JP4356620B2 - Ladder fixing hardware - Google Patents

Description

  The present invention relates to a structure of a ladder fixing hardware for standing a ladder on a roof of a building, and to a structure of a ladder fixing hardware having a function of preventing damage to an eaves.

   Conventionally, in order to repair a roof of a building or clean an eaves, an operation is performed in which a worker leans against the roof and the worker goes up to the roof.

  However, as shown in FIG. 10, the eaves 82 generally has a long shape with a concave cross section opened upward in order to receive rainwater from the roof surface, and the nose plate of the eaves through the eaves hanger 81. 85 is attached. The front wall 83 of the eaves 82 is attached so as to protrude from the roof in order to receive rainwater into the eaves 82.

  Therefore, the ladder 80 is directly abutted against the front wall 83 of the eaves 82, and the load of the ladder 80 and the worker is applied to the front wall 83 via the abutting portion 84 on the top of the ladder 80. There was a problem of deformation and breakage. Furthermore, there was a possibility that the ladder 80 would slip and fall off.

  In order to solve this problem, for example, as disclosed in Japanese Utility Model Publication No. 6-9197 as Patent Document 1, the load on the ladder is directly applied to the eaves by leaning the ladder against a reinforcing hardware attached at a predetermined position. A configuration that does not take place is known.

  In Patent Document 1, as shown in FIGS. 11 and 12, an eaves rod 87 is suspended by an eaves rod suspension 89 attached to a nose plate 88 of a building. The reinforcing hardware 91 (also used as the eaves hook 89) is disposed.

  The reinforcing hardware 91 has a length M in the protruding direction from the building and a width N in the direction parallel to the nose plate 88, and the width N is set wider than the entire width of the ladder to hold the ladder. The cross-sectional shape of the reinforcing hardware 91 is such that one end (front end side) is bent upward to form a front end ear holding portion 92 and the other end (rear end side) is bent upward to bend an inner surface 93 and an outer surface 94. A rear end ear holding portion 95 is formed.

  And the ear | edge part of the both ends of the eaves hook 87 of a cross-sectional concave shape is each mounted | worn with the front-end ear holding | maintenance part 92 and the rear-end ear | edge holding | maintenance part 95 of the reinforcement hardware 91.

  When the ladder 90 is leaned against the reinforcing hardware 91 in this state, the load from the ladder 90 can be handled by the reinforcing hardware 91 without being directly applied to the eaves rod 87 main body.

Therefore, the eaves rod 87 is not deformed or broken by the load from the ladder 90, and the ladder 80 can be prevented from slipping and falling off due to the deformation or breakage of the eaves rod 87.
No. 6-9197

  However, since the position of the reinforcing hardware 91 is specified in advance in the reinforcing hardware 91 of Patent Document 1, the standing position of the ladder cannot be arbitrarily selected. Therefore, there was a problem that the ladder could not be stood at the position of the reinforcing hardware 91 depending on the work contents.

  Furthermore, since the reinforcing hardware 91 covers the entire opening of the eaves rod 87, there is a problem that the lower portion of the reinforcing hardware 91 is clogged because it is difficult to visually grasp the state of accumulation of fallen leaves and the like.

  Therefore, an object of the present invention is to provide a ladder fixing hardware capable of safely using a ladder standing on a roof at an arbitrary eaves rod suspension tool position (eave rod position).

The invention according to claim 1 is a ladder fixing hardware that fixes a ladder composed of a pair of ladder frames fixed to an eave fence suspension of the eaves , wherein the ladder fixing hardware is one of the pair of ladder frames. It is used as a pair of one ladder fixing hardware that supports one ladder frame and the other ladder fixing hardware that supports the other ladder frame. A ladder fixing portion having a recessed portion surrounded and a ladder stabilizing plate formed at the same angle as a standing angle of the ladder and holding the ladder frame without contacting the eaves, and the eaves rod suspension It is characterized by comprising an eaves rod suspension fixing portion that clamps the tool with an eaves rod suspension fixing portion main body and a clamping plate and fixes it with a fixing tool .

Since this ladder fixing hardware is a ladder fixing hardware that fixes the ladder by using the eaves eaves hanging tool of the eaves, the ladder can be stood at an arbitrary eaves hanging position (eaves position). In addition, with this ladder fixing hardware, the eaves hook suspension can be easily held by the eaves hook fixing part main body, the holding plate, and the fixing tool. Further, in this ladder fixing hardware, the ladder frame is held by protrusions at both ends of the ladder fixing portion. Further, with this ladder fixing hardware, the ladder frame can be held in surface contact by the ladder stabilizing plate .

