Multipurpose ladder

Abstract

The utility model relates to the field of ladders, in particular to a multipurpose ladder. The ladder comprises a middle ladder, a side ladder a, a side ladder b, a bolt connecting assembly and a lock catch connecting assembly, the bolt connecting assembly is used for rotationally connecting or fixedly connecting the middle ladder with the side ladder a and the side ladder b by adjusting the fastening degree, and during fastening connection, the middle ladder is horizontally distributed, and the side ladder a and the side ladder b are vertically arranged, or the middle ladder, the side ladder a and the side ladder b are completely unfolded to be in a straight state; the lock catch connecting assembly comprises a connecting belt arranged on the middle ladder and a connecting buckle arranged on the side ladder a, and when the connecting belt and the connecting buckle are connected in a lock catch mode, the side ladder b is folded to the inner side of the middle ladder and distributed in a herringbone shape with the side ladder a, or the side ladder a is folded to the inner side of the middle ladder and the side ladder b is folded to the outer side of the middle ladder, so that the middle ladder, the side ladder a and the side ladder b are completely folded to be in a straight state. The multifunctional ladder can be converted into a herringbone ladder and other various use forms so as to meet different use requirements.

Description

Technical Field

[0001] The utility model relates to the field of ladders, in particular to a multi-functional ladder. Background Art

[0002] A ladder is a daily-use tool. It is made of two thick long poles as sides, with crossbars suitable for climbing across in the middle, and is used for climbing heights.

[0003] Some ladders can adjust the overall length by telescopic adjustment to meet the usage requirements at different heights. However, the ladder itself needs to lean against a position that can provide support, such as a wall. Without support, a simple telescopic ladder cannot be used. Summary of the Utility Model

[0004] The purpose of the utility model is to address the problems in the background art and propose a multi-functional ladder that can be converted into an "A" - shaped ladder and other multiple usage forms to meet different usage requirements.

[0005] The technical solution of the utility model is as follows: A multi-functional ladder includes a middle ladder, side ladder a, side ladder b, a bolt connection assembly, and a buckle connection assembly; the bolt connection assembly rotates or tightly connects the middle ladder with side ladder a and side ladder b respectively by adjusting the tightening degree. When tightly connected, the middle ladder is horizontally distributed, and side ladder a and side ladder b are both vertically arranged, or the middle ladder, side ladder a, and side ladder b are fully extended to a straight state; the buckle connection assembly includes a connecting belt arranged on the middle ladder and a connecting buckle arranged on side ladder a. When the connecting belt and the connecting buckle are buckled and connected, side ladder b is folded to the inner side of the middle ladder and forms an "A" - shaped distribution with side ladder a, or side ladder a is folded to the inner side of the middle ladder and side ladder b is folded to the outer side of the middle ladder to fully fold the middle ladder, side ladder a, and side ladder b to a straight state.

[0006] Preferably, the middle ladder includes two parallel ladder bars a and crossbars a connecting the two ladder bars a. The crossbars a are perpendicular to the ladder bars a, and multiple crossbars a are arranged side by side along the length direction of the ladder bars a; side ladder a includes two parallel ladder bars b and crossbars b connecting the two ladder bars b. The crossbars b are perpendicular to the ladder bars b, and multiple crossbars b are arranged side by side along the length direction of the ladder bars b; side ladder b includes two parallel ladder bars c and crossbars c connecting the two ladder bars c. The crossbars c are perpendicular to the ladder bars c, and multiple crossbars c are arranged side by side along the length direction of the ladder bars c.

[0007] Preferably, the two ladder bars b are respectively located outside the two ladder bars a, and the two ladder bars c are respectively located inside the two ladder bars a. One end of the ladder bar b is connected to one side of the left end of the ladder bar a through the bolt connection assembly, and one end of the ladder bar c is connected to one side of the right end of the ladder bar a through the bolt connection assembly.

[0008] Preferably, the other end of the ladder bar b is provided with an outward - folded arc - shaped support foot a, and the other end of the ladder bar c is provided with an outward - folded arc - shaped support foot b.

