CN201214070Y - Auto-power-off system of paper chipper - Google Patents

Auto-power-off system of paper chipper Download PDF

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Publication number
CN201214070Y
CN201214070Y CNU2008200849032U CN200820084903U CN201214070Y CN 201214070 Y CN201214070 Y CN 201214070Y CN U2008200849032 U CNU2008200849032 U CN U2008200849032U CN 200820084903 U CN200820084903 U CN 200820084903U CN 201214070 Y CN201214070 Y CN 201214070Y
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CN
China
Prior art keywords
circuit
switch
shredder
control circuit
switching signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2008200849032U
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Chinese (zh)
Inventor
林夏森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUNWOOD HOLDING GROUP CO Ltd
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SUNWOOD HOLDING GROUP CO Ltd
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Filing date
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Priority to CNU2008200849032U priority Critical patent/CN201214070Y/en
Application granted granted Critical
Publication of CN201214070Y publication Critical patent/CN201214070Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides an automatic power-off system for a paper shredder, which belongs to the technical field of office equipment. The automatic power-off system for the paper shredder solves the problems that an automatic power-off system of the prior paper shredder fails to realize the complete power-off and consumes excessive standby energy source. The automatic power-off system for the paper shredder comprises a switch circuit M0 used for switching the connection/disconnection state of a circuit as well as a switch signal circuit M1 and a control circuit M2 which are connected together, wherein the switch circuit M0 is connected with the switch signal circuit M1 and the control circuit M2 respectively; after a power supply is input, electricity is supplied to the switch signal circuit M1 and the control circuit M2 through the switch circuit M0, the switch signal circuit M1 is used for providing a control signal representing the connection/disconnection state of the switch circuit M0 for the control circuit M2, and the control circuit M2 can switch the connection/disconnection state of the switch circuit M0 according to the control signal, and can cut off the switch circuit M0 when the standby state of the paper shredder exceeds preset time. The automatic power-off system for the paper shredder has the advantages of low energy consumption, high safety performance and so on.

Description

A kind of automatic outage system of shredder
Technical field
The utility model belongs to the office equipment technical field, relates to a kind of automatic outage system of shredder.
Background technology
Shredder is one of office equipment of using always, the function that present shredder has is more and more, and the consumer is also more and more higher to the functional requirement of shredder, has power saving, safety and automatic circuit break function are exactly the special partial function of paying attention to of consumer, also are the targets that shredder manufacturer is pursued.Therefore, can realize power saving and purpose of safety, have the technical problem that must solve when automatic circuit break function becomes present manufacturing shredder again.
For this reason, people have designed some at the existing the problems referred to above of shredder and have had the shredder of automatic circuit break function.As Chinese patent disclosed " a kind of control system of shredder " (its publication number is CN101062486A), this system comprises power supply, sensor, motor and control circuit, connect at shredder under the state of power supply, if shredder is in holding state, and when stand-by time surpasses the automatic power-off time set, control system automatic disconnection shredder power supply.
Automatic outage control system in the above-mentioned patent adopts digital processing chip to control, and detects and control the break-make of power switch.In the process of this system's operation, no matter the power switch on-off, digital processing chip is in not off-position fully all the time owing to will detect whether pressing of power switch.It promptly is in "on" position for digital processing chip provides the weakness part of power supply under the state that power switch is not pressed, can't reach security requirement and the zero of system's energy that system cuts off the power supply fully under the situation that power switch disconnects and consume.
Because market is under the more and more higher requirement of shredder Product Safety and energy resource consumption, present automatic outage system exists the serious potential safety hazard and the wasting of resources.
