JPH058315B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to two parts of a window frame and a window plate attached to a roof.
In a skylight that is connected by a book link arm and is opened and closed by swinging the link arm while keeping the window board in a position approximately parallel to the window frame, the opening and closing operation of the window board can be performed easily over the entire opening and closing area. It relates to a balancing device used for

Conventional technology and problems to be solved by the invention Conventionally, as one of the skylights installed on the roof of a house for lighting and ventilation, a window frame attached to an opening in the roof and a window frame that closes the opening of the window frame are used. A skylight is known in which a window board is connected with two link arms, and the link arms are swung by a motor drive or the like to open and close the window board while keeping the window board substantially parallel to the window frame. However, in this type of skylight,
The moment around the center of swing of the link arm due to the window panel's own weight is maximum when the window panel is fully closed or fully open and the link arm is tilted the most, and the link arm assumes a vertical posture in the middle of the opening/closing region. It becomes 0 when
When opening and closing a window panel, a relatively small drive torque is required in the middle of the opening/closing area, but an extremely large drive torque is required to open the window from a fully closed state, or to close a window from a fully open state. It was hot.

Means for Solving the Problems As a means for solving the above problems, the skylight balancing device of the present invention includes a window frame attached to an opening in a roof, and a window plate that closes the opening of the window frame. in a skylight which is connected by two link arms, and which is opened and closed by swinging the link arms while keeping the window plate substantially parallel to the window frame; A link that swings integrally with the link arm around the swing center of the link arm is protrudingly provided at the connecting end on the window frame side, and the link arm is vertically disposed between the tip of the link and the window frame. The structure includes a spring body whose elasticity is minimum when the link arm is held in the open position, and whose elasticity increases as the link arm is tilted in the window opening direction and the window closing direction.

Functions and Effects The present invention has the above-mentioned structure, and the elasticity of the spring body interposed between the tip of the link and the window frame causes the moment around the swing center of the link arm to be large enough to balance the moment due to the weight of the window plate. It is possible to apply moments that are approximately equal and opposite in direction, and therefore, the moment that acts around the center of swing of the link arm can be kept extremely small in the entire range of the opening and closing states of the window pane. The opening and closing operations can be performed with a substantially uniform and small operating force.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIGS. 1 and 2 showing the first embodiment of the present invention, 1 is a window frame attached to an opening b of a roof a, and an opening 2 of the window frame 1 is attached to the upper surface of the window frame 1. A window plate 3 with a glass plate 4 stretched over the central part that closes the window frame 1 is covered with a window plate 3, and the window frame 1 and the window plate 3 are connected to two link arms 6, 7 at the front and rear, which are arranged symmetrically on both the left and right sides. The straight link arm 6 on the front side has its upper end connected to a bracket 8 at the front end of the side edge of the window panel 3, and its lower end connected to a shaft 9 at the center of the side edge of the window frame 2, respectively. 10, supported freely to swing,
On the other hand, the lower end of the rear link arm 7 is bent at a substantially right angle so that the link arm 7 straddles the window frame when the window panel 3 is opened, and its upper end is bent toward the side of the window panel 3. It is supported by a shaft 13 on a bracket 12 at the center of the edge so that it can swing freely, and the lower end of the link arm 7 passes through bearing plates 15, 15 protruding from both ends of the rear edge of the window frame 1. A worm wheel 18 is fixed to the center of the drive shaft 16, and a bevel gear 20 at the lower end of the worm 19 meshes with the worm wheel 18. , reversible motor 2
The drive shaft 16 is meshed with a bevel gear 22 fixed to the output shaft of the window frame 1, and is housed in a case 23 attached to the window frame 1, and is driven by a reversible motor 21 to rotate the drive shaft 16 in the forward or reverse direction. Then, the rear link arm 7, which is integral with the drive shaft 16, swings around the axis of the drive shaft 16, and at the same time, the front link arm 6 swings around the shaft 10, and the window plate 3 moves into the window frame 1. It is designed to open and close at an opening angle of 157° while maintaining a parallel posture.

Links 25, which are arranged symmetrically on the outside of the bearing plates 15, 15 of the drive shaft 16 described above,
The base ends of the links 25 are fixed, and these links 25 are connected to the window plate 3 as shown by solid lines in FIG.
When fully closed and both link arms 6 and 7 tilt forward, the window plate 3 opens and the front link arm 6 faces downward, as shown by the chain line in the figure.
When the line connecting the shaft 13 at the upper end of the rear link arm 7 and the drive shaft 16 is in a vertical position, it becomes parallel to the window frame 1, and the window plate 3 is fully opened and both link arms 6 and 7 are connected. When the window frame 1 is tilted backward, it faces upward, and a pair of gas springs 26, 26 are mounted on both side edges of the window frame 1, parallel to the window frame 1, with brackets 27, 27 facing forward. This gas spring 26 is attached by
A piston with a protruding rod 29 is fitted into the cylinder 28 so as to be freely slidable, and gas is filled in the rear chamber of the piston.
By retreating into the gas spring 8, the gas is compressed to obtain restoring elasticity, and the tip of the gas spring 26 and the tip of the link 25 described above are connected by a connecting rod 30.

Next, the operation of this embodiment will be explained.

First, considering the moment around the axis of the drive shaft 16 due to the dead weight of the window plate 3 when the window plate 3 opens and closes, the curve X in FIG. As shown, when the window plate 3 is fully closed and both link arms 6 and 7 are folded, the maximum moment in the clockwise direction acts, and the window plate 3 opens and both link arms 6 and 7 are folded. As arm 7 stands up, the length of the arm of the moment becomes shorter, so the moment gradually decreases, and when both link arms 6 and 7 take a vertical posture, the moment becomes 0, and as the opening progresses further, both As the link arms 6 and 7 tilt toward the rear, a counterclockwise moment gradually increases, and when the window plate 3 is fully opened, a maximum counterclockwise moment acts.

During opening and closing of the window plate 3, the link 25 swings together with the link arm 7 around the axis of the drive shaft 16, and when the window plate 3 is in the fully closed state, the link 25 moves downward. Gas spring 2 by facing
The rod 29 of No. 6 retreats the furthest to obtain the maximum elasticity, and as the window plate 3 opens, the link 25 gradually changes direction in the horizontal direction and the rod 29 moves forward, reducing the elasticity. When the link arms 6 and 7 take a vertical posture, the link 25
is parallel to the gas spring 26 and the rod 29
Since the rod moves forward the most, the elasticity becomes the minimum, and as the opening progresses, the link 25 gradually points upward and the rod 29 retreats again, so the elasticity gradually increases.

Therefore, the drive shaft 16 is driven by the elasticity of the gas spring 26 acting on the link 25 via the connecting rod 30.
As mentioned above, the moment about the axis of the gas spring 26 is caused by the elasticity of the gas spring 26
is minimum when the link arms 6 and 7 are in a vertical position, and gradually increases as they are tilted to both sides.The moment arm length is 0 when both link arms 6 and 7 are in a vertical position, The maximum moment acts in the counterclockwise direction when the window plate 3 is fully closed, as shown by the curve Y in FIG. 3, in balance with the curve X. As the moment opens, the moment decreases and becomes 0 when both link arms 6 and 7 assume a vertical posture.
As the opening progresses further, the moment in the clockwise direction will gradually increase and act on the opposite side. Therefore, the moment about the axis of the drive shaft 16, which is the sum of both moments, will be applied to the entire opening/closing area of the window plate 3. The value becomes extremely small throughout the area, and it becomes possible to operate the window plate 3 over the entire area with a small operating force.

FIG. 4 shows a second embodiment of the present invention, in which, in place of the gas spring 26 of the first embodiment, a pin 37 is provided protruding from the tip of the link 25, and a pin 37 is provided protruding from the side edge of the window frame 1. Both ends of the tension coil spring 36 are hooked to the pin 38, and the elasticity of the tension coil spring 36 is at its minimum when both link arms 6, 7 assume a vertical posture as the window panel 3 is opened and closed. The elasticity gradually increases as it is tilted to both sides, and as in the first embodiment, the moment around the axis of the drive shaft 16 due to the elasticity of the tension coil spring 36 is
It acts to balance the moment due to the window plate 3's own weight.

As yet another embodiment, for example, a link is protruded from the end of the front link arm 6 connected to the window frame 1 so that it can rotate integrally, and between the tip of this link and the window frame 1, both link arms 6, A compression coil spring may be provided so that the elasticity is minimum when 7 is in a vertical position, and the elasticity gradually increases as it is tilted to both sides.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the first embodiment of the present invention, FIG. 2 is a side sectional view thereof, and FIG. 3 is a graph showing the relationship between the opening degree of the window plate and the moment about the axis of the drive shaft. FIG. 4 is a side sectional view of the second embodiment. a... Roof, b... Opening, 1... Window frame, 2...
Opening, 3... Window plate, 6, 7... Link arm, 1
6... Drive shaft, 25... Link, 26... Gas spring, 28... Cylinder, 29... Rod,
30...Connecting rod, 36...Tension coil spring.

Claims (1)

[Scope of Claims] 1. A window frame attached to an opening in a roof and a window plate that closes the opening of the window frame are connected by two link arms, and the swing of the link arms causes the window plate to be connected to the window frame. In a skylight that opens and closes while maintaining an attitude substantially parallel to the window frame, a connecting end of at least one of the link arms on the window frame side is integrally connected to the link arm about the center of swing of the link arm. A link is protrudingly provided between the tip of the link and the window frame, and when the link arm is taken in a vertical position, the elasticity is minimum, and the link arm is moved in the window opening direction and the window closing direction. A balancing device for a skylight, characterized by interposing a spring body whose elasticity increases as it is tilted. 2. Claim 1, wherein the spring body is a gas spring in which gas is sealed in a cylinder in which a piston rod is slidably fitted.
Balancing device for skylights as described in section. 3. The skylight balancing device according to claim 1, wherein the spring body is a tension coil spring. 4. The skylight balancing device according to claim 1, wherein the spring body is a compression coil spring.