HEIGHT-ADJUSTABLE LOADHOLDING DEVICE

Description

[0001] The invention relates to a height-adjustable load-holding device for suspending a load. It is particularly suitable for suspending loads, for example, sports and fitness equipment, hammocks, tools, furniture, or the like, which may be suspended both within and outside the reach of the operator of the load-holding device.

[0002] It is known to use cam buckles in conjunction with belts to lock the belt under load while still allowing adjustment. For this purpose, cam buckles include locking and counter-holding elements, such as deflection bars and clamping jaws, which, due to surface roughness and angle of attack, create a self-locking effect in one direction of pull. The belt can be pulled through in one direction; in the other direction, the cam buckle blocks the belt from being pulled through. Cam buckles of this type are disclosed, for example, in DE 731 927 C or DE 10 2007 045 170 A1.

[0003] The belt adjustment unit known from WO 2016 / 100566 A1 also describes a device for stepless length adjustment of a belt via a cam buckle with self-locking clamping. Length adjustment is achieved by pulling on the free end of the belt to shorten it and by unlocking it using a separate release strap to lengthen it. The cam buckle contains a movable locking element and a counter-holder, between which the belt is clamped. A swivel joint at the fixed end of the belt also allows for load-dependent movement and facilitates unlocking.

[0004] Cam buckles are commonly used on ratchet straps: The cam buckle creates a closed loop of webbing that can be shortened by pulling on the loose, free end of the strap. Pulling on the loop, however, locks the cam buckle. Ratchet straps with such cam buckles are widely used for securing packages and for securing cargo during transport. Unlocking the cam buckle is usually done manually. This requires either moving the cam buckle to a position that releases the self-locking mechanism or activating a release mechanism that disengages the self-locking mechanism. The previously locked loop can then be lengthened by pulling it through in the direction that would otherwise be blocked.

[0005] The object of the invention is to provide a height-adjustable load-holding device operating with a clamping lock, which makes it possible to raise a suspended load to a desired load height and, if necessary, to adjust the load height by actuating the load-holding device. Operation of the load-holding device should also be possible when the load position is outside the operator's reach.

[0006] This problem is solved by a height-adjustable load-holding device with the features according to claim 1. Advantageous embodiments of the invention are listed in claims 2 to 8.

[0007] According to the invention, the height-adjustable load-holding device comprises a strap and a strap adjustment unit with a releaseable clamping buckle. The load-holding device is intended for suspending a load from the strap, which is guided over a suspension system. The load, for example, a piece of sports equipment suitable for hanging, is attached to a load holder of the load-holding device via the clamping buckle. The load holder can be any fastening element with which the load can be attached to the load-holding device – preferably releasably – for example, a hook, a loop, a snap connection, a buckle, or the like. According to the invention, the load holder is connected to the clamping buckle by means of a load holder swivel bearing, so that the clamping buckle can rotate about the axis of rotation of the load holder swivel bearing relative to the load holder.This allows the load holder to always align itself vertically downwards under tensile force from the load, without bending forces being transferred to the clamping lock.

[0008] In the present context, a strap is understood to be any elongated, tensile-strength, supple, and elastic element designed or suitable for carrying, securing, or handling loads. This includes, among other things, conventional webbing and ropes, but also cables or other comparable load-bearing elements that can fulfill a similar purpose. Preferably, the strap is designed as a conventional webbing.

[0009] In the present context, the term clamping lock also includes clamping buckles and belt buckles.

[0010] The strap, secured at one end (the fixed end) in the cam buckle, is guided around the suspension point when used as intended, and the other end (the free end) is inserted through the cam buckle. The doubled portion of the strap between the suspension point and the cam buckle forms the load-bearing part of the strap in the form of a loop. This load-bearing loop is placed around the suspension point, which can be, for example, a pole, a hook, a branch, or the like. The suspension point, which is not part of the height-adjustable load-holding device but is necessary for its operation, is usually located above the desired suspension position of the load.

