Rotary shaft device and door shaft assembly
By incorporating rolling elements in the rotating shaft assembly and providing grooves on their surface, the problems of high bearing costs and complex structures are solved, resulting in a low-cost, low-friction rotating shaft assembly that improves stability and simplifies the manufacturing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ENFI ENG CORP
- Filing Date
- 2025-05-14
- Publication Date
- 2026-07-10
Smart Images
Figure CN224478810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical component technology, specifically to a rotating shaft device and a door hinge assembly. Background Technology
[0002] Rotary shaft devices are used to reduce friction between rotating parts while supporting loads and ensuring the precise and efficient operation of mechanical components. In related technologies, rotary shaft devices generally use bearings as one of their components. However, bearings are expensive, have high operating costs, and are limited in application scenarios, typically used in applications requiring high precision and stable operation. Furthermore, they have complex structures and are difficult to manufacture. Utility Model Content
[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a rotating shaft device and a door hinge assembly.
[0004] The rotating shaft device of this utility model embodiment includes: a first rotating part, a second rotating part, and a rolling element. The first rotating part has a first rotating groove. The second end of the second rotating part is rotatably disposed in the first rotating groove. The rolling element is located between the first rotating part and the second rotating part and is in contact with the first rotating part and the second rotating part. At least one of the bottom of the first rotating groove and the end face of the second end is provided with a groove. A portion of the rolling element is located in the groove. At least a portion of the rolling element is located between the bottom of the first rotating groove and the end face of the second end, such that the bottom of the first rotating groove and the end face of the second end are spaced apart.
[0005] In some embodiments, the rolling element is a spherical ball.
[0006] In some embodiments, a first groove is formed on the bottom of the first rotating groove, and a second groove is formed on the end face of the second end.
[0007] The first groove and the second groove are disposed opposite each other in a first direction, and the rolling element is engaged in the first groove and the second groove.
[0008] In some embodiments, both the first groove and the second groove are conical grooves.
[0009] In some embodiments, both the first groove and the second groove are cylindrical grooves, and the sum of the dimensions of the first groove and the second groove in the first direction is less than the diameter of the rolling element.
[0010] In some embodiments, the opening of the first rotating groove and the opening of the first recess face upwards.
[0011] The second end is the lower end of the second rotating part, and the opening of the second groove faces downward.
[0012] In some embodiments, the first rotating groove is a cylindrical groove;
[0013] The second rotating part is a cylindrical rotating shaft, and the axis of the second rotating part passes through the center of the first groove and the center of the second groove.
[0014] In some embodiments, the ratio of the diameter of the cross-section of the first rotating groove to the outer diameter of the second rotating part is 1:(0.95-0.99).
[0015] In some embodiments, the second rotating part is a cylindrical base.
[0016] This utility model also proposes a door hinge assembly, including the aforementioned rotating shaft device.
[0017] The beneficial effects of this utility model are as follows: The rotating shaft device of this utility model, by providing a rolling element between the first rotating part and the second rotating part, allows the first rotating part and the second rotating part to rotate through the rolling element, thereby reducing the rotational resistance between the first rotating part and the second rotating part. Furthermore, at least one of the first rotating part and the second rotating part is provided with a groove to limit the rolling element, thereby improving the stability of the rotating shaft device. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the rotating shaft device according to an embodiment of the present utility model.
[0019] Figure 2 This is a cross-sectional view of the first rotating part according to an embodiment of the present utility model.
[0020] Figure 3 This is a top view of the first rotating part according to an embodiment of the present utility model.
[0021] Figure 4 This is a cross-sectional view of the second rotating part according to an embodiment of the present utility model.
[0022] Figure label:
[0023] 1. First rotating part; 11. First rotating groove; 12. First groove;
[0024] 2. Second rotating part; 21. Second end; 22. Second groove;
[0025] 3. Rolling parts. Detailed Implementation
[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0027] The rotating shaft device of an embodiment of the present invention will now be described with reference to the accompanying drawings. Figures 1 to 4 As shown, the rotating shaft device according to an embodiment of the present invention includes a first rotating part 1, a second rotating part 2, and a rolling element 3.
[0028] The first rotating part 1 has a first rotating groove 11, and the second end 21 of the second rotating part 2 is rotatably disposed within the first rotating groove 11, meaning the second rotating part 2 can rotate relative to the first rotating part 1. A rolling element 3 is located between and in contact with the first rotating part 1 and the second rotating part 2. At least one of the bottom of the first rotating groove 11 and the end face of the second end 21 has a groove. A portion of the rolling element 3 is located within the groove, and at least a portion of the rolling element 3 is located between the bottom of the first rotating groove 11 and the end face of the second end 21, such that the bottom of the first rotating groove 11 and the end face of the second end 21 are spaced apart. Specifically, the rolling element 3 is a spherical ball, and the groove can limit the movement of the rolling element 3. The rolling element 3 can move relative to the first rotating part 1 and the second rotating part 2 to replace sliding friction with rolling or rotating motion, reducing friction while bearing high loads. The bottom of the first rotating groove 11 and the end face of the second end 21 are spaced apart, so that the bottom of the first rotating groove 11 and the end face of the second end 21 do not slide against each other, thereby reducing the resistance when the second rotating part 2 rotates relative to the first rotating part 1.
[0029] like Figures 1 to 4 As shown, in some embodiments, a first groove 12 is formed on the bottom of the first rotating groove 11, and a second groove 22 is formed on the end face of the second end 21. The first groove 12 and the second groove 22 are arranged opposite to each other in a first direction, and the rolling element 3 is fitted into the first groove 12 and the second groove 22.
[0030] Specifically, the bottom of the first rotating groove 11 and the end face of the second end 21 are arranged opposite each other in a first direction, and at least a portion of the rolling element 3 is located between the bottom of the first rotating groove 11 and the end face of the second end 21 in the first direction. The two portions of the rolling element 3 in the first direction are respectively located within the first groove 12 and the second groove 22, thereby allowing the first groove 12 and the second groove 22 to limit the rolling element 3 in the first direction. Furthermore, the rolling element 3 abuts against the walls of the first groove 12 and the second groove 22 so that the rolling element 3 can space apart the bottom of the first rotating groove 11 and the end face of the second end 21.
[0031] For example, the first groove 12 is located at the center of the bottom of the first rotating groove 11, and the second groove 22 is located at the center of the end face of the second end 21.
[0032] In some embodiments, the openings of the first rotating groove 11 and the first recess 12 face upwards, the second end 21 is the lower end of the second rotating part 2, and the opening of the second recess 22 faces downwards. Specifically, the end face of the second end 21 is the lower end face of the second rotating part 2, the lower part of the rolling element 3 is located in the first recess 12, the upper part of the rolling element 3 is located in the second recess 22, and the middle part of the rolling element 3 is located between the bottom of the first rotating groove 11 and the end face of the second end 21.
[0033] like Figures 1 to 3 As shown, in some embodiments, both the first groove 12 and the second groove 22 are conical grooves. Specifically, the cross-sectional shape of both the first groove 12 and the second groove 22 is circular. The diameter of the cross-section of the first groove 12 decreases in the direction away from the second groove 22, and the diameter of the cross-section of the second groove 22 decreases in the direction away from the first groove 12. For example, the diameter of the cross-section of the first groove 12 decreases downward, and the diameter of the cross-section of the second groove 22 decreases upward.
[0034] In some embodiments, the first groove 12 and the second groove 22 are both cylindrical grooves, and the cross-sectional shape of the first groove 12 and the second groove 22 is circular. The sum of the dimensions of the first groove 12 and the second groove 22 in the first direction is less than the diameter of the rolling element 3, so that the rolling element 3 can separate the bottom of the first rotating groove 11 and the end face of the second end 21.
