JP2605924Y2 - Sewing machine thread guide - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread guide for a sewing machine, and more particularly, to a thread guide for a sewing machine which makes it easy and quick to sew a sewing thread.

[0002]

2. Description of the Related Art FIG. 5 is an external perspective view showing an overlock sewing machine. In the figure, reference numeral 4 denotes a thread spool as a supply source of a sewing thread. The overlock sewing machine is provided with a plurality of (four in the figure) thread spools 4 as shown in the figure. As shown in the figure, the thread spool 4 is wound with a sewing thread so that the outer shape becomes thinner toward the upper side. To take out the sewing thread from the thread spool 4, the sewing thread may be pulled out upward.

[0003] To perform the withdrawal of such suture, overlock sewing machine provided with a yarn launching means 5 extending above the thread spool 4, launch the suture by the yarn launching means 5 as shown have FIG Over The thread tension device 6 of the lock sewing machine is guided.

By the way, the sewing thread from the thread raising means 5 to the overlock sewing machine is relatively long as shown in the figure, and the sewing thread swings due to the vibration of the driving sewing machine and the like, and the thread tension device 6 Inconveniences such as the sewing thread coming off from the stitches and the unevenness of the seam due to the swing of the sewing thread occur.

For this reason, the swing of the sewing thread is prevented,
A thread guide 7 for stabilizing a sewing thread has been proposed. FIG. 6 is a diagram showing a configuration state of the thread guide 7. FIG. 6 shows only one of the plurality of thread guides 7 provided.

[0006] Reference numeral 1 denotes a threaded body having an insertion opening 1a in one direction, and the traveling direction of a sewing thread from above can be changed by the threaded body 1 in the lateral direction. Reference numeral 2 denotes a thread tension means. The thread tension means 2 comprises a thread receiving plate which stores a spring (not shown) and is urged downward, and has an insertion port 2a.
Twist the sewing thread, and move the sewing thread with the movement resistance (from 2 g to 3
g). This thread
The sling body 1 and the yarn tension means 2 constitute a yarn guiding portion.
You.

3 is a threaded body 1 and thread tension means 2
Is a support for supporting the respective insertion openings 1a, 2a at the same height, and has an inclined surface C inclined toward the insertion openings 1a, 2a.

On the other hand, A is a cover, and this cover A
Is installed so as to cover the threaded body 1 and the thread tension means 2 together with the support 3 from above. FIG. 7A shows the cover body A.
FIG. 2B is a plan view of the thread guide unit in which is installed, FIG. 2B is a side view of the thread guide, and FIG. 2C is a cross-sectional view taken along the line Z-Z shown in FIG.

As shown in the figure, the cover body A is provided with arrows 9 indicating the feed path of the sewing thread on the upper surface, and is directed to the insertion holes 1a, 2a of the threading body 1 and the thread tension means 2. It has an inclined surface C that is inclined. And this cover body A is the support 3 and the suture is disposed at a gap S can be through.

[0010] The thread guide device constructed as described above applies the sewing thread along the arrow 9 marked on the cover body A so as to engage the inclined surface C, and then applies the sewing thread in the forward direction (arrow 8).
(Direction shown in FIG. 3), the sewing thread can be easily inserted into the respective insertion openings 1a and 2a of the threaded body 1 and the thread tension body 2 by the inclined surface C and the gap S.

[0011]

However, the thread guide of the conventional sewing machine has the following problems. As shown in FIG. 7, since the cover body A is provided with a gap S so that the sewing thread passes through the support body 3, the installation state does not become strong and the sewing thread is strongly inserted into the inclined surface S when the sewing thread is inserted. When it is attracted, there is a disadvantage that the tip is bent upward as shown in FIG.

When such inconvenience occurs, the gap S expands to a position higher than the insertion openings 1a and 2a of the threading body 1 and the thread tension means 2, and the sewing thread is not inserted into both of them, and the cover A You will get down. If the sewing machine is driven in such a state that the sewing thread is not properly engaged with the thread guide, the thread guide cannot prevent the swing of the sewing thread, the sewing thread may come off from the sewing machine, and the seam may be uneven due to the swing of the sewing thread. Will be inconvenient.

Further, the sewing thread is strongly pinched, and the sewing thread is cut off during sewing.

[0014]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. Therefore, a thread guide of a sewing machine is provided between a thread rising means provided on the sewing machine and a thread tensioner. A thread guide provided on a support, for introducing a sewing thread that has been raised upward by the thread raising means, and for stabilizing the sewing thread inserted into the insertion port and sending it to a thread tensioner; And a cover body that covers an upper portion of the thread guide portion and has an inclined surface that guides a sewing thread to the insertion port, and a sewing thread from the thread rising means is provided on the inclined surface.
It is guided in the yarn guide member of the sewing machine Ru is inserted into the insertion opening of the thread guide portion, up and down between the thread guide portions or the support
An engagement portion to be engaged is provided near the inclined portion of the cover body to prevent the gap between the cover body and the support from expanding, thereby solving the above-mentioned conventional problems.

