CN202185337U

CN202185337U - Paper feeding mechanism for paper shredder

Info

Publication number: CN202185337U
Application number: CN2011202822178U
Authority: CN
Inventors: 夏少华
Original assignee: CHINA FISHINGREEL TECHNOLOGY STANDARDIZATION (BEILUN HAIBO) RESEARCH CENTER
Current assignee: CHINA FISHINGREEL TECHNOLOGY STANDARDIZATION (BEILUN HAIBO) RESEARCH CENTER
Priority date: 2011-08-03
Filing date: 2011-08-03
Publication date: 2012-04-11
Anticipated expiration: 2021-08-03

Abstract

A paper feeding mechanism for a paper shredder is disclosed, and comprises paper feeding wheels, transmission wheels and a drive source that drives the transmission wheels to rotate. The paper feeding wheel is a plurality of discs with point in periphery which are sleeved respectively on a long shaft at intervals. The long shaft is installed on an overturning cover of the paper shredder. A protective plate below the paper feeding wheel is hinged on the overturning cover through a pivot. The protective plate is provided with windows corresponding to the feeding wheels. The pivot is sleeved with a torsional spring which makes the protective plate have a lower overturn and hidden the lower edges of the paper feeding wheels in the windows. In the state that the overturning cover is closed the lower edges of the paper feeding wheels are exposed in the windows. By skillfully arranging the protective plate, situation that the points on the paper feeding wheels harm human body when the overturning cover is opened is avoided; when the overturning cover is closed, normal work of the paper feeding wheels is ensured as well as a paper guide plate is introduced. In addition, the transmission wheels are installed on the long shaft through a unilateral bearing to prevent the situation that paper is reversely towed when the paper is blocked. Therefore, the paper feeding mechanism for a paper shredder provided by the utility model has the advantages of reasonable structure and safe use.

Description

The paper feeding structure of shredder

Technical field

The utility model relates to a kind of shredder, specifically refers to a kind of paper feeding structure of shredder.

Background technology

Shredder is a kind of office appliance that can various files promptly be pulverized.At present; Shredder has two kinds of manual shredder and automatic paper crushers; Because automatic paper crusher need not to let the user keep by shredder, can automatically paper cutting be entered into paper shredding cutters through paper-feeding passage, thereby can save user's time and applied gradually.The paper feeding structure of this automatic paper crusher includes feed roller and the driving mechanism that drives feed roller, driving mechanism usually with the shared same motor of feeding-in roll knife wheel set, number be the scheme disclosed in the CN2880252Y like the Chinese patent Granted publication.Also having through gear and the shredded paper roller group scheme of rotation synchronously, number is " but the shredder of automatic paper feeding " among the CN201659011U like the Chinese patent Granted publication.

In the automatic paper feeding process of above-mentioned shredder; Because the influence of factors such as paper type, paper quality and feed roller frictional force instability; Usually paper feed can occur and too much produce paper jam phenomenon,, often the control circuit of shredder is arranged to positive and negative rotation circuit in order in time to eliminate paperboard; Promptly let motor or motor reverse, reach the purpose of paper clearly with this.But, thereby cause feed roller also to reverse and the phenomenon of towing astern paper occurs because feed roller and the motor (or motor) of this moment link.Moreover; Traditional feed roller adopts the wheel of rubber or plastic material material; It is not bad that this feed roller is used on the new paper effect, but be used for dragging on the waste paper, owing on the waste paper various impurity such as dust, printing ink are arranged; These impurity are bonded at feed roller surface easily and make feed roller surface attachment one deck smooth layer, this smooth layer occur skidding when causing feed roller to drag paper or drag the ill phenomenon of paper.For this reason; People are designed to have on the circumference disk of sharp shaped material with feed roller, are the feed roller so just disclosing in the patent documentation of CN201659011U like above-mentioned Chinese patent Granted publication number, but because the existence of sharp shaped material; When exposed, hurt the people easily; Especially renovated last time when it is installed in, more needed safeguard measure, to guarantee user's safety.

The utility model content

The utility model first technical problem to be solved is the present situation to prior art, and a kind of paper feeding structure of shredder safe in utilization is provided.

The utility model second technical problem to be solved is the present situation to prior art, provides a kind of safe in utilization, and the paper feeding structure of the shredder that feed roller does not rotate under the clear paper state of motor counter-rotating.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of paper feeding structure of shredder; Comprise and coaxially be installed in feed roller and the drive on the major axis and drive the drive source that drive rotates; Wherein feed roller is the disk that a plurality of peripheries have sharp shaped material; And spacer sleeve is contained on the said major axis respectively, it is characterized in that: described major axis is installed in renovating of shredder, on this is renovated, through pivot knuckles the backplate that is positioned at below the feed roller is arranged; On said backplate, have and the corresponding window of each feed roller; On described pivot, be with simultaneously and described backplate had all the time turn over down and make the feed roller lower edge be hidden in the torsion spring of window, renovate under the state that closes said, the lower edge of each said feed roller is exposed to said window.

