JP7425466B2 - Automatic opening/closing device for curtain materials - Google Patents

Description

The present invention relates to an automatic opening/closing device for curtain materials, which controls the opening and closing of curtain materials used, for example, in greenhouses.

2. Description of the Related Art Conventionally, in order to automatically open and close curtain materials in, for example, greenhouses, automatic opening and closing devices have been used in which a winding shaft of the curtain material is rotated by a motor to automatically wind up and feed out the curtain material.

Patent Document 1 describes a connecting shaft connected to a winding shaft that winds up and unwinds a greenhouse sheet to open and close it, a drive unit that rotates this connecting shaft, and a device for winding up and unwinding a greenhouse sheet. A greenhouse seat opening/closing device is disclosed, which includes a control section for controlling the greenhouse sheet.

The control unit casing that houses the control unit has a motor that automatically controls the width of the greenhouse sheet to be opened and closed, and when the greenhouse sheet reaches the winding limit position or rewinding limit position. The control unit includes gears, limit switches, etc. necessary for controlling the rotation of the greenhouse seat to stop, and electronic circuits for controlling the opening/closing device of the greenhouse sheet under arbitrary conditions.

The first limit switch is switched at the winding limit position to stop the winding of the greenhouse sheet and a predetermined amount is released, and the second limit switch is switched at the winding limit position to stop winding the greenhouse sheet. It stops rewinding and closes a predetermined amount.

Japanese Patent Application Publication No. 2002-305990

In such a conventional greenhouse sheet opening/closing device, the limit switch is set in advance at the off position so that the greenhouse sheet stops at a predetermined winding limit position and rewinding limit position after the opening/closing operation. The control section houses gears, limit switches, electronic circuits, etc.

In recent years, in order to maintain the environment of an internal space partitioned by curtain materials within a predetermined range against fluctuations in internal and external environmental conditions, such as in a greenhouse, for example, the amount of opening and closing of curtain materials has been changed as appropriate. That is required. However, in the conventional greenhouse sheet opening/closing device, in order to change the opening/closing amount of the greenhouse sheet in response to daily weather changes around the greenhouse, gears, limit switches, etc. housed in the control section, It is necessary to take the electronic circuit outside and change the setting of the switching position of the limit switch.

That is, from the current setting where the first limit switch switches in the rewind limit position and the second limit switch in the rewind limit position, respectively, switches to another position corresponding to the detected weather change. After changing the settings so that the greenhouse seat stops, the control must be re-installed with gears, limit switches, electronic circuits, etc. As described above, conventional opening/closing devices for curtain materials and greenhouse sheets have the problem that it takes a lot of work time to change the opening/closing position and opening/closing amount, and it is difficult to change the settings appropriately. be.

An object of the present invention is to solve the above-mentioned problems and to provide an automatic opening/closing device for curtain materials that can easily set the stop position when opening and closing the curtain materials.

To achieve the above object, an automatic opening/closing device for curtain material according to the present invention includes a rotation transmission section connected to a winding shaft that winds up and feeds out curtain material by a motor, and a rotation transmission section that meshes with the rotation transmission section to An automatic opening/closing device for curtain materials, comprising a stop position adjustment section for setting a stop position of the curtain material, and a switch section for turning off the motor at the stop position set by the stop position adjustment section, wherein the stop position adjustment section The section includes a first gear, a second gear, and a positioning section that are arranged sequentially from the rotation transmitting section side, and the first gear has a circular shape that meshes with the rotation transmitting section protruding from one side. The second gear has a substantially cylindrical shape, is coaxial with the first gear, has a hole in the center, and has a switch on the outer peripheral surface. a subshaft provided with a projection and protruding at a position eccentric from the center of the surface on the side of the first gear; and a subshaft that is rotatably supported by the subshaft and meshes with the internal gear of the first gear. and a rough surface formed on the cylindrical inner surface of the other side, and the positioning section includes an expansion plate provided on the second gear side and capable of expanding the outer diameter; a small gear that passes through the hole of the second gear provided at the center of the expansion plate; a cylindrical part provided on the opposite side of the second gear; and a cylindrical part provided on the opposite side of the second gear; Equipped with a push piece that expands,
The expansion plate is rotatably housed on the cylindrical inner surface of the second gear, and when the outer diameter is expanded, it presses against the rough surface and becomes unrotatable. passes through the hole and meshes with the planetary gear , and when the rotation transmitting part is in an immovable state and the pushing piece is not pushed into the cylindrical part, in response to rotating the cylindrical part. The stop position is adjusted by rotating the small gear and the planetary gear, and the switch protrusion of the second gear, and the stop position is adjusted by pushing the pushing piece into the cylindrical part. is set, and with the pushing piece pushed into the cylindrical part, the switch protrusion of the second gear, which rotates via the rotation transmission part by activation of the motor, pushes the switch part. , the motor is in an off state.

