Bearing, bearing support assembly, and home appliance
By designing the oil reservoir and oil guide hole in the bearing with spacing and staggered arrangement, the problem of frictional noise during bearing rotation is solved, and the uniformity of lubrication and service life are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOMI TECH (WUHAN) CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-12
AI Technical Summary
The noise and shortened lifespan caused by friction during bearing rotation affect the user experience.
Design a bearing comprising an oil reservoir and an oil guide hole, wherein the oil guide hole is spaced apart from the end of the support body and is staggered in the circumferential and axial directions to ensure uniform lubrication and avoid friction and noise.
Uniform lubrication reduces frictional noise, extends the service life of bearings and rotating shafts, and improves the user experience.
Smart Images
Figure CN224352282U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of bearings, and more particularly to a bearing, a bearing support assembly, and a household appliance. Background Technology
[0002] The function of a bearing is to support the rotation of a rotating shaft. The rotating shaft is supported and installed in the bearing bore. In related technologies, friction will occur when the rotating shaft rotates in the bearing, resulting in bearing noise, which affects the service life of the bearing and the rotating shaft, and also affects the user experience. Utility Model Content
[0003] To overcome the problems existing in the related technologies, this disclosure provides a bearing, a bearing support assembly, and a household appliance.
[0004] According to a first aspect of the present disclosure, a bearing is provided, including a support body, the support body having a support hole, an oil reservoir and an oil guide hole, the oil reservoir being formed between an inner sidewall and an outer sidewall of the support body, the oil guide hole being formed on the inner sidewall of the support body and communicating between the support hole and the oil reservoir, wherein, in the axial direction of the bearing, the oil guide hole is spaced apart from the end of the support body.
[0005] In some possible embodiments, the distance between the oil guide hole closest to the end of the support body and the end of the support body along the axial direction of the bearing is 0.5 mm to 1 mm.
[0006] Setting this interval within the range of 0.5mm to 1mm ensures that the contact surface between the rotating shaft at the end and the support body is a complete circle, while also ensuring axial lubrication. It also avoids the situation where the dimension a is too small, which would hinder the formation of the oil guide hole and affect the structural strength.
[0007] In some possible embodiments, there are multiple oil storage chambers and multiple oil guide holes, with multiple oil storage chambers arranged at circumferential intervals along the support body, and each oil storage chamber corresponding to an oil guide hole.
[0008] By arranging oil reservoirs at intervals along the circumference of the support body, the lubrication effect on all parts of the rotating shaft in the circumference can be more comprehensive, effectively avoiding insufficient local lubrication, enhancing the smoothness of the rotating shaft, and reducing wear caused by uneven lubrication.
[0009] In some possible embodiments, the plurality of oil guide holes arranged circumferentially on the support body are staggered along the axial direction of the support body.
[0010] This implementation method, which involves staggering the oil guide holes along the axial direction of the support body, can shorten the length of the oil guide holes while ensuring lubrication throughout the entire axial direction. This avoids excessively long oil guide holes that could lead to large dimensional deviations, thereby preventing uneven lubricant flow during shaft rotation caused by dimensional deviations, which could result in additional vibration and noise. Furthermore, the axially staggered arrangement of the oil guide holes increases the integrity of one circumference of the support body, effectively reducing the area of the gap created by the oil guide holes, thus reducing friction between the rotating shaft and the gap.
[0011] In some possible embodiments, the plurality of oil guide holes arranged circumferentially on the support body are configured to partially overlap axially.
[0012] The partial overlap of the oil guide holes allows the lubricating oil to cover a wider area in the axial direction of the bearing, reducing the lubrication blind spot and ensuring that the rotating shaft can be fully lubricated at all axial positions, thereby improving the wear resistance and operational stability of the rotating shaft.
[0013] In some possible embodiments, each of the oil storage chambers is provided with a plurality of oil guide holes arranged at intervals along the axial direction.
[0014] By further dividing the oil guide holes, the dimensional accuracy of the oil guide holes can be guaranteed, thereby further avoiding the generation of vibration and friction when the rotating shaft rotates.
[0015] In some possible embodiments, each of the oil storage chambers is provided with a plurality of oil guide holes arranged at circumferential intervals along the support body.
