Disclosure of utility model
The present utility model aims to solve at least one of the technical problems in the related art to some extent.
Therefore, an object of the present 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.
Another object of the utility model is to propose a motor assembly comprising a damping element as described above.
A further object of the present utility model is to propose a household appliance comprising the aforementioned motor assembly.
According to the buffer element for connecting the mounting lug of the motor, the buffer element comprises a main body part, the main body part is configured into a flexible structure and is provided with a first surface, a second surface, a third surface and a fourth surface, the first surface is opposite to the second surface along a first direction, the third surface is opposite to the fourth surface along a second direction, the first direction is perpendicular to the second direction, the first surface of the main body part is provided with a mounting groove, and the mounting groove is separated from the second surface, the third surface and the fourth surface by a preset distance and is used for accommodating the mounting lug.
According to the buffer element provided by the embodiment of the utility model, the buffer element can be connected with the mounting lug of the motor so as to reduce vibration noise of a motor assembly and improve the sound quality of the whole machine.
In addition, the cushioning element according to the above-described embodiment of the present utility model may have the following additional technical features:
optionally, the cushioning element further comprises a flexible protrusion provided on at least one of the third surface and the fourth surface.
Optionally, the flexible protruding portion includes a boss and a plurality of ribs, the boss has a back to the buffer surface of main part, a plurality of ribs interval locate the buffer surface.
Optionally, a plurality of buffer grooves are formed on the second surface at intervals.
Optionally, the main body portion is further provided with a buffer hole penetrating the first surface and the second surface in the first direction.
Optionally, the main body portion is configured as an elongated shape extending along a third direction, and the buffer hole is provided on at least one side of the mounting groove along the third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.
Optionally, in the projection along the second direction, a ratio of a projection area S1 of the flexible protrusion to a projection area S2 corresponding to the surface is not less than 0.25 and not more than 0.75.
Alternatively, the main body portion and the flexible protrusion are configured as a unitary structure made of rubber or silicone.
Optionally, in the projection along the first direction, a ratio of a total projected area S3 of the plurality of buffer grooves to a projected area S4 of the second surface is not less than 0.25 and not more than 0.75.
Optionally, the main body portion further has a fifth surface and a sixth surface, the fifth surface and the sixth surface being opposite in a third direction, and the mounting groove being spaced apart from the fifth surface and the sixth surface by a predetermined distance.
According to the motor assembly provided by the embodiment of the utility model, the motor assembly comprises a stator, a rotor and the buffer element, wherein the stator is provided with a mounting lug, the rotor is rotationally connected with the stator, and the buffer element is connected with the mounting lug.
According to the motor assembly provided by the embodiment of the utility model, through the application of the buffer element, the vibration noise of the motor assembly can be reduced, and good supporting performance is provided for the stator in the motor assembly, so that the working stability of the motor assembly is improved.
Optionally, the motor assembly further comprises a mounting bracket, wherein the mounting bracket is provided with a mounting part, and the mounting part is in scarf joint with the buffer element and is used for limiting the stator.
Optionally, the mounting ears include a plurality of mounting ears, and the plurality of mounting ears are arranged around the circumference of the stator and correspondingly connected with the buffer element.
According to an embodiment of the utility model, the household appliance comprises the motor assembly.
According to the household appliance provided by the embodiment of the utility model, through the application of the motor assembly, the noise of the household appliance can be reduced, and the use experience of a user is improved.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The utility model provides a buffer element 10, a motor assembly 100 and a household appliance, wherein the buffer element 10 can reduce vibration noise of the motor assembly 100 and improve sound quality of the whole machine.
Referring to fig. 1 to 9, according to the buffer member 10 for connecting the mounting lug 21 of the motor according to the embodiment of the present utility model, the buffer member 10 includes a body 11, the 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, the first surface 111 and the second surface 112 are opposite in a first direction, the third surface 113 and the fourth surface 114 are opposite in a second direction, the first direction is perpendicular to the second direction, the first surface 111 of the 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 for accommodating the mounting lug 21, so that vibration noise of the motor assembly 100 can be reduced to improve the overall sound quality.
