JPH059650Y2

JPH059650Y2 -

Info

Publication number: JPH059650Y2
Application number: JP4207388U
Authority: JP
Priority date: 1988-03-31
Filing date: 1988-03-31
Publication date: 1993-03-10
Anticipated expiration: 2003-03-10
Also published as: JPH01146154U

Description

【考案の詳細な説明】〔産業上の利用分野〕この考案は、ガス検知器内のガスセンサを保護
するガスセンサの保護カバー取付装置に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a protective cover mounting device for a gas sensor that protects a gas sensor in a gas detector.

[Conventional technology]

ガス検知器には、内部のガスセンサを保護する
ために保護カバーが取付けられている。 A protective cover is attached to the gas detector to protect the internal gas sensor.

[The problem that the idea attempts to solve]

ところで、従来、ガス検知器に取り付けられる
保護カバーは、ガス検知器に対して簡単に着脱で
きるものは、保護カバーを取り付けた後において
もガス検知器の運搬中における振動や、器具等の
接触により外れることがある。また、保護カバー
をガス検知器に装着した後、外れないように構成
すると、ガス検知器に対しての着脱の操作が容易
でないという問題点があつた。 By the way, conventional protective covers attached to gas detectors that can be easily attached and detached from the gas detector are susceptible to vibrations during transportation of the gas detector or contact with instruments, etc. even after the protective cover is attached. It may come off. Further, if the protective cover is configured so that it cannot be removed after being attached to the gas detector, there is a problem in that it is not easy to attach or detach the protective cover to the gas detector.

この考案は、上記の問題点を解決するためにな
されたもので、ガス検知器に対して着脱の操作が
簡単にできるとともに、装着した後は、振動や器
具等の接触により離脱したり回動したりすること
のないガスセンサの保護カバー取付装置を得るこ
とを目的とする。 This idea was made to solve the above problems, and it is easy to attach and detach from the gas detector. It is an object of the present invention to provide a protective cover mounting device for a gas sensor that does not cause any damage to the gas sensor.

[Means to solve the problem]

この考案に係るガスセンサの保護カバー取付装
着は、外周に形成した一対の係合突起と、これら
の係合突起にそれぞれ形成した係合凹部と、その
所要位置に形成した係合部とを備えた円筒状のカ
バーと；前記カバーを挿入した後、回動により前
記各係合突起をそれぞれ係合せしめる係合片と、
前記カバーの各係合凹部にそれぞれ係合する突起
部を有する２枚の板ばねと、これらの板ばねをそ
れぞれ装着する係合溝と、前記カバーの係合部と
対応する位置に形成したねじ孔とを備えた環状の
カバー取付具と；からなるものである。そして、
前記カバーの係合部に係合し、かつ前記カバー取
付具のねじ孔と螺合することにより前記カバーの
回動を阻止する回り止めねじを設けることもでき
る。 The gas sensor protective cover mounting according to this invention includes a pair of engagement protrusions formed on the outer periphery, engagement recesses formed in each of these engagement protrusions, and engagement parts formed at the required positions. a cylindrical cover; an engagement piece that engages each of the engagement protrusions by rotation after the cover is inserted;
two leaf springs each having a protrusion that engages with each engagement recess of the cover, an engagement groove into which each of these leaf springs is attached, and a screw formed at a position corresponding to the engagement part of the cover. an annular cover fitting having a hole; and; and,
It is also possible to provide a locking screw that engages with the engaging portion of the cover and screws into the threaded hole of the cover fixture to prevent rotation of the cover.

[Effect]

この考案においては、カバーをカバー取付具に
挿入してからカバーを回動すると、カバーの係合
突起をカバー取付具の係合片に係合するととも
に、板ばねに形成した突起部がカバーの係合凹部
に係合するので、カバーがカバー取付具から離脱
することがない。 In this device, when the cover is inserted into the cover fixture and then rotated, the engagement protrusion of the cover engages with the engagement piece of the cover fixture, and the protrusion formed on the leaf spring engages with the engagement piece of the cover fixture. Since the cover is engaged with the engagement recess, the cover will not come off from the cover fixture.

また、回り止めねじをカバーの係合部に係合す
るとともに、カバー取付具のねじ孔に螺合するこ
とによりカバーの回動が阻止される。 Moreover, rotation of the cover is prevented by engaging the locking screw with the engaging portion of the cover and screwing it into the screw hole of the cover mounting tool.

