JP3383835B2 - Flat type vibration generator - Google Patents

Description

Detailed Description of the Invention

[0001]

[Industrial applications]

The present invention provides a human body or the like with a calling device such as a pager for transmitting a call by vibration in a small radio, a signal receiver for the blind, a device for transmitting a predetermined signal, and a light vibrator. This is a flat type vibration generator of button battery type suitable for a massaging device requiring a massaging effect or light vibration.

[0003]

2. Description of the Related Art A card type pager, a wristwatch type pager, etc., have a built-in vibration generator having an eccentric metal weight attached to the rotary shaft of a conventional cylindrical coreless motor because the thickness thereof is very thin. Since there is no space for this, it is necessary to use a flat vibration generator that can be formed flat.

Therefore, the inventors of the present application previously provided a flat vibration generator 1'-1 as shown in FIG. The flat-type vibration generator 1'-1 will be described below with reference to FIG. Incidentally, the explanation of the points common to the present invention is as follows.
As the description of the embodiments of the present invention, the same components are designated by the same reference numerals, and corresponding components are designated by a dash. In FIG. 7, 7 is a rotary shaft, 9'is a case, 10 'is a bracket,
13'-1, 13'-2 are brushes, 18'-1, 18 '
-2 is a lead wire, 11 'is a flat type vibration generator main body,
Reference numerals 2 and 8 indicate bearings.

This flat type vibration generator 1'-1 is used in an axial air gap type electric motor in which three well-arranged three-phase three coils are opposed to a well-known four-pole flat field pole 15 through an air gap in the axial direction. The field pole 1 of the three-phase flat coreless armature 5
A fan plate-shaped eccentric metal weight 26'-1 made of high specific-polymer heavy metal such as lead or tungsten is adhered to the axial surface opposite to the surface facing No. 5 for the purpose of increasing the amount of eccentric vibration. Fixed using a flat coreless eccentric vibration armature 6'-
1 is formed.

The eccentric metal weights 26'-1 have respective armature coils 3-1, ..., 3- for the purpose of increasing the amount of eccentric vibration.
The thing larger than the shape of 3 is used.

[0007]

[Problems of the Prior Art] The flat vibration generator 1'-
According to 1, the vibration larger than that of the flat vibration generator using the flat coreless eccentric vibration armature 6'-2 shown in FIG. 8 was obtained. In this flat coreless eccentric vibration armature 6'-2, an eccentric metal weight 26'-2 is placed in the frame cavity of one armature coil 3-1.

Flat coreless eccentric vibration armature 6'-2
One of the characteristics of the flat type vibration generator using
When the armature coils 3-1, ..., 3-3 formed with a thickness of 0.6 mm are wound with a conductor having the wire diameter of 70 mm and the current value is as low as 70 mA, vibration Is 0.06 G. However, the eccentric metal weight 26 '
For -2, one formed of lead was used.

Since the eccentric metal weight 26'-2 is placed in the small frame cavity of the armature coil 3-1, it is possible to obtain a larger vibration in consideration that only the small eccentric metal weight 26'-2 can be used. The flat type vibration generator 1'-1 of FIG. 7 was devised for this purpose. In the case of this flat type vibration generator 1'-1, since a large eccentric metal weight 26'-1 can be used, a large vibration is generated as compared with the case of using the flat type coreless eccentric vibration armature 6'-2. was gotten.

Even so, the vibration was around 0.08 G, which was not sufficient yet. Therefore, an eccentric oscillating weight formed in a semicircle shape was bonded to the surface of the three-phase flat coreless armature 5 for the purpose of obtaining a larger vibration. However, since the flat vibration generator is a very small object having a diameter of 20 mm and a thickness of 3 mm, the eccentric vibration weight becomes large and the load becomes too large, so that a large vibration cannot be obtained. Also, it is not a good idea in terms of current value.

Therefore, the inventor of the present invention uses the flat type coreless eccentric vibration armature 6'-3 shown in FIG. 9 in order to eliminate the drawbacks of the conventional flat type vibration generator 1'-1. The generator 1'-2 was invented.

