JPH09286335A - Bogie for container and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce production cost and to easily form a desired size by minimizing the number of parts. SOLUTION: A bogie for a container has casters 6 at four corners of a rectangular frame 1 thereof and the rectangular frame 1 comprises frames 5 which are integrally formed by frame members 2 composing a side of the rectangular frame 1 and corner members 3 composing a corner of the rectangular frame 1 and the frame member 2 of one frame 5 is connected to the corner member 3 of the other frame 5 to form a rectangular frame shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container truck that is used in, for example, a supermarket or the like, and is capable of stacking and transporting box-shaped containers made of plastic, metal or the like capable of accommodating products in multiple stages. The present invention relates to a trolley for a container and a method for manufacturing a trolley, which can easily manufacture different sized containers according to the size of the container.

[0002]

2. Description of the Related Art Conventionally, there are a wide variety of containers used as containers for various products in supermarkets, etc., and are placed and transported on container carts according to the type of business and application. Also, there are inconveniences that various trolleys for containers must be manufactured according to the size of the container, and in order to eliminate such inconvenience, JP-B-3-12608 (JP-A-61-13448).
A trolley for containers described in No. 1) is known.

That is, as shown in FIG. 9, the container truck of Jitsuhei 3-12608 has casters (not shown).
A vertical frame in which a plurality of mounting holes 31, ... for mounting a frame are formed at intervals in the carriage width direction and the carriage length direction on a corner member 30 to be mounted, and a large number of mounting holes 32, ... are formed at both ends. 33 and the horizontal frame 34 are slidably inserted into the corner member 30, and the corner member 30 is selected as appropriate.
The mounting hole 31 and the mounting holes 32 of the vertical and horizontal frames 33 and 34 are connected by a mounting tool such as a bolt to form a rectangular frame shape. In the container trolley having the above-mentioned structure, the trolley adapted to various containers can be formed by sliding the vertical and horizontal frames and changing the effective length of the frame.

[0004]

However, in the above-mentioned conventional container truck, there are three different types of members forming the rectangular frame of the truck: the corner member 30, the vertical frame 33, and the horizontal frame 34. There is a problem in that members are required, dies for forming the respective parts are required, and the ratio of the manufacturing cost of parts to the product cost of the truck is high. Further, since the attachments are attached to the attachment holes 31 and the attachment holes 32 which are formed in advance, the length of the carriage can be set only for each interval in which the holes 31 are formed.

Further, when assembling the respective members to manufacture a dolly, casters should be attached below the receiving plate 30a of the corner member 30, and both ends of the vertical and horizontal frames 33, 34 should be connected by the respective attachments. Since it has to be done, many steps of assembling work are complicated, and since the both ends of each frame 33, ... Are connected to the corner member 30 in the rectangular frame, at least 8 steps are required.
There is a problem in that there is a high probability that the connecting portion will be loosened or the like due to long-term use, since the connecting portion at the location is required.

The present invention has been made in view of the above-mentioned conventional problems, and by minimizing the number of parts, the manufacturing cost of the product can be suppressed and the product can be easily formed to a desired size. An object of the present invention is to provide a strong container trolley and a method for manufacturing the trolley.

[0007]

Means for Solving the Problems The present invention has been made to solve the above problems, and means for solving the problems relates to a trolley for a container, in which casters 6 are respectively provided at four corners of a rectangular frame 1. In the container truck provided, the rectangular frame body 1 comprises a frame member 2 forming one side portion of the rectangular frame body 1 and a corner member 3 forming one corner portion of the rectangular frame body 1 integrally. The frame members 5 are formed into a rectangular frame shape by connecting the corner members 3 of one frame member 5 to the frame members 2 of the other frame members 5, respectively.

The container trolley comprising the above means comprises a frame member 2 constituting one side of a rectangular frame 1 and a rectangular frame body.
Since the corner member 3 that constitutes one corner of 1 is integrally formed with the frame members 5, ..., There are four connecting portions of the rectangular frame body 1, which is a connecting portion as compared with the conventional container truck. Therefore, even if the rectangular frame 1 is used for a long period of time, the connecting portion of the rectangular frame 1 is not loosened or distorted. Further, dirt is generally easily attached to the gaps and the like that are inevitably formed in the connecting portion, but since the connecting portion is small, the portion where the dirt is attached is small.

