EP1781134B1 - Free arm parasol - Google Patents

Abstract

The invention relates to a free arm parasol which comprises a pole (2) whereon an extension arm (10) is guided such that it can be extended and detracted in the direction of the axis thereof, and can pivoted about the axis thereof. The extension arm (10) supports a parasol (12) on the end thereof and is rotationally mounted on the other end in a bearing (14). A carrier element (16), which is connected in an articulated manner to the pole (2), is connected to bearing. Also, a stopping device (24), which is used to stop the pivotable positioning of the extension arm (10), is provided on the bearing (14). Said stopping device comprises a steering bar (26) which is arranged in the extension of the extension arm (10), can be placed counter to the carrier element (16), can be locked to the carrier element (16) and can be pivoted about the axis of the extension arm (10) when in the unlocked state in order to improve the handling of the free arm parasol. Said arm is coupled in a detachable manner to the extension arm by means of a coupling device, according to a selected rotational angle in relation to the extension arm (10).

Description

Technical area

The invention relates to a Freiarmschirm according to the preamble of claim 1.

State of the art

A Freiarmschirm of the type mentioned is from the EP 0 830 074 B known. As a locking device is a split bearing ring of the bearing, on the one hand, the end of the arm is rotatably mounted and on the other hand, the support member is hinged, which in turn is articulated on the mast. To lock the bearing ring is clamped by means of a clamping screw with the boom. A transverse to the boom projecting handle is used to pivot the boom about its axis. The disadvantage is that both the handle and the clamping screw are arranged relatively high above the ground and therefore the accessibility and handling is difficult especially for small people. Moreover, two hands are required to operate and the pivoting of the boom about its axis by means of the handle requires a relatively large force. Finally, the handle projecting transversely to the boom is bulky and makes it difficult to pack the free-arm umbrella for its transport.

From the WO2005 / 018369 is known a free-arm in which a boom is supported on the one hand with one end via a bearing on a longitudinally displaceable along the mast sleeve and on the other hand carries a screen at its free end. In the area between the bearing and the screen, the boom is supported by means of a support element on the upper part of the mast. By moving the sliding sleeve along the mast down, the boom can be folded against the mast. The boom is mounted on the bearing and at the junction of the support member pivotally about its axis. The boom is provided with a handlebar which cooperates with a coupling device and allows locking of the boom in different angles of rotation relative to the bearing. The handlebar is lockable on the mast. The free-arm screen Although easy to handle, since the sliding sleeve and the handlebar are relatively deep, but the operation must be done from the inside of the screen, which is cumbersome and associated with the risk of injury. The Freiarmschirm has in the folded state a large height, which makes the transport of Freiarmschirmes both in the packaged as unpackaged state, especially for transport in passenger cars very difficult.

From the DE 299 06 116 U1 is a Freiarmschirm with a mast known in which is hung on a boom at the top of the screen. The boom is guided axially displaceably in a pivoting guide on the mast. With a handle, the boom can be moved axially in the pivot guide. The boom is provided with a rack which cooperates with a pinion in the pivot guide and serves to lock the extended position of the boom. Thus, it is not possible to pivot the boom in the pivot guide about its axis. For pivoting the screen about the axis of the boom of the screen is arranged on a boom part which is pivotally mounted in the arm about the axis of the boom. To determine the boom part with respect to the boom is a clamping cone in the boom part, which cooperates with a clamping cone in the boom. The clamping cones can be braced against each other by means of a screw spindle. The fact that only the boom part is pivotally mounted in the boom, there is a labile, trouble-prone storage of the boom part, which is also difficult to access because of their arrangement near the crown.

Presentation of the invention

The object of the invention is to improve a Freiarmschirm of the type mentioned.

The object is achieved by the characterizing features of claim 1. The fact that the locking device has an extension of the boom lying, bendable against the support member steering rod, on the one hand locked with the support member and on the other hand in the unlocked state to the Axis of the boom is pivotable and is detachably coupled by means of a coupling device in selectable angles of rotation relative to the boom with the boom, the necessary functions and settings for the Freiarmschirm can be easily and easily perform. The handlebar moves the accessibility of the controls to a lower height from the ground so that they are accessible to smaller people. Moreover, the controls are on the outside of the screen, making the operation more convenient and safer against accident. Due to the given by the handlebar lever arm, the pivoting of the boom about its axis is easier and easier. Since the handlebar on the one hand serves to pivot the boom about its axis and on the other hand to lock the pivot position by locking the handlebar to the support element, there is a significant simplification of the operation, which can also be performed with one hand. But the handlebar also serves to extend and retract the boom along its axis, which also simplifies and facilitates this function of Freiarmschirmes.

Advantageous embodiments of the Freiarmschirmes are described in claims 2 to 12.

Particularly advantageous is the embodiment according to claim 2, according to which the bearing is arranged for the end of the boom in a housing on which on the one hand the support member is articulated and on the other hand, a handlebar supporting the housing part is pivotally mounted about the axis of the boom and in which the coupling device is arranged. As a result, the sensitive parts of the Freiarmschirmes are arranged in a housing which protects the sensitive parts on the one hand from contamination and on the other hand also serves the functional safety and accident prevention. It is thus virtually impossible that an operator may be injured when handling the screen.

Particularly advantageous is the further embodiment of the Freiarmschirmes according to claim 3, according to which the coupling device comprises a first coupling part, but non-rotatably displaceable in the direction of the axis of the boom is arranged at the end of the boom. By means of a spring, the coupling part is biased against a second coupling part, which is connected against rotation with the handlebar. The first coupling part is associated with a pressure piece which can be actuated for releasing the coupling device by means of a cam part on the handlebar when it is swung in a Entkupplungsbereich. Different areas are conceivable for the decoupling area. It is advantageous if the Entkupplungsbereich the handlebar according to claim 4 between the locking position of the handlebar on the support member and extending in the axial direction of the boom stretched position is. Then a disengagement and engagement of the handlebar is given to the boom in good operating height. It is particularly advantageous if, according to claim 5, the steering rod on both sides of the curve part has support surfaces which cooperate with the pressure piece to temporarily fix the handlebar in the positions on both sides of the curve part.

For the coupling device, there are a variety of design options, from the non-positive to the form-fitting design of the coupling. The frictional training allows a great fine adjustment, but requires a relatively large bias of the coupling parts against each other. Therefore, an embodiment of the coupling device according to claim 6 is advantageous, after which this is positively formed and preferably as a toothed coupling.

To avoid malfunction of Freiarmschirmes, it is advantageous if the boom according to claim 7 has a preferably limited by stops pivoting angle.

The function of the Freiarmschirmes is further substantially improved by the formation of the free-arm screen according to claim 8, wherein the boom and the handlebar for guiding a pulling member for opening and closing the screen are hollow. In particular, the embodiment according to claim 9 is advantageous, according to which at the free end of the handlebar a winch for the tension member is present, by means of which the screen can be opened and closed.

The locking of the handlebar to the support element is carried out according to claim 10, preferably by means of a clip, whereby the handlebars on the one hand quickly and easily locked and on the other hand just as quickly and easily the lock can be solved again.

To prevent accidental extension of the boom, the development of Freiarmschirmes claim 11 is advantageous. In this case, the boom is latched in its extended position by means of a detent, which can be solved by means of a release member by hand again. The Freiarmschirm with the extendable and retractable boom and the simple combined controls not only allows easy and easy operation of Freiarmschirmes, but finally allows according to claim 12 also transportable collapsibility to a compact slim package that is so shortened that it especially can be transported in a passenger car.

Brief description of the drawings

Figur 1

eine Freiarmschirm im aufgespannten Zustand in Seitenansicht;

Figur 2

den Freiarmschirm der Figur 1 in zusammengeklapptem Zustand;

Figur 3

den Freiarmschirm der Figur 1 im arretierten Zustand im Ausschnitt, im Vertikalschnitt und in grösserem Masstab;

Figur 4

das freie Ende der Lenkstange mit einer Seilwinde in schaubildlicher, teilweise explodierter Darstellung;

Figur 5

den Freiarmschirm der Figur 3 in weiter vergrössertem Ausschnitt;

Figur 6

das hintere Lager des Auslegers gemäss Figur 5 in teilweise explodierter Darstellung;

Figur 7

den Freiarmschirm der Figur 3 mit gelöster Lenkstange;

Figur 8

den Freiarmschirm der Figur 3 mit gelöster Kupplungsvorrichtung;

Figur 9

den Freiarmschirm der Figur 3 mit in Längsrichtung des Auslegers ausgerichteter Lenkstange;

Figur 10

das Gestell des zusammengelegten und teilweise demontierten Freiarmschirmes der Figur 1 in einer Verpackung; und

Figur 11

den verpackten Freiarmschirm der Figur 10 mit ergänztem Schirm.

Exemplary embodiments of the invention will be described in greater detail below with reference to the drawings, in which:

FIG. 1

a Freiarmschirm in the clamped state in side view;

FIG. 2

the Freiarmschirm the FIG. 1 in the folded state;

FIG. 3

the Freiarmschirm the FIG. 1 in the locked state in the neck, in the vertical section and in a larger scale;

FIG. 4

the free end of the handlebar with a winch in perspective, partially exploded representation;

FIG. 5

the Freiarmschirm the FIG. 3 in a further enlarged section;

FIG. 6

the rear bearing of the boom according to FIG. 5 in partially exploded representation;

FIG. 7

the Freiarmschirm the FIG. 3 with dissolved handlebar;

FIG. 8

the Freiarmschirm the FIG. 3 with dissolved coupling device;

FIG. 9

the Freiarmschirm the FIG. 3 with aligned in the longitudinal direction of the boom steering rod;

FIG. 10

the frame of the collapsed and partially dismantled Freiarmschirmes the FIG. 1 in a package; and

FIG. 11

the packed free-arm screen FIG. 10 with supplemented screen.

Ways to carry out the invention

The FIG. 1 shows a Freiarmschirm in its extended position and with the screen open and the FIG. 2 this Freiarmschirm in the closed and folded position. The Freiarmschirm has a mast 2, which may be anchored in the bottom 4 or a base 6. At the upper end of the mast 2 is on a sliding bearing 8, a boom 10 in its longitudinal direction and retractable and mounted pivotably about its axis. The sliding bearing 8 is pivotally mounted on a mast 9 on the mast 2. At one end of the boom carries a screen 12 and at the other end of the boom 10 is pivotally mounted in a bearing 14 about its axis. The bearing 14 is supported via a support element 16 on the mast 2. For this purpose, the support element 16 is articulated via a joint 18 on the bearing 14 and via a joint 20 on a support sleeve 22 which is arranged on the mast 2. At the bearing 14 is a locking device 24 for locking the pivotal position of the boom 10 in a selectable pivot position available. For this purpose, the locking device is provided with a lying in the extension of the boom 10 handlebar 26 which is articulated against the support member 16 via a hinge 27. The handlebar is latched by means of a locking device 28 with the support member 16. In unlocked state, the handlebar 26 can be pivoted about the axis of the boom and be detachably coupled by means of a coupling device 30 in selectable angles of rotation relative to the boom with the boom, as can be seen from the following embodiments and figures in detail. The handlebar is then also at oblique screen before accident endangered.

How out FIG. 3 shows, the boom 10 by means of a detent 32 which is biased by a spring 34 to the outside, locked in the extended position. By means of a release member 36, by means of a push rod 38 and a not shown handle from an advantageous operating height can be operated, the catch 32 can be pressed against the force of the spring 34, after which the boom 10 in the axial direction in the in FIG. 2 shown folded position is retractable.

The boom 10 and the handlebar 26 are hollow and designed to receive a tension member 40 preferably a rope, which allows in a manner not shown, but known manner, the opening and closing of the screen. In the region of the joint 27 of the handlebar 26 on the bearing 14, a deflecting member 44 is present, which deflects the tension member 40 from the boom 10 in the handlebar 26 and leads to a arranged at the end of the handlebar winch 46. By means of a hand crank 48, the tension member 40 can be wound up to open the screen 12 and unwound to close the screen. On the housing of the winch 46 and a clip 50 of the locking device 24 is arranged, in particular from the FIG. 4 is apparent.

The FIGS. 5 to 9 show the formation of the bearing 14 and the design of the handlebar 26 and the coupling device 30 and their function in detail, the extension and retraction of the boom, the opening and closing of the screen and its inclination to a combined control point in the preferred operating height outside the screen is merged.

The bearing 14 is provided with a housing 52 which is divided in its longitudinal direction and consists of the housing halves 52a and 52b. On the boom 10 bearing rings 54 56 are arranged, which are mounted in corresponding bearing rings 58 60 of the housing 52. At the end of the boom 10, a sleeve 62 is slidably mounted in the axial direction of the arm in this. Grooves 64 on the outside of the sleeve 62 and springs 66 on the inside of the boom 10 ensure a rotationally secure guidance of the sleeve 62 in the boom. An arranged in bores 68 of the boom bolt 70 engages through a longitudinal slot 72 in the sleeve 62 and limits the axial displacement of the sleeve 62. A compression spring 74 is supported on the bolt 70 and serves to bias the sleeve 62 against the handlebar assembly. The sleeve 62 carries a radially projecting Cam 76 which cooperates with stops 78 in the housing 52 and limits the pivot angle of the arm 10 about its axis. Of the stops 78, only one is shown in the housing half 52a. An analog stop is also present in the housing half 52b.

The sleeve 62 is part of the coupling device 30 and includes a first coupling part 80 which cooperates with a second coupling part 82 which is associated with the handlebar 26. The coupling parts 80,82 may be formed positive or non-positive. In the present example, it is a positive coupling device with sprockets having coupling parts 80,82.

