CA1245945A - Shortenable umbrella - Google Patents
Shortenable umbrellaInfo
- Publication number
- CA1245945A CA1245945A CA000481079A CA481079A CA1245945A CA 1245945 A CA1245945 A CA 1245945A CA 000481079 A CA000481079 A CA 000481079A CA 481079 A CA481079 A CA 481079A CA 1245945 A CA1245945 A CA 1245945A
- Authority
- CA
- Canada
- Prior art keywords
- strut
- canopy
- hinge
- scissors
- supporting
- 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.)
- Expired
Links
- 230000008093 supporting effect Effects 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 210000003127 knee Anatomy 0.000 claims description 5
- 230000008719 thickening Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 10
- 238000005755 formation reaction Methods 0.000 description 8
- 210000002105 tongue Anatomy 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- ZUXNHFFVQWADJL-UHFFFAOYSA-N 3,4,5-trimethoxy-n-(2-methoxyethyl)-n-(4-phenyl-1,3-thiazol-2-yl)benzamide Chemical compound N=1C(C=2C=CC=CC=2)=CSC=1N(CCOC)C(=O)C1=CC(OC)=C(OC)C(OC)=C1 ZUXNHFFVQWADJL-UHFFFAOYSA-N 0.000 description 1
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 1
- 240000007643 Phytolacca americana Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 101150056961 linX gene Proteins 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B19/00—Special folding or telescoping of umbrellas
- A45B19/10—Special folding or telescoping of umbrellas with collapsible ribs
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B25/00—Details of umbrellas
- A45B25/22—Devices for increasing the resistance of umbrellas to wind
Landscapes
- Tents Or Canopies (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A telescopic umbrella has a slider movable on a stick and has a canopy which supports forks to be opened and closed by the slider and which are provided in a star-shaped arrangement around a crown. The crown is fitted on the stick and around the slider. In each case a link parallelogram is actuated by a scissors lever drive for the control of the folding motion of peripheral canopy spokes.
In order to enable the canopy supporting forks to be more stable in their middle region, which is sensitive to deformation or rupture, and in particular to make in more resistant to excessive strain by gusts of wind causing the canopy to turn inside out, a hinge, connecting the inner canopy strut to the control strut, in the open position of the umbrella canopy, lies adjacent to the diagonal of the link parallelogram and bears against the bottom edge of a supporting strut so that the link parallelogram appears as a flat triangular formation. This triangular formation has an obtuse outer angle (?), while the hinge of the link parallelogram, connecting the supporting strut to a short arm of the peripheral canopy spoke, adopts from above about the same distance from the diagonal as the hinge connecting the inner canopy strut to the control strut adopts from below.
A telescopic umbrella has a slider movable on a stick and has a canopy which supports forks to be opened and closed by the slider and which are provided in a star-shaped arrangement around a crown. The crown is fitted on the stick and around the slider. In each case a link parallelogram is actuated by a scissors lever drive for the control of the folding motion of peripheral canopy spokes.
In order to enable the canopy supporting forks to be more stable in their middle region, which is sensitive to deformation or rupture, and in particular to make in more resistant to excessive strain by gusts of wind causing the canopy to turn inside out, a hinge, connecting the inner canopy strut to the control strut, in the open position of the umbrella canopy, lies adjacent to the diagonal of the link parallelogram and bears against the bottom edge of a supporting strut so that the link parallelogram appears as a flat triangular formation. This triangular formation has an obtuse outer angle (?), while the hinge of the link parallelogram, connecting the supporting strut to a short arm of the peripheral canopy spoke, adopts from above about the same distance from the diagonal as the hinge connecting the inner canopy strut to the control strut adopts from below.
Description
s The present invention relates to a telescopic, or otherwise shortenable, umbrella. More particularly, the present invention relates -to such unbrellas having a stick with a fixed crown, a slider and a plurality of inner canopy struts each hinged at its inner end to the crown, each inner canopy strut crossing, and being connected by a scissors hinge to, a respective supporting strut which is hinged at its inner end to the slider, a scissors hand]e portion oE
each inner canopy strut extending outwards beyond the scissors hinge and being hinged to the inner end of a respective control strut which extends outwards beneath the supporting strut, and a plurality of peripheral canopy spokes each of which is hinged to the outer end of a respective one of the control struts and has, inwardly of this latter hinge, a short arm hinged to the outer end of the supporting strut, whereby the scissors handle and short arm form short links, and the control strut and the portion of the supporting strut above the control strut form long links, of a link quadrilateral. Such an umbrella is here-inafter referred to as of the kind described.
Umbrellas of this design, which are distinguished,say, as compared wi-th the widely practised design having parallelogram kinematics in accordance with BE-Patent 423344 or US-Patent 3,467,115, by scissors-actuated parallelogram-folding kinematics of the canopy spokes arranged in theperipheral region, are already known from, for example, US-Patents No. 177.339 and 180119. Umbrellas according to these lat-ter specifications can be shortened into small-volume forma-tions, and by the ac-tuation of the slider, make use at the sarne time of a con-tinuous complete folding of the canopy cover at one pull. In spite of their, in t~emselves perEectly stable structure, in strong gusts of wind, turning o~ the umbrella canopy inside out wi-th the dome pointing upwards cannot be avoided. Because of the excessive loading ,,,, .~i 5~
caused in that case, and in particular of the tensile and compxessive stress loading the sensitive middle region, this leads to deformations or even total destruction of the canopy spokes or the hinges. For the avoidance of the destructive turning inside out of the umbrella canopy, according to US-Pat. 177.339 threads are provided, which secure the opened canopy spokes to the umbrella handle. But in Eact this measure does not prevent -the turning inside out of the umbrella canopy and furthermore the tension threads for the restraining of the canopy spokes are in the way when carrying the open umbrella. For that reason the production of this otherwise seemingly not impracticable design of umbrella has also up to now not been commercially acceptable.
The object of the invention is to create an umbrella of the kind described, which satisfactorily endures even turning inside out of the open umbrella canopy by gusts of wind without deformation or destruction of the canopy spokes and their hinges, where the preventive measures demand minimum outlay and the canopy, which has been turned inside out, can easily be restored by returning the slider into its normal position.
