Buffer element, motor assembly and household appliance

Abstract

The utility model discloses a buffer element, a motor assembly and a household electrical appliance, and belongs to the technical field of household electrical appliances. The buffering element is used for being connected with a mounting lug of a motor, the buffering element comprises a main body part, the main body part is configured to be of a flexible structure and is provided with a first surface, a second surface, a third surface and a fourth surface, the first surface and the second surface are opposite in the first direction, the third surface and the fourth surface are opposite in the second direction, and the first direction is perpendicular to the second direction; the first surface of the main body part is provided with a mounting groove, the mounting groove is spaced from the second surface, the third surface and the fourth surface by a preset distance, and the mounting groove is used for accommodating the mounting lugs. According to the utility model, the buffer element can be connected with the mounting lug of the motor so as to reduce the vibration noise of the motor assembly and improve the sound quality of the whole machine.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a buffer element, a motor assembly and a household appliance. Background Art

[0002] In the related art, during the operation of the motor, vibrations are generated. When the motor is applied to a household appliance, the vibrations of the motor will generate relatively large noises, and the vibration excitation of the motor will be transmitted to the household appliance, resulting in a further increase in noise. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0004] To this end, an object of the utility model is to provide a buffer element, which can reduce the vibration noise of the motor assembly and improve the sound quality of the whole machine.

[0005] Another object of the utility model is to provide a motor assembly, which includes the aforementioned buffer element.

[0006] Another object of the utility model is to provide a household appliance, which includes the aforementioned motor assembly.

[0007] According to the buffer element of the embodiment of the utility model, it is used to connect the mounting ear of the motor. The buffer element includes a main body portion, and the main body portion is configured as a flexible structure and has a first surface, a second surface, a third surface and a fourth surface. The first surface and the second surface are opposite to each other along a first direction, the third surface and the fourth surface are opposite to each other along a second direction, the first direction and the second direction are perpendicular, and a mounting groove is provided on the first surface of the main body portion. The mounting groove is spaced apart from the second surface, the third surface and the fourth surface by a predetermined distance, and the mounting groove is used to accommodate the mounting ear.

[0008] According to the buffer element of the embodiment of the utility model, the buffer element can be connected to the mounting ear of the motor to reduce the vibration noise of the motor assembly and improve the sound quality of the whole machine.

[0009] In addition, according to the buffer element of the above embodiment of the utility model, the following additional technical features may also be provided:

[0010] Optionally, the buffer element further includes a flexible convex portion, and the flexible convex portion is provided on at least one of the third surface and the fourth surface.

[0011] Optionally, the flexible convex portion includes a convex platform and a plurality of ribs. The convex platform has a buffer surface facing away from the main body portion, and the plurality of ribs are spaced apart on the buffer surface.

[0012] Optionally, a plurality of buffer grooves are spaced on the second surface.

[0013] Optionally, the main body portion further has buffer holes, and the buffer holes penetrate through the first surface and the second surface along the first direction.

[0014] Optionally, the main body portion is configured as a long strip extending along the third direction, the buffer holes are provided on at least one side of the installation groove along the third direction, and the third direction is perpendicular to the first direction and the second direction respectively.

[0015] Optionally, in the projection along the second direction, the ratio of the projection area S1 of the flexible convex portion to the projection area S2 of the corresponding surface is not less than 0.25 and not greater than 0.75.

[0016] Optionally, the main body portion and the flexible convex portion are configured as an integral structure made of rubber or silica gel.

[0017] Optionally, in the projection along the first direction, the ratio of the total projection area S3 of the plurality of buffer grooves to the projection area S4 of the second surface is not less than 0.25 and not greater than 0.75.

[0018] Optionally, the main body portion further has a fifth surface and a sixth surface, the fifth surface and the sixth surface are opposite to each other along the third direction, and the installation groove is spaced apart from the fifth surface and the sixth surface by a predetermined distance.

[0019] According to the motor assembly of the embodiment of the present utility model, the motor assembly includes a stator, a rotor, and the buffer element as described above, the stator is provided with mounting ears, the rotor is rotatably connected to the stator, and the buffer element is connected to the mounting ears.

[0020] According to the motor assembly of the embodiment of the present utility model, by applying the foregoing buffer element, the vibration noise of the motor assembly can be reduced, and good support performance can be provided for the stator in the motor assembly to improve the working stability of the motor assembly.

[0021] Optionally, the motor assembly further includes a mounting bracket, the mounting bracket is provided with a mounting portion, and the mounting portion is in interference fit with the buffer element for limiting the stator.

[0022] Optionally, there are a plurality of the mounting ears, and the plurality of mounting ears are arranged around the circumference of the stator and are correspondingly connected with the buffer elements.

[0023] According to the household appliance of the embodiment of the present utility model, the household appliance includes the foregoing motor assembly.

[0024] According to the household appliance of the embodiment of the present utility model, by applying the aforementioned motor assembly, the noise of the household appliance can be reduced and the user experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. 6 is a side view of a buffer element in some embodiments of the present utility model.

[0026] Figure 2 FIG. 7 is a side view of the other side of the buffer element in some embodiments of the present utility model.

[0027] Figure 3 FIG. 8 is a rear view of the buffer element in some embodiments of the present utility model.

[0028] Figure 4 FIG. 9 is a front view of the buffer element in some embodiments of the present utility model.

[0029] Figure 5 FIG. 10 is a top view of the buffer element in some embodiments of the present utility model.

[0030] Figure 6 FIG. 11 is a bottom view of the buffer element in some embodiments of the present utility model.

[0031] Figure 7 FIG. 12 is a side view of the buffer element in some embodiments of the present utility model.

[0032] Figure 8 FIG. 13 is a schematic diagram of a mounting bracket in some embodiments of the present utility model.

[0033] Figure 9 FIG. 14 is an exploded view of the motor assembly in some embodiments of the present utility model.

[0034] Figure 10 FIG. 15 is a simple schematic diagram of the buffer element projected along the axial direction of the motor in some embodiments of the present utility model.

[0035] Figure 11 FIG. 16 is a simple schematic diagram of the buffer element projected along the radial direction of the motor in some embodiments of the present utility model.

[0036] REFERENCE SIGNS:

[0037] Motor assembly 100, buffer element 10, main body portion 11, first surface 111, mounting groove 1111, second surface 112, buffer groove 1121, third surface 113, fourth surface 114, fifth surface 115, sixth surface 116, flexible convex portion 12, boss 121, rib 122, buffer hole 13, stator 20, mounting ear 21, rotor 30, mounting bracket 40, mounting portion 41, circumferential direction A - A of the motor, axial direction B - B of the motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0039] The present utility model provides a buffer element 10, a motor assembly 100, and a household appliance. The buffer element 10 can reduce the vibration noise of the motor assembly 100 and improve the sound quality of the whole machine.

[0040] Referring to Figures 1 to 9 , the buffer element 10 according to an embodiment of the present utility model is used to connect the mounting ear 21 of the motor. The buffer element 10 includes a main body portion 11 configured as a flexible structure and having a first surface 111, a second surface 112, a third surface 113, and a fourth surface 114. The first surface 111 and the second surface 112 are opposite to each other in a first direction, the third surface 113 and the fourth surface 114 are opposite to each other in a second direction, and the first direction and the second direction are perpendicular. An installation groove 1111 is provided on the first surface 111 of the main body portion 11. The installation groove 1111 is spaced apart from the second surface 112, the third surface 113, and the fourth surface 114 by a predetermined distance. The installation groove 1111 is used to accommodate the mounting ear 21; in this way, the vibration noise of the motor assembly 100 can be reduced to improve the sound quality of the whole machine.

