Folding ladder with hidden handrails

Abstract

The utility model discloses a folding ladder with hidden handrails, which comprises a ladder assembly, the ladder assembly comprises a main ladder assembly and a support ladder assembly, and the support ladder assembly is rotatably connected to the main ladder assembly; the pedal assembly is rotationally arranged on the main ladder assembly and can be detachably connected with the supporting ladder assembly in a clamping manner; the two handrail assemblies are sequentially and rotationally connected to the two opposite ends of the main ladder assembly and the pedal assembly respectively and are in transmission connection with the pedal assembly respectively. According to the folding ladder with the hidden handrails, the pedal assemblies drive the two handrail assemblies to be synchronously folded or unfolded, the two handrail assemblies can be synchronously folded and hidden on the two sides of the main ladder frame, and the problems that handrails of existing folding ladders occupy extra space and are inconvenient to store and transport are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology, and in particular to a folding ladder with a hidden handrail. Background Technology

[0002] Ladders, as an auxiliary tool for climbing, are primarily used for people to perform tasks at heights. However, since existing ladders generally consist of a frame and rungs mounted on the frame, lacking other safety features, a loss of balance during use can easily lead to falls from heights. To prevent falls, handrails are usually installed on ladders. However, installing handrails takes up extra space, making them inconvenient for storage, packaging, and transportation.

[0003] Chinese utility model patent CN209637668U discloses a folding household ladder, including two parallel front bars and two parallel rear bars, with each pair of front and rear bars hinged to the other. Telescopic handrails are connected to the top of the two front bars. Each telescopic handrail includes two telescopic rods inserted into the front bars, with a crossbar connected to the top of each rod. A pull rod is also included. The front bars have travel grooves, and one end of the pull rod passes through the travel groove and is hinged to the end of the telescopic rod, while the other end is hinged to the rear bar. Although the handrails in this technical solution are telescopic, they occupy extra space, making storage and transportation inconvenient. Therefore, a folding ladder with hidden handrails is provided to solve the above problems. Utility Model Content

[0004] One of the purposes of this utility model is to provide a folding ladder with a hidden handrail, so as to solve the problem that the handrail of the existing folding ladder occupies extra space and is inconvenient for storage and transportation.

[0005] The present invention, a folding ladder with a hidden handrail, can be achieved through the following technical solution:

[0006] This utility model discloses a folding ladder with hidden handrails, comprising a ladder frame assembly, which includes a main ladder frame and a supporting ladder frame, the supporting ladder frame being rotatably connected to the main ladder frame; a step assembly, which is rotatably mounted on the main ladder frame and can be detachably engaged with the supporting ladder frame; and two handrail assemblies, which are rotatably connected to the opposite ends of the main ladder frame and the step assembly respectively, and are respectively drivenly connected to the step assembly. The step assembly can drive the two handrail assemblies to perform synchronous folding or unfolding operations, and the two handrail assemblies can be synchronously folded and hidden on both sides of the main ladder frame.

[0007] In one embodiment, the main ladder frame includes a ladder frame body; a plurality of first fixing rods fixedly disposed on the ladder frame body in sequence; and two connecting members symmetrically fixedly disposed on the ladder frame body, wherein the two ends of the supporting ladder frame are respectively rotatably connected to the corresponding connecting members.

[0008] In one embodiment, the main body of the ladder frame has an inverted U-shaped structure, and when the main body of the ladder frame and the supporting ladder frame are unfolded, the main body of the ladder frame and the supporting ladder frame form an inverted V-shape.

[0009] In one embodiment, the support ladder frame includes two parallel support ladder rods, which are rotatably connected to the ladder frame body via corresponding connectors; a second fixing rod is fixedly disposed between the two support ladder rods, and the tread assembly can be detachably engaged with the second fixing rod.

[0010] In one embodiment, anti-slip pads are fixedly provided at the lower ends of both the ladder frame body and the supporting ladder rod.

[0011] In one embodiment, the pedal assembly includes a connecting pedal rotatably mounted on the ladder frame body and detachably engaged with the second fixing rod; two first connecting rods movably mounted on opposite ends of the connecting pedal; and a plurality of pedal bodies rotatably connected to the two first connecting rods, each rotatably connected to a corresponding first fixing rod.

[0012] In one embodiment, a rotating shaft is provided through both the connecting pedal and the pedal body, and the two ends of the rotating shaft are respectively rotatably mounted on the corresponding first connecting rod.

[0013] In one embodiment, the connecting pedal is provided with symmetrical slots at opposite ends, and the slots are detachably engaged with the second fixing rod.

[0014] In one embodiment, the handrail assembly includes a plurality of second connecting rods and two handrail bodies; the two opposing second connecting rods are respectively movably connected to the main ladder frame and the tread assembly; the two handrail bodies are arranged opposite to each other and are respectively movably connected to the plurality of second connecting rods.

[0015] In one embodiment, the folding ladder with a hidden handrail of the present invention further includes at least one support rod, one end of which is movably connected to the support ladder frame, and the other end of which is movably connected to the pedal assembly.

[0016] Compared with the prior art, the beneficial effects of this utility model of a folding ladder with a hidden handrail are as follows:

[0017] This utility model discloses a folding ladder with hidden handrails. The two handrail assemblies are folded or unfolded simultaneously by a pedal assembly. When folded, the two handrail assemblies are hidden on both sides of the main ladder frame, effectively solving the problem that the handrails of existing folding ladders occupy extra space and are inconvenient for storage and transportation. The connecting pedal and the pedal body in the pedal assembly are supported by a fixed rod and a rotating shaft, respectively, which greatly improves the load-bearing capacity of the connecting pedal and the pedal body. At the same time, the support rod supports the pedal assembly, which also improves the load-bearing capacity of the connecting pedal and the pedal body to a certain extent. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of a folding ladder with a hidden handrail in its open state according to this utility model;

[0020] Figure 2 yes Figure 1 The diagram shown is a structural schematic of a folding ladder with a hidden handrail in its open state from another perspective.

[0021] Figure 3 yes Figure 1 The diagram shown is a structural schematic of a folding ladder with a hidden handrail in its folded state according to this utility model.

[0022] Figure 4 yes Figure 1 The exploded structural diagram of a folding ladder with a hidden handrail according to this utility model is shown, including a footboard assembly;

[0023] Figure 5 yes Figure 4 The diagram shows the structure of the pedal assembly.

[0024] The diagram shows: 10, folding ladder; 11, ladder frame assembly; 111, main ladder frame; 1111, ladder frame body; 11111, first anti-slip foot pad; 1112, first fixing rod; 1113, connector; 112, supporting ladder frame; 1121, supporting ladder rod; 11211, second anti-slip foot pad; 1122, second fixing rod; 12, pedal assembly; 121, connecting pedal; 1211, first rotating hole; 1212, first rotating shaft; 1213, slot; 122, first connecting rod; 1221, first connecting hole; 123, pedal body; 1231, second rotating hole; 1232, second rotating shaft; 13, handrail assembly; 131, second connecting rod; 132, handrail body; 14, support rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] Please see Figures 1-4 As shown, the present invention discloses a folding ladder 10 with hidden handrails, which mainly includes a ladder frame assembly 11, a step assembly 12, two handrail assemblies 13, and at least one support rod 14. The ladder frame assembly 11 serves as the main support and is capable of folding for convenient storage and transportation. The step assembly 12 is movably mounted on the ladder frame assembly 11 and can be folded relative to the ladder frame assembly 11. The two handrail assemblies 13 are rotatably connected to the opposite ends of the ladder frame assembly 11 and the step assembly 12, and are connected to the step assembly 12 in a transmission manner. The step assembly 12 can drive the two handrail assemblies 13 to fold or unfold synchronously. One end of the at least one support rod 14 is movably connected to the ladder frame assembly 11, and the other end is movably connected to the step assembly 12, providing support for the unfolded step assembly 12.

[0028] Please see Figures 1-4As shown, in this embodiment, the ladder frame assembly 11 includes a main ladder frame 111 and a supporting ladder frame 112; the main ladder frame 111 is the supporting body; the supporting ladder frame 112 is rotatably mounted on the main ladder frame 111, and it supports the main ladder frame 111; when the ladder frame assembly 11 is unfolded, the ladder frame body 111 and the supporting ladder frame 112 form an inverted V shape.

