JP2001090457A - Ladder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ladder which does not damage a portion of a building when it is rested on the building. SOLUTION: There is provided a ladder 1 consisting of a ladder main body 2 and an attachment 3 attached onto a rear side of an upper end of the main body. The attachment 3 is comprised of an attaching portion 21 detachably attached to the ladder main body 2, an interval holding portion 22 having its front end supported by the attaching portion 21, and forming a predetermined interval between its front end and a roof R on which the ladder 1 is rested, and an abutting portion 23 attached to a rear end of the interval holding portion 22 in a manner being rotatable on a horizontal shaft and being abutted on the roof R.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a ladder.

[0002]

2. Description of the Related Art When working on a roof using a ladder, the upper end of the ladder is brought into contact with the roof eaves, and when working under the eaves, the upper end of the ladder is used. Is hit on the wall.

[0003]

When the conventional ladder is used, the upper end of the ladder hits a gutter provided on the roof eaves and damages it, or the upper end of the ladder hits a wall and damages it. There was a problem. Also,
In the conventional ladder, there is also a problem that the lower end of the pillar is unstable because it only touches the ground.

[0004] It is an object of the present invention to provide a ladder which does not damage a part of the building when leaning against the building.

It is another object of the present invention to provide a ladder which can be stably installed.

[0006]

A ladder according to the present invention includes a ladder main body and an attachment provided at a rear side of an upper end portion of the ladder main body, and the attachment is detachably attached to the ladder main body. A mounting portion, a space holding portion that forms a predetermined space between the building portion where the front end portion is supported by the mounting portion and the ladder is leaned,
A contact portion is attached to the rear end of the interval holding portion so as to be rotatable around a horizontal axis and is brought into contact with the building portion.

According to the ladder of the present invention, when the ladder is leaned against a building, an interval corresponding to the interval holding portion is secured between the building portion and the ladder main body, so that the gutter projecting from the roof eaves is damaged. And the corner of the upper end of the ladder body does not hit the wall and damage it. Also,
Since the abutment pivots around the horizontal axis, the abutment can be applied along the building even if the part of the building it leans against is a roof or wall, or if the angle of inclination of the ladder body changes. , The ladder is installed stably.

[0008] The mounting portion includes, for example, left and right vertical members abutted on the left and right columns of the ladder main body, upper and lower horizontal members suspended between the left and right vertical members, and clamps respectively attached to the upper and lower sides of each vertical member. The clamp comprises a first and a second vertical member having a support of the ladder body and left and right vertical members sandwiched from both left and right sides and a rear end fixed to the vertical member, and a front end of one of the vertical members. It is provided with a bolt rotatably supported and having a screw portion fitted into a notch provided in the other vertical member, and a nut screwed to the tip of the bolt. In this way, the clamp attaches the attachment to the ladder main body easily and detachably by sandwiching the support of the ladder main body with each clamp, turning the bolt, inserting the vicinity of the tip into the notch, and tightening the nut. be able to.

[0009] The spacing member is, for example, an intermediate horizontal member for connecting a left-right rotating member whose front end is rotatable about a horizontal axis to an upper cross member of the mounting portion and an intermediate portion of the left-right rotating member. A member and an intermediate rotating member having a lower end portion rotatably mounted on the lower cross member of the mounting portion so as to be rotatable around the horizontal axis and an upper end portion rotatably mounted on the intermediate horizontal member so as to be rotatable around the horizontal axis. It is assumed that. Further, the interval holding portion includes a left-right rotating member having a front end portion rotatably mounted on a lower horizontal member of the mounting portion so as to be rotatable around a horizontal axis, and a rear horizontal member connecting the rear ends of the left-right rotating members. An intermediate turning member having an upper end portion rotatably mounted on the upper cross member of the mounting portion so as to be rotatable about a horizontal axis, and a lower end portion rotatably mounted on the rear horizontal member about the horizontal axis. Sometimes it is. The former interval holding portion is suitable when the inclination angle of the roof is relatively large, and the latter interval holding portion is suitable when the inclination angle of the roof is relatively small.

