JP4446365B2 - Fully-closed door holding device for automatic doors - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door fully-closed holding device for an automatic door, and more particularly to a device for holding the closed state in a state in which the door is fully closed by a driving device.
[0002]
[Prior art]
In a conventional sliding door type automatic door, if the energization of the motor of the door driving device is turned off when the door reaches the fully closed position, the driving force in the door closing direction is lost. ) And the elasticity of the rubber provided at the door tip, the door returns to the open side, or a gap is created between the door tip and the vertical frame due to the poor installation of the vertical frame. As a result, the airtightness is deteriorated, and not only the air conditioning effect is lowered, but also the appearance is impaired.
For this reason, as a countermeasure for eliminating the above inconvenience, a so-called “always-pressing” operation is performed in which energization is continued in the electric motor of the drive device even when the door is in a fully closed state and the door is given a driving force on the closing side.
[0003]
[Problems to be solved by the invention]
However, according to the fully-closed holding operation by the “always press”, the durability of the drive device is affected by the temperature rise of the motor, and the power consumption is increased, resulting in a problem in energy measures.
In view of the above-described conventional circumstances, the present invention eliminates the disadvantages and problems, suppresses the temperature rise of the drive device to increase durability, saves energy consumption, and simplifies the structure to make the door fully closed at a low cost. It is intended to provide a holding device.
[0004]
[Means for Solving the Problems]
Such a door fully-closed holding device of the present invention is configured to hold the fully-closed state of the door by the magnetic force of a permanent magnet that does not consume power.
That is, the automatic door opening and closing method applied in the present invention includes a double sliding door method and a single sliding door method. In the case of the double sliding door method, a thin plate stay is provided on the upper side of the upper end of both doors. A door is formed by projecting toward the other side and curved in a direction opposite to the free end of each thin plate stay, and permanent magnets are attached to the front surface of one stay and the rear surface of the other stay, respectively. Immediately before the closing operation is completed, the both stays slide while approaching, and when the door is fully closed, both permanent magnets overlap with each other between the stays, and the stays are attracted and connected by magnetic force. (Claim 1). In addition, in the case of a single sliding door system, a thin plate stay is projected to the vertical frame side in a range that does not protrude from the upper collar at the top of the door upper side of the door, and the vertical frame is directed toward the stay side. projecting the stay protruding Te, to form a relief portion that is curved into opposite directions on the free end of the respective thin sheet stays attached to one front and the other, respectively the permanent magnets on the back surface of the stay of the stay, the door Immediately before the closing operation is completed, the both stays slide while approaching, and when the door is fully closed, both permanent magnets overlap with each other between the stays, and the stays are attracted and connected by magnetic force. (Claim 2).
[0006]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG.
In FIG. 1, reference numerals 1 and 1 denote vertical frames provided on both sides of the entrance / exit, and a gate-like entrance / exit frame is formed by disposing a mesh 2 on the upper surface, and a door portion is formed at the opening of the frame. 3 is installed so that opening and closing is possible. In addition, the door part 3 in a figure illustrates the case of the double sliding door system comprised by door 3a, 3b.
The above-described seamless 2 is provided with a driving mechanism 4 and a control unit 5, a hanger rail 6 is laid on the lower end edge, and a hanger (suspension member) 7 a attached to the upper side of the doors 3 a and 3 b on the rail 6. The suspension doors 8a and 8b of 7b are suspended so that they can roll.
The drive mechanism 4 includes a motor 9 exemplified as a power source, a speed reducer 10, a drive pulley 11, a driven pulley 12, a transmission belt 13, and the like. The belt 13 is connected to the hangers 7a, 7b of the doors 3a, 3b or other When the connecting member is connected and the motor 9 is driven, the doors 3a and 3b are moved in the opposite directions to open and close the door portion 3.
[0007]
2 and 3 show details of the present invention.
Each of the doors 3a, 3b is provided with two hangers 7a, 7a, 7b, 7b on the upper flanges 14a, 14b (see FIG. 1). Each of the thin plate stays 20a and 20b is attached with bolts or screws.
The stays 20a and 20b are long and thin plates made of metal, preferably a spring material made of stainless steel. Each end of the stays 20a and 20b is attached to the hangers 7a and 7b and arranged horizontally. Extending toward the other stays 7b and 7a, each end is slightly projected from the upper flanges 14a and 14b of the doors 3a and 3b.
[0008]
The free ends of the stays 20a and 20b form escape portions 21a and 21b that are slightly curved in the opposite direction, that is, one is frontward and the other is rearward (see FIG. 2 (2)), and the doors 3a and 3b. The stays 20a and 20b are prevented from coming into contact with each other during the closing movement so that the stays 20a and 20b slide smoothly.
