Motor and drive arrangement

Abstract

This application provides a motor and a drive device. The motor includes: a housing with an opening on one axial side; a resin cage mounted on the opening of the housing; and a grounding component separately formed from the resin cage, at least a portion of which is axially clamped between the edge of the housing and the resin cage. Through this application embodiment, reliable grounding of the grounding component is achieved by axial clamping between the edge of the motor housing and the resin cage, and the assembly of the grounding component is simple.

Description

Technical Field

[0001] This application relates to the field of electromechanical engineering, and more particularly to a motor and drive device. Background Technology

[0002] Typically, motors have a grounding component that grounds the electronic components inside the motor.

[0003] In some existing structures, the motor's electronic components are housed on a resin brush plate. After the resin brush plate is formed, a grounding component is fixed to the resin brush plate by clamping its peripheral wall. The radially inner portion of the grounding component on the peripheral wall of the resin brush plate is connected to the grounding pin of the electronic component, while the radially outer portion of the grounding component on the peripheral wall of the resin brush plate is grounded by abutting against the inner circumference of the housing, thus realizing the grounding structure of the electronic component. With this structure, the grounding component needs to be clamped to the peripheral wall of the brush plate. Since the grounding component and the resin brush plate are separate components, assembly is required, which is time-consuming. Furthermore, when assembling with other components after assembly, there is a possibility that the grounding component may shift.

[0004] In other structures, the grounding component is integrally cast into the brush plate with resin, thereby reliably fixing the grounding component and preventing circumferential displacement. However, in this structure, the time required for casting the grounding component into the brush plate with resin is relatively long.

[0005] In addition, in some other existing structures, the grounding terminal, as a grounding component, is integrally formed into the busbar holder. One end of the grounding terminal is electrically connected to the electronic component housed in the busbar holder, and the other end of the grounding terminal abuts against the interface portion of the motor housing to ground, thereby realizing the grounding structure of the electronic component. However, in this structure, the time required for casting the grounding terminal resin into the busbar holder is relatively long.

[0006] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0007] To address at least one or similar of the aforementioned problems, embodiments of this application provide a motor and drive device, wherein the grounding component is reliably grounded, and the assembly of the grounding component is simple and saves time.

[0008] According to a first aspect of the embodiments of this application, a motor is provided, the motor comprising:

[0009] The housing has an opening on one axial side;

[0010] A resin retainer, which is mounted on the opening of the housing; and

[0011] The grounding component is separately molded from the resin cage.

[0012] At least a portion of the grounding component is axially clamped between the edge of the housing and the resin retainer.

[0013] In one or more embodiments, the resin retainer is a resin brush plate.

[0014] In one or more embodiments, the edge of the housing has an axially recessed groove, and a portion of the grounding component is located within the groove.

[0015] In one or more embodiments, the resin retainer has an interface portion extending radially inward to radially outward from the housing, a portion of the interface portion being located within the groove, and the grounding member being axially clamped within the groove between the edge of the housing and the interface portion.

[0016] In one or more embodiments, the resin retainer has ribs disposed on the surface of the resin retainer on the side that holds the grounding member and abuts against the grounding member.

[0017] In one or more embodiments, the grounding component includes:

[0018] The first radially extending portion is located inside the housing and is inserted into the motor's circuit board;

[0019] The second radially extending portion extends to the edge of the housing;

[0020] The third radial extension portion is located radially between the first radial extension portion and the second radial extension portion;

[0021] A first axially extending portion extends axially and connects to the first radially extending portion and the third radially extending portion at both ends of the axial direction, the first axially extending portion abutting against the circuit board; and

[0022] The second axial extension portion extends axially and connects the second radial extension portion and the third radial extension portion at both ends of the axial direction, respectively.

[0023] The first axial extension portion, the third radial extension portion, and the second axial extension portion are U-shaped.

[0024] In one or more embodiments, the resin retainer has an axial extension that is inserted into the U-shaped recess of the grounding member, and the axial extension does not abut against the third radial extension of the grounding member in the axial direction.

[0025] In one or more embodiments, the motor further has an external member located axially opposite to the side of the resin cage that abuts against the grounding member, the external member being fixed to the housing and clamping the resin cage axially with the housing.

