JPH0480198A - Fitting construction for wire rope - Google Patents

Abstract

PURPOSE:To obtain a beautiful winding posture by fitting a wire rope in a vertical groove from the inner face side of a flange, hereafter pulling in the wire rope on the cylinder part side of a drum, fitting the wire head in the holding part of wire end of the vertical groove to fit the wire rope to the flange. CONSTITUTION:After a wire rope 4 is fitted in a vertical groove 6, namely a small diameter groove 7 and a large diameter groove 8 from the inner face side of a flange 3, the wire rope 4 is pulled on the cylinder part side of a drum and the wire head 5 is fitted in the large diameter groove 8 as shown with a full line, and hence the wire rope 4 can be fitted to the flange 3. In the fitting condition of the wire rope 4, the wire rope 4 and the wire head 5 are received in the flange 3 and not projected on the inside of the flange 3. Hereby, there is no obstacle at winding of the wire rope 4 around the drum 1, and a beautiful winding posture can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wire rope attachment structure for attaching a wire rope to a drum such as a winch.

(Prior art) Conventionally, in the case of winches mounted on off-float vehicles such as land cruisers, the wire rope is attached to the drum in two ways: one is attached to the cylindrical part (winding part) of the tram, and the other is attached to the flange of the drum. In the case of the type attached to a flange, the structure is generally as shown in FIGS. 1θ and 11.

In other words, the wire rope 21 is attached to one end of the wire rope 21 by caulking by fixing the metal fitting 22 to the screw hole 25 provided in the flange 24 of the drum 23 with a screw 26. It has a structure that allows it to be attached. Please note that the installation is done using metal fittings 22.
A flat portion 22a is formed around the screw hole to facilitate tightening of the screw 26.

(Problem to be Solved by the Invention) However, in the case of the above-mentioned conventional structure in which the wire rope 21 is attached to the flange 24, since the wire rope 21 is tightened with screws, there is a problem in that the attachment and detachment are difficult during installation or replacement. There is. In addition, there is a risk that the screws 26 may loosen due to repeated use of the winch or due to vibrations when the vehicle is running.Furthermore, since the metal fitting 22 is provided with a flat part 22a, the metal fitting 22 is greatly complicated to install, and the machining is difficult. It becomes troublesome.

In addition, since the vicinity of the end of the wire rope 21 extends toward the drum cylindrical portion along the inner surface of the flange, its presence affects the winding posture of the wire rope 21. In particular, when attaching the metal fittings 22 and screw heads to the wire rope 21, Since the wire rope 24 protrudes toward the inner surface of the flange 24 to be larger than its diameter, there is a problem that the wire rope 21 interferes with that portion during wire winding, causing the winding posture to collapse. In particular, winches mounted on vehicles are generally mounted on the front part of the vehicle (for example, on the bumper) so that they can be seen from the outside, so if the winding posture of the wire rope 21 is incorrect, the appearance of the vehicle may be spoiled. It also becomes.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a wire rope attachment structure that is excellent in attaching and detaching properties and is effective in obtaining a beautiful winding posture.

(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

That is, a vertical groove for the rope insertion extending approximately in the radial direction is formed in the flange of the drum, with the inner surface of the flange being open, and the enormous wire formed at the end of the wire rope is formed on the outer peripheral side of the drum. A wire head holder is provided with a width that allows the head to be inserted from the outer circumferential side, and a locking portion that locks with the wire head to prevent movement toward the inner surface of the flange and the drum cylindrical portion. It is structured as follows.

(Function) According to the structure of the wire rope installation of the present invention configured as described above, the wire rope is inserted (fitted) into the vertical groove from the inner surface of the flange, and then the wire rope is pulled into the drum cylindrical portion. The wire rope can be attached to the flange by fitting the wire head into the wire end holding portion of the vertical groove.

(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings.

