JPH099596A - Two-phase coreless flat vibration motor - Google Patents

Abstract

PURPOSE: To generate longitudinal vibrations which give a desirable feeling by making a rotor so that an armature for vibrations is opposed to a field magnet in their surfaces through an air-gap in the axial direction and sliding a brush on a commutator provided in the rotor. CONSTITUTION: In a vibration motor 1-1, two pieces of U-phase and V-phase air-core type coreless armature coils 3U-1, 3V-1, 3U-2, 3V-2 are disposed in the two-phases of two layers by using a 6-pole field magnet 15. and a semicircular plate-form two-phase flat type coreless eccentric vibration armature 6-1 is opposed to a field magnet 15 in their surfaces through an air-gap in the axial direction. When the armature 6-1 is eccentrically rotated in partially circular motion in a predetermined direction, the sliding position between brush parts 13-1, 13-2 and a commutator piece is changed over, continuous rotational torque is generated and at the same time the armature 6-1 causes partially circular motion and at the same time is eccentrically rotated. Lateral and longitudinal vibrations generated by vibrations and torque change due to an eccentric quantity in the radial and circumferential directions are transmitted to a motor main body. As a result, the longitudinal vibrations which give a desirable feeling can be generated.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The coreless flat type vibration mode of the present invention.
The device can provide a calling device such as a pager that transmits a call by vibration in a small radio, a signal receiver for the hearing impaired, a device that transmits a predetermined signal, and a light vibrator to the human body. It is suitable for massaging devices that require massaging effect or light vibration.

[0002]

2. Description of the Related Art For example, in a typical pager as a calling device for a small radio device, in order to notify a person carrying the phone that the phone is called, in addition to calling by a sounding device inside the pager, It is made known that the call was made by the vibration. Especially in recent years, the vibration warning function is very important in the pager.

A vibration motor is used as this vibration generator, and there are two types of vibration motors in terms of shape. They are a cylindrical vibration motor and a flat vibration motor.

A typical example of the cylindrical vibration motor is a radial gap type cylindrical coreless vibration motor, which is a highly specific heavy metal such as expensive tungsten such as a rotary shaft protruding from the end surface of the cylindrical coreless motor. The resulting eccentric weight is attached with an adhesive or a crimping means. Since the eccentric weight is for eccentrically oscillating by performing a partial circular motion, the shape viewed from the rotation axis direction is semicircular or fan-shaped so as not to form a regular disk shape.

When the cylindrical coreless vibration motor is rotated, the eccentric weight is partially circularly moved, that is, eccentrically rotated, so that the vibration generated by the centrifugal force generated at that time propagates to the pager housing. Therefore, the vibration is transmitted to the person wearing the pager, and it is possible to know that the telephone call is made.

Such a cylindrical coreless vibration motor has been dealt with by many manufacturers as compared with the flat type vibration motor, and is a mainstream of the vibration motor. In particular, in the case of a pencil type or cigarette case type pager having a relatively large diameter, since the thickness is sufficient, it is advisable to use the above cylindrical coreless vibration motor.

With the widespread use of pagers, card type pagers have been required from the viewpoint of design and function. In the case of such a card type pager, the conventional cylindrical coreless vibration motor cannot be built in since it is very thin, and only a warning function is provided by the sounding device.

With the demand for a vibration warning function for card type pagers as well, flat type vibration motors have emerged and have come to be built into card type pagers.

Such a flat type vibration motor has a short history, and as shown in Japanese Utility Model Laid-Open No. 63-88060, a weight is first attached to an appropriate portion of a disc type rotary armature of a three-phase flat commutator motor. It was attached. Flat type vibration motor also has a diameter of 20 m
Since the thickness must be as small as 3 mm or less, it is not possible to obtain vibration suitable for practical use simply by attaching a weight.

Therefore, the rotating armature of the above-mentioned three-phase flat commutator motor has three air-core type armature coils, but has the heaviest specific gravity among the disc type rotating armatures. Since the one is an armature coil, one of the three armature coils is omitted, and at the same time, the excess part is omitted and two armature coil groups are eccentrically arranged. And a two-phase (three-phase armature with one armature coil arrangement) eccentric rotation while taking an eccentric center of gravity, and a flat coreless eccentric vibration armature. There is one disclosed in Japanese Patent Laid-Open No. 63-290153.
The coreless flat type vibration motor disclosed therein promoted the practical application of the flat type vibration motor suitable for a pager.

As one of the flat type vibration motors, which is an improvement of the one shown in the above-mentioned Japanese Patent Laid-Open No. 63-290153, there is the one shown in Japanese Utility Model Laid-Open No. 2-33573. this is,
The coreless flat type vibration motor disclosed in JP-A-63-290153 originally has three armature coils.
Since one armature coil has been deleted from the phase rotating armature, the three armature coils are arranged on one side so as to return to the three-phase rotating armature. This is an armature for phase flat type coreless eccentric vibration.

