JP2002282566A - Buttonhole sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buttonhole sewing machine capable of satisfactorily performing a button hole sewing. SOLUTION: A button hole presser member 1 has a base part 2 having a guide extended along the longitudinal direction of a buttonhole, a movable part 3 provided on the guide of the base part 2 slidably along the longitudinal direction of the buttonhole, a fixed part 4 for fixing the movable part 3 to the base part in an optional slide position so that the fixation is releasable, and a button diameter display part 6 provided in the boundary region between the base part 2 and the movable part 3. The button diameter display part 6 has a button start end display part 61 provided on one of the base part 2 and the movable part 3 to display the start end 80a of a button diameter, and a button terminal end display part 65 provided on the other of the base part 2 and the movable part 3 to display the terminal end 80c of the button diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buttonhole sewing machine for sewing around a buttonhole in which a button is inserted and hooked.

[0002]

2. Description of the Related Art Conventionally, a buttonhole holding member having a button diameter detecting function for detecting the diameter of a button, and a side stitch length of the buttonhole are defined based on the button diameter detected based on the button diameter detecting function. A buttonhole stitch sewing machine having a stipulating portion is known (Japanese Patent Application Publication No. Sho 62
-40035, published in 1987).

According to this, as shown in FIG. 6, a button engaging portion 120 is provided on the end of the buttonhole pressing member 100 in the length direction of the buttonhole.
The button engaging portion 120 is provided with the buttonhole holding member 100.
A first engagement contact portion 121 having a V-shaped groove 121a held in the first engagement contact portion 121, and a first protrusion having a V-shaped groove 122a slidably held to face the first engagement abutment portion 121. And two engagement contact portions 122. First engagement contact portion 121
The second engagement contact portion 122 forms a button storage chamber 124.

When the buttonhole sewing is performed, the second engagement contact portion 122 is moved in the lengthwise direction of the buttonhole (arrows M1 and M1) in a state where the button is housed in the button housing chamber 124.
By sliding the button along two directions), the button is sandwiched between the V-groove 121a of the first engagement contact portion 121 and the V-groove 122a of the second engagement contact portion 122. Thereby, the button diameter is detected.

[0005] During the buttonhole sewing, the buttonhole pressing member 100 moves along the length of the buttonhole. At this time, the buttonhole holding member 100 is attached to the switching sensor lever 200 derived from the sewing machine.
Abuts on the switching sensor lever 20 as a regulating part.
A switching signal from 0 is sent to the control device of the sewing machine, and the buttonhole pressing member 100 moves in the reverse direction, whereby the length of the side stitch of the buttonhole is automatically defined.

[0006]

According to the above-mentioned prior art, the first engagement contact portion 121 and the second engagement contact are provided at the end of the buttonhole pressing member 100 along the length direction of the buttonhole. A contact portion 122 is provided. For this reason, at the time of buttonhole sewing, the first engagement contact portion 121 having a projection shape is provided.
There is a case where the second engagement contact portion 122 easily interferes with the sewing target, and it is difficult to perform the buttonhole sewing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a first engagement contact portion having a V groove and a second engagement contact portion having a V groove. Abolished the structure to be equipped on the end side along the length direction, adopted a structure to provide a movable part next to the base in the hole width direction of the buttonhole, and also displayed a button diameter on the boundary area between the base and the movable part By adopting the method of equipping
It is an object of the present invention to provide a buttonhole sewing machine in which the first engagement contact portion and the second engagement contact portion are prevented from interfering with buttonhole sewing.

