Four-layer structure sleeve containing flat filaments and straight filaments

Abstract

The utility model relates to a four-layer structure casing pipe containing flat wires and straight wires. The four-layer structure casing pipe sequentially comprises a lining pipe, the flat wires, a plurality of straight wires and an outer skin layer from inside to outside. Openings are formed in the two ends of the lining pipe and communicate with an inner cavity of the lining pipe. The number of the flat filament is one, one flat filament spirally wraps the outer wall of the lining pipe, the flat filament extends from one end of the lining pipe to the other end of the lining pipe, and the flat filament covers the outer wall of the lining pipe; the plurality of straight filaments are spirally wound on the outer wall of the flat filament in an annular array manner and extend from one end of the flat filament to the other end of the flat filament; the outer skin layer wraps the outer sides of the straight wires in an extrusion molding mode and extends from one ends of the straight wires to the other ends of the straight wires. When the sleeve is used, the control wire harness in the lining pipe is effectively prevented from puncturing the lining pipe and the outer skin layer, and the service life of the sleeve is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of casing processing for brake lines and control lines, especially a four-layer structure casing containing flat wires and straight wires. Background Art

[0002] After the control harness is bent for a long time, the steel wires at the ends of the sleeves are easily scattered, causing the sleeves to be unable to be used normally. Therefore, it is necessary to put plastic sleeves with through holes (to facilitate the steel wires to pass through) at both ends of the sleeves. At present, the plastic sleeves often slip off after being put on.

[0003] Therefore, it is desirable to provide a four-layer structure sleeve containing flat wire and straight wire, which can solve the above-mentioned technical problems. Utility Model Content

[0004] One purpose of the utility model is to provide a four-layer structure casing containing flat wires and straight wires, which can effectively prevent the control wire harness inside the inner liner from piercing the inner liner and the outer skin when in use, thereby effectively improving the service life of the casing.

[0005] A four-layer structural sleeve containing flat wire and straight wire, including an inner liner tube, flat wire, several straight wires and outer skin layers from the inside to the outside;

[0006] Both ends of the liner tube have openings, and both of the openings are in communication with the inner cavity of the liner tube;

[0007] The number of the flat wires is one, and one of the flat wires is spirally wrapped on the outer wall of the inner lining tube, and the flat wire extends from one end of the inner lining tube to the other end of the inner lining tube, and the flat wire covers the outer wall of the inner lining tube;

[0008] Several of the straight wires are spirally wound on the outer wall of the flat wire in an annular array, and extend from one end of the flat wire to the other end of the flat wire;

[0009] The outer skin layer is encapsulated in an extruded manner on the outside of several of the straight wires and extends from one end of the straight wire to the other end thereof.

[0010] Preferably, the liner tube is a transparent liner tube.

[0011] Further, the inner liner is filled with lubricating oil.

[0012] Preferably, both the flat wire and the straight wire are carbon steel wires.

[0013] Preferably, several annular protrusions are provided on both ends of the outer walls of the outer skin.

[0014] Furthermore, the material of the outer skin is polyethylene or polypropylene.

[0015] The utility model has advantages over the prior art: a four-layer structure sleeve containing flat wire and straight wire:

[0016] (1) In the above-mentioned four-layer casing containing flat wires and straight wires, after the control harness is inserted into the inner liner, the casing often needs to be bent during use, and the control harness is still easy to pierce the inner liner. Since the flat wire is completely covered on the outer wall of the inner liner, the control harness will not be exposed outside the outer skin layer, thereby extending the service life of the casing;

[0017] (2) The casing needs to be cut to a fixed length during normal use. By arranging a plurality of straight wire layers between the outer skin layer and the flat wire layer, the casing can be effectively prevented from being excessively elongated when being cut to a fixed length. In addition, the strength of the casing is also improved.

[0018] (3) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a four-layer structure sleeve containing flat wire and straight wire of this embodiment;

[0020] Figure 2 It is a structural diagram of the inner lined tube in this embodiment;

[0021] Figure 3 A structural diagram of the flat wire spiral coated on the inner lined tube in this embodiment;

[0022] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0023] Figure 5 It is a structural diagram of several straight wires, flat wires and lined tube connections in this embodiment;

[0024] Figure 6 It is a structural diagram of a four-layer structure sleeve containing flat wire and straight wire of this embodiment Figure 1 ;

[0025] Figure 7 It is a structural diagram of a four-layer structure sleeve containing flat wire and straight wire of this embodiment Figure 2 . DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Example

[0028] like Figure 1As shown, the four-layer structure sleeve provided by this embodiment includes a flat wire and a straight wire, including an inner liner tube 1 , a flat wire 2 , a number of straight wires 3 and an outer skin layer 4 from the inside to the outside.

