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Power unit for small vehicles

A power unit and vehicle technology, which is applied to vehicle components, engine components, vehicle gearboxes, etc., can solve the problems of increasing the lateral width of the crankcase, reducing the rigidity of the recoil shaft support, and the amount of extension

Inactive Publication Date: 2005-01-19
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, only the outer end of the recoil arm supported on the crankcase is extended to the outside, and the recoil arm is installed thereon, thus, the recoil shaft protrudes from the outside of the crankcase in a large amount, thereby causing recoil. Lower support rigidity of the punch shaft
Moreover, if the crankcase is to be used to firmly support the recoil shaft, the lateral width of the crankcase has to be increased, resulting in an increase in the size of the crankcase.

Method used

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  • Power unit for small vehicles
  • Power unit for small vehicles
  • Power unit for small vehicles

Examples

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Embodiment Construction

[0025] Hereinafter, an embodiment of the present invention will be described based on an example of the present invention shown in the drawings.

[0026] Fig. 1 is a side view of a motorcycle having a power unit of the present invention, and Fig. 2 is an enlarged side view of main parts of Fig. 1 , image 3 It is the 3-3 direction view of Figure 2, Figure 4 It is the 4-4 sectional view of Fig. 2, Figure 5 Yes Figure 5 5-5 Sectional Drawing of, Image 6 Yes Figure 4 6-6 enlarged cross-sectional view of Figure 7 Yes Figure 4 7-7 enlarged section view.

[0027] First, in FIG. 1, a frame 1 of a motorcycle S as a small vehicle is composed of a front frame 1f and a rear frame 1r. The front frame 1f extends from a head pipe 1h that steerably supports a front fork 2 to It extends downward and supports the pedal floor 3. The rear frame 1r extends obliquely upward from the rear end of the front frame 1f to support the trunk 4, the seat 5 and the fuel tank 7. The front fork 2...

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Abstract

The invention provides a power unit for small-size vehicles which covers many parts of a change mechanism and provides increased supporting rigidity of a kick spindle. In the invention, in a power unit for a small-size vehicle in which at least a portion of a change mechanism C is disposed on one side of a crankcase 11, a side cover 20 which accommodates the portion of the change mechanism C which is exposed out of the crankcase 11 is removably joined to a side wall of the crankcase 11. A kick spindle 21 is supported by the side cover 20 and the crankcase 11. A kick arm 22 is fixed to an outer end of the kick spindle 21 which projects out of the side cover 20.

Description

technical field [0001] The present invention relates to a power unit for a small vehicle such as a two-wheeled motor vehicle, and in particular to a gear unit for accommodating and supporting a transmission input shaft connected to the crankshaft through a clutch in a crankcase for accommodating and supporting a crankshaft, and for arranging between the transmission input shaft and the transmission input shaft. Improvement of a small vehicle power unit in which a transmission output shaft of a multi-stage transmission gear train and at least a part of a transmission mechanism selectively actuating any one of the above-mentioned multi-stage transmission gear trains are arranged on one side of the crankcase. Background technique [0002] Such a power unit for a small vehicle is known, for example, as disclosed in Japanese Utility Model Laid-Open No. 60-31536. [0003] Conventionally, in such a power unit for a small vehicle, most of the speed change mechanism was arranged outs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K17/04B62K11/04B62M11/06F02B61/02F16H57/021F16H57/031
CPCB62K11/10B62M11/06B62K2202/00F02B61/02
Inventor 平山周二矢萩邦夫
Owner HONDA MOTOR CO LTD