JPH0138370Y2 - - Google Patents
Info
- Publication number
- JPH0138370Y2 JPH0138370Y2 JP16513485U JP16513485U JPH0138370Y2 JP H0138370 Y2 JPH0138370 Y2 JP H0138370Y2 JP 16513485 U JP16513485 U JP 16513485U JP 16513485 U JP16513485 U JP 16513485U JP H0138370 Y2 JPH0138370 Y2 JP H0138370Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- seal
- shaft
- tapered
- blower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000007789 sealing Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 2
- 230000013011 mating Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、軸封技術に係る軸封装置の改良に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a shaft sealing device related to shaft sealing technology.
従来から自動車用過給機に用いられる軸封装置
の一種として、第３図に示すように、ボデイａに
対しリテーナｂを介して固定したシールリングｃ
を、その背後に設けたコイルスプリングｄの弾性
によつてシヤフトｅに外挿嵌着したメイテイング
リングｆの端面に押し付ける構成のものが知られ
ている。
As a type of shaft seal device conventionally used in automobile superchargers, as shown in Fig. 3, a seal ring c is fixed to a body a via a retainer b.
A structure is known in which the mating ring f is pressed against the end face of a mating ring f which is externally fitted onto the shaft e by the elasticity of a coil spring d provided behind the mating ring f.
上記軸封装置は、機内スラスト軸受ｇ側の油ｏ
のブロワｈ側への漏洩を阻止する機能を営むもの
であるが、シールリングｃとメイテイングリング
ｆを、常時、互いに摺接する形成になるために摺
動トルクを生じ、このトルクが大きいと当該過給
機の立上り特性が悪く、エンジンの出力応答性に
悪影響を与える問題がある。
The above-mentioned shaft sealing device has oil o on the in-machine thrust bearing g side
However, since the seal ring c and the mating ring f are always in sliding contact with each other, a sliding torque is generated, and if this torque is large, the supercharging There is a problem that the startup characteristics of the aircraft are poor, which adversely affects the output response of the engine.
本考案は、上記事情に鑑みて摺動トルクの発生
を極力抑えて上記問題点を一掃するとともにシー
ル性能や耐久性能に優れた軸封装置を提供するこ
とを目的とするもので、この目的を達成するた
め、シヤフトに外挿嵌着される回転環とボデイの
軸孔内周に嵌着される固定環の双方対向周面をテ
ーパ状に形成して被シール流体側へ向けて漸次拡
径するテーパ状の間隙空間を設定し、該空間内に
ネジシールを設け、さらに前記間隙空間の一端開
口に、前記一方の環に連結したリテーナに支持さ
れて内外の圧力差により相手環に接離するシール
環を配設する構成とした。
In view of the above circumstances, the purpose of this invention is to suppress the generation of sliding torque as much as possible to eliminate the above problems, and to provide a shaft sealing device with excellent sealing performance and durability. In order to achieve this, the opposing circumferential surfaces of the rotating ring, which is fitted externally to the shaft, and the fixed ring, which is fitted to the inner periphery of the shaft hole of the body, are tapered to gradually expand their diameters toward the fluid to be sealed. A tapered gap space is set, a screw seal is provided in the space, and the gap space is supported by a retainer connected to the one ring at one end opening of the gap space, and is moved toward and away from the other ring by a pressure difference between the inside and outside. The structure is such that a seal ring is provided.
上記過給機のブロワｈ側圧力は、エンジンの負
荷状態によつて−50〜＋600mmHgの間で変動し、
ブロワｈ側が負圧になつたときに油ｏが漏洩する
おそれがある。一方、エンジンの出力応答性の向
上が要求されるのは自動車を加速するときであ
り、加速時のブロワｈ側圧力は常に正圧である。
ブロワｈ側が負圧になるのはエンジンブレーキ時
やアイドリング時であり、このときエンジンの出
力応答性は問題とされない。
The pressure on the blower h side of the supercharger fluctuates between -50 and +600 mmHg depending on the engine load condition,
There is a risk that oil o may leak when the blower h side becomes negative pressure. On the other hand, improvement in the output response of the engine is required when accelerating the automobile, and the pressure on the blower h side during acceleration is always positive.
The negative pressure on the blower h side occurs during engine braking or idling, and the output response of the engine is not a problem at this time.
