Lifting device and storage cabinet

Patent metadata

Field	Value
Publication number	US-12245692-B2
Application number	US-202117925597-A
Country	US
Kind code	B2
Filing date	Dec 29, 2021
Priority date	Mar 16, 2021
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

A lifting device and a storage cabinet are provided. The lifting device comprises: a supporting member and a lifting assembly, which comprises a rotating wheel, a rotating driving member, a mounting member and a first-stage sliding rail, wherein a flexible cable is wound around the rotating wheel, is adapted to move along with rotation of the rotating wheel, and comprises flexible cable sections located on two sides of the rotating wheel; the rotating driving member is connected to the rotating wheel, and is adapted to drive the rotating wheel to rotate; the mounting member is provided with a guide rail, and a first fixed pulley is mounted on the mounting member.

First claim

What is claimed is:

1. A lifting device, comprising:
a support member and a lifting assembly, wherein
the lifting assembly comprises a swiveling wheel, a swiveling drive member, a mounting member and a first-stage sliding rail,
a flexible cable is provided to wrap around the swiveling wheel and moves with swivel of the swiveling wheel, and the flexible cable comprises flexible cable sections located on both sides of the swiveling wheel,
the swiveling drive member is connected to the swiveling wheel and is adapted to drive the swiveling wheel to swivel,
the mounting member is provided with a guide rail and a first fixed pulley,
the first-stage sliding rail is adapted to slide upwards and downwards relative to the guide rail, and the first-stage sliding rail is fixed to the support member,
the flexible cable is provided to wrap around the first fixed pulley, and the flexible cable sections of the flexible cable located on both sides of the swiveling wheel are connected to the first-stage sliding rail; and
the lifting assembly is provided with a guard plate, the first fixed pulley being protected by the guard plate when the lifting assembly is in a retracted state; wherein
one or more intermediate sliding rails are provided between the first-stage sliding rail and the guide rail, the first-stage sliding rail is mounted on the guide rail through the intermediate sliding rails, the intermediate sliding rails are provided with movable pulleys, and the flexible cable is provided to successively wrap around the first fixed pulley and the movable pulleys;
the intermediate sliding rails comprise: a second-stage sliding rail mounted on the guide rail and adapted to slide along the guide rail, the second-stage sliding rail is provided with a first movable pulley and a second movable pulley, and the first-stage sliding rail is mounted on the second-stage sliding rail and is adapted to move relative to the second-stage sliding rail; and
the flexible cable is provided to wrap around the first fixed pulley, the first movable pulley and the second movable pulley successively; the first movable pulley is located at a lower end of the second-stage sliding rail and the second movable pulley is located at an upper end of the second-stage sliding rail.

2. The lifting device of claim 1 , wherein the lifting assembly further comprises:
a slider, fixed to the first-stage sliding rail and adapted to move in a straight line along the second-stage sliding rail, wherein the slider is fixedly connected to the flexible cable sections located on both sides of the swiveling wheel.

3. The lifting device of claim 2 , wherein the slider is fixed to a lower part of the first-stage sliding rail.

4. The lifting device of claim 1 , wherein the flexible cable comprises:
a first flexible cable section, provided between the first fixed pulley and the first movable pulley,
a second flexible cable section, provided between the first movable pulley and the second movable pulley, and
a third flexible cable section, provided between the second movable pulley and the first-stage sliding rail,
wherein the first flexible cable section, the second flexible cable section and the third flexible cable section are arranged in parallel.

5. The lifting device of claim 1 , wherein the lifting assembly further comprises:
a second fixed pulley, provided on the mounting member, wherein
the mounting member comprises a mounting plate, wherein the first fixed pulley corresponding to a first end of the guide rail is provided on the mounting plate, the second fixed pulley corresponding to a second end of the guide rail is provided on the mounting plate, and the guide rail is fixed to the mounting plate.

6. The lifting device of claim 5 , further comprising:
a tension pulley, provided between the swiveling wheel and the second fixed pulley along an extending direction of the flexible cable.

7. The lifting device of claim 1 , wherein the swiveling wheel is provided on the mounting member.

8. The lifting device of claim 1 , wherein the swiveling wheel is a belt wheel, and the flexible cable is a belt matching with the belt wheel.

9. The lifting device of claim 1 , wherein the lifting assembly is provided in pairs on both sides of the support member.

10. The lifting device of claim 9 , wherein the lifting assembly comprises:
a first lifting assembly, provided on a first side of the support member, and comprising a first swiveling wheel,
a second lifting assembly, provided on a second side of the support member, and the second lifting assembly comprising a second swiveling wheel,
wherein the first swiveling wheel and the second swiveling wheel are both connected to the same swiveling drive member.

11. The lifting device of claim 1 , wherein the support member is a drawer body or a shelf.

12. A storage cabinet, comprising a box body and the lifting device of claim 1 , wherein the mounting member is provided in the box body.

13. The storage cabinet of claim 12 , wherein the storage cabinet is a refrigerator, a retail cabinet or a display cabinet.

Assignees

• Hefei Midea Refrigerator Co
• Hefei Hualing Co Ltd
• Midea Group Co Ltd

Inventors

• Xi Yongxue

Classifications

• B66D1/12

  incorporating electric motors · CPC title

• B66F7/28

  Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions · CPC title

• B66F7/02

  with platforms suspended from ropes, cables, or chains {or screws and movable along pillars} · CPC title

• A47B2088/421

  the bottom, cabinet side slide having a U-shape section opening upwards · CPC title

• F25D25/04

  by conveyors (in general B65G) · CPC title