JPH0327713B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a curved door separating device for separating two curved doors in an arc shape or approaching each other in an arc along an entrance/exit.

As a conventional drawing device for curved doors of this type, there is a device related to Utility Model Application No. 12992/1987, which was previously proposed by the applicant. This device consists of a plurality of endless rotary moving members wound around two reversing pulleys rotatably attached near both ends of the entrance and exit so that they are approximately parallel to each other and have an arc shape approximating the curved surface of the entrance and exit. One curved door is movably guided by a guide pulley, and one curved door is connected to one side of the rotary members arranged in two substantially parallel rows, and the other curved door is connected to the other end of the same rotary movable member. It is what it is.

In this conventional device, when one curved door is moved, the other curved door also moves, so by providing a drive device only on one of the two curved doors, it is possible to draw the curved doors or move them closer together. However, on the other hand, since the rotary moving member must be guided in a circular arc shape that approximates the curved surface of the entrance/exit, a large number of guide pulleys are required, resulting in an increase in the manufacturing cost of the device. At the same time, noise is generated due to the rotation of many guide pulleys.Furthermore, when used on a curved door with a large radius, the rotationally moving member made of wire etc. is caused by the shaking of the moving member as the curved door itself moves. There is a risk that the door may come off the guide pulley, and the coupling fitting of the curved door fixed to the rotationally moving member becomes an obstacle, making it impossible to prevent the guide pulley from coming off. When the rotational movement member is located between the two, the rotational movement member is partially pulled strongly and the tension becomes uneven, resulting in various drawbacks such as a shortened life span of the rotational movement member.

This invention was made in view of the above circumstances, and aims to eliminate the drawbacks of the conventional device.The invention is characterized by reducing the number of guide pulleys, and moreover, by reducing the number of traction members. There is almost no risk of it coming off the guide pulley, it can be provided with a stopper if necessary, and the durability of the traction member can be improved.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 to 8, two curved doors 1
Connecting fittings 2a, 2a and 2 are provided above a, 1b.
Curved doors 1a, 1b and concentric guide plates 3a, 3b are fixed by b, 2b. and,
The connecting fittings 2 are attached to the arc-shaped door rails 4a and 4b installed above the entrance/exit (not shown) of the building.
Door wheels 5a, 5a and 5b, 5b rotatably fixed to a, 2a and 2b, 2b are guided,
The two curved doors 1a and 1b are movable in an arc shape. Near both ends above the entrance, there are two reversing pulleys 6a and 6b rotatably attached to the building at different heights, and further,
The curved door 1a of these two reversing pulleys 6a, 6b,
There are two rotatable guide pulleys 7a and 7b rotatably attached to a building in the middle of the convex side of 1b. One of the two guide pulleys 7a, 7b is connected to the two reversing pulleys 6b, 6.
It is installed so that the height position is almost the same as that of one reversing pulley 6b of a, and the other guide pulley 7b
The two reversing pulleys 6b and 6a and the two guide pulleys 7a and 7 are also installed so that the height position is almost the same as that of the other reversing pulley 6a.
b is mounted rotatably in the horizontal direction. Furthermore, when a drive source 8 is connected to one of the reversing pulleys 6b as required, it can be driven to rotate. Guide plates 3a, 3 for two curved doors 1a, 1b
Inner protrusions 9a, 9 are provided at the inner end of the convex outer peripheral surface of b.
b, outer protrusions 10a and 10b are provided at the outer end thereof, respectively. Inner protrusion 9a of one guide plate 3a and outer protrusion 10b of the other guide plate 3b
The height position of the guide plate 3a provided with the inner protrusion 9a is
It is approximately at the same height as the reversing pulley 6a on the side. Similarly, the height positions of the outer protrusion 10a of one guide plate 3a and the inner protrusion 9b of the other guide plate 3b are approximately the same height as the reversing pulley 6b on the guide plate 3b side provided with the inner protrusion 9b. . Of the two traction members 11a and 11b, one traction member 11a has one end fixed to an outer protrusion 10a of one guide plate 3a, and a guide located at approximately the same height as this outer protrusion 10a. It is wound around the pulley 7a and the reversing pulley 6b, and the other end is fixed to the inner protrusion 9b along the other guide plate 3b. Similarly, the other traction member 11b is connected to the other guide plate 3.
One end is fixed to the outer protrusion 10b of the outer protrusion 10b, and the other end is wound around the guide pulley 7b and the reversing pulley 6a, which are located at approximately the same height as the outer protrusion 10b. It is fixed to the inner protrusion 9a. And these two reversing pulleys 6
a, 6b and the two guide pulleys 7a, 7b are installed at the traction members 11a, 11b and the guide pulleys 7a, 7b.
7b contacts P1a, P1b and the traction member 11
Contact points P2a, P between a, 11b and guide plates 3a, 3b
Length L1 of traction member 11a, 11b between 2b
a, L1b are always constant regardless of the open/closed positions of the curved doors 1a, 1b, and the traction member 11
Contact point P3b between a, 11b and reversing pulleys 6b, 6a,
P3a, traction members 11a, 11b, and guide plate 3
Traction member 1 between contacts P4b and P4a of b and 3a
The lengths L2a and L2b of the curved doors 1a and 11b are always constant regardless of the open/closed positions of the curved doors 1a and 1b. Reference numeral 12 denotes a stopper provided adjacently to the two reversing pulleys 6a, 6b and guide pulleys 7a, 7b as necessary to prevent the traction members 11a, 11b from falling off.