In this flat type vibration generator 1'-2, a large vibration is generated as compared with the conventional one by devising the shape and the arrangement position of the flat metal weight so as not to make the eccentric metal weight too large. Obtained, card type or wristwatch type
The problem was to obtain a flat vibration generator suitable for a jar or the like, and a large vibration could be obtained as compared with the conventional flat vibration generator 1'-1.

This flat-type vibration generator 1'-2 has a flat-shaped coreless armature 5 which is located outside one-half of the radius of the flat-shaped coreless armature 5 on a part of an axial surface thereof. The flat coreless eccentric vibration armature 6'-3 is formed by fixing the eccentric metal weight 26'-3 for eccentricity of the shape coreless armature 5 to generate vibration. When the vibration amount is expressed as acceleration at 100 mA, it is about 0.1.
G type is obtained, and the conventional flat type vibration generator 1'-1
It is a useful thing that a large vibration was obtained compared with. Since the detailed description of the flat vibration generator 1'-2 is almost the same as the structure of the flat vibration generator of the present invention, the common parts are described in the flat vibration generator of the present invention. As a reference, the detailed description is omitted here.

[0014]

SUMMARY OF THE INVENTION The present invention is directed to the flat type vibration generator 1 '.
-2 problem, that is, by devising the shape and placement position of the flat metal weight so as not to make the eccentric metal weight too large, large vibration can be obtained compared to the conventional one, and it is a card type. The problem was to obtain a flat type vibration generator suitable for a wristwatch type pager, etc., but a flat type which can obtain a larger vibration than the flat type vibration generator 1'-2 described above. The problem was to obtain a vibration-generating device.

[0015]

The object of the present invention is to provide 2P (P is an integer of 1 or more) magnetic poles of N pole and S pole so that adjacent magnetic poles have different poles. An air-core type that is provided with a field pole as a stator and a brush, and is configured to face the field pole through an axial gap and rotate to generate vibration due to centrifugal force. A flat type coreless armature comprising a group of armature coils and an axial gap type flat vibration generator which is a rotor provided with a commutator electrically connected to the armature. An eccentric metal weight is formed on the surface of the axially eccentric position so as to have a large area facing the field poles in the forward or reverse rotation direction of the flat coreless armature. Attach the flat type coreless eccentric vibration armature. It can be achieved by forming.

Another object is to provide an eccentric metal weight having a large area facing the field poles in the opposite rotation direction of the flat coreless armature. This can be achieved by fixing to the child to form a flat coreless eccentric vibration armature.

Another problem is that, in the eccentric metal weight, one of the starting end portion which is the end portion on the rotation direction side extending in the circumferential direction or the end portion which is the end portion on the counter rotation direction side is the armature coil. This can be achieved by disposing the flat coreless armature so as to face the position of the conductor portion that contributes to the generated torque.

Another problem is that the eccentric metal weight is compared with the above-mentioned field pole in comparison with the portion where the portion facing the position of the conductor portion contributing to the generated torque of the armature coil does not contribute to the generated torque of the armature coil or the like. This can be achieved by forming so that the area opposed to

Another problem is that in the eccentric metal weight, either the starting end portion or the terminating end portion extending in the circumferential direction faces the conductor portion position contributing to the torque generated by the armature coil, and the terminating portion or the starting end portion. This can be achieved by disposing one of the two in the flat coreless armature so as to face a partial position of the armature coil or the like that does not contribute to the generated torque.

Another problem is that in the eccentric metal weight, the end portion extending in the circumferential direction faces the conductor portion position contributing to the torque generated by the armature coil, and the start end portion does not contribute to the torque generated by the armature coil. This can be achieved by disposing the flat coreless armature so as to face the partial position.

Another object can be achieved by forming the eccentric metal weight so that the width from the start end to the end extending in the circumferential direction is a little wider than the width in the circumferential direction of one armature coil.

Another problem is that the flat vibration generator uses four poles as field poles, and three air-core armature coils are arranged in three phases at equal pitches so as not to overlap each other. The flat coreless eccentric vibration armature formed by facing the field poles through an air gap in the axial direction. The commutator is composed of six commutator pieces, and the commutator pieces are electrically connected to each other. The brush to be slid on is formed by arranging a pair of brushes electrically connected to the positive power supply terminal side and the negative power supply terminal side at an opening angle of the width of one magnetic pole of the field pole. Can be achieved.

[0023]

When the armature coil group is energized so that a torque in a predetermined direction is generated through the commutator that slides with the brush electrically connected to the positive and negative power supply sides, the flat coreless eccentric vibration armature is generated. Rotate in a predetermined direction. Here, the surface area of the three-phase flat coreless armature in the eccentric position of the axial surface has a larger area facing the field poles in the positive or reverse rotation direction of the flat coreless armature. Since the flat coreless eccentric vibration armature is formed by fixing the eccentric metal weight formed so as to have a portion, the centrifugal force is increased, and the flat coreless eccentric vibration armature moves partially circularly. While rotating eccentrically. Since the centrifugal force due to the radial and circumferential eccentricity due to the eccentric rotation of this flat coreless eccentric vibration armature becomes vibration and propagates to the flat vibration generator main body, a device to which the flat vibration generator is attached, For example, vibration can be transmitted to the pager body, and the pager wearer can be informed that there is a call due to vibration.

[0024]

Examples of the invention

First Embodiment FIG. 1 shows a field pole 15 having four poles, three air-core armature coils 3-1, ...
On the axial surface of the three-phase flat coreless armature 5 molded in a disk shape with resin 4 so that 3-3 are arranged in three phases at equal pitches of 120 degrees so as not to overlap each other. An axially flat axial direction in which a flat coreless eccentric vibration armature 6-1 formed by fixing an eccentric metal weight 26 with an adhesive is made to face the field pole 15 through a gap in the axial direction. 2 is an exploded perspective view of the air gap type flat vibration generator 1.
Is a vertical sectional view of the flat type vibration generator 1, FIGS. 3 and 4 are explanatory views of an eccentric metal weight, and FIG. 5 is a development view of a field pole, a flat type coreless armature, a commutator and a brush. Is. The flat-type vibration generator 1 is of a shaft protrusion-less type in which shafts such as a rotary shaft and a fixed shaft do not protrude from the end face in the axial direction. Hereinafter, the flat vibration generator 1 of this embodiment will be described mainly with reference to FIGS. 1 to 5.

Axial thickness is 3 mm, diameter is 20 mm
The flat type vibration generator main body is formed by closing the open end (the lower open end in the drawing) of the flat cup-shaped case 9 made of the magnetic material with the disk-shaped bracket 10 made of the magnetic material. 11 is formed. The case 9 and the bracket 10 also serve as a stator yoke. The bracket 10 is formed by 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 semi-circular shape integrally with the brushes 13-1 and 13-2 by means such as etching.
The brushes 13-1 and 13-2 electrically slid with 8-1, ..., 28-6 are electrically connected to the positive power supply terminal side 14-1 and the negative power supply terminal 14-2 side. Connected to.

The two brushes 13-1 and 13-2 are arranged at an open angle of approximately 2P / k (where k is the number of magnetic poles of the field pole 15). In this embodiment, two brushes 13-
1 and 13-2 are arranged and formed with an open angle width of approximately one magnetic pole width (mechanical angle of 90 degrees, electrical angle of 180 degrees) of the field pole 15 described later, and its surface appropriate portion is treated with an insulating thin film. is doing.

The side surface of the case 9 is cut out to form a through hole 16.
And the outer circumference of the bracket 10 facing the through hole 16 is extended outward in the radial direction to form a lead wire mounting piece 17 for power supply. The positive side power supply terminal 14 is connected to the conductive patterns 12-1 and 12-2 extended from the mounting piece 17.
The lead wire 18-1 for connecting to the -1 side and the lead wire 18-2 for connecting to the negative power supply terminal 14-2 side are electrically connected by the solder 19.

A through hole 21 for press-fitting and fixing the lower end 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 9 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 brought into sliding contact with the center of the inner surface of the case 9 via a slider 23.

A flat coreless eccentric vibration armature 6-1 is rotatably supported on the fixed shaft 20 as described later.