[0035] like Figures 1 to 4 As shown, in some embodiments, the first rotating groove 11 is a cylindrical groove, and the second rotating part 2 is a cylindrical base (extending in the vertical direction). The second rotating part 2 is a cylindrical rotating shaft (extending in the vertical direction).
[0036] The axis of the second rotating part 2 passes through the center of the first groove 12 and the center of the second groove 22. That is, the center of the first groove 12 and the center of the second groove 22 are located at the same position on the axis perpendicular to the second rotating part 2, which facilitates the rolling of the rolling element 3.
[0037] The ratio of the diameter of the cross-section of the first rotating groove 11 to the outer diameter of the second rotating part 2 is 1:(0.95-0.99), which facilitates the rotation of the second rotating part 2 relative to the first rotating groove 11. For example, the ratio of the diameter of the cross-section of the first rotating groove 11 to the outer diameter of the second rotating part 2 is 1:0.96.
[0038] The rotating shaft device according to this utility model embodiment uses a rolling element 3 between the first rotating part 1 and the second rotating part 2, thereby enabling rotation between the first rotating part 1 and the second rotating part 2 through the rolling element 3, greatly reducing the rotational resistance between the first rotating part 1 and the second rotating part 2. Furthermore, at least one of the first rotating part 1 and the second rotating part 2 is provided with a groove to limit the rolling element 3, thereby improving the stability of the rotating shaft device. The rotating shaft device according to this utility model embodiment has a structure that facilitates rotation, has low resistance, is convenient and practical, and is low in cost.
[0039] This utility model also proposes a door hinge assembly, which includes a rotating shaft device according to an embodiment of this utility model. Specifically, the rotating shaft device according to an embodiment of this utility model can be used as a connection device between the door and the frame, thereby reducing installation difficulty and cost.
[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0041] 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 of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0044] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A rotating shaft device, characterized in that, include: The system comprises a first rotating part, a second rotating part, and a rolling element. The first rotating part has a first rotating groove. The second end of the second rotating part is rotatably disposed within the first rotating groove. The rolling element is located between and in contact with the first rotating part and the second rotating part. At least one of the bottom of the first rotating groove and the end face of the second end is provided with a groove. A portion of the rolling element is located within the groove. At least a portion of the rolling element is located between the bottom of the first rotating groove and the end face of the second end, such that the bottom of the first rotating groove and the end face of the second end are spaced apart.
2. The rotating shaft device according to claim 1, characterized in that, The rolling element is a spherical ball.
3. The rotating shaft device according to claim 2, characterized in that, A first groove is formed on the bottom of the first rotating groove, and a second groove is formed on the end face of the second end. The first groove and the second groove are disposed opposite each other in a first direction, and the rolling element is engaged in the first groove and the second groove.
4. The rotating shaft device according to claim 3, characterized in that, Both the first groove and the second groove are conical grooves.
5. The rotating shaft device according to claim 3, characterized in that, Both the first groove and the second groove are cylindrical grooves, and the sum of the dimensions of the first groove and the second groove in the first direction is less than the diameter of the rolling element.
6. The rotating shaft device according to claim 3, characterized in that, The openings of the first rotating groove and the first recess face upwards. The second end is the lower end of the second rotating part, and the opening of the second groove faces downward.
7. The rotating shaft device according to claim 3, characterized in that, The first rotating groove is a cylindrical groove; The second rotating part is a cylindrical rotating shaft, and the axis of the second rotating part passes through the center of the first groove and the center of the second groove.
8. The rotating shaft device according to claim 7, characterized in that, The ratio of the diameter of the cross-section of the first rotating groove to the outer diameter of the second rotating part is 1:(0.95-0.99).
9. The rotating shaft device according to claim 7, characterized in that, The second rotating part is a cylindrical base.
10. A door hinge assembly, characterized in that, Includes the rotating shaft device as described in any one of claims 1-9.