KR-20260066556-A - ladder auxiliary support

Abstract

The core of the present invention is to install auxiliary supports on both sides of a ladder, and the auxiliary supports can be used by being unfolded outward from the hinge portion while stacked on the front and rear of the ladder by means of an unfolding and folding angle control unit, and the unfolding angle control unit is installed on the hinge portion to fix the unfolded auxiliary supports in a state where the unfolding angle is adjusted in multiple stages, thereby increasing the convenience of use according to the ground conditions.

Inventors

• 손상락

Assignees

• 해피웍플레이스 주식회사

Dates

Publication Date

20260512

Application Date

20241104

Claims (2)

1. In a ladder auxiliary support installed on the outer side of two vertical frames (2) constituting a ladder (1) and supporting the ladder in an auxiliary manner, A connecting frame (10) that is hinged to the outside of the vertical frame (2) and unfolds to the outside of the ladder (1) around an axis (6) while in a folded state at the front and rear of the ladder (1), and A fixed frame (20) vertically connected to the end of the connecting frame (10), and A holder (500) that is fixed to the outer surface of a vertical frame (2) by a bracket piece (502) and has a shaft hole (503) formed through the center so that a shaft (6) can pass through, and Folding retaining hole (504) and unfolding retaining hole (505) formed through one outer surface and the other outer surface of the holder (500), respectively, and Two holes (11, 13) penetrating the connecting frame (10), and A push button part (601) exposed above one hole (11); A body part (602) that extends below the push button part (601), vertically penetrates the hole (11), and descends inside the hole (11) by the pressing action of the push button part (601), and A U-bolt (600) composed of a 2-body part (604) which is provided with a 1-body part (602) and a connecting part (603) in between, and which is hooked onto the folding holding hole (504) or unfolding holding hole (505) of the holder (500) while vertically penetrating the 2-hole (12), and which descends inside the 2-hole (12) and separates from the folding holding hole (504) or unfolding holding hole (505) of the holder (500) by the pressing action of the push button part (601); A catch (606, 607) installed respectively on the outer surface of the 1 body part (602) and the lower inner circumference of the 1 hole (11), and A ladder auxiliary support comprising a unfolding and folding mechanism (700) composed of a spring (605) that is inserted into a hole (11) and fitted onto the outer diameter of a body part (602), with its upper and lower surfaces hooked onto locking projections (606, 607) respectively, elastically supports the body part (602) as it descends, and returns the body part (602) and the body part (604) as the push button part (601) is released.
2. In Article 1, A ladder auxiliary support having a first opening angle maintaining hole for keeping the auxiliary support open at 180 degrees or less and a second opening angle maintaining hole for keeping the auxiliary support open at 240 degrees or less, respectively formed on the front and rear outer surfaces of the holder (500).

Description

ladder auxiliary support The present invention installs auxiliary supports on both sides of a ladder, and allows the auxiliary supports to be used by unfolding outward from a hinge point while stacked on the front and rear of the ladder, and fixes the unfolded auxiliary supports in a state where the unfolding angle is adjusted in multiple stages to increase convenience of use according to the ground conditions. A ladder is a tool that allows a worker to stand on it and perform tasks at various work sites where work such as carpentry, wallpapering, plastering, electrical work, painting, film application, and tiling must be carried out at high places. However, if a worker loses their balance or experiences even slight instability while working on the ladder, the ladder may tilt and fall over. Utility Model Registration Publication No. 0470382 registered in Korea discloses an invention that provides an auxiliary support device for a saddle ladder, in which a long support member is installed in the longitudinal and transverse directions between the legs of the saddle ladder so that the legs are stably supported on the ground, thereby reducing shaking and enabling safe work. However, the support disclosed in Utility Model Registration Publication No. 0470382 is designed to stably support the leg portion, and the support is composed of two frames, and the length of the support is adjusted by fastening bolts to fastening holes formed in the two frames. However, fastening bolts into the holes is impractical because it is difficult to accurately align the holes formed in each frame, and even if the holes are aligned, adjusting the length by inserting and fastening the bolts is difficult for a single person. Fig. 1: Dimensional view of a ladder auxiliary support Fig. 2: Diagram showing the length adjustment state of the auxiliary support in a ladder auxiliary support. Fig. 3: Enlarged view of the auxiliary support of Fig. 1 Fig. 4: Enlarged view of the rocker of the auxiliary support of Fig. 1 Fig. 5: Excerpt of the auxiliary support fixed frame and vertical movable frame of Fig. 1 FIG. 6: An excerpt showing a partial main configuration of the rocker on the fixed frame and vertical moving frame of FIG. 5. Fig. 7: A state in which a rocker is engaged with the fixed frame and vertical moving frame of Fig. 5. Fig. 8: Cross-sectional view of Fig. 7. Fig. 9: Cross-sectional view of the operation of Fig. 8. Fig. 10: 3D view of the unfolding and folding angle control unit of Fig. 1 FIG. 11: Cross-sectional view of the unfolding and folding angle control unit in FIG. 10. Fig. 12: Operation of Fig. 11 FIG. 13: Plan view of the unfolding and folding angle control unit of FIG. 10. FIGS. 14, 15, 16: Operation diagrams for each step of the unfolding and folding angle control unit of FIG. 10 FIGS. 1 to 16 are drawings illustrating examples for explaining the ladder auxiliary support of the present invention. Referring to the drawings, the ladder (1) is composed of two vertical frames (2) arranged to face each other and manufactured to have a certain length, and a plurality of step frames (4) installed apart with a certain spacing (3) between the vertical frames (2), so that a worker can step on the step frames (4) to climb up and perform work in a work area located at a high place. A ladder (1) made of a vertical frame (1) and a step frame (4) can perform the function of a ladder (1) itself, or multiple ladders of the same structure can be placed together to form a stable structure that has a "∧" shape when viewed from the side. An auxiliary support (5) is installed on the outer side of each vertical frame (1). The auxiliary support (5) is a device that prevents the ladder (1) from easily tipping over due to external impact while using the ladder (1) in the workplace, and also supports the ladder so that it does not tilt due to uneven flooring. The auxiliary support (5) is installed on the outer side of each of the two vertical frames (2) with the same structure. The auxiliary support (5) is composed of a combination of a connecting frame (10), a fixed frame (20), a vertical moving frame (30), a rocker (40), and an unfolding and folding angle control unit. The connecting frame (10) is connected to the vertical frame (2) via an axis (6) so that it can be folded or unfolded. The connecting frame (10), assembled to the vertical frame (2) by an axis (6), allows the fixed frame (20) to be supported at a certain distance from the outside of the vertical frame (2). The fixed frame (20) has a rectangular cross-sectional shape and a hole (21) is formed inside. The vertical moving frame (30) passes through the hole (21) of the fixed frame (20), and the vertical moving frame (30) moves up and down along the hole (21) to adjust the height of the auxiliary supporter (5). The vertical moving frame (30) is a frame that supports the ladder (1) so that it does not shake by directly contacting the ground. The vertical moving frame (30) vertically p