JP2004169307A - Base bed plate of automatic door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base bed plate of an automatic door, increasing convenience in use by simplifying the structure and reducing the weight, and heightening the sound absorption effect in opening and closing the automatic door to soften noise. <P>SOLUTION: In this base bed plate of the automatic door, the bed plate bodies 10, 20, 30 are elongated substantially L-shaped or substantially U-shaped, a driving device 3 is attached, and a door 2 is suspended to be opened and closed. Hollow parts 12a, 22a, 32a having a closed section are formed extending over the whole length in the longitudinal direction in the lower part of the bed plate body and the hollow parts are filled with synthetic resin foam body 14. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a base plate for an automatic door, and more particularly, to a base plate disposed in an open space above a doorway of a building or a room where an automatic door is installed.
[0002]
[Prior art]
As a conventional base plate, a horizontally long substantially L-shaped or substantially U-shaped base plate body having a length substantially equal to the length of the eyeless portion, and a drive device or a controller such as an automatic door engine is attached thereto. A base plate that hangs a door so that it can be opened and closed is widely known, for example, as shown in Patent Document 1 and Patent Document 2.
Further, in a sliding door type automatic door, a separate rail is integrally attached to a lower portion of the base base plate to dispose the door so that the door can be opened and closed (see Patent Document 2). It is also known that a rail is integrally formed on a lower end of a plate by extrusion molding (see Patent Document 1).
[0003]
However, in the above-mentioned conventional base plate, since a driving device is attached and a heavy door is hung on a rail by a door roller, a substantially L-shaped or substantially U-shaped base plate body is large. Since the rigidity needs to be ensured, the overall plate thickness is set to be large. Particularly, the rail support to which a large load is applied is further increased in thickness to prevent the twisting phenomenon (see Patent Document 1). ).
Therefore, the base plate body is not only expensive but also heavy and inconvenient for transportation and handling.
[0004]
On the other hand, in the case of an automatic door, in the case of a sliding door type or a rotating slide type, a rail is integrally attached to the base plate body or integrally molded and integrated. Since the bearings are integrated with the base plate body, the sliding noise of the door wheel and the operating sound of the engine, which occur when the door is opened and closed, are reflected on the base plate body and cause noise. Particularly at nighttime when installed at the entrance of a residential building, it is a problem because it gives occupants a discomfort.
In order to solve such a problem, conventionally, as exemplified in Patent Literature 3, there has been proposed a vibration proof / sound proof device in which cushioning materials are provided at a plurality of corresponding locations.
However, in the above-mentioned conventional device, the structure is complicated, and the work of attaching the cushioning material is inconvenient, so that it is not always practical.
[0005]
[Patent Document 1]
Japanese Utility Model Application Laid-Open No. 61-56469 (see FIG. 1)
[Patent Document 2]
JP-A-2-91875 (see FIG. 1)
[Patent Document 3]
JP-A-7-197731 (entire specification and drawings)
[0006]
[Problems to be solved by the invention]
In view of the above-mentioned conventional circumstances, the present invention eliminates the inconveniences and inconveniences, reduces the weight by simplifying the structure, increases the benefits in use, and enhances the sound absorbing effect at the time of opening and closing the automatic door to reduce noise. It is an object to provide a base plate for an automatic door which makes it possible.
[Means for Solving the Problems]
The base plate of the automatic door according to the present invention is a base plate main body having a horizontally long substantially L-shape or a substantially U-shape, and a drive device is attached thereto, and the door is hung openably and closably. In the base base plate described above, a cavity having a closed cross section is formed in the lower part of the base body over the entire length in the longitudinal direction, and the cavity is filled with a synthetic resin foam.
The base plate body can be applied to any type, such as a sliding door type, a rotating slide type, or a hinged door type, as long as it has a structure capable of opening and closing a door.
In addition, the base plate body is generally an extruded material made of metal such as aluminum, and in the case of a sliding door type, a rail is provided at a lower end portion of the base plate body via a rail support, and a door is provided on the rail. Although the structure is such that the door wheel attached to the upper end is made to travel, any of a form in which the rail is formed integrally with the rail support and a form in which the rail is retrofitted and fixed may be used. In the reinforcing structure, the former is preferably of the former type, and a cavity is formed in the rail support.
[0008]
The hollow portion enhances the rigidity of the base plate body by reinforcing the load resistance against bending and torsion by its closed cross-sectional structure, and is transmitted to the base plate main body by filling the hollow portion with a synthetic resin foam. The noise and vibration generated by the drive unit are absorbed and silenced by the synthetic resin foam.
