JP3263215B2 - Slat transfer device for electric vertical blind - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slat transfer device for an electric vertical blind in which slat transfer and angle adjustment are performed based on the driving force of a motor.

[0002]

2. Description of the Related Art The following has been proposed as one type of conventional electric vertical blinds. That is, in the electric vertical blind described in Japanese Patent Publication No. 52-13337, a DC motor for transferring a slat and a DC motor for adjusting a slat angle are provided in a hanger rail, and each DC motor is provided with a reduction gear. It consists of a geared motor with built-in.

When a slat transfer DC motor is operated, a screw rod is rotated, and the leading runner is transferred within a hanger rail based on the rotation of the screw rod. Then, with the movement of the leading runner, the subsequent runner is transferred.

[0004] In addition, the feed screw is rotated with the operation of the DC motor for transferring the slats, and the rotation-stopped nut is moved along the feed screw with the rotation of the feed screw. Limit switches are respectively provided near both ends of the feed screw, and when the nut contacts one of the limit switches, the operation of the DC motor is stopped. At this time, the leading runner is transferred to the position where each slat is pulled out to the maximum.

When the nut comes into contact with the other limit switch, the operation of the DC motor is stopped. At this time, the leading runner is transferred to a position where each slat is folded.

When the DC motor for adjusting the slat angle is operated, the spline rod is rotated, and the slat suspended and supported by each runner is rotated based on the rotation of the spline rod.

[0007] Further, the feed screw is rotated in accordance with the operation of the DC motor for adjusting the slat angle, and the rotation-stopped nut is moved along the feed screw with the rotation of the feed screw. Limit switches are provided near both ends of the feed screw and in the middle, respectively. Each of the limit switches detects a state in which each slat is turned to a direction along the hanger rail and a state in which each slat is turned in a direction orthogonal to the hanger rail.

[0008]

In the electric vertical blind as described above, since the DC motor for transferring the slat is a geared motor, vibration and noise are large. Also, noise is generated due to the rotation of the spline rod and the feed screw.

Further, two limit switches are required to detect a state where each slat is fully extended and a state where each slat is completely folded. In order to solve such a problem, a three-phase AC linear motor in which the mover moves along the hanger rail is provided on a guide rail arranged in parallel with the hanger rail, and the driving force of the mover of the linear motor is provided. Attempts have been made to realize an electric vertical blind in which the slats are transferred.

By using such a linear motor as a drive source, for example, if a state in which each slat is pulled out to the maximum is detected by a limit switch and the position is set to an origin position, the linear motor is supplied from the origin position. By counting the number of pulses of the control current, the movement position of the slat can be detected with one limit switch.

However, in the above-described linear motor, if the phase of the control current supplied to the mover and the phase of the stator by a large number of magnets disposed in the movable range of the mover are not accurately set at the origin position, the origin is Since the starting of the mover from the position becomes unstable, there is a problem that the mounting work of the limit switch becomes complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric vertical blind using a linear motor as a drive source for slat transfer, a limit switch for detecting an origin position of a linear motor mover, and a positioning of a linear motor stator. The present invention is to provide an electric vertical blind slat transfer device capable of easily performing the above-mentioned steps.

[0013]

According to the present invention, in order to achieve the above object, a large number of runners are movably supported in a hanger rail, and slats are suspended and supported on the respective runners. A linear motor is disposed in a guide rail disposed along the controller, and a control device is provided for controlling the operation of a mover of the linear motor. The leading runner is moved by the mover to pull out and fold the slat. In an electric vertical blind provided with a limit switch for detecting an origin position of the mover at an end of the guide rail, a cap attached to an end of the guide rail includes a cap of the linear motor. A positioning piece for positioning the end of the stator and a mounting piece for attaching the limit switch were formed integrally.

In the limit switch, only the push button portion protrudes from the tip of the mounting piece. The mounting piece is provided above and parallel to the positioning piece.

[0015]

The limit switch for detecting the home position of the mover and the end of the stator are positioned by the mounting piece and the positioning piece formed integrally with the cap, so that the limit switch and the stator are positioned. Is accurate and easy.

Since the mover is received by the mounting piece, the mover does not collide with the limit switch. The limit switch is disposed above the stator, and the origin of the mover is set above the stator.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a large number of runners 2 are movably supported in a hanger rail 1 which is attached to a wall or the like above a window via a guide rail to be described later.
, The slats 3 are respectively suspended and supported.

A tilt case 4 is attached to one end of the hanger rail 1, and a drive device including a stepping motor for adjusting the angle of each slat 3 is provided in the tilt case 4.

A guide rail 5 is attached to the rear of the hanger rail 1 over the entire length of the hanger rail 1, and a drive source for transferring each of the slats 3 along the hanger rail 1 is mounted on the guide rail 5. Is provided.

The guide rail 5 and the guide rail 5
The configuration of the linear motor disposed therein will be described with reference to FIGS. The guide rail 5 includes a hanger frame 6 and a drive rail 13.

A hanger frame 6 is supported on the rear side of the hanger rail 1. That is, a ridge 7 projecting upward is formed on the upper edge of the rear surface of the hanger rail 1, and a ridge 8 projecting downward is formed on the lower edge of the rear surface of the hanger rail 1.

The hanger frame 6 is made of a substantially angled aluminum extruded material, and has concave ridges 9 and 10 formed on both upper and lower edges of its vertical side. The interval between the ridges 9 and 10 is set slightly larger than the distance between the ridges 7 and 8. Then, the hanger rail 1 is inserted from the longitudinal side of the hanger frame 6 so that the protrusions 7 and 8 are engaged with the recesses 9 and 10, so that the hanger frame 1 is rearward of the hanger rail 1. 6 are connected.

A pair of engaging pieces 11 and 12 facing each other are formed at both front and rear edges of the hanger frame 6. The locking pieces 11, 1 of the hanger frame 6
2, a drive rail 13 is suspended and supported. That is, the drive rail 13 is formed of an extruded aluminum material and is formed in a groove shape in which one side of the hanger rail 1 is opened,
On the upper surface of the upper side, a pair of hanging pieces 14 and 15 projecting in a hook shape in the front-rear direction are formed. Both hanging pieces 14, 15
Is set slightly smaller than the distance between the locking pieces 11 and 12. The drive rail 13 is inserted from the longitudinal side of the hanger frame 6 so that the suspension pieces 14 and 15 engage with the locking pieces 11 and 12, respectively. 6 is suspended.

A pair of first holding pieces 16 and 17 projecting in a hook shape are formed on the lower surface of the upper side of the drive rail 13 so as to face each other. A trolley holder 18 is inserted and supported between the first holding pieces 16 and 17,
On the lower surface of the trolley holder 18, three trolleys 19 as power supply lines are supported in parallel along the longitudinal direction of the drive rail 13. The trolley holder 18 is formed of a synthetic resin having electrical insulation, and the trolley 19 is formed of a thin copper plate. The trolley 19
A wiring cord (not shown) for supplying a control current to the trolley 19 is soldered to one end of the trolley 19.

On the upper surface of the lower side of the drive rail 13,
A pair of second holding pieces 20 and 21 projecting in the directions facing each other, and having the tip portions projecting upward.
Are formed.

An elongated plate-shaped yoke 2 is provided between the second holding pieces 20 and 21 and the upper surface of the lower side of the drive rail 13.
2 are inserted, and a large number of disc-shaped magnets 23a and 23b are adhesively fixed on the upper surface of the yoke 22. Then, as shown in FIG. 3, each of the magnets 23a, 23b
Is the S pole magnet 23a and the N pole magnet 23b
Are alternately arranged, and each magnet 23a, 23
b is the second holding piece 20, 21 of the drive rail 13.
Located between. The magnets 23a, 23
b may have a shape other than the disk shape, and an odd number may be arranged alternately.

One end of the yoke 22 is formed with a fitting projection 22a projecting in the longitudinal direction of the yoke 22, and the other end of the yoke 22 is fitted with a fitting recess 22b into which the fitting projection 22a can be fitted. Are formed. Therefore, drive rail 1
When the length of the drive rail 13 is long, the plurality of yokes 22 are connected in series to correspond to the length of the drive rail 13 so that the magnet 2
3a and 23b can be easily provided.

When the yokes 22 are connected in series, the magnets 23a and 23b of the connecting portions are arranged at the same intervals as the adjacent magnets 23a and 23b of the other portions. The yoke 22 is disposed on the yoke 22. In addition, both ends of the yoke 22 are fixed at both ends of the drive rail 13 and are positioned with respect to the drive rail 13.

A mover 24 of a linear motor is movably disposed in the drive rail 13. The mover 24 is formed in a rectangular parallelepiped shape and incorporates a plurality of coils C. Wheels 25 are supported at four corners of the lower surface by support legs 26 so as to be rotatable along the longitudinal direction of the drive rail 13. . A guide groove 27 for guiding the wheel 25 is provided on the front side of the second holding piece 20 of the drive rail 13 and on the rear side of the second holding piece 21 along the longitudinal direction of the drive rail 13. The wheel 25 is formed so as to roll along its guide groove 27.

