JP2003189522A - Small-sized flat motor, small-sized flat fan motor, air forced-supply type of air cell equipped with the same motor, small-sized flat oscillatory motor, and portable information apparatus equipped with the same motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the mounting height by making the above equipment into a thin type, and to achieve the cost reduction by reducing the number of parts, and to constitute it into a reliable one. <P>SOLUTION: This equipment is provided with plate-shaped protrudent flanges 170a-170d protruded outward from the rather lower parts of the peripheries of bobbin edges 17b-17e, and the protrudent flanges 170a-170d are constituted as the assembly base of a motor as a whole, and also the taps 10a, 10b, 11a, and 11b of coils 10 and 11 drawn out of the winding cores 12b-12e of a core 12 are hooked to the protrudent flanges 170a-170d, and the taps 10a, 10b, 11a, and 11b of these coils 10 and 11 are connected to a circuit board 19. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in a fan motor, a small flat motor including a vibration motor, a forced air supply type air battery including a fan motor, and a portable information device including a vibration motor.

[0002]

2. Description of the Related Art As an example of a small flat motor, a fan motor is illustrated. As shown in FIG.
The main component is a stator S which is mainly composed of a core 2 which is wound by being protected by winding frame edges 2a and 2b, and a yoke 4 which is equipped with a ring-shaped magnet 3 which faces the core 2 through an air gap on its inner peripheral surface. A rotor R, a rotary shaft 6 supported by a bearing 5 such as an oil-impregnated metal or a ball bearing, and a bearing house 7 in which the bearing 5 is fitted and held, and the stator S is fitted to the outside of the bearing house 7 by the core 2. There is a configuration in which the rotor R is mounted coaxially with the rotary shaft 6 and fixed together, and a plurality of blades 8 rising above the rotor R are provided.

The fan motor is used in the bearing house 7
The whole motor is constructed with a base plate B which is integrally formed with the bearing house 7 or is fixed to the bearing house 7 by caulking as an assembly base. The circuit configuration is such that a wiring board P such as a printed circuit board having an electronic component E such as a Hall element mounted on the back side is fitted to the outer circumference of the bearing house 7 and provided on the lower side of the coils 1a and 1b.
While a and 9b are inserted into the core 2 and held by the winding frame edge 2b, the a and 9b are erected on the plate surface of the connecting plate P and electrically connected to the terminal pads, and the taps of the coils 1a and 1b are connected to the terminal pins 9a, It is configured by being entwined with 9b and fixed by soldering.

In the fan motor, together with the connection plate P,
Since the base plate B having a predetermined plate thickness is provided,
These occupy an assembling space in the height direction, and by providing the terminal pins 9a and 9b, the coils 1a and 1
Since an assembling space for entanglement and soldering the tap of b is also required on the lower side of the connection plate P, the base plate B and the connection plate P hinder the overall construction of the motor to be thin.

In addition to that, the terminal pins 9a, 9b
Since the winding frame edge 2b is held by the winding frame edge 2b, the outer shape of the winding frame edge 2b becomes large, and the winding space of the coils 1a and 1b cannot be widened, so that the motor output corresponding to the number of windings cannot be set large. Further, when a small motor is constructed, the core 2 through which the terminal pins 9a and 9b are inserted has an adverse effect on the magnetic circuit.
Since the insulating coating of the taps entwined with a and 9b is difficult to melt by soldering, it lacks reliability.

In addition, since the terminal pins 9a and 9b are provided and the base plate B integral with the bearing house 7 is provided, the cost becomes high.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a small flat motor which can be reduced in cost and can be made thin.

In addition to the above, an object of the present invention is to provide a small flat motor which can be constructed to have excellent output performance, good circuit configuration and high reliability.

Further, the present invention provides a small flat fan motor and a vibration motor which can be configured to be thin in view of cost reduction, have excellent output performance, and have a good circuit configuration and high reliability. The purpose is to do.

Furthermore, the present invention can reduce the size of the entire device,
An object of the present invention is to provide a forced air supply type air battery and a portable information device which can be configured to have high performance and reliability.

The above-mentioned problems indicate the main objectives, and other objectives will be explained in the process of detailing the embodiments of the invention.

