JP2000300086A - Tool for winding roof sheet or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool for winding a roof sheet or the like capable of preventing an external force from directly applying to a joint part when an input shaft is kept in a state thereof intersecting an output shaft at right angles in the tool for winding comprising a winding shaft connected through a universal joint to the input shaft. SOLUTION: The characteristic of this tool for winding a roof sheet or the like comprises a socket part 20 on the output side connected to a winding shaft 4 and an input shaft 1 connected through a universal joint 2 so that the input shaft 1 can be raised and fallen in the peripheral direction from a state along the shaft center of the socket 20 to a state intersecting the shaft center at nearly right angles and further plural engaging pieces 3 located in places separated at prescribed distances from the outer peripheral part in the peripheral direction, capable of engaging with the rotative direction of the socket part 20 in the state of the input shaft 1 displaced so as to intersect the shaft center of the socket part 20 at nearly right angles and fixed at a prescribed angular interval in the outer peripheral part of the socket part 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stretched on a roof of a greenhouse or a temporary house, a cold gauze or a light-shielding sheet stretched on a roof of a greenhouse, other roof sheets, and a sheet holding rope for holding the roof sheet. The present invention relates to a winding device such as a roof sheet for winding and rewinding.

[0002]

2. Description of the Related Art The inventor has proposed a winder such as a roof sheet described in Japanese Patent Publication No. 3-57265. As shown in FIG. 8, the winding device described in the above publication has a socket 20 on the output side and a socket 2 on the input side.
1, the end of the pipe-shaped take-up shaft 4 is inserted into the socket 20 on the output side and connected with the push screw 20b, and the socket 21 on the input side is used.
Insert the end of the pipe-shaped input shaft 1 and press the screw 21b
This is a concatenation of these.

[0003] The socket portions 20 and 21 of the universal joint 2 are
A bifurcated portion 20 is attached to the connecting end of a pipe-shaped member of the same diameter and length.
a, 21b, respectively, and the two forked portions 20a, 21a
Are connected via a block-shaped universal joint core 22. The universal joint core 22 is rotatably connected to the bifurcated portion 20a of the output side socket portion 20 by a shaft pin 23, and is slightly separated from the shaft pin 23 by a shaft pin 24 that intersects at right angles. It is rotatably connected to the forked portion 21a of the socket portion 21. Therefore, the input shaft 1 operates so as to fall in the circumferential direction with respect to the socket 20 on the output side from a state along the axis of the socket 2 to a state intersecting the axis at a substantially right angle.

A collar 10a is fixed to the tip of the input shaft 1 by a push screw 10b.
A handle 10 bent in the shape of a letter is attached. A rotatable cylindrical grip 11 is attached to the input shaft 1 near the handle 10. Reference numeral 13 denotes a ring-shaped stopper fixed to the input shaft 1 by a push screw 13a, and restricts the grip 11 from moving.

[0005] In order to wind up a roof sheet of a general vinyl greenhouse, for example, with the above-mentioned winder, a roof sheet a made of a vinyl film stretched on a pipe-shaped roof bone 5 has an eaves side (hem side). The end is fixed to the winding shaft 4, and the input shaft 1 is operated by the handle 10 from the side of the winding shaft so that the winding shaft 4
Is rotated in the winding direction. When the take-up shaft 4 is rotated in this manner, the take-up shaft 4 rolls on the roof bone 5 toward the ridge top, and accordingly, the roof sheet a is taken up by the take-up shaft 4. On the other hand, when the winding shaft is rotated in the opposite direction, the roof sheet a is unwound and stretched. At the time of winding, the rolling position of the winding shaft 4 becomes higher (the level of the winding shaft 4 becomes higher) as it moves toward the roof top, so that the angle of the input shaft 1 with respect to the winding shaft 4 accordingly. Gradually becomes smaller as approaching a right angle. When it is desired to stop winding or rewinding during winding or rewinding, the input shaft 1 is made perpendicular to the winding shaft 4.
When the input shaft 1 is made vertical as described above, the take-up shaft 4 stops at that position under the weight of the input shaft 1, and does not move unless an external force greater than the weight of the input shaft 1 is applied in the rotation direction.

FIG. 7 shows an example of a vinyl greenhouse, in which a roof 52 made of a bent iron pipe is connected so as to be entirely arched by a joint 52 at the top of the ridge. A large number of the roof bones 5 are arranged side by side at predetermined intervals along the ridge direction, and the ridge tops of the respective roof bones 5 are connected to each other by a ridge top member 50 made of an iron pipe. They are connected to each other by a plurality of aggregates (not shown) made of various materials.
The roof bone 50 on the wife side is supported in a fixed state by a support member 51 appropriately combined.

A roof sheet a is stretched on the roof bone 5 with one end fixed to the ridge top member 50 and the other end fixed to the eave-side winding shaft 4 on the side of the greenhouse. . At the side of the greenhouse, downwardly facing pocket-like members 6 are mounted along the ridge direction by mounting brackets 60 at appropriate positions in the hem direction of the roof bones 5, and the roof sheet a is spread on the roof surface and stretched. In order to make the roof sheet a, the roof sheet a is once completely rewound as shown by a two-dot chain line in the figure. The take-up device rotates the take-up shaft 4 in the opposite direction (reverse direction to the take-up direction) and winds the inside of the pocket-like member 6. 7, the roof sheet a is configured to be urged in a direction in which the roof sheet a is wound into the pocket-shaped member 6. With such a configuration, for example, when the roof sheet a is pulled in the ridge top direction by an external force such as wind, the winding shaft 4 rotates in a direction opposite to the winding direction to absorb the external force, and the external force is eliminated. And the amount of the roof sheet a pulled up by the external force by the action of the coil spring 7 is operated so as to be wound into the pocket-shaped member 6. On the side of the greenhouse, a side sheet a1 made of a vinyl film is fixedly attached to a portion below the pocket-shaped member 6.

The roof sheet a may be held between the roof bones 5 by a sheet holding rope (not shown) having one end fixed to the ridge top member 50 and the other end in the eaves direction fixed to the winding shaft 4. However, in such a case, the above-mentioned winding tool is used in a similar manner.

[0009]

The take-up device such as a roof sheet is stopped at an appropriate position in the middle of winding and rewinding of the roof sheet by the take-up shaft 4 as described above, and the input shaft. 1 is suspended vertically. When the roof sheet is maintained on the roof surface, the output shaft 4
7, the input shaft 1 is made to intersect at a substantially right angle, and the input shaft 1 is spring-biased in a direction in which the roof sheet a and the like are wound into the pocket-shaped member 6 as shown in FIG. In such a state, an excessive external force may act on the universal joint portion (the connecting portion between the universal joint core and the forked portion of each socket portion) of the winding device due to wind and rain or other external force, and the external force may cause the winding. In some cases, the universal joint portion of the fixture was deformed, and the function could not be exhibited smoothly, or the durability of the universal joint portion could not be maintained. An object of the present invention is to provide a winding device in which an input shaft and a take-up shaft are connected via a universal joint portion, and when the input shaft is set to a position such that the input shaft intersects at substantially a right angle with respect to the take-up shaft, An object of the present invention is to provide a durable winder by preventing external force from being applied.

[0010]

A winder such as a roof sheet according to the present invention has the following construction to solve the above-mentioned problems. That is, the winder such as the roof sheet according to claim 1 has a socket 20 on the output side to which the winding shaft 4 is connected, and a state along the axis of the socket 20 with respect to the socket 20. An input shaft 1 that is connected so as to be tiltable in the circumferential direction to a state where the input shaft 1 intersects the axis at a substantially right angle, and a handle 10 that is fixed to the tip of the input shaft 1 to rotate the input shaft 1. A grip 11 rotatably mounted on the input shaft 1 in the vicinity of the handle 10;
It is located at a predetermined distance in the circumferential direction from the outer peripheral portion, and
In a state where the input shaft 1 is displaced so as to intersect at a substantially right angle with respect to the axis of the socket portion 20, the socket portion 20 is displaced.
A plurality of locking pieces 3 locked in the rotation direction are provided at predetermined angular intervals.

According to a second aspect of the present invention, there is provided a winder such as a roof sheet according to the first aspect, wherein the output side socket portion is connected to an end of the socket portion. 21 together with the universal joint 2, wherein the input shaft 1 is detachably connected to the socket 21 on the input side.

According to a third aspect of the present invention, there is provided a winder such as a roof sheet according to the first or second aspect, wherein each of the locking pieces 3 is fixed in a flange shape to the socket portion 20 on the output side. It is characterized by being provided upright on the outer peripheral portion of the substrate 30.

