JP2000324789A - Drive coil for linear motor and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate working of positioning a coil of a linear motor on a substrate, and dispense with the work to prevent winding collapse of a coil and imperfect insulation. SOLUTION: An air-core coil 1 is provided with a winding start terminal part 5 and a winding end terminal part 6. Stiffener 2 of high rigidity, e.g. engineering plastic is formed in a block type. The outer peripheral surface of the block is brought closely into contact with the inner peripheral surface of the air-core coil 1 and fixed. In order to enable positioning of the air-core coil at the fixing position of the substrate, a positioning protrusion 4 is formed in the stiffener, which may be fixed to both the inside and the outside of the air-core coil, or to the whole part of the outside, or to a part of the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive coil for a linear motor used for a linear motor used for transporting and positioning an assembling apparatus and an inspection apparatus, and a method of manufacturing the same.

[0002]

2. Description of the Related Art There are various types of linear motors, but linear synchronous motors and linear DC motors generally have a drive coil mounted on a bed (base) and a permanent magnet mounted on a table (block). A permanent magnet movable linear motor that allows the table with magnets to move when the bed is fixed, a permanent magnet is mounted on the bed, a drive coil is mounted on the table, and the table with coils is movable when the bed is fixed. There is a movable coil type linear motor. In each case, the drive coil is fixed to a substrate, and a drive current is supplied to the drive coil via the substrate. Since the clearance between the drive coil attached to the substrate and the permanent magnet placed opposite to it is only about 0.3 mm to 1.0 mm, if the substrate is slightly bent, the drive coil contacts the permanent magnet. As a result, there is a possibility that a malfunction may occur. Therefore, at present, the substrate is manufactured from a highly rigid material such as ceramics or glass epoxy resin.

[0003] The drive coil is of an air-core shape, and in order to fix it at a predetermined position on the substrate, a cutting groove is formed on the substrate by cutting to form a positioning groove into which the drive coil can be fitted. A drive coil is fitted to position the coil at a predetermined position, or a positioning protrusion (commonly referred to as a "dub") is attached on the substrate, and the coil is positioned outside the positioning protrusion by covering the inner space of the coil. are doing.

In any of the above positioning means, the winding start end and winding end of the drive coil fixed on the substrate are connected to circuits and terminals on the substrate, respectively. At this time, the winding start end inside the drive coil crosses over or below the coil and is pulled out to connect to a circuit or the like on the substrate.

[0005] In recent years, with the development of new materials, permanent magnets used in linear motors have a strong magnetic force, and it is possible to produce a linear motor having a small propulsion force with small power consumption and small power consumption. Was. However, on the other hand, as the magnetic force of the permanent magnet increases, the drive coil facing the permanent magnet receives a strong reaction force in a direction orthogonal to the line of magnetic force, which may cause the winding to collapse. Therefore, at present, after winding an insulated conductor on a winding core to form a coil, the coil is heated and heated to melt the adhesive previously applied to the outer periphery of the insulating film of the insulated conductor, or Applying a solvent such as alcohol while winding on the core to melt the adhesive, then blowing hot air to forcibly dry the melted adhesive to bond the insulated conductors together,
Reinforcing treatment such as molding the entire coil with epoxy resin or the like is performed.

[0006]

