Electrical bushing reinforced with internal and external helical stripes

Abstract

The utility model discloses an electrician sleeve with inner and outer helical stripe reinforcement relates to electrician sleeve technical field, and it aims at solving the problem of poor construction stability, big threading resistance, insufficient compressive strength and poor heat dissipation of traditional electrician sleeve. The electrician sleeve includes the body, and the inner side wall and the outer side wall are equipped with helical stripe respectively, and the screw direction can be same or opposite, and the helical angle can be inconsistent. The inner side wall helical stripe is provided with the corrugated structure along the axial direction, and the top edge of the corrugated and helical stripe cross section all adopts the circular arc transition or the circular arc design. The structure increases the compressive strength and the surface area through the inner and outer helical stripe to improve the heat dissipation, and the inner side design reduces the wire contact area and the friction, reduces the threading resistance and protects the wire, and the outer side stripe enhances the bonding force with the building material, prevents the construction displacement, avoids the cement slide when vertically laying, improves the construction efficiency and the use safety.

Description

Technical Field

[0001] This utility model relates to the field of electrical conduit technology, specifically to an electrical conduit reinforced with internal and external spiral stripes. Background Technology

[0002] Electrical conduits (especially those used for wiring) are widely used in building electrical installation, municipal engineering, and indoor pipeline pre-installation due to their advantages such as light weight, corrosion resistance, and low cost. The core function of these conduits is to provide a protective channel for electrical wires, while also meeting the requirements of ease of construction, structural stability, and long-term safety. In existing technologies, traditional plastic electrical conduits mostly employ a design with smooth inner and outer walls. However, in actual construction and application, this type of structure has many limitations: From the perspective of construction stability, traditional electrical conduits have smooth outer walls, resulting in weak adhesion to building materials such as concrete and mortar. During pre-embedding construction, the conduits are prone to displacement due to concrete vibration, material shrinkage, or wall settlement, leading to pipeline misalignment and affecting the accuracy of subsequent wire installation and equipment connection. When laid vertically, the smooth outer walls make it difficult for cement and other filling materials to adhere, easily causing cement to slip, increasing the difficulty of construction and cleaning, and reducing construction efficiency. In terms of wire threading, traditional conduits have smooth inner walls, resulting in a large contact area between the wire and the conduit wall and high friction during the threading process. Especially when threading long distances or multiple wires in parallel, this not only requires greater manpower but also easily leads to wear and tear on the wire insulation due to friction, posing a safety hazard. At the same time, the smooth inner wall lacks a guiding structure, making it easy for the wire to deviate and become tangled inside the conduit, further increasing the threading resistance. From a structural performance perspective, traditional smooth-structured electrical conduits have limited compressive strength. When subjected to concrete curing pressure, wall loads, or external impacts, they are prone to deformation or even breakage, resulting in a reduction in the diameter of the conduit and affecting the installation of wires and subsequent maintenance. In addition, the smooth inner and outer wall surfaces have a small surface area and poor heat dissipation performance. When the wires inside the conduit generate heat during operation, heat is easily accumulated, accelerating the aging of the electrical conduit and shortening its service life.

[0003] Therefore, in view of the shortcomings of traditional electrical conduits in terms of construction stability, ease of wiring, structural strength and heat dissipation performance, there is an urgent need to develop a new type of electrical conduit structure that can take into account the optimization of multiple aspects of performance. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an electrical conduit with internal and external spiral stripe reinforcement.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an electrical conduit reinforced with inner and outer spiral stripes, comprising an electrical conduit body, wherein the inner sidewall and the outer sidewall of the electrical conduit body are respectively provided with inner sidewall spiral stripes and outer sidewall spiral stripes, the spiral directions of the inner sidewall spiral stripes and the outer sidewall spiral stripes being the same or opposite.

[0006] The pitch of the spiral stripes on the inner wall and the spiral stripes on the outer wall can be adjusted according to actual needs during the actual processing.

[0007] Furthermore, the spiral stripes on the inner wall of the electrical conduit body are configured as a corrugated structure along the axial direction of the electrical conduit body.

[0008] Furthermore, the corrugated structure of the inner wall of the electrical conduit body is all set as a rounded edge structure.

[0009] Furthermore, the top edge of the spiral stripe cross-section of the inner wall of the electrical conduit body is rounded, or the top of the spiral stripe cross-section is set as an arc.

[0010] Furthermore, the spiral angles of the spiral stripes on the inner and outer walls of the electrical conduit body are inconsistent.

[0011] Furthermore, the spiral stripes on the inner wall and / or the spiral stripes on the outer wall are arc-shaped or triangular.

