JP7644898B2 - Rotating machine for film sheets for ventilation in vinyl greenhouses - Google Patents

Description

This invention belongs to the technical field of rotating machines used for winding up ventilation film sheets that cover a vinyl greenhouse in the longitudinal direction as shown in FIG. 7, and more specifically, relates to a rotating machine for ventilation film sheets in vinyl greenhouses that smoothly winds up and down ventilation film sheets installed in the valleys of connected vinyl greenhouses, ventilation film sheets that cover the sides and gables of vinyl greenhouses, lining fill sheets and nets inside vinyl greenhouses, and film sheets at high altitudes inside and outside vinyl greenhouses.

Conventionally, the applicant has manufactured and implemented a rotating machine as shown in Figures 8 and 9 as a rotating machine for ventilation film sheets. In a casing (not shown), a bevel gear a consisting of a driving bevel gear a1 and a driven bevel gear a2 meshing with the driving bevel gear a1 in an orthogonal arrangement, a rotation transmission device b that drives the bevel gear a, and a support housing c that supports the rotation transmission device b are loaded as main components. The bevel gear a and the support housing c (shaft k) that supports the rotation transmission device b are sandwiched from the left and right by a pair of left and right sheet metal part clamping plates d via spacers e, and a sheet metal part cover body f and a bottom plate g are arranged from above and below. That is, the bevel gear a is covered with the bottom plate g arranged at the lower end and the cover body f arranged at the upper end, and each part is assembled and fixed with a number of bolts h (or screws or rivets), and the bevel gear a is positioned and fixed. In addition, the symbol i in FIG. 9 indicates a bearing plate disposed above the horizontal driving bevel gear a1 of the bevel gear a.

Utility Model Registration No. 3182596

The applicant's conventional product shown in Figures 8 and 9 has problems in that it has a large number of parts and is difficult to assemble. In particular, it requires a large number of bolts h (or screws or rivets) for assembly, and it requires a pair of two pressure plates d to hold it from the left and right, as well as a cover f and a bottom plate g, which are sheet metal parts, from above and below, and the internal structure tends to be complex and large. Therefore, it is an issue to develop a rotating machine with a compact design that has a small number of parts and is easy to assemble.
In addition, since it is necessary to have a structure that suppresses the thrust caused by forces applied to the bevel gear a in the vertical and horizontal directions, there is the inconvenience of needing to add a cover body f as shown in Figures 8 and 9 in order to prevent the driven bevel gear a2 from coming off.

The object of the present invention is therefore to provide a film sheet rotating machine for ventilation in a vinyl greenhouse that has a small number of parts, a compact design, can be assembled efficiently, reduces manufacturing costs, and allows for smooth winding up and down of the film sheet, making it easy to use.

As a means for solving the above problems, the present invention described in claim 1 is a rotating machine for winding up and down a ventilation film sheet S covering a vinyl greenhouse B, comprising:
a) a bevel gear 2, a rotation transmission device 3 for driving the bevel gear 2, and a support body 4 for supporting the rotation transmission device 3 are loaded in a casing A;
b) A winding shaft M attached to an end of the film sheet S can be freely connected to a shaft 22 of a driven bevel gear 21 that meshes with the driving bevel gear 20 of the bevel gear 2 in an orthogonal arrangement, and a groove portion 23 is formed on the outer periphery of the shaft 22 of the driven bevel gear 21 on the connection side of the winding shaft M, and a bearing 5 is disposed on the outer periphery of the groove portion 23;
c) The rotation transmission device 3 is provided with a brake spring and a shaft pin, and is configured so that an output shaft 39 can rotate freely only by the rotation of the input shaft 30, and is supported by a support body 4 with the drive bevel gear 20 connected to the output shaft 39;
d) a fixed body 6 into which a bearing 5 on the outer periphery of the groove portion 23 of the driven bevel gear 21 is fitted from the outside is connected to the support body 4 that supports the rotation transmission device 3, and the bevel gear 2 is positioned and fixed within the casing A;
This is a rotating machine for film sheets used for ventilation in vinyl greenhouses, characterized by the above.

The invention described in claim 2 is a rotating machine for a vinyl greenhouse ventilation film sheet described in claim 1, characterized in that the bearing 5 is composed of a pair of half-split outer bearings 50 and inner bearings 51, or right and left bearings, each of which has a curved inner periphery, and the fixed body 6 formed in an inverted U-shape fits the outer bearing 50 and inner bearing 51 from the outside to fix the bearing 5.

