JP2003336433A - Leg fitting of door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leg fitting for supporting a door having an automatic door closing mechanism, so that the door closes without causing impact noise. <P>SOLUTION: The leg fitting 5 is provided beneath a mounting seat plate 10 which is used to mount the door 1 in a building opening. A rotating shaft 19 with a disc 25 is inserted into a braking hole 24 in the leg fitting 5. An operating plate 20 provided on the rotating shaft 19 is connected to the door 1 by an operating pin 21. The rotating shaft 19 rotates when the door 1 is opened or closed. Because this rotation is resisted by a braking fluid sealed in the braking hole 24, the speed at which the door is automatically closed is slowed down whereby the door is closed slowly. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leg fitting for supporting a lower portion of a door which is closed automatically by an automatic door closing mechanism, and more particularly to a foot fitting for a door which prevents an impact noise when the door is closed. is there.

[0002]

2. Description of the Related Art Generally, doors such as toilet booths and counters are provided with an automatic door closing mechanism such as a gravity hinge or a spring hinge for closing the doors. It does not have the function of suppressing the speed. Therefore, the speed increases as the door closes, and when the door is closed, the door strongly hits the frame or door stop of the building opening, causing abnormal noise or impact noise, and it is annoying, and it may cause your hands or fingers to be caught. There was such a danger.

Further, in the case where the door is openably and closably supported by the upper support metal member and the lower support metal member, and the lower support metal member uses an automatic door closing mechanism such as a gravity hinge or a spring hinge,
The lower support metal fittings are provided with leg fittings for supporting an excessive weight so as not to hinder a person from hanging on the door.
Normally, the leg fittings have a height adjusting mechanism for surely supporting an excessive weight, but do not have a mechanism for controlling the self-closing speed of the door.

[0004]

The problems to be solved by the present invention are as follows.
(EN) Provided is a leg fitting used for a door that self-closes by an automatic door closing mechanism, in which the self-closing speed can be suppressed, the construction is simple, and the economically obtained.

[0005]

According to the present invention, there is provided a leg fitting which is provided between a building seat and a mounting seat plate which supports a lower end of a door which is closed by an automatic door closing mechanism and which is attached to a building opening. A leg fitting for a door is provided, which comprises a rotary shaft connected to the door so as to rotate in association with opening and closing of the door, and a braking means for braking the rotation of the rotary shaft. Issues are solved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a front view of a door. The door (1) is provided with a frame (2) provided in a building opening by an upper support metal fitting (3) and a lower support metal fitting (4). A leg fitting (5) is provided below the lower support fitting (4) so as to be openable and closable.

The door (1) is constructed so as to close itself by an automatic door closing mechanism provided at an appropriate position. A spring hinge or the like can be used as the automatic door closing mechanism, but in the embodiment shown in the figure, a gravity hinge is used as shown in FIG. The gravity hinge has cams (7) and (8) fitted into the central shaft (6),
The inclined cam surfaces (7a) and (8a) of the cams (7) and (8) are in contact with each other. One cam (7) is fitted in the door side seat plate (9) fixed to the lower end of the door (1) in a non-rotating state, and the other cam (8) is a substantially L-shaped mounting seat plate. Horizontal part of (10) (1
It is fixed to 0a). The central shaft (6) is also fixed to the mounting seat plate (10), and the vertical portion of the mounting seat plate (10) is fixed.
(10b) is fixed to the frame (2) of the building opening with screws.
With the above structure, the lower end of the door is supported by the mounting seat plate (10), and when the door is opened, it rises by the action of the cams (7) and (8), and when it is released from the door, it descends by its own weight. Close the door.

The leg fittings (5) are provided between the horizontal portion (10a) of the mounting seat plate (10) and the building floor (11) so as to support the excessive weight acting on the door. The leg fitting is a screw shaft (12)
And a floor seat plate (13) having a screw fixed to the floor, an adjusting nut (14) screwed to the screw shaft (12), and the adjusting nut.
It has a cylindrical body (15) provided between (14) and the mounting seat plate (10). The adjustment nut (14) can be formed in a polygonal outer periphery to facilitate turning, and a hook hole or the like can be provided on the peripheral surface, and the tubular body (15) and the adjustment nut (14) are 1
It is rotatably fitted through 6). The tubular body (1
5) has a notch groove (17) in the upper part, and is prevented from rotating by engaging a pin (18) protruding downward from the mounting seat plate (10) with the notch groove (17). Instead of the pin, a protrusion formed by cutting and raising a part of the mounting seat plate may be used.

