JPH107329A - Initial winding torque adjusting device for reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the initial winding torque of a reel by coaxially providing a spindle fixed to a drum, and a colllar connected to the center part of a spiral spring, notching the outer peripheral part of the spindle, or the inner circumferential part of the collar, and putting a pin into the notch. SOLUTION: A spindle fixed to a drum, and a collar fixed to the central part of a spiral spring are coaxially provided, and a notch is formed on the outer peripheral part of the spindle, or on the inner peripheral part of the collar, to put a pin into the notch. A portion having a narrow notch is made narrower than the pin diameter, and a portion having a wider notch is made wider than the pin diameter. When the pin is in a portion having a narrow notch, the spindle and the collar are made to rotate together, and when the pin is in a wide portion, the spindle and the collar are made to rotate independently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reel for winding a cable, a hose, a wire or the like by driving a mainspring.

[0002]

2. Description of the Related Art In a reel driven by a mainspring spring, it is necessary to apply an initial tension to a cable or a hose in the initial state where a cable or the like is wound up. Before the connection, the drum must be rotated several times in the pull-out direction to give an initial winding torque.

[0003]

A conventional reel requires an initial winding to apply an initial winding torque to a cable or the like. Further, after the connection of the cable or the like, the initial winding torque cannot be adjusted.

[0004] In the reel having the initial winding torque adjusting device of the present invention, the initial winding torque can be adjusted after connecting a cable or the like.

[0005]

In order to achieve the above object, an initial winding torque adjusting device of the present invention concentrically connects a shaft fixed to a drum and a collar connected to a center portion of a mainspring spring. Hold the shaft and make a cut in the outer periphery of the shaft or the inner periphery of the collar, and insert the pin into it.

When a cut is made in the shaft, as shown in FIG. 1, the cut becomes wider in the drawing direction, and when a cut is made in the collar, as shown in FIG. 2, the cut becomes narrower in the drawing direction. ing. The narrow part of the cut is narrower than the diameter of the pin, and the wide part is wider than the diameter of the pin. When the pin is in the narrow part, the pin is pinched between the shaft and the collar, and the shaft and the collar rotate together.When the pin is in the wide part, the pin is not pinched, so the shaft and the collar are Do not rotate together.

When a notch is formed in the shaft, in order to increase the initial winding torque, the narrow side of the notch is made lower, and only the collar is rotated in the drawing direction without rotating the shaft. To weaken the initial winding torque, make the wide side of the notch lower, rotate the collar a little in the pull-out direction, remove the pin sandwiched between the notches, and rotate the collar in the winding direction. When the initial winding torque is reached, the shaft is rotated half a turn in the pulling-out direction so that the narrower cut is lower, so that the pin is pinched by the cut.

When a notch is formed in the collar, in order to increase the initial winding torque, if only the collar is rotated in the pull-out direction without rotating the shaft and an appropriate initial winding torque is obtained, the narrower the notch is, So that the pin is pinched by the notch. To weaken the initial winding torque, turn the wide side of the notch downwards, slightly rotate the collar in the winding direction, remove the pin sandwiched between the notches, and rotate the collar in the pulling direction without rotating the collar. Rotate, and when the proper initial winding torque is reached, rotate the collar a half turn so that the narrow notch is down and the pin is pinched by the notch.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 shows an embodiment in which the shaft is cut. The shaft 1 is fixed to the arm 5 via a bearing, and the shaft and the drum 4 are fixed and rotate together. Collar 2 is fitted on the shaft, there is a notch on the shaft,
Pin 3 is in the notch. Spring is spring case 7
The outer peripheral part of the spring is fixed to the spring case, and the inner peripheral part is fixed to the collar. The spring case is fixed to the arm. When the drum is rotated in the pull-out direction, the spring is tightened.

FIG. 2 shows an embodiment in which the notches of the embodiment shown in FIG. 1 are inserted into a collar instead of a shaft.

The cut may be formed by a straight line as shown in FIG.

[0012]

Since the present invention is configured as described above, it has the following effects.

[0013] The initial winding torque can be adjusted.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment in which a cut is made in a shaft.

FIG. 2 is a perspective view showing an embodiment when a cut is made in a collar.

FIG. 3 is an enlarged view of an axis, a collar, and a pin showing an embodiment in which a cut is formed by a straight line

[Explanation of symbols]

 1 shaft 2 pin 3 collar 4 drum 5 arm 6 mainspring 7 spring case 8 cable, hose, wire, etc.

Claims (1)

[Claims] An initial winding torque adjusting device provided with a notch on a shaft or a collar, and a reel having the device.