JPH1113227A - Opening-closing device for roof light window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof light window opening-closing device which is light and can smoothly open and close a roof light window without play. SOLUTION: In this roof light window opening-closing device, a rack 10 which engages with a pinion gear rotated by a driving shaft 3 to carry out a reciprocating linear motion guided by a case 5 is pivotally attached to one open-closable end of the roof light window pivotally attached to a structure at the other end. In this case, the rack 10 is provided with a high strength hollow girder 10b, and the lower edge of the rack is supported by a roller 12 pivotally attached on a vertical line at the center of the driving shaft. In addition, the rack 10 is provided with a high strength hollow girder part 10b, and the lower edge of the rack 10 is supported by a roller 12 pivotally attached on a vertical line at the center of the driving shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skylight opening / closing device for mainly opening / closing a skylight for a greenhouse.

[0002]

2. Description of the Related Art Conventionally, a rack is pivotally connected to the other end of a skylight whose one end is pivotally connected to a structure to open and close, and meshes with a pinion gear rotated by a drive shaft to open and close the skylight by the reciprocating linear motion. Various skylight opening and closing devices are known. In these skylight opening and closing devices, since the rack is generally formed of a single steel plate, it is difficult to reduce the weight in terms of strength, it is inevitably heavy, and the load on the motor that rotates the drive shaft increases. In addition to the problem, a large gap is required between the rack and the rack guide surface of the case to reduce frictional resistance, and this gap causes the rack to rattle during operation and not move smoothly. there were. In addition, since the lower edge of the rack is received by the two rollers, a rotational force is applied to the rack in the early stage of driving when the rack is operated, causing the rollers to collide with the rack and cause a failure. There have been many problems, such as a dent at the edge due to collision with the roller, which hinders smooth movement of the rack.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a skylight opening / closing device which is lightweight, has no play, and can smoothly open / close the skylight.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a rack, which engages with a pinion gear rotated by a drive shaft and performs a reciprocating linear motion guided by a case, has one end pivotally connected to a structure. A skylight opening and closing device pivotally connected to the other end of the skylight that is opened and closed by providing a hollow high-strength girder portion in a rack guided by a case, wherein the skylight opening and closing device is rotated by a drive shaft. A rack that engages with the pinion gear to be moved and performs a reciprocating linear motion guided by the case is guided by the case in a skylight opening / closing device that is pivotally connected to the other end that opens and closes the skylight that has one end pivotally connected to the structure. A skylight opening / closing device in which the lower edge of the rack is supported by a roller pivotally mounted on a vertical line about the center of the drive shaft according to the second aspect of the invention, is engaged with a pinion gear rotated by the drive shaft and guided by a case. In a skylight opening and closing device in which a rack performing a reciprocating linear motion is pivotally connected to the other end of the skylight having one end pivotally connected to the structure, a hollow high-strength girder portion is provided in the rack guided by the case, A skylight opening / closing device in which the lower edge of the rack is supported by a roller pivotally mounted on a vertical line about the center of the drive shaft is the invention according to claim 3, and in the invention according to claim 1 or 2 or 3, which contacts both side surfaces of the rack. A skylight opening / closing device in which a ridge for reducing the area is formed is the invention according to claim 4, wherein the skylight in which the low friction member is attached to the rack guide surface of the case in the invention according to claim 1, 2, 3 or 4. The opening and closing device is the invention of claim 5.

