JPH019512Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a manual sewing machine toy.

Conventionally, this type of sewing machine toy has not only not necessarily had a high reliability in the operational relationship between its needle and hook parts, but also has a complex overall structure, resulting in poor productivity and frequent failures, making it unsuitable for cost reduction. There were other defects.

The object of the present invention is to provide a manual sewing machine toy which eliminates the above-mentioned defects.

In order to achieve this purpose, the sewing machine toy of the present invention has a cloth presser member 10 and a bed 7 provided with needle holes 17 and 18, and a manual vertical swing lever 19 that moves up and down through the beds 17 and 18. and a sewing machine needle 6 having a gap-forming recess 5 on the side surface,
In addition, a machine casing 28 is provided on the underside of the bed 7.
8 is equipped with an operating rod 31 that is moved rearward by the lever 19 and returned forward by the traction spring 30, and an L-shaped looper 36 which is supported on a shaft so that it can freely swing back and forth and slightly left and right. Further, a guide pin 40 and a bent guide slot 41 are provided at the tip of the horizontal portion 39 of the looper 36 and a portion of the operating rod 31 corresponding to the horizontal portion 39, which are slidably fitted into each other. A needle tip guiding slope 43 is formed on the upper end of the vertical portion 42 of the looper 36, and a hook 44 is formed on the upper end of the front edge of the vertical portion 42. During the mid-term operation, the sewing machine needle 6 descends through the needle holes 17 and 18.
The hook 44 is pushed away by the sliding contact between the tip and the inclined surface 43 to allow the insertion of the sewing machine needle 6 into the previous thread ring 46, and the hook 44 is pushed out of the guide elongated hole 41 during the latter half of the downward movement. Looper 36 with guidance
The hook 44 is removed from the previous thread wheel 46 by the backward rotation, and during the first half of the upward return operation, the hook 44 is guided by the guide pin 40 and the guide elongated hole 41 to the lower part of the previous thread ring 46 together with the sewing machine needle 6. The main thread loop 47 penetrates into the gap forming recess 5, and during the above-mentioned mid-term operation of the upward return, the main thread loop 47 is turned sideways as the previous thread loop 48 of the subsequent sewing operation. A movable engagement protrusion 51 with a slide operation button 50 and a fixed engagement that engage each other and maintain the same position when the vertical swing lever 19 is operated at the intermediate operating position. A protrusion 52 is provided on the vertically swinging lever 19 and the arm 1.

