Holder for attachment to a ladder or stepping ladder and the holder and ladder or stepping ladder assembly

Abstract

The invention describes a holder for attachment to a ladder or stepladder, comprising a support plate and a supporting "U" profile consisting of a base and two side walls. The supporting "U" profile is provided with a handle and is designed to be slid onto the stile of a ladder or stepladder. The holder further comprises a locking device for securing the supporting "U" profile in a selected position, which is formed as at least one manually operated two-position lock with a pawl connected to the supporting "U" profile. The pawl is movable in the plane parallel to the side walls of the supporting "U" profile or in the plane perpendicular to the side walls of the supporting "U" profile.Thanks to the manually operated two-position lock with the locking pawl, the lock position can be easily changed from the open to the closed position with one hand, which in practice means that when the locking pawl is in the open position, pushing or pulling on the locking pawl opens it, and by releasing the pull or push on the locking pawl, the manually operated two-position lock moves into the closed position.

Description

field of technology

[0001] The invention relates to accessories for ladders or stepladders, in particular a holder for attachment to a ladder or stepladder and a holder and ladder or stepladder assembly. The current state of the art

[0002] A ladder or stepladder is a work aid for working at heights greater than a person's height. When working on a ladder or stepladder, safety is always paramount when maneuvering at height. Ladders and stepladders are typically used by tradespeople such as painters, electricians, roofers, plumbers, or DIY enthusiasts for various jobs around the house and garden. When working on a ladder or stepladder, the user usually needs additional equipment, such as tools, a bucket of paint or water, or other accessories. Tool storage can be solved with various multi-purpose belts with pouches, which are used, for example, by electricians, allowing them to keep all the necessary tools for working at height without having to climb down from the ladder or stepladder each time.

[0003] However, such equipment cannot be used, for example, by a painter who needs to lift a bucket or can of paint, or by other tradespeople who need to work at height with heavier tools such as a drill. Therefore, holders are used that can be attached to a ladder or stepladder and are manufactured in various ways. Most commonly, holders are used that can be attached to the horizontal rungs of a ladder or stepladder using a connecting device based on a suspension device or hook. This solution is described, for example, in document US 11136822. A shelf can also be attached to the suspension device or hook, on which a can of paint, a bucket of water, or other small and large tools can be placed.The main disadvantage of these solutions is that the shelf is located in the space between the horizontal rungs of the ladder or stepladder, precisely where a person ascends or descends. Therefore, there is a risk of someone tripping over such a holder, causing all the equipment stored on the shelf to fall to the ground, break, or spill, or even leading to a person wobbling or falling from the ladder or stepladder. Such holders are thus impractical and can even be dangerous.

[0004] This disadvantage is eliminated by brackets for attaching to ladders or stepladders that can be mounted on the side of the ladder or stepladder stiles, i.e., outside the area where a person moves up or down. Such a bracket solution is described, for example, in documents US 20110079467 and US 4032100, which use a vise-based fastener to attach the bracket to the ladder or stepladder stile. The two arms of this vise encircle the stile and are tightened with a clamping screw. While such a vise provides a stable connection to the ladder or stepladder stile, the overall handling of the bracket is very complicated and cumbersome.

[0005] Therefore, holders are known that eliminate these disadvantages and simplify the attachment of the holder to a ladder or stepladder, such that the connecting element comprises a load-bearing "U" profile that is placed on the stile of the ladder or stepladder, thus enclosing it. This load-bearing "U" profile is either equipped with an additional hook or suspension device for attachment to the horizontal rung of a ladder or stepladder, as described in document US 4560127, or a hook is milled directly into the body of the load-bearing "U" profile, which is directly attached to the horizontal rung of a ladder or stepladder. Such solutions are described, for example, in documents US 2883134, US 1880319, and US 2598479. The load-bearing "U" profile can be equipped with a handle for easier handling, for example, for easy placement on and removal from the ladder or stepladder stile.These holders represent a simple solution in principle, but they also have disadvantages, particularly since they are not secured and can therefore easily fall off, even with only minor mishandling of the ladder or stepladder. Furthermore, none of the aforementioned documents include a shelf, but only various hooks or support arms for hanging a can of paint. Therefore, these holders are not universally suitable for use by different tradespeople, for example, for storing various tools and cans or buckets of paint or water.

[0006] The object of the invention is therefore to create such a holder for attachment to a ladder or stepladder, as well as an assembly consisting of the holder and the ladder or stepladder, which eliminates the aforementioned shortcomings. The aim is to develop a holder that can be attached to the side of a ladder or stepladder, does not obstruct work, is easy to attach to and remove from the ladder or stepladder, and is therefore easy to handle. A further objective is to develop a universal holder that can be used by a wide range of tradespeople or DIY enthusiasts, is stable, can bear a greater load, and prevents the ladder or stepladder from tipping over, even when being moved. Last but not least, the holder should allow for easy height adjustment of the ladder or stepladder, preferably with one hand, when the operator needs to hold the ladder or stepladder with the other hand. Nature of the invention

[0007] The problem is solved by means of a holder for attaching a ladder or stepladder according to the present invention. The holder for attaching a ladder or stepladder comprises a support plate and a connecting element for detachably attaching the support plate to the side of the ladder or stepladder. The connecting element has a load-bearing "U" profile consisting of a base and two side walls. The load-bearing "U" profile is provided with a handle and is designed so that it can be slid onto the stile of a ladder or stepladder. The holder also has a locking element to fix the load-bearing "U" profile in the selected position.

[0008] The essence of the invention lies in the fact that the locking mechanism is designed as at least one manually operated two-position lock with a pawl, which is connected to a supporting "U" profile. The pawl is movable in the plane parallel to the side walls of the supporting "U" profile or in the plane perpendicular to the side walls of the supporting "U" profile. Thanks to the manually operated two-position lock with the pawl, the lock position can be easily changed from the open to the closed position with one hand. In practice, this means that when the pawl is in the open position, pushing or pulling on the pawl opens it, and releasing the pull or push on the pawl then moves the manually operated two-position lock into the closed position.Compared to known solutions, this locking mechanism is safe and also easier to use when attaching or removing.

[0009] In a preferred embodiment, a manually operated two-position lock is mounted in the upper part of the side wall of the supporting "U" profile, further away from the shelf. The manually operated two-position lock comprises a housing attached to a supporting "U" profile and a spring-loaded locking pawl extending from the housing parallel to the supporting "U" profile. The pawl is mounted within the housing such that it can pivot in the plane parallel to the side walls of the supporting "U" profile. The locking pawl is equipped with a tooth for engaging behind the rung of a ladder or stepladder and an actuating arm extending perpendicular to the supporting "U" profile. Preferably, the housing is provided with a support arm extending from the housing and positioned opposite the locking pawl.When pressure is applied to the operating arm, the locking pawl tilts into the open position, allowing the holder to be slid onto the rung of a ladder or stepladder. Once the operating arm is released, it returns to its original position facing the support arm, and the tooth engages with the rung. In this fixed position, the holder is secured to the rung, and any tools, buckets, or paint cans can be placed on the tray attached to the side of the ladder or stepladder without obstructing work or movement. If necessary, the holder can be easily removed from the rung and repositioned on another rung or removed entirely.

[0010] In another advantageous embodiment, a manually operated two-position lock is mounted in the upper part of the side wall of the supporting "U" profile, closer to the shelf. The manually operated two-position lock comprises a carrier attached to a supporting "U" profile and a spring-loaded pawl extending from the carrier perpendicular to the supporting "U" profile. The pawl is mounted within the carrier in such a way that it can pivot in the plane perpendicular to the side walls of the supporting "U" profile. The pawl is designed as a reversing lever, one end of which serves as a control element and the other end as a stop for engagement with the rear of the ladder or stepladder stile. When pressure is applied to the control element, the reversing lever is tilted into the open position, at which point the holder can be slid onto the stile of a ladder or stepladder.As soon as the control link is released, it returns to its original position towards the base of the supporting "U" profile, and the stop abuts the ladder or stepladder stile. In this static position, the holder is attached to the stile of the ladder or stepladder, and any tools, or a bucket or can of paint, can be placed on the shelf, which is attached to the side of the ladder or stepladder, without obstructing work or movement on the ladder or stepladder. If necessary, the holder can be removed from the stile of the ladder or stepladder at any time and repositioned at a different height or removed entirely.

[0011] In another advantageous embodiment, a manually operated two-position lock is mounted in the upper part of the side wall of the supporting "U" profile, closer to the shelf. The manually operated two-position lock comprises a carrier attached to a supporting "U" profile and features a rotatable locking pawl in the shape of the letter "L". The apex of the letter "L" is rotatably attached to the carrier, with one arm forming the control element and the other arm a bolt that is movable and allows pivoting in the plane parallel to the base of the supporting "U" profile. The manually operated two-position lock also has a fork to receive the bolt when it rests against the rear of the ladder or stepladder stile.When pressure is applied to the control link, the latch tilts into the open position, allowing the holder to be slid onto the stile of a ladder or stepladder. Once the control link is released, the latch returns to its original position in the fork and engages the ladder or stepladder stile. In this fixed position, the holder is secured to the stile, and any tools, a bucket, or a can of paint can be placed on the side-mounted tray without obstructing work or movement on the ladder or stepladder. If necessary, the holder can be easily removed from the ladder or stepladder stile and repositioned at a different height or removed entirely.

[0012] The support is preferably slidably mounted on the side wall in a direction perpendicular to the base of the supporting "U" profile and is equipped with adjusting screws. Oval holes are provided in the side wall through which the adjusting screws pass to fix the support in the selected position relative to the supporting "U" profile. This makes it possible to adjust the depth of the supporting "U" profile, in particular the distance between the base of the supporting "U" profile and the crossbar. The depth adjustment of the supporting "U" profile can be used especially with wooden stepladders that need to be adjustable because their stiles are wide at the bottom and narrow at the top. This makes the holder according to this invention an even more universal solution, suitable for a wide range of ladders and stepladders with varying sizes and widths.

[0013] In another advantageous embodiment, a manually operated two-position lock is mounted in the upper part of the side wall of the supporting "U" profile, closer to the shelf. The manually operated two-position lock comprises a locking pawl shaped like a "U" pressure profile, positioned opposite the supporting "U" profile so that the open sides of the "U" pressure profile and the supporting "U" profile face each other. The manually operated two-position lock further comprises an operating lever mounted to pivot in the plane parallel to the side walls of the supporting "U" profile. The operating lever is connected to a slidably mounted pull rod, which in turn is connected to the "U" pressure profile. The operating lever can be easily operated with one hand, thereby moving the "U" pressure profile towards or away from the ladder or stepladder stile.

[0014] Preferably, the pull rod and / or the "U" pressure profile are provided with an adjustable link that allows the distance of the "U" pressure profile from the operating lever to be adjusted and the "U" pressure profile to be fixed in the selected position. This advantageous design makes it possible to adapt the holder to the dimensions of the ladder or stepladder stile.

[0015] In a convenient arrangement, a jaw in the shape of an inverted letter "U" is rotatably attached to the lower part of the side wall of the supporting "U" profile, further away from the support plate, by means of a pivot pin. The jaw is mounted so that it can pivot in the plane parallel to the side walls of the supporting "U" profile and is connected to a return spring. A pivot pin is located on one side of the jaw's base, the other side of the jaw's base is rounded, and the arm of the jaw extending from the base of the jaw further away from the pivot pin forms a locking pawl for engaging behind the rung of a ladder or stepladder. This jaw forms a locking element that secures the holder in the locked position even when the "U" pressure profile is released.

[0016] In another advantageous embodiment, the locking mechanism consists of two manually operated two-position locks. One lock is mounted in the upper part of the supporting "U" profile on the side furthest from the platform, and the other is mounted in the lower part of the supporting "U" profile on the side furthest from the platform. Each manually operated two-position lock is designed as a rotatably mounted jaw in the shape of an inverted "U" with a pivot pin. This pivot pin is mounted so that it can move in the plane parallel to the supporting "U" profile and is connected to a return spring. A pivot pin is located on one side of the jaw's base, while the other side of the jaw's base is rounded. The arm of the jaw extending from the base of the jaw further away from the pivot pin forms a locking pawl for engaging behind the rung of a ladder or stepladder.Advantageously, at least one extendable safety lock is attached to the supporting "U" profile to secure the jaw in the open position. Thanks to this advantageous design, the holder can only be operated from the front, without having to reach sideways into a ladder or stepladder to access the jaw arm.

[0017] In the various designs described above, the supporting "U" profile is advantageously designed as a width-adjustable profile, allowing the mutual distance between the side walls to be adjusted and fixed in the selected position. The width adjustability of the supporting "U" profile can be used with ladders and stepladders, making the holder according to this invention an even more universal solution suitable for a wide range of ladders and stepladders with varying sizes and widths.

[0018] The width adjustability described above is advantageously achieved by the supporting "U" profile advantageously comprising two "L" profiles arranged such that the base of the supporting "U" profile consists of two superimposed arms of "L" profiles, each containing opposing oval holes. The supporting "U" profile is also equipped with adjusting screws that pass through oval holes to fix the arms of the "L" profiles in the selected position and to adjust the width of the supporting "U" profile. This ensures the variable use of the ladder or stepladder holder, as a wide variety of ladders or stepladders with different stile widths are available on the market. Thanks to the width adjustability of the holder, it is possible to use just one holder on a multitude of ladders or stepladders.

[0019] The invention also relates to an assembly comprising a bracket for attachment to a ladder or stepladder and a ladder or stepladder assembly. The essence of the invention lies in the fact that it includes the bracket for attachment to the ladder or stepladder described above and the ladder or stepladder itself. The bracket is attached to the ladder or stepladder stile by means of a load-bearing "U"-profile and secured with a manually operated two-position lock, the locking pawl of which engages behind the ladder or stepladder stile.

[0020] The advantages of the holder for attaching a ladder or stepladder and the ladder or stepladder assembly according to this invention are, in particular, that it can be attached to the side of the ladder or stepladder, does not obstruct work, can be easily attached to and removed from the ladder or stepladder, and is therefore easy to handle. The holder according to the invention is also universally applicable and suitable for a wide variety of tradespeople and DIY enthusiasts; it is stable and can therefore bear even heavier loads, and the ladder or stepladder will not tip over, even when moved. Finally, the holder allows for easy height adjustment of the ladder or stepladder with just one hand, even when the operator needs to hold the ladder or stepladder with the other. Explanation of the drawings

[0021] The invention described above is explained in more detail in the following figures, where: Fig. 1 shows the view of the holder and ladder assembly, where the holder has the manually operated two-position lock with the support arm and the pawl with the tooth; Fig. 2 shows the view of the holder after the Fig. 1 Fig. 3 shows the view of the holder with the locking pawl and the reversing lever, Fig. 4 shows the view of the holder to be attached to a ladder after the Fig. 3 Fig. 5 shows the view of the holder assembly after the Fig. 3 and the ladder assembly, Fig. 6 shows the view of the holder with the locking pawl in the shape of the letter "L", Fig. 7 shows the view of the holder to be attached to a stepladder after the Fig. 6 Fig. 8 shows the view of the bracket to be attached to a stepladder according to the Fig. 6 Fig. 9 shows the view of the holder assembly after the Fig. 6and the stepladder assembly, Fig. 10 shows the view of the holder with the "U" pressure profile and the operating lever, Fig. 11 shows the view of the holder to be attached to the ladder after the Fig. 10 Fig. 12 shows the view of the holder after the Fig. 10 with the indicated movement of the "U" pressure profile and the operating lever. Fig. 13 shows the view of the holder with rotating jaws, Fig. 14 shows the view of the holder to be attached to the ladder after the Fig. 13 Fig. 15 shows the view of the holder after the Fig. 13 represented by the indicated movement of the rotating jaws. Example of the realization of the invention Example 1

[0022] The Fig. 1 and the Fig. 2 show a holder 1 for attaching to lightweight aluminum ladders 2 according to this invention. The holder 1 includes a load-bearing "U" profile 5made of sheet metal, preferably an aluminum sheet, which forms a base 29 and two side walls 23, 23' It features a handle in the upper part of the load-bearing "U" profile 5. 6 at the base 29 attached, its ends connected to the base 29 are welded together. On one side wall 23' of the supporting "U" profile 5 is a shelf 4 welded on, which consists of an aluminum sheet, has a rectangular base plan and the edges of the shelf 4 are enclosed, thus creating a limited storage area for tools, buckets, or cans of paint. Reinforcement 33 The lower part of the shelf is made of sheet metal. 4 and the side wall 23 ' of the supporting "U" profile 5 welded on, thus increasing the stability and strength of the shelf. 4 This is guaranteed. The load-bearing "U" profile 5is part of the connecting element for the detachable fastening of the shelf plate 4 from the management 2. On the other side wall 23 of the supporting "U" profile 5 is a locking device for locking the load-bearing "U" profile 5 fitted, which is a manually operated two-position lock 8 This is about. In another example of the design, the load-bearing "U" profile can be used. 5 and the shelf 4 be made of a different material.

