TWI629395B - Cord - Google Patents

Abstract

The present invention provides a wire comprising a first axis and at least one spiral, the spiral being spirally wound on the surface of the first axis with the first axis as an axis; wherein the diameter of the spiral is not greater than the diameter of the first axis, And the diameter of the spiral is greater than 0.5 mm. Thereby, the wire of the present invention can maintain high tensile strength while having high toughness.

Description

Wire

The present invention relates to a wire for passing through pipes or other narrow passages in a building.

The threader can be used to guide cables or the like through pipes or other narrow passages in the building. In order to smoothly pass through the long and narrow pipes, the wire used for the threader must not only have sufficient compressive and tensile strength to load. Resistance from the friction of the pipe, etc., and also has good flexibility to pass through the bent pipe.

In the past, the commonly used wires were made of glass fiber or metal wire, and the outer layer was covered with plastic. Although these wires have high hardness, the toughness is insufficient, and it is easy to break when bending or repeatedly bending. How to enhance the toughness of the wire is worth considering in the field.

In view of this, the main purpose of this creation is to provide a wire with high tensile strength and high toughness.

In order to achieve the above and other objects, the present invention provides a wire comprising a first axis and at least one spiral, the spiral being spirally wound on the surface of the first axis with the first axis as an axis; wherein the diameter of the spiral is not Greater than the diameter of the first axis, and the diameter of the spiral is greater than 0.5 mm.

With the above design, the wire of the present invention can maintain high tensile strength while having high toughness.

Referring to Figures 1 to 3, the drawings are a side view, an exploded view and a cross-sectional view of a first embodiment of the wire of the present invention. The wire has a first axis 10 and three spirals 20 spirally wound on the surface of the first axis 10 without overlapping the first axis 10, wherein the diameter D2 of the spiral 20 is not greater than The diameter D1 of an axis, and the diameter D2 of the spiral 20 is greater than 0.5 mm, which also means that the diameter of the first axis 10 must also be greater than 0.5 mm. In the usual processing occasion, the larger the diameter of the first axis 10 and the spiral 20, the higher the difficulty of the winding process; when the diameter of the spiral is lower than the lower limit, the degree of the intensity gain is less significant. In a possible embodiment, the spiral has only one or more strands.

In a possible embodiment, the first axis 10 and the spiral 20 are made of the same resin material, and the optional resin materials include, but are not limited to, polyester resin, polypropylene (PP), polyethylene ( Polyethylene, such as Polyethylene, PE), polyamide amine resin such as Polyamide fibre (PA) and copolymer thereof. Preferably, the first axis and the spiral are stretched to improve strength. The combination of the first axis 10 and the spiral 20 allows the wire to have good compression and tensile strength, and has the ability to be bent in the radial direction, and preferably has a return to the original position and state after the external force disappears. The potential. In other possible implementations, only one of the first axis and the spiral is subjected to a stretching process; or the first axis and the spiral may be different materials. In a possible embodiment, the first axis may be twisted from a plurality of axis wires. To facilitate helical winding, the first axis typically has an outer contour that is substantially circular, nearly circular, or symmetrical.

Compared with the case where there is only the axis alone or only the spiral, the present embodiment can achieve the tensile strength and toughness performance under the same outer diameter condition by spirally winding the spiral on the surface of the first axis.

Please refer to FIG. 4, which is a cross-sectional view of a second embodiment of the wire of the present invention. The second embodiment differs from the first embodiment in that the second embodiment further includes a plurality of metal wires 40 and metal wires. The material of 40 may be copper, steel or other metal materials, and the first axis 10 has a plurality of axially extending grooves 11 on the surface thereof, and the metal wires 40 are buried in the grooves 11. The wire 40 can be used to transmit signals or power. In a possible embodiment, the wires in which the wires are embedded can be applied to a pipe camera or an endoscope. In other possible embodiments, only one metal wire is buried in the wire. In other possible embodiments, the first axis surface may also have no grooves. For example, a plurality of metal wires may be closely arranged on the grooveless first axis surface for spiral winding.

As shown in FIG. 5, in order to pre-fix the metal wire 40 before winding the spiral 20, the wire may further include a first fixing member 50, and the first fixing member may be a tape, a rope, or a coating resin. Or the like, wound around the surface of the first axis 10 to fix the wire 40 within the groove 11 of the first axis 10. In other possible implementations, the metal wire may be pre-fixed to the trench 11 by other means such as adhesive bonding.

