JPH06100039B2 - Vertical moving window balancing 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 vertical window balancing device.

[0002]

2. Description of the Related Art In a vertically moving window balancing device, it is known that the torsional force of a torsion spring is used for balancing with a window shoji, and the adjustment shaft is adjusted in one direction by a ratchet mechanism to adjust the torsional force. There are those which are made to rotate and those which are made to give a braking force to the adjusting shaft by the binding force of a coil-shaped break spring.

[0003]

Among the above-mentioned conventional balancing devices, the one using the ratchet mechanism is convenient for winding and tightening the torsion spring, but it cannot be unwound and the twisting force cannot be adjusted. A brake spring can be used by winding or unwinding the torsion spring, but the braking force of the brake spring is uncertain and the braking force is weakened. The spring is naturally rewound, which makes it unusable, and the twisting and unwinding operations of the torsion spring are not easy and heavy due to the brake spring, and the brake spring is not easy to assemble.

According to the present invention, the balancing force of the vertically moving window balancing means can be adjusted reliably, easily and lightly, and a large braking force can be obtained to maintain the balancing force for a long period of time. In addition, it is an object of the present invention to provide a balancing device which is easy to manufacture and easy to manufacture and assemble.

[0005]

In order to achieve the above object, the present invention provides a balancing means having a torsion spring for suspending the window shoji and a window shoji by connecting the window shoji to the balancing means. A sliding body for guiding vertically along a vertical frame of the frame, and means for adjusting the balance force of the torsion spring incorporated in the slide body, wherein the adjusting means is an adjusting shaft for the balance force of the torsion spring. ,
A braking piece for the adjusting shaft, a cam surface for operating the braking force,
It includes a holding member that holds the braking piece and is constantly given a rotational force in the braking direction.

[0006]

Embodiments of the present invention will be specifically described below with reference to the drawings.

The window shovel (1) moves up and down along the guide groove (3) (FIG. 4) of the vertical frame (2) of the window frame. This window shoji (1)
Is suspended by a balance member (4) (FIG. 1) used as a balance means in a vertical state on a vertical frame (2) and stopped at an arbitrary position.

The balance member (4) extends vertically and its upper end is connected to the vertical frame (2) by a pin (5) (FIG. 1).
A nut (7) rotatably connected to the lower end of the cylinder, and a nut (7) that is vertically movably inserted into the cylinder so that the lower end thereof penetrates the nut (7) in a threaded state. ) Is provided with a spiral rod (8) protruding outward from the lower end and a torsion spring (9) wound around the spiral rod (8) in the cylinder (6). The upper end is fixed to the upper end of the tube (6) (not shown), and the lower end of the torsion spring is fixed to the nut (7). When the spiral rod (8) descends, the nut (7) is rotated to wind and tighten the torsion spring (9), and when the torsion spring (9) is unwound, the nut (7) is reversed to rotate the spiral rod (8). Work to raise (8). When the spiral rod (8) is connected to the shoji (1) and the torsion spring (9) is given a torsional force that balances the shoji (1) at its maximum raised position, the torsion spring (9) becomes The shoji screen can always be hung on top of one another so that the shoji screen stands still at an arbitrary position, and the shoji screen can be moved up and down with a small force.

The sliding body (10) is mainly composed of a substantially rectangular parallelepiped portion (11) and a tubular portion (12) integrally formed with the portion, and guides the vertical frame (2) of the window frame. It is slidably mounted in the groove (3).

The rectangular parallelepiped portion (11) has vertical sliding grooves (13) on both sides thereof, and the sliding grooves are guide grooves (3) of the vertical frame (2).
The slide body (10) is moved up and down along the guide groove (3) by slidably fitting to the flange (14) (Fig. 4) looking into the opening surface of the. The rectangular parallelepiped part (11) has a lateral bearing hole (15) below it.
(Fig. 5), the rotary shaft (16) is rotatably fitted in the bearing hole (15), and the connecting arm (18) is fitted in the connecting hole (17) of the rotary shaft to connect the shaft. The arm (18) and the rotary shaft (16) are connected so as to rotate integrally. The connecting arm (18) is the vertical frame (19) of the shoji (1).
It is fixed by incorporating it from the lower end to the lower frame (20), and the shoji is tilted inward from the vertical position to the horizontal position about the rotation axis (16) as the center of rotation. Due to the tilt, the shoji (1)
The outer surface of the glass (21) can be safely and easily cleaned indoors.

The tubular portion (12) has a bearing hole (22) penetrating in the vertical direction and an enlarged hole (23) (FIG. 5) connected to the bearing hole. An adjusting shaft (24) used as adjusting means for the torsion spring (9) is rotatably inserted,
The shaft portion (25) at the upper end thereof projects upward from the tubular portion (12), and a part of the shaft portion (26) at the lower end thereof projects below the tubular portion (12). The adjusting shaft (24) is the bearing hole (22) of the tubular part (12).
The shaft part (27) fitted to the shaft part (25) and the shaft part (25) at the upper end have the same diameter, and the shaft part (26) below the bearing hole (22) has the same diameter.
2) and the shaft (27) are formed to have a larger diameter (Fig. 5). The adjusting shaft (24) is inserted into the bearing hole (22) from below and corresponds to the position of the upper edge (28) of the bearing hole (22).
The adjustment ring (30) is fitted into the annular groove (29) of (24) to prevent downward movement of the adjustment shaft (24) and to prevent upward movement of the adjustment shaft (described later). (24) can only be rotated. The adjusting shaft (24) has a groove (31) at its upper end, and this groove (31)
The lower end of the hook (32) is inserted into the hook (32) to connect the stop pin (33) to each other through the hole (34) of the hook (32) and the hole (35) of the adjusting shaft (24). The hook (32) is connected to the spiral rod (8) by a pin (36) and a pin (37). As a result, the adjusting shaft (24) is hung on the spiral rod (8) and the sliding body (10) is hung, and the sliding body (10) passes through the rotary shaft (16) and the connecting arm (18). The shoji (1) is supported by (1) and is suspended by a balance member (4).

The adjusting means for adjusting the torsional force of the torsion spring (9) of the balance member (4) includes, in addition to the adjusting shaft (24), a braking piece (38) for applying a braking force to the adjusting shaft, and the braking piece. It has a cam surface (39) that presses against the adjusting shaft, and a holding member (40) that holds the braking piece and moves the braking piece in the braking direction and the releasing direction. The braking piece (38) is a cylindrical roller and has an adjusting shaft.
Two pieces are arranged at equal intervals so as to surround the (24). Two cam surfaces (39) are formed at equal intervals on the inner peripheral surface of the enlarged hole (23) of the sliding body (10) so as to correspond to the braking piece (38). The cam surface (39) is formed in an arc shape whose radius increases as it goes in the circumferential direction. The holding member (40) is a tubular portion (41)
The tubular portion (41) is fitted in the enlarged portion (26) of the adjustment shaft (24) and the enlarged hole (23) of the sliding body (10). The upper end of the cylindrical part (41) engages with the step (42) of the bearing hole (22) and the lower end engages with the flange (43) of the adjusting shaft (24) to move the adjusting shaft upward. Is being blocked. The cylindrical part (41) has a through hole (4
4), and the braking piece (38) of a cylindrical roller is inserted in this hole. The holding member (40) has a lever (45) extending from the tubular portion (41) in the radial direction, and the lever (45) has two stoppers (46) on the bottom surface of the sliding body (10), It is swung between (47). When the lever (45) is in contact with the stopper (47), the braking piece (38) is in the neutral state by taking the deepest position of the cam surface (39) and cannot be pressed against the adjustment shaft (24). The adjustment shaft is in the non-braking state. When the lever (45) is rotated in the direction of the arrow (A) until it abuts against another stopper (46), the braking piece (38)
Is pushed by the cam surface (39) and gives a braking force to the adjusting shaft (24).
The spiral spring (49) is fitted into the tubular portion (41) of the holding member (40), one end of which is hooked to the holding member side, and the other end of which is hooked to the sliding body side, so that the holding member ( The rotational force in the braking direction is constantly applied to 40) and the braking state of the adjusting shaft (24) is maintained.

The adjusting shaft (24) has a slot (50) in its lower end surface, and the blade tip of a driver is inserted into this slot and rotated. The rotation of the adjusting shaft (24) causes the braking force on the shaft to revolve.
It is made in the released state by the operation of (45) (direction of arrow A), and if the adjusting shaft (24) is rotated in the direction of arrow (A), the torsional force of the torsion spring increases and it is rotated in the clockwise direction. Torsion force is reduced. The unwinding of the torsion spring (9) can be performed only by releasing the braking force on the adjusting shaft (24).
In this way, the torsional force of the torsion spring (9) is adjusted to properly balance the shoji.

