JP3812776B2

JP3812776B2 - Compressor sealing device

Info

Publication number: JP3812776B2
Application number: JP32739797A
Authority: JP
Inventors: 繁樹神崎; 隆宏星田; 実米良
Original assignee: Toyota Industries Corp
Current assignee: Toyota Industries Corp
Priority date: 1996-11-28
Filing date: 1997-11-28
Publication date: 2006-08-23
Anticipated expiration: 2017-11-28
Also published as: JPH10213071A

Description

【０００１】
【発明の属する技術分野】
本発明は、圧縮機の封栓装置に係り、詳しくは圧縮機の接続部に開口される吸入孔又は吐出孔を密閉して、搬送、格納中における圧縮機内の腐食や塵埃の侵入を予防するようにした封栓装置に関する。
【０００２】
【従来の技術】
一般に車両空調用に供される圧縮機は、単体部品として工場生産されたのち、機体内部の防錆を兼ねて予め潤滑油が封入される。そして例えば図８に示すように、圧縮機の接続部４０に形成された吸入孔４０ａにはゴム製のキャップ５０が被冠され、図示しない吐出孔にも同様のキャップが被冠されて機内は密閉される。その後、圧縮機は車両組立工場に搬送され空調装置の一部品として装着されるが、その際キャップ５０は取外されて吸入孔４０ａには接続具を介して吸入配管が取付られる。
【０００３】
図９はキャップの別の態様を例示するもので、このキャップ６０は樹脂材で形成され、キャップ本体６０ａの上部には腕部６０ｂを介して把手部６０ｃが延設され、この腕部６０ｂがボルト６１によって接続部４０上面に締着されることによりキャップ６０は固定されている。なお、ボルト６１は上述した吸入配管接続具を取付ける際のねじ孔を流用して結合されるものであり、また、キャップ本体６０ａの外周面にはゴム製のシールリング６２が装着されて吸入孔４０ａの封止が保持されている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上述した前者のキャップ５０は付与された締代相当分の弾性変形のみで吸入孔４０ａに固定されているため、搬送途中の振動、衝撃などによりともすれば吸入孔４０ａから外れる可能性がある。また、上記圧縮機は車両組立工場の事情などから格納期間が長期にわたることもあって、その多くは防塵及び防錆のためのガス封入が行われている。このガス封入は真空引きした機内に所定量のヘリウムガス又は窒素ガスを注入して、大気圧よりも高い機内圧力を保持するものであるが、このようなガス封入によって機内圧力が高まれば、キャップ５０の弛緩や脱落の懸念は一層助長される。
【０００５】
一方、後者のキャップ６０はボルト６１によってその脱落は確実に防止されているが、それ自体ある程度剛性に富んだ樹脂材で形成されているため、真空引きやガス注入のために必要な注射針の挿通が行い難い。
本発明は、吸入孔又は吐出孔の着脱が容易なほか脱落の心配がなく、しかもガス封入に簡便に対処しうる封栓装置を提供することを、解決すべき技術課題とするものである。
【０００６】
【課題を解決するための手段】
上記課題を解決する請求項１記載の圧縮機の封栓装置は、機体の接続部に吸入孔及び吐出孔が開口され、その近傍にそれぞれ配管接続具固定用のねじ孔が形成された圧縮機に用いられ、該吸入孔又は吐出孔を予防的に密閉する封栓装置であって、上記吸入孔又は吐出孔に密合される胴部及び該胴部の上面に突出した円柱頭部を有するゴム製の栓体と、該円柱頭部が嵌入される貫孔をもち、かつ上記ねじ孔を利用して該栓体を上記接続部に締着する基板とからなり、上記栓体の胴部上縁には把手部が設けられ、該把手部は上記接続部と基板との間に位置するとともに基板外方まで延在されていることを特徴としている。
【０００７】
