JP2000170071A - Sewing machine imparted with cord-attaching function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a cord-supplying member to elevate to a retreating position by one touch. SOLUTION: This sewing machine imparted with a cord-attaching function, inserting a cord-supporting rod 22 joined as not capable of rotating relatively with a joining metal tool 41 and a rotation-stopping rod 40 into a needle rod- guiding hole and a supporting rod guiding groove respectively as freely ascendable and descendible, installing a cord-supplying member 23 at the lower end of the cord-supporting rod 22, and installing a supplying hole 36 for inserting the cord for supplying it on a cloth and also inserting an adjacent needle 4, is provided by installing a projected part 22c at the side surface of the cord- supporting rod 22 and a pole plunger 43 for hooking with the projected part 22c at the retreating position by ascending the cord-supporting rod 22 and rotation-stopping rod 40 and holding the cord-supporting rod 22 and rotation- stopping rod 40 at the retreating position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine provided with a so-called cording function for forming a pattern by sewing various cords for decoration on a cloth with a thread.

[0002]

2. Description of the Related Art The present applicant has previously disclosed Japanese Patent Application Laid-Open No. Hei 8-1702.
In Japanese Patent No. 64, a new sewing machine is proposed in which the supply hole of the cord supply member can be matched with the needle descending position with high accuracy without requiring much skill, labor, and time.

As shown in FIGS. 12 and 13, the sewing machine includes a plurality of needle bar guide holes 82 arranged in a sewing machine head body 81 at predetermined intervals in an arc shape.
3 is inserted so as to be able to ascend and descend, and a presser foot support rod 89 is inserted into each of a plurality of support rod guide grooves 88 which are juxtaposed at regular intervals in the sewing machine head body 81 so as to be able to ascend and descend. 83 and the presser foot support rod 89 are relatively vertically movable and non-rotatably connected. And
This sewing machine has a needle bar guide hole 8 as a cording mechanism.
2 in place of the needle bar 83, a cord support rod 92 is inserted so as to be able to move up and down, and one of the support rod guide grooves 88 is inserted into the presser foot support rod 8.
9, a non-rotating bar 93 is inserted so as to be able to move up and down, and the cord supporting bar 92 and the non-rotating bar 93 are relatively non-rotatably connected to each other. A cord supply member 94 is provided extending toward the lowered position of the needle 84 attached to the cloth supply member 94. The cord supply member 94 is supplied through the cord 86 onto the cloth 87 and a supply hole (not shown in the drawing) through which the adjacent needle 84 is inserted. ).

In this sewing machine, when no cording is performed, the cord supply member 94 can be raised to the retracted position as follows. That is, the cord supporting rod 92 and the detent rod 93 are slightly lifted from the state shown in FIG.
3 comes off from the support rod guide groove 88 and the sewing machine head body 81
From the first state until the detent rod 93 hits the side surface 97a of the regulating portion 97 provided on the sewing machine head body 81 from the first state.
2 and the detent rod 93 are rotated about the axis of the cord support rod 92 to bring the cord supply member 94 into a second state in which the adjacent needle 84 is displaced from the lowered position. And raise the non-rotating rod 93 to the rising end,
As shown in FIG. 13, the cord supply member 94 is raised to the retracted position by setting the rotation preventing rod 93 to the third state in which it has climbed on the upper surface 97 b of the regulating portion 97.

[0005]

However, from the first state to the third state, the cord support rod 92 and the detent are fixed around the axis of the cord support rod 92 inserted into the needle bar guide hole 82. The rod 93 must be rotated. Therefore, a sufficient space is provided for the needle bar guide hole 82.
Must be around. Therefore, for example, as shown in FIG. 1, the space between the needle bars is narrow, and the left space of the left end needle bar and the right space (not shown) of the right end needle bar are also narrow. Can not be used.

