A flip ladder

Abstract

The utility model discloses a kind of turnover ladders including: first ladder body, second ladder body and two hinged components, mutually spaced, hinged component includes first connector, second connector and first clamping part, first connector is connected to first ladder body, second connector is connected to second ladder body, and with first connector rotation connection, for driving second ladder body overturn or fold relative to first ladder body, first clamping part is connected to first connector, and can be clamped with second connector, for limiting second ladder body rotation relative to first ladder body. The utility model can effectively solve the problem that folding ladder is prone to shaking after being unfolded relative to ladder due to lack of locking pin structure, thereby leading to safety hazard when climbing.

Description

Technical Field

[0001] This utility model relates to the field of folding ladder technology, specifically to a flip ladder. Background Technology

[0002] To save space, folding ladders are usually installed on the outer walls of the carriages to facilitate climbing.

[0003] For example, Chinese utility model patent CN209494514U, entitled "Folding Ladder for Emergency Vehicles," includes a ladder with several crank arms mounted on its back. One end of each crank arm is hinged to the ladder, and the other end is hinged to the emergency vehicle. A stop plate is provided at the hinge point. It also includes a folding ladder with a hinge plate at the lower end. The upper end of the folding ladder is mounted inside the hinge plate via a pin, allowing the folding ladder to rotate around the pin. A locking device is also included, with the locking device positioned less than the length of the folding ladder from the hinge plate. The locking device includes a lock body and a latch. The lock body is longitudinally mounted on the side of the ladder, and the latch moves horizontally relative to the lock body, preventing the folding ladder from rotating downwards. When in use, the ladder is pulled outwards, and the folding ladder at the bottom flips down, allowing workers to easily climb up and down. The device is compact, lightweight, flexible, and reliably fixed.

[0004] After the folding ladder unfolds by rotating around a pivot, there is no locking pin or other structure to connect the folding ladder and the ladder to form a whole. This makes the folding ladder prone to swaying relative to the ladder when the user is climbing, thus posing a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a flip-up ladder to solve the technical problem that the lack of a locking pin structure in the prior art makes the flip-up ladder prone to shaking after being unfolded relative to the ladder, thus causing safety hazards when climbing.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a flip-up ladder, comprising: First trapezoid; The second ladder; and Two hinge components are spaced apart from each other. Each hinge component includes a first connecting body, a second connecting body, and a first snap-fit ​​member. The first connecting body is connected to the first ladder body, and the second connecting body is connected to the second ladder body and is rotatably connected to the first connecting body. This is used to drive the second ladder body to flip or fold relative to the first ladder body. The first snap-fit ​​member is connected to the first connecting body and can snap-fit ​​with the second connecting body to restrict the rotation of the second ladder body relative to the first ladder body.

[0007] In some embodiments, the first connector has a first snap-fit ​​hole, and the second connector has a second snap-fit ​​hole opposite to the first connector. The first snap-fit ​​member includes a snap-fit ​​rod, which can be inserted into the first snap-fit ​​hole and the second snap-fit ​​hole in sequence.

[0008] In some embodiments, the first latching member further includes a stop block connected to the latching rod, and the cross-sectional area of ​​the stop block is larger than the cross-sectional areas of the first latching hole and the second latching hole.

[0009] In some embodiments, the hinge assembly further includes a second snap-fit ​​member disposed on the rotation path of the first snap-fit ​​hole and connected to the second connector, and the second snap-fit ​​member is capable of snapping into the first snap-fit ​​hole.

[0010] In some embodiments, the second connector has a receiving groove relative to the first snap-fit ​​hole, and the second snap-fit ​​member includes a snap-fit ​​block and an elastic part. The snap-fit ​​block is built into the receiving groove and is disposed relative to the first snap-fit ​​hole. One end of the elastic part is connected to the snap-fit ​​block and the other end is connected to the inside of the receiving groove, for pushing the snap-fit ​​block to snap into the first snap-fit ​​hole.

