CN211209515U - Motor and electric product - Google Patents

Abstract

The utility model provides a motor and electric product, the motor includes the casing of tube-shape and covers the open-ended resin holder of casing, it has electronic component and ground connection part to carry on the resin holder, electronic component with the ground connection part electricity is connected, ground connection part insert molding in the resin holder has: an insertion portion inserted into the resin holder; and a contact portion connected to the insertion portion, exposed to a radial outer side of the resin holder, and coming into contact with the housing, wherein a support wall extending in an axial direction is integrally formed on an outer periphery of the resin holder, and the contact portion extends in the axial direction on the radial outer side of the support wall. Therefore, reliable grounding can be realized, the available space of the resin retainer is increased, the sizes of the motor and the electric product are reduced, and the production cost can be reduced.

Description

Motor and electric product

Technical Field

The utility model relates to an electromechanical field.

Background

In the manufacture of a motor, an electric element is generally mounted on a resin brush plate of the motor, and the electric element needs to be grounded in order to electrically protect the electric element, and a grounding method generally adopted is:

in the first aspect, after the resin brush tray is molded, the grounding member is fixed to the outer side in the radial direction of the peripheral wall of the resin brush tray, the grounding member is grounded by the contact of the casing of the motor with the grounding member, and the grounding pin of the electrical element is electrically connected to the grounding member, thereby grounding the electrical element.

In the second mode, the ground terminal is integrally formed with the interface portion of the resin brush tray, the housing interface portion corresponding to the interface portion of the resin brush tray is provided on the housing, the ground terminal is grounded by coupling the ground terminal to the housing interface portion in the axial direction, and the ground pin of the electrical component is electrically connected to the ground terminal, thereby grounding the electrical component.

In the third mode, the grounding pin of the electrical component is bent to the radial outer side of the resin brush disk and directly abutted against the housing, thereby achieving grounding of the electrical component.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These 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 invention.

SUMMERY OF THE UTILITY MODEL

The inventors have found that, in the first aspect, the grounding member needs to be sandwiched between the circumferential wall of the resin brush tray in the radial direction, which results in a large space of the resin brush tray in the radial direction, and that the grounding member and the resin brush tray are separate members, which requires assembly work, which increases the number of steps, and that, after the grounding member is attached to the resin brush tray, the grounding member is easily displaced when the assembly work of other members is performed, which results in unreliable grounding; in the second mode, corresponding coupling structures are required to be respectively formed on the resin brush disc and the shell, so that the requirement on the processing technology is high; in the third mode, the grounding pin of the electrical component needs to be bent to the radial outer side of the resin brush disk, so that special requirements are imposed on the arrangement position of the electrical component on the resin brush disk, the difficulty of circuit design is increased, and the pin of the grounding component is easy to fall off from the edge of the resin brush disk in the assembling process, so that the grounding pin is not reliably abutted against the casing, or the grounding pin of the electrical component is usually thin and short due to the vibration existing in the operation of the motor, so that the reliable contact between the grounding pin and the casing cannot be ensured.

To solve at least one of the above problems or other similar problems, embodiments of the present invention provide a motor and an electric product.

According to an aspect of the embodiments of the present invention, there is provided a motor including a cylindrical housing and a resin holder covering an opening of the housing, an electronic component and a grounding member being mounted on the resin holder, the electronic component being electrically connected to the grounding member, wherein the grounding member is insert-molded in the resin holder, and the grounding member has: an insertion portion inserted into the resin holder; and a contact portion connected to the insertion portion, exposed to a radial outer side of the resin holder, and coming into contact with the housing, wherein a support wall extending in an axial direction is integrally formed on an outer periphery of the resin holder, and the contact portion extends in the axial direction on the radial outer side of the support wall.

In at least one embodiment, the embedded portion is not within an axial height of the abutment portion.

In at least one embodiment, the insertion portion has a first radially extending portion extending radially inward, the abutment portion is integrally formed with the insertion portion, and the abutment portion is in contact with a radially outer end of the first radially extending portion and extends in a direction axially away from the first radially extending portion.

In at least one embodiment, the area of the first radial extension is greater than the area of the abutment.

In at least one embodiment, the first radially extending portion has an exposed portion exposed from the resin holder, the exposed portion being exposed in an axial direction, and the electronic component is electrically connected to the exposed portion.

In at least one embodiment, the support wall has a first accommodation groove extending in the axial direction, and the abutment portion is accommodated in and extends along the first accommodation groove, and a radially outer surface of the abutment portion is closer to the casing than a radially outer surface of the support wall.

In at least one embodiment, the grounding member further has a third radially extending portion that is contiguous to an end of the abutting portion that is remote from the resin holder and extends radially inward, and the support wall further has a second receiving groove that extends radially, the third radially extending portion being received in and extending along the second receiving groove.

In at least one embodiment, the number of the supporting walls is two, a positioning groove is formed between the two supporting walls, and a protrusion protruding toward a radial inner side is formed on an inner surface of the casing, and the protrusion is inserted into the positioning groove.

In at least one embodiment, the grounding member has a plurality of the abutting portions.

In at least one embodiment, the thickness of the abutting portion in the radial direction gradually increases from a side away from the embedded portion to a side close to the embedded portion.

In at least one embodiment, the resin holder is a resin brush tray.

According to another aspect of the present invention, there is provided an electric product having the motor of any one of the above embodiments.

The embodiment of the utility model provides an one of the beneficial effect lies in: the grounding part of the motor is embedded and molded in the resin retainer of the motor, so that the grounding part can be prevented from falling off when other parts of the motor are assembled, the grounding part is ensured to be reliably grounded, the available space of the resin retainer is improved due to the simple structure of the grounding part, and the production cost can be reduced.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention 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 invention 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 invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, 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 cross-sectional view of a motor according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of the motor shown in fig. 1.

Fig. 3 is a schematic view of a resin holder according to an embodiment of the present invention, as viewed from one direction.

Fig. 4 is a plan view of the resin holder shown in fig. 3.

Fig. 5 is a schematic view of the resin holder shown in fig. 4 with a part of the resin removed.

Fig. 6 is a schematic diagram of an embodiment of a grounding component according to an embodiment of the present invention.

Fig. 7 is a schematic view of the grounding member shown in fig. 6, viewed from another direction.

Fig. 8 is a schematic diagram of another embodiment of a grounding component according to an embodiment of the present invention.

Fig. 9 is a schematic view of the grounding member shown in fig. 8, viewed from another direction.

Detailed Description

The foregoing and other features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the embodiments in which the principles of the invention may be employed, it being understood that the invention is not limited to the embodiments described, 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 invention will be described below with reference to the accompanying drawings. These embodiments are merely exemplary and are not intended to limit the present invention.

In the embodiments of the present invention, the terms "first", "second", "upper", "lower", and the like are used for distinguishing between different elements by reference, but do not denote any order, such as spatial arrangement, temporal order, or the like, of the elements, and the elements should not be limited by these 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 invention, the singular forms "a", "an", and the like include the plural forms and should be interpreted 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 invention, for the sake of convenience of description, a radial direction around the center axis of the rotating shaft of the motor is referred to as "radial direction", a direction around the center axis is referred to as "circumferential direction", a direction along the center axis or a direction parallel thereto is referred to as "axial direction", a side away from the center axis in the radial direction is referred to as "radially outer side", and a side close to the center axis in the radial direction is referred to as "radially inner side".

Embodiments of the first aspect

An embodiment of the first aspect of the present invention provides a motor, fig. 1 is a schematic cross-sectional view of a motor according to an embodiment of the present invention along an axial direction, fig. 2 is an exploded schematic view of a motor shown in fig. 1, fig. 3 is a schematic view of a resin holder according to an embodiment of the present invention viewed from a direction, and fig. 4 is a top view of a resin holder shown in fig. 3.

In the embodiment of the present invention, as shown in fig. 1, the motor 1 may include a cylindrical casing 100 and a resin holder 200, as shown in fig. 2, the casing 100 has an opening 100a on one side in the axial direction S, and the resin holder 200 covers the opening 100 a.

As shown in fig. 3 and 4, the resin holder 200 may be mounted with the electronic component 300 and the grounding member 400, wherein the grounding member 400 is insert-molded into the resin holder 200. For example, the ground member 400 is made of a conductive material (e.g., metal such as aluminum or copper), the resin holder 200 is made of a resin material, and the molded ground member 400 is embedded in the resin holder 200 by an insert molding process. The grounding member 400 may be insert-molded in the resin holder 200 by other processes, and the present application does not limit the specific molding process. By fitting the grounding member 400 into the resin holder 200, the grounding member 400 can be prevented from falling off from the resin holder 200 when assembling other members.

Fig. 5 is a schematic view of the resin cage 200 shown in fig. 4 with a part of the resin removed. As shown in fig. 5, the electronic component 300 and the ground member 400 are electrically connected. For example, the ground pin of the electronic component 300 may be electrically connected to the ground component 400 by soldering, or may be electrically connected by other methods, and reference may be made to the related art specifically, and the present application does not limit the specific manner of implementing the electrical connection.

Fig. 6 is a schematic view of an embodiment of a grounding member according to an embodiment of the present invention, and fig. 7 is a schematic view of the grounding member shown in fig. 6, viewed from another direction. Fig. 8 is a schematic view of another embodiment of a grounding member according to an embodiment of the present invention, and fig. 9 is a schematic view of the grounding member shown in fig. 8, viewed from another direction. The same reference numerals in fig. 6, 7, 8 and 9 denote the same or corresponding parts or components, and will not be further described below.

