CN201766477U - Chain saw magnetor - Google Patents
Chain saw magnetor Download PDFInfo
- Publication number
- CN201766477U CN201766477U CN201020255262XU CN201020255262U CN201766477U CN 201766477 U CN201766477 U CN 201766477U CN 201020255262X U CN201020255262X U CN 201020255262XU CN 201020255262 U CN201020255262 U CN 201020255262U CN 201766477 U CN201766477 U CN 201766477U
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- CN
- China
- Prior art keywords
- rotor
- stator
- chain saw
- magneto
- assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a chain saw magnetor which comprises a rotor assembly and a stator assembly, wherein the stator assembly is arranged at the periphery of the rotor assembly; the rotor assembly comprises a rotor, a magnetic pole iron core and magnetic steel, and the magnetic pole iron core and the magnetic steel are fixed on the rotor; the stator assembly comprises a stator, a high-pressure cap, a high-voltage wire and a spark plug cap, wherein the spark plug cap is fixedly connected with the stator through the high-voltage wire, and the high-pressure cap is sleeved on the high-voltage wire; the rotor assembly is arranged on an engine crank through a center tapered hole and rotates together with the engine crank, and the stator is fixed on an engine box body; and the stator iron core and the rotor external element keep a gap of 0.3-0.5mm. The chain saw magnetor is convenient for installation and maintenance, ensures the property requirement on the engine, and lightens the weight.
Description
Technical field
The utility model relates to a kind of magneto, particularly relates to a kind of magneto that is used on the chain saw.
Background technology
Forestry machinery such as chain saw and forest fire-extinguishing machine major part is a hand-held machine, all requires miniaturization, lightweight.Existing chain saw magneto is the supporting gasoline engine magneto of chain saw, is the external-rotor-type magneto, is made up of several big parts such as rotor assembly, power coil 13, ignition coil 11, fixed base plate 12, igniters.As shown in Figure 1, its power coil, ignition coil are assembled on the fixed base plate, be fixed again and be installed on the casing of engine, rotor is installed on the bent axle with crankshaft rotating, because the restriction of outer-rotor structure, after magneto was installed on the engine, the installation site figure of Fig. 1 was seen in the position of power coil and ignition coil in the endoporus of rotor.Owing to need guarantee the ignition angle of engine with the relative position of adjusting power coil and rotor, but owing to be earlier power coil to be installed on the casing of engine, again rotor is installed on the bent axle of engine, institute is so that adjust quite difficulty, make its ignition angle can only reach 25 ° ± 5 ° scope, scattered error is quite big, and engine performance is had very big influence.Because power coil and ignition coil are installed in the inside of flywheel, its radiating condition is poor, is easy to damage, and it is very inconvenient to keep in repair.And building block quantity is many, and volume is big, has increased the weight of complete machine, causes working strength big, the operation effort.
The utility model content
Be directed to this, the purpose of this utility model is, a kind of chain saw magneto is provided, and need not to adjust, and is easy for installation, improved performance, and its ignition angle can be controlled in 25 ° ± 1 ° the scope.Guaranteed the performance requirement of engine.Both maintained easily, alleviated weight again.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of chain saw magneto, and this magneto is made up of rotor assembly and field frame assembly, and described field frame assembly is located at the periphery of rotor assembly; Described rotor assembly comprises rotor, pole core and magnet steel, and described pole core and magnet steel are fixed on the rotor; Described field frame assembly is made up of stator, cavity cap, high-voltage line and spark plug cap, and described spark plug cap is fixedlyed connected with stator via high-voltage line, and described cavity cap is set on the high-voltage line.
Preferably, described rotor side surface is provided with the fan blade that radially extends.
Preferably, 2 starting dogs of using for engine starts are installed on the described rotor fan blade side.
Preferably, described pole core is provided with two; Described magnet steel is provided with one.
Preferably, described fan blade is provided with 18～22.
Preferably, described stator is assembled in the housing by iron core, igniter, power coil, ignition coil and is formed by the epoxide resin vacuum embedding.
Compared with prior art, rotor of the present utility model is installed on the engine crankshaft by the taper hole at center, rotate with engine crankshaft, and stator is fixed on the engine housing.The gap that the outer unit of stator core and rotor keeps 0.3～0.5mm.The rotor rotation was not interfered, made stator core have enough magnetic lines of force to pass through again.Rotation with rotor, the magnetic line of force of stator core cutting rotor rotary pole, make the coil-induced generation electric current of stator power, control through igniter, generation is connected with spark plug through spark plug cap greater than the electric current of the high pressure of 20KV on ignition coil, makes the compressed fuel oil of spark plug discharge generation spark ignition make engine rotation work.
Description of drawings
Fig. 1 is the structural representation of existing product;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the cutaway view of rotor assembly;
Fig. 4 is the schematic diagram of field frame assembly;
Fig. 5 is a fundamental diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection range of the present utility model.
A kind of chain saw magneto shown in Fig. 2,3 and 4, this magneto is made up of rotor assembly 2 and field frame assembly 1, and described field frame assembly 1 is located at the periphery of rotor assembly 2; Described rotor assembly 2 comprises rotor, pole core 24 and magnet steel 23, and described pole core 24 and magnet steel 23 are fixed on the rotor; Described field frame assembly 1 is made up of stator 14, cavity cap 15, high-voltage line 16 and spark plug cap 17, and described spark plug cap 17 is fixedlyed connected with stator 14 via high-voltage line 16, and described cavity cap 15 is set on the high-voltage line 16.
The operation principle of magneto is seen Fig. 5.Rotation along with rotor, the magnetic line of force of stator core cutting rotor rotary pole, induction produces electric current on power coil T1, the positive wave electric current charges to C1 through D1, D3, T2, the negative wave electric current triggers the SCR1 controllable silicon through R1, R2, R7 and makes C1 to the elementary T2 discharge of ignition coil, and the secondary T3 induction of ignition coil produces the high voltage output greater than 20KV.Control the discharging time of C1 by elements such as R4, R5, TR1, obtain the ignition angle of engine requirement, it is lighted a fire in official hour.
When mounted, rotor is installed on the engine crankshaft by the taper hole at center, rotates with engine crankshaft.Stator is fixed on the engine housing, and relative position is seen Fig. 2.The gap that the outer unit of stator core and rotor keeps 0.3-0.5mm.The rotor rotation was not interfered, made stator core have enough magnetic lines of force to pass through again.Rotation with rotor, the magnetic line of force of stator core cutting rotor rotary pole, make the coil-induced generation electric current of stator power, control through igniter, generation is connected with spark plug through spark plug cap greater than the electric current of the high pressure of 20KV on ignition coil, makes the compressed fuel oil of spark plug discharge generation spark ignition make engine rotation work.
The utility model chain saw magneto overcomes the shortcoming of old-fashioned magneto, power coil, and the incorporate inner-rotor-type magneto of ignition coil and igniter need not to adjust, and is easy for installation, improved performance, and its ignition angle can be controlled in 25 ° ± 1 ° the scope.Guaranteed the performance requirement of engine.Both maintained easily, alleviated weight again.
It below only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. chain saw magneto, it is characterized in that: this magneto is made up of rotor assembly and field frame assembly, and described field frame assembly is located at the periphery of rotor assembly; Described rotor assembly comprises rotor, pole core and magnet steel, and described pole core and magnet steel are fixed on the rotor; Described field frame assembly is made up of stator, cavity cap, high-voltage line and spark plug cap, and described spark plug cap is fixedlyed connected with stator via high-voltage line, and described cavity cap is set on the high-voltage line.
2. chain saw magneto according to claim 1 is characterized in that: described rotor side surface is provided with the fan blade that radially extends.
3. chain saw magneto according to claim 2 is characterized in that: 2 starting dogs that supply engine start to use are installed on the described rotor fan blade side.
4. chain saw magneto according to claim 1 is characterized in that: described pole core is provided with two; Described magnet steel is provided with one.
5. chain saw magneto according to claim 2 is characterized in that: described fan blade is provided with 18～22.
6. chain saw magneto according to claim 1 is characterized in that: described stator is assembled in the housing by iron core, igniter, power coil, ignition coil and is formed by the epoxide resin vacuum embedding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020255262XU CN201766477U (en) | 2010-07-13 | 2010-07-13 | Chain saw magnetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020255262XU CN201766477U (en) | 2010-07-13 | 2010-07-13 | Chain saw magnetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201766477U true CN201766477U (en) | 2011-03-16 |
Family
ID=43719085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020255262XU Expired - Lifetime CN201766477U (en) | 2010-07-13 | 2010-07-13 | Chain saw magnetor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201766477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867275A (en) * | 2010-07-13 | 2010-10-20 | 余姚市奥鑫电器有限公司 | Chain saw magneto |
-
2010
- 2010-07-13 CN CN201020255262XU patent/CN201766477U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867275A (en) * | 2010-07-13 | 2010-10-20 | 余姚市奥鑫电器有限公司 | Chain saw magneto |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
|
| CX01 | Expiry of patent term |