WO2003055037A1

WO2003055037A1 - Small flat motor, small flat fan motor and air force-feeding air cell with the motor, and small flat vibrating motor and portable information equipment with the motor

Info

Publication number: WO2003055037A1
Application number: PCT/JP2002/013201
Authority: WO
Inventors: Hisafumi Yasuda; Kousuke Demachi
Original assignee: Namiki Seimitsu Houseki Kabushiki Kaisha
Priority date: 2001-12-21
Filing date: 2002-12-17
Publication date: 2003-07-03
Also published as: JP2003189522A

Abstract

A small flat motor capable of suppressing an installation height due to a reduced thickness, reducing the number of parts to reduce a cost, and increasing a reliability, comprising plate-like extension flanges (170a) to (170d) outwardly projected from the outer peripheral lower parts of winding frame edges (17b) to (17e), wherein the extension flanges (170a) to (170d) are formed as the assembly base of a motor assembly, and the taps (10a) and (10b) and (11a) and (11b) of coils (10) and (11) extracted from the core tube parts (12b) to (12e) of a core (12) are hooked to the extension flanges (170a) to (170d) and wired to a circuit board (19).

Description

Specification

Small flat motor, small flat fan motor, forced air supply type air battery equipped with the motor, small flat vibration motor, and portable information equipment equipped with the motor

The present invention relates to improvements in a small flat motor including a fan motor and a vibration motor, a forced air supply type air battery including a fan motor, and a portable information device including a vibration motor. Background art

If a fan motor is taken as an example of a small flat motor, as shown in Fig. 14, the core laminator is mainly composed of a coil la, 1 1) wound and protected by winding edges 2 &, 2b. A rotor R mainly composed of a stator S, a yoke 4 having a ring-shaped magnet 3 opposed to the core 2 through an air gap on the inner peripheral surface, and a bearing 5 such as an oil-impregnated metal or a ball bearing. And a bearing house 7 for fitting and holding the bearing 5. The stator S is fitted and fixed to the outside of the bearing house 7 with the core 2, and the rotor R In some cases, the rotor is provided coaxially with the rotary shaft 6 and a plurality of blades 8 that rise above the rotor R are provided.

The fan motor is integrally formed with the bearing house 7 or the base plate B for assembling the bearing house 7 by caulking the bearing house 7 and assembling the motor as a whole. The circuit configuration is such that a connection board P such as a printed circuit board on which an electronic component E such as a hall element is mounted on the back side is fitted to the outer periphery of the bearing house 7 and the lower side of the coils 1a and 1b. In addition, the terminal pins 9a and 9b are passed through the core 2 and held by the winding frame edge 2b, and the terminal pins 9a and 9b It is electrically connected to the node, and is configured by tying the taps of the coils 1a and 1b to the terminal pins 9a and 9b and fixing them by soldering. In the fan motor, a base plate B having a predetermined plate thickness is provided together with the connection plate P, so that these take up an assembling space in the height direction and have terminal pins 9a and 9b. An assembly space for tangling the coil 1a and lb taps and soldering is also required on the lower side of the connection 扳 P, which hinders the base plate B and the connection plate P from making the entire motor thin. Becomes

In addition, since the terminal pins 9a and 9b are held by the winding edge 2b, the outer shape of the winding edge 2b becomes large, and the winding space of the coils 1a and 1b cannot be widened. Therefore, the motor output corresponding to the number of windings cannot be set large. Also, when configuring a small motor, the holes in the core 2 that pass through the terminal bins 9a and 9b adversely affect the magnetic circuit, and furthermore, the taps that entangle with the terminal pins 9a and 9b. Since the insulation coating is difficult to melt by soldering, it lacks reliability.

In addition, by providing the terminal pins 9a and 9b and the base plate B integrated with the bearing house 7, the cost is high. Disclosure of the invention

An object of the present invention is to provide a small flat motor that can be configured to be thinner while reducing costs.

In addition, an object of the present invention is to provide a small flat motor that has excellent output performance, a 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 thinner in order to reduce cost, have excellent output performance, and have a good circuit configuration and high reliability. The purpose is to provide.

