JPS6043144B2 - Sewing machine pattern selection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a sewing machine that operates a stitch forming mechanism to form a desired stitch pattern based on a signal from an electronic storage device that stores sewing information for a large number of different stitch patterns. The present invention relates to a pattern selection device for a sewing machine that selects one stitch pattern from among the stitch patterns by operating a single operating means.

Conventionally, when selecting patterns in the above-mentioned sewing machines, so-called electronic sewing machines, it has been known to provide selection switches corresponding to individual patterns, or to sequentially shift patterns using a single selection switch. However, in the former method, a large number of selection switches are required to correspond to the stitch patterns, resulting in high costs and disadvantages such as taking up a lot of space on the sewing machine, and in the latter method, Since the shifting interval is constant, when the interval is long, it takes a long time to select the pattern, and when the interval is short, when selecting the desired pattern, the shift may go too far than the desired pattern and the pattern may have to go around again. Since one has to be careful about shifts, there is a drawback that work efficiency is significantly reduced.

This invention aims to eliminate the drawbacks of the above-mentioned conventional ones.

To explain an embodiment of the present invention with reference to the drawings, a display section 2a corresponding to each stitch pattern is provided on the front end surface of the sewing machine arm section 1.
, 2b... 22 are arranged in a row along the horizontal direction.
Light-emitting members 4a, 4b...42 are provided on the top, and the display section on the left end of FIG. 1 shows the most frequently used straight stitches,
Display sections 2a, 2B, and 2c corresponding to Ξ specific stitch patterns of buttonhole stitching and zigzag stitching are provided, and the three display sections 2a, 2b, and 2c each have individual selection buttons 5, 6, and 7.
Place.

In addition, a shift selection button 8 for fast forwarding and a shift selection button 9 for slow forwarding are separately arranged. Next, the electric circuit shown in FIG. 2 will be explained.

SWl is a normally closed switch that corresponds to shift selection button 8 for fast forwarding, SW2 is a normally closed switch that corresponds to shift selection button 9 for slow forwarding, and SW3 to SW5 correspond to individual selection buttons 5 to 7. It is a normally closed switch. G
When the L level is input to the R terminal, the output is 30rI.
It is a pulse oscillator that oscillates an H level pulse at a constant period of 1 sec, and is a timer circuit that oscillates a pulse of 450 msec, which is longer than the pulse period of the T-M oscillator OS, and 0M1 and 0M2 are one-shot multi.

D●C is a decoder, and when inputting the Qa-Qd output of the binary counter CT (for example, TS) to the A-D terminal, the light-emitting diodes La-corresponding to each of the light-emitting members 4a-4z are activated in accordance with the input state. One of the output terminals is set to L level so as to turn on one of Lz.

The counter 0T counts when the input terminal T rises, generates a binary code output to the Qa-Qd terminals, connects the reset terminal to SW3, and also connects the load terminal e to the L level and any of the Da-Dd terminals. becomes H level, and when the T terminal rises, its output Qa-Qd becomes Da-
The output state corresponds to the Dd terminal. MC is a microcomputer that includes an electronic memory circuit (ROM) and a CPU, and selects and sews one of the stitch patterns stored in the memory circuit in response to the Qa-Qd outputs of the counter CT. It is possible to generate information to the eye forming mechanism.

G1 to G7 are IC gates, and I is an inverter. It is evening.

Next, the operation of this invention will be explained.

When shift selection button 8 for fast forwarding is pressed, SWl
becomes open, gate G1 becomes L output, and gate G
2 becomes the L output, so the oscillator 0, S is ・30rr1se
A pulse with period c is generated, gate G5 outputs L in accordance with the period, counter CT starts counting, and Qa
- Generates a binary code output to the Q emulator, which turns on the light emitting diodes h and z sequentially from La through the decoder DC, and the microcomputer M
The memory circuit C can also shift and select the corresponding stitch pattern to generate it. Counter C. ．． When T counts the fourth pulse, that is, when the Qa and Qb terminals are in the L, L state, the gate G6 becomes an H output, triggers the one-shot 0M1, and makes the Q terminal output an H output. , the timer circuits T and M are set to 45 by the rise of gate G4.
The Q terminal output is set to IH output for 0 msec. As a result, the R input terminal of the oscillator 0S becomes H level during that 450n1 sec, so the oscillation of the oscillation W)S is stopped.

Therefore, the light emitting diode continues to be on at the fourth Ld, the light emitting section 4d is turned on, and the memory circuit is also able to generate information on the stitch pattern corresponding to the pattern on the fourth Ld, that is, the display section 2d in FIG. stop in the state.

When the timer circuit TM returns after 450 rnsec has elapsed, the oscillator 0S(7)R terminal goes to L level and oscillates again. Similarly to the above, the counter CT counts four pulses and then starts the timer circuit TM. The operation of stopping for 450n1 sec depending on the output is repeated.

