JPH07166754A - Device for preventing slide door from oscillating - Google Patents

Abstract

PURPOSE:To eliminate concavities and convexities on a floor surface and to prevent oscillation of a slide door. CONSTITUTION:A first permanent magnet 12 is provided at the lower end surface of a slide door 6 which is suspended from a rail 10 so as to be moved for opening and closing thereof, and a second permanent magnet 14 is embedded in a floor surface 13 which faces the first permanent magnet 12 within a movable range of the door 6, being flush with the floor surface 13. Further, a small gap X is defined between the door 16 and the floor surface 13, and a bogie 15 is provided so as to prevent the first permanent magnet 12 and the second permanent magnet 14 from magnetically sticking to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide door steady rest device for stopping swing of a sliding door that is suspended by a suspension device or supported and guided by a carriage.

[0002]

2. Description of the Related Art Conventionally, a sliding door suspended by a suspension device is provided with a rail projecting on a floor surface, and a recessed groove for fitting the rail is formed in a lower end surface of the sliding door. To prevent the sliding door from swinging, or instead of the concave groove, a grooved roller member that rolls while being fitted to the rail is provided, and the grooved roller member is guided to the rail. To prevent the sliding door from swinging, or conversely, by forming a rail groove on the floor surface and providing a convex portion or a roller member which fits into the rail groove on the lower end surface of the sliding door, the sliding door is prevented from swinging. .

[0003]

However, according to the above-mentioned prior art, there is a danger that a rail protruding from the floor may trip when a person passes by.
There is a problem that when a trunk or a trolley passes by, it gets caught and becomes an obstacle.

If a rail groove is formed on the floor surface, for example, the tip of a toe may be caught or the heel of a woman's heel may be caught and jammed, which is dangerous. If there is a problem, the movement of the sliding door is hindered and cleaning is difficult.

In order to solve the above-mentioned problems, it is an object of the present invention to provide a steady rest device for a sliding door which eliminates the unevenness of the floor surface and can prevent the sliding door from swinging.

[0006]

The first means for achieving the above object of the present invention is, in a steadying device for a sliding door suspended by a suspension device, a part of a lower end surface of the sliding door or A first permanent magnet is provided on the entire surface, and a recess is provided on a part or all of the floor surface facing the lower end surface of the sliding door in the moving range of the sliding door, and the recess is flush with the floor surface. To apply an attractive force to the first permanent magnet
A permanent magnet is arranged, and a small gap is formed between the lower end surface of the sliding door and the floor surface.

In the second means, a ferromagnetic material is used instead of the first permanent magnet of the first means.

In the third means, a ferromagnetic material is used instead of the second permanent magnet of the first means.

According to a fourth means, in a steadying device for a sliding door suspended by a suspension device, a wheel portion of a carriage provided on a lower end surface of the sliding door is formed by a permanent magnet,
A recess is provided on a part or all of the floor surface facing the lower end surface of the sliding door and within the moving range of the sliding door, and an attractive force is applied to the wheel portion so that the recess is flush with the floor surface. A second permanent magnet to be exerted is arranged, and a small gap is formed between the lower end surface of the sliding door and the floor surface.

In the fifth means, the first permanent magnet exerting an attractive force on the second permanent magnet is attached to a part or the whole of the lower end surface of the sliding door of the fourth means.

In the sixth means, in the fifth means, a ferromagnetic material is used instead of the first permanent magnet.

In the seventh means, in the fourth means, a ferromagnetic material is used instead of the second permanent magnet.

In the eighth means, in the seventh means, the first permanent magnet that exerts an attractive force on the second permanent magnet is attached to a part or the whole of the lower end surface of the sliding door.

In the ninth means, in the fourth, fifth or sixth means, the wheel portion is made of a ferromagnetic material.

The tenth means is that, in the fifth, sixth or eighth means, the wheel portion is made of a non-magnetic material.

The eleventh means is the fourth to first means.
In No. 0 means, the dolly and the first permanent magnet or a ferromagnetic material instead of the first permanent magnet are integrally formed.

A twelfth means has a bogie on a lower end surface of the sliding door, and in a steadying device for the sliding door supported and guided by the bogie, the bogie is formed by a permanent magnet, and the floor on which the bogie rolls. A recess is provided in the surface, and the second permanent magnet that exerts an attractive force on the truck is arranged in the recess so as to be flush with the floor surface.

In a thirteenth means, in the twelfth means, a first permanent magnet that exerts an attractive force on the second permanent magnet is attached to a part or the whole of the lower end surface of the sliding door.

In the fourteenth means, a ferromagnetic material is used instead of the first permanent magnet in the thirteenth means.

