A folding staircase

Abstract

The utility model discloses a folding staircase, comprising a folding staircase body that can be folded against a wall, a handrail is arranged on a movable steel plate beam on the folding staircase body, a plurality of connecting plates are fixedly connected to the bottom of the handrail, a plurality of limiting sleeves are fixedly connected to one side of the movable steel plate beam, the lower end of the connecting plate is slidably inserted in the limiting sleeve, and a positioning mechanism for fixing the connecting plate is arranged on the limiting sleeve; the utility model can pull the handrail upward and fix it when the staircase is in use through the connecting plate, the limiting sleeve and the handrail, so as to ensure the firmness and stability of the handrail when in use; and when the staircase is not in use, the handrail can be stored downward, so as to reduce the longitudinal space occupation and further improve the overall storage effect of the staircase.

Description

Technical Field

[0001] The utility model relates to the technical field of stairs, in particular to a folding staircase. Background Art

[0002] A Chinese patent with announcement number CN214272710U discloses a wall-mounted sliding staircase, comprising a first steel plate beam, a second steel plate beam, multiple groups of steel pedals, multiple groups of stainless steel hinges, multiple groups of columns, handrails and two groups of cylinders. The first steel plate beam is fixed to the wall, one end of the multiple groups of steel pedals is connected to the first steel plate beam through a stainless steel hinge, and the other end is connected to the steel pedal, and the multiple groups of steel pedals are arranged one by one from top to bottom, multiple groups of columns are evenly arranged on the second steel plate beam, and are screwed to the second steel plate beam by bolts, the handrails are fixed to the columns by screws, two groups of cylinders are fixed to the first steel plate beam, and the output ends of the cylinders are connected to the steel pedals.

[0003] When not in use, the wall-mounted sliding staircase can be folded up against the wall, thereby improving the aesthetics of the overall structure of the staircase and saving space.

[0004] However, the handrail of the above-mentioned wall-mounted sliding staircase is fixed to the staircase by bolts, and the handrail cannot be further folded after the staircase is stored against the wall.

[0005] For this purpose we propose a folding staircase. Utility Model Content

[0006] The purpose of the utility model is to provide a folding staircase, so as to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A folding staircase comprises a folding staircase body which can be folded against a wall, a handrail is arranged on a movable steel plate beam on the folding staircase body, a plurality of connecting plates are fixedly connected to the bottom of the handrail, a plurality of limiting sleeves are fixedly connected to one side of the movable steel plate beam, the lower end of the connecting plate is slidably inserted in the limiting sleeve, and a positioning mechanism for fixing the connecting plate is arranged on the limiting sleeve.

[0009] In a folding staircase according to the utility model, the positioning mechanism includes a vertical plate, the vertical plate is fixedly connected to the limiting sleeve, the vertical plate is provided with an assembly groove on one side close to the connecting plate, a clamp is slidably arranged inside the assembly groove, the clamp is fixedly connected to a pull rod at one end away from the connecting plate, the pull rod is fixedly connected to a pull block after the end away from the clamp slides through the vertical plate, a limiting groove is provided at the lower end of one side of the connecting plate, the end of the clamp away from the pull block can be inserted into the limiting groove, a first spring is sleeved on the pull rod, one end of the first spring abuts against one end of the assembly groove, and the other end of the first spring abuts against one side of the clamp.

[0010] In a folding staircase according to the utility model, two limit sleeves are provided on the same connecting plate, the two limit sleeves are arranged in upper and lower positions, and the vertical plate is fixed between the two limit sleeves.

[0011] In a folding staircase according to the utility model, the bottom of the connecting plate is fixedly connected to a limiting block, and the top of the limiting block can abut against the bottom of the limiting sleeve.

[0012] A folding staircase according to the utility model further includes a push rod, which is slidably arranged on one side of the movable steel plate beam through a plurality of guide sleeves, and a plurality of extrusion blocks are fixedly connected to the push rod. When the push rod is pushed upward along the inclined direction of the folding staircase body, the extrusion blocks can squeeze the pull-out blocks, thereby driving the pull-out blocks to move upward.

[0013] In a folding staircase according to the utility model, a second spring is sleeved on the push rod, one end of the second spring abuts against one side of the guide sleeve, and the other end of the second spring abuts against one side of the extrusion block.

[0014] In a folding staircase according to the utility model, a push block is fixedly connected to the lower end of the push rod.

[0015] In a folding staircase according to the utility model, the handrail is a stainless steel handrail.

[0016] The utility model has at least the following beneficial effects:

[0017] The utility model can pull the handrail upward and fix it by the connecting plate, the limiting sleeve and the handrail when the stairs are in use, thereby ensuring the firmness and stability of the handrail when in use; and when the stairs are not in use, the handrail can be folded downward to reduce the longitudinal space occupied, further improving the overall storage effect of the stairs;

[0018] By setting a push rod in cooperation with the extrusion block, when the handrail is stored, the push rod can be pushed and pulled upward along the inclination direction of the folding staircase body, thereby unlocking all the connecting plates at the same time, so that the handrail can be quickly stored;

[0019] The squeezing block can be reset by the second spring so that the push rod can be pushed to unlock the connecting plate next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the folding staircase of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model when it is stored against a wall;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting plate of the utility model;

[0024] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0025] Figure 5 for Figure 3 A schematic diagram of the enlarged structure of part B in FIG.

[0026] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of part C in.

[0027] Description of Figure Numbers:

[0028] 1. Folding staircase body; 101. Movable steel plate beam; 2. Handrail; 3. Push rod; 301. Push block; 302. Guide sleeve; 303. Second spring; 304. Extrusion block; 4. Limit sleeve; 5. Connecting plate; 501. Limit block; 502. Limit groove; 6. Vertical plate; 601. Assembly groove; 7. Pull-out block; 8. First spring; 9. Clamp. DETAILED DESCRIPTION

[0029] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0030] Please refer to Figures 1 to 6As shown, the present embodiment provides a folding staircase, comprising a folding staircase body 1 that can be folded against a wall, a handrail 2 is arranged on a movable steel plate beam 101 on the folding staircase body 1, a plurality of connecting plates 5 are fixedly connected to the bottom of the handrail 2, a plurality of limiting sleeves 4 are fixedly connected to one side of the movable steel plate beam 101, the lower end of the connecting plate 5 is slidably inserted in the limiting sleeve 4, in the present embodiment, in order to improve the stability of the connecting plate 5 when it moves up and down, two limiting sleeves 4 are arranged on the same connecting plate 5, and the two limiting sleeves 4 are arranged in an upper and lower manner, and a positioning mechanism for fixing the connecting plate 5 is arranged on the limiting sleeve 4, wherein a vertical plate 6 is fixedly connected to the limiting sleeve 4, and a mounting groove 601 is provided on the side of the vertical plate 6 close to the connecting plate 5. A clamping head 9 is slidingly provided inside the assembly groove 601, and a pull rod is fixedly connected to the end of the clamping head 9 away from the connecting plate 5. The end of the pull rod away from the clamping head 9 slides out of the vertical plate 6 and is fixedly connected to the pull block 7. A limiting groove 502 is provided at the lower end of one side of the connecting plate 5, and the end of the clamping head 9 away from the pull block 7 can be inserted into the limiting groove 502. A first spring 8 is sleeved on the pull rod, one end of the first spring 8 abuts against one end of the assembly groove 601, and the other end of the first spring 8 abuts against one side of the clamping head 9. The vertical plate 6 is fixed between the two limiting sleeves 4, and the bottom of the connecting plate 5 is fixedly connected to the limiting block 501, and the top of the limiting block 501 can abut against the bottom of the limiting sleeve 4. This arrangement can further prevent the connecting plate 5 from being pulled out of the limiting sleeve 4.

[0031] By adopting the above technical scheme, the folding method of the folding stair body 1 is well known in the art and will not be elaborated here. When the folding stair body 1 is needed, the folding stair body 1 is first unfolded, and then the handrail 2 is pulled upward. As the handrail 2 continues to rise, the connecting plate 5 continues to move upward, and when the limiting groove 502 moves to the clamping head 9, the clamping head 9 is inserted into the limiting groove 502 under the elastic force of the first spring 8, and the connecting plate 5 is locked to ensure that the handrail 2 will not shake up and down or left and right when in use. At this time, the unfolding operation of the handrail 2 is completed. When the folding stair body 1 is not in use, the connecting plate 5 is first unlocked, that is, the pulling block 7 is pulled away from the connecting plate 5, so that the clamping head 9 is pulled out of the limiting groove 502. At this time, the handrail 2 slides downward under its own gravity to complete the storage of the handrail 2, and then the folding stair body 1 can be stored against the wall.

[0032] Specifically, in order to unlock all the connection plates 5 at the same time, a push rod 3 is provided, and the push rod 3 is slidably arranged on one side of the movable steel plate beam 101 through a plurality of guide sleeves 302, that is, a plurality of guide sleeves 302 are equidistantly fixed on one side of the movable steel plate beam 101, and the push rod 3 is slidably inserted on the guide sleeve 302, and a plurality of extrusion blocks 304 are fixedly connected to the push rod 3. When the push rod 3 is pushed upward along the inclination direction of the folding staircase body 1, the extrusion blocks 304 can squeeze the pull-out blocks 7, thereby driving the pull-out blocks 7 to move upward. By adopting the above scheme, when the handrail 2 needs to be stored, the push rod 3 is pushed upward along the inclination direction of the folding staircase body 1, so that the extrusion blocks 304 squeeze the pull-out blocks 7, and as the pull-out blocks 7 are continuously squeezed in the direction away from the connection plates 5, the clamping head 9 is pulled out from the limiting groove 502, thereby completing the simultaneous unlocking operation of all the connection plates 5.

