Drawing folding climbing ladder

Abstract

A drawing folding climbing ladder relates to a ladder structure and comprises a ladder main board, the ladder main board comprises a fixing portion and a folding portion which are located on the same plane, the fixing portion is provided with an embedding opening matched with the folding portion in appearance, the fixing portion is connected with the folding portion through a first rotating connecting structure, and the first rotating connecting structure is connected with the folding portion through a second rotating connecting structure. The folding part comprises a pedal part and a supporting leg part, the pedal part and the supporting leg part are connected through a second rotary connecting structure, and when the ladder stand is in a folded state, the folding part and the fixing part are located on the same plane, and the folding part is embedded in the embedding opening, so that no extra space is occupied; the folding part can be completely stored in the wall body and cannot be damaged by collision, and the problems that in the prior art, the folding ladder stand is still located on the outer side of the wall surface after being folded, the space is occupied, and the folding ladder stand is prone to being damaged by collision are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ladder structure, especially to a pullable folding climbing ladder. BACKGROUND

[0002] In order to save space, designers often design the ladder into a foldable structure, which is folded when not needed, thereby avoiding occupying space. However, in the prior art, after the ladder is folded, it is only reduced in occupying space, but still exposed outside the wall or support, which is easy to be collided and also occupies a certain space.

[0003] For example, a "folding roof ladder" disclosed in Chinese patent document with the publication number CN205577836U is installed on a wall and comprises a fixed ladder and a folding ladder. The bottom end of the fixed ladder is hingedly connected to the top end of the folding ladder. The inside of the fixed ladder is provided with a support leg which is fixed to the wall. The inside of the folding ladder is provided with a support leg on which a rubber pad is installed. The bottom end of the fixed ladder and the top end of the folding ladder are both provided with rubber pads. The sides of the fixed ladder and the folding ladder are both provided with lock seats, which are both provided with lock holes. The lock seats of the fixed ladder and the folding ladder can be matched with each other. The deficiency of this patent is that the ladder is still located outside the wall after being folded, which occupies a certain space and is easy to be damaged by collision. SUMMARY

[0004] The utility model is to overcome the problem that the folding ladder is still located outside the wall or cabinet after being folded in the prior art, which occupies space and is easy to be damaged by collision. The pullable folding climbing ladder can be completely stored in the wall or cabinet, completely occupies no space outside the wall or cabinet, and will not be damaged by collision.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model relates to a pullable folding climbing ladder, which comprises a ladder main plate. The ladder main plate comprises a fixed part and a folding part located on the same plane. The fixed part is provided with an embedded port which is matched with the shape of the folding part. The fixed part and the folding part are connected through a first rotary connection structure. The folding part comprises a stepping plate part and a supporting leg part. The stepping plate part and the supporting leg part are connected through a second rotary connection structure.

[0007] In the application, in the folding state of the ladder, the folding part and the fixed part are located on the same plane, and the folding part is embedded in the embedded port, so that no extra space is occupied. When the ladder main plate is installed in the wall or cabinet, the folding part can be completely stored in the wall or cabinet, and will not be damaged by collision.

[0008] As preferred, the pedal part comprises several pedals, the first rotating connection structure comprises several connecting pieces connecting the pedals and the fixed part, and the second rotating connection structure comprises several connecting pieces connecting the pedals and the leg part.

[0009] As preferred, the pedal part comprises a first pedal and a second pedal, the first rotating connection structure comprises a first connecting piece connecting the first pedal part and a second connecting piece connecting the second pedal part, and the second rotating connection structure comprises a third connecting piece connecting the first pedal part and a fourth connecting piece connecting the second pedal part.

[0010] As preferred, the connecting piece comprises a screw rod and a nut with internal and external teeth, the nut with internal and external teeth is fixedly installed on the pedal, and one end of the screw rod is fixedly installed in the fixed part and the other end is adaptively connected with the nut with internal and external teeth. This structure is used to form the rotating connection.

[0011] As preferred, the ladder main plate is provided with a first installation through hole on one side of the first rotating connection structure and a second installation through hole on one side of the second rotating connection structure. This structure facilitates the installation of the connecting piece.

