JPH07408Y2 - Mobile shelf underframe structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underframe structure including wheels in a movable shelf that can be moved manually or automatically.

2. Description of the Related Art Mobile shelves generally move smoothly on rails laid on the floor via wheels, and there are various examples in which wheels are provided on the underframe of the moving shelf. Among them, the saddle of the underframe is used as a channel. With a circular shape and its opening facing upward (Jitsuko Sho 62-36
441 publication).

In the one described in the example, a wheel beam corresponding to a saddle is formed in a U-shape in an upward cross section, and the wheel is rotatably supported on both left and right sides in the U-shape groove so that the lower end of the wheel is supported. It projects downward from the lower end of the wheel beam.

Further, the bottom plate, which is the lowermost shelf plate in the shape of a flat box with its edge bent over the wheels, is arranged.

Further, the flange portions are projected outward from each other from the upper ends of the wheel beams.

Furthermore, the column 8 is not directly supported by the wheel beam 11.

Therefore, the storage surface of the box-shaped base plate is located above the wheels at a high position by the thickness of the box-shaped main plate, and the storage efficiency is poor.

It should be noted that if the diameter of the wheel is made smaller, the height of the shelf plate can be made lower and the storage efficiency can be improved, but running resistance becomes large and it cannot withstand a heavy load.

In addition, since the flanges project outward from each other from the upper ends of the wheel beams, when the column is erected on the wheel beam as a support, the flanges project outside the columns and the columns of the moving shelf Besides the inner storage space, the entire width of the movable shelf is increased by the amount that the storage shelf is extended to the outside, thus increasing the installation area.

Further, since the wheel beam is not directly used to support the support pillar, a separate member for supporting the support pillar is required, resulting in an increase in the number of parts and a troublesome assembly.

The present invention has been made in view of the above point, and an object thereof is to provide an underframe structure capable of easily configuring a moving shelf with high storage efficiency by effectively utilizing the installation area of the moving shelf.

Means and Actions for Solving the Problems In order to achieve the above object, the present invention has a movable shelf that moves back and forth in a direction perpendicular to a front surface, and has a channel-shaped cross section and an upward opening. A long saddle is part of the underframe before and after bending the upper ends of the opposite side walls in the same direction inside the shelf leaving some upward openings.
A shelf pillar is inserted from the upward opening of the saddle, the bottom wall of the saddle supports the lower end of the shelf pillar, and the shelf is erected on the underframe. A hole is bored, an axle is installed between both side walls at the same front and rear position as the wheel hole, and a wheel pivotally supported by the axle is fitted in the wheel hole and a part thereof is projected below the saddle to partially Has an underframe structure of a movable shelf projecting upward from the saddle.

Since the upper part of the wheel pivotally supported by the channel-shaped saddle with the opening facing upward projects above the saddle, by placing the wheel upper part inside the flat box-shaped shelf plate and placing the shelf plate. The surface on which the stored items are placed can be located at a position slightly higher than the wheels by the thickness of the shelf plate.

Therefore, the mounting surface of the shelf plate can be lowered and the storage efficiency can be improved even with a wheel having a diameter large enough to withstand a large load and keep running resistance small.

In addition, the upper ends of both side walls of the saddle are bent in the same direction inside the shelf to increase the strength of the saddle, and the shelf pillar is fitted and supported in the channel-shaped saddle that opens upwards, so that it is outside the shelf pillar. Since it is not necessary to unnecessarily widen the entire width of the movable rack by eliminating the protruding portion, it is possible to effectively utilize the installation area of the movable rack to provide an underframe structure of the movable rack with excellent storage efficiency.

Further, since the shelf post is inserted into and supported by the channel-shaped saddle that opens upward, the shelf post is firmly supported and the bottom wall is loaded, so that the mounting bolt is not overloaded and of special strength. There is no need to screw it with a certain bolt,
In addition, a special member for supporting the shelf is not required, the number of parts is small, and assembly is easy.

Embodiment An embodiment according to the present invention shown in FIGS. 1 to 8 will be described below.

As shown in FIG. 1 to FIG. 3, the movable rack of this embodiment has a unit rack group in which adjacent frontages are in contact with each other at the time of focusing and are movable in the depth direction. It is configured so that a passage can be manually formed between adjacent unit shelves.

The unit shelf 1 includes an underframe 2 including a saddle 3 and front and rear frames 4,
Mainly composed of a shelf pillar 5 and a top plate 6, which are erected at the front and rear ends and the center of the saddle 3, a shelf plate 7, and a mesh side plate 8, and wheels 9 provided at the front and rear of the saddle 3 are laid on the floor surface. You can roll on the rail 10 and run.

