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Coreless linear motor

A linear motor, ironless technology, applied in electric components, electrical components, electromechanical devices, etc., can solve problems such as unsatisfactory results, and achieve the effect of suppressing temperature rise and small height

Inactive Publication Date: 2005-09-28
YASKAWA DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent this phenomenon as far as possible, in the molding resin 17, an epoxy resin (thermal conductivity 1.5W / mK) with good thermal conductivity, for example, mixed with aluminum oxide (thermal conductivity 1.5W / mK) is used, but a satisfactory effect cannot be obtained.

Method used

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  • Coreless linear motor
  • Coreless linear motor
  • Coreless linear motor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0027] Fig. 1 (a), (b) is a diagram showing the first embodiment, and is a diagram related to 1 and 2 of the present invention. Fig. 1(a) is a cross-sectional view seen from the moving direction of the mover, and Fig. 1(b) is a cross-sectional view of the mover seen from the side.

[0028] The mover 10 of the first embodiment is the same as the prior art, consisting of an armature winding 11 with a plurality of coils 13, a mover mounting table 12 for fixedly supporting the armature winding 11, a wire 16, covering the armature winding 11 and Lead wire 16 is integrally formed of molded resin 17 . Here, taking three phases as an example, an armature winding composed of three concentric winding coils 13 having the smallest number of coils is shown. Directly below the lower sides 15 of the three coils, there is provided a space for connecting the coils 13 or the wires 16 . The lead wire 16 is drawn to the mover mounting table 12 in front of the mover 10 through the lower sides 15...

no. 2 example

[0031] Next, a second embodiment will be described.

[0032] The second embodiment relates to item 3 of the present invention. figure 2 It is a figure which shows the cross section seen from the traveling direction. The second embodiment differs from the first embodiment in that spaces for connection processing are provided on the left and right sides of the lower side 15 of the coil. The result is that the cross section of the mover becomes an I-shape.

[0033] According to this configuration, as in the first embodiment, the temperature rise of the coil 13 can be greatly reduced. The second embodiment is also characterized in that since the connection processing space is provided directly under the permanent magnet 2, the size of the mover in the height direction can be reduced.

no. 3 example

[0035] Next, a third embodiment will be described.

[0036] The third embodiment relates to item 4 of the present invention. image 3 It is a figure which shows the cross section seen from the traveling direction. The difference between the third embodiment and the first or second embodiment is that a cooling passage 18 for circulating refrigerant or air is provided on the mover installation platform 12 .

[0037] According to this structure, since the cooling heat can pass directly through the large mover mounting table 12, it is possible to further enhance the temperature rise of the reduction coil 13 which is the effect of the first and second embodiments.

[0038] The present invention can be used to manufacture and provide coreless linear motors for fixed-speed transmission or high-precision positioning that require small thrust pulses and low heat generation.

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PUM

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Abstract

A coreless linear motor in which increase of the temperature of the armature winding is reduced. A linear motor in which a mover (10) is composed of an armature winding (11) comprising coils (13) and a mover mounting base (12) supporting the armature winding (11), a stator (1) is composed of permanent magnets (2) having magnetic poles and a back yoke (3), and the armature winding (11) is sandwiched by the permanent magnets (2) with gaps therebetween, wherein a recess (12a) is provided in the lower face of the mover mounting base (12), the upper portions (14), or the tops of the coils (13) are inserted into the recess (12a) of the mover mounting base (12), and a space for connection between the coils (13) or the coils to lead wires (16) is provided near the lower portions (15), or the bottom of the coils (13).

Description

technical field [0001] The present invention relates to an iron-coreless linear motor, in particular to an iron-coreless linear motor for constant-speed transmission or high-precision positioning that requires small thrust fluctuation and low heat generation. Background technique [0002] Conventional coreless linear motors in which coils of concentric windings are not overlapped are disclosed in JP-A-7-322595, JP-A-6-165474, and US4151447. These disclosed coreless linear motors are characterized in that no cogging force is generated due to the absence of an iron core, that is, the speed fluctuation is small. In addition, as another feature, since the coils of the concentric winding are not overlapped, the insulation is high. [0003] Figure 4 with Figure 5 Indicates a conventional ironless linear motor. Figure 4 It is a perspective view showing only a mover and a stator of a conventional coreless linear motor. Figure 5 is a cross-sectional view seen from the moving d...

Claims

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Application Information

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IPC IPC(8): H02K9/19H02K3/47H02K5/22H02K41/02H02K41/03
CPCH02K3/47H02K41/031H02K5/22H02K9/19H02K5/20H02K15/105
Inventor 鹿山透入江侣幸
Owner YASKAWA DENKI KK