Portable safety hook folding ladder

Abstract

The utility model discloses a portable safety hook folding ladder which comprises ladder feet, a hook structure and a plurality of pedals, reinforcing rods are arranged on the ladder feet, and the pedals are arranged in a foldable mode in the length direction of the ladder feet. The pedal is provided with a mounting part for mounting the hook structure, the mounting part is provided with a concave mounting groove on the surface of the pedal, and the mounting groove is provided with a notch on one side of the pedal; the hook structure is provided with a pressing plate, a hook piece and an elastic piece; one end of the pressing plate is elastically mounted in the mounting groove through the elastic piece and the other end is arranged in the notch; the hook piece is provided with a connecting end used for being movably connected to the bottom of the pressing plate, the hook piece is provided with a locking hook end, and a reinforcing rod used for hooking the ladder foot is arranged below the pedal through the notch. In this way, the installation and use convenience of the hook structure is improved, the pressing plate and the hook piece can be independently replaced, the replacement cost is reduced, the high humanized design is achieved, and the use experience feeling of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ladders, in particular to a convenient safety hook folding ladder. Background Art

[0002] Foldable ladders are widely used because they take up little space and are easy to carry. For example, they are used in places such as residences, libraries, and building power maintenance. When using a foldable ladder, you need to adjust the height, angle, and footrest stability of the ladder, and then lock the adjusted ladder to ensure normal and safe use of the ladder.

[0003] At present, there are many folding ladders, such as the Chinese utility model patent with publication number CN218953227U and patent name "A herringbone ladder with a convenient lock". It is provided with a lock, which has an integrally formed installation body, a lock hook, an elastic member and an unlocking member. When locking, the main ladder and the auxiliary ladder are unfolded, and during the rotation of the top plate, the lock hook and the lock rod gradually approach and connect, and the lock hook will be pressed and rotated, so that the lock hook passes through the lock rod until the lock teeth of the lock sleeve are stuck in the lock groove of the lock hook to lock; when unlocking, the unlocking member is manually pressed, and the unlocking member moves downward to drive the installation body to rotate. When the installation body rotates, the elastic member is compressed, and the lock hook is separated from the lock teeth, and the lock between the lock hook and the lock sleeve is released.

[0004] Although the existing ladder can perform basic structural locking when it is unfolded for use, it still has the following defects: the lock of the existing ladder has a complex structural design and has many structural components. In addition, the installation body, lock hook, elastic part and unlocking part are designed in one piece. When the lock adopts an integral design, when one part of it is damaged, the entire lock needs to be replaced, which increases the replacement cost; and the locking and unlocking operations are relatively cumbersome and lack humanized design, which affects the user experience. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a convenient safety hook folding ladder.

[0006] The purpose of the utility model is achieved by the following technical solution: a portable safety hook folding ladder, comprising a ladder foot, a hook structure and a plurality of pedals, wherein a reinforcing rod is arranged on the ladder foot, and the plurality of pedals are foldably arranged along the length direction of the ladder foot;

[0007] The pedal is provided with a mounting portion for mounting the hook structure, the mounting portion is provided with a concave mounting groove on the surface of the pedal, and the mounting groove is provided with a notch on one side of the pedal;

[0008] The hook structure comprises a pressing plate, a hook member and an elastic member, one end of the pressing plate is elastically mounted on the mounting groove through the elastic member and the other end is arranged on the notch;

[0009] The hook member is provided with a connecting end for being movably connected to the bottom of the pressing plate, the hook member is provided with a locking hook end, and a reinforcing rod for hooking the ladder foot is provided below the pedal through the notch.

[0010] Furthermore, both sides of the pressing plate and the groove wall of the mounting groove are provided with shaft holes for passing a shaft rod through the shaft holes so that the movable shaft of the pressing plate is connected to the mounting groove.

