JP4606232B2 - Transport cart with folding and nesting functions - Google Patents

Description

  In addition to being able to load and transport container cases (article storage boxes) in multiple rows in the vertical direction or in multiple rows in the horizontal direction, the articles stored in the container cases are displayed in an easy-to-read manner from the front side. It has a folding and nesting function that can be folded in front and tilted so that it can be easily taken out, can be folded compactly when not in use, and can be stored for nesting by reducing the occupied space. It belongs to the technical field of transport carts.

  Conventionally, conveyance carts having folding and nesting functions are known, for example, in Patent Documents 1 to 4 described below, and various implementations have been made.

JP-A-10-236311 JP 9-52574 A Japanese Patent Laid-Open No. 9-272442 JP 2001-138918 A

  It is recognized that the transport carts disclosed in the above Patent Documents 1 to 4 have folding and nesting functions. However, since the nesting function is emphasized, the base frame of the carriage is common in that it is configured in a trapezoidal shape that is tapered in plan view. Therefore, the structure of the base frame of the carriage is complicated and the assembly is troublesome, and the folding mechanism that slides the base frame configured in a tapered trapezoidal shape in plan view is also configured in a complicated manner. For this reason, there are disadvantages that the production is cumbersome and expensive.

  Moreover, the carrier carts disclosed in the above-mentioned Patent Documents 1 to 4 are configured so that the loading platform on which the articles are loaded is substantially horizontal, so that the articles stored in the container case or the like can be easily displayed or taken out from the front side. In addition, it is not configured to be loaded in a downwardly inclined state. Rather, when the container case or the like is configured to be loaded in a front-falling inclined state, it is recognized that it cannot be folded or nested.

  The object of the present invention is not only to have a folding function and a nesting function, but also to make the base frame of the carriage simple in configuration by arranging the base frame in parallel in plan view and sliding the base frame. Provided is a transport cart that has a simple folding mechanism, and a loaded container case or the like is configured to load a stored item in a front-down slanted state so that the stored item can be easily displayed from the front side or the stored item can be easily taken out. That is.

As a means for solving the above-described problems of the prior art, a transport cart having a folding and nesting function according to the invention described in claim 1 is provided.
The pair of base frames 1 and 1 are arranged in parallel at regular intervals in a plan view, and downward casters 2 are attached to both front and rear positions of the base frame 1.
A fixed column 4 is vertically provided near the rear end of the base frame 1, and the pair of fixed columns 4, 4 are connected by a plurality of parallel horizontal connecting members 5.
A movable column 8 having a lower end connected to the base frame 1 so as to be slidable to a position near the front end is installed with an upper end rotatably connected to the upper end of the fixed column 4, and the pair of movable columns 8. , 8 are connected by a plurality of horizontal connecting members 11.
Corresponding height positions of the horizontal connecting member 5 of the fixed column 4 and the horizontal connecting member 11 of the movable column 8 are connected by an article support frame 12 having a substantially rectangular shape in plan view. The article support frame 12 and the lateral connecting material 11 of the movable support column 8 are rotatably connected, and the lateral connecting material 5 of the fixed support column 4 is slidably connected.
When the lower end of the movable column 8 is slid on the base frame 1 to a position near the front end, the article support frame 12 exhibits a certain downward inclination angle, and the lower end of the movable column 8 is fixed on the base frame 1. When the column 4 is slid to the position near the lower end of the column 4, the fixed column 4 and the movable column 8 are folded side by side, and the two carts in the folded state are in the same direction and the base frames 1 and 1 are adjacent to each other horizontally. The fixed struts 4 and the movable struts 8 can be arranged side by side so that they can be nested.

The invention described in claim 2 is a transport cart having a folding and nesting function according to claim 1,
The lateral connecting member 5 in the vicinity of the base frame 1 that connects the pair of fixed columns 4 and 4 is connected at a position above the base frame 1 and is configured not to interfere with the base frame 1 during nesting. Features.

The invention described in claim 3 is a transport cart having a folding and nesting function according to claim 1 or 2,
Each of the base frame 1, the fixed support 4 and its lateral connecting material 5, and the movable support 8 and its horizontal connecting material 11, and the article support frame 12 are each assembled by a resin adhesive-coated steel pipe and a joint connecting the same. It is characterized by.

The invention described in claim 4 is a transport cart having a folding and nesting function according to any one of claims 1 to 3,
The base frame 1 has a composite configuration in which a plurality of resin adhesive-coated steel pipes are vertically stacked and integrally connected, and the lower end portion of the movable support column 8 is configured to slide on the uppermost resin adhesive-coated steel tube 1a. It is characterized by being.

The transport cart having the folding and nesting functions according to the present invention has a function of moving the loaded article by the caster 2 of the base frame 1, but the loaded container case 15 and the like are configured to be loaded in a downwardly inclined state. The articles stored in the container case 15 and the like are displayed so as to be easily viewed from the front side or supported so as to be easily taken out. Therefore, for example, it can be suitably used as a substitute for an article supply shelf or a display shelf.
Further, the pair of base frames 1 and 1 are arranged in parallel in plan view, and the assembly of the base frame 1 itself is simplified. Since the folding mechanism that slides on the base frame 1 is also simply constructed, the transport cart can be easily and inexpensively manufactured.
In addition, the folding function and the nesting function can be effectively utilized to fold into a compact configuration when not in use, and further, nesting can be performed for storage with a small occupied area.

The pair of base frames are arranged in parallel at regular intervals in plan view, and downward casters 2 are attached to both front and rear positions of the base frame 1.
A fixed support column 4 is vertically provided at a position near the rear end of the base frame 1, and the pair of fixed support columns 4 and 4 are connected by a plurality of parallel horizontal connecting members 5 to connect the pair of base frames 1 and 1.
The movable support column 8 having a lower end connected to the base frame 1 so as to be slidable to a position near the front end is installed with its upper end rotatably connected to the upper end of the fixed support 4, and the pair of movable support columns. 8 and 8 are connected by a plurality of lateral connecting members 11 to connect the pair of base frames 1 and 1 again.
Corresponding height positions of the horizontal connecting member 5 of the fixed column 4 and the horizontal connecting member 11 of the movable column 8 are connected by an article support frame 12 having a substantially rectangular shape in plan view. The article support frame 12 and the lateral connecting material 11 of the movable support column 8 are rotatably connected, and the horizontal connecting material 5 of the fixed support column 4 is slidably connected.
In a use state in which the lower end of the movable column 8 is slid on the base frame 1 to a position near the front end, the article support frame 12 is configured to exhibit a certain downward inclination angle forward, and the lower end of the movable column 8 is the base frame. When the top 1 is slid to a position near the lower end of the fixed support 4, the fixed support 4 and the movable support 8 are folded side by side. The two trolleys in the folded state can have the same orientation, and the base frames 1 and 1 can be adjacent to each other so that the fixed struts 4 and the movable struts 8 can be aligned and nested.

Hereinafter, the present invention will be described based on illustrated embodiments.
The carrier cart having folding and nesting functions according to the present invention has a pair of two base frames 1 and 1 arranged in parallel with a certain interval when viewed in plan as shown in FIGS. A downward caster 2 is attached to the positions of the front and rear ends of the base frames 1 and 1.
In the case of this embodiment, the base frame 1 uses two resin-bonded coated steel pipes having an outer diameter of about 28 mm or 32 mm, and is connected to two joints 3 arranged at both ends, and two base frames are overlapped vertically. Assembled into a composite structure. The caster 2 has a support shaft supported by a vertical socket portion in the double joint 3.

  A fixed column 4 is vertically provided at a position near the rear end of each of the base frames 1 and 1. That is, the T-type joint 6 is fixed vertically and installed on the upper resin adhesive-coated steel pipe 1a constituting the base frame 1, and the lower end of the fixed column 4 is fixed to the upward socket portion of the T-type joint 6. (Fig. 3). As described above, the pair of fixed support columns 4 and 4 standing on the base frame 1 and facing each other are connected by the horizontal connecting members 5 arranged in parallel in a plurality of stages at intervals in the vertical direction, and are rigid in a ladder shape. The pair of base frames 1 and 1 are also connected in a U shape in plan view. Note that the lowest horizontal connecting member 5A closest to the base frame 1 is connected at a position above the base frame 1, and does not cause interference with the base frame of other carts during nesting. The resin adhesive-coated steel pipes are also used for the fixed struts 4 and the horizontal connecting members 5, and are connected and assembled using a so-called T-shaped joint 6.

A slide joint 7 that is slidable on the base frame 1 to a position near the front end is installed on an upper resin adhesive-coated steel pipe 1a that constitutes the base frame 1, and the lower end portion of the movable column 8 is connected to the slide joint 7 by a pin 7A. It is connected so that it can rotate. One pair of hinge joints 9A is attached to the upper end portion of the movable support column 8, and the other hinge joint 9B installed on the upper end portion of the fixed support column 4 is connected to the pin 9C so as to be rotatable. Has been. Reference numeral 10 denotes a protective cap attached to the upper end portion of the movable column 8.
The pair of movable struts 8 and 8 which stand on the pair of base frames 1 and 1 as described above and are opposed to each other are also connected horizontally in the illustrated example with two intervals in the vertical direction. It is connected with the materials 11 and 11 to form a rigid frame structure like a ladder, and is configured such that a pair of base frames 1 and 1 are connected. The above-mentioned resin adhesive-coated steel pipes are also used for these movable struts 8 and lateral connecting members 11, and are connected and assembled using a so-called T-shaped joint 6.

Next, the article support frame 12 having a substantially rectangular shape in a plan view is connected between the horizontal connecting members 5 of the fixed columns 4 and the horizontal connecting members 11 of the movable columns 8 corresponding to each other at corresponding height positions. Has been.
In the case of the illustrated embodiment, the above-mentioned resin adhesive-coated steel pipe is also used for the article support frame 12 and is assembled into a rectangular frame structure using a so-called L-shaped joint.
One end (front end) of the article support frame 12 is connected to a state in which the outer periphery of the horizontal connecting member 11 is rotated by the horizontal connecting member 11 and the rotary joint 13 of the movable support column 8. Further, the horizontal connecting member 5 of the fixed support column 4 is slidably connected by a sliding joint 14 that slides the vertical frame of the article support frame 12.

Therefore, as shown in FIG. 3 and FIG. 4, in a normal use state in which the slide joint 7 at the lower end of the movable column 8 is slid forward to a position where it abuts against the double joint 3 at the front end of the base frame 1. In the case of FIG. 4, container cases 15 storing various articles (for example, automobile assembly parts) are stacked on the article support frame 12 one by one in the upper and lower stages. In this case, the article support frame 12 shown in FIG. 3 and FIG. 4 is an article in which the container case 15 loaded thereon is stored in the container case 15 for an operator or the like standing on the front side (right side in FIG. 3). In order to make it easy to see and display, or to make it easy to take out, it is configured to exhibit an inclination angle of about 15 degrees in the forward downward direction.
That is, in connecting the horizontal connecting material 5 of the fixed support 4 and the horizontal connecting material 11 of the movable support 8 with the rectangular article support frame 12, the height positions of the corresponding horizontal connecting materials 5 and 11 are as follows. It is designed and manufactured so as to realize a preferable forward and downward inclination angle according to the purpose of use of the transport cart. Thus, the transport cart of the present invention can be suitably used, for example, as a substitute for an article supply shelf or a display shelf.

  Since the transport cart of the present invention has the above-described configuration, in a normal use state in which the slide joint 7 at the lower end of the movable support column 8 is slid forward to the position where it abuts against the double joint 3 at the front end of the base frame 1, The article support frame 12 exhibits a certain downward inclination angle forward. However, when the slide joint 7 at the lower end of the movable support column 8 is slid on the base frame 1 to a position approaching the T-shaped joint 6 at the lower end of the fixed support column 4, as shown in FIG. The movable support 8 can be folded into a state in which the movable support 8 is close to the fixed support 4 and arranged substantially vertically by a combination of the rotating action by the rotary joint 13 and the action of sliding the sliding joint 14 by the vertical frame. Specifically, this folding operation is an operation of pushing up the vicinity of the left end of the upper article support frame 12 that protrudes largely to the left as shown in FIG. 2 upward (clockwise direction). Can be executed.

As shown in the plan view of the nesting state in FIG. 7, the relationship between the base frames 1 and 1 of the two transport carts is such that the base frames 1 and 1 are adjacent to each other. As shown in FIG. 6, the fixed struts 4 and the movable struts 8 can be nested side by side so as to be alternately approached, and can be managed in a small occupied area when not in use. In order to make such nesting possible, the horizontal connecting material closest to the base frame 1 among the horizontal connecting materials 5 of the fixed support columns 4 and 4 that connect the pair of fixed support columns 1 and 1 arranged in parallel at regular intervals. 5A is connected at a position above the upper surface of the base frame 1 and is configured not to interfere with the base frame 1 of the other cart.
In use, the case support cart in the folded state is also configured to slide the slide joint 7 at the lower end of the movable support column 8 on the base frame 1 to a position near the front end, more specifically, the above-described article support cart. The operation of rotating or pushing up the frame 12 in the counterclockwise direction can be executed simply and surely in one touch.