〔Example〕

第１図〜第３図はこの考案の一実施例を示すも
ので、第１図は側面図、第２図は、第１図の底面
図、第３図は第１図の要部を示す分解斜視図であ
る。これらの図において、１はガス検知器の全体
を示し、２はガスセンサ、３は前記ガス検知器１
の筐体、４は前記ガスセンサ２を保護する円筒状
のカバー、５は前記筐体３に取り付けられたカバ
ー４を装着する環状のカバー取付具、６は前記カ
バー４の外周に形成した一対の係合突起、７は前
記カバー取付具５の内周に形成した係合片で、各
係合突起６とそれぞれ係合する。８は２枚の板ば
ねで、それぞれその中央に突起部９が形成されて
いる。１０は前記各係合突起６にそれぞれ形成さ
れた係合凹部で、各板ばね８のそれぞれの突起部
９と係合する。１１は前記カバー取付具５に形成
された各板ばね８をそれぞれ装着する係合溝、１
２は前記各板ばね８の突起部９をそれぞれ遊嵌
し、かつ内方へ突出させるために形成した切欠
部、１３は前記カバー取付具５に形成した取付
孔、１４は前記取付孔１３に挿通してカバー取付
具５を筐体３に装着する取付ねじ、１５は前記カ
バー４の所要位置に形成した係合部で、図示のも
のはカバー４の上部を切り欠いて形成したもので
あるが、透孔であつてもよい。１６は前記カバー
４を装着したとき、カバー４の係合部１５と対応
する位置で、かつカバー取付具５に形成した切欠
部、１７は前記カバー取付具５の切欠部１６に形
成したねじ孔、１８は前記ねじ孔１７に螺合し、
かつカバー４の係合部１５と係合する回り止めね
じで、カバー４の回動を阻止するものである。 Figures 1 to 3 show one embodiment of this invention; Figure 1 is a side view, Figure 2 is a bottom view of Figure 1, and Figure 3 shows the main parts of Figure 1. It is an exploded perspective view. In these figures, 1 indicates the entire gas detector, 2 the gas sensor, and 3 the gas detector 1.
, 4 is a cylindrical cover that protects the gas sensor 2, 5 is an annular cover fixture for attaching the cover 4 attached to the casing 3, and 6 is a pair of cylindrical covers formed on the outer periphery of the cover 4. The engagement projections 7 are engagement pieces formed on the inner periphery of the cover fixture 5, and engage with the respective engagement projections 6, respectively. Reference numeral 8 denotes two leaf springs, each of which has a protrusion 9 formed at its center. Reference numeral 10 denotes an engagement recess formed in each of the engagement protrusions 6, which engages with each protrusion 9 of each leaf spring 8. Reference numeral 11 denotes an engagement groove formed in the cover fixture 5, into which each leaf spring 8 is mounted, respectively;
Reference numeral 2 denotes a notch formed to loosely fit the projection 9 of each of the leaf springs 8 and project inward, 13 a mounting hole formed in the cover fixture 5, and 14 a cutout formed in the mounting hole 13. Mounting screws 15 are inserted to attach the cover fixture 5 to the casing 3, and 15 are engagement portions formed at desired positions on the cover 4. The one shown is formed by cutting out the upper part of the cover 4. However, it may be a through hole. 16 is a notch formed in the cover fitting 5 at a position corresponding to the engaging part 15 of the cover 4 when the cover 4 is attached, and 17 is a screw hole formed in the notch 16 of the cover fitting 5. , 18 are screwed into the screw hole 17,
It is also a locking screw that engages with the engaging portion 15 of the cover 4 to prevent the cover 4 from rotating.

次に、取り付け操作について説明する。 Next, the installation operation will be explained.

まず、第４図に示すように、取付ねじ１４によ
りカバー４を筐体３に装着する。 First, as shown in FIG. 4, the cover 4 is attached to the housing 3 using the attachment screws 14.

次に、第２図に示すように、カバー４の係合突
起６をＢ−Ｂ線に対して角度θ°時計方向に回動し
た状態でカバー取付具５に挿入し、次いで、反時
計方向に回動することにより第５図に示すよう
に、カバー４の係合突起６がカバー取付具５の係
合片７に係合する。この時、係合突起６の外周面
が板ばね８の突起部９を押圧して付勢させるが、
突起部９が係合突起６の係合凹部１０のところに
くると、板ばね８の復元力により突起部９が係合
凹部１０に係合し、カバー４を固定する。次い
で、第６図に示すように、回り止めねじ１８をね
じ孔１７に螺合してカバー４の係合部１５と係合
させることにより、カバー４の回動を阻止する。 Next, as shown in FIG. 2, the engaging protrusion 6 of the cover 4 is rotated clockwise by an angle θ° with respect to the line B-B, and then inserted into the cover fixture 5, and then counterclockwise. 5, the engaging protrusion 6 of the cover 4 engages with the engaging piece 7 of the cover mounting tool 5. At this time, the outer circumferential surface of the engagement protrusion 6 presses and biases the protrusion 9 of the leaf spring 8;
When the protrusion 9 comes to the engagement recess 10 of the engagement protrusion 6, the restoring force of the leaf spring 8 causes the protrusion 9 to engage with the engagement recess 10, thereby fixing the cover 4. Next, as shown in FIG. 6, the locking screw 18 is screwed into the screw hole 17 and engaged with the engaging portion 15 of the cover 4, thereby preventing the cover 4 from rotating.

また、カバー４の取り外しは上記と逆の動作に
より行う。 Further, the cover 4 is removed by performing the operation opposite to the above.

[Effect of idea]

以上説明したようにこの考案は、外周に形成し
た一対の係合突起と、これらの係合突起にそれぞ
れ形成した係合凹部と、その所要位置に形成した
係合部とを備えた円筒状のカバーと；前記カバー
を挿入した後、回動により前記各係合突起をそれ
ぞれ係合せしめる係合片と、前記カバーの各係合
凹部にそれぞれ係合する突起部を有する２枚の板
ばねと、これらの板ばねをそれぞれ装着する係合
溝と、前記カバーの係合部と対応する位置に形成
したねじ孔とを備えた環状のカバー取付具と；か
らなるので、カバーを着脱する操作が簡単であ
り、カバーの装着後は、ガス検知器の運搬による
振動や器物の接触によるカバーの離脱がないた
め、ガス検知器やガスセンサが破損されるのを防
止することができる利点を有する。 As explained above, this invention has a cylindrical shape that includes a pair of engagement protrusions formed on the outer periphery, engagement recesses formed in each of these engagement protrusions, and engagement parts formed at predetermined positions. a cover; an engagement piece that engages each of the engagement protrusions by rotation after the cover is inserted; and two leaf springs each having a protrusion that engages each of the engagement recesses of the cover; , an annular cover fixture having engagement grooves for attaching each of these leaf springs, and a screw hole formed at a position corresponding to the engagement portion of the cover, so that the operation of attaching and detaching the cover is easy. It is simple, and since the cover does not come off due to vibrations caused by transportation of the gas detector or contact with objects after the cover is attached, it has the advantage of being able to prevent damage to the gas detector or gas sensor.

また、前記カバーの係合部に係合し、かつ前記
カバー取付具のねじ孔と螺合することにより前記
カバーの回動を阻止する回り止めねじを備えたの
で、カバーを装着した後は、カバーの回動が阻止
されるので、カバー装着に対する安全性が高いと
いう利点を有する。 Further, since a locking screw is provided which prevents rotation of the cover by engaging with the engaging portion of the cover and screwing into the screw hole of the cover mounting tool, after the cover is attached, Since the cover is prevented from rotating, it has the advantage of high safety when attaching the cover.

[Brief explanation of drawings]

第１図〜第６図はこの発明の一実施例を示すも
ので、第１図は側面図、第２図は、第１図の底面
図、第３図は、第１図の要部を示す分解斜視図、
第４図は、第２図のＡ−Ａ線による断面図、第５
図は、第２図のＢ−Ｂ線による断面図、第６図
は、第２図のＣ−Ｃ線による断面図である。図中、１はガス検知器、２はガスセンサ、３は
筐体、４はカバー、５はカバー取付具、６は係合
突起、７は係合片、８は板ばね、９は突起部、１
０は係合凹部、１１は係合溝、１４は取付ねじ、
１５は係合部、１６は切欠部、１７はねじ孔、１
８は回り止めねじである。 Figures 1 to 6 show an embodiment of the present invention. Figure 1 is a side view, Figure 2 is a bottom view of Figure 1, and Figure 3 shows the main parts of Figure 1. An exploded perspective view showing
Figure 4 is a sectional view taken along line A-A in Figure 2;
The figure is a sectional view taken along the line BB in FIG. 2, and FIG. 6 is a sectional view taken along the line CC in FIG. 2. In the figure, 1 is a gas detector, 2 is a gas sensor, 3 is a housing, 4 is a cover, 5 is a cover fixture, 6 is an engagement protrusion, 7 is an engagement piece, 8 is a leaf spring, 9 is a protrusion, 1
0 is an engagement recess, 11 is an engagement groove, 14 is a mounting screw,
15 is an engaging portion, 16 is a notch portion, 17 is a screw hole, 1
8 is a locking screw.

Claims

[Claims for Utility Model Registration] (1) A cylinder provided with a pair of engaging protrusions formed on the outer periphery, engaging recesses formed in each of these engaging protrusions, and engaging parts formed at required positions thereof. a shaped cover; two plates each having an engaging piece that engages each of the engaging protrusions by rotation after the cover is inserted, and a protrusion that engages each of the engaging recesses of the cover; A gas sensor comprising: a spring, an annular cover fitting having engagement grooves into which the leaf springs are respectively attached, and a screw hole formed at a position corresponding to the engagement portion of the cover. Protective cover mounting device. (2) A cylindrical cover comprising a pair of engagement protrusions formed on the outer periphery, engagement recesses formed in each of these engagement protrusions, and engagement parts formed at predetermined positions; two plate springs each having an engagement piece that engages each of the engagement protrusions by rotation after insertion, and a protrusion that engages each of the engagement recesses of the cover, and these plate springs; an annular cover fitting having engagement grooves to be attached thereto and a screw hole formed at a position corresponding to the engagement part of the cover; and the cover fitting engages with the engagement part of the cover; A protective cover mounting device for a gas sensor, comprising: a locking screw that prevents rotation of the cover by being screwed into a screw hole of the gas sensor.