JP2007092973A - Rotation transmission device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotation transmission device capable of rotating a manually operated handle for rotating an input shaft in only one direction for improving rotation operation always and allowing an output shaft to rotate in both of forward and reverse directions freely. <P>SOLUTION: A second input shaft 5 is provided in a side face part from which the input shaft 3 protrudes of the rotation transmission device 1. A gear 7 provided in a basic part of the second input shaft 5 and a gear 6 provided on the input shaft 3 mesh mutually to connect both shafts 3, 5. The common manually operated handle 10 is attached to the input shaft 3 and the second input shaft 5 and is freely removed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, the output shaft can freely rotate in both forward and reverse directions by rotating the input shaft. However, the output shaft cannot rotate in either the forward or reverse direction even if it receives a large rotational force. It belongs to the technical field of rotation transmission devices that can only be rotated by the input shaft. In addition, the manual handle that rotates the input shaft always rotates only in one direction that is good at rotating operation, and the output shaft is bi-directional. The present invention relates to a rotation transmission device that can freely rotate.

  Conventionally, a rotation transmission device that can rotate an output shaft only by an input shaft has been developed and proposed by the present applicant for the purpose of rotating a seat winding shaft that opens and closes a ventilation opening of a greenhouse, for example. Various known in advance. For example, in the rotation transmission device disclosed in Patent Document 1, the output shaft and the input shaft are abutted against each other so that the center line coincides with a snap ring-shaped friction plate interposed therebetween. Brake protrusions are provided. The friction plate has a recess and a lock cam surface on the inner periphery of the friction plate. The transmission pin and the brake protrusion are arranged on the inner peripheral side of the friction plate, and are transmitted to the rotating body of the input shaft. A driving hole into which a pin and a braking protrusion are inserted is provided, and a braking release convex portion that presses the concave portion of the friction plate is provided on the inner end surface of the rotating body.

  The rotation transmission device disclosed in Patent Document 2 is provided with a lock pin that prevents rotation of the output shaft and a non-rotating convex portion that transmits rotation of the input shaft to the output shaft, and has a rotation lock function and rotation. It is the structure which made the structure of the transmission mechanism independent, respectively.

  In the rotation transmission devices disclosed in Patent Literature 3 and Patent Literature 4, a coil spring-shaped braking member is installed on the outer periphery of the braking drum, and the braking force is applied when the output shaft rotates with an excessive load rotational force applied to the braking member. The brake drum is inevitably made non-rotatable, and the brake drum inevitably works as a member for restraining the brake member from the inside to exhibit the braking action with high efficiency, thereby preventing the problem of buckling or yielding. On the contrary, when the input shaft is rotated, the frictional force with the brake drum is reduced as much as possible by loosening the torsion of the brake member, thereby reducing the power loss as much as possible.

Japanese Patent No. 2847618 JP 2000-266152 A JP 2000-346167 A JP 2002-174320 A

In each of the rotation transmission devices described in Patent Documents 1 to 4, the input shaft is rotated by a manual handle to rotate the output shaft in the forward and reverse directions, and the output shaft is also reliably secured at the position where the rotation of the input shaft is stopped. Therefore, the rotation stops, so that it can be operated according to the intention of the operator, has excellent responsiveness, and is highly complete both structurally and practically.
However, all of the rotation transmission devices described in Patent Documents 1 to 4 change the rotation direction of the manual handle in the forward and reverse directions to change the output shaft in the forward direction (clockwise) or the reverse direction (counterclockwise). ).
However, if we carefully examine the movement of a manual handle by a human being, it is usually good at using it in the normal direction (clockwise), and it is easy to use, compared to the rotation in the reverse direction (counterclockwise). Therefore, the user is equally aware of the fact that the work efficiency is high and the work is easy.

  Accordingly, an object of the present invention is to perform the rotation operation of the input shaft by the manual handle only in one direction that is always good or convenient (for example, the forward rotation direction), and yet the output shaft can be freely moved in both forward and reverse directions. Therefore, it is an object of the present invention to provide a rotation transmission device that can be rotated easily, and is thus easy to use and can improve work efficiency.

  The second object of the present invention is that the manual handle can be rotated and used only in the normal forward direction, and the output shaft is accelerated or decelerated depending on the application and function, or depending on the size of the load. An object of the present invention is to provide a rotation transmission device having a configuration capable of obtaining a boosting effect.

