CA2053884A1 - Large area washer - Google Patents
Large area washerInfo
- Publication number
- CA2053884A1 CA2053884A1 CA002053884A CA2053884A CA2053884A1 CA 2053884 A1 CA2053884 A1 CA 2053884A1 CA 002053884 A CA002053884 A CA 002053884A CA 2053884 A CA2053884 A CA 2053884A CA 2053884 A1 CA2053884 A1 CA 2053884A1
- Authority
- CA
- Canada
- Prior art keywords
- peripheral border
- washer
- sections
- fact
- offset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 76
- 230000007704 transition Effects 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims description 21
- 230000001154 acute effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 9
- 230000002787 reinforcement Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
- E04D5/14—Fastening means therefor
- E04D5/144—Mechanical fastening means
- E04D5/145—Discrete fastening means, e.g. discs or clips
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/3601—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer
- E04D3/3603—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer the fastening means being screws or nails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B2043/008—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with a cavity for receiving the bolt head in order to make a flush surface
Abstract
ABSTRACT OF THE DISCLOSURE:
A large area washer with a perforation (2) through which a fastener passes has a peripheral border (4) which forms the peripheral limit (3) and which is constructed from one or more longitudinal steps or curves.
Individual sections (6) of the peripheral border (4) are set back in the longitudinal direction of the latter from the sections (5) in a plane parallel to, and at a distance from, said sections. the transitions (7) between the mutually offset sections (5,6) of the peripheral border (4) are curved or sharp-angled. This type of washer can be made of relatively thin-walled material but is nevertheless suitable for use in unmatching devices.
A large area washer with a perforation (2) through which a fastener passes has a peripheral border (4) which forms the peripheral limit (3) and which is constructed from one or more longitudinal steps or curves.
Individual sections (6) of the peripheral border (4) are set back in the longitudinal direction of the latter from the sections (5) in a plane parallel to, and at a distance from, said sections. the transitions (7) between the mutually offset sections (5,6) of the peripheral border (4) are curved or sharp-angled. This type of washer can be made of relatively thin-walled material but is nevertheless suitable for use in unmatching devices.
Description
2C5~S~4 The invention concerns a large area washer with a central area that is provided with a perforation opening as a receptacle for a fastener and with an outer peripheral border with offset sections to simplify the separation from a stack.
Such washers are primarily used for the attachment of single or multilayered roofing sheets andlor insulation strips onto a solid substructure. If these washers are retained in the magazine of a screw device and have to be separated for the actual screwing process, it is necessary that the washers have a certain thicknes6 in order to ensure trouble-free operation~. It was thus far often necessary to manufacture the washers from a corre6pondingly thick material in order to separate them, although a thinner material would have provided 6ufficient stability for the attachment.
One known circular large area washer (DE-B-1269840~ is provided with sections of successive ribs that are arranged coaxially to the central perforation opening and have a distance from 6ame. The stacking height of the successively layered wa6her~ results from their total thickness, which in turn is compiled of their wall thicknes6 and the ribs.
Furthermore, a wa6her that extends wave-shaped in its peripheral direction (Japanese Patent No. A Sho 63tl988]-33503) i~ known which i6 constructed in the shape of a ring with a large central perforation opening. These washers can be stacked on top of each other, but a separation transverse to the center axis of the central perforation $8 not possible because the height of the waves amount6 to several times the wall thickness of the wa~hers.
Another known large area wa6her (US-A-4890968) is provided with ribs that extend radially from the inside towards the out6ide between the outer peripheral border and the central perforation opening for the fastener in addition to the ribs extending around the peripheral border, in which several washers can be 6tacked on top of each other. The ribs on the washers ensure that the peripheral border6 of the washers that are stacked on top of each other have a correspondingly large distance from each other, in order to ensure that the slider of the separation device only takes hold of the lowermost washer of the stack. During the stacking of these washers, an enormous 6tacking height results with even a small number of washers because the thickness of each washer in the stack represents several time6 the material thickness of the washers.
This invention i~ based on the ob~ective to construct a wa6her in 6uch a way that it can be u6ed in the corresponding separation device6, even if thinner material6 are used, and that a redu¢tion of the 6tacking height is obtained.
According to the invention, it is suggested that the outer peripheral border of the washer, 6een in its longitudinal direction, is off6et in several sections that have one or more step or curve 6hapes, and that the transitions between the mutually off6et sections of the peripheral border are curved or ~harp-angled.
According to the invention, this measure obtains the advantage that the peripheral border of the washer provides a wider contact ~urface for the separation device during the ~eparation within the magazine, in which the same 6tacking height can be obtained as with washers of correspondingly thicker material, in particular at the transitions between the mutually offset sections of the peripheral border.