A winder such as a roof sheet according to a fourth aspect is characterized in that, in the winder according to the third aspect, each of the locking pieces 3 is formed integrally with the substrate 30. I have.

A winder such as a roof sheet according to a fifth aspect is characterized in that, in the winder according to the third aspect, each locking piece 3 is a pin or a rod fixed to the substrate 30. I have.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a winder such as a roof sheet according to the present invention will be described with reference to FIGS. In the following description, the same components as those of the winder of FIG. 8 are denoted by the same reference numerals, and description thereof may be omitted.

First Embodiment FIG. 1 is a partial perspective view showing a first embodiment of a winder such as a roof sheet according to the present invention, and FIG. 2 is an enlarged sectional view of a main part of the winder shown in FIG. FIG. 3 is a partial perspective view of the take-up device of FIG. 1 in a state where the input shaft is displaced so as to intersect at approximately 90 degrees with the socket portion on the output side.

One end of the socket 20 on the output side is arranged so that the socket 20 can be turned upside down in the circumferential direction from a state along the axis of the socket 20 to a state intersecting the axis at a right angle. The input shaft 1 is connected. In this embodiment, the socket 20 on the output side is
The input shaft 1 is inserted into the socket 21 on the input side, and the push shaft 21b is inserted into the socket 21 on the input side. It is connected to the socket part 21. The output side socket part 20 shown in FIG.
Thereby, the winding shaft 4 of FIG. 1 is connected.

As shown in FIG. 2, the universal joint 2 has substantially the same structure as that of the conventional joint described with reference to FIG. That is,
A forked portion 20a, 2 is attached to one end of a metal pipe-shaped member having the same diameter.
1b to form socket portions 20 and 2 on the input / output side, respectively.
1 is processed, and the socket 2 on the output side is
In addition, the universal joint core 22 is rotatably connected to the forked part 20a of the input side, and the fork part 21a of the socket part 21 on the input side is formed by the shaft pin 24 intersecting the shaft pin 23 at a position slightly apart from the fork part. The universal joint 2 is configured by rotatably connecting the universal joint core 22 to the tongue.
The universal joint core 22 freely rotates with respect to the shaft pin 23 of the output-side socket portion 20 and also freely rotates with respect to the input-side shaft pin 24 that intersects the shaft pin 23 at a substantially right angle. Therefore, the input shaft 1 operates so as to fall in the circumferential direction with respect to the output side socket portion 20 from a state along the axis of the socket portion 20 to a state intersecting at a right angle with the axis. The input shaft 1 is provided with a handle 10, a grip 11 and a stopper 13 similarly to the winding tool of FIG. 8, and a hook piece 12 for connecting the coil spring 7 shown in FIG. Installed.

The outer peripheral portion of the output side socket portion 20 is located at a predetermined distance in the circumferential direction from the outer peripheral portion, and the input shaft 1 intersects at right angles to the axis of the socket portion 20. The plurality of locking pieces 3 locked in the rotational direction of the socket portion 20 in such a displaced state are attached at predetermined angular intervals. In this embodiment, a circular metal (iron plate) substrate 30 having eight locking pieces 3 is punched out in a state in which the input shaft 1 is cut out at a constant angular interval on an outer peripheral portion thereof. After processing the outer peripheral portion of the substrate 30 so as to be bent at a right angle, the substrate 30 is welded in a flange shape to the output-side socket portion 20 so that the input shaft 1 is connected to the outer peripheral portion of the output-side socket portion 20. Each locking piece 3 projecting to the side is attached.

