JPH0511825Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a moving coil type linear motor for opening and closing curtains, and more particularly to a moving coil type linear motor for smoothly opening and closing curtains.

"Prior art" Previously, the applicant's first application filed in 1983
As shown in FIG. 6, the movable coil linear motor for opening and closing curtains disclosed in No. 20391 includes an outer rail 1 having a substantially inverted U-shaped vertical cross section and a leg portion 11 of the outer rail 1 engaged with the outer rail 1. , an inner rail 2 having a substantially inverted U-shaped vertical cross-sectional shape, and a flat permanent magnet 3 magnetized in the thickness direction and vertically disposed between the outer rail 1 and the inner rail 2. , has a substantially inverted U-shaped vertical cross-sectional shape, is locked to the inner rail 2 with the upper part serving as a locking guide 61, and is vertically arranged so that the coil is approximately parallel to the side surface of the permanent magnet 3. It was equipped with a coil 6. Then, the roller 71 of the drive runner 7 that pulls the curtain is arranged in the space in which the locking guide 61 of the movable coil 6 slides, and when the movable coil 6 slides according to Fleming's left hand rule, the roller 71 The drive runner 7 was in rolling contact with the inner rail 2 and moved along the outer rail.

However, since the rollers 71 of the drive runner 7 are arranged in a narrow space formed by the upper part of the outer rail 1 and the upper part of the inner rail 2, the rollers 71
The diameter of the roller 71 becomes very small, and the rolling force of the roller 71 is small. Furthermore, since the rollers 71 are cantilevered only on one side of the drive runner 7, when a curtain is hung, the drive runner 7 tilts and comes into contact with the inner rail 2, etc., preventing the drive runner 7 from moving smoothly. There was a problem.

In addition, as shown in FIG. 7, a moving coil type linear motor for curtain opening/closing with a different structure has a magnet holding part 21 integrally molded and a track of a roller 71 directed inward from both leg parts 11. The outer rail 1 is molded with a flange 12 as
Similarly to the conventional example described above, the permanent magnet 3 and the movable coil 6 were vertically arranged. Then, there was one in which the drive runner 7 was disposed below the movable coil 6 so that the rollers 71 of the drive runner 7 sandwiched the flange 12 of the outer rail 1 and the rotation axis of the rollers 71 was in the vertical direction.

However, in this structure, the rollers 71 of the drive runner 7 make sliding contact with the outer rail 1, so when the curtain is hung, the frictional force increases due to the weight of the curtain, and if the curtain becomes even slightly heavy, it cannot be opened and closed smoothly. It was hot.

``Problem that the invention attempts to solve'' Therefore, the present invention was made to solve the above problem, and by increasing the diameter of the roller in the drive runner, it is possible to smoothly open and close even heavy curtains. The purpose of the present invention is to provide a moving coil type linear motor for opening and closing curtains.

``Means for Solving Problems'' Therefore, the present invention has a substantially inverted U-shaped cross section with flanges extending inward from the bottom of both legs, and protruding inward from the middle of one leg. a plurality of flat plates magnetized in the thickness direction, arranged in the magnet holding part of the rail such that adjacent magnets have different polarities and the magnetic field is in the vertical direction; a permanent magnet having a shape, a movable coil disposed substantially parallel to the upper surface of the permanent magnet and sliding inside the rail; The drive runner should be provided inside the rail, including a drive runner having rollers on the left and right sides that make rolling contact with the flange of the rail, and a power supply pattern facing the movable coil and provided inside the rail. To provide a moving coil type linear motor for opening and closing curtains, which is characterized by an expanded space.

