CN113452208A - Power supply member and motor assembly - Google Patents

Power supply member and motor assembly Download PDF

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Publication number
CN113452208A
CN113452208A CN202010228883.7A CN202010228883A CN113452208A CN 113452208 A CN113452208 A CN 113452208A CN 202010228883 A CN202010228883 A CN 202010228883A CN 113452208 A CN113452208 A CN 113452208A
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CN
China
Prior art keywords
bus bar
axial direction
plate portion
connector
axial
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
CN202010228883.7A
Other languages
Chinese (zh)
Inventor
宋巍巍
翟林
呼婧
张伟
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Nidec Dalian Ltd
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Nidec Dalian Ltd
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 Nidec Dalian Ltd filed Critical Nidec Dalian Ltd
Priority to CN202010228883.7A priority Critical patent/CN113452208A/en
Publication of CN113452208A publication Critical patent/CN113452208A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02—Single bars, rods, wires, or strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/161—Details
    • H01R25/162—Electrical connections between or with rails or bus-bars
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • H02K11/026—Suppressors associated with brushes, brush holders or their supports
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Abstract

The embodiment of the application provides a power supply part and motor assembly, and the power supply part has: a brush disk portion, a connector portion, and a bus bar having: a flat plate portion arranged at the brush disc portion, one end of the flat plate portion being connected to the noise reduction element, a minimum dimension of the flat plate portion in the axial direction being smaller than a minimum dimension perpendicular to the axial direction; and a vertical plate portion that is connected to the flat plate portion and extends outward in the radial direction of the brush disk portion, at least a part of the vertical plate portion being disposed on the connector portion, a minimum dimension of the vertical plate portion perpendicular to the axial direction being smaller than a minimum dimension in the axial direction, and a direction of the minimum dimension of the vertical plate portion disposed on the connector portion perpendicular to a direction in which the connector portion protrudes from the brush disk portion.

Description

Power supply member and motor assembly
Technical Field
The present application relates to the field of electromechanics, and more particularly, to a power supply component and a motor assembly.
Background
Conventionally, a brush motor has been widely used as a drive source for a window device, a sunroof device, or the like provided in a vehicle. The brush motor is provided with a pair of brushes and a noise preventing element, so that electromagnetic noise and the like generated from a sliding connection part of the brush and the commutator when the brush is electrified can be suppressed by the noise preventing element.
The noise preventing element may be, for example, a choke coil, one end of which is connected to the brush and the other end of which is connected to the bus bar. Wherein the bus bar can supply power to the brushed motor from an external power source.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.
Disclosure of Invention
The inventors of the present application have found that the existing bus bar has some structural limitations, such as: in some cases, the bus bars have a flat plate shape on the side connected to the external power source, and therefore, the bus bars have a large size in the lateral direction parallel to the surface of the brush tray, and in particular, when a plurality of bus bars are provided in the lateral direction, it is difficult to achieve miniaturization of the motor; further, if the bus bar is entirely in the form of a standing plate, a problem of poor connection occurs when the standing plate-shaped bus bar is electrically connected to another member.
In order to solve at least one of the above-described problems or other similar problems, embodiments of the present application provide a power supply member in which a portion of a bus bar extending to a radially outer side of a brush tray is a standing plate portion, whereby a lateral dimension of the bus bar is reduced at the radially outer side of the brush tray, facilitating miniaturization of a motor assembly, and a motor assembly.
According to an aspect of the embodiments of the present application, there is provided a power supply member disposed between a motor case having a cylindrical shape and accommodating a motor having a rotation shaft and a gear box accommodating a gear and the rotation shaft,
the power supply member includes:
a brush disk portion that houses a brush that supplies power to the motor and a noise reduction element connected to the brush, the brush disk portion being embedded in the motor case;
a connector portion protruding radially outward from the brush holder portion; and
a bus bar connected between the brush tray portion and an external power source,
the bus bar has:
a flat plate portion disposed at the brush disc portion, one end portion of the flat plate portion being connected to the noise reduction element, a minimum dimension of the flat plate portion in an axial direction being smaller than a minimum dimension perpendicular to the axial direction;
and a riser portion that is connected to the flat plate portion and extends outward in the radial direction of the brush disk portion, at least a part of the riser portion being disposed in the connector portion, a minimum dimension of the riser portion perpendicular to the axial direction being smaller than a minimum dimension in the axial direction, and a direction of the minimum dimension of the riser portion disposed in the connector portion perpendicular to the axial direction being perpendicular to a direction in which the connector portion protrudes from the brush disk portion.
