Damping device, cooker, and device having damping structure

Patent metadata

Field	Value
Publication number	US-11903520-B2
Application number	US-201816758357-A
Country	US
Kind code	B2
Filing date	Sep 25, 2018
Priority date	Nov 28, 2017
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

The present invention discloses a damping device, a cooker and a device having a damping structure, wherein the damping device is arranged between a main body and a cover body, comprising a rotary member fixed on the cover body; a fixed member fixed on the main body, the fixed member being a hollow body having openings at two ends, the rotary member being nested in the hollow body, one of the rotary member and an inner side wall of the hollow body being provided with a friction member, the other one being provided with an elastic piece; during the process of opening the cover body, the elastic piece is slidably fitted with the friction member and generates varying frictional resistance during sliding.

First claim

What is claimed is:

1. A device, comprising a damping structure, and a first body and a second body rotatably connected by means of a rotary shaft and provided with a torsion spring therebetween;
the damping structure comprises an outer casing and an inner core nested in the outer casing, the outer casing comprising a fixed member and a supporting member arranged on the outer periphery of the fixed member, an inner wall of the fixed member of the outer casing comprises an elastic piece, an outer wall of the inner core comprises a protrusion, the elastic piece comprises an arc shape and protrudes in a direction away from the inner wall of the outer casing, a first end of the elastic piece is fixedly connected to the inner wall of the outer casing, and a second end of the elastic piece is arranged in a suspended manner and the elastic piece is a cantilever structure extending from the first end to the second end, wherein the elastic piece is arranged on the inner wall such that the protrusion is configured to be brought into contact with the elastic piece to generate a varying frictional resistance during movement of the inner core, thus applying an extrusion force onto the elastic piece with the movement of the inner core to elastically deform the elastic piece;
the first body is fixed with the outer casing or the inner core, the second body being rotatable relative to the outer casing by driving the inner core with the rotary shaft, the elastic piece has an elasticity gradually changing during a process of fitting the protrusion with the elastic piece to enable smooth transition, and the frictional resistance increases gradually during the process of opening a cover body;
a limiting portion for limiting the rotation of the inner core is formed on the elastic piece and disposed at a position near a joint between the elastic piece and the fixed member, such that the inner core cannot continue moving when moving to a position where the inner core comes into contact with the protrusion, hence limiting the movement of the inner core; the limiting portion comprises a protruding structure formed on a contact surface of the elastic piece and the inner core; the protrusion is not in contact with the elastic piece when the inner core is in an initial position, and the protrusion comes into contact with the elastic piece when the inner core is in rotation and movement; when the protrusion is in contact with the limiting portion on the elastic piece, the inner core stops moving;
during at least part of the opening process of the second body relative to the first body, the protrusion extrudes the elastic piece and rotates in a direction from the second end of the elastic piece to the first end of the elastic piece; and
the protrusion does not reach the first end of the elastic piece when the second body is completely opened relative to the first body.

2. The device according to claim 1 , wherein the outer casing comprises a casing main body that has an open end and is hollow, and an end cap that is arranged at the open end of the casing main body, a positioning stud being arranged at least at one of the bottom surface of the casing main body and the inner wall surface of the end cap, and the inner core being sleeved on the positioning stud after installation.

3. The device according to claim 2 , wherein the inner core is provided with first through-holes along its height direction, and second through-holes are disposed in two ends of the outer casing respectively in positions corresponding to the first through-holes, the first through-holes and the second through-holes serving for passage of the rotary shaft, and the inner core and the rotary shaft being not able to rotate relatively.

4. The device according to claim 3 , wherein the supporting member comprises a first cantilever extending toward a first direction from and tangible to the outer peripheral wall of the fixed member the outer casing provides a stress point for itself by using the first cantilever of the supporting member to bring the outer casing into contact with the second body of the device, thereby simplifying a structure of an existing damping device and occupying smaller space by the damping device.

Assignees

• Gree Electric Appliances Wuhan Co Ltd
• Gree Electric Appliances Inc Zhuhai

Inventors

• Zuo Shuangquan
• Chen Qun
• Lin Kanggui
• Xiao Biao
• Sun Zhichen

Classifications

• A47J36/12 Primary

  Devices for holding lids in open position on the container · CPC title

• A47J27/08

  Pressure-cookers; Lids or locking devices specially adapted therefor · CPC title

• A47J36/10

  Lid-locking devices · CPC title

• F16F1/38

  with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin {, i.e. bushing-type (hydraulically-damped bushes F16F13/14; suppression of vibrations in rotating systems by making use of elastomeric spring members between rotating elements, driveline torque being transmitted therebetween F16F15/126, by making use of a dynamic damping mass attached to a rotating element by means of elastomeric springs F16F15/14; pivots per se F16C11/00; elastic or yielding bearings or bearing supports F16C27/00; parts of sliding-contact bearings, e.g. bushes F16C33/04)} · CPC title

• A47J27/002

  Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels · CPC title