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Assembling structure for sleeve part

A technology for assembling structures and components, applied to engine components, bearings, machines/engines, etc., can solve problems such as wrong assembly and achieve the effect of preventing wrong assembly

Active Publication Date: 2013-11-13
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In the case of the above-mentioned Patent Document 1, when the drive sprocket is inserted into the predetermined position of the crankshaft, since there is no mark for easily confirming the axial position of the sprocket teeth, there is a high possibility of erroneous assembly.

Method used

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  • Assembling structure for sleeve part
  • Assembling structure for sleeve part
  • Assembling structure for sleeve part

Examples

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Embodiment Construction

[0093] The following is based on Figure 1 to Figure 15 An embodiment of the present invention will be described.

[0094] In the internal combustion engine 10 of this embodiment, the transmission 40 is integrally provided behind the internal combustion engine 10, and the crankshaft 20 is oriented in the vehicle width direction, that is, laterally mounted in the left-right direction on a two-wheeled vehicle.

[0095] In addition, in the present embodiment, the front, rear, left, and right coincide with the front, rear, left, and right when the vehicle is used as a reference.

[0096] The internal combustion engine E is a single-cylinder four-stroke internal combustion engine, and the crankcase 11 that pivotally supports the crankshaft 20 has a structure in which a transmission chamber 11M for accommodating a transmission 40 is formed behind a crank chamber 11C in which the crankshaft 20 is disposed (refer to Figure 4 ), below the crank chamber 11C, an oil storage portion 11P...

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PUM

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Abstract

The invention discloses an assembling structure for a sleeve part, wherein an assembling error can be easily confirmed while embedding the sleeve part in the set position of a rotating shaft. In the assembling structure of the sleeve part, the rotating shaft (20) is supported in a bearing hole of the bearing wall of the structure body by a shaft neck part (a1); and the sleeve part (25), forming a diameter enlarging part (25t) by partially protruding towards a side of central axis direction on the outer circumference of a cylinder part (25c) is embedded with the rotating shaft (20), wherein the sleeve part (25) is embedded in the rotating shaft (20) in the case that the reverse expanding part side end surface (25i) at the offset side of an expanding part (25t) of the cylinder part (25c) is towards the bearing wall, and fixed by propping against a step (a2) of the rotating shaft (20); and provided with a bump (100) by protruding on a bearing hole end surface (11s) in a set gap width (C) with the expanding part (25t).

Description

technical field [0001] The invention relates to an assembly structure of sleeve parts embedded in a rotating shaft. Background technique [0002] There is an example of attaching a sleeve member to a sprocket, and the sleeve member is protrudingly formed on the outer peripheral surface of a cylindrical portion fitted with a rotating shaft and has an enlarged diameter portion offset to one side in the direction of the central axis (for example, refer to Patent Document 1 ). [0003] [Patent Document 1] (Japanese) Patent No. 4322585 (refer to figure 2 ) [0004] Patent Document 1 discloses a structure in which a drive sprocket is fitted to a crankshaft of an internal combustion engine, and a chain for transmitting power to a dynamic valve system is wound around the drive sprocket. [0005] On the drive sprocket, sprocket teeth corresponding to enlarged diameter portions are formed offset to one side in the central axis direction on the outer periphery of the cylindrical por...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F7/00F16C9/00
Inventor 高桥明金石贵志山代隼人
Owner HONDA MOTOR CO LTD