Ladder posts and ladders

Abstract

The utility model discloses a ladder post and ladder, including vertical tube, guide sleeve and buffer, the guide sleeve includes connecting sleeve, neck and base, the connecting sleeve detachably connect in the lower extreme of vertical tube, the one end of connecting sleeve is connected with neck, the neck is connected with base, the connecting sleeve the neck with the base is integrative forming structure, the annular groove is formed between connecting sleeve the neck with base, the buffer is arranged in the annular groove, and the one end of buffer is out of the annular groove. Ladder post. The utility model has the advantages of simple structure, convenient assembly.

Description

Technical Field

[0001] This utility model relates to a telescopic ladder, and more particularly to a ladder column and ladder with a simple structure and easy assembly. Background Technology

[0002] Telescopic ladders can be extended for users to climb using their momentum, and can be folded up when not in use for easy carrying and storage, making them an essential tool for high-altitude construction work. In existing technology, to ensure safety during folding and prevent hand pinching, the ladder is typically designed to generate resistance during retraction, resulting in a slow fold. Therefore, a buffer foot needs to be connected to the lower end of the ladder column. However, existing buffer feet consist of an upper end cap, an end cap connector, a lower end cap, a buffer pad, and self-tapping screws connecting the first four. The buffer foot as a whole also needs to be fixed to the end of the aluminum tube ladder column using rubber dowels. Therefore, existing buffer feet require five separate component assemblies, and the ladder column itself requires three components. Consequently, a single ladder column has a large number of parts, a very complex connection structure, and is inconvenient to assemble. Utility Model Content

[0003] The purpose of this invention is to provide a ladder column that is simple in structure and easy to assemble.

[0004] Another objective of this invention is to provide a ladder that is simple in structure and easy to assemble.

[0005] To achieve the above objectives, the ladder column provided by this utility model includes a riser, a guide sleeve, and a buffer. The guide sleeve includes a connecting sleeve, a neck, and a base. The connecting sleeve is detachably connected to the lower end of the riser. One end of the connecting sleeve is connected to the neck, and the neck is connected to the base. The connecting sleeve, the neck, and the base are integrally formed. An annular groove is formed between the connecting sleeve, the neck, and the base. The buffer is disposed in the annular groove, and one end of the buffer extends out of the annular groove. Compared with the prior art, the guide sleeve of this utility model has an integral structure of connecting sleeve, neck and bottom, and an annular groove is formed between the connecting sleeve, neck and base, so that the buffer can be set in the annular groove. One end of the connecting sleeve can be detachably connected to the riser. Therefore, the ladder column only needs to be composed of the riser, guide sleeve and buffer. The number of parts is very small, which greatly simplifies the structure of the ladder column. The connection is very simple and the assembly is very convenient.

[0006] Preferably, the guide sleeve has a through hole on its outer side, and an elastic buckle extends from the edge of the through hole toward the center of the through hole. The outer wall of the riser has an engaging hole, and the elastic buckle engages with the engaging hole. By providing the elastic buckle and its engagement with the engaging hole, the guide sleeve and the riser can be detachably connected, thereby achieving quick connection or disassembly and improving assembly convenience.

[0007] Specifically, the upper outer side of the elastic buckle is provided with a guide slope. The guide slope can force the elastic buckle to deform elastically and avoid the riser when it enters the riser, thus allowing the guide sleeve to be smoothly fitted into the riser. After the guide sleeve is in place, it can use its own elastic restoring force to pop out towards the locking hole, thereby engaging with the locking hole and achieving a locking connection. This has the advantages of simple structure, convenient assembly, and stable connection.

[0008] Specifically, the lower outer end of the elastic buckle is provided with an engaging portion, which engages with the edge of the engaging hole. This makes the elastic buckle engage more stably and securely with the engaging hole.

[0009] Specifically, the engaging portion is a recessed step.

[0010] Preferably, the buffer member has a sleeve and a buffer plate, the sleeve being fitted onto the neck, and the buffer plate being connected to the outer side of the sleeve near the base.

[0011] Specifically, the buffer sheet and the sleeve are integrally formed.

[0012] Specifically, the end of the sleeve near the bottom of the connecting sleeve is higher than the surface of the buffer plate, and a gap is formed between the buffer plate and the bottom of the connecting sleeve. This provides space for the front end of the buffer plate to bend and avoid the contraction of adjacent risers, thereby ensuring that the buffer plate can both make frictional contact with the inner wall of the riser to achieve buffering and prevent the buffer plate from getting stuck with the riser, ensuring the reliability of the expansion and contraction between adjacent risers.

[0013] Preferably, a limiting ring is provided on the outer side of the end of the connecting sleeve away from the riser, and the riser abuts against the limiting ring. By providing the limiting ring, the connecting sleeve and the riser can be accurately fitted and positioned, preventing the connecting sleeve from being over-fitted into the riser.

[0014] A ladder includes at least two ladder sections that are slidably fitted together, each ladder section including two ladder posts and a step connecting the two ladder posts, wherein the upper ladder post is fitted into the lower ladder post on the same side; a buffer of the upper ladder post is in sliding contact with the inner wall of the riser of the lower ladder post. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the ladder of this utility model.

[0016] Figure 2 This is a cross-sectional view of two adjacent ladder columns of the ladder of this utility model.

[0017] Figure 3 yes Figure 2 Enlarged view of section A.

[0018] Figure 4 This is a structural diagram of the ladder column of this utility model.

[0019] Figure 5 This is an exploded view of the ladder column of this utility model.

[0020] Figure 6 This is a structural diagram of the guide sleeve for the ladder column of this utility model. Detailed Implementation

[0021] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please see Figures 1 to 6 The ladder 100 of this utility model includes at least two ladder sections 110 that are slidably fitted together. Each ladder section 110 includes two ladder posts 1 and a step 2 connecting the two ladder posts 1. The upper ladder post 1 is slidably fitted into the lower ladder post 1 on the same side. Specifically, each ladder post 1 includes a riser 11, a guide sleeve 12, and a buffer 13. The cross-section of the riser 11, guide sleeve 12, and buffer 13 is oblong, elliptical, or circular. The buffer 13 of the upper ladder post 1 is in slidable contact with the inner wall of the riser 11 of the lower ladder post 1. The guide sleeve 12 includes a connecting sleeve 121, a neck 122, and a base 123. The connecting sleeve 121 is detachably connected to the lower end of the riser 11. One end of the connecting sleeve 121 is fixedly connected to one end of the neck 122, and the other end of the neck 122 is connected to the base 123. The connecting sleeve 121, the neck 122, and the base 123 are integrally formed. An annular groove 124 is formed between the connecting sleeve 121, the neck 122, and the base 123, and the annular groove 124 circumferentially surrounds the outer wall of the guide sleeve 12. The buffer member 13 is annular with an opening in the center, and is disposed within the annular groove 124 and fitted over the neck 122. The outer peripheral edge of the buffer member 13 extends beyond the annular groove 124 to contact the inner wall of the riser 11 of the next ladder column 1. Please see again Figures 4 to 6The guide sleeve 12 has symmetrical through holes 121a on opposite sides of its outer side. In this embodiment, the through holes 121a are located on the outer side of the connecting sleeve 121. An elastic buckle 121b extends from the upper edge of the through hole 121a towards its center. Engaging holes 11a are symmetrically provided on both sides of the outer wall of the riser 11, and the elastic buckle 121b engages with the engaging holes 11a. By providing the elastic buckle 121b and engaging with the engaging holes 11a, the guide sleeve 12 and the riser 11 can be detachably connected, achieving quick connection or disassembly and improving assembly convenience. Specifically, the upper outer side of the elastic buckle 121b has a guide slope 121c. The guide slope 121c gradually slopes outward from the end away from the base 123 towards the end near the base 123 and protrudes from the outer wall of the guide sleeve 12. The guide slope 121c can force the elastic buckle 121b to elastically deform and avoid the riser 11 when the elastic buckle 121b enters the riser 11. Therefore, the guide sleeve 12 can be smoothly fitted into the riser 11. After the guide sleeve 12 is in place, it can use its own elastic restoring force to pop out towards the engaging hole 11a, thereby engaging with the engaging hole 11a and achieving a snap-fit ​​connection. This design has the advantages of simple structure, convenient assembly, and stable connection. The lower outer end of the elastic buckle 121b is provided with an engaging portion 121d, which is a recessed step. The engaging portion 121d engages with the edge of the engaging hole 11a. The step has a top surface 121e and a limiting surface 121f located on one side of the top surface 121e. The top surface 121e abuts against the edge of the engaging hole 11a, and the limiting surface 121f abuts against the inner wall of the edge of the engaging hole 11a. This makes the elastic buckle 121b engage more stably and securely with the engaging hole 11a.

