JP3273166B2 - Balancing device for architectural shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the balance of an architectural shutter to be installed in an opening of a building or a house.

[0002]

2. Description of the Related Art In general,
As the shutter curtain of this type of architectural shutter is unwound from the winding drum, the weight of the unrolled portion increases, thereby further rotating the winding drum and acting in the direction of unwinding the shutter curtain. And it becomes virtually impossible to wind up and open the shutter curtain. In order to cope with this, a balance elasticity machine is provided between the winding drum and the spindle so that the shutter curtain is retracted in the direction in which the shutter curtain is wound so that the rotation force of the winding drum is increased. I try to balance it. However, in this case, when the shutter curtain is wound, when it is almost fully opened, the winding inertia of the winding drum may work, so that the seat plate at the lowermost end of the shutter curtain hits the lintel impactfully. There is a problem that. Therefore, between the support shaft and the take-up drum, a shock-absorbing machine for buffering the impact when the shutter curtain is fully opened is gradually provided as the shutter curtain is wound up to the fully opened state from the middle stage of winding up, and further provided. I have. As a result, with respect to the change in the rotational force of the take-up drum, the change in the accumulated force of the balance and shock absorbers changes as shown in FIG. In other words, during the period from the fully closed state to the middle stage of accumulating the shock absorber, the accumulating force of only the balance armature acts, and this corresponds to the change in the rotational force of the winding drum. Until the state, the energy stored in the shock absorber will work to offset the energy stored in the balanced weapon, and the overall energy stored in the armature will bend in the middle stage. It will have a linear change with points. On the other hand, the change in the rotational force of the winding drum is curved and does not correspond to the linear change in the storage force of the armature. However, operability was still a problem.

Therefore, an attempt is made to make the structure shown in FIGS. In this embodiment, reference numeral 1 denotes a shutter curtain of an architectural shutter. The shutter curtain 1 is wound around a winding drum 3 provided in a shutter case 2 and is guided up and down by guide rails provided on the left and right of the opening. It is supposed to be.

The take-up drum 3 is rotatably supported by a fixed support shaft 4 which is integrally fixed to a case bracket 2a disposed on the left and right sides of the shutter case 2. Between the take-up drum 3 and the fixed support shaft 4, a balance ammunition 5 and a cushioning ammunition 6 are interposed. The balance elastic machine 5 has one end fixed to the take-up drum 3 and the other end fixed to the fixed support shaft 4, and is charged as the take-up drum 3 rotates in the direction in which the shutter curtain 1 is fed out. 3 is urged in the curtain winding direction. On the other hand, the buffering ammunition 6 has one end fixed to the winding drum 3 but the other end is a free end,
Here, a locking hook 6a is formed. The fixed support shaft 4 is formed with a protrusion 4 a penetrating between the coil wires of the shock absorber 6. In the fully opened state, the projections 4a are appropriately positioned between the coil wires, and as the winding drum 3 rotates to wind the shutter curtain 1, the projections 4a advance between the coil wires toward the locking hook 6a. Then, when the shutter curtain 1 reaches a predetermined half-open position A in the middle, the projection 4a is locked by the locking hook 6a, and thereafter, the winding drum 3 rotates to the side where the shutter curtain 1 is fully opened. As a result, the shock bomb 6 is set to be charged.

[0005] The balance armature 5 is composed of a first balance armature 7 and a second balance armature 8,
One end of the first balancing machine 7 is fixed to the winding drum 3, the other end of the second balancing machine 8 is fixed to the fixed support shaft 4, and the other end of the first balancing machine 7 is One end of the balance elastic machine 8 is integrally fixed to a frame 9 which is rotatably supported on the fixed support shaft 4 by a tightening tool 12. Further, an operating pin 10 is provided on the frame body 9 so as to protrude toward the outer diameter direction. The tip of the operating pin 10 is movably provided in a guide groove 3 a provided on the inner peripheral surface of the winding drum 3. It is loose fit. The guide groove 3a is provided with a locking pin 11 for locking the operation pin 10, and the position where the operation pin 10 contacts and locks the locking pin 11 is set as follows. .

That is, when the shutter curtain 1 is in the fully closed state, the operating pin 10 and the locking pin 11 do not come into contact with each other, and the first and second balance elastic machines 7, 8 are uniformly charged. Here, when the take-up drum 3 rotates to raise the shutter curtain 1, based on this, the first and second balance elastic machines 7, 8 cause the take-up drum 3 to take up the shutter curtain 1 by the accumulated force. However, at this time, the operating pin 10 provided on the frame 9 is moved with respect to the winding drum 3 as the torsion of the first and second balance elastic machines 7, 8 is restored. To rotate relatively to approach the locking pin 11. The operating pin 10 is set to abut on the locking pin 11 at a half-open position B below the half-open position A, and the operating pin 10 is abutted and locked on the locking pin 11 here. Then, the restoration of torsion of the first balance armature 7 whose one end is fixed to the winding drum 3 is restricted, and thereafter, the winding drum 3 is urged only by the accumulating force of the second balance armature 8. become.

