CN101032706A - Safe paper crashing machine and the touch sensing device in the paper inlet - Google Patents
Safe paper crashing machine and the touch sensing device in the paper inlet Download PDFInfo
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- CN101032706A CN101032706A CNA2007100273140A CN200710027314A CN101032706A CN 101032706 A CN101032706 A CN 101032706A CN A2007100273140 A CNA2007100273140 A CN A2007100273140A CN 200710027314 A CN200710027314 A CN 200710027314A CN 101032706 A CN101032706 A CN 101032706A
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- shredder
- electric
- paper feed
- feed port
- conductors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
- B02C2018/0023—Switching devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
- B02C2018/0046—Shape or construction of frames, housings or casings
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The present invention discloses one kind of touch inducing device for the paper feeding slot of paper shredder, and the touch inducing device includes one switch circuit to provide the control circuit of the paper shredder for altering the operation state and two conducting pieces mounted at the paper feeding slot and connected electrically to the switch circuit. The present invention further discloses one kind of safe paper shredder with the touch inducing device. The touch inducing device can induce the approach of human body or other conducting body to the paper feeding slot so as to switch the operation state of the paper shredder to ensure safety.
Description
Technical field
The present invention relates to a kind of safe shredder, and the paper feed port touch induction device that relates to the safe shredder of this kind.
Background technology
At home, shredder is only popularized in office at present, but abroad, shredder extensively enters every family, therefore, can know by inference, and domestic family expenses shredder future will be very general.
Traditional shredder is used for family, repeatedly accident once occurs, mainly is to injure children's finger.Consider that the children of family lack the factor of awareness of safety, the family expenses shredder need strengthen its performance at secure context, in order to avoid children's mistake will be pointed in the paper feed port of inserting shredder, causes occurring contingency.Even in the office application occasion, staff is strayed into the shredder paper feed port, causes accident occurring, also is the thing that idol has.
Therefore, the security function of reinforcement shredder is paid attention to by industry more and more.
On November 8th, 2006; the CN200610060917.6 patent application discloses a kind of shredder paper feed safeguard construction; it is provided with the protection pressing board at shredder paper feed port edge, and the bottom surface of protection pressing board is supported by the elasticity thing, and contacts with the pressure handle zero pressure of the microswitch of controlling the shredder electrical source of power.Preferably, the protection pressing board is a block protection pressing board of forming to press close to the long narrow bar shaped protection ring at shredder paper feed port edge, and its bottom surface is supported by at least two stage clips, and contacts with the pressure handle zero pressure of the microswitch of controlling the shredder electrical source of power.
In the practical application since the elasticity thing especially stage clip is easily because of mechanical fatigue follows the string, and the fine motion shape also loses sensitivity easily, therefore, the applicant thinks that this kind technical scheme is difficult to bring safe effect preferably.
Then, on January 3rd, 2007, the CN200610052681.1 patent application discloses a kind of safe shredder, include housing and the blade for shredding paper group in it, the motor that drives set of blades work and control motor are set and change the control circuit that stops, its middle shell surface thereon has paper feed port, described housing is a conductive material on the surface of its paper feed port edge at least, and include an electric-conductor, its first end is connected with conductive material surface electrical on the described housing, and its second end links to each other with control circuit.This technical scheme is touched the clutter induced signal that the shredder paper feed port produces for the human or animal; can automatically monitor and control the motor stall by a sensor circuit; and need not to come manual control operation by mechanical mode, therefore can play the effect of protection operator safety quickly and accurately.In addition, its inductive control circuit that provides also has auto restore facility, and when the abnormal work state was got rid of or shift, shredder can recover operate as normal again automatically.
The technical scheme of CN200610052681.1 patent application, utilizing human body in fact is the principle of a signal source, when human body touch arrives the conductive material of machine, by circuit signal is amplified, the control shredder stops operating, and reaches the purpose of safeguard protection.But, the applicant is engaged in the R﹠D work of shredder for a long time, though know very well this technical scheme to have higher relatively sensitivity than the CN200610060917.6 patent application, though can reach the purpose of security control to a certain extent, but have the unsettled shortcoming of service behaviour, its performance ratio is easier to be subjected to such environmental effects, as temperature, humidity, cabling mode, movement size and whether ground wire etc. is arranged, sensitivity when all influencing the human body touch induction easily, and its design difficulty is also bigger.Therefore, the human body that places one's entire reliance upon is the requirement that is difficult to reach high safety performance as the shredder paper feed port safeguard protection scheme of touch sensible signal source.
