JPH0354307Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) This invention relates to a slat drive mechanism for raising and lowering and adjusting the angle of the slats of a blind inside a frame, such as a blind built into a double glass sash. It is.

(Prior art) As a type of blind, multiple tiers of slats are supported via ladder cords from a headbox placed inside the upper stile of a double glass sash, and a lift cord hanging from one side of the headbox is operated. There are devices in which the angle of the slat is adjusted by raising and lowering the slat, and by manipulating an angle adjustment cord hanging from one side of the headbox, the angle adjustment shaft within the headbox is rotationally driven. This kind of blind has a stopper mechanism that prevents the lifting cord from moving when the lifting cord is not operated and prevents the slat from falling due to its own weight, and a transmission mechanism that transmits the driving force of the angle adjustment cord to the angle adjustment shaft on one side of the head box. Both mechanisms were separately attached to the headbox.

(Problems to be solved by the invention) In the conventional blinds as described above, the stopper mechanism for preventing the slats from falling due to their own weight and the transmission mechanism for transmitting the driving force of the angle adjustment cord to the angle adjustment shaft are located at one end of the head box. Since the head box was attached separately to the window, the assembly work was complicated, and this became a problem especially for blinds with a compact head box, such as blinds built into double-glazed sashes. Furthermore, in order to stably support the vicinity of both ends of the slat, which has a length approximately equal to the width of the glass surface of the double glass sash, the length of the head box must be at least equal to or longer than the length of the slat. The transmission mechanism will be located within the stiles of the double glazed sash. Therefore, when the stopper mechanism and the transmission mechanism are disposed laterally within the stile, there is a problem in that the width of the stile increases.

Structure of the invention (Means for solving the problems) In order to solve the above problems, this invention provides lifting cords 8a, 8b at one end of the head box 10 disposed inside the upper frame 3 of the glass sashes 1a, 1b. Lifting cord 8 due to the weight of slat 4 when not in operation
A stopper mechanism 36 that prevents the movement of the slats 4 and 8b from falling due to their own weight, and a transmission mechanism 41 that transmits the driving force of the angle adjustment cord 15 to the angle adjustment shaft 11 are provided. and the transmission mechanism 41 is connected to the glass sash 1.
The slats 4 are raised and lowered by operating the lifting cords 8a and 8b, which are located inside the vertical stile 5 of the slats a and 1b, and which are suspended from the stopper mechanism 36. In a blind that adjusts the angle of the slat 4 by rotationally driving the angle adjustment shaft 11 in the head box 10, the stopper mechanism 36 and the transmission mechanism 41 are housed in one case, and the drive device 14
A stopper mechanism 36 is provided below the transmission mechanism 41 within the drive device 14, and a mounting means for attaching the drive device 14 is provided at one end of the head box 10.

(Function) When the drive device 14 is attached to the head box 10 by the above means, the attachment of the stopper mechanism 36 and the transmission mechanism 41 to the head box 10 is completed.
1 is always arranged in the vertical direction.

(Embodiment) An embodiment embodying this invention will be described below with reference to the drawings. The double glass sash 1 shown in FIG. 2 has a pair of sashes 1a and 1b configured as sliding doors, Blinds 2 are built in between the double-glazed windows 1a and 1b, respectively. The blind 2 has multiple tiers of slats 4 suspended and supported from a head box (described later) arranged inside the upper stile 3 of each sash 1a, 1b, and each slat 4 is installed on a vertical stile 5 outside of the sash 1a, 1b. The angle can be adjusted by operating the operating knob 7 in the handle 6, and the bottom rail 9 can be raised and lowered by operating the lifting cords 8a and 8b exposed from the vertical stile 5 which is opened on the side. , each slat 4 can be raised and lowered.

Next, the blind 2 will be explained with respect to the sash 1a. As shown in FIG. is supported by Ladder cord support devices 12 are disposed in the headbox 10 near both ends of the headbox 10,
The angle adjustment shaft 11 passes through a ladder cord winding shaft (not shown) in the support device 12 and rotates together with the winding shaft.

The ladder cord 13, which supports the slats 4 in multiple stages vertically, has its upper end supported by the winding shaft. When the angle adjustment shaft 11 is rotated in the forward and reverse directions, the angle of each slat 4 can be adjusted within a range of approximately 90 degrees in the forward and reverse directions from the horizontal state via the winding shaft and the ladder cord 13. It's becoming like that.