Summary of the invention
The purpose of this utility model is the existing the problems referred to above of automatic outage system at existing shredder, cut off the power supply fully and proposed a kind of shredder of realizing, lower the system standby energy resource consumption, improve the automatic outage system of security behind the system cut-off and reliability
The purpose of this utility model can realize by following technical proposal: a kind of automatic outage system of shredder, be connected on the machine operation circuit M3 of shredder, it is characterized in that, this system comprises the on-off circuit M0 that is used for the commutation circuit on off operating mode and the switching signal circuit M1 that is linked together and control circuit M2, and on-off circuit M0 links with switching signal circuit M1 and control circuit M2 respectively; Power supply input back powers to switch signal circuit M1 and control circuit M2 by on-off circuit M0, switching signal circuit M1 is used to control circuit M2 that expression on-off circuit M0 is provided the control signal of on off operating mode, control circuit M2 can come the on off operating mode of switching switch circuit M0 according to this control signal, and control circuit M2 can cut off on-off circuit M0 when the holding state of shredder surpasses setting-up time.
When on-off circuit M0 connects, can make the machine operation circuit M3 of shredder enter duty, and according to the break-make situation of on-off circuit M0 control circuit M2 be sent control signal by switching signal circuit M1.Control circuit M2 receives the state that is positioned in conjunction with shredder itself again after the control signal that switching signal circuit M1 sends and makes logical process, according to the break-make of the circuit of the gauge tap as a result M0 that handles and the circulation circuit of electric current.Simultaneously, the time that shredder is in holding state surpasses default during the time, and control circuit M2 can cut off on-off circuit M0, can make whole system be in complete off-position equally.
In the automatic outage system of above-mentioned a kind of shredder, described on-off circuit M0 comprises that a two-way is not with the power switch S1 and the relay J of self-locking, above-mentioned relay J includes contact sets one J1 and contact sets two J2, the positive pole of power supply and negative pole respectively with the two ends that are connected on machine operation circuit M3 after the normally opened contact J23 of the normally opened contact J11 of contact sets one J1 and contact sets two J2 is connected; Described power switch S1 includes and is connected in the different circuits and the switch S 11 and the switch S 12 of synchronous working, switch S 11 and the two ends that are connected in parallel on normally opened contact J11 after normally-closed contact J12 among contact sets one J1 is connected in series, switch S 12 and the two ends that are connected in parallel on normally opened contact J23 after normally-closed contact J24 among contact sets one J2 is connected in series, the input of above-mentioned switching signal circuit M1 is connected between switch S 11 and the normally-closed contact J12.
Relay J includes two groups of single-pole double throw contacts, is respectively contact sets one J1 and contact sets two J2, and every group of contact sets all includes a normally opened contact and a normally-closed contact.Power switch S1 is a two-way switch, and the staff is when operating power switch S 1, and switch S 11 and switch S 12 on two circuit work asynchronously, and can automatically reset after the staff looses one's grip.
When shredder is not opened, normally-closed contact J12, J24 closure among two contact sets J1, the J2 of relay J, when power switch S1 presses, the switch S 11 and the S12 closure that are connected in series with normally-closed contact J12 and J24 respectively on two circuits of power switch S1, electric current is at first powered to machine operation circuit M3 by S11, J12 and S12, J24, makes machine startup.Meanwhile switching signal circuit M1 sends a control signal to control circuit M2, this control signal is representing that power switch S1 is in closure state and machine is in starting state, control circuit M2 receives two normally opened contact J11 and the J23 adhesive that makes relay J after this control signal, and power supply will change into by relay J after the adhesive normally opened contact J11 and J23 give machine operation circuit M3 power supply.After unclamping power switch S1, machine normally starts.
When system is in starting state, this moment relay J two normally opened contact J11 and J23 adhesive, after the adhesive in power switch S1 do not press, electric current can't pass through switching signal circuit M1, switching signal circuit M1 also can't send control signal to control circuit M2, so the machine operate as normal; In case power switch S1 is pressed, electric current flows among the switching signal circuit M1 by switch S 11, switching signal circuit M1 produces control signal notice control circuit M2, under state after normal the startup, control circuit M2 is automatic disconnection normally opened contact J11 and J23, the normally-closed contact J12 of relay J and J24 adhesive, and control circuit M2 refusal is carried out other orders simultaneously, in case after unclamping power switch S1, system can reach the outage purpose.