Summary of the invention
Protection above shortcomings in view of present shredder paper feed port; first purpose of the present invention is to provide a kind of paper feed port touch induction device; so that the ability of shredder paper feed port induction human body touch improves greatly; further do safe condition identification for shredder; in time control the running status of paper shredder, to improve the security performance of shredder.
For solving technical problem of the present invention, the present invention is achieved through the following technical solutions:
Paper feed port touch induction device of the present invention, comprise two electric-conductors and on-off circuit, two electric-conductors are installed on the shredder paper feed port so that certain interval is adjoining, and electrically connect with described on-off circuit respectively, described on-off circuit provide control signal to the control circuit of shredder for the operating condition of switching shredder.
Be the security performance of accentuator, be provided with current-limiting resistance in the branch road that forms of connecting between each electric-conductor and the on-off circuit.
More specifically, described on-off circuit comprises triode, and its base stage and colelctor electrode form branch road with one group of current-limiting resistance and an electric-conductor respectively successively, its grounded emitter, and the colelctor electrode external power supply, described control signal is drawn from its colelctor electrode.In addition, described on-off circuit also comprises electric capacity, is electrically connected between the base stage and emitter stage of triode.
For adapting to the human finger width, be advisable less than 1.5 centimetres in the maximal clearance between described two electric-conductors.
Disclose according to the first embodiment of the present invention, described two electric-conductors can be sheet metal or conductive plastic film, are arranged at the two side of the lengthwise of shredder paper feed port respectively.
Disclose according to a second embodiment of the present invention, described two electric-conductors can be the metal bare wire, and helical form is twined and is arranged at least one longitudinally side wall of paper feed port.
In addition, a third embodiment in accordance with the invention discloses, and described two electric-conductors are the metal bare wires of many parallel and series connection, and the metal bare wire of two electric-conductors intersects parallel arrangement mutually, is integrally formed at least one longitudinally side wall of paper feed port.
And then second purpose of the present invention is to use the described paper feed port touch induction device of first purpose, and a kind of safe shredder is provided.
This safe shredder comprises paper shredder, housing and control circuit, housing is provided with paper feed port, paper shredder is installed in the interior also corresponding described paper feed port of housing in order to shredded paper, described control circuit and described paper shredder electrically connect, be used to realize the management of shredder, in addition, the safety shredder also comprises the described touch induction device of first purpose.
Especially, disclose according to first embodiment of the invention, be this shredder of appropriate design, it is tabular that described two electric-conductors are lengthwise, and matching to merge with the two side of described paper feed port lengthwise is sticked respectively on it.For the ease of realizing the electric connection of electric-conductor and on-off circuit, described two electric-conductor bottom surfaces are provided with the metallic conduction utmost point, and described housing is to should conductive electrode being provided with corresponding through hole, and conductive electrode connects described through hole and described triode electrically connects.
Compared with prior art, the present invention has following advantage:
By on the basis of traditional shredder, setting up described paper feed port touch induction device, cooperate by two electric conductors, but conductive object contact paper feed port with higher sensitivity induction human body even insect and so on, then in time switch the operating condition of shredder, can improve the security performance of shredder, in order to avoid the accident of finger and so on occurs accidentally injuring, help shredder and popularize to the domestic consumer, further develop its market potential.
Description of drawings
Fig. 1 is the circuit theory diagrams of the paper feed port touch induction device of the first embodiment of the present invention;
Fig. 2 is the package assembly schematic diagram of cap portion of the housing of the first embodiment of the present invention;
Fig. 3 is the vertical middle cutaway view in the part of Fig. 1;
Fig. 4 is the structural representation of two electric conductors of the second embodiment of the present invention;
Fig. 5 is the structural representation of two electric conductors of the third embodiment of the present invention.
The specific embodiment
The basic structure of shredder generally is made up of housing, paper shredder and correspondent control circuits, housing generally (is consulted Fig. 2 by cavity and lid 2, form down together), described paper shredder is set up on cavity top, and the cavity bottom is provided with the container of dustbin and so on so that the paper scrap that forms behind the ccontaining paper shredder shredded paper.Paper shredder comprises two or three rotors that are arranged side by side and corresponding transmission mechanism, transmission mechanism is made up of motor combination gear group, gear train one end is connected with rotor, the other end is connected with motor, the drive motor of control circuit and paper shredder electrically connects, and therefore motor accepts the control of control circuit.Thus, the user makes its revolution that drives this transmission mechanism by control circuit is operated, and by motor linkage gear group, just can make the rotor of paper shredder realize the rolling shredded paper, reaches the purpose of shredded paper.Cavity top is protected by lid 2, and for necessity of shredded paper, the engagement position of two rotors of lid 2 corresponding described paper shredders should be provided with corresponding paper feed port 20 (consulting Fig. 2 and Fig. 3); In like manner, for the ease of operation, be used to provide the control panel of control button generally also to be arranged on this lid 2 in the described control circuit, the user can send instruction to described control circuit by the control button on this control panel of operation, again by carrying out corresponding various operations after the control circuit interpretative order, display operation process and result on the display device of control circuit, thus realize man-machine interaction.Be more common in the known technology owing to relate to the narration of the control circuit of paper shredder, therefore, do not give unnecessary details for this reason herein.
