JPS582897Y2 - Push-pull cable terminal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a terminal device for attaching a push-pull cable, in which an inner cable is slidably inserted into an outer tube, to a mechanical device, and in particular, a hub connected to an end of the outer tube; The present invention relates to a terminal device that reduces sliding resistance with a rod connected to an end of an inner cable.

As illustrated in FIG. 1, a conventional push-pull cable terminal device has a hub b fixed to the end of a flexible outer tube a, and a hub F screwed into a male thread C formed on the outer periphery of the hub b. The outer tube a and The tip of the inner cable j, which is slidably inserted into the hub b, is caulked and fixed to the rear end of the rod g, and the tip of the rod g, which protrudes from the hub b, is screwed into a male thread i formed on its outer periphery. Connector k
It is pivotally supported on lever m via inch cable j
The rod g moves to the left and right in the figure by the pushing and pulling motion of the lever m, and at this time, the rod g
Since the swinging of the lever m causes a swinging movement around the spherical head, the outer periphery of the spherical head is strongly pressed against the inner surface of the guide hole d by the bending resistance of the inner cable, causing linear movement. A rotational movement is performed by swinging the rod g.

However, in conventional push-pull cables, the hub b is made of metal such as steel or zinc alloy, the housing and rod g are also made of steel, and the coefficient of friction between the guide holes d on the spherical head is large. As a result, not only does the operating resistance of the inch cable j increase, but the sliding surface wears out prematurely, increasing the play in the radial direction of the rod g.Furthermore, a squeaking sound of metal sliding against each other is generated, resulting in failure. It had some drawbacks, such as giving a sense of pleasure.

The object of the present invention is to provide a terminal device with a novel structure that solves all of these drawbacks at once.

Hereinafter, an explanation will be given based on FIGS. 2 and 3 showing an embodiment of the present invention.

FIG. 2 shows a first embodiment of the present invention.

In the figure, 1 is a metal hub connected to the end of an outer tube (not shown), and a large diameter guide hole 3 communicating with a sliding hole 2 into which an inner cable 4 is inserted is formed on the inner periphery of the end. ing.

5 is a metal rod that is partially inserted into the guide hole 3, and the end of the inch cable 4 is inserted into the center hole 6 drilled in the end face, and connected by caulking from the outer periphery. At the same time, a spherical head 7 is provided on the outer periphery of the end.

The spherical head 7 of this embodiment has a spherical surface 10 on the outer periphery between two protrusions 8.8 formed at intervals on the outer periphery of the rod 5.
The structure is such that a ring 9 made of synthetic resin is fixed.

It is desirable that the synthetic resin used for the ring 9 has excellent abrasion resistance and compression resistance, such as nylon 6.
, nylon-based synthetic resins such as nylon 6-6 are suitable.

FIG. 3 shows a second embodiment of the present invention.

In this embodiment, a synthetic resin ring 9 having a spherical surface 10a is provided in a groove 8a cut on the outer periphery of the end of the rod 5a.
A spherical head 7a is constructed by fixing the parts a.

The rest of the structure is exactly the same as the first embodiment.

In addition, as an embodiment of the present invention, a spherical head may be integrally formed at the end of a metal rod, and its outer peripheral surface may be thinly coated with synthetic resin. It is preferable to use fluorine-based synthetic resins such as .

As clarified by the above explanation, the gist of the push-pull cable terminal device of the present invention is that at least the outer circumference of the spherical head of the rod that slides into the guide hole of the knob is formed of a synthetic resin material. Synthetic resin has a low affinity with metals, and the coefficient of friction with metals is smaller than that between metals, so the rod swings and the spherical head presses strongly against the guide hole of the knob. It slides with relatively little resistance even when the cable is exposed, reducing the operating resistance of the inner cable, as well as reducing wear on the spherical head and providing excellent durability.
In addition, it has the effect of not causing metal-to-metal rubbing noise.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional device. Figures 2 and 3 are enlarged sectional views of essential parts of the embodiments of the present invention. 1...Hub, 3...Guide hole, 4...
...Inner cable, 5...Rod, 7.7
a...Spherical head, 9°9a...Synthetic resin ring.

Claims (1)

[Claims for Utility Model Registration] A guide hole is formed in the inner periphery of the end of a metal hub connected to the outer tube, and a rod having a spherical head formed at the end can be freely slid into the guide hole. In the push-pull cable terminal device, the push-pull cable terminal device is inserted to freely swing at a small angle around the spherical head, and is connected to the inner cable slidably inserted into the outer tube and the hub. A terminal device for a push-pull cable, characterized in that at least an outer peripheral portion of the spherical head of the rod is formed from a synthetic resin material.