JPH0147395B2 - - Google Patents

Description

[Detailed description of the invention] FIELD OF THE INVENTION The present invention relates to cable guides.

Conventionally, cable guides are broadly classified into sliding guide type and rotating guide type as described below.

First, the sliding guide type, for example,
As shown in the longitudinal cross-sectional view in Figure 2 and the plan view in Figure 2, a cable guide 2 is made of plate material in the form of two bell mouths joined back to back, and cables 3 such as cables and electric wires led from pulleys 1 etc. are made inside the cable guide 2. This is to ensure the permissible bending radius R for the entire circumference, for example, in each of the directions A, A, and C. In this type, the third
As shown in the vertical cross-sectional view in FIG. 4 and the plan view in FIG.

Next, the rotary guide type has a groove for receiving the cable 3 and a shaft 1, as shown in the vertical sectional view of FIG. 6, the plan view of FIG. 7, and the partially enlarged view of FIG.
A frame plate 11 and a frame plate 1 in which guide sheaves 9, 9 that can rotate around 0 are arranged side by side with grooves facing each other on the same plane.
A plurality of horizontal rollers 12 and vertical rollers 13 attached to the roller 1 and an annular rail 14 that guides these rollers.
The radius R of the guide sheave 9 is greater than or equal to the allowable bending radius of the cable 3, and the frame plate 11 is configured to be able to rotate around the central axis 15 along the annular rail 14, so that the cable 3 can rotate around the central axis 15. The allowable bending radius is ensured in the entire circumferential direction.

However, such cable guides have the following drawbacks.

As shown in Fig. 5, in the sliding guide type, the cable 3 contacts the curved surface of the guide 6 with a large radius, so when it receives a large tension, it deforms as shown in the flat cross section 5 shown by the chain line. It is easily damaged, and since it slides along the guide 6, it is easily rubbed and worn out.

Rotating guide type cable guides have large cable guides and are difficult to use, especially for products with severe weight and volume restrictions, such as removable deck machinery and submersibles used at sea.

The present invention was proposed in view of the above circumstances, and provides a cable guide that does not become flat in cross section when the cable is subjected to tension, does not rub the contact surface, and is designed to reduce the size and weight of the guide itself. The purpose is to provide.

To this end, the present invention has front end parallel eyes projecting outward in the axial direction at both ends of the diameter of the front end opening, and parallel eyes projecting outward in the axial direction at both ends of the diameter of the rear end opening. Consisting of a plurality of short cylindrical rings each having a rear end parallel eye with a phase orthogonal to the front end parallel eye, the rear end parallel eye of one of the adjacent rings is pivoted to the front end parallel eye of the other ring body with a pin. A flexible tubular body capable of curving along a certain circular arc determined by partial contact between adjacent ring bodies; It is characterized by comprising a plurality of grooved sheaves arranged in the radial direction of the ring body and forming a cable guide surface at the center of the ring body.

An embodiment in which the present invention is applied to a cable for an unmanned underwater vehicle will be explained with reference to the drawings. Fig. 9 is a side view thereof, and Fig. 10 is a side view when used in another plane orthogonal to the plane of Fig. 9. 11 is a plan view of the single guide shown in FIG. 9, and FIG. 12 is a longitudinal sectional view of FIG. 11.

In the above figure, the same symbols as in Figs. 1 to 8 indicate the same members as in the same figure, and 16 is a plurality of short cylindrical unit rings whose upper and lower end openings are parallel to the upper end at both ends of the diameter, respectively. An eye 20 and a lower end parallel eye 21 are respectively provided to protrude outward in the axial direction,
The upper end parallel eye 20 and the lower end parallel eye 21 are mutually
They are located at positions with a phase difference of 90°.

Reference numeral 17 denotes a terminal ring whose upper end is fixed to the fixing member 18, and has substantially the same structure as the unit ring 16, or the upper end parallel eye 20 is omitted.

Reference numeral 19 denotes 4 which is pivotally connected with a pin 24 to a side plate 23 protruding from the inner periphery of each unit ring 16 and end ring 17.
The grooved sheaves 19 are arranged on the radial axis plane of the rings 16 and 17 at equal intervals of 90°, and form a circular guide surface for cable guidance at the center of the rings. do.

Reference numeral 22 denotes a pin for pivotally connecting the end ring body 17 and the unit ring body 16, and the lower end parallel eye 21 and the upper end parallel eye 22 of the adjacent unit ring members 16, respectively.

