JP3138358U - Fall prevention tool for stepladder and stepladder - Google Patents

Abstract

[PROBLEMS] To provide a stepladder fall prevention tool that can be easily attached to and detached from a stepladder of various sizes without processing the stepladder and that is excellent in preventing the stepladder from falling.
A stepladder fall prevention device for a stepladder structured to be detachably attached to a vertical member of a stepladder by a mounting member and to prevent the stepladder from falling by a rod-like auxiliary leg member rotatably attached to the mounting member. The mounting member includes a U-shaped belt-shaped mounting portion that encloses and surrounds the vertical member of the stepladder, a mechanism for mounting the bar-shaped auxiliary leg member, and a rotation of the bar-shaped auxiliary leg member. A stepladder fall prevention device, comprising: at least one stopper portion that can fix a moving motion at an optimum position.
[Selection] Figure 1

Description

  The present invention relates to a stepladder fall prevention device and a stepladder. More specifically, the present invention relates to a stepladder fall prevention tool effective for preventing a stepladder from falling over, and a stepladder to which the stepladder is attached.

  Conventionally, a stepladder has been widely used when working at a high place where human hands cannot reach. For example, as shown in FIG. 6, the stepladder 100 has a configuration in which a pair of ladder portions each having two vertical members 101 and a plurality of horizontal rails 102 laid between the two vertical members 101 are connected to each other at an upper end portion so as to be freely opened and closed. An operator or the like works on the crosspiece 102 of the stepladder 100 to perform work.

  However, because of its structure, the stepladder is relatively durable against impacts and shaking from the front side of the ladder, but it is weak against impacts and shaking from the side of the ladder, and the stepladder falls. In addition, there was a problem that work on the stepladder was restricted due to fear of falling.

  For this reason, various methods have been proposed so far to prevent the stepladder from overturning. For example, in Patent Document 1, a connecting portion that is horizontally mounted between two opposing pedestals of a stepladder and fixed to the pedestal, and extends downward from the linking portion outside the opposing pedestal. There has been proposed a fall prevention jig for a stepladder having a pair of support columns. However, this fall prevention jig for the stepladder has problems that it is not only difficult to attach to and remove from the stepladder but also cannot be used for various types and sizes of stepladders.

  In Patent Document 2, a pole pole of the same size as the stepladder is installed on a folding stepladder top bracket, the pole pole is opened to the ground, and an L-shaped hook attached to the pole pole by a ring. A lateral fall prevention device for a stepladder fixed to a stepladder body has been proposed. Although this lateral fall prevention device can be easily attached to and detached from the stepladder, it has been necessary to perform processing such as installing a hook receiving bracket on the stepladder in advance. That is, in order to use this rollover prevention device, it is necessary to perform this processing for each stepladder held, which is very complicated. Also, this lateral fall prevention device cannot be used for various types and sizes corresponding to stepladders. Furthermore, this lateral fall prevention device is one for the side impact and shaking. There is also a problem that a sufficient fall prevention effect cannot be obtained due to the structure supported by the pole poles.

Registered Utility Model No. 3019139 Utility Model Registration No. 3074804

  Therefore, the object of the present invention is to easily attach and detach the stepladder of various sizes and types without processing the stepladder, and to further prevent the stepladder from falling over. It is to provide a fall prevention tool for use. Moreover, the objective of this invention is providing the stepladder which attaches this fall prevention tool for stepladders.

  The above problems are solved by the following present invention. That is, the present invention provides a structure for preventing a stepladder from falling over by using a rod-like auxiliary leg member that is detachably attached to a vertical member of a stepladder by a mounting member and is pivotally attached to the mounting member. A U-shaped band-shaped mounting portion in which the mounting member encloses and surrounds the vertical member of the stepladder, a mechanism for mounting the bar-shaped auxiliary leg member, and the bar-shaped auxiliary leg member It is a stepladder fall prevention tool characterized by having at least one stopper part which makes it possible to fix the rotating motion of the stepping mechanism at the optimum position.

