JPH0799770A - Linear motor - Google Patents

Abstract

(57) [Abstract] [Purpose] It is not necessary to make a long stator, it is low cost, convenient for transportation, and can be easily made into a stator of any length, and it can be assembled to a rail. The stickiness is improved. [Arrangement] A mover 24 movably supported by the drive rail 13, a trolley 19 for supplying power to the mover 24,
In the linear motor M composed of the stator 100 arranged on the drive rail 13, the stator 100 is arranged in the yoke 22 alternately in the longitudinal direction of the rail, with the yoke 22 divided into a predetermined length in advance. A plurality of split stator units 101 composed of magnets 23a and 23b having different magnetic poles are connected to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor used as a drive source for, for example, an electric vertical blind or curtain.

[0002]

2. Description of the Related Art Conventionally, as an electric vertical blind, for example, an electric vertical blind in which a rotary motor is arranged at an end of a hanger rail and a slat is transferred by a driving force of the rotary motor is realized. Is being attempted.

On the other hand, as disclosed in Japanese Patent Application Laid-Open No. 4-187112, there is one using a linear motor as a drive source of an electric curtain for automatically opening and closing the curtain.

[0004]

When the linear motor is used as described above, the structure of the drive source is simple and compact, and the mounting work is also simple. In addition, noise during driving is reduced, and it is optimal as a drive source for electric vertical blinds and curtains installed in houses and the like.

By the way, when a linear motor is used as a drive source for, for example, an electric vertical blind or a curtain, the stator of the linear motor is arranged along the hanger rail or the curtain rail, which makes the stator longer.

As described above, a long stator along a hanger rail or a curtain rail is difficult to manufacture, costly, and bulky and inconvenient to carry. Moreover, since the stator of the linear motor becomes long, the assemblability to rails such as hanger rails and curtain rails also deteriorates.

Further, the length of the electric vertical blinds, curtains, etc. may differ depending on the place where they are provided, and it is costly to manufacture a stator having a length suitable for each use, and therefore, it is necessary to use it at the construction site. Although it is cut to a predetermined length, the stator has magnets with different magnetic poles alternately in the longitudinal direction of the rail, so the magnets obstruct and cannot be cut easily, and a magnetic circuit is constructed. The yoke is made of iron, and it takes time to cut it on site.

The present invention has been made in view of the above problems, does not require the production of a long stator, is low in cost, is convenient for transportation, and is a stator having an arbitrary length easily. The purpose of the present invention is to provide a linear motor that can be mounted on a rail and can be easily assembled.

[0009]

As described above, according to the first aspect of the invention, the mover movably supported by the drive rail, the trolley for supplying power to the mover, and the drive rail are arranged. In the linear motor including a stator, the stator is divided into a yoke formed by dividing the stator into a predetermined length in advance, and magnets having different magnetic poles alternately arranged in the yoke in the rail longitudinal direction. It is characterized in that a plurality of stator units are connected.

[0010]

According to the first aspect of the invention, the stator of the linear motor is constructed by connecting a plurality of divided stator units formed by dividing the linear motor in a predetermined length in advance, and connecting a plurality of divided stator units. This makes it possible to easily create a stator of any length.

Further, since the divided stator unit is formed by dividing it into predetermined lengths in advance, it is not necessary to prepare a long stator, mass production can be performed at low cost, and it is convenient because it is not bulky to carry. Furthermore, the assemblability to the rail is improved.

[0012]

Embodiments of the linear motor of the present invention will be described below with reference to the drawings. 1 is a front view showing an electric vertical blind, FIG. 2 is a sectional view showing the electric vertical blind, FIG. 3 is an exploded perspective view showing a stator of a linear motor, and FIG. 4 is a split stator unit of the linear motor. FIG. 5 is a plan view showing a stator configured as described above, and FIG. 5 is a cross-sectional view showing a magnetic flux state of a connecting portion of a stator configured by connecting split stator units of a linear motor.

A large number of runners 2 are movably supported in a hanger rail 1 attached to the wall surface of the window or the like, and slats 3 are suspended from each runner 2. The tilt case 4 is attached to one end of the hanger rail 1.
The tilting case 4 has a stepping motor (not shown) for adjusting the angle of each slat 3.

A guide rail 5 is attached to the rear of the hanger rail 1 over substantially the entire length of the hanger rail 1, and a linear guide which operates as a drive source for transferring each slat 3 along the hanger rail 1 is mounted on the guide rail 5. A motor M is arranged.

The structure of the guide rail 5 and the linear motor M arranged in the guide rail 5 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 surface of the hanger rail 1. That is, the protrusion 7 protruding upward is formed on the upper edge of the rear side surface of the hanger rail 1, and the protrusion 8 protruding downward is formed on the lower edge of the rear side surface of the hanger rail 1.

The hanger frame 6 is made of a substantially angled aluminum extrusion mold material, and concave lines 9 and 10 facing each other are formed at both upper and lower edges of the vertical side of the hanger frame 6. The interval between the concave lines 9 and 10 is set to be slightly larger than the distance between the convex lines 7 and 8. Then, the hanger rail 6 is connected to the rear of the hanger rail 1 by inserting the hanger rail 1 from the longitudinal side of the hanger frame 6 so that the projections 7 and 8 engage with the recesses 9 and 10. It

A pair of locking pieces 11 and 12 facing each other are formed at both front and rear edges of the hanger frame 6 on the lateral side.

A drive rail 13 is suspended and supported by the locking pieces 11 and 12 of the hanger frame 6. That is, the drive rail 13 is formed of an aluminum extruded material in the shape of a groove with one side open on the hanger rail 1 side, and the upper surface of the upper side of the drive rail 13 has a pair of hanging pieces 1 projecting like hooks in the front-rear direction.
4, 15 are formed. The distance between the two hanging pieces 14 and 15 is set to be slightly smaller than the distance between the locking pieces 11 and 12. The drive rail 13 is hung from the hanger frame 6 by inserting the drive rail 13 from the longitudinal side of the hanger frame 6 so that the hanging pieces 14 and 15 engage with the locking pieces 11 and 12. Supported.

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. The first holding piece 16,
A trolley holder 18 is inserted between and supported by 17 and three trolleys 19 as power supply lines are supported in parallel on the lower surface of the trolley holder 18 along the longitudinal direction of the drive rail 13. The trolley holder 18 is made of an electrically insulating synthetic resin, and the trolley 19 is made of a thin copper plate. A wiring cord (not shown) for supplying a control current to the trolley 19 is connected to one end of the trolley 19 by soldering or a connector.

On the upper surface of the lower side of the drive rail 13, a pair of second retaining pieces 20 and 21 are formed so as to project in the directions opposite to each other, and the tips thereof project upward.

A long plate-shaped stator 100 is inserted and arranged between the second holding pieces 20 and 21 and the upper surface of the lower side of the drive rail 13. The stator 100 is divided into a predetermined length in advance. It is configured by connecting a plurality of split stator units 101 formed as described above, and has substantially the same length as the drive rail 13. A large number of disc-shaped magnets 23a are formed on the upper surface of the yoke 22 that constitutes the split stator unit 101.
23b is fixed by adhesion. And each magnet 2
3a and 23b are magnets 23a whose upper surface has an S pole
Similarly, an even number of magnets 23b having N poles on the upper surface are alternately arranged, and the magnets 23a and 23b are located between the second holding pieces 20 and 21 of the drive rail 13.

At one end of the yoke 22 of the split stator unit 101, there is a fitting projection 22 projecting in the longitudinal direction of the yoke 22.
a is formed, and a fitting recess 22b is formed at the other end of the yoke 22. Further, the fitting protrusion 22a of the yoke 22
Locking concave portions 22c are formed on both sides of the base portion of the above, and locking convex portions 22d are formed at the tip of the fitting concave portion 22b.

The yoke 2 of this split stator unit 101
The second fitting concave portion 22b is replaced with another split stator unit 101.
The magnet 23b, which is engaged with the fitting protrusion 22a of the yoke 22 in the direction perpendicular to the surface of the yoke 22 and is fixed in the fitting recess 22b of the yoke 22 in this engaged state, is not attached to the other split stator unit 101. It abuts on the fitting projection 22a of the yoke 22 to prevent it from coming off.

Further, the fitting recess 22b of the yoke 22 of the split stator unit 101 and the other split stator unit 10 are provided.
In the engaged state of the first yoke 22 with the fitting projection 22a, the fitting recess 22c is provided in the locking recesses 22c on both sides of the fitting projection 22a.
The locking projection 22d at the tip of b is engaged, and the yoke 2
2 is regulated to be removed in the longitudinal direction.

