CN112467900A - Rotor for generator and generator with same - Google Patents

Rotor for generator and generator with same Download PDF

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Publication number
CN112467900A
CN112467900A CN201910857615.9A CN201910857615A CN112467900A CN 112467900 A CN112467900 A CN 112467900A CN 201910857615 A CN201910857615 A CN 201910857615A CN 112467900 A CN112467900 A CN 112467900A
Authority
CN
China
Prior art keywords
claw pole
rotor
generator
outer end
fan
Prior art date
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.)
Pending
Application number
CN201910857615.9A
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Chinese (zh)
Inventor
蒋佳佳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thornger Automotive Parts China Co ltd
SEG Automotive Germany GmbH
Original Assignee
Thornger Automotive Parts China Co ltd
SEG Automotive Germany GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thornger Automotive Parts China Co ltd, SEG Automotive Germany GmbH filed Critical Thornger Automotive Parts China Co ltd
Priority to CN201910857615.9A priority Critical patent/CN112467900A/en
Publication of CN112467900A publication Critical patent/CN112467900A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/24Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/243Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K19/00Synchronous motors or generators
    • H02K19/16Synchronous generators
    • H02K19/26Synchronous generators characterised by the arrangement of exciting windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Abstract

The present disclosure relates to a rotor for a generator and a generator having the same. The rotor includes: the first claw pole and the second claw pole are matched with each other to form an accommodating space; the excitation winding is accommodated in the accommodating space; the rotor shaft penetrates through the first claw pole, the second claw pole and the excitation winding and is fixedly connected with the first claw pole, the second claw pole and the excitation winding; and the first fan is fixedly connected to the outer end face of the first claw pole, the first fan is limited with two grooves extending along the radial direction, the two grooves and the outer end face of the first claw pole respectively limit two threading channels, lead wires at two ends of the excitation winding can respectively pass through the two threading channels, ribs protruding towards the first claw pole are arranged in the two grooves respectively, and the ribs are used for pressing the lead wires of the excitation winding on the outer end face of the first claw pole. The rotor according to the present disclosure can reduce the risk of breaking the lead wires of the field winding and improve the reliability of the generator.

Description

Rotor for generator and generator with same
Technical Field
The invention relates to the technical field of generators, in particular to a rotor for a generator and a generator with the rotor.
Background
In the related art, a groove is formed in a fan of a rotor of an automotive generator, and a lead wire of a field winding of the rotor passes through the groove to be connected with a slip ring on a rotor shaft. In addition, the grooves may be filled with an insulating resin, and the groove size is generally configured to be large in order to facilitate filling of the insulating resin, and the cured insulating resin may fix the leads of the field winding. Under the working condition of high rotating speed or rapid speed change of the generator, the lead of the excitation winding accommodated in the groove is easy to break under the action of centrifugal force, so that the failure of the generator is caused.
Disclosure of Invention
The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, an object of the present disclosure is to propose a rotor for a generator capable of offsetting a centrifugal force to which a lead wire of a field winding is subjected while ensuring convenient filling with an insulating resin, thereby reducing a risk of breakage of the lead wire of the field winding and improving reliability of the generator.
Another object of the present disclosure is to propose a generator comprising the above rotor.
A rotor according to an embodiment of the present disclosure includes: the first claw pole and the second claw pole are matched with each other to form an accommodating space; the excitation winding is accommodated in the accommodating space; the rotor shaft penetrates through the first claw pole, the second claw pole and the excitation winding and is fixedly connected with the first claw pole, the second claw pole and the excitation winding; and the first fan is fixedly connected to the outer end face of the first claw pole along the axial direction, the first fan body is limited with two grooves extending along the radial direction, the two grooves and the outer end face of the first claw pole respectively and jointly limit threading channels, lead wires at two ends of the excitation winding can respectively penetrate through the two threading channels and are contained in the two threading channels, ribs protruding towards the outer end face of the first claw pole are respectively arranged in the two grooves, and the ribs are used for abutting against corresponding lead wires of the excitation winding so as to press the corresponding lead wires of the excitation winding on the outer end face of the first claw pole.
According to the rotor of the embodiment of the disclosure, the lead wire of the excitation winding can be pressed on the outer end surface of the first claw pole by forming the rib in the groove of the first fan, so that the centrifugal force applied to the lead wire of the excitation winding during the rotation of the generator rotor is offset, the risk of the lead wire of the excitation winding being broken is reduced, and the reliability of the generator is improved.
In addition, the rotor for a generator according to the above-described embodiment of the present disclosure may also have the following additional technical features.
According to some embodiments of the present disclosure, the leads of the field winding are each sheathed with an insulating protective sheath, each rib being adapted to abut against the insulating protective sheath of the corresponding lead of the field winding. Therefore, the risk of breakage of the lead wire of the field winding due to pressure generated by the rib can be reduced, and the reliability of the generator can be improved.
According to some embodiments of the present disclosure, a first fan includes a first fan body and a plurality of first fan blades. The first fan body is fixedly connected to an outer end face of the first claw pole and defines a center hole through which the rotor shaft passes, two passages are defined in the first fan body, and a plurality of first blades respectively extend from the first fan body in the axial direction away from the first claw pole so as to generate an axial airflow for cooling the generator when the rotor rotates.
According to some embodiments of the present disclosure, the two grooves are formed by recessing the first fan body away from the outer end face of the first claw pole. Therefore, the first fan is simple in structure and easy to produce and manufacture.
According to some embodiments of the present disclosure, the two grooves are symmetrically disposed about the central hole of the first fan body. Therefore, stress of the leads of the excitation windings accommodated in the two grooves in the rotating process can be uniformly distributed, and the risk of breakage of the leads of the excitation windings is reduced.
According to some embodiments of the present disclosure, each rib is located at an end of the corresponding groove near the central hole of the first fan body. Thereby being beneficial to reducing the risk that the lead of the excitation winding is broken in the rotation process of the rotor.
According to some embodiments of the present disclosure, each rib is formed by recessing a portion of the corresponding groove toward the outer end face of the first claw pole. The ribs are thus simple in construction and easy to manufacture.
According to some embodiments of the present disclosure, each groove is filled with an insulating resin. The cured insulating resin thus facilitates fixing of the lead wires of the field winding accommodated in the threading passage.
According to some embodiments of the disclosure, the outer end face of the first claw pole is a flat face. Therefore, the first claw pole can be prevented from being provided with a groove, the structure of the first claw pole is simplified, and the production cost of the first claw pole is reduced.
According to some embodiments of the present disclosure, the rotor further includes a collecting ring fixedly connected to an end of the rotor shaft protruding the first claw pole, and the collecting ring has two pins, and the leads at both ends of the excitation winding respectively pass through the two threading passages to be fixedly connected to the two pins of the collecting ring.
A generator according to a disclosed embodiment includes a stator fixedly connected between a front end housing and a rear end housing, a rotor according to the above-described embodiments, the rotor received within the stator and rotatably connected to the front end housing and the rear end housing.
According to the generator of the embodiment of the present disclosure, by adopting the rotor according to the above-described embodiment, the reliability of the generator can be improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Further features and advantages of the invention are described in the following description, which explains the invention in more detail on the basis of embodiments, in conjunction with the drawings.
FIG. 1 is a cross-sectional schematic view of a rotor for a generator according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view of section A of FIG. 1; and
fig. 3 is a schematic structural diagram of a first fan according to an embodiment of the present disclosure.
Detailed Description
Preferred embodiments of the present disclosure are described below with reference to the accompanying drawings. It is to be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like as used herein are for purposes of illustration only and are not limiting of the present disclosure.
A rotor 100 for a generator according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1, a rotor 100 according to an embodiment of the present disclosure includes a first claw pole 110, a second claw pole 120, a field winding 130, a rotor shaft 140, and a first fan 150. It is noted that the rotor 100 according to the embodiment of the present disclosure can be applied to an alternator, particularly, an alternator for an automobile.
Specifically, the first and second claw poles 110 and 120 cooperate with each other to form an accommodating space in which the field winding 130 is accommodated. The rotor shaft 140 passes through the first claw pole 110, the second claw pole 120, and the field winding 130, and is fixedly connected to the first claw pole 110, the second claw pole 120, and the field winding 130. In some examples, the rotor shaft 140 passes through a center of the first claw pole 110, a center of the second claw pole 120, and a center of the field winding 130. The first fan 150 is fixedly connected to the outer end surface of the first claw pole 110 in the axial direction, and the first fan 150 defines two grooves 1522 extending in the radial direction, and the two grooves 1522 respectively define threading passages together with the outer end surface of the first claw pole 110. The lead wires 132 at both ends of the excitation winding 130 can pass through and be received in the two threading passages, respectively. Ribs 1526 protruding toward the outer end surface of the first claw pole 110 are provided in the two grooves 1522, respectively, and the ribs 1526 are used to abut against the corresponding lead 132 of the field winding 130 so as to press the corresponding lead 132 of the field winding 130 against the outer end surface of the first claw pole 110. It should be noted that "radial" and "axial" in the present application refer to the radial direction and the axial direction of the rotor shaft 140.
According to the rotor 100 for the generator of the embodiment of the present disclosure, by forming the rib 1526 in the groove 1522 of the first fan 150, the lead wire 132 of the field winding 130 can be pressed against the outer end surface of the first claw pole 110, so that the centrifugal force to which the lead wire 132 of the field winding 130 is subjected during the rotation of the rotor 100 of the generator is offset, thereby reducing the risk of the lead wire 132 of the field winding 130 breaking and improving the reliability of the generator.
In some embodiments, as shown in fig. 2, the leads 132 of the field winding 130 are each sheathed with an insulating protective sleeve 134, and each rib 1526 is adapted to abut against the insulating protective sleeve 134 of the corresponding lead of the field winding. Therefore, the risk of breakage of the lead wire 132 of the field winding 130 due to the pressure generated by the rib 1526 can be reduced, and the reliability of the generator can be improved.
In some embodiments, as shown in fig. 3, the first fan 150 includes a first fan body 152 and a plurality of first fan blades 154. The first fan body 152 is fixedly connected to an outer end face of the first claw pole 110 and defines a central hole 1524 through which the rotor shaft 140 passes, the two channels are defined in the first fan body 152, and a plurality of first fan blades 154 respectively extend from the first fan body 152 in an axial direction away from the first claw pole 110 so as to generate an axial airflow for cooling the generator when the rotor 100 rotates.
In some embodiments, as shown in FIG. 3, the first fan body 152 is attached to the outer end of the first claw pole 110 by spot welding. Therefore, the first fan 150 can be firmly connected to the outer end surface of the first claw pole 110.
In some embodiments, as shown in fig. 3, two grooves 1522 are formed by recessing the first fan body 152 away from the outer face of the first claw pole 110. Therefore, the first fan 150 has a simple structure and is easy to produce and manufacture.
In some embodiments, as shown in fig. 3, the two grooves 1522 are symmetrically disposed about the central hole 1524 of the first fan body 152, so that the force applied to the leads 132 of the field windings 130 received in the two grooves 1522 during the rotation process can be uniformly distributed, which is beneficial to reducing the risk of breaking the leads 132 of the field windings 130.
In some embodiments, as shown in fig. 2, each rib 1526 is located at an end of the corresponding groove 1522 proximate to the central bore 1524 of the first fan body 152, thereby facilitating reducing the risk of the leads 132 of the field windings 130 breaking during rotation of the rotor 100. It will be appreciated that each rib 1526 may also be located in the middle of the corresponding recess 1522 or at an end of the corresponding recess 1522 distal from the central aperture 1524 of the first fan body 152.
In some embodiments, as shown in fig. 2 and 3, each rib 1526 is formed by recessing a portion of the corresponding groove 1522 toward the first claw pole 110, whereby the structure of the rib 1526 is simple and easy to manufacture. In some examples, the longitudinal direction of each rib 1526 is perpendicular to the direction of extension of the corresponding groove 1522. It will be appreciated that the longitudinal direction of each rib 1526 may also be parallel or oblique to the direction of extension of the corresponding groove 1522.
In some embodiments, as shown in fig. 2, each groove 1522 is filled with an insulating resin. The cured insulating resin thereby facilitates fixing of the lead wires 132 of the field winding 130 received in the threading channels.
In some embodiments, each groove 1522 has a plurality of ribs 1526, and the plurality of ribs 1526 are distributed at intervals along the corresponding groove 1522, so that the lead wires 132 of the field winding 130 can be pressed on the outer end face of the first claw pole 110 more firmly, which is beneficial to reducing the risk of breaking the lead wires 132 of the field winding 130.
In some embodiments, as shown in fig. 2, the minimum distance between each rib 1526 and the first claw pole 110 is D, the diameter of the lead 132 at both ends of the excitation winding 130 is D, and the value of D is in the range of 1.1D to 0.8D. Accordingly, it can be ensured that the lead wires 132 at both ends of the field winding 130 can be pressed against the outer end surfaces of the first claw poles 110, the risk of breakage of the lead wires 132 at both ends of the field winding 130 due to centrifugal force during rotation of the rotor 100 can be reduced, and it can be ensured that the pressure of the ribs 1526 acting on the lead wires 132 at both ends of the field winding 130 is not excessive, and the risk of breakage of the lead wires 132 at both ends of the field winding 130 due to pressure during rotation of the rotor 100 can be reduced.
In some embodiments, as shown in fig. 2, the surface of each rib 1526 abutting against the leads 132 of the field winding 130 is a plane, so as to increase the contact area between the rib 1526 and the leads 132 at both ends of the field winding 130, which is beneficial for reducing the risk of breakage of the leads 132 at both ends of the field winding 130.
In some embodiments, as shown in fig. 2, a surface of each rib 1526 abutting against the leads 132 of the field winding 130 forms a rounded transition with a side surface of the rib 1526, so as to avoid stress concentration when an edge of the rib 1526 contacts with the leads 132 at two ends of the field winding 130, which is beneficial to reducing the risk of breakage of the leads 132 at two ends of the field winding 130.
In some embodiments, as shown in FIG. 2, the outer end surface of the first claw pole 110 is planar. Therefore, the formation of the groove 1522 in the first claw pole 110 can be avoided, the structure of the first claw pole 110 is simplified, and the production cost of the first claw pole 110 is reduced.
In some embodiments, as shown in fig. 1, the rotor 100 further includes a slip ring 160, the slip ring 160 is fixedly connected to one end of the rotor shaft 140 protruding from the first claw pole 110, and the slip ring 160 has two pins 162, and the leads 132 at two ends of the excitation winding 130 are respectively fixedly connected to the two pins 162 of the slip ring 160 through two threading channels.
In some embodiments, rotor 100 further includes a second fan fixedly coupled axially to an outer end face of second claw pole 120 to facilitate cooling of rotor 100.
In some embodiments, the second fan includes a second fan body and a plurality of second fan blades. A second fan body is fixedly connected to an outer end face of the second claw pole 120 and defines a central hole through which the rotor shaft 140 passes, and a plurality of second fan blades respectively extend from the second fan body in an axial direction away from the second claw pole 120 so as to generate an axial airflow for cooling the generator when the rotor 100 rotates.
A rotor 100 for a generator according to one embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a rotor 100 according to a specific embodiment of the present disclosure includes a first claw pole 110, a second claw pole 120, a field winding 130, a rotor shaft 140, a first fan 150, a second fan (not shown), and a slip ring 160.
The first and second claw poles 110 and 120 cooperate with each other to form a receiving space in which the field winding 130 is received. The rotor shaft 140 passes through the centers of the first and second claw poles 110 and 120 and the field winding 130, and the first and second claw poles 110 and 120 and the field winding 130 are fixedly connected to the rotor shaft 140 so that the first and second claw poles 110 and 120, the field winding 130 and the rotor shaft 140 can rotate together.
As shown in fig. 2 and 3, a first fan 150 is fixedly coupled to an outer end surface of the first claw pole 110 in an axial direction, and a second fan is fixedly coupled to an outer end surface of the second claw pole 120 in the axial direction. The first fan 150 includes a first fan body 152 and a plurality of first blades 154. The first fan body 152 is fixedly coupled to an outer end surface of the first claw pole 110 by spot welding and defines a center hole 1524 through which the rotor shaft 140 passes. A plurality of first fan blades 154 extend axially away from the first claw pole 110 from the first fan body 152, respectively, to generate an axial airflow for cooling the generator as the rotor rotates. Similarly, the second fan includes a second fan body and a plurality of second fan blades. The second fan body is fixedly coupled to an outer end surface of the second claw pole 120 by spot welding and defines a center hole through which the rotor shaft 140 passes. A plurality of second fan blades extend axially away from the second claw pole 120 from the second fan body, respectively, to generate an axial airflow for cooling the generator when the rotor 100 rotates.
As shown in fig. 2 and 3, the first fan body 152 defines two grooves 1522 extending in the radial direction, the two grooves 1522 being symmetrically disposed about the central hole 1524 of the first fan body 152. The two grooves 1522 are formed by recessing the first fan body 152 away from the outer end face of the first claw pole 110, and the outer end face of the first claw pole 110 is a flat surface, so that the two grooves 1522 respectively define threading passages together with the outer end face of the first claw pole 110. A slip ring 160 is fixedly attached to the end of the rotor shaft 140 that extends beyond the first claw pole 110, and the slip ring 160 has two legs 162. The leads 132 at both ends of the field winding 130 are connected to the two pins 162 of the slip ring 160 through two threading passages from the outer peripheral side of the first claw pole 110, respectively.
As shown in fig. 2 and 3, a rib 1526 protruding toward the outer end surface of the first claw pole 110 is formed in each groove 1522 of the first fan, the leads 132 of the field winding 130 are each sheathed with an insulating protective sleeve 134, and each rib 1526 is used for abutting against the insulating protective sleeve 134 of the corresponding lead 132 of the field winding 130, so as to press the corresponding lead 132 of the field winding 130 against the outer end surface of the first claw pole 110. Each rib 1526 is formed by recessing a portion of the corresponding groove 1522 toward the first claw pole 110, for example, each rib 1526 is formed by stamping a portion of the bottom of the groove 1522. The longitudinal direction of each rib 1526 is perpendicular to the extending direction of the groove 1522 and is located at one end of the corresponding groove 1522 near the center hole 1524 of the first fan body 152, so that the lead wires 132 of the field winding 130 can be pressed against the outer end face of the first claw pole 110 more stably. Each groove 1522 is also filled with an insulating resin, and the cured insulating resin helps to fix the lead wires 132 of the field winding 130.
According to the rotor 100 of the embodiment of the present disclosure, by forming the rib 1526 in the groove 1522 of the first fan body 152, the lead wire 132 of the field winding 130 can be pressed against the outer end surface of the first claw pole 110, so that the centrifugal force to which the lead wire 132 of the field winding 130 is subjected during the rotation of the generator rotor 100 is offset, thereby reducing the risk of the lead wire 132 of the field winding 130 breaking and improving the reliability of the generator.
The generator according to the disclosed embodiment comprises a stator fixedly connected between a front end cover and a rear end cover, a rotor 100 according to the above described embodiment, the rotor being received within the stator and rotatably connected to the front end cover and the rear end cover.
Other configurations and operations of the generator are known to those skilled in the art and therefore will not be described in detail herein.
