JPS612878U

JPS612878U - sewing machine

Info

Publication number: JPS612878U
Application number: JP7340385U
Authority: JP
Inventors: ダブリユ．ウアーストジヨン; エフ．ミナルガフイリツプ
Original assignee: ザシンガ− コンパニ↓−
Priority date: 1985-01-25
Filing date: 1985-05-17
Publication date: 1986-01-09
Also published as: JPS6232541Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の原理に基づく構成を適用し得るミシン
の透明図、第２図は本考案の原理に基づいて構成される
回路の一例のブロック図テある。２（参照符号の説明）、・１１３・・・ＬＳＩ、１・
６１，１６’３，１６５，１６７，１６９，１７１・・
・フリツプフロツプ（カウンタ）、１４９，１５１・・
・分圧装置の抵抗、１３９・・・リレー、１４１，．１
４３・・・リレー接点（スイッチ）、２１・・・針棒解
放ソレノイド、２７・・・針横振り用直線アクチュ左一
タ、４３・・一送り用直線アクチュエータ、−１８１・
・・ＮＡＮＤゲート（検出装置）。FIG. 1 is a transparent diagram of a sewing machine to which a configuration based on the principles of the present invention can be applied, and FIG. 2 is a block diagram of an example of a circuit constructed based on the principles of the present invention. 2 (Explanation of reference symbols), ・113...LSI, 1・
61,16'3,165,167,169,171...
・Flip-flop (counter), 149, 151...
・Resistance of voltage dividing device, 139...Relay, 141, . 1
43...Relay contact (switch), 21...Needle bar release solenoid, 27...Linear actuator left for needle lateral movement, 43...Linear actuator for one feed, -181.
...NAND gate (detection device).

Claims

[Claims for Utility Model Registration] {1} In a sewing machine equipped with a stitch forming device whose operation can be controlled by supplying electric power to determine the position of an electromechanical actuator, the operation of the sewing machine is detected and the operation is controlled. a detection device that outputs an operation signal representing the actuator; and a power limiting device that limits the power supplied to the actuator to a predetermined upper limit when the operation signal does not appear for a predetermined period of time. (2) Utility Model Registration Scope of the Claims Claim 1 is characterized in that the detection device includes a device that detects the rotation of a main drive motor of the sewing machine and supplies the operation signal in synchronization with the rotation of the motor. sewing machine. (3) Utility Model Registration Scope of Claim 1, the sewing machine is capable of sewing a plurality of patterns according to the user's selection, and the detecting device is configured to sew a pattern in response to the user's selection of the pattern. The sewing machine further comprises a device for supplying the operation signal. (4) Utility Model Registration The sewing machine according to claim 1, wherein the detection device includes a device that outputs the operation signal in response to power being supplied to the sewing machine. (5) Utility model registration claim paragraph 2, 3 or 4
In paragraph 1, the power limiting device includes a clock device that supplies clock pulses of a constant frequency, a counting device that counts the clock pulses, and a device that reduces the power in response to the counting device reaching a predetermined count value. and a device for resetting the counting device in response to the operation signal (6) Utility model registration claim 1 (J), wherein the power limiting device comprises: A sewing machine comprising a device for changing the duty cycle of the voltage supplied to the actuator. (7) Utility Model Registration The sewing machine according to claim 1, wherein the power limiting device includes a selectively connectable voltage dividing device in a power supply path to the actuator. (8) Utility model registration In claim 7, the voltage dividing device includes a first resistor connected in series to the power supply path, and one of both ends of the first resistor that is electrically closer to the actuator. a second resistor connected between one end of the second resistor and a reference voltage; a normally open switch device connected in series with the second resistor; and a normally open switch device connected in series with the second resistor; and a device for closing the switch device. (9) Utility Model Registration The sewing machine according to claim 1, wherein the power limiting device operates only when power of a predetermined level or higher is supplied to the actuator. (10) Utility model registration Claim 9, wherein the actuator is a needle bar release solenoid, the predetermined level is zero power, and the power limiting device is a duty cycle of a voltage applied to the solenoid. A sewing machine characterized in that it includes a device for changing.