EP0068769A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A robot wrist of an industrial robot
Assignee: Fanuc Corp
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Filing: 1982-06-21
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Granted: —
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Expires: 2002-06-21
Abstract
Abstract ® A robot wrist of an industrial robot having a wrist housing supporting two orthogonally arranged rotating output shafts therein, each of the shafts being connected to a robot hand, and a built-in fluid conveying means provided for distributing pressurized air introduced from the outside of the robot wrist toward the robot hand attached to one of the rotating output shafts. An output end of each of the two rotating output shafts may either be plugged by a plug element or closed by a stop valve when the output end is not connected to the robot hand.
Inventors
- 👤 Hajimu Inaba
- 👤 Shigemi Inagaki
- 👤 Susumu Ito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:55
CPC Classifications
B; B25; B25J; B25J19/00; B25J19/0025; B25J19/0029; B25J15/00; B25J15/0052; B25J15/04; B25J17/00; B25J17/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86268
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A robot wrist attached to an end of a robot arm of an industrial robot for attaching thereto a manipulative robot hand, comprising: a wrist housing means for supporting therein two rotating output shafts, each having an output end thereof disposed in one of two substantially orthogonally arranged end faces of said housing means; a rotation drive means for rotating said two rotating output shafts; a fluid conduit means provided in said two rotating output shafts for distributing pressurized fluid to said output ends while said pressurized fluid is introduced into said wrist housing means; a means for conveying said pressurized fluid from outside of said wrist housing means toward said fluid conduit means; and a coupling means for providing a tight connection between said conveying means and said fluid conduit means.
Claim 2
Dependent Claim
132 words
A robot wrist attached to an end of a robot arm of an industrial robot for attaching thereto a manipulative robot hand, comprising: a wrist housing means for supporting therein two rotating output shafts, each having an output end thereof disposed in one of two substantially orthogonally arranged end faces of said housing means; a rotation drive means for rotating said two rotating output shafts; a fluid conduit means provided in said two rotating output shafts for distributing pressurized fluid to said output ends while said pressurized fluid is introduced into said wrist housing means; a means for conveying said pressurized fluid from outside of said wrist housing means toward said fluid conduit means; and a coupling means for providing a tight connection between said conveying means and said fluid conduit means.
Claim 3
Dependent Claim
44 words
A robot wrist as set forth in claim 1, further comprising two stop valves, each being arranged in said output end of each said rotating output shaft, each said stop valve being openable when said robot hand is attached to each said output end.
Claim 4
Dependent Claim
43 words
A robot wrist as set forth in claim 2, wherein each said stop valve comprises a valve seat held in said output end of each said rotating output shaft, a ball valve, and spring means pressing said ball valve against said valve seat.
Claim 5
Dependent Claim
75 words
A robot wrist as set forth in claim 1, wherein said fluid conduit means comprises fluid passageways formed in said two rotating output shafts, said fluid passageways extending toward each of said output ends of said two rotating output shafts from a common fluid input port formed in a part of one of said two rotating output shafts, said fluid input port being fluidly connected to said conveying means by means of said coupling means.
Claim 6
Dependent Claim
52 words
A robot wrist as set forth in claim 4, wherein said conveying means comprises a fluid conveying pipe held in said wrist housing means and wherein said coupling means comprises a coupling element having a bearing bore in which said one rotating output shaft having said fluid inlet port is rotatably fitted.
Claim 7
Dependent Claim
35 words
A robot wrist as set forth in claim 1, wherein said two rotating output shafts are commonly driven by said rotation drive means by means of a pair of bevel gear engaged with one another.
Claim 8
Dependent Claim
18 words
A robot wrist as set forth in claim 6, wherein said rotation drive means comprises an electric servomotor.
References Cited (Backward Citations)
No citation records indexed.
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