KR200494941Y1 - Ladder - Google Patents

Abstract

A ladder that can work safely even in high positions is introduced.
The ladder includes a pair of first frames arranged parallel to each other, a first support bar connecting the pair of first frames, and a pair of rotatably connected to the pair of first frames, arranged parallel to each other. It may include a second frame, a second support bar connecting the pair of second frames, and an electromagnet unit provided at a lower end of at least one of the pair of first frames and the pair of second frames.

Description

ladder{LADDER}

The present invention relates to a ladder.

In general, a so-called A-type ladder is used when working at heights at a construction site or the like. However, since the A-type ladder is a structure in which a pair of ladders are hinged from the top, there is a risk of falling and slipping when climbing up the ladder.

In particular, there is a risk of injury from slipping when the A-type ladder is leaned against the wall for wall work. In the case of using the ladder spread out, it is difficult to work because it cannot be installed in close contact with the wall. If the length of both ladders is adjusted to be different and used in the form of a right-angled triangle, the ladder installed on the opposite side of the wall does not apply a load, so there is a risk of injury from sliding as well.

As such, there is a risk that the A-type ladder falls or slides in the front and rear directions and there is a risk of injury. It is necessary to always have at least two workers.

However, since most ladder users have to climb the ladder by themselves to work, there is a considerable difficulty in the work, and ladder overturning accidents are frequently reported as a result. In addition, even when an individual works using the A-type ladder, there is a problem that there is a similar risk of accidents because there is not enough person to hold the A-type ladder, so the work is carried out alone.

Accordingly, there is a need for a technology that can ensure the safety of the operator even at a high position of the ladder by securely fixing the A-type ladder to the floor surface.

Patent Literature: Domestic Registered Patent No. 10-1825327 (Registered on January 29, 2018)

Embodiments of the present invention are intended to provide a ladder that can be safely operated even in a high position because it is possible to be fixed to the floor.

Ladder according to an embodiment of the present invention, a pair of first frames arranged parallel to each other; a first support bar connecting a pair of the first frames; a pair of second frames rotatably connected to the pair of first frames and disposed parallel to each other; a second support bar connecting a pair of the second frames; and an electromagnet unit provided at a lower end of at least one of the pair of first frames and the pair of second frames.

In this case, the present invention further includes a connection frame having both ends hingedly connected to the first frame and the second frame, respectively, and the connection frame includes a first connecting bar having one end hingedly connected to a lower portion of the first frame; and a second connecting bar having one end hinge-connected to the lower portion of the second frame and the other end hinge-connected to the other end of the first connecting bar.

In addition, the present invention is a safety frame rotatably connected to the upper portion of the second frame through a rotation pin; and a holder installed on the second frame and provided with a fixing hole into which an end of the safety frame can be inserted. A movement slit may be formed so that it can be moved in one direction.

In addition, the present invention provides a support plate, one end of which is hingedly connected to the second frame; and a rotating bar having one end hingedly connected to the first frame and the other end hingedly connected to the support plate.

In addition, the electromagnet unit includes a power supply; an electromagnet unit capable of generating magnetic force by receiving power from the power supply unit; and a switch unit for selectively applying power from the power supply unit to the electromagnet unit.

Since the embodiments of the present invention can firmly fix the ladder to the floor using an electromagnet unit, even in a state where the operator climbs to a high point of the ladder, there is an advantage that the operator can safely work.

In particular, the embodiments of the present invention have the advantage that, while climbing to a high point of the ladder, the operator can safely proceed with the operation while being supported on the safety frame.

1 is a combined perspective view showing a ladder according to an embodiment of the present invention.
Figure 2 is a state diagram showing an operating state of the safety frame in a ladder according to an embodiment of the present invention.
Figure 3 is a state diagram showing the operating state of the support plate when installing the ladder according to an embodiment of the present invention.
Figure 4 is a state diagram showing the operating state of the support plate when folding the ladder according to an embodiment of the present invention.
5 is a block diagram illustrating an electromagnet unit of a ladder according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration and operation according to the embodiment of the present invention will be described in detail. The following description is one of several aspects of the present invention that can be claimed as a utility model, and the following description may form a part of the detailed description of the present invention. However, in describing the present invention, detailed descriptions of known configurations or functions may be omitted for clarity of the present invention.

