JPH01225424A - Rotation transmission unit having output shaft rotatable by input shaft - Google Patents

Abstract

PURPOSE:To obtain the subject unit having an output shaft incapable of rotating in either of the normal and reverse directions so far as the rotation thereof is not forced through an input shaft, by attaching a specified rotated body to the end of an output shaft and a specified rotating disk to the end of an input shaft. CONSTITUTION:At a respective part 4 for a locking piece of a rotated body 3 attached to the end of an output shaft 2, a locking piece 5 longer than the minimum distance and shorter than the maximum distance from the bottom 4' thereof to the bore surface of an excision part 10 is equipped so as to be some tiltable. Rotation transmission projecting parts 6 are formed on a rotating disk 9 attached to the end of an input shaft 1 at the positions of the excision part 10 and the rotated body 3 and the rotating disk 9 are butted together in a cylinder 8 (the inner diameter is approximately equal to the outer diameter of the rotated body 3) to fix the cylinder 8 for prevention of rotating thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used as a means for rotationally driving a sheet winding shaft in a covering sheet opening/closing device that winds and opens and closes a covering sheet of a vinyl house, for example, on a sheet winding shaft. The present invention relates to a rotation transmission device in which the output shaft can be rotated only by the input shaft, and which can be widely used in applications where it is difficult for the output shaft to rotate in either the forward or reverse direction due to a load or the like, similar to the sheet winding shaft.

Conventional technology Conventionally, in a vinyl greenhouse, a covering sheet opening/closing device was used to ventilate the greenhouse by wrapping the covering sheet at the hem or trough of the house around a sheet winding shaft and rolling it up from the bottom upwards to prevent the indoor temperature from rising too high. has been developed (for example, a switch device described in Japanese Utility Model Application Publication No. 1983-99966).

What is important for this type of cover sheet opening/closing device is that when the sheet winding shaft is rolled up in the morning or during the day and the cover sheet is rolled up from the bottom to the top to form an opening of the desired size, ventilation is required. The sheet winding shaft is temporarily kept securely in the upper winding position until the evening when it is no longer needed.
In the evening, the opening can be easily closed by rewinding the sheet winding shaft.

However, there is no way to simply and reliably stop the sheet winding shaft that has rolled up the covering sheet in the rolled-up position.Therefore, in the past, for example, the end of the sheet fixing band was rotated in the forward and reverse directions by a winding shaft. On the other hand, the covering sheet winding shaft is interposed between the outside of the frame material of the greenhouse and the inside of the sheet fixing band, and when the covering sheet is rolled up to the desired position with the covering sheet winding shaft,
The sheet fixing band is tightened to hold the coated sheet winding shaft in its rolled-up position and fix it.
(Refer to Japanese Utility Model Application Publication No. 62-99966).

Problems to be Solved by the Invention ■ In the case of a conventional configuration in which the covering sheet is opened and closed and the covering sheet winding shaft is positioned by tightening or loosening the sheet fixing band, it is difficult to rotate the covering sheet winding shaft. It cannot be used unless there are at least two workers, one person operating the sheet fixing band and the other person tightening and loosening the sheet fixing band.Moreover, the entire roof of the greenhouse is used for the sole purpose of stopping the winding position of the covering sheet winding shaft. Tightening and loosening all the sheet fixing bands that hold down the covering sheets would be too exaggerated and the equipment cost would be extremely high. Furthermore, each time the sheet fixing band is tightened or loosened, the roof structure of the greenhouse tends to creak and creak, which can easily cause damage.

■ Conventionally, it is not inconceivable to use a generally known anti-reverse device, brake device, rotation stop device, etc. as a means to temporarily stop the winding position of the coated sheet winding shaft. The reverse rotation prevention device only has the function of stopping rotation in one direction, and it is impossible to hope for the function of stopping bidirectional rotation necessary for the coated sheet winding shaft and controlling and driving the rotation of the coated sheet winding shaft only by the input shaft. Ta. Furthermore, anti-reverse devices, brake devices, rotation stop devices, etc. are complicated, precise, and extremely expensive mechanisms, and their use increases the overall size of the structure. There is some reluctance to use this method in a covering sheet opening/closing device, which should be a simple means of ventilation by simply rolling up the sheet.

