JPH0260824B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an underfloor storage device that stores articles by utilizing an underfloor space.

[Conventional technology]

Conventionally, an underfloor storage device described in Japanese Utility Model Application Publication No. 60-121057 has been proposed. In the above-mentioned underfloor storage device, the area below the opening provided in the floor is used as the lifting area for the storage container, and a guide rail for horizontally moving the storage container is installed under the floor from the lifting area toward the back, and the lower part of the lifting area is A pantograph-like elevating platform is installed at the top.

As a result, the above-mentioned underfloor storage device stores the storage container at a desired position under the floor along the guide rail, and also raises the storage container set in the lifting area above the floor surface by operating the lifting platform to take in and take out items. It is possible to do this.

[Problem that the invention seeks to solve]

However, in the conventional underfloor storage device described above, a relatively large lifting platform is installed below the lifting area of the storage container. The installation height of the stand will be deducted. Therefore, the height of the storage container is too small compared to the total height under the floor, and there is a limit to the improvement in the utilization of the space inside the floor.

It is also conceivable to use an elevating screw shaft erected on the side of the elevating area as described in Japanese Utility Model Application Laid-open No. 53-117726 as the elevating platform used in the conventional underfloor storage device. However, in this case, the lifting fork screwed onto the lifting screw shaft supports the storage container in a cantilevered manner, and therefore the lifting fork exerts an excessive bending force on the lifting screw shaft. For this reason, it is difficult to ensure a smooth screwing state of the lifting fork with respect to the lifting screw shaft, and thus a smooth lifting and lowering operation of the storage container.

SUMMARY OF THE INVENTION An object of the present invention is to ensure smooth lifting and lowering of a storage container, and to expand the utilization of the underfloor space by increasing the height range that the storage container occupies under the floor.

[Means for solving problems]

The present invention provides an underfloor storage device that stores storage containers under the floor through an opening provided in the floor, in which the area below the opening provided in the floor is used as an area for raising and lowering the storage containers, and a plurality of storage containers are stored horizontally under the floor. A lifting fork is provided in which a guide rail to be moved is extended from the lifting area toward the back, lifting screw shafts are provided erected to face each other at least on both sides of the lifting area, and each lifting screw shaft supports an opposing portion of the storage container. A winding transmission is connected to the end of each lifting screw shaft, and a winding body that is wound around the full winding transmission is located at a position where it does not interfere with the lifting area and lateral movement area of the storage container. The winding body can be driven by a lifting motor that rotates in both forward and reverse directions.

[Effect]

According to the present invention, each of the plurality of storage containers is stored at a desired position under the floor along the guide rail, and when set in the lifting area, the lifting screw shaft and lifting fork are operated based on the operation of the lifting motor. It is raised above the floor by a screw motion, and articles are taken in and taken out.

Here, since the storage container is supported on both sides by the lifting forks screwed onto the opposing lifting screw shafts, the lifting forks do not exert excessive bending force on the lifting screw shafts. Moreover, since each lifting screw shaft is driven synchronously by the presence of each wrapping transmission wheel and wrapping body, each lifting fork can raise and lower the storage container in complete synchronization with each other. In other words, smooth lifting and lowering of the storage container can be ensured.

Further, the elevating means such as each elevating screw shaft is arranged around the elevating area of the storage container, and is not arranged below the elevating area. Therefore, the space below the elevating area of the storage container is not occupied by large members such as the elevating means, and the height range occupied by the storage container within the floor is increased to expand the utilization of the space within the floor. be able to.

〔Example〕

Fig. 1 is a plan view showing an underfloor storage device according to an embodiment of the present invention, Fig. 2 is a view taken along the - line in Fig. 1, and Fig. 3 is a view taken along the - line in Fig. 1. FIG. 4 is a sectional view taken along the - line in FIG. 2.

As shown in FIGS. 2 and 3, the underfloor storage device 10 stores a storage container 14 in an underfloor space 13 through an opening 12 provided in a part of a floor material 11. 11A
is a floor lid, and 14A is a container lid.

Here, the underfloor storage device 10 has the opening 12
The lower area is the lifting area for the storage containers 14, and a guide rail 15 for horizontally moving a plurality of (two in this embodiment) storage containers 14 is provided in the underfloor space 13, extending from the lifting area to the left and right. There is.

Here, each storage container 14 is mounted on a guide rail 15 via a trolley 16, respectively. The truck 16 is equipped with wheels 17 .

The trolley 16 also includes engaging parts 19A and 19B that engage in a wedge shape with the engaging parts 18A and 18B provided at both front and rear ends of the bottom of the storage container 14, and at the center of the bottom of the storage container 14. A protruding engagement portion 19 that engages with the provided concave engagement portion 18C
C, and these allow the storage container 14 to be moved to the trolley 1.
6 can be engaged and held in a predetermined position.

Each of the carts 16 is connected to each other by a connector 20. Also, in the underfloor space 13, there is a lateral movement motor 21 that rotates in both forward and reverse directions, and a lateral movement motor 2 that rotates in both forward and reverse directions.
A lateral movement chain 22 driven by 1 is wound around sprocket wheels 23A to 23D. One end of the lateral movement chain 22 is connected to one of the carts 16, and the lateral movement chain 22
The other end is connected to the other truck 16. A dog 24 is fixed to the middle part of the lateral movement chain 22,
At two positions along the lateral movement chain 22 in the underfloor space 13, there are limit switches 2 that are pushed down by the dog 24.
5A and 25B are installed. That is, each cart 16 can be moved along the guide rail 15 by normal or reverse rotation of the lateral movement motor 21. In the lateral movement motor 21, the dog 24 is connected to the limit switch 2.
When the dog 24 kicks down the limit switch 25B, it stops and sets one of the carts 16 to the lifting area, and when the dog 24 kicks down the limit switch 25B, it stops and sets the other cart 16.
Set in the lifting area.

In addition, the underfloor storage device 10 has four opposing bearing boxes 26 arranged at four side parts around the center of the lifting area, and each bearing box 26 has an lifting screw shaft 27.
is supported in an upright position. A lifting fork 28 is screwed onto each lifting screw shaft 27, and each lifting fork 28 supports the opposing bottom portions of the storage container 14 projecting to the sides of the cart 16 set in the lifting area.
The lifting fork 28 is connected to the slit 26A of the bearing box 26.
It moves up and down along the slit 26A and is prevented from rotating by the slit 26A. A sprocket wheel 29 is fixed to the upper end of each lifting screw shaft 27. Lifting chain 3
0 is wound around all the sprocket wheels 29 and is placed in a position where it does not interfere with the vertical movement area and the lateral movement area of the storage container 14. The lifting chain 30 is driven by an lifting motor 31 that rotates in both forward and reverse directions. That is, each elevating fork 28 is set at the lower limit position where it does not contact the storage container 14 when not in use, and when used, it is raised and lowered by the rotation of the elevating screw shaft 27 in conjunction with the operation of the elevating motor 31, and is moved to the four corners of the storage container 14. is held, the storage container 14 is lifted from the cart 16 and raised above the floor surface, and then the storage container 14 is lowered and transferred to the cart 16 again.

Note that the container lid 14A of the storage container 14, which is lifted by the lifting fork 28, has an engaging portion 32 provided on its outer peripheral edge in a wedge shape with an engaging portion 33 provided on the lower surface of the floor lid 11A. The storage container 14 and the floor cover 11A are engaged with each other to align the storage container 14 and the floor cover 11A, and the floor lid 11A is lifted together with the storage container 14 above the floor surface. Further, when the storage container 14 is lowered from above the floor surface to the underfloor space 13 by the lifting fork 28, the floor cover 11A moves the engaging portion 34 provided on the outer peripheral edge of the floor cover 11A to the opening of the floor material 11. 12
It engages in a wedge shape with an engaging portion 35 provided in the opening 12, and can be smoothly fitted into the opening 12.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the plurality of storage containers 14 are
Each is stored at a desired position under the floor along the guide rail 15, and raised above the floor by the screw movement of the lifting screw shaft 27 and the lifting fork 28 based on the operation of the lifting motor 31 while set in the lifting area. It is elevated to the top and goods are taken in and taken out.

Here, the storage container 14 is connected to the opposing lifting screw shaft 2.
Since it is supported on both sides by the lifting forks 28 screwed onto the lifting forks 7, each lifting fork 28 does not exert excessive bending force on the lifting screw shaft 27. In addition, each lifting screw shaft 27 is connected to each sprocket wheel 29.
Since they are driven synchronously due to the presence of the lifting chain 30, each lifting fork 28 can raise and lower the storage container 14 in complete synchronization with each other. In other words, smooth lifting and lowering of the storage container 14 can be ensured.

Furthermore, the elevating means such as the elevating screw shafts 27 are arranged around the elevating area of the storage container 14, and are not arranged below the elevating area. Therefore, the space below the lifting area of the storage container 14 is not occupied by large members such as the lifting means, and the height range occupied by the storage container 14 in the underfloor area is increased to increase the utilization of the underfloor space. Can be expanded.

The sprocket wheel 29 may be connected to the upper end of the lifting screw shaft 27 via a gear or the like.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to ensure smooth elevating and lowering of the storage container, and to increase the height range occupied by the storage container in the underfloor area, thereby increasing the utilization of the underfloor space.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an underfloor storage device according to an embodiment of the present invention, Fig. 2 is a view taken along the - line in Fig. 1, and Fig. 3 is a view taken along the - line in Fig. 1. FIG. 4 is a sectional view taken along the - line in FIG. 2. 10... Underfloor storage device, 11... Floor material, 12
... Opening, 13 ... Underfloor space, 14 ... Storage container, 15 ... Guide rail, 27 ... Lifting screw shaft,
28... Lifting fork, 29... Sprocket wheel (wrap transmission), 30... Lifting chain (wrap body),
31... Lifting motor.

Claims (1)

[Claims] 1. In an underfloor storage device that stores storage containers under the floor through an opening provided in the floor, the area below the opening provided in the floor is used as the area for raising and lowering the storage containers, and a guide for horizontally moving multiple storage containers under the floor. The rail is extended from the lifting area toward the back, and lifting screw shafts facing each other are set upright on at least both sides of the lifting area, and lifting forks that support opposing portions of the storage container are screwed onto each lifting screw shaft. A winding transmission is connected to the end of each lifting screw shaft, and the winding body that is wound around the full winding transmission is placed in a position that does not interfere with the lifting area and lateral movement area of the storage container. An underfloor storage device characterized in that it can be driven by a lifting motor that rotates in both forward and reverse directions.