[0009]
The synthetic resin foam may be filled by inserting a preformed foam or a block piece thereof into the cavity, but by injecting a foamable synthetic resin material into the cavity and subjecting it to a foaming treatment. It is preferable to fill the foamed material because it can ensure the integrity with the cavity.
As the synthetic resin foam, any of polyurethane foam, polystyrene foam, epoxy foam, polyvinyl chloride foam and the like may be used. In particular, a synthetic resin foam excellent in sound deadening and sound absorbing properties, for example, urethane foam and flexible polyurethane foam are preferable. .
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 illustrates a case of a sliding door type double door automatic door A. The base plate body 10 is fixedly disposed on the blind 1, and the doors 2, 2 are suspended from the base plate body 10 so that the doors 2 and 2 can be opened and closed to form the automatic door A.
That is, the base plate body 10 is disposed over substantially the entire width of the blind 1, on which the drive device 3 including the engine (motor and reduction gear) 4, the pulleys 5, 5, the belt 6, etc. is mounted, and the controller 7 is mounted. And a door 11 provided on an upper end of the door 2, 2 is movably mounted on a rail 11 formed at a lower end of the base plate body 10, and the door 2, 2 is gripped by a belt. This is a well-known structure in which the doors 2 and 2 are hung openably and closably by being connected to the belt 6 via a belt 9.
In this automatic door A, the belt 6 is rotated by the driving of the engine 4 controlled by the controller 7, and the doors 2, 2 are pulled in the relative direction through the belt grips 9, 9, thereby causing the door wheels 8, 8 to move. Opening and closing operation is performed while traveling on the rail 11.
[0011]
The details of the base plate body 10 will be described with reference to FIG.
The base plate body 10 is an extruded shape member made of aluminum, and the cross-sectional shape thereof is formed integrally with the rail 11 via a rail support 12 projecting forward at a lower end portion of a vertical back plate portion 10a. It is a long angle material having a substantially L shape.
The base plate body 10 has its back plate 10a joined to the blind 1 and fixed by fixing means, and the driving device 3 and the controller 7 are mounted on the entire surface of the back plate 10a as described above ( The door wheel 8 of the door 2 is hung on the rail 11 so that it can run.
Note that reference numeral 1a in FIG. 2 denotes a blind cover omitted in FIG.
[0012]
The base plate body 10 has a bottom plate 10b formed with a front end edge inclined upward and a thick rail base 11a integrally formed at the end thereof, and the rail 11 is integrally connected to the base 11a. Is formed.
In addition, the base plate body 10 integrally connects the cover plate 13 in a diagonally oblique manner from the lower portion of the back plate portion 10a to the rail base portion 11a. A rail support 12 surrounded by a lower portion of the plate portion 10a, a bottom plate portion 10b, and a cover plate 13 is formed.
[0013]
That is, the rail support 12 has a closed cross-sectional shape, has a hollow portion 12a formed therein, and supports the load applied to the rail 11 formed at the tip.
The hollow 12a of the rail support 12 is filled with a synthetic resin foam 14.
The synthetic resin foam 14 is filled by, for example, injecting an appropriate amount of a soft polyurethane foam together with an additive into the cavity 12a and subjecting the foam to a chemical foaming process such as heating.
[0014]
The cover plate 13 constituting the hollow portion 12a has a vertical wall 15 erected upward in the middle of the cover plate 13 and a protruding strip 16 integrally formed forward from the upper end edge. A concave strip portion 17 having the cover plate 13 as a bottom side is formed between the protrusion strip 16 and the projection strip 16.
A bundle of various electric wirings 18 for connecting the engine 4 and the controller 7 of the driving device 3 is accommodated in the recess 17, and the vertical wall 15 is provided on the upper surface of the recess 17. The elastic piece 19 made of a synthetic resin is detachably attached to the projection piece 16 and the projection piece 16. The elastic pieces 19 are arranged at appropriate intervals in the longitudinal direction of the concave strips 17 and press the upper side of the electric wirings 18.
[0015]
Thus, according to the automatic door A, since the base plate body 10 has a closed cross-sectional structure in which the rail support 12 is formed with the hollow portion 12a, the load resistance to bending and torsion of the rail support 12 is reduced. The reinforcement of the base plate body 10 is reinforced, and deformation such as a twisting phenomenon can be prevented even if a load is applied to the door 2 suspended via the rail 11 by the rail support 12.