The transitions between the mutually offset sections of the peripheral border are either curved or sharp-angled. These transitions represent a particularly beneficial factor in the separation of the wa6hers, because this area provides a contact surface for the separation device over the entire height of the peripheral border of the washer.
In addition to this, these sections of the peripheral border which are offset in one or more ~tep or curve shapes contribute to a further reinforcement of the washer.
It i8 thus pos6ible to select a considerably thinne~ raw material for the manufacturing of large area washers, while a perfect separation within the magazine is ensured.
The invention furthermore leads to a considerable reduction in weight and space, because the number of units in an equally high stack of washers can be considerably increased. In regard to constructive considerations, it can be advantageous if the ~ingle 6ections of the peripheral border6, seen in longitudinal direction of same, extend in a plane parallel to, and at a di6tance from, these 6ection6. Thi6 provides the advantage that the off~et eections adjoin the ba6e of the FeparatiOn device with their ~ntire surface, while the sections of the peripheral border that lie in the principal plane form the upper limitation of the total thic~ne6s of the peripheral border.
According to another example, it is also possible that the sections which are off6et against the cections of the peripheral border that lie in the principal plane, seen in longitudinal 2~ 34 direction of the peripheral border, extend in the ~hape of a ~urve. This fact provides the po~sibility of a point- or line-shaped attachment of the washer to a solid substructure, in which all off6et section6 are supported equally.
It is furthermore advantageous, if the areas of the peripheral border that extend parallel and oppose each other represent a mirror image arrangement with equally offset sections. This fact is particularly advantageous if the washers are intended to be stacked on top of each other in the same manner, but in different positions. If the stack of square washer6 is viewed from the top, it does not matter how the~
washers are stacked on top of each other.
According to the invention, it is particularly advantageous if the peripheral border is provided with at least one offset 6ection on at least two opposing areas of the washer. This fact not only ensures an orderly support of the correspondingly lowest wa6her, but also neces6itates only a relatively simple tool.
The 6pecial construction of the transitions between the mutually offset section6 i6 particularly advantageous in regard to a 6implified manufacturing proces6, as well as the realization of a trouble-free 6eparation process. It i5 thus advantageous, if the tran~itions are constructed in such a way that they extend in a rlght angle or an acute angle to the longitudinal direction of the peripheral border. The two transitions between one offset ~ection and the two ad~acent sections that lie in the principal plane of the peripheral border can extend parallel to each other or form an acute angle with each other.
., ,. , ,: , .
Z~53S~4 In a polygonal arrangement of the washer with preferably rounded corner areas, one offset section each is pro~ided on the peripheral border in the center of each side limitation. This fact provides another simple stacking possibility for the washers to be inserted into the magazine, since the stacking of the washers does not depend on a certain alignment, of course with the exception of the corresponding side limitations.
The length of the off6et sections on the side limitations of the washer approximately corresponds with half the length of the ~ides. Such an arrangement is particularly advantageou6 fqr square or pentagonal or polygonal washers. The oPfset sections of the peripheral border thus connect immediately to the rounded corner areas. The rounded corner areas can thus lie in the principal plane of the washer, while the offset sections practically form the linear side limitations of the washer. In any case, it iB thu6 6ufficient to provide only one offset section on each side limitation to obtain the desired effect. It i~, of course, al60 pos6ible to provide further offset sections, but thi~ would make the tools more expensive and the separation of the closely ad~oining washers would present additional problem~.
According to the invention, it is furthermore suggested that the peripheral border of the washer connect to a convex curved center element with a central perforation opening for a fastener in the manner of a flange, in which the flange that forms the peripheral border i6 constructed considerably narrower on the linear ~ide limitation6, provided with the off6et sections, than in the rounded corner areas. This results in an additional 2C~3$~34 reinforcement effect, in particular in the outermost areas of the washer.
The total thickness of the peripheral border of the washer, including the offset sections, approximately corresponds with double the wall thickness of the washer. It i6 thus easily possible to manufacture the washers from a material which only has half the wall thickness, as compared to conventional washers, and can nonetheless still be separated within the magazine in a simple manner.
According to the invention, the offset sections of the per$pheral border are offset against the ~ections of the peripheral border that lie in the principal plane by a distance that approximately corresponds with the wall thickness of the washer. It is easily possible to execute such a deformation of the wa~her, because the offset sections on the peripheral border of the washer are only limited to the height of the material thickness.
The trouble-free function of the separation proce6s of a stack of the washer6 in the magazine is ensured, if the transitions between the mutually offset sections of the peripheral border are arranged at least approximately at the main contact surfaces of a separation device that serves for the separation of a stack of wagher6, or of the assigned counterpart regpectively. It is thus impo6sible that the lowermost washer in the ~tack ig lifted, or that any other disruptions could occur during the separation process. This particular washer thus provide~ a contact surface for the separation device that is effective over the entire height of the peripheral border.
