Easily-assembled structure of flywheel shaft
By opening a groove on the rotating shaft and installing an elastic ring, the problem of difficult flywheel shaft installation is solved, a close fit between the bearing and the rotating shaft is achieved, and the stable and smooth operation of the flywheel shaft is ensured.
Patent Information
- Application Number
- CN202423092344.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-16
AI Technical Summary
In the prior art, the installation of the flywheel shaft is difficult, which affects the stability and durability of the bearing and the rotating shaft, resulting in poor rotation performance of the flywheel.
A groove is opened on the rotating shaft, and an elastic ring is sleeved on the groove. The rotating shaft and the bearing are tightly fitted through the elastic ring to reduce the gap and ensure smooth rotation.
The close fit between the rotating shaft and the bearing is achieved, which reduces the difficulty of installation and ensures the stable and smooth operation of the flywheel shaft without abnormal noise.
Smart Images
Figure CN223375008U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to an easy-to-install structure for a flywheel shaft. Background Art
[0002] Spinning bikes, a common piece of fitness equipment, are beloved by fitness enthusiasts for their efficient and convenient fitness benefits. Among all the components of a spinning bike, bearings and shafts are crucial. They primarily connect the pedals to the flywheel, bearing the weight and force applied by the rider on the pedals, and playing a crucial role in the bike's stability and durability. Therefore, during the actual flywheel assembly process, the mounting structure of the bearings and shaft is extremely important, directly impacting the flywheel's rotational performance. Therefore, reducing the difficulty of installing the bearings and shaft and ensuring a stable and effective installation is a challenge in current flywheel shaft technology. Utility Model Content
[0003] To address the aforementioned issues, the present invention provides an easy-to-install structure for a flywheel shaft. The structure comprises a shaft hole, a bearing, and a rotating shaft. The rotating shaft extends through the shaft hole and is securely fitted within the inner hole of the bearing. Furthermore, the rotating shaft is provided with a plurality of grooves, which are covered with elastic rings, i.e., the elastic rings are positioned between the grooves and the bearing. This design ensures that the rotating shaft can not only be smoothly inserted into the shaft hole, but also reduces the clearance between the rotating shaft and the bearing, enhancing the tightness of the fit, thereby ensuring smooth, uninterrupted, and noise-free operation of the flywheel shaft.
[0004] According to the purpose of the present utility model, the present utility model provides an easy-to-install structure for a flywheel shaft.
[0005] It includes an axial hole, a bearing and a rotating shaft. The rotating shaft passes through the axial hole and is fixedly matched with the inner hole of the bearing. A plurality of grooves are provided on the rotating shaft. The grooves are covered with elastic rings. The elastic rings are located between the grooves and the bearing.
[0006] Preferably, the rotating shaft is further provided with a shaft rod and a shaft rod head, the diameter of the shaft rod head is larger than the diameter of the shaft rod, the shaft rod passes through the bearing and is fixedly fitted with the inner hole of the bearing, and the shaft rod head is placed on the outside of the shaft hole.
[0007] Preferably, a hollow shaft hole cavity is formed inside the shaft hole, and the bearing includes a first bearing and a second bearing, and the first bearing and the second bearing are respectively placed at two ends of the shaft hole cavity.
[0008] Preferably, a partial area of the shaft bore protrudes inward to form a circle of bosses, and the bosses are located between the first bearing and the second bearing, and the first bearing and the second bearing respectively abut against the bosses.
[0009] Preferably, a first bearing hole and a second bearing hole are respectively provided at the centers of the first bearing and the second bearing, and the diameters of the first bearing hole and the second bearing hole are both larger than the diameter of the shaft.
[0010] Preferably, the rotating shaft can pass through the first bearing hole and the second bearing hole, and be coaxially matched with the shaft hole.
[0011] Preferably, the shaft is provided with two grooves, namely a first groove and a second groove. An elastic ring is sleeved between the first groove and the first bearing, and an elastic ring is also sleeved between the second groove and the second bearing.
[0012] Preferably, the position of the first groove corresponds to the middle position of the thickness of the first bearing hole; the position of the second groove corresponds to the middle position of the thickness of the second bearing hole.
[0013] Preferably, the depths of the first groove and the second groove are equal, and the wire diameter of the elastic ring is greater than the depths of the two grooves.
[0014] Preferably, the elastic ring is an O-type rubber ring.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] The utility model discloses an easy-to-install structure for a flywheel shaft, comprising a rotating shaft, a first bearing, a second bearing, and an axial hole located on the flywheel. During the actual installation process of the flywheel shaft, the rotating shaft needs to penetrate the inner holes of the first bearing and the second bearing one by one, so that the rotating shaft and the two bearings are respectively tightly fitted. To ensure that the rotating shaft can pass smoothly through the inner holes of the two bearings, the diameter of the rotating shaft needs to be smaller than the inner hole diameters of the first bearing and the second bearing. To avoid the rotating shaft diameter being too small, which would increase the gap between the rotating shaft and the bearings, two grooves are provided on the rotating shaft, the two grooves being located at the positions where the rotating shaft and the bearings are fitted. In addition, elastic rings are provided around the two grooves, i.e., the elastic rings are located between the grooves and the bearings, and the wire diameter of the elastic rings is greater than the depth of the two grooves. This design not only ensures that the rotating shaft can be smoothly fitted with the bearings, but also reduces the gap between the rotating shaft and the bearings, improving the tightness of the fit between the two, and ensuring that the flywheel shaft operates smoothly, smoothly, and without abnormal noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to make the advantages of the present invention more easily understood, the present invention briefly described above will be described in more detail with reference to specific embodiments shown in the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the present invention and are therefore not to be considered as limiting the scope of protection thereof. The accompanying drawings describe and explain the present invention with additional specificity and detail.
[0018] In the attached figure:
[0019] Figure 1 This is a cross-sectional structure of an easy-to-install structure of a flywheel shaft in a preferred embodiment of the utility model Figure 1 (The shaft is not inserted into the shaft hole);
[0020] Figure 2 This is a cross-sectional structure of an easy-to-install structure of a flywheel shaft in a preferred embodiment of the utility model Figure 2 (The shaft has been inserted into the shaft hole);
[0021] Figure 3 A three-dimensional structure of an easy-to-install structure of a flywheel shaft in a preferred embodiment of the utility model Figure 1 (The shaft is not inserted into the shaft hole);
[0022] Figure 4 A three-dimensional structure of an easy-to-install structure of a flywheel shaft in a preferred embodiment of the utility model Figure 2 (The shaft has been inserted into the shaft hole);
[0023] In the picture:
[0024] Axis hole; 11-axis hole cavity; 111-boss;
[0025] 20 - bearing; 21 - first bearing; 211 - first bearing hole; 22 - second bearing; 221 - second bearing hole; 30 - rotating shaft; 31 - shaft; 32 - shaft head; 33 - groove; 331 - first groove; 332 - second groove;
[0026] 40-elastic ring; 50-flywheel. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0028] In the following discussion, details are provided to provide a more thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention can be implemented without one or more of these details. In certain examples, some technical features known in the art are not described in detail to avoid confusion with the present invention. It should be noted that the terms "upper," "lower," "front," "back," "left," "right," and similar expressions used herein are for illustrative purposes only and are not limiting.
[0029] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".
[0030] Please refer to Figures 1 to 4 A preferred embodiment of the present invention provides an easy-to-install structure for a flywheel shaft, comprising an axial hole 10 located at the center of a flywheel 50, two bearings 20 having an interference fit with the axial hole 10, and a rotating shaft 30 that can be inserted into the axial hole 10. Specifically, the axial hole 10 passes through the center of the flywheel 50 and defines a hollow chamber, namely, a axial hole cavity 11. Furthermore, the inner sidewall of the central region of the axial hole 10 protrudes radially inwardly around the central axis, forming a circle of bosses 111. This results in the diameter of the ends of the axial hole 10 being larger than the diameter of the central region.
[0031] Furthermore, the two bearings 20 are respectively a first bearing 21 and a second bearing 22, and each bearing 20 has a bearing hole defined in its center, namely a first bearing hole 211 and a second bearing hole 221. Specifically, the first bearing 21 and the second bearing 22 are interference-fitted at both ends of the shaft bore 11, and respectively abut against the bosses 111 of the shaft bore 11. Thus, the two bearings 20 are fixedly mounted within the shaft bore 10, preventing the two bearings 20 from loosening or shifting within the shaft bore 10.
[0032] Please continue reading Figures 1 to 2 The rotating shaft 30 is a long, rod-shaped structure with a shaft head 32 at its top and a shaft 31 as its main body. The diameter of the shaft 31 is smaller than the diameters of the first bearing hole 211 and the second bearing hole 221. In this way, the shaft 31 can be smoothly inserted into the two bearing holes, so that the rotating shaft 30 and the shaft hole 10 are coaxially matched. To avoid the shaft 31 having an excessively small diameter, which would increase the gap between the shaft 31 and the two bearing holes and affect the tight fit between the shaft 31 and the bearing 20, preferably, two grooves 33 of the same depth are formed on the shaft 31 and around the center of the shaft 31, namely, a first groove 331 and a second groove 332. The positions of the two grooves 33 coincide with the positions where the shaft 31 is sleeved on the two bearings 20.
