Stile and step for a ladder and ladder with the stile and / or the step

Abstract

Holm (1) for a ladder, - wherein a step (2) or rung of the ladder can be attached to an inside of the ladder stile (1), - wherein a user's hand can be placed on a front and an outside of the ladder stile (1) when climbing the ladder, - wherein the ladder stile (1) has a hollow profile which - a first wall (11) on the inside of the ladder stile (1), - a second wall (12) on the front of the ladder stile (1), - a third wall (13) on the outside of the ladder stile (1) and - a fourth wall (14) on the back of the ladder stile (1) exhibits characterized by - that the first wall (11) and the second wall (12) enclose an angle of 60° to 80°, in particular of 65° to 75°, and / or - that the third wall (13) has a front section (131) and a rear section (133) and the rear section (133) is connected to the front section (131) via a step and the rear section (133) is set back from the outside relative to the front section (131).

Description

[0001] The present invention relates to a stile for a ladder, - where a step or rung of the ladder can be attached to an inside of the Holmes, - where a user's hand can be placed against a front and an outside of the Holmes when climbing the ladder, - wherein the spar has a hollow profile which - a first wall on the inside of Holmes, - a second wall on the front of the Holmes, - a third wall on the outside of the Holmes and - a fourth wall on the back of the Holmes exhibits.

[0002] The invention relates to a step for a ladder as well as a ladder with stiles and steps.

[0003] Ladders with steps are a well-established design. Compared to ladders with rungs, ladders with steps offer the advantage of better stability. Therefore, some are advocating for the gradual replacement of ladders with rungs with ladders with steps.

[0004] The present invention was based on the objective of proposing a ladder that is ergonomically designed and as comfortable and safe as possible for its users. At the same time, the ladder should also be easy to manufacture and handle. To achieve this, new components, namely new stiles and new steps, had to be developed for such a ladder.

[0005] This problem was solved by stiles and / or steps according to the invention, which can be used together in a ladder according to the invention. However, it is also possible to use only the stiles or only the steps according to the invention in a ladder according to the invention.

[0006] A stile according to the invention has the following features: The first wall and the second wall form an angle of 60° to 80°, in particular 65° to 75°, and / or the third wall has a front and a rear section, and the rear section is connected to the front section via a step, the rear section being set back from the front section when viewed from the outside. Each of these two features, or both features together, results in an ergonomic shape of the stile. The stile fits better in the hand for users, and it is more comfortable to hold onto a stile according to the invention than onto a conventional stile with a box profile. A firmer grip on or around the stile is possible, which also improves the safety of the ladder users.Furthermore, the step in the third wall provides better protection against mechanical damage, particularly during transport of the ladder, by creating a connection between a rung or step and the stile. Specifically, it can be provided that, in the area of ​​the rear section of the third wall of a ladder with a stile according to the invention, structures are provided that are protected by the step or the projecting front section of the third wall.

[0007] The angle of 60° to 80°, and especially 65° to 75°, between the first and second walls is adapted to the angle between the thumb and forefinger of a hand when gripping a ladder stile. The thumb then rests essentially on the inside of the stile, i.e., the first wall, while the forefinger and all other fingers of the hand rest on the front, i.e., the second wall, and the outside, i.e., the third wall, of the ladder stile.

[0008] According to the invention, the step between the front section and the rear section of the third wall can include a middle section of the third wall. In this case, the front section and the middle section of the third wall can form an angle of 80° to 120°, particularly 105° to 115°. It is further possible for the middle section and the rear section to form an angle of 80° to 120°, particularly 105° to 115°.

[0009] A transition between the front and middle sections of the third wall, and / or a transition between the middle and rear sections of the third wall, can be designed as a curved section. In particular, such a transition makes it comfortable to place the fingers on the heel.

[0010] Furthermore, it is possible that a transition between the first wall and the second wall, and / or a transition between the third wall and the fourth wall, is provided by a first curved section, a second curved section, and / or a straight section between the first and the second curved section. For users, it is comfortable to place the bend between their thumb and forefinger at such a transition between the first and second walls when gripping the ladder stile.

[0011] A transition between the second wall and the third wall and / or a transition between the fourth wall and the first wall can also be designed in a user-friendly manner by means of a curved section.

[0012] Holes can be provided in the first wall, or preferably in the first wall and the third wall, particularly in the rear section of the third wall, through which the ends of the rungs can be inserted. The ends of rungs, or preferably of steps, can be inserted into and through these holes, which preferably have a polygonal cross-section, particularly a trapezoidal cross-section. The inserted ends of the rungs or steps can be connected to the ladder stile by crimping or crimping. If the crimp in the rear section of the third wall rests against it, the crimp is better protected against mechanical damage, especially during transport of the ladder, by the shoulder or the projecting front section of the third wall than in conventional ladders.

[0013] According to the invention, further holes, preferably slots, can be provided in the first wall of a ladder stile, into which tenons of the step can be inserted. These tenons, in addition to the ends inserted through the holes, create a further connection between the steps and the stile. This connection can be a positive-locking connection that can absorb a torque acting on the step, which has a vector in the direction of the longitudinal extension of the steps.

[0014] The problem underlying the invention is also solved by a ladder step according to the invention, which has a front step section, a middle step section, and a rear step section, which together form a single piece, or each piece is a single piece and the pieces are assembled to form the step, and in that the middle step section is a hollow chamber profile. The profile of this middle step section can be designed in the manner of a rung. This makes it possible to use this step according to the invention in ladder stiles instead of rungs with the same cross-section as the middle step section. In this way, for example, a ladder can be created which has rungs in a lower section and steps in an upper section, which can be connected to the ladder stiles in the same way.Users can pass through the lower section with the rungs when climbing the ladder, while they can stay longer on the steps provided in the upper section of the ladder to carry out work or for other reasons.

[0015] The middle step section, on the one hand, and the front and / or rear step sections, on the other, can be part of a multi-chamber profile. A step made of or with a multi-chamber profile has greater stability than a step without a hollow profile, as is currently most commonly used in step ladders.

[0016] The front step section can have a front section that is higher than a rear section located between the front section and the middle step section. The front section of the front step section faces the ladder user. When climbing the ladder, the user's shin may strike the front of this section. Due to the relatively large height of the front section, the surface area against which the shin makes contact is comparatively large. This has the advantage that, should the impact occur with considerable force, it is not as painful as it would be with a smaller surface area. For example, the front of the front step section can have a height of 25 to 35 mm, and more specifically, 28 to 32 mm.

[0017] Furthermore, it is possible that the front of the front step section is curved forward. This curvature can be circular or composed of alternating straight and circular sections.

[0018] The front section of the front step part can extend downwards beyond the rear section of the front step part and / or the rear step part.

[0019] A ladder step according to the invention can be designed such that the upper surface of the front step section and / or the upper surface of the rear step section is set off from the middle step section. A notch can thus be provided between the front step section and the middle step section and / or between the middle step section and the rear step section. This design makes it easier to add a rung to the middle step section, which allows rungs and steps to be installed in the same ladder stiles with little or no modification, thus simplifying warehousing and the production of different ladders.

[0020] A ladder according to the invention, with ladder stiles according to the invention and at least one ladder step according to the invention, can in particular be a leaning ladder, a sliding ladder, a step ladder, a three-way ladder, a step ladder, a folding step stool or the like.

[0021] Further features and advantages of exemplary embodiments of the invention are described below with reference to the drawings. The same reference numerals are used for identical or similar parts and for parts with identical or similar functions. The drawings show: Fig. 1 a section of a perspective view of the back of a ladder stile according to the invention, Fig. 2 a view of the ladder stile from below, Fig. 3 a section of a view of the inside of the ladder stile, Fig. 4. A section of a view of the outside of the ladder stile, Fig. 5 a section of a perspective view of a front face of a ladder stile according to the invention, Fig. 6 a perspective view of a ladder stage according to the invention, Fig. 7 a view of the ladder step from above, Fig. 8 a side view of the ladder step, Fig. 9 a front side of the ladder step, Fig. 10 a view of the ladder step from below, Fig. 11 a section of a perspective view of the front of a ladder according to the invention and Fig. 12 a section accordingly Fig. 11, but without one of the two ladder stiles.

[0022] It is not necessary for a device according to the invention to have all the features described below. It is also possible for a device according to the invention to have only individual features of an embodiment described below.

[0023] The in the Fig. 11 and Fig.The ladder shown in excerpts comprises, among other things, two ladder stiles 1 and ladder steps 2 connected between and to the ladder stiles 1. The ladder steps are essentially arranged between the inner surfaces of the ladder stiles.

[0024] Each ladder stile 1 is a hollow profile that, in addition to an inside, also has an outside, a front, and a back. The inside is formed by a first wall 11, the front by a second wall 12, the outside by a third wall 13, and the back by a fourth wall 14 of the hollow profile.

[0025] The first wall 11, the second wall 12, and the fourth wall 14 are flat. The third wall 13 comprises three sections 131, 132, and 133, each of which is also flat. Transitions 151, 152, 153, and 154 are provided between walls 11, 12, 13, and 14 and sections 131, 132, and 133 of the third wall 13. Transitions 152 from the second wall 12 to the third wall 13 and transition 154 from the fourth wall 14 to the first wall 11 are curved in a circular shape. The transition 151 from the first wall 11 to the second wall 12 and the transition 153 from the third wall 13 to the fourth wall 14 are subdivided from the second and fourth walls respectively into a first curved section, a straight section and a second curved section, the straight section of the transition between the third and fourth walls being larger than the section between the first and second walls.

[0026] A front section 131 of the third wall 13 and a rear section 133 of the third wall 13 are separated from each other. The rear section 133 is set back behind the front section 131. Between the two sections 131 and 133, the middle section 132 is provided, which is at an angle of approximately 105° to the front section and also at an angle of approximately 105° to the rear section.

[0027] The front section 131 and the rear section 133 lie in parallel planes. These planes are also parallel to the first wall 11. The fourth wall 14 is perpendicular to these planes and to the first wall 11. The second wall 12 is at an angle of approximately 70° to the first wall.

[0028] In the first wall 11 and in the rear section of the third wall 13, holes 16 with a trapezoidal cross-section are provided aligned with each other along the ladder stiles 1. A lower edge of the holes runs perpendicular to the front and back of the ladder stiles 1. A rear edge and a front edge run parallel to the front and back of the ladder stiles 1, and an upper edge of the holes 16 runs at an angle of approximately 65° to 75°, preferably 69° to 70°, to the front and back of the ladder stiles 1. The ends of the ladder rungs 2 are inserted through the holes 16.

[0029] In the first wall 11, i.e., on the inside of the ladder stiles 1, slots 17 are also provided, aligned lengthwise with the ladder stiles 1. Each slot 17 is offset slightly downwards and towards the second wall, i.e., towards the front of the ladder stile. Tenons of the ladder rungs 2 are inserted into these slots.

[0030] The ladder steps 2 are made of a multi-chamber hollow profile with three chambers. Each of the chambers is enclosed by a step section 21, 22, 23 of ladder step 2. The upper surfaces of the step sections 21, 22, 23 form a tread surface of ladder step 2.

[0031] The middle step section 22 is designed in the manner of a ladder rung. It has an upper wall 221, a front wall 222, a lower wall 223, and a rear wall 224. It shares the front wall 222 with the front step section 21 and the rear wall 224 with the rear step section 23. The upper surface of the upper wall, which forms part of the tread of the ladder step 2, has a ribbed texture.

[0032] The middle step section 22 extends laterally beyond the front step section 21 and the rear step section 23 by slightly more than the width of the ladder stiles 1, which is the distance from the inside to the outside of the ladder stiles 1.

[0033] It has a trapezoidal cross-section that corresponds to the cross-section of the holes 16 in the ladder stiles 1. Therefore, the ends of the middle step section can be inserted through the holes 16. An edge of the ends of the middle step sections 22 is crimped, creating a flange 225. The ladder stile 1 is positioned between this flange 225 and the ends of the front step section 21 and the rear step section 23. The ladder steps 2 are thus connected to the ladder stiles 1.

[0034] The front step section 21 abuts directly onto a front wall 222 of the middle step section 22, which it shares with the middle step section 22. A rear wall of the front step section is also part of the front wall of the middle step section 22. It also has an upper wall 211 and a front wall 212. The upper wall 211 forms the top surface of the front step section. It has grooves on its upper surface. The upper wall 211 of the front step section 21 does not abut directly onto the upper wall 221 of the middle step section 22. It terminates with a gap to the middle step section 22 and is connected to it via a transition section that extends slightly downwards and abuts the front wall of the middle step section. This creates a notch on the top surface of the ladder step 2 between the front step section 21 and the middle step section 22, extending across the entire width of the ladder step 2.

[0035] The front wall 212 is longer than the rear wall of the front step section 21. This is possible because a recess 214 is provided in a lower wall 213 of the front step section 21. This recess 214 allows the front step section 21 to be divided into a front and a rear section. The front section is higher than the rear section. Laterally projecting pins 215 are provided on the recess 214 of the lower wall 213, extending beyond the rest of the front step section. These pins 215 have a cross-section that corresponds to the cross-section of the slots 17 in the first wall of the ladder stiles. The pins 215 are inserted into these slots 17. This directly supports the front step section 21 against the ladder stiles 1. The ladder steps 2 are also thereby secured against rotation due to torques generated when climbing the ladder.

[0036] The rear step section 23 abuts directly onto the rear wall 224 of the middle step section 22, which it shares with the middle step section 22. A front wall of the rear step section 23 is also part of the rear wall 224 of the middle step section 22. The rear step section 23 also has an upper wall 231, a lower wall 233, and a rear wall 234. The upper wall 231 forms the top surface of the rear step section 23. It has grooves on its upper surface. The upper wall 231 of the rear step section 23 does not abut directly onto the upper wall 221 of the middle step section 22. It terminates with a gap to the middle step section 22 and is connected to it via a transition section that slopes downwards slightly and abuts the rear wall of the middle step section 22.This also creates a notch on the top side of ladder step 2 between the middle step part 22 and the rear step part 23, which extends across the entire width of ladder step 2.

[0037] The lower wall 233 of the rear step section 23 is parallel to the upper wall 231 of the rear step section 23 and the rear wall 234 of the rear step section 23 is parallel to the front wall of the rear step section 23 or to the rear wall of the middle step section 22.

Claims

[1] Holm (1) for a ladder, - wherein a step (2) or rung of the ladder can be attached to an inside of the ladder stile (1), - wherein a user's hand can be placed on a front and an outside of the ladder stile (1) when climbing the ladder, - wherein the ladder stile (1) has a hollow profile which - a first wall (11) on the inside of the ladder stile (1), - a second wall (12) on the front of the ladder stile (1), - a third wall (13) on the outside of the ladder stile (1) and - a fourth wall (14) on the back of the ladder stile (1) exhibits characterized by , - that the first wall (11) and the second wall (12) enclose an angle of 60° to 80°, in particular of 65° to 75°, and / or - that the third wall (13) has a front section (131) and a rear section (133) and the rear section (133) is connected to the front section (131) via a step and the rear section (133) is set back from the outside relative to the front section (131). [2] Ladder stile (1) according to claim 1, characterized by , that the step between the front section (131) and the rear section (133) of the third wall (13) comprises a middle section (132) of the third wall (13) and the front section (131) and the middle section (132) of the third wall (13) enclose an angle of 80° to 120°, in particular 105° to 115°, and the middle section (132) and the rear section (133) enclose an angle of 80° to 120°, in particular 105° to 115°. [3] Ladder stile (1) according to claim 1 or 2, characterized by, that a transition between the front section (131) and the middle section (132) and / or a transition between the middle section (132) and the rear section (133) is provided by a curved section. [4] Ladder stile (1) according to any one of claims 1 to 3, characterized by , that a transition between the first wall (11) and the second wall (12) and / or a transition between the third wall (13) and the fourth wall (14) has a first curved section, a second curved section and a straight section between the first and the second curved section. [5] Ladder stile (1) according to any one of claims 1 to 4, characterized by , that a transition between the second wall (12) and the third wall (13) and / or a transition between the fourth wall (14) and the first wall (11) is provided by a curved section. [6] Ladder stile (1) according to any one of claims 1 to 5, characterized by, that holes (16) are provided in the first wall (11) and the third wall (13) through which the ends of the steps (2) can be inserted. [7] Ladder stile (1) according to any one of claims 1 to 6, characterized by , that in the first wall (11) further holes, preferably slots (17), are provided into which pins (215) of the step (2) can be inserted. [8] Step (2) for a ladder, characterized by , that the ladder step (2) has a front step part (21), a middle step part (22) and a rear step part (23) which together form a piece or each a piece and the pieces are assembled to form the ladder step (2), and that the middle step part (22) is a hollow chamber profile. [9] Ladder stage (2) according to claim 8, characterized by , that the middle step part (22) on the one hand and the front step part (21) and / or the rear step part (23) on the other hand are parts of a multi-chamber profile. [10] Conductor stage (2) according to claim 8 or 9, characterized by , that the front step part (21) has a front section which is higher than a rear section which is provided between the front section and the middle step part (22). [11] Conductor stage (2) according to any one of claims 8 to 10, characterized by , that the front step part (21) has a front surface which has a height of 25 to 35 mm, in particular of 28 to 32 mm. [12] Conductor stage (2) according to any one of claims 8 to 11, characterized by , that the front step part (21) has a front side and the front side of the front step part (21) is curved forward. [13] Ladder stage (2) according to claim 12, characterized by , that the front section of the front step part (21) extends downwards beyond the rear section of the front step part and / or the rear step part. [14] Conductor stage (2) according to any one of claims 8 to 12, characterized by, that the top of the front step section (21) and / or the top of the rear step section (23) is set off from the middle step section (22). [15] Ladders, in particular extension ladders, sliding ladders, step ladders, three-way ladders, step ladders, folding step stools or similar, with at least two stiles and steps arranged between the stiles, characterized by , that the stiles are designed as ladder stiles (1) according to one of claims 1 to 7 and / or the steps as ladder steps (2) according to one of claims 8 to 14.

Images