JP2003343168A - Door opening/closing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening/closing apparatus which has doors thereof vertically moved to be opened/closed at an upper portion of an opening, dispenses with installation of a door storage case, allows arbitrary setting of the height of the doors and the number of the same, and exhibits neat and simple design. <P>SOLUTION: The door opening/closing apparatus is formed of the plurality of doors 2 arranged in an opening side by side in the vertical direction, guide rails arranged on both right and left sides of the opening, for guiding the doors 2 while maintaining the doors 2 in a drooping state, a lifting means for vertically lifting/lowering the doors 2 in the drooping state along the guide rails, and a rotating means for rotatively opening the doors which have reached the upper portion of the opening by the lifting operation of the lifting means, in a manner protruding the doors frontward F in sequence beginning from the upper one. Each door 2 has a door shaft 8 attached to an upper edge of a door plate 2a via a door frame 15 and a slip-out preventive fixture 17. The door frame 15 has a door plate mounting slot 16, a bearing portion 20, and a fitting slot 19. The slot 16 allows the upper edge of the door plate 2a to be fitted thereinto. The bearing portion 20 rotatably bears the door shaft 8 in cooperation with the slip-out preventive fixture 17. The fitting slot 19 allows a fitting piece 18 formed at the slip-out preventive fixture 17 to be fitted thereinto. <P>COPYRIGHT: (C)2004,JPO

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 used for, for example, a cupboard of a system kitchen or a closet for storage, and relates to a door which is electrically moved up and down and rotated at the top to open and close.

[0002]

2. Description of the Related Art Conventionally, as a closet door or a cabinet door, there is known an opening / closing door which is formed by bending two even-numbered doors in a pair and opening / closing in a lateral direction.

Further, as a door for moving up and down, there is known a door which is wound around a door pocket (top bag) like a roll screen or a shutter.

[0004]

However, in the conventional door that opens and closes in the lateral direction, if an obstacle is placed in front of the door when it is opened, it may be impossible to open the door. There was a restriction to set the height and number of doors that could not be freely set.

On the other hand, in the case of a roll screen, a shutter, etc., it is necessary to separately install a door bag on the upper part, and there is a problem that the storage space is narrowed by the door bag, and in addition, ground glass cannot be used from the viewpoint of strength. There was also a problem.

[0006] In the current frosted glass door, an aluminum frame is attached so as to surround the entire circumference of the frosted glass from the viewpoint of strength, and the frosted glass is mainly sandwiched with rubber or the like. For this reason, the aluminum frame occupies a large area and is not a clean design.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional example, and its purpose is to raise and lower the door and open and close the upper part,
The behavior of opening and closing the door does not affect the surroundings, and there is no need to install a door pocket on the top, and besides, the height and number of doors can be freely set, and in terms of design It is to provide a door opening / closing device that can be made clean.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, according to the present invention, a plurality of doors 2 are vertically provided in an opening 1, and doors 2 are vertically arranged on both left and right sides of the opening 1. A guide rail 3 for vertically guiding the door is provided, and an elevating means 5 for vertically elevating and lowering each door 2 along the guide rail 3 in a hanging state, and an elevating means 5 pulling the door 2 to the upper portion 1a of the opening 1. Rotating means 6 for rotating and opening the reached door 2 so as to project forward F from the top,
In the door 2, the door shaft 8 is attached to the upper end of the door plate 2a via the door frame 15 and the retaining metal fitting 17, and the door frame 15 has a recess for door plate attachment in which the upper end of the door plate 2a fits. Groove 1
6, a bearing portion 20 that rotatably supports the door shaft 8 together with the retaining metal fitting 17, and a fitting groove 19 into which a fitting piece 18 provided on the retaining metal fitting 17 fits. With this structure, the door shaft 8 is rotatably attached to the door frame 15, so that the door 2 including an aluminum frame (door frame) and frosted glass (door body), which is excellent in design, can be formed. At the same time, when a downward rotational force is applied to the door frame 15, the door plate 2a rotates smoothly around the door shaft 8 as the center of rotation. Further, by fitting the fitting piece 18 of the retaining metal fitting 17 into the fitting groove 19 of the door frame 15, a downward force is applied to the door shaft 8 or a downward force received during rotation is applied to the retaining metal fitting 17. Even if the door frame 15 and the retaining metal 17 are not separated from each other, and the axial position of the door plate 2a is not displaced, the door 2 can be raised and lowered and rotated more smoothly.

Further, an adhesive reservoir 27 for accumulating an adhesive is provided in the door plate mounting recessed groove 16 and the lower end of the recessed groove front wall 66 forming the door plate mounting recessed groove 16 is provided with a recessed groove rear wall 67.
It is preferable that the adhesive projects from the lower end of the door plate downward. In this case, even if the adhesive remains in the door plate mounting recessed groove 16, the adhesive reservoir 27 prevents the adhesive from protruding to the outside. In addition to facilitating the management of the above, even if the adhesive leaks out from the gap between the door plate 2a and the door plate mounting recessed groove 16, the recessed groove front wall 66 can hide the leaked adhesive. Become.

Further, in the hanging state of the door 2, the bearing portion 20 for receiving the door shaft 8 is arranged rearwardly of the door plate mounting groove 16 so that the lower portion of the door plate 2a closes rearward by its own weight. In this case, the center of gravity of the door plate 2a is displaced rearward, and the door 2 in the hanging state exerts a force (self-weight) in the closing direction, so that the door 2 can be closed reliably. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

FIG. 4 is a perspective view of the door opening / closing device A of this embodiment as seen obliquely from the front and below, FIG.
Is a front view in which the door 2 is omitted, FIG. 7 is a perspective view of the vicinity of the motor 30, and FIG. 8 is a cross-sectional view illustrating the internal structure of the opening frame 80.

The door opening / closing device A of this embodiment is used for a storage part 4 such as a closet or a cabinet, and a plurality of doors 2 are vertically provided in an opening part 1 of the storage part 4, and the opening part is opened. As shown in FIG. 8, opening frames 80 extending in the vertical direction are provided on both left and right sides of the guide rail 1. Each of the opening frames 80 guides vertically the doors 2 arranged vertically in a hanging state. 3 is provided.

The door frame 15 is shown in FIG.
The retaining metal fitting 17 shown in (c) is attached. The retaining metal 17 includes a screwing portion 23 that is screwed to the lower portion of the door frame 15, a fitting piece 18 that fits in a fitting groove 19 of the door frame 15, and a bearing portion 20 to close the door shaft 8. A retaining portion 24 for stopping and a trigger 12 described later are integrally formed. An adhesive is applied to the door plate mounting groove 16 of the door frame 15 to join the upper end portion of the door plate 2a,
Further, with the fitting piece 18 of the retaining metal fitting 17 fitted in the fitting groove 19 of the door frame 15, a screw is screwed from the screw fastening portion 23 of the retaining metal fitting 17 into the door plate 2a in the recess 16 for installing the door plate. The door plate 2a, the door frame 15, and the retaining metal 17 are integrally fixed by being screwed into. Here, a protrusion 27a is provided in the back of the door plate mounting concave groove, and the protrusion 27a forms an adhesive reservoir 27 for aligning the door plate 2a and accumulating a surplus of adhesive. The door shaft 8 is rotatably held by the bearing portion 20 of the door frame 15 by the retaining portion 24 of the retaining member 17. Further, by arranging the bearing portion 20 for receiving the door shaft 8 so as to be displaced rearward of the door plate mounting groove 16, the lower portion of the door plate 2a can be closed aesthetically toward the rear side under its own weight in the hanging state of the door 2. It has become.

The door shafts 8 project to the left and right sides of the door plate 2a. The bottom door shaft 8 has a slide shoe 25 coupled to a drive belt 32, which will be described later, and the other door shafts 8 have drive belts. Slide shoe 25a not coupled to 32
Are attached respectively. Each slide shoe 2
As shown in FIG. 8, the slide shoes 25, 25 a are slidably fitted to a guide rib 26 provided in the guide rail 3 and having a T-shape in plan view.
The front-back, left-right, and left-side movements of a are restricted so that it can move only in the vertical direction. As the slide shoes 25, 25a move up and down, the door shaft 8 and the door 2 also move in the same manner.

On the other hand, on the side of the storage section 4, as shown in FIGS. 6 and 7, an elevating means 5 for vertically elevating and lowering each door 2 along the guide rails 3 in a hanging state, and a lifting operation by the elevating means 5. There is provided a rotating means 6 for rotating and opening the door 2 that has reached the upper portion 1a of the opening 1 so as to project the lower portion from the top to the front F in order.

First, the elevating means 5 includes a driving means 7 for driving the lowermost door 2 up and down, a plurality of vertically long joint plates 9 interconnecting the door shafts 8 of the doors 2, and the door 2 being opened. Locking means 10 for locking the door shaft 8 of the door 2 and the joint plate 9 so that the driving force of the lowermost door 2 is transmitted to the other door 2 through the joint plate 9 until reaching the upper portion 1a of the portion 1. A lock releasing means 11 is provided for releasing the lock between the door shaft 8 of the door 2 and the joint plate 9 when the door 2 reaches the upper portion 1a of the opening 1.

Here, the driving means 7 is, as shown in FIG.
It is composed of a forward / reverse rotatable motor 30, a relay shaft 31 extending in the horizontal direction, a pair of left and right drive belts 32, and the like. The motor 30 is arranged in the upper portion of the housing portion 4, and the output shaft of the motor 30 is transmitted to the relay shaft 31 via the gear trains 33 and 34. The relay shaft 31 is rotatably supported on the housing portion 4 side via a bracket 79, and both longitudinal ends of the relay shaft 31 are belt driven by toothed pulleys on both left and right sides via a coupling 35. Each of them is connected to a pulley shaft 37 of the pulley 36. Driven pulleys 38, which are toothed pulleys, are disposed on both sides of the lower portion of the storage portion 4, respectively. A drive belt 32, which is an endless annular timing belt, is wound between the right belt drive pulley 36 and the driven pulley 38, and between the left belt drive pulley 36 and the driven pulley 38. In this example, only the slide shoes 25 provided on the door shaft 8 of the lowermost door 2 are coupled to the left and right drive belts 32, respectively. As an example of the coupling method, as shown in FIG.
And the projecting piece 40 projecting from the belt fixing bracket 39 in a substantially U shape is locked in the locking groove 41 provided in the slide shoe 25, and the belt fixing bracket 39 is screwed to the drive belt 32. There is. In FIG. 8, 50 is a fixing rib for fixing the belt drive pulley 36, 51 is a space for housing the wiring component 52, and 53 is a cover member.

A plurality of joint plates 9 connecting the door shafts 8 of the doors 2 to each other are slidably held in a passage portion 60 provided in the guide rail 3. As shown in FIG. 8, the joint plates 9 are arranged so as to be overlapped with each other in the upper portion of the passage portion 60, with a predetermined pitch shift to the left and right.

Each joint plate 9 is shown in FIG.
As shown in FIG. 3, the joint plate 9 has a vertically long shape, and has lower end flange portions 9a, 9 protruding at both front and rear sides.
b is provided. A long hole 61 that is long in the vertical direction is formed in the joint plate 9, and a U-shaped lock groove 62 that communicates with the long hole 61 and is orthogonal to the long hole 61 is formed at the lower end of the long hole 61. . A shaft hole 63 that does not communicate with the elongated hole 61 is formed in the upper portion of the joint plate 9.

In this example, as shown in FIG. 12, the uppermost door shaft 8 is the shaft hole 6 of the second joint plate 9 from the top.
3. The long hole 61 of the uppermost joint plate 9 penetrating 3
Has been inserted inside. The door shaft 8 of the second step from the top penetrates the shaft hole 63 of the joint plate 9 of the third step from the top and is inserted into the elongated hole 61 of the joint plate 9 of the second step from the top. Similarly, the door shaft 8 of the third step from the top penetrates the shaft hole 63 of the joint plate 9 of the fourth step from the top and is inserted into the long hole 61 of the joint plate 9 of the third step from the top. There is. The lowermost door shaft 8 is inserted into the long hole 61 of the lowermost joint plate 9. In this example, as shown in FIGS. 13 to 14, the uppermost joint plate 9 is formed to have a vertical length shorter than that of the other joint plates 9. This shortens the ascending / descending distance of the uppermost door 2 connected to the uppermost joint plate 9,
This is to make the gap between the top surface portion 4a of the storage portion 4 and the uppermost door 2 as small as possible when the door 2 is closed.
Although the number of doors 2 is 5 and the number of joint plates 9 is 4 in the examples of FIGS. 9 to 15, the number of doors 2 is not limited to these numbers, and, for example, as shown in FIGS.
6 and the joint plate 9 may be 5, and the number of them can be arbitrarily changed.

Here, when the joint plate 9 raises the door 2, the load of the door 2 and the door shaft 8 and various sliding resistances are applied to push up the door 2 against them. Become. In particular, since the joint plate 9 in the lowermost stage receives all the load above it and pushes it up, it is necessary to have sufficient strength to support it. The material and strength of the joint plate 9 are set taking these factors into consideration.

When the door shaft 8 moves out of the lock groove 62 of the joint plate 9 into the elongated hole 61, when the lower joint plate 9 is pulled up by the door shaft 8, the lower joint plate 9 is pulled up. The lower end flange portion 9a or 9b of the joint plate 9 having the upper end of 9 above
There is a possibility that it will get caught and get caught. In order to prevent this, in the present example, a graining process (drawing process) is performed in the vertical direction along the long hole 61 of the joint plate 9. Here, along the longitudinal direction of the joint plate 9, the curved projection 6 having a margin larger than the thickness of the joint plate 9 is formed.
4 are formed, and the curved protrusion 64 ensures a necessary gap S between the joint plates 9.

Next, the lock means 10 and the lock release means 11 will be described. The lock means 10 and the door shaft 8 of the door 2 and the joint plate so that the driving force of the lowermost door 2 is transmitted to the other door 2 via the joint plate 9 until the door 2 reaches the upper portion 1a of the opening 1. In this example, as shown in FIG. 13 (a), it is composed of two upper and lower locking means 10a and 10b protruding from one side wall of the passage portion 60 with a predetermined thickness. There is. Here, the lower locking means 10b extends from the lower end of the passage portion 60 to the front of the upper portion of the passage portion 60, and the upper locking means 10a is provided separately above the lower locking means 10b. The upper locking means 10a is for locking the uppermost joint plate 9, and the lower locking means 10b is for the second and subsequent joint plates 9 from the top.
Is to lock. Upper and lower locking means 10a, 1
Each upper end surface 10c of 0b is a tapered surface so that the joint plate 9 can be smoothly locked or unlocked. In this example,
As shown in FIG. 13 (a), the lower locking means 10b
Is a lock switching member 96 for switching the ascending joint plate 9 to the unlocked position or for switching the descending joint plate 9 to the locked position.
And a lock holding plate member 97 for holding the joint plate 9 at the lock position. The lock holding plate member 97 has a vertically elongated plate shape, and is sandwiched and supported by a convex rib 66 (FIG. 8) protruding from the guide rail 3. The convex rib 66 causes something (vibration, vibration, etc.) after locking the joint plate 9 and the door shaft 8.
Even when a shock is applied, the lock holding plate 97 is held to eliminate the risk that the lock of the joint plate 9 is released, and the lock holding plate 97 is not affected by warping, and only a few points are fixed. Is to secure a stable distance from the joint plate 9 and to hold the lock.

Further, when each door 2 reaches the upper portion 1a of the opening 1, the lock release means 11 unlocks the door shaft 8 of the door 2 and the joint plate 9 in order from the top. In the present example, the lock releasing means 11 includes the passage portion 60.
Two upper and lower unlocking means 11 projecting from the other side wall
It is composed of a and 11b. The upper unlocking means 11a is located above the upper locking means 10a,
The lower unlocking means 11b is the upper and lower lock means 10.
It is located between a and 10b. Each unlocking means 1
The lower end surface 11c of each of 1a and 11b is a tapered surface so that the joint plate 9 can be locked or unlocked smoothly.

Next, the principle of the rotating means 6 will be described. As shown in FIG. 15, the rotating means 6 is composed of a trigger 12 provided on the upper and lower doors 2 side, and a door flip-up trigger contact member 13 hanging from the upper end of the storage section 4. The trigger 12 projects rearward of the door frame 15 and obliquely upward. The angle of the trigger 12 is set arbitrarily. The lower edge of the trigger contact member 13 is bent obliquely backward. Then, when the opening 1 is in the fully closed state, the upper and lower joint plates 9 are connected to each other as shown in FIG.
As shown in (a), the door shafts 8 of the doors 2 extend vertically in a long line in a row, and the lock grooves 6 of the joint plates 9 are provided.
2 and the drive belt 32 is rotated when opening the opening 1 from this state, the door shaft 8 is locked in the lock groove 62 of the joint plate 9,
As shown in FIG. 13 (b) → (d) and FIG. 14 (a) → (d), each joint plate 9 rises, and following this, all the doors 2 rise. When each door 2 is pulled up, the trigger 12 provided on each door 2
15 hits the trigger contacting member 13,
As shown in (a) → (k), the doors 2 are in front F in order from the top.
It is rotated and opened so as to project to
As shown in (l), all the doors 2 are held in a state of being vertically stacked.

Next, the operation will be described.

First, as shown in FIG. 9, each door 2 has an opening 1.
When located below the upper part 1a of the
As described above, each door 2 is in a suspended state due to its own weight, and the opening 1 is in a fully closed state. At this time, as shown in FIG. 13A, the upper and lower joint plates 9 extend vertically in a long line, and the door shafts 8 of the doors 2 are locked in the lock grooves 62 of the joint plates 9, respectively. There is. When opening the opening 1 from this state, the motor 30 is rotated in the forward direction by operating the switch. Then, the drive belt 32 rotates in one direction via the relay shaft 31.
As shown in (a) and (b), only the lowermost door 2 connected to the drive belt 32 is pushed up, and the lowermost joint plate 9 is locked to the door shaft 8 of the lowermost door 2. Is pushed up. At this time, the door shaft 8 of each door 2 is locked in the lock groove 62 of each joint plate 9, and the joint plate 9 is arranged above and below the lock means 1.
Since the upper and lower joint plates 9 are held by 0a and 10b, when the lowermost joint plate 9 is pushed up, all the joint plates 9 rise, and following this, all the doors 2 rise. At this time, each joint plate 9 is locked by the locking means 10a, 10
Since the lateral movement is restricted by b, the door shafts 8 and the joint plates 9 are securely locked, and the driving force from the lowermost door 2 is transmitted through the joint plates 9 to the door shafts 8. Is surely transmitted to. That is, FIG. 13 (a)
~ (D), the uppermost joint plate 9
The lower end flange portions 9a and 9b of the
By coming out upward from the upper end surface 10c of a and hitting the upper lock releasing means 11a, only the uppermost joint plate 9 pushes back one side wall of the passage portion 60 to the back,
The door shaft 8 of the uppermost door 2 is the uppermost joint plate 9
The door is disengaged from the lock groove 62 and rises in the long hole 61, and the distance between the uppermost door shaft 8 and the second door shaft 8 is shortened. In the same manner, as shown in FIGS. 14 (a) to 14 (d), by sequentially reaching the upper portion 1a of the opening 1 from the upper door 2,
The distance between the door shafts 8 is sequentially reduced, and the joint plates 9 are in a state of overlapping each other at the upper portion of the passage portion 60.

On the other hand, when the doors 2 lined up and down reach the upper portion 1a of the opening 1 in order from the top, the trigger 1 of the uppermost door 2 is opened.
When 2 hits the trigger contact member 13, a force to rotate the door shaft 8 forward F is applied, and as shown in FIG. 3, the door 2 rotates and opens so as to project forward F. Then, the trigger 12 of the second door 2 from the top is the trigger contact member 13
By hitting the lower edge of each of the doors 2, the doors 2 on and after the second stage also rotate forward F and open. At this time, when the door 2 rotates to an angle determined by the distance between the trigger 12 and the trigger contact member 13, the door 2 does not rotate further even if the door shaft 8 further rises, and the angle is maintained. It will continue to rise (Figs. 15 (b) to (k)). Finally,
As shown in FIG. 15 (l) and FIG. 10, all the doors 2 are flipped up to the front F and are in a full open state in which they are vertically stacked.

Next, when closing the opening 1, the motor 3
By rotating 0 in the reverse direction, each door 2 descends in the opposite operation. First, only the lowermost door 2 connected to the drive belt 32 descends, and the door shaft 8 descends in the long hole 61 of the lowermost joint plate 9 to push down the lowermost joint plate 9. As a result,
As shown in (l) → (k) → (j) → (i), the trigger 12 on the lowermost door 2 side is separated from the lower end edge of the trigger abutting member 13, and the lowermost door 2 is suspended by its own weight. Return to. Similarly, from the top, the doors 2 are sequentially locked in the lock grooves 62 of the joint plate 9 so that all the joint plates 9 extend vertically in a long line. All doors 2 as in (a)
Returns to drooping state.

By rotatably mounting the door shaft 8 on the door frame 15, the door plate 2a can be smoothly rotated about the door shaft 8 when a downward rotational force is applied to the door frame 15. It will be. Moreover, since the door plate 2a rotates smoothly, the load on the rotating means 6 and the like can be reduced. Further, by fitting the fitting piece 18 of the retaining metal fitting 17 into the fitting groove 19 of the door frame 15, a downward force is applied to the door shaft 8 or a downward force received during rotation is applied to the retaining metal fitting 17. Even if
The door frame 15 and the retaining bracket 17 do not separate,
Therefore, since the axial position of the door plate 2a does not shift, the door 2 can rotate more smoothly.

Further, by providing the adhesive accumulating portion 27 for accumulating the adhesive in the recess 16 for attaching the door plate, even if the adhesive remains, the adhesive does not overflow. Therefore, it becomes easy to manage the adhesive in the assembly process. Further, in this example, since the protrusion 27a is provided at the back of the door plate mounting recessed groove 16, it is easy to secure the adhesive reservoir 27. Further, when the door plate 2a is attached to the door frame 15, an adhesive is applied to the upper end portion of the door plate 2a or the door plate mounting groove 16 to insert the door plate 2a into the door plate mounting groove 16. At this time, since the protrusion 27a is provided in the back of the door plate mounting groove 16, the door 2 can be aligned by the protrusion 27a, and the protrusion 27a forms the adhesive reservoir 2727 for storing the remainder of the adhesive. Since it is secured, the door plate 2a can be easily and surely attached to the regular position. Further, by defining the height of the protrusion 27a (for example, 1 mm),
It is possible to regulate the insertion allowance of the door plate 2a into the door frame 15, which eliminates variations in the combined dimensions of the door frame 15 and the door plate 2a, and also manages the gap between the door frame 15 and the door plate 2a. It will be easy.

Further, as shown in FIG. 1 (b), the lower end of the groove front wall 66 forming the door plate mounting groove 16 is attached to the groove rear wall 6.
Since the step S is formed by projecting downward from the lower end of 7, that is, since the exterior side of the door plate mounting recessed groove 16 extends longer than the inner surface side, the adhesive temporarily assumes the door plate 2a.
Even if it leaks from the gap between the groove 16 for mounting the door plate and the door plate mounting groove 16, the groove adhesive can be hidden by the groove front wall 66.
The adhesive can be hidden from the outside. Therefore, an aluminum frame (door frame 15) with excellent design
The door 22 can be easily configured with the ground glass (door plate 2a).

Further, as shown in FIG. 1 (c), when the door 2 is in a hanging state, the bearing portion 20 for receiving the door shaft 8 is attached to the door plate so that the lower portion of the door plate 2a is closed rearward by its own weight. The door plate 2 is arranged so as to be shifted rearward of the groove 16.
When a is hung on the door frame 15, the center of gravity of the door plate 2a is displaced rearward, so that the door 2 is rotated in the direction indicated by the arrow a in FIG. A force (self-weight) comes to work toward. This makes the door 2
Can be securely closed in the drooping state, and there is no gap in appearance, and a neat appearance can be obtained. Further, the role of the retaining metal 17 is not only to prevent the center of rotation of the door frame 15 and the door plate 2a and the door shaft 8 for up and down movement from being separated from the door frame 15 and from being displaced from the normal position, It also works as a trigger for the rotation of 2. That is, the trigger 12 provided at the rear part of the retaining metal 17 causes the door 2 to rise and collide with the trigger contact member 13, and at the same time, the door 2 shifts from vertical movement to rotational movement to open and close the door 2. Since the metal fitting 17 functions as a trigger, the number of members can be reduced and the cost can be reduced.

Further, in this example, the door plate 2a is hung between the left and right door shafts 8, and the lateral displacement of the door frame 15 with respect to the door shaft 8 is controlled by the regulating screw 22 (FIG. 2). To prevent. That is, the left and right door frames 15 are connected by one connecting shaft 21, and the regulation screw 22 is applied to the tip of the door shaft 8 inserted into both ends of the connecting shaft 21.
Since the relative position between the door shaft 8 and the door frame 15 is regulated by the regulation screw 22, the lateral displacement of the door frame 15 with respect to the door shaft 8 can be regulated, and the door 22 is always moved up and down at the regular position. It becomes possible to rotate. Therefore, the door 2
2 can always be lifted and rotated in a well-balanced manner.
It should be noted that instead of the regulation screw 22, a restriction may be provided on the connecting shaft 21, or a relative position between the door shaft 8 and the connecting shaft 21 may be restricted by using a pad or a clip. It is sufficient that variation in the lateral position of the door plate 2a with respect to the door shaft 8 can be suppressed.

In the above embodiment, the motor 22 is used to drive the door 22, but the door 22 is not limited to the electric type, but may be driven manually. For example, connect the wire cable to the belt drive pulley 36,
By manually winding or rewinding the wire cable, it is possible to manually rotate the drive belt 32 to move the door 22 up and down.

[0037]

As described above, according to the first aspect of the invention, a plurality of doors are vertically provided in the opening, and the doors vertically arranged on the left and right sides of the opening are vertically guided in a hanging state. Guide rails are installed, and each door is lifted up and down along the guide rails in a hanging state, and the doors that reach the upper part of the opening by the lifting means rotate to project forward from the top in order. The door shaft is attached to the upper end of the door plate via the door frame and the retaining metal fitting, and the upper end of the door plate is fitted to the door frame. Since there are a groove for plate mounting, a bearing that rotatably supports the door shaft together with the retaining metal fitting, and a fitting groove into which the fitting piece provided on the retaining metal fitting fits, each door is suspended. The door is lifted up and down and the door is rotated at the top of the opening. By opening so that it protrudes forward, the opening and closing behavior of the door does not affect the surroundings, there is no restriction on the installation location and there is no need to install a door pocket. . Moreover, by rotatably attaching the door shaft to the door frame, it is possible to construct a door with excellent design, which is made of, for example, an aluminum frame (door frame) and frosted glass (door body), and the downward rotation force is applied to the door frame. When added, the door plate can be smoothly rotated with the door shaft as the rotation center, and the smooth rotation of the door plate can reduce the load on the rotating means and the like. In addition, by fitting the fitting piece of the retaining metal fitting to the fitting groove of the door frame, even if downward force is applied to the door shaft or downward force received during rotation is applied to the retaining metal fitting, Since the retaining metal does not separate from the retaining metal fitting, and the axial position of the door plate does not shift, the door can be raised and lowered and rotated smoothly.

In addition to the effect of claim 1, the invention according to claim 2 provides an adhesive accumulating portion for accumulating an adhesive in the recess for installing the door plate and forming the recess for installing the door plate. Since the lower end of the front wall of the recessed groove is projected below the lower end of the rear wall of the recessed groove, even if the adhesive remains in the recess for mounting the door plate, the adhesive reservoir prevents the adhesive from leaking out. Management of the adhesive in the assembly process becomes easy. Even if the adhesive leaks out from the gap between the door plate and the door plate mounting groove, the leaked adhesive can be hidden by the front wall of the groove so that the adhesive cannot be seen from the outside. The appearance can be excellent.

In addition to the effect of claim 1, the invention according to claim 3 further comprises a bearing portion for receiving the door shaft so that the lower portion of the door plate closes rearward under its own weight in the hanging state of the door. Since the parts are arranged rearward of the recess for mounting the door plate, the center of gravity of the door plate shifts to the rear, and a force (self-weight) acts on the door in the hanging state in the closing direction. . As a result, the door can be reliably closed, no gaps are formed, and a neat appearance is obtained.

[Brief description of drawings]

1A is an embodiment of the present invention, a side view of a door frame and a retaining metal fitting after assembly, FIG. 1B is a side view of a door frame, and FIG. 1C is a side view of a door with a retaining metal fitting. Is.

FIG. 2 (a) is a plan view of the above door with a part of the door omitted;
(B) is a partially omitted front view.

FIG. 3 is an explanatory diagram of a rotating state of the door of the above.

FIG. 4 is a perspective view of the door opening / closing device as viewed from diagonally below and front.

FIG. 5 is a perspective view of the above door opening / closing device as seen obliquely from below and rearward.

FIG. 6 is a front view in which the door of the above is omitted.

FIG. 7 is a perspective view of the vicinity of the motor of the above.

FIG. 8 is a cross-sectional view of the guide rail of the same.

FIG. 9 is a perspective view showing a state in which the above doors are closed.

FIG. 10 is a perspective view showing a state in which each door of the same is opened.

11A is a front view of a joint plate, FIG.
(B) is a BB line sectional view of (a).

FIG. 12 is an explanatory view of a connected state by the door shaft of the above.

13 (a) to 13 (d) are explanatory views of a raising operation of the joint plate of the above.

14 (a) to (d) are explanatory views of a rising operation of the above joint plate.

15 (a) to (l) are explanatory views of a rotating operation of the door of the above.

16 (a) to 16 (c) are explanatory views of a state where the doors are in a hanging state in the case where there are six doors and five joint plates in the same.

17 (a) to (c) are explanatory views of a state in which the doors are opened in the case where there are six doors and five joint plates in the same.

[Explanation of symbols]

1 opening 1a upper part 2 doors 2a door plate 3 guide rails 4 storage 5 lifting means 6 rotation means 8 door axis 15 door frame 16 Door plate mounting groove 17 retaining bracket 18 Mating piece 19 Fitting groove 20 Bearing 27 Adhesive reservoir 66 concave groove front wall 67 Rear wall of the groove F front

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tetsuji Niiyama             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Katsuyuki Okumura             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Yoshiro Matsushita             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company

Claims (3)

[Claims] 1. A plurality of doors are vertically provided in the opening, and guide rails for vertically guiding the vertically arranged doors are provided on both left and right sides of the opening, and the guide rails are provided in the respective hanging states. Elevating means for moving up and down along, and a rotating means for rotating and opening the door that has reached the upper part of the opening by pulling up by the elevating means so as to project forward from the top in order, the door, The door shaft is attached to the upper end of the door plate via the door frame and the retaining bracket, and the door shaft is rotatable together with the door plate mounting groove on which the upper end of the door plate fits, and the retaining bracket. A door opening / closing device, comprising: a bearing portion that is supported by the housing; and a fitting groove into which a fitting piece provided in the retaining metal fitting fits. 2. A door accommodating groove is provided with an adhesive accumulating portion for accumulating an adhesive, and a lower end of a front wall of the concave groove forming the concave groove for installing the door plate is lower than a lower end of a rear wall of the concave groove. The door opening / closing device according to claim 1, wherein the door opening / closing device is projected. 3. A bearing portion for receiving a door shaft is arranged so as to be displaced rearward of a recess for mounting a door plate so that a lower portion of the door plate is closed rearward by its own weight in a hanging state of the door. The door opening / closing device according to claim 1.