The invention of claim 2 is the ladder fixing hardware according to claim 1 , further comprising a locking tool for locking the ladder frame on the protrusions at both ends of at least one of the ladder fixing hardware. It is a feature.

  With this ladder fixing hardware, a locking tool for locking the ladder frame is provided on the protrusions at both ends of the ladder fixing hardware, so that the ladder frame can be fixed to the ladder fixing hardware with this locking tool.

According to the first aspect of the present invention, since the ladder can be stood at any eave hanger position (eave ridge position), safety is improved and workability is improved. Since the eaves between the pair of eaves hanger is not shielded, clogging of fallen leaves and the like can be easily detected, so that clogging can be prevented. In addition, according to the present invention, the ladder fixing hardware can be easily attached to the eaves rod suspension tool by the eaves rod suspension fixing portion main body, the clamping plate, and the fixing tool, so that the ladder can be used safely. Further, according to the present invention, since the ladder frame is held by the protrusion, the ladder can be prevented from skidding, so that the safety of the ladder is improved. Further, according to the present invention, the ladder frame can be held in surface contact by the ladder stabilizing plate, so that the ladder can be leaned more safely .

According to the second aspect of the present invention, since the ladder frame can be fixed to the ladder fixing hardware by this locking tool, the ladder can be stood safely and used.

<Configuration of ladder fixing hardware>
Embodiments of the present invention will be described below with reference to FIGS.

<First Embodiment of the Present Invention>
As shown in FIGS. 1 to 3, the ladder fixing hardware 1 according to the first embodiment of the present invention uses an eaves rod suspension 4 of an eaves rod 3 attached to a nose plate 2 (a pair of ladders). A ladder fixing hardware 1 for fixing a ladder 6 (comprising a frame 5), the ladder fixing hardware 1 comprising a ladder fixing portion 7 and an eaves anchor suspension fixing portion 8 fixed to the eave anchor suspension 4. A pair of ladder frames 5 is provided correspondingly.

  The eaves hook suspension fixing part 8 includes an eaves anchor suspension part main body 9, a clamping plate 10, and a fixing tool 11 such as a bolt and a nut. Then, the eaves anchor hanging tool 4 is sandwiched between the eaves anchor fixing part main body 9 and the clamping plate 10 and is fastened by the fasteners 11 such as bolts and nuts. Is done.

<Shapes of eaves bowl 3 and eaves bowl suspension 4>
The eaves hanger 4 includes an arm 31 of a horizontal member protruding from a fixing member 30 fixed to the nose plate 2 and an oblique member 33 falling from a distal end portion 32 of the arm 31, and a distal end 34 of the oblique member 33. Is provided with a stepped portion 35.

  The tip 31 of the arm 31 is formed with a hook-shaped ear holding portion 36 that holds one ear 4 a of the eaves 3 when the eaves 3 is suspended and held.

  An ear holding portion 37 that holds the other ear portion 4 b of the eaves rod 3 is formed on the lower side of the arm 31 in the vicinity of the fixing member 30.

  The concave eaves 3 has one ear 4a held by the ear holder 36 and the other ear 4b held by the ear holder 37, and the bottom corner of the eaves 3 on the one ear 4a side. The part 4 c is securely fixed to the eaves hook suspension 4 by being fitted and held in the stepped part 35.

  When the eaves hook 3 is attached and the fixing member 30 of the eaves hook suspension 4 is fixed to the nose plate 2, the bottom 38 of the eaves hook 3 is configured to be substantially horizontal.

  Here, the ladder fixing portion 7 of the ladder fixing hardware 1 is attached so as not to directly contact one ear portion 4a of the eaves rod 3.

<Structure of ladder fixing hardware 1>
The shape of the ladder fixing portion 7 with which the ladder 6 abuts is such that the rectangular protrusions 15 are formed at both ends 14 of one side 13 of the width S as the front end portion of the rectangular (width S, length T) width S1, The other side 16 of the horizontal member 12 having a length T1 is connected to one side 18 of a rectangular swash plate 17 (drop K from the horizontal member 12) extending downward at an angle α.

  Here, the width (S2 = S−S1x2) of the concave portion 19 sandwiched between the protrusions 15 of the both end portions 14 is formed so as to be able to receive the ladder frame 5 with substantially the same width as the width G of the ladder frame 5. S2≈G.

  The shape of the eaves hook fixing part main body 9 is a horizontal rectangular plate having a width S and a length T2, and one side 20 of the width S of the eaves hanging part fixing part main body 9 is the other side of the rectangular swash plate 17. It is connected to the side 23. Further, a pair of holes 22 are provided at a distance S3 in the center of the rectangular plate at the center of the length T2 on the line 21 parallel to the side 20.

  The sandwiching plate 10 has a rectangular shape with a width U and a length V, and a pair of holes 27 are provided at a distance U1 at the center on the vertical bisector 26 with the length V of the rectangular plate.

  Then, the eaves rod suspension fixing portion 8 is clamped to the eaves rod suspension 4 by tightening the eaves rod suspension fixing portion main body 9 and the clamping plate 10 with the fasteners 11 such as bolts and nuts through the holes 22 and 27. can do. For this reason, the hole 22 of the eaves hook fixing part main body 9 and the hole 27 of the holding plate 10 have the same diameter, and the positions of the pair of holes 22 and 27 are the same, and the relationship of S3 = U1 is established.

In addition, since the eaves hanging tool fixing part main body 9 and the sandwiching plate 10 are rectangles having the same width and length,
The relationship is S = U and T2 = V.

  In addition, it is preferable to set the length of S3 and U1 so that it may be as close as possible to the eaves hook suspension 4, and the adhering effect by the fixing tool 11 improves by being close to the eaves hook suspension 4. As the angle α, an angle close to the shape of the one ear portion 4a of the eaves rod 3 is selected.

  The plate thickness of each member of the ladder fixing hardware 1 is determined in consideration of the weight of the ladder 6, the leaning angle of the ladder 6, the load of the operator, and the like.

<Operation of ladder fixing hardware>
As described above, the ladder fixing hardware 1 is fixed to the eaves rod suspension 4 of the eaves rod 3 attached to the nose plate 2, and can hold the ladder 6 (consisting of a pair of ladder frames 5). Since the standard attachment interval of the eaves rod suspension 4 is 600 mm, which is the same as the width of the standard ladder 6 (the distance between the centers of the pair of ladder frames 5), a pair of ladder fixing hardware 1 having the same structure is used. It can be used to lean against any eave hanger 4 position.

  Furthermore, since the ladder fixing portion 7 of the ladder fixing hardware 1 is attached so as not to directly contact one of the ear portions 4a of the eaves rod 3, the ladder 6 can be used safely without damaging the eaves rod 3.

  Since the ladder frame 5 is held by the protrusions 15, the ladder 6 can be prevented from slipping and safety is improved.

<Second Embodiment of the Present Invention>
As shown in FIG. 4, in the second embodiment of the present invention, a pair of elongated holes 40 are provided in the eaves hook suspension fixing body 9 in a direction perpendicular to the ladder. In addition, about the structure same as the structure of the ladder fixing hardware 1 shown in FIG. 3, the same code | symbol is attached | subjected to drawing and the overlapping description is abbreviate | omitted.

  The shape of the eaves hook fixing portion main body 9 is a horizontal rectangular plate having a width S and a length T3, and a pair of a central portion on a line 21 parallel to the side 20 at the center of the length T3 of the rectangular plate. A long hole 40 is provided at a distance S3. The long hole 40 has a length T4 and is provided to the vicinity of one side 20 and the other side 41 of the rectangular plate of the eaves hook fixing part main body 9. The width 40a of the long hole 40 is substantially equal to the bolt diameter of the fixing tool 11. The same.

  The ladder fixing portion 7 and the sandwiching plate 10 have the same structure as the ladder fixing portion 7 and the sandwiching plate 10 shown in FIG.

  The ladder fixing hardware 1 is suspended from the eaves by tightening the eaves hanger fixing part main body 9 and the holding plate 10 with the fixing tool 11 such as a bolt and a nut through the long hole 40 and the hole 27 of the holding plate 10. It can be held between the tools 4.

Here, the attachment distances of the pair of long holes 40 and the holes 27 are the same,
The relationship is S3 = U1.

Moreover, since the width of the eaves hook fixing part main body 9 and the holding plate 10 is the same, but the length is different,
S = U, T3> V.

  With this ladder fixing hardware 1, the position of fixing the ladder fixing hardware 1 can be adjusted in the direction perpendicular to the ladder 6 by the long hole 40 (if necessary). Accordingly, it is possible to easily shift the fixing position according to the above, and the ladder fixing hardware 1 can be mounted without directly contacting the eaves 3. Therefore, the ladder 6 can be used safely without the eaves bowl 3 being damaged.

<Third Embodiment of the Present Invention>
As shown in FIGS. 5A and 5B, in the third embodiment of the present invention, the width S4 of one ladder fixing hardware 1a is formed wider than the width S of the other ladder fixing hardware 1. (S4> S), a long hole 51 is provided in a direction parallel to the ladder 6 in the eaves hook fixing part main body 50 of one ladder fixing hardware 1a.

  In addition, about the structure same as the structure of the ladder fixing hardware 1 shown in FIG. 3, the same code | symbol is attached | subjected to drawing and the overlapping description is abbreviate | omitted.

  The shape of the eaves hook fixing portion main body 50 is a horizontal rectangular plate having a width S4 and a length T2, and a long hole is formed at the center of the rectangular plate length T2 on the line 21 parallel to the side 20. 51 is provided. The length S5 of the long hole 51 is provided up to the vicinity of the width S4 of the eaves hook suspension fixing part main body 50, and the width 51a of the long hole 51 is formed to be substantially the same width as the bolt diameter of the fixing tool 11.

  The ladder fixing portion 7 has the same structure as that of the ladder fixing portion 7 shown in FIG. 3 except that the width of the ladder fixing portion 7 is the same as the width S4 of the eaves hook suspension fixing portion main body 50. The sandwiching plate 10 has the same structure as the sandwiching plate 10 shown in FIG.

With this ladder fixing hardware 1a, the width S4 of one ladder fixing hardware 1a is formed wider than the width S of the other ladder fixing hardware 1 (S4> S) and the ladder is formed by the long hole 51. The position of the fixing hardware 1a can be adjusted in a direction parallel to the ladder 6.
Therefore, since a margin can be secured for the usable width 6a of the ladder 6, the ladder 6 having a width that is wider or narrower than the mounting pitch H of the eaves rod suspension 4 can be leaned within this margin range, and the eaves are damaged. The ladder can be used safely without doing so.

  In addition, the same effect is acquired even if the attachment pitch H of the eaves hook hanging tool 4 changes relatively instead of the ladder width.

<Fourth Embodiment of the Present Invention>
As shown in FIGS. 6 (a) and 6 (b), according to the fourth embodiment of the present invention, the ladder fixing hardware 59 shown in FIGS. 5 (a) and 5 (b) has one ladder fixing hardware 1a and the other. The ladder fixing parts 7 and the eaves hook suspension fixing part main body 50 of the ladder fixing hardware 1 are combined.

  At this time, the protrusion 15 of one (wide) ladder fixing hardware 1 a is omitted, and the ladder 6 holds the two side surfaces 5 a and 5 b of the one ladder frame 5 by the pair of protrusions 15. One protrusion 15 is provided corresponding to the outer side surface 5 c of the other ladder frame 5.

  With this ladder fixing hardware 59, a margin can be secured in the width 6a of the usable ladder 6, and within this margin, the ladder 6 having a width or width wider than the mounting pitch H of the eaves rod suspension 4 is leaned. Can do. Further, since the fixing position can be adjusted in the direction parallel to the ladder 6 by the long hole 51, it is possible to cope with a change in the mounting pitch H of the eaves rod suspension 4.

  The strength of the ladder fixing part 7 and the eaves hook fixing part main body 50 of the one ladder fixing hardware 1a and the other ladder fixing hardware 1 is combined to increase the strength, so that the stability when the ladder 6 is leaned is improved. improves. Therefore, the ladder can be used safely without damaging the eaves basket.

<Fifth Embodiment of the Present Invention>
As shown in FIGS. 7A and 7B, in the fifth embodiment of the present invention, one side 13 of the horizontal member 12 that is in contact with the central concave portion 19 excluding the protrusions 15 on both ends 14 of the ladder fixing hardware 60 is shown. The ladder stabilizing plate 61 (rectangular shape having a width S2 and a length T3) is provided at the same angle as the standing angle β (for example, 75 degrees) of the ladder 6.

  In addition, about the structure same as the structure of the ladder fixing hardware 1 shown in FIG. 3, the same code | symbol is attached | subjected to drawing and the overlapping description is abbreviate | omitted.

  With this ladder fixing hardware 60, the side 5d corresponding to the ladder fixing hardware 60 of the ladder frame 5 can be held in surface contact by the ladder stabilizing plate 61, so that the ladder 6 can be stood more stably.

<Sixth Embodiment of the Present Invention>
As shown in FIGS. 8A, 8B, and 8C, in the sixth embodiment of the present invention, the ladder frame 5 is engaged with the protrusions 15 at both ends 14 of the ladder fixing hardware 1. A stop 63 is provided.

  In addition, about the structure same as the structure of the ladder fixing hardware 1 shown in FIG. 3, the same code | symbol is attached | subjected to drawing and the overlapping description is abbreviate | omitted.

  This locking tool 63 is formed in a rectangular concave shape having a width S6 and a length T4 using a round bar such as a thick wire, and the locking portion 65 having a length P is formed in a rectangular concave shape from both rectangular concave end portions 64. The surface 66 extends at a substantially right angle.

  The protrusions 15 are provided with holes 62 each having a diameter substantially the same as the diameter of the locking part 65 of the locking tool 63, and the ladder frame 5 is attached to the ladder fixing hardware 1 by inserting the locking part 65 into the hole 62. Can stick. Note that the length P of the locking portion 65 is set to a length that does not easily fall out of the hole 62, and preferably a bending prevention effect is obtained by bending the tip.

  The width S6 and the length T4 of the locking tool 63 are set to dimensions that allow the ladder frame 5 to be stably held between the locking tool 63 and the recess 19.

  In this ladder fixing hardware 1, since the locking tool 63 that locks the ladder frame 5 is provided on the protrusions 15 of the both ends 14, the ladder frame 5 can be fixed to the ladder fixing hardware 1, thereby improving safety. To do.

<Seventh embodiment of the present invention>
As shown in FIG. 9, in the seventh embodiment of the present invention, a flexible engagement such as a string or a thin wire is used instead of the locking tool 63 made of a round bar such as a thick wire in FIG. A stop 67 is used.

  With this ladder fixing hardware 1, since the locking tool 67 has flexibility, the ladder frame 5 can be fixed to the ladder fixing hardware 1 without rattling. Therefore, the ladder frame 5 can be more stably fixed to the ladder fixing hardware 1, so that safety is improved.

  As mentioned above, although embodiment of this invention was described based on drawing, all said Example showed an example of this invention, and it cannot be overemphasized that this invention should not be limited to these. Absent.

  For example, if a stopper function such as a toggle pin is provided at the tip of the locking portion 65 of the locking tool 63 in FIG. 8C, the effect of retaining is obtained, so that stability and safety are further improved.

It is a perspective view in the 1st Embodiment of this invention. It is a side view which shows the relationship between the ladder fixing hardware and the ladder which were attached to the eaves hook suspension of the eaves bowl in the 1st Embodiment of this invention. (A) is a side view, (b) is an AA arrow view of FIG. 3 (a), and (c) is B of FIG. 3 (a) of the ladder fixing hardware according to the first embodiment of the present invention. FIG. It is a perspective view of the hardware for ladder fixation in the 2nd Embodiment of the present invention. (A) is a perspective view, (b) is a detailed perspective view of "C" of Fig.5 (a) of the metal fitting for ladder fixation in the 3rd Embodiment of this invention. FIG. 7A is a perspective view, and FIG. 6B is a detailed perspective view of “D” in FIG. 6A of a ladder fixing hardware according to a fourth embodiment of the present invention. (A) is a perspective view and (b) is an EE arrow view of the ladder fixing hardware in the 5th Embodiment of this invention. (A) is a perspective view, (b) is a "F" detailed perspective view, and (c) is a "G" detailed perspective view of a ladder fixing hardware according to a sixth embodiment of the present invention. It is a perspective view of the ladder fixing metal object in the 7th Embodiment of this invention. It is a side view which shows the relationship between the ladder and the eaves wall when the ladder was leaned against the roof conventionally. It is a side view which shows the state when a ladder is leaned against the conventional eaves rod suspension using a reinforcement metal fitting. It is a perspective view which shows the detail of the reinforcement metal fitting in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ladder fixing hardware 2 Nose board 3 eaves 4 eaves hanger 5 Ladder frame 6 Ladder 7 Ladder fixing part 8 Eave eaves hanger fixing part 9 Eave eaves hanger fixing part main body 10 Holding plate 11 Fixing tool 12 Horizontal member 13 Side 14 Both ends 15 Projection

Claims (2)

Ladder fixing hardware that fixes a ladder made of a pair of ladder frames fixed to the eaves eaves hanging tool of the eaves ,
The ladder fixing hardware is used as a pair of one ladder fixing hardware that supports one ladder frame and the other ladder fixing hardware that supports the other ladder frame of the pair of ladder frames ,
The ladder fixing hardware is
A concave portion surrounded by protrusions at both ends for receiving and guiding the ladder frame, and a ladder stabilizing plate that is formed at the same angle as a standing angle of the ladder and holds the ladder frame without contacting the eaves A ladder fixing part having
A ladder fixing hardware characterized by comprising: an eaves anchor suspension part fixing part main body and an eaves anchor suspension part fixing part and fixing with an anchor. The ladder fixing hardware according to claim 1 , further comprising: a locking tool that locks the ladder frame on the protrusions at both ends of at least one of the ladder fixing hardwares. hardware.

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