Further, both the horizontal member of the mounting portion and the horizontal member of the interval holding portion are circular in cross section, and are provided at the front end of the left and right rotating member, the upper end of the intermediate rotating member, and the lower end of the intermediate rotating member. Preferably, a hook portion having a semi-cylindrical inner peripheral surface rotatably fitted to the corresponding cross member and the horizontal member is provided. In this way, the above two types of space holding parts can be formed of the same member and can be obtained only by changing the mounting method, and the space holding can be performed according to the inclination angle and shape of the building part on which the ladder stands. Since the whole part is rotated and the attachment is stabilized by the intermediate rotation member, the ladder can be stably installed regardless of the inclination angle and shape of the building portion on which the ladder is leaned.

It is preferable that the contact portions are attached to the left and right sides of the interval holding portion, respectively, so that the left and right intervals of the contact portions can be adjusted. In order to make such a configuration, for example, the interval holding portion has a rear horizontal member, and the rear horizontal member is a large-diameter pipe and a small-diameter pipe whose ends are slidably fitted into the large-diameter pipe. A plurality of holes are provided in one of the pipes at intervals in the axial direction, and one of the plurality of holes is aligned with a hole provided in the other pipe, and both of the holes are pin- or pipe-clipped. All you have to do is join the pipes. In this way, the distance between the contact portions can be adjusted according to the size of the tile or the distance between the tile bars of the tin roof, and the contact portion can be applied to a stable position without damaging the roof. .

A grounding member for increasing a grounding area is attached to a lower end of the ladder body by a clamp, and the clamp is fixed to the grounding member and has a U-shaped frame into which a column portion of the ladder body is fitted. A body and a bolt rotatably supported by an opening edge of one of the right and left side walls of the frame body and having a threaded portion inserted into a notch provided in the opening edge of the other side wall; It is preferable to include an annular pressing member fitted to the intermediate portion of the bolt and brought into contact with the column of the ladder main body, and a nut screwed to the tip of the bolt. In this way, the grounding member can be easily and detachably attached to the ladder main body,
Thereby, the ladder can be stably installed.

In addition, a stabilizer is attached to a lower portion of the ladder body by a clamp. The clamp is fixed to the stabilizer and has a U-shaped frame in which a column portion of the ladder body is fitted. A bolt rotatably supported by an opening edge of one of the right and left side walls and having a threaded portion inserted into a notch provided at an opening edge of the other side wall; It is preferable to include an annular pressing member which is provided and is brought into contact with a support of the ladder main body, and a nut which is screwed to a tip portion of the bolt. In this way, the stabilizer can be easily and detachably attached to the ladder body,
Thereby, the ladder can be stably installed.

The bolt of each of the clamps is an eyebolt, and its ring-shaped head is preferably supported by a bracket provided on the vertical member so as to be rotatable around a vertical axis. Preferably, it is a wing nut.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In this description, "before"
The left in FIG. 2 and the rear refer to the right in FIG. Also, left and right shall be referred to backward.

FIGS. 1 to 10 show a first embodiment of a ladder according to the present invention. This ladder (1) is suitable for leaning on a roof (R) provided with a gutter (G) overhanging, and is provided behind the ladder main body (2) and the upper end of the ladder main body (2). Attachment (3) and left and right grounding members (4) provided at the lower end of the ladder body (2) to increase the grounding area
And a left and right stabilizer (5) provided below the ladder body (2) to prevent the ladder (1) from falling down.

The ladder body (2) comprises a lower ladder (11) and an upper ladder (1).
2) and, in use, prevent the upper ladder (12) from moving downward relative to the lower ladder (11), and from this state the upper ladder (12).
And a lock / unlock device (13) for permitting the movement of the device upward by a predetermined amount or more. Lower ladder
The strut (11a) of (11) has a U-shaped cross section with the open side facing inward, and the strut (12a) of the upper ladder (12) has a U-shaped cross section with the open side facing outward. An upper ladder (12) is slidably connected to the lower ladder (11) by overlapping the latter front wall on the front side of the former rear wall. Although the illustrated ladder main body (2) is a telescopic type called a double ladder, the ladder main body may be a series of ladders that are not telescopic.