First, Example 1 will be described based on FIGS. 1 to 4 and FIG. 9. Figure 9 is an external view of the mechanical winch mounted on the bumper at the front of the vehicle.
, O (power take-off) is used to drive the motor through a worm gear device and a clutch, and a clutch lever 2 allows the clutch to be turned on and off and the brake to be operated.

Next, the wire rope attachment structure for attaching the wire rope 4 to the flange 3 of the drum 1 will be explained based on FIGS. 1 to 4.

An enormous wire head 5 is provided at one end of the wire rope 4. The wire head 5 is fixed to the end of the wire rope 4 by, for example, wrapping a steel plate around the end of the wire rope 4 and then applying an external force such as squeezing it from the outside in the radial direction, ie, caulking. The outer end is processed so as to cover the end face of the wire.

On the other hand, the flange 3 of the drum 1 has a thick wall at the portion where the wire rope 4 is attached, and a vertical groove 6 for attaching the wire is formed in the thick wall portion 3a in the radial direction. This vertical groove 6 has an open side on the inner surface of the flange, and the cross section of the inner circumferential side of the drum is slightly larger than the diameter of the wire rope.
The drum has a small diameter groove 7 in the shape of a semi-circular arc, and the cross section on the outer circumferential side of the drum is slightly larger than the outer diameter of the wire head 5.
The large diameter groove 8 has a circular arc shape, and the arc centers of the small diameter groove 7 and the large diameter groove 8 are aligned.

The drum-side end of the small-diameter groove 7 is connected to the circumferential surface of the drum by a gently curved surface, and the opening width of the large-diameter groove 8 is at least large enough to allow the wire rope 4 to pass through. In other words, it is set to be approximately the same as the opening width of the small diameter groove 7.

That is, the vertical groove 6 for attaching the wire in this embodiment is divided in the radial direction into a small diameter groove 7 for inserting the wire rope and a large diameter groove 8 for holding the wire head 5. , the step surface between the small diameter groove 7 and the large diameter groove 8 is connected to the wire 1. The wall surface of the large-diameter groove 7 on the inner surface of the flange constitutes a locking portion 9 that prevents the wire head 5 from moving toward the inner circumferential side of the flange. It consists of

The structure of the wire rope installation in this embodiment is as described above, and therefore, the wire rope 4 is inserted into the vertical groove 6 from the inner surface of the flange as shown by the imaginary lines in FIGS. 1 and 2.
That is, after fitting the wire rope 4 into the small diameter groove 7 and the large diameter groove 8, the wire rope 4 is pulled into the drum cylindrical portion and the wire head 5 is fitted into the large diameter groove 8 as shown by the solid line in the figure. It can be attached to.

In this mounting state, the end face of the head is prevented from moving in the retracting direction by a locking part 9 formed of a stepped surface, and the movement of the head peripheral surface toward the inner surface of the flange is prevented by a locking part 10 formed of a wall surface. Thus wire rope 4
It can be held stably without coming out.

In addition, the wire rope 4 is attached to the drum 1 because the wire rope 4 and the wire head 5 fit within the flange 3 and do not protrude inside the flange 3.
It does not get in the way when winding up, and it is possible to wind it in a beautiful winding position.

When replacing the wire rope 4, push the wire rope 4 along the vertical groove 6 toward the outer circumference of the flange 3, remove the wire head 5 from the large diameter groove 8, and then push the wire rope 4 toward the inner surface of the flange. It can be extracted.

Incidentally, in the case of a winch mounted on a vehicle, the tram 1 is generally manufactured by casting aluminum alloy. Therefore, when the vertical groove 6 is set so that the radial direction toward the center of the tram is in the axial direction as in this embodiment, the so-called groove direction can be aligned with the die cutting direction, so that the vertical groove 6 can be This makes it possible to manufacture the parts simultaneously, eliminating the need for so-called post-processing, which is effective in improving manufacturability.

Next, a second embodiment of the present invention will be described based on FIGS. 5 to 7.

