TWI705020B - Wire guiding sheath for vehicle - Google Patents

Abstract

A wire guiding sheath for a vehicle is provided, including: an inner tube; a metal layer, including at least one wire disposed around an outer circumferential surface of the inner tube along an axial direction of the inner tube, the at least one wire being physically connected to the outer circumferential surface of the inner tube and being physically and completely separable from the inner tube.

Description

Catheters for vehicles

The invention relates to a catheter for a vehicle.

Generally, the brake device and the speed change device of a bicycle are controlled by a wire, which includes an inner wire and a tube set on the outer periphery of the inner wire. The catheter is used for the inner wire to pass through, so that the inner wire can slide in the inner space of the catheter, and provides moisture-proof and impact-resistant effects to protect the inner wire.

The conventional catheter includes an inner tube, which is usually made of plastic material to provide a smooth inner peripheral surface, which facilitates the sliding actuation of the inner wire in the inner tube. However, the inner tube also has a smooth outer peripheral surface, which is not conducive to combining with other layer bodies, causing the inner tube and the layer body provided on the outer circumference to be easily misaligned during use, and the structural stability is not good. In addition, the conventional catheter includes plastic and metal materials, and the layers of the catheter are sheathed with each other, which also makes it difficult to sort and handle the replaced catheter, which has shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and advanced vehicle catheter to solve the above-mentioned problems.

The main purpose of the present invention is to provide a catheter for a vehicle, the layers of which can be completely peeled off from each other.

To achieve the above object, the present invention provides a vehicle catheter, including: an inner tube; a metal layer, including at least one wire wound on the outer circumference of the inner tube along an axial direction of the inner tube, the at least one wire It physically covers the outer peripheral surface of the inner tube and can physically and completely peel off the inner tube.

1: Catheter

2: inside

10: inner tube

11: Convex part

12: Swivel recess

20: Metal layer

21: Wire

211: Segment

212: Gap

30: Outer layer

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of a preferred embodiment of the present invention.

Figure 3 is a partial enlarged view of Figure 2.

Figure 4 is a schematic diagram of the use of a preferred embodiment of the present invention.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to FIGS. 1 to 4, which show a preferred embodiment of the present invention. The catheter 1 for a vehicle of the present invention includes an inner tube 10 and a metal layer 20.

The metal layer 20 includes at least one wire 21 wound on the outer circumferential surface of the inner tube 10 along an axial direction of the inner tube 10. The at least one wire 21 physically covers the outer circumferential surface of the inner tube 10 and can be The inner tube 10 is physically and completely peeled off. Among them, the physical covering methods include mutual embedding, tight binding, or glue adhesion. As a result, the layers of the catheter 1 are easy to be completely peeled off each other, and it is easy to sort and process after replacement without additional processing.

The inner tube 10 includes a plurality of spiral protrusions 11 extending spirally and protruding from the outer peripheral surface of the inner tube 10, the plurality of spiral protrusions 11 are spaced apart, and the plurality of spiral protrusions 11 are defined between adjacent two A spiral recessed portion 12, each of the wires 21 is partially accommodated in a spiral recessed portion 12, which can prevent the at least one wire 21 and the inner tube 10 from being misaligned with each other. In detail, the plurality of spiral protrusions 11 can be a plurality of segments continuously extending and protruding, or they can be separately provided on the outer peripheral surface of the inner tube 10. When in use, the inner tube 10 can accommodate an inner wire 2, and the outer peripheral surface of the inner tube 10 can be more stably joined with the at least one wire 21. The thickness of the metal layer 20 is preferably greater than the thickness of the inner tube 10 to increase the mechanical strength of the catheter 1.

In detail, the at least one wire 21 includes a plurality of segments 211, and each of the segments 211 corresponds to a spiral recess 12; there is a gap 212 between adjacent two of the plurality of segments 211, and each of the spiral protrusions 11 is a ridge and is at least partially embedded in the gap 212 so that the at least one wire 21 can be stably combined with the inner tube 10. In this embodiment, the at least one wire 21 is a flat metal wire, and adjacent two of the plurality of segments 211 abut to cover the inner tube 10 more comprehensively, which increases the structural strength and facilitates bending configuration. In other embodiments, the at least one wire may also be made of metal wires of other shapes such as a circle, an ellipse, or a square, or include a plurality of metal wires; the plurality of segments may also be arranged at intervals; each of the convex portions It can also protrude in a trapezoidal, rectangular or arc shape according to configuration requirements.

The catheter 1 further includes an outer layer 30 covering the metal layer 20. The outer layer 30 physically covers the outer peripheral surface of the metal layer 20 and can physically and completely peel off the metal layer 20 to fix the The metal layer 20 avoids abrasion and corrosion, and facilitates sorting and processing after replacement. The outer layer 30 has an integral, continuous and smooth outer peripheral surface. The at least one wire 21 is radially embedded in the outer layer 30. The depth of the at least one wire 21 embedded in the outer layer 30 is preferably less than the thickness of the outer layer 30. The outer layer 30 can be completely The at least one wire 21 is not exposed to the outside, which prevents corrosion and has good bonding stability; the depth of the at least one wire 21 embedded in the outer layer 30 is not less than the depth of the spiral recess 12, which can increase the bonding between the layers Stability to avoid mutual error move. The thickness of the metal layer 20 is greater than the thickness of the outer layer 30 to prevent the outer layer 30 from being too thick to make the catheter 1 difficult to bend and install.

1: Catheter

10: inner tube

11: Convex part

12: Swivel recess

20: Metal layer

30: Outer layer

Claims (8)

A vehicle catheter, comprising: an inner tube; a metal layer, comprising at least one wire wound on the outer peripheral surface of the inner tube along an axial direction of the inner tube, and the at least one wire is physically connected to the inner tube The outer peripheral surface of the tube can be physically and completely peeled off the inner tube; and an outer layer that physically and completely covers the outer peripheral surface of the metal layer and can physically and completely peel off the metal layer; wherein the outer layer has The at least one wire is radially embedded in the outer layer. The catheter for a vehicle according to claim 1, wherein the thickness of the metal layer is greater than the thickness of the inner tube. The vehicular catheter according to claim 1, wherein the inner tube includes a plurality of helical protrusions extending and protruding from the outer peripheral surface of the inner tube, the plurality of helical protrusions are arranged at intervals, and the plurality of helical protrusions A spiral recess is defined between adjacent two, and each of the wires is partially accommodated in the spiral recess. The vehicular catheter according to claim 3, wherein the at least one wire includes a plurality of segments, and each segment corresponds to a spiral recess. The vehicular catheter according to claim 4, wherein a gap is formed between adjacent two of the plurality of segments, and each of the convex portions is at least partially embedded in the gap. The catheter for a vehicle according to claim 3, wherein the volute portion has a ridge shape. The vehicle catheter according to claim 1, wherein the thickness of the metal layer is greater than the thickness of the outer layer. The vehicle catheter according to claim 5, wherein the thickness of the metal layer is greater than the thickness of the inner tube; the at least one wire is a metal wire, and the adjacent two of the plurality of segments abut against each other; and the convex portion is Ridge; the depth of the at least one wire embedded in the outer layer is not less than the depth of the convoluted portion; the thickness of the metal layer is greater than the thickness of the outer layer.

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