WO2019035475A1 - Fastener and manufacturing method thereof - Google Patents

Abstract

The present invention provides a fastener and a manufacturing method thereof, the fastener being provided with a tape, and a plurality of elements provided on the tape, wherein: an insert pin, a box, and a box pin in the box are provided to an end portion of the fastener in the vertical direction; a reinforcing portion for reinforcing the tape is provided around the insert pin, the box, and the box pin, and the reinforcing portion is provided with a cutout portion; the tape is provided with a tape recess portion; and at least a portion of the tape recess portion protrudes with respect to the cutout portion in at least one among the vertical direction of the fastener or the left-right direction of the fastener. In the fastener of the present invention, at least a portion of the tape recess portion is provided so as to protrude with respect to the cutout portion, so that during use of the fastener by a user, it is possible to eliminate or reduce discomfort when the user touches a hard reinforcing portion positioned at an edge of the tape recess portion.

Description

Fastener and method of manufacturing the same

The present invention relates to a fastener and a method of manufacturing the same.

FIG. 1 shows a part of a general fastener 1 and provided with a butterfly bar 3, a box 4 and a box bar 5 provided in the box 4 at the longitudinal end of the tape 2. The hinges 3 can be inserted into the receptacle of the box 4. When the slider is pulled to the lowermost position of the fastener 1 along the element 9, the hinge rod 3 can be pulled out of the box 4 to separate and open the fastener 1. Such fasteners are often used for clothes such as down jackets and jackets. When performing the operation of the fastener 1, always hold the tape 2 around the butterfly rod 3 with one hand and the tape 2 around the box 4 with the other hand. It must be made.

Although the tape 2 itself is usually relatively soft, in order to facilitate the insertion and removal operation, a reinforcing portion 6 such as a film or a cloth is attached to the tape 2 around the butterfly rod 3, the box 4 and the box rod 5. Reinforce the hardness of FIG. 2 schematically shows that the reinforcing portion 6 is attached to the tape 2, and the reinforcing portion 6 may be a film, a cloth or the like, and is adhesively fixed to the tape 2.

In order to attach the butterfly bar 3, the box 4 and the box bar 5, a tape recess 7 is usually additionally provided at the longitudinal end of the tape 2. The reinforcements 6 are also correspondingly shaped as the cutouts 8 in order to keep them in line with the tape recesses 7. When a person operates the fastener 1 by hand, the user touches the tape recess 7 and the cut-out portion 8 to know whether or not his or her hand has reached the periphery of the butterfly bar 3 or the box 4.

FIG. 3 is a schematic view showing a manufacturing process of a conventional fastener. In the manufacturing process of the fastener, first, the element 9 is formed on the tape 2 (see FIG. 3A), and then the reinforcing portion 6 is attached to the tape 2 (see FIG. 3B). Cut using a cutter etc., and form a cut hole for attaching the butterfly rod 3, box 4 and box rod 5 (see FIG. 3 (c)), and the butterfly rod 3, box 4 in this cut hole , And attach the box bar 5 (see FIG. 3 (d)) and finally cut the continuous stringer (see FIG. 3 (e)). In FIG. 3 (e), a tape recess 7 is formed in the tape 2, and a cutout 8 is formed in the reinforcing portion 6.

Since the hardness of the reinforcing portion 6 and the hardness of the tape 2 are different, the range in which the tape 2 and the reinforcing portion 6 are cut in the process of cutting may be different. For this reason, the tape recess 7 and the cut-out portion 8 may not completely coincide with each other, the reinforcing portion 6 may protrude from the tape 2, and the accuracy is not high. In addition, since the reinforcing portion 6 is relatively hard, when the reinforcing portion 6 protrudes from the tape 2, when the human hand touches the tape recess 7, it strikes the relatively hard reinforcing portion 6 located at the edge of the tape recess 7. There may be discomfort. Due to the cutting, burrs or the like may be present at the cut edge of the cut portion 8.

Japanese Utility Model Application Publication No. 62-153907 Japanese Patent Application Laid-Open No. 2-128702 China Authorization notice CN2624677Y China authorization notice CN100417514C

The present invention has been made exactly based on the above-mentioned problems, and it is an object of the present invention to eliminate or reduce the discomfort when a user touches a hard reinforcement located at the edge of a tape recess in the process of using a fastener. And a method of manufacturing the same.