Fig. 1 shows the circuit theory diagrams of touch induction device of the present invention, comprises two electric- conductors 11,12, some current-limiting resistance R1, R2, R3, R4 and an on-off circuit.Described on-off circuit is made up of triode Q1 and capacitor C 1, and first electric-conductor 11 and first group of current-limiting resistance R1 after R2 electrically connects successively, insert the colelctor electrode (access point is VCC) of described triode Q1; Second electric-conductor 12 and second group of current-limiting resistance R3, after R4 electrically connects successively, insert the base stage of described triode Q1, the emitter stage of triode Q1 is ground connection then, also be provided with resistance R 5 between current-limiting resistance R2 and the triode Q1 colelctor electrode, meet power supply VCC between current-limiting resistance R2 and the resistance R 5, the control circuit (not shown) of outconnector OUT and shredder electrically connects between resistance R 5 and the triode Q1 colelctor electrode.
Current-limiting resistance R1 to R4 can prevent 11,12 o'clock too high accidents that take place of electric current of human body touch electric-conductor, can prevent the line fault that the VCC shorted to earth causes again.During concrete the application, make the suitable gap of maintenance between first electric-conductor 11 and second electric-conductor 12, touch first electric-conductor 11 easily simultaneously when brushing up against and second electric-conductor 12 is as the criterion with human finger, such as 1.5 centimetres.Because human body itself is a conductor, when human body touches two electric-conductors 11 simultaneously, 12 o'clock, being equivalent to current-limiting resistance R1 and R3 connects by a resistance, so, VCC end electric current flows into the emitter stage of triode Q1 successively by current-limiting resistance R2, R1, R3, R4, make the Q1 conducting, and low level appears in OUT point place; When human body leaves two electric- conductors 11,12 o'clock, occur opening circuit between current-limiting resistance R1 and the R3, triode Q1 ends, OUT point output high level.
Therefore, can two conductors of human body touch have been judged whether by the high-low level state that detection OUT is ordered, the level state that control circuit is ordered according to OUT, the normal operation that when high level, recovers paper shredder, when low level, stop the paper shredder running, just can realize the function of security control.Because human body has the induced signal of 50Hz, so sets up described capacitor C 1 in the on-off circuit originally as a signal source, be in order to eliminate the interference of these induced signals and other environment, to hand over every straight-through.
The shape of two electric- conductors 11,12 can freely design, and key is to make two electric- conductors 11,12 to keep described for judging the certain interval whether staff touches, and therefore, two electric- conductors 11,12 reasonably need be installed on the paper feed port 20 of shredder.
Fig. 2 and Fig. 3 have disclosed a kind of typical electric- conductor 11,12 and package assembly thereof jointly.On the lid 2 of shredder, this paper feed port 20 is long and narrow, has 23,24, two sidewalls 23,24 of two relative longitudinally side walls and be the waist shape on cross section.Accordingly, described two electric- conductors 11,12 use plated metal sheet or conductive plastic film, and integral body is the tabular of lengthwise, and it also is the waist shape on cross section, with with the two side 23 of described paper feed port 20 lengthwises, 24 match, and two electric- conductors 11,12 are sticked respectively at two sidewalls 23, on 24, make paper feed port 20 keep overall appearance thus.
See also Fig. 1 to Fig. 3, be first electric-conductor 11 with current-limiting resistance R1 be connected and second electric-conductor 12 and current-limiting resistance R3 between the needs that are connected, the through hole 230,240 for cabling need be set on the two side 23,24 of described paper feed port 20.The present invention is for making design effect better, set up the metallic conduction utmost point 110,120 respectively two electric- conductor 11,12 bottom surfaces, and in conductive electrode 110, internal thread hole is set on 120, and conductive electrode 110,120 connects two sidewalls 23,24 through hole 230, after 240, by use packing ring 112,122 and screw 111 in lid 2 bottoms, 121 screw locks are on this internal thread hole, can make two electric- conductors 11,12 firm with two sidewalls 23,24 of paper feed port 20, and can pass through packing ring 112,122 wiring so that two electric- conductors 11,12 final with on-off circuit in each end electric connection of triode Q1.
