JPH0213278Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a mechanism for preventing excessive unwinding of a wire rope that winds up and unwinds a spare tire in a spare tire holding device that holds a spare tire in an automobile. .

<Prior art> The excessive rewinding prevention mechanism of the spare tire holding device is as follows:
As disclosed in Japanese Utility Model Application Publication No. 61-106487, a mounting hole is formed at the bottom of a rope groove formed on the outer periphery of a wire rope hoisting foil, and the upper end of the wire rope is inserted into the mounting hole of the foil. Insert the wire rope and fix it with a fixture, fit the stop tube near the top end of the wire rope, form a recess in the bottom of the rope groove of the foil into which the stop tube is half-immersed, and when the wire rope is unwound, A stop plate is provided at a lower position close to the position where the stop tube starts to come out of the recess of the foil,
When the wire rope is finished being unwound, the stop tube fitted onto the wire rope comes into contact with the stop plate.

<Problems to be Solved by the Invention> However, this excessive unwinding prevention mechanism has a mounting hole and a fitting that connect the upper end of the wire rope to the foil. This requires a stop tube and a stop plate for stopping the wire rope, and a recess for housing the stop tube when winding up or unwinding the wire rope, making the structure complicated and requiring a lot of effort to manufacture.

The purpose of the present invention is to solve the above-mentioned conventional problems.

<Means for Solving the Problems> The present invention is an excessive rewinding prevention mechanism that also serves as a mechanism for connecting the upper end of a wire rope to a foil in a spare tire holding device.

That is, a deceleration hoisting mechanism equipped with a wire rope hoisting foil is installed inside the case, the upper end of the wire rope is connected to the foil inside the case, and the lower end of the wire rope for suspending the spare tire is suspended from the case. In this spare tire holding device, the mounting shaft is rotatably attached to the foil by arranging it in a rope groove formed on the outside of the foil parallel to the rotation center axis of the foil, and the upper end of the wire rope is attached to the mounting shaft. It is installed along the radial direction and rotatably connected to the foil from the circumferential direction to the radial direction, and a wing-shaped stopper rod is provided at the end of the mounting shaft to protrude parallel to the upper end of the wire rope, and the side surface of the foil is and the inner surface of the case so as to be rotatable together with the upper end of the wire rope, and the inner surface of the case has two winding stopping parts protruding at intervals in the radial direction of the foil, so that the wire rope can be hoisted or wound. During unwinding, the winding stop bar is arranged in the circumferential direction of the foil and passes between the two winding parts, and when the wire rope is finished unwinding, the winding stop bar is arranged in the radial direction of the foil and hits both winding parts. This is an excessive rewinding prevention mechanism characterized by having a structure in which the two parts are in contact with each other.

<Function> In the excessive unwinding prevention mechanism of the spare tire holding device according to the present invention, when the wire rope is finished unwinding, the wire rope is let out from the rope groove of the foil, and the upper end of the wire rope is attached to the foil together with the winding rod. The winding rod rotates in the radial direction from the circumferential direction of the foil, and the winding stop bars arranged in the radial direction of the foil come into contact with both winding stops, stopping the rotation of the foil and stopping the unwinding of the wire rope.

Therefore, excessive unwinding, where the unwinding operation is continued without realizing that the unwinding of the wire rope has been completed, and the wire rope is wound around the foil in the opposite direction, is prevented.

<Example> As shown in FIGS. 1 to 3, the spare tire holding device equipped with the excessive rewinding prevention mechanism of this example has a drive shaft 2 mounted in the center of the front wall and rear wall of the case 1. As shown in FIG. 1, a foil 3 is pivotally supported on the narrow diameter part of the drive shaft 2 located on the rear wall side of the case 1, and a rope groove 4 is provided around the outer periphery of the foil 3 for winding a wire rope in multiple layers. A support part 5 is formed on the inner surface of the back wall of the case 1 in a ring shape concentric with the foil 3, and the side surface of the foil 3 on the case back wall side is slidably contacted with the support part 5 on the back wall of the case 1. A sun internal gear 6 is fixed concentrically to the side surface of the foil 3 on the side of the front wall of the case 1, and a planetary external gear 8 is pivotally supported on the concentric cam 7 of the drive shaft 2 located on the front wall of the case 1. Then, the solar internal gear 6 and the planetary external gear 8 are meshed, and the regulation plate 9 is fixed to the side surface of the planetary external gear 8 on the case front wall side.
The side surface of the regulating plate 9 on the case front wall side slides into contact with the inner surface of the front wall of the case 1, and the regulating pin 10 protruding from the inner surface of the front wall of the case 1 is regulated as shown in FIGS. It is inserted into the groove at the tip of the plate 9 to restrict the rotation of the planetary external gear 8.

In other words, it constitutes a deceleration hoisting mechanism in which the wheel 3 rotates at a deceleration rate as the drive shaft 2 rotates.

At the bottom of the rope groove 4 of the foil, as shown in FIG. and then insert the mounting shaft 11 into the rope groove 4.
The mounting shaft 11 is rotatably mounted on the mounting shaft 11, and a mounting hole 12 is provided in the center of the mounting shaft 11 along the radial direction thereof.