[0011] The strap is guided through the cam buckle in such a way that, under tensile load, the strap clamps itself securely within the buckle. This means that when load is applied via the load holder, the cam buckle automatically clamps the strap through friction or force-fit, and its self-locking action fixes the length of the load-bearing strap loop. Therefore, the cam buckle prevents the strap from slipping when the strap loop is under load.

[0012] The free end of the belt is guided in the clamping buckle in such a way that pulling on the unloaded end overcomes the clamping force, allowing the belt to be pulled through the buckle towards the free end. This means that pulling on the free end allows the belt to be pulled through, as the clamping buckle is designed so that the frictional engagement within the buckle is overcome with minimal force when the belt is pulled towards the free end. The length of the load-bearing belt loop is thus shortened by pulling on the unloaded end; that is, the belt adjustment unit suspended from the load-bearing part of the belt, and with it the load, can be continuously adjusted upwards.

[0013] To unlock the clamp, the clamp has a release mechanism which, when activated, unlocks the clamp, thus releasing the clamping action and the self-locking of the belt within the clamp. While the belt can only be pulled in one direction (unidirectionally) through the clamp when not unlocked, unlocking allows the belt to be pulled through the clamp in both directions (bidirectionally). Hereinafter, the state of the clamp with the release mechanism not activated is referred to as the clamping state, and the state with the release mechanism activated is referred to as the unlocked state.

[0014] In order to be able to actuate the release mechanism, the belt adjustment unit, in addition to the clamping lock, comprises, according to the invention, a release belt connected to the release mechanism.

[0015] The strap, or rather its free end, is guided within the cam buckle in such a way that pulling on the release strap connected to the release mechanism allows the cam buckle to be moved along the strap, releasing the clamp and self-locking mechanism. This continuously extends the strap length within the load-bearing loop. In other words, the release strap of the strap adjustment unit is attached to the cam buckle, or rather its release mechanism, in such a way that pulling on the release strap unlocks the cam buckle and simultaneously moves it along the strap, pulling the free end of the strap through the cam buckle towards the loop side. This increases the length of the load-bearing loop, meaning that the strap adjustment unit suspended from the load-bearing loop, and with it the load attached above the load holder, can be continuously lowered.

[0016] The height-adjustable load holding device or its belt adjustment unit thus makes it possible to steplessly raise the load to a desired load height by optionally pulling on the unloaded free end of the belt or on the release belt.

[0017] The load-bearing length of the strap, i.e., the load-bearing loop, can be adjusted by a single person with one hand and without tools. The height-adjustable load-bearing device is suitable for suspending a wide variety of loads; for example, sports equipment, fitness equipment, hammocks, furniture, tools, and much more can be attached. People can also be part of the load, for example, if the person is in a suspended seat. Thus, the load-bearing device can also be used as a lifting aid in outpatient or inpatient healthcare settings to move patients with limited mobility. The strap adjustment unit ensures a secure clamping of the strap under load and allows for easy height adjustment by pulling either the free end of the strap or the release strap.An additional advantage of the height-adjustable load-holding device is that – regardless of whether the strap end or the release strap is pulled – the height can be adjusted by pulling downwards. This means that pulling the strap end downwards raises the load in the opposite direction of pull, and pulling the release strap downwards lowers the load in the same direction.

[0018] To achieve self-locking, the cam buckle comprises a locking element and a counter-holding element, between which the belt is guided. The locking element and the counter-holding element interact in such a way that the belt is clamped in one of its two possible directions of pull, i.e., unidirectionally. The locking element presses the belt against the counter-holding element in such a way that the belt cannot slip through the cam buckle when pulled on the belt loop side, while it can be pulled through when pulled on the free end of the belt. Unlocking the cam buckle, which is achieved by actuating the release mechanism, releases the clamping and the self-locking mechanism, for example by releasing the pressure of the locking element against the counter-holding element, thus allowing the belt to be pulled through the cam buckle in both directions of pull, i.e., bidirectionally.