A drive device 14 is attached to one end of the head box 10 for raising and lowering the slats 4 and adjusting the angle thereof.By operating an angle adjustment cord 15 hanging from the drive device 14, the angle adjustment shaft 11 is rotated and the slats are moved. 4, the angle can be adjusted. Further, the two lifting cords 8a and 8b for lifting and lowering the slat 4 have one end connected to the bottom rail 9.
It is guided upward within the vertical stile 5 by a guide roller 16 fixed to one end and rotatably supported at the lower end of the vertical stile 5, and also guided to the headbox 10 by the drive device 14, and one lifting cord 8a is connected to the headbox 10. It is guided downward to the head box 10 by a guide roller 17 at one end, passes through one end of each slat 4, and the other end is connected and fixed to the bottom rail 9. 10 is guided downward, passes through the other end of each slat 4, and the other end is connected and fixed to the bottom rail 9. By operating lifting cords 8a and 8b exposed on the sides of the vertical stile 5 upward or downward, the bottom rail 9 can be raised or lowered and the slat 4 can be raised or lowered. In addition, the lifting cords 8a and 8b
is divided into upper and lower parts between the drive device 14 and the guide roller 16, and is connected by a connector 19, so that the length of the lifting cords 8a, 8b can be adjusted at this portion.

Next, the drive device 14 and its mounting structure will be explained with reference to FIGS. 3 to 6. As shown in FIG. Protrusions 20 and 21 for supporting the upper end of the ladder cord support device 12 are provided facing each other on the upper edges of both front and rear sides, and the protrusions 20 and 21 are spaced a predetermined distance from one end of the head box 10. Locking recesses 22 and 23 are formed at the positions. head box 1
A cutout 24 for avoiding the drive device 14 is provided on the bottom surface of one end of the 0, and a pair of locking holes 2 for attaching the drive device 14 are provided in the depths of the cutout 24.
5 and 26 are provided.

The drive device 14 has a pair of upper mounting pieces 27 and 28 protruding from the upper part of one side thereof.
Locking protrusions 29 and 30 are respectively projected upward from the tips of 28. And both locking protrusions 29,
30 is the distance between the locking recesses 2 of the head box 10.
Since the spacing is the same as that between the protrusions 20 and 23, it is slightly larger than the spacing between the protrusions 20 and 21.

A pair of lower attachment pieces 31 and 32 protrude below the upper attachment pieces 27 and 28, and locking protrusions 33 and 34 are protruded downward from their tips, respectively. The distance between the locking protrusions 33 and 34 is the same as the distance between the locking holes 25 and 26 of the head box 10.

The drive device 14 and the head box 10 configured in this way are mounted on the upper mounting piece 2 of the drive device 14 while pushing both sides of the head box 10 outward.
7, 28 to the protrusions 20, 21 of head box 10
Insert between the locking protrusions 3 of the lower mounting pieces 31 and 32
3, 34 into the locking holes 25, 26, and at the same time, the locking protrusions 29, 30 of the upper mounting pieces 27, 28 are engaged.
When the drive device 14 is engaged with the locking recesses 22 and 23, the drive device 14 is supported and fixed to the head box 10.

A fixed roller 35 is rotatably supported in the center of the drive device 14, and a movable roller 36 is disposed below the fixed roller 35. This movable roller 36 has unevenness 37 formed on its circumferential surface to prevent slipping, and the unevenness 37 is formed on the driving device 1.
Sawtooth-shaped guide slope 38 provided on the inner slope of 4
It is designed to move up and down while rotating when engaged with. A support rod 39 is provided at the lower end opening of the drive device 14.
is fixed so as to divide the opening into two, front and back.
This prevents the movable roller 36 from falling off from the opening.

For the drive device 14 configured in this way, the lifting cords 8a, 8 guided upward along the vertical stile 5
b is from the lower end opening of the drive device 14 to the left side of the movable roller 36 and the fixed roller 3
One lifting cord 8a is immediately guided below the headbox 10 by the guide roller 17 as described above, and the other lifting cord 8b is directed toward the other guide roller 18 of the headbox 10. being guided. Then, when the lifting cords 8a and 8b exposed on the sides of the vertical stile 5 are operated downward, the movable roller 36 is lowered to the lowest position supported by the support rod 39 as shown in FIG. , the lifting cords 8a and 8b shown by solid lines can be freely moved downward, and if you let go of the lifting cords 8a and 8b, the lifting cords 8 will move due to the weight of the bottom rail 9 and the slat 4.
a, 8b are drawn into the drive device 14 from below in the state shown by chain lines in the same figure, so that the movable roller 36
moves up while rotating along the guide slope 38, and as shown in FIG.
A lifting cord 8a between the inner surface 40 facing the
8b is clamped and fixed to prevent its movement.

