JP2548154Y2 - Portable work machine - Google Patents

Portable work machine

Info

Publication number
JP2548154Y2
JP2548154Y2 JP1991017885U JP1788591U JP2548154Y2 JP 2548154 Y2 JP2548154 Y2 JP 2548154Y2 JP 1991017885 U JP1991017885 U JP 1991017885U JP 1788591 U JP1788591 U JP 1788591U JP 2548154 Y2 JP2548154 Y2 JP 2548154Y2
Authority
JP
Japan
Prior art keywords
switch
conductive
work machine
mount base
switch bracket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1991017885U
Other languages
Japanese (ja)
Other versions
JPH04115723U (en
Inventor
隆信 田崎
博路 川崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyoritsu Co Ltd
Original Assignee
Kyoritsu Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyoritsu Co Ltd filed Critical Kyoritsu Co Ltd
Priority to JP1991017885U priority Critical patent/JP2548154Y2/en
Publication of JPH04115723U publication Critical patent/JPH04115723U/en
Application granted granted Critical
Publication of JP2548154Y2 publication Critical patent/JP2548154Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Switch Cases, Indication, And Locking (AREA)

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】本考案はチェーンソー等の携帯式
作業機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable working machine such as a chainsaw.

【0002】[0002]

【従来の技術】チェーンソー等の携帯式作業機では、軽
量化及びコスト低減等のために機体ハウジング等に合成
樹脂材料が多用されており、例えばエンジンの電気系統
のような電気回路を開閉するためのスイッチを取付ける
ための機体ハウジングの一部を構成するスイッチブラケ
ットも合成樹脂で作られ、エンジンのクランクケース等
に導通するスイッチのアース経路は、それに連結された
アース線又はアース板を通して形成されている。このた
め、その組立作業が煩雑で手間を要し、またアース線や
アース板は使用中に破損し易く、機械の故障の原因にも
なる等の不都合があった。
2. Description of the Related Art In a portable working machine such as a chain saw, a synthetic resin material is frequently used for an airframe housing or the like in order to reduce the weight and cost, for example, for opening and closing an electric circuit such as an electric system of an engine. The switch bracket which constitutes a part of the body housing for mounting the switch is also made of synthetic resin, and the earth path of the switch conducting to the engine crankcase or the like is formed through an earth wire or an earth plate connected to the switch. I have. For this reason, the assembling work is complicated and time-consuming, and the ground wire and the ground plate are easily damaged during use, which causes inconvenience of the machine.

【0003】[0003]

【考案が解決しようとする課題】そこで、本考案は上記
した従来の技術の不都合を取除くと共に簡単で便利な形
の携帯式作業機を提供することを目的とする。
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to eliminate the disadvantages of the prior art and to provide a simple and convenient portable working machine.

【0004】[0004]

【考案が解決しようとする課題】即ち、本考案に係る携
帯式作業機は、機体の一部を構成すると共にスイッチの
導電性ケース部分を取付けるスイッチブラケットを導電
性合成樹脂材料で形成して導電性金属材料で成形された
エンジンマウントベースに圧入状に嵌着せしめた構成を
特徴とする。
The present invention is to provide a namely, mobile according to the present invention
The band type work machine constitutes a part of the fuselage and
Connect the switch bracket to the conductive case
Formed of conductive synthetic resin material and conductive metal material
It is characterized by being fitted into the engine mount base in a press-fit manner .

【0005】[0005]

【実施例】次に、本考案に係る携帯式作業機について図
面を参照して説明する。図1は本考案実施例による携帯
式作業機の一例としてのチェーンソーの部分の分解斜視
図である。該チェーンソーはその動力源として設けられ
るエンジンブロック(図示せず)を搭載する機体ハウジ
ングの部分を構成するエンジンマウントベース1を有
し、該エンジンマウントベース1はアルミニウム等の比
較的軽量な金属材料で成形されている。該エンジンマウ
ントベース1はその後端2に上方へ開いた凹部3を形成
しており、更に、該凹部3の両側を画成する側壁4及び
5の上端に一対の孔6及び7をそれぞれ形成している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A portable working machine according to the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a part of a chain saw as an example of a portable work machine according to an embodiment of the present invention. The chainsaw has an engine mount base 1 constituting a part of an airframe housing on which an engine block (not shown) provided as a power source thereof is mounted. The engine mount base 1 is made of a relatively lightweight metal material such as aluminum. Is molded. The engine mount base 1 has a concave portion 3 opened upward at a rear end 2, and a pair of holes 6 and 7 formed at upper ends of side walls 4 and 5 defining both sides of the concave portion 3, respectively. ing.