[0033] Furthermore, elastic rings 40, preferably O-shaped rubber rings, are respectively mounted on the two grooves 33. The diameter of the elastic rings 40 is greater than the depth of the two grooves. Thus, when the rotating shaft 30 is inserted into the two bearings 20, the elastic rings 40 are sandwiched between the first groove 331 and the shaft 31, and between the second groove 332 and the shaft 31. Due to the smooth and flexible nature of the elastic rings 40, they not only fill the gap between the rotating shaft 30 and the two bearings 20, but also ensure a smoother and tighter fit. To enhance the stability and uniformity of the rotation of the bearings 20 and the rotating shaft 30, the grooves 33 are preferably positioned midway between the thickness of the two bearings 20. Thus, the elastic rings 40 are mounted at the center of the first bearing hole 211 and the second bearing hole 221, ensuring uniform and stable rotation of the bearings 20 and the rotating shaft 30.
[0034] Please continue reading Figures 3 and 4 After the shaft 31 is inserted into the shaft hole 10, the shaft head 32 is left on the outer side of one end of the shaft hole 10. The shaft head 32 is convenient for inserting the rotating shaft 30 and also convenient for removing the rotating shaft 30 from the shaft hole 10. In addition, to ensure that the rotating shaft 30 can fully fit into the shaft hole 10, it is preferred that the length of the shaft 31 of the rotating shaft 30 is greater than the length of the shaft hole 10.
[0035] As can be seen from the above, the utility model provides an easy-to-install structure for a flywheel shaft, in which two grooves 33 are provided on the rotating shaft, and the two grooves 33 are respectively located at the positions where the rotating shaft 30 and the bearing 20 are fitted together, and an elastic ring 40 is also sleeved on the two grooves 33, that is, the elastic ring 40 is located between the rotating shaft 30 and the bearing 20. Such a design reduces the gap between the rotating shaft 30 and the bearing 20, increases the tightness of the fit between the two, and due to the smoothness and soft elasticity of the elastic ring 40, also ensures that the bearing 20 and the rotating shaft 30 run smoothly, smoothly and without abnormal noise.
[0036] Unless otherwise defined, technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art in the field of the present invention. The terms used herein are for purposes of describing specific implementations only and are not intended to limit the present invention. Terms such as "component" and "mount" used herein may refer to either a single part or a combination of multiple parts. Terms such as "mount" and "dispose" used herein may refer to the attachment of one part directly to another or to the attachment of one part to another through an intermediate component. Features described herein in one embodiment may be applied individually or in combination with other features in another embodiment, unless such features are not applicable in that other embodiment or otherwise indicated. The foregoing description illustrates and describes preferred embodiments of the present invention. As stated above, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It is applicable to various other combinations, modifications, and environments, and can be modified within the scope of the present invention, using the teachings above or the skills or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be within the scope of the claims appended hereto.
Claims
1. A flywheel shaft easy installation structure, characterized in that: It includes an axial hole, a bearing and a rotating shaft. The rotating shaft passes through the axial hole and is fixedly matched with the inner hole of the bearing. A plurality of grooves are provided on the rotating shaft. The grooves are covered with elastic rings. The elastic rings are located between the grooves and the bearing.
2. The easy-to-install structure for a flywheel shaft according to claim 1, characterized in that: The rotating shaft is also provided with a shaft rod and a shaft rod head. The diameter of the shaft rod head is larger than the diameter of the shaft rod. The shaft rod passes through the bearing and is fixedly matched with the inner hole of the bearing. The shaft rod head is placed on the outside of the shaft hole.
3. The easy-to-install structure for a flywheel shaft according to claim 2, characterized in that: A hollow shaft hole cavity is formed inside the shaft hole, and the bearing includes a first bearing and a second bearing. The first bearing and the second bearing are respectively disposed at two ends of the shaft hole cavity.
4. The easy-to-install structure for a flywheel shaft according to claim 3, characterized in that: Part of the shaft bore protrudes inward to form a circle of bosses, and the bosses are located between the first bearing and the second bearing. The first bearing and the second bearing rest against the bosses respectively.
5. The easy-to-install structure for a flywheel shaft according to claim 3, characterized in that: A first bearing hole and a second bearing hole are respectively provided at the centers of the first bearing and the second bearing. The diameters of the first bearing hole and the second bearing hole are both larger than the diameter of the shaft.
6. The easy-to-install structure for a flywheel shaft according to claim 5, characterized in that: The rotating shaft can pass through the first bearing hole and the second bearing hole and be coaxially matched with the shaft hole.
7. The easy-to-install structure for a flywheel shaft according to claim 6, characterized in that: The shaft is provided with two grooves, namely a first groove and a second groove. An elastic ring is sleeved between the first groove and the first bearing, and an elastic ring is also sleeved between the second groove and the second bearing.
8. The easy-to-install structure for a flywheel shaft according to claim 7, characterized in that: The position of the first groove corresponds to the middle position of the thickness of the first bearing hole; the position of the second groove corresponds to the middle position of the thickness of the second bearing hole.
9. The easy-to-install structure for a flywheel shaft according to claim 7, characterized in that: The depths of the first groove and the second groove are equal, and the wire diameter of the elastic ring is greater than the depths of the two grooves.
10. The easy-to-install structure for a flywheel shaft according to claim 1, characterized in that: The elastic ring is an O-type rubber ring.