[0008]

According to the present invention, there is provided a buttonhole sewing machine comprising: a buttonhole pressing member having a button diameter detecting function for detecting the diameter of a button; and a buttonhole based on the button diameter detection by the buttonhole pressing member. A buttonhole stitching machine having a defining portion that defines the length of the side stitching portion, a buttonhole pressing member includes a base portion having a guide extending along the length direction of the buttonhole;
A movable portion adjacent to the base in the width direction of the buttonhole and slidably provided on the guide of the base along the length direction of the buttonhole, and the movable portion is fixed to the base at an arbitrary sliding position so as to be releasably fixed to the base. It has a fixed part, a button diameter display part provided in a boundary area between the base part and the movable part, and the button diameter display part is provided on one of the base part and the movable part and displays a start end of the button diameter. And a button end display section provided on the other of the base section and the movable section to display the end of the button diameter.

According to the sewing machine of the present invention, the buttonhole holding member has a base having a guide extending along the length of the buttonhole, and is slidable on the guide of the base along the length of the buttonhole. A movable portion is provided and is provided adjacent to the base in the width direction of the buttonhole, and a fixing portion for fixing the movable portion to the base so as to be releasably fixed at an arbitrary sliding position. As described above, the movable portion is slidably provided on the guide of the base along the length direction of the buttonhole, but is adjacent to the base in the width direction of the buttonhole. As described above, since the movable portion is provided adjacent to the base in the width direction of the buttonhole, it is advantageous in reducing the length of the buttonhole suppressing member along the length direction of the buttonhole.

The use form of the sewing machine of the present invention will be described together with its operation. First, the start of the button diameter is set to the button start display, and the end of the button diameter is set to the button end display. Thus, the distance between the button start display section and the button end display section corresponds to the button diameter. Alternatively, after the diameter of the button is measured on a scale, the measured value may be made to correspond to the distance between the button start display section and the button end display section. Based on the button diameter thus detected, the length of the side stitch of the buttonhole is specified by the specifying unit.

According to the sewing machine of the present invention, the following mode can be adopted.

A scale display section for displaying the size of the button diameter is provided on one of the base and the movable section, that is, on the side of the base and the movable section on which the button start end display section is provided; Is preferred. It is preferable that the scale display section extends from the button start end display section along the sliding direction of the movable section. The scale display section may be a number indicating the size of the button diameter or a mark.

The fixed portion includes a first corrugated engagement portion formed on the base portion, a second corrugated engagement portion formed on the movable portion and detachable from the first corrugated engagement portion, and a first corrugated engagement portion. It is possible to adopt a form having an urging portion for urging in a direction for promoting the engagement between the portion and the second corrugated engagement portion and fixing the movable portion to the base portion with the urging. It is preferable that the first corrugated engagement portion and the second corrugated engagement portion extend continuously along the length direction of the buttonhole. The waveforms of the first and second waveform engaging portions may be triangular waves or arc waves.

The movable portion is provided on the guide of the base so as to be slidable along the length of the buttonhole, and is adjacent to the base in the width direction of the buttonhole. As described above, since the movable portion is provided adjacent to the base in the width direction of the buttonhole, it is advantageous in reducing the length of the buttonhole suppressing member along the length direction of the buttonhole.

The movable portion is provided so as to be swingable with respect to the base portion, and it is possible to adopt a form in which the movable portion can be released from being fixed to the base portion with the swing.
The swing direction is preferably a direction intersecting the length direction of the buttonhole.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described with reference to FIGS. First, the sewing of the buttonhole for inserting the button will be described. A buttonhole 100 having a predetermined length MA is formed in a sewing object such as a clothes base, into which a button is inserted. When sewing the buttonhole, first, the buttonhole 100
A first fastening portion 101 along the width direction of the buttonhole 100 is formed at one end 100r side in the length direction of the buttonhole 100. Next, a first side stitching portion 102, also called a side stitch along the length direction of the buttonhole 100, is inserted into the buttonhole 1
On one side in the width direction of No. 00, it is formed so as to be continuous with the first fastening portion 101. Next, a second fastening portion 103 along the width direction of the buttonhole 100 is formed on the other end 100s side in the length direction of the buttonhole 100. Next, by moving the sewing object in the reverse direction, the buttonhole 10 is moved.
0 second stitches, also called side stitches along the length direction
The side stitching portion 104 is formed on the other side in the width direction of the buttonhole 100 so as to be continuous with the second fastening stitching portion 103. The arrow B indicates the width direction of the buttonhole 100.

