Outer rotor generator structure for rowing machine and exercise bicycle
By integrating the rectifier circuit board function into the generator front cover PCB board and upper control module, and adopting a sealed structure design, the gap problem in the outer rotor generator structure is solved, reducing costs and improving reliability.
Patent Information
- Application Number
- CN202422280350.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The external rotor generator structures of existing rowers and exercise bikes have gaps that cause foreign objects to fall in, noise or jam, and the separation of the rectifier circuit and generator lead to high costs and complex wire connections.
The functions of the rectifier circuit board are integrated into the front cover PCB board and the upper control module of the generator, and the sealing structure is designed. The front cover PCB board and the rear protective cover are connected through snaps and holes, reducing the rectifier circuit board and preventing the gap between the stator and the rotor.
Reduces costs, improves product reliability, reduces component wires, prevents foreign objects from entering, and avoids noise and stuck problems.
Smart Images
Figure CN223156898U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of generators, in particular to an outer rotor generator structure for rowing machines and exercise bikes. Background Art
[0002] In rowing machines and exercise bikes, the outer rotor generator is usually installed at the central position of the equipment, and is combined with human power through transmission devices such as gears and chains to rotate the generator to generate electric energy. Due to its simple structure, high efficiency, low noise, strong durability and other characteristics, it has become one of the widely used generator types in the field of fitness equipment.
[0003] The existing outer rotor generator structure for rowing machines and exercise bikes on the market adopts an open structure, and there is a gap between the stator and the rotor of the generator, which is easy to cause foreign objects to fall in, resulting in problems such as noise or jamming. In addition, the existing generator and rectifier circuit are separate, so the whole set of products requires a generator, a rectifier circuit board and an upper controller. There are many wire connections between the three products, resulting in high costs and easy occurrence of defects. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to provide an outer rotor generator structure for rowing machines and exercise bikes.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: an outer rotor generator structure for rowing machines and exercise bikes, including a rear protection cover, a stator body is installed inside the rear protection cover, a front cover PCB board is snap-connected to the left end of the rear protection cover, a bracket is installed at the internal through hole of the front cover PCB board, a bearing is installed inside the bracket, a rotor body is installed inside the bearing, and a magnet is installed outside the bracket.
[0006] As a further description of the above technical scheme:
[0007] The outer diameter of the stator body is adapted to the inner diameter of the rear protection cover.
[0008] As a further description of the above technical scheme:
[0009] The left end of the rotor body extends to the outside of the front cover PCB board.
[0010] As a further description of the above technical scheme:
[0011] Both the bracket and the rotor body are arranged inside the magnet.
[0012] As a further description of the above technical scheme:
[0013] Both sides of the rear protective cover are provided with buckles, and both sides of the front cover PCB board are provided with card holes.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, the functions of the rectifying circuit board are respectively transferred to the front cover PCB board of the generator and the upper controller, so as to reduce the rectifying circuit board, greatly optimize the cost and improve the product reliability, reduce the component wires, and reduce the cost.
[0016] 2. In the utility model, a sealing structure is formed between the front cover PCB board and the rear protective cover to prevent foreign matters from falling in due to the gap between the stator and the rotor, causing problems such as noise or jamming. Description of the Drawings
[0017] Figure 1 It is an exploded view of the structure of an external rotor generator structure for a rowing machine and a fitness bike proposed by the utility model;
[0018] Figure 2 It is a three-dimensional view of an external rotor generator structure for a rowing machine and a fitness bike proposed by the utility model.
[0019] Legend Explanation:
[0020] 1. Rear protective cover; 2. Stator body; 3. Magnet; 4. Bracket; 5. Front cover PCB board; 6. Rotor body; 7. Bearing. Specific Embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0023] Referring to Figure 1-2 , an embodiment provided by the present utility model: an outer rotor generator structure for a rowing machine and a fitness bike, which includes a rear protection cover 1. A stator body 2 is installed inside the rear protection cover 1. A front cover PCB board 5 is snap-connected to the left end of the rear protection cover 1. A bracket 4 is installed at the internal through hole of the front cover PCB board 5. A bearing 7 is installed inside the bracket 4. A rotor body 6 is installed inside the bearing 7. A magnet 3 is installed outside the bracket 4. The outer diameter of the stator body 2 is adapted to the inner diameter of the rear protection cover 1. The left end of the rotor body 6 extends to the outside of the front cover PCB board 5. Both the bracket 4 and the rotor body 6 are arranged inside the magnet 3. Snap fasteners are provided on both sides of the rear protection cover 1, and snap holes are provided on both sides of the front cover PCB board 5.
[0024] Specifically, the front cover PCB board 5 and the rear protection cover 1 are connected through snap fasteners and snap holes, making the overall structure of the generator compact and having good sealing performance. The outside of the front cover PCB board 5 is connected to the upper control module through wires. Distributing the corresponding functions of the rectifier circuit board of the generator to the front cover PCB board 5 and the upper control module can reduce the rectifier circuit board, greatly optimize the cost and improve the product reliability, reduce the component wires, and reduce the cost.
[0025] Working principle: First, the front cover PCB board 5 and the rear protection cover 1 are connected through snap fasteners and snap holes to prevent gaps between the front cover PCB board 5 and the rear protection cover 1, with a compact structure. The magnet 3 generates a corresponding electromotive force through the stator body 2 to drive the rotation of the rotor body 6. The stator body 2 and the rotor body 6 are protected by the rear protection cover 1 and the front cover PCB board 5. The bearing 7 provided inside the bracket 4 can stably support the rotor body 6 to ensure the stability of the rotation of the rotor body 6.
[0026] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An external rotor generator structure for a rowing machine and an exercise bike, comprising a rear protective cover (1), characterized in that: The stator body (2) is installed inside the rear protective cover (1). The left end of the rear protective cover (1) is snap-connected to the front cover PCB board (5). A bracket (4) is installed at the internal through hole of the front cover PCB board (5). A bearing (7) is installed inside the bracket (4). A rotor body (6) is installed inside the bearing (7). A magnet (3) is installed outside the bracket (4). Clasps are provided on both sides of the rear protective cover (1), and card holes are provided on both sides of the front cover PCB board (5). The front cover PCB board (5) and the rear protective cover (1) are connected through the clasps and the card holes.
2. The external rotor generator structure for a rowing machine and an exercise bike according to claim 1, characterized in that: The outer diameter of the stator body (2) is adapted to the inner diameter of the rear protective cover (1).
3. The external rotor generator structure for a rowing machine and an exercise bike according to claim 1, characterized in that: The left end of the rotor body (6) extends outside the front cover PCB board (5).
4. A structure of an outer rotor generator for a rowing machine and a stationary bike according to claim 1, characterized in that: Both the bracket (4) and the rotor body (6) are arranged inside the magnet (3).