Opening mechanism for deployable devices and deployable devices

Abstract

This invention relates to an opening mechanism for a deployable device and to the deployable device itself, comprising a support column and a deployable support structure having a plurality of pairs of support arms extending separately in a star-shaped configuration and support rods hinged to the support arms. The support arms are hinged to a first central fixing member, and the support rods are hinged to a second central fixing member. The opening mechanism is designed to open or close the support structure by decreasing or increasing the distance between the first and second central fixing members. The opening mechanism includes an actuation mechanism and a pulley system having a pulley system rope, a fixedly attached first pulley system roller retainer, and a movable second pulley system roller retainer, each having one or more pulley system rollers. The pulley system rope is guided through the pulley system rollers. The actuation mechanism is connected to the movable second pulley system roller retainer of the pulley system. The fast end of the pulley system rope acts on the first and / or second central fixing members in a displaced manner to change their relative distance.

Description

Technical Field

[0001] The present invention relates to an opening mechanism for an unfoldable device, such as a standing umbrella or a rotating clothes rack, and to an unfoldable device. Background Technology

[0002] Rotating clotheslines and stand-up umbrellas, which take the form of center-mast umbrellas and sidearm umbrellas, have very similar deployable support structures. Particularly similar are the center-mast umbrellas and rotating clotheslines; each has multiple support arms and the same number of support rods. The support arms are hinged towards a central mast or support structure, and the support rods are hinged to the support arms and towards a central support structure, respectively, to another support structure. In the case of a stand-up umbrella, the support arms support a canopy made of fabric or other flexible flat material, while in the case of a rotating clothesline, the support arms support a clothesline.

[0003] The difference in the construction of the support arm and support rod between a stand-up umbrella and a rotating clothes rack lies in the following: For a stand-up umbrella, the support arm is typically attached to a retaining device at the top of the support post, also known as the "canopy," which is fixed to the top of the post. The support rod is attached below to a second retaining device that can move vertically along the post; this is also called a raceway or sliding sleeve. In contrast, for a rotating clothes rack, the support rod is typically attached to a fixed upper retaining device, and the support arm is attached to a lower, vertically movable retaining device.

[0004] In both cases, the deployable support is extended by pushing the lower retaining device upwards, thereby reducing the distance between the two retaining devices and moving the support arm to the extended position. Therefore, for a parasol, the support arm tilts downwards, and for a rotating clothes rack, the support arm tilts upwards.

[0005] The principle is very similar for sidearm umbrellas. However, the retaining devices are not directly attached to the support. Instead, the sidearm branches off from the support, or a curved support is used, with a lateral mechanism extending from the end of the support. This lateral mechanism allows the two retaining devices to change the distance between them.

[0006] Finally, there are also combinations of standing umbrellas and rotating clothes racks on the market, wherein the umbrella is attached above the clothesline and the two components are deployed using mechanisms known, for example, from DE 102008052049 A1 or from EP 3070198B1.

[0007] Various opening mechanisms are used and are known for swivel clothes racks and stand-up umbrellas. In the case of handheld umbrellas and small parasols, an axially displaceable sliding sleeve is manually moved upward to a locking device. For swivel clothes racks or larger stand-up umbrellas, a pull cord or crank-operated cord may be used, for example.

[0008] In addition, there are electric actuators or pulleys. These are used, for example, in rotating clothes racks, where the end of the pulley rope is led out of the support post (where the pulley system is housed), and a large section of the pulley rope is pulled out so that, under the action of a corresponding multiplier force to be applied, the lower holding device, connected to the movable pulley roller retainer of the pulley system, is pushed upwards on the support post by a small amount, thereby unfolding the support frame of the rotating clothes rack. This is often combined with a return device for the long end of the pulley rope, which, once the long pulley rope is released, is pulled back into the support post.

