JPH0427795B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a linear slider device, and particularly to a linear slider device having a driving member driven to run by a linear motor means and a driven member magnetically coupled to the driving member. This invention relates to a slider device.

<Prior Art> An automatic vehicle curtain opening/closing device using a linear motor means is disclosed in Japanese Utility Model Application Publication No. 60-98489.

In this device, a curtain support hook part integrally provided on the slider of the linear motor means passes through a slit-shaped opening provided in a rail that guides the movement of the slider and faces the outside. Therefore, there is a possibility that water may enter the rail through the opening. Therefore, when this is used outdoors or in a bathroom, there is a risk that water droplets may adhere to the wiring board of the linear motor means, causing a short condition.

In order to improve this inconvenience, the driving member provided with the coil in the linear motor means is separated from the driven member provided with the hook portion, and a partition wall is sandwiched between these two members. It is conceivable to magnetically couple the two. In this way, the electrical component of the linear motor means can be configured to be waterproof, so that a linear slider device such as the above-mentioned automatic curtain opening/closing device can be used in an environment with water.

<Problems to be Solved by the Invention> On the other hand, if the dimensions in the moving direction of two members magnetically coupled with a partition wall in between are substantially the same, when the drive member reaches the running end, the two members The members will strike the end of the rail at approximately the same time. At that time, the driven member, which had been pulled by the driving member with magnetic attraction, rebounded due to its inertia.
The magnetic coupling between the two may be severed.

In view of such problems in the prior art, the main object of the present invention is to provide a linear slider device in which one of two magnetically coupled members is driven to travel by a linear motor means. It is an object of the present invention to provide a structure in which the magnetic coupling between the two members is not broken due to the impact force when the two members collide with each other.

<Means for Solving the Problems> According to the present invention, the present invention provides a drive member that is driven to travel by a linear motor means on a guide rail extending substantially horizontally; A linear slider device comprising a driven member magnetically coupled to a driving member across a partition wall, wherein a dimension of the driven member in the guide rail extending direction is set smaller than a dimension of the driving member in the same direction. At the same time, at a central position of the driving member and the driven member in the direction in which the guide rail extends,
This is achieved by providing a linear slider device characterized in that the magnetic coupling force between these two members acts.

<Operation> With this arrangement, when the driving member of the two members magnetically coupled to each other hits the end of the rail, the driven member coasts by a distance equal to the difference in length from the driving member. At the same time, since the magnetic coupling force that acts to maintain the center positions of both members aligned acts as a braking force on the driven member, the movement of the driven member is suitably damped.

<Embodiments> The present invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a linear slider device constructed based on the present invention, and FIG. 2 is a side sectional view taken along the - line in FIG. 1. As clearly shown in FIGS. 1 and 2, a square pipe-shaped casing 1 is formed by extruding aluminum material, for example. Two sets of block-shaped permanent magnets 4, 5, each serving as a stator of a linear motor means, are fixed to the inner surfaces 2, 3 of opposite side walls of the casing 1 with a gap spaced between them. Furthermore, a pair of rail members 6 and 7 are fixedly provided so as to cover the opposing surfaces and upper and lower surfaces of the permanent magnets 4 and 5, respectively. The two sets of permanent magnets 4 and 5 are arranged at a constant pitch interval P with their magnetic poles aligned so that the direction of magnetic flux generated between them changes alternately along the longitudinal direction of the casing 1. It is arranged.

Drive member 8 as a mover of linear motor means
has a cross-sectional shape consisting of portions 9 and 10 facing the upper and lower surfaces of both rail members 6 and 7, and a portion 14 between both rail members 6 and 7 that connects these two portions. It is designed to be movable along the longitudinal direction of 6 and 7.

A metal bearing 11 is fixed in the center of the upper part 9 of the drive member 8, and the shaft 13 of the left and right rollers 12, which are integrally formed on the left and right sides, is rotatably supported by the metal bearing 11. As shown in FIG. 2, the rollers 12 are provided at both ends of the drive member 8 in the moving direction, and thereby the drive member 8 runs on the upper surfaces 6a and 7a of both the rail members 6 and 7. It is becoming possible to do so. Note that the roller 12 is made of a magnetic material and is attracted to the permanent magnets 4 and 5, thereby preventing the driving member 8 from floating when it travels.

A connecting portion 14 between the upper and lower parts 9 and 10 of the driving member 8 includes, for example, a three-pole air-core coil 1 connected in a delta.
5 to 17, whose respective axes are both permanent magnets 4 and 5
They are arranged in series at equal pitch intervals of 2P/3 along the running direction so as to be orthogonal to the magnetic pole faces 4a and 5a. Sliding contacts 18 to 20 electrically connected to each of the coils 15 to 17 are fixed on the upper surface of the drive member 8. These sliding contacts 18-20
are elastically biased so as to come into sliding contact with a pair of conductive pattern members 23 and 24 provided on a wiring board 22 that is fixed along the longitudinal direction on the inner surface of the upper wall 21 of the casing 1.

A magnetic shield plate 25 having a substantially U-shaped cross section that is open downward is fixed to the lower surface of the lower part 10 of the drive member 8, and one permanent magnet 26 for magnetic coupling is fixed to the inside of the magnetic shield plate 25. ing.

An auxiliary casing 28 is integrally fixed to the lower surface of the bottom wall 27 of the casing 1. A driven member 32 is received within the space defined by the auxiliary casing 28 and the bottom wall 27 so as to be movable along the longitudinal direction of the auxiliary casing 28 .
This driven member 32 consists of a magnetic shielding plate 31 having a substantially U-shaped cross section, and the other permanent magnet 29 for magnetic coupling fixed therein so as to face one of the permanent magnets 26 described above. , its dimension in the moving direction is shorter than the dimension of the driving member 8 in the same direction.

The driven member 32 is inserted into a rail groove 34 recessed along the longitudinal direction on the lower surface of the bottom wall 27 of the casing 1.
The magnetic shield plate 31 is rotatably supported by a pair of left and right rollers 33 made of a non-magnetic material and rotatably provided at both ends in the direction of movement on the sides of the magnetic shield plate 31 .

A hook portion 35 is integrally provided on the lower surface of the magnetic shield plate 31 of the driven member 32 in a protruding manner. The free end of this hook portion 35 is connected to the auxiliary casing 28.
The auxiliary casing 28 passes through an opening 36 formed in the form of a slit along the longitudinal direction in the center of the bottom wall of the auxiliary casing 28, and protrudes below the auxiliary casing 28 to support a conveyed article such as a curtain (not shown). There is.

In this way, the driving member 8 and the driven member 32 are magnetically coupled to each other across the bottom wall 27 as a partition by the magnetic attraction between the permanent magnets 26 and 29, and then run without resistance. I'm starting to get it.

As shown in FIG. 3, the pair of conductive pattern members 23 and 24 are each formed into a comb-like pattern, and the power feeding portions 23a, 23a and 24b have a longitudinal dimension of 2P/3 and are arranged opposite to each other. 24
Insulating portions 37 having a dimension of P/3 in the running direction of the driving member 8 are disposed between each other. In addition, each sliding contact 18 to 20
are arranged in series at equal pitch intervals of 2P/3 along the sliding direction, and as the drive member 8 moves, each sliding contact 18 to 20 connects to both power feeding parts 23.
a and 24a alternately in sliding contact.

As shown in FIG. 2, seal members 38 and 39 are fixed to both ends 1a and 1b of the casing 1, respectively, so that the inside of the casing 1 is sealed. Therefore, it is possible to prevent water from entering the casing 1 and adhering to the wiring board 22 and the like.

Next, the operating procedure of this linear slider device will be explained with reference to FIGS. 4a to 4f. Figures 4a to 4f show the application state of positive and negative voltages to each sliding contact 18-20 for each pitch dimension (P/3) as the drive member 8 travels, and the application state of positive and negative voltages to the coils 15-17.
FIG. 3 is a schematic diagram showing an excitation state of the permanent magnet 4 and an arrangement state of the permanent magnets 4. FIG. Note that since the permanent magnets 4 and 5 are paired with each other, only one of the permanent magnets 4 is shown here.

For example, when the drive member 8 moves in the direction of the arrow shown in FIG. Voltages are applied sequentially. Therefore, as shown in FIG. 4a, each coil 1
When magnets 5 to 17 are excited, the driving member 8 moves in the direction of the arrow due to the attractive force and repulsive force generated between it and the permanent magnet 4. When the position shown in FIG. 4b is reached, each of the coils 15 to 17 is excited to the state shown in the figure, so that the driving member 8 moves in the direction of the arrow in the same manner as described above. In this way, as shown in FIGS. 4a to 4f, P/
Since each coil 15 to 17 is excited to the state shown in the figure for each pitch of 3, the driving member 8 is
It will move continuously in the direction of the arrow in the order shown in Fig. 4f. Note that by reversing the positive and negative voltages applied to the pair of conductive pattern members 23 and 24 shown in FIG. 3, the driving member 8 is moved in the opposite direction.

When the driving member 8 travels inside the casing 1 in this manner, the driven member 32 also moves together due to the magnetic coupling between the permanent magnets 26 and 29.

