JP3490514B2 - Door opening and closing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device, and more particularly, to a door frame for opening and closing a door, which is opened and closed, on a fixed frame body on one side of the doorway of furniture and fittings.

[0002]

2. Description of the Related Art Conventionally, doors are attached to the entrances and exits of furniture, fittings, etc. in a freely openable and closable manner. As a door opening and closing device in this case, for example, a fixed frame on one side of the entrance and exit is used.
The lower pivot receiver is fixed to the lower end of the door, the upper pivot receiver is fixed to the upper end of the door, and the door that opens and closes the door is fitted to the lower end of the door from above the lower pivot receiver. The lower shaft pivot to be fitted is fixed, and the upper shaft pivot that fits to the upper pivot receiver from below is vertically movably provided on the upper end of the lower shaft pivot. A configuration is known in which the device is urged so as to protrude.

[0003]

In the above structure, when the door is attached to the fixed frame on one side of the entrance / exit, the door is first inserted into the fitting hole of the lower pivot receiver of the fixed frame on the one side. The lower shaft pivot of the above from a diagonally upper position, then raise this door vertically, and fit the upper shaft pivot of the upper end of this door into the upper pivot receiver of the fixed frame on one side. Although it fits in the dowel, the upper shaft pivot of this door body is always projected above the door body by a spring, so just raising the door body vertically causes the upper shaft pivot to move upward. Cannot fit into the fitting hole of the pivot receiver.

Therefore, the upper shaft pivot at the upper end of the door is pushed vertically with the fingers against the spring to pull up the door vertically, and the upper shaft pivot is fitted to the upper pivot receiver. While aligning toward the hole,
While releasing the finger that pushed in the upper shaft pivot, and by further raising this door body in the vertical direction, the upper part of the upper shaft pivot is fitted to the upper pivot receiver by the restoring force of the spring, so that one side is fixed. It takes a lot of time and effort to attach the door body to the frame body, and there is the inconvenience that the door body cannot be easily attached, which is not preferable for facilitating the on-site installation work. The upper end of the door body is pushed into the lower part of the upper pivot receiver while pushing it downwards against the spring, so when this door body is closed, it is unsightly between the upper end of the door body and the upper pivot receiver. There is a problem that a relatively large gap is generated and the appearance is impaired.

The present invention has been made in view of the above circumstances, and the other member such as the door member can be easily attached to one member such as the fixed frame member on one side of the entrance and the like with one touch. The installation work at the site is easy and the work efficiency can be improved, and when the door is closed, there is no large unsightly gap between the upper end of the door and the frame, and the appearance is impaired. Therefore, it is an object of the present invention to provide a door opening / closing device which can be prevented from being opened and which is easy to handle and has excellent workability.

[0006]

According to another aspect of the present invention, there is provided a door opening / closing device, wherein one mounting plate mounted on one member, the other mounting plate mounted on the other member, the one mounting plate and the other mounting plate. A vertical rotation center shaft that rotatably supports the mounting plate and the mounting plate, and the one mounting plate is formed at an end portion of the other mounting plate side and A hollow cylindrical body having a bearing support body supporting a bearing body having a fitting hole for fitting a tip end portion, wherein the other mounting plate is located at an end portion on the side of the one mounting plate. And a holder that is vertically movable in the hollow cylindrical body and has the rotation center axis fixed thereto, and a holder that is provided in the hollow cylindrical body and always urges the rotation center axis through the holder to rotate. Is the tip of the central shaft the hollow cylindrical body? A spring for projecting, a stopper provided on the hollow cylindrical body for locking the holder urged by the spring, and a support for supporting the holder provided on the hollow cylindrical body for storing the spring. Section and a support mechanism having an operation section for releasing the support of the holder.

A door opening / closing device according to a second aspect is the door opening / closing device according to the first aspect, wherein the supporting mechanism is an elastically deformable support plate protruding from an end of the hollow cylindrical body, and the support plate. A support portion protrudingly provided at an end portion of the hollow portion, and a support portion releasably engaged with a locking hole formed in the holder; and a guide hole formed at a portion near one end of the hollow cylindrical body protruding from the support plate. And an operating portion that is inserted so as to move back and forth.

A door opening / closing device according to a third aspect is the door opening / closing device according to the first or second aspect, wherein the holder is provided in a hollow cylindrical body so as to be vertically movable, and a base end portion of a rotation center shaft is fixed. An annular base body, a vertical support projection projectingly provided on one side portion of the annular base body to form a locking hole, and a spring protruding from the other side portion of the annular base body facing the support projection piece. And a holding projecting body having an engaging hole for engaging the end portion.

