JPS6214314B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a sewing machine that can switch and display a plurality of figures representing the type of sewing work for which a pattern is to be selected, in groups at the same display location.

BACKGROUND OF THE INVENTION In recent years, sewing machines have become increasingly automated and multi-functional, and innovations have been made to allow a single sewing machine to efficiently perform a wide variety of sewing operations. One example of this is to make the pattern selection device electronic and to be able to select a desired stitch pattern from among a wide variety of sewing operations with a simple switch operation.

In the stitch pattern selection device, each figure representing each stitch pattern that can be sewn is written and displayed as a symbol, and a lighting lamp is provided corresponding to each symbol, and the lighting lamp is used to select the pattern. Generally, the stitch pattern represented by the symbol corresponding to the lighting position is selected by lighting the symbol according to the stitch operation. However, such conventional pattern selection devices require that all the symbols representing the stitch patterns that can be sewn by the sewing machine be written and displayed on the front of the sewing machine arm, which is the most logical place for pattern selection. However, because there is a limit to the space that can be used to display the symbols on the front of the sewing machine arm, there is a drawback that it is not possible to display all the corresponding symbols, especially when there are many types of stitch patterns. It was hot. Although it is possible to display many kinds of symbols in a small space in order to write them in a limited space, it is difficult to visually identify symbols with particularly complex shapes, which makes it difficult to select a seam pattern. be.

Purpose The present invention has been made against the background of the above-mentioned circumstances, and its purpose is to be able to display large figures representing many types of seam patterns in a limited space, and to select the seam work. Our goal is to provide a sewing machine that makes sewing easy.

Solution In order to achieve the above object, the sewing machine of the present invention has the following features:
In a sewing machine that can selectively perform a number of sewing operations that can be divided into a plurality of predetermined types of work groups, (1) the sewing machine is operable to select a desired group from the plurality of types of work groups; (2) a group selection device including a plurality of transparent plate portions on which figures graphically representing the contents of each of the sewing operations are drawn, and a group selection device that corresponds to one sewing operation in each of the operation groups; (3) a display panel in which the laminated parts are arranged in parallel on the front side of the sewing machine, in which the laminated parts are stacked one on top of the other in a predetermined order according to the type of work group; (4) a lighting device including a plurality of light sources corresponding to each work group and defining a guide path for respectively guiding light from each light source to each transparent plate section belonging to each work group; (4) by operating the operating member; an operating device for selecting and operating a light source corresponding to one of the selected work groups; (5) a work selection for selecting a desired sewing work in the work group selected by operating the operating member; It is configured to include a device.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. In FIG. 1, a horizontal sewing machine arm 1 is provided with a head 2 and a pedestal 3 at both ends thereof, and the pedestal 3 is erected on a base 4 so as to cantilever the sewing machine arm 1. A sewing needle 5 is provided at the lower end of the head 2, and is moved up and down as the sewing machine main shaft (not shown) rotates, and is positioned laterally by a needle position drive mechanism 32 in FIG. A needle hole 6 through which a sewing needle 5 is inserted is formed in the base portion 4 of the dot, and around the needle hole 6, a feed adjuster drive mechanism 33 shown in FIG. A feed dog 7 whose feed amount can be adjusted is provided.

On the front surface of the sewing machine arm 1, as shown in an enlarged view in FIG. A display panel 8 is provided, and an LED lamp 9 serving as a work instruction light emitter and a work selection operation switch 10 are provided in positions close to the upper and lower sides of the display area, respectively. On the left side of the display panel, three work group selection push button switches 11a, 11b, and 11c, which are group selection devices including operating members for selecting and operating work groups, are provided, and on the right side, a two-digit LED numerical display is provided. A device 12 and a function push button switch 13 below it are provided.

As shown in FIG. 3, the display panel 8 includes three transparent acrylic resin plates 15a, 15b and 15b, which are fixed to each other in a laminated manner with a fixed gap between them by a support frame 14. 15c. Furthermore, acrylic resin plates 15a, 1
Indicator lamps 16a, 16b, 16c which are light sources provided on one end surface of 5b and 15c, respectively, and the vicinity of these indicator lamps so as to effectively block irradiation light other than the light directed toward the corresponding end surface. It is formed by a light shielding plate 17 fixed to a support frame 14 of
The light from each indicator lamp 16a, 16b, 16c is transmitted to acrylic resin plate 15a, 15b, 15c, respectively.
The illumination device includes three guide paths 19 for guiding. Acrylic resin plates 15a, 15
As shown in the display panel 8 of FIGS. 4, 5, and 6, on the surfaces of b and 15c, the practical sewing work group A, the decorative sewing work group B, and the special sewing work group C are shown. divided into 10 each
It is engraved with figures representing different types of seam patterns.
Therefore, for example, when the display lamp 16a for displaying work group A is lit, the irradiation light guided to the guide path 19 enters one end surface of the acrylic resin plate 15a corresponding to the lit part, and the engraving is performed. In the areas where there is no mark, this incident light reaches the opposite end face by total reflection, and hardly leaks from the front and rear faces of the acrylic resin plate 15a. However, since the light passing through the engraved part representing the shape is refracted at the part and propagates toward the front of the acrylic resin plate 15a, the worker can see the 10 types of practical sewing work group A as if it were a light-emitting part. The image can be clearly seen with the naked eye. Since the acrylic resin plate is transparent, such display can be sufficiently performed even through other acrylic resin plates whose end faces are not illuminated. According to such a display panel 8, LEDs and
The display part itself is cheaper than an LCD dot matrix display, and it has the advantage of not requiring a complicated control circuit to combine multiple light emitting parts to selectively emit light to display a figure. be. Furthermore, since the displayed figure is not a mosaic, it has the advantage of displaying a natural phenomenon composed of free curves.

