Back to results
US 2010/0006789 A1Published application
Operating Device for Control Valve
AssigneeKubota Corporation
InventorKiyoshige Maezawa
Life of this patent
Estimating the term…
Abstract
An operating device with an operating lever for a control valve includes: an input member connected to the operating lever; an output member connected to a slide spool of the control valve; and a swing link for relaying a displacement of the input member to the output member. The swing link is swingable about a swing shaft center on one end and is connected to the input and output members. A latch portion in the swing link is farther than a connecting point with the output member from the swing shaft center. A lock body is switchably operable between a lock position and a release position, and at the lock position, engaged with the latch portion at a neutral position to limit a swing of the swing link about the swing shaft center by which the control valve is locked at a neutral state.
Claims8
A operating device with an operating lever for operating a control valve connected to an actuator comprising:
- an input member to which an operational displacement of the operating lever is transmitted;
- an output member connected to a slide spool of the control valve;
- a swing link configured to relay a displacement of the input member to the output member, the swing link being swingable about a swing shaft center defined on one end of the swing link and being connected to the input member and the output member;
- a latch portion formed in the swing link on a free end side at a position farther than a connecting point with the output member from the swing shaft center;
- a lock body switchably operable between a lock position and a release position, the lock body at the lock position being engaged with the latch portion of the swing link at a neutral position to limit a swing motion of the swing link about the swing shaft center by which the control valve is locked at a neutral state, and the lock body at the release position releasing the latch portion to cancel a limitation of the swing motion of the swing link by which a locking of the control valve is released.
2 more elements
An operating device with an operating lever for operating a control valve connected to an actuator comprising:
- a first input member to which a first operational displacement of the operating lever is transmitted;
- a second input member to which a second operational displacement of the operating lever is transmitted;
- a first output member connected to a slide spool of a first control valve;
- a second output member connected to a slide spool of a second control valve;
- a first swing link configured to relay a displacement of the first input member to the first output member, the first swing link being swingable about a first swing shaft center defined on one end of the first swing link and being connected to the first input member and the first output member;
- a first latch portion formed in the first swing link on a free end side at a position farther than a connecting point with the first output member from the first swing shaft center;
- a second swing link configured to relay a displacement of the second input member to the second output member, the second swing link being swingable about a second swing shaft center defined on one end of the second swing link and being connected to the second input member and the second output member;
- a second latch portion formed in the second swing link on a free end side at a position farther than a connecting point with the second output member from the second swing shaft center;
- a lock body switchably operable between a lock position and a release position,
- the lock body at the lock position being engaged with the first latch portion of the first swing link at a neutral position and the second latch portion of the second swing link at a neutral position to limit a swing motion of the swing link about the swing shaft center by which the first control valve and second control valve are locked at a neutral state, and
- the lock body at the release position releasing the first latch portion and the second latch portion to cancel a limitation of the swig motion of the swing link by which a locking of the first control valve and the second control valve is released.
8 more elements
An operating device with an operating lever for operating a control valve connected to an actuator comprising:
- a first input member to which a first operational displacement of the operating lever is transmitted;
- a second input member to which a second operational displacement of the operating lever is transmitted;
- a first output member connected to a slide spool of a first control valve;
- a second output member connected to a slide spool of a second control valve;
- a first swing link configured to relay a displacement of the first input member to the first output member, the first swing link being swingable about a first swing shaft center defined on one end of the first swing link and being connected to the first input member at a first connecting point and the first output member at a second connecting point;
- a first latch portion formed in the first swing link on a free end side at a position farther than the second connecting point with the first output member from the first swing shaft center;
- a second swing link configured to relay a displacement of the second input member to the second output member, the second swing link being swingable about a second swing shaft center defined on one end of the second swing link and being connected to the second input member at a first connecting point and the second output member at a second connecting point;
- a second latch portion formed in the second swing link on a free end side at a position farther than the second connecting point with the second output member from the second swing shaft center;
- a lock body switchably operable between a lock position and a release position;
- the lock body at the lock position being engaged with the first latch portion of the first swing link at a neutral position and the second latch portion of the second swing link at a neutral position to limit a swing motion of the swing link about the swing shaft center by which the first control valve and the second control valve are locked at a neutral state, and
- the lock body at the release position releasing the first latch portion and the second latch portion to cancel a limitation of the swing motion of the swing link by which a locking of the first control valve and the second control valve is released.
8 more elements
Dependencies are inferred from the claim text.