In the fifteenth means, a ferromagnetic material is used instead of the second permanent magnet in the fourteenth means.

In the sixteenth means, in the fifteenth means, a first permanent magnet that exerts an attractive force on the second permanent magnet is attached to part or all of the lower end surface of the sliding door.

The seventeenth means is the twelfth and thirteenth means.
Alternatively, in the fourteenth means, the carriage is made of a ferromagnetic material.

The eighteenth means is the thirteenth and fourteenth means.
Alternatively, in 16 means, the carriage is made of a non-magnetic material.

In the nineteenth means, in the twelfth to eighteenth means, the dolly and the first permanent magnet or a ferromagnetic material in place of the first permanent magnet are integrally formed.

A twentieth means is a steadying device for a sliding door which is opened / closed by being suspended by a suspension device and stored in or projected from a guide box, wherein the sliding door and / or the guide box face each other. Alternatively, an engaging groove is formed on the lower surface along the moving direction of the sliding door, and a steadying member that engages with the engaging groove is slidably inserted, and the steadying member has an opening surface when the sliding door is opened. In addition to being equipped with a protrusion prevention mechanism that prevents it from protruding
When it is inserted into only one engagement groove, it is fixed to the other facing surface.

The twenty-first means is the member according to the twentieth means, wherein the protrusion preventing mechanism is loosely fitted in the hole provided in the steady rest member and locked in the sliding door. It is assumed that it is formed of a composite member.

Further, a twenty-second means is the above-mentioned first or second means.
In the first means, the sliding door is an automatic door having a drive device above the sliding door.

[0028]

According to the first means, in the sliding door suspended by the suspension device, the first permanent magnet provided on a part or the whole of the lower end surface of the sliding door and the first permanent magnet provided on a part or the entire surface of the floor. Further, since the second permanent magnet arranged in the recess so as to be flush with the floor surface is arranged so as to exert an attractive force, unevenness is not formed on the floor surface.

Moreover, since the small gap is formed,
Since the sliding door receives a force in the vertical downward direction and the sliding door is suspended by the suspension device at the upper end, only a pendulum movement can be made in the direction perpendicular to the moving direction of the sliding door, so the force always acts in the damping direction. That means
By this, it works to stop the shake.

On the contrary, the moving direction of the sliding door is perpendicular to the direction of the attractive force applied to the sliding door by the permanent magnets, so that the sliding door can move smoothly without being affected by the attractive force generated between the permanent magnets. It is like this.

By forming a small gap between the lower end surface of the sliding door and the floor surface, magnetic attraction between the lower end surface of the sliding door and the floor surface is prevented, smooth movement is realized, and a gap is provided. By reducing the value, the attractive force of the permanent magnet acts more effectively.

Further, according to the second means, the first
In place of the first permanent magnet in the above means, the ferromagnetic material provided on the lower end surface of the sliding door and the second permanent magnet provided in the recess on the floor attract each other, so that the same operation as that of the first means is achieved. In addition, it is possible to make the processing easier than the permanent magnet.

Further, according to the third means, a ferromagnetic material provided in a recess on the floor surface in place of the second permanent magnet in the second means, and a first permanent magnet provided on the lower end surface of the sliding door. Therefore, it is possible to perform the same function as that of the first means and to make the machining easier than the permanent magnet.

Further, according to the fourth means, the wheel portion of the carriage provided on the lower end surface of the sliding door is formed of a permanent magnet so that the second permanent magnet arranged on the floor surface exerts an attractive force. If it is raised, the sliding door is attracted to the floor surface, and works to stop the swing of the sliding door.

According to the fifth means, the fourth means
By attaching the first permanent magnet to the lower end surface of the sliding door in the above means, the force with which the sliding door is pulled to the floor surface is increased more than that in the above fourth means, and the sliding door is more reliably stopped from swinging. Even when the sliding door moves up and down due to some vibration or the like, the wheel portion comes into contact with the floor surface, and the second permanent magnet on the floor surface and the second permanent magnet on the lower end surface of the sliding door are magnetically attached so as not to contact with each other. To prevent this.

According to the sixth means, the fifth means
The second permanent magnet on the floor surface attracts the ferromagnetic material attached to the lower end surface of the sliding door in place of the first permanent magnet instead of the first permanent magnet, so that the first permanent magnet has substantially the same function. It becomes possible to facilitate the processing.

According to the seventh means, the fourth
In this means, the ferromagnetic body arranged in place of the second permanent magnet arranged on the floor and the wheel portion formed of the permanent magnet attract each other, so that the ferromagnetic body has substantially the same function as the fifth means. By adopting, it becomes possible to make the processing easier than the second permanent magnet.

According to the eighth means, the fifth means
In the fifth means, the ferromagnetic material arranged in place of the second permanent magnet arranged on the floor and the wheel portion formed of the first permanent magnet and the permanent magnet attached to the lower end surface of the sliding door attract each other. In addition to the above, it is possible to perform processing more easily than the second permanent magnet by adopting a ferromagnetic material.

Further, according to the ninth means, the wheel portion formed of the ferromagnetic material in the fourth, fifth or sixth means attracts the second permanent magnet arranged on the floor surface. It works almost the same as the means 5 or 6.

According to the tenth means, the wheel portion of the carriage in the fifth, sixth or eighth means is formed of a non-magnetic material, so that damages due to collisions can be prevented as compared with a permanent magnet. Work to reduce.

Further, according to the eleventh means, if the wheel portion and the first permanent magnet or the ferromagnetic material are integrally formed, the work such as assembling at the time of assembly can be simplified.

Next, according to the twelfth means, in the sliding door supported and guided by the carriage, the carriage is formed of a permanent magnet, and the floor surface is provided in a recess provided in the floor surface on which the carriage rolls. By arranging the second permanent magnet that exerts an attractive force on the dolly so as to be in the same plane as the above, the unevenness on the floor surface is eliminated and the dolly supports the second permanent magnet on the floor surface while being magnetically attached. In addition to the function of more reliably stopping the swing of the sliding door, the sliding door can move without meandering due to the attractive force of the carriage and the second permanent magnet.

Further, according to the thirteenth means, by attaching the first permanent magnet to the lower end surface of the sliding door in the eleventh means, the force of attraction between the sliding door and the floor surface increases and the sliding door can be more reliably operated. Along with the function to stop the shake,
The sliding door can move without meandering by the attraction force between the carriage and the first permanent magnet and the second permanent magnet.

According to the fourteenth means, the ferromagnetic body attached to the lower end surface of the sliding door in the twelfth means instead of the first permanent magnet and the second permanent magnet on the floor attract each other. The function is almost the same as that of the twelfth means, and the working can be made easier than that of the first permanent magnet.

According to the fifteenth means, the ferromagnetic material arranged in place of the second permanent magnet arranged on the floor surface in the twelfth means and the carriage formed of the permanent magnet attract each other. The function is almost the same as that of the twelfth means, and the use of a ferromagnetic material makes it easier to process than the second permanent magnet.

According to the sixteenth means, the ferromagnetic material arranged in place of the second permanent magnet arranged on the floor surface in the thirteenth means and the first permanent magnet mounted on the lower end surface of the sliding door, Since the dolly formed of a permanent magnet attracts, it is possible to perform the same operation as that of the thirteenth means, and the use of a ferromagnetic material makes it easier to process than the second permanent magnet.

According to the seventeenth means, the trolley formed of the ferromagnetic material in the twelfth, thirteenth or fourteenth means attracts the second permanent magnet arranged on the floor surface. It works almost the same as the means 13 or 14.

According to the eighteenth means, the carriage of the carriage in the means of the twelfth, thirteenth or sixteenth means is made of a non-magnetic material, so that the damage due to collision is less than that of the permanent magnet. Work.

Further, according to the nineteenth means, if the carriage and the first permanent magnet or the ferromagnetic material that replaces the same are integrally formed, the work such as assembling at the time of assembly can be simplified.

Next, according to the twentieth means, in the steady rest device of the sliding door which is opened and closed by being suspended by the suspension device and stored or projected in the guide box, the sliding door and the guide box face each other. An engaging groove is formed on the surface or lower surface along the moving direction of the sliding door, and a steadying member that engages with the engaging groove is slidably inserted to keep the sliding door at a constant distance from the guide box. This makes it possible to stop the swing.

Further, an engaging groove is formed on the opposite surfaces of the sliding door or the guide box along the moving direction of the sliding door, and a steadying member engaging with the engaging groove is slidably inserted, and By fixing to the other facing surface, the steadying member slides while engaging the engaging groove due to the movement of the sliding door, so that the sliding door keeps a certain distance from the guide box in the same manner as described above, which causes the swinging. You can stop it.

Further, as described above, since the engaging groove is formed on the surface where the sliding door and the guide box face each other, no unevenness is formed on the floor surface.

Further, by providing the protrusion preventing mechanism,
The steady rest serves to prevent the sliding door from protruding to the opening surface when the sliding door is opened.

According to the twenty-first means, the protrusion preventing mechanism includes a hole provided in the steadying member and an engaging member loosely fitted in the hole and locked to the sliding door. If it is formed, the engaging member locked to the sliding door abuts on the end of the hole, so that when the door is opened, it is moved in the opening direction and stored in the guide box so that it does not project to the opening surface. ing.

