JPH0222470Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a power-storage actuation balancer useful for a return drive mechanism of an eave shutter.

For example, a storm door device called an eave shutter is a hanging type and folding type storm door device used to protect openings such as windows in buildings. A storm door is formed by four water-resistant panels that are hinged to each other vertically, and is suspended from the exterior wall above the building opening, and each panel is pulled up and folded and stored above the opening. In the open position, the shutters protrude like eaves.

However, in such a shutter device that opens and closes the eaves shutter, it is necessary to drive the eaves shutter at two points, the middle part and the lower end, to raise and lower it, which complicates the structure. There is a need for a balancer with two sets of return spring drives without the need for a balancer.

The present invention has been made in response to the above-mentioned demand, and the purpose of the present invention is to provide a balancer with a simple structure.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

The shutter device equipped with the balancer of the example is as follows:
As shown in FIGS. 1 to 3, four frames attached to the outer wall around the window opening 1a of the building 1, that is, the upper frame 2, the lower frame 3, and the left and right side frames 4, are used as skeleton bodies, A shutter 5 is installed close to the front of the skeleton, and a sliding glass door 6 is installed over the window opening 1a.

Therefore, the shutter 5 consists of four upper and lower water-resistant panels of equal vertical width, that is, an upper atsupa panel 7A,
It is formed of an upper lower panel 7B, a lower upper panel 8A, and a lower lower panel 8B, and each panel is foldably connected by a hinge 9A on the front side and hinges 9B and 9C on the back side.

Further, at the lower ends of each of the upper and lower panel pairs 7A, 7B and 8A, 8B, that is, at the lower ends of the panel 7B and the lower end of the panel 8B, ear shafts 10 projecting laterally are provided. A sliding roller 11 is supported on each ear shaft 10, and each of these rollers 11 is inserted into a groove in each of the left and right guide rails 12 that are fixed to the facing surface of the side frame 4 and run vertically. , are guided.

Further, the upper end of the uppermost upper panel 7A is pivotally attached to the lower surface of the upper frame 2 near the front end by a hinge 13, so that the shutter 5 is suspended from the upper frame 2, and the intermediate height and bottom part are It is held by the guide rail 12 at two locations.

In addition, although not shown in FIG. 2, a cushioning sealing material 14 is installed at the tip of the bracket 4a, which projects forward from the inner end of the rear surface of the side frame 4, and extends through the entire length. The side edge of the shutter 5 is sealed waterproof with the same sealing material 14, and
It functions to absorb the rearward deviation of the lower panel pair 8A, 8B.

Next, a pair of balancers 15A, 15B of the embodiment is installed at each left and right end of the inner space of the box-shaped upper frame 2, and both balancers 15A, 15B are formed symmetrically. Hereinafter, the formation mode of one balancer 15A will be explained with reference to FIGS. 4 to 6a.

Partition plates 20a, 20b, and 20c for bearings are erected between the left and right ends and the middle of the case 20, and the first output shaft 21 and the second output shaft pass through each of the partition plates 20a to 20c. The shafts 22 are mounted in parallel, and equal-shaped wire drums 23A and 23B are respectively attached and fixed to the output shafts 21 and 22 between the partition plates 20a and 20c.
Also, the first output shaft 2 between the two partition plates 20c and 20b
In one portion, a first output reel 24A is pivotally attached and fixed, and a second floating reel 25B is loosely fitted and pivotally supported.

On the other hand, a second output reel 24B and a first idle reel are disposed on the second output shaft 22 between the partition plates 20c and 20b at positions facing the second idle reel 25B and the first output reel 24A, respectively. 25A is
They are each pivoted and supported in the same manner as above.

Here, the first floating reel 25A supported by the second output shaft 22 is simply supported by the output shaft 22 and rotates freely, and has no relation to the output shaft 22 in terms of operation. First floating reel 25A
is operated in cooperation with the first output reel 24A whose axial position is opposite, and similarly, the second floating reel 25B which is pivotally supported by the first output shaft 21 is operated in cooperation with the second output reel 24A whose axial position is opposite. It cooperates with the output reel 24B.

On the other hand, a hanging wire 1 is provided around the drum circumference of the wire drum 23A that rotates integrally with the first output reel 24A.
The wire 16 passes through one pulley of a double pulley 27 supported on the bottom plate of the case 20, and passes through the hole 20d of the bottom plate downward. It is attached to the ear shaft 10 of the lower panel 8B, and similarly, the second output reel 24B
The base end of a suspension wire 17 is fixed to the drum periphery of the wire drum 23B, which rotates together with the wire drum 23B.The wire 17 passes through the other pulley of the double pulley 27, and the lower end thereof ear axis 1
It is tied to 0.