■ Therefore, the purpose of this invention is to provide a structure that is inexpensive, lightweight, and small enough to be used in a covering sheet opening/closing device for a greenhouse, and in which the output shaft cannot rotate in both forward and reverse directions unless it is rotated through the input shaft. It is widely used not only for positioning and fixing the winding position of the above-mentioned coated sheet winding shaft, but also for various applications where it is difficult for the output shaft to rotate in either the forward or reverse direction due to loads or external forces applied to the output shaft. It is an object of the present invention to provide a rotation transmission device or a shaft coupling that can be used.

Means for Solving the Problems As a means for solving the problems of the prior art described above, a rotation transmission device according to the present invention in which an output shaft can be rotated only by an input shaft is suitable as shown in FIGS. 1 to 9 of the drawings. As shown in the example, a) the output shaft 2 and the input shaft l are arranged to have the same center line.

The shaft end of the output shaft 2 has at least two lock piece receiving portions 4 which are opened in the radial direction and inclined at an appropriate angle θ with respect to the radius line C, and these lock piece receiving portions are The body 3 to be rotated is integrally provided with a cutout portion 10 formed in such a manner that the short diameter of the surveyor 4 connects two adjacent lock piece receiving portions 4°4.

C) The lock piece receiving portion 4 includes a lock piece receiving portion 4.
A lock piece 5, which is longer than the shortest distance A from the bottom 4' to the inner diameter surface of the cylinder lO described later and shorter than the longest distance a, is installed so as to be able to tilt slightly.

2) On the other hand, a rotary disk 9 is integrally provided at the shaft end of the input shaft l, and has a protruding rotation transmitting convex portion 6 located at the cut-out portion 10 of the rotated body 3, and e) the rotated body 3. The body 3 and the rotary disk 9 are butted together in a high song 8 having an inner diameter approximately equal to the outer diameter of the rotated body 3, and the convex portion 6 for transmitting one rotation is inserted into the cut-out portion IO of the rotated body 3 to assemble.

f) The configuration is such that the rotation of the cylinder 3 is stopped.

In order to use the above-mentioned rotation transmission device for rotating the covering sheet winding shaft of a covering sheet opening/closing device for a greenhouse, the input shaft l is a handle shaft and a manually rotating handle 7 is attached to it, and the output shaft 2 is a handle shaft. It is connected to a covering sheet winding shaft 11 for opening and closing the covering sheet 12 of a plastic greenhouse, and the rotation of one cylinder 8 is stopped by a moving guide 13.

When the output shaft 2 tries to rotate in either the forward or reverse direction due to a load applied thereto, the lock piece receiving portion 4 of the rotated body 3 and the lock piece 5 installed therein In relation to this, the long axis a side of the lock piece receiving portion 4 (see Fig. 2)
This pushes the locking piece 5 toward the tightening side (in the direction of arrows m' and n' in FIG. 2). In this way, the lock piece 5, which is longer than the shortest distance from the bottom 4' of the lock piece receiving part 4 to the inner diameter surface of the cylinder 8, is pushed toward the short diameter side. 4' and the inner diameter surface of the cylinder 8 to form an automatic stopper, and since the rotation of the cylinder 8 is stopped, the rotation of the rotated body 3 and the output shaft 2 is impossible.

On the other hand, when the input shaft l and its rotation transmitting convex portion 5 are rotated in either the forward or reverse direction, the rotation transmitting convex portion 6 moves the lock piece 4 to the loose side (in the direction of arrows m and n in FIG. 2). (See the dotted line diagram in Figure 2), so the lock piece 4 and cylinder 8
The rotation of the one-rotation transmitting convex portion 6 is transmitted to the rotated body 3 via the lock piece 4 and then to the output shaft 2 without causing any abutting relationship.

