JPH09209647A - Hanger roller mechanism of automatic door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pivot an auxiliary roller between a pair of traveling rollers to easily assemble the auxiliary roller, in a hanger roller mechanism in which a pair of traveling rollers of an automatic door device are supported by a hanger metal tool in a see-saw state. SOLUTION: The nearly middle part of a roller metal tool 2 supporting synthetic resin traveling rollers 4, 4 at both ends is pivoted on a hanger metal tool 1 with screws so as to be movable like a see-saw. A metallic auxiliary roller 5 is rotatably fitted with screws so that the auxiliary roller is separated from the base rail 11b and disconnected from it when the traveling rollers 4, 4 are connected to the base rail 11b and rotatably connected to the base rail 11b when the traveling rollers 4, 4 have molten at a fire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a hanger roller mechanism used for suspending a door on a base race so that the door can run freely in an automatic door device.

[0002]

2. Description of the Related Art Conventionally, in this type of hanger roller mechanism, as is known, one running roller is provided for each hanger fitting at the upper edge of the door and fixed at both ends in the width direction thereof. A method of axially supporting and a method of axially supporting two traveling rollers for one hanger fitting are widely used.

Comparing the method of one roller and the method of two rollers from the viewpoint of durability, even if the former method of one roller is used, if the diameter of the running roller is increased, The same durability as that of the latter, which is an individual piece, will be obtained, but by increasing the diameter of the roller in this way, the height and width dimensions of the base are specified, so The hanger fitting must be attached near the center of the door in the width direction so that the roller having a large diameter does not hit the so-called engine part having the provided motor and reducer part. That is, if the position of the hanger fitting approaches the widthwise central portion as described above, a person is detected during the closing operation of the door, and when the door suddenly reverses and opens, or when the door is fully opened or fully closed. When the deceleration brake is activated during operation, the door tilts to the left and right, and it is easy to dance up and down.Because the hanger metal fittings are attached, the tap processing position on the door side that is set in advance is The installer must always check and work.

On the other hand, in the case of the two-roller system,
Since it is possible to reduce the diameter of the roller,
As shown in FIG. 11, the traveling rollers d, d, ... Are reached to a position directly below the motor b and the driven pulley c provided on the base a.
It is possible to extend the base rail e through which the vehicle can travel.
On the other hand, it is possible to specify the same small dimensions i, i from the left and right ends of the door g. As a result, the tapping dimensions can be set uniformly, and the confirmation work is not required.
Since it is in a stable suspended state, it is possible to guarantee a smooth open / close running operation without causing left / right fluctuation during open / close operation.

Further, the above hanger roller mechanism includes
It is represented by a combination of a metal base rail made of non-ferrous metal such as aluminum or iron, and a traveling roller made of metal similar to this, and the metal base rail, nylon, Delrin, etc. A combination of a running roller made of synthetic resin has already been used.

The metal base rail using a metal running roller is superior in durability to the metal base rail using a synthetic resin running roller. However, since noise such as running noise and operation noise is generated considerably, the door is large and heavy, and the position of the traveling roller is high, so the noise is not very problematic. It is used in factories that are not used.

On the other hand, a metal base rail,
The one using a synthetic resin running roller has a low door height, therefore the running roller mounting height is also low, and it is used in stores, offices, etc. where noise is a concern. Is common.

As described above, the hanger roller mechanism using the running rollers made of synthetic resin has a unique advantage, but in the event of a fire,
The running rollers made of synthetic resin are melted by heat, and as a result, the door falls on the lower guide rail and the floor surface, so that the door cannot be opened and closed. Then, at this time, if the door falls down in the fully closed state, it becomes difficult for a person who understands the structure of the automatic door device to move the fairly heavy door in the opening direction, Especially in the event of a fire, people inside will not be able to escape, which can lead to serious problems.

From the above, even if the traveling roller is deformed or melted due to a fire or the like, it is possible to melt it by heat so as not to hinder the opening and closing operation of the door. It has already been proposed to incorporate an auxiliary roller with no metal.

Here, FIGS. 8 to 10 show the above-mentioned proposal concerning the hanger roller mechanism o based on the two-roller system, and the hanger roller mechanism o is provided on one side of the roller fitting k as is known. A pair of two synthetic rollers d, made of synthetic resin, are rotatably supported on both ends in the longitudinal direction by a horizontal shaft j. Further, substantially the middle portion of the traveling rollers d, d is pivotally supported by a support shaft n laterally with respect to the vertical plate portion m of the hanger fitting l so that it can swing like a seesaw. Hereinafter, how each metal auxiliary roller p is incorporated into the hanger roller mechanism o will be explained with reference to the drawings. In the drawings, g indicates a door to which the hanger metal fitting 1 is fixed, e indicates a base rail, and r indicates an intermediate plate which is a member of the hanger roller mechanism o.

