CN1125685C - Safety mechanism for paper breaker - Google Patents

Abstract

A kind of safe structure is invented to evade the danger of fingers in the shredder. It stops the rotating cutter under any circumstances, when a wastebasket is taken out. An operation piece of detent is in the wastebasket to restrict the relationship between detent and microswitch. A stop switch to emergency stop is on the top flat, even if an accident is happened, it can make cutter stopping rotation immediately. The minced paper is inspected whether it exists or not through cam inspection. The automatic rotation can be realized from the beginning when the paper enters to the end. When the wastebasket is prone to inflex, a safe part shall be set to restrict the deformation of wastebasket to inner side and stop hand to enter from the inflexion.

Description

A kind of release mechanism of shredder

The invention relates to the shredder of the device that paper is chopped up, in detail, provide a plurality of release mechanism person in order to avoid causing danger.Specifically, be to have disclosed the formation that the rotating blade that makes shredder when urgent stops rapidly and safely.Simultaneously, also disclose according to having or not the existence of paper and automatically make the rotating blade rotation begin severing, or stop the rotation blade and finish the formation of severing.And, when having disclosed dustbin with crooked easily material forming such as plastics for fear of the formation of danger.

No matter be to distinguish public or home-use, because shredder is to have to utilize the structure of rotating blade with the paper severing, so the necessary safety of considering human body., if rotating blade then can be abnormally dangerous when the operator stretches into dustbin with hand absent-mindedly still in action when pulling out the rubbish utmost point case of storing the shredded paper bits in this mechanism.Therefore, for fear of so dangerous, when pulling out dustbin, anyway must stop the spinning movement of blade really.

In addition, in common shredder, just be provided with 3 kinds of switches that change (severing) switch, reversal switch and shutdown switch as console switch.Also promptly, be automatically, or the paper shredding cutters of inside will rotate and paper severing person according to pressing positive turn-off pass according to the paper of wanting severing is inserted the input port.Simultaneously, when paper obstruction etc. takes place in severing midway, can make the rotating blade counter-rotating and paper is discharged, be removed according to pressing reversal switch.On the one hand, after shutdown switch ties up to the severing of file etc., or rotating blade in the rotation is stopped and being provided with for certain.

Then, these switches, major part all is near the paper input port that is configured on the top board of severing portion, in design mostly the shift knob that is unified into identical size, height, presses with being pressed in top board and makes it actor.Then, near switch, show, or the shape of shift knob head or color are represented its function respectively according to the function of font.

, because of the input port of paper than broad, so because not the haveing the knack of or because of carelessness of operation, have the anxiety that the rotating blade in being rotated such as user's clothes or necktie is involved in sometimes.In this case, it is very difficult pressing the very little shutdown switch that is embedded in top board.Its reason is because of the flurried user of burst accident, the recollectedly event of console switch.

Then, as the mechanism of above-mentioned running automatically, the input port that ties up to paper usually is provided with detector, detects existing of paper with detector when paper is dropped into and controls the rotation of rotating blade.At this moment, because of there is certain distance the position of the severing part that detects position and rotating blade of detector, so even the terminal of paper has not had paper to exist by detector in detector portion, but the terminal of paper no show rotating blade still in fact.Therefore, in the blink before severing is over, need continue to make the rotating blade rotation., so be provided with delay circuit circuit on will thicken because of needs this moment, has the problem that costs time of making.

On the one hand, as detector mechanical starting bar is set, in the shredder of the kind of the CD-ROM drive motor power supply of directly connecting rotating blade by paper pushing starting bar, though can make less expensively, after paper passes through starting bar, microswitch will become disconnection, and fully by before the rotating blade, CD-ROM drive motor will stop at paper.Therefore, have in addition, till finishing severing, continue to make the motor rotation by manually pressing positive turn-off pass etc.

Simultaneously, shredder must be considered other danger sometimes.Also promptly, if shredder is cheap and when assembling simply, its material is a purpose and with forming synthetic resins such as plastics with light weight and a large amount of production usually.; the shredder of above-mentioned form; because of accommodating cabinet all is with crooked easily material formings such as plastics; so as shown in figure 25; sidewall 91 distortion to the inside when dustbin (drawer) 90 has from the side power to add; and severing portion 92 between cause the space, so there is finger can enter the danger of severing portion 92 inside from this space.This point, when dustbin is its length direction on pull-out direction, the end, heal more serious when dark simultaneously.Therefore, must solve these problems for fear of dangerous.

The present invention's first purpose has been the safe handling of shredder, is bound to stop the mechanism of the action of cutter when providing dustbin to pull out.

As the 2nd purpose, be that the switch that promptly stops to use is utilized easily, when the outer accident of instant generation sound is provided, the mechanism that the user promptly stops easily.

As other purpose more, system is provided at when paper drops into shredder and it to be detected and makes the cutter action, if the mechanism that when not having paper it is detected and cutter is stopped not to need to use photodetector etc. and the mechanism that can start automatically really, stop automatically.

Simultaneously, when dustbin is made with plastics of easy bending etc., provide should bending in order to revisal mechanism.

