CN201300081Y

CN201300081Y - Paper shredder

Info

Publication number: CN201300081Y
Application number: CNU2008202125891U
Authority: CN
Inventors: 罗世凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-20
Filing date: 2008-10-20
Publication date: 2009-09-02
Anticipated expiration: 2018-10-20

Abstract

Disclosed is a paper shredder, which comprises a paper inlet on an outer casing, a power supply unit inside the outer casing, a motor driving circuit unit connected with the power supply unit, a paper shredding mechanical member, a human body sensing conductive polar plate installed inside the paper inlet, a control circuit unit and a human body sensing security auxiliary device of a human body sensing detection circuit unit, wherein the motor driving circuit unit actuates a motor to drive the paper shredding mechanical member. Additionally, the control circuit unit drives the circuit unit via the motor to be connected with the paper shredding mechanical member, the control circuit unit is further connected with the human body sensing conductive polar plate via the human body sensing detection circuit unit, and the control circuit unit is further connected with the power supply unit. Besides, the human body sensing security auxiliary device in hidden installation form does not affect the appearance of products, and the paper shredder can stop operating while the body of a user approaches the security auxiliary device, thereby the responsive speed is quicker than that of touching the security device and the protection function can be more effective for a long time. The utility model has the advantages of simple circuit structure, rather low costs, stable and reliable working performance, and wider application range.

Description

A kind of shredder

Technical field

The utility model relates to cutter or other cutting or tearing parts coming the fragmental broken facility of material are especially related to a kind of shredder of being with human body sensing safety servicing unit.

Background technology

Shredder in the market, in order to prevent that the user is subjected to the human injury in the process of using shredder, the particularly injury that causes of the sharp cutter that runs up below of shredder inlet, the following dual mode of main employing is protected user's personal safety: a kind of is the length that shredder is entered the mouth, wide being controlled in certain scope, to meet the IEC60950 of International Electrotechnical Commission golden finger testing standard, guarantee fund's finger is when the inlet of shredder imposes on 100 newton's power, can not touch the following blade of shredder inlet, reach the purpose of terminal user, but, the clothing on the person, hair, the inlet that jewellery still can enter shredder causes adverse consequences; Another kind is to adopt touch-type safety servicing unit; the user directly touches the conduction object of shredder inlet with limbs and cuts off the electricity supply by the mode of electronic circuit control; force shredder out of service; realize protection user's purpose; yet; the surperficial touch surface of this safe servicing unit must be conducting metal or carry out plated conductive and handle; cost is high and be unfavorable for environmental protection; and can not with the shared mold of whole loam cake; corresponding increase die sinking cost; also influence outward appearance, electroplated conductive layer can come off or part surface damage and cause this afunction in the particularly long-term use.

Summary of the invention

Technical problem to be solved in the utility model is the defective that remedies above-mentioned prior art, proposes a kind of shredder of band human body sensing safety servicing unit.

Technical problem of the present utility model is solved by the following technical programs.

This shredder comprises shell, is arranged on paper inlet on the shell, power subsystem in the enclosure, the motor-drive circuit unit that is connected with power subsystem is set, and by the shredded paper mechanical part of motor-drive circuit unit drives driven by motor.

The characteristics of this shredder are:

Be provided with human body sensing safety servicing unit, described human body sensing safety servicing unit comprises human body sensing conductive plate, setting control circuit unit and the human body induction detection circuit unit in the enclosure that is installed in the paper inlet.

Described control circuit unit is connected with the shredded paper mechanical part by the motor-drive circuit unit, is connected with the human body sensing conductive plate by the human body induction detection circuit unit, also is connected with power subsystem.

Described human body induction detection circuit unit comprises voltage cut-out circuit and earthed switch circuit, the input control end of described voltage cut-out circuit is connected with the human body sensing conductive plate, and output is connected with the input control end of earthed switch circuit, and the input of described earthed switch circuit is connected with the input control end of control circuit unit.

Described human body sensing conductive plate is a Copper Foil.

The beneficial effect that the utility model is compared with the prior art is:

The human body sensing safety servicing unit that is provided with belongs to concealed mounting means; do not influence product appearance, need the human body sensing conductive plate be set, needn't carry out conductive plated yet and handle at product surface; circuit structure is simple; cost is lower, stable and reliable working performance, and user's limbs are near safe servicing unit; shredder is stopped operating; reaction speed than the touching safety device is faster, and defencive function is more permanent effectively, and the scope of application is more extensive.

Description of drawings

Fig. 1 is the human body sensing safety servicing unit disintegration structural representation of the utility model specific embodiment;

Fig. 2 is that Fig. 1 device is used to control control of DC circuit unit and human body induction detection circuit element circuit figure;

Fig. 3 is control circuit unit and the human body induction detection circuit element circuit figure that Fig. 1 device is used to control alternating current generator.

The specific embodiment

Contrast accompanying drawing and the utility model is further described below in conjunction with the specific embodiment.

The shredder of band human body sensing safety servicing unit as shown in Figure 1, basic identical with existing shredder structure, comprise the shell 3, shredded paper mechanical part and the rubbish casing (not shown) that are provided with paper inlet, difference is the human body sensing conductive plate 1 that adopts Copper Foil to make is installed in the paper inlet, and the circuit board 2 that is provided with control circuit unit and human body induction detection circuit unit.

When as user's limbs of electrostatic power sources during near the paper inlet of shredder; with the human body sensing conductive plate 1 that is installed in the paper inlet human body sensing takes place just; on the human body sensing conductive plate 1 of Fig. 2, produce induced-current; the amplifying circuit that two-stage triode Q1, the Q2 of this induced-current in the control circuit unit of Fig. 2 forms produces control signal; the control DC motor control circuit; cut off the power supply of direct current generator, direct current generator quits work immediately, the safety of protection user limbs.

If shredder adopts alternating current generator; the amplifying circuit of forming at two-stage triode Q1, the Q2 of the induced-current that produces on the human body sensing conductive plate 1 at Fig. 3 in the control circuit unit of Fig. 3 produces control signal; the on-off circuit that control is made up of triode Q3; make the coil electricity of the relay R EL1 that is connected its colelctor electrode; directly cut off the alternating current generator power supply; alternating current generator quits work immediately, implements safeguard protection.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; and performance or purposes are identical, then should be considered as belonging to the protection domain that the utility model is determined by claims of being submitted to.

Claims

1. shredder, comprise shell, be arranged on paper inlet on the shell, power subsystem in the enclosure, the motor-drive circuit unit that is connected with power subsystem are set, and, it is characterized in that by the shredded paper mechanical part of motor-drive circuit unit drives driven by motor:

Be provided with human body sensing safety servicing unit, described human body sensing safety servicing unit comprises human body sensing conductive plate, setting control circuit unit and the human body induction detection circuit unit in the enclosure that is installed in the paper inlet;

2. shredder according to claim 1 is characterized in that:

3. shredder according to claim 1 and 2 is characterized in that:

Described human body sensing conductive plate is a Copper Foil.