JP2007327203A - Storage type ramps - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage type ramps, which requires only an extremely small space for installation. <P>SOLUTION: This storage type ramp comprises a ladder portion 1 with a predetermined length, and a supporting member 2 which supports the ladder portion 1 in such a manner as to be turnable in a direction almost orthogonal to a step arrangement surface of the ladder portion 1 and slidable in a longitudinal direction, by using a hinge portion 4 mounted on a mounting object within the width of the ladder portion 1. A lower end of the ladder portion 1 is provided with a wheel 7 which can be rotated on the center of an axle parallel to a rotating shaft of the ladder portion 1, and the wheel 7 is provided with a stopper 3 for inhibiting the rotation of the wheel 7 when coming into contact with the wheel 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a trap installed on a wall surface of a building, and more particularly to a retractable trap that can be used by being pulled from an upright state to an inclined state.

  For example, there are water supply facilities and elevators and other management facilities that are formed one step higher on the school buildings and apartment roofs, and these facilities are provided with a trap for climbing up and checking.

  This trap is generally composed of a plurality of U-shaped iron bars installed on the wall surface of a facility, and these iron bars are lined up and down in a state of projecting horizontally and embedded in the wall surface. Since this conventional wrap is used only for a long span of several months or a year, the part lower than the person's height is usually cut for reasons such as obstruction of traffic, etc. In addition, since the iron bar forms a step vertically, there is an inconvenience that an arm support is always required for ascending and descending.

As a countermeasure against this, the inventor of the present application disclosed in Patent Document 1 below, a support member that supports the ladder portion of the trap so as to be slidable in the longitudinal direction and rotatable in a direction substantially perpendicular to the stepping rod of the ladder portion. We are proposing a storage type trap with a built-in storage.
JP 2000-145340 A

  By the way, in the above-mentioned conventional retractable trap, the support member is attached to the attachment object via a hinge portion protruding outward in the short direction of the ladder portion. In this case, the trap cannot be installed unless the mounting position of the mounting object has a width obtained by adding the width of the hinge portion protruding to both sides to the width of the ladder portion in the short direction.

  The present invention has been proposed in view of the above-described conventional circumstances, and an object thereof is to provide a retractable trap that requires a very small space for installation.

  The present invention employs the following means in order to achieve the above object. That is, the retractable trap according to the present invention is rotated in a direction substantially orthogonal to the step arrangement surface of the ladder portion by a ladder portion having a predetermined length and a hinge portion attached to the attachment object within the width of the ladder portion. A support member that supports the ladder portion so as to be movable and slidable in the longitudinal direction. A wheel capable of rotating around an axis parallel to the rotation axis of the ladder portion is provided at a lower end of the ladder portion, and the wheel prohibits rotation of the wheel when contacting the wheel. Is provided.

  According to this configuration, the retractable trap can be installed if the attachment object has a space corresponding to at least the width of the ladder portion in the short direction.

  According to the retractable trap of the present invention, the retractable trap can be installed in an extremely small space. Further, since the ladder portion is rotatable and slidable with respect to the mounting position by the support member, it can be used in a state where the lower portion of the ladder portion is pulled out and inclined so as to be separated from the building or the like. For this reason, even when the hand is released, the trap can be safely lifted and lowered. Furthermore, since the ladder portion is leaned against the ground, a conventional stepladder is not necessary.

  Further, after use, since the ladder portion can be erected in an upright state and slid upward to be moved to the required height, it can be stored compactly at an unobstructed height.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a state in use of a retractable trap in one embodiment of the present invention. FIG. 2 is a side view showing a state in which the retractable trap is upright. FIG. 3 is a front view of the retractable trap.

  As shown in the above drawings, the retractable trap of the present embodiment includes a ladder portion 1 having a predetermined length and a support member 2 that supports the ladder portion 1 so as to be slidable in the longitudinal direction. As a part of the support member 2, a hinge portion 4 that fixes the support member 2 to a mounting position T of a building or the like so as to be rotatable in a direction substantially orthogonal to the installation surface of the step 6 of the ladder portion 1 (details will be described later). Is provided).

  The ladder portion 1 includes a pair of side plates 5 made of a channel material having a U-shaped cross section, and a plurality of steps 6 that are horizontally passed between the side plates. Each side plate 5 is provided with a handrail 8. A wheel 7 is attached to the lower end of each side plate 5 so as to be rotatable about an axis parallel to the axis of the hinge portion 4 (the rotation axis of the ladder portion). The wheel 7 is provided with a stopper 3 that selectively inhibits the rotation of the wheel 7. The stopper 3 is, for example, a stopper lever provided on the side surface of the wheel and an abutment (not shown) that contacts and separates from the wheel 7 or the rotation axis of the wheel 7 in conjunction with the movement (here, rotational movement) of the stopper lever. It can comprise with a member. 1 to 3, only the stopper lever is shown.

