WO2005003425A1

WO2005003425A1 - Sewing needle mounting structure and sewing needle

Info

Publication number: WO2005003425A1
Application number: PCT/JP2004/008994
Authority: WO
Inventors: Shuji Sakaki
Original assignee: Wacoal Corp.
Priority date: 2003-07-01
Filing date: 2004-06-25
Publication date: 2005-01-13
Also published as: CN1813090A; TW200506128A; KR20060025579A; JP2005021337A; JP4079224B2; EP1645673A1

Abstract

[PROBLEMS] To remarkably improve production efficiency by minimizing the possibility of the breakage of a sewing needle to eliminate time-consuming broken needle collecting operation. [MEANS FOR SOLVING PROBLEMS] A sewing needle mounting structure, comprising a needle stopper (6) having a mounting hole (8) allowing a sewing needle (3) to be inserted therein from the underside and a needle locking mechanism (B) fixedly locking the sewing needle (3) inserted into the mounting hole (8). The needle locking mechanism (B) further comprises a spring (12) installed in the needle stopper (6) and a contact member (10) energized and brought into contact with the sewing needle (3) from the side by the elastic force of the spring (12). The contact member (10) is so formed that, when an upward force of a specified value or higher acts on the sewing needle (3), the fixedly locked state of the sewing needle which elastically energizes the sewing needle (3) is released, and the mounting hole (8) is upwardly extended longer than a length required for inserting the sewing needle (3) into a regular mounting position.

Description

Specification

Sewing needle mounting structure and sewing needle

Technical field

The present invention relates to a sewing machine needle mounting structure and a sewing machine needle used for this structure, and more particularly, to a sewing machine mounting structure and a sewing machine needle that are hardly broken.

Background art

[0002] A conventional sewing machine needle mounting structure in a sewing machine is such that a mounting hole in which a sewing needle can be inserted from below is formed in a needle stopper, and the sewing needle inserted in the mounting hole is engaged and fixed to the needle stopper. A needle locking mechanism is provided. The needle locking mechanism is configured so that a pin-shaped contact inserted into the needle stopper in a horizontal position perpendicular to the sewing machine needle can be moved forward and backward by a screw mechanism operated by fingers. The sewing machine needle is locked and fixed to the needle stopper by frictional force generated by moving and pushing the pointed end of the tip between the sewing machine needle and the wall surface of the mounting hole.

[0003] In this case, the sewing needle is positioned up and down by inserting the upper end thereof into contact with the top of the mounting hole, and prevents the sewing needle from moving upward, so that an upward external force acts on the sewing needle. The structure was such that it could be held tightly without dislocation. As such a sewing machine needle mounting structure, for example, one disclosed in Patent Document 1 is known.

Patent Document 1: JP-A-11-309288

Disclosure of the invention

Problems to be solved by the invention

[0005] When mass-producing sewing products with an industrial sewing machine, the most problematic is breakage of the sewing needle.

That is, if an abnormal force (in most cases, an upward force) acts on the sewing machine needle, the conventional sewing machine needle mounting structure described above cannot move the sewing machine needle upward with respect to the needle stopper. The needle part is bent or broken because there is no escape for power. If it is bent, you only need to replace the needle, but if it breaks, it is not convenient.

[0006] When an external force acts on the sewing machine needle and the needle breaks, in most cases, excessive stress causes It breaks and scatters, often dispersing into a large number of debris and scatters around. Replacement of broken needles is sufficient, but the problem is that all broken pieces of needles must be collected. This is because it is absolutely necessary to avoid distributing needles in clothing or other sewn items while they are mixed.

[0007] However, collecting all the fragments that have scattered and dispersed around a plurality of fragments is a cumbersome operation requiring perseverance and time, which requires only manual work. As a result, the production efficiency has to be greatly reduced. Therefore, techniques have been tried to control broken needles so that they do not scatter around and to improve the efficiency of the work of collecting broken sewing needles. There was room for further improvement in needle collection.

[0008] An object of the present invention is to improve the efficiency of the work of collecting broken needles by devising a structure for attaching the sewing needle so that the sewing machine is not broken as much as possible. The point is to eliminate the work of collecting wastewater and greatly improve production efficiency.

