CN219548778U

CN219548778U - Multilayer ladder

Info

Publication number: CN219548778U
Application number: CN202320297904.XU
Authority: CN
Inventors: 朱永胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-08-18
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a multi-layer ladder, which at least comprises: the bottom of the ladder frame body can be propped against the external supporting surface; the ladder main body is arranged on the ladder frame body; the ladder frame body comprises a pair of foldable herringbone brackets; the ladder main body comprises a pair of linkage main rods which are slidably arranged on a pair of herringbone brackets and a plurality of pedals which are sequentially arranged along the height direction of the herringbone brackets, one end of each pedal is hinged with the pair of herringbone brackets, the other end of each pedal is hinged with the linkage main rod, and the linkage main rod is in sliding fit with the herringbone brackets. The utility model provides a multilayer ladder with a brand new structure, which is a ladder with a pedal structure, and has large contact area with a human body and good stability when in use; the folding bracket is provided with a linkage structure, can be folded, and has a width which is the width of the herringbone bracket after folding, so that the occupied space is small; more importantly, the linkage structure and the pedal are arranged on the inner side of the herringbone bracket, so that the attractive appearance is strong.

Description

Multilayer ladder

Technical Field

The utility model relates to the technical field of ladders, in particular to a multilayer ladder.

Background

The ladder is used as an auxiliary climbing tool and is mainly used for people to climb. Three-step ladders are very common in everyday life. The structure is generally as follows: the herringbone ladder frame is provided with a plurality of pedals.

As shown in the chinese patent of application number 201810837773.3, it discloses a multi-functional high strength folding household ladder, including two front pipes that set up in parallel and two back pipes that set up in parallel, the front pipe is articulated with the back pipe each other two by two, two be connected with flexible handrail on the top of front pipe, flexible handrail includes two grafting in the telescopic link in the front pipe, the top of two telescopic links passes through coupling assembling and connects the horizontal pole, and the handrail of the utility model is the extending structure, can withdraw the handrail when packing or transporting, reduces the volume when packing carton is transported, and has solved the weak rivet connection, exposes and return bend sunken and warp scheduling problem in the return bend position coupling assembling connection of ladder.

The linkage structure of the ladder is complex, the number of linkage rods is large, the cost is high, more importantly, a plurality of structures such as the first connecting rod and the connecting piece of the ladder are arranged on the outer side of the frame, the sliding groove is also arranged on the outer side of the frame, and the overall attractiveness is poor. Thus, there is room for improvement in existing ladders.

Disclosure of Invention

It is an object of the present utility model to provide a multi-layered ladder that solves at least one of the above problems.

According to one aspect of the present utility model, there is provided a multi-layered ladder comprising at least:

the bottom of the ladder frame body can be propped against the external supporting surface;

the ladder main body is arranged on the ladder frame body;

the ladder frame body comprises a pair of foldable herringbone brackets;

the ladder main body comprises a pair of linkage main rods which are slidably arranged on a pair of herringbone brackets and a plurality of pedals which are sequentially arranged along the height direction of the herringbone brackets, one end of each pedal is hinged with the pair of herringbone brackets, the other end of each pedal is hinged with the linkage main rod, and the linkage main rod is in sliding fit with the herringbone brackets.

Therefore, the utility model provides a multilayer ladder with a brand new structure, which is a ladder with a pedal structure, and has large contact area with a human body and good stability when in use; the folding bracket is provided with a linkage structure, can be folded, and has a width which is the width of the herringbone bracket after folding, so that the occupied space is small; more importantly, the linkage structure and the pedal are arranged on the inner side of the herringbone bracket, so that the attractive appearance is strong.

In some embodiments, the multi-layered ladder further comprises a first hinge shaft and a sliding part, wherein a sliding groove is formed in the inner side of one of the frame bodies of the herringbone support, the pedal is hinged with the other frame body of the herringbone support, which is not provided with the sliding groove, and the sliding part is hinged with the linkage main rod through the first hinge shaft and is in sliding fit with the sliding groove. Therefore, the linkage main rod can slide conveniently, folding is completed, the sliding groove is arranged on the inner side surface of the herringbone bracket, and the attractive appearance is strong.

