JPH0744309Y2 - Toy sewing machine - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention is designed to advance the cloth in the sewing direction when sewing the cloth in a chain stitch on the front and back of the cloth with one sewing thread. The present invention relates to a toy sewing machine that enables embroidery sewing, for example, by freely adjusting the width of each lateral feed.

(Prior Art) Conventionally, the present applicant has proposed various toy sewing machines, and
Attempts have been made to make various improvements, which have always been to simplify the construction and make it easy for children and infants to handle and robust.

Then, the toy sewing machine tends to be simplified like a general toy model because it is handled by children.
The sewing operation mechanism is a chain stitch method using one sewing thread. That is, for example, as disclosed in Japanese Utility Model Publication No. 61-12942, a thread ring is formed on the back surface of the cloth by the first insertion of the sewing needle into the cloth, and a thread ring is formed on the back surface of the cloth by the second insertion of the sewing needle. The thread bobbin of the actual machine is omitted by fixing the machine. Also, when inserting the sewing needle into the fabric,
By sliding (single vibration) the sewing needle in the feeding direction, the fabric feeding mechanism is omitted.

However, if this simplification is too simple, children and toddlers will not be satisfied, and the toy sewing machine will be required to have the functions of the actual sewing machine.

(Problems to be solved by the invention) As one of the functions of such an actual machine sewing machine, the feed width is changed in the feed direction (forward feed) with respect to the sewing direction so that the embroidery sewing can be performed. There is one in which so-called zigzag sewing is performed by alternately feeding to the left and right in the feeding direction (lateral feed).

However, even if the structure of each of the forward feed mechanism and the lateral feed mechanism for the forward feed and the lateral feed is simplified, those means become extremely complicated to be incorporated in the housing of a small toy sewing machine, Since the operation is troublesome, it was extremely difficult. That is, the actual sewing machine is arranged on the front and back of the fabric.
Since the sewing is performed using two sewing threads, it is sufficient to control the movement of the material pressing portion in the front-back direction and the lateral direction. This is because the fabric must be fed in the forward and lateral directions with the suture thread submerged in the thread ring formed in. Therefore, it is not enough to use the front feed mechanism and the side feed mechanism of the actual sewing machine as they are or to simplify them.

Therefore, the present invention has been devised in view of the above existing circumstances, and a toy sewing machine of this kind which is a chain stitch method using one sewing thread can be easily incorporated into the inside thereof. Compact and simplified forward feed mechanism,
With no lateral feed mechanism, children and children can easily embroider,
Moreover, it is an object of the present invention to provide a toy sewing machine that is easy to handle and has few malfunctions.

[Means for Solving the Problem] (Means for Solving the Problems) In order to achieve the above-mentioned object, in the present invention, a sewing needle that moves up and down in a sewing portion by a drive source and a back and forth swing on a back surface of the sewing portion. A toy sewing machine that has a thread ring catching piece that catches a sewing thread inserted into a cloth by a sewing needle to form a thread ring, and forms a chain stitch with one sewing thread while fixing the thread ring on the back surface of the cloth. In, a feed dog base having a forward feed tooth and a lateral feed tooth is pushed forward while being lifted upward by the rotating drive transmission means to feed the dough forward, and the forward feed width is adjusted by the forward feed adjusting means. The forward feed mechanism and the reciprocating movement of the drive slider that is reciprocated in the left-right direction by the rotation of the drive transmission means are moved in the left-right direction by the lateral feed adjusting means that is interposed between the slide plate engaged with the feed dog base. Characterized in that arranged between the transverse feed mechanism for reciprocating.

Further, the sewing thread caught by the thread ring catching piece is pushed by the thread holding end of the pressing arm that swings along the swinging direction of the thread ring catching piece in the direction opposite to the catching direction to pull the thread ring. It is possible to provide a thread ring formation assisting mechanism that is substantially enlarged, and the thread pressing end can be configured to swing along the back surface of the cloth.

The forward feed mechanism forms a forward feed slot elongated in the front-rear direction on a slide base biased toward the rearward repulsion tendency. The forward feed slot has a substantially triangular shape rotated by the drive transmission means. The front feed cam may be fitted to the front feed cam, and the front feed cam may be brought into contact with the inner edge of the front portion of the front feed slot.

The forward feed adjusting means for steplessly adjusting the forward feed width from zero to the maximum allowable width is formed in a plate shape slidably supported in the left-right direction, and has a through hole formed in the slide base. The one end located at the insertion position may have an inclined edge that abuts the front edge of the insertion hole.