Particularly, in order to realize the 1st purpose, and exploitation is provided with the release mechanism of shredder of form of the dustbin of drawer type at downside.In main this mechanism, with the rectangular sidewall of the pull-out direction of dustbin, also be the top of any one wall in the wall of the wall of front or depths, be equipped with operating sheet in order to console switch.Then, the actuator that operating sheet will console switch on the position of this dustbin sealing, by driving power closure with rotating blade, and to above-mentioned rotating blade supply power.By actuator can ONOFF open relation be located at rotating blade driving power circuit midway, operating sheet can be pressed actuator when dustbin was closed, circuit will closure and supply power in view of the above.More specifically, the prominent operating sheet of establishing on the sidewall of the front of dustbin, and below above-mentioned severing portion and the position of aforesaid operations sheet correspondence the slit that the aforesaid operations sheet passes through is set, with have the lower cover of the actuator of microswitch in this inboard, slit, operate above-mentioned actuator in the detent position aforesaid operations sector-meeting of above-mentioned rubbish.

As in order to realize the basic comprising of the 2nd purpose, the present invention, system often trend towards upward to the switchboard of roomy area be arranged on the top board of severing portion roughly with on simultaneously, and the optional position under this switchboard is provided with to reduce according to switchboard and moves so that the microswitch that rotating blade stops.Simultaneously, on the support that the both sides middle body of the top board inboard of severing portion is provided with respectively, the front end of a pair of actuating strut of free rotation ground supporting, the switchboard more roomy than other switch areas is installed, this switchboard is supported by the big ground, flat spring trend top of the width that is fixed on top board, adopt the optional position under switchboard simultaneously, be provided with according to the reduction of switchboard and move so that the device of the microswitch that rotating blade stops.So this shutdown switch, broaden by the area that makes the switchboard that tends to the top,, do not recognize that the position of switchboard also can make switchboard descend with the small action of hand or health even when urgent, the microswitch of inside can move, and rotating blade is stopped.

In order to realize the 3rd purpose; in the present invention, be that the outstanding paper that is arranged in the paper input port is detected plate, hold at one of power transmission shaft that detects the plate bearer bar but be fixed on free rotary ground supporting; his end at this power transmission shaft is fixed starting bar, and makes paper detect plate and starting bar can rotate linkedly.Then, make the actuator of microswitch face the front end of starting bar, and and rotating blade interlock rotation, lateral surface in the switch cam that makes above-mentioned actuator action raises projection in the circumferencial direction setting, on the one hand, but be located at the moving plate front end of the starting bar stopper of body left side frame, be provided with the locking protrusion of giving prominence in the rotation field of above-mentioned starting bar.Meanwhile, by keeping off the position that connects, be provided with the formation of removing with projection and solve above-mentioned problem with the projection that raises of aforementioned switches cam lateral surface.

By adopting above-mentioned formation, in the present invention, be that paper detects plate and can rotate when paper is inserted, starting bar that can interlock via power transmission shaft will rotate and the actuator that pushes microswitch makes the CD-ROM drive motor action, makes the rotating blade rotation and begins to cut out the person.At this moment, according to locking protrusion is the recovery that stops starting bar temporarily, even detect the terminal of paper, also more pushing above-mentioned actuator with the cam surface of switch cam makes rotating blade continue rotation, thereafter raising projection with the rotation of switch cam pushes the starting bar stopper to foreign side, the card of removing starting bar only makes it to restore and is original state, and makes the rotating blade person of stopping the rotation.Therefore, till the raising projection and remove the card of starting bar and end of switch cam, rotating blade will continue rotation and can be to the complete severing of the terminal of paper after detecting the terminal of paper.

In order to realize the 4th purpose, in the present invention, be the upper limb at least that adopts corresponding dustbin sidewall, the restriction sidewall to the inside the safe guiding element of bent position with stopper at the pull-out direction of a dustbin device that ends freely to rotate.During according to this mechanism, the stopper on the safe guiding element when from the side to the dustbin application of force, will contact with the sidewall of bending, and the restriction sidewall is out of shape more to the inside, so can not produce the space that finger can enter between severing portion and dustbin.Simultaneously, because of safety guiding element system freely rotates to the pull-out direction of dustbin, so dustbin is freed in and out with having no obstacle.Moreover, in the present invention with stopper " at least with the upper limb correspondence " as important document, be because of only limiting this part bending to the inside to contact with upper limb, just can realize that purpose is to die.But, being not limited to this, the length of adjusting stopper makes it to heal when big with the contact width of sidewall, and the effect that prevents sidewall distortion is more greatly.

Other formation and the interests that can access from the present invention are according to just easily understanding with reference to following drawings and Examples.

The accompanying drawing drawing is simply described as follows:

Fig. 1 is all oblique views of shredder;

Fig. 2 is a part of breach oblique view of lower cover;

Fig. 3 is the oblique view of dustbin;

Fig. 4 is the oblique view of the relation of demonstration dustbin and microswitch;

Fig. 5 is the oblique view of an example of demonstration handle;

Fig. 6 is the plane of severing portion;

Fig. 7 is the partial sectional view of the action of explanation shutdown switch;

Fig. 8 is the local expanded view of microswitch part;

Fig. 9 is the partial plan layout of other configuration examples of demonstration shutdown switch;

Figure 10 is the partial sectional view of Fig. 9;

Figure 11 is the plane that shows in order to the summary of the cutter part of the shredder of reaching the 3rd purpose;

Figure 12 is for showing the front view that is suitable for the summary of mechanism;