Permanent magnets 22a and 22b are fixedly attached to the respective free ends of the stays 20a and 20b by adhesion or the like on the opposite side surfaces, specifically, the front surface of the stay 20a and the rear surface of the stay 20b.
The permanent magnets 22a and 22b are arranged at positions that overlap each other when the doors 3a and 3b reach the fully closed position (see FIG. 3).
[0009]
Thus, in the automatic door, the doors 3a and 3b are opened and closed by driving the motor 9 controlled by the control unit 5, but the stays 20a and 20b are in sliding contact immediately before the door closing operation is finished. Permanent magnets 22a and 22b approach sequentially.
When the doors 3a and 3b reach the door closing operation completion position and the door is fully closed, the magnets 22a and 22b overlap with each other with the stays 20a and 20b interposed therebetween. Adsorbed and connected (see FIG. 3).
Therefore, even if the drive of the motor 9 of the drive mechanism 4 is stopped when the door is fully closed, the door fully closed state is maintained by the adsorption connection of the stays 20a and 20b by the magnetic force of the permanent magnets 22a and 22b. The
When the doors 3a and 3b are opened next, the motor 9 pulls both stays 20a and 20b with a driving force far stronger than the holding force by the magnetic force of the permanent magnets 22a and 22b. Has little effect on operation.
[0010]
Next, FIG.4 and FIG.5 shows the case where an automatic door is a single sliding door system.
In the case of this method, a stay 120b is attached to a door-side hanger 107 disposed on the upper ridge 114 of the door 103, while a stay 120a is opposed to the stay 120b in the vertical frame 101 of the doorway. It arranges in.
Except that the free end of the stay 120b does not protrude from the front end of the upper flange 114, the stays 120a and 120b are provided with relief portions 121a and 121b, respectively, and the permanent magnets 122a and 122b are provided. , 20b.
[0011]
Similarly, in the case of this sliding door system, when the door 103 reaches the door closing operation complete position, the magnets 122a and 122b overlap with the stays 120a and 120b therebetween. Both stays 120a and 120b are connected by suction (see FIG. 5), and the driving of the motor 9 in this state can be stopped.
[0013]
【The invention's effect】
According to the present invention, the stay is attracted and connected by the magnetic force of the permanent magnet in the fully closed state of the door so that the fully closed state is maintained. Therefore, the durability of the drive device can be improved.
In addition, since the motor is not energized when the door is fully closed, it is possible to reduce power consumption and energy consumption.
[0014]
Furthermore, the device according to the present invention has a simple structure including the stay and a permanent magnet, and the stay is attached to a suspension member (hanger) of the door. There is no need to attach it, and the structure can be simplified and provided at low cost.
[Brief description of the drawings]
FIG. 1 is a front view showing an installation configuration of an automatic door.
FIG. 2 shows details of the device of the present invention, in which (1) is an enlarged front view of the main part, and (2) is a plan view of the main part.
FIG. 3 shows a fully-closed holding state of the apparatus, wherein (1) is a front view and (2) is a plan view.
FIG. 4 shows another embodiment of the device of the present invention, in which (1) is an enlarged front view of the main part, and (2) is a plan view of the main part.
FIG. 5 is a front view showing a fully closed holding state of the apparatus.
[Explanation of symbols]
3a, 3b: Door 14a, 14b: Upper bar 7a, 7b: Hanger (suspension member) 20a, 20b: Stay 22a, 22b: Permanent magnet 103: Door 114: Upper bar 107: Hanger (suspension member)
120a, 120b: stay 122a, 122b: permanent magnet

Claims (2)

In a sliding door type automatic door, a thin plate stay is projected to the other side of the upper end of the upper side of both doors, and a relief portion is formed that is curved in a direction opposite to the free end of each thin plate stay. and, while the rear surface of the front and the other of the stay of the stay respectively fitted with a permanent magnet, the two stays just before door closing operation is completed approaches while sliding, the door is fully closed is both permanent magnets both A door fully-closed holding device for an automatic door, characterized in that the stays overlap with each other so that both stays are attracted and connected by magnetic force. In the automatic door of the sliding door type, a thin plate stay is projected to the vertical frame side in the range that does not protrude from the upper collar on the door side of the upper side of the door, and the vertical frame protrudes toward the stay side a stay which is projected to form a relief portion that is curved into opposite directions on the free end of the respective thin sheet stays attached to one front and the other, respectively the permanent magnets on the back surface of the stay of the stay, the door closing operation The automatic door is characterized in that the two stays approach each other while sliding, just before the end of the door, and when the door is fully closed, the two permanent magnets overlap with each other between the stays, so that both stays are attracted and connected by magnetic force. Fully closed door holding device.

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