EP2103230A1 - Stand umbrella - Google Patents

Abstract

The umbrella has a supporting structure (1) including a vertical pole (3) arranged in a sliding carriage (7) movable in a vertical direction. An end of an arm (4) is flexibly mounted on the sliding carriage, where the arm is flexibly clamped on a bar (5) that is hinged at an upper section of the vertical pole. The arm is made retractable by a slide of the sliding carriage, and an umbrella roof (2) is attached at the end of the arm that turns away to the vertical pole. The sliding carriage is moved and locked by a hand.

Description

The invention relates to a base, with a support structure and an attached and retractable canopy, wherein the support structure comprises a stationary mast, or in which a longitudinally displaceable carriage is arranged, which receives one end of a cantilever, wherein the cantilever is further held articulated by a strut, which is articulated in the upper portion of the stationary mast, and the boom by moving the carriage and is retractable, and wherein the canopy is attached to the mast facing away from the end of the boom.

Such a construction is from the DE 690 06 055 T2 known. The local umbrella also has a drive system for the longitudinal movement of the carriage and thus at the same time for the extension and retraction of the boom. For this purpose, a hand crank is arranged in the lower region of the stationary mast, which drives an internal cable system, which is connected via pulleys with the carriage.

When genus-forming umbrella further a drive system for the extension and Einklappbewegung the canopy is provided. For this purpose, the arranged under the umbrella umbrella umbrella is carried out telescopically. At the lower part of the umbrella pole, a cable is attached, which is guided by the umbrella pole and the boom and is mounted above the hand crank outside lying on the standpost. If the carriage is now moved upwards by means of the hand crank, the lower part of the umbrella pole is automatically pulled in the direction of the umbrella roof, as a result of which the umbrella pole is shortened and the roof ribs of the umbrella roof are raised. Accordingly, in the generic umbrella, the extension and retraction movement of the boom is necessarily coupled with the extension and retraction movement of the canopy.

The generic umbrella, however, proves to be disadvantageous in several respects, both in the production and in the intended use.

Firstly, the user needs for the extension of the boom by means of the hand crank relatively long, since a large number of crank revolutions needed are to extend the boom completely and so at the same time fold out the canopy.

Another major disadvantage is the forced coupling of the extension movement of the boom and the unfolding movement of the canopy. As a result, the boom must always be fully extended so that the canopy is open. A variable adjustment of the boom, for example, to adjust the height and / or inclination of the canopy, is not possible in the generic umbrella.

In addition, the mechanics of the generic umbrella is consuming in the production, which massively affects the final price of the umbrella. The exact adjustment of the drive mechanism for the simultaneous operation of boom and canopy is complicated. If an asynchronicity of the two drive trains occurs, the screen is no longer usable.

Finally, the visual impression of the generic umbrella is adversely affected by the lower hand crank and the outer cable for opening the canopy.

The present invention is therefore the object of a generic umbrella in such a way and further develop that a flexible, cost-effective, visually appealing and technically uncomplicated umbrella is realized.

This object is achieved with the characterizing features of claim 1. Thereafter, an initially mentioned umbrella is designed and developed so that the carriage is manually displaceable and possibly locked.

Advantageous developments of the inventive concept can be taken from the subordinate claims.

In accordance with the invention, the boom of the umbrella is particularly fast and easy extendable and retractable by the carriage is designed to be displaced directly by hand in the longitudinal direction of the stationary mast. It can latching means be provided to realize a lockability of the carriage. This option will usually be given preference. Alternatively, however, can be dispensed with additional locking means, if the carriage-boom connection is self-locking, so that no unintentional displacement of the carriage can occur.

The umbrella according to the invention may have a particularly simple stationary mast, namely since no drive means for extending and retracting the cantilever must be provided on and within the stationary mast. As a result, the visual appearance of the screen according to the invention is not impaired, especially since no external cable must be provided on the stationary mast.

