CN205595957U - Electric tool's motor structure - Google Patents
Electric tool's motor structure Download PDFInfo
- Publication number
- CN205595957U CN205595957U CN201620340043.9U CN201620340043U CN205595957U CN 205595957 U CN205595957 U CN 205595957U CN 201620340043 U CN201620340043 U CN 201620340043U CN 205595957 U CN205595957 U CN 205595957U
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- Prior art keywords
- brush
- motor casing
- electric tool
- installing hole
- straight line
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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.)
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Abstract
The utility model discloses an electric tool's motor structure, including the motor casing, the motor casing internal fixation is provided with left brush and right brush, is provided with the first mounting hole and the second mounting hole that are used for installing the stator in the motor casing, are characteristics that the formation scope is 5 between first mounting hole and second mounting hole place straight line and left brush and the right brush place straight line 30 the contained angle, the commutation spark has been improved effectively to the advantage, and the brush requirement reduces after improving the condition of commutation to reduce machine cost, improved machine performance, and improved the life of machine.
Description
Technical field
This utility model relates to a kind of electric tool, especially relates to the electric machine structure of a kind of electric tool.
Background technology
At present, the electric machine structure of electric tool generally comprises motor casing, the brush being fixed in casing, is fixed in casing
Stator, the rotor that is arranged in stator, rotor is provided with diverter, during use, brush matches with diverter.Electricity
In use, the situation causing machine premature failure because the commutator's spark is big is a lot of for power driven tools.Ask for solving this
Topic, existing electric tool typically uses following measure: by means of the wiring of partial rotor coil to diverter, will rotor line
Circle is received the position of commutator segment and is borrowed an inclined angle, is dropped by wiring inclined 1-2 commutator segment before the direction of rotation of rotor
The spark that low diverter produces.But in actual applications, but because of spooler installation reason, it is relatively big that inclined sheet angle can not be done,
The particularly motor of relatively high power, it is the most undesirable that spark improves effect.For improving spark further, it has to use performance
Preferably brush, cost the most also increases.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of low cost and is effectively improved the electronic of the commutator's spark
The electric machine structure of instrument.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is: the electric machine structure of a kind of electric tool, bag
Include motor casing, be fixedly installed left brush and right brush in described motor casing, be provided with for pacifying in described motor casing
Set son the first installing hole and the second installing hole, the first described installing hole and the second described installing hole place straight line with
Between described left brush and described right brush place straight line, forming range is the angle of 5 °-30 °.
Further preferred scheme of the present utility model is: the rotation direction phase forming direction and rotor of described angle
Unanimously.
Further preferred scheme of the present utility model is: described angle is 11.25 °.
Further preferred scheme of the present utility model is: described angle is 16.875 °.
Further preferred scheme of the present utility model is: described angle is 22.5 °.
Compared with prior art, the utility model has the advantage of the first installing hole and the second installing hole place straight line and left electricity
Between brush and right brush place straight line, forming range is the angle of 5 °-30 °, in the feelings keeping rotor, brush position is constant
Under condition, adjust motor casing inner stator installing hole along the inclined angle of rotor rotation direction, will be formed by stator enamelled wire
Magnetic field rotates, toward along rotor rotation direction, the effect that an angle reaches to commutate in advance, effectively improves commutation spark,
After improving condition of commutation, brush requirement reduces, thus reduces machine cost, improves machine serviceability, and improves
Service life of machine.
Accompanying drawing explanation
Fig. 1 is the structural representation of motor casing in this utility model embodiment one；
Fig. 2 is the structural representation in this utility model embodiment one between motor casing and stator；
Fig. 3 is the magnetic field structure schematic diagram under existing electric machine structure original state；
Fig. 4 is the magnetic field structure schematic diagram under original state of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Embodiment one, as it can be seen, the electric machine structure of a kind of electric tool, including motor casing 1 and stator 3, stator 3
Including stator enamelled wire 5 and stator core 6, in motor casing 1, it is fixedly installed left brush 21 and right brush 22, left electricity
It is provided with diverter 4 between brush 21 and right brush 22, in motor casing 1, is provided with the first installing hole for installing stator 3
31 and second installing hole 32, stator 3 is fixed on the first installing hole 31 and the second installing hole 32 by stator core 6,
Between first installing hole 31 and the second installing hole 32 place straight line L1 and left brush 21 and right brush 22 place straight line L2
Forming the angle of 22.5 °, the formation direction of angle is consistent with the rotation direction of rotor (not shown).
Embodiment two, other structures are identical with embodiment one, and its difference is: the first installing hole and the second installing hole
The angle of 11.25 ° is formed between place straight line and left brush and right brush place straight line.
Embodiment two, other structures are identical with embodiment one, and its difference is: the first installing hole and the second installing hole
The angle of 16.875 ° is formed between place straight line and left brush and right brush place straight line.
Above the electric machine structure of a kind of electric tool provided by the utility model is described in detail, used herein
Principle of the present utility model and embodiment are set forth by specific case, and the explanation of above example is only intended to side
Assistant solves this utility model and core concept.It should be pointed out that, for those skilled in the art, not
Depart from the premise of this utility model principle, it is also possible to this utility model is carried out some improvement and modification, these improve and
Modification also falls in this utility model scope of the claims.
Claims (5)
1. an electric machine structure for electric tool, including motor casing, be fixedly installed in described motor casing left brush and
Right brush, is provided with the first installing hole for installing stator and the second installing hole in described motor casing, it is characterised in that:
The first described installing hole and the second described installing hole place straight line and described left brush and described right brush place
Between straight line, forming range is the angle of 5 °-30 °.
The electric machine structure of a kind of electric tool the most according to claim 1, it is characterised in that: described angle
Form direction consistent with the rotation direction of rotor.
The electric machine structure of a kind of electric tool the most according to claim 1, it is characterised in that: described angle is
11.25°。
The electric machine structure of a kind of electric tool the most according to claim 1, it is characterised in that: described angle is
16.875°。
The electric machine structure of a kind of electric tool the most according to claim 1, it is characterised in that: described angle is
22.5°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620340043.9U CN205595957U (en) | 2016-04-14 | 2016-04-14 | Electric tool's motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620340043.9U CN205595957U (en) | 2016-04-14 | 2016-04-14 | Electric tool's motor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205595957U true CN205595957U (en) | 2016-09-21 |
Family
ID=56935569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620340043.9U Active CN205595957U (en) | 2016-04-14 | 2016-04-14 | Electric tool's motor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205595957U (en) |
-
2016
- 2016-04-14 CN CN201620340043.9U patent/CN205595957U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |