JP2004131993A - Automatic sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic sliding door using a linear motor for a driving source of the door, excellent in durability, stability during traveling, and calmness, etc. <P>SOLUTION: A door is connected to a moving side member of a sliding rail provided in a mounting member for mounting a rail to which the stator of the linear motor is mounted, through a hanging hardware. The sliding rail is constituted of a fixed side member, a moving side member, a plurality of balls rolling between the fixed side member and the moving side member, and a ball retainer rotatably retaining balls. A forcible moving mechanism is provided between the moving side member and the ball retainer so that the door tail side of the moving side member and the door tail side of the ball retainer are in a specified relation. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automatic sliding door using a linear motor as a drive source of the door.
[0002]
[Prior art]
In recent years, linear motors have been used as drive sources to increase the speed of automatic door devices, reduce noise levels, and reduce the size of drive sources.
In these devices, a hanger rail provided on a door is hung and supported on a hanger rail so that the roller can run freely, and the door can be freely opened and closed by connecting the movable element of the linear motor and the door. (For example, refer to Patent Document 1.)
In other words, when the door is running, the weight of the door is concentrated on the roller and the rotating shaft of the roller, so that during long-term use, the roller and the roller shaft are liable to wear, and the durability and running time are reduced. There were problems with stability, quietness, etc.
[0003]
On the other hand, as a manual sliding door, a suspension (slide rail) including a fixed frame, a sliding frame, a plurality of balls interposed between the sliding frame and the fixed frame, and a retainer for rotatably holding the balls is mounted. There is a hanging door which is provided on a frame and has a sliding frame connected to an upper end of the door in a state where the center of each ball coincides with the center of gravity of the door on the same vertical line. (For example, see Patent Document 2.)
[0004]
This is due to the large number of balls provided in the opening and closing direction (the pitch between the centers of the balls is about 13 mm, and is always provided at the time of opening and closing over the full width of the sliding frame corresponding to the door width). Because it supports the weight, it has excellent durability, running stability, and quietness.
However, the sliding frame and the retainer do not always move at a ratio of 2: 1 (the ratio of the moving amount of the sliding frame and the retainer tends to be smaller than the theoretical value during the traveling). The dimension of the retainer in the opening and closing direction needs to be set longer than the theoretical value so that the sliding frame does not come out of the end of the retainer.
On the other hand, when the opening / closing operation is repeated, the positional relationship between the sliding frame and the retainer gradually shifts from the initial setting state to the door end side with respect to the sliding frame (slip phenomenon), and the retainer moves to the fixed frame. However, even when the sliding frame reaches the end of the door and stops, the sliding frame does not reach the closed position (the door is not completely closed).
[0005]
Then, the door is generally closed by a self-closing device, but it is difficult to move only the sliding frame with the retainer stopped, only by the self-closing force of the self-closing device. The sliding frame (door) was forcibly moved by human power until it closed.
Originally, in the case of the manual type, since the opening operation was performed manually, the above-mentioned displacement did not cause any problem.
However, if the above-mentioned suspension (slide rail) is used in an automatic opening / closing type sliding door, the energized state will be continued if the door is not completely closed, and it will easily lead to the failure of the motor. Few, particularly, those using a suspension (slide rail) for a sliding door driven by a linear motor have not been provided so far.
[0006]
[Patent Document 1]
JP 2001-12149 A [Patent Document 2]
Japanese Utility Model Publication No. 58-19246
[Problems to be solved by the present invention]
The present invention solves the above problems and provides an automatic sliding door which is excellent in durability, running stability, quietness, etc. by using a suspension (slide rail) for a sliding door driven by a linear motor. As an issue.
[0008]
[Means for Solving the Problems]
Therefore, in order to solve the above problem, the present invention is configured as a first means using a linear motor as a drive source of a door, and mechanically connecting a mover of the linear motor and the door to open and close the door. In an automatic sliding door movable in a direction, the door is connected to a moving side member of a slide rail provided on a rail mounting member to which a stator of a linear motor is mounted via a hanging metal, and the slide rail is connected to the fixed side member. A movable member, a plurality of balls rolling between the fixed member and the movable member, and a retainer for rotatably holding the ball. A forced movement mechanism is provided between the movable member and the retainer so that the door end side of the retainer always has a predetermined position.
[0009]
Next, when the present invention is configured as a second means, a linear motor is used as a drive source of the door, and the movable element of the linear motor and the door are mechanically connected to make the door movable in the opening and closing direction. In the automatic sliding door, the door is connected to a moving member of a slide rail provided on a rail mounting member to which a stator of the linear motor is mounted via a hanging metal, and the sliding rail is a fixed member and a moving member. It is composed of a plurality of balls rolling between the fixed member and the moving member, and a retainer for rotatably holding the ball. When the door is closed, the door side of the moving member is closer to the door side of the retainer, When the door is fully opened, the moving member and the retainer are always kept in a predetermined position when the door is fully opened. It is provided with a forced transfer mechanism between over.
[0010]
【Example】
Hereinafter, embodiments will be described with reference to the drawings.
FIG. 1 shows a schematic front view of the present invention, wherein reference numeral 100 denotes an automatic sliding door of the present invention, reference numeral 2 denotes a support member attached between a door end side column 21 and a door end side column 22, and reference numeral 3 denotes a support member. Reference numeral 5 denotes a slide rail provided on the rail mounting member 3, reference numeral 6 denotes a sliding door suspended from the slide rail 5 via a hanging bracket 7, and reference numeral 8 denotes a rail mounting member. A reference numeral 9 denotes a linear motor provided between the rail support member 3 and the linear motor 8 provided between the fishing support 7 and the fishing hook 7.
[0011]
The support member 2 is provided with height-adjusting receiving members 211 and 221 formed opposite to the upper inner surfaces of the door-side pillar 21 and the door-butt-side pillar 22 that constitute the doorway erected on the floor. Both ends are supported via adjustment bolts 212 and 222 and mounted horizontally.
Reference numeral 101 denotes a space panel that conceals the support member 2 and the like, and reference numeral 102 denotes an inspection panel that can be removed to inspect the linear motor 8 and the slide rail 5 and the like.
A rail mounting member 3 is provided at a location opened in the opening and closing direction on the corner of the inspection panel 102 over the entire width in the opening and closing direction.
[0012]
The rail mounting member 3 has a rail receiving portion 31 at a lower end portion, is formed in an inverted L-shape in which the inspection panel side is opened, and a linear motor mounting portion 32 is formed above a predetermined size of the rail receiving portion 31. .
[0013]
As shown in FIGS. 3 to 5, the slide rail 5 has a substantially U-shaped cross section, and both upper and lower edges have a substantially circular arc shape, and a long fixed side member 51 which is curved, and a height higher than the fixed side member 51. The movable member 52 has a low U-shaped cross section and both upper and lower edges are curved inward. The movable member 52 is interposed between the upper and lower edges of the fixed member 51 and the movable member 52 and is rotatably held by the retainer 54. Are formed from a plurality of balls 55.
A retainer 54 is provided at the open / close end of the fixed member 51 or a stopper protrusion 511, 511 of the movable member 52. A forced moving mechanism is provided at the door end of the movable rail 52 and the retainer 54. 4 are configured.
[0014]
Reference numeral 56 denotes an outer reinforcing member having a substantially U-shaped cross section formed by extruding aluminum on the outer surface of the fixed member 51, and the fixed member 51 is fitted on the inner surface.
Reference numeral 57 denotes an inner reinforcing member provided on the inner surface of the moving member 52 and having a substantially U-shaped cross section.
Due to the outer reinforcing member 56 and the inner reinforcing member 57, even if the door 6 is heavy using a lead plate or the like for use as a door for the radiation room, the fixed member 51 and the movable member 52 can be used. Is not bent or deformed, and can be sufficiently used.
The slide rail 5 is screwed to the rail mounting member 3 while being mounted on the rail receiving portion 31 while being fitted to the outer reinforcing member 56.
[0015]
The slide rail 5 is configured as described above, and when the movable member 52 slides, the balls 55... (Retainer 54) theoretically move by a half of the movable distance of the movable member 52. Actually, the movement distance of the balls 55 is slightly smaller than the theoretical value due to the slip phenomenon.
Therefore, during opening and closing of the door 6, the movable member 52 does not come out of the end of the retainer 54 (so that a predetermined number or more of balls 55... Always intervene between the movable member 52 and the fixed member 51). Further, in order to share several kinds of opening widths with the same slide rail 5, the dimension of the retainer 54 in the opening and closing direction is set longer than the theoretical value.