Next, a preferred embodiment of the present invention used for a skylight of a greenhouse will be described in detail with reference to the drawings. 1 is a greenhouse, 2 is a skylight whose one end is pivotally attached to the roof of the greenhouse 1 and the other end is opened and closed, and many skylights 2 are attached to the greenhouse 1. Reference numeral 3 denotes a drive shaft which is stretched below the skylight 2 over substantially the entire length of the greenhouse 1, and the same number of pinion gears 4 as the skylight 2 are arranged and fixed on the drive shaft 3 corresponding to the position of the skylight 2. The pinion gear 4 is formed by aluminum die-casting. The shape of the pinion gear 4 is such that a gear 4c sandwiched between flanges 4b on both sides is formed on one outer peripheral surface of a cylindrical body 4a having an inner diameter through which the drive shaft 3 can be inserted. It was done. The pinion gear 4 is pivotally supported by an opening 5a of a case 5 with a flange 4b. 5b is case 5
Bearing ring provided between the opening 5a and the flange 4b. Further, a screw hole 7 for screwing a stop screw for fixing the drive shaft 3 is formed on the other side of the cylindrical body 4 a projecting from the case 5. The case 5 is formed by integrating front and rear plates with openings formed by aluminum die-casting with bolts 8 and 9 overlapped while leaving a pinion gear storage space.

Reference numeral 10 denotes a rack which engages with the gear 4c of the pinion gear 4 and reciprocates linearly. The rack 10 has one end pivotally connected to the other end of the skylight 2 for opening and closing. The rack 10 is formed by aluminum die-casting and has a hollow high-strength girder 1 except for the rack teeth 10a.
0b. The hollow high-strength girder portion 10b is about twice as wide as the rack teeth 10a. And
The rack 10 made of aluminum die-cast and the rack guide surface of the case 5 are slid closely. The upper and lower ridges 11 are formed on both sides of the hollow high-strength girder portion 10b to reduce the contact area between the closely packed rack 10 and the case 5 to reduce frictional resistance. And Reference numeral 12 denotes a roller made of a bearing pivotally mounted on the lower portion of the case 5 by the bolt 9. The roller 12 is pivotally mounted on a vertical line at the center of the drive shaft 3, and holds the rack 10 so as to slide smoothly. ing. Reference numeral 13 denotes a low-friction member attached to both rack guide surfaces of the case 5, and a sheet of polytetrafluoroethylene is adhered as the low-friction member 13.

In such a construction, a number of skylights 2 are pivotally connected at one end to the ridge of the roof of the greenhouse 1, and a drive shaft 3 extending the entire length of the greenhouse 1 is stretched below the skylights 2. ing. The drive shaft 3 is driven to rotate by a drive mechanism (not shown). A pinion gear 4 is screwed to the drive shaft 3 at a position corresponding to each of the skylights 2, and the pinion gear 4 rotates together with the drive shaft 3. The gear 4c of the pinion gear 4 meshes with the rack teeth 10a of a rack 10 whose lower edge is supported by a roller 12 pivotally attached to the lower portion of the case 5, so that when the top window 2 is opened and closed, a drive (not shown) is used. When the mechanism is operated, the drive shaft 3 rotates in either the forward or reverse direction.
The pinion gear 4 screwed to the shaft also rotates forward or backward. With the rotation of the pinion gear 4,
The rack 10 mounted on the case 5 by engaging the gear 4c of the pinion gear 4 with the rack teeth 10a performs a reciprocating linear motion along the rack guide surface of the case 5, but one end of the rack 10 is Since the pinion gear 4 is fixed to the drive shaft 3, the top window 2 is opened and closed by the reciprocating linear motion of the rack 10. During this opening and closing operation, the ridges 11 of the hollow high-strength girder portion 10b of the rack 10 are
When starting up, the rack 1
The skylight 2 can be opened and closed without the rattling of zero and the movement of the rack 10 does not become heavy due to frictional resistance. Moreover, since the aluminum case 5 and the rack 10 do not directly contact each other but come into contact with each other via the low-friction member 13, wear of the aluminum case 5 is accurately prevented, and long-term durability can be achieved. .

Further, the rack 10 is a hollow high-strength girder 1
0b, the rack 10 is lightweight, the load on the drive mechanism is small, the rack 10 operates without delay with the rotation of the pinion gear 4, and the skylight 2 can be opened and closed with good responsiveness. Become. The roller 12
Is pivotally mounted on a vertical line about the center of the drive shaft 3, and when a rotational force is applied to the rack 10 by the pinion gear 4 due to the gap formed between the roller 12 and the rack 10 in the initial operation of the rack 10, Swings slightly about the roller 12 and absorbs its rotational force. Further, by manufacturing the case 5, the pinion gear 4, the rack 10 and the like by aluminum die-casting, the manufacturing accuracy is improved and the rack guide surface of the case 5 can be brought into close contact with the rack 10, so that the rattling of the rack is reduced. Smooth operation is possible.