In some embodiments, the multi-layered ladder further comprises a spacing mechanism in spacing engagement with the linkage boom for spacing the linkage boom in the fully deployed state of the ladder. Thereby facilitating improved stability of the ladder in the fully extended state.

In some embodiments, the limiting mechanism comprises a limiting piece mounted on the herringbone bracket or mounted on the linkage main rod and a limiting post mounted on the linkage main rod or mounted on the herringbone bracket, wherein the limiting piece is in limiting fit with the limiting post.

In some embodiments, one end of the limiting member is provided with a hook that mates with the limiting post.

In some embodiments, the multi-layered ladder further comprises a second hinge shaft through which the limiter is hinged to the linkage boom, the first hinge shaft and the second hinge shaft being the same hinge shaft.

In some embodiments, the multi-layered ladder further comprises a second hinge shaft, the stopper is hinged to the herringbone bracket through the second hinge shaft, the first hinge shaft is mounted to the linkage main rod, and the stopper post and the first hinge shaft are the same component.

In some embodiments, the ladder frame body further comprises a first connecting rod connected with the pair of herringbone brackets, at least one first connecting rod and two end parts of the first connecting rod extend into the sliding grooves. Thereby facilitating an increase in overall stability of the ladder.

In some embodiments, the limiting mechanism further comprises a second connecting rod, and the two limiting members mounted on the pair of herringbone brackets are independently arranged or connected into an integral structure through the second connecting rod.

In some embodiments, the ladder body further includes a first connecting shaft penetrating the pedal and having both ends respectively hinged to two frames on the same side of the pair of herringbone brackets, and a second connecting shaft penetrating the pedal and having both ends respectively hinged to the pair of linkage bars. Therefore, the pedal is convenient to rotate and link, and is convenient to fold and unfold.

The utility model has the beneficial effects that:

the utility model provides a multilayer ladder with a brand new structure, which is a ladder with a pedal structure, and has large contact area with a human body and good stability when in use; the folding bracket is provided with a linkage structure, can be folded, and has a width which is the width of the herringbone bracket after folding, so that the occupied space is small; more importantly, the linkage structure and the pedal are arranged on the inner side of the herringbone bracket, so that the attractive appearance is strong.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a multi-layered ladder according to embodiment 1 of the present utility model;

FIG. 2 is a schematic elevational view of the multi-layered ladder of FIG. 1;

FIG. 3 is one of the isometric views of the multi-layered ladder of FIG. 1 with portions of the ladder omitted;

FIG. 4 is a second perspective view of the multi-layered ladder of FIG. 1 with portions omitted;

FIG. 5 is a schematic perspective view of a multi-layered ladder according to embodiment 2 of the utility model;

FIG. 6 is a schematic isometric view of the multi-layered ladder of FIG. 5 with portions of the ladder omitted;

FIG. 7 is an enlarged schematic view of the multi-layered ladder of FIG. 6 at A;

FIG. 8 is a schematic isometric view of the multi-layered ladder of FIG. 7 with portions of the ladder omitted;

figure 9 is a schematic isometric view of the multi-layered ladder of figure 5 fully collapsed.

Reference numerals in fig. 1 to 9: 1-a ladder frame body; 2-ladder body; 3-a first hinge shaft; 4-a second hinge shaft; 5-a limiting mechanism; 11-a herringbone bracket; 12-a first connecting rod; 21-linkage main rod; 22-pedal; 23-a first connecting shaft; 24-a second connecting shaft; 51-limiting parts; 52-limiting columns; 53-a second connecting rod; 111-a chute; 511-hook.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are illustrative of some, but not all embodiments of the utility model and are not intended to limit the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "two sides", "bottom", "top", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "superior," "subordinate," "primary," "secondary," and the like are used for descriptive purposes only and may be used simply to more clearly distinguish between different components and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model will now be described in further detail with reference to the drawings and examples.

Example 1

Figures 1-4 schematically illustrate a multi-layered ladder according to one embodiment of the utility model.

