Folding stair supporting structure

Abstract

The utility model discloses a folding type stair supporting structure which comprises two guide rail supports, a transverse swing rod, longitudinal swing rods and a middle hinge shaft, the two guide rail supports are both provided with coupling connecting parts, the two coupling connecting parts are movably connected to the two ends of the transverse swing rod, the bottoms of the two ends of the transverse swing rod are both connected with the longitudinal swing rods, and the middle hinge shaft is connected with the longitudinal swing rods. The two longitudinal swing rods are connected through a supporting connecting rod. According to the folding staircase, the folding design is adopted, the staircase can be attached to the front sides of the two guide rail supports when being folded, and the staircase and the guide rail supports can be integrally placed on the wall face in the later period in an abutting mode; and when being taken out, the transverse swing rod, the longitudinal swing rod and the supporting connecting rod can be completely unfolded through the limiting effect that the sliding part slides along the guide rail bracket and are matched with the movable connectivity of the middle hinging shaft and the coupling connecting part, and the transverse swing rod, the longitudinal swing rod and the supporting connecting rod lean against a specified position for use through the guide rail bracket.

Description

Technical Field

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

[0002] A component used for vertical communication between floors in a building. It is used for communication between floors and when there is a large height difference. The horizontal projection distance between the lowest and highest steps of a staircase is the step length, and the total height of the steps is the step height.

[0003] The existing stair support mechanism is simple, with only simple support on the bottom stair board. The stair boards used at high positions lack support at the suspended positions, resulting in poor stability of the stair boards. The existing stairs are directly installed on the wall, and the overall fixed design makes the stairs unable to be folded, which takes up a large amount of space and urgently needs to be developed. Utility Model Content

[0004] The purpose of the present invention is to provide a foldable staircase supporting structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a foldable staircase support structure, comprising a guide rail bracket, a transverse rocker arm, a longitudinal rocker arm and a central hinge shaft, wherein two guide rail brackets are provided, and both guide rail brackets are provided with an axial connection part, and the two axial connection parts are movably connected to the two ends of the transverse rocker arm, and the bottoms of the two ends of the transverse rocker arm are connected to the longitudinal rocker arm, and the two longitudinal rockers are connected by a supporting connecting rod, and the middle part of the longitudinal rocker arm is movably connected to the central hinge shaft, and the setting of the central hinge shaft facilitates the folding movement of the stair structure.

[0006] Preferably, support sleeves are provided between the transverse rocker arm and the support link, and between the support link and the middle hinge shaft.

[0007] Preferably, both ends of the middle hinge shaft are sleeved with adaptive connecting sleeves, and the adaptive connecting sleeves are connected to the supporting abutment portion. The setting of the adaptive connecting sleeves can adapt to the rotation and folding activities of the middle hinge shaft.

[0008] Preferably, the rear side of the axial connection part is connected to a sliding part, and the sliding part is slidably arranged inside the guide rail bracket. The sliding part slides along the guide rail bracket to adapt to the movement of the transverse swing arm and the overall folding operation of the stairs.

[0009] Preferably, the interior of the sliding portion is connected to a fixed connector, and the exterior of the sliding portion is provided with a locking sleeve. The provision of the locking sleeve can lock the fixed connector, thereby improving the fixing stability and avoiding loosening in the later stage.

[0010] Preferably, one end of the fixed connector is provided with a sliding portion and an axial connection portion which are connected to the locking sleeve, and the fixed connector fixes the axial connection portion in the sliding portion.

[0011] Preferably, two built-in limit sliding blocks are symmetrically arranged inside the support sleeve, and the two built-in limit sliding blocks are connected to each other through a supporting buffer spring. The two built-in limit sliding blocks are connected to a support rod, and the two support rods are symmetrical and pass through the top and bottom of the support sleeve. The support rod can provide support for the transverse rocker arm and the support link, as well as between the support link and the middle hinge shaft. The elasticity of the supporting buffer spring and the limiting property of the sliding movement of the built-in limit sliding block in the support sleeve can assist the two support rods to buffer the pressure on the transverse rocker arm, the support link and the middle hinge shaft, thereby improving the service life of the support structure.