Means for solving the problem

[0009] The configuration of claim 1 is that the needle stopper has a mounting hole through which the sewing needle can be inserted from below, and the sewing needle inserted into the mounting hole is locked and fixed to the needle stopper. The sewing machine needle mounting structure provided with a locking mechanism

The needle locking mechanism comprises an elastic member provided on the needle stopper, and a contact member for urging and contacting the sewing machine needle in a lateral direction by the elastic force of the elastic member. The resiliently biased sewing needle locking state is released when a predetermined upward force is applied to the sewing needle, and the mounting hole has a length required for inserting the sewing needle into a proper mounting position. It is characterized in that it is formed so as to extend upwardly.

[0010] In the configuration of claim 2, in the configuration of claim 1, the needle locking mechanism is attached to the sewing machine needle from a lateral side by an elastic member provided on the needle stopper and an elastic force of the elastic member. And a contact member to be pressed against.

[0011] In a third aspect of the present invention, in the configuration of the first aspect, the needle locking mechanism is attached to the outside of the needle stopper by an elastic force and the sewing machine needle is elastically fitted to the member. Side And a contact member made of a member that is biased and contacted from one side.

[0012] A configuration of claim 4 is the configuration according to claim 2 or 3, wherein the contact member is elastically attached to the sewing needle.

[0013] A configuration of claim 5 is the configuration of claim 4, wherein the elastic member changes the adhesion force of the contact portion to easily set a limit value of an upward force for causing the sewing needle to escape. It is characterized in that it can be changed and adjusted.

[0014] A configuration of claim 6 is the configuration according to claim 4 or 5, wherein a tip of the contact member is formed in a conical point.

[0015] A configuration of claim 7 is characterized in that, in the configuration of any one of claims 1 to 6, the recess formed in the sewing needle is formed in a conical shape. That is what you do.

[0016] In the configuration of claim 8, in the configuration of claim 1, the needle locking mechanism is a contact member force having a clip-shaped elastic force, and the contact member is configured to have the needle stopper by elastic force. And a member abutting the sewing machine needle from the lateral side by elastic force.

[0017] The configuration of claim 9 is characterized in that, in the configuration of any one of claims 1 to 8, the needle locking mechanism is provided at two locations.

[0018] The configuration according to claim 10 is a needle part having a needle hole, a handle part having a larger diameter than the needle part and capable of being inserted into a needle stopper, and a connecting part between the needle part and the handle part. A concave portion for engaging and abutting the abutment member on the needle stopper side for positioning with the handle portion. is there.

An eleventh aspect is characterized in that, in the configuration of the tenth aspect, the recess formed in the sewing needle is formed in a conical shape.

[0020] A configuration of claim 12 is the configuration of claim 10, wherein the recess formed in the sewing needle is formed in a groove shape.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the sewing machine is provided with a sewing machine bed part a and one end of the bed part a. It has a strut b and an arm c extending upward from the upper end of the strut b to above the bed a. A sewing section A is provided below the distal end of the arm section c so that the sewing operation can be freely performed in cooperation with the sewing machine table 4 following the bed section a.

[0022] In this sewing machine, when a large upward force is applied to the sewing needle 3, the sewing needle 3 can be displaced upward with respect to the needle stopper 6 into which the sewing needle 3 is fitted, and the sewing needle 3 is folded as much as possible. The function to prevent the stitching is provided in the sewing part A. This makes it possible to avoid most cases where the needle is broken due to various factors, and it is possible to greatly reduce the labor, labor, and time for searching for the broken needle tip. Hereinafter, the sewn portion A exhibiting the preferable needle breakage avoiding function will be described in detail.

As shown in FIGS. 1 and 2, the sewing portion A includes a presser bar 2 having a fabric presser member 1 at the lower end thereof, and a sewing needle (sewing needle) 3 which moves up and down on the front side of the presser bar 2. In addition, the needle plate 5 of the sewing machine table 4 disposed below the sewing needle 3 is formed with a needle hole (not shown) for allowing the needle 3 to move downward. The sewing needle 3 is fitted on the needle stopper 6, and the needle stopper 6 is detachably supported by a support rod 7 provided in the sewing machine bed part a.

As shown in FIGS. 2 to 5, the needle stopper 6 has a substantially cylindrical rod body 6 A fitted on the support rod 7 and a corner protruding laterally at the lower end thereof. It is made of an aluminum alloy having a cylindrical projection 6B. The rod main body 6A has a shape in which a part of the outer peripheral portion is cut so as to have a substantially D-shaped cross section, and a mounting hole 8 for a needle mounting penetrating above and below the hole is formed. At the same time, a lateral hole 9 for locking the sewing needle is formed in the projection 6B. In the needle stopper 6, the sewing machine mounting hole 8 penetrates up and down, and thus is referred to as a "mounting hole". However, this is, of course, one embodiment of the "mounting hole".

