JP2599477Y2 - Overdoor opening and closing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for interconnecting a plurality of panels for raising and lowering between left and right guide rails and an overdoor opening / closing apparatus having an improved panel lifting drive system.

[0002]

2. Description of the Related Art FIG. 5 is a schematic front view showing a conventional overdoor opening and closing device, and FIG. 6 is a side view of FIG. In the figure, reference numeral 1 denotes a pair of left and right guide rails arranged upright on both sides of a door opening / closing opening, and these guide rails 1 are formed of a U-shaped member having a vertically long opening on the opposite surface side. Such a guide rail 1 is, as shown in FIG.
It comprises a vertical rail section 1A, and a top horizontal rail section 1B that curves at the upper end of the vertical rail section 1A and that extends gently and obliquely upward.

[0003] Reference numeral 2 denotes a plurality of panels which move up and down between the two guide rails 1 and which are connected to each other in series by wires 3 on the right and left sides of each of the panels 2 via pins. The wire 3 is wound and unwound by a hoist (not shown).

Next, the operation will be described. A panel 2 is provided between the vertical rail portions 1A of the left and right guide rails 1.
When the hoist winds up the wire 3 in a state where is closed, the panel 2 rises and shifts to the top horizontal rail portion 1B, thereby opening the space between the vertical rail portions 1A, and The space between the top horizontal rails 1B is closed. When the hoist winds up the wire 3 from this state, the panel 2 between the top horizontal rails 1B descends between the vertical rails 1A, whereby the vertical rails 1A are closed, and The space between the top horizontal rails 1B is opened.

[0005]

The conventional overdoor opening / closing device is constructed as described above, and the left and right guide rails 1 are provided.
Since the upper and lower panels 2 that open and close between the upper and lower panels are connected and suspended by simple wires 3 on both sides thereof, the wires 3 that receive a large panel load may be extended early.
Metal fatigue is caused, and as a result, the durability of the wire 3 is inferior, for example, a gap is generated between the panels 2.
There is a problem that the opening and closing operation of the panel 2 is hindered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to improve the durability of the panel connecting member without causing an elongation phenomenon and fatigue, and to perform the opening and closing driving of the panel smoothly and reliably at all times. It is an object of the present invention to provide an over-door opening and closing device that can perform the operation.

[0007]

In order to achieve the above object, the present invention provides an over-door opening / closing apparatus for opening and closing a pair of left and right guide rails with a plurality of panels in a vertical direction. This panel is connected to bend and rotate freely, and a series of panel elevating drive system chains are connected to the panel connecting portion on each of the left and right sides along both sides of each panel, and the panel elevating drive system chain is connected to the panel connecting portion. Only the panel can be bent and rotated, and the other parts cannot be bent and rotated and mesh with the sprocket of the panel lifting drive system.

[0008]

According to the overdoor opening / closing device of the present invention configured as described above, the chain connecting the upper and lower panels for opening and closing between the left and right guide rails in series on both sides thereof is a conventional one. Since the elongation phenomenon and fatigue are less likely to occur and the durability is remarkably improved as compared with the case of the wire, the panels can be always held without any gap.
Moreover, the chain as a panel linking member is bendable and rotatable only at the panel hinge portion, which is a connecting portion between panels, and is not bendable and rotatable except at the panel hinge portion.
Because it meshes with the sprocket of the panel lifting drive system,
The chain does not escape from the sprocket, and the mutual engagement is always smooth and reliable. As a result, the opening and closing drive of the panel can be performed smoothly and reliably at all times.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the overdoor opening and closing device of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic side view of a main part of an overdoor opening and closing device according to an embodiment of the present invention, FIG. 2 is a partial rear view of FIG. 1, and FIG.
FIG. 4 is an enlarged exploded perspective view of the portion, and FIG. 4 is a plan view of FIG. 1, and the same or corresponding portions as in FIGS. 5 and 6 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. In the figure, 11, 12
Is a chain bracket (hereinafter simply referred to as a bracket) integrally provided in the vertical direction on both sides of the back surface of the panel 2.

The brackets 11 and 12 are attached to the panel 2
, Each of which has upper U-shaped hinge pieces 11a, 12a and lower H-piece pieces 11b, 12b.

The upper hinge pieces 11a and 12a and the lower hinge pieces 11b and 12b are connected to the brackets 11 and 1 respectively.
2 are formed integrally at the upper and lower ends of both side walls, and have pin holes 11c and 12c, respectively.

Then, for example, lower end hinge pieces 11 of both side brackets 11 of the upper panel 2 in FIG. 2 and FIG.
b and the upper hinge pieces 12a of the both side brackets 12 of the lower panel 2 are fitted and aligned, and the pin holes 11c,
Long pin 13 having guide roller 14 for 12c
The long pin 13 at the time of insertion also connects the chain 15 of the panel elevating drive system.

The chain 15 is fitted and stretched in brackets 11 and 12 on both sides of each panel 2 and meshes with a sprocket 16 (see FIGS. 1 and 4) of a panel lifting drive system. In this case, it is composed of a combination of a push-pull chain 151 having a special configuration and a standard chain 152 having a normal configuration.

Here, the chain 15 will be described in more detail. The push-pull chain 151 is configured so that it can be bent and rotated only in one direction from the extended state of the chain, and does not bend in the other direction. That is, the push-pull chain 151 in the illustrated example is the inner chain link 1
One long side of each of the outer chain link 151b and the outer chain link 151b is formed in a flat surface, and the inward stopper piece 151 is formed on the flat long side of the outer chain link 151b.
c is bent, and when the chain is extended, the flat long side of the inner chain link 151a is
1c. Therefore, as described above, the push-pull chain 151 can be bent and rotated only in one direction from the chain extended state, and cannot be bent and rotated in the other direction from the chain extended state.

The push-pull chain 151
Is inserted into the brackets 11 and 12 with the bending direction side facing the inner bottom surface side of the brackets 11 and 12 in the extended state, whereby the push-pull chain 151 has the link side portion on the bending direction side in the extended state. Are brought into contact with the inner bottom surfaces of the brackets 11 and 12.

In the standard chain 152 connected to the push-pull chain 151, one link pin insertion hole 152a has pin holes 11c in the upper hinge pieces 11a, 12a and lower hinge pieces 11b, 12b of the brackets 11, 12. , 12c and the pin holes 11c, 1c.
2c and the upper hinge pieces 11a and 12a and the lower hinge pieces 11b and 1b via the link pin insertion holes 152a.
2b and the standard chain 152 are connected by the long pin 13.

Accordingly, the upper end hinge pieces 11a, 12
a pin 13 between the lower end hinge pieces 11b and 12b
Is a hinge part between the panels 2, and in this hinge part, the chain 15 connected by the long pins 13 is only a part of the standard chain 152 located at the hinge part, which is a panel mutual connection part. It is bendable and rotatable, and cannot be bent at other parts of the push-pull chain 151.

As described above, the chain 15 cannot be bent except for the hinges between the panels, and the sprocket 16
Therefore, the chain 15 does not escape from the sprocket 16 and comes off, and the mutual engagement is performed smoothly and reliably, and the opening and closing operation of the overdoor is also performed smoothly and reliably at all times.

In FIG. 4, reference numeral 17 denotes a motor for driving the panel elevating drive system sprocket 16 in the forward and reverse directions, reference numeral 18 denotes an output sprocket of the motor 17, and reference numeral 19 denotes a rotary shaft of the panel elevating drive system sprocket 16. The input sprocket 20 is a transmission chain wound and engaged with the output sprocket 18 and the input sprocket 19.

In the above embodiment, the case where the side of the push-pull chain 151 on the bending direction side is brought into contact with the bottom surfaces of the brackets 11 and 12 so as to be unable to be bent has been described. A chain link other than the part connected by the long pin 13 may be welded to the bottom surfaces of the brackets 11 and 12 using a chain.

[0021]

As described above, according to the overdoor opening / closing device of the present invention, a chain linking a plurality of upper and lower panels for opening and closing between the left and right guide rails in series on both sides is provided. In addition, there is an effect that the elongation phenomenon and fatigue hardly occur as compared with the conventional wire, the durability can be greatly improved, and the panels can be always held without gaps. In addition, the chain as a panel connecting member can be bent and rotated only at the panel hinge portion which is a connecting portion between the panels, and cannot be bent and rotated at portions other than the panel hinge portion, and meshes with the sprocket of the panel lifting drive system. As a result, the chain does not escape from the sprocket and comes off, and there is an effect that the mutual engagement can always be performed smoothly and reliably. As a result, the opening and closing drive of the panel can be performed smoothly and reliably at all times.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a main part of an overdoor opening and closing device according to an embodiment of the present invention.

FIG. 2 is a partial rear view of FIG.

FIG. 3 is an enlarged exploded perspective view of a part A in FIG. 2;

FIG. 4 is a plan view of FIG. 1;

FIG. 5 is a schematic front view showing a conventional overdoor opening and closing device.

FIG. 6 is a side view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Panel 15 Panel elevating drive chain 16 Panel elevating drive sprocket

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E06B 9/02 E05D 15/38

Claims (1)

(57) [Scope of request for utility model registration] 1. An over-door opening and closing device for opening and closing a pair of left and right guide rails by a plurality of panels in a vertical direction, the upper and lower portions of each panel being connected to each other so as to bend and rotate freely. A series of panel elevating drive system chains are connected on each of the left and right sides along each side of each panel, and the panel elevating drive system chain is bendable and rotatable only at the panel connection portion, and the other portions are not bendable and rotatable. An over-door opening and closing device, which is engaged with a sprocket of a panel lifting drive system.