JPS6020828Y2 - Push-pull cable terminal connection device - Google Patents

Description

[Detailed description of the invention] The present invention is a device for connecting the end of a push-pull cable used for remote control of mechanical devices such as vehicles to a driving member such as an operating lever or a driven member such as a fork operating rod of a transmission. In particular, the present invention relates to an end coupling device used when the driving member or the driven member is not only involved in axial movement of the push-pull cable, but also in a direction perpendicular to the axial direction.

A conventional push-pull cable terminal connection device, as shown in Fig. 1, is a push-pull cable A in which an inner cable k is slidably inserted into the center hole of an outer tube a.
A hub C having a transparent center hole d is fixed to the end of the outer tube a, and an enlarged diameter hole e having a hemispherical inner end is formed at the tip thereof, and a hub C having a transparent center hole d is formed at the end of the outer tube a. sleeve h
A spherical enlarged diameter head j formed at the end of the sleeve h is tightly fitted into the enlarged diameter hole e, and a reduced diameter portion f is formed near the end of the enlarged diameter hole e. It can be bent freely around the enlarged diameter head j, and the end of the inner cable inserted through the center holes of the outer tube a and the hub C, d, is inserted into the guide hole i of the sleeve h. ,
The end of the inner cable is fitted into a blind hole n formed in the end face of a rod m which is slidably fitted into this guide hole i, and is connected by caulking, so that the tip of the hub C and the protrusion of the rod m The space between them is covered by a bellows-shaped dust boot p.

Further, the hub C has a nut S screwed onto a male thread g formed on its outer periphery.

S is fixed to a bracket t projecting from the frame.

A lever y is connected to the tip of the rod m by a pin W, which swings in the front-rear direction about the fulcrum P and in the left-right direction perpendicular to the plane of the paper.When the lever y swings back and forth about the fulcrum P, The rod m slides back and forth within the sleeve h to cause a push-pull motion on the inner cable k, and at this time, the sleeve h causes a small-angle swinging motion up and down around the enlarged head j, and the lever When y swings left and right about the fulcrum P, the rod m swings about the expanded head j of the sleeve h, and the relative angle between the lever y and the rod m changes.

For this reason, unless the fitting gap between the pin W and the lever y or the rod m is made large, the rod m will not fit into the sleeve h.
The slide is forced strongly against one side of the guide hole i, which not only increases sliding resistance and prematurely wears the sliding surface, but also causes large bending and torsional moments to act on each component. result.

However, if the fitting gap between the pin W and the lever y or the rod m is increased, the play becomes a dog, and the inch cable k does not push or pull accurately following the swinging of the lever y. , the edge of the connecting hole of the lever y and rod m is strongly pressed by the pin W, resulting in uneven wear.

This problem can be solved with other constructions of push-pull cable end coupling devices, such as those that lack a sleeve and have a spherical enlarged head formed at one end of the rod inside a guide hole formed in the center of the knob. The same problem occurs with terminal coupling devices in which the rod slides in the axial direction and swings around the enlarged diameter head, and the drive side and driven side of the push-pull cable This can happen to any terminal coupling device on either side.

In order to eliminate these drawbacks, a universal joint such as a ball joint may be used, but the structure is complicated and expensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a push-pull cable terminal connection device that has a simple structure and is easy to manufacture.

Hereinafter, embodiments of the present invention will be described based on FIGS. 2 to 9.

A first embodiment of the present invention is shown in FIGS. 2-4.

In the figure, reference numeral 1 denotes a horizontally long block-shaped connecting member, which has a split groove 11 reaching the center at one end and a connecting hole 12 perpendicular to the split groove 11, and the other end. A large diameter hole 13 and a small diameter hole 14 are arranged in series,
In addition, the fitting hole 15 that intersects with the large diameter hole 13 is the connecting hole 1.
2, the lever y inserted into the split groove 11 is pivotally attached by a pin W passed through the connecting hole 12, and the rotation shaft 2 is freely rotatable in the fitting hole 15. The seat surface 2 is fitted into the rotating shaft 2 and is cut in the center of the outer surface of the rotating shaft 2.
A screw hole 22 whose axes are perpendicular to each other is formed in the center of the rod 1, and a male screw n at the tip of the rod m is screwed into this screw hole 22 from an enlarged diameter hole 13, and is prevented from loosening by a nut 3. .

Therefore, when the lever y swings in the left-right direction, the connecting member 1 changes its angle relative to the rod m around the rotation axis 2, as shown by the chain line in FIG. No unreasonable force is applied.

A second embodiment of the present invention is shown in FIGS. 5-7.

In this embodiment, the connecting member 1a is a press-molded product, and the other parts are the same as those in the first embodiment.

This connecting member 1a is made by bending a plate piece into a long U-shape, squeezing the central part from both sides to form a split 1lla, a connecting hole 12a perpendicular to this, and a circular fitting hole 15a, and further includes the above-mentioned Rectangular window holes 13a and 14a corresponding to the enlarged diameter hole 13 and the small diameter hole 14 of the first embodiment are formed before and after the fitting hole 15a.

The small diameter hole 14 of the first embodiment and the window hole 14a of this embodiment are for accommodating the male screw n of the rod m protruding to the other side of the rotation shaft 2.

The function of this embodiment is the same as that of the first embodiment, but since the connecting member is a press-molded product, it can be made lighter and has the advantage of being suitable for mass production.

FIG. 8 shows a modification of the second embodiment.

The connecting member 1b of this example is made by bending a plate piece to form a split groove 11b.
The corresponding pieces 17b, 17b are bent from both upper and lower sides of the base 16b in which the connecting hole 12b orthogonal to the connecting hole 12b is formed. A gap 13b corresponding to the hole 13 is formed, and fitting holes 15b, 15b are formed in the corresponding pieces 17b, 17b.

The rotation shaft 2 of this example is fitted into the fitting holes 15b, 15b.
124b has a collar 23b formed at one end and a groove 24b formed at the other end, and a snap ring 25b is fitted to 124b to prevent removal.

FIG. 9 shows another modification of the second embodiment, in which the connecting member IC of this embodiment has a base 16c that forms the split groove 11c in a simpler parallel structure than in the example shown in FIG. shape, further reducing weight.

As specifically explained in the above embodiments, the push-pull cable terminal connection device of the present invention is fixed to the terminal of the inner cable of the push-pull cable in which the inner cable is slidably inserted into the outer tube. In a connecting device for connecting a rod to a driving member or a driven member, a rotating shaft substantially perpendicular to the pin is fitted into the connecting member pivotally connected to the driving member or driven member by a pin so as to freely rotate about the axis thereof. The rod is fixed to the rotating shaft so that the axes are substantially perpendicular to each other, so when a conventionally known free joint such as a ball joint or cruciform joint is used, Compared to this, the structure is simpler and manufacturing is easier.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of a conventional coupling device, Figs. 2 to 4 show main parts of the first embodiment of the present invention, Fig. 2 is a cross-sectional view, and Fig. 3 is a longitudinal sectional view. Fig. 4 is an exploded perspective view, Figs. 5 to 7 show main parts of the second embodiment of the present invention, and Fig. 5 is a plan view.
6 is a side view, FIG. 7 is an exploded perspective view, FIG. 8 is an exploded perspective view of a modification of the second embodiment, and FIG. 9 is a perspective view of a connecting member of another modification of the second embodiment. It is. A: Push-pull cable, a: Outer tube, k:
inch cable, m: rod, y: lever, w: pin, 1
．． la, lb, lc: connection member, 2, 2b: rotation axis.

Claims (1)

[Scope of utility model registration request] In a coupling device for connecting a rod fixed to an end of an inch cable of a push-pull cable having an inch cable slidably inserted into an outer tube to a driving member or a driven member, the rod is pivotally connected to the driving member or the driven member by a pin. A rotating shaft in a direction substantially perpendicular to the pin is fitted into the connecting member, and the rod is fixed to the rotating shaft so that the axes are substantially perpendicular to each other. Push-pull cable terminal connection device.