In this manner, buttonhole sewing is generally performed around the buttonhole 100 into which the button is inserted into the sewing object. The fastening portion 10 described above
1, 103 and the side stitching portions 102, 104 are formed by zigzag stitching. Depending on the diameter of the button, the buttonhole 100
Therefore, it is necessary to change the length size M of the first side seam 102 and the second side seam 104.

FIG. 2 shows a buttonhole pressing member 1 provided in the sewing machine according to the present embodiment. As shown in FIG. 2, the buttonhole holding member 1 according to the present embodiment
Has a base part 2, a movable part 2, and a fixed part 4 as main components. The base 2 includes a U-shaped frame 23 having a bottom plate 22 having a through hole 21, a holding stopper 24 for closing and holding one end opening of the frame 23, and a length of the buttonhole 100 in the frame 23. And a pressing portion 26 that is movable in the vertical direction (directions of arrows A1 and A2) and forms a needle insertion hole 25 through which the needle 25c is inserted. The frame body 23 has a groove-like guide 27 extending along the length direction of the buttonhole 100 (the directions of arrows A1 and A2). In some cases, the guide 27 is not limited to the groove shape but may be a protrusion shape.

The movable portion 3 is provided adjacent to the base 2 in the width direction of the buttonhole 100 (the direction of arrow B). The movable portion 3 includes a slide portion 31 having a slide plate 30 provided to be slidable along a length direction (arrows A1 and A2 directions) of the buttonhole 100 on the guide 27 of the base portion 2, and pivotally supported by the slide portion 31. An elongated lever portion 32 pivotally supported by pins 36 so as to be swingable in the directions of arrows B1 and B2 (corresponding to the width direction of the buttonhole).

The long lever portion 32 has a long shape along the side surface 23k of the frame 23 of the base 2. The long lever portion 32 has a rod-shaped operation projection 33 protruding upward.
Having. The operation protrusion 33 only needs to protrude so as to come into contact with the switching sensor lever 94 as described later. FIG.
As shown in (1), a gap 34 is formed between the base end portion 32m of the long lever portion 32 and the frame 23 of the base portion 2 to allow the long lever portion 32 to swing.

The fixed portion 44 is opposed to the first corrugated engagement portion 41 formed on the side surface of the frame 23 of the base 2 and the side surface of the frame 23 of the base 2 of the long lever portion 32 of the movable portion 3. And a bias provided between the long lever 32 and the frame 23 of the base 2. And a spring 44 as a part. The first waveform engagement portion 41 and the second waveform engagement portion 42
The buttonhole 100 extends continuously along the length direction of the buttonhole 100 (directions of arrows A1 and A2) so as to form a continuous wave shape. The spring 44 is connected to the pivot pin 3 of the long lever 32.
6, the portion 32p located on the opposite side to the second waveform engaging portion 42 is urged. Thereby, the spring 44 urges the second waveform engaging portion 42 of the long lever portion 32 in the direction of the arrow B1 (fixed direction), that is, the first waveform engaging portion 41 and the second waveform engaging portion. 42 in such a direction as to promote the engagement thereof. Although the spring 44 is a coil spring,
The present invention is not limited to this, and may be a leaf spring or a torsion coil spring.

As shown in FIG. 4, the proximal end portion 32 of the long lever portion 32 is
When m is pressed in the direction of arrow C1, the distal end portion 32r of the long lever portion 32 swings about the pivot pin 36 in the direction of arrow B2 (anti-fixing direction). By swinging the long lever portion 32 in this manner, the second waveform engaging portion 42 of the long lever portion 32 can be disengaged from the first waveform engaging portion 41 of the frame 23 of the base 2. Thereby, the fixation of the movable portion 3 to the base portion 2 can be easily released. When the fixing of the movable part 3 is released in this way, the slide plate 30 of the movable part 3 becomes slidable along the guide 27, and the movable part 3 can be slid to an arbitrary sliding position.