Further, the work selection operation switch 10 is operated to select the stitch pattern represented by the figure displayed above it, and when the switch 10 is operated, the LED lamp at the corresponding position is turned on. 9 lights up to indicate that the stitch pattern work represented by that figure has been selected. Further, each switch 10 is assigned a number from 0 to 9, and when a work group C, which will be described later, is selected and a function push button 13 is operated, a switch 10 is used to set the dimensions of the stitch pattern or the number of stitches. Operated as a numerical input key. The LED numerical display device displays the set numerical value in this case. 18 is a start/stop push button switch of the sewing machine.

FIG. 7 is a block diagram showing the control circuit of the sewing machine having the external appearance as described above, in which the work group selection pushbutton switches 11a, 11b, and 11c are connected to a decoder 20 and a light emitter selection drive circuit 21, which is an operating device, respectively. The decoder 2
0 outputs a coded group signal SG representing a work group (A to C) corresponding to the operation signal of each push button and supplies it to the sewing control device 22.
The light emitter selection drive circuit 21 operates the work group selection push button switch 1 operated based on the operation signal.
Indicator lamps 16 corresponding to 1a, 11b, 11c
A lamp drive current is supplied to any one of a, 16b, and 16c for continuous lighting.

Each work selection operation switch 10 has a decoder 24.
A navel operation signal is supplied, and the decoder sends a selection signal SS, which is a code signal representing the work content (stitch pattern) of the selected position corresponding to the operation signal of each push button, to the input port L of the multiplexer 25 and the latch. The signal is supplied to the input port L of the circuit 26 and the multiplexer 27, and a signal indicating that any of the work selection operation switches 10 has been operated is supplied to the AND circuit 28. Note that the code signal output from the decoder 24 is also a numerical signal SN when the work selection operation switch 10 is used as a numerical input key.

On the other hand, the function push button switch 13 supplies an operation signal to the T-type flip-flop circuit 29.
A set signal representing the set state of the flip-flop circuit 29 is sent from the output terminal Q of the flip-flop circuit 29 to the input terminal CK of the AND circuit 28 and the latch circuit 26.
and port select terminal P of multiplexer 25
At the same time, a reset signal representing the reset state of the circuit 29 is supplied from the output terminal to the reset input terminal R of the flip-flop circuit 30. The output signal of the AND circuit 28 is supplied to the set input terminal S of the flip-flop circuit 30, and the reset signal is supplied from the output terminal of this circuit 30 to the port select terminal P of the multiplexer 27.

The latch circuit 26 temporarily stores the selection signal SS received at its input terminal CK, and supplies the stored contents to the input port H of the multiplexer 25. Input port H depending on whether the signal is at “H” level or “L” level.
and the display drive control circuit 23 by selecting one of the signals supplied to the input port L, respectively.
and is supplied to the sewing control device 22. Similarly, the multiplexer 27 selects one of the signals supplied to the input port H and the input port L, respectively, according to the input signal level to the port select terminal P, and controls the display drive control circuit 23 and the sewing control circuit. Supplied to device 22.

The display drive control circuit 23 lights up the LED lamp 9 at the position of the stitch pattern represented by the input selection signal SS, and also lights up the LED lamp 9 at the position of the stitch pattern shape represented by the input selection signal SS.
The numerical value represented by SN is displayed on the LED numerical display device 12. That is, the display drive control circuit 23 is a work instruction drive circuit for displaying the work selected by the work selection operation switch 10.
The circuit 23, the LED lamp 9, and the work selection operation switch 10 constitute a work selection device.