[0011] Furthermore, a plurality of reinforcing plates are arranged at the bottom of the pressing plate, and the shaft rod passes through the shaft hole and penetrates the reinforcing plates.

[0012] Furthermore, the mounting groove is provided with a protruding piece connected to one end of the elastic piece, and the pressing plate is provided at the bottom of one end of the mounting groove and has a slot hole for connecting to the other end of the elastic piece.

[0013] Furthermore, the outer side surface of the locking hook end is provided with a guiding inclined surface for guiding the sliding toward the reinforcing rod, and the inner side surface of the locking hook end is provided with a hooking portion for hooking the reinforcing rod.

[0014] Furthermore, the hooking direction of the hooking portion is arranged toward the bottom direction of the installation groove, so as to enable the guide inclined surface to slide down along the surface of the reinforcing rod and then hook the reinforcing rod through the hooking portion.

[0015] Furthermore, limiting members abutting against the hook member are arranged on both sides of the pressing plate, so as to drive the hooking portion of the hook member to separate from the reinforcing rod through the limiting members when the pressing plate flips upward.

[0016] Furthermore, the ladder foot comprises a first ladder foot and a second ladder foot, the upper ends of the first ladder foot and the second ladder foot are movably connected to each other, and the lower ends of the first ladder foot and the second ladder foot are supported on the ground.

[0017] Furthermore, one end of the pedal is movably connected to the first ladder foot via a pin shaft, and a positioning groove is provided at the bottom of the other end of the pedal and is embedded in the reinforcing rod of the second ladder foot via the positioning groove.

[0018] Furthermore, one end of the pedal is movably connected to the first ladder foot via a pin, and the other end of the pedal is movably connected to the pedals arranged on the upper and lower layers and the pins of the second ladder foot via a folding connecting plate.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the hook structure provided in the embodiment of the present application is mainly composed of two major parts: a pressing plate and a hanging member, and the pressing plate and the hook member are both of an integrally formed design. When the hook structure is installed and used, only one end of the pressing plate needs to be elastically mounted on the mounting groove of the pedal through an elastic member, and the other end of the pressing plate is arranged in the notch of the mounting groove, so that the entire hook structure can be completely assembled into the mounting part of the pedal, thereby improving the sense of integrity between the hook structure and the pedal; the connecting end of the hook member is movably connected to the bottom of the pressing plate, making it easier to hook the reinforcing rod on the ladder foot; compared with the previous locking structure with many components and an integrally formed design, the hook structure in the embodiment of the present application is easier to install and use, and the pressing plate and the hook member can be replaced independently, reducing the replacement cost, having a highly humanized design, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of a convenient safety hook folding ladder in a preferred embodiment of the utility model;

[0021] Figure 2 This is a three-dimensional diagram of a hook structure disposed on a pedal in a preferred embodiment of the utility model;

[0022] Figure 3 This is a three-dimensional diagram of the hook structure and the pedal separated in a preferred embodiment of the utility model;

[0023] Figure 4 It is another three-dimensional diagram of the hook structure and the pedal separated in the preferred embodiment of the utility model;

[0024] Figure 5 This is a three-dimensional diagram of the hook member, the reinforcing rod and the pedal separated in a preferred embodiment of the utility model;

[0025] Figure 6 for Figure 5 Magnified view at A in the middle;

[0026] Figure 7 This is a bottom view of the pedal and hook structure in a preferred embodiment of the utility model;

[0027] Figure 8 for Figure 7 The three-dimensional cross-sectional view after cutting along the middle BB direction;

[0028] Fig. 9 for Figure 8 Magnified view at center C.

