CN2905221Y

CN2905221Y - Intelligent shifting paper shredding mechanism

Info

Publication number: CN2905221Y
Application number: CN 200620053744
Authority: CN
Inventors: 钟奋强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-17
Filing date: 2006-01-17
Publication date: 2007-05-30
Anticipated expiration: 2016-01-17

Abstract

The utility model relates to a paper-shredding mechanism capable of intelligent gear-shifting, comprising a motor, a drive gear, a knife roll assembly and a corresponding control circuit, wherein the motor is connected with external power supply through the control circuit and is connected with the knife roll assembly through the drive gear; the control circuit is provided with a control chip, and the control chip is electrically connected with a gear-shifting circuit and a locked-rotor detecting circuit; the gear-shifting circuit is electrically connected with the motor, and based on paper feeding state detected by the locked-rotor detecting circuit, the control chip functions to adjust power consumption by the motor. By combining a gear-shifting circuit and a locked-rotor detecting circuit, the utility model realizes automatic and intelligent adjustment of power consumption by the motor according to different amount of paper feeding, therefore a paper shredder installed with the utility model can be more energy-saving.

Description

The intelligent shift paper shredder

[technical field]

The utility model relates to a kind of shredder, relates in particular to a kind of intelligent shift paper shredder.

[background technology]

Shredder is one of office equipment of using always.

The paper shredder that shredder adopted generally includes motor, travelling gear, rotor group and correspondent control circuits, and motor external power supply, and be connected with the rotor group by travelling gear, control circuit be the break-make by on-off circuit control motor power then.During use, start power supply earlier, make paper shredder enter holding state, when the user passes through the paper feed port paper feed of shredder, the built-in paper feed testing circuit of control circuit spies out paper feed and sends signal to on-off circuit, makes the motor conducting, and motor begins to carry out shredded paper work.

This operation principle of shredder is comparatively simple, but but brought corresponding problem: during shredded paper, paper feed port paper number no matter, motor turns round with the higher-wattage of near constant for a long time, and it is also inequality in fact to pulverize the required power consumption of different paper quantity, when paper cutting quantity during, can cause motor to quit work greater than the load of motor; And, then can cause wasting of motor power consumption when paper cutting quantity very little the time.All fail to make motor to reach the utilization of fullest ground when the shredder during daily use, many times each shredded paper, therefore, this shredder has caused waste to electric energy to a great extent.

[utility model content]

Main purpose of the present utility model is to provide a kind of intelligent shift paper shredder that can regulate the power consumption of motor in response to number of paper, makes its applied shredder save energy consumption.

For achieving the above object, the utility model adopts following technical scheme:

The utility model intelligent shift paper shredder comprises motor, travelling gear, rotor group and correspondent control circuits, motor is through the control circuit external power supply, and be connected with the rotor group by travelling gear, wherein, has control chip in this control circuit, this control chip is electrically connected with shift circuit and stall testing circuit, and this shift circuit and motor electrically connect, the paper feed state that control chip detects according to the stall testing circuit is regulated motor by shift circuit power consumption.Wherein, this control chip adopts singlechip chip.

Consider cost and technical factor, described inversion switching circuit and each driving switch circuit can adopt relay circuit, at this moment, described shift circuit comprises tap terminals and inversion switching circuit, each driving switch circuit of electrically connecting with tap terminals, and inversion switching circuit and each driving switch circuit all electrically connect with control chip.

Described shift circuit also can consider to adopt ghyristor circuit to realize.

Compared with prior art, the utlity model has following advantage:, realize the purpose of intelligently regulating motor power consumption, thereby its applied shredder is more energy-conservation according to the paper of varying number by cooperating of shift circuit and stall testing circuit.

[description of drawings]

Fig. 1 is the stereogram of the applied a kind of shredder of the utility model paper shredder;

Fig. 2 is the utility model circuit theory schematic diagram;

Fig. 3 is the circuit theory diagrams of the utility model first embodiment, and it adopts relay circuit as on-off circuit;

Fig. 4 is the circuit theory diagrams of the utility model second embodiment, and it adopts ghyristor circuit as on-off circuit.

[specific embodiment]

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described.

See also Fig. 1 and Fig. 2, the utility model intelligent shift paper shredder is applied on a kind of shredder, paper shredder 9 comprises motor 1, travelling gear 2, rotor group 3 and correspondent control circuits 4, motor 1 is through control circuit 4 external power supplys 5, and be connected with rotor group 3 by travelling gear 2, paper shredder 9 is installed on the support 81 that is built-in with paper shredding barrel 7 by a drain pan 6, is covered with top cover 82 on the paper shredder 9, and top cover 82 is interlocked with support 81 or locks.During paper shredder 9 work, starter motor 1, then motor 1 drives travelling gear 2 and then drives rotor group 3 and rolls, and just can reach the purpose of shredded paper.

See also Fig. 2, has control chip 41 in the described control circuit 4, this control chip 41 can be singlechip chip, it is electrically connected with shift circuit 42 and stall testing circuit 43, this shift circuit 42 electrically connects with motor 1, the power consumption that the paper feed state that control chip 41 detects according to stall testing circuit 43 is regulated motor 1 by shift circuit 42.