The second coupling part 82 is connected against rotation with the handlebar 26. For this purpose, the second coupling part 82 is arranged in a steering member 26 carrying the housing part 84 which is mounted in the housing 52 by means of a bearing 85 about the axis of the boom 10 pivotally. The handlebar 26 is further pivoted about the aligned transversely to the axis of the boom joint 27. The handlebar 26 has an opening of the coupling device 30 causing the cam member 86 which cooperates with a pressure piece 88 which is mounted on a flange 90 of the sleeve 62 which carries the first coupling part 80. On both sides of the cam member 86, the handlebar 26 has support surfaces 92, 94 which cooperate with the pressure piece 88 and the handlebar 26 in the pivoted or swung-out position of the FIGS. 7 or 9 releasably hold.

The FIG. 5 shows the handlebar 26 in the latched state in which the clip 50 of the latching device 28 is latched to the support member 16 so that a pivoting of the handlebar 26 is not possible either about the axis of the arm 10 about the axis of the joint 27. The first coupling part 80 and the second coupling part 82 are locked in this state, so that a pivoting of the arm about its axis and thus the screen is no longer possible.

The FIG. 7 shows the handlebar 26 in the unlatched state, so that the handlebar are pivotable about the axis of the boom. Since the coupling parts 80 82 are engaged, so at the same time the boom can be pivoted about its axis.

To lock the boom in a selected pivot position, the handlebar 26 must first in the in FIG. 8 be shown pivoted by the cam member 86, the pressure member 88 against the force of the spring 66 so far displaced until the first coupling member 80 and the second coupling member 82 are disengaged, as in FIG. 8 is shown.
In this uncoupling position, the handlebar 26 can first be pivoted freely about the axis of the boom, in an angle which is to correspond to the later desired pivot angle of the boom and thus the desired inclination of the screen 12. Then, the handlebar is pivoted back in this pivoted position against the support member and thereby brought the coupling parts 80 and 82 into engagement. Now, by pivoting back the handlebar 26 parallel to the support member 16 of the boom and thus the screen can be brought into the previously desired pivot position. By locking the handlebar 26 by means of the locking device 28 with the support member 16 analogous to the position of FIG. 2 or 5 then the Verschwenklage the boom 10 and thus the screen 12 is secured. The latched to the support member 16 handlebar 26 is thus no longer dangerous across the boom away. The pivoting back of the boom 10 and thus the screen 12 in the in FIG. 1 shown basic position takes place in reverse order of operations.

The FIG. 9 shows the handlebar 26 in a position in which it corresponds to the extension of the extension arm 10 practically. The cooperating with the pressure piece 88 support surface 96 holds the handlebar 26 in the extended position. In this position, the coupling parts are engaged. This position is used primarily for extension and retraction of the boom in the axial direction and the space-saving folding the Freiarmschirmes ( Figures 2 and 11 ).

The FIGS. 10 and 11 show the Freiarmschirm in collapsed and partially disassembled form in a packaging container 96, which serves in particular for the transport and possibly also for the storage of Freiarmschirmes. The screen 12 is removed from the boom 10 and the mast 2 divided into two parts 2a and 2b, which are telescopically plugged into each other. The boom 10, which may also consist of telescopically assembled parts is inserted with the disassembled mast 2 and the support member 16 and the handlebar 26 in the lower part of the packaging container 96, as shown in FIG. 10 is shown. The collapsed screen 12 is laid over in a second layer, as shown FIG. 11 is apparent. If appropriate, the screen can also be connected to the boom in an articulated manner, so that there is no need for removal and the umbrella can be inserted into the packaging container together with the delivery arm. Thus, even a relatively large Freiarmschirm compactly folded and transported in a small space, so that maximum mass, which are currently at a length of 2 meters; for transport by post and / or in a passenger car. The compact packaging also minimizes the risk of damage during transport.

The new free-arm screen shows quite decisive advantages. The controls for extending and retracting the boom, opening and closing and tilting of the screen are also at large umbrellas at comfortable operating height and outside the screen. The extension, opening and tilting and locking in the inclination is summarized in a single control unit, which is given by the handlebar with the winch. The opening and closing of the screen and the extension of the boom can be done simultaneously or independently.

The squat design of the free-arm umbrella on the one hand and the fixation of the joints also results in increased stability and wind stability.

The sensitive drive parts of the Freiarmschirmes, in particular the coupling device and the active parts of the handlebar are housed in a housing, which on the one hand from pollution and weather conditions and on the other hand protects the operator from injury hazards. In addition, the housing allows a rounded design of the free-arm umbrella, which not only improves the appearance of the free-arm screen, but also reduces the risk of injury.