Specifically, the motor assembly 100 includes a motor and a damper member 10, the motor includes a stator 20 and a rotor 30, the stator 20 is provided with a mounting lug 21, a mounting groove 1111 of a main body 11 can accommodate the mounting lug 21 to mount the damper member 10 on the stator 20, wherein the mounting groove 1111 is opened at a first surface 111 of the damper member 10 and is spaced apart from a second surface 112, a third surface 113 and a fourth surface 114 by a predetermined distance, when the motor assembly 100 is applied to a home appliance such as an air conditioner, the second surface 112, the third surface 113 and the fourth surface 114 of the main body 11 can be connected with other structural members and absorb noise generated from the motor by the damper member 10 of a flexible structure, thereby isolating excitation of the motor in a first direction and a second direction and improving sound quality of the whole machine, for example, the second surface 112 of the main body 11 is supported on an external structural member, and the flexible damper member 10 can absorb vibration by spacing the mounting groove 1111 from the second surface 112 by a predetermined distance when the motor is in operation to avoid transmission of noise.
In addition, it should be noted that, in some embodiments of the present utility model, the buffer element 10 is configured to be a flexible structure, where the shore hardness HS of the buffer element 10 may be not 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 supporting strength for the motor and improve the working stability of the motor while the buffer element 10 absorbs energy.
Therefore, according to the buffer element 10 of the embodiment of the present utility model, the buffer element 10 can be connected with the mounting ear 21 of the motor to reduce the vibration noise of the motor assembly 100, so as to improve the sound quality of the whole machine.
In some embodiments, the first direction is a radial direction of the motor, the second direction is an axial direction of the motor, and of course, the first direction may be an axial direction of the motor, and the second direction may be a radial direction of the motor according to practical situations.
Referring to fig. 1-7, in some embodiments of the present utility model, the cushioning element 10 further includes a flexible protrusion 12, the flexible protrusion 12 being provided on at least one of the third surface 113 and the fourth surface 114 to further reduce vibration noise of the motor assembly 100.
Wherein the third surface 113 may be provided with flexible protrusions 12, or the fourth surface 114 may be provided with flexible protrusions 12, or both the third surface 113 and the fourth surface 114 may be provided with flexible protrusions 12. For convenience of description, the following description will be given by taking an example in which the third surface 113 and the fourth surface 114 are each provided with the flexible convex portion 12.
Optionally, the flexible convex part 12 comprises a first flexible convex part 12 and a second flexible convex part 12, the first flexible convex part 12 is arranged on the third surface 113 and protrudes relative to the third surface 113, the second flexible convex part 12 is arranged on the fourth surface 114 and protrudes relative to the fourth surface 114, the first flexible convex part 12 can be connected with a structural part outside the motor, the second flexible convex part 12 can be connected with the structural part outside the motor, when the motor works, the first flexible convex part 12 can be elastically deformed to absorb vibration generated by the motor, and the second flexible convex part 12 can be elastically deformed to absorb vibration generated by the motor, so that vibration excitation generated by the motor is isolated, and the vibration is prevented from being transmitted to other structural parts.
Referring to fig. 1 to 7, in some embodiments of the present utility model, the flexible protrusion 12 includes a boss 121, the boss 121 having a buffer surface facing away from the main body 11 for supporting the motor on the external structural member, and when the motor vibrates, the motor and the external structural member press the boss 121, and the vibration is absorbed by elastic deformation of the boss 121, thereby absorbing the vibration of the motor and isolating vibration excitation of the motor.
Further, the flexible protrusion 12 further includes a plurality of ribs 122, and the plurality of ribs 122 are disposed on the buffer surface at intervals, it can be appreciated that the plurality of ribs 122 are disposed on the buffer surface at intervals, specifically, the plurality of ribs 122 are used for supporting the motor on the external structural member, when the motor vibrates, the motor and the external structural member can squeeze the ribs 122 and the boss 121, and the vibration is absorbed through elastic deformation of the ribs 122 and the boss 121, thereby isolating vibration excitation of the motor.
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 appreciated that the vibration absorption effect of the flexible convex portion 12 can be improved by the plurality of ribs 122, so that vibration excitation generated by the motor is further isolated, and the plurality of ribs 122 extend along the radial direction of the motor, so that the supporting strength of the motor in the radial direction can be improved, the buffer performance can be improved, meanwhile, the motor has good supporting performance in the radial direction, and the working stability of the motor can be improved. Similarly, the following description will be made with the third direction as the circumferential direction of the motor unless otherwise specified.