The leg fitting (5) has a rotating shaft (19) connected to the door so as to rotate in association with opening and closing of the door (1).
And braking means for braking the rotation of the rotary shaft (19). The rotating shaft (19) has an operating plate (20) arranged concentrically with the central shaft (6) and extending along the lower end of the door, and the operating plate (20) and the door have operating pins (20). It is connected by 21). In FIG. 2, the operating pin (21) is fixed to the door side seat plate (9), and the tip of the operating pin (21) is a substantially U-shaped engaging groove (22) or hole formed in the operating plate (20). However, the operation pin may be fixed to the operation plate (20) and the tip end thereof may be engaged with the lower end of the door (1) (not shown). When the gravity hinge is used, the door moves up and down when opening and closing, so the length of the operating pin is set so that it does not come off even if it moves up and down.
The cylindrical body (15) is provided with a notch (23) of about ⅕ of the circumference so that it can rotate without any hindrance.

The central shaft (6) may be extended downward to serve as the rotary shaft (19) without using the operating plate (20) or the like. In the case of a spring hinge, etc., the central shaft may be fixed to the door side so that it rotates in conjunction with the opening and closing of the door.
In the case of a door using a gravity hinge, since the door moves up and down, the central shaft (6) is formed on a spline shaft, a serration shaft, an angular shaft, a modified cross-section shaft, etc. and rotates around the cam (7). It may be engaged in a vertically movable state in a stopped state and rotatably penetrate the cam (8) to form a rotary shaft (19) (not shown).

As the braking means, a means utilizing a spring or a means utilizing a frictional force can be used, but in the embodiment shown in FIG. 2, a means utilizing a fluid resistance is shown. That is, the cylindrical body (15) has a braking hole.
The rotary shaft (19) is provided with a disk (25) which forms (24) and is close to the inner surface of the braking hole (24) with a minute gap. The lower end of the rotating shaft (19) is fitted in the bearing hole (26), and the upper part thereof penetrates the lid body (27) fitted in the tubular body (15) and projects outward, The operating plate (20) is fixed to the protruding portion. The lid body (27) is fixed to the cylindrical body (15) by a fixing pin (28), and a braking fluid such as high-viscosity oil is sealed in the gap of the braking hole (24). The rotary shaft (19) and the lid (27) are sealed with O-rings (29) and the like provided at appropriate positions. With the above configuration, the rotating shaft (19) is rotated by the disc (2
Since fluid resistance acts on 5), it rotates while being braked.

In the above embodiment, the outer member (cylindrical body) is fixed, and the inner member (rotating shaft) is rotated by receiving the fluid resistance. However, the fixed member is arranged inside to rotate. The side members can also be located outside. In this case, a rotary shaft that rotates in conjunction with opening and closing of the door is formed into a tubular shape, and a braking hole is provided therein, and a fixed shaft having a disc is inserted into the braking hole. It suffices to attach the mounting plate by stopping it from rotation (not shown).

Thus, when the door is closed, the cam surface (7a) of the cam (7) is moved to the other cam (8) due to the weight of the door.
It is pressed against the cam surface (8a) of the, and when the door is opened, the cam (7) rises while rotating along the cam surface.
The door also moves upward.

At this time, the operating plate is moved by the operating pin (21).
(20) rotates in the same direction, and the rotary shaft (19) also rotates.
The actuating pin (21) rises from the position shown in FIG. 2, but the lower end of the actuating pin (21) extends longer than the actuating plate (20), so that the actuating pin is above the actuating plate. It does not come off. The rotation of the rotary shaft (19) receives a resistance in the braking hole (24) in which a braking fluid such as high-viscosity oil is enclosed, and the disc (2
Although it is braked by 5), when opening the door normally, the disc tip (25) is operated because the door tip part farther than the leg fittings (5) is operated.
The rotation resistance acting on the door has little effect on the door opening force, and there is almost no obstacle to the door opening.