In at least one embodiment, as shown in fig. 6 and 8, the grounding component 400 may include an embedded portion 410 and an abutting portion 420, the abutting portion 420 being connected with the embedded portion 410. As shown in fig. 4, the fitting portion 410 is fitted into the resin holder 200, and as shown in fig. 3, the contact portion 420 is exposed radially outward of the resin holder 200. When the resin holder 200 is covered on the opening 100a of the housing 100, the abutting portion 420 abuts against the housing 100, that is, the abutting portion 420 is electrically connected to the housing 100 and grounded. Thereby, the electronic component 300 is grounded through the grounding part 400 and the chassis 100.

In at least one embodiment, the abutment 420 can be integrally formed with the insert 410.

As shown in fig. 6 and 8, the insertion portion 410 may include a first radial extension 411, the first radial extension 411 extending toward a radially inner side of the motor. As shown in fig. 6, the abutting portion 420 abuts on one end of the first radially extending portion 411 on the radially outer side and extends in the axial direction away from the first radially extending portion 411.

As shown in fig. 8, the insertion portion 410 may further include a first axial extension portion 412 and a second radial extension portion 413, the first axial extension portion 412 is connected to one end of the first radial extension portion 411 on the radial outer side and extends in the axial direction, the second radial extension portion 413 is connected to one end of the first axial extension portion 412 away from the first radial extension portion 411 and extends in the radial outer side, and the abutting portion 420 is connected to one end of the second radial extension portion 413 on the radial outer side and extends in the direction away from the first radial extension portion 411 in the axial direction.

In at least one embodiment, as shown in fig. 3, the outer periphery of the resin holder 200 may further integrally form the support wall 210, the support wall 210 extends in the axial direction S, and the abutment portion 420 extends in the axial direction S on the radially outer side of the support wall 210. The support wall 210 supports the contact portion 420, thereby preventing the contact portion 420 from being deformed in a vibration environment and from being unable to reliably contact the housing 100.

In at least one embodiment, as shown in fig. 6 and 8, the inset 410 is not within the axial height of the abutment 420. That is, there is no other constituent portion of the grounding member 400 within the axial height range of the abutting portion 420, that is, there is no other portion of the grounding member within the axial height range of the abutting portion, that is, there is no structure of two sandwiching walls for sandwiching the brush plate, which are diametrically opposed, by which the radial occupation space of the grounding member 400 can be reduced, thereby reducing the radial size of the motor. Further, since the grounding member 400 has a simple structure and is easily molded, the production cost can be reduced.

In at least one embodiment, as shown in fig. 6 and 8, the area of the first radial extension 411 is greater than the area of the abutment 420. Thus, fitting the first radially extending portion 411 having a large area into the resin holder 200 makes it possible to make the ground member 400 less likely to fall off.

In at least one embodiment, as shown in fig. 6 and 8, the first radial extending portion 411 has an exposed portion 411a exposed from the resin holder 200. As shown in fig. 4, the exposed portion 411a is exposed in the axial direction S, and the electronic component 300 is electrically connected to the exposed portion 411 a. This makes it easy to electrically connect the electronic component 300 to the exposed portion 411a, and the electronic component 300 can be reliably grounded.

In at least one embodiment, as shown in fig. 6 and 8, the grounding member 400 may further include a third radially extending portion 430, as shown in fig. 3, the third radially extending portion 430 being contiguous with an end of the abutting portion 420 remote from the resin holder 200 and extending radially inward.

In at least one embodiment, as shown in fig. 3, the support wall 210 may have a first receiving groove 211 and a second receiving groove 212, the first receiving groove 211 extending in the axial direction to receive the abutment portion 420; the second receiving groove 212 extends in a radial direction, and receives the third radial extension 430. In addition, the radially outer surface of the abutment 420 is closer to the casing 100 than the radially outer surface of the support wall 210. This enables the abutting portion 420 to reliably abut against the housing 100.

In at least one embodiment, as shown in fig. 3, the resin holder 200 may include 2 support walls 210 with positioning grooves 220 formed between the 2 support walls 210. As shown in fig. 2, a protrusion 110 protruding toward the inner side in the radial direction is formed on the inner surface of the casing 100, and when the resin holder 200 covers the opening 100a of the casing 100, the protrusion 110 can be inserted into the positioning groove 220, thereby positioning the casing 100 and the resin holder 200. In addition, the resin holder 200 may further include other numbers of the supporting walls 210 according to actual needs, and the number of the supporting walls 210 is not limited in the present application.