According to the automatic opening/closing device for curtain materials according to the present invention, it is possible to easily set the stopping position of the curtain materials. The opening and closing positions of the curtain material can be changed as appropriate in response to changes in environmental conditions.

It is a front view. It is a bottom view. FIG. It is a perspective view of a stop position adjustment part. It is an exploded perspective view of a stop position adjustment part. FIG. 3 is an explanatory diagram of the operation of the stop position adjustment section. FIG. 2 is a perspective view of an automatic opening/closing device installed in a greenhouse.

The present invention will be explained in detail based on illustrated embodiments.
FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG. 3 is a side view. The automatic opening/closing device for curtain material has a rotation transmitting section 1 which is connected to and rotates a winding shaft for winding/feeding out curtain material by a motor (not shown) that rotates in both forward and reverse directions, and a rotation transmitting section 1 that is engaged with the rotation transmitting section 1. It has a stop position adjustment section 2 that sets the stop position of the curtain material, and a switch section 3 that turns off the motor at the stop position set by the stop position adjustment section 2, and these rotation transmission section 1 and stop position adjustment section 2. The switch section 3 is housed within the casing 4.

The rotation transmission unit 1 is connected to a worm gear W on a curtain material take-up shaft connected to a drive shaft of a motor, or to a relay shaft from the take-up shaft via a deceleration mechanism composed of a plurality of gears, etc. A coupling gear 11 such as a worm wheel meshing with the worm gear W, and a transmission gear 12 consisting of a pair of first and second transmission gears 12a and 12b coaxially supported in the left and right direction of the coupling gear 11. has. The connecting gear 11 and the transmission gear 12 are made of a resin having excellent wear resistance and impact resistance and self-lubricating properties, such as polyacetal, preferably polyoxymethylene (also known as POM or Duracon).

The rotation shafts 13 of the connection gear 11 and the transmission gear 12 are made of metal, and are rotatably attached to the side wall surface inside the casing 4. Further, the worm gear W of the take-up shaft or the relay shaft is incorporated into the casing 4 through an opening 4a provided in the casing 4.

The stop position adjustment section 2 consists of a first stop position adjustment section 2a for setting the open position of the curtain material, and a second stop position adjustment section 2b for setting the closed position. The stop position adjustment parts 2a and 2b are connected to the first and second transmission gears 12a and 12b of the rotation transmission part 1, respectively. In addition, if only one of the open position or the closed position of the curtain material is set, and the other is set in advance at the position where the curtain material is completely wound up or fed out, the transmission gear 12, the stop position adjustment section It is also possible to configure one each of 2.

Furthermore, if the curtain material can be set to stop at an intermediate position in addition to the open position and the closed position, three or more transmission gears 12 of the same number as the stop positions, and a stop position adjustment section are provided. It is also possible to have a configuration having 2. In this case, it goes without saying that the number of switch sections 3 will be the same as the number of transmission gears 12 and stop position adjustment sections 2.

The same number of stop position adjustment units 2 and switch units 3 as the transmission gears 12 are provided, but since they all have the same configuration, hereinafter, the first and second transmission gears 12a and 12b and the first and second transmission gears 12a and 12b will be referred to. Only the configuration in which the second stop position adjustment parts 2a and 2b and the first and second switch parts 3a and 3b are provided in a pair on the left and right sides will be described.

