JP3990604B2 - Automatic door opener - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic door opening and closing device using a door closer mounted between a door and a fixing member such as a door frame.
[0002]
[Prior art]
A door that opens and closes an opening such as an entrance is hinged to a door frame or a wall (fixing member) on either the left or right side of the door and is attached rotatably. Between the door and the fixing member, a door closer for automatically closing the opened door is mounted on the upper part of the door.
[0003]
The door closer includes a main body having a pivot shaft with both ends protruding vertically, a door-side arm connected to the upper end of the pivot shaft, and one end rotating to the tip of the door-side arm. A stationary arm that is movably coupled and has the other end pivotally coupled to the stationary member. The main body includes a spring in the horizontally long casing that attenuates the rotation speed by hydraulic pressure on the rotation shaft and accumulates potential energy in the door closing direction in conjunction with the opening of the door. The casing is fastened from the fulcrum side at the upper part of the door, and the fixed arm is connected to a bracket whose other end is fastened to a fixing member in the vicinity of the door and rotates in a horizontal plane.
[0004]
[Problems to be solved by the invention]
The present applicant has proposed an automatic door opening / closing device that can be easily mounted on a door with a door closer in Japanese Patent Laid-Open No. 2000-96915. This automatic door opening and closing device is configured to open and close the door with a motor having an output shaft concentric with the rotation shaft under the door closer. For this reason, the downward bulge becomes large, and there is a problem that the appearance deteriorates and gets in the way.
[0005]
The object of the present invention is to make effective use of a door closer so that it can be easily mounted on a conventional door with a door closer, the vertical dimension can be reduced, the appearance and downward bulge can be reduced , and the same automatic An object of the present invention is to provide an automatic door opening and closing device capable of fitting the door opening and closing device to the left and right doors .
[0006]
The object of the present invention is to provide a free rotation range limiting means for the drive shaft relative to the outer shaft, and a rotation range limiting mechanism for the fan-shaped gear fixed to the outer shaft. The present invention provides an automatic door opening and closing device that can reduce the cost and failure.
[0007]
The purpose of the invention described in 請 Motomeko 3, with a simple structure and working, only door closer, such as during a power failure is to provide an automatic door openers can be changed to manual opening and closing acting.
[0008]
[Means for Solving the Problems]
The present invention includes a main body in which a rotating shaft with both ends exposed vertically is provided in a casing fastened to a door, and a biasing / damping means for the rotating shaft by a spring and hydraulic pressure is incorporated, and a base end Is coupled to one end of the pivot shaft and integrally pivots, a base end is pivotally coupled to a fixed member, and a distal end is pivotally coupled to the distal end of the door side arm. An automatic door opening and closing device for a door provided with a door closer that accumulates potential energy in the closing direction as the door opens,
A housing mounted close to or below the casing; a drive shaft provided with a coupling to the lower end or upper end of the rotating shaft at the upper end or lower end; a motor, an output shaft of the motor, and the drive A transmission mechanism between the shaft and an energization control circuit for the motor, the motor being attached to a side of the drive shaft in the housing, the housing having substantially the same width as the casing It has a horizontally long box shape, and the door is opened and closed by turning the turning shaft by energization control to the motor.
[0009]
[Operation and effect of the invention]
In this invention, the coupling with the upper and lower sides of the rotating shaft of the door closer is provided above and below the drive shaft. For this reason, one automatic door opening and closing device can be shared by the left-opening door and the right-opening door. That is, the housing has a horizontally long box shape that is substantially the same width as the casing, and can be mounted on both the left-opening door and the right-opening door by turning the housing upside down. In this configuration, the housing can be formed flat, and the appearance is excellent and the safety is high.
[0010]
In the invention according to claim 2, the transmission mechanism includes an outer shaft that is externally fitted to the drive shaft, a free rotation range limiting means for the drive shaft provided between the outer shaft and the drive shaft, and an outer shaft. It comprises a fixed sector gear, a rotation range limiting mechanism for the sector gear, and a speed reduction mechanism arranged between the motor output shaft and the sector gear.