[0029] In the figure:

[0030] 10. First ladder foot; 11. Second ladder foot; 12. Reinforcement rod;

[0031] 20. hook structure; 201. pressing plate; 2011. shaft hole; 2012. slot hole; 2013. reinforcing plate; 2014. stopper; 202. hook member; 2021. connecting end; 2022. locking hook end; 2023. guiding inclined surface; 2024. hooking part; 2025. tripping inclined surface; 203. elastic member; 204. shaft rod;

[0032] 30. Pedal; 301. Positioning groove; 302. Mounting portion; 3021. Mounting groove; 3022. Protrusion; 3023. Notch; 303. Folding connecting plate. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] like Figure 1-9 As shown, a portable safety hook folding ladder can be used in daily living, libraries, building power maintenance and other places. The portable safety hook folding ladder includes a ladder foot, a hook structure 20 and a plurality of pedals 30, wherein the ladder foot includes a first ladder foot 10 and a second ladder foot 11, the upper ends of the first ladder foot 10 and the second ladder foot 11 are movably connected to each other, the lower ends of the first ladder foot 10 and the second ladder foot 11 are supported on the ground, the first ladder foot 10 is set as a U-shaped structure with an opening facing the ground, the second ladder foot 11 is composed of two parallel pipe feet, and the two leg tubes are connected by a plurality of reinforcing rods 12, the upper end of the second ladder foot 11 is movably connected to the upper end of the first ladder foot 10, so that the second ladder foot 11 is used as a fulcrum for the first ladder foot 10 to be unfolded and supported or folded and stored.

[0035] The pedals 30 are provided in a plurality of pieces, and the plurality of pedals 30 are movably provided along the length direction of the first ladder foot 10 and the second ladder foot 11. In the embodiment of the present application, two pedals 30 are preferably provided on the ladder foot. Among them, the two sides of one end of the pedal 30 near the lower end of the ladder foot are movably connected with the first ladder foot 10 through a pin shaft, and the two sides of the other end of the pedal 30 are movably connected with the pedal 30 near the upper end of the ladder foot and the pin of the second ladder foot 11 through a folding connecting plate 303. Therefore, the pedal 30 near the lower end of the ladder foot serves as a driven pedal 30.

[0036] The pedal 30 arranged near the upper end of the ladder foot is used as the active pedal 30. The driven pedal 30 is driven by operating the active pedal 30. The upper surfaces of the active pedal 30 and the driven pedal 30 are both provided with a plurality of anti-slip grooves to increase the friction when the user steps on the pedal 30, making it safer to use.

[0037] The left and right sides of one end of the active pedal 30 are movably connected to the first ladder foot 10 through a rotating shaft, so that the pedal 30 can be turned upside down on the first ladder foot 10. When the pedal 30 is turned to a horizontal state, the other end of the pedal 30 can be supported on the reinforcing rod 12 of the second ladder foot 11. A positioning groove 301 is provided at one end of the pedal 30 supported on the reinforcing rod 12, and the positioning groove 301 is arranged at the bottom of the pedal 30. Therefore, the pedal 30 can be matched and engaged with the reinforcing rod 12 on the second ladder foot 11 through the positioning groove 301 at the bottom, thereby preventing the pedal 30 from sliding in the horizontal direction, and further improving the overall stability of the pedal 30 and the folding ladder.

[0038] The pedal 30 is provided with a mounting portion 302 for mounting the hook structure 20 at the other end side of the positioning groove 301. The mounting portion 302 is provided with a concave mounting groove 3021 on the surface of the pedal 30. The mounting groove 3021 is provided with a notch 3023 on one side of the pedal 30. Specifically, the hook structure 20 comprises a pressing plate 201, a hook member 202 and an elastic member 203. The mounting groove 3021 is provided with a convex member 3022 protruding upward. The elastic member 203 is vertically arranged. The lower end of the elastic member 203 is sleeved on the convex member 3022. The bottom of one end of the pressing plate 201 has a slot 2012 for assembling the upper end of the elastic member 203. The elastic member 203 used in the embodiment of the present application is a telescopic spring.

