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1. 发明专利

JP2000297863A PRESSURE WITHSTANDING ROTARY SHAFT SEAL 失效
公开(公告)号：JP2000297863A
公开(公告)日：2000-10-24
申请号：JP10743799
申请日：1999-04-15
申请人： MITSUBISHI CABLE IND LTD , TOYODA AUTOMATIC LOOM WORKS
发明人： OBATA HIROMI , BABA TAKESHI , FUJII TOSHIRO , YOKOMACHI HISAYA
IPC分类号： F16J15/3252 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To reduce the deformation of a lip under a high pressure and to improve durability by holding the inner periphery of a lip tip section with a support metal fixture, providing a reinforcing outer cover metal fixture on the outer periphery, and holding the lip tip section with both metal fixtures in a sandwich shape. SOLUTION: A rubber seal member 5 is constituted of a cylinder cover section 5a, an inner flange outer cover section 5b and a lip section 13, and the lip section 13 is constituted of a short cylinder section 13a parallel with a rotary shaft 32 and a lip tip section 13b shrunk in diameter toward a fluid storage chamber 33 side. A support metal fixture 12 is provided between a first seal element 7 and a seal member 5, the back face of the inner flange outer cover section 5b from the inner periphery of the lip tip section 13b through the inner periphery of the short cylinder section 13a is held by the ring-like support metal fixture 12, and a portion from the outer periphery of the lip tip section 13b to the outer periphery of the short cylinder section 5b is covered with a reinforcing outer cover metal fixture 21. The lip tip section 13b is held by the metal fixtures 12, 21 in a sandwich shape and is prevented from being directly applied with a high pressure, its deformation is reduced, and it can secure a high sealing property.

2. 发明专利

JP2001074145A ROTATING SHAFT SEAL 失效
公开(公告)号：JP2001074145A
公开(公告)日：2001-03-23
申请号：JP24887999
申请日：1999-09-02
申请人： MITSUBISHI CABLE IND LTD , TOYODA AUTOMATIC LOOM WORKS
发明人： HOSOKAWA ATSUSHI , OBATA HIROMI , FUJII TOSHIRO , YOKOMACHI HISAYA
IPC分类号： F16J15/3252 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To suppress the deformation of a lip tip under a high pressure by minutely separating the tip angle part of a rubber lip tip arranged closer to a fluid housing chamber over a seal element and slid on a rotating shaft from a rotating shaft in a non-pressurized state, and bringing it into contact with the rotating shaft in a pressurized state. SOLUTION: In the non-pressurized state of a fluid housing chamber 33, the tip angle part 14 of a lip tip 13b in a rubber lip 13 is retained in a linear contact state or minutely separated state with no fastening margin to the circumferential surface of a rotating shaft 32. In the pressurized state of the fluid housing chamber 33, a self-sealing force F1 to the circumferential surface of the rotating shaft 32 acts on the tip angle part 14 since the pressure P of a high-pressure fluid acts on the lip part 13, and the tip angle part 14 makes contact with the rotating shaft 32. On the other hand, since no straining force by the rubber elasticity of the lip 13 is generated to the circumferential surface of the rotating shaft 32, the force acting on the rotating shaft 32 of the lip tip 13b is reduced by the portion of the straining force. Accordingly, the contact surface pressure of the lip tip 13b can be reduced to reduce the wear.

3. 发明专利

JP2000179702A SHAFT SEALING DEVICE 失效
公开(公告)号：JP2000179702A
公开(公告)日：2000-06-27
申请号：JP36092298
申请日：1998-12-18
申请人： TOYODA AUTOMATIC LOOM WORKS , MITSUBISHI CABLE IND LTD
发明人： YOKOMACHI HISAYA , FUJII TOSHIRO , IMAI TAKAYUKI , MURAKAMI KAZURO , OBATA HIROMI , BABA TAKESHI
IPC分类号： F16J15/3244 , F16J15/3252 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To provide such a shaft sealing device as insures high shaft sealing performance even against the gas showing relatively high gas permeability to the seal material in use. SOLUTION: A seal 32 for a revolving shaft 17 is provided with a rubber seal element 42 and a resin seal element 43. The inner periphery of the seal element 42 is closely adhered with a thin metallic plate 50 in its entire area except a sliding part 47. Because the metallic plate 50 is thin enough, if the seal element 42 deforms elastically, the plate 50 also deforms together with the element 42, keeping close adhesion between the two. Thus, the thin metallic plate 50 is closely an firmly adhered to the surface of the seal element 42 even when the seal element 42 is press-contacted with the periphery of the revolving shaft 17 after the assembling of the seal 32 for the revolving shaft 17. In this way, a path, through which gas (carbon dioxide) showing high gas permeability to rubber or resin leaks permeating the seal elements 42, 43, can nearly be cut off by the thin metallic plate 50.

4. 发明专利

JP2002235856A SEALING DEVICE 审中-公开
公开(公告)号：JP2002235856A
公开(公告)日：2002-08-23
申请号：JP2001252011
申请日：2001-08-22
申请人： MITSUBISHI CABLE IND LTD , TOYOTA IND CORP
发明人： HOSOKAWA ATSUSHI , OBATA HIROMI , INAGAKI TOMOYA , YAMADA TAKESHI , IMAI TAKAYUKI
IPC分类号： F16J15/3252 , F16J15/40 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To provide a sealing device that exerts excellent sealing performance at a time of rotating a rotational shaft and keeps the excellent sealing performance for a long period of service. SOLUTION: The sealing device has a cover member 18 made of hard material. The cover member 18 is disposed on a fluid storage chamber 33 side and nearer than a rear seal member 6 having a rubber lip portion 7. The cover member 18 has a cylindrical portion 19, and of which inner face has screw grooves S. A minute clearance C is formed between the inside face of the cover member and an outer face of the rotational shaft 23.

5. 发明专利

JPH07139634A ROTARY SHAFT SEAL 失效
公开(公告)号：JPH07139634A
公开(公告)日：1995-05-30
申请号：JP31136193
申请日：1993-11-16
申请人： MITSUBISHI CABLE IND LTD
发明人： OBATA HIROMI , TAKEDA KENICHI
IPC分类号： F16J15/3232 , F16J15/3244 , F16J15/32
摘要： PURPOSE:To effectively prevent the leakage of a fluid when a rotary shaft is stopped, and prevent the bending and sticking-out phenomenon of the seal element to the lower pressure side. CONSTITUTION:In a seal of a rotary shaft provided with a seal element 9 having a seal lip part 16 with a spiral groove H in plane contact with an outer circumferential surface 4 of the rotary shaft 3, the spiral groove H and a flat surface part to shut off the spiral groove H are formed on the contact surface 17 of the rotary shaft of the seal lip part 16.

6. 发明专利

JP2002364760A ROTATING SHAFT SEAL 失效
公开(公告)号：JP2002364760A
公开(公告)日：2002-12-18
申请号：JP2001176652
申请日：2001-06-12
申请人： MITSUBISHI CABLE IND LTD
发明人： HOSOKAWA ATSUSHI , OBATA HIROMI , INAGAKI TOMOYA
IPC分类号： F16J15/3232 , F16J15/3276 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To provide a rotating shaft seal with a rubber seal member and a resin seal member coping with the higher pressure of a compressor cooling medium, having stable attitude, designing accuracy and improved durability. SOLUTION: A metal plate is embedded in the resin seal member and the outer-diameter ends of the resin seal member and the metal plate are made to abut on the inner periphery face of a circular protecting case. Thus, the resin seal member is rigidly fixed and so the attitude of the rotating shaft seal is stabilized and the shape of the resin seal member is also stably held, therefore reducing a thrusting influence on a rotating shaft due to high pressure and improving the durability of the seal.

7. 发明专利

JPH10184930A ROTARY SHAFT SEAL 失效
公开(公告)号：JPH10184930A
公开(公告)日：1998-07-14
申请号：JP35628496
申请日：1996-12-24
申请人： MITSUBISHI CABLE IND LTD
发明人： TAKEDA KENICHI , OBATA HIROMI
IPC分类号： F16J15/3232 , F16J15/3244 , F16J15/32
摘要： PROBLEM TO BE SOLVED: To exercise sufficient sealing performance in any rotational directions by providing a helical groove of both right and left winding directions in the contact surface side of a seal lip part with a rotary shaft in a rotary shaft seal provided with a seal element having a seal lip part surface contacted with the outer peripheral surface of the rotary shaft. SOLUTION: A rotary shaft seal 1 fitted between a housing 2 and a rotary shaft 3 and slide-contacted with the outer peripheral surface 3a of the rotary shaft 3 includes a first seal element 4 held by a first holding metal fitting 6 and a second seal element 5 held between a second holding metal fitting 7 and the first seal element 4. Helical grooves 52 and 53 are formed in the rotary shaft contact surface 51a of a seal lip part 51 surface-contacted by a specified width with the outer peripheral surface of the rotary shaft 3 formed in the second seal element 5 in both right and left winding directions. Thus, even if the rotary shaft 3 is rotated in any directions, a pumping action occurs in a returning/sending direction and sufficient sealing performance is provided for the rotations of both left and right directions.