As described above, when the movable portion 3 is slid to an arbitrary slide position, pressing the base end portion 32m of the long lever portion 32 in the direction of arrow C1 with a fingertip or the like is released.
The tip 3 of the long lever 32 around the pivot pin 36
2r swings in the direction of arrow B1 (fixing direction), so that the second waveform engaging portion 42 of the long lever portion 32 is
The movable portion 3 can be fixed by engaging with the first waveform engaging portion 41.

As shown in FIG. 3, the button diameter display section 6 according to the present embodiment comprises a frame 23 of the base 2 and a movable section 3.
Is provided in the boundary region of the long lever portion 32. That is,
The button diameter display section 6 is provided on the frame body 23 of the base 2 by printing or engraving or the like, and displays a button start end display section 61 for displaying the start end 80a of the button diameter of the button. A scale display section 63 that extends from the button start end display section 61 along the sliding direction of the movable section 3 and displays the size of the button diameter of the button;
2 has a button end display section 65 that is provided by printing, engraving, or the like, and that displays the end 80c of the button diameter.

The button start display section 61 and the button end display section 65 may be any as long as they can be visually identified by the user. Although the scale display section 63 describes a number or a scale corresponding to the number, the invention is not limited to this, and any scale that can visually display the distance from the button start display section 61 to the button end display section 65 may be used. .

The usage of the sewing machine according to the present embodiment will be described together with its operation. First, a button to be inserted into the buttonhole 100 for buttonhole sewing is selected. Then, as shown in FIG. 3, the frame 23 of the base 2 and the movable portion 3
Put the button 80 on the boundary area of the long lever part 32,
Get closer. Furthermore, the starting end 80a of the button diameter of the button 80
To the button start display section 61 of the frame 23 of the base 2, and the end 80 c of the button diameter of the button to the button end display section 65.

In this case, the base end portion 32m of the long lever portion 32 is pressed in the direction of arrow C1 with the user's fingertip or the like to move the long lever portion 32 around the pivot pin 36 in the direction of arrow B2 (counterclockwise). By swinging the second wavy engaging portion 42 of the long lever portion 32 in the first direction of the frame 23 of the base 2
It is detached from the waveform engaging portion 41. In the state where the second waveform engaging portion 42 and the first waveform engaging portion 41 are disengaged in this manner,
The user slides the long lever portion 32 along the length direction of the buttonhole (the directions of the arrows A1 and A2) with the fingertip, and thereby the button end of the long lever portion 32 at the terminal end 80c of the button diameter of the button 80. The display unit 65 is adjusted.

When the button diameter of the button 80 is adjusted as described above, the base end 32m of the long lever portion 32 is pointed by an arrow C with a fingertip or the like.
The pressing operation in one direction is released. Accordingly, the long lever portion 32 swings about the pivot pin 36 in the direction of arrow B1 by the spring force of the spring 44. Therefore, the second waveform engaging portion 42 of the long lever portion 32 automatically engages with the first waveform engaging portion 41 of the base 2.

In this case, the distance E (see FIG. 3) between the button start display section 61 and the button end display section 65 corresponds to the button diameter of the button 80.

According to the present embodiment, after the user measures the button diameter of the button 80 using the scale as a ruler, the measured value is displayed between the button start display section 61 and the button end display section 65. You may make it correspond to distance. Also in this case, by swinging the base end portion 32m of the long lever portion 32 in the direction of arrow C1 with the user's fingertip or the like, the second waveform engaging portion 42 of the long lever portion 32 is moved in the direction of arrow B2. By swinging, the second waveform engaging portion 42 of the long lever portion 32 is disengaged from the first waveform engaging portion 41, and in this state, the user slides the long lever portion 32 in the direction of arrows A1 and A2 with a fingertip. Then, the button end display section 65 of the long lever section 32 is adjusted to the measured value. When the measured values are adjusted as described above, pressing the base end portion 32m of the long lever portion 32 in the direction of the arrow C1 with the user's fingertip or the like is released.
The movable portion 3 can be fixed to the base portion 2 by automatically engaging the second waveform engaging portion 42 of the long lever portion 32 with the first waveform engaging portion 41 by the urging force of the spring 44.

