SHOCK ABSORBING AND HEIGHT ADJUSTING STRUCTURE

• US 20200130775A1
• Filed: 10/30/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Active Grant

• Current Assignee: Kai-Han Cho
• Original Assignee: Kai-Han Cho
• Inventors: CHENG, Chih-Cheng
• Granted Patent: US 11,097,803 B2
• Time in Patent Office: Days
• CPC Class Codes: B62J 1/08 Frames for saddles; Connections between saddle frames and seat pillars; Seat pillars attaching seat pillars to cycle frames B62K19/36
• CPC Class Codes: B62K 2025/045 Suspensions with ride-height adjustment
• CPC Class Codes: B62K 25/04 for mounting axles resiliently on cycle frame or fork for sidecars, forecars or the like B62K27/06
• CPC Class Codes: B62K 25/08 for front wheel
• CPC Class Codes: F16F 9/0218 Mono-tubular units F16F9/0227, F16F9/0236, F16F9/0245 take precedence
• CPC Class Codes: F16F 9/061 Mono-tubular units
• CPC Class Codes: F16F 9/165 with two or more cylinders in line, i.e. in series connection F16F9/26 takes precedence
• CPC Class Codes: F16F 9/18 with a closed cylinder and a piston separating two or more working spaces therein
• CPC Class Codes: F16F 9/185 Bitubular units where compression of gas leads to a clear spring action F16F9/062
• CPC Class Codes: F16F 9/342 Throttling passages operating with metering pins F16F9/486 takes precedence
• CPC Class Codes: F16F 9/469 Valves incorporated in the piston F16F9/467 takes precedence

Abstract

A shock absorbing and height adjusting structure includes an inner tube, a lower piston assembly and an upper piston assembly. The inner tube includes an upper end, a lower end opposite to the upper end, and an inner space for accommodating a gas. The lower piston assembly includes a lower piston movably inserted into the inner tube, and a lower passage disposed at the lower piston. The upper piston assembly includes an upper piston movably inserted into the inner tube. When the lower passage is opened, the lower piston is moved relative to the lower end, and when the upper piston is forced, the upper piston has movement relative to the upper end toward the lower end to compress the gas.

Claims

1. A shock absorbing and height adjusting structure, comprising:

an inner tube, comprising;

an upper end;

a lower end opposite to the upper end; and

an inner space for accommodating a gas;

a lower piston assembly, comprising;

a lower piston movably inserted into the inner tube; and

a lower passage disposed at the lower piston; and

an upper piston assembly comprising an upper piston movably inserted into the inner tube;

wherein when the lower passage is opened, the lower piston is moved relative to the lower end; and

when the upper piston is forced, the upper piston is moved relative to the upper end toward the lower end so as to compress the gas.

2. The shock absorbing and height adjusting structure of claim 1, wherein the upper piston assembly further comprises:

a gas channel located inside the upper piston and communicated with the inner space;

wherein the gas is allowed to flow through the gas channel so as to adjust an amount of the gas inside the inner space.

3. The shock absorbing and height adjusting structure of claim 2, wherein the upper piston assembly further comprises:

a pin movably disposed in the gas channel.

4. The shock absorbing and height adjusting structure of claim 2, further comprising:

a nozzle communicated with the gas channel.

5. The shock absorbing and height adjusting structure of claim 1, wherein the inner tube further comprises:

an upper sealing cover covered on the upper end of the inner tube and having a bore configured to allow the upper piston to insert into the inner space; and

a lower sealing cover covered on the lower end of the inner tube and having a bore configured to allow the lower piston to insert into the inner space.

6. The shock absorbing and height adjusting structure of claim 5, wherein the inner tube further comprises:

a sleeve tube located inside the inner space and connected to the upper sealing cover;

wherein the upper piston is moved relative to the upper end within the sleeve tube.

7. The shock absorbing and height adjusting structure of claim 6, wherein the sleeve tube comprises:

a plurality of radial ribs connected to an inner wall of the inner tube.

8. The shock absorbing and height adjusting structure of claim 1, wherein the upper piston assembly further comprises:

an upper passage disposed at the upper piston;

wherein when the upper passage is opened and the lower passage is closed, the upper piston is moved relative to the upper end while a position of the lower piston relative to the lower end is fixed, and when the lower passage is opened and the upper passage is closed, the lower piston is moved relative to the lower end while a position of the upper piston relative to the upper end is fixed.

9. The shock absorbing and height adjusting structure of claim 8, further comprising:

a floating piston movably disposed in the inner tube and located between the upper piston and the lower piston.

10. The shock absorbing and height adjusting structure of claim 9, wherein an oil is accommodated between the floating piston and the upper end, the gas and another oil are accommodated between the floating piston and the lower end, and the gas is adjacent to the floating piston.

11. The shock absorbing and height adjusting structure of claim 9, further comprising:

a partition fixed in the inner tube and located between the lower piston and the floating piston;

wherein an oil is accommodated between the floating piston and the upper end, the gas is accommodated between the floating piston and the partition, and another gas and another oil are accommodated between the partition and the lower end.

12. The shock absorbing and height adjusting structure of claim 8, wherein an oil is accommodated in the inner tube, and the oil is adjacent to the lower end.

13. The shock absorbing and height adjusting structure of claim 8, further comprising:

a partition fixed in the inner tube and located between the lower piston and the upper piston;

wherein the gas is accommodated between the partition and the upper end, another gas and an oil are accommodated between the partition and the lower end, and the oil is adjacent to the lower end.

14. The shock absorbing and height adjusting structure of claim 8, further comprising:

an upper switch for opening or closing the upper passage; and

a lower switch for opening or closing the lower passage.

15. A shock absorbing and height adjusting structure, comprising:

an inner tube, comprising;

an upper tube body, comprising an upper end and a first connecting end opposite to the upper end; and

a lower tube body, comprising a lower end and a second connecting end opposite to the lower end, wherein the second connecting end is connected to the first connecting end;

an upper piston assembly, comprising;

an upper piston movably inserted into the upper tube body and adjacent to the upper end; and

an upper passage disposed at the upper piston; and

a lower piston assembly, comprising;

a lower piston movably inserted into the lower tube body and adjacent the lower end; and

a lower passage disposed at the lower piston;

wherein when the upper passage is opened and the lower passage is closed, the upper piston is moved relative to the upper end while a position of the lower piston relative to the lower end is fixed;

when the lower passage is opened and the upper passage is closed, the lower piston is moved relative to the lower end while a position of the upper piston relative to the upper end is fixed; and

when the upper piston is forced, the upper piston is moved relative to the upper end toward the lower end so as to compress a gas.

16. The shock absorbing and height adjusting structure of claim 15, further comprising:

an upper switch for opening or closing the upper passage; and

a lower switch for opening or closing the lower passage.