CN101149388A - Motor speed measuring device of washing machine - Google Patents
Motor speed measuring device of washing machine Download PDFInfo
- Publication number
- CN101149388A CN101149388A CNA2006100157291A CN200610015729A CN101149388A CN 101149388 A CN101149388 A CN 101149388A CN A2006100157291 A CNA2006100157291 A CN A2006100157291A CN 200610015729 A CN200610015729 A CN 200610015729A CN 101149388 A CN101149388 A CN 101149388A
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- China
- Prior art keywords
- magnet
- speed measuring
- measuring device
- washing machine
- motor
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Abstract
This invention disclose a kind of motor speed measurement equipment of the washing machine, the speed measurement equipment is set in the end of the motor shaft, it includes the magnet and plastic bush, the magnet is traffic circle, forms the bush in the circle of the magnet, the bush is circle too, there are twelve - sixteen flange uniform set in the inner surface of the bush circle. The bush and the flange are made of plastic, the magnet, bush and the flange is injection molding once to in whole. The structure of this invention is simple, the fixing is convenient, and it can save the material, reduce the product cost, improve the safety of the product at the same time. This invention can be the motor speed measurement equipment of general motor such as dishwasher.
Description
Technical field
The invention belongs to a kind of motor speed measuring device, be specifically related to the motor speed measuring device that a kind of magnet and lining form one, washing machine simple in structure, easy for installation.
Background technology
In general, the motor speed of household electrical appliance such as washing machine and dish-washing machine is adjustable, and for example washing machine utilizes the effect of water and washing agent to remove dirt on (to call washings in the following text) such as clothes, beddings and the device by the clean washings of processes such as washing, rinsing, dehydration, oven dry.The washing machine of prior art comprises the casing that forms the washing machine outward appearance, the inside of casing hangs over the outer bucket of fixing on the support component and storing washings, can be rotatably set in inner and its bottom surface of outer bucket and be provided with the interior bucket that impeller and side are formed with the water hole, be arranged on the downside of outer bucket and produce impeller and the motor of the driving force of interior bucket.
Outside the bucket lower central in conjunction with fixing top and bottom be provided with motor and rotatably the support motor turning axle the bearing shell, be arranged between bearing shell and the motor and give impeller and the interior barrel of clutch mechanism of supplying with motor-driven power selectively.
Outer bucket bottom is provided with the washings of outer bucket storage to the outside drainage arrangement of discharging of washing machine.Drainage arrangement comprises by an end and is communicated with the freeing port of bucket outside and the water discharging valve that is provided with, be arranged on outer bucket bottom surface and regulate the drain motor that water discharging valve opens and closes, is communicated with the other end of water discharging valve and the washings by the water discharging valve discharge to the scupper hose of washing machine exterior guiding.
The bearing shell is installed in outer bucket lower central, and its underpart is provided with motor.On the bearing shell and below perforation the turning axle of motor is set, its inside is provided with the rotatably bearing of support motor turning axle.
When power supply is inserted stator, with form electromagnet and by and attached to the interaction between the permanent magnet of rotor inboard, drive the rotor rotation, the moment that is delivered to axle will drive the drum rotation, wash and dehydration thereby reach.
Shown in Fig. 1-2, the general brshless DC motor that uses external-rotor-type in the washing machine, brshless DC motor can be controlled the speed of motor by adjusting the direct supply of supplying with.The measurement of motor rotational speed generally is in the end of the motor shaft 2 that is connected with rotor 1 speed measuring device 3 to be installed, speed measuring device 3 is made up of last magnet 4, lower magnet 5 and plastic bushing 6, the middle through hole that forms is in the inner circumferential surface formation plastic flange 7 of through hole.Motor shaft 2 passes through hole but does not contact, and speed measuring device 3 is fixedlyed connected with electric machine casing.When motor shaft 2 rotations, by electromagnetic induction, just in speed measuring device 3, produce the voltage signal that the expression motor speed is arranged, the electromagnetism velocity gauge just can be measured rotating speed of motor according to voltage signal.
But the motor speed measuring device of prior art is made up of a plastic bushing and three parts of upper and lower two magnet, and three parts are made respectively, and then are assembled together, and increases operation and man-hour, and inconvenience is installed, and product quality also is not easy to guarantee.
Summary of the invention
The present invention proposes for the shortcoming that solves prior art, and its purpose is to provide a kind of motor speed measuring device of washing machine simple in structure, easy for installation, that can economize in raw materials again.
Technical scheme of the present invention is: a kind of motor speed measuring device of washing machine, it comprises magnet and lining, and magnet is toroidal, forms lining in the inside of the annulus of magnet, lining is toroidal, 12～16 flanges of uniform formation on the inside surface of the annulus of lining.
Outside surface one side at the annulus of magnet forms terminal box, connects signal wire in terminal box, and signal wire is connected with the electromagnetism velocity gauge.Opposite side at the outside surface of the annulus of magnet forms connecting hole, and connecting hole is fixedlyed connected with the housing of motor.
Lining and flange are made of plastics, magnet, lining and flange single injection-molded, formation one.
The present invention is simple in structure, easy for installation, can economize in raw materials again, reduced the cost of product, improved the safe reliability of product simultaneously.The all right conduct of the present invention is such as general motor speed measuring devices such as dish-washing machines
Description of drawings
Fig. 1 is the washing machine motor rotor that speed measuring device is housed of prior art and the assembling synoptic diagram of axle;
Fig. 2 is the motor for washer speed measuring device stereographic map of prior art;
Fig. 3 is the washing machine motor rotor of speed measuring device and the assembling synoptic diagram of axle of being equipped with of the present invention;
Fig. 4 is the vertical view of speed measuring device of the present invention;
Fig. 5 is the stereographic map of speed measuring device of the present invention.
Wherein:
2 of 1 rotors
Magnet on 3 speed measuring devices 4
5 lower magnets, 6 linings
7 flanges, 8 rotors
9 10 speed measuring devices
11 magnet, 12 linings
13 flanges, 14 terminal boxes
15 holes, 16 signal wires
Embodiment
With embodiment the motor speed measuring device of washing machine of the present invention is elaborated with reference to the accompanying drawings:
In the accompanying drawings, identical parts use identical symbol.
Shown in Fig. 3-5, the motor speed measuring device of washing machine of the present invention comprises magnet 11 and lining 12.Magnet 11 is toroidal, forms lining 12 in the inside of the annulus of magnet 11, and lining 12 also is toroidal, 12～16 flanges 13 of uniform formation on the inside surface of the annulus of lining 12, and lining 12 and flange 13 all are made of plastics.Outside surface one side at the annulus of magnet 11 forms terminal box 14, connects signal wire 16 in terminal box 14, and signal wire 16 is connected with the electromagnetism velocity gauge.Opposite side at the outside surface of the annulus of magnet 11 forms connecting hole 15, and connecting hole 15 is fixedlyed connected with the housing of motor.
Motor shaft 9 passes the intermediate throughholes of speed measuring device 10 but does not contact, and speed measuring device 10 is fixedlyed connected with electric machine casing by hole 15.When motor shaft 9 rotations, by electromagnetic induction, just in speed measuring device 10, produce the voltage signal that the expression motor speed is arranged, the electromagnetism velocity gauge just can be measured rotating speed of motor according to voltage signal.
The present invention is simple in structure, easy for installation, can economize in raw materials again, reduced the cost of product, improved the safe reliability of product simultaneously.The all right conduct of the present invention is such as general motor speed measuring devices such as dish-washing machines.
Claims (5)
1. the motor speed measuring device of a washing machine, comprise magnet (11) and lining (12), it is characterized in that: described magnet (11) is toroidal, inside at the annulus of magnet (11) forms lining (12), lining (12) is toroidal, 12～16 flanges of uniform formation (13) on the inside surface of the annulus of lining (12).
2. the motor speed measuring device of washing machine according to claim 1 is characterized in that: outside surface one side at the annulus of magnet (11) forms terminal box (14), connection signal wire (16) in terminal box (14), and signal wire (16) is connected with the electromagnetism velocity gauge.
3. the motor speed measuring device of washing machine according to claim 1 is characterized in that: the opposite side at the outside surface of the annulus of magnet (11) forms connecting hole (15), and connecting hole 15 is fixedlyed connected with the housing of motor.
4. the motor speed measuring device of washing machine according to claim 1, it is characterized in that: lining (12) and flange (13) are made of plastics.
5. the motor speed measuring device of washing machine according to claim 1 is characterized in that: magnet (11), lining (12) and flange (13) single injection-molded, formation one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100157291A CN101149388A (en) | 2006-09-22 | 2006-09-22 | Motor speed measuring device of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100157291A CN101149388A (en) | 2006-09-22 | 2006-09-22 | Motor speed measuring device of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101149388A true CN101149388A (en) | 2008-03-26 |
Family
ID=39250015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100157291A Pending CN101149388A (en) | 2006-09-22 | 2006-09-22 | Motor speed measuring device of washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101149388A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009012704A1 (en) * | 2007-07-22 | 2009-01-29 | Zhiheng Tian | Video camera device for detecting molten slag in flow of molten steel |
-
2006
- 2006-09-22 CN CNA2006100157291A patent/CN101149388A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009012704A1 (en) * | 2007-07-22 | 2009-01-29 | Zhiheng Tian | Video camera device for detecting molten slag in flow of molten steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20080326 |