JPH11324487A - Linear motor type door closer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress transmission of a swing of a door to a moveable element in a single sliding door closer and apply easily to a double sliding door closer. SOLUTION: The door closer is equipped with a linear motor 4 having a stator, a moveable element 7 that can move along the stator. In this case, one ends of wire members extending in the opposite directions along the moving direction of the moveable element 7 are connected to the moveable element 7, and wire attaching portions to which the other ends of the wire members are connected, are provided to door hangers 1, 1 of a door 3 with the moveable element 7 positioned between the wire attaching portions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor type door opening / closing device, and more particularly, to a linear motor type door opening / closing device, which is provided with a means for smoothly opening / closing operation with a low resistance to a single pulling door opening / closing device. The present invention relates to a linear motor type door opening / closing device that can be easily converted to a double door opening / closing device as well as a sliding door opening / closing device.

[0002]

2. Description of the Related Art Linear motor type door opening / closing devices are advantageous in that they can operate quietly and smoothly, and their use is increasing. Conventionally, the one disclosed in Japanese Patent Application Laid-Open No. 63-233184 is known, in which a linear linear motor is arranged above a door that can be opened and closed along the door moving direction. Conventionally, a door hanger for hanging a door on a guide rail so as to be able to roll freely and a movable element of a linear motor are connected and integrated.

[0003]

The linear motor obtains effective propulsion by maintaining a small gap formed between the mover and the stator. However, in the prior art, since the door and the mover are directly connected to each other, when the door swings due to vibration or the like at the time of opening and closing the door, the mover is directly affected by the swing of the door, and the above-described gap is disturbed. Or the movable element and the stator come into contact with each other, and there is a possibility that an effective propulsion force cannot be obtained.

Therefore, as in a door opening / closing device having a single-pull structure disclosed in Japanese Utility Model Laid-Open Publication No. 49-113440 and Japanese Utility Model Laid-Open Publication No. 5-38254, an elastic material is used for a movable element and a door of a linear motor. By adopting an indirectly connecting means such as interposing or connecting so as to be relatively movable, it is possible to prevent the door swing from being transmitted to the stator so as to avoid the above-described inconvenience and obtain an effective propulsion force. Known techniques are known.

[0005] However, with these techniques, it is possible to avoid transmission of the door run-out to the mover, but in order to apply those techniques to a double door, a drive unit is required for each door. Therefore, there was room for improvement in economic aspects.

In view of such circumstances, the present invention can suppress the transmission of the swing of the door to the mover in the single-door opening / closing device and can easily be applied to the double-door opening / closing device. It is an object to provide a switchgear.

[0007]

According to a first aspect of the present invention, there is provided a linear motor type door opening / closing apparatus, comprising a linear motor having a stator and a movable element movable along the stator.
The movable element is connected to one end of a pair of wire members extending in directions opposite to each other along a moving direction of the movable element,
A wire attachment portion to which the other end of each of these wire members is connected is provided on the door in a state where the mover is located between the wire attachment portions.

According to the structure of the first aspect of the invention, since the mover and the door are connected via the wire member, even if the door is slightly swung right and left or up and down due to bending or undulation of the guide rail. However, they are absorbed by the wire members and are not transmitted to the mover, and the linear motor can operate while maintaining an appropriate gap between the mover and the stator, thereby reducing the original propulsive force. You will be able to demonstrate. And, since a pair of wire members is provided so that the mover is located between the pair of wire attachment portions on the door side, the wire member can transmit only a pulling force, but can be opened and closed in both directions. The driving movement force can be transmitted to the door.

Further, each wire member is wound around and connected to a pair of pulleys, and a portion of the wire member moving in the forward direction is connected to a wire mounting portion of one door and a portion of the wire member moving in the opposite direction. Are connected to the wire attachment portions of the other door, respectively, whereby a pair of doors can be configured in which a pair of doors are simultaneously driven and moved in opposite directions (see FIG. 6). That is, the mover and the door are connected via the wire member by changing the length of the wire member and the dimensions of the wire attachment portion and making a relatively small change such as preparing a pair of pulleys or other loops. The provision of a wire attachment portion on the door basically makes it possible to relatively easily apply the present invention to a double door structure while maintaining a state suitable for a single door structure.

According to a second aspect of the present invention, in the first aspect, a pair of door hangers for suspending the door on the guide rail are arranged on the door in the door moving direction, and each of the door hangers is provided with a wire attaching portion. And

According to the structure of the second aspect of the present invention, since the pair of door hangers for suspending the door on the guide rails are provided with the wire attaching portions, the existing necessary door hangers can be used as they are, and the door hangers can be used. What is necessary is just to provide an exclusive wire attachment part. That is, the structure of the single sliding door and the double sliding door can be made common. Then, in the single-drawing door or the double-drawing door, it is only necessary to change the mounting position and the shape of the wire mounting portion.