[0009] Specifically, at the end of the unfolding process, a strong lateral tension is applied to the support of the rotating clothes rack, so good anchoring in the ground or a very stable support is necessary to prevent the rotating clothes rack from tipping over. It is similar to a pulley-operated standing umbrella. Summary of the Invention

[0010] Regarding known opening mechanisms and deployable devices, the object of the present invention is to describe an opening mechanism and deployable device that allows for the deployment of a support structure with extremely low effort.

[0011] This objective is achieved by an opening mechanism for a deployable device comprising a support column and a deployable support structure having a plurality of pairs of support arms extending separately in a star-shaped manner and support rods hinged to the support arms, wherein the support arms are hinged to a first central fixing member and the support rods are hinged to a second central fixing member, and the opening mechanism is designed to open or close the support structure by decreasing or increasing the distance between the first and second central fixing members. A further development of the opening mechanism is that it includes an actuation mechanism and a pulley system having a pulley system rope, a fixedly attached first pulley system roller retainer, and a movable second pulley system roller retainer, each pulley system roller retainer having one or more pulley system rollers, the pulley system rope being guided through the one or more pulley system rollers, wherein the actuation mechanism is connected to the movable second pulley system roller retainer of the pulley system, and the fast end of the pulley system rope acts displacedly on the first and / or second central fixing members to change their distance from each other.

[0012] This invention is based on the fundamental idea of ​​using a pulley system in the opposite direction to the usual way of opening the support structure. The fast end of the pulley system, i.e., the end where the pulley rope moves rapidly and over a large distance, is no longer used to actuate the pulley system, but is instead connected to a movable second pulley roller retainer, i.e., a sliding sleeve. The slow end of the pulley system, i.e., the movable pulley roller retainer, is subjected to a larger force and a smaller deflection. This is counterintuitive, because the force applied to the pulley system is greater than the force required to unfold the support structure itself. This is compensated by an actuation mechanism connected to the movable second pulley roller retainer. This actuation mechanism is preferably designed to apply a large force with a small deflection.

[0013] The gear ratio of the pulley block is defined by the amount of rope portion of the pulley rope passing between the two pulley block roller retainers, and in embodiments, the gear ratio is between 2:1 and 10:1, preferably between 4:1 and 8:1. This includes both even and odd gear ratios.

[0014] In one embodiment, the pulley system is located inside the support column.

[0015] Advantageously, the opening mechanism includes a force-assisted device designed to continuously apply a force to a movable second pulley roller retainer of the pulley block, directed in the direction that unfolds the support structure. This auxiliary force then no longer needs to be applied by means of an actuation mechanism, and thus facilitates the unfolding of the support structure. The auxiliary force applied by the auxiliary device should preferably be measured so that it assists in unfolding but does not prevent de-expanding, which is normally assisted by gravity.

[0016] In embodiments, the force-assisting device is designed as a spring device having springs or combinations of springs, particularly helical springs, gas springs, and / or gas tension springs, and / or designed as a weight. These can be housed in the support of the device. Helical springs can be used as tension springs or as compression springs, wherein in the case of a tension spring, offset means the extension of the spring, while in the case of a compression spring, offset means the compression of the spring.

[0017] While a constant force independent of position can be obtained when a weight acts as a force-assisting device, the force provided by the spring depends on its offset. The greater the spring's offset, i.e., the more it stretches or compresses, the greater the restoring force exerted by the spring. Because the spring acting as a force-assisting device (whether it is a tension spring or a compression spring) relaxes when assisting in the deployment of the device's support structure and is stressed again when the support structure is closed, the assisting force at the end of the deployment process is less than the initial assisting force. Simultaneously, the spring force near the closed end position cannot be so large as to hinder the folding of the support structure; the closed end position is where the spring force reaches its maximum value.