The illustrated embodiment has a vertically split needle bar 4 whose lower end is fixed to the distal end of the arm 1 by fitting a small ring 2 and a large ring 2' and whose upper end is fixed by a fixing screw 3, respectively.
A sewing machine needle 6 having a gap-forming recess 5 on the side surface is fixed to the needle bar 4 so as to be movable up and down, and the lower end protrudes from the lower wall of the intermediate part of the arm 1 to near the top surface of the bed 7. A vertical shaft 8 is attached via a bearing member 9 so as to be vertically movable, and a presser member 10 made of transparent plastic is fixed to the lower end of the vertical shaft 8, and a square-shaped forming member 11 is fixed to the upper end of the vertical shaft 8. A coil spring 12 is wound around the vertical shaft 8 to push down the holding member 10 and the square forming member 11 so that the holding member 10 presses the upper surface of the bed 7. A horizontal shaft 14 rotated by the swinging lever 13 is attached, and a cam 15 is fixed to the inner end of the horizontal shaft 14, which presses against the lower surface of the cross-shaped forming member 11. During operation, the holding member 10 is pulled up against the force of the coil spring 12 to lift it up and away from the upper surface of the bed 7, and when the forward swinging operation is performed, the lifting is released. The presser member 10 and the bed 7 have needle holes 17 and 18 that communicate with each other at a location directly below the needle bar 4, and the needle hole 17 provided in the presser member 10 has A thread introduction port 17' opening at the outer peripheral edge of the presser member 10 is provided at each incisal edge, and a return spring 1 is provided on the side surface of the arm 1.
A vertically swinging lever 19 with 9' is supported by a central shaft 20 so as to be able to swing vertically, and the needle bar 4 is moved up and down in a long hole 21 with respect to a portion near the outer end of this vertically swinging lever 19. A feed pawl 24 is fixed via a connecting shaft 22 and is attached to the lower surface of the presser member 10 on the bed 7 and the presser member 10, and advances from the latter half of the upward return movement of the vertically swinging lever 19 (the first half of the downward movement). ) and ratchet wheel 2 with non-return pawl 25
3 is equipped with a feed roller 26 and a pinch roller 27 that perform intermittent feeding one stitch at a time.
8, and is moved rearward via the U-shaped bent portion 29 by upward swinging operation of the vertical swinging lever 19 with respect to the machine casing 28, and the traction spring 3
Equipped with an operating rod 31 that returns forward at zero, the above-mentioned feed pawl 24 is attached to the actuating rod 31, and a check pawl 25 is attached to the side wall of the machine casing 28 via support shafts 32 and 33, respectively. The return springs 34 and 35 are hung on the pawl 24 and the non-return pawl 25, and the machine casing 2
A looper 36 having a square shape is inserted into the shaft hole 37 provided at the bending point of the looper 36.
is fitted onto a horizontal shaft 38 provided inside the machine casing 28, so that the 〓-shaped looper 36 can be freely swung back and forth, and slightly left and right. The tip of the horizontal portion 39 of 36 and the horizontal portion 39 of the operating rod 31
Guide pins 40 and bent guide elongated holes 41 are provided at locations corresponding to the vertical portions of the looper 36, and an inclined surface 43 for guiding the needle tip is provided on the upper edge of the vertical portion 42 of the looper 36, which is also vertical. A hook 44 is formed at the upper end of the front edge of the portion 42, and the upper end of the vertical portion 42 in the square-shaped looper 36 is connected to the needle passage hole 1 during the downward mid-term operation of the vertically swinging lever 19.
The tip of the sewing machine needle 6 descending through threads 7 and 19 slides into sliding contact with the inclined surface 43 and is pushed away, allowing insertion of the sewing machine needle 6 into the previous thread ring 46.
In addition, during the latter half of the downward movement described above, the hook 44 is rotated backward by the backward rotation of the looper 36 guided by the guide pin 40 and the guide slot 41.
Similarly, during the first half of the upward return operation, the hook 44 is guided by the guide pin 40 and the guide slot 41 to catch the current thread ring 47 that has protruded below the previous thread ring 46 together with the sewing machine needle 6. The main thread loop 47 enters into the gap forming recess 5 during the above-mentioned mid-term upward return operation, and is maintained in a sideways state as the previous thread loop 48 of the subsequent sewing operation. A movable engagement protrusion 51 with a slide operation button 50 that engages with each other and maintains the same position when operated when the swing lever 19 is in the middle operating position.
A fixed engagement protrusion 52 is provided on the vertically swinging lever 19 and the arm 1, and separate from this, notches 56, 56' for clamping the end of the thread 55 are provided on the outer periphery of both end plates 54, 54'. On the other hand, a small hole 5 in the end plate 54 that fits into a projection 74 described later to perform a rotation stopping function.
7, and a yarn supply plate 60 on which a number of poles 59 for dispensing the spinning wheels 58 are erected.
A slot 6 is formed on the lower surface of the yarn supply plate 60.
A pair of plugs 63, 63' are provided on the upper surface of the arm 1 near the proximal end.
3', the thread supply plate 60 is removably mounted on the arm 1 by fitting the sockets 62, 62' into each other, and furthermore, a manual handle 6 for external operation is provided in the base end of the arm 1.
5, a rotating drive shaft 66 is horizontally mounted via a chassis 67, and a bevel-shaped gear 68 and a crank 69 are fixed to the drive shaft 66, and a center shaft 70 can be freely rotated around the chassis 67 on this bevel-shaped gear 68. A pinion 71 supported by the arm 1 is engaged with the pinion 71 , and the central shaft 70 of the pinion 71 is made to protrude above the base end of the arm 1 , and a rotating disk 72 is fixed to the protruding end. The above-mentioned spinning wheel 58's dispatch pin 7
3, on the same upper surface, protrusions 74 are provided around the spacing pins 73, which function to stop the rotation of the spinning wheel 58 by fitting into the small holes 57, and the cranks 69 are provided with protrusions 74 in the direction of movement. A cross slider 76 having grooves 75 orthogonal to each other is combined, the upper end of this cross slider 76 protrudes sideways to the rotating disk 72, and a latch-shaped through hole 77 for the thread 55 is opened at the protruding end. A thread 56 is attached to the top and side surfaces of the arm 1 near the tip.
Tension hanging pin 79 that gives appropriate tension to
and a thread guide 80, and furthermore, a guide scale 82 is provided on the top surface of the bed 7 when the tip end edge of the presser foot member 10 is bent into a curved upward state and parallel stitching is performed on the curved upward section 81. A guide line 83 is provided for use when storing cloth, and a drawer 84 for storing small items is attached to one side of the bed 7.