[0012] The third invention is the first or second invention, wherein
It is characterized in that the wire attachment portion is detachably mounted on the door or the door hanger.

According to the structure of the third aspect of the invention, since the door mounting portion is detachably provided on the door or the door hanger, the wire mounting portion having a low height for the single door (see FIG. 1) is provided. Tall wire attachment for sliding door (Figure 6)
(See Reference). Therefore, the door or the door hanger itself can be a common one, which makes it easier to apply to a double door structure.

According to a fourth aspect, in the first to third aspects, a tension adjusting mechanism capable of adjusting the tension of the wire member is provided on the mover side.

According to the fourth aspect of the invention, since the tension adjusting mechanism capable of adjusting the tension of the wire member is provided, the tension of the wire member bridged between the movable element and the door can be adjusted to an appropriate value. Thus, a good wire connection state can be obtained. In addition, since a tension adjusting mechanism is provided on the mover side, even if a single-pull door or a double-pull door and a door to be driven are different, the tension can be adjusted with a single tension adjusting mechanism. This is more economical than providing a tension adjusting mechanism for each door.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a one-sided door opening / closing device A. The door opening / closing device A includes a door 3 suspended by a pair of door hangers 1 and 1 on a guide rail 2 and capable of opening and closing, a linear motor 4 for opening and closing the door 3 and a control device 5 and the like. . Although not shown, a detection sensor for actually detecting the approach of a human body or the like is provided, and the door 3 is controlled to open automatically with the detection operation of the detection sensor.

As shown in FIG. 2, a linear motor 4 includes a movable element 7 having flat coils arranged in a line, and slides along the stator 6 between left and right stators 6 and 6 comprising magnets. The motor is a general movable coil type brushless linear motor, and is disposed directly above the door 3 in parallel with the opening and closing movement direction. Left and right stator 6,6
Is disposed inside an outer rail 12 having a downwardly-facing U-shaped cross section, and an inner rail 13 having a horizontally-facing U-shaped cross-section is interposed between the stators 6 and 6 and the mover 7. Reference numeral 14 denotes a power supply line group for supplying electricity to the coil of the mover 4.

FIG. 3 is an enlarged view of the X part of FIG. 1, FIG. 4 is an enlarged view of the Y part of FIG. 1, and FIG. 5 is a sectional view taken along the line ZZ of FIG.
As shown in FIG. 1, the door hangers 1, 1 are bolted to both ends of the upper part of the door 3 in the moving direction and rotatably support rollers 15 that roll on the guide rails 2. The door 3 is suspended on the guide rail 2 by the door hangers 1 and 1 so that the door 3 can be opened and closed freely. The mover 7 is disposed so as to be positioned between the door hangers 1 and 1, and a pair of tension adjusting mechanisms 8 and 8 provided on the mover 7 and a wire provided at the right end of each door hanger 1. Wire members 10 and 11 extending in directions opposite to each other along the moving direction of the mover 7 are provided over the mounting portions 9 and 9. One end 10 of each of the wire members 10 and 11
a, 11a are connected to the tension adjusting mechanism 8, and the wire member 1
The other end 10b, 11b of each of 0, 11 is connected to a wire mounting portion 9, 9.

That is, the wire mounting portion 9 is composed of a mounting portion main body 9a which is detachably bolted to the door hanger 1 and a stopper 9b which is bolted to the main body 9a, and between these two 9a, 9b. The wire members 10 and 11 are fixed by screwing.
As shown in FIG. 5, the guide rail 2 and the linear motor 4 are both mounted on a fixed portion such as a wall via a mounting stay 19.

The tension adjusting mechanism 8 includes a receiving cylinder 16 fixed to the mover 7, a screw portion 17 provided at the base end side of the wire members 10 and 11 and penetrating through the receiving cylinder 16,
A pair of nuts 1 screwed to the screw portion 17 on both sides of the nut 1
8, 18 and a pair of nuts 18, 18
By the operation described above, the wire members 10 and 11 are adjusted and fixed so as to have an appropriate tension.

As described above, since the mover 7 and the door hangers 1, 1 are connected via the wire members 10, 11, vibrations due to the rolling movement of the door 3 and lateral vibrations are not caused by the wires. It is absorbed by the members 10 and 11 and does not transmit to the mover 7. Therefore, due to the lateral swing of the door 3, etc.
The movable element 7 is prevented from being strongly rubbed against the inner rail 13 to become a resistance, so that the propulsive force of the linear motor 4 is effectively exerted, and the door 3 is smoothly driven to open and close.