The attachment (3) comprises a mounting portion (21) detachably attached to the ladder main body (2), and a roof (R) on which the ladder (1) is supported by the mounting portion (21) with its front end supported. An interval holding section (22) for forming a predetermined interval between the
(22) A contact portion (23) attached to the rear end portion so as to be rotatable around a horizontal axis and brought into contact with the roof (R).

The right and left vertical members (31) each having a rectangular cross section are provided.
And upper and lower cross members (32) and (33) having a circular cross section which are held between left and right vertical members (31), and clamps (34) attached to the upper and lower sides of each vertical member (31). The distance between the inner surfaces of the left and right longitudinal members (31) is equal to the distance between the inner surfaces of the left and right columns (12a) of the upper ladder (12), and the front wall of the left and right longitudinal members (31) is the upper ladder ( It is in contact with the rear wall of the left and right columns (12a) of 12). The space between the upper and lower cross members (32) and (33) is equal to the space between the steps of the upper ladder (12). Left and right vertical members (31) and upper and lower horizontal members
(32) (33) means the upper and lower cross members (32) and (33)
Are joined by welding.

As shown in detail in FIG. 3, each of the clamps (34) has a column of the upper ladder (12) with its front and rear ends protruding.
(12a) and first and second plate-like vertical members (36) and (37) sandwiching the left and right vertical members (31) from the left and right sides and having rear ends fixed to the vertical members (31); A notch (3) provided in the second vertical member (37) rotatably supported by the front end of the member (36).
7a) Mounting bolt (38) with threaded part
And a wing nut (39) screwed to the external thread of the mounting bolt (38). The rear surface of the longitudinal member (31) and the rear end surfaces of the first and second vertical members (36) and (37) are flush with each other,
A spacer (40) is provided between the outer surface of the vertical member (31) and the inner surface of the first vertical member (36) according to the width of the vertical member (31) being smaller than the left and right width of the column (12a). ) Is interposed. 1st vertical member
(36), spacer (40), vertical member (31) and second vertical member (37)
Nuts (42) to bolts (41) that penetrate these from outside
Are joined by being tightened. The mounting bolt (38) is an eyebolt having a ring-shaped head (38a), and is supported by a bracket (43) fixed to the outside of the front end of the first vertical member (36). The bracket (43) is composed of a pair of upper and lower rectangular plates, and the head (38a) of the mounting bolt (38) inserted between these rectangular plates has a loose middle portion between the bolts (44) penetrating both plates. By being inserted, the mounting bolt (38) is rotatable about an axis parallel to the longitudinal member (31). At the front end of the first vertical member (36), a mounting bolt (38)
A notch (36a) is provided to prevent interference when turning. Therefore, from the state shown by the chain line in FIG.
By simply turning the mounting bolt (38) and tightening the wing nut (39), the clamp (34) is connected to the support (12a) of the ladder body (2).
Can be fixed. The notch (37a) provided in the second vertical member (37) is formed deeper than the notch (36a) provided in the first vertical member (36), and the mounting bolt (38)
Is abutted against the front wall of the column (12a), and this is
The attachment (3) is firmly held by the ladder body (2) by the tightening force of (39).

As shown in detail in FIG. 4, the interval holding portion (22) is a left-right rotating member having a front end mounted on an upper cross member (32) of the mounting portion (21) so as to be rotatable around a horizontal axis. (51) and an intermediate horizontal member (52) for connecting intermediate portions of the left and right rotating members (51).
And an intermediate rotating member (53) passed between a lower cross member (33) of the mounting portion (21) and the intermediate horizontal member (52), and rear ends of the left and right rotating members (51). And a rear horizontal member (54) having left and right extensions connected to each other and protruding left and right beyond the left and right rotating member (51).