First, in FIG. 8, one end in the longitudinal direction of the vertical plate portion m of the hanger metal fitting 1 is extended laterally, and the auxiliary roller p is pivotally supported on one surface of the extended end. . On the other hand, in the structure shown in FIG. 9, one end of the intermediate plate r is extended to the front side and the auxiliary roller p is axially supported on one surface of the extended end. Further, FIG.
What is shown in (A) and (B) is that the roller fitting k is
It is formed to be longer than the hanger metal fitting 1 and the intermediate plate r, and the auxiliary rollers p,
It supports p.

[0012]

However, in the structure shown in FIGS. 8 and 9, the hanger metal fitting 1 and the intermediate plate r are long and different from those of the conventional two-roller system. There is a problem that the cost becomes high.

Further, in the case of FIG. 10, since the auxiliary rollers p, p are pivotally supported at both ends of the roller fitting k, the length of the roller fitting k is further increased, and the door is suspended at a special position. However, even if only one auxiliary roller p, which is not normally used, must be selected for each hanger bracket, two will be used for each hanger fitting, and therefore two additional rollers will be added for each door g. Therefore, it becomes quite expensive.

In view of the above-mentioned problems of the prior art, the present invention provides the roller fitting according to claim 1, wherein one auxiliary roller is incorporated between the running rollers at both ends thereof. Not only can the auxiliary roller be easily incorporated into the existing two-roller hanger roller mechanism, but the number of parts used in connection with the auxiliary roller is also small, and low cost can be provided. The purpose is to make it advantageous in terms of compatibility and maintenance parts even if the traveling roller needs to be replaced for maintenance.

According to the second aspect of the present invention, by appropriately configuring the mounting structure of the auxiliary roller, when the traveling roller is melted by a fire and the auxiliary roller engages with the base rail, a simple force can be applied. In addition, the door can be opened and closed smoothly. Further, in claim 3,
By providing a configuration in which the auxiliary roller travels on the special auxiliary rail, even if the opening / closing operation of the door is continued in an emergency, the base rail for the traveling roller will not be inadvertently worn. Then, the normal door opening and closing operation can be started easily again by exchanging only the traveling rollers.

[0016]

In order to achieve the above object, the present invention provides a horizontal plate portion fixed to an upper edge of a door and a curved plate which is orthogonally bent upward from the horizontal plate portion. On one side at both ends in the length direction, with a hanger metal fitting consisting of a vertical plate part, two pairs of running rollers made of synthetic resin can roll on a metal base rail and run. , A roller fitting which is rotatably supported by a lateral shaft and which is attached to the vertical plate portion of the hanger fitting so as to be swingable in a seesaw shape at a substantially middle portion of the traveling rollers. And a metal auxiliary roller that is in a disengaged state separated from the base rail between the two traveling rollers in the roller fitting when the both traveling rollers are engaged with the base rail. There have been attempts to provide a hanger roller mechanism of an automatic door apparatus characterized by being pivotally supported to be rotatable by a screw shaft.

Further, according to a second aspect of the present invention, a hanger fitting comprising a horizontal plate portion fixed to the upper edge of the door and a vertical plate portion bent upward in a direction orthogonal to the horizontal plate portion, and at both ends in the longitudinal direction. On one side, a pair of two synthetic resin running rollers are rotatably supported by a lateral shaft so that they can roll and run on a metal base rail, and
At a substantially intermediate portion of both the traveling rollers, a roller metal fitting attached by a screw shaft so as to be swingable in a seesaw shape with respect to an intermediate plate fixed to a vertical plate portion of the hanger metal fitting, At the end of the screw shaft protruding through the roller fitting, a fixing nut screwed through a washer, an auxiliary roller made of a metal having a smaller diameter than the traveling roller via a bearing, Provided is a hanger roller mechanism for an automatic door device, which is mounted so as to be rotatable in a disengaged state separated from the base rails when the traveling rollers are engaged with the base rails. I am trying.