  As shown in FIGS. 4 and 5, the support member 2 is arranged to open inward in a shape that can be engaged with the side plate 5 having a U-shaped cross section that opens outward. A pair of U-shaped support member bodies 9 are provided. On both side walls 10 of the support member main body 9, three rollers 12 provided so as to sandwich one side wall 11 of the ladder part side plate 5 are provided. That is, two rollers 12 are disposed on one side wall 10 of the support member main body 9, and one roller 12 is disposed on the other side wall 10 between the two rollers 12. The hinge portion 4 is formed on the mounting position T side (building side) of the support member 2. The hinge portion 4 is composed of a pair of hinges, and hinges the support member 2 and the mounting position T so as to be vertically rotatable. Among the hinges, a member fixed to the attachment position T with a bolt or the like is disposed within the width of the ladder portion 1 in the short direction. For this reason, if this attachment target has at least a space corresponding to the width of the ladder portion in the short direction, the retractable trap can be installed.

  On the other hand, in this embodiment, as shown in FIGS. 1 and 2, a rope 16 having a hook 17 at the tip is fastened near the attachment position T. With this configuration, as shown in FIG. 6, the ladder portion 1 (see FIG. 2) in the upright state is slid upward, and the hook 17 is inserted into the ring portion 15 provided at the lower portion of the ladder portion 1. The ladder part 1 can be held at a predetermined height. The length of the rope 16 is determined according to the height at which the ladder portion 1 is held.

  When using the retractable trap having the above configuration, first, in the retracted state shown in FIG. 6, the hook 17 is detached from the ring portion 15, and the ladder portion 1 is lowered to the ground as shown in FIG. Then, as shown in FIG. 1, the lower portion of the ladder portion 1 is pulled out until an angle that makes it easy to move up and down in a direction away from a building or the like, and the wheel 7 is disabled by the stopper 3 at that position. Thereby, the ladder part 1 is fixed to the said position.

  In the retractable trap of the present embodiment, the ladder part 1 is rotatable and slidable with respect to the mounting position T by the support member main body 9 and the hinge part 4, and as shown in FIG. It is possible to use in a state where the lower part of the door is pulled out and inclined away from the building or the like. For this reason, even if the user releases his / her hand, the user can safely raise and lower the trap. In addition, as shown in FIG. 1, the ladder unit 1 is leaned against the ground, so that a stepladder or the like is unnecessary.

  Further, the retractable trap of the present embodiment can slide the ladder part 1 upward in the longitudinal direction at any position even in the process of pulling out the lower part of the ladder part 1 from a building or the like. For this reason, even if there is an obstacle such as a pipe on the ground while moving the trap from the upright position to the use position, the obstacle 1 can be obtained by sliding the ladder portion 1 upward in the longitudinal direction. Can be avoided.

  On the other hand, after the use of the trap, the fixing of the wheel 7 by the stopper 3 is released, and then the lower part of the ladder part 1 is moved in a direction approaching a building or the like to bring the ladder part 1 into an upright state. Further, as shown in FIG. 6, the ladder unit 1 can be compactly stored at a height that does not get in the way by being slid upward and moved to a required height and held by the hook 17. Note that it is not essential to store the ladder unit 1 by moving the ladder unit 1 upward. The ladder unit 1 may be stored with the wheels 7 fixed by the stoppers 3 when the ladder unit 1 is in an upright state.

  The present invention is not limited to the embodiments described above, and various modifications and applications are possible within the scope of the effects of the present invention. For example, in the above description, a configuration has been described in which the operator moves the ladder portion upward by lifting, but a configuration in which the ladder portion is moved by the winch 13 may be employed as illustrated in FIG. 7. For example, in FIG. 7, the rope 16 pulled out from the manual winch 13 fixed to the building side is connected to the ring portion 15 below the ladder portion 1 via two pulleys 14 formed in the vicinity of the attachment position T. Is concluded. In this configuration, the ladder portion 1 can be fixed at an arbitrary slide position by prohibiting the rope 16 from being pulled out by the ratchet mechanism provided inside. That is, it is possible to hold the ladder portion 1 at an arbitrary height as shown in FIG. Further, by releasing the ratchet mechanism of the winch 13 so that the rope 16 can be pulled out, the ladder portion 1 can be moved to the use position.

  The present invention has an effect that the retractable trap can be installed in an extremely small space, and is useful as a retractable trap.

The side view which shows the state at the time of use of the retractable trap in one Embodiment of this invention The side view which shows the state which stood up the retractable trap in one Embodiment of this invention The front view which shows the retractable trap in one Embodiment of this invention The side view which shows the supporting member of the retractable trap in one Embodiment of this invention The top view which shows the supporting member of the storage type trap in one Embodiment of this invention The side view which shows the state which accommodated the stowable trap in one Embodiment of this invention. The front view which shows the modification of the retractable trap in one Embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ladder part 2 Support member 3 Stopper 4 Hinge part 5 Ladder part side plate 6 Step 7 Wheel 8 Handrail part 9 Support member main body 10 Support member main body side wall 11 Side wall of ladder side plate 12 Roller 13 Winch 14 Pulley 15 Ring part 16 Rope

Claims (1)

A ladder section of a predetermined length,
A support member for supporting the ladder portion so as to be rotatable in a direction substantially orthogonal to a step arrangement surface of the ladder portion and slidable in a longitudinal direction by a hinge portion attached to an attachment target within the width of the ladder portion; ,
A wheel provided at a lower end of the ladder portion so as to be rotatable around an axis parallel to a rotation axis of the ladder portion;
A stopper that selectively inhibits rotation of the wheel;
A retractable trap with a

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