The transverse feed mechanism reciprocates the drive slider in the left-right direction via cam engagement by the rotation of the drive cylindrical cam that is rotated by the drive transmission means, and the reciprocating movement of the drive slider is provided through the transverse feed adjusting means. The slide plate can be configured to reciprocate in the left-right direction.

Then, the lateral feed adjusting means for continuously adjusting the lateral feed width from zero to the maximum permissible width engages the free end of the swing arm, which is appropriately swingably supported, with the drive slider to swing the swing arm support portion. Slide end is slidably fitted to the swing arm itself so that the free end extends to the free end, and the initial slide position of the driven slider is adjusted by the adjustment slider that is adjusted to adjust the swing between the driven slider and the slide long groove. The swing width of the swing arm and the reciprocating width of the slide plate can be changed and adjusted by setting the engagement position.

(Function) In the toy sewing machine according to the present invention, the cloth is sewn by operating the sewing thread supplied while being inserted and supported at the tip of the sewing needle.

At this time, in the thread ring formation assisting mechanism, first, the thread ring catching piece that swings forward in the catching direction in synchronization with the lowering of the sewing needle catches the sewing thread. Then, the sewing thread in the captured state is pushed to the side opposite to the capturing direction by swinging the thread pressing end of the pressing arm that swings below the sewing surface to the rear of the thread ring capturing piece. As a result, the thread ring formed and captured by the thread ring catching piece becomes substantially larger, and the descending sewing needle is reliably inserted into the thread ring.

Further, in the forward feed mechanism, the forward feed cam that is driven and rotated by the drive transmission means is in contact with the inner edge of the forward feed long hole of the slide base that supports the feed tooth base having the forward feed teeth. The rotation of the forward feed cam pushes the slide base upward while pushing it forward, and the pushing action pushes the cloth forward.

At this time, the operation of the forward feed adjusting means changes the contact state between the forward feed long hole and the forward feed cam. When the front feed cam stops contacting, the forward feed operation is not performed. When the rotation of the front feed cam makes contact with the front feed long hole, the forward feed width is adjusted by the degree of contact.

On the other hand, in the lateral feed mechanism, the drive slider is reciprocated in the left-right direction by the rotation of the drive cylindrical cam that is driven and rotated by the drive transmission means, and the reciprocal movement of the drive slider also reciprocates the lateral feed adjusting means itself. Let The reciprocating movement of the lateral feed adjusting means becomes the reciprocating movement of the driven slider to directly reciprocate the slide plate in the left-right direction.

At this time, in the operation of the lateral feed adjusting means, the adjustment slider is slid in the direction in which the driven slider is swung, and the engagement position of the driven slider that is slidingly engaged with the swing arm is changed. The change in the engagement position changes the swing width of the swing arm itself even if the drive slider reciprocates within a constant width. If the varying swing width is significantly swinging, the driven slider is reciprocally moved reciprocally, the fabric is laterally fed laterally through the slide plate, and the engaging position swings the swing arm. When it approaches the center of motion, the driven slider is reciprocated slightly to reduce the lateral feed width of the fabric. When the engagement position is at the swing center position of the swing arm, even if the swing arm is swung by the drive slider, the driven slider itself is in a completely stationary state, so that the cloth is not fed in the lateral direction.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

<Outline> Reference numeral 1 shown in the drawing denotes a sewing machine housing, and a vertical movement of a sewing needle 4 in a sewing portion via a motor 2 as a drive source and a drive transmission means 3 which are installed in the sewing machine housing 1, The thread loop catching piece 5 is swung, a large thread ring is formed by the thread ring formation assisting mechanism 20, the forward feeding operation of the fabric C is performed by the forward feeding mechanism 30, and the lateral feeding operation of the fabric C is performed by the horizontal feeding mechanism 40. I am doing it.

That is, the sewing needle 4 is supported by the sewing portion of the sewing machine housing 1 so as to be slidable in the vertical direction, and the vertical movement of the sewing needle 4 causes the driving force of the drive transmitting means 3 to be driven and rotated to the vertical movement means 6. It is performed by converting to vertical movement via. As shown in FIGS. 1 and 2, an example of the up-and-down moving means 6 is such that a rotating crank pin is slidably fitted to a connecting portion of a needle support rod that connects and supports the sewing needle 4.

The thread ring catching piece 5 is supported by, for example, a lower frame 8 installed in the lower portion of the sewing machine casing 1 in a state in which it can swing in the front-back direction below the sewing portion, and the swinging is the same. This is performed by swinging the driving force of the drive transmission means 3 back and forth via the swing means 7. An example of the swinging means 7 is
As shown in FIGS. 1, 2, and 7, the lower frame 8
The drive shaft 9 is rotatably supported on the drive shaft 9, and a cam pin protruding from the side surface of the thread ring catching piece 5 is slidably fitted into a half-moon shaped cam groove formed on a rotary plate fixed to the drive shaft 9. It is a thing.