Further, since the rectangular frame 1 is composed of four frame members 5, the number of parts for forming the rectangular frame 1 is minimized. That is, for example, the corner member 3 to which the caster 6 can be attached, as in the method for manufacturing a trolley according to claim 2.
Forming four frame members 5 in which the frame member 2 is integrally extended, and cutting the frame member 2 of the frame member 5 to a desired length from its tip 2d side, and after cutting the frame member 2.
By connecting the new tip 2d side of 2 to the corner member 3 of the other frame member 5, and similarly connecting all the frame members 5 to each other, four identical frame members 5 are formed and necessary. Accordingly, if the frame member 2 of the frame member 5 is cut, the rectangular frame body 1 having a desired size can be arbitrarily formed. In the conventional container truck, three types of members, a corner member, a vertical frame and a horizontal frame, are required to form rectangular frames having different dimensions. According to the manufacturing method, it is sufficient to form one kind of member, and the rectangular frame 1 can be manufactured with the minimum number of parts.

Further, since the frame member 2 of the frame member 5 is cut into a desired size, it is possible to easily manufacture a trolley for a container having a size in millimeters according to a customer's needs, and further, the frame member can be manufactured. 2 and corner member 3
Since the connecting portion with and is only required at four places, the assembling work can be simplified.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a container truck and a method for manufacturing a truck according to the present invention will be described below with reference to the drawings. In FIG. 1, 1 indicates a rectangular frame body formed in a rectangular frame shape on which a container can be placed. The rectangular frame body 1 is a frame member 2 that constitutes one side of the rectangular frame body 1, Corner member that constitutes one corner of the rectangular frame 1
3 and 4 are integrally formed to form a rectangular frame by connecting four L-shaped frame members 5 in a plan view, and casters 6 are attached below the corner members 3, respectively. A trolley for containers is configured.

The frame member 5 will be described in detail with reference to FIGS.
As shown in FIG. 5, the corner member 3 has a substantially fan-shaped plan view with a central angle of right angle, and the outer edge portion 3a forming the right angle portion is perpendicular to the upper surface 3c of the corner member 3. A side wall 7 is provided, and a side wall joint portion 8 perpendicular to the upper surface 3c of the corner member 3 is provided at the other outer edge portion 3b orthogonal to the outer edge portion 3a.

Further, on the upper surface 3c of the corner member 3, a plate-shaped frame member 2 having an upper surface 2c formed flush with the upper surface 3c is integrally extended in parallel with the outer edge portion 3a of the corner member 3. The outer edge 2a of the frame member 2
The frame side wall 10 is integrally extended from the side wall 7 of the corner member 3. In addition, the lower surface 2b of the frame member 2
Are provided with four elongated protrusions 11 in parallel with the outer edge portion 2a of the frame member 2, and the lower surface 2b side of the frame member 2 is formed in an uneven shape in cross section.

In addition, on the other outer edge 3b side of the upper surface 3c of the corner member 3, four elongated recesses 1 parallel to the outer edge 3b are formed.
2 is provided with a fitting recess 14, and when the tip 2d side of the frame member 2 of another frame member 5 is fitted into the fitting recess 14, the upper surface 2c of the frame member 2 And the upper surface 3c of the corner member 3 are flush with each other. In addition, corner members
The side wall joint portion 8 of 3 is opened at the tip 3d side so that the frame side wall 10 of another frame member 5 can be fitted, and
The inside 8a is formed to be hollow so as to hold 10 in place.

Further, on the upper surface 3c of the corner member 3, there is a connecting hole 1 which fits a mounting hole formed in the pedestal of the caster 6.
6, ... Are provided at four locations at regular intervals, and one of the connecting holes 16 is provided at the center of the fitting recess 14.
Incidentally, in consideration of the case where a small caster 6 is attached, a connecting hole 16 'having a short interval is also provided.

Further, at the lower ends of the two elongated projections 11, 11 on the rear end 2e side of the frame member 2, a receiving portion parallel to the upper surface 3c is provided.
18 is integrally provided, while a support recess 19 is formed between the two elongated recesses 12, 12 on the tip 14a side of the fitting recess 14 of the corner member 3.

In FIGS. 1, 6 and 7, reference numeral 20 denotes a reinforcing member made of a round bar reinforcing bar fitted between the elongated projections 11, 11 of each frame member 2, and one end side 20a thereof. Is supported by the receiving portion 18 of the frame member 2 and is on the other end side 20b.
Is supported by being fitted in the supporting recess 19 of the corner member 3, and constitutes one side of the rectangular frame 1.
Is reinforced from below.