[0019] Pressing the locking element against the counter-holding element can be achieved by means of a pressure element, in particular a spring-loaded pressure element or a pressure element designed in the form of a spring element. In this case, which is not according to the invention, the unlocking mechanism is designed such that the pressing action of the pressure element is canceled by the unlocking mechanism, for example by pushing the spring element away. In a design of the clamping lock in which the locking element is continuously pressed towards the counter-holding element by means of a spring-loaded pressure element, the unlocking mechanism is thus designed to cancel the spring force of the pressure element acting towards the counter-holding element when the unlocking mechanism is actuated.

[0020] In the design of the clamping lock with a spring-loaded pressure element, this element, which maintains the clamping effect by clamping the belt between the locking element and the counter-holding element, can simultaneously trigger the self-resetting of the unlocking mechanism: The unlocking mechanism is actuated by releasing the spring force. After the unlocking mechanism has been actuated, the spring element automatically returns to its initial position and presses the locking element and the belt back against the counter-holding element. The pressure element thus also acts as the self-resetting mechanism for the unlocking mechanism.

[0021] As an alternative to the versions with a pressure element, the self-resetting of the unlocking mechanism according to the invention takes place by utilizing the tensile force exerted on the clamping lock by the load.

[0022] According to the inventive embodiment of the height-adjustable load-holding device, the clamping buckle is rotatably or foldably mounted on the fixed end of the belt by means of a belt-end pivot bearing about the axis of rotation of the belt-end pivot bearing. When subjected to a downward load from the load attached to the load holder, the clamping buckle folds upwards about the axis of rotation of the belt-end pivot bearing and rests against the load-bearing belt loop. The belt-end pivot bearing can, for example, be formed by the fixed end of the belt and a pin attached to the clamping buckle, with the fixed end of the belt being guided around the pin in the form of a closed loop.

[0023] Furthermore, the release strap is attached to the clamping lock in such a way that when the release strap is pulled downwards, the clamping lock folds downwards by rotating around the axis of rotation of the belt-fixing end pivot bearing.

[0024] In this design of the belt adjustment unit, the clamping buckle flips back and forth between two positions: When the clamping buckle is subjected solely to tensile stress from the load, it flips upwards; when the release strap is subjected to a correspondingly high tensile load, the clamping buckle flips downwards. The flipping or rotating movement occurs around the axis of rotation of the belt end pivot bearing.

[0025] According to the invention, the clamping lock further comprises a locking element designed as a slide and a counter-holding element designed as a counter-holding bar. Both are aligned parallel to the axis of rotation of the belt-fixing end pivot bearing. The slide is guided longitudinally within parallel slide guide grooves provided in the clamping lock, allowing it to slide between two stop positions. The counter-holding bar is arranged adjacent to the stop position of the slide guide grooves furthest from the belt-fixing end pivot bearing; that is, when the clamping lock is folded upwards, the counter-holding bar is located at the top of the clamping lock. When the clamping lock is folded upwards, the belt is guided around the slide in the form of a deflection loop. The belt, thus deflected around the slide, presses the slide against the counter-holding bar when a tensile load is applied to the belt loop. This causes the belt to self-lock between the slide and the counter-holding bar.

[0026] With the cam buckle folded downwards, the strap is no longer in the shape of a deflection loop, but rather follows a straight path around the carriage. The load-bearing strap loop now pushes the carriage away from the counter-support bar within the carriage guide grooves, thus releasing the clamping and self-locking mechanism. The cam buckle is unlocked by folding it downwards.

[0027] Accordingly, the unlocked state is formed when the clamping lock is folded downwards, and the clamping state is formed when the clamping lock is folded upwards.

[0028] In addition to the belt-fixing end pivot bearing that connects the belt end to the clamping buckle, the load-holding device also features the load-holder pivot bearing. The axes of rotation of both bearings are aligned parallel to each other. In the upward-folded position, the axis of rotation of the load-holder pivot bearing is located below the axis of rotation of the belt-fixing end pivot bearing. In the downward-folded position, the axis of rotation of the load-holder pivot bearing is located above the axis of rotation of the belt-fixing end pivot bearing.

