CN104595347A - Rotor shaft, rotor and motor - Google Patents
Rotor shaft, rotor and motor Download PDFInfo
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- CN104595347A CN104595347A CN201510039527.XA CN201510039527A CN104595347A CN 104595347 A CN104595347 A CN 104595347A CN 201510039527 A CN201510039527 A CN 201510039527A CN 104595347 A CN104595347 A CN 104595347A
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- rotor shaft
- rotor
- rear end
- end cover
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Abstract
The invention discloses a rotor shaft, a rotor and a motor. The rear end surface of the rotor shaft is configured into a spherical surface which is backwards bumped; an axial supporting point is provided on an end position of the spherical surface. The rotor shaft provided by the embodiment of the invention can reduce a friction area between the rotor shaft and the rear end surface, thus guaranteeing that the motor reliably operates, and eliminating adverse effects of cracks, shaft breakage, and the like in high-frequency quenching.
Description
Technical field
The present invention relates to technical field of motor manufacture, in particular to a kind of rotor shaft, there is the rotor of described rotor shaft and there is the motor of described rotor.
Background technique
Motor in correlation technique, its oil-impregnated bearing can not bear the axial pressure of rotor shaft, needs to utilize rear end cover axially support rotor shaft, to carry the axial pressure of rotor shaft.Some motors are reduce when rotor shaft rotates and the friction area of rear end cover, bore cone shape hole at the ear end face of rotor shaft and embed steel ball, but the machining spur due to the internal surface of cone shape hole is difficult to process, in high frequency hardening process, the positions such as machining spur, cone shape hole turning easily form gathering, cause transition to quench, thus form crackle, even off-axis.
Summary of the invention
The present invention is intended to solve one of above-mentioned technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind of rotor shaft, and this rotor shaft can reduce the friction area with rear end cover, ensures that motor is reliable, and can eliminate the harmful effect such as crackle, off-axis in high frequency hardening.
The present invention also proposes a kind of rotor with described rotor shaft.
The present invention also proposes a kind of motor with described rotor.
For achieving the above object, embodiment according to a first aspect of the invention proposes a kind of rotor shaft, and the ear end face of described rotor shaft is configured to the spherical protruded backward, and the rearmost position place of described spherical has axially support point.
The friction area with rear end cover can be reduced according to the rotor shaft of the embodiment of the present invention, ensure that motor is reliable, and the harmful effect such as crackle, off-axis in high frequency hardening can be eliminated.
In addition, rotor shaft according to the above embodiment of the present invention can also have following additional technical characteristics:
According to one embodiment of present invention, described axially support point is positioned on the central axis of described rotor shaft.
According to one embodiment of present invention, the outer surface fine grinding process of the rearward end of described rotor shaft.
According to one embodiment of present invention, the outer surface high frequency hardening process of the rearward end of described rotor shaft.
Embodiment according to a second aspect of the invention proposes a kind of rotor, and described rotor comprises the rotor shaft described in embodiment according to a first aspect of the invention.
The friction area with rear end cover can be reduced according to the rotor of the embodiment of the present invention, ensure that motor is reliable, and the harmful effect such as crackle, off-axis in high frequency hardening can be eliminated.
Embodiment according to a third aspect of the invention we proposes a kind of motor, and described motor comprises: stator; Rear end cover, described rear end cover is arranged on the rear end of described stator, is limited with bearing chamber in described rear end cover; Oil-impregnated bearing, described oil-impregnated bearing is located in described bearing chamber; Rotor, described rotor is rotatably located in described stator for the rotor described in embodiment according to a second aspect of the invention, described rotor, and the rearward end of described rotor shaft is engaged in described oil-impregnated bearing and described axially support point is supported on described rear end cover.
According to the motor of the embodiment of the present invention, there is reliable, yield rate advantages of higher.
According to one embodiment of present invention, axially support pad is provided with between described axially support point and described rear end cover.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rotor shaft according to the embodiment of the present invention.
Reference character: rotor shaft 10, spherical 11, axially support point 12.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings rotor shaft 10 according to the embodiment of the present invention is described.
As shown in Figure 1, be configured to the spherical 11 (fore-and-aft direction is as shown in the arrow A in accompanying drawing) protruded backward according to the ear end face of the rotor shaft 10 of the embodiment of the present invention, the rearmost position place of spherical 11 has axially support point 12.
It is that the spherical 11 in the present invention should be interpreted broadly that those skilled in the art needs with understanding, and spherical 11 can be whole spherical, and can be also hemisphere face, namely spherical 11 refers to all or part of of whole spherical.
According to the rotor shaft 10 of the embodiment of the present invention, by the spherical 11 that the ear end face of rotor shaft 10 is configured to protrude backward, axially support point 12 can be formed at the rearmost position place of rotor shaft 10, after rotor shaft 10 assembles, axially support point 12 can be supported on the rear end cover of motor, make rotor shaft 10 and rear end cover form point cantact, reduce when rotor shaft 10 rotates and the friction area of rear end cover, thus ensure that motor is reliable.In addition, the ear end face of rotor shaft 10 is configured to spherical, and surperficial tool marks easily process, and in high frequency hardening process, the ear end face of rotor shaft 10 does not exist shape mutation structure, eliminates the harmful effect of quenching technical.Therefore, the friction area with rear end cover can be reduced according to the rotor shaft 10 of the embodiment of the present invention, ensure that motor is reliable, and the harmful effect such as crackle, off-axis in high frequency hardening can be eliminated.
Below with reference to the accompanying drawings rotor shaft 10 according to the specific embodiment of the invention is described.
In specific embodiments more of the present invention, as shown in Figure 1, be configured to the spherical 11 protruded backward according to the ear end face of the rotor shaft 10 of the embodiment of the present invention, the rearmost position place of spherical 11 has axially support point 12.
Alternatively, as shown in Figure 1, axially support point 12 is positioned on the central axis of rotor shaft 10.Rotor shaft 10 can be made like this to be positioned on the spin axis of rotor shaft 10 with the point of contact of rear end cover, thus radial stability when guarantee rotor shaft 10 rotates.
Further, the outer surface fine grinding process of the rearward end of rotor shaft 10, to eliminate tool marks, and high frequency hardening process further, not only can increase the surface hardness of the rearward end of rotor shaft 10 thus, be convenient to the rearward end of rotor shaft 10 and coordinating of oil-impregnated bearing, and can ensure that rotor shaft 10 there will not be the phenomenon such as slight crack, fracture in high frequency hardening process.
Rotor according to the embodiment of the present invention is described below.Rotor shaft 10 according to the above embodiment of the present invention is comprised according to the rotor of the embodiment of the present invention.
According to the rotor of the embodiment of the present invention, by utilizing rotor shaft 10 according to the above embodiment of the present invention, the friction area with rear end cover can be reduced, ensureing that motor is reliable, and the harmful effect such as crackle, off-axis in high frequency hardening can be eliminated.
According to the rotor of the embodiment of the present invention other form and operation be all known for those of ordinary skills, be not described in detail here.
Motor according to the embodiment of the present invention is described below.Stator (not shown), rear end cover (not shown), oil-impregnated bearing (not shown) and rotor is comprised according to the motor of the embodiment of the present invention.
Described rear end cover is arranged on the rear end of described stator, is limited with bearing chamber in described rear end cover.Described oil-impregnated bearing is located in described bearing chamber.Described rotor is rotor according to the above embodiment of the present invention, and described rotor is rotatably located in described stator, and the rearward end of rotor shaft 10 is engaged in described oil-impregnated bearing and axially support point 12 is supported on described rear end cover.
According to the motor of the embodiment of the present invention, by utilizing rotor according to the above embodiment of the present invention, there is reliable, yield rate advantages of higher.
Further, axially support pad (not shown) is provided with between axially support point 12 and described rear end cover.In other words, described axially support pad is located between rotor shaft 10 and described rear end cover, and the axially support point 12 of rotor shaft 10 rear end is against on described axially support pad.Rotor shaft 10 can be avoided thus directly to contact with described rear end cover, thus reduce the wearing and tearing of rotor shaft 10 and described rear end cover.
According to the motor of the embodiment of the present invention other form and operation be all known for those of ordinary skills, be not described in detail here.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.In addition, the different embodiment described in this specification or example can carry out engaging and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (7)
1. a rotor shaft, is characterized in that, the ear end face of described rotor shaft is configured to the spherical protruded backward, and the rearmost position place of described spherical has axially support point.
2. rotor shaft according to claim 1, is characterized in that, described axially support point is positioned on the central axis of described rotor shaft.
3. rotor shaft according to claim 1 and 2, is characterized in that, the outer surface fine grinding process of the rearward end of described rotor shaft.
4. rotor shaft according to claim 3, is characterized in that, the outer surface high frequency hardening process of the rearward end of described rotor shaft.
5. a rotor, is characterized in that, comprises the rotor shaft according to any one of claim 1-4.
6. a motor, is characterized in that, comprising:
Stator;
Rear end cover, described rear end cover is arranged on the rear end of described stator, is limited with bearing chamber in described rear end cover;
Oil-impregnated bearing, described oil-impregnated bearing is located in described bearing chamber;
Rotor, described rotor is rotor according to claim 5, and described rotor is rotatably located in described stator, and the rearward end of described rotor shaft is engaged in described oil-impregnated bearing and described axially support point is supported on described rear end cover.
7. motor according to claim 6, is characterized in that, is provided with axially support pad between described axially support point and described rear end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039527.XA CN104595347A (en) | 2015-01-26 | 2015-01-26 | Rotor shaft, rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039527.XA CN104595347A (en) | 2015-01-26 | 2015-01-26 | Rotor shaft, rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104595347A true CN104595347A (en) | 2015-05-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510039527.XA Pending CN104595347A (en) | 2015-01-26 | 2015-01-26 | Rotor shaft, rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104595347A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201018370Y (en) * | 2007-01-22 | 2008-02-06 | 许晓华 | Rotor and rear end plate assembly structure |
| CN101383539A (en) * | 2007-09-06 | 2009-03-11 | 索尼株式会社 | Bearing unit, motor using thereof and electric device using thereof |
| CN102235277A (en) * | 2010-04-21 | 2011-11-09 | 三菱电机株式会社 | Fuel supply device |
| CN103457371A (en) * | 2012-06-01 | 2013-12-18 | 浙江三花股份有限公司 | Circulation pump, rotor structure thereof, and machining method for rotor structure |
| US20140167539A1 (en) * | 2012-12-13 | 2014-06-19 | Johnson Electric S.A. | Linear actuator |
-
2015
- 2015-01-26 CN CN201510039527.XA patent/CN104595347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201018370Y (en) * | 2007-01-22 | 2008-02-06 | 许晓华 | Rotor and rear end plate assembly structure |
| CN101383539A (en) * | 2007-09-06 | 2009-03-11 | 索尼株式会社 | Bearing unit, motor using thereof and electric device using thereof |
| CN102235277A (en) * | 2010-04-21 | 2011-11-09 | 三菱电机株式会社 | Fuel supply device |
| CN103457371A (en) * | 2012-06-01 | 2013-12-18 | 浙江三花股份有限公司 | Circulation pump, rotor structure thereof, and machining method for rotor structure |
| US20140167539A1 (en) * | 2012-12-13 | 2014-06-19 | Johnson Electric S.A. | Linear actuator |
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Application publication date: 20150506 |