Therefore, the mover 24 is supported in the drive rail 13 so as to be movable in the longitudinal direction of the drive rail 13. Also, each support leg 2 located in the front-rear direction
6, the distal ends of the second holding pieces 20 and 21 are erected close to the support legs 26, so that the second holding piece 2
The tips of 0 and 21 form guide pieces 20a and 21a for guiding the moving direction of the mover 24.

On the upper surface of the mover 24, six brushes 2
8 are provided, and the tip of each brush 28 is projected upward so as to contact the trolley 19. The trolley 19, the mover 24, and the magnets 23a and 23b
Thus, a linear motor is configured.

On the front surface of the mover 24, a connecting arm 29 whose tip projects downward from the hanger frame 6 is provided.
The base end of the drive arm 30 is attached to the distal end of the connection arm 29. The tip of the drive arm 30 is connected to the leading runner 31. Therefore, as the mover 24 moves, the leading runner 31 moves.
Moves along the hanger rail 1.

The leading runner 31 and each subsequent runner 2 are connected by a known spacer, and the leading runner 31 is moved in the hanger rail 1 in the direction of arrow A in FIG. Each slat 3 is pulled out by the following runner 2 following at regular intervals.

When the leading runner 31 is moved in the hanger rail 1 in the direction of arrow B, the following runners 2 are sequentially pushed back to the leading runner 31 so that each slat 3 is folded.

As shown in FIG. 1, a control device 32 is connected to the tilt case 4 via a wiring cord 33, and an operation switch 34 is connected to the control device 32 via a wiring code 33. The control device 32 controls the operation of the linear motor and the stepping motor based on a preset program by operating the operation switch 34, so that the slat 3 can be pulled out and folded, and the angle of the slat 3 can be adjusted. It has become.

At the other end of the guide rail 5, a limit switch 35 for detecting the mover 24 of the linear motor is provided. When the slat 3 is moved to its maximum withdrawal position, the limit switch 35 detects the movable element 24 abutting on the limit switch 35 and outputs a detection signal to the control device 32.

Next, the mounting structure of the limit switch 35 will be described with reference to FIGS. As shown in FIG. 5, caps 36 are attached to the ends of the hanger rail 1 and the guide rail 5. The cap 36 is formed of a synthetic resin into a plate shape and covers the ends of the hanger rail 1 and the guide rail 5, and is fixed to the guide rail 5 by three tapping screws 37.

A mounting piece 38 protruding into the guide rail 5 is integrally formed on the inner surface of the cap 36, and a mounting shaft 39 protruding upward is formed on the upper surface of the mounting piece 38. Further, a mounting hole 40 is formed in the mounting piece 38 at a position lateral to the mounting shaft 39 so as to penetrate the mounting piece 38.

In the case 41 of the limit switch 35, two through holes 42a and 42b are formed at the same interval as the interval between the mounting shaft 39 and the mounting hole 40.
The mounting shaft 39 is fitted in one of the through holes 42a, and the tip of the mounting shaft 39 is fitted in the other through hole 42b.
The tapping screw 43 screwed into is inserted.

Accordingly, the limit switch 35 is fixed on the mounting piece 38 while being positioned by the mounting shaft 39 and the tapping screw 43. As shown in FIG. 4, the limit switch 35 fixed on the mounting piece 38
Is fixed at a position where the edge of the case 41 is slightly retracted from the tip of the attachment piece 38, and the tip of the push button portion 44 protruding from the case 41 is slightly more than the tip of the attachment piece 38. It is protruding.

The mounting piece 38 is located on the movement locus of the mover 24. Therefore, when the mover 24 is moved to the end of the guide rail 5, the push button portion 44 is pressed by the end surface of the mover 24 until the mover 24 contacts the tip of the mounting piece 38. The limit switch 35 outputs a detection signal to the control device 32 when the push button portion 44 is pressed by the mover 24.

Below the mounting pieces 38, the magnets 23a, 23 bonded and fixed in a row on the yoke 22 are arranged.
A positioning piece 45 for positioning the end of b is integrally formed.

When the ends of the magnets 23a and 23b adhered and fixed in a row on the yoke 22 are in contact with the positioning pieces 45, the yoke 22 is
It is fixed to.

In this state, the tip of the mounting piece 38 is located on the center line of the magnet 23a at the end. Therefore, the edge of the mover 24 moved to a position where it comes into contact with the mounting piece 38 is set to be located on the center line of the magnet 23a at the end.

The control device 32 includes a limit switch 3
5 recognizes that the mover 24 is located at the origin on the basis of the detection signal output from the controller 5, and counts the number of pulses of the three-phase AC signal supplied to the mover 24 from that time, thereby moving the mover 24. Calculate the distance.

When the mover 24 is located at the origin,
The edge of the mover 24 is located on the center line of the magnet 23a at the end, and the control device 32 outputs a control current to the mover 24 located at the origin with a phase corresponding to the positional relationship set in advance. Then, the mover 24 is moved.

