US 11,719,303 B2
Cylinder with switchable system and shock absorber having the same
Chih-Hsien Liao, Taichung (TW)
Filed by Chih-Hsien Liao, Taichung (TW)
Filed on Nov. 23, 2021, as Appl. No. 17/533,979.
Prior Publication US 2023/0160449 A1, May 25, 2023
Int. Cl. F16F 9/06 (2006.01); F16F 9/32 (2006.01); F16F 9/49 (2006.01); F16F 9/56 (2006.01); B60G 15/06 (2006.01)
CPC F16F 9/063 (2013.01) [F16F 9/3235 (2013.01); F16F 9/49 (2013.01); F16F 9/56 (2013.01); B60G 15/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A cylinder adapted for a shock absorber comprising:
a cylinder body having an inner surface that defines a disposing space;
a piston movably disposed in said disposing space, and dividing said disposing space into a liquid space that is adapted for a damping liquid to flow therein, and an air space that is adapted for a gas to be filled in;
a cover mounted to said cylinder body such that said air space of said cylinder body is enclosed; and
an electronic control device disposed in said air space of said cylinder body, dividing said air space into a first chamber space and a second chamber space, and having
a chamber communicating opening through which said first chamber space and said second chamber space fluidly communicate with each other,
an electromagnetic unit that generates a magnetic field when energized, and
a rod unit that includes a blocking member and that is controllable by said electromagnetic unit to convert between a blocking state, in which said blocking member blocks said chamber communicating opening to prevent fluid communication between said first chamber space and said second chamber space, and an unblocking state, in which said blocking member unblocks said chamber communicating opening to permit fluid communication between said first chamber space and said second chamber space;
wherein said rod unit of said electronic control device further includes a moving rod having two opposite ends, and an elastic member;
wherein said blocking member of said rod unit is mounted to one of said ends of said moving rod;
wherein said elastic member is resiliently disposed between said electromagnetic unit and said moving rod; and
wherein when said rod unit is in the blocking state, said blocking member is at a blocking position and said elastic member is compressed and stores a potential energy for moving said blocking member to an unblocking position and for converting said rod unit to the unblocking state.