Therefore, as shown in FIG. 7, when the output shaft 2 is connected to the covering sheet winding shaft 11 and the input shaft 1 is rotated in the normal rotation direction with the handle 7, the covering sheet 12 of the plastic greenhouse is rolled up and an opening for ventilation is opened. can be formed to any size. Then, when the rotation of the handle 7 is stopped, the output shaft 2 cannot be rotated in both forward and reverse directions, so the coated sheet winding shaft 11 is reliably stopped in the rolled-up position.

However, when the handle 7 is rotated in the reverse direction, the output shaft 2
The covering sheet winding shaft 11 connected to the opening is reversed, and the opening is closed by rewinding the covering sheet 12. When the rotation of the handle 7 is stopped at a predetermined position, the output shaft 2 becomes unable to rotate at that position.
is stopped in that position.

Example The illustrated invention will now be described in detail.

First, Fig. 1 shows an exploded view of each component of the rotation transmission device according to the present invention. They are arranged opposite each other in a series to match.

At the shaft end of the output shaft 2, the original basic shape is a disc, and there are a total of four lock piece receiving parts, two on the left and right, arranged symmetrically with the axis of symmetry being the diameter line that bisects the circumference. A rotatable body 3 (see FIG. 2) having openings 4 in the radial direction is provided in one piece.

The lock piece receiving portion 4 has a bottom 4' formed in a semicircular shape at a position where a concentric circle of an appropriate size on the rotated body 3 is divided into four equal parts. The center line d of the lock piece receiving portion 4 is
It is tilted by a slight angle θ with respect to the radius line C of the rotated body 3, and the lock piece receiving portion 4 is slightly flared outwardly due to two oblique sides extending tangentially from the semicircular bottom 4'. It is formed into a fan shape. Therefore, the lengths from the bottoms 4' of the two oblique sides forming the fan-shaped lock piece receiving portion 4 to the outer diameter circle of the rotated body 3 are different. That is, the distance a from the bottom 4' of the side tilted by the angle θ (hereinafter referred to as the major axis side) to the outer diameter circle is the distance a from the bottom 4' of the opposite side (hereinafter referred to as the minor axis side) to the outer diameter circle. It is slightly larger than the distance to the diameter circle.

In the case of this embodiment, the four rod receiving portions 4 are arranged so that the angle θ is symmetrical with respect to the vertical and horizontal diameter lines assumed in FIG. ing.

One lock piece 5 is installed in each lock piece receiving portion 4 so as to be tiltable. This lock piece 5 is connected to the rotated body 3.
(FIG. 3), and its shape when viewed in the direction of FIG. It is formed into a piece having a width parallel to the center line d of the lock piece receiving portion 4 in the tangential direction of the semicircle. The tip end surface of the lock piece 5 is formed into an arcuate surface that is the same as the outer diameter circle of the rotated body 3.

Therefore, this lock piece 5 is tiltable within the range of the difference in width with the lock piece receiving portion 4. The maximum length of this lock piece 5 is a little shorter than the longest distance a from the bottom 4' of the lock piece receiving portion 4 to the inner diameter surface of the cylinder 8 (or the outer diameter circle of the rotated body 3). It has a slightly longer configuration than the same shortest distance.

Therefore, the lock pieces 5 integrated with the rotated body 3 into the cylinder 8 whose inner diameter is approximately the same as the outer diameter of the rotated body 3 are aligned on the center line d of the lock piece receiving portion 4. Positioned and stable, major axis a
As shown by the dotted line, it tilts toward the side and loosens, but it is constructed so that it cannot tilt toward the short diameter side because it is stretched between the bottom 4' of the lock piece receiving portion 4 and the inner surface of the cylinder 8. There is. Each lock piece 5 is always pushed toward the tightening side (shorter diameter side) by a push spring 19 installed between it and the rotated body 3.
It is designed to be stable by being located on the center line of the

In the to-be-rotated body 3, the short diameter of the above-mentioned lock piece receiving part 4 is set between two adjacent lock piece receiving parts 4 and 4 (see Fig. 2) with an appropriate size. It is formed as a resection portion lO cut out along the concentric circles of the center (Fig. 1).