In at least one embodiment, the grounding member 400 may include a plurality of abutting portions 420, and the grounding member 400 illustrated in fig. 6 and 8 includes 2 abutting portions 420, but the present application is not limited thereto, and the grounding member 400 may include more than 3 abutting portions 420, whereby, if there occurs a case in which 1 abutting portion 420 fails to reliably abut against the chassis 100, reliable grounding can be achieved by abutting another abutting portion 420 against the chassis 100, that is, the grounding member 400 can more reliably abut against the chassis 100. In addition, the ground member 400 may include only 1 abutting portion 420, whereby the structure of the ground member 400 is further simplified, thereby further reducing the production cost.

In at least one embodiment, as shown in fig. 7 and 9, the thickness of the abutment portion 420 in the radial direction gradually increases from a side away from the embedded portion 410 to a side close to the embedded portion 410. This makes it easy to press the resin holder 200 into the opening 100a of the housing 100 in the axial direction, and the grounding member 400 can reliably abut against the housing 100.

In at least one embodiment, resin holder 200 is a resin brush tray. Other structures of the resin brush tray may refer to the related art, and the present application does not limit this.

In addition, the motor 1 may further include other components such as a stator and a rotor, and the specific structure may also refer to the related art, which is not limited in this application.

According to the embodiment of the first aspect of the present invention, the grounding member of the motor is insert-molded in the resin holder of the motor, so that the grounding member can be prevented from falling off when the assembly operation of the other members of the motor is performed, thereby ensuring reliable grounding of the grounding member, and since the grounding member has a simple structure, the available space of the resin holder is increased, and the production cost can be reduced.

Embodiments of the second aspect

Embodiments of the second aspect of the present invention provide an electrical product having a motor as described in embodiments of the first aspect. Since the structure of the motor has been described in detail in the embodiment of the first aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.

In the embodiment of the second aspect of the present invention, the type of the electrical product is not limited, and the electrical product may be a product having a motor, such as a brake system, an air conditioner, a water dispenser, a washing machine, a sweeper, a compressor, a blower, a blender, or an electrical device in other fields.

According to the embodiment of the second aspect of the present application, the grounding member of the motor is insert-molded in the resin holder of the motor, so that the grounding member can be prevented from falling off when the other components of the motor are assembled, thereby ensuring reliable grounding of the grounding member, and since the grounding member has a simple structure, the available space of the resin holder is increased, and the production cost can be reduced, thereby ensuring reliable grounding of the electrical product, reducing the size of the electrical product, and reducing the production cost of the electrical product.

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 motor including a cylindrical housing and a resin holder covering an opening of the housing, the resin holder having an electronic element and a grounding member mounted thereon, the electronic element being electrically connected to the grounding member,

the grounding member is insert-molded in the resin holder, and the grounding member includes:

an insertion portion inserted into the resin holder; and

a contact part connected with the embedded part, exposed outside the radial direction of the resin retainer and contacted with the casing,

the outer periphery of the resin holder is integrally formed with a support wall extending in the axial direction, and the abutting portion extends in the axial direction on the radially outer side of the support wall.

2. The motor of claim 1,

the embedded portion is not within an axial height range of the abutting portion.

3. The motor of claim 1,

the insert portion has a first radially extending portion extending radially inward,

the abutting part and the embedding part are integrally formed, and the abutting part is connected with one end of the radial outer side of the first radial extending part and extends in the direction far away from the first radial extending part along the axial direction.

4. The motor of claim 3,

the area of the first radially extending portion is greater than the area of the abutment.

5. The motor of claim 3,

the first radially extending portion has an exposed portion exposed from the resin holder, the exposed portion being exposed in an axial direction, and the electronic component is electrically connected to the exposed portion.

6. The motor of claim 1,

the support wall has a first accommodation groove extending in the axial direction, and the abutment portion is accommodated in and extends along the first accommodation groove, and a radially outer surface of the abutment portion is closer to the casing than a radially outer surface of the support wall.

7. The motor of claim 1,

the grounding member further has a third radially extending portion that is in contact with an end of the abutting portion that is away from the resin holder and extends radially inward,

the support wall also has a second receiving groove extending in the radial direction, and the third radial extension is received in and extends along the second receiving groove.

8. The motor of claim 1,

the number of the supporting walls is two, a positioning groove is formed between the two supporting walls,

the inner surface of the casing is formed with a protrusion protruding toward a radial inner side, and the protrusion is inserted into the positioning groove.

9. The motor of claim 1,

the grounding member has a plurality of the abutting portions.

10. The motor of claim 1,

the thickness of the abutting portion in the radial direction gradually increases from a side away from the insertion portion to a side close to the insertion portion.

11. The motor according to any one of claims 1 to 10,

the resin holder is a resin brush plate.

12. An electrical product, characterized in that it has a motor according to any one of claims 1 to 11.

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