JP4047728B2 - Slide fastener sewing device and method for sewing cushion product using the fastener sewing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sewing device for a slide fastener composed of a two-needle sewing machine, and in particular, in a cushion product in which a cushion material is filled from an opening into a bag-like material sewn such as a cushion, a stuffed animal, or a pillow Sewing the guide cloth and slide fastener at the same time to facilitate the filling of the cushion material into the bag-like material, and double sewing of the slide fastener to prevent leakage of the cushion material filled inside. The present invention relates to a sewing device capable of efficiently performing work at once and a method for sewing a cushion product using the sewing device.
[0002]
[Prior art]
In general, a double-needle sewing machine is used for sewing work of a slide fastener that can freely open and close an opening provided in a cloth to be sewn. For example, in Japanese Patent Application Laid-Open No. 61-203903 (Patent Document 1), right and left fastener stringers (fastener tapes) in a slide fastener are simultaneously sewn to a slide fastener attachment portion of a cloth to be sewn such as a curtain, a tent, and clothes. A device to wear has been proposed. This device dissociates the fastener element in advance and twists the fastener stringer to sew the slide fastener on the fabric to be sewn with the fastener elements positioned on the outside. The slider (mouse) is held at a position close to the landing station, and the slider moves relative to the slide fastener as the slide fastener moves, so that the engagement of the fastener elements is automatically and sequentially dissociated. . The two fabrics to be sewn whose ends are abutted so that the sewing fastener parts of the slide fastener face each other are transferred in a substantially horizontal direction on the table of the two-needle sewing machine toward the sewing station. While synchronizing with the transfer of the sewing fabric, the slide fastener is inclined obliquely from above and transferred to the sewing station, whereby both are sewn together.
[0003]
Moreover, as an apparatus which sews a slide fastener to a to-be-sewn material, maintaining the mesh | engagement of a fastener element, the apparatus shown by Unexamined-Japanese-Patent No. 7-171280 (patent document 2) is mentioned, for example. In this apparatus, the cloth to be sewn is supplied to the sewing station while obliquely descending from the upper side of the fastener chain with respect to the long fastener chain supplied to the sewing station from below the table of the two-needle sewing machine. A placing plate is provided for guiding the fabric to be sewn and pressed by a drive endless belt unit disposed on the placing plate surface.
[0004]
On the other hand, in the sewing work of the slide fastener, there is a disadvantage that the slider protruding from the fastener surface easily swings in the feeding direction and the cloth to be sewn is easily displaced. In Patent Document 3, a guide groove is provided on the surface of the needle plate and a space is also provided in the presser foot to prevent displacement of the cloth to be sewn by feeding it while guiding the slider.
[0005]
[Patent Document 1]
JP-A-61-203903
(Claims, Detailed Description of the Invention, FIG. 1)
[Patent Document 2]
JP-A-7-171280
(Claims, Detailed Description of the Invention, FIG. 1)
[Patent Document 3]
JP 7-246293 A
(Claims, Detailed Description of the Invention, FIGS. 7 and 8)
[0006]
[Problems to be solved by the invention]
Slide fasteners frequently used in sewing products are frequently used for filling cushions in cushion products such as cushions, stuffed animals, pillows, etc., but they are fine particles like powder beads, which have gained popularity in recent years. In the case of using this cushioning material, there was an accident in which the filled cushioning material would inadvertently flow out if the slider moved even slightly in the finished product and the engagement of the fastener elements was dissociated. As a measure to prevent such an outflow of the cushion material, a method of reversing the opening direction of the first slide fastener and the opening direction of the second slide fastener while sewing the slide fastener double, A method of arranging the lining inside the cushion rather than the fastener and sewing and sealing the lining after filling the cushioning material is conceivable, but the conventional slide fastener sewing device automates such complicated sewing work. Was difficult.
