JP2003341522A - Bogie and frame member for bogie - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reinforce a connection part of each frame member without providing a side wall jointing part and frame side walls of a frame part at a corner part projecting upwardly, mount a mounted material with an arbitrary size, and easily and quickly connect a plurality of bogies. <P>SOLUTION: According to this bogie, casters 3 are provided at four corners of a bogie body 2 comprising a rectangular frame member 1. The rectangular frame member 1 comprises a plurality of frame members 7 formed by integrating frame parts 5 constituting one side part of the rectangular frame member 1 with corner parts 6 constituting one corner of the rectangular frame member 1. A connection means 12 is provided on the other face 6b opposed to the frame part 5 at the corner part 6, and a connected means 16 detachably connected with the connection part of the other frame member 7 is provided on an outer face 6c of the corner part 6. A fitting part 23 demarcated and formed by an upper wall part 6e, a bottom wall part 6f, and both side peripheral walls 6g, 6g is formed on an inner face 6d of the corner part 6 in order to fit and fix a tip end of the frame part 5 of the other frame member 7. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounted member such as a cardboard box or a box-shaped container made of plastic, metal or the like, which is used in a store such as a distribution center or a supermarket and can store products. The present invention relates to a trolley and a trolley frame member that can be transported by loading a single unit or multiple stages in multiple stages.

[0002]

2. Description of the Related Art Conventionally, there are a wide variety of containers used as a container for various products in a distribution center or a supermarket, and mounted on a trolley to be transported, depending on the type of business or application. . As a dolly for carrying such a container, the dolly described in Japanese Patent Laid-Open No. 9-286335 is known.

As shown in FIG. 10, such a dolly is one in which casters 52 are provided at four corners of a dolly body composed of a rectangular frame 50, respectively.
Is composed of four frame members 55 that are integrally formed with a frame portion 53 that constitutes one side portion thereof and a corner portion 54 that constitutes one corner portion of a rectangular frame body. The frame portions 53 of the other frame members 55 are connected to the portions 54, respectively, to form a rectangular frame shape.

[0004]

In the above-mentioned conventional truck, the fitting recess 56 having an open upper surface is provided in the corner portion 54 of each frame member 55, and the fitting recess 56 is provided with the other fitting recess. The tip portion of the frame portion 53 is fitted and fixed. Moreover, each frame portion 53 is provided on the upper surface of each corner portion 54.
A side wall joint portion 58 into which the frame side wall 57 that is protruded is fitted is formed so as to protrude.

As described above, the frame side wall 5 of the other frame portion 53 is connected to the side wall joint portion 58 of the one corner portion 54.
The reason why 7 is fitted is that it is necessary to secure a predetermined strength in the connecting portion of both frame members 55.

In the conventional cart, since the side wall joint portion 58 of the corner portion 54 and the frame side wall 57 of the frame portion 53 project, there is no problem in mounting a dedicated container or the like having a predetermined size. However, when a container or the like larger than this is placed, the side wall joint portion 58 and the frame side wall 57 become an obstacle, the placed container becomes unstable, or the container cannot be placed in a plurality of stages. There was a flaw.

[0007] Further, the carriage is not always used as a single body, but there are cases where it is desired to connect a plurality of carriages. The conventional trolley can be set to an arbitrary size by cutting the frame portion 53, but since it does not have a means for connecting a plurality of trolleys, it is possible to connect an arbitrary number of trolleys. could not.

The present invention has been made in view of the conventional problems as described above, and it is possible to provide a side wall joint portion and a frame side wall of a frame portion at a corner portion protruding upward,
It is possible to reinforce the connecting portion of each frame member, to mount an object of any size, and to easily and quickly connect a plurality of carriages. And

[0009]

The present invention has been made as a bogie and a bogie frame member in order to solve the above-mentioned problems. The bogie is characterized by the four corners of the bogie main body 2 including the rectangular frame 1. Casters 3 are provided respectively, and the rectangular frame 1 is integrally formed with a frame part 5 forming one side of the rectangular frame 1 and a corner part 6 forming one corner of the rectangular frame 1. In the trolley made up of a plurality of frame members 7 formed as described above, the connecting means 12 is provided on the other surface 6b of the corner portion 6 on the side opposite to the frame portion 5, and the outer surface 6c of the corner portion 6 is provided with another member. A connected means 16 to which the connecting portion of the frame member 7 is detachably connected is provided, and the tip end portion of the frame portion 5 of another frame member 7 is fitted and fixed to the inner surface 6d of the corner portion 6. Therefore, the upper wall portion 6e and the bottom wall portion 6f
Fitting portion 23 partitioned and formed from both side walls 6g and 6g
Is formed.

