JP2009285812A

JP2009285812A - Power tool

Info

Publication number: JP2009285812A
Application number: JP2008143423A
Authority: JP
Inventors: Shinji Kawamata; 伸治川又
Original assignee: Hitachi Koki Co Ltd
Current assignee: Koki Holdings Co Ltd
Priority date: 2008-05-30
Filing date: 2008-05-30
Publication date: 2009-12-10

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein in a conventional on-lock mechanism, the pivotal attachment of each uneven part formed on a slide knob and a housing is easily detached by the force of a coil spring which is constantly biased in the off-lock direction due to the body vibration and the shallow degree of engagement during the operation caused by an structure. <P>SOLUTION: A leaf spring is provided for reliably achieving the pivotal attachment of an uneven part of a slide knob and a housing for on-lock. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電動工具を使用する際のスライド式オンロック機構を備えたスイッチに関するものである。 The present invention relates to a switch provided with a slide-type on-lock mechanism when using an electric power tool.

ハウジング後部に装着されたカバー内部に固定されているスイッチに、該スイッチのレバー部に係合したスライドバーを介し、該スライドバー部近傍に該スイッチを常にオフさせるように付勢するコイルバネ及び、コイルバネ係止部材が配設され、前記スイッチを操作するためのスライドノブがハウジング外周に摺動可能に装着されている。スライドノブには凸部、ハウジングには凹部が各々形成され、コイルバネを圧縮方向に該スライドノブを操作することで、該スライドノブの凸部と該ハウジングの凹部が枢着し、該コイルバネが常にオフする方向に付勢する力でオンロック状態となる構造であるが、作業時の本体振動等で、前記凹凸部の枢着が外れ易い場合があった。 A coil spring that urges a switch fixed to the inside of the cover attached to the rear of the housing, via a slide bar engaged with a lever part of the switch, so that the switch is always turned off in the vicinity of the slide bar part; and A coil spring locking member is disposed, and a slide knob for operating the switch is slidably mounted on the outer periphery of the housing. A convex part is formed on the slide knob, and a concave part is formed on the housing. By operating the slide knob in the compression direction, the convex part of the slide knob and the concave part of the housing are pivotally attached. Although it is a structure which becomes an on-lock state by the force urging | biasing in the direction to turn off, the pivotal attachment of the said uneven | corrugated | grooved part may be easy to remove | deviate by the main body vibration etc. at the time of work.

従来のオンロック機構は、前記構造により作業時の本体振動や係合具合が浅いことで、常にオフする方向に付勢しているコイルバネの力により、スライドノブとハウジングに各々形成された凹凸部の枢着が外れ易い場合がある。本発明は、従来のオンロック機構のスライドノブに板バネを装着することにより、前記スライドノブとハウジングの凹凸部の枢着をより確実にすることが可能となり、連続運転時に不意にスイッチがオフすることを無くすことを目的としている。 The conventional on-lock mechanism has a concave and convex portion formed on the slide knob and the housing, respectively, by the force of the coil spring that is always biased in the direction of turning off because the main body vibration and engagement is shallow due to the above structure. There is a case where it is easy to come off. According to the present invention, by attaching a leaf spring to a slide knob of a conventional on-lock mechanism, it becomes possible to more reliably pivot the slide knob and the uneven portion of the housing, and the switch is unexpectedly turned off during continuous operation. The purpose is to eliminate things.

上記目的を達成するためには、オンロックするためのスライドノブとハウジングの凹凸部の枢着を、より確実にするための板バネを設けることで可能となる。 In order to achieve the above object, it is possible to provide a leaf spring for ensuring the pivotal attachment of the slide knob for on-locking and the uneven portion of the housing.

本発明によれば、板バネを設けることでスライドノブとハウジングの凹凸部の枢着が外れ難い方向へ付勢する力が働くことで、オンロック状態をより確実にすることが可能となるため、不意にスイッチがオフすることなく連続運転時の作業中断が無くなることで、作業効率の向上が図れる。 According to the present invention, by providing a leaf spring, a force that urges the slide knob and the concave and convex portions of the housing in a direction in which it is difficult to come off acts, so that the on-lock state can be made more reliable. The work efficiency can be improved by eliminating the interruption of the operation during the continuous operation without unexpectedly turning off the switch.

本発明の実施形態を、電動工具の実施例図面を参照しながら説明する。図１においてスイッチ３がオフ状態を示しており、ハウジング１後部に装着されたカバー２内部に固定されているスイッチ３に、該スイッチ３のレバー３ａに係合されたスライドバー４を介し、スライドノブ５を操作することで、該スイッチ３のオン−オフを行うものである。
図２においてスイッチ３がオン状態を示しており、スライドノブ５をＡ方向に引き、該スライドノブ５に設けられた凸部５ａと該ハウジング１に設けられた凹部１ａによって、常に該スイッチ３をオフするＢ方向に働くコイルバネ６の付勢力により、係合し続けオンロックの状態となる。スイッチ３をオフする際にはスライドノブ５をＣ方向に押すことで、前記スライドノブ５とハウジング１に設けられている凹凸部の枢着が外れ、前記コイルバネ６のＢ方向に働く付勢力によりスイッチ３がオフ（図１の状態）となる。図３において本発明のオンロックスイッチ構造とするため、前記スライドノブ５に板バネ７を装着可能とする凹部５ｂを設け、該スライドノブ５に装着しハウジング１外周と挟持され、該ハウジング１の外周を摺動可能としている。
上記形態のオンロック構造より、スイッチ３をオンさせた際には、コイルバネ６のＢ方向に付勢された力によりスライドノブ５に設けられた凸部５ａと、該ハウジング１に設けられた凹部１ａが枢着し続けると同時に、板バネ７の付勢力により該スライドノブ５の凸部５ａがＤ方向へ付勢され続け、該スライドノブ５とハウジング１に設けられている凹凸部の枢着がより確実となり、不意にスイッチ３がオフすることが無くなり、連続運転等が可能となる。 An embodiment of the present invention will be described with reference to an example drawing of a power tool. In FIG. 1, the switch 3 is in an off state, and the switch 3 fixed to the inside of the cover 2 mounted on the rear portion of the housing 1 is slid through the slide bar 4 engaged with the lever 3 a of the switch 3. By operating the knob 5, the switch 3 is turned on and off.
In FIG. 2, the switch 3 is shown in an ON state. The slide knob 5 is pulled in the A direction, and the switch 3 is always turned on by the convex portion 5 a provided on the slide knob 5 and the concave portion 1 a provided on the housing 1. Due to the biasing force of the coil spring 6 acting in the B direction to be turned off, the coil spring continues to be engaged and becomes an on-lock state. When the switch 3 is turned off, by pushing the slide knob 5 in the C direction, the projections and depressions provided on the slide knob 5 and the housing 1 are pivoted, and the biasing force acting in the B direction of the coil spring 6 is removed. The switch 3 is turned off (state shown in FIG. 1). In FIG. 3, the slide knob 5 is provided with a recess 5b in which a leaf spring 7 can be mounted so that the slide knob 5 can be mounted. The outer periphery is slidable.
Due to the on-lock structure of the above embodiment, when the switch 3 is turned on, the convex portion 5a provided on the slide knob 5 by the force biased in the B direction of the coil spring 6 and the concave portion provided on the housing 1 At the same time as 1a continues to pivot, the convex portion 5a of the slide knob 5 continues to be urged in the direction D by the urging force of the leaf spring 7, so that the concave and convex portions provided on the slide knob 5 and the housing 1 are pivoted. Thus, the switch 3 is not unexpectedly turned off, and continuous operation or the like is possible.

従来スイッチ機構のオフ状態を示す構造図。FIG. 6 is a structural diagram showing an off state of a conventional switch mechanism. 従来スイッチ機構のオン状態を示す構造図。FIG. 6 is a structural diagram showing an on state of a conventional switch mechanism. 本発明のスイッチ機構のオンロック状態を示す構造図。FIG. 3 is a structural diagram showing an on-lock state of the switch mechanism of the present invention.

Explanation of symbols

１はハウジング、１ａはハウジングの凹部、２はカバー、３はスイッチ、３ａはスイッチのレバー、４はスライドバー、５はスライドノブ、５ａはスライドノブの凸部、５ｂはいたバネ装着用凹部、６はコイルバネ、７は板バネ 1 is a housing, 1a is a recess in the housing, 2 is a cover, 3 is a switch, 3a is a switch lever, 4 is a slide bar, 5 is a slide knob, 5a is a protrusion of the slide knob, and 5b is a recess for mounting a spring. 6 is a coil spring, 7 is a leaf spring

Claims

A switch fixed inside the cover attached to the rear of the housing;
A slide bar that engages the lever portion of the switch and slides inside the housing;
A coil spring that engages with the slide bar and urges the switch to be always turned off and a coil spring locking member are provided, and the outer periphery of the housing is arranged so that a slide knob for operating the switch is interlocked with the slide bar. In an electric tool equipped with a mechanism that is slidably mounted, and a convex part formed on the slide knob and a concave part formed on the housing are pivotally attached and on-locked,
An electric tool having an on-lock mechanism for a switch, characterized in that a leaf spring that can be attached to the slide knob and is slidable on the outer periphery of the housing is provided integrally with the slide knob.