In the case of the rail end of the linear slider device having such a configuration, as schematically shown in FIG. Due to the inertial force, the driven member 32 coasts toward the position shown by the imaginary line (in the direction of the solid arrow). At this time, due to the magnetic attractive force between both permanent magnets 26 and 29, a magnetic coupling force is applied to the driven member 8 to maintain alignment with the center position of the driving member 8 in the running direction.
The braking force due to the magnetic coupling force acts in the direction of the broken line arrow, and the driven member 32 is damped. This makes it possible to prevent the magnetic coupling between the driving member 8 and the driven member 32 from separating, and also to facilitate the stopping operation of the driven member 32 at the running end.

FIG. 6 is a diagram corresponding to FIG. 5 showing a second embodiment of the present invention. The driving member 8 in this second embodiment includes a pair of permanent magnets 41a and 41b.
The driven member 32 includes a pair of permanent magnets 41a, 41b of the drive member 8 and a pair of permanent magnets 42a, 42b with different poles facing each other. is fixed. Therefore, even in this second embodiment, the magnetic attraction force acts to hold the driven member 32 at the center position in the traveling direction of the driving member 8, so that the same effect as in the first embodiment described above can be obtained. is obtained at the running end.

FIG. 7 is a diagram corresponding to FIG. 5 showing a third embodiment of the present invention. In the drive member 8 in this third embodiment, three permanent magnets 43a, 43b, and 43c are arranged in series at a predetermined interval from each other along the running direction. And in the driven member 32,
Two permanent magnets 44a, 44b along the running direction
are fixedly installed at a predetermined distance from each other. Furthermore, each permanent magnet 43a, 43b, 4 of the drive member 8
A magnetic member 45 is fixed between each of the magnets 3c, and permanent magnets 43a, 43b, 43c and permanent magnets 44a, 44b are arranged in a staggered manner so that the same poles face each other. Therefore, even in this third embodiment, the driving member 8 and the driven member 3
Both permanent magnets 43a, 43b, 43c, 44
A magnetic attraction force acts between a and 44b to hold the driven member 32 at the center position in the running direction of the driving member 8, and the driven member 32 and the driving member 8 are magnetically coupled, and the above-mentioned Effects similar to those of each embodiment can be obtained at the running end.

<Effects of the Invention> As described above, according to the present invention, two magnetically coupled
When two members are driven to travel toward the rail end and the driving member collides with the rail end, the driven member may coast to some extent and the braking force due to the magnetic coupling force acts suitably, so the driven member This will reduce the impact force on the Therefore, with an extremely simple structure, it is possible to prevent the magnetic coupling between the driving member and the driven member from being broken due to the impact force when the driving member reaches the running end, and to prevent the stopping operation of the driven member. It can be facilitated.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a linear slider device based on the present invention. FIG. 2 is a side sectional view taken along the - line in FIG. 1. FIG. 3 is a schematic diagram showing the structure of the wiring board of the device of the present invention. 4th a
Figures 4 to 4f are explanatory diagrams showing the operating state of the device of the present invention. FIG. 5 is an explanatory diagram schematically showing the operation of the device of the present invention at the running end. FIG. 6 is an explanatory diagram showing a second embodiment of the present invention.
FIG. 7 is an explanatory diagram showing a third embodiment of the present invention. 1... Casing, 1a, 1b... End surface, 2,
3... Inner surface of side wall, 4, 5... Permanent magnet, 4a, 5
a...Magnetic pole surface, 6, 7...Rail member, 6a, 7
a...Top surface, 8...Driving member, 9, 10...Part, 11...Metal bearing, 12...Roller, 13
...Axis, 14...Part, 15-17...Coil,
18-20...Sliding contact, 21...Top wall, 22...
... Wiring board, 23, 24 ... Conductive pattern member, 2
3a, 24a...Power supply part, 25...Magnetic shield plate, 26...Permanent magnet, 27...Bottom wall, 28...
...Auxiliary casing, 29...Permanent magnet, 31...
Magnetic shield plate, 32... Driven member, 33... Roller, 34... Rail groove, 35... Hook portion, 3
6... Opening, 37... Insulating portion, 38, 39...
... Seal member, 41a, 41b ... Permanent magnet, 4
2a, 42b...Permanent magnet, 43a, 43b, 4
3c...Permanent magnet, 44a, 44b...Permanent magnet, 45...Magnetic material member.

Claims (1)

[Claims] 1. A guide rail 6 extending substantially horizontally,
7 and a driven member 32 magnetically coupled to the driving member 8 with a partition wall 27 in between, the driven member 32 in the extending direction of the guide rails 6 and 7 are set smaller than the dimensions in the same direction of the driving member 8, and the guide rails 6 and 7 in the driving member 8 and the driven member 32 are A linear slider device characterized in that the magnetic coupling force between these members 8 and 32 acts at a central position in the direction.