JPH067677U - Sewing machine thread guide - Google Patents

Abstract

(57) [Abstract] [Purpose] A thread hooking body having an insertion opening in one direction, a thread tensioning means for vertically sandwiching the sewing thread so as to give a slight tension to the sewing thread from the thread hooking body, and supporting them. A support body, a thread hooking body and a thread tension means, and an inclined surface that covers the support body together with the support body, and is inclined toward the insertion port of the thread hooking body and the thread tension means, with a gap through which the sewing thread passes through the support body. A sewing thread can be properly and easily inserted into a thread guide tool of a sewing machine including a cover body to be installed. [Structure] The inner wall of the inclined surface C of the cover body A is locked by the upper part of the thread hooking body 1 or the thread tensioning means 2, or is disengaged from the sewing thread path of the support body 3, the thread hooking body 1, and the thread tensioning means 2. A projecting body B that projects from the position and locks the cover body A at the tip is provided to stabilize the gap S between the cover body A and the support body 3 when the sewing thread is inserted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thread guide for a sewing machine, and more particularly to a thread guide for a sewing machine that facilitates a sewing thread hooking operation.

[0002]

[Prior art]

 FIG. 5 is an external perspective view showing the overlock sewing machine. In the figure, reference numeral 4 denotes a thread spool serving as a supply source of sewing thread, and the overlock sewing machine is provided with a plurality of thread spools 4 (4 in the figure) 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 narrower as it goes upward. To take out the sewing thread from the thread spool 4, the sewing thread may be pulled out upward.

In order to pull out the sewing thread in this way, the overlock sewing machine is provided with a thread raising means 5 extending above the thread spool 4, and as shown in the figure, the sewing thread is raised by the raising means 5 to overrun. The thread tensioner 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 becomes relatively long as shown in the figure, and the sewing thread oscillates during this period due to the vibration of the driving sewing machine and the thread tension regulator 6 The sewing thread comes loose from the thread, or the sewing thread sways, which causes uneven seams.

For this reason, there has been proposed a thread guide tool 7 which prevents the suture thread from swinging and stabilizes the suture thread. FIG. 6 is a diagram showing a configuration state of the thread guide tool 7. In addition, FIG. 6 shows only one of the plurality of yarn draft inner components 7.

Reference numeral 1 is a thread hooking body having an insertion opening 1a in one direction, and the sewing thread from above can change its traveling direction to a lateral direction. Further, 2 is a thread tension means, and this thread tension means 2 is composed of a thread receiving tray which stores a spring (not shown) and is urged downward. The thread tension means 2 sandwiches the sewing thread from the insertion opening 2a and resists movement of the sewing thread. (2g to 3g) can be given.

Reference numeral 3 denotes a support body that supports the thread hooking body 1 and the thread tension means 2 so that the respective insertion openings 1a and 2a have the same height, and is inclined toward the insertion openings 1a and 2a. It has an inclined surface C.

On the other hand, A is a cover body, and this cover body A is installed so as to cover the yarn hooking body 1 and the yarn tension means 2 together with the support body 3 from above. FIG. 7 (a) is a plan view of the thread guide portion in which the cover body A is installed, FIG. 7 (b) is a side view of the thread guide tool, and FIG. 7 (c) is a Z view shown in FIG. It is a cross-sectional view taken along the line Z.

As shown in the drawing, the cover body A has an arrow 9 indicating the feeding path of the sewing thread on the upper surface thereof, and is directed toward the insertion ports 1a, 2a of the thread hooking body 1 and the thread tension means 2. It has an inclined surface C that is inclined. The cover body A is arranged with a gap S through which the sewing thread can pass through with the support plate 3.

The thread guiding tool configured as described above applies the sewing thread along the arrow 9 marked on the cover body A so as to engage with the inclined surface C, and then applies the sewing thread in the front direction (indicated by the arrow 8). By pulling the sewing thread in the direction (shown), the sewing thread can be easily inserted into the respective insertion openings 1a, 2a of the thread hooking body 1 and the thread tension body 2 by the inclined surface C and the gap S.

[0011]

However, the above-mentioned thread guide of the conventional sewing machine has the following problems. As shown in FIG. 7, the cover A is installed with a gap S so that the sewing thread can pass through the support body 3, so that the installation state is not strong and the sewing thread is strongly attached to the inclined surface S when the sewing thread is inserted. When it hits, there arises a problem that the tip is bent upward as shown in FIG.

When such an inconvenience occurs, the gap S spreads to a position higher than the respective insertion openings 1a, 2a of the thread hooking body 1 and the thread tension means 2, and the sewing thread is not inserted into both of them, and the cover body A It will enter below. If the sewing machine is driven while the sewing thread is not properly engaged with the thread guide tool, the thread guide tool cannot prevent the sewing thread from swinging, the sewing thread comes off the sewing machine, and the sewing thread swings to cause unevenness in the stitches. It causes inconvenience such as.

