JPS64267B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carrier with a stepladder for transporting and displaying products used in supermarkets and the like.

Conventionally, in supermarkets, etc., when a transport vehicle is brought into a designated location and the products loaded on the transport vehicle are displayed on display shelves, etc., when the products must be displayed in a high place, stepladders, step stools, etc. These items had to be brought in to perform the necessary work, and after the work was completed, they had to be stored back in their original locations, which required a lot of time and effort.

The present invention was proposed in order to solve such problems, and the upper ends of the left and right sides of the groove-shaped rear leg piece are respectively fixed to the left and right sides of the rear end of the stepladder top plate, and the front end of the top plate is The upper ends of a pair of left and right front leg pieces are pivotally connected to the left and right sides of the section via pins, and the upper ends of the left and right side pieces of the groove-shaped arm are respectively attached to the left and right sides of the groove-shaped rear leg piece via pins. A lower horizontal piece that is pivotally attached and connects the lower ends of the left and right sides of the groove-shaped arm is rotatably attached to the bottom plate of the truck of the carrier via a bearing metal fitting, and is attached to each of the left and right front and rear pieces. The upper ends of the left and right front stays are respectively pivotally attached via pins, and the upper ends of the left and right rear stays are pivotally attached to the left and right sides of the groove-shaped rear leg piece via pins, respectively. The present invention relates to a transport vehicle characterized in that the lower end of each rear stay is pivotally connected to a portion above the lower end of each of the left and right front stays via pins, respectively.

Since the present invention is configured as described above,
A groove-shaped arm, the upper ends of which are pivotally connected to the left and right sides of the groove-shaped rear leg piece, is rotatably mounted via a bearing metal fitting provided on the bottom plate of the carrier. When the groove-shaped arm is rotated toward the transport vehicle around the lower horizontal piece that connects the lower ends of the left and right sides, the rear leg piece and the groove-shaped arm are folded almost vertically, and the transport vehicle is rotated. At the same time, one pair of left and right front leg pieces are suspended vertically from the top plate of the stepladder, and at the same time, the front leg pieces of each pair are stored between the front leg piece and rear leg piece of each pair. The stay and the rear stay are folded approximately vertically, thus folding the stepladder into a small volume on the side of the carrier.

When the stepladder is to be unfolded and used, the groove-shaped arm is rotated forward in the opposite direction, and when the stepladder top plate is pulled out to the outside of the carrier, the rear leg piece and the front leg piece are separated. The lower end of the pair of front stays interposed between them, which extends beyond the pivot point with each rear stay, first contacts the floor, and at that time, the upward reaction force generated at the lower end of the front stay on the floor Therefore, the pivot joints of the front and rear stays of each pair are pushed up, and the front leg pieces are spread out around the pivot joints to the stepladder top plate, so that both the front and rear leg pieces land on the floor in a stable state. , the stepladder is set on the floor in a stable condition.

As described above, according to the present invention, it is possible to store and take out the stepladder in the transport vehicle with a single touch, and the stepladder is unfolded in a stable state when in use, and is stored inside the transport vehicle in a folded state. The present invention has many advantages, such as increasing the capacity of the transport vehicle.

The present invention will be described below with reference to the illustrated embodiments.
Reference numeral 1 denotes a bottom plate of the transport vehicle A, 2 a top plate supported via a pair of pillars 3 provided at the front and rear ends of the bottom plate 1, 4 a wheel, and a hook 5 provided on the pillar 3. ing.

Reference numeral 6 designates the top plate of the stepladder B. Left and right side pieces 7a, 7a of a groove-shaped rear leg piece 7 are fixed on both sides of the rear end, and pins 9 are attached to the upper ends of the left and right front leg pieces 8, 8 on both sides of the front end, respectively.
It is pivotally connected via.

A pin 9 of this pivot portion protrudes laterally and is adapted to be engaged with the hook 5 when the stepladder B is stored.

The upper ends of the left and right side pieces 10a, 10a of the groove-shaped arm 10 are pivotally connected to the side pieces 7a, 7a of the groove-shaped rear leg piece 7 via pins 11, and the lower ends of the both side pieces 10a, 10a of both arms 10 A rod-shaped horizontal member 10a with a circular cross section connecting the parts is loosely inserted into a bearing metal fitting 12 fixed to the bottom plate 1 of the carrier A so as to be freely rotatable.

Both sides of a footboard 14 are fixed to the pair of front leg pieces 8 via pins 13, and the upper ends of front stays 15 are rotatably supported on each of the pens 13. The lower ends of the left and right rear stays 17, whose upper ends are pivotally connected to the left and right side pieces 10a, 10a via pins 16, respectively, are attached to the left and right front stays 1.
A pin 18 is provided above the lower end portion 15a in 5.
It is pivotally connected via.

Since the illustrated embodiment is constructed as described above, after transporting the transport vehicle A loaded with luggage C with the stepladder B folded and stored, to a predetermined position, the top plate 6 of the stepladder B is Release the engagement between pin 9 and hook 5 by lifting lightly as shown in
When you pull out the top plate 6 forward as shown by the arrow in the figure,
The groove-shaped arm 10 rotates forward about the bearing hardware 12 on the bottom plate 1 of the carrier A. When the stepladder B is lowered from this state onto the floor D as shown in FIG. 6, the tip 15a of the front stay 15 first comes into contact with the floor D as shown in FIG. An upward force acts on the pin 18 of the pivot joint of the front stay 15 and rear stay 17 due to the reaction force R,
A force that expands outward as shown by the arrow is applied to the pivot pins for the rear leg pieces 8 and leg pieces 7 of each of the stays 15, 17, and the stepladder B is unfolded on the floor D.

By performing the operation opposite to the above, both side pieces 7a of the groove-shaped rear leg piece 7 and both side pieces 10a of the groove-shaped arm 10 are removed.
are folded almost vertically, the front leg piece 8 hangs down from the top plate 6 of the stepladder, and a pair of front and rear stays 15, 17 are folded almost vertically between the front leg piece 8 and the rear leg piece 7. The stepladder B is thus folded into a small volume between the top plate 2 and the bottom plate 1 of the carrier A.

[Brief explanation of drawings]

1 and 2 are perspective views of essential parts of the stepladder-equipped transport vehicle according to the present invention when the stepladder is in use and when the stepladder is stored, respectively; FIG. 3 is a side view of the stepladder portion; and FIG. 4 6 to 6 are side views showing the process of unfolding the stepladder, and FIG. 7 is a partially enlarged view of FIG. 6. A...Carrier, B...Stepladder, 1...Bottom plate, 6...
... Stepladder top plate, 7 ... Rear leg piece, 7a ... Left and right side pieces, 8 ... Front leg piece, 9 ... Pin, 10 ... Groove arm, 10a ... Lower horizontal piece, 10b ... Left and right side piece, 11...Pin, 12...Bearing hardware, 13...
...pin, 15...front stay, 15a...lower end of front stay, 16...pin, 17...rear stay, 18...pin.

Claims (1)

[Claims] 1. The upper ends of the left and right side pieces 7a of the groove-shaped rear leg piece 7 are respectively fixed to the left and right sides of the rear end of the stepladder top plate 6, and the upper ends of a pair of left and right front leg pieces 8 are fixed to the left and right sides of the front end of the top plate 6. The upper ends of the left and right pieces 10b of the groove-shaped arm 10 are pivotally connected to the left and right pieces 7a of the groove-shaped rear leg piece 7 via pins 11, respectively. A lower horizontal piece 10a connecting the lower ends of the left and right pieces 10b of the groove arm 10 is rotatably attached to the bottom plate 1 of the truck of the carrier via a bearing metal fitting 12, and attached to each of the left and right front leg pieces 8. Each left and right front stay 1
5 are pivotally connected via pins 13, and the upper ends of the left and right rear stays 17 are pivotally attached to the left and right side pieces 7a of the groove-shaped rear leg piece 7 via pins 16, respectively. The lower end of each rear stay 17 is connected to the lower end portion 15 of each of the left and right front stays 15.
A transport vehicle characterized in that the vehicle is pivotally connected via pins 18 to the upper portions of the vehicle.