[0023] On the upper part of the side wall 23 of the supporting "U" profile 5, the one from the shelf 4 The one further away is a manually operated two-position lock. 8 fastened. The manually operated two-position lock 8 It comprises a sheet metal housing 24. The body of the housing 24 is attached to the side wall 23The supporting "U" profile 5 is welded or bolted on and has a screwed-on cover. A support arm 19 extends from the casing 24 and rests on the back of the rung 10 the ladder 2. The sprout 10 It typically has dimensions of 25 x 25 mm. Inside the housing. 24 is a spring-loaded locking pawl 9 mounted on metal, extending from the upper part of the housing 24 parallel to the supporting "U" profile 5 extends. The locking pawl 9 is opposite the support arm 19 arranged and rests on the front of the rung 10. The locking latch 9 is inside the case 24 mounted in such a way that it can pivot with the spring by means of a pivot pin. Figure 2 shows both pivot positions of the locking pawl 9, i.e., the case of the open locking pawl 9 and the case of the closed locking latch9. The locking latch 9 has a tooth 21 and an actuating arm 25, the perpendicular to the supporting "U" profile 5 It stands. In the case of using the holder. 1 the user grasps the handle 6 in his hand, encircles it with his fingers and presses his thumb against the supporting arm 19 the pawl 9, which causes the spring-loaded pawl to 9 opens, and the holder 1 can go on the stile 7 the ladder 2 be placed so that the supporting "U" profile 5 the spar 7 the ladder 2 surrounds and the tooth 21 after the locking pawl is released 9 on the rung 10 the ladder 2 hooks up. This creates a firm connection between holder 1 and the ladder. 2 ensured, however, that this is always due to the pressure development on the support arm 19 the locking latch9, unhooking the holder 1 from the respective rung 10 and the spar 7 and moving the holder 1 to another rung 10 the ladder 2 can be interrupted. Figure 1 The assembly shows 18 the holder 1 and the conductor 2 according to this invention, i.e. the holder 1 is on the rung 10 the ladder 2 placed. Example 2

[0024] Figures 3 to 5 show a holder 1 for attaching to the ladder 2 or to the stepladder 3 made of aluminum with wide rungs 10 according to this invention. The sprouts 10 They can have a width of 70 to 100 mm and are designed as stepping stones. The holder 1 comprises a load-bearing "U" profile 5 made of sheet metal, which has a base 29 and two side walls 23, 23'It features a handle in the upper part of the load-bearing "U" profile 5. 6 on the side wall 23 attached, its ends connected to the side wall 23 ' are welded. Below the handle 6 is on the side wall 23' of the supporting "U" profile 5, where the handle 6 is attached, a shelf 4 welded on. The shelf plate 4 is made of an aluminum sheet, has a rectangular base plan and the edges of the shelf 4 are edged, creating a limited storage area for tools, buckets, or cans of paint. A sheet metal reinforcement (not shown) is attached to the lower part of the storage plate. 4 and to the side wall 23' welded on, thus increasing the stability and strength of the shelf. 4 This is guaranteed. The load-bearing "U" profile 5is part of the connecting element for the detachable fastening of the shelf plate 4 from the management 2. On this side wall 23 ' of the supporting "U" profile 5, which are closer to the shelf 4 is a locking device for locking the load-bearing "U" profile. 5 attached, which is a manually operated two-position lock 8 This is about. In another example of the design, the load-bearing "U" profile can be used. 5 and the shelf 4 be made of a different material.

[0025] On the upper part of the side wall 23' of the supporting "U" profile 5, the one from the shelf 4 A manually operated two-position lock is less distant. 8 fastened. The manually operated two-position lock 8 includes a carrier 22made of sheet metal, consisting of a load-bearing "L" profile and a body of the support 22 It is assembled. One arm of the supporting "L" profile is attached to the side wall. 23 ' of the supporting "U" profile 5 welded or bolted on. The body of the support. 22 is attached to the second arm of the supporting "L" profile, which is perpendicular to the side wall 23' It stands, welded on. Inside the wearer's body. 22 is a spring-loaded locking pawl 9 mounted on metal, extending laterally from the support 22 stands out. The locking latch. 9 is in the carrier 22 mounted in such a way that they align themselves with the spring in the plane perpendicular to the side walls by means of a pivot pin. 23, 23' of the supporting "U" profile 5 can swivel and is designed as a reversing lever. Figure 3 shows both pivot positions of the locking pawl 9 , i.e., the case of the open locking pawl 9and the case of the closed locking latch 9 The locking latch 9 has a control element 26, which forms one end of a reversing lever, and a stop 27, which forms the other end of the reversing lever. In the event of pressure on the control element 26 When the attack is carried out, it flips. 27 outwards, thus creating a space around the spar 7 the ladder 2 to enclose and thus the holder can 1 onto the spar 7 the ladder 2 to be placed so that the supporting U-profile 5 the spar 7 the ladder 2 from the front, and the stop 27 after releasing the locking pawl 9 from behind the frame 7 the ladder 2 locks into place. The stile 7 It can have a width of 55 to 85 mm.

[0026] Figure 4 shows how to attach the holder. 1according to example 2 onto the ladder 2. The user of the holder 1 grabs the handle 6 in his hand, grasps it with his fingers and presses on the control element with his index finger. 26 the locking latch 9, which causes the reversing lever to engage with the stop 27 is opened and holder 1 is placed on the sill 7 the ladder 2 can be set up. Figure 5 The assembly shows 18 the holder 1 and the leader 2 according to example 2, i.e. the holder 1 is already on the spar 7 the ladder 2 attached, whereby the stop 27 on the back of the spar 7 the ladder 2 rests on it. This creates a firm connection of the holder. 1 with ladder 2, which, however, can be dislodged at any time by the pressure development on the control element 26 the locking latch 9, removing the holder 1from the respective height on the stile 7 the ladder 2 and moving the holder 1 to a different height of the ladder 2 can be interrupted. Example 3

[0027] Figures 6 to 9 show a holder 1 for attaching to a stepladder 3 made of wood according to this invention. The spar 7 the stepladder 3 is usually thicker than the spar 7 the ladder 2 It is made of aluminum and has a width of 70 to 100 mm. The holder 1 includes a load-bearing "U" profile 5 made of an aluminum sheet, which forms a base 29 and two side walls 23, 23' exhibits. In the upper part of the load-bearing "U" profile 5 is a handle 6 on the side wall 23 attached, its ends connected to the side wall 23' They are welded together. Below the handle. 6 is on the side wall 23'of the supporting "U" profile 5, where the handle 6 is attached, a shelf 4 welded on. The shelf plate 4 is made of sheet metal, has a rectangular base plan and the edges of the shelf 4 The edges are bordered, creating a defined surface for tools, buckets, or cans of paint. A sheet metal reinforcement is attached to the lower part of the shelf. 4 and the side wall 23' of the supporting "U" profile 5 welded on, thus ensuring the stability and strength of shelf plate 4. The load-bearing "U" profile 5 is part of the connecting element for the detachable fastening of the shelf plate 4 from the stepladder 3. On this side wall 23 ' of the supporting "U" profile 5, which are closer to the shelf 4is a locking device for locking the load-bearing "U" profile. 5 attached, which is a manually operated two-position lock 8 This is about. In another example of the design, the load-bearing "U" profile can be used. 5 and the shelf 4 be made of a different material.

[0028] On the upper part of the side wall 23' of the supporting "U" profile 5, which is from the shelf plate 4 A manually operated two-position lock is less distant. 8 fastened. The manually operated two-position lock 8 includes a carrier. 22' Made of galvanized sheet metal, manufactured from a profile essentially in the shape of the letter "T". The support is equipped with an upper arm. 22' on the side wall 23' of the supporting "U" profile 5 screwed on, in the other upper arm the carrier 22' a fork 15A locking latch 9 It is in the shape of the letter "L" and can be rotated in the lower arm of the wearer. 22' attached, which stands perpendicular to the upper arms. The rotating mounting of the locking pawl. 9 on the carrier 22' This is done by means of a pivot pin that passes through the lower arm of the carrier. 22' and the peak of the letter "L" of the locking latch 9 runs. One arm of the letter "L" of the locking pawl. 9 forms the control element 26', pressure is applied to it by hand, and the other arm of the letter "L" of the locking pawl. 9 forms the barrier 28. The bar 28 is movable and can be moved in the plane parallel to the base 29 of the supporting "U" profile 5 be swivelled. In the event of pressure on the control element 26 When the lock is activated, the bolt opens. 28 and after releasing the pressure on the control element 26The bar is inserted into the fork 15. The fork 15 serves to hold the bolt 28.

[0029] Figure 6 shows both pivot positions of the pawl 9 according to example 3, i.e. the case of the open pawl. 9 and the case of the closed locking latch 9. In the event of pressure on the control element 26 'If the attack is carried out, it will be overturned.' 27 outwards, thus creating a space so that the load-bearing "U" profile 5 can support the spar. 7 the stepladder 3 can enclose, and thus it is possible to use the holder 1 on the piling 7 the stepladder 3 to be installed. The supporting "U" profile 5 surrounds the spar 7 the stepladder 3 and after releasing the locking pawl 9 The bolt engages 28 into the fork 15 one and encloses the back of the spar 7 the stepladder 3.

[0030] Figure 7 Figure 8 shows how to attach the holder. 1 onto the stepladder 3 following example 3. The user of the holder 1 grabs the handle 6 in his hand, grasps the handle 6 with his fingers and presses on the control element with his thumb. 26' the locking latch 9, which opens the latch 28 and the holder 1 onto the spar 7 the stepladder 3 can be set up. Figure 9 The assembly shows 18 the holder 1 and the leader 3 according to example 3, i.e. the holder 1 is already on the spar 7 the stepladder 3 attached, whereby the stop 27 on the back of the spar 7 the stepladder 3 rests on it. This creates a firm connection of the holder. 1 with the stepladder 3ensured, however, that this is always due to the pressure development on the control element. 26 ' the locking latch 9, removing the holder 1 from the respective height on the stile 7 the stepladder 3 and moving the holder 1 to a different height of the stepladder 3 can be interrupted.

[0031] The holder 1 Example 3 shows a manually operated two-position lock. 8 on the stepladder 3 It is attached and its fixation in the desired position is ensured by the supporting "U" profile. 5 ensures that the rung 10 the stepladder 3 rests on the side wall 23 of the supporting "U" profile 5, further away from the shelf 4 removed, lies after the holder is attached 1 onto the spar 7 the stepladder 3with its lower edge on the top of the rung 10 the stepladder 3 up and thus prevents the holder 1 slides downwards.

[0032] At the holder 1 According to example 3, it is possible to determine the depth of the supporting "U" profile 5 or the distance of the manually operated two-position lock 8 relative to the base. 29 to adjust the load-bearing "U" profile 5. This is done by milling oval holes. 13 into the side wall 23' of the supporting "U" profile 5, which is closer to the shelf. 4 lies, reached. Likewise the carrier 22' features milled oval holes 13 on, which are at holes 13 in the side wall 23' of the supporting "U" profile 5, specifically at the point of the removable attachment to the side wall 23' of the supporting "U" profile 5. Then, adjustment screws are... 11into these oval holes 13 Inserted components are fixed in the selected position relative to the supporting "U" profile 5. This allows adjustment of the depth of the supporting "U" profile. 5 in the direction perpendicular to the base 29 of the supporting "U" profile 5 to be achieved, i.e., the distance of the bar 28 from the base 29 of the supporting "U" profile 5. This will make the holder 1 to the variable dimensions of the spar 7 the stepladder 3 adapted from wood. Example 4

[0033] Figures 10 to 12 show a holder 1 for attaching to the ladder 2 according to this invention. The holder 1 includes a load-bearing "U" profile 5 made from an aluminum sheet that forms a base 29 and two side walls 23, 23' exhibits. In the upper part of the load-bearing "U" profile 5is a handle 6 at the base 29 attached, its ends connected to the base 29 They are welded together. Below the handle. 6 is attached to the side wall 23' of the supporting "U" profile 5 a shelf 4 welded on. The shelf plate 4 is made of sheet metal, has a rectangular base plan and the edges of the shelf 4 The edges are bordered, creating a defined surface for tools, buckets, or cans of paint. A sheet metal reinforcement is attached to the lower part of the shelf. 4 and the side wall 23' of the supporting "U" profile 5 welded on, thus increasing the stability and strength of the shelf. 4 This is guaranteed. The load-bearing "U" profile 5 is part of the connecting element for the detachable fastening of the shelf plate 4 from the management 2.

[0034] On the upper part of the side wall 23' of the supporting "U" profile 5, the one from the shelf 4 A manually operated two-position lock is less distant. 8 fastened. The manually operated two-position lock 8 includes a locking latch 9 made of sheet metal, forming a "U" pressure profile 16 is formed, the open side of which faces the open side of the supporting "U" profile. 5 The manually operated two-position lock is located there. 8 It also includes an operating lever. 14, which is movable and has a pivoting movement in the plane parallel to the side walls 23, 23' of the supporting "U" profile 5 This enables the clamping mechanism of the operating lever. 14 is achieved by means of a slidingly mounted pull rod 17 secured, which uses the "U" pressure profile 16 is connected. The operating lever 14It has a plastic handle and stands perpendicular to the pull rod in the closed dead center position. 17 The pull rod 17 can be done by means of a clamping nut, i.e. by means of an adjustable link 20, that is attached to the pull rod 17 in the area of ​​the "U" pressure profile 16 is located, can be locked, thereby increasing the distance of the "U" pressure profile. 16 from the operating lever 14 set and the "U" pressure profile 16 can be locked in the selected position. In another example of the design, the adjustable link 20 directly on the "U" pressure profile 16 be attached.

[0035] On the lower part of the side wall 23 of the supporting "U" profile 5, the further away from the shelf 4 The removed jaw is a rotatably attached jaw. 30 in the shape of an inverted letter "U" with a pivot pin 34, the in Fig. 11 and Fig. 12 is shown in detail. The cheek 30 is made of sheet metal. The pivot pin 34 is in a hole on one side of the base of the jaw 30 attached and equipped with a return spring 31 equipped with the return spring. 31 is along the pivot 34 It is mounted and ensures the swiveling movement of the jaw. 30 along the pivot 34.

[0036] The other side of the base of the cheek 30 It is rounded and fits freely into the arm of the cheek. 30 about, which extends from the base of the cheek 30 further from the pivot 34 extends and has a locking latch. 9 forms which are behind the rung 10 the ladder 2 or the stepladder 3 engages. Holder 1 according to example 4 is secured with a manually operated two-position lock. 8 on the ladder 2It is attached and its fixation in the desired position is ensured by the fact that the jaw 30 on the rung 10 the ladder 2 rests, ensuring that the holder 1 does not slip downwards. On the supporting "U" profile. 5 is in the area of ​​the cheek 30 a retractable safety lock 32 attached, which is free in the locking position and extends from the side wall 23 of the supporting "U" profile 5 protrudes, so that it prevents twisting of the jaw. 30 prevented. In the event that the extendable safety lock 32 When released or pulled, the cheek moves. 30 freely return to their original position on the pivot pin 34 back.

[0037] Figure 12 shows both positions of the locking pawl 9 following example 4, i.e. the case of the open locking pawl 9and the case of the closed locking latch 9. In the case of an open dead center position of the actuating lever 14, as in the Fig. 10 As shown, the pull rod moves 17 and the "U" pressure profile 16 from the supporting "U" profile 5 away and create a space for enclosing the spar. 7 the ladder 2 through the supporting "U" profile 5, so that the holder 1 onto the spar 7 the ladder 2 can be attached. In that case, if pressure is applied to the operating lever. 14 is exercised as in Fig. 11 As shown, the "U" pressure profile is approaching 16 , i.e., the locking pawl 9, the load-bearing "U" profile 5, and thus enclose the load-bearing "U" profile 5 and the "U" pressure profile 16 the spar 7 the ladder 2 both from the front and the back. Example 5

[0038] Figures 13 to 15 show a holder 1 for fastening to the ladder 2 according to this invention, which has a load-bearing "U" profile 5 with one movement 6 , on which a shelf 4 It is welded on. In this example of the design, two variants are possible for forming the load-bearing "U" profile. 5 In the first variant, the load-bearing "U" profile consists of... 5 made from an aluminum sheet and has a base 29 and two side walls 23, 23'. In the second variant, the supporting "U" profile 5 a base 29 and a side wall 23' from the aluminum sheet and the second side wall 23, further away from the shelf 4 The removal is achieved either by two rotatably mounted jaws. 30 formed or formed by surfaces of these cheeks 30 replaced. Further description of the holder. 1Example 5 can include both variants of the design of the load-bearing "U" profile 5.

[0039] In the upper part of the load-bearing "U" profile 5 is a handle 6 attached, its ends at the base 29 They are welded on. Below the handle. 6 is on the side wall 23 ' of the supporting "U" profile 5 a shelf 4 welded on. The shelf plate 4 is made of sheet metal, has a rectangular base plan and the edges of the shelf 4 are edged around the perimeter, thus creating a limited storage area for tools, buckets, or cans of paint. Reinforcement 33 The lower part of the shelf is made of sheet metal. 4 and the side wall 23' of the supporting "U" profile 5 welded on, thus increasing the stability and strength of the shelf. 4This is guaranteed. The load-bearing "U" profile 5 is part of the connecting element for the detachable fastening of the shelf plate 4 from the management 2.

[0040] In example 5, the locking mechanism consists of two manually operated two-position locks. 8 executed. The first manually operated two-position lock. 8 is on the upper part of the side wall 23 of the supporting "U" profile 5 fastened, and the second manually operated two-position lock 8 is on the lower part of the side wall 23 of the supporting "U" profile 5 attached, with both side walls 23 further from the shelf 4 are removed. Each of the manually operated two-position locks 8 is a rotatably mounted jaw 30 in the shape of an inverted letter "U" with a pivot pin 34 executed, which in the Fig. 14is shown in detail. The cheek 30 is made of sheet metal. The pivot pin 34 is in a hole on one side of the base of the jaw 30 stored and equipped with a return spring 31 The return spring 31 is provided along the pivot pin. 34 It is mounted and ensures the swiveling movement of the jaw. 30 along the pivot 34. The other side of the base of the cheek 30 It is rounded and fits freely into the arm of the cheek. 30 about, which extends from the base of the cheek 30 further from the pivot 34 extends and has a locking latch. 9 forms which are behind the rung 10 the ladder 2 or the stepladder 3 snaps into place. The lower part of the supporting "U" profile 5 attached cheek 30 Its second arm has a recess into which the extendable safety lock fits. 32engages. The extendable safety lock 32 is attached to the supporting "U" profile 5 It is attached and protrudes from the side wall in the locked position. 23 of the supporting "U" profile 5 out, so that it causes the cheek to twist. 30 prevented. Due to the return spring 31 tilts the cheek 30 to turn so that the arm is against the cheek 30, without the extendable safety lock 32 to be secure, with its outer side on the rung 10 the ladder 2 rests on the cheek 30 therefore not on the rung 10 the ladder 2 rests. When securing the jaw 30 with the extendable safety lock 32 will the cheek 30 so that the underside of the base rests on the rung 10 the ladder 2rests on it. In the event that the extendable safety lock is engaged. 32 When released or pulled, the cheek moves freely. 30 on the pivot 34. In the version of Example 5 not shown, the extendable safety lock 32 also in the case of the jaw attached in the upper part of the supporting "U" profile 5 30 It is formed and functions on the same principle as the extendable safety lock. 32 in the lower part of the supporting "U" profile 5 attached cheek 30. If the extendable safety lock 32 If it is not present, the correct alignment of the upper jaw may be affected. 30 This is ensured by the user's thumb, by holding the holder. 1 holds in hand and cups cheek with thumb 30 into the in the Fig. 13 The position shown leads to the point where it is on the rung 10the ladder 2 can lie on it.

[0041] The holder 1 Example 5 uses two manually operated two-position locks. 8 on the ladder 2 It is attached and its fixation in the desired position is ensured by the fact that both jaws 30 on the rung 10 the ladder 2 resting, which ensures that the holder 1 does not slide downwards. Example 6

[0042] All holders described in examples 1 to 5 1 They are adjustable in width. This width adjustability is in the Fig. 6 depicted, but the resulting load-bearing "U" profile 5 This can also be used for the variants of holder 1 from examples 1, 2, 4, and 5. The width-adjustable supporting "U" profile 5 includes two "L" profiles 12,which are slidably connected to each other, so that the base 29 of the supporting "U" profile 5 is formed by two superimposed arms of the "L" profiles 12 is formed. In the base 29 of the supporting "U" profile 5, i.e. in both overlapping arms of the "L" profiles 12, are two oval holes 13' milled, overlapping and arranged so that they are opposite each other. Into these oval holes 13 ' will be adjustment screws 11 ' inserted and according to the required width of the supporting "U" profile 5 in the required position of the oval holes 13 ' fixed, thereby setting the required width of the load-bearing "U" profile 5. Applications in industry

[0043] The holder for attachment to a ladder or stepladder and the holder and ladder or stepladder assembly according to this invention can be used by a wide range of tradespeople and DIY enthusiasts who require various accessories for their work on ladders or stepladders. Overview of reference symbols

[0044] 1 Holder 2 Ladder 3 Stepladder 4 Storage plate 5 Load-bearing "U" profile 6 Handle 7 Stile 8 Manually operated two-position lock 9 Locking pawl 10 Rung 11, 11' Adjusting screw 12 "L" profile 13, 13' Oval holes 14 Operating lever 15 Fork 16 "U" pressure profile 17 Pull rod 18 Assembly 19 Support arm 20 Adjustable link 21 Tooth 22, 22' Beam 23, 23' Side wall of load-bearing "U" profile 24 Housing 25 Operating arm 26, 26' Control element 27 Stop 28 Latch 29 Base of load-bearing "U" profile 30 Jaw 31 Return spring 32 Extendable safety lock 33 Reinforcement 34 Pivot

Claims

1. A holder (1) for attachment to a ladder (2) or stepladder (3), comprising a support plate (4) and a connecting means for detachably attaching the support plate (4) from the side to the ladder (2) or stepladder (3), wherein the connecting means comprises a supporting "U" profile (5) consisting of a base (29) and two side walls (23, 23') and provided with a handle (6), wherein the supporting "U" profile (5) is adapted to be slid onto the stile (7) of the ladder (2) or stepladder (3), wherein the holder further comprises a locking means for locking the supporting "U" profile (5) in a selected position, we Icher is characterized by the fact thatthe locking means is at least a manually operated two-position lock (8) with the locking pawl (9) connected to the supporting "U" profile (5), wherein the locking pawl (9) is movable in the plane parallel to the side walls (23, 23') of the supporting "U" profile (5) and simultaneously the handle (6) is attached to the base (29) of the supporting "U" profile (5) or in the plane perpendicular to the side walls (23, 23') of the supporting "U" profile (5) and simultaneously the handle (6) is attached to a side wall (26, 26') of the supporting "U" profile (5).

2. The holder (1) according to claim 1, which is characterized by this,that the manually operated two-position lock (8) is attached in the upper part of the side wall (23) of the supporting "U" profile (5), further away from the shelf (4), and comprises a housing (24) attached to the supporting "U" profile (5), as well as a spring-loaded locking pawl (9) extending parallel to the supporting "U" profile (5) from the housing (24) and mounted in the housing (24), wherein the locking pawl (9) is capable of pivoting in the plane parallel to the side walls (23, 23') of the supporting "U" profile (5), wherein the locking pawl (9) is provided with a tooth (21) for engaging behind the rung (10) of the ladder (2) or stepladder (3) and an actuating arm (25) extending perpendicular to the supporting "U" profile (5).

3. The holder (1) according to claim 2, which is characterized by, that the housing (24) is provided with a support arm (19) extending from the housing (24) and opposite the locking pawl (9).

4. The holder (1) according to claim 1, which is characterized by, that the manually operated two-position lock (8) is attached in the upper part of the side wall (23') of the supporting "U" profile (5), less far from the support plate (4), and comprises a support (22) attached to the supporting "U" profile (5), and includes a spring-loaded pawl (9) extending from the support (22) perpendicular to the supporting "U" profile (5) and enabling a pivoting movement of the pawl (9) in the plane perpendicular to the side walls (23, 23') of the supporting "U" profile (5), wherein the pawl (9) is formed as a reversing lever, one end of which forms a control element (26) and the other end of which forms a stop (27) to abut the rear of the stile (7) of the ladder (2) or stepladder (3).

5. The holder (1) according to claim 1, which is characterized by,that the manually operated two-position lock (8) is attached in the upper part of the side wall (23') of the supporting "U" profile (5), closer to the support plate (4), and comprises a support (22') attached to the supporting "U" profile (5) and a rotatable locking pawl (9) in the shape of the letter "L", wherein the top of the letter "L" is rotatably attached to the support (22'), one arm forming a control element (26'), the other arm forming a bolt (28) which is movable and can perform a pivoting movement in the plane parallel to the base (29) of the supporting "U" profile (5), and the manually operated two-position lock (8) further comprises a fork (15) for receiving the bolt (28) when it rests on the rear of the stile (7) of the ladder (2) or stepladder (3).

6. The holder (1) according to claim 5, which is characterized by,that the support (22') is slidably attached to the side wall (23') in the direction perpendicular to the base (29) of the supporting "U" profile (5) and is provided with adjusting screws (11), wherein oval holes (13) are located in the side wall (23') through which the adjusting screws (11) pass in order to lock the support (22') in a selected position relative to the supporting "U" profile (5).

7. The holder (1) according to claim 1, which is characterized by,that the manually operated two-position lock (8) is attached in the upper part of the side wall (23') of the supporting "U" profile (5), closer to the shelf (4), and comprises a locking pawl (9) formed as a "U" pressure profile (16), which is arranged opposite the supporting "U" profile (5) so that the open sides of the "U" pressure profile (16) and the supporting "U" profile (5) are opposite each other, and furthermore comprises an actuating lever (14) which can pivot in the plane parallel to the side walls (23, 23') of the supporting "U" profile (5), wherein the actuating lever (14) is connected to a slidably mounted pull rod (17), which in turn is connected to the "U" pressure profile (16).

8. The holder (1) according to claim 7, which is characterized by,that the pull rod (17) and / or the "U" pressure profile (16) are provided with an adjustable link (20) to adjust the distance of the "U" pressure profile (16) from the actuating lever (14) and to lock the "U" pressure profile (16) in the selected position.

9. The holder (1) according to claim 7 or 8, which is characterized by,that a jaw (30) in the shape of an inverted letter "U" is rotatably attached to the lower part of the side wall (23) of the supporting "U" profile (5), further away from the support plate (4), with a pivot pin (34), which is mounted in such a way that it can pivot in the plane parallel to the side walls (23, 23') of the supporting U-profile (5) and is connected to a return spring (31), wherein the pivot pin (34) is arranged on one side of the base of the jaw (30) and the other side of the base of the jaw (30) is rounded, and the arm of the jaw (30) which projects from the base of the jaw (30) further away from the pivot pin (34) forms a locking pawl (9) for engaging behind a rung (10) of a ladder (2) or stepladder (3).

10. The holder (1) according to claim 1, which is characterized by,that the locking means is formed by two manually operated two-position locks (8), one of which is attached in the upper part of the supporting "U" profile (5) on the side furthest from the shelf (4) and the other in the lower part of the supporting "U" profile (5) on the side furthest from the shelf (4), each manually operated two-position lock (8) being formed as a rotatably mounted jaw (30) in the shape of an inverted letter "U" with a pivot pin (34), the jaw being mounted with the possibility of pivoting movement in the plane parallel to the supporting "U" profile (5) and being connected to a return spring (31), the pivot pin (34) being arranged on one side of the base of the jaw (30), and the other side of the base of the jaw (30) being rounded, and the arm of the jaw (30) extending further from the base of the jaw (30) pivot pin (34) protrudes,forms a locking latch (9) for engaging behind the rung (10) of the ladder (2) or stepladder (3).

11. The holder (1) according to claim 10, which is characterized by this, that the rotatably mounted jaws (30) form the side wall (23) of the supporting "U" profile (5), further away from the storage plate (4), and the swivel range of their movement from the open to the closed position is 90° to 110°.

12. The holder according to one of claims 9 to 11, which is characterized by, that at least one extendable safety lock (32) is attached to the supporting "U" profile (5) to lock the jaw (30) in the open position.

13. The holder according to any one of claims 1 to 12, which is characterized by, that the supporting "U" profile (5) is designed as a width-adjustable profile in which the mutual distance of the side walls (23, 23') can be adjusted and locked in the selected position.

14. The holder (1) according to claim 13, which is characterized by this, that the supporting "U" profile (5) comprises two "L" profiles (12) arranged such that the base (29) of the supporting "U" profile (5) is formed by two superimposed arms of the "L" profiles (12) in which opposing oval holes (13') are located, and that the supporting "U" profile (5) is further provided with adjusting screws (11') passing through the oval holes (13') to lock the arms of the "L" profiles (12) in a selected position and to adjust the width of the supporting "U" profile (5).

15. The assembly (18) of the holder (1) for attachment to a ladder (2) or stepladder (3) and the assembly of the ladder (2) or stepladder (3), which is characterized by this,that it comprises a holder (1) for attachment to a ladder (2) or stepladder (3) according to one of claims 1 to 14 and a ladder (2) or stepladder (3), wherein the holder (1) is attached to the stile (7) of the ladder (2) or stepladder (3) by means of a supporting "U" profile (5) and is secured by a manually operated two-position lock (8) with a locking pawl (9) which engages behind the stile (7) or rung (10) of the ladder (2) or stepladder (3).

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