According to another aspect of the embodiments of the present application, wherein the bus bar further has:
a 1 st connecting portion extending from the flat plate portion in an axial direction; and
a 2 nd connecting portion extending from the 1 st connecting portion to an outer side of the brush disk portion,
a minimum dimension perpendicular to the axial direction of at least one of the 1 st connector portion and the 2 nd connector portion is smaller than a minimum dimension in the axial direction.
According to another aspect of the embodiments of the present application, wherein the flat plate portion has a 1 st axial through portion,
one end of the noise reduction element on one axial side is housed in the 1 st axial through portion and connected to the flat plate portion.
According to another aspect of the embodiments of the present application, wherein the bus bar further has:
a 1 st bent portion bent in the axial direction from one end of the flat plate portion,
the 1 st bent portion has a 2 nd axial through portion, the 2 nd axial through portion and the 1 st axial through portion are at least partially overlapped in the axial direction and communicate with the 1 st axial through portion,
the one end portion on the noise reduction element side is accommodated in the 1 st axial through portion and the 2 nd axial through portion, and is connected to at least one of the flat plate portion and the 1 st bent portion.
According to another aspect of the embodiments of the present application, wherein the connector portion has:
a connector body;
a first groove portion formed in the connector body, the first groove portion accommodating the at least a part of the upright plate portion; and
a cover portion that covers the at least a portion of the upright plate portion housed in the first groove portion.
According to another aspect of the embodiments of the present application, wherein the connector portion has:
a connector body that covers the at least a portion of the floor portion in an insert molding manner.
According to another aspect of the embodiments of the present application, wherein the power supply member further has:
a sensor bus bar connected to a circuit board arranged parallel to an axial direction,
the bus bars are two, the sensor bus bar is arranged between the two bus bars,
the sensor bus bar has a sensor 1 st bus bar rising plate portion, a minimum dimension of the sensor 1 st bus bar rising plate portion in an axial direction is larger than a minimum dimension perpendicular to the axial direction,
the sensor 1 st bus bar riser portion is received in the second groove of the connector portion.
According to another aspect of the embodiments of the present application, wherein the sensor bus bar further has a sensor 1 bus bar rising plate portion having a smaller dimension in an axial direction than the sensor 2 bus bar rising plate portion, the sensor 2 bus bar rising plate portion is connected to the sensor 1 bus bar rising plate portion,
the circuit board has a slit portion formed by being depressed in an axial direction,
at least a part of the sensor 2 nd bus bar rising plate portion is accommodated in the slit portion.
According to another aspect of the embodiments of the present application, wherein the flat plate portion has a recessed portion recessed in a direction perpendicular to the axial direction.
According to another aspect of an embodiment of the present application, wherein the brush disk portion has a plate portion expanding in a radial direction and a wall portion extending in an axial direction from the plate portion,
a protruding portion protruding toward the flat plate portion in an axial direction is provided on a surface of the plate portion facing the flat plate portion,
a gap is provided between a surface of the protruding portion facing the flat plate portion and a surface of the flat plate portion facing the protruding portion.
According to another aspect of the embodiments of the present application, there is provided a motor assembly having the power supply member according to any one of the above embodiments, wherein the gear case has an extension portion that protrudes from a radially outer side of the brush disk portion in an axial direction toward a motor case, the extension portion has a through hole, and the connection portion of the power supply member has:
a portion between the motor housing and the extension portion, and a portion on a side of the extension portion away from the gear case in an axial direction.
According to another aspect of the embodiments of the present application, wherein the connector portion is formed with:
a 1 st connector portion that protrudes radially outward from the brush holder portion and is located between the brush holder portion and the extension portion;
a 2 nd connector portion extending axially away from the gear case from a radially outer end of the 1 st connector portion; and
a 3 rd connector portion extending from an axial end portion of the 2 nd connector portion radially outward to a side of the extension portion axially away from the gear case.
One of the beneficial effects of the embodiment of the application lies in: in the power supply member of the embodiment of the present application, the portion of the bus bar extending to the outside in the radial direction of the brush tray is the vertical plate portion, and therefore, the lateral dimension of the bus bar is reduced on the outside in the radial direction of the brush tray, which is advantageous for downsizing the motor assembly; moreover, the flat plate part is connected with the noise reduction element, so that the connection reliability is improved.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the present application include many variations, modifications, and equivalents within the scope of the terms of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
Elements and features described in one drawing or one implementation of an embodiment of the application may be combined with elements and features shown in one or more other drawings or implementations. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views, and may be used to designate corresponding parts for use in more than one embodiment.
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a motor assembly having power supply components of an embodiment of the present application;
FIG. 2 is a schematic perspective view of a motor body on which a power supply member according to an embodiment of the present invention is mounted;
FIG. 3 is a schematic perspective view of a bus bar according to an embodiment of the present application;
FIG. 4 is a schematic view of a cover portion of an embodiment of the present application;
FIG. 5 is a partial schematic view of a sensor bus bar and circuit board of an embodiment of the present application;
FIG. 6 is a partial plan view of a power supply member of an embodiment of the present application;
fig. 7 is a schematic sectional view in the axial direction as viewed in the direction a-a of fig. 6.
Detailed Description
The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims. Various embodiments of the present application will be described below with reference to the drawings. These embodiments are merely exemplary and are not intended to limit the present application.
In the embodiments of the present application, the terms "first", "second", "upper", "lower", and the like are used to distinguish different elements by name, but do not indicate a spatial arrangement, a temporal order, and the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.
In the embodiments of the present application, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.
In the following description of the embodiments of the present application, for the sake of convenience of description, a radial direction around a rotation axis of a motor is referred to as a "radial direction"; the direction around the rotation axis of the motor will be referred to as "circumferential"; a direction along or parallel to the rotation axis of the motor is referred to as an "axial direction"; in the axial direction, the direction in which the rotating shaft of the motor extends from the motor housing toward the gear box is an "up" direction, and the direction opposite to the "up" direction is a "down" direction; a side away from the rotation axis of the motor in the radial direction is referred to as "radially outer side", and a side close to the rotation axis of the motor in the radial direction is referred to as "radially inner side"; the direction perpendicular to the axial direction is "transverse".
Embodiments of the first aspect
Embodiments of the first aspect of the present application provide a power supply component, and fig. 1 is a schematic diagram of a motor assembly having the power supply component.
As shown in fig. 1, the motor assembly 100 includes: a power supply part 1, a motor housing 2 and a gear box 3. Wherein the power supply member 1 is disposed between the motor housing 2 and the gear case 3. The motor housing 2 is cylindrical and houses a motor (not shown) having a rotating shaft. The gear case 3 accommodates a gear (not shown) and the rotating shaft of the motor.
Fig. 2 is a perspective view schematically showing the motor main body on which the power supply member is mounted. As shown in fig. 2, the power supply member 1 includes: brush disk segment 11, connector segment 12, and bus bar 13.
Brush disk portion 11 accommodates brush 111 for supplying power to the motor and noise reduction element 112 connected to brush 111, brush disk portion 11 being embedded in motor case 2, wherein noise reduction element 112 is, for example, a choke coil. Connector portion 12 protrudes radially outward from brush disk portion 11. Bus bar 13 is connected between brush disk portion 11 and an external power source (not shown).
As shown in fig. 2, the bus bar 13 has: a flat plate portion 131 and a vertical plate portion 132.