[0011]
In this configuration, a drive shaft connected to a rotation shaft is disposed on a horizontally long housing on the lower surface of the casing of the door closer, and is transmitted by a motor and a gear train provided on the side. For this reason, the structure of the means for limiting the free rotation range of the drive shaft is simple and easy to process, and failure is unlikely to occur.
[0013]
In the third aspect of the invention, when the automatic door opening / closing device is moved downward during a power failure , the coupling is released and only the door closer is operated, so that the manual opening / closing is restored. Thereby, it can return to manual easily at the time of a power failure or when an automatic door opening and closing device breaks down.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the front of the door, and the door 1 is pivotally connected to the door frame 10 via a hinge, and a door 1 that opens to the rear is fitted. 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 and closing device 3 of the present invention is attached in close proximity. The automatic door opening and closing device 3 and the door closer 2 are connected by a coupling 12.
[0015]
The door closer 2 has a known configuration, 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 pivot shaft 25 protruding from the upper and lower ends 23 and 24 is provided slightly from the hinge of the center of the casing 21, and the rectangular protrusions 13 and 14 constituting the coupling 12 are provided at the upper and lower ends 23 and 24. Is protruding. With this structure, the same type of door closer 2 can be mounted upside down on the left door and the right door.
[0016]
The rotating shaft 25 attenuates the opening and closing operation of the door 1 by a spring and a hydraulic damping means (both not shown) provided in the casing 21 and compresses the spring with the opening operation. The urging force (potential energy) in the direction in which the door 1 is closed by the spring load is accumulated.
[0017]
The base end 2A of the door side arm 26 is connected to the upper end portion 23 of the rotation shaft 25 by being fitted to the quadrangular convex portion 13, and the door side arm 26 rotates integrally with the rotation shaft 25. It is supposed to be. A bracket 27 is fastened to the upper member 11 of the door frame 10, and a base end 2 </ b> B of the fixed arm 28 is connected to the bracket 27 so as to be rotatable in a plane. The distal end of the door side arm 26 and the distal end of the fixed side arm 28 are rotatably connected by a fulcrum 29.
[0018]
As shown in FIGS. 2 to 4, the automatic door opening / closing device 3 includes a horizontally long and flat box-shaped housing 30 having substantially the same width as the casing 21. In this embodiment, the housing 30 has a rectangular base 31 that is fastened to the door 1 with four screws 1 </ b> A simultaneously with the fastening of the door closer 2. 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 connected to the surface of the base 31 with four screws 1B (shown in FIG. 10) on the lower half of the base 31. It is concluded to.
[0019]
The housing 30 includes 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 structure in which the back surface is open. Round holes 2C and 2D are formed in the top plate 33 and the bottom plate 34 at positions corresponding to the rotation shaft 25 slightly on the left side of the center of the housing 30, and both end surfaces 4A and 4B are exposed from the top plate 33 and the bottom plate 34. In this state, the drive shaft 4 is attached in the vertical direction.
[0020]
The both end surfaces 4A and 4B are provided with quadrangular concave portions 15 and 16 that fit into the quadrangular convex portions 13 and 14, and the coupling 12 is configured. As a result, the automatic door opening / closing device 3 turns the housing 30 of the type attached to the right opening door shown in FIG. 1 upside down and fastens to the door 1 of the left opening door shown in FIG. Can be mounted under the main body 22.
[0021]
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 part. As shown in FIG. 7, the drive shaft 4 is formed with a missing portion 41 slightly below the middle. The missing portion 41 is connected by a pentagonal columnar portion 47 having a small cross-sectional area including a bottom surface 42 that is an arc, parallel side surfaces 43 and 44, and top surfaces 45 and 46 that are isosceles right triangles.