The fitting recess 22b of the yoke 22 of the other split stator unit 101 is further engaged with the fitting projection 22a of the yoke 22 of the other split stator unit 101,
By repeating such connection, the stator 100 having substantially the same length as the drive rail 13 is formed.

In this way, the stator 10 of the linear motor M is
0 is configured by connecting a plurality of split stator units 101 formed by dividing the stator into predetermined lengths in advance, and by connecting a plurality of split stator units 101, the stator 100 of an arbitrary length can be easily formed. Can be created.

Therefore, even if the drive rails 13 have different lengths, a plurality of split stator units 101 are provided.
Are connected in series to correspond to the length of the drive rail 13, it becomes possible to easily arrange the magnets 23a and 23b over substantially the entire length of the drive rail 13.

The magnets 23a and 23b located at both ends of the split stator unit 101 are connected to the split stator unit 1.
When 01s are connected in series, the magnets 23a and 23b in the connecting portion are adjacent to the magnets 23 in the other portions.
They are arranged on the yoke 22 of the split stator unit 101 so as to have the same intervals as a and 23b. The yoke 22 of the split stator unit 101 is the drive rail 1
Positioned and fixed with respect to 3.

Further, since the stator 100 is formed by dividing the divided stator unit 101 into a predetermined length in advance, it is not necessary to prepare the long stator 100, mass production is possible at low cost, and it is bulky to carry. It is convenient without. Further, the stator 100 is appropriately connected with the split stator units 101 and is made to have substantially the same length as the drive rail 13, so that the assemblability to the drive rail 13 is improved.

Further, the S pole magnet 2 at one end fixed to the yoke 22 of the split stator unit 101 by adhesion.
3a is in a position where it does not interfere with the locking recess 22c, and the N pole magnet 23b at the other end does not project from the tip of the fitting recess 22b. The pole magnet 23b is protected by the yoke 22 of the split stator unit 101,
It prevents contact with obstacles and scratches during handling.

Further, this stator 100 is constructed by connecting split stator units 101, and this connecting portion is such that the split stator unit 101 is almost at the center of the N-pole magnet 23b as shown in FIG. Since the magnet is divided, the magnetic flux generated by the N-pole magnet 23b and the adjacent S-pole magnet 23a is relatively less adversely affected.

Further, in the yoke 22 of the split stator unit 101, an even number and the same number of S-pole magnets 23a and N-pole magnets 23b are arranged, and the fitting projections 22a and the fitting recesses are arranged. Since 22b is provided, the connecting direction becomes unidirectional by providing only one type of split stator unit 101, and the connecting directions are sequentially performed without considering the connecting direction. The stator 100 corresponding to can be created.

A linear motor M is provided in the drive rail 13.
The mover 24 is movably arranged. The mover 24 is formed in a rectangular parallelepiped shape and has a plurality of coils C.
Wheels 25 are rotatably supported by support legs 26 at the four corners of the lower surface of the drive rail 13 along the longitudinal direction of the drive rail 13. A guide groove 27 for guiding the wheel 25 is formed 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 rolls along the guide groove 27.

Therefore, the mover 24 is the drive rail 13
It is movably supported in the longitudinal direction of the drive rail 13. Further, inside the respective support legs 26 positioned in the front-rear direction of the mover 24, the tip end portions 20a, 21a of the second holding pieces 20, 21 are erected close to the respective support legs 26, and the mover 24 The first holding pieces 16 and 17 are located close to the inside of the support guide 50 located in the front-back direction of the upper part of the
The distal ends 20a and 21a of the holding pieces 20 and 21 and the first holding pieces 16 and 17 prevent the movable element 24 from derailing.

Six brushes 28 are provided on the upper surface of the mover 24, and the tips of the brushes 28 project upward so as to contact the trolley 19. And trolley 19
The mover 24 and the stator 100 form a linear motor M.

A connecting arm 29 is formed on the front surface of the mover 24, the tip of which projects downward from the hanger frame 6, and the drive hook 30 is provided at the tip of the connecting arm 29.
The base end of is attached. The tip of the drive hook 30 is connected to the lead runner 31. Therefore, the lead runner 31 moves along the hanger rail 1 as the mover 24 moves. As a result, the leading runner 2 connected to the lead runner 31 also moves.