Each of the above-mentioned constituent members (51) and (52) of the spacing member (22)
(53) (54), like the upper and lower cross members (32) (33) of the mounting part (21),
It is formed by a pipe with a circular cross section,
A hook (55) fitted to the upper cross member (32) of the mounting part (21) is provided at a front end of the mounting part (21), and a mounting part ( A hook portion (56) fitted to the lower cross member (33) of the (21) is provided, and a hook portion (57) fitted to the intermediate horizontal member (52) is provided at an upper end portion of the intermediate rotating member (53).
Is provided. Each hook portion (55), (56), (57) has a semicircular inner peripheral surface so as to be fitted to a cylindrical pipe and to be able to move around its axis, and has a corresponding member (32 ) (33) and (52) are fitted from above. The left and right ends of the intermediate horizontal member (52) and the left and right rotating member (51) and the rear ends of the left and right rotating members (51) and the rear horizontal member (54) are connected via a pipe joint (58). I have.

The contact portion (23) is attached to the end of the left and right extension portion of the rear horizontal member (54) of the spacing member (22) via a joint (61) provided in a downwardly projecting shape. .

As shown in FIGS. 5 and 6, the rear horizontal member (54) has a central pipe (64) and an inner end slidably fitted into the left and right ends of the central pipe (64). Left and right pipes (65), and right and left pipe clips (66) connecting the two pipes (64) and (65). Each of the left and right ends of the central pipe (64) has one radial through hole (67), and the left and right pipes (65) can be loosely fitted into the central pipe (64). Inner half (65a) made as small as
In addition, two radial through holes (68) are spaced apart in the axial direction. Pipe clip (66), central pipe (64)
And a C-shaped ring portion (66b) having an inner diameter slightly smaller than the diameter of the central pipe (64). The C-shaped ring portion (66b) has elasticity and can be forcibly fitted over the central pipe (64), and after being fitted over, is held on the central pipe (64) by elastic force. And the shaft part (66a) of the pipe clip (66) is
4) through hole (67) and one of the left and right pipes (65)
8), the central pipe (64) and the left and right pipes (65) are connected. As shown by the dashed line in FIG. 5, when the contact portion (23) hits the convex portion of the roof (R), slide both or either of the left and right pipes (65) to the left or right (in the figure, the right side). Slide the pipe to the right) so that the abutment (23) hits the relatively flat recess of the roof (R), and then connect both pipes (64) and (65) with the pipe clip (66) can do. Thus, the abutment
The left-right distance of (23) can be adjusted. The configuration for adjusting the left-right spacing of the contact portion (23) may be other than the above.

The contact portion (23) has a cushion material (23a) on its surface.
Is affixed to a rectangular plate-like body, and a bracket (62) composed of a pair of rectangular plates is fixed to the back surface thereof.
Then, an intermediate portion of a bolt (63) penetrating through both the rectangular plates is loosely inserted into a bolt insertion hole of the joint (61) inserted between these rectangular plates. The axis of the bolt (63) is
Is parallel to the axis of the rear horizontal member (54), the abutment (23)
Rear horizontal member (54) according to the axis of this bolt (63)
Is rotatable about a horizontal axis parallel to the axis of the arrow.

The grounding member (4) is plate-shaped and has a base rubber on the lower surface.
It consists of a base (71) on which (71a) is affixed, and a leg (72) attached to the base so that the angle can be changed, and lower ends of the left and right columns (11a) of the lower ladder (11) by a clamp (80). It is attached to the outside.

As shown in FIGS. 7 and 8, the clamp (80) is fixed to the grounding member (4) and faces backward so that the lower ends of the left and right supports (11a) of the lower ladder (11) are fitted therein. The open U-shaped frame (81) and the rear edge (opening edge) of the inner wall that is rotatably supported by the rear edge (opening edge) of the outer wall (82) of the frame (81) ) The mounting bolt (85) in which the thread is inserted into the notch (83a) provided in (83), and the middle part of the bolt (85), which is brought into contact with the column of the lower ladder. And a wing nut (87) screwed to the tip of a bolt (85).