FIG. 5 shows a sewing machine. The buttonhole pressing member 1 according to the present embodiment is installed on a bed 90 of a sewing machine. 92 is a needle bar of the sewing machine, 93 is a needle held by the needle bar 92 of the sewing machine, and 94 is a buttonhole holding member 1.
The switch sensor lever 99 as a defining portion that contacts the operation protrusion 33 and outputs a signal, and 99 denotes a control device of the sewing machine to which a switch signal from the switch sensor lever 94 is input. The buttonhole holding member 1 is attached to a holding rod 97 of the sewing machine, and is moved by the holding rod 97 during buttonhole sewing. When sewing buttonholes,
The buttonhole holding member 1 includes a first fastening portion 101 and a second fastening portion 103, in addition to the extending direction of the first fastening portion 103 and the second fastening portion 103.
The direction of the side stitching portion 102 and the second side stitching portion 104 (arrow A
1, A2 direction). As described above, since the buttonhole pressing member 1 moves along the directions of the arrows A1 and A2, the operation protrusion 33 projecting from the movable lever portion 32 of the buttonhole pressing member 1 hits the switching sensor lever 94 (prescribed portion). , The switching sensor lever 94 outputs a contact signal. Then, the signal is input to the control device 99 of the sewing machine via a signal line (not shown), and the moving direction of the buttonhole pressing member 1 is turned. Based on this, the lengths of the side stitching portions 102 and 104 of the buttonhole 100 are defined.

As described above, according to the present embodiment,
The base 2 and the movable part 3 are adjacent to each other in the width direction of the buttonhole 100, and the button diameter display part 6 is
Of the buttonhole 100 in the width direction (arrow B direction) of the buttonhole 100 as described above, not in the end side along the length direction of the buttonhole 100. The new structure provided is adopted. Therefore, unlike the prior art, the first engagement contact portion and the second engagement contact portion, which are projections, are provided on the end side of the buttonhole pressing member 1 along the length direction of the buttonhole 100. The structure can be abolished. For this reason, the first engagement contact portion and the second engagement contact portion, which are projections, are prevented from interfering with buttonhole sewing.

Further, according to the present embodiment, as described above, the button diameter display section 6 is provided on the frame 23 of the base 2 by printing, engraving, or the like, and displays a button start end display section for displaying the start end of the button diameter of the button. 61, and a button end display section 65 provided on the long lever section 32 of the movable section 3 by printing, engraving, or the like to display the end of the button diameter. The scale display section 63 for displaying the size of the button diameter of the button is also provided on the frame 2 of the base 2.
3 is provided by printing or engraving. Printing like this,
Since the button diameter display portion 6 is formed by engraving or the like, unlike the above-described related art, the second engagement contact portion 122 is slid along the length direction of the buttonhole, thereby forming the protrusion-shaped second portion. It is not necessary to adopt a structure in which the button is sandwiched between the V groove 121a of the first engagement contact portion 121 and the V groove 122a of the projecting second engagement contact portion 122. This is advantageous in simplifying the mechanical structure of the button diameter display section 6 for detecting the button diameter.

In addition, the present invention is not limited to the embodiment described above and shown in the drawings, but can be implemented with appropriate modifications without departing from the scope of the invention.