Then, the sewing needle 4 that moves up and down through the stitch hole 11 formed on the sewn portion surface and the thread ring catching piece 5 that is swung at the lower position of the sewn portion to which the material C is fed are operating in synchronization. The predetermined cloth C held by the cloth presser 12 on the sewing portion is sewn in a chain stitch shape on the front and back of the cloth C by one sewing thread F.

<Formation of Chain Stitch-Sewing Operation> That is, the sewing needle 4 pierced through the cloth C together with the sewing thread F.
Is projected below the cloth C, the sewing thread F inserted and supported by the tip of the sewing needle 4 is hooked and caught by the thread ring catching claw at the tip of the swinging thread ring catching piece 5. The thread ring catching piece 5 after the catching catches the sewing thread F even when the sewing needle 4 is raised, and swings forward with the thread ring formed. Then, the sewing needle 4 again projects below the cloth C, is inserted into the thread ring by the thread ring catching claw, and when the thread ring is caught by the sewing needle 4, the thread ring catching piece 5 retreats and swings from the thread ring. Come off. After that, when the sewing needle 4 starts to be lifted while catching the thread ring, the thread ring catching piece 5 that moves forward and swings the sewing thread F at the lower position of the thread ring catches again and forms a chain stitch. At the same time, the thread loop is formed, and it waits in a trapped state. In this way, the first lowering of the sewing needle 4 captures the sewing thread F to form a thread ring, and the second lowering of the sewing needle 4 causes the sewing needle 4 to insert the sewing thread F into the thread ring to form a chain stitch. At the same time as forming an eye, the thread loop that becomes the next stitch is captured and formed again, and the thread loop of the next stitch is captured.
Forming secures the front seam.

It should be noted that the thread ring catching piece 5 has a needle insertion groove 5A formed along the up-down direction on the upper side surface thereof to allow the sewing needle 4 to descend.
Are reliably inserted into the thread ring captured on the upper part of the thread ring catching piece 5.

<Formation of Thread Ring> In order to ensure the capture of the formed thread ring, the sewing thread F which is in the state of being captured by the thread ring capturing claws of the thread ring capturing piece 5 is opposite to the capturing direction. A thread ring formation assisting mechanism 20 for pushing the alligator and substantially increasing the size of the thread ring is provided.

That is, as will be described later, this is because the forward feed of the cloth C is performed by the forward feed mechanism 30 capable of adjusting the feed width, and the sewing needle 4 only moves up and down, unlike the conventional cloth. Do not move back and forth along the C feed direction. The seams formed by not advancing or retracting are not sent forward. Then, even when the thread ring catching piece 5 that swings forms and catches the thread ring, the thread ring when viewed from above and below is not sufficiently large in the front-rear direction, and the sewing needle 4 that descends. This is to prevent the thread from being reliably inserted into the thread ring (see FIG. 4 (A)).

As shown in FIG. 5, the thread ring forming assisting mechanism 20 pivotally supports a pressing arm 21 swinging along the front and rear of the cloth C in the feeding direction on the back surface of the sewing surface, and the rear end of the pressing arm 21 is The drive shaft 9 is engaged with a swing pin 23 projectingly provided on a turntable 22 that is driven and rotated by, for example, a bevel gear. The rotation of the turntable 22 causes the thread holding end 24 at the front end of the pressing arm 21 to swing along the swinging direction of the thread ring catching piece 5, and the swing draws a flat elliptical shape. The sewing needle 4 that moves up and down is operated synchronously, and when the sewing needle 4 descends and penetrates the cloth C, it is not located at the penetrating portion. That is, when the sewing thread F is hooked by the thread ring catching claw of the thread ring catching piece 5 to form and catch the thread ring, the sewing needle 4 starts descending (fourth step).
(Refer to the figure (A)), the thread pressing end 24 advances in the direction opposite to the catching direction and pushes the upper part of the thread ring forward (refer to the figure (B)). In this state, the sewing needle 4 descends (see FIG. 11C) and is inserted into the thread ring, and when the thread ring is captured, the thread holding end 24
Is retracted from the penetrating portion of the sewing needle 4 to the cloth C, swings backward, returns to the original position, and stands by for the next operation (see (A) of the same figure).