[0029] In the designs of the load holding device with a folding clamping lock, it may also be provided that the free end of the belt is guided parallel to the release belt in such a way that a downward pull on the free end of the belt - as well as the downward pull on the release belt - folds the clamping lock downwards and thereby unlocks it.

[0030] It may also be provided that the counter-holding element and / or the locking element has a friction surface in contact with the belt, which - by selecting the material or by surface structuring - increases the friction of the belt sliding on this friction surface.

[0031] The seatbelt adjustment unit can be motorized, meaning it is equipped with an electric motor for adjusting the belt. The motor can be controlled via a remote control and / or a software application (for example, via a smartphone).

[0032] The strap adjustment unit of the height-adjustable load-holding device preferably has an internal strap guide that ensures optimal strap gliding and locking in the desired position. For this purpose, the strap can, for example, have a stiffening element at the end of the strap's free end. This allows the strap to glide through the adjustment unit in a largely straight line; it also prevents the strap tip from rolling back or pointing in the wrong direction.

[0033] The clamping lock is preferably made of a resistant material, such as a metallic material or a high-strength plastic.

[0034] Furthermore, the strap and / or the release strap are preferably made of a flexible, tensile-resistant material, such as polyamide or polyester.

[0035] The height-adjustable load holding device may also include a sensor for measuring the tension of the strap and a wireless data transmission unit coupled to the sensor, wherein the data transmission unit is configured to wirelessly transmit the strap tension measurement data acquired by the sensor to an external display device.

[0036] The invention is explained in more detail below with reference to exemplary embodiments and the schematic drawings, wherein identical or similar features are provided with the same reference numerals; to this end, the following are shown: Fig. 1: Two load-holding devices according to a first, non-inventive embodiment in perspective view; Fig. 2: The functionality of the load-holding device according to the first embodiment in perspective views; Fig. 3: The first embodiment of the load-holding device and its functionality in various detailed views; Fig. 4: A second, non-inventive embodiment of the load-holding device and its functionality in various sectional views; Fig. 5: A third, inventive embodiment of the load-holding device and its functionality in various sectional views; Fig. 6: The third embodiment of the load-holding device when adjusted in the clamping state in sectional view; Fig. 7: The third embodiment of the load-holding device on a suspension in sectional view; Fig. 8: The third embodiment of the load-holding device in the clamping state in perspective view; Fig.9: The third embodiment of the load-holding device in the unlocked state, shown in perspective view.

[0037] The representation according Fig. 1 Figure 1 shows two load-holding devices suspended parallel to one another according to a first embodiment not in accordance with the invention. The load 5 to be attached to, or already attached to, the load-holding devices is, in the exemplary embodiment, according to... Fig. 1 Each includes one gymnastic ring. In addition to the gymnastic ring, the load capacity of 5 typically also includes the (not shown) athlete performing on the gymnastic rings.

[0038] Each load-holding device comprises the strap 1, the clamping lock 2 through which the strap 1 is guided, the release strap 3, and the load holder 4 attached to the clamping lock 2 for the releasable fastening of the load 5. At the in Fig. 1 In the load-holding device shown on the left, the load capacity 5 is detached from the load holder 4 of the load-holding device; at the point shown in Fig. 1 In the load-holding device shown on the right, the load 5 is connected to the load-holding device via the load holder 4.

[0039] Above the clamping lock 2, in the illustration according to Fig. 1 The part of the belt 1 designed as a load-bearing belt loop 1.1. The downward-hanging part of the belt 1 leading out of the cam buckle 2 forms the unloaded belt free end 1.2. The fixed belt end 1.3 of the belt 1 is fixed in the cam buckle 2. The release strap 3 is also attached to the cam buckle 2. The cam buckle 2 and the release strap 3, together with the part of the belt 1 located inside the cam buckle 2, form the belt adjustment unit.

[0040] The height adjustment of the first embodiment of the load-holding device is shown using a suspended load 5 (gymnastics ring) in the partial figures (a) - (c) of the Fig. 2 depicted.

