring is positioned inside the annular groove, and the limiting ring is fixedly connected to the inside of the tube body b. A limiting groove is formed on the inner side of the limiting ring near the bead groove.

[0008] A limiting plate is fixedly installed in the limiting groove. A T-shaped rod is movably inserted through the middle of the limiting plate. A semi-circular head is fixedly installed at the outer end of the T-shaped rod. The semi-circular head abuts against the bead groove on the same side. A spring is sleeved on the outer side of the T-shaped rod.

[0009] The rubber pad a has a rubber pad b at its bottom, and a wire hole is formed between the rubber pad a and the rubber pad b. The rubber pad b is fixed on the base plate. A locking block is fixedly installed at the bottom of the outer end of the base plate. The tube body a and the tube body b have locking grooves on their outer sides near the locking block. They can be used in conjunction with components such as a limiting ring, the tube body and the spring. During the use of the protective tube, the tube body a and the tube body b can be inserted into the wall through the reserved holes on both sides respectively. Then, force is applied to continue moving inward. The limiting ring is inserted into the annular groove. Then, the semi-circular head is retracted into the limiting groove under force. After the limiting ring is fully inserted, the spring tension causes the semi-circular head to extend outward and return to its original position, and it abuts against the corresponding bead groove. The disassembly can be completed by applying force in the opposite direction. Compared with the existing method, it supports later disassembly, replacement and maintenance, and the limiting structure is easy to disassemble and assemble.

[0010] As an optional solution to the technical solution of this application, grooves are provided on both sides of the outer wall of the card block, and a screw rod is movably inserted through the groove of the card block. The bottom end of the screw rod is screwed into the pre-set threaded groove inside the tube through the external thread. It can be used in conjunction with components such as rubber pad b and card block. Whenever the rubber pad b, which is in contact with the cable and wears a lot, is damaged and needs to be replaced after long-term use, the screw rod can be rotated to separate the screw rod from the threaded groove. Then, force is applied to move the card block outward. The card block drives the base plate and rubber pad b outward. The mechanism for assembling a new rubber pad b is then reversed. This mechanism can replace easily worn parts without replacing the entire tube body, thus reducing the cost of use.

[0011] As an optional solution to the technical solution of this application, an indicator sticker is fixedly installed on the outer wall of the wing ring, and the indicator sticker is fixed by adhesive. The printed text on the indicator sticker can indicate the corresponding disassembly and assembly methods, as well as the partial replacement methods, making it easy to understand and use.

[0012] As an optional solution to the technical solution of this application, the outline of the annular groove is adapted to the shape of the limiting ring, and the outline of the bead groove is adapted to the shape of the semi-circular head, so that the positioning component is adapted to the design, avoiding shaking, tilting or even falling off, and meeting the usage requirements.

[0013] As an optional solution to the technical solution of this application, the two ends of the spring are fixedly connected to the end of the T-shaped rod and the limiting plate, respectively, and the stiffness coefficient of the spring is 100N / mm and the compression is 2.5mm. The stiffness coefficient and compression of the spring are designed appropriately, which makes it easy for personnel to apply force to disassemble and assemble. At the same time, the fixed connection of the spring can prevent it from falling off during use.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model discloses a protective pipe for building electrical cables passing through walls. By setting a limiting ring, a pipe body, and a spring, during the use of the protective pipe, pipe body a and pipe body b are inserted into the pre-drilled holes in the wall on both sides respectively. Then, force is applied to continue moving inward, and the limiting ring is inserted into the annular groove. Subsequently, the semi-circular head is forcefully retracted into the limiting groove. After the limiting ring is fully inserted, the spring tension causes the semi-circular head to extend outward and return to its original position, abutting against the corresponding bead groove. Disassembly can be completed by applying force in the opposite direction. Compared with the existing method, it supports subsequent disassembly, replacement, and maintenance, and the limiting structure is easy to disassemble and assemble.

[0016] 2. This utility model discloses a protective pipe for building electrical cables passing through walls. By setting up a rubber pad b and a locking block, whenever the rubber pad b, which is in contact with the cable and wears out due to long-term use, needs to be replaced, the screw can be rotated to separate the screw from the threaded groove. Then, force is applied to move the locking block outward, which drives the base plate and the rubber pad b outward. The mechanism for assembling a new rubber pad b can be reversed. This mechanism can replace easily worn parts without replacing the entire pipe body, thus reducing the cost of use. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall main cross-sectional structure of a protective conduit for building electrical cables passing through walls according to this utility model;

[0019] Figure 2 This is a side view cross-sectional diagram of the limiting ring portion of a protective conduit for building electrical cables passing through walls according to this utility model;

[0020] Figure 3 This is a side view of the connection between the rubber pad b and the pipe body of a protective pipe for building electrical cables passing through walls, according to this utility model.