Further, when the adjacent needle 84 is lowered while the code supply member 94 is in the first and second states on the way to the retreat position, the supply hole of the code supply member 94 is lowered. Is displaced from the lowered position of the needle 84, the needle 84 may interfere with the cord supply member 94.

Further, in order to raise the cord supply member 94 to the retracted position, it is necessary to perform three steps of operations from the first state to the third state, which is troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a cording function even when the space around the needle bar guide hole is narrow, and to provide a cord supply member in the middle of being brought to the retracted position. An object of the present invention is to provide a sewing machine provided with a cording function in which a needle next to the needle does not interfere with the cord supply member.

Another object of the present invention is to provide a sewing machine provided with a cording function that can raise a cord supply member to a retracted position with one touch.

Still another object of the present invention is to provide a sewing machine provided with a coding function that automatically cancels the evacuation state even if the evacuation state is forgotten and the coding is started while forgetting to cancel the evacuation state. is there.

It is still another object of the present invention to provide a sewing machine which can provide a coding function to an existing sewing machine without significantly modifying it.

[0012]

To achieve the above object, a sewing machine provided with a coding function according to the present invention is provided with a needle bar instead of a needle bar in one of a plurality of needle bar guide holes provided in a sewing machine head main body. The cord support rod is inserted so as to be able to move up and down, and a detent rod is inserted into one of a plurality of support rod guides provided on the sewing machine main body so as to be able to move up and down in place of the presser foot support rod. A code supply member extending toward a lower position of a needle attached to a lower end of an adjacent needle bar, provided at a lower end of the cord support rod; In a sewing machine in which a member is provided with a supply hole through which a needle is inserted through a cord while being supplied onto a cloth, the cord support rod and the detent rod are rotated about the axis of the cord support rod. Without ascending and descending The cord support bar or the locking portion is provided with a portion to be engaged on the side surface of the detent rod, the cord support bar and the detent are engaged with the engaged portion at a retracted position where the detent rod is raised, An engaging member for holding the cord support bar and the detent bar at the retracted position is provided on the sewing machine head main body.

The "evacuation position" is not particularly limited, but
It refers to a position where the cord support bar and the detent bar are raised to a height where the cord supply member does not interfere with the sewing frame on which the fabric is stretched.

Although the engaged portion and the engaging member are not particularly limited, the following embodiments can be exemplified. (1) The engaged portion is a convex portion formed on a side surface of the cord support bar or the detent bar, and the engaging member is
A mode in which a tip urged in a protruding direction is configured to be detachably engaged with the projection.

(2) The engaged portion is a convex portion formed on a side surface of the cord support bar or the rotation preventing bar, and the engaging member is configured such that a tip thereof can be manually engaged with and disengaged from the convex portion. An aspect configured to engage.

In the retracted position, the force for lowering the needle bar is greater than the force acting to hold the cord support bar and the detent bar in the retracted position. Can be

[0017] The engagement member may be provided via a mounting block that is detachably attached to the sewing head body.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 9, a sewing head body 1 of an embroidery sewing machine has a movable block 19 supported on its front surface so as to be slidable in the left-right direction. In the movable block 19, a plurality of needle bar guide holes 2 are arranged in a line at regular intervals, and the needle bar 3 is inserted into each of the needle bar guide holes 2 so as to be able to move up and down. Reference numeral 19a denotes an upper surface of the movable block 19 in which the needle bar guide hole 2 is opened. A needle 4 is attached to a lower end of the needle bar 3 by a needle stopper 5 and a screw 6. 20 is a needle plate below the needle 4 and 21 is a needle plate 2
This is a needle hole formed at zero. The upper end of the needle bar 3 is selectively engaged with a needle bar tapper 7 driven up and down by a driving means (not shown) so that the engaged needle bar 3 is moved up and down.

