JPS59136068A - Scale mechanism of linear pulse motor - Google Patents

Abstract

PURPOSE:To reduce a noise by contacting a contact plate through an adhesive on the back surface of a scale body formed with a toothed part in a linear pulse motor and partially fastening at a plurality of positions, thereby preventing the vibration of the scale. CONSTITUTION:Wheels 12-15 are rotatably provided at shafts 10, 11 at cores 2, 3 on the back surfaces of which permanent magnets 6, 7 are respectively arranged, coils 9a-9d are respectively wound on poles 2a, 2b, 3a, 3b formed with toothed parts which are displaced by 1/4 from each other to form the primary side. A contact plate 18 is contacted through an adhesive 17 with the back surface of a scale 16' having a toothed part 16' of a constant pitch at the secondary side, only body ends are fastened via the adhesive 19 to the scale 16' and the primary side is moved. Accordingly, the contact plate 18 can be rigidly fixed, the vibration of the scale 16' at the operating time can be absorbed by the adhesive 17, thereby reducing the noise.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scale-side mechanism of a linear pulse smoke.

In general, linear pulse smoke moves the next or secondary scale in steps by a certain distance (4-pole type)/4 pitches for each input pulse supplied to the primary coil. . Along with this operation, the linear pulse motor is used for head feeding of various printers that require accurate positioning control, head feeding of rechargeable readers, etc.
It is applied to A equipment. The conventional configuration of this linear pulse smoke is shown in Figures 1 and 2.
be. That is, Fig. 1 is a partially cutaway front view, and Fig. 2 is a partially cutaway side view. In each figure, ] indicates the primary side (usually used as a movable side slider) responsible for generating the magnetic pole of the linear pulse smoke. The two cores 2゜3 are magnetically disconnected at the center of the front, the side plates 4゜5 fix the cores 2 and 3 on both sides, and the polarity shown on the back of each of the cores 2 and 3 is shown. Permanent magnets 6, 7 which are magnetized at
Coils 9a, 9b, 9c, 9d are mounted on magnetic poles 2a, 2b, 3a, 3b formed in
, a shaft 10.11 supported on both sides of each side plate 4, 5.
There are also wheels 2 to 5 which are rotatably supported by the wheels. and each of the magnetic poles 2a, 2b, and 3a.

3b) Teeth 2a with a deviation of /4 pitches,
1.2b1°3a+, 3b+ are formed. ]6
is a scale forming the secondary side of the linear pulse smoke, and the plane has teeth 16 with the same pitch as each of the above magnetic pole teeth 2ai.
a is formed.

When the linear pulse motor shown in FIG. 1 is driven by, for example, a -phase excitation method, each magnetic % 2a, 2b is , 3a, 3b, the teeth 2a1°; 2bi, 3a1.3b1 are sequentially 2
The teeth of the next scale are opposite to each other (in principle) and move forward by 4 pitches.

By the way, the scale structure of the conventional linear pulse smoke is no longer able to meet the increasing demand for noise reduction when the linear pulse smoke is attached to a device and used for actual operation. That is, in the process of sequentially exciting the primary side coils as described above, the scale tooth portion 16a and each primary side tooth jl (2a+, 2b1 .
3aj, 3bj The suction force generated between the slig and the scale 16 changes.

This change causes the scale to vibrate and generate noise. In order to reduce this noise, the vibrations of the scale must be absorbed by some means.

Therefore, it has been considered to put a backing plate such as an iron plate on the back of the scale and not apply a means to dampen the vibration between this plate. From this point of view, it is preferable that it be weak, and from the perspective of several driven devices (such as a printer), it is desirable that it be firmly fixed. Conventionally, the idea was to reduce this noise and ensure a strong mounting (a mounting that would prevent the patch from deforming or completely coming off due to its own weight). It has not been done.

The purpose of this '71 model is to provide a patch plate on the front side of the linear pulse motor scale body using an adhesive (which can be reshaped freely by external force), and to partially join the back side of the scale to the patch plate. Therefore, it is possible to obtain a strong fixation of the cover plate to the scale body and at the same time obtain a noise reduction effect.

Hereinafter, the present invention will be specifically explained with reference to the drawings. Figures 3 and 4 are a front view of a scale of a linear pulse motor and a sectional view taken along line A-A in Figure 3, respectively, showing an embodiment of the present invention. 16'a is a tooth portion. ] 7 is an adhesive, which is interposed between the back of the scale body] 6' and the cover plate] 8,
Both surfaces are in close contact with the back surface of the scale body roller' and the scale facing surface E of the backing plate 8, respectively, and have the property of being freely deformable in response to external force. ] 9 is an adhesive, and the back surface of the scale body] 6' and the opposing surface of the scale body] 6' of the cover plate] 8 are fixed together with both ends (colds) of the scale body 16'. .

In the above configuration, the scale body 6' vibrates every time the scale body 6' is attracted by the magnetic flux G generated from the not-shown secondary side slider magnetic pole teeth. However, the displacement of the scale 16' caused by the vibration is absorbed by the adhesive 8 interposed between the scale body 16' and the cover plate 8, thereby achieving a noise reduction effect.

FIG. 5 is a front view showing another embodiment of the present invention, and parts equivalent to those in FIG. 3 are designated by the same reference numerals.
omitted. Reference numeral 20 connects both ends of the scale roller' (the scale body] 6' and the cover plate] 8 with bolts.

In addition, in each of the above embodiments, an example is shown in which the back surface of the scale is joined at both ends (the number of joints is not limited to two, and is not limited to both ends). For example, the center portion may be fixed and the remaining portion may be illuminated with an adhesive.

As described above, the scale mechanism of the linear pulse smoke according to the present invention has an adhesive between the anti-toothed part of the scale body and the backing plate (both of which are in close contact with each other). Based on this configuration, the noise caused by the vibrations that occur with each step of the linear pulse smoke can be suppressed by applying pressure to the adhesive, cutting it off, and fixing it in place. In addition to being able to suppress the pressure based on the scale, the cover plate is precisely fixed to the scale body, so there is no risk of the cover plate being sheared or deformed or falling.

[Brief explanation of the drawing]

1 and 2 are a partially cutaway front view and a partially cutaway side view of a linear pulse smoke, respectively, FIG. 3 is a cross-sectional view of a scale according to the present invention, and FIG. 4 is A-A of FIG. 3. A sectional view and FIG. 5 are sectional views showing a second embodiment of the present invention. ]6'... Scale body ]6'a... Teeth core... Adhesive 1B... Applicant Atesaka
Shinko Electric Co., Ltd. Agent Patent Attorney Haruya Saito 1st figure 2nd figure

Claims (1)

[Scope of Claims] - Side surface of the scale main body opposite to the teeth on which the teeth for passing linear pulse smoke are formed (The scale body and the backing plate are placed opposite to each other via an adhesive, and the scale main body and the backing plate are connected to one another ( 1. A linear pulse smoke scale mechanism characterized by having means for fixing at a plurality of locations. 2. A linear pulse smoke scale mechanism according to claim 1, wherein an adhesive is used as a fixing means for the scale body and the cover plate. 3. A linear pulse smoke scale mechanism according to claim 1, which uses bolts as means for fixing the scale body and the cover plate.