Multi-needle sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorShinya Fujihara
Life of this patent
Estimating the term…
Abstract
A multi-needle sewing machine includes needle bars, presser feet, a support member configured to support the needle bars such that the needle bars can move up and down, a cutting member, a guide member configured to move between an extended position and a stand-by position, and a holding member configured to hold an end portion of a upper thread, the holding member including a fixed member that is mounted to the support member, movable members each of which is provided for one of the needle bars, and includes a guide portion formed by cutting a notch in an outer end portion on the needle bar side of the movable member, and elastic members each of which is provided for one of the movable members and configured to elastically energize the one of the movable members toward the fixed member.
Claims8
A multi-needle sewing machine, comprising:
- needle bars that are arranged and on the lower end of each of which a sewing needle can be mounted;
- presser feet, each of which is provided below one of the needle bars and configured to move up and down between a lower position and an upper position, the lower position being a position that the presser foot can contact a work cloth, the upper position being a position that is higher than the lower position;
- a support member configured to support the needle bars such that the needle bars can move up and down, and configured to move one of the needle bars to a position directly above a needle drop point by moving along an array direction in which the needle bars are arrayed, the needle drop point being a sewing position on the work cloth;
- a cutting member that is provided below the needle drop point and configured to cut an upper thread inserted through and extending downward from an eye of the sewing needle that is mounted to one of the needle bars positioned directly above the needle drop point;
- a guide member configured to move between an extended position and a stand-by position, configured to catch the upper thread at the extended position, and configured to guide the upper thread by moving from the extended position to the stand-by position, the extended position being a position to which the guide member is extended and that is located between the needle drop point and one of the presser feet provided below the one of the needle bars positioned directly above the needle drop point, the one of the presser feet being in the upper position, and the stand-by position being a position in which the guide member is separated from a gap between the needle drop point and the one of the presser feet that is in the upper position;
- and
- a holding member configured to hold an end portion of the upper thread that has been guided by the guide member and has been cut by the cutting member, the holding member including:
- a fixed member that is mounted to the support member;
- movable members each of which is provided for one of the needle bars, configured to move in relation to the fixed member and to rotate between an open position and a clamping position, and includes a guide portion formed by cutting a notch in an outer end portion on the needle bar side of the movable member, the open position being a position in which the movable member is separated from the fixed member, such that the guide member can move to the extended position, the clamping position being a position in which the movable member is positioned on a travel path of the guide member and is in contact with the fixed member, and the travel path being a path between the extended position and the stand-by position of the guide member;
- and
- elastic members each of which is provided for each one of the movable members and is configured to elastically energize the each one of the movable members toward the fixed member, such that the each one of the movable members is to be positioned in the clamping position,
- wherein:
- the guide member, when the guide member moves from the stand-by position to the extended position, moves one of the movable members from the clamping position to the open position in opposition to an elastic force of corresponding one of the elastic members, and
- the guide member, when the guide member moves from the extended position to the stand-by position, guides the upper thread to the guide portion of the corresponding one of the movable members, and the end portion of the upper thread is clamped between the fixed member and the corresponding one of the movable members, which has been moved to the clamping position by the elastic force of the corresponding one of the elastic members.
Dependencies are inferred from the claim text.