With the screen according to the invention, the possibility of decoupling the extension movement of the boom and the unfolding movement of the canopy is given. While the boom is operable by the manually slidable carriage, the unfolding movement of the canopy can be accomplished by a variety of independent techniques. In the simplest case, the canopy can also be opened and closed by hand. By decoupling the function of the boom and the function of the canopy is made possible with the screen according to the invention to adjust both the height and the inclination of the open canopy without the umbrella roof collapses. Due to the displaceability of the carriage along the stand mast while a special fine adjustability is given.

The screen according to the invention is of uncomplicated construction and thus inexpensive to manufacture. Furthermore, the screen is much more reliable and durable than the generic specimen.

This is a flexible, cost-effective, visually appealing and technically uncomplicated screen specified.

With regard to a cost-effective production and a low total weight of the stationary mast may have a hollow profile. The hollow profile may have an oval, round or angular cross-sectional shape. If the longitudinal direction of the Stand mast sliding carriage is arranged at least partially outside of the stand mast, an oval or angular cross-sectional shape may be preferred because at the same time directed against the rotation of the carriage positive engagement between the carriage and stand mast can be achieved.

Therefore, the carriage is formed in a preferred embodiment as a cuff that surrounds the stationary mast at least partially. In addition, the carriage may have at least two rollers or the like. Means for guiding on or in the stationary mast. The rollers or the like. Means allow a low-friction displacement of the carriage. By setting a suitable preload, the carriage runs without clearance on the stationary mast. As already mentioned, both the stationary mast and the corresponding opening of the enclosing carriage may have a different configuration from the circular shape, whereby undesired rotation of the carriage about the longitudinal axis of the stationary mast is prevented.

In another embodiment, the carriage has a handle for easy and convenient operation. Preferably, the handle is on the back of the carriage, i. designed on the side facing away from the umbrella roof side of the stand mast. This allows the user to operate the carriage without having to be in the work area of the boom and / or the canopy.

In a further, particularly advantageous embodiment, the carriage has at least one pin, a pawl or the like, which can engage in recesses or in a toothing of the stationary mast. It can, for example, be provided a pin which is acted upon by a spring force and is thus automatically pressed in the direction of the stationary mast. In the stationary mast a plurality of spaced bores may be provided, in which the pin can engage to lock the carriage at predetermined heights. In order to move the carriage again, the pin can be designed by hand or by means of a suitable mechanism from the respective bore of the stand mast pulled out. However, in view of a particularly convenient operation and a fine height adjustability of the carriage, the carriage may alternatively comprise a pawl which extends into or on the surface of the stationary mast in the longitudinal direction running toothing can intervene. The pawl is also acted upon by a spring force, so that it automatically engages in the toothing. By an inclination of the pawl in conjunction with the tooth geometry while a shift of the carriage can be made up, without the pawl must be operated externally. However, an unintentional sliding down of the carriage is reliably prevented because the pawl always engages in the interstices of the teeth of the stationary mast.

Accordingly, in connection with the previous exemplary embodiment, it is preferable for the stationary mast to have an internal or external toothing oriented in the direction of the longitudinal axis, if appropriate in the form of a toothed rack or toothed rail produced separately. Such a rack or rail is in a simple manner -. For example, made of hard plastic - produced and fastened by simple means on the stationary mast. The stand itself is not structurally weakened and can still have a shape that is very easy and inexpensive to produce.

It is preferred that the toothing is formed in a formed in a stationary mast, oriented in the direction of the longitudinal direction recess or groove. This initially improves the visual appearance. In addition, a risk of injury or the risk of damage to other parts that come into contact with the teeth, virtually eliminated. Furthermore, a corresponding recess or groove can also serve as a guide means for the carriage.

As already mentioned, a development is preferred in which a pin or a pawl of the carriage is acted upon by a spring force, so that an automatic locking of the height adjustment of the carriage occurs. For releasing this locking, a further embodiment is proposed, in which a standing in operative connection with the pin or the pawl button, lever or the like. Is provided by means of which the pin or the pawl against the spring force is releasable. Such a lever or knob may, for example, be formed in an easily accessible position on the outside of the carriage. If the user already grips the carriage with one hand to ultimately move it, pressing a button to release the lock is easier to accomplish than that Pulling out a pin or a pawl from corresponding recesses of the stationary mast.

Therefore, it is preferred that the button or the lever is associated with the carriage, and in particular during operation of a handle formed in the carriage is operable. Such a button can, for example, be pressed with the thumb, while the rest of the hand engages the carriage to move it after releasing the lock can.

In a further advantageous embodiment, the operative connection between the knob or the lever and the pin or the pawl is made by a cable or a linkage. For example. may be provided between a positioned on the back of the carriage button and arranged in the front part of the carriage pawl a cable that transmits the operating force.

In a very particularly preferred development of the inventive concept, the umbrella additionally has a drive device for folding out and folding in the canopy. The operation of the canopy by hand can be difficult depending on the size of the roof and depending on the height at which the canopy is arranged. Therefore, propulsion systems are known per se, with which a canopy is unfolded and folded. In a consistent continuation of the inventive concept, however, a drive device is preferred here, which operates independently of the height adjustment of the carriage according to the invention and thus independent of the instantaneous position of the boom (off or retracted). Such a drive device may, for example, be arranged at the lower end of the umbrella pole and have a manual operation (for example a hand crank) or a motor drive. As a screen stick while the component is referred to, which is usually arranged in the axis of symmetry of the canopy and the upper end of the spokes receives articulated, which carry the unfolded umbrella canopy.

In a further preferred embodiment, said drive means comprises a cable, which is guided at least by the boom and the canopy operated, and has an actuating device for the cable, wherein the actuating device in particular a cable drum with crank or Electric drive has. Accordingly, the actuator can be conveniently and easily accessible operated by the user, since the cable is guided by the boom to an easily accessible position directly on the stationary mast.

In this case, an embodiment is particularly advantageous in which the actuating device is associated with the carriage. Here, a complete decoupling of the positioning of the carriage is achieved by the operation of the canopy in a particularly sophisticated manner. Since the actuator is associated with the sliding carriage, a displacement of the carriage has no effect on the opening state (off or folded) of the canopy, since the actuator always moves together with the carriage and thus can not enter relative movement between said components. Due to the decoupling already mentioned several times, the height and possibly the inclination of the canopy can now be adjusted by actuating the carriage, while the opening state of the canopy remains unchanged. This is given a simple and simple technique a varied and finely divided adjustability of the screen.

In a further advantageous embodiment, the actuating device is integrated in the carriage and is in particular in the front of the carriage - possibly below the mastseitigen end of the boom - arranged. In this case, the actuating device may comprise a cable drum, which stores the cable, which is guided from the drum by the boom and in the manner described controls the extension and Einklappbewegung of the canopy. The drum can be operated by means of an electric motor or - depending on the size and weight of the construction - by a hand crank.

If the actuating device has a crank drive, it is preferred that the carriage has a holder for the hand crank. Thus, the carriage can store the unused hand crank, without this posing a risk of injury or impairment of the appearance of the construction. Such a holder may, for example, consist of one or more brackets which can receive and fix the middle part of the hand crank.

In an advantageous embodiment, the canopy is articulated on the boom, wherein the joint is optionally designed lockable. By the proposed articulated storage of the canopy ensures that the canopy is always aligned in the horizontal plane. In view of a variety of adjustment of the umbrella according to the invention, however, is preferred to perform this joint lockable. If the position of the canopy is locked relative to the boom, not only the height, but also the inclination of the canopy can be changed by means of the positioning of the carriage (and thus the position of the cantilever). Thus, the screen can be adjusted to changing ambient conditions, in particular to a changed angle of incidence of the sunlight.

Fig. 1

eine perspektivische Gesamtdarstellung eines erfindungsgemäßen Standschirms,

Fig. 2

eine Explosionsdarstellung eines Ausschnitts der Ausführungsform gemäß Detail A von Fig. 1, wobei der Schlitten und ein Teil des Standmastes gezeigt sind,

Fig. 3

eine geschnittene Seitenansicht des Schlittens gemäß Fig. 2, und

Fig. 4

eine von oben gesehene Schnittdarstellung des Schlittens gemäß Schnitt A-A aus Fig. 3.

