JP2003106047A - Automatic-door opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic-door opening/closing device which can be mounted on a rightward and leftward opening door with a door closer in such a manner as to be turned upside down, and whose vertical dimension can be made small, and which has an excellent appearance. SOLUTION: This automatic-door opening/closing device 3 is mounted on the door which is equipped with the door closer 2 comprising: a main body 22 which is provided with a rotating shaft 25 having both ends exposed in upper and lower positions; a door-side arm whose base end is coupled to one end of the rotating shaft 25 so that the door-side arm can be integrally rotated; and a fixing-side arm whose base end is rotatably coupled to a fixing member and whose leading end is rotatably coupled to a leading end of the door-side arm. The device 3 is composed of a housing 30 which is formed in a flat shape long from side to side and mounted under a casing 21 in a state of contact with the casing 21, a drive shaft 4 whose upper end is provided with a coupling 12 to a lower end of the rotating shaft 25, a motor 6 and a speed reducing mechanism 60 between an output shaft of the motor 6 and the drive shaft 4, and a circuit 7 for controlling energization to the motor 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door opening / closing device that utilizes a door closer mounted between a door and a fixed member such as a door frame.

[0002]

2. Description of the Related Art Doors that open and close openings such as doorways are
Either the left or right side edge of the door is hingedly connected to the door frame or the wall (fixing member) and is rotatably attached. Between the door and the fixing member, a door closer for automatically closing the opened door is attached to the upper portion of the door or the like.

The door closer has a main body having a rotating shaft whose upper and lower ends are projected, a door side arm which is connected to an upper end of the rotating shaft and rotates integrally, and one end of the door closer. The stationary arm is rotatably connected to the tip and the other end is rotatably connected to the fixing member. The main body has a horizontally long casing in which a spring that damps the rotation speed by hydraulic pressure on a rotation shaft and that stores potential energy in the door closing direction in conjunction with opening the door is installed. The casing is
Fastened from the fulcrum side of the upper part of the door, the other end of the fixed side arm is connected to a bracket fastened to a fixed member near the door to rotate in the horizontal plane.

[0004]

SUMMARY OF THE INVENTION
Japanese Patent Laid-Open No. 000-96915 proposes an automatic door opening / closing device that can be easily attached to a door with a door closer. In this automatic door opening / closing device, the door is opened / closed by a motor having an output shaft concentric with the rotating shaft under the door closer. For this reason, there is a problem in that the protrusions on the lower side become large, and the appearance is deteriorated and becomes an obstacle.

An object of the present invention is to use a door closer effectively, to easily mount it on a conventional door with a door closer, and to reduce the size of the upper and lower sides, and to reduce the appearance and the protrusion to the lower side. The equipment is provided.

The object of the invention described in claim 2 is a combination of parts having a simple structure, and means for limiting the free rotation range of the drive shaft with respect to the outer shaft and the rotation range of the fan-shaped gear fixed to the outer shaft. (EN) Provided is an automatic door opening / closing device which can be formed with a limiting mechanism and can reduce costs and failures.

An object of the invention according to claim 3 is to provide an automatic door opening / closing device in which the same automatic door opening / closing device can be mounted on the left-opening door and the right-opening door in a good appearance. An object of the invention described in claim 4 is to provide an automatic door opening / closing device which has a simple structure and can be changed to manual opening / closing in which only the door closer operates in the event of a power failure.

[0008]

According to the present invention, a rotating shaft whose both ends are vertically exposed is provided in a casing which is fastened to a door, and a biasing / attenuating means for the rotating shaft is provided by a spring and hydraulic pressure. A main body having a built-in body, and a door-side arm that has a base end connected to one end of the rotating shaft and integrally rotates.
The base end is rotatably connected to the fixed member, and the front end is composed of a fixed arm rotatably connected to the front end of the door side arm, and potential energy in the door closing direction is accumulated as the door opens. An automatic door opening / closing device for a door having a door closer, wherein a housing mounted on the casing in the lower or upper vicinity thereof and a coupling to the lower end or the upper end of the rotating shaft at the upper end or the lower end. The drive shaft is provided, a motor, a transmission mechanism between the output shaft of the motor and the drive shaft, and an energization control circuit for the motor. The energization control for the motor rotates the rotating shaft. It is characterized by moving to open and close the door.

