Power surfboard, engine and box body of engine
By setting up an annular waterway cooling structure of the water-cooled box in the engine case, the problem of excessive temperature of the clutch assembly is solved, extending the service life of the power surfboard engine and reducing maintenance costs.
Patent Information
- Application Number
- CN202422534654.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The clutch assembly of the power surfboard engine is prone to failure due to excessive temperature, resulting in high failure rate, short service life and high maintenance costs.
A water-cooled box is arranged in the engine case, and annular waterways are arranged along both ends of the clutch axial direction to achieve cooling through the water inlet and outlet interfaces to reduce the temperature of the clutch assembly.
Effectively reduce the clutch assembly temperature by 15~20℃, reduce the deformation of the unidirectional bearing cage, extend the service life, and reduce the failure rate and maintenance costs.
Smart Images
Figure CN223120044U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water sports equipment, in particular to a powered surfboard, an engine and its box body. Background Technique
[0002] A powered surfboard is a water sports equipment powered by an engine. Compared with a non-powered surfboard, it can not only surf on the sea surface, but also travel on calm water surfaces, meeting the more diversified sports needs of water sports enthusiasts and improving the utilization rate of sports equipment.
[0003] The engine of a powered surfboard usually includes a cylinder block assembly and a clutch (such as an overrunning clutch) assembly. The cylinder block assembly is arranged in a cylinder shell, and the clutch assembly is arranged in a rear box body. The cylinder shell is connected to the rear box body to form the box body of the engine. The inside of the cylinder shell is a combustion chamber. Through the energy generated by the combustion of fuel in the combustion chamber, the piston rod of the cylinder block assembly makes a reciprocating motion, and drives the output shaft of the clutch assembly to rotate, thereby outputting power.
[0004] In the prior art, in order to prevent overheating, a water cooling device is usually arranged outside the cylinder shell of the cylinder block assembly to achieve the purpose of cooling, but no cooling measures are taken for the rear box body part. However, because the clutch assembly is close to the combustion chamber, and with the temperature rise generated by the movement friction of each component, during the working process of the engine, the temperature of this part is still relatively high. In fact, in actual use of traditional powered surfboards, the failure rate of the engine is relatively high and the service life is relatively short. The inventor's research found that the most easily failed part is the one-way bearing in the clutch assembly in the rear box body. The reason is that the plastic cage of the one-way bearing is very easy to deform when working at a higher temperature, resulting in the failure of the function of the one-way bearing, and then causing the loss of the function of the clutch kinetic energy output. Content of the Utility Model
[0005] Aiming at the problems in the background technique, the utility model provides a box body of an engine, an engine adopting this box body, and a powered surfboard adopting the above engine, so as to solve the problems of high failure rate, short service life and high maintenance cost of the powered surfboard engine in the prior art.
[0006] To achieve the purpose of the utility model, the utility model provides a box body of a powered surfboard engine. The box body includes a water-cooled box body, and the innovation lies in that: a water-cooled cavity is arranged on the water-cooled box body.
[0007] Further, a water-cooled cavity is respectively arranged at both ends of the water-cooled box body along the axial direction of the clutch.
[0008] Further, the water-cooled cavity is an annular water channel arranged around the virtual axis line of the clutch, and the annular water channel is provided with a water inlet interface and a water outlet interface.
[0009] Further, the water-cooling cavity is integrally formed with the water-cooling box body.
[0010] Further, the annular water channel includes an annular water tank, and the open end of the annular water tank is sealed by an annular end baffle.
[0011] Further, a sealing ring for sealing the annular water tank is arranged on the annular end baffle.
[0012] The present utility model also provides an engine for a power surfboard, and the innovation lies in that: the engine adopts the box body of the present invention.
[0013] The present utility model also provides a power surfboard, and the innovation lies in that: the power surfboard adopts the engine of the present invention.
[0014] Adopting the method of the present utility model has the following beneficial effects: Since the water-cooling box body is provided with a water-cooling cavity, the temperature during the working process of the clutch assembly in the water-cooling box body is greatly reduced (in actual tests, it can effectively reduce by 15 - 20 °C), the working environment of the clutch assembly is greatly improved, the deformation of the one-way bearing cage is effectively reduced, its service life is prolonged, thereby reducing the failure rate of the clutch and the engine, also prolonging the service life of the engine, and reducing the use and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The brief description of the drawings of the present utility model is as follows.
[0016] Attached Figure 1 is a schematic structural diagram of the present utility model;
[0017] Attached Figure 2 is Figure 1 an exploded view of;
[0018] Attached Figure 3 is Figure 1 a sectional view of;
[0019] Attached Figure 4 is a schematic structural diagram of the annular water tank.
[0020] In the figure: 1. Water-cooling box body; 2. Cylinder shell; 3. One-way bearing; 11. Water-cooling cavity; 12. Water inlet interface; 13. Water outlet interface; 14. Annular water tank; 15. Annular end baffle; 16. Sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The following further illustrates the present utility model in conjunction with embodiments.
[0022] As attached Figure 1The engine of the power surfboard of the present utility model shown, wherein the engine housing includes a water-cooled housing 1 (replacing the rear housing described in the background art) and a cylinder block 2. The inside of the cylinder block 2 is a combustion chamber, which is cooled by an independent water-cooling system (prior art), while the water-cooled housing is as shown in Attachment Figure 2 to Attachment Figure 4 shown, and the internal clutch assembly is cooled by setting the water-cooled cavity 11 structure. The part 3 shown in Attachment Figure 2 and Attachment Figure 3 is the important part of the clutch assembly, the one-way bearing. By injecting circulating cooling water into the water-cooled cavity 11, the purpose of reducing the working temperature of the one-way bearing can be achieved. In order to achieve the best cooling effect, the water-cooled cavity 11 is an annular water channel arranged around the virtual axis of the clutch. The annular water channel is provided with a water inlet interface 12 and a water outlet interface 13 for connecting cooling water and cooling water circulation. As an embodiment, the whole water-cooled cavity 11 is integrally formed with the water-cooled housing to avoid the problem of cooling water sealing. As another embodiment, the water-cooled cavity 11 includes an annular water tank 14 and an annular end baffle 15. The annular end baffle is provided with a sealing ring 16 for sealing the annular water tank 14. This structure is more convenient for installation, disassembly and maintenance.
[0023] The water-cooled cavity structure of the water-cooled housing of the present utility model is simple. During operation, after the cooling water is introduced, the working temperature of the clutch assembly inside can be greatly reduced, effectively extending the service life of the parts inside, such as the one-way bearing, and further extending the service life of the engine, and reducing the use and maintenance costs of the clutch, engine and power surfboard using the present utility model.
Claims
1. A housing of a power surfboard engine, the engine including a clutch, characterized in that: The box body includes a water-cooled box body, a water-cooled cavity is arranged on the water-cooled box body, and a water-cooled cavity is arranged at each of the two end portions of the water-cooled box body along the axial direction of the clutch. The water-cooled cavity is an annular water channel arranged around the virtual axis line of the clutch. The annular water channel is provided with a water inlet interface and a water outlet interface. The annular water channel includes an annular water groove, and the open end of the annular water groove is sealed by an annular end baffle; the water-cooled cavity is integrally formed with the water-cooled box body.
2. The housing of the power surfboard engine according to claim 1, characterized in that: A sealing ring for sealing the annular water groove is arranged on the annular end baffle.
3. An engine for a power surfboard, characterized in that: It includes the box body according to claim 1 or 2.
4. A power surfboard, characterized in that: It includes the engine according to claim 3.