Next, the operation of the electric vertical blind configured as described above will be described. By the way, when any one of the operation switches 34 is pressed at the start of the operation after the construction of the electric vertical blind or at the start of the operation after the power failure, the control device 32 supplies a control current to the mover 24. Then, the mover 24 is moved in the direction of arrow A in FIG.

When the mover 24 presses the push button portion 44 of the limit switch 35, the limit switch 35 outputs a detection signal to the control device 32. The control device 32 resets the internal counter based on the detection signal, and recognizes that the mover 24 is located at the origin.

From this state, the controller 32 sets the mover 24
When the mover 24 is moved by supplying a three-phase control current to the controller, the control device 32 counts the number of pulses of the control current and recognizes the position of the mover 24. Therefore, the control device 3
2 always recognizes the position of the leading runner 31 and controls the pulling operation and the folding operation of the slat 3.

When the angle adjustment operation of the slats 3 is set by operating the operation switch 51, the angle of each slat 3 is adjusted by the control device 32 based on a preset program.

In the slat transfer device as described above, a mounting piece 38 is formed integrally with a cap 36 fixed to an end of the guide rail 5, and a limit switch 35 is mounted on the mounting piece 38. When the mover 24 is moved until it comes into contact with the mounting piece 38, the mover 24
As a result, the push button portion 44 of the limit switch 35 is pressed, and the origin position of the mover 24 is detected.

The positioning pieces 45 formed integrally with the cap 36 below the mounting pieces 38 set the ends of the magnets 23a and 23b. Therefore, the mover 2
4 at the origin position and the magnet 23a,
The phase with 23b can be easily managed without error. As a result, the phase of the control current supplied from the control device 32 to the mover 24 and the phases of the magnets 23a and 23b are surely matched, and the mover 24 can be moved smoothly.

The limit switch 35 is attached to the mounting piece 3.
8, it is attached above the magnets 23a and 23b. Therefore, the magnets 23a,
The mover 24 can be operated more smoothly than when a limit switch is provided on an extension in the column direction of 23b.

That is, at the end positions of the magnets 23a and 23b, the magnetic force is reduced and the driving force acting on the mover 24 is reduced.
The limit switch 35 is located above 3b, so that the origin position can be set in a portion where the magnetic force is strong.

The mover 24 is connected to a limit switch 35.
When the origin position is detected by pressing the push button portion 44, the mover 24 comes into contact with the mounting piece 38 and the movement thereof is stopped.

Therefore, the mover 24 is received by the mounting piece 38, and the impact when stopping the mover 24 does not act on the limit switch 35. For this reason, breakage of the limit switch 35 is prevented.

[0057]

As described above in detail, the present invention relates to a limiter for detecting an origin position of a mover of a linear motor in an electric vertical blind using a linear motor as a drive source for transferring a slat. An excellent effect of providing a slat transfer device of an electric vertical blind that can easily position the switch and the stator of the linear motor is exhibited.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing an electric vertical blind.

FIG. 2 is a vertical sectional view of a hanger rail and a guide rail.

FIG. 3 is an exploded perspective view showing a stator of the linear motor.

FIG. 4 is a sectional view showing an end of a guide rail.

FIG. 5 is an exploded perspective view showing an end of a guide rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanger rail 2 Runner 3 Slat 5 Guide rail 23a, 23b Stator (magnet) 24 Mover 31 Lead runner 32 Control device 35 Limit switch 36 Cap 38 Mounting piece 45 Positioning piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E06B 9/36

Claims (3)

(57) [Claims] 1. A plurality of runners (2) are movably supported in a hanger rail (1), and slats (3) are suspended from and supported by the runners (2), respectively. A linear motor is arranged in a guide rail (5) arranged along the
A control device (32) for controlling the operation of 4), the leading runner (31) is moved by the mover (24), and the slat (3) is pulled out and folded, and the guide rail (5) is provided. An electric vertical blind provided with a limit switch (35) for detecting the origin position of the mover (24) at the end of the cap (36) attached to the end of the guide rail (5). Are the stators (23a, 2) of the linear motor.
3b) a slat transfer of an electric vertical blind, wherein a positioning piece (45) for positioning an end portion and a mounting piece (38) for mounting the limit switch (35) are integrally formed. apparatus. 2. A slat for an electric vertical blind according to claim 1, wherein said limit switch has only a push button portion protruding from a tip of said mounting piece. Transfer device. 3. The electric vertical blind according to claim 1, wherein the mounting piece (38) and the positioning piece (45) are arranged side by side along the moving direction of the mover (24). Slat transfer device.