Another kind of situation, when system is in starting state and when disobeying the moving outage of armrest, utilisation system cuts off the power supply after entering holding state automatically.When system enters holding state, normally opened contact J11 and J23 adhesive, switch S 11 and switch S 12 still are in off-state, in case the system standby time surpasses the time that system sets, control circuit M2 can disconnect normally opened contact J11 and J23, though and this moment normally-closed contact J12 and J24 closure because switch S 11 and switch S 12 are in off-state, system still can realize cutting off the power supply fully.
In the automatic outage system of above-mentioned a kind of shredder, described switching signal circuit M1 comprises a photoelectrical coupler U2 and the divider resistance R1, the R11 that are serially connected, one end of photoelectrical coupler U2 primitive plane is connected with the common port of normally-closed contact J24 with normally opened contact J23, and the other end is connected between normally-closed contact J12 and the switch S 11; Secondary side is connected in series back ground connection with divider resistance R1 and R11, the input of above-mentioned control circuit M2 is connected the common port of divider resistance R1 and divider resistance R11.
After switch S 11 closures, electric current is input to the primitive plane of photoelectrical coupler U2 by switch S 11, and and power cathode between form the loop, make the luminous end of photoelectrical coupler U2 luminous, with this with the input signal of telecommunication be converted to the receiving terminal that optical signal is passed to photoelectrical coupler U2 secondary side.The receiving terminal of photoelectrical coupler U2 secondary side converts optical signal to signal of telecommunication output again, be not electrically connected in the whole conversion process, so both coupled transfer signal, buffer action is arranged again.When each switch S 11 is pressed, all can under the effect of divider resistance R1 and R11, also be in the control signal of down state to an expression of the input output switch S 11 of control circuit M2.
In the automatic outage system of above-mentioned a kind of shredder, also be provided with a filter capacitor C1 among the described switching signal circuit M1, above-mentioned filter capacitor C1 is in parallel with divider resistance R1.Filter capacitor C1 plays the effect of impurity elimination wave interference.
In the automatic outage system of above-mentioned a kind of shredder, described control circuit M2 comprises central processing unit U1 and coil driver, above-mentioned central processing unit U1 includes switching signal input RA3 and the control signal output RA2 that is connected with coil driver, and switching signal input RA3 is connected with switching signal circuit M1.
In the automatic outage system of above-mentioned a kind of shredder, described coil driver includes the coil J3 of triode Q and relay J, the base stage of triode Q is connected on the control signal output RA2, and the colelctor electrode of triode Q is connected in series grounded emitter with the coil J3 of relay J.
After the switching signal input RA3 of control circuit M2 receives the control signal of the representative power switch S1 state that switching signal circuit M1 sends, the state that is in conjunction with machine itself is done logical process again, when central processing unit U1 judges residing state, high level or low level that can corresponding change control signal output RA2 be controlled the conducting of triode Q or are blocked with this.When control signal output RA2 is high level, the colelctor electrode of triode Q and emitter stage conducting, the coil J3 conducting of corresponding relays J, thereby control normally opened contact J11 and normally opened contact J23 adhesive.On the contrary, when control signal output RA2 was low level, the coil J3 of relay J disconnected, and normally opened contact J11 and normally opened contact J23 disconnect, and normally-closed contact J12 and J24 adhesive.
As a kind of scheme preferably, in the automatic outage system of above-mentioned a kind of shredder, also be provided with the initialization circuit of an automatic power-off time among the described control circuit M2, U1 links to each other with central processing unit.This initialization circuit can be drawn external key on shredder, make things convenient for user oneself to set the time of outage automatically.
In the automatic outage system of above-mentioned a kind of shredder, also be parallel with a silicon diode D2 on the coil J3 of described relay J, the forward ground connection of silicon diode D2.The effect of silicon diode D2 is to remove the reverse impulse interference power that the coil J3 of relay J produces when discharge, prevents that relay J is in the backward voltage misoperation.
