Engine transmission system with reverse gear

Abstract

The invention relates to the technical field of motorcycle engines, and discloses an engine transmission system with a reverse gear, which comprises a crankshaft connecting rod assembly, a main and auxiliary shaft combination, a clutch assembly, an intermediate shaft combination and an output shaft combination, a driving gear is arranged on the crankshaft connecting rod assembly, the center line of the main and auxiliary shaft combination and the center line of the middle shaft combination are both arranged in parallel relative to the center line of the crankshaft connecting rod assembly, the clutch assembly is arranged at one end of the main and auxiliary shaft combination, and the clutch assembly is meshed with the driving gear. The transmission driven teeth on the intermediate shaft combination are meshed with the transmission driving teeth on the main and auxiliary shaft combination, and the engine is high in universality and good in driving comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycle engines, and particularly to an engine transmission system with a reverse gear. Background Art

[0002] With the growth of motorcycle consumption demand in recent years, the enhancement of the recreational attribute of motorcycles, and the superimposition of factors such as the market demand for automatic transmissions in passenger three-wheel motorcycles, the riding threshold has become a major consideration for emerging consumers when purchasing motorcycles. An automatic transmission can not only solve this problem but also be a strong support for the future intelligent and personalized competition of motorcycles. The hybridization of motorcycles and further safety upgrades also have demands for the research and development of automatic transmission models.

[0003] Chinese patent document CN208089403U discloses a three-wheel motorcycle, a transmission system, and a multi-functional engine, including a heat engine, an internal transmission mechanism, an internal reversing mechanism, and an internal auxiliary transmission mechanism connected in sequence longitudinally; the internal auxiliary transmission mechanism includes a longitudinally arranged input shaft and an output shaft, at least two pairs of gear pairs are arranged between the input shaft and the output shaft, a synchronizer is also arranged on the input shaft or the output shaft, and a reverse gear device is arranged between the synchronizer and the input shaft or the output shaft.

[0004] The existing technology has the following deficiencies: At present, the main and auxiliary shafts, transmission mechanisms, reverse gear devices, etc. in motorcycles are arranged inside the engine, occupying a large amount of internal space of the engine and having a large volume, resulting in poor versatility and poor comfort during vehicle driving. Summary of the Invention

[0005] In order to solve the technical problems of poor engine versatility and poor driving comfort, the present invention provides an engine transmission system with a reverse gear, including a crankshaft connecting rod assembly, a main and auxiliary shaft combination, a clutch assembly, an intermediate shaft combination, and an output shaft combination. The intermediate shaft combination and the output shaft combination are meshed through bevel gears. It is characterized in that a driving gear is arranged on the crankshaft connecting rod assembly, the center lines of the main and auxiliary shaft combination and the intermediate shaft combination are both arranged parallel to the center line of the crankshaft connecting rod assembly. One end of the main and auxiliary shaft combination is provided with the clutch assembly, the clutch assembly is meshed with the driving gear, and the driven transmission gear on the intermediate shaft combination is meshed with the driving transmission gear on the main and auxiliary shaft combination.

[0006] In order to facilitate the switching between reverse and forward gears, a forward gear bevel gear, a reverse gear bevel gear, and a shift engaging sleeve are arranged on the intermediate shaft combination. The shift engaging sleeve is connected to the fork of the reverse gear shift drum component in a matching manner, and the reverse gear shift drum component is rotated to control the left and right movement of the shift engaging sleeve for shifting gears.

[0007] Preferably, the reverse gear shift drum component is located at a parallel position of the intermediate shaft combination.

[0008] In order to facilitate gear position positioning, a reverse gear shift drum positioning mechanism is provided on the reverse gear shift drum component.

[0009] In order to facilitate power output, an output bevel gear is provided on the output shaft assembly, and the output bevel gear meshes with the forward gear bevel gear and the reverse gear bevel gear on the intermediate shaft assembly.

[0010] The present invention has the following beneficial effects: The existing reverse gear mechanism has a complex structure and is relatively offset from the center of the engine, resulting in poor use comfort. However, the present invention enables the engine to achieve center output while realizing the reverse gear function, with the overall center of gravity concentrated, high transmission efficiency, good comfort and safety of the whole vehicle during driving. By reducing the space occupied by the shift mechanism in the engine, it has strong universality with the existing vehicle frame; the newly added shift reverse gear mechanism has a simple structure and directly shifts gears by rotating the shift drum, further improving driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of an embodiment of the engine transmission system with a reverse gear of the present invention; Figure 2 It is a schematic diagram of an embodiment of the engine transmission system with a reverse gear of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The following is a more detailed description through specific embodiments: 1. The reference numerals in the accompanying drawings of the specification include: crankshaft connecting rod assembly 1, main and auxiliary shaft assembly 2, clutch assembly 3, intermediate shaft assembly 4, output shaft assembly 5, driving gear 6, driving transmission gear 7, driven transmission gear 8, forward gear bevel gear 9, reverse gear bevel gear 10, shift engaging sleeve 11, reverse gear shift drum component 12, reverse gear shift drum positioning mechanism 13, output bevel gear 14, shift mechanism 15.

