A hidden ladder with foldable steps

Abstract

The present invention discloses a hidden ladder with foldable pedals, comprising a ladder frame assembly, a fixing seat and a ladder frame driver; one end of the ladder frame assembly is rotatably hinged to the fixing seat and the ladder frame driver respectively, and the other end of the ladder frame assembly is a free end; the fixing end of the ladder frame driver is hinged to the fixing seat, and the moving end of the ladder frame driver is hinged to the ladder frame assembly; a plurality of foldable pedal assemblies are arranged on the ladder frame assembly, and the pedal assemblies are connected to the pedal drive assembly; a retractable dust cover is arranged between the pedal assemblies. The hidden ladder with foldable pedals of the present invention can fold the pedals and hide them for storage, thereby reducing space occupation; the ladder frame driver can be used to quickly and conveniently lift and lower the ladder across floors; after the pedals are folded by the pedal driver, the ladder can be used as a slide, which makes it more convenient and labor-saving to transport goods between floors.

Description

Technical Field

[0001] The invention relates to the technical field of ladders, in particular to a hidden ladder with foldable pedals. Background Art

[0002] Ladders are essential climbing tools in daily life. Existing ladders are generally fixed and mobile. Fixed ladders have the disadvantage of occupying a large area, and mobile ladders are usually light and convenient for mobility, which is not conducive to heavy loads. With the development of technology, foldable hidden ladders have also appeared on the market, but they are usually hidden by manual operation and overall folding. In order to reduce the space occupied and manpower after folding, they are usually thin and light, which is not conducive to heavy loads; and existing ladders cannot easily achieve multi-story (such as the first floor spanning the third floor) climbing operations. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a hidden ladder with foldable pedals, the pedals can be folded and hidden for storage to reduce space occupancy; the ladder frame driver can be used to quickly and conveniently lift and lower the ladder across floors; after the pedals are folded by the pedal driver, the ladder can be used as a slide, making it more convenient and labor-saving to transport goods between floors.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A hidden ladder with foldable steps, characterized in that it comprises a ladder frame assembly (10), a fixing seat (20) and a ladder frame driver (30); one end of the ladder frame assembly (10) is rotatably hinged to the fixing seat (20) and the ladder frame driver (30), and the other end of the ladder frame assembly (10) is a free end;

[0006] The fixed end of the ladder frame driver (30) is hinged to the fixed seat (20), and the moving end of the ladder frame driver (30) is hinged to the ladder frame assembly (10);

[0007] A plurality of foldable pedal assemblies (40) are arranged on the ladder frame assembly (10), and the pedal assemblies (40) are connected to a pedal driving assembly (50).

[0008] Preferably, the ladder frame assembly (10) comprises a left side plate (11) and a right side plate (12) arranged parallel to each other, and a connecting rod (13) is arranged between the left side plate (11) and the right side plate (12); and the pedal assembly (40) is arranged between the left side plate (11) and the right side plate (12).

[0009] Preferably, the pedal assembly (40) includes a first pedal (41) and a second pedal (42), wherein adjacent ends of the first pedal (41) and the second pedal (42) are rotatably hinged to each other, and the other end of the first pedal (41) is rotatably hinged to the left side plate (11) and the right side plate (12), respectively; a slider (43) is provided at the other end of the second pedal (42), and both the left side plate (11) and the right side plate (12) are provided with a slide groove (14), and the slide groove (14) and the slider (43) are slidably fitted.

[0010] Preferably, the pedal drive assembly (50) comprises a rotating shaft (52) respectively arranged at two ends of the ladder frame assembly (10), sprockets (53) are respectively arranged at both ends of the rotating shaft (52), and chains (54) are respectively arranged on the sprockets (53), and a pedal driver (51) is arranged on one of the rotating shafts (52).

[0011] Preferably, the plurality of pedal assemblies (40) are arranged uniformly in an array along the length direction of the ladder frame assembly (10), and the second pedals (42) of the pedal assemblies (40) are respectively connected to the chains (54) of the pedal drive assembly (50).

[0012] Preferably, a retractable dust cover (60) is provided between the pedal assemblies (40), and two ends of the dust cover (60) are respectively slidably connected to the left side plate (11) and the right side plate (12) of the ladder frame assembly (10).

[0013] Preferably, the dust cover (60) comprises a retractable outer shell, and a spring is arranged between the outer shells.

[0014] Preferably, an anti-slip pad (80) is provided on the surface of the first pedal (41) and / or the second pedal (42).

[0015] Preferably, the ladder frame driver (30) is one of an electric cylinder and a hydraulic jack.

[0016] Preferably, a retractable cable (70) is provided on the pedal assembly (40).

