JP3126586U - Stepladder stepladder - Google Patents

Abstract

A stepladder for a stepladder that can be easily attached to a stepping bar of a stepladder including a ladder and can be safely operated in a stable posture.
A stepping plate 22 attached to one step bar 14 of a stepladder 12 is provided. One end portion is provided with a hook portion 18 formed in a hook shape, and the other end portion is provided with a connecting hole 16a of a holding portion that can be connected to a foot plate 22 to resist a force in a pulling and compressing direction. A support column 16 having rigidity is provided. It has a fastener 20 that can be connected to the hook portion 18 and the other upper step bar 14, and a connector 26 that can be attached to the connection hole 16 a of the column 16. A connecting portion 24 provided on the foot plate 22 and connectable to the connecting hole 16a of the support column 16 by the connecting tool 26, and an engaging portion 28 provided on the bottom surface of the foot plate 22 and engageable with the step bar 14 are provided.
[Selection] Figure 1

Description

  The present invention relates to a stepladder platform that is placed on a ladder of a stepladder including a ladder.

  In general, ladders or stepladders used for altitude work such as caring for garden trees are formed in the shape of thin bars, and there is a risk of inadvertently dropping their feet during work. For this reason, it was necessary to always pay attention to the position of the foot on the step pier during the work. Therefore, as shown in Patent Documents 1 and 2, there has been proposed a step stool that is attached to a ladder or a step ladder and can be stably operated.

  Japanese Patent Application Laid-Open No. H10-228667 discloses a stepping platform mounted on a stepping plate bottom by fitting a stepping plate support on the bottom of the tread plate to an appropriate stepping frame of a ladder or a stepladder. This step is supported by hooking a hook at the other end of the support arm, one end of which is engaged with the step plate, to a step bar positioned one above and suspending the step plate.

Further, Patent Document 2 discloses a footrest provided with a footboard that can be adjusted in the horizontal direction by a slide-type fastener that can be attached to a ladder or a stepping bar of a stepladder. The footrest of this patent document 2 also mounts a footrest on a ladder or the like by placing a footboard on a footrest of a chair or a pedestal, suspending a hook fitting fitted to the upper footstep. . And in a mounting state, the footstool is attached in the state which protruded inside the raising / lowering side surface.
JP 2005-220985 A JP 2004-183469 A

  However, in Patent Document 1, a step bar on the bottom of the tread plate is fitted and placed on an appropriate step bar such as a ladder or a stepladder, and a hanging hook is hung on a step bar located one above and suspended. And is equipped with a platform. In use in this state, when both feet are positioned near the center of the tread plate located directly above the tread bar, the tread plate is supported by the tread bar and stabilized. However, when the foot is positioned on the opposite side where the support arm is pivotally supported, there is a risk that the tread plate will rotate around the tread and the hook will come off the tread and fall.

  Further, in Patent Document 2, since the foot board is attached so as to protrude to the inside of the lifting side surface, even if it stands on the foot board, the step bar in the upper position hits the shin or calf of the foot and becomes unstable and dangerous. It was impossible to work safely.

  The present invention has been made in view of the above-described conventional technology, and provides a stepladder for a stepladder that can be easily attached to a stepped bar of a stepladder including a ladder and can be safely operated in a stable posture. For the purpose.

  This device is a step ladder for a stepladder mounted on a step ladder of a stepladder. One end portion is provided with a hook-like hook portion, and the other end portion is provided with a holding portion that can be connected to a foot plate. It is possible to attach to the support portion of the support column, the support column having rigidity to resist the force in the pulling and compressing direction, a fastener formed to be able to connect the hook part and another upper step bar, and the support unit of the support column A formed connecting tool, a connecting part provided on the foot board and connectable to the holding part of the support by the connecting tool, and an engaging part provided on the bottom surface of the foot board and engageable with the step bar. A stepladder with a stepladder.

  The angle formed by the intersection of the support column and the footboard is substantially a right angle. Moreover, the structure material of the stepladder side surface is provided with a fall prevention rod that is swingably connected via a fixture and has an attachment pin inserted into one end. Further, a safety belt may be formed by wrapping the end portions of the chain around the structural material on both sides of the tread bar on which the hook of the support column is supported.