Immediately in front of each needle bar guide hole 2 of the movable block 19, a plurality of support bar guide grooves 8 are juxtaposed at regular intervals, and each of the support bar guide grooves 8 has a presser foot support rod. 9 is inserted so as to be able to move up and down. Reference numeral 19b denotes a lower surface of the movable block 19 in which the support rod guide groove 8 is open, and is lower than the upper surface 19a. The presser foot 10 is attached to the lower end of the presser foot support rod 9. The lower part of the needle bar 3 is inserted into the needle bar insertion hole 11 on the upper part of the presser foot 10 so as to be movable up and down relatively, and the needle 4 can be inserted into the through hole 12 on the lower part of the presser foot 10. I have.

The needle bar 3 and the presser foot support bar 9 which are paired in the front and rear are relatively vertically movable and non-rotatably connected as follows. That is, the first connecting fitting 13 is fixed to the upper end of the needle bar 3, and the holding portion 14 provided at the front of the fitting 13 vertically moves the upper end of the presser foot supporting rod 9 relatively up and down. By holding as much as possible, the rotation of the needle bar 3 is prevented. On the other hand, a second connecting fitting 15 is fixed to the center of the cloth presser supporting rod 9, and the center of the needle bar 3 is inserted into a hole 16 provided at the rear of the fitting 15 so as to be relatively vertically movable. Thus, the rotation of the presser foot support rod 9 is prevented.

A first spring 17 having a strong elasticity is interposed between the first fitting 13 and the second fitting 15, and when the needle bar strike 7 lowers the needle bar 3, The presser foot support rod 9 is also lowered via one spring 17 and the second coupling fitting 15. Further, a second spring 18 having a low elasticity is interposed between the second coupling fitting 15 and the movable block 19.

In this embodiment, a cording mechanism 31 is provided instead of the leftmost needle bar 3 and the presser foot support bar 9. The cord attaching mechanism 31 is provided at the leftmost needle bar guide hole 2.
A cord support rod 22 inserted so as to be able to move up and down instead of the needle bar 3, a detent rod 40 inserted so as to be able to move up and down instead of the cloth presser support rod 9 in the leftmost support rod guide groove 8, A coupling fitting 41 for coupling the upper end of the cord support bar 22 and the upper end of the rotation preventing bar 40, and a mounting block 32 provided on the lower left surface of the movable block 19 and having the cord support bar 22 inserted through the insertion hole 33a. And a cord supply member 23 provided at a lower end of the cord support bar 22.

The interval between the plurality of needle bar guide holes 2 is originally 1
Strictly controlled with a high precision of the order of / 100 mm. Thus, if the cord support bar 22 is inserted into one of the needle bar guide holes 2 so as to be able to move up and down instead of the needle bar 3, the code alone can be used. The distance between the support bar 22 and the adjacent needle bar 3 is determined with high precision. Further, the cord support bar 22 is non-rotatably connected to the detent bar 40 inserted into one of the support bar guide grooves 8.

As shown in FIGS. 4, 6, 8 and 9, the cord support bar 22 has a first guide surface 22a which is formed in a plane by omitting a part of its side surface, and which is long in the vertical direction. And a short second guide surface 22b. The two guide surfaces 22a and 22b are provided in a line at a short interval above and below. Since the side surface is left without being omitted between the two guide surfaces 22a and 22b, a convex portion 22c as an engaged portion relative to the two guide surfaces 22a and 22b is formed. As shown in FIG.
c is a chamfered portion 22d
Is provided.

The detent bar 40 is formed in a square bar shape. For this reason, since both sides of the detent rod 40 and the support rod guide groove 8 are in contact with each other, wear is small. Also, the cloth 50 at the lower end of the cord supply member 23 is
A channel-shaped locking member 55 as shown in FIG. The locking member 55 is attached to the detent rod 40 so as to be adjustable up and down by a screw 57 inserted through a long hole 56 on the front surface, and the lower end thereof is mounted on the lower step surface 19b.

The fitting 41 has holes 41a and 41b provided at the front and rear portions thereof, respectively.
The upper end of the detent rod 40 and the upper end of the cord support rod 22 are fixed to 41b by screws 42, 44, respectively. As described above, the cord support bar 22 and the detent bar 40 are configured to be able to move up and down without rotating about the axis of the cord support bar 22.