Then, in the corner portion 6 of the one frame member 7,
Since the entire tip portion of the frame portion 5 of the other frame member 7 is fitted, the frame portion 5 and the corner portion 6 can be firmly connected without rattling.

Moreover, since the connecting means 12 and the connected means 16 are provided at the corner portions 6 of the frame member 7, respectively, the connecting means 12 of one carriage and the connected means 16 of the other carriage are provided. Can be connected easily and quickly, and a plurality of carriages can be connected to any position for use.

Further, casters 3 are provided at four corners of a carriage main body 2 composed of the rectangular frame 1, and the rectangular frame 1 constitutes one side of the rectangular frame 1.
And a corner portion 6 that constitutes one corner portion of the rectangular frame body 1, which is an inner surface 6 of both of the corner portions 6.
The top wall portion 6e, the bottom wall portion 6f, and the both side peripheral walls 6g, 6 are inserted into the a and 6d so that the tip portion of the frame portion 5 is fitted and fixed.
Fitting portions 23 and 23a are formed separately from g, and one outer surface 6b of the corner portion 6 is formed.
Is provided with a connecting means 12, and the other outer surface 6c of the corner portion 6 is provided with a connected means 16 to which the connecting means of another rectangular frame 1 is detachably connected. .

A feature of the frame member for a truck is a frame member for a truck for constructing the rectangular frame 1, and a frame portion 5 constituting one side of the rectangular frame 1 and a rectangular frame. A corner portion 6 forming one corner portion of the body 1 is integrally formed, and a connecting means 12 is provided on the other surface 6b of the corner portion 6 opposite to the frame portion 5, and the outer surface of the corner portion 6 is provided. 6c is provided with connected means 16 to which the connecting means 12 of the other frame member 7 is detachably connected, and the inner surface of the corner portion 6 of each frame member 7 has a frame portion of the other frame member 7. In order to fit and fix the tip end portion of No. 5, there is formed a fitting portion 23 defined by the upper wall portion 6e, the bottom wall portion 6f, and both side peripheral walls 6g, 6g.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a bogie according to the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, reference numeral 1 denotes a dolly on which an object to be placed such as a container can be placed, and the dolly 1 comprises a dolly body 2 and casters 3 attached to a lower surface of the dolly body 2. .

The trolley body 2 is formed in a rectangular shape by connecting four frame members 7 composed of a frame portion 5 and a corner portion 6 which are integrally molded from synthetic resin, for example. In addition, the pair of frame members 7 includes the hood part 5
And the other pair of frame members 7 have short hood parts 5.

The frame portion 5 of each frame member 7 has a band shape in a plan view as shown in FIGS.
A plurality of elongated protrusions (ribs) 9 are provided in parallel on the lower surface 5a of the frame 5 over the entire length of the frame 5, and the frame 5 is formed to have an uneven cross section. The upper surface of the frame portion 5 is formed into a flat surface, and the upper surface is
A pad 10 made of an elastic body having a large friction coefficient is attached so as to come into contact with a placed object to be placed. In addition, the flat surface means a case where the entire surface is a flat surface, and
As shown in (a), including the case where there is some unevenness, the point is that it does not hinder the placed object.

The corner portion 6 has a substantially rectangular shape in a plan view, and its upper surface is flat. still,
The flat surface is the same as the case of the frame portion 5. The frame portion 5 is integrally connected to one surface 6 a of the corner portion 6. The upper surface of the corner portion 6 is slightly higher than the upper surface of the frame portion 5. A pad 28 made of an elastic body having a large friction coefficient is attached to approximately the center of the upper surface of the corner portion 6 so as to come into contact with an object to be placed. The thickness of the pad 28 is smaller than the thickness of the pad 10 of the frame portion 5, and the upper surfaces of both pads 28, 10 are substantially flush with each other (FIG. 4).
(See (a)).