Further; For avoiding renovating under the open mode; The unexpected backplate that promotes, described renovating has the through hole that is adjacent to said backplate on the side, in this through hole stop pin is installed; Be positioned to be with on the inboard stop pin of through hole and this stop pin be recessed in innerly behind the through hole be positioned at the spring on the said backplate; On shredder, cover and have and the corresponding draw-in groove of above-mentioned stop pin, renovate under the state that closes said, the outer end of described pin rationed marketing snaps in the described draw-in groove and makes the inner of this stop pin break away from described backplate.Can stop backplate in the upset of renovating under the open mode through stop pin, and utilize draw-in groove, can renovate under the state that closes again, make the feed roller operate as normal, and the backplate of this moment can play the effect of protecting and leading cardboard again.

Be preferably; Described backplate both sides can also have outside lug boss; Have the groove that matches with this protuberance and on shredder, cover; Renovate in the process of closing when described, the bottom of described lug boss and this groove offsets and with making the lower edge of each said feed roller be exposed to said window after turning on the described backplate.Certainly, also can adopt other scheme, for example be provided with fore-set,, the lower edge of feed roller is exposed in the window, guarantee its normal paper feeding function through withstanding backplate last covering.

In above-mentioned scenarios, described drive can be installed on the described major axis through unilateral bearing.

Be preferably, first, second auxiliary bearing that is positioned at said unilateral bearing both sides can also be installed on the major axis between described drive and the major axis,, guarantee that unilateral bearing works better to play a supporting role.

As further improvement; Can also be provided with sleeve on the major axis in described first, second auxiliary bearing between one of them auxiliary bearing and the unilateral bearing; Reduce wearing and tearing each other so on the one hand; Make first, second auxiliary bearing to flush on the other hand, to play better supporting role with the left and right side of drive.

Compared with prior art, because the utility model is renovated when opening through backplate being set dexterously, making, the sharp shaped material on the feed roller is hidden on the backplate, can avoid the sharp shaped material wound on the feed roller to hit human body, plays a protective role; And, when guaranteeing the normal paper feeding of feed roller, also played the effect of lateral paper guide when renovating when closing.Moreover drive is installed on the major axis through unilateral bearing, can guarantee that when normal shredded paper drive is with the drive source normal rotation; Make each feed roller normally drag paper and reach the paper feeding purpose, and in case when paper jam phenomenon takes place, along with the counter-rotating of drive source; Under the effect of unilateral bearing; Drive idle running and do not drive major axis and rotate, and then make the feed roller also towing astern paper not of wheel of both not bothered to see me out, to meet the requirement of shredded paper.So the utlity model has advantage rational in infrastructure, safe in utilization.

Description of drawings

Fig. 1 for renovate among the utility model embodiment the structural representation that is in open mode (for the A-A among Fig. 2 to cutaway view);

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the stereogram of shredder loam cake among Fig. 1;

Fig. 4 renovates and parts stereogram mounted thereto among Fig. 1;

Fig. 5 is for removing the stereogram behind the backplate among Fig. 4;

Fig. 6 renovates the broken section structural representation that closes among Fig. 1;

Fig. 7 is that B-B among Fig. 6 is to cutaway view;

Fig. 8 is under Fig. 7 state, the schematic perspective view when lug boss on the backplate and the groove in the loam cake offset.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Extremely shown in Figure 8 like Fig. 1; This shredder has loam cake; On loam cake 1, be formed with the storage paper chamber 11 that supplies paper cutting to hold; Other on the left side in storage paper chamber 11 have manual feed passage a and an automatic paper feeding passage b that is connected mutually with storage paper chamber, and this manual feed passage a and the downward intersection of automatic paper feeding passage b are equipped with the paper shredding blade (not shown), also be hinged with on the loam cake 1 one can be covered with store up paper chamber 11 renovate 2.Paper feeding structure 3 in the present embodiment is installed in renovates on 2; It comprises and is installed in the major axis 31 renovating on 2 and be positioned at automatic paper feeding passage b paper feed port top, is installed in feed roller 32 and the drive 33 on the major axis and drives the drive source that drive rotates; Here, drive source is the motor (not shown), and wherein drive 33 is positioned at an end of major axis 31; See also Fig. 7; Drive 33 is to hold through one-way shaft 34 to be installed on the major axis, first auxiliary bearing 35, second auxiliary bearing 36 that are positioned at the unilateral bearing both sides also are installed on the major axis between drive and the major axis, and the major axis between first auxiliary bearing and the unilateral bearing is provided with sleeve 37.

Above-mentioned feed roller 32 is for to be contained in a plurality of laminar disk on the major axis 31 through fixed cover 38 spacer sleeves, and the periphery of each laminar disk has sharp shaped material.Adopt five feed rollers in the present embodiment; And be hinged with the backplate 4 that is positioned at below the feed roller 32 through pivot c renovating on 2, and on backplate 4, have and the corresponding window 41 in each feed roller position, on pivot c, be with torsion spring 5 simultaneously; This torsion spring makes backplate have the trend of turning over down all the time; And the feed roller lower edge is hidden in the window, and to renovate under the state of opening avoiding, the sharp shaped material on the feed roller is hindered and is hit health.

