JP2007220604A - Vacuum switch - Google Patents

Vacuum switch Download PDF

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JP2007220604A
JP2007220604A JP2006042419A JP2006042419A JP2007220604A JP 2007220604 A JP2007220604 A JP 2007220604A JP 2006042419 A JP2006042419 A JP 2006042419A JP 2006042419 A JP2006042419 A JP 2006042419A JP 2007220604 A JP2007220604 A JP 2007220604A
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housing
diaphragm
housing part
welding
burr
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JP2006042419A
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JP4728138B2 (en
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Yuichi Ishikawa
裕一 石川
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Tokai Rika Co Ltd
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Tokai Rika Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To be configured not to harm a diaphragm by flashes generated from a jointing part by welding of one housing component and the other housing component of a housing. <P>SOLUTION: The housing 11 comprises the one housing component 11a and the other housing component 11b jointed to the housing component 11a through welding (welding part Y<SB>11</SB>). A contact mechanism 12, having the diaphragm 18, to respond to changes in the pressure of a liquid is housed inside the housing 11. A flash preventive part 24 which is located between the jointing part of both the housing components 11a, 11b and the diaphragm 18 and prevents the flashes generated from the jointing part of both the housing components 11a, 11b from reaching the diaphragm 18, is provide. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ハウジングを一方のハウジング部品と他方のハウジング部品との溶着による接合で構成するバキュームスイッチに関する。   The present invention relates to a vacuum switch in which a housing is configured by joining of one housing part and the other housing part by welding.

バキュームスイッチは、例えば自動車など車両に用いられており、特には車両の燃料供給路等に用いられていて、その燃料供給路に存在するフィルタが目詰まりすると、負圧が発生することにより、作動してフィルタの目詰まりを検出するようになっている。   Vacuum switches are used in vehicles such as automobiles, and are used especially in the fuel supply passages of vehicles. When a filter in the fuel supply passage is clogged, negative pressure is generated and the vacuum switch is activated. Thus, filter clogging is detected.

図３はそのものの従来構造を示しており、ハウジング１の内部に、ダイヤフラム２を有して上記車両の燃料等の流体の圧力の変化に応動する接点機構３が収納されている。ハウジング１は、接点機構３の組み込みのため、図中下方の一方のハウジング部品１ａと、上方の他方のハウジング部品１ｂとに分けて作製されており、接点機構３を組み込んだ後、一方のハウジング部品１ａに他方のハウジング部品１ｂを溶着部Ｙ１で示すように溶着、特には超音波溶着して密に接合されている（例えば特許文献１、２参照）。
特開平８−２１２８８９号公報 実開平５−６５０４２号公報 FIG. 3 shows the conventional structure itself. A contact mechanism 3 having a diaphragm 2 and responding to a change in pressure of a fluid such as fuel of the vehicle is housed in the housing 1. The housing 1 is manufactured by dividing it into one housing part 1a in the lower part and one housing part 1b in the upper part in the figure for incorporating the contact mechanism 3, and after incorporating the contact mechanism 3, one housing welded parts 1a to indicate the other housing part 1b at the welded portion Y 1, in particular is tightly bonded by ultrasonic welding (for example, see Patent documents 1 and 2).
JP-A-8-212889 Japanese Utility Model Publication No. 5-65042

上記従来のものの場合、溶着部（一方のハウジング部品１ａと他方のハウジング部品１ｂとの接合部分）Ｙ１には、図４に示すように、溶着によるバリＶ１が発生する。このバリＶ１は、溶着部Ｙ１から内外両方に延出するものであり、そのうちの内方に延出したものがダイヤフラム２に達してこれを傷付けることにより、気密性の不良、ひいては接点機構３の動作不良を惹起する可能性があった。 For those of the prior, in Y 1 (the connecting portion between the one housing part 1a and the other housing part 1b) welded portion, as shown in FIG. 4, the burr V 1 is generated by welding. The burr V 1 extends both inside and outside from the welded portion Y 1 , and the one that extends inward reaches the diaphragm 2 and damages it, thereby causing poor airtightness and eventually a contact mechanism. There was a possibility of causing 3 malfunctions.

