JP2000282741A - Folding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding door, in detail, a folding door automatically closed after it is opened having a simple structure, reducing the size of elongation of a tension spring, facilitating the open operation of a door exerting automatically closed movement without rapidly closing the door and maintaining a complete closed posture. SOLUTION: In a folding door 100 constituted of a first door 2 bearing an open side end in a rotatable manner and a second door 3 connecting the open side end to the first door 2 in a foldable manner and having the upper part thereof borne on a fixed member in a slidable manner in an openable direction, while a second pivot rotating together with the second door 3 and slidable in the openable direction is provided to the upper part of the second door 3, and an energizing device 9 rotating the second pivot in the direction closing the second door 3 is always provided in a position where it moves together with the second door 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a folding door,
More specifically, it relates to a folding door that automatically closes after being opened.

[0002]

2. Description of the Related Art Conventionally, folding doors are shown in FIG.
A pair of doors 1a, 2a are foldably connected by hinges 3a, and pivot pins 4a are provided on the upper and lower surfaces of the open end of the door 1a so as to be rotatable with respect to the outer frame 6a. A guide member 5a is provided on the upper surface of the closed end, and is supported by an upper rail (not shown) so as to be movable in the opening and closing direction, and is folded in a state shown by a thin phantom line in FIG.
a and a tension spring 8a is provided between the outer frame 7a and the closed outer frame 7a.

[0003]

However, in such a folding door, the moving distance of the guide member 5a is long, and the distance between the guide member 5a and the outer frame 7a is small when the door is closed. But door 1
Since a and 2a become extremely strong as they approach the open position, it is extremely difficult to fully open the door 1a and 2a.
a was very dangerous because it suddenly moved in the closing direction from the open position.

The distance between the center position of the hinge 3a and the position 9a where the tension spring 8a is attached to the outer frame 7a is set such that the center position of the hinge 3a is smaller than that of the guide member 5a than when the door 2a is completely closed. When it is located on a straight line connecting the rotating pins 4a (the state shown by the thick two-dot chain line in FIG. 10), it becomes the longest.
Does not close. Therefore, there is a problem that the doors 1a and 2a are not completely closed.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and has a simple structure and a small extension of a tension spring, so that the door can be easily opened and the door is rapidly closed. It is another object of the present invention to provide a folding door in which a closing movement is automatically performed and a complete closing posture is maintained.

[0006]

Means for Solving the Problems Therefore, in order to solve the above problems, the present invention is configured as a first means,
A first door having an open end rotatably supported, and a second door having an open end foldably connected to the first door and having an upper portion slidably supported in the opening and closing direction with respect to a fixed member. In the folding door, the second door is provided with a second rotation shaft that is rotatable with the second door and is slidable in the opening and closing direction at the upper part of the second door, while always closing the second door, An urging means for rotating the second rotation shaft is provided at a position where the urging means moves together with the second door.

Further, the present invention is constituted as a second means, a first door having an open end rotatably supported,
An open side end is foldably connected to the first door, and the upper part is a folding door comprising a second door slidably supported in the opening and closing direction with respect to the fixed member. A biasing means for rotating and rotating the second rotating shaft in a direction for always closing the second door, and a biasing means; The urging force adjusting means for adjusting the urging force is provided at a position where the urging force adjusting means moves together with the second door.

[0008] Further, the present invention is configured as a third means, a first door whose open end is rotatably supported,
An open end is connected to the first door in a foldable manner, and a slide member is rotatably supported by a slide support member provided on a slide member provided on the fixed member. A second door rotatably supported along the second rotation shaft and movably in the opening and closing direction. The second rotation is provided above the second door in a direction to always close the second door. In a folding door provided with a biasing means for rotating the shaft and a biasing force adjusting means for adjusting the biasing force of the biasing means at a position to move together with the second door, the biasing means is attached to the second rotating shaft. A rotation auxiliary plate that rotates together with the second rotation shaft provided, one end of which is fixed to an open end wrapped around the rotation auxiliary plate, and the other end extending to a closed side of the rotation auxiliary plate; A tension spring configured to always pull the wire toward the closed side; A coupling seat which is connected to the closed end of the Ribane, the adjusting bolt that moves the coupling seat in the closing direction,
It comprises a fixing seat for fixing the adjustment bolt at a predetermined position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 2 shows a front view of a state where the present invention is used as a folding door for a toilet. 2 and 3, the present invention will be described with the right side being a closed side, the left side being an open side, the front side being a front side, the back side being a back side, and the front and back sides being directions of entry and exit. Reference numeral 100 denotes a folding door of the present invention, and the folding door 100 is an opening / closing vertical frame 11 erected at an opening / closing end.
11, a three-sided frame 1 composed of an upper frame 12 provided at the upper end of the open / close side vertical frames 11, 11, and an open side vertical frame 11
Hinges 21 formed at the upper and lower ends of the closed side inner surface of the vehicle
(The upper and lower ends of the open side are rotatably supported, and the first door 2 having a door stop 22 on the open side end face, and the first door 2 can be freely folded via the closed end and the hinge 31. The second door 3 which is connected and has the door stop 32 on the closed side end face, and is located above the first door 2 and the second door 3 on both the front and back sides inside the three-sided frame 1 to conceal the internal structure. Front and back rammer panels 10, 1
0 and so on.

