JP6375434B1 - Tarup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a trapping that is easy to get on and off even if a space for getting on and off is narrow. SOLUTION: A pair of supports 21, 22, a plurality of shafts 31 to 33 rotatably supported by a pair of supports 21, 22 and a plurality of shafts 31 to 33, respectively. In order to take the posture in which each of the treads 41 to 43 protrudes and the posture in which the treads 41 to 43 are retracted by synchronously rotating the treads 41 to 43, the plurality of shafts 31 to 33, and the plurality of treads 41 to 43, A connecting member 10 for connecting a rotating body composed of a plurality of shafts 31 to 33 and a plurality of treads 41 to 43; hooks 51 and 52 provided on a pair of support bodies 21 and 22 for hanging on a mounting target; The tread plates 41 to 43 are alternately biased left and right as viewed from the front. [Selection] Figure 1

Description

  The present invention relates to a trap for getting on and off a gondola or various vehicles, for example.

  For example, a tarp is used to get on and off a gondola installed at a construction site of a building, a tractor and other various vehicles. Most of these types of traps are not permanently attached, but are detachable as needed. In addition, for example, in the case of a turret that gets on and off a gondola installed at a building construction site or the like, there is a restriction on the space to get on and off, and it is desirable that the structure be easy to get on and off even in a narrow space.

  An evacuation ladder is described in Patent Document 1 as being similar to this type of trap. In this escape ladder, both ends of a plurality of treads are rotatably connected between a pair of struts, and the pair of struts and the plurality of treads are relatively rotated so that the pair of struts can be expanded and contracted. The tread plate is a so-called ladder step, and is a cross-shaped member passed between the columns.

  Patent Document 2 describes a ladder that can be lifted when not in use and can be inclined when in use. A support, a plurality of footboards, and a connecting rod constitute a parallel link, and the footboards are in a horizontal posture in an inclined manner, and the footboards are in a vertical posture together with the pillars when flipped up.

  Patent Document 3 describes a work vehicle with a lifting device. The lifting device can take a retracted posture in which the main body stands up and a deployed posture that is inclined so that the lower end of the main body is positioned on the side of the vehicle body. In the retracted posture, the grip portion approaches the main body and is in a folded state, and in the deployed posture, the grip portion is separated from the main body.

JP 2003-82968 A JP 2003-328671 A JP 2017-43112 A

  The evacuation ladder described in Patent Document 1 can be attached to the ladder even if the front space is narrow. However, even if it is a tread board, it is just a pedestrian shape, so you cannot lift it with tools or materials in your hand.

  Since the ladder described in Patent Document 2 is used to flip up the ladder when not in use, when the ladder is mounted on a vehicle, a gondola, or the like, the ladder becomes an obstacle during work. Moreover, when using a ladder, since it takes the inclination form of an elevating device, a large space is required in front of the ladder, and it cannot be used under conditions where the space is limited.

  The lifting device mounted on the work vehicle described in Patent Document 3 also has a condition in which the ladder is obstructive during work, and when the ladder is used, a large space is required in front of the ladder and the space is limited. However, there is a difficulty that it cannot be used.

  An object of the present invention is to obtain a trap that is easy to get on and off even if the space to get on and off is narrow.

The trap according to the present invention is
A trap that can be hung on a wall,
A pair of supports;
A plurality of shafts that are rotatably supported by the pair of support members at an interval and whose one end is bent in a crank shape;
A tread board integrally coupled to each of the plurality of shafts;
Said plurality of axes and rotated synchronously said plurality of step boards, said each step board, in order to assume the attitude of retracting the attitude perpendicular direction to protrude in the horizontal direction with respect to the ground plane, the plurality of A connecting member for connecting a rotating body composed of a shaft and the plurality of treads;
Hooks provided on the pair of supports for hanging on the walls ;
Have
One end portion of the plurality of shafts bent into a crank shape includes a portion extending in a direction perpendicular to the main body portion of the shaft and parallel to the protruding direction of each tread plate, and a portion extending in parallel to the main body portion of the shaft. Have
The pair of supports, the plurality of shafts, the plurality of treads, and a connecting member that connects one end of the plurality of shafts bent into a crank shape constitute a parallel link mechanism,
The most characteristic feature of the tread is that it is alternately biased left and right when viewed from the front.