  Further, the fall prevention device for stepladder of the present invention has the U-shaped belt-shaped attachment portions at two locations, and these attachment portions are separated by a plate-shaped connecting portion and separated into a U-shape. It is preferable that they are integrated so that their directions coincide with each other, and a mechanism for attaching a rod-shaped auxiliary leg member to the connecting portion is provided. Moreover, it is preferable that the fall prevention tool for stepladders of this invention is provided with the mechanism for attaching the said rod-shaped auxiliary leg member in the center part of the said plate-shaped connection part. Further, the fall prevention tool for stepladder of the present invention may be configured such that the stopper portion is provided integrally with the U-shaped band-shaped attachment portion, and the stopper portion is provided. In addition, a configuration may be adopted in which the member is provided as a member different from the U-shaped band-shaped attachment portion integrated with the plate-like connection portion.

  Further, the fall prevention tool for stepladder of the present invention further includes a fixing tool for fixing the mounting member to the vertical member of the stepladder, and the fixing tool has a U-shape constituting the mounting portion. It is preferable to have a mechanism for fixing the outer peripheral surface of the vertical member of the stepladder to one of the two opposing surfaces among the formed surfaces, and the mechanism of the fixing tool is screwed A mechanism is preferred. Further, the fall prevention tool for the stepladder of the present invention is provided between the two surfaces in the vicinity of the open side of the two opposing surfaces of the surfaces formed in the U-shape constituting the mounting portion. It is preferable that a mechanism for attaching a spanning member to be hung is provided, and the spanning member is preferably a long screw.

  Further, the fall prevention tool for the stepladder according to the present invention further includes a leg storage member that stores the auxiliary leg member when the fall prevention device for the stepladder is not used, and the leg storage member includes the auxiliary leg member, It is preferable that it is a form that is fixed and stored in a direction parallel to the length direction of the vertical member to which the fall prevention tool for stepladders provided with this is attached, and a form in which the length of the auxiliary leg member can be expanded and contracted It is preferable that

  In addition, another embodiment of the present invention is a stepladder characterized by being attached with the stepping prevention device for stepladder of the present invention.

  According to the present invention, a stepladder can be easily attached to and detached from a stepladder of various sizes and types without processing the stepladder, and is excellent in preventing the stepladder from falling. Preventive devices can be provided. Moreover, according to this invention, the stepladder which attaches this fall prevention tool for stepladders can be provided.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of the stepladder fall prevention device 1 of the present invention. FIG. 2 is a plan view of the stepladder fall prevention device 1 according to the embodiment of FIG. 1 as viewed from above (the attachment portion 11, the coupling portion 14, the fixture 30 and the spanning member 40 are shown). It is explanatory drawing which shows the procedure which attaches the attachment member 10 to the vertical member 101. FIG. FIG. 3 is a side view of the stepladder fall-preventing device 1 according to the embodiment of FIG. 1, and is an explanatory view showing a state in which the auxiliary leg member 20 is rotated and fixedly stored in the leg storage member 50. FIG. 4 is an explanatory view showing an embodiment of the extendable auxiliary leg member 20. FIG. 5 is an explanatory view for explaining an attachment state of the embodiment of the stepladder fall prevention device 1 of the present invention. FIG. 6 is a perspective view showing an embodiment of the stepladder 100 of the present invention.

  The fall prevention tool 1 for stepladder of the present invention is used by being attached to a vertical member 101 of a stepladder 100 as shown in FIG. 6, and basically, at least as shown in FIG. It has the structure which has the attachment member 10 detachably attached to the vertical member 101 of this, and the rod-shaped auxiliary | assistant leg member 20 attached to this attachment member 10 so that rotation is possible. Hereinafter, preferable embodiment of each member which comprises the fall prevention tool 1 for stepladders of this invention is described.