The front wall (84) of the frame (81) is a support for the lower ladder (11).
(11a) is abutted against the rear wall, and the outer wall of the frame (81)
(82) is projected forward of the front wall (84). Then, on the outer wall (82), the top wall (88a) of the square bracket (88)
Are superimposed and screwed together, and the の -shaped bracket (8
The leg (72) of the grounding member (4) is fitted and fixed between the opposed walls (88b) of (8), so that the clamp (80) is connected to the grounding member.
Fixed to (4). Holding member (86) for clamp (80)
Has elasticity, is brought into contact with the rear wall of the column (11a), and applies its elastic force to the column (11a). Thus, the support (11a) is sandwiched between the pressing member (86) and the front wall (84) of the frame (81).

The mounting bolt (85) has a ring-shaped head (85a).
And is supported by a bracket (89) fixed to the outside of the rear end of the outer wall (82) of the frame (81). The bracket (89) consists of a pair of upper and lower rectangular plates, and the head (85) of the mounting bolt (85) inserted between these rectangular plates
The mounting bolt (85) is rotatable about an axis parallel to the support (11a) by loosely inserting the intermediate portion of the bolt (90) penetrating both the shape plates in (a). A notch (82a) is provided at the rear end of the outer side wall (82) so that the mounting bolt (85) does not interfere with rotation. Therefore, FIG.
From the state shown by the dashed line, simply rotate the mounting bolt (85) and tighten the wing nut (87), and the holding member (86)
Press the support (11a) with the clamp (80)
Can be fixed to the column (11a).

The stabilizer (5) is a known one, and includes a fixed leg (91) attached along a support, and a slider (92) provided on the fixed leg (91) and slidable up and down along the fixed leg (91). ), A movable leg (93) rotatably attached to the slider (92), and a brace (94) passed between a lower end of the fixed leg (91) and a lower portion of the movable leg (93). Consisting of a leg end tool (95) provided at the lower end of the movable leg (93), a stable installation state is obtained by expanding the movable leg (93) by a predetermined angle. Both ends of the brace (94) are rotatably supported by the fixed leg (91) and the movable leg (93), and the lower end of the movable leg (93) is fixed to the fixed leg (9).
When approaching the lower end of (1), the angle of inclination of the brace (94) becomes small, and in the retracted state, as shown on the left of FIG. 10, the movable leg (93) and the brace (94) move to the fixed leg (91). Can be superimposed.

The left and right stabilizers (5) are each 3
The lower ladder (11) is attached to the lower end (11a) of the lower ladder (11) at the outer side of the lower end by two clamps (80). These clamps (80)
As shown in FIGS. 9 and 10, the grounding member (4) is
It has the same configuration as the clamp (80) attached to a), and a square plate-shaped bracket (96) is superimposed on the outer wall (82) of the frame (81) of the clamp (80) and screwed. The clamp (80) is fixed to the stabilizer (5) by fixing the bracket (96) to the inner surface of the fixed leg (91) of the stabilizer (5). 9 and 10,
The same parts as those of the clamp (80) shown in FIGS. 7 and 8 are denoted by the same reference numerals, and description thereof will be omitted.

The attachment of the first embodiment described above
The interval holding portion (22) of (3) is detachable at the hook portions (55), (56), and (57), and is replaced with the installation method of FIG.
It can also be used as follows.

In FIG. 11, a spacing member (22) includes a left and right rotating member (51) having a front end rotatably mounted on a lower cross member (33) of the mounting portion (21) so as to be rotatable around a horizontal axis. , Left and right rotating members (5
1) A rear horizontal member (54) connecting the rear ends of the
An intermediate rotation member having an upper end rotatably mounted on the upper cross member (32) of (21) about a horizontal axis and a lower end rotatably mounted on the rear horizontal member (54) about the horizontal axis. (53). That is, the left and right rotating member (51) attached to the upper cross member (32) in FIG. 2 is detached and attached to the lower cross member (33). In FIG. And the intermediate rotating member (5
3) is passed between the upper cross member (32) and the rear horizontal member (54). In this installation method, the contact
A stable state is obtained by pressing (23). Although not shown, it is suitable for a roof with a small inclination angle.