[0011] In some embodiments, the snap-fit ​​block is spherical.

[0012] In some embodiments, the flip ladder further includes a connecting component connected to the first ladder body and configured to connect to the vehicle.

[0013] In some embodiments, the connecting assembly includes a first hinge seat, a first connecting seat, a second hinge seat, and a second connecting seat. The first hinge seat is connected to the vehicle. One end of the first connecting seat is rotatably connected to the first ladder and the other end is rotatably connected to the first hinge seat. The second hinge seat is spaced apart from the first hinge seat and connected to the vehicle. One end of the second connecting seat is rotatably connected to the first ladder and the other end is rotatably connected to the second hinge seat.

[0014] In some embodiments, the connecting assembly further includes a third connecting seat, a first connecting rod, and a second connecting rod. The third connecting seat is spaced apart from the connection points of the second hinge seat and the second connecting seat, and is connected to the second hinge seat. One end of the first connecting rod is rotatably connected to the third connecting seat. One end of the second connecting rod is rotatably connected to the other end of the first connecting rod, and the other end is rotatably connected to the second connecting seat.

[0015] In some embodiments, the flip ladder further includes two wedge-shaped buffer blocks, which are disposed opposite to the first ladder body and are both connected to the second ladder body.

[0016] Compared with the prior art, the beneficial effects of the flip ladder provided by this utility model include: a first connecting body and a second connecting body are provided between the first ladder body and the second ladder body. The first connecting body is connected to the first ladder body, and the second connecting body is connected to the second ladder body and rotatably connected to the first ladder body. A first locking member is connected to the first ladder body and can lock with the second connecting body to restrict the rotation of the second ladder body relative to the first ladder body. Compared with the prior art, by providing a first locking member at the rotatable connection between the first ladder body and the second ladder body, when the first locking member locks with the second connecting body, the second ladder body cannot rotate relative to the first ladder body. This prevents the second ladder body from continuing to rotate relative to the first ladder body after it is unfolded, ensuring that the second ladder body will not sway relative to the first ladder body when the user climbs the unfolded ladder. This provides high stability and safety, and solves the technical problem in the prior art where the lack of a locking pin structure causes the flip ladder to sway easily after unfolding, resulting in safety hazards during climbing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of a flip ladder provided in one embodiment of the present invention; Figure 2 This is a three-dimensional view of a flip ladder from another perspective, provided in one embodiment of this utility model; Figure 3 This is a cross-sectional view of a hinge assembly provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a connection component provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of a flip ladder connected to a vehicle according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: First ladder body 100; Second ladder body 200; Hinge assembly 300; First connector 310; Second connector 320; First snap-fit ​​330; Snap-fit ​​rod 331; Stop 332; Second snap-fit ​​340; Snap-fit ​​block 341; Elastic part 342; Connecting assembly 400; First hinge seat 410; First connecting seat 420; Second hinge seat 430; Second connecting seat 440; Third connecting seat 450; First connecting rod 460; Second connecting rod 470; Wedge-shaped buffer block 500; Vehicle 600. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] To address the technical problem of wobbling in unfolded folding ladders due to the lack of locking pins, which poses a safety hazard during climbing, this invention provides a folding ladder. By installing a first locking member 330 at the rotational connection between the first ladder body 100 and the second ladder body 200, when the first locking member 330 engages with the second connecting body 320, the second ladder body 200 cannot rotate relative to the first ladder body 100. This prevents the second ladder body 200 from continuing to rotate relative to the first ladder body 100 after unfolding, ensuring that the second ladder body 200 will not wobble relative to the first ladder body 100 when climbing the unfolded ladder, resulting in high stability and safety.