Consider and renovate 2 under open mode that the unexpected backplate 4 that promotes makes and turns over the pointed beyond the region of objective existence dew in back on the backplate 4.For fear of this phenomenon, have the through hole that is adjacent to backplate on 2 dual-sides renovating, stop pin 6 is installed in each through hole; Be positioned on the inboard stop pin of through hole and be with spring 7, this spring one end is against to be renovated on 2 the side inwall, and the other end is against the catch that is limited on the stop pin 6; Under nature, this spring 7 makes stop pin 6 be recessed in through hole, and the inner of stop pin 6 is positioned on the backplate 4; Renovating under 2 open modes like this, even promote backplate 4, because of stopping of stop pin 6 arranged; Backplate 4 can't turn on pivot, thereby the sharp shaped material of feed roller 32 can't be exposed in the corresponding window and guarantee user's safety.

In renovating the process of closing; In order to make finally ability operate as normal of feed roller, in the present embodiment, on the loam cake 1 of shredder, have and the corresponding draw-in groove 12 of above-mentioned stop pin; In renovating the process of closing; The outer end of pin rationed marketing 6 snaps in the corresponding draw-in groove 12, and this moment, spring 7 was compressed, and the inner of this stop pin 6 breaks away from backplate 4 simultaneously.Make backplate can upwards stir again.

To renovate under the state of closing in order being implemented in, to make the lower edge of turning over each feed roller of back on the backplate be exposed to window and the ability operate as normal, in the present embodiment, promote in the following manner to turn on the backplate; That is, have outside lug boss 42 in backplate 4 both sides, and on the loam cake 1 of shredder, have the groove 13 that matches with this protuberance, when renovating in the process of closing; Lug boss 42 offsets with the bottom of this groove 13, and is as shown in Figure 8, at this moment renovates to be rotated further; And backplate stopped operating because of stopping of groove, and at this moment, backplate promptly plays the effect of lateral paper guide; Simultaneously, the sharp shaped material of feed roller has been exposed in each corresponding window, and is as shown in Figure 6.

During use, starter motor drives drive and rotates; Drive drives major axis through unilateral bearing and rotates; Each feed roller is rotated, and the sharp shaped material of feed roller penetrates treating on the shredded paper of some, along with the rotation of feed roller; Paper cutting is sent in the automatic paper feeding passage in regular turn, reaches the purpose of automatic shredded paper.

When the paper shredding blade shredded paper was fast, paper was walked in tow, existed because of unilateral bearing is arranged, and had the effect of surmounting, and did not influence the paper feeding of feed roller.And make motor when counter-rotating in case paperboard takes place, and because of unilateral bearing is arranged, major axis does not rotate at this moment, and the i.e. not paper feeding of feed roller is towing astern paper not also, so the utility model more meets instructions for use.

Claims

1. the paper feeding structure of a shredder; Comprise and coaxially be installed in feed roller (32) and the drive (33) on the major axis (31) and drive the drive source that drive rotates; Wherein feed roller (32) has the disk of sharp shaped material for a plurality of peripheries; And spacer sleeve is contained on the said major axis respectively, it is characterized in that: described major axis (31) is installed in renovating on (2) of shredder, renovates (2) at this and upward is hinged with the backplate (4) that is positioned at feed roller (32) below through pivot (c); On said backplate, have and the corresponding window of each feed roller (41); On described pivot (c), be with simultaneously and described backplate (4) had all the time turn over down and make feed roller (32) lower edge be hidden in the torsion spring (5) of window (41), renovate under the state that closes said, the lower edge of each said feed roller (32) is exposed to said window (41).

2. the paper feeding structure of shredder according to claim 1; It is characterized in that: have the through hole that is adjacent to said backplate (4) on described renovating (2) side; Stop pin (6) is installed in this through hole; Be positioned at be with on the inboard stop pin of through hole make this stop pin be recessed in through hole after the inner be positioned at the spring (7) on the said backplate (4); On the loam cake (1) of shredder, have and the corresponding draw-in groove of above-mentioned stop pin (12), renovate under the state that closes said, the outer end of described pin rationed marketing (6) snaps in the described draw-in groove (12) and makes the inner of this stop pin (6) break away from described backplate (4).

3. the paper feeding structure of shredder according to claim 2; It is characterized in that: described backplate (4) both sides have outside lug boss (42); And on the loam cake (1) of shredder, have the groove (13) that matches with this protuberance; In described renovating (2) closed process, the bottom of described lug boss (42) and this groove (13) offseted and with making the lower edge of each said feed roller (32) be exposed to said window (41) after turning on the described backplate (4).

4. according to the paper feeding structure of claim 1 or 2 or 3 described shredders, it is characterized in that: described drive (33) is installed on the described major axis (31) through unilateral bearing (34).

5. the paper feeding structure of shredder according to claim 4 is characterized in that: first, second auxiliary bearing (35,36) that is positioned at said unilateral bearing both sides also is installed on the major axis between described drive and the major axis.

6. the paper feeding structure of shredder according to claim 5, it is characterized in that: the major axis in described first, second auxiliary bearing between one of them auxiliary bearing and the unilateral bearing is provided with sleeve (37).