KR200231737Y1 - Device for adjusting a chain tension force of a slide door - Google Patents

Abstract

The present invention is configured to properly adjust the tension of the chain for transmitting the driving force of the motor to the guide roller mounted on the bottom of the sliding door to facilitate maintenance work and to prevent the damage of the sprocket and chain to extend the life Provides a chain tension adjusting device for the sliding door. In view of the configuration, by opening and closing the doorway of the hangar or factory while sliding along the upper guide rail and the lower guide rail 36, the door side frame 11 and the roller shaft 32 through the door side frame ( 11) rotatably mounted to the guide roller 28, the drive motor 22 mounted to the door side frame 11, the drive sprocket 24 of the drive motor 22 and the driven of the guide roller 28 A slide door comprising a chain (30) for operatively connecting a sprocket (26), comprising: first and second extension frames (14, 16) extending inwardly from both sides of the door side frame (11), One end is rotatably mounted to one end of the second extension frame 16 by the hinge pin 48 and the other end is mounted to the end of the second extension frame 16 by height adjustment means so that the height can be adjusted. The drive motor 22 is fixed And a motor bracket 40.

Description

Chain tension adjusting device for sliding doors {DEVICE FOR ADJUSTING A CHAIN TENSION FORCE OF A SLIDE DOOR}

The present invention relates to a chain tension adjusting device of a sliding door, and more particularly, the chain tension of the sliding door configured to properly adjust the tension of the chain for transmitting the driving force of the motor to the guide roller mounted on the lower end of the sliding door. It relates to a control device.

Slide doors are provided at entrances to factories, hangars and various warehouses. Such a slide door is made by joining a steel panel to a door frame, such as wood, by welding or the like, and then attaching a roller to the upper or lower portion to form an integrated structure. In addition, a drive motor is installed in the slide door for automatic opening and closing. When the door is opened and closed, when the drive motor is operated by operating a switch, the driving force of the drive motor is transmitted to the guide roller through the chain and is conveniently rotated. It is possible to open and close the door.

Usually, the guide roller which roll-contacts along the guide rail is rotatably mounted in the lower part of a slide door, and the driven sprocket is fixed to the guide roller integrally. Further, a drive motor is mounted above the slide door at a point spaced apart from the guide roller by a certain distance. The drive sprocket is integrally fixed to the drive motor, and the drive sprocket and the driven sprocket are operatively coupled to each other by a chain, thereby transmitting the rotational force of the drive motor to the guide rollers through these sprockets. Accordingly, the guide roller opens and closes the slide door while being smoothly slid over the guide rail while being rotated by the driving force of the driving motor transmitted through the chain.

However, in the related art, since the position of the drive motor mounted on the slide door is fixed constantly, the process of winding the chain on the drive sprocket and the driven sprocket after mounting the drive motor is very difficult and takes a lot of time in the construction process. . In addition, when the chain is dismantled or recombined for repair and maintenance in the process of use after construction, it is difficult to separate the chain, it takes a lot of time, and it takes a lot of time and effort in adjusting to maintain proper tension. This results in increased maintenance costs.

The present invention for solving the above problems by mounting the drive motor to the slide door to adjust the height of the up and down, by changing the relative distance between the drive motor and the guide roller while adjusting the tension of the chain construction and construction of the chain It is an object of the present invention to provide a chain tension adjusting device for a sliding door that can improve post-maintenance workability and extend the life of related parts.

1 is a front view of a slide door having a chain tension adjusting device of the present invention,

Figure 2 is a cross-sectional view of the slide door is installed a chain tension adjusting device of the present invention,

3 is an enlarged view of part III of FIG. 1;

♣ Explanation of symbols for main part of drawing ♣

10: slide door 11: door side frame

12: Lower frame 14, 16: 1st, 2nd extension frame

18: motor frame 20: motor cover

22: drive motor 24: drive sprocket

26: driven sprocket 28: guide roller

30: Chain 32: roller shaft

34: bearing 36: guide rail

40: motor bracket 42: adjustment bolt

44, 46: Adjusting nut 48: Hinge pin

Chain tension adjusting device of the sliding door of the present invention for achieving the above object is to open and close the doorway of the hangar or factory while sliding along the upper guide rail and the lower guide rail, through the door side frame and the roller shaft A slide door comprising a guide roller rotatably mounted on a door side frame, a drive motor mounted on a door side frame, and a chain for operatively connecting a drive sprocket of the drive motor and a driven sprocket of the guide roller. First and second extension frames extending inwardly from both side surfaces of the side frame, one end of which is rotatably mounted to one end of the second extension frame by a hinge pin, and the other end of which is one end of the second extension frame by height adjusting means. Height adjustable to the top and the drive motor is fixed at the top It characterized in that it comprises a control motor bracket.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the chain tension adjusting device of the sliding door according to a preferred embodiment of the present invention, the same parts as the conventional structure described in Figure 1 are denoted by the same reference numerals.

1 is a front view of a slide door is installed a chain tension adjusting device of the present invention, Figure 2 is a cross-sectional view of the slide door is installed a chain tension adjusting device of the present invention, Figure 3 is an enlarged view of part III of FIG.

Typically, in the case of the slide door 10 which is installed at the entrance of the hangar or various warehouses and factories while sliding along the upper guide rail and the lower guide rail 36, the door side frame 11 is provided to provide an overall appearance. It is coming true. The lower part of this door side frame 11 is equipped with the guide roller 28 which slides along the lower guide rail 36 via the roller shaft 32. As shown in FIG.