[0023] Please see again Figure 4 and Figure 5The buffer component 13 includes a sleeve 131 and a buffer plate 132. The sleeve 131 is fitted onto the neck 122, and the buffer plate 132 is connected to the outer side of the sleeve 131 near the base 123. The buffer plate 132 and the sleeve 131 are integrally formed. The buffer component 13 is made of an elastic rubber material, such as rubber or silicone. The end of the sleeve 131 near the bottom of the connecting sleeve 121 is higher than the surface of the buffer plate 132, and a gap 132a is formed between the buffer plate 132 and the bottom of the connecting sleeve 121. This provides space for the front end of the buffer plate 132 to bend and avoid the contraction of adjacent risers 11, thereby ensuring that the buffer plate 132 can both rub against the inner wall of the riser 11 for cushioning and prevent the buffer plate 132 from getting stuck with the riser 11, ensuring the reliability of the expansion and contraction between adjacent risers 11.

[0024] Please see again Figure 4 and Figure 5 A limiting ring 121g is provided on the outer side of the end of the connecting sleeve 121 away from the riser 11, and the riser 11 abuts against the limiting ring 121g. By providing the limiting ring 121g, the connecting sleeve 121 and the riser 11 can be accurately fitted and positioned, preventing the connecting sleeve 121 from being over-fitted into the riser 11.

[0025] Compared with the prior art, the guide sleeve 12 of this utility model has an integral structure that integrates the connecting sleeve 121, the neck 122, and the bottom, and forms an annular groove 124 between the connecting sleeve 121, the neck 122, and the base 123, so that the buffer 13 can be placed in the annular groove 124. One end of the connecting sleeve 121 can be detachably connected to the riser 11. Therefore, the ladder column 1 only needs to be composed of the riser 11, the guide sleeve 12, and the buffer 13. The number of parts is very small, which greatly simplifies the structure of the ladder column 1. The connection is also very simple, making assembly very convenient.

[0026] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A ladder column, characterized in that: The device includes a riser, a guide sleeve, and a buffer. The guide sleeve includes a connecting sleeve, a neck, and a base. The connecting sleeve is detachably connected to the lower end of the riser. One end of the connecting sleeve is connected to the neck, and the neck is connected to the base. The connecting sleeve, the neck, and the base are integrally formed. An annular groove is formed between the connecting sleeve, the neck, and the base. The buffer is disposed in the annular groove, and one end of the buffer extends out of the annular groove.

2. The ladder column according to claim 1, characterized in that: The guide sleeve has a through hole on its outer side, and an elastic buckle extends from the edge of the through hole toward the center of the through hole. The outer side wall of the riser has a locking hole, and the elastic buckle locks into the locking hole.

3. The ladder column according to claim 2, characterized in that: The upper outer side of the elastic buckle is provided with a guide slope.

4. The ladder column according to claim 2, characterized in that: The lower outer side of the elastic buckle is provided with a locking part, which engages with the edge of the locking hole.

5. The ladder column according to claim 4, characterized in that: The engaging part is a recessed step.

6. The ladder column according to claim 1, characterized in that: The buffer component has a sleeve and a buffer plate. The sleeve is fitted onto the neck, and the buffer plate is connected to the outer side of the sleeve near the base.

7. The ladder column according to claim 6, characterized in that: The buffer sheet and the sleeve are integrally formed.

8. The ladder column according to claim 6, characterized in that: The end of the sleeve near the bottom of the connecting sleeve is higher than the surface of the buffer plate, and a gap is formed between the buffer plate and the bottom of the connecting sleeve.

9. The ladder column according to claim 1, characterized in that: A limiting ring is provided on the outer side of the end of the connecting sleeve away from the riser, and the riser abuts against the limiting ring.

10. A ladder, characterized in that: It includes at least two ladder sections that are slidably fitted together, each ladder section including two ladder posts as described in any one of claims 1 to 9 and a tread connecting the two ladder posts, wherein the upper ladder post is fitted into the lower ladder post on the same side; the buffer of the upper ladder post is in sliding contact with the inner wall of the riser of the lower ladder post.

Images