  As shown in FIG. 1 or 2, the mounting member 10 that characterizes the present invention includes a U-shaped belt-shaped mounting portion 11 that houses and surrounds the vertical member 101 of the stepladder 100 and a rod-shaped auxiliary leg member 20. It has the structure which has the mechanism 12 for attaching, and at least 1 stopper part 13 which makes it possible to fix the rotational motion of the rod-shaped auxiliary leg member 20 to an optimal position.

  The U-shaped band-shaped attachment portion 11 is sized to accommodate and surround the longitudinal member 101 inside, and the attachment member 11 alone or in combination with other members allows the longitudinal member 101 to be surrounded. The size is not particularly limited as long as it is detachable. For example, it can be fitted to the vertical member 11 from the U-shaped open portion of the mounting portion 11 and can be sized to be firmly fixed. However, in the present invention, as shown in FIG. 2, the mounting portion 11 has a width of the surface 11 a that connects the two surfaces 11 b facing each other out of the surfaces formed in a U shape, and is 1 mm to the width of the wide width 101 a of the vertical member 101. It is preferable that the size is large within a range of 25 mm. By adopting a configuration in which a gap is generated between the mounting portion 11 and the longitudinal member 101, one of the two surfaces 11b of the mounting portion 11 facing each other is separately provided using a fixing tool 30 that applies a pressing force. It becomes possible to press-contact the outer peripheral surface of the vertical member 101 to the surface 11b, and thereby, the attachment member 10 (the stepladder fall prevention tool 1) can be firmly attached to the vertical member 101. As such a fixture 30, for example, one having a screwing mechanism as shown in FIG. 1 or 2 or one having a mechanism (not shown) using foamed foam can be used. When using the fixing tool 30 having a screwing mechanism, a screw hole is provided in advance on at least one surface 11b of the two surfaces 11b facing each other of the mounting portion 11. In this case, the length of the screw 30 to be used is appropriately adjusted depending on the distance between the vertical member 101 and the surface 11b on which the screw hole is provided. Further, the width of the band-like portion of the attachment portion 11 is not particularly limited, but can be, for example, within a range of 10 mm to 40 mm, which is a width capable of firmly attaching the attachment member 10.

  Further, the fall prevention tool for stepladder 1 of the present invention is further in the vicinity of the surface end portion 11b 'on the open side of the two opposing surfaces 11b of the U-shaped surfaces constituting the attachment portion 11. Further, it is preferable that a mechanism for attaching a spanning member 40 spanned between the two surfaces 11b is provided (see FIG. 1 or FIG. 2). By attaching the spanning member 40, the attachment member 10 can be attached to the longitudinal member 101 more firmly. In addition, the opening portion of the U-shaped attachment portion 11 is closed by the spanning member 40. For this reason, even if the fixing tool 30 described above is loosened and the attachment portion 11 is detached from the vertical member 101, the spanning prevention device 1 for the stepladder 1 is detached as a whole and is supported on the ground. It is possible to effectively prevent falling. As such a spanning member 40, for example, a foot-length screw as shown in FIG. 1 or 2 can be preferably used.

