JPH0236749B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a door opening/closing device that can be suitably used particularly as a door opening/closing device of a Buddhist altar.

[Prior art]

Conventionally, door opening/closing devices, particularly for Buddhist altar doors, have been known to open and close the left and right door bodies using nut fittings that fit onto screw shafts with right-handed and left-handed screws on the left and right sides, respectively. It is being

In addition, as shown in Fig. 7, Japanese Utility Model Publication No. 50-69850 discloses a door in which a V-belt b wound around a pulley and doors c and c are directly connected by support fittings d and d so that they can be moved in the wrong direction. The opening/closing mechanism is disclosed as the prior art.

[Problem that the invention seeks to solve]

However, in the former method using a threaded shaft, the stroke of the nut is half the length of the threaded shaft, which has the disadvantage that the threaded shaft becomes long and the device becomes large in order to open and close the door.

Although the latter can open and close the door c by effectively utilizing the length of the V-belt b, it is not the same because the V-belt a and the door c are simply connected by the support fitting d. As described in the publication, the disadvantage was that the offset was large and stability was poor.

The present invention has two movably mounted slide pieces.
It is equipped with a rail member of a strip, an endless chain that engages the slide pieces so as to be able to be moved in different directions, and an electric motor, etc., which simplifies the structure and makes it possible to downsize the device. The object of the present invention is to provide a door opening/closing device that is stable and can solve the above-mentioned problems.

[Means for solving problems]

The present invention provides two parallel rail members 69, 70 on which slide pieces 71, 72 are movably attached and arranged along the opening of the box part 2, and rail members 69, 70 provided on both sides of the rail members 69, 70. Support part 55
A, 55B, and the center of rotation is the rail member 69,
The support portion 55 is located on a straight line parallel to the support portion 70.
Rotating bodies 1 with the same pitch diameter arranged at A and 55B
1, 12, and an endless chain 13 that is hooked parallel to the rotating bodies 11, 12 so that each running line 14a, 14b becomes parallel to the rail members 69, 70,
An electric motor M that rotates the rotating bodies 11 and 12 in forward and reverse directions.
and move the endless chain 13 and the slide pieces 71, 72 to the slide pieces 71, 72 at one end of movement on the rail members 69, 70.
The slide pieces 71 and 72 are disposed on both sides of the opening and open and close the opening. A door opening/closing device 1 comprising arms 4 and 5 that can be connected to each other of the door bodies 3 and 3 at the end of movement side, and the arm that can be connected to the door body 3. 4 and 5 are attached to the slide pieces 71 and 72 that move the rail members 69 and 70, the opening and closing of the door bodies 3 and 3 can be stabilized and smoothed. miniaturization of
This makes it possible to simplify the structure.

An embodiment of the present invention will be described below based on the drawings.

In FIGS. 1 to 5, the door opening/closing device 1 includes two rail members 69, 70 to which slide pieces 71, 72 are movably attached, support parts 55A, 55B provided on both sides of the rail members 69, 70, and Support part 55A, 5
The rotating bodies 11 and 12 arranged on 5B, and the rotating bodies 11,
12 and each running line 14a, 14b
comprises an endless chain 13 engaged with the slide pieces 71, 72, and an electric motor M that rotates the rotating body 11 in forward and reverse directions, and the slide pieces 71, 72,
Arms 4 and 5 are provided to connect the door body 3.

The door opening/closing device 1 includes a door 3 provided in a box part 2,
In this embodiment, the box part 2 forms a Buddhist altar, and the rail members 69 and 70, the supporting parts 55A and 55B, the rotating bodies 11 and 12, the endless chain 13, and the electric motor M are Both constitute a frame body K that is integrally portable.

The box part 2 is a zushi B that is stored inside the main body part A, and an overlay box C is placed on the top surface of the main body part A, and an undercover box C is provided with a drawer or the like as appropriate on the bottom surface. D is placed.

The main body part A has a back plate 23 between an upper plate 21 and a lower plate 22, and on both sides of the front side of the side plates 24, 24,
A sliding door-like outer door body 25, which can be manually opened in both directions, is pivotally attached to each door body.

