DE212008000024U1 - Shredder with a safety device at the intake opening - Google Patents

Abstract

Shredder in which in the housing (10) an intake opening (1) for supplying sheet-like or similar material to the cutting unit (11) is provided, wherein the body towards the cutting unit (11) directed towards the intake opening (1) at an edge region a provided on the housing (10) adjacent storage surface (2) is provided, characterized in that at the feed opening (1) of the shredder on at least one storage surface 1 cover plate (2) a safety tilting plate or a safety cover (3) is articulated, wherein this safety tilting plate (3) is in operative connection with at least one switching unit (4; 12, 13; 14) which serves to interrupt the electrical power supply of the shredder (AV); preferred by temporary contact or non-contact.

Description

Technical area:

The The present invention relates to a shredder, also shredder for the Shredding of leaf-shaped Material called, in particular a shredder with a safety device at the intake opening, through which the leaf-shaped Material supplied to the cutting unit becomes.

State of the art:

at Shredders are office equipment. In the course of the reduction and lowering the price level of these devices, their increased use in small offices and more and more in home offices is used, the shredders have also found their way into the households and are increasingly being used there.

In private households, however, have the option of having small ones there Children live. Because the fingers of young children are very thin / narrow / slim There may be cuts, if the fingers of the unintentionally in the feed opening / feed opening of the small children Advised shredder. This can be up to the worst case Separation of the finger lead. For this reason, conventional Shredder in this regard a potential danger.

problem

The The object of the present invention is to provide a shredder with security device, which the above-mentioned Deficiencies of the current state technology overcomes.

solution the problem

at the document shredder according to the invention, with a safety device at the intake opening with the characteristics of Claim 1, it is possible that in case of unintentional delivery of a human finger into the feed opening / paper feed opening of the Shredder interrupted the electrical power supply of the shredder becomes and thus a violation by the shredder can be prevented. The subordinate claims 2 to 9 disclose preferred variants the invention.

For realization, according to the invention, the following technical concept and variants are provided:
At the feed opening of the document shredder, ie at the paper feed opening of the shredder, a safety tilting plate (safety cover), connected to a hinge connection, is arranged on at least one edge region of a depositing surface, for example a cover plate provided substantially in front of the transition region from the depositing surface to the intake opening the above-mentioned safety tilt plate with at least one safety switch, which serves to interrupt the electrical power supply of the shredder, is operatively connected by means of contact. This safety tilt plate is located above the inlet opening of the feed opening of the shredder.

The The above-mentioned safety tilt plate preferably forms its bottom a bulge, the above-mentioned, preferably pen-shaped Bulge by the at the cover plate of the shredder provided passage opening with the push-button of the provided within the shredder Safety switch, which is preferably a micro-switch, by means of Contact communicates.

at The above-mentioned safety switch is according to a further embodiment around a non-contact induction switch and on the safety tilt plate becomes an induction body provided, which by contact with the above-designated Safety switch is connected. At the above-mentioned, preferably pen-shaped Bulge is provided a repositioning spring.

at of the present invention is attached to said cover plate, in its to the paper feed opening the Shredder directed edge area the safety tilt plate connected on one side with a hinge connection, this safety plate in a provided in said edge region of the cover plate Lowering is arranged so that the upper surface of the safety tilt plate essentially with the top surface of the cover plate a common, deserted area form, flat or curved can be. The other, free edge of the safety tilt plate is designed so that the upper surface at a small distance the beginning of one of the fixed channel walls of the intake port connects.

Under normal circumstances presses the pencil-shaped Do not bulge the bottom of the safety tilt plate on the push button switch of the safety switch and the safety switch is located in open condition. The electrical power of the shredder is normal and the shredder is in normal operating condition.

It It goes without saying that on the safety tilt plate a repositioning spring or another object provided can be. The spring force of the spring raises the safety tilt plate until it is in a resting position, leaving the safety tilt plate in normal operating condition has no contact with the safety switch.

respectively an object is provided on the safety tilt plate so that The safety tilt plate can lift automatically.