In the first embodiment, as typically shown in FIG. 4, the article support frame 12 has a planar shape of the container case 15 so that one container case 15 can be stacked on each stage of the article support frame 12. The container case 15 can be stacked in multiple stages only in the vertical direction, but this is not restrictive.
In Example 2 shown in FIG. 8, three horizontal joint members 5 and 11 are installed on the fixed support column 4 and the movable support column 8, and a total of three article supports are provided between the horizontal connection members 5 and 11. The frame 12 is connected and installed. Moreover, the structure of each article support frame 12 is such that the size and shape of the container case 15 is an integral multiple of the size of the planar shape so that two or three container cases 15 can be stacked side by side and in multiple rows. It is said that.
Accordingly, the container cases 15 can be stacked in multiple stages in the vertical direction, and a plurality of container cases 15 can be stacked in multiple rows horizontally on the article support frame 12 at each stage. Other configurations, functions, operations, and the like are the same as those in the first embodiment.

  Although the present invention has been described above based on the illustrated embodiment, of course, the present invention is not limited to the configuration of the above embodiment. It should be noted that the present invention may be implemented in various forms as design changes, applications, and modifications that would be made by those skilled in the art as needed without departing from the spirit and technical idea of the present invention. .

It is a perspective view which shows Example 1 of the conveyance trolley | bogie which concerns on this invention. It is a side view same as the above. It is a side view of the use condition which loaded the container case. It is a perspective view same as the above. It is a side view which shows a folded state. It is a side view which shows a nesting state. It is a top view same as the above. It is a perspective view which shows Example 2 of the conveyance trolley | bogie which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base frame 2 Caster 4 Fixed support | pillar 5 Lateral joint material 7 Slide joint 8 Movable support | pillar 11 Lateral joint material 12 Article support frame 13 Rotating joint 14 Sliding joint

Claims (4)

The pair of base frames are arranged in parallel at regular intervals in plan view, and downward casters are attached to the front and rear end positions of the base frame,
A fixed column is provided vertically at a position near the rear end of the base frame, and the pair of fixed columns are connected by a plurality of parallel horizontal connecting members,
A movable column having a lower end connected to the base frame so as to be slidable to a position near the front end is installed with an upper end rotatably connected to the upper end of the fixed column, and the pair of movable columns has a plurality of horizontal columns. Connected by a connecting material,
Corresponding height positions of the horizontal connecting member of the fixed column and the horizontal connecting member of the movable column are connected by an article support frame having a substantially rectangular shape in plan view, and the horizontal side of the article support frame and the movable column. The connecting material is rotatably connected, and the fixed support is connected to the lateral connecting material so as to be slidable,
In the use state in which the lower end of the movable column is slid on the base frame to a position near the front end, the article support frame exhibits a certain downward inclination angle forward, and the lower end of the movable column is placed on the base frame near the lower end of the fixed column. When it is slid to the position, the fixed column and the movable column are folded side by side, and the two trolleys in the folded state are in the same direction and the base frames are adjacent to each other so that each fixed column and the movable column are close to each other. A cart with folding and nesting functions, characterized in that it can be nestined side by side.   The lateral connecting material in the vicinity of the base frame for connecting the pair of fixed support columns is connected at a position above the base frame, and is configured not to interfere with the base frame during nesting. A transport cart having the folding and nesting functions described in 1.   The base frame, the fixed support column and its lateral connecting material, and the movable support column, its horizontal connecting material, and the article support frame are each assembled by a resin adhesive-coated steel pipe and a joint connecting the same. Item 3. A transport cart having a folding and nesting function according to item 1 or 2.   The base frame has a composite structure in which a plurality of resin adhesive-coated steel pipes are vertically stacked and connected together, and the lower end of the movable support column is configured to slide the uppermost resin-bonded steel pipe. A transport cart having a folding and nesting function according to any one of claims 1 to 3.

Images