[0041] In partial figure 2(a), the strap 1, with its portion designed as a strap loop 1.1, is attached to the rod-shaped suspension 6 by looping it around the rod-shaped suspension, so that the load holder 4, detached from the load 5, hangs vertically downwards with the attached clamping buckle 2. The strap 1 is locked in the clamping buckle 2 by a self-locking mechanism, so that when the load 5 is attached, the length of the strap loop 1.1 remains unchanged, i.e., the clamping buckle 2 does not slip on the strap 1. The free end 1.2 of the strap 1 and the release strap 3 also hang downwards. They are typically chosen to be significantly longer than the load 5 extends towards the ground, so that a load height can be set well above the operator's arm length.

[0042] According to part 2 (b), when the free end 1.2 of the belt 1 (represented by the arrow with solid outline) is pulled, the clamping force of the belt 1 in the clamping lock 2 is overcome, whereby the belt length of the belt loop 1.1 is shortened, i.e., the clamping lock 2 is pulled upwards with the load 5 (represented by the arrow with dotted outline).

[0043] Figure 2(c) illustrates the downward pulling of the load 5 attached to the clamping buckle 2: By pulling on the release strap 3 (represented by the arrow with a solid outline), the release mechanism is activated and the self-locking of the strap 1 in the clamping buckle 2 is released. Pulling on the release strap 3 causes the strap 1 to slide through the clamping buckle 2; the strap length of the strap loop 1.1 increases. The clamping buckle 2 – and thus the load 5 – is consequently pulled downwards (represented by the arrow with a dotted outline).

[0044] In Fig. 3 Figure 3(a), which shows the first embodiment of the load-holding device, depicts the belt adjustment unit with the guide for the belt 1 in the clamping buckle 2 in detail. Partial Figure 3(a) is a closed perspective view, and Partial Figure 3(b) is a cutaway perspective view of the belt adjustment unit. Partial Figure 3(b) illustrates in particular the fixation of the fixed belt end 1.3 in the clamping buckle 2. The sectional views of Partial Figures 3(c) and (d) show, in Partial Figure 3(c), the belt adjustment unit with the clamping buckle 2 in the clamped state, and in Partial Figure 3(d), the clamping buckle 2 in the unlocked state. In the clamped state according to Partial Figure 3(c), the belt 1 can be pulled through the clamping buckle 2 by pulling on the free belt end 1.2 (arrow with solid outline), causing the clamping buckle 2 to move upwards in the supporting belt loop 1.1 (arrow with dotted outline).

[0045] As shown in Figure 3(d), pulling on the release strap 3 (arrow with solid outline) unlocks the clamping lock 2, i.e., releases the clamping and self-locking mechanism in the clamping lock 2, thereby simultaneously pulling the clamping lock 2 downwards along the strap 1 (arrow with dotted outline). To achieve the clamping action, the clamping lock 2 comprises the clamping element 7 and the counter-holding element 8, both of which are shown in Figures 3(b)-(d); the strap 1 is guided between these two elements. The compression spring 9.1, shown in Figures 3(c) and (d), serves as the pressure element 9.

[0046] The design of the belt adjustment unit according to Fig. 4 , which shows a second, non-inventive embodiment of the load-holding device, operates according to a similar functional principle as the one in the Fig. 1 bis 3 The clamping of the belt 1 takes place in the clamping lock 2 between the counter-holding element 8 and the locking element 7, which is pressed towards the counter-holding element 8 by the compression spring 9.1. The counter-holding element 8 is a counter-holding element with a friction surface 8.1. The friction surface is formed on the surface of the counter-holding element 8 that is in contact with the belt 1. This surface is roughened to increase friction. When the clamping lock 2 is subjected to a downward pull, as shown in partial figure 4(a) (arrow with solid outline), the locking element 7, designed as a pawl 7.1, engages the belt 1 in a self-locking manner. The clamping lock 2 is fixed to the belt 1 in this position. By pulling on the free end of the belt 1.2 - see partial figure 4 (b) - the belt 1 can be pulled through the clamping lock 2 after overcoming the clamping force exerted on the belt 1 between locking element 7 and counter-holding element 8, which now moves along the belt loop 1.1 moves upwards. When the release strap 3 is pulled downwards – see partial figure 4(c) – the locking element 7 is pulled away from the strap 1 by compression of the compression spring 9.1, i.e., the clamping lock 2 is unlocked. The pull on the release strap 3 simultaneously causes the clamping lock 2 to be pulled downwards along the strap 1.

