JPH04250287A - Rising and falling device of blind incorporated into sash - Google Patents

Abstract

PURPOSE:To make it possible to slowly lower slats of a blind incorporated into a sash down to the stroke end with simple operation. CONSTITUTION:A slider 13 is provided to the inside of a longitudinal member 3 formed of a sash so that it is capable of moving up and down, and a rising and falling string 8 raising and lowering slats is connected to the slider 13. An interlocking body 32 having a large number of interlocking sections 33 is provided to the inside of the longitudinal member 3, and a lock member 21 and a control lever 22 are mounted to the slider 13 to make it possible to provide the lock member 21 detachably to the interlocking section 33 with the control lever 22. A device to release stop-holding of the slider 13 is provided to the slider 13 to make it possible to move the slider 13 upward with the dead weight of slats 6, and a buffer mechanism to delay a moving velocity upward of the slider 13 is provided to move slowly the slider 13 upward. According to the constitution, the slats 6 of the blind 5 can be slowly lowered down to the stroke end with the dead weight of them by controlling a holding release mechanism.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for raising and lowering the slats of a blind built into a sash such as a glass shoji.

0002

2. Description of the Related Art A device for raising and lowering the slats of a blind built into a sash is known, for example, as shown in Japanese Utility Model Application No. 1-67293. That is, a rod-shaped body is installed in the vertical member constituting the sash, a slider is provided so as to be movable up and down along this rod-shaped body, and a lifting string for raising and lowering the slats of the blind is connected to the slider to move the slider up and down. The slats can be raised and lowered with the slats, and a link that can be engaged with and disengaged from the rod-shaped body and an operating lever that operates the link are attached to the slider, and the slider is stopped and held by operating the operating lever and operating the link. BACKGROUND ART A blind lifting device that can move up and down is known.

0003

[Problem to be Solved by the Invention] With such a blind lifting device, when the operating lever is operated and the link is released from the rod-like body, the slats descend under their own weight and the slider moves upward, but the speed at which the slats descend is Due to the weight of the machine, the speed is high, and it is necessary to keep operating the control lever.
The slider must be moved upward to match the descending speed, which is not only very difficult, but if the slider is moved upward quickly, the weight of the slat becomes a burden on the operator's hands. This is dangerous, and when the slat descends to the end of its stroke, a large collision may occur and damage various parts.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a lifting device for a blind with a built-in sash that can solve the above-mentioned problems.

[Means for Solving the Problems] A slider is provided in a vertical member constituting a sash so as to be movable up and down, a lifting cord for raising and lowering the slat is connected to the slider, and a locking member having a large number of locking portions is provided on the vertical member. A stop body is attached in the vertical direction, a lock member that engages and disengages the lock member, and an operating lever that operates the lock member are attached to the slider, and a mechanism for releasing the stop holding of the slider and a moving speed of the slider are attached. Equipped with a buffer mechanism to slow down the speed.

[Operation] By operating the stop holding release mechanism, the slider is slowly moved upward by the weight of the slat, and the slat can be slowly lowered to the stroke end.

[0005]

[Example of implementation] As shown in Fig. 1, a sash such as a glass shoji is made of an upper horizontal member 1, a lower horizontal member 2, and left and right vertical members 3, 3 in a rectangular frame, and a glass 4 is attached within the frame. A blind 5 is built inside the sash. The blind 5 has a large number of slats 6 that can be turned with a turning string 7, and can be raised and lowered with a lifting string 8, and the turning string 7
is wound around a roller 10 attached to a shaft 9 supported within the upper horizontal member 1, and the shaft 9 is connected via a bevel gear mechanism 11 to a vertical shaft 12 supported within the vertical member 3. 8 is vertical member 3
It is connected to a slider 13 provided vertically slidably therein.