The pivoting of the boom and thus the tilting of the screen causes only an insignificant change in the tension of the tension member, such as the rope when the screen is open.

LIST OF REFERENCE NUMBERS

2

mast

4

ground

6

base

8th

sliding bearings

9

Joint of 8

10

boom

12

umbrella

14

camp

16

supporting member

18

Joint for 14

20

Joint for 2

22

carrying sleeve

24

locking device

26

handlebars

27

Joint of 26

28

locking device

30

coupling device

32

notch

34

feather

36

release member

38

pushrod

40

traction member

44

deflecting

46

winch

48

winch

50

Clip of 28

52

casing

52a

housing half

52b

housing half

54

bearing rings

56

bearing rings

58

bearing ring

60

bearing ring

62

shell

64

groove

66

feather

68

drilling

70

bolt

72

longitudinal slot

74

compression spring

76

cam

78

attack

80

first coupling part

82

second coupling part

84

housing part

85

Stock of 84 in 52

86

curve part

88

Pressure piece

90

flange

92

support surface

94

support surface

96

packaging container

Claims (12)

1. A cantilever parasol, having a mast (2) on which an arm (10) is guided axially retractably and extendably and such that it may pivot about its axis, this arm (10) carrying a parasol (12) at one end and being mounted at the other end such that it may rotate in a bearing (14), to which a carrier element (16) that is connected in articulated manner to the mast (2) is articulated, there furthermore being on the bearing (14) a locking device (24) for locking the pivot position of the arm (10), characterized in that the locking device (24) has a control rod (26) that lies such that it forms an extension to the arm (10), that may be pivoted in relation to the carrier element (16) about an axis transverse to the axis of the arm, and that may on the one hand be latched to the carrier element (16) and may on the other hand, in the unlatched condition, be pivoted about the axis of the arm (10) and is detachably coupled to the arm by means of a coupling device (30) at selectable angles of rotation in relation to the arm (10).
2. The cantilever parasol as claimed in claim 1, characterized in that the bearing (14) for the end of the arm (10) is arranged in a housing (52) on which on the one hand the carrier element (16) is articulated and on the other hand a housing part (84) that carries the control rod (26) is mounted such that it may pivot about the axis of the arm (10), and in which the coupling device (30) is arranged.
3. The cantilever parasol as claimed in claim 1 or 2, characterized in that the coupling device (30) has a first coupling part (80), which is arranged at the end of the arm (10), non-rotatably but slidably in the direction of the axis of the arm (10), and which is pretensioned by means of a spring (66) toward a second coupling part (82) that is connected non-rotatably to the control rod (26), there being associated with the first coupling part (80) a pressure piece (88) that is actuable for the purpose of releasing the coupling device (30) by means of a cam part (86) on the control rod (26) when the latter is pivoted out into an uncoupling region.
4. The cantilever parasol as claimed in claim 3, characterized in that the uncoupling region of the control rod (26) lies between the position in which the control rod (26) is locked on the carrier element (16) and the extended position, which runs in the axial direction of the arm (10).
5. The cantilever parasol as claimed in claim 4, characterized in that the control rod (26) has, on either side of the cam part (86), support faces (92, 94) that cooperate with the pressure piece (88), in order to fix the control rod (26) in the positions on either side of the cam part (86) temporarily.
6. The cantilever parasol as claimed in one of claims 1 to 5, characterized in that the coupling device (30) takes the form of a form-fitting coupling device, preferably a toothed coupling.
7. The cantilever parasol as claimed in one of claims 1 to 6, characterized in that the arm (10) has stops (76, 78) that limit the pivot angle.
8. The cantilever parasol as claimed in one of claims 1 to 7, characterized in that the arm (10) and the control rod (26) are constructed to be hollow for the purpose of guiding a tensor member (40) for opening and closing the parasol (12).
9. The cantilever parasol as claimed in claim 8, characterized in that a cable winder (46) for the tensor member (40) is arranged at the free end of the control rod (26).
10. The cantilever parasol as claimed in one of claims 1 to 9, characterized in that the control rod (26) has a clip (50) for locking the control rod to the carrier element (16).
11. The cantilever parasol as claimed in one of claims 1 to 10, characterized in that the arm (10) may be latched in its extended position by means of a latch (32) that is located in the arm and can be released by means of a release member (36) that is guided through the interior of the mast.
12. The cantilever parasol as claimed in one of claims 1 to 11, characterized in that it may be folded together and shortened by means of the telescopically collapsible arm in a manner suitable for transportation to give a compact, slender package.

Images