Furthermore, the present invention can reduce the size of the entire device, and achieve high It is an object of the present invention to provide a forced air supply type air battery and a portable information device which can be configured in a simple manner.

The above-mentioned problems show main objects, and other objects will be described in the process of detailing the embodiments of the invention.

In the small flat motor according to the present invention, the motor has a core portion of a coil projecting in a plurality of emission directions from a central ring portion, and a winding frame edge of an insulating resin for protecting the winding wire is provided on the core portion. A stator consisting mainly of a core with a coil wound around it, a rotor consisting mainly of a yoke with a ring-shaped magnet attached to the inner peripheral surface facing the core via a gap, and a bearing connected to the rotor It has a rotating shaft that supports the shaft, and a plate-shaped overhang that protrudes outward from the lower part of the outer periphery of the winding frame edge is provided, and the overhang is used as an assembly base for the entire motor. It is composed of:

In the small flat motor according to the present invention, the tap of the coil pulled out from the coil wound around the core portion of the core is hung on the overhang flange of the winding frame edge, and the overhang flange of the winding frame edge is provided. It is configured by connecting the tap of the coil pulled out from the circuit board to the circuit board.

In the small flat motor according to 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 separated from the overhang flange so that the flexible printed circuit board is exposed. The board is arranged below the overhang flange, and the tap of the coil pulled out from the overhang collar at the winding frame edge is connected to the terminal pad of the flexible print board. .

The small flat motor according to the present invention includes a dish-shaped end cap having a rising flange provided with one notch for leading out the flexible print substrate, and allowing the flexible print substrate to be pulled out from the notch. The end cap is fitted and fixed to the outer periphery of the overhang flange with the rising flange.

In the small flat motor according to the present invention, a plurality of projections projecting downward from the overhang flange are provided on the edge of the winding frame, and a punched hole fitted with the projection is provided. Is provided in the area of the flexible printed circuit board and on the bottom surface of the end cap, and the protrusion on the winding frame is fitted into each of the holes to position and fix the flexible printed circuit board and the end cap. It is composed of:

The small flat fan motor according to the present invention is a small flat motor and includes a plurality of blades protruding outward from a motor.

The forced air supply type air battery according to the present invention is configured by including a small flat fan motor.

The small flat vibration motor according to the present invention is a small flat motor having an eccentric weight on the outer peripheral surface of the yoke.

The portable information device according to the present invention is configured by including a small flat vibration motor. BRIEF DESCRIPTION OF THE FIGURES

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 sleep of a fluid dynamic bearing mounted on the small flat motor of FIG.

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

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

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

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

FIG. 8 is a plan view showing the internal structure of the small flat motor of FIG. 1 excluding the rotor. FIG. 9 is a side sectional view showing a fan motor constituted by the small flat motor of FIG.

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

FIG. 11 is a perspective view showing a forced air supply type air battery motor composed of the fan motor of FIG.

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

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. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a description will be given with reference to FIGS. 1 to 13. FIG. 1 shows a basic form of a small flat motor according to the present invention. This small flat motor has a stator S in which a coil 10 (11) is wound around a core 12, and a rotor R in which a magnet 13 opposed to the core 12 through a gap G is held by a yoke 14. A rotary shaft 16 supported by the bearing 15, the stator S is fitted and fixed to the outside of the bearing 15, and the rotor R is mounted coaxially with the rotary shaft 16. It is configured as an outer rotor type.

As shown in FIG. 2, the core 12 has a flat T-shaped winding core portion 12 b to l 2 e (see the dotted line) projecting in four directions from the central ring portion 12 a. The one provided with winding frame edges 17a, 17b to 17e of insulating resin for protecting the windings 0, 11 is assembled. The winding frame edges 17a and 17b to l7e are the inner frame edge 17a that surrounds the outer circumference of the ring portion 12a and the horizontal end of the winding core portion 12b to 12e. It is formed from the surrounding outer frame edges 17b to 17e.

At the outer frame edges 17b to 17e, taps of the coils 10 and 11 drawn from the cores 12b to 12e of the core 12 are provided as described later. Is it electrically connected to the terminal pad on the board? However, no terminal pins are provided. For this reason, the outer frame edges 17b to 17e can be formed to be narrow with the winding space of the coils 10 and 11 kept wide between the inner frame edges 17a.