The invention described in claim 3 is a rotating machine for a vinyl greenhouse ventilation film sheet described in claim 2, characterized in that the bearing plate 9 arranged between the pressing plate 8 that fixes the rotation transmission device 3 to the support 4 and the driving bevel gear 20 located at the bottom of the inner bearing 51 of the bearing 5 is positioned and fixed by an inverted U-shaped fixed body 6 that fits the bearing 5, and the inverted U-shaped fixed body 6 is fixed to the cylindrical support 4.

According to the rotating machine for vinyl greenhouse ventilation film sheets according to claims 1 to 3, the main components are loaded into a casing: a bevel gear, a rotation transmission device that drives the bevel gear, and a support that supports the rotation transmission device. An inverted U-shaped fixed body that fits the bearing on the outer periphery of the groove of the driven bevel gear from the outside is connected to the support that supports the rotation transmission device, and the bevel gear is positioned and fixed within the casing. This reduces the number of parts, making assembly more efficient, and reduces costs by making the internal structure more compact.

FIG. 2A is an overall perspective view showing a rotating machine for a ventilation film sheet of a vinyl greenhouse according to the present invention, and FIG. 2B is an exploded perspective view of FIG. 1A is a rear view of the rotating machine shown in FIG. 1A, B is a front view, and C is a side view. A to E show overall views of the rotating machine and universal joint. A is a front view, B is a side view, C is a cross-sectional view of the universal joint portion shown in the cross section of line A-A of B, D is a bottom perspective view showing the state in which the universal joint portion is separated, and E is a top perspective view of D. A to E show a universal joint for a rotating machine of the present invention. A is a cross-sectional view taken along line A-A of B, B is a side view, C is a cross-sectional view taken along line CC of E, D is a cross-sectional view taken along line BB of E, and E is a front view. A to H show the upper portion (the lower end portion of the input shaft) of the universal joint shown in Fig. 4. A is a front view showing the internal structure, B is a bottom view, C is a bottom perspective view, D is a cross-sectional view taken along line C-C of A, E is a cross-sectional view taken along line B-B of A, F is a side view, G is a cross-sectional view taken along line A-A of F, and H is an upper perspective view. FIG. 2 is a perspective view showing a state in which a winding shaft and a handle shaft are attached to the rotating machine of the present invention in use. FIG. 1 is an overall view showing a rotating machine for a ventilation film sheet that covers a vinyl greenhouse in the longitudinal direction. 1A is a perspective view, FIG. 1B is a front view, FIG. 1C is a side view, and FIG. FIG. 9 is an exploded perspective view of the conventional rotating machine shown in FIG. 8 .

The rotating machine for the ventilation film sheet of the vinyl greenhouse of the present invention is suitable for operating a ventilation opening and closing system, for example, by wrapping the longitudinal side and roof surface of the vinyl greenhouse B as shown in FIG. 7 in an unfastened state, winding the lower end (or upper end) of the plastic film sheet S, which is fastened only at the upper end (or lower end), around the reel M, and rotating the reel M forward with the handle shaft H of the rotating machine to smoothly wind up the film sheet S with little force to form a ventilation opening, or conversely, by rotating the reel M in the reverse direction to wind down the film sheet S and close the ventilation opening with the film sheet S. It is also suitable for winding up and winding down the ventilation film sheet S installed in the valley of a connected vinyl greenhouse B (not shown), the ventilation film sheet S covering the side and gable of the vinyl greenhouse B, and further the lining film sheet S and net inside the vinyl greenhouse B, and the film sheet B at high places inside and outside the vinyl greenhouse B.

The basic usage of this rotary machine is such that a bevel gear 2, a rotation transmission device 3 that drives the bevel gear 2, and a support 4 that supports the rotation transmission device 3 are loaded into a casing A as shown in Fig. 6. A winding shaft M attached to an end of a film sheet S that covers a vinyl greenhouse B is connected to the shaft 22 of a driven bevel gear 21 that meshes at right angles with a driving bevel gear 20 that constitutes the bevel gear 2 described below, and the lower end of the input shaft 30 of the rotation transmission device 3 is configured with a centering universal joint T structure, and by rotating a rod-shaped handle shaft H connected to the universal joint T, the winding shaft M rotates, allowing the film sheet S to be smoothly wound up and down (Fig. 8).

Although a detailed diagram of the internal structure of the rotation transmission device 3 is omitted, for example, a coil-shaped brake spring having hook parts bent so as to protrude inwardly at both ends is disposed in a cylindrical brake drum 36 in an inscribed state, and an input shaft 30 and an output shaft 39 are disposed at both ends of an axle pin disposed on the rotation center line, facing each other rotatably around the coaxial pin, and a rotation transmission part and a rotation transmission receiving part protrude from each inner end of the input shaft 30 and the output shaft 39 in a parallel arrangement with the axle pin, and the rotation transmission part of the input shaft 30 abuts on the inner part of the hook part to reduce the diameter of the brake spring, and the rotation transmission receiving part of the output shaft 39 abuts on the outer part of the hook part to expand the diameter of the brake spring. A rotating handle shaft H as shown in Figures 6 and 7 is attached to the input shaft 30 protruding outside the brake drum 36, and a bevel gear 2 (drive bevel gear 20) is connected to the output shaft 39 protruding on the opposite side to the outside of the brake drum 36. In particular, the input shaft 30 and the output shaft 39 are preferably made of stainless steel pipes having through holes. Such stainless steel castings provide strength and flexibility in terms of shape. However, the material is not limited to stainless steel, and aluminum or other materials may be used.
The rotation transmission device 3, which is thus equipped with a brake spring and an axle pin and is configured so that the output shaft 39 can rotate freely only by rotation of the input shaft 30, is supported on a cylindrical support body 4 with the drive bevel gear 20 connected to the output shaft 39, as described below.

The bevel gear 2 of this embodiment will be described.
As shown in Figures 1 to 3, a large driven bevel gear 21 is meshed with a small horizontally disposed driving bevel gear 20 constituting the bevel gear 2 in an orthogonal arrangement, and the winding shaft M attached to the end of the film sheet S is freely connectable to the shaft 22 on the winding shaft M side of the driven bevel gear 21. The shaft 22 is formed with a through shaft hole 24, and the winding shaft M is freely connectable to the shaft hole 24 from either the front side or the rear side. In this embodiment, as shown in the upper right of Figure 6, the winding shaft M is connected to the shaft hole 24 on the rear side. In addition, a groove 23 is formed in the circumferential direction on the outer periphery of the shaft 22 of the driven bevel gear 21 on the side connected to the winding shaft M, and a bearing 5 is disposed on the outer periphery of the groove 23.

1B, the bearing 5 is composed of a pair of halved outer bearing 50 and inner bearing 51, each of which has a curved inner periphery. However, the bearing 5 may also be composed of a pair of right and left bearings (not shown). An inverted U-shaped fixing body 6 with bolt holes fits the outer bearing 50 and inner bearing 51 from the outside to fix the bearing 5.
That is, a bolt hole press plate 8 for fixing the rotation transmission device 3 to the support 4 and a bolt hole bearing plate 9 arranged between the drive bevel gear 20 located below the inner bearing 51 of the bearing 5 of the above-mentioned configuration are fixed with bolts 1 by an inverted U-shaped fixed body 6 that fits into the bearing 5 from the outside, and the inverted U-shaped fixed body 6 is fixed with bolts 1 to a bolt hole bulge 40 provided on the upper outer periphery of the cylindrical support 4 that supports the rotation transmission device 3, thus assembling the bevel gear 2 by clamping it from above and below within the casing A and positioning and fixing it (FIG. 1A).
With the output shaft 39 of the rotation transmission device 3 inserted through a through hole 80 drilled in the center of the pressing plate 8, the pressing plate 8 presses the brake drum 36 of the rotation transmission device 3 from above and is fixed to the support body 4. Also, the output shaft 39 of the rotation transmission device 3 is inserted through a through hole 90 drilled in the center of the bearing plate 9, and its tip is journalled on the underside of the inner bearing 51 (FIG. 1B).