[0012] Furthermore, the circumferential spacing of the spiral stripes on the inner wall and / or the spiral stripes on the outer wall is either equal or unequal.

[0013] Furthermore, the number of spiral stripes on the outer sidewall is 15-40 stripes, and the number of spiral stripes on the inner sidewall is 30-60 stripes.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides an electrical conduit with internal and external spiral stripe reinforcement, which has the following beneficial effects: The inner and outer spiral stripe design of the electrical conduit effectively increases the conduit's compressive strength, minimizes deformation during bending, allows for a larger diameter, and reduces wire pulling resistance. The inner spiral stripe design reduces the contact area between the wire and the conduit's interior during wiring, significantly reducing friction and labor intensity. The outer spiral stripe design increases friction between the wall / cement and the conduit, preventing slippage during construction and facilitating easier wire pulling. When laid vertically, it effectively prevents cement from falling to the ground, making construction more convenient. Furthermore, the inner and outer spiral stripes increase the surface area of ​​the conduit's inner and outer walls, improving heat dissipation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the electrical conduit structure of this utility model; Figure 2 This utility model Figure 1 A magnified view of the structure of part A in the diagram; Figure 3 This is a schematic diagram of the arc edge structure of the spiral stripes on the inner wall of this utility model; In the diagram: 1. Electrical conduit body; 2. Spiral stripes on the inner wall; 3. Spiral stripes on the outer wall; 5. Rounded edge structure. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-3 The present invention is an electrical conduit with internal and external spiral stripes, comprising an electrical conduit body 1, wherein the inner sidewall and the outer sidewall of the electrical conduit body 1 are respectively provided with inner sidewall spiral stripes 2 and outer sidewall spiral stripes 3, the spiral directions of the inner sidewall spiral stripes 2 and the outer sidewall spiral stripes 3 are the same or opposite. By pre-processing spiral grooves matching the spiral stripes on the inner and outer surfaces of the pipe extrusion die, corresponding spiral protrusions, i.e., spiral stripes, are formed on the inner and outer walls of the pipe as the molten plastic passes through the die. The uniform distribution design is achieved through the equiangular distribution of the grooves on the die, ensuring balanced stress on the pipe. The inner and outer spiral stripe design effectively increases the pipe's compressive strength, minimizes deformation during bending construction, allows for a large diameter, and reduces resistance during threading.

[0018] As a preferred embodiment of the above, the spiral stripes 2 on the inner sidewall of the electrical conduit body 1 are configured as a corrugated structure along the axial direction of the electrical conduit body 1. Periodic corrugations are machined at the bottom of the spiral groove inside the mold. The period of the corrugations is matched with the pitch of the spiral stripes to ensure that the corrugations are continuously distributed along the spiral direction. During molding, the molten plastic fills the groove and corrugated structure, and after cooling, it forms a corrugated spiral stripe. The corrugated guide strips on the inner wall can effectively reduce the contact area between the wire harness and the pipe, thereby reducing friction and making the wire harness threading smoother, improving construction efficiency. The corrugated structure has good elastic deformation ability, which can adapt to wire harnesses of different diameters, avoid jamming caused by size mismatch, and improve the flexibility of use.

[0019] As a preferred embodiment of the above embodiments, the corrugated structure of the inner wall of the electrical conduit body 1 is all set as a rounded edge structure 5; All edges and corners of the corrugated structure on the mold are rounded to ensure that the finished corrugated edges have no sharp parts and a smooth surface. The rounded edge structure 5 avoids scratching the wires by the sharp corners of the corrugated structure, further protecting the wire insulation layer and making wire pulling smoother.

[0020] As a preferred embodiment of the above, the top edge of the spiral stripe cross-section of the inner sidewall of the electrical conduit body 1 is rounded or the top of the spiral stripe cross-section is set as an arc. If a rounded corner transition is used, the two sides of the top of the mold stripe are processed into rounded arcs; if a rounded top is used, the top of the mold stripe is processed into a convex rounded arc surface, ensuring that there are no burrs or depressions on the top after molding. This design reduces the contact area between the wire and the inside of the conduit during the wiring process, significantly reducing wiring friction, reducing manual labor intensity, and preventing sharp parts from scratching the wire.

[0021] As a preferred embodiment of the above, the spiral angles of the inner wall spiral stripes 2 and the outer wall spiral stripes 3 of the electrical conduit body 1 are not the same. By deliberately setting the difference in spiral angle between the inner and outer spiral stripes 3, the electrical conduit can simultaneously optimize multiple performance indicators in different application scenarios, avoiding performance conflicts caused by a single spiral angle design.

[0022] Furthermore, the inner wall spiral stripes 2 and / or the outer wall spiral stripes 3 are arc-shaped or triangular. The circumferential spacing of the inner wall spiral stripes 2 and / or the outer wall spiral stripes 3 is equal or unequal. Preferably, the number of outer wall spiral stripes 3 is 15-40 stripes, and the number of inner wall spiral stripes 2 is 30-60 stripes.

[0023] benefit: Improve compressive strength: The different inner and outer helical angles form a cross-support structure, which can disperse and offset external pressure, significantly enhancing the radial pressure resistance of the pipeline, and is especially suitable for deep burial or high-load environments.

[0024] Reduce threading resistance: The angle of the inner spiral stripes can be optimized according to the direction of threading (such as using a larger lead angle) to reduce the contact area and friction coefficient between the wire and the inner wall, and significantly reduce the drag resistance when threading long distances.

[0025] Enhance structural stability: The angle of the outer spiral stripes can be independently designed to match the shrinkage characteristics of filling materials such as concrete, forming a mechanical interlocking effect that effectively resists displacement and deformation during construction.

[0026] Optimize heat dissipation path: The intersecting patterns formed by different spiral angles increase the length and surface area of ​​the heat conduction path, while creating a turbulence effect inside the pipe, improving air convection efficiency and accelerating heat dissipation.

[0027] Adaptable to complex working conditions: For example, in curved laying scenarios, specific angle combinations can ensure that the pipe maintains uniform structural strength in the curved section, avoiding the risk of cracking caused by stress concentration.

[0028] Furthermore, the pitch of the spiral stripes 2 on the inner wall and the spiral stripes 3 on the outer wall of the electrical conduit of this utility model can be selected and designed according to actual needs.

[0029] The working principle of this utility model of an electrical conduit reinforced with internal and external spiral stripes is as follows: The electrical conduit of this utility model, by setting the inner wall spiral stripes 2 and the outer wall spiral stripes 3 on the conduit body 1, and designing the inner wall spiral stripes 2 with a corrugated structure, a rounded edge structure 5, a rounded corner transition or a rounded top, etc., makes the electrical conduit have the advantages of high compressive strength, low resistance to wire pulling, smooth wire pulling, adaptability to wire harnesses of different diameters, less slippage of the conduit during construction, prevention of cement falling when laid vertically, and good heat dissipation, thus solving many problems existing in traditional electrical conduits.

[0030] 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. An electrical conduit with internal and external spiral stripe reinforcement, comprising an electrical conduit body (1), characterized in that, The inner wall and outer wall of the electrical conduit body (1) are respectively provided with inner wall spiral stripes (2) and outer wall spiral stripes (3), and the spiral directions of the inner wall spiral stripes (2) and outer wall spiral stripes (3) are the same or opposite.

2. The electrical conduit with internal and external spiral stripe reinforcement according to claim 1, characterized in that, The spiral stripes (2) on the inner wall of the electrical conduit body (1) are arranged in a corrugated structure along the axial direction of the electrical conduit body (1).

3. The electrical conduit with internal and external spiral stripe reinforcement according to claim 2, characterized in that, The corrugated structure of the inner wall of the electrical conduit body (1) is set as a rounded edge structure (5).

4. The electrical conduit with internal and external spiral stripe reinforcement according to claim 3, characterized in that, The top edge of the spiral stripe (2) cross-section of the inner wall of the electrical conduit body (1) is rounded or the top of the spiral stripe cross-section is set as an arc.

5. An electrical conduit with internal and external spiral stripe reinforcement according to any one of claims 1-4, characterized in that, The spiral angles of the inner wall spiral stripes (2) and the outer wall spiral stripes (3) of the electrical conduit body (1) are inconsistent.

6. An electrical conduit with internal and external spiral stripe reinforcement according to any one of claims 1-4, characterized in that, The inner wall spiral stripes (2) and / or the outer wall spiral stripes (3) are arc-shaped or triangular.

7. An electrical conduit with internal and external spiral stripe reinforcement according to any one of claims 1-4, characterized in that, The circumferential spacing of the inner wall spiral stripes (2) and / or the outer wall spiral stripes (3) is either equal or unequal.

8. An electrical conduit with internal and external spiral stripe reinforcement according to any one of claims 1-4, characterized in that, The number of spiral stripes (3) on the outer sidewall is 15-40 stripes, and the number of spiral stripes (2) on the inner sidewall is 30-60 stripes.

Images