[0029] like Figure 2 It is shown that both ends of the liner tube 1 have openings 5 ​​, and both of the openings 5 ​​are in communication with the inner cavity of the liner tube 1 .

[0030] like Figure 3 and Figure 4 The number of the flat wire 2 is one, and one flat wire 2 is spirally wrapped on the outer wall of the inner lining tube 1 , and the flat wire 2 extends from one end of the inner lining tube 1 to the other end of the inner lining tube 1 , and the flat wire 2 covers the outer wall of the inner lining tube 1 .

[0031] like Figure 5 It is shown that several straight wires 3 are spirally wound on the outer wall of the flat wire 2 in an annular array, and extend from one end of the flat wire 2 to the other end of the flat wire 2 .

[0032] like Figure 6 As shown, the outer skin layer 4 is coated on the outside of the plurality of straight wires 3 by extrusion molding, and extends from one end to the other end of the straight wire 3. Specifically, the outer skin layer 4 is made of polyethylene or polypropylene.

[0033] In this embodiment, the liner tube 1 is a transparent liner tube, which facilitates the observation of the internal situation of the liner tube 1 when the control wiring harness is subsequently inserted.

[0034] In this embodiment, the flat wire 2 and straight wire 3 are both carbon steel wires, with high strength, high hardness, good toughness and low cost.

[0035] The above-mentioned four-layer structure sleeve containing flat wires and straight wires, after the control harness is inserted into the inner lining tube 1, the sleeve often needs to be bent during use, and the control harness is still easy to pierce the inner lining tube 1. Since the flat wire 2 is completely covered on the outer wall of the inner lining tube 1, the control harness will not be exposed outside the outer skin layer 4, thereby extending the service life of the sleeve.

[0036] The sleeve needs to be cut to a fixed length during normal use. By arranging a plurality of straight wires 3 between the outer skin layer 4 and the flat wire 2, the sleeve can be effectively restricted from being excessively stretched when being cut to a fixed length. In addition, the strength of the sleeve is also improved.

[0037] When the sleeve is normally used, plastic sleeves need to be inserted at both ends of the sleeve to protect the end of the sleeve. After the plastic sleeve is connected to the sleeve, it will easily fall off after a long time of use; therefore, Figure 7 It is shown that several annular projections 6 are provided on both ends of the outer walls of the outer skin layer 4 to effectively prevent the plastic sleeve from falling off after being plugged into the sleeve.

[0038] In this embodiment, the inner liner tube 1 is filled with lubricating oil to facilitate passing the control wiring harness through the inner liner tube 1 .

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A four-layer casing with flat wires and straight wires, characterized in that: From inside to outside, it includes an inner lining tube, a flat wire, a number of straight wires and an outer skin layer; Both ends of the inner liner tube have openings, and both openings are connected to the inner cavity of the inner liner tube; The number of the flat wires is one, and one of the flat wires is spirally wrapped on the outer wall of the inner lining tube, and the flat wire extends from one end of the inner lining tube to the other end of the inner lining tube, and the flat wire covers the outer wall of the inner lining tube; A plurality of straight wires are spirally wound on the outer wall of the flat wire in a circular array and extend from one end of the flat wire to the other end of the flat wire; The outer skin layer is covered on the outside of the plurality of straight wires by extrusion molding, and extends from one end of the straight wire to the other end thereof; A plurality of annular protrusions are arranged on the outer walls at both ends of the outer skin layer.

2. A four-layer structure sleeve containing flat wires and straight wires as claimed in claim 1, characterized in that: The inner lining tube is a transparent inner lining tube.

3. A four-layer casing with flat wires and straight wires as claimed in claim 2, characterized in that: The inner liner pipe is filled with lubricating oil.

4. A four-layer casing containing flat wires and straight wires as claimed in any one of claims 1 to 3, characterized in that: The flat wires and straight wires are both carbon steel wires.

5. A four-layer structure casing containing flat wires and straight wires as claimed in claim 1, characterized in that: The material of the outer skin layer is polyethylene or polypropylene.

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