A cylindrical bearing 24 made of oilless metal or the like is rotatably mounted on the outer periphery of the fixed shaft 20, and a non-magnetic metal cylindrical spacer 25 is provided on the outer periphery of the bearing 24. The flat commutator substrate 27 is fixed with a resin 4 mold and three planar fan-frame-shaped coreless armature coils 3 are provided.
A flat coreless eccentric vibration armature 6-1 in which a three-phase flat coreless armature 5 having -1, ..., 3-3 and a substrate 27 are integrated is rotatably supported.

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

As shown in FIGS. 1 and 3, the three-phase flat coreless armature 5 includes three air-core armature coils 3-1.
····················································· s three-phase arranging arranged at equal pitches of 120 degrees so as not to overlap each other, and formed in a disk shape with a resin 4 having a through hole through which the fixed shaft 20 passes at the center To be done. A bearing 24 and a spacer 25 are attached to and integrated with the inner peripheral portion of the through hole in the central portion.

The armature coils 3-1, ..., 3-3 are
The effective conductor portions 3a and 3a 'in the radial direction contribute to the generated torque, and the conductor portions 3b and 3c in the circumferential direction do not contribute to the generated torque. Also, each armature coil 3-1, ...
, 3-3 form the open angle between the effective conductor portions 3a and 3a 'in order to form an efficient flat vibration generator 6-1.
The field pole 15 (having four poles) is formed in a fan frame shape having a width equal to that of one magnetic pole, that is, a mechanical angle of 90 degrees.

An eccentric metal weight 26, which will be described in detail later, is fixed to the surface of the three-phase flat coreless armature 5 opposite to the surface facing the field poles 15 by means of an adhesive or the like. Thus, the flat coreless eccentric vibration armature 6-1 is formed.

A commutator board 27 is fixed to the lower surface of the flat coreless eccentric vibration armature 6-1 concentrically with the fixed shaft 20. The commutator board 27 includes a commutator piece 28-1, ..., 28-6 group that comes into sliding contact with the brushes 13-1, 13-2 on the lower surface of an insulating board such as a printed board. It is formed in.

As shown in FIG. 5, commutator pieces 28-1 and 28
-4, commutator piece 28-2 and 28-5, commutator piece 28-3
And 28-6 are electrically connected to each other, and armature coils 3-1 ,.
.., electrically connecting the other terminals of 3-3 electrically in common,
Connect one terminal of the armature coil 3-1 to the commutator piece 28-1.
Then, connect one terminal of the armature coil 3-2 to the commutator piece 28-
3, one terminal of the armature coil 3-3 is connected to the commutator piece 28.
-2 is electrically connected by means such as soldering.

In order to form the flat vibration generator 1 capable of obtaining a large vibration, an adhesive or the like is simply used on the surface of the flat coreless armature 5 opposite to the surface facing the field poles 15. It is not possible to form a flat coreless eccentric vibration armature to which an eccentric metal weight is fixed. The shape and location of the eccentric metal weight are important points.

In order to obtain a large vibration in the flat type vibration generator 1 of the present invention, referring to FIGS. 2 and 4, when the flat coreless armature 5 has a radius of l, the flat type Half the radius of the coreless armature 5, ie, 1/2
The flat coreless armature 5 is eccentrically located on an eccentric part of the axial surface (the surface opposite to the surface facing the field pole 15) of the flat coreless armature 5 located on the outer side to cause vibration. An eccentric metal weight 26 for generating is fixedly provided to form a flat coreless eccentric vibration armature 6-1.

Desirably, the armature coils 3-1, ...
.., 3-3, where the radial length is l ', the armature coils 3-1, ..., 3-3 are half the radius l' / 2 or more outward. Flat type coreless armature 5 located
An eccentric metal weight 26 for causing the flat coreless armature 5 to eccentrically generate vibration at a part of the eccentric position of the surface in the axial direction (the surface opposite to the surface facing the field pole 15). Since it is desirable that the flat coreless eccentric vibration armature 6-1 is fixed, such a position is selected to form the flat coreless eccentric vibration armature 6-1.