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

[0014]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned conventional problems, and the thread guide of the sewing machine is fixed to the inner wall of the inclined surface of the cover body by the upper portion of the thread hooking body or thread tension means, or the support body. , A thread hooking body, a protruding body that protrudes from a position that is out of the sewing thread path of the thread tension means and that locks the cover body at the tip end to stabilize the gap between the cover body and the support body when inserting the sewing thread. Then, the above-mentioned conventional problems are to be solved.

[0015]

[Action]

 The thread guide of the sewing machine according to the present invention enables the thread to be easily inserted into the thread hooking body and the thread tension means from the gap provided between the support body and the cover body due to the inclined surfaces. . Then, the inner wall of the inclined surface of the cover body is locked by the upper part of the thread hooking body or the thread tensioning means, or the protruding body protruding from the position deviated from the sewing thread path of the support body, the thread hanging body, and the thread tensioning means. By locking the cover body at the tip and making the gap between the cover body and the support body stable when inserting the sewing thread, proper and easy insertion of the sewing thread is possible.

[0016]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are designated by the same reference numerals, and duplicate description will be omitted. 1 to 4 are views showing an embodiment of a thread guide tool for a sewing machine according to the present invention.

FIG. 1 is a view showing a cross section of a thread guide tool of the sewing machine. As shown in the figure, the thread cage 1 of the thread guide tool of the sewing machine has a tip of the upper part of the inclined surface C of the cover body A. It is installed so as to abut the inner wall, and thereby the cover body A is locked.

With the thread guide of the sewing machine configured as described above, even when the sewing thread is strongly attracted to the inclined surface C of the cover body A when the sewing thread is inserted, the thread hooking body 1 prevents the gap S from being greatly expanded. Can be done.

Although not shown in the figure, the shape of the upper surface of the set screw of the thread receiving tray of the thread tension means 2 may be large, and the inner wall of the inclined surface C of the cover body A may be locked. . On the other hand, in FIG. 2, B is a projecting body, and this projecting body B is integrally formed with the thread hooking body 1, and the tip portion is a groove portion formed on the inner wall of the inclined surface C of the cover body A as shown in FIG. It is inserted in A1.

In the thread guide of the sewing machine configured as described above, even if the sewing thread is strongly attracted to the inclined surface C of the cover body A when the sewing thread is inserted, the protrusion B can prevent the gap S from being greatly expanded. I can. As a result, the sewing thread can be properly inserted into the thread hooking body 1 and the thread tension means 2 through the gap S.

The protrusion B shown in FIG. 3 is formed so as to protrude laterally from the thread hooking body 1, and its tip is inserted into a notch A2 formed in the side wall of the cover A. Also in this projecting body B, as in the above description, the widening of the gap S at the time of inserting the suture thread is prevented, and the suture thread can be properly inserted. In this embodiment, the example in which the protruding portion B is formed on the thread hooking body 1 is shown, but the protruding portion B is protruded at a position outside the insertion path of the sewing thread, for example, the head of the thread tension means 2 or the rear portion of the support 3. The portion B may be provided, and the cover body A may be locked by the protruding portion B.

[0022]

[Effect of device]

 As described above, the thread guide of the sewing machine according to the present invention locks the inner wall of the inclined surface of the cover body by the upper part of the thread hooking body and the thread tension means of the thread guide of the sewing machine, or the support body and the thread. A protrusion is provided that protrudes from the hook body and thread tension means out of the sewing thread path and locks the cover body at the tip to ensure a stable gap between the cover body and the support body when inserting the sewing thread. Since it is configured, it is possible to insert the sewing thread properly without pushing up the cover body when inserting the sewing thread, eliminate problems such as uneven seams and cutting of the sewing thread, and stabilize the quality of the sewn product. It will be possible.

[Brief description of drawings]

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

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

3 is a cross-sectional view of the thread guide of the sewing machine shown in FIG.

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

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

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

7 is a diagram showing the conventional thread guide shown in FIG. 5, where FIG. 7 (a) is a plan view, FIG. 7 (b) is a side view, and FIG. 7 (c) is 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 the cover body is bent upward when the sewing thread is strongly applied to the thread guide of the conventional sewing machine.

[Explanation of symbols]

 1 thread hooking body 2 thread tensioning means 3 support A cover body B projecting body S gap

Claims (1)

[Scope of utility model registration request] 1. A thread hooking body having an insertion opening in one direction, a thread tensioning means for vertically sandwiching the sewing thread so as to give a slight tension to the sewing thread from the thread hooking body, the thread hooking body and the thread tensioning means. Supporting the insertion ports of and at the same height position, and covering the support having an inclined surface inclined toward these insertion ports, the thread hooking body and the thread tension means together with the support,
A thread guiding tool for a sewing machine, comprising: a thread hooking body and a cover body that is provided with an inclined surface that is inclined toward the insertion port of the thread tensioning means, and a cover body that is installed with a gap through which a sewing thread passes through a support body. The inner wall of the inclined surface of the cover body is locked by the upper part of the body or the thread tension means, or the support body, the thread hook body,
A projecting member that projects from a position of the thread tension means that is out of the sewing thread path and that locks the cover body at the tip end is configured to stabilize the gap between the cover body and the support body when inserting the sewing thread. Sewing machine thread guide.