[0009] Preferably, when the middle ladder is horizontally distributed and the side ladders a and b are both vertically arranged, inclined support rods are connected between the ladder rod a and the side ladders a and b through bolt connection assemblies.

[0010] Preferably, the connecting belt is arranged on the middle cross bar a, and the connecting buckle is arranged on the innermost cross bar b.

[0011] Preferably, the bolt connection assembly includes a bolt and a wing nut. The wing nut is threadedly connected to the bolt, and insertion holes for the bolt to pass through are provided on the ladder rods a, b, and c.

[0012] Preferably, through holes a are provided at both ends of the ladder rod a, a through hole b corresponding to the through hole a at one end of the ladder rod a is provided on the ladder rod b, and a through hole c corresponding to the through hole a at the other end of the ladder rod a is provided on the ladder rod c.

[0013] Compared with the prior art, the present utility model has the following beneficial technical effects:

[0014] The present utility model can be converted into an "A" - shaped ladder and various other usage forms to meet different usage requirements, which are specifically divided into the following four types:

[0015] 1. After being converted into an "A" - shaped ladder, it can be used without leaning against a wall.

[0016] 2. When the climbing height in the application scenario is relatively high, the entire ladder is fully extended to the longest state.

[0017] 3. When not in use, it is fully folded to the shortest state, which is convenient for storage.

[0018] 4. The ladder is converted into a structure in the form of a clothes hanger, which is convenient for daily clothes drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the embodiment of the present utility model with additional support feet;

[0021] Figure 3 is a schematic structural diagram of the present utility model when folded into an "A" - shaped ladder;

[0022] Figure 4 is a schematic structural diagram of the present utility model in a fully straight - extended state;

[0023] Figure 5 is a schematic structural diagram of the present utility model in a fully folded state;

[0024] Figure 6It is a structural schematic diagram of a bolt connection assembly.

[0025] Reference numerals: 11, ladder rod a; 111, through hole a; 12, cross bar a; 13, connecting belt; 21, ladder rod b; 211, through hole b; 22, cross bar b; 23, connecting buckle; 24, support leg a; 31, ladder rod c; 32, cross bar c; 33, support leg b; 4, support rod; 5, bolt connection assembly; 51, bolt; 52, wing nut. Detailed implementation mode

[0026] Embodiment 1

[0027] This embodiment provides a multi-purpose ladder, including a middle ladder, a side ladder a, a side ladder b, a bolt connection assembly 5 and a buckle connection assembly.

[0028] The middle ladder includes two parallelly distributed ladder rods a 11 and a cross bar a 12 connecting the two ladder rods a 11. The cross bar a 12 is perpendicular to the ladder rod a 11, and a plurality of cross bars a 12 are arranged side by side along the length direction of the ladder rod a 11; the side ladder a includes two parallelly distributed ladder rods b 21 and a cross bar b 22 connecting the two ladder rods b 21. The cross bar b 22 is perpendicular to the ladder rod b 21, and a plurality of cross bars b 22 are arranged side by side along the length direction of the ladder rod b 21; the side ladder b includes two parallelly distributed ladder rods c 31 and a cross bar c 32 connecting the two ladder rods c 31. The cross bar c 32 is perpendicular to the ladder rod c 31, and a plurality of cross bars c 32 are arranged side by side along the length direction of the ladder rod c 31.

[0029] Through holes a 111 are provided at both ends of the ladder rod a 11, a through hole b 211 corresponding to the through hole a 111 at one end of the ladder rod a 11 is provided on the ladder rod b 21, and a through hole c corresponding to the through hole a 111 at the other end of the ladder rod a 11 is provided on the ladder rod c 31.

[0030] The two ladder rods b 21 are respectively located outside the two ladder rods a 11, the two ladder rods c 31 are respectively located inside the two ladder rods a 11, one end of the ladder rod b 21 is connected to one side of the left end of the ladder rod a 11 through the bolt connection assembly 5, and one end of the ladder rod c 31 is connected to one side of the right end of the ladder rod a 11 through the bolt connection assembly 5.

[0031] As Figure 6 shown, the bolt connection assembly 5 includes a bolt 51 and a wing nut 52, and the wing nut 52 is threadedly connected to the bolt 51.

[0032] The ladder bars a11, b21 and c31 are all provided with insertion holes for the bolts 51 to pass through. Multiple insertion holes can be designed at different positions to facilitate connecting the bolt connection assembly 5 at different positions. When the middle ladder, side ladder a and side ladder b are fully unfolded, the transformation of ladders with different maximum lengths can be achieved. The bolt connection assembly 5 rotatably connects or tightly connects the middle ladder to side ladder a and side ladder b respectively by adjusting the tightening degree. When rotatably connecting, the butterfly nut 52 does not lock the bolt 51, and the ladder bars can be rotationally adjusted through the bolt 51; when tightly connecting, the butterfly nut 52 is tightened to the side of the cross bar, and the bolt 51 and the butterfly nut 52 tightly connect the corresponding two cross bars. When tightly connecting, it is divided into the following two usage states:

[0033] (1) As Figure 1 shown, the middle ladder is horizontally distributed and side ladder a and side ladder b are both vertically arranged. At this time, the whole ladder can be used as a clothes hanger, and clothes can be hung on the ladder bars a11, cross bar a12, cross bar b22 and cross bar c32;

[0034] (2) As Figure 4 shown, the middle ladder, side ladder a and side ladder b are fully unfolded to a flat state, enabling the ladder to be used in its longest state. At this time, screws can be inserted at the corresponding positions of the through holes a111 and b211 and at the positions corresponding to the through holes a111 and c, thereby enhancing the overall connection reliability of the ladder.

[0035] The buckle connection assembly includes a connecting belt 13 provided on the middle ladder and a connecting buckle 23 provided on side ladder a. The connecting belt 13 and the connecting buckle 23 adopt existing structures that can achieve buckling, such as the buckles and backpack straps on schoolbags. The connecting belt 13 is provided on the middle cross bar a12, and the connecting buckle 23 is provided on the innermost cross bar b22. When the connecting belt 13 and the connecting buckle 23 are buckled, it is divided into the following two usage states:

[0036] (1) As Figure 3 shown, side ladder b is folded to the inside of the middle ladder and is distributed in a "V" shape with side ladder a. At this time, the whole ladder is a "V" ladder and can be directly converted into a "V" ladder without leaning against the wall; at the same time, when any one of side ladder a and side ladder b is disassembled, a "V" ladder can also be formed.

[0037] (2) As Figure 5 shown, side ladder a is folded to the inside of the middle ladder and side ladder b is folded to the outside of the middle ladder to completely fold the middle ladder, side ladder a and side ladder b to a flat state. At this time, the bolt connection assembly 5 connecting side ladder a and the middle ladder is removed and replaced with a screw. The screw can connect side ladder a and the middle ladder, but will not protrude to the inside of the middle ladder, preventing it from affecting the folding process of side ladder b to the inside of the middle ladder. The connecting belt 13 is wound around the cross bar and finally buckled with the connecting buckle 23 to achieve the folding of the whole ladder, occupying a small space and being convenient for storage.

[0038] This embodiment can be converted into an A-frame ladder and various other usage forms to meet different usage requirements. After being converted into an A-frame ladder, it can be used without leaning against a wall. When there is a relatively high climbing height at the application site, the entire ladder is fully extended to its longest state, and when not in use, it is fully folded to its shortest state. The ladder can also be converted into a structure in the form of a clothes hanger, which is convenient for daily clothes drying.

[0039] Embodiment 2

[0040] This embodiment provides a multi-purpose ladder. Compared with Embodiment 1, in this embodiment, as Figure 2 shown, an outwardly folded arc-shaped support foot a24 is provided at the other end of the ladder rod b21, and an outwardly folded arc-shaped support foot b33 is provided at the other end of the ladder rod c31, which improves the stability during placement.