[0025] The mounting hole 8 is basically formed with a hole diameter slightly larger than the outer diameter of the sewing needle 3 which can fit the sewing needle 3 inside and supports the sewing needle 3 with less rattling. The upper part of the force mounting hole is formed in a relief hole 8a having a diameter that is clearly larger than the outer diameter of the sewing needle 3. The support rod 7 also has a relief hole 7a following the relief hole 8a. The lateral hole 9 is provided with a needle locking mechanism B that urges the sewing needle 3 inserted into the mounting hole 8 to a use posture having a predetermined height position and orientation to keep the needle 3 locked. The needle locking mechanism B includes, as shown in FIGS. 2 and 3, a piston member (an example of an abutting member) 10 which is slidably slidably inserted into the horizontal hole 9, It is composed of a knob 11 integrally provided on the distal end side, and a winding panel (an example of an elastic member) 12 fitted inside the lateral hole 9 to the piston member 10. The needle locking mechanism B moves the sewing needle 3 in a direction in which a needle hole 3a formed at the tip thereof is set in a predetermined direction, and a predetermined insertion amount with respect to the needle stopper 6 (that is, with respect to the needle plate 5). (Predetermined height position).

As shown in FIGS. 2, 3, and 7 (a), the piston member 10 has a head portion 10A just fitted into the side hole 9 and a small diameter portion 9a just at the protruding end of the side hole. The winding panel 12 is fitted around the shaft 10B. A triangularly shaped working top (an example of a sharpened portion) 10a is formed on the distal end side of the head portion 10A, and a knob 11 is pressed into the distal end portion of the shaft portion 10B protruding from the protruding portion 6B. A base end l ib for mounting is formed. The winding spring 12 presses the head portion 10A in the direction of the mounting hole 8 (to the right in FIG. 2). In a free state in which the sewing needle 3 is not inserted into the mounting hole, the knob 11 engages with the protrusion 6B. It is in contact with the tip surface 6b. The knob 11 is grasped with fingers, and the piston member 10 is configured to be slidable and returnable in the outward direction (leftward in FIG. 2) against the urging force of the winding panel 12.

As shown in FIGS. 2 and 6, the sewing needle 3 is a single component including a handle 13, a connecting portion 14, a needle stem 15, and a needle tip 16. A needle constriction 13a having a short length is formed, and a concave portion (recess) 17 is formed in the vicinity of the needle in the longitudinal direction thereof, and a needle hole is formed in the needle stem 15 close to the needle tip 16. 3a is formed. The concave portion 17 formed on the side surface of the handle portion 13 has a triangular pyramid shape in the lateral direction, and is formed so that the operation top portion 10a of the sewing needle 3 can enter therein. Note that the needle stem 15 and the needle tip 16 are collectively defined as the needle 15.

The knob 11 is, as shown in FIGS. 3 and 7 (b), a coin-shaped member having a circular hole 11a at the center for press-fitting the base end portion 10b of the piston member 10, and has an outer periphery. It has a knurled part l ib that is effective as a non-slip part, and both ends are chamfered. In order to press-fit the knob 11 into the piston member 10, the winding panel 12 and the piston member 10 are inserted into the lateral hole 9 in this order, and are performed on the base end portion 10b protruding from the projection 6B. . [0030] The operation of mounting and replacing the sewing needle 3 is as follows. That is, the sewing needle 3 is inserted into the mounting hole 8 from the lower end of the rod body 6A, and the knob 11 is pulled back and moved against the urging force of the winding panel 12, so that the handle 13 is moved to a position where the operation top 10a is passed. Rush to move. In this state, the pull-back operation of the knob 11 is released, and the sewing needle 3 is moved up and down while moving left and right to perform a search movement. 17 is inserted (see Fig. 3), and the operation of attaching the sewing needle 3 to the needle stopper 6 is completed.

[0031] When removing the sewing needle 3 by replacement, replacement, or the like, first pull the knob 11 to pull out the working top 10a of the piston member 10 from the concave portion 17 of the sewing needle 3, and then move the sewing needle 3 downward. Just by pulling it out, it can be pulled out of the mounting hole 8 and removed from the needle stopper 6.