この封栓装置では、圧縮機の接続部に開口された吸入孔又は吐出孔に、栓体の胴部を圧入することによって、該吸入孔又は吐出孔は確実に密閉されるとともに、該胴部の上方を覆蓋する基板を既存のねじ孔を利用してボルト結合することにより、該栓体は完全に接続部に締着される。この時胴部上縁から把手部が接続部と基板との間に位置して基板外方まで延在されているので、栓体の除去に際しても、該把手部を介して基板もろとも取外すことができ、栓体が吸入孔又は吐出孔内に取残されることはない。
【０００８】
また、請求項２記載の封栓装置のように、基板の位置決め手段により上記把手部を所定の位相方向に位置決めすれば、把手部を機体と全く干渉しないきわめて扱い易い位置に設定することができる。この際、請求項３記載の封栓装置のように、位置決め手段を把手部と係合する基板の凹部で構成すれば、把手部の位置決めをごく簡便に行うことができる。
【０００９】
なお、栓体はゴム質で形成されており、真空引きやガス注入のための注射針の挿通も十分可能であるが、請求項４記載の封栓装置のように、胴部上縁に把手部に連なった鍔が形成され、該鍔が基板と接続部との間で挟持されるものでは、この鍔が注射針の挿通など該栓体を孔内へ押し込もうとする力にもより確実に抵抗する。
【００１０】
加えて、請求孔５記載の封栓装置のように、鍔の所定位置に切欠き面を形成し、基板に該切欠き面と係合する係止面を形成すれば、請求項３記載の封栓装置と同様に把手部の位置決めが簡便化される。さらに、請求項６記載の封栓装置のように、鍔がねじ孔周辺にまで延在され、延在された鍔部に基板のボルト取付孔と整合する通孔を設けたものでは、栓体を孔内に押し込もうとする力に対して一層有効に抵抗する。そして、請求項７記載の封栓装置のように、基板に延在された鍔部を囲包するリブを形成して、該リブを把手部の位置決め手段とすれば、延在された鍔部とリブとの係合により把手部の位相、つまり基板と栓体との相対位相をより簡便に設定することができる。
【００１１】
また、基板に形成された貫孔と栓体に形成された円柱頭部との嵌合に締代を付与しておけば、該基板と栓体とを結合ユニットとして簡便に取扱うことができ、とくに請求項８記載の封栓装置のように、一部の締代付与部分を除く貫孔の残部を、円柱頭部の基端に向けて拡開するテーパ状に形成したものでは、両者の嵌合を至極滑らかに行うことができる。
【００１２】
【発明の実施の形態】
以下、図に基づいて本発明の第１の実施形態を具体的に説明する。
図１〜３において、圧縮機１００を構成するシリンダブロックやハウジング等の外郭部には、空調装置の配管系と接続される接続部１が設けられ、該接続部１の取付面１ａには吸入孔２及び吐出孔２’が開口され、これら両孔２、２’の近傍にはそれぞれ配管接続具固定用のねじ孔３が形成されている。なお、本発明にかかる封栓装置は、吸入孔２又は吐出孔２’を予防的に密閉するものであって、そのいずれにも同様の形態で実施しうるので、ここでは重複を避ける意味から吸入孔２を密閉する封栓装置についてのみ説明する。
【００１３】
封栓装置を構成する栓体１０はゴム質からなり、吸入孔２に密合される胴部１１と、該胴部１１の上面に突出した円柱頭部１２とを備えており、吸入孔２に対して所定の締代を付与されている胴部１１の圧入終端位置は、該胴部１１の上縁に張出した鍔（フランジ）１１ａが取付面１ａと衝接することにより規制されている。一方、栓体１０と共に封栓装置を構成する基板２０は、栓体１０の円柱頭部１２が嵌入される貫孔２１を有して胴部１１の上方を覆蓋する押付部２２と、既存のねじ孔３に螺合される締付ボルト３０の取付孔２５を囲包するボス部２３とを備えている。なお、２４はボス部２３から押付部２２の周縁に沿って延設された補強リブである。
【００１４】
栓体１０には、これを吸入孔２から抜き出す作業の利便を図るため、鍔１１ａの一部から所定の位相を指向して径方向に延出する把手部１３が設けられており、この把手部１３は機体外郭部と干渉することなく自在に把持しうる位相角θが得られるよう、鍔１１ａの切欠き面１１ｂと基板２０の係止面２０ａとの相対的な係合によって位置決めされている。
【００１５】
なお、基板２０の貫孔２１と栓体１０に形成された円柱頭部１２との嵌合は、必ずしも締代の付与を要件とするものではないが、この嵌合を圧入とすることにより基板２０と栓体１０とを結合ユニットとして簡便に取扱いうるほか、上述した両者の相対位相の設定をその結合と同時に果すことができる。しかも図２に示すごとく、実質的に締代を付与された上方の開口部を除き、貫孔２１の残部を円柱頭部１２の基端（下方）に向けて拡開するテーパ状に形成すれば、該円柱頭部１２の嵌合（圧入）を至極滑らかに行うことができる。また、胴部１１の下面及び円柱頭部１２の上面には、中心軸線上に整合して凹陥部１４がそれぞれ形成されて、注射針の挿通肉厚が局部的に短縮せしめられており、これによって真空引きやガス注入時における注射針の挿通抵抗が緩和されるので、鍔１１ａの抵抗に加えて栓体１０の無用な変形を有効に抑制することができる。
【００１６】
本実施形態は上述のように構成されており、栓体１０と基板２０とは、栓体１０の鍔１１ａに形成された切欠き面１１ｂを基板２０の係止面２０ａと整合させながら、円柱頭部１２を貫孔２１に圧入することにより予め結合ユニットとして準備されている。勿論、該円柱頭部１２の圧入は貫孔２１のテーパ状部に案内されて、いとも簡単に行うことができる。
【００１７】
そして機内に潤滑油が封入され、封栓装置によって吸入孔２を密閉するに当っては、基板２０に貫設された締付ボルト３０の取付孔２５を視認又は随意の方法でねじ孔３と整合させて、栓体１０の胴部１１を吸入孔２に圧入する。圧入の終端位置は鍔１１ａ及びこれとほぼ符合する基板２０の下面が、接続部１の取付面１ａと衝接することにより規制されるので、この状態で締付ボルト３０をねじ孔３に螺合させれば、基板２０の押付部２２を介して栓体１０は接続部１に固定される。その後、両凹陥部１４、１４間に注射針が挿通されて、機内に向けた真空引き並びにガス注入が行われて防錆、防塵のための予防措置は完了する。このとき、該凹陥部１４がもたらす注射針の挿通抵抗の緩和が、生産性の向上にも少なからず寄与することは改めて説明するまでもない。
【００１８】
このように予防措置を施された圧縮機が、搬送や格納を経て空調装置の配管系と接続される際には、締付ボルト３０を抜き出したのち、把手部１３を把持して基板２０もろとも栓体１０を引き上げれば、封栓装置は難無く吸入孔２から取外すことができる。
図４は本発明の第２の実施形態を示すもので、基板２０Ａの押付部２２Ａに凹部２２ａが形成され、把手部１３Ａはその一部が該凹部２２ａと係合することにより位置決めされている。なお、把手部１３Ａは胴部１１の上縁に一体的に形成延在されている。
【００１９】
すなわち、この実施形態では、胴部１１の上縁に上述した鍔１１ａが設けられていないが、上記取付面１ａと押付部２２Ａとの間に存在する把手部１３Ａの挟着部分が、栓体１０Ａに作用する孔内方向への力に十分抵抗している。加えてこの実施形態では、吸入孔２の内部に段差部２ａが設けられ、胴部１１の下端面がこの段差部２ａでサポートされており、鍔１１ａの不存在分を段差部２ａで補っている。図５は本発明の第３の実施形態を示すもので、栓体１０Ｂの胴部１１上縁に形成された鍔１１ａがねじ孔３の周辺にまで延在され、延在された鍔部１１ｂには基板２０Ｂのボルト取付孔２５と整合する通孔１１ｃが貫設されている。そして両孔２５、１１ｃにボルト３０を挿通することにより、基板２０Ｂと栓体１０Ｂは接続部１に共締めされている。この場合、該鍔１１ｂが栓体１０Ｂを吸入孔２の内方へ押し込む力に対してより抵抗することは勿論、ボルト３０の存在によっても一層強化されている。また、基板２０Ｂのボルト取付孔２５と鍔部１１ｂの通孔１１ｃとを一致させれば、把手部１３の位相も同時に設定される。
【００２０】
図６、７は本発明の第４の実施形態を示すもので、上記第３の実施形態に加えて、基板２０Ｃの下面に、延在された鍔部１１ｂを囲包するリブ２６が形成されており、このリブ２６と該鍔部１１ｂとを係合させることにより、把手部１３の位相、つまり基板２０Ｃと栓体１０Ｃとの相対位相を一層簡便に設定することができる。しかもこのリブ２６の存在は、ボルト３０の締着に伴う鍔１１ａ、鍔部１１ｂの過変形を抑制しうる点でも有利である。
【００２１】
【発明の効果】
以上、詳述したように、請求項１〜８の封栓装置は、圧縮機の吸入孔又は吐出孔に密合された栓体が、その上方を覆蓋する基板と既存のねじ孔を利用した締付ボルトによって接続部に固定されるので、搬送時の振動、衝撃にも弛緩や脱落の虞れは全くなく、一方、その取外しに際しては、各圧縮機の最も好適な不干渉位置に延出する把手部の介助により、栓体をきわめて容易に抜き出すことができる。とりわけ請求項２、３、５、７記載の封栓装置のように、基板と栓体との間に位置決め手段を有するものでは、把手部の位相をごく簡便に設定することができる。
【００２２】
しかも栓体はゴム質からなるため、真空引きやガス注入のための注射針の挿通も可能であるが、請求項４〜７記載の封栓装置のように、栓体の胴部上縁に把手部に連なった鍔を有するものでは、注射針の挿通など栓体を孔内へ押し込もうとする力にも十分抵抗でき、また、請求項８記載の封栓装置のように、基板の貫孔と栓体の円柱頭部とを圧入嵌合とし、さらに貫孔の下方部分をテーパ状に避退させたものでは、きわめて滑らかな嵌合により両者を結合ユニットとして簡便に取扱うことができる。
【図面の簡単な説明】
【図１】本発明装置が装着される圧縮機を示す一部省略斜視図。
【図２】本発明装置の第１の実施形態を示す図３のＩＩ−ＩＩ線断面図。
【図３】図２のＩＩＩ−ＩＩＩ線矢視図。
【図４】本発明装置の第２の実施形態を示す断面図。
【図５】本発明装置の第３の実施形態を示す断面図。
【図６】本発明装置の第４の実施形態を示す図７のＶＩ−ＶＩ線断面図。
【図７】図６のＶＩＩ−ＶＩＩ線矢視図。
【図８】従来例を示す断面図。
【図９】従来例を示す断面図。
【符号の説明】
１は機体の接続部、２は吸入孔、３はねじ孔、１０は栓体、１１は胴部、１１ａは鍔、１２は円柱頭部、１３は把手部、１４は凹陥部、２０は基板、２１は貫孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealing device for a compressor, and more specifically, seals a suction hole or a discharge hole opened in a connecting portion of the compressor to prevent corrosion and dust from entering the compressor during transportation and storage. The present invention relates to a sealing device.
[0002]
[Prior art]
In general, a compressor provided for vehicle air conditioning is factory-produced as a single part, and then lubricated with oil in advance to serve as rust prevention inside the fuselage. For example, as shown in FIG. 8, a rubber cap 50 is crowned in the suction hole 40a formed in the connecting portion 40 of the compressor, and a similar cap is crowned in the discharge hole (not shown) so that the inside of the machine is Sealed. Thereafter, the compressor is transported to the vehicle assembly factory and mounted as a part of the air conditioner. At that time, the cap 50 is removed, and the suction hole 40a is fitted with a suction pipe via a connector.