[0033] Specifically, in order to facilitate pushing the push rod 3, a push block 301 is fixedly connected to the lower end of the push rod 3 to facilitate the operator to apply force.

[0034] Specifically, a second spring 303 is sleeved on the push rod 3, one end of the second spring 303 abuts against one side of the guide sleeve 302, and the other end of the second spring 303 abuts against one side of the extrusion block 304. Through this arrangement, after the connecting plate 5 is unlocked and the push rod 3 is released, the extrusion block 304 is reset under the elastic force of the second spring 303, so that the push rod 3 can be pushed to unlock the connecting plate 5 next time.

[0035] Specifically, in the present embodiment, in order to ensure the strength of the handrail 2, the handrail 2 is a stainless steel handrail, so that the handrail 2 has good strength and is not easily damaged, thereby ensuring its protective effect.

[0036] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0037] Working principle: when the folding stair body 1 is needed, the folding stair body 1 is first unfolded, and then the handrail 2 is pulled upward. As the handrail 2 continues to rise, the connecting plate 5 continues to move upward. When the limit groove 502 moves to the clamping head 9, the clamping head 9 is inserted into the limit groove 502 under the elastic force of the first spring 8 to lock the connecting plate 5. When the folding stair body 1 is not needed, the push block 301 is pushed upward along the inclination direction of the folding stair body 1, so that the squeezing block 304 squeezes the pulling block 7. As the pulling block 7 is continuously squeezed in the direction away from the connecting plate 5, the clamping head 9 is pulled out of the limit groove 502, thereby completing the simultaneous unlocking operation of all the connecting plates 5. At this time, the handrail 2 slides downward under its own gravity to complete the storage of the handrail 2, and then the folding stair body 1 can be stored against the wall.

[0038] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A folding staircase, characterized in that: The invention comprises a foldable staircase body (1) capable of being folded against a wall, a handrail (2) being arranged on a movable steel plate beam (101) on the foldable staircase body (1), a plurality of connecting plates (5) being fixedly connected to the bottom of the handrail (2), a plurality of limiting sleeves (4) being fixedly connected to one side of the movable steel plate beam (101), the lower end of the connecting plate (5) being slidably inserted into the limiting sleeve (4), and a positioning mechanism for fixing the connecting plate (5) being arranged on the limiting sleeve (4).

2. A folding staircase according to claim 1, characterized in that: The positioning mechanism comprises a vertical plate (6), wherein the vertical plate (6) is fixedly connected to the limiting sleeve (4), a mounting groove (601) is provided on a side of the vertical plate (6) close to the connecting plate (5), a clamping head (9) is slidably provided inside the mounting groove (601), an end of the clamping head (9) away from the connecting plate (5) is fixedly connected to a pull rod, and the end of the pull rod away from the clamping head (9) slides out of the vertical plate (6) and is fixedly connected to a pull block (7), a limiting groove (502) is provided at the lower end of one side of the connecting plate (5), and the end of the clamping head (9) away from the pull block (7) can be inserted into the limiting groove (502), and a first spring (8) is sleeved on the pull rod, one end of the first spring (8) abuts against one end of the mounting groove (601), and the other end of the first spring (8) abuts against one side of the clamping head (9).

3. A folding staircase according to claim 2, characterized in that: Two limiting sleeves (4) are provided on the same connecting plate (5), the two limiting sleeves (4) are arranged in an upper and lower position, and the vertical plate (6) is fixed between the two limiting sleeves (4).

4. A folding staircase according to claim 2, characterized in that: The bottom of the connecting plate (5) is fixedly connected to a limiting block (501), and the top of the limiting block (501) can abut against the bottom of the limiting sleeve (4).

5. A folding staircase according to claim 2, characterized in that: It also includes a push rod (3), which is slidably arranged on one side of the movable steel plate beam (101) through a plurality of guide sleeves (302), and a plurality of extrusion blocks (304) are fixedly connected to the push rod (3). When the push rod (3) is pushed upward along the inclined direction of the folding staircase body (1), the extrusion blocks (304) can squeeze the pull-out blocks (7), thereby driving the pull-out blocks (7) to move upward.

6. A folding staircase according to claim 5, characterized in that: The push rod (3) is sleeved with a second spring (303), one end of the second spring (303) abuts against one side of the guide sleeve (302), and the other end of the second spring (303) abuts against one side of the extrusion block (304).

7. A folding staircase according to claim 6, characterized in that: The lower end of the push rod (3) is fixedly connected with a push block (301).

8. The folding staircase according to claim 6, characterized in that: The handrail (2) is a stainless steel handrail.

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