[0041] Specifically, the motor assembly 100 includes a motor and a buffer element 10. The motor includes a stator 20 and a rotor 30. A mounting ear 21 is provided on the stator 20. The mounting groove 1111 of the main body portion 11 can accommodate the mounting ear 21, so that the buffer element 10 is mounted on the stator 20. The installation groove 1111 is opened on the first surface 111 of the buffer element 10 and is spaced apart from the second surface 112, the third surface 113, and the fourth surface 114 by a predetermined distance; when the motor assembly 100 is applied to household appliances such as the indoor unit of an air conditioner, the second surface 112, the third surface 113, and the fourth surface 114 of the main body portion 11 can be connected to other structural members, and the noise generated by the motor can be absorbed by the flexible buffer element 10, so as to isolate the excitation of the motor in the first direction and the second direction and improve the sound quality of the whole machine; for example, the second surface 112 of the main body portion 11 is supported on an external structural member. When the motor is working, the flexible buffer element 10 can absorb the vibration by being spaced apart from the second surface 112 by a predetermined distance through the installation groove 1111 to avoid the transmission of noise.

[0042] In addition, it should be supplemented and explained that the buffer element 10 in some embodiments of the present utility model is configured as a flexible structure. Among them, the Shore hardness HS of the buffer element 10 may not be greater than 50. Preferably, the Shore hardness HS of the buffer element 10 is not less than 30 and not greater than 40. For example, the Shore hardness of the buffer element 10 may be 30, 35, 40, 45, 50; so as to provide good support strength for the motor while realizing the buffering and energy absorption of the buffer element 10 and improve the working stability of the motor.

[0043] Therefore, according to the buffer element 10 of the embodiment of the present utility model, the buffer element 10 can be connected to the mounting ear 21 of the motor to reduce the vibration noise of the motor assembly 100 and improve the overall sound quality.

[0044] Among them, in some embodiments, the first direction is the radial direction of the motor, and the second direction is the axial direction of the motor. Of course, according to the actual situation, the first direction may also be the axial direction of the motor, and the second direction may also be the radial direction of the motor; for those that implement the technical solution of the present utility model by changing the direction, it is still within the protection scope of the present utility model. In addition, for the convenience of understanding, unless otherwise specified, the following description will be made with the first direction being the radial direction of the motor and the second direction being the axial direction of the motor.

[0045] Refer to Figures 1 to 7 In some embodiments of the present utility model, the buffer element 10 further includes a flexible convex portion 12, and the flexible convex portion 12 is provided on at least one of the third surface 113 and the fourth surface 114 to further reduce the vibration noise of the motor assembly 100.

[0046] Among them, the flexible convex portion 12 may be provided on the third surface 113; or, the flexible convex portion 12 may be provided on the fourth surface 114; or, the flexible convex portion 12 is provided on both the third surface 113 and the fourth surface 114. For the convenience of description, the following will take the case where the flexible convex portion 12 is provided on both the third surface 113 and the fourth surface 114 as an example for explanation.

[0047] Optionally, the flexible convex portion 12 includes a first flexible convex portion 12 and a second flexible convex portion 12. The first flexible convex portion 12 is provided on the third surface 113 and protrudes relative to the third surface 113, and the second flexible convex portion 12 is provided on the fourth surface 114 and protrudes relative to the fourth surface 114; the first flexible convex portion 12 can be connected to the structural member outside the motor, and the second flexible convex portion 12 can be connected to the structural member outside the motor. When the motor is working, the first flexible convex portion 12 can undergo elastic deformation to absorb the vibration generated by the motor, and the second flexible convex portion 12 can undergo elastic deformation to absorb the vibration generated by the motor, thereby isolating the vibration excitation generated by the motor and preventing the vibration from being transmitted to other structural members.

[0048] Refer to Figures 1 to 7, in some embodiments of the present utility model, the flexible convex portion 12 includes a boss 121, and the boss 121 has a buffer surface facing away from the main body portion 11. The buffer surface is used to support the motor on the external structural member. When the motor generates vibration, the motor and the external structural member squeeze the boss 121, and the vibration is absorbed through the elastic deformation of the boss 121, thereby absorbing the vibration of the motor and isolating the vibration excitation of the motor.