A drive pulley 41 for rotationally driving the angle adjustment shaft 11 is rotatably supported above the drive device 14, that is, above the fixed roller 35, and the angle adjustment shaft 11 is fitted into one end of the drive pulley 41. The drive pulley 41 rotates integrally with the drive pulley 41. The angle adjustment cord 15 is wound around the outer periphery of the drive pulley 41, and both ends of the angle adjustment cord 15 are suspended toward the front side of the drive device 14 as shown in FIGS. 1 and 5. There is.

As shown in FIG. 1, the lifting cords 8a and 8b, which are vertically conducted inside the vertical stile 5 which is opened to the side, are connected to a cord guide 42 at the vertical center of the vertical stile 5.
are guided by. The structure of the code guide 42 will be explained with reference to FIGS. 7 and 8. The code guide 42 is formed by bending a long steel plate, and its center part is attached to the vertical frame 5 with a screw 43. It is fixed, and its lower part projects obliquely downward, and its tip 44 is bent inward in an arc shape near the side edge of the vertical stile 5. And the lifting cord 8a,
8b is elastically supported by its tip 44 in the vicinity of the cord guide 42 and in the vicinity of the side edge of the vertical stile 5.

A support shaft 45 on which the angle adjustment cord 15 is hung is provided at the upper part of the cord guide 42 . The angle adjustment cord 15 hanging from the drive device 14 has an endless shape, and its lower end is connected to the support shaft 45.
It is movably hung. Angle adjustment cord 1
5, a ball chain 46 is connected to a part thereof as shown in FIG. The ball chain 46 is formed by connecting balls 46a with wires 46b, and is usually located on the back side of the handle 6 of the vertical stile 5.

An elongated hole 47 is provided in the center of the handle 6 in the vertical direction, and an operating portion 48 having the operating knob 7 provided at its tip is movable along the elongated hole 47. As shown in FIG. 9, a U-shaped transmission section 49 is integrally formed at the base end of the operating member 48, and the transmission section 49 has an engagement through which only the wire 46b of the ball chain 46 can be inserted. A stop groove 50 is formed. Then, as shown in FIG. 8, the locking groove 5
When the wire 46b of the ball chain 46 is inserted through the wire 46b of the ball chain 46, the balls 46a engage with each other at the top and bottom of the transmission part 49, allowing the transmission part 49 and the ball chain 46 to move up and down together. When the exposed operation knob 7 is moved up and down, the angle adjustment cord 15 is moved via the transmission section 49 and the ball chain 46, and the angle adjustment shaft 11 is rotated via the drive pulley 41. There is. Further, when the operating knob 7 is located at the center of the elongated hole 47, the slat 4 is held in the horizontal direction,
By moving the operating knob 7 upward or downward from the center along the elongated hole 47, the angle of the slat 4 can be adjusted in a range of 90 degrees forward or backward from the horizontal direction. Note that the protruding piece 51 extending vertically from the operating knob 7 prevents the elongated hole 47 from being exposed even when the operating knob 7 is moved up or down, so as not to spoil the aesthetic appearance of the sash 1a.

As shown in FIG. 10, the bottom rail 9 is formed in the shape of a groove that opens upward. A holder 52 for connecting the lower end of the ladder cord 13 to the bottom rail 9 is formed of synthetic resin into a plate shape having a width that can cover the opening of the bottom rail 9, and the ladder cord 13 is attached to the center of both sides of the holder 52. An insertion groove 53 for insertion is provided. Further, a locking protrusion 54 having an arrowhead-shaped cross section that can be elastically fitted to both sides of the opening of the bottom rail 9 is formed on the lower surface of the holder 52. It is divided into two parts.

Then, attach the lower end of the ladder cord 13 to the holder 5.
The holder 52 is inserted into the insertion groove 53 of No.2.
When the locking protrusion 54 is fitted into the opening of the bottom rail 9, the ladder cord 13 is inserted as shown in FIG.
The lower end is connected and fixed to the bottom rail 9 by a holder 52.

Next, the operation of the blind 2 configured as described above will be explained.

Now, assemble this blind 2 and use Satsushi 1a.
When installing the drive device 14 to one end of the head box 10,
Attach the upper mounting pieces 27 and 28 of the drive device 14 to the head box 1 while pushing outward both the front and rear sides of the drive unit 14.
Insert between the protrusions 20 and 21 of 0. Then, at the same time as the locking protrusions 33 and 34 of the lower mounting pieces 31 and 32 are engaged with the locking holes 25 and 26, the upper mounting piece 2
The locking protrusions 29 and 30 of 7 and 28 are connected to the locking recess 22,
23, the locking protrusions 29, 30 will engage the locking recesses 22, 23 due to the elasticity of the head box 10.
Since the drive device 14 is stably held within the head box 10, the drive device 14 is supported and fixed in the head box 10.

Therefore, the drive device 14 can be attached to the head box 10 very easily without requiring any tools.

Also, connect the bottom end of the ladder cord 13 to the bottom rail 9.
To connect the ladder cord 13 to the bottom rail, wrap the lower end of the ladder cord 13 around the bottom surface of the holder 52, insert the weft and warp threads into the insertion groove 53 of the holder 52, and in this state, connect the locking protrusion 54 of the holder 52 to the bottom rail. When the ladder cord 13 is fitted into the opening 9, the lower end of the ladder cord 13 is connected and fixed to the bottom rail 9 by the holder 52, as shown in FIG. Therefore, the connection between the ladder cord 13 and the bottom rail 9 is achieved through the insertion groove 5.
Holder 5 with the lower end of ladder cord 13 inserted through 3
2 to the bottom rail 9 using its elasticity, the ladder cord 13 can be connected to the bottom rail 9 extremely easily without the need for tools.

The blind 2 attached to the sash 1a can raise and lower each slat 4 by raising and lowering the bottom rail 9 by operating the lifting cords 8a and 8b exposed on the sides of the vertical stile 5. That is, as shown in FIG. 3, the movable roller 3 is always
If the lifting cords 8a and 8b, which have been prevented from moving in the downward direction of the slat 4 by 6, are pulled downward, the movable roller 36 will move downward along the guide slope 38 as shown in FIG. Lifting cords 8a and 8b in a state of being pulled diagonally to the side as shown by solid lines
can be freely pulled out from the drive device 14 by the operator's operating force or pulled into the drive device 14 by the weight of the bottom rail 9 and slat 4, and the bottom rail 9 can be raised or lowered. After raising and lowering the slat 4 to a desired position by raising and lowering the bottom rail 9, when the lifting cords 8a and 8b are let go, the weight of the bottom rail 9 and the slat 4 causes the lifting cords 8a and 8b shown in chain lines in FIG. is about to be drawn into the drive device 14 from inside the stile 5. Then, the movable roller 36 is moved upward while rotating along the guide slope 38, and as shown in FIG. do. Therefore, after raising and lowering the slat 4 to the desired position, the lifting cords 8a, 8
If you let go of b, the lifting cords 8a, 8b are instantly prevented from moving, so that the slat 4 is suspended and supported at a desired position.

During such a slat lifting/lowering operation, the lifting cords 8a and 8b are elastically supported near the side edges of the vertical stile 5 by the cord guides 42 at the center of the vertical stile 5 in the vertical direction. Therefore, when the lifting cords 8a, 8b are taken out from inside the vertical stile 5 during the lifting/lowering operation of the slat 4, the lifting cords 8a, 8b are exposed near the side edges of the vertical stile 5 near the cord guide 42 and can be easily taken out. , the raising and lowering operation of the slat can be started immediately. In addition, lifting cords 8a, 8b
is elastically supported by the cord guide 42, and even if the sash 1a is closed and the vertical stile 5 comes into contact with the window frame, the cord guide 42 will bend inward, so the lifting cords 8a and 8b may be damaged. do not have.

To adjust the angle of the slats 4 of the blind 2, the operating knob 7 inside the handle 6 can be operated in the vertical direction. That is, the operation knob 7 is inserted into the elongated hole 47.
When the angle adjustment cord 15 is moved along the transmission section 49 and the ball chain 46, the drive pulley 41 is rotated accordingly. Then, the angle adjustment shaft 11 is rotated together with the drive pulley 41, and the winding shaft and ladder cord 13 are rotated together with the drive pulley 41.
The angles of each slat 4 are adjusted in the same phase through the slats 4.

This type of slat angle adjustment device has a long hole 47.
For example, in order to adjust the angle of each slat 4 within a desired angle range when the operating knob 7 is moved within the specified movement stroke range, the operating knob 7 is positioned at the center in the vertical direction. When setting the slat 4 to be held in the horizontal direction, first remove the ball chain 46 from the locking groove 50 of the transmission part 49 and move the angle adjustment cord 15 to hold the slat 4 in the horizontal direction. In this state, the operating knob 7 is moved to the center in the vertical direction to insert the wire 46b portion of the ball chain 46 into the locking groove 50 of the transmission section 49. Therefore, by selecting the engagement position of the transmission portion 49 with respect to the ball chain 46, this angle adjustment device can extremely easily set and change the angle adjustment range of the slat 4 relative to the movement stroke of the operating knob 7. can.

