JPH063091B2 - Sliding door with automatic door closing mechanism - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sliding door with an automatic door closing mechanism that can automatically close the sliding door after opening the sliding door.

[Background Art] In a conventional automatic door-closing device for a sliding door, an automatic door-closing unit is installed inside the outer frame, and the sliding door is automatically closed by this automatic door-closing unit. The closing unit and sliding door were linked together. Therefore, when the existing ordinary sliding door device is improved to one that automatically closes, the outer frame and the sliding door have to be replaced, which has a drawback that the cost is high and the construction is troublesome.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and the object of the present invention is to automatically close doors by changing sliding doors without changing the outer frame. It is an object of the present invention to provide a sliding door with an automatic door closing mechanism which requires a low cost for improvement to a closed door and requires no labor for construction.

DISCLOSURE OF THE INVENTION In a sliding door with an automatic door closing mechanism of the present invention, an automatic door closing unit main body 4 in which a mainspring device 1 and a damper device 2 are housed in a housing 3 is mounted in an upper frame 6 of a sliding door 5 to form a damper. The piston rod 7 of the device 2 and the mainspring tape 8 of the mainspring device 1 are projected from the side end of the sliding door 5 to connect the tip of the piston rod 7 and the front end of the mainspring tape 8 to the connecting fitting 9.
It is characterized in that the connecting fitting 9 is attached to the vertical frame 10, and the drawbacks of the conventional example are solved by the configuration as described above. In other words, by incorporating the automatic door closing unit main body 4 into the upper frame 6 of the sliding door 5 so that it can be automatically closed, the sliding door 5 can be automatically closed by simply replacing it. The cost is low and the construction does not require time and effort.

Hereinafter, the present invention will be described in detail with reference to Examples.

As shown in FIG. 1, the sliding door 5 has a frame formed by an upper frame 6, a lower frame 11, left and right vertical frames 12 and partition frames 13, and a face plate 14 such as glass is stretched. The upper frame 6 is provided with a storage space 15 whose upper part is opened, and the vertical frame 12 is provided with a notch 16 at the upper end. As shown in FIG. 4, the automatic door closing unit main body 4 is formed by housing a mainspring spring device 1, a damper device 2, and a pulley 24 inside a housing 3.
In the damper device 2, a piston 18 is housed inside a cylinder 17, a piston rod 7 connected to the piston 18 is projected from one end of the cylinder 17, and an intake / exhaust port 19 is provided at the other end of the cylinder 17. The piston rod 7 and the mainspring tape 8 of the mainspring spring device 1 are projected from the housing 3 (the mainspring tape 8 is projected via the pulley 24). The tip of the piston rod 7 and the tip of the mainspring tape 8 are connected to a connecting fitting 9, and the connecting fitting 9 is provided with a hook 21 for hooking on a hook 20 to be hooked of a vertical frame 10 described later, as shown in FIG. There is.
The automatic door closing unit body 4 is inserted into the storage space 15 of the upper frame 6 of the sliding door 5 and is detachably attached with a screw tool.
At this time, the piston rod 7 and the mainspring tape 8 are inserted into the notches 16. Further, since the left and right vertical frames 12 have the notches 16, the connecting metal fitting 9 can be freely attached so as to face the right side or the left side. Outer frame A is second
As shown in FIGS. 3 and 4, the left and right vertical frames 10 and the upper horizontal frame 2
2 and a seamless 23 below the horizontal frame 22. A pair of sliding doors 5 are openably and closably attached to the opening surrounded by the vertical frame 10 and the eyeless 23 of the outer frame A. In the case of this embodiment, the automatic door closing unit body 4 is attached to one of the sliding doors 5 on the front side, but it may be attached to the other sliding door 5 or both. The connection fitting 9 is connected to the vertical frame 10 by hooking the hook 21 on the hook 20 to be hooked. Then, when the sliding door 5 is opened as shown in FIG. 3, the piston rod 7 and the mainspring tape 8 come out. In this damper device 2, as shown by the arrow in FIG. 6 (b), air enters from the intake / exhaust port 19, and in the mainspring spring device 1, the mainspring tape 8 is pulled out to accumulate spring force. When the hand is released from the state where the sliding door 5 is opened, the spring tape accumulated in the mainspring spring device 1 pulls the mainspring tape 8 as shown by the arrow (a) in FIG. 6 to close the sliding door 5. At this time, in the damper device 2, air comes out from the intake / exhaust port 19 as shown by the arrow in FIG. 6 (a), but since it does not come out at a stretch, it acts as an air cushion to prevent the shock from closing.

[Effects of the Invention] As described above, the present invention incorporates the main body of the automatic door closing unit into the upper frame of the sliding door. Therefore, when replacing the existing sliding door with the one that automatically closes, it suffices to change the sliding door and the cost is low. It can be installed easily, and it can be installed in an opening that is seamless, and it can be installed simply by opening and closing the sliding door and attaching the connecting bracket to the vertical frame. In this respect as well, construction can be facilitated. Further, since the automatic door closing unit main body also has a damper device in addition to the mainspring spring device, it is possible to buffer the door slowly when it is automatically closed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is a front view showing a state in which the sliding door is attached to an outer frame and the sliding door is closed, and FIG. 3 is a front view in which the sliding door is opened. FIG. 4 is a perspective view of the same automatic door closing unit main body, FIG. 5 is a front view of the same connecting metal fitting attached to a vertical frame, and FIGS. 6 (a) and (b) are the same automatic door closing unit main body. 2 is an explanatory view for explaining the operation of the main spring device, 2 is a damper device, 2 is a damper device, 3 is a housing, 4 is an automatic door closing unit main body, 5 is a sliding door, 6 is an upper frame,
7 is a piston rod, 8 is a mainspring tape, 9 is a connecting fitting, and 10 is a vertical frame.

Claims (1)

[Claims] 1. A self-closing unit body having a mainspring spring device and a damper device housed in a housing is mounted in an upper frame of a sliding door, and a piston rod of the damper device and a mainspring tape of the mainspring device are attached to side ends of the sliding door. A sliding door with an automatic door closing mechanism, characterized in that the tip of the piston rod and the tip of the mainspring tape are connected to a connecting metal fitting, and the connecting metal fitting is attached to a vertical frame.