JPH0798613B2 - Long material winding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a long object winding device that winds and pulls out long objects such as ropes and wires for hanging competition nets and curtains.

<Prior Art> A conventional long object winding device used for the above purpose is
It has a structure in which a rotating body of a drum around which a long object is wound is manually or automatically rotated. On the other hand, the self-weight and the weight of the suspended object act on the long object, and the external force in the pulling direction acts on the long object. Therefore, it is necessary to lock the free rotation of the rotating body, and a lock mechanism including a ratchet and a ratchet pawl is mounted. This locking mechanism locks the unidirectional rotation of the rotating body in the pull-out direction of the long object by engaging the ratchet claw with the ratchet, but does not work when the long object is wound.

<Problems to be Solved by the Invention> Therefore, in the conventional device, the ratchet and the ratchet pawl are always meshed with each other, and noise is generated due to the collision between the ratchet and the ratchet pawl when winding a long object. Also, because it is a lock due to the engagement of the ratchet and ratchet pawl,
It is not possible to lock steplessly, and it is not possible to finely adjust the pull-out length or winding length of long objects. Further, when the ratchet claw is removed from the ratchet, the rotating body inertially rotates due to the weight of the long object, which unwinds the long object more than necessary.

Therefore, the present invention solves the problems of the prior art as described above, and enables a silent operation, a stepless fine adjustment, and an unintentional rotation of a long object winding device. It is intended to be provided.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a lock release mechanism for unlocking the lock of the rotating body by using a spring to lock the rotation of the rotating body. Therefore, the long object winding device according to the present invention is composed of a rotating body around which a long object is wound, a spring that locks the rotation of the rotating body by frictional force, and a pair of members that are screwed together. The structure further comprises a lock release mechanism that linearly moves in the axial direction of the rotating body and the other releases the frictional force of the spring by the movement, and in this configuration, the one member of the lock release mechanism is further provided. Is provided with a stopper that engages with and stops the movement of the member.

<Operation> With the above-described structure, the spring locks the rotation of the rotating body, and the lock release mechanism works to release the lock by the spring. Further, the stopper acts so as to maintain the unlocked state and bring the rotating body into the free rotation state.

<Example> Hereinafter, an example of the present invention will be specifically described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols and redundant description will be omitted.

1 and 2 are a sectional view and a front view of an embodiment of the present invention. The casing 3 is formed by stacking a pair of left and right side covers 1 and 2. The central portion of the left side lid 1 is raised from the peripheral portion, so that the casing 3 is hollow. Also, the left side lid 1 and the right side lid 2
A pair of upper and lower bolt holes 4 are formed in the overlapping portion with and the casing 3 can be assembled by inserting a bolt into the bolt hole 4 and screwing a nut. A drum-shaped rotating body 5 is provided in the casing 3.
A spring 6 inserted into the rotating body 5 and a lock release member 7 provided inside the spring 6. The rotary body 5 has a shaft portion 8 whose right end is supported by the right side lid 2 and a drum portion 9 which is formed to have a diameter larger than that of the shaft portion 8 and around which an elongated object 10 is wound. It is integrally molded so that Here, a pair of left and right flanges 9a extending in the radial direction at a predetermined interval are formed on the drum portion 9, and the long object 10 is wound around the outer peripheral surface of the drum portion 9 between the flange portions 9a. It

The spring 6 is inserted in the drum portion 9 of the rotating body 5. A coil spring having a rectangular cross section is used as the spring 6, and the coil portion is wound in the direction in which the rotating body 5 rewinds the elongated object 10, and the diameter thereof is slightly larger than the inner diameter of the drum portion 9. It is wound so as to have a large diameter, and when it is inserted into the drum portion 9, it is carried out in a state in which it is slightly wound so that the coil diameter becomes small. Therefore, when the winding tightening is released after the insertion into the drum portion 9, the spring 6 is pressed against the inner surface of the drum portion 9, and a frictional force acts between the spring 6 and the inner surface of the drum portion 9. On the other hand, one end 6a of the spring 6 is inserted into the hook groove 1a formed inside the left side lid 1, whereby the spring 6 is restrained from rotating. Therefore, the frictional force of the spring 6 acts on the drum portion 9 to lock the rotation of the rotating body 5 in only one direction.

The unlocking member 7 has a double cylinder structure composed of an inner cylinder 11 and an outer cylinder 12. A male screw is engraved on the outer peripheral surface of the inner cylinder 11 and a female screw is engraved on the inner peripheral surface of the outer cylinder 12. These are screwed together and inserted between the shaft portion 8 of the rotating body 5 and the spring 6. Here, the left end side of the inner cylinder 11 has an approximately square shape, and is inserted into the square hole 11b of the side lid 1 to restrain rotation and extend outward of the casing 3, and its end portion. Bush 13 is fitted in. Insertion hole 13 in bush 13
The shaft portion 8 of the rotating body 5 is formed so that a penetrates therethrough.
A square hole 14 communicating with the insertion hole 13a is formed on the left end surface. The end of a tool such as a wrench inserted from the insertion hole 13a is fitted into the square hole 14, and when the tool is rotated, the rotating body 5 is rotated to wind the long object 10. Further, the other end 6b of the spring 6 is inserted and locked to the outer surface of the outer cylinder 12, and when the outer cylinder 12 rotates, the rotational force is transmitted and the spring 6 is tightened. By this tightening, the coil portion of the spring 6 is reduced in diameter and the pressure contact of the rotating body 5 with the drum portion 9 is released, so that the rotating body 5 becomes rotatable.
The outer cylinder 12 is rotated by linearly moving the inner cylinder 11 in the axial direction of the rotating body 5, and this linear movement is converted into rotational movement. In order to facilitate such conversion, the male screw and the female screw are engraved so that the lead angle becomes large. In FIG. 1, reference numeral 15 is a washer inserted between the drum portion 9 of the rotating body 5 and the right side lid 2.