As shown in FIGS. 1 and 3, the upper end of the wire rope 13 is fitted into the attachment hole 12 of the attachment shaft, and the upper end of the wire rope 13 is attached to the attachment shaft 11 along its radial direction. It is rotatably connected to the foil 3 from the circumferential direction to the radial direction.

As shown in FIGS. 2 and 3, a rope insertion hole 14 is formed through the peripheral wall of the case 1, and the lower end of the wire rope 13 is suspended from the rope insertion hole 14. Although not included, the hanging rod on which the spare tire is mounted is connected.

At the end of the mounting shaft 11 exposed on the rear wall side of the case 1, there is a stopper bar 15 as shown in FIGS. 1 and 3.
are connected in parallel with the upper end of the wire rope 13, and both ends of the winding rod 15 protrude on both sides of the mounting shaft 11, so that the wing-shaped winding rod 15 is connected to the wire rope 13 between the foil 3 and the back wall of the case 1. It is arranged so that it can rotate with the upper end of the.

As shown in FIGS. 3 and 4, two winding stops 16 are provided on the inner surface of the back wall of the case 1, and both winding stops 16 are connected to the rope insertion hole 14 and the drive shaft 2. They are arranged at intervals shorter than the length of the stopper rod 15 and longer than its width in the radial direction of the foil 3 that ties the ends.

When winding up or unwinding the wire rope 13, the third
As shown in the figure, the winding stop bar 15 is arranged in the circumferential direction of the foil 3 and passes between both winding stop parts 16, and when the wire rope 13 is finished unwinding, the winding stopper 15 is disposed in the circumferential direction of the foil 3, and when the wire rope 13 is finished unwinding, the winding stopper 15 is disposed in the circumferential direction of the foil 3. A rod 15 is arranged in the radial direction of the foil 3, and both ends of the stopper rod 15 are in contact with both stoppers 16.

In the figure, 17 is a base for engaging the operating handle, 18 is a pin for preventing the drive shaft from coming off, and 19 is a mounting hole.

In the excessive rewinding prevention mechanism of this example, when the wire rope 13 is wound up or unwound, at least a portion near the upper end of the wire rope 13 is wound around the rope groove 4 of the foil, as shown in FIG. The upper end of the rope 13 is attached to the foil 3 together with the stopper bar 15.
The stopper bar 15, which is arranged in the circumferential direction of the foil 3, passes between both the stoppers 16,
The rotation of the foil 3 continues, and the winding or unwinding of the wire rope 13 continues.

When the wire rope 13 is finished unwinding, the portion near the upper end of the wire rope 13 that has been wrapped around the rope groove 4 of the foil separates from the bottom surface of the rope groove 4, and the fourth
As shown in the figure, the upper end of the wire rope 13 rotates from the circumferential direction to the radial direction of the foil 3 together with the stopper bar 15, and both ends of the stopper bar 15 arranged in the radial direction of the foil 3 are connected to both stoppers 16. , the rotation of the foil 3 stops, the unwinding of the wire rope 13 stops, and the unwinding rotation of the drive shaft 2 becomes impossible.

Therefore, the operator who was performing the unwinding operation immediately notices that the unwinding of the wire rope 13 has been completed.

That is, the operator will not continue the unwinding operation without noticing the end of unwinding the wire rope 13 and wind the wire rope 13 around the foil 3 in the opposite direction.

<Effects of the invention> The excessive unwinding prevention mechanism of the spare tire holding device according to the invention also serves as a mechanism for connecting the upper end of the wire rope to the foil, so the structure is simplified and much time and effort is required to manufacture it. does not apply.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a spare tire holding device equipped with an excessive rewinding prevention mechanism according to an embodiment of the present invention. FIG. 2 is a front view of the spare tire holding device. FIG. 3 is a rear view of the spare tire holding device. FIG. 4 is a cross-sectional view taken along the line -- in FIG. 1, and is a cross-sectional view showing the state when the wire rope is finished being unwound. 1: Case, 3: Foil, 4: Rope groove, 1
1: Mounting shaft, 13: Wire rope, 15: Stopping rod, 16: Stopping part.

Claims (1)

[Scope of Claim for Utility Model Registration] A wire rope that is equipped with a deceleration hoisting mechanism equipped with a wire rope hoisting foil inside a case, the upper end of the wire rope is connected to the foil inside the case, and a spare tire is suspended from the wire rope. In the spare tire holding device, the lower end of which hangs from the case, the mounting shaft is rotatably attached to the foil by arranging it in a rope groove formed on the outer periphery of the foil and parallel to the center axis of rotation of the foil, and the upper end of the wire rope is attached to the mounting shaft along its radial direction, and is rotatably connected to the foil from the circumferential direction to the radial direction, and a wing-shaped stopper rod is provided at the end of the mounting shaft protruding parallel to the upper end of the wire rope. The wire rope is placed between the side surface of the foil and the inner surface of the case so as to be rotatable together with the upper end of the wire rope, and the inner surface of the case is provided with two winding stops protruding from each other at intervals in the radial direction of the foil. When winding or unwinding the rope, the winding stop bar is arranged in the circumferential direction of the foil and passes between the two winding stops, and when the wire rope is finished winding, the winding stop bar is arranged in the radial direction of the foil. An excessive unwinding prevention mechanism characterized in that the mechanism is configured such that the winding stop portion comes into contact with both winding stops.