[0012]

According to a first aspect of the present invention, there is provided a compact flat motor having a plurality of winding core portions of a coil projecting from a central ring portion in a radial direction and protecting an winding. A rotor mainly having a core in which a coil is wound with a resin winding frame edge provided in a winding core portion, and a yoke mainly having a ring-shaped magnet facing the core through an air gap on an inner peripheral surface thereof. And a rotary shaft which is coupled to the rotor and pivotally supported by a bearing.A plate-shaped projecting flange is provided which protrudes outward from the lower outer peripheral edge of the winding frame edge, and the projecting flange serves as an assembly base for the entire motor. It is configured by

In the compact flat motor according to the second aspect of the present invention, the tap of the coil pulled out from the coil wound around the winding core portion of the core is hooked on the overhanging flange of the winding frame edge, and the winding frame edge is It is configured by connecting the tap of the coil pulled out from the overhang collar to the circuit board.

In the small flat motor according to claim 3 of the present invention, a flexible printed circuit board is provided as a circuit board, and the terminal pad of the flexible printed circuit board is exposed at a position away from the projecting flange to project the flexible printed circuit board. It is arranged on the lower side, and is configured by connecting the tap of the coil pulled out from the overhanging flange of the winding frame edge to the terminal pad of the flexible printed board.

A small flat motor according to a fourth aspect of the present invention is provided with a dish-shaped end cap having a rising flange provided with one notch for leading out the flexible printed board, and the flexible printed board is pulled out from the notch. It is constructed by fitting the end cap to the outer periphery of the brim with a rising flange and fixing it.

In the small flat motor according to the fifth aspect of the present invention, a plurality of protrusions projecting downward from the overhanging collar are provided on the edge of the winding frame, and the holes to be fitted with the protrusions are formed within the area of the flexible printed circuit board. It is provided on the bottom surface of the end cap, and the protrusions on the edge of the winding frame are fitted in the respective holes to position and fix the flexible printed circuit board and the end cap.

A small flat fan motor according to a sixth aspect of the present invention is the small flat motor according to any one of the first to fifth aspects, and is provided with a plurality of blades protruding outward from the rotor. Has been done.

A forced air supply type air battery according to a seventh aspect of the present invention comprises the small flat fan motor according to the sixth aspect.

A compact flat vibration motor according to claim 8 of the present invention is the compact flat motor according to any one of claims 1 to 5, wherein the eccentric weight is provided on the outer peripheral surface of the yoke.

According to a ninth aspect of the present invention, there is provided a portable information device including the small flat vibration motor according to the eighth aspect.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIGS. 1 to 13, FIG. 1 shows a basic form of a compact flat motor according to the present invention. This small flat motor has a coil 10 (11)
Is provided around a core 12, a rotor R in which a yoke 14 holds a magnet 13 facing the core 12 via a gap G, and a rotary shaft 16 pivotally supported by a bearing 15. The outer rotor type is constituted by fitting and fixing the rotor R on the outer side of the rotor and mounting the rotor R coaxially with the rotary shaft 16.

As shown in FIG. 2, the core 12 has a plane T-shaped winding core portion 12b protruding in four directions from a central ring portion 12a.
.About.12e (see dotted lines), and those provided with winding edges 17a, 17b to 17e of insulating resin for protecting the windings of the coils 10 and 11 are assembled. Reel edge 17a, 17
b to 17e are inner frame edges 17 that surround the outer circumference of the ring portion 12a.
a and outer frame edges 17b to 17e surrounding the laterally long tip ends of the winding cores 12b to 12e.

The outer frame edges 17b to 17e are electrically connected to the taps of the coils 10 and 11 drawn from the winding cores 12b to 12e of the core 12 to the terminal pads of the flexible printed circuit board, as will be described later. , The terminal pin is not equipped. Therefore, the outer frame edges 17b to 17e can be formed in a narrow width by keeping the winding space of the coils 10 and 11 wide with the inner frame edge 17a.

From the outer frame edges 17b to 17e, plate-like projecting flanges 170a to 170a projecting outward from the lower part of the outer periphery.
70d is provided. In addition, projections 171a and 171b (see FIG. 1) projecting downward are provided from at least two outer frame edges 17b and 17d that are positioned relative to each other.
The overhang collars 170a to 170d and the protrusions 171a,
171b including inner frame edge 17a, outer frame edge 17b, 17d
Is molded integrally with the core 12 from an insulating resin.

The coils 10 and 11 are individually wound by continuously winding in series so that the two winding core portions 12b, 12d, 12c and 12e located in central symmetry have the same pole. . From each of the coils 10 and 11, taps 10a, 10b and 11 which are electrically connected to the terminal pads of the flexible printed circuit board will be described later.
a and 11b are pulled out. Each tap 10a,
10b, 11a, 11b are pulled out by being hooked on the protruding flanges 170a to 170d of the outer frame edges 17b to 17e.

The taps 10a of the coils 10 and 11,
10b, 11a, and 11b are overhang collars 170a to 170.
By hanging from the notches 172a to 172d provided on the plate surface of d, a part of the projecting flanges 170a to 170d is entangled and stopped as a winding frame. This overhang collar 170a-1
The entangled side of the coils 10 and 11 in 70d is the coil 1
It is preferable that the wall thickness is thinned by a thickness corresponding to the wire diameters of 0 and 11 and at least the lower surfaces of the overhang collars 170a to 170d are kept flush with the entanglement lines of the coils 10 and 11 (see FIG. 1).

In the coils 10 and 11, the winding space is kept wide between the inner frame edge 17a and the outer frame edges 17b to 17e, and the winding core portions 12b to 12e of the core 12 are controlled by a large number of windings.
The motor output can be set to a large value by winding it around. Further, since the core 12 is not provided with the terminal pin as described above, and the core 12 is not provided with the through hole for inserting the terminal pin, the circuit can be configured as a good magnetic circuit.

In the rotor R, the shaft upper end side of the rotary shaft 16 is inserted into the central boss portion 18a, and the cylindrical yoke 14 is inserted near the outer periphery of the disk portion 18b which projects from the central boss portion 18a in an umbrella shape. Boss 18a
The disk portion 18b is formed by resin molding. The rotor R has a cup-like shape in which the stator S can be housed inside by mounting a ring-shaped magnet 13 facing the core 2 via a gap G on the inner peripheral surface of the yoke 14.

As the bearing 15, a fluid dynamic bearing is provided. The dynamic pressure bearing includes a cup-shaped bearing house 15a, a dynamic pressure sleeve 15b fitted and fixed inside the bearing house 15a, and a thrust plate 15c assembled to the inner surface of the bottom of the bearing house 15a.
The dynamic pressure sleeve 15b is fitted inside the bearing house 15a and is fixed by being pushed in by the collar 15d.
Is supported by the bearing hole 15e of the dynamic pressure sleeve 15b, and the shaft end of the rotary shaft 16 is supported by the thrust plate 15c.
It is assembled so that it can be applied to the plate surface of.

The dynamic pressure sleeve 15b is designed as a low noise motor having a stable rotation speed and a long life.
A receiving groove 150 (see the line drawing portion) for containing a fluid is provided on the circumferential surface of the bearing hole 15e as shown in FIG. The fluid receiving groove 150 is formed so that the lubricating oil can circulate and flow by providing the dynamic pressure generating grooves 150b and 150c which are continuous upside down from the central wide groove 150a.

Along with the fluid receiving groove 150, as shown in FIGS. 4 and 5, a fluid pool 15 for containing replenishing lubricating oil for suppressing oil loss due to heat generation and the like accompanying motor operation.
1 is provided around the outer circumference of the dynamic pressure sleeve 15b so as to communicate with the receiving groove 150 in the lower gap 152 (see FIG. 1). The fluid pool 151 (hereinafter, one of the fluid pools is denoted by a reference numeral) is divided into a plurality of partition walls 151a that come into contact with the inner surface of the bearing house 15a, and a top surface portion 151b extending between adjacent partition walls 151a. Notch space 151c
Is formed as.

As shown in FIG. 6, the motor drive circuit has three lead patterns 191a to 191c from a connecting portion 19a provided with three terminal pads 190a to 190c.
The flexible printed circuit board 19 following the lead-out portion 19b provided with is formed into a circuit. The flexible printed circuit board 19 has winding frame edges 17b, 1 shown in FIG.
7d protrusions 171a and 171b are fitted with holes 192
a and 192b are provided within the area of the connection portion 19a. In addition, four lead-out patterns 193a to 1a to which hall elements for detecting the rotational position are mounted to face the core 12 are attached.
93d is provided.

In addition to the above-mentioned components, the end cap 2 made of a metal material such as aluminum as shown in FIG.
0 is provided. This end cap 20
It is a dish shape having a rising flange 20a that fits around the outer circumferences of the projecting collars 170a to 170d, and is formed by providing a cutout 20b for drawing out the lead-out portion 19b of the flexible printed board 19 on the rising flange 20a. Further, on the bottom surface, the protrusions 171 of the reel edges 17b and 17d are provided.
Apertures 20c and 20d that fit with a and 171b are provided so as to be aligned with the apertures 192a and 192b of the flexible printed circuit board 19.

In order to assemble the entire motor from the above-mentioned components, the stator S is attached integrally with the bearing 15 by fitting the core 12 into the outside of the bearing house 15a at the central ring portion 12a. The rotor R is axially supported by the bearing 15 by press-fitting the rotary shaft 16 into the bearing hole 15e of the dynamic pressure sleeve 15b. Flexible printed circuit board 19
Connects the connection portion 19a to the bearing house 15a and the reel edge 1
Overhang collars 170a to 170 including 7a and 17b to 17e
It is applied to the lower side of d and assembled.

In the flexible printed circuit board 19, as shown in FIG. 8, the terminal pads 190a to 190c are exposed at positions away from the projecting flanges 170a to 170d of the outer frame edges 17b to 17e, and the projecting flanges 170a to 170d are exposed.
It is placed on the lower side of. This flexible printed circuit board 19 has holes 192a, 19a in the connection portion 19a.
2b is a protrusion 171a, 171b of the outer frame edges 17b, 17d.
The terminal pad 190a
~ 190c is accurately positioned and assembled.

On the flexible printed circuit board 19,
The coils 10 and 11 drawn out from the winding core portions 12b to 12e of the core 12 are taps 10a, 10b, 11a and 11b.
The terminal pads 190a to 190c of the connection portion 19a
It is electrically connected by being fixed by soldering. Of these two coils 10 and 11, one is connected to one terminal pad with two taps as common, and the other one is configured by individually connecting each tap to two terminal pads. There is.

When the coils 10 and 11 are soldered, the terminal pads 190a to 190c overhang and the brim 170a to 170a.
Since it is arranged at the exposed position of the connection portion 19a which is separated from 170d, the tap 1 of the pre-soldered coils 10 and 11
0a, 10b, 11a, 11b to the terminal pad 19
0a to 190c can be simply and electrically connected for reliable connection. Further, the taps 10a, 10b, 11a, 11b of the coils 10, 11 are provided with an overhanging collar 17.
Since it is hooked onto 0a to 170d and pulled out, it can be stably soldered and fixed to the terminal pads 190a to 190c.

On the flexible printed circuit board 19,
The hall element 21 has four lead-out patterns 193 a to 19
It is mounted by soldering to 3d. With this circuit configuration, the magnet 13 is magnetized into four poles in the diametrical direction and positioned relative to the core 12, and can be configured as a predetermined drive circuit in which the position timing can be taken by the hall element 21.

The end cap 20 is attached by pulling out the lead-out portion 19b of the flexible printed board 19 from the notch 20b of the end cap 20 and fitting the rising flange 20a to the outer periphery of the flanges 170a to 170d. This end cap 20 also
The holes 20c and 20d are formed on the outer frame edges 17b and 17d by the projection 1
71a and 171b can be fitted together to be accurately positioned and fixed.

In the end cap 20, the projections 171a and 171b of the outer frame edges 17b and 17d projecting from the holes 20c and 20d of the flexible printed circuit board 19 as well as the hole 192a and 192b of the plate surface are joined to the outer frame edges 17b and 17d.
The protrusions 171a and 171b of d are adhesively fixed, and the outer peripheries of the overhang collars 170a to 170d are chamfered obliquely (see FIG. 1), and the adhesive 22 is overhanged.
It can be attached and fixed by filling and fixing the outer periphery of 170d.

When the end cap 20 is provided, the connection portion 19a of the flexible printed board 19 is connected to the winding frame edge 17.
b to 17e are positioned on the lower side to be installed inside so as to be protected, and overhang collars 170a to 170d.
By covering the outer periphery of the motor, the motor as a whole can be assembled to be robust.