In meeting this object, the invention provides a shortenable umbrella having a stick with a fixed crown, a slider fixable in an uppermost position by a catch, whereby a free shifting path extends between the uppermost arrested slider and the crown, and a plurality of inner canopy struts each hinged at an inner end thereof to said crown, each of said inner canopy struts crossing, and being connected by a scissors hinge -to, a respec-tive supporting strut which is hinged at an inner end thereof to said slider, a scissors handle portion of each oE said inner canopy struts extending outwards beyond said scissors hinge and being hinged to an inner end of a respective control stru-t which extends ' 1 'r - 2a -ou-twards beneath a respective one of said suppor-ting struts, and a plurality of peripheral canopy spokes each of which is hinged to an outer end of a respective one of said control struts and has, inwardly of this latter hinge, a short arm S hinged to an outer end of a respective one of said supporting struts, whereby said scissors handle and short arm form short links, and said control strut and a portion of said supporting strut above said control strut form long links, of a link quadrilateral; wherein said hinge connecting each of said inner canopy struts to said respective control strut lies, in the opened position of said frame, adjacent to the diagonal through said scissors hinge of said link ~uadrilateral and lies adjacent to a bottom edge bearingstop of said respective supporting strut so that each of said link quadrilaterals lies blocked off and stiffened and appears as a triangle with an obtuse angle adjacent to said hinge connecting said supporting strut and said short arm, and said hinge connecting said supporting strut to said short arm is spaced substantially the same distance above said diagonal as said hinge connecting said inner canopy strut to said control strut is spaced below said diagonal.
The above-stated problem is solved in accordance with the invention in that the hinge connecting each inner
each inner canopy strut extending outwards beyond the scissors hinge and being hinged to the inner end of a respective control strut which extends outwards beneath the supporting strut, and a plurality of peripheral canopy spokes each of which is hinged to the outer end of a respective one of the control struts and has, inwardly of this latter hinge, a short arm hinged to the outer end of the supporting strut, whereby the scissors handle and short arm form short links, and the control strut and the portion of the supporting strut above the control strut form long links, of a link quadrilateral. Such an umbrella is here-inafter referred to as of the kind described.
Umbrellas of this design, which are distinguished,say, as compared wi-th the widely practised design having parallelogram kinematics in accordance with BE-Patent 423344 or US-Patent 3,467,115, by scissors-actuated parallelogram-folding kinematics of the canopy spokes arranged in theperipheral region, are already known from, for example, US-Patents No. 177.339 and 180119. Umbrellas according to these lat-ter specifications can be shortened into small-volume forma-tions, and by the ac-tuation of the slider, make use at the sarne time of a con-tinuous complete folding of the canopy cover at one pull. In spite of their, in t~emselves perEectly stable structure, in strong gusts of wind, turning o~ the umbrella canopy inside out wi-th the dome pointing upwards cannot be avoided. Because of the excessive loading ,,,, .~i 5~
caused in that case, and in particular of the tensile and compxessive stress loading the sensitive middle region, this leads to deformations or even total destruction of the canopy spokes or the hinges. For the avoidance of the destructive turning inside out of the umbrella canopy, according to US-Pat. 177.339 threads are provided, which secure the opened canopy spokes to the umbrella handle. But in Eact this measure does not prevent -the turning inside out of the umbrella canopy and furthermore the tension threads for the restraining of the canopy spokes are in the way when carrying the open umbrella. For that reason the production of this otherwise seemingly not impracticable design of umbrella has also up to now not been commercially acceptable.
The object of the invention is to create an umbrella of the kind described, which satisfactorily endures even turning inside out of the open umbrella canopy by gusts of wind without deformation or destruction of the canopy spokes and their hinges, where the preventive measures demand minimum outlay and the canopy, which has been turned inside out, can easily be restored by returning the slider into its normal position.
In meeting this object, the invention provides a shortenable umbrella having a stick with a fixed crown, a slider fixable in an uppermost position by a catch, whereby a free shifting path extends between the uppermost arrested slider and the crown, and a plurality of inner canopy struts each hinged at an inner end thereof to said crown, each of said inner canopy struts crossing, and being connected by a scissors hinge -to, a respec-tive supporting strut which is hinged at an inner end thereof to said slider, a scissors handle portion of each oE said inner canopy struts extending outwards beyond said scissors hinge and being hinged to an inner end of a respective control stru-t which extends ' 1 'r - 2a -ou-twards beneath a respective one of said suppor-ting struts, and a plurality of peripheral canopy spokes each of which is hinged to an outer end of a respective one of said control struts and has, inwardly of this latter hinge, a short arm S hinged to an outer end of a respective one of said supporting struts, whereby said scissors handle and short arm form short links, and said control strut and a portion of said supporting strut above said control strut form long links, of a link quadrilateral; wherein said hinge connecting each of said inner canopy struts to said respective control strut lies, in the opened position of said frame, adjacent to the diagonal through said scissors hinge of said link ~uadrilateral and lies adjacent to a bottom edge bearingstop of said respective supporting strut so that each of said link quadrilaterals lies blocked off and stiffened and appears as a triangle with an obtuse angle adjacent to said hinge connecting said supporting strut and said short arm, and said hinge connecting said supporting strut to said short arm is spaced substantially the same distance above said diagonal as said hinge connecting said inner canopy strut to said control strut is spaced below said diagonal.
The above-stated problem is solved in accordance with the invention in that the hinge connecting each inner
2~ canopy strut to the respective control strut lies, in the opened position of the frame, adjacent -to the diagonal through -the scissors hinge of -the link quadrilateral and lies adjacent to the bo-ttom edge of the suppor-ting s-trut so that -the link quadrilateral appears as a -triangle with an obtuse angle adjacent to -the hinge between the support strut and the short arrn, and the hinge connecting the supporting strut to the short arm adopts from above substantially the same distance Erorn the diagonal as that connecting .
~ ~5~ ~
the inner canopy strut to the control strut adopts from below the diagonal.
In this way an umbrella is created, having essentially link parallelogram kinematics moved by a scissor lever-drive, of the kind described, which withstandseven high wind forces and which, in the event that, through excessively high strain pressure, resulting from gusts of wind, the canopy does indeed turn inside out upwards, bu-t it does not then become deformed or destroyed. This results from the closely adjacent positioning effected with the canopy open, of the hinge between the scissors handle of the inner canopy strut and the supporting strut, just underneath the line of dead centre, iOe. the diagonal of the linkage as well as from the association of the hinge between the short arm of the peripheral canopy spoke and the supporting strut at about the same short distance with respect to this diagonal line. From that there results an opened canopy shape, the scissors lever arms and link parallelogram of which appear rather like a flat triangular formation which braces itself mutually in a stabilizing manner up to a blocking position with the parts lying largely against or even in one another. If the canopy, nevertheless, does turn inside out because of far too strong a wind pressure, the link of each guadrilateral forming the scissors lever arm integrated into it, comes to lie just in front of the aforesaid diagonal, entirely in the locking position against or in one another, along with a brief buckling (resulting inter alia from the bending strain in the parts and through the play in the hinge bearings) of the outer side of the links which has not yet completely come up to a stop against the control strut with the formation of a second fixed stop.
