JP6157199B2 - Carriage cart with coupling mechanism - Google Patents

Description

  The present invention relates to a transport cart used for transporting articles, and more particularly to a transport cart that allows a plurality of transport carts to be connected in a planar direction in which mounting surfaces coincide.

2. Description of the Related Art Conventionally, a transport cart that can connect a plurality of transport carts on which articles can be placed and transported in a plane direction in which the placement surfaces coincide with each other is disclosed in Patent Document 1.

The invention described in Patent Document 1 includes an engagement position where the first connecting means protrudes outward from the side wall on the lower surface portion facing one side on the long side of the product placing plate of the cart body, and the outside of the side wall. An engagement portion that is provided so as to be movable between storage positions that do not protrude from the surface and that engages with the first connection means at the engagement position of the mating truck body to be connected is provided on the side wall opposite to the first connection means. It is formed. The second connecting means is movably provided between the engagement position where the second connecting means protrudes outward from the side wall and the storage position where it does not protrude from the outer surface of the side wall, on the lower surface portion facing one side on the short side of the product placing plate, On the side wall opposite to the second connecting means, an engaging portion is formed to engage with the second connecting means at the engaging position of the mating truck body to be connected.

In addition to Patent Document 1, as a transport cart that can be connected in the plane direction in which the mounting surfaces of the transport cart are matched, Patent Document 2 showing a cart for containers, and a transport vehicle used in a supermarket or the like are shown. Patent document 3 etc. are known.

JP 2000-289624 A JP 2000-95245 A JP 7-257384 A

In the conventional transport carts described in Patent Documents 1 to 3, when the transport cart passes through a step or when it passes through an uneven passage, a vertical upward force is applied to the transport cart. There was a problem that the connecting part was disconnected. In such a case, the placed article falls from the transport cart, so that the article may be damaged or damaged.

The present invention solves the above-described conventional problems, and an object of the present invention is to provide a transport cart that can prevent the connection from being easily disconnected even if a vertical upward force is applied to the transport cart. It is to provide.

  The transport cart according to the present invention includes a loading platform on which an article is placed, a connection insertion portion provided on at least one side surface of the loading platform, and a connection engagement provided on at least one side surface of the loading platform and receiving the connection insertion portion. The connecting insertion portion and the connecting engagement portion are formed to be freely detachable in a horizontal direction substantially parallel to the side surface on which the connecting engagement portion is provided. It is characterized by being.

The transport cart according to a second aspect of the present invention is characterized in that the connection insertion portion and the connection engagement portion are provided on the same side surface of the cargo bed.

The transport cart according to a third aspect of the present invention is characterized in that the connection insertion portion and the connection engagement portion are provided on at least two sides of the cargo bed.

The transport cart according to a fourth aspect of the present invention is characterized in that the connection insertion portion and the connection engagement portion are respectively provided on all sides of the loading platform.

According to a fifth aspect of the present invention, the connection engagement portion includes an upper connection engagement portion that receives the upper surface of the connection insertion portion, and a lower connection engagement portion that receives the lower surface of the connection insertion portion. The tip of the upper connection engagement portion and the tip of the lower connection engagement portion are opposed to each other.

The transport cart according to a sixth aspect of the present invention is characterized in that the upper connection engagement portion and the lower connection engagement portion are each formed in a comb shape.

According to a seventh aspect of the present invention, there is provided the transport cart according to the present invention, wherein the connection engagement portion includes a stop portion for stopping the connection insertion portion.

According to an eighth aspect of the present invention, the transporting carriage according to the present invention is characterized in that the connecting insertion portion is formed in a tapered shape whose diameter is reduced toward the insertion direction.

  According to the transport carriage of the present invention, the connecting insertion portion and the connecting engagement portion are formed so as to be freely insertable / removable in a horizontal direction substantially parallel to the side surface on which the connection engaging portion is provided. When the upward force is applied to the vertical direction, the connecting portion can be prevented from coming off in the vertical direction. Therefore, even if it is a channel | path with a level | step difference or an unevenness | corrugation, smooth driving | running | working can be implement | achieved, maintaining the connected state.

It is a perspective view which shows the conveyance trolley | bogie in one Example of this invention. It is a top view which shows the conveyance trolley | bogie in one Example of this invention. It is an expansion perspective view which shows the connection insertion part in FIG. It is an enlarged plan view which shows the connection insertion part in FIG. It is an enlarged front view which shows the connection insertion part in FIG. It is an enlarged side view which shows the connection insertion part in FIG. It is an enlarged bottom view which shows the connection insertion part in FIG. It is an expansion perspective view which shows the connection engaging part in FIG. It is an enlarged plan view which shows the connection engaging part in FIG. It is AA sectional drawing which shows the connection engaging part in FIG. It is an enlarged side view which shows the connection engaging part in FIG. It is an enlarged bottom view which shows the connection engaging part in FIG. It is a perspective view which shows the connection state of the conveyance trolley | bogie in one Example of this invention. It is a top view which shows the connection state of the conveyance trolley | bogie in one Example of this invention.

