Patent Application
20100123372
This application claims the benefit of Taiwan Patent Application No. 097144117 filed on Nov. 14, 2008, which is hereby incorporated by reference for all purposes as if fully set forth herein.
1. Field of the Invention
The present invention relates to a motor integrated to an electronic device, and more particularly to a motor, in which rotating parts and fixed parts of the motor are directly integrated to a structural part and an electronic substrate of an electronic device.
2. Related Art
Usually, in an electronic device, if a motor (or an electric motor) needs to be placed as a source of motive power of a heat sink fan or a source of vibration, the complete motor product is placed in the electronic product. In addition, in order to save the space, the circuit board needs to be manufactured to an appropriate shape, so as to match the shape of the motor product (for example, in U.S. Pat. No. 7,248,473), or the motor is independently designed and manufactured. Moreover, a mounting portion needs to be considered after the motor is already manufactured, and then the motor is connected to the circuit of the electronic device on which the motor is mounted (for example, in U.S. Pat. No. 5,943,214). Further, a miniature fan motor is directly mounted on a printed circuit board (PCB) (for example, in U.S. Pat. No. 5,478,221), in which a complete motor product is directly mounted on the circuit board through a bearing base in an axial direction or a radial direction. The adopted motor product is still independently designed and manufactured, such that it is rather difficult to thin the motor in space, and the cost is increased due to the repeated use of the resources.
The present invention is directed to a motor integrated to a structural part and an electronic substrate of an electronic device, in which rotating parts of the motor are directly combined with the structural part, and fixed parts of the motor are formed on the electronic substrate.
In order to solve the above problem, the present invention provides a motor integrated to a structural part of an electronic device and an electronic substrate correspondingly mounted on the structural part. The motor includes a based formed on the structural part, a rotor having at least one load, and a stator having a plurality of winding coils and a driving circuit respectively shaped on the electronic substrate, for driving the rotor.
In the present invention, the base of the motor component is directly formed on the structural part of the electronic device, and the motor is integrated to the existing structure of the electronic product, such that the motor is further thinned in space. In the present invention, the rotating parts (such as the bearing, the shaft, and the rotor) of the motor and a load (such as a fan blade or an eccentric block) are integrated to the structural part or a case of the existing electronic product, so as to relatively enhance the stability of the structure, reduce the parts, thus facilitating assembling and mass production. In the present invention, the winding and the driving circuit of the stator of the motor are integrated to the circuit board of the electronic product, so as to form a motor module correspondingly with the rotor portion on the electronic product component, such that the manufacture in the same batch is easily performed, the entire cost is reduced, and a thickness and number of the parts of the motor are reduced. In addition, the electronic device may be a heat sink module, an optical disc drive spindle motor, a hard disk drive, a solid-state drive (SSD), a micro-generator, a micro-pump, a cell phone, a mobile Internet device, a notebook computer, or a mini notebook computer.
The present invention will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the present invention, and wherein:
Preferred embodiments of the present invention are described in detail below with accompanying drawings.
Usually, the electronic device 10 includes the structural part 11 and an electronic part, the structural part 11 is, for example, a case, a heat sink, a press button, and the like, and the electronic part is the electronic substrates 12 such as a print circuit board (PCB) and a print circuit board assembly (PCBA) having electronic components mounted thereon. In the present invention, rotating parts of the motor 20, such as the base 21, the bearing 23, and the rotor 22 (and a fan blade, an eccentric block, or other loads), are directly integrated to the structural part, and the winding coils 241 and the driving circuit 242 of the stator 24 of the motor 20 are directly integrated to the electronic substrate 12, and manufactured in the process of manufacturing the electronic substrate 12. The driving circuit 242 according to one embodiment may not have a sensor, or may further include a sensing unit 2421, in which the sensing unit 2421 may be a sensing circuit shaped on the electronic substrate 12 or a Hall element. The rotor 22 includes a permanent magnet 221 and a yoke 222 disposed corresponding to the permanent magnet 221. The base 21 may have two different types, for example, the base 21 includes a bearing seat 211 formed on the structural part 11 and a shaft 212 disposed on the bearing seat 211, an inner diameter of the bearing 23 is connected to the shaft 212, an outer diameter of the bearing 23 is connected to the rotor 22, and the shaft 212 of the structure does not rotate. In one embodiment, the base 21 includes a bearing seat 211 formed on the structural part 11, the rotor 22 includes a shaft 212, an outer diameter of the bearing 23 is connected to the bearing seat 211, an inner diameter of the bearing 23 is connected to the shaft 212, and the shaft 212 of the structure rotates together with the rotor 22. An appropriate type of the bearing 23 in the embodiments may be selected according to the type of the motor, for example, a ball bearing or an oil-retaining bearing, but it is not limited here. For example, a lube layer having a lubricating effect is disposed between the rotor 22 and the base 21, and the lube layer may be grease, Teflon, or other metal plating layer, depending on the different aspects of the bearing 23.
According to different configuration structures of the electronic device 10, stacking positions of the rotor 22, the stator 24, and the base 21 may have different changes, for example, the rotor 22 is disposed between the base 21 and the stator 24 (as shown in
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In the present invention, the base of the motor component is directly formed on the structural part of the electronic device, such that an entire thickness is thinned. In the present invention, the rotating parts of the motor and the load are integrated to the structure or the case of the existing electronic product, so as to relatively enhance the stability of the structure, reduce the parts, thus facilitating assembling and mass production. In the present invention, the winding and the driving circuit of the stator of the motor are integrated to the circuit board of the electronic product, so as to form a motor module correspondingly with the rotor portion on the electronic product component, such that the manufacture in the same batch is easily performed, the entire cost is reduced, and a thickness and number of the parts of the motor are reduced.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 097144117 | Nov 2008 | TW | national |