[0022]
Below the outer shaft 5, there is provided a free rotation range regulating mechanism 40 that regulates the manual rotation range of the door 1 (the relative rotation range of the drive shaft 4 and the outer shaft 5) to 180 degrees. . The manually operable free rotation range regulating mechanism 40 includes a pentagonal columnar portion 47 and a band plate 52 as a stopper. The band plate 52 is inserted into slits 5S and 5S provided in a direction perpendicular to the axis of the outer shaft 5 (tangential direction) and deviated from the axis, and is fixed to the outer shaft 5 with screws 53. ing.
[0023]
At the upper part of the outer shaft 5, an automatic rotation range restriction mechanism 50 is provided that restricts the automatic rotation range of the outer shaft 5 that is the rotation range of the door 1 by electric motor (motor) to about 90 degrees. The automatic rotation range restricting mechanism 50 includes a quarter-shaped fan-shaped gear 54 fixed to the outer shaft 5 by a key inserted into a key groove 51, and a base 31 of the housing 30. The sector gear 54 has one side 55 and the other side 56 that are orthogonal to each other. The door is closed when the one side 55 contacts the base 31, and the door closes when the other side 56 contacts the base 31. Is open 90 degrees.
[0024]
The side of the outer shaft 5 of the housing 30 (the right side lower portion of FIG. 2) is installed in a state where the motor 6 protrudes the output shaft 61 in the vertical direction. An output gear 62 is connected to the upper end of the output shaft 61. A reduction mechanism 60 is provided as a transmission mechanism between the output gear 62 and the sector gear 54 (the outer shaft 5). The speed reduction mechanism 60 has a large gear and a small gear (see the broken lines in FIGS. 2 and 3) attached to the support shafts 63 to 65 installed at the same level as the outer shaft 5 between the outer shaft 5 and the motor 6 . It consists of a reduction gear train.
[0025]
As in this embodiment, a pentagonal columnar portion 47 provided with a free rotation range restricting mechanism 40 on the drive shaft 4 and a strip 52 inserted into the outer shaft 5 through the slits 5S and 5S and the slits 5S and 5S. By configuring the automatic rotation range restriction mechanism 50 with the fan-shaped gear 54 and the base 31, the free rotation range restriction mechanism 40 can be formed with a combination of simple and easy processing parts. Reduction and occurrence of failure can be reduced. Further, by arranging the outer shaft 5, the motor 6 and the speed reduction mechanism 60 side by side, the vertical dimension of the automatic door opening and closing device 3 can be reduced, and the lower side when mounted below the main body 22 of the door closer 2. It is possible to minimize the bulge to the surface.
[0026]
The fan-shaped gear 54 is rotated by the rotation of the motor 6, and the orthogonal one side 55 or the other side 56 contacts the base 31 of the housing 30 at about 90 degrees as shown in FIG. Rotate in range. The drive shaft 4 and the outer shaft 5 are configured such that the apex P shown in FIG. 8C contacts the band plate 52 from the position where one side surface 43 shown in FIG. Through the position, it can be rotated 180 degrees to the position where the other side surface 44 shown in FIG.
[0027]
The opening / closing operation | movement of the door 1 by the automatic door opening / closing apparatus 3 is demonstrated. The motor 6 is connected to an energization control circuit 7 including a door opening switch 71 and a door closing switch 72 and a commercial power source. In a state where the door is closed, the outer shaft 5 is in a position indicated by a solid line in FIG. 8A where one side 55 of the fan-shaped gear 54 is in contact with the base 31, and the door 1 is manually turned 180. Can be rotated.
[0028]
When the door opening switch 71 is pressed, the motor 6 rotates and the fan gear 54 rotates to the right via the output gear 62 and the speed reduction mechanism 60, and is rotated 90 degrees as indicated by a dashed line in FIG. Until the other side 56 comes into contact with the base 31 and stops. The outer shaft 5 is rotated integrally by the rotation of the fan-shaped gear 54, and the drive shaft 4 is rotated to the position rotated 90 degrees indicated by the one-dot chain line in FIG. Move.
[0029]
Since the rotation shaft 25 connected to the drive shaft 4 is rotated by the coupling 12 and the door-side arm 26 is rotated integrally with the rotation shaft 25, the fixed-side arm 28 is also rotated in conjunction with the door 1. Opens 90 degrees. In this state, the door 1 can be further manually rotated in the opening direction.
[0030]
In the rotating shaft 25, potential energy for closing the door 1 is accumulated in a spring in the door closer 2 as it rotates. By adjusting the energization amount to the motor 6, the opening degree of the door 1 can be maintained at 90 degrees, for example, by balancing with the torque in the door closing direction by the door closer 2. In addition, the structure which stops the electricity supply to the motor 6 using reverse drive prevention means, such as a bevel gear and a worm gear, in the reduction mechanism 60 may be sufficient.
[0031]
When the door 1 is closed, when the door closing switch 72 is pressed, the motor 6 is reversed. When the closing speed of the door closer 2 (or manually) is lower than the closing speed of the motor 6, the door is closed at the speed set by the door closer 2 without assistance from the motor 6.
[0032]
Conversely, when the closing speed of the door closer 2 (or manually) is higher than the closing speed of the motor 6, the door 1 closes while accelerating the motor 6 by the restoring force of the spring compressed in the door closer 2. The door 1 closes at a door closing speed slower than the door closing speed attenuated by the damper in the door closer 2. In either case, the door closing speed is maintained at a low speed and safety is maintained.
[0033]
In addition, the start switch of the motor 6 may be a remote control device using infrared rays or ultrasonic waves, or may be a sensor that operates by detecting a person who passes through or approaches a door. A sensor that detects contact with the handle of the door can also be used.
[0034]
FIG. 9 shows a second embodiment. In this embodiment, a screw hole 1C for fastening the base 31 to the door 1 with screws 1A is an elongated hole that is long in the vertical direction. The screw 1A and the screw hole 1C form a displacement mechanism . The coupling 12 can be disconnected by loosening the screw 1A , displacing the automatic door opening / closing device 3 downward, and tightening the screw 1A again. Power failure or the like, when it can not operation of the automatic door opening and closing device 3, or the like when the automatic door opening and closing device 3 has failed, the opening and closing of the door only by the door closer 2 can be easily performed.
[0035]
FIG. 10 shows a third embodiment. In this embodiment, the screw holes 1D of the four screws 1B are elongated holes that are long in the vertical direction. Bis 1B and screw holes 1D forms a displacement mechanism, by displacing the automatic door opening and closing device 3 downward by loosening the screws 1B, it is possible to release the connection of the coupling 12.
[0036]
11 (a) and 11 (b) show aspects of the door control means 80 and the door 1 as a fourth embodiment of the present invention. In the fourth embodiment, opening / closing control of the door 1 is performed based on the door control means 80 from the viewpoint of safety. When a signal from a start switch (not shown) is sent to the signal identification unit 76, the power source 70 is closed, and the signal identification unit 76 instructs the energization control unit 77 in response to a closing signal, a half-open signal, and a full-open signal for the door 1. Send a signal. The central processing unit 75 always applies the closing signal with priority regardless of the closing signal, the half-opening signal or the full-opening signal, and the motor 6 is rotated so as to rotate the door 1 to the closing position (origin reference position). Energize. When the closed position detection unit 73 detects that the door 1 is in the closed position, the detection signal is sent to the energization control unit 77, and the central processing unit 75 controls the motor 6 according to the close signal, the half-open signal, and the full-open signal.
[0037]
In this case, since it is detected that the door 1 is in the closed position, the motor 6 is deenergized in the door closing mode by the closing signal, and the closing operation of the door 1 is finished. Thereafter, the opening operation of the door 1 is performed in response to the operation signal. When the door is in the half-open signal, the motor 6 is energized as the door half-open mode to rotate the door 1 by an angle of 45 degrees from the closed position. In the fully open signal, the motor 6 is energized in the door fully open mode to rotate the door 1 by an angle of 90 degrees from the closed position.
