JPH03115694A - Electric transverse type blind - Google Patents

Abstract

PURPOSE:To enhance miniaturization and improvement in operability by setting the vertical movement and angle change of a slat to desired states with a single motor. CONSTITUTION:A slat lifting drum 5 is provided on a drum receiver 8 in a head box 1 in such a manner as to be capable of rotating and sliding, and connected to a motor 2 through a spline shaft 4. A fixed screw shaft 15 is spirally fitted to the drum 5, and rudder tape pulleys 16, 20 are rotatably held by shafts 15, 4. Potentiometers 34, 31 for detecting the movement of the drum 5 and the rotation of the pulley 20 are provided. An electromagnetic clutch movable piece 25 is engaged with the pulley 20 to drive the motor 2, and a slat is lifted to and opened and closed in a preliminarily set position through a slat lifting wire 9 and the rudder tape 21. Hence, the number of members is reduced, and blind control between double glasses and multiple simultaneous control can be easily conducted.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electric horizontal blind in which the vertical movement of the slats and the angle change of the slats can be automatically controlled. By making it possible to drive each angle conversion independently with a single motor, it is possible to downsize the device and simplify the mechanism.
The position of the slats is detected by a potentiometer, and the blinds can be automatically set to the set position by remote control, allowing direct operation such as between double-glazed windows or verchion double-glazed windows. (It is designed so that it can be installed and used in difficult places.In particular, the number of component parts of the device is reduced, making it easier to manufacture, and improving operational stability and durability. It is something that

<Prior art and its problems> The inventor of the present application proposed that in a horizontal blind in which the slats are raised and lowered and their angles changed by a single motor, the drive of the drum for raising and lowering the slats is changed to the drive for changing the angle of the slats. We developed an electric horizontal blind that can be operated separately from the rudder tape pulley drive and applied for a patent (see Japanese Patent Application No. 101407/1983). This thing is
The ability to raise and lower the slats and change the angle of the slats can be done independently, making it very convenient for the user, but the device is complex and takes time to manufacture, and requires a lot of work to ensure accurate operation. High precision was required. In other words, there has been a long-awaited development of a blind that has a simpler structure and operates in the same way as the one previously filed.

Means for Solving the Problems> Therefore, in the electric horizontal blind according to the present invention, a spline shaft having a rectangular cross section is connected to a drive motor disposed in a head box via a coupling, and a spline shaft for raising and lowering slats is connected to a drive motor disposed in a head box. A sliding groove with a rectangular cross section that slides on the spline shaft is bored on one end of the slat lifting drum around which the wire is wound, and the spline shaft is inserted into this sliding groove, and the other end of the slat lifting drum is opened. A thread groove is provided on the side, and it is screwed together with the screw shaft installed in the head box, and the screw shaft is loosely inserted into one ladder tape pulley, and the spline shaft is loosely inserted into the other ladder tape pulley. At least the latter ladder tape pulley is rotatably supported by an arbitrary support member, the ladder tape is wound around the ladder tape pulley, and the drum for raising and lowering the slats is driven by the same drive as the ladder tape pulley for changing the slat angle. The rudder tape pulley, through which the screw shaft passes, is rotatably supported by an independent support member, so that the rudder tape pulley can be rotated reliably without being affected by the screw shaft. In addition, the structure is simplified and manufacturing is facilitated.

Embodiment Next, an embodiment of the electric horizontal blind according to the present invention will be described based on the drawings. Reference numeral 1 denotes a head box above the blind, and a guarded DC motor 2 is disposed at one end inside the head box 1. A spline shaft 4 having a rectangular cross section is connected to the guarded DC motor 2 via a coupling 3. The coupling 3 may be a universal joint, 5 is a hollow slat lifting drum, and 6 is a drum carrier fixed to one end of the slat lifting drum 5. The drum carrier 6 is provided with a sliding groove 7 having a rectangular cross section so as to be in sliding contact with the spline shaft 4, and the spline shaft 4 is inserted into the sliding groove 7. That is, when the spline shaft 4 rotates, the drum carrier 6 rotates while being supported by the drum receiver 8, but can freely move left and right. Reference numeral 9 denotes a slat lifting wire whose one end is fixedly wound around the slat lifting drum, and the other end is connected to the bottom (not shown) of the blind via a wire guide roller 10.

