JPH0769217A - Hand truck with bottom part capable of upward-swinging - Google Patents

Abstract

PURPOSE:To provide a conveying truck with which conveying efficiency at the time of merchandise delivery and conveying truck returning can be enhanced and an occupied space in storage can be decreased. CONSTITUTION:Respective constituent members of a hand truck are constituted of an aluminum alloy. A bottom frame 1 is formed into a one-side opening type wherein a front side is opened. A front side frontage dimension of the bottom frame 1 is formed larger than a rear side. A bottom plate 2 is pivoted to the bottom frame 1 in such a state that at least a front half part thereof is upward-swingable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand truck used for delivering merchandise from a merchandise distribution center to each store, and more particularly to a hand truck that can be nested when empty.

[0002]

2. Description of the Related Art In recent years, in supermarkets and chain stores, various products have been purchased in large quantities at product distribution centers, and the required amount of products has been distributed to each store for distribution. Then, in this case, various products are mixedly loaded on a carrier cart surrounded on three sides by fences, and the entire carrier cart is transported on a truck.

[0003]

In the conventional carrier truck, the bottom plate is configured to be capable of jumping up and swinging, and the left and right side frame portions are configured to be capable of folding and swinging around the rear vertical frame portion so as to be netted at the time of return. It was made of steel to reduce the volume. In this carrier, side frame members on the left and right side surfaces are pivotally supported on the left and right end portions of the rear side frame on the rear side so as to be swingable around the vertical axis, and the bottom wall is flipped up to the lower end of the rear side frame. It is rotatably supported, and at the time of return, the bottom wall is flipped up and oscillated, and then the side frame member is oscillated around the vertical axis to have a small volume. However, since the carrier is made of steel in this type, the weight of the carrier itself is heavy,
There is a problem that the amount of products loaded on one truck is small, the amount of goods to be transported is small, and the transportation efficiency of the truck is poor.

Therefore, in order to reduce the weight, it is conceivable that the frame member and the bottom plate are made of aluminum. However, in the case of aluminum, if there are many so-called joints, the strength cannot be sufficiently ensured, and therefore, it is possible to carry heavy goods that can be nested. When the trolley is made of aluminum, it cannot be carried out with the structure of the steel transport trolley as it is, and the structure is complicated due to the reinforcement of the joint parts. However, there is no conventional aluminum carrier that can be used for nesting. The present invention has been made in view of such a point, and an object of the present invention is to provide a transporting trolley capable of increasing the transportation efficiency at the time of supplying a product or returning the transporting trolley.

[0005]

In order to achieve the above-mentioned object, according to the present invention, a bottom plate is stretched on a bottom frame having wheels arranged on the bottom surface, and vertical columns are provided upright at four corners of the bottom frame. Each component of a hand truck that has vertical columns connected to each other on the side and rear faces by a crosspiece member is made of aluminum alloy, and the bottom frame is formed with one side open with the front side open, and the front side frontage of this bottom frame Is formed to be larger than the front face side front dimension, and the bottom plate is pivotally attached to the bottom frame in a state where at least the front half of the bottom plate can be flipped up and rocked.

[0006]

In the present invention, each constituent member is made of an aluminum alloy, and the bottom frame of the carriage is formed so that the front surface is open and the front surface side dimension is larger than the rear surface side dimension. Since the bottom plate is supported on this bottom frame in such a manner that at least the first half part can jump up and swing, the so-called joint part is only the flip-up swinging part of the bottom wall. Since the load is not concentrated on the swing fulcrum and the weight of the aluminum alloy bottom plate acts only on the swing fulcrum in the non-use posture, a simple support structure is sufficient. As a result, the structure of the carrier truck can be simplified, the weight of the carrier truck itself can be reduced, and the weight ratio of the carrier truck to the products can be reduced when the truck is mounted, and the total weight can be the same as the conventional one. If you do, you can carry a large amount of goods. Further, when the bottom plate is flipped up when the transporting trolley is not used, a space for inserting the second half of another trolley is formed in at least the first half of the trolley, so that a plurality of trolleys can be nested.