  For example, in the case where the mechanism of the fixing tool 30 is a screwing mechanism and the spanning part 40 is a long foot screw, the stepladder fall prevention tool 1 (attachment member 10, attachment part 11) is connected to the vertical member 101 of the stepladder 100. The method of attaching to will be described. First, as shown in FIG. 2A, the attachment portion 11 and the stepladder 100 are separated from each other. Next, the vertical member 101 is accommodated inside the mounting portion 11 by moving the mounting portion 11 in the A direction, as shown in FIG. Thereafter, by inserting the fixture 30 having a screwing mechanism deeply into the attachment portion 11 in the B direction, as shown in FIG. 2C, one surface of the two surfaces 11b facing the attachment portion 11 The outer peripheral surface of the vertical member 101 is pressed against 11b. Accordingly, the stepladder fall prevention tool 1 (attachment member 10, attachment portion 11) is fixed and attached to the vertical member 101. Further, in the general stepladder 100, convex portions 101c are formed at both ends of the surface of the vertical member 101 on the narrow width 101b side (see FIG. 2). For this reason, it is effectively prevented that the fixture 30 slips on the surface of the vertical member 101 with which the fixture 30 contacts and the attachment member 10 is detached from the vertical member 101. However, in order to make the attachment of the attachment member 10 to the vertical member 101 stronger, as shown in FIG. 2 (d), a leg length screw 40 is used to hang between the two faces 11b of the attachment portion 11 facing each other. Can be passed. Moreover, it becomes possible to adjust the attachment intensity | strength of the attachment member 10 by tightening the screw | thread 40 of a leg length strongly. On the other hand, when removing the stepladder fall prevention tool 1 (attachment member 10, attachment portion 11) from the vertical member 101 of the stepladder 100, it can be performed by a procedure reverse to the attachment procedure described above. Thus, since the fall prevention tool 1 for stepladders of this invention is a thing of the structure which attaches to or removes from the stepladder 100 using the shape characteristic of the attachment member 10 (attachment part 11), it is attached to the stepladder 100. There is no need for processing, and it can be easily attached and removed. Moreover, since this attachment member 10 can be attached to any position of the vertical member 101, the size of the stepladder 100 to be attached is not selected in the stepladder fall prevention device 1 of the present invention.

  Thus, the most preferable form of the fall prevention tool 1 for stepladder 1 of the present invention, which is detachably attached to the vertical member 101 of the stepladder 100 by the attachment member 10 (attachment portion 11), is a U-shape as shown in FIG. There are two belt-like attachment portions 11 of the mold, and these attachment portions 11 are integrated by plate-like connecting portions 14 so that the directions of the U-shapes coincide with each other at a position, And it is the form by which the mechanism 12 for attaching the rod-shaped auxiliary leg member 20 to the connection part 14 is provided. With this configuration, the stepladder fall prevention device 1 is more firmly fixed to the vertical member 101 by the two attachment portions 11, and a mechanism for attaching the rod-like auxiliary leg member 20. Can also be provided at an optimum location. In this preferred embodiment, the distance between the separated mounting portions 11 is not particularly limited as long as it is within a range shorter than the distance between two adjacent horizontal rails 12, but for example within a range of 50 mm to 300 mm. can do.

  If the plate-shaped connection part 14 can ensure the structure mentioned above, there will be no restriction | limiting about the magnitude | size, For example, the thing of width 10mm-30mm, length 50mm-300mm, and thickness 3mm-10mm can be used. Moreover, even if the plate-shaped connection part 14 was manufactured integrally with the attachment part 11 and the stopper part 13 mentioned later, a member different from these may be sufficient as it. The mechanism 12 for attaching the rod-shaped auxiliary leg member 20 provided in the connecting portion 14 is not particularly limited. For example, a tightening screw including a bolt portion 12a and a nut portion 12b, a connecting portion 14 and A mechanism using a bolt insertion hole installed in each of the auxiliary leg members 20 can be used (see FIGS. 1, 3, and 5). That is, as shown in FIG. 1, the auxiliary leg member 20 is attached to the connecting portion 14 by clamping the connecting portion 14 and the auxiliary leg member 20 with the fastening screws. Moreover, it is preferable that the mechanism 12 for attaching this rod-shaped auxiliary leg member 20 is provided in the center part of the plate-shaped connection part 14 (refer FIG. 5). Thereby, the attachment member 10 of the fall prevention tool 1 for the stepladder can be in a vertically symmetrical form with the center portion as the center, and the stepladder 100 is configured by changing the direction of the auxiliary leg member 20 by 180 degrees. It can be attached to any vertical member 101. That is, as shown in FIG. 6, when attaching the stepladder fall prevention tool 1 to the vertical member 101 of the stepladder 100, normally, two types of attachment positions of the auxiliary leg members 20 are different depending on the vertical member 101 to be attached. It is necessary to use the stepladder fall prevention tool 1 properly. However, by using the stepladder fall prevention device 1 in which the mounting member 10 described above has a vertically symmetrical form, the two types of stepladder fall prevention devices 1 with different attachment positions of the auxiliary leg member 20 in one form are provided. Both are provided, and it is possible to attach them corresponding to all the four vertical members 101 constituting the stepladder 100. As mentioned above, although the form which provided the mechanism 12 for attaching the auxiliary leg member 20 to the connection part 14 was demonstrated, this mechanism 12 is not limited to this form, For example, you may be provided in the attachment part 11 ( Not shown).