[0018] In this context, when springs or combinations of springs are used as force-assisting devices, the spring characteristics of the spring device provided in the embodiments are linear, decreasing, or increasing. A decreasing characteristic is understood to mean that the spring characteristic increases less with increasing offset than a linearly increasing spring characteristic. In other words, a decreasing spring characteristic describes a spring that becomes softer as the load increases and stiffer as the load decreases. This means that even when the offset is reduced, thereby reducing the load, the assist remains relatively large to further assist the deployment process. Preferably, the spring should still have sufficient offset in the deployed position of the support structure. This ensures sufficient restoring force in the more relaxed end states of both end states. In contrast, an increasing spring characteristic describes a spring that becomes stiffer with increasing load and softer with decreasing load, respectively. In another embodiment, the spring device is arranged in combination with a weight.

[0019] In one embodiment, the actuation mechanism is securely connected to a movable second pulley roller retainer of the pulley block. This is achieved by connecting the actuation mechanism to the movable second pulley roller retainer of the pulley block via a rope, a chain, or a rigid push rod. The latter embodiment with a rigid push rod has the additional function of allowing force to be applied to the pulley block via the actuation mechanism to assist in closing.

[0020] In embodiments, the actuation mechanism is designed as a lever, an electric winch, a hand-operated rope, a manual crank, foot pedal, or manual lever for pulling the rope, or a manual lever for a rigid push rod. Depending on the design of the actuation mechanism, the gear ratio of the pulley block can be appropriately selected for the force that can be consumed by means of the actuation mechanism. Therefore, by means of a hand-operated rope, a relatively small force can be consumed, which can be absorbed by a low gear ratio. A manual crank, foot pedal, or manual lever with a correspondingly long lever arm or crank arm allows for the generation of significantly greater forces, so that the gear ratio of the pulley block can also be selected accordingly.

[0021] In addition, a locking device may be included for the actuation mechanism, or the actuation mechanism may be self-locking. Alternatively, the support structure itself may also be designed to have a locking device that holds the support structure in the deployed state.

[0022] In one embodiment where the actuation mechanism is self-locking, the lever of the actuation mechanism includes a short lever arm and a long lever arm, wherein the short lever arm is connected at one end to a movable second pulley roller retainer of the pulley block and at the other end to the long lever arm, wherein the long lever arm is pivotally attached to the support about a horizontal axis of rotation at a first distance from the connection with the short lever arm, wherein the first distance and the second distance of the horizontal axis of rotation from the support are selected such that when the deployable support structure is opened by pivoting the long lever arm from a downward-pointing end position to an upward-pointing end position, the end of the short lever arm connected to the movable second pulley roller retainer of the pulley block passes the low point and occupies an end position above the low point when reaching the upward-pointing end position of the long lever arm.

[0023] The self-locking mechanism is based on the fact that, in the end position, the second pulley roller retainer of the pulley block is not at its lowest point, but rather positioned slightly above. A certain force is required to move it downwards back to and beyond the lowest point, thus giving the actuating mechanism a strong tendency to remain in the end position. This can be assisted, if necessary, by a clamping mechanism, by which the long lever arm is clamped and, if necessary, fixed in its upward-pointing end position.

[0024] The object of the present invention is also achieved by a deployable device having a support column, a deployable support structure, and an opening mechanism, the deployable support structure having a plurality of pairs of support arms extending separately in a star-shaped manner and support rods hinged to the support arms, wherein the support arms are hinged to a first central fixing member and the support rods are hinged to a second central fixing member, the opening mechanism being designed to open or close the support structure by decreasing or increasing the distance between the first central fixing member and the second central fixing member, wherein the opening mechanism is designed as described above according to the present invention.

[0025] Therefore, the deployable device embodies the same advantages, properties and features as the opening mechanism according to the invention.

[0026] In embodiments, the deployable device is designed as a standing umbrella, particularly a center mast umbrella or a side arm umbrella, as a rotating clothes rack, or as a combination of a rotating clothes rack and a center mast umbrella.

[0027] Other features of the invention will become apparent from the description of embodiments according to the invention, as well as from the claims and drawings. Individual features or combinations of features can be implemented according to embodiments of the invention.