Through these two fixed stops a total blocking position results and largely a self-s-tabilization of the middle region of -the canopy, which is in danger of deformation or ~L 2 L.7~ S ~
rupture, with the consequence that considerable tensile forces are led away into -the less endangered flexible outer region of the canopy. The residual buckling of the outer side of the links for formation of the second stop and the S completed locked bearing position is effected gently via swing of only a few degrees by the short arm of the peripheral canopy spoke. The residual s-tress movement of the fork mechanism in the middle region of the canopy upon the dome of the canopy becoming inverted upwards is therefore kept as small as possible. Since the blocking position is effected in front of the aforesaid diagonal line, a sideways twist through, and shearing out of line of, -the links is at the same time avoided and thereby finally once again deformation or destruction of -the canopy spoke or of its hinge. Through the aforesaid design and arrangement of the canopy kinematics the latter may, in particular, through the aforesaid dead-centre stabilization stops and bearings, one more without excessive stress or deformation or rupture, and simply through pulling down the umbrella slider on the umbrella stick, be restored out of the upwards inverted doming into the regular canopy doming again. In doing this the length of shift to the covered by the umbrella slider is comparatively short, since the opening scissors action by the inner canopy strut and the supporting strut proceading from it, after a comparatively short moment of overcoming stress, releases the necessary reversal togglepoint of the peripheral canopy spokes via the link quadrilateral lying blocked off in one another. For the realization of the inven-tion, no additional technical outlay is needed as compared with ~he basic concep-ts which may be derived from the old models men-tioned initially.
A particularly s-tress-resistant and operationally reliable refinement of the invention results if the one shor-t link of the link quadrilateral, forming the scissors 5~
handle, consists of a fork which supports and guides the scissor-hinge, the supporting strut and its own connecting hinge; and if the other short link of the link quadrilateral, formed by the short arm of the peripheral canopy-spoke, at one end, by means of a further fork, guides the upper long link of the link quadrilateral to be able to rotate at the hinge, and, at the other end, in its connection to the lower long link quadrilateral, i.e. to the control strut, at the hinge is guided rotatably by a further fork on the outer end of the control strut; and if the latter by its top edge, or by the bottom of its profile, or by indentations, forms a stop lying in front of the line of dead centre for the swing of the short arm of the peripheral canopy-spoke.
According to a further advantageous refinement, the umbrella may be particularly compactly folded together if the inner canopy strut exhibits a profile of U-section opening outwards towards the canopy cover, for receiving the supporting strut in the shortened state of the umbrella, and, preferably the supporting strut as well as the control strut consist of hollow U-profiles arranged the other way round.
Another operationally favourable refinement may be achieved if the scissor-hinge between the inner canopy strut and the supporting strut is arranged off-centre from the latter and the latter at its end connected to the short arm of the peripheral canopy-spoke is provided with a knee bent towards the control strut.
Preferably, the inner canopy spoke has, in the direction from the crown towards its scissors handle, a steadily -thickening profile.
A particularly s-tress-resistant hinge connection of the scissors drive may be achieved, if the inner canopy spoke engages by a bearing tongue on the scissors hinge with ~5~ ~
a forked tongue arranged on the supporting strut and the forked tongue is flanked by -the fork.
In this case a simplification in production technique may be achieved if the fork is formed from two flank pieces.
The invention will now be explained in greater detail by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows a umbrella with a frame in accordance with the invention in the folded-toge-ther state;
Figure 2 is a detail on an enlarged scale of the scissors-hinge region of the canopy linkage;
Figure 3 shows half of -the umbrella in the stretched state, seen from the side;
Figure 4 shows, the umbrella in the same view but with the canopy turned inside out upwards parabolically by a gust of wind;
Figure 5 is a detail on an enlarged scale of the region of the outer short link of the link quadrilateral of the canopy struts, considered from above;
Figure 6 shows the same outer region of the link quadrilateral in an enlarged side elevation;
Figure 7 shows half of the umbrella seen from the side in the intermediate phase between the state turned 2S inside out upwards and the state relieved of stress, being turned back downwards; and Figure 8 is an enlarged detail of another variant upon the scissors-hinge region.
The umbrella has a stick 1 which preferably consists of a number of parts which can be telescoped into one another. At the bottom end of the stick 1 is fastened a handle, which is not shown, and at the top end of the stick 1 a crown 2. A slider 3 can be shifted up and down -the stick 1 and, at least in the uppermost end position with the umbrella canopy opened as may be seen from Figures 3 and ~, can be fixed by a catch 5 provided with a push-button 4. By means of the slider 3 the canopy of the umbrella, of which for the sake of clarity merely one half is illustrated, can be opened by shifting the sliders towards the crown 2 and vice versa.
The canopy of the umbrella consists of a number of forks hinged pivotally in the shape of a star onto the crown 2 and onto the slider 3 and a canopy cover 6 carried by them. The forks of which merely one is illustra-ted, exhibit respectively an inner canopy strut 7 hinged onto the crown 2 and a supporting strut 8 hinged onto the slider 3. The latter and the inner canopy strut 7 are pivoted together, crossing over one another by a scissors-hinge 9 and accordin~ly form a scissors lever drive which by means of the slider 3 can be folded together (Figure 1) and spread apart (Figures 3 and 4). The inner canopy strut 7 and the supporting strut 8 consist of rods having a U-profile, the open troughs of which face the canopy cover 6. The scissors-hinge 9 lies in a fork 7a on the inner canopy spoke 7, which has been produced by stamping out the bottom of the U-profile and supports the supporting strut 8, guiding it laterally. The fork 7a extends along the whole length of a short scissors handle 7b of the inner canopy strut 7 and is in practice identical with this short scissors handle 7b, whilst the part of the supporting strut 8 extending beyond the scissors-hinge 9 forms a long scissors arm 8a. The supporting strut 8 is journalled in the fork 7a in a tongue 8c shaped a-t one side of its top edge 8b, -that is, offcentre and at the end of its scissors arm 8a runs out into a knee 8d pointing downwards.
If the scissors handle 7b of the inner canopy strut 7 is made as a knee and the U-profile of this canopy strut has a wlder trough than the profile of the supporting L~ Q~
strut 8, -the scissors arm 8a of -the latter can in the folded-together position of the umbrella in accordance with Figure 1, swing into the inner canopy strut 7 like a box into its lid and the remaining parts of the fork lie flush against the inner canopy strut 7. A folding of the folded-together umbrella which is flush with the stick and narrow in cross-section can accordingly be achieved. Furthermore the inner canopy strut 7 may as illustrated be so constituted that the longitudinal flanges 7c at the sides of its profile, extending from the crown 3 towards the scissors handle 7b, become steadily wider or respectively taper out.
The inner canopy strut 7 thereby has over the length of it an unequal moment of inertia, with the effect that the moment of resistance too remains designed to correspond with its loading or respectively the stress acting upon it remains correspondingly equal to the unequal cross-section.
