WO2003043834A1

WO2003043834A1 - Fastening element, method for binding a plurality of sheets with fastening element, and device for binding a plurality of sheets with the same

Info

Publication number: WO2003043834A1
Application number: PCT/PL2002/000093
Authority: WO
Inventors: Aleksander Macha; Krystian Nawrat
Original assignee: Opus Sp. Z O.O.
Priority date: 2001-11-22
Filing date: 2002-11-21
Publication date: 2003-05-30
Also published as: EP1456037B9; UA76255C2; AU2002366109A1; RU2301744C2; NO20042468L; PL193931B1; ES2254789T3; EP1456037A1; NO327524B1; WO2003043834B1; EP1456037B1; RU2004118711A; PL350812A1; DE60208077D1; DE60208077T2; ATE312724T1

Abstract

A fastening element for binding a plurality of sheets, which constitutes a channel, one vertical side wall (1) of which is bended in its upper part at an angle approaching the right angle, constituting over a whole length of this wall a crosspiece (2) with a width which is significantly less than the dimensions of the remaining walls, and to the horizontal base (3) and/or the vertical side wall (1) and/or (4) there are secured stops (11) in an inappreciable distance from the both ends of the fastening element, wherein the second vertical side (4) has a height greater than that of the side wall (1). A method for binding a plurality of sheets with a fastening element, comprising placing the sheets to be bound into this element in such a way that their edges intended to be bound rest on the plane base, and it is exclusively the second vertical side wall (4) which is deformed such that it is brought closer to the vertical side wall (1). A device for binding a plurality of sheets with a fastening element is provided with a fixed bed (5) with a L-shaped cross section as well as a deforming element (7) which may move over a lower part of the fixed bed (5).

Description

OZ / P- 3836

Fastening element, method for binding a plurality of sheets with fastening element, and device for binding a plurality of sheets with the same

The present invention relates to a fastening element, a method for binding a plurality of sheets with a fastening element, and a device for binding a plurality of sheets with the same.

It is known fastening elements which serve to bind a plurality of sheets and which appear at most in the form of a U-shaped channel element which is used alone or inserted into the cover. When the sheets are inserted into this element it is mechanically bended on both sides while maintaining the sheets inside the fastening element.

Inconveniences of using known fastening elements and an associated method for binding are as follows: not very reliable fastening of the sheets to be bound, as they are often held by two smooth surfaces only which are brought closer to each other while bending the fastening element, and while transporting the sheets to be bound in a vertical position they tend to displace in the fastening element, unsatisfactory aesthetics of a cover ridge, as on both sides of the cover ridge there are formed irregular hollows which are traces of interaction of deforming elements. As a consequence, repeatability of a cover shape is lacking, and any copy obtained differs in appearance from the other.

The known devices for binding a plurality of sheets with known fastening elements have most often a pair of jaws which deform both sides of a fastening element when a certain force is applied.

The object of the present invention is to provide a construction of a fastening element, a method for binding, and a device, due to which reliably fastening the sheets to be bound may be obtained, and at the same time an improvement of aesthetics of a cover and a repeatability of a shape of any copy may be provided, with a binding method and a device used to this end make it possible to simplify technical means used.

According to the invention this object is achieved by means of a channel-shaped fastening element, one vertical side wall of which is bended in its upper part at an angle close to the right angle to constitute over a length of this wall a crosspiece with a width which is significantly less than dimensions of the remaining walls of the fastening element. The fastening element is provided with stops secured to a horizontal base and/or vertical side wall or both vertical side walls in an inappreciable distance from the both ends of the fastening element. Preferably, the vertical side wall has a height greater than that of the first side wall.

A method for binding a plurality of sheets with a fastening element comprises placing the sheets to be bound nto the fastening element in such a way that their edges intended for a cover rest on a plane base, and only the second side wall is subject to deformation to be brought closer to the crosspiece.

A device for binding a plurality of sheets with a fastening element is provided with a fixed L-shaped bed as well ' as a deforming element which may move over a lower part of the fixed bed. Preferably, the fixed bed is situated obliquely to the base. The deforming element has on the opposite face side of a deforming edge a sloping edge and between a driving element and the deforming element there is provided a wedge-shaped intermediate element .

It is the use of the fastening element that a reliability of fixing the sheets to be bound is achieved, which is obtained by the pressure of the second vertical side wall against the crosspiece. The crosspiece obtained by bending an upper part of the first vertical side wall prevents the deformation of this wall. As a consequence, one non-deformed side is obtained which is a front of the cover and has a shape repeatable in any copy to be bound, with no traces of interaction of a deforming force. The stops prevent to displace the bound sheets in the cover. It is the inventive method for binding that a possibility for simplifying a construction of a device for binding is achieved as it is indispensable nothing but only one set of moving elements which serve to deform one vertical side wall of the fastening element. The wall of the fastening element, which is not deformed, is supported by the fixed oed of smooth surface and maintains its shape .

The inventive fastening element, method for binding a plurality of sheets with this element, and device for binding a plurality of sheets with the fastening element will' become clear from the detailed description with reference to the appended drawing, in which: Fig. 1 is a cross-sectional view showing the exemplary fastening element,

Fig. 2 is a cross-sectional view of the fastening element after deformation of the wall during the operation of binding a plurality of sheets,

Fig. 3 is a view of a section of the exemplary fastening element,

Fig. 4 is a view of the exemplary device for binding a plurality of sheets with the fastening element, with a packet of sheets placed in the fastening element, and Fig. 5 and 6 are a view of sections of the exemplary fastening elements.

The fastening element according to the invention is in the form of a channel, one vertical side wall 1_ of which is bended in its upper part at an angle approaching the right angle to form over the whole length of this wall a crosspiece 2 with a width which is significantly less than dimensions of the remaining walls of the element. The horizontal base 3 of the element passes through mild roundings into the side walls. The width of the base 3_ depends on thickness of the packet of sheets intended to be bound. The fastening element is provided with stops 11. secured to the horizontal base 3_ and/or the vertical side wall 1 and/or 4_ in an inappreciable distance from the both ends of the fastening elements, which prevent the displacement of the bound sheets inside the cover. Preferably, the second vertical side wall 4_ has a height which is greater than that of the first vertical side wall 1.

The device according to the invention has in an exemplary embodiment a fixed bed 5 with a L-shaped cross section, which width is adjusted to the dimensions of the packet of sheets to be bound. Preferably, the bed 5 is situated obliquely to the horizontal base 6 in such a way that this part of the cover of the sheet packet placed in the fastening element, which will not be deformed, rests supported by the longer arm of the „L", and the horizontal base 3 of the fastening element rests on the shorter arm of „L". In such a way, the sheets subject to binding rest under influence of their weight on the longer arm of „ " of the bed 5 and do not require additional supporting. The deforming element 1_ is provided on the opposite side of the deforming edge with an oblique edge 8_ intended to cooperate with a wedge-shaped intermediate element 9 which transfers a force indispensable to deform the wall 4 of the fastening element and derived from the driving element 10. Cooperation of the driving element _10, intermediate element 9, and deforming element 1_ prevents an excessive force to be exerted on the wall 4_ by changing the direction of action of a part of deforming force towards the displacement of the intermediate element 9 along the oblique edge 8 of the deforming element 7_-

To bind a plurality of sheets they are inserted into the fastening element in such a way that their edges intended to be bound rest on the horizontal base 3, the fastening element, alone or fixed in the cover, is placed on the bed 5, such that the first vertical side wall 1_ of the fastening element be stably supported by a smooth wall of the bed 5, and on the opposite side the deforming element 1_ is displaced to the second vertical side wall 4_ while applying a force to the movable driving element 10.

Claims

1. A fastening element for binding a plurality of sheets, characterised in that it constitutes a channel, one vertical side wall (1_) of which is bended in its upper part at an angle approchmg the right angle, constituting over a whole length of this wall a crosspiece (2) with a width which is significantly less than dimensions of the remaining walls, and to the horizontal base (3_) and/or vertical side wall (1.) and/or (_4) there are secured stops (3J m an inappreciable distance from the both ends of the fastening element.

2. A fastening element as claimed in claim 1, characterised in that the second vertical side wall (4_) has a height greater than that of the side wall (1_) .

3. A method for binding a plurality sheets with a fastening element, comprising placing the sheets to be bound in this element in such a way that their edges intended to be bound rest on a plane base, characterised in that it is the second vertical side wall (4_) which is exclusively subject to deformation such that it is brought closer to the vertical side wall (1_) .

4. A device for binding a plurality of sheets with a fastening element, characterised in that it is provided with a fixed bed (5) with a L-shaped cross section and a deforming element (7_) which may move over a lower part of the fixed bed (5) .

5. Device as claimed in claim 4, characterised in that the fixed bed is situated obliquely to the base (6) .

6. A device as claimed in claims 4 and 5, characterised m that the deforming element ( ) has on the opposite face side of the deforming edge an oblique edge (8_) and between the element transferring a deforming force (1_0) and the deforming element (_7_) it is provided with a wedge-shaped intermediate element (9) .