From the outer frame edges 17 b to 17 e, plate-shaped overhangs 170 a to 170 d protruding outward from the lower part of the outer periphery are provided. Also, at least two projections 171a, 171b (see FIG. 1) projecting downward from the outer frame edges 17b, 17d which are positioned relative to each other are provided. The inner frame edge 17a, the outer frame edge 17b, and 17d, including the overhang flanges 170a to 170d and the projections 171a and 171b, are the core 12 and Molded integrally from insulating resin.

The coils 10 and 11 are wound in a series so that the two cores 12 b, 12 d, 12 c and 12 e located at the center symmetry have the same polarity. And are individually wound. As will be described later, taps 10a, 10b, 11a, and lib are electrically connected to the terminal pads of the flexible printed circuit board from the coils 10 and 11, respectively. Have been Each of these taps 10a, 10b, 11a, 1lb is pulled out by hanging it on the overhang flange 1Ί0a ~ l70d of the outer frame edge 17b ~ l7e. I have.

The taps 10a, 10b, 11a, and lib of the coils 10 and 11 are cutouts 172a to 17b on the plate surface of the overhang flange 170a to 170d. A part of the overhang flange 170 a to l 70 d is locked as a winding frame by hanging it from the 17 2 d force. The entanglement side of the coils 10 and 11 in the overhang flanges 170 a to l 70 d is formed as thin as the thickness corresponding to the wire diameter of the coils 10 and 11 and at least overhangs. The lower surface of the tsuba 170a to 170d should be kept flush with the entanglement lines of the coils 10 and 11 (see Fig. 1).

The coils 10 and 11 have a large winding space between the inner frame edge 17 a and the outer frame edge 17 b to l Ί e, and a large number of windings allows the winding of the core 12. Large motor output by winding around cores 12b to 12e Can be set to Further, since the terminal pins are not provided as described above, the core 12 is not provided with a hole through which the terminal pins pass, so that a favorable magnetic circuit can be configured.

The rotor R inserts the upper end of the shaft of the rotary shaft 16 into the central boss portion 18a, and a disk portion that projects a cylindrical yoke 14 from the central boss portion 18a in an umbrella shape. It is configured by inserting near the outer periphery of 18 b and resin-forming the disk portion 18 b from the boss portion 18 a. The rotor R is provided with a ring-shaped magnet 13 facing the core 2 via the gap G on the inner peripheral surface of the yoke 14 so that the stator S can be accommodated inside the cup. It is configured in a shape.

As the bearing 15, a fluid dynamic bearing is provided. This dynamic pressure bearing is assembled to a cup-shaped bearing house 15a, a dynamic pressure sleeve 15b fitted and fixed inside the bearing house 1'5a, and a bottom inner surface of the bearing house 15a. With the thrust plate 15c, the dynamic pressure sleeve 15b is fitted into the bearing house 15a, pushed and fixed with the collar 15d, and the rotary shaft 16 is attached to the dynamic pressure sleeve 1. The shaft is supported by the bearing hole 15e of 5b, and a thread is provided so that the shaft end of the rotary shaft 16 is applied to the plate surface of the thrust plate 15c.

As shown in Fig. 3, the hydrodynamic sleeve 15b has a receiving groove 1550 (line drawing) to accommodate a fluid as shown in Fig. 3 so that it can be configured as a low-noise motor with a stable rotation speed and a long life. Is provided on the circumferential surface of the bearing hole 15 e. This fluid receiving groove 150 is provided with dynamic pressure generating grooves 150b and 150c that are connected in the upside-down direction from the central wide-band cleaner 150a, so that lubricating oil is provided. It is formed so that it can be circulated.

Along with the fluid receiving groove 150, as shown in FIG. 4 and FIG. 5, a fluid reservoir 1501 containing replenishing lubricating oil for suppressing oil loss due to heat generation due to motor operation is provided on the lower side. It is provided around the outer circumference of the dynamic pressure sleeve 15b so as to communicate with the receiving groove 150 with a gap 152 (see Fig. 1). The fluid reservoir 1 5 1 (hereinafter, one of the fluid reservoirs is denoted by a reference numeral) Notch space 15 1 c divided by a plurality of partition walls 15 1 a abutting on the inner surface of the bearing house 15 a and top surface 15 1 b extending between adjacent partition walls 15 1 a It is formed.