[0016] Several oil guide holes can be set at each oil reservoir. Compared with a single oil guide hole, this can ensure dimensional accuracy. Furthermore, without changing the coverage area of the oil guide holes, it can increase the completeness of the circle in the circumferential direction, thereby avoiding friction between the rotating shaft and the oil guide holes.
[0017] In some possible embodiments, the area of the oil guide hole on the inner sidewall of the support body accounts for 5% to 15%.
[0018] By setting oil guide holes with sufficient area, it can be ensured that lubricating oil enters the support hole with sufficient flow and pressure, which avoids the generation of noise and prevents lubricating oil loss due to excessive area ratio.
[0019] According to a second aspect of the present disclosure, a bearing support assembly is provided, including a bearing housing and a bearing provided in the present disclosure, wherein the bearing support is mounted within the bearing housing.
[0020] According to a third aspect of the present disclosure, a household appliance is provided, including a rotating shaft and a bearing support assembly provided in the present disclosure, wherein the rotating shaft is supported and installed in the support hole.
[0021] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: the oil guide hole of the bearing is set to be spaced apart from the end of the support body, so that the contact surface of the rotating shaft installed in the support hole at the end is a complete circle, avoiding the occurrence of gaps at the end that would cause the rotating shaft to rub against it and generate noise, thereby ensuring the service life of the components and improving the user experience.
[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.
[0024] Figure 1 This is a schematic diagram of a bearing according to an exemplary embodiment;
[0025] Figure 2 This is a schematic diagram of a bearing from another perspective, according to an exemplary embodiment;
[0026] Figure 3 This is a schematic diagram of a bearing according to another exemplary embodiment;
[0027] Figure 4 This is a schematic diagram of a bearing from another perspective, according to another exemplary embodiment;
[0028] Figure 5 This is a schematic diagram showing the inner side unfolded of a bearing according to an exemplary embodiment;
[0029] Figure 6 This is a schematic diagram showing the inner side unfolded of a bearing according to another exemplary embodiment;
[0030] Figure 7 This is a schematic diagram showing the inner side unfolded of a bearing according to another exemplary embodiment;
[0031] Figure 8 This is a schematic diagram showing the inner side unfolded of a bearing according to another exemplary embodiment;
[0032] Figure 9 This is a schematic diagram of a bearing support assembly according to an exemplary embodiment.
[0033] Explanation of reference numerals in the attached figures
[0034] 10-Support body, 101-Inner wall, 102-Outer wall, 103-End, 11-Support hole, 12-Oil reservoir, 13-Oil guide hole, 100-Bearing, 200-Bearing seat, 201-Bearing rubber ring. Detailed Implementation
[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.
[0036] The function of a bearing is to support the rotation of a rotating shaft. The rotating shaft is mounted inside the bearing bore. In related technologies, friction during the rotation of the rotating shaft within the bearing causes bearing noise, affecting the service life of both the bearing and the rotating shaft, and also impacting the user experience. For example, when the rotating shaft rotates within the bearing bore, there will inevitably be a gap between the rotating shaft and the bearing. The presence of oil guide holes in the bearing creates notches at the bearing ends, causing the rotating shaft to rub against these notches, resulting in significant noise.
[0037] Therefore, this disclosure provides a bearing, with reference to Figures 1 to 4 The bearing 100 includes a support body 10 with a support hole 11 for supporting a rotating shaft. The support body 10 has an oil reservoir 12 and an oil guide hole 13 for lubricating the rotating shaft. The oil reservoir 12 is located between the inner wall 101 and the outer wall 102 of the support body 10, and lubricating oil is contained within the wall thickness of the support body 10. Lubricating oil can be filled into the oil reservoir 12 before the bearing and rotating shaft are installed. The oil guide hole 13 is located on the inner wall 101 of the support body 10 and connects the support hole 11 and the oil reservoir 12, allowing lubricating oil to gradually flow from the oil reservoir 12 through the oil guide hole 13 to lubricate the surface of the rotating shaft during its movement. The oil guide hole 13 is spaced apart from the end 103 of the support body 10 in the axial direction of the bearing 100. Figures 4 to 7 The inner unfolded view of the bearing shown shows that the left and right ends of the oil guide hole 13 do not extend to the end 103 of the bearing, so that there is no gap at the end 103.
[0038] By using the above technical solution, the oil guide hole 13 of the bearing 100 is set at a distance from the end 103 of the support body 10, so that the contact surface of the rotating shaft installed in the support hole 11 at the end 103 is a complete circle, avoiding the occurrence of gaps at the end 103 that would cause the rotating shaft to rub against it and generate noise, thereby ensuring the service life of the components and improving the user experience.
