CN210422447U

CN210422447U - But angle regulation's collapsible stair

Info

Publication number: CN210422447U
Application number: CN201920881109.9U
Authority: CN
Inventors: 庄国礼
Original assignee: Shanyuan Co Ltd
Current assignee: Shanyuan Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-04-28
Anticipated expiration: 2029-06-12

Abstract

The utility model provides a foldable stair with adjustable angle, belonging to the technical field of climbing ladder, comprising two side brackets and a plurality of pedals arranged between the two side brackets, wherein the two ends of the pedals are respectively connected with the two side brackets in a rotating way; each side bracket consists of an upper upright column and a lower upright column which are parallel to each other; the lower end of each side bracket is provided with a foot sleeve; the upper upright column and the lower upright column are connected with the side surface of each pedal through connecting pieces, a metal ring body is sleeved on each connecting piece, and the end part of the metal ring body, which is positioned on the inner side, penetrates through the side plate of each pedal and then is positioned in each pedal. Adopt above-mentioned structure, eliminated the curb plate of current like product and collateral branch frame direct contact's defect, prevent curb plate and the collateral branch frame direct contact of footboard, reduce the frictional force between collateral branch frame and the footboard, be convenient for fold and open folding ladder, reduced the wearing and tearing of footboard and collateral branch frame moreover.

Description

But angle regulation's collapsible stair

Technical Field

The utility model relates to a can be at the ladder of angle regulation between two not co-altitude, specifically indicate a ladder type can change the height between inclination and the both ends according to particular case.

Background

A scaffold staircase, which is a device for climbing up and down a side wall of a building, and a ladder, which is a continuous step for connecting two floors, are widely used as components for a landing passage in a scaffold. Generally speaking, in different use places, users need to depend on the place environment, the needed inclination angles are different, when the angle is larger, a ladder is used, and when the angle is smaller, a scaffold stair is used; common scaffold stairs and ladders generally consist of two upright posts and a plurality of pedals, and cannot be folded; be applied to the unclear facade place of inclination, and the climber bears a burden when more, then require the ladder easily to scramble, but this type of ladder also adopts bilayer structure, and it comprises two collateral branch framves and the polylith footboard between two collateral branch framves, but at present this type of bilayer ladder also adopts beta structure, nevertheless because there is direct contact between footboard and the collateral branch frame, not only hard when folding, the wearing and tearing of contact department are great moreover.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a foldable stair with convenient folding and adjustable angle. The ladder is adjustable to the field environment in a simple manner, without the use of special tools, to adapt to the various conditions of grade and height mentioned above.

The ladder is very simple in construction, can be manufactured quickly and at low cost, and reduces losses during use.

In order to achieve the above object, the utility model adopts the following technical scheme: the foldable stair with the adjustable angle comprises two side brackets and a plurality of pedals arranged between the two side brackets, wherein two ends of each pedal are respectively connected with the two side brackets in a rotating manner; each side bracket consists of an upper upright column and a lower upright column which are parallel to each other; the lower end of each side bracket is provided with a foot sleeve; the upper upright column and the lower upright column are connected with the side surface of each pedal through connecting pieces, a metal ring body is sleeved on each connecting piece, and the end part of the metal ring body, which is positioned on the inner side, penetrates through the side plate of each pedal and then is positioned in each pedal. In order to facilitate folding, the pedal and the two side supports necessarily need to rotate relatively, a metal ring body is sleeved on each connecting piece, so that the side plates of the pedal are prevented from being in direct contact with the side supports, the friction force between the side supports and the pedal is reduced, the folding ladder is convenient to fold and unfold, and the abrasion between the pedal and the side supports is reduced.

Preferably, the metal ring body comprises a metal cylinder and an outer ring arranged at one end of the metal cylinder, and the metal cylinder and the outer ring are integrally formed.

Preferably, the connecting piece consists of a screw and a nut, the metal ring body is sleeved on a screw rod of the screw, and the nut is positioned in the pedal; the screw is provided with two gaskets, one of the gaskets is contacted with the inner side surface of the upper upright post or the lower upright post, the other gasket is positioned in the pedal and is contacted with the screw cap, and the metal ring body is positioned between the two gaskets.

Preferably, the other surface of the gasket contacting the inner side surface of the upper or lower pillar is in contact with the outer ring. Namely, the other surface of the gasket contacted with the inner side surface of the upper upright post is contacted with the outer ring; the other surface of the gasket contacted with the inner side surface of the lower upright post is contacted with the outer ring.

In order to keep the stability after folding and prevent the pedal from rotating relative to the two side brackets, a telescopic assembly is arranged in each side bracket, and comprises an upper telescopic rod, a lower telescopic rod and an accommodating part arranged between the upper telescopic rod and the lower telescopic rod; the upper end of the upper telescopic rod is rotatably connected with the upper upright post, and the lower end of the upper telescopic rod is movably connected with the accommodating part; the lower end of the lower telescopic rod is rotatably connected with the lower upright post, and the upper end of the lower telescopic rod is movably connected with the accommodating part. When the angle-adjustable foldable stair is opened, after the angles of the pedal and the two side supports are adjusted, the nuts at the joints of the two ends of the telescopic assembly and the upper stand column and the lower stand column are respectively locked, and the telescopic assembly is prevented from rotating relative to the upper stand column and the lower stand column.

