JPH0738742U - Control cable - Google Patents

Abstract

(57) [Summary] [Purpose] In the control cable, the load applied to the conductive wire is reduced and the conductive wire is easily separated from the inner cable. [Configuration] Control cable 1 is inner cable 2
And an outer casing (4) enclosing a shield tube (5) through which the inner cable (2) penetrates. On both sides of the outer casing 4, a pair of conductive wires 3, 3 are embedded so as to be substantially symmetrical with the shield cylinder 5 interposed therebetween. Outer casing 4
Between each of the conductive wires 3 and the shield cylinder 5, concave grooves 40, 40 are formed substantially parallel to the shield cylinder 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a control cable arranged for mechanical and electrical remote control in automobiles, agricultural machines and the like.

[0002]

[Prior art]

 A control cable having both mechanical remote control and electrical remote control functions is shown in FIGS. 5 (a) and 5 (b) (see Japanese Utility Model Laid-Open No. 54-183539). This consists of an outer cable tube (6) consisting of a tightly wound spring and a single conductive wire (3) placed in close proximity to each other, and both of them are covered with a flexible insulating material such as vinyl chloride. Is. The inner cable (2) is slidably inserted into the inner surface of the outer cable (6). By pulling the inner cable (2), mechanical movement is transmitted from the operating side to the operated side, and an electric signal is sent by the conductive wire (3).

[0003]

[Problems to be solved by the device]

The conventional control cable (1) has only one conductive wire (3) and the outer cable (6) uses a close-wound spring which is weak against tensile stress. When a tensile load is applied to the outer cable (6) of the cable (1), the conductive wire
The same load is applied to (3). Therefore, the conductive wire (3) is easily cut. In addition, when connecting the conductive wire (3) to an electric device, etc., it is common to connect the conductive wire (3) separately from the outer cable duct (6). It is also necessary to improve workability when separating the wire (3). An object of the present invention is to reduce the load applied to the conductive wire (3) when a tensile load is applied to the control cable (1) and to facilitate the separation of the conductive wire (3).

[0004]

[Means for solving the problem]

 The outer casing (4) of the control cable (1) covers the shield tube (5) through which the inner cable (2) slidably passes. A pair of conductive wires (3) and (3) are embedded in both sides of the outer casing (4) so as to be substantially symmetrical with the shield tube (5) interposed therebetween. Recessed grooves (40) (40) are formed between the conductive wire (3) of the outer casing (4) and the shield cylinder (5) substantially parallel to the shield cylinder (5).

[0005]

[Action and effect]

 Since the conductive wires (3) and (3) are arranged substantially symmetrically with the shield tube (5) interposed therebetween, when a tensile load is applied to the control cable (1), most of the load is applied to the shield tube (5). ), And the remaining load is shared by both conductive wires (3) (3). Therefore, the load applied to each conductive wire (3) can be reduced, and the conductive wire (3) can be prevented from being cut. Further, since the outer casing (4) is provided with recessed grooves (40) (40) between the conductive wire (3) and the shield cylinder (5) substantially parallel to the shield cylinder (5), Each conductive wire (3) is easily separated from the shield tube (5).

[0006]

【Example】

 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view of the control cable (1). A plurality of shield wires (50) are concentrically arranged on the peripheral wall of the liner (60) that is a thin cylinder to form a shield cylinder (5). The inner cable (2) is slidably inserted into the shield tube (5). Conductive wires (3) and (3) are arranged in parallel on both sides of the shield tube (5). The conductive wires (3) are arranged symmetrically with the shield tube (5) interposed therebetween. The conductive wire (3) is closely fitted to the tube (7) made of an insulating material such as vinyl chloride.

In this state, the shield cylinder (5) and the tube (7) are covered with resin. The resin is preferably polypropylene or nylon elastomer, polyester elastomer, etc., which has appropriate hardness and bending elasticity and is easy to mold. The resin covering the shield cylinder (5) and the tube (7) constitutes the outer casing (4). As shown in Fig. 1, the outer casing (4) has a circular cross section and encloses the shield tube (5). On both sides of the center casing (42), side casings (43) and (43) enclosing the tube (7) are integrally provided. ing. The outer casing (4) is provided with concave grooves (40) (40) between the center casing (42) and the side casings (43) (43). Each groove (40) is recessed from the surface of the outer casing (4) toward the virtual line (51) connecting the shield tube (5) and the conductive wire (3), and is substantially parallel to the axial direction of the inner cable (2). It is opened in. A slit (41) is opened outside the side casing (43). When a force is applied to widen both sides of the slit (41), the outer casing (4) is separated at the slit (41) as a boundary, and the tube (7) is exposed.