If a human finger very close to the paper feed opening of the Shredder device, so this finger will be first hit the safety tilt plate and the safety tilt plate is rotated around its hinge axis upon receipt of pressure. This causes, that after crossing a limit the bulge on the push-button of the safety switch presses and a contact between the bulge and pushbutton of the safety switch will be produced. The safety switch is triggered in this way and interrupts immediately the electric power supply of the shredder. The operation the shredder is set. This will prevent that the paper shredder located inside the shredder can hurt the finger.

Because inside the safety switch normally a spring respectively another object is provided for repositioning, learns the Safety platen after removal of the finger from the paper feed opening no pressure more and consequently pushes Also, the safety tilt plate is no longer on the push button of the Safety switch. The push-button of the safety switch is automatically raised and the electrical power of the Shredder is restored. The shredder takes in this way his regular Operation again.

It is also according to a further embodiment possible, that on a safety tilt plate several safety switches be provided. The above-mentioned safety switch can be in contact execution or in non-contact version be designed. It is only necessary that when printing on the safety tilt plate of the relevant safety switch is triggered and the objective of interrupting the electrical power supply shredder.

In summary let yourself say that the structural design of the present invention is simple is.

Of the inventive object is safe and reliable. By interrupting the electrical power supply when too close approach a finger to the paper feed opening of the shredder appropriate injuries are avoided.

The The invention will be described below with reference to schematic drawings illustrated embodiments closer and closer explained in details.

It demonstrate:

1 a top view of the new shredder;

2 a side view of the in 1 shown document shredder along the section line AA;

3 the detail B in 2 in enlarged partial view;

4 a sectional view according to 2 with an actuated safety tilt plate;

5 the detail C in 4 in an enlarged partial view;

6 a further embodiment of the shredder after 1 ;

7 the detail A in 6 in enlarged partial view;

8th the variant of the document shredder after 6 with activated safety device;

9 the detail D in 8th in enlarged partial view;

10 a further embodiment of the in 1 new shredder shown in section along section line AA;

11 the detail E in 10 in an enlarged partial view;

12 the further embodiment of the new document shredder 10 with activated safety device;
and

13 the detail F in 12 in an enlarged partial view.

In the 1 to 5 the new document shredder is shown with a safety device at its intake opening in a first embodiment. In the case 10 the shredder "AV" are the usual components such as drive unit, gear unit, control unit and the cutting unit provided in the 1 to 13 The present application was not further highlighted or marked. The same applies to operating and actuating elements that the housing 10 partly pass through or are arranged on selbigem.

The top view of the new shredder behind 1 shows this on or in the surface of the housing 10 shredder "AV" a shelf 2 is provided, which is sometimes called in the relevant professional circles and cover plate. A border area / section of the shelf 2 adjoins the upper opening of a feed opening 1 at. The intake opening 1 , please refer 3 , Is essentially by the spaced apart and generally parallel to each other arranged channel walls 1a and 1b educated. The area between these channel walls 1a and 1b has a channel width in the objects described in the application 1c that is unchangeable. As a rule, the channel walls 1a and 1b each laterally interconnected by narrow walls, whereby a defined paper feed opening is formed. The outlet opening of the channel-like intake opening 1 is located above the cutting unit 11 shredder "AV"; this 11 is in the 2 shown symbolically with two dashed circles.

In the to the intake 1 adjacent border near area of the shelf 2 is a lowering according to the invention 15 provided, whereby on the shelf 2 a lowered section 2a is formed. This lowering 15 is now in a new special design by a safety tilt plate 3 filled in, quasi again essentially closed. The safety tilt plate 3 is along its one edge and there at least in sections on a connecting axis / hinge axis 9 articulated movable. The free end of the safety tilt plate 3 ends substantially in alignment with the one channel wall 1b the intake opening. The safety tilt plate 3 is above the inlet opening of the intake opening 1 arranged.

The above-mentioned safety tilt plate 3 is by contact with a switching unit, a safety switch 4 connected, which is used for the interruption of the electrical power supply of the drive of the shredder.

The said safety tilt plate 3 forms at its bottom a preferably pin-shaped bulge 5 , this bulge 5 through one on the section 2a the cover plate 2 provided passage opening 6 through with a push-button 7 within the shredder housing 10 provided safety switch 4 is in operative contact. This safety switch 4 is connected to the control circuit of shredder "AV".

When the safety switch 4 is triggered / disconnected, there is an interruption of the electric power supply of the shredder and the operation of the shredder is set.

At the above-mentioned bulge 5 is a repositioning unit, preferably a spring 8th intended. Under normal circumstances, the spring force of the spring increases 8th the safety tilt plate 3 so that the pen-shaped bulge 5 not on the push button 7 of the safety switch 4 pushes and the safety switch 4 therefore in open condition. The electrical power supply of the shredder is thus normal. It is natural that without external pressure on the safety tilt plate 3 the stop of the safety tilt plate 3 solely by the at the lowered portion 2a supporting spring 8th is given so that the key switch 7 of the safety switch 4 is free and the safety switch 4 in this way in the open state.

If now a human finger - especially the finger of a small child (the fingers of small children are particularly thin and can easily into the paper feed opening 1 the document shredder "AV" advised) - to the intake opening 1 of the shredder "AV" advised, so this finger is first on the front of the same safety plate 3 meet and the safety tilt plate 3 becomes after receipt of a pressure with its free end around its joint axis 9 panned down. This causes, when a predetermined limit (a distance traveled or a rotation angle), that the pin-shaped bulge 5 on the push button 7 of the safety switch 4 pushes and a contact between bulge 5 and push button 7 of the safety switch 4 will be produced. The safety switch 4 is triggered in this way and the safety switch 4 immediately interrupts the electrical power supply at least the drive of the shredder. The operation of the shredder is discontinued. In this way it is prevented that the shredding unit located inside the shredder can injure the finger.

Of course it can be at the safety switch 4 also be a non-contact type. For example, infrared induction switches, light induction switches, etc. can be used.

For example, according to a modification to the safety tilting plate 3 one by contact with the safety switch 4 Connected Indukti provided onskörper. This induction body is the medium for the reflection of the safety switch 4 sent signals.

Under normal circumstances, the on safety tilt plate 3 provided repositioning spring 8th or the safety tilt plate 3 provided other object no contact with the safety switch 4 , The safety switch 4 is in this way in the open state and the shredder can be operated regularly.

If now, as already mentioned, a human finger to the paper feed opening 1 of the document shredder device, this finger is first placed on the safety tilting plate 3 meet and the safety tilt plate 3 becomes after receipt of the pressure around its joint axis 9 turned.

If the safety tilt plate 3 is rotated to a predetermined angle, the safety switch occurs 4 with the induction body of the safety tilt plate 3 in contact or from the safety switch 4 sent signals can be reflected by the induction body. The safety switch 4 receives the signals and triggers and interrupts the shredder's electrical power supply. The operation of the shredder is discontinued. In this way, even with this modification of the invention prevents the located inside the shredder dangerous parts can injure the / the fingers.

Another embodiment of the invention is in the 6 to 9 shown. The intake opening 1 The document shredder "AV" also consists of two channel walls 1a and 1b whose channel width 1c also has a predetermined, fixed amount. Through this access opening 1 The shredded, leaf-shaped objects in the device "AV" down to the cutting unit 11 guided and then by selbigem 11 moved in. The next to the intake opening 1 arranged storage area 2 has here in the near-edge area in a subsidence 15 the shelf 2 arranged safety tilt plate 3 , This safety tilt plate 3 is also on a hinge, a joint axis 9 movably mounted. In this version, the one at the bottom of the safety cover 3 shortened pen-shaped protrusion, so a pen 5 ' is formed. To this pen 5 ' is the spring here too 8th stored at the lowered section 2a the shelf / cover plate 2 supported and after pressing the safety cover 3 the same in its rest position, see 6 and 7 , leads back and holds there - in another embodiment is the spring 8th preferably sideways of the shortened pin 5 ' attached, see here 7 or 9 , In this further embodiment is at the lowered portion 2a the shelf 2 in the area of the passage opening already mentioned for the first embodiment variant 6 a switch sensor is provided, which is electrically connected in the circuit of the document shredder "AV".

