# US 2017/0280890 A1 · Hook-on chair

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2017/0280890 A1
- Document ID: US20170280890A1
- Status: Published application
- Kind: A1
- Application number: 15/470,354
- Filed: 2017-03-27
- Published: 2017-10-05
- Earliest claimed: 2016-03-30
- Assignees: Wei Guan Hardware (Shenzhen) Co., Ltd.
- Applicants: Wei Guan Hardware (Shenzhen) Co., Ltd.
- Inventors: Chuan Kai HSU
- Web page: https://patentgrep.com/patent/US20170280890A1

## CPC

- A47D 1/106: {attachable to tables}
- A47D: FURNITURE SPECIALLY ADAPTED FOR CHILDREN (school benches or desks A47B39/00, A47B41/00)

## Abstract

A children's dining chair, such as for example a hook-on children's dining chair for hooking onto or otherwise attaching to a table or other support, with an improved structure and better performance. In example embodiments, the present invention further provides a hook-on chair with an enhanced clamping force.

## Claims

### Claim 1

A hook-on chair, comprising:
a frame, comprising a lever, a sleeve and a bottom bar, wherein said lever is U-shaped, and can fit with a chair for babies and young children, both ends of said lever are fitted with a sleeve each, a nonslip cover is provided at the front end of each sleeve, and a bottom bar extends in the rear part of each sleeve, and the other end of said bottom bar is connected with the main body of a pressing member;
wherein said pressing member comprises a main body an engaging block, a lifting block, a rotating plate and a sliding bush, said main body is fixed at one end of said bottom bar, a through hole is provided in the front part of said main body, the rod body of a moving rod is inserted in said through hole, an engaging block is provided inside said main body, several engaging teeth are provided on the side of said engaging block, said engaging teeth are engaged with the button teeth of a turning handle, a lifting block is provided above said engaging block, a lifting spring is provided between said lifting block and said main body, one end of said lifting block is pivoted on a rotating plate, several plate teeth are provided on one side of said rotating plate, said plate teeth is engaged with rod teeth, a leaf spring is provided between said rotating plate and said lifting block, so that said rotating plate can be pushed toward said moving rod, a long slot is opened on said rotating plate, the hook end of a sliding bush is embedded in said long slot and extends from one side of a sliding bush, and said sliding bush is fitted over said bottom bar to drive said rotating plate to rotate;
said moving rod comprises a rod body and a pressing block, said rod body runs through said through hole, several rod teeth are provided on one side of said rod body, a pressing block is formed on the top of said rod body, and a nonslip pad is provided on the top of said pressing block;
said turning handle comprises a handle, a button and a pushing end, said handle is pivoted inside said main body, a button is pivoted inside said handle, said button has several button teeth, which are engaged with said engaging teeth, a button spring is provided between said button and said handle, a pushing end is formed on the top of said handle, and said pushing end can be pressed against said lifting block.

### Claim 2 (depends on 1)

A hook-on chair according to claim 1, whereas said engaging teeth and plate teeth of said pressing member, said rod teeth of said moving rod, and said button teeth of said turning handle are skewed teeth.

### Claim 3 (depends on 1)

A hook-on chair according to claim 1, wherein a main body slot is provided in the inner wall of said main body of said pressing member, a lifting groove is provided on the top of said lifting block and corresponds to said main body slot, and said lifting spring is provided between said main body slot and said lifting groove.

### Claim 4 (depends on 1)

A hook-on chair according to claim 1, wherein a plate tenon is provided on one side of said rotating plate of said pressing member, a lifting side groove is provided on one end of said lifting block and corresponds to said plate tenon, and said leaf spring is provided between said plate tenon and said lifting side groove.

### Claim 5 (depends on 1)

A hook-on chair according to claim 1, wherein a handle tenon is provided on one side of the inner wall of said turning handle, a button notch is provided on one side of said button and corresponds to said handle tenon, and said button spring is provided between said button notch and said handle tenon.