Hereinafter, how to use the above embodiment will be explained with reference to the drawings. The yarn 55 is passed through the through hole 77 provided at the upper end of the cross slider 76, and the tip of the yarn 55 is passed through the notch 56 provided in the spinning wheel 58. After clamping and fixing the spinning wheel 58 to the spacing pin 73 and the protrusion 74 to the small hole 57, the spinning wheel 58 is attached to the rotating disk 72.
It is mounted non-rotatably on top of the

Operate the manual handle 65 to rotate the rotating disk 72 and move the cross slider 76 up and down to wind the yarn 55 onto the spinning wheel 58. After winding is complete, remove the spinning wheel 58 from the rotating disk 72 and remove the end of the winding. The thread wheel 58 is clamped into a notch 56' and the excess portion is cut off.

Attach the thread supply plate 60 to the socket 6 on the arm 1.
2, 62' and the plugs 63, 63' are fitted together, and the yarn supply plate 60 is installed by inserting various types of spinning wheels 58 wound with the yarn 55 into the dispatching pole 59 provided on the yarn supply plate 60. Set many types of yarn in the

Pull out the yarn 55 you want to use from the spinning wheel 58, wrap it once around the tension pin 79, and then wrap it around the thread guide 80 and attach it to the sewing machine needle 6.
The threaded yarn 55 is passed through the needle hole 17 provided in the presser member 10 via the thread introduction port 17', and the end thereof is brought out to the rear of the presser member 10.

A fabric 87 on which a sketch 86 was drawn by transfer or direct writing on carbon paper was placed between the presser member 10 and the bed 7, and the presser member 10 was placed in the upper position by swinging the back-and-forth swinging lever 13 backwards in advance. In this state, at least the edge of the fabric 87 is inserted between the feed roller 26 and the pinch roller 27, and the back and forth swinging lever 13 is swung forward to press down the pinch roller 27 of the presser member 10 and the bed 7. The cloth 87 is held and held by the feed roller 26 in such a state that the sewing start point of the sketch 86 is located directly below the sewing machine needle 6 and the sewing direction is the same.

Stitching is carried out along the sketch 86 drawn on the fabric 87 by repeatedly pushing and releasing the vertically swinging lever 19 with the right hand while lightly supporting the fabric with the left hand.

When the sewing is finished, the yarn 55 is loosened by the spinning wheel 58, and the back and forth swinging lever 13 is swung backwards to place the presser member 10 in the upper position.Then, the flat end of the hook pin 88 is used to stitch the last stitch. While holding down the fabric 87, pull it out toward you and cut off the yarn 55, leaving about 10 cm of the pulled-out portion.

If you want to secure the seam, turn the fabric 87 inside out, pull the last seam with the hook pin 88, and repeat step 10 above.
Pull out the remaining portion of approximately 1.2 cm to the back side of the fabric 87, and make a knot at the base end of this extracted portion.