[0007]

1 is a perspective view, FIG. 2 is a vertical sectional side view at the bottom, and FIG. 3 is a schematic plan view. This trolley has a bottom frame with an open front.
(1), a bottom plate (2) stretched over the bottom frame (1), and a bottom frame
Vertical columns (3) standing up from the four corners of (1), horizontal rail members (4) that connect the vertical columns (3) to each other on the left and right side surfaces and the rear surface, and bridges between the horizontal rail members (4). Vertical bar member (5) and bottom frame
The wheel (6) fixed to the lower surface of (1)
Each component except (6) is made of aluminum alloy.

The bottom frame (1) is constructed by arranging two frame bodies (7) and (8) formed by a square pipe in a U-shape in a plan view so as to be positioned in front and back with the opening portions facing in the same direction. The outer dimension of the opening of the frame body (8) located on the rear side is slightly smaller than the inner dimension of the opening of the frame body (7) located on the front side. Further, the square pipe constituting the rear frame body (8) is lower than the height of the square pipe constituting the front frame body (7), and the upper surface is located in the same plane. The bottom frame (1) is formed by combining in the state of being.

The bottom plate (2) is composed of a rear bottom plate (9) arranged and fixed inside the rear frame body (8) and a front bottom plate (10) arranged in the front frame body (7). The front side bottom plate (10) is pivotally supported on the front side frame body (7) near the rear end thereof so as to be capable of jumping up and swinging. The front bottom plate (10) can be held in a use posture in which the upper surface is horizontal by receiving the left and right side portions on the swinging tip side by wheel support plates (11) described later.

The wheels (6) are vertical columns located on the front side.
Fixed leg wheel (12) located in the lower part of (3) and rear frame
The swing type leg wheel (13) fixed to the lower surface of (8) is attached to the rear frame body (8), and the swing type leg wheel (13) fixed to the rear frame body (8) is attached to the rear frame body (8). It is fixed to the inside of each of the left and right ends. The respective leg wheels (12) and (13) are fixed to the lower surfaces of the front and rear frame bodies (7) and (8) via wheel support plates (11). The wheel support plate (11) is formed so as to slightly project into the inner space of the front and rear frame bodies (7), (8).

Reference numeral (14) in FIG. 1 is a U-shaped connecting frame for preventing the left and right vertical columns (3) standing upright at the front end of the front frame (7) from being opened. This connecting frame (14) ) Is welded and fixed between the upper end surfaces of the left and right horizontal rail members (4) located at the upper end. (1
6) is an engaging pin projecting from the lower surface at the left and right front end portions of the front bottom plate (10), and (17) is a pin engaging hole provided transparently in the wheel support plate (11).

In the transportation cart constructed as above, the front bottom plate is used when the products are delivered from the product delivery center to each store.
Set (10) in a horizontal position. At this time, the front bottom plate (10)
The engaging pins (16) projecting from the lower surfaces of the left and right front end portions of the wheel engage with the pin engaging holes (17) of the wheel support plate (11), and the bottom plate (2)
Set to the use posture. Then, the products are stacked on the bottom plate (2) in multiple stages, and a plurality of trucks for transportation are loaded on the bed of the truck and delivered to each store.

At each store, a product is taken out from each carrier truck and the front bottom plate (10) is oscillated by a jump to switch to a non-use posture. Then, since the inner portion of the front frame body (7) becomes a space, the rear frame body of another transporting carriage is placed in this space portion.
(8) Insert the part. At this time, since the rear frame body (8) is formed of a square pipe having a low height, even if the wheel support plate (11) projects inward at the front end portion of the front frame body (7), The lower edge of the side frame body (8) can pass over the upper surface of the wheel support plate (11). In addition, the wheels (1
Since 3) is located inside the left and right side end portions of the rear frame body (8), the wheel (13) does not become an obstacle when moving forward and backward. As a result, the rear frame body (8) can be inserted into the front frame body (7), so that the number of N transportation carts is 1 + 0.
It can be stored in the depth dimension of 5 (N-1) units.
Therefore, a large number of trucks can be sent back when the trucks for transportation are returned from each store.

In this embodiment, vertical columns are erected at the connecting portions of the front and rear frame bodies (7) and (8) of the bottom frame (1), and a shelf is provided in the upper space portion of the rear frame body (8). You may make it arrange | position the plate so that the arrangement position can be changed.

