JPS6246895Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has an inner cable that is slidably inserted into an outer tube to transmit operating force in both directions (push/pull) or either direction.The end of the control cable is connected to a driving member or a driven member. The present invention relates to a terminal device for connection, and particularly to a terminal device used when a rod connected to an end of an inner cable not only reciprocates in the axial direction but also swings in the radial direction.

Conventionally, when a rod connected to an end of an inner cable oscillates in a radial direction, a terminal device equipped with a sleeve S, as shown in FIG. 1, has been frequently used.

In this type of terminal device, the end of an outer tube a having a center hole b of a control cable A is fitted into the enlarged diameter portion of the rear end of the center hole d of a cylindrical steel fixture c and fixed by caulking. A spherical concave surface e is formed at the tip of the cylindrical fixture c, and a spherical head formed at the rear end of the sleeve S having a transparent guide hole is fitted into the spherical concave surface e. The vicinity of the opening of the sleeve S is constricted to form a reduced diameter part f, so that the sleeve S can freely swing around its spherical head, and the inner cable inserted into the center hole b of the outer tube a is k
The end of the steel rod m is inserted into the guide hole of the sleeve S, and the steel rod m is fitted into the guide hole to freely slide.
The end of the inner cable k is inserted into the blind hole n on the end face of the cable k and is connected by caulking. Also,
The cylindrical fixture c is fixed to a bracket t projecting from the frame by nuts s, s screwed onto a screw g formed on its outer periphery, and the tip of the rod m is used to drive a lever w, etc. or a driven member.

On the drive side, the swinging of the lever w causes the inner cable k connected to the rod m to push and pull within the center hole b of the outer tube a, and on the driven side, the inner cable k is pushed and pulled. Due to the movement, the rod m expands and contracts from the sleeve S, causing the lever w to swing, and at this time, the rod m and the sleeve S swing vertically at a small angle around the spherical concave surface e of the cylindrical fixture c. However, in the conventional terminal device, since the sleeve S was made of metal such as steel or aluminum, metal-to-metal contact occurred at the sliding part with the cylindrical fixture c and the rod m, and the sliding The resistance is large, and
It had the disadvantage of premature wear and also produced a squeaking sound.

In order to eliminate this drawback, the sleeve S can be made of synthetic resin, but synthetic resin has lower mechanical strength than steel. When the sleeve S is pushed into the sleeve S, there is a risk that an excessive compressive load will be applied to the sleeve S due to frictional resistance with the rod m, causing buckling. When the sleeve S swings, it is easily damaged when it is hit by a foreign object such as a pebble or a pebble.Furthermore, when the sleeve S swings, its base is pressed against the reduced diameter portion f and easily breaks.

The present invention was completed taking these circumstances into consideration, and its purpose is to provide a terminal device equipped with a sleeve that reduces friction with the rod and has excellent mechanical strength. It is about providing.

Hereinafter, an embodiment of the present invention will be explained based on the accompanying drawings. As shown in Fig. 2, the sleeve S of this embodiment is made of synthetic resin such as nylon, polyacetal, polyethylene, polycarbonate, polyvinyl chloride, etc. Therefore, it consists of an integrally formed inner cylinder 1 and a steel main body 2 having a spherical head 23 formed at the rear end of a cylinder part 21 having a center hole 22, and the inner cylinder 1 having a guide hole 12. A collar 13 is formed at the rear end of the cylindrical portion 11, and an axial groove 15 is formed at the tip of the cylindrical portion 11.
Elastic bending piece 1 divided into four parts in the circumferential direction
6 is formed, and each elastic bending piece 16 has a structure in which a tapered surface 17 and a backward hook 18 are formed on the outer periphery of the tip end.

When the inner cylinder 1 is pushed into the center hole 22 of the main body 2 from its tip, the tapered surface 17 serves as a guide and each elastic bending piece 16 bends inward and is inserted while reducing its diameter. When protruding from the tip of the hole 22, each elastic bending piece 16 expands due to elastic restoring force, and the main body 2 is fitted into the inner cylinder 1 between the collar 13 and the hook 18, making it impossible to move in the axial direction. A sleeve S is constructed in which a steel main body 2 is fitted onto the outer periphery of a cylindrical portion 11 of a steel inner cylinder 1, and when the sleeve S having this structure is used in the terminal device shown in FIG.
Since the inner cylinder 1 in contact with the spherical head 23 is made of synthetic resin, the frictional force is reduced, the sliding resistance is reduced, the wear resistance is improved, and the sliding noise is significantly reduced. Since the surface is made of metal, it has excellent mechanical strength.

In addition, as shown in FIG. 3, the cylindrical portion 11 of the inner cylinder 1
The flange 14 may be formed and fixed by removing the tapered surface 17, the hook 18, and the split groove 15 formed at the tip of the cylindrical part 11, fitting the cylindrical part 11 into the main body 2, and bending its protruding end outward. .

As specifically explained in the above embodiment,
In the control cable terminal device of the present invention, a cylindrical fixture is fixed to the terminal of the outer tube of the control cable in which the inner cable is slidably inserted into the outer tube, and a concave surface formed at the tip of the cylindrical fixture is fixed to the control cable. A spherical head formed at the rear end of the sleeve is fitted, and the tip of the concave surface is reduced in diameter to freely swing and support the sleeve relative to the cylindrical fixture, so that it can slide freely on the sleeve. In a control cable terminal device in which the end of the inner cable passed through the cylindrical fixture is connected to the fitted rod, the sleeve is connected to the cylindrical part of the metal main body in which the spherical head and the cylindrical part are integrally molded. The main feature is that an inner cylinder made of synthetic resin is fitted onto the inner periphery of the rod, and since the parts that come in contact with the cylindrical fixture and the rod are made of synthetic resin, the sliding resistance is reduced. In addition to improving wear resistance,
Since the outer periphery is made of metal, it has high mechanical strength, and there is no risk of buckling even when an impact force is applied.
It does not break easily even if it is pressed against the reduced diameter part of the cylindrical fixture when swinging, and it also does not cause scratches even if it rubs against surrounding parts or hits foreign objects. play.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the present invention; FIG. 1 is a sectional view, FIG. 2 is an exploded perspective view of the main parts, and FIG. 3 is a sectional view of the main parts of a modified example. A: Control cable, a: Outer tube, c: Hub, e: Spherical concave surface, f: Reduced diameter section, k:
Inner cable, m: rod, S: sleeve,
1: inner cylinder, 11: cylinder part, 12: guide hole, 2: main body, 21: cylinder part, 23: spherical head.

Claims (1)

[Scope of utility model registration request] A cylindrical fixture is fixed to the end of the outer tube of the control cable in which the inner cable is freely slidably inserted into the outer tube, and a spherical head is formed at the rear end of the sleeve on the concave surface formed at the tip of the cylindrical fixture. are fitted, the diameter of the tip of the concave surface is reduced, and the sleeve is supported in a freely swinging manner relative to the cylindrical fixture, and the rod fitted into the sleeve so as to freely slide is inserted into the cylindrical fixture. In the control cable terminal device in which the ends of the inner cable are connected through the sleeve, the sleeve is formed by attaching a synthetic resin inner periphery to the inner periphery of the cylindrical part of the metal main body in which the spherical head and the cylindrical part are integrally molded. A control cable terminal device characterized by having a structure in which a tube is fitted.