8. 发明专利

JPH07317913A ROTARY SHAFT SEAL 失效
公开(公告)号：JPH07317913A
公开(公告)日：1995-12-08
申请号：JP13520194
申请日：1994-05-24
申请人： MITSUBISHI CABLE IND LTD , TOCHIGI FUJI SANGYO KK
发明人： OBATA HIROMI , TERAOKA MASAO
IPC分类号： F16J15/3232 , F16J15/32
摘要： PURPOSE:To provide a rotary shaft seal for improving durability in high speed rotation driving under such a condition that vacuum and pressurization act on an air side. CONSTITUTION:A rotary shaft seal which is intervened between a housing 1 and a rotary shaft 3 comprises a main ring seal element 6 which has a main lip part 4 in contact with the outer circumferencial face 3a of the rotary shaft 3, an auxiliary seal element 7 which has an auxiliary lip part 5 positioning close to the outer circumference face 3a of the rotary shaft 3 by keeping a minute void E apart, and a small communication path 9 which makes air between the main lip part 4 and the auxiliary lip part 5 release by passing it through an atmosphere open path 8 formed in the housing 1. The auxiliary element 7 is so formed that the surface film part 20 of an elastic member such as composite resin and rubber covers the surface of a metal core plate piece 19.

9. 发明专利

JPH06129546A SEAL FOR ROTATION 失效
公开(公告)号：JPH06129546A
公开(公告)日：1994-05-10
申请号：JP30828592
申请日：1992-10-21
申请人： MITSUBISHI CABLE IND LTD
发明人： OBATA HIROMI , TAKEDA KENICHI , HOSOKAWA ATSUSHI
IPC分类号： F16J15/3232 , F16J15/3236 , F16J15/3244 , F16J15/32
摘要： PURPOSE:To provide a seal for rotation, with which sealing performance is ensured even when a shaft is in a stationary state, and which can be manufactured at low cost. CONSTITUTION:A seal 1 for rotation is interposed between a housing 2 and a rotation shaft member 3, and a first seal element 11 and a second seal element 9 having grooved seal rip parts 13, 14 slidably connected to an outer peripheral surface 4 of the rotation shaft member 3 are provided on the side of a fluid storage chamber 5 and on a low pressure side 7. An elastic seal member 12 is also provided closer to the fluid storage chamber 5 than to the first seal element 11. The seal member 12 is provided with an outer periphery abutting piece part 20 closely connected to an inner surface 2a of the housing 2, an element pressure contact piece part 18 adhered to an end surface 27 in the side of the fluid storage chamber of the first seal element 11, and a seal rip part 17 slidably connected to the outer peripheral surface 4 of the rotation shaft member 3 almost in a line-contact status, in an integrated form.

10. 发明专利

JP2004157282A Electrifying roller 有权
公开(公告)号：JP2004157282A
公开(公告)日：2004-06-03
申请号：JP2002322169
申请日：2002-11-06
申请人： Mitsubishi Cable Ind Ltd , 三菱電線工業株式会社
发明人： WADA MUTSUMI , FUJIWARA SATORU , SUYAMA MAKOTO , OBATA HIROMI , YAMAMOTO AKIHIRO , ENOMOTO SADATO , KAMIBAYASHI HIROYUKI
IPC分类号： G03G15/02
摘要： PROBLEM TO BE SOLVED: To provide an electrifying roller with a gap forming member with a long service life maintaining a minute gap G between a photoreceptor drum and a roller main body at a high precision.
SOLUTION: An electrifying roller is provided with a heat shrinkable tube 2. Both end parts 1a of a resin roller main body 1 are covered with the heat shrinkable tube 2 and the minute gap G is formed between the surface 3a of a drum 3 and the surface of the roller main body 1.
COPYRIGHT: (C)2004,JPO

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