Referring to fig. 1 to 1, in some embodiments of the present utility model, the second surface 112 is provided with a plurality of buffer grooves 1121 at intervals, and it is understood that the plurality of buffer grooves 1121 are arranged at intervals and provided on the second surface 112, in particular, the motor may be supported on an external structural member through the second surface 112 of the buffer element 10, and when the motor vibrates, the plurality of buffer grooves 1121 of the second surface 112 may provide an elastically deformed space for the buffer element 10, so that the buffer element 10 absorbs the vibration generated by the motor through elastic deformation, thereby isolating vibration excitation of the motor from the external structural member and improving the overall sound quality.
In addition, the plurality of buffer slots 1121 extend along the second direction and are arranged along the third direction, which is perpendicular to the first direction and the second direction, respectively, and in combination with the foregoing, the plurality of buffer slots 1121 extend along the axial direction of the motor and are arranged along the circumferential direction of the motor, so that the plurality of buffer slots 1121 can improve the buffer performance while having good supporting performance in the axial direction of the motor and improve the working stability of the motor.
Referring to fig. 1 to 4 and 7, in some embodiments of the present utility model, the 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 the first direction, specifically, in combination with the foregoing, the buffer hole 13 penetrates the first surface 111 and the second surface 112 along the radial direction of the motor, and when the motor generates vibration transmitted along the circumferential direction, the buffer hole 13 may provide a space for elastic deformation of the buffer element 10, so that the vibration of the motor in the circumferential direction may be absorbed by the buffer element 10, thereby reducing vibration noise generated by the motor.
Further, referring to fig. 1 to 4 and 7, in some embodiments of the present utility model, the body 11 is configured in a strip shape extending in a third direction, the buffer holes 13 are provided at least one side of the mounting groove 1111 in the third direction, the third direction being perpendicular to the first direction and the second direction, respectively, wherein, in combination with the foregoing, the body 11 extends in the circumferential direction of the motor, the buffer holes 13 are provided at least one side of the mounting groove 1111 in the circumferential direction of the motor, such that, when the motor vibrates, the motor and the external structural member may press the buffer element 10, the buffer element 10 may absorb the vibration through deformation of the buffer holes 13 between the motor and the external structural member to further enhance the noise reduction effect of the buffer element 10, and alternatively, opposite sides of the mounting groove 1111 in the circumferential direction of the motor are provided with the buffer holes 13, respectively, the buffer holes 13 may provide a space for elastic deformation of the buffer element 10 when the motor vibrates, such that the buffer element 10 absorbs the vibration generated by the motor.
Referring to fig. 10, in some embodiments of the present utility model, 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 thus the buffer performance and the supporting performance of the buffer element 10 can be both considered, thereby improving the working stability of the motor.
Specifically, the third surface 113 is provided with a first flexible protrusion 12, and the ratio of the projected area of the first flexible protrusion 12 to the projected area of the third surface 113 in the projection along the second direction is not less than 0.25 and not more than 0.75, wherein the ratio may be 0.25, 0.5, 0.75. The fourth surface 114 is provided with a second flexible protrusion 12, wherein the ratio of the projected area of the second flexible protrusion 12 to the projected area of the fourth surface 114 in the projection in the second direction is not less than 0.25 and not more than 0.75, wherein the ratio may be 0.25, 0.5, 0.75. By combining the above, the ratio of the projection area S1 of the flexible convex portion 12 to the projection area S2 of the corresponding surface is not less than 0.25 and not more than 0.75, so as to provide good supporting strength for the motor and improve the working stability of the motor while realizing the buffering and energy absorption of the buffer element 10.
From the foregoing, it can be appreciated that in the design of the cushioning element 10, there is a contradiction between the cushioning performance and the supporting performance of the cushioning element 10, that is, the cushioning performance is high, and the supporting performance is low, and the supporting performance is high, and the cushioning performance is low. Taking the first flexible convex portion 12 provided on the third surface 113 as an example, if 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 in the projection along the second direction, the supporting performance of the buffer element 10 to the motor is enhanced, but the buffering performance of the buffer element 10 to the motor is weakened, and if 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 in the projection along the second direction, the buffering performance of the buffer element 10 to the motor is enhanced, but the supporting performance of the buffer element 10 to the motor is weakened. Therefore, 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, so as to achieve both the cushioning performance and the supporting performance of the cushioning element 10, thereby improving the working stability of the motor.