The previously described scissors lever drive of the respective forks actuates a link parallelogram or at least a link quadrilateral P which in turn folds a peripheral canopy-spoke 10 to rest against the link quadrilateral P in the folded-together position in accordance with Figure 1, or folds it away from the link quadrilateral P into the opened position of the umbrella canopy in accordance with Figures 3 and 4. The peripheral canopy-spoke 10 which preferably consists of wire which can bend in all directions, forms in combination with the canopy cover 6 resting against it, the parabolic outer contour of the umbrella canopy. The canopy cover 6 is stitched at the ends of the peripheral canopy-spokes 10 on-to tips lOb, is fastened by a stitched connection 6a onto a short arm lOa of the peripheral canopy spokes 10, is connected by means of a thread or a loop 6b to the inner canopy s-trut 7 and at the centre of -the canopy is fixed between the crown 2 and a cap 20 mounted on it. Between the crown 2 and the stitched connection 6a the canopy cover 6 stretches across the scissors lever drive 7, 8 and the link quadrilateral. P
unsupported in a straight run with the canopy opened. The thread or the loop 6b is adapted in length to this run.
The long links of the link parallelogram or link quadrila-teral P are formed by the scissors arm 8a and by a control stru-t 11, whilst the short lengths are provided by the scissors handle 7b of the inner canopy strut 7 and the short arm lOa of the peripheral canopy-spoke 10. In this case the scissors arm 8a is the upper long link, the control strut ll is the lower long link lying below it, -the scissors handle 7b is the inner short link and the short arm lOa is the outer short link of the link quadril.ateral P. The scissors handle 7b is connec-ted by a hinge 12 to the short arm lOa, and the latter is connected to the control strut 11 by a hinge 13 and the control strut 11 again is connected to the forked scissors handle 7b by a hinge 14.
At the hinge 14 the control strut 11 is journalled in the fork 7a of the scissors handle 7b so that it is guided lateral]y, whilst at the other end, by means of a fork lla, it embraces the short arm lOa of the peripheral canopy spoke 10 at the hinge 13 so that it is guided laterally. The short arm lOa of the peripheral canopy-spoke lO in turn embraces the scissors arm 8a at its knee 8d by means of a fork lOa' so that it is guided laterally, whilst the scissors arm 8a itself has the same lateral guidance at the scissors hinge 9 in the fork 7a of ~ ~
~2L.~3L~
the 6ci~sors handle 7b. These later~lly guided ~inge connections ena~le an accurate congruent aliyn~ent of the ~cissors leYer drive 7, 8 of the link parallelogram P and of the peripheral ~anopy-~poke 10 in all phaRe~ of ~o~ement and po~itions~ The control strut 11 preferably consist~ al~o of a rod having a IJ-profile the open trough of which faces the scissors ar~ 8a arranged above it.
The previously described arrangement and construction is as a whole ~uch that upon fihifting of the ~lider 3 in the opening sense, out of the position in accordance with Figure 1 in the direction outwards towards the crown 2, the sci~sors lever drive 7, 8 is ~pread apart. Thi~ in turn first of all opens the link parallelogram or the link quadrilateral P over the intermediate phase, ~ay, in accordance with Figure 7, and after that clo~es it again a~ far as the ~locking position. whlc~ ~ay be ~een ~rom Figure 3 with the links lying again~t or in one another to ~uch an e$tent that the ~inge 14 ~onnecting the inner canopy ~trut 7 at its ~ci~ors handle 7b (the short inner link) to the ~ontrol trut 11 (the lvwer long link) is lying in the closest possible proxi~ity with re~pect to the line of dead ~5 centre i.e. the diagonal D of the link parallelogram i P quite ~ear to the ~upporting ~trut 8 at its bottom edge Be, or by swinging further clockwi~e rest~
against it with the formation of a bearing stop A' whilst the hinge 12 connecting the supporting strut 8 at its Rcissors arm 8a (the upp~r long link) to the ~hort ar~ lOa (the short outer link) approaches the top edge llb of the control strut 11 anticlockwise until it adopts from above with respect to the line of dead centre, i.e~ the diagonal D/ a di~tance a~out equal to the aistance of pro~imity of the hinge 14, and the link parallelogram or link quadrilateral P
appear6 aR a flat-pre~sed triangular for~ation ~. This ~ormation T shows an obtuse outer angle~ and forms a
~ ~5~ ~
the inner canopy strut to the control strut adopts from below the diagonal.
In this way an umbrella is created, having essentially link parallelogram kinematics moved by a scissor lever-drive, of the kind described, which withstandseven high wind forces and which, in the event that, through excessively high strain pressure, resulting from gusts of wind, the canopy does indeed turn inside out upwards, bu-t it does not then become deformed or destroyed. This results from the closely adjacent positioning effected with the canopy open, of the hinge between the scissors handle of the inner canopy strut and the supporting strut, just underneath the line of dead centre, iOe. the diagonal of the linkage as well as from the association of the hinge between the short arm of the peripheral canopy spoke and the supporting strut at about the same short distance with respect to this diagonal line. From that there results an opened canopy shape, the scissors lever arms and link parallelogram of which appear rather like a flat triangular formation which braces itself mutually in a stabilizing manner up to a blocking position with the parts lying largely against or even in one another. If the canopy, nevertheless, does turn inside out because of far too strong a wind pressure, the link of each guadrilateral forming the scissors lever arm integrated into it, comes to lie just in front of the aforesaid diagonal, entirely in the locking position against or in one another, along with a brief buckling (resulting inter alia from the bending strain in the parts and through the play in the hinge bearings) of the outer side of the links which has not yet completely come up to a stop against the control strut with the formation of a second fixed stop.
Through these two fixed stops a total blocking position results and largely a self-s-tabilization of the middle region of -the canopy, which is in danger of deformation or ~L 2 L.7~ S ~
rupture, with the consequence that considerable tensile forces are led away into -the less endangered flexible outer region of the canopy. The residual buckling of the outer side of the links for formation of the second stop and the S completed locked bearing position is effected gently via swing of only a few degrees by the short arm of the peripheral canopy spoke. The residual s-tress movement of the fork mechanism in the middle region of the canopy upon the dome of the canopy becoming inverted upwards is therefore kept as small as possible. Since the blocking position is effected in front of the aforesaid diagonal line, a sideways twist through, and shearing out of line of, -the links is at the same time avoided and thereby finally once again deformation or destruction of -the canopy spoke or of its hinge. Through the aforesaid design and arrangement of the canopy kinematics the latter may, in particular, through the aforesaid dead-centre stabilization stops and bearings, one more without excessive stress or deformation or rupture, and simply through pulling down the umbrella slider on the umbrella stick, be restored out of the upwards inverted doming into the regular canopy doming again. In doing this the length of shift to the covered by the umbrella slider is comparatively short, since the opening scissors action by the inner canopy strut and the supporting strut proceading from it, after a comparatively short moment of overcoming stress, releases the necessary reversal togglepoint of the peripheral canopy spokes via the link quadrilateral lying blocked off in one another. For the realization of the inven-tion, no additional technical outlay is needed as compared with ~he basic concep-ts which may be derived from the old models men-tioned initially.