According to the twenty-second means, since the steady rests of the first to twenty-first means are used for a sliding door of an automatic door having a drive device above the sliding door, unevenness is formed on the floor surface. A sliding door with an automatic door can be configured without doing this, and it also functions to prevent shake and operate reliably.

[0056]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a steadying device for a sliding door according to the present invention will be described below with reference to FIGS. The same components are designated by the same reference numerals and the description thereof will be omitted.

In the first embodiment of the slide door steady rest device 1 according to the present invention, as shown in FIG. 1, a belt 4 is wound around a pulley 3 driven by a driving portion 2 to form a driving device 5. The sliding door 6 is fixed to the first hanging metal fitting 7 connected to the belt 4, and the first roller 8 is rotatably attached to the first hanging metal fitting 7 and the second hanging metal fitting fixed to the sliding door 6. A second roller 9 rotatably attached to 7'and a suspension device 11 for suspending a sliding door 6 by being rotatably mounted on an upper rail 10 which is laid horizontally below the belt 4. By this, the sliding door 6 is adapted to move in the direction shown by arrow A or B in the figure.

The first permanent magnet 12 is fixed to the lower end surface of the sliding door 6, while the recess 1 is formed on the floor surface 13 at a position where the sliding door 6 moves and faces the first permanent magnet 12.
3a is formed, and the second permanent magnet 14 is arranged in the recess 13a so as to be substantially flush with the floor surface 13.

The first permanent magnet 12 and the second permanent magnet 14
Are arranged so that the surfaces facing each other have opposite polarities so as to exert attractive forces on each other. In this embodiment, as shown in FIG. 1, the exposed surface of the first permanent magnet 12 is the N pole. Although the exposed surface of the second permanent magnet 14 is the S pole, the reverse may be applied to each of them.

Further, the first permanent magnet 12 and the second permanent magnet 1
When 4 is magnetically attached, the first permanent magnet 12 and the second permanent magnet 1
Since the frictional force between the sliding door 6 and the sliding door 4 increases and hinders the smooth movement of the sliding door 6, a small gap X is formed between the lower end surface of the sliding door 6 and the floor surface 13. In order to work effectively, it is preferable that the width is as narrow as possible.

According to the slide door steady rest 1 of the first embodiment having the above-mentioned structure, since the surfaces of the first permanent magnet 12 and the second permanent magnet 14 facing each other have different polarities, the magnetic force Since the sliding door 6 is attracted to the floor surface 13 by the action, the action of stopping the swing of the sliding door is generated.

Since the second permanent magnet 14 is arranged at the position where the sliding door 6 moves, even when the sliding door 6 is opened and closed by the drive of the drive device 5, the second permanent magnet 14 arranged on the floor surface 13 is moved. The magnet 14 and the first member arranged on the lower end surface of the sliding door 6.
The attraction with the permanent magnet 12 serves to constantly stop the shake.

By arranging the second permanent magnets 14 so as to be flush with the floor surface 13, no unevenness is formed on the floor surface 13, so that when a person, a carriage, etc. pass by. No more getting stuck or tripping over.

Even if one of the first permanent magnet 12 and the second permanent magnet 14 of the first embodiment is replaced by a ferromagnetic material such as iron or ferrite, the sliding door 6 and the floor surface can be used. It is possible to exert attractive force between 13 and.

Next, the second embodiment of the steady rest device 1 for the sliding door according to the present invention is, as shown in FIG. 2, for ensuring the small gap X against the vertical vibration of the sliding door 6. The trolley 15 is attached to the lower end of the trolley, and the wheel portion 15a of the trolley 15 is attached to the floor surface 1 in order to eliminate friction as much as possible.
It is arranged so as not to be in contact with 3.

The wheel portion 15a of the carriage 15 is
If it is formed of a non-magnetic material such as a resin material such as rubber or plastics, it will not be damaged even if it collides with the first permanent magnet 12 arranged on the floor surface 13.

The wheel portion 15a may be made of a permanent magnet or a ferromagnetic material, and this causes the wheel portion 15a to exert an attractive force on the second permanent magnet 14 to stop the swing of the sliding door 6. As a result, a synergistic effect with the attractive force of the first permanent magnet 12 is produced, but in this case, the first permanent magnet 12 can be removed.

When the wheel portion 15a is made of permanent magnets in this way, the second permanent magnets 14 arranged on the floor surface 13 are provided.
It is needless to say that the outer peripheral surface of the wheel portion 15a must have a polarity different from the polarity of the exposed surface of the floor surface 13 in order to exert an attractive force.

Further, the wheel portion 15a and the first permanent magnet 1 are
2 (or an alternative ferromagnetic material) may be integrally formed, whereby the assembling work at the time of assembling the sliding door 6 can be simplified and the number of steps can be reduced.