, : .,, :,. :.
~:C5~ 4 Further characteristics and particular advantages of the washer according to the invention are desaribed in the following description with the aid of drawings. They show:
Figures 1 and 2: An example of a large area washer, in which Figure 2 represents a top view of the washer and Figure 1 represents a section along the line I-I in Figure 2;
Figure 3: A section along the line II-II in Figure 2;
Figure 4: A section along the line III-III in Figure 2;
Figure s: The detail A according to Figure 4 ln enlarged representation;
Figure 6: A section along the line IV-IV in Figure 2;-Figure 7: Several washers stacked on top of each otherwithin the magazine with a schematically indicated slider of the separation device.
The large area washer (1) is provided with a perforation opening (2) as receptacle for a fastener. The peripheral border (4) of the washer (1) that forms the peripheral limitation (3) i6, seen in its longitudinal direction, offset in one or more step- or curve-shaped sections. This results in sections (5 and 6) that are offset to each other. Individual sections (6) of the peripheral border (4) thus lie in the plane (E) that extends parallel to the principal plane (H) of the peripheral border (4) within a certain distance.
It is also possible to arrange the sections (6) which are off~et against the sections (5) of the peripheral border (4) that lie in the principal plane ~H) in the shape of a curve, 6een in the longitudinal direction of the peripheral border (4).
;, . .
2C~S~34 The parallel-extending opposite side areas are thus provided with mirror image arrangements of equally off6et sections (6).
The transitions ~7) between the mutually offset sections .
(S and 6) of the peripheral border (4) extend in the shape of a curve or a 6harp edge.
In order to ensure trouble-free function, it is suggested that the peripheral border (4) is provided with at least one off6et 6ection (6) on at least two opposing side limitations of the washer (1).
The transitions (7) are arranged in such a way.that they extend in a right angle or an acute angle to the longitudinal direction6 of the peripheral border (4). In the example shown in the drawings, the two transitions (7) between one offset section (6) and the two connecting 6ections that lie in the principal plane ~H) of the peripheral border (4) form an acute angle. It would al60 be pos6ible that the two transitions (7) extend parallel to each other.
If the washer (1) is constructed as a polygonal body, as:it i6 shown in the examples, the washer is preferably provided with rounded corner areas, in which each side limitation of the peripheral border (4) i~ provided with a central off6et section (6). The length of the offset 6ection (6) on the 6ide l~mitation~ of the washer (1) approximately corresponds with half the length of the side. The off6et 6ections (6) of the peripheral border (4) directly adjoin the rounded edge areas, which mean~ the ~ections (5) that lie in the principal plane (H).
The peripheral border (4) of the wa6her (1) connects to a ¢onvex, curved, center part (8) in the manner of a flange, in Z~;~3$B4 which the flange formed by the peripheral border (4) is constructed considerably narrower on the linear side limitations of the washer (1), provided with the offset sections (6), than on the rounded corner or trans~tion areas. This results in an additional reinforcement of the washer, in particular in those areas with the longest distance from the central perforation openings (2).
The total thickness (D) of the peripheral border (4) of the wa~her (1), including the offset sections (5, 6), approximately corresponds with double the wall thickness (S) of the wash~r (1).
The off6et sections (6) of the peripheral border (4) are thus offset against the sections (5) of the peripheral border (4) that lie in the principal plane (H) by a di~tance that approximately corre6ponds with the wall thickness (S) of the wa~her (1).
It is thus possible to selQct a wall thickness of o.s mm for the wa~her, as compared to a wall thickness of 1 mm that was thus far chosen to ensure the proper eeparation from a stack. The mea~ure~ according to the invention are not limited to the wall thicknes6. It i~ also possible to construct washer6 that thus far had a relatively large thickne66 in the manner according to the invention, in order to utilize these thinner washers in screw devices constructed for thicker washers.
Preliminary experiences showed that it is particularly important that the transitions (7) between the mutually offset sections (5 and 6) of the peripheral border (4) at least approximately correspond with the'main contact surface of a device ior the separation of a ~tack of washers (1) or the a~igned counterpart. Depending on the sort of separation device $~34 u6ed, may it be executed by a 61iding or swiveling movement, the transition6 and the mutually off~et 6ection6 (5 and 6) can thus be arranged in the area6 of the peripheral limitations (3) of *he wa6her (1) that are particularly intended for this purpo6e.
Depending on the basic 6hape of the washers, the length of the succe6sive 6ection6 (5 and 6) can be different and it i6 also po6sible to provide several 6ucce66ive offset 6ection6 (5 and 6) on each of the 6ide limitation6 or, for example, on the peripheral border of a circular or elliptic washer.