In addition, the door side frame 11 is equipped with a drive motor 22 for automatically performing the opening and closing operation of the slide door 10 by rotating the guide roller 28. In order to transfer the power generated from the drive motor 22 to the guide roller 28, the drive sprocket 24 is fixed to the drive motor 22, and the driven sprocket 26 is fixed to the guide roller 28 have. Chain 30 is wound around these drive sprockets 24 and driven sprockets 26, and transfers the operating force of the drive sprockets 24 which are rotated when the drive motor 22 is energized to the driven sprockets 26 to guide them. It allows the rotation of the roller 28.

As shown in FIG. 2, the roller shaft 32 is rotatably mounted to the lower frame 12 of the door side frame 11 via a plurality of bearings 34. In addition, in order to protect the driving motor 22, a motor cover 20 is attached between the upper frame 18 and the lower frame 12 of the door side frame 11.

In the side door of such a configuration, by adjusting the tension of the chain while varying the distance between the drive motor and the guide roller to improve the construction work of the chain and maintenance work after construction, in a preferred embodiment of the present invention The structure in which the drive motor 22 is mounted to the door side frame 11 to enable the vertical height adjustment is illustrated.

To this end, the first and second extension frames 14 and 16 are installed in the door side frame 11, and the motor bracket 40 is capable of adjusting the vertical height of the first and second extension frames 14 and 16. ) Was mounted. These first and second extension frames 14 and 16 extend inwardly from both sides of the door side frame 11 by a predetermined length. One end of the motor bracket 40 in which the driving motor 22 is integrally fixed to the upper end is rotatably mounted to one end of the second extension frame 16 by the hinge pin 48 and the other end to the height adjusting means. It is mounted to one end of the second extending frame 16 so that the height is adjustable.

In a preferred embodiment of the present invention by using the adjusting bolt 42 and the two adjusting nuts (44, 46) height adjustment means of the structure for adjusting the relative spacing between the first extending frame 14 and the motor bracket 40 Adopted.

As enlarged in FIG. 3, the head of the adjusting bolt 42 constituting the height adjusting means is fixed to the flange 40a of the motor bracket 40 by welding or the like. In addition, the adjusting nuts 44 and 46 are screwed up and down to the threaded portion 42a of the adjusting bolt 42 about the flange 14a of the first extension frame 14. In addition, although not shown, a coupling washer may be inserted between the adjustment nuts 44 and 46 and the flange 14a of the first extension frame 14 to prevent loosening.

Therefore, when installing the chain 30 at the time of construction of the slide door 10, or dismantling and coupling the chain 30 for maintenance during use, the first nut while tightening or loosening the two nuts 44 and 46, By adjusting the relative distance L between the extension frame 14 and the motor bracket 40, the distance between the drive motor 22 and the guide roller 28 is adjusted. At this time, the other end of the motor bracket 40 is rotatably coupled to the second extension frame 16 around the hinge pin 48.

By adjusting the distance between the drive motor 22 and the guide roller 28, the relative distance between the drive sprocket 24 of the drive motor 22 and the driven sprocket 26 of the guide roller 28 is changed, thereby It is possible to appropriately adjust the tension of the chain 30 wound on the sprockets 24 and 26.

In the preferred embodiment of the present invention described so far, but illustrated a structure for adjusting the tension of the chain by using the adjustment bolt fixed to the motor bracket 40 and the adjustment nut fixed to the first extension frame, it is common in the art Those skilled in the art will appreciate that various modifications, changes, additions, and the like are possible without departing from the spirit of the present invention. For example, the objectives of the present invention can be achieved by changing the fixing positions of the adjusting bolt and the adjusting nut, and forming a plurality of height adjusting holes in the motor bracket and the first extension frame, and then fixing pins to the height adjusting holes. It is also possible to adjust the spacing by inserting.

According to the present invention described above, by configuring the tension of the chain for transmitting the driving force of the motor to the guide roller mounted on the lower end of the sliding door to facilitate the chain installation work during the installation of the slide door and after construction The maintenance work can be simplified and the life of the motor gear and chain sprocket can be prevented from being damaged.

Claims (2)

By opening and closing the doorway of the hangar or the factory while sliding along the upper guide rail and the lower guide rail 36, the door side frame 11 is interposed between the door side frame 11 and the roller shaft 32. Of the guide roller 28 rotatably mounted on the guide roller 28, the drive motor 22 mounted on the door side frame 11, the drive sprocket 24 of the drive motor 22, and the guide roller 28. A slide door comprising a chain (30) for operatively connecting a driven sprocket (26), First and second extension frames 14 and 16 extending inwardly from both side surfaces of the door side frame 11, One end is rotatably mounted on one end of the second extension frame 16 by a hinge pin 48 and the other end is mounted on the one end of the second extension frame 16 by height adjustment means. The chain tension adjusting device of the sliding door, characterized in that the upper end is provided with a motor bracket (40) to which the drive motor (22) is fixed. The method of claim 1, The height adjusting means has a head and the adjustment bolt 42 is fixed to the motor bracket 40, Sliding door, characterized in that consisting of the adjusting nuts (44, 46) screwed up and down facing the threaded portion (42a) of the adjusting bolt 42 around the flange (14a) of the first extension frame (14) Chain tensioning device.