A particularly s-tress-resistant and operationally reliable refinement of the invention results if the one shor-t link of the link quadrilateral, forming the scissors 5~
handle, consists of a fork which supports and guides the scissor-hinge, the supporting strut and its own connecting hinge; and if the other short link of the link quadrilateral, formed by the short arm of the peripheral canopy-spoke, at one end, by means of a further fork, guides the upper long link of the link quadrilateral to be able to rotate at the hinge, and, at the other end, in its connection to the lower long link quadrilateral, i.e. to the control strut, at the hinge is guided rotatably by a further fork on the outer end of the control strut; and if the latter by its top edge, or by the bottom of its profile, or by indentations, forms a stop lying in front of the line of dead centre for the swing of the short arm of the peripheral canopy-spoke.
According to a further advantageous refinement, the umbrella may be particularly compactly folded together if the inner canopy strut exhibits a profile of U-section opening outwards towards the canopy cover, for receiving the supporting strut in the shortened state of the umbrella, and, preferably the supporting strut as well as the control strut consist of hollow U-profiles arranged the other way round.
Another operationally favourable refinement may be achieved if the scissor-hinge between the inner canopy strut and the supporting strut is arranged off-centre from the latter and the latter at its end connected to the short arm of the peripheral canopy-spoke is provided with a knee bent towards the control strut.
Preferably, the inner canopy spoke has, in the direction from the crown towards its scissors handle, a steadily -thickening profile.
A particularly s-tress-resistant hinge connection of the scissors drive may be achieved, if the inner canopy spoke engages by a bearing tongue on the scissors hinge with ~5~ ~
a forked tongue arranged on the supporting strut and the forked tongue is flanked by -the fork.
In this case a simplification in production technique may be achieved if the fork is formed from two flank pieces.
The invention will now be explained in greater detail by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows a umbrella with a frame in accordance with the invention in the folded-toge-ther state;
Figure 2 is a detail on an enlarged scale of the scissors-hinge region of the canopy linkage;
Figure 3 shows half of -the umbrella in the stretched state, seen from the side;
Figure 4 shows, the umbrella in the same view but with the canopy turned inside out upwards parabolically by a gust of wind;
Figure 5 is a detail on an enlarged scale of the region of the outer short link of the link quadrilateral of the canopy struts, considered from above;
Figure 6 shows the same outer region of the link quadrilateral in an enlarged side elevation;
Figure 7 shows half of the umbrella seen from the side in the intermediate phase between the state turned 2S inside out upwards and the state relieved of stress, being turned back downwards; and Figure 8 is an enlarged detail of another variant upon the scissors-hinge region.
The umbrella has a stick 1 which preferably consists of a number of parts which can be telescoped into one another. At the bottom end of the stick 1 is fastened a handle, which is not shown, and at the top end of the stick 1 a crown 2. A slider 3 can be shifted up and down -the stick 1 and, at least in the uppermost end position with the umbrella canopy opened as may be seen from Figures 3 and ~, can be fixed by a catch 5 provided with a push-button 4. By means of the slider 3 the canopy of the umbrella, of which for the sake of clarity merely one half is illustrated, can be opened by shifting the sliders towards the crown 2 and vice versa.
The canopy of the umbrella consists of a number of forks hinged pivotally in the shape of a star onto the crown 2 and onto the slider 3 and a canopy cover 6 carried by them. The forks of which merely one is illustra-ted, exhibit respectively an inner canopy strut 7 hinged onto the crown 2 and a supporting strut 8 hinged onto the slider 3. The latter and the inner canopy strut 7 are pivoted together, crossing over one another by a scissors-hinge 9 and accordin~ly form a scissors lever drive which by means of the slider 3 can be folded together (Figure 1) and spread apart (Figures 3 and 4). The inner canopy strut 7 and the supporting strut 8 consist of rods having a U-profile, the open troughs of which face the canopy cover 6. The scissors-hinge 9 lies in a fork 7a on the inner canopy spoke 7, which has been produced by stamping out the bottom of the U-profile and supports the supporting strut 8, guiding it laterally. The fork 7a extends along the whole length of a short scissors handle 7b of the inner canopy strut 7 and is in practice identical with this short scissors handle 7b, whilst the part of the supporting strut 8 extending beyond the scissors-hinge 9 forms a long scissors arm 8a. The supporting strut 8 is journalled in the fork 7a in a tongue 8c shaped a-t one side of its top edge 8b, -that is, offcentre and at the end of its scissors arm 8a runs out into a knee 8d pointing downwards.
If the scissors handle 7b of the inner canopy strut 7 is made as a knee and the U-profile of this canopy strut has a wlder trough than the profile of the supporting L~ Q~
strut 8, -the scissors arm 8a of -the latter can in the folded-together position of the umbrella in accordance with Figure 1, swing into the inner canopy strut 7 like a box into its lid and the remaining parts of the fork lie flush against the inner canopy strut 7. A folding of the folded-together umbrella which is flush with the stick and narrow in cross-section can accordingly be achieved. Furthermore the inner canopy strut 7 may as illustrated be so constituted that the longitudinal flanges 7c at the sides of its profile, extending from the crown 3 towards the scissors handle 7b, become steadily wider or respectively taper out.
The inner canopy strut 7 thereby has over the length of it an unequal moment of inertia, with the effect that the moment of resistance too remains designed to correspond with its loading or respectively the stress acting upon it remains correspondingly equal to the unequal cross-section.
The previously described scissors lever drive of the respective forks actuates a link parallelogram or at least a link quadrilateral P which in turn folds a peripheral canopy-spoke 10 to rest against the link quadrilateral P in the folded-together position in accordance with Figure 1, or folds it away from the link quadrilateral P into the opened position of the umbrella canopy in accordance with Figures 3 and 4. The peripheral canopy-spoke 10 which preferably consists of wire which can bend in all directions, forms in combination with the canopy cover 6 resting against it, the parabolic outer contour of the umbrella canopy. The canopy cover 6 is stitched at the ends of the peripheral canopy-spokes 10 on-to tips lOb, is fastened by a stitched connection 6a onto a short arm lOa of the peripheral canopy spokes 10, is connected by means of a thread or a loop 6b to the inner canopy s-trut 7 and at the centre of -the canopy is fixed between the crown 2 and a cap 20 mounted on it. Between the crown 2 and the stitched connection 6a the canopy cover 6 stretches across the scissors lever drive 7, 8 and the link quadrilateral. P
unsupported in a straight run with the canopy opened. The thread or the loop 6b is adapted in length to this run.
The long links of the link parallelogram or link quadrila-teral P are formed by the scissors arm 8a and by a control stru-t 11, whilst the short lengths are provided by the scissors handle 7b of the inner canopy strut 7 and the short arm lOa of the peripheral canopy-spoke 10. In this case the scissors arm 8a is the upper long link, the control strut ll is the lower long link lying below it, -the scissors handle 7b is the inner short link and the short arm lOa is the outer short link of the link quadril.ateral P. The scissors handle 7b is connec-ted by a hinge 12 to the short arm lOa, and the latter is connected to the control strut 11 by a hinge 13 and the control strut 11 again is connected to the forked scissors handle 7b by a hinge 14.
