KR200486641Y1 - Safety foothold for ladder - Google Patents

Abstract

The present invention relates to a safety footrest for a ladder, and more particularly, when a worker performs a work using a ladder, a safety footrest is fixedly coupled to and separated from a footrest installed on a ladder according to need, In addition, the ladder can be folded and stored conveniently in a state in which the safety footrest is coupled to the footrest.
The present invention includes a lock 130 that is moved up and down while being guided by a slider 150; A fixed bracket 120 installed on the foot plate 231 of the ladder 200 for locking and unlocking according to a rising and falling state of the lock 130; A hinge bracket 140 to which the hinge 160 is rotatably coupled to the fixed bracket 120; And a hinge bracket 140 fixedly connected to the front and rear ends of the side portion of the ladder 200. The fixing bracket 120 includes a hinge bracket 140, A contact portion 121 having a bottom surface in contact with the upper surface is formed with a penetration hole 121a through which the engagement protrusion 131 of the lock 130 is inserted and extracted, 121 is formed by bending a fitting portion 122 to be fitted in the foot plate 231 of the ladder 200. [

Description

{Safety foothold for ladder}

The present invention relates to a safety footrest for a ladder, and more particularly, when a worker performs a work using a ladder, a safety footrest is fixedly coupled to and separated from a footrest installed on a ladder according to need, And more particularly, to a safety foot for a ladder that allows a ladder to be folded and stored and transported even when the footrest is coupled to the safety footrest.

Generally, the ladder is a device which is constructed so as to be able to move a long horizontal support bar by stepping on two long support bars, and then moving the horizontal bar upwards by providing a plurality of horizontal bars serving as a support of a short length therebetween.

The ladder is mainly used as a tool in a work site where work has to be performed in a high place.

The material of the ladder is such that the metal such as wood or aluminum is used so as to efficiently support the load applied when the user steps on the foot, and to have various functions.

The ladder is divided into a single ladder having a plurality of horizontal bars arranged at equal intervals between a pair of supports as described above, and an A-type ladder provided with the single ladder facing each other and foldably around the upper portion .

Of these, the type ladder will be described with reference to the attached type ladder of FIG. 1, which is capable of adjusting the height.

Since the A-type ladder can stand on the ground even if there is no supporting structure compared with a single ladder, there is no restriction on the use space, and there is an advantage that the worker can perform the work simultaneously on both sides.

Type ladder includes a bottom plate 230 having a foot plate 231 formed at a predetermined interval and a connecting bracket 210 hinging the bottom plate 230 and the bottom plate 230. The connecting bracket 210 is hinge- And a foot plate 221 provided at a predetermined distance between the top 220 and the top 220. The bottom 220 is provided with a plurality of bottom plates 221 spaced apart from each other.

The ladder 230 is coupled to a top 220 provided with a foot plate 221 so that the length of the bottom plate 230 can be changed by inserting and discharging the bottom plate 230 with the foot plate 231, The upper portion of the inner bar 230 installed to be deformed in length is hingedly coupled to the connection bracket 210 in a foldable manner.

When the ladder is to be used, the inner bar 230, the inner bar 230, the outer bar 220 and the outer bar 220, which are hinged to the connecting bracket 210, And the foot plates 221 and 231 installed on the outer surface 220 can be moved up and down while the user steps on the foot.

When the ladder is lifted and stored or transported, the connecting bracket 210 is folded and the inner bar 230 hinged to the connecting bracket 210 is inserted into the outer casing 220 So that they can be carried and stored.

However, since the width of the foot plate 231 installed on the inner bar 230 or the foot plate 221 installed on the outer surface 220 is small when the user carries out the operation using the above-mentioned type ladder, the operator can not perform the operation with stability Of course, there is a problem that the worker feels a psychological burden, resulting in a decrease in workability and a risk of occurrence of various safety accidents such as a fall.

Accordingly, as disclosed in Korean Utility Model No. 20-2013-0000294, a plate and a work space are provided. And a reinforcing member for reinforcing the plate by connecting the upper end of the coupling plate and the other end of the plate to each other, When the ladder is used for the work, the worker can go up to the plate of the safety foot plate to perform the work.

However, in the safety footrest constructed as described above, since the hook provided on the upper end of the coupling frame is hooked on the ladder so that the ladder is installed on the ladder, when the ladder is moved to a position requiring work, There is an inconvenience that it is necessary to separate the foot plate from the ladder and carry it separately while holding the ladder.

In addition, there has been a problem in that the safety footrest is often separated from the ladder and often lost during storage and transportation.

Korean Utility Model No. 20-2013-0000294 (public date: January 14, 2013)

It is an object of the present invention to provide a safety footrest which can be freely detachably assembled to a footrest of a ladder and can be used while a safety footrest is assembled to the footrest of the ladder, So that it can be freely folded or adjusted while its length is adjusted.

In order to accomplish the above object, the present invention provides a locking device comprising: a lock (130) guided by a slider (150) to move up and down; A fixed bracket 120 installed on the foot plate 231 of the ladder 200 for locking and unlocking according to a rising and falling state of the lock 130; A hinge bracket 140 to which the hinge 160 is rotatably coupled to the fixed bracket 120; And a hinge bracket 140 fixedly coupled to the front and rear ends of the side portion.

The fixed bracket 120 is provided with a draw-in hole 121a through which the latching protrusion 131 of the lock 130 is drawn in and out from the contact portion 121 where the bottom surface of the fixed bracket 120 contacts the upper surface of the ladder 200, And a fitting portion 122 to be fitted to the foot plate 231 of the ladder 200 is formed at a lower portion of one side of the contact portion 121 through which the pull-in hole 121a is penetrated.

The ladder safety footrest of this invention can be conveniently and safely operated at the height required by the operator while the ladder is used for the worker to securely attach and detach the safety footrest to the footrest installed on the ladder according to the need And a ladder can be folded and stored conveniently in a state in which the safety footrest is engaged with the footrest of the ladder.

1 is a front view showing a general length type variable type ladder
Fig. 2 is an exploded perspective view showing a configuration of a safety footrest for a ladder according to the present invention
Fig. 3 is a perspective view of the ladder safety footrest according to the present invention,
Fig. 4 is a state diagram of the use of the safety footrest for the ladder according to the present invention. Fig. 5 is a view showing the state of use in which the safety footrest is engaged with the footrest and the ladder is folded
FIG. 6 is a view showing the state of use of the ladder according to the present invention, in which the safety footrest is coupled to the footrest,

Hereinafter, the technical structure of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front view showing a general length type variable type ladder, FIG. 2 is an exploded perspective view showing a configuration of a safety ladder for a ladder according to the present invention, and FIG. 3 shows a state in which the safety ladder for a ladder, FIG. 4 is a view showing the state of use of the safety foot for a ladder according to the present invention, FIG. 5 is a view showing a state in which the safety foot is coupled to the foot, 6 is a state diagram showing a ladder in which the safety footrest according to the present invention is coupled to a footrest.

As shown in Figs. 2, 3 and 4, the ladder safety foot of the present invention includes a lock 130 that is raised and lowered while being guided by a slider 150, A fixed bracket 120 installed on the foot plate 231 of the ladder 200 and a hinge bracket 140 hinged to the fixed bracket 120 so that the locking and unlocking can be performed, And a plate-like plate 110 in which the hinge brackets 140 are fixedly coupled to the front and rear ends of the side portions, respectively.

The fixed bracket 120 is provided with a draw-in hole 121a through which the latching protrusion 131 of the lock 130 is drawn in and out from the contact portion 121 where the bottom surface of the fixed bracket 120 contacts the upper surface of the ladder 200, And a fitting portion 122 to be fitted to the foot plate 231 of the ladder 200 is bent at a lower portion of one side of the contact portion 121 formed by the penetration hole 121a.

The slider 150 is installed on the outer side of the fixing bracket 120 formed by bending the fitting part 122 to which the foot plate 231 of the ladder 200 is inserted, The locking projection 131 of the lock 130 to be moved up and down while being guided by the contact portion 121 is installed to be pulled out through the pullout hole 121a formed in the contact portion 121. [

A hinge bracket 140 is rotatably coupled to a hinge 160 at the front and rear portions of the contact portion 121 of the fixed bracket 120 provided with the lock 130. The hinge bracket 140, Are respectively fixedly coupled to the front and rear ends of one side of the flat plate-like plate 110, so that the flat plate 110 can be folded as needed.

As a result, as shown in FIG. 4, the connection bracket 210 is used to extend the length of the add-on ladder 200, which is foldably connected to the hinged end, The slider 131 of the lock 130 is pulled through the pull-in hole 121a formed in the contact portion 121 after fitting the fitting portion 122 of the fixing bracket 120 to the foot plate 231 of the slider 230, (150).

At this time, the locking protrusion 131 of the lock 130, which is lowered while being guided by the slider 150, passes through the contact portion 121 through the pull-in hole 121a and is inserted into the foot plate 231 of the inner bar 230, The fixing bracket 120 is held by the foot plate 231 and the hinge 160 is fastened to the fixing bracket 120 by fixing the locking bracket 120 to the foot plate 231 by the engagement of the locking protrusion 131. [ The operator can perform the work while keeping the flat plate 110 in which the coupled hinge brackets 140 are fixedly coupled to the front and rear ends of the one side portion.

5, when the plate-shaped plate 110 is unfolded as described above, the ladder 200 is used when it is folded and stored or moved to another working place as shown in FIG. A hinge 160 is rotatably coupled to the front and rear portions of the contact portion 121 of the fixed bracket 120 when the user lowering the other side plate 110 to which the hinge bracket 140 is not coupled is lifted upward The hinged bracket 140 is pivoted so that the safety footplate 100 is folded in a state of being coupled to the ladder 200.

6, when the safety footrest 100 is coupled to the ladder 200 as described above, the ladder 200 is pulled into the inside of the cover 220 as shown in FIG. 6 Type ladder 200 without being affected by the safety footplate 100, the operator can freely change the length of the ladder 200 according to need and use and store the variable type ladder 200.

100: Safety footrest
110: Plate
120: Fixed bracket
121:
121a: Entering and leaving
122:
130: Locke
131:
140: Hinge Bracket
150: Slider
160: Hinge

Claims (2)

delete A lock 130 for moving up and down while being guided by the slider 150; A fixed bracket 120 installed on the foot plate 231 of the ladder 200 for locking and unlocking according to a rising and falling state of the lock 130; A hinge bracket 140 to which the hinge 160 is rotatably coupled to the fixed bracket 120; And a hinge bracket 140 fixedly connected to the front and rear ends of the side portion of the ladder 200. The fixing bracket 120 includes a hinge bracket 140, A contact portion 121 having a bottom surface in contact with the upper surface is formed with a penetration hole 121a through which the engagement protrusion 131 of the lock 130 is inserted and extracted, Wherein a fitting portion (122) to be fitted to the foot plate (231) of the ladder (200) is formed at a lower portion of one side of the foot plate (121).

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