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The pedals can be folded and hidden for storage to reduce space occupation;

[0019] 2. The ladder drive can make the ladder quickly and conveniently lift across floors;

[0020] 3. After the pedal is folded by the pedal driver, the ladder can be used as a slide, making it more convenient and labor-saving to transfer goods between floors;

[0021] 4. In case of emergency such as floods, it can also be used as a broken bridge for people, motorcycles and small cars to pass through;

[0022] 5. By setting up a guy rope, people can be prevented from falling when climbing up, and the rigidity of the ladder can be increased to avoid bending and deformation when the ladder is long and loaded with a large amount of material. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is an overall cross-sectional view of the present invention;

[0025] Figure 3 for Figure 2 A partial enlarged view of;

[0026] Figure 4 It is a schematic diagram of the hidden state;

[0027] Figure 5 It is a schematic diagram of the rise of the present invention.

[0028] Among them: ladder frame assembly 10, left side plate 11, right side plate 12, connecting rod 13, slide groove 14, fixing seat 20, ladder frame driver 30, pedal assembly 40; first pedal 41, second pedal 42, slider 43, pedal drive assembly 50, pedal driver 51, rotating shaft 52, sprocket 53, chain 54, dust cover 60, cable 70, anti-slip pad 80. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0033] like Figure 1 , 2 As shown in Figures 3, 4 and 5, a hidden ladder with foldable steps comprises a ladder frame assembly 10, a fixing seat 20 and a ladder frame driver 30; one end of the ladder frame assembly 10 is rotatably hinged to the fixing seat 20 and the ladder frame driver 30, respectively, and the other end of the ladder frame assembly 10 is a free end;

[0034] The fixed end of the ladder frame driver 30 is hinged to the fixed seat 20, and the moving end of the ladder frame driver 30 is hinged to the ladder frame assembly 10;

[0035] The ladder frame assembly 10 is provided with a plurality of foldable pedal assemblies 40 , and the pedal assemblies 40 are connected to a pedal driving assembly 50 .

[0036] When in use, the ladder frame driver 30 can drive the ladder frame assembly 10 to rotate around the fixing base 20, and the rotation angle is greater than 90 degrees. In this embodiment, the fixing base 20 is fixed on the second floor, and the driver 30 can drive the ladder frame assembly 10 to rotate, so that the free end of the ladder frame assembly 10 is switched to the positions of the first floor, the second floor, and the third floor respectively. After use, the ladder frame assembly 10 is fixed on the second floor to achieve the purpose of hiding.

[0037] Furthermore, the ladder frame assembly 10 includes a left side plate 11 and a right side plate 12 which are arranged parallel to each other, and a connecting rod 13 is arranged between the left side plate 11 and the right side plate 12; the pedal assembly 40 is arranged between the left side plate 11 and the right side plate 12.

[0038] Furthermore, the pedal assembly 40 includes a first pedal 41 and a second pedal 42, wherein adjacent ends of the first pedal 41 and the second pedal 42 are rotatably hinged to each other, and the other end of the first pedal 41 is rotatably hinged to the left side plate 11 and the right side plate 12 respectively; a slider 43 is provided at the other end of the second pedal 42, and both the left side plate 11 and the right side plate 12 are provided with a slide groove 14, and the slide groove 14 is slidably fitted with the slider 43.

[0039] Furthermore, the pedal drive assembly 50 includes a rotating shaft 52 respectively arranged at both ends of the ladder frame assembly 10, sprockets 53 are respectively arranged at both ends of the rotating shaft 52, and chains 54 are respectively arranged on the sprockets 53, and a pedal driver 51 is arranged on one of the rotating shafts 52.

[0040] Furthermore, the plurality of pedal assemblies 40 are arranged uniformly in an array along the length direction of the ladder frame assembly 10 , and the second pedals 42 of the pedal assemblies 40 are respectively connected to the chains 54 of the pedal driving assembly 50 .

[0041] In this embodiment, if Figure 2 , 4 As shown, the fixing seat 20 is fixed on the second floor. When the ladder is not in use, the pedal driving assembly 50 shrinks and folds the pedal assembly 40 between the left side plate 11 and the right side plate 12. Then, driven by the ladder frame driver 30, the ladder frame assembly 10 is closely attached to the second floor, so as to achieve the purpose of hidden storage and not occupying space.

[0042] After the step assembly 40 is folded, the ladder is in a flat plate shape and can be used as a slide, making it more convenient and labor-saving to transfer goods between floors;

[0043] In emergencies such as floods, it can also be used as a broken bridge to allow people, motorcycles and small cars to pass through.