FIG. 4 is a perspective view of the first stop position adjustment section 2a, and FIG. 5 is an exploded perspective view of the first stop position adjustment section 2a. It is composed of a second gear 22 and a positioning section 23.

The first gear 21 has protruding teeth of an annular gear 21a that meshes with the first transmission gear 12a on one side on the side of the rotation transmission unit 1, and has a cylindrical inner surface on the other side on the second gear 22 side. An internal gear 21b is provided. A central shaft 21c fixed to the first gear 21 is rotatably inserted into a locking portion 4b protruding inward from the rear wall surface of the casing 4.

The annular gear 21a meshes with the first transmission gear 12a at the end face of the annular ring, and when the first transmission gear 12a rotates, the annular gear 21a rotates in a subordinate manner, so that the entire first gear 21 rotates. has been done. Furthermore, a shaft hole 21d is formed in the center of the central shaft 21c of the first gear 21 to coaxially attach the second gear 22 and the positioning part 23.

The substantially cylindrical second gear 22 has a hole 22a in the center and has a hole 22a on the outer peripheral surface so that the center axis 21c of the first gear 21 is coaxial with the mounting axis of the positioning part 23, which will be described later. A switch protrusion 22b is provided. A subshaft 22c is protruded from the surface of the second gear 22 on the first gear 21 side at a position eccentric from the center, and a planetary gear 22d is rotatably supported by the subshaft 22c. This planetary gear 22d is meshed with the internal gear 21b of the first gear 21. On the other side of the second gear 22, a rough surface 22e is formed on the cylindrical inner surface.

The positioning part 23 includes an expansion plate 23a provided on the side of the second gear 22 that can expand the outer diameter, a cylindrical part 23b provided on the opposite side to the second gear 22, and a cylindrical part 23b inserted into the cylindrical part 23b. It is provided with a cylindrical pushing piece 23c that is freely movable and expands the outer diameter of the expanding plate 23a by being pushed into the cylindrical portion 23b. A small gear 23d is fixed to the center of the expansion plate 23a on the second gear 22 side, and a notch 23e is formed from the center to the periphery. A protrusion 23f for opening is protruded. Furthermore, a non-slip member 23g for operation is formed around the cylindrical portion 23b.

In FIG. 5, one notch 23e and one protrusion 23f are formed, but a plurality of them may be provided at equal intervals in the circumferential direction of the expanding plate 23a and the pushing piece 23c. When the outer diameter of the expansion plate 23a is not expanded, the expansion plate 23a is rotatably housed within the cylindrical surface of the rough surface 22e of the second gear 22. The pushing piece 23c is slidable in the front-rear direction within the cylindrical portion 23b, and when the protruding portion 23f is pushed into the notch 23e, the outer diameter of the expanding plate 23a is expanded to the periphery, and the expanding plate 23a is connected to the second gear. It is pressed against the rough surface 22e of 22 and becomes unrotatable.

A metal attachment shaft 23h that supports the positioning portion 23 and the second gear 22 coaxially with the first gear 21 projects from the center of the small gear 23d. The mounting shaft 23h and the small gear 23d sequentially pass through the hole 22a of the second gear 22, the mounting shaft 23h is rotatably inserted into the shaft hole 21d of the first gear 21, and the small gear 23d passes through the hole 22a of the second gear 22. It is meshed with the No. 22 planetary gear 22d. That is, the first stop position adjusting section 2a has a structure in which the first gear 21, the second gear 22, and the positioning section 23 are coaxially integrated by the mounting shaft 23h of the positioning section 23.

It should be noted that each member constituting the first gear 21, second gear 22, and positioning part 23 has wear resistance and wear resistance similar to each member of the rotation transmission part 1, except for the metal mounting shaft 23h. Made of resin with excellent impact resistance and self-lubricating properties.

A first switch section 3a that turns off the motor that winds up/feeds out the curtain material is arranged at the upper part of the first stop position adjustment section 2a near the second gear 22. This first switch section 3a is attached to the rear wall surface inside the casing 4 via a base 31, and includes a limit switch 32.