[0028] In the context of this invention, features marked with "particularly" or "preferredly" should be understood as optional features. Attached Figure Description

[0029] The invention will now be described with reference to the accompanying drawings and exemplary embodiments, but this description does not limit the general inventive concept. For any details of the invention not further explained herein, please refer explicitly to the accompanying drawings. They illustrate:

[0030] Figure 1 This is a diagram showing a standing umbrella in both closed and open states.

[0031] Figure 2 This is a schematic diagram of an embodiment of the opening mechanism according to the present invention.

[0032] Figure 3 These are schematic diagrams of two embodiments of the opening mechanism according to the present invention;

[0033] Figure 4 A schematic diagram of embodiments of an opening mechanism with different actuation mechanisms, and

[0034] Figure 5 This is a schematic diagram illustrating the operating mode of an embodiment of an opening mechanism having a self-locking actuation mechanism.

[0035] In the accompanying drawings, elements and / or parts of the same or similar types are given the same reference numerals, and therefore their respective descriptions are omitted. Detailed Implementation

[0036] Figure 1 A schematic diagram of a standing umbrella in both closed and open states is shown as an example of a deployable device 10. The standing umbrella is provided with a support column 12, also called a mast, which (not shown) can be anchored to the ground or has a stable base. At its upper end, the standing umbrella supports a support structure 14 having multiple support arms 16, each hingedly connected to a support rod 18. The support arms 16 converge towards a first central fixing member 20, also called a canopy, on which a canopy 17 rests, and the support arms 16 are hingedly suspended. The hinged connection to the support rod 18 is located approximately at the center of the support arm 16, which in turn extends from the support arm 16 toward the support column 12, where they are hingedly attached to a movable second central fixing member 22, also called a sliding sleeve or the like.

[0037] In the closed position shown on the left, the support arm 16 hangs substantially vertically downward from the first central fixing member 20, which is fixedly connected to the upper end of the support column 12, just like the support rod 18. In this position, the distance between the first central fixing member 20 and the movable second central fixing member 22 is at its maximum. In the extended position shown on the right, the support arm 16 points in the separating direction but maintains the typical straight angle of a standing umbrella. The support arm 16 is held in the extended position by the support rod 36. For this purpose, the second central fixing member 22 is moved from its lower position to its upper position by a vertical stroke S2.

[0038] In addition, Figure 1 The diagram also shows an opening mechanism 30 of the pulley block 32 according to the invention in the upper region of the support column 12. The pulley block 32 includes a first pulley block roller retainer 34 fixedly suspended and a movable second pulley block roller retainer 36 below it, each pulley block roller retainer having a plurality of pulley block rollers 38. A pulley block rope 40 (which can...) Figure 2 (Clearly visible in the image) It passes through and winds several times around multiple pulley roller shafts 38 on the first pulley roller holder 34 and the second pulley roller holder 36. The pulley rope 40 is connected to the movable second center fixing member 22 via its fast end 42. The pulley block 32 is hinged such that the vertical displacement of the stroke S1 of the movable second pulley roller holder 36 is converted into the reverse stroke S2 ​​of the fast end 42 of the pulley rope 40. Figure 1 In an exemplary embodiment, as in the following exemplary embodiment, the transmission ratio of strokes S2 to S1 is selected as 8:1. Conversely, the transmission ratio also applies to the force to be applied to deploy the support structure 14, which is thus increased eightfold.

[0039] Figure 2 It is based on Figure 1A detailed schematic diagram of an embodiment of the opening mechanism according to the present invention is provided. As can be seen from the diagram, the pulley block 32 is suspended from the upper suspension 33 by a first pulley block roller retainer 34 at its upper part, while the second pulley block roller retainer 36 at its lower part is freely movable relative to the first pulley block roller retainer 34. The two pulley block roller retainers 34 and 36 each hold four pulley block rollers 38 with different circumferences, and the pulley block rope 40 is wound around the pulley block rollers 38 in a typical pulley manner. The number of portions of the pulley block rope 40 between the first pulley block roller retainer 34 and the second pulley block roller retainer 36 is eight, determining the transmission ratio of the pulley block 32 to be 8:1. For this purpose, one end of the pulley block rope 40 is fixed to an upper attachment point 35, which coincides with the axis of the lowermost pulley block roller 38 of the first pulley block roller retainer 34. Subsequently, the pulley rope 40 is guided downwards to the pulley roller 38 of the second pulley roller retainer 36 and then upwards to the pulley roller 38 of the first pulley roller retainer 34, repeating this process four times. After the final upward guidance of the pulley rope 40, the pulley rope 34 is guided into the upper suspension 33, where it is guided outwards and downwards through the redirection roller 39 to reach the movable second center fixing member 22.

