JPH10253142A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability of a lid, wherein the lid which has an arcuate cross section and is rotatably supported in an eccentric condition is disposed such that it faces an opening, and an engaging portion formed in the rear end portion of the lid and the front end portion of the lid are respectively brought into contact with a seal member and a stopper which are respectively mounted on the upper and lower portions of the opening to obtain a closed condition. SOLUTION: In a ventilator for natural ventilation installed in a sash unit, a space is defined between an outdoor-side ventilation cover 7 mounted in an opening 6 formed in an outer frame 5 and an indoor-side ventilation cover 8 mounted on the outer frame. In the space, a lid 11 which has both side walls 9 thereof rotatably supported by a rotary shaft 10 is arranged such that is faces the opening 6. In the above construction, a seal member 12 is mounted on and along the upper portion of the inside of the opening 6, while a stopper 14 is mounted on and along the lower portion of the inside of the opening 6, wherein the stopper 14 is brought into contact with a front end portion 13 of the lid 11 which has an arcuate cross-sectional outer peripheral surface and is provided with an engaging portion 15 which protrudes in a peripheral direction. Due to such a construction, when the lid 11 is closed, the arcuate surface faces the opening 6 and the engaging portion 15 is hermetically brought into contact with the seal member 12 as the front end portion comes into contact with the stopper 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a ventilation device for natural ventilation in a curtain wall, a sash unit and the like.

[0002]

2. Description of the Related Art As a conventional ventilator, there is a ventilator having a structure shown in Japanese Utility Model Publication No. 55-37662. The above-described ventilator has a structure as shown in FIGS. That is, a shutter plate 1 having an arcuate surface on the outdoor side is provided with a rotation support shaft 2 at a center point of the arc surface and a ventilation hole 3 is provided.
And sealing members 4 are attached so as to surround the through holes 3 over the upper and lower wall portions and the left and right side wall portions of the through holes 3 so that when the shutter plate 1 is closed, these seal members 4 are in close contact with the outer peripheral surface of the shutter plate peripheral portion. And between the rotation support shaft 2 of the shutter plate 1 and the operation rod mounted on the indoor side, the vertical movement of the operation rod is converted into the rotation movement of the rotation support shaft 2. With the operating means interposed, a toggle dead center is set on the same horizontal line as the rotation support shaft 2, and the rotation direction of the shutter plate is selectively set in the closing direction and the opening direction of the shutter plate in accordance with the direction exceeding the toggle dead center. The rotary operation means is provided with a toggle mechanism for urging a spring pressure.

[0003]

However, according to the above structure, when the shutter plate rotates, the tip of the shutter plate rotates while rubbing the seal member, whereby the shutter plate and the seal member are eventually formed. Wear occurs on both of them, and as a result, the airtightness and the watertightness between the two cannot be maintained, and the problem that the original purpose cannot be achieved occurs.

Further, since a linear portion (flat portion) is formed on the upper portion of the shutter plate to form a close contact portion with the seal member, a large rotating area is required when the shutter plate rotates. There is a problem that a large ventilation hole is required and the whole structure becomes large.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method for rotating a side wall with an eccentric state by a rotating shaft in a space formed by an indoor ventilation cover and an outdoor ventilation cover attached to an outer frame having an opening. An opening / closing lid movably supported with an arc-shaped cross-section facing the opening, a sealing material provided along an upper portion inside the opening, and a stopper provided along a lower portion inside the opening; The locking portion at the rear end of the opening / closing lid abuts against the front end to obtain a closed state.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is an explanatory view of an open state, FIG. 2 is an explanatory view of a closed state, and in the figure, 5 is an outer frame,
An opening 6 is provided, and an outdoor ventilation cover 7 is attached to the opening 6.

Reference numeral 8 denotes an indoor ventilation cover attached to the outer frame 1. In the space formed by the indoor ventilation cover 8 and the outdoor ventilation cover 7, both side walls 9
The opening / closing lid 11 rotatably supported by the opening 11 is disposed so as to face the opening 6. A seal member 12 is attached along an upper portion inside the opening 6, and a stopper 14 serving as a seal and a stopper with which the front end portion 13 of the opening / closing lid 11 abuts are provided along an inner lower portion.

