WO2015096212A1

WO2015096212A1 - Self-clamping flat cable

Info

Publication number: WO2015096212A1
Application number: PCT/CN2014/070358
Authority: WO
Inventors: 黄冬莲
Original assignee: 深圳市联嘉祥科技股份有限公司
Priority date: 2013-12-25
Filing date: 2014-03-14
Publication date: 2015-07-02
Also published as: CN104751970B; CN104751970A

Abstract

A self-clamping flat cable, comprising a wire. The wire comprises an insulating layer and at least one conductor covered inside the insulating layer. A snap-fitting portion is provided on the insulating layer along the longitudinal direction of the wire. The self-clamping flat cable also comprises a fixing device used for fixing the wire. A matching portion fixedly matching the snap-fitting portion is provided on the fixing device. The snap-fitting portion is provided on the wire, and the matching portion fixedly matching the snap-fitting portion is provided on the fixing device so that the wire and the fixing device can be fixed by snap-fitting the snap-fitting portion and the matching portion. If a wire is to be installed in a narrow gap, the self-clamping flat cable passes through the narrow gap, and since the fixing device consists of an elastic fixing strip, the wire can be fixed in the narrow gap via the tensioning effect of the fixing strip, thereby preventing the wire from being freely pulled, and ensuring safe usage of the wire. The present invention can be applied to a variety of wires and wiring, is elegant in appearance, and easy to construct.

Description

Self-card type flat cable

Technical field

The present invention relates to the field of wire technology, and more particularly to a self-card type flat cable.

Background technique

With the development of the power industry, data communication industry, urban rail transit industry, etc., the requirements for electric wires in various industries are getting higher and higher. In use, it is necessary to avoid not only mechanical damage, insulation damage, insulation aging and deterioration of the cable, but also When it is worn in a narrow gap, since the common electric wire has a circular cross section, it is difficult to apply to the environmental requirements of the narrow gap; on the other hand, various existing wires are generally used by a threading pipe during installation. Fixed for safety and aesthetics. However, when installed in a narrow gap, the wire is freely pulled and not fixed due to limited space, which affects the safety of the wire.

Summary of the invention

The technical problem to be solved by the present invention is to provide a self-card type flat cable that can be fixed in a narrow gap in view of the above-described drawbacks of the prior art that it is difficult to fix when installing an electric wire in a narrow gap.

The technical solution adopted by the present invention to solve the technical problem thereof is: A self-card type flat cable comprising an electric wire, the electric wire comprising an insulating layer and at least one conductor covered in the insulating layer, wherein the insulating layer is provided with a locking portion along a length direction of the electric wire, Card flat cable also includes A fixing device for fixing the electric wire, wherein the fixing device is provided with a fitting portion that is fixedly engaged with the engaging portion.

In the self-card type flat cable according to the present invention, the fixing device includes a fixing rubber strip, and the fitting portion is provided The fixing strip is adjacent to a side of the electric wire.

In the self-card type flat cable according to the present invention, the engaging portion is a groove, the engaging portion is a projection, and the electric wire and the fixing device The detachable connection is achieved by the cooperation of the groove and the projection.

In the self-card type flat cable according to the present invention, the cross section of the engaging portion is a trapezoidal groove extending inwardly from the outer surface of the insulating layer.

In the self-card type flat cable according to the present invention, The engaging portion is a protrusion, and the engaging portion is a groove, and the electric wire and the fixing device are detachably connected by the cooperation of the protrusion and the groove.

In the self-card type flat cable according to the present invention, the engaging portion is a trapezoidal protrusion having a cross section which is tapered toward an outer surface of the insulating layer.

In the self-card type flat cable according to the present invention, the fixing strip is attached to the side of the electric wire to which an adhesive layer and a protective film for protecting the adhesive layer are attached.

In the self-card type flat cable according to the present invention, the plurality of conductors are plural, and the plurality of conductors are spaced apart from each other in the insulating layer and electrically insulated from each other by the insulating layer.

