Motor and electrical product

Abstract

The embodiment of the utility model provides a motor and an electrical product. The motor comprises a housing; the stator is fixed in the machine shell; a rotor that has a rotating shaft and is provided facing the stator; the eccentric wheel is installed on the rotating shaft, the eccentric wheel is provided with a main shaft hole allowing the rotating shaft to be inserted and installed and an eccentric shaft hole allowing an eccentric shaft to be inserted and installed, the main shaft hole and the eccentric shaft hole are located in the two axial sides of the eccentric wheel respectively, and the eccentric wheel is further provided with a cutting part; the cut part is formed by cutting a part of the wall of the radial outer side of the eccentric wheel in the circumferential direction. Therefore, the initial dynamic balance of the eccentric wheel is adjusted by partially cutting off the outer side wall of the eccentric wheel, and vibration generated when the motor works is restrained; moreover, the cut position can be used as a positioning part when the eccentric shaft is pressed in, so that the eccentric shaft is pressed in along the axial direction of the eccentric wheel.

Description

Technical Field

[0001] The present application relates to the field of electromechanical engineering, and in particular to a motor and an electrical product. Background Art

[0002] Motors are widely used. Large motors can be used in automobiles, large engineering machinery, etc., and small motors can be used in small appliances, such as fans, electric hair clippers, etc. Compared with motors used for fans, motors used for electric hair clippers also need to be equipped with eccentric wheels, that is, the eccentric wheels are installed on the rotating shaft of the motor. The motor drives the eccentric wheel to rotate, which drives the eccentric shaft on the eccentric wheel to rotate, and then drives the blade to move through the eccentric shaft to achieve the haircutting function.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Utility Model Content

[0004] The inventors found that since the rotating shaft and the eccentric shaft are not coaxial, the motor is prone to vibration when rotating, affecting the user experience; on the other hand, the eccentric wheel needs to be provided with a main shaft hole for installing the rotating shaft of the motor and an eccentric shaft hole for installing the eccentric shaft. According to the structure of the existing eccentric wheel, burrs are prone to be generated at the intersection of the main shaft hole and the eccentric shaft hole when the eccentric wheel is processed. These burrs are difficult to remove and there is a risk of falling off, which poses a quality risk to the motor; in addition, the existing eccentric wheel does not have an exhaust structure inside, which makes it difficult to insert the shaft; and since the center of the eccentric shaft does not coincide with the center of the eccentric wheel, it is not easy to press the eccentric shaft into the eccentric wheel along the axial direction.

[0005] In response to at least one of the above problems or other similar problems, embodiments of the present application provide a motor and an electrical product.

[0006] According to a first aspect of an embodiment of the present application, a motor is provided, the motor comprising: a housing;

[0007] a stator, which is fixed in the casing;

[0008] a rotor having a rotation axis and disposed opposite to the stator; and

[0009] an eccentric wheel mounted on the rotating shaft,

[0010] The eccentric wheel has a main shaft hole for the rotating shaft to be inserted and installed and an eccentric shaft hole for the eccentric shaft to be inserted and installed, and the main shaft hole and the eccentric shaft hole are respectively located on both sides of the axial direction of the eccentric wheel.

[0011] The eccentric wheel further includes a cutout portion formed by cutting out a portion of a radially outer wall of the eccentric wheel in the circumferential direction.

[0012] In addition, optionally, the eccentric wheel further has a connecting hole, one axial end of the connecting hole is connected to the main shaft hole, and the other axial end of the connecting hole is connected to the eccentric shaft hole.

[0013] In addition, optionally, the central axis of the main shaft hole coincides with the central axis of the eccentric wheel.

[0014] In addition, optionally, the eccentric wheel further has an exhaust hole extending along the radial direction of the connecting hole and communicating with the connecting hole.

[0015] In addition, optionally, the cut-off portion is located on a side of the wall close to the spindle hole.

[0016] in,

[0017] In the case where the weight of the eccentric wheel corresponding to the eccentric shaft hole is greater than the weight of the eccentric shaft, the cut-off portion is located on the radially opposite side of the eccentric shaft hole;

[0018] In a case where the weight of the eccentric wheel corresponding to the eccentric shaft hole is less than the weight of the eccentric shaft, the cutout portion is located on the same side of the eccentric shaft hole in the radial direction.

[0019] In addition, optionally, the inner diameter of the connecting hole is smaller than the inner diameters of the main shaft hole and the eccentric shaft hole.

[0020] In addition, optionally, the inner wall of the main shaft hole includes a first groove recessed toward the radial outer side of the main shaft hole, and the first groove extends along the axial direction of the main shaft hole;

[0021] The inner wall of the eccentric shaft hole comprises a second groove recessed toward the radial outer side of the eccentric shaft hole, and the second groove extends along the axial direction of the eccentric shaft hole.

[0022] In addition, optionally, the eccentric wheel further has an exhaust hole extending along the radial direction of the main shaft hole and communicating with the main shaft hole, or an exhaust hole extending along the radial direction of the eccentric shaft hole and communicating with the eccentric shaft hole.

[0023] According to a second aspect of the embodiments of the present application, there is provided an electrical product, the electrical product comprising the motor described in any one of the above embodiments.

[0024] One beneficial effect of the embodiment of the present application is that the initial dynamic balance of the eccentric wheel is adjusted by partially cutting off the outer wall of the eccentric wheel, thereby suppressing the vibration generated when the motor is working; and the cut-off position can be used as a positioning portion when the eccentric shaft is pressed in, so that the eccentric shaft is pressed in along the axial direction of the eccentric wheel.

[0025] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the spirit and clauses of the appended claims, the embodiments of the present application include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 is a three-dimensional diagram of a motor according to an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A front view of the motor is shown;

[0029] Figure 3 is a three-dimensional diagram of an implementation of an eccentric wheel in an embodiment of the present application;

[0030] Figure 4 yes Figure 3 A top view of the eccentric wheel shown;

[0031] Figure 5 is a right side view of another embodiment of the eccentric wheel of the embodiment of the present application;

[0032] Figure 6 yes Figure 5 The eccentric wheel shown is a cross-sectional view along the axial direction without the eccentric shaft;

[0033] Figure 7 is a right side view of another embodiment of the eccentric wheel of the present application;

[0034] Figure 8 yes Figure 7 The eccentric wheel is shown in a section in the axial direction without the eccentric shaft. DETAILED DESCRIPTION

[0035] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents falling within the scope of the attached claims.

[0036] In the embodiments of the present application, the terms "first", "second", "upper", "lower", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or time order of these elements, etc., and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0037] In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0038] In addition, in the following description of the present application, for the convenience of explanation, the direction along the central axis O1 of the rotating shaft is referred to as the "axial direction" or the "axial extension direction", the radial direction centered on the central axis O1 is referred to as the "radial direction", the side away from the central axis O1 along the radial direction is referred to as the "radial outer side", the side close to the central axis O1 along the radial direction is referred to as the "radial inner side", and the direction around the central axis O1 is referred to as the "circumferential direction". In addition, the direction along the central axis of each hole is referred to as the axial direction of the corresponding hole, the radial direction centered on the central axis of each hole is referred to as the radial direction of the corresponding hole, the side away from the central axis along the radial direction is referred to as the radial outer side of the corresponding hole, the side close to the central axis along the radial direction is referred to as the radial inner side of the corresponding hole, and the direction around the central axis of each hole is referred to as the circumferential direction of the corresponding hole.

[0039] The embodiments of the present application are described below with reference to the accompanying drawings.

[0040] The present application embodiment provides a motor, Figure 1 is a three-dimensional diagram of a motor according to an embodiment of the present application, Figure 2 yes Figure 1 A front view of the motor is shown.

[0041] like Figure 1 As shown, the motor 1 includes a housing 10 and a stator ( Figure 1 ), and a rotor ( Figure 1 (not marked in the figure), the motor 1 may be an outer rotor motor or an inner rotor motor, which is not limited in the present embodiment. Figure 1 As shown, the rotor ( Figure 1 The motor 1 includes a rotating shaft 110, and the motor 1 also includes an eccentric wheel 20, which is mounted on the rotating shaft 110. Thus, the eccentric wheel 20 is driven to rotate by the rotating shaft 110.

[0042] Figure 3 is a stereoscopic diagram of an embodiment of an eccentric wheel of the present application. Figure 4 yes Figure 3 The top view of the eccentric wheel is shown. Figure 5 is a right side view of another embodiment of the eccentric wheel of the embodiment of the present application, Figure 6 yes Figure 5 The eccentric wheel is shown in a sectional view in the axial direction without the eccentric shaft.

[0043] like Figure 6 As shown, the eccentric wheel 20 has a main shaft hole 210 and an eccentric shaft hole 220. The main shaft hole 210 is for the rotating shaft 110 to be inserted and installed, and the eccentric shaft hole 220 is for the eccentric shaft 221 to be inserted and installed. The main shaft hole 210 and the eccentric shaft hole 220 are respectively located on both sides of the axial direction of the eccentric wheel 20.

[0044] like Figures 3 to 6 As shown, the eccentric wheel 20 further has a cutout portion 230 , which is formed by cutting out a portion of the wall 201 on the radial outer side of the eccentric wheel 20 in the circumferential direction.