[0040] The lower second pulley group roller retainer 36 is further provided with a lower attachment point 37, to which force can be applied. This force can be applied via the actuation device of the opening mechanism. Figure 2 It is also shown that, for pulley block 32, the 8:1 transmission ratio means that the stroke S1 of the second pulley block roller retainer 36 is converted into the reverse stroke S2 ​​of the second center fixing member 22. In absolute terms, the stroke S2 ​​is 8 times the stroke S1. Conversely, the force F2 on the second center fixing member 42 is only one-eighth of the force F1 applied to the second pulley block roller retainer 36.

[0041] Figure 3 Schematic diagrams of two embodiments of the opening mechanism according to the invention are shown, which have different force-assisting devices 90, each force-assisting device 90 being connected at a lower attachment point 37 to (e.g., suspended from) a movable second pulley roller retainer 36 of the pulley block 32. Figure 3 The schematic diagram on the left shows a helical spring 92, which is connected at its upper end to the roller retainer 36 of the second pulley group and at its lower end to a helical spring attachment 93 on the support column 12. In this configuration, the helical spring 92 is a tension spring.

[0042] Figure 3The right half of the diagram illustrates one embodiment in which the force-assisting device 90 is a weight 94 suspended from the lower attachment point 37 of the second pulley group roller retainer 36. The weight 94 pulls the second pulley group roller retainer 36 downwards with a constant gravitational force. While maintaining a transmission ratio of 8:1 relative to the preceding exemplary embodiment, one-eighth of the force exerted by the weight 94 is applied to the second center retainer 22 and can be used to assist in opening the support structure 14. Furthermore, the foot pedal 66 may be equipped with a locking device 80.

[0043] exist Figure 4 In the fourth example, the actuation mechanism 50 includes a manual lever 68 to which a pull cord 52 is attached, extending over approximately one-third of its range from the hinge on the support 12 to the open end of the manual lever 68. Figure 4 The support structure 14 (not shown) is deployed, i.e., the manual lever 68 is extended from... Figure 4 The downward-pointing position shown is brought to the upward position. Through leverage, the movement of the outer end of the manual lever 68 is transmitted to the second pulley group roller retainer 36 at a transmission ratio of approximately 3:1.

[0044] Figure 4 Several schematic diagrams of embodiments of the opening mechanism with different actuation mechanisms are shown. In all the embodiments shown, a force-assisting device 90 is present, which is based on... Figure 3 The left-hand diagram shows a helical spring in the form of 92.

[0045] Figure 4 The embodiments differ in the actuation mechanism 50. In the first embodiment from left to right, the actuation mechanism 50 includes a manual crank 64 around which a pull cord 52 is wound. Depending on the length of the crank arm of the manual crank 64, the opening mechanism 30 can be operated with a moderately small force to unfold the support structure 14. The manual crank 64 may be equipped with a lock and / or may be designed to be self-locking.

[0046] The second embodiment includes a pull rope 62 and a hook 65 redirected around the redirection roller 63, with a loop of the pull rope 62 positioned around the hook 65. The redirection roller 63 allows the loop of the pull rope 62 to be pulled upwards from the bottom with a favorable leverage action, thereby applying force to the second pulley block roller retainer 36 at a more favorable angle of attack. If the redirection roller 63 is positioned close to the ground, even in the case of lateral pulling, only a small tilting torque is applied to the device due to the short lever arm to the ground. Since no force transmission occurs, this type of actuation mechanism 50 is particularly suitable for the small gear ratio of the pulley block 32. For locking, another hook 65 for the loop of the pull rope 62 can be provided, for example, further above the support column 12.