[0003]
FIG. 9 illustrates another aspect of the cap. The cap 60 is formed of a resin material, and a handle portion 60c extends from the upper portion of the cap body 60a via an arm portion 60b. The cap 60 is fixed by being fastened to the upper surface of the connection portion 40 by a bolt 61. The bolt 61 is coupled by using the screw hole when the above-described suction pipe connector is attached, and a rubber seal ring 62 is attached to the outer peripheral surface of the cap body 60a so as to suck the suction hole. The 40a seal is retained.
[0004]
[Problems to be solved by the invention]
However, since the former cap 50 described above is fixed to the suction hole 40a only by elastic deformation corresponding to the applied tightening allowance, there is a possibility that the cap 50 may come off from the suction hole 40a due to vibration, impact, or the like during conveyance. is there. In addition, the compressor may have a long storage period due to circumstances of the vehicle assembly factory, and many of them are sealed with gas for dust prevention and rust prevention. This gas filling is to inject a predetermined amount of helium gas or nitrogen gas into the evacuated machine to maintain the pressure inside the machine higher than the atmospheric pressure. The concern of 50 slack and dropout is further encouraged.
[0005]
On the other hand, the latter cap 60 is surely prevented from falling off by the bolt 61, but is formed of a resin material having a certain degree of rigidity, so that the injection needle necessary for evacuation and gas injection is used. It is difficult to insert.
An object of the present invention is to provide a sealing device that can easily attach and detach the suction hole or the discharge hole and does not have a risk of dropping, and can easily cope with gas filling.
[0006]
[Means for Solving the Problems]
2. The compressor plugging device according to claim 1, wherein the compressor has a suction hole and a discharge hole at a connection portion of the fuselage, and a screw hole for fixing a pipe connector is formed in the vicinity thereof. A sealing device for preventively sealing the suction hole or the discharge hole, which has a barrel portion fitted into the suction hole or the discharge hole and a cylindrical head portion protruding from the upper surface of the barrel portion. A plug body made of rubber and a substrate having a through hole into which the cylindrical head portion is fitted and fastening the plug body to the connection portion using the screw hole, and a trunk portion of the plug body A handle portion is provided on the upper edge, and the handle portion is located between the connection portion and the substrate and extends to the outside of the substrate.
[0007]
In this sealing device, the suction hole or the discharge hole is securely sealed by press-fitting the barrel part of the plug body into the suction hole or the discharge hole opened in the connection part of the compressor, and the barrel part. The plug body is completely fastened to the connecting portion by bolting the base plate covering the upper portion of the base plate using the existing screw holes. At this time, since the handle portion is located between the connecting portion and the substrate and extends to the outside of the substrate from the upper edge of the body portion, the substrate is also removed through the handle portion when removing the plug body. The plug body is not left in the suction hole or the discharge hole.
[0008]
Further, as in the sealing device according to claim 2, if the grip portion is positioned in a predetermined phase direction by the positioning means of the substrate, the handle portion can be set at a position that is extremely easy to handle without interfering with the airframe at all. . At this time, if the positioning means is constituted by the concave portion of the substrate that engages with the handle portion as in the sealing device according to the third aspect, the positioning of the handle portion can be performed very simply.
[0009]
The stopper is made of rubber and can be sufficiently inserted into the injection needle for evacuation and gas injection. However, as in the sealing device according to claim 4, the handle is formed on the upper edge of the trunk. In the case where a ridge that is connected to the portion is formed and the heel is sandwiched between the substrate and the connecting portion, this heel is caused by the force of pushing the plug into the hole, such as insertion of an injection needle. Resist reliably.
[0010]
In addition, as in the sealing device described in claim 5, if a notch surface is formed at a predetermined position of the ridge, and a locking surface that engages with the notch surface is formed on the substrate, the claim 3 is described. As with the sealing device, the positioning of the handle is simplified. Further, as in the sealing device according to claim 6, in the case where the ridge is extended to the periphery of the screw hole, and the through hole that is aligned with the bolt mounting hole of the substrate is provided in the extended ridge portion, More effectively resists forces that try to push them into the holes. And if the rib which encloses the collar part extended to the board | substrate is formed like the sealing device of Claim 7, and this rib is used as the positioning means of a handle part, the extended collar part The phase of the handle portion, that is, the relative phase between the substrate and the plug can be set more simply by engaging the rib with the rib.
[0011]
Moreover, if a tightening margin is given to the fitting between the through hole formed in the substrate and the cylindrical head formed in the plug, the substrate and the plug can be easily handled as a coupling unit, In particular, as in the sealing device according to claim 8, in which the remaining part of the through hole excluding a part of the fastening allowance is formed in a tapered shape that expands toward the proximal end of the cylindrical head, The fitting can be performed extremely smoothly.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the first embodiment of the present invention will be specifically described with reference to the drawings.
1 to 3, a connecting portion 1 connected to a piping system of an air conditioner is provided in an outer portion such as a cylinder block and a housing constituting the compressor 100, and a suction surface is provided on a mounting surface 1 a of the connecting portion 1. A hole 2 and a discharge hole 2 'are opened, and a screw hole 3 for fixing a pipe connector is formed in the vicinity of both the holes 2, 2'. Note that the sealing device according to the present invention prophylactically seals the suction hole 2 or the discharge hole 2 ′, and any of them can be implemented in the same form. Only the sealing device for sealing the suction hole 2 will be described.
[0013]
The plug body 10 constituting the sealing device is made of rubber, and includes a body portion 11 fitted into the suction hole 2 and a cylindrical head portion 12 protruding from the upper surface of the body portion 11. On the other hand, the press-fit terminal position of the body 11 to which a predetermined tightening allowance is applied is regulated by a flange (flange) 11a protruding from the upper edge of the body 11 contacting the mounting surface 1a. On the other hand, the substrate 20 constituting the sealing device together with the plug body 10 has a through-hole 21 into which the cylindrical head portion 12 of the plug body 10 is inserted, and a pressing portion 22 that covers the upper portion of the body portion 11, and an existing one. And a boss portion 23 surrounding the mounting hole 25 of the fastening bolt 30 screwed into the screw hole 3. Reference numeral 24 denotes a reinforcing rib extending from the boss portion 23 along the periphery of the pressing portion 22.
[0014]
In order to facilitate the operation of extracting the plug body 10 from the suction hole 2, a handle portion 13 that extends in a radial direction from a part of the flange 11 a and directs a predetermined phase is provided. The portion 13 is positioned by relative engagement between the notch surface 11b of the flange 11a and the locking surface 20a of the substrate 20 so as to obtain a phase angle θ that can be gripped freely without interfering with the outer shell portion of the machine body. Yes.
[0015]
Note that the fitting between the through hole 21 of the substrate 20 and the cylindrical head portion 12 formed in the plug body 10 does not necessarily require the provision of a tightening allowance, but the substrate can be formed by press fitting this fitting. 20 and the plug body 10 can be easily handled as a coupling unit, and the relative phase of both can be set simultaneously with the coupling. Moreover, as shown in FIG. 2, the remaining portion of the through-hole 21 is formed in a tapered shape that expands toward the base end (downward) of the cylindrical head portion 12 except for the upper opening that is substantially tightened. In this case, the cylindrical head 12 can be fitted (press-fit) extremely smoothly. In addition, a concave portion 14 is formed on the lower surface of the body portion 11 and the upper surface of the cylindrical head portion 12 so as to be aligned with the central axis, and the insertion wall thickness of the injection needle is locally shortened. As a result, the insertion resistance of the injection needle during evacuation or gas injection is relaxed, so that unnecessary deformation of the plug 10 can be effectively suppressed in addition to the resistance of the flange 11a.
