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Plug cap attachment structure

A spark plug cap and structure technology, which is applied to spark plugs, spark plugs, spark ignition controllers, etc., can solve problems such as reduced durability, and achieve the effects of improving design freedom, stable support, and easy disassembly and assembly operations.

Active Publication Date: 2007-07-04
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for example, in the spark plug cap disclosed in Patent Document 1, when the hard polymer material as a reinforcing agent is removed to reduce the diameter of the spark plug, the durability will be reduced.

Method used

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Examples

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Embodiment Construction

[0034] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a side view of an embodiment of a motorcycle to which the present invention is applied. The two-wheeled motorcycle 1 is a small two-wheeled motorcycle including a unit swing power unit with a built-in continuously variable transmission. On the pair of left and right main frames 8 covered by the body cover 23 in front of the vehicle body, the front axle tube 4 is fixedly combined with the reinforcement plate 6 as a joint reinforcement member. The lower end portion of the front fork 5 rotatably pivotally supports the front wheel WF. The front fork 5 is steerable by a handle 3 connected to a vertical shaft 2 rotatably supported inside the cylindrical front axle tube 4 . A pair of left and right handles 3a held by the occupant are installed on the above-mentioned handlebar 3 . In addition, the above-mentioned main frame 8 is equip...

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Abstract

A plug cap attachment structure is provided. A plate-like extension (63) is provided on an outer shell of a plug cap (60) which is connected to an ignition plug (43) at a main body (64) and a ring-like engaging projection (53) for supporting the extension (63) is provided at one end of a cylinder head cover (49). In this way, since the plug cap (60) is supported at two positions to increase stability, the main body (64) can be reduced in diameter and the ignition plug (43) can be brought into a position closer to an engine. A grip is provided in the vicinity of the extension (63) to facilitate the attachment and detachment of the plug cap (60). Alternatively, the extension (63) is replaced with a plate-like member formed with a through-hole and the engaging member is replaced with one engaging projection and two engaging plates. Then, the engaging projection is engaged with the through-hole and the engaging plates are abutted against both side surfaces of the plate-like member.

Description

technical field [0001] The present invention relates to a mounting structure of a spark plug cap, and in particular, relates to a structure capable of maintaining the support stability of the spark plug cap, reducing the diameter of the plug cap locally, and arranging the spark plug closer to the engine side. Background technique [0002] Attempts have been made to increase the rigidity of the plug cap by improving the internal structure of a plug cap used to insulate and protect a high-voltage power supply part that applies high-voltage power to a spark plug of an engine. [0003] In the spark plug cap disclosed in Patent Document 1, a shell is formed of an elastic polymer material such as rubber, and a polymer material harder than the elastic polymer material is arranged inside the shell as a reinforcing agent. [0004] Patent Document 1: JP-A-2002-151231 [0005] In recent years, there has been an increasing demand for downsizing engine rooms of motorcycles in order to i...

Claims

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Application Information

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IPC IPC(8): H01T13/04H01T13/41F02P13/00
CPCH01T13/04H01T13/06H01T13/41
Inventor 中竹顺一土屋粒二
Owner HONDA MOTOR CO LTD
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