Gear shifting mechanism assembly

Abstract

The utility model discloses a gear shifting mechanism assembly and belongs to the technical field of gearboxes. Comprising a gearbox body, a forward gear shifting mechanism and a reverse gear shifting mechanism, a forward gear shifting fork and a reverse gear shifting fork are arranged in the gearbox body, the forward gear shifting mechanism is connected with the forward gear shifting fork and drives the forward gear shifting fork to move, and the reverse gear shifting mechanism is connected with the reverse gear shifting fork and drives the reverse gear shifting fork to move. The forward gear shifting mechanism of the gear shifting mechanism assembly drives the forward gear shifting fork to move, then switching of a high gear, a middle gear and a low gear of a forward gear is achieved, the reverse gear shifting mechanism can achieve gear shifting of a reverse gear, the forward gear and the reverse gear are separated, misoperation is avoided when the snowfield motorcycle runs at a high speed and needs to switch the high gear, the middle gear and the low gear, and the service life of the snowfield motorcycle is prolonged. Therefore, the problem that the gearbox is damaged due to misoperation is avoided.

Description

Technical Field

[0001] The utility model discloses a gear shifting mechanism assembly, belonging to the technical field of gearboxes. Background Art

[0002] A snowmobile is a vehicle designed for use on snow or other slippery surfaces. They are usually equipped with wide tracks and a powerful engine to provide good traction and travel on snow. This vehicle is widely used in winter sports, snow rescue, forestry and snow patrol.

[0003] The gearbox of a snowmobile is usually a CVT gearbox, which has three gears, high, medium and low, and a reverse gear. The forward gear and reverse gear of the existing snowmobile are operated by the same joystick. When operating the high, medium and low gears at high speed, it is easy to shift into reverse gear, which will cause damage to the gearbox. Secondly, the joystick of the gearbox of the existing snowmobile is directly connected to the gearbox fork through a rigid connection. After using it for a period of time, it is easy to shift gears inappropriately, which affects the transmission efficiency of the gearbox and aggravates the wear of the gearbox. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a shift mechanism assembly which separates the reverse gear and the forward gear and can avoid misoperation to the reverse gear state when switching the forward gear.

[0005] The technical solution adopted by the utility model to solve the technical problem is: the shift mechanism assembly is characterized by comprising a gearbox body, a forward gear shift mechanism and a reverse gear shift mechanism, a forward gear shift fork and a reverse gear shift fork are arranged in the gearbox body, the forward gear shift mechanism is connected to the forward gear shift fork and drives the forward gear shift fork to move, and the reverse gear shift mechanism is connected to the reverse gear shift fork and drives the reverse gear shift fork to move.

[0006] Preferably, the forward gear shift mechanism includes a gear shift lever, a gear shift pull rod and a limit assembly, the limit assembly is mounted on the gearbox body, the gear shift lever is connected to the limit assembly, one end of the gear shift pull rod is rotatably connected to the gear shift lever, and the other end is rotatably connected to the forward gear shift fork.

[0007] Preferably, the limit assembly includes a shift panel and a limit torsion spring, the shift panel is provided with a shift limit opening, a plurality of concave limit portions are provided on one side of the shift limit opening, the end of the shift lever passes through the shift limit opening and is rotatably connected to the gearbox body, and a limit torsion spring is provided between the shift lever and the gearbox body to allow the shift lever to enter the limit portion.

[0008] Preferably, the bottom of the gear shift lever is connected to the gearbox body via a spherical bearing.

[0009] Preferably, it further comprises an elastic connection component, which is arranged between the forward gear shift mechanism and the forward gear shift fork.

[0010] Preferably, the elastic connection assembly includes a connecting plate arranged on the forward gear fork, a toggle plate connected to the forward gear shift mechanism, and a shift torsion spring. The connecting plate and the toggle plate are rotatably connected. A toggle block is arranged on the connecting plate, a toggle groove is arranged on the toggle plate, the toggle block is arranged in the toggle groove, a movable gap is arranged between the toggle block and the toggle groove, and the shift torsion spring is arranged between the connecting plate and the toggle plate.

[0011] Preferably, the reverse gear shift mechanism comprises a reverse gear motor and a connecting rod assembly, and the output shaft of the reverse gear motor is connected to the reverse gear fork through the connecting rod assembly.

[0012] Preferably, the connecting rod assembly includes a reverse gear lever, a reverse gear connecting rod and a reverse gear operating lever, one end of the reverse gear operating lever is fixedly connected to the reverse gear fork, the reverse gear lever is connected to the output shaft of the reverse gear motor and rotates therewith, one end of the reverse gear connecting rod is rotatably connected to the reverse gear operating lever, and the other end is rotatably connected to the reverse gear lever.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The forward gear shift mechanism of the shift mechanism assembly drives the forward gear fork to move, thereby realizing the switching of the forward gear, the high, medium and low gears. The reverse gear shift mechanism can realize the shifting of the reverse gear, so that the forward gear is separated from the reverse gear, thereby avoiding the problem of engaging the reverse gear due to misoperation when the snowmobile is traveling at high speed and needs to switch between the high, medium and low gears, thereby avoiding damage to the gearbox due to misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of a shift mechanism assembly;

[0016] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 A three-dimensional schematic diagram of the shift mechanism assembly from another perspective;

[0018] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0019] Figure 5 is a three-dimensional schematic diagram of a forward gear shift mechanism;

[0020] Figure 6 for Figure 5 A partial enlarged view of point C in the middle.

[0021] In the figure: 1. gearbox body; 2. shift panel; 201. shift limiter; 3. shift lever; 4. connector; 5. shift mounting rod; 6. joint bearing; 7. shift rod; 8. toggle plate; 801. toggle slot; 9. shift torsion spring; 10. forward gear fork; 1001. toggle block; 11. reverse motor; 12. reverse lever; 13. reverse connecting rod; 14. reverse lever. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0023] Figures 1 to 6 It is the best embodiment of the utility model, and the following Figures 1 to 6 The utility model is further described.

[0024] The shift mechanism assembly includes a gearbox body 1, a forward gear shift mechanism and a reverse gear shift mechanism. A forward gear shift fork 10 and a reverse gear shift fork are arranged in the gearbox body 1. The forward gear shift mechanism is connected to the forward gear shift fork 10 and drives it to move. The reverse gear shift mechanism is connected to the reverse gear shift fork and drives it to move. The forward gear shift mechanism of the shift mechanism assembly drives the forward gear shift fork 10 to move, thereby realizing the switching of the forward gear, the high, medium and low gears. The reverse gear shift mechanism can realize the shifting of the reverse gear, so that the forward gear is separated from the reverse gear, avoiding the problem of misoperation when the snowmobile is running at high speed and needs to switch the high, medium and low gears, and engaging the reverse gear, thereby avoiding the damage of the gearbox due to misoperation.

[0025] Specific: such as Figure 1-6 As shown, the forward gear shift mechanism is arranged on the top of the gearbox body 1, and the reverse gear shift mechanism is arranged on one side of the upper part of the gearbox body 1, wherein the forward gear shift mechanism has three gear positions: high, medium and low.

[0026] The forward gear shift mechanism includes a gear shift lever 3, a gear shift pull rod 7, a limit assembly and an elastic connection assembly. The limit assembly is installed on the top of the gearbox body 1. The lower end of the gear shift lever 3 passes through the limit assembly and is rotatably connected to the gearbox body 1. One end of the gear shift pull rod 7 is rotatably connected to the gear shift lever 3, and the other end is connected to the forward gear fork 10 through an elastic connection assembly.

[0027] The limit assembly includes a shift panel 2 and a limit torsion spring. The lower end of the shift lever 3 is hinged with a connecting piece 4. The lower end of the connecting piece 4 is hinged with a shift mounting rod 5. The shift mounting rod 5 is connected to the gearbox body 1 through a joint bearing 6. The limit torsion spring is arranged between the gearbox body 1 and the shift mounting rod 5. A shift limit opening 201 is arranged on the shift panel 2. A concave limit portion is arranged on one side of the shift limit opening 201. The limit torsion spring makes the shift lever 3 move in a direction close to the limit portion, so that the shift lever 3 is reset to the corresponding limit portion. In this embodiment, there are three limit portions, corresponding to high, medium and low gears respectively.

[0028] One corresponding end of the shift rod 7 is hinged to the connecting member 4 , thereby realizing a rotatable connection with the shift lever 3 .

[0029] The elastic connection assembly includes a connection plate arranged on the forward gear shift fork 10, a toggle plate 8 connected to the forward gear shift mechanism, and a shift torsion spring 9. The lower part of the connection plate is fixedly connected to the end surface corresponding to the forward gear shift fork 10, the connection plate is hinged to the toggle plate 8, the corresponding end of the shift pull rod 7 is rotatably connected to the upper part of the toggle plate 8, a toggle groove 801 is arranged on one side of the toggle plate 8, a toggle block 1001 is arranged on one side of the connection plate, the toggle block 1001 is arranged in the toggle groove 801, and a gap is arranged between the toggle block 1001 and the toggle groove 801, even if the connection plate and the toggle plate 8 can rotate relatively, the shift torsion spring 9 is arranged between the connection plate and the toggle plate 8, so that the connection plate and the toggle plate 8 are elastically connected.

[0030] When the gear shifting operation is performed, the gear shifting rod 7 drives the toggle plate 8 to move, and the toggle plate 8 drives the connecting plate to move through the gear shifting torsion spring 9, thereby driving the gear shifting fork 10 to rotate, so as to achieve the gear shifting operation of high, medium and low gears. Since the toggle plate 8 and the connecting plate can rotate relative to each other, the toggle plate 8 and the connecting plate are allowed to have a relative movement, thereby ensuring reliable gear shifting.