On the other hand, when the shutter curtain 1 is fully opened, the second balance armature 8 urges the winding drum 3 in the winding direction, while the cushioning armature 6 urges the winding drum 3 in the canceling direction. However, when the winding drum 3 rotates to lower the shutter curtain 1, the second balance armature 8 is charged while urging the winding drum 3 in the winding direction. Is restored while urging in the rewind direction. Then, when the half-open position A is reached, the buffering ammunition 6 is disengaged from the projection 4a, and thereafter only the second balance ammunition 8 urges the winding drum 3, but when it further descends and reaches the half-opening position B, When the restoring force is restricted, the energy of the first balance armature 7 and the energy of the second balance armature 8 are equal to each other, so that the operating pin 10 is locked in the descending range beyond the half-open position B. The first and second balance elastic machines 7 and 8 are separated from the pin 11 and are charged while urging the winding drum 3 in the winding direction.

In this configuration, the take-up drum 3 around which the shutter curtain 1 is wound has the first and second balance machines 7, 8 in the range from the fully closed position to the half-open position B.
In the range from the half-open position B to the half-open position A, it is urged only to the second balance ammunition 8, and in the range from the half-open position A to the fully open position, the second balance ammunition 8 and the shock-absorbing machine that cancels the same. 6 will be energized. That is, for example, during winding, in the range from the fully-closed position to the half-opened position B, the first and second balanced elastic machines 7, 8 connected in series each time the winding drum 3 makes one rotation. The torsion is restored by half a turn (the first and second balance ammunition 7,
8 is the same), the urging force gradually decreases with a gentle inclination as shown in FIG. 6, but in the range from the half-open position B to the half-open position A, the urging force is changed every time the winding drum 3 makes one rotation. Since the torsion of the two-balanced ammunition 8 is restored one rotation at a time, the urging force decreases with a steep inclination. Further, in the range from the half-open position A to the fully-opened position, the urging force of the second balanced ammunition 8 is reduced. Is offset by the shock bomb 6, so that the overall biasing force decreases more rapidly. As a result, the overall urging force is as close as possible to the rotational force of the winding drum 3, which is switched and adjusted in three steps in the open / close range and changes in a curve, that is, the load of the feeding portion of the shutter curtain 1. Become.

That is, in this apparatus, while the urging force of the balance elastic machine 5 and the rotational force of the winding drum 3 generated by the load of the feeding portion of the shutter curtain 1 are balanced, the balance elastic machine 5 is of the first type. And the second balance armatures 7, 8 are connected in series, and in the range from the fully closed position to the half-open position B, the winding drum 3 is biased by the first and second balance armatures 7, 8. On the other hand, in the range from the half-open position B to the half-open position A, the winding drum 3 is urged only by the second balance arm 8 by the locking of the first balance arm 7 by the contact between the operating pin 10 and the locking pin 11. Accordingly, the overall urging force is approximated as much as possible to the change in the rotational force of the winding drum 3 that changes in a curved manner. In comparison with the related art, particularly in the range from the fully closed position to the half open position B, Urging Will be obtained approximates the change in the rotational force change. Therefore, an ideal balance state is obtained in the vicinity of the fully closed position, that is, in the range pushed up at the time of the opening operation. As a result, the opening operation force is reduced, and the operability at the time of the opening operation can be improved. However, in this case, after the first balance machine 7 is locked, the winding drum 3
The side receives the urging force of the second balance armature 8 in addition to the urging force of the first balance armature 7 when the first balance armature 7 is locked. As a result, a large urging force acts on the winding drum 3, and it is necessary to increase the strength. In addition, the strength of the shaft support (bearing portion) between the winding drum 3 and the fixed support shaft 4 is also increased. Considerations were required, and there were issues to be solved here.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made with the object of providing an architectural shutter balance adjusting device capable of eliminating these drawbacks. Rotatably supported on fixed support shaft
One end is wound around the take-up drum of the shutter curtain
While the other end is connected to a fixed support shaft.
Equipped with a balanced weapon that is stored in the
Winding based on the shutter curtain feeding section by the urging force
For architectural shutters that offset the rotating power of the take-up drum
In the middle part of the balance armature, projecting in the outer diameter direction
While providing a locking member for the shutter curtain.
Abuts the locking member within the specified opening / closing range to bias the balance
A stopper member for switching and adjusting the force is fixed to the fixed support.
This is a balance adjustment device for architectural shutters, which is integrally protruded from a shaft .

The present invention makes it possible to make the biasing force of the balance elastic machine in the vicinity of the fully closed position as close as possible to the change in the rotational force of the winding drum exerted by the shutter curtain feeding portion. This makes it possible to generalize the winding drum while reducing the operating force required when opening the shutter.

