JP3768897B2 - Folding door opening / closing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folding door opening / closing structure that opens a narrow width to the maximum.
[0002]
[Prior art]
Conventionally, when an electric door is provided in a disabled person's house and a hospital ward room, it is common to use a sliding door using a sensing switch or the like.
However, when a sliding door is used, a door pocket of the same size or more is required for the width of the opening. Therefore, the general housing is remodeled into a housing for the physically challenged, or the size of the door pocket in a narrow place such as a hospital toilet. It was difficult to ensure.
[0003]
In order to reduce the overall size including the door pocket portion with respect to the opening, a two-sheet suspended electric sliding door has been developed as a countermeasure. However, in such a case, the overall frontage dimension is at least the opening and one or more electric doors. The door pocket dimensions are required.
Therefore, when it is impossible to use an electric sliding door due to the structure of the building, such as a house or hospital, in order to secure the maximum opening for the width, an electric door or an operating room, etc. The electric folding door used for is common.
[0004]
[Problems to be solved by the invention]
However, in the case of the electric door, there is a problem that the driving mechanism of the door becomes large because the movement area of the flat door is large, and the entire electric door is expensive.
Further, the electric folding door used in the operating room or the like is very expensive due to its complicated opening and closing mechanism, and generally cannot be used in a house or a hospital room toilet.
[0005]
The present invention has been made in consideration of such circumstances, and even in places where the use of sliding doors is difficult, the flat door moving area is small, and a simple and practical folding door opening / closing structure is inexpensive. It is intended to provide to.
[0006]
[Means for Solving the Problems]
In order to solve the above problems and achieve such an object, the present invention proposes the following means.
The invention according to claim 1 is a first folding door structure that is hinged to one end of a door frame, and a second folding door structure in which an upper end is suspended from a moving body that moves on the traveling axis along the upper rail. A folding door opening / closing structure having a body, wherein the moving body has an opening / closing shaft having a lower end supporting the second folding door constituting body, and moving in the forward or backward direction along the upper rail. An operation conversion mechanism for converting into a rotational motion, wherein the operation conversion mechanism is provided with a drive shaft to which the drive force in the forward or backward direction is applied, and one end side is provided at a lower end portion of the drive shaft, and the axis of the drive shaft is A first arm rotatable in the vertical direction as a center; a second arm having one end rotatably supported on the other end of the first arm and the other end held on the upper end of the opening / closing shaft; The above open / close shaft and Said drive shaft, are respectively disposed in the traveling axis, said second folding door structure, together with a position along the forward or backward direction in the closed state, perpendicular to the forward or backward direction in the open state It is in position and is rotated 90 ° in the process of transition between the closed state and the open state .
[0007]
According to the folding door opening and closing structure according to the present invention, the shape of each component of the opening and closing structure can be simplified, the number of components can be reduced, and the components can be easily assembled. Therefore, it is possible to provide a low-cost folding door. In addition, since a motion conversion mechanism that converts straight motion into rotational motion can be realized with a simple structure, a low-cost folding door can be provided. Furthermore, since the folding door opening / closing operation is performed by linear driving and rotational driving, the folding door opening / closing operation can be realized with high efficiency. When the folding door is opened and closed, the angle between the central axis of the first arm and the central axis of the second arm is more than 0 ° and less than 180 °, so that the opening and closing operation of the folding door is smoothed. It becomes possible. This makes it possible to provide a durable folding door at a low cost.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show a folding door opening / closing structure shown as one embodiment of the present invention. 1 is a front view of a folding door having an opening / closing structure according to the present invention as viewed from the indoor side, FIG. 2 is a rear view of the folding door shown in FIG. 1, FIG. 3 is a longitudinal sectional view of the folding door shown in FIG. FIG. 5 is a perspective view of the folding door traveling body shown in FIG. 1, FIG. 6 is a plan view illustrating the open / close state of the folding door according to the present invention, and FIG. FIG. 8 is an explanatory view showing an opening operation corresponding to the folding door opening / closing states (A) to (C) in FIG. 6, and FIG. 8 is an explanatory view showing a closing operation corresponding to the folding door opening / closing states (A) to (C) in FIG. It is.
[0013]
As shown in FIGS. 1 and 2, the folding door 100 includes a small door (first folding door component) 110 and a large door (second folding door component) 120 having different width dimensions. The width dimension of the large door 120 is generally set to 1: 2. Here, the handle 6 is provided on the outdoor surface of the large door 120, and the handle 7 is provided on the indoor surface.