In the above-described needle locking mechanism B, the sewing needle 3 can be positioned up and down and in the rotating direction by fitting the action top portion 10a which is urged and projected into the concave portion 17, so that the direction of the needle hole 3a is adjusted. This eliminates the need for an additional operation, and has the advantage that the vertical position can be determined while allowing the sewing needle 3 to move upward.

[0033] Further, due to the locking function by the fitting of the convex and concave portions, when the regular sewing needle 3 shown in FIG. When a rising force is applied, the component force for escaping and moving the piston member 10 laterally increases due to the tapered fitting shape of the acting top portion 10a and the concave portion 17, and the piston resists the urging force of the winding panel 12. The member 10 moves to the knob 11 side, the engagement between the action top 10a and the recess 17 is released, and the sewing needle 3 slides upward as shown in FIG. 2 (b).

FIG. 2 (b) shows a state in which the sewing needle 3 has been lifted upward to a height position at a distance H away from the regular positional force. Therefore, when a large upward external force acts on the sewing needle 3, the sewing needle 3 automatically moves to the escape hole 8 a or the escape hole 7 a, and there is an advantage that breakage of the sewing needle 3 can be avoided.

The limit value of the upward force for moving the sewing needle 3 upward can be easily changed and adjusted by changing and setting the projecting biasing force of the piston member 10 by the winding panel 12. In addition, it is also possible to change and set the start condition of the escape movement by changing the taper angle at the fitting portion between the action top portion 10a and the concave portion 17 or changing the insertion depth into the sewing needle 3. It is your own. In order to cope with a change in the sewing work target, there is a method of replacing the needle stopper 6 with the sewing needle 3. For example, the number 10 sewing needle 3 is attached to the support rod 7 with a needle stopper 6 having a dedicated winding spring 12 and a set, and the number 9 sewing needle 3 is attached to the dedicated winding panel. It is attached to the support bar 7 in a set with the needle stopper 6 having 12. However, the coloring of the needle stopper 6 by the alumite treatment should be different between the No. 10 sewing needle and the No. 9 sewing needle so that these are not mistaken.

[Another Embodiment]

A configuration is also possible in which the projecting shape of the action top portion 10a is a hemispherical shape, and the concave portion 17 is a corresponding spherical concave portion. A structure with a triangular pyramid or spherical top 10a has the advantage of being able to pivot if an excessive force is applied in the pivoting direction, not only in the upward and downward directions.However, it is only allowed to escape in the vertical direction. If so, it is also possible to set the action top 10a in a triangular shape in a side view inclined only up and down, and in a rectangular shape in a plan view. Thus, the needle locking mechanism B can be variously changed.

Further, as another embodiment, there is a method shown in FIG. 8, in which the abutment member 20 locks and fixes the sewing machine needle to the needle stopper.

The needle stopper 24 of the present embodiment has an abutment member 20 inserted therein and a lateral hole 23 formed therein for locking and fixing a sewing needle 25 therein. A member 22 externally fitted to the side surface of the tool 24 and a member 21 abutting on the sewing machine needle 25 for locking and fixing. The sewing needle 25 is the same as the sewing needle 3 of the above-described embodiment, and has a recess 26 in the same manner.

[0040] The member 22 is made of an elastically deformable material, and is formed into a shape in which a part of a substantially cylindrical shape having an inner diameter smaller than the outer diameter of the needle stopper 24 is missing, and the elastic force of the needle stopper 2 4 is detachably fitted to the outer surface of the cover. As a result, the member 21 can be brought into contact with the sewing machine needle 25 by the elastic force so that the member 21 can be locked and fixed. However, if a force for pushing the sewing machine needle 25 upward strongly is applied for some reason, the member 21 becomes the member 22. The member 22 is deformed by being pushed outward by the urging force of the member, and the sewing needle 25 can be moved upward.

In the present embodiment, as in the above-described embodiment, the shape of the contact surface of the member 21 and the shape of the concave portion of the sewing needle 25 can be changed to various shapes. Further, as yet another embodiment, there is a method shown in FIG. 9, in which a sewing machine needle is sandwiched by a clip-shaped abutting member 30 and is locked and fixed to a needle stopper.

