Sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorDaisuke Ueda
Life of this patent
Estimating the term…
Abstract
A sewing machine includes a needle bar, a needle bar release mechanism, a drive portion, a contact member, and a switching mechanism. The needle bar is configured to move up and down. The needle bar release mechanism is configured to connect and disconnect the transmission of the driving force between the drive shaft and the needle bar. The drive portion is configured to drive the needle bar release mechanism. The contact member is configured to come into contact with the needle bar in a case where the needle bar is positioned at a top dead point of the range within which the needle bar is able to move up and down. The switching mechanism is configured to switch the position of the contact member between a first position and a second position.
Claims8
A sewing machine, comprising:
- a needle bar configured to move up and down, a driving force of a sewing machine motor being transmitted through a drive shaft to the needle bar;
- a needle bar release mechanism configured to connect and disconnect a transmission of the driving force between the drive shaft and the needle bar;
- a drive portion configured to drive the needle bar release mechanism;
- a contact member configured to come into contact with the needle bar in a case where the needle bar is positioned at a top dead point of a range within which the needle bar is able to move up and down;
- and
- a switching mechanism configured to switch a position of the contact member between a first position and a second position, the first position being a position in which the contact member does not come into contact with the needle bar in a case where the needle bar is positioned at the top dead point, and the second position being a position in which the contact member does come into contact with the needle bar in a case where the needle bar is positioned at the top dead point, the switching mechanism positioning the contact member in the first position when the sewing machine is in a connected state, the connected state being a state in which the transmission of the driving force between the drive shaft and the needle bar is connected, and the switching mechanism positioning the contact member in the second position when the sewing machine is in a connection transition state, the connection transition state being a state in which the sewing machine is in transition from a disconnected state to the connected state, the disconnected state being a state in which the transmission of the driving force between the drive shaft and the needle bar is disconnected.
A sewing machine, comprising:
- a motor configured to generate a driving force;
- a needle bar configured to move up and down by the driving force of the motor;
- a needle bar release mechanism configured to connect and disconnect a transmission of the driving force of the motor to the needle bar;
- and
- a contact member configured to move between a first position and a second position, the first position being a position in which the contact member does not come into contact with the needle bar in a case where the needle bar is positioned at a top dead point of a range within which the needle bar is able to move up and down when the sewing machine is in a connected state, the connected state being a state in which the needle bar release mechanism connects the transmission of the driving force of the motor to the needle bar, and the second position being a position in which the contact member does come into contact with the needle bar in a case where the needle bar is positioned at the top dead point when the sewing machine is in a connection transition state, the connection transition state being a state in which the sewing machine is in transition from a disconnected state to the connected state, the disconnected state being a state in which the needle bar release mechanism disconnects the transmission of the driving force of the motor to the needle bar.
Dependencies are inferred from the claim text.