The mea6ure6 according to the invention can be applied to plane, as well a6 curved wa6hers. These mea6ure6 can, of course, al~o be applied with different peripheral 6hapes of the wa~her6, may it be a circular or elliptic, triangular or polygonal, or a strip-shaped washer with rounded corner area6.
In order to en6ure a 6ecure support of the washer on the corresponding ~ub6tructure, it i8 u6ually nece6sary to provide at lea~t three off6et 6ections (6) on the peripheral border of the washer. Depending on the application purpose, or application prerequisites, a corresponding number of 6uch offset sections can be provided. With elongated wa6hers it would also be possible to provide offset 6ections only on two opposing side limitations, which would ensure an exact 6upport by their corresponding length.
According to the invention, it would al~o be pos6ible to off~et the sections (6) in several stages, in which even iarger off6et depths would be pos6ible, 60 that the offset section does not only approximately corre6pond with the material thicknes~, but lies considerably above same.
.: :, " :: ., : .
2~3g~4 Figure 7 schematically illustrates how 6everal washers (1) are arranged above each other in a 6tack. The off~et 6ections (6) adjoin the solid base (17) of the separation device, in which a swiveling or linear-moving 61ider (9) e~ects the corre6pondingly lowermo~t wa~her (1) from the 6tack. The ~pecial con6truction of the edges of the washer6 ensures that only the lowermost wa6her (1) is taken hold of, in which the remaining stack of washers is lifted in conventional manner during ejection of the lowermost washer (1).
As a supplementary measure and for the constructive a~d ~tability-related improvement of the washer, it is very advantageou~ if reinforcement beads (10) are provided in the convex curved center area (8), in which these reinforcements beads radiate toward the corner areas and protrude into the convex area (8). These reinforcement beads (10) are constructed shorter than the distance between the indentation (11) that defines the perforation opening ~2) and the flange-like peripheral border (4). The indentation (11) in the washer (1) that define~ the perforation opening (2) is provided with a ~pherlcal ~egment-like surface.
The measure according to the invention obtain a considerable improvement o~ large area washers in regard to constructive, as well as materialistic aspects. Despite the fact that only little material iB used to manufacture the washers, sufficient stability and a trouble-free separation of the washers from a stack can be ensured.
Such washers are primarily used for the attachment of single or multilayered roofing sheets andlor insulation strips onto a solid substructure. If these washers are retained in the magazine of a screw device and have to be separated for the actual screwing process, it is necessary that the washers have a certain thicknes6 in order to ensure trouble-free operation~. It was thus far often necessary to manufacture the washers from a corre6pondingly thick material in order to separate them, although a thinner material would have provided 6ufficient stability for the attachment.
One known circular large area washer (DE-B-1269840~ is provided with sections of successive ribs that are arranged coaxially to the central perforation opening and have a distance from 6ame. The stacking height of the successively layered wa6her~ results from their total thickness, which in turn is compiled of their wall thicknes6 and the ribs.
Furthermore, a wa6her that extends wave-shaped in its peripheral direction (Japanese Patent No. A Sho 63tl988]-33503) i~ known which i6 constructed in the shape of a ring with a large central perforation opening. These washers can be stacked on top of each other, but a separation transverse to the center axis of the central perforation $8 not possible because the height of the waves amount6 to several times the wall thickness of the wa~hers.
Another known large area wa6her (US-A-4890968) is provided with ribs that extend radially from the inside towards the out6ide between the outer peripheral border and the central perforation opening for the fastener in addition to the ribs extending around the peripheral border, in which several washers can be 6tacked on top of each other. The ribs on the washers ensure that the peripheral border6 of the washers that are stacked on top of each other have a correspondingly large distance from each other, in order to ensure that the slider of the separation device only takes hold of the lowermost washer of the stack. During the stacking of these washers, an enormous 6tacking height results with even a small number of washers because the thickness of each washer in the stack represents several time6 the material thickness of the washers.
This invention i~ based on the ob~ective to construct a wa6her in 6uch a way that it can be u6ed in the corresponding separation device6, even if thinner material6 are used, and that a redu¢tion of the 6tacking height is obtained.
According to the invention, it is suggested that the outer peripheral border of the washer, 6een in its longitudinal direction, is off6et in several sections that have one or more step or curve 6hapes, and that the transitions between the mutually off6et sections of the peripheral border are curved or ~harp-angled.
According to the invention, this measure obtains the advantage that the peripheral border of the washer provides a wider contact ~urface for the separation device during the ~eparation within the magazine, in which the same 6tacking height can be obtained as with washers of correspondingly thicker material, in particular at the transitions between the mutually offset sections of the peripheral border.
The transitions between the mutually offset sections of the peripheral border are either curved or sharp-angled. These transitions represent a particularly beneficial factor in the separation of the wa6hers, because this area provides a contact surface for the separation device over the entire height of the peripheral border of the washer.