Preferably, each connecting piece for connecting the top pedal and the side bracket and for connecting the bottom pedal and the side bracket is sleeved with a plastic ring. The plastic ring is used for reducing metal loss and providing proper friction force to avoid accidents when the ladder is folded unintentionally.

Preferably, the plastic ring is located in the pedal, and one end of the plastic ring is in contact with a gasket located in the pedal.

Preferably, still include at least a set of handrail sleeve, every handrail sleeve includes two and is located the same height and fixes two tubular metal resonator on two upper vertical posts lateral surface respectively. Handrails convenient to mount and take down are placed on the handrail sleeve for the climber to use.

The upper ends of the two lower upright posts are respectively provided with a hook.

The beneficial technical effects are as follows: in order to facilitate folding, the pedal and the two side supports necessarily need to rotate relatively, a metal ring body is sleeved on each connecting piece, the defect that the side plates of the existing like products are in direct contact with the side supports is overcome, the side plates of the pedal are prevented from being in direct contact with the side supports, the friction force between the side supports and the pedal is reduced, the folding ladder is convenient to fold and unfold, and the abrasion between the pedal and the side supports is reduced.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a perspective view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2;

FIG. 5 is a partial cross-sectional view A of FIG. 1;

FIG. 6 is a partial cross-sectional view B of FIG. 1;

FIG. 7 is a left side view of a small angle application of the scaffold stairway;

FIG. 8 is a left side view of the ladder in a wide angle application;

FIG. 9 is a left side view of a low angle application of a prior art scaffold stairway;

figure 10 is a left side view of a wide angle application of the prior art ladder.

Detailed Description

In order to make the technical field better understand the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and embodiments.

As shown in fig. 1-8, the foldable stairway with adjustable angle comprises two side brackets 1 and a plurality of pedals 2 arranged between the two side brackets, wherein two ends of each pedal 2 are respectively connected with the two side brackets 1 in a rotating manner; each side bracket consists of an upper upright column 101 and a lower upright column 102 which are parallel to each other; the lower end of each side bracket is provided with a foot sleeve 3; the upper upright post 101 and the lower upright post 102 are connected with the side surface of each pedal through a connecting piece 4, a metal ring body 5 is sleeved on each connecting piece, and the end part of the metal ring body 5 positioned on the inner side penetrates through the side plate of the pedal and then is positioned in the pedal 2.

The plurality of steps should be understood as at least three steps, since the number of steps 2 on the folding ladder is not certain. Specifically, the pedal is a rectangular body formed by buckling the front end and the rear end of a panel and enclosing a left side plate and a right side plate, the rectangular body is hollow, and the parts of the pedal 2, which are rotatably connected with the two side brackets 1, are the left side plate and the right side plate of the pedal.

In order to facilitate folding, the pedal and the two side supports necessarily need to rotate relatively, a metal ring body is sleeved on each connecting piece, so that the side plates of the pedal are prevented from being in direct contact with the side supports, the friction force between the side supports and the pedal is reduced, the folding ladder is convenient to fold and unfold, and the abrasion between the pedal and the side supports is reduced.

The ferrule body 5 in this embodiment includes a metal cylinder 501, and an outer ring 502 disposed at one end of the metal cylinder, where the metal cylinder 501 and the outer ring 502 are integrally formed.

The connecting member 4 of the present embodiment is composed of a screw 401 and a nut 402, the metal ring body 5 is sleeved on the screw of the screw 401, and the nut 402 is located in the pedal 2; two gaskets 6 are arranged on the screw, wherein one gasket is contacted with the inner side surface of the upper upright column 101 or the lower upright column 102, namely, the gasket at the joint of the upper upright column 101 and the pedal side surface is contacted with the inner side surface of the upper upright column 101, and the gasket at the joint of the lower upright column 102 and the pedal side surface is contacted with the inner side surface of the lower upright column 102; the other gasket is positioned in the pedal and is contacted with the screw cap, and the metal ring body is positioned between the two gaskets. It is clear that other constructions of the connecting element 4 are possible, such as rivets, which are used to connect the upper and

lower uprights

101, 102 of the side bracket to the step, and that the upper and

lower uprights

101, 102 can be rotated with respect to the step to facilitate folding and unfolding of the ladder.

Also, the other surface of the spacer 6, which is in contact with the inner side surface of the upper or

lower pillar

101 or 102, is in contact with the outer ring 502. Namely, the other surface of the gasket contacted with the inner side surface of the upper upright post is contacted with the outer ring; the other surface of the gasket contacted with the inner side surface of the lower upright post is contacted with the outer ring.