[0021] In the diagram: 1. Tube body a; 11. Tube body b; 12. Wing ring; 13. Annular groove; 14. Slot; 15. Threaded groove; 2. Rubber pad a; 21. Rubber pad b; 22. Wire hole; 23. Base plate; 3. Limiting ring; 31. Limiting groove; 32. Semi-circular head; 33. Spring; 34. Limiting plate; 35. T-shaped rod; 4. Locking block; 41. Groove; 42. Screw; 5. Indicator sticker. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figure 1-3This utility model provides a technical solution: a protective pipe for building electrical cables passing through walls, including a pipe body a1, a pipe body b11 placed on one side of the pipe body a1, and rubber pads a2 fixedly installed inside both the pipe body a1 and the pipe body b11; wing rings 12 are integrally formed and fixedly installed at the outer ends of both the pipe body a1 and the pipe body b11, and an indicator sticker 5 is fixedly installed on the outer wall of the wing ring 12, and the indicator sticker 5 is fixed by adhesive. The text printed on the indicator sticker 5 can indicate the corresponding disassembly and assembly methods, as well as the partial replacement methods, for easy understanding and use. An annular groove 13 is opened at the inner end of the pipe body a1, and there are four sets of bead grooves in an equidistant array in the annular groove 13; a limiting ring 3 is positioned in the annular groove 13, and the limiting ring 3 is fixedly connected to the pipe body b11. A limiting groove 31 is opened on the inner side of the limiting ring 3 near the bead groove; a limiting plate 34 is fixedly installed in the limiting groove 31, and a T-shaped rod 35 is movably inserted through the middle of the limiting plate 34, and the outer end of the T-shaped rod 35... A semi-circular head 32 is fixedly installed, abutting against the bead groove on the same side. A spring 33 is sleeved on the outside of the T-shaped rod 35. The two ends of the spring 33 are fixedly connected to the end of the T-shaped rod 35 and the limiting plate 34, respectively. The stiffness coefficient of the spring 33 is 100 N / mm, and the compression is 2.5 mm. The stiffness coefficient and compression of the spring 33 are designed to be moderate, making it easy for personnel to apply force for disassembly and assembly. At the same time, the fixed connection of the spring 33 can prevent it from falling off during use. The bottom of the rubber pad a2 has rubber... A wire hole 22 is formed between the rubber pad b21 and the rubber pad a2. The rubber pad b21 is fixed on the substrate 23. A locking block 4 is fixedly installed at the bottom of the outer end of the substrate 23. The tube body a1 and the tube body b11 are provided with a locking groove 14 on the outer side near the locking block 4. The outline of the annular groove 13 is adapted to the shape of the limiting ring 3, and the outline of the bead groove is adapted to the shape of the semi-circular head 32. The locking assembly is designed to fit the shape, avoiding shaking, tilting or even falling off, which meets the usage requirements.

[0024] In this technical solution, components such as the limiting ring 3, the tube body, and the spring 33 can be used together. During the use of the protective tube, the tube body a1 and the tube body b11 can be inserted into the wall through the reserved holes on both sides respectively. Then, force is applied to continue moving inward. The limiting ring 3 is inserted into the annular groove 13. Then, the semi-circular head 32 is retracted into the limiting groove 31 under force. After the limiting ring 3 is fully inserted, the tension of the spring 33 causes the semi-circular head 32 to extend outward and return to its original position, and it abuts against the corresponding bead groove. Disassembly can be completed by applying force in the opposite direction. Compared with the existing method, it supports later disassembly, replacement, and maintenance, and the limiting structure is easy to disassemble and assemble.

[0025] In some technical solutions, grooves 41 are provided on both sides of the outer wall of the card block 4, and a screw 42 is movably inserted through the groove 41 of the card block 4. The bottom end of the screw 42 is screwed to the threaded groove 15 pre-set in the tube body through the external thread.

[0026] In this technical solution, components such as rubber pad b21 and locking block 4 can be used together. Whenever the rubber pad b21, which is in contact with the cable and wears a lot, is damaged and needs to be replaced after long-term use, the screw 42 can be rotated to separate the screw 42 from the threaded groove 15. Then, force is applied to move the locking block 4 outward. The locking block 4 drives the base plate 23 and the rubber pad b21 outward. The mechanism for assembling a new rubber pad b21 is then reversed. This mechanism can replace easily worn parts without replacing the entire tube body, thus reducing the cost of use.

[0027] Working principle: It should be noted that this utility model is a protective pipe for building electrical cables passing through walls. All components are general standard parts or parts known to those skilled in the art. Its structure and principle can be learned by those skilled in the art through technical manuals or conventional test methods.

[0028] When using a protective conduit for building electrical cables passing through walls, the protective conduit is transported to the area where the building electrical cables pass through the wall. After a pre-drilled hole is made in the wall, the protective conduit is inserted into the pre-drilled hole and its position is limited. Then, the electrical cable is inserted into the wire hole 22 of the protective conduit for wear protection during the use of the electrical cable.

[0029] By incorporating a limiting ring 3, a tube body, and a spring 33, during the use of the protective tube, tube bodies a1 and b11 can be inserted through pre-drilled holes in the wall on both sides. Then, force is applied to continue inward movement until the limiting ring 3 inserts into the annular groove 13. Subsequently, the semi-circular head 32 retracts into the limiting groove 31 under pressure. After the limiting ring 3 is fully inserted, the tension of the spring 33 causes the semi-circular head 32 to extend outward and return to its original position, abutting against the corresponding bead groove. Disassembly can then be completed by applying force in the opposite direction. Compared to existing methods, this design supports subsequent disassembly and assembly. Replacement and maintenance are possible, and the limiting structure is easy to disassemble and assemble. With the rubber pad b21 and the locking block 4, whenever the rubber pad b21, which is in contact with the cable and wears a lot, is damaged and needs to be replaced after long-term use, the screw 42 can be rotated to separate the screw 42 from the threaded groove 15. Then, force is applied to move the locking block 4 outward. The locking block 4 drives the base plate 23 and the rubber pad b21 outward. The mechanism for assembling a new rubber pad b21 is then reversed. This mechanism can replace easily worn parts without replacing the entire tube body, thus reducing the cost of use.

Claims

1. A protection tube for building electrical cable wall penetration, characterized by: It includes a tube body a (1), a tube body b (11) is placed on one side of the tube body a (1), and a rubber pad a (2) is fixedly installed inside both the tube body a (1) and the tube body b (11); Both the outer ends of the tube body a (1) and the tube body b (11) are integrally formed and fixedly installed with wing rings (12). The inner end of the tube body a (1) is provided with an annular groove (13), and the annular groove (13) is provided with bead grooves arranged in an equidistant array, and there are four sets of bead grooves in total. A limiting ring (3) is positioned inside the annular groove (13), and the limiting ring (3) is fixedly connected to the tube body b (11). A limiting groove (31) is opened on the inner side of the limiting ring (3) near the bead groove. A limiting plate (34) is fixedly installed in the limiting groove (31). A T-shaped rod (35) is movably passed through the middle of the limiting plate (34). A semi-circular head (32) is fixedly installed at the outer end of the T-shaped rod (35). The semi-circular head (32) abuts against the bead groove on the same side. A spring (33) is sleeved on the outer side of the T-shaped rod (35). The bottom of the rubber pad a (2) has a rubber pad b (21), and a wire hole (22) is formed between the rubber pad a (2) and the rubber pad b (21). The rubber pad b (21) is fixed on the substrate (23). A card block (4) is fixedly installed at the bottom of the outer end of the substrate (23). The tube body a (1) and the tube body b (11) are provided with a card slot (14) on the outer side near the card block (4).

2. The protection tube for building electrical cable wall penetration according to claim 1, characterized in that: The outer wall of the card block (4) is provided with grooves (41) on both sides. A screw (42) is movably inserted in the groove (41) of the card block (4). The bottom end of the screw (42) is screwed to the threaded groove (15) preset in the tube body through the external thread.

3. The protection tube for building electrical cable wall penetration according to claim 1, characterized in that: An indicator sticker (5) is fixedly installed on the outer wall of the wing ring (12), and the indicator sticker (5) is fixed by adhesive.

4. The protection tube for building electrical cable wall penetration according to claim 1, characterized in that: The outline of the annular groove (13) is adapted to the shape of the limiting ring (3), and the outline of the bead groove is adapted to the shape of the semi-circular head (32).

5. The protection tube for building electrical cable wall penetration according to claim 1, characterized in that: The two ends of the spring (33) are fixedly connected to the end of the T-shaped rod (35) and the limiting plate (34) respectively, and the stiffness coefficient of the spring (33) is 100N / mm and the compression is 2.5mm.

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