The fastener according to the first solution of the present invention comprises a tape and a plurality of elements provided on the tape, and at the end in the vertical direction, a butterfly bar, a box, and the box A fastener provided with a box bar, wherein a reinforcing portion for reinforcing the tape is provided around the butterfly bar, the box, and the box bar, and the reinforcing portion is cut away A portion of the tape is provided with a tape recess, and at least a portion of the tape recess is at least one of the up-down direction of the fastener and the left-right direction of the fastener with respect to the cutout. It is provided protruding in the direction.

A tape recess provided to be protruded when the user uses the fastener by providing at least a part of the tape recess with respect to the cut portion in at least one of the vertical direction and the left and right direction. According to the fastener of the first solution of the present invention, in which the soft tape is touched at the position, the discomfort when the user touches the hard reinforcement located at the edge of the tape recess can be eliminated or reduced. .

Furthermore, in the fastener according to the second solution of the present invention, the cut-out portion has a first cut-out portion in the vertical direction and a second cut-out portion in the left-right direction, and the tape The recess is provided to protrude with respect to at least one of the first and second cut-out portions.

According to the fastener of the second solution of the present invention, it is possible to improve the feel of the user as long as the tape recess protrudes from one of the first and second cut-out portions.

Furthermore, in the fastener according to the third solution of the present invention, the tape recess is provided so as to protrude to both the first and second cut-out portions.

According to the fastener of the third solution of the present invention, the tape concave portion is provided to be protruded to both the first cut portion and the second cut portion, and the effect of further improving the tactile sensation can be achieved.

Furthermore, in the fastener according to the fourth solution of the present invention, the cut-off portion is a first cut-off portion in the vertical direction, a second cut-off portion in the horizontal direction, the first cut-out portion, and the first cut-out portion. And a bending portion connecting the two cutting portions, and the tape recess is provided so as to protrude with respect to at least one of the first cutting portion, the second cutting portion, and the bending portion.

According to the fastener of the fourth solution of the present invention, the user can feel the touch only if the tape recess is provided so as to protrude with respect to at least one of the first cut portion, the second cut portion, and the bent portion. Can achieve the effect of improving.

Furthermore, in the fastener according to the fifth solution of the present invention, the distance between the left side edge of the reinforcing portion and the first cut-out portion and the distance between the first cut-out portion and the left side edge of the box The ratio relationship between the two is in the range of 2: 1 to 3: 1.

According to the fastener of the fifth solution of the present invention, positioning of the finger of the user's hand is facilitated during use and the finger of the hand is placed in a suitable operating area.

The present invention is a method for producing a fastener for producing a fastener according to the first solution of the present invention, wherein the step of forming the plurality of elements on the tape, and the excision part is previously made. A step of attaching the reinforcing portion provided to the tape, cutting the tape and the reinforcing portion, and forming a cut hole for attaching the butterfly rod, the box, and the box rod; A process step in which the size of the cut hole is smaller than the size of the cut portion in at least one of the vertical direction of the fastener and the left and right direction of the fastener; the butterfly rod in the cut hole; And attaching the box bar, and at least one of the tape recess and the at least one of the up and down direction and the left and right direction with respect to the cut portion. And a step step of cutting the lateral direction to be provided to protrude in a direction, and further to provide a method of manufacturing a fastener.

According to the fastener manufacturing method of the present invention, at least a part of the tape recess of the manufactured fastener is provided so as to project relative to the cut-off portion, whereby the user locates at the edge of the tape recess in the process of using the fastener. It is possible to eliminate or reduce discomfort when touching a stiff reinforcing portion.

Furthermore, in the method of manufacturing a fastener according to the present invention, the dimension of the cut hole in the vertical direction is larger than the dimension of the cut portion in the vertical direction, and the dimension of the cut hole in the left and right direction is the cut portion. It is smaller than the dimension in the left and right direction. In the fastener manufactured by this manufacturing method, the tape concave portion is provided so as to project relatively small relative to the reinforcing portion, and the appearance is excellent by reducing the visual difference between this fastener and the ordinary fastener. Have.