[0044] Furthermore, a retractable dust cover 60 is provided between the pedal assemblies 40 , and two ends of the dust cover 60 are respectively slidably connected to the left side plate 11 and the right side plate 12 of the ladder frame assembly 10 .

[0045] Furthermore, the dust cover 60 includes a retractable outer shell, and a spring is arranged between the outer shells.

[0046] like Figure 2 , 3 As shown, the dust cover 60 can always maintain a seamless gap between two adjacent pedal assemblies 40 when the pedal assembly 40 is in the unfolded or folded state, thereby preventing foreign objects from entering the interior of the ladder and causing debris to fall between the ladder frames and cause damage to objects or people. It can also prevent foreign objects from entering and causing transmission components to get stuck.

[0047] Furthermore, an anti-slip pad 80 is disposed on the surface of the first pedal 41 and / or the second pedal 42 .

[0048] Furthermore, the ladder frame driver 30 is one of an electric cylinder or a hydraulic jack.

[0049] Furthermore, a retractable cable 70 is provided on the pedal assembly 40 .

[0050] In this embodiment, the cable 70 is arranged in the winder. Before use, the extension length of the cable 70 corresponding to each pedal assembly 40 is pre-adjusted; when the ladder is hidden, the cable 70 is stored in the winder; the two ends of the cable 70 are respectively connected to the pedal assembly 40 and the floor to prevent people from falling when climbing; the cable 70 can also increase the rigidity of the ladder frame assembly 10 to avoid bending and deformation when the ladder frame assembly 10 is long and loaded with a large load.

[0051] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the patent claims of the present invention.

Claims

1. A hidden ladder with foldable steps, characterized in that: The invention comprises a ladder frame assembly (10), a fixing seat (20) and a ladder frame driver (30); one end of the ladder frame assembly (10) is rotatably hinged to the fixing seat (20) and the ladder frame driver (30), and the other end of the ladder frame assembly (10) is a free end; The fixed end of the ladder frame driver (30) is hinged to the fixed seat (20), and the moving end of the ladder frame driver (30) is hinged to the ladder frame assembly (10); A plurality of foldable pedal assemblies (40) are provided on the ladder frame assembly (10), and the pedal assemblies (40) are connected to a pedal drive assembly (50); The ladder frame assembly (10) comprises a left side plate (11) and a right side plate (12) which are arranged parallel to each other, and a connecting rod (13) is arranged between the left side plate (11) and the right side plate (12); the pedal assembly (40) is arranged between the left side plate (11) and the right side plate (12); The pedal assembly (40) comprises a first pedal (41) and a second pedal (42), wherein adjacent ends of the first pedal (41) and the second pedal (42) are rotatably hinged to each other, and the other end of the first pedal (41) is rotatably hinged to a left side plate (11) and a right side plate (12) respectively; a slider (43) is provided at the other end of the second pedal (42), and both the left side plate (11) and the right side plate (12) are provided with a slide groove (14), and the slide groove (14) and the slider (43) are slidably fitted.

2. The hidden ladder with foldable steps as claimed in claim 1, characterized in that: The pedal drive assembly (50) comprises rotating shafts (52) respectively arranged at two ends of the ladder frame assembly (10), sprocket wheels (53) are respectively arranged at two ends of the rotating shaft (52), and chains (54) are respectively arranged on the sprocket wheels (53), and a pedal drive (51) is arranged on one of the rotating shafts (52).

3. The hidden ladder with foldable steps as claimed in claim 1, characterized in that: The plurality of pedal assemblies (40) are arranged uniformly in an array along the length direction of the ladder frame assembly (10), and the second pedals (42) of the pedal assemblies (40) are respectively connected to chains (54) of the pedal drive assembly (50).

4. The hidden ladder with foldable steps as claimed in claim 3, characterized in that: A retractable dust cover (60) is provided between the pedal assemblies (40), and two ends of the dust cover (60) are respectively slidably connected to a left side plate (11) and a right side plate (12) of the ladder frame assembly (10).

5. The hidden ladder with foldable steps as claimed in claim 4, characterized in that: The dust cover (60) comprises a retractable outer shell, and a spring is arranged between the outer shells.

6. The hidden ladder with foldable steps as claimed in claim 1, characterized in that: An anti-slip pad (80) is provided on the surface of the first pedal (41) and / or the second pedal (42).

7. The hidden ladder with foldable steps as claimed in claim 1, characterized in that: The ladder frame driver (30) is one of an electric cylinder and a hydraulic jack.

8. The hidden ladder with foldable steps according to any one of claims 1, 3 or 4, characterized in that: The pedal assembly (40) is provided with a retractable cable (70).

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