The flat plate portion 131 is disposed in the brush-holder disk portion 11, one end portion of the flat plate portion 131 is connected to the noise reduction element 112, and a minimum dimension of the flat plate portion 131 in the axial direction X1 is smaller than a minimum dimension perpendicular to the axial direction, that is, an extension surface of the flat plate portion 131 is perpendicular to the axial direction X1.
Upright plate portion 132 is connected to flat plate portion 131 and extends radially outward of brush disk portion 11. At least a part of upright plate 132 is disposed on connector portion 12. The minimum dimension of upright plate portion 132 perpendicular to the axial direction is smaller than the minimum dimension in the axial direction, and a minimum dimension direction X2 perpendicular to the axial direction of upright plate portion 132 disposed on connector portion 12 is perpendicular to a protruding direction X3 of connector portion 12 with respect to brush disc portion 11, that is, an extension plane of upright plate portion 132 disposed on connector portion 12 is parallel to both axial direction X1 and protruding direction X3 of connector 12.
According to the embodiment of the first aspect of the present application, in the power supply member, the portion of the bus bar extending to the outside in the radial direction of the brush disk portion is the upright plate portion, whereby the lateral dimension of the bus bar is reduced on the outside in the radial direction of the brush disk portion, the lateral dimension of the connector portion can be reduced, and the miniaturization of the motor assembly is facilitated; moreover, the flat plate part is connected with the noise reduction element, so that the connection reliability is improved.
Fig. 3 is a perspective view of the bus bar 13. As shown in fig. 3, the bus bar 13 includes a 1 st connecting portion 133 and a 2 nd connecting portion 134 in addition to the flat plate portion 131 and the upright plate portion 132.
The 1 st connecting portion 133 extends from the flat plate portion 131 in the axial direction, for example, the 1 st connecting portion 133 extends upward or downward in the axial direction, and when the 1 st connecting portion 133 extends upward in the axial direction, the 1 st connecting portion 133 can be prevented from interfering with the bearing holder above the flat plate portion 131, so that the reliability of the motor assembly can be improved.
The 2 nd connecting portion 134 extends radially outward of the brush disk portion (not shown in fig. 3) from the 1 st connecting portion 133. At least one of the 1 st connecting portion 133 and the 2 nd connecting portion 134 has a minimum dimension perpendicular to the axial direction smaller than a minimum dimension in the axial direction.
As shown in fig. 2 and 3, flat plate portion 131 may have 1 st axial through portion 1311, and 1 st axial through portion 1311 may be a cutout portion, for example. One end 112a of the noise reduction element 112 on one axial side is housed in the 1 st axial through portion 1311 and connected to the flat plate portion 131. By providing the 1 st axial through portion 1311, the flat plate portion 131 can be connected to the noise reduction element 112 in a simple manner.
As shown in fig. 2 and 3, the bus bar 13 also has a 1 st bent portion 135. The 1 st bent portion is bent in the axial direction from one end of the flat plate portion 131. The 1 st bent portion 135 has a 2 nd axial through portion 1351, and the 2 nd axial through portion 1351 may be a notch portion, for example. The 2 nd axial through portion 1351 and the 1 st axial through portion 1311 overlap at least partially in the axial direction, and the 2 nd axial through portion 1351 communicates with the 1 st axial through portion 1311. The end 112a of the noise reduction element 112 may be received in the 1 st axial through portion 1311 and the 2 nd axial through portion 1351, and connected to at least one of the flat plate portion 131 and the 1 st bent portion 135. By providing the 1 st bent portion 135 and the 2 nd axial through portion 1351, the reliability of the noise reducing element and the bus bar connecting portion can be improved, and the strength of the bus bar on the noise reducing element side can be improved.