As shown in FIGS. 2 and 3, the slider 13 includes a pulley 20, a lock member 21, an operating lever 22,
A stop holding release mechanism 23 etc. is provided, and its pulley 20
The locking member 21 is supported by a pin 24 on the slider 13 together with the operating lever 22 so as to be able to swing up and down.
5 is fitted into the arc-shaped groove 26 of the lock piece 21, and a knob 27 provided at the base end of the operating lever 22 projects outward from the vertical groove 28 of the vertical frame 3, as shown in FIG.
The lock member 21 includes a lock piece 29 and a claw piece 30,
The vertical shaft 12 is inserted into a long hole 31 formed at the tip of the lock piece 29, and the lock piece 29 is attached to a large number of locking portions 33 of a locking body 32 installed vertically within the vertical member 3. It can be engaged with and disengaged from either one. As shown in FIGS. 2 and 4, the stop holding release mechanism 23 includes a first bevel gear 34 slidably fitted to the vertical shaft 12, a second bevel gear 35 meshing with the first bevel gear 34, and a second bevel gear 35 meshing with the first bevel gear 34. A shaft 37 is fitted into the square hole 36 of the two bevel gears 35 and slidably supported on the slider 13, and the shaft 37 has a square shaft portion 38, a conical portion 39, a large diameter portion 40, and an angle adjustment dial. 41 is provided, the square shaft part 38 of which fits into the square hole 36, and the shaft 37 and the second bevel gear 35
The shaft 37 is pushed to the right by a spring 42 provided between the vertical member 3 and the angle adjustment dial 41 projects outward from the vertical shaft 28 of the vertical member 3.

The lifting string 8 is wound around a pulley 44 of a buffer mechanism, for example, a wheel damper 43, as shown in FIG.
A toothed pulley 44 is attached to a shaft 46 supported by
A plurality of fins 49 are attached radially to a cylindrical body 48 attached through a box 45, and oil is sealed in the box 45. When the pulley 44 rotates in the direction of the arrow in FIG. The viscosity provides rotational resistance to the pulley 44, and when rotating in the opposite direction of the arrow, only the shaft 46 rotates, the fin 49 does not rotate, the pulley 44 rotates smoothly, and the slider 13 moves upward. At this time, the pulley 44 rotates in the direction of the arrow, increasing rotational resistance and applying a braking force to the upward movement of the slider 13.

Next, the operation will be explained. In the state shown in FIG. 2, the lock piece 29 engages with the locking portion 33 to stop and hold the slider 13, thereby stopping and holding the slat 6 at a position corresponding to the position of the slider 13. In this state, the angle adjustment dial 41
When rotated, the second bevel gear 35 rotates on the square shaft 38, and the first
The vertical shaft 12 rotates via the bevel gear 34 and the bevel gear mechanism 11
The shaft 9 is rotated via the shaft 9, and the turning string 7 is wound around the roller 10 and let out, so that the slat 6 can be turned.

When the operating lever 22 is operated downward by the knob 27 from the above-mentioned state, the locking member 21 swings upward via the pin 25 and the groove 26, and the locking piece 29 separates from the locking portion 33 and slides off. 13 can be moved up and down, and by holding the knob 27 and moving the slider 13 up and down, the lifting string 8 is loosened or pulled down, and the slat 6
falls or rises under its own weight. At this time, slider 13
When the lift string 8 moves upward, the pulley 44 is rotated in the direction of the arrow, so the movement of the lift string 8 is regulated by the operation of the oil damper 43 described above, and the descending speed of the slat 6 due to its own weight is reduced. 6 slowly descends, and when the slider 13 moves downward, the pulley 44 rotates in the opposite direction of the arrow, so the pulley 44 of the oil damper 43 rotates smoothly, so the force that moves the slider 13 downward is reduced. The oil damper 43 does not increase the size.

When the angle adjustment dial 41 is pressed from the state shown in FIG.
5, the conical part 39 pushes the claw piece 30 and pushes up the locking member 21, and the claw piece 30 rides on the large diameter part 40 as shown in FIG. 8 and comes into contact with the back surface of the conical part 39. ,
The lock piece 29 is held apart from the locking part 33. In other words, the hold state of the slider 13 is released. As a result, the slats 6 of the blind 5 descend by their own weight to the stroke end, and the descending speed at this time is reduced by the oil damper 43, so that no large impact is generated when the stroke end is reached.

When the control lever 22 is operated downward with the knob 27 from the state shown in FIG. 37 returns to its original position.

