WO2015021762A1

WO2015021762A1 - Retractable power supply cable

Info

Publication number: WO2015021762A1
Application number: PCT/CN2014/072243
Authority: WO
Inventors: 陈正明; 张文永; 吴剑凯
Original assignee: 金华市春光橡塑软管有限公司
Priority date: 2013-08-13
Filing date: 2014-02-19
Publication date: 2015-02-19
Also published as: CN103413601A

Abstract

Retractable power supply cables, comprising supports (1), a covering (2) and at least two conductors (3); the supports (1) consist of ribs folded along the length direction of the cables; the covering (2) consists of sheet-like soft plastic pieces utilizing the supports as a frame and folding in the same direction; an accommodation cavity (23) accommodating the at least two conductors (3) therein is provided in the middle of the cross section of the sheet-like soft plastic pieces; a left wing (21) and a right wing (22) respectively extend from the two sides of the cross section; with the covering (2) folded, the edges of a neighboring left wing (21) and right wing (22) seal together; and when the cables are in a retracted state, the neighboring left wing (21) and right wing (22) are folded together to form an internal coiled folded wall inside the supporting frame. The cables are not only easily and freely retractable like existing retractable cables, but also are not subject to wear and tear and are easy to clean due to the covering being uniformly arranged between the pieces of the spiral supporting frame, and folded within the supporting frame; in addition, the retractable cables are provided with effective double-layer protection, ensuring safer and more reliable power supply.

Description

A retractable electric hose

The present application claims priority to Chinese Patent Application No. 2013-1036245, filed on Aug. Technical field

The invention relates to a telescopic hose, in particular to a telescopic energizing hose, belonging to the technical field of hoses. Background technique

The existing retractable plastic hose is made of a wire rib of a plastic-coated steel wire as a skeleton, and the soft plastic is made as a hose outer layer by a winding process, and usually has only a telescopic function.

U.S. Patent No. 7,735,523 discloses a retractable energized hose comprising a support member, a cover member, a set of wires, and a support member formed by a strip of material spaced apart along the long axis. The cover member is comprised of a thermoplastic material covering the spacer and a portion of the support member and is folded outwardly in the spaced regions with the wires between the layers of thermoplastic material. The utility model has the advantages that the power supply from one end of the hose to the other end can be properly solved without affecting the original flexible and flexible performance of the hose, thereby satisfying the use requirements of a vacuum cleaner or the like that supplies power to the power source via the hose.

However, the above prior art has obvious disadvantages: First, the covering member is folded outward in the spacing area, so that it is easily worn during use; second, the folding portion is dirty and difficult to clean; and the third is outside the multi-wire conductor. The coating of the layer, the wall thickness is limited by the expansion and contraction function, and there is a risk of short circuit. In addition, the prior art structure only has a low power power-on function, for example, the support member is composed of two copper-plated steel wires as a current-carrying conductor, etc., and when used for powering a larger power, the safety standard cannot be met.

Chinese Patent Application No. 200920045797.1 discloses a retractable energized hose comprising a hose body, the tube wall of which forms an inwardly recessed helical groove, said adjacent groove A spiral wire is placed in the wall between the tubes. The present invention properly solves the problem of supplying power to the hose end electrical appliance while maintaining the original flexibility of the hose, as well as flexibility, bending and the like. However, the hose is made of copper-clad steel support, which can only be used as a signal low-voltage power, and it is still difficult to meet the actual power supply requirements. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a retractable electric hose which is flexible and free from wear and which is easy to clean.

In order to achieve the above object, the retractable energizing hose of the present invention comprises a support member, a covering member and at least two wires. The support member is composed of a rib (usually copper-clad steel wire or steel wire) spirally wound along the length of the hose, and the cover member is composed of a sheet-like soft plastic strip wound in the same direction with the support member as a skeleton. The strip-shaped soft plastic strip has a containment cavity in which at least two wires are surrounded in the middle of the section, and the left and right wings are respectively extended on both sides of the cross-section, and the adjacent left and right-wing edges of the cover member are sealed and sealed; When the hose is in a contracted state, the adjacent left and right wings are folded over each other to form an inner spiral folded wall within the support frame.

Compared with the prior art, the invention not only maintains the function of the existing telescopic hose to be easily and easily stretched, but also has the function of being easy to wear and easy to clean because the covering member is evenly placed between the spiral supporting frames and folded in the supporting frame. And so on. In addition, the present invention can coat two or more wires or plated copper wires into a support skeleton for supporting and energizing, and re-coating the thermoplastic material outside the original wire protection layer, thereby obtaining an effective Double-layer protection makes power supply safer and more reliable.