In addition, if you want to change the color of the yarn 55 or change the stitching position, perform the above operations (some parts are different, but the explanation will be omitted).
In addition, gentle curved stitches can be made by performing the above-mentioned straight line stitches while changing the direction of the fabric 87. Furthermore, zigzag stitches can be made by using the vertically swinging lever 19. is pressed to insert the sewing machine needle 6 into the fabric 87, and then operate the slide operation button 50 to release the movable engagement protrusion 51.
After the sewing machine needle 6 is maintained in the state of pricking the fabric 87 by locking the and the fixed engagement protrusion 52, the presser member 10 is moved to the upper position, and the fabric 87 is pricked in this upper position. Move it in the desired direction, then lower the presser member 10 and press the fabric 87 again.
This can be done by pinching and pressing the button and returning the slide operation button 50, and performing the operations described above after this return.Furthermore, the filling stitches in the sketch 36 can be done in the case of the above-mentioned straight stitches (machine stitches), etc. This is possible by using the chain stitch formed on the back side of the fabric 87, that is, by turning the fabric 87 inside out and performing meandering and spiral parallel stitches using straight stitches, curved stitches, and zigzag stitches. It is.

In addition, when performing meandering or spiral parallel sewing work, it is convenient to align the previous stitches with the guide scale 82 and proceed with sewing in a neat parallel state.

Since the present invention has the above-mentioned structure, the relationship between the needle part and the hook part is not only highly reliable and has a favorable effect, but also the structure of these parts is simple and has good productivity with few failures and low cost. In particular, when the vertical swinging lever 19 is operated at the intermediate operating position, the slide operation button 50 engages with each other to maintain the same position.
Since a movable engagement protrusion 51 and a fixed engagement protrusion 52 are provided on the vertically swinging lever 19 and the arm 1, the sewing machine needle 6 can be inserted into the fabric being sewn by operating the slide button 50 as necessary. Therefore, if the direction of the fabric is changed significantly or reversed while sewing is progressing, it is possible to do so without removing the sewing machine needle from the fabric. There is no risk of misalignment occurring at the beginning of subsequent sewing, and products that can be used without causing misalignment are, for example, those disclosed in Japanese Utility Model Publication No. 42-8181 or Japanese Patent Publication No.
The former is a combination structure of a vertically swinging lever, a cam device, an electric motor circuit, etc., and the latter is a combination structure of a vertically swinging lever, an axle, a stop plate, a spring, and a cam device. Compared to these two, the sewing machine toy of the present invention has a slide operation that engages with each other and maintains the same position when operated when the vertical movement lever 19 is in the middle operating position. A movable engagement protrusion 51 with a button 50 and a fixed engagement protrusion 52 are connected to the vertically swinging lever 1.
9 and the arm 1, the structure of this part is extremely simple and has excellent effects such as being optimal as a toy mechanism.