The large vibration can be obtained by disposing at such a position because the centrifugal force contributes to the outer peripheral portion of the flat coreless eccentric vibration armature 6-1. In this case, it is conceivable to provide an eccentric metal weight on the outer peripheral portion of the flat coreless armature 5, but the flat coreless armature 5 has a very large axial thickness and the amount of the eccentric metal weight is small, resulting in a large vibration. Therefore, it is desirable to dispose the eccentric metal weight 26 at the above-mentioned position. Further, when the eccentric metal weight 26 is arranged at the above-mentioned position, the amount of the eccentric metal weight is smaller than that of the conventional flat type coreless eccentric vibration armature 6'-1. The load of 6 is small and the current characteristics are improved. Eccentric metal weight 2 of flat-type coreless eccentric vibration armature 6'-1
In the case of 6'-1, the flat coreless armature 5 has an eccentric metal weight 26'-1 extending to the entire inner peripheral portion,
There are many parts that do not contribute to the centrifugal force, and conversely the shape is such that the centrifugal force is canceled out, so that not only large vibration cannot be obtained, but also the load is large and the current characteristics are not good.

The arrangement conditions of the eccentric metal weight 26 as described above are the same as the conditions and the shape of the eccentric metal weight 26'-3 of another invention, and it is impossible to obtain a larger vibration as it is. In order to obtain a larger vibration, the eccentric metal weight 26 portion located outside by a length of 1/2 or more of the radius of the flat coreless armature 5 is, for example, an armature coil 3-
Taking 1 and 3-2 as an example, the dotted line enclosing portion 28 that does not face the conductor portion 3'a that contributes to the torque generated by the armature coil 3-1.
(See FIG. 3) Only the eccentric metal weight 26 portion is provided, and the portion facing the conductor portion 3a that contributes to the torque generated by the armature coil 3-2, which is indicated by the dotted line enclosing portion 29, is adjacent to the conductor portion 3'a. The eccentric metal weight 26 portion on the rotation direction (arrow A direction) side further has a radius l / 2 of the flat coreless armature 5.
It is formed so as to extend toward the inner diameter side.

By carrying out the above-mentioned operation, the flat coreless armature 5 is provided with an eccentric position on the axial surface of the flat coreless armature 5 in the opposite rotation direction (counter arrow A).
Direction), the flat coreless eccentric vibration armature 6-1 is formed by fixedly mounting the eccentric metal weight 26 formed so as to have a large area facing the field pole 15. .

As described above, in the case of the present invention, in order to obtain a large vibration, the eccentric metal weight 26 has a starting end extending in the circumferential direction (end portion in the direction of arrow A shown in FIGS. 1, 3 and 4). )
26A and the end (the end in the direction opposite to the arrow A shown in FIG. 3) 26B
By changing the size of the area, when the flat coreless eccentric vibration armature 6-1 is rotated in the direction of arrow A by providing a difference in weight, larger eccentricity and larger vibration can be obtained. I have to.

In the above-mentioned case, the field magnet is moved toward the positive rotation direction (direction of arrow A) of the flat coreless armature 5 on the surface portion of the flat coreless armature 5 at the eccentric position. The flat coreless eccentric vibration armature 6-1 may be formed by fixing the eccentric metal weight 26 formed so as to have a large area facing the poles 15. The eccentric metal weight 26 formed so as to have a large area facing the field pole 15 in the opposite rotation direction (counter arrow A direction) of the coreless armature 5 is caused by centrifugal force. Since the recoil is large, a large vibration can be obtained. Therefore, it is desirable to adopt this embodiment.

In addition to the contrivance of the shape of the eccentric metal weight 26, in the present invention, in order to obtain a larger vibration, the eccentric metal weight 26 has either a starting end 26A portion or a terminal end 26B extending in the circumferential direction. One is armature coil 3-
Conductor part 3 that contributes to the generated torque of 1, 3-2 or 3-3
The flat coreless armature 5 is arranged at the above-mentioned position so as to face the a or 3a 'position.

