JPS61269663A - Linear pulse motor - Google Patents

Abstract

PURPOSE:To simplify the fine adjustment and securing work of a cylindrical linear pulse motor by perpendicularly bending the end of a side plate mounted on the cylindrical hole of a cylindrical stator, and integrally providing a mounting plate parallel to the axial centerline of the stator. CONSTITUTION:The end of a side plate 33 mounted in the cylindrical hole of a cylindrical stator 3 is bent perpendicularly to the stator 3 side with respect to the plate 33 to integrally provide a flat mounting plate 34 parallel to the axial centerline of the stator 3. A linear pulse motor 2 is mounted fixedly by clamping with screws the plate 34 on a flat mounting substrate of a motor-using device. The axial fine adjustment of the motor 2 is performed by sliding the plate 34 with respect to the substrate.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cylindrical linear pulse motor applied to, for example, a floppy head drive of a word processor.

<Summary of the Invention> The present invention provides a linear pulse smoker in which a mover is slidably disposed in a cylindrical stator, and the axial center of the stator is attached to the end of a side plate attached to openings at both ends of the cylindrical stator. A flat mounting plate parallel to the line is integrally installed, and the mounting to the equipment used is fixed and the position adjustment is simplified.

<Prior art> A conventional floppy head drive device, for example,
As shown in FIG. 9, a cylindrical stator 81 of a linear pulse motor 8 is attached to the rear end of the housing 7, and a magnetic head 84 is attached to the tip of a parallel arm 83. When the floppy disk 9 is inserted into the housing 7, the magnetic head 84 contacts both sides of the disk 9, and the magnetic head 84 is moved by the slider 82.
The structure is such that magnetic information is recorded on and reproduced from the floppy disk 9 by the step-by-step movement of the floppy disk (reference documents, U.S. Pat. Nos. 58-97759 and 125202). Since the floppy disk 9 has a standardized concentric magnetic trunk for recording and reproducing data with a certain pinch, it is necessary to match the stop position of the linear pulse motor 8 with the magnetic trunk.

However, the linear pulse smoke 8 compared to the conventional housing 7
The mounting structure includes a positioning wall 71 protruding from the wall of the housing 7.
The cylindrical stator 81 of the linear pulse smoke 8 is engaged between the fixed wall 72 and the fixed wall 72, and the plate spring holding plate 73 is attached to the fixed wall 72, and the stator 81 is pressurized. 74 and is fixed. At this time, the linear pulse smoke 8 of the conventional structure advances stepwise at the same pitch as the magnetic track of the floppy disk 9 in steps of one step or an integer multiple of one step. To position the magnetic head 84 at the origin of the magnetic track,
The linear pulse motor 8 is operated while watching the signal from the magnetic head 84.
It is necessary to finely adjust the entire part in the axial direction.

Since such a linear pulse motor has a cylindrical shape, it is difficult to perform the above-mentioned fine adjustment, especially to hold the motor during adjustment, and the adjustment work and fixing work require a long time.

<Object of the Invention> An object of the present invention is to provide a novel linear pulse motor that simplifies the fine adjustment and fixing work of a cylindrical linear pulse motor and eliminates the above-mentioned disadvantages.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention provides a linear pulse smoker in which a slider is slidably disposed on a cylindrical stator. The stator is bent at a right angle, and a mounting plate parallel to the axial center line of the stator is integrally connected.

According to the above configuration, it is possible to employ a mounting structure in which the mounting plate is joined to the mounting board of the casing and fixed with screws. Therefore, the fixing work is simplified, and by finely adjusting the mounting plate relative to the housing board while the mounting screws are lightly tightened, the linear pulse motor can be easily finely adjusted, positioned, and fixed. Achieve the effect of achieving the purpose.

<Description of Examples> Figure 4 shows a floppy head drive device, with housing 1
A flat motor mounting board 11 is formed at the rear end of the interior, and a straight guide surface 12 is formed on one side of the board 11 to regulate the motor axis and provide slide guidance during fine adjustment.
A linear pulse motor 2 according to the present invention is attached to 1. As shown in FIGS. 1 and 2, the linear pulse smoke 2 of the present invention has a moving element disposed within a cylindrical stator 3. The cylindrical stator 3 has spiral or ring-shaped magnetic pole teeth 31 formed on its inner peripheral surface, side plates 32.33 are attached to openings at both ends, and the stator 3 is mounted between the side plates 31, 33.
A guide shaft 38 is provided corresponding to the center of the cylinder axis, and the slider 4 is slidably supported on the guide shaft 38 via a sliding bearing (not shown). The mover 4 includes a permanent magnet 41 at the center in the axial direction, and yokes 42a and 42b integrally connected to both sides of the permanent magnet 41 in the axial direction.
On the outer periphery of 42b, there is a concave groove 43 that goes around the center in the axial direction.
A coil 44 is wound around the coil 44, and magnetic pole teeth 45, 46, 47° 48 having a pitch corresponding to the pitch of the magnetic pole teeth 31 of the stator 3 are formed on both sides of each coil 44, 44. With respect to the magnetic pole teeth 31 of the stator 3, the I-phase polarization teeth 45 are used as a reference, and the phase separation teeth 46 are 1/2 pitch;
Separation pole teeth 47 are 1/4 pitch, ■ Separation pole teeth 48 are 3/4 pitch.
The phase towards Pifti is shifted.