[0012]

Next, an embodiment of the present invention will be described with reference to FIGS.
Description will be made based on the drawing described in FIG. In this, the same as those described in FIGS.
Will be described with the same drawer code, so
Details are omitted except for those described. So
In this case, the first balancing machine 7 is attached to the fixed support shaft 4.
While one end is fixed, one end of the second balance
A locking pin 12 that is supported by the take-up drum 3 and that corresponds to a stopper member is integrally provided on the fixed support shaft 4. Further, an operating pin 14 corresponding to a locking member is provided on a frame 13 provided between the first balance ammunition 7 and the second balance ammunition 8, and a shutter curtain is provided in the same manner as described above. In the fully opened state of FIG. 1, the second balance armature 8 urges the winding drum 3 in the winding direction, while the buffering armature 6 urges the same in the canceling direction. When the take-up drum 3 is rotated to rotate it, the second balance armature 8 is charged while urging the take-up drum 3 in the take-up direction, and the buffering machine 6 is moved to the take-up drum 3
Is restored while urging in the rewind direction. Then, when the half-open position A is reached, the buffering ammunition 6 is disengaged from the projection 4a, and thereafter only the second balance ammunition 8 urges the winding drum 3, but when it further descends and reaches the half-opening position B, The storage force of the first balance armature 7 whose restoration is regulated is equal to the storage force of the second balance armature 8, whereby the half-open position B
In the descending range exceeding, the operating pin 14 is separated from the locking pin 12 so that the first and second balance elastic machines 7, 8 are charged while urging the winding drum 3 in the winding direction. Is set. Also in this case, the winding drum 3 is urged by the first and second balance elastic machines 7 and 8 in the range from the fully closed position to the half open position B, while the operating pin is urged in the range from the half open position B to the half open position A. The winding drum 3 is urged only by the second balancing machine 8 by the locking of the first balancing machine 7 due to the contact of the locking pin 14 with the locking pin 12, so that the overall biasing force is curved. As close as possible to the changing rotation force of the winding drum 3, it becomes an ideal balance state in the vicinity of the fully closed position, greatly reducing the opening operation force and dramatically increasing the operability during the opening operation. In this case, since the locking pin 12 is provided on the fixed support shaft 4 which is strong in strength, the locking pin 12 is provided on the winding drum 3 side as described above. The strength of the winding drum 3 Tsu necessary especially not to measure the flop, there is an advantage that would be directly adopted as a generic. In this embodiment, the piece 1
Since the locking pawls 13a for locking the bullets 7 and 8 are formed in 3, the mounting work of the bullets 7 and 8 is advantageously simplified.

It should be noted that the present invention is not limited to the above-described embodiment.
It is needless to say that the same operation and effect can be obtained even if the first and second balanced armatures 7 and 8 are constituted by a single Is not composed of the same type of ammunition, but is a combination of different types of ammunition having different numbers of turns, effective lengths, cross sections, etc.
May be configured.

[0014]

In summary, since the present invention is constructed as described above, the rotational force of the take-up drum based on the shutter curtain feeding portion is offset by the biasing force of the balance elastic machine built in the take-up drum. While
The biasing force of the balance ammunition is switched and adjusted when the locking member provided at the intermediate portion contacts the locking member provided on the fixed support shaft side at a predetermined opening / closing position. In other words, the setting of the contact position makes it possible to make the biasing force of the balance elastic machine as close as possible to the rotational force of the winding drum that changes in a curved line, so that the biasing force in the vicinity of the fully closed position can be reduced. The difference in rotational force can be reduced as much as possible. Accordingly, the opening to the extent that is pushed up when operating an ideal balance condition, but to reduce the opening operation force becomes possible to improve the operability at the time of opening operation, the
It is subject to the biasing force of the balance bullets machine of the case in the fixed shaft
It is like if you take it on the winding drum
It is not necessary to measure the strength of the take-up drum
Can be adopted.

[Brief description of the drawings]

FIG. 1 is a front view of a conventional architectural shutter.

FIG. 2 is a plan view of the balance adjustment device.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is an explanatory diagram of the operation.

FIG. 6 is a graph showing a comparison between the biasing force and the load of a feeding portion.

FIG. 7 is a graph showing a conventional example.

FIG. 8 is a front view of an essential part showing an architectural shutter embodying the present invention.

FIG. 9 is a side view of the single piece.

FIG. 10 is a cross-sectional view of the single piece.

FIG. 11 is an explanatory diagram of the operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter curtain 3 Winding drum 4 Support shaft 5 Balance ammunition 6 Buffer ammunition 7 First balance ammunition 8 Second balance ammunition 9 Piece 10 Operation pin 11 Lock pin 12 Lock pin 13 Piece 14 Operation pin

Claims (1)

(57) [Claims] 1. A balance drum having one end connected to a take-up drum and the other end connected to a fixed support shaft is mounted on a take-up drum of a shutter curtain rotatably supported on a fixed support shaft. And, in the architectural shutter in which the rotational force of the winding drum based on the shutter curtain feeding portion is offset by the biasing force stored in the balance armature, the intermediate portion of the balance armature protrudes in the outer diameter direction. while providing the locking member, wherein in brought into contact with the locking member in a predetermined opening and closing range of the shutter curtain stopper member for adjusting switching the urging force of the balance bullets machine, integrally to the fixed support shaft
A balance adjustment device for architectural shutters, characterized by being protruded .