Reference numeral 21 denotes a lid body which is fitted into an opening portion 22 which is inevitably formed when the receiving portion 18 is integrally formed with the frame member 2 and closes the opening portion 21.

In the rectangular frame 1, the end 2d side of the frame member 2 of one frame member 5 is connected to the corner member 3 of the other frame member 5.
Of the frame member 2, the corner member 3 and the pedestal 6a of the caster 6 are connected and fixed via a fixing tool 24 composed of bolts and nuts. They are connected to each other and formed into a rectangular frame shape. Therefore, the four side portions of the rectangular frame 1 are connected to the frame members 5
The frame members 2 of FIG. 4 are respectively configured, and the corner members 3 of each frame member 5 are configured at four corners of the rectangular frame 1.

The container truck having the above structure is shown in FIG.
And as shown in FIG. 7, one frame member 5 and one frame member 2
Of the long protrusions 11, ... of the other frame member 5 of the corner member 3
Of the frame member 2 and the frame side wall 10 of the frame member 2 is connected to the side wall joint portion of the corner member 3.
Since it is inserted into 8 and connected, the connection part is hard to rattle and is stubborn.

In addition, since there are four connecting portions between the frame member 2 and the corner member 3 of the rectangular frame body 1, as compared with the conventional container truck in which both ends of the frame are connected. The connecting part is half. Therefore, not only is the connecting work less time consuming, but the less the connecting part is, the less likely it is to loosen even after long-term use.
Has the advantage of being robust, and is also hygienic due to the small number of connections.

Further, since the corner member 3 is provided with the fitting recess 14, the upper surface 2c of the frame member 2 and the upper surface 3c of the corner member 3 are flush with each other, so that the containers to be placed in multiple stages are It can be transported in a stable state without tilting and is easy to clean.

Further, since the reinforcing member 20 is attached below each frame member 2, the rectangular frame 1 becomes strong, and the reinforcing member 20 has both end sides 20a, 20b. 2 receiving portion 18 and corner member 3 supporting concave portion 19
Since the frame member 2 can be reinforced from below by simply fitting it in, the structure is simple.

If the frame member 5 is made of a material, such as aluminum alloy or reinforced plastic, which can sufficiently withstand the load of containers placed in multiple stages, it is necessary to attach the reinforcing member 20. However, in such a case, the receiving portion 18, the supporting concave portion 19 and the lid body 21 are unnecessary.

Next, a method of manufacturing the container truck according to the present invention will be described. First, as shown in FIG. 8, the frame member 5 having the above structure is integrally formed of, for example, plastic, and four frame members 5 having the same shape are prepared. Then, the frame member 2 of the frame member 5 is cut as necessary to obtain a container truck having a desired size.

For example, a rectangular frame body whose two opposite sides are short
If you want to manufacture a container truck consisting of 1,
From the tip 2d side of the frame member 2 is cut and removed according to the dimension to be manufactured (shown by a chain double-dashed line), and a hole 26 is formed on the tip 2d 'side of the new frame member 2 after cutting, Tip 2
The d'side is fitted into the fitting recess 14 of another frame member 5. Finally, the casters 6 are positioned below the other frame members 5, and the holes 26 on the tip 2d 'side of the frame member 2, the connecting holes 16 of the corner members 3, and the mounting holes 6b of the pedestals 6a of the casters 6 are bolted, If a fixing tool 24 such as a rivet is inserted and fastened and all the frame members 5 are similarly connected, a trolley for a container having a desired size as shown in FIG. 1 is manufactured.

As described above, according to the method of manufacturing a bogie of the present invention, one kind of frame member 5 is formed, and if necessary, the frame member 2 of the frame member 5 is cut to obtain a desired size. Since the rectangular frame 1 can be arbitrarily formed, it is possible to manufacture a truck having a desired size while minimizing the number of parts.

That is, in the conventional container truck,
Although three types of members, a corner member, a vertical frame and a horizontal frame, were required to form the rectangular frame, according to the container truck and the method for manufacturing a truck of the present invention, one kind of member should be prepared. Good. Furthermore, even when manufacturing various types of bogies of different sizes, it is only necessary to appropriately cut the frame member 2 of the frame member 5 to the desired size, so it is suitable for containers with dimensions in millimeters according to customer needs. There is no inconvenience that the dolly can be manufactured and the dimensions can be changed only at intervals of the mounting holes unlike the dolly for a conventional container. In addition, since the tip 2d 'side of the frame member 2 is fitted into the fitting recess 14 of the corner member 3 of the other frame member 5, if one place is fastened with the fixture 24 as described above, it is fixedly connected. Therefore, it is sufficient to make one hole 26 on the side of the tip 2d '.