As a means for solving the above-described problems of the prior art, the rotation transmission device according to the invention described in claim 1 includes:
By rotating the input shaft 3, the output shaft 4 can freely rotate in both forward and reverse directions, but the output transmission shaft 1 is configured to be non-rotatable in both forward and reverse directions even if it receives rotational force. In
A second input shaft 5 protruding parallel to the input shaft 3 is installed on a side surface portion of the rotation transmission device 1 from which the input shaft 3 protrudes.
Both shafts 3 and 5 are connected by meshing a gear 7 provided at the base of the second input shaft 5 with a gear 6 provided on the input shaft 3;
A common manual handle 10 is attached to the input shaft 3 and the second input shaft 5 so as to be detachable.

According to a second aspect of the present invention, in the rotation transmission device according to the first aspect,
Torque receiving portions 3 ′ and 5 ′ having a common configuration are formed on the outer ends of the input shaft 3 and the second input shaft 5,
The shaft coupling portion 11 of the manual handle 10 is formed with a torque transmission portion 11 ′ that is connected to the torque receiving portions 3 ′ and 5 ′ of the input shaft 3 and the second input shaft 5 and transmits a rotational force.
When the shaft coupling portion 11 of the manual handle 10 is attached to the outer end portion of the input shaft 3 or the second input shaft 5, the torque receiving portion 3 ′ or 5 ′ and the torque transmitting portion 11 ′ can transmit the rotational force. It is set as the structure connected.

The invention according to claim 3 is the rotation transmission device according to claim 2,
The torque receiving portions 3 ′ and 5 ′ and the torque transmitting portion 11 ′ are configured to be connectable with one of them as a key and the other as a key groove.

The invention according to claim 4 is the rotation transmission device according to claim 2,
One of the torque receiving portions 3 ′ and 5 ′ and the torque transmitting portion 11 ′ is configured to be connectable as either a square axis or a hexagonal shaft and the other as a square hole or a hexagonal hole.

Invention of Claim 5 is the rotation transmission apparatus as described in any one of Claims 1-4,
The number of teeth of the gear 7 of the input shaft 5 and the gear 6 of the second input shaft 3 are configured by an inverse ratio of the speed at which the output shaft 4 is desired to rotate through the second input shaft 5.

  The rotation transmission device 1 according to the first to fourth aspects of the present invention has the second input shaft 5 protruding in parallel with the input shaft 3 and the shafts 3 and 5 are connected by gears 6 and 7 that mesh with each other. When the common manual handle 10 rotates the input shaft 3 in the normal forward direction (for example, clockwise), the output shaft 4 rotates in the normal direction as well as the second input shaft 5 is also in the normal forward direction (clockwise). ), The output shaft 4 can be rotated in the reverse direction (counterclockwise) by the principle of gear transmission. In other words, the manual handle 10 can always rotate only in the forward direction that is good at it, and the output shaft 4 can be rotated in the forward or reverse direction. Therefore, when this rotation transmission device 1 is used, for example, as a means for winding or unwinding the sheet winding shaft 12 that opens and closes the ventilation opening of the greenhouse, the forward rotation and the reverse rotation (opening and closing of the ventilation opening) of the sheet winding shaft 12 are input. By properly using the shaft 3 and the second input shaft 5, the manual handle 10 can always be rotated and operated only in one direction (forward rotation direction), so that it can be freely opened and closed, so that it is easy to use and the work efficiency can be improved.

  In the rotation transmission device 1 according to the fifth aspect of the present invention, the number of teeth of the gear 7 of the second input shaft 5 and the number of teeth of the gear 6 of the input shaft 3 are set to an inverse ratio of the speed at which the output shaft 4 is to be rotated. For example, when the rotation of the output shaft 4 is large, such as when the vinyl sheet winding shaft 12 is wound up, the output shaft 4 is configured with a gear ratio that decelerates the rotation of the second input shaft 5. A boosting effect can be obtained in the rotation of the handwheel, and the manual handle 10 can be rotated without difficulty even for a woman or an elderly person. On the other hand, when the seat winding shaft 12 is unrolled, the rotation of the output shaft 4 with a small rotational load is performed by rotating the input shaft 3 and the output shaft 4 at the same rotational speed as the manual handle 10 to perform the target work faster. It can be convenient.

  A second input shaft 5 that protrudes in parallel with the input shaft 3 is installed on the side surface of the rotation transmission device 1 from which the input shaft 3 protrudes. A gear 7 provided at the base of the second input shaft 5 and a gear 6 provided on the input shaft 3 are engaged with each other and connected. A manual handle 10 is attached to the input shaft 3 and the second input shaft 5 so as to be freely removable.