Figure 13 is the local expanded view of the A portion of Figure 12;

Figure 14 is the side view of Figure 13;

Figure 15 is the sectional drawing of switch cam,

Figure 16 (A) is for shaking the oblique view of sheet, and Figure 16 (B) is for shaking the sectional drawing of sheet;

Figure 17 (A), (B) end the key diagram of state for the card that shakes sheet,

Figure 18 (A)-(F) is the key diagram of action of a speed of starting bar, microswitch and cam mechanism;

Figure 19 (A) is the front elevation of other embodiment of locking protrusion, (B) is the local expanded view of locking protrusion;

Figure 20 is the action specification figure of other embodiment of locking protrusion;

Figure 21 is demonstration in order to the oblique view of the relation of the safe guiding element of reaching the 4th purpose and dustbin;

Figure 22 is the ideograph of demonstration according to the distortion regulation of the dustbin of safety guiding element;

Figure 23 is for showing full ideograph of pacifying the rotary state of guiding element;

Figure 24 is the oblique view of the safe guiding element of other embodiment of demonstration;

Figure 25 is the ideograph in the knee of the dustbin of the known shredder of demonstration.

Below, describe one embodiment of the invention with reference to the accompanying drawings in detail.Fig. 1 is the oblique view of the shredder of employing the present invention formation.1 is severing portion, is provided with rotating blade (not shown) in inside, is provided with the input port of paper and necessary power switch etc. on the one hand in the outside.These basic property formations are not the state that is defined in diagram, will be useful in all well-known shredders.2 are the lower cover of severing portion 1, and 3 for having the dustbin corresponding to the box shape of side structure under the lower cover 2,4 for and dustbin 3 roughly the same formations accommodate case.Moreover, because of dustbin 3 and accommodate case 4 need be as the drawer effect, so system is housed in the framework 5 that the skeleton by one forms, as freely pulling out this framework 5.The basic comprising of framework 5 is the upright shape of establishing 4 pillars and four sides being opened.Then, four corners of lower cover 2 will be positioned in the top of framework 5 unchangeably.In the present invention, be that basis must be sealed the power supplys that could connect drive division to dustbin 3 really, and constitute release mechanism.6 for being located at the mobile castor of using of framework frame 3 lower ends.Simultaneously, top board 7 in severing portion 1, positive turn-off is set near paper input port 8 closes 9a and reversal switch 9b, simultaneously at top board 7 the first sections through whole width, be provided with from top board 7 same tilt towards the front lower place have the shutdown switch 10 of the switchboard (aftermentioned) of roomy area than other switches.

Then describe release mechanism in detail as above-mentioned the 1st purpose.Fig. 2 is for showing the oblique view of lower cover 2,11 hollow bulbs that pass through for the severing bits, and 12 is the microswitch as the safety switch effect, and 12a is the actuator of microswitch, and 13 is that be located at can be the slit of actuator 12a from the position of peripheral operation.Fig. 3 is the oblique view of dustbin 3, and 21 is the operating sheet of actuator 12a, and operate actuator 12a under with dustbin 3 complete closing state is as the relation of the microswitch 12 that connects ONOFF switch function.Fig. 4 is the relation that shows the operating sheet 21 and the microswitch 12 of this closed condition.Then, when microswitch 12 connects according to operating sheet 21, though the power-supply circuit of the drive division of rotating blade is in closed circuit,, power-supply circuit will disconnect during microswitch 12OFF as long as dustbin 3 is pulled out a little, and the rotation of cutter will promptly stop.Moreover, though be that a pair of operating sheet 21 is set,,, just can fully reach its function as long as between shown in the width A, be provided with 1 as the purpose of operate actuator 12a in Fig. 3.Though it is a pair of that the slit 13 of while Fig. 2 also is provided with, need only 1 just enough according to identical reason.As present embodiment ground these are provided with a pair ofly in symmetric position, have been the reason of considering aesthetic feeling, but sometimes omission have been become the formation in the left side on drawing.But, become the installation direction of microswitch 12 as required when opposite, the slit and the operating sheet of opposition side will functions certainly.

Though operating sheet 21 ties up on the dustbin 3 and is set as one in Fig. 3, also can use the handle cover 22 that constitutes in addition with dustbin 3 as illustrated in fig. 5, at these handle cover 22 forming operation sheets 21, with it chimeric handle portion that is installed in dustbin 3.The feature of this embodiment is because of need operating sheet 21 not being formed at dustbin 3, so make dustbin 3 and the structure of accommodating case 4, when other are all identical except height, can exchanging both as required.Also promptly, the chance of user's severing paper for a long time can be with darker case as dustbin, otherwise can be one of more shallow side as dustbin and convenient the use.Moreover, though accommodating 4 in case, embodiment shown in Figure 1 makes 1, more than 2 when stacked, the present invention's formation is also had no effect.

In the embodiment of above-mentioned explanation, be to constitute lower cover 2 in addition with severing portion 1, and at this inner microswitch 12 of installing.But not necessarily to constitute severing portion 1 and lower cover 2 in addition, also microswitch 12 and slit 13 can be located at the base side of severing portion 1.In the present invention do not need the person, it is the position of closing the dustbin 3 of setting operation sheet 21, the actuator 12a that operating sheet 21 can be operated microswitch 12 supplies with the driving power of rotating blade, as long as this can be finished, just may suitably change above-mentioned lower cover 2.For example, the structure of lower cover 2 needs also promptly also can freely be located in the severing portion 1 to microswitch 12, slit 13 and to the mounting portion in four corners of framework 5 etc.