A drum moving carrier 12 having a threaded groove 11 is fixed to the other end of the slat lifting drum 5. A screw shaft 15, which is fixed to a screw shaft receiver 13 disposed in the head box 1 by a screw shaft stopper 14, is threadedly engaged with the drum moving carrier 12. Further, a ladder tape pulley 16 is rotatably mounted on the screw shaft 15, and the ladder tape pulley 16 has a plurality of slats (not shown).
A ladder tape 17 for changing the angle of the slats is connected in a ladder shape. Ladder tape pulley 16
can be rotated with respect to the screw shaft 15 by the movement regulating pawl 18, but is prevented from moving in the left-right direction.

Reference numeral 19 denotes a potentiometer resistor arrangement case disposed in the head box 1, which stands up in an L-shape, into which the spline shaft 4 is rotatably inserted. A ladder tape pulley 20 is rotatably mounted on the spline shaft 4. A ladder tape 21 for changing the slat angle, in which a plurality of slats (not shown) are connected in a ladder shape, is wrapped around the ladder tape pulley 20 and fixed with ladder tape fixing screws 22. The ladder tape pulley 20 is rotatably supported by a support member 23 formed at the bottom of the potentiometer resistor arrangement case 19.

Ladder tape boot 92 with spline shaft 4 inserted loosely
0 serves as a clutch drive piece 24. Then, an electromagnetic clutch movable piece 25 is slidably mounted on the spline shaft 4, and has a sliding groove with a rectangular cross section so as to be in sliding contact with the spline shaft 4 with a slight gap between the clutch drive piece 24 and the electromagnetic clutch movable piece 25. There is. That is, the electromagnetic clutch movable piece 25 is simultaneously rotated by the rotation of the spline shaft 4 and is movable in the left-right direction. Then, the clutch driving piece 24 and the electromagnetic clutch movable piece 2
The contact surfaces of No. 5 are each formed to have an uneven surface. Reference numeral 26 denotes a clutch actuation coil, which is mounted on a plate 27 with screws 28 so as to surround the electromagnetic clutch movable piece 25. Also, Ladder Tape Boo! J20
The clutch driving piece 24 side is formed thin so that its outer periphery slides on the inner periphery of the clutch actuating coil 26.

For mounting the clutch actuating coil, one end of the plate 27 is locked to a locking pawl 29 formed on the potentiometer resistor mounting case 19. By attaching the clutch actuating coil 27 in this manner, assembly is facilitated, and
Each member can be placed accurately. A spring 30 urges the electromagnetic clutch movable piece 25 in a direction away from the electromagnetic clutch movable piece 24. When a current flows through the clutch actuation coil 26, the electromagnetic clutch movable piece 25 moves against the spring 30 and presses the clutch drive piece 24.

31 is a potentiometer 4 for detecting the rotational position of the ladder tape pulley 20, and is designed to rotate while sliding with the potentiometer resistor 32 disposed on the L-shaped raised surface of the potentiometer resistor mounting case 19. It is composed of a sliding piece 33 disposed on the side surface of the ladder tape pulley 21.

34 is a linear potentiometer for detecting the moving position of the slat lifting drum 5 disposed in the head box 1, and the lever 35 is fitted with the flange 36 of the drum moving carrier 12. That is, when the drum 5 rotates, since the drum movable carrier 12 and the screw shaft 15 are screwed together, they move left and right according to the screw pitch, and the drum movable carrier 12 has a flange 36 connected to the linear potentiometer 34.
Since the drum movable carrier 12 is fitted with the lever 35, if the drum movable carrier 12 moves, the lever 35 will also move from side to side.

In the figure, 37 is a balanced amplifier printed circuit board, and 38 is a balanced amplifier printed circuit board.
is trans.

<Operation> When a current is passed through the clutch actuating coil 26 of the electromagnetic clutch, the electromagnetic clutch movable piece 25 moves against the spring 30 while slidingly contacting the spline shaft 4 due to the magnetic force of the clutch actuating coil 26. The drive piece 24 is pressed and brought into close contact, and the unevenness of the contact surface meshes with each other so that it looks like a single piece. When the guard DC motor 2 is rotated in this state, the spline shaft 4 rotates and the electromagnetic clutch movable piece 25 rotates at the same time. When the electromagnetic clutch movable piece 25 rotates, the clutch drive piece 24 that is in close contact with the electromagnetic clutch movable piece 25 is rotated. On the other hand, the rudder tape boot 920 is connected to the clutch drive piece 2.
4, so when the clutch drive piece 24 rotates, the ladder tape pulley 20 also rotates. The ladder tape pulley 20 is rotatably supported by a support member 23, and the clutch drive piece 24 side slides on the clutch actuation coil 26, so that it is supported so as to freely rotate. ing.

