JPH0215472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a full-movement dividing winding device used in a device using a full-movement drive source.

BACKGROUND OF THE INVENTION A split winding device is already well known, which winds a whole by pulling a drawstring multiple times to rotate a pulley back and forth.

By the way, when the drawstring is pulled to wind up the full length, the pulley is rotated from the starting position to the terminal position, then returns to the starting position, and then is rotated toward the terminal position by the pulling force of the drawstring again. be rotated again. After the complete hoisting is completed, it is necessary to completely disconnect the driving force transmission system between the pulley and the full hoisting shaft. When hoisting the winder, the pulley and the winding shaft must be reliably connected. The split winding device proposed in US Pat. No. 3,610,369 has to a certain extent achieved its intended purpose.

Problems to be Solved by the Invention In the device proposed in the above specification,
Since the load on the pulley when returning to the starting position and hoisting is large, there is a problem in that a large force is required to hoist the pulley all the way. Further, there are problems in that a dedicated case is required to receive the load of the pulley, and the shapes and configurations of the parts are complicated.

Means for Solving the Problems The Zenmai divisional hoisting device of the present invention solves the above-mentioned problems, and has a pulley body rotated on the Zenmai hoisting shaft or a shaft rotationally coupled to the Zenmai hoisting shaft. The two are fitted together freely and connected by a spring clutch, one end of the coil spring of the clutch is locked to a pulley body, and the pulley body is provided with a pulley return spring that biases it in the opposite direction to the full winding direction. a release means for controlling the rotation of the pulley body between a starting position and a final position, and engaging the other end of the coil spring to expand the spring when the pulley body is at the starting position; It has been established.

Function When the pulley body is rotated in the direction of full winding, the coil spring of the spring clutch is wound tightly, the pulley body and the full winding shaft are integrated, and the shaft is rotated, and the full winding is completed. It will be done. At this time, the pulley return spring is energized. When the pulley body has rotated to the final position and the restraining force on the pulley body is cut off, the pulley body returns to the starting position by the force of the pulley return spring. When the pulley body returns to the starting position, the coil spring engages with the release means and is expanded to release the clutch action. By rotating the pulley body multiple times between the starting position and the final position, the entire winding is gradually wound up.

Embodiments Hereinafter, the present invention will be described in detail based on illustrated embodiments in which the full-length split winding device of the present invention is applied to a music box.

In FIGS. 1 to 3, reference numeral 1 indicates a known music box movement. A full-length storage box (not shown) is fixed to the frame 2 of the movement 1, and an upper shaft 3 of this full-length storage box protrudes. Furthermore, a window hole 6 is formed in the frame 2, into which the drum 4 and a gear 5 integrated therewith enter. A shaft 7 is attached to the threaded portion 3a of the Zenmai winding shaft 3.
are tightly screwed together. The shaft 7 consists of a large-diameter driven shaft portion 7a and a small-diameter support shaft portion 7b.
A female thread 7c is formed at the end of the support shaft portion 7b. A disk-shaped fixing member 8 is brought into contact with the lower surface of the frame 2 centered on the shaft 7.
As shown in FIG. 4, the fixing member 8 includes a hole 8a surrounding the shaft 7, an engaging portion 8b formed on the periphery of one surface, and engaging with the window hole 6 of the frame.
A release protrusion 8c is formed on the periphery of the hole 8a and serves as a release means for engaging an end of a coil spring to be described later to expand the spring. It consists of a regulating protrusion 8d as a rotation range regulating means for regulating the rotation range of the pulley body, and an annular protrusion 8f that is concentric with the hole 8a and has a notch 8e that locks one end of a pulley return spring, which will be described later. There is.

A coil spring 9 is attached to the driven shaft portion 7a of the shaft 7.
The free end of is tightly wrapped. The end 9a of this spring 9 is connected to the release protrusion 8 of the fixing member 8.
It is bent in the direction and length so that it can be engaged with c.

A pulley body 10 is rotatably fitted into the support shaft portion 7b of the shaft 7. The pulley body 10 has flanges 10a, 10a and one end 11a of a drawstring 11 for full winding being fixed thereto, and is fitted into a circumferential surface portion 10b around which the pulley string 11 is wound and the support shaft portion 7b. a cylindrical portion 10e that surrounds the drive shaft portion 10c and has a notch 10d for locking one end 9b of the coil spring 9; Cylindrical part 1
A cylindrical portion 10g that surrounds the cylindrical portion 10e and has a notch 10f for locking the other end 12a of the pulley return spring 12 and cooperates with the cylindrical portion 10e to constitute a pulley return spring storage portion; The engagement protrusion 10h is formed to face inward and engages with and disengages from the regulation protrusion 8d of the fixing member 8. The other end 12b of the pulley return spring 12 is locked in a notch 8e of the fixing member 8. In addition, in FIG. 3, the relative positions of the notches that respectively lock the ends of each spring are shown shifted from those in FIGS. 1 and 2 for convenience of illustration. The base end portion of the coil spring 9 is tightly wound around the circumferential surface of the drive shaft portion 10c.