In addition, in the figure, 90 is a connecting shaft, 93 is a bearing member, and 94
95 and 95' are needle head fitting grooves, 96 is the center axis of the drawer 84, and 97 is a drawer cover.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a perspective view of the whole as seen from the left, Figure 2 is a perspective view of the whole as seen from the right, Figure 3 is a partial side view,
FIG. 4 is a partially omitted sectional view taken along line A-A in FIG.
Figure 5 is a cross-sectional view taken along line A'-A' in Figure 1, Figure 6 is a cross-sectional view taken along line B-B in Figure 2, and Figure 7 is a cross-sectional view taken along line A'-A' in Figure 2.
A sectional view taken along line B'-B', Fig. 8 is an exploded perspective view of the looper section and feed roller section, Fig. 9 is an exploded perspective view of the traverse device section, and Fig. 10 is an exploded perspective view of the needle bar section. , FIGS. 11 to 14 are sectional views showing the operational relationship between the sewing machine needle and the looper. 1...Arm, 2...Small ring, 2'...Large ring, 3...Fixing screw, 4...Needle bar, 5...Gap forming recess, 6...Sewing machine needle, 7...Bed, 8
... Vertical shaft, 9 ... Bearing member, 10 ... Pressing member,
11...Flat-shaped forming member, 12...Coil spring, 1
3... Back and forth swing lever, 14... Horizontal shaft, 15...
Cam, 17, 18...needle hole, 17'...thread introduction port, 19...vertical swing lever, 19'...return spring, 20...center shaft, 21...long hole, 22
...Connection shaft, 23...Rawl wheel, 24...Feed pawl, 2
5... Non-return claw, 26... Feed roller, 27... Pinch roller, 28... Machine casing, 29... U-shaped bent portion, 30... Traction spring, 31... Operating rod, 32,
33... Support shaft, 34, 35... Return spring, 3
6... Looper, 37... Shaft hole, 38... Horizontal shaft,
39... Horizontal part, 40... Guide pin, 41... Guide slot, 42... Vertical part, 43... Inclined surface, 44
...Hook hook, 46...Previous thread ring, 47...Main thread ring, 48...Previous thread ring for subsequent sewing, 50...Slide operation button, 51...Movable engagement protrusion, 52...
...Fixed engagement protrusion, 54, 54'...End plate, 55...
... wool, 56, 56' ... notch, 57 ... small hole,
58... Spinning wheel, 59... Dispatch pole, 60...
Yarn supply plate, 61, 61'... Sliding, 62, 62'...
...Socket, 63, 63'...Plug, 65...
Manual handle, 66... Drive shaft, 67... Chassis, 68... Bevel gear, 69... Crank, 70
... Central shaft, 71 ... Pinion, 72 ... Rotating disk, 73 ... Sparring pin, 74 ... Protrusion, 75 ...
Groove, 76...Cross slider, 77...Through hole, 79...Tension hanging pin, 80...Thread guide, 81...Curved upward portion, 82...Guide scale, 83...Reference line, 84... ... Drawer, 86 ... Sketch, 87 ... Cloth, 88 ... Hook pin, 90 ... Connection shaft, 93 ... Bearing member, 94 ... Integration member, 95, 95' ... Needle head fitting groove , 96... Central axis, 97... Drawer cover part.

Claims (1)

[Scope of utility model registration request] A sewing machine needle having a presser foot member 10 and a bed 7 provided with needle holes 17 and 18, and a sewing machine needle that can be moved up and down via the beds 17 and 18 by a manual vertical swing lever 19 and has a gap-forming recess 5 on the side surface. 6,
In addition, a machine casing 28 is provided on the underside of the bed 7.
8 is equipped with an operating rod 31 that is moved rearward by the lever 19 and returned forward by the traction spring 30, and an L-shaped looper 36 which is supported on a shaft so that it can freely swing back and forth and slightly left and right. Further, a guide pin 40 and a bent guide slot 41 are provided at the tip of the horizontal portion 39 of the looper 36 and a portion of the operating rod 31 corresponding to the horizontal portion 39, which are slidably fitted into each other. A needle tip guiding slope 43 is formed on the upper end of the vertical portion 42 of the looper 36, and a hook 44 is formed on the upper end of the front edge of the vertical portion 42. During the mid-term operation, the sewing machine needle 6 descends through the needle holes 17 and 18.
The hook 44 is pushed away by the sliding contact between the tip and the inclined surface 43 to allow the insertion of the sewing machine needle 6 into the previous thread ring 46, and the hook 44 is pushed out of the guide elongated hole 41 during the latter half of the downward movement. Looper 36 with guidance
The hook 44 is removed from the previous thread wheel 46 by the backward rotation, and during the first half of the upward return operation, the hook 44 is guided by the guide pin 40 and the guide elongated hole 41 to the lower part of the previous thread ring 46 together with the sewing machine needle 6. The main thread loop 47 penetrates into the gap forming recess 5, and during the above-mentioned mid-term operation of the upward return, the main thread loop 47 is turned sideways as the previous thread loop 48 of the subsequent sewing operation. A movable engagement protrusion 51 with a slide operation button 50 and a fixed engagement that engage each other and maintain the same position when the vertical swing lever 19 is operated at the intermediate operating position. A sewing machine toy characterized in that a protrusion 52 is provided on a vertically swinging lever 19 and an arm 1.