Threading pipe with small expansion coefficient

Abstract

The utility model provides a threading pipe with a small expansion coefficient, which comprises a main wire pipe, a plurality of auxiliary wire pipes are uniformly distributed and fixedly mounted in the main wire pipe, and a cross-shaped contraction cavity is formed between each auxiliary wire pipe and the main wire pipe; according to the utility model, through the overall arrangement, when the cable is extruded by the outside, each auxiliary line pipe can contract towards the center of the main line pipe through the contraction cavity, so that a certain deformation space is formed between the auxiliary line pipes, the auxiliary line pipes are prevented from being directly crushed flat, and the whole cable is safer and more reliable; meanwhile, in the threading process, an independent wiring cavity can be provided for each wire harness, multiple wire harnesses are prevented from being wound together, in this way, when a certain wire harness needs to be replaced in the later period, the wire harness can be conveniently and independently drawn out, and therefore the whole wire harness is more convenient and flexible.

Description

Technical Field

[0001] The utility model belongs to the field of wire threading tubes, and in particular relates to a wire threading tube with a small expansion coefficient. Background Art

[0002] A conduit with a small expansion coefficient means that the change in volume or length of the conduit is small when the temperature changes. The expansion coefficient is a physical quantity that describes the degree of change in volume or length of an object when the temperature changes. For a conduit, if its expansion coefficient is small, the size change of the conduit will be relatively small under different temperature environments, which helps to maintain the stability and safety of the wires in the conduit.

[0003] However, during the threading process of the existing threading tube with a small expansion coefficient, multiple wire harnesses need to be threaded into one threading tube at the same time. Since multiple wire harnesses are concentrated in one wire tube, in the later stage, when a wire harness fails and needs to be pulled out and replaced, it will generate greater resistance, thereby affecting the pulling out.

[0004] Therefore, it is very necessary to invent a threading tube with a small expansion coefficient. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a technical solution for a threading tube with a small expansion coefficient: a threading tube with a small expansion coefficient, comprising a main line tube, wherein: a plurality of auxiliary line tubes are evenly distributed and fixedly installed inside the main line tube, and a cross-shaped contraction cavity is formed between each of the auxiliary line tubes and the main line tube.

[0006] Preferably, a plurality of honeycomb holes are evenly distributed on the tube wall of the main line tube.

[0007] Preferably, an elliptical wiring cavity is provided in the secondary line tube, and an arc-shaped plate is fixedly installed on one side of the secondary line tube, with the opening of the arc-shaped plate facing the center of the main line tube.

[0008] Preferably, an elliptical compression cavity is provided at each end of the arc-shaped plate opening.

[0009] Compared with the prior art, the advantages of the utility model are:

[0010] The overall arrangement of the utility model can allow each auxiliary line tube to shrink toward the center of the main line tube through the shrinkage cavity when subjected to external compression, so that there is a certain deformation space between the auxiliary line tubes to prevent the auxiliary line tubes from being directly crushed, thereby making the whole safer and more reliable; at the same time, during the threading process, a separate wiring cavity can be provided for each wire harness to avoid multiple wire harnesses being entangled together, so that when a wire harness needs to be replaced at a later stage, it is easy to pull it out separately, making the whole more convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the secondary line tube structure of the utility model.

[0013] In the figure:

[0014] Main line pipe 1, auxiliary line pipe 2, arc plate 3, elliptical wiring cavity 4, elliptical compression cavity 5, honeycomb hole 6, contraction cavity 7. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0016] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0017] The utility model is further described below in conjunction with the accompanying drawings: Embodiment 1

[0018] Reference Figure 1-2A threading tube with a small expansion coefficient comprises a main line tube 1, wherein: a plurality of auxiliary line tubes 2 are evenly and fixedly installed inside the main line tube 1, and the arrangement of the auxiliary line tubes 2 can prevent a plurality of wire harnesses from being entangled together, and a cross-shaped contraction cavity 7 is formed between each auxiliary line tube 2 and the main line tube 1. Through the arrangement of the contraction cavity 7, when the main line tube 1 is subjected to external pressure, each auxiliary line tube 2 can be contracted toward the center of the main line tube 1 to prevent the auxiliary line tube 2 from being directly crushed, so that in the later stage, when the wire harness needs to be replaced, it is convenient to pull out the damaged wire harness for replacement.

[0019] A plurality of honeycomb holes 6 are evenly distributed on the wall of the main line pipe 1. The arrangement of the honeycomb holes 6 can improve the compression resistance of the main line pipe 1 and reduce the overall weight.

[0020] An elliptical wiring cavity 4 is opened in the secondary line tube 2 to provide a separate wiring channel for the wiring harness, and at the same time has good deformation ability, and an arc plate 3 is fixedly installed on one side of the secondary line tube 2. Through the setting of the arc plate 3, when each secondary line tube 2 shrinks to the limit toward the center of the main line tube 1, the arc plate 3 can have a certain pressure resistance and deformation ability, continue to ensure the strength of each secondary line tube 2, and prevent each secondary line tube 2 from being crushed. The opening of the arc plate 3 faces the center of the main line tube 1.

[0021] An elliptical compression cavity 5 is provided at each end of the opening of the arc plate 3. Through the setting of the elliptical compression cavity 5, after the arc plate 3 is fully compressed, the elliptical compression cavity 5 can shrink to prevent the secondary line tube 2 from being crushed, thereby making the whole have better pressure resistance and deformation resistance.

[0022] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A threading tube with a small expansion coefficient, characterized in that: It comprises a main line pipe (1), wherein: a plurality of auxiliary line pipes (2) are evenly distributed and fixedly installed inside the main line pipe (1), and a cross-shaped contraction cavity (7) is formed between each of the auxiliary line pipes (2) and the main line pipe (1).

2. A threading tube with a small expansion coefficient as claimed in claim 1, characterized in that: A plurality of honeycomb holes (6) are evenly distributed on the wall of the main line pipe (1).

3. A threading tube with a small expansion coefficient as claimed in claim 1, characterized in that: An elliptical wiring cavity (4) is provided in the secondary line tube (2), and an arc-shaped plate (3) is fixedly mounted on one side of the secondary line tube (2), with the opening of the arc-shaped plate (3) facing the center of the main line tube (1).

4. A threading tube with a small expansion coefficient as claimed in claim 3, characterized in that: An elliptical compression cavity (5) is provided at each of the two ends of the opening of the arc-shaped plate (3).

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