CN204174405U

CN204174405U - With the Sewing machines of protection circuit

Info

Publication number: CN204174405U
Application number: CN201420528102.6U
Authority: CN
Inventors: 吕德爽
Original assignee: Wenzhou Yi Sheng Science And Technology Ltd
Current assignee: Wenzhou Yi Sheng Science And Technology Ltd
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2015-02-25
Anticipated expiration: 2024-09-15

Abstract

The utility model discloses a kind of Sewing machines with protection circuit, comprise row motor, external power source, clutch pedal, between described external power source and described motor, be provided with protection circuit; Protection circuit comprises: the first delay circuit, the second delay circuit, the first protection circuit, the second protection circuit, and the first switches set, is coupled between motor and external power source, in response to the first delay circuit switch; Second switch group, is coupled between protection circuit and external power source, in response to the second delay circuit.By arranging normal work, low-power consumption, protection three kinds of states, power consumption can be reduced when the short time does not use on the one hand, and automatically entering guard mode for a long time, avoiding because Sewing machines clutch pedal is stepped on the potential safety hazard caused because of carelessness by other people.

Description

With the Sewing machines of protection circuit

Technical field

The utility model relates to a kind of Sewing machines, and more particularly, it relates to a kind of Sewing machines with protection circuit.

Background technology

Electric sewer is the perfect adaptation of conventional sewing machine and modern smart electronics, is the sewing tool of Modern Family housewife indispensability, the garment sewing equipment of Ye Shi modern clothing enterprise indispensability.It comprises Sewing machines body, motor and external power source, and underpart is provided with pedal, can pass through pedal solenoidoperated cluthes thus control engine running, thus start sewing action during use.But along with popularizing of electric sewer, the energy consumption of electric sewer is also the part that the design of present electric sewer must be considered.

At present, on market (application number be 201320251559 Chinese patent disclose a kind of industrial sewing machines no-load automatic stop electricity battery saving arrangement), comprise travel switch, relay and controllable silicon, the series connection of the trip switch is arranged between alternating current four line, the trip switch and industrial sewing machine pedal linkage, this relay is arranged between travel switch and controllable silicon, whether this controllable silicon is connected with motor powers to control motor, when sewing machine pedal is operated, travel switch is in closed condition, relay adhesive, controllable silicon obtains triggering signal conducting, motor obtains power supply entry into service, when industrial sewing machine pedal is in relieving state, this formation switch is in open mode, relay discharges, controllable silicon loses triggering signal and turns off, motor is stopped power supply, avoid the loss under Light Condition, although above-mentioned utility model can play an electric effect, but obviously there are two defects, 1, delay time can not be arranged, so during the practical Sewing machines of right needs in office, because the pin of user leaves pedal one end time, with regard to de-activation engine, restart engine again during such use, greatly have impact on engine life.2, after motor is stopped power supply, Sewing machines power supply does not turn off, once step on pedal, Sewing machines again can action again, Sewing machines sewing work may be caused to restart, cause unnecessary potential safety hazard.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of Sewing machines with protection circuit.

For achieving the above object, the utility model provides following technical scheme: a kind of Sewing machines with protection circuit, comprises motor, external power source, clutch pedal, between described external power source and described motor, be provided with protection circuit; Described protection circuit comprises: the first delay circuit: in response to clutch pedal, and time delay exports the first time delayed signal; Second delay circuit, is coupled to the first delay circuit, is controlled by the first delay circuit, and during for receiving the first time delayed signal, time delay also exports the second time delayed signal; First protection circuit, is coupled to the second delay circuit, is controlled by the first delay circuit, and during for receiving the first time delayed signal, break signal jumped by output alarm signal and motor; Second protection circuit, is coupled to the second delay circuit and the first protection circuit, is controlled by the second delay circuit, during for receiving the second time delayed signal, jumps disconnected Sewing machines external power source; First switches set, is coupled between motor and external power source, in response to the first delay circuit switch; Second switch group, is coupled between protection circuit and external power source, in response to the second delay circuit.

By such setting, the duty of motor can be set to three: normal operating conditions, low energy consumption state, guard mode.Namely when not let slip the clutch, first delay circuit trigger, and control the first protection circuit and make engine power-off Sewing machines enter low energy consumption state, and trigger the second delay circuit trigger, if before the second delay circuit time delay terminates, clutch pedal is not still operated, so control the second protection and make the power-off of whole Sewing machines external power source, play the effect of a protection, so, when being in guard mode, anyway disengage the clutch, Sewing machines all can not enter duty, need hand-reset clutch power supply, clutch switch is closed.

The utility model can be set to further: described first delay circuit comprises: travel switch, and one end is coupled to external power source, and links with clutch pedal, and on off state is set to normally closed; First time-delay relay coil, one end is coupled to travel switch, the neutral ground of another termination.

So, under working condition, staff constantly steps on dynamic clutch pedal, make the continuous action of clutch pedal, so under the effect of travel switch, first relay coil does not have follow current and flows through, so clocking capability is jumped disconnected reset, so the first delay circuit can not transmit control signal to the second delay circuit, if staff one end time does not step on dynamic clutch pedal, so lasting electric current is had to flow through in the first time-delay relay coil, can transmit control signal to the second delay circuit, Sewing machines is placed in the second duty, namely low power consumpting state, such project organization is simple, and be easy to operative's understanding.

The utility model can be set to further: described second delay circuit comprises: the first time-delay relay switch, and in response to the first time-delay relay coil, one end is coupled to external power source, and on off state is set to often open; Second time-delay relay coil, one end is coupled to the first time-delay relay switch, and the other end is coupled to the first protection circuit.By first delay circuit control Sewing machines enter low power consumpting state, can by second delay circuit control Sewing machines enter guard mode, principle and beneficial effect identical with the first delay circuit.

The utility model can be set to further: described first protection circuit comprises: alarm lamp, and one end is coupled to the second time-delay relay coil; Buzzer, one end is coupled to alarm lamp; First relay coil, one end is coupled to buzzer, and the neutral ground of another termination, for controlling the first switches set action.When Sewing machines work enters low power consumpting state; conducting first protection circuit; alarm lamp glimmers; buzzer rings; remind user's a period of time Sewing machines, and because having electric current to pass through in the first relay coil, control the first protection switch group action; close the connection between power machine and power supply, avoid motor to cross long-time zero load.

The utility model can be set to further: described second protection circuit comprises: the second relay coil, and one end is coupled to external circuit, for controlling the action of second switch group; Second time-delay relay switch, in response to the second time-delay relay coil, one end is coupled to the second relay coil, and the neutral ground of another termination, on off state is set to normally closed.When Sewing machines enters guard mode, when namely user does not step on dynamic clutch pedal for a long time, the second relay coil controls the second protection switch group and turns off.Thus make whole Sewing machines jump electricity shutoff, when user needs to reuse Sewing machines, need manual toggle second switch group, realize the startup of Sewing machines.

Compared with prior art; the utility model has the advantage of: by arranging normal work, low-power consumption, protection three kinds of states; reduce power consumption on the one hand; and during normal use sewing machine electromotor can not turn off; just turn off when a period of time does not use; and remind user while turning off; a good man-machine interaction can be realized; be unlikely to mistake and jump electricity; when after prompting user one end time; user does not still step on dynamic clutch pedal, and so Sewing machines will jump electricity automatically, enters guard mode.Avoid because Sewing machines clutch pedal is stepped on the potential safety hazard caused because of carelessness by other people.

Accompanying drawing explanation

Fig. 1 is circuit structure diagram of the present utility model;

Reference numeral: 1, the first delay circuit; 2, the second delay circuit; 3, the first protection circuit; 4, the second protection circuit.

Detailed description of the invention

With reference to Fig. 1, embodiment of the present utility model is described further.

A kind of Sewing machines with protection circuit, travel switch and the first time-delay relay coil KT1 are connected on external power source branch road, so linked by solenoidoperated cluthes pedal and travel switch, just can control the break-make of the first time-delay relay coil KT1, described time-delay relay coil model elects JSZ3 series as, the first time-delay relay coil KT1 time in first delay circuit 1 can be set to 30 seconds, in 30 seconds, if user of service has let slip the clutch, so the first time-delay relay coil KT1 power-off counts again, if internal clutch pedal was not operated in 30 seconds, so the first time-delay relay coil KT1 adhesive first time-delay relay K switch T1, conducting second delay circuit 2 and the first protection circuit 3, the second time-delay relay coil KT2 in second delay circuit 2 starts timing, time can be set to 5 minutes, first protection circuit 3 relay coil controls the first switches set action simultaneously, in first protection circuit 3, buzzer SP model elects LZQ-2715B220V as, alarm lamp model elects LTE5071J as, buzzer SP rings simultaneously, alarm lamp flicker reminds user to jump electricity, disconnect motor, circuit enters low power consumpting state, if in 5 minutes, user continues to use, let slip the clutch, so the first time-delay relay coil KT1 power-off, first time-delay relay K switch T1 disconnects the first protection circuit 3 and the second delay circuit 2, first protection switch group KM1 comes back to normally off, Sewing machines can normally be worked, if in 5 minutes, clutch pedal is not operated, so the second time-delay relay coil KT2 controls the second time-delay relay K switch T2 action, open the second protection circuit 4, electric current is had to flow through in second relay coil KM1, second protection switch group KM2 is turned off, it should be noted that, although the second protection switch group KM2 is controlled by the second time-delay relay coil KT2, but still can manually reset, Sewing machines is jumped electricity and is turned off, enter guard mode.

So by having the action of trampling Sewing machines clutch pedal as user in 30 seconds, so Sewing machines can not be reported to the police, if user is without the action of stepping on pedal in 30 seconds, so judge that user leaves, or temporarily do not need practical Sewing machines, so make sewing machine electromotor jump electricity and report to the police, one plays the effect that is reduced power consumption, two can remind other people, if then in 5 minutes, user does not still have disengage the clutch, or power cutoff, so Sewing machines can enter guard mode automatically, jump disconnected whole power supply, like this, no matter user, or other people step on dynamic clutch pedal all can not make Sewing machines work on.

Designed by foregoing circuit; the duty of Sewing machines is divided into three parts; by arranging normal work, low-power consumption, protection three kinds of states; reduce power consumption on the one hand; and during normal use sewing machine electromotor can not turn off; just turn off when a period of time does not use; and remind user while turning off; a good man-machine interaction can be realized; be unlikely to mistake and jump electricity, when after prompting user one end time, user does not still step on dynamic clutch pedal; so Sewing machines will jump electricity automatically, enters guard mode.Avoid because Sewing machines clutch pedal is stepped on the potential safety hazard caused because of carelessness by other people.

The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. the Sewing machines with protection circuit, comprises motor, external power source, clutch pedal, it is characterized in that:

Protection circuit is provided with between described external power source and described motor;

Described protection circuit comprises:

First delay circuit, in response to clutch pedal, and time delay exports the first time delayed signal;

Second delay circuit, is coupled to the first delay circuit, is controlled by the first delay circuit, and during for receiving the first time delayed signal, time delay also exports the second time delayed signal;

First protection circuit, is coupled to the second delay circuit, is controlled by the first delay circuit, and during for receiving the first time delayed signal, break signal jumped by output alarm signal and motor;

Second protection circuit, is coupled to the second delay circuit and the first protection circuit, is controlled by the second delay circuit, during for receiving the second time delayed signal, jumps disconnected Sewing machines external power source;

First switches set, is coupled between motor and external power source, in response to the first delay circuit switch;

Second switch group, is coupled between protection circuit and external power source, in response to the second delay circuit.

2. a kind of Sewing machines with protection circuit according to claim 1, is characterized in that: described first delay circuit comprises: travel switch, and one end is coupled to external power source, and links with clutch pedal, and on off state is set to normally closed;

First time-delay relay coil, one end is coupled to travel switch, the neutral ground of another termination.

3. a kind of Sewing machines with protection circuit according to claim 2, it is characterized in that: described second delay circuit comprises: the first time-delay relay switch, in response to the first time-delay relay coil, one end is coupled to external power source, and on off state is set to often open;

Second time-delay relay coil, one end is coupled to the first time-delay relay switch, and the other end is coupled to the first protection circuit.

4. a kind of Sewing machines with protection circuit according to claim 3, it is characterized in that: described first protection circuit comprises: alarm lamp, one end is coupled to the second time-delay relay coil;

Buzzer, one end is coupled to alarm lamp;

First relay coil, one end is coupled to buzzer, and the neutral ground of another termination, for controlling the first switches set action.

5. a kind of Sewing machines with protection circuit according to claim 4, is characterized in that: described second protection circuit comprises: the second relay coil, and one end is coupled to external circuit, for controlling the action of second switch group;

Second time-delay relay switch, in response to the second time-delay relay coil, one end is coupled to the second relay coil, and the neutral ground of another termination, on off state is set to normally closed.