JP3596019B2

JP3596019B2 - Switch device

Info

Publication number: JP3596019B2
Application number: JP2224394A
Authority: JP
Inventors: 己菜子鈴木; 正樹小山; 博雅金子
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1994-02-21
Filing date: 1994-02-21
Publication date: 2004-12-02
Anticipated expiration: 2019-12-02
Also published as: JPH07235237A

Description

【０００１】
【産業上の利用分野】
本発明は各種電気製品のリモートコントロール装置などに用いるスイッチ装置に関する。
【０００２】
【従来の技術】
近年、リモートコントロールの普及に伴い、防塵機能を備え接触不良を防止したスイッチ装置が発明されている（特公平３−５０４０２号公報参照）。
【０００３】
以下に従来のスイッチ装置について説明する。
図４および図５に示すように、基板１と、基板１を覆うケース２と、ケース２上に配設した文字板３と、ケース２と嵌合して摺動するスライドスイッチ４で構成されている。
【０００４】
スライドスイッチ４は、スライドつまみ５の摺動操作により基板１上の線状の固定接点６と接して摺動する可動接点７を保持するホルダ８と係合されている。文字板３には、スライドつまみ５が摺動する開口スリット９が形設され、ケース２には、ホルダ８が摺動する開口溝１０と、開口溝１０と平行に形設した凸状のレール２ａおよびリブ２ｂが形設されている。レール２ａは、スライドスイッチ４の溝４ａと嵌合してスライドスイッチ４の摺動方向を規制し、スライドスイッチ４の溝４ｂと嵌合しているリブ２ｂは、開口スリット９から進入したごみが固定接点６の方に進入するのを防止している。
【０００５】
【発明が解決しようとする課題】
しかしながら上記の従来の構成では、開口スリット９からのごみの基板１内への進入を完全には防止できず、可動接点７と固定接点６との間にごみが入り込み、接触不良が生じるという問題点を有していた。
【０００６】
本発明は上記従来の問題点を解決するもので、接触不良の原因となる開口スリットからの基板へのごみの進入を確実に防止したスイッチ装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
この目的を達成するために本発明のスイッチ装置は、スライドスイッチの操作方向の前方および後方の端面間の距離をホルダの方向からスライドつまみの方向に向けて狭くなるように平面視で略台形形状の底面をもつ構成、およびまたは両方の端面の形状を前記スライドスイッチの上面から下面に向けて広くなるようなエッジ形状の断面をもつ構成としたものである。
【０００８】
【作用】
この構成において、開口スリットから侵入したごみが、断面が凸状のリブを乗り越えて、ケース上に落下しても、スライドスイッチがケース上のレール及びリブに沿って摺動するのに伴って、スライドスイッチの操作方向の前方および後方の両端面に沿ってごみが押し退けられる。更に、この両端面は、スライドスイッチの操作方向に対し所定の角度をなしているので、スライドスイッチを前後に操作する度にケース上の空間が開けている方向、即ち開口溝の位置する方向と反対のスライドつまみの方向へごみが押し退けられ、基板上へのごみの侵入を防止することとなる。
更に、前記両端面はエッジ形状の断面をもつため、ケース上に落下したごみを排除する働きが高くなり、基板上へのごみの侵入を防止する効果が大きくなることが期待できる。
【０００９】
【実施例】
（実施例１）
以下本発明の一実施例について図面を参照しながら説明する。
【００１０】
本発明の一実施例において、前述の従来例で説明した構成部分と同じ部分については同一符号を付し、その説明を省略する。
【００１１】
図１に示すように、本実施例の特徴とするところは、前述従来の構成に、スライドスイッチ４は、矢印Ａで示した操作方向の前方および後方の端面４ｃおよび４ｄ間の距離がホルダ８の位置する方向からスライドつまみ５の位置する方向に向けて狭くなるように平面視で略台形形状の底面をもつ点である。
【００１２】
この構成により、開口スリット９から侵入し、レール２ａ及びリブ２ｂを乗り越えたごみがケース２上に落下しても、スライドスイッチ４の摺動操作に伴って、両端面４ｃ、４ｄに沿って押し退けられる。更に、この両端面は操作方向に対し所定の角度をなすので、端面によって押し退けられにくい、ケース上の空間が開けている方向、即ち開口溝１０とは反対のスライドつまみの方向へ進み、基板１上へのごみの侵入をなくすることができ、ごみ入りによる接触不良を防止できる。
【００１３】
（実施例２）
以下本発明の第２の実施例について、図面を参照しながら説明する。
【００１４】
図２に示すように、本実施例の特徴とするところは、前述従来の構成にスライドスイッチ４の矢印Ａで示した操作方向の前方および後方の両端面４ｅの形状を前記スライドスイッチの上面から下面に向けて広くなるようなエッジ形状の断面をもたせた点である。
【００１５】
この構成により、開口スリット９から侵入し、レール２ａ及びリブ２ｂを乗り越えたごみが、ケース２上に落下しても、スライドスイッチ４の摺動操作に伴って両端面４ｅに沿って押し退けられる。更に、この両端面は上面から下面に向けて広くなるようなエッジ形状の断面をもつため、端面によってごみは掬い上げられるようにケース上の空間が開けている方向、即ち開口溝１０の位置する下方でなく上方に進み、基板１上へのごみの侵入をなくすることができ、ごみ入りによる接触不良を防止できる。
【００１６】
（実施例３）
以下本発明の第３の実施例について、図面を参照しながら説明する。
【００１７】
図３に示すように、本実施例の特徴とするところは、前述従来の構成にスライドスイッチ４の矢印Ａで示した操作方向の前方および後方の端面４ｆおよび４ｇ間の距離が、ホルダ８の位置する方向からスライドつまみ５の位置する方向に向けて狭くなるように平面視で略台形形状の底面をもち、かつ、その形状を前記スライドスイッチの上面から下面に向けて広くなるようなエッジ形状の断面をもたせた点である。
【００１８】
この構成により、前述実施例１および実施例２の両方の効果が得られ、基板１上へのごみ入りによる接触不良の発生をより確実に防止できる。
【００１９】
【発明の効果】
以上の説明からも明らかなように本発明は、スライドスイッチの簡単な構成により、接触不良の原因となる開口スリットからの基板へのごみの侵入を確実に防止した優れたスイッチ装置を実現できるものである。
【図面の簡単な説明】
【図１】（ａ）は本発明の実施例１のスイッチ装置の要部断面図
（ｂ）は同スイッチ装置のスライドスイッチの平面図
【図２】（ａ）は本発明の実施例２のスイッチ装置のスライドスイッチの平面図
（ｂ）は（ａ）の側面図
【図３】（ａ）は本発明の実施例３のスイッチ装置のスライドスイッチの平面図
（ｂ）は（ａ）の側面図
【図４】従来のスイッチ装置の要部の断面を一部を欠載して内部を示した斜面略図
【図５】（ａ）は同スイッチ装置の要部断面図
（ｂ）は同スイッチ装置のスライドスイッチの平面図
【符号の説明】
１基板
２ケース
２ａレール
２ｂリブ
３文字板
４スライドスイッチ
４ｃ，４ｄ，４ｅ，４ｆ，４ｇ端面
５スライドつまみ
６固定接点
７可動接点
８ホルダ
９開口スリット
１０開口溝[0001]
[Industrial applications]
The present invention relates to a switch device used for a remote control device of various electric appliances.
[0002]
[Prior art]
In recent years, with the spread of remote control, a switch device having a dustproof function and preventing a contact failure has been invented (see Japanese Patent Publication No. 3-50402).
[0003]
Hereinafter, a conventional switch device will be described.