[0043] In the present embodiment, the needle stopper 34 has a clip-shaped abutting member 30, in which a groove 33 for pinching and locking the sewing machine needle 35 is formed. It is composed of a member 31 which is in contact with the outside of the stopper 34 and a member 32 which is in contact with the sewing needle 35 to be locked and fixed. The machine needle 35 has a groove 36 instead of the recess of the other embodiment.

The abutting member 30 is configured to sandwich and fix the needle stopper 34 and the sewing needle 35 due to its shape. The member 31 presses the outside of the needle stopper 34, and the member 32 fits in the groove 36 of the sewing needle 35 and presses the sewing needle 35. At this time, the needle stopper 34 and the sewing machine needle 35 are sandwiched and fixed by the elastic force of the clip shape. However, if a force is applied to the sewing machine needle 35 that pushes it upward for some reason, the member 32 is pushed out of the groove 33 of the needle stopper 34, and the sewing machine needle 35 can move upward. Thus, in order to allow the member 32 to freely move, the needle stopper 34 is formed with a groove 33 which is not a lateral hole.

[0045] While various embodiments have been described, as shown in FIG. 10, the above embodiments can be used in two places.

FIG. 10 shows, as an example, a case where the needle locking mechanisms B are used side by side. By using the two needle locking mechanisms B, it is possible to widely cope with changes in sewing force. In the example shown in FIG. 10, the needle locking mechanisms are arranged vertically and can be used side by side in a direction perpendicular to the force, or different needle locking mechanisms can be used in combination.

[0047] Fig. 11 shows that when the sewing needle is inserted into the mounting hole of the needle stopper, it must be positioned in accordance with the side hole or the like of the needle stopper. Attach a silicone o-ring 41 to the sewing needle 40 so that it does not occur. Reference numeral 42 denotes a workbench for mounting work.

The worktable 42 has a groove 45 into which the O-ring 41 is fitted, and an insertion hole 43 into which the sewing needle 40 is inserted. The depth X of the insertion hole 43 is formed to be the same as the length X from the tip of the sewing needle 40 to the place where the o-ring 41 is attached. Thus, the o-ring 41 can be mounted at the same position. [0049] The work table 42 is used by first setting the o-ring 41 in the groove 45 of the work table 42. Then, the sewing needle 40 is inserted all the way into the insertion hole 43. Next, when the sewing needle 40 is pulled out, the O-ring 41 is mounted at a predetermined position.

In the sewing machine needle mounting structure according to claim 1, the mounting hole of the sewing machine needle of the needle stopper is extended so that the sewing machine needle can move upward, and the sewing machine needle is locked and fixed by elastically biasing the sewing machine needle. Therefore, in normal sewing work, the sewing needle moves integrally with the needle stopper, and sewing work can be performed well. When an abnormal upward force is applied to the sewing needle due to, for example, wrapping the cloth, the needle locking mechanism functions so that the sewing needle can escape upward by staking the urging force of the elastic member. In addition, the abnormal force hardly acts on the sewing needle, so that the needle can be prevented from being bent or broken.

In other words, since the present invention is a means for preventing the breakage of the sewing machine needle itself, which does not depend on how to handle the broken needle, the sewing machine needle is prevented from being broken and scattered. The troublesome and time-consuming labor of collecting all debris is relieved, and the downtime of the production line is greatly reduced. As a result, by devising the needle locking mechanism using the needle stopper and the sewing machine needle, it is possible to avoid breakage of the sewing machine needle while making a relatively simple modification, and it is a practical advantage that the rational and production efficiency is improved. Could be offered as.

[0052] In the present invention, as the sewing machine needle mounting structure, the conical pointed portion of the abutting member is configured to be fitted into a recess formed on the side surface of the sewing machine needle. , In addition to the position in the vertical direction, it is also positioned in the rotating direction. As a result, the structure for preventing breakage of the sewing machine needle can be used, and the function of positioning the sewing machine needle in the rotating direction can also be provided.

[0053] In the present invention, it is possible to provide a sewing machine needle suitable for the sewing machine needle mounting structure of claim 1 as a sewing machine needle. That is, since the handle portion of the sewing machine needle including the large-diameter handle portion, the needle portion, and the connecting portion of the needle portion and the handle portion is provided with a recess, when the handle portion is attached to the needle stopper of the sewing machine, the recess is provided. The contact member can be positioned with respect to the needle stopper by engaging with the recess. Therefore, it was possible to provide a preferable sewing machine needle in which the possibility of breakage can be avoided by a simple remodeling simply by providing a recess in the handle.

