JP3178312U - Greenhouse sheet winder - Google Patents

Abstract

An object of the present invention is to provide a sheet winder for a greenhouse which is easy to wind and unwind a sheet without requiring skill by improving the operability of the handle and is suitable for low-cost mass production.
An input shaft 6 protrudes from one side of left and right frames 5 and 5 having a transmission unit 40 with a built-in brake, an output shaft 7 projects from the other, one end of a handle 2 is attached to the input shaft, and a seat is attached to the output shaft. 3 winding pipe 4 is attached. A rotating roller 8 that rolls in contact with the guide column 1 is supported in the frame 5, and a drive-side first gear group 10 including a main gear and a sub-gear is provided on the input shaft 6 side frame, A frame 30 containing a transmission gear device A composed of a second gear group 20 on the driven side composed of a slave gear is fixed.
[Selection] Figure 1

Description

  The present invention relates to a greenhouse sheet winding device with good operability.

  The greenhouse for plant cultivation is covered with a vinyl sheet on the ceiling, side surface, and wife surface, and the sheet can be freely opened and closed so as to be shielded from light, air circulation, temperature adjustment, and the like. As a general one, there is known one in which a winding device is attached to a column fixed near the outside of a greenhouse so as to be movable in the vertical direction. This winding device is a mechanism in which when a handle is operated, a winding shaft on which the sheet is wound rotates forward and backward to wind up and rewind the sheet, thereby opening and closing a required part of the greenhouse. The method has been followed from the old to the present, but when turning the handle by hand, it does not necessarily operate smoothly depending on the size and height of the greenhouse, requiring skill in operation, opening and closing of the seat There are a number of problems that are not as easy as expected.

  For the purpose of solving such problems, for example, Patent Document 1 discloses a guide member for a vinyl sheet opening / closing device of a greenhouse, and Patent Document 2 discloses a winder sheet winding device.

Utility Model Registration No. 2565578 JP 2002-101767 A

  The guide member for a vinyl sheet opening / closing device of a greenhouse shown in Patent Document 1 is characterized in that one of two guide rollers is constituted by a substantially abacus ball-shaped roller member instead of a conventional cylindrical guide roller, As a result, even if a lateral twist occurs due to a delay in winding of the vinyl sheet, it is possible to prevent the guide pipe from being bitten. Although it is recognized that the abacus-shaped roller member rolls lightly when it comes into contact with the guide pipe, it is recognized that it is effective in preventing biting, but it is heavy when operating the handle for winding a sheet in a large greenhouse. Although it is necessary to consider the fact that a load is applied, it is difficult to say that Document 1 has a function of this point.

  The winding device shown in Patent Document 2 reduces the operating force required at the time of the winding operation. For this purpose, the handle is provided so that it can be extended and retracted, and by rotating the handle while the handle is extended, Although it is characterized by a large turning radius, according to this technology, the speed at which the sheet is rolled up and the speed at which the sheet is rewound are set to be the same, so the time required for rewinding becomes long, and Depending on the length of the arm of the handle, there is a problem that it is easy to touch the operator's body and is difficult to operate.

  The present invention has been made in view of the above-described prior art, and requires skill because it can be easily wound up and rewound without burdening the operator regardless of the size of the greenhouse. Therefore, an object of the present invention is to provide a winding device that can open and close a sheet without being damaged, and is excellent in durability even when an inexpensive material is used.

  That is, the present invention has an input shaft on one side of the left and right frames provided with a transmission part with a built-in brake in the center, and an output shaft on the other side. One end of the handle is attached to the input shaft and a seat winding pipe is mounted on the output shaft. A rotary roller that rolls in contact with guide pillars erected outside the greenhouse is pivotally supported on the upper and lower portions of the frame, and the drive side consisting of a main gear and a subordinate gear is supported on the frame on the input shaft side. The first gear group and a frame including a transmission gear device including a driven second gear group including a main gear and a slave gear are fixed, and both the first gear group and the second gear group are small gears. It is a combination of large gears, the arrangement of which is inconsistent in the first gear group and the second gear group, and the slave gears of the first and second gear groups are rotationally supported on the frame, Rotate the input shaft by operating the handle With the second group of gears with the first gear group is driven is shifting operation, transmission unit winding pipe through is characterized by returning the sheet winding surrounds with forward and reverse rotation.