[0029] Please see Figure 4 As shown, in this embodiment, the main ladder frame 111 includes a ladder frame body 1111, a plurality of first fixing rods 1112, and two connecting members 1113. The ladder frame body 1111 has an inverted U-shaped structure. The plurality of first fixing rods 1112 are sequentially fixedly arranged on the ladder frame body 1111. The two connecting members 1113 are symmetrically fixedly arranged on the ladder frame body 1111, and the two ends of the supporting ladder frame 112 are rotatably connected to the corresponding connecting members 1113. The supporting ladder frame 112 can be unfolded or folded relative to the ladder frame body 1111 through the two connecting members 1113. Specifically, two first anti-slip pads 11111 are fixedly arranged at the lower end of the ladder frame body 1111. The first anti-slip pads 11111 increase the contact friction between the ladder frame body 1111 and the ground, thereby improving the anti-slip performance of the main ladder frame 111.

[0030] Please see Figure 4 As shown, in this embodiment, the support ladder frame 112 includes two support ladder rods 1121 and a second fixed rod 1122. The two support ladder rods 1121 are arranged in parallel and are rotatably connected to the main ladder frame 111 via corresponding connectors 1113. The second fixed rod 1122 is fixedly disposed between the two support ladder rods 1121 and can be detachably engaged with the pedal assembly 12. Specifically, the lower ends of the two support ladder rods 1121 are respectively fixedly provided with second anti-slip pads 11211. The second anti-slip pads 11211 increase the contact friction between the support ladder rods 1121 and the ground, thereby improving the anti-slip performance of the support ladder rods 1121.

[0031] Please see Figures 1-5 As shown, in this embodiment, the pedal assembly 12 includes a connecting pedal 121, two first connecting rods 122, and multiple pedal bodies 123; the connecting pedal 121 is rotatably mounted on the main ladder frame 111 and detachably engaged with the second fixed rod 1122 supporting the ladder frame 112; the two first connecting rods 122 are respectively movably mounted on opposite ends of the connecting pedal 121, and both are capable of rotating relative to the connecting pedal 121; the two ends of the multiple pedal bodies 123 are respectively rotatably connected to the two first connecting rods 122 and respectively rotatably connected to the corresponding first fixed rods 1112.

[0032] Please see Figure 4 and Figure 5As shown, specifically, first rotating holes 1211 are respectively provided on the opposite ends of the connecting pedal 121, and the two ends of the corresponding first fixing rod 1112 are respectively inserted into the corresponding first rotating holes 1211, so that the connecting pedal 121 can rotate relative to the corresponding first fixing rod 1112; a first rotating shaft 1212 is provided through the connecting pedal 121, and the two ends of the first rotating shaft 1212 are respectively rotatably mounted on the corresponding first connecting rod 122; slots 1213 are symmetrically provided on the opposite ends of the connecting pedal 121, and the slots 1213 are detachably engaged with the second fixing rod 1122, so that the main ladder frame 111 and the supporting ladder frame 112 are relatively fixedly connected. Specifically, a plurality of first connecting holes 1221 are provided through the first connecting rod 122, and the two ends of the pedal 121 and the pedal body 123 are respectively rotatably connected to the corresponding first connecting holes 1221; the pedal body 123 is provided with second rotating holes 1231 at opposite ends, and the two ends of the corresponding first fixing rod 1112 are respectively provided through the corresponding second rotating holes 1231, so that the pedal body 123 can rotate relative to the corresponding first fixing rod 1112; a second rotating shaft 1232 is provided through the pedal body 123, and the two ends of the second rotating shaft 1232 are respectively rotatably provided in the corresponding first connecting holes 1221.

[0033] Please see Figures 1-4 As shown, the handrail assembly 13 includes multiple second connecting rods 131 and two handrail bodies 132. The two opposing second connecting rods 131 are movably connected to the main ladder frame 111 and the footboard assembly 12, respectively. The two handrail bodies 132 are arranged opposite each other and movably connected to the multiple second connecting rods 131. The footboard assembly 12 synchronously drives the two handrail bodies 132 to unfold or fold through the multiple second connecting rods 131, thereby allowing the two handrail bodies 132 to be hidden and folded along the side of the main ladder frame 111. In this embodiment, two pairs of second connecting rods 131 are movably connected to the main ladder frame 111 and the footboard assembly 12, respectively. One pair of second connecting rods 131 is movably connected to the connecting footboard 121 and the main ladder frame 111 in sequence, while the other pair of second connecting rods 131 is movably connected to one of the footboard bodies 123 and the main ladder frame 111 in sequence.