For example, the 1 st axial through portion 1311 and/or the 2 nd axial through portion 1351 may have a smaller transverse dimension than the diameter of the end portion 112a of the noise reduction element 112, whereby the end portion 112a of the noise reduction element 112 may be pressed into the 1 st axial through portion 1311 and/or the 2 nd axial through portion 1351, thereby connecting the noise reduction element 112 and the bus bar 13; for another example, the 1 st axial through portion 1311 and/or the 2 nd axial through portion 1351 may have a lateral dimension larger than the diameter of the end portion 112a of the noise reducing element 112, and when the end portion 112a of the noise reducing element 112 is disposed in the 1 st axial through portion 1311 and/or the 2 nd axial through portion 1351, both sides of the 1 st axial through portion 1311 and/or the 2 nd axial through portion 1351 are deformed so as to sandwich the end portion 112a of the noise reducing element 112, thereby connecting the noise reducing element 112 and the bus bar 13, and furthermore, the end portion 112a of the noise reducing element 112 and the contact portions on both sides of the 1 st axial through portion 1311 and/or the 2 nd axial through portion 1351 may be welded, thereby further improving the reliability of the connection portion.
As shown in fig. 2, connector portion 12 may include: a connector body 121, a first groove 122, and a cover 123. The first groove 122 is formed in the connector body 121. The first groove portion 122 receives at least a part of the upright plate portion 132 of the bus bar 13, for example, the at least a part of the upright plate portion 132 may be pressed or inserted into the first groove 122. The lid 123 covers the at least a part of the upright plate 132 housed in the first groove 122.
Fig. 4 is a schematic view of the cover 123, and as shown in fig. 4, the cover 123 may be formed with ribs 1232, and the ribs 1232 may improve the strength of the cover 123. The cover 123 may further have a latch 1233, and the latch 1233 may be engaged with a hook 1211 (see fig. 2) on the connector body 121, so as to connect the cover 123 to the connector body 121. In addition, the cover 123 may not have the snap 1233, but may be fixed to the connector body 121 by press-fitting or heat-welding. The surface of the lid 123 facing the upright plate portion 132 of the bus bar 13 further includes a bus bar abutment rib 1234 that abuts against the upright plate portion 132, and the upright plate portion 132 can be reliably pressed against the first groove portion 122 by the bus bar abutment rib 1234.
Further, in other embodiments, the connector portion 12 may have only the connector body 121 without the cover portion 123, the connector body 121 covering at least a portion of the riser portion 132, for example, in an insert molding manner, so that the at least a portion of the riser portion 132 is provided in the connector portion 12.
In the present application, the connector portion 12 may be made of an insulating material, for example, resin.
As shown in fig. 2, the power supply member 1 further includes: a sensor bus bar 14. The sensor bus bar 14 is connected to a circuit board 15, which is arranged with its extension plane parallel to the axial direction, for example, the sensor bus bar 14 is electrically connected to a sensor provided on the circuit board 15.
As shown in fig. 2, the number of the bus bars 13 is two, and the two bus bars 13 are arranged apart in the X2 direction. The sensor bus bar 14 is arranged between the two bus bars 13.
Fig. 5 is a partial schematic view of the sensor bus bar 14 and the circuit board 15. As shown in fig. 5, the sensor bus bar 14 has a sensor 1 st bus bar standing plate portion 141, the minimum dimension of the sensor 1 st bus bar standing plate portion 141 in the axial direction is larger than the minimum dimension perpendicular to the axial direction (i.e., the X2 direction), and the minimum dimension direction (i.e., the X2 direction) of the sensor 1 st bus bar standing plate portion 141 disposed in the connector portion 12 perpendicular to the axial direction is perpendicular to the protruding direction (i.e., the X3 direction) of the connector portion 12 with respect to the brush holder portion 11 (not shown in fig. 5). At least a portion of the sensor 1 st bus bar riser portion 141 may be received in a second groove (not shown) of the connector portion 12. Since the sensor 1 st bus bar standing plate portion 141 is small in size in the X2 direction, the width of the connector portion 12 is suppressed.
As shown in fig. 5, the sensor bus bar 14 further has a sensor 2 nd bus bar rising plate portion 142, and the sensor 2 nd bus bar rising plate portion 142 is connected to the sensor 1 st bus bar rising plate portion 141. The sensor 2 nd bus bar standing plate portion 142 is smaller in axial dimension than the sensor 1 st bus bar standing plate portion 141.