本考案の軸封装置は、この点を考慮して、エン
ジンの加速時に、前記シール環を相手環から離
し、ネジシール単独の非接触シールを構成して摺
動トルクを零とし、エンジンの出力応答性を向上
させ、エンジンブレーキ時やアイドリング時に、
シール環を相手環に摺接してシール性を向上させ
るようになる。 Taking this point into consideration, the shaft seal device of the present invention separates the seal ring from the mating ring when the engine accelerates, forms a non-contact seal with a screw seal alone, reduces the sliding torque to zero, and reduces the engine output response. Improves performance during engine braking and idling,
The seal ring slides into contact with the mating ring to improve sealing performance.
つぎに本考案の一実施例を図面にしたがつて説
明すると、第１図において、符号１は一部を図示
した上記自動車用過給機のボデイ、２は該ボデイ
１の軸孔に挿通したシヤフトを示し、当該軸封装
置は、機内スラスト軸受３側に封入した油ｏがシ
ヤフト２にネジ止めしたブロワ４側へ漏れること
のないようこれをシールする。
Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 indicates the body of the above-mentioned automobile supercharger, a part of which is shown, and 2 indicates a body inserted into the shaft hole of the body 1. The shaft sealing device seals the oil o sealed in the in-machine thrust bearing 3 to prevent it from leaking to the blower 4 screwed to the shaft 2.
符号５は、シヤフト２の段部２ａとブロワ４の
間にカラー６とともに挾持固定された回転環、７
は、ボデイ１の軸孔開口段部１ａに機内スラスト
軸受３とともに嵌挿され、スナツプリング８によ
り固定された固定環で、この固定環７の内周面に
環状のゴム状弾性体よりなるリテーナ９が接着一
体化されている。径方向に並設されたこの回転環
５の外周面と固定環７に接着したリテーナ９の内
周面は、互いに略平行なテーパ状に成形され、両
環５，７，９の間に油ｏを封入した機内スラスト
軸受３側へ向けて漸次拡径するテーパ状の間隙空
間１０が設定され、該空間１０内に、回転環５の
外周面にネジ加工を施こして回転時に矢示方向の
ポンプ力を生じるネジシール１１が設けられてい
る。また符号１２は、前記間隙空間１０の機内側
開口においてリテーナ９のリツプ状支持部９ａに
抱持されたシール環であつて、機内側とブロワ４
側の相対的な圧力変動により回転環５に形成した
段部端面５ａに接離する。 Reference numeral 5 denotes a rotary ring 7 which is clamped and fixed together with a collar 6 between the stepped portion 2a of the shaft 2 and the blower 4.
is a fixed ring that is fitted into the shaft hole opening step 1a of the body 1 together with the in-machine thrust bearing 3 and fixed by a snap spring 8, and on the inner peripheral surface of this fixed ring 7 is a retainer 9 made of an annular rubber-like elastic body. are integrated with adhesive. The outer circumferential surface of the rotating ring 5 arranged in parallel in the radial direction and the inner circumferential surface of the retainer 9 bonded to the fixed ring 7 are formed into a tapered shape that is substantially parallel to each other. A tapered gap space 10 is set in which the diameter gradually increases toward the in-machine thrust bearing 3 side in which the rotary ring 5 is enclosed. A threaded seal 11 is provided which produces a pumping force of . Further, reference numeral 12 denotes a seal ring held by the lip-shaped support portion 9a of the retainer 9 at the in-machine side opening of the gap space 10, and is a seal ring held between the in-machine side and the blower 4.
Due to the relative pressure fluctuations on both sides, it approaches and separates from the stepped end face 5a formed in the rotating ring 5.
上記軸封装置を備えた過給機にあつて、ブロワ
４側が正圧で機内側より高いときは、シール環１
２が該圧力差により回転環５の段部端面５ａから
離れるように揺動し、ネジシール１１単体による
非接触式のシールが構成される。したがつて摺動
トルクは生じる余地がなく、出力応答性の向上が
要求されるエンジン加速時にトルクの発生に起因
する悪影響をおよぼすことがない。またブロワ４
側が負圧で機内側より低いときは、シール環１２
が該圧力差により回転環５の段部端面５ａに適宜
面圧をもつて接触し、シール力に優れた接触式の
シールが構成されるため、油ｏを確実にシールす
る。先に述べたようにブロワ４側が負圧となるエ
ンジンレーキ時やアイドリング時にエンジンの出
力応答性は問題とされず、シール環１２と回転環
５の摺接により多少のトルクを生じても構わな
い。 In a turbocharger equipped with the above-mentioned shaft seal device, when the pressure on the blower 4 side is positive and higher than the inside of the machine, the seal ring 1
2 swings away from the stepped end face 5a of the rotary ring 5 due to the pressure difference, and a non-contact type seal is formed by the screw seal 11 alone. Therefore, there is no room for the generation of sliding torque, and there is no adverse effect caused by the generation of torque during engine acceleration, which requires improved output response. Also blower 4
When the side is under negative pressure and is lower than the inside of the machine, seal ring 12
Due to the pressure difference, the contact seal contacts the step end face 5a of the rotary ring 5 with an appropriate surface pressure, thereby forming a contact type seal with excellent sealing force, thereby reliably sealing the oil o. As mentioned earlier, the output response of the engine is not a problem during engine rake or idling when the blower 4 side is under negative pressure, and there is no problem even if some torque is generated due to the sliding contact between the seal ring 12 and the rotating ring 5. .
本考案の軸封装置は以上説明したように、接触
式のシール部から生じる摺動トルクによつて当該
軸封装置を装着する過給機やエンジン等に悪影響
をおよぼさず、これら回転機器の性能を十分に発
揮させるものである。またシール環を用いた接触
式シールをネジシールによる非接触シールを状況
に応じてうまく使い分けるものであるためシール
性能に優れ、接触式シールを常時働かせるもので
ないため摩耗の進行が遅く、その分、耐久性を向
上させることができる等の特徴を有し、本考案の
実用的効果はきわめて大きい。
As explained above, the shaft seal device of the present invention does not adversely affect the supercharger, engine, etc. to which the shaft seal device is installed due to the sliding torque generated from the contact type seal portion, and does not affect these rotating devices. This is to fully demonstrate the performance of. In addition, since the contact type seal using a seal ring and the non-contact seal using a screw seal can be used depending on the situation, the sealing performance is excellent, and since the contact type seal is not operated constantly, the progress of wear is slow, which makes it more durable. The practical effects of the present invention are extremely large.
第１図は本考案の一実施例に係る軸封装置の装
着状態を示す半裁断面図、第２図は同軸封装置の
回転環の正面図、第３図は従来の軸封装置の一例
を示す断面図である。
１……ボデイ、２……シヤフト、３……機内ス
ラスト軸受、４……ブロワ、５……回転環、７…
…固定環、９……リテーナ、１０……間隙空間、
１１……ネジシール、１２……シール環。
Fig. 1 is a half-cut sectional view showing the installed state of a shaft sealing device according to an embodiment of the present invention, Fig. 2 is a front view of a rotating ring of the coaxial sealing device, and Fig. 3 is an example of a conventional shaft sealing device. FIG. 1...Body, 2...Shaft, 3...In-machine thrust bearing, 4...Blower, 5...Rotating ring, 7...
... fixed ring, 9 ... retainer, 10 ... gap space,
11...Screw seal, 12...Seal ring.
Claims (1)
孔内周に嵌着される固定環の双方対向周面をテー
パ状に形成して被シール流体側へ向けて漸次拡径
するテーパ状の間隙空間を設定し、該空間内にネ
ジシールを設け、さらに前記間隙空間の一端開口
に、前記一方の環に連結したリテーナに支持され
て内外の圧力差により相手環に接離するシール環
を配設してなることを特徴とする軸封装置。 A rotating ring that is externally fitted on the shaft and a fixed ring that is fitted on the inner periphery of the shaft hole of the body are tapered so that the opposing circumferential surfaces of the rotating ring are tapered and the diameter gradually increases toward the fluid to be sealed. A gap space is set, a screw seal is provided in the space, and a seal ring is disposed at one end opening of the gap space, and is supported by a retainer connected to the one ring and moves toward and away from the other ring due to a pressure difference between the inside and outside. A shaft sealing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16513485U JPH0138370Y2 (en) | 1985-10-29 | 1985-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16513485U JPH0138370Y2 (en) | 1985-10-29 | 1985-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6273163U JPS6273163U (en) | 1987-05-11 |
| JPH0138370Y2 true JPH0138370Y2 (en) | 1989-11-16 |
Family
ID=31094887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16513485U Expired JPH0138370Y2 (en) | 1985-10-29 | 1985-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0138370Y2 (en) |
-
1985
- 1985-10-29 JP JP16513485U patent/JPH0138370Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6273163U (en) | 1987-05-11 |
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