According to the ladder (1), when working on the roof (R) that may damage the gutter (G),
By leaning on the (R), an interval according to the interval holding part (22) is secured between the roof (R) and the ladder main body (2),
It does not damage the gutter (G) projecting from the roof (R) eaves. Further, the contact portion (23) and the interval holding portion (22) rotate around the horizontal axis, and the intermediate turning member (53) of the interval holding portion (22).
As a result, the attachment (3) is secured in a stable state, so that the contact portion (23) is not affected by the inclination angle and the shape of the roof (R) and even if the inclination angle of the ladder body (2) changes. The ladder (1) is stably installed along the roof (R). Further, the stability of the grounding portion is enhanced by the grounding member (4) and the stabilizer (5), and the lifting and lowering of the ladder (1) and the work using the ladder (1) can be performed with confidence. In addition, attachment / detachment of attachment (3) is possible only by tightening or loosening wing nut (39) of clamp (34), and attachment (3) can be easily attached / detached as required. .

Regarding the ladder (1) of the first embodiment,
Although the example of leaning on the roof (R) has been described as an example, this ladder (1) can of course be used when leaning against a roof (R), for example, leaning against a wall, and when leaning against a wall,
An effect of preventing damage to the wall surface can be obtained. When leaning against a wall, an attachment having a simpler configuration can be used, which will be described below.

FIGS. 12 to 14 show a ladder according to a second embodiment of the present invention. This ladder (101) is used when leaning against a wall, and includes a ladder main body (102) including left and right supports (102a) and a plurality of steps, and a ladder main body (10).
Attachment (103) provided at the upper end of (2), left and right grounding member (4) provided at the lower end of ladder body (102), and left and right stabilizer (5) provided at the lower part of ladder body (102). )
And

The attachment (103) includes a mounting part (111) detachably mounted on the ladder main body (102), and a mounting part (111).
(W) on which the front end is supported and the ladder (101) is leaned against
A spacing member (112) forming a predetermined gap between the holding member (112) and a holding member (112) attached to the rear end of the spacing holding member (112) so as to be rotatable around a horizontal axis and abutted against the wall (W). It comprises a contact portion (113).

The mounting portion (111) is composed of left and right side walls (121a) (121b) and a bottom wall (121c) connecting the tips of the left and right side walls, and has a U-shape with the opening facing rearward. 102a) and a frame (121) slidably fitted over the wing bolt (122) for connecting the front ends of the side walls (121a) (121b) of the frame (121).
And a nut (123).

The spacing part (112) is in the shape of a quadrangular prism, and its front end is welded to the bottom wall (121c) of the mounting part (111).

The contact portion (113) is composed of a triangular left and right side wall (131) and a bottom wall (132) connecting the bottom sides thereof.
Cushion material directly applied to the outer surface of the bottom wall (132)
(133) is pasted.

The tops of the left and right side walls (131) of the contact portion (113) are fitted over the spacing portion (112), and bolts penetrating therethrough are provided.
The nut (135) is fastened to (134). Bolt (13
The shaft portion of (4) is loosely fitted into a bolt insertion hole provided in the interval holding portion (112), whereby the contact portion (11
3) is rotatable about a horizontal axis. In this embodiment, the wing bolt (122) is not rotatable, and the attachment (103) is loosened with the wing bolt (122).
The ladder body (102) is attached by sliding from the upper end of the ladder body (102), and then tightening the wing bolt (122).
It is made to be fixed to.

The grounding member (4) and the stabilizer (5)
It is the same as that of the first embodiment, and is attached to the ladder main body (102) by the same clamp (80) as that of the first embodiment.