[0047] According to the Fig. 5 bis 9 In the third embodiment of the load-holding device according to the invention, the belt adjustment unit comprises the load-holding pivot bearing 10 and the belt-fixing end pivot bearing 11. The load-holding pivot bearing 10 is positioned between the load-holding device 4 and the clamping buckle 2 such that the load-holding device 4 always points vertically downwards when a load 5 is attached. The belt-fixing end 1.3 of the belt 1 is guided around a pin by means of a closed loop. When a tensile load acts vertically downwards on the load-holding device 4, the pin is positioned above and parallel to the load-holding pivot bearing 10. The closed loop guided around this pin forms the belt-fixing end pivot bearing 11. The arrangement of the belt-fixing end pivot bearing 11 and the load-holding pivot bearing 10 causes the clamping buckle 2 to fold upwards about the axis of rotation of the belt-fixing end pivot bearing 11 when loaded by the load 5.

[0048] The clamping lock 2 has a sliding element 7.2 around which the belt 1 is deflected in the clamping lock 2. The sliding element 7.2 is longitudinally displaceable within the sliding guide grooves 12 of the clamping lock 2.

[0049] When the load-holding device is loaded by the load 5 attached to the load holder 4, the clamping lock 2 – see partial figure 5(a) – is folded upwards, provided that the free end of the belt 1.2 and the release belt 3 are not pulled downwards. The folding upwards is caused by the load 5.

[0050] The section of the belt 1 guided within the clamping lock 2 wraps around the carriage 7.2 such that the deflected belt 1 rests against the bottom of the carriage 7.2 and the belt sections leading away from the carriage 7.2 point upwards; that is, when the clamping lock 2 is folded upwards, the belt 1 forms a deflection loop on the carriage 7.2. When the load 5 is applied to the belt loop 1.1, the belt section formed by the belt loop 1.1 and resting against the carriage 7.2 pulls the carriage 7.2 towards the stop position within the carriage guide grooves 12, i.e., upwards, towards the stop position furthest from the belt-end pivot bearing 11. Furthermore, the section of the belt 1 guided around the carriage 7.2 is pressed together with the carriage 7.2 against the counter-support element 8, which is designed as a counter-support bar 8.2. The belt 1 is thereby clamped self-lockingly between the locking element 7 designed as a slide 7.2 and the counter-holding element 8 designed as a counter-holding bar 8.2.This self-locking clamping of the belt 1 in the clamping lock 2 locks the belt adjustment unit on the belt 1 when subjected to the load 5.

[0051] Since the belt-end pivot bearing 11 is fixed at its height due to the load on the belt loop 1.1 from the load 5, pulling the release strap 3 – see partial figure 5(b) – causes the clamping lock 2 to fold downwards around the pivot axis of the belt-end pivot bearing 11, thereby unlocking the clamping lock 2. Due to this downward folding, the section of the belt 1 guided around the carriage 7.2 no longer acts as a deflection loop, but follows a straightened, slightly S-shaped path. This means that the pressure exerted by the deflection loop on the carriage 7.2 against the counter-support bar 8.2, and thus the self-locking clamping of the belt 1 between the carriage 7.2 and the counter-support bar 8.2, is released. The clamping lock 2 can be released by further pulling on the release strap 3 after it has folded downwards.The clamping lock 2 is pulled downwards (arrow with solid outline) to unlock it, thus lowering the load 5 to a desired, lower load height (arrow with dotted outline). The load 5 causes the clamping lock 2 to fold back into its raised starting position. In the third embodiment of the height-adjustable load-holding device, the unlocking mechanism of the clamping lock 2 is achieved by the variable belt guide within the clamping lock 2 when it is folded down. The self-resetting of the unlocking mechanism is triggered by the clamping lock 2 folding back down, caused by the load 5.