本発明は上述の事情に鑑みてなされたものであり、従ってその目的は、ハウジングの一方のハウジング部品と他方のハウジング部品との溶着による接合部分から発生するバリでダイヤフラムを傷付けることのないバキュームスイッチを提供するにある。   SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and therefore the object thereof is a vacuum switch that does not damage the diaphragm by a burr generated from a joint portion of one housing part and the other housing part by welding. To provide.

上記目的を達成するために、本発明のバキュームスイッチは、一方のハウジング部品とこれに溶着により接合する他方のハウジング部品とから成るハウジングの内部に、ダイヤフラムを有して流体の圧力の変化に応動する接点機構を収納して構成するものにおいて、前記ハウジングの内部に、前記一方及び他方のハウジング部品の接合部分とダイヤフラムとの間に位置して前記一方及び他方のハウジング部品の接合部分から発生するバリが前記ダイヤフラムに達するのを防ぐバリ止め部を設けたことを特徴とする。   In order to achieve the above object, a vacuum switch according to the present invention has a diaphragm in a housing composed of one housing part and the other housing part joined by welding, and responds to a change in fluid pressure. In which the contact mechanism is housed, and is generated in the inside of the housing between the joint portion of the one and the other housing parts and the diaphragm and from the joint portion of the one and the other housing parts. A burr stopper is provided to prevent burr from reaching the diaphragm.

上記手段によれば、一方のハウジング部品と他方のハウジング部品との溶着による接合部分から発生するバリがダイヤフラムに達するのは、バリ止め部で防がれ、バリでダイヤフラムを傷付けることのないようにし得る。   According to the above means, the burr generated by the welded portion between one housing part and the other housing part reaches the diaphragm at the burr stop portion, so that the burr does not damage the diaphragm. obtain.

以下、本発明の第１実施例（第１の実施形態）につき、図１及び図２を参照して説明する。
まず、図１には、バキュームスイッチの全体構造を示しており、ハウジング１１の内部に接点機構１２を収納している。 Hereinafter, a first embodiment (first embodiment) of the present invention will be described with reference to FIGS.
First, FIG. 1 shows the overall structure of the vacuum switch, and a contact mechanism 12 is housed inside a housing 11.

接点機構１２は、この場合、主として、下座板１３と、この下座板１３上に配置した圧縮コイルスプリング１４と、この圧縮コイルスプリング１４上に配置した可動コンタクト１５と、この可動コンタクト１５に下方で対向した固定コンタクト１６と、可動コンタクト１５上に配置したプッシャ１７と、プッシャ１７上に配置したダイヤフラム１８と、ダイヤフラム１８上に配置した受け座１９と、受け座１９上に配置した圧縮コイルスプリング２０と、圧縮コイルスプリング２０上に配置した上座板２１から成っている。   In this case, the contact mechanism 12 mainly includes a lower seat plate 13, a compression coil spring 14 disposed on the lower seat plate 13, a movable contact 15 disposed on the compression coil spring 14, and the movable contact 15. A fixed contact 16 facing downward, a pusher 17 disposed on the movable contact 15, a diaphragm 18 disposed on the pusher 17, a receiving seat 19 disposed on the diaphragm 18, and a compression coil disposed on the receiving seat 19 It consists of a spring 20 and an upper seat plate 21 disposed on the compression coil spring 20.

その構成で、常時は、圧縮コイルスプリング１４の弾発力に勝る圧縮コイルスプリング２０の弾発力で、可動コンタクト１５が固定コンタクト１６に接してオンしている。そして、ダイヤフラム１８の上方部分が負圧になると、圧縮コイルスプリング１４の弾発力により、可動コンタクト１５から圧縮コイルスプリング２０までが押されて、可動コンタクト１５が固定コンタクト１６から離間し、オフ作動するようになっている。   With this configuration, the movable contact 15 is always in contact with the fixed contact 16 by the elastic force of the compression coil spring 20 that exceeds the elastic force of the compression coil spring 14. When the upper part of the diaphragm 18 becomes negative pressure, the elastic contact force of the compression coil spring 14 pushes the movable contact 15 to the compression coil spring 20 so that the movable contact 15 is separated from the fixed contact 16 and is turned off. It is supposed to be.

これに対して、ハウジング１１は、一方（図中下方）のハウジング部品１１ａと、他方（図中上方）のハウジング部品１１ｂから成っており、そのうちの他方のハウジング部品１１ｂの上部に連通口２２を形成し、この連通口２２からハウジング１１内に流体が流入して、その圧力を上記接点機構１２のダイヤフラム１８に及ぼすようにしている。   On the other hand, the housing 11 includes a housing part 11a on one side (lower side in the figure) and a housing part 11b on the other side (upper side in the figure), and a communication port 22 is formed above the other housing part 11b. The fluid flows into the housing 11 from the communication port 22 and exerts the pressure on the diaphragm 18 of the contact mechanism 12.

又、一方のハウジング部品１１ａと他方のハウジング部品１１ｂは、固定コンタクト１６の外周部とこれに重ねたダイヤフラム１８の外周部とを、他方のハウジング部品１１ｂ側にパッキン２３を介して挟圧しており、そして、そのうちのダイヤフラム１８の外周部に接した他方のハウジング部品１１ｂの下縁部には、バリ止め部２４を設けている。このバリ止め部２４は、この場合、他方のハウジング部品１１ｂと一体に形成したものであり、詳細には図２に示すように、他方のハウジング部品１１ｂの下縁部から外方に延出して、先端が一方のハウジング部品１１ａの内周面にほゞ達している。更に、このバリ止め部２４の外周側の下面側には、斜面２４ａを形成していて、一方のハウジング部品１１ａ内へのバリ止め部２４の挿入をしやすくしている。   Also, one housing part 11a and the other housing part 11b hold the outer peripheral part of the fixed contact 16 and the outer peripheral part of the diaphragm 18 superimposed on the other housing part 11b side through a packing 23. And the burr | flash stop part 24 is provided in the lower edge part of the other housing component 11b which contact | connected the outer peripheral part of the diaphragm 18 of them. In this case, the burr stopper 24 is formed integrally with the other housing part 11b, and in detail, as shown in FIG. 2, extends outward from the lower edge of the other housing part 11b. , The tip almost reaches the inner peripheral surface of one housing part 11a. Further, an inclined surface 24a is formed on the lower surface side of the outer peripheral side of the burr stopper 24 so that the burr stopper 24 can be easily inserted into one housing part 11a.

Ｙ１１は、上記一方のハウジング部品１１ａと他方のハウジング部品１１ｂとを溶着、特には超音波溶着したことによる溶着部を示しており、この溶着部Ｙ１１で一方のハウジング部品１１ａと他方のハウジング部品１１ｂとを接合している。しかして、その接合部分（溶着部Ｙ１１）は、上記バリ止め部２４よりも他方のハウジング部品１１ｂの奥側（図中上方）に位置しており、従って、バリ止め部２４はこの接合部分と前記ダイヤフラム１８との間に位置している。 Y 11 is welded to the housing part 11b of one of the housing parts 11a and the other above, in particular shows the welded portion due to the ultrasonic welding, one of the housing parts 11a and the other housing the welding portions Y 11 The component 11b is joined. Therefore, the joint portion (welded portion Y 11 ) is located on the back side (upper side in the drawing) of the other housing part 11 b with respect to the burr stopper portion 24, and therefore the burr stopper portion 24 is connected to the joint portion. And the diaphragm 18.

このように本構成のものでは、ハウジング１１の内部に、一方のハウジング部品１１ａと他方のハウジング部品１１ｂとの接合部分（溶着部Ｙ１１）とダイヤフラム１８との間に位置してバリ止め部２４を設けており、その結果、図２に示すように、上記両ハウジング部品１１ａ，１１ｂの接合部分からハウジング１１の内部にバリＶ１１が発生しても、それがダイヤフラム１８に達するのは、バリ止め部２４で防がれ、バリＶ１１でダイヤフラム１８を傷付けることのないようにし得る。よって、ダイヤフラム１８による気密性をバリＶ１１で損ねず、接点機構１２に動作不良を惹起することのないようにできる。 As described above, in this configuration, the burr stopper 24 is located in the housing 11 between the joint portion (welded portion Y 11 ) between the one housing component 11 a and the other housing component 11 b and the diaphragm 18. the is provided, as a result, as shown in FIG. 2, the two housings parts 11a, even if burrs V 11 is generated from the junction portion 11b inside the housing 11, it reach the diaphragm 18, Bali is prevented by the stop portion 24 may be in order not to damage the diaphragm 18 in Bali V 11. Thus, without impairing the airtightness by the diaphragm 18 in Bali V 11, it can be so as not to cause a malfunction in the contact mechanism 12.