"Operation" According to the above configuration, the leg of the rail is provided with a flange and a magnet holder, and the magnet holder has a flat plate magnetized in the thickness direction so that the direction of the magnetic field is in the vertical direction. By arranging a permanent magnet and arranging a moving coil horizontally so as to be approximately parallel to the upper surface of the permanent magnet, a driving runner can be arranged inside the rail below the permanent magnet. Sufficient vertical space is provided for installation. In response to this space, the diameters of the rollers disposed on the left and right sides of the drive runner and in contact with the flanges of the rails are increased to ensure that the rollers make rolling contact with the flanges without sliding contact.

In addition, during the course of developing the present invention, the present inventor developed an outer rail 1 having a substantially inverted U-shaped vertical cross section and a permanent magnet 3 vertically arranged, as shown in FIG.
The movable coil 6 is arranged vertically parallel to the side surface of the permanent magnet, and the roller 71 that moves under the space in which the movable coil 6 slides and rolls into contact with the flange 12 of the outer rail 1 is moved left and right. A structure including a drive runner 7 was considered. However, when the diameter of the rollers 71 is increased in an attempt to increase the rolling force of the rollers 71 in the drive runner 7, a problem arises in that the width h of the outer rail 1 increases. However, in the present invention, as mentioned above, the width h of the outer rail 1 is
It is possible to increase the diameter of the roller 71 in the drive runner 7 without increasing the diameter.

"Example" Next, an example of the present invention will be described based on the accompanying drawings.

As shown in FIG. 1, the rail is composed of an outer rail 1 and an inner rail 2 that is engaged with the inside of the outer rail 1 via a plurality of locking protrusions 13. The outer rail 1 has a substantially inverted U-shaped longitudinal cross-sectional shape with an opening at the bottom, and on the inside of the upper part, there is a power supply pattern that alternately changes the direction of the current flowing through the movable coil 6 as the movable coil 6 slides. 5 and the first yoke 41 are provided therein.
A yoke 41 is disposed on the upper side, and the power supply pattern 5 is locked therein. Also, on the outside at the top,
In order to attach the outer rail 1 to a ceiling or the like, a pair of protruding mounting fins 15 is provided, and a wiring 51 for energizing the power supply pattern 5 is arranged in the recess formed by the pair of mounting fins. . Further, a flange 12 that vertically projects inward is formed at the lower end of both leg portions 11 of the outer rail 1. And this flange 1
2 is provided with a runner track 16 on which rollers 71 in the drive runner 7 roll so that the drive runner 7, which will be described later, moves smoothly. Moreover, in the intermediate part of one leg 11 of the outer rail 1,
In order to lock the inner rail 2, a support protrusion 17 is provided that vertically protrudes inward from the leg portion 11 and is provided with a locking protrusion 13.
A locking projection 13 is also provided on the flange 12 on the side.

The inner rail 2 is provided with a locking portion that engages the magnet holding portion 21 having a cylindrical cross-sectional shape with one side missing with the locking protrusion 13 of the outer rail 1. and support legs 23 which should be kept parallel to the support legs 23. The magnet holding portion 21 is provided with a claw 22 that locks the permanent magnet 3 so that it does not come off upward.

In the magnet holding portion 21 of the inner rail 2, a flat permanent magnet 3 with a flat second yoke 42 disposed at the bottom thereof is fitted horizontally. The permanent magnet 3 is located inside the outer rail 1 above the substantially central portion, is magnetized in the thickness direction, and has a magnetic field in the vertical direction. Adjacent magnets are arranged so that the polarities of adjacent magnets are different so that force acts in the same direction on a conducting wire in which current flows to the right and a conducting wire in which current flows to the left in the moving coil 6, which will be described later.

