WO2017033371A1

WO2017033371A1 - Linear motor device and sliding door device

Info

Publication number: WO2017033371A1
Application number: PCT/JP2016/003002
Authority: WO
Inventors: 稔博秋山; 豊彦辻本; 保尾崎; 秀明安倍
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-08-26
Filing date: 2016-06-22
Publication date: 2017-03-02

Abstract

A linear motor device (10) is designed to move a sliding door (40) along a rail (30) which is disposed on an upper frame. The linear motor device (10) is equipped with: a plurality of permanent magnets (31) which are attached to an upper frame (20) along the rail (30); a plurality of electromagnets (41) which are attached to the sliding door (40) along the rail (30); a drive circuit (50) which is attached to the sliding door (40) and which drives the plurality of electromagnets (41); and a contactless power supply circuit (60) which is attached to the upper frame (20) and which supplies power in a contactless manner to the drive circuit (50).

Description

Linear motor device and sliding door device

The present invention relates to a linear motor device and a sliding door device.

Conventionally, a sliding door opening and closing device that automatically opens and closes a sliding door by a motor is known. As such a sliding door opening / closing device, a gear motor type opening / closing device and a linear motor type opening / closing device are known. Patent Document 1 discloses a linear drive sash as a linear motor type opening / closing device.

JP 2007-270535 A

In a linear motor type switching device, the sliding door is opened and closed by switching the magnetic poles of the electromagnet. Here, as the number of electromagnets increases, the scale of the circuit that drives the electromagnets increases. Also, from the viewpoint of component cost, it is desirable that the number of electromagnets is small.

Therefore, the present invention provides a linear motor device and a sliding door device that can reduce the number of electromagnets.

A linear motor device according to an aspect of the present invention is a linear motor device that moves a moving object along a guide provided in a structure, and a plurality of permanent magnets attached to the structure along the guide. A plurality of electromagnets attached to the moving object along the guide, a driving circuit attached to the moving object and driving the plurality of electromagnets, attached to the structure, and non-moving to the driving circuit A non-contact power supply circuit that performs contact power supply.

A sliding door device according to an aspect of the present invention includes the linear motor device and a sliding door that is the moving object.

The linear motor device and the sliding door device according to one embodiment of the present invention can reduce the number of electromagnets.

FIG. 1 is an external perspective view of the linear motor device according to the first embodiment. FIG. 2 is a diagram illustrating an internal structure of the linear motor device according to the first embodiment. FIG. 3A is a first diagram for describing the outline of the operation of the linear motor device according to the first embodiment. FIG. 3B is a second diagram for illustrating the outline of the operation of the linear motor device according to the first embodiment. FIG. 4 is a block diagram illustrating a functional configuration of the linear motor device according to the first embodiment. FIG. 5 is a circuit diagram of a non-contact power feeding circuit and a driving circuit of the linear motor device according to the first embodiment. FIG. 6 is a schematic diagram illustrating a linear motor device according to a comparative example. FIG. 7 is a block diagram illustrating a functional configuration of the linear motor device according to the first modification. FIG. 8 is a diagram illustrating a non-contact power feeding circuit and a driving circuit of the linear motor device according to the first modification. FIG. 9 is a diagram illustrating a detailed configuration of the first control unit according to the first modification. FIG. 10 is a diagram illustrating a control signal generation method of the first control unit according to the first modification. FIG. 11 is a block diagram illustrating a functional configuration of the linear motor device according to the second modification. FIG. 12 is a diagram illustrating a non-contact power feeding circuit and a driving circuit of the linear motor device according to the second modification. FIG. 13 is a schematic diagram illustrating a schematic configuration of the linear motor device according to the third embodiment. FIG. 14 is a diagram illustrating an internal structure of the linear motor device according to the third embodiment. FIG. 15 is a diagram illustrating the structure of the main unit according to the third embodiment. FIG. 16 is a diagram illustrating the structure of the first attachment unit according to the third embodiment. FIG. 17 is a diagram illustrating a structure of the second attachment unit according to the third embodiment. FIG. 18 is a diagram illustrating a schematic configuration of the linear motor device according to the fourth embodiment. FIG. 19 is a schematic diagram illustrating a structure in the first housing of the linear motor device according to the fourth embodiment. FIG. 20 is a schematic diagram illustrating a structure inside the second housing. FIG. 21 is a diagram illustrating a three-dimensional structure in the second housing. FIG. 22 is a diagram illustrating a structure of a main unit according to the fourth embodiment. FIG. 23 is a diagram illustrating the structure of the second attachment unit according to the fourth embodiment.

Hereinafter, the linear motor device according to the embodiment will be described with reference to the drawings. It should be noted that each of the embodiments described below shows a comprehensive or specific example. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily shown strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, and the overlapping description may be abbreviate | omitted or simplified.

In the following embodiments, the ceiling side may be expressed as “upper” and the floor side may be expressed as “lower”.

(Embodiment 1)
[Configuration of linear motor device]
Hereinafter, the configuration of the linear motor device according to the first embodiment will be described with reference to the drawings. 1 and 2 are external perspective views of the linear motor device according to the first embodiment.

As shown in FIG. 1, the linear motor device 10 according to the first embodiment is a device that moves the sliding door 40 along the rail 30 provided in the upper frame 20 (Kamoi). The rail 30 is an example of a guide, and the sliding door 40 is an example of a moving object. In FIG. 2, illustration of the frame body of the upper frame 20 and the door body of the sliding door 40 is omitted to show the internal structure in detail.

The linear motor device 10 includes a plurality of permanent magnets 31, a plurality of electromagnets 41, a drive circuit 50, and a non-contact power supply circuit 60. Further, the linear motor device 10 includes a roller 42. The pickup coil 51 shown in FIGS. 1 and 2 is included in the drive circuit 50, and the line coil 65 is included in the non-contact power supply circuit 60.

1 and 2, the linear motor device 10 is built in the upper frame 20 and the sliding door 40. However, the linear motor device 10 is attached to the upper frame 20 and the sliding door 40 of an existing dwelling unit afterwards. May be realized as an external type device.

The rail 30 is an example of a guide, and is a rail extending along the moving direction of the sliding door 40 above the sliding door 40. The rail 30 is attached to the upper frame 20. Specifically, the rail 30 is composed of two long members, and the shaft body 43 is passed between the two long members. The rail 30 may be formed of metal such as stainless steel, or may be formed of resin.

The shaft body 43 is a member that integrally holds the pickup coil 51 and the roller 42 located above the rail 30 (on the ceiling side) and the drive circuit 50 located below the rail 30 (on the floor surface side). Attached to the sliding door 40. The shaft body 43 may be made of metal as long as it is formed in a size and length that do not adversely affect the performance of non-contact power feeding described later. In addition, the shaft body 43 may be formed of a resin if it is desired to design so as not to adversely affect the performance of the non-contact power feeding described later. An electrical wiring (for example, a lead wire) that electrically connects the pickup coil 51 and the drive circuit 50 is inserted into the shaft body 43.

The roller 42 is a wheel for smoothly moving the sliding door 40 with respect to the rail 30 and is attached to the sliding door 40.

The plurality of permanent magnets 31 are attached to the upper frame 20 along the rail 30 so that the N pole and the S pole are alternately arranged with a certain length. As the permanent magnet 31, for example, an alnico magnet, a ferrite magnet, or a neodymium magnet is adopted, but the magnetic material forming the permanent magnet 31 is not particularly limited. In the drawings, the N pole is described as “N”, and the S pole is described as “S”. In the following embodiments, one permanent magnet 31 has an N pole and an S pole. In other words, in the drawing, “N” and “S” constitute one permanent magnet 31. The number of permanent magnets 31 is not particularly limited.

The plurality of electromagnets 41 are attached to the sliding door 40 along the rail 30 (in FIG. 2, the plurality of electromagnets 41 are located in the upper frame 20 but are attached to the sliding door 40). More specifically, a branch material having a structure branched from the shaft body 43 is extended above the sliding door 40 (not shown), and a basket is formed at the end of the branch material (also this) (Not shown), all of the plurality of electromagnets 41 are placed on the cage (bag), and are movable on the rail 30 together with the shaft body 43, the roller 42, the pickup coil 51, and the like.

For these branch members (not shown) and baskets (not shown), for the same reason as described above with respect to the shaft body 43, it is desirable that the material is a resin if it does not want to affect non-contact power feeding, If it is determined at the time of design that the size does not affect the non-contact power feeding, the material may be metal in order to improve durability. All of the plurality of electromagnets 41 in a state of being placed on a basket (not shown) are arranged at positions facing a part of the plurality of permanent magnets 31.

1 and 2, the shape and arrangement of the electromagnet 41 are schematically illustrated, and the plurality of electromagnets 41 are actually electrically connected to the drive circuit 50. As long as the plurality of electromagnets 41 are attached to the sliding door 40, the electromagnets 41 may be arranged in any manner as long as the sliding door 40 can be opened and closed.

The arrangement interval between the electromagnets 41 in the moving direction of the sliding door 40 is appropriately set according to the arrangement interval of the plurality of permanent magnets 31. The arrangement interval of the plurality of electromagnets 41 is, for example, about half of one permanent magnet 31 (one of N and S poles), but is not particularly limited. In the first embodiment, the number of electromagnets 41 is three, but the number of electromagnets 41 is not limited to three.

Specifically, the electromagnet 41 is formed by winding an electric wire capable of controlling the amount of energization current around a core material made of a magnetic material. The core material is, for example, iron, and the electric wire is, for example, an enameled wire in which a copper core wire is insulated and coated with enamel, but the material used as the core material and the material used as the electric wire are not particularly limited. . Further, the shape of the core material is not particularly limited.

1 and 2 disclose an example in which three electromagnets 41 are arranged. However, the number of such electromagnets 41 is a number that is conscious of the three-phase motor control described in FIG.

However, the number of the electromagnets 41 should just be arrange | positioned in the range which only exceeds the length per one of the N pole or S pole of the permanent magnet 31 opposingly arranged, and if it is two or more, the linear motor apparatus 10 will be It is possible to operate. The number of electromagnets 41 may be four or more. However, increasing the number of electromagnets 41 increases the cost. For this reason, the number of electromagnets 41 is preferably as small as possible while taking into account the length of one of the N poles or S poles of the permanent magnet 31.

The non-contact power supply circuit 60 is a circuit that is attached to the upper frame 20 and performs non-contact power supply to the drive circuit 50. Specifically, the non-contact power supply circuit 60 includes a line type coil 65, and performs non-contact power supply to the drive circuit 50 through the line type coil 65. That is, the non-contact power supply circuit 60 performs electromagnetic induction type non-contact power supply using a coil. A specific circuit configuration of the non-contact power feeding circuit 60 will be described later.

The line-type coil 65 is an example of a power transmission unit, and transmits AC power to the drive circuit 50 in a contactless manner. The line-type coil 65 is a long annular coil that is long in the direction along the rail 30, and is disposed close to the pickup coil 51 so as not to contact the pickup coil 51. The line type coil 65 is arranged avoiding the plurality of permanent magnets 31 in order to reduce the influence of the magnetic field emitted from the plurality of permanent magnets 31. Specifically, the line type coil 65 is disposed at a position where it does not overlap with the plurality of permanent magnets 31 both in the vertical direction and in the horizontal direction. Thereby, the fall of the transmission efficiency of electric power can be suppressed.