Next, in the third embodiment of the slide door steady rest 1 according to the present invention, as shown in FIG. 3, a carriage 16 is attached to the lower end of the slide door 6, and the slide door 6 is mounted by the carriage 16. Is rotatably supported, and a connecting metal fitting 7 ″ attached to an upper portion of a sliding door 6 is attached to a belt 4 wound around a pulley 3 which is rotationally driven by a drive unit 2 of a drive device 5 arranged above. It is fixed so that the sliding door 6 can be moved.

The wheel portion 16a of the truck 16 is made of a permanent magnet or a ferromagnetic material, and the second permanent magnet is located on the floor surface 13 at a position where the sliding door 6 moves and which faces the first permanent magnet 12. 14 are disposed, and the wheel portions 16a and the second permanent magnets 14 are disposed such that the surfaces facing each other have different polarities.

According to the third embodiment of the slide door steady rest device 1 according to the present invention having such a structure, the wheel portion 16 is provided.
Since a rolls while magnetically adhering to the second permanent magnet 14 arranged on the floor surface 13, the force for stopping the shake becomes larger than that in the first embodiment, and the shake is effectively stopped.

In this case, the shaft 16b on which the wheel portion 16a is mounted is not magnetically bonded, and is preferably made of paramagnetic stainless steel, reinforced plastic, ceramic or the like.

Further, similarly to the first embodiment, the first permanent magnet 12 and the second permanent magnet 14 are provided on the lower end surface of the sliding door 6.
The wheels 16a of the carriage 16 may be made of a non-magnetic material such as rubber or plastics, and other actions and effects may be provided. Since those are the same as those in the first embodiment, the description thereof will be omitted.

Next, still another embodiment of the steady rest device 1 for a sliding door according to the present invention will be described with reference to the drawings. Since the suspension device is the same as that of the first embodiment, its description is omitted.

As shown in the exploded perspective view of FIG. 4, the fourth embodiment of the steady rest device 1 for the sliding door according to the present invention has a cross-section reverse to the lower frame 17 of the sliding door 6 suspended by a suspension device (not shown). An L-shaped first engaging groove 18 is formed in the moving direction of the sliding door 6, while a guide box 19 of the sliding door 6 forming the wall surface of the building has a position facing the first engaging groove 18. A second engaging groove 20 having a symmetrical shape is formed, and a steady rest 21 that simultaneously engages with the first and second engaging grooves 18 and 20 is slidably inserted.

The steady rest 21 has first and second engaging portions 22 and 23 respectively engaged with the vertical grooves 18a and 20a constituting the first and second engaging grooves 18 and 20, respectively. And a connecting portion 24 which engages with the lateral grooves 18b and 20b forming the second engaging grooves 18 and 20 and connects the upper ends of the first and second engaging portions 22 and 23 to be integrated. First engaging portion 2
2 is extended to one side, and the long hole 22a is provided along the longitudinal direction.
Are formed.

The engaging member 25 is attached to the lower frame 17 of the sliding door 6.
The long hole 2 is screwed into the screw hole 26 formed in the
By being loosely fitted in the 2a, the protrusion preventing mechanism 27 that restricts the sliding range of the steady rest 21 to the length dimension of the long hole 22a is configured.

Further, in order to prevent the steady rest member 21 from projecting when the sliding door 6 is opened, for example, from the engaging member 25 to the sliding door 6
Is set to L1 and the dimension from the base end of the elongated hole 22a to the tip of the first engaging portion 22 is set to L2, L2 <L1 is set. .

As the engaging member 25, for example, a hexagon socket head bolt is used as shown in the figure, and a deep counterbore is formed in the screw hole 26 of the lower frame 17 of the sliding door 6 so that the head of the bolt protrudes. By not doing so, the movement of the sliding door 6 is not obstructed.

Further, in this embodiment, the first and second
The engaging grooves 18 and 20 may be formed in the upper frame (not shown) formed only in the sliding door 6 or the guide box 19. Reference numeral 28 in the drawing denotes a transparent window plate or the like which is made of glass or reinforced plastic and is fitted in the door frame 6a.

In the fourth embodiment having such a structure, the steadying member 21 is fixed to the first engaging groove 18 formed in the lower frame 17 of the sliding door 6 and the building or the like. The sliding door 6 is prevented from swinging by engaging with both of the second engaging grooves 20 formed in the sliding member 19, and the sliding door 6 is also slid while engaging and sliding when the sliding door 6 moves. It is like this.