As shown in fig. 5, the circuit board 15 has a slit portion 151 formed by being recessed in the axial direction, and at least a part of the sensor No. 2 bus bar upright plate portion 142 is accommodated in the slit portion 151. Thereby, the slit portion 151 can support the sensor bus bar 14 in the axial direction, and can define the position of the sensor bus bar 14 in the X2 direction.
Fig. 6 is a partial plan view of the power supply member 1. As shown in fig. 6, the flat plate portion 131 of the bus bar 13 has a recessed portion 1312 recessed in a direction perpendicular to the axial direction, that is, the recessed portion 1312 is recessed in the X2 direction. The recess 1312 allows the flat plate portion 131 to be kept at an appropriate distance from the rotation shaft of the motor and other components of the motor disposed on the rotation shaft in the X2 direction, thereby improving the reliability of the motor operation. Further, the formation position of the depression 1312 may be determined by: in the case where the recess 1312 is not formed in the flat plate portion 131, the position where the flat plate portion 131 is closest to the rotation axis of the motor in the X2 direction is determined, and the recess 1312 is formed at this position.
Fig. 7 is a schematic cross-sectional view in the axial direction when one power supply member 1 is disposed in the motor main body portion as viewed in the a-a direction of fig. 6. As shown in fig. 6 and 7, brush disk portion 11 has plate portion 113 extending in the radial direction and wall portion 114 extending in the axial direction from plate portion 113. One surface of the plate portion 113 facing the flat plate portion 131 has a protruding portion 115 protruding toward the flat plate portion 131 in the axial direction. As shown in fig. 7, a gap 116 is formed between a surface of the protruding portion 115 facing the flat plate portion 131 and a surface of the flat plate portion 131 facing the protruding portion. Accordingly, the protruding portion 115 and the flat plate portion 131 are opposed to each other through the gap 116, a space can be provided for the axial movement of the flat plate portion 131, and the protruding portion 115 restricts the maximum position of the flat plate portion 131 moving downward in the axial direction, thereby preventing the flat plate portion 131 from being largely deformed and damaged in the process of assembling the power supply member 1 or using the power supply member 1.
In the present application, brush disk portion 11 and connector portion 12 may be formed by integrally molding a resin material. Further, brush disk portion 11 and connector portion 12 may be formed separately.
In the present application, the bus bar 13 may be integrally formed, and thus, the process of manufacturing the bus bar 13 is simple, and it is not necessary to assemble a plurality of components.
According to the embodiment of the first aspect of the present application, in the power supply member, the portion of the bus bar extending to the outside in the radial direction of the brush disk portion is the upright plate portion, whereby the lateral dimension of the bus bar is reduced on the outside in the radial direction of the brush disk portion, the lateral dimension of the connector portion can be reduced, and the miniaturization of the motor assembly is facilitated; moreover, the flat plate part is connected with the noise reduction element, so that the connection reliability is improved.
Embodiments of the second aspect
Embodiments of the second aspect of the present application provide a motor assembly having the power supply member described in embodiments of the first aspect. Since in the embodiment of the first aspect, the power supply part has already been described in detail, the contents thereof are incorporated herein, and the description thereof is omitted here.
As shown in fig. 1, the motor assembly 100 includes: a power supply part 1, a motor housing 2 and a gear box 3.
As shown in fig. 1, the gear case 3 has an extension portion 31, and the extension portion 31 protrudes from the radially outer side of the brush disk portion 11 toward the motor housing 2 in the axial direction, that is, the extension portion 31 is located on the radially outer side of the brush disk portion 11 and protrudes from the main body portion 30 of the gear case 3 toward the lower side in the axial direction.
As shown in fig. 1, the connector portion 12 of the power supply member 1 includes: a portion between the motor case 2 and the extension 31, and a portion located on a side of the extension 31 away from the gear case 3 in the axial direction (i.e., located on an axially lower side of the extension 31). Accordingly, the extension 31 of the gear case 3 can be provided by making full use of the space between the main body 30 of the gear case 3 and the connector portion 12, so that the effective utilization rate of the gear case 3 is increased, and the motor module 100 can be miniaturized without enlarging the other portion of the gear case 3 outward.