In addition to this, these sections of the peripheral border which are offset in one or more ~tep or curve shapes contribute to a further reinforcement of the washer.
It i8 thus pos6ible to select a considerably thinne~ raw material for the manufacturing of large area washers, while a perfect separation within the magazine is ensured.
The invention furthermore leads to a considerable reduction in weight and space, because the number of units in an equally high stack of washers can be considerably increased. In regard to constructive considerations, it can be advantageous if the ~ingle 6ections of the peripheral border6, seen in longitudinal direction of same, extend in a plane parallel to, and at a di6tance from, these 6ection6. Thi6 provides the advantage that the off~et eections adjoin the ba6e of the FeparatiOn device with their ~ntire surface, while the sections of the peripheral border that lie in the principal plane form the upper limitation of the total thic~ne6s of the peripheral border.
According to another example, it is also possible that the sections which are off6et against the cections of the peripheral border that lie in the principal plane, seen in longitudinal 2~ 34 direction of the peripheral border, extend in the ~hape of a ~urve. This fact provides the po~sibility of a point- or line-shaped attachment of the washer to a solid substructure, in which all off6et section6 are supported equally.
It is furthermore advantageous, if the areas of the peripheral border that extend parallel and oppose each other represent a mirror image arrangement with equally offset sections. This fact is particularly advantageous if the washers are intended to be stacked on top of each other in the same manner, but in different positions. If the stack of square washer6 is viewed from the top, it does not matter how the~
washers are stacked on top of each other.
According to the invention, it is particularly advantageous if the peripheral border is provided with at least one offset 6ection on at least two opposing areas of the washer. This fact not only ensures an orderly support of the correspondingly lowest wa6her, but also neces6itates only a relatively simple tool.
The 6pecial construction of the transitions between the mutually offset section6 i6 particularly advantageous in regard to a 6implified manufacturing proces6, as well as the realization of a trouble-free 6eparation process. It i5 thus advantageous, if the tran~itions are constructed in such a way that they extend in a rlght angle or an acute angle to the longitudinal direction of the peripheral border. The two transitions between one offset ~ection and the two ad~acent sections that lie in the principal plane of the peripheral border can extend parallel to each other or form an acute angle with each other.
., ,. , ,: , .
Z~53S~4 In a polygonal arrangement of the washer with preferably rounded corner areas, one offset section each is pro~ided on the peripheral border in the center of each side limitation. This fact provides another simple stacking possibility for the washers to be inserted into the magazine, since the stacking of the washers does not depend on a certain alignment, of course with the exception of the corresponding side limitations.
The length of the off6et sections on the side limitations of the washer approximately corresponds with half the length of the ~ides. Such an arrangement is particularly advantageou6 fqr square or pentagonal or polygonal washers. The oPfset sections of the peripheral border thus connect immediately to the rounded corner areas. The rounded corner areas can thus lie in the principal plane of the washer, while the offset sections practically form the linear side limitations of the washer. In any case, it iB thu6 6ufficient to provide only one offset section on each side limitation to obtain the desired effect. It i~, of course, al60 pos6ible to provide further offset sections, but thi~ would make the tools more expensive and the separation of the closely ad~oining washers would present additional problem~.
According to the invention, it is furthermore suggested that the peripheral border of the washer connect to a convex curved center element with a central perforation opening for a fastener in the manner of a flange, in which the flange that forms the peripheral border i6 constructed considerably narrower on the linear ~ide limitation6, provided with the off6et sections, than in the rounded corner areas. This results in an additional 2C~3$~34 reinforcement effect, in particular in the outermost areas of the washer.
The total thickness of the peripheral border of the washer, including the offset sections, approximately corresponds with double the wall thickness of the washer. It i6 thus easily possible to manufacture the washers from a material which only has half the wall thickness, as compared to conventional washers, and can nonetheless still be separated within the magazine in a simple manner.
According to the invention, the offset sections of the per$pheral border are offset against the ~ections of the peripheral border that lie in the principal plane by a distance that approximately corresponds with the wall thickness of the washer. It is easily possible to execute such a deformation of the wa~her, because the offset sections on the peripheral border of the washer are only limited to the height of the material thickness.
The trouble-free function of the separation proce6s of a stack of the washer6 in the magazine is ensured, if the transitions between the mutually offset sections of the peripheral border are arranged at least approximately at the main contact surfaces of a separation device that serves for the separation of a stack of wagher6, or of the assigned counterpart regpectively. It is thus impo6sible that the lowermost washer in the ~tack ig lifted, or that any other disruptions could occur during the separation process. This particular washer thus provide~ a contact surface for the separation device that is effective over the entire height of the peripheral border.
, : .,, :,. :.