The line type coil 65 is formed of, for example, an enameled wire in which a copper core wire is insulated and coated with enamel, but may be formed of other electric wires. In addition, the frequency of the alternating current power supplied to the line type coil 65 is about 100 kHz, for example.

The pickup coil 51 is an example of a power receiving unit, and receives AC power transmitted by the line coil 65. The pickup coil 51 is formed by winding an electric wire 51b around a coil bobbin 51a. The coil bobbin 51a is made of, for example, resin, and the electric wire 51b is, for example, an enameled wire in which a copper core wire is insulated and coated with enamel.

The pickup coil 51 is arranged so that the direction of the winding axis of the electric wire 51b intersects the longitudinal direction of the line coil 65 (direction in which the rail 30 extends) perpendicularly when viewed from above. With such an arrangement, the pickup coil 51 can receive AC power from the line coil 65 by electromagnetic induction.

Since the pickup coil 51 is attached to the sliding door 40 via the shaft body 43, the pickup coil 51 moves as the sliding door 40 moves. At this time, since the pickup coil 51 moves along the line type coil 65, power feeding is not interrupted by the movement of the sliding door 40.

The drive circuit 50 is attached to the sliding door 40 and drives the plurality of electromagnets 41 using electric power supplied from the non-contact power supply circuit 60. Specifically, the drive circuit 50 sequentially switches the polarities of the plurality of electromagnets 41. A specific configuration of the drive circuit 50 will be described later.

[Outline of operation of linear motor device]
An outline of the operation of the linear motor device 10 will be described. 3A and 3B are diagrams for explaining the outline of the operation of the linear motor device 10. 3A and 3B are schematic diagrams, and the positional relationship between the plurality of permanent magnets 31 and the plurality of electromagnets 41 is different from the positional relationship described in FIGS. 1 and 2.

As shown in FIG. 3A, first, the drive circuit 50 sets the polarity of each electromagnet 41 to the same polarity as the polarity of the permanent magnet 31 substantially facing the electromagnet 41. 3A, an attractive force is generated between the permanent magnet 31 and the electromagnet 41 having different polarities, and the sliding door 40 is moved by this attractive force.

Here, as shown in FIG. 3B, when the sliding door 40 moves to some extent, the drive circuit 50 switches the polarity of each electromagnet 41. Then, as indicated by an arrow in FIG. 3B, an attractive force is generated between the permanent magnet 31 and the electromagnet 41, and the movement of the sliding door 40 is continued.

The drive circuit 50 can move the sliding door 40 by repeating the switching of the polarity of the electromagnet 41.

The linear motor device 10 starts the above-described operation so as to assist the user in opening and closing the sliding door 40, for example, when the user starts to open the sliding door 40 or when the user starts to close the sliding door 40. . When the user starts to open the sliding door 40 or when the user starts to close the sliding door 40, for example, it is detected by a door sensor.

However, the linear motor device 10 may be provided with a human sensor, and when the human sensor detects a person, the sliding door 40 may be automatically opened and closed after a predetermined time has elapsed. That is, the linear motor device 10 may be applied to an automatic door.

In addition, in the example of FIG. 3A and FIG. 3B, it demonstrated so that the switching timing of the polarity of the several electromagnet 41 may be simultaneous for simplification. However, as will be described later, the polarity of the three electromagnets 41 is switched, for example, at a timing at which the phases are shifted by 120 degrees.

[Circuit configuration]
Next, specific circuit configurations of the non-contact power supply circuit 60 and the drive circuit 50 will be described with reference to a block diagram and a circuit diagram. FIG. 4 is a block diagram illustrating a functional configuration of the linear motor device 10. FIG. 5 is a circuit diagram of the non-contact power feeding circuit 60 and the drive circuit 50. In FIG. 4, the upper frame 20, the sliding door 40, and the plurality of permanent magnets 31 are also schematically illustrated.

First, the non-contact power feeding circuit 60 provided on the upper frame 20 will be described. As shown in FIGS. 4 and 5, the contactless power feeding circuit 60 includes a first AC-DC conversion circuit 61, a first DC-DC conversion circuit 62, a first inverter circuit 63, A control unit 64 and a line type coil 65 are provided. 4 and 5 also show an AC power supply 70 that supplies AC power to the non-contact power supply circuit 60. The AC power source 70 is, for example, a commercial system (power system), and the AC power obtained from the AC power source 70 has a frequency of 50 Hz or 60 Hz and an effective value of 100V.

The first AC-DC conversion circuit 61 converts AC power obtained from the AC power source 70 into DC power and outputs it. The first AC-DC conversion circuit 61 includes a bridge-type full-wave rectifier circuit composed of four diodes that full-wave rectifies AC power and outputs a DC voltage, and a smoother that smoothes the power rectified by the rectifier circuit. It consists of a capacitor. The specific configuration of the first AC-DC conversion circuit 61 is not limited to such a configuration, and any circuit may be used as long as AC power can be converted into DC power.

The first DC-DC conversion circuit 62 converts the DC power output from the first AC-DC conversion circuit 61 into DC power suitable for the first inverter circuit 63 and outputs the DC power. The first DC-DC conversion circuit 62 is a chopping type that steps down the DC power output from the first AC-DC conversion circuit 61 when the transistor S0 is turned on and off at high speed by the first controller 64. DC-DC converter.

The specific configuration of the first DC-DC conversion circuit 62 is not limited to such a configuration, and the DC power output from the first AC-DC conversion circuit 61 is supplied to the first inverter circuit 63. Any circuit may be used as long as it can be converted into suitable DC power. The first DC-DC conversion circuit 62 may be omitted if it is not necessary to convert the DC power output from the first AC-DC conversion circuit 61.

The first inverter circuit 63 further converts the DC power output from the first AC-DC conversion circuit 61 and converted by the first DC-DC conversion circuit 62 into AC power and outputs the AC power. The first inverter circuit 63 is a half-bridge type inverter circuit in which the transistor S1 and the transistor S2 are alternately turned on and off by the first control unit 64, but may be a full-bridge type inverter circuit. It is not limited.

The first control unit 64 is a control unit that outputs a control signal for turning on and off the transistor S0, the transistor S1, and the transistor S2. The first control unit 64 is realized by a processor, a microcomputer, a dedicated circuit, or the like.

The line type coil 65 transmits the AC power output from the first inverter circuit 63 to the drive circuit 50 in a contactless manner. The capacitor 66 is inserted in order to adjust the resonance frequency of the line coil 65 and the pickup coil 51 and increase the power utilization efficiency, and may be omitted if not necessary.

Next, the drive circuit 50 will be described. The drive circuit 50 includes a pickup coil 51, a second AC-DC conversion circuit 52, a second DC-DC conversion circuit 53, a second inverter circuit 54, and a second control unit 55.

The pickup coil 51 receives AC power transmitted by the line coil 65. The capacitor 56 is inserted in order to adjust the resonance frequency of the line coil 65 and the pickup coil 51 and increase the power use efficiency, and may be omitted if not necessary.

The second AC-DC conversion circuit 52 converts AC power received by the pickup coil 51 into DC power. The second AC-DC conversion circuit 52 includes a bridge-type full-wave rectifier circuit composed of four diodes that full-wave rectifies AC power and outputs a DC voltage, and a smoother that smoothes the power rectified by the rectifier circuit. It consists of a capacitor. The specific configuration of the second AC-DC conversion circuit 52 is not limited to such a configuration, and any circuit may be used as long as AC power can be converted into DC power.

The second DC-DC conversion circuit 53 converts the DC power output from the second AC-DC conversion circuit 52 into DC power suitable for the second inverter circuit 54 and outputs the DC power. The second DC-DC conversion circuit 53 is a chopping type that reduces the DC power output from the second AC-DC conversion circuit 52 when the transistor is turned on and off at high speed by the second control unit 55. It is a DC-DC converter.

The specific configuration of the second DC-DC conversion circuit 53 is not limited to such a configuration, and the DC power output from the second DC-DC conversion circuit 53 is supplied to the second inverter circuit 54. Any circuit may be used as long as it can be converted into suitable DC power. Further, the second DC-DC conversion circuit 53 may be omitted when it is not necessary to convert the DC power output from the second DC-DC conversion circuit 53.

The second inverter circuit 54 converts the direct current power converted by the second AC-DC conversion circuit 52 and converted by the second DC-DC conversion circuit 53 into alternating current power. The converted AC power is supplied to the plurality of electromagnets 41. The second inverter circuit 54 is a three-phase inverter circuit that outputs AC power whose phase is shifted by 120 degrees, but is not particularly limited. Each of the three AC powers output from the second inverter circuit 54 is applied to the corresponding one electromagnet 41.

The second inverter circuit 54 includes three high-side switches (transistors) and three low-side switches (transistors). The low-side switch paired with one high-side switch includes the one high-side switch (transistor). A control signal whose phase is inverted from that of the control signal applied to the side switch is applied. In addition, a control signal whose phase is shifted by 120 degrees is applied to each of the three high-side switches. The same applies to the three low-side switches.

The second control unit 55 is a control for turning on and off the three high-side switches and the three low-side switches included in the second DC-DC conversion circuit 53 and the second inverter circuit 54. It is a control part which outputs a signal. The second control unit 55 is realized by a processor, a microcomputer, a dedicated circuit, or the like.

[Effects]
Hereinafter, effects obtained by the linear motor device 10 will be described with reference to a comparative example. FIG. 6 is a schematic diagram illustrating a linear motor device according to a comparative example.

The linear motor device 100 according to the comparative example shown in FIG. 6 includes a plurality of electromagnets 41 attached to the upper frame 120 and a plurality of permanent magnets 31 attached to the sliding door 140.

Here, in the linear motor device 100, the upper frame 120 has a wide range (for example, shown in FIG. 6) so that the sliding door 140 can be moved at any position within the movable range. It is necessary to arrange the electromagnet 41 in the range A). Therefore, in the linear motor device 100, since the number of electromagnets 41 increases, an increase in the scale of a drive circuit that drives the electromagnets 41 and an increase in component costs are problems.

In contrast, the linear motor device 10 moves the sliding door 40 along the rail 30 provided on the upper frame 20. The upper frame 20 is an example of a structure, the rail 30 is an example of a guide, and the sliding door 40 is an example of a moving object. The linear motor device 10 includes a plurality of permanent magnets 31 attached to the upper frame 20 along the rail 30, a plurality of electromagnets 41 attached to the sliding door 40 along the rail 30, and a plurality of electromagnets 41 attached to the sliding door 40. And a non-contact power supply circuit 60 that is attached to the upper frame and performs non-contact power supply to the drive circuit 50.