FIG. 9 shows a second embodiment, in which pulleys 50 and 51 are provided on the upper and lower sides of the vertical member 3, and a belt 52 wound around the pulleys 50 and 51 is connected to the slider 13. An air cylinder 53 is connected across the material 3 to form a buffer mechanism. The air cylinder 53 has a piston 56 having a piston rod 55 inserted into a cylinder tube 54 to have an extension chamber 57 and a contraction chamber 58, and the extension chamber 57 is opened to the atmosphere by a valve mechanism 59. As shown in FIG. 10, the valve mechanism 59 includes a valve 61 that opens and closes a hole 60 of the cylinder tube 54;
A pipe 63 inserted into the hole 62 of this valve 61 and a spring 64 provided between this pipe 63 and the valve 61.
The spring 64 presses the valve 61 against the hole 60.

As described above, when the slider 13 is moved upward and the slat 6 is lowered, the belt 52 moves in the direction of the arrow, and the piston rod 5 of the air cylinder 53 moves.
5 expands and air is sucked into the expansion chamber 57,
Since the hole 60 is closed by the valve 61, outside air flows into the extension chamber 58 from the pipe 63, so the inflow resistance is large and the extension speed of the air cylinder 53 is slowed down, which slows down the upward speed of the slider 13. The slat 6 slowly descends. Furthermore, when the slider 13 is moved downward and the slat 6 is raised, the belt 52 moves in the opposite direction of the arrow, the piston rod 55 of the air cylinder 53 contracts, and the air in the extension chamber 57 is discharged to the atmosphere. Since the valve 61 is pushed up against the spring 64 and the hole 60 is opened, the air in the expansion chamber 57 is smoothly discharged through the hole 60 and the pipe 63, so that the air cylinder 53 is smoothly contracted. , the force of moving the slider 13 downward does not increase due to the air cylinder 53.

Note that the other operations are the same as those in the previous embodiment as shown in FIGS. 11 and 12, so their explanation will be omitted.

FIGS. 13, 14, and 15 show a third embodiment, in which a mounting plate 70 constituting a locking member is swingably supported on a slider 13 by a pin 71, and this mounting plate 70 serves as a locking piece. A pinion 72 is rotatably supported, the pinion 72 is meshed with rack teeth 74 which are a locking part of a rack rod 73 which is a locking body, and the pinion 72 is connected to a flywheel 76 via a gear group 75. constitute a buffer mechanism,
An operating lever 22 supported on a slider 13 by a pin 24 is connected to a mounting plate 70 by a pin 25 and an arcuate groove 26, and a knob 27 is attached to the operating lever 22. A brake plate 77 is in contact with the outer peripheral surface of the flywheel 76, and the lower part of the brake plate 77 is connected to a projection 78 provided at the lower part of the operating lever 22.
is facing.

Therefore, in the state shown in FIG. 13, the brake plate 7
7 contacts the outer peripheral surface of the flywheel 76 and prevents the flywheel 76 from rotating, so the slider 13 is stopped and held, and the slats 6 of the blind 5 are stopped and held at a position corresponding to the position of the slider 13. By rotating the angle adjustment dial 41 in this state, the slat 6 can be turned as described above. When you operate the operating lever 22 while holding the knob 27, the mounting plate 70 swings and the pinion 72 separates from the rack teeth 74, allowing the slider 13 to freely move up and down. By moving to , the lifting string 8 is loosened or pulled down, and the slat 6 is lifted and lowered.

As shown in FIG. 16, when the shaft 37 is pushed in, the brake plate 77 is pushed up by the conical portion 39 and separated from the outer peripheral surface of the flywheel 76, releasing the stoppage of the slider 13, and the protrusion 78 of the operating lever 22 Since the flywheel 76 is engaged with and held by the back surface of the portion 39 and is in a freely rotating state, the slider 13 moves upward and the slat 6 descends. At this time, the pinion 72 rotates due to the upward movement of the slider 13, which rotates the flywheel 76 via the gear group 75, and the rotational torque for rotating the flywheel 76 is large.
The rotation of the pinion 72 is restricted, the upward movement speed of the slider 13 is slowed down, and the slat 6 is slowly lowered. From the state shown in Figure 16, hold the knob 27 and press the operating lever 22.
When it is rocked, the mounting plate 70 swings, the brake plate 77 swings together with the mounting plate 70, the protrusion 78 is separated from the conical part 39, and the conical part 39 and the large diameter part 40 are moved by the spring 42 as shown in FIG.
Return to position.

FIGS. 17 to 19 show a first modification using the flywheel described above, in which the flywheel 7
A guide rod 81 is provided radially on the shaft 80 of 6, and a friction body 82 is slidably attached to this guide rod 81.
2 faces a friction ring 83 fixed to the mounting plate 70, and when the slider 13 stops or moves slowly, the rotation of the pinion 72 is slow, so the rotation of the flywheel 76 is also slow, and centrifugal force acts on the friction body 82. Since the friction body 82 is small, the friction body 82 separates from the inner circumferential surface of the friction ring 83 as shown in FIG. Since the acting centrifugal force is large, the friction body 82 is pressed against the inner circumferential surface of the friction ring 83 and braking is performed, as shown in FIG. 19.

FIGS. 20 to 23 show a second modification using the flywheel described above, in which the flywheel 7
A ring-shaped magnet 84 is attached to 6, a rotating shaft 86 is rotatably provided in a fixed ring 85 attached to the mounting plate 70, a magnet 87 is attached to this rotating shaft 86 and fixed ring 85,
A knob 88 for rotating the rotating shaft 86 is provided to rotate the rotating shaft 86.
Rotate the fixing ring 85 as shown in FIGS. 22 and 23.
The magnitude of the magnetic force can be adjusted by changing the opposing distance between the magnet 87 of the rotary shaft 86 and the magnet 87 of the rotating shaft 86, and by attaching the fixing ring 85 facing the magnet 84 of the flywheel 72, the magnetic force can be adjusted. by flywheel 72
It is possible to brake the rotation of.

[0020]

Effects of the Invention: The locking member 21 can be held in the release position by the stop holding release mechanism 23, and the moving speed of the slider 13 can be buffered, so the slat 6 can be moved slowly to the stroke end with the operating lever 22 released. Not only can it be lowered, but there is no large impact when it descends to the end of the stroke.

[Brief explanation of the drawing]

FIG. 1 is a front view of a sash with a built-in blind.

FIG. 2 is a longitudinal sectional view showing a first embodiment of the blind lifting device.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is an exploded perspective view of the stop holding release mechanism.

FIG. 5 is an external perspective view of an oil damper portion.

FIG. 6 is a cross-sectional front view of the oil damper.

FIG. 7 is a cross-sectional side view of the oil damper.

FIG. 8 is an explanatory diagram of a state in which the lock member is released from holding.

FIG. 9 is a longitudinal sectional view showing a second embodiment of the blind lifting device.

FIG. 10 is a cross-sectional view of the valve mechanism.

FIG. 11 is an explanatory diagram of a state in which the lock member is held at the detached position.

FIG. 12 is an explanatory diagram of a state in which the lock member is released from holding.

FIG. 13 is a longitudinal sectional view showing a third embodiment of the blind lifting device.

14 is a sectional view taken along line BB in FIG. 13. FIG.

15 is a sectional view taken along line CC in FIG. 13. FIG.

FIG. 16 is an explanatory diagram of a state in which the slider is released from being held still.

FIG. 17 is an exploded perspective view showing a first modified example of braking the rotation of the flywheel.

FIG. 18 is an explanatory diagram of the operation when the flywheel is stopped or rotates at low speed.

FIG. 19 is an explanatory diagram of the operation when the flywheel rotates at high speed.

FIG. 20 is an exploded perspective view showing a second modified example of braking the rotation of the flywheel.

FIG. 21 is a perspective view of the assembled state.

FIG. 22 is an explanatory diagram of the operation when the braking force is weak.

FIG. 23 is an explanatory diagram of the operation when the braking force is strong.

[Explanation of symbols]

3 Vertical members, 5 Blinds, 6 Slats, 7
Turning string, 8 Lifting string, 13 Slider, 21 Lock member, 22 Operation lever, 23 Stop holding release mechanism.

Claims (1)

[Claims] 1. A slider 13 is fitted into the vertical member 3 constituting the sash so as to be movable up and down, and a lifting string 8 for raising and lowering the slats 6 of the blind 5 is connected to the slider 13. A locking body 32 having a locking portion 33 is attached in the vertical direction, and a locking member 21 that can engage and disengage from the locking portion 33 of the locking body 32 is actuated on the slider 13. A built-in sash characterized by being equipped with a stop holding release mechanism 23 that releases the stop holding of the slider 13 by the operating lever 22, the lock member 21 and the locking part 33, and a buffer mechanism that slows down the moving speed of the slider 13. Blind lifting device.