Further, according to a third aspect of the present invention, there is provided a hanger fitting comprising a horizontal plate portion fixed to an upper edge of the door and a vertical plate portion which is bent upward in a direction orthogonal to the horizontal plate portion. On one surface at both ends of, two pairs of running rollers made of synthetic resin are rotatably supported by a lateral shaft so that they can roll and run on a metal base rail, and In the approximately middle portion of the two traveling rollers,
A roller metal fitting that is swingably attached in a seesaw shape to the vertical plate portion of the hanger metal fitting, and a base of the two running rollers is provided between the two running rollers of the roller fitting. In the engaged state with respect to the rails, the metal auxiliary roller, which is in the disengaged state and is separated from the auxiliary rail provided in the base at a predetermined interval from the base rail, is rotatably supported by the screw shaft. The present invention aims to provide a hanger roller mechanism for an automatic door device, which is characterized in that

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is intended to achieve the above object. First, an embodiment of a hanger roller mechanism in an automatic door apparatus according to claims 1 and 2 will be described with reference to FIGS. Will be described in detail below. In this embodiment, a hanger fitting 1, a roller fitting 2, an intermediate plate 3, a pair of two traveling rollers 4, 4, one auxiliary roller 5, two pairs of bolts 6, 6 and nuts 7, 7, two pieces. A pair of lateral shafts 8, 8 and one screw shaft 9 and a fixing nut 1
0 is the main member.

The hanger fitting 1 is integrally formed by a vertical plate portion 1a in a standing state and a door fixing horizontal plate portion 1b bent at a right angle from the lower end of the vertical plate portion 1a. is there. As shown in FIGS. 3 and 4, the horizontal plate portion 1b is located on the upper surface of the end portion of the lower horizontal plate portion 11a of the base 11 on the side opposite to the base rail 11b side projecting in the length direction. As clearly shown in FIG. 2, the long holes 12, 12 for bolt insertion are orthogonal to the length direction, that is, in the plate thickness direction of the door 13 near the both ends in the length direction. It has been built for a long time.

The vertical plate portion 1a of the hanger fitting 1
Are projecting plate parts 1c, 1
Since c is symmetrically projected and extended, as is understood from FIG. 1, it is formed in a substantially T-shaped front shape.

The roller fitting 2 is formed in the shape of a strip that is long in the lengthwise direction of the hanger fitting 1 and has a pair of two running rollers on one surface on the base 11 side at both ends in the lengthwise direction. 4 and 4 are rotatably supported by lateral shafts 8 and 8, and an attachment hole 14 provided for the screw shaft 9 is formed in the plate thickness direction, which is provided laterally, at an intermediate portion in the longitudinal direction. It is set up.

The intermediate plate 3 is formed in a long strip shape in the length direction of the hanger fitting 1, and is one side of the vertical plate portion 1a of the hanger fitting 1, that is, the horizontal plate portion 1b.
Is piled up on one surface on the opposite side, and near the both ends in the length direction, the pair of two bolts 6 and 6 and nuts 7 and 7 described above.
It is fixed to the hanger fitting 1 by.

More importantly, at the intermediate portion in the length direction of the intermediate plate 3, the screw shaft 9 described above is
The projecting portion that penetrates laterally, that is, in the plate thickness direction, and projects toward one surface side of the intermediate plate 3 of the screw shaft 9 is attached to the mounting hole 1 of the roller fitting 2 through the collar 15.
4 is fitted. Therefore, the roller fitting 2 has the intermediate plate 3 with the screw shaft 9 as the center of rotation.
And for the hanger fitting 1 to which it is fixed,
It is pivotally supported so that it can swing like a seesaw.

Further, as shown in FIG. 3, a fixing nut 10 is sequentially screwed to the end portion of the protruding portion of the screw shaft 9 protruding from the roller fitting 2 through a flat washer 16 and a spring washer 17. The outer shape of the fixed nut 10 is formed as a large-diameter polygonal portion 10a at its outer end portion, and is formed as a small-diameter cylindrical portion 10b on the inner side thereof, and further, the diameter is small. A bearing 18 such as a bearing is fitted on the outer periphery of the cylindrical portion 10b and is fixed by a retaining ring 19, and the auxiliary roller 5 is fitted and externally fitted to the bearing 18, and the retaining ring 20 does not drop the bearing. It is mounted so that it can rotate freely.

The above-mentioned two pairs of running rollers 4, 4
Is formed of a synthetic resin material such as nylon or delrin to have the same diameter, but the auxiliary roller 5 is formed of a non-ferrous metal such as aluminum, a metal material such as iron, and the traveling roller 4, 4 is formed to have a smaller diameter than that of the roller 4. Therefore, as shown in FIGS. 1 and 4, when the pair of traveling rollers 4, 4 are engaged with the base rail 11b, Auxiliary roller 5
3 is held above the base rail 11b in a floating state separated from the base rail 11b as clearly shown in FIG. 3, and when the traveling rollers 4 and 4 are melted by heat at the time of a fire. First, auxiliary roller 5
Descends and is thereby engaged with the base rail 11b so that it can travel freely. The base race 11b described above can be formed of a non-ferrous metal or a metal material in the same manner as the auxiliary roller 5 as is known.

Further, when the running rollers 4 and 4 are worn in a normal use state and the auxiliary roller 5 starts running, a running noise different from that in a normal use state is emitted. Running roller 4,
Since the wear of No. 4 can be determined, the deformation and wear of the base rail 11b will occur in such a case. Therefore, as shown in FIG. The base rail 11b and the traveling rollers 4, 4 can be replaced by attaching and detaching them so that they can be replaced.
Can be immediately replaced with a new member, which makes it possible to always ensure a light running operation.

Next, the hanger roller mechanism of claim 3 will be described in detail below with reference to FIGS. 6 and 7. The mechanism includes two pairs of running rollers 4, 4 and an auxiliary roller 5.
In addition, instead of sharing a single base rail 11b, the auxiliary roller 5 is axially supported at a position projecting toward the base 11 side more than the pair of traveling rollers 4 and 4, On the lower horizontal plate portion 11a of the auxiliary rail 1 at a suitable distance from the base rail 11b.
1d is installed side by side, and the auxiliary rail 11d is connected to the auxiliary roller 5
It will be a dedicated rail.

In this case, the intermediate portions of the two traveling rollers 4, 4 in the roller fitting 2 are bent toward the base 11 side as a substantially horizontal U-shaped portion 2a in a plane as clearly shown in FIG. The screw shaft 9, which is laterally penetrated and fixed to the middle portion in the length direction of the, penetrates the U-shaped portion 2a and protrudes toward the base 11 side, and the auxiliary roller 5 is attached to the protruding end portion, for example, as illustrated in FIG. It suffices to mount it in the configuration shown in 3.

Also in this case, as shown in FIG. 6, when the pair of traveling rollers 4 and 4 are engaged with the base rail 11b, the auxiliary roller 5 is separated from the auxiliary rail 11d and is not engaged. In the combined state, it is held above the auxiliary rail 11d.

Therefore, when the hanger roller mechanism described above is used, the door 13 is temporarily attached to the hanger fittings 1 and 1 with the bolts 21 and 21, and two pieces are provided as shown in FIGS. 1, 4, 5, and 6. After the pair of traveling rollers 4 and 4 are engaged with the base rail 11b of the base 11 and the door 13 is installed and adjusted, the bolts 21 and 21 are tightened, so that the hanger fittings 1 and 1 are attached to the door 13. It is fixed to the upper edge and the suspension of the door 13 is completed.

By doing this, the roller fitting 1,
Since 1 is not fixed and is swingable with respect to the intermediate plate 3 and the hanger fitting 1 in a seesaw state, both traveling rollers 4 and 4 are properly mounted on the base rail 11b. , It never rises. On the other hand, the auxiliary roller 5 is the base rail 11b or the auxiliary rail 11
The rails 11b and 11d are located above the rails 11d and 11d and are held in a disengaged state, and when the traveling rollers 4 and 4 are melted by the heat at the time of a fire, the rails 11b and 11d are not connected. The door 13 can be moved by being attached to the door.

[0033]

Since the present invention is constructed as described above, the first aspect of the present invention enables opening and closing of the door when the pair of traveling rollers are melted by a fire. Since the auxiliary roller of this is installed between the roller fittings in the hanger rail mechanism of the current two-roller system, it can be assembled at the factory shipping stage before installation on the site, and fire prevention measures after completion of construction As a result, it is possible to easily meet the demand for improving the door.

Further, the auxiliary roller can be incorporated without using special parts or tools by using a bolt or the like for swingably attaching the roller fitting to the hanger fitting, which is also low in this point. Cost can be provided, and auxiliary rollers can be installed in the conventional two-roller hanger roller mechanism, so compatibility with the maintenance and maintenance is required when the traveling rollers need to be replaced. Will also be advantageous.