A connecting means 12 is provided on the other surface 6b of the corner 6 (parallel to the one surface 6a). The connecting means 12 includes a neck portion 13 protruding from the other surface 6b and locking portions 14 and 14 protruding from the neck portion 13 to both sides of the neck portion 13.
It has a letter shape.

A connecting means 16 is provided on the outer surface 6c of the corner portion 6 (a surface perpendicular to the one surface 6a and the other surface 6b). The connected means 16 is composed of a pair of locking protrusions 17, 17 facing each other. A locked portion 18 is provided on the tip side of each locking projection 17 so as to be bent inward so as to face the outer surface 6c at a predetermined interval. The distance W1 between the bases of the connected means 16 is substantially equal to the length L1 of both ends of the connecting means 12. Also,
The distance W2 between the locked portions 18 is substantially equal to the width length L2 of the neck portion.

Here, the outer surface 6c and both locking projections 17,
The shape of the fitting recess 22 formed by 17 is substantially the same as the shape of the connecting means 12. Therefore, the connecting means 12 of one frame member 7 is connected to the connected means 1 of the other frame member 7.
6 is detachably fitted.

On the inner surface 6d of the corner portion 6 (the surface parallel to the outer surface 6c), there is formed a fitting portion 23 into which the tip of the frame portion 5 is fitted. Specifically, as shown in FIG. 4 (a), the fitting portion 23 may be defined by an upper wall portion 6e, a bottom wall portion 6f, and both amount side peripheral walls 6g, 6g. , A fitting opening 25 communicating with the fitting portion 23
Are formed. The upper wall portion 6e, the bottom wall portion 6f, and both side peripheral walls 6g, 6g may cover the front end portion of the frame portion 5 or may be partially covered by forming an opening. Is also good. The bottom wall portion 6f is formed in an uneven shape corresponding to the shape of the elongated projection portion 9 of the frame portion 5. The thickness of the upper wall portion 6e is substantially equal to the step between the corner portion 6 and the frame portion 5.

Further, the fitting portion 2 is provided in the corner portion 6.
A positioning wall portion 26 that sets the depth of 3 is formed. Therefore, by bringing the tip end of the frame portion 5 fitted into the fitting portion 23 into contact with the positioning wall portion 26,
The amount of fitting of the frame portion 5 is set appropriately. In addition, between the long protrusions 9 of each frame portion 5 and the corner portion 6,
A reinforcing member (not shown) made of round bar reinforcement is fitted,
The reinforcing member reinforces the frame portion 5 forming one side of the rectangular frame 1 from below.

The tip end side of the frame portion 5 of the one frame member 7 is fitted into the fitting portion 23 of the corner portion 6 of the other frame member 7, and the frame portion 5 is formed in the corner portion 6. It is fixed to the corner portion 6 by a fixing means 30 such as a rivet or a bolt which is inserted through the hole 31. Therefore,
The four side portions of the rectangular frame are connected to the frame portion 5 of each frame member 7.
And the corner portions 6 of each frame member configure the four corner portions of the rectangular frame body.

In the bogie having the above structure, the entire tip of the frame portion 5 of each frame member 7 is replaced by the corner portion 6 of another frame member.
Since the upper wall portion 6e, the bottom wall portion 6f, and the both side peripheral walls 6g, 6g are completely fitted and fixed in the fitting portion 23 defined by the side wall portions 6g, 6g, the connecting portion is hard to rattle and is stubborn. Further, not only the labor for connecting the work pieces is small, but also the smaller the connecting parts are, the less likely it is to loosen or the like even after long-term use, and the rectangular frame body 1 has an advantage of being sturdy.

The upper surface of the frame member of the corner portion 5
Since 2c and the upper surface of the corner portion are flat surfaces and there is no portion projecting upward from the upper surface, containers of arbitrary sizes placed in multiple stages can be transported in a stable state without tilting.

Next, a method of manufacturing the container truck according to the present invention will be described.

First, as shown in FIG. 2, a frame member 7 having the above-described structure, in which the frame portion 5 and the corner portion 6 have the same shape, is integrally formed of, for example, plastic.
Prepare a set of pieces.

Then, for example, the frame portion 5 of the frame member 7 is cut as necessary so as to obtain a truck having a desired size.
For example, when it is desired to manufacture a dolly for a container having a rectangular frame body whose two opposite sides are short, the frame member 7 is cut and removed from the front end side of the frame portion 5 to a desired size. In this embodiment, a pair of long frame members 7 and a short frame member 7 are manufactured.

Further, the tip of the frame portion 5 of the long frame member 7 is fitted into the fitting portion 23 of the corner portion 6 of the short frame member 7, and the connecting portion is fixed by the fixing means 30. Further, the frame portion 5 of the short frame member 7 is replaced with the fitting portion 2 of the long frame member 7.
3 and is fixed by the fixing means 30 as described above. still,
After cutting, a hole is formed in the front end side of the new frame portion 5 and the fixing means is inserted.

Finally, the casters 3 are attached below the corners 6 of each frame member 7 to manufacture the dolly 1 for containers having desired dimensions as shown in FIG. The casters 3 may be attached to each frame member 7 before connecting the frame members 7.

As described above, according to the method for manufacturing a bogie of the present invention, if one kind of frame member 7 is formed and the frame portion 5 of the frame member 7 is cut as needed, a desired size can be obtained. Since the rectangular frame body can be arbitrarily formed, it is possible to manufacture a truck having a desired size while minimizing the number of parts.

Further, even when many types of bogies having different sizes are manufactured, it is only necessary to cut the frame portion 5 of the frame member 7 to a desired size. It is possible to manufacture carts for containers.

In addition, the entire tip portion of the frame portion 5 is
The upper wall portion 6e and the bottom wall portion 6f of the corner portion 6 of the other frame member 7
And a fitting portion 2 formed by partitioning from both sides of the peripheral wall 6g, 6g
Since they are respectively fitted to the parts 3, the connection is strong without rattling. Further, the connecting portion between the frame portion 5 and the corner portion 6 need only be at four places, so that the assembling work can be simplified.

In the above-mentioned embodiment, the case where four frame members are used has been exemplified, but as shown in FIG. 7, eight frame members (one in which the two carts are connected) may be used. . In such a case, by connecting the connecting means 12 of one of the trucks 1 to the connected means 16 of the other truck 1, it can be carried out easily and quickly. Furthermore, it is also possible to appropriately connect three or more carriages in the longitudinal direction or the lateral direction.

Further, since a reinforcing member is attached below each frame member 5, the rectangular frame body becomes tough, but the frame member 7 is made of aluminum alloy, reinforced plastic or the like. When it is made of a material that can withstand the loads of the containers placed in multiple stages, it is not always necessary to attach a reinforcing member.

8 and 9 show still another embodiment of the present invention. That is, in the present embodiment, the corner portion 6 and the frame portion 5 are made of different members. Specifically, both inner surfaces 6a, 6d of each corner portion 6
In order to fit and fix the tip end portion of the frame portion 5, there are formed fitting portions 23 and 23a defined by the upper wall portion 6e, the bottom wall portion 6f, and both side peripheral walls 6g and 6g. . The inner surfaces 6a and 6d correspond to the one surface and the inner surface described in the above embodiment. Therefore, the tip ends of the frame portion 5 are fitted into the fitting portions 23 and 23a of the respective corner portions 6.

The connecting means 12 is provided on one outer surface (corresponding to the other surface of the above embodiment) 6b of each corner portion 6.
Is provided. The connected means 16 is provided on the other outer surface 6c. In this embodiment,
The corner portions 6 and the frame portion 5 are different members from each other in the above-described embodiment, and other members and configurations are the same, and thus the description thereof will be omitted.

[0038]

As described above, according to the bogie of the present invention, the connecting means is provided on the other surface of the corner portion of each frame member opposite to the frame portion, and the outer surface of the corner portion is provided with Since the connected means to which the connecting portion of the other frame member is detachably connected is provided, it is possible to easily and quickly connect a plurality of carriages.