[0039] In this embodiment of the present disclosure, the distance between the oil guide hole 13 closest to the end 103 of the support body 10 and the end 103 of the support body 10 along the axial direction of the bearing 100 is 0.5 mm to 1 mm. For example, when the oil guide hole 13 is shaped as follows... Figure 6 In the distribution shown, dimension 'a' in the figure represents the distance between the oil guide hole 13 closest to the end 103 of the support body 10 and the end 103 of the support body 10. Dimension 'a' is set to 0.5mm~1mm, such as 0.5mm, 0.8mm, or 1mm, etc. Setting this distance within the range of 0.5mm~1mm ensures that the contact surface between the rotating shaft at the end 103 and the support body 10 is a complete circle, while also ensuring axial lubrication. The axial direction of the bearing 100 is... Figures 5 to 8 The drawing is in the left and right direction. At the same time, the dimension a is set to 0.5mm~1mm to avoid the dimension a being too small, which would make it difficult to form the oil guide hole 13 and avoid affecting the structural strength.
[0040] Reference Figures 5 to 8 The number of oil reservoirs 12 and oil guide holes 13 can both be multiple, and the multiple oil reservoirs 12 can be arranged at intervals along the circumference of the support body 10. Each oil reservoir 12 is provided with a corresponding oil guide hole 13. For example, in this embodiment of the present disclosure, the oil reservoirs 12 and oil guide holes 13 can be arranged at 120° intervals. The method of arranging the oil reservoirs 12 at intervals along the circumference of the support body 10 can ensure a more comprehensive lubrication effect on all parts of the circumference of the rotating shaft, effectively avoid the situation of insufficient local lubrication, enhance the smoothness of the rotation of the rotating shaft, and reduce wear caused by uneven lubrication.
[0041] Reference Figure 6 As shown, the multiple oil guide holes 13 arranged circumferentially on the support body 10 can be staggered along the axial direction of the support body 10. In other words, the multiple oil guide holes 13 are not arranged on the same full circle, but on different circumferences, so that the multiple oil guide holes 13 can achieve... Figure 6 The effect of the axially staggered arrangement is shown. This embodiment, which arranges the oil guide holes 13 axially staggered along the support body 10, is superior to... Figure 5The method shown allows for shortening the length of the oil guide hole 13 while ensuring lubrication throughout the entire axial direction. This avoids excessive dimensional deviations caused by an overly long oil guide hole 13, thus preventing uneven lubrication flow during shaft rotation due to dimensional deviations and resulting in additional vibration and noise. Furthermore, the axially staggered arrangement of the oil guide holes 13 increases the integrity of the support body 10 around its circumference. Figure 5 In one embodiment, there are three notches on a circumference created by the oil guide hole 13, while Figure 6 In one embodiment, there is one or two notches generated by the oil guide hole 13 in a circumferential direction, which effectively reduces the area of the notch and thus reduces the friction between the rotating shaft and the notch.
[0042] The multiple oil guide holes 13 arranged circumferentially on the support body 10 can be configured to partially overlap along the axial direction. (Refer to...) Figure 6 In the diagram, the area between the two opposite dashed lines represents the axial overlap region of the oil guide holes 13. These dashed lines are for illustration purposes only and do not represent the actual structure. For example, when the total axial lubrication length is 5mm, the length of each oil guide hole 13 can be set to 2.5mm, allowing for the arrangement of three oil guide holes 13 with an axial overlap. This partial overlap of the oil guide holes 13 allows for wider coverage of the lubricating oil in the axial direction of the bearing, reducing lubrication blind spots and ensuring sufficient lubrication of the rotating shaft at all axial positions, thereby improving the wear resistance and operational stability of the rotating shaft.
[0043] Reference Figure 7 As shown, each oil reservoir 12 can be provided with multiple oil guide holes 13 arranged at intervals along the axial direction. By further dividing the oil guide holes 13, the dimensional accuracy of the oil guide holes 13 can be ensured, thereby further avoiding the generation of vibration and friction when the rotating shaft rotates.
