# US 7,407,200 B2 · Cover opening and closing device

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- Number: US 7,407,200 B2
- Document ID: US7407200B2
- Status: Granted
- Kind: B2
- Application number: 11/116,306
- Filed: 2005-04-28
- Published: 2005-11-17
- Granted: 2008-08-05
- Earliest claimed: 2004-05-11
- Assignees: Nifco Inc.
- Inventors: Takahide Ichimaru
- Web page: https://patentgrep.com/patent/US7407200B2

## CPC

- E05F 17/004: {for wings which abut when closed}
- E05B 77/42: Means for damping the movement of lock parts, e.g. slowing down the return movement of a handle (E05B77/38 takes precedence)
- E05B 83/30: for glove compartments
- E05C 17/02: by mechanical means (E05C17/60 takes precedence)
- E05F 11/00: Man-operated mechanisms for operating wings, including those which also operate the fastening (connecting mechanisms for a plurality of wings E05F17/00)
- E05B 77/06: by means of inertial forces
- E05C 7/04: for wings which abut when closed {(pillarless vehicle doors E05B83/38)}
- E05C 19/022: {Released by pushing in the closing direction}
- E05F 11/54: for doors
- E05Y 2201/21: Brakes
- E05Y 2201/254: Fluid or viscous friction
- E05Y 2201/266: rotary
- Y10S 292/04: Automatic release latches
- Y10S 292/37: Push button operators
- Y10T 292/1043: Swinging
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05C: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS (latching means for sideboard or tailgate structures for vehicles B62D, {B62D33/02}; fastening devices for constructional or engineering elements E04, F16B; locks, fastening devices structurally or operatively combined or having significant cooperation with locks E05B; means for operating or controlling wing fasteners in conjunction with mechanisms for moving the wing E05F)
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A cover opening and closing device switches a cover body to rotate between a closed position and an open position. The cover opening and closing device includes a single operation button for switching the cover body between the closed position and the open position, a forcing device for forcing the cover body at least toward the closed position from a near closed position when the cover body is closed, and a switching device for releasing the cover body in the open position and allowing the cover body to rotate toward the closed position when the operation button is pushed.

## Claims

### Claim 1

A cover opening and closing device for switching a cover body between a closed position and an open position, comprising:
one operation button to be operated when the cover body is switched between the closed position and the open position,
a forcing device for forcing the cover body toward the closed position at least from a position close to the closed position when the cover body is closed, and
a switching device for releasing the cover body at the open position so that the cover body rotates toward the closed position when the operation button is operated, said switching device including a cam rotating when the operation button is operated, a gear linked to the cam and engaging a gear part provided on the cover body, and an engaging device for holding the cover body at the open position and releasing the cover body when the operation button is operated,
wherein said engaging device includes a sliding body disposed between the operation button and the cam and forming a cam groove, a trace pin for tracing the cam groove, and a lock member linked to the sliding body for moving in a direction intersecting with the sliding body.

### Claim 2

A cover opening and closing device for switching a cover body between a closed position and an open position, comprising:
one operation button to be operated when the cover body is switched between the closed position and the open position,
a forcing device for forcing the cover body toward the closed position at least from a position close to the closed position when the cover body is closed, and
a switching device for releasing the cover body at the open position so that the cover body rotates toward the closed position when the operation button is operated, said switching device including a moving body sliding in a direction intersecting with a direction that the operation button moves when the operation button is operated, a push member swingably supported on the moving body, a gear linked to the push member and engaging a gear part provided on the cover body, and an engaging device for holding the cover body at the open position and releasing the cover body when the operation button is operated,
wherein said engaging device includes a cam groove provided in a fixed plate fixed to a main body, and a trace pin provided on the push member for tracing the cam groove.

### Claim 3 (depends on 2)

A cover opening and closing device according to claim 2, wherein said forcing device reverses a forcing direction when the cover body is situated at a middle point between the closed position and the open position.