[0049] Furthermore, the flexible convex portion 12 further includes a plurality of ribs 122. The plurality of ribs 122 are spaced on the buffer surface. It can be understood that the plurality of ribs 122 are spaced and arranged on the buffer surface; specifically, the plurality of ribs 122 are used to support the motor on the external structural member. When the motor generates vibration, the motor and the external structural member can squeeze the ribs 122 and the boss 121, and the vibration is absorbed through the elastic deformation of the ribs 122 and the boss 121, thereby isolating the vibration excitation of the motor.

[0050] In addition, according to the foregoing, specifically, the plurality of ribs 122 are arranged along the circumferential direction of the motor and extend along the radial direction of the motor; it can be understood that the vibration absorption effect of the flexible convex portion 12 can be improved through the plurality of ribs 122, thereby further isolating the vibration excitation generated by the motor, and the plurality of ribs 122 extend along the radial direction of the motor, which can improve the support strength of the motor in the radial direction. While improving the buffering performance, the motor has good support performance in the radial direction, improving the working stability of the motor. Similarly, unless otherwise specified, the following description will be made with the third direction as the circumferential direction of the motor.

[0051] Refer to Figure 1 to the figures. In some embodiments of the present utility model, a plurality of buffer grooves 1121 are spaced on the second surface 112. It can be understood that the plurality of buffer grooves 1121 are spaced and arranged on the second surface 112; specifically, the motor can be supported on the external structural member through the second surface 112 of the buffer element 10. When the motor generates vibration, the plurality of buffer grooves 1121 on the second surface 112 can provide a space for elastic deformation of the buffer element 10, so that the buffer element 10 absorbs the vibration generated by the motor through elastic deformation, thereby isolating the vibration excitation of the motor from the external structural member and improving the overall sound quality.

[0052] In addition, the plurality of buffer grooves 1121 extend along the second direction and are arranged along the third direction. The third direction is perpendicular to the first direction and the second direction respectively. Combining the foregoing, the plurality of buffer grooves 1121 extend along the axial direction of the motor and are arranged along the circumferential direction of the motor. In this way, the plurality of buffer grooves 1121 can improve the buffering performance while enabling the motor to have good support performance in the axial direction, improving the working stability of the motor.

[0053] Refer to Figures 1 to 4 , Figure 7, in some embodiments of the present utility model, the main body portion 11 is further provided with a buffer hole 13, and the buffer hole 13 penetrates through the first surface 111 and the second surface 112 along the first direction; specifically, as described above, the buffer hole 13 penetrates through the first surface 111 and the second surface 112 along the radial direction of the motor; when the motor generates vibrations transmitted in the circumferential direction, the buffer hole 13 can provide space for the elastic deformation of the buffer element 10, so that the vibrations of the motor in the circumferential direction can be absorbed by the buffer element 10, thereby reducing the vibration noise generated by the motor.

[0054] Further, referring to Figures 1 to 4 , Figure 7 , in some embodiments of the present utility model, the main body portion 11 is configured as a long strip extending along the third direction, and the buffer hole 13 is provided on at least one side of the installation groove 1111 along the third direction, and the third direction is perpendicular to the first direction and the second direction respectively; wherein, as described above, the main body portion 11 extends along the circumferential direction of the motor, and the buffer hole 13 is provided on at least one side of the installation groove 1111 along the circumferential direction of the motor. In this way, when the motor generates vibrations, the motor and the external structural members can squeeze the buffer element 10, and the buffer element 10 can absorb the vibrations through the deformation of the buffer hole 13 between the motor and the external structural members, so as to further improve the noise reduction effect of the buffer element 10; optionally, buffer holes 13 are respectively provided on opposite sides of the installation groove 1111 along the circumferential direction of the motor. When the motor vibrates, the buffer holes 13 can provide space for the elastic deformation of the buffer element 10, so that the buffer element 10 absorbs the vibrations generated by the motor.

[0055] Referring to Figure 10 , in some embodiments of the present utility model, in the projection along the second direction, the ratio of the projected area S1 of the flexible convex portion 12 to the projected area S2 of the corresponding surface is not less than 0.25 and not greater than 0.75; with such a setting, the buffer performance and the supporting performance of the buffer element 10 can be taken into account, thereby improving the working stability of the motor.