[0026] According to a second aspect of the embodiments of this application, a driving device is provided, the driving device including the motor described in the first aspect above.

[0027] One of the beneficial effects of the embodiments of this application is that at least a portion of the grounding component is axially clamped between the edge of the motor housing and the resin retainer, and the grounding component is reliably grounded by the axial clamping between the edge of the motor housing and the resin retainer, and the assembly operation of the grounding component is simple.

[0028] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents. Attached Figure Description

[0029] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0030] Figure 1 This is a schematic diagram of a motor according to a first aspect embodiment of this application;

[0031] Figure 2 This is another schematic diagram of a motor according to the first aspect embodiment of this application;

[0032] Figure 3 This is a cross-sectional schematic diagram of a motor according to the first aspect of this application;

[0033] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0034] Figure 5 This is a schematic diagram of the motor body according to the first aspect of this application;

[0035] Figure 6 This is a schematic diagram of the motor body and resin cage according to the first aspect of this application;

[0036] Figure 7 This is another cross-sectional schematic diagram of the motor according to the first aspect embodiment of this application;

[0037] Figure 8 This is a schematic diagram of a resin holder with a circuit board and a grounding component according to the first aspect of this application;

[0038] Figure 9 yes Figure 8 An enlarged schematic diagram of part B in the middle;

[0039] Figure 10 This is a schematic diagram of a resin retainer according to a first aspect embodiment of this application;

[0040] Figure 11 yes Figure 10 An enlarged schematic diagram of part C in the middle. Detailed Implementation

[0041] Referring to the accompanying drawings, the foregoing and other features of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this application may be employed. It should be understood that this application is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0042] In embodiments of this application, the term "and / or" includes any one and all combinations of one or more of the terms listed in association. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0043] In the embodiments of this application, the singular forms "a," "the," etc., may include the plural forms and should be broadly interpreted as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0044] Furthermore, in the following description of this application, for ease of explanation, the direction extending along or parallel to the central axis OO' of the motor is referred to as "axial direction"; the radial direction centered on the central axis OO' is referred to as "radial direction"; the radial direction closer to the central axis OO' is referred to as "radial inner side" or "inner side"; the radial direction farther from the central axis OO' is referred to as "radial outer side" or "outer side"; and the direction around the central axis OO' is referred to as "circumferential direction". However, it is important to note that these are merely for ease of explanation and do not limit the orientation during motor use and manufacturing.

[0045] The embodiments of this application will now be described with reference to the accompanying drawings.

[0046] First aspect of the embodiments

[0047] An embodiment of the first aspect of this application provides a motor.

[0048] Figure 1 This is a schematic diagram of a motor according to a first aspect embodiment of the present application, showing the motor viewed from the side in one direction. Figure 2 This is another schematic diagram of a motor according to a first aspect embodiment of this application; it shows the motor viewed from the side from another direction. Figure 3 This is a schematic cross-sectional view of a motor according to a first aspect embodiment of this application; it shows the motor along... Figure 2 The case where the plane perpendicular to the paper, containing the straight line CC, cuts through the motor.

[0049] like Figures 1 to 3 As shown, the motor 100 includes a housing 11, a resin cage 12, and a grounding component 13. The housing 11 has an opening 111 on one axial side (e.g., side O) (see...). Figure 5 The resin retainer 12 is mounted on the opening 111 of the housing 11, and the grounding component 13 is separately formed from the resin retainer 12.

[0050] like Figure 3 As shown, at least a portion of the grounding component 13 is axially clamped between the edge 112 of the housing 11 and the resin retainer 12.

[0051] As can be seen from the above embodiments of this application, by clamping at least a portion of the grounding component 13 in the axial direction by the edge 112 of the motor housing 11 and the resin retainer 12, the grounding component 13 is reliably connected to the motor housing 11, which can realize reliable grounding of the grounding component 13. Furthermore, the assembly operation of the grounding component 13 is simple and can save time.

[0052] In this embodiment, the motor 100 can be various types of motors, such as brushed motors, brushless motors, etc. Furthermore, in addition to the aforementioned housing 11, resin retainer 12, and grounding component 13, the motor 100 may also include other components. For example, the motor 100 may also include components centered on the central axis OO' (see...). Figure 3 The rotating shaft that rotates around the rotating shaft, the rotor that rotates together with the rotating shaft, the stator that is radially opposite the rotor, and the bearings, etc., can be referred to in related technologies.

[0053] In one or more embodiments, the resin retainer 12 can be a brush disk, thereby enabling reliable grounding of electronic components disposed on the brush disk for a brushed motor having a brush disk, by connecting its grounding pin to the grounding component 13 and by conveniently clamping the grounding component between the brush disk and the housing through the structure of the brush disk being mounted on the edge of the housing.

[0054] However, this application is not limited to this. For example, the resin retainer 12 can also be a busbar retainer, thereby enabling the electronic components disposed in the busbar retainer to be reliably grounded by connecting them to the grounding component 13 for a brushless motor.

[0055] like Figure 3 As shown, in one or more embodiments, the motor 100 further includes an external member 15, which is located axially opposite to the side of the resin retainer 12 that abuts against the grounding member 13. The external member 15 is fixed to the housing 11 and clamps the resin retainer 12 axially with the housing 11. Thus, by clamping the resin retainer 12 with the external member 15, reliable contact between the grounding member 13 and the edge 112 of the housing can be further ensured, achieving a reliable grounding structure.

[0056] In this embodiment, the external component 15 can be various parts disposed on the axial O side of the resin retainer 12, such as a motor flange, or a cover including the motor and other parts disposed on the axial O side of the cover, such as a gearbox assembly, etc. This application does not limit this. Furthermore, regarding the method of fixing the external component 15 and the housing 11, please refer to related technologies.

[0057] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle. For example... Figure 4 As shown, in one or more embodiments, the grounding component 13 includes a first radial extension 131, a second radial extension 132, a third radial extension 133, a first axial extension 134, and a second axial extension 135.

[0058] like Figure 4As shown, the first radial extension 131 is located inside the housing 11 and inserted into the circuit board 14 of the motor 100; the second radial extension 132 extends to the edge 112 of the housing 11; the third radial extension 133 is located radially between the first radial extension 131 and the second radial extension 132; the first axial extension 134 extends axially and connects the first radial extension 131 and the third radial extension 133 at both axial ends, and the first axial extension 134 abuts against the circuit board 14; the second axial extension 135 extends axially and connects the second radial extension 132 and the third radial extension 133 at both axial ends. Figure 4 As shown in the diagram, the first axial extension portion 134, the third radial extension portion 133, and the second axial extension portion 135 are U-shaped, forming a recess 136.

[0059] Therefore, relying on the radial elastic force of the U-shaped portion of the grounding component 13, it can be ensured that the edge of the grounding component 13 (such as the second radial extension portion 132) extends to the edge of the housing 112, that is, it can be ensured that the radially outer end of the second radial extension portion 132 extends to the edge of the housing 112, ensuring that the grounding component 13 contacts the housing 11 and is reliably grounded. In addition, the first radial extension portion 131 of the grounding component 13 is inserted into the circuit board 14 of the motor 100, which can ensure that the grounding component 13 is reliably connected to the grounding pin of the electronic component on the circuit board 14; the first axial extension portion 134 of the grounding component 13 abuts against the circuit board 14 axially, and the radially inner portion of the grounding component 13 is reliably supported, so that the edge of the grounding component 13, that is, the second radial extension portion 132, extends sufficiently radially outward, thereby being reliably clamped by the edge of the housing 112 and the resin retainer 12.

[0060] The above has been approved. Figure 4 The shape of the grounding component 13 has been illustrated by way of example, but this application is not limited thereto. The grounding component 13 may also have other shapes, such as a radially extending plate-shaped grounding component, one end of which is connected to the grounding pin of an electronic component disposed inside the motor, and the other end of which is axially held by the edge of the housing and the resin retainer; or, the grounding component may have a bent shape with an axially extending portion and a radially extending portion, the axially extending portion of which can be inserted into the circuit board according to the circuit board's orientation or parallel to and abutting the circuit board to connect to the grounding pin of the electronic component on the circuit board, and the radially extending portion of which is axially held by the edge of the housing and the resin retainer; or, the grounding component may have a shape with two bends, etc. The above are merely illustrative examples, but this application is not limited thereto, as long as at least a portion of the grounding component 13 can be axially held by the edge of the housing and the resin retainer.

[0061] like Figure 4As shown, in one or more embodiments, the resin retainer 12 has an axial extension 121 that inserts into the aforementioned U-shaped recess 136 of the grounding member 13. This reliably supports the grounding member 13 and prevents it from shifting during motor assembly or operation.

[0062] In the embodiments of this application, the axial extension 121 and the third radial extension 133 of the grounding component 13 may not abut in the axial direction, that is, there is a gap between the axial extension 121 and the third radial extension 133 in the axial direction. Thus, it is possible to avoid affecting the design freedom of the axial dimension of the grounding component.

[0063] Figure 5 This is a schematic diagram of a motor body according to a first aspect embodiment of the present application, showing a motor housing and motor components housed inside the housing.

[0064] like Figure 5 As shown, in one or more embodiments, the edge 112 of the housing 11 has an axially recessed groove 1121, and the grounding component 13 ( Figure 5 A portion of the grounding member 13 (not shown) (such as the second radial extension 132) is located within the groove 1121. Thus, the grounding member 13 is circumferentially limited by the groove 1121, preventing the grounding member 13 from shifting circumferentially.

[0065] Figure 6 This is a schematic diagram of the motor body and resin cage according to the first aspect of this application, showing the resin cage assembled in... Figure 5 The motor body shown is in this configuration.

[0066] like Figure 6 As shown, in one or more embodiments, the resin retainer 12 has an interface portion 122 extending radially inward to radially outward from the housing 11, a portion of the interface portion 122 being located within a groove 1121, and the grounding member 13 being axially clamped within the groove 1121 between the edge 112 of the housing 11 and the interface portion 122.

[0067] Therefore, by using the groove 1121 to simultaneously limit the grounding component 13 and the interface portion 122, a more reliable clamping of the grounding component 13 can be achieved.

[0068] In this embodiment, the fact that a portion of the grounding component 13 is located within the groove 1121 can be understood as the portion of the grounding component 13 located within the groove 1121 being positioned circumferentially across the entire circumferential direction of the groove 1121. This allows for better circumferential positioning of the grounding component 13. However, this application is not limited to this. For example, the portion of the grounding component 13 located within the groove 1121 may be positioned at a partial circumferential position within the groove 1121, such as at either end of the groove 1121. In other words, the grounding component 13 may not be located at the circumferential middle position of the groove 1121. This saves material.

[0069] For example, Figure 7 This is another cross-sectional schematic diagram of a motor according to a first aspect embodiment of this application, showing the motor along... Figure 2 In the case where the plane perpendicular to the paper cuts through the motor, the straight line AA is located approximately in the middle of the circumferential direction of the groove 1121.

[0070] like Figure 7 As shown in the cross-sectional view, in the position indicated, the edge 112 of the motor housing 11 and the resin retainer 12 directly abut against each other, without clamping the grounding component 13.

[0071] Figure 8 This is a schematic diagram of a resin holder with a circuit board and a grounding component according to the first aspect of this application, showing the case where a grounding component 13 is provided on the resin holder 12; Figure 9 yes Figure 8 An enlarged schematic diagram of part B in the middle; Figure 10 This is a schematic diagram of a resin retainer according to a first aspect embodiment of this application, showing that... Figure 8 The situation observed after removing the grounding component 13 and the circuit board 14 in the middle. Figure 11 yes Figure 10 An enlarged schematic diagram of part C in the middle.

[0072] like Figures 8 to 11 As shown, in one or more embodiments, the resin retainer 12 has a rib 123 disposed on the surface of the resin retainer 12 on one side of the grounding member 13 and abutting against the grounding member 13. Thus, the rib 123 further reliably abuts the resin retainer 12 and the grounding member 13, achieving further reliable clamping of the grounding member 13 between the resin retainer 12 and the housing edge 112.

[0073] In this embodiment, the rib 123 can be formed at any position on the resin retainer 12 where it abuts against the grounding member 13, for example, as Figure 11As shown, ribs 123 can be formed at both the radially inner and radially outer portions of the resin retainer 12 that abut against the grounding member 13, but are not limited thereto. Furthermore, the number of ribs 123 can be any suitable value, and this application does not limit it.

[0074] The motors of this application have been described above from different perspectives through different embodiments. These embodiments can be combined arbitrarily, and further details are omitted here. Furthermore, the above descriptions are merely illustrative, but the application is not limited thereto. Appropriate modifications can be made based on the above embodiments. Additionally, the motor may include other components, such as a cover, which can be referenced in related technologies, and further details are omitted here.

[0075] According to the above embodiments of this application, the grounding component 13 is reliably connected to the motor housing 11 by the axial clamping of the edge 112 of the motor housing 11 and the resin retainer 12, which can realize the reliable grounding of the grounding component 13. Furthermore, the assembly operation of the grounding component 1 is simple and can save time.

[0076] Second aspect of the embodiments

[0077] An embodiment of the second aspect of this application provides a drive device having the motor 100 described in the embodiment of the first aspect. Since the structure of the motor 100 has been described in detail in the embodiment of the first aspect, the contents are incorporated herein by reference, and the description is omitted here.

[0078] In this embodiment of the application, the driving device can be any device or equipment using the motor 100, including various household appliances, office automation equipment, industrial equipment, vehicle devices, or components of various devices, such as a sunroof driving component using the motor 100, which may also include a gearbox, etc.

[0079] According to the embodiments of this application, in the drive device of the motor including the first aspect embodiment, at least a portion of the grounding component is axially clamped between the edge of the motor housing and the resin retainer. The axial clamping of the grounding component by the edge of the motor housing and the resin retainer achieves reliable grounding, and the assembly operation of the grounding component is simple, which can improve the performance of the drive device.

[0080] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

[0081] Preferred embodiments of this application have been described above with reference to the accompanying drawings. Many features and advantages of these embodiments are apparent from this detailed description, and therefore the appended claims are intended to cover all such features and advantages of these embodiments that fall within their true spirit and scope. Furthermore, since many modifications and alterations will readily occur to those skilled in the art, the embodiments of this application are not intended to be limited to the precise structures and operations illustrated and described, but rather to encompass all suitable modifications and equivalents falling within their scope.

Claims

1. A motor, comprising: The housing has an opening on one axial side; A resin retainer mounted on the opening of the housing; as well as The grounding component is separately molded from the resin cage. Its features are, One end of the grounding component is connected to the grounding pin of an electronic component located inside the motor. At least a portion of the grounding component is axially clamped between the edge of the housing and the resin retainer. The edge of the housing has an axially recessed groove, and a portion of the grounding component is located within the groove. The resin retainer has an interface portion extending radially inward to radially outward from the housing, a portion of which is located within the groove, and the grounding member is axially clamped within the groove between the edge of the housing and the interface portion.

2. The motor according to claim 1, characterized in that, The resin holder is a resin brush plate.

3. The motor according to claim 1, characterized in that, The resin retainer has ribs that are disposed on the surface of the resin retainer on the side that holds the grounding component and abut against the grounding component.

4. The motor according to claim 1, characterized in that, The grounding component includes: The first radially extending portion is located inside the housing and is inserted into the motor's circuit board; The second radially extending portion extends to the edge of the housing; The third radial extension portion is located radially between the first radial extension portion and the second radial extension portion; A first axially extending portion extends axially and connects to the first radially extending portion and the third radially extending portion at both ends of the axial direction, the first axially extending portion abutting against the circuit board; and The second axially extending portion extends axially and connects the second radially extending portion and the third radially extending portion at both ends of the axial direction, respectively. The first axial extension portion, the third radial extension portion, and the second axial extension portion are U-shaped.

5. The motor according to claim 4, characterized in that, The resin retainer has an axial extension that is inserted into the U-shaped recess of the grounding member, and the axial extension does not abut against the third radial extension of the grounding member in the axial direction.

6. The motor according to claim 1, characterized in that, The motor also has an external component located axially opposite to the side of the resin cage that abuts against the grounding component, the external component being fixed to the housing and clamping the resin cage axially with the housing.

7. A driving device, characterized in that, The drive device has a motor as described in any one of claims 1 to 6.

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