[0012] As preferred, the ladder main plate is installed in a ladder folding cavity, and the ladder frame comprises a side frame, an upper frame and a lower frame. Through this scheme, the ladder frame can also be stored and pulled out, further avoiding the occupation of the space outside the wall.

[0013] As preferred, the fixed part is fixedly connected with the side frame, the upper frame is provided with a drawer slide rail, the folding cavity is provided with a track plate adaptively connected with the drawer slide rail, and the lower frame is provided with a smooth wheel. Through this structure, the ladder can be pulled on the track, which is more smooth.

[0014] As preferred, the first pedal is a lower pedal, the second pedal is an upper pedal, and the leg part comprises a reinforcing part located above the first pedal in the folded state. Through this structure, the ladder has better strength when unfolded.

[0015] As preferred, the leg part is provided with a first leg and a second leg on the two sides respectively, and the lower end of the first leg and the lower end of the second leg are located at the same height.

[0016] As preferred, the leg part is provided with an anti-collision round corner.

[0017] Therefore, the utility model has the following beneficial effects: (1) can be completely stored in the wall, completely not occupying the space outside the wall surface, and will not be damaged by collision; (2) the unfolding and storage process is convenient and smooth to use; (3) the unfolded structure has good strength. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention in its stored state.

[0019] Figure 2 This is a structural schematic diagram of Embodiment 1 of the present invention in its unfolded state.

[0020] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention in its stored state.

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model in its unfolded state.

[0022] In the diagram: 1. Fixed part; 2. Pedal part; 3. Support leg part; 4. First pedal; 5. Second pedal; 6. First rotating connection structure; 7. Second rotating connection structure; 8. First mounting through hole; 9. Second mounting through hole; 10. First support leg; 11. Second support leg; 12. Anti-collision rounded corner; 13. Side frame; 14. Upper frame; 15. Lower frame; 16. Drawer slide; 17. Track plate; 18. Smooth wheel. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1, as Figures 1-2 As shown, a pull-out folding ladder includes a ladder main board, which is installed in the wall and the outer side of the ladder main board does not protrude from the wall or cabinet, so that the ladder does not occupy any space outside the wall when it is stored.

[0025] The ladder main board includes a fixed part 1 and a folding part located on the same plane. The fixed part 1 and the folding part are two parts cut from the ladder main board. The fixed part 1 has a fitting opening that matches the shape of the folding part. The fixed part 1 and the folding part are connected by a first rotating connection structure 6. The folding part includes a foot pedal part 2 and a support leg part 3. The foot pedal part 2 and the support leg part 3 are two parts cut from the folding part. The foot pedal part 2 and the support leg part 3 are connected by a second rotating connection structure 7. The surface of the ladder main board is sanded to ensure that there are no sharp burrs. The support leg part 3 includes a reinforcing part located above the first foot pedal 4 in the folded state.

[0026] The pedal part 2 includes a plurality of pedals, the first rotating connection structure 6 includes a plurality of connecting parts connecting the pedals and the fixing part 1, and the second rotating connection structure 7 includes a plurality of connecting parts connecting the pedals and the support foot part 3.

[0027] Specifically, in the embodiment, the pedal part 2 comprises two pedals, namely a first pedal 4 and a second pedal 5, among which the first pedal 4 is located at the lower side after unfolding, and the second pedal 5 is located at the upper side, the first rotating connection structure 6 comprises a first connecting piece connecting the first pedal 4 and a second connecting piece connecting the second pedal 5, and the second rotating connection structure 7 comprises a third connecting piece connecting the first pedal 4 and a fourth connecting piece connecting the second pedal 5.

[0028] Specifically, the connecting piece comprises a screw rod and an inner and outer toothed nut, the inner and outer toothed nut is fixedly installed on the pedal, one end of the screw rod is fixedly installed in the fixed part 1 or the leg part 3, and the other end is adaptively connected with the inner and outer toothed nut. Figure 1 As shown, the upper part and the lower part of the pedal are each provided with two screw holes. The two screw holes in the upper part are coaxially arranged at the same height, and the two screw holes in the lower part are coaxially arranged at the same height. The inner and outer toothed nut is installed in the screw hole, and the two inner and outer toothed nuts in the lower part of the pedal constitute the first rotating connection structure 6, and the two inner and outer toothed nuts in the upper part of the pedal constitute the second rotating connection structure 7.

[0029] The ladder main plate is provided with a first installation through hole 8 located at one side of the first rotating connection structure 6 and a second installation through hole 9 located at one side of the second rotating connection structure 7. Figure 1 As shown, the first installation through hole 8 is located at the left side of the first rotating connection structure 6, when the inner and outer toothed nut at the left side in the first rotating connection structure 6 needs to be installed, it can be installed from the first installation through hole 8; the second installation through hole 9 is located at the right side of the second rotating connection structure 7, when the inner and outer toothed nut at the right side in the second rotating connection structure 7 needs to be installed, it can be installed from the second installation through hole 9. In addition, the second installation through hole 9 also functions as a turning handle, when the user needs to pull the ladder out of the wall, the hand can be inserted into the second installation through hole 9, and the folding part can be pulled out of the wall. The first installation through hole 8 and the second installation through hole 9 are through in the vertical direction of the ladder main plate, and the size is 80*25, which is convenient for the hand to be inserted.

[0030] The two sides of the leg part 3 are respectively provided with a first leg 10 and a second leg 11, the lower end of the first leg 10 and the lower end of the second leg 11 are located at the same height, and the leg part 3 is provided with an anti-collision round corner 12.

[0031] The fixing part 1 includes a first recess that engages with the first pedal 4 and a second recess that engages with the second pedal 5. A first mounting base is located to the right of the first recess, and this first mounting base engages with the first support leg 10. A second mounting base is located between the first and second recesses. A third mounting base is located to the left of the second recess. A third recess is located to the left of the third mounting base, and this third recess engages with the second support leg 11. Each of the first, second, and third mounting bases has a lead screw through hole for connecting the lead screw.

[0032] When drilling and installation are required on the fixing part 1 and the folding part in this embodiment, they can be unfolded first to leave enough space for the drilling position and the installation connector position. In the unfolded state, there will be no interference between the holes during drilling and assembly.

[0033] In this embodiment, the ladder is completely folded into the wall when in its stowed state, without occupying any external space. When it needs to be unfolded, first insert your hand into the second mounting hole 9, then pull the folding section outwards. During this process, the footrest 2 rotates relative to the fixed part 1 around the first rotating connection structure 6, while the support leg 3 rotates relative to the footrest 2 around the second rotating connection structure 7. The flipping is complete when both the footrest 2 and the support leg 3 have rotated 90° relative to the fixed part 1 and 90° respectively. At this point, the footrest 2 is perpendicular to the fixed part 1 and is horizontal, while the support leg 3 is perpendicular to the footrest 2 and is vertical. The bottom of the support leg 3 is supported by an external support base or the ground.

[0034] Example 2, as Figures 3-4 As shown, a pull-out folding ladder includes a ladder main board and a ladder frame. The ladder main board is installed in the ladder frame, and a folding cavity is provided on the wall or cabinet, in which the ladder frame is installed. The ladder main board is installed in the ladder frame, and the ladder frame is completely stored in the folding cavity, so that the ladder does not occupy any external space when folded.

[0035] The ladder main board includes a fixed part 1 and a folding part located on the same plane. The fixed part 1 and the folding part are two parts cut from the ladder main board. The fixed part 1 has a fitting opening that matches the shape of the folding part. The fixed part 1 and the folding part are connected by a first rotating connection structure 6. The folding part includes a foot pedal part 2 and a support leg part 3. The foot pedal part 2 and the support leg part 3 are two parts cut from the folding part. The foot pedal part 2 and the support leg part 3 are connected by a second rotating connection structure 7. The surface of the ladder main board is sanded to ensure that there are no sharp burrs.