  FIG. 1 shows a perspective view of a transport cart in one embodiment of the present invention. FIG. 2 shows a plan view of the transport cart in one embodiment of the present invention.

1-2 has a loading platform 20 on which an article can be placed, and four wheels 50 are provided on the lower surface of the loading platform 20. The loading platform 20 is made of synthetic resin, and is formed in a substantially rectangular shape having a long planar shape on one side.

In addition, a connection insertion portion 30 and a connection engagement portion 40 for connecting a plurality of carts are provided on the side surface 21 of the loading platform 20. In the embodiment of FIGS. 1 and 2, the connecting insertion portion 30 and the connecting engaging portion 40 are provided on all the side surfaces 21 of the loading platform 20. The side surface 21 may be used. Further, in FIGS. 1 and 2, the connection insertion portion 30 and the connection engagement portion 40 are provided on the same side surface 21, but they may not necessarily be the same side surface 21. For example, a connection insertion portion 30 may be provided on a side surface 21 and a connection engagement portion 40 may be provided on a diagonal side surface 21 thereof.

  FIG. 3 shows an enlarged perspective view of the connecting insertion portion of the transport carriage in one embodiment of the present invention. FIG. 4 shows an enlarged plan view of the connecting insertion portion of the transport carriage in one embodiment of the present invention. FIG. 5: shows the enlarged front view of the connection insertion part of the conveyance trolley | bogie in one Example of this invention. FIG. 6 shows an enlarged side view of the connecting insertion portion of the transport carriage in one embodiment of the present invention. FIG. 7 shows an enlarged bottom view of the connecting insertion portion of the transport carriage in one embodiment of the present invention.

  3-7 has a mushroom-shaped cross section, and is formed in a tapered shape in which the diameter of the umbrella portion 31 is reduced toward the insertion direction. Since the connection insertion part 30 is formed in a taper shape, when the connection insertion part 30 is inserted into the connection engagement part 40, they are not easily fitted and detached.

  As shown in FIG. 7, a so-called “thickening” or “meat stealing” method is applied to the lower surface of the connection insertion portion 30 of the present embodiment. The resin material is reduced to such an extent that the strength of the connection insertion portion 30 is not impaired, thereby reducing the manufacturing cost.

  FIG. 8 shows an enlarged perspective view of the coupling engagement portion of the transport carriage in one embodiment of the present invention. FIG. 9 shows an enlarged plan view of the coupling engagement portion of the transport carriage in one embodiment of the present invention. FIG. 10: shows AA sectional drawing of the connection engaging part of the conveyance trolley | bogie in one Example of this invention. FIG. 11 shows an enlarged side view of the coupling engagement portion of the transport carriage in one embodiment of the present invention. FIG. 12 shows an enlarged bottom view of the coupling engagement portion of the transport carriage in one embodiment of the present invention.

8 to 12 includes an upper connection engagement portion 41 that receives the upper surface of the connection insertion portion 30, a lower connection engagement portion 42 that receives the lower surface of the connection insertion portion 30, and the connection insertion portion 30. It consists of a stop 43 for stopping.

  The upper connection engagement portion 41 and the lower connection engagement portion 42 are each formed in a comb shape, and the tooth portion 44 of the upper connection engagement portion 41 and the tooth portion 45 of the lower connection engagement portion 42 are viewed from above. They are located alternately (FIGS. 8 and 9). By being formed in a comb shape, even if a part of the tooth part 44 or the tooth part 45 is lost, it is possible to ensure the function of receiving the connection insertion part 30 by the other tooth part 44 or the tooth part 45. it can. In addition, since there is a comb-like cut portion (a gap between adjacent tooth portions), an effect of “thinning” is born and the resin material can be reduced, so that the manufacturing cost can be reduced.

  Furthermore, the front end portion 46 of the upper connection engagement portion 41 and the front end portion 47 of the lower connection engagement portion 42 face each other. For this reason, a space for receiving the mushroom-shaped handle portion 32 of the connection insertion portion 30 is created (FIG. 10), and the connection insertion portion 30 can be formed in a mushroom cross section. In addition, when the front-end | tip part 46 and the front-end | tip part 47 are not mutually opposing, or when the connection engaging part 40 is cylindrical shape etc., it can connect by forming the connection insertion part 30 in a substantially L shape etc. it can. For example, the L-shaped short side portion is arranged on the side surface 21 and the L-shaped long side portion is formed in parallel with the insertion direction. The part 40 can be engaged (not shown).

