Folding ladder with safety buckles

Abstract

A folding ladder with a safety buckle comprises a folding ladder body and a buckle structure body, and the folding ladder body comprises a ladder body and a plurality of pedal structures. And a plurality of rear cross beams are arranged on the ladder body. The pedal structure is composed of a pedal body and an annular reinforcing plate. A first through groove is formed in the front side of the annular reinforcing plate located on the top. The buckle structure body comprises a fixing seat and a mounting block. An insertion hole is formed in the left side of the fixing base. A cavity is formed in the mounting block, a second through groove is formed in the mounting block, and a spring insertion rod structure is arranged in the cavity. The spring inserting rod structure comprises an inserting rod body, a handle, a spring body, a first clamping ring and a shifting block. The pedal structure at the top and the rear cross beam at the top can be locked through the buckle structure body, the stability of the pedal at the top is improved, upwarp of the pedal is avoided, and the unlocking process of the buckle structure body is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of ladders, specifically a folding ladder with a safety buckle. Background Technology

[0002] A folding ladder consists of a ladder body and several treads that are rotatably connected to the ladder body. To reduce overall weight, the treads are generally not very thick. Therefore, the tread structure typically consists of a relatively thin tread body and a ring-shaped reinforcing plate integrally formed at the bottom of the tread body. Examples include the YBL002 household folding indoor A-frame multi-functional ladder, the ysf-7093FB household multi-functional folding A-frame ladder, and the JBS-JYT-924-GY household folding A-frame ladder, etc.

[0003] Chinese Patent CN206468283U discloses a novel safety buckle folding ladder, comprising a frame, steps, safety buckles, front and rear pull strips, upper and lower pull strips, a rear crossbeam, and handrails. The handrails are fixed to the frame, multiple steps are installed on one side of the frame, and a rear crossbeam is fixed to the other side. The steps are connected as a single unit by the upper and lower pull strips. A safety buckle is installed on the top step, and the top step is secured to the top rear crossbeam via the safety buckle. Front and rear pull strips connect the second-level steps to the second rear crossbeam. This utility model is robust and sturdy, stable in use, safer, more practical, and easy to promote and use.

[0004] Meanwhile, this utility model also proposes a technical solution to solve the problem that the top pedal structure is prone to tilting upwards under force, has poor stability, high risk factor, and poses safety hazards. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a folding ladder with a safety buckle, which aims to achieve the technical effect of quickly, conveniently and firmly connecting the top step structure and the top rear crossbeam, improving the stability of the top step structure and preventing it from tilting upwards. At the same time, the process of separating the top step structure and the top rear crossbeam is also simple and convenient.

[0006] A folding ladder with a safety buckle includes a folding ladder body and a buckle structure body. The folding ladder body includes a ladder frame and several step structures. Several rear crossbeams are provided on the ladder frame. Each step structure consists of a step body and an annular reinforcing plate. A first through groove is formed on the annular reinforcing plate at the top. The buckle structure body includes a fixing seat and a mounting block. The fixing seat is fixed to the top of the rear crossbeams at the top and has an insertion hole on its left side. The mounting block is fixed to the bottom of the top step body and corresponds to the left side of the fixing seat. A cavity is formed inside the mounting block. A second through groove is formed on the mounting block, corresponding to the first through groove and communicating with the cavity. A spring insert structure is provided inside the cavity. The spring-loaded insert structure includes an insert body, a handle, and a spring body. The insert body is located in a cavity, and both ends of the insert body slide out of the cavity. The right end of the insert body is inserted into the insertion hole in a mating connection manner. A first retaining ring is fixedly sleeved on the outside of the insert body and located in the cavity. The spring is sleeved on the outside of the insert body and fixedly connected between the left side wall of the first retaining ring and the cavity wall. The middle position of the handle is rotatably connected to the mounting block through a pin. One end of the handle is located in the cavity and is fixed with a lever that fits against the right side wall of the first retaining ring. The other end of the handle passes through the cavity through a second through groove and extends through the first through groove to the outside of the annular reinforcing plate at the top.

[0007] By adopting the above technical solution, when the folding ladder body needs to be folded, push the end of the handle that protrudes from the annular reinforcing plate to the right. Since the middle position of the handle is rotatably connected to the mounting block via a pin, the handle can rotate in the cavity, the first through slot, and the second through slot, thereby causing the end of the handle located in the cavity to move to the left. The handle drives the lever to press the first retaining ring, causing the first retaining ring to move to the left. The first retaining ring presses the spring, causing the spring to deform and generate a rightward rebound force. At the same time, the first retaining ring causes the insert rod body to slide to the left until the right end of the insert rod body is pulled out of the insertion hole. At this time, the buckle structure body is released, the top pedal structure is no longer fixed to the top rear crossbeam, and the folding ladder body can be folded smoothly. Similarly, when the folding ladder needs to be unfolded, first push the handle. After the folding ladder body is fully unfolded, the top annular reinforcing plate is locked at the top of the top rear crossbeam, and the insertion hole corresponds to the insert rod body. Then release the handle. Under the spring's rebound force, the insert rod moves to the right, and the right end of the insert rod inserts into the socket. At this point, the latching structure is locked, and the top pedal structure is fixed to the top rear crossbeam, improving the stability of the top pedal structure and preventing it from tilting upwards.