[0021] Please see Figure 1 , Figure 2 , Figures 1 to 3 This is a schematic diagram of the structure of a flip ladder according to an embodiment of the present invention. The flip ladder includes a first ladder body 100, a second ladder body 200, and two hinge components 300, which are spaced apart from each other. The hinge component 300 includes a first connecting body 310, a second connecting body 320, and a first snap-fit ​​member 330. The first connecting body 310 is connected to the first ladder body 100, and the second connecting body 320 is connected to the second ladder body 200 and is rotatably connected to the first connecting body 310, so as to drive the second ladder body 200 to flip or fold relative to the first ladder body 100. The first snap-fit ​​member 330 is connected to the first connecting body 310 and can snap-fit ​​with the second connecting body 320, so as to restrict the rotation of the second ladder body 200 relative to the first ladder body 100.

[0022] Compared to existing technologies, this device features a first locking member 330 at the rotational connection between the first ladder body 100 and the second ladder body 200. When the first locking member 330 engages with the second connecting body 320, the second ladder body 200 cannot rotate relative to the first ladder body 100. This prevents the second ladder body 200 from rotating relative to the first ladder body 100 after it has been unfolded. Consequently, the second ladder body 200 will not sway relative to the first ladder body 100 when the user climbs the unfolded ladder, resulting in high stability and safety. This invention solves the technical problem in existing technologies where the lack of a locking pin structure causes the folding ladder to sway after unfolding relative to the ladder, leading to safety hazards during climbing.

[0023] Furthermore, both the first ladder 100 and the second ladder 200 are common and readily available alloy ladders on the market, which have the advantages of high strength and light weight. The length of the second ladder 200 is less than the length of the first ladder 100, so that the second ladder 200 can be stored on the first ladder 100 after being flipped relative to the first ladder 100. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0024] Furthermore, the second connector 320 is provided with a rotating groove, and the first connector 310 extends into the rotating groove. The second connector 320 is rotatably connected to the first connector 310 through a rotating shaft. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0025] Furthermore, in this embodiment, two hinge components 300 are symmetrically distributed on the two legs of the ladder to improve the stability of the flipping or folding structure, which will not be elaborated here.

[0026] In this embodiment, as Figure 3 As shown, the first connector 310 has a first snap-fit ​​hole, and the second connector 320 has a second snap-fit ​​hole relative to the first connector 310. The first snap-fit ​​member 330 includes a snap-fit ​​rod 331, which can be inserted into the first snap-fit ​​hole and the second snap-fit ​​hole in sequence.

[0027] By having the locking rod 331 pass through the first locking hole and the second locking hole in sequence, the relative rotation between the first connector 310 and the second connector 320 can be restricted.

[0028] Furthermore, in some embodiments, such as Figure 3 As shown, a second snap-fit ​​hole is provided on both side walls of the rotating groove. The snap-fit ​​rod 331 passes through the second snap-fit ​​hole, the first snap-fit ​​hole and the second snap-fit ​​hole in sequence to achieve stable positioning of the second connecting body 320.

[0029] In one embodiment, such as Figure 3 As shown, the first snap-fit ​​component 330 also includes a stop block 332, which is connected to the snap-fit ​​rod 331, and the cross-sectional area of ​​the stop block 332 is larger than the cross-sectional areas of the first snap-fit ​​hole and the second snap-fit ​​hole.

[0030] To prevent the locking rod 331 from continuing to slide relative to the first locking hole and the second locking hole during the rotation and climbing process, the cross-sectional area of ​​the stop block 332 is larger than the cross-sectional area of ​​the first locking hole and the second locking hole, which can improve the stability of the connection.

[0031] In some embodiments, the locking rod 331 and the stop block 332 are integral structures, such as bolts or pins, which will not be described in detail here.

[0032] In this embodiment, as Figure 3 As shown, the hinge assembly 300 also includes a second snap-fit ​​member 340, which is disposed on the rotation path of the first snap-fit ​​hole and connected to the second connector 320, and the second snap-fit ​​member 340 can snap into the first snap-fit ​​hole.

[0033] A second snap-fit ​​member 340 is also provided on the second connector 320. The second snap-fit ​​member 340 can also snap into the first snap-fit ​​hole, so that the second ladder 200 can be accidentally dropped after being flipped or folded relative to the first ladder 100.

[0034] In addition, in some embodiments, when the second ladder body 200 is in a stowed or folded state, the first snap-fit ​​member 330 can be inserted into the first snap-fit ​​hole and the second snap-fit ​​hole. The cooperation of the first snap-fit ​​member 330 and the second snap-fit ​​member 340 can improve the stability of the second ladder body 200 in the folded or stowed state, thereby improving safety. This will not be elaborated further here.

[0035] In one embodiment, such as Figure 3 As shown, the second connector 320 has a receiving groove relative to the first snap-fit ​​hole. The second snap-fit ​​member 340 includes a snap-fit ​​block 341 and an elastic part 342. The snap-fit ​​block 341 is built into the receiving groove and is disposed relative to the first snap-fit ​​hole. One end of the elastic part 342 is connected to the snap-fit ​​block 341 and the other end is connected to the inside of the receiving groove, which is used to push the snap-fit ​​block 341 to snap-fit ​​with the first snap-fit ​​hole.

[0036] By rotating the second connector 320 relative to the first connector 310, when the receiving groove is opposite to the first snap-fit ​​hole, the snap-fit ​​block 341 pops out from the receiving groove and snaps into the first snap-fit ​​hole under the elastic restoring force of the elastic part 342.

[0037] Furthermore, the elastic part 342 here is a spring, spring sheet and elastic block that are common and easy to purchase on the market. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0038] In one embodiment, such as Figure 3 As shown, the snap-fit ​​block 341 is spherical.

[0039] By setting a spherical snap-fit ​​block 341, when the user releases the snap-fit ​​structure of the first snap-fit ​​member 330 and pulls the second ladder body 200 with a certain amount of pulling force, the snap-fit ​​block 341 can be squeezed into the receiving groove, thereby forcing the snap-fit ​​block 341 to contact the snap-fit ​​structure with the first snap-fit ​​hole, thus making it easy to flip or unfold the second ladder body 200.

[0040] In some embodiments, the snap-fit ​​block 341 is a steel ball or iron ball that is commonly available and readily procurable in the market. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0041] In this embodiment, as Figure 1 , Figure 2 and Figure 4 , Figure 5As shown, the flip ladder also includes a connecting component 400, which is connected to the first ladder body 100 and configured in the connecting vehicle 600.

[0042] The connecting component 400 is used to connect the first ladder 100 and the vehicle 600, so that when the ladder is unfolded, there is a certain gap between it and the outer wall of the vehicle 600, which makes it easier for users to climb and improves safety. At the same time, when the ladder is stored or folded, the gap between the vehicle 600 and the outer wall is reduced, reducing the usable space of the ladder.

[0043] Furthermore, the ladder here can also be connected to the outer wall of the shell or the outer wall of the tank, and is not limited to connecting vehicle 600, which will not be elaborated here.

[0044] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the connecting assembly 400 includes a first hinge seat 410, a first connecting seat 420, a second hinge seat 430, and a second connecting seat 440. The first hinge seat 410 is connected to the vehicle 600. One end of the first connecting seat 420 is rotatably connected to the first ladder 100, and the other end is rotatably connected to the first hinge seat 410. The second hinge seat 430 is spaced apart from the first hinge seat 410 and connected to the vehicle 600. One end of the second connecting seat 440 is rotatably connected to the first ladder 100, and the other end is rotatably connected to the second hinge seat 430.

[0045] The first hinge seat 410, the first connecting seat 420, the second hinge seat 430 and the second connecting seat 440 are respectively connected to the first ladder body 100 and the vehicle 600, thereby forming a four-bar linkage mechanism similar to a parallelogram, which allows the ladder body to translate and unfold relative to the vehicle 600 within a certain range.