A pair of parallel arms 51.
51 is fixed, and both arms 51
．． 51 projects outward from the opening of the side plate 32, and has magnetic heads 52 and 52 mounted opposite to its tip.

The present invention provides a flat mounting plate parallel to the axial center line of the stator 3 with its end bent at right angles to the stator side for one side plate 33 attached to the cylindrical opening of the cylindrical stator 3. The mounting plate 34 has a straight reference side 35 formed on a side parallel to the axial center line of the stator 3, and a long mounting hole parallel to the reference side 35. 36 are bored in several places, and the mounting plate 34 is attached to the mounting board 11 in the housing 1.
The reference side 35 is joined to the straight guide surface 12, and each elongated hole 36 portion is fixed with a screw 37. Further, the mounting plate 34 is provided with means 6 for finely adjusting the linear pulse motor 2 in the axial direction.

The adjusting means 6 includes a rack 61 formed on the other side parallel to the reference side 35, and a jig 64 having a pinion 63 on an operating shaft 62 that meshes with the rack 61, and is used for fine adjustment. After lightly tightening the screws 37 on the mounting plate 34, holding the jig 64 in the shaft hole 13 of the mounting board 11 and meshing the pinion 63 and rack 61 (Fig. 5),
By rotating the jig 64, the reference side 35 of the mounting plate 34 slides along the guide surface 12, and the linear pulse motor 2 can be easily finely adjusted and fixed with screws.

FIG. 6 shows a second embodiment of the adjustment means 6.

In this embodiment, a jig 64 includes an upright wall 65 formed by cutting and bending on the side of the mounting plate 34 and a friction roller 66 on an operating shaft 62 that presses against the upright wall 65. As in the previous example, the jig 64 is held in the shaft hole 13 of the mounting board 11, so that the roller 66 comes into pressure contact with the upright wall 65, and the linear pulse motor 2 is slightly moved by rotation.

FIG. 7 shows a third embodiment of the adjustment means, in which:
A notch 67 is provided on the side of the mounting plate 34, and a jig 64 is provided on the side of the mounting plate 34.
The lever 68 is provided with a pivot 69 supported in the shaft hole 13 of the mounting board 11, and a pin 70 that engages with the notch 67 at the tip of the lever 68. By swinging in the horizontal plane, the linear pulse motor 2
moves slightly in the axial direction as in each of the above embodiments.

FIG. 3 shows a mounting plate 34 connected to the side plate 32 on the side from which the actuator 5 is taken out, and the mounting plate 34 is provided with a reference side, a plurality of elongated holes, and adjustment means similar to those in the previous example.

Further, although the illustrated linear pulse smoke 2 shows an example in which the slider 4 is supported on the guide shaft 38 between the side plates 32 and 33, the present invention is not limited to this, and a bearing member may be provided on the outer periphery of the slider 4.
It is also possible to have a structure in which it is directly slidably supported on the inner surface of the stator 3.

As described above, the present invention has the side plate 33 attached to the cylindrical opening of the cylindrical stator 3 bent at a right angle to the stator 3 side so that the side plate 33 is flat and parallel to the axial center line of the stator 3. Mounting plate 34
Since the linear pulse motor 2 is integrally connected, the linear pulse motor 2 can be easily and properly mounted and fixed in particular by fixing the mounting plate 34 with screws to the flat mounting board 11 of the equipment using the motor. Moreover, the mounting plate 3 is different from the mounting board 11.
4 and by sliding the mounting plate 34 in this state, fine adjustment and fixation of the motor 2 in the axial direction can be easily performed, and the desired effect of achieving the object of the invention is achieved.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a linear pulse motor according to the present invention, FIG. 2 is a plan view, FIG. 3 is a side view of another embodiment, and FIG.
Figure 5 shows an example of the use of the linear pulse smoke of the present invention.
The figures are slope views showing the status of motor fine adjustment, Figures 6 and 7.
The figure is a perspective view of another fine adjustment means, Figure 8 is a plan view showing an example of mounting a conventional linear pulse motor, and Figure 9 is Figure 8 I.
It is a sectional view taken along the line X-IX. 2... Linear pulse motor 3...
Stator 31...Magnetic pole teeth 32.33.
...Side plate 3'L...Mounting plate 3
5...Reference side 36...Long hole
4...Movers 45 to 48...Magnetic pole teeth 6...When fine movement adjustment means Applicant Juishi Electric Co., Ltd. Yoshi/Kuchi*t'j18. ．． Ka^ Linear 1 Zurusu Ichishi-y Shiba Kenkekizu 3/, Nuohai 6 Haya 33° control diagram

Claims (3)

[Claims] (1) A linear pulse motor consisting of a cylindrical stator that has magnetic pole teeth on its inner surface and side plates attached to openings at both ends, and a slider that has magnetic pole teeth on its outer periphery and is slidably disposed inside the stator. In the linear pulse motor, the side plate is provided with a flat mounting plate parallel to the axial center line of the stator. (2) The mounting plate is provided with a slide reference side for motor fine adjustment on a side parallel to the axial center line of the stator and a plurality of long mounting holes parallel to the reference side. Linear pulse motor as described. (3) The linear pulse motor according to claim 1, wherein the mounting plate is provided with adjustment means for finely adjusting the stator in the axial direction.