In such a device, each ring body 16, 17 has a parallel eye pivotally connected by a pin 22, so that it forms a flexible cylindrical member as a whole, and when this is bent, each ring body 16, The opposing ends of 17 are inclined by an angle θ and partially abut at point a, and are curved along an arc with a radius R as a whole.

In such a device, the cable 3 is threaded through a central circular guide surface made of a grooved sheave in each ring and pulled in any direction.

Therefore, as shown in FIGS. 9 and 10, by appropriately selecting the relative rotation angle θ between the terminal ring body 17 and the adjacent unit ring bodies 16 and between the adjacent unit ring bodies 16, a plurality of connected The bending radius R is limited so that the unit ring body 16 as a whole does not bend below the allowable bending radius of the cable 3.

At that time, the unit ring 1 adjacent to the end guide 17
Since the central axes of the pins 22 connecting the lower end parallel eye 21 and the upper end parallel eye 20 between 6 or adjacent unit ring bodies 16 have a phase difference of 90° from each other,
It follows the in-plane curvature shown in FIG. 9 as well as the in-plane curvature shown in FIG. 10 perpendicular to this.

As shown in FIGS. 11 and 12, the grooved sheave of each unit ring has a groove that approximately matches the outer diameter of the cable 3 and can be rotated around the pin 24, so that the cable 3 is flattened. It is possible to move smoothly and lightly through each unit ring body 16 and the end guide 17 without rubbing the abutting member.

According to such a device, the following effects can be achieved.

(1) Prevents the cable from becoming flattened, making it less likely to be damaged.

(2) The cable is less susceptible to wear and tear as the cable is prevented from sliding.

(3) The cable guide can be made smaller and lighter.

Although an embodiment in which the present invention is applied to a cable for an unmanned underwater vehicle has been described above, the present invention can also be applied to a removable deck machine and the like.

In short, according to the present invention, the front end parallel eye is provided at both ends of the diameter of the front end opening to project outward in the axial direction, and the parallel eye is provided at both ends of the diameter of the rear end opening to project outward in the axial direction. A plurality of short cylindrical annular bodies each having a rear end parallel eye having a phase orthogonal to the front end parallel eye, the rear end parallel eye of one of the mutually adjacent annular bodies being pivoted by a pin to the front end parallel eye of the other annular body. a flexible tubular body that can be bent along a certain circular arc determined by partial contact between adjacent ring bodies when attached to each other; By having multiple grooved sheaves arranged in the radial direction of the ring body and forming a cable guide surface in the center of the ring body, the cables are sufficiently protected and the main body itself is made smaller and lighter. Since a cable guide is obtained, the present invention is extremely useful industrially.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a known sliding type plate cable guide, Fig. 2 is a sectional view along the line shown in Fig. 1-, and Fig. 3 is a longitudinal sectional view of a known sliding type pipe cable guide. Figure 4 is a sectional view along Figure 3-, Figure 5 is a partially enlarged view of the guide surface in Figure 2,
FIG. 6 is a longitudinal sectional view of a known rotary type cable guide, FIG. 7 is a sectional view taken along the line in FIG. 6, FIG. 8 is a partially enlarged view of the guide sheave, and FIG. A side view showing the embodiment; FIG. 10 is a side view showing the same cable guide used in another plane perpendicular to the plane shown in FIG. 9; FIG. 11 is a plan view of the guide shown in FIG. 9; FIG. 12 is a longitudinal sectional view of FIG. 11. 3...Cable, 16...Unit ring, 17...
Terminal ring body, 18... Fixed member, 19... Grooved sheave, 20... Upper end parallel eye, 21... Lower end parallel eye, 22... Pin, 23... Side plate, 24... Pin.

Claims (1)

[Claims] 1. A front end parallel eye is provided at both ends of the diameter of the front end opening, each protruding outward in the axial direction, and a front end parallel eye is provided at both ends of the diameter of the rear end opening, respectively, projecting outward in the axial direction, and is perpendicular to the front end parallel eye. It is made up of a plurality of short cylindrical ring bodies each having a parallel eye at the rear end of the adjacent ring body, and the rear parallel eye of one of the adjacent ring bodies is pivotally connected to the parallel eye at the front end of the other ring body with a pin. a flexible tubular body capable of curving along a certain circular arc determined by partial abutment of the bodies; A cable guide device comprising: a plurality of grooved sheaves arranged at the center of the annular body to form a cable guide surface.