The coil spring 9 tightens when the pulley body 10 is rotated in the direction of the arrow.
0c and the driven shaft portion 7a. That is, the coil spring 9, the driven shaft portion 7a, and the drive shaft portion 10c constitute a spring clutch.

A screw 15 is screwed into the female thread 7c of the shaft 7 via a washer 13 and a spring washer 14. By tightening the screws 15, the fixing member 8 and the pulley body 10 are supported by the frame 2 in an overlapping state. The fixing member 8 is supported non-rotatably by the engaging portion 8b engaging with the window hole 6.

The pulley body 10 is given a rotational habit by the elasticity of the pulley return spring 12 in the direction of rotating the pulley body back to the starting position. At this starting position, the pulley body 10 has the engaging protrusion 10h abutting against the regulating protrusion 8d, as shown in FIG. Further, when the pulley body 10 is placed at the starting position, the other end 9a of the coil spring 9 is engaged with the release protrusion 8c, as shown in FIG.

The operation of the embodiment configured as above will be explained.

First, to explain the situation when the pulley body 10 is located at the starting position, the pulley body 10
The engaging protrusion 10h is engaged with the regulating protrusion 8d by the elasticity of the pulley return spring 12 (see FIG. 2). At this time, the drawstring 11 is wound around the peripheral surface portion 10b of the pulley body. On the other hand, the coil spring 9 constituting the spring clutch has its other end 9a connected to the release protrusion 8c of the fixing member 8.
(see FIG. 6), and the portion wound around the driven shaft portion 7a is expanded.

Now, in FIG. 2, when the drawstring 11 is pulled in the direction indicated by the arrow in the direction of winding up the entire length, the pulley body 10 is rotated in the direction indicated by the arrow against the elasticity of the pulley return spring 12. When the pulley body 10 rotates, one end 9b of the coil spring 9 rotates in conjunction with this rotation to tighten the spring. The coil spring 9 that is wound and tightened is the drive shaft portion 10c.
When tightly wrapped around the driven shaft portion 7a, this shaft portion 7a
rotates fully in the upward direction together with the pulley body 10. Since the rotating driven shaft portion 7a is substantially integrated with the full winding shaft 3, it winds the full winding (not shown). The pulley body 10 rotated by a drawstring 11 biases a pulley return spring 12 locked between the pulley body 10 and the fixing member 8.

Pulley body 10 that can be rotated while winding up the entire movement
However, as shown in FIG. 5, when the engaging protrusion 10h is rotated to the end position where it abuts against the regulating protrusion 8d, the pulley body is prevented from rotating fully upward. When the tensile force on the drawstring 11 is released at the terminal position, the pulley body 10 is rotated in the opposite direction to the full winding upward direction while winding the drawstring 11 around its peripheral surface by the force of the pulley return spring 12. be forced back into action. At this time, the pulley body 10 rotates in a direction to unwind the coil spring 9.
The coil spring wound around the driven shaft portion 7a is loosened.

As shown in FIG. 6, the engaging protrusion 10h
The other end 9a of the coil spring 9 engages with the release protrusion 8c at a position immediately before the pulley body 10 returns to the starting position where the pulley body 10 abuts against the regulating protrusion 8d. Due to this engagement between the two, the coil spring 9 is forcibly released from being wound around the driven shaft portion 7a. The pulley body 10 further rotates from the state shown in FIG.
It returns to the starting position (see Figure 2) where it collides with and stops.

As mentioned above, pull the pulley body 1 by pulling the drawstring 11.
0, and when the pulley body has rotated to the terminal position, the pulling force on the drawstring 11 is released and the pulley body 10 returns to the starting position. It will be done. After all winding is completed, pulley body 10
is placed at the starting position, and a drawstring 11 is wound around its peripheral surface 10b.

On the other hand, at this time, the other end 9a of the coil spring 9 is engaged with the release protrusion 8c (see FIG. 6).
Therefore, the driven shaft portion 7a and the drive shaft portion 10c
The winding around the body is loosened. Therefore, the driving force transmission system between the full-lift hoisting shaft 3, which rotates as the full-lift is released, and the pulley body 10 is cut off, and the pulley body 10 does not rotate. .

Next, other embodiments of the present invention will be described with reference to FIGS. 7 to 10. This embodiment differs from the previous embodiment in the structure of the pulley body. Therefore,
The same members as in the previous embodiment are given the same reference numerals, and their explanations will be omitted.

The pulley body 100 consists of a main body 101 around which a drawstring 11 is wound, and a spring fixing plate 103 that is loosely fitted into a recess 102 of the main body 101. The inner wall of the recess of the main body 101 is formed with an inward engaging protrusion 110h that engages and disengages with the regulating protrusion 8d of the fixing member 8. A coil spring 1 with a relatively strong spring force for a torque limiter is attached to the outer periphery of the recess 102.
A spring stop 102a that locks one end of the spring 04 is formed. Hole 10 formed at the bottom of recess 102
A loosening lever 1 extending in the axial direction is located near the side of 2b.
02c is formed protrudingly.

The spring fixing plate 103 includes a disk portion 103a that loosely fits into the recess 102, a spring storage portion 103b that stores the coil spring 104 using the inner circumferential wall of the recess 102 and the spring stopper 102a, and a rotation support shaft portion 7b of the shaft 7. A drive shaft portion 110c that is freely inserted and inserted, and one end 9 of a coil spring 9 that partially surrounds the drive shaft portion 110c.
Partial cylindrical part 1 having a notch 110d that locks b
10e, a cylindrical portion 110g surrounding this and having a notch 110f for locking one end 12a of the pulley return spring 12, and a missing portion of the partial cylindrical portion 110e formed in the disc portion 103a. , a circular arc hole 103 through which the loosening lever 102c passes.
It consists of c.

As shown in FIG. 9, the fixing member 8 has an engaging portion 8
b is engaged with the window hole 6 of the frame 2 (see Fig. 1), so that it does not rotate between the frame 2 and the spring 12 in the pulley body 100, which is secured to the shaft 7 with a screw 15. Retained. A coil spring 9 is tightly wound around the drive shaft portion 110c, which is rotatably fitted into the support shaft portion 7b, and the driven shaft portion 7a. Due to its elasticity, the coil spring 104 biases the main body 101 and the spring fixing plate 103 in directions that rotate them in opposite directions. Due to this rotational behavior, the loosening lever 102c is
03c (see FIG. 8). Due to the elasticity of the pulley return spring 12,
As shown in FIG. 8, the pulley body 100 is placed at a starting position in which the engaging protrusion 110h is engaged with the regulating protrusion 8d. When the pulley body 100 is placed at the starting position, the other end 9a of the coil spring 9 is engaged with the release protrusion 8c of the fixing member 8, as shown in FIG. There is. Further, at this time, the loosening lever 102c is placed at a position separated from the other end 9a of the coil spring 9, as shown in FIG.

The operation of the embodiment configured as above will be explained.

At the starting position shown in FIG. 8, when the drawstring 11 is pulled in the direction of the arrow, the main body 101 of the pulley body 100 is rotated in the direction of the arrow. The rotation of the main body 101 is transmitted to the spring fixing plate 103 via the spring stop 102a, the coil spring 104, and the spring storage part 103b, causing it to rotate. By the rotation of the spring fixing plate, the coil spring 9, whose one end 9b is locked to the drive shaft portion 110c, is wound tightly, tightly wound around the driven shaft portion 7a, and rotated to rotate the entire winding shaft 3. Rotate and wind up the whole dance (not shown). When the pulley body 100 rotates a little and the coil spring 9 is tightened, the other end 9a is
As shown by the broken line in FIG. 10, it separates from the release protrusion 8c of the fixing member 8 and gradually moves away from the fixed release protrusion 8c.

When the pulley body 100 rotates due to the tension of the drawstring 11 and winds up the whole body, the pulley return spring 12 is charged. Further, at this time, the coil spring 104 serving as a torque limiter biases the main body 101 and the spring fixing plate 103 without being compressed.
Therefore, the coil spring 104 is given a greater elasticity than the full winding force (not shown).

When the pulley body 100 is rotated approximately one rotation from the starting position and the engaging protrusion 110h is engaged with the regulating protrusion 8d, the restraining force on the drawstring 11 is cut off at the terminal position where rotation in the winding direction is prevented. This pulley body 100
is rotated backward toward the starting position by the stored force of the pulley return spring 12. Engagement protrusion 1 of main body 101
10h returns to the starting position where it engages with the regulating protrusion 8d, the other end 9 of the coil spring 9
a engages with the release protrusion 8c (see Fig. 10),
The spring 9 is expanded.

Pull the pulley body 100 placed at the starting position with the string 1
1 to reciprocate a plurality of times to wind up the entire winding, as in the previous embodiment.

By the way, if the drawstring is further pulled after the entire winding is completed, there is a risk that an overload will be applied to the winding system and the winding system will be damaged. In the embodiment shown in FIG. 8, a torque limiter is provided to eliminate the problem of overload.

That is, when the drawstring 11 is further pulled after the full winding is completed, the main body 101 is rotated in the full winding upward direction against the elasticity of the coil spring 104. At this time, the spring fixing plate 103 cannot rotate because the entire winding has been completed.
is placed in a stopped state. On the other hand, at this time, the other end 9a of the coil spring 9 is connected to the loosening lever 102.
When the main body 101 is rotated with respect to the spring fixing plate 103 which is in a stopped state, the loosening lever 102c
rotates counterclockwise to engage with and push the other end 9a of the coil spring 9. Other end 9a
The coil spring 9 that has been pushed moves the driven shaft portion 7
This means that the winding around the drive shaft portion a and the drive shaft portion 110c has been loosened. In other words, the clutch was severed. Therefore, the pulley body 100 rotated by the drawstring 11 is rotated independently of the full winding upper shaft 3 while sliding between the coil spring 9 and the driven shaft portion 7a, and overload is eliminated. Ru.

Now, in the embodiment described above, the pulley body is rotated by a pull string to wind up the Zenmai, but instead of using a drawstring, the pulley body is grasped directly with the hand and the Zenmai is wound up. It's okay. In this case, the winding operation can be easily performed by forming a part on the pulley body where the fingers can be hung.

In addition, according to the illustrated embodiment in which the pulley body is arranged coaxially with the full hoisting shaft, and the spring clutch and pulley return spring are also arranged coaxially, the device can be made more compact, and the split hoisting device of,
Since the conventional winding key can be simply replaced with a full-length winding device using a winding key, there are no restrictions on the use of this device and the range of application is expanded.

In the illustrated embodiment, the pulley body and various springs are arranged coaxially with the Zenmai hoisting shaft, but in the present invention, the pulley body is arranged on a shaft that is rotationally coupled to the Zenmai hoisting shaft via the gear train. It may be rotatably inserted. Furthermore, in the illustrated embodiment, the fixing member 8 is attached to the frame 2 in a non-rotatable manner, but it is of course possible to use a mounting plate of a device that is driven at full speed, such as a music box movement. .

Effects of the invention A fully hoisting shaft or a shaft rotatably coupled to the shaft and a pulley body are coupled via a spring clutch,
According to the present invention, in which the rotation range of the pulley body is restricted by the fixed member and the spring clutch is disconnected at the starting position of the pulley body, the load when the pulley body is fully hoisted and returned is released to the fixed member. Therefore, a special member for eliminating the load is not required, and the configuration can be simplified. In addition, when the pulley body is placed at the starting position, the coil spring constituting the spring clutch is expanded, so the rotation of the full-winding upper shaft when fully open is not transmitted to the pulley body. The release force of the entire movement is stabilized and the performance of the hoisting mechanism can be maintained.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing an embodiment of the full-length split winding device of the present invention, Fig. 2 is an enlarged plan view showing the starting position of the same, Fig. 3 is an enlarged sectional view of the same, and Fig. 4
The figure is a perspective view showing an example of the fixing member, FIG. 5 is an operational view of FIG.
The figure is a plan view of the main part showing the state immediately before returning to the starting position.
Fig. 7 is an exploded perspective view showing a different embodiment of the present invention, Fig. 8 is an enlarged plan view of the same, Fig. 9 is a sectional view of the same,
FIG. 10 is an enlarged plan view of the same main part. 3... Zenbu winding upper axis, 7a, 9, 10c, 110
c...Spring clutch, 9...Coil spring, 10,100...Pulley body, 8...Fixing member, 12...Pulley return spring, 8d, 10h, 1
10h... Rotation range regulating means, 8c... Release means.

Claims (1)

[Scope of Claims] 1. A pulley body that is rotatably fitted to a full-length winding shaft or a shaft that is rotationally coupled to the above-mentioned shaft; It includes a coil spring wound around the hoisting shaft or a shaft rotationally coupled to the hoisting shaft, and transmits the rotation of the pulley body to the hoisting shaft or a shaft rotationally coupled to the hoisting shaft. The spring clutch is stretched between a fixedly disposed fixing member and the pulley body, and urges the pulley body in a direction opposite to the full winding upward direction to move the pulley body to the starting position. a pulley return spring for returning the pulley; and a rotation range regulating means provided on the fixed member for regulating the rotation range of the pulley body between a terminal position and a starting position that prevent full winding upward rotation. , a release disposed on the rotation locus of the other end of the coil spring of the spring clutch, which engages the other end of the spring in a direction to expand the coil spring when the pulley body returns to the starting position; A fully divided winding device comprising means.