Next, in a fifth embodiment of the steady rest 21 according to the present invention, as shown in FIG. 5, the first engaging portion 22 and the second engaging portion 22 of the steady rest 21 shown in the fourth embodiment are provided. Engagement part 2
3 is laterally connected with the connecting portion 24, and the connecting portion 24 is formed with a cutout recess 24a for engaging with the engaging groove 20 formed in the guide box 19 and allowing the connecting portion 24 to slide freely. Along with this, the engaging groove 18 ′ formed on the lower surface of the lower frame 17 of the sliding door 6 has a rectangular cross section to be engaged by the engaging member 25. The engaging groove 18 'is not exposed and the appearance is not spoiled.

Next, in the sixth embodiment of the slide door steady rest device 1 according to the present invention, as shown in FIG.
The 1st 1st engaging part 22 is substantially the same length as the 2nd engaging part 23, and the hole 29 which inserts the engaging member 25, such as a bolt, is formed.

As shown in FIG. 8, the lower frame 17 of the sliding door 6 is provided with a recess 18 "into which the first engaging portion 22 is fitted, and the bottom surface of the recess 18" is engaged with the first engaging portion 22 ". The part 22 is adapted to be fixed, and this recess 18 ″ is formed at the end of the lower frame 17 of the sliding door opposite to the opening end.
Even when the door is closed, the guide box 19 is arranged so that it cannot be seen from the outside. In the figure, 28 is a transparent window plate.

According to the slide door steady rest 1 of the sixth embodiment having such a configuration, the second engaging portion 23 of the steady rest 21 placed on the lower frame 17 of the sliding door 6 is guided by the guide box 19. The swing can be stopped by sliding while engaging with the engaging groove 20 of.

Next, in the seventh embodiment of the slide door steady rest device 1 according to the present invention, as shown in FIGS. 7 and 8, the second engaging portion 23 moves in the direction opposite to that of the sixth embodiment. The first engaging portion 22 and the second engaging portion 23 are connected substantially vertically so as to project in opposite directions via the connecting portion 24, and the configurations, effects, etc. are described above. Since it is the same as the slide door steady rest 1 of the sixth embodiment, its description is omitted.

[0088]

As described above, according to the sliding door steady rest device of the first aspect of the present invention, since the unevenness of the floor surface can be eliminated and the swinging motion can be stopped by the attractive force of the permanent magnet, the sliding door opening can be prevented. Sometimes people can pass safely when passing, and it is also excellent in appearance.

Further, according to the slide door steady rest device of claim 2, even if a ferromagnetic material is used instead of the first permanent magnet, the same effect as the slide door steady rest device according to claim 1 is obtained. It can be obtained and processing becomes easier, improving workability.

According to the sliding door steady rest device of claim 3, even if a ferromagnetic material is used instead of the second permanent magnet, the same effects as the sliding door steady rest device according to claim 1 are obtained. It can be obtained and processing becomes easier, improving workability.

According to another aspect of the present invention, there is provided a slide door steady rest, in which a lower end surface of the sliding door is provided with a carriage, and wheels of the carriage are formed by permanent magnets. Since the second permanent magnet is arranged so that the sliding door can be prevented from swinging without forming irregularities, it can be safely passed when a person or the like passes through when the sliding door is opened, and It is also excellent in appearance.

According to the slide door steady rest device of claim 5, the first permanent magnet is attached to a part or the whole of the lower end surface of the slide door steady rest device according to claim 4. In addition to the effect of the slide door steady rest device according to the fourth aspect, the pulling force of the first permanent magnet and the second permanent magnet is further added, so that the swing of the slide door can be more reliably stopped.

According to the slide door steady rest device of claim 6, even if a ferromagnetic material is used in place of the first permanent magnet of the slide door steady rest device according to claim 5, The same effect can be obtained.

Further, according to the slide door steady rest device of claim 7, even if a ferromagnetic material is used instead of the second permanent magnet of the slide door steady rest device of claim 4, It is possible to obtain the same effect, facilitate the processing, and reduce the number of steps.

According to the slide door steady rest device of claim 8, even if a ferromagnetic material is used in place of the second permanent magnet of the slide door steady rest device according to claim 5, It is possible to obtain the same effect, facilitate the processing, and reduce the number of steps.

Further, according to the slide door steady rest device of claim 9, if the wheel portion of the slide door steady rest device of claim 4, 5 or 6 is made of a ferromagnetic material, the wheel portion can be processed. It is possible to easily reduce the man-hours and reduce the cost.

According to the slide door steady rest device of claim 10, the wheel portion of the slide door steady rest device according to claim 5, 6 or 8 is formed of a non-magnetic material. It is possible to prevent them from being damaged when they collide with the second permanent magnets arranged on the surface.