[0016]
The present embodiment is configured as described above, and the plug body 10 and the substrate 20 are formed in a cylindrical shape while aligning the notch surface 11b formed in the flange 11a of the plug body 10 with the locking surface 20a of the substrate 20. The head unit 12 is prepared in advance as a coupling unit by press-fitting the head 12 into the through hole 21. Of course, the press-fitting of the cylindrical head portion 12 is guided by the tapered portion of the through hole 21 and can be easily performed.
[0017]
When the lubricating oil is sealed in the machine and the suction hole 2 is sealed by the sealing device, the mounting hole 25 of the tightening bolt 30 penetrating the substrate 20 is visually confirmed or optionally formed with the screw hole 3. The body portion 11 of the plug 10 is press-fitted into the suction hole 2 in alignment. The end position of the press-fitting is regulated by the flange 11a and the lower surface of the substrate 20 substantially coincident with this being brought into contact with the mounting surface 1a of the connecting portion 1, so that the tightening bolt 30 is screwed into the screw hole 3 in this state. Then, the plug body 10 is fixed to the connection portion 1 through the pressing portion 22 of the substrate 20. Thereafter, an injection needle is inserted between the concave and convex portions 14 and 14, vacuuming and gas injection are performed toward the inside of the machine, and the preventive measures for rust prevention and dust prevention are completed. At this time, needless to say, the relief of the insertion resistance of the injection needle caused by the recess 14 contributes to the improvement of productivity.
[0018]
When the compressor with such precautions is connected to the piping system of the air conditioner through transportation and storage, the clamping bolt 30 is pulled out, and then the grip portion 13 is gripped to break the substrate 20. In both cases, if the stopper 10 is pulled up, the sealing device can be removed from the suction hole 2 without difficulty.
FIG. 4 shows a second embodiment of the present invention. A concave portion 22a is formed in the pressing portion 22A of the substrate 20A, and the handle portion 13A is positioned by engaging a part of the concave portion 22a. . The handle portion 13 </ b> A is integrally formed and extended on the upper edge of the trunk portion 11.
[0019]
That is, in this embodiment, the above-described flange 11a is not provided on the upper edge of the trunk portion 11, but the sandwiched portion of the handle portion 13A existing between the mounting surface 1a and the pressing portion 22A is plugged. It sufficiently resists the inward force acting on 10A. In addition, in this embodiment, a stepped portion 2a is provided inside the suction hole 2, and the lower end surface of the trunk portion 11 is supported by the stepped portion 2a, and the absence of the flange 11a is compensated by the stepped portion 2a. Yes. FIG. 5 shows a third embodiment of the present invention. A flange 11a formed on the upper edge of the body 11 of the plug 10B is extended to the periphery of the screw hole 3, and the extended flange 11b is extended. Is formed with a through hole 11c aligned with the bolt mounting hole 25 of the substrate 20B. And the board | substrate 20B and the plug 10B are fastened together by the connection part 1 by inserting the volt | bolt 30 in both the holes 25 and 11c. In this case, the flange 11b is further strengthened by the presence of the bolt 30 as well as resisting the force of pushing the plug 10B into the suction hole 2 inward. Moreover, if the bolt mounting hole 25 of the board | substrate 20B and the through-hole 11c of the collar part 11b are corresponded, the phase of the handle part 13 will also be set simultaneously.
[0020]
6 and 7 show a fourth embodiment of the present invention. In addition to the third embodiment, a rib 26 is formed on the lower surface of the substrate 20C so as to surround the extended flange portion 11b. By engaging the rib 26 and the flange portion 11b, the phase of the handle portion 13, that is, the relative phase between the substrate 20C and the plug 10C can be set more easily. In addition, the presence of the rib 26 is advantageous in that it can suppress over-deformation of the flange 11a and the flange portion 11b accompanying the fastening of the bolt 30.
