JPH0974735A - Linear motor and linear motor assembling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the highly reliable linear motor, wherein a moving piece can move silently. SOLUTION: A stringing 30 is constituted as a unitary body, one end part 30a is fixed to the stringing-coupling part of a first rail assembly 10A, and another end part 30b is made to extend from a side end 10a of the first rail assembly 10A. Then, the end part 30b is coupled into the stringing coupling groove of the second rail assembly in assembling. Since there is no joint in the stringing 30, abnormal noise is not produced at the moving piece in passing through the joint. Furthermore, the fault caused by the faulty connection at the joint does not occur.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a split type long moving coil type linear motor, and a linear motor assembly structure constituting the linear motor.

[0002]

2. Description of the Related Art At present, in houses, office buildings, hotels, etc., linear motors have been used for curtain rails for electrically opening and closing curtains. Here, especially in hotels and office buildings, a long curtain rail of 4 m or more may be required. Here, if a linear motor (curtain rail) of the required length is manufactured integrally, it will not be possible to put it on a small truck, elevator, etc. due to its full length, making it difficult to transport and at the installation site. Workability also deteriorates.

Therefore, a long curtain rail is divided into a plurality of pieces (usually divided into two pieces) and manufactured, and the pieces are connected to each other at a mounting site to have a required length. The applicant of the present invention has proposed a split type linear motor coupling structure in Japanese Utility Model Laid-Open Publication No. 1-162778. In the linear motor of Japanese Utility Model Laid-Open No. 1-162778, as shown in FIG. 10, the first linear motor assembly 110A and the second linear motor assembly 110B are bent along the guide member 132A at the connecting portion 115 thereof. Overhead wire 130
A and overhead wire 130B bent along the guide member 132B
And are connected to each other to connect the overhead line 130A and the overhead line 130B.

[0004]

However, in the above technique, since a step is formed at the joint portion 115 between the overhead wire 130A and the overhead wire 130B, the brush 154 moves up and down at the joint portion 115 when the mover 150 travels. There was a strange noise when rocking. In addition, overhead wire 130A
Since the connection is made by abutting and the overhead wire 130B, a contact failure between the overhead wire 130A and the overhead wire 130B is likely to occur, causing a failure. Further, since the guide members 132A and 132B are used for connection, the structure is complicated and the connection work takes time.

The linear motor of the present invention has been made to solve the above-mentioned problems, and an object of the linear motor is to provide a linear motor which allows the mover to run quietly and has high reliability. Especially.

According to the linear motor assembly structure of the present invention, the assembly is easy, the constituent parts can be protected during transportation, and damage to the constituent parts which causes a failure can be prevented. To provide.

[0007]

In order to achieve the above object, in a linear motor 10 according to a first aspect of the present invention, a plurality of divided rail bodies 10A and 10B and the inner surfaces of the rail bodies 10A and 10B are provided. A mover 50 including a plurality of attached permanent magnets 42 and a plurality of armatures 52A, 52B, 52C loosely fitted in the rail bodies 10A, 10B.
And the armatures 52A and 5A corresponding to the permanent magnets 42.
Predetermined electrode pattern 32 for supplying power to 2B and 52C
Commutator 30 in which A and 32B are arranged at the same pitch, and the electrode pattern 32A attached to the mover 50,
A brushless motor for contacting the armatures 52A, 52B, 52C and a brush 54 for supplying electric power to the armatures 52A, 52B, 52C. The fitting portion 20c is formed, the commutator 30 is configured as one body, and the one end portion 3 is formed.
The outline is that 0a is fixed to the fitting portion 20c of the rail body 10A of 1 and the other end 30b is fitted to the fitting portion 20c of the other rail body 10B.

According to a second aspect, in the first aspect, the rail bodies 10A and 10B are provided with a groove 20f on an inner surface thereof, and an extending portion 2 for suspending the rail body is provided on an upper portion thereof.
0a, 20a are formed, and the rail body 1 of the above 1
0A and another rail body 10B communicate with the groove 20f of the one rail body and another rail body, and the extension portion 20a of the one rail body and another rail body. , 20a are held together by a holding member 80 for holding.

In order to achieve the above object, in the linear motor assembly structure according to claim 3, a plurality of permanent magnets 42 are fixed to the inner surface and a fitting portion 20c for accommodating the commutator 30 is formed on the inner surface. , The first and second rail bodies 10A and 10B in which the groove 20f for inserting the connecting pin 82 is formed, and the predetermined electrode patterns 32A and 32B corresponding to the permanent magnet 42 are arranged at the same pitch. In the commutator 30, the one end 30a is fixed to the fitting portion 20c side of the first rail body 10A, and the other end 30b is
Inside the first and second rail bodies 10A and 10B, a commutator 30 extending from the end surface 10a of the first rail body 10A so that the commutator 30 can be fitted into the fitting portion 20c of the second rail body 10B. A plurality of armatures 52A to be loosely fitted in
A mover 50 composed of 2B and 52C, which is in contact with the electrode patterns 32A and 32B.
The mover 50 having a brush 54 for supplying power to B and 52C, the end surface 10a of the first rail body 10A on the side extending the commutator 30 and the side of the second rail body 10B on which the commutator 30 is fitted. Protective member 78A removable from the other end surface
And the other end 30b of the commutator 30 is bent and folded inside the first rail body 10A, and a connecting pin 82 is provided upright in the groove 20f of the end surface 10a of the first rail body. At the same time, the gist is that the protection member 78A is attached to the end face 10a.

[0010]

In the linear motor according to the first aspect of the invention, the commutator 30 is constructed as one body, and the rail main body 1
Since the commutator 30 does not need to be connected between 0A and the rail body 10B, the structure is simple. Further, since the commutator 30 has no seam, no abnormal noise is generated in the mover 50 when passing through the seam, and no failure due to connection failure occurs at the seam.

Further, in the linear motor according to the second aspect of the present invention, the pin 82 is communicated with the groove 20f, and the extending portions 20a, 20a for suspension are held by the holding member 80, whereby the rail main body 10A, 10B can be connected to each other. Therefore, the connection is easy.

In the linear motor assembly structure according to the third aspect of the present invention, the commutator 30 extending from the first rail body 10A is configured to be fitted to the second rail body 10B side, and the rail body 10A. Since it is not necessary to connect the commutator 30 between 10B, the assembly is easy. Moreover, since the other end 30b of the commutator 30 extending from the first rail body 10A is bent and folded inside the first rail body 10A, the commutator 30 is exposed from the first rail body 10A. Therefore, the commutator 30 is not damaged during transportation. Further, the protection member 78A is attached to the end surface 10a of the first rail body 10A on the side extending the commutator 30 to prevent the commutator 30 from protruding from the end surface 10a during transportation and being damaged, and after assembly, The linear motor can be protected by being attached to the end surface of the second rail body 10B (the end surface of the linear motor 10). That is, the protection member 78A of the linear motor can protect the commutator 30 during transportation.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. The linear motor according to the first embodiment of the present embodiment is used for a left and right two-part split type curtain rail, as shown in FIG. 1, and has a first rail assembly 10A on the right side and a second rail assembly 10B on the left side. It consists of and. In this linear motor 10, the first rail assembly 10A and the second rail assembly 10B have a joint fitting 80 and a joint pin 8
It is connected by 2 and. In the linear motor 10, the electric power supplied through the plug 84 is transmitted to the mover 50 through the overhead wire 30 that is integrally configured, and the mover 5 is connected.
0 runs in the linear motor 10.

First, the structure of the linear motor of this embodiment will be described. 2 is a perspective view showing components of the linear motor, and FIG. 3 is a first rail assembly 10A.
It is a front view of the connection end face of. This linear motor is shown in FIG.
As shown in FIG. 5, the stators 40A and 40B are housed in the outer rail 20, and the mover 50 is slidably housed in the outer rail 20 in the longitudinal direction. The outer rail 20 is formed in a substantially U-shaped cross section, and as shown in FIG. 3, a pair of magnet fitting grooves 20e, 20e having a substantially U-shaped cross section is formed at an intermediate portion in the vertical direction between the pair of side walls 20k, 20k. Is provided.

Stator 40A, 40B consisting of permanent magnet 42 and yoke 44 is housed in each magnet fitting groove 20e, 20e along the longitudinal direction thereof. Stator 4
The 0A-side permanent magnet 42 has a plurality of magnetized portions 42A, 42B, 42C, ... (See FIG. 2) formed in its longitudinal direction, and these magnetized portions 42A, 42B, 42C ,.
Are magnetized in the thickness direction of the permanent magnet 42, respectively. In such a case, each of the magnetized portions 42A, 42B, 42C,
, The magnetized polarities of the magnetized portions adjacent to each other are opposite to each other.

On the other hand, the permanent magnets 42 on the side of the stator 40B are similarly magnetized in the plate thickness direction, and the magnetized magnetic polarities of the adjacent magnetized portions are opposite to each other. Also, the stator 4
On the 0A side and the stator 40B side, the opposing magnetic poles of the two magnetized portions of the permanent magnets 42, 42 that face each other have opposite magnetic polarities.

As shown in FIG. 3, on the lower surface of the upper wall 20m of the outer rail 20, projecting pieces 20d, 2 pointing inward are provided.
An overhead wire fitting groove 20c for accommodating the strip-shaped overhead wire 30 is formed by 0d. The overhead wire 30 is made of an insulating film having flexibility, and both electrode patterns 32A and 32B have a bent narrow gap 3 along the longitudinal direction as shown in FIG.
It is formed in a pattern shape through 2C. The electrode patterns 32A and 32B are made of a copper foil having a shape shown in the figure, and are configured to repeat a predetermined pitch so as to correspond to the pair of permanent magnets.

As shown in FIG. 3, the mover 50 has a pair of left and right magnet fitting grooves 20e, 20 within the outer rail 20.
e are slidably interposed along the longitudinal direction between them.
As shown in FIGS. 2 and 3, the mover 50 is provided with a longitudinal plate-shaped head wall 56. The head wall 56 is provided on each upper wall 20j of the left and right magnet fitting grooves 20e, 20e. It is mounted so as to be slidable in the longitudinal direction.

The mover 50 is a rectangular parallelepiped body 5.
The body 58 is provided so as to hang from the center of the head wall 56 in the left-right direction between the opposite ends of the left and right magnet fitting grooves 20e, 20e so as to be movable in the longitudinal direction. (See Figure 3). As shown in FIG. 2, the body 58 includes three substantially columnar armatures 52A, 52B and 52C,
Each of these armatures 52A, 52B and 52C has a body 58
Built in. The armature 52C includes a cylindrical core 59 as shown in FIG. 3, and the axial direction of the core 59 is parallel to the magnetizing directions of the magnetizing portions of the permanent magnets 42 of the stators 40A and 40B. (That is, both permanent magnets 42, 42
Vertical to the longitudinal direction). A coil 57 is wound around the core 59, and the magnetization direction of the axis of the core 59 is determined according to the polarity of the DC voltage applied to the brushes 54, 54 connected to the coil 57.

Further, as shown in FIG. 2, the pair of brushes 54, 54 are respectively formed so as to project on the front end portion of the upper surface of the head wall 56 corresponding to the armatures 52A, 52B, 52C, and the tip portions thereof. At both electrode patterns 32A of the overhead wire 30,
It comes in contact with one side of 32B.

A rail end 70 is provided at the end of the linear motor 10, and the mover 50 is configured to come into contact with a cushion end 72 attached to the rail end 70 and stop.

As shown in FIG. 3, on the upper portion of the upper wall 20m of the outer rail 20, horizontal pieces 20a, 20a extending outward for attaching the outer rail 20 to a window frame (not shown) of a building or the like. And a horizontal piece 20 extending inward
b and 20b are formed. In addition, a pin fitting groove 20f for fitting the joint pin 82, which is a spring pin, is formed at a substantially central portion of the outer rail 20.

At the lower end of the mover 50, a hanging metal fitting 86 is provided.
The leading runner 74 is connected via a. The lower end of the lead runner 74 projects downward from the opening 20h of the outer rail 20. The wheel 74a attached to the leading runner 74 is configured to roll on horizontal pieces 20g, 20g formed at the lower end of the outer rail 20. Inside the outer rail 20, a runner 7 that suspends a curtain (not shown) together with the leading runner 74.
6 are arranged. This runner 76 is a wheel 76
It is configured to roll the horizontal pieces 20g, 20g at a.

In the linear motor 10 according to the first embodiment, the pair of first rail assemblies 1 are connected to each other by the overhead wire 30 formed in one body.
Power is supplied to 0A and the second rail assembly 10B. First,
4 and 5 for the configuration of the first rail assembly 10A.
This will be described with reference to FIG. FIG. 4 shows the first rail assembly 10A.
5 is a side view and FIG. 5 is a perspective view. As shown in FIG. 4, one end portion 30 a of the overhead wire 30 has the first rail assembly 1
It is fixed to the rail end 70 (see FIG. 2) of 0A. At the rail end 70, the power supply line 90A from the plug 84 is connected to the electrode pattern 32A (see FIG. 5) of the overhead wire 30, and the power supply line 90B is connected to the electrode pattern 32B. Power is supplied to the pattern 32B. The other end 30b of the overhead wire 30 extends from the end surface 10a of the first rail assembly 10A as shown in FIG. 5, and as described later, the overhead wire fitting groove 20c of the second rail assembly 10B.
Be inserted into. The second rail assembly 10B is the same as the first rail assembly 10A except that the overhead wire 30 is not provided.
It is configured in the same manner as.

Next, the protection of the overhead wire 30 before the linear motor 10 is assembled will be described. FIG. 6 shows the first
The side surface of the rail assembly 10A is shown. The end portion 30b of the overhead wire 30 extending from the first rail assembly 10A is
It is bent and accommodated in the first rail assembly 10A. The end surface 10a of the first rail assembly 10A is shown in FIG.
The joint pin 82 is erected in the pin fitting groove 20f shown in (1) and the cap end 78A is attached. That is, by housing the end portion 30b of the overhead wire 30 extending from the first rail assembly 10A in the first rail assembly 10A, the overhead wire 30 is exposed.
This prevents the conductive patterns 32A and 32B of the overhead wire 30 from being damaged during transportation and causing a failure in energization. The joint pin 82 protrudes from the end surface 10a by a distance k in the figure, and the overhead wire 3 extends from the overhead wire fitting groove 20c (see FIG. 3).
The protruding portion of 0 (indicated by h in the drawing) is bent at a right angle to prevent the conductive patterns 32A and 32B from peeling off from the overhead wire 30 and causing a failure.

FIG. 7 shows the assembly of the first rail assembly 10A and the second rail assembly 10B. The first rail assembly 10A and the second rail assembly 10B are assembled by the joint pin 82 and the joint fitting 80. The joint fitting 80 is provided with curved portions 80b, 80c at its edge for holding the horizontal pieces 20a, 20a (see FIG. 3) of the outer rail 20.

First, the first rail assembly 10A shown in FIG.
Remove the cap end 78A from. The end 30 of the overhead wire 30 extending from the first rail assembly 10A
b is fitted into the overhead wire fitting groove 20c (see FIG. 3) of the second rail assembly 10B, and then the joint pins 82 and 82 provided upright on the first rail assembly 10A are fitted to the second rail assembly 10B. Fit into the pin fitting grooves 20f, 20f (see FIG. 3). Then, the curved portions 80b and 80c of the joint metal fitting 80 are fitted into the horizontal pieces 20a and 20a of the first rail assembly 10A and the second rail assembly 10B, and the tightening metal fitting 81 is attached from the lower side to the screw hole 80a. By tightening the screw 88 on the horizontal piece 20a, 20a
Is held between the curved portions 80b and 80c. Finally, the cap end 78A is attached to the end surface on the second rail assembly 10B side, and the assembly work is completed.

In this first embodiment, the end 30b of the overhead wire 30 is simply inserted into the second rail assembly 10B side, and the overhead wire 30 is not displaced, so that the overhead wire 30 need not be fixed. . However, the second rail assembly 10
The overhead wire 30 may be fixed to the B rail end 70 (see FIG. 2). When the linear motor is long and the voltage drop in the overhead wire 30 is large, the second rail assembly 1
Also from the rail end 70 on the 0B side, the first rail assembly 1
It can be configured to supply electric power together with the 0A side.

Next, the operation of the linear motor of the first embodiment will be described with reference to FIG. 8 showing a vertical section of the linear motor. When power is supplied to the overhead wire 30, the mover 5 is moved through the brush 54 by the conductive patterns 32A and 32B.
A current flows through each of the 0 armatures 52A, 52B, and 52C to generate magnetic flux. These armatures 52A, 52B, 52C
A thrust force is generated in the mover 50 due to the interaction between the magnetic flux and the permanent magnet 42. In the linear motor 10 of the first embodiment, unlike the linear motor of the related art described above with reference to FIG. 10, power is supplied by one overhead wire 30, so that the mover 50 runs on the connecting portion 15. Also in this case, the swinging of the brush 54 that causes abnormal noise does not occur. Further, since the overhead wire 30 is integrally configured and has no joint, the contact failure that occurs at the joint of the overhead wire of the conventional linear motor does not occur.

Next, a linear motor according to a second embodiment of the present invention will be described with reference to FIG. First mentioned above
In the linear motor 10 of the embodiment, the linear motor is composed of the two rail assemblies of the first rail assembly 10A and the second rail assembly 10B, but in the second embodiment, three linear assemblies are used. It consists of a rail assembly. That is, the second rail assembly (not shown) is connected to the left side of the first rail assembly 10A shown in the drawing, and the third rail assembly (not shown) is connected to the right side thereof. Is configured.