When the winding device of the first embodiment is used for winding or rewinding a roof sheet a of a vinyl greenhouse as exemplified in FIG. 7, for example, the same as the conventional winding device shown in FIG. Then, the winding shaft 4 is fixed to the eave-side (hem side) end of the roof sheet a, one end of which is fixed to the ridge top member 50, and the end of the winding shaft 4 on the output side of the winding tool. Socket part 20
Connect to and use. The operation procedure of the winding device is almost the same as that of the conventional winding device. By the winding shaft 4 connected to the output side of the winding device, the roof of the greenhouse is gradually opened when the roof sheet a is wound, and the roof is gradually closed when the roof sheet a is rewound. Become. In this process, when the degree of opening and closing of the roof reaches a desired amount, the operation of winding and rewinding the roof sheet a by the winding tool is stopped, and the input shaft 1 is moved to the winding shaft 4. Position in a vertical direction so as to intersect at 90 degrees. At this time, the input shaft 1 is locked to the locking piece 3 located below in the rotation direction. In this state, when a force exceeding a predetermined level is applied in the rotation direction of the take-up shaft 4 via the roof sheet a by, for example, wind, the input shaft 1 rotates in the direction in which the force acts, but the external force is taken up. Shaft 4 (socket 20)
It hardly acts on the joint between the shaft and the input shaft 1 (socket 21), and the external force in the rotation direction is applied to the socket 20 on the output side via the locking piece 3. In this way, since the universal joint is protected from external force, deformation and distortion of the universal joint are prevented, and the durability of the winding tool is dramatically increased.

On the other hand, when the roof sheet a is maintained in a state of being spread over the entire surface of the roof, the roof sheet a is placed in the pocket-like member 6 of FIGS. 7 and 2 attached to the roof hem (eave) side.
Is wound in the reverse winding direction (reverse direction of the original winding direction) by the winding shaft 4, and the input shaft 1 is locked to one of the locking pieces 3 in the rotation direction of the output side socket portion 20. Then, the coil spring 7 is connected to the hook piece 12 and the input shaft 1
To the direction in which the roof sheet a is wound into the pocket-shaped member 6. In this state, the tension of the roof sheet a and the tension of the coil spring 7, the external force when the roof sheet a receives wind pressure, and the like hardly apply to the universal joint, and the input shaft 1 is locked. Since it is applied to the socket 20 on the output side via the piece 3, the deformation and distortion of the universal joint are prevented, and as a result, the durability of the winding tool is dramatically increased.

Second Embodiment FIG. 4 is a plan view showing a modified form of a locking piece in a winder such as a roof sheet according to the present invention, and FIG. 5 is a sectional view of the locking piece in FIG. As shown in both figures, pins or rods of a predetermined height are fixed upright at predetermined angular intervals to one surface side of a portion close to the outer periphery of a circular substrate 30 made of a metal plate, and these pins or rods are engaged. The stop piece 3 is used. This modification has the advantage that a large number of locking pieces 3 can be provided. In this embodiment, the substrate 30 does not need to be circular. The other configurations, functions and effects of this embodiment are almost the same as those of the first embodiment, and therefore their description is omitted.

Other Embodiments As shown in the first and second embodiments, the locking piece 3 is formed on the outer periphery of the socket 30 on the output side in a flange shape and fixed to the outer periphery of the socket portion 20 on the output side. It is desirable that it is formed in the shift part. However, operatively, the input shaft 1 is located on the outer peripheral portion of the socket portion 20 on the output side at a predetermined distance in the circumferential direction from the outer peripheral portion, and the input shaft 1 intersects at right angles to the axis of the socket portion 20. It is sufficient if a plurality of such members are provided so as to be locked in the rotational direction of the socket portion 20 in such a displaced state. Therefore, as shown in FIG. 6, for example, an L-shaped bent rod 31 or plate is radially fixed at a predetermined angular interval to the outer peripheral portion of the output side socket section 20, and the tip of the rod 31 or the like is fixed. The upright piece can also be implemented as the locking piece 3. Further, the socket portion 2 of each locking piece 3
The distance from 0 may be different from each other, and the distance between the locking pieces 3 does not need to be the same. If the distance between each locking piece 3 and the socket portion 20 is too large, the operation of the winding tool is hindered. On the other hand, if the distance is too small, the lever action is reduced. From this perspective,
The distance between the locking piece 3 and the axis of the socket part 20 is 50 to
It is preferably about 100 mm. Therefore, the first
And the diameter of the substrate 30 in the second embodiment is 100 to
It is preferably about 200 mm.

In each of the above embodiments, the universal joint 2 in which the socket portions 20 and 21 on the input and output sides are connected via the universal joint core 22 is used. This is because the input shaft 1 having a different length according to the height of the roof such as a greenhouse is connected to the input side socket 2.
1 so that the input shaft 1 can be used by being detachably connected thereto, but it can also be implemented by directly connecting the end of the input shaft 1 to the socket 20 on the output side via the universal joint core 22. .