[0036] The pedal part 2 comprises several pedals, the first rotating connection structure 6 comprises several connecting pieces connecting the pedals and the fixed part 1, and the second rotating connection structure 7 comprises several connecting pieces connecting the pedals and the leg part 3.

[0037] Specifically, in the embodiment, the pedal part 2 comprises two pedals, i.e. the first pedal 4 and the second pedal 5, among which the first pedal 4 is located at the lower side and the second pedal 5 is located at the upper side after being unfolded, the first rotating connection structure 6 comprises a first connecting piece connecting the first pedal 4 and a second connecting piece connecting the second pedal 5, and the second rotating connection structure 7 comprises a third connecting piece connecting the first pedal 4 and a fourth connecting piece connecting the second pedal 5.

[0038] Specifically, the connecting piece comprises a screw rod and an inner and outer toothed nut, the inner and outer toothed nut is fixedly installed on the pedal, and one end of the screw rod is fixedly installed in the fixed part 1 or the leg part 3 and the other end is adaptively connected with the inner and outer toothed nut. Figure 3 As shown, the upper part and the lower part of the pedal are respectively provided with two screw holes. The two screw holes in the upper part are coaxially arranged at the same height, and the two screw holes in the lower part are coaxially arranged at the same height. The inner and outer toothed nut is installed in the screw hole, and the two inner and outer toothed nuts in the lower part of the pedal form the first rotating connection structure 6, and the two inner and outer toothed nuts in the upper part of the pedal form the second rotating connection structure 7.

[0039] The ladder main plate is provided with a first installation through hole 8 located at one side of the first rotating connection structure 6 and a second installation through hole 9 located at one side of the second rotating connection structure 7. Specifically, Figure 1 As shown, the first installation through hole 8 is located at the left side of the first rotating connection structure 6, when the inner and outer toothed nut at the left side in the first rotating connection structure 6 needs to be installed, it can be installed from the first installation through hole 8; the second installation through hole 9 is located at the right side of the second rotating connection structure 7, when the inner and outer toothed nut at the right side in the second rotating connection structure 7 needs to be installed, it can be installed from the second installation through hole 9. In addition, the second installation through hole 9 also functions as a turning handle, when the user needs to pull the ladder out of the wall, the hand can be inserted into the second installation through hole 9, and the folding part can be pulled out of the wall. The first installation through hole 8 and the second installation through hole 9 are through in the vertical direction of the ladder main plate, and the size is 80*25, which is convenient for the hand to be inserted.

[0040] The leg part 3 is provided with a first leg 10 and a second leg 11 at both sides, respectively, the lower end of the first leg 10 and the lower end of the second leg 11 are located at the same height, and the leg part 3 is provided with an anti-collision round corner 12.

[0041] The ladder frame comprises a side frame 13, an upper frame 14 and a lower frame 15. The side frame 13 is located on the side of the ladder main plate facing outwardly from the wall, and a handle for pulling out the side frame 13 is arranged on the side frame 13. The fixed part 1 is fixedly connected with the side frame 13. The upper frame 14 is provided with a drawer slide rail 16. The ladder folding cavity is provided with a track plate 17 which is adaptively connected with the drawer slide rail 16. The drawer slide rail 16 is fixedly connected with the side frame 13. When the ladder frame is pulled out, the track plate 17 and the drawer slide rail 16 slide relative to each other. The lower frame 15 is provided with a smooth wheel 18 which can roll in the ladder folding cavity.

[0042] The fixed part 1 comprises a first recess which is mutually embedded with the first step plate 4, and a second recess which is mutually embedded with the second step plate 5. The right side of the first recess is a first mounting seat which is mutually embedded with the first supporting leg 10. The second recess is between the first recess and the second recess. The left side of the second recess is a third mounting seat. The left side of the third mounting seat is a third recess which is mutually embedded with the second supporting leg 11. The first mounting seat, the second mounting seat and the third mounting seat are all provided with a lead screw through hole for connecting the lead screw.

[0043] When the fixed part 1 and the folding part need to be punched and mounted in the embodiment, they can be first unfolded to leave enough space for the punching position and the mounting connecting member position. In the unfolded state, the hole positions will not interfere with the punching and assembly.

[0044] In the storage state of the ladder in the embodiment, the ladder is completely folded in the wall and does not occupy the space outside the wall. When it is needed to be unfolded, the ladder frame is first pulled out of the ladder folding cavity by the handle installed on the side frame 13. In the process of pulling out the ladder frame, the smooth wheel 18 rolls at the bottom of the ladder folding cavity, and the track plate 17 and the drawer slide rail 16 slide relative to each other. After the ladder frame is completely pulled out of the ladder folding cavity, the hand is inserted into the second mounting through hole 9, and then the folding part is pulled outwards from the wall. In the process of pulling out the folding part, the step plate part 2 rotates relative to the fixed part 1 with the first rotary connection structure 6 as the axis, and the supporting leg part 3 rotates relative to the step plate part 2 with the second rotary connection structure 7 as the axis. Until the step plate part 2 rotates 90° relative to the fixed part 1, and the supporting leg part 3 rotates 90° relative to the step plate part 2, the folding is completed. At this time, the step plate part 2 is perpendicular to the fixed part 1 and is in a horizontal state, and the supporting leg part 3 is perpendicular to the step plate part 2 and is in a vertical state. The bottom of the supporting leg part 3 is supported on an external supporting seat or the ground.

Claims

1. A pull-to-fold cat ladder, characterized by, The ladder main plate comprises a fixed part and a folding part in the same plane, the fixed part is provided with a matching port matched with the folding part, the fixed part and the folding part are connected through a first rotating connection structure, the folding part comprises a stepping plate part and a supporting leg part, and the stepping plate part and the supporting leg part are connected through a second rotating connection structure.

2. The pull-to-fold cat ladder of claim 1, wherein, The stepping plate part comprises a plurality of stepping plates, the first rotating connection structure comprises a plurality of connecting pieces connecting the stepping plates and the fixed part, and the second rotating connection structure comprises a plurality of connecting pieces connecting the stepping plates and the supporting leg part.

3. The pull-to-fold cat ladder of claim 2, wherein, The stepping plate part comprises a first stepping plate and a second stepping plate, the first rotating connection structure comprises a first connecting piece connecting the first stepping plate part and a second connecting piece connecting the second stepping plate part, and the second rotating connection structure comprises a third connecting piece connecting the first stepping plate part and a fourth connecting piece connecting the second stepping plate part.

4. The pull-to-fold cat ladder of claim 2, wherein, The connecting piece comprises a screw rod and an inner and outer toothed nut, the inner and outer toothed nut is fixedly installed on the stepping plate, one end of the screw rod is fixedly installed in the fixed part or the supporting leg part, and the other end is adaptively connected with the inner and outer toothed nut.

5. The pull-to-fold vertical climbing ladder of claim 2, wherein, The ladder main plate is provided with a first installation through hole on one side of the first rotating connection structure and a second installation through hole on one side of the second rotating connection structure.

6. The pull-to-fold cat ladder of claim 1, wherein, The ladder main plate is installed in a ladder folding cavity, and the ladder folding cavity comprises a side frame, an upper frame and a lower frame.

7. A draw-fold climbing ladder according to claim 6, wherein, The fixed part is fixedly connected with the side frame, the upper frame is provided with a drawer slide rail, the folding cavity is provided with a track plate adaptively connected with the drawer slide rail, and the lower frame is provided with a smooth wheel.

8. The pull-to-fold cat ladder of claim 3, wherein, The first stepping plate is a lower stepping plate, the second stepping plate is an upper stepping plate, and the supporting leg part comprises a reinforcing part located above the first stepping plate in the folding state.

9. The pull-to-fold cat ladder according to any one of claims 1-8, wherein, The supporting leg part is provided with a first supporting leg and a second supporting leg on both sides, and the lower end of the first supporting leg and the lower end of the second supporting leg are located at the same height.

10. The pull-to-fold cat ladder according to any one of claims 1-8, wherein, The supporting leg part is provided with an anti-collision round corner.

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