The box portion 2 includes a ceiling plate 26 having a depth approximately half that of the upper plate 21 and the lower plate 22, and whose side edges and back edges abut against the back plate 23 and side plates 24, and a bottom plate 27. and side plates 31, 31 extending from the back plate 23.
and the back plate 23 and has an opening in the front, and the front edge of the ceiling plate 26 is provided with an upper wall 29 that closes the opening with the upper plate 21. A drive chamber 33 is formed between the upper plate 21 and the ceiling plate 26. Note that a lower wall 30 is also formed at the front edge of the bottom plate 27 between it and the lower plate 22. The distance between the side plates 31, 31 is about 1/2 of the width of the main body part A, and the door body 3 is attached to both sides of the opening of the box part 2.

The door body 3 has a folding door shape in which an inner door piece 7 and an outer door piece 9 are screwed together so that they can be folded inward, and one end of the door body 3, that is, one side edge of the inner door piece 7 on the box part 2 side is , are screwed onto the front edge of the side plate 31 on the side of the opening, respectively, and the door body 3,
3 opens and closes the front opening of the box part 2. In addition, when the door bodies 3, 3 are closed, the inner door piece 7 inclines inward, the outer door piece 9 becomes outwardly bulging parallel to the front surface of the box part 2, and the front side of the ceiling plate 26 teeth,
A projecting portion 35 is formed by projecting forward from the closed outer door piece 9.

The projecting portion 35 has guide grooves 10a, 10b.
(generally referred to as guide grooves 10) are formed symmetrically.

The guide grooves 10a and 10b extend laterally outward from the center of the overhang 35, respectively.
0a and 10b are near the open end of the outer door piece 9,
The joint point 39 with the arms 4 and 5 is connected to the door body 3.
closes the box part 2 by its closing position 41 (third
), and the opening position 42 where the inner door piece 7 and the outer door piece 9 are unfolded and spread in a wing shape to open the box part 2.
In this example, from the closed position 41 to the outside of the straight part 44 parallel to the opening on the front surface of the box part 2,
A circular arc portion 45 that curves forward is provided in a row.

The rail members 69 and 70 in the opening/closing position 1 of the door accommodated in the drive chamber 33 are arranged on the ceiling plate 26 and parallel to the straight portion 44 of the guide groove 10 along the lower opening. In addition, its length is determined between the closed position 41 and the open position 4 of the outer door body 9.
It is larger than the distance between 2 and 2.

The rail members 69 and 70 are formed of grooved steel rods having opposing lips, and are arranged vertically and parallel to each other with the grooves in front. The rail members 69 and 70 also include the slide pieces 7, which have protruding joint portions 17 and 18 integrally formed with the base portion 74 provided with a groove that fits into the lip.
1,72 are movably attached.

Also, the slide piece 7 that fits into the upper rail member 69
1 is provided with an upward facing piece 76, and the corresponding piece 76
There are brackets 77, 7 on both sides of the upper rail member 69.
Detector 8 such as a micro switch provided via 7
The contact ends 81 and 82 facing each other can come into contact with each other. Note that the contact ends 81 and 82 of the detectors 83 and 84 are positioned at equal distances from the center of the opening on the left and right sides. Further, the rail members 69, 70 are attached to a base 50 whose length exceeds the rail members 69, 70.

The base 50 has an L-shaped cross section with a vertical piece 53 on the back of the bottom piece 52 attached to the ceiling plate 26, and as described above, the base 50 is longer than the rail members 69 and 70. Therefore, in this example, the vertical piece 5
3, the protruding parts from the rail members 69 and 70 are the support parts 55 on which the rotating bodies 11 and 12 are arranged.
A, 55B are formed. Further, on one side of the base 50, a branch piece 54 facing the support portion 55A is erected.

In this embodiment, the rotating bodies 11 and 12 are chain wheels 11a and 12a having the same pitch diameter, and as shown in FIG. An endless chain 13 consisting of a chain 13a is hung in parallel between the chain wheels 11a and 12a. Further, as shown in FIG. 2, by making the pitch circle diameter the same as the distance between the groove centers of the rail members 69 and 70, the traveling lines 14a and 14b are
It is parallel to 9 and 70 and located in front of the groove. Therefore, the upper running line 14a is the upper sliding piece 71.
Then, the lower running line 14b can easily engage with the lower sliding piece 72. In addition, the running lines 14a and 14b are
Slide pieces 71 and 72 are provided at intermediate positions between the detectors 83 and 84, and therefore approximately at the center of the rail members 69 and 70.
are connected to the slide pieces 71 and 72, respectively. As a result, slide pieces 71, 72
is the stop position of one of the rail members 69, 70, that is, in the case of the slide piece 71, the slide piece 76 operates and stops the detector 83 from one movement end position, and the other operates and stops the detector 84. The slide piece 72 moves between one movement end position on the detector 84 side and the other movement end position on the detector 83 side, which is opposite to the case of the slide piece 71. , can move as the endless chain 13 turns in one direction, and move in the opposite direction as the endless string 13 turns in the other direction, and cross each other approximately at the center of the rail members 69 and 70, respectively.