As shown in FIG. 4 and FIG. 5, it is composed of a board 1, a case 2 covering the board 1, a dial 3 disposed on the case 2, and a slide switch 4 fitted and slid on the case 2. ing.
[0004]
The slide switch 4 is engaged with a holder 8 that holds a movable contact 7 that slides in contact with a linear fixed contact 6 on the substrate 1 by sliding operation of a slide knob 5. The dial 3 has an opening slit 9 in which the slide knob 5 slides, and the case 2 has an opening groove 10 in which the holder 8 slides and a convex rail formed in parallel with the opening groove 10. 2a and ribs 2b are formed. The rail 2a is fitted in the groove 4a of the slide switch 4 to regulate the sliding direction of the slide switch 4, and the rib 2b fitted in the groove 4b of the slide switch 4 is provided with dust entering from the opening slit 9. It is prevented from entering the fixed contact 6.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, it is not possible to completely prevent the dust from entering the substrate 1 from the opening slit 9, and dust enters between the movable contact 7 and the fixed contact 6, resulting in poor contact. Had a point.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a switch device that reliably prevents dust from entering the substrate from an opening slit that causes a contact failure.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the switch device of the present invention has a substantially trapezoidal shape in a plan view such that the distance between the front and rear end faces in the operation direction of the slide switch is reduced from the direction of the holder toward the direction of the slide knob. And / or a configuration in which both end faces have an edge-shaped cross-section that widens from the upper surface to the lower surface of the slide switch .
[0008]
[Action]
In this configuration, dust entering from the opening slits, cross-section and over the convex rib, even drop onto the case, as the sliding slide switch along the rails and ribs on the case The dust is pushed away along the front and rear end surfaces in the operation direction of the slide switch . Further, both end faces of this, since the relative operation direction of the slide switch has a predetermined angle, the direction in which the space is opened on the case whenever the operation before and after the slide switch, i.e. the direction of the position of the opening groove The dust is pushed away in the direction of the slide knob opposite to the above, thereby preventing the dust from entering the substrate.
Further, since the both end faces have an edge-shaped cross section, the function of removing dust that has fallen on the case is enhanced, and it is expected that the effect of preventing the intrusion of dust on the substrate is enhanced.
[0009]
【Example】
(Example 1)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0010]
In one embodiment of the present invention, the same components as those described in the above-described conventional example are denoted by the same reference numerals, and description thereof will be omitted.
[0011]
As shown in FIG. 1, the present embodiment is characterized in that the slide switch 4 is different from the conventional configuration in that the distance between the front and rear end surfaces 4c and 4d in the operation direction indicated by the arrow A is the holder 8 Is a point having a substantially trapezoidal bottom in plan view so as to become narrower in the direction in which the slide knob 5 is located from the direction in which the slide knob 5 is located.
[0012]