Next, the operation of this embodiment will be described. In the state shown in FIG. 1, the coil portion of the spring 6 is pressed against the drum portion 9 of the rotating body 5 from the inside, and the rotating body 5 is locked in one direction by the frictional force of the spring 6. When the bush 13 is pressed in this state to apply a pressing force in a linear direction to the inner cylinder 11, a rotational force acts on the outer cylinder 12 screwed into the inner cylinder 11. Outer cylinder 12
The other end 6b of the spring 6 is locked to the spring 6, and the diameter of the spring 6 is reduced by the rotational force of the outer cylinder 12 to separate from the inner surface of the drum portion 9 of the rotating body 5. As a result, the frictional force of the spring 6 is released and the rotation lock of the rotating body 5 is released. Therefore, the long object 10 rotates the rotating body 5 by its own weight or the weight of the hanging object, and the withdrawal is performed. When the pressing force on the bush 13 is released, the spring 6 rotates the outer cylinder 12 in the opposite direction by the restoring force to expand the diameter, so that the spring 6 is pressed against the drum portion 9 of the rotating body 5 and the frictional force of the rotating body 5 causes The rotation is locked. On this occasion,
The inner cylinder 11 is moved outward by the reverse rotation of the outer cylinder 12.
As a result, the withdrawal of the long object 10 is stopped. Next, when the tool is inserted into the square hole 1 on the opposite side of the shaft portion 8 of the rotating body 5 through the insertion hole 13a of the bush 13 and the rotating body 5 is rotated, the long object 10 is moved to the drum portion 9 by this rotation. It is wound up. In this case, the spring 6 is wound in the direction in which the long object 10 is unwound, and the rotation of the rotating body 5 is in the direction of reducing the diameter of the coil portion of the spring 6. The frictional force is reduced, slippage occurs between them, and the rotating body 5 rotates in the same direction, so that the winding can be smoothly performed. Then, when the winding operation is stopped, the rotating body 5 is rotationally locked by the frictional force of the spring 6, the rewinding of the long object 10 is stopped, and the winding state is maintained.

In this embodiment, the frictional force of the spring 6 causes the rotor 5 to move.
Because of the structure that locks the rotation of, the length of winding and withdrawing the long object 10 can be adjusted steplessly, fine adjustment is possible, and noise is not emitted. Further, the rotation of the rotating body 5 is locked by the frictional force of the spring 6 except for the pressing of the unlocking member 7 and the operation of the rotating body of the tool, so that the rotating body 5 does not rotate carelessly.

3 and 4 are a sectional view and a front view of another embodiment of the present invention. The left side lid 1 that constitutes the casing 3
Is formed into a cylindrical shape, and the rotating body 5, the spring 6, and the unlocking mechanism 7 are mounted inside. A small-diameter stopper hole 16 is formed on the left end side of the inner cylinder 11 of the lock release mechanism 7. A stopper 17 is attached to the front wall of the left side lid 1. The stopper 17 includes a stopper pin 18 whose lower end contacts the outer surface of the inner cylinder 11, and a compression spring 19 which urges the stopper pin 18 downward. Stopper Pin
The tip of the stopper 18 is inserted into a stopper hole 16 formed in the inner cylinder 11, and when the stopper hole 16 reaches below the stopper pin 18 by the linear movement of the inner cylinder 11, the stopper pin 18 is compressed. It is adapted to be inserted into the stopper hole 16 by the biasing force of the spring 19. In such a state, since the linear movement of the inner transfer 11 is stopped, the linear movement of the inner cylinder 11 maintains the diameter-reduced state of the spring 6 whose coil portion has the diameter reduced. Therefore, the spring 6 does not come into pressure contact with the drum portion 9 of the rotating body 5 and no frictional force acts, so that the elongated object 10 is continuously pulled out. To stop this pulling out, pull up the stopper pin 18 and pull out from the stopper hole 16,
Since the spring 6 is restored to its original state by this withdrawal, the frictional force of the spring 6 acts on the rotating body 5 to lock the rotation, and the withdrawal is stopped.

In this embodiment, since a long object can be pulled out without continuing the pressing force to the bush 13, there is an advantage that the operability is improved.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the outer cylinder may be moved linearly and the inner cylinder may be rotated. Further, the frictional force of the spring may be applied to the shaft of the rotating body.

<Effects of the Invention> As described above, according to the present invention, the rotation of the rotating body is locked by the frictional force of the spring, so that stepless locking is possible and fine adjustment of winding and withdrawing a long object is possible. In addition to being possible, it is possible to prevent inadvertent unlocking and to prevent noise during operation.

[Brief description of drawings]

1 and 2 are a sectional view and a front view of an embodiment of the present invention, and FIGS. 3 and 4 are a sectional view and a front view of another embodiment. 5 ... Rotator, 6 ... Spring, 7 ... Lock release mechanism, 17
...... Stopper.

Claims (2)

[Claims] 1. A rotary body around which a long object is wound, a spring for locking the rotation of the rotary body by frictional force, and a pair of members screwed together, one of which is linear in the axial direction of the rotary body. A long object winding device comprising a lock releasing mechanism that moves and the other releases the frictional force of the spring by the movement. 2. A rotary body around which a long object is wound, a spring for locking the rotation of the rotary body by frictional force, and a pair of members screwed together, one of which is linear in the axial direction of the rotary body. A lock release mechanism that moves and the other releases the frictional force of the spring by the movement, and a stopper that engages with the one member of the lock release mechanism and stops the movement of the member. Long product winding device.