On the other hand, a rotary disk 9 having a disk shape and having approximately the same outer diameter as the inner diameter of the cylinder 8 is integrally provided at the shaft end of the input shaft l. On the outer surface of the rotary disk 9, a rotation transmitting convex portion 6.6 having an arcuate shape approximately the same as the cutout portion 10 between the two adjacent lock piece receiving portions 4 and 4 in the rotated body 3 is provided. is installed protrudingly. The input shaft 1 and the output shaft 2 are arranged facing each other so as to have the same center line.

The rotary disk 9 and the rotated body 3 are brought into abutment within the cylinder 8, and the rotation transmitting convex portion 6 of the rotary disk 9 is assembled into the cutout portion lO of the rotated body 3. There is.

The openings on both sides of the cylinder 8 are for the input shaft l and the bearing part 1 for the output output 2.
Close with bracket 15.15 with 4 and bracket 1
5 and the cylinder 8 are firmly connected with bolts 16 and nuts 17.

Therefore, the cylinder 8 can be fixed to any fixed system 18 as shown in FIG.
For example, if the input shaft l is rotated clockwise (direction of arrow m) in Fig. 2 while it is stopped from rotating,
The rotation transmitting convex portion 6 of the rotary disk 9 rotates forward, and first comes into contact with the lock piece 5 from the short diameter side of the lock piece receiving portion 4 at the positions (II) and (IV) on the rotated body 3, and then Then, the lock piece 5 is tilted forward toward the loose side as shown by the dotted line in FIG. 2, and brought into contact with the long diameter side a. Therefore,
The rotation of the input shaft 1 and the rotary disk 9 is directly transmitted as the rotation of the rotated body 3 and the output shaft 2 in the same direction. At this time, the locking piece 5 at the positions (I) and (III) is tilted toward the loosened side as shown by the dotted line due to the frictional force with the inner surface of the cylinder 8, so that the rotation is not hindered at all.

Conversely, when the input shaft l is rotated in the counterclockwise direction (direction of arrow n) in FIG.
First, the short diameter side of the lock piece receiving portion 4 in the (Iff) position contacts the lock piece 5, and the lock piece 5 is tilted forward toward the loose side as shown by the dotted line in FIG. Bring it into contact. Therefore, the rotation of the input shaft 1 and the rotating disk 9 is as follows.
The rotation is directly transmitted to the rotated body 3 and the output shaft 2 in the same direction. At this time, the lock piece 5 at the (n) (17) position
5 is also tilted toward the slack side as shown by the dotted line due to the frictional force with the inner surface of the cylinder 8, so that the rotation is not hindered.

On the other hand, when the output vehicle 2 tries to rotate in the clockwise direction in FIG. It is about to be pushed in the direction of arrow m' in Figure 2 by the side edges,
It is tilted toward the tightening side from the position shown by the solid line in FIG.

For this reason, the lock piece 5 protrudes like a sliding door between the bottom 4' of the lock piece receiving portion 4 and the inner surface of the cylinder 8, and is automatically locked, so that it cannot rotate.

Alternatively, when the output shaft 2 attempts to rotate in the counterclockwise direction in FIG. ’ direction and tilted toward the tightening side. For this reason, the lock piece 5 is also stretched between the bottom 4' of the lock piece receiving portion 4 and the inner diameter surface of the cylinder 8, making it impossible to rotate.

In short, it is impossible for the output shaft 2 to rotate independently by an external force (load) in both forward and reverse directions.

Therefore, it can be suitably used in applications where it is a problem for the output shaft 2 to rotate freely due to a load, or applications where reliable positioning of the rotational position of the output shaft 2 is required. It can be suitably used for rotating a drive shaft when a single-opening type skylight 20 installed long in the central ridge direction is opened and closed by a switch 21. By the way, this switch 21 converts the rotation of the drive shaft 22 into a linear movement of the push-up rod 21a and lifts it up! ! 20 is configured to open and close. Therefore, the drive shaft 22 is connected to the output shaft 2 of the rotation transmission device A, the chain wheel 23 is attached to the input shaft 1, and the endless chain 24 wound around the chain wheel 23 is operated on the ground to correct the input shaft l. When rotated in the opposite direction, the skylight 20 can be opened and closed through the switch 21. In this case, the cylinder 8 of the rotation transmission device A is attached to the greenhouse frame by the support arm 18 and its rotation is stopped. Therefore, the drive shaft 22 is never rotated in either the forward or reverse direction due to the weight load of the skylight 20 or the load that the skylight 20 receives due to wind pressure, and the opening degree of the skylight 20 is
24, and there is no instability caused by the open skylight 20 flapping around in the wind.

Similarly, this rotation transmission device A can also be suitably used for rotating the drive shaft of the switch 26 of the push-up skylight 25, which opens and closes by vertically moving up and down, as shown in FIG. . This skylight 25 is different from the skylight 20 shown in Fig. 4 in the opening/closing method and the structure of the switch 26, but it is a rotation transmission device! The output shaft 2 of A and the drive shaft 27 are connected, and the skylight 25 can be opened and closed by operating an endless chain 24 wound around the chain wheel 23 of the input shaft l. Moreover, 25 skylights
The opening degree is determined freely and reliably by the operation of the endless chain 24, and once the opening degree is determined, it does not change even when subjected to wind pressure, so there is no change in its operation and effect.

2nd Embodiment FIGS. 6 and 7 show a configuration in which the rotation transmission device A shown in FIGS. 1 to 3 above is used for rotating the sheet winding shaft of a covering sheet opening/closing device for a greenhouse. There is. Therefore, the configuration of the rotation transmission device is the same as the first embodiment, except that 1 yen is 1! The bracket 15' that closes the openings on both sides of J8 is formed in the shape of a battledore with the upper part folded back into a U-shape (Fig. 7).
(Nara) 17. A rotatable guide roller 30 is installed in the folded portion of the bracket 15', and is formed in a guide hole 31 through which the moving guide 13 (FIG. 8) passes. The outer surface of the bracket 15", including the lower grip part 32, is covered with an exterior casing 33 made of synthetic resin. The output shaft l serves as a handle shaft, and a manual handle 7 is attached to it. One end of a covering sheet winding shaft 11 is connected to the output shaft 2 so as to rotate together with a bin 34 .

Therefore, when this rotation transmission device B is used for rotating the covering sheet winding shaft 11 that opens and closes the hem of a greenhouse as shown in FIG. 13 through the guide hole 31 and the cylinder 8
It is used in a state where the rotation is stopped. That is, by grasping the grip 32 with one hand and turning the handle 7 with the other hand, the covering sheet winding shaft 11 can be rotated in either forward or reverse direction, and the covering sheet wound around the covering sheet winding shaft 11 can be rotated in either direction. The sheet 12 can be rolled up to form a large opening for ventilation, or the covering sheet 12 can be rolled back to close the opening.

Moreover, when the covering sheet winding shaft 11 is positioned at a desired winding height, when the rotation of the handle 7 is stopped, the output shaft 2 and the covering sheet winding shaft 11 can be reliably stopped at the winding position. Therefore, there is no need for a reverse rotation prevention device or a rotation stop device, which is very convenient. This rotation transmission device B moves in the vertical direction along the movement guide 13 as the covering sheet winding shaft 11 moves.

In addition, as illustrated in FIG. 8, in the case of a covering sheet opening/closing device for opening and closing the covering sheet 12 in the valley of a multi-unit greenhouse, the rotation transmission device is used as a means for rotating the covering sheet winding shaft 11. B (or A) can be used. In this case, a rotation transmission device! The grip 32 in 1B is inserted and attached to the upper end of a slide pipe 35, and the slide pipe 35 is telescopically inserted into a support 36 which is erected on the ground so as to be able to tilt slightly. On the other hand, a chain wheel 23 is attached to the input shaft 1, and an endless chain 24 on which eight turns of the chain wheel 23 are hung is operated on the ground to rotate the input shaft 1.