Since the present invention can make various changes and can include various embodiments, specific embodiments are illustrated in the drawings and described in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

In addition, terms including ordinal numbers such as 1st, 2nd, etc. may be used to describe various components, but the components are not limited by these terms. These terms are used only for the purpose of distinguishing one component from another. When an element is referred to as being 'connected' or 'connected' to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Figure 1 is a combined perspective view showing a ladder according to an embodiment of the present invention, Figure 2 is a state diagram showing the operating state of the safety frame in the ladder according to an embodiment of the present invention, Figure 3 is of the present invention When installing the ladder according to an embodiment, it is a state diagram showing the operating state of the support plate, Figure 4 is a state diagram showing the operating state of the support plate when folding the ladder according to an embodiment of the present invention, Figure 5 is this It is a block diagram showing the electromagnet unit of the ladder according to an embodiment of the invention.

1 to 5, the ladder according to an embodiment of the present invention, the first frame 110, the second frame 120, the connection frame 400, the electromagnet unit 300, the safety frame 500 , a holder 600 , a support plate 700 , and a rotation bar 800 may be included.

Specifically, the first frame 110 may include a pair of frames spaced apart from each other in parallel. A plurality of first support bars 210 may be horizontally connected to the pair of frames to be spaced apart from each other in the height direction. For example, the first frame 110 and the first support bar 210 may be provided in a "ㅒ" shape as a whole.

The second frame 120 may be rotatably connected to the first frame 110 to be foldable. For example, the upper end of the first frame 110 and the upper end of the second frame 120 may be rotatably linked through a folding bracket. Through this, the first frame 110 and the second frame 120 can be conveniently moved or stored in a narrow space in a state in which the ladder is not used while being superimposed on each other.

The second frame 120 may include a pair of frames configured in a shape similar to that of the first frame 110 . A plurality of second support bars 220 may be horizontally connected to the second frame 120 to be spaced apart from each other in the height direction. For example, the second frame 120 and the second support bar 220 may be provided in an overall “ㅒ” shape.

The electromagnet unit 300 may be provided at lower ends of the first frame 110 and the second frame 120 . In this embodiment, the electromagnet unit 300 is installed at the lower end of the first frame 110 and the second frame 120, respectively, but the electromagnet unit 300 is installed only at the lower end of the first frame 110, or 2 It may be installed only at the lower end of the frame 120 .

The electromagnet unit 300 includes an electromagnet unit 310 mounted on the lower end of the first frame 110 or the lower end of the second frame 120 , and a power supply unit 320 provided in the form of a battery for supplying power; A switch unit 330 for selectively applying power from the supply unit 320 to the electromagnet unit 310 may be included.

Accordingly, in a state in which the ladder is placed on the floor surface to which the magnetic force is applicable (eg, on the iron plate of the ship..), when the operator operates the operation switch of the switch unit 330 on, the switch unit ( By the ON operation of 330), the power of the power supply unit 320 may be applied to the electromagnet unit 310, and at this time, through the magnetic force by the electromagnet unit 310, the ladder can be securely fixed to the floor surface have.

The connection frame 400 may be hinge-connected between the first frame 110 and the second frame 120 . For example, the connecting frame 400 includes a first connecting bar 410 having one end hinge-connected to the lower portion of the first frame 110 , one end hinge-connected to the lower portion of the second frame 120 , and the other end being hinged to the lower portion of the second frame 120 . The second connecting bar 420 may be hingedly connected to the other end of the first connecting bar 410 .

The safety frame 500 may be understood as a safety device that can reduce the risk of falling of the operator when working at a high position of the ladder. For example, the operator supports the body on the safety frame 500 , or in a state in which the safety frame 500 is gripped, the operation can be safely performed at a high position of the ladder.

The safety frame 500 may be rotatably connected to an upper portion of the second frame 120 through a rotation pin 510 . When moving or storing the ladder, the safety frame 500 maintains the state rotated in close contact with the second frame 120 by the operator, so the movement and storage of the ladder can be facilitated. On the other hand, when the operator's work using a ladder is required, the safety frame 500 maintains the state rotated so as to be positioned on the same line as the second frame 120 by the operator, so that the operator is placed on the safety frame 500 . In a supported state, you can perform safe work.

A movable slit 520 through which the rotation pin 510 is movable in the longitudinal direction may be extended in the safety frame 500 . The movement slit 520 may provide a movement path through which the rotation pin 510 can move relative to each other. Accordingly, when inserting the end of the safety frame 500 into the holder 600 , the operator uses the moving slit 520 to insert the end of the safety frame 500 into the fixing groove 610 of the holder 600 . It can be inserted and fixed.

The holder 600 may be configured as a pair respectively installed on the upper portion of the pair of second frames 120 . A fixing groove 610 for fixing the end of the safety frame 500 may be formed in the holder 600 . The fixing groove 610 may provide a holding space into which the end of the safety frame 500 can be inserted.

The support plate 700 may be made of a plate that allows the operator to mount the operator's feet at the height of the ladder. One end of the support plate 700 may be hingedly connected to the second frame 120 , and a middle portion of the support plate 700 may be rotatably connected to the first frame 110 through a rotation bar 800 . Accordingly, when the first frame 110 and the second frame 120 are folded to each other, the support plate 700 is rotated by the second frame 120 and the rotation bar, and can be folded into the ladder.

The rotation bar 800 may rotatably connect between the support plate 700 and the first frame 110 . For example, one end of the rotation bar 800 may be hinge-connected to the first frame 110 , and the other end of the rotation bar 800 may be hinge-connected to the support plate 700 .

The operation process of the present invention having such a configuration will be described as follows.

First, the operator moves the ladder to a place that requires a ladder operation, in particular, a place with a floor surface to which magnetic force is applicable, while holding the ladder. At this time, the first frame 110 and the second frame 120 of the ladder is maintained in a folded state.

When the movement of the ladder to the place where the ladder work is completed, the operator rotates the support plate 700 so that the support plate 700 is maintained in a horizontal state while unfolding the first frame 110 and the second frame 120 . Then, the safety frame 500 is rotated to be positioned on the same line as the second frame 120 . Thereafter, the switch unit 330 of the electromagnet unit is turned on. At this time, by the ON operation of the switch unit 330 , the power of the power supply unit 320 may be applied to the electromagnet unit 310 , and through the magnetic force by the electromagnet unit 310 , the ladder is fixed to the floor surface , the installation of the ladder is completed.

In this way, when the installation of the ladder is completed, the operator can safely perform work at height in a state supported by the safety frame 500 while climbing to the support plate 700 of the ladder using the ladder.

When the aerial work using the ladder is completed, the operator may fold the first frame 110 and the second frame 120 in the reverse order of the above-described method. Thereafter, the operator can store the ladder by moving it to its original position in the folded state.

As described above, the present invention can securely fix the ladder to the floor using the electromagnet unit, so even when the operator climbs to the high point of the ladder, the operator can safely perform the work, and the high point of the ladder In a state on which the operator is mounted, it has excellent advantages such as being able to safely proceed with work while being supported by the safety frame.

Although embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be implemented in other specific forms without changing its technical spirit or essential features. you will be able to understand For example, those skilled in the art may change the material, size, etc. of each component according to the field of application, or combine or substitute the embodiments in a form not clearly disclosed in the embodiment of the present invention, but this is also the present invention that does not exceed the scope of Therefore, the embodiments described above should not be understood as illustrative and limiting in all respects, and it should be said that these modified embodiments are included in the technical idea described in the utility model registration claims of the present invention.

110: first frame 120: second frame
121 : main frame 122 : sub frame
210: first support bar 220: second support bar
300: electromagnet unit 310: electromagnet unit
320: power supply 330: switch unit
400: Connection frame 500: Safety frame
510: rotating pin 520: moving slit
600: holder 610: fixing hole
700: support plate 800: rotating bar

Claims (5)

a pair of first frames disposed parallel to each other;
a first support bar connecting a pair of the first frames;
a pair of second frames rotatably connected to the pair of first frames and disposed parallel to each other;
a second support bar connecting a pair of the second frames;
an electromagnet unit provided at a lower end of at least one of the pair of first frames and the pair of second frames;
a safety frame rotatably connected to an upper portion of the second frame through a rotation pin; and
and a holder installed on the second frame and provided with a fixing hole into which an end of the safety frame can be inserted,
The safety frame has a ladder in which the rotation pin is inserted so that a movement slit is formed so that the safety frame can be moved in one direction with respect to the rotation pin. The method of claim 1,
Further comprising a connection frame having both ends hingedly connected to the first frame and the second frame, respectively,
The connecting frame is
a first connecting bar having one end hinge-connected to a lower portion of the first frame; and
One end is hinged to the lower portion of the second frame, the other end of the ladder comprising a second connecting bar hinged to the other end of the first connecting bar. delete The method of claim 1,
a support plate having one end hingedly connected to the second frame; and
One end is hinged to the first frame, the other end is a ladder comprising a rotation bar hinged to the support plate. The method of claim 1,
The electromagnet unit is
power supply;
an electromagnet unit capable of generating magnetic force by receiving power from the power supply unit; and
Ladder including a switch for selectively applying power from the power supply to the electromagnet.

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