The small door 110 is rotatably attached to the vertical rail 210 of the door frame 200 via the hinge 1. The large door 120 is connected to the position facing the vertical rail 210 with respect to the width direction of the small door 110 so as to be rotatable via the hinge 2, so that the small door 110 and the large door 120 can be folded. It is connected. Here, the hinge 2 is a so-called hidden butterfly plate, and is configured such that the hinge 2 cannot be seen from the outside when the folding door 100 is fully closed. Further, the axial center of the hinge 2 is located at the center of the small door 110 or the large door 120 in the thickness direction.
[0014]
As shown in FIGS. 3 and 4, the large door 120 includes an opening / closing shaft 53 at the center in the width direction, and the opening / closing shaft 53 travels on a rail 221 provided on the upper rail 220 of the door frame 200. It is connected to a body (moving body) 50, and the large door 120 is suspended and supported by the rotating shaft 53.
[0015]
As shown in FIG. 5, the traveling body 50 includes a roller 51, a vehicle body 52, an opening / closing shaft 53, an operation conversion mechanism 59, and a mounting plate 57. The motion conversion mechanism 59 includes a second arm 54, a first arm 55, and a drive shaft 56.
[0016]
Rollers 51 are attached to both side surfaces in the longitudinal direction of the vehicle body 52 formed in a substantially rectangular shape so as to be rotatable at equal intervals in the longitudinal direction on each side surface. A ball bearing 58 is fitted in the hole. An open / close shaft 53 is fitted in the ball bearing 58 and supported so as to be rotatable in the vertical direction. The lower end portion of the opening / closing shaft 53 is connected to the upper end surface of the large door 120, and the upper end portion of the opening / closing shaft 53 is held on one end side of the second arm 54. One end side of the first arm 55 is rotatably supported on the other end side of the second arm 54, and the lower end portion of the drive shaft 56 is rotatable in the vertical direction on the other end side of the first arm 55. It is supported by. An attachment plate 57 is held at the upper end of the drive shaft 56, and the drive of the opening / closing mechanism K is transmitted to the traveling body 50 via the attachment plate 57.
[0017]
As shown in FIGS. 3 and 4, the opening / closing mechanism K is configured such that a linear motor including a linear motor driving unit 300 is supported in the upper rail 220 of the door frame 200, and the linear motor driving unit 300 is driven. Thus, the traveling body 50 that suspends and supports the large door 120 is driven along the rail 221 provided in the upper rail 220 of the door frame 200.
[0018]
The opening operation of the folding door 100 configured as described above will be described with reference to FIGS. (A) to (C) in FIG. 7 correspond to the case where the traveling body 50 in FIG. 6 is in the positions (A) to (C).
In the state of (A), the large door 120 and the small door 110 are arranged in a straight line, the folding door 100 is fully closed, and is formed by the central axis X of the second arm 54 and the traveling axis Z of the traveling body 50. The angle θ2 is set in the range of more than 90 ° and not more than 100 ° with respect to the traveling direction L of the traveling body 50. When the linear motor drive unit 300 is driven in the direction of arrow L by the drive mechanism K, the drive shaft 56 moves in the direction of arrow L, and the first arm 55 also moves in the direction of arrow L following this. At that time, the connecting portion between the first arm 55 and the second arm 54 is rotated in the direction of the arrow M, and accordingly, rotational torque is generated around the open / close shaft 53. The rotational torque at this time is transmitted from the opening / closing shaft 53 to the large door 120, and the large door 120 is rotated about the opening / closing shaft 53 in the direction of arrow M as shown in FIG. Further, at this time, since the axial center of the hinge 1, the axial center of the hinge 2 and the axial center of the opening / closing shaft 53 form a triangle, a driving force for linearly moving the opening / closing shaft 53 in the direction of the arrow L is also applied. 120 is opened by the rotational torque of the opening / closing shaft 53 and the linear driving force. Thereafter, similarly, the large door 120 is opened by the rotational torque in the direction of the arrow M and the linear driving force in the direction of the arrow L. At the position (C), the large door 120 and the small door 110 are completely folded. The folding door 100 is fully opened, and the angle θ1 formed by the central axis of the first arm 55 and the central axis of the second arm 54 is less than 180 °.
[0019]
The closing operation of the folding door 100 will be described with reference to FIG. (A) to (C) in FIG. 8 correspond to the case where the traveling body 50 in FIG. 6 is in the positions (A) to (C).
