CN214888793U

CN214888793U - Speed-reducing reverse gear structure of motorcycle

Info

Publication number: CN214888793U
Application number: CN202120961670.5U
Authority: CN
Inventors: 陆詹平
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-11-26
Anticipated expiration: 2031-05-07

Abstract

The utility model discloses a motorcycle speed reduction structure of reversing gear, which comprises an outer shell, the cooperation is installed with sun gear on the horizontal axis of shell, planetary gear cooperation install in sun gear's outer wall, outer ring gear cooperation install in planetary gear's outer wall, be equipped with outer ring gear combination tooth on the outer ring gear, one side of sun gear is equipped with planet gear combination tooth and sun tooth combination tooth in proper order, combination cover cooperation install in planet gear combination tooth and sun tooth combination tooth's outer wall, dial the shelves pole joint in the combination cover, one side of shell is equipped with the sprocket, the opposite side is equipped with the bottom, be equipped with bottom combination tooth on the bottom; the structure utilizes the mode of combining the gear ratio with the locking planetary gear to reduce the reverse gear speed to a safer slow speed for reversing, and adopts the mode of adding the gear shifting rod to the combination sleeve to realize the coplanar design of the edge of the sun gear and the edge of the outer gear ring, so that the combination sleeve is locked at the same time, and the abrasion of internal parts of the structure is avoided.

Description

Speed-reducing reverse gear structure of motorcycle

Technical Field

The utility model relates to a motorcycle reverse gear module, in particular to motorcycle deceleration reverse gear structure.

Background

The reverse gear module of the general civil two-wheeled motorcycle is a straight-tooth structure, three shafts are needed for reverse gear of the straight-tooth structure combination, the size is increased, the installation position of a plurality of front small chain wheels of the motorcycle is small, the motorcycle cannot be installed, or the reverse gear is abrupt after installation, the structure is that the driving teeth, the driven teeth and the output teeth are combined to rotate to conduct power in normal riding, the service life of parts in the structure is influenced in the process of mutual relative force rotation friction, heat generated by mutual friction among the gears in the operation process aggravates the loss of the gears and liquid lubricating oil is needed, so that an oil cylinder form is needed to prevent excessive abrasion, the maintenance cost and time are increased, and a large internal space is increased, therefore, large speed reduction reverse gear cannot be achieved in a limited structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a motorcycle deceleration reverse gear structure is used for overcoming the defect that the reverse gear module of civilian two-wheeled motorcycle can not accomplish great deceleration reverse gear in limited structure among the prior art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model discloses a motorcycle deceleration structure of reversing gear, which comprises an outer shell, the cooperation is installed there is sun gear on the horizontal axis of shell, the planet gear cooperation install in sun gear's outer wall, outer ring gear cooperation install in planet gear's outer wall, be equipped with outer ring gear on the outer ring gear and combine the tooth, one side of sun gear is equipped with planet gear in proper order and combines tooth and sun gear to combine the cover cooperation install in planet gear combines the outer wall of tooth and sun gear to combine the tooth, dials the shelves pole joint in combining the cover, one side of shell is equipped with the sprocket, and the opposite side is equipped with the bottom, be equipped with bottom combination tooth on the bottom.

Furthermore, a first bearing is arranged between the shell and the outer gear ring, and a second bearing is arranged between the bottom cover combining teeth and the sun gear.

Furthermore, the sun gear serves as a driving tooth, the planet gear serves as a follow-up tooth, the outer gear ring serves as an output tooth, and the sun gear, the planet gear and the outer gear ring are all designed in a single shaft mode.

Furthermore, the shifting rod controls the left and right sliding of the combination sleeve, so that the rotation friction of the gear is avoided, and the service life of the structural internal gear is prolonged.

Furthermore, the number of teeth of the sun gear is 16, the number of teeth of the planet gear is 8, and the number of teeth of the outer gear ring is 32.

The utility model discloses the beneficial effect who reaches is: the reverse gear speed is reduced to a safer slow speed for backing by combining the gear ratio with the mode of locking the planetary gear, so that the motorcycle with a larger and heavier gear can be backed slowly under the condition that the motorcycle needs to be backed on uneven road surfaces or sand and the like; the edge of the sun gear and the edge of the outer gear ring are designed to be coplanar by adopting a mode of a gear shifting rod and a combination sleeve, so that the combination sleeve is locked simultaneously. Thus, the abrasion of parts in the structure is avoided; the whole structure uses the common axis, the volume is small, the structure can be mounted on most motorcycles by using the switching structure, the structure rotates in the synchronous direction when running normally, and the stress on the switching structure is smaller than that of a straight gear and bevel gear structure; the structural parts only need to be properly added with the solid lubricating grease, and complicated maintenance is not needed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention.

In the figure: 1. a housing; 2. a sun gear; 3. a planetary gear; 4. an outer ring gear; 5. the outer gear ring is combined with teeth; 6. a planetary gear engaging tooth; 7. a sun tooth engaging tooth; 8. a coupling sleeve; 9. a gear shifting lever; 10. bottom cover combining teeth; 11. a bottom cover; 12. a sprocket; 13. a first bearing; 14. a second bearing.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1-2, a motorcycle speed reduction and reverse gear structure comprises a housing 1, a sun gear 2 is fitted on a horizontal axis of the housing 1, a planetary gear 3 is fitted on an outer wall of the sun gear 2, an outer gear ring 4 is fitted on an outer wall of the planetary gear 3, an outer gear ring engaging tooth 5 is arranged on the outer gear ring 4, a planetary gear engaging tooth 6 and a sun gear engaging tooth 7 are sequentially arranged on one side of the sun gear 2, an engaging sleeve 8 is fitted on outer walls of the planetary gear engaging tooth 6 and the sun gear engaging tooth 7, a shift lever 9 is clamped in the engaging sleeve 8, a sprocket 12 is arranged on one side of the housing 1, a bottom cover 11 is arranged on the other side of the housing, and a bottom cover engaging tooth 10 is arranged on the bottom cover 11.

A second bearing 14 is arranged between the bottom cover combining teeth 10 and the sun gear 2, and a first bearing 13 is arranged between the shell 1 and the outer gear ring 4.

The working principle is as follows: the sun gear 2 is used as a driving tooth, the planet gear 3 is used as a following tooth, and the outer gear ring 4 is used as an output tooth by adopting the structural principle of the planet gear, and the sun gear, the planet gear and the outer gear ring are all designed in a single shaft mode. On the premise of reducing the overall diameter, under the same umbrella tooth structure volume, the tooth meshing area is larger, and the volume is compact and smaller. The thickness of the parts is thinner than the combination of the bevel gear and the straight gear under the condition that the driving gear, the follow-up gear and the output gear are all single shafts. This is advantageous for the rider of the two-wheeled straddle motorcycle to be safe in riding. The gear shifting rod 9 is adopted to control the combination sleeve 8 to slide left and right, so that the driving teeth and the output teeth are directly combined to conduct power, the rotation friction of the gear can be avoided, the service life of the gear in the structure is prolonged, and the gear tooth loss is extremely limited compared with the reverse gear with lower utilization rate. In normal riding, the driving gear, the driven gear and the output gear need a relatively good sealed environment to be lubricated by liquid lubricating oil, however, the design does not generate mutual friction of gears in normal riding, so that the working environment of the driving gear, the driven gear and the output gear does not need a too sealed environment and even can only use solid lubricating grease. In the reverse gear condition, the output gear adopts a gear shifting rod 9 to control a combination sleeve 8 to enable the follower gear to be in power transmission output (the number of teeth of the sun gear 2 is 16, the number of teeth of the planet gear 3 is 8, and the number of teeth of the outer gear ring 4 is 32). The rotational speed transmitted to the output gear is such that the reverse gear is only one-half the speed of the forward gear. The effect of speed change reverse gear (multiple reverse gear speeds can be realized according to the gear ratio) can be achieved.

Firstly, determining the type of the vehicle to be installed, selecting the corresponding bottom cover 11, forming a whole with other parts, and matching the bottom cover installation hole on the bottom cover 11 with the installation position of the selected vehicle type.

Next, the sprocket 12 of the original vehicle is removed from the vehicle, the spline shaft is exposed, and the spline port of the component is inserted into the spline on the vehicle body.

And finally, the gear shifting device is locked with a vehicle body through a bottom cover mounting hole, the chain wheel 12 is arranged on the same plane of the original vehicle chain wheel, a pull wire is arranged outside the gear shifting rod 9, the gear shifting rod 9 can be controlled to move, and the gear shifting effect is achieved.

In normal forward use, the gearshift lever 9 is kept in forward gear. Only when the reverse gear is needed, the shift lever 9 is pulled to pass through the neutral gear and then enters the reverse gear. The combination sleeve 8 provides forward power by biting the sun gear combination teeth 7 and the outer gear ring combination teeth 5 when in forward gear, the sun gear 2, the outer gear ring 4 and a chain wheel 12 connected with the outer gear ring 4 rotate clockwise to provide forward power, the combination sleeve 8 fixes the planet gear combination teeth 6 to be combined with the bottom cover combination teeth 10 when in reverse gear, and the chain wheel 12 and the outer gear ring 4 rotate anticlockwise to provide reverse power.

Because the power shaft output by the engine rotates in the positive direction, the sun gear 2 and the planetary gear 3 are fixed with each other, so that the gear set can be locked and the power is transmitted to the chain wheel 12 along with the engine in the same direction, wherein the stress borne by the planetary gear 3 is small, in order to avoid the abrasion of the planetary gear 3 under the action, the sun gear 2 is connected with the outer gear ring 4 in a mode of a combining sleeve 8, and the transmission of the power does not pass through the planetary gear 3.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A motorcycle speed reduction reverse gear structure is characterized by comprising a shell, a sun gear is installed on a horizontal axis of the shell in a matched mode, a planetary gear is installed on the outer wall of the sun gear in a matched mode, an outer gear ring is installed on the outer wall of the planetary gear in a matched mode, outer gear ring combining teeth are arranged on the outer gear ring, planetary gear combining teeth and sun gear combining teeth are sequentially arranged on one side of the sun gear, a combining sleeve is installed on the outer wall of the planetary gear combining teeth and the outer wall of the sun gear combining teeth in a matched mode, a gear shifting rod is clamped in the combining sleeve, a chain wheel is arranged on one side of the shell, a bottom cover is arranged on the other side of the shell, and bottom cover combining teeth are arranged on the bottom cover.

2. A motorcycle speed-reducing reverse gear structure according to claim 1, wherein a first bearing is provided between the outer case and the outer ring gear, and a second bearing is provided between the bottom cover engaging teeth and the sun gear.

3. A motorcycle speed reduction reverse gear structure according to claim 1, wherein the sun gear serves as a driving tooth, the planetary gear serves as a driven tooth, the outer ring gear serves as an output tooth, and the three are of a single-shaft design.

4. A motorcycle speed-reducing reverse gear structure according to claim 1, wherein the shift lever controls the left and right sliding of the coupling sleeve, so as to avoid the rotation friction of the gear and prolong the service life of the gear inside the structure.

5. A motorcycle speed reduction reverse gear structure according to claim 1, wherein the number of teeth of the sun gear is 16, the number of teeth of the planet gear is 8, and the number of teeth of the outer ring gear is 32.