When the shift selection button 8 is released, SWl is closed and the gate G1 becomes an H output.
Oscillator G is counter CT when oscillation is stopped and released.
Select the stitch pattern that corresponds to the output. When the slow-forward shift selection button 9 is pressed, SW2 becomes open, gate G3 is opened, and gate G1 is set to L output, so gate G2 becomes L output, oscillator 0S oscillates, and the oscillation pulse closes gate G3. becomes an H output, the gate G4 becomes an H output, and the timer circuit TM is triggered.

When the counter CT counts the first pulse of the oscillator, the oscillator (T) is clocked for 450 rnsec by the timer circuit TM.
Oscillation is stopped for a while, and oscillation starts after 450 msec has passed)
S oscillates one pulse, which is counted by the counter CT, and the gate G3 is output to H, and the gate G4 is output to H.
becomes an output and triggers the timer circuit TM again. Therefore, while SW2 is in the open state, the counter CT is 450.
The pulses of the oscillator OS are counted at intervals of n1 sec, and the pattern is shifted and selected at the intervals. When the individual selection button 5 corresponding to straight stitching is operated, the SW3 is opened, the counter CT is reset, and the Qa-Qd output is returned to its initial state, that is, set to L, L, L, L, and the decoder ■, Select a memory circuit corresponding to straight stitching.

When the individual button 6 is operated, SW4 becomes open, the Da terminal of the counter CT becomes an H input, and the gate G7 becomes an H input.
As an output, one terminal of the counter CT becomes an L input via an inverter I, and one shot 0M2 becomes a T output, and when it falls after a predetermined time, the gate G5 becomes an H output, and therefore, the counter CT (7) Qa-Qd Output is terminal D
Output corresponding to a-Dd, i.e. 7, H, L. sL. ．． In the same way as counting the second pulse from the oscillator 0S at L, when the pattern corresponding to buttonhole sewing is selected and individual button 7 is operated in the same way, the D6 terminal of counter CT(7) becomes H. The input becomes the corresponding output, “゜L...H
．． ．． L. ．． Send L to terminals Qa to Qd to select a pattern corresponding to zigzag stitching. In the present embodiment, only shifting in the saw direction is possible by operating the shift selection buttons 8 and 9; however, shifting in both forward and reverse directions may be made possible by using a -DOWN counter. Further, instead of the timer circuit TM, a counter circuit may be used which generates a signal while counting the pulses of the oscillator corresponding to the same time.

Further, in this embodiment, the pattern unit is made up of four patterns, and the pattern stagnates when shifted to the fourth pattern, but it goes without saying that two or more patterns may be used as one unit.

As described above, according to the present invention, while operating the operating means 8, a predetermined number of patterns are made into one unit, the patterns therein are continuously shifted at predetermined time intervals, and then the last pattern of one unit is shifted. After staying at a shift position corresponding to a pattern for a longer time than the interval, repeat the operation of continuously shifting the next predetermined number of unit patterns, and release the operating means at the shifted position to shift the pattern corresponding to that shift position. By making it possible to select all patterns using a single operating means, costs can be reduced and the space of the sewing machine frame can be used widely, and the shift can be delayed for a predetermined period of time for each pattern. All you need to do is to continuously operate the operating means without paying attention to the pattern unit that includes the desired pattern, and pay attention to ensure that the pattern corresponding to the stagnant position is selected within that unit. By selecting frequently used patterns, the time required for selection can be shortened and work efficiency can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the sewing machine of this embodiment, and FIG. 2 is an electric circuit diagram.

Claims (1)

[Claims] 1 An electronic storage means CM that stores stitch information of a plurality of different stitch patterns, a display section 2 that corresponds to each stitch pattern stored in the storage means, and a display section that is arranged separately on the display section and corresponds to the selected pattern. a display means having a generating section 4 for notifying the display section to be displayed, an operating means 8 for generating a selection signal by operation, an oscillator OS for generating pulses at regular intervals in connection with the generation of the selection signal, and a pulse generator for the oscillator. a pattern shifting means for shifting the stitch pattern and the light emitting part of the storage means in accordance with the counted value, which is comprised of a counter CT for counting; A timer circuit TM that generates a stagnation signal for a certain period of time and a regulating means G2 that disables the pattern shifting means in relation to the stagnation signal, and a predetermined number of stitch patterns are generated in relation to the operation of the operating means. is one unit, and the patterns therein are shifted at predetermined intervals according to the count of the counter, and then the next predetermined number of unit patterns are successively shifted after the last pattern of one unit is stagnant for a time longer than the shift interval. A pattern selection device for a sewing machine that is characterized by: