JPH0324386B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a vehicle for transporting goods, etc.

In recent years, the amount of products displayed in supermarkets and retail stores has tended to increase. For this reason, display cases are gradually becoming taller.

As the display case becomes taller, it is necessary to carry a carrier for carrying the products and a stepladder at the same time in order to display the products in the upper part of the case.

Figures 1 and 2 show a conventional carrier with a stepladder of this type, in which one end of the stepladder a is connected directly to the carrier b.
It is configured such that the other end is supported by two supporting legs c, and rotates around a pivot point d relative to the carrier b, and when not in use, it can be rotated as shown in Fig. 1. As shown in FIG. 2, it is folded and stored inside the transport vehicle b, and when in use, it is unfolded to the outside of the transport vehicle b, as shown in FIG.

Therefore, when using stepladder a, part of the load on stepladder a is applied to carrier b via pivot part d, and the wheels ef of carrier b rotate, resulting in an unstable state. Danger arises when displaying or taking out products from the upper part of the display case while riding on a.

Therefore, even if a brake device is installed on the wheel e on the stepladder side of the transport vehicle b, the wheel f on the opposite side rotates, resulting in an unstable state.

The present invention was proposed in order to solve these problems, and is a transport vehicle in which a top plate is supported on the top of front, rear, left and right pillars that are erected on a lower platform on which wheels are mounted. A rear leg piece is fixed to the rear end of the main body and the top pedestal of the stepladder, and a front leg piece is rotatably supported at the front end of the stepladder, and the rear end is attached to the lower base of the carrier body. The front end of a rotatably supported connecting rod is rotatably connected to the rear leg piece of the stepladder, and a locking portion of the top pedestal of the stepladder is arranged on the front support of the carrier body. and on the rear leg piece of the stepladder,
A stopper is provided that abuts against the upper surface of the connecting rod, and the lower end of the rear stay whose upper end is pivotally connected to the rear leg piece of the stepladder is pivotally connected to the stay whose upper end is pivotally attached to the front leg piece, and 1. A transport vehicle with a stepladder, characterized in that opposing ends of a pair of stay opening prevention pieces, each of which has one end pivotally connected to each stay, are pivotally connected between the rear stay and the rear stay.

Since the present invention is configured as described above,
When in use, the top pedestal of the stepladder is released from the locking part provided on the front support of the transport vehicle, and the stepladder is rotated around the pivot point by the connecting rod to the lower platform of the transport vehicle. When deployed in front of the carrier, the stepladder is supported on the floor by the front and rear legs independently of the carrier, so it can be used in a stable manner.

Furthermore, when storing the stepladder, the stepladder is rotated toward the carrier around the pivot portion of the connecting rod relative to the lower base of the carrier, and the top base of the stepladder is attached to the locking portion provided on the front support of the carrier. It is to be locked to. At this time, the pedestal of the stepladder and the rear support leg fixed to it are stored in the front part of the interior space of the carrier, and the leg piece pivoted to the front end of the pedestal approaches the front column of the carrier due to its own weight. It hangs vertically and is stored close to the rear leg of the stepladder.

Therefore, a large space is secured in the lower part of the transport vehicle.

Further, a stopper is provided on the rear leg piece of the stepladder, and when the stepladder is folded and stored, the stopper abuts against the upper surface of the connecting rod, thereby preventing the stepladder from idling and folding the stepladder. The tatami operation is performed smoothly.

Further, the lower end of the rear stay whose upper part is pivotally connected to the rear leg of the stepladder is pivotally connected to the upper stay whose upper end is pivotally connected to the front leg piece, and one end between the front and rear stays is pivotally connected to each stay. Since the opposite ends of the pair of stay opening stopper pieces are pivotally connected, each stopper piece prevents the front and rear leg pieces from opening too much, and even when a large load is placed on the top base of the stepladder, the stepladder remains stable. It never becomes unstable.

The present invention will be described below with reference to the illustrated embodiments.

A is a transport vehicle main body, and a top plate 4 is supported at the upper ends of front, rear, left and right pillars 3 erected on a lower base 2 on which a wheel 1 is mounted.

Reference numeral B designates a stepladder, and a rear leg piece 6 extends integrally with the rear end of the top pedestal 5, and the upper ends of a pair of front leg pieces 7 are pivotably attached to the front end. In the figure, reference numeral 8 denotes a rotating shaft rotatably inserted between both sides of the top pedestal 5, and the pair of front leg pieces 7 are fixed to the rotating shaft 8. Further, a step is attached between both front leg pieces 7. In addition, 6a in the figure is an opening provided in the plate-shaped rear leg piece 6, which reduces the weight of the rear leg piece 6.

Further, the upper part of a rear stay 10 is pivotally attached to the rear leg piece 6, and the upper end of a front stay 12, which has a cap 11 made of synthetic resin, rubber, etc. fitted to the lower end, is pivotally attached to the front leg piece 7. Stay opening stopper piece 1 whose one end is pivotally attached to the stay 10 and the front stay 12, respectively.
The opposite ends of 3 and 14 are pivotally connected.

15 is a U-shaped connecting rod, whose base end horizontal piece 1
5a is a bearing hardware 16 installed on the lower base plate 2
The bent ends of the side pieces 15b connected to the horizontal piece 15a are rotatably fitted into the sides of the rear leg piece 6.

Furthermore, stoppers 17 are provided on the side surfaces of the rear leg piece 6 to project against the upper surfaces of the both side pieces 15b of the connecting rod 15.

Further, a locking cylinder piece 18 is fitted and fixed to the front support column 3 of the transport vehicle A as a locking part of the top pedestal 5 of the stepladder, and the locking cylinder piece 18 is fitted with the top pedestal 5 of the rotating shaft 8. A hook 19 is provided in a protruding manner to which a side protrusion of the hook 19 engages and disengages.

In the figure, 20 is a cap made of synthetic resin, rubber, etc. that is fitted onto the lower end of the front leg piece 7.

Since the illustrated embodiment is constructed as described above, after the stepladder B is folded and stored in the transport vehicle A and the transport vehicle A is transported to a predetermined position, as shown in FIG. Grip the front edge of the pedestal 5 and rotate it counterclockwise around the tip pivot portions of both side pieces 15b of the U-shaped connecting rod 15 to rotate the rotating shaft 8.
Release the engagement between the protruding end from the rear leg piece 6 and the hook 19 of the locking cylinder piece 18, and then move the stepladder B to the transport vehicle A.
When the stepladder B is pulled out forward, the stepladder B rotates in the direction of the hour hand around the pivot of the horizontal piece 15a of the connecting rod 15 relative to the lower base plate 2 of the transport vehicle A (see Fig. 7).
The rear leg piece 6 of the stepladder B touches the floor, and the front leg piece 7
rotates in the counterclockwise direction about the pivot point relative to the top base plate 5, and the cap 20 at its lower end touches the floor. At the same time that the lower end cap 11 comes into contact with the floor, the stay opening stopper pieces 13 and 14 are deployed in a straight line between the stays 10 and 12. (See Fig. 8) According to the illustrated embodiment, the stepladder B folded and stored in the transport vehicle A is unfolded in front of the transport vehicle A and is completely set at the same time as being lowered onto the floor. Moreover, stepladder B is set on the floor independently of transport vehicle A, and is maintained in a stable state.

At this time, stay opening stopper pieces 13 and 14 are pivotally attached to the front and rear leg pieces 7 and 6 of the stepladder B, respectively, and between the pair of front and rear stays 12 and 10 that intersect in a V-shape.
Since the legs are stretched in a straight line and the leg pieces 7 and 6 are prevented from opening too much, the stepladder will not become unstable even if a large load is applied to the top pedestal 5.

Next, when storing the stepladder B in the transport vehicle A, grasp the front edge of the top pedestal 5 and lift it up. The rotating shaft 8 is rotated in the counterclockwise direction around the branch, and the protruding portion of the rotating shaft 8 from the side surface of the rear leg piece 6 is engaged with the hook 19 of the locking cylinder piece 18.

At this time, the front leg piece 7 is suspended vertically from the top pedestal 5 in parallel with and close to the front support 3 of the transport vehicle A due to its own weight, and the stepladder B has a small volume at the front of the transport vehicle A. It can be folded and stored. Therefore, transport vehicle A
The lower space can be used widely.

Further, as described above, when the stepladder B is folded and stored and rotated in the counterclockwise direction, the stopper 17 of the rear leg piece 6 collides with the upper surface of the both side pieces 15b of the U-shaped connecting rod 15, and the stepladder B This prevents the stepladder from idling in the counterclockwise direction around the tip pivot portions of the side pieces 15b, and allows the stepladder to be folded smoothly.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

1 and 2 are front views showing a conventional carrier with a stepladder when the stepladder is stored and when the stepladder is in use, respectively, and FIG. 3 shows an embodiment of the carrier with a stepladder according to the present invention. FIG. 4 is a side view, FIG. 5 is a partially cutaway plan view, and FIGS. 6, 7, and 8 show the stepladder from its folded and stored state to its unfolded state. FIG. A... Transport vehicle, B... Stepladder, 3... Support, 4... Top plate,
5... Top pedestal, 6... Rear leg piece, 7... Front leg piece, 8... Rotating shaft, 9... Step, 10... Rear stay, 12... Front stay, 13, 14... Stay opening stopper piece, 15...
Connecting rod, 16...Bearing hardware, 17...Stopper, 18
...Locking tube piece, 19...Hook.

Claims (1)

[Claims] 1 The main body of the transport vehicle has a top plate supported on the top of the front, rear, left and right pillars that stand on the lower platform on which the wheels are mounted, and the rear leg piece is fixed to the rear end of the top pedestal of the stepladder. , the front end is a stepladder with a front leg piece rotatably supported; A locking portion of the top pedestal of the stepladder is provided on the front support of the carrier body, and a locking portion of the top pedestal of the stepladder is provided on the rear leg portion of the stepladder, and a locking portion is provided on the rear leg portion of the stepladder so as to be able to rotate freely. A stopper is provided in contact with the stepper, and the lower end of the rear stay, whose upper end is pivotally connected to the rear leg piece of the stepladder, is pivotally connected to the stay whose upper end is pivotally attached to the front leg piece, and the lower end of the rear stay is pivotally connected to the stay, the upper end of which is pivotally connected to the front leg piece, and the lower end of the rear stay is pivotally connected to the stay, and the lower end of the rear stay A transport vehicle with a stepladder, characterized in that opposite ends of a pair of stay opening prevention pieces are pivotally connected at one end to each stay.