Hereinafter, the present invention will be described based on illustrated embodiments.
In FIG. 1, the output shaft 4 can be freely rotated in both forward and reverse directions by rotating the input shaft 3 or the second input shaft 5 with the manual handle 10. In the embodiment, the rotation transmission device 1 that cannot rotate in either direction and the output shaft 4 can be rotated only by the input shaft 3 is used as a rotating means for the sheet winding shaft 12 of the greenhouse. The user holds the grip 14 of the rotation transmission device 1 with one hand (left hand in FIG. 1) to maintain the use posture, and performs the rotation operation by grasping the grip of the manual handle 10 with the opposite hand (right hand). A guide pipe 13 is vertically passed through a through-hole 15 penetrating the center of the casing 2 of the rotation transmission device 1 in the vertical direction, with its lower end pierced into the ground. By causing the rotation transmission device 1 to move up and down along the guide pipe 13, the covering sheet 16 of the greenhouse can be rolled up or down along with the rotation of the sheet winding shaft 12, and the ventilation port can be opened and closed. it can.
Since the structure of the main part (inside of the casing 2) of the rotation transmission device 1 is disclosed in, for example, the above Patent Documents 1 to 4 and is already known and well known, its specific illustration and description are omitted.

As shown in FIGS. 1 and 2, the rotation transmission device 1 of the present invention is arranged so as to protrude parallel to the input shaft 3 on the side surface portion from which the input shaft 3 protrudes, and has the same shape and size as the input shaft 3. Two input shafts 5 are provided side by side, and a manual handle 10 common to both shafts 3 and 5 is used. As shown in FIGS. 2 to 4, the second input shaft 5 is provided on a bearing 2 a of a bearing portion formed on the casing 2 of the rotation transmission device 1 and a bearing plate 8 that covers the outer surface of the bearing portion of the casing 2. Both ends are supported by a bearing 8a. The bearing plate 8 is joined to the casing 2 with bolts 9. The bases of the input shaft 3 and the second input shaft 5 are integrally provided with gears 6 and 7 having the same shape and the same size (the same number of teeth), and the gears 6 and 7 are meshed and connected in series. . The gears 6 and 7 are housed in the recesses of the casing 2 and covered with the bearing plate 8, and only the outer end portions of the input shaft 3 and the second input shaft 5 protrude outward from the bearing plate 8. The end portions are configured as torque receiving portions 3 ′ and 5 ′ that can use the common manual handle 10.
Therefore, when the manual handle 10 is attached to the input shaft 3 and rotates in the normal rotation direction (clockwise), the output shaft 4 also rotates in the normal direction. When the manual handle 10 is attached to the second input shaft 5 and rotated in the normal forward direction (clockwise), the output shaft 4 rotates in the reverse direction (counterclockwise) due to the principle of gear transmission.

  The shaft coupling portion 11 of the manual handle 10 for rotating the input shaft 3 and the second input shaft 5 is configured as a torque transmitting portion 11 ′ that can be attached to and detached from the input shaft 3 and the second input shaft 5 in common. Yes. Specifically, as shown in FIG. 2 and FIG. 4, torque receiving portions of the same shape and the same size are provided at the outer ends of the input shaft 3 and the second input shaft 5, and in the case of the illustrated example, the key groove 3. “5” is formed. On the other hand, the manual handle 10 is engaged with the key grooves 3 ′ and 5 ′ of the input shaft 3 and the second input shaft 5 at the back end in the hollow portion 11 a of the shaft coupling portion 11, and transmits a torque transmission portion. As shown, a key 11 'is formed. That is, the shaft coupling portion 11 of the manual handle 10 is a simple operation simply by fitting and attaching to the outer end portion of the input shaft 3 or the second input shaft 5, and the key groove 3 ′ or 5 ′ and the key 11 ′. Are coupled so as to transmit the rotational force. Therefore, the manual handle 10 can use the input shaft 3 or the second input shaft 5 in accordance with the purpose of use (the rotation direction of the output shaft 4), and can be used in common (claims 2 and 3). invention).

  Of course, a configuration may be adopted in which a key is formed as the torque receiving portions 3 ′ and 5 ′ and a key groove is formed as the torque transmitting portion 11 ′. In addition to forming the torque receiving portions 3 ′ and 5 ′ and the torque transmitting portion 11 ′ as the key groove shape and the key shape, for example, a combination of a square shaft shape and a square hole shape that fit each other, or a hexagon It can also be implemented in relation to a combination of a shaft shape and a hexagonal hole shape (the invention according to claim 4).

