Chuck apparatus

Patent metadata

Field	Value
Publication number	US-10183335-B2
Application number	US-201615173872-A
Country	US
Kind code	B2
Filing date	Jun 6, 2016
Priority date	Jun 30, 2015
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A chuck apparatus grips a workpiece by a gripping section having a pair of chuck members. The chuck apparatus is equipped with a cover member and pressing members. The cover member includes insertion holes through which fingers of the chuck members are inserted, and seal members that surround the insertion holes and abut against the fingers. The cover member is attached to a body so as to cover base portions of the chuck members, and is elastically deformable so as to follow displacement of the chuck members. The pressing members press the seal members against the fingers.

First claim

What is claimed is:

1. A chuck apparatus comprising a body and a gripping section configured to be opened and closed, the gripping section including a pair of chuck members supported on the body, wherein at least one of the chuck members is movable with respect to the body, and a workpiece is gripped by the gripping section, wherein the chuck apparatus further comprises:
a cover member including an insertion hole therein through which a finger of the one of the chuck members is inserted, and a seal member configured to surround the insertion hole and abut against the finger, wherein the cover member is attached to the body so as to cover base portions of the chuck members, and is elastically deformable so as to follow displacement of the one of the chuck members; and
a pressing member configured to press the seal member against the finger, the seal member being press-fitted between the finger and the pressing member, wherein
the pressing member includes a plurality of pressing sections arranged alongside one another in a circumferential direction; and
the seal member is fitted between the plurality of pressing sections and the finger.

2. The chuck apparatus according to claim 1 , wherein:
the pressing member is formed in an annular shape surrounding the finger; and
the seal member is sandwiched in an elastically compressed state between the pressing member and the finger.

3. The chuck apparatus according to claim 1 , wherein the pressing member is disposed on an outer side of the cover member.

4. The chuck apparatus according to claim 1 , wherein:
of the pair of chuck members, another chuck member also is movable with respect to the body;
the cover member further includes another insertion hole and another seal member formed corresponding to the other chuck member; and
another pressing member is further provided corresponding to the other chuck member.

5. The chuck apparatus according to claim 1 , wherein the pressing member is configured to place an inner circumferential surface of the seal member in abutment against an outer circumferential surface of the finger.

6. A chuck apparatus comprising a body and a gripping section configured to be opened and closed, the gripping section including a pair of chuck members supported on the body, wherein at least one of the chuck members is movable with respect to the body, and a workpiece is gripped by the gripping section, wherein the chuck apparatus further comprises:
a cover member including an insertion hole therein through which a finger of the one of the chuck members is inserted, and a seal member configured to surround the insertion hole and abut against the finger, wherein the cover member is attached to the body so as to cover base portions of the chuck members, and is elastically deformable so as to follow displacement of the one of the chuck members; and
a pressing member configured to press the seal member against the finger, the seal member being press-fitted between the finger and the pressing member,
wherein the pressing member is disposed on an inner side of the cover member.

Assignees

• Smc Corp

Inventors

• Hara Koji
• Ishibashi Koichiro

Classifications

• B23B31/16216 Primary

  using fluid-pressure means to actuate the gripping means · CPC title

• B23B31/001

  Protection against entering of chips or dust · CPC title

• B25J19/0075

  Means for protecting the manipulator from its environment or vice versa · CPC title

• Y10T279/1961

  Lever actuated · CPC title

• Y10T279/3493

  Protection means; e.g., cover, seal, overstress prevention, air blast · CPC title