Will the safety cover 3 (partly also called safety tilt plate) lowered by actuation, the release takes place by the contact between the pin 5 ' of the safety cover 3 arranged contact and the sensor. The safety cover 3 triggers by the contact the switching sensor for switching on and off and thus causes that in the circuit of the document shredder "AV", the power supply of the device / drive is turned off.

The mentioned switching sensor consists of a few copper guide plates, one of which 13 located at the bottom of the safety cover 3 , at the pin 5 ' , is located, and the other 12 on the surface of the shelf 2a as mentioned before. The two copper baffles 12 and 13 form the switch and are electrically connected each in the circuit of the document shredder "AV". Will the safety cover 3 Depending on the version, partially or completely depressed - s. 8th and 9 -, The circuit is effected by the contact of the two conductive plates 12 and 13 ,

Following is briefly discussed on the operation of this embodiment.

Normally there is the safety cover 3 because of the spring 8th at a distance to the shelf 2a , The Kufper guide plates 12 . 13 are separated from each other. In this case, the paper shredder "AV" operates, if a switch-on sensor or switch-on button was pressed. Before finger in the intake opening 1 between the canal walls 1a and 1b the intake opening, can pass, especially children's fingers, the security cover 3 touched because of pressure around its connection axis 9 rotates. Will the safety cover 3 Pressed beyond a set limit (one way or one rotation angle), the contact between the copper baffles is created 12 and 13 , As a result, the deactivation of the power supply of the drive of the device and thus the operation of the device is stopped. This avoids the risk of injury.

Of course, said switching sensor may be a contact switch. The triggering takes place through the contact between the button 12 of the contact switch and the 13 safety cover 3 , Will the safety cover 3 Depressed, this activates the button 12 with the result that at least the power supply to the drive of the paper shredder "AV" is stopped.

In another further application example of the invention, which in the 10 to 13 is shown schematically, is in front of the intake opening 1 also a safety cover / safety tilt plate 3 ' provided, which is also here about a connection axis 9 is pivotally mounted. At the bottom of the hinge 3 is also a feather here 8th provided at the lowered section 2a the shelf 2 supports and the safety cover 3 ' keeps in its resting position. At the shelf 2 there is a switching sensor. The described switching sensor is electrically connected in the circuit of the document shredder "AV". As described above, the switching sensor can also be formed by a light barrier (transmitter and receiver); this is in the 10 . 11 . 12 and 13 shown schematically in the form of a circle 14 , Transmitter and receiver are located on the side of the safety cover 3 ' , Normally there is the safety cover 3 ' because of the spring 8th at a distance from the lowered section 2a the shelf 2 so that the light signal is uninterrupted. Will the safety cover 3 ' depressed, this preferably covers with an existing on selbigem panel 3a the light signal, so that the light signal is interrupted, whereby the document shredder "AV", ie its drive, is put out of operation. At that moment, a control signal for shutting down the device goes out of the light barrier, the document shredder "AV" stops the cutting process, if it is running. Of course, said switching sensor may also be another contactless sensor switch, for example an infrared sensor switch or an electromagnetic sensor switch, etc. The circuit is also effected here by the change in position of the safety cover arranged above the inlet of the intake opening 3 ' , If this is actuated, the signal reception of such sensors is thereby masked and the sensor generates a switching pulse.

Or, the safety cover 3 ' or its aperture 3a reflects the signals from such contactless sensor switches so that the sensor receives signals.

In these cases, the contactless sensor switch is set active or inactive respectively. Finally, stopping the power supply of the shredder "AV" drive will cause a possible injury to the hands / fingers through the cutting unit 11 to avoid.

