JPH0742999U - Voice coil type linear motor - Google Patents

Abstract

(57) [Summary] [Structure] In a voice coil type linear motor composed of a mover table 1 having an air-core coil 8 and a stator having a permanent magnet 3, the mover table 1 has an empty space. Core coil 8
The cross-sectional shape is a pentagon. [Effect] Since the adhesion area between the air-core coil and the mover table is increased, the adhesion fixing strength is increased and the reliability is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a voice coil type linear motor.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 3, in a small-sized voice coil type linear motor, the mover table 1 and the air core coil 2 are fixed in a small size and in a space, and are bonded on one plane. It was fixed. In the figure, 3 is a permanent magnet, 4 is an inner yoke, 5 is an outer yoke, 6 is a metal sleeve, 7 is a shaft, and A is an adhesive surface.

[0003]

[Problems to be solved by the device]

 However, in the conventional technology, due to the temperature rise of the air-core coil and the improvement of the motor thrust, the adhesive strength of one plane adhesive bond is low, and the reliability is not sufficient, and the adhesive man-hour is required. There is a problem. Therefore, the present invention aims to increase the bonding reliability between the air core coil and the mover table and reduce the bonding man-hour.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the air-core coil shape is a pentagonal base shape, and the bonding surface with the mover table is two surfaces.

[0005]

[Action]

 By the above means, the adhesive fixing strength between the air core coil and the table is increased. Moreover, since the two surfaces are bonded, the positioning of the coil for bonding becomes easy.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a plan view showing a voice coil type linear motor of the present invention, and FIG. 2 is a sectional view taken along line BB in FIG. In the figure, 8 is a mover table, which is supported by two shafts 7 and a metal sleeve 6 and has a V-shaped recess 8a formed on the lower surface. The stator is composed of two outer yokes 5, one inner yoke 4, and two permanent magnets 3. Between the inner yoke 4 and the permanent magnet 3, an air-core coil 9 forms a gap. Is installed through. The air-core coil 9 is formed into a base-shaped pentagon, and the top two surfaces thereof serve as the bonding surfaces A, and are bonded and fixed to the recesses 8 a of the mover table 8. Therefore, the air-core coil 9 is reliably positioned and the adhesive fixing strength is increased.

[0007]

[Effect of device]

 As described above, according to the present invention, in the voice coil type linear motor, since the bonding area between the air core coil and the mover table is increased, the adhesive fixing strength is increased and the reliability is improved. In addition, since the two surfaces are butted, the position of the coil for adhesion can be easily determined, and the number of work steps can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a voice coil type linear motor showing an embodiment of the present invention.

FIG. 2 is a side sectional view taken along the line BB in FIG.

FIG. 3 is a side sectional view showing a conventional example.

[Explanation of symbols]

 1 Movable table 3 Permanent magnet 4 Inner yoke 5 Outer yoke 6 Metal sleeve 7 Shaft 8 Air core coil

Claims (1)

[Scope of utility model registration request] 1. A voice coil type linear motor comprising a mover table having an air-core coil and a stator having a permanent magnet, wherein the cross-sectional shape of the air-core coil of the mover table is 5 A voice coil type linear motor characterized by having a square shape.