  Since the plurality of treads are alternately biased to the left and right as viewed from the front, the feet can be placed on the treads from the side of the trap and can be attached to the trap even if the space on the front of the trap is narrow. Each tread can be retracted when the lap is not used, and each tread can be prevented from getting in the way when the attachment target of the lap is moved.

It is a perspective view which abbreviate | omits the operation member and shows embodiment of the trap concerning this invention. It has been done. It is a front view of the said trap. It is a partial expanded left sectional view of the above-mentioned trap. It is a top view of the said trap. It is a partial enlarged front view which shows the mode of the operation member and holding mechanism which the said trap has. (A) The partial enlarged bottom view which shows a mode that an adjuster is connected with the bottom face of the support body which the said trap has, (b) The partial enlarged front view which shows the mode of the said adjuster.

  Hereinafter, embodiments of a trap according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the trap 1 includes a pair of supports 21, 22, three shafts 31, 32, 33, three treads 41, 42, 43, and a connecting member 10. , And connecting members 71, 72, 73. The wrap 1 is used by being hooked to an attachment target such as a gondola installed at a construction site of a building, for example. Further, the trap 1 can take a posture in which the tread plates 41 to 43 protrude forward and a posture retracted in the depth direction by a parallel link mechanism described later. In FIG. 1, the tread plates 41 to 43 are in a posture of projecting toward the front in the figure.

  The support bodies 21 and 22 are substantially quadrangular rod-like members, and are arranged in pairs on the left and right in a front view. The left side support body 21 arranged on the left side in front view extends upward from the right side support body 22 arranged on the right side. The portion extending upward functions as a grip when the elevator 1 moves up and down. In addition, this structure has one support body 22 obstructed when approaching from the upper part of the trap 1 or exiting from the upper part of the trap 1, compared with the structure in which both the support bodies 21 and 22 are extended. Instead, the user can use the wrap 1 smoothly.

  Hooks 51 and 52 hooked to the upper end of the front wall such as a gondola are provided on the back side of the supports 21 and 22, respectively. Each of the hooks 51 and 52 has a shape in which two substantially quadrangular prisms having the same thickness as the supports 21 and 22 are connected at a substantially right angle and bent downward at a substantially right angle. In the support body 22, the hook 52 is formed continuously with the upper end of the support body 22. In the support body 21, the hook 52 is formed in the middle of the length direction of the support body 21, and the upper end of the support body 21 extends beyond the position of the hook 52.

  Note that the two bars constituting the hooks 51 and 52 may be coupled at a wider angle than at a right angle. According to this configuration, the hooks 51 and 52 can be hooked even if the width of the front wall of the gondola varies.

  The pair of support bodies 21 and 22 support a plurality of shafts 31, 32 and 33 so as to be rotatable at regular intervals in the vertical direction. The base end portions of the treads 41, 42, 43 are integrally coupled to the shafts 31, 32, 33 between the pair of supports 21, 22, respectively. Accordingly, the shaft 31 and the tread plate 41, the shaft 32 and the tread plate 42, and the shaft 33 and the tread plate 43 each constitute a rotating body. The treads 41, 43 are disposed between the pair of supports 21, 22 when viewed from the front, and the treads 42 are biased to the right. In other words, the tread boards 41, 42, and 43 are alternately biased left and right as viewed from the front.

  As shown in FIG. 2, tread board abutting portions 91 and 93 project from the inner side surface of the support body 21, that is, the surface facing the support body 22. Further, a tread board abutting portion 92 projects from the inner side surface of the support body 22, that is, the surface facing the support body 21. The tread plate abutting portions 91 and 93 are disposed above the tread plates 41 and 43, respectively, and the tread plate abutting portion 92 is disposed above the tread plate 42. The tread board abutting portions 91 and 93 are in positions where the upper surfaces of the tread boards 41 and 43 abut in a posture in which the tread boards 41 and 43 are retracted, respectively. The tread board abutting portion 92 is in a position where the upper surface of the tread board 42 abuts in a posture in which the tread board 42 is retracted.