As shown in FIG. 5, the mounting block 32 is provided with a block main body 33 provided with an insertion hole 33a, and extends from the upper part of the block main body 33 to the left side of the upper part of the main body to the side surface of the movable block 19. The connecting portion 34 includes a support plate portion 35 extending upward from the left end of the connecting portion 34 along the side surface of the movable block 19. Support plate 3
Reference numeral 5 denotes a screw 29 which is detachably attached to the left side wall of the movable block 19. On the left side of the block body 33,
A female screw hole 33b communicating with the insertion hole 33a is formed, and a ball plunger 43 is screwed into the female screw hole 33b. The ball plunger 43 is screwed into the ball plunger 43 so that the ball 43a at the tip thereof can be engaged with the projection 22c and does not touch the guide surfaces 22a and 22b. The ball plunger 43 is fixed with screws 47 so that the screwing position does not shift. The ball 43a at the tip of the ball plunger 43 faces one of the first guide surface 22a and the second guide surface 22b according to the vertical position of the cord support bar 22. Specifically, the ball 43a of the ball plunger 43 is in an operation state of performing the coding shown in FIG. 1, FIG. 2, FIG. 4 and FIG. In the first guide surface 22).
In the retreat state where no cording is performed as shown in FIG. 6 and FIG. 8B (hereinafter, the position of the cord supply member at this time is referred to as a “retreat position”), the projection 22c is engaged. The second guide surface 22b is opposed to the second guide surface 22b. That is, the ball plunger 43 is
2 is an engaging member that engages with the convex portion 22c as the engaged portion at the retracted position where the rotation stopper 2 and the rotation preventing rod 40 are raised, and holds the cord support rod 22 and the rotation preventing rod 40 at the retracted position. .

As shown in FIG. 6, the ball plunger 43 has a bottomed tubular body 43c, a spring 43b mounted inside the tubular body, and a front end opening of the bottomed tubular body 43c by the spring 43b. And a ball 43a biased in a protruding direction from the portion. The outer peripheral edge of the opening of the bottomed cylindrical body 43c is tapered in a substantially conical shape,
The inner periphery of the opening is squeezed so that the ball 43a does not come off.

The cord supply member 23 includes a cord support rod 22
At the lower end of the needle 4 so as to extend toward the lowered position of the next (ie, second from left) needle 4. As shown in FIG. 4, the cord supply member 23
A mounting portion 25 having a mounting hole 24 into which the lower end of the second 2 enters;
A connecting portion 26 extending downward from a side portion of the mounting portion 25 and a small block-shaped supply portion 27 extending laterally from a lower portion of the connecting portion 26 are attached to the lower end of the cord support rod 22 with screws 28. ing. The supply part 27 has a supply hole 36 penetrating vertically and an introduction hole 3 communicating with the supply hole 36 from the front surface.
0 is formed.

A plate-like code guide 37 is integrally formed on the front side of the mounting portion 25, and guide holes 38 and 39 are provided at the upper end and the lower end of the code guide 37, respectively. An operation plate 37a extending in the horizontal direction for sliding the code support bar 22 up and down is fixed to the code guide portion 37 with screws 37b.

A spring 45 is interposed between the movable block 19 and the mounting portion 25, and urges the cord support bar 22 and the cord supply member 23 downward. The spring 45 has an elastic force of 200 g weight and 700 g weight in the operating state and the retracted state, respectively. When performing the cording, the locking member 55 is in contact with the lower surface 19b of the movable block 19 as shown in FIGS. 1, 2 and 4, and the cord supply member 23 is always moved to a slightly higher descending end from the fabric. It functions as a positioning member to be positioned. When the cord supply member 23 receives an upward external force, the cord supply member 23 can rise from the lower end against the bias of the spring 45.