Further, the connecting portion between the frame member 2 and the corner member 3 need only be at four places, so that the assembling work can be simplified. In particular, when the frame member 2 is connected to the corner member 3 by using the fixing tool 24, the caster 6 is also attached via the fixing tool 24, so that the tightening work of the fixing tool 24 is the least, Therefore, there is an advantage that the assembling work is simpler.

In the manufacturing method of the trolley, when the reinforcing member 20 is attached below each frame member 2, after cutting the frame member 2 to a desired size, one end side 20a of the reinforcing member 20 is cut. Is fitted into the receiving portion 18 of the frame member 2 and the tip 2d side of the frame member 2 is connected to the fitting recess 14 of the corner member 3, the other end side 20b of the reinforcing member 20 is connected to the corner member 3
It suffices to fit it into the support recess 19 of.

In addition, in the container truck and the method of manufacturing the truck according to the above-mentioned embodiment, when the reinforcing member 20 is attached, the reinforcing members are provided below all the frame members 2, ... Which constitute the rectangular frame 1. However, the reinforcing member 20 does not necessarily have to be attached to all the frame members 2, and for example, as shown by the chain double-dashed line in FIG. You may attach only to. Further, in the above embodiment, one reinforcing member 20 is attached below one frame member 2, but one or more reinforcing members 20 may be attached to one frame member 2 if necessary.
May be provided.

[0032]

As described above, according to the container truck of the present invention, since there are four connecting portions of the frame members forming the rectangular frame body, compared with the conventional container truck. The number of connecting portions is small, and the connecting portions are less likely to become loose or distorted due to long-term use, so that a strong rectangular frame body can be formed. Moreover, since there are few gaps in the connecting portion where dirt easily adheres, there is an advantage that it is more hygienic than the conventional container truck and the truck can be easily cleaned.

Further, according to the method of manufacturing a bogie of the present invention, a rectangular frame body having an arbitrary size can be formed by using one kind of frame member, and therefore, a die for forming the frame member is one. Since the number of types is sufficient, it is possible to keep the cost of parts in the trolley low. For example, even if it is necessary to manufacture many types of bogies having different sizes according to customer needs, a large amount of frame members should be manufactured in advance using one type of mold, and the frame members may be appropriately manufactured according to the size. It suffices to cut the frame member and the connecting parts only need to be at four places, so the assembling work is simple. Therefore, regardless of the size of the trolley, it is possible to provide a wide variety of inexpensive container trolleys. Has an extremely large effect.

Further, since the frame member of the frame member is cut into a desired size, there is also an advantage that a container truck having different sizes in millimeter units can be easily manufactured in accordance with the customer's needs.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a container truck according to the present invention.

FIG. 2 is a partially omitted plan view showing a frame member.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a sectional view taken along line CC of FIG. 2;

6 is a cross-sectional view taken along the line DD of FIG.

7 is a sectional view taken along line EE of FIG.

FIG. 8 is an exploded perspective view of a container truck.

FIG. 9 is a plan view showing a conventional container truck.

[Explanation of symbols]

1 ... Rectangular frame, 2 ... Frame member, 2d ... Tip, 3 ... Corner member, 5 ... Frame member, 6 ... Caster

Claims (2)

[Claims] 1. Casters (6) at the four corners of the rectangular frame (1)
And the rectangular frame (1) includes a frame member (2) forming one side of the rectangular frame (1) and one corner of the rectangular frame (1). The frame member (5), which is integrally formed with the composing corner member (3),
Corner member (3) of one frame member (5), other frame member (5)
A trolley for a container, characterized in that the frame members (2) of (1) are connected to each other to form a rectangular frame shape. 2. A frame member (5) having a frame member (2) integrally extending is formed on a corner member (3) to which a caster (6) can be attached, and four frame members (5) are formed. Frame member (2)
To the desired length from the tip (2d) side, and connect the new tip (2d) side of the cut frame member (2) to the corner member (3) of the other frame member (5). Similarly, a method for manufacturing a trolley, which is characterized in that a desired rectangular frame-shaped trolley for a container is manufactured by connecting all the frame members (5) to each other.