And, with the position of operating sheet and microswitch, be not as embodiment be located at the front and be provided in a side of the depths of dustbin, effect technically is also identical.At this moment, operating sheet ties up between the width of B of Fig. 3 and is provided with 1, just operates the actuator of microswitch when dustbin 3 is closed fully, with the driving power circuit closure.

According to release mechanism so, if dustbin is not closed fully then cutter will can not rotate, not only safety just can stop driving as long as dustbin pulled out simultaneously when discarded shredded paper bits, and is very convenient so do not need other console switch.Simultaneously, operating sheet is located on the handle, and with this handle as free loading and unloading person, the highly different other casees of accommodating can be migrated and are dustbin, and become the formation easy to use that can change size as required.

Below explanation is in order to realize the desirable embodiment of the 2nd purpose.Basically will directly adopt the formation of the shredder of Fig. 1, will be according to well-known control circuit (not shown) etc., the ON action of closing 9a according to positive turn-off makes rotating blade start beginning severing action, makes rotating blade get rid of paper obstruction etc. to opposite spin according to reversal switch 9b.Moreover shutdown switch 10 is that action makes the rotating blade person of stopping according to ON as described above.Just in case when being involved in accident such as rotating blade because of the part of generation clothes such as careless or necktie etc., the user does not need to realize the position of too small switch, as long as press the first section of top board 7 with a hand or the part of health, shutdown switch 10 will move and the rotation of the blade that stops the rotation really, can avoid dangerous.Also be, area because of the switchboard 31 of shutdown switch 10 is more roomy terrifically than other switches 9a, 9b as illustrated in fig. 6, be provided with simultaneously along the front, thus be not button to be pressed into action in the top board as known person, and be that the step switch that the first section is beaten from above will move.Simultaneously, because of forwards being provided with obliquely, thus will move along the direction of inclined plane slip with the orientation independent ground hand of pressing of hand, and can make the action of switch become complete person.

Fig. 6～Fig. 8 is the routine person of demonstration about the structure of the shutdown switch 10 of above-mentioned rotating blade, among the figure, switchboard 31 be with its width make with the width in front of this top board 7 slightly with, and make than other switches 9a, the extremely wide area of 9b, from top board 7 same face forward inclination persons.Then, support 32,32 is set in the both sides of the summary central authorities of the length direction of top board inboard, be bearing in the actuating strut 33,33 of the brachium on the support free to rotately before end above-mentioned switchboard 31 is installed.34 for being fixed on the roomy flat spring of leading section inboard of top board 7, and above-mentioned switchboard 31 is being supported from dorsal part trend top, therefore, by long-armed this actuating strut 33 and flat spring 34, makes switchboard 31 maintenance levels and move up and down.At this moment, because of switchboard is supported by roomy flat spring 34, so no matter press any part of switchboard 31, switchboard 31 all will reduce downwards equably, with also can move by small displacement under state microswitch and complement each other, and can positively move as shutdown switch.35 tie up to the microswitch of the below of above-mentioned switchboard 31 with fixed head 36 supportings, constitute the part of power circuit or control circuit (not shown), make the rotation of a pair of rotating blade 39 not stop the person at once according to the ON action of switch.37 is the action movie of microswitch 35, and along with pressing of switchboard 31, the outstanding spring 38 that is provided with will reduce at switchboard 31 back sides, and makes microswitch 35ON actor.This spring 38 also makes microswitch 35 not be subjected to dash effect after the excessive loads.40 for driving the motor of a pair of rotating blade 39.

Then, Fig. 9, Figure 10 are other embodiment persons that show Fig. 6, and among the figure, 41 be spring, locate more than below switchboard 31 (being 4 places among the figure) via about a pair of leading axle 42 establish for thirty years of age so that all support switchboard 31.Then, when pressing switchboard 31, be located at the action projection 43 below its switchboard 31, will depress the action movie 37 of microswitch 35 and microswitch 35 will move, and rotating blade is stopped.When switchboard 31 was supported as this routinely, switchboard 31 will tilt and reduce when pressing the end of switchboard 31, action movie 37 can't be depressed fully, and the anxiety that has microswitch 35 can not move.Therefore, microswitch system be provided with at least as shown in figure 2 places or more than, make it as long as wherein any one microswitch action just can make rotating blade stop to be ideal according to the OR logic.

Moreover these shutdown switches are not limited to be useful in the shredder of the foregoing description, also can be useful in the shredder of form of ownership certainly.Simultaneously,, also be not limited to the foregoing description about the position of switchboard 31 is set, can according to the form of shredder and with the position relation of its paper input port, and be arranged on the front face side of paper input port or either party lateral section of the left and right sides.Mainly be, be provided with, just can realize the present invention's the 2nd purpose by any side of the shutdown switch that the area of switchboard is extremely roomy along severing portion 2.