[0015]

The thread guide of the sewing machine according to the present invention moves a sewing thread along an inclined surface formed in a cover body, guides the thread to an insertion port, and inserts the sewing thread into the thread guide. At this time, in the cover body, the locking portion formed near the inclined portion is locked while being hooked on the thread guide portion or the support member, and the cover body is not pushed up by the sewing thread, and the cover body and the cover body are not pushed up. A large spread of the gap between the supports can be prevented , and the sewing thread can be reliably inserted into the thread guide.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The same parts as in the conventional example are denoted by the same reference numerals, and redundant description will be omitted. FIGS. 1 to 4 show an embodiment of the thread guide of the sewing machine according to the present invention.

FIG. 1 is a view showing a cross section of a thread guide of a sewing machine. The threaded body 1 of the thread guide of the sewing machine has an upper end with an inner side of an inclined surface C of a cover body A as shown in FIG. wall (engaging
The stopper A is installed so as to be in contact with the stopper A, thereby locking the cover A.

The thread guide of the sewing machine configured as described above prevents the gap S from widening by the thread hook 1 even when the thread is strongly drawn to the inclined surface C of the cover A when the thread is inserted. Can be done.

Although not shown in the drawing, the shape of the upper surface of the set screw of the thread tray of the thread tension means 2 may be made large, and the inner wall of the inclined surface C of the cover A may be locked. . On the other hand, in FIG. 2 B This projecting member B is projecting member is formed integrally with the yarn over body 1, the distal end portion is formed on the inner wall of the inclined surface C of the cover body A as shown in FIG. 3 the groove A1
(Locking part) .

In the sewing machine thread guide configured as described above, even when the sewing thread is strongly applied to the inclined surface C of the cover body A at the time of inserting the sewing thread, the projection body B can prevent the gap S from widening. I can do it. This allows the sewing thread to be
It can be more appropriately inserted into the threaded body 1 and the thread tension means 2.

The protruding body B shown in FIG. 4 is formed so as to protrude laterally from the threaded body 1, and its tip end is formed in a notch A 2 (locking part) formed on the side wall of the cover body A. Has been inserted. Also in this protruding body B, as described above,
The gap S at the time of insertion of the sewing thread is prevented from widening greatly, and proper insertion of the sewing thread is enabled. In this embodiment, the example in which the projecting portion B is formed on the threaded body 1 is shown. The cover A may be locked by the protrusion B.

[0022]

As described above, the thread guide of the sewing machine according to the present invention is provided on the support between the thread tensioner and the thread tensioner installed on the sewing machine. by an insertion port for introducing the thread that was launched upward, covering a yarn guide section for sending to the thread tension regulator to stabilize the suture inserted into the insertion inlet, the yarn guide section above, and a cover body inclined surface for guiding the suture relative to the insertion opening is formed, sewn from the yarn launching means
In a thread guide device of a sewing machine, a thread is guided on an inclined surface and inserted into an insertion opening of the thread guide section.
The engaging portion that vertically engages with the inclined portion of the cover body
It is provided in the vicinity to prevent the spread of the gap between the cover body and the support, so that the cover body is not pushed up by the sewing thread when the sewing thread is inserted, and the gap between the cover body and the support is Large spread can be prevented, and the sewing thread can be reliably inserted into the thread guide. Therefore,
Inconveniences such as uneven stitches and cutting of the sewing thread, which are caused by the sewing thread entering below the cover body, can be eliminated, and the quality of the sewing product can be stabilized.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a thread guide device of a sewing machine according to the present invention.

FIG. 2 is an exploded perspective view showing a configuration state of a thread guide of a sewing machine having a threaded body having a protrusion.

FIG. 3 is a sectional view of the thread guide of the sewing machine shown in FIG. 2;

FIG. 4 is an explanatory view showing a thread guide of the sewing machine having a protrusion at a position different from the thread guide of the sewing machine shown in FIG. 1;

FIG. 5 is an external perspective view showing the overlock sewing machine.

FIG. 6 is an exploded perspective view showing a configuration state of a thread guide of a conventional sewing machine.

7 (a) is a plan view, FIG. 7 (b) is a side view, and FIG. 7 (c) is a view showing the conventional yarn guide shown in FIG. It is sectional drawing of the ZZ line.

FIG. 8 is an explanatory view showing a state in which the tip of a cover body is bent upward when a sewing thread is strongly attracted to a thread guide device of a conventional sewing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Threading body 2 Thread tension means 3 Support body A Cover body B Projecting body S Gap

Claims (1)

(57) [Scope of request for utility model registration] 1. An insertion port provided on a support between a thread raising means and a thread tensioner installed on a sewing machine, and having a thread for introducing a sewing thread raised upward by the thread raising means, A thread guide section for stabilizing the sewing thread inserted into the insertion port and sending the thread to the thread tensioner; covering the upper portion of the thread guide section, and applying a sewing thread to the insertion port.
And a cover body inclined surface for guiding is formed, suture from the yarn launching device is guided by the inclined surface
In the thread guide member of the sewing machine Ru is inserted into the insertion opening of the yarn guide section is provided with a locking portion which engages vertically between the yarn guiding section or the support on the inclined portion near the cover member, the cover body A thread guide device for a sewing machine, wherein a gap between the support and the support is prevented from spreading .