In the self-card type flat cable according to the present invention, the fixing strip is made of polyvinyl chloride, EPDM or polyethylene. .

In the self-card type flat cable according to the present invention, the electric wire is a flat electric wire.

The self-card type flat cable embodying the present invention has the following beneficial effects: By providing an engaging portion on the electric wire, a fixing portion fixedly engaged with the engaging portion is provided on the fixing device, and the electric wire and the fixing device are fixed by the engagement of the engaging portion and the engaging portion. When the wire is installed in a narrow gap space, the self-card type flat cable passes through the narrow gap together, and the fixing device is composed of an elastic fixing rubber strip, and the fixing rubber strip is tightened. The function is to fix the electric wire in the slit, thereby preventing the free pulling of the electric wire, ensuring the safety of the electric wire, and the various wires are beautifully arranged and convenient for construction.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a cross-sectional view of an electric wire in a self-card type flat cable according to a preferred embodiment of the present invention;

2 is a schematic structural view of a fixing device in a self-card type flat cable according to a preferred embodiment of the present invention.

detailed description

In order to solve the defect that the electric wire is installed in a narrow gap in the prior art, the electric wire is not easy to be fixed and can only be freely pulled. The present invention is provided by fixing a fixing strip which can be fixedly connected with the electric wire, and fixing the rubber strip and the electric wire. The combination acts to secure the wires.

For a better understanding of the technical features, objects and effects of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, a self-card type flat cable provided by a preferred embodiment of the present invention includes an electric wire 1 and a fixing device 2 for fixing the electric wire 1, through The detachable connection of the electric wire 1 and the fixing device 2 secures the electric wire 1.

The electric wire 1 includes an insulating layer 11 and at least one conductor 12 covered in the insulating layer 11.

The conductor 12 is made of a bare copper soft conductor or a metallized layer annealed copper conductor, and is formed by twisting a plurality of conductor monofilaments. Specifically conductor 12 A plurality of conductor monofilaments twisted together, wherein the conductor monofilament is a softened bare copper wire, a tinned copper wire or a silver plated copper wire. The bare copper wire, the tinned copper wire or the silver-plated copper wire are all made of high-purity oxygen-free copper, and the electrical and mechanical properties are extremely excellent. conductor 12 is a round conductor or a flat conductor to meet the needs of different places of use. For example, when wire and cable are to be installed inside a thin wall, a flat conductor 12 with a thin thickness is used.

The conductor 12 can be one or more, and can be determined as needed. When the conductor 12 is a plurality of conductors, the plurality of conductors 12 The spacers are disposed in the insulating layer 11 and electrically insulated from each other by the insulating layer 11, that is, the insulating layer 11 is filled between the conductors 12 adjacent to each other so that the adjacent conductors 12 Electrically insulated. Specifically, in the present embodiment, the number of the conductors 12 is six, and the six conductors 12 are arranged at equal intervals from each other and arranged in a line. It can be understood that the conductor 12 The number of the conductors is not limited, and the conductors 12 may be arranged in other shapes such as a triangle, a square, or the like.

The insulating layer 11 is made of a highly insulating cable material to meet the withstand voltage requirements of the cable and protect the internal conductor 12 from damage. 11 is wrapped around all conductors 12 and is used to electrically isolate adjacent two conductors 12 . When there are a plurality of conductors 12, the insulating layer 12 is provided with inner holes spaced apart from each other, and the number and size of the inner holes and the conductors 12 is completely matched so that the conductors 12 are inserted one by one in the inner holes of the insulating layer 12, thereby electrically insulating the conductors 12. The insulating layer 11 is made of polyvinyl chloride, polyvinylidene fluoride, Made of at least one material of ethylene propylene rubber.