Please refer to FIG. 6 , which is a longitudinal sectional view of a fourth embodiment of the wire according to the present invention. The center of the wire of the present embodiment further includes a second axis 60 in addition to the first axis 10 , and the first axis 10 has a first axis 10 . The first abutting end 12, the second axis 60 has a second abutting end 61 adjacent to the first abutting end 12, that is, the first and second axes 10, 60 are coaxially abutting but discontinuous line segments. In order to have different performances of the different sections of the wire, the physical and chemical properties of the first and second axes 10, 60 in the material, total length, thickness, etc. are generally not identical. For example, in the present embodiment, the materials of the first and second axes 60 are Differently, the material of the second axis 60 is, for example, copper or steel. In addition, the wire further includes a second fixing member 70 wound around the intersection of the first and second axes 60, that is, the first and second abutting ends 12, 61 are wound with a second fixing member 70, thereby The second axis 10, 60 is slightly fixed, and then spirally wound around the surfaces of the first and second axes 10, 60 by a spiral 20 to further secure the first and second axes 10, 60. Wherein, the diameter D2 of the spiral 20 is also not larger than the diameter of the second axis 60, and the second fixing member 70 may be a tape, a string, a clamp, an annular holder or the like.

Referring to FIG. 7, in a fifth embodiment of the present invention, the wire further includes a cable holder 30 having a connecting portion 31 and a threading end 32. The connecting portion 31 is sleeved on the first portion. At the end of a threader 10, the threading end 32 is for connecting the cable, and the end of the thread 20 is additionally clamped by the jacket, and the wire can be used as a threading device. In a possible embodiment, a cable retainer can be provided at both ends of the wire.

10‧‧‧first axis

11‧‧‧ trench

12‧‧‧First abutment

20‧‧‧ spiral

30‧‧‧ cable holder

31‧‧‧Connecting Department

32‧‧‧Threading end

40‧‧‧Metal wire

50‧‧‧First fixture

60‧‧‧second axis

61‧‧‧second abutment

70‧‧‧Second fixture

D1, D2‧‧‧ diameter

Figure 1 is a side view of a first embodiment of the present invention.

Fig. 2 is an exploded view of the first embodiment of the present invention.

Figure 3 is a cross-sectional view of the first embodiment of the present invention.

Figure 4 is a cross-sectional view of a second embodiment of the present invention showing the metal wire embedded in the trench.

Figure 5 is a cross-sectional view of a third embodiment of the present invention showing the use of a first fixture to secure a copper wire within a trench.

Figure 6 is a longitudinal cross-sectional view showing a fourth embodiment of the present invention, showing the first and second axes being connected to each other by a second fixing member.

Figure 7 is a side elevational view of a fifth embodiment of the present invention showing the cable holder disposed at an end of the first axis.

Claims (8)

A wire comprising: a first axis; at least one spiral, the spiral is spirally wound on the surface of the first axis without overlapping the first axis, the spiral material is polyester a resin, polypropylene, polyethylene or polyamide fiber; wherein the diameter of the spiral is not greater than the diameter of the first axis, and the diameter of the spiral is greater than 0.5 mm. The wire of claim 1, further comprising at least one metal wire, and the first axis surface has at least one axially extending groove, the wire being embedded in the groove. The wire of claim 2, further comprising a first fixing member wound around a surface of the first axis to fix the wire in the groove of the first axis. The wire according to claim 2, wherein the wire is made of copper or steel. The wire of claim 1, further comprising a second axis and a second fixing member, the first and second axes being coaxial, the first axis having a first abutting end, the second axis having a first a second abutting end is adjacent to the first abutting end, the second fixing member is wound around the first and second abutting end surfaces; the spiral is spirally wound on the surface of the second axis; wherein the diameter of the spiral is not greater than The diameter of the second axis. The wire according to claim 1, wherein the first axis is made of polyester resin, polypropylene, polyethylene or polyamide fiber. The wire of claim 5, wherein the second axis is made of copper or steel. The wire of claim 1, further comprising a cable holder disposed at one end of the first axis.