A handle 11 is attached to the central shelf 5 and an operator can easily move the unit shelf 1 by holding the handle 11 and applying a force in the front-back direction.

The mounting structure of the underframe 2 of the unit shelf 1, the shelf columns 5, the wheels 9, etc. will be described based on the exploded perspective view of FIG.

The saddle 3 has a channel-shaped cross section, and is oriented in the front-back direction with the opening facing upward.
A part of the upper end of 3a is bent inward, and a bent piece 3b is formed except for the front and rear ends and the part where the central shelf 5 is erected.

A rectangular wheel hole 20 is formed in the front and rear of the bottom wall 3c of the saddle 3 slightly toward the center from the front and rear ends.

A pair of circular holes 21 for axles are formed facing both side walls 3a at the same front and rear position as the wheel hole 20.

On the other hand, the wheel 9 has a bearing 22 inside, and cylindrical collars 23 are coaxially abutted on both side surfaces of the inner ring and are fitted in the wheel holes 20 between the both side walls 3a of the saddle 3 to form a rotation center shaft. Are aligned with the center of the circular hole 21 of the side wall 3a, and the axle 24 is penetrated from the outside.

Therefore, the wheel 9 is rotatably supported with a part thereof protruding downward from the bottom wall 3c of the saddle 3. Axle
A groove 24a is formed at a predetermined position near both ends of the groove 24. After passing through the side wall 3a of the saddle 3 and the bearing 22 of the axle 9, the snap rings 25 are fitted to the groove grooves 24a from the outer side so as not to fall off. To be

The front and rear frames 4 attached to the front and rear of the pair of left and right saddles 3,
It is also bent like a channel and the opening is directed inward. To explain the front and rear frames 4, the left and right ends of the front wall 4a are bent backward to form bent pieces 4b, and the upper wall 4c.
Both ends are notched by the distance between both side walls 3a of the saddle 3.

A circular hole 30 is provided in the vicinity of both ends of the front wall 4a of the front and rear frame 4,
An impact rubber 31 is fitted in the 30.

Both ends of the front wall 4a of the front-rear frame 4 are applied to the front end of the saddle 3, and the bending piece 4b and the lower wall 4d are in contact with the outer side wall 3a and the bottom wall 3c of the saddle 3 from the outside, and both are welded to each other. Is formed.

The shelf 5 has an L-shaped cross section, and a plurality of mounting holes 40 are formed in each side plate at predetermined intervals.

At the corners of the underframe 2, such shelf posts 5 are erected upright along the side walls of the underframe 2 with the lower end portions of the side plates, and the bottom wall 3c of the saddle 3 is provided.
The upper and lower two mounting holes 41 and the rack 5 are provided at required positions on the outer side wall 3a of the saddle 3.
The two mounting holes 40 on the lower side are aligned with each other, and the bolts 42 are penetrated and screwed by nuts 43 to tighten them.

There are two shelf posts 5 standing in the center of the saddle 3, one for the front shelf and one for the rear shelf. One side plate faces each other, and the other side plate extends along the inner surface of the outer side wall 3a of the saddle 3. At the same time, it stands on the bottom wall 3c, the mounting holes 40, 41 are aligned with each other, the bolt 42 is passed through, and the nut 43 is screwed and fixed.

In this way, the top plate 6 and the shelf plate 7 are erected on the shelf columns 5 which are set up in the front and rear, respectively.

The details of the essential parts of the unit shelf 1 assembled in this way are described in the sixth section.
It is illustrated in FIGS.

The rail 10 on which the unit shelves 1 are mounted via wheels 9 has a semi-cylindrical ridge 10a formed in the center of a long plate, and is made of mortar with a trapezoidal cross section laid on the floor surface 50. Rail support 52 that is applied from the top surface of the base 51 to one side surface
The rail 10 is laid on the upper surface of the rail 10 via the rails, and both side portions 10b of the protrusion 10a are fixed to the rail receiver 52 with screws 53.

The rail receiver 52 and the base 51 are fixed to the floor surface 50 by being inserted through the anchor bolts 54 below the protrusion 10a of the rail 10.

The groove 10 at the center of the wheel 9 is fitted so that the protrusion 10a of the rail 10 laid in this way is groined, so that the unit shelf 1 is stably placed on the two rails 10 on the left and right.

As described above, in the movable shelf of this embodiment, since the saddle 3 is opened upward, it is not necessary to process the saddle 3 or use a special member to stand the shelf 5. It doesn't take much time to make.