There are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to the claims subordinate to claim 1 and on the other hand to refer to the following explanation of a preferred embodiment of the invention with reference to the drawings. In conjunction with the explanation of the preferred embodiment of the invention with reference to the drawing, generally preferred embodiments and developments of the teaching are explained. In the drawing show

Fig. 1

an overall perspective view of a screen according to the invention,

Fig. 2

an exploded view of a section of the embodiment according to detail A of Fig. 1 showing the carriage and a part of the stationary mast,

Fig. 3

a sectional side view of the carriage according to Fig. 2 , and

Fig. 4

a seen from above sectional view of the carriage according to section AA Fig. 3 ,

Fig. 1 shows a perspective view of a preferred embodiment of the umbrella according to the invention. The umbrella generally has a support structure 1 with an attached and retractable canopy 2 on. The essential components of the support structure 1 are formed by the stationary mast 3, the boom 4 and the strut 5. Furthermore, the stationary mast 3 has a base 6 at its lower end. At mast facing away from the boom 4, the canopy 2 is hinged, the connection between the boom 4 and canopy 2 can also be formed lockable or rigid.

The stand of the mast 3 associated end of the boom 4 is pivotally received in a carriage 7, which is displaceable in the longitudinal direction of the stand mast 3. Furthermore, the arm 4 is articulated approximately at its center by the strut 5, the other side is articulated at the upper end of the stand mast 3.

In accordance with the invention, the boom 4 is simple and with fine gradation with respect to the stationary mast 3 and retracted by the molded on the back of the carriage 7 handle 8 is taken by the user and the carriage 7 along the stand mast 3 in the direction of its upper End is moved. For details relating to the concrete operation of the carriage 7 in conjunction with the stationary mast 3, reference is made to the detailed illustrations of detail A in FIGS Fig. 2 . 3 and 4 directed.

In a particularly advantageous manner, the carriage 7 is additionally assigned a drive device 9 for folding out and folding in the canopy 2. For this purpose, a cable drum (not shown here) is arranged in the front part of the carriage 7, which is driven via the hand crank 10. The cable drum receives a cable (not shown), which is guided through the interior of the boom 4 and the joint between the boom 4 and canopy 2 to the lower part of the umbrella stock 11. If this cable is shortened by turning the hand crank 10, the lower end of the umbrella pole moves upward, causing the spokes 12 of the canopy 2 unfold and the canopy 2 opens. In the example shown here, the canopy 2 is shown without the roof skin.

The umbrella pole 11 can be made to accomplish its function of two telescoping parts. It is also possible that the umbrella pole 11 consists of two separate parts, which in a shortening of the cable through suitable guide means interlock and thus form a one-piece umbrella pole 11.

In the illustrated, particularly preferred embodiment of the umbrella according to the invention a complete decoupling of the drive for the canopy 2 from the instantaneous position of the boom 4 (and thus of the carriage 7) is realized. The assembly of stand mast 3 and sliding carriage 7 is structurally simple and inexpensive to implement. The boom 4 is quickly and with fine subdivision in height or in the angle adjustable, whereby the unfolded canopy 2 in height, inclination and with respect to the distance from the stationary mast 3 is adjustable.

Fig. 2 refers to detail A. Fig. 1 and shows an exploded view of the carriage 7 and a part of the stand mast 3. The slidable in the longitudinal direction of the stand mast 3 slide 7 is first formed by a right half of the housing 13 and a left housing half 14. The housing halves 13, 14 are interconnected by a plurality of screws 15 and opposing nuts 16. The screws 15 and nuts 16 are each provided with covers 17, resulting in an improved visual impression and a reduced risk of injury. The housing halves 13, 14 are formed so that on the back of the carriage 7, a handle 8 is applied.

Furthermore, are mounted on four of the screws 15, between the housing halves 13, 14, rollers 18 by means of which the carriage 7 on the stationary mast 3 without play and with low friction is displaceable. The rightmost screw 15 is used for articulated mounting of the boom. 4

For locking the carriage 7 in relation to the stationary mast 3 and for a particularly fine height adjustment, a pawl 19 is arranged obliquely in the interior of the carriage 7, which is acted upon by a force acting in the direction of the stationary mast 3 spring force. The pawl 19 interacts with a toothing of the stand mast 3, which is designed as a toothed rail 20, which is arranged in a longitudinal groove 21 of the stand mast 3. The toothed rail 20 is profiled so that the pawl 19 reliably prevents accidental slipping down of the carriage 7 by engaging in the toothing. In contrast, the pawl 19 may However, slide up on the front side of the toothing, so that a displacement of the carriage 7 is possible upwards, without releasing the pawl 19 extra.