Then, disclose the desirable embodiment of startup, auto-stop mechanism automatically of the 3rd purpose.Figure 11 and Figure 12 are the plane and the front elevation of summary of cutter part that show to be suitable for the present invention's shredder.51 is correct frame, and 52 is left frame, and 53,53 is a pair of rotating blade of free rotary ground supporting 51,52 of two parallel frameworks.54,54 is that the axle head that is installed in a side of rotating blade 53 makes it intermeshing moving gear altogether, is to make the moving altogether round about mutually revolver of rotating blade 53,53.55 for being installed in the driven wheel of axle head of CD-ROM drive motor 56, via travelling gear 57 moment of torsion of CD-ROM drive motor 56 is passed to above-mentioned moving gear 54 altogether, drives rotating blade.Moreover, omissions such as the framework of shredder body and circuit.58 is the paper input port, faces on the rotating blade 53 and is erected at 51,52 of two frameworks, the paper of severing is guided to the occlusion portion of rotating blade 53.Simultaneously, 59,59 is that a side-prominent paper that is provided with by part at paper from above-mentioned paper input port 58 detects plate, the one end is fixed on following power transmission shaft 60 enables rotation, simultaneously front end ties up to side within the other party of paper input port 58, faces across prominent 61,61 persons of guide protrusion that establish of institute's Fixed width degree.62 be the expression side that is located at paper input port 58 detect the plate bearer bar, protection sheet is detected the rotation of plate 59, simultaneously power transmission shaft 60 free rotary ground supporting persons.

Below, illustrate that paper detects the action of plate 59.When at first the paper of wanting severing being dropped into, the front end of paper will carry out along the protuberance of guide protrusion 61 and paper is detected plate 59 release to foreign side, will keep its state during having that paper exists.Also promptly, it will be center back side rotation with power transmission shaft 60 that paper detects plate 59, detect the intrusion of paper and will pass through according to the rotation of this power transmission shaft 60.On the one hand, when no longer including paper and existing, detect plate will according to paper detect plate 59 moment and to above-mentioned positive veer opposite spin, paper detects plate 59 and can restore to original position, and is judged to be the state of no paper.

Moreover, though in the above-described embodiments, be paper to be detected plate 59 be located near the central portion 2 places, be not limited to this, in order correctly to detect the terminal part of the paper that is not rectangle, the full duration in paper input port 58 is provided with many places for desirable.

Below, Figure 13 is that Figure 14 is its side view at the enlarged drawing of the A part of Figure 12 demonstration.Among the figure, power transmission shaft 60 ties up to and detects free rotary ground supporting in the plate bearer bar 62, and at one end fixedly paper detects plate 59, and at his end with the state set of starting bar 63 to hang down.Therefore, starting bar 63 will detect plate 59 interlocks and rotates via power transmission shaft 60 and paper.64 is switch cam, is fixed on the axle head of the rotating shaft 53a of one of aforementioned a pair of rotating blade 53 side, and according to its rotation, retaining is connected on the actuator 72 of microswitch 71 described later, realizes the ONOFF actor of this microswitch 71.Then, this switch cam 64 is as shown in figure 15, the part of cylinder is cut breach, slightly half cycle is maintained the cam surface 64a of the long radius of ON state as the actuator 72 of pushing microswitch with it, and other half cycle system is as separately making microswitch become the cam surface 64b of the minor radius of OFF state from actuator.Simultaneously, at the lateral surface of switch cam 64, be provided with at circumferencial direction the releasing of following starting bar stopper 66 is raised projection 65 with projection 70 to the semicircle tubular of foreign side pushing.

Starting bar stopper 66 is that the lower end is fixed on left frame 52, but simultaneously the front end of the moving plate 66a the side that extends to starting bar 63 upward near sets up axis of rocking 67, and install with this as axle become freely shake shake sheet 68.Then, in this lower end of shaking sheet 68, be provided with and give prominence in the rotation field of starting bar 63, the front is as the sliding surface 69a that tilts, and the back side is as the locking protrusion 69 (with reference to Figure 16) of the triangle of locking surface 69b.But keeping off on the position that connects, be provided with and remove simultaneously with projection 70 with the projection 65 that raises of moving plate 66a.This shakes sheet 68, system normally contacts as illustrated in fig. 17 on starting bar 63, when rearward rotating but starting bar 63 and paper detect plate 59 interlocks, starting bar 63 will simultaneously shake sheet 68 and push the rear to and advance along sliding surface 69a, after passing through fully, shaking sheet 68 will restore to original state by moment, stop the rehabilitee of starting bar 63 with the locking surface 69b at its back side.

Adopting the reason of so blocking locking mechanism, is according to following reason.Also be, detecting in the mechanism of the present invention, system as above-mentioned, paper detects plate 59 and will rotate according to the insertion of paper, the starting bar 63 of interlock will simultaneously push locking protrusion 69 and the revolver therewith, so when if the rotation of starting bar 63 has resistance when severing thin paper etc., even paper is inserted, the paper of generation and starting bar 63 mutual interlocks detects the situation that plate 59 can not be pressed into sometimes, therefore need alleviate the resistance to starting bar 63 as far as possible.

Microswitch 71 is directly to tie with all power circuits of shredder, and directly controls rotation, the person of stopping of aforementioned CD-ROM drive motor 56.The front end of its actuator 72 ties up to fine motion worker close 71OFF state time contact on end parts before the starting bar 63.Simultaneously, this microswitch 71 is fastened when stating switch cam 64 and rotating along with the rotation of rotating blade 53, and the cam surface 64a retaining that is installed in one of the big side of radius is connected between the actuator 72, and microswitch 71 can become the position of ON state.Moreover, the diagram of omission electric wiring.

