JP2005282035A - Double swinging rolling door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double swinging rolling door which can open a door board by rotating the same through almost 90° forward and backward. <P>SOLUTION: The rolling door 1 has the door plate 20 opened/closed in a door frame 11, and an arm 30 which is turnable about an arm turning fulcrum A by a motor 40 arranged at a corner in the door frame. The door board 20 has vertically extending two swing shafts, and one of the swing shaft P1 is a rotary swing shaft turnable together with the turn of the arm 30 while and the other swing shaft P2 is a slidable swing shaft slidable along a door frame 11U. The slidable swing shaft P2 is energized so as to assume a door closing position by an energizing mechanism 90, and therefore the door board 20 can be rotatable almost 90° (85° or more) forward and backward. In this manner, the bidirectionally openable rolling door which has only a small unopened space defined by the door board, and can use almost the entire width of a door frontage, can be provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a double-opening type rolling door that can open a door plate to both the front side (front side) and the rear side (back side) of a door opening. In particular, the present invention relates to a double-rolling type rolling door that is improved so that the door plate can be opened approximately 90 degrees forward and backward.

  In general rolling doors, the door plate opens and closes the door opening by a mixed movement of rotational movement and linear movement. Such a rolling door is usually provided with an arm that rotates around a rotation fulcrum (rotation axis) inside the door frame. On the other hand, the door plate has two swing shafts extending in the vertical direction. One swinging shaft moves forward (forward) while drawing an arc as the arm rotates, and the other swinging shaft slides along the door frame. As a result, the door plate rotates in the front-rear direction around the latter swing shaft (slide swing shaft), and the door opening is opened.

Such a rolling door has the following features compared with a general sliding door or a hinged door.
The sliding door needs a retracting space for accommodating the door plate when the door opening is opened. For this reason, it can be applied to an entrance / exit provided on the wall surface of the building, but when the corridor is divided into front and rear, it is difficult to apply because the lead-in space protrudes outside the corridor. In this respect, since the rolling door does not require such a pull-in space, the degree of freedom of installation location is high.

  On the other hand, in the case of a hinged door, a dead space is generated at the front part or the rear part of the door opening (in the case of the double door type, the front and rear parts). The dead space is an area occupied by a locus traced by the door plate when the door is opened and closed. Specifically, the dead space is an arc region having the door plate width as a radius around the rotation fulcrum of the door plate. In other words, it is necessary to leave this space for opening and closing the door, and it becomes a dead space because an object cannot be placed in the space. Also, if there is a person behind the door opening, there is a risk that the opened door plate will hit the person. In this respect, the rolling door has a shape in which the dead space is distributed little by little to the front part and the rear part of the door opening, and its area is also narrow.

  Thus, since the rolling door has a high degree of freedom of installation location, in recent years, the rolling door is being used for an operating room, a toilet in a house, and the like. As such rolling doors, various types of doors such as an automatic opening / closing type in which an arm is driven by a driving mechanism such as a motor, and a pair of left and right door plates arranged in a door frame are disclosed (for example, patents). (Refer to Literatures 1 and 2)

Japanese Patent Laid-Open No. 2001-207719 JP 2001-295540 A

However, considering the case of an automatic opening / closing double-rolling type rolling door, there are the following problems.
First, by using the double opening type, it is not possible to provide a door stop for keeping the door plate in the closed position. This is because when a door stop is present, the door plate can be opened on one side but not on the other side. When the door stop is not provided, the door plate does not fit in the fixed position when the door is fully closed, and the appearance is poor. Further, when the atmospheric pressure changes between the front and rear sides of the door plate, the door plate may be opened by air pressure. For this reason, when the door plate is closed, the brake of the opening / closing drive motor is operated to prevent the door plate from moving.

  Furthermore, the conventional rolling door cannot open the door plate up to 90 ° from the door opening. This is because if the door plate is opened 90 °, a dead point is generated in a mechanism formed by the door plate, the arm, and the two door swinging shafts, and the arm cannot be turned (see FIG. 6 will be described later). Therefore, the door plate is limited to not open up to 90 ° to avoid forming a dead point. However, if the door plate is not fully opened, the space left behind (the space between the open door plate and the wall) will increase, and the effective opening width (the space where people and objects can pass between the open doors) Becomes narrower.