The operation of the present invention having the above configuration will be explained.

First, the curved door is changed from the closed state shown in Figs. 1 and 2 to the open state shown in Figs. 3 and 4.
A case where two curved doors 1a and 1b are drawn in an arc shape and moved in the opening direction, that is, in the direction of arrow A or B, will be described with reference to FIGS. 5 to 8. First, in the curved door opening/closing device in which the drive source 8 is connected to the reversing pulley 6b, the drive switch is turned on to rotate the reversing pulley 6b. Then,
One end side is fixed to the inner protrusion 9b of the guide plate 3b of the curved door 1b, and the middle part contacts the outer circumferential surface of the guide plate 3b P.
4b and is wound around the reversing pulley 6b and the guide pulley 7a, and the other end is connected to the guide plate 3 of one curved door 1a.
The traction member 11 fixed to the outer protrusion 10a of a
Since a moves in the direction of arrow A (FIG. 5), the curved door 1b is pulled by this and moves in the opening direction of arrow B. Along with this movement, one end side is fixed to the outer protrusion 10b of the curved door 3b, the middle part is wound around the guide pulley 7b and the reversing pulley 6a, and the other end side is in contact with the outer peripheral surface of the guide plate 3a of the curved door 1a at the contact point P4a. Since the other traction member 11b fixed to the inner protrusion 9a of the guide plate 3a moves in the direction of arrow B (Fig. 7), the curved door 1a is pulled in the opening direction of arrow A. Moving. In this way, the two curved doors 1b and 1a both move in the opening direction to open the entrance/exit. Curved door 1 at this time
The movement of a and 1b in the arc-shaped directions of arrows A and B is achieved by the door wheels 5a, 5a rotatably fixed to the connecting fittings 2a, 2a and the door wheels 5b, 5b rotatably fixed to the connecting fittings 2b, 2b. This is done by being guided by arc-shaped door rails 4a and 4b.

In a curved door opening/closing device that does not have a drive source 8, when one of the two curved doors 1a and 1b, for example, the curved door 1b, is manually moved in the direction of arrow B in the opening direction, the same result as described above occurs. The other curved door 1a is also pulled and moved in the direction of arrow A, which is the opening direction, by the traction member 11b, and the entrance is opened.

Operation of connecting the drive source 8 to the other reversing pulley 6a to move the two curved doors 1a and 1b in the direction of arrows A and B in the opening direction, and manually moving the curved door 1a in the direction of arrow A in the opening direction. The operation of moving the door to open the doorway can be easily inferred from the above description, so a description thereof will be omitted.

Next, the two curved doors 1a and 1b are moved toward each other in an arc shape from the open state of the curved door shown in FIGS. 3 and 4 to the closed state shown in FIGS. 1 and 2 in the closing direction. To explain the operation when moving in the directions of arrows C and D, the drive source 8 of the reversing pulley 6b is reversely rotated. Then, the traction member 1
1a is pulled in the direction of arrow C as the reversing pulley 6b rotates (Fig. 6), so the curved door 1a
is pulled by this traction member 11a and moves in the direction of arrow C. As the curved door 1a moves, the curved door 1b is pulled and moved in the direction of arrow D by the traction member 11b, which is pulled in the direction of arrow D (FIG. 8).

In a curved door opening/closing device that does not have a drive source 8, when one curved door 1b is manually moved in the direction of arrow D, which is the closing direction, the other curved door 1a is moved by the traction member 11a in the same manner as described above. is also pulled and moved in the direction of arrow C, which is the closing direction, and the entrance/exit is closed.

Regarding the operation of connecting the drive source 8 to the other reversing pulley 6a to move the two curved doors 1a and 1b in the directions of arrows C and D in the closing direction, and the operation of manually moving the curved door 1a in the closing direction, , can be easily inferred from the above explanation, so the description will be omitted.

In addition, the inner protrusions 9a, 9b and the outer protrusions 10a,
10b need not be provided at the inner and outer ends of the curved doors 1a and 1b, but may be provided closer to the inner side or the outer side. However, in that case, the opening/closing width of the two curved doors 1a, 1b is affected, and the closer the inner protrusions 9a, 9b and the outer protrusions 10a, 10b are inside the curved doors 1a, 1b, the smaller the opening/closing width. Become.

As explained above in the embodiments, according to the present invention, first, in the closed state shown in FIG. It is circumscribed by . In the open state shown in FIG. 6, the inner protrusion 9b and the contact point P4b coincide, so that there is no circumscribing part to the guide plate 3b. On the other hand, the guide plate 3a has the same radius of curvature and the same width as the guide plate 3b. As a result, the traction member 11a, which is circumscribed to the guide plate 3b, is circumscribed by the warping guide plate 3a. The two guide boards 3a and 3b
The sum of the lengths of the traction member 11a circumscribed by the traction member 11a is always constant. Moreover, as mentioned above, the contact P1a,
Length L1a of traction member 11a between P2a, length L2 of traction member 11a between contacts P3b and P4b
Since a is constant, the traction member 11a can always have a constant tension, and the two curved doors 1
The opening and closing operations of a and 1b are performed smoothly and reliably.

The explanation is omitted for the other traction member 11b, but the same is true.

To explain the above explanation in more detail based on FIGS. 9 to 11, when the guide pulley 7a is in the position shown in the figures, the traction member 11a and the curved door 1a
The contact point P2a with the guide plate 3a and the traction member 11
L1a between contact point P1a of guide pulley 7a and guide pulley 7a
is constant when fully open, half-open, and fully closed. However, for example, if the guide pulley 7a is provided at the position 7a' on the curved door side, when the guide pulley 7a is half open (the first
The length between contacts P1a' and P2a' is the same when fully closed (Fig. 0) and when fully closed (Fig. 9), but when fully open (Fig.
The lengths of the contacts P1a' and P2a' in the figure) are different from when fully closed or half open. That is, as the guide plate 3a passes from the position of the contact P2a' when fully closed, the contact P2a' between the guide plate 3a and the traction member 11a moves moment by moment, so that the contact point P2a' between the contact P1a' and P2a' moves as shown in FIG. Considering the length of the traction member 11a, the sum of the length m ₁ of the part circumscribing the guide plate 3a when fully closed and the length m ₂ between P2a' and P1a is the contact point P2a' when fully open. This will be larger than the length between P1a'. Therefore, the guide pulley 7 closes when the traction member 11a is fully opened.
a' and the reversing pulley 6b, and the tension acting on the traction member 11a changes between when it is fully closed and when it is fully opened. A large tension is applied when it is fully closed, and a small tension is applied when it is fully opened, so durability is lost. That will happen. Also, for example, when the guide pulley 7a is further moved to the position 7a'' on the opposite side of the curved door,
The length when fully open and half open is different from the length when fully closed. That is, since the contact point P2a'' between the guide plate 3a and the traction member 11a moves every moment, the contact points P1a'' and P2
Considering the length of the traction member 11a between a″,
Length of the portion circumscribing the guide plate 3a when fully closed
The total length of the length n ₂ between n ₁ and P2a'' and P1a'' changes, and the length between the contacts P2a'' and P1a'' when fully open.
Therefore, a large tension is applied when the traction member 11a is close to fully closed, and a small tension is applied when the traction member 11a is fully opened, resulting in loss of durability.
Near the fully opened position, it becomes easy to come off the guide pulley 7a'' and the reversing pulley 6b.

That is, in the curved door drawing device of the present invention, the contact point P between the traction member 11a and the guide plate 3a
2a, contact point P4 between the traction member 11a and the guide plate 3b
b always exist at the same position. That is, in FIGS. 9 to 11, a straight line k ₁ passing through the contact point P2a at fully closed, half open, and fully open, and a straight line k ₂ passing through the contact point P1a between the traction member 11a and the guide pulley 7a.
are parallel and their interval distance l ₁ is always constant,
Also, the straight line _k3 passing through the contact point P4b and the traction member 11a
The straight line k ₄ passing through the contact point P3b of the reversing pulley 6b is parallel, and the distance l ₂ between them is always constant.

The other traction member 11b is also the same as described above, so a description thereof will be omitted. Also, regarding the length L2a between the contact point P3b of the reversing pulley 6b and the contact point P4b of the guide plate 3b of the curved door 1b, due to the difference in the installation position of the reversing pulley 6b, the curved door 6
Since it changes as b moves, the same thing as above occurs. Therefore, the tension applied to the traction member does not change since the distance traveled by the traction member from one attachment position 10a to the other attachment position 9b is always constant regardless of the open/closed position of the door.

FIGS. 12 to 19 show other embodiments of the present invention, and each figure corresponds to FIGS. 1 to 8 of the aforementioned embodiment, respectively.

The difference from the previous embodiment is that a chain 11a' is partially used for one of the traction members 11a, and the reversing pulley 6b is rotated in the vertical direction. The device of this embodiment is effective when the drive source 8 for rotationally driving the reversing pulley 6b can be installed only in the lateral direction of the reversing pulley 6b due to circumstances near the entrance/exit. In addition, a chain 11a' is used in the part of the traction member 11a that rotates around the reversing pulley 6b connected to the drive source 8,
Since a sprocket is used for the reversing pulley 6b, there is an advantage that slips are completely prevented and power loss of the drive source 8 does not occur. Other operations and effects are similar to those of the previous embodiment.

FIG. 20 and FIG. 21 show guide pulleys 7a and 7b.
It is an example figure when two pieces of each are used.
This embodiment also has similar operations and effects as long as it satisfies the requirements of the first embodiment, but
If this embodiment is effective, curved doors 1a, 1b
This is a case where the radius of the guide pulleys 7a, 7b is large and the guide pulleys 7a, 7b cannot be installed far away from the convex outer peripheral surfaces of the curved doors 1a, 1b. Note that the number of guide pulleys 7a, 7b is not limited as long as the requirements of the first embodiment are satisfied.