Note that the chain wheel 11a, as shown in FIG.
The outer end is pivotally supported by a support piece 54 and is attached via a torque limiter 58 to a horizontal extension shaft 56 extending from the output shaft of the electric motor M attached to the back of the support portion 55A.

The torque limiter 58 includes a base cylinder 63 that has a flange 62 expanded at one end of a cylinder part 61 that is keyed to the extension shaft 56, and nuts 64, 6 that are hinged to the cylinder part 61.
4, and the chain wheel 11a has a flange 6
2 and the inner surface of a presser plate 66 that is loosely fitted into the cylindrical portion 61 with a spring material 65 such as a disc spring interposed between the nut 64 and the friction plate 67;
The slip torque is limited by the torque strength based on the friction force between the friction plate 67 and the friction plate 67 due to the spring force.

The other chain wheel 12a is attached to a support shaft fixed horizontally by a support portion 55B on the other side of the base 50, while the rail members 69, 70 are attached to the front surface of the vertical piece 53 of the base 50 with screws or the like. It is fixed using

Therefore, in this embodiment, the vertical piece 5 of the base 50
3, the rail members 69, 70, the rotating body 11,
12. By attaching the electric motor M and the mounting pieces 55A and 55B, the frame K, which is integrally portable as a whole, is formed as described above.

Further, the arms 4 and 5 are connected to the coupling portions 17 and 18 of the slide pieces 71 and 72, respectively. The arms 4 and 5 are, as shown in detail for the arm 5 in FIG. 4, each one end of which is rotatably loosely inserted into a bearing sleeve 86 provided at the junction 39 on the upper surface of the outer door piece 9, and has a roller. Insertion part 1 passing through guide groove 10
5.16 is supported. Note that the insertion portion 15 extends upward to the same height as the coupling portion 17, and the other insertion portion 16 is formed to be relatively short and approximately the same height as the coupling portion 18, so that the mounting height is reduced. are different. Further, when the arm 4 is at the one end of movement position where the slide piece 71 comes into contact with the contact piece 81 of the detector 83 and stops, the arm 4 connects the connecting portion 18 of the slide piece 71 with the other end of movement of the slide piece 71. It has a length that connects the insertion portion 15 to the closed position 41 of the door body 3 which is pivotally supported at the side of the opening on the position side.

Further, the arm 4 is connected to the connecting portion 17 of the slide piece 72,
It has the same length as the arm 5 and can be connected to the insertion portion 16 in the same manner as the arm 4.

Therefore, the arms 4 and 5 are connected to the respective detectors 83 and 84, respectively.
By the forward movement away from the outer door pieces 9, 9, the outer door pieces 9, 9 can be pushed and opened, and during the backward movement, the door bodies 3, 3 can be closed by the pulling operation. When the connecting parts 17 and 18 approach each other, they intersect in an X-shape, and as they pass, the door body 3 opens while taking on a V-shape. It is clear that the guide groove 10 can also be linear, in which case the arms 4, 5 are connected to the connecting parts 17, 18.
When the arms 4 and 5 are made rotatable at both ends as in the above embodiment, each of the arms 4 and 5 can be fixed to a folding door or formed integrally with the connecting parts 17 and 18. It is obvious to those skilled in the art that the device 1 can be used to open and close various types of doors in addition to the folding door of the above embodiment, including the fact that it can be used to open and close so-called double doors. be. Furthermore, as long as the slide pieces 71 and 72 can move smoothly and without play on the rail members 69 and 70, a plurality of rollers are used and the rail members 69 and 72 are moved by rolling of the rollers.
It can be modified in various ways, such as one that slides over 9 and 70.