[0021]
【The invention's effect】
As described above in detail, in the plugging device according to claims 1 to 8, the plug body tightly fitted to the suction hole or the discharge hole of the compressor uses the substrate and the existing screw hole covering the upper part thereof. Since it is fixed to the connection part with a tightening bolt, there is no risk of loosening or dropping off during vibration or shock during transportation. On the other hand, when removing it, it extends to the most suitable non-interfering position of each compressor. With the assistance of the handle portion, the plug can be extracted very easily. In particular, in the case of the sealing device according to the second, third, fifth, and seventh aspects having the positioning means between the substrate and the plug, the phase of the handle portion can be set very simply.
[0022]
Moreover, since the plug body is made of rubber, it is possible to insert an injection needle for evacuation or gas injection. However, like the sealing device according to claims 4 to 7, the plug body is formed on the upper edge of the body portion of the plug body. In the case of having a hook connected to the handle portion, it can sufficiently resist the force of pushing the plug body into the hole, such as the insertion of an injection needle, and, as in the sealing device according to claim 8, In the case where the through hole and the cylindrical head of the plug body are press-fitted and the lower part of the through hole is retracted in a tapered shape, both can be easily handled as a coupling unit by a very smooth fitting. .
[Brief description of the drawings]
FIG. 1 is a partially omitted perspective view showing a compressor to which a device of the present invention is mounted.
2 is a cross-sectional view taken along the line II-II of FIG. 3 showing a first embodiment of the device of the present invention.
3 is a view taken along the line III-III in FIG.
FIG. 4 is a cross-sectional view showing a second embodiment of the device of the present invention.
FIG. 5 is a cross-sectional view showing a third embodiment of the device of the present invention.
6 is a cross-sectional view taken along the line VI-VI of FIG. 7 showing a fourth embodiment of the device of the present invention.
7 is a view taken along the line VII-VII in FIG. 6;
FIG. 8 is a cross-sectional view showing a conventional example.
FIG. 9 is a cross-sectional view showing a conventional example.
[Explanation of symbols]
1 is a connecting part of the fuselage, 2 is a suction hole, 3 is a screw hole, 10 is a plug, 11 is a trunk, 11a is a collar, 12 is a cylindrical head, 13 is a handle part, 14 is a recessed part, 20 is a substrate , 21 is a through hole

Claims

Seal used to prevent the suction hole or discharge hole from being used in a compressor having a suction hole and a discharge hole opened in the connection part of the fuselage, and a screw hole for fixing a pipe connector in the vicinity thereof. An apparatus, comprising: a barrel portion fitted into the suction hole or the discharge hole; a rubber stopper having a cylindrical head portion protruding from an upper surface of the trunk portion; and a through hole into which the cylindrical head portion is fitted. And a board for fastening the plug body to the connection portion using the screw hole, and a handle portion is provided on an upper edge of the trunk portion of the plug body, and the handle portion is connected to the connection portion. A sealing device for a compressor, which is located between the substrate and extends to the outside of the substrate.

2. The sealing device for a compressor according to claim 1, wherein the substrate includes positioning means for extending the grip portion in a predetermined phase direction.

3. The sealing device for a compressor according to claim 2, wherein the positioning means includes a concave portion provided on a surface facing the handle portion and engaged with the handle portion.

3. The compressor according to claim 1, wherein a flange connected to the handle portion is formed at an upper edge of the body portion, and the flange is sandwiched between the substrate and the connection portion. Sealing device.

5. A sealing device for a compressor according to claim 4, wherein a notch surface is formed at a predetermined position of the flange, and the positioning means comprises a locking surface formed on the substrate and engaged with the notch surface. .

5. The compression according to claim 4, wherein the flange extends to the periphery of the screw hole, and a through hole that is aligned with the bolt mounting hole of the substrate is provided through the extended flange portion. Machine sealing device.

7. The compressor sealing device according to claim 6, wherein the substrate has a rib surrounding a flange extending to the periphery of the screw hole, and the rib constitutes the positioning means. .

A part of the through hole on the substrate has a fitting allowance between the cylindrical head of the plug body, and the remaining part of the through hole is tapered toward the base end of the cylindrical head. 8. The compressor plugging device according to claim 1, wherein the sealing device is a compressor.