[0012]

The coreless flat type vibration motor is suitable for a card type pager because of its thinness, but the direction of vibration is different from that of the cylindrical type vibration motor. Both the cylindrical vibration motor and the coreless flat vibration motor use centrifugal force as a vibration source. Since the cylindrical vibration motor is laid out on the surface of the pager housing, that is, because the axial center line and the surface of the pager housing are parallel to each other, the direction perpendicular to the surface of the pager housing is shown. Give the vibration of. This is essentially
Although the cylindrical vibration motor itself does not vertically vibrate, if the cylindrical vibration motor is laid down on the surface of the pager housing surface that is in contact with the human body, the cylindrical vibration motor will result in a cylindrical vibration. The pager with a built-in motor gives the human body a longitudinal vibration that is sensible to the human body.

On the other hand, in the coreless flat type vibration motor, since the axial center line and the surface of the pager housing are in a vertical relationship, vibration is applied in a direction parallel to the surface of the pager housing. Therefore, the coreless flat type vibration motor itself does not vibrate vertically. Moreover, since the coreless flat vibration motor in the pager housing vibrates in the lateral direction of the pager housing that is in a right-angled relationship with the surface of the pager housing that is in contact with the human body, it has a cylindrical shape. Even if the vibration motor is arranged inside the pager casing, unlike the vibration motor of the cylindrical type, as a result, it does not give the human body a preferable vertical vibration.

Therefore, in order to compensate for the drawbacks of the flat type vibration motor which does not give the human body a preferable longitudinal vibration, it is necessary to obtain a larger vibration. More preferably, it is particularly desirable to be able to give vibration in a direction perpendicular to the surface of the pager housing.

However, the conventional Japanese Patent Laid-Open No. 63-290153
The coreless flat type vibration motor disclosed in the publication is a two-phase coreless flat type vibration motor in which one armature coil is removed from the three-phase coreless flat type motor coil to have two armature coils.
However, the relationship between the commutator and the brush is a three-phase motor structure, and since there are only two armature coils, it is necessary to devise more in order to generate larger vibration.

Further, 3 shown in Japanese Utility Model Laid-Open No. 2-35733
In the case of a two-phase coreless flat type vibration motor, the above-mentioned Japanese Patent Laid-Open No.
It is an improvement of the coreless flat type vibration motor shown in Japanese Patent Publication No. 290153, and it has three armature coils of u, v, and w phases, and it seems that the efficiency of generating a large torque is apparent. . However, since the opening angle width between the two effective conductor portions extending in the radial direction of all three armature coils is formed in a fan frame shape having an opening angle width extremely narrower than one magnetic pole width of the field magnet, Torque is applied and it is difficult to obtain larger vibration anymore. Further, as a matter of course, since it is not possible to obtain a preferable longitudinal vibration (axial direction) vibration for the human body, it is not possible to obtain a vibration that is excellent in sensation.

In the flat type vibration motor, the armature coil has the highest specific gravity among the components of the flat type coreless eccentric vibration armature, and the armature coil itself serves mainly as an eccentric weight. Along with that, a rotational torque is generated. However, in the case of the conventional three-phase coreless flat type vibration motor, only at most three armature coils can be arranged, and a larger rotating torque can be generated.
The weight of the flat coreless eccentric vibration armature that functions as an eccentric weight could not be increased, and it was difficult to generate a larger vibration.

Furthermore, in the case of the conventional three-phase coreless flat type vibration motor, only a maximum of three armature coils can be arranged, so that there are many restrictions on the arrangement method of the armature coils. That is, since the armature coil has a small degree of freedom in arrangement, even if another member for obtaining longitudinal vibration is to be arranged in the flat coreless eccentric vibration armature, the actual open flat plate is
An armature coil having a small opening angle width, such as the three-phase coreless flat type vibration motor disclosed in Japanese Patent No. 573, must be used, and a member for obtaining longitudinal vibration in the cavity portion of the armature coil in the frame. There is no space to install, or even in other cases, there is no space to install a member that generates vertical vibration other than the cavity inside the frame of the armature coil, so very small vertical vibration is generated. However, there are drawbacks in that it is only possible to use a member that makes it possible to obtain longitudinal vibration, or to obtain only small longitudinal vibration.

That is, an object of the present invention is to construct an armature for flat coreless eccentric vibration by using an armature coil having a high anti-torque efficiency and to have a greater freedom in arranging the armature coil. The weight of the flat coreless eccentric vibration armature that functions as an eccentric weight is increased by increasing the rotational torque so that more armature coils can be arranged. As a result, it is possible to generate a larger vibration, and it is possible to arrange a member capable of generating a longitudinal vibration using an optimal size at an appropriate position, and to increase the size. (EN) A coreless flat type vibration motor capable of generating a desired vertical vibration.

Incidentally, in the case of the conventional three-phase coreless flat type vibration motor, a commutator consisting of six commutator pieces is used, but this can be constructed by using the same one in the present invention.
The number of commutator pieces is preferably small in order to be inexpensive and easy to obtain accuracy. In the case of the coreless flat type vibration motor of the present invention, the number of such commutator pieces may be small depending on the specifications. It can be configured using a commutator.

[0021]

The object of the present invention is to provide P (P is an integer of 2 or more) pole pairs of N poles and S poles so that adjacently arranged magnetic poles have different poles. A field magnet formed as a stator and a brush, and the first and second u-phase armature coils are arranged so as to be out of phase with each other by an electrical angle of 2π.
And the second v-phase armature coils are arranged so as to be out of phase with each other by an electrical angle of 2π, and the u-phase armature coil and the v-phase armature coil are mutually shifted by an electrical angle of π / 2. By arranging a total of four armature coil groups eccentrically by arranging the phases out of phase, a two-phase flat type coreless eccentric vibration armature is formed that rotates eccentrically while taking an eccentric center of gravity. Is a rotor facing the field magnet with an air gap in the axial direction, and a commutator electrically connected to the armature coil is provided on the rotor, and the brush is slidably contacted with the commutator. This can be achieved by providing a two-phase coreless flat type vibration motor.

As an armature coil disposing method suitable for generating longitudinal vibration in such a two-phase coreless flat type vibration motor, the two-phase flat type coreless eccentric vibration armature is used as a first u-phase. Of the second v-phase armature coil and the second v-phase armature coil and the first v-phase armature coil and the second v-phase armature coil Optimum position by using a two-phase coreless flat type vibration motor formed by stacking two armature coils with their electrical angles shifted by 5π / 2 in phase from each other in the axial direction. Therefore, a member capable of generating a large-shaped vertical vibration can be provided.

That is, in the two-phase coreless flat type vibration motor, the space between the first u-phase armature coil and the second v-phase armature coil is connected to the field magnet. This is possible by providing an eccentric weight that generates an eddy current by relative rotation.

[0024]

[Function] The brush 13 electrically connected to the positive and negative power supply sides
Armature coils 3u-1 and 3v so that torque in a predetermined direction is generated through the commutator 28 that slides against -1, 13-2.
Since the -1, 3u-2 and 3v-2 groups are energized, the two-phase flat type coreless eccentric vibration armature 6-1 rotates eccentrically while moving partially in a predetermined direction. This eccentric vibration armature 6-
Since the centrifugal force due to the radial and circumferential eccentricity due to the eccentric rotation of 1 propagates to the coreless flat type vibration motor main body 11 as vibration, a device equipped with the two-phase coreless flat type vibration motor 1-1 , For example, the vibration is transmitted to the pager housing,
The pager carrier can be informed that there is a vibration call.

Here, the flat coreless eccentric vibration armature 6 is used.
-1 indicates an open angle width of the effective conductor portions 3a and 3a 'that contributes to the generated torque extending in the radial direction and is substantially equal to the width of one magnetic pole of the field magnet 15 in an electrical angle of 180 degrees (mechanical angle of approximately 6
Coreless armature coil 3-1 formed to 0 degree)
..., 3-4 is used. Therefore, as is clear from "Fleming's left-hand rule", the armature coils 3-1, ..., 3-4 are two-phase that can generate anti-torque and undesirably large torque and large vibration. The coreless vibration generating motor 1-1 can be obtained.

The two-phase flat coreless eccentric vibration armature 6-1 includes a first and a second u-phase armature coil 3u-.
1 and 3u-2 are arranged out of phase with each other by an electrical angle of 2π, and the first and second v-phase armature coils 3v-1 and 3v-2 are arranged with an electrical angle of 2π. The phases are shifted. Further, the u-phase armature coils 3u-1 and 3u-2 and the v-phase armature coils 3 are provided.
The v-1 and 3v-2 are formed by arranging them in phase with each other by an angle of π / 2 in electrical angle. For this reason, a two-phase flat coreless eccentric vibration armature in which the u-phase armature coils 3u-1 and 3u-2 and the v-phase armature coils 3v-1 and 3v-2 are vertically stacked in two layers. 6-1 can be formed, and the air gap length facing the field magnet 15 is upper armature coils 3v-1, 3u-2 and lower armature coils 3u-1, 3u.
It differs from v-2. Therefore, the upper and lower armature coil groups differ greatly in the torque ripple generated when they are energized, and the magnitude of the generated torque can be changed, and the flat coreless eccentric vibration armature 6-1 can be used. Large torque fluctuations can occur.

