JPH09158603A - Automatic closing device of sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of a bob body, and easily adjust dead weight, reduce backlash between the bob body and a hollow part, and simplify a shape of the hollow part. SOLUTION: In a bob body 8 which is installed in a string 73 suspended in a hollow part 71 of a sliding door 4 and is disposed so as to be vertically loosely movable, a bending part 812 is formed by respectively bending front and rear both ends of a base part 811 being a plate at a specific bending angle 812a in the inverse direction, and four rollers 82 are pivotally fixed to this bending part 812, and the bending angle 812a of the bending part 812 is preadjusted so that upper side rollers 82a roll by coming into contact with the vicinity of corner parts 71a of a hollow part 71.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door self-closing device used in a sliding door that is opened and closed by sliding movement.

[0002]

2. Description of the Related Art In recent hospitals and the like, sliding doors are used to slide the doors in order to facilitate the movement of wheelchairs, and a simple self-closing device is used to facilitate the opening and closing operations of these sliding doors. It is desired to have it.

As a conventional device for automatically closing a sliding door, for example,
It is known that a rail part fixed near the upper end of the sliding door is provided with an inclination so that the sliding door in the opened state returns to the closed position by its own weight. However, with such a sliding door self-closing device, there is a problem that it is necessary to perform a delicate inclination angle setting of the rail portion in accordance with the self-weight of the sliding door in order to obtain an appropriate self-closing force. .

As another aspect, a vertically extending hollow portion is provided inside the sliding door, and an entrance opening communicating with the hollow portion is opened at an upper end of the sliding door so that the entrance is located inside the hollow portion. There is one in which a string is hung and a flat weight body is attached to the lower end of the string to support the hollow portion so as to be vertically movable in the hollow portion. The upper end of the cord is fixed to a rammer portion that is fixed to the rail portion at a front end side slightly above the entrance position at a closed position, substantially directly above the extension line of the entrance traffic line. By doing so, the weight body is configured to move upward as the opening width of the sliding door increases, and a constant self-closing force is applied to the sliding door by the weight of the weight body in the direction in which the opening width becomes smaller. Configured to do so.

[0005]

However, such a sliding door self-closing device has a drawback that the weight body is difficult to operate properly.

That is, in order to apply an appropriate self-closing force to the sliding door, it is necessary to adjust the own weight of the weight body in accordance with the own weight of the sliding door, but to give the own weight to the flat plate-like weight body. Excessive longitudinal length and vertical length are required, and the size and shape of the applicable sliding door are limited. Although it is possible to increase the weight of the weight by increasing the thickness of the weight, it is difficult to cut the weight so that it is difficult to adjust the weight. In addition, in the flat weight body, rattling with the hollow portion is inevitably increased, which not only makes the running noise of the sliding door loud but also makes it difficult to perform proper movement. There is also a structure in which a roller is provided on the weight body and is configured to be attached to the hollow portion via only the roller, but in order to attach only the outer periphery of the roller to the hollow portion, the number of the rollers is Or the shape of the hollow portion must be complicated.

An object of the present invention is to eliminate such a problem.

[0008]

In order to achieve the above object, the present invention takes the following measures. That is, a self-closing device for a sliding door according to the present invention is a sliding door that is supported by a rail portion fixed to a rammer portion and horizontally slides between an open position and a closed position, and extends vertically inside the sliding door. A hollow portion is provided, an entrance opening communicating with the hollow portion is opened at the upper end of the sliding door, a string is hung from the entrance into the hollow portion, and a weight body is attached to the lower end of the string. The hollow end is supported so as to be movable up and down, and the upper end of the string is located just above the extension line of the flow line of the entrance and at the front end side which is slightly closing direction from the position of the entrance at the closing position. A self-closing device for a sliding door configured such that the weight body is moved upward as the opening width of the sliding door is increased by being fixed to the rail portion or the rammer portion with the hollow portion having a substantially rectangular flat cross section. And the weight is It is provided with a plate-like main body that extends downward symmetrically and at least four rollers arranged near the upper and lower ends and near the front and rear ends of the main body, and the main body is formed by bending the base and the front and rear ends of the base. A folding part, wherein the rotation axis of the roller is pivotally attached to the bending part, and the bending angle between the base part and the bending part is at least two of the rollers are side walls of the hollow part. It is characterized in that it is adjusted in advance so as to come into contact with the vicinity of the front and rear corners.

In the sliding door self-closing device having such a structure, since the front and rear ends of the main body of the weight body are bent, not only the front and rear lengths can be shortened as compared with a flat plate-shaped device having the same weight. Also, the vertical length can be suppressed. Further, the weight of the weight body can be easily adjusted by adjusting the bending angle of the bent portion, and the self-closing force depending on the weight of the sliding door can be easily adjusted. Furthermore, since the angle of the rotation axis of the roller can be adjusted by adjusting the bending angle, the shape of the hollow portion is a flat cross-section rectangle and is easily processed,
Since the roller is provided near the corner of the side wall of the hollow portion, rattling of the weight body in the hollow portion can be suppressed with a minimum number of the rollers, and the running noise of the sliding door is reduced. At the same time, it is possible to perform an appropriate exercise by the sliding door.

As a concrete embodiment of the body of the weight body, it comprises a base portion having a straight cross section, a flat cross section bent or a flat cross section curved shape, and a bent section in which the front and rear ends of the base section are respectively bent. , Those formed by bending a sheet metal.

In the self-closing device of the sliding door having such a structure, the main body of the weight body can be formed by bending the sheet metal, and the manufacture is easy. Further, by bending or bending the base of the weight body, the front-rear length and the vertical length can be further shortened, and the weight of the weight body, which is restricted in the front-back length and the vertical length, can be adjusted more easily.

Further, the main body of the weight body is rotationally symmetric, and comprises a base portion which is a flat plate having a straight cross section and bent portions which are formed by bending the front and rear ends of the base portion in opposite directions at the predetermined bending angle. It may have a shape.

With the sliding door self-closing device having such a structure, the weight body to which the present invention is applied has the simplest shape and is easy to manufacture. Further, since it has a rotationally symmetric shape, it is easy to enter the hollow portion.

Further, the main body of the weight body is composed of a base portion having a flat cross-section bent shape in which the center is bent, and bent portions formed by bending both front and rear ends of the base portion in the same direction at the constant bending angle. The flat cross section may be W-shaped.

With the self-closing device for a sliding door having such a structure, the weight body having the bent base portion is the simplest and easy to manufacture, and the shape is symmetrical in the front-rear direction. Entry work is easy.

As described above, according to the present invention, not only the weight of the weight can be reduced in size, but also the weight of the weight is restricted due to its size, and the weight can be easily manufactured.
It has a special effect that an appropriate self-closing force can be obtained with a simple structure.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the sliding door 4 of this embodiment is arranged at a doorway O formed between left and right columns 2 vertically fixed between a ceiling surface C and a floor surface F. It is a thing.
At the doorway O, the rammer portion 3 is provided on the ceiling surface C between the left and right columns 2.
In addition to the fixed wall, the right half is opened back and forth to facilitate movement of a wheelchair, a loading platform, etc. without providing a structure on the floor F, and the left half has a partition wall 1 having a sliding door storage space 1a formed therein. The sliding door 4 is slidably supported by the rail portion 39 that is disposed and is accommodated in the rammer portion 3 and that is disposed in parallel with the ceiling surface C, so that the sliding door 4 and the open position A shown in FIG. It is configured to open and close by sliding with respect to the closing position B shown by.

The partition wall 1, as shown in FIG.
It is provided with a single door pocket panel 11. The front and rear door pocket panels 11 have their lower ends mounted on the mounting surface 6a of the adjuster 6 and the door pocket panel mounting portion of a strut adjuster (not shown), respectively, with their upper ends attached to the lower ends 3a of the rammer parts 3 and their left ends. The support columns 2 are attached to the front and rear surfaces of the support columns 2 and are engaged with each other. As shown in FIG. 4, the space between the two door pocket panels 11 is a sliding door storage space 1a. The right side edge of the door pocket panel 11 is a door pocket opening 12, and this door pocket opening 12
The sliding door 4 is configured to move back and forth from the sliding door storage space 1a via the.

The left and right struts 2 are substantially rectangular pipe materials, and are fixed to the ceiling surface C while accommodating the upper ends in the ceiling rails 31 of the rammer section 3, and the lower ends are laid on the struts of a stanchion adjuster (not shown). It is placed on the surface and the height can be adjusted according to the unevenness of the floor surface F. The front and rear width of the column 2 is slightly larger than the thickness of the sliding door 4.

As shown in FIG. 5, the rammer section 3 includes a ceiling rail 31, a rammer support 32, front and rear upper rammer panels 33, a rammer frame section 34, a door pocket panel fixing angle 35, and an inspection rammer panel. 36, and accommodates the rail portion 39 inside. The ceiling rail 31 has a downward U-shaped cross section fixed to the ceiling surface C. The rammer support 32 is fixedly mounted on the ceiling surface C while receiving the upper end in the ceiling rail 31 of the rammer section 3 in the middle of the left and right supports 2, and has the lower end to a height substantially equal to the lower edge of the upper rammer panel 33. Is extended. The front and rear upper rammer panels 33 are detachably fixed to the front and rear surfaces of the support column 2 and the rammer support column 32 at the left and right side edges. The rammer frame part 34 has left and right ends L (not shown).
The front frame 341 is fixed to the column 2 via a metal fitting and has a rearward U-shaped cross section, and includes a rear frame 342 fixed to the upper end of the front frame 341 and having an L-shaped cross section with a rear end hanging down. A front decorative panel 343 that is fixed to and covers the front surface of the front frame 341;
The outer appearance is adjusted by a rear decorative panel 344 that is fixedly adhered to the rear surface of the rear cover 42, and the upper end of the door pocket panel 11 is attached to the lower ends 3a of the rammer portions 3 that are the lower ends of the front decorative panel 343 and the rear decorative panel 344. It was done. A rail portion 39 having a substantially L-shaped cross section is attached to the inner surface of the front frame 341 via screws. The door pocket panel fixing angle 35 has its left and right ends fixed to the column 2 via L-shaped metal fittings (not shown), and has a U-shaped cross section with its lower end extended forward. Inspection rammer panel 36
Is attached to the lower end of the rear decorative panel 344 so as to be attachable and detachable, and is attached to the rear surface of the door pocket panel fixing angle 35 and fixed by a bolt.
Is covered from behind. Further, door pocket panel attachment portions 37 and 38 are fixed to the lower end of the front frame 341 and the rear surface of the door pocket panel fixing angle 35 via screws, respectively, and the lower ends are the front decorative panel 343 and the rear decorative panel 34.
The door pocket panel attachment surface 37
a and 38a are formed respectively.

The sliding door 4 has a surface plate 42 attached to both surfaces of a core member 41, and is configured to horizontally slide between an open position A shown in FIG. 2 and a closed position B shown in FIG. It is stored in the sliding door storage space 1a of the partition wall 1 at the open position A. As shown in FIG. 2, door wheels 5 are fixedly mounted on the upper end 4a of the sliding door 4 at two positions in the vicinity of both ends in the longitudinal direction, and are supported by the rail portion 39 accommodated in the rammer portion 3 via the door wheels 5. It is configured to be slidable. Further, as shown in FIG. 4, a rubber shock absorber 43 is disposed at a side end that abuts the support column 2 at the closed position B,
The impact of the collision is mitigated together with the protection frame 21 fitted to the supporting columns 2 facing each other. Further, a handle 44, a window 45, and a ventilation hole 46 are also provided. Further, an opening (not shown) having a downward U-shaped cross section is formed at the lower end, and a pin projecting from the floor surface F in the sliding door storage space 1a is inserted into the opening to allow the lower end of the sliding door 4 to move freely. The door pocket panel 11 is prevented from colliding with it.

As shown in FIG. 5, each of the two door rollers 5 has a roller 52 rotatably supported by a support fitting 51. The support fittings 51 are formed by bending a sheet metal, and are fixed to two locations near both ends in the longitudinal direction of the upper end 4 a of the sliding door 4. The roller 52 is pivotally mounted just above the sliding door 4 near the upper end of the support fitting 51, and is configured to be mounted on the rail portion 39 and roll.
Further, the horizontal portion 51a of the support fitting 51 is brought close to the lower end of the front frame 341 of the rammer portion 3 and the horizontal portion 35a of the door pocket panel fixing angle 35 to prevent the roller 52 from falling off the rail portion 39.

The adjuster 6 is fixed to the floor surface F and has a structure in which the height between the mounting surface 6a and the lower end 3a of the rammer portion 3 is adjustable so that the adjuster 6 is fixed to the floor surface F. It is housed inside the decorative plate 61.

In such a doorway O, in this embodiment, as shown in FIGS. 2 to 4, a hollow portion 71 is provided inside the rear end of the sliding door 4, and the upper end of the hollow portion 71 is the upper end 4 of the sliding door 4.
The string 73 is hung down in the hollow part 71 through the entrance 72 as an opening 72, and the weight 8 is attached to the lower end of the string 73 to allow the inside of the hollow part 71 to move up and down. It is supported as much as possible, and the upper end of the string 73 is connected to the entrance 7
Derived from 2, the door pocket panel fixing angle 3 of the rammer part 3
5 is fixed to the sliding door 4 to form a self-closing device 7 for the sliding door 4.

The hollow portion 71 is arranged in the rear end of the sliding door 4 and has a vertically extending rectangular cross section. The upper end of the hollow portion 71 opens to the upper end 4a of the sliding door 4 to form an entrance 72. At the entrance 72, a roller 721 having a rotation axis in the width direction of the sliding door 4 is provided on the front end side, and a string 73 is attached to the roller 721 to prevent the string 73 from directly contacting the entrance 72. It prevents the string 73 from breaking due to abrasion. Attachment position 7 of the string 73 to the door pocket panel fixing angle 35
3a is immediately above the extension line of the flow line of the roller 721 as shown in FIG. 5 and slightly to the right of the position of the roller 721 at the closed position B as shown in FIG.

As shown in FIGS. 6 and 7, the weight 8 has a plate-shaped main body 81 extending vertically symmetrically, and four rollers 82 arranged near the upper and lower ends of the main body 81 and near the front and rear ends thereof.
Consists of The main body 81 is formed by bending a metal plate, and has a rotationally symmetric structure including a base portion 811 that is a flat plate and a bent portion 812 that is formed by bending the front and rear ends of the base portion 811 in opposite directions at constant bending angles 812a. Have a shape,
It is supported from above by a string 73 attached to the center of the upper end of the base portion 811. The four rollers 82 are provided near the upper and lower ends of the bent portion 812 on the front and rear of the main body 81, respectively.
The upper roller 82a is pivotally attached to the front and rear ends of the bent portion 812 from the lower roller 82b. Such a weight body 8 has the body 8 of the bent portion 812.
The bending angle 812a with respect to 1 is adjusted in advance so that the upper roller 82a comes into contact with the vicinity of the front and rear corners 71a of the hollow portion 71 and rolls without rattling. At this time, the lower roller 82b abuts on the front and rear side walls of the hollow portion 71 and rolls.

The operation of the self-closing device 7 for the sliding door 4 having such a structure is as follows. When the sliding door 4 is in the closed position B, the distance between the attachment position 73a of the string 73 and the roller 721 of the entrance 72 is the minimum as shown in FIG.
Is at the lowest point. When the sliding door 4 is gradually opened by the sliding movement, the distance between the attachment position 73a of the string 73 and the roller 721 of the entrance 72 monotonically increases, so that the weight 8 monotonously rises and the sliding door 4 reaches the opening position A. As shown in FIG. 2, the weight 8 also reaches the uppermost point. String 72 due to the weight of the weight body 8
Since the lower end of the roller is urged downward by a constant force regardless of the position of the sliding door 4, the horizontal component force of the roller 721.
The sliding door 4 is biased by a constant force in the closing direction. When the sliding door 4 reaches the closing position B, as shown in FIG. 4, the buffer 43 at the front end of the sliding door 4 contacts the groove 31a of the side frame 31 of the doorway 3 to prevent further movement.

In the self-closing device 7 of the sliding door 4 having such a structure, since the front and rear ends of the body 81 of the weight body 8 are bent, the front-rear length and the vertical length are higher than those of a flat plate having the same weight. Not only can the length be suppressed, but it can be formed only by bending the sheet metal, and the manufacturing is easy. Also, the bent portion 812
It is possible to easily adjust the self-weight of the weight body 8 by adjusting the bending angle 812a, and it is possible to easily adjust the self-closing force depending on the self-weight of the sliding door 4. Furthermore, the bending angle 812a
Since the angle of the rotary shaft 821 of the roller 82 can be adjusted by adjusting, the shape of the hollow portion 71 has a flat cross section and is easy to process, and the roller 82 is provided near the corner 71a of the side wall of the hollow portion 71. Therefore, rattling of the weight 8 in the hollow portion 71 can be suppressed by the minimum number of rollers 82, the running noise of the sliding door 4 can be reduced, and the sliding door 4 can be appropriately moved. Furthermore,
The shape of the weight body 8 is the simplest and the easiest to manufacture to which the present invention is applied, and since the weight body 8 has a rotationally symmetrical shape, it is easy to enter the hollow portion 71.

The configuration according to the present invention is, of course, not limited to those described above. For example, the base of the body of the weight may have a flat cross-section bend or a flat cross-section curved shape of any shape. For example, as shown in FIG. 8 and FIG. A flat cross section W shape may be formed by a base portion 811 having a bent flat cross section and a bent portion 812 formed by bending both front and rear ends of the base portion 811 in the same direction at a constant bending angle 812a. With such a self-closing device 4 for the sliding door 4, the front-rear length and the vertical length of the weight 8 can be further shortened, and the weight of the weight 8 restricted by the front-back length and the vertical length can be adjusted more easily. It is possible. Further, the roller 8 provided on the weight body 8
The number, position, etc. of 2 are arbitrary without departing from the present invention. Further, the position of the hollow portion 71 is not limited to the vicinity of the rear end of the sliding door 4, and may be provided, for example, near the front end. In addition, various modifications can be made without departing from the spirit of the present invention, such as the number, material, and shape of each member.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment to which the present invention is applied.

FIG. 2 is a front view showing the opened state of the embodiment, with a front panel removed and a part cut away.

FIG. 3 is a front view showing a closed state of the embodiment, with a front panel removed and a part cut away.

FIG. 4 is a sectional view taken along line II in FIG. 1 showing a closed state of the embodiment.

FIG. 5 is a side sectional view showing a door roller and a rail portion of the same embodiment.

FIG. 6 is a plan view showing a weight body according to the same embodiment.

FIG. 7 is a front view showing the weight body according to the embodiment.

FIG. 8 is a plan view showing a weight body according to another embodiment.

FIG. 9 is a front view showing the weight body according to the embodiment.

[Explanation of symbols]

 A ... Opening position B ... Closing position 3 ... Rammer part 4 ... Sliding door 4a ... Upper end 7 ... Self-closing device 8 ... Weight 39 ... Rail part 71 ... Hollow part 71a ... Corner 72 ... Entrance 73 ... String 81 ... Main body 82 ... Roller 811 ... Base part 812 ... Bending part 812a ... Bending angle 821 ... Rotating shaft

Claims (4)

[Claims] 1. A sliding door, which is supported by a rail portion fixed to a rammer portion and horizontally slides between an open position and a closed position, wherein a hollow portion extending vertically is provided inside the sliding door. An entrance communicating with the hollow part is opened at the upper end of the sliding door, a string is hung from the entrance into the hollow part, and a weight is attached to the lower end of the string so that the inside of the hollow part can be moved up and down. And the rail portion or the rammer portion on the front end side slightly above the entrance position at the closing position, the upper end of the string being substantially directly above the extension line of the entrance line. A self-closing device for a sliding door configured such that the weight body moves upward with an increase in the opening width of the sliding door by being fixed to the hollow body, the hollow portion having a substantially rectangular cross section, and the weight body. Is a plate-shaped body that extends vertically symmetrically And at least four rollers disposed near both upper and lower ends of the main body and near both front and rear ends of the main body, wherein the main body includes a base portion and bent portions formed by bending the front and rear ends of the base portion. The rotation axis of the roller is pivotally attached to the base portion and the bent portion so that at least two rollers come into contact with the vicinity of the front and rear corners of the side wall of the hollow portion. A self-closing device for a sliding door, which is adjusted in advance. 2. A main body of the weight body comprises a base portion having a straight cross-section, a flat cross-section bend or a flat cross-section curved shape, and bent portions formed by bending the front and rear ends of the base portion, respectively.
A self-closing device for a sliding door, which is formed by bending a sheet metal. 3. A body of the weight body is rotationally symmetric, comprising the base portion which is a flat plate having a straight cross section, and the bent portions formed by bending the front and rear ends of the base portion in opposite directions at the constant bending angle. The sliding door self-closing device according to claim 2, wherein the device has a shape. 4. A main body of the weight body is composed of a base portion having a flat cross-section bent shape in which the center is bent, and a bent portion in which both front and rear ends of the base portion are bent in the same direction at the constant bending angle. The sliding door self-closing device according to claim 2, wherein the sliding door has a W-shaped cross section.