[0047] Figure 4The embodiment shown in the middle includes a foot pedal 66 hingedly fixed at pivot point 67. Approximately midway along the longitudinal extension of the foot pedal 66, a pull cord 52 or rigid push rod 54 is connected to the foot pedal 66. When the foot pedal 66 is pressed down, the pull cord 52 or rigid push rod 54 pulls the second pulley group roller retainer 36 downwards. The leverage ratio on the foot pedal 66 results in a transmission ratio of 2:1, which in this case means that during transmission to the second pulley group roller retainer 36, the travel path of the open end of the foot pedal 66 is halved, and the applied force is doubled.

[0048] Figure 4 The embodiment shown on the far right is also based on the use of a manual lever 70; however, this manual lever 70 is equipped with a self-locking mechanism. Figure 5 In the illustration, this embodiment is schematically shown to demonstrate its function from the closed position (left) to the open and locked position (right).

[0049] In this exemplary embodiment, the manual lever 70 includes a short lever arm 72 and a long lever arm 74 with a handle 75. The short lever arm 72 is hinged to the long lever arm 74 and corresponds to the connection between the long lever arm 74 and a rigid push rod 54 inside the support 12. The push rod 54 is connected to, for example, a... Figure 2 The lower attachment point 37 of the second pulley group roller retainer 36 forms a lever arm 70. A hinge 73 forms the connection between the short lever arm 72 and the push rod 54. The long lever arm 74 is pivotable relative to the support column 12 about a horizontal hinge axis 76, which is suspended from an attachment 78 that is laterally attached to the outside of the support column 12.

[0050] exist Figure 5 The left side shows the initial state for deploying the support structure 14, in which the support structure 14 is... Figure 5 Not shown in the diagram. The long lever arm 74 is horizontally downward. The short lever arm 72 is hinged slightly above the horizontal rotation axis 76 of the long lever arm 74, and enters the support 12 at an angle downward and is connected to the push rod 54 via a hinge 73, in which case the push rod 54 is in its uppermost position. This corresponds to Figure 1 As shown on the left, the support structure 14 is closed.

[0051] To unfold, the long lever arm 74 pivots upwards, which in Figure 5The following three partial figures illustrate this. By offsetting the horizontal axis of rotation 76, the end of the long lever arm 74 connected to the short lever arm 72 moves downward, and via hinge 73, pulls the push rod 54 downward, thereby pulling down the second pulley roller retainer 36 of the pulley block 32, thus unfolding the support structure 14. It can also be seen that a relatively large transmission ratio is achieved relative to the horizontal axis of rotation 76 through the length of the segment of the long lever arm 74, so that the support structure 14 can be unfolded with significantly less force.

[0052] Figure 5 The two partial views on the right show the situation shortly before and when the extended end position is reached. In the penultimate view (second from the right), the long lever arm 74 and the short lever arm 72 form a straight line. In this configuration, the hinge 73 is at its lowest point, i.e., the support structure 14 has been extended to its maximum extent.

[0053] When the long lever arm 74 is pivoted further upwards until it reaches an end position parallel to the support 12, the short lever arm 72 bends again from the long lever arm 74, so that the hinge 73 is in a position slightly higher than its lowest point. This results in a minimal degree of relaxation of the support structure 14, in which it is subjected to tension that is necessary for its deployment. This tension is slightly less than the tension at the lowest point of the hinge 73. This means that the force applied to relax the support structure 14 and to pivot the long lever arm 74 downwards from its upward end position must be greater than the force acting on the long lever arm 74 or the support structure 14 at the end position. In other words, the force ratio thus causes the long lever arm 74 to be pulled along the direction of the support 12 between the penultimate position shown and the end position shown on the right. Therefore, a force must be applied until the short lever arm 72 and the long lever arm 74 are aligned. Only after the hinge 73 has overcome its lowest point during closure can the force ratio facilitate further relaxation of the support structure 14. This can also be achieved by manually actuating the long lever arm 74 downwards, as the rigid push rod 54 transmits the upward movement of the hinge 73 to the second pulley roller retainer 36 of the pulley block 32.

[0054] The attachment 78 may also include a clamping groove for the long lever arm 74 of the manual lever 70, which further assists in locking the long lever arm 74.

[0055] Figure 4 and Figure 5 The actuator 50 shown is partially close to the ground, which means that the person operating the actuator 50 will not block the open support structure 14.

[0056] All features mentioned, including those derived solely from the accompanying drawings and individual features disclosed in combination with other features, are considered, individually or in combination, essential to the invention. Embodiments of the invention can be implemented by individual features or combinations of several features.

[0057] List of reference numerals

[0058] 10 deployable devices

[0059] 12 pillars

[0060] 14 Supporting Structure

[0061] 16 support arms

[0062] 17 umbrellas

[0063] 18 support rods

[0064] 20 First center fastener

[0065] 22 Second center fastener

[0066] 30 opening institutions

[0067] 32 pulley blocks

[0068] 33 upper suspension

[0069] 34 First pulley group roller retainer

[0070] 35 upper attachment points

[0071] 36 Second pulley block roller retainer

[0072] 37 lower attachment points

[0073] 38 pulley block rollers

[0074] 39 redirection rollers

[0075] 40 pulley rope

[0076] 42 pulley system rope fast end

[0077] 50 Actuating Mechanisms

[0078] 52 pull ropes

[0079] 54 rigid push rod

[0080] 60 leverage

[0081] 62 hand ropes

[0082] 63 redirection rollers

[0083] 64 manual crank

[0084] 65 hook

[0085] 66 Foot Pedal

[0086] 67 Pivot Point

[0087] 68 manual lever

[0088] 70 manual lever

[0089] 72 short lever arm

[0090] 73 hinge

[0091] 74 long lever arm

[0092] 75 handle

[0093] 76 Horizontal Rotation Axis

[0094] 78 attachments

[0095] 80 Locking Device

[0096] 90 Force Assist Device

[0097] 92 helical spring

[0098] 93 Helical Spring Attachment

[0099] 94 weights

Claims

1. An opening mechanism (30) for a deployable device (10), the deployable device (10) comprising a support column (12) and a deployable support structure (14), the deployable support structure (14) having a plurality of pairs of support arms (16) extending separately in a star-shaped manner and support rods (18) hinged to the support arms (16), wherein, The support arm (16) is hinged to a first central fixing member (20), and the support rod (18) is hinged to a second central fixing member (22). The opening mechanism (30) is designed to expand or close the support structure (14) by decreasing or increasing the distance between the first central fixing member (20) and the second central fixing member (22). The opening mechanism (30) comprises an actuation mechanism (50) and a pulley block (32), the pulley block (32) having a pulley block rope (40), a fixedly attached first pulley block roller retainer (34), and a movable second pulley block roller retainer (36), each pulley block roller retainer having one or more pulley block rollers (38). The pulley block rope (40) is guided through the one or more of the pulley blocks. A plurality of pulley rollers (38), characterized in that the actuation mechanism (50) is connected to the movable second pulley roller retainer (36) of the pulley group (32), such that actuation of the actuation mechanism (50) causes the movable second roller retainer (36) to deflect, and the fast end (42) of the pulley rope (40) is connected to the first center fixing member (20) or the second center fixing member (22), such that when the actuation mechanism (50) is actuated, the fast end (42) of the pulley rope (40) acts in a displaced manner on the center fixing member (20, 22) to which it is connected, so as to change the distance between the center fixing members (20, 22), wherein the pulley group (32) is disposed inside the support column (12).

