Electrical appliance device containing a knob

Patent metadata

Field	Value
Publication number	US-11291131-B2
Application number	US-202016773267-A
Country	US
Kind code	B2
Filing date	Jan 27, 2020
Priority date	Feb 2, 2019
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

An electrical appliance device contains a knob which has a knob front assembly with a front cover assembly, a knob bracket, and a display module assembly disposed between the front cover assembly and the knob bracket, and a knob rear assembly including a circuit board and a hollow rotary encoder. The rotary encoder is mounted on the circuit board. The electrical appliance device further has a panel with an opening. The knob front assembly at least partially passes through the opening such as to be mounted to the knob rear assembly.

First claim

The invention claimed is:

1. An electrical appliance device, comprising:
a knob containing:
a knob front assembly having a front cover assembly with a front window and a knob contact area, a knob bracket rotationally fixed to said knob contact area for rotating said knob bracket and said front cover assembly together, said front cover assembly and said knob bracket being fixedly assembled together, and a display module assembly disposed between said front cover assembly and said knob bracket;
a knob rear assembly including a circuit board and a hollow rotary encoder, said hollow rotary encoder is mounted on said circuit board, said hollow rotary encoder having an inner ring, and said display module assembly being fixed to said inner ring of said hollow rotary encoder or said circuit board, said inner ring of said hollow rotary encoder having a rotary encoder inner ring guide pin or guide groove formed therein;

said display module assembly correspondingly having a display module guide groove or guide pin formed therein;
said rotary encoder inner ring guide pin or guide groove being configured to be aligned and engaged with said display module guide groove or guide pin when said knob front assembly and said knob rear assembly are assembled;
said display module assembly, said front cover and said knob bracket defining a gap there-between; and
a panel having an opening formed therein, said panel having a back surface, said knob rear assembly being directly or indirectly fixed to said back surface of said panel, said knob front assembly at least partially passes through said opening such as to be mounted to said knob rear assembly.

2. The electrical appliance device according to claim 1 , wherein:
said knob bracket has an inner ring with a plurality of knob bracket guide grooves formed therein and evenly distributed on said inner ring;
said hollow rotary encoder has an outer ring with a plurality of rotary encoder outer ring guide grooves formed therein and evenly distributed on said outer ring; and
said knob bracket guide grooves and said rotary encoder outer ring guide grooves have an amount that is greater than or equal to three, and said knob bracket guide grooves and said rotary encoder outer ring guide grooves are capable of forming a tooth-like occluded relationship corresponding to each other.

3. The electrical appliance device according to claim 1 , further comprising a circuit board box for covering and protecting said knob rear assembly and is attached between said knob rear assembly and said panel.

4. The electrical appliance device according to claim 3 , wherein said circuit board box is a separate member or a member integrally formed on a back surface of said panel.

5. The electric appliance device according to claim 1 , wherein said knob further includes a fixing member for fixing said knob front assembly and said knob rear assembly together in a front-rear direction in a manner that said knob front assembly is capable of rotating freely, and said fixing member is an elastic clamp spring.

6. The electric appliance device according to claim 1 , further comprising:
a plurality of button transmission members disposed on said knob bracket; and
a plurality of mechanical buttons disposed on said circuit board, such that said knob front assembly is capable of actuating said plurality of button transmission members to cause said plurality of button transmission members to press said plurality of mechanical buttons in a one-to-one correspondence when said knob front assembly is pressed.

7. The electrical appliance device according to claim 1 , wherein said display module assembly includes a display screen, a display screen base, and a sensor disposed on said display screen or inside said display screen, said sensor includes one or both of a gesture control sensor and a proximity induction sensor.

8. The electrical appliance device according to claim 1 , wherein the electrical appliance device is a washing machine, a clothes dryer, a refrigerator, a dishwasher or a cook top.

Assignees

• Diehl Ako Stiftung Gmbh & Co

Inventors

• Cui Fengqun
• Li Zhongke

Classifications

• G05G1/10 Primary

  Details, e.g. of discs, knobs, wheels or handles {(G05G1/085 takes precedence)} · CPC title

• H05K5/069 Primary

  Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft · CPC title

• D06F34/28

  Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress · CPC title

• H01H19/06

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings · CPC title

• H01H19/005

  Electromechanical pulse generators · CPC title