[0039] When installing the pressing plate 201 , first install the elastic member 203 on the protruding member 3022 , then align the slot 2012 set at one end of the pressing plate 201 with the upper end of the elastic member 203 , and press down one end of the pressing plate 201 to install it in the installation slot 3021 . In addition, both sides of the pressing plate 201 and the groove wall of the installation groove 3021 are provided with shaft holes 2011 for passing the shaft rod 204 through the shaft holes 2011. A plurality of reinforcing plates 2013 are provided at the bottom of the pressing plate 201. The shaft rod 204 passes through the shaft holes 2011 and passes through the reinforcing plates 2013, thereby improving the connection strength between the pressing plate 201 and the shaft rod 204, so that one end of the pressing plate 201 provided with the groove hole 2012 is movably connected to the installation groove 3021 through the shaft rod 204, and the pressing plate 201 is also elastically installed on the installation groove 3021 of the pedal 30 through the elastic member 203, and the other end of the pressing plate 201 can be arranged on the notch 3023. Therefore, the hook structure 20 can be completely arranged in the installation portion 302 of the pedal 30, improving the assembly stability between the hook structure 20 and the pedal 30, and the overall effect is higher.

[0040] When installing the hook member 202, the hook member 202 is provided with a connecting end 2021 and a locking hook end 2022. The connecting end 2021 is provided with a connecting hole. The connecting end 2021 is movably connected to the shaft rod 204 penetrating the reinforcing plate 2013 at the bottom of the pressing plate 201 through its connecting hole, thereby making the hook member 202 movably connected to the bottom of the pressing plate 201.

[0041] The lock hook end 2022 of the hook member 202 extends to the bottom of the pedal 30 through the slot 3023, and the outer side surface of the lock hook end 2022 is provided with a guide slope 2023 for guiding the sliding toward the reinforcing rod 12, and the inner side surface of the lock hook end 2022 is provided with a hooking portion 2024, and the hooking direction of the hooking portion 2024 is set toward the bottom direction of the installation slot 3021.

[0042] Therefore, during the locking action, the pressing plate 201 is pressed downward manually, and under the elastic action of the elastic member 203, the elastic member 203 will push the pressing plate 201 upward to be installed at one end of the mounting groove 3021. Then, the end of the pressing plate 201 arranged at the groove 3023 will press down the top of the hook member 202, so that the guide inclined surface 2023 of the locking hook end 2022 of the hook member 202 can slide downward along the surface of the reinforcing rod 12. When the hooking portion 2024 slides to the bottom of the reinforcing rod 12, the pressing plate 201 can be lifted with a little force to make the hooking portion 2024 hook the reinforcing rod 12 of the ladder foot.

[0043] During the unlocking action, the user holds the pressing plate 201 configured at one end of the slot 3023, manually lifts the pressing plate 201 to flip it upward, and the pressing plate 201 abuts against the bottom of the hook member 202 through the limiting members 2014 on both sides of its bottom, and the bottom of the hook member 202 is provided with a disengaging slope 2025 for abutting against the limiting member 2014 of the pressing plate 201, and the disengaging slope 2025 is gradually inclined upward from the connecting end 2021 and the lock hook end 2022 of the hook member 202 to the middle of the hook member 202. When the user manually lifts up the pressing plate 201, the limiting member 2014 of the pressing plate 201 slides along the tripping slope 2025 from the connecting end 2021 of the hook member 202 to the locking hook end 2022, so that the locking hook end 2022 can flip upward with the pressing plate 201 until the locking hook end 2022 is detached from the reinforcing rod 12. The operation is simple, physical effort is saved, and the user's needs for convenient use are met.