[0009]

According to the present invention, couplings are provided above and below the drive shaft and above and below the pivot shaft of the door closer. Therefore, one automatic door opening / closing device can be shared by the left-opening door and the right-opening door.

According to the second aspect of the invention, the transmission mechanism comprises:
An outer shaft externally fitted to the drive shaft, a free rotation range limiting means of the drive shaft provided between the outer shaft and the drive shaft, a fan-shaped gear fixed to the outer shaft, and a fan-shaped gear of the fan-shaped gear. It is characterized by comprising a rotation range limiting mechanism and a reduction mechanism arranged between the output shaft of the motor and the fan gear.

In this structure, the drive shaft connected to the rotary shaft is arranged in the horizontally long housing on the lower surface of the casing of the door closer, and the drive shaft is transmitted by the motor and the gear train provided on the side. Therefore, the structure of the free rotation range limiting means of the drive shaft is simple and easy to process, and the failure does not easily occur.

According to the third aspect of the present invention, the housing has a horizontally long box shape having substantially the same width as that of the casing. By turning the housing upside down, the left opening (hand) door and the right opening door are opened. Can be installed on both sides. With this configuration, the housing can be formed flat, which has an excellent appearance and high safety.

According to the fourth aspect of the present invention, when the automatic door opening / closing device is moved downward during a power failure, the coupling comes off and the door closer operates only. Thereby, in the event of a power failure or a failure of the automatic door opening / closing device, it can be easily returned to the manual mode.

[0014]

1 shows a front surface of a door, a left side of which is rotatably connected to a door frame 10 through a hinge, and a door 1 which opens rearward is fitted therein. A door closer 2 is mounted between the left side (hinge side) of the upper portion of the door 1 and the upper member 11 of the door frame 10. Below the door closer 2, the automatic door opening / closing device 3 of the present invention is mounted in close proximity. A coupling 12 connects the automatic door opening / closing device 3 and the door closer 2.

The door closer 2 has a known structure, and a main body 22 having a horizontally long and flat box-shaped casing 21 is horizontally fastened to the upper portion of the door 1 on the hinge side by four screws 1A. A rotary shaft 25 projecting from the upper and lower end portions 23 and 24 is provided slightly above the center of the casing 21, and the upper and lower end portions 23 and 24 have coupling shafts 1 and 2, respectively.
The quadrangular convex portions 13 and 14 which form 2 are projected. With this structure, the door closer 2 of the same model can be mounted upside down on the left-opening door and the right-opening door.

The rotating shaft 25 damps the opening / closing operation of the door 1 by means of a spring and hydraulic damping means (neither shown) provided in the casing 21, and
The spring is compressed with the opening operation, and the spring load of the spring accumulates the urging force (potential energy) in the direction in which the door 1 is closed.

The base end 2A of the door side arm 26 is fitted and connected to the quadrangular convex portion 13 at the upper end 23 of the turning shaft 25, and the door side arm 26 is integrated with the turning shaft 25. It is designed to rotate. A bracket 27 is fastened to the upper member 11 of the door frame 10, and the base end 2B of the fixed arm 28 is rotatably connected to the bracket 27 in a plane. The tip of the door side arm 26 and the tip of the fixed side arm 28 are rotatably connected by a fulcrum 29.

As shown in FIGS. 2 to 4, the automatic door opening / closing device 3 is provided with a horizontally long and flat box-shaped housing 30 having substantially the same width as the casing 21. In this example,
The housing 30 is connected with the door closer 2 at the same time
It has a rectangular base 31 that is fastened to the door 1 with a screw 1A of a book. The casing 21 is fastened to the door 1 with four screws 1A on the upper half of the base 31, and the housing 30 is fastened to the door 1 with four screws 1B (shown in FIG. 10) on the lower half of the base 31.
1 is fastened to the surface.

The housing 30 is composed of a series of curved front and left and right side plates 32, a top plate 33 and a bottom plate 34, which are flat plates, and has a rear open structure. Circular holes 2C and 2D are formed in the top plate 33 and the bottom plate 34 at positions corresponding to the rotary shaft 25 on the slightly left side of the center of the housing 30, and both end faces 4A and 4B are connected to the top plate 33 and the bottom plate 3.
The drive shaft 4 is mounted vertically in a state of being exposed from 4.