[Problems to be Solved by the Invention] When the positioning groove is formed in the substrate as described above, since the substrate is made of a highly rigid material such as ceramics or glass epoxy resin, it is difficult to cut and it takes time and effort. In addition, cutting requires advanced processing technology, and the processing cost is also high. 2. When the positioning projection is protruded from the substrate, the positioning projection must be mounted at an accurate position. In addition, since the shape and size of the inner space are different depending on the coil, it is necessary to change the mounting position and dimensions of the positioning projection in accordance with the shape and size, resulting in an increase in cost. 3. When the winding start end of the drive coil attached to the substrate is pulled out across the coil, the insulation conductor at the winding start end and the insulation conductor at the winding end end come into contact with each other. There is a risk of sparking due to a short circuit. In particular, when the applied voltage is cut off, the voltage difference becomes large due to the back electromotive force due to the electromagnetic induction action, which may increase the fear.
Therefore, it is necessary to improve the insulation by covering the winding start end drawn out of the coil with a glass tube. 4. Even if the insulated conductors are bonded to each other and reinforced as described above to prevent the coil from collapsing, it is difficult to prevent the coil from collapsing 100%, and the cost is correspondingly high. Become. 5. Even if the same jig is used to wind the insulated conductor, the thickness of each coil varies. Therefore, in a linear motor using a plurality of drive coils, the distance between each drive coil and the permanent magnet disposed opposite to the drive coil differs, and a difference occurs in the magnetic force acting on each coil. Note that the magnetic force decreases in inverse proportion to the square of the distance.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a drive coil for a linear motor and a method for manufacturing the same, which solve the above-mentioned problems.

The first linear motor drive coil of the present application is a rigid reinforcing material that is provided on the whole or a part of one or both of the inside and / or outside of an air-core coil having a winding start end and a winding end. And a positioning projection is provided on the reinforcing member for positioning the air-core coil at the mounting position of the substrate.

In the second linear motor drive coil of the present application, the winding start end of the air-core coil is drawn out from the inside of the air-core coil and can be connected to a terminal or a circuit on a substrate.

In the third drive coil for a linear motor of the present application, the winding end of the air-core coil is drawn out of the air-core coil and can be connected to a terminal or a circuit on a substrate.

The fourth drive coil for a linear motor of the present application has a space in which a reinforcing material can be connected to a winding start end of an air-core coil to a terminal or a circuit of a substrate.

The fifth drive coil for a linear motor of the present application is provided with a lead-out portion recessed from the surface of a reinforcing member, and when the air-core coil to which the reinforcing member is fixed is attached to a substrate, the lead-out portion and the substrate are provided. And a leading space in which the winding start end derived from the air core coil can be led into the space.

The sixth linear motor drive coil of the present application is provided with a lead-out portion recessed from the surface of a reinforcing member, and when the air-core coil to which the reinforcing member is fixed is attached to a substrate, the lead-out portion and the substrate are provided. And a lead-out space in which a winding end portion derived from the air-core coil can be led out of the air-core coil.

The seventh linear motor drive coil of the present application has a reinforcing member made of a rigid resin and provided with a positioning projection inserted into a positioning hole of the substrate.

In the method of manufacturing a drive coil for a linear motor according to the present invention, an air-core coil wound with an insulated conductor is set in a mold, and the mold is filled with a resin, and either the inside or outside of the air-core coil or In molding a rigid resin reinforcing material on all or part of one side, the winding start end of the air-core coil or the winding start end is housed in a part of the mold, and the resin filled in the mold is filled with the resin. It is designed not to adhere to the winding start end or the winding start end.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment of Drive Coil for Linear Motor) A first embodiment of a drive coil for a linear motor according to the present invention will be described in detail with reference to FIGS.
The drive coil for this linear motor is, as shown in FIG.
The insulated conducting wire 10 is wound into a substantially rectangular ring shape, and is stacked in a bale winding up and down to form the air-core coil 1.
A resin reinforcing material 2 as shown in FIG.
And a positioning projection 4, a space 7, and an outlet 8.

The reinforcing member 2 shown in FIG. 2 is formed in a block shape whose outer peripheral surface is in close contact with the inner peripheral surface of the air-core coil 1, and is arranged at a position facing the permanent magnet, and a current is applied. In some cases, according to Fleming's left-hand rule, the coil acts to prevent the winding of the air-core coil 1 from being broken or deformed by a force (reaction force) generated in a direction orthogonal to the direction of the line of magnetic force. This reinforcing material 2 is an air-core coil 1
Is formed by injection molding of a thermoplastic resin into the inner space 12 (FIG. 1), and as shown in the enlarged view of FIG. The insulated wires 10 exposed at 12 bite into the lamination gap and come into close contact with each other, so that they are securely fixed without using an adhesive or the like. In addition, as shown in FIG. 3A, the thickness of the reinforcing member 2 is the same as the thickness of the air-core coil 1 or slightly smaller than the thickness of the air-core coil 1, and as shown in FIG. When attaching the air-core coil 1 to the substrate 3,
It does not require a mounting space larger than the thickness.

It is desirable that the reinforcing member 2 has high rigidity, and a so-called engineering plastic having a flexural modulus of 8 × 102 kgf / m or more per 1 m ² (according to ASTM D790) is used as a thermoplastic resin. desirable. Specifically, polyamide resin (for example, nylon), polyacetal resin, polycarbonate resin, modified polyphenylene ether, polyester resin (for example, polyethylene phthalate and polybutylene phthalate), polyphenylene sulfide resin, polysulfone resin, and polyether ketone resin It is desirable to use a resin (for example, polyether ether ketone), a wholly aromatic polyester resin (for example, polyarylate), an ABS resin, a polyolefin resin (for example, reinforced polypropylene), a thermotropic crystal polymer, or the like.

The space 7 shown in FIG. 2 is formed in a substantially rectangular shape inside the reinforcing member 2. The space 7 is formed by soldering the winding start end 5 of the air-core coil 1 disposed at a predetermined position on the substrate 3 to a circuit, an electrode, and a terminal 13 (FIG. 4a) on the substrate 3 or opening the coil on the substrate 3. It is a space for performing an operation of being inserted into a drawing hole (not shown) and drawn into the opposite side (back surface) of the substrate 3. In FIG. 2, the space 7 is formed at a position slightly leftward from the center of the reinforcing member 2 in the longitudinal direction. It is the same that the winding start end 5 drawn into the opposite side (back surface) of the substrate 3 from the drawing hole is connected to a circuit, an electrode, a terminal, etc. (not shown) on the substrate 3 by soldering or the like. . In FIG. 4A, reference numeral 15 denotes a terminal to which the winding end portion 6 of the air-core coil 1 is connected.

As shown in FIG. 2, the positioning projections 4 are provided near the outer periphery of the reinforcing member 2 and at the periphery of the space 7, respectively. Both positioning projections 4 are integrally formed with the reinforcing member 2 using the same material as the reinforcing member 2, and are inserted into positioning holes 14 (FIG. 4 a) opened in the substrate 3, whereby the air-core coil 1 is formed. Is precisely positioned at a predetermined position on the substrate 3. As shown in FIG.
When two or more positioning projections 4 are protruded from the two reinforcing portions 2,
It is desirable because the air-core coil 1 installed on the substrate 3 can be prevented from rotating in the horizontal direction. However, the air-core coil 1 is formed by using one positioning projection 4 and having a different shape (other than a circular shape). 1 may be restricted from rotating in the horizontal direction. Of course, all or some of the two or more positioning projections 4 may be modified. In any case, by pressing the positioning projection 4 into the positioning hole 14 (FIG. 4A) of the substrate 3, the air-core coil 1 can be fixed to the substrate 3 without using an adhesive or the like. Of course, it is also possible to fix to the substrate 3 with an adhesive or the like without press-fitting, or to press-fit and fix using an adhesive.

As shown in FIG. 2, the two positioning projections 4 are formed in a columnar shape. The positioning projections 4 projecting from the periphery of the space 7 communicate with the space 7 at the center thereof. A gap 18 is formed and a part thereof is chamfered.

As shown in FIG. 2, the lead-out portion 8 is
Is formed so as to be recessed so as to communicate with the gap 18 when the air-core coil 1 is disposed at a predetermined position on the substrate 3, as shown in FIG. Lead-out space 9 surrounded by the bottom surface 20 and both inner side surfaces 22 of the lead-out portion 8 and the upper surface 24 of the substrate 3
Is formed. By forming the lead-out space 9, the winding start end 5 of the air-core coil 1 can be drawn into the space 7 through the lead-out space 9 and the gap 18, and the winding start end 5 is connected to another insulated conductor 10 (particularly, the winding). Without contacting the insulated conductor near the end 6)
It can be drawn into the space portion 7 without being sandwiched between the substrate and the substrate 3.

As shown in FIG. 2, the lead-out portion 8 is
In order to increase the width, the winding start end 5 of the air core coil 1 is
Even if the point (point P in FIG. 2) folded back toward is slightly deviated in the direction of the arrow in FIG. 2, the winding start end portion 5 can be accommodated inside.

(Embodiment 2) A drive coil for a linear motor according to a second embodiment of the present invention will be described in detail with reference to FIG. The basic configuration of the drive coil for a linear motor shown in FIG. 5 is the same as that shown in FIG. The difference is that the reinforcing member 2 is provided outside the air core coil 1. The reinforcing member 2 is also formed by injecting a thermoplastic resin into the outside of the air-core coil 1 using a mold so that the inner peripheral surface of the reinforcing member 2 is exposed to the outer peripheral surface of the air-core coil 1. The conductive wire 10 penetrates into the lamination gap, closely contacts the outer peripheral surface, and is securely fixed without using an adhesive or the like.
Also, is the thickness of the reinforcing member 2 the same as the thickness of the air-core coil 1,
It is slightly thinner than the thickness of the air core coil 1.

A lead-out portion 8 is also formed in the reinforcing member 2 shown in FIG. 5, and a lead-out space 9 is formed when the air-core coil 1 is arranged at a predetermined position on the substrate 3. The space 9 is formed by connecting the winding end portion 6 of the air core coil 1 to the air core coil 1.
Used to pull out the outside. On the other hand, the winding start end 5 of the air-core coil 1 is turned back in the direction of the arrow in the same figure and connected to a circuit, a terminal, a terminal, or the like on the substrate 3 in the inner space 12 of the air-core coil 1.

(Other Embodiments of Drive Coil for Linear Motor) In the first or second embodiment, the reinforcing member 2 is provided on one of the inside and the outside of the air-core coil 1.
The reinforcing member 2 can be provided both inside and outside the air core coil 1. Further, it may be provided only on a part inside or outside the air core coil 1. In these cases, the positioning projection 4 and the lead-out section 8 may be provided on only one of the inner and outer reinforcing members 2 of the air core coil 1 or may be provided on both. When the reinforcing material 2 is provided inside the air-core coil 1, the shape of the reinforcing material 2 is restricted to some extent by the shape of the inner space 12 of the air-core coil 1.
When the reinforcing member 2 is provided outside the air-core coil 1, there is no such restriction, so that the reinforcing member 2 can have any shape.
In any case, the reinforcing material 2 can be made of FRP, ceramics, or the like other than the resin.

The position of the positioning projection 4 is not limited to the one shown in the figure, but can be changed as appropriate in accordance with the position of the positioning hole 14 on the substrate 3 or the installation position of the air-core coil 1. Further, the number of positioning projections 4 may be one or more.

The shape of the space 7 is not limited to the illustrated one, but may be any desired shape as long as the winding start end 5 of the air core coil 1 can be connected to a circuit or the like on the substrate 3. Also,
The lead-out portion 8 also has a desired shape as long as the lead-out space 9 can be formed between the reinforcing member 2 and the substrate 3 so that the winding start end 5 of the air-core coil 1 can be drawn into the space 7. Can be.

(Embodiment 1 of Method for Manufacturing Drive Coil for Linear Motor) A method for manufacturing the drive coil for linear motor of the present invention shown in FIG. 2 will be described below. . An insulated wire 10 is wound around a winding core attached to a rotating shaft to manufacture an air-core coil 1 as shown in FIG. . The air core coil 1 is set on the lower mold 26 as shown in FIG. At this time, as shown in the drawing, the winding start end 5 of the air-core coil 1 is pulled out in the thickness direction of the coil 1 and the lower mold 2 is pulled out.
6 is inserted into the escape hole 28 provided in the apparatus. The inner diameter of the escape hole 28 is substantially the same as the outer diameter of the winding start end 5,
When the winding start end 5 is inserted, the resin cannot enter between the winding start end 5 and the winding start end 5. . The upper die 3 is placed on the lower die 26 on which the air-core coil 1 is set.
Set 0. At this time, the upper die 30 is pressed toward the lower die 26 to press the air core coil 1 inside. In this way, the thickness of the air-core coil 1 is compressed to the height of the space 32 formed between the lower mold 26 and the upper mold 30, and the width (the size in the plane direction) is also reduced to the width of the space 32. As a result, variations in the thickness and width of each air core coil 1 are corrected. . A filling port 34 provided in the upper mold 30 is provided in the space 32.
The resin in a molten state is filled at a predetermined pressure. At this time, the resin does not adhere to the winding start end 5 of the air core coil 1 inserted in the escape hole 28. . When the resin cools and hardens, the lower mold 26 and the upper mold 30 are separated vertically and the coil is taken out.

The method for manufacturing the drive coil for a linear motor of the present invention shown in FIG. 5 is basically the same as that described above.
When a drive coil for a linear motor shown in FIG. 1 is manufactured, a reinforcing material 2 is formed outside the air-core coil 1 using a mold having a space 32 formed outside the air-core coil 1.

Although the insulated conductor 10 is formed by covering the conductor with a urethane resin, an insulated conductor covered with another insulating material may be used. Further, reinforcement processing such as bonding the insulated conductors 10 of the air-core coil 1 to each other with an adhesive or molding the entire air-core coil 1 with a resin can also be performed. Bonding of the insulated conductors 10 and molding can be performed by the same method as the conventional method. In addition, the air-core coil 1 may be formed by winding the insulated conductor 10 in a normal laminated manner instead of in a bale.

FIG. 7 shows an example of a linear motor using the linear motor drive coil of the present invention. The linear motor includes a bed 40 formed in a substantially rectangular plate shape as shown in the figure, a table 42 reciprocating along the longitudinal direction of the bed 40, and a driving coil of the present invention installed on the bed 40. 44 and the table 42
When a driving current is supplied to the driving coil 44 to generate a magnetic field around the permanent magnet 46, the table 42 on which the permanent magnet 46 is mounted according to Fleming's left-hand rule is moved in the direction of the arrow in FIG. And move in the same direction by receiving a thrust.

As shown in FIG. 7, a coil yoke 47 which is formed in a substantially rectangular plate shape and has substantially the same length as the bed 40 is disposed on the upper surface of the bed 40, and a plurality of hexagon socket head bolts ( (Not shown) to the bed 40. Two track rails 50 are arranged on both sides in the width direction of the coil yoke 47 in parallel along the longitudinal direction of the coil yoke 47, and are fixed to the coil yoke 47 by a plurality of flat small screws 51. I have.

As shown in FIG. 8, a track groove 52 having a substantially semicircular cross section is formed on the outer surface of each track rail 50.
Articles are formed. A slide member 54 that can slide back and forth along the track rail 50 is disposed on the track rail 50. This slide member 5
4, a rolling element circulation path (not shown) is formed.
Many balls 5 as rolling elements are provided in the rolling element circulation path.
6 are arranged and accommodated. These balls 56 are circulated while rolling on the track grooves 52 of the track rail 50 with the movement of the slide member 54 with respect to the track rail 50, and are circulated.
It acts to bear the load between.

The slide member 54 includes a casing 5
8, a pair of end caps 62 connected to both ends of the casing 58 by machine screws 60, and seals 64 fastened together on the outer surface of each end cap 62. The rolling element circulation path is formed in both end caps 62 so as to penetrate the casing 58 linearly and in parallel with each other, and is formed in both end caps 62 so that both ends of the load raceway groove and the return groove are connected to each other. And a pair of substantially arc-shaped direction change portions that communicate with each other. The load raceway groove of the rolling element circulation path faces the raceway groove 52 of the track rail 50.

As shown in FIG. 7, a plurality of drive coils 44 of the present invention are arranged between the two track rails 50 along the longitudinal direction of the bed 40. Specifically, FIG.
As shown in (a), the substrate 3 on which the plurality of drive coils 44 are arranged is arranged between the two track rails 50 so that the drive coil 44 faces the coil yoke 47. It is screwed to. When the substrate 3 is screwed to the coil yoke 47, an assembly or the like is interposed between the substrate 3 and the coil yoke 47 so that the substrate 3 is not deformed such as warpage by tightening the screws. Is desirable. Further, the substrate 3 is provided with a Hall effect element (not shown) corresponding to each drive coil 44.

As shown in FIG. 7, both ends in the longitudinal direction of the bed 40 are closed by end plates 66. Inside the respective end plates 66, a cushioning material 68 is attached and a table 42 which reciprocates on the bed 40 is slid. Bed 40 or table 4 even if
2 is not damaged. The length of the bed 40 can be arbitrarily selected according to the distance at which the table 42 is to be moved, but the length shown in FIG.
mm and the width is about 80 mm.

The table 42 shown in FIG. 7 is formed in a box shape, and the bottom surface thereof is fixed to a slide member 54 attached to the track rail 50, so that the table 42 can be viewed along the track rail 50 along the track rail 50. It is reciprocable in the direction of the arrow in the middle. This table 42
A magnet yoke is provided on the lower surface thereof, and a permanent magnet 46 is provided on the magnet yoke so as to face the drive coil disposed on the bed 40. When a drive current is applied to the drive coil 44, Fleming's left-hand rule is applied. It receives a thrust in the direction of the arrow in FIG. 7 and moves in the same direction. The permanent magnet 46 is formed in a substantially rectangular plate shape, and N and S magnetic poles are arranged alternately along the moving direction of the table 42 (the longitudinal direction of the bed 40).

The linear motor having the above structure can be pulse-controlled by a control system including a teaching box 70, a controller 72 (programmable controller), and a driver 74 as shown in FIG. Specifically, a program is input to the controller 72 using the teaching box 70, and a pulse output from the controller 72 according to the control program and a feedback signal of the current position by an encoder (not shown) provided in the linear motor are provided. A comparison operation is performed by the driver 74, and the table 42 of the plurality of drive coils 44 is
A voltage can be applied to the coil immediately below and moved by a programmed distance. The moving speed is controlled by the output frequency of the pulse. In addition to the pulse control, speed control and thrust control can be performed by a DC voltage input command. In addition, a sequencer or RS2
It can be operated by adding an external input / output device by 32C.

The linear motor shown in FIG.
2 is one, but the linear motor using the drive coil of the present invention includes a motor provided with two or more tables 42. In that case, the plurality of tables 42 can be moved individually or simultaneously. FIG.
As shown in FIG. 6, the upper part of the bed 40 is covered with a cover 80, and the table 42 is reciprocated in the longitudinal direction between the cover 80 and the bed 40. In this case, the upper surface of the table 42 is recessed in a U-shaped cross section, and the cover 80 is fitted inside the concave.

[0041]

According to the first drive coil for a linear motor of the present invention, a rigid reinforcing material is fixed to the whole or a part of the inside and / or outside of the air core coil, and the air core is attached to the reinforcing material. Since the positioning projection is provided to position the coil at a predetermined position on the substrate, the following effects can be obtained. 1. With the improvement of the holding force of the permanent magnet, even if the drive coil receives a strong reaction force in a direction orthogonal to the line of magnetic force, there is no possibility of collapse or deformation. 2. The coil can be positioned at a predetermined position only by opening a positioning hole on the substrate with a drill or the like and fitting a positioning protrusion into the positioning hole. Therefore, there is no need to form a positioning groove having a high degree of processing difficulty in order to position the drive coil on the substrate as in the related art. 3. In order to position the drive coil, there is no need to retrofit a positioning projection according to the shape of the air core different for each type of the coil on the substrate. 4. Since the shape of the inner space is the same even if the drive coil has a different outer shape, if the reinforcing material is provided in the inner space of the same coil, the shape of the reinforcing material is common without being affected by the outer shape of the coil It can be. 5. When the reinforcing member is provided outside the drive coil, the shape of the reinforcing member is not determined by the shape of the inner space of the coil, so that a desired shape can be obtained according to the shape of the substrate or the like.

The second linear motor drive coil of the present application has the following effects because the winding start end of the drive coil is pulled out from the inside thereof and can be connected to terminals and circuits on the substrate. 1. In order to connect the winding start end of the drive coil to a terminal, a circuit, or the like on the substrate, it is not necessary to form the substrate into a special shape or apply special processing to the substrate. 2. The volume occupied by the drive coil on the substrate can be minimized.

The third linear motor drive coil of the present application has the following effects because the winding end of the drive coil is drawn out of the air-core coil and can be connected to terminals and circuits on the substrate. . 1. In order to connect the winding end portion of the drive coil to a terminal, a circuit, or the like on the substrate, it is not necessary to form the substrate into a special shape or apply special processing to the substrate. 2. The volume occupied by the drive coil on the substrate can be minimized.

In the fourth drive coil for a linear motor of the present application, the reinforcing member has a space in which the winding start end of the air-core coil can be connected to the terminal or the circuit of the substrate, so that the following effects are obtained. There is. 1. It is very easy to connect the winding start end of the drive coil placed on the board to the terminals and circuits on the board,
Manufacturing time can be reduced.

The fifth linear motor drive coil of the present application is provided with a lead-out portion recessed from the surface of the reinforcing member, and when the air-core coil is mounted on the substrate, an air-core coil is provided between the lead-out portion and the substrate. Since a leading space in which the winding start end derived from the coil can be led into the space is formed, the following effects are obtained. 1. Since the winding start end does not contact the drive coil itself, there is no possibility of insulation failure and there is no need to cover the winding start end with a glass tube. 2. The winding start end drawn into the space for connection to a circuit or a terminal on the substrate is not sandwiched between the reinforcing member and the substrate. Therefore, the coil is rattled by the presence of the winding start end portion sandwiched between the reinforcing member and the substrate, or a process for forming a clearance on the upper surface of the substrate is performed to prevent the coil from rattling. No need.

The sixth linear motor drive coil of the present application has a lead-out portion that is recessed from the surface of the reinforcing member, and when the air-core coil is mounted on the substrate, an air-core is provided between the lead-out portion and the substrate. Since a lead-out space in which the winding end portion derived from the coil can be led out of the air-core coil is formed, the following effects are obtained. 1. The winding end drawn out for connection to a circuit or a terminal on the substrate is not sandwiched between the reinforcing material and the substrate.
Therefore, due to the presence of the winding end portion sandwiched between the reinforcing member and the substrate, the coil is rattled, or a process for forming a clearance on the upper surface of the substrate is performed to prevent the coil from rattling. No need.

The seventh drive coil for a linear motor of the present application has the following effects because the reinforcing member is made of a rigid resin and the positioning projections corresponding to the positioning holes of the substrate are projected. is there. 1. Since the reinforcing material has rigidity, it is possible to surely prevent the air core coil from collapsing or deforming. 2. Since the reinforcing material is made of resin, it is lightweight. Further, the processing is easy, and the reinforcing portion can be easily formed into a desired shape. Furthermore, since the cost of raw materials is low, the cost can be kept low.

The method for manufacturing a drive coil for a linear motor of the present application has the following effects. 1. Since the winding start end or winding end of the air core coil set in the mold is accommodated in a part of the mold, the resin filled in the mold is prevented from adhering to the winding start end or winding end. In addition, it is not necessary to remove the resin adhered when connecting the winding start end or winding end to a circuit or the like on the substrate, and the processing of the winding start end becomes very simple. Further, the adhered resin is not sufficiently removed and no contact failure occurs.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an air-core coil.

FIG. 2 is a perspective view showing a first embodiment of a drive coil for a linear motor according to the present invention.

3A is a cross-sectional view taken along line XX of FIG. 2, and FIG.
Partial enlarged view of FIG.

FIG. 4A is a plan view showing an example of a substrate on which a drive coil for a linear motor according to the present invention is installed, and FIG.
The top view which shows the state which installed the drive coil for linear motors of this invention on the board | substrate of FIG.