  The stopper portion 13 is not particularly limited in its form as long as the turning motion of the auxiliary leg member 20 rotatably attached can be fixed at the optimum position. For example, as shown in FIG. 1 or FIG. 5, the auxiliary leg member 20 can be protruded in a direction orthogonal to the rotational movement of the auxiliary leg member 20, and the auxiliary leg member 20 can be restrained by this protruding portion. . The stopper portion 13 in the form shown in FIG. 1 or FIG. 5 has a plate shape with a thickness of about 2 mm bent at 90 degrees, and is joined to the back surface of the connecting portion 14. It is sufficient that at least one such stopper portion 13 is provided, but it is preferable that two or more stopper portions 13 are provided apart from each other from the viewpoint of higher safety (see FIG. 1 or FIG. 3). In addition, the stopper portion 13 may be provided integrally with the U-shaped band-shaped attachment portion 11 (not shown), or the stopper portion 13 may be integrated with the plate-like connecting portion 14. It can also be set as the form provided as a member different from the character-shaped strip | belt-shaped attachment part 11 (refer FIG. 1 or FIG. 3). Further, the optimum position described above is the position of the auxiliary leg member 20 that is optimal for preventing the stepladder 100 from toppling over when the stepladder fall prevention tool 1 is used. The inner angle with the leg member 20 can be set to a position within a range of 70 to 80 degrees (see FIG. 3 or FIG. 6). The auxiliary leg member 20 is fixed at an angle in such a range. By providing the stopper portion 13 on the auxiliary leg member 20, not only can the auxiliary leg member 20 be adjusted to the optimum position more easily, but also displacement from the optimum position can be effectively prevented.

  The auxiliary leg member 20 constituting the present invention is rotatably attached to the attachment member 10 as shown in FIG. In the present invention, the form of the auxiliary leg member 20 is not particularly limited as long as it is a rod shape. For example, as shown in FIG. 1, a plate member and a pipe member are combined with a joining member 60 such as a screw. For example, a form using a pipe material alone as shown in FIG.

  Further, in the present invention, the length of the auxiliary leg member 20 depends on the size of the stepladder 100 to which the stepladder fall prevention device 1 is attached and on which position (height) of the vertical member 101 the attachment member 10 is attached. However, it is preferable that it exists in the range of 1,000 mm-2,000 mm, for example. Also, the size of the auxiliary leg member 20 in the width direction is not particularly limited, but it is preferable that the size of the auxiliary leg member 20 exhibits a strength sufficient to prevent the stepladder 100 from falling. Furthermore, for example, as shown in FIG. 4, the auxiliary leg member 20 is particularly preferably in a form in which its length can be expanded and contracted. As a method of making the length of the auxiliary leg member 20 extendable / contractable, for example, in the case of a form in which a plate member and a pipe member are combined with the joining member 60 as shown in FIG. For example, a method of making the length extendable and the like can be used by changing the length. In the case of the form using pipe materials as shown in FIG. 4, after adjusting pipes having different diameters to an appropriate length by sliding them in the E direction, these are fixed using bolts 61 or the like. Thus, a method of making the length of the auxiliary leg member 20 extendable and the like can be used. The fall prevention device 1 for the stepladder of the present invention can be accommodated by the stepladder 100 of any size by accommodating the auxiliary leg member 20 in such a form that can be expanded and contracted. Sometimes it is possible to align the legs with the longitudinal member 101 (see FIG. 3). Further, it is preferable to provide a non-slip portion 21 such as a rubber foot at the tip portion of the auxiliary leg member 20 in contact with the ground (see FIG. 3 or FIG. 6).

  The auxiliary leg member 20 is rotatably attached by the mechanism 12 provided on the attachment member 10 as described above. The above-described tightening screw will be described as an example. First, the bolt portion 12a is inserted from the back surface of the connecting portion 13 of the mounting member 10, and the tip of the screw side is projected outward. Next, the bolt part 12a is inserted into the hole of the auxiliary leg member 20 provided with a hole through which the bolt part 12a passes. Furthermore, the auxiliary leg member 20 can be fixed by sandwiching and tightening the periphery of the insertion portion of the auxiliary leg member 20 with the bolt part 12a and the nut part 12b paired therewith (see FIG. 1 or FIG. 3). ). The auxiliary leg member 20 fixed and attached in this manner can be freely rotated in the C direction or D direction by loosening the nut portion 12b, etc., and after being moved to a predetermined position, is tightened again. Tighten with the attached screw to fix (see Fig. 3). Further, a plurality of holes for allowing the bolt portions 12a provided in the auxiliary leg member 20 to pass therethrough can be provided. In this case, the length of the auxiliary leg member 20 can be changed by changing the mounting position of the auxiliary leg member 20 with a tightening screw. Can be adjusted as appropriate.

  In the present invention, the auxiliary leg member 20 is preferably bent within a range of 5 to 20 degrees as shown in FIG. By using the bent auxiliary leg member 20 as described above, the auxiliary leg member 20 is effectively prevented from coming into contact with the vertical member 101, and when the stepladder 100 is installed, the angle differs from the angle at which the vertical member 101 opens. The auxiliary leg member 20 can be installed at an angle, and the stability of the stepladder 100 can be further maintained (see FIG. 6).

  Furthermore, the fall prevention tool 1 for stepladder of this invention can be equipped with another member as needed. For example, the leg storage member 50 that stores the auxiliary leg member 20 when the stepping-up fall prevention tool 1 is not used can be provided. As such a leg storage member 50, for example, as shown in FIG. 1 or FIG. 3, a direction parallel to the longitudinal direction of the vertical member 101 to which the stepladder fall prevention device 1 provided with the auxiliary leg member 20 is attached. Can be fixed and stored. Moreover, as a form of the leg storage member 50, for example, as shown in FIG. 1, a mounting portion 51 for a U-shaped belt-shaped leg storage member that houses and surrounds the vertical member 101 of the stepladder 100 inside, The thing of the form which has the accommodating part 52 with the recessed part part which accommodates the auxiliary leg member 20 is mentioned. The leg storage member 50 can also be detachably attached to the longitudinal member 101 in the same manner as the attachment member 10 described above. For example, the screw-type fixing tool 30 is inserted from the outside to the inside of the mounting portion 51, and the outer peripheral surface of the vertical member 101 is pressed against one surface of the two facing surfaces of the mounting portion 51 by the pressing force of the fixing device 30. Thus, the leg storage member 50 can be attached to the vertical member 101 (see FIG. 3). Further, the leg storage member 50 is attached below the attachment position of the attachment member 10 described above, preferably at the foot portion of the vertical member 101 of the stepladder 100 (see FIG. 1). The leg storage member 50 may be attached so that the above-described attachment member 10 and the U-shaped open portion are in opposite directions (see FIG. 6). Further, when the leg storage member 50 is attached to the foot portion of the vertical member 101, the leg storage member 50 is directly below the horizontal rail 102 in order to prevent a user of the stepladder 100 from stepping on the leg storage member 50. Is preferably attached (see FIG. 6).

  The auxiliary leg member 20 can be stored in the leg storage member 50 by, for example, the following method. First, the auxiliary leg member 20 in use as shown in FIG. 3A is moved in the direction C, and is stored and fixed in the concave portion of the storage portion 52 as shown in FIG. On the other hand, when the auxiliary leg member 20 is used, it is moved in the D direction (see FIG. 3). That is, the stepladder prevention tool 1 for the stepladder of the present invention adopts such an embodiment so that the stepladder 100 can be accommodated while the stepladder 100 is attached to the stepladder 100. Further, in this case, the stepladder fall prevention device 1 according to the present invention is a hindrance when storing the stepladder 100, because the stepladder fall prevention device 1 of the present invention can be folded to approximately the same size as when the stepladder fall prevention device 1 is not attached. do not become.

  The material of the fall prevention device 1 for a stepladder according to the present invention having such a configuration is preferably made of a metal having higher strength. For example, a material such as iron, aluminum, or stainless steel is appropriately selected and used. Can do. Preferably, it is made of aluminum that is strong and lightweight. The attachment member 10 made of such a material may be manufactured by integrally manufacturing each part by a method such as a casting method, or may be manufactured by joining and integrating a plurality of parts. Moreover, it is preferable that the accommodating part 52 of the leg accommodating member 50 formed in the form shown in FIG. 1 is made of wood or resin having elasticity. In this case, the auxiliary leg member 20 can be stored more stably utilizing the elastic force. Further, as described above, the anti-slip portion 21 is also preferably made of rubber.

  The stepladder fall prevention device 1 of the present invention can be used by attaching the attachment member 10 to the vertical member 101 of the stepladder 100 as shown in FIG. The mounting direction of the mounting member 10 to the stepladder 100 may be that the open side of the U-shape may be directed inward or outward of the stepladder 100. Is preferably attached with the U-shaped open side facing outward (see FIG. 6). Moreover, it is preferable that the attachment member 10 of the stepladder fall prevention tool 1 is attached directly below the crosspiece 102 as shown in FIG. When a force is applied from the side surface direction of the stepladder 100 while the stepladder 100 to which the stepladder fall prevention tool 1 is attached is used, the mounting member 10 is loaded upward. However, by attaching the mounting member 10 of the stepladder fall prevention device 1 directly below the horizontal beam 102, the upward force applied to the horizontal beam 102 on the mounting member 10 can be suppressed, and the stability of the stepladder 100 can be reduced. Sex can be made more certain.

  The stepladder 100 to which the stepladder fall prevention tool 1 is attached increases the stability of the stepladder 100 by rotating and opening the auxiliary leg member 20 in the outward direction (D direction) of the stepladder 100 during use. To prevent it from falling (see FIG. 3 or FIG. 6). On the other hand, when the stepladder 100 is not used, the auxiliary leg member 20 is rotated and stored in the inward direction (C direction) of the stepladder 100 (see FIG. 3), or the stepladder fall prevention tool 1 is removed. Moreover, it is preferable to adjust an attachment position so that an angle may be about 75 degree | times using the fall prevention tool 1 for stepladders. Such adjustment of the attachment position can be easily performed, for example, by changing the position (height) at which the attachment member 10 is attached to the longitudinal member 101 or by adjusting the length of the auxiliary leg member 20. it can. Further, the stepladder fall prevention device 1 of the present invention is preferably attached to a total of two or more, one on each of the left and right sides of the stepladder 100, and more preferably attached to all the vertical members 101 of the stepladder 100. .

  As described above, the stepping prevention device 1 for the stepladder of the present invention can be easily attached to and detached from the stepladder 100 of various sizes and types without processing the stepladder 100. It is excellent in preventing 100 falls. For this reason, the fall prevention device 1 for the stepladder of the present invention is particularly effective when used in a general home that is not used to handling the stepladder 100 or when the scaffold is used in an unstable place.