[0045] Therefore, the initial dynamic balance of the eccentric wheel 20 can be adjusted through the cut-out portion 230 to suppress vibration generated when the motor is working; and the cut-out portion 230 is formed into a plane, which can be used as a positioning portion when the eccentric shaft 221 is pressed in, so that the eccentric shaft 221 is pressed in along the axial direction of the eccentric wheel 20.

[0046] In at least one embodiment, Figure 6 As shown, the eccentric wheel 20 may also have a connecting hole 240, one axial end of the connecting hole 240 is connected to the main shaft hole 210, and the other axial end of the connecting hole 240 is connected to the eccentric shaft hole 220. Therefore, by adding the connecting hole 240 structure in the eccentric wheel 20, burrs can be avoided during processing and quality risks can be eliminated. In addition, optionally, the inner diameter of the connecting hole 240 is smaller than the inner diameter of the main shaft hole 210 and the inner diameter of the eccentric shaft hole 220.

[0047] In addition, if Figures 3 to 6As shown, the eccentric wheel 20 may also have an exhaust hole 250, for example, Figure 6 As shown, the exhaust hole 250 can be communicated with the eccentric shaft hole 220, and the exhaust hole 250 can extend along the radial direction of the eccentric shaft hole 220 and communicate with the eccentric shaft hole 220. In addition, the exhaust hole 250 can also extend along the radial direction of the main shaft hole 210 and communicate with the main shaft hole 210, or the exhaust hole 250 can also extend along the radial direction of the connecting hole 240 and communicate with the connecting hole 240. Thus, the main shaft hole 210 and the eccentric shaft hole 220 in the eccentric wheel 20 are connected to the external environment through the exhaust hole 250, so that the gas in the shaft hole can be discharged when the shaft is pressed in, which facilitates the pressing in of the shaft.

[0048] In at least one embodiment, Figure 6 As shown, the central axis O2 of the main shaft hole 210 coincides with the central axis O3 of the eccentric wheel 20. This can further suppress the vibration of the motor when it is operating.

[0049] In addition, if Figure 6 As shown, the cut-out portion 230 may be located on the side of the wall 201 close to the spindle hole 210. By adjusting the circumferential position of the cut-out portion 230 and the weight of the cut-out portion, the initial dynamic balance of the eccentric wheel 20 may be adjusted.

[0050] For example, when the weight of the eccentric wheel 20 corresponding to the eccentric shaft hole 220 is greater than the weight of the eccentric shaft 221, the cutout portion 230 is located at the radially opposite side of the eccentric shaft hole 220, such as Figure 3 That is to say, when the weight of the eccentric wheel 20 reduced by the formation of the eccentric shaft hole 220 is greater than the weight of the eccentric shaft 221, the weight of the eccentric wheel 20 after the eccentric shaft 221 is installed is still smaller than the weight of the eccentric wheel 20 before the eccentric shaft hole 220 is formed. Therefore, by providing the cut-out portion 230 on the side radially opposite to the eccentric shaft hole 220, the initial dynamic balance of the eccentric wheel 20 can be corrected to the minimum.

[0051] Correspondingly, when the weight of the eccentric wheel 20 corresponding to the eccentric shaft hole 220 is less than the weight of the eccentric shaft 221, the cut-off portion 230 is located on the same radial side of the eccentric shaft hole 220, such as Figure 6 That is to say, when the weight of the eccentric wheel 20 reduced by forming the eccentric shaft hole 220 is less than the weight of the eccentric shaft 221, the weight of the eccentric wheel 20 after the eccentric shaft 221 is installed is greater than the weight of the eccentric wheel 20 before the eccentric shaft hole 220 is formed. Therefore, by providing the cut-out portion 230 on the same radial side as the eccentric shaft hole 220, the initial dynamic balance of the eccentric wheel 20 can be corrected to the minimum.

[0052] In addition, in some embodiments, the density of the material forming the eccentric wheel 20 may be close to the density of the material forming the eccentric shaft 221, so the position of the cut-out portion 230 may be determined according to the length of the eccentric shaft hole 220 and the length of the eccentric shaft 221; on the other hand, the density of the material forming the eccentric wheel 20 may be slightly greater than the density of the material forming the eccentric shaft 221, so the position of the cut-out portion 230 may be determined according to the weight corresponding to the eccentric shaft hole 220 and the weight of the eccentric shaft 221. The embodiments of the present application are not limited to this.

[0053] Figure 7 is a right side view of another embodiment of the eccentric wheel of the present application, Figure 8 yes Figure 7 The eccentric wheel is shown in a section in the axial direction without the eccentric shaft.

[0054] In at least one embodiment, Figure 7 and Figure 8 As shown, the inner wall of the main shaft hole 210 includes a first groove 211 that is recessed radially outward of the main shaft hole 210, and the first groove 211 extends along the axial direction of the main shaft hole 210; the inner wall of the eccentric shaft hole 220 includes a second groove 222 that is recessed radially outward of the eccentric shaft hole 220, and the second groove 222 extends along the axial direction of the eccentric shaft hole 220. Therefore, when the rotating shaft 110 is pressed into the main shaft hole 210, the air in the main shaft hole 210 can be discharged along the first groove 211, so that the rotating shaft 110 can be easily pressed in; when the eccentric shaft 221 is pressed into the eccentric shaft hole 220, the air in the eccentric shaft hole 220 can be discharged along the second groove 222, so that the eccentric shaft 221 can be easily pressed in.

[0055] In this example, the first groove 211 and the second groove 222 can achieve a function similar to the aforementioned exhaust hole 250, and therefore, the aforementioned exhaust hole 250 may not be provided in the eccentric wheel 20. Figure 8 As shown, an exhaust hole 250 connected to the eccentric shaft hole 220 may also be provided to accelerate the exhaust of the air in the eccentric shaft hole 220, so that the eccentric shaft 221 can be quickly pressed in. In addition, an exhaust hole 250 connected to the main shaft hole 210 may also be provided to accelerate the exhaust of the air in the main shaft hole 210, so that the rotating shaft 110 can be quickly pressed in. The embodiment of the present application is not limited to this.

[0056] According to the motor of the embodiment of the present application, the initial dynamic balance of the eccentric wheel is adjusted by partially cutting off the outer wall of the eccentric wheel, thereby suppressing the vibration generated when the motor is working; and the cut-off position can be used as a positioning portion when the eccentric shaft is pressed in, so that the eccentric shaft can be pressed in along the axial direction of the eccentric wheel.

[0057] The present application also provides an electrical product, which includes the motor described in any of the above embodiments. Since the structure of the motor has been described in detail in the above embodiments, its content is incorporated here and the description is omitted here.

[0058] The electrical product described in the embodiment of the present application may be an electric hair clipper, an electric shaver, an electric toothbrush, etc., or may be other required products, and the embodiment of the present application does not impose any limitation on this.

[0059] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The motor and electrical product of the embodiment of the present application may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

[0060] The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are 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 the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

Claims

1. A motor, comprising: chassis; a stator, which is fixed in the casing; a rotor having a rotating shaft and disposed opposite to the stator; as well as an eccentric wheel mounted on the rotating shaft, It is characterized in that The eccentric wheel has a main shaft hole for the rotating shaft to be inserted and installed and an eccentric shaft hole for the eccentric shaft to be inserted and installed, and the main shaft hole and the eccentric shaft hole are respectively located on both sides of the axial direction of the eccentric wheel. The eccentric wheel further includes a cutout portion formed by cutting out a portion of a radially outer wall of the eccentric wheel in the circumferential direction.

2. The motor according to claim 1, characterized in that The eccentric wheel also has a connecting hole, one axial end of the connecting hole is connected to the main shaft hole, and the other axial end of the connecting hole is connected to the eccentric shaft hole.

3. The motor according to claim 1, characterized in that The central axis of the main shaft hole coincides with the central axis of the eccentric wheel.

4. The motor according to claim 2, characterized in that The eccentric wheel also has an exhaust hole extending in the radial direction of the connecting hole and communicating with the connecting hole.

5. The motor according to claim 1, characterized in that The cut-off portion is located on a side of the wall close to the spindle hole, in, In the case where the weight of the eccentric wheel corresponding to the eccentric shaft hole is greater than the weight of the eccentric shaft, the cut-off portion is located on the radially opposite side of the eccentric shaft hole; In a case where the weight of the eccentric wheel corresponding to the eccentric shaft hole is less than the weight of the eccentric shaft, the cutout portion is located on the same side of the eccentric shaft hole in the radial direction.

6. The motor according to claim 2, characterized in that The inner diameter of the connecting hole is smaller than the inner diameters of the main shaft hole and the eccentric shaft hole.

7. The motor according to claim 1, characterized in that The inner wall of the spindle hole comprises a first groove recessed toward the radial outer side of the spindle hole, and the first groove extends along the axial direction of the spindle hole; The inner wall of the eccentric shaft hole comprises a second groove recessed toward the radial outer side of the eccentric shaft hole, and the second groove extends along the axial direction of the eccentric shaft hole.

8. The motor according to claim 1 or 7, characterized in that: The eccentric wheel further comprises an exhaust hole extending in a radial direction of the main shaft hole and communicating with the main shaft hole or an exhaust hole extending in a radial direction of the eccentric shaft hole and communicating with the eccentric shaft hole.

9. An electrical product, characterized in that: The electrical product comprises the motor according to any one of claims 1 to 8.

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