FIG. 9 shows the first rail assembly 10A before assembly.
The side of is shown. The overhead lines 30 for the three third rail assemblies are integrally formed. First rail assembly 10A
The end portion 30b of the overhead wire 30 incorporated in the second rail assembly extending from the left end surface 10a is accommodated in the first rail assembly 10A. Similarly, the end portion 30c of the overhead wire 30 incorporated in the third rail assembly extending from the right end surface 10c of the first rail assembly 10A is accommodated in the first rail assembly 10A. These overhead lines 30
The end portions 30b and 30c of the are protected by the joint pin 82 and the cap ends 78A and 78B in the same manner as in the first embodiment.

In the above-described embodiments, the divided structure of the linear motor used for the curtain rail has been described. However, the connecting portion structure of the linear motor of the present invention is used for a purpose other than the curtain rail, for example, a linear motor for conveying articles. It goes without saying that it can also be used for a motor or the like.

[0033]

As described above, in the linear motor according to the present invention, the commutator is constructed as one body, and it is not necessary to connect the commutator, so the structure is simple. Further, since the commutator does not have a joint, no abnormal noise is generated in the mover when passing through the joint, and a failure due to a connection failure does not occur at the joint.

Further, in the linear motor assembly structure according to the present invention, it is not necessary to connect a commutator, so that the assembly is easy. Further, since the other end of the commutator extending from the first rail assembly is bent to be folded inside the first rail assembly, the commutator is not exposed and is not exposed during transportation. Does not damage the commutator.

[Brief description of drawings]

FIG. 1 is a side view of a linear motor according to a first embodiment of the present invention.

FIG. 2 is a perspective view of components of the linear motor shown in FIG.

FIG. 3 is an end view of a first linear motor assembly.

FIG. 4 is a side view of a first linear motor assembly.

FIG. 5 is a perspective view of an end surface of the first linear motor assembly.

FIG. 6 is a side view of a first linear motor assembly.

FIG. 7 is a perspective view showing a connecting portion of the linear motor of the first embodiment.

FIG. 8 is a vertical cross-sectional view of the linear motor according to the first embodiment.

FIG. 9 is a side view of a first linear motor assembly of the linear motor according to the second embodiment.

FIG. 10 is a vertical sectional view of a conventional linear motor.

[Description of Reference Signs] 10 linear motor 10A first linear motor assembly 10B second linear motor assembly 20 outer rail 20c overhead wire fitting groove 20f pin fitting groove 30 overhead wires 40A, 40B stator 42 permanent magnet 50 mover 52A, 52B, 52C Armature 54 Brush 78A Cap end 80 Joint metal fitting 82 Joint pin

Claims (3)

[Claims] 1. A rail body divided into a plurality of pieces, and a plurality of permanent magnets fixed to the inner surface of each rail body,
A mover that is loosely fitted in the rail body and is composed of a plurality of armatures, a commutator in which predetermined electrode patterns corresponding to the permanent magnets and for supplying power to the armatures are arranged at the same pitch, and the mover includes A linear motor comprising a brush attached to the electrode pattern for supplying power to each armature, wherein a fitting portion for accommodating the commutator is formed in each of the plurality of rail bodies. A linear motor characterized in that the commutator is constructed as one body, one end of which is fixed to a fitting portion of one rail body, and the other end of which is fitted into a fitting portion of another rail body. . 2. The rail main body is provided with a groove on an inner surface thereof, and an extension portion for suspending the rail main body is formed on an upper portion of the rail main body. It is characterized by being connected by a pin communicating with the groove of one rail main body and another rail main body, and a holding member for holding the extended portion of the one rail main body and another rail main body. The linear motor according to claim 1. 3. A first and a first member, wherein a plurality of permanent magnets are fixed to the inner surface, and a fitting portion for housing the commutator and a groove for inserting a connecting pin are formed on the inner surface. A second rail body and a commutator in which predetermined electrode patterns corresponding to the permanent magnets are arranged at the same pitch, one end of which is fixed to the fitting portion side of the first rail body, and the other end of which is the first rail body. A commutator that extends from the end surface of the first rail body so that it can be fitted into the fitting portion of the two rail body, and a plurality of armatures that are loosely fitted in the first and second rail bodies. A mover having a brush for coming into contact with the electrode pattern and supplying power to each armature, a commutator of the first rail body, and a commutator of the second rail body. A liner consisting of a removable protective member on the other end of the child It is a linear motor assembly structure for constituting an motor, wherein the other end of the commutator is bent and folded into the inside of the first rail body, and is connected to the groove on the end surface of the first rail body. A linear motor assembly structure in which a pin is provided upright and the protection member is attached to the end face.