[0052] Pulling the free end of the belt 1.2 downwards – see partial figure 5(c) – causes the cam buckle 2 to fold down and unlock in the same way as pulling the release strap 3. By further pulling the free end of the belt 1.2 after the cam buckle 2 has folded down or unlocked (arrow with solid outline), the cam buckle 2 can be pulled upwards over the belt loop 1.1 around the suspension 6 (arrow with dotted outline) to raise the load 5 to a desired, higher load height. The release strap 3 can also be pulled to assist the downward pull, thus holding the cam buckle 2 in the unlocked position.

[0053] To increase the load capacity 5 to a higher load height, it is not absolutely necessary to fold down the clamping lock 2. Pulling the free end of the belt 1.2 upwards – see Fig. 6 - also allows the self-locking mechanism to be released (arrow with solid outline), since pulling on the free end of the belt 1.2 releases the tension in the belt loop 1.1 and thus the pressure of the slide 7.2 against the counter-holding bar 8.2. If, for example, the free end of the belt 1.2 is first guided upwards over the suspension 6 and then downwards again, pulling on the free end of the belt 1.2 – without unlocking the clamping lock 2 – allows the load 5 to be raised to a higher load height (arrow with dotted outline).

[0054] A belt guide with the belt free end 1.2 guided over the suspension 6 shows Fig. 7 . With this belt guide, the load holding device acts like a pulley; it is particularly suitable for lifting heavy loads 5.

[0055] The perspective views of the third embodiment of the height-adjustable load-holding device according to the Fig. 8 und Fig. 9 Illustrate the design of the hinged clamping lock 2 with the locking element 7 designed as a slide 7.2 and the counter-holding element 8 designed as a counter-holding bar 8.2.

[0056] Fig. 9Figure 1 further shows two locking pins 13 for temporarily locking the belt end 1.2. The locking pins 13, which face each other inwards from the sides of the clamping buckle 2, leave a defined gap between their facing ends. The belt 1 has a width that almost fills the clamping buckle 2 and is greater than the gap between the locking pins. In the exemplary embodiment, the release strap 3 has a width that is smaller than the gap between the locking pins; however, it can also, for example, have the same width as the belt 1. The belt end 1.2, together with the release strap 3, can be positioned against the clamping buckle 2 and guided inside around the locking pins 13. This ensures that the belt 1 remains pressed against the counter-holding bar 8.2 when the clamping lock 2 is folded down, so that the clamping and self-locking is not completely lost even when the clamping lock 2 is folded down.Threading the belt 1 inside the locking pins 13 ensures that the clamping is completely released in the event of accidental pulling on the belt free end 1.2 or on the release belt 3.

[0057] The belt 1 can be guided in this manner, as shown in part 5 (a), if the load height is to remain permanently unchanged. Reference symbol list

[0058] 1 Strap 1.1 Load-bearing strap loop 1.2 Load-free strap end 1.3 Strap fixing end 2 Clamping lock 3 Release strap 4 Load holder 5 Load capacity 6 Suspension 7 Locking element 7.1 Locking pawl 7.2 Slide 8 Counter-holding element 8.1 Counter-holding element with friction surface 8.2 Counter-holding bar 9 Pressure element 9.1 Compression spring 10 Load holder swivel bearing 11 Strap fixing end swivel bearing 12 Slide guide groove 13 Locking pin

Claims

1. Height-adjustable load holding device having a strap (1) to be guided via a suspension (6) for the suspended attachment of a load (5), wherein the load holding device comprises the strap (1) and a strap adjustment unit which includes a clamping lock (2) provided with a self-resetting release mechanism as well as a release strap (3) connected to the release mechanism of the clamping lock (2), wherein the strap (1) forms a strap fixed end (1.3) which is fixed in the clamping lock (2), and wherein the strap (1) is guided through the clamping lock (2) such that - a load-bearing strap loop (1.1) of the strap (1) for looping around the suspension (6) is formed, - under tensile load acting on the load-bearing strap loop (1.1), the strap (1) self-lockingly clamps in the clamping lock (2), - the strap (1) is pullable through the clamping lock (2) by pulling on a free strap end (1.2) of the strap (1) led out of the clamping lock (2), with release of the self-locking action, wherein the strap length in the load-bearing strap loop (1.1) of the strap (1) is continuously shortened, - the clamping lock (2), released by pulling on the release strap (3), is displaceable along the strap (1) with release of the clamping and self-locking action, wherein the strap length in the load-bearing strap loop (1.1) is continuously lengthened, wherein the load holding device comprises a load holder (4) attached to the clamping lock (2), to which the load (5) is detachably attachable, wherein the load holder (4) is rotatably connected to the clamping lock (2) by means of a load holder pivot bearing (10), wherein the clamping lock (2) comprises a locking element (7) and a counterholding element (8), between which the strap (1) is guided such that the strap (1) is pullable through in one pulling direction and the strap (1) self-lockingly clamps in the other pulling direction, wherein - the clamping lock (2) is rotatably mounted at the strap fixed end (1.3) by means of a strap fixed end pivot bearing (11) about the pivot axis of the strap fixed end pivot bearing (11), wherein the clamping lock (2), under downwardly acting load by the load (5) attached to the load holder (4), is folded upward about the pivot axis of the strap fixed end pivot bearing (11) and bears against the load-bearing strap loop (1.1), - the release strap (3) is attached to the clamping lock (2) such that, upon a downwardly directed pull on the release strap (3), the clamping lock (2) folds downward by rotation about the pivot axis of the strap fixed end pivot bearing (11), wherein - the clamping lock (2) comprises a locking element (7) formed as a slide (7.2) and a counterholding element (8) formed as a counterholding rod (8.2), both aligned parallel to the pivot axis of the strap fixed end pivot bearing (11), - the slide (7.2) is guided within parallel slide guide grooves (12) formed in the clamping lock (2) so as to be longitudinally displaceable between two stop positions, the counterholding rod (8.2) is arranged adjacent to the stop position of the slide guide grooves (12) that is remote from the strap fixed end pivot bearing (11), wherein - when the clamping lock (2) is folded upward, the strap (1) is guided in the form of a deflection loop around the slide (7.2), wherein the strap (1) deflected around the slide (7.2) presses the slide (7.2) against the counterholding rod (8.2) under tensile load on the strap loop side, and wherein the strap (1) self-lockingly clamps between the slide (7.2) and the counterholding rod (8.2), - when the clamping lock (2) is folded downward, the load-bearing strap loop (1.1) presses the slide (7.2) within the slide guide grooves (12) away from the counterholding rod (8.2), thereby releasing the clamping and unlocking the clamping lock (2).

2. Height-adjustable load holding device according to claim 1, characterised in that the free strap end (1.2) is guided parallel to the release strap (3) such that a downwardly directed pull on the free strap end (1.2) folds the clamping lock (2) downward and unlocks it.

3. Height-adjustable load holding device according to claim 1 or 2, characterised in that the locking element (7) and / or the counterholding element (8) comprise a friction surface in contact with the strap (1) for increasing friction.

4. Height-adjustable load holding device according to one of claims 1 to 3, characterised in that the strap (1) is made of a flexible, tensile-strength material.

5. Height-adjustable load holding device according to claim 4, characterised in that the flexible, tensile-strength material is polyamide or polyester.

6. Height-adjustable load holding device according to one of claims 1 to 5, characterised in that the clamping lock (2) is made of a metallic material or of a high-strength plastic.

7. Height-adjustable load holding device according to one of claims 1 to 6, characterised in that the load holding device comprises a sensor for measuring the tension of the strap (1) as well as a wireless data transmission unit coupled to the sensor, wherein the data transmission unit is configured to transmit the strap tension measurement data detected by the sensor wirelessly to an external display device.

8. Height-adjustable load holding device according to one of claims 1 to 7, characterised in that the load holding device comprises a remotely controllable electric motor for strap adjustment.