Compared with prior art, the beneficial effect of this automatic outage provided by the utility model system is:
1, energy resource consumption is low, and this system has really realized the outage fully of system under the state that power switch S1 disconnects, and has improved security of products, reliability and has realized product is reduced the requirement of energy resource consumption.
2, security performance height, switching signal circuit M1 adopt photoelectrical coupler U2 transmission of electric signals, are not electrically connected in the whole conversion process, and input, the output signal of telecommunication are had the good isolation effect, have strengthened the security of whole system simultaneously greatly.
3, diverse in function, control circuit M2 is realized by one-chip computer, diverse in function can be cut off the power supply the stand-by period automatically according to the customer requirement change.
Description of drawings
Fig. 1 is the circuit block diagram of the automatic outage system of this shredder.
Fig. 2 is the circuit diagram of the automatic outage system of this shredder.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Consult Fig. 1, Fig. 1 is cut off the power supply the automatically circuit block diagram of system of this shredder, as shown in the figure, this automatic outage system is connected on the machine operation circuit M3 of shredder, comprise the on-off circuit M0 that is used for the commutation circuit on off operating mode and the switching signal circuit M1 that is linked together and control circuit M2, on-off circuit M0 links with switching signal circuit M1 and control circuit M2 respectively; To switch signal circuit M1 and control circuit M2 power supply, in the present embodiment, system adopts civil power to power as power supply by on-off circuit M0 in civil power input back.
Switching signal circuit M1 is used to control circuit M2 that expression on-off circuit M0 is provided the control signal of on off operating mode, control circuit M2 can come the circulation circuit of switching switch circuit M0 according to this control signal, and control circuit M2 can cut off on-off circuit M0 when the stand-by time of the machine operation circuit M3 of shredder surpasses setting-up time.
Fig. 2 is the physical circuit figure of the automatic outage system of this shredder, as shown in the figure, on-off circuit M0 comprises that a two-way is not with the power switch S1 and the relay J of self-locking, relay J includes normally opened contact J11, J23 and normally-closed contact J12, J24, power switch S1 includes switch S 11 and the switch S 12 that is connected in the different circuits, and switch S 11 and switch S 12 work asynchronously all the time.Behind the live wire process knife switch S2 and fuse F1 of civil power, by inserting behind the normally opened contact J11 among the machine operation circuit M3, its zero line is by inserting behind the normally opened contact J23 among the machine operation circuit M3 again.Live wire can also be linked into via the tandem link of switch S 11 and normally-closed contact J12 among the machine operation circuit M3 simultaneously.Equally, zero line also can be connected among the machine operation circuit M3 via switch S 12 and normally-closed contact J24.
Switching signal circuit M1 comprises a photoelectrical coupler U2, divider resistance R1 and R11, be provided with a current-limiting resistance R2 between on-off circuit M0 and the switching signal circuit M1, the end of this current-limiting resistance R2 is connected between switch S 11 and the normally-closed contact J12, the other end is connected with the input of photoelectrical coupler U2 primitive plane, is connected on the zero line of civil power behind silicon diode D1 of output forward serial connection of photoelectrical coupler U2 primitive plane.The output of photoelectrical coupler U2 secondary side is connected in series ground connection behind divider resistance R11 and the R1 successively, also is provided with signal output part KEY end between divider resistance R11 and the R1.Divider resistance R1 goes up also and is connected with a filter capacitor C1, and filter capacitor C1 plays the effect of impurity elimination wave interference.D1 is used to limit the civil power way flow and crosses switching signal circuit M1, prevents that the luminous end of photoelectrical coupler U2 from being smashed by the civil power backward voltage.
Control circuit M2 includes central processing unit U1, the coil J3 of triode Q and relay J, central processing unit U1 is provided with switching signal input RA3 and control signal output RA2, be connected on the base stage of triode Q behind current-limiting resistance R3 of control signal output RA2 serial connection, the colelctor electrode of triode Q is connected in series with the coil J3 of relay J, and grounded emitter; KEY end among switching signal input RA3 and the switching signal circuit M1 is connected.
