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US 11,696,734 B2Granted
Radiography apparatus
AssigneeFUJIFILM Corporation
InventorKoichi Eguchi
Life of this patent
Estimating the term…
Abstract
A radiography apparatus includes: an irradiation unit that emits radiation; an arm that can hold the irradiation unit and an image receiving unit in a facing posture; a first rotation mechanism that rotates the arm; and a friction mechanism that is switchable between a first state in which a frictional force is applied to the arm in a direction opposite to a direction in which the arm is rotated and a second state in which the frictional force applied to the arm is less than that in the first state.
Claims15
A radiography apparatus comprising:
- an irradiation unit that emits radiation;
- an arm that is capable of holding the irradiation unit and an image receiving unit that receives the radiation, which has been emitted from the irradiation unit and transmitted through a subject, in a facing posture;
- a support portion that supports the arm;
- a displacement mechanism, which is a rotation mechanism that rotates the arm and that displaces the arm with respect to the support portion;
- a friction mechanism that is switchable between a first state in which a frictional force is applied to the arm in a direction opposite to a direction in which the arm is displaced and a second state in which the frictional force applied to the arm is less than the frictional force in the first state;
- an electromagnetic brake that locks the rotation of the arm by the rotation mechanism;
- and
- an operation panel configured to switch the friction mechanism between the first state and the second state, wherein the operation panel is a touch panel type,
- wherein the rotation mechanism has a rotation shaft that is rotated with the rotation of the arm, and
- the friction mechanism comprises a friction shaft, a frictional force generation unit that is attached to the friction shaft and generates the frictional force, and an electromagnetic clutch that switches connection and disconnection between the rotation shaft and the friction shaft to switch between the first state and the second state.
7 more elements
A radiography apparatus comprising:
- an irradiation unit that emits radiation;
- an arm that is capable of holding the irradiation unit and an image receiving unit that receives the radiation, which has been emitted from the irradiation unit and transmitted through a subject, in a facing posture;
- a support portion that supports the arm;
- a displacement mechanism that displaces the arm with respect to the support portion;
- a friction mechanism that is switchable between a first state in which a frictional force is applied to the arm in a direction opposite to a direction in which the arm is displaced and a second state in which the frictional force applied to the arm is less than the frictional force in the first state;
- an attachment and detachment detection unit that detects whether or not the image receiving unit is detached from the arm;
- and
- a control unit that performs control to switch the friction mechanism to the first state in a case in which the attachment and detachment detection unit detects that the image receiving unit is detached from the arm and to switch the friction mechanism to the second state in a case in which the attachment and detachment detection unit detects that the image receiving unit is attached to the arm,
- wherein the displacement mechanism is a rotation mechanism that rotates the arm, and
- wherein the image receiving unit is attachable to and detachable from the arm.
7 more elements
A radiography apparatus comprising:
- an irradiation unit that emits radiation;
- an arm that is capable of holding the irradiation unit and an image receiving unit that receives the radiation, which has been emitted from the irradiation unit and transmitted through a subject, in a facing posture;
- a support portion that supports the arm;
- a displacement mechanism, which is a rotation mechanism that rotates the arm and that displaces the arm with respect to the support portion;
- a friction mechanism that is switchable between a first state in which a frictional force is applied to the arm in a direction opposite to a direction in which the arm is displaced and a second state in which the frictional force applied to the arm is less than the frictional force in the first state;
- an electromagnetic brake that locks the rotation of the arm by the rotation mechanism;
- and
- an operation handle that is supported by the support portion, the operation handle being provided independently of the arm and manually operated to input an operation force for displacing the arm to the displacement mechanism;
- a first gear that is fixed to an end of a handle shaft of the operation handle;
- a second gear configured to engage with the first gear, wherein, when the operation handle is pushed, the second gear is configured to engage with the first gear and rotate;
- a pulley configured to rotate when the second gear is rotated;
- and
- a belt would around the pulley and fixed to both ends of the arm,
- wherein when the pulley is rotated, the belt is configured to orbitally rotate the arm.
11 more elements
A radiography apparatus comprising:
- an irradiation unit that emits radiation;
- an arm that is capable of holding the irradiation unit and an image receiving unit that receives the radiation, which has been emitted from the irradiation unit and transmitted through a subject, in a facing posture;
- a support portion that supports the arm;
- a displacement mechanism, which is a rotation mechanism that rotates the arm and that displaces the arm with respect to the support portion;
- a friction mechanism that is switchable between a first state in which a frictional force is applied to the arm in a direction opposite to a direction in which the arm is displaced and a second state in which the frictional force applied to the arm is less than the frictional force in the first state;
- and
- an electromagnetic brake that locks the rotation of the arm by the rotation mechanism,
- wherein the rotation mechanism has a rotation shaft that is rotated with the rotation of the arm, and
- the friction mechanism comprises a friction shaft, a frictional force generation unit that is attached to the friction shaft and generates the frictional force, and an electromagnetic clutch that switches connection and disconnection between the rotation shaft and the friction shaft to switch between the first state and the second state.
6 more elements
Dependencies are inferred from the claim text.