# US 11,113,909 B2 · Door handle and control method thereof

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- Number: US 11,113,909 B2
- Document ID: US11113909B2
- Status: Granted
- Kind: B2
- Application number: 16/695,798
- Filed: 2019-11-26
- Published: 2021-01-14
- Granted: 2021-09-07
- Earliest claimed: 2019-07-12
- Assignees: Beijing Xiaomi Mobile Software Co., Ltd.
- Applicants: Beijing Xiaomi Mobile Software Co., Ltd.
- Inventors: Peng Wang
- Web page: https://patentgrep.com/patent/US11113909B2

## CPC

- E05B 13/101: {for disconnecting the handle (E05B13/103, E05B13/105 take precedence)}
- G07C 9/00563: {using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns}
- E05B 1/0007: {Knobs (E05B1/0015, E05B1/0053, E05B1/0061, E05B1/0069 take precedence)}
- G06V 40/1306: {non-optical, e.g. ultrasonic or capacitive sensing}
- E05B 47/0661: {axially, i.e. with an axially engaging blocking element}
- E05B 47/068: {axially, i.e. with an axially disengaging coupling element}
- E05B 49/00: Electric permutation locks; Circuits therefor {; Mechanical aspects of electronic locks; Mechanical keys therefor (arrangements for sensing or reading record carriers G06K7/00; mechanisms including electronic locks actuated by nonmechanical keys such as passive and active electrical keys and other data carriers G07C9/00, G07F7/00; electronic switching H03K17/00)}
- E05B 2035/009: {Locks where a characteristic part of the user's body is used as a key}
- G06V 40/172: {Classification, e.g. identification}
- E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING

## Abstract

A door handle includes a human body detection sensor, a controller, a servo assembly, and an engaging assembly. The controller is electrically connected with the human body detection sensor and the servo assembly, and the engaging assembly is controlled by the servo assembly. The engaging assembly includes a first engaging state and a second engaging state. When the engaging assembly is in the first engaging state, the door handle is able to drive a lock body connecting shaft to rotate; and when the engaging assembly is in the second engaging state, the door handle is unable to drive the lock body connecting shaft to rotate.

## Claims

### Claim 1

A door handle, connected with a lock body connecting shaft of a safety door lock and configured to drive the lock body connecting shaft to rotate, the door handle comprising:
a human body detection sensor, a controller, a servo assembly, and an engaging assembly;
wherein the controller is electrically connected with the human body detection sensor and the servo assembly, and the engaging assembly is controlled by the servo assembly; and
the engaging assembly comprises a first engaging state and a second engaging state, wherein when the engaging assembly is in the second engaging state, the engaging assembly and a lock body are connected with each other, and the door handle is unable to be rotated together with the lock body connecting shaft; and when the engaging assembly is in the first engaging state, the engaging assembly and the lock body are disengaged from each other, and the door handle is able to be rotated together with the lock body connecting shaft.

### Claim 2 (depends on 1)

The door handle according to claim 1, wherein the controller is configured to:
instruct the servo assembly to control the engaging assembly to enter the first engaging state when a human body is detected by the human body detection sensor; and
instruct the servo assembly to control the engaging assembly to enter the second engaging state when no human body is detected by the human body detection sensor.

### Claim 3 (depends on 1)

The door handle according to claim 1, wherein the human body detection sensor comprises at least one of:
a human body heat release infrared sensor disposed on a handle housing of the door handle;
a finger vein sensor disposed on the handle housing of the door handle;
a fingerprint sensor disposed on the handle housing of the door handle;
a touch sensor disposed on the handle housing of the door handle;
a face detection sensor disposed outside the handle housing of the door handle; or
an iris detection sensor disposed outside the handle housing of the door handle.

### Claim 4 (depends on 1)

A control method of a door handle, wherein the method is performed by the controller in the door handle according to claim 1, the method comprising:
receiving sensor data of the human body detection sensor;
instructing the servo assembly to control the engaging assembly to enter the first engaging state when a human body is detected according to the sensor data; and
instructing the servo assembly to control the engaging assembly to enter the second engaging state when no human body is detected according to the sensor data.

### Claim 5 (depends on 4)

The method according to claim 4, wherein the body detection sensor comprises at least one of:
a human body heat release infrared sensor disposed on a handle housing of the door handle;
a finger vein sensor disposed on the handle housing of the door handle;
a fingerprint sensor disposed on the handle housing of the door handle;
a touch sensor disposed on the handle housing of the door handle;
a face detection sensor disposed outside the handle housing of the door handle; or
an iris detection sensor disposed outside the handle housing of the door handle.

### Claim 6 (depends on 1)

A door handle control device, for use in the controller of the door handle according to claim 1, the door handle control device comprising:
a processor; and
a memory storing instructions by the processor;
wherein the processor is configured to:
receive sensor data of the human body detection sensor;
instruct the servo assembly to control the engaging assembly to enter the first engaging state when a human body is detected according to the sensor data; and
instruct the servo assembly to control the engaging assembly to enter the second engaging state when no human body is detected according to the sensor data.

### Claim 7 (depends on 6)

The door handle control device according to claim 6, wherein the human body detection sensor comprises at least one of:
a human body heat release infrared sensor disposed on a handle housing of the door handle;
a finger vein sensor disposed on the handle housing of the door handle;
a fingerprint sensor disposed on the handle housing of the door handle;
a touch sensor disposed on the handle housing of the door handle;
a face detection sensor disposed outside the handle housing of the door handle; or
an iris detection sensor disposed outside the handle housing of the door handle.