[0044] Thus, the hook structure 20 provided in the embodiment of the present application is mainly composed of two parts, namely, a pressing plate 201 and a hanging member 202, and the pressing plate 201 and the hook member 202 are both integrally formed. When the hook structure 20 is installed and used, only one end of the pressing plate 201 needs to be elastically mounted on the mounting groove 3021 of the pedal 30 through the elastic member 203, and the other end of the pressing plate 201 is arranged in the notch 3023 of the mounting groove 3021, so that the entire hook structure 20 can be completely assembled into the mounting portion 302 of the pedal 30, thereby improving the sense of integrity between the hook structure 20 and the pedal 30; the connecting end 2021 of the hook member 202 is movably connected to the bottom of the pressing plate 202, so that it is easier to hook the reinforcing rod 12 on the ladder foot. Compared with the previous locking structure with many parts and an integrally formed design, the hook structure 20 in the embodiment of the present application is easier to install and use, and the pressing plate 201 and the hook member 202 can be replaced independently, reducing the replacement cost, having a high humanized design, and improving the user experience.

[0045] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A portable safety hook folding ladder, characterized in that: It comprises a ladder foot, a hook structure and a plurality of pedals, wherein the ladder foot is provided with a reinforcing rod, and the plurality of pedals are foldably arranged along the length direction of the ladder foot; The pedal is provided with a mounting portion for mounting the hook structure, the mounting portion is provided with a concave mounting groove on the surface of the pedal, and the mounting groove is provided with a notch on one side of the pedal; The hook structure comprises a pressing plate, a hook member and an elastic member, one end of the pressing plate is elastically mounted on the mounting groove through the elastic member and the other end is arranged on the notch; The hook member is provided with a connecting end for being movably connected to the bottom of the pressing plate, the hook member is provided with a locking hook end, and a reinforcing rod for hooking the ladder foot is provided below the pedal through the notch.

2. The portable safety hook folding ladder according to claim 1, characterized in that: Both sides of the pressing plate and the groove wall of the mounting groove are provided with shaft holes for passing shaft rods through the shaft holes so that the movable shaft of the pressing plate is connected to the mounting groove.

3. The portable safety hook folding ladder according to claim 2, characterized in that: A plurality of reinforcing plates are arranged at the bottom of the pressing plate, and the shaft rod passes through the shaft hole and penetrates the reinforcing plates.

4. The portable safety hook folding ladder according to claim 1, characterized in that: The mounting groove is provided with a protruding piece connected to one end of the elastic piece, and the pressing plate is provided at the bottom of one end of the mounting groove and has a slot hole for connecting to the other end of the elastic piece.

5. The portable safety hook folding ladder according to claim 1, characterized in that: The outer side surface of the locking hook end is provided with a guiding inclined surface for guiding the locking hook end to slide toward the reinforcing rod, and the inner side surface of the locking hook end is provided with a hooking portion for hooking the reinforcing rod.

6. The portable safety hook folding ladder according to claim 5, characterized in that: The hooking direction of the hooking portion is arranged toward the bottom of the installation groove, so as to enable the guide inclined surface to slide down along the surface of the reinforcing rod and then hook the reinforcing rod through the hooking portion.

7. The portable safety hook folding ladder according to claim 5, characterized in that: Limiting members abutting against the hook members are arranged on both sides of the pressing plate, and are used to drive the hooking part of the hook member to separate from the reinforcing rod through the limiting members when the pressing plate flips upward.

8. The portable safety hook folding ladder according to any one of claims 1 to 7, characterized in that: The ladder foot comprises a first ladder foot and a second ladder foot, the upper ends of the first ladder foot and the second ladder foot are movably connected to each other, and the lower ends of the first ladder foot and the second ladder foot are supported on the ground.

9. The portable safety hook folding ladder according to claim 8, characterized in that: One end of the pedal is movably connected to the first ladder foot via a pin shaft, and a positioning groove is provided at the bottom of the other end of the pedal and is embedded in the reinforcing rod of the second ladder foot via the positioning groove.

10. The portable safety hook folding ladder according to claim 8, characterized in that: One end of the pedal is movably connected to the first ladder foot via a pin shaft, and the other end of the pedal is movably connected to the pedals arranged on the upper and lower layers and the pins of the second ladder foot via a folding connecting plate.

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