For example, as shown in fig. 1, connector portion 12 may be formed with: a 1 st connector portion 1201 which protrudes radially outward from the brush disk portion 11 and is positioned between the brush disk portion 11 and the extension portion 31; a 2 nd connector portion 1202 extending from a radially outer end of the 1 st connector portion 1201 in a direction away from the gear case 3 in the axial direction (i.e., in the axial downward direction); a 3 rd connector portion 1203 that extends from an axial end of the 2 nd connector portion 1202 radially outward to a side of the extension portion 31 that is axially away from the gear case 3, that is, the 3 rd connector portion 1203 is located axially below the extension portion 31. Further, the connector portion 12 may be formed with a 4 th connector portion 1204 that extends from the side of the 3 rd connector portion 1203 toward the motor housing in the axial direction toward the direction away from the gear case 3.
In fig. 1, the 1 st connector portion 1201 and the 2 nd connector portion 1202 are portions of the connector portion 12 between the motor case 2 and the extension portion 31, and the 3 rd connector portion 1203 and the 4 th connector portion 1204 are portions of the connector portion 12 on the axially lower side of the extension portion 31.
As shown in fig. 1, a through hole 311 is formed in the extension portion 31, and the through hole 311 is located radially outward of the 1 st connector portion 1201 and axially upward of the 3 rd connector portion 1203. The through hole 311 may accommodate a mounting member that can mount the motor assembly 100 to another device, thereby increasing the effective utilization of the gear box 3, i.e., the motor assembly 100 can be mounted to another device without enlarging the other portion of the gear box 3 toward the outside.
In the embodiments of the second aspect of the present application, the field in which the motor assembly can be used is not limited, and for example, the motor assembly may be used in a sunroof drive system of an automobile, or in other fields.
According to the embodiment of the second aspect of the present application, in the power supply member of the motor assembly, the portion of the bus bar extending to the outside in the radial direction of the brush disc portion is the upright plate portion, whereby the lateral dimension of the bus bar is reduced on the outside in the radial direction of the brush disc portion, the lateral dimension of the connector portion can be reduced, and the miniaturization of the motor assembly is facilitated; in addition, the flat plate part is connected with the noise reduction element, so that the reliability of the electric connection of the motor is improved.
The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the spirit and principles of the application and are within the scope of the application.

Claims (12)

1. A power supply member disposed between a motor case having a cylindrical shape and accommodating a motor having a rotating shaft and a gear case accommodating a gear and the rotating shaft,
the power supply member includes:
a brush disk portion that houses a brush that supplies power to the motor and a noise reduction element connected to the brush, the brush disk portion being embedded in the motor case;
a connector portion protruding radially outward from the brush holder portion; and
a bus bar connected between the brush tray portion and an external power source,
characterized in that the bus bar has:
a flat plate portion disposed at the brush disc portion, one end portion of the flat plate portion being connected to the noise reduction element, a minimum dimension of the flat plate portion in an axial direction being smaller than a minimum dimension perpendicular to the axial direction;
and a riser portion that is connected to the flat plate portion and extends outward in the radial direction of the brush disk portion, at least a part of the riser portion being disposed in the connector portion, a minimum dimension of the riser portion perpendicular to the axial direction being smaller than a minimum dimension in the axial direction, and a direction of the minimum dimension of the riser portion disposed in the connector portion perpendicular to the axial direction being perpendicular to a direction in which the connector portion protrudes from the brush disk portion.
2. The power supply part according to claim 1, wherein the bus bar further has:
a 1 st connecting portion extending from the flat plate portion in an axial direction; and
a 2 nd connecting portion extending from the 1 st connecting portion to an outer side of the brush disk portion,
a minimum dimension perpendicular to the axial direction of at least one of the 1 st connector portion and the 2 nd connector portion is smaller than a minimum dimension in the axial direction.
