Brother Kogyo Kabushiki-kaisha

Daisuke Ueda

Nobuhiko Funato

Takahira Osamura

Mitsuhiro Iida

Yasuhiko Kawaguchi

Midori Komada

Hiroshi Yamasaki

Fumihiro Nonobe

Koji Funaki

Yuki Taguchi

Junya Kito

Masayuki Hori

Katsuhisa Hasegawa

Toshiyuki Mamiya

Masahiko Nagai

Akifumi Nakashima

Eiichi Hamajima

Masaru Jimbo

Hironori Matsushita

Toru Imaeda

Kiyomi Kato

Yasuhiro Ishiyama

Kouji Makiyama

Naoki Kawamoto

Kazusa Kondo

Akifume Nakashima

An embroidery sewing machine includes a bed portion, a column portion, an arm portion, and a carriage. The bed portion extends in a first direction. The column portion extends upward from an end portion of the bed portion. The arm portion extends in the first direction from an upper end portion of the column portion. The arm portion includes a support portion provided at one side portion of the arm portion in a second direction crossing the first direction. The carriage includes a frame moving portion and a carriage moving portion. The frame moving portion is configured to move an embroidery frame attached to the carriage. The carriage moving portion is configured to move the frame moving portion in the first direction. The carriage moving portion is supported by the support portion. The carriage moving portion extends downward and has a lower end portion connected to the frame moving portion.

Embroidery sewing machine including carriage for moving embroidery frame attached thereto

A sewing machine includes a needle plate, a bed portion, a first urging member, a first engagement member, a second engagement member, and a lock release mechanism. The bed portion is configured to support the needle plate. The first urging member is provided inside the bed portion and configured to urge the needle plate upward. The first engagement member is provided on the needle plate. The second engagement member is provided inside the bed portion, and is configured to fix the needle plate in a fixed position by being engaged with the first engagement member of the needle plate pressed downward against an urging force of the first urging member. The lock release mechanism is configured to release the engagement of the first engagement member and the second engagement member.

Sewing machine

An embroidery machine includes an outer ring, an inner ring, a pair of screw mounts, a lever, a nut, and an adjusting screw. The outer ring includes a dividing portion. The inner ring and the outer ring holds a workpiece therebetween. The screw mounts are disposed at the dividing portion to oppose each other. The lever is disposed at one of the screw mounts and rotatable about a rotation axis. The nut is slidably held in the lever at a position eccentric from the rotation axis. The adjusting screw is mounted across the screw mounts and threadedly engaged with the nut. A shortest distance between a first surface of the one of the screw mounts and the nut is defined as a specific distance. The specific distance when the lever is at a second position is longer than the specific distance when the lever is at a first position.

Embroidery hoop

A presser device includes an attachment body, an adjustment member, and a presser body. The attachment body includes an attachment portion and a shaft. The attachment portion is attached to a presser bar included in a sewing machine and extending in a first direction. The shaft extends in a second direction that intersects the first direction. The adjustment member is configured to be screwed together with one end of the shaft and to rotate with respect to the shaft around a rotation axis extending in the second direction. The presser body includes an insertion hole and an insertion portion, the insertion hole penetrating in the first direction. The insertion portion is configured such that the shaft is inserted therethrough. The presser body is configured to move in the second direction with respect to the attachment body along the shaft in accordance with the rotation of the adjustment member.

Presser device

A sewing machine includes a needle plate, a feed dog configured to move a workpiece, a vertical drive mechanism configured to vertically drive the feed dog, a switch mechanism, a cutting mechanism, and an actuator. The switch mechanism is configured to switch from an active state where the feed dog is driven, by the vertical drive mechanism, above and below an upper surface of the needle plate to an inactive state where an upper surface of the feed dog is maintained below the upper surface of the needle plate. The cutting mechanism includes a blade configured to cut a thread at a position below the needle plate. The actuator is configured to commonly drive the switch mechanism and the cutting mechanism.

In a lower thread winding device, a motor rotates a thread winding shaft on which a bobbin is mounted. A sensor lever includes a contact portion contactable with a lower thread wound on the bobbin, and a cam piece. A contact includes a pin configured to contact the cam piece and rotates between a first position at which the pin contacts a first outer peripheral portion of the cam piece, and a second position at which the pin contacts a second outer peripheral portion of the cam piece. A lever shifts a position of the pin located when the contact is at the first position. The controller drives the motor when the contact is at the first position and stops driving the motor upon receipt of a detection result, by the detector, indicating that the contact is at the second position.

Lower thread winding device

An embroidery frame includes a mounting portion to be mounted on a sewing machine and a frame portion. The frame portion has a first frame, a hinge portion, a second frame, a first clamping portion, and a second clamping portion. The first frame is connected to the mounting portion. The hinge portion is connected to one end of the first frame. The second frame is connected at one end to the hinge portion such that the second frame is able to rotate with respect to the first frame. The first clamping portion is configured to clamp the first sewing object together with the first frame while the second frame is open with respect to the first frame. The second clamping portion is configured to clamp the second sewing object together with the second frame while the second frame is open with respect to the first frame.

Embroidery frame

An embroidery frame transport device includes a guide portion, a lever, and a locking portion. The guide portion is configured to prescribe a first direction being a movement direction when the embroidery frame is removed and a second direction being a movement direction when the embroidery frame is mounted. The lever is configured to move between a first restriction position that restricts the movement in the first direction of the embroidery frame and a first release position that does not restrict the movement in the first direction of the embroidery frame. The locking portion is configured to move between a second restriction position that restricts the movement in the second direction of the embroidery frame and a second release position that does not restrict the movement in the second direction of the embroidery frame.

Embroidery frame transport device and sewing machine

An embroidery frame includes a pair of a first frame and a second frame configured to clamp a sewing object, and a lock mechanism. The lock mechanism is configured to switch a position of the second frame with respect to the first frame to at least three positions including a first position, a second position and a third position. The first position is a position in which the second frame is closed with respect to the first frame. The second position is a position in which, with respect to the first frame, the second frame is more open, by a first predetermined amount, than in the first position. The third position is a position in which, with respect to the first frame, the second frame is open by a second predetermined amount. The second predetermined amount is larger than the first predetermined amount.

Embroidery frame, embroidery frame unit, and sewing machine

A sewing machine includes a threading mechanism, a holding member, and a movement mechanism. The threading mechanism is configured to move a hook between a standby position and an operative position. The holding member includes a cutting blade and a clamping portion. The cutting blade is configured to cut an upper thread. The clamping portion is configured to clamp and hold a thread end of the cut upper thread. The movement mechanism is configured to move the holding member to a first position and a second position. The first direction is a direction from the standby position to the operative position. The second position is a position on a second direction side with respect to the first position. The second direction is a direction opposite to the first direction.

An embroidery frame includes a pair of a first frame and a second frame configured to clamp a sewing object and a lock mechanism. The lock mechanism includes a support member configured to rotatably support the second frame such that a posture of the second frame with respect to the first frame to clamp the sewing object is switchable to a first posture and a second posture. The first posture is a posture in which a first surface of the second frame faces the first frame. The second posture is a posture in which a second surface of the second frame faces the first frame. The second surface is on the opposite side to the first surface. The lock mechanism is configured to press the second frame in at least the first posture toward a first frame side with respect to the second frame.

A sewing machine includes a drive shaft rotated by a motor, a cam member fixed to the drive shaft and including a first cam and a second cam, a forked member including a main body member and an auxiliary member, an urging device, and a presser mechanism. At least one of a first cam surface of the first cam and a second cam surface of the second cam is inclined with respect to the drive shaft. The main body member and the auxiliary member are disposed to face each other such that the cam member is clamped between them. The urging device urges the main body member and the auxiliary member in a direction to clamp the cam member. The presser mechanism drives a presser member to hold a cloth, by swinging of the forked member caused by the rotation of the cam member.

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.

A sewing machine includes a cutting mechanism, a picker, and a drive portion. The cutting mechanism, which cuts an upper thread and a lower thread, is provided close to a shuttle that supplies the lower thread. The picker is provided such that it is able to move between an operating position and a non-operating position. The operating position is a position of the picker where the picker is proximate to the shuttle. The non-operating position is a position of the picker farther away from the shuttle than the operating position. The picker holds the upper thread in the operating position. The drive portion is provided as a common drive source for a cutting operation by the cutting mechanism and for movement of the picker.

Growing community of inventors

Owariasahi, Japan

Daisuke Ueda