Further, the thread pressing end 24 supports the cloth C from below when the sewing needle 4 penetrates the cloth C, and helps to surely sew the cloth C (see FIG. 4 (C)). That is, the sewing hole 4 is formed on the surface of the sewn portion so that the sewing needle 4 penetrates through the fabric C and the stitch hole 11 is enlarged so as to allow the forward feed and the lateral feed of the fabric C while the fabric C is still penetrated. Therefore, when the sewing needle 4 penetrates the fabric C, the fabric C itself sinks downward due to the large opening of the stitch hole 11, and the stitch may not be formed without penetrating the fabric C. . In order to prevent this, the thread pressing end 24 that swings below the stitch hole 11 is
The cloth C is supported from below when the sewing needle 4 penetrates the cloth C.

<Outline of zigzag sewing> In order to perform zigzag sewing on the material C,
The feed width of the forward feed of the fabric C by the operation of the forward feed mechanism 30 and the horizontal feed of the fabric C by the operation of the horizontal feed mechanism 40 are adjusted, and the forward feed or the horizontal feed, or either one of them is performed. This is realized by making it possible to select only the feed in the direction of.

That is, a feed dog base 31 having front feed teeth 32A arranged along the front-rear direction protruding on the upper surface of the sewing portion and lateral feed teeth 32B arranged also along the left-right direction is provided below the sewing surface in the front-rear direction. It is installed so that it can move back and forth and can reciprocate in the left and right directions. When the feed dog base 31 is moved forward, the front feed teeth 32A are projected on the sewing surface, and when the feed dog base 31 is reciprocated in the left-right direction, the horizontal feed teeth 32B are always projected on the sewing surface. It is a thing.

As shown in the drawing, the feed dog base 31 is provided on the lower frame 8
A slide base 33 that is slidable in the front-rear direction is arranged on the side surface of the front and rear, and a front and rear frame 34 having a substantially triangular standing frame is provided on the front and rear of the side of the slide base 33. It was made possible.

The front feed dog 32A is provided on either side of the upper surface of the feed dog base 31 in the front-rear direction, and on the side feed dog.
The 32B are arranged and formed in a pair in the front-rear direction along the left-right direction.

<Forward Feed Mechanism> The forward feed mechanism 30 that feeds the material C to be sewn forward is operated by the driving force of the drive transmission means 3, and the forward feed interval is from zero to a preset maximum allowable width. Up to stepless adjustment is possible.

That is, as shown in FIG. 6 and FIG. 7, the forward feed mechanism 30 has a forward feed length extended in the front-rear direction with respect to the slide base 33 urged by the pulling spring 35 so as to be resilient to the rear. A hole 36 is formed, and a substantially triangular forward feed cam 37 fixed to the drive shaft 9 is fitted into the forward feed slot 36, and the forward feed cam 37 is brought into contact with the inner edge of the front portion of the forward feed slot 36. Contact. The rotation of the forward feed cam 37 is to slide the slide base 33 in a circular shape when viewed from the side in the up / down direction and the front / rear direction through the forward feed elongated hole 36. The material C on the sewing surface is projected and sent forward, and is returned to the original position by the traction spring 35.

Further, the slide range of the slide base 33 itself can be adjusted steplessly from zero to the maximum allowable width by operating the forward feed adjusting means 38. That is, the forward feed adjusting means 38, as shown in FIG.
A through hole formed in the slide base 33 that is formed in a plate shape that is slidably supported in the left-right direction
It has an inclined edge 38A which is in contact with the front edge of the through hole 33A at one end which is inserted into the 33A.

Further, the other end of the forward feed adjusting means 38 is connected to a forward feed adjusting knob 39 which is exposed on the upper surface of the sewing machine housing 1 (first
(See FIG. 3, FIG. 3).

Therefore, when it is slid by the operation of the forward feed adjusting knob 39, its inclined edge 38A pushes the slide base 33 to push the slide base 33 itself to the forward position, and the forward feed cam 37 with respect to the inner edge of the forward feed slot 36 is formed. Even if the contact state is released and the forward feed cam 37 rotates, the slide base 33 does not slide. When the forward feed cam 37 is brought into contact with the inner edge of the forward feed long hole 36 by operating in the opposite direction to the maximum, the rotation of the forward feed cam 37 is transmitted as the sliding action of the maximum width of the slide base 33, and there is no step between them. Adjusted as slide width.

<Side feed mechanism> On the other hand, a side feed mechanism 40 that sends the material C to be sewn alternately to the left and right
Is operated by the driving force of the drive transmission means 3, and
The feed interval to the left and right can be adjusted steplessly from zero to a preset maximum allowable width.

As shown in FIGS. 8 and 9, the lateral feed mechanism 40 slides the feed tooth base 31 to the left and right by the driving force of the drive transmission means 3, and the sliding width thereof is the lateral feed adjustment means 45. It can be done by.