In the small flat motor configured as described above,
Taps 10a, 10b, 11a, 1 of the coils 10, 11
1b is hooked on the overhang collars 170a to 170d and applied to the lower side of the overhang collars 170a to 170d.
By electrically connecting with 90c, the reel edge 17b-
The overhanging collars 170a to 170d including 17e serve as a base for assembling the entire motor, and are also configured as a mounting base to be mounted on a mounting substrate of a device body including a forced air supply type air battery and a portable information device.

Since the projecting flanges 170a to 170d are integrally provided by projecting outwardly from the winding frame edges 17b to 17e which protect the winding of the core 12, the coils 10 and 1 are provided.
Together with the core 12 around which 1 is wound, it serves as a support base for the bearing 15 fitted and fixed to the core 12. Moreover, since the flexible printed circuit board 19 is placed on the lower side, the flexible printed circuit board 19 serves as an assembly base,
Further, it serves as a mounting base for the end cap 20 into which the end cap 20 is fitted and fixed. For this reason, overhanging collar 1
Since 70a to 170d serve as a base for assembling the entire motor instead of the base plate, the height direction of the entire motor can be suppressed low, and the entire motor can be made thin.

In addition to this, taps 10a, 10b, 11a, 11 of the coils 10, 11 pulled out from the cores 12b-12e of the core 12 without the terminal pin are provided.
In order to electrically connect b to the terminal pads 190a to 190c of the flexible printed circuit board 19, the coil 1
A winding space of 0 and 11 is provided for the inner frame edge 17a and the outer frame edge 17b.
It is possible to set the motor output to a large value by keeping a wide range between ˜17e and increasing the number of windings. In addition, a space for soldering and fixing the taps 10a, 10b, 11a, 11b of the coils 10, 11 is extended and flanges 170a to 170a are provided.
Since it does not need to be provided on the lower side of d, the height direction of the entire motor can be suppressed low.

Since the core 12 is not provided with a through hole for inserting a terminal pin, a good magnetic circuit can be formed by the core 12 and the taps 10a, 10b, 11a, 11b of the coils 10, 11 are extended. 170a ~
Coil 1 by hanging it on 170d and pulling it out
The 0 and 11 taps 10a, 10b, 11a and 11b can be stably connected to the terminal pads 190a to 190c, and the reliability of the circuit configuration can be improved.

With the end cap 20, the reel edge 1
7b to 17e protect the wire connection portion 19a of the flexible printed circuit board 19 applied to the lower side,
By covering the outer peripheries of 70a to 170d, the motor as a whole is assembled to be robust. Besides, at least the terminal pin can be reduced as an assembly part,
The cost can be reduced. Further, by providing a fluid dynamic bearing as the bearing 15, a low-noise motor having a stable rotation speed and a long life can be configured.

The small flat motor is shown in FIGS.
A plurality of blades 23a, 23b, ... Are raised from the disk portion 18b of the rotor R and integrally molded with resin to form a small flat fan motor. Since this fan motor can be downsized and thinned as a whole, as shown in FIG. 11, it is installed in a blower hood 24 having an air intake port 24a and an air outlet port 24b so that it can be used as a mobile phone or an electronic notebook. It is suitable for constructing a forced air supply type air battery to be installed in portable information equipment.

The forced air supply type air battery is a primary battery in which an activated carbon electrode is used as an anode and zinc is used as a cathode, and air is used as an anode active material, which is 30 to 4 compared to a manganese dry battery.
About 0% lighter. Further, since the fan motor installed therein is small, thin, and has a long life, the entire device can be made smaller, thinner and lighter, and the life can be extended.

Besides, as shown in FIG. 12, the eccentric weight 2
By providing 5 on the outer peripheral surface of the yoke 14, a small flat vibration motor can be configured. This eccentric weight 25 is shown in FIG.
As shown in FIG. 3, a part of the outer circumference of the rotor R, for example, one that covers the angle range of 120 ° to 150 ° in the circumferential direction of the yoke 14 may be provided.

The small flat vibration motor can be mounted on a portable communication device such as a pager or a mobile phone as an alarm device of a vibration calling system. In this portable communication device, since the mounting height of the entire motor can be suppressed, the overall size of the device can be reduced, and the electrical circuit of the device main body and the lead-out portion 19b of the flexible printed circuit board 19 can be reliably electrically connected. Can be configured to be reliable.

Although the specific examples described above exemplify a small flat fan motor and a vibration motor, they can also be applied to the construction of a small flat motor for outputting a rotational force.

[0052]

As described above, according to the small flat motor according to the first aspect of the present invention, the winding core is protected by the plurality of coil core portions protruding in the radial direction from the central ring portion. A stator having a core around which a coil is wound by providing a winding core edge of an insulating resin on a winding core portion, and a yoke mainly including a ring-shaped magnet facing the core through an air gap on an inner peripheral surface. It has a rotor and a rotating shaft that is connected to the rotor and rotatably supported by bearings.A plate-shaped overhanging flange that protrudes outward from the lower outer peripheral edge of the winding frame edge is provided. As a result, the entire motor can be made thin and the mounting height can be suppressed.

According to the small flat motor of the second aspect of the present invention, the tap of the coil pulled out from the coil wound on the winding core portion of the core is hooked on the overhanging flange of the winding frame edge, and the winding frame is wound. The coil tap that is pulled out from the overhang collar is connected to the circuit board, and the overhang collar on the edge is configured as the reel for the tap, so you can omit the terminal pins and make it thinner, and reduce the number of parts. It can be done and the cost can be reduced.

According to the small flat motor of the third aspect of the present invention, the flexible printed circuit board is provided as the circuit board, and the terminal pad of the flexible printed circuit board is exposed at a position away from the projecting flange to project the flexible printed circuit board. By arranging on the lower side of the tsuba and connecting the tap of the coil pulled out from the overhanging rim of the reel with the terminal pad of the flexible printed board,
The circuit configuration can be formed stably and can be configured with high reliability.

According to the small flat motor of the fourth aspect of the present invention, the dish-shaped end cap having the rising flange provided with one notch for leading out the flexible printed board is provided, and the flexible printed board is pulled out from the notch. By fitting and fixing the end cap with the rising flange to the outer periphery of the overhanging flange, the connection portion of the flexible printed circuit board can be protected, and since the outer periphery of the overhanging flange is covered, the motor as a whole can be assembled to be robust.

According to the small flat motor of the fifth aspect of the present invention, a plurality of protrusions projecting downward from the overhanging collar are provided on the edge of the winding frame, and the holes for fitting the protrusions are formed on the flexible printed circuit board. The flexible printed circuit board and the end cap are positioned and fixed by fitting the protrusions of the winding frame edge into the respective holes and positioning the position of the flexible printed circuit board and the end cap, thereby accurately positioning the connection portion and the end cap of the flexible printed circuit board. Easy to assemble.

According to the small flat fan motor of claim 6 of the present invention, the small flat motor according to any one of claims 1 to 5 is provided with a plurality of blades protruding outward from the rotor. Thus, a thin and inexpensive fan motor can be configured.

According to the forced air supply type air battery of claim 7 of the present invention, by including the small flat fan motor of claim 6, a thin and highly reliable forced air supply type air battery is obtained. It can be constructed at low cost.

According to the small-sized flat vibration motor of the eighth aspect of the present invention, the small-sized flat motor according to any one of the first to fifth aspects is thin by providing the eccentric weight on the outer peripheral surface of the yoke. It can be configured as an inexpensive vibration motor.

According to the portable information device according to the ninth aspect of the present invention, by including the small flat vibration motor according to the eighth aspect, it is cheap as a thin and highly reliable air forced supply type air battery. Can be configured.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a basic form of a small flat motor according to the present invention.

FIG. 2 is a plan view showing a stator assembled to the small flat motor of FIG.

FIG. 3 is a side sectional view showing a dynamic pressure sleeve of a fluid dynamic pressure bearing assembled to the small flat motor of FIG.

FIG. 4 is a bottom view showing the dynamic pressure sleeve of FIG.

5 is a side view showing the dynamic pressure sleeve of FIG. 3. FIG.

6 is a plan view showing a flexible printed circuit board assembled to the small flat motor of FIG. 1. FIG.

7 is a perspective view showing an end cap assembled to the small flat motor of FIG. 1. FIG.

8 is a plan view showing the internal structure of the small flat motor of FIG. 1 with the rotor removed.

9 is a side sectional view showing a fan motor constituted by the small flat motor of FIG.

10 is a plan view showing the fan motor of FIG. 9. FIG.

FIG. 11 is a perspective view showing a motor for forced air supply type air battery configured from the fan motor of FIG. 9.

12 is a side sectional view showing a vibration motor configured by the small flat motor of FIG.

13 is a plan view showing the vibration motor of FIG.

FIG. 14 is a side sectional view showing a fan motor as a small flat motor according to a conventional example.

[Explanation of symbols]

S Stator 10,11 Coil 10a, 10b Coil tap 11a, 11b Coil tap 12 Core 12a Core ring 12b to 12e Core winding core R Rotor 13 Magnet 14 Yoke 15 Bearing 16 Rotating shaft G Gap 17a, 17b 17e Coil frame edge 170a-170d Overhang collar 19 Flexible printed circuit board 19a Connection part 19b Derivation part 190a-190c Terminal pads 191a-191c Drawing patterns 192a, 192b Vent hole 20 End cap 20a Standing flange 20b Notch 20c, 20d Vent hole 21 Hall elements 23a, 23b ... Fan motor blades 24 Air blown hood 25 of forced air supply type air battery Eccentric weight of vibration motor

Front page continuation (51) Int.Cl. ⁷ identification code FI theme code (reference) H02K 7/14 H02K 7/14 A 11/00 11/00 XF term (reference) 5H032 AA01 AS03 AS12 CC22 5H604 AA08 BB01 BB14 BB15 BB16 BB17 CC01 CC05 DB01 PB03 5H605 AA08 BB05 BB10 BB14 BB19 CC02 DD03 EB03 EB06 EC01 FF00 GG04 5H607 AA12 BB01 BB09 BB14 BB17 UA25 CC01 CC03 DD02 FF04 GG01 GG02 BB01 BB02 BB01 BB02 BB01 BB01 BB02 BB02

Claims (9)

[Claims] 1. A core having a winding core portion of a coil protruding in a plurality of radial directions from a central ring portion, the winding core edge of an insulating resin protecting a winding being provided on the winding core portion to wind the coil. A small size including a stator mainly composed of a rotor, a rotor mainly composed of a yoke in which a ring-shaped magnet facing the core via a gap is mounted on an inner peripheral surface, and a rotary shaft coupled to the rotor and pivotally supported by a bearing. A small flat motor, characterized in that a flat motor is provided with a plate-shaped projecting flange that projects outward from the lower part of the outer periphery of the winding frame edge, and the projecting flange is configured as an assembly base for the entire motor. 2. A coil tap drawn from a coil wound on a winding core portion of a core is hooked on an overhanging flange of a winding frame edge, and a tap of the coil pulled out from the overhanging flange is connected to a circuit board. The small flat motor according to claim 1. 3. A flexible printed circuit board is provided as the circuit board, the terminal pad of the flexible printed circuit board is exposed at a position away from the projecting flange, the flexible printed circuit board is arranged on the lower side of the projecting flange, and the reel edge is projected. The small flat motor according to claim 1 or 2, wherein a tap of the coil pulled out from the flange is connected to a terminal pad of the flexible printed circuit board. 4. A dish-shaped end cap having a rising flange provided with one notch for leading out the flexible printed circuit board is provided, the flexible printed circuit board is pulled out from the notch, and the end cap is extended by the rising flange and fitted on the outer periphery of the collar. The small flat motor according to claim 3, which is fixed together. 5. A plurality of protrusions projecting downward from the overhanging collar are provided on the edge of the winding frame, and holes for fitting with the protrusions are provided in the area of the flexible printed circuit board and on the bottom surface of the end cap. 5. The small flat motor according to claim 4, wherein the flexible printed circuit board and the end cap are positioned and fixed by fitting the holes to the respective holes. 6. The small flat fan motor according to claim 1, further comprising a plurality of blades projecting outward from the rotor. 7. A forced air supply type air battery comprising the small flat fan motor according to claim 6. 8. The small flat motor according to claim 1, wherein an eccentric weight is provided on the outer peripheral surface of the yoke. 9. A portable information device comprising the small flat vibration motor according to claim 8.