Splicing type pedal of ladder and folding ladder

Abstract

The utility model provides a spliced footboard of a ladder, which comprises at least two footboard units, one end of the top surface of each footboard unit in the width direction extends along the thickness direction to form a first connecting part, and the other end of the top surface of each footboard unit extends along the thickness direction to form a second connecting part; the first connecting parts and the second connecting parts of every two adjacent pedal units are connected with each other, so that the pedal units are spliced in the width direction to form the spliced pedal of the ladder.

Description

Technical Field

[0001] This utility model relates to ladders, and more particularly to a ladder with a modular step and a folding ladder. Background Technology

[0002] Traditional folding ladders typically use a fixed design for their treads, with the tread width and installation position limited during the manufacturing stage, resulting in a significant limitation in the ladder's functionality. In existing technologies, users often need to purchase multiple sizes of ladders to accommodate different working heights or spans, increasing costs and wasting storage space.

[0003] The width of the steps on a standard folding ladder cannot be adjusted to suit the user's limb length or the characteristics of the work environment. When setting up the ladder in a confined space, the fixed width of the steps often interferes with surrounding obstacles, preventing the ladder from unfolding effectively. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a ladder with a splicing tread, including at least two tread units. The top surface of the tread unit extends from one end in the width direction along the thickness direction to form a first connecting part, and from the other end in the thickness direction to form a second connecting part.

[0005] The first connecting part and the second connecting part of two adjacent pedal units are connected to each other so that the pedal units are spliced ​​together along the width direction to form the spliced ​​pedals of the ladder.

[0006] In some embodiments, the first connecting portion is provided with at least two first riveting portions that protrude along its thickness direction along its length direction, and the second connecting portion is provided with at least two second riveting portions that are recessed along its thickness direction along its length direction, and the first riveting portions and the second riveting portions are press-fitted together.

[0007] In some embodiments, the first connecting portion is provided with at least two riveting holes along its length, and the second connecting portion is provided with at least two riveting holes along its length, and the riveting holes of the first connecting portion and the riveting holes of the second connecting portion are riveted together by rivets.

[0008] In some embodiments, the first connecting part is provided with at least two screw holes along the length direction, and the second connecting part is provided with at least two screw holes along the length direction; the bolt passes through the screw holes of the first connecting part and the screw holes of the second connecting part and is connected to the nut.

[0009] In some embodiments, the top of the second connecting portion bends toward the first connecting portion of the adjacent pedal unit to form a U-shaped hook, and the first connecting portion extends upward to form a limiting portion that engages with the U-shaped hook for limiting.

[0010] In some embodiments, the bottom of the second connecting portion is bent toward the first connecting portion of the adjacent pedal unit to form a U-shaped base, which limits the bottom of the first connecting portion.

[0011] In some embodiments, a U-shaped package is also included, the U-shaped package including an upper side and a lower side disposed opposite each other, and a side package portion connecting the upper side and the lower side.

[0012] In some embodiments, the upper part has rivet holes at both ends, and the top surface of the pedal unit has rivet holes corresponding to the positions of the rivet holes on the upper part. The rivet holes on the upper part and the rivet holes on the top surface of the pedal unit are riveted together by rivets.

[0013] In some embodiments, the bottom of the second connecting portion extends outward to form an extension portion, and rivet holes are provided at both ends of the extension portion along the length direction. The lower part is provided with riveting holes that correspond one-to-one with the rivet holes of the extension portion. The riveting holes of the lower part and the riveting holes of the extension portion are riveted together by rivets.

[0014] This utility model also provides a folding ladder, including a front ladder frame and a rear ladder frame, wherein two rods of the front ladder frame are hinged to two rods of the rear ladder frame, characterized in that it includes the above-mentioned spliced ​​treads, wherein the spliced ​​treads include a top tread and a plurality of sub-treads arranged sequentially along the height direction.

[0015] In some embodiments, the number of pedal units of the top pedal is greater than the number of sub-pedals; the front end of the side enclosure is provided with a first hinge, and the front ends of the top pedal and the sub-pedals are hinged to the rod of the front ladder frame through the first hinge.

[0016] In some embodiments, a second hinge is provided at the middle position of the top pedal and a second hinge is provided at the rear end of the sub-pedal; a side link is also included, and the top pedal and the sub-pedal are hinged to the side link via the second hinge.

[0017] In some embodiments, a support rod is also included, one end of which is hinged to the middle of the side connecting rod, and the other end of which is hinged to the middle of the rear ladder frame.

[0018] Compared to existing technologies, the pedal of this invention includes multiple pedal units, each pedal unit extending downwards to form a first connecting portion and a second connecting portion. The first connecting portions and second connecting portions of two adjacent pedal units are connected to each other to form the interlocking pedal, allowing for the adjustment of the pedal width to suit specific user scenarios and user body characteristics. Furthermore, the pedal of this invention is easy to transport and store. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the folding ladder of this utility model;

[0020] Figure 2 This is a schematic diagram of the top pedal of this utility model;

[0021] Figure 3 This is an exploded view of the top pedal of this utility model;

[0022] Figure 4 This is a cross-sectional view of the top pedal AA in Example 1;

[0023] Figure 5 for Figure 4 Enlarged view of point a;

[0024] Figure 6 This is a cross-sectional view of the top pedal AA in Example 2;

[0025] Figure 7 for Figure 6 Enlarged view of point a;

[0026] Figure 8 This is a cross-sectional view of the top pedal AA in Example 3;

[0027] Figure 9 for Figure 8 Enlarged view of point a. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] Example 1

[0032] Reference Figure 1-9 This embodiment provides a folding ladder, including a front ladder frame 1 and a rear ladder frame 2. Two rods of the front ladder frame 1 are hinged to two rods of the rear ladder frame 2. A top step 3 and two sub-steps 5 are respectively arranged from top to bottom along the height direction. The width of the top step 3 is greater than the width of the sub-steps 5. The front ends of the top step 3 and the sub-steps 5 are hinged to the two rods of the front ladder frame 1, respectively. The middle part of the top step 3 and the rear end of the sub-steps 5 are hinged to a side connecting rod 4. The ladder also includes a support rod 6. One end of the support rod 6 is hinged to the middle of the side connecting rod 4, and the other end of the support rod 6 is hinged to the middle of a rod of the rear ladder frame 2. Through the above-described hinged connection method, the folding ladder of this embodiment can achieve rotation at the connection point, thereby realizing folding.

[0033] Furthermore, such as Figure 2-5 As shown, taking the top pedal 3 as an example, the top pedal 3 includes three pedal units 32. The top surface of the pedal unit 32 extends downward along the thickness direction at one end in the width direction to form a first connecting part 321, and extends downward along the thickness direction at the other end to form a second connecting part 322. The first connecting part 321 and the second connecting part 322 are perpendicular to the top surface.

[0034] The first connecting portion 321 has two protruding first riveting portions 3211 along its length direction and symmetrically arranged along its thickness direction. The second connecting portion 322 has two concave first riveting portions 3222 along its length direction and symmetrically arranged along its thickness direction. The first riveting portions 3222 and 3222 are one-to-one corresponding. The first riveting portions 3211 and 3222 are press-fitted together, so that the protruding first riveting portions 3211 are pressed into the concave first riveting portions 3222, thereby achieving the connection and fixation of the first connecting portion 321 and the second connecting portion 322. In this embodiment, since the first riveting portions 3211 need to be pressed into the first riveting portions 3222, the panel material of the pedal unit 32 itself can be deformed, for example, using ordinary low carbon steel, aluminum alloy, copper alloy, etc. The first connecting portions 321 and second connecting portions 322 of two adjacent pedal units 32 are press-fitted together to form the top pedal 3.

[0035] When a user steps on the top surface of the pedal unit 32, the pedal unit 32 will be subjected to a large downward force. Therefore, in order to further increase the overall strength of the pedal, in this embodiment, the top of the second connecting part 322 bends towards the first connecting part 321 of the adjacent pedal unit 32, thereby forming a U-shaped hook 3221. The first connecting part 321 extends upward to form a limiting part 3212. When installed, the limiting part 3212 extends into the U-shaped hook 3221 and engages with the U-shaped hook 3221 for limiting. The bottom of the second connecting part 322 bends towards the first connecting part 321 of the adjacent pedal unit 32 to form a U-shaped base support 3223, which limits the bottom of the first connecting part 321.

[0036] like Figure 5 As shown, when pedal unit B 32 is subjected to force, pedal unit B 32 can be hung on the limiting part 3212 of pedal unit A 32 via the U-shaped hook 3221 to achieve leverage. When pedal unit A 32 is subjected to force, the U-shaped base support 3223 can support pedal unit A 32. Sub-pedal 5 is formed by splicing in the same way as described above, and the number of pedal units in sub-pedal 5 is 2 pieces.

[0037] In order to enable the connection between the top pedal 3, the sub-pedal 5, the front ladder frame 1, and the side connecting rod 4, this embodiment also includes a U-shaped encapsulation component 31 for encapsulating the side of the spliced ​​top pedal 3, taking the top pedal 3 as an example. The U-shaped encapsulation component 31 includes an upper side and a lower side that are arranged opposite to each other, and a side encapsulation part that connects the upper side and the lower side.

[0038] Specifically, the upper part has rivet holes at both ends, and the pedal unit 32 corresponding to the rivet holes on the upper part also has rivet holes on its top surface. The rivet holes on the upper part and the rivet holes on the top surface of the pedal unit 32 are riveted together by rivets. The bottom of the second connecting part 322 extends outward to form an extension part 3224. The extension part 3224 has rivet holes at both ends along its length direction, and the lower part has rivet holes that correspond one-to-one with the rivet holes of the extension part 3224. The rivet holes on the lower part and the rivet holes of the extension part 3224 are riveted together by rivets. In this way, the two U-shaped encapsulation parts 31 are respectively installed on the two sides of the pedal.

[0039] The front end of the side encapsulation part is provided with a first hinge member 312, the middle position of the top pedal 3 is provided with a second hinge member, and the rear end of the sub-pedal 5 is provided with a second hinge member 311. The front ends of the top pedal 3 and the sub-pedal 5 are hinged to the rod of the front ladder frame 1 through the first hinge member 312, and the top pedal 3 and the sub-pedal 5 are hinged to the side connecting rod 4 through the second hinge member 311, thereby connecting the top pedal 3 and the sub-pedal 5 to the rod of the front ladder frame 1 and the side connecting rod 4.

[0040] It should be noted that the number of sub-pedal 5, the number of pedal units possessed by the top pedal 3 and sub-pedal 5, the number of first riveting parts 3211 and first riveting parts 3222, and other features involving quantity are not limited to this embodiment.

[0041] Example 2

[0042] like Figure 6-7 As shown, the difference between this embodiment and embodiment 1 is that the riveting methods of the first connecting part 321 and the second connecting part 322 are different in this embodiment.

[0043] In this embodiment, the first connecting part 321 is provided with at least two symmetrical riveting holes along the length direction, and the second connecting part 322 is provided with at least two symmetrical riveting holes along the length direction. The riveting holes of the first connecting part 321 and the riveting holes of the second connecting part 322 are riveted together by rivets 7.

[0044] Example 3

[0045] like Figure 8-9 As shown, the difference between this embodiment and embodiment 1 is that the connecting part and the second connecting part 322 are connected by a bolt and nut. Specifically, the first connecting part 321 has at least two symmetrical screw holes along its length, and the second connecting part 322 has at least two symmetrical screw holes along its length; the bolt 9 passes through the screw holes of the first connecting part 321 and the screw holes of the second connecting part 322, and then the nut 8 is tightened to achieve the connection.

[0046] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A spliced step for a ladder, characterized by The first connecting part of the adjacent two tread plate units is connected with the second connecting part to make the tread plate units jointed along the width direction to form the jointed tread plate of the ladder. The first connecting part is provided with at least two first riveting parts protruding along the thickness direction along the length direction, and the second connecting part is provided with at least two second riveting parts concave along the thickness direction along the length direction, and the first riveting part and the second riveting part are rivet-connected.

2. The spliced step ladder of claim 1, wherein, The first connecting part is provided with at least two riveting holes along the length direction, and the second connecting part is provided with at least two riveting holes along the length direction, and the riveting holes of the first connecting part and the riveting holes of the second connecting part are riveted by rivets.

3. The spliced step ladder of claim 1, wherein, The first connecting part is provided with at least two screw holes along the length direction, and the second connecting part is provided with at least two screw holes along the length direction; the screw passes through the screw hole of the first connecting part and the screw hole of the second connecting part and is connected with the nut.

4. The spliced step ladder of claim 1, wherein, The top of the second connecting part is bent to form a U-shaped hook towards the first connecting part of the adjacent tread plate unit, and the first connecting part extends upward to form a limiting part which is limited with the U-shaped hook.

5. The spliced step of the ladder according to any one of claims 1 to 4, wherein The bottom of the second connecting part is bent to form a U-shaped bottom support towards the first connecting part of the adjacent tread plate unit, and the U-shaped bottom support limits the bottom of the first connecting part.

6. The spliced step of the ladder according to any one of claims 1 to 4, wherein Further comprising a U-shaped packaging piece, the U-shaped packaging piece comprises an upper edge and a lower edge arranged oppositely, and a side packaging part connecting the upper edge and the lower edge.

7. The spliced step of any one of claims 1-4, wherein, Both ends of the upper edge are provided with riveting holes, the top surface of the tread plate unit is provided with riveting holes corresponding to the riveting holes of the upper edge, and the riveting holes of the upper edge and the riveting holes of the top surface of the tread plate unit are riveted by rivets.

8. The spliced step ladder of claim 7, wherein, The bottom of the second connecting part extends outward to form an extension part, both ends of the extension part along the length direction are provided with rivet holes, the lower edge is provided with riveting holes corresponding to the rivet holes of the extension part, and the riveting holes of the lower edge and the riveting holes of the extension part are riveted by rivets.

9. The spliced step ladder of claim 7, wherein, The ladder comprises a plurality of jointed tread plates according to any one of claims 7-9, and the ladder comprises a top tread plate and a plurality of sub-tread plates arranged in sequence along the height direction.

10. A folding ladder comprising a front ladder frame and a rear ladder frame, two bars of the front ladder frame being hingedly connected to two bars of the rear ladder frame, characterized in that, The number of the tread plate units of the top tread plate is greater than that of the sub-tread plate; the front end of the side packaging part is provided with a first hinge, and the front end of the top tread plate and the sub-tread plate are hingedly connected with the rod body of the front ladder frame through the first hinge.

11. The foldable ladder of claim 10, wherein, The middle part of the top tread plate is provided with a second hinge, and the rear end of the sub-tread plate is provided with a second hinge; further comprising a side connecting rod, and the top tread plate and the sub-tread plate are hingedly connected with the side connecting rod through the second hinge.

12. The foldable ladder of claim 11, wherein, Further comprising a support rod, one end of the support rod is hingedly connected with the middle part of the side connecting rod, and the other end of the support rod is hingedly connected with the middle part of the rod body of the rear ladder frame.

13. The foldable ladder of claim 12, wherein, ​

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