CN209930052U - Motor stator for hand-held electric tool - Google Patents
Motor stator for hand-held electric tool Download PDFInfo
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- CN209930052U CN209930052U CN201921203738.2U CN201921203738U CN209930052U CN 209930052 U CN209930052 U CN 209930052U CN 201921203738 U CN201921203738 U CN 201921203738U CN 209930052 U CN209930052 U CN 209930052U
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- stator
- arc step
- motor
- motor stator
- power tool
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Abstract
A motor stator for a handheld electric tool comprises a stator body, wherein a stator slot is arranged in the stator body and used for accommodating and fixing a field coil, and an arc step is fixedly arranged on the circumference of the outer contour of the stator body; and stator positioning ribs are fixedly arranged on the inner circumference of the shell and are matched with the arc steps. The utility model overcomes prior art's is not enough, through setting up the circular arc step of different diameters, fixes a position in circular arc step department through the stator location muscle to can enough realize the radial positioning of stator and prevent again that the stator from taking place to rotate, its prevent changeing the muscle for the common stator of current motor stator, can strengthen the spacing effect of preventing changeing of stator greatly.
Description
Technical Field
The utility model relates to a motor field for electric tool, concretely relates to stator for handheld electric tool's series excited machine.
Background
Motors are often provided in power tools, while ac universal motors typically include at least two stator poles with an annular yoke structure that constitutes a symmetrical geometry. The stator coils are arranged in stator slots or slots located at the periphery of the poles. When energized, the stator coils are energized with the stator poles to produce an electromagnetic field that propels the rotor to produce an electromagnetic torque.
Most of the existing motor stators are of oval, round and flat square structures, and are arranged in a shell of an electric tool, in order to fix the stator and prevent the stator from rotating, too many stator positioning ribs are needed on the inner circumference of the shell, so that the difficulty of manufacturing a die is increased, and meanwhile, the stator positioning ribs are not accurately clamped and fixed with the existing external shapes of the stator, and the service life and the quality of the whole machine are influenced; and too much stator location muscle has restricted the size of stator external diameter, influences the performance of motor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a motor stator for handing electric tool, the not enough of prior art has been overcome, cooperation department sets different diameters in order to form the circular arc step through the outline circumference with stator body and stator location muscle department, stator location muscle location is at the spacing fixed stator of circular arc step department, thereby can enough realize the radial positioning of stator through the stator location muscle and can prevent that the stator from taking place to rotate again, it prevents the commentaries on classics muscle for the common stator of current motor stator, can strengthen the spacing effect of preventing rotating of stator greatly.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a motor stator for a handheld electric tool comprises a stator body, wherein a stator slot is arranged in the stator body and used for accommodating and fixing a field coil, and an arc step is arranged on the circumference of the outer contour of the stator body; the stator comprises a shell, wherein the shell is sleeved outside the stator body, a stator positioning rib is fixedly arranged on the inner circumference of the shell, and the stator positioning rib is clamped with the arc step.
Preferably, the stator body is formed by stacking at least two stator punching sheets.
Preferably, the surface of the stator punching sheet is provided with an interlocking device, and the stator punching sheets are connected into a whole through the interlocking device.
Preferably, the diameter width of the circular arc step is 1-2 mm.
Preferably, the stator body has an outer diameter of 40-60mm in length.
Preferably, the width of the stator yoke corresponding to the stator slot is in a gradient structure.
The utility model provides a motor stator for handheld electric tool. The method has the following beneficial effects: the stator positioning rib matched with the outer contour circumference of the stator body is provided with the arc step with the diameter, and the stator positioning rib is positioned at the arc step, so that the radial positioning of the stator can be realized and the stator can be prevented from rotating through the stator positioning rib; and the maximum outer diameter of the stator body is increased within a limited casing volume, so that the motor performance can also be improved.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the stator body of the present invention;
fig. 3 is a schematic structural diagram of a fourth embodiment of the present invention;
the reference numbers in the figures illustrate:
1. a stator body; 2. a housing; 3. a stator slot; 4. a rotor; 5. a circular arc step; 6. stator positioning ribs; 7. an interlock device; 8. and a magnetic field coil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.
In a first embodiment, as shown in fig. 1 to 2, a motor stator for a handheld electric tool includes a stator body 1 and a housing 2, a stator slot 3 is provided inside the stator body 1, a rotor 4 is coaxially installed in the middle of the stator body 1, the stator slot 3 is used for accommodating and fixing a field coil 8, and an arc step 5 is provided on the circumference of the outer contour of the stator body 1; casing 2, 2 covers of casing are established in the outside of stator body 1, and the circumference is gone up to fix and is provided with stator location muscle 6 in casing 2, and stator location muscle 6 supports with circular arc step 5 mutually the card.
Wherein, the magnetic field coil 8 can be wound into a shape matched with the accommodating groove through an electromagnetic wire; the stator positioning ribs 6 in the shell 2 are matched on the circumference of the outer contour of the stator body 1, and a plurality of sections of circular arcs are correspondingly arranged, and the circular arc steps 5 are formed on the outer contour of the stator body 1, so that the radial positioning of the stator can be realized, the stator can be prevented from rotating under the matching action of the stator positioning ribs 6 and the circular arc steps 5, the stator can be prevented from rotating relative to the common stator anti-rotation ribs of the existing motor stator, and the limiting and anti-rotation effects of the stator can be greatly enhanced; and because the power of the motor is increased along with the square of the diameter of the stator body 1, the maximum outer diameter of the stator body is increased in the limited machine shell volume, so that the motor performance can be improved.
In the second embodiment, based on the further improvement of the first embodiment, the stator body 1 is formed by stacking at least two stator laminations. The stator punching sheets can be connected through a welding mode, an interlocking device 7 can also be arranged on the surfaces of the stator punching sheets, and the stator punching sheets are connected into a whole through the interlocking device 7.
In the third embodiment, based on the further improvement of the first embodiment, in the present embodiment, the diameter width of the circular arc step 5 may be set to 1 mm. Therefore, in the limited machine shell volume, the positioning function can be achieved through the stator positioning ribs 6, and the performance of the motor can be improved. For example, as shown in fig. 2, in the present embodiment, the outer diameter dimension D1 of the position of the stator body 1 radially fitted with the stator positioning rib 6 is 46mm, and the maximum outer diameter D2 of the stator body 1 is 48 mm; the diameter width of the arc step 5 is 1mm, and the arc step 5 and the stator positioning rib 6 can play a good matching role and cannot influence the normal operation of the motor.
In a fourth embodiment, based on a further improvement of the first embodiment, as shown in fig. 3, the width of the stator yoke corresponding to the stator slot 3 may be in a gradient structure; by adopting the stator structure of the stator yoke parts with different widths of multiple sections, more field coils 8 are filled, and then the slot filling rate is improved, so that the copper loss is reduced.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. A motor stator for a hand held power tool, comprising: the stator comprises a stator body (1), wherein a stator slot (3) is arranged in the stator body (1), the stator slot (3) is used for accommodating and fixing a field coil (8), and an arc step (5) is arranged on the circumference of the outer contour of the stator body (1);
the stator comprises a shell (2), wherein the shell (2) is sleeved outside the stator body (1), a stator positioning rib (6) is fixedly arranged on the inner circumference of the shell (2), and the stator positioning rib (6) is clamped with an arc step (5) to abut against the arc step.
2. A motor stator for a hand held power tool as claimed in claim 1, wherein: the stator body (1) is formed by stacking at least two stator punching sheets.
3. A motor stator for a hand held power tool as claimed in claim 2, wherein: the surface of the stator punching sheet is provided with an interlocking device (7), and the stator punching sheets are connected into a whole through the interlocking device (7).
4. A motor stator for a hand held power tool as claimed in claim 1, wherein: the diameter width of the arc step (5) is 1-2 mm.
5. A motor stator for a hand held power tool as claimed in claim 1, wherein: the length of the outer diameter of the stator body (1) is 40-60 mm.
6. A motor stator for a hand held power tool as claimed in claim 1, wherein: the width of the stator yoke part corresponding to the stator slot (3) is in a gradient structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921203738.2U CN209930052U (en) | 2019-07-29 | 2019-07-29 | Motor stator for hand-held electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921203738.2U CN209930052U (en) | 2019-07-29 | 2019-07-29 | Motor stator for hand-held electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209930052U true CN209930052U (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921203738.2U Active CN209930052U (en) | 2019-07-29 | 2019-07-29 | Motor stator for hand-held electric tool |
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| CN (1) | CN209930052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601391A (en) * | 2019-07-29 | 2019-12-20 | 锐奇控股股份有限公司 | Motor stator for hand-held electric tool |
-
2019
- 2019-07-29 CN CN201921203738.2U patent/CN209930052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601391A (en) * | 2019-07-29 | 2019-12-20 | 锐奇控股股份有限公司 | Motor stator for hand-held electric tool |
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