JPS5515369A - Piston cup - Google Patents

Piston cup

Info

Publication number
JPS5515369A
JPS5515369A JP8874178A JP8874178A JPS5515369A JP S5515369 A JPS5515369 A JP S5515369A JP 8874178 A JP8874178 A JP 8874178A JP 8874178 A JP8874178 A JP 8874178A JP S5515369 A JPS5515369 A JP S5515369A
Authority
JP
Japan
Prior art keywords
angle
leading part
cup
cylinder
cylinder wall
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.)
Granted
Application number
JP8874178A
Other languages
Japanese (ja)
Other versions
JPS5925905B2 (en
Inventor
Kaoru Nakamura
Masatoshi Yamada
Junzo Hasegawa
Eiichi Yasuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Toyota Central R&D Labs Inc
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Toyota Motor Corp
Toyota Central R&D Labs Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aisin Seiki Co Ltd, Toyota Motor Corp, Toyota Central R&D Labs Inc filed Critical Aisin Seiki Co Ltd
Priority to JP53088741A priority Critical patent/JPS5925905B2/en
Publication of JPS5515369A publication Critical patent/JPS5515369A/en
Publication of JPS5925905B2 publication Critical patent/JPS5925905B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Pistons, Piston Rings, And Cylinders (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

PURPOSE: To scheme to improve brake feeling and increase the life by specifying the angle of the leading part against a cylinder shaft and the form of the top end part of the leading part.
CONSTITUTION: As for a piston cup 100, the leading part 106 of outer circumferential side sealing surface of the outside lip 101 is inclined at an angle θ for the line parallel to the cylinder shaft, reducing said angle θ smaller than the angle α of the residual part, and the top end part 107 of the leading part 106 is cut at the point S at an angle β, and an edge part is formed at the point S. Thus, when the piston cup 100 is inserted between the cylinder and the piston, the leading part 106 is parted at a relatively small tilt angle from the cylinder wall, and when the cup 100 slides on the cylinder wall, the leading part 106 forms an oil membrane in wedge form against the cylinder wall surface, displaying fluid lubrication action, and a thin fluid membrane is formed between the cylinder wall and the cup 100, and the decrease or the disappearance of fluid lubrication action is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP53088741A 1978-07-20 1978-07-20 piston cup Expired JPS5925905B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53088741A JPS5925905B2 (en) 1978-07-20 1978-07-20 piston cup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53088741A JPS5925905B2 (en) 1978-07-20 1978-07-20 piston cup

Publications (2)

Publication Number Publication Date
JPS5515369A true JPS5515369A (en) 1980-02-02
JPS5925905B2 JPS5925905B2 (en) 1984-06-22

Family

ID=13951335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53088741A Expired JPS5925905B2 (en) 1978-07-20 1978-07-20 piston cup

Country Status (1)

Country Link
JP (1) JPS5925905B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115767U (en) * 1984-01-17 1985-08-05 トヨタ自動車株式会社 master cylinder
JPS62144831U (en) * 1986-03-08 1987-09-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115767U (en) * 1984-01-17 1985-08-05 トヨタ自動車株式会社 master cylinder
JPS62144831U (en) * 1986-03-08 1987-09-12
JPH0221464Y2 (en) * 1986-03-08 1990-06-11

Also Published As

Publication number Publication date
JPS5925905B2 (en) 1984-06-22

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