As shown in FIGS. 1 and 2, in the hanger rail 1, a plurality of tilt guides 32 are attached at substantially equal intervals in the longitudinal direction of the hanger rail 1. A tilt rail 33 is supported by the tilt guide 32 via a suspending member 33a so as to be movable in the longitudinal direction of the hanger rail 1, and is supported so as to move in the front-back direction of the hanger rail 1 along with the movement in the longitudinal direction. ing.

An upper end portion of a turn arm 34 rotatably supported by each runner 2 is movably and rotatably supported on the tilt rail 33. Therefore, when the tilt rail 33 is moved in the front-back direction of the hanger rail 1, each turn arm 34 is rotated and each slat 3 is rotated.

The tilt rail 33 is reciprocally driven by the stepping motor along the longitudinal direction of the hanger rail 1. Therefore, when the tilt rail 33 is driven based on the operation of the stepping motor, the tilt rail 33 is moved in the front-back direction of the hanger rail 1 by the action of the tilt guide 32. Then, the turn arm 34 is rotated and the slat 3 is rotated.

The runners 2 are connected by a known spacer 35, and the distance between them is set within a fixed value. Therefore, when the lead runner 31 is moved in the slat pull-out direction, the following runner 2 follows the preceding runner 2 with a constant interval. Further, when the lead runner 31 is moved in the slat folding direction, the lead runner 31 operates so as to push back the succeeding runners 2 sequentially in the slat folding direction.

As shown in FIG. 1, a control device 37 is connected to the tilt case 4 via a wiring cord 36, and an operating device 39 is connected to the control device 37 via a wiring cord 38. The control device 37 may be driven by a cordless operating device.

The operation of the operating device 39 controls the operations of the linear motor M and the stepping motor to allow the slat 3 to be pulled out and folded in, and the slat 3 to be adjusted in angle.

In the electric vertical blind constructed as described above, when the operating device 39 is appropriately operated, the control device 37 is activated.
By this, a control current is supplied to the coil C of the mover 24 via the trolley 19. Then, a magnetic force is generated in the mover 24, an attractive force and a repulsive force are generated between the mover 24 and the magnets 23a and 23b, and the mover 24 is moved along the drive rail l3. Then, the lead runner 31 is moved along with the movement of the mover 24, and the slat 3 is pulled out and folded. Further, the stepping motor is operated to move the tilt rail 33, and the angle of each slat 3 is adjusted.

Next, the mounting work for mounting the linear motor M on the drive rail 13 in the above-described electric vertical blind will be described. To attach the trolley 19 to the drive rail 13, the trolley holder 18 to which the trolley 19 is previously attached is inserted between the first holding pieces 16 and 17.

To attach the magnets 23a and 23b to the drive rail 13, the plurality of magnets 23a and
A plurality of split stator units 1 to which 3b is preliminarily adhered and fixed
While sequentially connecting 01, the stator 100 is disposed by being inserted between the second holding pieces 20 and 21. And the mover 24
Trolley 19
And the stator 100, the mover 24 is movably supported by the drive rail 13 to form the linear motor M.

Therefore, the yoke 22 and the magnets 23a and 23b which form the stator 100 of the linear motor M, the trolley 19 and the drive rail 13 can be mounted very easily.

[0048]

As described above in detail, according to the first aspect of the present invention, the stator of the linear motor is formed by connecting a plurality of split stator units formed by dividing the stator into a predetermined length in advance. Therefore, by connecting a plurality of split stator units, a stator having an arbitrary length can be easily created.

Further, since the divided stator unit is formed by dividing it into a predetermined length in advance, it is not necessary to prepare a long stator, mass production is possible at low cost, and it is convenient because it is not bulky to carry. Assembling to the rail is improved.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing an electric vertical blind.

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

FIG. 4 is a plan view showing a stator configured by connecting split stator units of a linear motor.

FIG. 5 is a cross-sectional view showing a magnetic flux state of a connecting portion of a stator configured by connecting split stator units of a linear motor.

[Explanation of symbols]

 13 drive rail 19 trolley 22 yokes 23a, 23b magnet 24 mover 100 stator 101 split stator unit M linear motor

Claims (1)

[Claims] 1. A linear motor comprising a mover movably supported by a drive rail, a trolley for feeding power to the mover, and a stator arranged on the drive rail, wherein the stator is It is characterized in that a plurality of split stator units each of which is formed by dividing the yoke into a predetermined length in advance and magnets of different magnetic poles which are alternately arranged in the rail longitudinal direction are connected to each other. Linear motor.