JP3179362B2 - Flat motor and power supply method for device mounting of the same motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a power supply structure of a flat motor used for a silent information source of a communication device such as a pager, a portable telephone, and the like, and a device mounting power supply method of the motor.

[0002]

2. Description of the Related Art Conventionally, a flat motor in which a power supply electrode portion made of a flexible substrate is led out of a motor has been put to practical use as a suitable one for reducing the thickness. For example, as shown in FIG. 5, a recess 11a is formed in a bracket 11 constituting a housing H by press working,
The power supply member 2 made of a flexible substrate is provided in the recess 11a.
2 are adhered via an adhesive layer 22a, and a pair of brush planting patterns 22b are provided on the upper surface of the power supplying member 22 and the power supplying electrode portion 2 is connected to the brush planting patterns 22b.
There is a flat motor in which 2c is led out of the motor. Such a flat motor can contribute to a reduction in the thickness of the motor itself because the thickness of the power supply member can be ignored.

[0003]

However, in the case of using such a flexible substrate, the substrate itself is thin and thus easily broken, and in the case of connecting lead wires of AWG30 size or the like, a UV-curable adhesive is used after the solder connection. It is necessary to protect it. Also, even when soldering directly to the power supply pattern of the printed wiring board on the device side, the power supply pattern and the power supply electrode portion 22b are far apart even if the flexible board itself is thin, so that heat transfer is difficult and soldering is difficult. It's not easy. Further, it is not cost-effective to make the through holes on the side surfaces for the purpose of ease of soldering, and it is surprisingly difficult to solder because there is no thickness on the side surfaces.

[0004]

A first object of the present invention is to prevent disconnection even when a flexible substrate is used.
The second object is to facilitate soldering even when directly soldering to the power supply pattern of the printed wiring board on the device side without incurring cost, and to ensure connection even when soldering is not performed. It is to provide a device mounting power supply method.

[0005]

The first object can be achieved by enlarging the exposed portion of the power supply electrode so as not to move. By doing so, disconnection can be prevented. The second issue is power supply
This can be achieved by exposing the poles in three directions. this
Electrode pattern on the wiring pattern of the device side by O Unisuru
Soldering can be easily performed by contacting the electrodes.
The third problem is that the contact method in which the power supply electrode is sandwiched vertically
Can be achieved. This improves contact stability.
It becomes.

[0006]

In order to solve the above-mentioned problems of the present invention, a part (1) of a housing constituting a motor is pressed into a brush base by press working.
A receiving recess (1b) is provided, and a brush base (2) made of a flexible substrate disposed in the recess is attached to a lower portion of the magnet.
In the flat motor is derived as feeding electrode portions laterally through the brush base from a portion of said housing
The terminal receiving portion (1) communicates with the storage recess (1b) and is integrated therewith.
c), and the power supply electrode portion is fixed to one surface of the terminal receiving portion via a double-sided adhesive member.
Fold it around the end of the receiving part and fix it on the other side as well.
The pattern of the power supply electrode portion (2c)
Is preferably configured to be exposed at least up and down . In this case, soldering can be extremely easily performed.

In order to mount such a flat motor on a device and supply power, the flat motor is connected to a printed wiring on the device via a double-sided adhesive member (pa).
After bonding to the plate (P), the power supply electrode portion is
It is preferable to adopt a device mounting power supply method for a flat motor which is connected to the power supply pattern (8b) of the printed wiring board by soldering . By doing so, the power supply electrode portion is reinforced by the terminal receiving portion,
There is no disconnection problem.

[0008] In another power supply method, the flat motor is connected to the female electrode on the device side.
Terminal (7) for holding, retaining means (8) and locking means
A device-mounted power supply method that is mounted on a device via (9) may be used. With this configuration, the power supply electrode portion is sandwiched between both surfaces, so that connection is ensured.

[0009]

FIG. 1 is a sectional view of a main part of an embodiment in which the present invention is applied to a flat coreless vibration motor. In the figure, 1
Is a bracket that forms a part of the housing, and a burring hole 1a is integrally raised in the center, and the shaft S is press-fitted into the burring hole 1a to hold the burring hole 1a. I have. The recess 1b extends to a terminal receiving portion 1c integrally protruding outside the bracket. In the recess 1b, FIG.
As shown in FIG. 2, a power supply member 2 made of a flexible substrate having substantially the same shape is fixed via an adhesive layer 2a on the lower surface. On the upper surface of the power supply member 2, a pair of brush
b and a solder-plated power supply electrode portion 2c is formed so as to be continuous with the brush implant pattern 2b. This power supply electrode section 2
c is extended further than the terminal receiving portion 1c, is bent at the tip of the terminal receiving portion 1c, and is fixed to the lower surface via the adhesive layer 2a. Therefore, the power supply electrode portion 2c is surely protected by the terminal receiving portion 1c and at least in two vertical directions (substantially, the tip of the terminal receiving portion 1c.
In three directions ) . With this configuration, the power supply electrode portion can be formed on at least the upper surface and the lower surface without incurring a cost increase of means such as a through hole.

[0010] 3 is a pair of brush planting patterns 2b
A ring-shaped magnet 4 is mounted on the bracket 1 outside the brush 3 so as to sandwich the power supply member 2, and a gap is formed in the magnet 4. An eccentric rotor 5 is rotatably mounted on the shaft S. The eccentric rotor 5 is formed by integrally molding a plurality of air-core coils 5a # with a highly slidable resin 5b, and the highly slidable resin 5b itself also serves as a bearing. The outer periphery of the bracket 1 is swaged in the opening of the case 6, and a hole 6 a is formed in the center of the case 6.
Is a polyester film 6b with a glue at the tip of the shaft 2.
Is held through.

In order to mount such a flat motor on a pager (product name pager) and supply power, as shown in FIG. 3, the flat motor is fixed to a printed wiring board P of a device via a double-sided adhesive film Pa and formed in advance. This can be achieved by soldering the power supply electrode portion 2c to the power supply pattern Pb. The mounting guide 6c may be extended from the case 6 as shown by an imaginary line so that positioning at the time of mounting is easy. By adopting such a method, mounting can be simplified and soldering can be facilitated.

In order to use a contact type instead of soldering as described above, a female type contact terminal 7 may be prepared on the device side so as to sandwich the power supply electrode portion 2c as shown in FIG. That is, the flat motor body is connected to the female contact terminal 7,
The power supply electrode portion 2c is inserted, and the power supply electrode portion 2c is mounted on the locking portion 8 of the retaining means of the power supply electrode portion 2c and the locking portion 9 as a locking means for preventing the motor body from coming off. In this case, it is desirable that the power supply electrode portion 2c be plated with a noble metal from the viewpoint of contact stability. By adopting such a method, it is easy to install, there is no risk of falling off, and it can be locked.
Can be securely connected.

[0013]

According to the present invention, since the power supply electrode is fixed to a part of the housing as described above, even if the flexible substrate is extremely thin, the power supply electrode is not disconnected.
When such a motor is mounted on a device, the power supply electrode portion is exposed in three directions, that is, it is also on the side surface, and therefore, it can be soldered very easily. Even in the case of a contact type instead of soldering, the connection is ensured by disposing the power supply electrode portion 2c on both the upper and lower surfaces.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of a flat motor according to the present invention.

FIG. 2 is an assembly view of members constituting the embodiment.

FIG. 3 is a cross-sectional side view of an essential part for explaining an embodiment of a method of mounting and supplying power to a flat motor according to the present invention.

FIG. 4 is a cross-sectional side view of a main part explaining another embodiment of the method.

FIG. 5 is a sectional side view of a main part showing a structure of a conventional flat motor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bracket 1b Depression 1c Terminal receiving part 2 Power supply member 2a Adhesive layer 2b Brush implantation pattern 2c Power supply electrode part 3 Brush 4 Magnet 5 Eccentric rotor 6 Case 7 Female contact terminal 8 , 9 Pb power supply pattern

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-273720 (JP, A) JP-A-4-275487 (JP, A) JP-A-3-212989 (JP, A) 66264 (JP, U) JP-A 6-62565 (JP, U) JP-A 61-88674 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02K 5/22 H02K 23 / 58

Claims (3)

(57) [Claims] 1. A part of a housing constituting a motor
(1) Press recess for brush base storage
(1b), and a brush base (2) composed of a flexible substrate disposed in the recess is passed through the lower portion of the magnet.
In a flat motor which is laterally led out as a power supply electrode portion , a part of the housing is used to store the brush base.
The terminal receiving portion (1c) is protruded integrally with the recess (1b) by communicating with the recess (1b).
Come out, both sides said feeding electrode portions on one surface of the terminal receiving portion
It is fixed through an adhesive member and
Fold it around the tip and fix it on the other side as well
Accordingly, the pattern of the power supply electrode portion (2c) is reduced.
A flat motor that is configured to be exposed vertically . 2. A flat motor according to claim 1, double-sided pressure-sensitive
Connects to the printed wiring board (P) on the device side via the attachment member (pa)
After the contact, the power supply electrode portion is supplied to the printed wiring board on the device side.
Flat motor machine connected by soldering to the electrical pattern (8b)
Mounting power supply method. 3. The flat motor according to claim 1 , wherein
When the electrode part is held between the contact terminals (7) on the device side
The device is mainly provided via the retaining means (8) and the locking means (9).
A device mounting power supply method for a flat motor mounted on a vehicle.