When the cording is performed in this manner (operating state), as shown in FIGS. 4 and 8A, the ball 43a at the tip of the ball plunger 43 is opposed to the first guide surface 22a. When no coding is performed, FIG.
As shown in FIG.
2 and raise the ball 43 at the tip of the ball plunger 43.
a moves over the convex portion 22c of the cord support rod 22 toward the second guide surface 22b (retracted state).

Here, the chamfered portion 2 is located at the upper edge angle of the convex portion 22c.
Since 2d is provided, it is possible to get over the convex portion 22c from the first guide surface 22a side to the second guide surface 22b side with a relatively weak force. On the other hand, since the lower edge angle of the convex portion 22c is not chamfered, it is necessary to apply a relatively strong force to get over the convex portion 22c from the second guide surface 22b side to the first guide surface 22a side. . Specifically, the ball plunger 43 having a holding force such that the strong force becomes 1300 g weight is used. The holding force of the ball plunger is a force for lowering the cord support bar 22 and the detent bar 40 from the retracted position (the force for urging the cord support bar 22 downward by the spring 45, the cord support bar 22, and the detent bar 40). , The force applied to the joint fitting 41 and the cord supply member 23 with the gravitational force). For this reason, once the ball 43a at the tip of the ball plunger 43 relatively moves toward the second guide surface 22b, that state is maintained unless a force for urging the cord support bar 22 downward is applied. ing.

The force acting to hold the cord support bar 22 and the detent bar 40 in the retracted position as described above is the same as the force by which the ball plunger 43 retains the cord support bar 22 and the detent bar 40 in the retracted position. , The spring 45, the gravity of the cord support bar 22, etc., is a difference force from the force for lowering the cord support bar 22 and the detent rod 40 from the retracted position. In the present sewing machine, the lowering force of the needle bar 3 is configured to be larger than this force.

A base portion 53 is attached to the lower end of the cloth presser support bar 9 adjacent to the detent bar 40 (that is, the second from the left), and the cord support bar 22 is attached to the base portion 53.
The swinging member 46 extending toward the rear position of is screwed. If you do not code,
Instead of the swing-out member 46, a cloth holding portion (not shown) extended to the lower end side of the needle 4 is fixed by a screw 54.

On the front surface of the movable block 19,
A guide plate 58 bent in an L shape is screwed to the left of the cord support bar 22. The guide plate 58 has a guide hole 58 a for guiding the cord 52 to the guide hole 38 on the upper end side of the cord guide 37.

Further, as shown in FIG. 3, behind the needle 4, an upper thread 51 cut by a thread cutter (not shown) is provided.
An upper thread hooking member 48 for hooking the upper thread 51 and guiding it backward, and an upper thread holder 49 for holding the upper thread 51 are provided. In the present embodiment, the cording member is arranged so as not to be located behind the second needle 4 from the left, so that the hooking and holding action of the upper thread 51 is not disturbed.

To perform coding using the embroidery sewing machine provided with the coding function configured as described above,
First, the fabric 50 is spread on an embroidery frame (not shown) to
The upper thread 51 sent from above is passed through the needle 4. Further, the cord 52 sent from above is connected to the guide plate 5.
8 guide hole 58a → the guide hole 38 of the code guide portion 37 →
It passes through the through hole 46a of the swinging member 46, the guide hole 39 of the cord guide 37, the introduction hole 30 of the supply unit 27, and the supply hole 36 of the supply unit 27 in this order. In this state, when the driving means is operated to move the needle bar 3 up and down, the cord 52 passing through the supply hole 36 is moved.
The cord 52 is sewn to the fabric 50 by the upper thread 51 and the lower thread (not shown) supplied from the shuttle.

At this time, the fabric 50 at the lower end of the supply unit 27 is
Is optimally set so as to fit the place where the cord 52 is sewn without intersecting,
The upper thread 51 and the lower thread can be sewn well without coming off. Also, at a place where the cord 52 is sewn in a double or more crossing manner, even if the already sewn cord 52 hits the supply section 27 passing therethrough again, the cord supply member 23 is biased by the spring 45. Therefore, the cord 52 can be sewn well without being caught by the supply section 27.

The swing-out member 46 moves up and down together with the presser foot support bar 9 which moves up and down in conjunction with the needle bar 3, acts just like a balance of the sewing machine, and converts the cord 52 passed through the through-hole 46a into a cord. It is sent to the supply member 23. Therefore,
Excessive tension can be prevented from being applied to the cord 52 supplied to the cord supply member 23, and the cord 52 can be sewn in a natural state.

When coding is not performed, FIG.
The operation plate 37 is changed from a state in which the coding shown in FIG.
a by hand, and raise the cord supporting rod 22 and the detent rod 40 to thereby move the ball plunger 4
The ball 43a at the three ends moves over the convex portion 22c and relatively moves from the first guide surface 22a side to the second guide surface 22b side. Then, as shown in FIG. 8 (b), the ball 43a at the tip of the ball plunger 43 engages with the lower edge angle of the convex portion 22c of the cord support rod 22, and is in a retracted state.

In order to release the retracted state and set the operating state, the operation plate 37a is moved downward by hand, and the cord supporting rod 22 and the detent rod 40 are lowered. 43a gets over the convex portion 22c and moves from the second guide surface 22b to the first guide surface 22c.
move relatively to a. Then, since the cord support bar 22 and the rotation preventing bar 40 are urged downward by the spring 45, they descend to the bottom dead center position.

It should be noted that if the user forgets to release the evacuation state,
Even if coding is started, the evacuation state is automatically released and the operation state is set. More specifically, first, when coding is started in the retracted state as shown in FIG. 9A, the needle bar 3 and the needle 4 start to descend. Then, as shown in FIG. 3B, the needle 4 is inserted through the supply hole 36, the lower end of the needle bar 3 contacts the cord supply member 23, and urges the member downward. As described above, the lowering force of the needle bar 3 is configured to be larger than the force acting to hold the cord support bar 22 and the detent bar 40 at the retracted position, and therefore, the ball plunger 43 Ball 43a moves relatively from the second guide surface 22b side to the first guide surface 22a side over the convex portion 22c. For this reason, as shown in FIG.
As a result, the cord support bar 22 and the detent bar 40 urged downward move down to the lower end position, and the retracted state is released and the operating state is established. Note that once in the operating state, the lower end of the needle bar 3 may not contact the cord supply member 23 even if the needle bar 3 is driven up and down, as shown in FIGS. Absent.

As described above, according to the present invention, the cord supporting rod 22 and the rotation preventing rod 40 are configured to be able to move up and down without rotating about the axis of the cord supporting rod 22 so that the cord supporting rod 22 The following effects can be obtained because the anti-rotation bar 40 is held at the raised retracted position.

(1) In order to put the cord attaching mechanism 31 in the retracted state, the cord supporting rod 22 and the detent rod 40 need only be lifted as they are. Since there is no need to rotate, it can be provided even if the space around the needle bar guide hole 2 is narrow.

(2) The supply hole 3 of the cord supply member 23 in either the retracted position or in the middle of reaching the retracted position.
The needle 6 does not deviate from the lowered position of the needle 4, and unlike the related art, there is no possibility that the needle 4 interferes with the cord supply member 23.

Further, a convex portion 22c as an engaged portion is provided on the side surface of the cord support bar 22, and the cord support bar 22 and the rotation preventing bar 40 are removably engaged with the convex portion 22c at the retracted position where the raised portions are raised. In addition, since the ball plunger 43 as an engaging member for holding the cord support bar 22 and the rotation preventing bar 40 at the retracted position is provided on the movable block 19 of the sewing machine head body 1, the following effects can be obtained. .