Below, the automatic startup according to above-mentioned formation, the action of auto-stop mechanism are described.Usually, about the control of shredder CD-ROM drive motor, just be provided with the change-over switch of changeing, reversing, (starting automatically, stop automatically) automatically.Wherein, system of mechanism of the present invention is to select can be used as prerequisite when turning round automatically.

Figure 18 (A) is the halted state person before expression paper drops into, and to detect plate 59 be to give prominence to paper in paper input port 58 by part to paper when this state, and be tied to form the state that hangs down for deadweight via the starting bar 63 of power transmission shaft 60 interlocks.Therefore, the actuator 72 of microswitch 71 also becomes the OFF state, and CD-ROM drive motor 56 is to stop.Simultaneously, switch cam 64 also is the little cam surface 64b of diameter, in the position of subtend in actuator 72.

Then, shown in Figure 18 (B), when paper (P) is fed into paper input port 58, because of paper will go forward and then paper will be detected plate 59 to act on to foreign side pushing ground at guide protrusion 61, so it can be that the center rotates with power transmission shaft 60 that paper detects plate 59, as a result, being connected with also will interlock at the starting bar 63 of power transmission shaft 60 his ends and rotate as the center with this power transmission shaft 60.According to the rotation of this starting bar 63, will push the actuator 72 of microswitch 71 and make microswitch 71 become the ON state, CD-ROM drive motor 56 will rotate, and beginning is according to the severing of the paper (P) of the rotation of rotating blade 53.At this moment, starting bar 63 will slide along the sliding surface 69a of the locking protrusion 69 that shakes sheet 68 lower ends, one side rearward pushes via axis of rocking 67 and advances shaking sheet 68, will restore to original position at the back side of starting bar 63 by its momentum after starting bar 63 passes through and shake sheet 68.Though switch cam 64 is to rotate simultaneously with rotating blade 53, but detect between the plate 59 by paper at paper (P), because of starting bar 63 continues the actuator 72 of pushing microswitches 71, so rotating blade 53 can rotate with the location independent ground continuation of the cam surface of switch cam 64.

On the other hand, shown in Figure 18 (C), when the terminal of paper (P) has detected plate 59 by paper, though starting bar 63 can be wanted recovery state extremely originally according to momentum, but as restored in original position because of shaking sheet 68 above-mentionedly, so the back side of starting bar 63 is connected on retaining on the locking surface 69b of the locking protrusion 69 that shakes sheet 68, and stop the recovery of starting bar 63.At this moment, because of switch cam 64 big footpath one sides' cam surface 64a actuator 72 pushings, so microswitch 71 will be kept the ON state, and rotating blade 53 can continue to rotate.

When coming the position shown in Figure 18 (D) when switch cam 64 rotation, the retaining with actuator 72 of switch cam 64 connects face, will travel to the cam surface 64b of path from the cam surface 64a in big footpath, and actuator 72 can want to reply the OFF state., stop starting bar 63, stop recovery at starting bar 63 so actuator 72 will be kept contact because of shaking sheet 68.Therefore, microswitch 71 will be kept the ON state, and rotating blade 53 will continue rotation.

When switch cam 64 is rotated and during position shown in Figure 18 (E) again, the raising projection 65 and will keep off the releasing that is connected on starting bar stopper 66 and it is released to foreign side of switch cam 64 lateral surfaces with on the projection 70.So, but because of be located at moving plate 66a upper end to shake sheet 68 all, will step back and locking protrusion 69 can come off from the back side of starting bar 63, restore to original initial position according to momentum so starting bar 63 is understood.Yet this moment, actuator 72 connect owing to there is the cam surface 64a in switch cam 64 big footpaths to keep off, so microswitch 71 is still kept the ON state, and rotating blade 53 will continue rotation.

When arriving the position shown in Figure 18 (F) when switch cam 64 rotation, the retaining of the actuator 72 of itself and switch cam 64 connects face, to move to the cam surface 64b of path from the cam surface 64a in big footpath, microswitch 71 will become the OFF state and CD-ROM drive motor 56 and rotating blade 53 can stop.That is, will return back to the state of above-mentioned (A).

According to above action, after paper (P) detects plate 59 by paper, also shown in Figure 18 (D)～(F), switch cam 64, in other words between rotating blade 53 rotates more than the half-turns, microswitch 71 will be kept the ON state, and CD-ROM drive motor 56 and rotating blade 53 can continue rotation.Therefore, really severing to the terminal of paper.

Moreover, in the above-described embodiments, the effective length of the cam surface 64b of the cam surface 64a of long radius and minor radius can be changed, or not with the rotating shaft 53a of switch cam 64 straight knots at rotating blade 53, and connect via suitable gear reduction, can be the ON state continuing time of microswitch 71, i.e. the continuation time of the rotation of CD-ROM drive motor 56 is adjusted into longer.