By the way, the inner end of the first band spring 26A formed into a coil shape that is wound clockwise in FIG. 6 on the reel surface of the first floating reel 25A in a free state is fixed to the reel surface with a screw 28. The band spring 26A pulled out from the reel 25A is wound counterclockwise onto the first output reel 24A against its elasticity, and its inner end is fixed to the reel surface with a screw 29. ing.

However, in the illustrated position, since most of the first band spring 26A is wound around the output reel 24A, the spring 26A is in a strongly stored state, and the first output shaft 21 is not connected to the output reel 24A. A clockwise torque stress is generated, which causes the bottom panel 8B to
is strongly traction-biased.

Similarly, the second output shaft 22 is subjected to torque stress based on the stored elasticity of the second band spring 26B, which is stretched across the second output reel 24B and the second floating reel 25B. occurs, and as a result, the upper lower panel 7B is strongly pulled and biased.

Here, the operation of the balancers 15A and 15B of the embodiment configured as described above will be described.

In the closed position of the shutter 5 shown in FIGS. 1 to 6a, the hanging wires 16 and 17 on the left and right sides of the shutter 5 are connected to each other.
Although a strong traction force is applied due to the storage activation of both balancers 15A and 15B, the bottom panel 8
Since the shutter B is locked to the guide rail 12 by a locking means (not shown), the shutter 5 is held in an extended state.

By the way, when the locking means is released in order to open the shutter 5, the upper panel pair 7A, 7B
and the lower panel pair are pulled up by the respective suspension wires 16 and 17 and moved up, but as shown by the chain lines in FIG. Therefore, after that, only the lower panel pair 8A and 8B rose, and 3
The opening movement ends at a position where the panels 7B, 8A, and 8B overlap horizontally, and at this time, the upper upper panel 7A forms an eaves.

In such an open position, each band spring 2 is
6A, 26B are wound onto the respective floating reels 25A, 25B while reducing the amount of stored energy. For example, in the case of the first band spring 26A, as shown in FIG. Most of the spring 26A is wound up on the floating reel 25A, and only a small amount of energy remains in the spring 26A, that is, the spring 26A has returned to a state close to a free state.

Next, in order to close the shutter 5, the lowermost panel 8B may be pulled down against the elasticity of the band springs 26A, 26B; in this case, each band spring 26
A and 26B are the respective output reels 24A and 24B.
It gets caught up in and is stored up.

In addition, in the case of the shutter device equipped with the balancers 15A and 15B of the embodiment, the upper panel pair 7A and 7B
and the lower panel pair 8A, 8B are operated and driven independently, so when there is strong sunlight or rain, the second output shaft 22 is fully turned off as shown in Figure 7a. operation, the first output shaft 21 is semi-operated,
It is possible to half-open the shutter 5, or, as shown in FIG. 7b, it is possible to half-operate only the first output shaft 21 so that the shutter 5 is half-opened with the eaves lowered.

As described above, according to the balancer of the present invention, the output reel and the idle reel are pivoted and supported in a staggered manner on two output shafts mounted adjacently and parallel to each other. In addition, since the band spring is wound in a reverse manner between the reels, a two-axis balancer with an extremely compact structure and energy storage start-up is obtained, which has the advantage of being widely applicable to various return mechanisms. .

[Brief explanation of the drawing]

FIG. 1 is a front view of a shutter equipped with a balancer according to the embodiment, and FIGS. 2 and 3 are - of FIG. 1.
Each cross-sectional view at the line and - line, FIG.
A plan view of a balancer showing an embodiment of the present invention, FIG. 5 is a side view of the same, and FIG.
6b is the operating view of FIG. 6a, and FIGS. 7a and 7b are the operating views of FIG. 2, respectively. 21, 22...first and second output shafts, 24A,
24B...first and second output reels, 25A, 2
5B...first and second floating reels, 26A, 26
B...First and second band springs.

Claims (1)

[Claims for Utility Model Registration] A first torque output shaft 21 and a second torque output shaft 2 installed parallel to each other and adjacent to each other in the case 20.
2, a first output reel 24A that is rotatably mounted on the outer periphery of the first torque output shaft 21, and a first output reel 24A on the outer periphery of the second torque output shaft 22 in the axial direction; a second output reel 24B that is fixed and shaft-mounted at the location where it is inserted, and a second output reel 24B on the outer periphery of the first torque output shaft 21;
A second floating reel 25B rotatably supported at a location opposite to the output reel 24B, and the second
a first floating reel 25A rotatably supported on the outer periphery of the torque output shaft 22 at a location facing the first output reel 24A; and a winding bias in the direction of the first floating reel 25A. In this state, the direction of the first band spring 26A made of a spiral spring whose both ends are wound and fixed in an S-shape between the first floating reel 25A and the first output reel 24A, and the second floating reel 25B. A second band spring 26B made of a spiral spring whose both ends are wound and fixed in an S-shape between the second floating reel 25B and the second output reel 24B in a state where it is wound and energized.
A balancer capable of starting from energy storage, characterized by comprising the following.