A motorcycle engine side water tank cooling structure

By adopting a side-mounted water tank cooling structure on the motorcycle engine, the problems of large space occupation and high risk of water leakage caused by separating the water tank from the engine cylinder block are solved, achieving a compact structural design and efficient heat dissipation effect.

CN224679580UActive Publication Date: 2026-08-25JINLANG SCI & TECH
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Patent Information

Application Number
CN202521809262.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-22
Publication Date
2026-08-25
Estimated Expiration
2035-08-22

AI Technical Summary

Technical Problem

The existing motorcycle engine's water tank is set separately from the engine cylinder block, which is not compact, occupies a lot of space, and has long pipes with a high risk of leakage.

Method used

The system adopts a side-mounted water tank cooling structure, where the water tank radiator is installed on one side of the engine and fixed with rubber sleeves, T-shaped bushings and screws. Combined with an internal fan impeller, the structure is simplified and the heat dissipation speed is accelerated.

Benefits of technology

It achieves a compact structure, small footprint, short piping, reduced risk of water leakage, improved heat dissipation efficiency, and facilitates vehicle design and manufacturing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to motorcycle engine technical field, especially point to a kind of motorcycle engine side water tank radiator cooling structure, including the fixed seat of being installed in right box one side, fixed seat one side is equipped with water tank radiator, water tank radiator is equipped with mounting post on, rubber bushing is equipped in mounting post, rubber bushing is axially limited in mounting post, rubber bushing is equipped with T-shaped bushing, T-shaped bushing includes sleeve portion and flat plate portion, the edge of fixed seat is equipped with installation convex edge, right box is equipped with connecting column on screw joint, the rod portion of screw one passes through T-shaped bushing, installation convex edge and connecting column screw joint, flat plate portion is limited between the head of screw one and rubber bushing, installation convex edge is limited between rubber bushing and connecting column, right box is equipped with magneto, magneto includes stator assembly and is sleeved in flywheel assembly, flywheel assembly is fixedly connected with crankshaft, fixed seat is equipped with fan impeller. The utility model structure is compact, and it occupies small space, and pipeline is short, effectively reduce the risk of water leakage.
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Description

Technical fields:

[0001] This utility model belongs to the field of motorcycle engine technology, and specifically refers to a side-mounted water tank cooling structure for a motorcycle engine. Background technology:

[0002] Chinese utility model patent (publication number CN201347792Y, application date 2008.12.19, publication date 2009.11.18) discloses a motorcycle air-cooled engine, including an engine cylinder block, a water tank, a water pump, and a carburetor cable. A water passage is provided within the engine cylinder block. The water tank is connected to the water inlet on the right cover of the engine cylinder block via an outlet pipe and the water pump. The water tank is also connected to the water outlet on the left cover of the engine cylinder block via an inlet pipe. A throttle valve is installed on the outlet pipe between the water pump and the right cover of the engine cylinder block. (See attached specification.) Figure 1 , 2 It is evident that the water tank and engine are installed separately, resulting in a non-compact structure and a large space occupation; furthermore, the water tank and engine cylinder block are connected by a long pipeline, posing a significant risk of leakage. Utility Model Content:

[0003] The purpose of this invention is to provide a side-mounted water tank cooling structure for motorcycle engines. This structure is compact, occupies little space, and has short piping, effectively reducing the risk of water leakage.

[0004] This utility model is implemented as follows:

[0005] A side-mounted water tank cooling structure for a motorcycle engine includes a mounting base installed on the right side of the housing away from the left side. A water tank radiator is located on the side of the mounting base away from the right side of the housing. A mounting post is provided on the water tank radiator. A rubber sleeve is provided inside the mounting post, axially limiting the rubber sleeve within the mounting post. A T-shaped bushing is provided inside the rubber sleeve, comprising a sleeve portion and a flat portion. An mounting flange is provided on the edge of the mounting base. A connecting post is screwed onto the right housing. The shank of a screw passes through the T-shaped bushing and the mounting flange and is screwed onto the connecting post. The flat portion is limited between the head of the screw and the rubber sleeve, and the mounting flange is limited between the rubber sleeve and the connecting post. A magneto is located inside the right housing. The magneto includes a stator assembly mounted outside the crankshaft and a flywheel assembly mounted outside the stator assembly. The flywheel assembly is fixedly connected to the crankshaft. A fan impeller fixedly connected to the flywheel assembly is located inside the mounting base.