[0046] Furthermore, since there may be a height difference on the outer wall plane of the vehicle 600, the specific lengths of the first hinge seat 410, the first connecting seat 420, the second hinge seat 430 and the second connecting seat 440 can be adaptively adjusted according to the specific usage conditions, which will not be elaborated here.

[0047] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the connecting assembly 400 also includes a third connecting seat 450, a first connecting rod 460, and a second connecting rod 470. The third connecting seat 450 is spaced apart from the connection points of the second hinge seat 430 and the second connecting seat 440, and is connected to the second hinge seat 430. One end of the first connecting rod 460 is rotatably connected to the third connecting seat 450. One end of the second connecting rod 470 is rotatably connected to the other end of the first connecting rod 460, and the other end is rotatably connected to the second connecting seat 440.

[0048] The first ladder body 100 and the vehicle 600 are also connected by a reinforced linkage structure consisting of a third connecting seat 450, a first connecting rod 460, and a second connecting rod 470, thereby improving the connection stability between the linkage structures, which will not be elaborated here.

[0049] Furthermore, the connection points of the first hinge seat 410, the first connecting seat 420, the second hinge seat 430 and the second connecting seat 440, and the connection points of the third connecting seat 450, the first connecting rod 460 and the second connecting rod 470 are all connected by rotating shafts to achieve rotational connection. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0050] In this embodiment, as Figure 1 , Figure 2 As shown, the flip ladder also includes two wedge-shaped buffer blocks 500, which are positioned relative to the first ladder body 100 and are both connected to the second ladder body 200.

[0051] A wedge-shaped buffer block 500 is disposed between the first ladder 100 and the second ladder 200 to reduce the collision between the two, thereby improving safety.

[0052] Furthermore, the wedge-shaped buffer block 500 here can limit the rotation angle of the second ladder 200 relative to the first ladder 100, so that the second ladder 200 is stably connected to the first ladder 100. The wedge-shaped buffer block 500 here is a common and readily available rubber or plastic material on the market. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0053] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail below: A first connecting body 310 and a second connecting body 320 are provided between the first ladder body 100 and the second ladder body 200. The first connecting body 310 is connected to the first ladder body 100, and the second connecting body 320 is connected to the second ladder body 200 and is rotatably connected to the first ladder body 100. A first locking member 330 is connected to the first ladder body 100 and can lock with the second connecting body 320 to restrict the rotation of the second ladder body 200 relative to the first ladder body 100. Compared with the prior art, by providing the first locking member 330 at the rotatable connection between the first ladder body 100 and the second ladder body 200, when the first locking member 330 locks with the second connecting body 320, the second ladder body 200 cannot rotate relative to the first ladder body 100. This prevents the second ladder body 200 from continuing to rotate relative to the first ladder body 100 after it is unfolded, ensuring that the second ladder body 200 will not sway relative to the first ladder body 100 when the user climbs the unfolded ladder, resulting in high stability and safety.

[0054] In the specific working process of this utility model, when in use, the user first drives the second ladder 200 to rotate relative to the first ladder 100, and then the wedge-shaped buffer block 500 abuts against the second ladder 200. At this time, the ladder is fully unfolded, and the first locking hole and the second locking hole are opposite and connected. Then, the user inserts the locking rod 331 into the second locking hole and the first locking hole in sequence. The second ladder 200 can no longer rotate relative to the first ladder 100. Then, when the climbing is completed and the second ladder 200 needs to be flipped and folded, the user needs to pull the locking rod 331 out from the first locking hole and the second locking hole. Finally, push the second ladder 200 to rotate relative to the first ladder 100. When the flipping is completed, the receiving groove is exactly opposite and connected to the first locking hole. Under the action of the elastic part 342, the locking block 341 engages with the first locking hole. The user inserts the locking rod 331 into the second locking hole and the first locking hole in sequence again to complete the folding or storage.

