# US 11,898,369 B2 · Door lock

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- Number: US 11,898,369 B2
- Document ID: US11898369B2
- Status: Granted
- Kind: B2
- Application number: 16/607,990
- Filed: 2018-06-15
- Published: 2021-04-15
- Granted: 2024-02-13
- Earliest claimed: 2017-06-19
- Assignees: Illinois Tool Works Inc.
- Applicants: Illinois Tool Works Inc.
- Inventors: Yang Wang
- Web page: https://patentgrep.com/patent/US11898369B2

## CPC

- E05B 41/00: Locks with visible indication as to whether the lock is locked or unlocked {(indicator lights E05B17/10)}
- E05C 3/24: in the form of a bifurcated member {(automatic catches with a bifurcated latch E05C19/024; locks with a bifurcated bolt E05B65/0046, E05B85/243)}
- D06F 37/28: Doors; Security means therefor
- E05B 83/12: for back doors of vans (E05B83/04, E05B83/08 take precedence)
- A47L 15/4259: {Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open}
- D06F 37/42: Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
- D06F 39/14: Doors or covers; Securing means therefor
- E05B 47/0004: {said core being linearly movable}
- E05B 2047/0067: {Monitoring}
- E05C 3/30: in the form of a hook {(hook-like fastenings E05C19/10; locks for sliding wings with pivoting bolts E05B65/0811, E05B65/0835)}
- E05C 19/022: {Released by pushing in the closing direction}
- E05Y 2201/474: Compression springs
- E05Y 2400/445: Switches
- E05Y 2900/304: for dishwashers
- E05Y 2900/312: for washing machines or laundry dryers
- 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)
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)
- 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

## Abstract

The present application provides a door lock, comprising a main sliding block, the main sliding block being able to move to and fro between a locked position and a released position along a first direction (length direction), and the main sliding block being able to lock the door lock when at the locked position, and the main sliding block being able to release the door lock when at the released position; and an indicating sliding block, the indicating sliding block being able to move to and fro between a closed position and an open position along the first direction (length direction) when the main sliding block moves to and fro between the locked position and the released position along the first direction (length direction), wherein the closed position and the open position of the indicating sliding block are used for indicating whether the door lock is in a locked state or in a released state. The door lock of the present application can make the output state of a door lock state indicating apparatus stable.

## Claims

### Claim 1

A door lock, comprising:
a main sliding block that is able to move to and fro between a locked position and a released position along a first direction, and the main sliding block being able to lock the door lock when at the locked position, and the main sliding block being able to release the door lock when at the released position; and
an indicating sliding block that directly engages the main sliding block and is able to move to and fro with respect to and independently of the main sliding block and between a closed position and an open position along the first direction when the main sliding block moves to and fro between the locked position and the released position along the first direction,
wherein the closed position and the open position of the indicating sliding block are used for indicating whether the door lock is in a locked state or in a released state.

### Claim 2 (depends on 1)

The door lock of claim 1, further comprising:
an indicating apparatus that is able to output an indicating signal according to the closed position and the open position of the indicating sliding block, and the indicating signal being used for indicating whether the door lock is in the locked state or in the released state.

### Claim 3 (depends on 2)

The door lock of claim 2, wherein:
the indicating sliding block is able to move to and fro between the closed position and the open position along the first direction; the indicating sliding block is able to move from the open position to the closed position when the main sliding block moves from the released position to the locked position; and the indicating sliding block is able to move from the closed position to the open position when the main sliding block moves from the locked position to the released position.

### Claim 4 (depends on 3)

The door lock of claim 3, further comprising:
an indicating latch that is able to accordingly move to and fro along a second direction, that is orthogonal with respect to the first direction, when the indicating sliding block moves to and fro along the first direction,
wherein the indicating latch is used for starting the indicating apparatus so that the indicating apparatus outputs the indicating signal.

### Claim 5 (depends on 1)

The door lock of claim 1, wherein:
the indicating sliding block is arranged at one side of the main sliding block, and the main sliding block brings the indicating sliding block to move from the closed position to the open position.

### Claim 6

A door lock, comprising:
a door hook;
a cam that selectively engages the door hook;
a main sliding block, the main sliding block being able to move to and fro between a locked position and a released position along a first direction, and the main sliding block being able to lock the door lock when at the locked position to prevent removal of the door hook from the cam, and the main sliding block being able to release the door lock when at the released position to permit removal of the door hook from the cam;
an indicating sliding block that is able to move to and fro with respect to the main sliding block and along the first direction when the main sliding block moves to and fro between the locked position and the released position along the first direction, wherein the indicating sliding block includes a rotation bevel that engages the main sliding block to rotate the indicating sliding block and define an included angle between the sliding block and the main sliding block when the main sliding block moves from the released position to the locked position;
an indicating latch that is able to move to and fro on an upper surface of the indicating sliding block, and the indicating latch being able to accordingly move to and fro along a second direction that is orthogonal with respect to the first direction when the indicating sliding block moves to and fro along the first direction; and
a switching apparatus, with the indicating latch being able to close or disconnect the switching apparatus.