That is, in the linear motor device 10, the plurality of permanent magnets 31 are attached to the upper frame 20, and the plurality of electromagnets 41 are attached to the sliding door 40. When a plurality of permanent magnets 31 are attached to the sliding door 40, a large number of the plurality of permanent magnets 31 cannot be arranged beyond the width of the sliding door 40. On the other hand, when the plurality of permanent magnets 31 are attached to the upper frame 20, a large number of the plurality of permanent magnets 31 can be arranged over a wide range beyond the width of the sliding door 40. Therefore, if the number of the plurality of permanent magnets 31 is increased and disposed in the upper frame 20 in a wide range, the number of electromagnets 41 used in the linear motor device 10 can be reduced.

Generally, the permanent magnet 31 has a lower component cost than the electromagnet 41. Accordingly, the number of electromagnets 41 used in the linear motor device 10 is reduced, so that the component cost can be reduced.

Further, since the permanent magnet 31 does not require a drive circuit, the circuit scale (control cost) in the linear motor device 10 can be reduced by reducing the number of electromagnets 41 used in the linear motor device 10.

In addition, when the electromagnet 41 is attached to the sliding door 40, it is difficult to place the power source of the electromagnet 41 on the sliding door 40 because the sliding door 40 moves. On the other hand, in the linear motor device 10, this problem is solved by performing non-contact power feeding from the upper frame 20 side to the sliding door 40 side.

The non-contact power supply circuit 60 converts the AC power obtained from the AC power source into DC power and outputs the DC power, and the DC output from the first AC-DC conversion circuit 61. It has the 1st inverter circuit 63 which converts electric power into alternating current power, and outputs it, and the line type coil 65 which transmits the alternating current power output from the 1st inverter circuit 63 to the drive circuit 50 non-contactingly. The drive circuit 50 also includes a pickup coil 51 that receives AC power transmitted by the line coil 65, and a second AC-DC conversion circuit 52 that converts AC power received by the pickup coil 51 into DC power. And a second inverter circuit 54 that converts the DC power converted by the second AC-DC conversion circuit 52 into AC power, and supplies the converted AC power to the plurality of electromagnets 41.

With such a circuit configuration, the linear motor device 10 can drive the electromagnet 41.

Further, the line type coil 65 is an example of a power transmission unit, and the pickup coil 51 is an example of a power reception unit. In other words, the power transmission unit includes a line-type coil 65 (a coil extending along the rail 30) extending along the rail 30, and the power reception unit is a coil (pickup coil) that receives supply of AC power from the line-type coil 65. ) May be included.

Thereby, the non-contact power feeding circuit 60 of the linear motor device 10 can perform non-contact power feeding by an electromagnetic induction method. In addition, since the line-type coil 65 extends along the rail 30, power feeding is not interrupted even when the sliding door 40 moves along the rail 30.

The non-contact power supply circuit 60 may perform non-contact power supply by an electromagnetic resonance method using an electromagnetic resonance coupler (electromagnetic resonance coupler), or convert electric power into electromagnetic waves and transmit / receive via an antenna. You may perform non-contact electric power feeding by a radio wave system. That is, each of the power transmission unit and the power reception unit may be an electromagnetic resonance coupler or an antenna.

Further, in the linear motor device 10, the number of the plurality of electromagnets 41 may be smaller than the number of the plurality of permanent magnets 31.

Thereby, the effect of reducing the above-mentioned component cost and the effect of reducing the circuit scale can be obtained.

Further, as described above, the sliding door 40 is an example of a moving object, and the upper frame 20 is an example of a structure. In other words, the moving object may be the sliding door 40, and the structure may be the upper frame 20 of the sliding door 40.

Thereby, the linear motor device 10 can move the sliding door 40 with respect to the upper frame 20. The moving object may be a moving object provided indoors (indoors) such as windows, curtains, and blinds, or may be a moving object provided outdoors such as an outdoor shutter. .

In addition, the rail 30 which is an example of the guide may be partially or entirely curved. That is, the linear motor device 10 can not only move the moving object straight but also make it curve.

(Embodiment 2)
In the second embodiment, a modified example of a linear motor device having different configurations of the contactless power feeding circuit and the drive circuit will be described. In the second embodiment, components that are substantially the same as the components described in the first embodiment are given the same reference numerals, and detailed descriptions thereof are omitted.

[Modification 1]
First, a linear motor device according to Modification 1 will be described with reference to FIGS. FIG. 7 is a block diagram illustrating a functional configuration of the linear motor device according to the first modification. FIG. 8 is a circuit diagram of a non-contact power feeding circuit and a driving circuit of the linear motor device according to the first modification.

As shown in FIG. 7, the linear motor device 110 according to Modification 1 includes a plurality of permanent magnets 31, a plurality of electromagnets 41, a drive circuit 150, and a non-contact power supply circuit 160. The plurality of permanent magnets 31 and the non-contact power supply circuit 160 are attached to the upper frame 20, and the plurality of electromagnets 41 and the drive circuit 150 are attached to the sliding door 40.

First, the non-contact power feeding circuit 160 will be described. 7 and 8, the non-contact power feeding circuit 160 includes a first AC-DC conversion circuit 61, a three-phase inverter circuit 163, a first control unit 164, three line coils 65, and the like. Is provided. The three line coils 65 correspond to the three outputs of the three-phase inverter circuit 163 on a one-to-one basis. The three line coils 65 are an example of a power transmission unit.

The three-phase inverter circuit 163 converts the DC power output from the first AC-DC conversion circuit 61 into AC power and outputs the AC power. Specifically, the three-phase inverter circuit 163 is a PWM (Pulse Width Modulation) in which the DC power output from the first AC-DC conversion circuit 61 is pulse-width modulated in accordance with a predetermined voltage waveform. ) Convert to signal and output. The predetermined voltage waveform is, for example, a sine wave, but may be another voltage waveform as long as it is a voltage waveform for driving the electromagnet 41. A more detailed operation of the three-phase inverter circuit 163 will be described later.

The first control unit 164 outputs control signals for turning on and off the three high-side switches and the three low-side switches included in the three-phase inverter circuit 163. Here, a method of generating the control signal of the first control unit 164 will be described with reference to FIGS. FIG. 9 is a diagram illustrating a detailed configuration of the first control unit 164. FIG. 10 is a diagram illustrating a method for generating a control signal by the first control unit 164.

As shown in FIG. 9, the first control unit 164 includes a signal output unit 164a, a comparator 164b, and an inverter 164c. Here, the inverter means not an inverter circuit as described above but an inverter that inverts logic.

The signal output unit 164a outputs a sine wave and a triangular wave having a shorter cycle than the sine wave. A sine wave is an example of a predetermined voltage waveform. Here, the sine wave output from the signal output unit 164a and the triangular wave output from the signal output unit 164a have the same peak-to-peak value of the signal level.

The comparator 164b compares the signal levels of the sine wave and the triangular wave. As shown in FIG. 10, for example, when the signal level of the triangular wave 82 is larger than the signal level of the sine wave 81, the comparator 164 b outputs a high level as the control signal 83 and the signal level of the triangular wave 82 is the sine wave 81. When the signal level is equal to or lower than the signal level, a low level is output as the control signal 83.

The control signal 83 output from the comparator 164b is directly used as a first control signal for controlling the high-side switch of the three-phase inverter circuit 163. The signal output from the comparator 164b is inverted by the inverter 164c and used as the second control signal for controlling the low-side switch of the three-phase inverter circuit 163.

Although not shown in FIG. 9, a set of a first control signal and a second control signal (hereinafter referred to as a set of control signals) is supplied from the first control unit 164 as shown in FIG. Three sets are output. These three sets of control signals are out of phase by 120 degrees.

In the three-phase inverter circuit 163, one set of high-side switch and low-side switch is controlled by one set of control signals. That is, a set of the first control signal and the second control signal having different phases is applied to each of the three sets of the high-side switch and the low-side switch. As a result, PWM signals having different phases are output from the three-phase inverter circuit 163 to each of the three line coils 65.

As described above, the three-phase inverter circuit 163 converts the DC power output from the first AC-DC conversion circuit 61 into three PWM signals having different phases and outputs the PWM signals. In other words, the three-phase inverter circuit 163 outputs the DC power output from the first AC-DC conversion circuit 61 by performing pulse width modulation according to the sine wave. The three line coils 65 transmit the three PWM signals output from the three-phase inverter circuit 163 to the drive circuit 150 in a contactless manner.

Next, the drive circuit 150 will be described. As shown in FIGS. 7 and 8, the drive circuit 150 includes three pickup coils 51, a filter circuit 151, and three electromagnets 41. The three pickup coils 51 are an example of a power receiving unit.

The three pickup coils 51 correspond to the three line coils 65 on a one-to-one basis. One pickup coil 51 receives AC power transmitted by one line coil 65. More specifically, one pickup coil 51 receives a PWM signal transmitted by one line coil.

The filter circuit 151 filters the AC power received by the pickup coil 51 and applies it to the electromagnet 41. The filter circuit 151 is specifically an LC filter, but may be another filter circuit. The filter circuit 151 applies AC power having a predetermined voltage waveform to the three electromagnets 41 by filtering the PWM signals received by the three pickup coils 51.

In other words, the filter circuit 151 gives the electromagnet 41 a sine wave obtained by demodulating the PWM signal. At this time, the three electromagnets 41 are respectively provided with sine waves whose phases are shifted by 120 degrees (for example, sine waves whose phases are 0 °, 120 °, and 240 °).

As described above, the three pickup coils 51 receive the three PWM signals transmitted by the three line type coils 65. The filter circuit 151 filters the three PWM signals received by the three pickup coils 51, thereby converting the three AC powers having different phases from each other into three AC magnets each having a predetermined voltage waveform. 41.

Although the structure of the linear motor device 110 according to the modified example 1 is not shown, the linear motor device 110 includes three sets of the line coil 65 and the pickup coil 51 shown in FIGS. 1 and 2. Structure. Other structures are almost the same as those of the linear motor device 10 shown in FIGS.

[Effects of Modification 1]
The linear motor device 110 according to the first modification includes a non-contact power supply circuit 160 and a drive circuit 150. The non-contact power supply circuit 160 converts the AC power obtained from the AC power supply 70 into DC power and outputs the DC power, and the DC power output from the first AC-DC conversion circuit 61. Has a three-phase inverter circuit 163 that converts AC power into AC power and outputs it, and a power transmission unit that transmits AC power output from the three-phase inverter circuit 163 to the drive circuit in a contactless manner. Specifically, the power transmission unit is three line coils 65.

The drive circuit 150 includes a power receiving unit that receives AC power transmitted by the power transmitting unit, and a filter circuit 151 that filters the AC power received by the power receiving unit and applies the AC power to the plurality of electromagnets 41. Specifically, the power reception unit is three pickup coils 51, and the filter circuit 151 specifically includes an LC filter.

According to the circuit configuration as described above, only the filter circuit 151 and the three pickup coils are provided in the sliding door 40, and the circuit configuration on the sliding door 40 side can be simplified. When the linear motor device 110 is applied to the sliding door 40 of an existing house, when the circuit configuration on the side of the moving sliding door 40 is simplified, the drive circuit 50 is accommodated in the space for the doorwheel of the sliding door 40. Becomes easy. That is, the drive circuit 50 can be easily incorporated into the sliding door 40, and if the drive circuit 50 can be accommodated in the space, the processing of the sliding door 40 can be minimized. In addition, there is an advantage that a member attached to the sliding door 40 can be reduced in weight.