According to the slide door steady rest of the eleventh aspect, if the wheel portion is integrally formed with the first permanent magnet or the ferromagnetic material that replaces the first permanent magnet, the wheel portion can be integrally incorporated in the slide door. Assembling work is reduced by simplifying the work.

According to the slide door steady rest device of claim 12, the carriage for supporting the slide door is formed of a permanent magnet,
By arranging the second permanent magnets flush with the floor surface, the unevenness of the floor surface can be eliminated to allow safe passage, and the trolley will roll while magnetically attaching to the second permanent magnets. The magnetic attraction force becomes larger than that in the case where it is being carried out, and the shake can be more reliably stopped.

Further, according to the slide door steady rest of claim 13, the first permanent magnet is attached to a part or the whole of the lower end surface of the slide door steady rest of the present invention. In addition to the effect of the slide door steady rest device according to the twelfth aspect, the attraction force of the first permanent magnet and the second permanent magnet is further applied, whereby the swing of the sliding door can be more reliably stopped.

According to the slide door steady rest device of claim 14, the first embodiment of the sliding door steady rest device according to claim 13 is as follows.
14. The method according to claim 13, wherein a ferromagnetic material is used instead of the permanent magnet.
The same effect as can be obtained.

According to the slide door steady rest of the fifteenth aspect, the second embodiment of the slide door steady rest according to the fourteenth aspect is as follows.
15. The method according to claim 14, wherein a ferromagnetic material is used instead of the permanent magnet.
It is possible to obtain the same effect as, and to facilitate the processing and reduce the number of steps.

According to the slide-door steady rest device of claim 16, the second embodiment of the sliding-door steady rest device according to claim 15 is as follows.
16. Even if a ferromagnetic material is used instead of the permanent magnet,
It is possible to obtain the same effect as, and to facilitate the processing and reduce the number of steps.

According to the sliding door steady rest of the seventeenth aspect, if the bogie of the sliding door steady rest according to the twelfth, thirteenth or fourteenth aspect is made of a ferromagnetic material, the bogie can be easily processed. It is possible to reduce the man-hours and reduce the cost.

According to the slide door steady rest device of the eighteenth aspect, since the carriage of the slide door steady rest device according to the thirteenth, fourteenth or sixteenth aspect is formed of a non-magnetic material, the floor surface or the floor surface is reduced. It is possible to prevent them from being damaged when they collide with the second permanent magnet arranged in the.

According to the slide door steady rest of the nineteenth aspect, the carriage of the slide door steady rest according to any one of the twelfth to eighteenth aspects is integrally formed with the first permanent magnet or a ferromagnetic body which replaces the first permanent magnet. If it is formed, it can be integrated into a sliding door, and the number of assembling steps can be reduced by simplifying the assembling work.

Further, according to the slide door steadying device of claim 20, since the distance between the sliding door and the guide box can be kept constant by the steadying member, the swinging of the sliding door can be reliably stopped, and Since the unevenness is not formed on the floor surface, it can be safely passed, and the protrusion prevention mechanism prevents the steady rest from protruding to the opening surface when the sliding door is opened. There is no obstruction to traffic.

According to the slide door steady rest of the twenty-first aspect, when the door is opened, the guide member is moved in the opening direction when the engaging member engaged with the sliding door comes into contact with the end of the hole. It will be securely stored in and will not obstruct traffic.

Further, according to the slide door steady rest device of claim 22, even in a sliding door of an automatic door having a drive device above the sliding door, the same effect as that of the slide door steady rest device of claims 1 to 21 is provided. The effect of can be produced.

[Brief description of drawings]

FIG. 1 is a partially broken schematic partial sectional view showing a first embodiment of a slide door steady rest according to the present invention.

FIG. 2 is a partially broken schematic partial sectional view showing a second embodiment of a steadying device for a sliding door according to the present invention.

FIG. 3 is a partially broken schematic partial sectional view showing a third embodiment of a steady rest device for a sliding door according to the present invention.

FIG. 4 is an exploded perspective view of essential parts showing a fourth embodiment of a steady rest device for a sliding door according to the present invention.

FIG. 5 is an exploded perspective view of a main part of a slide door steady rest device according to a fifth embodiment of the present invention.

FIG. 6 is an overall perspective view showing a steady rest of a sixth embodiment of a steady rest device for a sliding door according to the present invention.

FIG. 7 is a cross-sectional view of essential parts showing the sixth embodiment.

FIG. 8 is an overall perspective view showing a steady rest of a seventh embodiment of a steady rest device for a sliding door according to the present invention.

FIG. 9 is a cross-sectional view of the essential parts showing the seventh embodiment.