In some embodiments of the present utility model, the body 11 and the flexible protrusions 12 are configured as an integral structure made of rubber or silica gel, so that the structural strength of the buffer element 10 can be improved, good supporting performance can be provided for the motor, and the buffer element 10 is made of rubber or silica gel, good buffering performance can be provided for the motor, so as to isolate vibration excitation of the motor.
Referring to fig. 11, in some embodiments of the present utility model, 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, and thus the buffer performance and the supporting performance of the buffer element 10 can be considered, so as to improve the working stability of the motor.
Specifically, 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 more than 0.75, wherein the ratio may be 0.25, 0.5, or 0.75, and in combination with the foregoing, the plurality of buffer grooves 1121 on the second surface 112 may provide the buffer element 10 with an elastically deformable space, 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, 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 in order to ensure the buffering performance of the buffering element, 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 more than 0.75, so that the buffer element 10 can compromise the buffering performance and the supporting performance, thereby improving the working stability of the motor.
Referring to fig. 1 to 7, in some embodiments of the present utility model, the body 11 further has a fifth surface 115 and a sixth surface 116, the fifth surface 115 and the sixth surface 116 being opposite in a third direction, and the mounting groove 1111 being spaced apart from the fifth surface 115 and the sixth surface 116 by a predetermined distance, and in particular, when the motor assembly 100 is applied to a home appliance such as an air conditioner, the fifth surface 115 and the sixth surface 116 of the body 11 may be connected to other structural members, and the fifth surface 115 and the sixth surface 116 of the body 11 are spaced apart from the mounting groove 1111 by a predetermined distance, and when the motor vibrates, the body 11 portion between the mounting groove 1111 and the fifth surface 115 and the sixth surface 116 may be elastically deformed, thereby absorbing vibration generated by the motor to avoid transmission of noise.
Referring to fig. 1 to 9, according to the motor assembly 100 of the embodiment of the present utility model, the motor assembly 100 includes a stator 20, a rotor 30, and a damper member 10 of the above embodiment, the stator 20 is provided with a mounting lug 21, the rotor 30 is rotatably connected with the stator 20, and the damper member 10 is connected with the mounting lug 21, by applying the damper member 10 of the above embodiment, vibration noise of the motor assembly 100 can be reduced, and good supporting performance is provided for the stator 20 of the motor assembly 100, so as to improve operation stability of the motor assembly 100.
Specifically, the damper element 10 includes a main body 11 and a flexible protrusion 12, the main body 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 in a radial direction of the motor, the third surface 113 and the fourth surface 114 are opposite in an axial direction of the motor, the fifth surface 115 and the sixth surface 116 are opposite in a circumferential direction of the motor, and the first surface 111 of the main body 11 is provided with a mounting groove 1111, which can be engaged with a mounting lug 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, so that the motor can be connected with an external structural member through a surface of the damper element 10, and, when the motor is operated, vibration generated by the motor is absorbed by a portion between the surface of the damper element 10 and the mounting groove 1111, so that vibration excitation of the motor is isolated.
In addition, the flexible protrusion 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, the ribs 122 are disposed on a buffer surface of the boss 121 opposite to the main body 11, when the motor works, the boss 121 and the ribs 122 can be elastically deformed to absorb vibration generated by the motor, and the ribs 122 extend along a radial direction of the motor, so that the motor has good supporting performance in the radial direction.
Further, taking the flexible convex portion 12 disposed on the third surface 113 as an example, in the projection along the second direction, the ratio of the projection area S1 of the flexible convex portion 12 to the projection area S2 of the third surface 113 is not less than 0.25 and not more than 0.75, so as to achieve both the buffering performance and the supporting performance of the motor.
In addition, the second surface 112 is provided with a plurality of buffer grooves 1121, the plurality of buffer grooves 1121 can provide space for elastic deformation of the buffer element 10 to absorb vibration of the motor through elastic deformation, and in addition, in 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, so that the buffer element 10 combines the buffer performance and the supporting performance of the motor.