When using the control cable (1), a tensile load may be applied in the cable direction. In this embodiment, since the two conductive wires (3) and (3) are symmetrically provided with the shield tube (5) sandwiched therebetween, most of the load is borne by the shield tube (5) and the rest is left. The load of is shared by both conductive wires (3) (3). Therefore, almost no load is applied to each conductive wire (3), and cutting of the conductive wire (3) can be effectively prevented. In addition, when the control cable (1) is used, the conductive wire (3) may be separated from the shield tube (5) and connected to an electric device or the like for use. In this embodiment, since the concave grooves (40) (40) are provided between the center casing (42) and the side casings (43) (43), the conductive wire (3) is connected to the control cable (1). It is easy to separate from and has good workability.

As a typical example of the use of the control cable (1), as shown in FIG. 3, a mower with a motor is cited. An elongated connecting pipe (80) extends from the prime mover body (9), and a rotary blade (81) for mowing is provided at the tip end of the connecting pipe (80). A handle (8) is provided at the base end of the connecting pipe (80), and an operating lever (82) and an electric switch (83) are provided at one end of the handle (8). The control cable (1) passes through the handle (8) and the connecting pipe (80) and connects the operation lever (82) and the electric switch (83) to the prime mover body (9). The connection between the operating lever (82), the electric switch (83) and the prime mover body (9) is as shown in FIG.

A base end portion is pivotally supported in the prime mover body (9), and a rotary lever (90) for rotating the prime mover to rotate in a counterclockwise direction and a pair of power supply terminals (91) (91 ) Is provided. The operating lever (82) has a central portion pivotally supported by the handle (8) and one end of the inner cable (2) connected to the free end thereof. In the vicinity of the free end, the side casings (43) (43) are separated from the control cable (1) and one ends of the conductive wires (3) (3) are connected to the electric switch (83). The other end of the inner cable (2) is connected to the free end of the rotating lever (90), and the other ends of the conductive wires (3) and (3) are connected to the power supply terminals (91) and (91).

When the electric switch (83) is turned on, an ON signal is sent to the prime mover via the conductive wires (3) and (3) and the power supply terminals (91) and (91), and the prime mover enters a standby state for operation. . When the operating lever (82) is rotated counterclockwise, the inner cable (2) is pulled, the rotating lever (90) rotates counterclockwise, and the prime mover operates. The rotary power of the prime mover is transmitted to the rotary blade (81) through the connecting pipe (80), and the rotary blade (81) rotates. When you release your hand from the operating lever (82), the operating lever (82) returns to its original position by a spring (not shown) provided in the pivot portion, the rotating lever (90) rotates clockwise, and the prime mover moves. Keep spinning. When the electric switch (83) is turned off, the rotation of the prime mover stops and the rotation of the rotary blade (81) also stops.

In the present invention, the two conductive wires (3) and (3) are symmetrically provided with the shield tube (5) sandwiched between them so that most of the above tensile load is applied to the shield tube (5). This is also for the purpose of protecting the conductive wires (3) and (3) with little burden on each conductive wire (3) and allowing each conductive wire (3) to be separated separately. That is, as shown in FIG. 2, in the control cable (1) in which one conductive wire (3) is sandwiched between the other conductive wire (3) and the shield tube (5), the outer conductive wire (3) If it is not separated from the outer casing (4), the inner conductive wire (3) cannot be separated, which is inconvenient. Further, since the slit (41) is provided, the tube (7) can be easily exposed, which is convenient when the conductive wire (3) is exposed and connected to an electric device or the like.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the scope of the utility model registration request or reducing the scope. Further, the configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the scope of claims for utility model registration. For example, in the above-described embodiment, the conductive wire (3) is fitted in the tube (7) made of an insulator, but the tube (7) is removed and the outer casing (4) is made of an insulating material. You may.

[Brief description of drawings]

FIG. 1 is a sectional view of a control cable.

FIG. 2 is a cross-sectional view of another control cable cited to show the superiority of the control cable.

FIG. 3 is a perspective view of a mower incorporating a control cable.

FIG. 4 is a diagram showing a connection state of the control cable of the above.

FIG. 5A is a sectional view of a conventional control cable,
(b) is a perspective view of the above.

[Explanation of symbols]

 (1) Control cable (2) Inner cable (3) Conductive wire

Claims (1)

[Scope of utility model registration request] 1. A shield cylinder (5) through which an inner cable (2) slidably penetrates is covered with an outer casing (4), and the shield cylinder (5) is sandwiched between both sides of the outer casing (4). A pair of conductive wires (3) and (3) are embedded so as to be substantially symmetrical, and each conductive wire (3) of the outer casing (4) and the shield tube (5)
The control cable is characterized in that the groove (40) (40) is provided between the shield tube (5) and substantially parallel to the shield tube (5).