Motorcycle and engine gear shift lever mechanism

Abstract

The present invention provides a motorcycle engine shift lever mechanism. When the motorcycle shifts gears, the shift lever assembly drags the positioning star wheel to rotate. The limit pin extended from the gear shift slider avoids the first shift pin close to it through the first shift pin gap when the positioning star wheel rotates. After the positioning star wheel rotates a shift pin angle, the relative positions of the gear shift slider and the positioning star wheel change. The limit pin moves from the middle of the positioning star wheel to the edge. The limit pin is arranged to abut against the second shift pin adjacent to the first shift pin in the moving direction through the limit abutment surface, so as to avoid the situation where the positioning star wheel is subjected to rotational inertia and produces continuous gear shifting. The limit pin has a simple structure, occupies a small space, and has a simplified structure. The present invention also provides a motorcycle.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycles, and more particularly to a motorcycle and an engine shift lever mechanism thereof. Background Art

[0002] The motorcycle shift mechanism drives the shift lever assembly to rotate by pedaling the shift lever. The rotation of the shift lever assembly drags the positioning star wheel, and then the positioning rocker arm drives the speed change drum to rotate, thereby achieving the gear shifting effect.

[0003] In the prior art, the shift lever assembly drags the positioning star wheel to rotate. When the positioning star wheel rotates, after rotating a detent angle, due to inertia, it will continuously rotate multiple detent angles, causing the motorcycle to shift gears continuously. At present, in order to avoid continuous shifting, limit blocks are added on both sides of the shift lever assembly in the width direction to limit the rotation of the positioning star wheel. Since the limit blocks increase the width direction of the shift lever assembly, it occupies a large space when rotating.

[0004] At the same time, when the shift lever assembly drags the positioning star wheel to rotate, the shift dog extending from the upper gear shift slider is crimped into place with the shift pin on the positioning star wheel, and its strength and structural dimensions need to be guaranteed. The current stamped structure of the shift dog is difficult to meet the process requirements.

[0005] Therefore, how to optimize the product structure of a motorcycle shift lever mechanism is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] In view of this, the present invention provides a motorcycle engine shift lever mechanism to optimize the product structure of the motorcycle shift lever mechanism; the present invention also provides a motorcycle.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A motorcycle engine shift lever mechanism comprises a shift lever assembly and a positioning star wheel toggled by the shift lever assembly, wherein the shift lever assembly is equipped with a gear shifting slider;

[0009] The end of the gear shift slider away from the gear shift claw extends out a limit pin,

[0010] The limit pin has a first deflecting pin gap for avoiding the first deflecting pin of the positioning star wheel when the positioning star wheel changes gears;

[0011] and a limiting abutting surface abutting against a second deflecting pin close to the first deflecting pin along the rotation direction of the positioning star wheel after the positioning star wheel completes a gear shift.

[0012] Preferably, in the above motorcycle engine shift lever mechanism, the limit pin further has a second detent pin gap for avoiding the second detent pin during the return process of the positioning star wheel.

[0013] Preferably, in the above motorcycle engine shift lever mechanism, the avoidance end surface of the limit pin and the first shift pin opposite to each other is a curved avoidance end surface.

[0014] Preferably, in the above motorcycle engine shift lever mechanism, the limit abutment surface is a plane limit abutment surface, and the plane limit abutment surface and the arc surface avoid end face arc transition.

[0015] Preferably, in the above motorcycle engine shift lever mechanism, the limit pin is a columnar limit pin extending from the end surface of the gear shift slider.

[0016] Preferably, in the above motorcycle engine shift lever mechanism, the limit pins are symmetrically arranged along the width direction of the gear shift slider.

[0017] Preferably, in the above motorcycle engine shift lever mechanism, the shift finger is a shift finger of a powder metallurgy structure.

[0018] A motorcycle is provided with an engine shift lever mechanism, wherein the engine shift lever mechanism is the motorcycle engine shift lever mechanism as described in any one of the above.