Further, since the synthetic resin foam 14 is filled in the hollow portion 12a of the rail support 12, an operating sound such as a sliding noise of the door roller 8, a beat sound of the engine 4, a gear sound, etc., is generated in the synthetic resin foam 14. Absorbed.
[0016]
Next, FIGS. 3 and 4 show another embodiment of the present invention, specifically, a modified example of the hollow portion of the base plate body 10. FIG.
3, the upper end position of the cover plate 23 formed at the lower end portion of the base plate main body 20 is arranged at the lower position, thereby reducing the volume of the hollow portion 22a formed in the rail support 22. A large height of the elastic piece 29 can be ensured, and the wiring accommodation volume of the concave streak 27 is increased.
[0017]
The base plate body 30 in FIG. 4 also has a horizontal surface 33a formed on the cover plate 33 so as to form a concave ridge 37 on the surface 33a, whereby the hollow portion 32a formed in the rail support 32 is formed. Although the volume is reduced, the capacity of the recess 37 to accommodate the wiring is increased.
[0018]
Thus, also in the base plate bodies 20 and 30, the rail supports 22 and 32 are formed with the hollow portions 22a and 32a, and the hollow portions are filled with the synthetic resin foam 14, so that the above-described structure is achieved. As in the case of the base plate body 10, the rigidity of the base plate bodies 20 and 30 can be increased to prevent deformation due to the hanging of the door 2, and at the same time, generation of noise such as operation noise accompanying the opening / closing operation of the door 2 can be reduced. Can be prevented.
[0019]
In the above-described embodiment, the case where the shape of the base plate body 10 is substantially L-shaped has been described, but the top plate portion may be integrally molded at the upper end thereof to have a substantially U-shape. It is.
Further, in the above-described embodiment, the double-door type sliding door has been described. However, the same applies to a single-swing type sliding door and a rotary sliding type provided with a guide rail. Is also applicable to the case of a hinged door type which is integrally attached to the base plate main body, because the rigidity of the base plate main body is increased and the same function is achieved for noise reduction by absorbing the operation sound of the engine.
[0020]
【The invention's effect】
According to the present invention, since the hollow portion having the closed cross section is formed over the entire length in the longitudinal direction at the lower portion of the base plate main body, the rigidity of the base plate main body is enhanced by the closed cross section structure, and the door is hung openably and closably. The amount of deformation due to bending and torsion in the state is reduced.
Therefore, it is possible to provide a high-strength base plate, and furthermore, it is possible to reduce the plate thickness of the plate body, and to improve the usability such as transport and handling by reducing the weight and to reduce the manufacturing cost. It can be cheap.
In addition, since the synthetic resin foam is filled in the hollow portion, it is possible to provide a base plate excellent in a silent function of an automatic door by absorbing an operation sound or the like accompanying an opening / closing operation of a suspended door. .
[0021]
In particular, when the automatic door is a sliding door type base plate main body provided with a rail for suspending the door, the hollow portion is formed in the rail support to improve the strength of the portion, simplify the structure, and reduce noise. A base plate excellent in function can be provided.
[Brief description of the drawings]
FIG. 1 is a front view illustrating the outline of an automatic door according to the present invention.
FIG. 2 is an enlarged sectional view taken along line (2)-(2) in FIG.
FIG. 3 is an enlarged sectional view showing another embodiment showing a main part of the present invention.
FIG. 4 is an enlarged sectional view showing still another embodiment showing a main part of the present invention.
[Explanation of symbols]
A: Automatic door 1: blind 2: door 3: drive device 10: base plate body 11: rail 12: rail support 12a: cavity 13: cover plate 14: synthetic resin foam 20: base plate body 22: rail Support 22a: Cavity 23: Cover plate 30: Base plate body 32: Rail support 32a: Cavity 33: Cover plate

Claims (2)

A base plate main body having a horizontally long substantially L-shaped or substantially U-shaped base plate, wherein a drive device is attached thereto and a base plate of an automatic door for hanging a door so that the door can be opened and closed. A base plate for an automatic door, wherein a cavity having a closed cross section is formed over the entire length in the longitudinal direction, and the cavity is filled with a synthetic resin foam. 2. The base plate body according to claim 1, wherein the base body is an extruded member, a rail is integrally formed at a lower end portion thereof via a rail support, and a cavity is formed in the rail support. Base plate for automatic door.

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