When the ladder tape pulley 20 rotates, the ladder tape 2
1 is fixed by a ladder tape stopper 22, the ladder tape 21 moves as the ladder tape pulley 20 rotates, and as a result, the slats are opened and closed. In addition, a sliding piece 33 is embedded in the ladder tape pulley 20, and since this is in contact with the potentiometer resistor 32 for the slat, the ladder tape pulley 20
If 0 rotates, a resistance value change corresponding to the rotation can be obtained.

The ladder tape pulley 20 is rotatably supported by a support member 23 and is not in contact with the screw shaft 4, so that it is not directly influenced by the rotation of the screw shaft 4.

Note that the ladder tape pulley 16 on the screw shaft 15 side can freely rotate around the screw shaft 15, and the ladder tape 17 is not fixed to the ladder tape pulley 16, so it is not involved in the opening/closing movement of the slats described above. .

Next, when the current to the clutch actuating coil 26 is cut off, the electromagnetic clutch movable piece 25 returns to its original state due to the action of the spring 30.
The ladder tape pulley 20 stops at that position. In addition,
Since the electromagnetic clutch movable piece 25 is fitted with the spline shaft 4, when the motor 2 rotates, the electromagnetic clutch movable piece 25 also rotates, but the connection with the ladder tape pulley 20 is cut off. .

On the other hand, since the spline shaft 4 is also fitted with the carrier 6 of the drum 5, when the motor 2 rotates,
The drum 5 will also rotate as a result. That is,
A wire 9 for raising and lowering the slat is wound around the drum 5 via a guide roller 10, and the slat is raised and lowered.

Now, since the drum moving carrier 12 is attached to the other end of the drum 5, when the drum 5 rotates, it rotates while moving left and right in accordance with the thread pitch of the screw shaft 15. That is, the slat lifting wire 9 is wound around the drum 5 in a single layer. Further, since the drum movable carrier 12 is fitted to the lever 35 of the linear potentiometer 34 via the collar 36, when the drum movable carrier 12 moves, the lever 35 moves left and right, resulting in movement of the drum movable carrier 12. A change in resistance value can be obtained depending on the amount.

In any case, the resistance value of each potentiometer 31, 34 will change in proportion to the height of the blind and the angle of the slat, so a circuit that gives the resistance value as data from the outside and compares it. If you drive the motor 2 with the output, the motor 2 will stop when the resistance value applied from the outside becomes equal to the resistance value of the potentiometers 31 and 34. As a result, the height of the blind and the slat height will be reduced. This allows you to control the angle.

<Effects of the Invention> As described above, according to the electric horizontal blind according to the present invention, the driving source is a single motor, and the operation can be performed separately from changing the slat angle such as raising and lowering the slats, and the rudder tape pulley Since the rudder tape pulley is supported by an independent support member, the rudder tape pulley can rotate smoothly, and the number of component parts of the device can be reduced, making manufacturing easier and ensuring accurate operation. . By detecting the position with a potentiometer, accurate positioning can be performed, and miniaturization and remote control are easy. It can be installed and used in various places, and it is also easy to control many blinds at the same time.

[Brief explanation of drawings]

The drawings show an embodiment of an electric horizontal blind according to the present invention, and FIG. 1 is a front view of the right half of the head box, and FIG. 2 is a partially cutaway front view of the main parts of the right half of the head box. Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is
The figure is a partially cutaway front view of the main parts of the left half of the headbox. 1... Head box 2... Guard DC motor 3... Coupling 4... Spline shaft 5... Drum 6... Carrier 7... Sliding groove 8... Drum support 9. ... Wire for raising and lowering the slat 0 ... Wire guide roller ... Thread groove 2 ... Carrier for moving the drum 3 ... Screw shaft receiver 4 ... Screw shaft stopper 15 ... Screw shaft 16.20 ... Ladder tape pulley 17.21 ... Ladder tape 18 ... Movement regulating claw 19 ... Potentiometer resistor arrangement case 22 ...
- Rudder tape fixing screw 23... Support member 24... Clutch drive piece 25... Electromagnetic clutch movable piece 26... Clutch actuation coil 27... Clutch actuation coil is installed on plate 28... Screw 29 ... Locking claw 30 ... Spring 31 ... Potentiometer 32 ... Potentiometer resistor 33 ... Sliding piece 34 ... Linear potentiometer 35 ... Lever 36 ... Flange 7 ...・Balanced amplifier printed circuit board 8...Transformer

Claims (1)