In order to maintain the stability of the folded ladder and prevent the pedal 2 from rotating relative to the two side brackets 1, a telescopic assembly 7 is arranged in each side bracket, and the telescopic assembly 7 comprises an upper telescopic rod 701, a lower telescopic rod 702 and a containing part 703 arranged between the upper telescopic rod and the lower telescopic rod; the upper end of the upper telescopic rod is rotatably connected with the upper upright post 101, and the lower end of the upper telescopic rod is movably connected with the accommodating part 703; the lower end of the lower telescopic rod 702 is rotatably connected with the lower upright post 102, and the upper end is movably connected with the accommodating part 703. When the foldable ladder is opened, after the angles of the pedals 2 and the two side brackets 1 are adjusted, the nuts 402 at the joints of the two ends of the telescopic assembly and the upper upright post and the lower upright post respectively are locked, so that the telescopic assembly is prevented from rotating relative to the upper upright post and the lower upright post. The telescopic assembly may be a commercially available one.

Further, each connecting piece 4 for connecting the top pedal 2 and the side bracket 1 and for connecting the bottom pedal 2 and the side bracket 1 is sleeved with a plastic ring 8. The plastic ring has the effects of reducing metal loss, being easy to open when being folded and reducing accidents.

The plastic ring 8 is located in the pedal 2, and one end of the plastic ring is in contact with the gasket 6 located in the pedal, as shown mainly in fig. 6.

The handrail device further comprises at least one group of handrail sleeves 9, wherein each group of handrail sleeves comprises two metal pipes which are positioned at the same height and are fixedly arranged on the outer side surfaces of the two upper vertical columns 101 respectively. Handrails convenient to mount and take down are placed on the handrail sleeve for the climber to use. The number of arm sleeves 9 may be determined according to the length of the ladder, in this embodiment two sets of arm sleeves 9 are used.

The upper ends of the two lower upright posts are respectively provided with a hook 10, so that the upper ends of the ladder can be conveniently hung on the top inside, the folding ladder is prevented from moving, and potential safety hazards are left.

The use of prior art scaffold stairways and ladders is illustrated with reference to figures 9 to 10.

In the above description, it should be noted that unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be direct or indirect via an intermediate medium, and the connection may be internal to the two components. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the present invention has been described in terms of embodiments, those skilled in the art will recognize that there are numerous variations and modifications of the present invention without departing from the spirit of the invention, and it is intended that the appended claims encompass such variations and modifications without departing from the spirit of the invention.

Claims

1. The foldable stair with the adjustable angle comprises two side brackets and a plurality of pedals arranged between the two side brackets, wherein two ends of each pedal are respectively connected with the two side brackets in a rotating manner; each side bracket consists of an upper upright column and a lower upright column which are parallel to each other; the lower end of each side bracket is provided with a foot sleeve; the upper upright column and the lower upright column are connected with the side surface of each pedal through connecting pieces, and the pedal is characterized in that a metal ring body is sleeved on each connecting piece, and the end part of the metal ring body, which is positioned on the inner side, penetrates through the side plate of the pedal and then is positioned in the pedal.

2. The foldable stairway of claim 1, wherein the metal ring comprises a metal cylinder, an outer ring provided at one end of the metal cylinder, and the metal cylinder and the outer ring are integrally formed.

3. The foldable stairway with the adjustable angle as claimed in claim 2, wherein the connecting piece is composed of a screw and a nut, the metal ring body is sleeved on the screw rod of the screw, and the nut is positioned in the tread; the screw is provided with two gaskets, one of the gaskets is contacted with the inner side surface of the upper upright post or the lower upright post, the other gasket is positioned in the pedal and is contacted with the screw cap, and the metal ring body is positioned between the two gaskets.

4. An angularly adjustable collapsible stairway as claimed in claim 3 wherein the other face of the spacer which contacts the inner face of the upper or lower upstand contacts the outer collar.

5. An angle adjustable collapsible stairway as claimed in claim 2 wherein a telescoping assembly is provided in each side bracket, said telescoping assembly including an upper telescoping bar, a lower telescoping bar and a receiving portion therebetween; the upper end of the upper telescopic rod is rotatably connected with the upper upright post, and the lower end of the upper telescopic rod is movably connected with the accommodating part; the lower end of the lower telescopic rod is rotatably connected with the lower upright post, and the upper end of the lower telescopic rod is movably connected with the accommodating part.

6. An angle adjustable collapsible stairway as claimed in claim 3 wherein each of the connectors for connecting the top tread to the side supports and for connecting the bottom tread to the side supports is provided with a plastic ring.

7. The stair of claim 6, wherein the plastic ring is located within the tread and one end of the plastic ring contacts a gasket located within the tread.

8. An angle-adjustable collapsible stairway as claimed in claim 2 further including at least one set of arm rest sleeves, each set of arm rest sleeves including two metal tubes at the same height and secured to the outer sides of the two upper posts respectively.

9. An angle adjustable collapsible stairway as claimed in claim 2 wherein a hook is provided at each of the upper ends of the two lower uprights.