As shown in Fig. 6, the motor drive circuit has three drawer patterns 191a to l91c from the connection part 19a provided with three terminal pads 190a to 90c. The circuit is configured to include a flexible printed circuit board 19 following the lead-out section 19b provided with. The flexible printed circuit board 19 has punched holes 19 2 a and 19 2 b that fit with the projections 17 1 a and 17 1 b of the bobbin edges 17 b and 17 d shown in FIG. b is provided within the area of the connection portion 19a. Further, four drawer patterns 193a to l93d for mounting a Hall element for detecting a rotational position relative to the core 12 are provided.

In addition to the components described above, an end cap 20 made of a metal material such as aluminum as shown in FIG. 7 is provided. The end cap 20 is a dish-shaped one having a rising flange 20 a that fits on the outer periphery of the overhang flange 170 a to l 70 d, and is formed of a flexible printed circuit board 19. It is formed by providing a cutout 20b for leading out the lead-out portion 19b in the rising flange 20a. Also, on the bottom surface, the holes 20c and 20d that fit with the projections 171a and 171b of the winding frame edges 17b and 17d are the holes for the flexible printed circuit board 19. It is provided so as to be consistent with 192a and 192b.

In order to assemble the entire motor from the components, the stator S is mounted integrally with the bearing 15 by fitting the core 12 with the central ring portion 12a outside the bearing house 15a. The rotor R is supported by the bearings 1.5 by press-fitting the rotary shaft 16 into the bearing holes 15e of the dynamic pressure sleeve 15b. The flexible printed circuit board 19 has a connecting portion 19a with a bearing house 15a and an overhanging flange 17a, 17b to 17e including a bobbin edge 17a, 17b to 17e. It is attached to the lower side of d.

The flexible printed circuit board 19 has a terminator as shown in FIG. Lupads 190a-l900c are exposed at positions outside the outer rims 17ba-17e of the outer frame edge 17ba-l70d. It is placed on the lower side of 0d. The flexible printed circuit board 19 is formed by forming the holes 192a and 192b of the connection portion 19a with the projections 171a and 171b of the outer frame edges 17b and 17d. The terminal pads 190a to 190c can be accurately positioned and assembled by fitting them into the terminal pad.

On the flexible printed circuit board 19, coils 10 and 11 drawn from the cores 12b to 12e of the core 12 are provided with taps 1Oa, l0b, 11a, 1 lb is electrically connected to the terminal pads 190a to 190c of the connection section 19a by soldering. Of these two coils 10 and 11, one is connected to one terminal pad with two taps as common, and the other is connected to one terminal pad with two terminals. The circuit is configured to be connected individually to the circuit.

The coils 10 and 11 are soldered by placing the terminal pads 190a to 190c at the exposed positions of the connecting portions 19a where the projecting flanges 170a to l70d are disengaged. Therefore, simply placing the taps 10a, 10b, 11a, and lib of the pre-soldered coils 10 and 11 on the terminal nanopads 190a to 190c is easy and easy. It is possible to make sure that it is electrically connected. The taps 10a, 10b, 11a, and 11b of the cones 10 and 11 are the forces that are pulled out by hanging over the overhanging crocodile 17 0a to l 70d. Can be soldered to terminal pads 190a to 190c with good stability.

The Hall element 21 is mounted on the flexible printed circuit board 19 by soldering it to four lead-out patterns 1993a-l93d. With this circuit configuration, the magnet 13 is magnetized into four poles in the diameter direction and is positioned relative to the core 12, and at the same time, the position of the magnet 13 is set as a predetermined drive circuit that can be obtained by the hall element 21. Can be configured.

The end cap 20 is a lead-out part 1 of the flexible printed circuit board 19 9 b is pulled out from the notch 20 b of the end cap 20, and the rising flange 20 a is fitted by being fitted over the outer periphery of the extending flange 17 Oa to 170 d. The end cap 20 can also be accurately positioned and fixed by fitting the holes 20c, 20d to the projections 171a, 171b of the outer frame edges 17b, 17d.