[0031] The reverse gear shifting mechanism comprises a reverse gear motor 11 and a connecting rod assembly. The reverse gear motor 11 is mounted on the gearbox body 1. The output shaft of the reverse gear motor 11 is connected to the reverse gear fork through the connecting rod assembly, thereby implementing the reverse gear operation.

[0032] The connecting rod assembly includes a reverse gear lever 12, a reverse gear connecting rod 13 and a reverse gear operating rod 14. One end of the reverse gear lever 12 is fixedly connected to the output shaft of the reverse gear motor 11, and the reverse gear lever 12 is axially arranged along the output shaft of the reverse gear motor 11. One end of the reverse gear operating rod 14 is fixedly connected to the reverse gear fork, and the reverse gear operating rod 14 is radially arranged along the rotating shaft of the reverse gear fork. The reverse gear operating rod 14 is located directly above the reverse gear lever 12, and the reverse gear connecting rod 13 is arranged between the reverse gear operating rod 14 and the reverse gear connecting rod 12. The upper end of the reverse gear connecting rod 13 is hinged to the other end of the reverse gear operating rod 14, and the lower end of the reverse gear connecting rod 13 is hinged to the other end of the reverse gear connecting rod 12.

[0033] The reverse gear motor 11 drives the reverse gear connecting rod 12 to rotate, and then drives the reverse gear operating rod 14 to move through the connecting rod 13, thereby realizing the reverse gear operation.

[0034] Furthermore, a worm gear mechanism is provided between the output shaft of the reverse motor 11 and the reverse connecting rod 13, the worm wheel of the worm gear mechanism is mounted on the output shaft of the reverse motor 11, the worm of the worm gear mechanism is rotatably mounted on the gearbox body 1, the worm wheel is meshed with the worm, and the rotating shaft of the worm wheel is fixedly connected to one end of the reverse connecting rod 12, thereby ensuring that the reverse gear shifting is more stable.

[0035] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. The gear shifting mechanism assembly is characterized by: The invention comprises a gearbox body (1), a forward gear shift mechanism and a reverse gear shift mechanism. A forward gear shift fork (10) and a reverse gear shift fork are arranged in the gearbox body (1). The forward gear shift mechanism is connected to the forward gear shift fork (10) and drives the forward gear shift fork to move. The reverse gear shift mechanism is connected to the reverse gear shift fork and drives the reverse gear shift fork to move.

2. The shift mechanism assembly according to claim 1, characterized in that: The forward gear shift mechanism comprises a gear shift lever (3), a gear shift pull rod (7) and a limit assembly, wherein the limit assembly is mounted on the gearbox body (1), the gear shift lever (3) is connected to the limit assembly, one end of the gear shift pull rod (7) is rotatably connected to the gear shift lever (3), and the other end is rotatably connected to the forward gear shift fork (10).

3. The shift mechanism assembly according to claim 2, characterized in that: The limit assembly comprises a shift panel (2) and a limit torsion spring, the shift panel (2) being provided with a shift limit opening (201), a plurality of inwardly concave limit portions being provided on one side of the shift limit opening (201), the end of the shift lever (3) passing through the shift limit opening (201) being rotatably connected to the gearbox body (1), and a limit torsion spring being provided between the shift lever (3) and the gearbox body (1) so that the shift lever (3) enters the limit portion.

4. The shift mechanism assembly according to claim 3, characterized in that: The bottom of the gearshift lever (3) is connected to the gearbox body (1) via a joint bearing (6).

5. The shift mechanism assembly according to claim 1, characterized in that: It also includes an elastic connection component, which is arranged between the forward gear shifting mechanism and the forward gear shift fork (10).

6. The shift mechanism assembly according to claim 5, characterized in that: The elastic connection assembly comprises a connecting plate arranged on a forward gear shift fork (10), a toggle plate (8) connected to a forward gear shift mechanism, and a gear shift torsion spring (9); the connecting plate and the toggle plate (8) are rotatably connected; a toggle block (1001) is arranged on the connecting plate; a toggle groove (801) is arranged on the toggle plate (8); the toggle block (1001) is arranged in the toggle groove (801); a movable gap is arranged between the toggle block (1001) and the toggle groove (801); and the gear shift torsion spring (9) is arranged between the connecting plate and the toggle plate (8).

7. The shift mechanism assembly according to claim 1, characterized in that: The reverse gear shifting mechanism comprises a reverse gear motor (11) and a connecting rod assembly, and the output shaft of the reverse gear motor (11) is connected to the reverse gear shift fork via the connecting rod assembly.

8. The shift mechanism assembly according to claim 7, characterized in that: The connecting rod assembly comprises a reverse gear lever (12), a reverse gear connecting rod (13) and a reverse gear operating rod (14); one end of the reverse gear operating rod (14) is fixedly connected to a reverse gear fork; the reverse gear lever (12) is connected to an output shaft of a reverse gear motor (11) and rotates therewith; one end of the reverse gear connecting rod (13) is rotatably connected to the reverse gear operating rod (14) and the other end is rotatably connected to the reverse gear lever (12).

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