JP3141430U - Sheet take-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ease a handle operation by reducing a rotation burden of an input shaft.
When a relay pipe is connected to a gear box arranged at a winding shaft end of a sheet and a handle connected to the relay pipe is operated, a driving and driven bevel gear in the gear box is operated to operate the winding shaft. In the rotating sheet take-up device, a ball bearing is provided in each of the rotation support portions of the driving bevel gear and the driven bevel gear, and a brake mechanism is provided in a boss provided on the output shaft side.
[Selection] Figure 2

Description

  The present invention relates to a sheet winding device for a greenhouse.

The ceiling sheet of the greenhouse is wound and unwound by rotation of the winding shaft, and this winding shaft is rotated by operating a gear device provided on the house side of the house. A long pipe is connected to the gear device, and the bevel gears are driven by manually operating a handle connected to the lower end of the pipe (see, for example, Patent Document 1).
Utility Model Registration No. 3131510

  The technique described in Patent Document 1 aims to reduce the slide load on the bevel gear so that the winding / rewinding operation can be performed easily. A ball bearing is attached to the fixture of the driven gear. The main component is that it is attached. It is expected that the handle operation will be easier compared to the previous device by interposing the bearing, but a brake is provided on the input shaft side so that the take-up shaft does not reverse. Is taken for granted. And since this brake exists, the handle on the input shaft side is rotated 3 to 4 times and the output shaft is gradually turned once, and the fact that the turning operation of the handle becomes heavy cannot be wiped out. The current situation.

  The present invention has been made in view of such a conventional situation, and a spring member serving as a brake is provided on the output shaft side and a bearing is efficiently arranged to reduce the rotation burden of the input shaft, and handle operation is possible. This proposal is intended to improve work efficiency by making it as easy as possible.

  For this purpose, the present invention connects the relay pipe to the gear box arranged at the end of the winding shaft of the seat and operates the handle connected to the relay pipe to operate the driving and driven bevel gears in the gear box. In a sheet winding device that rotates a shaft, a boss provided on the output shaft side by providing a ball bearing on each rotation support portion of the drive bevel gear positioned on the input shaft side and the driven bevel gear positioned on the output shaft side The main purpose is to equip the inside with a brake mechanism.

  The brake mechanism is constituted by a casing, an operating shaft, a spring member, and an output shaft.

  In the present invention, since the conventional method in which the brake is provided on the input shaft side is not adopted, the load on the brake on the input shaft is eliminated, so that the handle operation connected to the relay pipe can be easily performed, and the seat The effort and time waste required for the take-up / rewinding operation can be reduced, and anyone can operate easily.

  By providing ball bearings on the input and output rotation support sections, the rotation of the shaft becomes smoother, and in combination with the provision of the brake mechanism on the output shaft side, rotation transmission becomes even easier, and the sheet is wound and unwound. Work can be greatly improved compared to the conventional method.

  The brake mechanism does not require a new member, and the ball bearing can be easily mounted using a commercially available one, so that the product can be provided at a low cost without incurring a large cost, and the winding shaft can be rotated. By smoothing, the sheet can be wound and rewound without any trouble without causing an excessive load, and the durability of the sheet and the entire winding apparatus can be maintained.

  Referring to the drawings, the present invention will be described. Reference numeral 10 in FIG. 1 denotes a gear box. An input shaft 11 protrudes from a lower portion, a long relay pipe 12 is connected to the input shaft 11, and a handle 13 is connected to the relay pipe 12. A take-up shaft 15 connected to the output shaft 14 is attached in the horizontal direction of the gear box 10, and the take-up shaft 15 rotates and the sheet 16 is taken up / rewinded by turning the handle 13. In terms of point appearance, it is not much different from conventionally known devices.

  FIG. 2 is an explanatory view in which the gear box 10 is shown in cross section. That is, a small drive bevel gear 17 is attached to the lower portion of the gear box 10 in the vertical direction. When the input shaft 11 is inserted into the drive bevel gear 17 and the relay pipe 12 is rotated by turning the handle 13, the drive bevel gear 17 is horizontally rotated in conjunction with the input shaft 11.

  The drive bevel gear 17 has a small rotation support portion 18a also serving as a bearing directly above and below, and a large rotation support portion 18b. A ball bearing B is disposed in each of the rotation support portions 18a and 18b. And the function of smoothing the rotation of the gear shaft 19.

  A large driven bevel gear 20 is engaged with the drive bevel gear 17. The output shaft 14 is located on the coaxial line soil at the portion facing the driven bevel gear 20. When the driven bevel gear 20 rotates in the vertical direction as the drive bevel gear 17 rotates, the output shaft 14 also rotates in conjunction with it. .

  An operating shaft 21 is inserted into the driven bevel gear 20 and interlocked with the rotation of the driven bevel gear 20. A ball bearing B ′ is disposed at the end of the operating shaft 21 and the rotation support portions 22, 23 of the output shaft 14, and has a function of smoothing the rotation of the operating shaft 21 and the output shaft 14. A brake mechanism 25 is provided in a boss 24 located in front of the driven bevel gear 20.

  As shown in FIG. 3, the brake mechanism 25 includes a casing 26 that is in close contact with the inside of the boss 24, the operating shaft 21, a helical spring member 27, and the output shaft 14, and prevents reverse rotation of the output shaft 14. It has a function. In other words, the operating shaft 21 rotates with the driven bevel gear 20, but the spring member 27 is wound around in conjunction with the operating shaft 21 to reduce the diameter and rotate within the casing 26.

  As shown in the figure, the operating shaft 21 has an inner end portion 21a provided with an operating-side intervention piece 21b projecting along the outer peripheral surface thereof with a predetermined width, and the operating-side intervention piece 21 also on the inner end portion 14a of the output shaft 14. An output-side intervention piece 14b having a predetermined width protrudes in a manner facing 21b. When the operation shaft 21 and the output shaft 14 are arranged coaxially, the operation side intervention piece 21b and the output side intervention piece 14b are arranged on the same circumference, and the inner end portion 21a of the operation shaft 21 and the inner end of the output shaft 14 are arranged. When the portion 14a is disposed, the distal end of the operating intervention piece 21b comes into contact with the inner end portion 14a on the output side, and the distal end of the output intervention piece 14b comes into contact with the inner end portion 21a on the input side. Thus, the operating shaft 21 and the output shaft 14 are incorporated in the casing 26.

  Then, the intervention piece 21b of the operating shaft 21 faces between the inner surfaces of the flange portions 27a and 27b formed by bending both ends of the spring member 27 inward, and outputs between the outer surfaces of the flange portions 27a and 27b. In this configuration, the intervention piece 14b of the shaft 14 faces.

  When the operating shaft 14 is now rotated, any one of the side end surfaces of the intervention piece 14b comes into contact with either inner surface of the flanges 27a and 27b, so that the spring member 27 is tightened, and the spring member 27 is reduced in diameter and the casing 26 Rotate within. When the spring member 27 rotates, the flange portions 27a and 27b abut on the side end face of the output side intervention piece 14b and the output shaft 14 rotates in the same direction as the operating shaft 14, so that the winding shaft 15 interlocked with the output shaft also rotates. Then, the sheet 16 is wound and rewound.

  Thus, when a rotational force is still applied to the output shaft 14 when the seat 16 is stopped at a predetermined position, any one of the side end surfaces of the output side intervention piece 14b is either of the flanges 27a and 27b of the spring member 27. Press against the outer surface. For this reason, the spring member 27 is rewound and expanded in diameter, and its outer surface presses against the inner surface of the casing 26, so that the rotation of the output shaft 14 is prevented and the rotational force applied to the output shaft 14 is not transmitted to the operating shaft 21. That's okay.

  The present invention is configured as described above. When the seat 16 at a high place is opened and closed by turning the handle 13 at hand, a conventional brake mechanism is provided on the input shaft side provided vertically. There is no need to provide this, and the rotation of the drive bevel gear 17 is also lightened, so that the handle operation is extremely easy, and the sheet 16 can be wound and rewound without delay.

  The present invention is mainly intended to provide the brake mechanism 25 on the output shaft 14 side that is coaxial with the driven bevel gear 20, and the brake mechanism 25 itself can adopt a well-known method. No special new configuration is required. Accordingly, the present invention is not limited to the illustrated example, and it is a matter of course that other configuration changes are within the scope of the free implementation of the present invention within the scope of achieving the object effect of the present invention.

1 is an external view of the present invention. It is a schematic sectional drawing of a gear box. An example of a brake mechanism is shown, (a) is sectional drawing, (b) is an exploded view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Gear box 11 Input shaft 12 Relay pipe 14 Output shaft 15 Winding shaft 16 Sheet | seat 17 Driven bevel gear 18a Rotation support part 18b Rotation support part B Ball bearing B 'Ball bearing 20 Driven bevel gear 21 Actuation shaft 22 Rotation support part 23 Rotation Support portion 24 Boss 25 Brake mechanism 26 Casing 27 Spring member

Claims (2)

  A relay pipe is connected to a gear box arranged at the end of the take-up shaft of the sheet, and when the handle connected to the relay pipe is operated, the drive and driven bevel gears in the gear box are operated to rotate the take-up shaft In the winding device, ball bearings are provided on the rotation support parts of the drive and cogwheel gears located on the input shaft side and the output shaft side, and a brake mechanism is provided in the boss provided on the output shaft side. A sheet take-up device.   The sheet winding apparatus according to claim 1, wherein the brake mechanism is constituted by a casing, an operating shaft, a spring member, and an output shaft.

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