The ladder (101) is used in contact with the wall (W) of the building as shown in FIG. According to this ladder, the space holding portion (11) is provided between the wall (W) and the ladder main body (102).
Since the interval according to 2) is ensured, the corner of the upper end of the ladder main body (102) does not hit the wall surface and damage it. Also, since the contact portion (113) rotates around the horizontal axis, even if the inclination angle of the ladder body (102) changes, the contact portion (113) changes.
(113) is applied along the wall, and the ladder (101) is stably installed. When the attachment (103) is not used, the wing bolt (122) may be loosened and the entire attachment (103) may be pulled out and removed, and the attachment (103) can be easily attached and detached as necessary.

In the first and second embodiments,
In both cases, both the grounding member (4) and the stabilizer (5) are provided, but both are not necessary, and in a narrow place, only the grounding member (4) may be used, or the stabilizer (5) When using a grounding member
(4) may be omitted. In any case, the grounding member
Attachment and removal of (4) and the stabilizer (5) only require tightening or loosening the wing nut (87) of the clamp (80), and an appropriate state according to the use environment can be easily obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a ladder according to the present invention.

FIG. 2 is an enlarged side view in which the same part is cut away.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is an enlarged perspective view of the attachment.

FIG. 5 is a view showing an interval adjusting mechanism of a contact portion.

6 is a sectional view taken along the line VI-VI in FIG.

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 2;

FIG. 8 is an enlarged perspective view of a grounding member.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an enlarged perspective view of a stabilizer.

FIG. 11 shows a different installation method of the attachment.
FIG.

FIG. 12 is a partially cutaway side view showing a second embodiment of the ladder according to the present invention.

FIG. 13 is a sectional view taken along the line XIII-XIII in FIG.

FIG. 14 is an enlarged perspective view of an attachment.

[Explanation of symbols]

 (1) Ladder (2) Ladder body (3) Attachment (4) Grounding member (5) Stabilizer (11) Lower ladder (11a) Strut (12) Upper ladder (12a) Strut (21) Mounting part (22) Spacing Part (23) Contact part (31) Left and right vertical members (32) Upper cross member (33) Lower cross member (34) Clamp (36) First vertical member (37) Second vertical member (37a) Notch (38 ) Mounting bolt (39) Wing nut (51) Left and right rotation member (52) Middle horizontal member (53) Middle rotation member (54) Rear horizontal member (55) (56) (57) Hook (80) Clamp ( 81) Frame (82) Outer side wall (83) Inner side wall (83a) Notch (84) Front wall (85) Fixing bolt (86) Holding member (87) Wing nut (101) Ladder (102) Ladder body (102a ) Support (103) Attachment (111) Mounting part (112) Spacing part (113) Abutment part (R) Roof (W) Wall

Continued on the front page (72) Inventor Kikuo Enomoto 4-1-1, Hiroka, Miyagino-ku, Sendai City Inside the Uretech Co., Ltd. Inventor Chinori Ogata 2-25 Omachi 2-chome, Aoba-ku, Sendai City (72) Inventor Masakatsu Nemoto 4-1-1, Hiroka 4-chome, Miyagino-ku, Sendai City Inside of Yutec Co., Ltd. (72) Inventor Gaku Eguchi Osaka-shi, Osaka 7-23-4 Ebi, Hasegawa Kogyo Co., Ltd. (72) Naoki Tao, Inventor 7-23-4 Ebie, Fukushima-ku, Osaka-shi Inside Hasegawa Kogyo Co., Ltd. (72) Inventor Masayuki Oka 7, Ebi, Fukushima-ku, Osaka Chome 23-4 Hasegawa Kogyo Co., Ltd. F-term (reference) 2E044 AA06 BA01 BA11 BB03 BC12 BC22 BC23 CA04 CB03 CC01 DA01 DB01 DC04

Claims (8)

[Claims] The ladder body (2) (102) and the ladder body (2) (10)
Attachment (3) (103) provided on the rear side of the upper end of (2), the attachment (3) (103) is a ladder body (2)
Mounting parts (21) (111) detachably attached to (102),
A space holding part (22) (22) which forms a predetermined space with the building part (R) (W) where the front end is supported by the mounting parts (21) (111) and the ladders (1) (101) are leaned against (112) and a contact portion (23) (113) that is attached to the rear end of the spacing portion (22) (112) so as to be rotatable around a horizontal axis and abuts the building portion (R) (W). ) And a ladder. 2. The mounting part (21) is provided on the left and right supports of the ladder body (2).
Left and right vertical members (31) to be brought into contact with (12a) and left and right vertical members (31)
It consists of upper and lower cross members (32) and (33) suspended between them, and clamps (34) attached to the upper and lower sides of each vertical member (31), and the clamp (34) is provided on the ladder body (2). The support (12a) and the left and right vertical members (31) are sandwiched from both left and right sides, and the rear end
First and second vertical members (36) and (37) fixed to 1),
A bolt (38) that is rotatably supported at the front end of one of the vertical members (36) and has a threaded part inserted into a notch (37a) provided in the other vertical member (37). And bolt (3
The ladder according to claim 1, further comprising a nut (39) screwed to the tip of (8). 3. A left-right rotation member (51) having a front end rotatably mounted on an upper cross member (32) of a mounting portion (21) so as to be rotatable around a horizontal axis. An intermediate horizontal member (52) connecting the intermediate portions of the rotating member (51) to each other, and a lower cross member of the mounting portion (21).
(33) having an intermediate rotating member (53) having a lower end rotatably mounted around a horizontal axis and an intermediate horizontal member (52) having an upper end rotatably mounted around a horizontal axis. 3. The ladder of claim 2, wherein: 4. A left and right rotating member (51) having a front end rotatably mounted on a lower cross member (33) of a mounting portion (21) so as to be rotatable around a horizontal axis. A rear horizontal member (54) connecting the rear ends of the rotating member (51) and an upper cross member of the mounting portion (21)
(32) having an intermediate rotating member (53) having an upper end rotatably mounted on a horizontal axis and a rear horizontal member (54) having a lower end rotatably mounted on a horizontal axis. 3. The ladder of claim 2, wherein: 5. The horizontal members (32) and (33) of the mounting part (21) and the horizontal members (52) and (54) of the spacing part (22) are both circular in cross section, and the left and right rotating members (51) ), The upper end of the intermediate pivoting member (53) and the lower end of the intermediate pivoting member (53)
(32) (33) and a hook portion (55) (56) (57) having a semi-cylindrical inner peripheral surface rotatably and detachably fitted to the horizontal members (52) (54). The ladder of claim 3 or 4, wherein 6. The ladder according to claim 1, wherein the contact portions are attached to the left and right of the spacing portion, respectively, and the left and right spacing of the contact portions is adjustable. 7. A grounding member (4) for increasing a grounding area is attached to a lower end of the ladder body (2) (102) by a clamp (80), and the clamp (80) is connected to the grounding member (4). U-shaped frame (81) fixed to the ladder main body (2) (102) and supporting columns (11a) (102a) of the ladder main body (2) (102), and one of the right and left side walls of the frame (81) Notch (83a) rotatably supported by the opening edge of (82) and provided at the opening edge of the other side wall (83)
A bolt (85) with a threaded part
(85) is fitted to the middle part of the ladder body (2) (102)
a) annular holding member (86) abutting on (102a)
A ladder according to claim 1, comprising a nut (87) screwed to a tip of the bolt (85). 8. A stabilizer (5) is attached to a lower portion of the ladder body (2) (102) by a clamp (80), and the clamp (80) is fixed to the stabilizer (5) and the ladder body (2). The U-shaped frame (81) in which the portions of the columns (11a) and (102a) of the (102) are fitted, and the opening edge of one of the left and right side walls (82) of the frame (81) A bolt (85), which is rotatably supported and has a threaded portion inserted into a notch (83a) provided at the opening edge of the other side wall (83), and an intermediate portion between the bolt (85) An annular holding member (86) fitted and brought into contact with the struts (11a) (102a) of the ladder body (2) (102), and a bolt (8)
5. The ladder according to claim 1, further comprising a nut (87) screwed to the tip of (5).