Furthermore, in the method of manufacturing a fastener according to the present invention, the dimension of the cut hole in the vertical direction is smaller than the dimension of the cut portion in the vertical direction, and the dimension of the cut hole in the left and right direction is the cut portion. It is smaller than the dimension in the left and right direction. In the fastener manufactured by this manufacturing method, the tape concave portion is provided projecting to the reinforcing portion at the portion touched by the finger of the hand, and the discomfort when the user touches the hard reinforcing portion is eliminated. Or reduce.

Furthermore, in the manufacturing method of the fastener according to the present invention, the dimension of the cut hole in the vertical direction is equal to the dimension of the cut portion in the vertical direction, and the dimension of the cut hole in the left and right direction is the cut portion It is smaller than the dimension in the left and right direction. In the fastener manufactured by this manufacturing method, the tape concave portion is provided so as to protrude to the reinforcing portion at a portion where the finger of the hand is the most easy to touch, and the discomfort when the user touches the hard reinforcing portion is eliminated or Reduce.

It is a partial schematic view of a conventional fastener. It is the schematic which shows the lamination | stacking relationship of a reinforcement part and a tape. It is the schematic which shows the manufacturing process of the conventional fastener. FIG. 2 is a partial schematic view of the fastener of the present invention. It is a fragmentary schematic showing the relation between the reinforcement part of a fastener and tape in Embodiment 1 of the present invention. It is a fragmentary schematic showing the relation between the reinforcement part of a fastener and tape in Embodiment 2 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the manufacturing process of the fastener of this invention, (a) is a figure which shows the process of forming an element on a tape, (b) is a tape of the reinforcement part by which the excision part was previously provided. (C) is a figure which shows the process of cutting a tape and a reinforcement part and forming a cut hole, (d) is a figure which shows the process of sticking in a cut hole, a butterfly rod in a cut hole, a box, And (e) is a figure which shows the process of cutting a continuous stringer in the left-right direction. It is the schematic which shows another manufacturing process of the fastener of this invention, (a) is a figure which shows the process of forming an element on a tape, (b) is the reinforcement by which the cutting part is previously provided. It is a figure which shows the process of affixing a part to a tape, (c) is a figure which shows the process of cutting a tape and a reinforcement part, and forming a cut hole, (d) is a butterfly rod in a cut hole It is a figure which shows the process of attaching a box, and a box bar, and (e) is a figure which shows the process of cutting a continuous stringer in the left-right direction. It is the schematic which shows another manufacturing process of the fastener of this invention, (a) is a figure which shows the process of forming an element on a tape, (b) is the reinforcement by which the cutting part is previously provided. It is a figure which shows the process of affixing a part to a tape, (c) is a figure which shows the process of cutting a tape and a reinforcement part, and forming a cut hole, (d) is a butterfly rod in a cut hole It is a figure which shows the process of attaching a box, and a box bar, and (e) is a figure which shows the process of cutting a continuous stringer in the left-right direction. FIG. 8 is a partial schematic view of the fastener of the preferred embodiment of the present invention manufactured by the manufacturing process shown in FIG. 7;

Hereinafter, the fastener of the present invention and a method of manufacturing the same will be specifically described with reference to the drawings. In the following description, the terms are defined as follows: The vertical direction is the direction coinciding with the longitudinal direction of the fastener and the direction coinciding with the moving direction of the slider. The left-right direction is a direction coincident with the width direction of the fastener, and is a direction orthogonal to the up-down direction.

FIG. 1 is a partial schematic view of a conventional fastener 1. FIG. 2 is a schematic view showing the stacking relationship between the reinforcing portion 6 and the tape 2. FIG. 3 is a schematic view showing a manufacturing process of a conventional fastener. The present application is an improvement based on the conventional fastener, and in the following, with reference to FIGS. 4 to 10, the improvement of the present application over the conventional fastener will be mainly described.

FIG. 4 is a partial schematic view of the fastener of the present invention. An element 9 is formed on the tape 2, and a butterfly bar 3, a box 4 and a box bar 5 are formed at the lower end of the tape 2 in the longitudinal direction (vertical direction). Provided, the butterfly bar 3 can be inserted into the box 4 or withdrawn from the box 4. At peripheral positions of the butterfly bar 3, the box 4 and the box bar 5, reinforcing portions 6 are laminated on the tape 2. The reinforcing portion 6 may be a film, a cloth or the like, is adhesively fixed to the tape 2 and is used to reinforce the hardness of the soft tape 2. The reinforcing portion 6 extends in the vertical and horizontal directions from the butterfly bar 3, the box 4 and the box bar 5, and in the vertical direction, at least a part of the reinforcing portion 6, the butterfly bar 3, the box 4 and the box bar 5 Can overlap, and in the left-right direction, the reinforcement 6 can extend to the edge of the tape 2.

The tape 2 has a tape recess 7 which is recessed upward from the lower end of the tape 2 at a position close to the butterfly rod 3, the box 4 and the box rod 5. The dimension in which the tape recess 7 is recessed upward does not exceed the upper edge of the reinforcing portion 6. Preferably, the tape recesses 7 are provided symmetrically in the left-right direction around the box 4. The reinforcing portion 6 is provided with cut-out portions 8 in the vertical and horizontal directions, and the cut-out portions 8 have a first cut-out portion 10 in the vertical direction and a second cut-out portion 11 in the horizontal direction. At least a part of the tape recess 7 is provided so as to protrude with respect to the cutting portion 8 in at least one of the vertical direction and the left and right direction. That is, at least a portion of the tape recess 7 is provided so as to protrude with respect to the first cutout 10 and / or the second cutout 11.

Further, on the left side of the fastener, the distance between the left edge of the reinforcing portion 6 and the first cutaway portion 10 is L1, and the distance between the first cutaway portion 10 and the left edge of the box 4 is L2, preferably , L1 and L2 satisfy that L1 / L2 is in the range of 2: 1 to 3: 1. The dimensional relationship on the right side of the fastener is the same as on the left side. When the user uses the fastener, the finger of the hand reaches the periphery of the butterfly bar 3 or the box 4 by touching the portion within the L2 range of the reinforcing portion 6 with the finger of the finger. It can be grasped whether it is placed on the box 4 or not. In addition, by touching the portion of the tape recess 7 which is provided by protruding with respect to the cut-out portion 8 with the finger of the hand, it is possible to accurately determine the region in which the fastener can be operated. No discomfort caused by 6.

FIG. 5 is a partial schematic view showing the relationship between the reinforcing portion 6 of the fastener and the tape 2 in Embodiment 1 of the present invention. FIG. 5 shows only a partial schematic view of the left side of the fastener, and the manner of the right side of the fastener is the same as the left side, and is not shown. In FIG. 5, the cut-out portion 8 of the reinforcing portion 6 includes a first cut-out portion 10 in the vertical direction and a second cut-out portion 11 in the horizontal direction. The first cutaway portion 10 and the second cutaway portion 11 are both in the form of a straight line. The tape concave portion 7 is provided to protrude with respect to the first cutting portion 10 in the left-right direction. Although FIG. 5 shows an aspect in which the tape recess 7 is provided to protrude relative to the first cutting portion 10, the tape recess 7 may be provided protruding to the second cutting portion 11, or The tape recess 7 may be provided so as to protrude to both the first cutaway portion 10 and the second cutaway portion 11. That is, the tape concave portion 7 may be provided so as to protrude with respect to at least one of the first cutting portion 10 and the second cutting portion 11.

FIG. 6 is a partial schematic view showing the relationship between the reinforcing portion 6 of the fastener and the tape 2 in Embodiment 2 of the present invention. The FIG. 6 shows only a partial schematic view of the left side of the fastener, and the manner of the right side of the fastener is the same as that of the left side and is not shown. In FIG. 6, the cut-out portion 8 of the reinforcing portion 6 is between the first cut-out portion 10 in the vertical direction, the second cut-out portion 11 in the left-right direction, the first cut-out portion 10 and the second cut-out portion 11. And a bent portion 12 connecting the two. Although FIG. 6 shows an aspect in which the tape recess 7 is provided so as to protrude relative to the first cutaway portion 10 and the bending portion 12, the tape recess 7 is formed in the second cutaway portion 11 and / or the bended portion 12. It may be provided to protrude to the opposite side, and may be provided to protrude to the first cut portion 10, the second cut portion 11 and the bending portion 12 at the same time. That is, the tape concave portion 7 may be provided to protrude with respect to at least one of the first cutting portion 10, the second cutting portion 11, and the bending portion 12.

FIG. 7 is a schematic view showing the manufacturing process of the fastener of the present invention. In the manufacturing process, first, the element 9 is formed on the tape 2 (see FIG. 7A), and then the reinforcing portion 6 provided with the cut-out portion 8 in advance is attached to the tape 2 (FIG. After that, for example, cut using a cutter to form a cut hole for attaching the butterfly rod 3, the box 4 and the box rod 5, and the tape recess 7 is also formed by the cut (FIG. 7). (See c)) The dimension S2 of the cut hole in the left-right direction is smaller than the dimension S1 of the cut portion 8 in the left-right direction, and the dimension H2 of the cut hole in the vertical direction is the dimension H1 of the cut portion 8 in the vertical direction Attach the butterfly bar 3, box 4 and box bar 5 in the cut hole (see FIG. 7 (d)), and finally cut the continuous stringer in the left and right direction (FIG. 7 (e)) reference). As shown in FIG. 7 (e), the tape recess 7 is provided so as to protrude relatively small relative to the cutting portion 8. Specifically, the tape recess 7 includes the first and second cutting portions 10 and 11. It can be seen that all of them are provided with a relatively small protrusion.

FIG. 8 is a schematic view showing another manufacturing process of the fastener of the present invention. In the manufacturing process, first, the element 9 is formed on the tape 2 (see FIG. 8A), and then the reinforcing portion 6 provided with the cut-out portion 8 in advance is attached to the tape 2 (FIG. After that, for example, cut using a cutter to form a cut hole for attaching the butterfly rod 3, box 4 and box rod 5, and the tape recess 7 is also formed by the cut (FIG. 8). (See c)) The dimension S2 of the cut hole in the left-right direction is smaller than the dimension S1 of the cut portion 8 in the left-right direction, and the dimension H2 of the cut hole in the vertical direction is the dimension H1 of the cut portion 8 in the vertical direction Smaller than this, install the butterfly bar 3, box 4 and box bar 5 in the cut hole (see FIG. 8 (d)) and finally cut the continuous stringer in the left and right direction (FIG. 8 (e)) reference). As shown in FIG. 8E, it can be seen that the tape recess 7 is provided so as to protrude from the cutaway portion 8 in the vertical and horizontal directions.

FIG. 9 is a schematic view showing another manufacturing process of the fastener of the present invention. In the manufacturing process, first, the element 9 is formed on the tape 2 (see FIG. 9A), and then the reinforcing portion 6 provided with the cut-out portion 8 in advance is attached to the tape 2 (FIG. After that, for example, cut using a cutter to form a cut hole for attaching the butterfly rod 3, the box 4 and the box rod 5, and the tape recess 7 is also formed by the cut (FIG. 9). (See c)) The dimension S2 of the cut hole in the left-right direction is smaller than the dimension S1 of the cut portion 8 in the left-right direction, and the dimension H2 of the cut hole in the vertical direction is the dimension H1 of the cut portion 8 in the vertical direction Install the butterfly bar 3, box 4 and box bar 5 in the cut hole (see FIG. 9 (d)) and finally cut the continuous stringer in the left and right direction (see FIG. 9 (e)) ). As shown in FIG. 9E, it can be seen that the tape recess 7 is provided so as to protrude from the cutting portion 8. Of course, in FIG. 9C, the dimension H2 in the vertical direction of the cut hole may be larger than the dimension H1 in the vertical direction of the cut portion 8.

7-9 illustrate the process of manufacturing the fastener of the present invention, but is not limited thereto. The dimension of the cut hole may be smaller than the dimension of the cutout 8 in at least one of the vertical direction and the lateral direction. For example, the tape concave portion 7 protrudes in the vertical direction and the lateral direction with respect to the cutting portion 8 by adjusting the dimension in the vertical direction and the lateral direction of the cutting portion 8 or by adjusting the dimension and the position of the cutting hole You can control the position.

Although the cutting part 8 shown by FIGS. 7-9 is provided only with the 1st cutting part 10 in an up-down direction and the 2nd cutting part 11 in the left-right direction, it is not limited to this, either, The said cutting part 8 may include a bending portion connecting the first cutting portion 10 and the second cutting portion 11, and the tape recess 7 may be formed by the first cutting portion 10, the second cutting portion 11 and the bending portion of the cutting portion 8. It may be provided projecting to at least one of the parts.

Hereinafter, the preferred embodiment of the present invention will be more specifically described with reference to FIG. The fastener of the preferred embodiment of the present invention is manufactured by the manufacturing process shown in FIG. 7, which is a partially enlarged view of the fastener in FIG. 7 (e). In the manufacturing process shown in FIG. 7, the dimension in the left-right direction of the cut-out portion 8 of the reinforcing portion 6 is S1, the dimension in the left-right direction of the cut hole is S2, and the dimension in the vertical direction of the cut-out portion 8 is H1. The dimensions of the cut hole in the vertical direction are H2, and these dimensions satisfy the relationship of S1> S2 and H1 <H2. In the fastener shown in FIG. 10 which is obtained by the manufacturing process shown in FIG. 7, the tape is provided so as to protrude from the first cutaway portion 10 in the vertical direction and the second cutaway portion 11 in the lateral direction, The projecting range is relatively small, and by reducing the visual difference between the fastener of the preferred embodiment and the normal fastener, the fastener of the preferred embodiment of the present invention has excellent appearance.

As mentioned above, although the fastener of this invention and its manufacturing method were demonstrated, above-mentioned these embodiment is not a restriction | limiting with respect to this invention, Those skilled in the art can make a various change based on the content which this invention discloses. However, any of these modifications remain within the protection scope of the present invention.

This application is based on the Chinese patent application (201710709426.8) filed on August 18, 2017, and the Chinese utility model application (201721035121.5) filed on August 18, 2017, and The contents are incorporated herein by reference.

Reference Signs List 1 fastener 2 tape 3 butterfly rod 4 box 5 box rod 6 reinforcement 7 tape recess 8 cut out 9 element 10 first cut out 11 second cut out 12 bent

Claims (9)

It has a tape and a plurality of elements provided on the tape, and a fastener provided with a butterfly bar, a box, and a box bar provided in the box at the end in the vertical direction There,
A reinforcing portion for reinforcing the tape is provided around the butterfly bar, the box, and the box bar,
A cutting portion is provided in the reinforcing portion,
The tape is provided with a tape recess,
At least one part of the said tape recessed part is protruded and provided in the at least 1 direction among the up-down direction of the said fastener with respect to the said cutting part, and the left-right direction of the said fastener. The cutting portion has a first cutting portion in the vertical direction and a second cutting portion in the left and right direction,
The fastener according to claim 1, wherein the tape recess is provided to protrude with respect to at least one of the first and second cut-out portions. The fastener according to claim 2, wherein the tape recess is provided so as to protrude to both the first cut-out portion and the second cut-out portion. The cutting portion includes a first cutting portion in the vertical direction, a second cutting portion in the lateral direction, and a bending portion connecting the first cutting portion and the second cutting portion. Yes,
2. The fastener according to claim 1, wherein the tape recess is provided to protrude with respect to at least one of the first cutting portion, the second cutting portion, and the bending portion. The distance between the left side edge of the reinforcing portion and the first cut-out portion and the distance between the first cut-out portion and the left side edge of the box have a ratio relationship between them of 2: 1 to 3: 1. 5. Fastener according to any of the claims 2 to 4, characterized in that it is in the range. A method for producing a fastener for producing the fastener according to claim 1;
Forming the plurality of elements on the tape;
Affixing the reinforcing portion provided with the cut-out portion in advance to the tape;
The tape and the reinforcing portion are cut to form a cut hole for attaching the butterfly rod, the box, and the box rod, and at least one of the vertical direction of the fastener and the lateral direction of the fastener A process step in which the size of the cut hole is smaller than the size of the cut portion;
Attaching the butterfly bar, the box, and the box bar into the cut hole;
Cutting in the left-right direction such that at least a part of the tape recess is provided to protrude in at least one of the up-down direction and the left-right direction with respect to the cutting portion;
A method of manufacturing a fastener, comprising: The dimension of the cut hole in the vertical direction is larger than the dimension of the cut portion in the vertical direction,
The method according to claim 6, wherein a dimension of the cut hole in the left-right direction is smaller than a dimension of the cut portion in the left-right direction. The dimension of the cut hole in the vertical direction is smaller than the dimension of the cut portion in the vertical direction,
The method according to claim 6, wherein a dimension of the cut hole in the left-right direction is smaller than a dimension of the cut portion in the left-right direction. The dimension of the cut hole in the vertical direction is equal to the dimension of the cut portion in the vertical direction,
The method according to claim 6, wherein a dimension of the cut hole in the left-right direction is smaller than a dimension of the cut portion in the left-right direction.

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