In a preferred embodiment, the rack 1
Although the 0 and the case 5 are made of aluminum, other metals or engineering plastics may of course be used as long as they are lightweight, high in strength and high in manufacturing accuracy. In a preferred embodiment, the rollers 12
Is used to prevent collision between the roller 12 and the rack 10. However, the rack 10 is lightweight, has a small collision force with the roller 12, and has a dent formed on the rack 10 by sticking a cushioning material or the like. Needless to say, a plurality of rollers 12 may be provided as long as they hardly occur.

[0010]

According to the present invention, as is apparent from the above description, since the hollow high-strength girder portion is formed in the rack, the rack is lightweight and high-strength. Can work well. In addition, the rack is supported by rollers pivotally mounted on the vertical line at the center of the drive shaft, so that the rotational motion of the rack generated during the initial operation of the rack is absorbed by swinging the rack. It is possible to prevent the impact and vibration caused by the collision of the rack with the rollers and the occurrence of dents on the rack, so that the durability of the device will not be reduced and the rack will operate smoothly for a long period of time. It is possible to do. Furthermore, by combining the configurations of the first and second aspects as in the third aspect, it is possible to achieve both responsiveness and durability. Also,
By forming ridges for reducing the contact area in accordance with both rules of the rack, frictional resistance can be reduced, and wear of the rack and the case and load on the drive mechanism can be reduced. Furthermore, by attaching a low friction member to the rack guide surface of the case,
The load on the drive mechanism can be reduced by reducing the abrasion and frictional resistance between the rack and the case that are in close contact with each other. In addition, by combining the configurations of claims 4 and 5, there are various advantages such as a lighter and smoother operation of the rack. Therefore, the present invention greatly contributes to the development of the industry as a skylight opening / closing device that solves the conventional problems.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a preferred embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing a preferred embodiment of the present invention.

FIG. 3 is a partially cutaway front view showing a use state of the preferred embodiment of the present invention.

[Explanation of symbols]

 2 Skylight 3 Drive shaft 4 Pinion gear 5 Case 10 Rack 10a High-strength girder 11 Ridge 12 Roller 13 Low friction member

Claims (5)

[Claims] 1. A skylight window having a rack (10) engaged with a pinion gear (4) rotated by a drive shaft (3) and performing a reciprocating linear motion guided by a case (5).
(2) A skylight opening / closing device pivotally attached to the other end for opening and closing, wherein a hollow high-strength girder (10b) is provided in a rack (10) guided by a case (5). Switchgear. A rack (10), which engages with a pinion gear (4) rotated by a drive shaft (3) and performs a reciprocating linear motion guided by a case (5), has one end pivotally connected to a structure.
(2) In a skylight opening / closing device pivotally connected to the other opening and closing end of the roller (12), the lower edge of the rack (10) guided by the case (5) is pivotally mounted on a vertical line around the center of the drive shaft. A skylight opening and closing device characterized by being supported by: A rack (10) meshing with a pinion gear (4) rotated by a drive shaft (3) and performing a linear reciprocating motion guided by a case (5) has one end pivotally connected to the structure.
In the skylight opening / closing device pivotally connected to the other opening and closing end of (2), the rack (10) guided by the case (5) is provided with a hollow high-strength girder (10b) and the rack (10) A skylight opening and closing device, wherein a lower edge of the skylight is supported by a roller (12) pivotally mounted on a vertical line about the center of the drive shaft. 4. The skylight opening / closing device according to claim 1, wherein ridges (11) for reducing a contact area are formed on both side surfaces of the rack (10). 5. A low friction member (13) is attached to a rack guide surface of a case (5).
Or the skylight opening / closing device according to 4.