[0044] To reduce the noise caused by the dimensional deviation of the oil guide hole 13 during the rotation of the rotating shaft, refer to Figure 8 As shown, each oil reservoir 12 can be provided with a plurality of oil guide holes 13 arranged at intervals along the circumference of the support body 10. That is to say, in this embodiment of the present disclosure, several oil guide holes 13 can be provided at each oil reservoir 12. Compared with the case of a single oil guide hole 13, dimensional accuracy can be guaranteed. Furthermore, without changing the coverage area of the oil guide hole 13, the completeness of the circle in the circumferential direction can be increased, thereby avoiding friction between the rotating shaft and the oil guide hole 13.
[0045] In this embodiment, the area ratio of the oil guide holes 13 on the inner sidewall 101 of the support body 10 can be 5% to 15%. By setting oil guide holes 13 with a sufficient area, it can be ensured that lubricating oil enters the support hole 11 with sufficient flow and pressure, thus avoiding noise generation and preventing lubricating oil loss due to excessive area ratio. When the oil guide holes 13 are circular holes, the diameter of the oil guide holes 13 can be 1mm to 3mm, so that the diameter is small. Lubrication is achieved by densely distributing oil guide holes 13 with small diameters, which avoids the problem of the diameter being too small to affect lubrication, and also avoids the problem of the diameter being too large to cause lubricating oil loss.
[0046] According to a second aspect of the embodiments of this disclosure, a bearing support assembly is provided, such as... Figure 9 As shown, the bearing support assembly includes a bearing housing 200 and the aforementioned bearing 100. The bearing 100 is supported and installed within the bearing housing 200, and the bearing 100 can be mounted on the bearing housing 200 via a bearing rubber ring 201. This bearing support assembly possesses all the beneficial effects of the aforementioned bearing, which will not be elaborated upon here.
[0047] According to a third aspect of the present disclosure, a home appliance is provided, comprising a rotating shaft and the aforementioned bearing support assembly. The rotating shaft can be supported and installed in a support hole 11. The home appliance can be an air conditioner, and the rotating shaft can be the fan blade shaft of the air conditioner. In other embodiments, the home appliance can also be other devices with a rotating shaft and bearing support assembly, such as refrigerators, washing machines, etc., and this disclosure does not specifically limit the application to these devices. When the home appliance uses the bearing support assembly provided in the embodiments of this disclosure, bearing noise can be effectively reduced, thereby greatly ensuring the user's user experience.
[0048] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.
[0049] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.
[0050] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.
[0051] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.
[0052] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0053] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.
[0054] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”
[0055] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”
[0056] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.
[0057] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.
Claims
1. A bearing, characterized in that, The bearing includes a support body with a support hole, an oil storage cavity and an oil guide hole. The oil storage cavity is located between the inner and outer side walls of the support body, and the oil guide hole is located on the inner side wall of the support body and connects the support hole and the oil storage cavity. In the axial direction of the bearing, the oil guide hole is spaced apart from the end of the support body.
2. The bearing according to claim 1, characterized in that, Along the axial direction of the bearing, the distance between the oil guide hole closest to the end of the support body and the end of the support body is 0.5mm to 1mm.
3. The bearing according to claim 1, characterized in that, There are multiple oil storage chambers and multiple oil guide holes. The multiple oil storage chambers are arranged at intervals along the circumference of the support body, and each oil storage chamber is provided with a corresponding oil guide hole.
4. The bearing according to claim 3, characterized in that, The plurality of oil guide holes arranged circumferentially on the support body are staggered along the axial direction of the support body.
5. The bearing according to claim 4, characterized in that, The plurality of oil guide holes arranged circumferentially on the support body are configured to partially overlap along the axial direction.
6. The bearing according to claim 1, characterized in that, Each of the oil storage chambers is provided with a plurality of oil guide holes arranged at intervals along the axial direction.
7. The bearing according to claim 1, characterized in that, Each of the oil storage chambers is provided with a plurality of oil guide holes arranged at intervals along the circumference of the supporting body.
8. The bearing according to claim 1, characterized in that, On the inner wall of the support body, the area of the oil guide hole accounts for 5% to 15%.
9. A bearing support assembly, characterized in that, It includes a bearing housing and a bearing according to any one of claims 1-8, wherein the bearing is supported and mounted within the bearing housing.
10. A household appliance, characterized in that, It includes a rotating shaft and a bearing support assembly according to claim 9, wherein the rotating shaft is supported and mounted in the support hole.