Other Usage Modes (Part 1) The rotation transmission device tA or B described above has a configuration in which the input shaft 1 is rotationally driven by a mortar or the like, and can be used for various purposes.

(Part 2) A gear, belt wheel, sprocket wheel, etc. for rotation transmission or speed change is attached to the input shaft 1 or output shaft 2 of the rotation transmission device A or B, or to both shafts 1 and 2. acceleration/deceleration.

Alternatively, it can be used for various purposes with a configuration in which rotation is transmitted to a shaft separated by a distance. It is also possible to implement a mode of use in which a flexible shaft is connected to the output shaft 2 to transmit rotation.

Third Embodiment The rotation transmission device shown in FIG.
Two lock piece receiving portions 4.4 having a substantially C-shape with a bottom 4' of approximately 270° C. are provided in a symmetrical arrangement with the vertical diameter line assumed in FIG. 2 as the axis of symmetry. It is being In each lock piece receiving portion 4, there is a bottom 4' and a substantially concave portion.
A locking piece 5 having a circular base end with a diameter and an arc angle of approximately 270° C. is installed so as to be able to freely tilt slightly. Moreover, the tip end surface of each lock piece 5 is rounded into a semicircular shape. In addition, a rotation transmitting convex portion 6 protruding from the rotating disk of the input shaft is inserted into the cutout portion where the short diameter sides of the two lock piece receiving portions 4, 4 are connected. The disk and the rotated body 3 are assembled in a cylinder 8 having approximately the same diameter as the outer diameter of the rotated body 2.

The shape and number of the lock piece receiving portion 4 and the lock pieces 5 in this embodiment are different from those in FIGS. 1 to 3 above. However, when the rotation transmitting convex portion 6 of the input shaft rotates, for example, in the clockwise direction (arrow m direction) in FIG. , the rotation of the input shaft is transmitted to the output shaft 2 by contacting the rotated body 3 as it is. At this time, the lock piece 5 at the g (n) position is tilted toward the loosened side (in the direction of the arrow n) by the frictional force with the cylinder 8, so that rotation of the rotated body 3 and the output shaft 2 is not hindered.

Conversely, the input shaft is rotated counterclockwise (direction of arrow n) in Figure 9.
When rotated, the rotation transmitting protrusion 6 comes into contact with the lock piece 5 at the (■) position on the rotated body 3 and tilts it forward toward the loosened side, and the rotation of the input shaft continues as it is between the rotated body 3 and the output. It is transmitted as rotation of axis 2. At this time, the lock piece 5 at the (I) position is also tilted toward the loosened side (in the direction of arrow m) by the frictional force with the inner surface of the cylinder 8, and does not interfere with the rotation.

On the other hand, when the output shaft 2 attempts to rotate in the clockwise direction (arrow m' direction) in FIG. The sides touch and push toward the tightening side. Therefore, the lock piece 5 is stuck like a wedge between the bottom 4' of the lock piece receiving portion 4 and the inner surface of the cylinder 8, and is automatically locked and cannot rotate once. Similarly, when the output shaft 2 rotates in the counterclockwise direction (direction of arrow n') in FIG.
The lock piece 5 in the position is pushed toward the tightened side, and is still unable to rotate. In short, it is impossible for the output shaft 2 to be rotated by an external force (load) in both forward and reverse directions.

Therefore, the rotation transmission device is suitable for applications where it is a problem for the output shaft 2 to rotate freely due to external force or load, or applications where reliable positioning of the rotational position of the output shaft 2 is required, just as in the above embodiment. It can be used in exactly the same way as the above embodiment.

Other embodiments (part 1) If the structure is such that a lock piece receiving portion and one lock piece are installed on the rotated body of the output shaft, a reversal prevention device that cannot rotate the output shaft 2 only in one direction is used. Become.