(A) To put the cord supply member 23 in the retracted state or to release the retracted state to the operating state, the operation plate 37a is moved upward or downward by hand, and the ball at the tip of the ball plunger 43 is moved. It is only necessary to engage or disengage the projection 43c with the projection 22c, and the operation can be performed with one touch. Therefore, unlike the conventional case, there is no need to perform a three-stage operation.

(B) Even if cording is started while the retracted state is forgotten, the lower end of the needle bar 3 pushes down the cord supply member 23 when the needle bar 3 and the needle 4 are lowered, and the ball plunger 43 Since the engagement between the ball 43a at the tip and the projection 22c is released, the retracted state is automatically released and the operating state is brought about, and the needle bar 3 and the needle 4 may interfere with the cord supply member 23 to damage them. There is no.

Further, since the ball plunger 43 as an engaging member is attached to the movable block of the sewing machine head via the detachable mounting block 32, the ball plunger 4 is attached to the existing movable block 19.
In order to provide 3, it is only necessary to provide a female screw hole for screwing the support plate portion 35 of the mounting block 32 in the existing mounting block 32, and it is not necessary to largely modify the existing movable block 19.

Next, FIGS. 10 and 11 show a sewing machine provided with a coding function according to the second embodiment.
The height adjusting screw 71 is provided on the mounting block 70 instead of the locking member 55 as a means for adjusting the height of the lower end of the cord supply member 23 from the fabric 50, and the movable block is replaced with the operation plate 37a. This embodiment is mainly different from the first embodiment in that an operation rod 72 extending to the front side of the 19 is provided.

The mounting block 70 has a support wall 70a having an upper surface facing the lower end surface of the detent rod 40. The support wall 70a has a female screw hole 70b concentric with the detent rod 40.
Are formed. A height adjusting screw 71 is screwed into the female screw hole 70b from below, and even if a front cover 74 for protecting and decorating the front surface of the movable block 19 is attached, a knob 71a of the height adjusting screw 71 is provided. It is exposed from the lower side of the face cover 74. This adjustment screw 71
Of the anti-rotation bar 4 protrudes from the upper surface of the support wall 70a.
0 to receive the lower end face, and the height adjustment screw 7
1 by adjusting the screwing position of the cord supply member 23.
The height of the lower end from the fabric 50 is adjusted. The height adjusting screw 71 is fixed with a screw 73 so that the screwing position does not shift.

According to the present embodiment, in addition to the effects of the first embodiment, an operation rod 72 extending to the front side of the movable block 19 is replaced by an operation rod 72 extending forward of the needle 4 adjacent to the cord support rod 22. Because of the provision, a large space can be secured on the front side of the adjacent needle 4, and the effect of threading the adjacent needle 4 can be easily performed.

Further, the height adjusting screw 71 is
Since a is provided so as to be exposed from the lower side of the face cover 74, there is no need to remove the face cover 74 when adjusting the position of the descending end of the cord supply member 23.

Note that the present invention is not limited to the configuration of the above-described embodiment, and may be embodied by appropriately changing, for example, the following without departing from the spirit of the invention.

(1) The present invention is applied to a sewing machine of a type in which the needle bar 83 as shown in FIG. 12 and FIG.

(2) The form of the cord supply member 23 of the embodiment is appropriately changed.

(3) The means for adjusting the height of the lower end of the cord supply member 23 from the fabric 50 is changed. For example, as the means, a helicoid mechanism, a rack-and-pinion mechanism, or the like that can continuously adjust the height can be used.

(4) Instead of the convex portion 22c of the cord support bar 22, a convex portion is provided on the rotation preventing bar 40, and an engaging portion engaging with the convex portion is provided on the movable block 19 of the sewing machine head body 1. thing.

(5) Instead of the ball plunger 43, an engaging portion configured so that the distal end manually engages with the convex portion 22c of the cord support bar 22 so as to be detachable is provided.

[0061]

As described above in detail, according to the sewing machine provided with the coding function according to the first aspect of the present invention, the coding function can be provided even if the space around the needle bar guide hole is narrow. Thus, even when the cord supply member is in the middle of being brought to the retreat position, there is an effect that there is no possibility that the adjacent needle will interfere with the cord supply member.