On both end surfaces 4A, 4B, square convex portions 13, 1 are provided.
The square recesses 15 and 16 that fit in the four are provided to form the coupling 12. As a result, the automatic door opening / closing device 3 reverses the housing 30 of the type mounted on the right-opening door shown in FIG. 1 upside down and closes the door closer 2 of the left-opening door shown in FIG. Has been)
It can be mounted below the body 22 of the.

As shown in FIG. 6, the drive shaft 4 is rotatably fitted in a cylindrical outer shaft 5 having a key groove 51 in the upper portion. As shown in FIG. 7, the drive shaft 4 has a cutout portion 41 slightly below the middle. The missing portion 41 has a small cross-sectional area of 5 including an arcuate bottom surface 42, parallel side surfaces 43 and 44, and isosceles right triangle-shaped top surfaces 45 and 46.
They are connected by prismatic portions 47.

The lower part of the outer shaft 5 is provided with a manual rotation range of the door 1 (a relative rotation range between the drive shaft 4 and the outer shaft 5).
A free rotation range restricting mechanism 40 that restricts each time is provided. The manually rotatable free rotation range regulating mechanism 40 includes a pentagonal columnar portion 47 and a strip plate 52 as a stopper. The strip 52 is orthogonal to the axis of the outer shaft 5 (tangential direction).
Slit 5 provided at a position eccentric to the shaft center
It is inserted through S, 5S and fixed to the outer shaft 5 with screws 53.

On the upper part of the outer shaft 5, an automatic turning range of the outer shaft 5 which is a turning range of the door 1 by an electric motor is set to about 90.
An automatic rotation range regulation mechanism 50 that regulates each time is provided. The automatic rotation range regulation mechanism 50 is composed of a quadrant-shaped fan gear 54 fixed to the outer shaft 5 by a key inserted in the key groove 51, and a base 31 of the housing 30. The fan-shaped gear 54 has one side 55 and the other side 56 orthogonal to each other. The door is closed when the one side 55 contacts the base 31, and the door is closed when the other side 56 contacts the base 31. Is open 90 degrees.

On the side of the outer shaft 5 of the housing 30 (the lower part on the right side in FIG. 2), a motor 6 is installed with the output shaft 61 protruding vertically upward. An output gear 62 is connected to the upper end of the output shaft 61. A reduction mechanism 60 is provided between the output gear 62 and the fan gear 54 (outer shaft 5). The reduction gear mechanism 60 is composed of a reduction gear train in which a large gear and a small gear are attached to the support shafts 63 to 65, which are installed between the outer shaft 5 and the motor 6 at the same level as the outer shaft 5.

As in this embodiment, the free rotation range regulating mechanism 40 is arranged by inserting it into the pentagonal columnar portion 47 provided on the drive shaft 4, the slits 5S, 5S, and the slits 5S, 5S on the outer shaft 5. Since the automatic rotation range regulating mechanism 50 is composed of the band plate 52 and the fan-shaped gear 54 and the base 31, the free rotation range regulating mechanism 40 is composed of a combination of simple and easily machined parts.
Can be formed, and the processing cost and the occurrence of failure can be reduced. Further, the outer shaft 5, the motor 6, and the speed reduction mechanism 60 are arranged side by side, so that the automatic door opening / closing device 3
It is possible to reduce the vertical dimension of the door closer, and it is possible to minimize the downward protrusion when the door closer 2 is mounted below the main body 22.

The fan-shaped gear 54 is rotated by the rotation of the motor 6, and as shown in FIG.
Alternatively, the other side edge 56 rotates within a range of about 90 degrees in which the other side edge 56 contacts the base 31 of the housing 30. As for the drive shaft 4 and the outer shaft 5, the apex P shown in (c) of FIG. 8 comes into contact with the strip plate 52 from the position where one side surface 43 shown in (b) of FIG. 8 comes into contact with the strip plate 52. After the position, the other side surface 44 shown in FIG. 8D can be rotated 180 degrees to the position where the other side surface 44 abuts on the strip plate 52.

The opening / closing operation of the door 1 by the automatic door opening / closing device 3 will be described. An energization control circuit 7 including a door opening switch 71 and a door closing switch 72 and a commercial power source is connected to the motor 6. In the state in which the door is closed, the outer shaft 5 is at the position shown by the solid line in FIG. 8 (a) in which one side 55 of the fan gear 54 is in contact with the base 31, and the door 1 is manually operated by 180 °. Can be rotated once.