[0009]

In the door opening / closing device according to the first aspect of the present invention, one mounting plate is mounted on one member and the other mounting plate is mounted on the other member. When the rotation center shaft is pushed toward the hollow cylindrical body of the other mounting plate, the holder is pushed toward the support mechanism against the spring at the rotation center shaft, and the spring is moved by the holder. A large amount of energy is stored, the holder is supported by the support portion of the support mechanism, and the tip of the rotation center shaft fixed to the holder is retracted into the hollow cylindrical body.

Next, the end portion of the hollow cylindrical body of the other mounting plate is arranged horizontally with respect to the bearing body of the one mounting plate, and is retracted into the hollow cylindrical body through the fitting hole of the bearing body. When the tip end of the rotation center shaft is aligned and the operation portion of the support mechanism is pushed, the operation portion releases the support of the holder.

When the support of the holder is released,
The return force of the spring pushes the holder in the direction in which it protrudes from the rotation center axis, moves this holder, and the tip of the rotation center axis fixed to this holder moves from the hollow cylindrical body to one side. The holder is automatically fitted in the fitting hole of the bearing body, and the holder is locked by the stopper provided on the hollow cylindrical body.

Therefore, the other mounting plate is rotatably supported on one mounting plate so as to be openable and closable with one touch, and the other member is easily mounted on the one member, and the other member is mounted to be openable and closable. To be

In the door opening / closing device according to the second aspect, when the operation portion of the support mechanism is pushed, the operation portion is guided by the guide hole of the hollow cylindrical body and retracted toward the hollow cylindrical body. , The support plate having this operation part is elastically deformed,
The support portion protruding from the end of the support plate is disengaged from the locking hole of the holder.

Then, the holder is pushed in the direction of projecting the rotation center axis by the restoring force of the spring that is largely stored in the holder, the holder is moved, and the tip of the rotation center axis is moved. The part is automatically fitted in the fitting hole of the bearing body of the one mounting plate. Therefore, the lock of the holder is released by the one-touch operation of pushing the operating portion of the support mechanism fitted in the guide hole of the hollow cylindrical body, and the one axis of the rotation causes the one mounting plate to be attached to the other of the mounting plates. The mounting plate is pivotally supported so that it can be opened and closed.

In the door opening / closing device according to the third aspect of the present invention, when the operation portion of the support mechanism is pushed, the support plate is elastically deformed, and the support portion projecting from the end portion of the support plate has the support projection of the holder. It comes off from the locking hole formed in. Then, the bottom of the fitting hole into which the end portion of the spring is fitted is pushed by the restoring force of the spring that is largely stored in the holder, and the annular base body having the fitting hole moves along the hollow cylindrical body. Is moved toward the direction of projecting the rotation center shaft, and the tip end of the rotation center shaft having the base end fixed to this annular base is fitted into the fitting hole of the bearing body of one of the mounting plates. It

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a vertical fixed frame body as one member constituting an entrance / exit of furniture, fittings, etc. The fixed frame body 1
Has a vertically embedded recess 2 located at the upper end of the opening edge, and one mounting plate 3 is provided in the recess 2.
The plate case 4 in the up and down direction is fitted, and the plate case 4 is integrally fixed to the fixed frame body 1 by a plurality of mounting screws 5.

The plate case 4 has a rectangular mounting recess 6 formed at a substantially middle portion in the vertical direction, and a supporting projection 7 in the vertical direction is formed at an outer edge of the mounting recess 6. The support projection 7 is integrally formed with a protrusion, and a screw hole 8 in the front-rear direction is formed in a substantially intermediate portion in the vertical direction of the support protrusion 7. The adjustment screw 10 having a large-diameter head 9 is rotated in the screw hole 8 by rotation. It is screwed so that it can move back and forth. A vertical mounting shaft 11 is fixedly mounted on the inner end of the mounting recess 6 in the vertical direction.

Further, the one mounting plate 3 has a rectangular plate body 12, and a hollow cylindrical shape in a vertical direction is formed in a lower outer end portion of the rectangular plate body 12, that is, in a lower outer end portion on the side of the other mounting plate described later. The bearing support 13 is integrally formed, and the bearing 15 is fitted into the hollow portion 14 of the bearing support 13 from above and is integrally supported.

The bearing body 15 has a vertical cylindrical portion 16 fitted in the hollow portion 14 of the bearing support 13, and the bearing is provided at the outer peripheral edge of the upper end of the cylindrical portion 16. A flange 17 engaged with the upper opening edge of the support 13 is integrally formed, and the cylindrical portion 16 has a vertical fitting hole 18 whose upper surface is expanded and opened.

A cover body 20 having an insertion hole 19 communicating with the fitting hole 18 of the bearing body 15 is fitted on the upper end portion of the bearing support body 13. A cap body 21 is fitted on the lower end portion of the bearing support body 13. Further, an arrangement recess 22 is provided above the bearing support 13 having the bearing 15 and above the outer end of the rectangular plate 12 is arranged a hollow cylindrical body of the other mounting plate described later. Is cut out.

Further, on the inner side of the rectangular plate body 12, bearing pieces 23 are integrally projectingly provided on both upper and lower side edges thereof so as to face each other.
The upper and lower bearing pieces 23 are the mounting shaft 11 of the plate case 4.
It is rotatably supported by. In addition, an operation hole 24 for inserting a driver, which is located at a substantially middle portion in the vertical direction of the rectangular plate body 12 for rotating the large-diameter head portion 9 of the adjusting screw 10, is formed in the inner portion of the rectangular plate body 12, The peripheral edge of the large-diameter head 9 of the adjusting screw 10 is brought into contact with the opening edge of the operation hole 24.

Engaging pieces 25 are cut and raised on both sides of the operation hole 24 so as to integrally project from each other. The engaging pieces 25 on the both sides have a large diameter head portion of the adjusting screw 10. The lower surface of 9 is abutted. And the operation hole
The large-diameter head 9 of the adjusting screw 10 is sandwiched between the opening edge portion of 24 and the engaging pieces 25 of the both sides, and by rotating the adjusting screw 10, the mounting shaft 11 is centered. As described above, the one mounting plate 3 is adjusted in the front-rear direction, and the large-diameter head portion 9 of the adjusting screw 10 holds the set position of the one mounting plate 3.

Next, 26 is a vertical door body as the other member, and this door body 26 has a fitting concave portion 27 at the upper end portion at one end face portion in the width direction thereof. The base end of the other mounting plate 28 is fixed by a plurality of mounting screws 29.

The other mounting plate 28 has a rectangular plate body 30 which is long in the vertical direction, and a hollow in the vertical direction is provided at the tip of the rectangular plate body 30, that is, at the upper end of the tip located on the side of the one mounting plate 3. The tubular body 31 is integrally formed, and a guide hole 33 communicating with the hollow portion 32 of the hollow tubular body 31 is formed in one end portion of the hollow tubular body 31, that is, a peripheral surface portion near the upper end. A mounting recess 28a is formed at the outer end of the other mounting plate 28 below the hollow cylindrical body 31 for mounting the bearing support 13.

A stopper 34 is fitted and fixed to the lower end of the hollow cylindrical body 31. This stopper 34
While having a tubular portion 35 fitted in the hollow tubular body 31, at the lower end of the tubular portion 35 has a flange 36 abutting the lower end opening edge of the hollow tubular body 31, the The tubular portion 35 has a shaft sliding hole 37 communicating with the hollow portion 32 of the hollow tubular body 31. The lowering of the holder described later is stopped at the upper end of the tubular portion 35,
The flange 36 is adapted to abut on the cover body 20.

Next, 38 is a holder made of synthetic resin, and the holder 38 is located above the stopper 34 and is vertically movable in the hollow portion 32 of the hollow cylindrical body 31. There is. This holder 38 has an annular base 39,
A connecting hole 40 is formed in the center of the annular base 39, and an insertion opening 41 communicating with the connecting hole 40 is cut out at one side of the annular base 39, and the opening of the insertion opening 41 facing each other is formed. The edge portion is formed by a guide surface 42 that widens outward. Then, the annular base body 39 is elastically deformed at the insertion port 41 in a direction of opening and closing the connecting hole 40.

Further, a support projection piece 43 in the vertical direction is integrally formed on one side upper part of the annular base 39, and a rectangular locking hole 44 is formed in the support projection piece 43. Further, a substantially semi-cylindrical holding projection 45 is integrally formed on the other side upper part of the annular base 39 facing the support projection 43, and the holding projection 45 has a coil spring to be described later. A vertical fitting hole 47 having a bottom portion 46 for fitting the end portions is formed.

The inner end portion of the supporting projection piece 43, which is located above the connecting hole 40 and is provided so as to face each other, and the holding projection body.
A vertical guide port 48 is opened between the inner end portion of 45 and the inner end portion. Further, the upper end portion of the annular base 39 and the support projection piece
The connection hole 40 is provided between the lower end portion of the holding projection 43 and the 43.
An insertion groove that is located at the opening edge of the opening of the insertion opening 41 side
49 is formed horizontally.

Next, reference numeral 50 is a vertical rotation center shaft, and this rotation center shaft 50 is slidably fitted in the shaft sliding hole 37 of the stopper 34, The tip portion 51 of the shaft 50 is adapted to be fitted into the fitting hole 18 of the bearing body 15 supported by the bearing support body 13 from above. Further, the rotation center shaft 50 has a connecting shaft portion 52 having a diameter reduced from that of the rotation center shaft 50 at a base end portion thereof, that is, a portion in the vicinity of an upper end thereof. A disc-shaped flange 53 having a diameter larger than that of the shaft portion 52 is integrally formed.

Then, the connecting shaft portion 52 of the rotation center shaft 50.
Is press-fitted into the connection hole 40 from the insertion opening 41 of the holder 38, and the flange 53 of the rotation center shaft 50 is inserted from the insertion opening 41 side of the holder 38 into the insertion groove 49 of the holder 38. And the annular base body 39 between the flange 53 and the reduced diameter step portion 54 at the lower end portion of the connecting shaft portion 52.
The upper and lower parts of the upper and lower parts are clamped, and therefore, the upper end of the vertical pivot shaft 50 is fixed to the holder 38.

Next, 55 is a cap body made of synthetic resin, and this cap body 55 is fitted to the upper end portion of the hollow cylindrical body 31. The cap body 55 has a disc-shaped closing plate 56 that closes the upper end of the hollow cylindrical body 31, and one side of the closing plate 56 is elastically deformed to enter and leave the guide port 48 of the holder 38. A support plate 57 capable of projecting downward is integrally projected, and a support portion which is detachably engaged with a locking hole 44 formed in the support protrusion 43 of the holder 38 at the lower end of the support plate 57. 58 are projected integrally. The support portion 58 has a horizontal portion 59 that engages with the upper end portion of the locking hole 44 and a tapered surface 60 that is slanted downward toward the inside where the upper end portion of the support projection 43 slides.

Further, an operating portion 61 is integrally provided on the support plate 57 so as to be located at a substantially middle portion in the vertical direction and extends in the horizontal direction. The operating portion 61 is inserted in a guide hole 33 formed in the hollow cylindrical body 31 so as to be able to move back and forth from the inside to the outside. Then, the operation portion 61 is moved to the guide hole 33.
By pushing toward the hollow portion 32 along
The support plate 57 is elastically deformed, and the support portion 58 at the lower end of the support plate 57 is moved toward the center of the hollow portion 32.

A cylindrical body having a fitting hole 62 facing the fitting hole 47 of the holder 38 is formed on the other side of the closing plate 56.
63 is integrally provided so as to project downward, and an end portion of a coil spring described later is engaged with a lower surface portion 64 of the closing plate 56 that closes the upper end portion of the fitting hole 62.

Further, insertion projecting pieces 65 which are located on both sides of the cylindrical body 63 and are inserted into the hollow portion 32 of the hollow cylindrical body 31 are opposed to the closing plate 56 so as to integrally face downward. It is projected. The cap body 55 has a plurality of vertical ribs 66 projecting from the upper portion of the opposing insertion projection piece 65 and both side portions of the support plate 57, and the cylindrical body 63 is the upper end of the hollow cylindrical body 31. The operation portion 61, which is fitted into the upper end portion of the hollow cylindrical body 31 by being press-fitted into the portion, and which is projected from the cap body 55, is fitted in the guide hole 33 so as to be able to move back and forth.

Further, a coil spring 67 extending vertically is disposed between the opposed insertion projections 65 of the cap body 55, and the lower end portion of the coil spring 67 is the bottom portion of the fitting hole 47 of the holder 38. Engaged with 46,
The upper end of the coil spring 67 closes the upper surface of the fitting hole 62 formed in the cap body 55, and the lower surface of the closing plate 56.
64 is engaged.

The holder 38 is always urged downward by the coil spring 67, and the lower end of the holder 38 is locked to the upper end of the cylindrical portion 35 of the stopper 34. A tip portion 51 of the rotation center shaft 50 fixed to the holder 38 is adapted to project downward from the hollow cylindrical body 31.

Thus, the support plate 57 having the support portion 58 and the operation portion 61 projecting from the cap body 55, and the support portion
A support projection 43 having a locking hole 44 of the holder 38 with which the holder 58 is detachably engaged, a guide hole 33 of the hollow cylindrical body 31 into which the operation portion 61 is inserted so as to be able to move forward and backward, and the coil. spring
67 and 67, a support mechanism 68 that supports the holder 38 that stores the coil spring 67 and releases the support is configured.

Next, the lower plate case 70 is fixed to the embedded recess 69 formed at the lower end of the opening edge of the fixed frame body 1 by a plurality of mounting screws 71, and the lower plate case 70 is also attached. A fixed plate 72 is connected to the fixed plate 72, and a pivot shaft 74 is integrally provided on the upper end of a vertical shaft support 73 formed at the outer end of the fixed plate 72 so as to project upward. The pivot shaft 74 corresponds to the shaft support 73.
Has a fitting tubular portion 75 fitted and fixed downward from above, and a flange 76 engaged with the upper end portion of the shaft support 73 is integrally formed at the upper end portion of the fitting tubular portion 75. Has been done.

A cover body 78 having an insertion hole 77 through which the pivot shaft 74 is inserted is integrally fitted to the upper end of the shaft support 73. Further, a cap body 79 is screwed to the lower end of the shaft support 73. Thus, the lower plate case 70 has the structure of the plate case 4 fixed to the upper end of the fixed frame body 1 and the fixed plate case.
Since 72 has the same structure as the structure of the one mounting plate 3, the reference numerals used in the description of the plate case 4 and the one mounting plate 3 are entered to describe the lower plate case 70 and the fixed plate 72. Omit it.

Next, in the fitting recess 80 formed at the lower end of the one end face of the door body 26 in the width direction, a movable plate is provided.
81 is fixed with a plurality of mounting screws 82, and this movable plate
A hollow cylindrical body 83 is formed in the vertical direction at the outer end portion of 81. Further, since the movable plate 81 having the hollow cylindrical body 83 has the same structure as the structure of the other mounting plate 28, the movable plate 81 will be described by entering the reference numerals used in the description of the other mounting plate 28. Is omitted.

A vertical adjustment block 84 is fitted in the hollow cylindrical body 83 from below to above, and the vertical adjustment block 84 is fitted with a vertical fitting hole into which the pivot shaft 74 is fitted. 85 is formed by expanding the lower surface. A bearing body 86 that engages with the upper end portion of the pivot shaft 74 is fitted in the fitting hole 85 so as to be vertically movable.
An adjusting screw 87 for vertically adjusting the bearing 86 is screwed in the fitting hole 85 located at the upper part of the shaft so as to be vertically movable by rotation. Further, a cap body 88 is fitted on the upper end portion of the hollow cylindrical body 83.

In this way, the rotation center axis 50 of the hollow cylindrical body 31 fitted in the fitting hole 18 of the bearing support 13 and the fitting hole 85 of the hollow cylindrical body 83 are fitted. The pivot shaft 74 is arranged on the same vertical axis, and the door body 26 is opened and closed with respect to the fixed frame body 1 about the upper and lower rotation center shafts 50 and the pivot shaft 74. Has become.

Next, the operation of the above embodiment will be described.

A plate case 4 having one mounting plate 3 is fixed to a buried recess 2 formed at the upper end of the fixed frame 1 with a plurality of mounting screws 5. Further, the lower plate case 70 having the fixing plate 72 is fixed to the embedded recess 69 formed in the lower end portion of the fixed frame body 1 by a plurality of mounting screws 71.

Further, the rectangular plate body 30 of the other mounting plate 28 is fixed to the fitting recess 27 formed at the upper end of the door body 26 by a plurality of mounting screws 29. Further, the rectangular plate body of the movable plate 81 is fixed to the fitting concave portion 80 formed at the lower end portion of the door body 26 by a plurality of mounting screws 82.

The hollow cylindrical body of the other mounting plate 28
When the rotation center shaft 50 is pushed into the inside 31, the holder 38 is pushed toward the cap body 55 of the support mechanism 68 by the rotation center shaft 50 against the coil spring 67 and lifted. Then, with this holder 38, the coil spring 67
Is gradually stored, and the upper end portion of the support protrusion 43 of the holder 38 is tapered on the support portion 58 of the support plate 57.
The upper surface of the support projection 43 is abutted against the tapered surface 60.
The taper surface 60 is pushed up in the horizontal direction along the upward direction, and the support plate 57 is elastically deformed in the horizontal direction at the upper end of the support projection 43 via the support portion 58.

Thus, while the coil spring 67 is largely stored in the holder 38, the upper end portion of the supporting projection piece 43 of the holder 38 passes through the tapered surface 60 of the supporting portion 58, and the supporting projection piece 43. The locking hole 44 of the support plate 58 is raised to the position of the support part 58, the pushing motion of the support plate 57 is released, the support plate 57 elastically returns, and the support part 58 of the support plate 57 engages with the support projection 43. Stop hole 44
It is fitted inside and the horizontal hole 59 of this support 58 holds the locking hole 44.
The upper end of is locked and therefore the coil spring 67
The holder 38 that stores a large amount of energy is supported by the support portion 58 of the support plate 57. Further, the holder 38 supports the coil spring 67 with a large amount of energy stored therein, and the tip 51 of the rotation center shaft 50 fixed to the holder 38 retracts into the stopper 34 at the lower end of the hollow cylindrical body 31. To be done.

Next, with respect to the upward pivot shaft 74 projecting from the shaft support 73 of the fixed plate 72 fixed to the lower end of the fixed frame 1, the movable plate 81 fixed to the lower end of the door 26 is provided. Vertical adjustment block fitted and fixed to the hollow cylindrical body 83 of
The fitting holes 85 of 84 are fitted from above. In this case, since the fitting hole 85 of the vertical adjustment block 84 is formed by expanding the lower surface, the pivot shaft 74 is smoothly fitted into the fitting hole 85.

Then, the door body 26 is horizontally moved toward the fixed frame body 1 about the pivot shaft 74, and the bearing support body 13 of the one mounting plate 3 attached to the upper end portion of the fixed frame body 1 is moved. The door body 26 is inserted into the fitting hole 18 of the bearing body 15 fixed to
The tip end portion 51 of the revolving central shaft 50 is aligned in the hollow cylindrical body 31 attached to the upper end portion of the.

Next, the operation portion 61 of the support mechanism 68 is set in the guide hole 33.
When the pushing operation is performed toward the center of the hollow portion 32 of the hollow tubular body 31 along the direction, the operating portion 61 causes the support plate of the cap body 55 to be supported.
57 is pushed and elastically deformed, the support portion 58 at the lower end of the support plate 57 is moved toward the center of the hollow portion 32, and the horizontal portion 59 of the support plate 57 causes the support projection of the holder 38 to project. The holder 38 is released from the locking hole 44 of the 43, and the support of the holder 38 is released.

When the support of the holder 38 is released,
The holder 38 is pushed downward by the restoring force of the coil spring 67 stored in the holder 38 to project the rotation center shaft 50, and the holder 38 moves downward in the hollow portion 32 of the hollow cylindrical body 31. The distal end portion 51 of the rotation center shaft 50 that is moved toward the holder 38 and fixed to the holder 38 is automatically inserted from the lower end portion of the hollow cylindrical body 31 into the fitting hole 18 of the bearing body 15 of the one mounting plate 3. The lower end of the holder 38 is engaged with the upper end of the tubular portion 35 of the stopper 34 provided at the lower end of the hollow tubular body 31.

In this case, since the fitting hole 18 of the bearing body 15 supported by the one mounting plate 3 is formed by expanding the upper surface, the rotation center shaft 50 is formed with respect to the fitting hole 18. Tip 51
Can be fitted smoothly.

Therefore, the one mounting plate 3 fixed to the upper end of the fixed frame 1 and the other mounting plate 28 fixed to the upper end of the door 26 can be freely opened and closed by the rotation center shaft 50 with one touch. It is pivotally supported and the fixed frame 1 has a door 26
Can be easily attached, and the door 26 can be smoothly opened and closed.

Next, when it is necessary to adjust the height of the door body 26, a movable plate fixed to the lower end portion of the door body 26 is used.
The cap body 88 fitted to the hollow cylindrical body 83 of 81 is removed.
When the adjusting screw 87 screwed to the vertical adjusting block 84 in the hollow tubular body 83 is rotated from above, the adjusting screw 87 is moved up and down, and the pivot shaft 74 is moved by the adjusting screw 87. The bearing body 86 supporting the upper end of the is vertically adjusted. Further, the height of the door body 26 is adjusted by vertically adjusting the bearing body 86. Therefore, the adjusting screw
The height of the door 26 is easily adjusted and set by rotating 87. Then, the cap body 88 is fitted into the hollow cylindrical body 83.

When the door 26 needs to be adjusted back and forth, it is fixed to the adjusting screw 10 of the plate case 4 fixed to the upper end of the fixed frame 1 and the lower end of the fixed frame 1. When the adjusting screw 10 of the lower plate case 70 is moved back and forth with respect to the screw holes 8 of the respective supporting projections 7, the large-diameter heads 9 of the upper and lower adjusting screws 10 are used to mount the respective mounting plates. 3 and the fixed plate 72 are rotationally adjusted in the front-rear direction about each mounting shaft 11. Therefore, the door body 26 can be easily adjusted back and forth by turning the upper and lower adjusting screws 10.

Next, in the above embodiment, the plate case 4 having the one mounting plate 3 at the upper end of the fixed frame body 1 is used.
And the other mounting plate 28 having a pivoting center shaft 50 that fits into the fitting hole 18 of the one mounting plate 3 is fixed to the upper end portion of the door body 26.
At the lower end of the pivot plate 74 through the lower plate case 70
The fixed plate 72 having the above is fixed, and the movable plate 81 having the fitting hole 85 into which the pivot shaft 74 is fitted is fixed to the lower end portion of the door body 26. However, the present invention is not limited to this, and the fixed frame is not limited thereto. The door opening / closing device may be further attached to the body 1 and the door body 26 at substantially intermediate portions in the vertical direction.

That is, the plate case 4 having one mounting plate 3 is fixed to a substantially middle portion of the fixed frame body 1 in the vertical direction, and the one mounting plate 3 is mounted to a substantially middle portion of the door body 26 in the vertical direction. Rotation center axis that fits in the fitting hole 18
The other mounting plate 28 having 50 is fixed.

With this structure, the fitting hole 85 of the movable plate 81 attached to the lower end portion of the door body 26 is upwardly attached to the pivot shaft 74 of the fixed plate 72 attached to the lower end portion of the fixed frame body 1. Then, the door 26 is horizontally moved toward the bearing support 13 at the upper end portion and the intermediate portion of the fixed frame body 1 about the pivot shaft 74 as in the above-described embodiment. The upper end portion of the door body 26 and the tip end portion 51 of the rotation center shaft 50 of the middle portion are aligned with the fitting holes 18 of the bearing support body 13 of the portion.

Then, the operating portions 61 of the guide holes 33 formed in the hollow cylindrical body 31 at the upper end portion and the intermediate portion of the door body 26 are pushed and operated in the same manner as in the above-mentioned embodiment, whereby the fixed frame body is formed. 1 into the fitting holes 18 of the bearing support 13 at the upper end portion and the intermediate portion, and the tip end portions 51 of the respective rotation center shafts 50 at the upper end portion and the intermediate portion of the door body 26.
Are easily fitted together.

Next, in the above embodiment, the plate case 4 having one mounting plate 3 is fixed to the fixed frame body 1, and the other mounting plate 28 having the rotation center shaft 50 is the door body.
I explained the case of sticking to 26, but not limited to this,
The plate case 4 having one mounting plate 3 is a door body
The other mounting plate that is fixed to 26 and has a rotation center axis 50
28 may be fixed to the fixed frame body 1.

With this structure, the door body 13 is attached to the fixed frame body 1 simply and smoothly so that it can be opened and closed and rotated by one touch, as in the case of the above-described embodiment.

Further, in the above embodiment, the rotation center shaft 50 attached to the other mounting plate 28 is fitted into the fitting hole 18 of the bearing body 15 fitted to the bearing support 13 of the one mounting plate 3. Although the case where the tip portion 51 is fitted from above has been described, the present invention is not limited to this, and the one mounting plate 3 and the other mounting plate 28 are turned upside down and fixed to the fixed frame body 1 or the door body 26, respectively. The tip end portion 51 of the rotation center shaft 50 attached to the other mounting plate 28 may be fitted into the fitting hole 18 of the bearing body 15 of the one mounting plate 3 from below.

With this structure, the door body 13 can be attached to the fixed frame body 1 easily and smoothly so that it can be opened and closed and rotated with one touch, as in the above-described embodiments.

[0065]

According to the first aspect of the invention, the tip end of the rotation center shaft provided in the fitting hole of the bearing body supported by the bearing support body of the one mounting plate in the hollow cylindrical body of the other mounting plate. By aligning the parts and pushing the operation part of the support mechanism provided in the guide hole of this hollow cylindrical body,
Support of the holder by the support portion of this support mechanism is released, this holder is pushed by the return force of the spring, and the tip of the rotation center shaft fixed to this holder is moved from the end of the hollow cylindrical body. It is automatically fitted in the fitting hole of one of the mounting plates, and the other mounting plate is pivotally supported on the one mounting plate easily and freely openable and closable by this rotation center shaft. Therefore, the other member such as the door member can be easily attached to one member such as the fixed frame member on one side such as the doorway by one-touch operation, and the on-site installation work is easy and the work efficiency can be improved. .

Therefore, even when a protruding member such as a frame is provided on the upper portion of one member such as the fixed frame member, the other member such as the door member is attached to one member without being obstructed by the protruding member. The member of can be easily attached with one touch, and when this door is closed, there is no large unsightly gap between the upper end of the door and the frame, and the appearance can be prevented from being impaired. . Therefore, it is possible to provide a door opening / closing device that is easy to handle and has excellent workability.

According to the second aspect of the present invention, when the operation portion of the support mechanism is pushed, the support plate is elastically deformed by the operation portion, and the support portion at the end of the support plate engages with the holder. It is possible to securely disengage from the stop hole and to release the support of the holder that has stored the spring, and to securely engage the support part of the support plate that elastically returns into the locking hole of the holder to store the spring. The biased holder can be reliably supported.

According to the third aspect of the present invention, the center axis of rotation can be stably moved up and down by the annular base body of the holder, and the fitting hole formed in the holding projection projecting on the holder is provided. The end portion of the spring can be securely held, and the end portion of the spring can be prevented from being displaced due to the vertical movement of the holder.

[Brief description of drawings]

FIG. 1 is a front view of a door opening / closing device showing an embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is an enlarged cross-sectional view showing a state in which the rotation center shaft is fitted together.

FIG. 4 is a cross-sectional plan view of the door opening / closing device in which one member is attached to the other member.

FIG. 5 is an exploded perspective view showing the same support mechanism.

FIG. 6 is a cross-sectional view of the same cap body.

FIG. 7 is a plan view of the same holder.

FIG. 8 is a front view of the same.

FIG. 9 is a sectional view of the same.

FIG. 10 is an explanatory diagram in which one mounting plate pivotally supports the other mounting plate.

FIG. 11 is an explanatory diagram in which a movable plate is axially supported by a fixed plate.

FIG. 12 is a cross-sectional view in which a movable plate is axially supported by the fixed plate.

FIG. 13 is a front view of a door opening / closing device showing another embodiment.

FIG. 14 is a sectional view of the same.

[Explanation of symbols]

1 One member 3 One mounting plate 13 Bearing support 15 Bearing body 18 Mating hole 26 The other member 28 Other mounting plate 31 hollow cylinder 33 guide hole 34 Stopper 38 holder 39 annular substrate 43 Support protrusion 44 Locking hole 45 Hugs 47 Mating hole 50 rotation center axis 51 Tip of rotation center axis 57 Support plate 58 Support 61 Operation part 67 spring 68 Support mechanism

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Claims (3)

(57) [Claims] 1. A mounting plate to be mounted on one member, another mounting plate to be mounted on the other member, and a vertical rotation for pivotally supporting the one mounting plate and the other mounting plate. A bearing body having a fitting center hole, wherein the one mounting plate is located at an end portion on the side of the other mounting plate, and has a fitting hole into which a tip end portion of the rotation center shaft is fitted. A bearing support member that is supported, and the other mounting plate is provided in a hollow cylindrical body formed at an end portion of the one mounting plate side, and vertically movable in the hollow cylindrical body. A holder to which the rotation center shaft is fixed, and the holder, which is provided inside the hollow cylindrical body, constantly urges the rotation center shaft to project the tip of the rotation center shaft from the hollow cylindrical body. The spring and the hollow cylindrical body A stopper that locks the holder biased by the spring, a support portion that is provided in the hollow tubular body and that supports the holder that stores the spring, and an operation portion that releases the support of the holder. A door opening / closing device having a support mechanism formed with. 2. The support mechanism is engaged and disengaged with an elastically deformable support plate projecting from the end of the hollow cylindrical body and a locking hole projecting from the end of the support plate and formed in a holder. It has a support part which engages freely, and an operation part which is inserted in a guide hole which is projected from the support plate and is formed in the vicinity of one end of the hollow cylindrical body so as to be able to move back and forth. The door opening / closing device according to Item 1. 3. The holder comprises an annular base body which is vertically movable in a hollow cylindrical body and has a base end portion of a rotation center shaft fixed thereto.
An up-and-down support projecting piece projecting from one side portion of the annular base body to form a locking hole, and an end portion of a spring projecting from the other side portion of the annular base body facing the supporting projecting piece. The door opening / closing device according to claim 1 or 2, further comprising: a holding projection having an engaging hole formed therein.