### Claim 7

A door lock, comprising:
a door hook;
a cam that selectively engages the door hook;
a main sliding block, the main sliding block being able to move to and fro between a locked position and a released position along a first direction, and the main sliding block being able to lock the door lock when at the locked position to prevent removal of the door hook from the cam, and the main sliding block being able to release the door lock when at the released position to permit removal of the door hook from the cam;
an indicating sliding block that is able to move to and fro with respect to the main sliding block and along the first direction when the main sliding block moves to and fro between the locked position and the released position along the first direction;
an indicating latch that is able to move to and fro on an upper surface of the indicating sliding block, and the indicating latch being able to accordingly move to and fro along a second direction that is orthogonal with respect to the first direction when the indicating sliding block moves to and fro along the first direction; and
a switching apparatus, with the indicting latch being able to close or disconnect the switching apparatus;
wherein:
the indicating sliding block is arranged at one side of the main sliding block, and the main sliding block brings the indicating sliding block to move from a closed position to an open position.

### Claim 8 (depends on 7)

The door lock of claim 7, wherein:
a push arm is provided at one side of the main sliding block, and the push arm is able to bring the indicating sliding block to move from the closed position to the open position.

### Claim 9 (depends on 8)

The door lock of claim 8, wherein:
the door lock further comprises a biasing apparatus, and the biasing apparatus pushes the indicating sliding block to move from the open position to the closed position.

### Claim 10 (depends on 9)

The door lock of claim 9, wherein:
the biasing apparatus is a spring.

### Claim 11

A door lock, comprising:
a main sliding block, the main sliding block being able to move to and fro between a locked position and a released position along a first direction, and the main sliding block being able to lock the door lock when at the locked position, and the main sliding block being able to release the door lock when at the released position;
an indicating sliding block that is able to move to and fro along the first direction when the main sliding block moves to and fro between the locked position and the released position along the first direction;
an indicating latch that is able to move to and fro on an upper surface of the indicating sliding block, and the indicating latch being able to accordingly move to and fro along a second direction that is orthogonal with respect to the first direction when the indicating sliding block moves to and fro along the first direction; and
a switching apparatus, with the indicating latch being able to close or disconnect the switching apparatus
wherein:
the indicating sliding block is arranged at one side of the main sliding block, and the main sliding block brings the indicating sliding block to move from a closed position to an open position;
the indicating sliding block comprises a stepped part, and the stepped part comprises an upper step and a lower step that are arranged by way of connection;
a bearing surface and a recess are provided on the upper step, the bearing surface is arranged at a distal end of the upper step, the bearing surface is higher than the recess, a distal end of the recess is connected to the bearing surface, and an indicating sliding block restoration part is provided at an outer side face at a proximal end of the recess;
an indicating sliding block release part is provided on an upper surface at a distal end of the lower step, a blocking surface is provided at a proximal end of the lower step, and the blocking surface is used for blocking the movement of the main sliding block when the main sliding block moves from the locked position to the released position; and
an indicating sliding block protrusion locking claw extends out of an outer side face at the distal end of the lower step.

### Claim 12 (depends on 11)

The door lock of claim 11, wherein:
the indicating sliding block restoration part comprises a restoration bevel, and the restoration bevel tilts inward in a direction from the distal end of the upper step to the proximal end; and
the indicating sliding block release part comprises a rotation bevel, and the rotation bevel tilts outward in a direction from the proximal end of the lower step to the distal end.

### Claim 13 (depends on 11)

The door lock of claim 11, further comprising:
a door lock box comprising an indicating sliding block sliding chute, and the indicating sliding block sliding chute comprising an inside wall and an outside wall; wherein
a notch is provided at a distal end of the inside wall and used for accommodating the indicating sliding block protrusion locking claw, a blocking surface is provided at a distal end of the notch, and the blocking surface is used for blocking the movement of the indicating sliding block when the main sliding block moves from the released position to the locked position along the first direction; and
an indicating sliding block recovery bevel is provided at a proximal end of the outside wall and used for cooperating with the indicating sliding block restoration part to restore the indicating sliding block.

### Claim 14

A door lock, comprising:
a main sliding block configured to move to and fro between a locked position and a released position along a first direction, wherein the main sliding block locks the door lock when at the locked position and releases the door lock when at the released position; and
an indicating sliding block that engages and is supported by a face-to-face surface engagement with and is movable independently with respect to the main sliding block, wherein:
movement of the main sliding block translates into movement of the indicating sliding block;
the indicating sliding block is able to move to and fro between a closed position and an open position along the first direction when the main sliding block moves to and fro between the locked position and the released position along the first direction; and
the closed position and the open position of the indicating sliding block are used for indicating whether the door lock is in a locked state or in a released state.