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EP-4741623-A1 - HOLDER FOR ATTACHMENT TO A LADDER OR STEPPING LADDER AND THE HOLDER AND LADDER OR STEPPING LADDER ASSEMBLY

EP4741623A1EP 4741623 A1EP4741623 A1EP 4741623A1EP-4741623-A1

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.

Inventors

  • Saurwein, Robert

Assignees

  • Saurwein, Robert

Dates

Publication Date
20260513
Application Date
20251111

Claims (15)

  1. A holder (1) for attachment to a ladder (2) or stepladder (3), comprising a shelf (4) and a connecting means for detachably attaching the shelf (4) to the side of 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, which is characterized in that the locking means is at least one manually operated two-position lock (8) with a 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, further characterized in 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 from the housing (24) parallel to the supporting "U" profile (5) 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) has a tooth (21) for engaging behind the rung (10) of the ladder (2) or stepladder (3) and a tooth extending perpendicular to the supporting "U" profile (5). is equipped with an actuating arm (25).
  3. The holder (1) according to claim 2, which is characterized in 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 in that the manually operated two-position lock (8) is located in the upper part of the side wall (23') of the supporting "U" profile (5), less far from the shelf. (4), is attached and comprises a support (22) which is attached to the supporting "U" profile (5), and a spring-loaded pawl (9) which extends from the support (22) perpendicular to the supporting "U" profile (5) and enables 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 in 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'), wherein one arm forms a control element (26'), the other arm 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 is on the rear side of the stile (7) of the ladder (2) or stepladder. (3) is laid down.
  6. The holder (1) according to claim 5, which is characterized in 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 in 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) such that the open sides of the "U" pressure profile (16) and the supporting "U" profile (5) are opposite each other, and further 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 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 in 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 in that a jaw (30) in the shape of an inverted letter "U" with a pivot pin (34) 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), 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 in 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 The arm of the jaw (30), which extends from the base of the jaw (30) further from the pivot pin (34), forms a locking pawl (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 in that the rotatably mounted jaws (30) support the side wall (23) of the supporting "U" profiles (5), further away from the storage plate (4), form, 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 in 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 one of claims 1 to 12, which is characterized in 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 in 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') which pass 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 in 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 the rung (10) of the ladder (2) or stepladder (3).

Description

field of technology 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 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. 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 connector based on a suspension device or hook. Such a solution is described, for example, in the document [document name missing in original text]. US 11136822 A shelf can also be attached to the hanging device or hook, on which a can of paint, a bucket of water, or other small and larger tools can be placed. The main disadvantage of this solution is that the shelf is located in the space between the horizontal rungs of the ladder or stepladder, i.e., in the space where a person ascends or descends. Therefore, there is a possibility that someone could accidentally knock something over such a holder. If someone trips, all the equipment stored on the tray falls to the ground, breaks, or spills, or even if someone wobbles or falls from a ladder or stepladder, such holders are impractical and can even be dangerous. This disadvantage is eliminated by brackets for attaching ladders or stepladders, which 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 the documents US 20110079467 and US 4032100 The described method uses a vise-based fastener to attach the holder 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 holder is very complicated and cumbersome. 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 equipped either with an additional hook or an additional suspension device for attaching to the horizontal rung of a ladder or stepladder, as shown in the document. US 4560127 As described, or a hook is milled directly into the body of the supporting "U" profile, which is then hooked directly onto the horizontal rung of a ladder or stepladder. Such a solution is described, for example, in the documents. US 2883134 , US 1880319 or US 2598479 The supporting "U" profile can be equipped with a handle for easier handling, for example, for easy placement and removal from the ladder or stepladder stile. These holders represent a simple solution in principle, but 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. The object of the invention is therefore to provide such a holder for fastening to a ladder or stepladder, as well as an assembly consisting of the holder and the ladder or stepladder. The goal is to create a holder that eliminates the aforementioned shortcomings. This holder can be attached to the side of a ladder or stepladder without obstructing work, is easy to attach and remove, and therefore simple to use. Another 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 heavier load, and prevents the ladder or stepladder from tipping over, even when moved. Finally, the holder sho