As is clear from the above description, according to the present invention, since the number of guide pulleys 7a and 7b only needs to be at least one each, it is possible to reduce the manufacturing cost of the device, and also to reduce the number of guide pulleys 7a and 7b. Since there is no need to provide a pulley, almost no noise is generated by its rotation. Furthermore, curved doors 1a and 1b with large radius
Even when used in a conventional device, since the bending angle of the traction members 11a, 11b wound around the guide pulleys 7a, 7b is larger than that of the conventional device, the traction members 11
a and 11b almost never come off. In addition, even in the unlikely event that the guide pulleys 7a and 7b and the reversing pulleys 6a and 6b come off easily due to special installation conditions, the stoppers 12 can be installed adjacent to the guide pulleys 7a and 7b and the reversing pulleys 6a and 6b.
This can be effectively prevented. Furthermore, since the tension of the traction members 11a, 11b is always constant regardless of the open/closed position of the curved doors 1a, 1b, the durability of the traction members 11a, 11b can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the device according to the invention, and FIG. 1 is a plan view of the main part when the curved door is closed, FIG. 2 is a front view of the main part, and FIG. 3 is a plan view of the main part when the curved door is opened. Figure 4 is a front view of the main parts, Figure 5 is an explanatory diagram of the state of one of the traction members when the curved door is closed, Figure 6 is an explanatory diagram of the same when it is opened, and Figure 7 is an explanatory diagram of the state of the other traction member when the curved door is closed. An explanatory diagram of the state of the traction member, FIG. 8 is an explanatory diagram of the same state when it is released,
9 to 11 are explanatory diagrams showing the relationship between the traction member, the guide pulley, and the reversing pulley, and FIGS. 12 to 2
1 shows another embodiment of the present invention, FIG. 12 is a plan view of the main part when the curved door is closed, FIG. 13 is a front view of the same, and FIG. 14 is a plan view of the main part when the curved door is opened. 15
The figure is a front view of the same, Fig. 16 is an explanatory diagram of the state of one of the traction members when the curved door is closed, Fig. 17 is an explanatory diagram of the state of the curved door when it is opened, and Fig. 18 is an explanatory diagram of the state of the other traction member when the curved door is closed. An explanatory diagram of the state, FIG. 19 is an explanatory diagram when the same is opened, and FIGS. 20 and 21 are explanatory diagrams when two guide pulleys are used in one traction member. 1a, 1b... Curved door, 3a, 3b... Guide plate, 6a, 6b... Reversing pulley, 7a, 7b... Guide pulley, 8... Drive source, 11a, 11b... Traction member, 12... Removal Stop, P1a, P1b...
Contact points between the traction member and the guide pulley, P2a, P2b...
...Contact point between the traction member and one guide plate, P3a, P
3b...Contact point of traction member and reversing pulley, P4a,
P4b...Contact point between the traction member and the other guide plate,
L1a, L1b...P1a, P1b and P2a, P
The length of the traction member between 2b, L2a, L2b...
Length of the traction member between P3a, P3b and P4a, P4b.

Claims (1)

[Scope of Claims] 1. In an opening/closing device for a curved door that opens or closes an entrance by separating two curved doors in an arc shape along the entrance or bringing them close to each other, each of the two curved doors has a rotating mechanism near both ends of the entrance. One of the two reversing pulleys freely attached and these two
A guide pulley is rotatably mounted between two reversing pulleys, and one end of the guide pulley is attached to the upper part of the two curved doors. The traction member is fixed to the guide plate, and the other end is fixed to the outside of the other guide plate. A traction member having one end fixed to an outer side of one of the two guide plates and the other end fixed to an inner side of the other guide plate on a guide pulley different from the guide pulley. A curved surface in which the length between the contact point of the guide pulley and the guide plate of these two traction members and the length between the contact point of the reversing pulley and the guide plate are always constant regardless of the open/closed position of the two curved doors. Door drawing device. 2. The curved door drawing device according to claim 1, wherein the reversing pulley and the guide pulley are provided with a mechanism to prevent the traction member from coming off. 3. The curved door drawing device according to any one of claims 1 to 2, wherein the reversing pulley is vertically mounted. 4. A curved door drawing device according to any one of claims 1 to 2, in which a reversing pulley is installed in a horizontal direction.