JPH0714602Y2 - Automatic door opening / closing mechanism - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention relates to an automatic door opening / closing mechanism, which simplifies and downsizes a structure for attaching a door to a belt that is suspended and driven between a motor drive pulley and an idle pulley, and is manufactured. , It is intended to facilitate the assembling and to obtain an accurate attachment.

(Industrial field of application) A mechanism for automatically opening and closing doors by driving a motor.

(Prior Art) It has been conventionally practiced to drive a belt suspended between a drive pulley and a floating pulley by a motor, attach a door to the belt, and automatically open and close the door. That is, it is common to perforate the belt as described above and attach it with a stopper, or fasten it by using pressing metal fittings that crotch on both sides of the belt.

In Japanese Patent Application No. 59-168716 (Japanese Utility Model Publication No. 61-83779), a roller running on a rail is attached to one side of a hanger to which a door is attached, and a mounting seat is provided on the other side of the hanger. There has been announced a door opening / closing device in which a pressing metal fitting having a belt interposed therebetween is positioned and the pressing metal fitting is fixed to the mounting seats on both sides of the belt with bolts and nuts.

In Japanese Utility Model Application No. 59-18307 (Japanese Utility Model Publication No. 60-130980), the belt presser is vertically set and joined with the base end as a fulcrum, and the tip end of the belt presser is attached to the free end side and the hanger. A drive device for an automatic opening / closing door has been proposed in which a belt having a chevron cross section is interposed therebetween, and a tightening member is inserted through the base end side of the pressing fitting and screwed into a nut to tighten the tightening.

(Problems to be solved by the invention) However, in the conventional general ones as described above, it is necessary to attach the belt formed of rubber or the like by perforation or the like. The strength of the belt is reduced, and moreover, it is difficult to obtain an accurate opening / closing operation due to the loosening of the attachment portion between the belt and the door due to aging. In addition, the perforation of the belt itself is extremely mechanically complicated and the number of steps is large, and the perforation and other factors result in deterioration of the belt strength.

On the other hand, applying a presser foot on both sides of the belt and tightening both ends of the presser fitting that is located at the crotch of the belt has the advantage that it can be attached without processing the belt itself, Not only does it require a wide range of press fittings to be fastened on both sides, but also a seat fitting that responds quickly to the width of the press fitting is indispensable.Because tightening bolts are also tightened by multiple pieces on each side of the belt. The use of such wide metal fittings or a large number of bolts for opening and closing a body having a limited number of thickness such as a door is not only disadvantageous in terms of members, but also when opening and closing the door. There is no choice but to increase the size of a traveling mechanism box or the like in which a member is caught by another object or a mechanism for automatic door traveling is accommodated and set.

In the above-mentioned Japanese Utility Model Application No. 59-168716, since the fixing means consisting of bolts and nuts are installed on both sides of the press fitting, a large number of bolts and nuts are required, and the door hanger for suspending the door is required. Since it is necessary to prepare a special and large dedicated member, it is not easy to manufacture and assemble. In particular, the operation of tightening and fixing the belt with four or more sets of bolts and nuts is complicated, and there are disadvantages such as being caught by other objects when the door is traveling and increasing the size of the traveling mechanism.

In the above-mentioned Japanese Patent Application No. 59-18307, a special belt presser is required, that is, it is necessary to prepare a special cross-section structural material that cannot be easily obtained from a general rolled material, and the tightening thereof is required. It is as illustrated and explained that the bolt and nut are required, and it is necessary to remove the belt retainer in order to insert and remove the belt with a trapezoidal cross section inside the belt retainer. It requires a considerable number of man-hours, and neither manufacture nor assembly of the members is easy.

"Construction of the device" (Means for solving the problem) A belt is suspended between a driving pulley and a floating pulley provided with a driving mechanism, a door is connected to the belt, and a rail of a hanger runs along a rail. The belt has a rectangular cross section, the hanger is provided with an L-shaped mounting seat, the base end is joined to the L-shaped mounting seat, and the free end is provided between the distal end and the mounting seat. The L-shaped pressing metal fitting with a square belt in between and the respective sides of the L-shaped mounting metal fitting are positioned in parallel with each other. An automatic door opening / closing mechanism characterized by being screwed into.

(Operation) A belt is suspended between a driving pulley and a floating pulley provided with a driving mechanism, a door is connected to the belt, and the belt is run by a roller of a hanger along a rail. The square cross section facilitates insertion and removal of the belt between the mounting seat and the pressing metal fitting, and also facilitates fastening and mounting of the belt.

Also, by providing an L-shaped mounting seat on the hanger,
The hanger itself may be a general cross-section member, and no special hanger is required to connect with the belt.