Specifically, the three-phase inverter circuit 163 converts the DC power output from the first AC-DC conversion circuit 61 into a PWM signal that is pulse-width modulated in accordance with a predetermined voltage waveform, and outputs the PWM signal. More specifically, the three-phase inverter circuit 163 converts the DC power output from the first AC-DC conversion circuit 61 into three PWM signals having different phases and outputs the PWM signals.

Specifically, the power transmission unit transmits the PWM signal output from the three-phase inverter circuit 163 to the drive circuit in a contactless manner. More specifically, the power transmission unit transmits the three PWM signals output from the three-phase inverter circuit 163 to the drive circuit 50 in a contactless manner.

Specifically, the power reception unit receives the PWM signal transmitted by the power transmission unit. More specifically, the power reception unit receives three PWM signals transmitted by the power transmission unit.

Specifically, the filter circuit 151 applies AC power having a predetermined voltage waveform to the plurality of electromagnets 41 by filtering the PWM signal received by the power receiving unit. More specifically, the filter circuit 151 filters the three PWM signals received by the power receiving unit to generate three AC powers having different phases, each having a predetermined voltage waveform. Are provided to a plurality of electromagnets 41.

According to such a circuit configuration, the linear motor device 110 can apply AC power having a predetermined voltage waveform to each of the plurality of electromagnets 41 using the PWM signal.

[Modification 2]
Next, a linear motor device according to Modification 2 will be described with reference to FIGS. 11 and 12. FIG. 11 is a block diagram illustrating a functional configuration of the linear motor device according to the second modification. FIG. 12 is a circuit diagram of a non-contact power feeding circuit and a driving circuit of the linear motor device according to the second modification.

As shown in FIG. 11, the linear motor device 210 according to Modification 1 includes a plurality of permanent magnets 31, a plurality of electromagnets 41, a drive circuit 250, and a non-contact power supply circuit 260. The plurality of permanent magnets 31 and the non-contact power supply circuit 260 are attached to the upper frame 20, and the plurality of electromagnets 41 and the drive circuit 250 are attached to the sliding door 40.

First, the non-contact power feeding circuit 260 will be described. As shown in FIGS. 11 and 12, the non-contact power feeding circuit 260 includes a first AC-DC conversion circuit 61, a first DC-DC conversion circuit 62, a two-phase inverter circuit 263, and a first control. A unit 264 and two line coils 65 are provided. The two line coils 65 correspond one-to-one to the two outputs of the two-phase inverter circuit 263. The two line coils 65 are an example of a power transmission unit.

The two-phase inverter circuit 263 further converts the DC power output from the first AC-DC conversion circuit 61 and converted by the first DC-DC conversion circuit 62 into AC power and outputs the AC power. Specifically, the two-phase inverter circuit 263 converts the DC power output from the first DC-DC conversion circuit 62 into a PWM signal in which the DC power is pulse-width modulated in accordance with a predetermined voltage waveform. Output. The predetermined voltage waveform is, for example, a sine wave, but may be another voltage waveform as long as it is a voltage waveform for driving the electromagnet 41. When the first DC-DC conversion circuit 62 is omitted, the two-phase inverter circuit 263 converts the DC power output from the first AC-DC conversion circuit 61 into AC power and outputs the AC power. A more detailed operation of the two-phase inverter circuit 263 will be described later.

The first control unit 264 outputs control signals for turning on and off the two high-side switches and the two low-side switches included in the two-phase inverter circuit 263. Here, the control signal generation method of the first control unit 264 is almost the same as the control signal generation method of the first control unit 164 described with reference to FIGS. 9 and 10. From the first control unit 264, a set of a first control signal for controlling the high-side switch and a second control signal for controlling the low-side switch (hereinafter referred to as a set of control signals), Two sets are output. These two sets of control signals are 90 degrees out of phase.

In the two-phase inverter circuit 263, one set of high-side switch and low-side switch is controlled by one set of control signals. That is, a set of the first control signal and the second control signal having different phases is applied to each of the two sets of the high-side switch and the low-side switch.

As a result, PWM signals having different phases are output from the two-phase inverter circuit 263 to each of the two line type coils 65.

As described above, the two-phase inverter circuit 263 converts the DC power output from the first AC-DC conversion circuit 61 into two PWM signals having different phases and outputs the PWM signal. In other words, the two-phase inverter circuit 263 performs pulse width modulation on the DC power output from the first AC-DC conversion circuit 61 and converted by the first DC-DC conversion circuit 62 in accordance with the sine wave. And output. The two line-type coils 65 transmit the two PWM signals output from the two-phase inverter circuit 263 to the drive circuit 250 in a contactless manner.

Next, the drive circuit 250 will be described. As shown in FIGS. 11 and 12, the drive circuit 250 includes two pickup coils 51, a filter circuit 251, and three electromagnets 41. The two pickup coils 51 are an example of a power reception unit.

The two pickup coils 51 correspond to the two line coils 65 on a one-to-one basis. One pickup coil 51 receives AC power transmitted by one line coil 65. More specifically, one pickup coil 51 receives a PWM signal transmitted by one line coil.

The filter circuit 251 filters the AC power received by the pickup coil 51 and gives it to the electromagnet 41. The filter circuit 251 is specifically an LC filter, but may be another filter circuit.

The filter circuit 251 applies two AC powers having a predetermined voltage waveform to the three electromagnets 41 by filtering the PWM signals received by the two pickup coils 51. More specifically, two electromagnets 41 are connected to one output terminal of the two output terminals of the filter circuit 251 so that the polarities are opposite to each other, and the other of the two output terminals of the filter circuit 251 is the other one. One electromagnet 41 is connected to the output terminal. In other words, at least one of the two AC powers output from the filter circuit 251 is shared by the two electromagnets 41 included in the plurality of electromagnets 41.

Thereby, a sine wave having a phase of 0 ° is given to the two electromagnets 41 connected to the one output terminal, but one electromagnet 41 of the two electromagnets 41 is connected to have opposite polarities. Therefore, the electromagnet 41 is equivalent to a sine wave having a phase of 180 °. On the other hand, a sine wave having a phase of 90 ° is given to the electromagnet 41 connected to the other output terminal. As described above, the linear motor device 210 can drive the electromagnets 41 for three phases although the two-phase inverter circuit 263 is used.

As described above, the two pickup coils 51 receive the two PWM signals transmitted by the two line coils 65. The filter circuit 251 filters the three PWM signals received by the two pickup coils 51, thereby converting two AC powers having different phases from each other into three AC magnets each having a predetermined voltage waveform. 41. At least one of the two AC powers output from the filter circuit 251 is shared by the two electromagnets 41 included in the plurality of electromagnets 41.

Although the structure of the linear motor device 210 according to the modified example 2 is not shown, the linear motor device 210 is provided with two sets of the line coil 65 and the pickup coil 51 shown in FIGS. 1 and 2. Structure. Other structures are almost the same as those of the linear motor device 10 shown in FIGS.

[Effects of Modification 2]
The linear motor device 210 according to the second modification includes a non-contact power feeding circuit 260 and a drive circuit 250. The two-phase inverter circuit 263 included in the non-contact power feeding circuit 260 converts the DC power output from the first AC-DC conversion circuit 61 into two PWM signals having different phases and outputs the PWM signals. The power transmission unit transmits the two PWM signals output from the two-phase inverter circuit 263 to the drive circuit 250 in a contactless manner. The power reception unit receives the two PWM signals transmitted by the power transmission unit. The filter circuit 251 filters the two PWM signals received by the power receiving unit so that two AC powers having different phases from each other and each having a predetermined voltage waveform are applied to the plurality of electromagnets 41. give. At least one of the two AC powers is shared by the two electromagnets included in the plurality of electromagnets 41.

Thereby, the circuit scale of the filter circuit 251 can be further simplified as compared with the filter circuit 151. Therefore, when the linear motor device 210 is applied to the sliding door 40 of an existing house, it becomes easier to accommodate the drive circuit 50 in the space for the doorwheel of the sliding door 40. That is, the drive circuit 50 can be more easily incorporated into the sliding door 40, and the processing of the sliding door 40 can be minimized. In addition, there is an advantage that a member attached to the sliding door 40 can be reduced in weight.

Further, by using the two-phase inverter circuit 263, the number of switching elements (transistors) can be reduced as compared with the three-phase inverter circuit 163. Similarly, the number of line coils 65 and pickup coils 51 can be reduced as compared with the linear motor device 110. For this reason, component cost can be reduced.

Note that Modification 1 and Modification 2 may be combined, and in the filter circuit 151 of Modification 1, two electromagnets 41 may be connected to one output terminal so that their polarities are opposite to each other.

(Embodiment 3)
[Schematic configuration]
It is desirable that the linear motor device for sliding doors has improved versatility so that it can be used for a plurality of sliding doors having different sizes. In Embodiment 3, a linear motor device with improved versatility will be described. In the third embodiment, components that are substantially the same as the components described in the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and differences such as arrangement are mainly described. Explanation is given. FIG. 13 is a schematic diagram illustrating a schematic configuration of the linear motor device according to the third embodiment. FIG. 14 is a diagram illustrating an internal structure of the linear motor device according to the third embodiment. In the following third embodiment, the moving direction of the sliding door 40 described in the first and second embodiments is also referred to as a predetermined direction.

13 and 14, the linear motor device 300 according to the third embodiment includes a first mounting unit 301, a second mounting unit 302 (shown in FIG. 13), and a main body unit 303. In FIG. 14, the casing 350 shown in FIG. 13 is not shown.

The linear motor device 300 is a device that moves the sliding door 40 along the rail 30 extending in a predetermined direction. The sliding door 40 is a so-called upper suspension type sliding door, and is suspended from the rail 30 (upper frame 20) when the first roller 321 and the second roller 322 are hooked on the rail 30.

[Main unit]
First, the main unit 303 will be described with reference to FIG. 15 in addition to FIGS. FIG. 15 is a diagram showing the structure of the main unit.

As shown in FIG. 15, the main unit 303 includes a rail 30, a plurality of permanent magnets 31, a non-contact power feeding circuit 60, and a casing 350 (shown in FIG. 13). The non-contact power supply circuit 60 includes a line type coil 65.

The housing 350 is a housing that houses the rail 30, the plurality of permanent magnets 31, and the non-contact power feeding circuit 60 and is attached to a structure such as the upper frame 20 positioned above the sliding door 40. The housing 350 may be built in the upper frame 20. In the completed state of the linear motor device 300, a part of the first attachment unit 301 (the first roller 321, the drive circuit 50 (pickup coil 51), the plurality of electromagnets 41), and a part of the second attachment unit 302. The (second roller 322) is also accommodated in the casing 350.

The housing 350 has a substantially rectangular parallelepiped shape that is long in a predetermined direction. Although not shown, a slit long in a predetermined direction is provided on the lower surface (bottom plate) of the casing 350 in order to move the first mounting unit 301 and the second mounting unit 302 in a predetermined direction.