[Explanation of symbols]

 1 Sliding door steady rest device 5 Drive device 6 Sliding door 11 Suspension device 12 First permanent magnet 13 Floor surface 13a Floor recess 14 Second permanent magnet 15,16 Truck 15a Wheel portion 18,18 'Engagement groove 20 Engagement Mating groove 21 Steady stop member 22a Hole (long hole) 27 Protrusion prevention mechanism 25 Engaging member X Small gap

Claims (22)

[Claims] 1. A steadying device for a sliding door suspended by a suspension device, wherein a first permanent magnet is provided on a part or the whole of the lower end surface of the sliding door, the first permanent magnet being opposed to the lower end surface of the sliding door and the sliding door. A recess is provided in a part or all of the floor surface within the moving range, and a second permanent magnet that exerts an attractive force on the first permanent magnet is arranged in the recess so as to be flush with the floor surface. A steady rest for a sliding door, characterized in that a small gap is formed between the lower end surface of the sheet and the floor surface. 2. The steady rest device for a sliding door according to claim 1, wherein a ferromagnetic material is used instead of the first permanent magnet. 3. The steady rest device for a sliding door according to claim 1, wherein a ferromagnetic material is used instead of the second permanent magnet. 4. A steadying device for a sliding door suspended by a suspension device, wherein a wheel portion of a carriage provided on a lower end surface of the sliding door is formed by a permanent magnet, and the wheel portion of the trolley is opposed to the lower end surface of the sliding door and the sliding door. A recess is provided on a part or all of the floor surface within the movement range of the second permanent magnet, and the second permanent magnet exerting an attractive force on the wheel portion is arranged in the recess so as to be flush with the floor surface. A steady rest for a sliding door, characterized in that a small gap is formed between the lower end surface of the sheet and the floor surface. 5. The steady rest apparatus for a sliding door according to claim 4, wherein a first permanent magnet that exerts an attractive force on the second permanent magnet is attached to a part or the whole of the lower end surface of the sliding door. 6. The steady rest device for a sliding door according to claim 5, wherein a ferromagnetic material is used instead of the first permanent magnet. 7. The steady rest device for a sliding door according to claim 4, wherein a ferromagnetic material is used instead of the second permanent magnet. 8. The steady rest device for a sliding door according to claim 5, wherein a ferromagnetic material is used instead of the second permanent magnet. 9. The steady rest device for a sliding door according to claim 4, 5 or 6, wherein the wheel portion is formed of a ferromagnetic material. 10. The slide door steady rest device according to claim 5, 6 or 8, wherein the wheel portion is formed of a non-magnetic material. 11. The steady rest device for a sliding door according to claim 4, wherein the carriage is integrally formed with a first permanent magnet or a ferromagnetic material replacing the first permanent magnet. 12. A steadying device for a sliding door, which has a carriage on a lower end surface of the sliding door and is supported and guided by the carriage. A steady rest device for a sliding door, wherein a second permanent magnet that exerts an attractive force on the dolly is arranged in the recess so as to be flush with the floor surface. 13. The steady rest device for a sliding door according to claim 12, wherein a first permanent magnet that exerts an attractive force on the second permanent magnet is attached to a part or the whole of the lower end surface of the sliding door. 14. The steady rest device for a sliding door according to claim 13, wherein a ferromagnetic material is used instead of the first permanent magnet. 15. The steady rest device for a sliding door according to claim 14, wherein a ferromagnetic material is used instead of the second permanent magnet. 16. The steady rest apparatus for a sliding door according to claim 15, wherein a first permanent magnet that exerts an attractive force on the second permanent magnet is attached to a part or an entire surface of a lower end surface of the sliding door. 17. The steady rest device for a sliding door according to claim 12, 13 or 14, wherein the carriage is made of a ferromagnetic material. 18. The steady rest device for a sliding door according to claim 13, 14 or 16, wherein the carriage is formed of a non-magnetic material. 19. The steady rest device for a sliding door according to claim 12, wherein the trolley and the first permanent magnet or a ferromagnetic material replacing the first permanent magnet are integrally formed. 20. A steadying device for a sliding door that is opened and closed by being suspended by a suspension device and stored or projected in a guide box, wherein the sliding door is moved to opposite surfaces or lower surfaces of the sliding door and / or the guide box. An engaging groove is formed along the direction, and a steadying member that engages with the engaging groove is slidably inserted, and the steadying member is prevented from protruding to the opening surface when the sliding door is opened. A steady rest device for a sliding door, comprising: 21. The projection preventing mechanism is formed by a hole provided in the steady rest member and an engaging member loosely fitted in the hole and locked by the sliding door. Item 20. The sliding door steady rest device according to Item 20. 22. The steady rest device for a sliding door according to claim 1, wherein the sliding door is an automatic door having a drive device above the sliding door.