  Since the rotation transmission device 1 of the present invention is configured as described above, for example, when the vinyl sheet winding shaft 12 is unwound, that is, when the output shaft 4 of FIG. 1 is rotated in the reverse direction (counterclockwise), When the manual handle 10 is attached to the second input shaft 5 and the second input shaft 5 is rotated in the forward rotation direction, the output shaft 4 is reversed by gear transmission. On the other hand, when the vinyl sheet winding shaft 12 is wound up, that is, when the output shaft 4 is rotated in the normal rotation direction (clockwise), the manual handle 10 is attached to the input shaft 3 and the input shaft 3 is also rotated in the normal rotation direction ( Rotate clockwise. That is, the forward rotation and the reverse rotation of the seat winding shaft 12 (opening and closing of the ventilation opening) are performed in one direction (forward rotation = clockwise) that the user is always good at using the manual handle 10 by properly using the input shaft 3 and the second input shaft 5. Since it can be freely opened and closed by rotating it only in the rotation direction), it is easy to use and the work efficiency can be improved.

  Although illustration is omitted, the rotation transmission device 1 of the present invention is used for rotating the sheet winding shaft 12 for opening and closing the ventilation opening provided on the side surface of the greenhouse shown in FIG. It can be used for rotation of a sheet winding shaft that opens and closes a ventilation opening provided in a valley portion of a house, or can be used for other purposes.

  FIG. 5 shows an embodiment in which the small gear 7 provided at the base of the second input shaft 5 has 15 teeth and the large gear 6 provided on the input shaft 3 has 30 teeth. That is, the rotation of the second input shaft 5 is transmitted to the input shaft 3 and the output shaft 4 at a half rotational speed, and conversely, the output shaft 4 can be rotated with twice the torque. It should be noted that the gear ratio between the gears 6 and 7 of the input shaft 3 and the second input shaft 5 can be implemented by a gear ratio corresponding to the speed at which the output shaft 4 is desired to rotate (invention according to claim 5). ).

  Therefore, the rotation of the output shaft 4 with a large rotational load, such as when the vinyl sheet winding shaft 12 is wound, is decelerated, but conversely, a configuration of a speed ratio (tooth number ratio) that can provide a boosting effect can be implemented. In this way, the rotational load on the manual handle 10 can be reduced to ½, and the manual handle 10 can be rotated without difficulty even for women and elderly people. On the other hand, when the rotation of the output shaft 4 is small, such as when the seat winding shaft 12 is unrolled, the output shaft 4 can rotate at a 1: 1 rotation ratio with the manual handle, thus quickly closing the opening. Can be done.

  Although the present invention has been described above based on the embodiments, the present invention is not limited to the illustrated embodiments. The present invention can be implemented in various forms without departing from the gist of the present invention.

It is the perspective view which showed the use condition of the rotation transmission apparatus which concerns on this invention. It is the perspective view which showed the state which removed the manual handle from the input shaft and the 2nd input shaft. It is the perspective view which showed the internal structure of the rotation transmission apparatus which concerns on this invention. It is a cross-sectional view of the rotation transmission device according to the present invention. It is the perspective view which showed the internal structure of the rotation transmission apparatus of Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotation transmission apparatus 2 Casing 3 Input shaft 3 ', 5' Torque receiving part 4 Output shaft 5 2nd input shaft 6, 7 Gear 10 Manual handle 11 Shaft coupling part 11 'Torque transmission part

Claims (5)

By rotating the input shaft, the output shaft can be freely rotated in both forward and reverse directions, but the output shaft is configured to be unable to rotate in either the forward or reverse direction even if it receives a rotational force.
A second input shaft protruding parallel to the input shaft is installed on a side surface portion of the rotation transmission device from which the input shaft protrudes;
The gears provided at the base of the second input shaft are meshed with the gears provided at the input shaft, and both shafts are connected,
A rotation transmission device, wherein a common manual handle is attached to the input shaft and the second input shaft, and is configured to be removable. A torque receiving portion having a common configuration is formed at the outer ends of the input shaft and the second input shaft,
The shaft coupling portion of the manual handle is formed with a torque transmission portion that is connected to the torque receiving portions of the input shaft and the second input shaft and transmits a rotational force.
When the shaft coupling portion of the manual handle is attached to the outer end portion of the input shaft or the second input shaft, the torque receiving portion and the torque transmitting portion are connected to be able to transmit a rotational force. The rotation transmission device according to claim 1.   The rotation transmission device according to claim 2, wherein the torque receiving portion and the torque transmission portion are configured to be connectable with either one as a key and the other as a key groove.   3. The rotation transmission device according to claim 2, wherein the torque receiving portion and the torque transmission portion are configured so that one of them is a square shaft or a hexagonal shaft and the other is a square hole or a hexagonal hole. .   The number of teeth of the gear of the input shaft and the number of teeth of the gear of the second input shaft are constituted by an inverse ratio of a speed at which the output shaft is desired to rotate through the second input shaft. The rotation transmission device according to any one of the above.

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