JPH09303061A - Opening and closing device of door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To travel a trolley on a guide rail by a traveling roller in a device for opening and closing a door body by traveling the trolley connected to a door body on the guide rail. SOLUTION: A trolley 11 connected to a door body 1 is formed of a trolley body 12 and a trolley joint 15. Traveling rollers 13 protruded outward are provided on both side edges of the trolley body 12, a chain guide 14 is provided on the lower edge of the trolley body, and a driving chain 9 housed within the chain guide 14 is arranged between a trolley rail 4 and the trolley body lower edge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a door opening / closing device which is installed at an entrance of a building or the like.

[0002]

2. Description of the Related Art Today, a door is connected to a trolley that is moved by being guided by a guide rail laid on the ceiling, and the door is pulled down in accordance with the movement of the trolley, and a storage posture that the door is stored in a substantially horizontal state on the ceiling. A device which can be opened and closed is known, for example, from Japanese Utility Model Laid-Open No. 5-7893. In this device, the guide rail is formed of a substantially L-shaped mold material, and a concave groove formed in the trolley is slid on the lower piece of the guide rail to open and close the guide rail.

[0003]

However, since the trolley slides on the guide rails in the conventional device, the sliding resistance is inevitably increased and the smoothness is deteriorated, and an unpleasant sliding noise is generated. There is a problem of doing. Further, in this structure, since the trolley is arranged below the guide rail, it is inevitable that the vertical height is sacrificed, and there is also a problem that the opening height of the entrance / exit is reduced accordingly. Further, in the case where the trolley is opened and closed by the motor-driven movement of the rope and other ropes that are endlessly routed between the front and rear ends of the guide rail, it is necessary to secure a routing space for the chain. In addition, it is necessary to secure an installation space for the chain guide so that the upper half of the routed chain does not hang down and interfere with the trolley. There is a problem such as sacrifice, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in order to solve these problems, and a guide rail laid in the front and rear direction on the ceiling side. In the door configured so that the guide rail moves the trolley connected to the door, the trolley can be transformed into a closed posture in which the trolley is pulled down in a standing posture and a storage posture in which the trolley is pulled up in a horizontal state. Roller rolling surfaces are formed on the lower sides of the left and right side pieces facing each other in the state where the bottom is opened, and the trolley body having the rollers rolling on the roller rolling surface is provided on both sides of the guide rail on the trolley. It is provided so as to enter the space portion formed in. As a result, the trolley can be driven by the rollers to be smooth and quiet, and the trolley can be inserted into the space between both sides of the guide rail main body to secure a large opening height. In this, the present invention, when the trolley is moved by moving the endlessly routed rope body between the front and rear end portions of the guide rail by motor drive, in the laying space of the rope body, It may be a space formed between both sides of the guide rail, so that further compactification can be achieved.

[0005]

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates based on the drawing of FIG. In the drawing, 1
Is a door body built in the opening, and the door body 1 is formed in a series by rotatably connecting a plurality of panels 2 with a connecting member such as a hinge. Guide rollers 2a are projected from both sides. In the door body 1, the guide roller 2a is a substantially L-shaped guide rail in which the guide roller 2a is composed of a vertical rail portion 3a standing upright on both sides of the opening and a storage rail portion 3b arranged along the ceiling surface. When the door body 1 is guided and moved, the door body 1 is transformed into a standing posture in which the door body 1 stands up and closes the opening, and a storage posture in which the door body 1 opens horizontally and opens the opening. ing.

Reference numeral 4 denotes a trolley rail (a guide rail of the present invention) which is located substantially in the center of the opening in the left-right direction and is arranged along the ceiling surface. The trolley rail 4 is a support side 4a facing the ceiling. And a pair of side edges 4b hanging from both side edges of the rail edges 4c, which are bent inward so as to face each other at the tip edges of the both side edges 4b.
Are formed. A rail groove 4d is formed between the pair of left and right rail sides 4c and the upper side support side 4a, and the gap between the opposing sides of the rail side 4 is open downward. On the other hand, an opening / closing bracket 5 is provided at the rear end of the trolley rail 4 on the indoor side, and an electric motor 6 is fixedly installed therein. The driving force of the electric motor 6 passes through a torque limiter 6a and is interlocked with a drive sprocket 6b that is rotatably supported by the bracket 5 in a state of substantially facing the rail groove 4d. An outdoor bracket 7 is provided at the outdoor end of the trolley rail 4, and a driven sprocket 8 is rotatably supported on the trolley rail 4 so as to face the drive sprocket 6b. An endless drive chain 9 described later is suspended between 6b and 8b, and is set so that the drive chain 9 is forcibly reciprocated as the electric motor 6 is driven.

The drive chain 9 has two sprockets 6
Both ends are connected to each other by a connecting member 10 which is located on the lower side routed by b and 8, and the connecting member 10 has an endless shape. The driving chain 9 is formed in a columnar shape, and both ends thereof are connected to the respective ends of the drive chain 9, and further, a locking hole 10a is vertically penetrated in the middle portion of the rail length direction. . Here, the pin shaft 7a that supports the driven sprocket 8 is configured to be movably fixed in a long hole 7b formed in the outdoor bracket 7 and extending in the rail length direction. By adjusting the movement of the driven sprocket 8 by adjusting the movement in the long hole 7b, the tension of the drive chain 9 can be adjusted. Further, of the drive chains 9 routed between the two sprockets 6b and 8, the upper drive chain 9 is
The trolley rail 4 is drawn around in a state of being supported by a chain holder 9a provided with a proper gap on a supporting side 4a which is a groove bottom of the trolley rail 4, whereby the upper drive chain 9a is supported.
Care is taken to avoid problems such as drooping.

Reference numeral 11 denotes a trolley to which the connecting member 10 is detachably connected, and a trolley body 12 constituting an upper portion of the trolley 11 has a generally square cross section.
A pair of both sides 12b protruding upward from the lower side 12a face each other in the rail length direction. Both sides 12b
A pair of traveling rollers 13 are axially supported at the upper end of each of the rollers, and the traveling rollers 13 are set to roll on the pair of rail sides 4c. Is set to be narrower than that between the rail sides 4c facing each other, and the trolley 11 travels on the trolley rail 4 in such a positional relationship that the upper end of the trolley body 12 is inserted into the rail groove 4d. Is set to. Further, a chain guide 14 is integrally provided on the upper side surface of the lower side 12a of the trolley body, and the connecting member 10 is set so as to be retractable and retractable in the rail length direction. A through hole 12c is formed in the housing so as to face the locking hole 10a of the connecting member 10 to be housed.

On the other hand, a trolley joint 15 is integrally provided on the lower side surface of the lower side 12a of the trolley body,
A pair of leg sides 15a hanging downward of the trolley joint 15 face each other in the rail length direction. One end of the leg 15a has the door body 1
The other end of a connecting arm 2c, which is rotatably provided substantially centrally of the uppermost panel 2b in the left-right direction, is rotatably supported, whereby the trolley 11 and the door body 1 are connected. There is. Further, the stopper member 16 is movably arranged vertically between the leg sides 15a and facing the trolley body through hole 12c.
Is the leg side 1 in the long hole 16a formed long in the vertical direction.
The pin 15b supported between 5a is inserted into the trolley joint 15 in a state of being inserted. An ammunition 17 is interposed between the stopper member 16 and the trolley joint leg side 15a, and the stopper member 16 is
In the natural state, the elongated hole 16
It is set so that the pin 15b abuts on the lower edge of a, and in this state, the locking portion 16 at the upper end of the stopper member 16
b is the locking hole 1 of the connecting member 10 in the chain guide 14.
It is set so that the trolley 11 and the connecting member 10 are fitted in the 0a and are held in a locking posture in which the trolley 11 and the connecting member 10 are integrated. Then, the trolley 11 is forcibly moved as the drive chain 9 reciprocates by driving the electric motor 6, whereby the door body 1 is set to perform the opening / closing operation described above. ing.

On the other hand, the lower end portion of the stopper member 16 is provided with a distal end portion of an operation lever 18 having an operation string 18a provided at a proximal end portion so as to be able to be raised and lowered through a pin 16c. In the natural state of the stopper member 16, the lever side 18b is the trolley joint leg 15
It is set so that it is maintained in a lying posture in which it contacts the lower edge of a. On the other hand, when the operation string 18a is pulled, the operation lever 18 is rotated so that the tip edge 18c moves toward the leg side 15.
In the upright posture in which it abuts on the lower edge of a, the bearing position of the operation lever 18 is such that the length B to the tip edge 18c is longer than the length A to the side edge 18b (A <B). ing. Then, the stopper member 16 is pulled downward against the ammunition 17 as the operating lever 18 is changed to the upright posture.
The pin 15b is locked to the upper edge of a, and the locking portion 16b is in a releasing posture in which it is pulled out from the connecting member locking hole 10a. In the releasing posture, the integration of the trolley 11 and the drive chain 9 is released. Has become. In addition, the front edge 1 of the operating lever 18
A corner portion between 8c and the side edge 18b is formed in a chamfered shape, and is configured so that the up / down deformation operation in a state of resisting the ammunition 17 can be smoothly performed.

Incidentally, with the stopper member 16 in the releasing posture, the trolley 11 drives the chain 9 in case of an emergency such as a power failure.
After the door body 1 is manually removed and the door body 1 is manually opened / closed, the manual operation state is changed to the automatic opening / closing state by the electric motor 6. In this case, both ends of the connecting member 10 in the rail length direction are It is formed in a tapered guide portion 10b that is cut out in an inclined shape, and when the drive motor 6 is driven to move the drive chain 9, the connecting member 1 of the drive chain 9 is formed.
0 is inserted into the chain guide 14 of the trolley 11,
It is set to automatically lock the stopper member 16 in the locking posture protruding upward by setting the operating lever 18 in the lying posture in advance. Here, 14a and 12d are inclined guide sides, respectively.

Reference numeral 19 is a winding device for assisting the opening and closing operation of the door body 1 by the trolley 11. The winding device 19 is elastically mounted on a winding shaft 19a and is always urged in the winding direction. The wire 20 connected to the lowermost panel body of the door body 1 is balanced with the urging force of the winder 19b and the weight of the door body 1, and the winding drum 21 provided at both ends of the winding shaft 19a. It is configured to be wound up and unwound in order to reduce the load on the electric motor 6.

In the embodiment of the present invention configured as described above, in the door body 1, the trolley 11 connected to the drive chain 9 is driven by the drive of the electric motor 6 by the ON operation of a switch (not shown) or the like. By forcibly reciprocating while being guided by 4, the opening portion is opened and closed by moving between the closed posture positioned on the vertical rail portion 3a and the open posture positioned on the storage rail portion 3b. In this case, in the trolley 11, the traveling rollers 13 provided on both sides 12b of the trolley body 12 are provided on the trolley rail 4.
By rolling on the rail side 4c, the forcible reciprocating movement is carried out. As a result, the sliding resistance can be reduced and the trolley 11 can be moved smoothly, and the movement noise is also quiet. be able to.

In addition, in this structure, the trolley body 12 to which the traveling roller 13 is attached has a substantially square cross section, and the traveling roller 1 is projected outward from both side edges 12b.
Since 3 is attached and the chain guide 14 is attached to the lower side 12a, the upper part of the trolley body 12 can be inserted into the rail groove 4d from the gap between the tip edges of the rail side 4c, and that much trolley. The vertical dimension of the rail 4 and the trolley 11 is reduced, which allows the members to be made compact and
It is possible to avoid the problem that the opening height becomes lower than necessary.

Further, the drive chain 9 which is drawn around in the vertical direction is provided in the space between the support side 4a on the trolley rail 4 side and the lower side 12a of the trolley body. Since only the chain 9 is arranged, the space is sufficient as long as the upper and lower drive chains 9 are arranged so as not to interfere with each other, and the conventional trolley is slid on the guide rail. Unlike the one in which the traveling member and the drive chain are arranged in a stacked manner in the vertical direction, the trolley itself does not become long in the vertical direction, and further compactification can be achieved.

[Brief description of drawings]

FIG. 1 is a rear view of an opening / closing device.

FIG. 2 is a plan view of the switching device.

FIG. 3 is a side view of the opening / closing device.

FIG. 4 is a perspective view of a main part.

FIG. 5 is a side view of the trolley.

FIG. 6 is a front view of the trolley.

FIG. 7 is a bottom view of the trolley.

FIG. 8 is a front view of the trolley showing a traveling state of the guide rail.

FIG. 9 is an explanatory perspective view showing a connected state of drive chains.

FIG. 10 is a side view of an essential part showing a manual operation state.

[Explanation of symbols]

 3 Guide Rail 4 Trolley Rail 6 Electric Motor 9 Drive Chain 10 Connecting Member 11 Trolley 12 Trolley Main Body 13 Traveling Roller 14 Chain Guide 15 Trolley Joint 16 Stopper Member 17 Ammo 18 Operating Lever 19 Winding Device

Claims (2)

[Claims] 1. A closed posture in which a trolley connected to a door is guided and moved to a guide rail laid on the ceiling side in the front-rear direction and a closed posture in which the trolley is vertically lowered and a storage posture in which the trolley is horizontally pulled up. The guide rail has roller rolling surfaces formed on the lower sides of the left and right sides of the guide rail which face each other with the bottom open, and the trolley has the roller rolling surface. A door opening / closing device in which a trolley body having a roller rolling on a moving surface is provided so as to enter a space formed between both sides of the guide rail. 2. The trolley according to claim 1, wherein the trolley is moved by motor-driven movement of an endlessly routed rope between the front and rear ends of the guide rail. Is a door opening / closing device with a space formed between both sides of the guide rail.