[Claims] 1. A spline shaft with a rectangular cross section is connected to a drive motor disposed in a head box via a coupling, and this spline is attached to one end of a drum for lifting and lowering slats around which a wire for lifting and lowering slats is wound. A sliding groove with a rectangular cross section that slides on the shaft is drilled, a spline shaft is inserted into this sliding groove, a threaded groove is screwed into the other end of the slat lifting drum, and it is installed in the head box. In addition, the screw shaft is loosely inserted into one of the rudder tape pulleys, and the spline shaft is loosely inserted into the other rudder tape pulley, and at least the latter rudder tape pulley can be rotated by any support member. The electric horizontal type is characterized in that the rudder tape is wound around the rudder tape pulley, and the drum for raising and lowering the slats can be driven separately from the rudder tape pulley for changing the slat angle. BLIND. 2 A spline shaft with a rectangular cross section is connected to the drive motor installed in the head box via a coupling, and one end of the slat lifting drum around which the slat lifting wire is wound is connected to the spline shaft in sliding contact with the spline shaft. A sliding groove with a rectangular cross section is drilled, a spline shaft is inserted into this sliding groove, a threaded groove is screwed on the other end of the slat lifting drum, and it is screwed into the screw shaft installed in the head box. In addition, a screw shaft is loosely inserted into one of the rudder tape pulleys, a spline shaft is loosely inserted into the other rudder tape pulley, and at least the latter rudder tape pulley is rotatably supported by an arbitrary support member, and the rudder tape At the same time, the drive shaft connected to the motor drives the drum for raising and lowering the slats, and the rotation of the drive shaft is transmitted via an electromagnetic clutch to the ladder tape pulley for changing the slat angle. Electric horizontal blinds that are characterized by: 3 A spline shaft with a rectangular cross section is connected to the drive motor installed in the head box via a coupling, and one end of the drum for lifting and lowering the slats, around which the wire for lifting and lowering the slats is wound, is in sliding contact with the spline shaft. A sliding groove with a rectangular cross section is drilled, a spline shaft is inserted into this sliding groove, a threaded groove is screwed on the other end of the slat lifting drum, and it is screwed into the screw shaft installed in the head box. In addition, a screw shaft is loosely inserted into one of the rudder tape pulleys, a spline shaft is loosely inserted into the other rudder tape pulley, and at least the latter rudder tape pulley is rotatably supported by an arbitrary support member, and the rudder tape is wound around a rudder tape pulley, and one end surface of the rudder tape pulley into which a spline shaft is loosely inserted is used as a clutch drive piece, and a sliding member with a rectangular cross section that slides into contact with the spline shaft with a slight gap between the clutch drive piece and the spline shaft is installed. An electric horizontal blind characterized in that an electromagnetic clutch movable piece having a groove is slidably mounted on a spline shaft, and the electromagnetic clutch movable piece presses a clutch drive piece by means of a clutch actuation coil. 4 A spline shaft with a rectangular cross section is connected to the drive motor installed in the head box via a coupling, and one end of the drum for lifting and lowering the slats, around which the wire for lifting and lowering the slats is wound, is in sliding contact with the spline shaft. A sliding groove with a rectangular cross section is drilled, a spline shaft is inserted into this sliding groove, a threaded groove is screwed on the other end of the slat lifting drum, and it is screwed into the screw shaft installed in the head box. In addition, a screw shaft is loosely inserted into one of the rudder tape pulleys, a spline shaft is loosely inserted into the other rudder tape pulley, and at least the latter rudder tape pulley is rotatably supported by an arbitrary support member, and the rudder tape is wound around a rudder tape pulley, and one end surface of the rudder tape pulley into which a spline shaft is loosely inserted is used as a clutch drive piece, and a sliding groove with a rectangular cross section is formed so that it slides into sliding contact with the spline shaft with a slight gap between the clutch drive piece and the spline shaft. The electromagnetic clutch movable piece with a hole is slidably mounted on the spline shaft, so that the electromagnetic clutch movable piece presses the clutch drive piece by means of a clutch actuation coil, and the rotational position of the rudder tape pulley and the elevation of the slats are adjusted. An electric horizontal blind characterized by having a potentiometer placed inside the head box so that the position of each drum can be detected. 5. The electric horizontal blind according to claim 3 or 4, wherein the contact surface between the clutch drive piece and the clutch movable piece is formed in an uneven shape. 6. The electric horizontal blind according to claim 4, wherein the support member for the ladder tape pulley is provided in a case in which a potentiometer resistor for detecting the rotational position of the ladder tape pulley is provided.