~:C5~ 4 Further characteristics and particular advantages of the washer according to the invention are desaribed in the following description with the aid of drawings. They show:
Figures 1 and 2: An example of a large area washer, in which Figure 2 represents a top view of the washer and Figure 1 represents a section along the line I-I in Figure 2;
Figure 3: A section along the line II-II in Figure 2;
Figure 4: A section along the line III-III in Figure 2;
Figure s: The detail A according to Figure 4 ln enlarged representation;
Figure 6: A section along the line IV-IV in Figure 2;-Figure 7: Several washers stacked on top of each otherwithin the magazine with a schematically indicated slider of the separation device.
The large area washer (1) is provided with a perforation opening (2) as receptacle for a fastener. The peripheral border (4) of the washer (1) that forms the peripheral limitation (3) i6, seen in its longitudinal direction, offset in one or more step- or curve-shaped sections. This results in sections (5 and 6) that are offset to each other. Individual sections (6) of the peripheral border (4) thus lie in the plane (E) that extends parallel to the principal plane (H) of the peripheral border (4) within a certain distance.
It is also possible to arrange the sections (6) which are off~et against the sections (5) of the peripheral border (4) that lie in the principal plane ~H) in the shape of a curve, 6een in the longitudinal direction of the peripheral border (4).
;, . .
2C~S~34 The parallel-extending opposite side areas are thus provided with mirror image arrangements of equally off6et sections (6).
The transitions ~7) between the mutually offset sections .
(S and 6) of the peripheral border (4) extend in the shape of a curve or a 6harp edge.
In order to ensure trouble-free function, it is suggested that the peripheral border (4) is provided with at least one off6et 6ection (6) on at least two opposing side limitations of the washer (1).
The transitions (7) are arranged in such a way.that they extend in a right angle or an acute angle to the longitudinal direction6 of the peripheral border (4). In the example shown in the drawings, the two transitions (7) between one offset section (6) and the two connecting 6ections that lie in the principal plane ~H) of the peripheral border (4) form an acute angle. It would al60 be pos6ible that the two transitions (7) extend parallel to each other.
If the washer (1) is constructed as a polygonal body, as:it i6 shown in the examples, the washer is preferably provided with rounded corner areas, in which each side limitation of the peripheral border (4) i~ provided with a central off6et section (6). The length of the offset 6ection (6) on the 6ide l~mitation~ of the washer (1) approximately corresponds with half the length of the side. The off6et 6ections (6) of the peripheral border (4) directly adjoin the rounded edge areas, which mean~ the ~ections (5) that lie in the principal plane (H).
The peripheral border (4) of the wa6her (1) connects to a ¢onvex, curved, center part (8) in the manner of a flange, in Z~;~3$B4 which the flange formed by the peripheral border (4) is constructed considerably narrower on the linear side limitations of the washer (1), provided with the offset sections (6), than on the rounded corner or trans~tion areas. This results in an additional reinforcement of the washer, in particular in those areas with the longest distance from the central perforation openings (2).
The total thickness (D) of the peripheral border (4) of the wa~her (1), including the offset sections (5, 6), approximately corresponds with double the wall thickness (S) of the wash~r (1).
The off6et sections (6) of the peripheral border (4) are thus offset against the sections (5) of the peripheral border (4) that lie in the principal plane (H) by a di~tance that approximately corre6ponds with the wall thickness (S) of the wa~her (1).
It is thus possible to selQct a wall thickness of o.s mm for the wa~her, as compared to a wall thickness of 1 mm that was thus far chosen to ensure the proper eeparation from a stack. The mea~ure~ according to the invention are not limited to the wall thicknes6. It i~ also possible to construct washer6 that thus far had a relatively large thickne66 in the manner according to the invention, in order to utilize these thinner washers in screw devices constructed for thicker washers.
Preliminary experiences showed that it is particularly important that the transitions (7) between the mutually offset sections (5 and 6) of the peripheral border (4) at least approximately correspond with the'main contact surface of a device ior the separation of a ~tack of washers (1) or the a~igned counterpart. Depending on the sort of separation device $~34 u6ed, may it be executed by a 61iding or swiveling movement, the transition6 and the mutually off~et 6ection6 (5 and 6) can thus be arranged in the area6 of the peripheral limitations (3) of *he wa6her (1) that are particularly intended for this purpo6e.
Depending on the basic 6hape of the washers, the length of the succe6sive 6ection6 (5 and 6) can be different and it i6 also po6sible to provide several 6ucce66ive offset 6ection6 (5 and 6) on each of the 6ide limitation6 or, for example, on the peripheral border of a circular or elliptic washer.
The mea6ure6 according to the invention can be applied to plane, as well a6 curved wa6hers. These mea6ure6 can, of course, al~o be applied with different peripheral 6hapes of the wa~her6, may it be a circular or elliptic, triangular or polygonal, or a strip-shaped washer with rounded corner area6.
In order to en6ure a 6ecure support of the washer on the corresponding ~ub6tructure, it i8 u6ually nece6sary to provide at lea~t three off6et 6ections (6) on the peripheral border of the washer. Depending on the application purpose, or application prerequisites, a corresponding number of 6uch offset sections can be provided. With elongated wa6hers it would also be possible to provide offset 6ections only on two opposing side limitations, which would ensure an exact 6upport by their corresponding length.
According to the invention, it would al~o be pos6ible to off~et the sections (6) in several stages, in which even iarger off6et depths would be pos6ible, 60 that the offset section does not only approximately corre6pond with the material thicknes~, but lies considerably above same.
.: :, " :: ., : .
2~3g~4 Figure 7 schematically illustrates how 6everal washers (1) are arranged above each other in a 6tack. The off~et 6ections (6) adjoin the solid base (17) of the separation device, in which a swiveling or linear-moving 61ider (9) e~ects the corre6pondingly lowermo~t wa~her (1) from the 6tack. The ~pecial con6truction of the edges of the washer6 ensures that only the lowermost wa6her (1) is taken hold of, in which the remaining stack of washers is lifted in conventional manner during ejection of the lowermost washer (1).
As a supplementary measure and for the constructive a~d ~tability-related improvement of the washer, it is very advantageou~ if reinforcement beads (10) are provided in the convex curved center area (8), in which these reinforcements beads radiate toward the corner areas and protrude into the convex area (8). These reinforcement beads (10) are constructed shorter than the distance between the indentation (11) that defines the perforation opening ~2) and the flange-like peripheral border (4). The indentation (11) in the washer (1) that define~ the perforation opening (2) is provided with a ~pherlcal ~egment-like surface.
The measure according to the invention obtain a considerable improvement o~ large area washers in regard to constructive, as well as materialistic aspects. Despite the fact that only little material iB used to manufacture the washers, sufficient stability and a trouble-free separation of the washers from a stack can be ensured.
Claims (14)
1. Large area washer with a central area that is provided with a perforation opening as a receptacle for a fastener, with an outer peripheral border and with offset sections to simplify the separation from a stack, characterized by the fact that the outer peripheral border (4) of the washer (1), seen in its longitudinal direction, is provided with one or more sections (5 and 6) that are offset in the shape of a step or a curve, and that the transitions (7) between the mutually offset sections (5, 6) of the peripheral border (4) are constructed curved or sharp-angled.
2. Washer according to Claim 1, characterized by the fact that individual sections (6) of the peripheral border (4), seen in longitudinal direction of same, lie in a level (E) that extends parallel and within a certain distance to the principal plane (H) of the peripheral border (4).
3. Washer according to Claim 2, characterized by the fact that the sections (6) that are offset against the sections (5) of the peripheral border (4) that lie in the principal plane (H) extend in the shape of a curve, seen in longitudinal direction of the peripheral border (4).
4. Washer according to Claims 1, 2 or 3, characterized by the fact that opposing areas of the peripheral border (4) that extend parallel to each other are constructed as a mirror image arrangement with equally offset sections (5, 6).
5. Washer according to Claim 1, characterized by the fact that the peripheral border (4) is provided with at least one offset section on at least two opposing areas of the washer (1).
6. Washer according to Claims 1 and 5, characterized by the fact that the transitions (7) are constructed in such a way that they extend in a right angle or an acute angle to the longitudinal direction of the peripheral border (4).
7. Washer according to Claim 6, characterized by the fact that the two transitions (7) between one offset section (6) and the two adjacent sections (5) that lie in the principal plane (H) of the peripheral border (4) extend parallel to each other or form an acute angle with each other.
8. Washer according to Claim 1 and/or one of the previous claims, characterized by the fact that one offset section (6) each is provided in the center of each side limitation, if polygonal washers (1) with preferably rounded corner areas of the peripheral borders (4) are used.
9. Washer according to Claim 8, characterized by the fact that the length of the offset sections (6) on the side limitations of the washer (1) approximately correspond with half the length of the sides.
10. Washer according to Claims 5 or 8 and 9, characterized by the fact that the offset sections (6) of the peripheral border (4) directly adjoin the rounded corner areas.
11. Washer according to Claim 1 or one of the previous claims, characterized by the fact that the peripheral border (4) of the washer (1) connects to a convex, curved, center element (8) with its central perforation opening (2) in the manner of a flange, in which the flange that is formed by the peripheral border (4) is constructed considerably narrower on the linear side limitations of the washer (1) that are provided with the offset sections (6) than on the rounded corner areas.
12. Washer according to Claim 1 and/or one of the previous claims, characterized by the fact that the total thickness (D) of the peripheral border (4) of the washer (1), including the offset sections (6), approximately corresponds with double the wall thickness (S) of the washer (1).
