JPH037111A - Linear motor curtain device - Google Patents

Abstract

PURPOSE:To approximately double drive force and noise by attracting a movable unit with the attracting force of groups of magnets disposed on right and left sides in the direction vertical to the movement, offsetting the attractive forces produced in directions opposite to each other with an identical magnitude, and efficiently converting electromagnetic forces produced into thrust forces. CONSTITUTION:When DC power is supplied to polarity sections 9a, 9b of a commutator board 9 of a curtain device 1, currents flowing through coils 6a,... change their magnitudes and directions according to the positions of brush sections 10a,... corresponding to the polarity sections 9a,..., and the polarities of cores 5a,... change in succession. As the positional relationship is such that the movable unit 8 is attracted always in the longitudinal direction of a curtain rail 2 as the polarity of each of the cores 5a,... changes successively with respect to a group of magnet 3a,..., the movable unit 8 is moved back and forth along a rail portion 4a by changing the polarity of DC power supplied to the movable unit 8 so that a hook 28 hanging a curtain is moved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a linear motor type curtain device attached to a window of a house or the like.

[Prior art and issues]

Conventionally, curtain devices using linear motors are
For example, a curtain driving device disclosed in Japanese Unexamined Patent Publication No. 63-216510 is known.

The device consists of a field section including a yoke on a curtain rail and a group of magnets with different polarities arranged alternately along the yoke, and a core base that 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 coils around a plurality of integrally formed cores that protrude in the direction of the group, and a commutator part that switches the polarity of the movable part. It opens and closes by attaching it to one end, and is characterized by a smaller movable part so that it can be adapted to curtain rails that include curved parts.

However, since such a curtain drive device has field parts only on the left and right sides, an attractive force is exerted in a direction perpendicular to the direction of movement between the magnet group of the field part and the core of the movable part. As a result, there is a problem in that the propulsive force (conversion efficiency) decreases due to energy loss based on the suction force.

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

[Means to solve the problem]

The linear motor type curtain device l according to the present invention includes a curtain rail 2 formed into a rectangular frame shape in cross section, magnet groups 3a arranged on both left and right sides inside the curtain rail 2, and magnet groups 3a having different polarities arranged alternately. 3b, and rail parts 4a, 4b, 4 provided inside the curtain rail 2.
It is slidably supported by c14d, and
Coils 6a, 6b, 6c are respectively wound around n number of cores 5a, 5b, 5C which are carefully aligned in the same direction as the moving direction and arranged sequentially in the same direction as the moving direction.
Magnetic pole plate portions 5 a p, 5 extend from both ends of b, 5 c to both left and right sides and generate 2n number of magnetic poles on each side on both left and right sides.
b p, 5 c p, 5 d p, 5 e p.

5 fp, a commutator board 9 disposed on the other surface of the interior of the curtain rail 2 and having different polarity parts 9a and 9b arranged alternately, and a commutator board 9 provided in the movable unit 8 and having different polarity parts 9a and 9b arranged alternately. A brush part lOaXl 0 bSI Oc is configured to switch the polarity of each magnetic pole of the movable unit 8 in contact with the linear motor, and the curtain suspended from the curtain rail 2 can be moved by the movable unit 8. shall be.

[For production]

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

According to the curtain device l according to the present invention, the movable unit 8
is attracted in a direction perpendicular to the moving direction by the attraction force of the magnet groups 3a and 3b arranged on the left and right sides. but,
Since the suction forces occur in opposite directions with the same magnitude, they cancel each other out, and as a result, the suction force on the movable unit 8 in the left-right direction becomes zero.

Therefore, the generated electromagnetic force is efficiently converted into propulsive force.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

Reference numeral 2 denotes a curtain rail, which is formed into a rectangular frame shape in cross section.

A slit 21 is provided in the lower slope part of the curtain rail 2, and a plurality of launches (not shown) for hanging the curtain are slidably arranged therein.

On the other hand, the inner surface of the upper plate portion of the curtain rail 2 has a second
The commutator board 9 having the conductor pattern shown in the figure is attached to the protrusion section 2.
2 a and 22 b.

Note that the conductor pattern has positive polarity portions 9a and negative polarity portions 9b alternately arranged in the longitudinal direction.

On the other hand, a pair of vertically spaced left and right protrusions are provided on the inner surfaces of the left and right side panels of the curtain rail 2, so that the rail portion 4
λ, 4b, and 4c and 4d are formed.

The rail parts 4a and 4b, as well as 40 and 4d, both have a positioning function for the left and right magnet groups 3a and 3b, and between the rail parts 4a and 4b, and between 4C and 4d, there is a yoke 23a and a magnet group forming a field part. The 3a1 yoke 23b and the magnet group 3b constituting the field section are fixed to each other. As shown in FIG. 2, each magnet group 3a, 3b has N poles and S poles arranged alternately in the longitudinal direction, and the pitch thereof matches the pitch of each polar portion 9a, 9b in the conductor pattern of the commutator board 9. .

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

On the other hand, inside the curtain rail 2, a movable unit 8 that is freely movable is built-in. The movable unit 8 has three cores 5a, 5b, and 5c that have their axes in the same direction as the moving direction and are sequentially arranged in the same direction as the moving direction. Each core 5a・
... are wound with coils 6a16b and 6c. each core 5
At both ends of a... there is a magnetic pole plate portion 5ap bent in a U-shape.
and sbp, 5゜p and sdp, and 5ep and 5fp are fixed symmetrically, and two (
20 magnetic poles are generated on both the left and right sides. In addition, as shown in FIG. 2, the pitch of each core 5a is equal to the pitch of the magnet group 3.
The pitch is 7/6 with respect to the pitch of a and 3b.

Further, a brush board 24 is provided at the upper end of the movable unit 8, and three brush parts 10a, 10b, loc
will be established. The brush portions 10a are in contact with 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.

In addition, as shown in FIG. 3, the coils 6a and 6b.

6c is connected in delta, and each connection part is connected to each brush part 10a.
Connect to...

On the other hand, as shown in FIG. 1, a total of four soyafts 25a having vertical axes are installed at the rear left and right ends of the movable unit 8.
, 25b... are provided, and a roller 2 having an outer circumference Wit 27a... is provided at the upper and lower ends of each shaft 252L...
6a... is provided rotatably. The outer circumferential grooves 27a of the rollers 26a slide on the rail portions 41, and the movable unit 8 is guided along the rails 41.

Therefore, the curtain device l according to the present invention supplies DC power to each of the polar parts 9a and 9b of the commutator board 9.
if a2 polar part 9a. Bran WII Oa.
The magnitude and direction of the current flowing through each coil 6a change depending on the position of the coils 6a, and the magnetic poles in each core 5a change sequentially as shown in the chart in FIG. In addition, in the same diagram, No. 1 to No. 13 correspond to the moving positions in order, and in particular, No. 5 corresponds to the positional relationship shown in FIG. 2.

In addition, in the same diagram, N and S shown in large letters indicate that the magnitude of the generated magnetic field is 1/2, while N and S indicated in small letters indicate that the magnitude of the generated magnetic field is 1/2.

In this way, move the movable unit 8 according to the order shown in the same diagram.
The polarity of the magnetic pole in each core 5a... is sequentially switched. The relationship between this polarity and the polarity of the magnet group 31 is such that the curtain rail 2 is always attracted in the longitudinal direction, so if the polarity of the DC power supplied to the movable unit 8 is switched, the movable unit 8 moves forward or backward along the rail portions 4a... and can move the hooks 28 on which the curtains are hung.

Although the embodiments have been described in detail above, the present invention is not limited to these embodiments, and can be arbitrarily modified within the scope of 8 without departing from the gist of the present invention.

〔Effect of the invention〕

As described above, the linear motor type curtain device according to the present invention has a group of magnets constituting a field section on both left and right sides of the inside of the curtain rail formed in a rectangular frame shape in cross section, and also has an axis in the same direction as the moving direction. A movable unit that winds a coil around n number of cores each having a core and sequentially arranged in the same direction as the moving direction, and extends both ends of each core to both left and right sides to generate 2n number of magnetic poles on each side. Since the linear motor is configured by arranging the linear motor, the attraction force in the left and right direction is canceled out, and the supplied power is efficiently converted into propulsive force. In particular, when the same power is supplied, the driving force is almost doubled compared to the conventional configuration (the magnet group is only on one side), and it also has the advantage of ensuring smooth movement and reducing noise generation. play.

[Brief explanation of drawings]

Fig. 1.2 A vertical sectional view of the linear motor type curtain device according to the present invention. Fig. 2. An exploded view showing the positional relationship of each part in the curtain device. Fig. 3. A connection diagram of the coils in the movable unit of the curtain device. , Figure 4 is a diagram showing the relationship between the position of the movable unit and the magnetic pole of the core in the curtain device. In the drawing, 1. Curtain device 2. Curtain rail 32L, 3
b. Magnet groups 4a, 4b..., rail parts 5a, 5b-: Cores 6a, 6b - Coil 8. Movable unit 9. Commutator board a1 9 Bipolar part Oa. bl: Brush part

Claims (1)

[Claims] A curtain rail formed in the shape of a rectangular frame in cross section, a field section having a group of magnets arranged on both left and right sides of the inside of the curtain rail and having different polarities arranged alternately, and a rail section provided inside the curtain rail allow sliding. Coils are wound around n number of cores that are freely supported, have their axes in the same direction as the movement direction, and are arranged sequentially in the same direction as the movement direction, and extend from both ends of each core to both the left and right sides. a movable unit having a magnetic pole plate portion that generates 2n magnetic poles on both left and right sides; a commutator board disposed on the other surface inside the curtain rail and having different polarity portions arranged alternately; , and a brush portion that switches each magnetic pole of the movable unit in contact with the commutator substrate, and a linear motor is configured, and the movable unit is configured to allow the movable unit to move a curtain suspended on a curtain rail. Motorized curtain device.