In the embodiment, the eccentric metal weight 26 contributes to the torque generated at the end position in the circumferential direction of the conductor portion 3a which contributes to the torque generated at the armature coil 3-1 by the starting end 26A extending in the circumferential direction. The conductor portion 3a ′ that contributes to the torque generated by the armature coil 3-1 is formed by making the eccentric metal weight 26 portion shown by the above-mentioned dotted line enclosing portion 29 in which the area of the terminal end 26B portion of the eccentric metal weight 26 is made large so as to oppose to the non-exposed portion. And the conductor portion 3a that contributes to the torque generated by the armature coil 3-2.

The eccentric metal weight 26 has conductor portions 3a and 3a 'which contribute to the torque generated by the armature coil 3-1 at both the start end 26A and the end 26B extending in the circumferential direction.
(Or the conductor portion 3a that contributes to the torque generated by the armature coil 3-2) may be opposed, but this is not done in the present invention for the purpose of obtaining a large eccentric vibration as described below.

That is, in the present invention, the eccentric metal weight 2
6 is formed such that the width from the start end 26A extending in the circumferential direction to the end end 26B is slightly wider than the width in the outer circumferential direction of one armature coil, for example, 3-1 and the start end 26A is located at the position described above. Portion and the terminal end 26B portion are positioned so that the eccentric metal weight 26 is fixed to the surface of the flat coreless armature 5 to form the flat coreless eccentric vibration armature 6-1 to generate an eccentric vibration force due to a large centrifugal force. I am trying to get it.

The reason for doing so will be described below.

The conductor portions 3a and 3a 'of the armature coil 3-1.
Is the conductor that contributes to the generated torque. Therefore, the eccentric metal weight 2 is placed at a position facing the conductor portion 3a or 3a '.
If the starting end 26A portion or the terminating end 26B portion of 6 is arranged to face each other, the maximum starting torque is generated at this position, so that the heavy eccentric metal weight 26 that becomes a load is fixed to the flat coreless armature 5 surface. Also, since the flat coreless eccentric vibration armature 6-1 can be rotated without a heavy load, a large vibration due to the eccentric centrifugal force can be obtained.

Next, the starting end 26A of the eccentric metal weight 26 is directed in the direction of arrow A so as to oppose to a partial position in front of the conductor portion 3a which contributes to the torque generated by the armature coil 3-1 and which does not contribute to torque generated. Installed and terminated as described above 26
B is the above flattened portion so as to face the portion that contributes to the generated torque between the conductor portion 3a ′ that contributes to the generated torque of the armature coil 3-1 and the conductor portion 3a that contributes to the generated torque of the armature coil 3-2. The eccentric metal weight 26 is fixed to the surface of the coreless armature 5 because the eccentric metal weight 26 has a larger eccentricity due to a difference in size between the starting end 26A portion position and the ending end 26B portion position due to the generated centrifugal force. This is to obtain the vibration force.

Flat type vibration generator 1 according to one embodiment of the present invention
According to the above, a power source such as a battery of a pager incorporating the power source terminal 14-1, 14-2, brushes 13-1, 13-
2, three armature coils 3-1 through the commutator 28, etc.
..., 3-3 are energized as shown in FIG. 5 so that a rotational torque in an appropriate direction can be obtained, and the armature coils 3-1, ..., 3-3 indicate arrows according to Fleming's left-hand rule. Since the generated torque f in the A direction is obtained, the rotational torque F in the arrow A direction is obtained as a whole, so that torque rotating in the arrow A direction is generated, and the flat coreless eccentric vibration armature about the fixed shaft 20 is generated. 6-1 rotates in the direction of arrow A.

When the flat type coreless eccentric vibration armature 6-1 rotates in the direction of arrow A, the brushes 13-1 and 13-2 and the commutator piece 28-1 are provided so that the rotating torque in the direction of arrow A is obtained in sequence. The sliding position of 28-6 changes, and continuous rotation torque in the direction of arrow A is generated. Since the flat coreless eccentric vibration armature 6-1 is formed such that the center of gravity is eccentric, the flat coreless eccentric vibration armature 6-1 rotates eccentrically while performing partial circular movement. Since the radial and circumferential eccentric amounts due to the eccentric rotation of the flat coreless eccentric vibration armature 6-1 are transmitted as vibrations to the flat vibration generator main body 11, the flat vibration generator 1 is attached. The vibration is transmitted to the device, for example, the body of the pager, and the person carrying the pager can be informed that there is a call due to the vibration.