Next, a description will be given of a door opening / closing device A in a case where a minimum number of parts are added and applied to a double door.

As shown in FIG. 6, a long single wire member 20 whose both ends are connected to a pair of tension adjusting mechanisms 8, 8 of the mover 7 is wound around a pair of pulleys 21, 21. The lower wire portion 20a is attached to the wire attaching portion 9 provided only on the right (right door 3R side) door hanger 1 of the door hangers 1 and 1 of the left door 3L, and the right door 3 is provided.
R to the left side (left door 3) of the door hangers 1 and 1
An upper wire portion 20b is fixed to a vertically long wire mounting portion 22 provided only on the door hanger 1 (L side) to constitute a double-pull type door opening / closing device A.

That is, when the mover 7 moves, the lower wire portion 20a and the upper wire portion 20b move in directions opposite to each other, so that the doors 3L and 3R can be moved in opposite directions to be driven to open and close. It is. In order to change the specification from a single-pull door to a double-pull door, the pair of wire members 10 and 11 are replaced with one long wire member 20 having screw portions 17 and 17 at both ends, and a pair of wire members 10 and 11 are provided. Although it is necessary to add pulleys 21 and 21, on the door side, it is only necessary to replace one standard wire mounting portion 9 with a vertically long wire mounting portion 22, and the door hanger 1 itself can be commonly used. I have. Further, in each of the doors 3L and 3R, one of the door hangers 1 does not require a wire attachment portion, and is economical.

In the above embodiment, the door hanger 1
Although the wire mounting portions 9 and 22 are provided on the door 3, the wire mounting portions 9 and 22 may be directly detachably bolted to the door 3.

[0026]

In the linear motor type door opening / closing apparatus according to any one of claims 1 to 4, the structure is simple by connecting the mover and the door via a pair of wire members extending in mutually opposite directions. Inexpensive construction prevents transmission of door run-out to the mover, provides smooth opening and closing operation with effective propulsion, and can be easily applied to double-sided doors as well as single-sided doors. It can be provided as a thing.

In the linear motor type door opening / closing apparatus according to the second aspect, the door and the door hanger are standardized, and the existing door hanger is provided with a predetermined wire attaching portion. Therefore, there is an advantage that the structure can be simplified and the cost can be reduced. In addition, it is only necessary to change the wire attachment portion when applying from a single-pull door to a double-pull door.

In the linear motor type door opening / closing device according to the third aspect, the wire mounting portion is detachably provided, so that the application from the single-sided door to the double-sided door can be performed more easily, and the versatility is excellent. As provided.

In the linear motor type door opening / closing apparatus according to the fourth aspect, the tension motor is provided on the linear motor side for obtaining a smooth operation state of the door, so that the door to be used is different from one-sided or double-sided. However, it is economical and convenient to perform appropriate tension adjustment of the wire member with a minimum necessary tension adjustment mechanism.

[Brief description of the drawings]

FIG. 1 is a side view showing a one-sided door opening / closing device.

FIG. 2 is a sectional view showing a structure of a linear motor.

FIG. 3 is an enlarged view of a part X in FIG. 1 and shows a wire connection state between a left door hanger and a mover.

FIG. 4 is an enlarged view of a portion Y in FIG. 1 and shows a wire connection state between a right door hanger and a mover.

FIG. 5 is a cross-sectional view taken along the line ZZ of FIG. 1 and is a cross-sectional view showing a suspension structure of the door.

FIG. 6 is a side view showing the double-sided door opening / closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door hanger 2 Guide rail 3 Door 4 Linear motor 6 Stator 7 Mover 8 Tension adjustment mechanism 9 Wire attaching part 10, 11 Wire member 10a, 11a One end of wire member 10b, 11b The other end of wire member

Claims (4)

[Claims] 1. A linear motor having a stator and a mover movable along the stator, wherein the mover includes a pair of linear motors extending in mutually opposite directions along the direction of movement of the mover. A linear motor type door opening / closing device, wherein one end of a wire member is connected, and a wire attachment portion to which the other end of each wire member is connected is provided on the door. 2. The linear motor according to claim 1, wherein a pair of door hangers for suspending the door on a guide rail are arranged in the door moving direction on the door, and each of the door hangers is provided with the wire mounting portion. Type door opening and closing device. 3. The linear motor type door opening / closing device according to claim 1, wherein the wire mounting portion is provided so as to be separable to the door or the door hanger. 4. The linear motor type door opening and closing apparatus according to claim 1, wherein a tension adjusting mechanism capable of adjusting the tension of the wire member is provided on the mover side.