JPH0736798B2 - Linear motor type curtain device - Google Patents

Description

The present invention relates to a linear motor type curtain device attached to a window or the like of a house.

[Prior art and problems]

Conventionally, as a curtain device using a linear motor,
For example, a curtain drive device disclosed in JP-A-63-216510 is known.

The apparatus includes a field portion in which a yoke and magnet groups having different polarities are alternately arranged on the curtain rail, and a core base which is movably guided on the curtain rail and faces the magnet group. A linear motor is constructed by arranging a movable part formed by winding a coil around a plurality of cores integrally formed by projecting in the direction of the group and a commutator part for switching the polarity with respect to the movable part, and forming a linear motor, and a curtain is formed on the movable part. One of the features is that the movable part is downsized so that it can be opened and closed by mounting one end of it, and can be adapted especially to a curtain rail including a curved part.

However, since such a curtain drive device has a field part only on one of the left and right sides, an attractive force perpendicular to the moving direction is generated between the magnet group of the field part and the core of the movable part. After all, there is a problem that the propulsive force (conversion efficiency) is reduced due to the energy loss based on the suction force.

It is an object of the present invention to provide a linear motor type curtain device that solves the above problems existing in the prior art.

[Means for Solving the Problems]

The linear motor type curtain device 1 according to the present invention includes a curtain rail 2 formed in a rectangular frame shape in cross section, and magnet groups 3a arranged on both left and right inner surfaces of the curtain rail 2 and having different poles alternately arranged. A magnetic field portion having 3b, a movable unit arrangement slidably supported by rail portions 4a, 4b, 4c and 4d provided inside the curtain rail 2, and another surface arranged inside the curtain rail 2 And different polarity part
A linear structure is provided, which includes a commutator substrate 9 in which 9a and 9b are alternately arranged, and brush portions 10a, 10b, and 10c which are provided on the movable unit 8 and switch the polarity of each magnetic pole of the movable unit 8 in contact with the commutator substrate 9. In a linear motor type curtain device that constitutes a motor and is capable of moving a curtain hung on the curtain rail 2 by the movable unit 8, in particular, the movable unit 8
Are wound around n cores 5a, 5b, 5c each having an axis in the same direction as the moving direction and sequentially arranged in the same direction as the moving direction, and further winding each coil 6a, 6b, 6c. , 5b,
At both ends of 5c, by forming a U-shape so as to cover the coils 6a, 6b, 6c, magnetic pole plate portions 5ap, 5bp, 5cp, 5dp, 5ep, which generate 2n number of magnetic poles on one side on both sides, It is characterized by being configured by fixing 5fps.

[Action]

 Next, the operation of the present invention will be described.

According to the curtain device 1 of the present invention, the movable unit 8
Is attracted by the magnet groups 3a and 3b arranged on the left and right,
It is sucked in a direction perpendicular to the moving direction. However, the suction forces are canceled out because they are of equal magnitude in opposite directions,
After all, the attraction force in the left-right direction with respect to the movable unit 8 becomes zero. Therefore, the generated electromagnetic force is converted into propulsion force.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

2 is a curtain rail, which is formed in a rectangular frame shape in cross section.
The lower plate portion of the curtain rail 2 is provided with a slit 21, and a plurality of runners (not shown) for suspending the curtain are slidably arranged.

On the other hand, on the inner surface of the upper plate portion of the curtain rail 2,
The commutator substrate 9 having the conductor pattern shown in FIG.
It is sandwiched by a and 22b. The conductor pattern has positive polarity portions 9a and negative polarity portions 9b alternately arranged in the longitudinal direction.

On the other hand, on the inner surfaces of the left and right side plate portions of the curtain rail 2, the rail portion 4 is provided with a pair of left and right projecting strip portions that are vertically spaced
Form a, 4b, and 4c, 4d.

Rail parts 4a and 4b, and 4c and 4d are both left and right magnet groups
It has a positioning function for 3a and 3b, and between rail parts 4a and 4b, 4c and
A magnet group 3 forming a field part with the yoke 23a between 4d
a, the yoke 23b and the magnet group 3b forming the field part are fixed to each other. As shown in FIG. 2, each magnet group 3a, 3b has N poles and S poles alternately arranged in the longitudinal direction, and the pitch thereof is the polar portions 9 in the conductor pattern of the commutator substrate 9.
It matches the pitch of a and 9b.

The curtain rail 2 is integrally provided with laterally projecting flanges 2a and 2b at its upper end, and the flanges 2a and 2b are sandwiched by stays (not shown), so that the curtain rail 2 can be attached to an indoor wall or the like.

On the other hand, inside the curtain rail 2, a movable unit 8 which is movable is built in. The movable unit 8 has three cores 5a, 5b, 5c which have an axis in the same direction as the moving direction and are sequentially arranged in the same direction as the moving direction. The coils 6a, 6b, 6c are wound around each core 5a .... The pole plates 5ap and 5bp, 5cp and 5dp, 5ep and 5fp, which are bent in a U shape, are symmetrically fixed to both ends of each core 5a ... 2n) magnetic poles are generated on both left and right sides. In addition,
As shown in FIG. 2, the pitch of each core 5a is 7/6 of the pitch of the magnet groups 3a and 3b.

Further, a brush substrate 24 is provided on the upper end of the movable unit 8,
Three brush parts 10a, 10b, 10c arranged front and back are provided.
The brush portions 10a ... Contact the conductor pattern of the commutator substrate 9, and the pitch of the brush portions 10a ... Is 7/6 of the pitch of the conductor pattern.

As shown in FIG. 3, the coils 6a, 6b, 6c are delta connected, and each connected portion is connected to each brush portion 10a.

On the other hand, as shown in FIG. 1, a total of four shafts 25a, 2a having vertical shaft centers at the front, rear, left and right ends of the movable unit 8.
5b are provided, and outer peripheral grooves 27a are provided at the upper and lower ends of each shaft 25a.
Are provided so as to be rotatable. Laura 26a ...
The outer peripheral grooves 27a slide on the rail portions 4a, and the movable unit 8 is guided along the rail portions 4a.

Therefore, the curtain device 1 according to the present invention supplies the DC power to the polar parts 9a, 9b of the commutator substrate 9, so that the currents flowing through the coils 6a depending on the positions of the brush parts 10a ... with respect to the polar parts 9a. , And the magnetic poles in each core 5a are sequentially switched as shown in the chart of FIG. In the figure, No. 1 to No. 13 sequentially correspond to the moving positions, and particularly No. 5 corresponds to the positional relationship shown in FIG. Further, in the figure, N and S indicated by small letters indicate that the magnitude of the magnetic field generated is 1/2, in contrast to N and S indicated by large letters.

In this way, the movable unit 8 is arranged in the order shown in the figure.
The polarities of the magnetic poles of the cores 5a ... Are sequentially switched. Since the relationship between this polarity and the polarity of the magnet group 3a ... Is always attracted in the longitudinal direction of the curtain rail 2, if the polarity of the DC power supplied to the movable unit 8 is switched, the movable unit 8 The hook 28 that suspends the curtain can be moved by moving forward or backward along the rail portions 4a.

Although the embodiments have been described in detail above, the present invention is not limited to such embodiments and can be arbitrarily modified without departing from the gist of the present invention.

〔The invention's effect〕

As described above, in the linear motor type curtain device according to the present invention, in particular, the movable unit is coiled on each of n cores having an axis in the same direction as the moving direction and sequentially arranged in the same direction as the moving direction. Is wound around the core, and further, by forming a U-shape so as to cover the coil at both ends of each core, magnetic pole plate portions for generating 2n number of magnetic poles on one side are fixed on both sides. Therefore, the following remarkable effects are produced.

Basically, the magnetic force acts more effectively than the movable unit using only the coil, and an efficient driving force can be obtained,
As a result, the movable unit can be made compact and compact.

In addition, due to the direction of the coil and the shape of the core including the U-shaped magnetic pole plate, two magnetic poles are generated from one coil on one side, which improves efficiency and shortens the length of the movable unit in the moving direction. it can.

[Brief description of drawings]

1 is a longitudinal sectional view of a linear motor type curtain device according to the present invention, FIG. 2 is an exploded view showing the positional relationship of each part in the curtain device, and FIG. 3 is a coil connection in a movable unit of the curtain device. Fig. 4, Fig. 4: Chart showing the relationship between the position of the movable unit and the magnetic poles of the core in the curtain device. In the drawings, 1: curtain device, 2: curtain rails 3a, 3b: magnet groups 4a, 4b ...: rail parts 5a, 5b ...: core, 5ap, 5bp ...: magnetic pole plate parts 6a, 6b ...: coil, 8: Movable unit 9: Commutator board, 9a, 9b: Polar parts 10a, 10b, 10c: Brush part

Claims (1)

[Claims] 1. A curtain rail having a rectangular frame-shaped cross section, and a magnetic field section having magnet groups arranged on both right and left side surfaces inside the curtain rail and having alternating opposite poles.
A movable unit slidably supported by a rail portion provided inside the curtain rail; a commutator substrate arranged on the other surface of the curtain rail and having different polarity portions alternately arranged; In the linear motor type curtain device capable of moving the curtain hung on the curtain rail by the movable unit, the linear motor is configured to include a brush portion that contacts the commutator substrate and switches each magnetic pole of the movable unit. A coil is wound around each of n cores having an axis in the same direction as the moving direction and sequentially arranged in the same direction as the moving direction, and further, a U-shape is formed at each end of each core so as to cover the coil. A linear motor characterized in that the magnetic pole plate portions for generating 2n number of magnetic poles on one side are fixed to each other by being bent and formed on the left and right sides. Curtain equipment.