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Portable folding ladder

A folding ladder, portable technology, applied in the direction of ladders, buildings, building structures, etc., can solve the problems of cumbersome folding and stretching, high processing cost, small expansion ratio, etc., and achieve convenient stretching and folding operations, low processing cost, and stability enhanced effect

Inactive Publication Date: 2010-02-24
陆海章
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent and its similar structures generally have the disadvantages of complex structure, high processing cost, cumbersome folding and stretching, small expansion and contraction ratio, and poor stability.

Method used

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  • Portable folding ladder
  • Portable folding ladder
  • Portable folding ladder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Reference figure 1 , figure 2 and image 3 As shown, the portable folding ladder in this embodiment includes a vertical rod 100 and a plurality of laterally arranged pedal units 1. The plurality of pedal units 1 are arranged at intervals along the height direction of the vertical rod 100. There is a fixed rod 11, the front end has a pedal part 12 for pedaling, the rear end is hollow, a herringbone connecting rod 13 is arranged in the hollow position, and the two legs of the connecting rod 13 are rotatably arranged on two rear ends of the pedal unit 1. On the corners, the vertex is connected to the middle of the pedal portion 12 for supporting. There is also a herringbone reinforcing rod 6 between the two adjacent pedal units 1 up and down. The two legs of the reinforcing rod 6 are located on the two corners of the rear end of the lower pedal unit 1, and the vertex is supported on the front end of the upper pedal unit 1. middle. Two sides of each pedal un...

Embodiment 2

[0039] Example 2: Reference Figure 4 As shown, in the portable folding ladder in this embodiment, the torsion spring 53 is used to replace the return spring 52 in the first embodiment. The torsion spring 53 is arranged between the inner side of the hook member 7 and the first vertical rod 3. Other structures and embodiments 1 is the same.

Embodiment 3

[0040] Example 3: Reference Figure 5 , Image 6 , Figure 7 and Figure 8 As shown, the first vertical rod 3 of the portable folding ladder in this embodiment is provided with a marble slot 42 near the head.

[0041]The sleeve 54 is slidably sleeved on the outer wall of the head of the first vertical rod 3 and the head of the second vertical rod 4, and the inner wall has a cavity 541 corresponding to the marble groove 42; It is rotatably connected with the head of the first vertical rod 3 and the head of the second vertical rod 4;

[0042] The marble 56 is arranged between the sleeve cavity 541 and the marble groove 42 and the sleeve 541 is limited to the outer wall of the first vertical rod head 3 and the second vertical rod 4 head; one end of the compression spring 55 is connected to the sleeve concave The bottom of the cavity 541 is in contact with the ball 56, and the other end is in contact with the marble 56. When the sleeve 54 is in a sliding state, the marble 56 o...

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PUM

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Abstract

The invention discloses a portable folding ladder, which comprises vertical rods and a plurality of pedal units arranged transversely, wherein the plurality of pedal units are arranged at intervals along the height direction of the vertical rods. The portable folding ladder is characterized in that: four folding vertical rods are arranged between each pair of adjacent upper and lower pedal units independently; two ends of each of the four vertical rods are rotatably arranged at four corners of each pedal unit; and the vertical rods comprise a first vertical rod, a second vertical rod and a folding locking mechanism arranged between the first vertical rod and the second vertical rod. Compared with the prior art, the portable folding ladder has the advantages of great simplification of inside arrangement and convenient unfolding and folding operations by adopting a structural mode of folding middle parts of the vertical rods.

Description

technical field [0001] The present invention relates to a portable folding ladder. Background technique [0002] Common ladders, whether it is a herringbone ladder or a one-way ladder, generally include a vertical rod and a plurality of laterally arranged pedal units. Multiple pedal units are arranged at intervals along the height direction of the vertical rod. The vertical rod is used to support the pedal unit. Set on both sides of the pedal unit. In order to facilitate storage, transportation and handling, it is often designed as a foldable structure. For example, the Chinese utility model patent "Foldable Herringbone Ladder" with the patent number ZL03239182.X (authorized announcement number: CN2612790Y), and the Chinese invention patent application "Foldable one-word ladder" with the application number 86101587, as well as the patent The Chinese utility model patent No. ZL200520123122.6 "Hinged Structure of Folding Ladder with Wrench" (authorized announcement number: C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E06C1/383
Inventor 陆海章
Owner 陆海章