3. The power supplying part according to claim 1,
the flat plate part is provided with a 1 st axial through part,
one end of the noise reduction element on one axial side is housed in the 1 st axial through portion and connected to the flat plate portion.
4. The power supply part according to claim 3, wherein the bus bar further has:
a 1 st bent portion bent in the axial direction from one end of the flat plate portion,
the 1 st bent portion has a 2 nd axial through portion, the 2 nd axial through portion and the 1 st axial through portion are at least partially overlapped in the axial direction and communicate with the 1 st axial through portion,
the one end portion on the noise reduction element side is accommodated in the 1 st axial through portion and the 2 nd axial through portion, and is connected to at least one of the flat plate portion and the 1 st bent portion.
5. The power supplying part according to claim 1,
the connector portion has:
a connector body;
a first groove portion formed in the connector body, the first groove portion accommodating the at least a part of the upright plate portion; and
a cover portion that covers the at least a portion of the upright plate portion housed in the first groove portion.
6. The power supplying part according to claim 1,
the connector portion has:
a connector body that covers the at least a portion of the floor portion in an insert molding manner.
7. The power supplying part according to claim 1,
the power supply member further includes:
a sensor bus bar connected to a circuit board arranged parallel to an axial direction,
the bus bars are two, the sensor bus bar is arranged between the two bus bars,
the sensor bus bar has a sensor 1 st bus bar rising plate portion, a minimum dimension of the sensor 1 st bus bar rising plate portion in an axial direction is larger than a minimum dimension perpendicular to the axial direction,
the sensor 1 st bus bar riser portion is received in the second groove of the connector portion.
8. The power supplying part according to claim 7,
the sensor bus bar further has a sensor 2 nd bus bar rising plate portion that is smaller in axial dimension than the sensor 1 st bus bar rising plate portion, the sensor 2 nd bus bar rising plate portion being connected to the sensor 1 st bus bar rising plate portion,
the circuit board has a slit portion formed by being depressed in an axial direction,
at least a part of the sensor 2 nd bus bar rising plate portion is accommodated in the slit portion.
9. The power supplying part according to claim 1,
the flat plate portion has a recessed portion recessed in a direction perpendicular to the axial direction.
10. The power supplying part according to claim 1,
the brush disk portion has a plate portion extending in a radial direction and a wall portion extending in an axial direction from the plate portion,
a protruding portion protruding toward the flat plate portion in an axial direction is provided on a surface of the plate portion facing the flat plate portion,
a gap is provided between a surface of the protruding portion facing the flat plate portion and a surface of the flat plate portion facing the protruding portion.
11. A motor assembly, characterized in that the motor assembly has a power supply member according to any one of claims 1 to 10,
the gear case has an extension portion axially protruding from a radially outer side of the brush disk portion toward the motor case, the extension portion having a through hole,
the connection portion of the power supply member has:
a portion between the motor housing and the extension portion, and a portion on a side of the extension portion away from the gear case in an axial direction.
12. The motor assembly of claim 11,
the connector portion is formed with:
a 1 st connector portion that protrudes radially outward from the brush holder portion and is located between the brush holder portion and the extension portion;
a 2 nd connector portion extending axially away from the gear case from a radially outer end of the 1 st connector portion; and
a 3 rd connector portion extending from an axial end portion of the 2 nd connector portion radially outward to a side of the extension portion axially away from the gear case.
CN202010228883.7A 2020-03-27 2020-03-27 Power supply member and motor assembly Pending CN113452208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010228883.7A CN113452208A (en) 2020-03-27 2020-03-27 Power supply member and motor assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010228883.7A CN113452208A (en) 2020-03-27 2020-03-27 Power supply member and motor assembly

Publications (1)

Publication Number Publication Date
CN113452208A true CN113452208A (en) 2021-09-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010228883.7A Pending CN113452208A (en) 2020-03-27 2020-03-27 Power supply member and motor assembly

Country Status (1)

Country Link
CN (1) CN113452208A (en)

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