The Although several features are identified above Embodiments, however, other embodiments are also possible within the meaning of the invention possible; the described embodiments are not a restriction. The person skilled in the art can make numerous other modifications and embodiments conceive, which in the context and spirit of the principles of the invention fall.

For example, the invention is also realized when the lowering 15 in the storage area 2 is formed only channel-like in the near-edge area. In this embodiment could then z. B. the upper portion, the input portion of the facing channel wall 1b , web-shaped next to the pivotable free end of the safety skid plate 3 stand. Thus, the upper body edge or surface of this web could also be curved or have a chamfer.

1

Feed opening / paper feed opening

1a, 1b

channel walls

1c

channel width

2

Shelf / cover plate

2a

lowered portion of Pos. 2

3, 3 '

Sicherhheitskippplatte / safety lid

3a

cover

4

safety switch

5

bulge (Pin-shaped)

5 '

shortened bulge (Pin-shaped)

6

Through opening in Pos. 2a

7

Push switch

8th

Pen / Repositionierungseinheit

9

Connecting axis / joint axis

10

casing

11

cutting

12 13

Contact, Switch sensor, copper guide plates

14

photocell

15

lowering

AV

paper shredder

A

Detail in 6

B

Detail in 2

C

Detail in 4

D

Detail in 8th

e

Detail in 10

F

Detail in 12

Claims (9)

Shredder, in which in its housing ( 10 ) an intake opening ( 1 ) for feeding sheet-like or similar material to its cutting unit ( 11 ) is provided, with the body to the cutting unit ( 11 ) directed intake opening ( 1 ) at an edge region of a housing ( 10 ) provided adjacent storage area ( 2 ) is provided, characterized in that at the intake opening ( 1 ) of the shredder on at least one shelf 1 Cover plate ( 2 ) a safety tilting plate or a safety cover ( 3 ) is hinged, this safety tilting plate ( 3 ) with at least one switching unit ( 4 ; 12 . 13 ; 14 ), which interrupt the electric shredder (AV) power supply, is in operative connection; preferred by temporary contact or non-contact. Shredder according to claim 1, characterized in that the safety tilting plate ( 3 ) at its bottom a bulge ( 5 ), this bulge ( 5 ) by the on the cover plate ( 2 ) of the document shredder (AV) provided through opening ( 6 ) through with a push button switch ( 7 ) a switching unit provided within the document shredder (AV), a safety switch ( 4 ) is temporarily in contact; preferred is the safety switch ( 4 ) a micro-switch. Shredder according to claim 2, characterized in that the safety switch ( 4 ) is a non-contact induction switch and that on the safety tilt plate ( 3 ) an induction body is provided, which by contact with the safety switch ( 4 ) is temporarily operatively connected. Shredder according to claim 1, 2 or 3, characterized in that on the safety tilting plate ( 3 ) a repositioning unit, preferably a spring ( 8th ) is arranged. Shredder according to claim 4, characterized in that the spring ( 8th ) concentric with the bulge ( 5 ; 5 ' ) is arranged. Shredder according to claim 1 or 1 and 4, characterized in that the switching unit is operatively connected to the control of the circuit of the file shredder contact sensor unit, wherein one of the contact elements of the contact sensor unit on the safety tilt plate ( 3 ) is arranged. Shredder according to claim 6, characterized in that the contact elements of the switching contact sensor unit are a pair of copper guide plates, one of which ( 13 ) on the underside of the safety tilt plate ( 3 ) and the other copper guide plate ( 12 ) on the surface of the shelf ( 2 . 2a ) are arranged. Shredder according to claim 1 or according to claim 1 or 4, characterized in that the switching unit is a switching sensor in the form of a light barrier, wherein the components transmitter and receiver of the light barrier on the storage surface ( 2 ), substantially sideward of the pivotable safety tilt plate ( 3 ) are arranged. Shredder according to at least one of claims 1 to 8, characterized in that the safety tilting plate ( 3 ) above the inlet opening of the intake opening ( 1 ) is arranged.