[0006] In the above-mentioned side-mounted water tank cooling structure for a motorcycle engine, the T-shaped bushing is made of copper, steel, or cast iron.

[0007] In the above-mentioned side-mounted water tank cooling structure for a motorcycle engine, an annular mounting sleeve protrudes from the inner side of the mounting post, and an annular groove is formed on the outer wall of the rubber sleeve. The rubber sleeve is secured in the annular groove by the annular mounting sleeve and is axially limited by the mounting post.

[0008] In the above-mentioned motorcycle engine side-mounted water tank cooling structure, the lower part and side of the mounting base are provided with a connecting notch, and multiple air guide strips are provided on the notch.

[0009] In the above-mentioned motorcycle engine side-mounted water tank cooling structure, the flywheel assembly includes a housing, a magnet disposed within the housing, and a wheel sleeve fixed in the middle of the housing. The wheel sleeve is fixedly connected to the crankshaft, and the fan impeller is fixedly connected to the housing.

[0010] In the above-mentioned motorcycle engine side-mounted water tank cooling structure, multiple mounting posts are provided. The water tank radiator includes an upper water chamber, a lower water chamber, and a core disposed between the upper water chamber and the lower water chamber. Mounting plates are respectively provided on the edges of the upper water chamber and the lower water chamber, and the mounting posts are provided on the mounting plates.

[0011] In the above-mentioned side-mounted water tank cooling structure for a motorcycle engine, the upper water chamber is provided with an inlet pipe, and the lower water chamber is provided with an outlet pipe.

[0012] In the above-mentioned side-mounted water tank cooling structure for a motorcycle engine, the mounting plate and inlet pipe of the upper water chamber are integrated with the upper water chamber, and the mounting plate and outlet pipe of the lower water chamber are integrated with the lower water chamber.

[0013] In the above-mentioned motorcycle engine side-mounted water tank cooling structure, the water tank radiator is provided with a protective cover, which is fixedly connected to the connecting protrusion of the fixing seat by two screws.

[0014] In the above-mentioned motorcycle engine side-mounted water tank cooling structure, the mounting base protrudes towards the water tank radiator side with a mounting strip that abuts against the cover, and the connecting protrusion is located on the outside of the mounting strip.

[0015] In the above-mentioned motorcycle engine side-mounted water tank cooling structure, the mounting flange, mounting strip, connecting flange and fixing seat are an integral structure.

[0016] The outstanding advantages of this utility model compared to the prior art are:

[0017] This utility model's water tank radiator is mounted sideways on one side of the engine, featuring a compact structure, small footprint, and short piping, effectively reducing the risk of leakage and facilitating vehicle design. A mounting base is provided on the right side of the housing, and the radiator is secured to it using a rubber sleeve, T-shaped bushing, and screws. The rubber sleeve provides all-around stress cushioning, reducing the risk of radiator breakage; the T-shaped bushing enhances the rubber sleeve's load-bearing capacity. Simultaneously, a fan impeller, fixedly connected to the flywheel assembly, is located within the mounting base, effectively accelerating the radiator's heat dissipation. The fan impeller's placement within the mounting base also simplifies the right housing structure and facilitates manufacturing. Attached image description:

[0018] Figure 1 This is a cross-sectional view of the present invention;

[0019] Figure 2 This is a perspective view of the utility model without the left box body;

[0020] Figure 3 This utility model is a three-dimensional structure without a left box and a protective cover. Figure 1 ;

[0021] Figure 4 This utility model is a three-dimensional two-dimensional form without a left box body and a protective cover;

[0022] Figure 5 This is a cross-sectional view of the present invention without the left housing, protective cover, crankshaft, magneto, and fan impeller;

[0023] Figure 6 This is a perspective view of the fixing base of this utility model.

[0024] Reference numerals: 1. Right housing; 2. Left housing; 3. Mounting base; 4. Water tank radiator; 4a. Upper water chamber; 4b. Lower water chamber; 4c. Core; 5. Mounting post; 6. Rubber sleeve; 7. T-shaped bushing; 7a. Sleeve part; 7b. Flat plate part; 8. Mounting flange; 9. Connecting post; 10. Screw one; 11. Annular mounting sleeve; 12. Magneto; 12a. Stator assembly; 12b. Flywheel assembly; 12b1. Housing; 12b2. Magnet; 12b3. Wheel sleeve; 13. Crankshaft; 14. Fan impeller; 15. Notch; 16. Air guide strip; 17. Mounting plate; 18. Protective cover; 19. Screw two; 20. Connecting flange; 21. Mounting strip; 22. Water inlet pipe; 23. Water outlet pipe. Detailed implementation method:

[0025] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —6:

[0026] A side-mounted water tank cooling structure for a motorcycle engine includes a mounting base 3 installed on the side of the right housing 1 away from the left housing 2. A water tank radiator 4 is located on the side of the mounting base 3 away from the right housing 1. A mounting post 5 is provided on the water tank radiator 4. A rubber sleeve 6 is provided inside the mounting post 5, axially limiting the rubber sleeve 6 within the mounting post 5. A T-shaped bushing 7 is provided inside the rubber sleeve 6, comprising a sleeve portion 7a and a flat portion 7b. A mounting flange 8 is provided on the edge of the mounting base 3. A connecting post 9 is screwed onto the right housing 1. The rod of screw 10 passes through the T-shaped bushing 7, the mounting flange 8, and is screwed to the connecting post 9. The flat plate 7b is limited between the head of screw 10 and the rubber sleeve 6, and the mounting flange 8 is limited between the rubber sleeve 6 and the connecting post 9. A magneto motor 12 is provided inside the right housing 1. The magneto motor 12 includes a stator assembly 12a fitted outside the crankshaft 13 and a flywheel assembly 12b fitted outside the stator assembly 12a. The flywheel assembly 12b is fixedly connected to the crankshaft 13. A fan impeller 14 is fixedly connected to the flywheel assembly 12b inside the fixed base 3. The fan impeller 14 is located inside the fixed base 3, which makes the structure of the right housing 1 simple and easy to process.

[0027] like Figure 1-6 As shown, the water tank radiator 4 of this utility model is installed on the side of the engine in a side-mounted manner. It has a compact structure, occupies little space, and has short pipes, which effectively reduces the risk of water leakage and facilitates the overall vehicle design. At the same time, a fixing seat 3 is set on the right side of the housing 1, and the water tank radiator 4 is fixedly installed on the fixing seat 3 by rubber sleeve 6, T-shaped bushing 7, and screw 10. The setting of rubber sleeve 6 plays a role in all-round stress buffering, reducing the risk of water tank radiator 4 cracking. The setting of T-shaped bushing 7 improves the stress-bearing capacity of rubber sleeve 6. Meanwhile, the fixing seat 3 is equipped with a fan impeller 14 fixedly connected to the flywheel assembly 12b, which effectively accelerates the heat dissipation speed of water tank radiator 4. At the same time, the fan impeller 4 is set in the fixing seat 3, which makes the structure of the right housing 1 simple and easy to process.

[0028] Preferably, the T-shaped bushing 7 is made of copper, steel, or cast iron.

[0029] Axial limiting structure of rubber sleeve 6 and mounting post 5: as follows Figure 5 As shown, the inner side of the mounting post 5 has a protruding annular mounting sleeve 11, and the outer side wall of the rubber sleeve 6 is recessed to form an annular groove. The rubber sleeve 6 is engaged in the annular groove by the annular mounting sleeve 11 and is axially limited by the mounting post 5.

[0030] To facilitate the airflow driven by the fan impeller 14, such as Figure 4 , 6 As shown, the lower part and side of the fixed base 3 are provided with a connecting notch 15, and a plurality of air guide strips 16 are provided on the notch 15.

[0031] The specific structure of the flywheel assembly 12b and the mounting structure of the fan impeller 14 are as follows: Figure 1 As shown, the flywheel assembly 12b includes a housing 12b1, a magnet 12b2 disposed inside the housing 12b1, and a wheel sleeve 12b3 fixed in the middle of the housing 12b1. The wheel sleeve 12b3 is fixedly connected to the crankshaft 13, and the fan impeller 14 is fixedly connected to the housing 12b1.

[0032] The specific structure of the water tank radiator 4 is as follows: Figure 3 , 4 As shown, multiple mounting posts 5 are provided. The water tank radiator 4 includes an upper water chamber 4a, a lower water chamber 4b, and a core 4c disposed between the upper water chamber 4a and the lower water chamber 4b. Mounting plates 17 are respectively provided on the edges of the upper water chamber 4a and the lower water chamber 4b, and the mounting posts 5 are provided on the mounting plates 17.

[0033] Furthermore, the upper water chamber 4a is provided with an inlet pipe 22, and the lower water chamber 4b is provided with an outlet pipe 23.

[0034] To reduce assembly steps and ensure a secure and reliable connection, the mounting plate 17 and inlet pipe 22 of the upper water chamber 4a are integrated with the upper water chamber 4a, and the mounting plate 17 and outlet pipe 23 of the lower water chamber 4b are integrated with the lower water chamber 4b.

[0035] To protect the water tank radiator 4, such as Figure 1 , 2 As shown, the water tank radiator 4 is covered with a protective cover 18, which is fixedly connected to the connecting protrusion 20 of the fixing base 3 by screws 19.

[0036] The specific installation structure of the protective cover 18 and the fixing base 3 is as follows: Figure 3 , 4 As shown, the mounting base 3 has a mounting strip 21 protruding towards the water tank radiator 4 and abutting against the protective cover 18, and the connecting flange 20 is located on the outside of the mounting strip 21.

[0037] To reduce assembly steps and ensure a secure and reliable connection, the mounting flange 8, mounting strip 21, connecting flange 20, and fixing base 3 are integrated into one structure.

[0038] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A side-mounted water tank cooling structure for a motorcycle engine, characterized in that: The system includes a mounting base (3) installed on the right side of the housing (1) away from the left side of the housing (2). A water tank radiator (4) is provided on the side of the mounting base (3) away from the right side of the housing (1). A mounting post (5) is provided on the water tank radiator (4). A rubber sleeve (6) is provided inside the mounting post (5). The rubber sleeve (6) is axially limited inside the mounting post (5). A T-shaped bushing (7) is provided inside the rubber sleeve (6). The T-shaped bushing (7) includes a sleeve part (7a) and a flat part (7b). An mounting flange (8) is provided on the edge of the mounting base (3). A connecting post (9) is screwed onto the right side of the housing (1). The shank of a screw (10) passes through the T-shaped bushing. The bushing (7), mounting flange (8) and connecting post (9) are screwed together. The flat plate (7b) is limited between the head of screw (10) and rubber sleeve (6). The mounting flange (8) is limited between rubber sleeve (6) and connecting post (9). The right housing (1) is equipped with a magneto motor (12). The magneto motor (12) includes a stator assembly (12a) fitted outside the crankshaft (13) and a flywheel assembly (12b) fitted outside the stator assembly (12a). The flywheel assembly (12b) is fixedly connected to the crankshaft (13). The fixed seat (3) is equipped with a fan impeller (14) fixedly connected to the flywheel assembly (12b).

2. The side-mounted water tank cooling structure for a motorcycle engine according to claim 1, characterized in that: The mounting post (5) has an annular mounting sleeve (11) protruding from its inner side, and the outer wall of the rubber sleeve (6) is recessed to form an annular groove. The rubber sleeve (6) is engaged in the annular groove by the annular mounting sleeve (11) and is axially limited by the mounting post (5).

3. The side-mounted water tank cooling structure for a motorcycle engine according to claim 1, characterized in that: The fixed base (3) has a connecting notch (15) at the bottom and side, and a plurality of air guide strips (16) are provided on the notch (15).

4. The side-mounted water tank cooling structure for a motorcycle engine according to claim 1, characterized in that: The flywheel assembly (12b) includes a housing (12b1), a magnet (12b2) disposed inside the housing (12b1), and a wheel sleeve (12b3) fixed in the middle of the housing (12b1). The wheel sleeve (12b3) is fixedly connected to the crankshaft (13), and the fan impeller (14) is fixedly connected to the housing (12b1).

5. The side-mounted water tank cooling structure for a motorcycle engine according to claim 1, characterized in that: The mounting posts (5) are provided in multiple ways. The water tank radiator (4) includes an upper water chamber (4a), a lower water chamber (4b), and a core (4c) disposed between the upper water chamber (4a) and the lower water chamber (4b). The edges of the upper water chamber (4a) and the lower water chamber (4b) are respectively provided with mounting plates (17), and the mounting posts (5) are provided on the mounting plates (17).

6. The side-mounted water tank cooling structure for a motorcycle engine according to claim 1, characterized in that: The water tank radiator (4) is covered with a protective cover (18), which is fixedly connected to the connecting protrusion (20) of the fixing seat (3) by screws (19).

7. The side-mounted water tank cooling structure for a motorcycle engine according to claim 6, characterized in that: The mounting base (3) has a mounting strip (21) protruding towards the water tank radiator (4) and abutting against the cover (18), and the connecting flange (20) is located on the outside of the mounting strip (21).

Citation Information

Patent Citations

  • Motorcycle air-water cooling engine

    CN201347792Y