[0038]
If the closed position detection unit 73 does not detect that the door 1 is in the closed position, a non-detection signal is sent to the overcurrent detection unit 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 identification unit 76 to identify the closed signal, the half-open signal, and the full-open signal, and the same procedure as described above is repeated. When an overcurrent to the motor 6 is detected by the overcurrent detection unit 74, the power supply 70 is turned off and the motor 6 is stopped when an abnormality such as a malfunction occurs. Thereafter, in order to resume the opening / closing operation of the door 1, it is necessary to turn on the power supply 70 again.
[0039]
In the fourth embodiment, the motor 6 is controlled using 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 full-open signal. For this reason, the door 1 is always controlled to the safe side with respect to the user and the automatic door opening / closing device, and the motor 6 is not energized and driven in the half-open or fully-open direction from the state where the door 1 is slightly opened. . Thereby, the door 1 is not forcibly driven by the motor 6 in the opening direction, and safety in use is ensured.
[Brief description of the drawings]
FIG. 1 is a front view of an automatic door opening and closing device and a door closer.
FIG. 2 is a front view of the door closer.
FIG. 3 is a plan view of the 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 and 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 explanation of operation.
FIG. 9 is a front view of a second embodiment of the automatic door opening and closing device.
FIG. 10 is a front view of a third embodiment of the automatic door opening and closing device.
FIGS. 11A and 11B are block diagrams according to the door control means of the fourth embodiment, and FIG. 11B is a schematic view showing a mode of the door.
[Explanation of symbols]
1 door
1A, 1B screw (displacement mechanism)
1C, 1D screw hole (displacement mechanism)
DESCRIPTION OF SYMBOLS 12 Coupling 2 Door closer 21 Casing 22 Door closer body 25 Rotating shaft 26 Door side arm 28 Fixed side arm 3 Automatic door opening / closing device 30 Housing 31 Base 4 Drive shaft 40 Free rotation range regulating mechanism 5 Outer shaft 50 Automatic rotation Movement range regulation mechanism 52 Band plate 54 Fan gear 6 Motor 60 Deceleration mechanism (transmission mechanism)
61 Output shaft 7 Energization control circuit

Claims (3)

A casing that is fastened to the door is provided with a rotating shaft with both ends exposed up and down, a main body in which a biasing and damping means for the rotating shaft by a spring and hydraulic pressure is incorporated, and a base end that rotates A door-side arm connected to one end of the shaft and rotating integrally, and a fixed-side arm having a base end rotatably connected to a fixing member and a distal end rotatably connected to the distal end of the door-side arm An automatic door opening and closing device for a door with a door closer that accumulates potential energy in the closing direction as the door opens.
A housing mounted close to or below the casing; a drive shaft provided with a coupling to the lower end or upper end of the rotating shaft at the upper end or lower end; a motor, an output shaft of the motor, and the drive A transmission mechanism between the shaft and an energization control circuit for the motor, the motor being attached to a side of the drive shaft in the housing, the housing having substantially the same width as the casing An automatic door opening and closing device having a horizontally long box shape, wherein the door is opened and closed by rotating the rotation shaft by energization control to the motor. 2. The automatic door opening and closing device according to claim 1, wherein the transmission mechanism includes an outer shaft externally fitted to the drive shaft, and a free rotation range of the drive shaft provided between the outer shaft and the drive shaft. It comprises a limiting means, a fan-shaped gear fixed to the outer shaft, an automatic rotation range limiting mechanism for the fan-shaped gear, and a speed reducing mechanism disposed between the output shaft of the motor and the fan-shaped gear. An automatic door opening and closing device characterized by that. 3. The automatic door opening and 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. .

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