[0012] Preferably, the end of the support rod is connected with a supporting abutment portion, and the support rod is connected to the transverse rocker arm and the supporting link respectively through the supporting abutment portion.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) This foldable stair support structure adopts a foldable design in the staircase of the utility model. When folded, it can be attached to the front side of the two guide rail brackets. Later, the guide rail brackets can be placed against the wall as a whole. When taken out, the sliding part can slide along the guide rail brackets to limit the position and then rotate at 0 degrees in conjunction with the movable connection of the middle hinge shaft and the shaft connection part, so that the horizontal swing arm, the longitudinal swing arm and the support link are fully unfolded and placed against the designated position through the guide rail brackets for use;

[0015] (2) The folding stair support structure is provided with a plurality of support mechanisms between the transverse swing arm and the support link, and between the support link and the middle hinge shaft. The support buffer spring provided in the support mechanism utilizes its own rebound reset property to enable the two built-in limit sliding blocks and the connected support rod to provide reverse support force between the transverse swing arm and the support link, and between the support link and the middle hinge shaft. While providing support, it also effectively buffers the pressure on the support link and the middle hinge shaft, thereby improving the structural stability of the transverse swing arm, the support link and the middle hinge shaft. The structure of the support abutment portion is a trapezoidal stable structure, which effectively improves the stability of the folding staircase in use.

[0016] (3) This type of folding stair support structure can adapt to the movement of the auxiliary transverse swing arm, the longitudinal swing arm, the middle hinge shaft and the axial connection part by sliding along the guide rail bracket on the sliding part. By using the fixed connection part and the locking sleeve in combination, the axial connection part and the connected accessories can be easily disassembled as a whole, and the folding stair body can be separated from the two guide rail brackets, which is convenient for carrying and transporting, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0019] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0020] Figure 4 This is a side view structural diagram of the utility model;

[0021] Figure 5 For this utility model Figure 4 Enlarged structural diagram at point C in the middle.

[0022] In the figure: 1. Guide rail bracket; 2. Transverse rocker arm; 3. Longitudinal rocker arm; 4. Support connecting rod; 5. Middle hinge shaft; 6. Axial connection part; 7. Sliding part; 8. Fixed connection piece; 9. Locking sleeve; 10. Support sleeve; 11. Built-in limit sliding block; 12. Support buffer spring; 13. Support rod; 14. Support abutment part; 15. Adaptive connection sleeve. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The utility model provides an embodiment: a folding staircase support structure, including a guide rail bracket 1, a transverse swing arm 2, a longitudinal swing arm 3 and a middle hinge shaft 5. Two guide rail brackets 1 are provided, and the two guide rail brackets 1 are both provided with an axial connection part 6. The two axial connection parts 6 are movably connected to the two ends of the transverse swing arm 2. The bottoms of the two ends of the transverse swing arm 2 are connected to the longitudinal swing arm 3. The two longitudinal swing arms 3 are connected by a supporting link 4, and the middle part of the longitudinal swing arm 3 is movably connected to the middle hinge shaft 5.

[0025] Support sleeves 10 are provided between the transverse rocker arm 2 and the supporting link 4 , and between the supporting link 4 and the central hinge shaft 5 .

[0026] Adaptive connecting sleeves 15 are sleeved on both ends of the middle hinge shaft 5 , and the adaptive connecting sleeves 15 are connected to the supporting abutment portion 14 .

[0027] The rear side of the axial connection portion 6 is connected to a sliding portion 7 , and the sliding portion 7 is slidably disposed inside the guide rail bracket 1 .

[0028] The interior of the sliding part 7 is connected to a fixed connecting piece 8, and the exterior of the sliding part 7 is provided with a locking sleeve 9. By using the fixed connecting piece 8 and the locking sleeve 9 in combination, the axial connecting part 6 and the connected accessories can be conveniently disassembled as a whole, and the folding staircase body can be separated from the two guide rail brackets 1, which is convenient for carrying and transporting.

[0029] One end of the fixed connecting member 8 passes through the sliding portion 7 and the axial connecting portion 6 and is connected to the locking sleeve 9.

[0030] Two built-in limit sliding blocks 11 are symmetrically arranged inside the support sleeve 10. The two built-in limit sliding blocks 11 are connected to each other through a supporting buffer spring 12. A support rod 13 is connected to the two built-in limit sliding blocks 11. The two support rods 13 are symmetrical and pass through the top and bottom of the support sleeve 10. The supporting buffer spring 12 arranged in the support mechanism uses its own rebound reset property to make the two built-in limit sliding blocks 11 and the connected support rods 13 play a reverse direction supporting force on the transverse rocker arm 2 and the support link 4 and the support link 4 and the middle hinge shaft 5, thereby performing a supporting role.

[0031] The end of the support rod 13 is connected to a supporting abutment 14, and the support rod 13 is connected to the transverse rocker arm 2 and the support link 4 respectively through the supporting abutment 14. While providing support, it also effectively buffers the pressure exerted on the support link 4 and the middle hinge shaft 5, thereby improving the structural stability of the transverse rocker arm 2, the support link 4 and the middle hinge shaft 5. The structure of the supporting abutment 14 is a trapezoidal stable structure.

[0032] When the embodiment of the present application is in use: the staircase of the present invention adopts a foldable design. When folded, it can be attached to the front side of the two guide rail brackets 1. Later, the guide rail bracket 1 can be placed against the wall as a whole. When taken out, the sliding part 7 can slide along the guide rail bracket 1 to limit the position and then cooperate with the active connection of the middle hinge shaft 5 and the shaft connection part 6 to rotate 90 degrees, so that the horizontal swing arm 2, the longitudinal swing arm 3 and the supporting link 4 are fully unfolded and placed at the designated position through the guide rail bracket 1 for use. The supporting buffer spring 12 set in the supporting mechanism uses its own rebound reset property to make the two built-in limit sliding blocks 1 1 and the connected support rod 13 provide reverse support force between the lateral swing arm 2 and the support link 4, as well as between the support link 4 and the middle hinge shaft 5. While providing support, it also effectively buffers the pressure exerted on the support link 4 and the middle hinge shaft 5, thereby improving the structural stability of the lateral swing arm 2, the support link 4 and the middle hinge shaft 5. The structure of the supporting abutment portion 14 is a trapezoidal stable structure. By using the fixed connector 8 and the locking sleeve 9 in conjunction with each other, the axial connection portion 6 and the connected accessories can be conveniently disassembled as a whole, and the folding staircase body can be separated from the two guide rail brackets 1, which is convenient for carrying and transporting.

Claims

1. A folding staircase support structure, characterized in that: The invention comprises a guide rail bracket (1), a transverse rocker (2), a longitudinal rocker (3) and a central hinge shaft (5), wherein two guide rail brackets (1) are provided, and each of the two guide rail brackets (1) is provided with an axial connection portion (6), and the two axial connection portions (6) are movably connected to the two ends of the transverse rocker (2), and the bottoms of the two ends of the transverse rocker (2) are connected to the longitudinal rocker (3), and the two longitudinal rockers (3) are connected via a supporting connecting rod (4), and the middle of the longitudinal rocker (3) is movably connected to the central hinge shaft (5).

2. The foldable staircase support structure according to claim 1, characterized in that: Support sleeves (10) are provided between the transverse swing arm (2) and the supporting connecting rod (4), and between the supporting connecting rod (4) and the middle hinge shaft (5).

3. The foldable staircase support structure according to claim 2, characterized in that: Both ends of the middle hinge shaft (5) are sleeved with adaptive connection sleeves (15), and the adaptive connection sleeves (15) are connected to the supporting abutment portion (14).

4. The foldable staircase support structure according to claim 1, characterized in that: The rear side of the axial connection portion (6) is connected to a sliding portion (7), and the sliding portion (7) is slidably arranged inside the guide rail bracket (1).

5. The foldable staircase support structure according to claim 4, characterized in that: The interior of the sliding part (7) is connected with a fixed connecting piece (8), and the exterior of the sliding part (7) is provided with a locking sleeve (9).

6. The foldable staircase support structure according to claim 5, characterized in that: One end of the fixed connection member (8) is provided with a sliding portion (7) and an axial connection portion (6) and is connected to the locking sleeve (9).

7. The foldable staircase support structure according to claim 2, characterized in that: Two built-in limiting sliding blocks (11) are symmetrically arranged inside the support sleeve (10), and the two built-in limiting sliding blocks (11) are connected to each other through a supporting buffer spring (12). The two built-in limiting sliding blocks (11) are both connected to a support rod (13), and the two support rods (13) are symmetrical and pass through the top and bottom of the support sleeve (10).

8. The foldable staircase support structure according to claim 7, characterized in that: The end of the support rod (13) is connected to a supporting abutment portion (14), and the support rod (13) is respectively connected to the transverse swing rod (2) and the supporting connecting rod (4) through the supporting abutment portion (14).

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