[0008] This utility model uses a snap-fit ​​structure to lock the top pedal structure and the top rear crossbeam, improving the stability of the top pedal and preventing it from tilting upwards. The snap-fit ​​structure is also simple and convenient to unlock and unlock.

[0009] A further feature of this invention is that an inclined surface is provided on the top left side of the fixed base.

[0010] By adopting the above technical solution, when the folding ladder body is unfolded, the right end of the insert rod body presses against the inclined surface. The reaction force formed by the inclined surface on the insert rod body can be decomposed into a force to the left. Under the action of this force, the insert rod body automatically moves to the left. When unfolding the folding ladder body, there is no need to push the handle first, making the unfolding process more convenient.

[0011] A further feature of this invention is that a second retaining ring is fixedly sleeved on the outside of the insert body, located within the cavity, and the left side wall of the second retaining ring is in contact with the push block.

[0012] By adopting the above technical solution, the second retaining ring, in conjunction with the first retaining ring, plays a limiting role in the moving block, ensuring that the moving block is always in contact with the first retaining ring.

[0013] A further feature of this invention is that the height of both the mounting block and the fixing seat is less than that of the annular reinforcing plate.

[0014] By adopting the above technical solution, it is ensured that after the folding ladder body is unfolded, the top annular reinforcing plate can be locked onto the top of the rear crossbeam.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model uses a snap-fit ​​structure to lock the top pedal structure and the top rear crossbeam, improving the stability of the top pedal and preventing it from tilting upwards. The snap-fit ​​structure is also simple and convenient to unlock and unlock. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a folding ladder with a safety buckle according to the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the buckle structure of a folding ladder with a safety buckle according to the present invention.

[0020] Figure 4 This is a partial structural diagram of the mounting block of a folding ladder with a safety buckle according to the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of a fixing base for a folding ladder with a safety buckle according to the present invention.

[0022] Reference numerals in the attached drawings: 1. Ladder body; 2. Rear crossbeam; 3. Pedal structure; 4. Pedal body; 5. Annular reinforcing plate; 6. First through slot; 7. Fixing base; 8. Mounting block; 9. Insertion hole; 10. Inclined surface; 11. Cavity; 12. Second through slot; 13. Insert rod body; 14. Handle; 15. Spring body; 16. First retaining ring; 17. Second retaining ring; 18. Toggle block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] A folding ladder with safety latches, such as Figures 1-5 As shown, the ladder includes a folding ladder body and a snap-fit ​​structure body. The folding ladder body includes a ladder frame 1 and several step structures 3. Several rear crossbeams 2 are provided on the ladder frame 1. The step structure 3 consists of a step body 4 and an annular reinforcing plate 5. The structure of the folding ladder body is a mature existing technology. For specific examples, please refer to the YBL002 household folding indoor A-frame multi-functional ladder, the YSF-7093FB household multi-functional folding A-frame ladder, and the JBS-JYT-924-GY household folding A-frame ladder, etc., which will not be specifically described in this embodiment.

[0025] A first through groove 6 is provided on the annular reinforcing plate 5 located at the top.

[0026] The snap-fit ​​structure body includes a fixing base 7 and a mounting block 8.

[0027] The fixing base 7 is fixed to the top of the rear crossbeam 2 by bolts, and an insertion hole 9 is provided on its left side. An inclined surface 10 is provided on the left side of the top of the fixing base 7.

[0028] Mounting block 8 is bolted to the bottom end of the top pedal body 4, corresponding to the left side of the fixing seat 7. A cavity 11 is formed inside mounting block 8. A second through groove 12, corresponding to the first through groove 6 and communicating with the cavity 11, is formed on mounting block 8. A spring insert structure is provided inside the cavity 11. The spring insert structure includes an insert body 13, a handle 14, and a spring body 15. The insert body 13 is located in the cavity 11. Both ends of the insert body 13 slide out of the cavity 11, and the right end of the insert body 13 is inserted into the insertion hole 9. A first retaining ring 16 and a second retaining ring 17, located inside the cavity 11, are fixedly sleeved on the outside of the insert body 13. The first retaining ring 16 and the second retaining ring 17 are spaced apart. The spring is sleeved on the outside of the insert body 13 and fixedly connected between the left side wall of the first retaining ring 16 and the cavity wall of the cavity 11. The middle position of the handle 14 is rotatably connected to the mounting block 8 via a pin. One end of the handle 14 is located inside the cavity 11 and is fixed with a lever 18. The lever 18 is located between the first retaining ring 16 and the second retaining ring 17, and its left and right sides are respectively attached to the first retaining ring 16 and the second retaining ring 17. The other end of the handle 14 passes through the second through groove 12 out of the cavity 11 and extends through the first through groove 6 to the outside of the annular reinforcing plate 5 at the top.