Each side of the L-shaped mounting seat and the L-shaped mounting seat are parallel to each other while the base end is joined to the L-shaped mounting seat and the rectangular belt in section is interposed between the free end of the tip and the mounting seat. The L-shaped member, which is generally used as a holding metal fitting, can be appropriately used as the holding metal fitting by placing the member at the position. And the thickness of the rectangular belt with the L-shaped member of the L-shaped section can be properly oriented in the same direction. It is received from the end of the metal fitting, and an effective fastening relationship can be easily formed by a simple L-shaped member and by slightly loosening the clamp.

By tightening the elastic band that is inserted on the base end side of the belt of the L-shaped pressing bracket into the mounting seat, the belt can be easily attached and detached between the mounting seat and the pressing bracket from the same direction. The desired tightening relationship can be achieved by a slight screwing of the tightening member, and a proper connecting end between the belt seats can be easily achieved between the mounting seat and the pressing metal fitting.

(Embodiment) A concrete embodiment of the present invention as described above will be described with reference to the accompanying drawings. As shown in FIG. 3, a drive pulley 5 driven by a driving mechanism 14 such as a motor and Although the rectangular belt 1 having a cross section is suspended between it and the floating pulley 6 which is installed opposite to the above, the door 10 is attached to the belt 1 and the rail 2 is run along the same way as the conventional one described above. In the present invention, as shown in FIG. 1, an L-shaped mounting seat 4 is attached to one side of a hanger member 3 for mounting a door 10, and the base end of the L-shaped mounting seat 4 is a bending fulcrum 7a. The pressing metal fitting 7 is superposed in the same direction, and the above-mentioned rectangular belt 1 in cross section is interposed between the free end 7b of the pressing metal fitting 7 and the mounting seat 4 and tightened to the mounting seat 4 at the fulcrum 7a side of the pressing metal fitting 7. The child 8 is screwed in,
A roller 9 is provided on the other side of the hanger member 3 to run along the rail 2.

It is to be noted that the belt 1 having a rectangular cross section as shown in FIG. 1 is used as shown in FIG. 1, and the belt provided as a long product is used at each mounting site. When the belt is cut to match the required length and suspended between the pulleys 5 and 6 as described above, the connection of the cut ends of the belt can be performed at the attachment portion by the pressing metal fitting 7 as described above. The belt connection and the assembly can be achieved at the same time only with the tightening member 8 without the need for connecting the belts.

That is, according to the present invention as described above, the belt end is set between the mounting seat 4 and the pressing metal fitting 7 so as to face each other, and the belt is tightened on the free end side of the pressing metal fitting 7 by only slightly tightening the clamp 8. It is clear that the connection and the attachment to the door can be achieved at the same time, and by using the holding metal fitting 7 having an appropriate length as shown in FIG. 2, an appropriate tightening can be performed within the length range of the holding metal fitting 7. As a result, it is possible to ensure stable attachment of the door 10 and an appropriate opening / closing action for a long period of time.

[Advantages of the Invention] According to the present invention as described above, the L-shaped holding metal is used for the belt driven by the motor in the same manner as the L-shaped mounting seat so that the belt can be properly attached to the belt, and the belt is simply used. Since it is only necessary to screw in the fastener on one side, it is very simple and compact, and it does not damage the belt and is easily manufactured with a compact structure using a general L-shaped member. In addition, it has an effect that it can be easily and accurately attached and detached by only screwing or unscrewing the elastic band clamp, which is a great effect in practical use.

[Brief description of drawings]

The drawings show the technical contents of the present invention. FIG. 1 is a sectional side view of a belt tightening portion in the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a general structural relationship. It is a front view. However, in these drawings, 1 is a belt, 2 is a rail, 3 is a hanger member, 4 is a mounting seat, 5 is a drive pulley,
6 is a floating pulley, 7 is a holding metal fitting, 7a is its bending fulcrum, 7b
Is a free end, 8 is a tightener, 9 is a roll, and 10 is a door.

Claims (1)

[Scope of utility model registration request] 1. A belt, wherein a belt is suspended between a drive pulley provided with a driving mechanism and a floating pulley, a door is connected to the belt, and the rail is run by a roller of a hanger. An L-shaped mounting seat is provided on the hanger with a rectangular cross-section, the base end is joined to the L-shaped mounting seat, and the rectangular belt cross-section is interposed between the free end of the tip and the mounting seat. Align the sides of the L-shaped mounting bracket and the L-shaped mounting seat in parallel,
An automatic door opening / closing mechanism, characterized in that a tightening member inserted on the base end side of the belt of the shape holding metal fitting is screwed into the mounting seat.