Further, the containment cavity is located between adjacent two ribs of the spiral coil.

Further, the containment cavity encloses both wires and ribs therein.

Further, the two wires are respectively located on both sides of the rib as a support member and a signal line.

Further, the containment cavity encloses two wires and one of two adjacent ribs therein.

Further, the rib is composed of a metal inner core and a protective layer covering the outer core, and the inner wire is provided with an inner insulating layer. DRAWINGS

The invention will now be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.

Figure 2 is a partially enlarged schematic view of Figure 1.

FIG. 3 is a schematic structural diagram of Embodiment 2 of the present invention.

4 is a schematic structural view of a third embodiment of the present invention. detailed description

Embodiment 1

As shown in FIG. 1 and 2, the retractable electric heating hose of this embodiment comprises a support member 1, a covering member 2 and two wires 3. The support member 1 is composed of copper-clad steel wire ribs spirally wound along the length of the hose. . The covering member 2 is composed of a sheet-like soft plastic strip which is coiled in the same direction with the support member 1 as a skeleton. The sheet-shaped soft plastic strip has a receiving cavity 23 in the middle of the cross section of the strip, and the containing cavity 23 is located in the spiral. Between the adjacent two ribs of the coil, the left wing 21 and the right wing 22 are respectively extended on both sides of the section. The wire 3 has an insulating layer 31 therein. After the covering member 2 is wound, the edges of the adjacent left wing 21 and right wing 22 are sealingly combined. When the hose is in a contracted state, the adjacent left wing 21 and right wing 22 are folded over each other to form a support skeleton. The inner spiral folds the wall. The support member 1 composed of the copper-clad steel wire ribs can simultaneously serve as a signal line. The rib is composed of a metal inner core and a protective layer 11 coated on the outer core, thereby contributing to corrosion prevention of the metal inner core and transmission of electrical signals by means of the metal inner core.

Embodiment 2

The retractable energized hose of this embodiment is shown in Fig. 3. This embodiment is similar to the basic structure of the first embodiment, except that the containment chamber 23 encloses both wires 3 and ribs therein. Two wires 3 are respectively located on both sides of the rib as the support member 1 and the signal line.

Embodiment 3

The retractable energizing hose of this embodiment is shown in Fig. 4. The basic structure is similar to that of the first embodiment, except that the containing chamber 23 encloses two wires 3 and one of the adjacent two ribs therein.

In summary, the above embodiment has the following significant advantages:

1) Not only keeps the telescopic hose freely and easily stretchable, but also because the cover is folded inside the support frame, it is not easy to wear and the surface is easy to clean.

2) Two or more wires or plated (copper) copper wires can be wrapped in the containment cavity between the support frames to form an effective double-layer protection outside the original wire protection layer, so that the power supply is safer and more reliable. Standards such as IEC and UL.

3) The process is practical and cost-effective.

Other than the above-described embodiments, the present invention may have other embodiments. For example, the containment chamber may be covered with three or more energizable wires; for example, the adjacent two ribs may be adjacent to the same spiral, or may be two spirals (ie, similar to double-ended threads). Adjacent relationship. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed in the present invention.

Claims

Rights request

A retractable energized hose comprising a support member, a covering member and at least two wires, the support member being composed of a rib spirally wound along a length of the hose, the covering member being supported by The piece is composed of a sheet-like soft plastic strip coiled in the same direction, wherein: the strip-shaped soft plastic strip has a middle portion of the cross section of the strip having at least two wires surrounded by the left side and the left side of the cross section respectively In the right wing, the adjacent left and right wing edges of the cover member are sealed in a sealed manner; when the hose is in a contracted state, the adjacent left and right wings are folded over each other to form an inner spiral folded wall in the support frame.

2. The retractable energized hose of claim 1 wherein: said containment chamber is located between adjacent two ribs of the spiral coil.

3. The retractable energized hose of claim 1 wherein: said containment chamber encloses both wires and ribs therein.

4. The retractable energized hose according to claim 3, wherein: the two wires are respectively located on both sides of the rib as a support member and a signal line.

5. The retractable energized hose of claim 1 wherein: said containment chamber encloses one of two wires and one of two adjacent ribs.

The retractable energized hose according to any one of claims 1 to 5, wherein: the rib is composed of a metal inner core and a protective layer covering the inner core, and the inner conductive outer layer of the outer layer .