13. Washer according to Claim 12, characterized by the fact that the offset sections (6) of the peripheral border (4) are offset against the sections (5) of the peripheral border (4) that lie in the principal plane (H) by a distance that approximately corresponds with the wall thickness (S) of the washer (1).
14. Washer according to Claim 1 and one of the previous claims, characterized by the fact that the transitions (7) between the mutually offset sections (5, 6) of the peripheral border (4) at least approximately correspond with the main contact surfaces of a device for the separation of a stack of washers (1) or the assigned counterpart.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4008782.4 | 1990-03-19 | ||
| DE4008782A DE4008782C1 (en) | 1990-03-19 | 1990-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2053884A1 true CA2053884A1 (en) | 1991-09-20 |
Family
ID=6402556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002053884A Abandoned CA2053884A1 (en) | 1990-03-19 | 1991-03-14 | Large area washer |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0472697B1 (en) |
| AT (1) | ATE124506T1 (en) |
| AU (1) | AU7466391A (en) |
| CA (1) | CA2053884A1 (en) |
| DE (2) | DE4008782C1 (en) |
| WO (1) | WO1991014873A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3971428A1 (en) * | 2020-09-16 | 2022-03-23 | Tile Fixer Limited | Fixing washer |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4312533C1 (en) * | 1993-04-16 | 1994-11-17 | Sfs Ind Holding Ag | Large washer, essentially rectangular in shape |
| DE4342260C2 (en) * | 1993-12-10 | 1996-05-02 | Sfs Ind Holding Ag | Large washer |
| DE4342262C2 (en) * | 1993-12-10 | 1995-11-30 | Sfs Ind Holding Ag | Large washer |
| DE4342261C2 (en) * | 1993-12-10 | 1995-11-30 | Sfs Ind Holding Ag | Large washer |
| DE9420154U1 (en) * | 1994-12-16 | 1995-03-02 | Eternit Ag | System for selective fastening of facade panels |
| DE19518780A1 (en) * | 1995-05-22 | 1996-12-05 | Sfs Ind Holding Ag | Large washer |
| DE19750926A1 (en) * | 1997-11-17 | 1999-06-02 | Sfs Ind Holding Ag | Large washer |
| US6205730B1 (en) * | 1999-01-13 | 2001-03-27 | Illinois Tool Works Inc | Roofing plate for securing roofing membrane |
| EP4150171A1 (en) * | 2020-05-12 | 2023-03-22 | OMG, Inc. | Plate advancement mechanism for roofing tool |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1670890A (en) * | 1926-10-22 | 1928-05-22 | Illmer Louis | Washer device |
| US3136206A (en) * | 1962-03-23 | 1964-06-09 | Bishop & Babcock Corp | Shim-washer |
| CH406740A (en) * | 1963-05-14 | 1966-01-31 | Bruehwiler Ferry | Screw locking |
| DE1806274A1 (en) * | 1968-10-31 | 1970-05-14 | Luk Lamellen & Kupplungsbau | Corrugated steel spring washer |
| US4380413A (en) * | 1980-11-03 | 1983-04-19 | Illinois Tool Works Inc. | Load-distributive washer for use with compressible material |
| US4574551A (en) * | 1984-05-23 | 1986-03-11 | Giannuzzi Louis | Load-bearing plate |
| AT388408B (en) * | 1987-09-17 | 1989-06-26 | Sfs Stadler Ag | WASHER |
| US4890968A (en) * | 1989-02-15 | 1990-01-02 | Illinois Tool Works Inc. | Stackable roofing washer |
-
1990
- 1990-03-19 DE DE4008782A patent/DE4008782C1/de not_active Expired - Fee Related
-
1991
- 1991-03-14 AU AU74663/91A patent/AU7466391A/en not_active Abandoned
- 1991-03-14 WO PCT/EP1991/000488 patent/WO1991014873A1/en active IP Right Grant
- 1991-03-14 DE DE59105839T patent/DE59105839D1/en not_active Expired - Fee Related
- 1991-03-14 CA CA002053884A patent/CA2053884A1/en not_active Abandoned
- 1991-03-14 EP EP91906046A patent/EP0472697B1/en not_active Expired - Lifetime
- 1991-03-14 AT AT91906046T patent/ATE124506T1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3971428A1 (en) * | 2020-09-16 | 2022-03-23 | Tile Fixer Limited | Fixing washer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991014873A1 (en) | 1991-10-03 |
| AU7466391A (en) | 1991-10-21 |
| DE4008782C1 (en) | 1991-09-12 |
| EP0472697A1 (en) | 1992-03-04 |
| EP0472697B1 (en) | 1995-06-28 |
| DE59105839D1 (en) | 1995-08-03 |
| ATE124506T1 (en) | 1995-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |