Produits et services

Electric sewing machines; parts and fittings for electric sewing machines.

Produits et services

Electric sewing machines; parts and fittings for electric sewing machines.

Produits et services

Electric sewing machines; parts and fittings for electric sewing machines.

Produits et services

Parts and fittings for electric sewing machines, namely, hooks specially adapted for sewing machines

Abrégé

Provided is an airflow generator that is capable of easily adding a cooling function to an existing full rotary shuttle. This airflow generator (50) is used for a full rotary shuttle which includes: an outer shuttle (21) that has an outer shuttle body (24) which has a bottom (29) provided with an opening that faces external space; an inner shuttle (23) that is accommodated inside the outer shuttle body (24) in a state of being held against rotating coaxially about the axis of rotation (L) of the outer shuttle (21); and a drive shaft (18) that is connected to the outer shuttle body (24) and causes the outer shuttle (21) to be driven about the axis of rotation (L), wherein the outer shuttle (21) has a boss part (30) that connects the drive shaft (18) to the outer shuttle body (24). The airflow generator (50) is characterized by having a base part that fits into the boss part (30) and a first blade (63) provided connected to the base part and facing the opening, and is characterized in that an airflow that flows through the opening of the outer shuttle body (24) is generated when the drive shaft (18) causes the outer shuttle (21) to be driven about the axis of rotation (L).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

According to the present invention, in order to prevent breakage of a thread and occurrence of a clew, an engagement section (52) is provided at one end portion, in one diameter direction, of a latch member (35) to fit in an engagement recess (28) and engage with the engagement recess (28) in a state where a bobbin case (4) is mounted to an inner shuttle (3). In the engagement recess (28), the engagement section (52) has a first leg portion (71) that comes, from the upstream side in a rotation direction (A), into contact elastically with a first inner wall section (29) which is directed toward the upstream side in the rotation direction (A), and a second leg portion (72) that comes, from the downstream side in the rotation direction (A), into contact elastically with a second inner wall section (30) which is directed toward the downstream side in the rotation direction (A).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs
• D05B 57/26 - Porte-canettes ou boîtes à canetteProtection de porte-canettes ou de boîtes à canetteDispositifs d'évacuation de la canette

Abrégé

In order to prevent thread breakage and generation of balls of thread, a spring member (50) is provided in an engagement recess part (28) of an inner hook (3) to spring bias an engagement part (27a) of an engagement piece (27) of a bobbin case (5) toward a downstream side of a rotation direction (A) so as to keep the bobbin case (5) from rattling and vibrating against the inner hook (3).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

In order to prevent thread breakage and incidental looping, a thread escape recess (18) recessed outward in the radial direction relative to an imaginary cylindrical surface inscribed in an internal peripheral part (17) of an inside shuttle (3) is provided adjacent to the downstream side in the rotation direction (A) of a needle location hole (11).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

Provided is a vertical full-rotation shuttle that, even if the slip of the needle thread is poor, can reliably prevent breakage of the needle thread that occurs with rotation of an outer shuttle, and that can stably form high-quality seams. A vertical full-rotation shuttle (41) includes: an outer shuttle (46) that is rotationally driven in a rotation direction (A); and an inner shuttle (47) that is held by the outer shuttle (46) in a state where rotation around a rotation axis line (J1) is prevented. The outer shuttle (46) includes a circumferential wall (53) which is disposed extending along the circumferential direction around the axis line (J1), and in which a track groove (51) is formed in an inner circumferential portion thereof. The circumferential wall (53) includes: a hook tip (54) that is formed in a tapered shape towards the rotation direction (A) downstream side; and a lateral edge portion (60) that extends towards one side in the axial direction as the hook tip (54) advances towards the rotation direction (A) upstream-side. When the circumferential wall (53) is deployed in the circumferential direction, the lateral edge portion (60) is formed in a recessed shape that is recessed to the rotation direction (A) upstream side in relation to a virtual line (L1) which passes through both ends (54a, 60a) of the lateral edge portion (60).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

The present invention provides a needle guard position adjustment device (40) capable of adjusting the radial position of a needle guard plate (26) with high accuracy. The needle guard position adjustment device (40) is provided on a rotating hook (20) in which a blade tip part (25) tapered toward the downstream side of a rotation direction and a needle guard plate (26) tapered toward the upstream side of the rotation direction are disposed, and includes a cam member (50) disposed inward from the needle guard plate (26) and in contact with the needle guard plate (26) and a cam-fitting plate (41) displaceable in a direction perpendicular to an axis of rotation (L1). In the cam-fitting plate (41) are formed a first through-hole (43) and a second through-hole (44) comprising a long hole extending in the direction of approaching and separating from the cam member, the distance (D1) between the center axis (Q1) of the first through-hole (43) and a cam axis (L2) being shorter than the distance between the center axis (Q1) of the first through-hole (43) and the center axis (Q2) of the second through-hole (44).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

Provided is a needle-handler position adjusting device that enables fine adjustments to the curvature of a needle guard (16) to be performed smoothly and accurately, and in which the number of parts is reduced to enable simplified configuration and improved maintenance properties. An outer shuttle (17) is provided with: a first pin (21) that is held so as to be displaceable in the direction of a first axis (L11), which is on a hypothetical plane that is perpendicular to a rotary axis (L2) and which intersects with a half-diameter line that centers on the rotary axis (L2); and a second pin (22) that is screwed so as to be displaceable in the direction of a second axis (L12), which is orthogonal to the first axis (L11). In the first pin (21), an end face (23) that supports an apical part (16a) of the needle guard (16) is formed at one end (21a) in the direction of the first axis (L11), and a conical first contacting face (24) is formed at the other end (21b) in the direction of the first axis (L11). In the second pin (22), a conical second contacting face (25) that contacts the first contacting face (24) of the first pin (21) is formed at one end (22a) in the direction of the second axis (L12), and a tool fitting part (26), to which a tool for screwing the second pin (22) forwards or backwards in the direction of the second axis (L12) is fitted, is disposed to the other end (22b) in the direction of the second axis (L12).

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

A vertical full rotary hook comprises: an outer hook which has a point portion (54) which captures an upper thread (T2) threaded through a sewing needle (43); an inner hook (47) housed so as to share an axial line (L1) with the outer hook; and a bobbin case (48) which is detachably mounted on the inner hook (47), and in which a bobbin (80), on which a lower thread (T1) is wound, is housed. On an end wall portion (85) of the bobbin case (48) are provided: a lower thread guide portion (100) on which is formed a notch (102) which is open facing the upstream side of the direction of rotation (A) of the outer hook, and a thread detachment prevention piece (105) which has a fixed portion (103) which is fixed to the outer surface of the end wall portion (85) and an abutting portion (104) which resiliently abuts the portion of the outer surface of the lower thread guide portion (100) where the notch (102) is opened. This vertical full rotary hook eliminates problems in which, at sewing, the upper thread (T2) becomes lodged on the lower thread guide portion (100) while being threaded thereover, thereby preventing occurrence of broken thread, a clew, or the like.

Classes IPC  ?

• D05B 57/26 - Porte-canettes ou boîtes à canetteProtection de porte-canettes ou de boîtes à canetteDispositifs d'évacuation de la canette
• D05B 57/14 - Navettes avec crochets rotatifs

Produits et services

(1) Rotating hooks and shuttle hooks for sewing machines.

Produits et services

(1) Rotating hooks and shuttle hooks for sewing machines.

Produits et services

Rotating Hook and Shuttle Hook for Sewing Machine

Produits et services

Rotating Hook and Shuttle Hook for Sewing Machines