That is, as shown in the drawing, the drive slider 42 is reciprocated in the left-right direction by the rotation of the drive cylindrical cam 41 that is driven and rotated by the drive shaft 9, and the reciprocation of the drive slider 42 is performed by a lateral feed adjusting means 45 described later. The feed dog base
The slide plate 43 engaged with 31 is reciprocated in the left-right direction.

The drive slider 42 is formed in a substantially rectangular plate shape elongated in the left-right direction, is positioned above the slide plate 43, and is supported by the lower frame 8 so as to be slidable in the left-right direction. There is.

The upper surface of the drive slider 42 is the drive cylindrical cam 41.
A cam engagement 44 is provided on the outer peripheral surface, and this cam engagement 44 is, for example, a cam pin fitted in the cam groove of the drive cylindrical cam 41, which is provided so as to project from the top surface of the drive slider 42. Therefore, the rotation of the drive cylindrical cam 41 itself slides the drive slider 42 in the left-right direction via the cam groove and the cam engagement 44 by the cam pin.

Further, the slide plate 43 has a rising portion continuously provided via a substantially L-shaped plane portion extending to one end of a substantially rectangular plate-shaped main body elongated in the left-right direction, and the engaging end 43A at the upper end of the rising portion is formed as described above. It is engaged with the feed dog base 31. The engagement portion by the engagement end 43A, so that the feed tooth base 31 can be slid in the front-rear direction with respect to the feed tooth base 31,
The feed dog base 31 is formed with an elongated hole-like engaging hole having play in the front-rear direction.

In the lateral feed mechanism 40, the slide plate 43 also slides in the left-right direction via the drive slider 42 that slides in the left-right direction by the rotation of the drive cylindrical cam 41. Then, the feed dog base 31 slidably supported by the front and rear frames 34 is slid in the left and right directions.

<Transverse feed adjusting means> On the other hand, the transverse feed adjusting means 45 engages the free end of the swing arm 46 rotatably supported on the lower portion of the sewing machine casing 1 with the drive slider 42 to swing the swing arm 46. The slide arm 46 is slidably fitted in a slide long groove 49 provided in the swing arm 46 itself so that the free end extends from the portion. Then, the initial slider position of the driven slider 51 is adjusted to swing by the adjustment slider 53 that is adjusted,
The swinging width of the swing arm 46 and the reciprocating width of the slide plate 43 can be changed and adjusted by setting the engagement position between the 51 and the slide long groove 49.

Then, the swing arm 46 is swingably supported by, for example, a fixing pin 47 from the upper wall of the sewing portion of the sewing machine casing 1, and the swing supporting portion is located on the side of the drive slider 42 and the slide plate 43. (See FIGS. 8 and 10).
The free end of the swing arm 46 is connected to the drive slider 42.
Is slidably engaged with the other end of the drive lever 42 in the front-rear direction, and this slide engagement 48 includes, for example, a swing pin protruding from the upper surface of the free end of the swing arm 46 and the other end of the drive slider 42. It is fitted into a swing long hole formed in the opening. Therefore, the slide of the drive slider 42 moves the swing arm 46 via the slide engagement 48,
The fixed pin 47 is swung in the left-right direction.

Further, the slide long groove 49 of the swing arm 46 is formed in a concave shape on the back surface of the swing arm 46 (see FIG. 10),
A slide pin 52 protruding from the upper surface of the driven slider 51 is fitted therein. One end of the slide long groove 49 is provided with the fixing pin 47.
Is located on the swing center axis line of the swing arm 46 supported by the other end, and the other end is a position where the swing width of the swing arm 46 is sufficient to allow the slide plate 43 to have the maximum reciprocating width. . The slide pin 52 is provided so as to project on the upper surface of the L-shaped tip portion of the driven slider 51 formed in a plate shape that is substantially L-shaped in a plane, and the fitting position in the slide long groove 49 is the slide long groove 49. The free end of the swing arm 46, which is the other end, is slide-adjusted from the swing center position of the swing arm 46, which is one end. The driven slider 51 is swingably supported on the slide plate 43 with a washer or the like interposed.

Therefore, when the swing arm 46 is swung, the driven slider 51 itself is reciprocated in the left-right direction via the slide pin 52 fitted in the slide long groove 49.
The reciprocating width at this time corresponds to the swing range of the swing arm 46, and when the swing arm 46 is largely swung, the reciprocating width of the slide plate 43 via the driven slider 51 is also large, and the swing arm 46 swings completely. If not slide plate
43 is not reciprocated at all.