[0007]
That is, each of the slide fastener sewing devices using the two-needle sewing machine sews one piece of cloth to be sewn to the left and right fastener tapes of one slide fastener. It was not envisaged to use a lining to sew on the outer lining, the zipper tape of the slide fastener, and sew the lining in that order, or sew the slide fastener in two layers, When trying to do so, the outer material, the lining, and the slide fastener were displaced, and the stitching was not constant. However, in the present invention, a plurality of slide fasteners can be sewed on one piece of fabric to be sewn in this way, or a lining can be provided on the back side of the slide fastener (on the opposite side of the fastener surface as the slider operation surface). To provide a slide fastener sewing device capable of automating sewing work that conventionally had to be relied on manually, such as sewing in layers, and a method for sewing cushion products quickly and beautifully using the device. It is to be an issue.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, a slide fastener sewing apparatus according to the present invention includes a sewing machine comprising a two-needle sewing machine having a substantially portal-shaped presser foot and a needle plate having a slider guide groove formed on the upper surface. A fastening station, a fastener guide that descends from the table toward the sewing station, and sends a slide fastener, and is disposed in front of the sewing station and disposed above the table. It comprised from the guide guide holding the right and left folding edge of the slide fastener sewing part in the to-be-sewn material.
[0009]
For example, when two slide fasteners are sewn together, the two slide fasteners are overlapped so that each slider is positioned on the opposite side in the longitudinal direction, and the back surface of the slide fastener faces upward, that is, the slider. Insert the fastener from the inlet side of the fastener guide with the operation part facing down. On the other hand, the fabric to be sewn is a fabric in which two fabrics are overlapped in advance and the side edges are sewn together leaving the length of the slide fastener while leaving an appropriate margin for sewing. As the left and right folded edges are positioned at the part where the two pieces of fabric are abutted, the table is fed toward the sewing station while holding the folded edge on the guide guide, and the presser foot and needle Invade between the boards. Since the slider portion of the slide fastener advances in the slider guide groove of the needle plate, the fabric to be sewn can be prevented from being inadvertently swollen.
[0010]
In the fastener guide, a lining placement plate can be extended from the upper surface. In this case, if the cloth to be sewn is used as the outer material, the outer material is further used as the outer material, the fastener tape for the slide fastener, the lining material Can be sewn in order. Of course, only one slide fastener to be sewn may be used, or two sheets may be used in an overlapping manner as described above. The lining placement board should be formed of a transparent and smooth synthetic resin board, etc. so as not to interfere with the setting of the fabric to be sewn. It is desirable that the left and right outer sides be curved upward slightly with the fastener guide as the center so as to be sent straight to the sewing station.
[0011]
The fastener guide has a substantially U-shaped cross section in which both the left and right side wall surfaces on the slide fastener delivery / outlet side face the opening, and the lower surface between the left and right side wall surfaces is a slider guide groove. It is preferable to have a structure in which two slide fasteners can be stacked and stored and delivered from the slide fastener introduction port side. Slide while holding the left and right fastener tape portions of one or two slide fasteners by forming at least the space between the left and right side wall surfaces on the slide fastener delivery port side in a substantially U-shaped cross section with the openings facing each other. Fasteners can be delivered smoothly, and the bottom surface between the left and right side wall surfaces is separated by the lateral width of the slider to form a slider guide groove, so that the slider that protrudes downwards into the slider guide groove in the needle plate Can lead.
[0012]
Furthermore, the fastener guide can be configured to be raised and lowered by a cylinder provided on an arm that supports the fastener guide. In order to accurately guide the slide fastener together with the fabric to be sewn into the sewing station, it is desirable that the slide fastener outlet of the fastener guide be positioned in the vicinity of the presser foot and the needle plate, but it is placed on the table. In the sewing preparation work that guides the fabric to be sewn between the presser foot and the needle plate through the guide guide, the presence of the fastener guide becomes an obstacle, so when setting the fabric to be sewn, raise the fastener guide. On the other hand, after the cloth to be sewn is set, the fastener guide is lowered and the slide fastener delivery port is positioned in the vicinity of the presser foot.
[0013]
An air discharge port can be disposed from above between the generally portal pressers at the sewing station. When a thin lining is sewn at the same time, by blowing air from above the lining, lifting of the lining is prevented, and a stable sewing can be obtained.
[0014]
Further, the sewing method of the cushion product according to the present invention uses a lining having a substantially rectangular shape and a length covering at least one side of the slide fastener while using the fastener sewing apparatus, and includes a cloth to be sewn, a slide fastener, and a lining. After overlapping and sewing in this order, incision is made at the position corresponding to the fastener element in the lining, and only the lining is folded and overlapped with the incised portion as the center, and the two opposite sides of the overlapped lining are sewn and cylinders Sew a bag-like material with the material to be sewn as the outer material, and then fill the bag-like material with the cushion using the cylindrical lining pulled out from the slide fastener opening to the outer material side as a guide. The lining having the open end sealed later is returned from the slide fastener opening to the inside of the bag.
[0015]
As the lining, it is desirable to use a thin fabric that does not impair the tactile sensation from the outside even when returned to the inside of the bag. Moreover, as a sealing method of the open end part of the lining, in addition to a sealing method by sewing, a sealing method by a heat sealing tape or the like can be adopted.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic perspective view showing an example of a slide fastener sewing apparatus according to the present invention. As shown in the drawing, a slide fastener sewing apparatus according to the present invention includes a sewing station S that is a two-needle sewing machine that is disposed on a table T and includes a presser foot S1 and a needle plate S2, and the sewing station. A fastener guide F that descends from the table T toward S and sends out slide fasteners, and a guide guide G disposed in front of the sewing station S and above the table T are schematically configured. .
[0017]
FIG. 2 is a partially enlarged perspective view of the vicinity of the presser foot in the sewing station S of FIG. The presser foot S1 has a substantially portal shape with two legs S11 and S11 spaced apart, and the distance between the legs S11 and S11 is set to be wider than the width of the engaged fastener elements in the slide fastener. Has been. Needle holes S12 and S12 through which the needles H and H of the two-needle sewing machine pass are formed at the distal ends of the legs S11 and S11. In the needle plate S2 positioned below the presser foot S1, a slider guide groove S21 corresponding to the lateral width of the fastener slider is engraved in a substantially central portion of the upper surface along the feeding direction of the cloth to be sewn. .
[0018]
Furthermore, an air discharge port S3 is provided between the two left and right feet S11, S11 in the presser foot S1 from above. The air sent out from the air outlet S3 works to suppress the lining by wind pressure so that the lining swells between both feet S11 and S11 in the presser foot S1 and does not grab the heel when sewing thin lining simultaneously. Play. Therefore, it is preferable that the air discharge port S3 is disposed above the presser foot S1 and in the vicinity of the tips of the two legs S11 and S11.
[0019]
A guide guide G is arranged in front of the sewing station S. The guide guide G of the present example is a one-step lower end of the support arm G1, which is extended substantially parallel to the upper surface of the table T from a position away from the sewing station S so as not to hinder the delivery of the fabric to be sewn. It is provided in the part, and has a configuration in which two guide plates G2, G2 are arranged in parallel via a gap G3.
[0020]
FIG. 3 is a partially enlarged longitudinal sectional view showing a state in which the sewing fabric C is set on the guide guide G. As described above, the cloth C to be sewn set in the fastener sewing apparatus according to the present invention is formed by stacking two pieces of cloth, leaving a sewing margin of an appropriate width, and leaving the length of the slide fastener between side edges. When the cloth surface is spread down to the left and right with the seam C1 as the center, left and right folded edges C2 and C2 equivalent to the sewing allowance width appear on the front side at the part where the two cloths meet. Therefore, the folding edges C2 and C2 are positioned above the guide plates G2 and G2 in the guide guide G, and the seam C1 is lightly tightened by the gap G3, and the table T is fed toward the sewing station S. The first step of the sewing work is performed by intruding between the presser foot S1 and the needle plate S2.
[0021]
In order to further improve the working efficiency, the holding operation of the material to be sewn C by the guide plates G2 and G2 of the guide guide G can be automated. For example, in FIG. 3, a guide plate G2 located on the right hand side is configured to be slidable by an air cylinder so as to ensure a wide gap G3, while the fabric to be sewn C follows the guide plate G2 located on the left hand side. For example, a configuration in which the air cylinder extends and the right hand side guide plate G2 lightly sandwiches the seam C1 of the fabric C to be sewn is exemplified.
[0022]
FIG. 4 is an enlarged perspective view of a fastener guide in the fastener sewing apparatus of FIG. 1. The fastener guide F of this example is formed by bending a single metal plate, and the slide fastener introduction port F1 side has a substantially concave shape in cross section consisting of a bottom surface portion F11 and side wall surfaces F12 and F12 rising from both ends. Although the side wall surfaces F12, F12 are gradually bent inward from the middle in the longitudinal direction, the slide fastener delivery port F2 located on the sewing station S side has the upper portion inside while leaving the side wall surface slightly. The side wall surfaces F21 and F21 have substantially U-shaped cross-sections that are bent in a straight line and face each opening. A slider guide groove F22 is formed on the bottom surface between the substantially U-shaped side wall surfaces F21 and F21.
[0023]
The intermediate portions F24 and F24 where the side wall surfaces F12 and F12 which are gradually bent from the middle in the longitudinal direction reach the side wall surfaces F21 and F21 having a substantially U-shaped cross section on the slide fastener delivery port F2 side are covered with the inside. Overhangs. When the slide fastener advances in the fastener guide F, the tip portion of the slide fastener, which has a slightly raised cross section due to the presence of the fastener slider, may be lifted up. It suppresses the lifting of the slide fastener tip and plays a role of guiding it smoothly until the fastener slider is dropped into the slider guide groove F22.
[0024]
As shown in FIG. 1, the fastener guide F is arranged so as to be inclined down from the table T toward the sewing station S. The lining placement plate P is located on the upper surface of the fastener guide F. It is extended. The lining placement plate P of this example is formed by mounting a transparent synthetic resin plate on the fastener guide F, and has a substantially shield shape in plan view with a slightly narrower tip on the sewing station S side. The left and right sides are slightly upwardly curved with the position of the fastener guide F as the center. In order to facilitate the insertion of the slide fastener into the fastener guide F, a rectangular opening P1 is formed in a part of the lining placement plate P so that about half of the introduction port F1 side of the fastener guide F is exposed. . Then, both members are fixed so that the feed port F2 side of the fastener guide F protrudes from the front end of the backing mounting plate P.
[0025]
Thus, the fastener guide F accompanied with the lining placement plate P is supported by the arm A pivotally attached to the sewing machine body M provided with the sewing station S, and is a cylinder that connects the arm A and the sewing machine body M. It is formed by R so that it can be raised and lowered. In the fastener sewing apparatus of the example of FIG. 1, the first arm A1 pivotally attached to the sewing machine main body M via the rotation shaft M1 is connected to the sewing machine main body M and the first cylinder R1 so as to be movable up and down. Yes. Further, a second cylinder R2 is disposed near the tip of the first arm A1, and the second arm A2 is connected through the second cylinder R2. Further, the slide fastener introduction port F1 side of the fastener guide F is fixed to the second arm A2, and the slide fastener delivery port F2 of the fastener guide F is in the lowered state in which both the first cylinder R1 and the second cylinder R2 are extended. It is set so as to be closest to the sewing station S.
[0026]
On the other hand, when the first cylinder R1 and the second cylinder R2 are contracted, the first arm A1 and the second arm A2 are both lifted, and the slide fastener delivery port F2 of the fastener guide F is most separated from the sewing station S. The presser foot S1, the needle plate S2, and the guide guide G are exposed and easily visible. Therefore, it is possible to prevent the presence of the fastener guide F from interfering with the setting work of the sewing fabric C. In particular, when both the arm A and the cylinder R are composed of two members as in the fastener sewing apparatus of the present example, not only a simple arc operation around the rotation axis M1 with the sewing machine body M but also the fastener guide F itself. Therefore, in the raised position where both cylinders R1 and R2 are contracted, not only can the sewing station S and the outlet F2 side of the fastener guide F be separated from each other, but also the table T and the fastener guide. A large space can be secured between F and F, and the setting work of the fabric to be sewn C becomes easy.
[0027]
Next, a procedure for sewing the slide fastener on the cloth to be sewn using the fastener sewing apparatus according to the present invention having the above-described configuration will be described. As described above, as a preparation for the fabric C to be sewn, the side edges of the two fabrics are sewn together, leaving the length of the slide fastener, and the fabric surface is centered on the seam C1. The left and right folded edges C2 and C2 are spread upward and the folded edges C2 and C2 are positioned above the guide plates G2 and G2 in the guide guide G, and the seam C1 is held by the gap G3. The table T is fed toward the sewing station S to enter between the presser foot S1 and the needle plate S2 (see FIG. 3).
[0028]
When two slide fasteners are combined and sewn in a double layer, the slide fasteners that have been combined in the fastener guide F (from the opening P1 when the lining placement plate P is provided) are fastener sliders. Is inserted so that it is located on the lower side (with the back side facing upward). At this time, the first slide fastener is overlapped so that the opening direction of the second slide fastener and the opening direction of the second slide fastener are located on the opposite side in the longitudinal direction of the slide fastener.
[0029]
If a fine granular material such as powder beads is used as the cushion material, the cushion material may leak from the gap between the upper and lower portions of the fastener tape and the fabric C to be sewn in the slide fastener. It is preferable to sew together zipper tapes or the like between the fastener tapes that are outside the upper and lower clasps and separated in the left and right directions.
[0030]
After the slide fastener is set in the fastener guide F, the first cylinder R1 and the second cylinder R2 are extended, the first arm A1 and the second arm A2 are lowered, and the fastener guide F is located near the sewing station S. While slightly pulling out the slide fastener from the slide fastener delivery port F2, it enters between the presser foot S1 and the needle plate S2 to operate the sewing machine.
[0031]
At this time, since the number of stitches of the sewing machine (number of stitches) can be counted separately by a counter, the number of stitches may be set according to the length of the slide fastener to be sewn. If a sensor is installed below the slider guide groove F22 in the fastener guide F to detect the moment when the rear end portion of the slide fastener passing through the slider guide groove F22 is removed, the slide The sewing machine can be stopped when the sewing of the slide fastener is completed, with the setting that the sewing is retracted and re-advanced based on the position of several mm from the fastener's bottom clasp. It is optional to set the thread trimming simultaneously with the sewing machine stop. In addition, if necessary, the sewing operation is completed by applying back stitches to both ends of the slide fastener.
[0032]
When the fastener sewing apparatus according to the present invention described above is used, the cushion material filling operation in the cushion product can be simplified while the lining is effectively used, and the filled cushion material can be prevented from flowing out. That is, regardless of the number of slide fasteners to be sewn, after the slide fastener is inserted and set in the fastener guide F, the lining is placed on the lining placement plate P, and the leading edge of the lining is aligned with the leading edge of the sliding fastener. Inserting between the presser foot S1 and the needle plate S2 while aligning with the previously-inserted cloth to be sewn, the sewing machine is operated, and the cloth to be sewn, the slide fastener, and the lining are overlapped and sewn in this order. During the operation of the sewing machine, air is continuously blown to the surface of the lining from the air discharge port S3 disposed downward from above between the substantially portal pressers S1.
[0033]
The lining used here is selected to have a substantially rectangular shape and a length that covers at least one side of the slide fastener. After the sewing machine stops and thread trimming is performed automatically or manually, the lining at the position corresponding to the fastener element in the slide fastener is torn with a blade, and only the lining is overlapped with the incision as the center, and the state is overlapped. Then, two opposing sides that are the front and back of the lining (the front end side and the rear end side of the slide fastener) are sewn and formed into a cylindrical shape.
[0034]
After sewing around the outer fabric to be sewn and sewing the bag-like material, operate the slider of the slide fastener to disengage the engagement of the fastener element, and pass the fabric to be sewn from the fastener opening. When the front side is exposed, a bag-like material is obtained, but when only the lining is pulled out from the fastener opening, the lining becomes a cylindrical shape with the slide fastener as the opening. The cylindrical lining pulled out from the slide fastener in this way is used as a guide instead of the funnel, and after filling the bag material with a cushioning material, the open end located at the upper end of the lining (ie opposite to the slide fastener) Seal and return to the inside of the cushion and close the slide fastener to complete the cushion product. The sealing of the open end can be performed by sewing or heating the heat-sealing tape with an iron or the like. In the cushion product thus completed, the inside of the cushion product becomes a sealed space by the lining with the opening end completely sealed, so even if it opens due to an incorrect operation of the slide fastener, the accidental escape of the cushion material will be prevented It can be done.
[0035]
【The invention's effect】
According to the slide fastener sewing device according to the present invention, the slide fastener is double-sewn into the opening for filling which is effective as a measure for preventing the outflow accident of the cushion material such as fine powder beads filled in the cushion product. Even when the method is adopted, it can be finished beautifully by a single sewing operation, which can contribute to simplification of work processes and cost reduction. And according to the sewing method of the cushion product using this slide fastener sewing apparatus, not only can the cushioning material be efficiently filled using the cylindrical backing, but also the open end of the cylindrical backing after filling. By sealing the part, it became possible to completely prevent the outflow accident of the cushion material.
[0036]
Further, in the slide fastener sewing device according to the present invention, when the lining placement plate is extended from the upper surface of the fastener guide, the lining is smoothly supplied and sewn without grasping the heel, and the slide fastener delivery port The left and right side wall surfaces of the side are made substantially U-shaped in cross-section, and the bottom surface between these left and right side wall surfaces is made a slider guide groove while making the opening opposite to each other. Can be supplied.
[0037]
Furthermore, the fastener guide is configured so as to be raised and lowered by a cylinder provided on an arm that supports the fastener guide, so that the work for setting the cloth to be sewn is not hindered. By lowering the fastener guide and positioning the slide fastener delivery port in the vicinity of the presser foot, a smoother and more reliable slide fastener delivery operation is realized.
[0038]
When air outlets are installed from above between the generally gate-shaped presser foot at the sewing station, especially when thin lining is sewn, lifting of the lining is prevented and stable sewing is achieved. There are benefits to be gained. As described above, in the slide fastener sewing apparatus according to the present invention, a series of complicated slide fastener sewing operations that have been conventionally performed manually or by sewing in a plurality of steps can be performed stably at one time. It was possible to finish beautifully.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an example of a slide fastener sewing apparatus according to the present invention.
FIG. 2 is an enlarged perspective view of the vicinity of a presser foot in the sewing station of FIG. 1;
FIG. 3 is a partially enlarged longitudinal sectional view showing a state in which a material to be sewn is set on a guide guide.
4 is an enlarged perspective view of the fastener guide of FIG. 1. FIG.
[Explanation of symbols]
A Arm
A1 first arm
A2 Second arm
C Sewing fabric
C2 folded edge
F Fastener guide
F1 Slide fastener inlet
F2 slide fastener outlet
F22 Slider guide groove
G Information Guide
G1 support arm
G2 guide plate
G3 gap
H needle
M sewing machine body
R cylinder
R1 first cylinder
R2 2nd cylinder
S Sewing station
S1 Presser foot
S2 throat plate
S21 Slider guide groove
T table

Claims (6)

A sewing station composed of a two-needle sewing machine having a substantially portal-shaped presser foot and a needle plate with a slider guide groove formed on the upper surface, and a slide fastener that is slanted down from the table toward the sewing station A fastener guide that feeds out and a guide guide that holds the left and right folded edges of the slide fastener sewing portion in the cloth to be sewn disposed in front of the sewing station and placed above the table and placed face down. A slide fastener sewing device composed of: The fastener sewing apparatus according to claim 1, wherein a lining mounting plate is extended from the upper surface of the fastener guide. The fastener guide has a substantially U-shaped cross section in which the left and right side wall surfaces on the slide fastener delivery / outlet side face each other, and the bottom surface between the left and right side wall surfaces is a slider guide groove. The fastener sewing apparatus according to any one of claims 1 and 2, wherein two slide fasteners can be stacked and stored and delivered from the fastener introduction port side. The fastener sewing apparatus according to any one of claims 1 to 3, wherein the fastener guide is configured to be raised and lowered by a cylinder provided in an arm that supports the fastener guide. The fastener sewing apparatus according to any one of claims 1 to 4, wherein an air discharge port is disposed between the substantially gate-shaped pressers from above. Using a lining with a length of at least one side that covers the slide fastener, and stitching the fabric to be sewn, the slide fastener, and the lining in this order, cut the position corresponding to the fastener element on the lining, Fold only the lining around the lining, sew two opposite sides of the lining to form a cylinder, sew a bag-like material with the fabric to be sewn on, and then slide fasteners Using the cylindrical lining pulled out from the opening to the outer side as a guide, the bag material is filled with a cushioning material, and after filling, the lining with the open end sealed is returned from the slide fastener opening to the inside of the bag. A method for sewing a cushion product using the fastener sewing apparatus according to any one of claims 1 to 5.

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