[0054] In the present invention, as the sewing needle or the attachment structure thereof, the recess formed in the sewing needle is conical. When the abutment member is engaged in the recessed portion, the vertical movement of the sewing machine needle is restricted, and the movement is also restricted in the turning direction which is not easy. Become. Therefore, when the sewing needle is inserted into the mounting hole of the needle stopper, as long as the abutment member is engaged in the recess, it is positioned in the vertical direction and also in the rotating direction. I was able to. Positioning in the rotation direction has an advantage that the needle hole can be easily set in a normal direction.

Brief Description of Drawings

FIG. 1 is a front view showing a sewing portion of a sewing machine and its vicinity.

[FIG. 2] (a) is a rear view of the sewn portion, and (b) is a rear view of the sewn portion showing a state in which the sewing needle has retreated. [FIG. 3] A front view showing a needle stopper and a needle locking mechanism.

[Figure 4] Side view of needle stopper

[Fig.5] Bottom view of needle stopper

[FIG. 6] (a) is a front view of the sewing needle, and (b) is a side view of the upper end of the sewing needle.

[FIG. 7] (a) is a front view showing the shape of the piston member, and (b) is a front view showing the shape of the knob, respectively.

FIG. 8 is a perspective view showing one embodiment of the present invention.

FIG. 9 (a) is a perspective view showing one embodiment of the present invention, and (b) is a side view.

FIG. 10 is a side view showing an embodiment when the needle locking mechanism B is used at two places.

FIG. 11 is a perspective view of a worktable, a ring, and a sewing needle.

Explanation of symbols

3 Sewing needle

0a Needle hole

6 Needle stopper

8 Mounting hole

10 Contact member

10a Sharp part

12 Elastic members

13 Handle

14 Connection Needle part Depressed part Abutment member Needle stopper Tool for sewing machine Abutment member Needle stopper Tool for sewing machine Needle for sewing machine

Claims

The scope of the claims

[1] The needle stopper is provided with a mounting hole through which a sewing needle can be inserted from below, and a needle locking mechanism for locking and fixing the sewing needle inserted into the mounting hole to the needle stopper. A sewing machine needle mounting structure, wherein the sewing machine needle is configured to be released when a predetermined upward force is applied to the sewing machine needle, and the mounting hole is used to insert the sewing machine needle into a regular mounting position. A sewing machine needle mounting structure that is formed to extend above the required length.

[2] The needle locking mechanism comprises an elastic member provided on the needle stopper, and a contact member which is urged against the sewing needle from a lateral side by an elastic force of the elastic member. Machine needle mounting structure described in.

[3] A member in which the needle locking mechanism is fitted to the outside of the needle stopper by elastic force, and a member force for urging and abutting the sewing machine needle from the side by the elastic force. The sewing machine mounting structure according to claim 1, which is a contact member.

4. The sewing machine needle mounting structure according to claim 2, wherein the contact member is elastically attached to the sewing machine needle.

5. The sewing machine needle according to claim 4, wherein the elastic member changes the adhesion force of the abutting portion to easily change and adjust a limit value of an upward force for escaping and moving the sewing machine needle. Mounting device.

6. The sewing machine according to claim 4, wherein a tip of the contact member is formed in a conical point.

7. The sewing machine needle mounting structure according to claim 1, wherein the recess formed in the sewing machine needle is formed in a conical shape.

[8] The needle locking mechanism is a contact member force having a clip-shaped elastic force. The contact member is a member that is in contact with the outside of the needle stopper by the elastic force, 2. The sewing machine needle mounting structure according to claim 1, comprising a member that sandwiches the sewing machine needle from a lateral side and comes into contact with the sewing machine needle.

[9] The machine needle mounting structure according to any one of claims 1 to 8, wherein the needle locking mechanism is provided at two locations.

[10] A needle portion having a needle hole, a handle portion having a diameter larger than that of the needle portion and capable of being inserted into a needle stopper, A sewing machine needle having a connecting portion between a needle portion and a handle portion, wherein a recess portion is formed in the handle portion for engaging and abutting a contact member on the needle stopper side. The sewing machine needle according to claim 10, wherein the concave portion formed in the sewing machine needle is formed in a conical shape.

11. The sewing machine needle according to claim 10, wherein the recess formed in the sewing machine needle is formed in a groove shape.