The limit switch 32 is configured to be turned off when a lever portion 32a provided on the lower surface is pushed upward. The lever portion 32a is arranged so that it comes into contact with the switch protrusion 22b and is pushed upward during one rotation of the second gear 22, thereby turning off the limit switch 32. Further, the output line of the off signal of the limit switch 32 is connected to a drive power source for a motor (not shown).

Note that the first switch section 3a may be provided with existing switching means such as a proximity switch instead of the limit switch 32. Further, the second stop position adjustment section 2b and the second switch section 3b have the same configurations as the first stop position adjustment section 2a and the first switch section 3a, respectively, so a description thereof will be omitted.

When controlling the opening and closing of the curtain material using the automatic curtain material opening/closing device configured as described above, the opening and closing positions of the curtain material are set by the first and second stop position adjusting sections 2a and 2b. For example, the following description will be made assuming that the first stop position adjusting section 2a sets the open position of the curtain material, and the second stop position adjusting section 2b sets the closed position of the curtain material.

FIG. 6 is an explanatory diagram of the operation of the first and second stop position adjusting sections 2a and 2b, in which (a) is a front view and (b) is a bottom view. When operating the first stop position adjustment section 2a to set the open position of the curtain material, use a winding shaft (not shown) for winding/feeding out the curtain material, or a plurality of gears from the winding shaft. The worm gear W provided on the relay shaft is meshed with the connecting gear 11 via a speed reduction mechanism to drive a motor that winds up/feeds out the curtain material. The curtain material is wound up or fed out to the desired open position and the motor is stopped to maintain the open state of the curtain material.

Subsequently, in the positioning section 23 of the first stop position adjustment section 2a, the pushing piece 23c is pulled out from inside the cylindrical section 23b, and the projection 23f of the pushing piece 23c is pulled out from the notch 23e of the expansion plate 23a. The expansion plate 23a returns to its original outer diameter from the expanded state and becomes rotatable within the rough surface 22e of the second gear 22, allowing the positioning portion 23 to be rotated manually.

When the positioning portion 23 is manually rotated using the anti-slip member 23g around the mounting shaft 23h, the small gear 23d rotates, and the planetary gear 22d of the second gear 22 and the first gear 21 are sequentially meshed with each other. An attempt is made to rotate the first gear 21 by rotating the internal gear 21b. At this time, the annular gear 21a of the first gear 21 is meshing with the transmission gear 12 of the rotation transmission section 1, but since the motor is stopped, the first transmission gear 12a is locked and immovable. As a result, the annular gear 21a, that is, the first gear 21 does not rotate, but the second gear 22 rotates.

In this way, by manually rotating the positioning part 23, the second gear 22 is rotated until the switch protrusion 22b pushes up the lever part 32a of the limit switch 32 in the first switch part 3a. Rotate further. Then, at the timing when the switch protrusion 22b pushes the lever part 32a upward, the manual rotation of the positioning part 23 is stopped, the pushing piece 23c is pushed into the cylindrical part 23b, and the protrusion part 23f is inserted into the notch of the expansion plate 23a. The outer diameter of the expanding plate 23a is expanded by pushing it into the portion 23e. In the expanded state, the expansion plate 23a is pressed against the rough surface 22e of the second gear 22 and becomes unrotatable.

In other words, the positioning part 23 is fixed integrally with the first gear 21 and the second gear 22, and cannot be rotated manually. Only when the first transmission gear 12a is rotated by the drive of the motor, the entire first stop position adjusting section 2a rotates as a unit, and the setting of the open position of the curtain material is completed.

When the motor is driven to wind up the curtain material to the set open position by performing the setting operation of the positioning section 23 described above, the first gear 21 and the second gear 22 are rotated by the rotation of the first transmission gear 12a. , the positioning part 23 rotates as one unit, the switch protrusion 22b pushes up the lever part 32a of the limit switch 32, and an OFF signal is output to the motor drive power source. The driving power for the motor is stopped, and the winding of the curtain material is stopped at the set open position. When the curtain material is wound up to the set open position, the limit switch 32 turns off the motor drive power, which is a cooperative operation in which the above-mentioned setting operation of the positioning unit 23 is newly performed and another position is changed to the stop position. It will remain unless you set it.