However, the door opening/closing device 1 drives the electric motor M from the closed state in which the slide piece 71 is located at the detector 83 side and the slide piece 72 is located at one end of movement position on the detector 84 side. As described above, by the pushing motion of arms 4 and 5, outer door piece 9
The door bodies 3, 3 are opened while aligning the joint points 39 thereof along the guide grooves 10a, 10b. Note that the contact piece 71 of the slide piece 71 comes into contact with the detector 84 when opened.
Also, it can be closed by reverse operation of the electric motor M. Furthermore, since the torque limiter 58 slips, the door bodies 3, 3 can be manually pushed open while the electric motor M is stopped. Note that the detectors 83 and 84 define the stroke end of the slide piece 71, and the detectors 83 and 84 are connected to a control device,
The control device can rotate the electric motor M in forward and reverse directions by operating a switch (not shown) in forward and reverse directions. Also, the arms 4 and 5 that open and close the door body 3 are connected to the rail member 6.
Since the sliding pieces 71 and 72 are attached to the sliding pieces 71 and 72 that move the sliding pieces 9 and 70, the sliding pieces 71 and 72 are guided by the rail members 69 and 70 and move smoothly and correctly, thereby stabilizing the opening and closing of the door bodies 3 and 3. can.

FIG. 6 shows another embodiment in which the rail members 69 and 70 are made of sections and are arranged horizontally, and the support pins are attached to the slide pieces 71 and 72, that is, the connecting parts 17 and 18 provided on the chain 13a. 91,
By changing the lengths of the arms 4 and 5, the mounting heights of the arms 4 and 5 can be changed, and the connecting portions 17 and 18 of the arms 4 and 5 are different.
It is possible to approach and then pass by. Note that the arm 4 is formed longer than the arm 5.

〔Effect of the invention〕

As described above, the door opening/closing device of the present invention has two rail members to which slide pieces are movably attached, and rotating bodies arranged at both ends of the two rail members, which are hung parallel to each other and engage the slide pieces so that they can be moved in different directions. It consists of an endless chain, an electric motor, the rotating body, a support part on which the rotating body is arranged, and an arm, and the door can be opened and closed with a simple structure. In addition, the entire stroke of the endless chain can be used to open and close each door body, so compared to conventional drive devices that cannot intersect, the length of the rail member can be reduced by almost half, making the device more compact. It also helps reduce costs. Furthermore, since the arm that opens and closes the door body has one end supported by a slide piece that moves the rail member, unlike the conventional device shown in Fig. 7,
To smoothly and stably open and close a door body by moving a slide piece smoothly and accurately. Moreover, since the endless chain is hung parallel to the rotating body arranged on the support parts provided on both sides of the rail member, it is possible to bring the running line of the endless chain and the slide piece close together, and In some cases, it becomes possible to efficiently transmit the force of the endless chain to the slide piece without causing twisting or the like. In the door opening/closing device of the present invention, the guide groove can be formed in various shapes such as a straight line or a dogleg shape as long as it follows the opening/closing locus of the door. The door opening/closing device of the present invention can be modified in various ways, such as opening and closing the door by using a belt, a rope, or even by using a timer to reverse the electric motor. Further, the door opening/closing device of the present invention is suitably used for Buddhist altars and the like, and in such cases, it can also be used for opening and closing the door outside as well as the zushi. Furthermore, by making the device of the present invention integrally portable as in the embodiment described above, the installation efficiency of the device is further improved.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a perspective view illustrating the drive device, FIG. 3 is a line diagram showing the opening/closing state of the door body, FIG. 4 is a cross-sectional view showing the mounting state of the arm, and FIG. FIG. 6 is a perspective view showing another embodiment of the present invention, and FIG. 7 is a front view showing a conventional device. 3... Door body, 4, 5... Arm, 11, 12...
...Rotating body, 13...Endless chain, 14a, 14b...
...Travel line, 55A, 55B...Support part, 69,7
0...Rail member, 71, 72...Slide piece,
K...Frame body, M...Electric motor.

Claims (1)

[Claims] 1. Two parallel rail members to which the slide piece is movably attached and arranged along the opening of the box part, support parts provided on both sides of the rail member, and a center of rotation parallel to the rail member. a rotating body having the same pitch diameter and located on a straight line and disposed on the support portion; an endless chain that is hooked parallel to the rotating body so that each running line is parallel to the rail member; and an electric motor that rotates a rotary body in forward and reverse directions, and the endless chain and the slide piece are arranged so that each of the slide pieces at the end of movement on the rail member crosses each other approximately in the center, and each of the other slide pieces A slide piece that is movably engaged to a movement end position and is at one of the movement end positions, and a door body that is arranged on both sides of the opening and opens and closes the opening, the other movement end position side. A door opening/closing device comprising an arm that can be connected to a door body.