JPH0248905Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a remote control device using a control cable installed in automobiles, agricultural machinery, etc. for remote control, and in particular to a control cable for transmitting operation motion. The present invention relates to a remote control device in which the inner cable is prevented from twisting or rotating during exercise so as to allow accurate exercise.

<Prior art> A control cable is a flexible inner cable that is slidably inserted into an inner hole of an outer casing made of a flexible tube or a bent tube. Advance one end,
By performing a backward operation and transmitting the movement to the other end, a device to be operated at a remote location can be remotely controlled.

In the control cable, a certain kind of inner cable is used for pushing and pulling operations, and a steel wire is tightly wound around the outer peripheral surface of the steel stranded wire in a rough spiral shape to provide a convex thread to form a toothed cable. The gear teeth of a disc or cylindrical gear body are engaged with the concave spiral groove of the cable, and by rotating the gear body, the toothed cable is moved linearly forward and backward in the direction of its longitudinal axis to transmit motion. There are things that are designed to do this.

<Problems to be solved> However, in the drive method described above in which gear teeth are engaged with the toothed cable and the toothed cable is moved linearly in the vertical axis direction by rotation of the gear body, the toothed cable is If the end is not fixed and is in a free state, the gear teeth are engaged with the concave spiral groove, so when the gear body is rotated, a linear force and a small rotational force attached to the concave spiral groove are generated. When the tip of the toothed cable protrudes from the outer casing, it bends and moves forward in a ring shape due to its flexibility.
fall back.

For this reason, for example, in a binder for agricultural machinery, in order to bite the free-hanging binding rope into the rope gripping part of the binding mechanism, it is necessary to push the rope forward from the terminal of the outer casing. When using a toothed cable that protrudes in a free state and pushes the operated object with its tip,
The end of the toothed cable may not be able to reliably catch the drop rope, and the rope may be pushed forward and miss-swinging, making it impossible to pass it to the opponent.

In addition, when pressing a push button, a guide mechanism must be installed and guided to the button so that the tip of the toothed cable moves straight, and this mechanism is complicated and difficult to install and takes time. Moreover, the cost also increases.

<Means for Solving> The inner hole of the guide pipe that guides and accommodates the toothed cable has a non-circular shape, and the end portion of the toothed cable that slides inside the inner hole has the shape of the inner hole of the pipe. A stopper of the same shape is fixed, the toothed cable can slide in the inner hole of the guide pipe but cannot rotate, the toothed cable protruding from the end of the outer casing is made to run straight, and a complicated appendage such as a guide mechanism is secured. It is designed to allow reliable straight-line operation even without a driver, and to eliminate erroneous operations.

<Embodiment> To explain the present invention with reference to drawings, in the remote control device A shown in FIG. has been done. As shown in FIG. 2, the toothed cable 3 is provided with a convex thread 32 on the outer peripheral surface of a steel stranded wire 31 by tightening the steel wire in a spiral shape with a rough gap, and a concave thread in the space between the two. A groove 33 is formed.

The terminals of the outer casing 2 are locked to locking portions 4a, 4b of related equipment to guide and protect the toothed cable 3. The toothed cable 3 passing through the inner hole of the outer casing 2 has both terminal parts protruding from the outer casing 2, and a terminal part 5 is fixed to one terminal,
The other end portion is a guide pipe 6 for guiding and storing the toothed cable 3 that moves linearly in the vertical axis direction.
is inserted into the inner hole 61 of.

Furthermore, the outer casing 2 and the guide pipe 6
A disc or cylindrical gear body 7 is brought into contact with the toothed cable 3 exposed between the two, and the gear teeth 71 are placed so as to mesh with the concave spiral grooves 33. When the gear body 7 rotates due to the relationship of the convex thread 32, the toothed cable 3 moves back and forth in the direction of rotation. Thereby, the terminal part 5 of the toothed cable 3 is used to push and operate the operated object 8.

The guide pipe 6 guides the sliding end of the toothed cable 3 so that it does not move around freely, and is disposed on the opposite side of the outer casing 2 with the gear body 7 interposed therebetween in order to house this. Third
As shown in the figure, the inner hole 61 is non-circular, and the toothed cable 3 inserted into the inner hole 61 has a cable end part 34 fixed thereto at its end, which has the same shape as the inner hole 61 but is slightly smaller in size. If the guide pipe 6 is a flexible synthetic resin pipe, it is easy to manufacture and can be easily installed in related equipment, and since the cable end part 34 is easy to slide, the operating force is reduced.

<Function> When the control cable 1 is operated by rotating the gear body 7 and moving the toothed cable 3 back and forth, a small force is applied to the toothed cable 3 in addition to the pushing and pulling force in the linear direction. The force to rotate this is also added. However, since the inner hole 61 of the guide pipe 6 is non-circular and the cable end part 34 of the toothed cable 3 is also non-circular in a similar shape, the toothed cable 3 is inserted into the inner hole of the guide pipe 6. It is stopped from rotating and can only move in a straight line.

<Effect> Therefore, since the toothed cable does not rotate and moves forward and backward only in a straight line, the terminal part that pushes the operated object does not move while drawing a ring shape caused by rotation, and it Since it moves along a trajectory, there is no need to push the object to be operated, and the operation can be transmitted reliably. At the same time, there is no need for a guide mechanism for guiding the movement of the toothed cable between the operated objects from the outer casing end, making the device simple.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the remote control device of the present invention, FIG. 2 is a partially cutaway perspective view of a toothed cable, and FIG. 3 is a partially cutaway perspective view of a guide pipe. A... Remote control device, 1... Control cable, 2... Outer casing, 3... Toothed cable, 31... Cable end component, 6... Guide pipe,
61...Inner hole.

Claims (1)

[Claims for Utility Model Registration] A toothed cable 3 is slidably inserted into the inner hole of the outer casing 2, and the gear teeth 71 of the gear body 7 are meshed with the concave spiral grooves 33 of the toothed cable 3. In a remote control device A using a control cable 1 that operates an object to be operated by rotating the body 7 and moving the toothed cable 3 in a linear direction, a guide pipe 6 in which the terminal part of the toothed cable 3 is housed. The inner hole 61 is non-circular, and the inner hole 6
A cable end part 34 similar to the inner hole 61 type and having a slightly smaller size is fixed to the end of the toothed cable 3 which is inserted into the inner hole 61 and slides therein. A remote control device A that is slidable and non-rotatable.