A moving coil 6 is disposed in a space above the permanent magnet 3. The movable coil 6 has a substantially U-shaped cross-sectional shape facing down, and the wound coil and the upper surface of the permanent magnet 3 are parallel to each other.
The guide legs 67 located on both sides are disposed in a horizontal state so as to wrap around the permanent magnet 3 inside. The wound coil has a conducting wire in the front-rear direction parallel to the longitudinal direction of the outer rail 1 and a conducting wire in the left-right direction perpendicular to the longitudinal direction of the outer rail 1,
The magnetic field of the permanent magnet 3 acts on the current flowing through the conductor wires in the left and right direction, and the inner rail 2 slides back and forth on the paper as a track that slides around the outer periphery of the inner rail 2. Further, the movable coil 6 is provided with a current collecting brush 63 on the top thereof, which comes into contact with the power feeding pattern 5 disposed in the power feeding pattern arrangement groove 14 and takes in the current.

As shown in FIGS. 1 and 2, one guide leg 67 at the end of the movable coil 6 is provided with a traction projection 62 for pulling the drive runner 7. A connecting plate 64 which is approximately U-shaped in plan view and which applies force to the drive runner 7 is fastened thereto.

As shown in FIGS. 1 and 2, the drive runner 7 has a locking ring 73 and a body 72 that projects outward from the opening of the outer rail 1. It consists of a roller 71 that rolls into contact with a runner raceway 16 provided on one flange 12. The drive runner 7 is sandwiched between the front and rear by a connecting plate 64 fastened to the movable coil 6, and has a structure in which force can be applied in the direction of movement of the movable coil 6. At this time, by arranging the permanent magnet 3 and the movable coil 6 horizontally and expanding the space in the vertical direction in which the drive runner 7 is to be arranged inside the outer rail 1,
The diameter of the roller 71 is increased to about half the height inside the outer rail 1.

As shown in FIG. 3, the movable coil type linear motor for opening and closing the curtain is such that when the curtain 10 is opened, the drive runner 7 moves the curtain 10
A free runner 75 is arranged so as to be located at the front in the direction in which the curtains are spread, and behind it is a free runner 75 that follows the drive runner 7 and hangs the curtain 10.
are installed in large numbers. In FIG. 3, when closing the curtain 10, the movable coil 6
moves to the right.

"Operation" Next, the operation of the above embodiment will be explained. In order to open and close the curtain 10, the power supply pattern 5
When the movable coil 6 is energized, the current collecting brush 6
Current is introduced into the coil via 3. In FIG. 1, the moving coil 6 is moved in accordance with Fleming's left-hand rule by the vertical magnetic field of the permanent magnet 3 and the current flowing through the horizontal conducting wire in the coil wound around the moving coil 6. In the front and back direction,
It slides on the inner rail 2 as a track. and,
The drive runner 7 is pushed by the movable coil 6 via the connecting plate 64 and moves under the outer rail 1.
At this time, by arranging the permanent magnet 3 and the movable coil 6 horizontally and increasing the diameter of the roller 71 in the drive runner 7 without increasing the width h of the outer rail 1, the movable coil 6 Even if the propulsive force is the same, the rolling force of the rollers 71 is increased, and the rollers 71 move while making reliable rolling contact with the runner track 16, so that the curtain 10 can be opened and closed smoothly.

In addition, since the permanent magnet 3 and the movable coil 6 are arranged horizontally and the power supply pattern 5 is arranged inside the upper part of the outer rail 1, the wiring 51 can be housed and arranged in the upper part of the outer rail 1. The power supply pattern 5 is no longer visible through the opening of the outer rail 1, and even if foreign matter accidentally enters the opening of the outer rail 1, the power supply pattern 5 can be prevented from being damaged. Furthermore, the magnetic field of the permanent magnet 3 is applied to the movable coil 6, the first yoke 41, and the second yoke 4.
2, a closed curve is drawn at the upper part of the outer rail 1, so there is no leakage of magnetic force and it does not affect the drive runner 7, etc.

Furthermore, since the space in which the moving coil 6 slides and the space in which the drive runner 7 moves are different,
The movable coil 6 is slid to pull the drive runner 7,
When the curtain 10 is opened, as shown in FIG. 3, the amount of space for the curtain 10 to fit can be reduced.

"Other Embodiments" The present invention is not limited to the details of the above embodiments, but for example, as shown in FIG.
The magnet holding part 21 may be molded integrally with the outer rail 1 without dividing the rail into the outer rail 1 and the inner rail 2. Also, as shown in FIG. A connecting concave portion 65 is provided on the front side of another movable coil 67 that does not have the traction protrusion 62 for pulling the drive runner 7, and a connecting convex portion 66 that engages with the connecting concave portion 65 is provided on the front side of another movable coil 67 that does not have the traction protrusion 62 for pulling the drive runner 7. 6 and 67 may be connected to increase the driving force for opening and closing the curtain.

"Effects" As described above, the moving coil linear motor for opening and closing curtains of the present invention has an approximately inverted U-shaped cross section with flanges extending inward from the bottom of both legs. A rail having a magnet holding part protruding inward from the middle, magnetized in the thickness direction, adjacent magnets having different polarities and a magnetic field directed in the vertical direction, and the magnet holding part of the rail having a plurality of flat plate-shaped permanent magnets disposed; a movable coil disposed substantially parallel to the upper surface of the permanent magnets and sliding inside the rail; A drive runner that hangs a curtain and has rollers on the left and right sides that make rolling contact with the flange of the rail, and a power supply pattern that faces the movable coil and is provided inside the rail, Since the curtain has a configuration in which the space in which the drive runner is disposed is enlarged, the diameter of the roller in the drive runner is increased so that even a somewhat heavy curtain can be opened and closed smoothly. In other words, the width of the outer rail can be reduced while increasing the diameter of the roller in accordance with the weight of the curtain to be hung. Furthermore, it is possible to prevent leakage of magnetic flux from the bottom of the rail, strengthen the movable coil's propulsion force, and prevent the power supply pattern from being damaged. It has excellent effects such as being able to fit it neatly so that the space is small.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view including a partial sectional view showing an embodiment of the present invention, Fig. 2 is a schematic perspective view showing the assembly of a drive runner to a moving coil, and Fig. 3 is a schematic side view including a partial sectional view showing an embodiment of the present invention. A schematic front view of a moving coil type linear motor for opening and closing curtains showing a state in which the runner is assembled to the rail. Fig. 4 shows another embodiment of the moving coil type linear motor for opening and closing curtains when the rail is integrally molded. FIG. 5 is a schematic side view including a partial sectional view of the motor; FIG. 5 is a schematic perspective view of a movable coil that can be connected; FIGS. 6a and 7a are conventional curtain opening/closing devices; 6b and 7b show the assembly of the moving coil and the drive runner; The corresponding schematic perspective views, FIGS. 8a and 8b, are a schematic side view and a schematic perspective view showing a moving coil type linear motor for opening and closing curtains, which was devised in the process of creating the present invention. 1...Outer rail, 11...Legs, 12...
Flange, 16... Runner track, 2... Inner rail, 21... Magnet holding part, 3... Permanent magnet, 5
...Power supply pattern, 6...Movable coil, 64...
Connection plate, 7... Drive runner, 71... Roller, 1
0...Curtain.

Claims (1)

[Scope of utility model registration request] It has a roughly inverted U-shaped cross section with flanges extending inward from the bottom of both legs, and a rail with a magnet holding part that protrudes inward from the middle of one leg, and a rail attached in the thickness direction. A plurality of flat plate-shaped permanent magnets arranged in the magnet holding part of the rail so that adjacent magnets have different polarities and the magnetic field is in the vertical direction, and are substantially parallel to the upper surface of the permanent magnets. a movable coil that slides inside the rail; and a drive runner that is pulled by the movable coil, hangs a curtain, and has rollers on the left and right sides that roll into contact with flanges of the rail. and a power supply pattern facing the movable coil and provided inside the rail, the movable coil for curtain opening/closing being characterized in that the space in which the drive runner is disposed inside the rail is expanded. type linear motor.