Thus, the adjustment of the reciprocating width of the slide plate 43 is obtained by the adjustment slider 53 that swings the driven slider 51. The adjusting slider 53 is appropriately supported in the lower portion of the sewing machine housing 1 so as to be slidable in the front-rear direction as shown in the figure, and one end of which is slidably engaged with the driven slider 51, and the other. The end is engaged with an inclined slit 55 formed in a lateral feed adjusting plate 54 that is slidably supported in the left-right direction. Also,
The other end of the lateral feed plate is connected to a lateral feed adjustment knob 56 that is exposed on the upper surface of the sewing machine housing 1 (see FIGS. 1 and 3).
See figure).

Therefore, when the lateral feed adjusting plate 54 is slid by the operation of the lateral feed adjusting knob 56, the inclined slit
55 pushes the adjustment slider 53 in either the front-back direction. When the adjustment slider 53 itself is pushed to the front position, the slide pin 52 slides the free end of the swing arm 46 to the center. Then, when the swing arm 46 is swung by the reciprocating movement of the drive slider 42,
With the swing, the driven slider 51 is reciprocated in the left-right direction corresponding to the swing range, and the slide plate 43 is also reciprocated.

When the adjustment slider 53 itself is pulled out to the rear position by operating in the opposite direction to the maximum, the slide pin 52 is slid to the swing center position of the swing arm 46. Then, the reciprocating movement of the drive slider 42 causes the swing arm.
Even if 46 swings, the swinging action is not transmitted to the driven slider 51 at all, and the feed dog base 31 is not reciprocated in the left-right direction.

In this way, the swinging action of the swing arm 46 is transmitted for the reciprocating motion of the drive slider 42 and for the reciprocating motion of the slide plate 43 via the reciprocating motion of the driven slider 51 itself. Alternatively, the slide plate 43 is not reciprocated by the driven slider 51 that does not reciprocate even when the swing arm 46 is swung, and the stepless reciprocating width is adjusted between them.

<Example of Use> In the present invention configured as described above, the sewing thread F supplied from the predetermined bobbin bobbin may be inserted into and supported by the distal end of the sewing needle 4 and operated. On the back surface of the cloth C, the thread ring catching piece 5 catches the sewing thread F to form a thread ring on the back surface of the fabric C, and the thread ring is fixed on the back surface of the cloth C by the second insertion of the sewing needle 4. Further, the thread ring catching piece 5 catches the sewing thread F again to form a thread ring. By repeating this, a chain stitch is formed and the cloth C is sewn.

At this time, the forward feed width of the fabric C is adjusted and set by adjusting the forward feed adjustment knob 39 of the forward feed adjusting means 38, while the lateral feed adjusting knob 56 of the lateral feed adjusting means 45 is set.
The feeding width of the cloth C in the left-right direction is adjusted and set by the adjusting operation of. As a result, it is possible to freely adjust and change the feed widths of the front feed and the horizontal feed of the cloth C, and to perform zigzag sewing.

[Advantage of Invention] Therefore, according to the present invention, the feeding widths of the forward feed and the lateral feed of the cloth C are adjusted by adjusting the forward feed mechanism 30 and the horizontal feed mechanism 40 mainly during the sewing work performed by children. It can be freely adjusted and changed, and various kinds of embroidery can be sewn even with so-called chain stitches using only one sewing thread F, and the fun of the toy sewing machine is further increased compared to conventional toy sewing machines that simply sew. can do.

That is, this is because the device according to the present invention moves up and down,
The sewing thread F that is inserted into the fabric C by swinging back and forth on the back side of the sewing section
And a thread ring catching piece 5 for catching the thread ring to form a thread ring, and a toy sewing machine that forms a chain stitch by one sewing thread F while fixing the thread ring on the back surface of the cloth C. The feed tooth base 31 having the lateral feed teeth 32B is pushed forward by the rotating drive transmission means 3 while being pushed upward, thereby feeding the material C forward, and the forward feed width is adjusted by the forward feed adjusting means 38. The drive slider 42 is reciprocated in the left-right direction by the rotation of the forward feed mechanism 30 and the drive transmission means 3, and the reciprocating movement of the drive slider 42 is applied to the feed dog base 31 by the lateral feed adjusting means 45 interposed. This is because the horizontal feed mechanism 40 that reciprocates the slide plates 43 that are fitted together in the left-right direction is arranged.

In the thread ring formation assisting mechanism 20, the thread pressing end 24 of the pressing arm 21 swings back and forth in synchronization with the thread ring catching piece 5 to catch the thread ring during the sewing operation. Is pushing backwards. That is, when the thread ring catching piece 5 catches the sewing thread F, the sewing thread F in the caught state is separated from the catching direction by the thread pressing end 24 swinging rearward of the thread ring catching piece 5. Is pushed by. As a result, the thread ring formed and caught by the thread ring catching piece 5 is substantially substantially large in the front-rear direction when viewed from above and below, so that the descending sewing needle 4 is reliably inserted into the thread ring. Therefore, it is possible to form a stitch even if the cloth C is not fed forward at all. Therefore, the descending sewing needle 4 inserts the sewing thread F into the thread ring to form a chain stitch, and at the same time, catches and forms a thread ring to be the next stitch, and catches the next thread ring. The formation can fix the front seam.

Further, the thread pressing end 24 of this thread ring forming assisting mechanism 20 is
Since it oscillates along the back surface, the stitch holes 11 on the surface of the sewing portion are made substantially smaller to support the back surface of the cloth C, and the cloth C is prevented from sinking when the sewing needle 4 penetrates the cloth C. To ensure the formation of seams.

Further, the feed dog base 31 on which the material C to be sewn is set
Has a front feed dog 32A which is arranged along the front-back direction and which protrudes to the upper surface of the sewing section surface, and a horizontal feed tooth 32B which is also arranged along the left-right direction, and can move forward and backward below the sewing surface. Moreover, since the fabric C is arranged so as to be reciprocable in the left-right direction, by setting the cloth C on the feed dog base 31, it is possible to feed the fabric C in each direction individually or in combination. That is, since the feed dog base 31 is forward-fed by the forward feed mechanism 30 and laterally fed by the lateral feed mechanism 40, it is possible to feed each direction individually or in combination, and, as in the conventional case, Since it is not necessary to vibrate the sewing needle 4 through the cloth C in a penetrating state, the sewing needle 4 can be fed in each direction separately from the sewing operation.

Then, the forward feed adjusting means 38 has a forward feed mechanism 37 which is operated to forward feed the cloth C by the adjusting operation thereof, and the forward feed cam 37 driven by the rotation of the drive transmission means 3 is a slide base. Since the state of contacting the front feed long hole 36 of 33 is changed, the feed width can be adjusted steplessly from zero to the maximum allowable width. That is, when the contact state between the forward feed slot 36 and the forward feed cam 37 is changed, when the contact is no longer made, the forward feed operation is not performed, and the rotation of the forward feed slot 37 causes the forward feed slot 37 to rotate. When they are in contact with each other, the advance width is adjusted depending on the degree of contact.

On the other hand, the lateral feed adjusting means 45 is
In the lateral feed mechanism 40 operating to laterally feed the cloth C in the left-right direction, the swing width of the swing arm 46 by the drive slider 42 reciprocating by the rotation of the drive transmission means 3 is transmitted to the slide plate 43 as it is. Or the transmission is not transmitted, the feed width can be adjusted steplessly from zero to the maximum permissible width.

That is, when the engagement position of the driven slider 51 that is slidingly engaged with the swing arm 46 is changed, even if the drive slider 42 reciprocates within a certain width, the swing arm
The swing width of 46 itself changes. When the changing swing width is largely swinging, the cloth C is largely laterally fed in the lateral direction, and when the engaging position approaches the swing center position of the swing arm 46, the swing width becomes smaller. And reduce the feed width of dough C. And the engagement position is swing arm
When the swing arm 46 is in the swing center position, the cloth C cannot be fed in the lateral direction even when the swing arm 46 swings, and the lateral feed width can be adjusted between them.

Moreover, the forward feed and the lateral feed are both performed by the forward feed mechanism 3 driven by the driving force from the drive transmission means 3.
0, the lateral feed mechanism 40, and these mechanisms are small in size and can be easily incorporated in the sewing machine housing 1. Moreover, the feed width can be easily adjusted by operating the forward feed adjusting means 38 incorporated in the forward feed mechanism 30 and the lateral feed adjusting means 45 also incorporated in the lateral feed mechanism 40, and the operation is easy even for children. .

As described above, according to the present invention, as a toy sewing machine of this type, which is a chain stitching method using a single sewing thread, a compact and simplified forward feed mechanism and lateral feed mechanism can be easily incorporated in the interior thereof. Also, even children can easily sew embroidery, and it is easy to handle.
It has excellent effects such as few failures.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a partially cutaway front view, Fig. 2 is a partially cutaway side view, Fig. 3 is a plan view, and Figs. 4 (A) to 4 (C). Is a side view of an essential part for explaining the operation of the thread ring formation assisting mechanism, FIG. 5 is a plan view thereof, FIG. 6 is a plan view of an essential part of the forward feed mechanism, and FIG.
FIG. 8 is a plan view of the essential parts of the lateral feed mechanism, FIG. 9 is a front view of the essential parts of the same, and FIG. 10 is a sectional view of the essential parts of the lateral feed adjusting means. C ... Fabric, F ... Sewing thread, 1 ... Sewing machine case, 2 ... Motor, 3 ... Drive transmission means, 4 ... Sewing needle, 5 ... Thread ring catching piece, 5A ... Needle insertion groove, 6 ...... Up and down moving means, 7 ...... Rotating means, 8 ...... Lower frame, 9 ...... Drive shaft, 11 ...... Stitch hole, 12 ...... Presser foot, 20 ...... Thread ring forming assist mechanism, 21 ...... Presser arm, 22 ...... Rotating plate, 23 ...... Swing pin, 24 ...... Thread presser end, 30 ...... Forward feed mechanism, 31 ...... Feed dog base, 32A ...
… Front feed tooth, 32B …… Side feed tooth, 33 …… Slide base, 33A …… Through hole, 34 …… Front and rear frame, 35 …… Tension spring, 36 …… Front feed slot, 37 …… Front feed Cam, 38 ... Forward feed adjusting means, 39 ... Forward feed adjusting knob, 40 ... Lateral feed mechanism, 41 ... Drive cylindrical cam, 42 ... Drive slider, 43 ...
… Slide plate, 43A …… Engagement end, 44 …… Cam engagement, 45 …… Side feed adjusting means, 46 …… Swing arm, 47
...... Fixing pin, 48 …… Sliding engagement, 49 …… Slide long groove, 51 …… Slider slider, 52 …… Slide pin, 53…
… Adjustment slider, 54 …… Transverse feed adjustment plate, 55 ……
Inclined slit, 56 ... Horizontal feed adjustment knob.

Claims (7)

[Scope of utility model registration request] 1. A sewing needle that moves up and down at a sewn portion by a drive source, and a thread ring catching piece that swings back and forth on the back surface of the sewn portion and that catches a sewing thread inserted into the material by the sewing needle to form a thread ring. In a toy sewing machine that has a chain stitch with one sewing thread while fixing the thread ring on the back surface of the cloth, a forward feed dog,
A forward feed mechanism in which a feed tooth base having a lateral feed tooth is pushed forward by lifting the feed tooth base by rotating drive transmission means to feed the dough forward, and the forward feed width is adjusted by the forward feed adjusting means, and a drive mechanism. A lateral feed mechanism for laterally reciprocating the slide plate engaged with the feed dog base by the intervening lateral feed adjusting means for the reciprocal movement of the drive slider which is reciprocated in the left and right direction by the rotation of the transmission means. Toy sewing machine characterized by arranging and. 2. A sewing thread in a state of being caught by a thread ring catching piece is pushed to the side opposite to the catching direction by a thread holding end of a pressing arm which swings along the swinging direction of the thread ring catching piece,
The toy sewing machine according to claim 1, further comprising a thread ring formation assisting mechanism for substantially enlarging the thread ring. 3. The toy sewing machine according to claim 2, wherein the thread pressing end swings along the back surface of the cloth. 4. A front feed mechanism is provided with a front feed elongated hole elongated in the front-rear direction on a slide base biased by a backward elastic tendency, and the front feed elongated hole is rotated by a drive transmission means. 4. The toy sewing machine according to claim 1, wherein a front feed cam having a substantially triangular shape is fitted and the front feed cam is brought into contact with the inner edge of the front portion of the front feed slot. 5. The forward feed adjusting means is formed in a plate shape slidably supported in the left-right direction, and has a penetrating hole at one end located at a penetrating hole formed in the slide base. 2. An inclined edge that abuts a front edge of the insertion hole.
The toy sewing machine according to any one of 4 to 4. 6. A transverse feed mechanism reciprocates the drive slider in the left-right direction via cam engagement by the rotation of a drive cylindrical cam that is driven and rotated by the drive transmission means, and reciprocates the drive slider in the transverse feed adjusting means. The toy sewing machine according to any one of claims 1 to 5, wherein the slide plate is reciprocally moved in the left-right direction by interposing a tongue. 7. The lateral feed adjusting means engages a free end of a swing arm, which is oscillatably supported, with a drive slider.
The swing arm is slidably fitted into the slide long groove provided on the swing arm itself so that the free end of the swing arm reaches the free end, and the initial swing position of the driven slider is swing adjusted by the adjustment slider that is adjusted. 7. The toy sewing machine according to claim 1, wherein the swing width of the swing arm and the reciprocating width of the slide plate can be changed and adjusted by setting the engagement position between the driven slider and the slide long groove.