(Part 2) The rotation transmitting convex portion on the rotating disk of the input shaft is not limited to the configuration in which it is provided in an arc shape having approximately the same diameter as the cutout portion of the rotated body as in the above embodiment.

The same effect can be obtained even if projections having sufficient strength necessary for rotation transmission are provided at both ends of the same arc.

The effects of the present invention have been described in detail in conjunction with the embodiments, and the rotation transmission device according to the present invention in which the output shaft can be rotated only by the input shaft cannot rotate the output shaft 2 independently. This is possible because the output shaft 2 will never be rotated by a load or external force.

For example, it can be widely used for rotating the covering sheet winding shaft 11 in a covering sheet opening/closing device for a vinyl greenhouse, or as a means for inputting opening/closing input for skylights or side windows.

In particular, when used for rotating the covering sheet winding shaft 11, the covering sheet winding shaft 11 can be reliably stopped at a desired winding position by arbitrarily stopping the rotation of the input shaft l. You can also freely adjust the opening degree of the windows. However, since there is no need to use a reverse rotation prevention device, a brake device, or a rotation stop device, it can be used easily and at low cost.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the components of a rotation transmission device according to the present invention, and FIGS. 2 and 3 are views from arrows 2-2 and 3-3 showing the assembled state of the rotation transmission device. cross-sectional view, 4th
5 and 5 are perspective views of the roof of a greenhouse showing an example of the use of the rotation transmission device, and FIGS. 6 and 7 are front views and FIGS. FIG. 8 is a perspective view of a greenhouse showing an example of the use of the previous rotation transmission device, and FIG. 9 is a sectional view showing the rotation transmission device of the third embodiment. l...Input shaft 2...Output shaft 4...
・Lock piece receiving part 4'...Bottom 5...Lock piece 1O...Removed part 6...Rotation transmission convex part 9...Rotating disk 8...Cylinder 7...
Handle 12...Covering Sheet No. 2iiA Fig. 3 2 Fig. 9 Procedural Official Document (Spontaneous) 1. Indication of the Case 1988 Patent Application No. 50451 26 Name of the Invention The output shaft can be rotated by the input shaft. Relationship between the rotational transmission device 3 and the amended case Patent applicant address: 3-8-8 Kayabacho, Nihonbashi, Chuo-ku, Tokyo Name: Higashito
Kogyo Co., Ltd. 4, agent address: Sanpo Building 3, 3-11-2 Kyobashi, Chuo-ku, Tokyo
Floor Shirage Patent Office 5, Column 6 of the title of the invention in the specification to be amended, Contents of the amendment

Claims (1)

[Scope of Claims] [1] A) The output shaft and the input shaft are arranged so that their respective center lines coincide, and B) The shaft end of the output shaft has a radial direction and a radial line. It has at least two lock piece accommodating parts that are opened at an angle with respect to each other, and a cutout part is formed in a shape in which the short diameter sides of these lock piece accommodating parts connect two adjacent lock piece accommodating parts. c) The lock piece receiving part has a rotatable body that is longer than the shortest distance and shorter than the longest distance from the bottom of the lock piece receiving part to the inner diameter surface of the cylinder described below. A short locking piece is installed to allow slight tilting; d) The shaft end of the input shaft has a rotating disk with a protrusion for transmitting rotation located at the cutout of the rotated body. (e) The rotated body and the rotating disk are butted against each other in a cylinder with an inner diameter approximately equal to the outer diameter of the rotated body, and the rotation transmitting convex portion is connected to the cutout of the rotated body. A rotation transmission device capable of rotating an output shaft only by an input shaft, characterized in that: (f) rotation of the cylinder is stopped; and (f) rotation of the cylinder is stopped. [2] The input shaft serves as a handle shaft and a handle for manual rotation is attached to it, and the output shaft is connected to the sheet winding shaft that opens and closes the covering sheet of the greenhouse, and the rotation of the cylinder is stopped by a movement guide. A rotation transmission device characterized in that an output shaft can be rotated only by an input shaft.