When closing the door, when the hand is released from the door, the door rotates by its own weight while descending along the cam surface, whereby the door is closed. At this time, the closing force of the gravity hinge, the spring hinge, or the like is set to be weak in order to avoid a sudden closing of the door, but the acceleration according to the closing increases. However, as described above, the disk (25) of the rotary shaft (19) rotates while receiving resistance as the door rotates, so that the acceleration is suppressed and the door is safely and quietly closed.

Since the distance between the lower end surface of the door and the floor is not uniform and variations occur during construction, in order to reliably support the weight acting on the door, the horizontal portion of the mounting seat plate (10) should be supported.
It is necessary to closely attach the leg fittings (5) between (10a) and the building floor (11). For such adjustment, the adjusting nut (14) may be rotated to move up and down. At this time, since the thrust receiver (16) is provided between the tubular body (15) and the tubular body (15), the rotation of the adjusting nut is smooth, and even if the adjusting nut is rotated, the tubular body (15) is rotated. Is locked by the pin (18),
The position of the notch (23) can be held, and the rotation range of the operating plate (20) is not hindered.

[0017]

The present invention is constructed as described above, and a leg fitting for supporting a door having an automatic door closing mechanism is provided with a rotary shaft which rotates in conjunction with opening and closing of the door, and braking for braking the rotation of the rotary shaft. Since a means is provided, the door can be prevented from closing with a shock noise, and the leg fittings that support the excessive weight applied to the door also serve to brake the closing speed, so it does not take up space for storage and is a separate special It requires no construction and can be obtained easily and economically.

As described above, the present invention is effective in the case of a gravity hinge in which the door moves up and down when opening and closing, but it can also be used in a door having an automatic door closing mechanism such as a spring hinge, and can be used as an existing door. Can also be easily installed.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view of a leg fitting.

FIG. 3 is a plan view of a leg fitting showing a cross section of an upper portion.

FIG. 4 is an exploded perspective view.

[Explanation of symbols]

1 door 5 leg fittings 6 central axis 7,8 cam 10 Mounting seat plate 12 screw shaft 13 floor seat 14 Adjustment nut 15 tubular 16 Thrust receiver 19 rotation axis 20 Actuation plate 21 Actuating pin 24 braking hole 25 disk 27 Lid

[Procedure amendment]

[Submission date] June 26, 2002 (2002.6.2)
6)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 5

[Correction method] Change

[Correction content]

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naoshi Suzuki             3-37-38, Kuma Sakumacho, Chiyoda-ku, Tokyo             Issue Nakanishi Sangyo Co., Ltd.

Claims (9)

[Claims] 1. A leg fitting that is provided between a building seat and a mounting seat plate that supports a lower end of a door that automatically closes by an automatic door closing mechanism and the building floor, the leg fitting interlocking with opening and closing of the door. A foot leg fitting for a door, comprising: a rotary shaft connected to the door so as to rotate; and a braking means for braking the rotation of the rotary shaft. 2. The door leg fitting according to claim 1, wherein the rotary shaft has an operating plate extending along a lower end of the door, and the operating plate and the door are connected by an operating pin. 3. The door leg fitting according to claim 2, wherein the operating pin is fixed to a lower end of the door, and a front end of the operating pin is engaged with the operating plate. 4. The leg fitting for a door according to claim 2, wherein the operating pin is fixed to an operating plate, and a front end of the operating pin is engaged with a lower end of the door. 5. The door leg fitting according to claim 2, wherein the door has a central shaft that rotates together with the door when opening and closing, and the central shaft is the rotating shaft. 6. The leg fitting comprises a floor seat plate having a screw shaft, an adjusting nut screwed to the screw shaft, and a tubular body provided between the adjusting nut and the mounting seat plate. The rotating shaft and the braking means are provided on the tubular body.
Door leg fittings described in. 7. The braking means includes a braking hole formed in the cylindrical body, and a disc provided on the rotating shaft and adjacent to the inner surface of the braking hole with a gap therebetween. 7. The door leg fitting according to claim 6, wherein a damping fluid is enclosed. 8. The leg fitting for a door according to claim 6, wherein said tubular body is fixed to said mounting seat plate so as not to rotate and is rotatably fitted to said adjusting nut via a thrust bridge. 9. The door leg fitting according to claim 1, wherein the automatic door closing mechanism is a gravity hinge.