According to the flat type vibration generator 1, an electric machine having a very thin and small size as described above, which has a wire diameter of Φ0.1 and is wound 39 turns, has a thickness of 0.4 mm. When the child coils 3-1, ..., 3-3 are formed,
When the amount of vibration was expressed as acceleration at 7200 rpm at a current value of 100 mA, it was about 0.12 G, which was larger than that of the flat type vibration generator 1'-2 in FIG.

When the same vibration value of 0.1 G as that of the flat vibration generator 1'-2 of FIG. 9 is obtained, the flat vibration generator 1-1 of the present invention has a diameter of Φ0.1. When the armature coils 3-1, ..., 3-3 having a thickness of 0.5 mm are formed by winding the above-mentioned coil for 45 turns, the current value is 90.
It becomes mA (at 6036 rpm) and the number of turns is 50
, The current value is 9 at 6054 rpm.
It was possible to obtain 0 mA.

That is, the flat vibration generator 1 of the present invention 1-
In No. 1, under almost the same conditions, it is possible to obtain a larger vibration than that of the flat-type vibration generator 1′-2, and to obtain the same amount of vibration, the current value can be reduced.

According to the flat vibration generator 1-1 of the present invention, the armature coils 3-1, ..., 3-3 are respectively considered in consideration of the purpose of obtaining a large vibration and the specification current consumption. The flat coreless eccentric vibration armature 6-1 may be formed by changing the number of winding turns or changing the thickness separately.

[0059]

Second Embodiment of the Invention FIG. 6 is a plan view of a flat coreless eccentric vibration armature 6-2 showing another embodiment of the present invention. The flat coreless eccentric vibration armature 6-2 has an eccentric weight [center of gravity] at a portion where the eccentric metal weight 26 is fixed.
Is formed by removing the portion of the flat coreless armature 5 symmetrical to the above-mentioned eccentric metal weight 26 and the resin 4 in the vicinity thereof so as to be inclined.

[0060]

[Effects] According to the present invention, unlike the case where the armature coil is arranged at an eccentric position, it is formed by using a conventional three-phase flat coreless armature of an evenly arranged armature coil that is easy to manufacture. Since it is a flat-type vibration generator using the flat-type coreless eccentric vibration armature, it can be mass-produced easily and at low cost. In addition, compared with the conventional type, it is possible to obtain an extremely large amount of vibration by simply changing the shape and position of the eccentric metal weight.
Even if the thickness is m or less and the thickness is 30 mm or less, it is possible to obtain a flat-type vibration generator that is sufficiently effective in practical use.

[Brief description of drawings]

1 is an exploded perspective view of a flat type vibration generator of a first embodiment of the present invention. 2 is a vertical cross-sectional view of the flat vibration generator. 3 is a top view of a flat coreless eccentric vibration armature of the flat vibration generator. 4 is an explanatory view of an eccentric metal weight of the flat type coreless eccentric vibration armature. 5 is a development view of a field pole, a flat coreless armature including an armature coil group, a commutator including a commutator piece, and a brush. 6 is a top view of a flat coreless eccentric vibration armature showing another embodiment of the present invention. 7 is an exploded perspective view of a conventional flat vibration generator. 8 is a top perspective view of a flat coreless eccentric vibration armature showing another conventional embodiment. 9 is an exploded perspective view of a flat type vibration generator of another application related to the present inventor.

[Explanation of symbols]

1, 1'-1, 1'-2 Flat type vibration generator, 2 bearings 3-1, ..., 3-3 Coreless armature coils 3a, 3a ', 3'a, 3'a' Effective conductor parts 3b, 3'b, 3c, 3'c that contribute to the conductor part 4 that does not contribute to the generated torque 4 Resin 5 Three-phase flat coreless armature 6-1, 6-2, 6'-1, 6'-2 , 6'-3 Flat coreless eccentric vibration armature 7 Rotating shaft 8 Solder 9,9 'Case 10, 10' Bracket 11, 11 'Flat vibration generator main body 12-1, 12-2 For power supply Conductive patterns 13-1, 13-2, 13'-1, 13'-2 Brush 14-1 Positive power supply terminal 14-2 Negative power supply terminal 15 Field pole 16 Through hole 17 Power supply lead Wire wire mounting pieces 18-1, 18-2, 18'-1, 18'-2 Lead wire 19 Solder 20 Fixed shaft with collar 21 Through hole 22 Collar 23 Slider-2 4 bearing 25 cylindrical spacer 26, 26'-1, 26'-2, 26'-3 eccentric metal weight 26A start end 26B end 27 flat plate commutator substrate 28 commutator 28-1, ..., 28- 6 Commutator pieces 29, 30 Dotted line enclosure

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-292344 (JP, A) JP-A-2001-70882 (JP, A) JP-A-6-311694 (JP, A) JP-A-6-311693 (JP, A) Actual development Sho 55-79660 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02K ^7/ 00-7/20 H02K 5/00-5/26 H02K 23 / 00-23/68 B06B 1/00-3/04 H04Q 7/14

Claims (8)

(57) [Claims] 1. N is so arranged that adjacent magnetic poles have different polarities.
It is equipped with a field magnet pole formed as 2P (P is an integer of 1 or more) magnetic poles and S poles as a stator and a brush, and is face-to-face with the field magnet pole via an axial gap. And a rotor provided with a commutator electrically connected to the flat coreless armature consisting of an air-core type armature coil group formed so as to generate vibration due to centrifugal force when rotated and a rotor. In the axial gap type flat-type vibration generator, the field magnet is applied to the surface portion of the flat coreless armature in an eccentric position on the axial surface of the flat coreless armature in the forward or reverse rotation direction of the flat coreless armature. A flat-type vibration generator, characterized in that a flat-type coreless eccentric vibration armature is formed by fixing an eccentric metal weight formed so as to have a large area facing each pole. 2. The eccentric metal weight is formed such that the eccentric metal weight has a portion having a large area facing the field poles in the opposite rotation direction of the flat coreless armature. 2. A flat coreless eccentric vibration armature is fixedly mounted on the coreless armature.
The flat type vibration generator described in. 3. In the eccentric metal weight, at least one of a starting end portion which is an end portion on a rotation direction side extending in a circumferential direction thereof and an end portion which is an end portion on a counter rotation direction side is a torque generated by the armature coil. The flat-type vibration generator according to claim 1 or 2, wherein the flat-type vibration generator is opposed to the position of the conductor portion that contributes to. 4. The eccentric metal weight is opposed to the field pole in comparison with a portion of the eccentric metal weight which faces a position of a conductor portion which contributes to the torque generated by the armature coil, as compared with a portion which does not contribute to torque generated by the armature coil. The flat type vibration generator according to any one of claims 1 to 3, wherein the flat type vibration generator is formed so as to have a large area. 5. In the eccentric metal weight, one of a starting end portion and a terminating end portion extending in the circumferential direction faces a conductor portion position that contributes to the torque generated by the armature coil, and either the terminating end portion or the starting end portion. The flat type vibration generator according to any one of claims 1 to 4, wherein one of them faces a partial position of the armature coil or the like that does not contribute to the generated torque. 6. The eccentric metal weight has a terminal portion extending in the circumferential direction facing a conductor portion position which contributes to the torque generated by the armature coil, and a starting end portion which does not contribute to the torque generated by the armature coil. 2. It is opposed to
A flat-type vibration generator according to claim 5. 7. The eccentric metal weight is formed such that the width from the start end to the end extending in the circumferential direction is slightly wider than the circumferential width of one armature coil. A flat-type vibration generator according to claim 6. 8. The flat-type vibration generator uses four poles as field poles, and is formed by arranging three air-core armature coils in three phases at equal pitches so as not to overlap each other. The flat-type coreless eccentric vibration armature is made to face the field poles with an air gap in the axial direction, and the commutator is composed of six commutator pieces and is electrically slidable with the commutator pieces. The brush to be moved is formed by arranging a pair of brushes electrically connected to the positive power supply terminal side and the negative power supply terminal side at an opening angle of the width of one magnetic pole of the field pole. The flat type vibration generator according to any one of claims 1 to 7.