The insulating layer 11 is opened along the length of the wire and has a certain length The engaging portion 111 is provided with a fitting portion 21 fixedly engaged with the engaging portion 111, and the electric wire 1 and the fixing device 2 are detachably fixed by the fixing cooperation of the engaging portion 111 and the fixing portion 21. The connection ensures that the electric wire 1 is fixed in a narrow gap space, and the use of the electric wire 1 is protected. In this embodiment, the fixing device 2 includes a fixing strip 22, and the engaging portion 21 is fixedly disposed on the fixing strip 22 Adjacent to the side of the electric wire 1 to detachably connect the engaging portion 111 and the engaging portion 21 Moreover, by fixing the fixing strip 22 in a narrow gap, the fixing of the electric wire 1 in the narrow gap is realized, and the use of the electric wire is ensured. Specifically, the engaging portion 21 is a protrusion fixed to the fixing strip 22 or a recess formed by the fixing strip 22 inwardly recessed.

The engaging portion 111 is a protrusion or a groove having a certain length formed on the insulating layer 11 . When the engaging portion 111 is a protrusion, the engaging portion 21 is a groove, and the wire 1 and the fixing device 2 are detachably connected by the engagement of the protrusion and the groove. Specifically, the engaging portion 111 is a trapezoidal protrusion having a cross section which is tapered toward the outer surface of the insulating layer 11. The engaging portion 21 is formed by the fixing strip 22 being recessed toward the inner side thereof, and the cross section of the engaging portion 21 is self. The outer surface of the fixing strip 22 has a trapezoidal groove extending inwardly and inwardly, and the fixing of the electric wire 1 and the fixing strip 22 is achieved by engaging the engaging portion 21 into the engaging portion 111. When the engaging portion 111 is a groove, the engaging portion 21 is a protrusion, and the wire 1 and the fixing device 2 are detachably connected by the engagement of the groove and the protrusion. Specifically, the cross section of the engaging portion 111 is a trapezoidal groove extending inwardly from the outer surface of the insulating layer 11. The engaging portion 21 is a trapezoidal protrusion having a cross section which is tapered toward the outer surface of the fixing strip 22, and passes through The engaging portion 111 is engaged in the engaging portion 21 to fix the electric wire 1 and the fixing rubber strip 22 . Further, the shape of the groove is not limited to a trapezoid, and may be a dovetail groove or a sawtooth groove.

On the other hand, when the engaging portion 111 is a groove, the depth of the groove is limited to the thickness of the insulating layer 11, that is, the depth of the groove cannot exceed the insulating layer. The thickness of 11 is to avoid damage to the conductor 12 in the insulating layer 11 to ensure normal power transmission of the wire 1; if the depth of the groove exceeds the thickness of the insulating layer 11, a part of the groove is opened in the conductor 12 On the top, the conductor 12 is damaged, thereby affecting the transmission of electricity.

It can be understood that the length and the number of the engaging portion 111 and the engaging portion 21 can be increased or decreased as needed, and are not limited herein. For example, the engaging portion 111 may be a protrusion or a groove extending through the longitudinal direction of the electric wire 1 and fixedly engaged with the corresponding fitting portion 21. Since the self-card type flat cable is used in a narrow space, the fixing strip 22 is generally elongated in order to reduce the occupied space. Of course, the fixing strip 22 can also be designed to be trapezoidal, square or other irregular shapes according to the structure of the gap space.

The fixing strip 22 is long and made of elastic material such as rubber. For example, the fixing strip is made of polyvinyl chloride and EPDM. Or polyethylene parts, with a certain elasticity and tension, can be squeezed tightly in a narrow gap, and when the surrounding of the narrow gap is damaged by external force, the fixing strip 22 will not be damaged, thereby protecting the wire 1 Free from damage. In the self-card type flat cable of the present invention, the fixing strip 22 is fixed to the electric wire 1 by the engagement of the engaging portion 111 and the engaging portion 21, and then the combined fixing strip 22 is assembled. It is fixed together with the electric wire 1 in a small gap. Since the fixing rubber strip 22 is made of an elastic material and is fastened and fixed in a narrow gap, the electric wire 1 is also fixed, thereby ensuring the safety of the electric wire 1. When the wire 1 When the gap is long and the gap to be passed is also long, in order to fix the wire 1 in the slit, the length of the fixing strip 22 should be equal to the length of the wire 1 placed in the slit.