【0006】エンジンの電気点火系統等の電気回路のス
イッチ8は、その外側周囲がアース端を形成する金属等
の導電性筒状ケース部分9を有し、この導電性筒状ケー
ス部分9が前記機体ハウジングの後端の一部を構成する
スイッチブラケット10の穴11へ嵌合されて図示しな
い通常の座金、ナットで固定される。該スイッチブラケ
ット10は、炭素繊維のような導電性添加物を含有して
導電性を示すナイロン等の強化合成樹脂材料から成形さ
れる。このため、前記スイッチ8の導電性筒状ケース部
分9は、前記スイッチブラケット10と電気的に連結さ
れた状態で固定されることになる。該スイッチブラケッ
ト10は、その両側部分11及び12において前記エン
ジンマウントベース1の凹部3の側壁4及び5に接触し
て前記凹部3中へ上方より差し込まれる。更に、前記ス
イッチブラケット10はその両側部分11及び12の上
方端に横方向外側へ突出する肩部13及び14を一体に
形成しており、該肩部13、14はそれから下方へそれ
ぞれ突出する突起15を一体に形成している。図1には
左側の肩部13に形成された突起15だけが図示されて
おり、右側の肩部14の突起15は図1に見られない。
これ等の肩部13及び14の突起15はスイッチブラケ
ット10がその両側部分11及び12においてエンジン
マウントベース1の凹部3中へ嵌合された時にエンジン
マウントベース1の側壁4及び5の孔6及び7へそれぞ
れ圧入状に嵌着される。このようにして、スイッチブラ
ケット10はエンジンマウントベース1へ電気的に連結
された状態でしっかり保持される。したがって、スイッ
チ8の導電性筒状ケース部分9からスイッチブラケット
10を通ってエンジンマウントベース1へのアース経路
がアース線やアース板を必要とせずに、簡単に形成され
る。
A switch 8 of an electric circuit such as an electric ignition system of an engine has a conductive tubular case portion 9 made of metal or the like whose outer periphery forms a ground end. It is fitted into the hole 11 of the switch bracket 10 forming a part of the rear end of the body housing, and is fixed with a normal washer and nut (not shown). The switch bracket 10 is molded from a reinforced synthetic resin material such as nylon which contains a conductive additive such as carbon fiber and exhibits conductivity. For this reason, the conductive tubular case portion 9 of the switch 8 is fixed while being electrically connected to the switch bracket 10. The switch bracket 10 is inserted into the recess 3 from above by contacting the side walls 4 and 5 of the recess 3 of the engine mount base 1 at both side portions 11 and 12 thereof. In addition, the switch bracket 10 is integrally formed with shoulders 13 and 14 projecting laterally outwardly at upper ends of both side portions 11 and 12, and the shoulders 13 and 14 respectively have projections projecting downward therefrom. 15 are integrally formed. FIG. 1 shows only the protrusion 15 formed on the left shoulder 13, and the protrusion 15 on the right shoulder 14 is not shown in FIG. 1.
The projections 15 of these shoulders 13 and 14 are provided in the holes 6 and in the side walls 4 and 5 of the engine mount base 1 when the switch bracket 10 is fitted into the recess 3 of the engine mount base 1 on both sides 11 and 12 thereof. 7 are press-fitted. In this manner, the switch bracket 10 is firmly held while being electrically connected to the engine mount base 1. Therefore, a ground path from the conductive cylindrical case portion 9 of the switch 8 to the engine mount base 1 through the switch bracket 10 is easily formed without requiring a ground wire or a ground plate.

【0007】[0007]

【考案の効果】以上説明した本考案の構成により、本考
案は、スイッチのアース経路がスイッチブラケットを直
接に通して形成され、付加部品としてのアース線やアー
ス板を必要としないので、部品点数を減らして組立作業
を容易にし、耐久性を向上し、且つ保守点検が容易であ
る携帯式作業機を提供する等の効果を奏する。
According to the configuration of the present invention described above, according to the present invention, since the earth path of the switch is formed directly through the switch bracket and does not require an earth wire or an earth plate as an additional part, the number of parts is small. Thus, the present invention has an effect of providing a portable working machine which facilitates an assembling operation, improves durability, and facilitates maintenance and inspection.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本考案実施例に係る携帯式作業機の一例として
のチェーンソーの部分の分解斜視図。
FIG. 1 is an exploded perspective view of a chain saw as an example of a portable work machine according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

8 スイッチ 10 スイッチブラケット 8 Switch 10 Switch bracket

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 機体の一部を構成すると共にスイッチ
(8)の導電性ケース部分(9)を取付けるスイッチブ
ラケット(10)を導電性合成樹脂材料で形成して導電
性金属材料で成形されたエンジンマウントベース(1)
に圧入状に嵌着せしめたことを特徴とする携帯式作業
機。
1. A switch bracket (10), which constitutes a part of an airframe and mounts a conductive case portion (9) of a switch (8) , is formed of a conductive synthetic resin material.
Mount base made of conductive metal material (1)
A portable working machine characterized by being fitted into a press fit .
JP1991017885U 1991-03-25 1991-03-25 Portable work machine Expired - Lifetime JP2548154Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991017885U JP2548154Y2 (en) 1991-03-25 1991-03-25 Portable work machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991017885U JP2548154Y2 (en) 1991-03-25 1991-03-25 Portable work machine

Publications (2)

Publication Number Publication Date
JPH04115723U JPH04115723U (en) 1992-10-14
JP2548154Y2 true JP2548154Y2 (en) 1997-09-17

Family

ID=31904536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1991017885U Expired - Lifetime JP2548154Y2 (en) 1991-03-25 1991-03-25 Portable work machine

Country Status (1)

Country Link
JP (1) JP2548154Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5892359A (en) * 1981-11-27 1983-06-01 日石三菱株式会社 Wound covering material

Also Published As

Publication number Publication date
JPH04115723U (en) 1992-10-14

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