The second door 3 has a handle 33 and a display unit 3 on the front side.
4 is provided, and on the rear surface side, a display lock 35 that is detachably engageable with an engagement hole 350 (shown in FIG. 4) formed on the inner surface of the closed-side vertical frame 11 and that is interlocked with the display unit 34 is rotatable. Provided in
Further, a second rotation shaft 4 (shown in FIGS. 2 and 5) having a confirmation window 36 formed on both front and back sides and provided on a substantially central upper surface in the opening / closing side direction, and a second rotation shaft. The slide member 700 of the fixing member 6 disposed on the inner surface between the upper ends of the open / close side vertical frames 11, 11 via the support fitting 40 to which the support 4 is connected and the slide support member 5 to which the support fitting 40 is connected. It is slidably supported in the opening and closing directions.

Reference numeral 37 denotes a step 111 of the closed vertical frame 11.
A shock absorbing member attached to the front surface side of the second door 3 for cushioning the impact when the second door 3 is closed, and reference numeral 9 is located above the second door 3 so that the self-closing operation of the folding door 100 is facilitated; 2 shows a self-closing device formed between a slide support member 5 and a second rotation shaft 4.

The second rotating shaft 4 includes nuts 41, 41,
Is screwed into the screw shaft portion 4 to be inserted into the thrust bearing 42.
3 and a rotating shaft 45 formed in a quadrangular prism connected to the lower end of the screw shaft 43. The lower end of the rotating shaft portion 45 of the second rotating shaft 4 is welded to a rotating shaft mounting seat 58 screwed to the inner surface of the upper end of the second door 3.
In the embodiment, since the center of gravity of the second door 3 is located substantially at the center in the opening and closing direction, the second rotating shaft 4 is connected to the second door 3.
Above the center of the opening / closing direction (approximately the upper surface of the central portion in the opening / closing direction) to minimize the tilting when the second door 3 is opened / closed and to prevent an excessive load on the second rotating shaft 4. ing. However, depending on the form of the second door 3, the center of gravity is not always located at the center, so that the mounting position of the second rotating shaft 4 is desirably appropriately selected so as to be located above the center of gravity of the door.

The rotation shaft mounting seat 58 has an upper wall 581,
Opening / closing side walls 582, 582 protruding downwardly from the opening / closing side end of the upper wall 581 and opening / closing side walls 582, 5
A connecting wall 58 protruding toward the opening and closing side at the lower end of the connecting member 58
3 and 583, the lower end of the second pivot 4 is welded to the center of the upper wall 581, and the second pivot 4 is provided to protrude above the upper surface of the second door 3. .

The slide support member 5 is connected to first and second slide rails 7 and 8 connected to a fixed member 6 integrally or by screws or the like.
0 is screwed on the vertical support 52, and the vertical support 52
A horizontal portion 53 continuously provided from the upper end of the
The horizontal portion 53 is formed by a first mounting portion 54 and a second mounting portion 55 that are formed in an inverted L-shape upward from the front end of the horizontal portion 53.

The support fitting 40 has a support projection 402 formed with an insertion hole 401 into which the screw shaft 43 of the second rotation shaft 4 is inserted, and is connected to the support projection 402 to protrude upward. And a connecting projection 404 screwed to the vertical support portion 52 of the slide support member 5. That is, the second rotating shaft 4 is moved from below the insertion hole 401 to the screw shaft portion 4.
3 is inserted, and the thrust bearing 42 is externally fitted to the screw shaft 43 while the upper surface of the rotating shaft 45 is in contact with the lower surface of the support protrusion 402, and the nuts 41, 41 are screwed together.
The second rotation shaft 4 is supported by the slide support member 5 via the support fitting 40 together with the second door 3 and is movably supported in the opening and closing direction while rotating.