FIG. 5 is a perspective view showing a second embodiment of the drive coil for a linear motor according to the present invention.

FIG. 6 is an explanatory view showing a method of manufacturing a drive coil for a linear motor according to the present invention.

FIG. 7 is a perspective view including a partial cross section showing an example of a linear motor using the linear motor drive coil of the present invention.

FIG. 8 is an explanatory view including a partial cross section showing a track rail and a slide member used in the linear motor shown in FIG. 7;

FIG. 9 is an explanatory diagram illustrating an example of a control system of the linear motor illustrated in FIG. 7;

FIG. 10 is a perspective view showing another example of a linear motor using the linear motor drive coil of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air-core coil 2 Reinforcement 3 Substrate 4 Positioning projection 5 Winding start end 6 Winding end 7 Space 8 Outgoing part 9 Outgoing space 10 Insulated conductor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Kozuma 3310 Higashi Obokata, Higashi-mura, Sawa-gun, Gunma Pref. (72) Inventor Toshiaki Toga 392 Tokiwa, Kamakura-shi, Kanagawa Japan Thomson Japan Co., Ltd. (72) Inventor Eiji 392 Tokiwa, Kamakura-shi, Kanagawa Japan Thomson Co., Ltd. F-term (reference) CB13 CC14 CC19 CD21 CE01 EE09 EE10 FA11 FA22 FA26 FA27 FA29 5H641 BB06 BB19 GG02 GG05 GG07 GG11 GG12 GG24 GG26 GG28 HH03 HH05 JA03 JA09 JA10 JB10

Claims (8)

[Claims] An air-core coil (1) having a winding start end (5) and a winding end (6) has a rigid reinforcing material (2) inside or outside and / or entirely or partially. ), And a positioning projection (4) for positioning the air-core coil (1) at the mounting position of the substrate (3) on the reinforcing member (2). 2. The winding start end (5) of the air-core coil (1) is drawn out from the inside of the air-core coil (1) and can be connected to a terminal or a circuit of a substrate (3). Item 7. A drive coil for a linear motor according to item 1. 3. The winding end portion (6) of the air-core coil (1) is drawn out of the air-core coil (1) and can be connected to a terminal or a circuit of the substrate (3). The drive coil for a linear motor according to claim 1 or 2. 4. The reinforcing member (2) has a space (7) that can be connected to a winding start end (5) of the air-core coil (1) to a terminal or a circuit of a substrate (3). The drive coil for a linear motor according to any one of claims 1 to 3, wherein: 5. A reinforcing member (2) is provided with a lead-out portion (8) recessed from its surface, and the air-core coil (1) to which the reinforcing member (2) is fixed is attached to a substrate (3). A lead-out space (9) is formed between the lead-out portion (8) and the substrate (3) so that the winding start end (5) derived from the air core coil (1) can be led into the space (6). The drive coil for a linear motor according to any one of claims 1 to 4, wherein: 6. A reinforcing member (2) is provided with a lead-out portion (8) recessed from its surface, and the air-core coil (1) to which the reinforcing member (2) is fixed is attached to a substrate (3). A lead-out space (9) is formed between the lead-out part (8) and the substrate (3) so that the winding end part (6) derived from the air-core coil (1) can be led out of the air-core coil (1). The drive coil for a linear motor according to any one of claims 1 to 5, wherein 7. The reinforcing member (2) is made of a rigid resin,
The drive coil for a linear motor according to any one of claims 1 to 6, further comprising a positioning projection (4) inserted into a positioning hole (14) of the substrate (3). 8. An air-core coil (1) wound with an insulated wire (10) is set in a mold, and the mold is filled with a resin, and the resin is filled inside and / or outside the air-core coil (1). In forming a rigid resin material (2) that is entirely or partially rigid, the winding start end (5) or the winding end (6) of the air-core coil (1) is housed in a part of a mold. Wherein the resin filled in the mold is prevented from adhering to the winding start end (5) or the winding end (6).