Figure 19 (A), (B) are other embodiment persons that show above-mentioned starting bar stopper 66, are the card that is equivalent to the locking protrusion 69 of previous embodiment is ended member 73, but are directly arranged in moving plate 66a end person before.Also promptly, when paper was dropped into, starting bar 63 as illustrated in fig. 20, will detect the action of plate 59 and rotated according to paper.At this moment, starting bar 63 card that will slide ends on the sliding surface 73a of member 73, but one side moving plate 66a is all pushed to the rear and advances, but moving plate 66a will be recovered to original state according to its elastic force after starting bar 63 passes through fully.Thereafter will become the action identical with previous embodiment, the locking surface 73b that card ends member 73 even paper has been ended also will stop the recovery of starting bar 63, and make swivel plate 53 continue to rotate.Thereafter, when switch cam 64 raise releasing that projection 65 raises starting bar stopper 66 with projection 70 time, the card that ends member 73 because of card only can come off, starting bar 63 will restore according to momentum and be original state.In the present embodiment, the formation of ending member 73 because of card does not need axis of rocking 67 etc., and it is extremely simple that formation will become, so can manage to alleviate cost of manufacture etc.But this moment is when ending member 73 and push foreign side to when starting bar 63 and card, but the elastic force that needs to surpass moving plate 66a make it to rotate, advance, so become the paper of severing object, will become and can be pressed into the thickness person that paper detects plate 59.

So, automatically startup, the auto-stop mechanism of 1 purpose of the present invention are the effect that also makes rotating blade continue to rotate certain hour after the end of a period of paper with detecting, with simple cam mechanism implementor, because of being not according to other circuit etc., so it is with low cost as before.

At last, desirable embodiment about the 4th purpose of finishing the present invention is described.Present embodiment is for example at Fig. 1, with dustbin 3 with to accommodate case 4 be purpose with light weight and a large amount of production, and with plastics etc. easily during the material formation of bending, in order to avoid the danger to human body.

Figure 21 is demonstration as the safe guiding element 81 of desirable safety device and the oblique view of the relation of dustbin 3, for convenience of description, and the severing portion 2 among Fig. 1, accommodate case 4 and framework 5 dispenses.In the present embodiment and the rising wood 3b of two side 3a, the 3a of dustbin 3,3b correspondence, according to having the safe guiding element 81 that is positioned at its inboard stopper 81a, 81a, axle ends on the guide bracket 2a that is formed at lower cover 2, and constitutes release mechanism.Simultaneously, stopper 81a, 81a are mutually with coupling member 82 frame linkings, as crank shape recessed in the middle of all formations.According to this formation, as shown in figure 22, even have external force P to apply to the inside at dustbin 3 from the side, stopper 81a will contact with rising wood 3b, is out of shape more to the inside and can limit sidewall 3a.Therefore, can not produce the space that finger can enter between dustbin 3 and lower cover 2, even dustbin 3 during with the material forming of easy bending, finger can not enter severing portion 1 and very safe yet.At this moment, between stopper 81a and sidewall 3a, be provided with so that dustbin 3 when successfully taking out the space of putting into usefulness, though might this part and the bending of sidewall 3a and safe guiding element 7 is moved to the left and right, but in the present embodiment, can be adjusted accordingly because of making within the length L of coupling member 82 and the dustbin 3 width W, and make above-mentioned space become Min., so the shortcoming of having no way of and causing in moving of safety guiding element 81.In addition,, cut apart pin etc., adopt other well-known devices that formation of the present invention is not had any influence though have to put at the axial region 81b of safety guiding element 7 as the axle locking apparatus that moves of the safe guiding element 81 of restriction.

On the one hand, safe guiding element 81 because of the pull-out direction that ties up to dustbin 3 freely to rotate axle end, as shown in figure 23, be the safe guiding element 81 of overhang usually, will rotate according to the advance and retreat of the backboard 3c of dustbin 3, so dustbin 3 can be had no to put into taking-up with hindering.Simultaneously, dustbin 3 is taken out when putting into, coupling member 82 will rotate, according to the stirring action of this moment at every turn, will bring into play the severing bits that accumulate in dustbin 3 are done into the smooth function of certain degree, so can prevent shortcomings such as rotating blade that the obstruction owing to the severing bits causes stops.

Other embodiment of release mechanism then, are described according to Figure 24.Present embodiment be according to coupling member 82 with 1st embodiment of stopper as one in, omit coupling member 82, and with safe guiding element about 83 constitutor severally.At this moment, according to the formation that adopts axial region 83b, 83b can not come off from guide bracket 2a, can the same ground with the foregoing description, restriction sidewall 3a, 3a distortion to the inside also can freely be carried out simultaneously the taking-up of dustbin 3 and put into.

Moreover, though in above-mentioned 2 embodiment, be to constitute lower cover 2 in addition with severing portion 1, as the guide bracket 2a person that 81,83 of safe guiding elements are ended in lower cover 2, but become one in lower cover 2 and severing portion 1, or when omitting lower cover 2, also can take safe guiding element 81,83 directly axle only in the formations of severing portion 1.Simultaneously, though two embodiment all are to make safe guiding element 81,83 correspondences at the place of sidewall 3a and be provided with, its corresponding position is not so limited, can be according to along the extraction of dustbin 3 and establish a plurality of safe guiding elements 81,83, and more positively limit the distortion of sidewall 3a.But, as two embodiment, make it safe guiding element 81,83 o'clock to be set in the place of sidewall 3a correspondence, make stopper 7a can be positioned at the safe guiding element 81,83 of being provided with medially of sidewall 3a for desirable.Its reason ties up to the sidewall 3a of dustbin 3, in the middle of it easy deformation so.And stopper 81a system contact with the upper limb of sidewall 3a at least and get final product, certainly stopper 81a lengthening, makes it contact range with sidewall 3a and heals when big, prevents that the effect of sidewall 3a distortion from healing greatly.