Moreover, the flat coreless eccentric vibration armature 6
Since the armature coil groups in the upper and lower stages of -1 are not in the same phase position and are displaced in the circumferential direction, the rotational balance is disrupted also in the circumferential direction. As a result, as the flat coreless eccentric vibration armature 6-1 rotates, vertical vibration (vertical vibration) is also obtained.

That is, the flat coreless eccentric vibration armature 6
Since -1 can generate not only centrifugal force but also axial vibration, it is possible to obtain longitudinal vibration that is sensationally preferable.

Furthermore, since the flat coreless eccentric vibration armature 6-1 is provided in which the number of armature coils is larger than that of the conventional one, the eccentric weight itself can be formed without the eccentric weight. The weight of the flat coreless eccentric vibration armature 6-1 can be increased, and a large vibration can be obtained by rotating the flat coreless eccentric vibration armature 6-1 at high speed.

Moreover, the flat coreless eccentric vibration armature 6
-1 is the first and second u-phase armature coils 3u-1 and 3u-2, and the first and second v-phase armature coils 3v-1.
And 3v-2 are arranged so as not to overlap each other by an electrical angle of 2π, and the armature coil 3
v-1 and 3u-2 are arranged in the upper stage, and the armature coil 3u-
When 1 and 3v-2 are arranged in the lower stage, the armature coil 3u-
Since a large empty space is formed between 1 and 3v-2, an eccentric weight (eccentric metal weight) 5 for obtaining a larger vibration can be arranged in this empty space. Therefore, when the flat coreless eccentric vibration armature 6-2 in which the eccentric weight 5 is arranged is used, a larger vibration can be generated.

In this case, if the eccentric weight 5 is a metal material capable of generating longitudinal vibration, for example, a metal that generates eddy current, and if the fan plate-shaped eccentric weight 5 formed of a lead plate having a large specific gravity is embedded, By rotating the eccentric weight 5 relative to the N pole and the S pole of the field magnet 15, an eddy current is generated, and the eccentric weight 5 has the same function as the magnetic poles of the N pole and the S pole. N of magnetic magnet 15
The flat-type coreless eccentric vibration armature 6-2 is attracted or repelled by the field magnet 15 side and attracts or repels the magnetic poles of the poles and the S poles to rotate while longitudinally vibrating. Therefore, the coreless vibration generating motor 1-2 is
If it is installed on the inner surface of the casing of the jar, the casing of the jar can be vibrated by centrifugal force accompanied by a desired longitudinal vibration.

Moreover, the flat coreless eccentric vibration armature 6
-2, since the eccentric weight 5 is located at the center of gravity of the flat coreless eccentric vibration armature 6-2, larger vibration can be generated. Moreover, in addition to the conventional four armature coils 3u-I, 3u-2, 3v
As a result, the coreless vibration generating motor 1-2 is significantly larger than the conventional three-phase coreless vibration generating motor, and the vibrating force (preferably haptic) ( It is possible to generate horizontal and vertical vibrations due to centrifugal force.

[0033]

Examples of the invention

FIG. 1 is an exploded perspective view of a two-phase coreless flat type vibration motor 1-1 according to a first embodiment of the present invention.
FIG. 2 is a vertical cross-sectional view of the coreless flat type vibration motor 1-1,
FIG. 3 shows the vertical relationship between the armature coils 3u-2 and 3v-2 in the case of FIG. 1 in the two-phase flat coreless eccentric vibration armature 6-1 of the coreless flat vibration motor 1-1. A plan view of the flat type coreless eccentric vibration armature 6-1 'when reversed, FIG. 4 is a bottom view of the same two-phase flat type coreless eccentric vibration armature 6-1', and FIG. FIG. 7 is a development view of a flat coreless eccentric vibration armature 6-1 and a 6-pole field magnet 15. 1 to 5, a two-phase coreless flat type vibration motor 1 as a first embodiment of the present invention will be described below.
A first embodiment will be described.

In FIG. 1, a field magnet 15 having 6 poles is used, and two u-phase and v-phase airless coreless armature coils 3u-1, 3v-1, 3u-2,
3v-2 is arranged in two layers in two layers, and a two-phase flat coreless eccentric vibration armature 6-1 formed in an eccentric shape of a substantially semicircular plate when viewed from the axial direction is provided with an axial gap therebetween. An exploded perspective view of an axial void type two-phase coreless flat type vibration motor 1-1 that is face-to-face with the field magnet 15 is shown. The flat type vibration motor 1-1 is shown in FIG. , Configure as follows.