なお、バリ止め部２４は、他方のハウジング部品１１ｂと一体に設けるものに限られず、一方のハウジング部品１１ａと一体に設けられていても良いし、あるいは、両方のハウジング部品１１ａ，１１ｂとは別体で、他の部品と一体に、もしくは単独に設けられていても良い。   The burr stopper 24 is not limited to be provided integrally with the other housing part 11b, and may be provided integrally with one housing part 11a, or may be provided separately from both housing parts 11a and 11b. The body may be provided integrally with other parts or independently.

又、一方のハウジング部品１１ａと他方のハウジング部品１１ｂとの溶着は、超音波溶着に限られず、加熱溶着や摩擦溶着など、他の溶着方法を採るようにしても良い。
更に、バキュームスイッチ自体、自動車など車両以外に適用するものであっても良いし、作動対象の流体も液体に限られず、気体であっても良い。
そのほか、本発明は上記し且つ図面に示した実施例にのみ限定されるものではなく、要旨を逸脱しない範囲内で適宜変更して実施し得る。 Further, the welding of one housing part 11a and the other housing part 11b is not limited to ultrasonic welding, and other welding methods such as heat welding and friction welding may be employed.
Further, the vacuum switch itself may be applied to a vehicle other than a vehicle such as an automobile, and the fluid to be actuated is not limited to a liquid but may be a gas.
In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications without departing from the scope of the invention.

本発明の一実施例を示す全体の縦断面図Overall longitudinal sectional view showing an embodiment of the present invention 図１のＡ部分の拡大図Enlarged view of part A in FIG. 従来例を示す図１相当図1 equivalent diagram showing a conventional example 図３のＢ部分の拡大図Enlarged view of part B in FIG.

符号の説明Explanation of symbols

図面中、１１はハウジング、１１ａは一方のハウジング部品、１１ｂは他方のハウジング部品、１２は接点機構、１８はダイヤフラム、２４はバリ止め部、Ｖ１１はバリ、Ｙ１１は溶着部を示す。 In the drawings, 11 denotes a housing, 11a is one housing part, 11b and the other housing part, 12 contact mechanism, 18 diaphragm, 24 burr retaining portion, V 11 Bali, Y 11 welded portion.

Claims (1)

一方のハウジング部品とこれに溶着により接合する他方のハウジング部品とから成るハウジングの内部に、ダイヤフラムを有して流体の圧力の変化に応動する接点機構を収納して構成するものにおいて、
前記ハウジングの内部に、前記一方及び他方のハウジング部品の接合部分とダイヤフラムとの間に位置して前記一方及び他方のハウジング部品の接合部分から発生するバリが前記ダイヤフラムに達するのを防ぐバリ止め部を設けたことを特徴とするバキュームスイッチ。 In the housing composed of one housing part and the other housing part joined by welding, a contact mechanism that has a diaphragm and responds to a change in fluid pressure is housed and configured.
A burr stopper that is located between the joint portion of the one and the other housing parts and the diaphragm and prevents a burr generated from the joint portion of the one and the other housing parts from reaching the diaphragm inside the housing. A vacuum switch characterized by providing.
JP2006042419A 2006-02-20 2006-02-20 Vacuum switch Expired - Fee Related JP4728138B2 (en)

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JP2006042419A JP4728138B2 (en) 2006-02-20 2006-02-20 Vacuum switch

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63192641A (en) * 1987-02-02 1988-08-10 Aisin Seiki Co Ltd Parking brake device
JPH03290231A (en) * 1990-03-26 1991-12-19 Nok Corp Bonding method of resin parts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63192641A (en) * 1987-02-02 1988-08-10 Aisin Seiki Co Ltd Parking brake device
JPH03290231A (en) * 1990-03-26 1991-12-19 Nok Corp Bonding method of resin parts

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