[0055] Furthermore, when it is necessary to unfold, the user needs to pull the locking rod 331 out from the first locking hole and the second locking hole. When the second ladder 200 is pulled with a certain amount of force, the locking block 341 can be squeezed into the receiving groove, thereby forcing the locking block 341 to contact the locking structure with the first locking hole, so as to conveniently flip or unfold the second ladder 200.

[0056] This device, through the aforementioned structure, can solve the technical problem in the prior art where the lack of a locking pin structure causes the folding ladder to sway after unfolding relative to the climbing ladder, thus posing a safety hazard during climbing.

[0057] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A flip-up ladder, characterized in that, include: First trapezoid; Second trapezoid; as well as Two hinge components are spaced apart from each other. Each hinge component includes a first connecting body, a second connecting body, and a first snap-fit ​​member. The first connecting body is connected to the first ladder body, and the second connecting body is connected to the second ladder body and is rotatably connected to the first connecting body. This is used to drive the second ladder body to flip or fold relative to the first ladder body. The first snap-fit ​​member is connected to the first connecting body and can snap-fit ​​with the second connecting body to restrict the rotation of the second ladder body relative to the first ladder body.

2. The flip-up ladder according to claim 1, characterized in that, The first connector has a first snap-fit ​​hole, and the second connector has a second snap-fit ​​hole opposite to the first connector. The first snap-fit ​​component includes a snap-fit ​​rod, which can be inserted into the first snap-fit ​​hole and the second snap-fit ​​hole in sequence.

3. The flip-up ladder according to claim 2, characterized in that, The first snap-fit ​​component further includes a stop block connected to the snap-fit ​​rod, and the cross-sectional area of ​​the stop block is larger than the cross-sectional areas of the first snap-fit ​​hole and the second snap-fit ​​hole.

4. The flip-up ladder according to claim 2, characterized in that, The hinge assembly further includes a second snap-fit ​​member, which is disposed on the rotation path of the first snap-fit ​​hole and connected to the second connecting body, and the second snap-fit ​​member can snap into the first snap-fit ​​hole.

5. The flip-up ladder according to claim 4, characterized in that, The second connector has a receiving groove relative to the first snap-fit ​​hole. The second snap-fit ​​member includes a snap-fit ​​block and an elastic part. The snap-fit ​​block is built into the receiving groove and is disposed relative to the first snap-fit ​​hole. One end of the elastic part is connected to the snap-fit ​​block and the other end is connected to the inside of the receiving groove, which is used to push the snap-fit ​​block to snap into the first snap-fit ​​hole.

6. The flip-up ladder according to claim 5, characterized in that, The snap-fit ​​block is spherical.

7. The flip-up ladder according to claim 1, characterized in that, The flip ladder also includes a connecting component connected to the first ladder body and configured to connect the vehicle.

8. The flip-up ladder according to claim 7, characterized in that, The connecting assembly includes a first hinge seat, a first connecting seat, a second hinge seat, and a second connecting seat. The first hinge seat is connected to the vehicle. One end of the first connecting seat is rotatably connected to the first ladder and the other end is rotatably connected to the first hinge seat. The second hinge seat is spaced apart from the first hinge seat and connected to the vehicle. One end of the second connecting seat is rotatably connected to the first ladder and the other end is rotatably connected to the second hinge seat.

9. The flip-up ladder according to claim 8, characterized in that, The connecting assembly further includes a third connecting seat, a first connecting rod, and a second connecting rod. The third connecting seat is spaced apart from the connection points of the second hinge seat and the second connecting seat, and is connected to the second hinge seat. One end of the first connecting rod is rotatably connected to the third connecting seat. One end of the second connecting rod is rotatably connected to the other end of the first connecting rod, and the other end is rotatably connected to the second connecting seat.

10. The flip-up ladder according to claim 1, characterized in that, The flip ladder also includes two wedge-shaped buffer blocks, which are positioned relative to the first ladder body and are both connected to the second ladder body.

Images