Next, in the embodiment configured as described above, a method of connecting a plurality of transport carts 10 in a planar shape will be described.

  FIG. 13: shows the perspective view of the connection state of the conveyance trolley | bogie in one Example of this invention. FIG. 14 is a plan view showing a connected state of the transport carriage in one embodiment of the present invention.

In the present embodiment, in order to connect one transport cart 10 and another transport cart 10, first, the corresponding side surfaces 21 need to be arranged close to each other. The corresponding side surface 21 indicates, for example, the side surface 21 (a) of another transport cart 10 when the side surface 21 (a) of one transport cart 10 is connected (FIG. 12). After the arrangement as described above, the connection insertion part 30 of one transport carriage 10 is inserted into the connection engagement part 40 of another transport carriage 10 in the horizontal direction, and at the same time, the connection insertion part 30 of the other transport carriage 10 is inserted. It inserts in the connection engaging part 40 of the one conveyance trolley 10 in a horizontal direction. Thereby, the connection insertion part 30 of the one transport carriage 10 and the connection engagement part 40 of the other transport carriage 10, and the connection insertion part 30 of the other transport carriage 10 and the connection engagement part 40 of the one transport carriage 10. Are simultaneously engaged and connected.

  The transport cart 10 connected as described above is connected to the connection insertion portion 30 even when a vertically upward force is applied to the transport cart 10 when passing through a step or when passing through an uneven passage. Since the vertical movement of the engaging portion 40 is restricted, it is possible to prevent the connection from being disconnected due to the impact. Even when a force in the horizontal direction is applied, if the direction of the force is the same direction as the insertion direction of the connection insertion portion 30, the connection insertion portion 30 is stopped by the stop portion 43, so that the connection is released. Can be prevented. Further, even when a force is applied in a direction opposite to the insertion direction of the connection insertion portion 30 when passing through a normal step or uneven passage, the connection insertion portion 30 formed in a tapered shape and the connection engagement The fitting force of the portion 40 can prevent the connection from being easily removed.

The transport cart 10 of the present invention is not limited to the above-described form, and can be variously modified within the scope of the present invention depending on the type of article to be placed, the use of the cart, the usage environment, and the like. For example, the loading platform 20 may be polygonal rather than substantially rectangular. Further, the loading platform 20 may not be made of synthetic resin but may be made of wood or metal. Furthermore, the connection insertion part 30 and the connection engagement part 40 may not be the same kind of material as the loading platform 20, but may be a different kind of material.

DESCRIPTION OF SYMBOLS 10 Carriage trolley 20 Loading platform 21 Side surface 30 Connection insertion part 31 Umbrella part 32 Handle part 40 Connection engagement part 41 Upper connection engagement part 42 Lower connection engagement part 43 Stopping part 44 Tooth part (upper connection engagement part)
45 Teeth (lower coupling engagement part)
46 Tip (upper coupling engagement part)
47 Tip (lower coupling engagement part)
50 wheels

Claims (6)

A loading platform on which goods are placed;
A connecting insert provided on at least one of the sides of the loading platform;
A coupling engagement portion provided on at least one of the side surfaces of the loading platform and receiving the coupling insertion portion;
A transport cart provided with
The connection insertion portion and the connection engagement portion are formed so as to be freely insertable / removable in a horizontal direction substantially parallel to the side surface provided with the connection engagement portion ,
The connecting engagement portion is
An upper coupling engagement portion for receiving an upper surface of the coupling insertion portion;
A lower connection engaging part for receiving a lower surface of the connection insertion part;
Consists of
The distal end portion of the upper coupling engagement portion and the distal end portion of the lower coupling engagement portion are opposed to each other,
Each of the upper connection engagement portion and the lower connection engagement portion is a transport cart formed in a comb shape . The connection insertion portion and the connection engagement portion are
The transport cart according to claim 1, wherein the transport cart is provided on the same side surface of the loading platform. The connection insertion portion and the connection engagement portion are
The transport cart according to claim 1 or 2, wherein each of the transport carts is provided on at least two sides of the cargo bed. The connection insertion portion and the connection engagement portion are
3. The transport cart according to claim 1, wherein the transport cart is provided on all sides of the side surface of the cargo bed. The connecting engagement portion is
The carriage according to any one of claims 1 to 4 , further comprising a stop portion for stopping the connection insertion portion. The connecting insertion part is
The transport cart according to any one of claims 1 to 5 , wherein the transport cart is formed in a taper shape that is reduced in diameter in the insertion direction.

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