Further, since the shelf 5 is supported by the bottom wall 3c of the saddle 3, an excessive load is not applied to the mounting bolt 42, and it is not necessary to use a bolt having special strength.

Further, since the upper side of the wheel 9 is open, the unit shelf 1
The inspection work can be performed with the rail 22 mounted on the rail 10 without lifting, and the lubricating oil can be easily injected into the bearing 22, which is extremely convenient.

Since the upper portion of the wheel 9 can be projected above the saddle 3 to a position where it can be accommodated in the thickness of the shelf plate 7 in contact with the underframe 2, the thickness (vertical width) of the underframe 2 can be reduced as in this embodiment. It is possible to

This means that the shelf surface of the shelf plate 7 on which the stored items are mounted is located at a position slightly higher than the wheel 9 by a thickness of the shelf plate 7, and the mounting surface is kept low to store the storage efficiency. Can be higher.

The upper ends of both side walls 3a of the saddle 3 are partially bent inward to form bent pieces 3b to increase the strength of the saddle 3, and especially the bent pieces 3b of the outer side wall 3a are bent inward. Since it is not necessary to extend the side plate outside the shelf column 5 fitted and supported in the channel-shaped saddle 3 having an opening at the upper side, the entire width of the movable shelf is not unnecessarily widened. It is possible to provide an underframe structure of a moving shelf with excellent storage efficiency by effectively utilizing the installation area of.

Effect of the Invention According to the present invention, since the upper part of the wheel pivotally supported by the channel-shaped saddle with the opening facing upward projects above the saddle, the upper part of the wheel is enclosed inside the flat box-shaped shelf plate and the shelf is enclosed. By placing the plate, the placement surface of the stored items can be positioned slightly higher than the wheels by a thickness of the shelf plate.

Therefore, the mounting surface of the shelf plate can be lowered and the storage efficiency can be improved even with a wheel having a diameter large enough to withstand a large load and keep running resistance small.

In addition, the upper ends of both side walls of the saddle are bent inward in the same direction to increase the strength of the saddle, and when the shelf column is fitted and supported in the channel-shaped saddle that opens upward, it projects outward from the shelf column. Since there is nothing to do and it is not necessary to unnecessarily widen the entire width of the movable rack, it is possible to effectively utilize the installation area of the movable rack and provide an underframe structure of the movable rack with excellent storage efficiency.

Further, since the shelf post is inserted into and supported by the channel-shaped saddle that opens upward, the shelf post is firmly supported and the bottom wall is loaded, so that the mounting bolt is not overloaded and of special strength. There is no need to screw it with a certain bolt,
In addition, a special member for supporting the shelf is not required, the number of parts is small, and assembly is easy.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a movable shelf according to an embodiment of the present invention,
FIG. 2 is a front view showing a front surface of a unit shelf of the embodiment, and FIG.
The figure is the same side view with the side plate 8 removed, FIG. 4 is an exploded perspective view of the underframe and the surroundings of the underframe, FIG. 5 is a cross-sectional view of the saddle, FIG. 6 is a front view of the main part of the underframe, and FIG. Is a side view of the same, and FIG. 8 is a plan view of the same. 1 ... Unit shelf, 2 ... Underframe, 3 ... Saddle, 4 ... Front / rear frame, 5 ... Shelf column, 6 ... Top plate, 7 ... Shelf plate, 8 ... Side plate, 9 ... Wheel , 10 …… rail, 11 …… grip, 20 …… wheel hole, 21 …… circle hole, 22 …… bearing, 23 …… color,
24 …… axle, 25 …… snap ring, 30 …… circular hole, 31…
… Impact rubber, 40,41 …… Mounting hole, 42 …… Bolt, 43 ……
Nut, 50 ... Floor, 51 ... Base, 52 ... Rail receiver,
53 …… screw, 54 …… anchor bolt

Claims (1)

[Scope of utility model registration request] 1. A movable shelf which moves back and forth in a direction perpendicular to a front surface, has a cross section bent in a channel shape so that an opening faces upward, and upper ends of both side walls facing each other leaving a part of the upward opening. The inside of the shelf is bent in the same direction, and a long saddle is used as a part of the underframe, and a shelf post is inserted from the upward opening of the saddle, and the bottom wall of the saddle supports the lower end of the shelf post. Stand upright on the underframe, a rectangular wheel hole is drilled in the bottom wall near the front and rear ends of the saddle, and an axle is installed between both side walls at the same front and rear position as the wheel hole. An underframe structure for a movable shelf, characterized in that a shaft-supported wheel is fitted in the wheel hole and a part of the wheel is projected below the saddle and a part of the wheel is projected above the saddle.