CN219529764U

CN219529764U - Balance shaft structure of motorcycle engine

Info

Publication number: CN219529764U
Application number: CN202320504827.0U
Authority: CN
Inventors: 朱乾可; 肖鹏
Original assignee: Wenzhou Jingbin Auto Parts Co ltd
Current assignee: Wenzhou Jingbin Auto Parts Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-08-15
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a balance shaft structure of a motorcycle engine, which comprises a gear box, a gear package assembly, a crankshaft, an overrunning clutch and a balance shaft, wherein the gear package assembly, the crankshaft, the overrunning clutch and the balance shaft are arranged in the gear box, a first mounting hole, a second mounting hole and a third mounting hole are formed in the gear box, the first mounting hole is used for mounting a first bearing on the overrunning clutch, the second mounting hole is used for mounting a second bearing on the balance shaft, the third mounting hole is used for mounting a third bearing on the gear package assembly, the second mounting hole is positioned between the first mounting hole and the third mounting hole and is lower than the first mounting hole and the third mounting hole, and the balance shaft is arranged at the middle position below the gear box. The utility model has simple structure and reasonable design, and the balance shaft is arranged at the middle position below the gear box, so that the gravity center of the engine is downward, the engine structure is more compact, and the engine has dual purposes, and can play a role in driving the overrunning clutch disk teeth.

Description

Balance shaft structure of motorcycle engine

Technical Field

The utility model relates to the technical field of motorcycle engines, in particular to a balance shaft structure of a motorcycle engine.

Background

In order to effectively alleviate the vibration of the whole motorcycle and improve the driving comfort, a balance shaft technology is generally applied to an engine of the motorcycle. The single balance shaft adopts a single balance shaft, works in a gear transmission mode, drives a fixedly connected balance shaft driving gear through rotation of a crankshaft, and drives a balance shaft driven gear to drive the balance shaft. The single balance shaft can balance first-order vibration which is quite large in the whole vibration proportion, and the vibration of the engine can be obviously improved. Because the single balance shaft mode is simple in structure, occupied space is small, and the single balance shaft type engine is widely applied to single-cylinder and small-displacement engines. In order to better improve the comfort and stability of motorcycle driving, the applicant further improves the existing balance shaft structure.

Disclosure of Invention

The utility model overcomes the defects of the prior art, and provides a balance shaft structure of a motorcycle engine, which enables the gravity center of the engine to be downward by arranging the balance shaft at the middle position below a gear box, so that the engine structure is more compact, and one shaft is dual-purpose, and can play a role in driving the overrunning clutch disc teeth.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a balance shaft structure of motorcycle engine, including the gear box and locate gear package subassembly, bent axle, overrunning clutch, balance shaft in the gear box, be equipped with first mounting hole, second mounting hole and third mounting hole on the gear box, first mounting hole is used for installing the first bearing on the overrunning clutch, the second mounting hole is used for installing the epaxial second bearing of balance, the third mounting hole is used for installing the third bearing on the gear package subassembly, the second mounting hole is located between first mounting hole and the third mounting hole and is less than first mounting hole and third mounting hole, the gear box below intermediate position is located to the balance shaft.

Preferably, one end of the balance shaft is provided with a first balance block and a first gear, the other end of the balance shaft is provided with a second balance block and a second gear, the first gear is meshed with a first disc tooth on the overrunning clutch, and the second gear is meshed with a second disc tooth on the overrunning clutch.

Preferably, the balance shaft further comprises a motor and a driving gear, and the driving gear is meshed with the transmission gear on the balance shaft.

The utility model has the beneficial effects that:

the utility model has simple structure and reasonable design, and the balance shaft is arranged at the middle position below the gear box, so that the gravity center of the engine is downward, the engine structure is more compact, and the engine has dual purposes, and can play a role in driving the overrunning clutch disk teeth.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a gear box according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram showing the internal structure of a gearbox according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram showing the internal structure of a gearbox according to a second embodiment of the present utility model;

FIG. 5 is a schematic diagram of a structure reflecting a balance shaft according to an embodiment of the present utility model.

In the figure: 1. a gear box; 11. a first mounting hole; 12. a second mounting hole; 13. a third mounting hole; 2. a gear pack assembly; 21. a third bearing; 3. a crankshaft; 4. an overrunning clutch; 41. a first bearing; 42. a first disk tooth; 43. a second disk tooth; 5. a balance shaft; 51. a second bearing; 52. a first weight; 53. a first gear; 54. a second weight; 55. a second gear; 56. a transmission gear; 6. a motor; 61. and a drive gear.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-5, a balance shaft structure of a motorcycle engine comprises a gear box 1, a gear pack assembly 2, a crankshaft 3, an overrunning clutch 4 and a balance shaft 5, wherein the gear pack assembly 2, the crankshaft 3, the overrunning clutch 4 and the balance shaft 5 are arranged in the gear box 1, a first mounting hole 11, a second mounting hole 12 and a third mounting hole 13 are formed in the gear box 1, the first mounting hole 11 is used for mounting a first bearing 41 on the overrunning clutch 4, the second mounting hole 12 is used for mounting a second bearing 51 on the balance shaft 5, the third mounting hole 13 is used for mounting a third bearing 21 on the gear pack assembly 2, the second mounting hole 12 is positioned between the first mounting hole 11 and the third mounting hole 13 and is lower than the first mounting hole 11 and the third mounting hole 13, and the balance shaft 5 is arranged in the middle position below the gear box 1; one end of the balance shaft 5 is provided with a first balance block 52 and a first gear 53, the other end of the balance shaft 5 is provided with a second balance block 54 and a second gear 55, the first gear 53 is meshed with the first disc teeth 42 on the overrunning clutch 4, and the second gear 55 is meshed with the second disc teeth 43 on the overrunning clutch 4; also comprises a motor 6 and a driving gear 61, wherein the driving gear 61 is meshed with a transmission gear 56 on the balance shaft 5.

By adopting the technical scheme, in the utility model, the design thought of the scheme is that the position of the balance shaft 5 is arranged in the middle of the lower part of the gear box 1, so that the whole gravity center of the engine is downward, the appearance structure of the engine is more compact, the running is more stable when the engine is applied to a motorcycle, the whole vibration of the motorcycle is effectively relieved, and the driving comfort is improved. The above design scheme is that the balance shaft 5 is specifically installed at the position in the gear box 1, and the second installation hole 12 is arranged between the first installation hole 11 and the third installation hole 13 and lower than the first installation hole 11 and the third installation hole 13, so that the balance shaft 5 is placed under, specifically, the second installation hole 12 is used for installing the second bearing 51 on the balance shaft 5, and thus, the balance is ensured to be located at the specific position in the gear box 1. And moreover, the balance shaft 5 can play a role in driving the disc teeth of the overrunning clutch 4, so that the purpose of dual-purpose of one shaft is achieved, and the practicability is better.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a balance shaft structure of motorcycle engine, including gear box (1) and locate gear package subassembly (2) in gear box (1), bent axle (3), overrunning clutch (4), balance shaft (5), a serial communication port, be equipped with first mounting hole (11) on gear box (1), second mounting hole (12) and third mounting hole (13), first mounting hole (11) are used for installing first bearing (41) on overrunning clutch (4), second mounting hole (12) are used for installing second bearing (51) on balance shaft (5), third mounting hole (13) are used for installing third bearing (21) on gear package subassembly (2), second mounting hole (12) are located between first mounting hole (11) and third mounting hole (13) and are less than first mounting hole (11) and third mounting hole (13), gear box (1) below intermediate position is located in balance shaft (5).

2. A balance shaft structure of a motorcycle engine according to claim 1, characterized in that one end of the balance shaft (5) is provided with a first balance block (52) and a first gear (53), the other end of the balance shaft (5) is provided with a second balance block (54) and a second gear (55), the first gear (53) is meshed with a first disk tooth (42) on the overrunning clutch (4), and the second gear (55) is meshed with a second disk tooth (43) on the overrunning clutch (4).

3. A balance shaft structure of a motorcycle engine according to claim 1 or 2, characterized by further comprising a motor (6) and a drive gear (61), the drive gear (61) being meshed with a transmission gear (56) on the balance shaft (5).