Two electric- conductors 11,12 can be by multiple known connected mode realization, as modes such as engaging of primary and secondary spare or screw locks with the further firm connection between paper feed port 20 two sides 23,24; In addition, the annexation of the internal thread hole of described conductive electrode 110,120 and screw 111,121 also can be realized by the mode that is equal to, as the engaging of primary and secondary spare, tapping screw tapping etc.
In the foregoing description, therefore two electric- conductors 11,12, can form a pair of contradiction that is difficult to be in harmonious proportion between the contact width of the paper feed thickness of paper feed port 20 and two electric- conductors 11,12 of conducting owing to need to match with two longitudinally side walls 23,24 of paper feed port 20.Therefore, further, can be with last embodiment remodeling, will described two electric- conductors 11,12 be designed to metal bare wire as shown in Figure 4, its helical form winding is arranged on paper feed port 20 one or two longitudinally side walls 23,24.Like this,, just can improve the human body sensitivity in when touch by a larger margin, and can go up an embodiment relatively and reduce cost, can obtain more excellent effect on the whole because the distance between the metal bare wire can freely design.
Except above-mentioned remodeling, described two electric- conductors 11,12 also can consider embodiment as shown in Figure 5, it is designed to the many metal bare wires that are parallel to each other and connect, shape such as E word, again the metal bare wire of two electric-conductors is intersected mutually parallel arrangement, be integrally formed on paper feed port 20 one or two longitudinally side walls 23,24.The effect of the effect of this embodiment and a last remodeling embodiment is basic identical, does not therefore give unnecessary details for this reason.
In sum, the present invention provides safer performance for traditional shredder, can detect the foreign material of paper feed port with higher sensitivity, is particularly advantageous in the situation that staff is strayed into that detects, help using safely shredder, be convenient to shredder further to the family expenses development.
Although represented and described the present invention with reference to specific preferred embodiment, but it shall not be construed as the restriction to the present invention self, those skilled in the art should be understood that, under the prerequisite of the spirit and scope of the present invention that do not break away from the claims definition, can make various variations in the form and details to it.Appending claims has covered all such changes and modifications in the spirit and scope of the invention.
Claims (18)
1, a kind of paper feed port touch induction device, it is characterized in that: comprise two electric-conductors and on-off circuit, two electric-conductors are installed on the shredder paper feed port so that certain interval is adjoining, and electrically connect with described on-off circuit respectively, described on-off circuit provide control signal to the control circuit of shredder for the operating condition of switching shredder.
2, paper feed port touch induction device according to claim 1 is characterized in that: be provided with current-limiting resistance in the branch road that forms of connecting between each electric-conductor and the on-off circuit.
3, paper feed port touch induction device according to claim 2, it is characterized in that: described on-off circuit comprises triode, its base stage and colelctor electrode form branch road with one group of current-limiting resistance and an electric-conductor respectively successively, its grounded emitter, the colelctor electrode external power supply, described control signal is drawn from its colelctor electrode.
4, paper feed port touch induction device according to claim 3, it is characterized in that: described on-off circuit also comprises electric capacity, is electrically connected between the base stage and emitter stage of triode.
5, paper feed port touch induction device according to claim 4 is characterized in that: the maximal clearance between described two electric-conductors is less than 1.5 centimetres.
6, according to any described paper feed port touch induction device of claim 1 to 5, it is characterized in that: described two electric-conductors are sheet metal or conductive plastic film, are arranged at the two side of the lengthwise of shredder paper feed port respectively.
7, according to any described paper feed port touch induction device in the claim 1 to 5, it is characterized in that: described two electric-conductors are the metal bare wire, and helical form is twined and is arranged at least one longitudinally side wall of paper feed port.
8, according to any described paper feed port touch induction device in the claim 1 to 5, it is characterized in that: described two electric-conductors are many parallel and connect metal bare wires, the metal bare wire of two electric-conductors intersects parallel arrangement mutually, is integrally formed at least one longitudinally side wall of paper feed port.
9, a kind of safe shredder, comprise paper shredder, housing and control circuit, housing is provided with paper feed port, paper shredder is installed in the interior also corresponding described paper feed port of housing in order to shredded paper, described control circuit and described paper shredder electrically connect, be used to realize the management of shredder, it is characterized in that: the safety shredder also comprises touch induction device, it comprises two electric-conductors and on-off circuit, two electric-conductors are installed at least one longitudinally side wall of described paper feed port with the certain interval vicinity, and electrically connect with described on-off circuit respectively, described on-off circuit and described control circuit electrically connect, and provide control signal to the operating condition of described control circuit for the switching shredder.