With this configuration, even if dust entering through the opening slit 9 and riding over the rails 2a and the ribs 2b falls onto the case 2, the dust is pushed and displaced along both end surfaces 4c and 4d with the sliding operation of the slide switch 4. Can be Further, since both end surfaces form a predetermined angle with respect to the operation direction, the end surfaces are hard to be pushed away by the end surface, and advance in the direction in which the space on the case is opened, that is, in the direction of the slide knob opposite to the opening groove 10. It is possible to prevent intrusion of dust into the upper part, and to prevent poor contact due to dust.
[0013]
(Example 2)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.
[0014]
As shown in FIG. 2, the present embodiment is characterized in that the shape of the front and rear end surfaces 4e in the operation direction indicated by the arrow A of the slide switch 4 is changed from the upper surface of the slide switch to the conventional configuration described above. a point which gave a section of widens like edge shape towards the underside.
[0015]
With this configuration, even if dust entering through the opening slit 9 and riding over the rails 2 a and the ribs 2 b falls on the case 2, the dust is pushed away along the both end surfaces 4 e with the sliding operation of the slide switch 4 . Furthermore, since both end surfaces have an edge-shaped cross-section that widens from the upper surface to the lower surface, the direction in which the space on the case is opened so that dust can be scooped up by the end surfaces, that is, the open groove 10 is located. proceeds upward rather than downward, it can eliminate the dust from entering the upper substrate 1, thereby preventing contact failure due to dust entering.
[0016]
(Example 3)
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.
[0017]
As shown in FIG. 3, this embodiment is characterized in that the distance between the front and rear end surfaces 4f and 4g in the operation direction indicated by the arrow A of the slide switch 4 is different from that of the conventional configuration described above. An edge shape having a substantially trapezoidal bottom surface in plan view so as to become narrower from the position in which the slide knob 5 is located, and increasing in shape from the upper surface to the lower surface of the slide switch. This is the point where the cross section is given.
[0018]
With this configuration, the effects of both the first embodiment and the second embodiment can be obtained, and the occurrence of poor contact due to dust entering the substrate 1 can be more reliably prevented.
[0019]
【The invention's effect】
As is clear from the above description, the present invention can realize an excellent switch device that can reliably prevent dust from entering the substrate from the opening slit that causes a contact failure by a simple configuration of the slide switch. It is.
[Brief description of the drawings]
FIG. 1A is a sectional view of a main part of a switch device according to a first embodiment of the present invention; FIG. 1B is a plan view of a slide switch of the switch device; FIG. FIG. 3A is a side view of the slide switch of the switch device. FIG. 3A is a plan view of the slide switch of the switch device according to the third embodiment of the present invention. FIG. FIG. 4 is a schematic perspective view showing the inside of the conventional switch device with a part of the cross section cut away, and FIG. 5 (a) is a cross sectional view of the main portion of the switch device and FIG. Plan view of slide switch of device [Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 1 Board 2 Case 2a Rail 2b Rib 3 Dial 4 Slide switch 4c, 4d, 4e, 4f, 4g End face 5 Slide knob 6 Fixed contact 7 Movable contact 8 Holder 9 Opening slit 10 Opening groove

Claims

A substrate having a linear fixed contact, a case covering the substrate, a holder holding a movable contact in contact with the fixed contact, and moving along an opening groove formed in the case; and the opening groove A cross section formed in the case in parallel with the case, a rail having a convex shape, a cross section formed in the case in parallel with the opening groove between the opening groove and the rail, a rib having a convex shape, the rail and the rail, A slide switch that slides on the rail with a concave groove having a concave cross section to be fitted into each of the ribs and has a slide knob engaged with the holder; and a slide switch that covers the open groove and has the slide knob. and Katachi設the opening slit of movable, a switching device having a dial plate, the slide switch the sliding distance between the front and rear end faces of the operation direction from the direction the position of the holder Switch device has a configuration with a bottom surface of the substantially trapezoidal shape in plan view to be narrower toward a direction in which the position of the knob.

A substrate having a linear fixed contact, a case covering the substrate, a holder holding a movable contact in contact with the fixed contact, and moving along an opening groove formed in the case; and the opening groove A cross section formed in the case in parallel with the case, a rail having a convex shape, a cross section formed in the case in parallel with the opening groove between the opening groove and the rail, a rib having a convex shape, the rail and the rail, A slide switch that slides on the rail with a concave groove having a concave cross section to be fitted into each of the ribs and has a slide knob engaged with the holder; and a slide switch that covers the open groove and has the slide knob. and Katachi設the opening slit of movable, a switching device having a dial plate, the shape of the front and rear end faces of the operation direction of the slide switch toward the bottom surface from the top surface of said slide switch Configuration with the cross-section of the edge shape as Kunar and the switching device.

2. The switch device according to claim 1 , wherein the front and rear end surfaces of the slide switch in the operation direction have an edge-shaped cross section that widens from an upper surface to a lower surface of the slide switch. .