  On the other hand, many doors with a pair of left and right door plates arranged in the door frame have a single drive mechanism that opens and closes both door plates in conjunction with a belt or the like. For this reason, it was only possible to open both door plates synchronously. In this method, when a passerby approaches from both sides of the door plate almost simultaneously, there is a risk that the two door plates will open to either side and the open door plate will hit the passerby. It was.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a double-opening type rolling door capable of opening the door plate forward and backward by approximately 90 °. Furthermore, it aims at providing the double-opening type rolling door which can open and close each of a pair of left and right door plates independently.

  The double-opening type rolling door of the present invention includes a door frame, a door plate that is opened and closed in the door frame, and a distal end portion that rotates around an arm rotation fulcrum provided at a corner in the door frame. An arm having a first swing shaft (rotation swing shaft) of the door plate, and a slide shaft having a second swing shaft (slide swing shaft) of the door plate that slides along the door frame. A mechanism, wherein the door plate opens back and forth approximately 90 °.

  By opening the door plate back and forth approximately 90 ° (85 ° or more), it is possible to provide a double-opening type rolling door in which the space left behind for the door plate is small and the entire width of the door opening can be used.

In the present invention, if the slide rocking shaft is provided with a biasing mechanism that biases the slide swing shaft toward the position in the door closed state, the door plate is always maintained in the closed position without providing a door stop. can do.
Furthermore, a drive mechanism for rotating the arm can be provided. At this time, the door plate can always be maintained in the closed position even when the brake of the motor is not operated by using it together with the above-mentioned urging mechanism of the slide rocking shaft. Furthermore, even when the door plate is opened approximately 90 ° and the door plate and the arm form a dead point, the biasing mechanism and the drive mechanism can help each other to close the door plate (see FIG. 6 for details). And will be described later).

  The double-rolling type rolling door according to another aspect of the present invention includes a door frame, a pair of left and right door plates that are opened and closed in the door frame, and arm rotation fulcrums provided at opposite corners in the door frame. A pair of arms having a first swing shaft (rotation swing shaft) of each of the left and right door plates at a tip thereof, a pair of drive mechanisms for rotating each of the arms, and the door A pair of slide shaft mechanisms having a second swing shaft (slide swing shaft) for each of the left and right door plates that slide along a frame, and the left and right door plates open to approximately 90 ° in the front-rear direction. It is characterized by that.

  In the above invention, it is preferable that a sensor for detecting a person is provided at a front part and a rear part of the door frame, and the drive device is not operated when both of the sensors detect a person almost simultaneously. . As described above, a conventional double-rolling type rolling door having a pair of left and right door plates is generally one that drives both door plates synchronously with one drive source. Since the door is provided with a drive mechanism on each of the two door plates, each door plate can be driven separately. For example, when a passerby approaches from both sides of the door plate, both door plates can be prevented from opening. It is also possible to open one door plate on the front side and open the other door plate on the rear side.

  In the present invention, if it is assumed that overlap portions alternately provided in the thickness direction of the door plate are provided at the door tips of the pair of left and right door plates, the line of sight before and after the door in the center of the door when the door is closed Can be blocked. Moreover, air leakage can be reduced.

  As is apparent from the above description, according to the present invention, the door plate is opened by approximately 90 ° in both the front and rear directions, so that the remaining size of the door plate is small, and the door opening that can use almost the full width of the door opening can be used. A rolling door can be provided. Furthermore, it is possible to provide a double-opening type rolling door that can open and close a pair of left and right door plates independently.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the entire structure of a double-opening rolling door according to an embodiment of the present invention will be described.
FIG. 8 is a front view showing the overall structure of a double-opening rolling door (in the case of a single door plate) according to an embodiment of the present invention.
The rolling door 1 of this example is an automatic opening / closing double-rolling type rolling door, and includes a door frame 10, a single door plate 20 that swings and opens in the door frame 10, and a rotation in the door frame 10. An arm 30 that rotates about an axis (rotation fulcrum) A is provided.

  The door frame 10 is laid around the door opening of the building. The upper frame 11U extends in the horizontal direction along the upper side of the door opening, the left vertical frame 11L and the right vertical frame extend in the vertical direction along the left and right sides. 11R. Note that a frame is not laid on the lower side of the door opening, but is a floor surface.

  A rail box 13 extending along the frame 11U is attached to the lower surface of the upper frame 11U. As will be described in detail later, the rail box 13 is provided with a rail on which the slide shaft mechanism (roller assembly 70) of the door plate 20 slides.

The door plate 20 has a vertically long rectangular shape, and a transparent window 21 is provided at substantially the center. The door plate 20 has two swing axes P1 and P2 extending in the vertical direction. The door plate 20 is suspended from the arm 30 and the rail box 13 on the swing axes P1 and P2. The left swing shaft P <b> 1 in the drawing is a rotational swing shaft that rotates as the arm 30 rotates. A rocking shaft P2 on the right side of the drawing is a slide rocking shaft that slides along the upper frame 11U. The interval between the arm rotation axis A and the rotation oscillation axis P1, the interval between the rotation oscillation axis P1 and the slide oscillation axis P2, and the interval between the slide oscillation axis P2 and the right edge of the door plate 20 are substantially the same. equal. In this way, the distance between the shafts and edges is substantially equal (approximately 1/3 between the left and right vertical frames 11L and 11R of the door frame (frontage)), and the door plate 20 is pulled out to both sides of the door opening. The balance of space is improved. Note that these intervals can be changed.
Further, the upper frame 11U is provided with a biasing mechanism 90 that biases the slide swing shaft P2 toward the position in the door closed state (details will be described later).

The arm 30 rotates around a rotation axis A extending in the vertical direction inside the left vertical frame 11L by being driven by a motor (drive mechanism) 40 with a speed reducer. The arm 30 has a U-shape, a shaft portion 31 that rotates around the rotation axis A, an upper arm 33 that extends from the upper end of the coaxial portion 31 along the lower surface of the rail 15, and a lower end of the coaxial portion 31. After extending downward, the lower arm 35 extends along the floor surface. The lengths of the upper and lower arms 33 and 35 are about 1/3 of the door opening.
The shaft portion 31 and the upper arm 33 of the arm 30 are made of a hollow member having a square cross section, and the lower arm 35 is made of a belt-like plate.

  When airtightness is required, the space between the door plate 20 and the rail box 13 on the side of the upper arm 33 (right side in the figure) is blocked by a shielding member, or the extended portion of the door plate 20 is the same space. It extends to.

Next, the detailed structure of each part and the opening / closing mechanism of the rolling door 1 will be described.
FIG. 1 is a view for explaining an opening / closing mechanism of a double-opening type rolling door according to an embodiment of the present invention.
2A and 2B are diagrams for explaining the detailed structure of the rolling door of FIG. 1, FIG. 2A is a plan view of an arm driving mechanism, and FIG. It is a cross-sectional view.
FIG. 3 is a side sectional view for explaining the structure of the sliding swing shaft and the rail box of the rolling door of FIG.
As shown in FIG. 1, the motor 40 is disposed at the corner between the left vertical frame 11 </ b> L and the floor surface in the door opening so that the output shaft 41 is coaxial with the arm rotation axis A. The arm receiver 43 is fixed to the left vertical frame 11L by welding so as to surround the motor 40. As shown in FIG. 2A, the motor 40 is fixed to the upper surface of the arm receiver 43 with screws 47.

  At the upper end of the shaft portion 31 of the arm 30, an arm shaft 37 extending on the arm rotation axis A is erected. The arm shaft 37 is rotatably supported on the lower surface of the upper frame 11U via a pivot hinge 39. The lower end of the shaft portion 31 is rotatably supported on the upper surface of the arm receiver 43 via a bearing 49, and is fixed to the output shaft 41 of the motor 40 protruding from the arm receiver 43 with a key and a key groove. Has been.