According to the generator of the embodiment of the present disclosure, by employing the rotor 100 according to the above-described embodiment, the reliability of the generator can be improved.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the present disclosure, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims (11)

1. A rotor for a generator, comprising:
a first claw pole and a second claw pole which are mutually matched to form a containing space;
an excitation winding accommodated in the accommodation space;
a rotor shaft passing through the first claw pole, the second claw pole and the excitation winding and fixedly connected with the first claw pole, the second claw pole and the excitation winding; and
a first fan fixedly connected to an outer end surface of the first claw pole in an axial direction, the first fan defining two grooves extending in a radial direction, the two grooves respectively defining threading passages together with the outer end surface of the first claw pole, the lead wires at both ends of the excitation winding being capable of passing through and being received in the two threading passages, respectively,
wherein ribs protruding toward the outer end face of the first claw pole are respectively provided in the two grooves, each rib for abutting against a corresponding lead of the excitation winding to press the corresponding lead of the excitation winding against the outer end face of the first claw pole.
2. A rotor for a generator as claimed in claim 1, wherein the leads of the field winding are each sheathed with an insulating protective sheath, each rib for abutting against the insulating protective sheath of a corresponding lead of the field winding.
3. The rotor for a generator of claim 1 or 2, wherein the first fan comprises a first fan body fixedly connected to an outer end face of the first claw pole and defining a central hole for the rotor shaft to pass through, and a plurality of first fan blades defined in the first fan body, and the two passages are defined in the first fan body, and the plurality of first fan blades extend axially away from the first claw pole from the first fan body, respectively.
4. The rotor for a generator of claim 3, wherein the two grooves are formed by recessing the first fan body away from an outer end face of the first claw pole.
5. The rotor for a generator of claim 3, wherein the two grooves are symmetrically disposed about the central bore of the first fan body.
6. A rotor for an electrical generator as claimed in claim 3, wherein each rib is located at an end of the corresponding groove proximate the central bore of the first fan body.
7. The rotor for a generator of claim 1 or 2, wherein each rib is formed by recessing a portion of the corresponding groove toward an outer end face of the first claw pole.
8. The rotor for a generator as claimed in claim 1 or 2, wherein each groove is filled with an insulating resin.
9. A rotor for a generator as claimed in claim 1 or 2, wherein the outer end face of the first claw pole is planar.
10. The rotor for a generator of claim 1 or 2, further comprising a slip ring fixedly connected to an end of the rotor shaft protruding the first claw pole, and the slip ring has two pins, and the leads at both ends of the excitation winding are fixedly connected to the two pins of the slip ring through the two threading passages, respectively.
11. An electrical generator, comprising:
a stator;
a rotor for a generator as claimed in claims 1-10; and
a front end cap and a rear end cap, wherein the stator is fixedly coupled between the front end cap and the rear end cap, and the rotor is received within the stator and rotatably coupled to the front end cap and the rear end cap.
CN201910857615.9A 2019-09-09 2019-09-09 Rotor for generator and generator with same Pending CN112467900A (en)

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Application Number Priority Date Filing Date Title
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DE102017220790A1 (en) * 2017-11-21 2019-05-23 Robert Bosch Gmbh Electric machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603825A (en) * 1970-05-21 1971-09-07 Gen Motors Corp Winding spool and lead support insulator for rotors of alternating current generators
JPH08205496A (en) * 1995-01-26 1996-08-09 Hitachi Ltd Rotor of ac generator for vehicle
JPH10174367A (en) * 1996-12-16 1998-06-26 Denso Corp Rotor of dynamo-electric machine
US20040017128A1 (en) * 2002-07-25 2004-01-29 Visteon Global Technologies, Inc. Alternator field coil wire routing design
US20070267935A1 (en) * 2006-05-16 2007-11-22 York Michael T Alternator rotor coil wire routing
CN101355274A (en) * 2007-07-27 2009-01-28 韩国德尔福汽车系统公司 Connection structure and method of connecting field coil and lead wires in vehicle alternator
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