  When the handle is operated, the input shaft is rotated, and the speed change function by the respective gears in the frame works to reduce the load of rotation transmission to the transmission portion, and the winding pipe rotates smoothly. Therefore, even a large greenhouse sheet can be operated without requiring a heavy burden on the operator, and it can be operated without skill, and since the operation of the gear is not wasteful, the device is robust and can maintain sufficient strength. It is possible and can suppress the occurrence of failure, so it is satisfactory if it is an expensive material, for example, sintered metal, but it is suitable for low-cost mass production because it can achieve the intended purpose even if zinc die casting is used due to cost To do.

It is the schematic of the whole this invention. It is a partial top view of this invention. The transmission gear device is shown, (a) is a side view, (b) is an explanatory view seen from the front. The transmission part is shown, (a) is a cross section of the casing, (b) is an exploded view.

  Referring to the drawings, the present invention will be described. FIG. 1 shows an outline of the whole, FIG. 2 shows a part thereof, and 1 is a guide post erected in the vicinity of a wife surface of a greenhouse (not shown). The entire winding device moves up and down along the support column 1, and the sheet 3 is wound and rewound by the rotation of the winding pipe 4 by operating the crank-shaped handle 2. This operation itself is well known in the art. There is no big difference from the method.

  The winding device has an input shaft 6 projecting from one side (right side in the figure) of the left and right frames 5 and 5 having a transmission section 40 in the center, and an output shaft 7 projecting from the other (left side in the figure). A take-up pipe 4 for winding 3 is attached. A rotating roller 8 in contact with the support column 1 is pivotally supported in the left and right frames 5 and 5 so that the whole moves smoothly up and down along the guide support column 1. As shown in the figure, the rotating rollers 8 are arranged on the top and bottom of the frames 5 and 5 as two pairs of approximately the same shape with abacus balls facing each other. Rolls lightly when the winder moves up and down.

  The frame 5 on the input shaft 6 side is surrounded by a frame 30 having a U-shape in plan view, and a transmission gear device A composed of a first gear group 10 on the driving side and a second gear group 20 on the driven side. In FIG. 4, the bent portion 31 at the end is fixed to the frame 5 with a screw 32.

  3A and 3B are explanatory views of the transmission gear device A, where FIG. 3A is a schematic side view, and FIG. 3B is a schematic view viewed from the front. The first gear group 10 includes a small gear 11 that is a main gear at the center position that is linked to the input shaft 6 and a large gear 12 that is a slave gear that meshes with the small gear. The large gear 21 is located at the center position of the first gear group 10 in combination. Incidentally, if the number of teeth of the small gear 11 is 16, the number of teeth of the large gear is 22 (the gear ratio of the first gear group is 1.375), and the number of teeth is meshed with the small gear 22 of the second gear group 20 and the number of teeth. However, it is not necessarily limited by the number of teeth. The slave gears of the first gear group 10 and the second gear group 20 are coaxial with each other, and each is rotatably supported by a screw 23 on the frame 5, so that the slave gear together with the small gear 11 of the first gear group 10 is used. When a certain large gear 12 rotates, the small gear 22 of the second gear group 20 also rotates, and the large gear 21 at the center position of the second gear group 20 that meshes with this rotates at a variable speed. The resulting movement rotates the output shaft 7 via the transmission unit 40.

  Thus, the transmission unit 40 is present in order to exert the braking function by applying the rotational torque from the input shaft 6 to the output shaft 7 side. However, in the practice of the present invention, a conventional transmission switching mechanism, for example, FIG. The structure shown in FIG. That is, a cylindrical casing 42 is provided on the inner surface of the shell 41 in the transmission portion 40, the operating shaft 43 and the output shaft 7 on the input side inside the casing 42, and a spiral spring member 44 straddling the operating shaft 43 and the output shaft 7. Is provided. The spring member 44 is wound around the operating shaft 43, which is rotationally transmitted from the input shaft 6 through the transmission gear device A, to reduce the diameter and rotate in the casing 42.