[0029] Working principle:

[0030] When the folding ladder body needs to be folded, push the end of the handle 14 that protrudes from the annular reinforcing plate 5 to the right. Since the middle position of the handle 14 is rotatably connected to the mounting block 8 via a pin, the handle 14 can rotate in the cavity 11, the first through slot 6, and the second through slot 12, thereby causing the end of the handle 14 located in the cavity 11 to move to the left. The handle 14 drives the lever 18 to press the first retaining ring 16, causing the first retaining ring 16 to move to the left. The first retaining ring 16 presses the spring, causing the spring to deform and generate a rightward rebound force. At the same time, the first retaining ring 16 causes the insert rod body 13 to slide to the left until the right end of the insert rod body 13 is pulled out of the insertion hole 9. At this time, the buckle structure body is released, the top step structure 3 and the top rear crossbeam 2 are no longer fixed, and the folding ladder body can be folded smoothly.

[0031] Similarly, when the folding ladder needs to be unfolded, simply unfold the ladder body. As the ladder body unfolds, the right end of the insert rod body 13 presses against the inclined surface 10. The reaction force exerted by the inclined surface 10 on the insert rod body 13 can be decomposed into a force to the left. Under the action of this force, the insert rod body 13 automatically moves to the left. After the ladder body is fully unfolded, the top annular reinforcing plate 5 is locked at the top of the top rear crossbeam 2, and the insertion hole 9 corresponds to the insert rod body 13. Under the action of the spring's rebound force, the insert rod body 13 moves to the right, and the right end of the insert rod body 13 is inserted into the insertion hole 9. At this time, the snap-fit ​​structure is locked, and the top step structure 3 is fixed to the top rear crossbeam 2, improving the stability of the top step structure 3 and preventing it from tilting upwards.

[0032] This utility model uses a snap-fit ​​structure to lock the top pedal structure 3 and the top rear crossbeam 2, improving the stability of the top pedal and preventing it from tilting upwards. The snap-fit ​​structure is also simple and convenient to unlock and unlock.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A folding ladder with a safety buckle, comprising a folding ladder body and a buckle structure body, wherein the folding ladder body includes a ladder frame (1) and a plurality of step structures (3), wherein a plurality of rear crossbeams (2) are provided on the ladder frame (1), and the step structures (3) are composed of step bodies (4) and annular reinforcing plates (5), characterized in that: The annular reinforcing plate (5) at the top has a first through groove (6). The buckle structure body includes a fixing seat (7) and a mounting block (8). The fixing seat (7) is fixed to the top of the rear crossbeam (2) at the top, and has an insertion hole (9) on its left side. The mounting block (8) is fixed to the bottom of the pedal body (4) at the top and corresponds to the left side of the fixing seat (7). The mounting block (8) has a cavity (11) inside. The mounting block (8) has a second through groove (12) that corresponds to the first through groove (6) and communicates with the cavity (11). A spring insert structure is provided in the cavity (11). The spring insert structure includes an insert body (13), a handle (14), and a spring body (15). The insert body (13) is located in the cavity (11). Both ends of the rod (13) are slidably connected to the cavity (11), and the right end of the rod body (13) is inserted into the insertion hole (9) in a mating connection manner. The outside of the rod body (13) is fixedly fitted with a first retaining ring (16) located in the cavity (11). The spring is fitted on the outside of the rod body (13) and fixedly connected between the left side wall of the first retaining ring (16) and the cavity wall of the cavity (11). The middle position of the handle (14) is rotatably connected to the mounting block (8) through a pin. One end of the handle (14) is located in the cavity (11) and is fixed with a lever (18) that fits against the right side wall of the first retaining ring (16). The other end of the handle (14) passes through the cavity (11) through the second through groove (12) and extends to the outside of the annular reinforcing plate (5) at the top through the first through groove (6).

2. The foldable ladder with a safety buckle according to claim 1, characterized in that: An inclined surface (10) is provided on the left side of the top of the fixed base (7).

3. The foldable ladder with a safety buckle according to claim 1, characterized in that: The outside of the insert body (13) is also fixedly fitted with a second retaining ring (17) located in the cavity (11), and the left side wall of the second retaining ring (17) is in contact with the push block (18).

4. The foldable ladder with a safety buckle according to claim 1, characterized in that: The heights of the mounting block (8) and the fixing seat (7) are both less than those of the annular reinforcing plate (5).

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