[0034] Please see Figures 1-4 As shown, in this embodiment, the two ends of a support rod 14 are movably connected to the support ladder rod 1121 and the first connecting rod 122, respectively. The support rod 14 supports the pedal assembly 12, thereby improving the load-bearing capacity of the pedal assembly 12 to a certain extent. In other embodiments, the number of support rods 14 can be two, three, or other multiples, and the specific number can be set according to actual needs.

[0035] It should be noted that the specific working process of the folding ladder 10 with hidden handrail of this utility model is as follows: When the folding ladder 10 needs to be unfolded for use, the main ladder frame 111 and the supporting ladder frame 112 are first unfolded relative to each other. Then, the connecting pedal 121 is rotated so that it is engaged with the second fixed rod 1122. At the same time, the connecting pedal 121 drives multiple pedal bodies 123 and handrail assembly 13 to unfold synchronously through the two first connecting rods 122, thereby realizing the unfolding operation of the folding ladder 10. When the folding ladder 10 needs to be stored and transported, the connecting pedal 121 is first rotated so that it is disengaged from the second fixed rod 1122. Then, the connecting pedal 121 is rotated to fold. At the same time, the connecting pedal 121 drives multiple pedal bodies 123 and handrail assembly 13 to fold synchronously through the two first connecting rods 122, so that the handrail assembly 13 is hidden and folded on the side of the main ladder frame 111, thereby realizing the folding operation of the folding ladder 10.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A folding ladder with a concealed handrail, characterized in that, include: A ladder frame assembly, comprising a main ladder frame and a supporting ladder frame, wherein the supporting ladder frame is rotatably connected to the main ladder frame; A pedal assembly, which is rotatably mounted on the main ladder frame and can be detachably engaged with the supporting ladder frame; Two handrail assemblies are rotatably connected to the opposite ends of the main ladder frame and the pedal assembly, respectively, and are respectively drivenly connected to the pedal assembly. The pedal assembly can drive the two handrail assemblies to fold or unfold synchronously. The two handrail assemblies can be folded and hidden on both sides of the main ladder frame synchronously.

2. A folding ladder with a concealed handrail according to claim 1, characterized in that, The main ladder frame includes a ladder frame body; a plurality of first fixing rods fixedly arranged on the ladder frame body in sequence; and two connecting members symmetrically fixedly arranged on the ladder frame body, with the two ends of the supporting ladder frame rotatably connected to the corresponding connecting members.

3. A folding ladder with a concealed handrail according to claim 2, characterized in that, The main body of the ladder frame has an inverted U-shaped structure. When the main body of the ladder frame and the supporting ladder frame are unfolded, the main body of the ladder frame and the supporting ladder frame form an inverted V-shape.

4. A folding ladder with a concealed handrail according to claim 2, characterized in that, The support ladder frame includes two parallel support ladder rods, which are rotatably connected to the ladder frame body through corresponding connectors; a second fixing rod is fixedly disposed between the two support ladder rods, and the tread assembly can be detachably engaged with the second fixing rod.

5. A folding ladder with a concealed handrail according to claim 4, characterized in that, Anti-slip pads are fixedly installed at the lower ends of both the main body of the ladder frame and the supporting ladder rods.

6. A folding ladder with a concealed handrail according to claim 4, characterized in that, The pedal assembly includes a connecting pedal rotatably mounted on the ladder frame body and detachably engaged with the second fixed rod; two first connecting rods movably mounted on opposite ends of the connecting pedal; and a plurality of pedal bodies rotatably connected to the two first connecting rods, each rotatably connected to a corresponding first fixed rod.

7. A folding ladder with a concealed handrail according to claim 6, characterized in that, A rotating shaft is provided through both the connecting pedal and the pedal body, and the two ends of the rotating shaft are respectively rotatably mounted on the corresponding first connecting rod.

8. A folding ladder with a concealed handrail according to claim 7, characterized in that, The connecting pedal is symmetrically provided with slots at both ends, and the slots are detachably engaged with the second fixing rod.

9. A folding ladder with a concealed handrail according to claim 1, characterized in that, The handrail assembly includes multiple second connecting rods and two handrail bodies; the two opposing second connecting rods are movably connected to the main ladder frame and the tread assembly, respectively; the two handrail bodies are arranged opposite to each other and are movably connected to the multiple second connecting rods, respectively.

10. A folding ladder with a concealed handrail according to any one of claims 1-9, characterized in that, It also includes at least one support rod, one end of which is movably connected to the support ladder frame and the other end of which is movably connected to the pedal assembly.

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