As shown in fig. 1-4, the multi-layered ladder includes at least:

the bottom of the ladder frame body 1 can be propped against an external supporting surface;

a ladder main body 2 mounted to the ladder frame body 1;

the ladder frame body 1 comprises a pair of foldable herringbone brackets 11;

the ladder main body 2 includes a pair of link rods 21 slidably mounted to a pair of the herringbone brackets 11, and a plurality of pedals 22 disposed in sequence in the height direction of the herringbone brackets 11. One end of the pedal 22 is hinged with the pair of herringbone brackets 11, the other end of the pedal is hinged with the linkage main rod 21, and the linkage main rod 21 is in sliding fit with the herringbone brackets 11.

Preferably, the number of the pedals 22 in the present embodiment is three, and when the pedals 22 are completely folded, the three pedals 22 are rotatably positioned parallel to the herringbone bracket 11, and the three pedals 22 are in the same straight line.

The multi-layer ladder further comprises a first hinging shaft 3 and a sliding part, wherein a sliding groove 111 is formed in the inner side of one frame body of the herringbone bracket 11, the pedal 22 is hinged with the other frame body of the herringbone bracket 11, which is not provided with the sliding groove 111, and the sliding part is hinged with the linkage main rod 21 through the first hinging shaft 3 and is in sliding fit with the sliding groove 111. Thereby, the linkage main rod 21 can slide conveniently, folding is completed, and the chute 111 is arranged on the inner side surface of the herringbone bracket 11, so that the attractive appearance is strong.

The sliding member of the present embodiment may be a sliding block structure (not shown) that cooperates with the sliding slot 111, and the sliding block is preferably disposed in the sliding slot 111.

The multi-layer ladder further comprises a limiting mechanism 5, wherein the limiting mechanism 5 is in limiting fit with the linkage main rod 21 and is used for limiting the linkage main rod 21 in a fully unfolded state of the ladder. Thereby facilitating improved stability of the ladder in the fully extended state.

The limiting mechanism 5 comprises a limiting piece 51 arranged on the herringbone bracket 11 or on the linkage main rod 21 and a limiting post 52 arranged on the linkage main rod 21 or on the herringbone bracket 11, and the limiting piece 51 is in limiting fit with the limiting post 52.

One end of the stopper 51 is provided with a hook 511 which is fitted with a stopper post 52.

The multi-layer ladder further comprises a second hinge shaft 4, the limiting piece 51 is hinged with the linkage main rod 21 through the second hinge shaft 4, and the first hinge shaft 3 and the second hinge shaft 4 are the same hinge shaft.

The ladder frame body 1 further comprises a second connecting rod 53 connected with the pair of herringbone brackets 11, at least one second connecting rod 53 is arranged, and two end parts of the second connecting rod extend into the sliding groove 111. Thereby facilitating an increase in overall stability of the ladder.

The two stoppers 51 mounted on the pair of chevron holders 11 are independently provided or connected as an integral structure by a second connecting rod 53. The limiting parts 51 of the embodiment are of an integral structure formed by connecting the second connecting rods 53, and the two limiting parts 51 can be driven to move simultaneously by rotating the second connecting rods 53, so that the hooks 511 are far away from the limiting columns 52 to unlock or hook into the limiting columns 52 to lock.

The ladder main body 2 further includes a first connection shaft 23 and a second connection shaft 24, the first connection shaft 23 penetrates the step 22 and both ends of the first connection shaft are respectively hinged with two frame bodies on the same side of the pair of herringbone brackets 11, and the second connection shaft 24 penetrates the step 22 and both ends of the second connection shaft are respectively hinged with the pair of linkage main rods 21. Thereby facilitating the rotation and linkage of the pedals 22, and facilitating the folding and unfolding.

The utility model provides a multilayer ladder with a brand new structure, which is a ladder with a pedal 22 structure, and has large contact area with a human body and good stability when in use; the folding type Y-shaped bracket is provided with a linkage structure, can be folded, and has small occupied space, and the width after folding is the width of the Y-shaped bracket 11; more importantly, the linkage structure and the pedal 22 are arranged on the inner side of the herringbone bracket 11, so that the attractive appearance is strong.

Example 2

Figures 5-9 schematically illustrate a multi-layered ladder according to another embodiment of the utility model.

As shown in fig. 5 to 9, the multi-layered ladder of this embodiment is basically the same as that of embodiment 1 except that: the limit mechanism 5 is different in structure.

