Motorcycle engine starting pressure reduction structure

Abstract

The utility model belongs to the technical field of engine pressure reduction, and particularly discloses a motorcycle engine starting pressure reduction structure which comprises an engine frame, the top of the engine frame is fixedly connected with a limiting seat, a positioning mechanism is arranged in the limiting seat, a pressure reducing valve is detachably installed at the position of an air valve of the engine frame, and the pressure reducing valve is fixedly connected with the limiting seat. A guide rail frame is fixedly connected to the outer surface of the pressure reducing valve, a sliding frame is slidably connected to the outer surface of the guide rail frame through a manual position adjusting mechanism, and a positioning column is fixedly connected to the bottom of the sliding frame. According to the motorcycle engine starting pressure reducing structure, in the process of installing the pressure reducing valve, dependence on other tools (such as a screwdriver) is eliminated, the pressure reducing valve can be rapidly and conveniently installed and detached only through interaction of the operation handle and the sliding frame and cooperation of the positioning mechanism for stable limiting of the positioning column, and the operation is convenient. In the whole operation process, only corresponding components need to be pressed and pulled, extra tools are not needed, and the maintenance and repair process is greatly simplified.

Description

Technical Field

[0001] This application relates to the technical field of engine decompression, and specifically to a starting decompression structure for a motorcycle engine. Background Technique

[0002] The starting decompression structure of a motorcycle engine, also known as an engine starting decompression valve, aims to reduce the compression resistance generated by the engine during starting, thereby reducing the starting force required. This structure is usually used in single-cylinder motorcycle engines, especially those with large displacements or high compression ratios.

[0003] The existing engine starting decompression valves are generally installed at the position near the valve of the engine frame through bolt fasteners. The starting decompression valve installed with bolt fasteners requires the assistance of other tools (such as a screwdriver), which increases the complexity of maintenance and repair, increases the difficulty of disassembly and assembly, and is not conducive to its rapid inspection and maintenance. Utility Model Content

[0004] In view of this, the purpose of this utility model is to solve the deficiencies in the background technique and propose a starting decompression structure for a motorcycle engine to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a starting decompression structure for a motorcycle engine, including an engine frame. A limit seat is fixedly connected to the top of the engine frame. A positioning mechanism is arranged inside the limit seat. A decompression valve is detachably installed at the valve of the engine frame. A guide rail frame is fixedly connected to the outer surface of the decompression valve. A sliding frame is slidably connected to the outer surface of the guide rail frame through a manual positioning mechanism. A positioning column is fixedly connected to the bottom of the sliding frame. Positioning jacks are provided on the outer surface of the positioning column. There are two groups of positioning jacks and related components such as positioning rods, and they are symmetrically distributed.

[0006] Preferably, the positioning mechanism includes a positioning rod slidably connected to the inner surface of the limit seat. A strong spring is movably sleeved on the outer surface of the positioning rod. A pull frame is fixedly connected to the outer surface of the positioning rod. The positioning column can be stably limited by the positioning mechanism to avoid the offset of the positioning column.

[0007] Preferably, the manual positioning mechanism includes a frame shaft fixedly penetrating the inside of the guide rail frame. A swing plate is rotatably connected to the outer surface of the frame shaft.

[0008] Preferably, an operating handle is fixedly connected to the inner side of the swing plate. A through shaft is fixedly penetrated through the inner side of the swing plate.

[0009] Preferably, a connecting frame is rotatably connected to the outer surface of the through shaft. A connecting shaft is fixedly penetrated through the inner side of the connecting frame.

[0010] Preferably, a shifting rod is rotatably connected to the outer surface of the coupling shaft, and the bottom of the shifting rod is fixedly connected to the top of the carriage. A guiding cylinder is fixedly connected to the outer surface of the guide rail frame, and the inner surface of the guiding cylinder is slidably connected to the outer surface of the shifting rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the process of installing the pressure reducing valve of this motorcycle engine starting decompression structure, the dependence on other tools (such as screwdrivers) is eliminated. Only by operating the interaction between the operating handle and the carriage and cooperating with the positioning mechanism to stably limit the positioning column, the pressure reducing valve can be quickly and conveniently installed and disassembled. During the whole operation process, only corresponding components need to be pressed and pulled, without additional tools, greatly simplifying the maintenance and repair process.

[0013] 2. The newly designed structure of this motorcycle engine starting decompression structure adopts components such as positioning columns, positioning rods and strong springs, ensuring the stability and accurate alignment of the pressure reducing valve during installation. This helps to improve the reliability of the engine starting system and reduces operation problems or failures caused by improper installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of this application;

[0015] Figure 2 It is a schematic diagram of the surface structure of the guide rail frame of this application;

[0016] Figure 3 It is this application Figure 2 The enlarged view at a in;

[0017] Figure 4 It is a schematic diagram of the internal structure of the limit seat of this application.

[0018] Among them: 1. Engine frame; 2. Limit seat; 3. Positioning rod; 4. Strong spring; 5. Pulling frame; 6. Pressure reducing valve; 7. Guide rail frame; 8. Carriage; 9. Positioning column; 10. Positioning jack; 11. Frame shaft; 12. Swing plate; 13. Operating handle; 14. Through shaft; 15. Connecting frame; 16. Coupling shaft; 17. Shifting rod; 18. Guiding cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0020] Please refer to Figures 1-4 A decompression structure for starting a motorcycle engine, comprising an engine frame 1. A limit seat 2 is fixedly connected to the top of the engine frame 1. A positioning mechanism is arranged inside the limit seat 2. A decompression valve 6 is detachably installed at the valve of the engine frame 1. A guide rail frame 7 is fixedly connected to the outer surface of the decompression valve 6. A sliding frame 8 is slidably connected to the outer surface of the guide rail frame 7 through a manual positioning mechanism. A positioning column 9 is fixedly connected to the bottom of the sliding frame 8. A positioning jack 10 is formed on the outer surface of the positioning column 9.

[0021] Through the above technical solution, when the device is in use, the decompression valve 6 needs to be aligned with the valve of the engine first. The positioning column 9 can be pushed through the manual positioning mechanism to adjust the position of the positioning column 9. The positioning mechanism can be used to stably limit the positioning column 9, so as to achieve the effect of quickly installing the decompression valve 6.

[0022] Specifically, the positioning mechanism includes a positioning rod 3 slidably connected to the inner surface of the limit seat 2. A strong spring 4 is movably sleeved on the outer surface of the positioning rod 3. A pulling frame 5 is fixedly connected to the outer surface of the positioning rod 3.

[0023] Through the above technical solution, pulling the pulling frame 5 can synchronously pull the positioning rod 3. During this process, since both ends of the strong spring 4 are connected to the inner side of the pulling frame 5 and the inner side of the limit seat 2 respectively, the strong spring 4 will be pulled and compressed accordingly.

[0024] Specifically, the manual positioning mechanism includes a frame shaft 11 fixedly penetrating through the inner side of the guide rail frame 7. A swing plate 12 is rotatably connected to the outer surface of the frame shaft 11.

[0025] Through the above technical solution, when pressing down the operating handle 13, the swing plate 12 can be driven to rotate along the frame shaft 11, and the through shaft 14 will move synchronously during this period.

[0026] Specifically, an operating handle 13 is fixedly connected to the inner side of the swing plate 12. A through shaft 14 is fixedly penetrated through the inner side of the swing plate 12.

[0027] Through the above technical solution, the movement of the through shaft 14 means that it will have a pushing effect on the connecting frame 15, so that the connecting frame 15 will rotate along the through shaft 14.

[0028] Specifically, a connecting frame 15 is rotatably connected to the outer surface of the through shaft 14. A connecting shaft 16 is fixedly penetrated through the inner side of the connecting frame 15.

[0029] Through the above technical solution, after the connecting frame 15 is pushed and pulled, it will act on the displacement rod 17 through the connecting shaft 16, and the sliding frame 8 will be driven to slide along the surface of the guide rail frame 7 through the movement of the displacement rod 17.

[0030] Specifically, a displacement rod 17 is rotatably connected to the outer surface of the coupling shaft 16, and the bottom of the displacement rod 17 is fixedly connected to the top of the carriage 8. A guiding cylinder 18 is fixedly connected to the outer surface of the guide rail frame 7, and the inner surface of the guiding cylinder 18 is slidably connected to the outer surface of the displacement rod 17.

