EP0358043A2 - Sun shade with a base and a telescopic mast - Google Patents

Abstract

Through a rectified actuation process, a parachute is brought to different altitudes without changing its closed position and opened and closed by reversing the drive. A telescopic rod (3) is displaceably guided in the tubular mast (1) by means of an adjusting device (11, 12), the upper end of which carries a bearing ring (8) on which the locking rods (15) are suspended. Its lower end is closed by an end wall (7), in the nut thread (6) of which a threaded spindle (9) rotatable by a crank (11) engages in a self-locking manner. A bearing collar (17) can be adjusted in height on the tubular mast (1) and can be fixed to it by means of a clutch (5). When the coupling is closed, the spindle (9) changes the distance between the bearing rings (8,17), i.e. the screen is opened or closed. At approximately the smallest opening angle of the roof rods (15), the clutch (5) opens automatically. Then the screen can be raised and lowered without changing its closed position. Since the closing process is also controlled automatically, a change cycle in the opening and lifting area can be controlled automatically by raising or lowering the first bearing ring (8), which simplifies operation and increases operating safety.

Description

The invention relates to a standing umbrella with a telescopic mast, which, like hand-held umbrellas, serves the opening and closing process there and / or is used to adjust the height of the umbrella.

From DE-PS 31 36 357 a standing umbrella with a movable in the longitudinal direction of the mast first bearing ring is known for the roof poles supporting a screen skin, which are supported by a spreading gear with a second bearing ring by struts on the mast and through these struts between the clamping position, Allow the closing and envelope positions to move over a medium clamping position. In this way, the umbrella is opened or closed and simultaneously raised or lowered by an actuating operation in the same direction. In this case and in other known umbrella constructions, the opening position is predetermined by the respective lifting position of the umbrella rod. This contradicts the different requirements of the numerous users.

Although it is known from the French patent specification 12 93 790 a market umbrella with a one-piece mast on which two vertically adjustable bushings with bearing rings ver are slidably and securely attached. In this way, in principle, each screen opening can be set at any height made possible by the mast length. The operation is extremely tedious, so that umbrellas of this type can no longer have.

The invention is based on the umbrella construction defined at the outset and pursues the task of developing this known umbrella in such a way that its operation is simplified and at least the completely closed umbrella can be brought to different altitudes without changing its closed position and can be opened and closed by reversing the drive when the actuating process is directed in the same direction .

• a) in einem Rohrmast ist durch eine Stellvorrichtung verschiebbar ein Teleskopmast geführt,
• b) der fest einen ersten Lagerkranz für in diesem schwenk­bare Dachstangen des selbsthemmend abgestützten Schirmge­stänges trägt;
• c) die Dachstangen sind durch Spreizstreben abgestützt, die in einem am Rohrmast lotrecht verschiebbaren zweiten La­gerkranz gelagert sind,
• d) der am Rohrmast (1) durch eine Schaltkupplung an- und ab­kuppelbar ist,
• e) die mittels der Stellvorrichtung und/oder des Schirmge­stänges in vorgegebener Folge innerhalb eines Verstell­zyklus zu öffnen und zu schließen ist.

According to the invention, a stationary umbrella with the following features is used to achieve this object:

• a) a telescopic mast is slidably guided in a tubular mast by an adjusting device,
• b) which carries a first bearing ring for the self-locking umbrella linkage in this pivotable roof rods;
• c) the roof poles are supported by expansion struts which are mounted in a second bearing ring which can be displaced vertically on the tubular mast,
• d) which can be connected and disconnected from the tubular mast (1) by means of a clutch,
• e) which is to be opened and closed in a predetermined sequence within an adjustment cycle by means of the adjusting device and / or the screen linkage.

What is particularly important here is the triggering device to be actuated by means of the adjusting device or the umbrella rod depending on the direction of movement thereof Bracket of the second bearing ring on the outer mast. During a movement process, for example for lifting into a parking position, the second bearing ring can be fixed on the mast, with the reverse movement for closing the screen from the open position, this connection can be released again without any additional operations having to be carried out.