The casing 350 is specifically formed of a metal such as aluminum, but may be formed of resin. When the casing 350 is formed of metal, the casing 350 also functions as a magnetic shield.

Inside the case 350, a spacer 360 (shown in FIG. 13) is provided between the non-contact power supply circuit 60 and the plurality of permanent magnets 31. The spacer 360 is a structural component for fixing the line coil 65 and is a plate-like member for determining the positions (boundaries) of the plurality of permanent magnets 31 and the non-contact power supply circuit 60. The spacer 360 may be made of resin or metal. Note that the spacer 360 may be integrally formed with the housing 350.

The rail 30 is a rail provided on the upper surface of the bottom plate of the housing 350 and extending in a predetermined direction. In the third embodiment, two rails 30 are provided. A shaft body 343a and a shaft body 343b are passed between the two rails. The upper surface of the rail 30 is a traveling surface, and the first roller 321 and the second roller 322 roll the traveling surface in a predetermined direction. The rail 30 may be formed as a part of the housing 350. For example, the bottom plate of the housing 350 may be used as the rail 30.

For example, the plurality of permanent magnets 31 are alternately arranged on the top plate side in the casing 350, with N poles and S poles having a predetermined length along a predetermined direction. The plurality of permanent magnets 31 are arranged in a predetermined direction on the upper frame 20 by the body unit 303 being built in or externally attached to the upper frame 20. The plurality of permanent magnets 31 need only be provided at the central portion in the predetermined direction in the casing 350, and may not be provided at the end in the predetermined direction.

The non-contact power supply circuit 60 is a circuit that is arranged at an end in a predetermined direction in the housing 350 and performs non-contact power supply to the drive circuit 50 included in the first attachment unit 301. The non-contact power feeding circuit 60 is arranged on the upper frame 20 by the main unit 303 being built in or externally attached to the upper frame 20 (not shown in FIGS. 13 to 15). As shown in FIG. 14 and FIG. 15, the non-contact power feeding circuit 60 may be disposed on the upper surface of the rail 30, but the first roller 321 or the second roller 322 is not obstructed so as not to interfere with traveling of the first roller 321. It may be disposed above 321 and the second roller 322 and may be held by a part of the housing 350 or the like.

Specifically, the non-contact power supply circuit 60 includes a line type coil 65 and performs non-contact power supply to the drive circuit 50 through the line type coil 65. Between the loops of the line type coil 65 (in the loop), only the pickup coil 51 is disposed, and the drive circuit 50 and the electromagnet 41 are not disposed. Thereby, the influence which the magnetic field (magnetic field) produced between the loops of the line type coil 65 has on the drive circuit 50 and the electromagnet 41 can be reduced. The specific circuit configuration of the non-contact power feeding circuit 60 is as described in the first embodiment. In the linear motor device 300, a non-contact power supply circuit 160 or a non-contact power supply circuit 260 may be used instead of the non-contact power supply circuit 60.

[First mounting unit]
Next, the first attachment unit 301 will be described with reference to FIG. 16 in addition to FIGS. 13 and 14. FIG. 16 is a view showing the structure of the first attachment unit 301.

The first attachment unit 301 is a unit for attaching the sliding door 40 to the linear motor device 300, and is a unit used as a pair with the second attachment unit 302. The first attachment unit 301 is attached to one end of the sliding door 40 in a predetermined direction. Specifically, the first attachment unit 301 is attached to an upper corner portion at one end of the sliding door 40. The first attachment unit 301 includes a first attachment member 311, a first roller 321, a bearing portion 321 a, a drive circuit 50, a plurality of electromagnets 41, a shaft body 343 a, and a connection member 330. Further, the drive circuit 50 includes a pickup coil 51.

The first attachment member 311 is a substantially rectangular parallelepiped member having a curved lower surface. The first attachment member 311 may be formed of resin or may be formed of metal. Further, there may be a space inside the first attachment member 311.

The first attachment unit 301 is attached to one end portion of the sliding door 40 by fitting the first attachment member 311 into the first recess 341 provided at one end portion of the sliding door 40. More specifically, the first concave portion 341 is provided at a corner portion located at the upper side at one end portion of the sliding door 40. For example, the first attachment member 311 fits into the first recess 341 by slide insertion in a predetermined direction, but may fit into the first recess 341 by slide insertion downward.

Although not shown in detail, the first mounting member 311 has a retaining structure such as a claw, for example, and the first retaining member 311 is fitted in the first recess 341 by the retaining structure. Maintained. The first attachment member 311 may be bonded in a state of being fitted in the first recess 341, or may be screwed in a state of being fitted in the first recess 341.

The first roller 321 is a wheel for hooking the sliding door 40 on the rail 30 and moving the sliding door 40 smoothly with respect to the rail 30 and rolls the running surface of the rail 30 in a predetermined direction. The first roller 321 may be formed of resin or may be formed of metal.

The rotation shaft of the first roller 321 is rotatably supported by the bearing portion 321a. In Embodiment 3, the first attachment unit 301 includes a plurality of first rollers 321, but it is sufficient that at least one first roller 321 is provided.

The shaft body 343a is a member for connecting and holding the first attachment member 311 and the first roller 321 integrally. The shaft body 343a may be formed of resin or may be formed of metal.

The first attachment member 311 is connected to one end of the shaft body 343a, and the first roller 321 is connected to the other end of the shaft body 343a. The shaft body 343 a passes between the two rails 30. The first roller 321 is located above the rail 30 (ceiling side), and the first attachment member 311 is located below the rail 30 (floor surface side).

The connection member 330 is a plate-like member having a rectangular shape in plan view, and integrally holds the first roller 321, the bearing portion 321 a, the drive circuit 50 (pickup coil 51), and the plurality of electromagnets 41. It is a member. The connecting member 330 may be formed of resin or may be formed of metal.

The connecting member 330 is arranged such that one main surface (lower surface) faces the rail 30 and the longitudinal direction is along a predetermined direction. On the other main surface (upper surface) of the connecting member 330, a plurality of electromagnets 41 and a drive circuit 50 (more specifically, the drive circuit 50 excluding the pickup coil 51) are arranged side by side in a predetermined direction. On the other main surface of the connection member 330, the drive circuit 50 is disposed closer to the first roller 321 (bearing portion 321 a) than the plurality of electromagnets 41. The plurality of electromagnets 41 are arranged in a predetermined direction on the upper surface of the connection member 330.

The bearing portion 321a of the first roller 321 is connected to a side surface (end surface) located at one end in the longitudinal direction of the connection member 330. A coil bobbin 51a of the pickup coil 51 is connected to a side surface (end surface) located at one end of the connecting member 330 in the short direction. Note that another roller (bearing portion of another roller) may be further connected to the side surface (end surface) located at the other end in the longitudinal direction of the connection member 330.

Note that the shaft body 343a and the connection member 330 are examples, and other members in order to integrally hold the first attachment member 311, the first roller 321, the drive circuit 50, and the plurality of electromagnets 41 may be used. May be used.

The plurality of electromagnets 41 are arranged along a predetermined direction on the upper surface of the connection member 330 in order to move the sliding door 40 using the magnetic force of the plurality of permanent magnets 31. As in the first embodiment, the number of electromagnets 41 is not particularly limited. Further, the electromagnet 41 may be arranged in any way as long as the sliding door 40 can be opened and closed.

The drive circuit 50 drives the plurality of electromagnets 41 using the power supplied from the non-contact power supply circuit 60. Specifically, the drive circuit 50 includes a pickup coil 51, and sequentially switches the polarities of the plurality of electromagnets 41 using electric power obtained through the pickup coil 51. The specific configuration of the drive circuit 50 is as described in the first embodiment. In the linear motor device 300, the drive circuit 150 or the drive circuit 250 may be used instead of the drive circuit 50.

Note that part or all of the drive circuit 50 may be accommodated in the space inside the first attachment member 311. In this case, the drive circuit 50 and the plurality of electromagnets 41 are electrically connected by, for example, lead wires.

[Second mounting unit]
Next, the second attachment unit 302 will be described with reference to FIG. 17 in addition to FIG. FIG. 17 is a view showing the structure of the second attachment unit 302.

The second attachment unit 302 is a unit for attaching the sliding door 40 to the linear motor device 300, and is a unit used as a pair with the first attachment unit 301. The second attachment unit 302 is attached to the other end of the sliding door 40 in a predetermined direction. Specifically, the second attachment unit 302 is attached to an upper corner portion at the other end of the sliding door 40. The second mounting unit 302 includes a second mounting member 312, a second roller 322, a bearing portion 322a, and a shaft body 343b.

The second mounting member 312 is a substantially rectangular parallelepiped member having a curved lower surface. The second attachment member 312 may be formed of resin or may be formed of metal. There may be a space inside the second attachment member 312.

The second attachment unit 302 is attached to the other end of the sliding door 40 by fitting the second attachment member 312 into the second recess 342 provided at the other end of the sliding door 40. More specifically, the second concave portion 342 is provided at the corner portion located above the other end portion of the sliding door 40. For example, the second attachment member 312 fits into the second recess 342 by slide insertion in a predetermined direction, but may fit into the second recess 342 by slide insertion downward.

Although not shown in detail, the second mounting member 312 has a retaining structure such as a claw, for example, and the second retaining member 312 is fitted in the second recess 342 by the retaining structure. Maintained. The second attachment member 312 may be bonded in a state of being fitted in the second recess 342, or may be screwed in a state of being fitted in the second recess 342.

The second roller 322 is a wheel for hooking the sliding door 40 on the rail 30 and moving the sliding door 40 smoothly with respect to the rail 30 and rolls the running surface of the rail 30 in a predetermined direction. The second roller 322 may be formed of resin or may be formed of metal.

The rotation shaft of the second roller 322 is rotatably supported by the bearing portion 322a. In Embodiment 3, the second attachment unit 302 includes a plurality of second rollers 322, but it is sufficient that at least one second roller 322 is provided.

The shaft body 343b is a member for connecting and holding the second attachment member 312 and the second roller 322 integrally. The shaft body 343b may be formed of a resin or a metal.

The second attachment member 312 is connected to one end of the shaft body 343b, and the second roller 322 is connected to the other end of the shaft body 343b. The shaft body 343b passes between the two rails 30, whereby the second roller 322 is positioned above the rail 30 (ceiling side), and the second mounting member 312 is below the rail 30 (floor side). Located in.

[Effects of Embodiment 3, etc.]
As described above, the linear motor device 300 is a sliding door linear motor device that moves the sliding door 40 along the rail 30 arranged in a structure and extending in a predetermined direction. The structure is, for example, an upper frame 20 (kamoi).

The linear motor device 300 includes a first attachment unit 301 attached to one end of the sliding door 40 in a predetermined direction and a first attachment unit 301 attached to the other end of the sliding door 40 in a predetermined direction. And two attachment units 302.

The first attachment unit 301 includes a first attachment member 311 for attaching the first attachment unit to one end, and a first roller 321 that rolls the traveling surface of the rail 30 in a predetermined direction. The first mounting unit 301 has a plurality of electromagnets 41 arranged along a predetermined direction in order to move the sliding door 40 using the magnetic force of the plurality of permanent magnets 31 arranged along the predetermined direction in the structure. Have The first attachment unit 301 includes a drive circuit 50 that drives the plurality of electromagnets 41 using electric power supplied from the non-contact power supply circuit 60 arranged in the structure.

The second attachment unit 302 includes a second attachment member 312 for attaching the second attachment unit 302 to the other end, and a second roller 322 that rolls the traveling surface of the rail 30 in a predetermined direction.

For example, a linear motor device in which the positional relationship between the first mounting unit 301 and the second mounting unit 302 is fixed by a rod-shaped member or the like has a width (in a predetermined direction) even if it can be used for one sliding door 40. There is a problem that it cannot be used for other different sliding doors 40. In particular, when a plurality of permanent magnets 31 are arranged on the sliding door 40, a member for fixing the positional relationship between the first attachment unit 301 and the second attachment unit 302 is also necessary in order to arrange the plurality of permanent magnets 31. Become.

On the other hand, in the linear motor device 300, the plurality of electromagnets 41 are arranged in the sliding door 40, and the linear motor device 300 can reduce the number of electromagnets 41 than the number of permanent magnets 31. If there are few electromagnets 41, the space where the electromagnet 41 is arrange | positioned may be small. Accordingly, the first attachment unit 301 and the second attachment unit 302 can be configured separately. Thus, since the first mounting unit 301 and the second mounting unit 302 are separate bodies and the positional relationship is not fixed, the linear motor device 300 is used for a plurality of types of sliding doors 40 having different widths (in a predetermined direction). Is possible. That is, the linear motor device 300 has improved versatility.

Further, the first attachment unit 301 may be attached to one end portion by fitting the first attachment member 311 into the first recess 341 provided at one end portion. Further, the second attachment unit 302 may be attached to the other end portion by fitting the second attachment member 312 into the second recess 342 provided at the other end portion.

Thereby, the first attachment unit 301 and the second attachment unit 302 can be fitted into the sliding door 40. In addition, the attachment method of the 1st attachment unit 301 and the 2nd attachment unit 302 is not limited to the fitting method, For example, each of the 1st attachment member 311 and the 2nd attachment member 312 may clamp the sliding door 40. . The first attachment member 311 may be an adhesive or a screw for attaching the first attachment unit 301 to the sliding door 40. The same applies to the second attachment member 312.

Moreover, the 1st recessed part 341 may be provided in the corner | angular part of the sliding door 40 contained in one edge part, and the 2nd recessed part 342 may be provided in the corner | angular part of the sliding door 40 contained in the other edge part. .

Thereby, the first attachment unit 301 and the second attachment unit 302 can be fitted into the corners of the sliding door 40.

Further, the linear motor device 300 further accommodates the rail 30, the plurality of permanent magnets 31, the non-contact power feeding circuit 60, the rail 30, the plurality of permanent magnets 31, and the non-contact power feeding circuit 60, so that the structure A housing 350 to be attached may be provided.

Thereby, the installer can arrange the rail 30, the plurality of permanent magnets 31, and the non-contact power feeding circuit 60 on the structure at a time by attaching the casing 350 to the structure. That is, workability can be improved.

Further, the non-contact power feeding circuit 60 may be disposed at an end portion in a predetermined direction in the casing 350.

Thereby, an empty space in the housing 350 can be secured, and the degree of freedom of arrangement of other parts such as the plurality of permanent magnets 31 can be increased.

(Embodiment 4)
[Schematic configuration]
When constructing a linear motor device later on a sliding door in an existing house, it is desirable that the construction be easy. In the fourth embodiment, a linear motor device that is easy to construct will be described. In the fourth embodiment, components that are substantially the same as the components described in the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and differences such as arrangement are mainly described. Explanation is given. FIG. 18 is a diagram illustrating a schematic configuration of the linear motor device according to the fourth embodiment. FIG. 19 is a schematic diagram illustrating a structure in the first housing of the linear motor device according to the fourth embodiment. In the following fourth embodiment, the moving direction of the sliding door 40 described in the first and second embodiments is also referred to as a predetermined direction.

The linear motor device 400 is a device that moves (opens and closes) the sliding door 40 in a predetermined direction. The sliding door 40 is a so-called suspension type sliding door, and the first roller 421 and the second roller 422 (illustrated in FIG. 19) are hooked on the first housing 450a (rail portion 451a), so that the first housing 450a Can be hung. As shown in FIG. 18, the linear motor device 400 according to the fourth embodiment includes a first attachment unit 401, a main body unit 403, and a second attachment unit 402 (shown in FIG. 19).

[First mounting unit]
First, the first attachment unit 401 will be described. The first attachment unit 401 is a unit for attaching the sliding door 40 to the linear motor device 400, and is a unit used as a pair with the second attachment unit 402. The first attachment unit 401 is attached to the sliding door 40 by fitting the first attachment member 411 into a first recess 441 provided at a corner included in one end of the sliding door 40. Specifically, the first attachment unit 401 is attached to a corner portion located on the upper side at one end portion of the sliding door 40.

Here, the first attachment unit 401 includes a roller unit 401a, an electromagnet unit 401b, and a holding member 470 that couples the roller unit 401a and the electromagnet unit 401b. By the holding member 470, the roller unit 401a and the electromagnet unit 401b are accommodated in separate housings. Specifically, the roller unit 401a is housed in the first housing 450a, and the electromagnet unit 401b is housed in the second housing 450b of the main body unit 403.

[Roller unit]
Hereinafter, the roller unit 401a will be described with reference to FIGS.

The roller unit 401a includes a first attachment member 411, a first roller 421, and a shaft body 443a, and is accommodated in a first housing 450a disposed on the lower surface of the upper frame 20.

The first casing 450a is a substantially rectangular parallelepiped casing that is long in a predetermined direction. The portion of the bottom plate of the first housing 450a is a rail portion 451a. The rail portion 451a is provided with a slit along a predetermined direction so as to pass the shaft body 443a. Specifically, the first housing 450a is formed of metal such as aluminum, but may be formed of resin.

The first attachment member 411 is a substantially rectangular parallelepiped member having a curved lower surface. The first attachment member 411 may be formed of resin or may be formed of metal. There may be a space inside the first attachment member 411.

The first attachment unit 401 (roller unit 401a) is attached to one end of the sliding door 40 by fitting the first attachment member 411 into the first recess 441 provided at one end of the sliding door 40. More specifically, the first concave portion 441 is provided at a corner portion located at the upper side at one end portion of the sliding door 40. For example, the first attachment member 411 is fitted into the first recess 441 by slide insertion in a predetermined direction, but may be fitted into the first recess 441 by sliding insertion downward.

Although not shown in detail, the first mounting member 411 has a retaining structure such as a claw, for example, and the first retaining member 411 is fitted in the first recess 441 by the retaining structure. Maintained. The first attachment member 411 may be bonded in a state of being fitted in the first recess 441, or may be screwed in a state of being fitted in the first recess 441.

The first roller 421 is a wheel for hooking the sliding door 40 on the rail portion 451a and moving the sliding door 40 smoothly with respect to the rail portion 451a, and rolls the running surface of the rail portion 451a in a predetermined direction. The first roller 421 may be formed of resin or may be formed of metal.

The rotation shaft of the first roller 421 is rotatably supported by the bearing portion 421a. Further, the first roller 421 is accommodated in a first housing 450 a disposed on the upper frame 20. In the fourth embodiment, the first mounting unit 401 includes a plurality of first rollers 421, but it is sufficient that at least one first roller 421 is provided.

The rail portion 451a is an example of a first rail, and is a rail that is formed by a bottom plate of the first housing 450a and extends in a predetermined direction. The rail portion 451a (the bottom plate of the external first housing 450a) is provided with a slit extending in a predetermined direction, and the shaft body 443a is passed therethrough. The upper surface of the rail portion 451a is a traveling surface, and the first roller 421 rolls the traveling surface in a predetermined direction. Note that the rail portion 451a may be provided separately from the first housing 450a. In this case, the rail portion 451a may be formed of resin or metal.

The shaft body 443a is a member for connecting and holding the first attachment member 411 and the first roller 421 integrally. The shaft body 443a may be formed of a resin or a metal.

The first attachment member 411 is connected to one end of the shaft body 443a, and the first roller 421 is connected to the other end of the shaft body 443a. The shaft body 443a passes through the slit of the rail portion 451a. The first roller 421 is located above the rail portion 451a (ceiling side), and the first attachment member 411 is located below the rail portion 451a (floor side).

[Electromagnet unit]
Next, the electromagnet unit 401b will be described with reference to FIGS. 20 and 21 in addition to FIG. FIG. 20 is a schematic diagram showing a structure inside the second housing 450b. FIG. 21 is a diagram showing a three-dimensional structure in the second housing 450b.

The electromagnet unit 401b includes an auxiliary roller 423, a bearing portion 423a, a drive circuit 50, a plurality of electromagnets 41, and a connection member 430. The drive circuit 50 includes a pickup coil 51. The electromagnet unit 401b is accommodated in the second housing 450b of the main body unit 403 disposed on the side surface of the upper frame 20. The bottom plate portion of the second housing 450b is a rail portion 451b. The rail portion 451b is provided with a slit along a predetermined direction so as to allow the holding member 470 to pass therethrough.

The auxiliary roller 423 is a wheel for smoothly moving the electromagnet unit 401b with respect to the rail portion 451b, and rolls the traveling surface of the rail portion 451b in a predetermined direction. The rotation shaft of the auxiliary roller 423 is rotatably supported by the bearing portion 423a. In the fourth embodiment, the electromagnet unit 401b includes a plurality of auxiliary rollers 423, but may include at least one. Further, the auxiliary roller 423 and the bearing portion 423a are not essential components, and the electromagnet unit 401b may not include the auxiliary roller 423 and the bearing portion 423a.

The connection member 430 is a plate-like member having a rectangular shape in plan view, and integrally holds the auxiliary roller 423, the bearing portion 423a, the drive circuit 50 (pickup coil 51), and the plurality of electromagnets 41. It is a member. The connection member 430 may be formed of resin or may be formed of metal.

The connecting member 430 is arranged such that one main surface (lower surface) faces the rail portion 451a and the longitudinal direction is along a predetermined direction. On the other main surface (upper surface) of the connecting member 430, a plurality of electromagnets 41 and a drive circuit 50 (more specifically, the drive circuit 50 excluding the pickup coil 51) are arranged side by side in a predetermined direction. On the other main surface of the connection member 430, the drive circuit 50 is disposed closer to the auxiliary roller 423 (bearing portion 423 a) than the plurality of electromagnets 41. The plurality of electromagnets 41 are arranged in a predetermined direction on the upper surface of the connection member 430.

The bearing portion 423a of the auxiliary roller 423 is connected to a side surface (end surface) located at one end in the longitudinal direction of the connection member 430. A coil bobbin 51a of the pickup coil 51 is connected to a side surface (end surface) located at one end of the connecting member 430 in the short direction. In addition, another auxiliary roller (bearing part of another auxiliary roller) may be further connected to the side surface (end surface) located at the other end in the longitudinal direction of the connecting member 430.

Note that the connection member 430 is an example, and other members may be used to hold the first mounting member 411, the first roller 421, the drive circuit 50, and the plurality of electromagnets 41 integrally. Good.

The plurality of electromagnets 41 are arranged along the predetermined direction on the upper surface of the connection member 430 in order to move the sliding door 40 using the magnetic force of the plurality of permanent magnets 31. As in the first embodiment, the number of electromagnets 41 is not particularly limited. Further, the electromagnet 41 may be arranged in any way as long as the sliding door 40 can be opened and closed.

The drive circuit 50 drives the plurality of electromagnets 41 using the power supplied from the non-contact power supply circuit 60. Specifically, the drive circuit 50 includes a pickup coil 51, and sequentially switches the polarities of the plurality of electromagnets 41 using electric power obtained through the pickup coil 51. The specific configuration of the drive circuit 50 is as described in the first embodiment. In the linear motor device 400, the drive circuit 150 or the drive circuit 250 may be used instead of the drive circuit 50.

[Holding member]
The holding member 470 holds the electromagnet unit 401b outside the first housing 450a. More specifically, the holding member 470 holds the electromagnet unit 401b inside the second housing 450b. That is, the holding member 470 holds the electromagnet unit 401b outside the first housing 450a, the upper frame 20, and the sliding door 40. As shown in FIG. 18, the sliding door 40 is provided with a notch 441 a corresponding to the holding member 470.

The holding member 470 has an L-shaped bar shape, and has a portion that is long in the entrance / exit direction of the sliding door 40 and a portion that is long in the height direction of the sliding door 40 perpendicular thereto. The holding member 470 may be formed of resin or may be formed of metal.

One end of the holding member 470 is connected to the side surface of the first mounting member 411, and the other end of the holding member 470 is connected to the lower surface of the bearing portion 423a. By connecting the roller unit 401a and the electromagnet unit 401b by the holding member 470, the roller unit 401a and the electromagnet unit 401b are different in the position of the sliding door 40 in and out. According to the holding member 470, the electromagnet unit 401b is held in the second housing 450b.

Note that the holding member 470 is not limited to an L-shaped bar shape and may have any shape and structure, such as an L-shaped plate shape, as long as at least the plurality of electromagnets 41 can be held outside the first housing 450a. It may be. The holding member 470 may hold at least the plurality of electromagnets 41 outside the first housing 450a. That is, it is sufficient that at least the plurality of electromagnets 41 is accommodated in the second casing 450b, and the drive circuit 50 including the pickup coil 51 may be accommodated in the first casing 450a, for example. Further, part or all of the drive circuit 50 may be accommodated in the space in the first attachment member 411.

[Main unit]
Next, the main unit 403 will be described with reference to FIG. 22 in addition to FIG. 18, FIG. 20, and FIG. FIG. 22 is a diagram showing the structure of the main unit 403. In FIG. 22, the second housing 450b is not shown except for the rail portion 451b.

20 to 22, the main unit 403 includes a second casing 450b including a rail portion 451b, a plurality of permanent magnets 31, and a non-contact power feeding circuit 60. The non-contact power supply circuit 60 includes a line type coil 65.

The second housing 450 b is a housing that houses the plurality of permanent magnets 31 and the non-contact power feeding circuit 60 and is externally attached to the upper frame 20 positioned above the sliding door 40. When the linear motor device 400 is completed, the electromagnet unit 401b is also accommodated in the second housing 450b.

The second casing 450b has a substantially rectangular parallelepiped shape that is long in a predetermined direction. As described above, the bottom plate portion of the second housing 450b is the rail portion 451b. A long slit in a predetermined direction is provided in the bottom plate portion of the second housing 450b so that the holding member 470 does not hit when the sliding door 40 moves.

The second housing 450b is specifically formed of a metal such as aluminum, but may be formed of a resin. When the second housing 450b is formed of metal, the second housing 450b also functions as a magnetic shield.

A spacer 460 (shown in FIG. 20) is provided between the non-contact power feeding circuit 60 and the plurality of permanent magnets 31 inside the second housing 450b. The spacer 460 is a structural component for fixing the line coil 65 and is a plate-like member for determining the positions (boundaries) of the plurality of permanent magnets 31 and the non-contact power supply circuit 60. The spacer 460 may be formed of resin or may be formed of metal. The spacer 460 may be integrally formed with the second housing 450b.

The rail portion 451b is an example of a second rail, and is a rail that is formed by a bottom plate of the second housing 450b and extends in a predetermined direction. The rail portion 451b (the bottom plate of the second housing 450b) is provided with a slit extending in a predetermined direction, and the holding member 470 is passed therethrough. The upper surface of the rail portion 451b is a traveling surface, and the auxiliary roller 423 rolls the traveling surface in a predetermined direction. Note that the rail portion 451b may be provided separately from the second housing 450b. In this case, the rail portion 451b may be formed of resin or may be formed of metal.

The plurality of permanent magnets 31 are alternately arranged, for example, on the top plate side in the second housing 450b, with N poles and S poles each having a certain length along a predetermined direction. The plurality of permanent magnets 31 are arranged along the predetermined direction on the upper frame 20 by the body unit 403 being built in or externally attached to the upper frame 20. The plurality of permanent magnets 31 need only be provided at the central portion in the predetermined direction in the second housing 450b, and may not be provided at the end in the predetermined direction.

The non-contact power supply circuit 60 is accommodated in the second housing 450b. The non-contact power supply circuit 60 is a circuit that is arranged at an end portion in the predetermined direction in the second housing 450 b and performs non-contact power supply to the drive circuit 50 included in the first attachment unit 401. The non-contact power supply circuit 60 is disposed on the upper frame 20 by externally attaching the main unit 403 to the upper frame 20. As shown in FIGS. 21 and 22, the non-contact power feeding circuit 60 may be disposed on the upper surface of the rail portion 451 b, but is disposed above the auxiliary roller 423 so as not to hinder the traveling of the auxiliary roller 423. It may be held by a part of the second housing 450b.

Specifically, the non-contact power supply circuit 60 includes a line type coil 65 and performs non-contact power supply to the drive circuit 50 through the line type coil 65. Between the loops of the line type coil 65 (in the loop), only the pickup coil 51 is disposed, and the drive circuit 50 and the electromagnet 41 are not disposed. Thereby, the influence which the magnetic field (magnetic field) produced between the loops of the line type coil 65 has on the drive circuit 50 and the electromagnet 41 can be reduced. The specific circuit configuration of the non-contact power feeding circuit 60 is as described in the first embodiment. In the linear motor device 400, a non-contact power supply circuit 160 or a non-contact power supply circuit 260 may be used instead of the non-contact power supply circuit 60.

[Second mounting unit]
Next, the second mounting unit 402 will be described with reference to FIG. 23 in addition to FIG. FIG. 23 is a view showing the structure of the second attachment unit 402.

The second attachment unit 402 is a unit for attaching the sliding door 40 to the linear motor device 400, and is a unit used in pairs with the first attachment unit 401. The second attachment unit 402 is attached to the other end of the sliding door 40 in a predetermined direction. Specifically, the second attachment unit 402 is attached to the upper corner of the sliding door 40 at the other end. The second attachment unit 402 includes a second attachment member 412, a second roller 422, a bearing portion 422a, and a shaft body 443b.

The second mounting member 412 is a substantially rectangular parallelepiped member having a curved lower surface. The second attachment member 412 may be formed of resin or may be formed of metal. Further, there may be a space inside the second attachment member 412.

The second attachment unit 402 is attached to the other end by fitting the second attachment member 412 into the second recess 442 provided at the other end of the sliding door 40. More specifically, the second recessed portion 442 is provided at a corner portion located above the other end portion of the sliding door 40. For example, the second attachment member 412 fits into the second recess 442 by slide insertion in a predetermined direction, but may fit into the second recess 442 by slide insertion downward.

Further, although not shown in detail, the second mounting member 412 has a retaining structure such as a claw, for example, and the second retaining member 412 is fitted in the second recess 442 by the retaining structure. Maintained. The second attachment member 412 may be bonded in a state of being fitted in the second recess 442, or may be screwed in a state of being fitted in the second recess 442.

The second roller 422 is a wheel for hooking the sliding door 40 on the rail portion 451a and moving the sliding door 40 smoothly with respect to the rail portion 451a, and rolls the running surface of the rail portion 451a in a predetermined direction. The second roller 422 may be made of resin or may be made of metal.

The rotation shaft of the second roller 422 is rotatably supported by the bearing portion 422a. In the fourth embodiment, the second attachment unit 402 includes a plurality of second rollers 422, but it is sufficient that at least one second roller 422 is provided.

The shaft body 443b is a member for connecting and holding the second attachment member 412 and the second roller 422 integrally. The shaft body 443b may be formed of resin or metal.

The second attachment member 412 is connected to one end of the shaft body 443b, and the second roller 422 is connected to the other end of the shaft body 443b. The shaft body 443b passes through the slit of the rail portion 451a. Thereby, the 2nd roller 422 is located above the rail part 451a (ceiling side), and the 2nd attachment member 412 is located below the rail part 451a (floor surface side).

[Effects of Embodiment 4 and the like]
As described above, the linear motor device 400 is a sliding door linear motor device that moves the sliding door 40 along the rail portion 451a disposed in the upper frame 20 and extending in a predetermined direction. The upper frame 20 is an example of a structure, and the rail portion 451a is an example of a first rail.

The linear motor device 400 includes a first attachment unit 401 attached to the sliding door 40.

The first attachment unit 401 is a first attachment member 411 attached to the sliding door 40, and a first roller 421 that rolls the running surface of the rail portion 451a in a predetermined direction, and is a first housing 450a disposed on the upper frame 20. And a first roller 421 accommodated therein. The first mounting unit 401 has a plurality of electromagnets arranged along a predetermined direction in order to move the sliding door 40 using the magnetic force of the plurality of permanent magnets 31 arranged along the predetermined direction on the upper frame 20. 41. The first mounting unit 401 includes a drive circuit 50 that drives a plurality of electromagnets 41 using electric power supplied from a non-contact power supply circuit 60 disposed on the upper frame 20, and a plurality of electromagnets 41 connected to the first casing 450a. A holding member 470 that is held outside.

Thereby, the user can arrange the plurality of electromagnets 41 on the outside of the first housing 450a by replacing the mounting unit of the sliding door 40 attached to the existing house with the first mounting unit 401. When the main unit 403 (second housing 450b) is externally attached to the upper frame 20, the plurality of electromagnets 41 are arranged in the second housing 450b. That is, the linear motor device 400 is easily constructed by exchanging the attachment unit and attaching the main unit 403 externally. Since large-scale construction such as processing the upper frame 20 is not necessary, a sliding door linear motor device that is easy to construct is realized.

The linear motor device 400 may further include a plurality of permanent magnets 31 and a second housing 450b that houses the plurality of permanent magnets 31 and is externally attached to the upper frame 20. The holding member 470 may hold the plurality of electromagnets 41 in the second housing 450b.

Thereby, the linear motor device 400 can hold the plurality of electromagnets 41 and the plurality of permanent magnets 31 in the second housing 450b. That is, the user can easily construct the plurality of electromagnets 41 and the plurality of permanent magnets 31 by externally attaching the second housing 450b.

The linear motor device 400 may further include a non-contact power feeding circuit 60 accommodated in the second housing 450b, and the holding member 470 may further hold the drive circuit 50 in the second housing 450b. .

Thereby, the linear motor device 400 can hold the drive circuit 50 and the non-contact power feeding circuit 60 in the second casing 450b. That is, the user can easily construct the drive circuit 50 and the non-contact power feeding circuit 60 by externally attaching the second housing 450b.

Further, the linear motor device 400 may further include a rail portion 451b extending in a predetermined direction. The rail part 451b is an example of a second rail. The first attachment unit 401 may further include an auxiliary roller 423 that is held in the second housing 450b by the holding member 470 and rolls the running surface of the rail portion 451b in a predetermined direction.

Thereby, since the rail part 451b can support the load of the plurality of electromagnets 41 applied to the holding member 470 by the rail part 451b via the auxiliary roller 423, the durability of the holding member 470 can be improved.

Further, the rail portion 451a may be formed as a part of the first housing 450a, and the rail portion 451b may be formed as a part of the second housing 450b.

Thereby, the linear motor device 400 can use a part of the first casing 450a and a part of the second casing 450b as rails.

(Other embodiments)
The linear motor device according to the embodiment has been described above, but the present invention is not limited to the above embodiment.

For example, in the above embodiment, the plurality of magnets and the non-contact power feeding circuit are attached to the upper frame, but may be attached to the lower frame (sill). That is, the plurality of magnets and the non-contact power feeding circuit may be embedded under the floor.

Moreover, in the said embodiment, although the sliding door was demonstrated as what is installed in a house, the linear motor apparatus which concerns on the said embodiment has other sliding doors, such as a slide door provided in the entrance of a building. It can also be a moving object. Moreover, the linear motor device according to the above embodiment may use a window, a curtain, a blind, a shutter, or the like as a moving object. Further, the moving object may be provided indoors or outdoors. In addition, an article that can be manually moved by the user may be set as the moving object.

Further, the moving direction of the moving object is not particularly limited, and the linear motor device according to the above embodiment may move the moving object in the horizontal direction or move it in the vertical direction (vertical direction). Also good. In addition, the linear motor device according to the above embodiment may not only move the moving object linearly but also make it curve.

Further, the circuit configuration described in the above embodiment is an example, and the present invention is not limited to the above circuit configuration. That is, like the above circuit configuration, a circuit that can realize the characteristic function of the present invention is included in the present invention. For example, the present invention includes a device in which a device such as a switching device (transistor), a resistor, or a capacitor is connected in series or in parallel to a certain device within a range in which a function similar to the above circuit configuration can be realized It is. In other words, the term “connected” in the above embodiment is not limited to the case where two terminals (nodes) are directly connected, and the two terminals ( Node) is connected through an element.

In the above embodiment, each component (for example, the first control unit and the second control unit) is configured by dedicated hardware or executed by executing a software program suitable for each component. May be. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

Also, the general or specific aspect of the present invention may be realized as another device or system. For example, this invention may be implement | achieved as a sliding door apparatus provided with the linear motor apparatus which concerns on the said embodiment, and a sliding door.

In addition, it is realized by variously conceiving various modifications conceived by those skilled in the art for each embodiment, or by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention. This form is also included in the present invention.

10, 100, 110, 210, 300, 400

Linear motor device

20, 120 Upper frame (structure)
30 rail 31

permanent magnet

40, 140 sliding door 41

electromagnet

50, 150, 250 drive circuit 51 pickup coil (power receiving unit)
60, 160, 260 Non-contact power feeding circuit 61 First AC-DC conversion circuit (AC-DC conversion circuit)
63 First inverter circuit (inverter circuit)
65 Line type coil (power transmission part)
70

AC power supply

151, 251 Filter circuit 301 First attachment unit 302 Second attachment unit 311 First attachment member 312 Second attachment member 321 First roller 322 Second roller 341 First recess 342 Second recess 350 Case 401 First Mounting unit (mounting unit)
411 First attachment member (attachment member)
421 First roller (roller)
423 Auxiliary roller (roller)
441 1st recessed part 442 2nd recessed part 450a 1st housing | casing 450b 2nd housing | casing 451a Rail part (1st rail)
451b Rail part (second rail)
470 Holding member

Claims

A linear motor device that moves a moving object along a guide provided in a structure,
A plurality of permanent magnets attached to the structure along the guide;
A plurality of electromagnets attached to the moving object along the guide;
A drive circuit attached to the moving object and driving the plurality of electromagnets;
A linear motor device, comprising: a non-contact power supply circuit that is attached to the structure and performs non-contact power supply to the drive circuit.
The non-contact power feeding circuit is:
An AC-DC conversion circuit for converting AC power obtained from an AC power source into DC power and outputting the DC power;
An inverter circuit for converting DC power output from the AC-DC conversion circuit into AC power and outputting the AC power;
A power transmission unit that transmits AC power output from the inverter circuit to the drive circuit in a contactless manner;
The drive circuit is
A power receiving unit that receives AC power transmitted by the power transmitting unit;
The linear motor device according to claim 1, further comprising: a filter circuit that filters AC power received by the power receiving unit and applies the AC power to the plurality of electromagnets.
The inverter circuit converts the DC power output from the AC-DC conversion circuit into a PWM (Pulse Width Modulation) signal that is pulse-width modulated in accordance with a predetermined voltage waveform, and outputs the PWM (Pulse Width Modulation) signal.
The power transmission unit transmits the PWM signal output from the inverter circuit to the drive circuit in a contactless manner,
The power receiving unit receives the PWM signal transmitted by the power transmission unit,
The linear motor device according to claim 2, wherein the filter circuit applies AC power having the predetermined voltage waveform to the plurality of electromagnets by filtering a PWM signal received by the power receiving unit.
The inverter circuit is a three-phase inverter circuit that converts DC power output from the AC-DC conversion circuit into three PWM signals having different phases and outputs the PWM signal.
The power transmission unit transmits the three PWM signals output from the inverter circuit to the drive circuit in a contactless manner,
The power receiving unit receives three PWM signals transmitted by the power transmission unit,
The filter circuit filters the three PWM signals received by the power receiving unit to generate three AC powers having different phases from each other, each of the AC power having the predetermined voltage waveform. The linear motor device according to claim 3.
The inverter circuit is a two-phase inverter circuit that converts the DC power output from the AC-DC conversion circuit into two PWM signals having different phases and outputs the two PWM signals.
The power transmission unit transmits two PWM signals output from the inverter circuit to the drive circuit in a contactless manner,
The power reception unit receives two PWM signals transmitted by the power transmission unit,
The filter circuit filters two PWM signals received by the power receiving unit to generate two AC powers having different phases from each other, and each of the two AC powers having the predetermined voltage waveform. To the electromagnet,
The linear motor device according to claim 3, wherein at least one of the two AC powers is shared by two electromagnets included in the plurality of electromagnets.
The non-contact power feeding circuit is:
A first AC-DC conversion circuit for converting AC power obtained from an AC power source into DC power and outputting the DC power;
A first inverter circuit that converts DC power output from the first AC-DC conversion circuit into AC power and outputs the AC power;
A power transmission unit that transmits AC power output from the first inverter circuit to the drive circuit in a contactless manner;
The drive circuit is
A power receiving unit that receives AC power transmitted by the power transmitting unit;
A second AC-DC conversion circuit that converts AC power received by the power receiving unit into DC power;
2. The linear motor device according to claim 1, further comprising: a second inverter circuit that converts the DC power converted by the second AC-DC conversion circuit into AC power, and supplies the converted AC power to the plurality of electromagnets. .
The power transmission unit includes a line coil extending along the guide,
The linear motor device according to any one of claims 2 to 6, wherein the power reception unit includes a coil that receives supply of AC power from the line coil.
The linear motor device moves the sliding door as the moving object along a rail extending in a predetermined direction as the guide,
The plurality of permanent magnets are disposed in the structure along the predetermined direction,
further,
A first attachment unit attached to one end of the sliding door in the predetermined direction;
The first mounting unit and a separate second mounting unit attached to the other end of the sliding door in the predetermined direction,
The first mounting unit is:
A first attachment member for attaching the first attachment unit to the one end;
A first roller that rolls the running surface of the rail in the predetermined direction;
The plurality of electromagnets arranged along the predetermined direction;
A drive circuit for driving the plurality of electromagnets using electric power supplied from the non-contact power supply circuit disposed in the structure;
The second mounting unit is
A second attachment member for attaching the second attachment unit to the other end;
The linear motor device according to any one of claims 1 to 7, further comprising a second roller that rolls on a traveling surface of the rail in the predetermined direction.
The first attachment unit is attached to the one end by fitting the first attachment member into a first recess provided at the one end,
The linear motor device according to claim 8, wherein the second attachment unit is attached to the other end portion by fitting the second attachment member into a second recess provided in the other end portion.
The first recess is provided at a corner of the sliding door included in the one end,
The linear motor device according to claim 9, wherein the second recess is provided at a corner of the sliding door included in the other end.
further,
The rail;
The linear motor device according to any one of claims 8 to 10, further comprising a housing that accommodates the rail, the plurality of permanent magnets, and the non-contact power feeding circuit and is attached to the structure.
The linear motor device according to claim 11, wherein the non-contact power feeding circuit is disposed at an end portion in the predetermined direction in the housing.
The linear motor device moves the sliding door as the moving object along a first rail extending in a predetermined direction as the guide,
The plurality of permanent magnets are disposed in the structure along the predetermined direction,
further,
An attachment unit attached to the sliding door;
The mounting unit is
An attachment member attached to the sliding door;
A roller that rolls the running surface of the first rail in the predetermined direction, and a roller that is housed in a first housing disposed in the structure;
The plurality of electromagnets arranged along the predetermined direction;
A drive circuit that drives the plurality of electromagnets using electric power supplied from a non-contact power supply circuit disposed in the structure;
The linear motor device according to any one of claims 1 to 7, further comprising a holding member that holds the plurality of electromagnets outside the first casing.
Further, the second housing that houses the plurality of permanent magnets and is externally attached to the structure,
The linear motor device according to claim 13, wherein the holding member holds the plurality of electromagnets in the second housing.
Furthermore, the non-contact power feeding circuit accommodated in the second housing,
The linear motor device according to claim 14, wherein the holding member further holds the drive circuit in the second housing.
And a second rail extending in the predetermined direction.
The linear motor device according to claim 14, wherein the attachment unit further includes a roller that is held in the second housing by the holding member and rolls a running surface of the second rail in the predetermined direction.
The first rail is formed as a part of the first housing.
The linear motor device according to claim 16, wherein the second rail is formed as a part of the second housing.
The linear motor device according to any one of claims 1 to 17, wherein the number of the plurality of electromagnets is smaller than the number of the plurality of permanent magnets.
A linear motor device according to any one of claims 1 to 18,
A sliding door device comprising: a sliding door that is moved by the linear motor device.