[0056] Specifically, the first flexible convex portion 12 is provided on the third surface 113; in the projection along the second direction, the ratio of the projected area of the first flexible convex portion 12 to the projected area of the third surface 113 is not less than 0.25 and not greater than 0.75, wherein this ratio can be 0.25, 0.5, 0.75. The second flexible convex portion 12 is provided on the fourth surface 114, and in the projection along the second direction, the ratio of the projected area of the second flexible convex portion 12 to the projected area of the fourth surface 114 is not less than 0.25 and not greater than 0.75, wherein this ratio can be 0.25, 0.5, 0.75. Combining the above, the ratio of the projected area S1 of the flexible convex portion 12 to the projected area S2 of the corresponding surface is not less than 0.25 and not greater than 0.75, so as to provide good support strength for the motor while realizing the buffer energy absorption of the buffer element 10 and improving the working stability of the motor.

[0057] According to the foregoing, it can be understood that in the design of the buffer element 10, there is a contradiction between the buffering performance and the supporting performance of the buffer element 10, that is, if the buffering performance is high, the supporting performance is low; if the supporting performance is high, the buffering performance is low. Taking the example that the first flexible convex portion 12 is provided on the third surface 113, if in the projection along the second direction, the ratio of the projection area of the first flexible convex portion 12 to the projection area of the third surface 113 is greater than 0.75, the supporting performance of the buffer element 10 for the motor is enhanced, but the buffering performance of the buffer element 10 for the motor is weakened; if in the projection along the second direction, the ratio of the projection area of the first flexible convex portion 12 to the projection area of the third surface 113 is less than 0.25, the buffering performance of the buffer element 10 for the motor is enhanced, but the supporting performance of the buffer element 10 for the motor is weakened. Therefore, the ratio of the projection area S1 of the flexible convex portion 12 to the projection area S2 of the corresponding surface can be made not less than 0.25 and not greater than 0.75, so as to balance the buffering performance and the supporting performance of the buffer element 10, thereby improving the working stability of the motor.

[0058] In some embodiments of the present invention, the main body portion 11 and the flexible convex portion 12 are configured as an integral structure made of rubber or silica gel. Such a setting can improve the structural strength of the buffer element 10, provide good supporting performance for the motor, and since the buffer element 10 is made of rubber or silica gel, it can provide good buffering performance for the motor to isolate the vibration excitation of the motor.

[0059] Refer to Figure 11 , in some embodiments of the present invention, in the projection along the first direction, the ratio of the total projection area S3 of the plurality of buffer grooves 1121 to the projection area S4 of the second surface 112 is not less than 0.25 and not greater than 0.75; such a setting can balance the buffering performance and the supporting performance of the buffer element 10, thereby improving the working stability of the motor.

[0060] Specifically, in the projection along the first direction, the ratio of the total projection area S3 of the plurality of buffer grooves 1121 to the projection area S4 of the second surface 112 is not less than 0.25 and not greater than 0.75, wherein this ratio can be 0.25, 0.5, 0.75; in combination with the foregoing, the plurality of buffer grooves 1121 on the second surface 112 can provide a space for elastic deformation of the buffer element 10, so that the buffer element 10 absorbs the vibration of the motor, but in order to make the buffer element 10 have a certain supporting strength, it is necessary to make the ratio of the total projection area S3 of the plurality of buffer grooves 1121 to the projection area S4 of the second surface 112 not less than 0.25; and in order to ensure the buffering performance of the buffer element, the ratio of the total projection area S3 of the plurality of buffer grooves 1121 to the projection area S4 of the second surface 112 is not greater than 0.75, whereby the buffer element 10 can balance the buffering performance and the supporting performance, thereby improving the working stability of the motor.