The actuating device is actuated, for example by means of a crank or by a motor drive in one direction and then in the other. Depending on the design of the adjusting device and the umbrella rod, the opening or closing movement can be carried out with a lowering or lifting process. It is important, however, that the screen cannot carry out any uncontrolled lowering or closing processes during all operating processes. This protection serves, among other things. the self-locking support by the adjusting device or the umbrella rod. As a rule, at least one of the two brackets, usually the lower one, is arranged at a predetermined height. In principle, however, both brackets can be set to be adjustable in height in order to meet the different requirements.

A releasable tensioning or locking device is preferably assigned to the clutch. The height setting of this bearing ring then determines the height of the canopy regardless of its unfolded state.

In a preferred embodiment of the invention, for example, a bolt which is attached to the tubular mast and operates in the closing direction with a bolt nose engages behind a projection on the lower bearing ring. This bearing ring is thereby at the respective height, preferably at the upper end of the The outer mast is locked, clamped or fixed in some other way, so that the deployment or tensioning path along the mast is predetermined from there.

The projection of the second bearing ring can be formed by an annular flange projecting outwards from the upper end of a projecting coupling sleeve. This has the advantage that the locking or tensioning of the canopy to the mast base can be carried out in any relative rotational position without changing the function.

It has proven to be expedient here if the release device has an unlocking element which projects directly or indirectly into the path of a movable part of the umbrella rod and which acts directly or indirectly on part of the clutch.

For example, an actuating element can be provided opposite a coupling element and a release element, in particular an unlocking ring, can be arranged between the tubular mast.

Such a trigger element can primarily be moved radially to the tubular mast, for which purpose, for example, a guide flange attached to the tubular mast or to the bearing ring can be used, which is preferably arranged closely above the outer flange of the lower bearing ring.

The outer dimension of the unlocking or triggering element should be as much as possible greater than the clear width between the locking element and the opposite actuation element or elements in the closed position of the screen.

For example, the release element can be tilted upward from its support plane by lifting it on one side by means of at least one actuating member in order to prepare the unlocking process. On the other hand, with a slight opening of the screen, the unlocking element can be attached between the actuating elements and a locking element in such a way that after reversal of the movement of the telescopic rod, the bolt can be triggered by the unlocking element by means of one or more actuating elements.

An expansion strut can be used as the actuating element, preferably two, which have a nose with a surface that is approximately axially parallel in the closed state.

• Fig. 1 in schematischer Darstellung einen erfindungsgemäßen Standschirm, zusammengefaltet und in der tiefsten Stellung, der "Ruhestellung"
• Fig. 2 diesen Standschirm in der gleichen Faltstellung bis zur oberen Endstellung, der "Parkstellung", ausge­fahren,
• Fig. 3 den aus der Parkstellung Fig. 2 in die "Schirm­stellung" aufgespannten Standschirm,
• Fig. 4 eine vergrößerte Auszugsdarstellung des Schirm­mastes, teilweise entlang der Linie IV-IV in Fig. 3 geschnitten,
• Fig. 5 einen in Sektionen verkürzten Längsschnitt nach der Linie V-V nach Fig. 4, jedoch mit dem Schirmge­stänge in der Schließstellung nach Fig. 2, und
• Fig.5a eine weiter vergrößerte Einzelheit aus Fig. 5

Further refinements and advantages of the invention are set out in the subclaims and will now be explained in more detail with reference to the drawing. Show it:

• 1 is a schematic representation of a parachute according to the invention, folded and in the lowest position, the "rest position"
• 2 extended this parachute in the same folded position up to the upper end position, the "parking position",
• 3 the standing umbrella stretched from the parking position FIG. 2 into the "umbrella position",
• 4 is an enlarged view of an excerpt from the umbrella mast, partially cut along the line IV-IV in FIG. 3,
• Fig. 5 is a sectioned longitudinal section along the line VV of FIG. 4, but with the umbrella linkage in the closed position of FIG. 2, and
• 5a shows a further enlarged detail from FIG. 5

The standing umbrella shown consists essentially of the telescopic mast (1-3), which is formed by the tubular mast (1) and the telescopic rod (3) displaceable in it by an adjusting device (2), the umbrella linkage (4) and a clutch (5 ).

The parts (1) to (5) initially form a structural unit. The telescopic rod (3) is again tubular, closed at the bottom with an end wall (7) having a nut thread (6) and closed at the top by a cover plate of the first bearing ring (8).

A threaded spindle (9) engages in the nut thread (6) of the end wall (7) and sits inside the tubular mast (1) in an angular gear (10) which is actuated by a hand crank (11).

The threaded spindle (9) has a catchy, self-locking trapezoidal thread with a moderate pitch of e.g. 4 mm. There is therefore no need for self-locking in the angular gear (10), which is normally operated by a hand crank (11) and has a pair of bevel gears (12).

The top of the gear housing (13) can also be used as a stop for the end wall (7) of the telescopic rod (3) or to define the lower holder of the umbrella frames in the rest position Fig. 1. The first bearing ring (8) can be raised by cranking the spindle (9) and thus the telescopic rod (3). The configuration of the umbrella rod remains unchanged, the roof rods (15) hang in their bearings (26) and a second bearing ring (17) is connected to the struts (19) via lower joints (25) and hangs with them in the Joints (30) on the roof bars (15). The upper end of the mast (1) is firmly locked to the second bearing collar (17) via the clutch (5).

This clutch is best seen in Fig. (5a). There, a bearing ring (18) with a Z-shaped cross section is welded to the upper end of the tubular mast (1), on which a lever bearing (16) for a triangular plate-shaped locking lever (29) is attached close to the telescopic rod (3).

The hanging locking lever (29) has a radially widely projecting weight part (30) and, according to FIG. 5 a, engages with a lower locking lug (21) under the outer flange (22) of a coupling sleeve (23), which is mounted on the outer tube by means of bearing bushes (24) (1) guided and firmly connected to the disc-shaped part of the second bearing ring (17).

A flat unlocking ring (32) surrounding the bearing ring (18) lies on the foot flange (27) in the bow cavity (31) of the locking lever (29).

On the right-hand side in FIG. 5 a, the movement space for the unlocking ring (32) is limited by stop lugs (33) attached to the inside of expansion struts (19). The unlocking ring (32) lies between the two stop surfaces (34) of the locking lever (29) and (35) of the stop lugs (33). The locking lug (21) is at a distance (a) from the coupling sleeve (23).

In the rest position according to Fig. 1, the clutch (5) is open, and the unlocking ring (32) is freely adjustable on the base flange (27) of the bearing ring (18). First, the upper edges of the two stop lugs (33) bump under one edge of the unlocking ring (32) and lift it unilaterally. At approximately the same time, the upper edge of the outer flange (22) of the coupling sleeve (23) runs against the inclined surface (14) of the locking lug (21), which then clicks under the restoring moment from the weight part (30) under the outer flange (22).

This closes the clutch and the lower bearing rim (17) is firmly connected to the upper end of the outer tube.

When the crank (11) is subsequently turned backwards, the telescopic rod (3) and with it the upper bearing ring (8) are lowered, and the trim rods (15) are pivoted outwards by the expansion struts (19) into the shield position Fig. 3.

Just as you can maintain the park position of the umbrella according to Fig. 2 at all altitudes from the rest position Fig. 1, this also applies in principle to the opening width. Likewise, the outer mast (1) as a whole or the lower bearing rim (17) can optionally be provided with adjustable height relative to the main mast. If you leave the entire setting device (2) unchanged, the height difference, parking position and rest position are also retained. Only the height of the two end positions of the lower bearing ring (17) changes in the same direction.

To transfer the umbrella from the umbrella position Fig. 3 to the rest position Fig. 1, the telescopic rod (3) is first extended again by means of the hand crank (11) in the transmission used here and the umbrella rod is folded up shortly before reaching the park position Fig. 2.

As soon as the struts (19) have reached an angle of 9 to 10 degrees to the mast, the stop lugs (33) pivot with their stop surfaces (35) against the outside of the unlocking ring (32), which on the opposite side has the locking lever (29) swings open and thereby releases the clutch (5) to the lower bearing rim (17). Since the whole umbrella rod (4) still hangs on the upper bearing rim (8), it does not fall down, but is held in the same position via the telescopic rod (3) by the self-locking of the threaded spindle (9) until the rest position Fig.1 is reached.

Claims (15)

1. Stand umbrella with telescopic mast and the following additional features: a) a telescopic rod (3) is slidably guided in a tubular mast (1) by an adjusting device (2), b) which carries a first bearing ring (8) for the pivotable roof rods (15) of the self-locking umbrella linkage (4); c) the roof rods (15) are supported by expansion struts (15, 19) which are mounted in a second bearing ring (17) which can be displaced vertically on the tubular mast (1), d) which can be coupled to the tubular mast (1) by means of a clutch (5); e) which can be opened and closed in a predetermined sequence within an adjustment cycle by means of the adjusting device (2) and / or the umbrella rod (4). 2. Fixed umbrella according to claim 1, characterized in that an upper and / or lower holder for the lower bearing rim (17) are or are adjustable in height. 3. Fixed umbrella according to claim 1 or 2, characterized in that the clutch (5) has a releasable tensioning or locking device (5). 4. A parachute according to claim 3, characterized in that a, for example on the tubular mast (1) and in the closing direction force-actuating bolt (5) with a bolt nose (21) engages behind a projection (22) on the second bearing ring (17). 5. A parachute according to claim 4, characterized in that the projection (22) of the second bearing ring (17) is formed by an annular flange (22) projecting outwards from the upper end of a projecting coupling sleeve (23). 6. Fixed umbrella according to claim 4 or 5, characterized in that the bolt (5) is designed as a pivot lever (29) guided in an axial plane of the umbrella mast. 7. A parasol according to claim 6, characterized in that the pivot lever (29) is mounted close to the outer tube, for example above the engagement of the locking lug (21), and between the bearing (19) and the engagement region (21) is a radially widely projecting weight part (30). 8. Fixed umbrella according to claim 6 or 7, characterized in that the bearing (19) of the pivot lever (29) is attached to a deformation-resistant bearing ring (18) which is preferably seated on the upper end of the inner rod (3), in particular welded. 9. A parasol according to one of the preceding claims, characterized in that the triggering device has an unlocking element (32) projecting indirectly or directly into the path of a movable part (19) of the umbrella rod (15, 19), which element directly or indirectly on part of the Switching clutch (5) acts. 10. A parasol according to claim 9, characterized in that an actuating element (33) is provided opposite a coupling element (29) and between them a tubular element (1) encompassing a trigger element, in particular an unlocking ring (32) is arranged. 11. A parachute according to claim 10, characterized in that the trigger element (32) is mainly movably guided radially to the mast (1). 12. Fixed umbrella according to claim 11, characterized in that for guiding the trigger element on the mast (1) or the bearing ring (18) attached guide flange is used, which preferably rests on the outer flange (22) of the coupling sleeve (23). 13. Fixed umbrella according to one of claims 9 to 12, characterized in that the outer dimension of the trigger element (32) is greater than the clear width between the locking element (29) and the opposite actuating element or elements (33) in the closed position of the umbrella. 14. A parasol according to claim 13, characterized in that the trigger element (32) is attached by tilting it from one side to the other by means of at least one actuating element (19) so that it can be tilted upwards at an angle. 15. Fixed umbrella according to claim 13 or 14, characterized in that at least one, in particular two adjacent struts (19) are used as the actuating element, which have a stop lug (33) with an actuating surface (35) which is approximately axially parallel in the closed state.

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