The fixing member 6 includes opening and closing side vertical frames 11 and 11.
And a horizontal mounting wall 62 formed in a slide member connecting concave portion 61 formed on the front surface side over the entire width in the opening and closing direction, and extending downward from a rear end of the horizontal mounting wall 62. A vertical mounting wall 63 provided, an upper horizontal wall 64 and a rear vertical wall 65 integrally formed at predetermined intervals on the rear surface side of the horizontal mounting wall 62 and the vertical mounting wall 63. .

The slide member 700 mounted in the slide member connecting recess 61 includes a first slide rail 7 disposed over the entire width in the opening and closing direction on the front side of the vertical mounting wall 63, and the horizontal mounting wall 62. A second slide rail 8 disposed over the entire width in the opening and closing direction on the lower surface side;
The first slide rail 7 includes a fixed rail 71 having a substantially C-shaped cross section, which is screwed to the vertical mounting wall 63, and a fixed rail 71.
Are slidably disposed via a ball retainer 72, balls 73,.
The width of the moving rail 74 in the opening and closing direction is substantially twice as long as the width of the sliding support member 5 to which the support fitting 4 is connected in the opening and closing direction.
Numeral 2 is formed to have a length substantially equal to half the width of the fixed rail 71 in the opening and closing direction, corresponding to the movement of the moving rail 74 by a distance equal to one-half the moving distance.

The second slide rail 8 is slidably fixed to a horizontal mounting wall 62 by a fixed rail 81 having a substantially C-shaped cross section and a ball retainer 82, a ball 83,. The movable rail 84 has a width in the opening / closing direction which is substantially twice as large as the width in the opening / closing direction of the slide support member 5 to which the support bracket 4 is connected. , The ball retainer 82 has a length approximately equal to half the width of the fixed rail 71 in the opening and closing direction, corresponding to the movement of the moving rail 84 by a distance equal to one-half the moving distance. Is formed.

That is, the first slide rail 7 and the second slide rail 8 have the same shape, and the respective balls 73.
., 83... Are positioned so that there is no backlash in the direction in which they are strong, so that the moving rails 74 and 84, the first mounting portion 54 of the slide support member 5, and the second By integrating the mounting portion 55, the load of the second door 3 is supported by the first slide rail, and the slide support member 5 is disposed in a horizontal direction even if a load is generated in the front and back sides. Since the second slide rail 8 receives the load,
The swinging of the second door 3 suspended from the slide support member 5 via the support fitting 4 in the front and back directions at the time of opening and closing is minimized. In the embodiment, the second slide rail 8
Are arranged horizontally, but are arranged in a horizontal direction so as to prevent the second door 3 from swinging in and out, ie, in a direction in which the slide support member 5 rotates about the first slide rail 7 as a center portion. It is more effective if provided in a slightly inclined horizontal direction.

The self-closing device 9 comprises an urging means 90 for rotating the second rotating shaft 4 and an urging force adjusting means 900 for adjusting the urging force of the urging means 90. That is, the urging means 90 is provided on the second rotating shaft 4,
A rotation assisting plate 91 that rotates together with the rotation assisting plate 9
1, a wire 92 fixed to the open end of the rotation assisting plate 91 and the other end extending to the closed side of the rotation assisting plate 91, and a tension spring 93 that always pulls the wire 92 to the closed side. It is configured.

The urging force adjusting means 900 includes a tension spring 9
3, a connection seat 94 connected to the end of the closed side end, an adjustment bolt 95 and adjustment nuts 96 for moving the connection seat 94 in the opening and closing direction, an adjustment bolt 95 and an adjustment nut 96,
It comprises a fixed seat 97 for keeping the 96 at a predetermined position.

The rotation assisting plate 91 has a shape of a flat quarter disk, and has a guide groove 911 for a wire 92 formed on a circumferential side surface thereof. Moving shaft part 4
5 is formed with a rectangular fitting hole 912, and one end of the wire 92 is connected to one end of the wire 92 on the open end face.
Is formed on the closed side of the fitting hole 912, and a connection screw hole 915 of a connection fitting 914 connecting the rotation shaft 45 and the rotation assisting plate 91 is formed. That is, the rotation assisting plate 91
Before the second rotation shaft 4 is attached to the support fitting 40 screwed to the slide support member 5, the fitting hole 912 is formed.
Is fitted to the rotating shaft portion 45 of the second rotating shaft 4, and furthermore, is connected and fixed to the second rotating shaft 4 by a connection fitting 914.

The fixed seat 97 is screwed to the back surface of the closed side end of the vertical support portion 52 of the slide support member 5, and has a mounting projection 971 projecting a predetermined dimension toward the closing side, and a mounting projection 971.
An adjustment bolt fixing portion 972 is provided on the closed side end of the adjustment bolt protruding from the front side, and an adjustment bolt 95 insertion hole is formed in the adjustment bolt fixing portion 972. Connection seat 94
Is composed of a bolt fixing piece 941 to which the adjusting bolt 95 is projected and fixed in the direction of the adjusting bolt fixing seat 972, and a spring connecting piece 943 having a connecting locking hole 942 to which the end of the extension spring 93 is connected. I have.

The self-closing device 9 is configured as described above, and switches the first door 2 and the second door 3 from the state where the first door 2 and the second door 3 are fully closed (the state shown in FIGS. 2 and 3). When opened, the second rotating shaft 4 rotates clockwise in FIG. 1 together with the second door 3 and the rotation assisting plate 91 fixed to the second rotating shaft, and is fully opened (FIG. 3). (A state shown by a virtual line). In this state, the second rotation shaft 4 and the rotation auxiliary plate 91 are rotated by 90 degrees, the wire 92 is wound around the rotation auxiliary plate 91, and the tension spring 93 is rotated regardless of the moving distance of the second door 3. The auxiliary plate 91 extends for a quarter of the circumference. (State shown in FIG. 9)

When the release state is released, the rotation assisting plate 91, the second rotation shaft 4, and the second door 3 are given a turning force in the counterclockwise direction in FIG. 9 by the pulling force of the tension spring 93. Since the second door 3 is connected to the first door 2 at the hinge 31, the second door 3 moves in the closing direction while rotating counterclockwise while rotating the first door clockwise. Eventually, it will be in a fully closed position. At this time, the closing speed of the door is adjusted by rotating the adjusting nuts 96, 96, and
4 and the adjusting bolt 95 are moved in the opening and closing direction to change the biasing force of the tension spring 93 to obtain a desired closing speed, and then the adjusting bolt 95 is fixed to the fixing seat 97 by adjusting nuts 96 and 96. .

In the embodiment, the rotation assisting plate 91 has a flat surface 4.
Since it is formed in the shape of a 1/1 disk, the vertical distance from the center of the second rotation shaft portion to the wire 92 at the position where the wire 92 is tangent to the rotation assisting plate 91 is opened and closed. It is constant at any time position. Therefore, the second rotating shaft 4
Is dependent on the extension dimension of the extension spring 93, and when the extension spring 93 is in the maximum extension state (the fully open position of the second door 3), the rotation moment applied to the second rotation shaft is maximum. Becomes That is, the initial speed of the closing speed that shifts from the fully open state to the closing motion is increased, and there is a possibility that the impact when the second door 3 contacts the vertical frame 11 at the time of the fully closed state becomes strong.

Then, the initial speed of the closing speed is reduced,
2 In order for the door 3 to be gradually closed, the wire is moved from the center of the second pivot shaft portion to the pivot assisting plate 91 at a position where the wire 92 is tangential to the pivot when the second door 3 is fully opened. What is necessary is just to form the rotation assisting plate 91 in a shape in which the distance in the vertical direction up to 92 is short and becomes the longest when fully closed (shown in FIG. 10), and can be changed as appropriate.

The rammer panel 10 has an upwardly-facing engaging projection (not shown) formed at the upper end thereof engaged with the inside of the upper frame 12 of the three-sided frame 1. On the inner surface side of the connector 11, it is detachably mounted by screwing it to a rammer mounting seat (not shown) projecting in the opening and closing direction.

[0029]

According to the first aspect of the present invention, the first door whose open end is rotatably supported, the open end is foldably connected to the first door, and the upper part is connected to the first door. In a folding door comprising a second door slidably supported in the opening and closing direction with respect to a fixed member, a second rotation above the second door, which is rotated together with the second door and is slidable in the opening and closing direction. While the shaft is provided, the urging means for rotating the second rotating shaft is provided at a position where the urging means moves together with the second door in a direction in which the second door is always closed. Because it is not affected by the position, it can be made a compact configuration,
Easy selection of biasing means, not only preventing sudden closure, but also obtaining a completely closed state

According to the second aspect of the present invention, the first door whose open end is rotatably supported, the open end is foldably connected to the first door, and the upper portion is a fixed member. In a folding door comprising a second door slidably supported in the opening and closing direction, a second rotating shaft that rotates with the second door and is slidable in the opening and closing direction is provided above the second door. On the other hand, the urging means for rotating the second rotating shaft and the urging force adjusting means for adjusting the urging force of the urging means are always moved together with the second door in a direction to close the second door. With the provision, the closing speed can be adjusted in addition to the above-described effects.

According to the third aspect of the present invention, the first door whose open end is rotatably supported, and the open end is foldably connected to the first door, and are disposed on the fixing member. The second slide shaft is rotatably supported by a slide support member provided on the provided slide member.
A second door is supported so as to be rotatable with the rotation shaft and movable in the opening / closing direction.
A biasing means for rotating the second rotating shaft in a direction to close the door and a biasing force adjusting means for adjusting the biasing force of the biasing means;
In the folding door provided at a position that moves with the door, the urging means includes a rotation auxiliary plate that rotates with the second rotation axis provided on the second rotation axis, and one end wound around the rotation auxiliary plate. The wire is fixed to the open end of the rotation assisting plate, the other end of which extends to the closed side of the rotation assisting plate, and a tension spring that constantly pulls the wire to the closed side. Since it is composed of a connection seat connected to the closed side end, an adjustment bolt for moving the connection seat in the opening and closing direction, and fixing means for fixing the adjustment bolt at a predetermined position, in consideration of the size of the door, By changing the size of the rotation assist plate, the extension of the tension spring can be changed,
A wide range of tension springs can be selected and optimal biasing force can be obtained. Further, the biasing force adjusting means has a simple structure including an adjusting bolt and an adjusting nut, and is easy to operate.

[Brief description of the drawings]

FIG. 1 is a lateral sectional view of a main part of the present invention.

FIG. 2 is a front view of the present invention.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged view of a portion B in FIG. 3;

FIG. 5 is an exploded perspective view of a slide support member and a second rotating shaft portion.

FIG. 6 is an enlarged sectional view of a slide member.

FIG. 7 is a longitudinal sectional view of a main part of the present invention.

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a cross-sectional view of a main part of the door in a fully opened state.

FIG. 10 is a cross-sectional view of a main part of a door using a rotation assist plate according to another embodiment in a fully opened state.

FIG. 11 is an explanatory view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Three-way frame 11 Vertical frame 100 Folding door 2 1st door 3 2nd door 4 2nd rotation axis 46 Fitting shaft part 5 Slide support member 6 Fixing member 7 1st slide rail 700 Slide member 8 2nd slide rail 9 Own Closing device 90 urging means 900 urging force adjusting means 91 rotation assisting plate 92 wire 93 tension spring 94 connecting seat 95 adjusting bolt 96 adjusting nut 97 fixing seat

Claims (3)

[Claims] A first end having an open end rotatably supported;
The open end is foldably connected to the door and the first door,
In a folding door having an upper portion slidably supported in the opening and closing direction with respect to a fixed member, the upper portion of the second door,
A second rotating shaft that rotates together with the second door and is slidable in the opening and closing direction is provided, while urging means for rotating the second rotating shaft in a direction that always closes the second door is provided. A folding door provided at a position where the folding door moves together with the second door. A first end having an open end rotatably supported;
The open end is foldably connected to the door and the first door,
In a folding door having an upper portion slidably supported in the opening and closing direction with respect to a fixed member, the upper portion of the second door,
A biasing means for rotating the second rotating shaft in a direction to always close the second door while providing a second rotating shaft which rotates together with the second door and is slidable in the opening and closing direction; A folding door, wherein the urging force adjusting means for adjusting the urging force of the urging means is provided at a position where the urging force adjusting means moves together with the second door. 3. A first device having an open end rotatably supported.
The open end is foldably connected to the door and the first door,
Via a second rotation shaft rotatably supported by a slide support member provided on a slide member provided on the fixed member, the slide member is rotatable with the second rotation shaft and opens and closes. A second door movably supported by
A biasing means for rotating the second rotating shaft and a biasing force adjusting means for adjusting the biasing force of the biasing means are moved together with the second door on the upper side of the second door, always in a direction for closing the second door. And a biasing means, wherein the urging means includes a pivoting assist plate which pivots with the second pivot shaft provided on the second pivot shaft, and an opening having one end wound around the pivoting assist plate. A wire fixed to the side end, the other end of which extends to the closed side of the rotation assisting plate, and a tension spring that constantly pulls the wire to the closed side, wherein the urging force adjusting means is a closed side end of the tension spring. A folding door, comprising: a connecting seat connected to the portion; an adjusting bolt for moving the connecting seat in the opening and closing direction; and a fixing seat for fixing the adjusting bolt at a predetermined position.