When operating the second stop position adjustment section 2b to set the closing position of the curtain material, the motor for winding/feeding the curtain material is driven to wind or unwind the curtain material to the desired closing position. After feeding, the motor is stopped to maintain the curtain material in the desired closed state. The subsequent operation of the second stop position adjustment section 2b is the same as the operation of the first stop position adjustment section 2a when setting the open position, so a description thereof will be omitted.

Note that the setting of the stop position of the curtain material by the first and second stop position adjustment units 2a and 2b is not limited to the open position and the closed position of the curtain material, but can be set to any stop position. .

By manually operating the stop position adjustment section 2 as described above, the opening and closing positions of the curtain material can be easily set, and the environment in the space partitioned by the curtain material, such as the temperature and humidity in a greenhouse, can be adjusted. This is suitable for applications where curtain materials are maintained by opening and closing.

FIG. 7 is a perspective view of the above-described embodiment applied to opening and closing curtain material in a greenhouse. Curtain materials C are stretched around frame materials F on the left and right sides of the greenhouse G. A winding shaft S is attached to the lower end of the curtain material C, and by rotating the winding shaft S in one direction, it rises while winding up the curtain material C, releases the curtain material C, and moves in the other direction. By rotating the curtain material C, the curtain material C is lowered while being sent out, and the curtain material C is closed.

A columnar support member P is installed near the left and right side surfaces of the greenhouse G, and the support member P is provided with a moving drive unit D that can move up and down as the winding shaft S moves up and down. The moving drive section D includes a motor connected to the winding shaft S via a speed reduction mechanism, and winds up/feeds out the curtain material C by rotating the winding shaft S. Note that the drive switch for the motor (not shown) is provided separately from the movable drive unit D so that it can be easily operated even when the movable drive unit D moves to a high place as the curtain material C is wound up. , for example, are installed at easy-to-operate positions on the front and rear sides of the greenhouse G.

Further, the automatic opening/closing device for the curtain material of this embodiment is attached to the support member P via the moving drive unit D, and the automatic opening/closing device for the curtain material according to this embodiment is attached to the support member P, and is adapted to the rise and fall of the winding shaft S as the curtain material C is wound/feeded out. Thus, it is movable in the vertical direction along the support member P together with the moving drive unit D. Furthermore, the worm gear W provided on the take-up shaft S or a relay shaft connected from the take-up shaft S via the reduction mechanism is incorporated into the casing 4 from the opening 4a as shown in FIGS. 1 to 3, and rotates. It meshes with the connecting gear 11 of the transmission section 1.

When controlling the opening and closing of the curtain material C in the greenhouse G, the opening and closing positions of the curtain material C are set in advance by the stop position adjustment section 2. For example, when the temperature or humidity inside the greenhouse G exceeds a predetermined value, the curtain material C is opened to a predetermined open position, and when the temperature or humidity within the greenhouse G becomes below a predetermined value, the curtain material C is moved to a predetermined closed position. Set to close until. That is, as described above, the first stop position adjustment section 2a is operated to set the open position of the curtain material C, and the second stop position adjustment section 2b is further operated to set the closed position of the curtain material C. .

When opening/closing control of the curtain material C is started, if the temperature or humidity in the greenhouse G is above a predetermined value, the drive power of the motor is turned on in the forward direction by a temperature/humidity detection control means (not shown). After the curtain material C is wound up to the set opening position, the first switch section 3a is turned off by the first stop position adjustment section 2a, the driving power of the motor is stopped, and the curtain material C is opened. The current state will be maintained.

When the temperature or humidity falls below a predetermined value due to the curtain material C being open, the driving power of the motor is turned on in the opposite direction by the temperature/humidity detection control means. After the curtain material C is fed out to the set closing position, the second switch section 3b is turned off by the second stop position adjustment section 2b, the driving power of the motor is stopped, and the curtain material C is in the closed state. becomes.

In addition, when the number of times the curtain material C is opened and closed is small, about once per day, the motor drive power source should be turned on in the forward or reverse direction manually without using the temperature/humidity detection control means. Good too.