In this embodiment, the vertical groove 6 for attaching the wire formed in the flange 3 has a substantially semicircular arc-shaped or inverted U-shaped cross section over its entire length, while the vertical groove 6 is formed on the outer peripheral side of the flange. A pin insertion groove 11 parallel to the longitudinal groove 6 is formed on the inner wall surface toward the inner surface of the flange so as to face each other. However, the groove width of the vertical groove 6 in this case is set to a size that allows the wire head 5 to be fitted into the flange from the inner surface side.

Therefore, in the case of this embodiment, the wire rope 4 is fitted into the vertical groove 6 of the flange 3 as shown by the imaginary line in FIG. 5, and then the locking pin 12 is inserted into the pin insertion groove 11. Then, by drawing the wire rope 4 toward the drum cylinder side, the wire head 5 is inserted into the vertical groove 6 as shown by the solid line in the figure, and the edge of the wire head 5 and the wire head 5 of the wire rope 4 are connected. The root of the base is locked to the pin 12 and fixed. That is, the pin 12 functions as the locking portions 9 and 10 described in the previous embodiment.

Furthermore, FIG. 8 shows an example of a change in the orientation of the vertical grooves 6. That is, in the above-mentioned embodiments 1 and 2, the vertical grooves 6 were set in the radial direction in consideration of the direction of die cutting during casting, or in this modified example, the vertical grooves 6 were set in the radial direction of the drum 1. The structure of the vertical groove 6 itself is the same as that of the first embodiment.

Therefore, when the wire rope 4 is installed in the tangential direction of the drum 1, the wire rope 4 will not bend, so the winding posture, especially the winding start posture, should be kept neat. I can do it.

As mentioned above, the type of winch that attaches the wire rope 4 to the flange 3 is different from the type of winch that attaches the wire rope 4 to the tram 1, as compared to the type that attaches the wire rope 4 to the tram 1. This is effective when maintaining the required airtightness.

In the illustrated embodiment, the vertical groove 6 for attaching the wire has an arcuate cross-sectional shape, but it is not necessarily limited to this shape, and may be a rectangular shape.

Further, the structure of wire rope attachment using such a vertical groove 6 is not limited to the mechanical winch shown in Fig. 9, but can be applied to any type of winch equipped with a drum and a wire rope. .

(Effects of the Invention) As detailed above, according to the present invention, the wire rope can be easily attached to the flange by simply fitting the wire head of the wire rope into the vertical groove formed in the flange of the drum. This makes it possible to improve the ease of attachment and detachment compared to conventional screw fixing. In addition, since the wire rope attached to the flange does not protrude to the inner surface of the flange, including the wire head, it does not get in the way of winding the wire rope, and it is possible to wind it up neatly without losing your posture.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of the wire rope attachment in Example 1 of the present invention, FIG. 2 is a vertical sectional view, FIG. 3 is a plan view, and FIG. FIG. 5 is a vertical sectional view showing the structure of the wire rope installation according to the second embodiment of the present invention, FIG. 6 is a plan view of the same, and FIG. 8 is a perspective view showing an example of a change in the vertical groove setting direction, FIG. 9 is an external view of a mechanical winch mounted on a vehicle, FIG. 10 is an exploded perspective view showing the structure of a conventional wire rope installation, and FIG. The figure is a side view of the assembled state. ■...Tram 3...Flange 4...
Wire rope 5...Wire head 6...Vertical groove 9. lO...Locking part Applicant Toyota Industries Corporation Representative Patent attorney Hidehiko Okada (3 others) 1...Drum 3...Franz 4...Wire rope 5...Wire head 6... Vertical groove 9.10...Locking part diagram

Claims (1)

[Claims] A vertical groove for the rope insertion extending approximately in the radial direction is formed in the flange of the drum, with the inner surface of the flange being open, and a huge wire head formed at the end of the wire rope is formed on the outer peripheral side of the drum in this vertical groove. A wire rope equipped with a wire head holding part that is large enough to be fitted from the outer circumferential side and has a locking part that locks with the wire head to prevent movement toward the inner surface of the flange and the cylindrical part of the drum. Mounting structure.