At the hinge 14 the control strut 11 is journalled in the fork 7a of the scissors handle 7b so that it is guided lateral]y, whilst at the other end, by means of a fork lla, it embraces the short arm lOa of the peripheral canopy spoke 10 at the hinge 13 so that it is guided laterally. The short arm lOa of the peripheral canopy-spoke lO in turn embraces the scissors arm 8a at its knee 8d by means of a fork lOa' so that it is guided laterally, whilst the scissors arm 8a itself has the same lateral guidance at the scissors hinge 9 in the fork 7a of ~ ~
~2L.~3L~
the 6ci~sors handle 7b. These later~lly guided ~inge connections ena~le an accurate congruent aliyn~ent of the ~cissors leYer drive 7, 8 of the link parallelogram P and of the peripheral ~anopy-~poke 10 in all phaRe~ of ~o~ement and po~itions~ The control strut 11 preferably consist~ al~o of a rod having a IJ-profile the open trough of which faces the scissors ar~ 8a arranged above it.
The previously described arrangement and construction is as a whole ~uch that upon fihifting of the ~lider 3 in the opening sense, out of the position in accordance with Figure 1 in the direction outwards towards the crown 2, the sci~sors lever drive 7, 8 is ~pread apart. Thi~ in turn first of all opens the link parallelogram or the link quadrilateral P over the intermediate phase, ~ay, in accordance with Figure 7, and after that clo~es it again a~ far as the ~locking position. whlc~ ~ay be ~een ~rom Figure 3 with the links lying again~t or in one another to ~uch an e$tent that the ~inge 14 ~onnecting the inner canopy ~trut 7 at its ~ci~ors handle 7b (the short inner link) to the ~ontrol trut 11 (the lvwer long link) is lying in the closest possible proxi~ity with re~pect to the line of dead ~5 centre i.e. the diagonal D of the link parallelogram i P quite ~ear to the ~upporting ~trut 8 at its bottom edge Be, or by swinging further clockwi~e rest~
against it with the formation of a bearing stop A' whilst the hinge 12 connecting the supporting strut 8 at its Rcissors arm 8a (the upp~r long link) to the ~hort ar~ lOa (the short outer link) approaches the top edge llb of the control strut 11 anticlockwise until it adopts from above with respect to the line of dead centre, i.e~ the diagonal D/ a di~tance a~out equal to the aistance of pro~imity of the hinge 14, and the link parallelogram or link quadrilateral P
appear6 aR a flat-pre~sed triangular for~ation ~. This ~ormation T shows an obtuse outer angle~ and forms a
3 ~
.
~pact combination with integrated scissor~ ar~s 7b and Ba of the ~cis~or~ leves drive 7, 8. The bearing stop A' can al~o be achieved by the inner end of the control strut 11 resting again~t a bottom edge 8e of the supporting ~trut 8. If the ~inge 14 comes to rest directly against the bottom edge 8e, the inner end of the control strut 11, with its U-profile open upward6, can also allow the bottom edge to dip a little into the trough of the profile and let the formation T, with its obtu~e-angled outerside defined by the arm lOa, appear still ~ore obtuse and diminished. This compact combination of driving scissors and link parallelogram enable~ optimum stabilization of the canopy in it~ central region ~hich is especially endangered by deformation or rupture, in particular in the case of excessive stresses and distortions originating from wind forces.
If the~e e~cessive stres~e~ increa~e ~o ~uch that turning Df the eanopy do~ing insiae out upward~
occur~, a~ ~hown in Figure 4, t~e outer ~hort link e~bodied in the short arm lOa of the peripheral canopy spoke 10 folds through thP remaining few degrees of ~learance towards the top edge llb of the control strut 11, with ~he formation cf a second bearing stop A" against the control strut 11, 50 that the link parallelogram or link quadrilateral P adopts a completely blocking position in a~sociation with the scissors lever drive, with the formation of two stabilizing bearing stops A' and A". Because of this stabilization considerable tensile forces on the middle region of the umbrella canopy, which is in danger of deformation or rupture, get deflected into the outer region of the flexible peripheral canopy spokes 10 with the final effect of considerable pro~ec~ion of the middle region supported by the fiCi3sors lever drive 7, 8 and the link p~rallelogram P. The bearing stops A' and ~' algo guard again~t \
the risk of a buckling-through, or a sideways shearing out of line of, the parallelogram links and a thereby possible deformation or destructionof these parts or their hinges.
Finally this special mechanism fur-ther makes it possible to restore the inverted and strained canopy by pulling the slider 3 down in the direction of the arrow R in Figure 7, as gently as possible into the regular doming once more.
The stress movement to be covered in that case in overcoming the strain (arrow S) is, when measured at the displacement (arrow R) of the slider 3, comparatively short.
The bearing stop A" can be effected by the short arm lOa of the peripheral canopy spoke 10 coming up against the top edge llb of the control strut 11 or against lobes, bosses or indentations llc, etc formed on it and/or against the web lld at the bottom of the U-profile of the control strut 11 (Figure 6). The line of dead centre, or the diagonal D in the link parallelogram or the link quadrilateral P, indicated in dash-dot line in Figures 3, 4 and 6 follows from the diagonal drawn between the hinges 9 and 13. The canopy cover 6 may, if the inner canopy strut 7 is open in i~s profiling towards the canopy cover 6, upon folding of the umbrella together, be drawn in and folded in by the threads or loops 6b in such a way between the scissors arm 8a and the inner canopy strut 7 that it finds room in the cavity in the canopy strut 7 together with the scissors arm 8a nesting into it, and thus the folded-toge-ther umbrella in its cross-section may be shaped into a small volume. This nesting of the scissors arm 8a inside the canopy strut 7 naturally~presupposes a correspondingly thinner cross-section of the supporting strut 8 as also the possible sligh-t mating of the control strut 11 and the scissors arm 8a in the previously described blocking position oE the 1~59 ~S
linX parallel~gr~m P i~plies at lea~t in cro~s-~ection the ~ame hollow profil~ with open troughs facing upwards, of the partg 8 and 11.
Instead of a U-~haped profil~ng of the cross-section the part~ of the canopy linkage nay al~o have other known hollow profiling~ and/or as i3 likewi~e known, ~ay consist of round or flat struts arranged in parallel side by ~ide.
The bearing connection between the inner canopy spoke 7 and the supporting strut 8 at the scis~ors hinge 9 may be designed to be particularly re~i~tant to loading if the inner canopy strut 7 eng~ges at the scissors hinge 9 also in a forked tongue 8c' on the supporting ~trut 8. Thi~ is in turn flanked on both sides by the fork 7a as ~ay be ~een from Figure B, ~o that the two parts 7 and 8 ha~e a aouble hinging and guidance again~t one ~nother. ~he fork 7a ~ay be a Aeparate part ~ixed to the ~nner ~anopy spoke 7 or else consist of separate ~nd appropriat~ly fixed flank part~ 7a', 7a'. The int~iate arranged fork t~
8c' may be formed on an U-shaped insert 8c" fixed within the hollow pro~iling of the supporting strut8,for ~ mple by lugs 80. The flank parts 7a',7a' may be fixed to the inner canopy strut 7 by a rivet 81. If the inner canopy strut 7 furthermore is hinged by means of tongues 7d, 7d to the scissors hinge 9 a threefold stabilized hlnglngand guidance of the scissors arrangement may be achieved.The tongues 7d,7d are formed by the forked or upset end of the inner canopy strut 7 and may be movable arrangedwithin the both forked tonuues 8c',8c' or more outside, between these tongues and the flank parts 7a',7a'.
.
~pact combination with integrated scissor~ ar~s 7b and Ba of the ~cis~or~ leves drive 7, 8. The bearing stop A' can al~o be achieved by the inner end of the control strut 11 resting again~t a bottom edge 8e of the supporting ~trut 8. If the ~inge 14 comes to rest directly against the bottom edge 8e, the inner end of the control strut 11, with its U-profile open upward6, can also allow the bottom edge to dip a little into the trough of the profile and let the formation T, with its obtu~e-angled outerside defined by the arm lOa, appear still ~ore obtuse and diminished. This compact combination of driving scissors and link parallelogram enable~ optimum stabilization of the canopy in it~ central region ~hich is especially endangered by deformation or rupture, in particular in the case of excessive stresses and distortions originating from wind forces.
If the~e e~cessive stres~e~ increa~e ~o ~uch that turning Df the eanopy do~ing insiae out upward~
occur~, a~ ~hown in Figure 4, t~e outer ~hort link e~bodied in the short arm lOa of the peripheral canopy spoke 10 folds through thP remaining few degrees of ~learance towards the top edge llb of the control strut 11, with ~he formation cf a second bearing stop A" against the control strut 11, 50 that the link parallelogram or link quadrilateral P adopts a completely blocking position in a~sociation with the scissors lever drive, with the formation of two stabilizing bearing stops A' and A". Because of this stabilization considerable tensile forces on the middle region of the umbrella canopy, which is in danger of deformation or rupture, get deflected into the outer region of the flexible peripheral canopy spokes 10 with the final effect of considerable pro~ec~ion of the middle region supported by the fiCi3sors lever drive 7, 8 and the link p~rallelogram P. The bearing stops A' and ~' algo guard again~t \
the risk of a buckling-through, or a sideways shearing out of line of, the parallelogram links and a thereby possible deformation or destructionof these parts or their hinges.
Finally this special mechanism fur-ther makes it possible to restore the inverted and strained canopy by pulling the slider 3 down in the direction of the arrow R in Figure 7, as gently as possible into the regular doming once more.
The stress movement to be covered in that case in overcoming the strain (arrow S) is, when measured at the displacement (arrow R) of the slider 3, comparatively short.
The bearing stop A" can be effected by the short arm lOa of the peripheral canopy spoke 10 coming up against the top edge llb of the control strut 11 or against lobes, bosses or indentations llc, etc formed on it and/or against the web lld at the bottom of the U-profile of the control strut 11 (Figure 6). The line of dead centre, or the diagonal D in the link parallelogram or the link quadrilateral P, indicated in dash-dot line in Figures 3, 4 and 6 follows from the diagonal drawn between the hinges 9 and 13. The canopy cover 6 may, if the inner canopy strut 7 is open in i~s profiling towards the canopy cover 6, upon folding of the umbrella together, be drawn in and folded in by the threads or loops 6b in such a way between the scissors arm 8a and the inner canopy strut 7 that it finds room in the cavity in the canopy strut 7 together with the scissors arm 8a nesting into it, and thus the folded-toge-ther umbrella in its cross-section may be shaped into a small volume. This nesting of the scissors arm 8a inside the canopy strut 7 naturally~presupposes a correspondingly thinner cross-section of the supporting strut 8 as also the possible sligh-t mating of the control strut 11 and the scissors arm 8a in the previously described blocking position oE the 1~59 ~S
linX parallel~gr~m P i~plies at lea~t in cro~s-~ection the ~ame hollow profil~ with open troughs facing upwards, of the partg 8 and 11.
Instead of a U-~haped profil~ng of the cross-section the part~ of the canopy linkage nay al~o have other known hollow profiling~ and/or as i3 likewi~e known, ~ay consist of round or flat struts arranged in parallel side by ~ide.
The bearing connection between the inner canopy spoke 7 and the supporting strut 8 at the scis~ors hinge 9 may be designed to be particularly re~i~tant to loading if the inner canopy strut 7 eng~ges at the scissors hinge 9 also in a forked tongue 8c' on the supporting ~trut 8. Thi~ is in turn flanked on both sides by the fork 7a as ~ay be ~een from Figure B, ~o that the two parts 7 and 8 ha~e a aouble hinging and guidance again~t one ~nother. ~he fork 7a ~ay be a Aeparate part ~ixed to the ~nner ~anopy spoke 7 or else consist of separate ~nd appropriat~ly fixed flank part~ 7a', 7a'. The int~iate arranged fork t~
8c' may be formed on an U-shaped insert 8c" fixed within the hollow pro~iling of the supporting strut8,for ~ mple by lugs 80. The flank parts 7a',7a' may be fixed to the inner canopy strut 7 by a rivet 81. If the inner canopy strut 7 furthermore is hinged by means of tongues 7d, 7d to the scissors hinge 9 a threefold stabilized hlnglngand guidance of the scissors arrangement may be achieved.The tongues 7d,7d are formed by the forked or upset end of the inner canopy strut 7 and may be movable arrangedwithin the both forked tonuues 8c',8c' or more outside, between these tongues and the flank parts 7a',7a'.
Claims (9)
1. A shortenable umbrella having a stick with a fixed crown, a slider fixable in an uppermost position by a catch, whereby a free shifting path extends between the uppermost arrested slider and the crown, and a plurality of inner canopy struts each hinged at an inner end thereof to said crown, each of said inner canopy struts crossing, and being connected by a scissors hinge to, a respective supporting strut which is hinged at an inner end thereof to said slider, a scissors handle portion of each of said inner canopy struts extending outwards beyond said scissors hinge and being hinged to an inner end of a respective control strut which extends outwards beneath a respective one of said supporting struts, and a plurality of peripheral canopy spokes each of which is hinged to an outer end of a respective one of said control struts and has, inwardly of this latter hinge, a short arm hinged to an outer end of a respective one of said supporting struts, whereby said scissors handle and short arm form short links, and said control strut and a portion of said supporting strut above said control strut form long links, of a link quadrilateral;
wherein said hinge connecting each of said inner canopy struts to said respective control strut lies, in the opened position of said frame, adjacent to the diagonal through said scissors hinge of said link quadrilateral and lies adjacent to a bottom edge bearing stop of said respective supporting strut so that each of said link quadrilaterals lies blocked off and stiffened and appears as a triangle with an obtuse angle adjacent to said hinge connecting said supporting strut and said short arm, and said hinge con-necting said supporting strut to said short arm is spaced substantially the same distance above said diagonal as said hinge connecting said inner canopy strut to said control strut is spaced below said diagonal.
wherein said hinge connecting each of said inner canopy struts to said respective control strut lies, in the opened position of said frame, adjacent to the diagonal through said scissors hinge of said link quadrilateral and lies adjacent to a bottom edge bearing stop of said respective supporting strut so that each of said link quadrilaterals lies blocked off and stiffened and appears as a triangle with an obtuse angle adjacent to said hinge connecting said supporting strut and said short arm, and said hinge con-necting said supporting strut to said short arm is spaced substantially the same distance above said diagonal as said hinge connecting said inner canopy strut to said control strut is spaced below said diagonal.