As mentioned above, there are three simple manual steps: pull out the pushing piece 23c of the positioning part 23 of the stop position adjustment part 2 from inside the cylindrical part 23b, rotate the positioning part 23, and push the pushing piece 23c into the cylindrical part 23b again. The opening/closing position of the curtain material C can be easily set only by operation. Since no electric system such as an electric control circuit is used to set the open/close position, it can be operated stably for a long period of time at low cost.

1 Rotation transmission section 2, 2a, 2b Stop position adjustment section 21 First gear 21a Annular gear 21b Internal gear 22 Second gear 22a Hole section 22b Switch protrusion 22c Subshaft 22d Planetary gear 23 Positioning section 23a Expansion plate 23b Cylindrical part 23c Push piece 23d Small gear 23e Notch part 23f Projection part 3, 3a, 3b Switch part W Worm gear

Claims (4)

A rotation transmission part connected to a winding shaft that winds up and feeds out curtain material by a motor, a stop position adjustment part that meshes with the rotation transmission part and sets a stop position of the curtain material, and a stop position adjustment part. An automatic opening/closing device for curtain material, comprising a switch section that turns off the motor at a set stop position,
The stop position adjustment section includes a first gear, a second gear, and a positioning section that are sequentially arranged from the rotation transmission section side,
The first gear includes an annular gear that meshes with the rotation transmission portion protruding from one side, and an internal gear provided on the other side,
The second gear has a substantially cylindrical shape, is coaxial with the first gear, has a hole in the center, has a switch protrusion on its outer circumferential surface, and has a switch protrusion on its outer peripheral surface. a subshaft protruding eccentrically from the center; a planetary gear rotatably supported by the subshaft and meshing with the internal gear of the first gear; and a planetary gear formed on the cylindrical inner surface of the other side. with a roughened surface,
The positioning section includes an expansion plate provided on the side of the second gear that can expand the outer diameter, a small gear that passes through a hole of the second gear provided at the center of the expansion plate, and a small gear that passes through a hole of the second gear provided at the center of the expansion plate. a cylindrical part provided on the opposite side of the second gear; and a pushing piece that expands the outer diameter of the expansion plate by pushing into the cylindrical part,
The expansion plate is rotatably housed on the cylindrical inner surface of the second gear, and when the outer diameter is expanded, it presses against the rough surface and becomes unrotatable. passes through the hole and meshes with the planetary gear ,
When the rotation transmitting part is in an immovable state and the pushing piece is not pushed into the cylindrical part, the small gear and the planetary gear are rotated in response to rotating the cylindrical part, Adjusting the stop position by rotating the switch protrusion of the second gear, and setting the stop position by pushing the push piece into the cylindrical part,
With the pushing piece pushed into the cylindrical part, the switch protrusion of the second gear, which rotates via the rotation transmitting part when the motor is started, pushes the switch part, so that the motor is activated. An automatic opening/closing device for curtain materials characterized by being in an off state. The pushing piece has a protrusion protruding at its tip, and the expansion plate has a notch formed from the center to the periphery,
When the pushing piece is pushed into the cylindrical part, the protruding part of the pushing piece pushes open the notch of the expanding plate, and the outer diameter of the expanding plate expands, so that the expanding plate is expanded. A claim characterized in that the opening plate presses the rough surface formed on the inner surface of the other side of the second gear and becomes unrotatable, thereby integrating the positioning portion and the second gear. Item 1. The automatic opening/closing device for curtain materials according to item 1 . Start the motor, wind up or feed out the curtain material to a set open position, then stop the motor, and pull out the pushing piece from the cylindrical part so that it is not pushed into the cylindrical part. , the positioning part is rotated until the switch protrusion of the second gear pushes the switch part, and the pushing piece is moved to the position where the switch protrusion of the second gear pushes the switch part. The automatic opening/closing device for curtain material according to claim 1 or 2, wherein the stop position is set by pushing the curtain material into a cylindrical portion. A claim characterized in that the stop position adjustment section includes a first stop position adjustment section that sets an open position of the curtain material, and a second stop position adjustment section that sets a closed position of the curtain material. The automatic opening/closing device for curtain materials according to any one of Items 1 to 3.

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