Still further, the main body 11 is further provided with buffer holes 13, the buffer holes 13 penetrate through the first surface 111 and the second surface 112 in the radial direction of the motor, and the buffer holes 13 are respectively provided at opposite sides of the mounting groove 1111 in the circumferential direction of the motor to provide a space for elastic deformation of the buffer member 10, thereby absorbing vibration generated by the motor.
Referring to fig. 8 and 9, in some embodiments of the present utility model, the motor assembly 100 further includes a mounting bracket 40, the mounting bracket 40 being provided with a mounting portion 41, the mounting portion 41 being engaged with the buffer member 10 for limiting the stator 20 to achieve assembly of the motor assembly 100.
Specifically, the mounting bracket 40 may be mounted on the outside of the motor, the buffer element 10 is connected to the mounting lug 21 of the stator 20 of the motor, and the buffer element 10 may be engaged in the mounting portion 41 of the mounting bracket 40, so that the motor is mounted on the mounting bracket 40, and when the motor is operated, vibration generated by the motor may be isolated by the buffer element 10 between the mounting bracket 40 and the motor.
Referring to fig. 8 and 9, in some embodiments of the present utility model, the mounting ears 21 may include a plurality of mounting ears 21 arranged around the circumference of the stator 20 and correspondingly connected with the buffer member 10, to further reduce noise generated from the motor.
Specifically, the mounting bracket 40 may be provided with a plurality of mounting portions 41, the plurality of mounting portions 41 are arranged around the circumference of the motor, the stator 20 is provided with a plurality of mounting ears 21 around the circumference of the motor, the plurality of mounting ears 21 may be respectively connected with the buffer elements 10, and the buffer elements 10 may be engaged with the corresponding mounting portions 41, thereby realizing the mounting of the motor on the mounting bracket 40, and the noise generated by the motor may be greatly reduced through the plurality of buffer elements 10.
According to the household appliance provided by the embodiment of the utility model, by applying the motor assembly 100 of the embodiment, the noise of the household appliance can be reduced, and the use experience of a user can be improved.
In the related art, in order to isolate the excitation of the rotor side of the motor, the wind wheel is mainly a vibration damping wind wheel, and in order to isolate the excitation of the stator side of the motor, the buffer element 100 is designed on the mounting foot of the motor. Cushioning element 100 must be designed to provide both support and vibration damping characteristics. Based on the above background, there is an urgent need to optimize the structure of cushioning element 100 to meet the dual design requirements for vibration isolation and support.
Therefore, the utility model provides the buffer element 10, and the motor and the household appliance using the buffer element 10, which can solve the problems of low-frequency electromagnetic noise of an air conditioner and drop of the whole machine, and by adopting the buffer element 10 in the embodiment of the utility model, the low-frequency electromagnetic noise of the whole machine is reduced by about 10dB, the sound quality of the whole machine is improved, and the drop of the whole machine meets the requirements. A damper element 10 is a ring-like hexahedron (i.e., a main body 11), provided with a boss 121 and a plurality of ribs 122 on the upper and lower surfaces, and provided with a mounting groove 1111 and a damper hole 13, the left and right surfaces being flat surfaces (i.e., a fifth surface 115 and a sixth surface 116), the upper surface (i.e., a third surface 113) and the lower surface (i.e., a fourth surface 114) of the hexahedron, further, the boss 121 is provided with 1/4~3/4 of the upper surface or the lower surface, the boss 121 is provided with radial ribs 122, the number of ribs 122 is not less than 3, the rear surface (i.e., a second surface 112) of the hexahedron is provided with a plurality of damper grooves 1121 distributed in the circumferential direction of the motor, the total area of the plurality of damper grooves 1121 is 1/4~3/4 of the rear surface (i.e., a second surface 112), the front surface (i.e., a first surface 111) of the hexahedron is provided with a mounting groove 1111 and two damper holes 13, the mounting groove 1111 is used for fitting with a motor mounting lug 21, the two-side damper holes 13 penetrate the front and rear surface 10, and the hardness of the damper element is less than HS 50. The buffer element 10 in the embodiment of the utility model has the beneficial effects that the buffer element is matched with the motor stator 20, so that the supporting rigidity of the motor in the axial direction, the radial direction and the circumferential direction is ensured, the vibration isolation performance of the rubber pad in three directions is greatly improved, the low-frequency electromagnetic noise of the direct-current motor is effectively inhibited, the noise of the whole machine is improved, and the sound quality of the whole machine is improved.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.