Please in conjunction with Fig. 2 and Fig. 3, described shift circuit 42 comprises tap terminals 423 and inversion switching circuit, each driving switch circuit of electrically connecting with tap terminals 423, inversion switching circuit and each driving switch circuit all with the electric connection of control chip 41 electric connections with 41 of realization shift circuit 42 and control chips.

Consult Fig. 3, the utility model adopts relay circuit as inversion switching circuit and driving switch circuit, respectively correspondence be provided with reversal switch K1, low consumption K switch 2, middle consumption K switch 3 and high consumption K switch 4 totally four relay switches all be electrically connected between control chip 41 and the tap terminals 423.

The utility model is realized its fluid drive function as follows:

A) connect high tap position on-off circuit starter motor 1, high consumption K switch 4 adhesives this moment, middle consumption K switch 3, low consumption K switch 2 and reversal switch K1 all open;

B) control circuit 4 switches to after the regular hour postpones and only connects the lowest gear on-off circuit, and motor 1 is with the deep low gear running, and only have low consumption K switch 2 by adhesive this moment;

When c) stall testing circuit 43 stall testing circuits detect can not the be broken moving paper of current gear, switch to and connect a last higher gear on-off circuit, switch to and connect a last higher gear on-off circuit, the duplicate step of laying equal stress on, until high tap position, otherwise the connection that keeps current driving switch.

When d) stall testing circuit 43 detects paperboard, connect inversion switching circuit and corresponding driving switch circuit simultaneously, paper is withdrawed from, have only reversal switch K1 and high consumption K switch 4 this moment by adhesive.In this step, when the paper amount more after a little while, can consider also that other driving switch circuit drives to move back paper, but generally conservative to connect high tap position on-off circuit.

After each broken intact paper, send instruction by control chip 41 the lowest gear on-off circuit is connected, motor 1 is turned round with lowest energy consumption.Within 3 seconds as once more detect paper feed, then motor 1 still begins with high tap position, continues shredded paper, repeats above-mentioned steps a to d; As do not have paper feed, and then motor 1 shuts down after 3 seconds, and all relay switches all are opened, and system enters holding state.

Described stall testing circuit 43 has been known technology, mainly in order to the just commentaries on classics, counter-rotating, the slow-speed that detect motor 1 with state such as stop, and its signal is sent to control chip 41, and control chip 41 carries out the operation of fluid drive in view of the above.

Described tap terminals 423 is a known technology, briefly explains its operation principle herein:

The principle of tap shift is that the position by each tap of conversion changes the winding voltage turns ratio, also promptly changes the auxiliary winding number of turn and makes it to weaken the magnetic field intensity of stator to achieve the goal.What the utility model adopted is the tap shift, and three kinds of method of winding are arranged: 1, main winding, 2, middle winding.3, auxiliary winding.These three kinds of winding methods can be connected into L type and T type respectively.Wherein the L type is divided into L1 type and L2 type dual mode again.

Please again in conjunction with Fig. 2 and Fig. 4, Fig. 4 is an another kind of embodiment of the present utility model, and it has used ghyristor circuit as shift circuit, itself is known technology, existing with regard to its with paper shredder 9 combine and operation principle discloses:

Q2 is the twin crystal brake tube among Fig. 4, controls the operating voltage of motor by the angle of flow of controlling it, under different operating voltages, and the temperature rise difference of motor, thus reaching when operating on low voltage, power of motor is little, and caloric value is little, and the working time is long; And when high-pressure work, power is big, and caloric value is big, the purpose that the working time is short.

During civil power 220V zero passage, form zero cross detection circuit by R1 and U1, when control chip MCU when input pin pb.1 detects the civil power zero passage, delay time after several milliseconds, the output pin pb.2 output pulse-triggered twin crystal brake tube Q2 of control chip MCU, delay time is between 0 to 10ms, and it is long more to delay time, it is big more that bidirectional thyristor Q2 phase shift triggers the angle, and the operating voltage of motor is just low more.Output pin pb.2 and Hall element U1881 join, and in order to detect motor speed, slack-off when motor speed, control chip MCU in time adjusts delay time.Thereby adjust the operating voltage of motor, reach tatter amount and the shredded paper time this purpose that is inversely proportional to.

As seen, the utility model can make its applied shredder energy-conserving and environment-protective more, and is very popular.

Claims

1, a kind of intelligent shift paper shredder, comprise motor, travelling gear, rotor group and correspondent control circuits, motor is through the control circuit external power supply, and be connected with the rotor group by travelling gear, it is characterized in that: have control chip in this control circuit, this control chip is electrically connected with shift circuit and stall testing circuit, and this shift circuit and motor electrically connect, the paper feed state that control chip detects according to the stall testing circuit is regulated motor by shift circuit power consumption.

2, intelligent shift paper shredder according to claim 1 is characterized in that: described control chip is a singlechip chip.

3, intelligent shift paper shredder according to claim 2, it is characterized in that: described shift circuit comprises tap terminals and inversion switching circuit, at least two driving switch circuit of electrically connecting with tap terminals, and inversion switching circuit and each driving switch circuit all electrically connect with control chip.

4, according to any described intelligent shift paper shredder in the claim 1 to 3, it is characterized in that: described inversion switching circuit and each driving switch circuit are relay circuit.

5, intelligent shift paper shredder according to claim 1 and 2 is characterized in that: described shift circuit is a ghyristor circuit.