[0061] Referring to Figures 1 to 7 , in some embodiments of the present utility model, the main body portion 11 further has a fifth surface 115 and a sixth surface 116. The fifth surface 115 and the sixth surface 116 are opposite to each other along the third direction, and the mounting groove 1111 is spaced apart from the fifth surface 115 and the sixth surface 116 by a predetermined distance. Specifically, when the motor assembly 100 is applied to household appliances such as the indoor unit of an air conditioner, the fifth surface 115 and the sixth surface 116 of the main body portion 11 can be connected to other structural members, and the fifth surface 115 and the sixth surface 116 of the main body portion 11 are spaced apart from the mounting groove 1111 by a predetermined distance. When the motor vibrates, the portion of the main body portion 11 between the mounting groove 1111 and the fifth surface 115 and the sixth surface 116 will undergo elastic deformation, thereby absorbing the vibration generated by the motor to avoid the transmission of noise.

[0062] Referring to Figures 1 to 9 , according to the motor assembly 100 of the embodiments of the present utility model, the motor assembly 100 includes a stator 20, a rotor 30, and the buffer element 10 in the above embodiments. The stator 20 is provided with mounting ears 21. The rotor 30 is rotatably connected to the stator 20. The buffer element 10 is connected to the mounting ears 21. By applying the buffer element 10 of the foregoing embodiments, the vibration noise of the motor assembly 100 can be reduced, and good support performance can be provided for the stator 20 in the motor assembly 100 to improve the working stability of the motor assembly 100.

[0063] Specifically, the buffer element 10 includes a main body portion 11 and a flexible convex portion 12. The main body portion 11 has a first surface 111, a second surface 112, a third surface 113, a fourth surface 114, a fifth surface 115, and a sixth surface 116. The first surface 111 and the second surface 112 are opposite to each other along the radial direction of the motor. The third surface 113 and the fourth surface 114 are opposite to each other along the axial direction of the motor. The fifth surface 115 and the sixth surface 116 are opposite to each other along the circumferential direction of the motor. And the mounting groove 1111 is provided on the first surface 111 of the main body portion 11. The mounting groove 1111 can be engaged with the mounting ears 21 of the stator 20. The mounting groove 1111 is spaced apart from the second surface 112, the third surface 113, the fourth surface 114, the fifth surface 115, and the sixth surface 116 by a predetermined distance. In this way, the motor can be connected to external structural members through the surface of the buffer element 10, and when the motor is working, the portion between the surface of the buffer element 10 and the mounting groove 1111 will undergo elastic deformation, thereby absorbing the vibration generated by the motor to isolate the vibration excitation of the motor.

[0064] In addition, the flexible convex portion 12 includes a boss 121 and a plurality of ribs 122. The boss 121 is disposed on at least one of the third surface 113 and the fourth surface 114, and the ribs 122 are disposed on the buffer surface of the boss 121 facing away from the main body portion 11. When the motor is operating, the boss 121 and the plurality of ribs 122 can undergo elastic deformation, thereby absorbing the vibration generated by the motor; and the plurality of ribs 122 extend along the radial direction of the motor, enabling the motor to have good support performance in the radial direction.

[0065] Further, taking the flexible convex portion 12 being disposed on the third surface 113 as an example, in the projection along the second direction, the ratio of the projected area S1 of the flexible convex portion 12 to the projected area S2 of the third surface 113 is not less than 0.25 and not greater than 0.75, so as to balance the buffering performance and the support performance of the motor.

[0066] In addition, a plurality of buffer grooves 1121 are provided on the second surface 112. The plurality of buffer grooves 1121 can provide a space for elastic deformation of the buffer element, so that the buffer element 10 absorbs the vibration of the motor through elastic deformation; in addition, in the projection along the first direction, the ratio of the total projected area S3 of the plurality of buffer grooves 1121 to the projected area S4 of the second surface 112 is not less than 0.25 and not greater than 0.75, so that the buffer element 10 balances the buffering performance and the support performance of the motor.

[0067] Furthermore, the main body portion 11 is further provided with buffer holes 13. The buffer holes 13 penetrate through the first surface 111 and the second surface 112 along the radial direction of the motor, and the buffer holes 13 are respectively disposed on opposite sides of the mounting groove 1111 along the circumferential direction of the motor, so as to provide a space for elastic deformation of the buffer element 10, thereby absorbing the vibration generated by the motor.

[0068] Refer to Figure 8 and Figure 9 , in some embodiments of the present utility model, the motor assembly 100 further includes a mounting bracket 40. The mounting bracket 40 is provided with a mounting portion 41. The mounting portion 41 is in interference fit with the buffer element 10 and is used to limit the stator 20 to achieve the assembly of the motor assembly 100.

[0069] Specifically, the mounting bracket 40 can be mounted on the outside of the motor. The mounting ear 21 of the stator 20 of the motor is connected with a buffer element 10. The buffer element 10 can be interference-fitted into the mounting portion 41 of the mounting bracket 40, thereby mounting the motor on the mounting bracket 40. When the motor is operating, the vibration generated by the motor can be isolated through the buffer element 10 between the mounting bracket 40 and the motor.

[0070] Refer to Figure 8 and Figure 9, in some embodiments of the present utility model, there may be multiple mounting ears 21. The multiple mounting ears 21 are arranged circumferentially around the stator 20 and are correspondingly connected to the buffer elements 10, so as to further reduce the noise generated by the motor.

[0071] Specifically, the mounting bracket 40 may be provided with multiple mounting parts 41. The multiple mounting parts 41 are arranged circumferentially around the motor. The stator 20 is provided with multiple mounting ears 21 circumferentially around the motor. The multiple mounting ears 21 may be respectively connected to the buffer elements 10. The buffer elements 10 may be embedded with the corresponding mounting parts 41, so as to realize the mounting of the motor on the mounting bracket 40. And through the multiple buffer elements 10, the noise generated by the motor can be greatly reduced.

[0072] For the household appliance according to the embodiment of the present utility model, by applying the motor assembly 100 of the foregoing embodiment, the noise of the household appliance can be reduced and the user experience can be improved.

[0073] In the related art, in order to isolate the excitation on the motor rotor side in the indoor unit of the air conditioner, the impeller mainly involves a damping impeller; in order to isolate the excitation on the motor stator side, a buffer element 100 is designed on the motor mounting feet. The buffer element 100 needs to take into account both the support and damping characteristics, and there are certain contradictions in their designs. Based on the above background, there is an urgent need to optimize the structure of the buffer element 100 to meet the dual design requirements of vibration isolation and support.

[0074] Therefore, the present utility model proposes a buffer element 10, as well as a motor and a household appliance applying the buffer element 10, which can solve the problems of low-frequency electromagnetic noise of the indoor unit of an air conditioner and the overall machine drop. By using the buffer element 10 in the embodiment of the present utility model, the low-frequency electromagnetic noise of the overall machine is reduced by about 10 dB, improving the sound quality of the overall machine, and the overall machine drop meets the requirements. A buffer element 10, which is a quasi-annular hexahedron (i.e., the main body 11), with bosses 121 and a plurality of ribs 122 provided on the upper and lower surfaces, and an installation groove 1111 and buffer holes 13 are provided, and the left and right surfaces are flat surfaces (i.e., the fifth surface 115 and the sixth surface 116); the upper surface (the third surface 113) and the lower surface (i.e., the fourth surface 114) of the hexahedron. In addition, the area of the boss 121 provided accounts for 1 / 4 to 3 / 4 of the upper or lower surface, and the boss 121 is provided with ribs 122 along the radial direction, and the number of ribs 122 is not less than 3; a plurality of buffer grooves 1121 are provided on the rear surface (i.e., the second surface 112) of the hexahedron, and the buffer grooves 1121 are distributed along the circumferential direction of the motor, and the total area of the plurality of buffer grooves 1121 accounts for 1 / 4 to 3 / 4 of the rear surface (i.e., the second surface 112); a mounting groove 1111 and two buffer holes 13 are provided on the front surface (i.e., the first surface 111) of the hexahedron, the mounting groove 1111 is used to cooperate with the motor mounting ear 21, and the two buffer holes 13 on both sides penetrate the front and rear surfaces; the hardness of the buffer element 10 is less than HS50, and the material is rubber. The beneficial effect of the buffer element 10 in the embodiment of the present utility model is that: when cooperating with the motor stator 20, it not only ensures the support stiffness of the motor in the axial, radial and circumferential directions, but also greatly improves the vibration isolation performance of the rubber pad in the three directions, effectively suppressing the low-frequency electromagnetic noise of the DC motor, improving the overall machine noise, and enhancing the sound quality of the overall machine.

[0075] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0076] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0077] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "coupling", "fixing", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0078] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0079] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0080] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A buffer element (10) for connecting to a mounting ear (21) of a motor, characterized in that: The invention comprises a main body (11), wherein the main body (11) is configured as a flexible structure and has a first surface (111), a second surface (112), a third surface (113) and a fourth surface (114), wherein the first surface (111) and the second surface (112) are opposite to each other along a first direction, the third surface (113) and the fourth surface (114) are opposite to each other along a second direction, and the first direction and the second direction are perpendicular to each other. The first surface (111) of the main body (11) is provided with a mounting groove (1111), the mounting groove (1111) is spaced apart from the second surface (112), the third surface (113) and the fourth surface (114) by a predetermined distance, and the mounting groove (1111) is used to accommodate a mounting ear (21).

2. The cushioning element (10) according to claim 1, characterized in that It also includes a flexible protrusion (12), wherein the flexible protrusion (12) is provided on at least one of the third surface (113) and the fourth surface (114).

3. The cushioning element (10) according to claim 2, characterized in that The flexible protrusion (12) comprises a boss (121) and a plurality of ribs (122); the boss (121) has a buffer surface facing away from the main body (11); and the plurality of ribs (122) are arranged at intervals on the buffer surface.

4. The cushioning element (10) according to claim 1, characterized in that The second surface (112) is provided with a plurality of buffer grooves (1121) at intervals.

5. The cushioning element (10) according to claim 1, characterized in that The main body (11) is further provided with a buffer hole (13), and the buffer hole (13) penetrates the first surface (111) and the second surface (112) along a first direction.

6. The cushioning element (10) according to claim 5, characterized in that The main body (11) is configured as a long strip extending along a third direction, and the buffer hole (13) is provided on at least one side of the mounting groove (1111) along the third direction, and the third direction is respectively perpendicular to the first direction and the second direction.

7. The cushioning element (10) according to claim 2, characterized in that In the projection along the second direction, the ratio of the projection area S1 of the flexible protrusion (12) to the projection area S2 of the corresponding surface is not less than 0.25 and not more than 0.75; And / or, the main body (11) and the flexible protrusion (12) are configured as an integral structure made of rubber or silicone.

8. The cushioning element (10) according to claim 4, characterized in that In the projection along the first direction, the ratio of the total projection area S3 of the plurality of buffer grooves (1121) to the projection area S4 of the second surface (112) is not less than 0.25 and not more than 0.

75.

9. The cushioning element (10) according to claim 1, characterized in that The main body (11) further comprises a fifth surface (115) and a sixth surface (116), wherein the fifth surface (115) and the sixth surface (116) are opposite to each other along a third direction, and the mounting groove (1111) is spaced apart from the fifth surface (115) and the sixth surface (116) by a predetermined distance.

10. A motor assembly, characterized in that: include: A stator (20), wherein the stator (20) is provided with a mounting ear (21); a rotor (30), the rotor (30) being rotatably connected to the stator (20); The buffer element (10) according to any one of claims 1 to 9, wherein the buffer element (10) is connected to the mounting ear (21).

11. The motor assembly according to claim 10, characterized in that It also includes a mounting bracket (40), wherein the mounting bracket (40) is provided with a mounting portion (41), and the mounting portion (41) is engaged with the buffer element (10) and is used to limit the position of the stator (20); And / or, the mounting ears (21) include a plurality of mounting ears (21), the plurality of mounting ears (21) are arranged around the circumference of the stator (20), and are correspondingly connected to the buffer elements (10).

12. A household appliance, characterized in that: A motor assembly comprising any one of claims 10-11.

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