2. An umbrella according to claim 1, charac-terized in that said scissors handle consists of a fork which supports and guides said scissors-hinge, and said supporting strut; that said short arm at one end, by means of a further fork, guides said hinging of said upper long link of said link quadrilateral, and, at the other end, in said hinged connection thereof to said lower long link of said link quadrilateral is guided by a further fork on said outer end of said control strut; and that said control strut forms a stop for the swinging of said short arm.
3. An umbrella according to claim 2, wherein each of said inner canopy spokes engages, via a bearing tongue at said scissors hinge, with a forked tongue arranged on said respective supporting strut; and said forked tongue is flanked by said fork.
4. An umbrella according to claim 2, wherein said fork is formed from two flank pieces.
5. An umbrella according to claim 1, wherein each of said inner canopy struts has a hollow profile of U-section, facing outwards, for receiving said respective supporting strut in the closed state.
6. An umbrella according to claim 5, wherein said supporting strut and said control strut also have hollow profiles of U-section.
7. An umbrella according to claim 1, where said scissors-hinge is arranged off-centre from the respective one of said supporting struts, the end of which connected to said short arm is provided with a knee bent towards said control strut.
8. An umbrella according to claim 1, wherein said inner canopy spoke has, in the direction from said crown towards said respective scissors handle, a steadily thicken-ing profile.
9. A shortenable umbrella, incorporating a frame according to claim 1, 2 or 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3504844.1 | 1985-02-13 | ||
| DE19853504844 DE3504844A1 (en) | 1985-02-13 | 1985-02-13 | CURVABLE UMBRELLA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1245945A true CA1245945A (en) | 1988-12-06 |
Family
ID=6262370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000481079A Expired CA1245945A (en) | 1985-02-13 | 1985-05-08 | Shortenable umbrella |
Country Status (10)
| Country | Link |
|---|---|
| CA (1) | CA1245945A (en) |
| CH (1) | CH666799A5 (en) |
| DD (1) | DD238194A5 (en) |
| DE (1) | DE3504844A1 (en) |
| ES (1) | ES8703259A1 (en) |
| FR (1) | FR2577122B1 (en) |
| GB (1) | GB2170704B (en) |
| HK (1) | HK87490A (en) |
| IT (1) | IT1185623B (en) |
| PT (1) | PT80677B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2041318A1 (en) * | 1990-04-30 | 1991-10-31 | Sheng-Fu Huang | Rib joint structure for an umbrella |
| CA2042774A1 (en) * | 1990-05-26 | 1991-11-27 | Sheng-Fu Huang | Rib linkage joint |
| DE4020679C2 (en) * | 1990-06-29 | 1994-04-28 | Kortenbach Verwaltung | Folding umbrella with a telescopic pole and a collapsible roof frame |
| GB2261601A (en) * | 1991-11-25 | 1993-05-26 | Totes Inc | Wind invertible umbrella rib linkage system |
| USRE39467E1 (en) * | 1997-12-18 | 2007-01-16 | Bendix Commercial Vehicle Systems Llc | Air dryer reservoir module components |
| DE10304391B3 (en) * | 2003-02-04 | 2004-08-26 | Ernst Doppler & Co Gmbh | standing umbrella |
| CN103494398A (en) * | 2013-08-30 | 2014-01-08 | 陈雪松 | Child shoe |
| CN107865498B (en) * | 2017-12-05 | 2020-12-25 | 浙江腾鑫伞业有限公司 | Umbrella capable of being combined into walking stick |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US177339A (en) * | 1876-05-16 | Improvement in folding umbrellas | ||
| US2215738A (en) * | 1938-01-26 | 1940-09-24 | Kohler Eduard | Umbrella frame |
| DE2129265C3 (en) * | 1971-06-12 | 1980-03-20 | Kortenbach & Rauh Kg, 5650 Solingen | Pocket umbrella |
| JPS6098418U (en) * | 1983-12-12 | 1985-07-04 | 奥田 敏夫 | Western umbrella |
| DE8504176U1 (en) * | 1985-02-14 | 1985-05-30 | Fu Tai Umbrella Works, Ltd., Taipei | Collapsible, tipless umbrella |
-
1985
- 1985-02-13 DE DE19853504844 patent/DE3504844A1/en active Granted
- 1985-05-01 GB GB8511038A patent/GB2170704B/en not_active Expired
- 1985-05-08 CA CA000481079A patent/CA1245945A/en not_active Expired
- 1985-05-09 CH CH1974/85A patent/CH666799A5/en not_active IP Right Cessation
- 1985-05-17 DD DD85276458A patent/DD238194A5/en not_active IP Right Cessation
- 1985-05-31 IT IT8520984A patent/IT1185623B/en active
- 1985-06-05 FR FR858508593A patent/FR2577122B1/en not_active Expired - Fee Related
- 1985-06-20 PT PT80677A patent/PT80677B/en not_active IP Right Cessation
- 1985-12-27 ES ES550486A patent/ES8703259A1/en not_active Expired
-
1990
- 1990-10-25 HK HK874/90A patent/HK87490A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT8520984A0 (en) | 1985-05-31 |
| CH666799A5 (en) | 1988-08-31 |
| GB2170704A (en) | 1986-08-13 |
| ES8703259A1 (en) | 1987-02-16 |
| PT80677A (en) | 1985-07-01 |
| DE3504844A1 (en) | 1986-08-14 |
| DE3504844C2 (en) | 1987-04-23 |
| HK87490A (en) | 1990-11-02 |
| GB8511038D0 (en) | 1985-06-12 |
| ES550486A0 (en) | 1987-02-16 |
| DD238194A5 (en) | 1986-08-13 |
| FR2577122A1 (en) | 1986-08-14 |
| FR2577122B1 (en) | 1990-06-22 |
| PT80677B (en) | 1987-06-17 |
| GB2170704B (en) | 1989-06-07 |
| IT1185623B (en) | 1987-11-12 |
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