(Supplementary Note) The following technical idea can be understood from the above description. A buttonhole holding member provided on the buttonhole sewing machine and having a button diameter detection function of detecting a button diameter, wherein the buttonhole holding member has a base having a guide extending along the length direction of the buttonhole; A movable portion adjacent to the base in the width direction of the buttonhole and slidably provided on the guide of the base along the length direction of the buttonhole, and the movable portion can be released from the base at any sliding position. It has a fixed part to be fixed, a button diameter display part provided in a boundary area between the base part and the movable part,
The button diameter display section is provided on one of the base section and the movable section, and displays a button start end display section that displays the start end of the button diameter, and the button end section that is provided on the other of the base section and the movable section and displays the end of the button diameter. A buttonhole holding member having a display section. It is preferable that a scale display section for displaying the size of the button diameter is provided on one of the base section and the movable section so as to extend from the button start end display section along the sliding direction of the movable section.

[0036]

According to the present invention, unlike the prior art,
The base portion and the movable portion are adjacent to each other in the width direction of the buttonhole, and the button diameter display portion is not at the end side of the base portion along the length direction of the buttonhole, but as described above. A novel structure is provided in the boundary area between the movable body and the base frame adjacent to each other in the direction. Therefore, unlike the above-described prior art, the button diameter display portion (that is, the first engagement contact portion 121 and the second engagement (Corresponding to the contact portion 122). Therefore, interference between the sewing object and the buttonhole pressing member is reduced, and the buttonhole sewing is easily performed on the buttonhole.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a buttonhole sewing process.

FIG. 2 is a plan view of a buttonhole pressing member shown together with a side surface of a movable lever unit.

FIG. 3 is a plan view of a buttonhole holding member showing a state where a button diameter of a button is adjusted to a button diameter display section provided in a boundary area between a base and a movable section.

FIG. 4 is a plan view of a buttonhole pressing member showing a state in which a movable lever portion is swung to separate a first waveform engaging portion and a second waveform engaging portion.

FIG. 5 is a side view schematically showing a main part of the sewing machine.

FIG. 6 is a perspective view schematically showing a main part of a sewing machine provided with a buttonhole pressing member according to the related art.

[Explanation of symbols]

In the figure, 1 is a buttonhole holding member, 2 is a base, 3 is a movable part, 4 is a fixed part, 6 is a button diameter display, 61 is a button start display, 63 is a scale display, and 65 is a button end display. , 94 indicate a switching sensor lever (defining portion).

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Ito 2-1-1 Asahimachi, Kariya-shi, Aichi F-term in Aisin Seiki Co., Ltd. 3B150 AA07 AA24 CE01 CE03 CE09 CE22 CE23 CE25 EB03 EB13 GD25 QA01

Claims (3)

[Claims] A buttonhole pressing member having a button diameter detecting function of detecting a diameter of a button; and a defining portion for defining a length of a side stitching portion of the buttonhole based on detection of the button diameter by the buttonhole pressing member. In the buttonhole stitching machine having the above, the buttonhole pressing member is provided with a base having a guide extending along the length direction of the buttonhole, and slidably provided on the guide of the base along the length direction of the buttonhole. And a movable part adjacent to the base in the width direction of the buttonhole, a fixed part for fixing the movable part to the base so as to be releasably fixed at an arbitrary sliding position, and a boundary area between the base and the movable part. A button diameter display unit provided, wherein the button diameter display unit is provided on one of the base unit and the movable unit and has a start end of a button diameter. A buttonhole sewing machine comprising: a button start end display section for displaying; and a button end end display section provided on the other of the base section and the movable section to display an end of a button diameter. 2. A waveform according to claim 1, wherein said fixed portion has a first waveform engaging portion formed on said base portion and a second waveform formed on said movable portion and capable of engaging and disengaging with said first waveform engaging portion. An engagement portion;
A biasing portion for biasing the first waveform engaging portion and the second waveform engaging portion in a direction to promote the engagement, and fixing the movable portion to the base with the biasing. Buttonhole stitch sewing machine. 3. The movable part according to claim 1, wherein the movable part is provided so as to be swingable with respect to the base, and the movable part can be released from being fixed to the base with the swing. A buttonhole stitch sewing machine characterized by the following.