In the present embodiment, the D.C. regulated power supply that the target VDD of the institute AC low-tension electricity that to be civil power come out by transformer produces after bridge heap rectification and capacitor filtering voltage stabilizing among Fig. 2, voltage be about+12V about.Because wiring needs, in the reception termination of photoelectrical coupler U2 VDD; Owing to could drive about relay needs+12V, thus the relay coil termination VDD.
When shredder was not opened, normally opened contact J11, J23 and normally-closed contact J12, the J24 of relay J were in state as shown in Figure 2, normally-closed contact J12, J24 adhesive, and normally opened contact J11, J23 disconnect, and the coil J3 of relay J does not switch on, and the KEY end is low level.
Closed shutter switch S 2, when power switch S1 pressed, switch S 11 on two circuits of power switch S1 and switch S 12 were closed simultaneously, and civil power is at first powered to machine operation circuit M3 by S11, J12 and S12, J24, makes machine startup.Civil power can also be by the high-level control signal of this road of current-limiting resistance R2 about 5V of KEY end generation simultaneously, and notice central processing unit U1 switch S 11 and switch S 12 also are in down state.After the switching signal input RA3 of central processing unit U1 receives this control signal, the state that is in conjunction with machine itself is done logical process again, when central processing unit U1 judges residing state, make control signal output RA2 be in high level, the colelctor electrode of triode Q and emitter stage conducting, coil J3 conducting.After the coil J3 conducting, make normally opened contact J11 and J23 adhesive.Normally-closed contact J12 and J24 disconnect, and civil power will change into by relay J this moment normally opened contact J11 and J23 give machine operation circuit M3 power supply.After unclamping power switch S1, machine normally starts.
When system is in starting state, this moment relay J two normally opened contact J11 and J23 adhesive, in power switch S1 do not press, civil power can't produce high-level control signal at the KEY end by this road of current-limiting resistance R2, so the machine operate as normal after the adhesive; In case power switch S1 is pressed, the civil power switch S 11 of flowing through, and the control signal notice central processing unit U1 power switch S1 that makes this road circulation of current-limiting resistance R2, KEY end produce high level is in down state.Central processing unit U1 sends low level in conjunction with the duty of machine operation circuit M3 to the base stage of triode Q, and Q blocks with triode.After coil J3 was disconnected, normally opened contact J11 and J23 disconnected, corresponding normally-closed contact J12 and J24 adhesive, and central processing unit U1 refusal is carried out other orders simultaneously, in case after unclamping power switch S1, system can reach the outage purpose.
Above-described is exactly that system relies on manual operation to realize the complete power process of system fully, and another kind of situation, system can also be cut off the power supply after entering holding state automatically.When system works during at holding state, to begin the timing of shutting down automatically, this moment normally opened contact J11 and J23 adhesive, switch S 11 and switch S 12 still are in off-state, in case the system standby time surpasses the time that system sets, the control signal output RA2 output low level of central processing unit U1, coil J3 disconnects, normally opened contact J11 and J23 disconnect, though and this moment normally-closed contact J12 and J24 adhesive, but because switch S 11 and switch S 12 are in off-state, system still can realize outage fully.
As a kind of scheme preferably, also be connected with the initialization circuit of an automatic power-off time on the central processing unit U1, this initialization circuit can be drawn external key on shredder, make things convenient for user oneself to set the time T 1 of outage automatically.
Also can be parallel with a silicon diode D2 on the coil J3 of relay J, the forward ground connection of silicon diode D2.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims (8)

1, a kind of automatic outage system of shredder, be connected on the machine operation circuit (M3) of shredder, it is characterized in that, this system comprises the on-off circuit (M0) that is used for the commutation circuit on off operating mode and the switching signal circuit (M1) that is linked together and control circuit (M2), and on-off circuit (M0) links with switching signal circuit (M1) and control circuit (M2) respectively; Power supply input back powers to switch signal circuit (M1) and control circuit (M2) by on-off circuit (M0), switching signal circuit (M1) is used to control circuit (M2) that the control signal of expression on-off circuit (M0) on off operating mode is provided, control circuit (M2) can come the on off operating mode of switching switch circuit (M0) according to this control signal, and control circuit (M2) can cut off on-off circuit (M0) when the holding state of shredder surpasses setting-up time.