[0013] Embodiment 1 As Figure 1 and Figure 2 shown, an engine transmission system with a reverse gear includes a crankshaft connecting rod assembly 1, a main and auxiliary shaft assembly 2, a clutch assembly 3, an intermediate shaft assembly 4, an output shaft assembly 5 and a shift mechanism 15. The intermediate shaft assembly 4 and the output shaft assembly 5 are engaged by bevel gears. A driving gear 6 is provided on the crankshaft connecting rod assembly 1. The center lines of the main and auxiliary shaft assembly 2 and the intermediate shaft assembly 4 are both arranged parallel to the center line of the crankshaft connecting rod assembly 1. One end of the main and auxiliary shaft assembly 2 is provided with the clutch assembly 3, and the gear of the clutch assembly 3 meshes with the driving gear 6. A driving transmission gear 7 is provided at the other end of the main and auxiliary shaft assembly 2, and the driven transmission gear 8 on the intermediate shaft assembly 4 meshes with the driving transmission gear 7 on the main and auxiliary shaft assembly 2.

[0014] The intermediate shaft assembly 4 is provided with a forward gear bevel gear 9, a reverse gear bevel gear 10 and a shift sleeve 11. The shift sleeve 11 is connected to the fork of the reverse gear shift drum assembly 12 in a mating manner. Rotating the reverse gear shift drum assembly 12 controls the left and right movement of the shift sleeve 11, thereby realizing the switching between the reverse gear and the forward gear.

[0015] The reverse gear shift drum assembly 12 is located in a parallel position to the intermediate shaft assembly 4, and the center line of the reverse gear shift drum assembly 12 is parallel to the center line of the intermediate shaft assembly 4; the reverse gear shift drum assembly 12 is provided with a reverse gear shift drum positioning mechanism 13 for gear positioning.

[0016] The output shaft assembly 5 is provided with an output bevel gear 14, and the output bevel gear 14 meshes with the forward gear bevel gear 9 and the reverse gear bevel gear 10 on the intermediate shaft assembly 4 to finally output power.

[0017] The above are only embodiments of the present invention. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail here. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the prior arts in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. An engine transmission system with a reverse gear, comprising a crankshaft connecting rod assembly (1), a main and auxiliary shaft combination (2), a clutch assembly (3), an intermediate shaft combination (4) and an output shaft combination (5), wherein the intermediate shaft combination (4) and the output shaft combination (5) are engaged by bevel gears, and it is characterized in that, An active gear (6) is provided on the crankshaft connecting rod assembly (1). The centerlines of the main and auxiliary shaft combination (2) and the intermediate shaft combination (4) are arranged parallel to the centerline of the crankshaft connecting rod assembly (1). One end of the main and auxiliary shaft combination (2) is provided with the clutch assembly (3), and the clutch assembly (3) meshes with the active gear (6). The transmission driven gear (8) on the intermediate shaft combination (4) meshes with the transmission active gear (7) on the main and auxiliary shaft combination (2).

2. The engine transmission system with reverse gear according to claim 1, wherein: A forward gear bevel gear (9), a reverse gear bevel gear (10) and a shift sleeve (11) are provided on the intermediate shaft combination (4). The shift sleeve (11) is connected to the fork of the reverse gear shift drum component (12) in a mating manner. Rotating the reverse gear shift drum component (12) controls the left and right movement of the shift sleeve (11) to shift gears.

3. The engine transmission system with reverse gear according to claim 2, wherein: The reverse gear shift drum component (12) is located at a parallel position to the intermediate shaft combination (4).

4. The engine transmission system with reverse gear according to claim 3, characterized in that: A reverse gear shift drum positioning mechanism (13) is provided on the reverse gear shift drum component (12).

5. The engine transmission system with reverse gear according to any one of claims 2-4, characterized in that: An output bevel gear (14) is provided on the output shaft combination (5), and the output bevel gear (14) meshes with the forward gear bevel gear (9) and the reverse gear bevel gear (10) on the intermediate shaft combination (4).

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