Further, according to the second aspect, since the screw shaft is used as the swing fulcrum shaft of the roller fitting, and the auxiliary roller is attached via the bearing by the screw shaft, the door can be opened and closed by the auxiliary roller. It can be performed easily and smoothly with a smaller force. Further, in claim 3,
In an emergency, even if the door is opened and closed by operating the auxiliary roller, the base rail for the traveling roller will not be worn.Therefore, after a fire occurs, it is normal to replace the traveling roller only. The door opening / closing operation can be restarted lightly.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a hanger roller mechanism of an automatic door device according to the invention of claims 1 and 2.

FIG. 2 is a partially cutaway front view of the above-described embodiment in a use state.

3 is a vertical sectional view taken along the line AA in FIG.

FIG. 4 is a partial cross-sectional view taken along the line BB in FIG.

FIG. 5 is a side view with a part of a main part cut away showing another embodiment of the hanger roller mechanism.

FIG. 6 is a side view of a hanger roller mechanism according to a third embodiment of the present invention, with a part of a main part cut away.

FIG. 7 is a partially cutaway plan view showing the embodiment.

FIG. 8 shows a hanger roller mechanism in a conventional automatic door device, (A) is a partially cutaway plan view, and (B) is a partially cutout front view.

FIG. 9 shows another example of the same hanger roller mechanism,
(A) is a partially cutaway plan view, and (B) is a partially cutaway front view.

FIG. 10 is a further cutaway plan view of the same hanger roller mechanism, in which (A) is a partially cutaway plan view and (B) is a partially cutaway front view.

FIG. 11 is a front view showing an automatic door device provided with a conventional two-roller hanger roller mechanism.

[Explanation of symbols]

 1 Hanger bracket 1a Vertical plate part 1b Horizontal plate part 2 Roller bracket 3 Intermediate plate 4 Running roller 5 Auxiliary roller 8 Horizontal shaft 9 Screw shaft 10 Fixing nut 11b Base rail 11d Auxiliary rail 13 Door 18 Bearing

Claims (3)

[Claims] 1. A horizontal plate portion fixed to an upper edge of a door,
A hanger fitting consisting of a vertical plate portion bent upward in an orthogonal shape from this, and a pair of two running rollers made of synthetic resin on one surface at both ends in the longitudinal direction are metal bases. It is rotatably supported by a lateral shaft so that it can roll and run on the rails, and in a seesaw shape with respect to the vertical plate portion of the hanger metal fitting at a substantially intermediate portion of both the traveling rollers. And a roller metal fitting mounted so as to be swingable, and between the two traveling rollers in the roller metal fitting, the two rollers are separated from the base rail in an engaged state with the base rail. A hanger roller mechanism for an automatic door device, characterized in that a non-engaged metal auxiliary roller is rotatably supported by a screw shaft. 2. A horizontal plate portion fixed to an upper edge of the door,
A hanger fitting consisting of a vertical plate portion bent upward in an orthogonal shape from this, and a pair of two running rollers made of synthetic resin on one surface at both ends in the longitudinal direction are metal bases. In order to be able to roll and run on the rails, a horizontal shaft is rotatably supported by a horizontal shaft, and the intermediate plate fixed to the vertical plate part of the hanger fitting is approximately at the intermediate part of the two rollers for running. And a roller fitting that is attached by a screw shaft so that it can swing in a seesaw shape, and the end of the screw shaft that protrudes through the roller fitting is screwed through a washer. An auxiliary roller, which is made of metal and has a diameter smaller than that of the traveling rollers, is attached to the fixed nut via a bearing in a non-engagement state separated from the base rails in an engaged state of the traveling rollers. Hanger rollers mechanism of an automatic door apparatus characterized by mounted to be rotatable in the state. 3. A horizontal plate portion fixed to an upper edge of the door,
A hanger fitting consisting of a vertical plate portion bent upward in an orthogonal shape from this, and a pair of two running rollers made of synthetic resin on one surface at both ends in the longitudinal direction are metal bases. It is rotatably supported by a lateral shaft so that it can roll and run on the rails, and in a seesaw shape with respect to the vertical plate portion of the hanger metal fitting at a substantially intermediate portion of both the traveling rollers. And a roller fitting which is mounted so as to be capable of swinging between the two running rollers of the roller fitting, and when the both running rollers are in engagement with the base rail, the above-mentioned base is present in the base. A metal auxiliary roller that is in a disengaged state and is separated from an auxiliary rail provided at a predetermined distance from the rail is rotatably supported by a screw shaft. Hanger roller mechanism of automatic door apparatus that.