2, the automatic outage system of a kind of shredder according to claim 1, it is characterized in that, described on-off circuit (M0) comprises that a two-way is not with the power switch (S1) and the relay (J) of self-locking, above-mentioned relay (J) includes contact sets one (J1) and contact sets two (J2), the positive pole of power supply and negative pole respectively with the two ends that are connected on machine operation circuit (M3) after the normally opened contact (J23) of the normally opened contact (J11) of contact sets one (J1) and contact sets two (J2) is connected; Described power switch (S1) includes and is connected in the different circuits and the switch (S11) and the switch (S12) of synchronous working, switch (S11) and the two ends that are connected in parallel on normally opened contact (J11) after normally-closed contact (J12) in the contact sets one (J1) is connected in series, switch (S12) and the two ends that are connected in parallel on normally opened contact (J23) after normally-closed contact (J24) in the contact sets one (J2) is connected in series, the input of above-mentioned switching signal circuit (M1) is connected between switch (S11) and the normally-closed contact (J12).
3, the automatic outage system of a kind of shredder according to claim 1, it is characterized in that, divider resistance (R1), (R11) that described switching signal circuit (M1) comprises a photoelectrical coupler (U2) and is serially connected, one end of photoelectrical coupler (U2) primitive plane is connected with the common port of normally opened contact (J23) with normally-closed contact (J24), and the other end is connected between normally-closed contact (J12) and the switch (S11); Secondary side is connected in series back ground connection with divider resistance (R1) with (R11), and the input of above-mentioned control circuit (M2) is connected the common port of divider resistance (R1) and divider resistance (R11).
4, the automatic outage system of a kind of shredder according to claim 3 is characterized in that also be provided with a filter capacitor (C1) in the described switching signal circuit (M1), above-mentioned filter capacitor (C1) is in parallel with divider resistance (R1).
5, according to the automatic outage system of a kind of shredder described in the claim 1, it is characterized in that, described control circuit (M2) comprises central processing unit (U1) and coil driver, above-mentioned central processing unit (U1) includes switching signal input (RA3) and the control signal output (RA2) that is connected with coil driver, and switching signal input (RA3) is connected with switching signal circuit (M1).
6, the automatic outage system of a kind of shredder according to claim 5, it is characterized in that, described coil driver includes the coil (J3) of triode (Q) and relay (J), the base stage of triode (Q) is connected on the control signal output (RA2), the colelctor electrode of triode (Q) is connected in series grounded emitter with the coil (J3) of relay (J).
7, according to the automatic outage system of claim 5 or 6 described a kind of shredders, it is characterized in that also be provided with the initialization circuit of an automatic power-off time in the described control circuit (M2), (U1) links to each other with central processing unit.
8, the automatic outage system of a kind of shredder according to claim 6 is characterized in that, also is parallel with a silicon diode (D2) on the coil (J3) of described relay (J), the forward ground connection of silicon diode (D2).
CNU2008200849032U 2008-03-24 2008-03-24 Auto-power-off system of paper chipper Expired - Lifetime CN201214070Y (en)

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Application Number Priority Date Filing Date Title
CNU2008200849032U CN201214070Y (en) 2008-03-24 2008-03-24 Auto-power-off system of paper chipper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101259449B (en) * 2008-03-24 2011-10-05 三木控股集团有限公司 Automatically power-off system of paper chipper and automatically power-off method
CN103941705A (en) * 2014-04-29 2014-07-23 安徽江淮汽车股份有限公司 Site plant management system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101259449B (en) * 2008-03-24 2011-10-05 三木控股集团有限公司 Automatically power-off system of paper chipper and automatically power-off method
CN103941705A (en) * 2014-04-29 2014-07-23 安徽江淮汽车股份有限公司 Site plant management system and method

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