# US 2014/0150505 A1 · Lock apparatus for opening/closing member

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- Number: US 2014/0150505 A1
- Document ID: US20140150505A1
- Status: Published application
- Kind: A1
- Application number: 14/234,618
- Filed: 2012-07-05
- Published: 2014-06-05
- Earliest claimed: 2011-08-02
- Assignees: Piolax, Inc.
- Inventors: Toshihiro Shimizu
- Web page: https://patentgrep.com/patent/US20140150505A1

## CPC

- E05B 15/00: Other details of locks; Parts for engagement by bolts of fastening devices
- E05B 9/04: {Casings} of cylinder locks {(details specific for pin or ball tumbler cylinder locks E05B27/0014; details specific for plate tumbler cylinder locks E05B29/00)}
- E05B 13/10: formed by a lock arranged in the handle
- E05B 83/30: for glove compartments
- E05B 85/14: Handles pivoted about an axis parallel to the wing
- E05C 9/043: {with crank pins and connecting rods}
- E05D 1/04: with guide members shaped as circular arcs
- Y10T 70/7486: Single key
- 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)
- E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A lock apparatus includes a housing, a rotor having a bearing portion, rods, a return spring, and a knob having a holding portion and a presser element. The presser element is formed so as to overlap the bearing portion with a predetermined overlap width. When the rods are kept engaged with the engagement portions, a rotating center of the knob is positioned closer to the holding portion than a contact point between the bearing portion and the presser element.

## Claims

### Claim 1

A lock apparatus for an opening/closing member which is installed in an opening portion in an installation base member so as to be opened and closed, including:
a housing which is attached to one of the installation base member and the opening/closing member;
a rotor which is attached rotatably to the housing;
a rod which is attached to the rotor so as to slide in an interlocked fashion with the rotor and so as to be engaged with or disengaged from an engagement portion provided on the other one of the installation base member and the opening/closing member;
a bearing portion which is provided on the rotor;
a return spring which rotationally biases the rotor directly or via the rod so that the rod is engaged with the engagement portion;
a knob which is attached rotatably to the housing and which has a holding portion at one end thereof; and
a presser element which is formed at the other end of the knob so as to overlap the bearing portion with a predetermined overlap width and which presses on the bearing portion upon pulling of the knob so as to rotate the rotor against a biasing force of the return spring to thereby pull the rod out of the engagement portion,
wherein, with the rod kept engaged with the engagement portion, a rotating center of the knob is positioned closer to the holding portion of the knob than a contact point between the bearing portion and the presser element,
wherein the knob includes a front wall and a pair of side walls which project from both sides of the front wall toward the housing,
wherein an arc-shaped groove is formed in the pair of side walls, a center of the arc-shaped groove being provided close to a front surface of the front wall,
wherein an arc-shaped projection or plural pin-shaped projections are formed on the housing so as to be inserted into the arc-shaped groove, and
wherein the knob rotates about the center of the arc-shaped groove as a rotating center.

### Claim 2 (depends on 1)

The lock apparatus of claim 1,
wherein, upon pulling of the knob, the knob stops rotating and the rod is pulled out of the engagement portion within such a rotating range that the overlap width of the presser element with respect to the bearing portion does not become smaller than an overlap width in an initial state where the rod engages with the engagement portion.

### Claim 3 (depends on 2)

The lock apparatus of claim 2,
wherein, upon pulling of the knob, the knob stops rotating and the rod is pulled out of the engagement portion within such a rotating range that the contact point between the bearing portion and the presser element does not go beyond a line which passes through the rotating center of the knob and which is parallel to a rotational shaft of the rotor.

### Claim 4

(canceled)

### Claim 5 (depends on 1)

The lock apparatus of claim 1,
wherein a key cylinder is mounted rotatably in the knob,
wherein a projection projects from a distal end of the key cylinder while being offset from a rotating center of the key cylinder,
wherein, when the key cylinder is in a predetermined rotational position, the projection engages with a lock portion of the housing so as to restrict pulling of the knob, and
wherein the lock portion of the housing is disposed adjacent to the rotor.