As shown in fig. 5 to 9, the shape and installation position of the stopper 51 of the multi-layered ladder of the present embodiment are improved.

As shown in fig. 7-8, the middle position of the limiting piece 51 is hinged with the herringbone bracket 11 through the second hinge shaft 4, and the first hinge shaft 3 is fixedly installed on one side surface of the linkage main rod 21, which is close to the sliding groove 111. The stopper post 52 and the first hinge shaft 3 are the same member. The upper part of the limiting piece 51 is provided with an arc-shaped fastener which can be buckled on the herringbone bracket 11; the lower end of the limiting member 51 is a hook 511, and the hook 511 is in limiting fit with the first hinge shaft 3 (i.e., the limiting post 52).

As shown in fig. 9, the multi-layered ladder of the present embodiment can be fully folded, and the width of the whole folded ladder is equal to the width of the herringbone bracket 11.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. A multi-layered ladder comprising at least:

the bottom of the ladder frame body (1) can be propped against an external supporting surface;

a ladder main body (2) mounted to the ladder frame body (1);

the ladder frame body (1) comprises a pair of foldable herringbone brackets (11);

the ladder main body (2) comprises a pair of linkage main rods (21) which are slidably arranged on a pair of herringbone supports (11) and a plurality of pedals (22) which are sequentially arranged along the height direction of the herringbone supports (11), one ends of the pedals (22) are hinged with the pair of herringbone supports (11), the other ends of the pedals are hinged with the linkage main rods (21), and the linkage main rods (21) are in sliding fit with the herringbone supports (11).

2. The multi-layer ladder according to claim 1, further comprising a first hinge shaft (3) and a sliding piece, wherein a sliding groove (111) is formed in the inner side of one of the frame bodies of the herringbone bracket (11), the pedal (22) is hinged with the other frame body, which is not provided with the sliding groove (111), of the herringbone bracket (11), and the sliding piece is hinged with the linkage main rod (21) through the first hinge shaft (3) and is in sliding fit with the sliding groove (111).

3. The multi-layered ladder according to claim 2, further comprising a limit mechanism (5), said limit mechanism (5) being in limit fit with said ganged main bar (21) for limiting said ganged main bar (21) in the fully extended state of the ladder.

4. A multi-layered ladder according to claim 3, characterized in that the spacing means (5) comprises a spacing member (51) mounted to the herringbone bracket (11) or to the linkage main rod (21) and a spacing post (52) mounted to the linkage main rod (21) or to the herringbone bracket (11), the spacing member (51) being in a spacing fit with the spacing post (52).

5. A multi-layered ladder according to claim 4, characterized in that one end of the stopper (51) is provided with a hook (511) cooperating with the stopper post (52).

6. The multi-layered ladder according to claim 4, further comprising a second hinge shaft (4), wherein the limiter (51) is hinged to the linkage main rod (21) through the second hinge shaft (4), and wherein the first hinge shaft (3) and the second hinge shaft (4) are the same hinge shaft.

7. The multi-layered ladder according to claim 4, further comprising a second hinge shaft (4), wherein the stopper (51) is hinged to the herringbone bracket (11) by the second hinge shaft (4), wherein the first hinge shaft (3) is mounted to the linkage main rod (21), and wherein the stopper post (52) and the first hinge shaft (3) are the same component.

8. A multi-layered ladder according to any one of claims 2-7, wherein the ladder frame (1) further comprises a first connecting rod (12) connecting a pair of the herringbone brackets (11), said first connecting rod (12) being at least one and extending into the runner (111) at both ends.

9. A multi-layered ladder according to any one of claims 4-7, wherein the spacing means (5) further comprises a second connecting rod (53), and wherein the two spacing members (51) mounted on a pair of the herringbone brackets (11) are arranged independently or are connected as a unitary structure by the second connecting rod (53).

10. A multi-layered ladder according to any one of claims 1-7, wherein the ladder body (2) further comprises a first connecting shaft (23) and a second connecting shaft (24), the first connecting shaft (23) extending through the tread (22) and being hinged at both ends to two frames on the same side of a pair of the herringbone brackets (11), respectively, and the second connecting shaft (24) extending through the tread (22) and being hinged at both ends to a pair of the linked main bars (21), respectively.