In addition to the above effects, according to the sewing machine provided with the cording function according to the second aspect of the present invention, the cord supply member can be raised to the retreat position with one touch.

The same effect as described above can also be obtained by the sewing machine provided with the coding function according to the third aspect of the present invention.

In addition to the above effects, according to the sewing machine having the coding function according to the fourth aspect of the present invention, even if coding is started while forgetting to release the evacuation state, the evacuation state is automatically released. This has the effect of being performed.

In addition to the above effects, according to the sewing machine having the coding function according to the fifth aspect of the present invention, the coding function can be provided to the existing sewing machine without significantly modifying it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sewing machine main body of a sewing machine according to a first embodiment of the present invention.

FIG. 2 is a front view of the sewing machine main body.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a perspective view showing a bottom side of the sewing machine main body.

FIG. 6 is a sectional view showing a ball plunger as an engaging portion of the sewing machine.

FIG. 7 is an exploded perspective view showing a locking member as a means for adjusting the height of a cord supply member of the sewing machine.

FIG. 8 is a diagram showing each state when the cord supply member of the sewing machine is manually set in a retracted state.

FIG. 9 is a diagram showing each state when the retracted state of the code supply member of the sewing machine is automatically released.

FIG. 10 is a perspective view showing a sewing machine main body of a sewing machine according to a second embodiment of the present invention.

FIG. 11 is a perspective view showing a bottom surface side of the sewing machine main body.

FIG. 12 is a perspective view showing a sewing machine main body of a conventional sewing machine.

FIG. 13 is a perspective view showing a state in which the cord supply member of the sewing machine is retracted.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sewing machine head body 2 needle bar guide hole 3 needle bar 4 needle 8 support rod guide groove 9 support rod 22 cord support rod 22c convex portion as engaged part 23 code supply member 32 mounting block 36 supply hole 40 detent rod 43 Ball plunger 50 as an engaging member 50 Fabric 52 Code

Claims (5)

[Claims] 1. A plurality of support bar guides provided in a sewing machine head main body, wherein a cord support bar is inserted into one of a plurality of needle bar guide holes provided in the sewing machine head so as to be able to move up and down instead of the needle bar. A non-rotating bar is inserted into one of the non-pressing support bars so as to be able to ascend and descend, and the cord support bar and the detent bar are relatively non-rotatably coupled to each other. A cord supply member extending toward a lowered position of the needle attached to the lower end of the needle bar of the needle bar, and the code supply member is provided with a supply hole for supplying the code through the cord onto the cloth and for inserting the adjacent needle. In the sewing machine, the cord support rod and the detent rod are configured to be able to move up and down without rotating around the axis of the cord support rod, and an engaged portion is provided on a side surface of the cord support rod or the detent rod. And the code The sewing head main body includes an engaging member that engages with the engaged portion at a retracted position where the support rod and the detent rod are raised and holds the cord support rod and the detent rod at the retracted position. A sewing machine provided with a code attaching function, which is provided in a sewing machine. 2. The engaged portion is a convex portion formed on a side surface of the cord supporting rod or the rotation preventing rod, and the engaging member has a tip urged in a protruding direction to the convex portion. The sewing machine provided with a cording function according to claim 1, wherein the sewing machine is configured to be removably engaged. 3. The engaged portion is a convex portion formed on a side surface of the cord support bar or the detent bar, and the distal end of the engaging member is manually engaged with the convex portion so as to be detachable. 2. The sewing machine according to claim 1, wherein the sewing machine is provided with a coding function. 4. In the retracted position, the force for lowering the needle bar is greater than the force acting to hold the cord support bar and the detent bar in the retracted position. A sewing machine provided with a coding function according to claim 2. 5. The sewing machine according to claim 1, wherein the engaging member is provided via a mounting block detachably mounted on the sewing machine head main body. .