The shoji (1) is provided with a locking means on the upper frame (51) thereof, and the locking of the means prevents the shoji from rotating around the rotary shaft (16), and the unlocking causes the shoji to rotate. Tolerate.
The locking member (52) as the locking means comprises a case (53) and a locking rod (54) slidably inserted in the case, and the locking rod (54) is arranged in the locking direction. It is constantly biased by a spring (not shown). The lock rod (54) has a distal end surface formed in an arc shape and further has a knob (55). The tip end surface of the lock rod (54) fits into the cylinder (6) and moves up and down together with the shoji (1) using the cylinder as a guide surface. The lock rod (54) is sandwiched between the vertical frames of the window frame to prevent the shoji (1) from tilting. When the lock rod (54) is retracted to the retracted position with the knob (55), the lock rod (54) moves outward from the position where it is engaged with the vertical frame (2) of the window frame, and is in the unlocked state. Allow the tilting of (1).

[0015]

According to the present invention, as means for adjusting the torsional force of the torsion spring (9) that balances with the window shoji, the braking piece (38) is pressed by the cam surface (39) on the adjusting shaft (24) for rotating the torsion spring. A braking force can be applied or the pressing of the braking piece can be released by the cam surface, the braking piece is held by the holding member (40), and a rotational force in the braking direction is constantly applied to the holding member to put it in a braking state, Since it is configured to release the braking by reversing it, it is possible to adjust the balance force of the balancing means for the vertically moving window reliably and easily and lightly, and to obtain a large braking force. The resultant force can be maintained for a long period of time, and the structure is simple and the manufacturing and assembling are easy.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a balancing device of the present invention is attached to a window.

FIG. 2 is a front view of the balancing device of the present invention.

FIG. 3 is a right side view of the balancing device.

FIG. 4 is a bottom view of the balance device.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 1 Shoji 4 Balancing member 6 Cylinder 7 Nut 8 Spiral rod 9 Torsion spring 10 Sliding body 16 Rotating shaft 18 Connecting arm 22 Bearing hole 24 Adjusting shaft 32 Hook 38 Braking piece 39 Cam surface 40 Holding member 49 Winding spring

Claims (7)

[Claims] 1. A balancing means having a torsion spring that balances the window shoji to make the window shovel stand still at an arbitrary position, and the window shoji is connected to the balancing means so that the window shoji extends along a vertical frame of the window frame. And a means for adjusting the balance force of the torsion spring which is incorporated in the sliding body and which guides up and down.
A shaft that adjusts the balance force by twisting a torsion spring, a braking piece that brakes the adjustment shaft to maintain the balance force, and presses the braking piece against the adjustment shaft for braking by rotating in both directions and braking from the adjustment shaft. A balancing device for a vertical moving window having a cam surface that is released for release and a holding member that holds the braking piece and is constantly given a rotational force in the braking direction. 2. The adjusting shaft is rotatably inserted in a longitudinal bearing hole of a sliding body, the cam surface is formed in the bearing hole, and the braking piece is inserted between the adjusting shaft and the cam surface. And a lever that is held by a hole of a cylindrical holding member that is rotatably fitted to the adjustment shaft, and that is provided with a lever that rotates the holding member in the releasing direction. Further, the holding member is always attached in the braking direction. 2. The vertical window balancing device according to claim 1, including a biasing spring. 3. The vertical window balancing device according to claim 2, wherein a plurality of the braking pieces are arranged so as to surround the adjustment shaft, and a plurality of the cam surfaces are provided so as to correspond to the respective braking pieces. 4. The cam surface of the bearing hole of the sliding body is formed in an arc shape whose radius increases as it advances in the circumferential direction.
Balancing device for vertical moving window described 5. The cylinder further fixed to the vertical frame of the window frame and surrounding the torsion spring and fixed to the upper end of the spring, and the lower end of the torsion spring rotatably connected to the cylinder. And a screw rod that is vertically movably inserted into the torsion spring, is screwed into the nut and is equally screwed, and is integrally rotatably connected to the adjusting shaft. 5. The vertical window balancing device according to claim 4, wherein the torsion spring is wound and tightened via a nut when it is lowered, and is lifted through the nut when the torsion spring is unwound. 6. The balancing device for a vertical moving window according to claim 1, wherein the braking piece is formed in a cylindrical roller shape. 7. The connection between the spiral rod and the adjusting shaft is made by engagement between a hook connected to the adjusting shaft and a pin connected to the spiral rod. A balancing device for the vertical moving window described in.