[0019] The motorcycle engine shift lever mechanism provided by the present invention comprises a shift lever assembly and a positioning star wheel toggled by the shift lever assembly, wherein a gear shifting slider is mounted on the shift lever assembly; a limit pin is extended from one end of the gear shifting slider away from its shifting claw, and the limit pin has a first shifting pin gap for avoiding a first shifting pin of the positioning star wheel when the positioning star wheel shifts gears; and a limit abutting surface for abutting a second shifting pin close to the first shifting pin along the rotation direction of the positioning star wheel after the positioning star wheel completes a shifting. When the motorcycle changes gears, the gear shift lever assembly drags the positioning star wheel to rotate. The limit pin extended from the gear shift slider avoids the adjacent first shift pin through the first shift pin gap when the positioning star wheel rotates. After the positioning star wheel rotates through a shift pin angle, the relative positions of the gear shift slider and the positioning star wheel change, and the limit pin moves from the middle to the edge of the positioning star wheel. The limit pin is arranged in the moving direction to abut against the second shift pin adjacent to the first shift pin through the limit abutment surface, so as to avoid the continuous gear shifting caused by the rotational inertia of the positioning star wheel. The limit pin has a simple structure, occupies a small space, and has a simplified structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the arrangement structure of the motorcycle engine shift lever mechanism provided by the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the slider for the mid-gear position;

[0023] Figure 3 for Figure 1 A schematic diagram of the first position of the gearshift lever mechanism of a motorcycle engine during the gearshift process;

[0024] Figure 4 for Figure 3 A schematic diagram of a second position of a motorcycle engine shift lever mechanism during a shift up process;

[0025] Figure 5 for Figure 4 A schematic diagram of the position of the shift lever mechanism of a motorcycle engine during the return process after shifting up;

[0026] Figure 6 for Figure 1 A schematic diagram of the first position of the gearshift lever mechanism of a motorcycle engine during a downshift process;

[0027] Figure 7 for Figure 6 A schematic diagram of a second position of a motorcycle engine shift lever mechanism during a downshift process;

[0028] Figure 8 for Figure 7 Schematic diagram of the position of the shift lever mechanism of a motorcycle engine during the return process after downshifting. DETAILED DESCRIPTION

[0029] The invention discloses a motorcycle engine shift lever mechanism, which optimizes the product structure of the motorcycle shift lever mechanism; the invention also provides a motorcycle.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 5 As shown, Figure 1 A schematic diagram of the arrangement structure of the motorcycle engine shift lever mechanism provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the slider for the mid-gear position; Figure 3 for Figure 1 A schematic diagram of the first position of the gearshift lever mechanism of a motorcycle engine during the gearshift process; Figure 4 for Figure 3 A schematic diagram of a second position of a motorcycle engine shift lever mechanism during a shift up process; Figure 5 for Figure 4 Schematic diagram of the position of the shift lever mechanism of a motorcycle engine during the return process after shifting up.

[0032] The present embodiment provides a motorcycle engine shift lever mechanism, comprising a shift lever assembly 1 and a positioning star wheel 3 shifted by the shift lever assembly 1, wherein a gear shift slider 2 is mounted on the shift lever assembly 1; a limit pin 21 extends from one end of the gear shift slider 2 away from its shift shift claw 22, and the limit pin 21 has a first shift pin gap 3-1 for avoiding the first shift pin 3-31 of the positioning star wheel 3 when the positioning star wheel 3 shifts gears; and a limit abutment surface for abutting against the second shift pin 3-32 close to the first shift pin 3-31 along the rotation direction of the positioning star wheel 3 after the positioning star wheel 3 completes a gear shift.

[0033] When the motorcycle changes gears, the shift pedal is used to rotate the shift lever assembly 1, and then the shift lever assembly 1 drags the positioning star wheel 3 to rotate. The limit pin 21 extended from the gear shift slider 2 avoids the adjacent first shift pin 3-31 through the first shift pin gap 3-1 when the positioning star wheel 3 rotates.

[0034] After the positioning star wheel 3 rotates a detent angle, when the shift lever assembly rotates to the maximum angle, the roller of the positioning rocker arm 4 is at the lowest point of the positioning star wheel 3. Due to the action of inertia, the positioning star wheel may continue to rotate. At this time, the relative positions of the gear shift slider 2 and the positioning star wheel 3 change, and the limit pin 21 moves from the middle to the edge of the positioning star wheel 3, and its position is located between the second detent pin 3-32 adjacent to the first detent pin 3-31 and the first detent pin 3-31. The limit pin 21 is set in the moving direction to abut against the second detent pin 3-2 through the limit abutment surface 3-2, so as to avoid the continuous gear shifting caused by the rotational inertia of the positioning star wheel 3. The limit pin 21 has a simple structure, occupies a small space, and has a simplified structure.

[0035] In a specific embodiment of the present case, the limiting pin 21 further has a second pin gap 3 - 3 for avoiding the second pin 3 - 32 during the returning process of the positioning star wheel 3 .

[0036] After the shifting is completed, the shift lever assembly 1 and the positioning star wheel 3 return to the position to be shifted. During the previous shifting process, the limit pin 21 abuts against the second shift pin 3-32 after the positioning star wheel 3 rotates. When returning, the limit pin 21 returns from the edge of the positioning star wheel 3 to the middle. At this time, the abutment and jamming between the second shift pin 3-32 and the limit pin 21 should be avoided. By controlling the moving path of the limit pin 21, when the limit pin 21 returns, there is a second shift pin gap 3-3 with the second shift pin 3-32 to avoid each other, thereby ensuring the safety of the return rotation.

[0037] By arranging a limit pin 21 on the shift lever assembly 1, the limit pin 21 extends out of the gear toggle slider 2, and at the relative rotational position of the gear toggle slider 2 and the positioning star wheel 3, a clearance is reserved between the limit pin 21 and the close toggle pin during the gear shifting process. After the gear is shifted, the limit pin 21 abuts against the adjacent toggle pin on the moving path of the limit pin 21 to avoid continuous gear shifting of the motorcycle. The structure is simple, the space occupied is small, and the gear shifting safety is guaranteed.

[0038] In a specific embodiment of the present case, the avoidance end surface of the limit pin 21 opposite to the first deflecting pin 3-31 is an arc-surface avoidance end surface 211. The deflecting pin on the positioning star wheel 3 is a cylindrical structure. When the limit pin 21 is driven by the gear shifting slider 2 to shift the positioning star wheel 3 to rotate, the avoidance end surface of the limit pin 21 facing the first deflecting pin 3-31 is set to the arc-surface avoidance end surface 211, further reducing the space occupied by the limit pin 21 between the multiple deflecting pins of the positioning star wheel 3, avoiding interference, and achieving effective avoidance.

[0039] At the same time, the limiting abutment surface 3-2 is a plane limiting abutment surface 212, and the plane limiting abutment surface 212 and the arc surface avoiding end surface 211 are in an arc transition. After the limiting pin 21 avoids the first pin 3-31 through the first pin gap 3-1, the second pin 3-32 is required to abut and limit. In order to ensure that the second pin 3-32 of the cylindrical structure abuts stably with the limiting pin 21 and avoid slipping, the end surface of the limiting pin 21 facing the second pin 3-32 is set as a plane limiting abutment surface 212, and the limiting abutment surface 3-2 where the second pin 3-32 abuts against the limiting pin 21 transitions from the arc position to the plane limiting abutment surface 212, thereby increasing the effective abutment area and ensuring the accuracy of the abutment and limiting of the limiting pin to the second pin 3-32.

[0040] Furthermore, the stop pin 21 is a columnar stop pin extending from the end face of the gear shift slider 2. The plane stop abutment surface 212 of the stop pin 2 and the arc avoidance end face 211 are transitioned into an arc, which reduces the sharp corner structure and reduces the space occupation, so that the stop pin 21 is an arc cylindrical structure as a whole, ensures its own structural strength, and realizes stable space avoidance and abutment stability.

[0041] In a specific embodiment of the present case, the limit pins 21 are symmetrically arranged along the width direction of the gear shift slider 2. The motorcycle has two shifting directions, i.e., upshifting and downshifting, during operation. The limit pins are arranged in a symmetrical structure with respect to the gear shift slider, so that the first shift pin 3-31 can be avoided and the second shift pin 3-32 can be abutted and limited in both directions.

[0042] The above is the process of upshifting the engine. Taking the process of downshifting the engine as an example, the positional relationship between the limit pin 21 and the positioning star wheel 3 is further explained.

[0043] like Figure 6-Figure 8 As shown, Figure 6 for Figure 1 A schematic diagram of the first position of the gearshift lever mechanism of a motorcycle engine during a downshift process; Figure 7 for Figure 6 A schematic diagram of a second position of a motorcycle engine shift lever mechanism during a downshift process; Figure 8 for Figure 7 Schematic diagram of the position of the shift lever mechanism of a motorcycle engine during the return process after downshifting.

[0044] During the downshifting process, the shift lever assembly 1 and the positioning star wheel 3 move in the opposite direction to that during the upshifting process, the gear shift slider 2 moves, and the limit pin 21 and the first shift pin 6-31 have a first shift pin gap 6-1. After one downshift is completed, the positioning star wheel 3 rotates a shift pin angle. To avoid continuous rotation and shifting, the limit pin 21 is set on the moving path, and abuts against the second shift pin 6-32 on the positioning star wheel 3 close to the first shift pin 6-31, and the continuous rotation of the positioning star wheel 3 is limited by the limit abutment surface 6-2.

[0045] After the downshift is completed, the shift lever assembly 1 returns to the initial shift position, and the limit pin 21 and the second shift pin 6-32 have a second shift pin gap 6-3 to ensure the return safety.

[0046] It should be noted that the markings of the first detent pin and the second detent pin are used to illustrate the positional relationship of the limit pin 21 moving between two adjacent detent pins when the engine shifts gears once, rather than referring to specific shift detent pins.

[0047] In a specific embodiment of the present case, the shift finger 22 is a shift finger of powder metallurgy structure. The shift finger 22 is matched with the pin on the positioning star wheel 3. The powder metallurgy structure makes it easy to manufacture parts and easy to control the size, thus ensuring the stability of its working structure.

[0048] Based on the motorcycle engine shift lever mechanism provided in the above embodiment, the present invention further provides a motorcycle, on which an engine shift lever mechanism is arranged. The engine shift lever mechanism provided on the motorcycle is the motorcycle engine shift lever mechanism provided in the above embodiment.

[0049] Since the motorcycle adopts the motorcycle engine shift lever mechanism of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the motorcycle engine shift lever mechanism of the motorcycle.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motorcycle engine shift lever mechanism, characterized in that: It includes a shift lever assembly and a positioning star wheel toggled by the shift lever assembly, wherein the shift lever assembly is equipped with a gear shifting slider; A limit pin extends out from one end of the gear shift slider away from the gear shift claw, and there is one limit pin; The limit pin has a first deflecting pin gap for avoiding the first deflecting pin of the positioning star wheel when the positioning star wheel changes gears; and a limiting contact surface abutting against a second deflecting pin close to the first deflecting pin along the rotation direction of the positioning star wheel after the positioning star wheel has completed a gear shift; During the shifting process of the motorcycle engine shift lever mechanism, after the positioning star wheel rotates a detent angle, when the shift lever assembly rotates to the maximum rotation angle, the limit pin moves from the middle of the positioning star wheel to the edge, and is located between a second detent pin (3-32) adjacent to the first detent pin (3-31) and the first detent pin (3-31), and the limit pin is arranged to abut against the second detent pin (3-32) in the moving direction through a limit abutment surface; During the downshifting process, the shift lever assembly and the positioning star wheel move in the opposite direction to the upshifting process. After a downshift is completed, the positioning star wheel rotates by a detent angle. To avoid continuous rotation and shifting, the limit pin is arranged on the moving path to abut against a second detent pin (6-32) on the positioning star wheel close to the first detent pin (6-31), thereby limiting the continuous rotation of the positioning star wheel through the limit abutment surface.

2. The motorcycle engine shift lever mechanism according to claim 1, characterized in that: The limiting pin also has a second deflecting pin gap for avoiding the second deflecting pin during the returning process of the positioning star wheel.

3. The motorcycle engine shift lever mechanism according to claim 2, characterized in that: The avoidance end surface of the limit pin and the first deflecting pin is a curved avoidance end surface.

4. The motorcycle engine shift lever mechanism according to claim 3, characterized in that: The limit abutment surface is a plane limit abutment surface, and the plane limit abutment surface and the arc surface avoid the end face arc transition.

5. The motorcycle engine shift lever mechanism according to claim 4, characterized in that: The limit pin is a columnar limit pin extending from the end surface of the gear shifting slider.

6. The motorcycle engine shift lever mechanism according to claim 5, characterized in that: The limit pins are symmetrically arranged along the width direction of the gear shifting sliding block.

7. The motorcycle engine shift lever mechanism according to claim 1, characterized in that: The shift finger is a powder metallurgy structure shift finger.

8. A motorcycle having an engine shift lever mechanism, characterized in that: The engine shift lever mechanism is a motorcycle engine shift lever mechanism as claimed in any one of claims 1 to 7.

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