JPH0311638Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a ventilation system for a building that can reliably open or close a vent with a simple operation.

(Prior art and its problems) In a conventional ventilation system, an opening/closing lid is attached via a hinge to a vent provided in the roof of the building frame so as to be openable and closable. When ventilating the air in the room, the opening/closing lid is pushed up around the hinges to open the vent, and the pushed up opening/closing lid is supported with support rods to prevent it from falling. but,
With this, it is relatively time-consuming to push up the opening/closing lid and supporting it with the support rod, and if the support rod is not supported enough, the support rod may come off due to the wind, causing the opening/closing lid to be damaged. There was a risk that the greenhouse glass would break if it closed.

Also, on rainy days or at night, the opening/closing lid is pulled down to close the vent, and the opening/closing lid is pressed against the vent with a lock to secure it. However, this takes a relatively long time to lock.
Also, if the lock was forgotten or not locked properly, rainwater could seep into the room through the gap between the opening and closing cover of the vent.

(Problems to be Solved by the Invention) An object of the present invention is to provide a ventilation device that can reliably open or close a vent with a simple operation by utilizing the elastic force of a damper.

(Means for Solving the Problems) In order to solve the above problems, the present invention forms a ventilation hole 2 in the roof part 1a of the building frame 1, covers the ventilation hole 2 with an opening/closing lid 3, and An operating rod 12 is connected to the lid 3 in a hanging manner, and the operating rod 12 is movable only in the vertical direction by means of a guide member 14, and at least three springs 1 are always in an extended state.
Six telescoping dampers 17 are arranged at equal intervals around the operating rod 12, and the elastic force of each damper 17 is directed upward and downward with respect to the opening/closing lid 3 with the spring dead center A of the damper 17 as the boundary. A structure is adopted in which the control rod 12 is attached to the operating rod 12 so as to selectively act on the control rod 12.

This embodiment has a configuration in which a vent opening adjustment fitting 21 is fixed to a proper position below the guide member 14 of the operating rod 12.

(Example) This example shows the case where it is applied to an outdoor greenhouse, and as shown in the front view in Fig. 4, the plan view in Fig. 5, and the horizontal sectional view in Fig. 6, it has a hexagonal shape in plan view. Then, the top of the mountain-shaped roof part 1a of the greenhouse frame 1 is cut horizontally to form a vent 2, and the vent 2 is covered with an opening/closing lid 3. The body part 1b of the greenhouse body 1 consists of a frame 4 made of extruded aluminum and glass sliding doors 5 arranged on each of the six sides formed by the frame 4. In particular, the sliding door 5 at the entrance 6 Installing outer lock 7 (4th
figure). The roof 1a is made up of a frame 8 made of extruded aluminum, and a glass panel 9 disposed between the frames 8.

FIG. 1 shows the opening/closing operation mechanism of the opening/closing lid 3.
The figure and FIG. 3 each show a horizontal cross section of the main part.

In each of the above figures, the opening/closing lid 3 is composed of a substantially pyramid-shaped lid body 3a made of a transparent plate made of synthetic resin or glass, and a cap 3b screwed to the top of the lid body 3a. The outer peripheral edge of the back surface of 3a comes into contact with the watertight gasket 11 of the vent hole 2. An operating rod 12 having a hexagonal cross section is connected to the cap 3b in a hanging manner, and a through hole of a guide member 14 is provided at the intersection of three equally spaced horizontal girders 13 extending from the frame 8 constituting the vent 2 to the center of the greenhouse body 1. The lower part of the operating rod 12 is movably inserted into the holder. Therefore, the grip ball 15 at the bottom of the operating rod 12
When you lift the operating rod 12 by grasping the button, the opening/closing lid 3 will rise (as shown by the imaginary line in Fig. 1), and in contrast, the operating rod 12 will rise.
When the opening/closing lid 3 is pulled down, the opening/closing lid 3 is lowered (as shown by the solid line in FIG. 1) and comes into contact with the watertight gasket 11.

A two-stage telescoping damper 17 containing a spring 16 is arranged in each horizontal girder 13, and the elastic force of each damper 17 opens and closes the lid at both ends of the damper 17 with the spring dead center A of the damper 17 as the boundary. A connecting fitting 18 fixed to the operating rod 12 and a bracket 19 on the horizontal beam 13 are connected by pins, respectively, so as to act selectively upward or downward with respect to the horizontal beam 13.

A plurality of screw holes 20 are formed at appropriate intervals along the vertical direction in a suitable position below the guide member 14 of the operating rod 12, and a vent opening adjustment fitting 21 is fitted onto the operating rod 12 so as to be vertically movable. The metal fitting 21 is fixed at an appropriate height position of the operating rod 12 by passing through the metal fitting 21 and screwing a fixing screw 22 into an appropriate screw hole 20. Then, as described above, when the operating rod 12 is lifted, the metal fitting 21 hits the lower surface of the guide member 14 via the cushioning material 23.
This prevents the opening/closing lid 3 from rising. In addition, when the height of the metal fitting 21 is increased, the stroke between it and the guide member 14 becomes smaller, so the degree of opening of the vent hole 2 becomes smaller, and conversely, when the height is reduced, the stroke becomes larger. The opening degree of the vent hole 2 is also increased.

Based on the above configuration, the opening and closing procedure of the vent 2 will be explained. In the state shown by the solid line in FIG. 1, the damper 17 is located below the spring dead center A, and the elastic force of the spring 16 of each damper 17 is It is in a working state. Therefore, the elastic force of each damper 17 causes the opening/closing lid 3 to close the watertight gasket 11 of the vent 2.
is strongly pressed. For this reason, the vent 2
is completely closed, and rainwater will not infiltrate into the greenhouse through the vent 2.

Next, from the above state, grasp the grip ball 15 and lift the operating rod 12 so that the damper 17 is above the spring dead center A. As a result, the elastic force of each damper 17 acts upward, and even if the hand is released from the grip ball 15, the opening/closing lid 3 continues to rise due to the elastic force of each damper 17. When the metal fitting 21 hits the guide member 14, the opening/closing lid 3 stops rising, and the vent 2 becomes open as shown by the imaginary line in FIG. 1, so that the air in the greenhouse can be ventilated. Become. Furthermore, in the state where the vent 2 is opened in this manner, the elastic force of each damper 17 is always acting upward, so there is no fear that the opening/closing lid 3 will fall unexpectedly.

Furthermore, if you want to close the vent 2 again from the above state, grasp the grip ball 15 and pull it downward.
The damper 17 may be positioned below the spring dead center A. As a result, the elastic force of each damper 17 comes to act downward, and the opening/closing lid 3 is strongly pressed against the vent 2 by the elastic force (solid line state in FIG. 1).

In the above embodiment, the explanation was given using a hexagonal greenhouse in plan view as an example.
It can also be applied to circular, square, octagonal, etc. greenhouses. (Effects of the invention) According to the invention, when ventilating indoor air, it is sufficient to lift the operating rod and bring the damper above the spring dead center. As a result, the elastic force of the damper acts upward to lift the opening/closing lid and opening the vent, making it easy to operate and even if the opening/closing lid is blown by the wind.
There is no risk of it falling. In addition, if you wish to close the vent from this state, all you have to do is pull down the operating rod to bring the damper below the spring dead center. As a result, the resilient force of the damper acts downward to pull down the opening/closing lid and pressing the opening/closing lid against the vent.It is easy to operate, and there is no need to use a lock like in the past. The lid can be firmly pressed against the vent to securely fix it.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the main parts, Figure 2 is a sectional view taken along the - line in Figure 1, Figure 3 is a sectional view taken along the - line in Figure 1, Figure 4 is a front view of the outdoor greenhouse, and Figure 5. is a plan view of the same, and FIG. 6 is a horizontal sectional view of the same. DESCRIPTION OF SYMBOLS 1...Greenhouse frame, 1a...Roof, 2...Vent, 3...Opening/closing lid, 12...Operation rod, 14...Guide member, 16...Spring, 17...Damper, 2
1... Vent opening adjustment fitting, A... Spring dead center.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A vent is formed in the roof, an opening/closing lid is placed over the opening, an operating rod is connected to the opening/closing lid in a hanging manner, and the operating rod is vertically moved by a guide member. At least three spring-loaded telescoping dampers, which are movable at all times and are always in an extended state, are arranged at equal intervals around the operating rod, and the elastic force of each damper is set at the dead center of the spring of the damper. A ventilation device that is attached to an operating rod so that it can act selectively upward or downward with respect to the opening/closing lid. 2. The ventilation system according to claim 1, which has a vent opening adjustment fitting fixed to a proper position below the guide member of the operating rod.