  The tread board contact portions 91 to 93 restrict the tread boards 41 to 43 from rotating in the depth direction beyond the support bodies 21 and 22 when the tread boards 41 to 43 rotate in the retracting direction. At this rotation restricting position, the tread plates 41 to 43 take a posture of rising in parallel with the length direction of the supports 21 and 22.

  The shafts 31, 32, and 33 are elongated cylindrical members, and are arranged in parallel with each other at intervals in this order from above. The shafts 31, 32, and 33 are arranged in a direction orthogonal to the length direction of the supports 21 and 22, respectively, and at a constant mutual interval.

  Both end portions of the shafts 31, 32, and 33 are rotatably supported by the support bodies 21 and 22, respectively. Both end portions of the shafts 31, 32, and 33 are inserted into through holes 211, 221, 212, 222, 213, and 223 provided in the supports 21 and 22, respectively. Appropriate stoppers are attached to the shafts 31, 32, and 33 at positions close to the outer surfaces of the support bodies 21 and 22 so that the shafts are not displaced from the left side support body 21 due to axial displacement. It has been. For example, a nut or a stop ring is used as the stopper.

  The right end sides of the shafts 31, 32, and 33 as viewed from the front side of the wrap 1 are bent at two right angles in a crank shape. Each shaft 31, 32, 33 is bent in a crank shape, and thus has a portion extending in a direction perpendicular to the respective main body portion and a portion extending in parallel with the main body portion. The portions of the shafts 31, 32, 33 extending in the direction perpendicular to the main body portions extend in parallel with the protruding directions of the respective tread plates 41, 42, 43 from the shafts 31, 32, 33. The right end of each shaft 31, 32, 33 extends parallel to the main body portion of these shafts. The right end portions of the shafts 31, 32, and 33 are connected by the connecting member 10.

  The connecting member 10 is a flat plate-like member, and has through holes 101, 102, 103 through which the right ends of the shafts 31, 32, 33 are inserted at the same interval as the mutual interval of the shafts 31, 32, 33. Therefore, the shaft 31 and the tread plate 41, the shaft 32 and the tread plate 42, and the shaft 33 and the tread plate 43 that are integrally coupled to form the three rotating bodies rotate synchronously while taking the same posture. Nuts 104, 105, and 106 are screwed into the right ends of the shafts 31, 32, and 33 so that the connecting member 10 does not come off the shafts 31, 32, and 33.

  The treads 41, 42 and 43 are substantially flat members. The treads 41, 42, and 43 can rotate in a range of about 90 degrees from the above-described retracted posture standing up in the vertical direction to the posture protruding in the horizontal direction from the front surfaces of the supports 21 and 22. The user of the lap 1 can raise and lower the lap 1 by placing his / her feet on the upper surfaces of the treads 41, 42, 43 when the treads 41 to 43 are in a projecting posture.

  As already explained, the tread plates 41, 42, 43 are alternately biased left and right as viewed from the front. According to the configuration of the present embodiment, the user uses the left foot on the left treads 41 and 43 and the right foot on the right tread 42 for use. Since the treads 41, 42, 43 have a planar spread for placing their feet, and are biased alternately to the left and right so that the left and right feet can be naturally placed, they are easy to move up and down. Further, since the left foot can be placed on the tread 41 or 43 on the left side from the side of the tarp 1 and attached to the tarp 1, even in a narrow place where the space on the front side of the tarp 1 is limited Easy to move up and down.

  According to this configuration in which the treads 41 to 43 can be retracted in the depth direction of the trap 1, the dimension in the depth direction of the trap 1 can be reduced and the space can be saved when the tarp 1 is not used for raising and lowering. The gondola on which the lap 1 is hooked is often used, for example, when the lap 1 is used as a gondola because it often gets on and off from a scaffold with a depth of about 40 cm, for example.