At the position (C), the large door 120 and the small door 110 are completely folded, and when the linear motor driving unit 300 is driven in the direction of arrow R by the driving mechanism K, the driving shaft 56 is moved in the direction of arrow R. Following this, the first arm 55 also moves in the direction of arrow R. At this time, since the angle θ1 is less than 180 °, the second arm 54 starts to rotate smoothly in the direction of the arrow N without twisting the connecting portion between the first arm 55 and the second arm 54. . Thereafter, the rotational torque of the opening / closing shaft 53 and the linear driving force in the direction of arrow R are transmitted to the large door 120 as in the opening operation, so that the large door 120 is centered on the opening / closing shaft 53 as shown in FIG. Then, it is moved in the direction of the arrow R while being rotated in the N direction, and is closed. In the position (A), the connecting portion between the large door 120 and the small door 110 is completely flat, and the folding door 100 is fully closed.
[0020]
According to the opening / closing structure of the folding door 100 configured as described above, the opening / closing operation of the folding door 100 can be reliably and inexpensively realized using the drive mechanism M that moves linearly. Further, since the opening / closing operation of the folding door 100 is realized by the linear driving force and the rotational torque, an efficient opening / closing operation can be realized.
[0021]
In the above embodiment, a linear motor is used as the drive mechanism M. However, the present invention is not limited to the linear motor, and there is no problem in function even if another drive mechanism is used.
[0022]
In addition, when the folding door 100 is fully closed, the angle θ2 is set in the range of more than 90 ° and less than 100 ° because the angle θ1 is greater than 0 ° and less than 180 ° until the folding door 100 is fully opened. This is because the second arm rotates about 90 ° while the folding door 100 is fully opened and closed. Therefore, the angle θ2 is appropriately set according to the angle at which the second arm rotates while the folding door 100 is fully opened and fully closed.
[0023]
In the above embodiment, the traveling body 50 traveling on the rail 221 provided on the upper rail 220 supports the large door 120, and the traveling body 50 travels on the rail 221 when the folding door 100 opens and closes. However, the function of the configuration excluding the vehicle body 52 and the roller 51 remains unchanged.
[0024]
【The invention's effect】
As is apparent from the above description, according to the invention of claim 1, each component of the folding door opening / closing structure can be formed into a simple shape and the number of each component can be reduced. Since each component can be easily assembled, a low-cost folding door can be provided. It is possible to realize a motion conversion mechanism that converts straight motion into rotational motion with a simple structure, and to provide a low-cost folding door. In addition, the folding door can be opened and closed smoothly, and a durable folding door can be provided at low cost.
[Brief description of the drawings]
FIG. 1 is a front view of a folding door shown as an embodiment of the present invention as viewed from the indoor side.
FIG. 2 is a rear view of the folding door shown in FIG.
FIG. 3 is a longitudinal sectional view of the folding door shown in FIG. 1;
FIG. 4 is an enlarged cross-sectional view of a folding door traveling body (moving body) and a drive unit shown in FIG. 1;
FIG. 5 is a perspective view of a folding door traveling body (moving body) shown in FIG. 1;
6 is a plan view for explaining an open / closed state of the folding door shown in FIG. 1; FIG.
7 is an explanatory diagram showing an opening operation corresponding to the open / closed states (A) to (C) of the folding door in FIG. 6;
8 is an explanatory view showing a closing operation corresponding to the folding door open / closed states (A) to (C) in FIG. 6;
[Explanation of symbols]
50 Running body (moving body)
53 Opening / closing shaft 54 Second arm 55 First arm 56 Drive shaft 59 Motion conversion mechanism 100 Folding door 110 Small door (first folding door structure)
120 large door (second folding door structure)
200 Door frame 220 Upper rail 221 Rail X First arm center axis Y Second arm center axis θ1 Angle formed by the first arm center axis and the second arm center axis

Claims (1)

Folding door opening / closing structure having a first folding door structure hinged to one end of a door frame, and a second folding door structure having an upper end suspended from a moving body that moves on the traveling axis along the upper rail Because
The movable body has an opening / closing shaft whose lower end supports the second folding door structure,
An operation conversion mechanism for converting movement in the forward or backward direction along the upper rail into rotational movement of the opening and closing shaft;
The motion conversion mechanism includes a drive shaft to which the forward or backward drive force is applied,
A first arm having one end side provided at a lower end portion of the drive shaft and capable of rotating in a vertical direction around the axis of the drive shaft;
One end side is rotatably supported on the other end side of the first arm, and the other end side is constituted by a second arm held on the upper end portion of the opening / closing shaft,
The open / close shaft and the drive shaft are each disposed on the travel axis,
The second folding door structure is in a position along the forward or backward direction in the closed state and is in a position perpendicular to the forward or backward direction in the open state, and transitions between the closed state and the open state. A folding door opening and closing structure that rotates 90 ° in the process of turning .

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