Cylinder

Patent metadata

Field	Value
Publication number	US-9732740-B2
Application number	US-201514848039-A
Country	US
Kind code	B2
Filing date	Sep 8, 2015
Priority date	May 29, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A cylinder includes a curved cylinder body, a first support member, and a piston assembly. The curved cylinder body defines a gas chamber passing through opposite ends. The first support member includes a support housing slidably mounted on the outer circumferential surface of the cylinder body and a first permanent magnet securely mounted in the support housing. The piston assembly received in the gas chamber includes a first piston member and a second piston member rotatably coupled to the first piston member. The first and second piston members respectively have a second permanent magnet which is arranged to be attracted to the first permanent magnet. When the piston assembly moves along the curved cylinder body from the first end to the second end in the gas chamber, the first support member moves with the piston assembly on the outer circumferential surface of the curved cylinder body.

First claim

What is claimed is:

1. A cylinder comprising:
a curved cylinder body having a first end and a second end opposite to the first end and defining a gas chamber passing through the first end and the second end;
a first support member comprising:
a support housing slidably mounted on an outer surface of the cylinder body, and
a first permanent magnet securely mounted in the support housing; and

a piston assembly received in the gas chamber and comprising:
a first piston member comprising:
a first connecting rod,
a second permanent magnet sleeved on the first connecting rod, and
a first piston sleeved on the first connecting rod and positioned adjacent to the second permanent magnet of the first piston member, and

a second piston member comprising:
a second connecting rod rotatably coupled to the first connecting rod,
a second permanent magnet sleeved on the second connecting rod, and

a second piston sleeved on the second connecting rod and positioned adjacent to the second permanent magnet of the second piston member,
wherein the outer surfaces of the first and second pistons touch the inner surface of the cylinder body, and the second permanent magnets of the first and second piston members are arranged to be attracted to the first permanent magnet;

wherein when the piston assembly moves along the curved cylinder body from the first end to the second end in the gas chamber, the first support member moves with the piston assembly on the outer surface of the curved cylinder body by utilizing the attraction force between the first permanent magnet and the second permanent magnets.

2. The cylinder of claim 1 , wherein a grooved connecting portion is formed on an end of the second connecting rod, and a spherical connecting portion is formed on an end of the first connecting rod and rotatably received in the grooved connecting portion.

3. The cylinder of claim 1 , wherein the curved cylinder body defines two sliding rails on opposite outer side surfaces thereof, and the first support member further comprises two guiding wheels rotatably mounted on the support housing and respectively slidably received in the sliding rails.

4. The cylinder of claim 1 , wherein the first support member further comprises two support wheels rotatably mounted on the support housing, and the support wheels are movably positioned on the outer side surface of the curved cylinder body to support the support housing.

5. The cylinder of claim 1 , wherein the first piston member further comprises a guiding member securely mounted on the end of the first connecting rod away from the second piston member, and the second piston member further comprises a guiding member securely mounted on the end of the second connecting rod away from the first piston member, wherein the outer surfaces of the guiding members of the first and second piston members touch the inner surface of the cylinder body.

6. The cylinder of claim 1 , further comprising two end covers covering the first and second ends of the curved cylinder body, wherein each end cover comprises a cover plate, a gas connecting head mounted on the cover plate, and a gas channel defined in the cover plate to allow the gas connecting head to communicate with the gas chamber.

7. The cylinder of claim 6 , wherein each cover plate comprises a cover portion to cover the first or second ends of the cylinder body and an inserting portion protruding from a side of each cover portion and received in the gas chamber, and the outer surface of each inserting portion touches the inner surface of the cylinder body; the gas connecting head is mounted on the cover portion, and the gas channel passes through the cover portion and the inserting portion.

8. The cylinder of claim 7 , wherein each end cover further comprises a buffer ring mounted on the end of the inserting portion away from the cover portion, and the buffer ring is configured to act as a cushion to a collision between the piston assembly and the inserting portion.

9. The cylinder of claim 7 , wherein each end cover further comprises a buffer post mounted on the cover portion and located outside of the curved cylinder body, and the buffer post is configured to prevent the first support member from sliding.

10. The cylinder of claim 1 , wherein the cylinder body comprises a first portion defining a first chamber groove and a second portion matching with the first portion and defining a second chamber groove, and the first chamber groove and the second chamber groove cooperatively define the gas chamber.

11. A cylinder comprising:
a curved cylinder body having a first end and a second end opposite to the first end and defining a gas chamber passing through the first end and the second end;
a first support member comprising:
a support housing slidably mounted on an outer surface of the cylinder body, and
a first permanent magnet securely mounted in the support housing;

a second support member comprising:
a support housing slidably mounted on the outer surface of the cylinder body, positioned opposite to the support housing of the first support member, and coupled to the support housing of the first support member,
a first permanent magnet securely mounted in the support housing of the second support member; and

a piston assembly received in the gas chamber and comprising:
a first piston member having a second permanent magnet, and
a second piston member rotatably coupled to the first piston member and having a second permanent magnet,
wherein the second permanent magnets of the first and second piston members are arranged to be attracted to the first permanents magnets;

wherein when the piston assembly moves along the curved cylinder body from the first end to the second end in the gas chamber, the first support member and the second support member move with the piston assembly on the outer circumferential surface of the curved cylinder body by utilizing the attraction force between the first permanent magnets and the second permanent magnets.

12. The cylinder of claim 11 , wherein the second piston member comprises a second connecting rod which has a grooved connecting portion, the first piston member comprises a first connecting rod having a spherical connecting portion and rotatably received in the grooved connecting portion.

13. The cylinder of claim 12 , wherein the first piston member further comprises a guiding member securely mounted on the end of the first connecting rod away from the second piston member, and the second piston member further comprises a guiding member securely mounted on the end of the second connecting rod away from the first piston member, wherein the outer surfaces of the guiding members of the first and second piston members touch the inner surface of the cylinder body.

14. The cylinder of claim 11 , wherein the curved cylinder body defines two sliding rails on opposite outer side surfaces, and the first support member further comprises two guiding wheels rotatably mounted on the support housings of the first and second support members and respectively slidably received in the sliding rails.

15. The cylinder of claim 11 , wherein each of the first and second support members further comprise two support wheels rotatably mounted on the corresponding support housing, and the support wheels are movably positioned on the outer side surface of the curved cylinder body to support the corresponding support housing.

16. The cylinder of claim 11 , further comprising two end covers covering the first and second end of the curved cylinder body, wherein each end cover comprises a cover plate,

Assignees

• Fu Tai Hua Ind (Shenzhen) Co Ltd
• Hon Hai Prec Ind Co Ltd

Inventors

• Liu Yu-Ching
• Yang wei-da
• Zhang li-quan
• Cai Qing
• Peng zhi-jun
• Li Li

Classifications

• F15B15/086

  with magnetic coupling · CPC title

• F04B39/12

  Casings; Cylinders; Cylinder heads; Fluid connections · CPC title

• F16J1/24

  designed to give the piston some rotary movement about its axis · CPC title

• F16J1/005

  obtained by assembling several pieces · CPC title

• F04B35/04 Primary

  the means being electric · CPC title