The end cap 20 is provided with projections 17 1 a and 17 1 b of the outer frame edges 17 b and 17 d projecting from the holes 20 c and 20 d of the flexible printed circuit board 19. With the holes 192a, 192b on the plate surface, adhesively fixed to the projections 171a, 171b of the outer frame edges 17b, 17d, and the overhang flanges 170a- The outer circumference of l70d is beveled obliquely (see Fig. 1), and the adhesive 22 can be attached and fixed by filling and fixing the outer circumference of the overhanging collar 170a-l70d. .

When the end cap 20 is provided, the connecting portion 19a of the flexible printed circuit board 19 is positioned inside the lower edge of the bobbin edge 17b to 17e to be protected and secured inside. By covering the overhang flanges 170a to 170d from the outer peripheral force, the entire motor can be assembled to be robust.

In the small flat motor thus configured, the taps 10a, 10b, 11a, and lib of the coils 10 and 11 are hooked to the overhang flanges 170a to 170d, respectively. The bobbin frame is electrically connected to the terminator pad 190 a to l 90 c of the flexible printed circuit board 19 applied to the lower side of the overhang tsuba 170 a to l 70 d. The overhang including the edges 17b to 17e The flanges 170a to 170d are used as the assembly base for the entire motor, and the mounting of the equipment itself, including the air battery with forced air supply and portable information equipment It is configured as a mounting base that can be mounted on a board.

Since the overhang flanges 170 a to l 70 d are integrally provided so as to protrude outward from the winding frame edges 17 b to l 7 e for protecting the windings of the core 12, the coil 1 Together with the core 12 around which 0 and 11 are wound, the core serves as a support base for the bearing 15 fitted and fixed to the core 12. Also, flexible printable Since the printed circuit board 19 is applied to the lower side, the flexible printed circuit board 19 serves as a thread attaching base, and further serves as a mounting base for the end cap 20 to which the end cap 20 is fitted and fixed. For this reason, the overhang flanges 170a to 170d serve as an assembly base for the entire motor that replaces the base plate, so that the height of the entire motor can be kept low and the entire motor can be made thin. it can.

In addition, taps of the coils 10 and 11 that are pulled out from the cores 12 b to 12 e of the core 12 without terminal pins 10 a, 10 b, and 11 a, 1 In order to electrically connect 1b to the terminal pad 1990a ~ of the flexible printed circuit board 19: L90c, the winding space of the coils 10 and 11 should be connected to the inner frame 1 The motor output can be set to a large value by increasing the number of windings by keeping it wide between 7a and the outer frame edge 17b to l7e. In addition, it is necessary to provide a space for soldering and fixing the taps 10a, 10b, 11a, 11b of the coils 10 and 11 on the lower side of the overhang flange 1Ί0a to l70d. Therefore, the height direction of the entire motor can be kept low.

Since the core 12 does not have a hole through which the terminal pin passes, a good magnetic circuit can be formed by the core 12, and the taps 10a, 10b of the coils 10 and 11 can be formed. By tapping 11a, lib on the overhang flanges 170a to l70d and pulling out, the taps 10a, 10b, 11a, lib of coils 10 and 11 are connected to the terminal. It can be connected to the pads 190a to 190c stably and the reliability of the circuit configuration can be improved. The end cap 20 is provided to protect the connection portion 19 a of the flexible printed circuit board 19 applied to the lower side of the winding frame edge 17 b to 17 e, and to form the extension flange 17. By covering the outer circumference of 0a to l70d, the entire motor can be assembled to be robust. In addition, the cost can be reduced because at least the terminal pins can be reduced as assembly parts. In addition, by providing a fluid dynamic bearing as the bearing 15, a low-noise motor with a stable rotation speed and a long life can be configured. In the small flat motor, as shown in FIG. 9 and FIG. 10, a plurality of blades 23 a, 23 ゎ ... are raised upward from the disk portion 18 b of the rotor 1 and resin-molded integrally. As a result, it can be configured as a small flat fan motor. In order to reduce the size and thickness of the entire motor, this fan motor should be built in a blower hood 24 having an air intake 24a and an air outlet 24b as shown in Fig. 11. Therefore, it is suitable for composing a forced air supply type air battery to be installed in portable information devices such as mobile phones and electronic organizers.

The forced air supply type air battery is a primary battery that uses activated carbon electrode as the anode and zinc as the cathode, and uses air as the anode active material. It is about 30 to 40% lighter than a manganese dry battery. In addition, the fan motor mounted on the fan motor is small, thin, and has a long service life, so that the entire device can be made smaller, thinner, lighter, and have a longer life.

In addition, by providing an eccentric weight 25 on the outer peripheral surface of the yoke 14 as shown in FIG. 12, a small flat vibration motor can be configured. The eccentric weight 25 is a part of the outer periphery of the rotor R as shown in FIG. 13, for example, extends over an angular range of 120 ° to 150 ° in the circumferential direction of the yoke 14. Should be provided.

The small flat vibration motor can be mounted on a portable communication device such as a pager or a mobile phone as a vibrating paging alarm device. In this portable communication device, the mounting height of the entire motor can be reduced, so that the size of the entire device can be reduced, and the electrical circuit of the device itself and the lead-out portion 19b of the flexible printed circuit board 19 serve as an Since the connection can be made reliably and reliably, it can be configured with high reliability.

Although the specific examples described above have exemplified a small flat fan motor and a vibration motor, they can also be applied to construct a small flat motor for outputting a rotational force. Industrial applicability

As described above, according to the small-sized flat motor according to the present invention, the winding frame edge of the insulating resin that has the winding cores of the coils projecting from the center ring in a plurality of radial directions and protects the winding is provided. A stator mainly provided with a coil provided on the winding core portion, a rotor mainly including a yoke in which a ring-shaped magnet facing the core via an air gap is mounted on an inner peripheral surface, and a rotor including: It is provided with a rotating shaft that is connected and supported by a bearing.A plate-shaped overhang is provided that protrudes outward from the lower part of the outer periphery of the rim of the winding frame. With this configuration, the entire motor can be made thin and the mounting height can be reduced.

ADVANTAGE OF THE INVENTION According to the small flat motor concerning this invention, the tap of the coil pulled out from the coil wound by the core part of a core is stopped by the overhang | collar flange of the winding frame edge, and the overhang | collaring flange of the winding frame edge is provided. Since the tap of the coil drawn out of the coil is connected to the circuit board and the overhanging flange at the edge of the winding frame is used as the winding frame of the tap, the terminal pin can be omitted to make it thinner and the number of parts can be reduced. Cost can be reduced.

According to the small-sized flat motor according to the present invention, the flexible printed board is provided as a circuit board, and the terminal pad of the flexible printed board is exposed at a position outside the protruding flange so that the flexible printed board is exposed. The printed circuit board is placed below the overhanging dot, and the coil tap that is pulled out from the overhang flange on the winding frame edge is connected to the terminal pad of the flexible printed circuit board, thereby stabilizing the circuit configuration. It can be formed and configured with high reliability.

ADVANTAGE OF THE INVENTION According to the small flat motor which concerns on this invention, it is provided with the dish-shaped end cap which has the rising flange provided with one notch which leads out a flexible printed circuit board, and a flexible printed circuit board is cut out from a notch. By pulling out the end cap and fitting it to the outer periphery of the overhang flange with the rising flange and fixing it, the connection portion of the flexible printed circuit board can be protected and the outer periphery of the overhang flange is covered. Something robust as a whole Assembled.

According to the small-sized flat motor according to the present invention, a plurality of projections projecting downward from the overhang flange are provided on the edge of the winding frame, and a hole to be fitted with the projection is formed within the area of the flexible printed circuit board. The flexible printed circuit board is connected to the flexible printed circuit board by fixing the flexible printed circuit board and end cap by positioning the flexible printed circuit board and end cap by fitting the protrusions on the winding frame edge into the respective holes. In addition, the end cap can be easily positioned and accurately assembled.

ADVANTAGE OF THE INVENTION According to the small flat fan motor which concerns on this invention, a small flat motor can be comprised as a thin and inexpensive fan motor by providing several blades which protrude outside a rotor.

According to the forced air supply type air battery according to the present invention, by providing the small flat fan motor, the thin forced air supply type air battery with high reliability can be configured at low cost.

According to the small flat vibration motor according to the present invention, the small flat motor can be configured as a thin and inexpensive vibration motor by providing an eccentric weight on the outer peripheral surface of the yoke.

ADVANTAGE OF THE INVENTION According to the portable information device which concerns on this invention, by providing a small flat vibration motor, it can be comprised cheaply as a thin and highly reliable forced air supply type air battery.

Claims

The scope of the claims

1. It has a core part of a coil that protrudes from the center ring part in a plurality of radial directions, and is provided mainly with a core around which a coil is wound by providing a winding frame part of insulating resin for protecting the winding wire on the core part. A rotor mainly composed of a yoke in which a ring-shaped magnet opposed to the core via an air gap is mounted on the inner peripheral surface; and a rotary shaft coupled with the rotor and supported by a bearing. A small flat motor comprising: a plate-shaped overhang that protrudes outward from a lower portion of the outer periphery of the winding frame edge; and the overhang is configured as an assembly base of the entire motor. .

2. The tap of the coil pulled out from the coil wound around the core of the core is hooked on the overhang flange at the edge of the winding frame, and the tap of the coil pulled out from the overhang flange is connected to the circuit board. 2. The small flat motor according to claim 1, wherein

3. A 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 outside the overhang flange, and the flexible print circuit board is exposed at the lower side of the overhang flange. 3. The small flat motor according to claim 2, wherein a tap of a coil pulled out from an overhang flange of a winding frame edge is connected to a terminal pad of the flexible printed circuit board.

4. It has a core part of a coil that protrudes from the center ring part in a plurality of radial directions. The core part is provided with a winding frame edge of insulating resin that protects the winding wire, and the coil is wound around the core. A rotor mainly composed of a yoke in which a ring-shaped magnet opposed to the core via an air gap is mounted on the inner peripheral surface; and a rotary shaft coupled with the rotor and supported by a bearing. In a small flat motor provided with: a plate-shaped overhang 張 protruding outward from a portion near the lower part of the outer periphery of the winding frame edge, and the overhang flange is configured as an assembly base of the entire motor; A flexible printed circuit board is provided, and the terminal pad of the flexible printed circuit board is exposed at a position protruding from the flange so that the flexible printed circuit board is exposed. A small flat motor in which a printed circuit board is arranged below the overhang flange, and a coil tap pulled out from the overhang flange at the winding frame edge is connected to a terminal pad of the flexible printed circuit board.

5. Equipped with a dish-shaped end cap having a rising flange with one notch to lead out the flexible printed circuit board. Flexible printed board 1 is pulled out of the notch to raise the end cap. 4. The small flat motor according to claim 3, wherein the small flat motor is fitted and fixed to an outer periphery of the overhang flange with a flange.

6. Equipped with a dish-shaped end cap having a rising flange with one notch for leading out the flexible printed circuit board, and pulling out the flexible printed circuit board from the notch to raise the end cap. 5. The small flat motor according to claim 4, wherein the small flat motor is fitted and fixed to the outer periphery of the overhang flange with a flange.

7. A plurality of protrusions projecting downward from the overhang flange are provided on the winding frame edge, 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. 6. The small-sized flat motor according to claim 5, wherein the flexible printed circuit board and the end cap are positioned and fixed by fitting the projections of the reel edge into the respective holes.

8. A plurality of protrusions protruding downward from the overhang flange are provided on the edge of the winding frame, and holes for fitting with the protrusions are provided in the area of the flexible print substrate and on the bottom surface of the end cap. 7. The small flat motor according to claim 6, wherein the flexible printed circuit board and the end cap are positioned and fixed by fitting the projections on the winding frame edges into the respective holes.

9. The small flat motor according to any one of claims 1 to 8, further comprising a plurality of blades protruding outward from the rotor.

0. A forced air supply type air battery comprising the small flat fan motor according to claim 9.

1. The small flat vibration motor according to any one of claims 1 to 8, wherein an eccentric weight is provided on an outer peripheral surface of the yoke.

2. A portable information device comprising the small flat vibration motor according to claim 11.