Next, the universal joint T of the input shaft 30 of the rotation transmission device 3 will be described.
As shown in Figures 4 and 5, the lower end of the rotation transmission device 3 constituting the universal joint T on the input shaft 30 side is curved into a convex hemispherical shape (Figure 5), and the upper end of the coupling 7 that receives the convex hemispherical lower end 31 on the input shaft 30 side is curved into a concave hemispherical shape, and the convex hemispherical lower end 31 on the input shaft 30 side is fitted into the concave hemispherical upper end 70 of the coupling 7 (Figure 4).

Specifically, as shown in FIG. 4D, the outer circumference of the convex hemispherical lower end 31 on the input shaft 30 side of the rotation transmission device 3 described above is formed slightly smaller than the inner circumference of the concave hemispherical upper end 70 of the coupling 7 to reduce the dimensional difference of the mating hemispherical shape, and is implemented in a form in which the center is aligned and does not swing or become misaligned even if an angle is formed. The pin hole 32 formed laterally in the convex hemispherical lower end 31 on the input shaft 30 side and the pin hole 71 formed in the concave hemispherical upper end 70 of the coupling 7 are connected by a pin P that is inserted at a common position so that the center point of the insertion pin P is the same.

The pin hole 32 in the convex hemispherical lower end 31 on the input shaft 3 side is formed as a gradually diverging hole from the circular center 33 to the left and right vertically elongated openings 34 formed as vertical ovals, as shown in FIG. 5 (FIGS. 4A and 4C). Therefore, the insertion pin P is configured to move only vertically within the range of the left and right diverging holes (32) with the circular center 33 as the center point, like a seesaw. If the opening 34 were formed as a 360° circle, the rattle would increase and the movement would become sluggish, but by forming the opening 34 as a vertical oval as in this embodiment, smooth rotational movement is achieved.

Although the above describes the embodiments based on the drawings, we would like to emphasize that the present invention is not limited to the illustrated examples, and includes the range of design modifications and application variations that would normally be made by a person skilled in the art, provided that they do not deviate from the technical concept.

B: vinyl house S: film sheet M: winding shaft H: handle shaft P: pin T: universal joint A: casing 1: bolt 2: bevel gear 20: driving bevel gear 21: driven bevel gear 22: shaft 23: groove 24: shaft hole 3: rotation transmission device 30: input shaft 31: convex hemispherical lower end 32: pin hole (flared hole)
33 Circular central portion 34 Longitudinally elongated opening 39 Output shaft 4 Support 5 Bearing 50 Outer bearing 51 Inner bearing 6 Inverted U-shaped fixed body 7 Coupling 70 Concave hemispherical upper end 71 Pin hole 8 Pressing plate 9 Bearing plate

Claims (3)

A rotating machine used for winding up and down a ventilation film sheet that covers a vinyl greenhouse.
a) a bevel gear, a rotation transmission device that drives the bevel gear, and a support that supports the rotation transmission device are loaded in a casing;
b) a winding shaft attached to an end of the film sheet can be freely connected to the shaft of a driven bevel gear that meshes with the driving bevel gear in an orthogonal arrangement, and a groove is formed on the outer periphery of the driven bevel gear shaft on the winding shaft connection side, and a bearing is disposed on the outer periphery of the groove;
c) the rotation transmission device is provided with a brake spring and a shaft pin, and an output shaft is configured to be rotatable only by the rotation of the input shaft, and the output shaft is supported by a support body in a state in which the drive bevel gear is connected to the output shaft;
d) a fixed body that fits a bearing on the outer periphery of the groove portion of the driven bevel gear from the outside is connected to the support body that supports the rotation transmission device, and the bevel gear is positioned and fixed within the casing;
A film sheet rotating machine for ventilation in vinyl greenhouses, characterized by the above. The rotating machine for vinyl greenhouse ventilation film sheets described in claim 1 is characterized in that the bearings are composed of a pair of half-split outer and inner bearings, or right and left bearings, each of which has a curved inner periphery, and the bearings are fixed by fitting the outer and inner bearings from the outside to a fixed body formed in an inverted U-shape. The rotating machine for a vinyl greenhouse ventilation film sheet described in claim 2 is characterized in that a bearing plate disposed between a pressing plate that fixes the rotation transmission device to a support and a driving bevel gear located at the lower part of the inner bearing of the bearing is positioned and fixed by an inverted U-shaped fixed body that fits the bearing, and the inverted U-shaped fixed body is fixed to the cylindrical support body.

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