Axial thickness is 3 mm, diameter is 18 mm
The lower open end of the flat cup-shaped case 9 made of the magnetic material is closed by the disk-shaped bracket 10 made of the magnetic material to form the coreless flat type vibration motor main body 11. The case 9 and the bracket 10 also serve as a stator yoke. The bracket 10 is formed using an iron substrate.

On the upper surface of the bracket 10, two power supply conductive patterns 12-1 for electrically connecting to the positive power supply terminal 14-1 side and the negative power supply terminal 14-2 side, respectively.
12-2 is formed in a substantially annular shape by means of etching or the like. Comb-shaped brushes 13-1 and 13-2 are provided at the ends of the conductive patterns 12-1 and 12-2 for electrical connection. The arrangement open angle width of the brushes 13-1 and 13-2 is larger than the angular width of one commutator piece of the commutator 28 (mechanical angle of 60 degrees) described later in order to eliminate the energization dead point. Set a slightly wider opening angle.

A through hole 16 formed by notching the side surface of the case 9
The outer peripheral portion of the bracket 10 opposed to the above is extended outward in the radial direction to form a lead wire attachment piece 17 for power supply, and the conductive pattern 12-extended on the attachment piece 17 is formed.
A lead wire 18-1 for connecting to the positive power source terminal 14-1 side and a lead wire 18-2 for connecting to the negative power source terminal 14-2 side are soldered to the terminals 1 and 12-2. To make an electrical connection (see FIG. 1).

A through hole 21 for press-fitting and fixing the lower end portion of the fixed shaft 20 with a collar is formed in the center of the bracket 10, and the fixed shaft is fixed until the flange 22 abuts the bracket 10 in the through hole 21. 20 is press-fitted and fixed in the through hole 21, and the fixed shaft 2
The upper end of 0 is slid on the center of the inner surface of the case 9 through the slider 23.

A flat coreless eccentric vibration armature 6-1 (or a flat coreless eccentric vibration armature 6-1 'shown in FIGS. 3 and 4) is rotatable on the fixed shaft 20, as will be described later. Supported by.

A cylindrical bearing 24 such as an oilless metal is rotatably mounted on the outer periphery of the fixed shaft 20. A cylindrical resin 26 is molded on the outer periphery of the bearing 24 via a cylindrical spacer 25 made of a non-magnetic metal, and a flat plate commutation is formed on the lower surface of the central portion of a flat coreless eccentric vibration armature 6-1 described later. While fixing the child board 27, four planar fan-frame-shaped air-core type two-phase coreless armature coils 3u-1, 3v-1, 3
u-1 and 3v-2 are adhesively fixed to the upper surface of the substrate 27 to rotatably support the flat coreless eccentric vibration armature 6-1.

The flat type coreless eccentric vibration armature 6-1.
And a magnetic field magnet 15 of a flat-plate annular shape having N poles and S poles alternately magnetized along the circumferential direction so that adjacent magnetic poles have different polarities through an air gap in the axial direction. It is fixed to the inner upper surface of the bracket 10 by an adhesive in a concentric arrangement with the shaft 20.

Flat coreless eccentric vibration armature 6-1
When the armature 6-1 rotates (while partially eccentric to the circle), four air-core type armature coils 3u-1, 3v-1, 3u-1, 3v-
The two are arranged as follows to form an armature structure of a two-phase energization structure having an eccentric shape of a semi-disk when viewed from the axial direction where two layers are stacked.

The two-phase flat type coreless eccentric vibration armature 6-1 includes the first and second u-phase armature coils 3u-.
1 and 3u-2 are arranged on the commutator substrate 27 with a phase difference of 2π in electrical angle from each other, and the first and second v-phase armature coils 3v-1 and 3v-2 are also electrically connected to each other. The commutator substrate 2 with the phase shifted by an angle of 2π
Place at 7. In addition, the u-phase armature coil 3u-
1, 3u-2 and v-phase armature coils 3v-1, 3v-2
Are shifted in phase from each other by an angle of π / 2 in electrical angle.

That is, with respect to the first u-phase armature coil 3u-1, the first v-phase armature is sequentially shifted from the armature coil 3u-1 by an electrical angle of π / 2. The coil 3v-1 is provided, and the second u-phase armature coil 3u-2 is provided by shifting the phase from the v-phase armature coil 3v-1 by an electrical angle of 3π / 2. Phase armature coil 3
The second v-phase armature coil 3v-2 is arranged with a phase shift of π / 2 in electrical angle from u-2, and a total of four air-core type armature coils 3u-1 are arranged. , 3v-1, 3u
A two-phase flat coreless eccentric vibration armature 6-1 composed of -1,3v-2 is configured.

