Sewing machine
A sewing machine and needle technology, which is applied to sewing machine components, sewing machine needle holders, sewing machine thread take-up devices, etc., to achieve the effects of improving reliability, preventing machine needles from falling off, and preventing poor sewing
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no. 2 Embodiment
[0107] The second embodiment of the position change mechanism is for example Figure 5 shown.
[0108] In the present embodiment, the structure other than the position changing mechanism 30A is the same as that of the sewing machine 10, and thus redundant description will be omitted.
[0109] Should Figure 5 It is a plan view of the position changing mechanism 30A, and its arrangement on the sewing machine is different from the position changing mechanism 30 in that it is supported on an unillustrated frame near the outer side of the table 11 .
[0110] That is, the position change mechanism 30A has: a link body 32A supported by a frame capable of swinging in the vertical direction as a center, an engaging member 31A fixed to the base of the link body 32A, and a mechanism for giving the link body 32A a swinging action. Drive mechanism.
[0111] The engaging member 31A swings along with the swing of the link body 32A, and its front end portion is formed in a key shape. In ...
no. 3 Embodiment
[0116] The third embodiment of the position change mechanism is for example Image 6 shown.
[0117] In this embodiment, it is not necessary to provide the elongated hole 25 in the rotary thread take-up lever 20, and the structure other than the position changing mechanism 30B is the same as that of the sewing machine 10, so repeated description will be omitted.
[0118] Should Image 6 It is a front view of the sewing machine 10B having the position changing mechanism 30B.
[0119] The position changing mechanism 30B has: a link body 32B supported by the frame so as to be swingable in the horizontal direction (direction parallel to the upper shaft 104), an engaging member 31B fixedly supported on the base of the link body 32B, and a The link body 32B is a motor 33B as a drive mechanism that swings.
[0120] Hook up part 31B, swing along with the swing of link body 32B, its front end portion is bent to this face side, so that can be with the face ( Image 6 The surface sho...
no. 4 Embodiment
[0125] The fourth embodiment of the position changing mechanism is for example Figure 7 shown.
[0126] In this embodiment, it is not necessary to provide the elongated hole 25 in the rotary thread take-up lever 20, and the structure other than the position change mechanism is the same as that of the sewing machine 10, so repeated description will be omitted.
[0127] Should Figure 7 It is a front view of 10C of sewing machines with a position changing mechanism.
[0128] The position change mechanism is substantially on the same plane as the platen 11, and is arranged between the thread guide 112 and the rotary thread take-up lever 20, and has the following features: it is supported to move up and down along the notch provided on the frame The engagement member 31C and a drive mechanism such as a solenoid (not shown) for switching the engagement member 31C between the upper and lower positions.
[0129] The engaging member 31C moves substantially vertically upward from t...
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