So, in in order to each embodiment that finishes the 4th purpose, even the side at dustbin applies power, also can act on as the restriction portion of distortion because of the safety guiding element, so can prevent the big distortion of sidewall of dustbin, finger will can not enter the severing portion between dustbin and severing portion, so very safe.Simultaneously, according to making safe guiding element become middle recessed crank shape, put in the taking-up of each dustbin, the severing bits that accumulate in inside are flattened, so can eliminate the failure cause that severing bits stop up rotating blade etc., and can improve the efficient of accommodating at the severing bits of dustbin.

Claims (13)

1. the release mechanism of a shredder comprises: severing portion, and this severing portion has rotating blade in inside, externally has band paper and detects the paper input port of plate and positive turn-off pass, reversal switch, shutdown switch etc.; With the dustbin that is arranged on the pull-out type of side under this severing portion, it is characterized in that, be equipped with operating sheet with the rectangular side wall upper part of the pull-out direction of above-mentioned dustbin, aforesaid operations sheet operation is located at the actuator of the switch on the inboard of above-mentioned severing portion when above-mentioned dustbin is in the position of closing, with to above-mentioned rotating blade supply power.

2. the release mechanism of a shredder, it is characterized in that, operating sheet is equipped with on the top of face sidewall before above-mentioned dustbin, the position corresponding with the aforesaid operations sheet below above-mentioned severing portion is provided with the slit that the aforesaid operations sheet is passed through, with have the lower cover of the actuator of microswitch in this inboard, slit, the aforesaid operations sheet is operated above-mentioned actuator on the closed position of above-mentioned dustbin, with to the rotating blade supply power.

3. the release mechanism of shredder according to claim 2 is characterized in that, the aforesaid operations sheet is provided in a side of the handle top of dustbin.

4. the release mechanism of shredder according to claim 3 is characterized in that, the handle of above-mentioned dustbin makes and can freely load and unload from above-mentioned dustbin.

5. the release mechanism of shredder according to claim 1, it is characterized in that, in shutdown switch, often trend towards upward to the switchboard of roomy area be arranged on top board with severing portion roughly with one side on, this switchboard just below the optional position decline be set according to switchboard move so that the microswitch that rotating blade stops.

6. the release mechanism of a kind of shredder according to claim 1, it is characterized in that, in shutdown switch, on the support that the both sides middle body of the top board inboard of severing portion is provided with respectively, the front end of a pair of actuating strut that free rotation ground supporting, the switchboard more roomy than other switch areas is installed, this switchboard is supported by ground, the big flat spring of the width that is fixed on above-mentioned top board trend top, and the optional position under switchboard is provided with to descend according to switchboard and moves so that the microswitch that rotating blade stops simultaneously.

7. the release mechanism of a kind of shredder according to claim 1, it is characterized in that, in shutdown switch, face under the switchboard more roomy than other switch areas, establish spring so that can support switchboard up or down in many places via leading axle is upright, simultaneously switchboard just below the optional position be provided with according to the decline of switchboard and move so that the microswitch that rotating blade stops.

8. according to the release mechanism of claim 6 or 7 described shredders, it is characterized in that microswitch has a plurality of, can rotating blade be stopped according to the action of any microswitch wherein according to the OR logic.

9. the release mechanism of shredder according to claim 1; it is characterized in that; outstanding being arranged in the paper input port of paper inspection cardboard; but anchor at an end of the power transmission shaft of free rotary ground supporting in detecting the plate bearer bar simultaneously; make paper detect plate and starting bar can rotate linkedly at his the end set starting bar of this power transmission shaft; make the actuator of microswitch face starting bar end before; and the side raises projection to the circumferencial direction setting outside the switch cam that makes above-mentioned actuator action rotating with the rotating blade interlock; on the one hand; but be located at the moving plate front end of the starting bar stopper of body left frame; be provided with outstanding locking protrusion in the rotation field of above-mentioned starting bar; in the position that the projection retaining connects that raises of energy and aforementioned switches cam lateral surface, be provided with to remove and use projection simultaneously.

10. the release mechanism of shredder according to claim 9, it is characterized in that, but set up axis of rocking, the sheet that shakes that freely shakes is installed as axle at the front end of moving plate, be provided with the sliding surface of front in its lower end, and the back side is as the locking protrusion of locking surface as inclination.

11. the release mechanism of shredder according to claim 9 is characterized in that, but at the front end of moving plate, directly is provided with the front as the sliding surface of inclination and member is ended as the card of locking surface in the back side.

12. the release mechanism of shredder according to claim 1, it is characterized in that, corresponding to the upper limb at least of the sidewall of above-mentioned dustbin, in the position of the restriction bending to the inside of above-mentioned sidewall, the safe guiding element that will have a stopper the pull-out direction of above-mentioned dustbin freely to rotate axle end.

13. the release mechanism of shredder according to claim 12 is characterized in that, safe guiding element is that stopper is constituted crank shape with the coupling member frame linking mutually.

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