If the carriage 7 is to be moved downwards, however, the pawl 19 must be released. For this purpose, a knob 22 is provided above the handle 8, which is provided with a spring 23. By pressing the button 22 by a deflection mechanism (here only partially shown) a cable (not shown here) between the knob 22 and pawl 19 tensioned, the end of the cable is disposed on the upper leg of the pawl 19. Thus, the pawl 19 is pulled out of the toothed rail 20 by pressing the button 22, the carriage 7 can then be moved down. However, if the button 22 is not actuated, the pawl 19 engages due to the force of the spring 22 and another, arranged at the pivot point of the pawl 19 torsion spring (not shown here) always in the toothing.

In the front part of the carriage 7 a drive means 9 for the opening and closing of the canopy 2 is arranged. The drive device 9 has on the one hand a cable (not shown here), which is guided by the boom 4 and the canopy 2 is operated, and has an actuator 24 for the cable on. The actuator 24 is divided into a cable drum 25 for the cable and a hand crank 10, by means of which the cable drum 25 is driven. In order to prevent unintentional unwinding of the cable, the cable drum 25 may be stored so that a self-locking occurs. For this purpose, a torsion spring 26 is provided, which acts on the cable drum 25.

Fig. 3 shows a sectional side view of the carriage 7 and a part of the stand mast 3 according to detail A. Fig. 1 , In this illustration, it is particularly easy to see how the pawl 19 engages the toothed rail 20. By the tooth profile of the toothed rail 20 it is ensured that the pawl 19 together with the carriage 7 can slide upwards on the toothing, while an automatic locking of the position of the carriage 7 occurs against a downward displacement. For this purpose, the pawl 19 is acted upon by the force of a torsion spring 27 which is arranged on the pawl 19 overlapping axis.

On the opposite leg of the pawl 19, a cable 28 is attached, which is guided along the inner wall of the left housing half 14 on the back of the stand mast 3. There, the other end of the cable 28 is fixed to a deflection mechanism 29. The deflection mechanism 29 corresponds to the knob 22 so that by pressing the button 22 ultimately the pawl 19 by means of the cable 28 from the toothed rail 20 can be pulled out. To ensure the operability of the knob 22, this is acted upon by the force of a spring 23.

Furthermore, this illustration is well removable, as the carriage 7 can slide along a total of four rollers 18 on the outside of the stand mast 3. This ensures a low-friction and backlash-free displacement of the carriage 7.

In addition, it can be seen how a cable 30 of the actuator 24 is received in the cable drum 25. The actuator 24 is disposed below the carriage-side end of the boom 4. The cable 30 emerging from the cable drum 25 is guided through the interior of the boom 4, wherein it is guided over a deflection roller 31. By operating the cable drum 25, the cable 30 is received in the cable drum 25, whereby the cable 30 is shortened and thus the Schirmdach 2 is opened in vorbezeichnter way.

Fig. 4 Finally, a sectional view seen from above along the section AA Fig. 3 , In this illustration, it is first clear that the cable drum 25 is arranged on its own axis 32. The axle 32 has at one end via an engagement for the square of the hand crank 10. Between the axis 32 and the housing, a torsion spring 26 is arranged. As a result, unintentional rotation of the cable drum 25 is prevented.

On the left side of this illustration it can be seen that the stationary mast 3 has a substantially oval profile and is designed as a hollow mast. The carriage 7 is designed as a cuff that completely surrounds the stand mast 3. The stand mast 3 is profiled on the right side so that there is a longitudinal groove 21 in which the toothed rail 20 is arranged.

Due to the oval profiling of the stand mast 3 and the formation of the carriage 7 as a cuff, both an undesired rotation of the carriage 7 about the longitudinal axis of the stand mast 3 and an undesired displacement of the carriage perpendicular to the longitudinal axis of the stand mast 3 are prevented.