10, safe shredder according to claim 9 is characterized in that: be provided with current-limiting resistance in the branch road that forms between each electric-conductor and the on-off circuit.
11, safe shredder according to claim 10, it is characterized in that: described on-off circuit comprises triode, its base stage is connected with one group of current-limiting resistance and an electric-conductor successively respectively with colelctor electrode and is formed branch road, its grounded emitter, the colelctor electrode external power supply, described control signal is drawn from its colelctor electrode.
12, safe shredder according to claim 11, it is characterized in that: described on-off circuit also comprises electric capacity, is electrically connected between the base stage and emitter stage of triode.
13, safe shredder according to claim 12 is characterized in that: the maximal clearance between described two electric-conductors is less than 1.5 centimetres.
14, according to any described safe shredder of claim 9 to 13, it is characterized in that: described two electric-conductors are sheet metal or conductive plastic film, are arranged at the two side of the lengthwise of shredder paper feed port respectively.
15, safe shredder according to claim 14 is characterized in that: it is tabular that described two electric-conductors are lengthwise, and matching to merge with the two side of described paper feed port lengthwise is sticked respectively on it.
16, according to any described safe shredder in the claim 15, it is characterized in that: described two electric-conductor bottom surfaces are provided with the metallic conduction utmost point for wiring, described housing is to should conductive electrode being provided with corresponding through hole, and conductive electrode connects described through hole and described triode electrically connects.
17, according to any described safe shredder in the claim 9 to 13, it is characterized in that: described two electric-conductors are the metal bare wire, and helical form is twined and is arranged at least one longitudinally side wall of paper feed port.
18, according to any described safe shredder in the claim 9 to 13, it is characterized in that: described two electric-conductors are many parallel and connect metal bare wires, the metal bare wire of two electric-conductors intersects parallel arrangement mutually, is integrally formed at least one longitudinally side wall of paper feed port.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100273140A CN101032706A (en) | 2007-03-27 | 2007-03-27 | Safe paper crashing machine and the touch sensing device in the paper inlet |
| PCT/CN2007/001375 WO2008116350A1 (en) | 2007-03-27 | 2007-04-25 | A safety paper-shredder and its paper-inlet tactile sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100273140A CN101032706A (en) | 2007-03-27 | 2007-03-27 | Safe paper crashing machine and the touch sensing device in the paper inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101032706A true CN101032706A (en) | 2007-09-12 |
Family
ID=38729562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100273140A Pending CN101032706A (en) | 2007-03-27 | 2007-03-27 | Safe paper crashing machine and the touch sensing device in the paper inlet |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101032706A (en) |
| WO (1) | WO2008116350A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861718A (en) * | 2012-12-11 | 2014-06-18 | 丁雪强 | Paper shredder having touch protection |
| CN103861719A (en) * | 2012-12-11 | 2014-06-18 | 丁雪强 | Paper shredder provided with touch protection and suitable for treating wet paper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2843615Y (en) * | 2005-06-01 | 2006-12-06 | 世庆实业股份有限公司 | Paper crusher safety with emergent stopping function |
| US20070012808A1 (en) * | 2005-07-18 | 2007-01-18 | Cheng-Chung Kao | Shredder safety device having emergency stop |
| CN2813101Y (en) * | 2005-09-02 | 2006-09-06 | 世庆实业股份有限公司 | Paper mincing machine safety device with emergency stop function |
| CN2864758Y (en) * | 2006-01-24 | 2007-01-31 | 上海甘川工贸有限公司 | Control circuit for kneading machine |
| CN1857780A (en) * | 2006-06-06 | 2006-11-08 | 张舰 | Safe paper feeding structure for shredder |
| CN1887428B (en) * | 2006-07-27 | 2011-01-26 | 汪永国 | Safe shredder |
-
2007
- 2007-03-27 CN CNA2007100273140A patent/CN101032706A/en active Pending
- 2007-04-25 WO PCT/CN2007/001375 patent/WO2008116350A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861718A (en) * | 2012-12-11 | 2014-06-18 | 丁雪强 | Paper shredder having touch protection |
| CN103861719A (en) * | 2012-12-11 | 2014-06-18 | 丁雪强 | Paper shredder provided with touch protection and suitable for treating wet paper |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008116350A1 (en) | 2008-10-02 |
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Open date: 20070912 |