The opening / closing lid 11 has an arcuate cross section on the outer peripheral surface, and both side walls 9 of the circular shape are eccentrically supported by the rotating shaft 10, and a locking portion is provided at the rear end. Reference numeral 15 is formed so as to protrude toward the circumferential surface. The above eccentric state is
When the opening / closing lid 11 rotates, the peripheral surface of the opening / closing lid 11 does not touch the sealing material 12 and the peripheral surface of the opening / closing lid 11 approaches the sealing material 12 as it approaches the closed state. The locking portion 15 at the rear end is formed so as to be in close contact with the sealing material 12 when the front end portion comes into contact with the stopper 14 facing the opening 6.

The arc shape of the opening and closing cover 10 is the same as that of the opening and closing cover 1.
When 1 is in the open state, the opening 6 is an arc capable of forming an open state at or near 100%,
The air volume and the air direction can be adjusted by adjusting the angle of the ventilation blade attached to the opening 6. According to the above configuration, the opening / closing lid 11 is rotated by rotating the rotating shaft 10 by a manual or automatic rotating means (not shown). Because it is supported in an eccentric state,
The peripheral surface of the opening / closing lid 11 rotates without touching the sealing material 12.

In order to close the open / close lid 11, the open / close lid 11 is rotated by a rotating shaft 10.
When the cover 1 rotates, the peripheral surface of the opening / closing lid 11 does not touch the sealing material 12, and the peripheral surface of the opening / closing lid 11 approaches the sealing material 12 as it approaches the closed state, and the arc-shaped surface forms the opening 6. When the front end portion contacts the stopper 14 in opposition to the above, the locking portion 15 at the rear end portion comes into close contact with the sealing material 12. As a result, as shown in FIG. 1, a state in which the opening 6 is closed is obtained. Airtightness and watertightness are maintained. In addition, since the rotating shaft 10 is located on the indoor side of each contact portion between the opening / closing lid 11, the stopper 14, and the sealing material 12, the shaft center portion is kept watertight.

In order to open the opening 6, the rotating shaft 10
When the cover 11 is rotated, the opening / closing lid 11
2, the opening 6 is fully opened as shown in FIG.

[0012]

According to the present invention described in detail above, both sides are eccentrically rotated by the rotating shaft in the space formed by the indoor ventilation cover and the outdoor ventilation cover attached to the outer frame having the opening. An opening / closing lid having a circular cross section supported rotatably is disposed so as to face the opening,
The locking portion at the rear end of the opening / closing lid and the tip end abut against a sealing material provided along an upper portion inside the opening and a stopper provided along a lower portion inside the opening, thereby obtaining a closed state. As a result, the peripheral surface of the opening / closing lid can rotate without touching the sealing material during the opening / closing operation of the opening / closing lid, which has the effect of maintaining the durability of the opening / closing lid. Since the material and the stopper come into contact with and come into close contact with each other, there is an effect that a complete airtight and watertight state can be obtained.

Further, the opening / closing lid is formed in an arc shape and is rotatable by the rotation shaft, so that the opening can be fully opened at the time of opening.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an open state.

FIG. 2 is an explanatory view of a closed state.

FIG. 3 is an explanatory view of an open state of a conventional example.

FIG. 4 is an explanatory view of a closed state.

[Brief description of reference numerals]

 5 Outer frame 6 Opening 7 Outdoor ventilation cover 8 Indoor ventilation cover 9 Side wall 10 Rotating shaft 11 Opening / closing lid 12 Sealing material 13 Tip 14 Stopper 10 15 Locking part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Norio Kai 2-3 Candajicho, Chiyoda-ku, Tokyo Co., Ltd. Obayashi Corporation Tokyo Head Office (72) Inventor Nobuo Mizuno 2-3-3 Kandajicho, Chiyoda-ku, Tokyo (72) Inventor Hidehisa Tsuchiya 135, Nakamaruko Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fuji Sash Co., Ltd. (72) Inventor Yuichi Kawamura 135 Nakamaruko, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fuji Sash Co., Ltd. (72) Inventor Nao Sato 135 Nakamaruko, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujisashi Co., Ltd.

Claims (1)

[Claims] 1. A sectional shape in which both side walls are eccentrically supported by a rotation shaft in a space defined by an indoor ventilation cover and an outdoor ventilation cover attached to an outer frame having an opening. An arc-shaped opening / closing lid is disposed so as to face the opening, and a seal member provided along an upper portion inside the opening and a stopper provided along a lower portion inside the opening engage a rear end of the opening / closing lid. A ventilator characterized in that a stop portion and a tip portion come into contact with each other to obtain a closed state.