Sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorShinya FUJIHARA
Life of this patent
Estimating the term…
Abstract
A sewing machine includes a lower shaft, a feed dog, a feed bracket, a first shaft, a first arm, a second shaft, a second arm, an engagement receiving portion, an adjustment member, and an urging member. The first arm is configured to support the feed bracket to be swingable around the first shaft. The second shaft is fixed to the first arm and extending in a shaft direction. The engagement receiving portion is configured to engage with the second arm to be movable with respect to the second arm. The adjustment member is configured to swing the first arm around the first shaft and to swing the feed dog supported by the feed bracket in both directions along a transport direction. The urging member is configured to cause an urging force in an action direction along the shaft direction to act on the second arm.
Claims17
A sewing machine comprising:
- a lower shaft;
- a feed dog configured to transport a sewing object in a transport direction;
- a feed bracket configured to support the feed dog;
- a first shaft extending in a shaft direction, the shaft direction being orthogonal to both an up-down direction and the transport direction;
- a first arm through which the first shaft is inserted, the first arm being configured to support the feed bracket to be swingable around the first shaft;
- a second shaft fixed to the first arm and extending in the shaft direction;
- a second arm through which the second shaft is inserted, the second arm being supported to be movable along the shaft direction;
- an engagement receiving portion configured to engage with the second arm to be movable with respect to the second arm;
- an adjustment member configured to swing the first arm around the first shaft and to swing the feed dog supported by the feed bracket in both directions along the transport direction, by displacing the second arm in accordance with rotation of the lower shaft, in a state of the engagement receiving portion and the second arm being engaged with each other;
- and
- an urging member configured to cause an urging force in an action direction along the shaft direction to act on the second arm.
A sewing machine comprising:
- a lower shaft;
- a feed dog configured to transport a sewing object in a transport direction;
- a feed bracket configured to support the feed dog;
- a first shaft extending in a shaft direction, the shaft direction being orthogonal to both an up-down direction and the transport direction;
- a first arm through which the first shaft is inserted, the first arm being configured to support the feed bracket to be swingable around the first shaft;
- a second shaft fixed to the first arm and extending in the shaft direction;
- a second arm through which the second shaft is inserted, the second arm being supported to be movable along the shaft direction, and the second arm including an engagement pin inserted through the second arm and an action portion fixed to the engagement pin;
- an engagement receiving portion configured to engage with the engagement pin to be movable with respect to the engagement pin;
- an adjustment member configured to swing the first arm around the first shaft and to swing the feed dog supported by the feed bracket in both directions along the transport direction, by displacing the second arm in accordance with rotation of the lower shaft, in a state of the engagement receiving portion and the engagement pin of the second arm being engaged with each other;
- an urging member configured to cause an urging force to act on the second arm in an action direction that is a direction, of the shaft direction, in which a coupling section between the first arm and the second shaft is positioned with respect to the second arm;
- and
- a support member including a first wall and a second wall facing each other in the shaft direction, a first pin insertion portion through which the engagement pin is inserted and a first shaft insertion portion through which the second shaft is inserted being formed in the first wall, a second pin insertion portion through which the engagement pin is inserted and a second shaft insertion portion through which the second shaft is inserted being formed in the second wall, the support member having a U shape with the first wall and the second wall, the first wall and the second wall forming side surfaces of the support member, and the support member being configured to support the engagement pin inserted through the first pin insertion portion and the second pin insertion portion, with respect to the first arm, via the second shaft inserted through the first shaft insertion portion and the second shaft insertion portion.
Dependencies are inferred from the claim text.