By driving the motor 40, the arm 30 rotates about the arm rotation axis A by approximately 180 °, that is, approximately 90 ° forward and approximately 90 ° rearward from the door closed position. Since the shaft section 31 of the arm 30 has a square cross section, as shown in FIG. 2B, the corners C1 and C2 of the shaft section 31 do not hit the left vertical frame 11L when the arm rotates. A recess 12 is provided on the inner surface of the frame 11L.
In addition, in order to install the motor 40 at the corner of the door frame, the lower arm 35 is made of a belt-shaped plate, and a space is made below the shaft portion 31.

As shown in FIG. 1, the first swing shaft (rotary swing shaft) P <b> 1 of the door plate 20 includes an upper rotation shaft 51 that connects the tip of the upper arm 33 and the upper edge of the door plate 20, and a lower The lower rotation shaft 53 is configured to connect the tip of the arm 35 and the lower edge of the door plate 20.
The upper end of the upper turning shaft 51 is supported by the tip of the upper arm 33 via a thrust bearing 57 so as to be turnable. The lower end of the coaxial 51 is screwed to a plate 25 fixed in a groove 23 formed on the upper edge of the door plate 20 with a lock nut 59.
The upper end of the lower rotation shaft 53 is rotatably supported by a plate 29 fixed in a groove 27 formed at the lower edge of the door plate 20 via a bush 61. The lower end of the coaxial 53 is fixed by welding in a through hole 36 formed at the tip of the lower arm 35.

  A second swing shaft (slide swing shaft) P2 of the door plate 20 is a slide shaft 81 that connects a roller assembly (slide shaft mechanism) 70 that slides in the rail box 13 and the upper edge of the door plate 20. It consists of An upper end of the slide shaft 81 is rotatably supported by the roller assembly 70 via a thrust bearing 83. The lower end of the coaxial 81 is screwed to the plate 25 fixed in the groove 23 on the upper edge of the door plate 20 with a lock nut 85.

  As shown in FIGS. 1 and 3, the roller assembly 70 includes two pairs of rollers 71 arranged in the length direction of the rail box 13. Each roller 71 reciprocates while rotating on the rail 15 formed on both sides of the channel of the rail box 13.

Next, the opening / closing mechanism of the door plate 20 will be described.
4, 5, and 6 are plan views for explaining a state in which the door plate is opened. In addition, the case where the passerby advances from the front side to the rear side will be described with the lower side of the drawing being the door opening front side and the upper side of the drawing being the door opening rear side.
When the door plate 20 is opened from the front side from the door fully closed state shown in FIG. 4, the motor 40 is driven to rotate the arm 30 around the arm rotation axis A in the clockwise direction. Then, as shown in FIG. 5, the upper and lower arms 33 and 35 move to the front side (lower side in the figure) along an arc whose radius is the length of the upper and lower arms 33 and 35. Then, the rotation swing axis P1 (vertical rotation shafts 51, 53) of the door plate 20 moves on this arc, and the door plate 20 rotates around the coaxial P1 in the counterclockwise direction in the figure. Then, the slide swing shaft P2 (slide shaft 81) is slid along the rail 15 in the direction of the arm rotation shaft A along the roller assembly 70 by being pulled by the rotation swing shaft P1. At the same time, the door plate 20 rotates around the slide swing axis P2 in the counterclockwise direction in the figure.
That is, the portion of the door plate 20 from the coaxial P2 to the left edge moves to the front side (lower side in the figure) and the part from the coaxial P2 to the right edge moves to the rear side (in the drawing) around the slide swing axis P2. The door plate 20 is drawn to the front side so as to cross the door frame.

  Further, when the arm 30 is rotated approximately 73 ° around the arm rotation axis A from the closed state, the door plate 20 is rotated 90 ° with respect to the door opening as shown in FIG. At this time, the drawer space on the front side of the door opening has a length of about 2/3 of the width of the door plate 20, and the drawer space on the rear side of the door opening is about 1/3 of the width of the door plate 20. It becomes length. At this time, the rear surface of the door plate 20 substantially contacts the inner surface of the arm receiver 43. For this reason, the width of the door opening is narrowed by the width of the arm receiver 43 and the thickness of the door plate 20.

FIG. 7 is a plan view showing the trajectory of the door plate when the door is opened and closed.
As shown in FIG. 7, the dead space is allocated little by little to the front part and the rear part of the door frame, and its area is also narrow. In the front side of the door opening (the lower side in the figure), a portion from the slide swing shaft P2 to the left side edge of the door plate 20 is pulled out. Because there is almost no, it does not hinder traffic. Further, on the rear side of the door opening (upper side in the figure), a portion from the slide swing axis P2 of the door plate 20 to the right edge is pulled out, but the distance is about 1/3 of the width of the door plate. Even if there is a person on the rear side, there is little risk that the door plate 20 will hit.

  As shown in FIG. 1, a mechanical stopper 101 with which the roller assembly 70 abuts when the door is fully opened is disposed in the rail box 15. Further, limit switches 103A and 103B for detecting the position of the roller assembly 70 when the door is fully closed and when the door is fully opened are arranged on the upper frame 11U. Each of the switches 103A and 103B is activated to stop the motor 40 when the roller assembly 70 reaches the open limit position and the close limit position.

  Furthermore, on the front side and the rear side above the door opening, human sensors 105 for detecting a passerby approaching the front side and the rear side of the door opening are arranged. When the sensor 105 on the front side of the door opening detects a passerby, the motor 40 is driven to rotate the arm 30 forward, and when the sensor on the rear side of the door opening detects a passerby, the arm 30 is moved rearward. The motor 40 is driven to rotate.

  As described above, the automatic opening / closing double-rolling type rolling door has a problem that the door plate does not fit in a fixed position when the motor is stopped in the fully closed state. Therefore, the rolling door 1 of this embodiment is provided with a biasing mechanism 90 that biases the door plate 20.

  As shown in FIG. 1, the urging mechanism 90 includes a conston spring 91 attached to the right end of the lower surface of the upper frame 11 </ b> U, and a wire 93 that connects the spring 91 and the slide shaft 81. The spring 91 biases the slide shaft 81 in the direction of the spring 91, that is, the position of the slide shaft 81 when the door is closed. That is, the door plate 20 is always biased in the closing direction.

As shown in FIG. 6, when the door plate 20 opens 90 °, a dead point is generated in a mechanism formed by the door plate 20 and the upper and lower arms 33 and 35, the rotation swing shaft P <b> 1, and the slide coaxial P <b> 2. However, even in this state, the door plate 20 is urged by the urging mechanism 90 so as to be always closed (in the direction indicated by the white arrow in FIG. 6). When a force is applied, the upper and lower arms 33 and 35 can rotate. Further, by providing the urging mechanism 90, the door plate 20 can always be kept in a fully closed state without causing a mistake.
As the urging mechanism 90, a tension spring, a push spring, an air cylinder, or the like can be used in addition to the conston spring 91.

  In this example, the case of the automatic opening / closing type in which the door plate 20 is driven by the motor 40 has been described. However, the same urging mechanism 90 as described above can be provided also in the case of the manual opening / closing type that does not use a motor.

FIG. 9 is a diagram showing the overall structure of a double-opening type rolling door (in the case of a two-door plate) according to another aspect of the present invention.
FIG. 10 is a plan view showing the trajectory of the door plate when the rolling door of FIG. 9 is opened and closed.
FIG. 11 is a cross-sectional view showing the structure of the door tip of the rolling door of FIG.
The rolling door 201 of this example is a case where a pair of left and right door plates are arranged side by side in the door opening, and is suitable when the door opening has a wide opening. In this rolling door 201, two rolling doors 1L and 1R shown in FIG. 1 are arranged symmetrically with respect to the center of the door opening. That is, each door plate is driven by an individual motor. Each door plate is also provided with a rolling door urging mechanism 90 of FIG.

  With such a structure, each door plate can be driven independently. Therefore, in addition to opening and closing both door plates in the same direction at the same time, only one door plate can be opened and the other door plate can be closed. Furthermore, one door plate and the other door plate can be opened in opposite directions. For example, when a passerby approaches the door opening almost simultaneously from both sides of the door opening, both door plates can be prevented from opening. In this case, one door plate may be opened on the front side, and the other door plate may be opened on the rear side.

As shown in FIG. 11, overlap portions 111 a that overlap alternately in the thickness direction of the door plates are provided at the door tips of the door plates 20 </ b> R and 20 </ b> L. By providing such an overlap portion 111a, it is possible to block the line of sight before and after the door in the clearance of both doors when the door is closed. Moreover, air leakage can be reduced.
When the door is fully open, in the thickness direction of the door plate, the door plate on the side where the overlap portion 111a is formed ahead of the direction in which the door plate is opened is slightly ahead of the other door plate. Control to open.

It is a figure for demonstrating the opening / closing mechanism of the double opening type rolling door which concerns on embodiment of this invention. FIG. 2A is a plan view of an arm driving mechanism, and FIG. 2B is a cross-sectional view illustrating a state of rotation of the arm. is there. FIG. 2 is a side cross-sectional view for explaining the structure of a sliding rocking shaft and a rail box of the rolling door of FIG. 1. It is a top view explaining a mode that a door board is opened. It is a top view explaining a mode that a door board is opened. It is a top view explaining a mode that a door board is opened. It is a top view which shows the locus | trajectory of the door board at the time of door opening and closing. It is a front view which shows the whole structure of the double swing type rolling door (in the case of a single door board) which concerns on embodiment of this invention. It is a figure which shows the whole structure of the double-opening type rolling door (in the case of 2 door plates) of the other aspect of this invention. It is a top view which shows the locus | trajectory of the door board at the time of door opening and closing of the rolling door of FIG. It is sectional drawing which shows the structure of the door tip of the rolling door of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rolling door 10 Door frame 11U Upper frame 11L Left vertical frame 11R Right vertical frame 12 Recess 13 Rail box 15 Rail 20 Door plate 21 Window 23 Groove 25 Plate 27 Groove 29 Plate 30 Arm 31 Shaft 33 Upper arm 35 Lower arm 36 Through Hole 37 Arm shaft 39 Pivot hinge 40 Motor 41 Output shaft 43 Arm receiver 47 Screw 49 Bearing 51 Upper rotating shaft 53 Lower rotating shaft 57 Thrust bearing 59 Lock nut 70 Roller assembly (slide shaft mechanism) 71 Roller 81 Slide shaft 83 Thrust Bearing 85 Lock nut 90 Energizing mechanism 91 Conston spring 93 Wire 101 Mechanical stopper 103 Limit switch 105 Sensor 111a Overlap portion 201 Rolling door A Arm pivot point (axis)
P1 Rotating rocking shaft P2 Slide rocking shaft

Claims (6)

Door frame,
A door plate opened and closed within the door frame;
An arm having a first swing shaft (rotation swing shaft) of the door plate at the tip thereof, which rotates around an arm rotation fulcrum provided at a corner in the door frame;
A slide shaft mechanism having a second swing shaft (slide swing shaft) of the door plate that slides along the door frame;
Comprising
A double-rolling type rolling door characterized in that the door plate opens to the front and back to approximately 90 °.   The double-opening type rolling door according to claim 1, further comprising an urging mechanism that urges the slide swing shaft toward a position in a door closed state.   The double-rolling type rolling door according to claim 1, further comprising a drive mechanism for rotating the arm. Door frame,
A pair of left and right door plates opened and closed within the door frame;
A pair of arms that rotate around an arm rotation fulcrum provided at opposing corners in the door frame and that have first swing shafts (rotation swing shafts) for each of the left and right door plates at their distal ends. When,
A pair of drive mechanisms for rotating each of the arms;
A pair of slide shaft mechanisms having a second swing shaft (slide swing shaft) of each of the left and right door plates that slide along the door frame;
Comprising
A double-opening type rolling door, wherein the left and right door plates are opened to approximately 90 ° in the front-rear direction. A sensor for detecting a person is provided at the front and rear of the door frame,
The double-rolling type rolling door according to claim 3 or 4, wherein when both of the sensors detect a person almost simultaneously, the driving device is not operated.   The double-rolling type rolling door according to claim 4, wherein overlapped portions alternately overlapping in the thickness direction of the door plate are provided at the door tips of the left and right door plates.

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