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US 11,719,303 B2Granted
Cylinder with switchable system and shock absorber having the same
OwnerChih-Hsien Liaoinventor
Life of this patent
Estimating the term…
Abstract
A shock absorber includes a cylinder that includes a cylinder body defining a disposing space, a piston movably disposed in the disposing space and dividing the disposing space into a liquid space and an air space, and an electronic control device disposed in the air space and dividing the air space into a first chamber space and a second chamber space. The electronic control device has an electromagnetic unit and a rod unit that includes a blocking member, and that is controllable by the electromagnetic unit to convert between a blocking state and an unblocking state, in which the blocking member respectively prevents and permits fluid communication between the first chamber space and the second chamber space.
Claims11
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.
10 more elements
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 electronic control device includes a device housing disposed in said air space of said cylinder body, airtightly connected to said inner surface of said cylinder body, and having an accommodating groove that opens toward said cover;
- wherein said cover is connected to said device housing;
- wherein said electromagnetic unit and said rod unit of said electronic control device are disposed at said device housing;
- wherein said electromagnetic unit includes a coil seat disposed in said accommodating groove, and a coil surrounding said coil seat, capable of being energized by electricity, and having two coil ends;
- wherein said coil seat has a seat indented part formed at one end of said coil seat and cooperating with said device housing to define a coil opening through which said coil ends extend away from said accommodating groove to extend through said cover;
- wherein said electromagnetic unit of said electronic control device further includes a mounting base having
- a base part that is airtightly disposed in said accommodating groove of said device housing,
- a rod part that extends from said base part, through said coil seat, and toward said cover, and
- a mounting hole that extends through said base part and said rod part;
- wherein said rod unit extends into said mounting hole and is movable relative to said mounting hole;
- and
- wherein said chamber communicating opening of said electromagnetic unit is formed at one end of said mounting hole.
17 more elements
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 electronic control device includes a device housing disposed in said air space of said cylinder body, airtightly connected to said inner surface of said cylinder body, and having
- a base wall and
- a surrounding wall that extends from a periphery of said base wall toward said cover, that is connected to said cover, and that defines an accommodating groove;
- wherein said electromagnetic unit is surrounded by said surrounding wall of said device housing;
- wherein said rod unit of said electronic control device is disposed at said base wall of said device housing;
- wherein said base wall of said device housing has at least one base vent hole through which said accommodating groove communicates with said first chamber space of said air space;
- and
- wherein said chamber communicating opening of said electronic control device cooperates with said at least one base vent hole of said base wall to define an air channel through which the gas flows.
13 more elements
Dependencies are inferred from the claim text.