When the door open switch 71 is pressed, the motor 6
Is rotated and the fan gear 54 is rotated rightward via the output gear 62 and the speed reduction mechanism 60, and is indicated by a chain line 90 in FIG.
The other side 56 comes into contact with the base 31 and stops. The outer shaft 5 is integrally rotated by the rotation of the fan gear 54, and the drive shaft 4 is interlocked with the rotation of the outer shaft 5 and is rotated to a position rotated by 90 degrees indicated by a chain line in (a) of FIG. Move.

The rotating shaft 25 connected to the drive shaft 4 is rotated by the coupling 12, and the door side arm 26 is rotated by the rotating shaft 25.
Since it rotates together with the fixed arm 28, the fixed arm 28 also rotates in conjunction with it, and the door 1 opens 90 degrees. In this state, the door 1 can be further manually rotated in the opening direction.

On the rotary shaft 25, potential energy for closing the door 1 is accumulated in a spring inside the door closer 2 as the rotary shaft 25 rotates. By adjusting the amount of electricity supplied to the motor 6, the opening degree of the door 1 can be maintained at 90 degrees, for example, in balance with the torque of the door closer 2 in the closing direction. The speed reduction mechanism 6
It is also possible to use a reverse drive preventing means such as a bevel gear or a worm gear in the zero position to stop the power supply to the motor 6.

When the door 1 is closed and the door closing switch 72 is pressed, the motor 6 rotates in the reverse direction. Door closer 2
When the closing speed by (or manually) is lower than the closing speed by the motor 6, the door is closed at the speed set by the door closer 2 without receiving the assistance by the motor 6.

On the contrary, when the door closing speed by the door closer 2 (or manually) is higher than the door closing speed by the motor 6, the door 1 is closed while accelerating the motor 6 by the restoring force of the spring compressed in the door closer 2. . Door 1
The door 1 is closed at a door closing speed slower than the door closing speed damped by the damper in the door closer 2. In either case, the door closing speed is kept low and safety is maintained.

The start switch of the motor 6 may be a remote control device using infrared rays or ultrasonic waves, or may be a sensor which operates by detecting a person passing through or approaching a door. Also, a sensor that detects that the door handle is touched can be used.

FIG. 9 shows a second embodiment. In this embodiment, the screw hole 1C for fastening the base 31 to the door 1 with the screw 1A is a long hole that is vertically long. This makes screw 1
The coupling 12 can be released by loosening A and displacing the automatic door opening / closing device 3 downward and tightening the screw 1A again. When the automatic door opening / closing device 3 cannot be operated due to a power failure or the automatic door opening / closing device 3 fails, the door can be easily opened / closed only by the door closer 2.

FIG. 10 shows a third embodiment. In this embodiment, the screw holes 1D of the four screws 1B are elongated vertically. This loosens the screw 1B and displaces the automatic door opening / closing device 3 downward, so that the coupling 12
Can be disconnected.

11 (a) and 11 (b) show modes of the door control means 80 and the door 1 as the fourth embodiment of the present invention. In the fourth embodiment, the opening / closing control of the door 1 is performed based on the door control means 80 from the viewpoint of safety. Start switch (not shown)
Is sent to the signal identifying unit 76, the power supply 70 is closed and the signal identifying unit 76 sends an instruction signal to the energization control unit 77 in response to the closing signal, the half-open signal, and the fully-open signal for the door 1. In the central processing unit 75, regardless of whether it is a close signal, a half open signal or a full open signal, the close signal is always preferentially applied and the motor 6 is rotated so as to rotate the door 1 to the closed position (origin reference position). Energize. When the closed position detection unit 73 detects that the door 1 is in the closed position, a detection signal is sent to the energization control unit 77, and the central processing unit 75 controls the motor 6 according to the closed signal, the half open signal, and the full open signal.

In this case, since it has been detected that the door 1 is in the closed position, the closing signal is set to the door closing mode, the motor 6 is de-energized, and the closing operation of the door 1 is completed. After that, the operation of the door 1 in the opening direction is performed according to the operation signal, and when the door is in the half-open signal, the motor 6 is energized in the door half-open mode.
From the closed position by an angle of 45 degrees. In response to the fully open signal, the motor 6 is energized to rotate the door 1 by 90 degrees from the closed position in the door fully open mode.

When the closed position detector 73 does not detect that the door 1 is in the closed position, it sends a no-detection signal to the overcurrent detector 74 to detect the presence or absence of an overcurrent to the motor 6. If no overcurrent is detected, the process returns to the signal identifying unit 76 to identify the closed signal, the half-open signal, and the fully-open signal, and the same procedure as above is repeated. When the overcurrent detection unit 74 detects an overcurrent to the motor 6, the power source 70 is turned off to stop the motor 6 when an abnormality such as a malfunction occurs. After that, in order to restart the opening / closing operation of the door 1, the power source 70 needs to be turned on again.

In the fourth embodiment, the motor 6 is controlled with the closed position as the origin reference position after confirming that the door 1 is in the closed position regardless of whether the signal is a closed signal, a half open signal or a fully open signal. . Therefore, the door 1 is always controlled on the safe side with respect to the user and the automatic door opening / closing device, and the motor 6 is not energized in the half-open or full-open direction from the state in which the door 1 is slightly opened. . This allows
The door 1 is not forcibly driven in the opening direction by the motor 6, and safety in use is ensured.

[Brief description of drawings]

FIG. 1 is a front view of an automatic door opening / closing device and a door closer.

FIG. 2 is a front view of a door closer.

FIG. 3 is a plan view of a door closer.

FIG. 4 is a right side view of the door closer.

FIG. 5 is a front view of a left-opening door equipped with an automatic door opening / closing device.

FIG. 6 is a perspective view of an assembly of a drive shaft and an outer shaft.

FIG. 7 is an assembly diagram of a drive shaft and an outer shaft.

FIG. 8 is a plan view of an assembly of a drive shaft and an outer shaft for explaining the operation.

FIG. 9 is a front view of the second embodiment of the automatic door opening / closing device.

FIG. 10 is a front view of a third embodiment of the automatic door opening / closing device.

FIG. 11A is a block diagram relating to a door control means of the fourth embodiment, and FIG. 11B is a schematic diagram showing a mode of a door.

[Explanation of symbols]

1 door 12 Coupling Two door closer 21 casing 22 Main body of door closer 25 rotation axis 26 Door arm 28 Fixed arm 3 Automatic door opening and closing device 30 housing 31 Foundation 4 drive shaft 40 Free rotation range control mechanism 5 outer shaft 50 Automatic rotation range control mechanism 52 strip 54 fan gear 6 motor 60 reduction mechanism 61 Output shaft 7 energization control circuit

Claims (4)

[Claims] 1. A main body in which a casing which is fastened to a door is provided with a rotating shaft whose both ends are vertically exposed, and in which a biasing / attenuating means for the rotating shaft by a spring and hydraulic pressure is incorporated, and a base. A door-side arm whose end is connected to one end of the rotating shaft and integrally rotates, a base end of which is rotatably connected to a fixed member, and a tip of which is rotatably connected to the tip of the door-side arm. An automatic door opening and closing device for a door, which comprises a fixed arm and which is provided with a door closer that accumulates potential energy in a door closing direction when the door is opened. A housing to be mounted, a drive shaft having an upper end or a lower end provided with a coupling to the lower end or the upper end of the rotating shaft, a motor, and a transmission mechanism between the output shaft of the motor and the drive shaft, Energizing the motor It consists of a circuit, automatic door openers, characterized in that for opening and closing the door by rotating the rotating shaft by energization control to the motor. 2. The automatic door opening / closing device according to claim 1, wherein the transmission mechanism includes an outer shaft externally fitted to the drive shaft, and the drive shaft provided between the outer shaft and the drive shaft. Free rotation range limiting means, a fan-shaped gear fixed to the outer shaft, a rotation range limiting mechanism for the fan-shaped gear, and a deceleration arranged between the output shaft of the motor and the fan-shaped gear. An automatic door opening / closing device characterized by comprising a mechanism. 3. The automatic door opening / closing device according to claim 1, wherein the motor is attached to a side of the outer shaft in the housing, and the housing is horizontally long and has substantially the same width as the casing. An automatic door opening and closing device characterized by exhibiting a box shape. 4. The automatic door opening / closing device according to claim 1, further comprising a displacement mechanism capable of displacing a fixed position of the housing to a position where the coupling is released. Door opening and closing device.