  According to the stepladder step of the present invention, the stepladder step can be easily attached to a ladder or a step ladder, and can be operated in a stable posture. In addition, the engagement part provided on the bottom of the foot board and the hook part connected to the other upper part of the foot board prevent the foot board from coming off the foot bar regardless of which part of the foot board is worn. It is expensive.

  Hereinafter, an embodiment of the step of the present invention will be described with reference to FIGS. As shown in FIG. 1, the stepladder step 10 of this embodiment is attached to a tripod ladder or stepladder formed by combining metal pipe members made of aluminum or the like by welding or the like. It is used by being attached to 12 tread bars 14. As shown in FIGS. 2 (a) and 2 (b), the stepladder step 10 includes a pair of support columns 16 made of a metal plate-like rod. As shown in FIG. 2A, a hook portion 18 bent in an inverted U shape is provided at one end of the support column 16, and a fitting insertion hole 18 a that is a through hole is formed in the hook portion 18. . A connecting hole 16a, which is a through hole as a holding portion, is formed at the other end. As shown in FIGS. 2 (a) and 2 (b), a fastener 20 is inserted into the insertion hole 18a of the hook portion 18. A connection tool 26 that holds a metal foot plate 22 is fitted into the connection hole 16 a at the other end of the support column 16, and the connection tool 26 is inserted into an L-shaped connection part 24 at one end of the foot plate 22. Alternatively, the struts 16 and the footboards 22 are connected so as to intersect at a substantially right angle.

  On the bottom surface of the foot plate 22, plate-like engaging portions 28 that open downward in a U-shape are formed in the vicinity of the end portions in both sides, and are provided in parallel with the edges. Moreover, as shown to Fig.2 (a), the standing part 22a edged in strip | belt shape with the appropriate width is provided from the edge part of the front direction of the foot board 22 to a part of both edge part.

  Further, as shown in FIG. 3, rod-shaped fall prevention rods 30 made of metal such as aluminum are respectively attached to the structural material of the stepladder 12 positioned on the side of the step bar 14 to which the stepladder step 10 is attached. Also good. In the vicinity of the tip of the tipping prevention rod 30, a pin 30a made of metal having an appropriate length is fitted and inserted almost perpendicularly to the side surface. Further, both end portions of the safety belt 32 made of a chain having an appropriate length may be attached to the structural material of the stepladder 12 on the side of the stepping rail on which the hook portion 18 of the support column 16 is hung.

  Next, the attachment method of the step platform 10 of this embodiment is demonstrated. First, the hook portion 18 provided at the end of the column 12 is suspended from the back side of the stepladder 12 on the step bar 14 positioned directly below the top of the ascending / descending side surface of the stepladder 12. At this time, it is preferable that the position of the support column 12 suspended from the step bar 14 be a symmetrical position. Then, the pin-shaped fastener 20 is inserted from the back side of the stepladder 12 into the insertion hole 18 a formed in the hook portion 18 of the column 12. Then, it is fixed by the fastener 20 in a state where the pipe of the tread bar 14 is pinched on the inner surface of the hook portion 18. Subsequently, the foot board 22 is placed on the stepping bar 14 positioned at the same height as the lower end of the column 12, and the engaging part 28 on the bottom surface of the footing board 22 is fitted to the stepping bar 14 to The edged portion is placed at a position protruding horizontally from the ascending / descending side surface of the stepladder 12. Then, the connecting hole 16 a at the end of the support column 16 and the through hole formed in the connecting portion of the foot plate 22 are aligned, and the connection tool 26 is fitted and the foot plate 22 and each column 16 are fixed.

  Further, as shown in FIG. 3, the fall prevention rod 30 is provided with a fixture 34 attached to the structural material of the stepladder 12 positioned on the side of the step bar 14 to which the stepladder step 10 is attached. The anti-tip rod 30 is connected to the tool. Moreover, it is preferable to tie both ends of a safety belt made of a chain having an appropriate length to the structural material of the stepladder on the side of the step bar 14 to which the hook portion 18 of the support column 16 is attached.

  Next, a method for using the platform of this embodiment will be described. First, the stepladder 12 is developed and installed on the side of a garden tree or the like to be pruned. Then, the stepladder step 10 is attached to the step bar 14 at a position where the work frequency is high above the ascending / descending side surface, and the fall prevention rods 30 are attached to both sides of the ladder portion. Subsequently, the fall prevention rod 30 is expanded, the fall prevention rod 30 is brought into contact with a tree or a structure located in the vicinity of the stepladder 12, the pin 30a is inserted into an appropriate hole, and the pin 30a is not shown. Fasten and secure with a rope. Then, the worker climbs the ascending / descending side surface of the stepladder 12, stands or sits on the stepping plate 22 of the stepladder step 10 and works in an appropriate posture. At this time, the operator may wear the safety belt 32 attached to the stepladder 12 so as to be wound around the body.

  According to the stepladder step 10 of this embodiment, it can be easily attached to a ladder or a stepping bar 14 of a stepladder, and can be safely operated by a scaffold widely formed by a stepping plate 22. Then, the engaging portion 28 on the bottom surface of the foot plate 22 is fitted to the step bar to prevent displacement, and the hook portion 18 of the column 16 hung on the step bar 14 is fixed by the fastener 20 to restrict the vertical movement. The work can be performed in a stable posture no matter which part of the footboard 22 is worn. Therefore, the operator can work stably in either the opposite direction or the opposite direction with respect to the ascending / descending side surface of the stepladder 12. In addition, since the fall prevention rod 30 is fastened to the surrounding garden tree or structure to become a tension rod and the fall of the stepladder 12 is prevented, the work can be performed more safely. Further, by winding the safety belt 32 around the body of the worker standing on the footboard 22 so as to press against the lifting side, the risk of falling out of balance from the footboard 22 is prevented, and the work can be performed more safely. .

  Further, the number of the support columns 16 may be one. In this case, if the support 16 is formed so as to be connectable at the center position of the end portion of the footboard 22, the balance is good and stable.

  Note that the stepladder step of the present invention is not limited to the above-described embodiment, and the attachment of the fall-preventing rod can be appropriately selected on both the left and right sides of the stepladder or on one side. The safety belt only needs to be able to hold the worker's body so as not to deviate from the elevating side of the ladder or stepladder, so the shape and material can be selected as appropriate according to the physique of the worker and the ladder or stepladder to be used. Is.

  Moreover, the length and thickness of the support | pillar can be suitably set according to the magnitude | size of the ladder or stepladder to mount. Furthermore, the shape and material of the footboard can be appropriately changed according to the shape and size of the ladder or stepladder.

It is the schematic from the side which shows the state which mounted | wore the stepladder of one Embodiment of this invention with the stepladder. It is the side view (a) and back view (b) of the step board of this embodiment. It is a perspective view which shows the ladder with which the platform of this embodiment was attached. It is a perspective view which shows the use condition of the ladder with which the platform of this embodiment was attached.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stepladder 12 Stepladder 14 Step bar 16 Post 16a Connection hole 18 Hook part 20 Fastener 22 Footing plate 24 Connection part 26 Connection part 28 Engagement part

Claims (3)

  In a stepladder step mounted on a stepladder of a stepladder, a hook portion formed in a hook shape is provided at one end, and a holding portion that can be connected to a footboard is provided at the other end. A strut having rigidity against a force in a pulling and compressing direction, a fastener formed to be able to connect the hook part and another upper stepping bar, and a connection formed to be attachable to the holding part of the strut And a connecting portion that is provided on the footboard and that can be connected to the support portion of the support by the connecting tool, and an engaging portion that is provided on the bottom surface of the footboard and that can be engaged with the step bar. Stepladder for stepladder characterized by   The stepladder stepladder according to claim 1, wherein an angle formed by an intersection of the support column and the footboard is substantially a right angle. 3. The fall prevention rod according to claim 1, further comprising: a fall prevention rod that is swingably connected to the structural material on the side surface of the stepladder via a fixture and has an attachment pin inserted into one end. Step ladder for stepladder.

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