JPH0477113B2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a technology for a device (hereinafter referred to as an automatic closing device) that automatically closes a fishing sliding door (hereinafter referred to as a sliding door) of a movable partition. ).

BACKGROUND TECHNOLOGY Conventionally, a self-closing device using this mainspring used a wire as a pull rope wound around the circular upper surface of a bobbin-shaped rotating drum, and the self-closing device was attached directly to the upper end of a sliding door. It's summery.

The disadvantages of this conventional self-closing device are that the wire rope of the towline is difficult to adapt to the rotating drum, easily deforms as the number of times it is used increases, and once deformed, it cannot be restored to its original shape, and the rope has friction with the rotating drum. When the rotary drum rotates around its shaft, it also generates frictional noise. The rotating drum rotates by the slow unwinding and unwinding of a mainspring attached to the shaft, but deformation of the wire tends to impair smooth rotation. Furthermore, since the force of pulling the heavy and large sliding door is applied to the rotation of the rotary drum on its shaft, no countermeasures have been taken despite the fact that there is severe friction with the shaft. Furthermore, in the prior art, adjustment of the winding of the mainspring (for example, setting it to 1 kg or setting it to 2 kg) is carried out using a casing plate on one side of the rotating drum. In other words, it is only possible to handle sliding doors that open to the right or to the left. In addition, the conventional type is attached to the upper end of the sliding door, and the open end of the pull rope is attached to the stud with the rail part (see Figure 7 of the drawing), so the mainspring is always slightly loose. It is fixed and its repulsion force is reduced. In addition, in the conventional self-closing device, even if the tension force of the mainspring is set to 1 kg as mentioned above, the final part
It was 14Kg, and there was a big change in the pulling force. Furthermore, the conventional type was used for sliding doors weighing about 40 kg, and was not useful for modern heavy sliding doors weighing 60 to 100 kg. Conventional devices often cannot solve the above problems due to restrictions on mounting on the sliding door.

The present invention solves the drawbacks and problems of the conventional self-closing sliding door.

DISCLOSURE OF THE INVENTION The present invention makes it possible to increase the size of the mechanism by attaching the self-closing device to an item other than a sliding door, such as the end of a rail, thereby eliminating the conventional restriction that the width be within the width of the sliding door. By attaching the towline to the fishing wheel above the handle, the towline can be pulled out smoothly, the length of the mainspring is increased, and the winding can be done from either the left or right side of the self-closing device. It can be used for both right-handed and left-handed openings, and the easily deformable wire is replaced with a fishing line (for example, a nylon core wrapped with polyethylene terephthalate fiber).
Furthermore, in order to ensure smooth rotation on the shaft of the rotating drum without the trouble of friction noise, radial ball bearings are placed on the left and right sides of the rotating drum on the shaft.
The four corners of the left and right casing plates are connected and fixed using hollow assembly pipes for easy installation.

BEST MODE FOR CARRYING OUT THE INVENTION In order to describe the present invention in detail, the same will be explained below with reference to the accompanying drawings.

1 to 5 show the self-closing device 1 itself of the present invention, and FIG. 6 shows a state where this is used for a sliding door 2 and a rail 3. FIG. 7 shows how the conventional self-closing device 4 is used.

First, the structure of the present invention according to FIGS. 1 to 5 will be described. The rotating drum 5 has a bobbin-like shape having a horizontal central opening 8 for accommodating a shaft 6 and a mainspring 7. , a small cylindrical rotating ring part 10 is integrally provided surrounding the central opening and centered at the same center, and radial ball bearings 11, 11 are installed in the small cylindrical rotating ring part 10.
It accommodates. One end (not shown) of the mainspring 7 is fixed to the shaft 6 by a known method,
The other end (not shown) is connected to the rotating drum 5. The left and right ends of the shaft 6 are rectangular and form a tightening part 12, and a tightening screw 13 is wound around the outer side of the shaft 6 to tightly wind the mainspring 7.

A tow rope 15 is attached to the circular upper surface 14 of the rotating drum 5.
One end (not shown) is fixed to the circular upper surface 14 and wound in order from the end, and the other end of the tow rope 15 is open and a connecting ring 16 for connection is attached. The drag line 15 uses a fishing line 17 made of nylon rope with strong tensile strength, and in the example, a nylon core is wrapped with polyethylene terephthalate fiber, and the thickness is 157 mm.
It is. The body 18 is formed as described above.

In the present invention, the main body 18 is used in an upright form as shown in FIGS. 1 and 3, and substantially square casing plates 19, 19 forming a casing are attached to the left and right parts of the main body 18. A shaft hole 20 is opened in the center of the casing plate 19, and the shaft 6 in the main body 18 is rotatably protruded through the shaft hole 20 and is locked therein. A substantially circular adjustment plate 21, which is considerably smaller than the casing plate 19, is attached to the tightening portion 12 at the tip of the shaft 6. In the embodiment, a receiving hole 22 having the same shape as the rectangular shape is opened in the center of the adjusting plate 21, the tightening part 12 is inserted into the receiving hole 22, and the tightening screw 13 is attached to it, so that the adjusting plate 21 can be rotated. That's what I'm saying.