[0016]
On the other hand, when the opening / closing operation is repeated, the positional relationship between the movable member 52 and the retainer 54 gradually shifts from the initial setting state to the door end side (particularly, when the moving direction changes, If the member 52 moves in the closing direction and suddenly changes to the opening direction, the slip phenomenon is particularly likely to occur due to the inertial force, the movement of the retainer 54 in the opening direction is delayed, and the door tip is moved from the predetermined position. The movable member 52 moves in the closing direction, and the stopper protrusion 511 formed on the door-side end of the fixed member 51 eventually moves to the top of the retainer 54. Even in a state where the side end portions are in contact (a state in which the movement of the balls 55... Has stopped), the moving side member 52 has not yet reached the closed position (a state in which the door is not completely closed). Occur. Further, when the retainer 54 is set to be longer than the theoretical value as described above, this tendency becomes stronger.
Therefore, it is necessary to forcibly move the retainer 54 that has been displaced during opening and closing to a predetermined position, and the forcible moving mechanism 4 is provided at the moving rail 52 and the end of the retainer 54 on the side of the door.
[0017]
As shown in FIG. 5, the forcible moving mechanism 4 is provided at the door end of the moving member 52, the forced stopper 41 having an inner end protruding toward the retainer 54, and the door end of the retainer 54. , And an inner end of the forcible stopper 41 of the door 6 is constituted by a stopper receiving portion 42 which abuts on the door end side.
That is, the forcible stopper 41 is screwed into the mounting screw hole 411 formed at the door end side end of the movable member 52 and the inner reinforcing member 57 via the washer 412, and the protrusion amount of the inner end is adjustable. The stopper receiving portion 42 has a predetermined thickness so as to prevent a collision sound from being generated when the inner projecting portion of the stopper screw 413 collides and to prevent the retainer 54 from being deformed. A receiving member 421 formed of a rubber material formed longer in the opening / closing direction is attached to an end of the retainer 54 on the side of the door end with rivets 422 and 422.
[0018]
Since the forcible moving mechanism 4 is configured as described above, when the retainer 54 is in a predetermined state, the door end side end of the door 6 is the door end side column 22 or the stopper at the time of full opening (FIG. (Not shown), and in a state where the door 6 is fully opened and stopped, the forced stopper 41 of the moving side 52 comes into contact with the door tip side of the stopper receiving portion 42 of the retainer 54.
On the other hand, if the retainer 54 is displaced toward the door tip due to the slip phenomenon, the forcible stopper 41 of the moving side 52 abuts on the door tip side of the stopper receiving portion 42 before the door 6 is fully opened. State.
Then, in this state, when the door 6 is further opened to the fully opened state, the retainer 54 is forcibly moved to a predetermined position, and the displacement is eliminated.
That is, the moving speed of the door 6 (moving side rail 52) driven by the linear motor 8 is set to be high in the opening direction, so that when the retainer 54 is forcibly moved, the opening operation of the door 6 is affected. There is no.
[0019]
The hanging bracket 7 has a length substantially the same as the dimension of the movable member 52 in the opening and closing direction, and has a U-shaped door hanging part having mounting notches 711 and 711 in the center at the opening and closing end at the lower end. 71, 71 are formed, and a mover mounting portion 72 of the linear motor 8 is formed at an upper end portion in the opening and closing direction, and is firmly connected to the moving member 52.
The door 6 has inverted U-shaped hanging seats 62, 62 formed at upper end portions corresponding to the door hanging portions 71, 71, and is hung by hanging metal fittings 7 via connecting pins 63.
[0020]
The linear motor 8 is a coil-movable linear motor, and its stator 81 is composed of a coil unit and a sensor unit. The stator 81 is located above the slide rail 5 and is connected to the rail via a stator mounting bracket 80. The mounting member 3 is mounted on the inspection panel side.
The stator mounting bracket 80 is formed in an L-shape from the stator mounting portion 801 and the connecting portion 802, and is vertically formed on the connecting portion 802 corresponding to a connecting screw hole (not shown) formed in the rail mounting member 3. An elongated hole (not shown) in the direction is formed, and the mounting height of the stator 81 can be adjusted.
[0021]
The coil unit is formed by arranging three flat coils of the same shape and integrally molding them by insert mode resin processing. At both ends of the resin outer casing in the opening and closing direction, a connecting protrusion and a connecting recess having a male and female relationship are formed. I have.
The sensor unit includes three magnetic detection sensors using Hall elements and the like, a signal line circuit for transmitting their magnetic detection signals, a power supply circuit for supplying power to the three flat coils, and an electrical connection with each of those circuits. The socket for securing is integrally formed by insert mode resin processing, and has a connection projection fitted to the coil unit at one end in the opening and closing direction of the resin outer shell.
[0022]
The mover 82 corresponding to the stator 81 is mounted on the mover mounting portion 72 of the hanging metal 7 via the mover mounting metal 803.
The mover mounting bracket 803 is formed to have a substantially U-shaped cross section, and a spacer is interposed between the mover mounting bracket 803 and the mover mounting bracket 80 so as to cooperate with the elongated hole of the stator mounting bracket 80 to form the mover 81 and the stator 82. The gap is set to a predetermined size.
The mover 82 includes a permanent magnet 821 and a holder 822 having a bolt insertion groove 824 of a connection bolt 823 connected to the suspension fitting 7 on the lower surface, and is provided over substantially the entire width of the door 6 in the opening and closing direction.
[0023]
The controller 9 inputs a magnetic detection signal detected by each magnetic detection sensor of the stator 81, detects a relative position between the coil unit and the mover based on the detection signal, supplies power to each flat coil, and supplies power. The direction of the current flow is switched in accordance with the magnetism of the mover detected by each magnetic detection, and the traveling direction of the mover 82 is switched to open and close the door 6.
That is, the door 6 has various functions by various IC boards and sensor units built in the controller 9.
For example, when an obstacle is hit while the door 6 is being closed, the door 6 immediately reverses, moves to the fully open position, starts a closing motion after a predetermined time has elapsed, stops at the inverted position, and stops without any obstacle. Function to open fully to the specified dimension after confirming the opening, or automatically open to the fully open position from the fully closed position, and then select the opening width according to the size of the passing object. In addition, when the slide rail is used as in the present invention, the door can be once opened to a fully open position when a predetermined number of times of opening and closing is reached.
[0024]
【The invention's effect】
According to the first aspect of the present invention, when the door is fully opened, a forced movement mechanism is provided between the movable member and the retainer such that the door end of the movable member and the door end of the retainer always have a predetermined position relationship. Therefore, the door can always be fully closed even if the sliding phenomenon, which is the only drawback of the slide rail, is achieved by periodically opening the door fully, and an automatic sliding door with excellent durability and quietness Can be provided.
Further, since the retainer is forcibly moved at the time of full opening where the traveling speed is high, the load on the linear motor can be reduced.
[0025]
According to the invention as set forth in claim 2, when the door is closed, the door side of the moving member protrudes slightly from the door side of the retainer, and when the door is fully opened, the door end side of the moving member and the door of the retainer. By providing a forced movement mechanism between the moving side member and the retainer so that the buttocks always have the predetermined position relationship, in addition to the above effects, the frequency of opening the sliding door fully regardless of the occurrence of the slide rail slip phenomenon. I need less.
[Brief description of the drawings]
FIG. 1 is a schematic front view of the present invention. FIG. 2 is a cross-sectional view of a main part taken along line AA of FIG. 1. FIG. 3 is an enlarged view of a part B of FIG. 1. FIG. FIG. 5 is a sectional view showing a forcible moving mechanism.
REFERENCE SIGNS LIST 100 Automatic sliding door 2 Support member 3 Rail mounting member 4 Forced moving mechanism 5 Slide rail 51 Fixed side member 52 Moving side member 54 Retainer 55 Ball 6 Door 8 Linear motor 81 Stator 82 Mover

Claims (2)

In an automatic sliding door in which a linear motor is used as a drive source of a door and a movable element of the linear motor is mechanically connected to the door so that the door can be freely opened and closed, the door is a rail on which a stator of the linear motor is mounted. The slide rail is connected to a moving-side member of a slide rail provided on the mounting member via a hanging member, and the slide rail includes a plurality of balls rolling between the fixed-side member and the moving-side member, and between the fixed-side member and the moving-side member. And a retainer that holds the ball in a freely rotatable manner, and when the door is fully opened, the movable member is forcibly moved between the movable member and the retainer such that the door end of the retainer always has a predetermined position. Automatic sliding door characterized by having a mechanism. In an automatic sliding door in which a linear motor is used as a drive source of a door and a movable element of the linear motor is mechanically connected to the door so that the door can be freely opened and closed, the door is a rail on which a stator of the linear motor is mounted. The slide rail is connected to a moving-side member of a slide rail provided on the mounting member via a hanging member, and the slide rail includes a plurality of balls rolling between the fixed-side member and the moving-side member, and between the fixed-side member and the moving-side member. When the door is closed, the door side of the movable member slightly protrudes from the door side of the retainer, and when the door is fully opened, the door end of the movable member is closed. Automatically characterized by having a forced movement mechanism between the moving side member and the retainer so that the door bottom side of the Can door.

Images