Moreover, the armature coils 3v-1 and 3u-2 are arranged in the upper stage, and the armature coils 3u-1 and 3v-2 are arranged in the lower stage. In this way, the first u-phase armature coil 3u-1 and the second v-phase armature coil 3v-2 are
Since they are arranged with their phases shifted by an electrical angle of 5π / 2 from each other, the armature coils 3u-1 and 3v-2 are arranged.
There is a big space between and. Therefore, an appropriate eccentric weight for obtaining a larger vibration can be arranged in this large empty space. Therefore, when a larger vibration force is desired, an appropriate eccentric weight is arranged in the empty space. With the flat coreless eccentric vibration armature 6-1, the larger vibration can be generated. still,
As shown in FIGS. 3 and 4, armature coils 3u-1 and 3u
-2 is arranged in the upper stage, and armature coils 3v-1 and 3v-2
Flat coreless eccentric vibration armature 6-
1 ', between the first u-phase armature coil 3u-1 and the second u-phase armature coil 3u-2, and the first v
Since the phase armature coil 3v-1 and the second v-phase armature coil 3v-2 are arranged so as to be out of phase with each other by an electrical angle of π, the armature coil 3u-
There is a large empty space between 1 and 3u-2 and between 3v-1 and 3v-2. Therefore, since an appropriate eccentric weight for obtaining a larger vibration may be arranged in this large empty space to obtain a larger vibration force, the flat coreless eccentric vibration armature 6-1 is provided. 'May be used. However, in order to secure a large space and use one larger eccentric weight, the flat coreless eccentric vibration armature 6-1 is easier. Therefore, in the first embodiment, the flat type is used for the time being. The coreless eccentric vibration armature 6-1 is used.

Therefore, in order to obtain a two-phase flat coreless eccentric vibration armature 6-1 which is thin and has good vibration efficiency,
The armature coils 3u-1 and 3v-1 are overlaid on each other in two layers, and the armature coils 3u-2 and 3v-2 are overlaid on each other in two layers. An eccentric flat coreless eccentric vibration armature 6-1 is configured.
Even if the armature coils 3u-1 and 3v-1, and the armature coils 3u-2 and 3v-2 are configured to overlap each other in a double thickness as described above, the respective armature coils 3u-1 and 3v
By considering the wire diameter and the number of winding turns, the -1, 3u-1 and 3v-2 can be made thin like the conventional flat type coreless eccentric vibration armature, and a larger torque can be obtained. Can be generated.

Armature coils 3u-1, 3v-1, 3u-
1, 3v-2 are effective conductor portions 3a in the radial direction,
3a 'contributes to the generated torque, and the circumferential conductor portions 3b, 3
c does not contribute to the generated torque. Also, each armature coil 3u-1, 3v-1, 3u-1, 3v-2
In order to form an efficient coreless vibration generating motor 6-1 in which anti-torque does not enter, effective conductor portions 3a and 3a 'are formed.
The open angle between and is equal to the width of one magnetic pole of the field magnet 15, that is, a fan frame having an electrical angle of 180 degrees (mechanical angle of 60 degrees).

The above-mentioned commutator substrate 27 is fixed to the lower surface of the flat coreless eccentric vibration armature 6 concentrically with the fixed shaft 20. The commutator board 27 is an insulating board such as a printed board (it is convenient to use a through-hole board).
A commutator 28 made up of a group of commutator pieces 28-1, ..., 28-6 slidably contacting the brush portions 13-1 and 13-2 is formed on the lower surface of the device by etching means or the like.

Commutator pieces 28-1, 28-3 and 28-5
Are electrically connected by means such as soldering by means of a printed wiring pattern formed on the lower surface of the insulating substrate by etching means as shown in FIG. 5, and are also formed by etching means on the upper surface of the insulating substrate. As shown in FIG. 5, a commutator piece 28 is formed by a printed wiring pattern.
-2, 28-5 and 28-6 are electrically connected by means such as soldering.

The armature coils 3u-1 and 3v-2 are adhered to the commutator substrate 27 with an adhesive,
Similarly, v-1 and 3u-2 are adhered to the upper surfaces of the armature coils 3u-1 and 3v-2 by an adhesive agent, and the flat type coreless eccentric vibration armature 6-1 is provided with further strength. Therefore, although not shown in the figure, it is molded with a resin to form an anti-disc shape.

As described above, the armature coils 3v-1 and 3
u-2 is bonded to the armature coils 3u-1, 3v-
Since it is laminated and adhered on the upper surface of 2, the armature coil 3v
-1 and 3u-2 winding start terminal 4 to armature coil 3u
It can be easily soldered to the printed wiring pattern on the upper surface of the commutator substrate 27 along the upper surfaces of -1, 3v-2, and the winding start terminal 4 does not become an obstacle.