As described above, in this blind 2, the slats 4 can be raised and lowered by operating the lifting cords 8a and 8b exposed on the sides of the vertical stile 5, and each slat 4 can be moved in the same phase by operating the operating knob 7. The angle can be adjusted with. A movable roller 36 as a stopper mechanism for preventing movement of the lifting cords 8a and 8b and a drive pulley 41 as a transmission mechanism for transmitting the driving force of the angle adjustment cord 15 are integrally provided in the drive device 14. So,
When the drive device 14 is attached to the headbox 10, the attachment of the stopper mechanism and the transmission mechanism to the headbox 10 is automatically completed, so the assembly is extremely easy, and both mechanisms can be installed in a small space. .

Further, since the drive pulley 41 is provided on the upper part of the drive device 14 and the movable roller 36 is arranged below the drive pulley 41, even when the drive device 14 is attached to the other end of the head box 10, the drive pulley 41 and the movable roller 36 can be moved. The positional relationship with the roller 36 does not change. Therefore, a locking recess 2 for attaching this drive device 14 to the other end of the head box 10 is provided.
2. If the locking hole 25, the cutout 24, etc. are provided and the drive device 14 is installed, the head box 10 etc. can be installed even when the slat drive means is provided on the right vertical stile 5 as in the sash 1b shown in FIG. By attaching this drive device 14 to the end, that is, the right end in FIG. 1, a device for raising and lowering the slat 4 and adjusting its angle can be constructed. Since the transmission mechanism and the stopper mechanism are located vertically no matter which end of the head box 10 the drive device 14 is attached to, the width dimension of the vertical frame 5 of the double glass sashes 1a and 1b is increased. Not at all.

Effects of the invention As detailed above, this invention includes a stopper mechanism that prevents the lifting cord from moving due to the weight of the slats and prevents the slats from falling due to their own weight when the lifting cord is not operated, and a stopper mechanism that reduces the driving force of the angle adjustment cord to an angle. Since the drive device is configured by housing the transmission mechanism for transmitting data to the adjustment shaft in one case, if the drive device is fixed to the end of the head box with the mounting means, the stopper mechanism and the transmission mechanism can be automatically attached to the head box. In addition, since the transmission mechanism and the stopper mechanism can be located vertically within the vertical stile of the glass sash, an excellent effect is achieved in that the width of the vertical stile can be prevented from increasing.

[Brief explanation of drawings]

Figure 1 is a partially cutaway front view showing an example of a blind embodying this idea, Figure 2 is a front view of a double glass sash embodying this idea, and Figure 3 is a longitudinal sectional view of the drive device. , FIG. 4 is a longitudinal cross-sectional view showing the driving device during lifting and lowering operations, FIG. 5 is a plan view of the driving device, FIG. 6 is a perspective view showing one end of the head box, and FIG. 7 is a vertical stile showing the cord guide. FIG. 8 is a partially cutaway side view of the vertical stile showing the cord guide and operating knob, FIG. 9 is a perspective view showing the transmission part of the operating knob and the ball chain, and FIG. 10 is a diagram showing the lower part of the ladder cord. Perspective view shown, No. 11
The figure is a sectional view showing how the ladder cord is attached to the bottom rail. Glass sash...1a, 1b, blinds...
2. Upper stile...3. Vertical stile...5. Slut...4.
Lifting code...8a, 8b, head box...
10, Angle adjustment shaft...11, Drive device...14,
Angle adjustment cord...15, Movable roller...36,
Drive pulley...41.

Claims (1)

[Claims for Utility Model Registration] A head box 10 is disposed within the upper frame 3 of the glass sashes 1a and 1b, and the head box 10 is
At one end, there is a stopper mechanism 36 that prevents the lifting cords 8a, 8b from moving due to the weight of the slat 4 when the lifting cords 8a, 8b are not operated, thereby preventing the weight of the slat 4 from falling. A transmission mechanism 41 for transmitting the signal to the adjustment shaft 11 is provided, and the stopper mechanism 36 and the transmission mechanism 41 are connected to the vertical frame 5 of the glass sashes 1a and 1b.
By operating the lifting cords 8a and 8b hanging from the stopper mechanism 36, the slat 4 is
In this blind, the stopper mechanism 36 and the transmission mechanism 41 are raised and lowered, and the angle adjustment shaft 11 in the head box 10 is rotationally driven by an angle adjustment cord 15 hanging from the transmission mechanism 41 to adjust the angle of the slat 4. A stopper mechanism 36 is provided below the transmission mechanism 41 in the drive device 14, and the drive device 14 is attached to one end of the head box 10. A slat drive device for a blind built into a glass sash, characterized in that it is provided with a mounting means for the purpose.