The perspective view which shows one Embodiment of the fall prevention tool for stepladders of this invention. Explanatory drawing which shows the procedure which attaches an attachment member to the vertical member of a stepladder. Explanatory drawing of the state which rotated the auxiliary leg member and was fixedly accommodated in the leg accommodating member. Explanatory drawing which shows one Embodiment of the auxiliary leg member which can be expanded-contracted. Explanatory drawing explaining the attachment state of one Embodiment of the fall prevention tool for stepladders of this invention. The perspective view which shows one Embodiment of the stepladder of this invention.

Explanation of symbols

1: Standing fall prevention tool 10: Mounting member 11: Mounting portion 12: Mechanism for mounting a rod-shaped auxiliary leg member 13: Stopper portion 14: Connecting portion 20: Rod-shaped auxiliary leg member 30: Fixing device 40: Overhang Member 50: Leg storage member 60: Joining member 100: Stepladder 101: Vertical member 102: Horizontal rail

Claims (12)

  A stepladder fall prevention device for a stepladder structured so as to be detachably attached to a vertical member of a stepladder by a mounting member and to prevent the stepladder from falling by a rod-shaped auxiliary leg member rotatably attached to the mounting member, A mounting member has a U-shaped belt-shaped mounting portion that encloses and surrounds a vertical member of a stepladder, a mechanism for mounting a bar-shaped auxiliary leg member, and a rotational movement of the bar-shaped auxiliary leg member. A stepladder fall-preventing device comprising at least one stopper portion that can be fixed at an optimum position.   The U-shaped belt-shaped attachment portions are provided at two locations, and these attachment portions are integrated by plate-like connecting portions so that the directions of the U-shapes coincide with each other at positions. And the fall prevention tool for stepladders of Claim 1 provided with the mechanism for attaching a rod-shaped auxiliary | assistant leg member to this connection part.   The fall prevention tool for stepladder according to claim 2, wherein a mechanism for attaching the rod-shaped auxiliary leg member is provided at a central portion of the plate-like connecting portion.   The fall prevention tool for stepladder according to any one of claims 1 to 3, wherein the stopper portion is provided integrally with the U-shaped band-shaped attachment portion.   The stepper overturn prevention tool according to claim 2 or 3, wherein the stopper portion is provided as a member separate from the U-shaped band-shaped attachment portion integrated with the plate-like connecting portion.   Furthermore, it has the fixing tool for attaching and fixing the said attachment member to the vertical | vertical material of a stepladder, and this fixing tool of two surfaces which face each other among the surfaces formed in the U-shape which comprises the said attachment part The stepping prevention device for a stepladder according to any one of claims 1 to 5, further comprising a mechanism for fixing the outer peripheral surface of the vertical member of the stepladder to one surface in a state of being pressed.   The fall prevention tool for stepladder according to claim 6, wherein the mechanism of the fixing tool is a screwing mechanism.   A mechanism for attaching a spanning member that spans between the two surfaces in the vicinity of the open end of the two opposing surfaces of the U-shaped surfaces that constitute the mounting portion The fall prevention tool for stepladders of any one of Claims 1-7 with which is provided.   The stepping prevention tool for a stepladder according to claim 8, wherein the spanning member is a foot-length screw.   Furthermore, the leg storage member includes a leg storage member that stores the auxiliary leg member when the stepladder fall prevention device is not used, and the leg storage member is attached to the stepladder fall prevention device including the leg support member. The fall prevention tool for stepladder according to any one of claims 1 to 9, which is configured to be fixedly housed in a direction parallel to a length direction of the vertical member.   The fall prevention tool for stepladder according to any one of claims 1 to 10, wherein the length of the auxiliary leg member is extendable.   A stepladder comprising the stepladder fall prevention device according to any one of claims 1 to 11.

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