Therefore, according to the coreless vibration generating motor 11 of the present invention, the power source such as the battery of the pager having the coreless vibration generating motor 11 is connected to the power source terminals 14-1 and 14-2 and the power supply lead wire 18. -1, 18-2, conductive pattern for power supply 12-
1, 12-2, brush sections 13-1, 13-2, commutator 2
8 armature coils 3u-1, 3v-1,
If current is applied to 3u-1 and 3v-2 as shown in FIG. 5 so that a rotational torque in an appropriate direction can be obtained, a torque that rotates in a predetermined direction is generated according to Fleming's left-hand rule, so that the fixed shaft 20 is centered. As a result, the flat coreless eccentric vibration armature 6-1 rotates while being partially eccentric in a predetermined direction.

When the flat coreless eccentric vibrating armature 6-1 rotates with partial circle eccentricity in a predetermined direction, rotation torques in the predetermined direction are sequentially obtained so that the brush portions 13-1 and 1 can be obtained.
The sliding positions of 3-2 and the commutator pieces 28-1, ..., 28-6 are switched to generate continuous rotational torque in a predetermined direction. Here, the flat coreless eccentric vibration armature 6-1
Is formed eccentrically, so it rotates eccentrically while performing partial circular motion. Since the vibration due to the eccentric amount in the radial direction and the circumferential direction due to the eccentric rotation of the eccentric vibration armature 6-1 and the horizontal and vertical vibrations generated by the torque fluctuation are propagated to the coreless vibration generating motor main body, the coreless vibration is generated. The vibration is transmitted to the device to which the generation motor 1-1 is attached, for example, the pager housing, and the pager wearer can be informed that there is a call due to the vibration.

[0054]

[Second Embodiment] The coreless vibration generating mode of the second embodiment.
In the flat coreless eccentric vibration armature 6-1 of the coreless vibration generating motor 1-1, a flat coreless eccentric formed by embedding an eccentric weight 5 in order to obtain a larger longitudinal vibration. The vibration armature 6-2 is used.

The flat type coreless eccentric vibration armature 6-
As described in 1, the armature coils 3v-1 and 3u-2 are arranged in the upper stage, and the armature coils 3u-1 and 3v-2 are arranged in the lower stage. In this way, a large empty space can be formed between the armature coils 3u-1 and 3v-2, and the eccentric weight 5 for obtaining a larger longitudinal vibration is embedded in this empty space. . The embedding position of the eccentric weight 5 is exactly the flat coreless eccentric vibration armature 6
Since the center of gravity is −2, the vibration force due to the centrifugal force in the lateral direction is further increased. The eccentric weight 5 allows the field magnet 15 to rotate by rotating the flat coreless eccentric vibration armature 6-2 relative to the field magnet 15.
An eddy current having the same function as the N and S magnetic poles can be generated, and a lead plate made of a non-magnetic metal such as lead having a large specific gravity is selected.

By providing such an eccentric weight 5, an eddy current is generated by relative rotation with the N pole and the S pole of the field magnet 15. Due to the eddy current, the eccentric weight 5 has the same function as the magnetic poles of N pole and S pole, and attracts or repels the magnetic poles of N pole and S pole of the field magnet 15.
The flat coreless eccentric vibration armature 6-2 is attracted or repelled by the field magnet 15 side and rotates while vibrating vertically. That is, the eccentric weight 5 causes longitudinal vibration.

According to the experimental results, the eccentric weight 5 is provided at the above-mentioned position to generate a vibration which is desirable for total sensation due to the vibration due to the centrifugal force and the longitudinal vibration. This is because when the flat coreless eccentric vibration armature 6-2 rotates, the center of gravity comes to the eccentric weight 5.

Therefore, when the flat type coreless eccentric vibration armature 6-2 rotates by performing a partial circular motion in a predetermined direction, a rotating torque in the predetermined direction is sequentially obtained.
1 and 13-2 and commutator pieces 28-1, ..., 28-6
The sliding position of switches, and continuous rotation torque is generated in the specified direction. Here, since the flat coreless eccentric vibration armature 6-2 is eccentrically formed, it rotates eccentrically while performing partial circular movement. This eccentric vibration armature 6-
2 Vibration due to eccentric rotation due to eccentric rotation and vibration due to circumferential eccentricity, torque fluctuation, and eccentric weight 5 and field magnet 1
Since the vertical vibration due to the suction and repulsion with 5 propagates to the coreless vibration generating motor main body 11, the vibration is transmitted to the device, for example, the pager housing, to which the coreless vibration generating motor 1 is attached. JA It is possible to inform the carrier that there is a call due to vibration.