[0025]

According to the first aspect of the present invention, the winder such as a roof sheet or the like is configured such that the winding shaft 1 is at a right angle to the socket 20 on the output side during the winding and rewinding of the roof sheet and the like. In the case where the sheet is maintained in a state of being kept or a state in which the roof sheet or the like is stretched over the entire surface and the roof sheet or the like is rolled into the pocket-shaped member 6 of the roof hem, even if an excessive external force is applied, those external forces Is hardly added to the joint portion, but is added to the socket portion 20 on the output side via the locking piece 3, so that the durability of the winding tool can be drastically increased.

The winder such as a roof sheet according to the second aspect of the present invention includes a socket 20 on the output side and the socket 20.
And the input side socket portion 21 connected to the end of the universal joint 2, the input shaft 1 having a different length can be exchanged and used according to the height of the roof or other conditions. .

In the winder such as a roof sheet according to the third aspect of the present invention, each locking piece 3 is provided upright on the outer peripheral portion of the substrate 30 fixed in a flange shape to the socket 20 on the output side. Therefore, it can be provided at a lower cost in manufacturing.

In the winder such as a roof sheet according to the fourth and fifth aspects of the present invention, each locking piece 3 is formed integrally with the substrate 30 or is a pin or rod fixed to the substrate 30. In addition, the manufacturing cost can be further reduced.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view showing a first embodiment of a winder such as a roof sheet according to the present invention.

FIG. 2 is an enlarged sectional view of a main part of the winding device of FIG.

FIG. 3 is a partial perspective view of the take-up device of FIG. 1 in a state where an input shaft is displaced so as to intersect with an output side socket portion at an angle of substantially 90 degrees.

FIG. 4 is a plan view showing a modified form of a locking piece in a winder such as a roof sheet according to the present invention.

FIG. 5 is a sectional view of the locking piece of FIG. 4;

FIG. 6 is a plan view showing another modification of the locking piece in the winder such as a roof sheet according to the present invention.

FIG. 7 is a partial front view showing an example of a vinyl greenhouse in which a winder such as a roof sheet is used.

FIG. 8 is a partial front view of a conventional winder such as a roof sheet.

[Explanation of symbols]

 a Roof sheet a1 Side sheet 1 Input shaft 10 Handle 10a Collar 10b Push screw 11 Grip 12 Hook piece 13 Stopper 13a Push screw 2 Universal joint 20 Output side socket part 20a Bifurcated part 20b Push screw 21 Input side socket part 21a Bifurcated Part 21b set screw 22 universal joint core 23, 24 shaft pin 3 locking piece 30 board 31 rod 4 output shaft 5 roof bone 50 ridge top member 51 support member 52 joint 6 pocket-like member 60 mounting bracket 7 coil spring

Claims (5)

[Claims] An output-side socket portion to which the winding shaft is connected; and a peripheral portion extending from a state along the axis of the socket portion to a state intersecting at a right angle with the axis. An input shaft 1 that is connected to be tiltable in a direction, a handle 10 fixed to the tip of the input shaft 1 to rotate the input shaft 1, and a rotation to the input shaft 1 near the handle 10. A grip 11 which is freely mounted on the outer periphery of the socket portion 20, and is located at a predetermined distance in a circumferential direction from the outer peripheral portion, and the input shaft 1 is located on the axis of the socket portion 20. A plurality of locking pieces 3 that are locked in the rotation direction of the socket portion 20 in a state of being displaced so as to intersect at a substantially right angle with respect to the roof portion are provided at predetermined angular intervals. Winding device. 2. The output-side socket 20 is connected to an input-side socket 21 connected to an end of the socket 20.
The universal joint 2 is formed by the above and the input shaft 1 is detachably connected to the socket 21 on the input side, and the winder such as a roof sheet according to claim 1, wherein the input shaft 1 is detachably connected to the socket 21 on the input side. 3. The device according to claim 1, wherein each of the locking pieces is provided upright on an outer peripheral portion of a substrate fixed in a flange shape to the socket portion on the output side. Winding equipment such as roof sheets. 4. A winder such as a roof sheet according to claim 3, wherein each of said locking pieces 3 is formed integrally with a substrate 30. 5. The winding device according to claim 3, wherein each of the locking pieces 3 is a pin or a rod fixed to the substrate 30.