  The operating shaft 43 is provided with an operating intervention piece 43 ′ projecting at a predetermined width along its outer peripheral surface at the inner end portion, and the inner end portion of the output shaft 7 also has a predetermined shape so as to face the operating intervention piece 43 ′. The output intervention piece 7 'of the width protrudes. When the operation shaft 43 and the output shaft 7 are arranged coaxially, the operation intervention piece 43 ′ and the output intervention piece 7 are arranged on the same circumference, and the inner end portion of the operation shaft 43 and the inner end portion of the output shaft 7 are paired. When installed, the operating shaft 43 and the output shaft are arranged such that the tip of the operating intervention piece 43 ′ comes into contact with the inner end of the output side and the tip of the output intervention piece contacts the inner end of the input side. 7 is incorporated into the casing 42.

  Then, the operation intervention piece 43 ′ of the operating shaft 43 faces between the inner side surfaces of the flange portion 44 ′ formed by bending both ends of the spring member 44 inward, and an output shaft is provided between the outer side surfaces of the flange portion 44 ′. 7 so that when the operating shaft 43 rotates, the side end surface of the intervention piece 43 'abuts against the inner surface of the flange portion 44' so that the spring member 44 is wound and tightened as described above. The spring member 44 is reduced in diameter and rotates in the casing 42. When the spring member 44 rotates, the flange portion 44 ′ contacts the side end surface of the output intervention piece 7 ′ and the output shaft 7 rotates in the same direction as the operating shaft 43, so that the winding pipe 4 rotates in conjunction with the output shaft 7. Then, the sheet 3 is wound and rewound.

  When a rotational force is still applied to the operating shaft 43 when the seat 3 is set at a predetermined position, one of the side end surfaces of the operating intervention piece 43 ′ is on one outer surface of the flange portion of the spring member 44. Abut and press. For this reason, the spring member 44 is rewound and expanded in diameter, and the brake function that the outer surface presses the inner surface of the casing 42 is exhibited, the rotation of the operating shaft 43 is prevented, and the rotational force is not transmitted to the output shaft 7. The winding pipe 4 is stationary at the stop position.

  Since the proposed winding device is characterized in that the transmission gear device A is attached to the frame 5, a plurality of gears are used. However, since the configuration is not complicated, it is simple in assembly and production. It is suitable for mass production. Further, when the rotary roller 8 is configured as shown in the figure, it moves effectively, but the shape of the rotary roller, the frame 30, the transmission gear device A, the brake means in the transmission 40, etc. are examples, and the frame 30 Those modifications within the scope of the effects of the present invention, such as attaching a cover, also belong to the scope of implementation of the present invention.

DESCRIPTION OF SYMBOLS 1 Guide support | pillar 2 Handle 3 Seat 4 Winding pipe 5 Frame 6 Input shaft 7 Output shaft 8 Rotating roller 10 1st gear group 20 2nd gear group A Transmission gear apparatus 30 Frame 40 Transmission part

Claims (1)

  An input shaft on one side of the left and right frames with a transmission unit with a built-in brake in the center, and an output shaft on the other side, and one end of a handle attached to the input shaft and a seat take-up pipe to the output shaft, A rotating roller that rolls in contact with guide pillars erected outside the greenhouse is pivotally supported at the upper and lower portions of the inside, and a first gear group on the driving side composed of a main gear and a subordinate gear is supported on the input shaft side frame. And a frame containing a transmission gear device composed of a second gear group on the driven side composed of a main gear and a sub-gear, and a small gear and a large gear engaged with each other in both the first gear group and the second gear group. The arrangement is a combination of the first gear group and the second gear group, and the slave gears of the first gear group and the second gear group are rotatably supported by the frame. As the input shaft rotates, the first gear group The second group of gears is gear operated to drive, greenhouse sheet winding apparatus characterized by unwinding surrounds the sheet winding pipe by forward and reverse rotation via a transmission unit.

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