2. The opening mechanism (30) according to claim 1, wherein, The pulley system (32) has a transmission ratio between 2:1 and 10:

1.

3. The opening mechanism (30) according to claim 2, wherein, The pulley system (32) has a transmission ratio between 4:1 and 8:

1.

4. The opening mechanism (30) according to claim 1, comprising a force-assisting device (90) designed to continuously apply a force to the movable second pulley roller retainer (36) of the pulley block (32), the force being directed in a direction that causes the support structure (14) to unfold.

5. The opening mechanism (30) according to claim 4, wherein, The force-assist device (90) is designed as a spring device having a spring or a combination of springs, and / or is designed as a weight (94).

6. The opening mechanism (30) according to claim 5, wherein, The spring is a helical spring (92) and / or a gas spring.

7. The opening mechanism (30) according to claim 5, wherein, The spring is a gas spring.

8. The opening mechanism (30) according to claim 5, wherein, The spring device has linear, decreasing, or increasing spring characteristics.

9. The opening mechanism (30) according to claim 1, wherein, The actuation mechanism (50) is connected in a tensile manner to the movable second pulley roller retainer (36) of the pulley block (32).

10. The opening mechanism (30) according to claim 9, wherein, The actuation mechanism (50) is connected to the movable second pulley roller retainer (36) of the pulley block (32) via a pull rope (52), a pull chain, or a rigid push rod (54).

11. The opening mechanism (30) according to claim 1, wherein, The actuation mechanism (50) is designed as a lever (60) or an electric winch.

12. The opening mechanism (30) according to claim 10, wherein, The actuation mechanism (50) is designed as a pull rope (62), and is designed as a manual crank (64) or foot pedal (66) for pulling the rope (52).

13. The opening mechanism (30) according to claim 10, wherein, The actuation mechanism (50) is designed as a manual lever (68) for pulling the rope (52).

14. The opening mechanism (30) according to claim 10, wherein, The actuation mechanism (50) is designed as a manual lever (70) for a rigid push rod (54).

15. The opening mechanism (30) according to claim 1, wherein, It includes a locking device (80) for the actuation mechanism (50), or the actuation mechanism (50) is self-locking.

16. The opening mechanism (30) according to any one of claims 11 to 15, wherein, The manual lever (68, 70) includes a short lever arm (72) and a long lever arm (74), wherein the short lever arm (72) is connected at one end to the movable second pulley roller retainer (36) of the pulley assembly (32), and at the other end is hingedly connected to the long lever arm (74), wherein the long lever arm (74) is pivotally attached to the support (12) about a horizontal axis of rotation (76) at a first distance from the connection with the short lever arm (72), wherein the first distance and the water The second distance of the horizontal rotation axis (76) from the support column (12) is selected such that when the deployable support structure (14) is opened by pivoting the long lever arm (74) from the downward-pointing end position to the upward-pointing end position, the end of the short lever arm (72) connected to the movable second pulley roller retainer (36) of the pulley block (32) passes the low point and occupies the end position above the low point when reaching the upward-pointing end position of the long lever arm (74).

17. A deployable device (10) having a support column (12), a deployable support structure (12), and an opening mechanism (30), the deployable support structure (12) having a plurality of pairs of support arms (16) extending separately in a star-shaped manner and support rods (18) hinged to the support arms (16), wherein, The support arm (16) is hinged to a first central fixing member (20), and the support rod (18) is hinged to a second central fixing member (22). The opening mechanism (30) is designed to open or close the support structure (14) by decreasing or increasing the distance between the first central fixing member (20) and the second central fixing member (22). The opening mechanism (30) is designed according to any one of claims 1 to 16.

18. The deployable device (10) according to claim 17, characterized in that, The deployable device (10) is designed as a standing umbrella, a rotating clothes rack, or a combination of a rotating clothes rack and a central mast umbrella.

19. The deployable device (10) according to claim 18, characterized in that, The deployable device (10) is designed as a center mast umbrella or a side arm umbrella.

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