[0059]

[Effect] According to the two-phase coreless vibration generating motor of the present invention, a large number of highly efficient armature coils without anti-torque can be used, and the armature coils may overlap in two layers. Like the conventional flat type coreless eccentric vibration armature, it can be formed to have the following thin thickness, and by doing so, the fluctuation of the torque ripple can be increased and the shortage of longitudinal vibration that is sensationally pleasing can be compensated. In addition, since the structure can be designed freely, an eccentric weight that can generate an eddy current can be easily placed at the center of gravity that generates the largest centrifugal force. Therefore, the weight of this eccentric weight is also added, and vibration due to conventional centrifugal force is added. Not only can large vibrations be generated as described above, but also eccentric weights that can generate the above eddy currents can generate more longitudinal vibrations that are sensationally preferable. Therefore, an effect suitable for a card-type pager or the like is obtained. is there.

[Brief description of drawings]

FIG. 1 Coreless flat type vibration motor 1 according to the first embodiment of the present invention.
It is an exploded perspective view of -1. 2 is a vertical cross-sectional view of the coreless flat type vibration motor 1-1. Fig. 3 In the two-phase flat type coreless eccentric vibration armature 6-1 of the coreless flat type vibration motor 1-1, the vertical relationship between the armature coils 3u-2 and 3v-2 in the case of Fig. 1 is reversed. FIG. 6 is a plan view of a flat-type coreless eccentric vibration armature 6-1 ′ in the case of the above. Fig. 4 Flat coreless eccentric vibration armature 6 of Fig. 3
It is a bottom view of 1 '. 5 is a development view of the two-phase flat coreless eccentric vibration armature 6-1 and the six-pole field magnet 15. 6 is an exploded perspective view of the coreless flat type vibration motor 1-2 of the second embodiment of the present invention.

[Explanation of symbols]

1-1, 1-2 Two-phase coreless flat vibration motor 3u-1 First u-phase coreless armature coil 3u-2 Second u-phase coreless armature coil 3v-1 First v-phase Coreless armature coil 3v-2 Second v-phase coreless armature coil 3a, 3a 'Effective conductor portion 3b, 3c that contributes to generated torque Conductor portion that does not contribute to generated torque 4 Winding start terminal 5 Eccentric weight 6-1 , 6-1 ', 6-2 Flat coreless eccentric vibration armature 9 case 10 Bracket 11 Coreless flat vibration motor main body 12-1, 12-2 Power supply conductive pattern 13-1, 13-2 Brush 14-1 Positive power supply terminal 14-2 Negative power supply terminal 15 Field magnet 16 Through hole 17 Power supply lead wire attachment piece 18-1, 18-2 Lead wire 19 Solder 20 Tsuba Attached fixed shaft 21 Through hole 22 23 Slider - 24 bearing 25 cylindrical space - Sa 26 cylindrical resin 27 flat commutator substrate 28 commutator 28-1, ..., 28-6 commutator segment

Claims (3)

[Claims] 1. N is so arranged that adjacent magnetic poles have different polarities.
It is equipped with a field magnet formed of P (P is an integer of 2 or more) pairs of poles of S and S poles as a stator, a brush, and a first and a second u-phase armature coils. The first and second v-phase armature coils are arranged so as to be out of phase with each other by an electrical angle of 2π, and are arranged so as to be out of phase with each other by an electrical angle of 2π with respect to the u-phase armature coil. The v-phase armature coils have an electrical angle of π /
By arranging the phases by shifting the angle of 2 to form a two-phase flat coreless eccentric vibration armature that eccentrically arranges a total of four armature coil groups and eccentrically rotates while taking an eccentric center, An oscillating armature is a rotor that is face-to-face with the field magnet via a gap in the axial direction, and a commutator electrically connected to the armature coil is provided on the rotor, and the brush has the brush. A two-phase coreless flat type vibration motor characterized by being in sliding contact with each other. 2. The two-phase flat type coreless eccentric vibration armature is characterized in that the first u-phase armature coil and the second v-phase armature coil are phased with each other by an electrical angle of 5π / 2. And the second u-phase armature coil and the first v-phase armature coil are axially displaced from each other by an electrical angle of 5π / 2 in the axial direction. The two-phase coreless flat type vibration motor according to claim 1, wherein the two-phase coreless flat type vibration motor is formed by stacking two layers. 3. An eccentric weight for generating an eddy current by relative rotation of the field magnet is provided between the first u-phase armature coil and the second v-phase armature coil. The two-phase coreless flat type vibration motor according to claim 2.