[0031] Through the above technical solution, the function of the guiding cylinder 18 is to relatively limit the displacement rod 17, so that the displacement rod 17 maintains a relatively stable longitudinal displacement trajectory during the movement.

[0032] Working principle: During the installation of the starting decompression structure of the motorcycle engine, the decompression valve 6 needs to be aligned with the valve of the engine first, and the two carriages 8 on the outer periphery are respectively aligned with the corresponding limit seats 2. Then, press down the operating handle 13 to drive the swing plate 12 to rotate along the frame shaft 11. During the swinging of the swing plate 12, it will drive the connecting frame 15 through the through shaft 14. During this period, the connecting frame 15 will rotate along the through shaft 14, and the displacement rod 17 will rotate along the coupling shaft 16. And the connecting frame 15 will push the displacement rod 17 through the coupling shaft 16, so that the displacement rod 17 moves down stably under the guiding action of the guiding cylinder 18 until the displacement rod 17 pushes the carriage 8 to slide down along the surface of the guide rail frame 7, and finally gradually pushes the positioning column 9 into the limit seat 2. During the inward movement of the positioning column 9, due to the inclined arc design at the bottom of the positioning column 9, the positioning column 9 will gradually push against the positioning rod 3 to move it outward at both ends. During this period, the strong spring 4 is compressed until when the positioning rod 3 moves to the positioning jack 10 of the positioning column 9, under the elastic reset action of the strong spring 4, the positioning rod 3 will stably insert into the positioning jack 10, thereby stably limiting the positioning column 9, that is, achieving the effect of quickly installing the decompression valve 6. When disassembling the decompression valve 6, just pull the two pull frames 5 outward forcefully to make the positioning rod 3 withdraw from the positioning jack 10, then the operating handle 13 can be toggled upward to release the restriction on the positioning column 9, thereby conveniently removing the decompression valve 6. No other tools are needed during the whole disassembly and assembly process, which is convenient and fast.

[0033] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A motorcycle engine starting decompression structure, comprising an engine frame (1), characterized in that: The top of the engine frame (1) is fixedly connected to a limit seat (2), a positioning mechanism is arranged inside the limit seat (2), a pressure reducing valve (6) is detachably mounted at the valve of the engine frame (1), the outer surface of the pressure reducing valve (6) is fixedly connected to a guide rail frame (7), the outer surface of the guide rail frame (7) is slidably connected to a slide frame (8) via a manual positioning mechanism, the bottom of the slide frame (8) is fixedly connected to a positioning column (9), and a positioning socket (10) is provided on the outer surface of the positioning column (9).

2. A motorcycle engine starting decompression structure according to claim 1, characterized in that: The positioning mechanism comprises a positioning rod (3) slidably connected to the inner surface of the limiting seat (2), a strong spring (4) is movably sleeved on the outer surface of the positioning rod (3), and a pull frame (5) is fixedly connected to the outer surface of the positioning rod (3).

3. A motorcycle engine starting decompression structure according to claim 1, characterized in that: The manual positioning mechanism comprises a frame shaft (11) fixedly arranged on the inner side of the guide rail frame (7), and a swing plate (12) is rotatably connected to the outer surface of the frame shaft (11).

4. A motorcycle engine starting decompression structure according to claim 3, characterized in that: An operating handle (13) is fixedly connected to the inner side of the swing plate (12), and a through shaft (14) is fixedly penetrated through the inner side of the swing plate (12).

5. A motorcycle engine starting decompression structure according to claim 4, characterized in that: The outer surface of the through shaft (14) is rotatably connected with a connecting frame (15), and the inner side of the connecting frame (15) is fixedly penetrated with a connecting shaft (16).

6. A motorcycle engine starting decompression structure according to claim 5, characterized in that: The outer surface of the connecting shaft (16) is rotatably connected to a shift rod (17), and the bottom of the shift rod (17) is fixedly connected to the top of the slide (8); the outer surface of the guide rail frame (7) is fixedly connected to a guide cylinder (18), and the inner surface of the guide cylinder (18) is slidably connected to the outer surface of the shift rod (17).

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