Further, the adjustment plate 21 is provided with a notch 23 around the circumference of the circle, and when the tightening screw 13 is turned to tightly wind and adjust the mainspring 7, the locking screw 24 for fixing the winding state is inserted into this notch. 23 and fixed to the casing plate 19, the adjustment plate 21 is fixed.

On the other hand, attach the left and right casing plates 19, 19 to the hollow assembled pipes 25, 2 at their four corners.
5, 25, and 25 are also connected and fixed to form the self-closing device 1 for a sliding door of the present invention. In the embodiment, one of the assembly pipes 25 is also used as the outlet 26 of the connecting ring 16 of the towline 15. In the present invention, both the left and right casing plates 19, 19 have adjustment plates 21, 21, respectively.

Now, to describe how to use the self-closing device 1 of the present invention with reference to FIG. 6, the sliding door 2 has a fishing wheel 27, 2
7, the self-closing device 1 and the sliding door 2
Attach it to the end of the rail 2 on the handle 28 side. For installation, connect the connecting bolts 29, 2 to the assembled pipe 25.
9, 29, 29 and fixed to the rail 3 or the like. In this case, the connecting ring 16 is connected to the fishing wheel 2.
Position it in 7 directions. Next, if the connecting ring 16 is connected to the end of the fishing wheel 27 that is closer to the handle 28,
Installation is complete.

When the sliding door 2 is pulled in the opposite direction with the handle 28, the fishing wheel 27 starts running on the rail 3 while pulling the towline 15, the towline 15 rotates the rotating drum 5, and the rotating drum 5 is wound up. A spring 7 begins to loosen and extend, and the sliding door 2 opens wide. When the force applied to the sliding door 2 is removed, the mainspring 7 begins to unwind, causing the rotating drum 5 to rotate in the opposite direction, and the rotating drum 5 begins to pull the tow rope 15 back around the circular upper surface 14 again, and the sliding door eventually closes. 2 automatically returns to its original closed state.

Comparing this with the conventional self-closing device 4 in FIG. 7, the conventional self-closing device 4 has a sliding door 2
It is installed at the top end and usually has a fishing wheel 2 as shown in the figure.
7 and 27, so when the sliding door 2 is closed, the pull rope is already pulled out to about half the width of the sliding door, and the mainspring is also already loosened accordingly. This causes deformation of the wire pull rope 30 and deterioration of the mainspring 7. Conventional self-closing devices have a width within the width of the sliding door 2, and as mentioned above, the length of the mainspring 7 and the wire pull rope 15 is restricted, and it must be firmly fixed on the sliding door 2. However, there were some concerns that the fixed part was narrow and small. In the present invention, the towline 15 is not pulled out initially, the fishing line 17 is made of a nylon rope with soft flexibility, and does not cause deformation or friction noise, and can be attached in a wide area. By using the assembly pipe 25, the fixing can be done easily and firmly.

Thus, the present invention can be used for a sliding door 2 weighing about 100 kg, and in the above-mentioned change in tension, the final tension set at 1 kg is 12 kg, which is used in an average and stable state over almost the entire mainspring 7. Furthermore, by using the radial ball bearing 11, it is possible to use the device smoothly.

Industrial Applicability As described above, the present invention opens up new prospects for self-closing devices for sliding doors, and has extremely high industrial applicability.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view according to an embodiment of the present invention, FIG. 2 is a perspective view of the same, and FIG.
4 is a side view of the same, FIG. 5 is a perspective view showing the structure of the same, and FIG. 6 is a partially omitted view of the same showing how to use the same. FIG. 7 is a partially omitted elevation view showing how to use a conventional self-closing device. Code, 1... Self-closing device, 2... Sliding door, 3... Rail, 5... Rotating drum, 6... Shaft, 7... Mainspring, 8... Center opening, 10... Radial ball bearing, 11... ...Rotating ring part, 12...Tightening part, 1
3... Tightening screw, 15... Pull rope, 16...
Connection ring, 18...main body, 19...casing plate,
20...Shaft hole, 21...Adjustment plate, 22...Receiving hole, 25...Assembling pipe.

Claims (1)

[Claims] 1. A shaft having a mainspring tightening part at the left and right ends is inserted through the horizontal center opening of a bobbin-shaped rotating drum, and one end of the mainspring is fixed to the shaft inside the rotating drum. The other end of the mainspring is connected, and a small cylindrical rotating ring is integrally provided on the bobbin side plate of the rotating drum surrounding the central opening to accommodate a radial ball bearing, and the outer peripheral surface of the rotating drum is For example, using a fishing line with a nylon core wrapped with polyethylene terephthalate fiber as a towline, one end is fixed to a rotating drum and wound in order, and a connecting ring is attached to the other open end to form the main body. A casing plate, which is a substantially square plate, is attached to the left and right side portions to close it, and a shaft in the main body is protruded outward and rotatably locked in a shaft hole opened in the center of the casing plate. , attach a nearly disk-shaped adjustment plate, which is considerably smaller than the casing plate, to the center of the casing plate and connect it to the tightening part at the tip of the shaft, turn the adjustment plate to wind the mainspring, and attach the adjustment plate to the casing plate. The left and right facing casing plates are connected and fixed at their four corners with hollow assembly pipes, and the self-closing device is connected to other members such as the end of the rail, and in the upper direction of the sliding door handle. A self-closing device for a sliding door, characterized in that it is used by being fixed through the assembly pipe.