The sewing control device 22 receives the input group signal.
The work group represented by SG and the input selection signal
The stitch pattern to be sewn is determined based on the selected position indicated by SS, the needle position command signal SH indicating the needle position for forming the stitch pattern, and the feed adjuster position command indicating the feed adjuster position. signal
The SF is sequentially generated in synchronization with the rotation of the main shaft of the sewing machine and supplied to the sewing drive control circuit 31. Further, the device 22 is connected to the working group C indicated by the group signal SG.
, the sewing drive control circuit 31 sends the needle position command signal SH and the feed adjuster position signal SF so as to form a stitch pattern according to the stitch pattern dimensions and number of stitches set by the input numerical signal. and a pre-stored numerical signal SN representing the most commonly used dimensions of the stitch patterns in the determined working group C and the settings for the number of stitches is supplied to the input port H of the multiplexer 27. Also, when work group C is not selected,
A blanking signal SB for blanking the LED numeric display device 12 is supplied from the device 22 to the display drive control circuit 23.

The sewing drive control circuit 31 supplies drive power to the needle position drive mechanism 32 to position the sewing needle 5 at the needle position indicated by the input needle position command signal SH, and also supplies drive power to the needle position drive mechanism 32 to position the sewing needle 5 at the needle position indicated by the input needle position command signal SH. Drive power is supplied to the feed adjuster drive mechanism 33 to position the feed adjuster at the position represented by F. By performing such positioning every rotation cycle of the main shaft of the sewing machine, a desired stitch pattern can be formed.

The operation of this embodiment will be explained below.

When the sewing machine is powered on, the control circuit shown in FIG. 3 is initialized and the flip-flop circuits 29 and 30 are reset. As a result, multiplexer 25 selects input port L, and multiplexer 27 selects input port H, respectively.

When the work group selection push button switch 11a is operated, a group signal representing work group A is activated.
SG is supplied from the decoder 20 to the sewing control device 22, and the light emitter selection drive circuit 21 supplies a lamp drive current to the display lamp 16a. Therefore, as shown in the display panel 8 of FIG.
Ten types of practical stitches belonging to work group A, such as straight stitches and zigzag stitches, are displayed. In this state, when the work selection operation switch 10 at the figure position representing the desired stitch pattern is operated, the multiplexer 25 has selected its input port L, so the work content (stitch pattern) at the selected position is operated. A selection signal SS representing the pattern) is supplied to the display drive control circuit 23 and the sewing control device 22. The display drive control circuit 23 turns on the LED lamp 9 at the selected position indicated by the signal SS to display that the sewing work indicated by the figure at that position has been selected. At this time, when the start/stop push button switch 18 is operated and the sewing machine main shaft is rotated, the sewing control device 22 issues a needle position command for forming the stitch pattern specified by the group signal SG and the selection signal SS. The signal SH and the feed adjuster position signal SF are sequentially supplied to the sewing drive control circuit 31 to perform the desired stitch forming operation. In this case, since the blank signal SB is supplied from the sewing control device 22 to the display control circuit 23, the LED numeric display device 12 does not operate.

When the work group selection push button switch 11b is operated, decorative stitches such as satin switches belonging to the work group B are selected by the same operation as in the work group A described above, as shown on the display panel 8 in FIG. 10 types of figures representing the work contents are displayed, and by operating the work selection operation switch 10, the desired sewing work in the work group is selected by the same operation as in the case of work group A described above. It is carried out with

When the work group selection push button switch 11c is operated, the program settings belonging to work group C are selected as shown in the display panel 8 of FIG. Ten types of shapes are displayed that represent the details of special sewing work. That is, buttonhole sewing width setting 36, buttonhole sewing number setting 37, button attaching number setting 33, button attaching width setting 3
9. Bar tacking width setting 40, bar tacking stitch number setting 41, seam allowance setting 42, tacking stitch number setting 4
3. Images representing the single stitch pause interval setting 44 and the blind pattern interval setting 45 are displayed. Next, when a work selection operation is performed by the work selection operation switch 10, the selected desired sewing work is performed in accordance with the same operation as in the above case, and the multiplexer 27 is also connected to the input port H. At the same time, the sewing control device 22 supplies the input port H with a numerical signal SN representing the set values of the most commonly used dimensions and number of stitches for the selected stitch pattern, so that the display drive circuit 23 numerical signal
The set numerical value represented by SN is displayed on the LED numerical display device 12, and the sewing control device 22 outputs command signals SH and SF so as to form a stitch pattern according to the set numerical value.

Furthermore, when performing sewing work by changing the setting values of the stitch patterns included in work group C, in addition to the above operations, press function push button switch 1.
After operating 3, the work selection operation switch 10 is operated in accordance with the numerical value attached to it to set the numerical value. That is, when the function push button 13 is operated, the T-type flip-flop circuit 29 is set, the AND circuit 28 is opened, the selection signal SS is temporarily stored in the latch circuit 26, and the multiplexer 25 is caused to select its input port H. Therefore, the selection signal SS representing the selected position within the displayed figure is sent to the multiplexer 2.
5 to the display drive control circuit 23 and the sewing control device 22. Next, when the operating switch 10 is operated to set a numerical value, the flip-flop circuit 30 enters the set state and causes the multiplexer 27 to select its input port L, so that the numerical signal SN output from the decoder 24 is sent to the multiplexer 27. The signal is supplied to the display drive control circuit 23 and the sewing control device 22 via the display drive control circuit 23 and the sewing control device 22. As a result, the set numerical value represented by the numerical signal SN is displayed on the LED numerical display device 12 by the same operation as described above, and the selected desired sewing operation is changed to the dimension and the size of the desired value set by the setting operation. It is done based on numbers.

As described above, the sewing machine of this embodiment is provided with a display panel 8 capable of dividing various types of sewing operations into three groups and displaying figures representing the contents of the number of sewing operations belonging to one of the groups. Since it is possible to selectively display a group of figures for each work group on panel 8, sewing machine arm 1
In the limited space on the front of the sewing machine, various patterns can be displayed in a large size, making it easy to select sewing tasks. Moreover, each work group has practical sewing,
Since decorative stitches and special stitches are classified according to their purpose, the frequency of selecting and switching operations for work groups is extremely reduced, and the burden of such operations is eliminated.

It goes without saying that the above-mentioned embodiment is merely one embodiment of the present invention, and the present invention should not be construed as being limited thereto.

For example, the number of work groups and the number of types of sewing work included in each group can be changed in various ways depending on the sewing function of the sewing machine, so that the number of sewing work in each work group is different. It is also possible to configure the display panel 8.

Furthermore, in the control circuit of the above-described embodiment, the circuit portions other than the so-called input/output devices such as push buttons, operation switches, and display devices may be configured such that the whole or part of the circuits are included in a so-called microcomputer. be.

Furthermore, the numeric display device 12 and lamp 9 are LED
Other display elements such as fluorescent displays, LCDs, EL and filament displays may also be used. The transparent plate portion of the display panel 8 can be made of not only acrylic resin but also a transparent material such as a glass plate or a PVC plate, and the shape engraved on the surface representing the sewing work content may be concave or convex There is no problem in forming it either way.

Effects As described in detail above, the present invention is equipped with an inexpensive sewing work selection device that can display a large variety of shapes representing sewing work contents in a limited display space and that facilitates the selection of sewing work. This results in excellent effects that can be provided by sewing machines.

[Brief explanation of the drawing]

FIG. 1 is an external view of a sewing machine according to an embodiment of the present invention. FIG. 2 is an enlarged view of the main parts near the display panel of the embodiment shown in FIG. FIG. 3 is a sectional view showing the main parts near the display panel of the embodiment shown in FIG. 4 to 6 are explanatory diagrams showing examples of the operation of the display panel etc. shown in FIG. 2. FIG. 7 is a block diagram showing the control circuit of the embodiment of FIG. 1. 9: LED lamp (light emitter for work instructions) (work selection device), 10: Operation switch (work selection device),
23: Display drive control circuit (work instruction drive circuit) (work selection device), 8: Display panel, 11a,
11b, 11c: Work group selection push button switch (group selection device), 15a, 15b, 15c:
Acrylic resin plate (transparent plate part), 16a, 16b,
16c: Display lamp (light source) (illumination device), 19:
Guideway (lighting device), 21: Light emitter selection drive circuit (operating device).

Claims (1)

[Claims] 1. In a sewing machine that can selectively perform a number of sewing operations that can be divided into a plurality of predetermined types of work groups, a desired group is selected from the plurality of types of work groups. a group selection device including an operation member that can be operated for the purpose of the operation, and a plurality of transparent plate portions on which figures graphically representing the content of each of the sewing operations are drawn, the device corresponding to one sewing operation in each of the operation groups. A display panel in which a laminated part in which transparent plate parts are laminated back and forth in a predetermined order according to the type of work group is arranged in parallel on the front side of the sewing machine, and a display panel for illuminating the shape of the transparent plate part for each of the tasks a lighting device that includes a plurality of light sources corresponding to groups and defines a guide path for guiding light from each light source to each transparent plate section belonging to each work group; and the work selected by operating the operation member. A sewing machine comprising: an operating device that selects and operates a light source corresponding to one of the groups; and a task selection device that selects a desired sewing task in the selected task group by operating the operating member. 2. The work selection device includes an operation switch that can be operated to select a desired sewing work from the work group selected by operating the operation member;
The display panel includes a plurality of work instruction light emitters disposed close to each laminated portion of the display panel, and a work instruction drive circuit that selectively lights up the plurality of light emitters in response to the operation of the operation switch. A sewing machine according to claim 1, comprising the following.