With regard to further advantageous embodiments of the umbrella according to the invention reference is made to avoid repetition to the general part of the specification and to the appended claims.

Finally, it should be expressly understood that the above-described embodiment of the umbrella according to the invention only serves to discuss the claimed teaching, but this does not limit the embodiment.

LIST OF REFERENCE NUMBERS

1

support structure

2

canopy

3

fixed mast

4

boom

5

strut

6

stand

7

carriage

8th

handle

9

driving means

10

winch

11

umbrella pole

12

spoke

13

right half of the housing

14

left housing half

15

screw

16

mother

17

cover

18

caster

19

pawl

20

dental splint

21

groove

22

stud

23

Spring (button)

24

actuator

25

cable drum

26

Torsion spring (cable drum)

27

Torsion spring (pawl)

28

Cable pull (pawl)

29

deflecting mechanism

30

Cable (umbrella roof)

31

idler pulley

32

Axle (cable drum)

Claims (15)

Standing umbrella, with a support structure (1) and an attached and retractable umbrella canopy (2), wherein the support structure (1) comprises a stationary mast (3) on or in which a longitudinally displaceable slide (7) is arranged, which articulates one end of a boom (4), the boom (4) being further articulated by a strut (5) articulated in the upper portion of the stationary mast (3), and the boom (4) displacing the boom (4) Carriage (7) is extendable and retractable, and wherein the canopy (2) on the said standpost (3) facing away from the end of the boom (4) is attached, characterized in that the carriage (7) by hand displaceable and possibly lockable is. Umbrella according to claim 1, characterized in that the stationary mast (3) has a hollow profile and / or has an oval, round or angular cross-sectional shape. Umbrella according to claim 1 or 2, characterized in that the carriage (7) is designed as a sleeve which surrounds the stationary mast (3) at least partially, and possibly at least two rollers (18) or the like. To guide on or in the stand mast (3). Umbrella according to one of claims 1 to 3, characterized in that the carriage (7) on the back has a handle (8). Umbrella according to one of claims 1 to 4, characterized in that the carriage (7) at least one pin, a pawl (19) or the like., Which can engage in recesses or in a toothing of the stand mast. Umbrella according to one of claims 1 to 5, characterized in that the stationary mast (3) has an inside or outside, oriented in the direction of the longitudinal axis toothing, optionally in the form of a separately prepared rack or toothed rail (20), optionally where the gearing in a stand mast (3) formed, oriented in the direction of the longitudinal axis recess or groove (21) is formed. Umbrella according to claim 5 or 6, characterized in that the pin or the pawl (19) are acted upon by a spring force, and in that in operative connection with the pin or the pawl (19) standing button (22), lever or the like. Provided is, by means of which the pin or the pawl (19) against the spring force is releasable. A parachute according to claim 7, characterized in that the knob (22) or the lever is associated with the carriage (7), and in particular during operation of a carriage (7) formed in the handle (8) can be actuated. Umbrella according to claim 7 or 8, characterized in that the operative connection between the knob (22) or lever and pin or pawl (19) by a cable (28) or a linkage is made. Umbrella umbrella according to one of claims 1 to 9, characterized by a drive device (9) for the unfolding and folding of the canopy (2). Umbrella according to claim 10, characterized in that the drive means (9) comprises a cable (30) which is guided at least by the boom (4) and the canopy (2) actuated, and an actuating device (24) for the cable (30 ), wherein the actuating device (24) esp. Has a cable drum (25) with crank or electric drive. Umbrella according to claim 11, characterized in that the actuating device (24) is associated with the carriage (7). Umbrella according to claim 11 or 12, characterized in that the actuating device (24) in the carriage (7) is integrated, and in particular in the front of the carriage (7) - possibly below the mastseitigen end of the boom (4) - is arranged , Umbrella according to one of claims 11 to 13, characterized in that the carriage (7) has a holder for a hand crank (10). Umbrella according to one of claims 1 to 14, characterized in that the canopy (2) on the boom (4) is articulated, wherein the joint is optionally designed lockable.

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