[0041] Embodiment 3

[0042] As Figure 1 and Figure 2 shown, for a multi-purpose ladder provided in this embodiment, compared with Embodiment 1 and Embodiment 2, in this embodiment, when the middle ladder is horizontally distributed and the side ladders a and b are both vertically arranged, inclined support rods 4 are connected between the ladder rod a11 and the side ladders a and b through bolt connection assemblies 5, which improves the overall structural stability and reliability.

[0043] The above has described in detail the embodiments of the present invention with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art to which the present invention pertains.

Claims

1. A multi-purpose ladder, characterized in that, Comprising: Middle ladder; Side ladder a; Side ladder b; A bolt connection assembly (5), which rotatably connects or tightly connects the middle ladder to the side ladder a and the side ladder b respectively by adjusting the tightening degree. When tightly connected, the middle ladder is horizontally distributed and the side ladder a and the side ladder b are both vertically arranged, or the middle ladder, the side ladder a and the side ladder b are fully unfolded to a flat state; A buckle connection assembly, which includes a connecting belt (13) provided on the middle ladder and a connecting buckle (23) provided on the side ladder a. When the connecting belt (13) and the connecting buckle (23) are buckled, the side ladder b is folded to the inner side of the middle ladder and is distributed in a "person" shape with the side ladder a, or the side ladder a is folded to the inner side of the middle ladder and the side ladder b is folded to the outer side of the middle ladder to fully fold the middle ladder, the side ladder a and the side ladder b to a flat state.

2. The multi-purpose ladder according to claim 1, characterized in that, The middle ladder includes two parallel ladder bars a (11) and a cross bar a (12) connecting the two ladder bars a (11). The cross bar a (12) is perpendicular to the ladder bar a (11), and multiple cross bars a (12) are arranged side by side along the length direction of the ladder bar a (11); the side ladder a includes two parallel ladder bars b (21) and a cross bar b (22) connecting the two ladder bars b (21). The cross bar b (22) is perpendicular to the ladder bar b (21), and multiple cross bars b (22) are arranged side by side along the length direction of the ladder bar b (21); the side ladder b includes two parallel ladder bars c (31) and a cross bar c (32) connecting the two ladder bars c (31). The cross bar c (32) is perpendicular to the ladder bar c (31), and multiple cross bars c (32) are arranged side by side along the length direction of the ladder bar c (31).

3. The multi-purpose ladder according to claim 2, characterized in that, The two ladder bars b (21) are respectively located outside the two ladder bars a (11), and the two ladder bars c (31) are respectively located inside the two ladder bars a (11). One end of the ladder bar b (21) is connected to one side of the left end of the ladder bar a (11) through the bolt connection assembly (5), and one end of the ladder bar c (31) is connected to one side of the right end of the ladder bar a (11) through the bolt connection assembly (5).

4. The multi-purpose ladder according to claim 3, characterized in that, The other end of the ladder bar b (21) is provided with an outwardly folded arc-shaped support foot a (24), and the other end of the ladder bar c (31) is provided with an outwardly folded arc-shaped support foot b (33).

5. A multi-purpose ladder according to claim 3 or 4, characterized in that, When the middle ladder is horizontally distributed and the side ladder a and the side ladder b are both vertically arranged, inclined support rods (4) are connected between the ladder bar a (11) and the side ladder a and the side ladder b through the bolt connection assembly (5).

6. The multi-purpose ladder according to claim 5, wherein, The connecting belt (13) is provided on the middle cross bar a (12), and the connecting buckle (23) is provided on the innermost cross bar b (22).

7. The multi-purpose ladder according to claim 3, characterized in that, The bolt connection assembly (5) includes a bolt (51) and a butterfly nut (52). The butterfly nut (52) is threadedly connected to the bolt (51), and through holes for the bolt (51) to pass through are provided on the ladder bar a (11), the ladder bar b (21) and the ladder bar c (31).

8. A multi-purpose ladder according to claim 7, characterized in that, Through holes a (111) are provided at both ends of the ladder bar a (11), a through hole b (211) corresponding to the through hole a (111) at one end of the ladder bar a (11) is provided on the ladder bar b (21), and a through hole c corresponding to the through hole a (111) at the other end of the ladder bar a (11) is provided on the ladder bar c (31).

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