4 and 5 show another embodiment of the present invention, in which a bottom plate (1) is formed in a taper shape of a front divergence with an open front side, and a bottom plate (2) formed in a rectangular shape. ), The rear part is pivotally attached to the rear end part of the bottom frame (1) so as to be capable of jumping up and swinging. Then, the bottom frame (1) is formed such that the frontage dimension at the rear end portion is smaller than the dimension between the inner surfaces of the left and right side frames at the center portion in the front-rear direction, so that the bottom frame (1) of the other bogie is between the left and right side frames. It is configured so that about 1/3 to 1/2 can be inserted into the formed space.

In the transportation cart constructed as described above, the bottom frame (1) has a taper shape with a front divergence.
Since (2) has a rectangular shape, with the bottom plate (2) set in the bottom frame (1), the left and right side edges of the bottom plate (2) and the bottom frame
Spaces shown on the left appear between the side frame part of (1) and the side of the bottom plate (2) because the cargo to be loaded on this carrier is a standard cardboard box. Even if there is a space between the edge portion and the side frame of the bottom frame (1), there is no problem in loading.

In the above embodiment, the carrying cart having only the bottom plate (2) has been described, but the shelf plate may be arranged so as to be foldable on the upper part.

[0018]

According to the present invention, since each constituent member is made of an aluminum alloy, the weight of the carrier truck itself can be reduced, and the weight ratio of the carrier truck to the products when the truck is mounted is reduced. Therefore, a large amount of goods can be transported when the total weight is the same as the conventional one. Further, the bottom frame of the carrier truck is formed so that the front surface is open and the front side front dimension is larger than the rear side front dimension, and at least the front half portion of the bottom plate can be oscillated on the bottom frame. Since it is supported in the state, if the bottom plate is flipped up when the transport dolly is not used, a space for inserting the second half of another dolly will be created in at least the first half of the dolly, so multiple dollies can be nested. A large number of trucks can be returned by one truck, and the space occupied during storage can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a vertical side view at the bottom.

FIG. 3 is a schematic plan view.

FIG. 4 is a schematic plan view of another embodiment.

FIG. 5 is a vertical sectional side view of a main part of another embodiment.

[Explanation of symbols]

1 ... Bottom frame, 2 ... Bottom plate, 3 ... Vertical column, 4 ... Horizontal cross member, 6 ... Wheel, 7.8 ... Bottom frame.

Continued Front Page (72) Inventor Satoshi Nakayama 2-7-1, Hatchobori, Chuo-ku, Tokyo Iwatani Sangyo Co., Ltd. Tokyo Head Office

Claims (3)

[Claims] 1. Wheels (6) are arranged on the lower surface of the bottom frame (1), a bottom plate (2) is stretched over the bottom frame (1), and four wheels of the bottom frame (1) are provided.
In a hand truck that has vertical columns (3) standing in the corners, and the vertical columns (3) are connected to each other by horizontal cross members (4) on the left and right side surfaces and the rear surface, each component of the hand truck is made of aluminum alloy. Then, the bottom frame (1) is formed into an open side with the front side open,
The bottom frame (1) is formed such that the front side front dimension is larger than the rear side side front dimension, and at least the front half of the bottom plate (2) can be flipped up and rocked so that the bottom plate (2) is A hand truck having a bottom plate portion pivotably attached to 1) and configured to be capable of jumping and swinging. 2. Two frame bodies (7) formed in a U-shape in a plan view.
Place (8) so that the openings are in the same direction
(1) is formed so that the outer dimension of the opening of one frame body (8) is slightly smaller than the inner dimension of the opening of the other frame body (7). (8) to the other frame
Claims in which both frame bodies (7) and (8) are fixed to the rear of (7), and the bottom plate (2) arranged on the frame body (7) having a large opening size is flipped up and swingably supported. A hand truck having the bottom plate portion according to item 1 configured to be capable of jumping and swinging. 3. The bottom frame (1) is formed in a taper shape that spreads forward, the bottom plate (2) is formed in a rectangular shape, and the bottom plate (2) is flipped up at a portion near the rear end of the bottom frame (1). A hand truck having a bottom plate portion according to claim 1, which is pivotally mounted so as to be swingable so as to be capable of jumping and swinging.