In another embodiment, the side of the fixing strip 22 away from the electric wire 1 is bonded with an adhesive layer and a protective film for protecting the adhesive layer, and the adhesive layer is attached to the fixing strip 22 away from the electric wire 1 The side, that is, the adhesive layer is disposed on the opposite side of the mating portion 21, and the adhesive layer can be adhered to the adherend such as a wall; the outer side of the adhesive layer is further provided with a protective layer and can be peeled off. The protective film protects the inner bonding layer from contamination when the fixing strip 22 is not used. In the fixing strip 22 of the embodiment, since the adhesive layer and the protective film are disposed on one side thereof, the self-card type flat cable can be fixed not only in a narrow gap but also in an open environment, such as being fixable. On the wall, when it is used, it is only necessary to tear off the protective film and then bond it to the wall through the adhesive layer, thereby realizing the fixing of the electric wire 1, which is convenient, quick and beautiful, and is also advantageous for construction.

In the self-card type flat cable of the present invention, by providing the engaging portion 111 on the electric wire 1, the fixing portion 2 is provided with a fitting portion 21 fixedly engaged with the engaging portion 111, and the card passing through the engaging portion 111 and the fitting portion 21 Combined Removably connect the wire 1 and the fixture 2 When the wire is installed in the narrow gap space, the self-card type flat cable passes through the narrow gap together, since the fixing device 2 is composed of the elastic fixing strip 22, through the fixing strip 22 The tightening action fixes the electric wire 1 in the slit, prevents the free pulling of the electric wire 1, ensures the safety of the electric wire 1, and is elegant and convenient for construction when the various electric wires 1 are wired.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Claims

A self-card type flat cable comprising an electric wire (1), the electric wire (1) comprising an insulating layer (11) and covering the insulating layer (11) At least one conductor (12) in the inner layer, wherein the insulating layer (11) is provided with an engaging portion along the length direction of the electric wire (1) (111) The self-card type flat cable further includes a fixing device (2) for fixing the electric wire (1), and the fixing device (2) is provided with a fitting that is fixedly engaged with the engaging portion (111) Department (21 ).
The self-card type flat cable according to claim 1, wherein the fixing device (2) comprises a fixing strip (22), and the fitting portion (21) ) is disposed on a side of the fixing strip ( 22 ) adjacent to the electric wire ( 1 ).
The self-card type flat cable according to claim 2, wherein the engaging portion (111) is a groove, and the fitting portion (21) As a projection, the electric wire (1) and the fixing device (2) are detachably connected by the cooperation of the groove and the projection.
The self-card type flat cable according to claim 3, wherein the engaging portion (111) has a cross section from the insulating layer (11) The outer surface is a trapezoidal groove that extends inwardly and gradually.
The self-card type flat cable according to claim 2, wherein the engaging portion (111) is a protrusion, and the fitting portion (21) As a groove, the electric wire (1) and the fixing device (2) are detachably connected by the cooperation of the protrusion and the groove.
The self-card type flat cable according to claim 5, wherein the engaging portion (111) has a cross section facing the insulating layer (11) a trapezoidal protrusion with a tapered outer surface.
The self-card type flat cable according to claim 2, wherein the fixing strip (22) is away from the electric wire (1) One side is bonded with an adhesive layer and a protective film for protecting the adhesive layer.
The self-card type flat cable according to claim 1, wherein said conductor (12) is a plurality of conductors (12) The spacers are disposed in the insulating layer (11) and electrically insulated from each other by the insulating layer (11).
The self-card type flat cable according to claim 2, wherein the fixing strip (22) ) is made of polyvinyl chloride, EPDM or polyethylene.
A self-card type flat cable according to claim 1, wherein said electric wire (1) is a flat electric wire.