Moreover, the inner wall of the corner of each frame member is divided into an upper wall portion, a bottom wall portion, and both side peripheral walls so as to fit and fix the tips of the frame portions of the other frame members. Since the fitting portion is formed, the connection between the frame portion and the corner portion is ensured, and it is difficult for the connecting portion to loosen or distort due to long-term use, and a strong rectangular frame body can be formed. it can. Therefore, unlike the conventional case, it is not necessary to provide the side wall joint portion protruding upward at the corner portion and the frame side wall of the frame portion, and even if the mounted object such as a container having an arbitrary size is mounted on the trolley, the side wall joint portion is not formed. There is an advantage that the object to be placed can be safely carried without the parts and the side wall of the frame becoming an obstacle and making the placed object unstable.

[Brief description of drawings]

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

FIG. 2 is an exploded plan view of the same.

FIG. 3 is a plan view of a bogie frame member according to the present invention.

FIG. 4A is a front view of a frame member for a truck, and FIG.
It is the same side view.

FIG. 5 shows a connecting portion between a frame portion and a corner portion,
It is a partial cross-section top view.

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

FIG. 7 is an overall perspective view showing another embodiment of the present invention.

FIG. 8 is a partial cross-sectional plan view of a connecting portion between a frame portion and a corner portion showing still another embodiment of the present invention.

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

FIG. 10 is a plan view showing a conventional container truck.

[Explanation of symbols]

1 ... Rectangular frame body, 2 ... Bogie body, 3 ... Casters, 5 ... Frame part, 6 ... Corner part, 6a ... Inner surface (one surface), 6b
... other surface, 6c ... outer surface, 6d ... inner surface, 6e ... upper wall portion, 6f
... bottom wall portion, 6g ... both side walls, 7 ... frame member, 12 ... connecting means, 16 ... connected means

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B65D 21/024 B65D 21/02 K

Claims (4)

[Claims] 1. A trolley body (2) comprising a rectangular frame (1)
Casters (3) are respectively provided at the four corners of the rectangular frame body (1), and the rectangular frame body (1) has a frame portion (5) forming one side of the rectangular frame body (1) and one corner of the rectangular frame body (1). A trolley comprising a plurality of frame members (7) integrally formed with a corner portion (6) forming a part, the other surface (a) of the corner portion (6) opposite to the frame portion (5) ( 6
The connecting means (12) is provided in b), and the connected means (16) in which the connecting means of the other frame member (7) is detachably connected to the outer surface (6c) of the corner portion (6). ) Is provided, and an upper wall portion (6e) is formed on the inner surface (6d) of the corner portion (6) in order to insert and fix the tip portion of the frame portion (5) of the other frame member (7). Fitting part (2) partitioned and formed from the bottom wall part (6f) and both side peripheral walls (6g) and (6g)
A dolly characterized in that 3) is formed. 2. The tip portion of the frame portion (5) is fixed to the fitting portion (23) by a fixing means.
The dolly described in. 3. A trolley body (2) consisting of a rectangular frame (1)
Casters (3) are respectively provided at the four corners of the rectangular frame body (1), and the rectangular frame body (1) has a frame portion (5) forming one side of the rectangular frame body (1) and one corner of the rectangular frame body (1). A dolly comprising a corner portion (6) forming a part, wherein both inner surfaces (6a) and (6d) of the corner portion (6) are
In order to fit and fix the tip of the frame part (5),
An upper wall portion (6e), a bottom wall portion (6f) and both side peripheral walls (6g),
Fitting portions (23), (23) that are partitioned from (6g)
a) are formed respectively, moreover, the connecting means (12) is provided on one outer surface (6b) of the corner portion (6), and the other outer surface (6c) of the corner portion (6) is provided with the other. 2. A trolley provided with a connected means (16) to which the connecting means of the rectangular frame body (1) is detachably connected. 4. A bogie frame member for constituting the rectangular frame body (1), comprising a frame portion (5) constituting one side portion of the rectangular frame body (1), and a rectangular frame body (1). ) Is integrally formed with a corner portion (6) constituting one corner portion, and a connecting means (12) is provided on the other surface (6b) of the corner portion (6) opposite to the frame portion (5). Provided on the outer surface (6c) of the corner portion (6) is a connected means (16) to which the connecting means (12) of another frame member (7) is detachably connected, and each frame is provided. The inner wall of the corner portion (6) of the member (7) is fitted with the top end portion of the frame portion (5) of the other frame member (7) so as to be fixed.
e), a bottom wall portion (6f), and both side walls (6g) and (6g), and a fitting portion (23) defined by a partition is formed.