  Further, since the treads 41 to 43 can be retracted in the depth direction while being hung on the gondola, it is not obstructed without removing the trap 1 from the gondola each time, and the space in front of the trap 1 is smoothly provided. Can pass.

  As shown in FIGS. 2 and 3, each of the treads 41 to 43 has a pair of ribs 411 and 412, 421 and 422, 431 and 432 on the bottom surface. Since the ribs 411 and 412, 421 and 422, 431 and 432 have the same shape, the rib 411 protruding from the tread 41 will be described here. The rib 411 is a substantially trapezoidal flat plate, and the side surface is orthogonal to the top surface and the bottom surface. The upper surface of the rib 411 is fixed to the bottom surface of the tread plate 41. A side surface of the rib 411 that is orthogonal to the upper surface is in contact with a connecting member 71 described later in a posture in which the tread plate 41 is projected.

  As shown in FIGS. 1 and 3, the connecting members 71, 72, and 73 are elongated flat plate-like members that are fixed to the supports 21 and 22 at both ends. The connecting members 71, 72, and 73 are fixed to the front lower side of the shafts 31, 32, and 33, respectively. The connecting member 71 is fixed so that the plane faces the front of the trap 1. The side surfaces of the ribs 411 and 412 are in contact with the flat surface of the connecting member 71 in a posture in which the tread plate 41 is projected.

  The connecting members 71, 72, 73 integrally couple the pair of support bodies 21, 22 and reinforce them so that the trap 1 is not twisted. The connecting members 71, 72, and 73 are arranged so that the ribs 411 and 412, 421 and 422, and 431 and 432 are brought into contact with each other in the posture in which the treads 41, 42, and 43 are projected, so The rotation of the shafts 31, 32, 33 is restricted so that is substantially horizontal. That is, the connecting members 71, 72, 73 also serve as stoppers for the treads 41, 42, 43.

  The shape of the connecting member is not limited to a flat plate shape, and may be a polygonal column or a cylinder.

  The connecting member 10 synchronously rotates the three rotating bodies, that is, the tread plate 41 and the shaft 31, the tread plate 42 and the shaft 32, and the tread plate 43 and the shaft 33 so that the tread plates 41, 42, and 43 protrude and retract. Can be taken. In other words, the pair of support bodies 21 and 22, the plurality of shafts 31 to 33, the plurality of step boards 41 to 43, and the connecting member 10 constitute a parallel link mechanism.

  In the present embodiment, there are three shafts, treads, and connecting members, but two or four or more members may be used.

● Operation member 11 and holding mechanism 80
As shown in FIGS. 4 and 5, the shaft 31 includes an operation member 11 for synchronously rotating the plurality of treads 41, 42, 43. The operation member 11 is a round bar that can be manually operated by the user, and is fixed between the support 22 and the connecting member 10 so as to be orthogonal to the shaft 31. The operation member 11 can rotate about 90 degrees, and can take a posture extending to the front side and a posture rising upward. The operation member 80 extends to the front in a posture in which the plurality of treads 41, 42, and 43 protrude. In addition, the plurality of treads 41, 42, and 43 are raised upward in a retracted posture.

  When the operation member 11 is rotated, the parallel link mechanism operates integrally, and the treads 41, 42, and 43 can be rotated synchronously.

  In addition, the operation member 11 may be a square bar, or an appropriate configuration may be added so that the user can easily operate.

  As shown in FIGS. 4 and 5, a holding mechanism 80 that holds the operation member 11 is provided on the side surface of the support 22. The holding mechanism 80 has a substantially rectangular parallelepiped shape, and is fixed above the through hole 221 of the support 22 through which the shaft 31 is inserted.

  The holding mechanism 80 is formed with a recessed portion 81 released on the front side of the trap 1. The width of the recess 81 corresponds to the outer diameter of the operation member 11. The holding mechanism 80 is provided at a position where the operation member 11 is fitted into the recess 81 when the operation member 11 is in a posture of rising upward.

  The holding mechanism 80 includes holding portions 82 and 83 that are urged in a direction to advance toward the center of the recess 81. The holding parts 82 and 83 are opposed to each other. Each of the holding portions 82 and 83 is cylindrical, and is urged as described above by an elastic body such as a spring (not shown). When the operation member 11 is in a posture in which the operation member 11 stands upward, the operation member 11 enters the recess 81 and is held between the holding portions 82 and 83.

  In changing the treads 41 to 43 between the protruding posture and the retracted posture, any member included in the parallel link mechanism may be moved in addition to the operation by the operation member 11. For example, one of the tread boards 41 to 43 may be grasped and moved by hand, or the connecting member 10 may be grasped and moved.

● Adjusters 61, 62
As shown in FIGS. 1 and 6, the adjusters 61 and 62 are members coupled to the lower ends of the supports 21 and 22. Since the adjusters 61 and 62 have the same shape, the adjuster 61 coupled to the lower end of the support 21 will be described as an example here.

  As shown in FIG. 6A, the adjuster 61 includes a shaft 612 on which a screw is formed, a pad 614 coupled to the lower end of the shaft 612, an upper nut 611 and a lower nut 613 fitted to the shaft 612. And having. The pad 614 has a substantially truncated cone shape, and its upper surface is connected to the lower nut 613. The bottom surface of the pad 614 is in contact with the installation surface 100 when the trap 1 is installed.

  As shown in FIG. 6B, a support nut 711 fitted into the shaft 612 is embedded in the lower end of the support 21, and the upper end of the shaft 612 is fitted into the support nut 711.

  By rotating the upper nut 611 and the lower nut 613, the distance between the upper nut 611 and the lower nut 613 can be adjusted, and the amount of protrusion of the adjuster 61 from the support body 21 can be adjusted.

  Note that the shaft 612 may be configured by, for example, an elastic member, and the shaft 612 may be biased against the installation surface 100 and the pad 614 may come into contact. According to this configuration, it is not necessary to finely adjust the lengths of the adjusters 61 and 62.

  In this description, the description has focused on the trap that is hung on a gondola installed at a building construction site or the like. However, the trap according to the present invention is not limited thereto, and an appropriate configuration for a user such as a vehicle to get on and off. It is applicable to.

DESCRIPTION OF SYMBOLS 1 Turlap 10 Connecting member 21 Support body 22 Support body 31 Axis 32 Axis 33 Axis 41 Tread board 42 Tread board 43 Tread board 51 Hook 52 Hook

Claims (7)

A trap that can be hung on a wall,
A pair of supports;
A plurality of shafts that are rotatably supported by the pair of support members at an interval and whose one end is bent in a crank shape;
A tread board integrally coupled to each of the plurality of shafts;
Said plurality of axes and rotated synchronously said plurality of step boards, said each step board, in order to assume the attitude of retracting the attitude perpendicular direction to protrude in the horizontal direction with respect to the ground plane, the plurality of A connecting member for connecting a rotating body composed of a shaft and the plurality of treads;
Hooks provided on the pair of supports for hanging on the walls ;
Have
One end portion of the plurality of shafts bent into a crank shape includes a portion extending in a direction perpendicular to the main body portion of the shaft and parallel to the protruding direction of each tread plate, and a portion extending in parallel to the main body portion of the shaft. Have
The pair of supports, the plurality of shafts, the plurality of treads, and a connecting member that connects one end of the plurality of shafts bent into a crank shape constitute a parallel link mechanism,
The tread is a trap that is alternately biased left and right as viewed from the front.   The trap according to claim 1, wherein two of the supports are arranged in parallel with each other as a pair.   The trap according to claim 1 or 2, wherein the support body extends from a position of the hook and functions as a grip.   3. The trap according to claim 2, wherein only one of the supports, which is a pair of the two supports, extends beyond the position of the hook and functions as a grip.   The trap according to any one of claims 1 to 4, wherein an operation member for synchronously rotating the plurality of treads is provided on one of the plurality of shafts.   The trap according to any one of claims 1 to 5, wherein the pair of supports are integrally coupled by a connecting member. The lap according to claim 6, wherein the connecting member also serves as a stopper for restricting the rotation of each tread in a posture in which each tread projects.

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