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KR-20260066558-A - ladder auxiliary support

KR20260066558AKR 20260066558 AKR20260066558 AKR 20260066558AKR-20260066558-A

Abstract

The core of the present invention is a ladder auxiliary support installed on the outer side of two vertical frames constituting a ladder and supporting the ladder, comprising a connecting frame horizontally connected to the outer side of the vertical frame, a fixed frame vertically connected to the end of the connecting frame and having a hole formed inside, a vertical moving frame penetrating the hole of the fixed frame and moving vertically up and down along the hole, and a rocker that restrains or releases the vertical movement of the vertical moving frame.

Inventors

  • 손상락

Assignees

  • 해피웍플레이스 주식회사

Dates

Publication Date
20260512
Application Date
20241104

Claims (3)

  1. In a ladder auxiliary support installed on the outer side of two vertical frames (2) constituting the ladder (1) and supporting the ladder (1) in an auxiliary manner, A connecting frame (10) horizontally connected to the outside of the vertical frame (2); A fixed frame (20) that is vertically connected to the end of the connecting frame (10) and has a hole (21) formed inside; A vertical moving frame (30) that penetrates the hole (21) of the fixed frame (20) and moves vertically up and down along the hole (21); A ladder auxiliary support comprising a rocker (40) that restrains or releases the vertical movement of a vertical movement frame (30).
  2. In Article 1, The rocker (40) comprises a housing (50) fixed to the outer surface of the connecting frame (20), and A slider (60) that is inserted into the internal space (51) of the housing (50) and slides left and right, and A grip (70) installed on the outer surface of the slider (60) and exposed to the outside of the housing (50) to allow the slider (60) to move left and right, and A spring (70) installed inside the housing (50) and elastically supporting the left and right movement of the slider (60), and A plurality of stopper protrusions (61) protruding from the inner surface of the slider (60), A fastening hole (22) formed to penetrate the outer surface of the fixed frame (20) and positioned horizontally in alignment with the slider (60), It is composed of several locking projections (31) that protrude from the outer surface of the vertical moving frame (30) at regular intervals; A ladder auxiliary support capable of fixing a vertical moving frame (30) to a fixed frame (20), wherein some of the locking protrusions (31) are exposed to the outside of the fixed frame (20) through the fastening hole (22), and a stopper protrusion (61) protruding from the inner surface of the slider (60) is engaged with the locking protrusion (31) exposed in the fastening hole (22) in an offset manner.
  3. In Paragraph 2, A ladder auxiliary support having a locking groove (62) formed between stopper protrusions (61) into which a locking protrusion (31) is inserted, wherein the width (63) of the locking groove (62) is formed to be at least twice as wide as the thickness (33) of the locking protrusion (31).

Description

ladder auxiliary support The present invention is an improved ladder auxiliary support in which an auxiliary support is installed on a leg member constituting a ladder, and the height of the auxiliary support is adjusted according to the angle of inclination of the ground. 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. FIGS. 1 to 9 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 the 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 prevents the ladder from tilting due to uneven floors. 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), and a rocker (50). The connecting frame (10) is connected to the vertical frame (2) via an axis (6) and a sleeve (7) so that it can be folded or unfolded. An axis (6) is attached to the outer side of the vertical frame (2), and a sleeve (7) is attached to one side of the connecting frame (10). When the sleeve (7) is inserted into the axis (6), the connecting frame (10) can rotate around the axis (6) on the outer side of the vertical frame (2) and fold or unfold. The connecting frame (10), assembled with an axis (6) and a sleeve (7) on the vertical frame (2), 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. A 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 penetrates the hole (21) of the fixed frame (20), and after it comes into contact with the ground, it is fixed to the fixed frame (20) by the operation of the rocker (50) and supports the ladder (1) on the ground. The locker (40) locks the v