JP2795166B2 - Moving shelf - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving shelf supported and guided via rails on rails installed in, for example, a warehouse or a factory.

[0002]

2. Description of the Related Art Conventionally, as a moving shelf of this type, there is one disclosed in Japanese Utility Model Laid-Open Publication No. 3-51706, for example. That is, the lower frame body of the moving shelf is composed of side lower frames located on both sides in the moving direction, an intermediate lower frame located in the middle, and a connecting member provided between these side lower frames and the intermediate lower frame. (Left and right frames). The intermediate lower frame is divided into two parts at the front and rear, and each divided frame is provided with a pair of front and rear wheels.

Elongated holes are formed in the adjacent portions of the two divided frames, and the two divided frames are relatively swung up and down through left and right pins (bolts and nuts) and links passing through the elongated holes. They are freely connected.

According to this, as shown in FIG.
Even if unevenness (deflection) in the vertical direction occurs in the 50, the one divided frame 51 and the other divided frame 52 relatively swing in the vertical direction along the unevenness of the rail 50, so that the two divided frames 51, 52 Each of the wheels 53 is pressed against the upper surface of the rail 50 without being lifted off the rail 50, and travels reliably, and the load acts equally on the four wheels 53.

[0005]

However, in the above-mentioned conventional type, one intermediate lower frame must be assembled by connecting the two divided frames with pins and links, and the intermediate lower frame must be assembled. It took time to assemble the frame. Further, when assembling the lower frame, it is difficult to handle the two divided frames by inadvertently swinging or separating them separately, so that assembling the lower frame takes time.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a movable shelf having a lower frame body which can be easily assembled.

[0007]

According to a first aspect of the present invention, there is provided a movable shelf supported and guided by rails via a plurality of wheels, the movable shelf being provided on a lower frame body. The lower frame body, the side lower frame located on both sides in the moving direction, the intermediate lower frame located in the middle, and a connecting material provided between these side lower frame and the intermediate lower frame And a notch in the vertical direction is formed in the center of the intermediate lower frame, and a plurality of the wheels are respectively allocated to the front and rear of the notch and attached to the intermediate lower frame.

According to a second aspect of the present invention, the intermediate lower frame includes a top plate.
And the side plate portions hanging down from both ends of the top plate portion.
It is formed in a gate shape with a lower opening in front view, and the notch is
From the top plate of the intermediate lower frame to the lower part of both side plates
It has been formed.

According to a third aspect of the present invention, the intermediate lower frame includes a top plate.
And a side plate hanging down from both sides of the top plate.
Horizontal overhang extending from the lower end of these side plates to the left and right sides
It is formed in a gate shape with a lower opening in front view,
The notch extends from the top plate of the intermediate lower frame to both side plates.
Formed over the base end of the horizontal overhang
Things.

[0010]

According to the structure of the first aspect of the present invention, the portion of the intermediate lower frame where the notch is formed is more flexible than the other portions of the intermediate lower frame, so that the rail has unevenness (bending) in the vertical direction. Even if it occurs, the portion where the notch is formed bends in the middle lower frame, and the front portion and the rear portion of the notch relatively swing around the notch in the vertical direction along the unevenness of the rail. . As a result, each wheel of the intermediate lower frame does not rise from the rail,
The rail is pressed against the upper surface of the rail and travels reliably, and the load acts equally on each wheel.

Further, the middle lower frame is a single piece and is not divided as in the prior art, so that the middle lower frame can be easily assembled. Further, since the middle lower frame can be easily handled, the lower frame body can be assembled. Will also be easier.

According to the second aspect of the present invention, the rail is mounted on the rail.
Even if downward irregularities (deflection) occur, the middle lower frame
Is bent around the notch
And the front and rear parts of the notch are
It swings up and down relatively. This allows the lower middle
Each wheel of the frame rises from the rail
Without being pressed against the top of the rails
The load acts equally on each wheel.

Further , the intermediate lower frame is a genuine article,
Because it is not divided as in the middle lower frame
Easy to assemble.
Easy handling makes it easy to assemble the lower frame
Become.

According to the third aspect of the invention, the intermediate lower flange is provided.
The part where the notch of the frame is formed is the middle lower frame
For more flexibility than other parts,
Even if vertical asperities (bending) occur, the middle lower frame
When the notch is bent, the part with the notch
The front and rear parts of the notch are centered on the rail.
Swings up and down relative to each other. By this, the lower middle
Each wheel of the section frame rises from the rail
Without being pressed against the upper surface of the rail
The load acts equally on each wheel.

Also, the intermediate lower frame is a genuine article,
Because it is not divided as in the middle lower frame
Easy to assemble.
Easy handling makes it easy to assemble the lower frame
Become.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 4 and 5, between a pair of front and rear fixed shelves 1, a plurality of rails 4 support and guide a plurality of rails 4 via a plurality of wheels 2, 3a, 3b, and can reciprocate in the direction between the fixed shelves 1. A plurality of movable shelves 5 are provided. Each of the movable shelves 5 includes a lower frame body 6 and a pair of front and rear shelves 7a and 7b provided on the lower frame body 6.

As shown in FIG. 2, the lower frame 6
Are lower side frames 9 located on the left and right sides with respect to the moving direction (front-rear direction), a pair of left and right intermediate lower frames 10 located on the inner side, and a pair of lower end frames 9 And a plurality of connecting members 11 for connecting between the central portions to form a frame.

Each side lower frame 9 includes a top plate portion 12 and a pair of left and right side plate portions 13 suspended from both ends of the top plate portion 12.
And a horizontal projecting portion 14 projecting right and left outward from the lower end of the side plate portion 13 to form a gate shape with a lower opening when viewed from the front. Each of the lower frames 9 is provided with two wheels 2 distributed to both front and rear ends, and these wheels 2 are attached freely through a support shaft 15 inserted between a pair of side plates 13. ing.

Similarly, as shown in FIG. 3, each intermediate lower frame 10 also includes a top plate portion 16, a pair of left and right side plate portions 17 suspended from both ends of the top plate portion 16, and a pair of left and right side plate portions 17. With the horizontal overhanging part 18 that protrudes left and right outward from the lower end of the
It is formed in a gate shape with a lower opening when viewed from the front. At the center of each intermediate lower frame 10, a notch 19 is formed in the vertical direction. The notch 19 is located in the middle lower frame.
It is formed from the top plate part 16 of the ten to the lower part of both side plate parts 17. As shown in FIG.
The two wheels 3a, 3b are provided in front of and behind the notch 19, two by two. These wheels 3a, 3b
The two lower plates 10 are connected to each other by a drive shaft 21 between the wheels 3a at one end of the intermediate lower frames 10, as shown in FIG. An electric motor 22 for rotating the two wheels 3a is mounted on one intermediate lower frame 10.

As shown by the imaginary line in FIG. 1, a support plate for preventing accidents is provided between the lower portion of one of the front and rear side plate portions 17 and the lower portion of the other side plate portion 17 around the cutout portion 19. Connected at 24. These support plates 24 should not be
The middle lower frame 10 is notched 19 due to cracks
This is a safety device provided to prevent an accident such that the traveling of the movable shelf 5 is hindered by being separated from the outside, and is attached to the outer surface of the side plate portion 17 by bolts and nuts 25.

Of the pair of front and rear shelves 7a and 7b, one of the shelves 7a is disposed on the lower frame 6 at one of the front and rear of the notch 19, and the other shelf 7b is disposed on the lower frame 6
Above, it is arranged on the other side before and after the notch 19. As shown in FIG. 4, a plurality of upper and lower storage spaces 26 are formed in each of the shelves 7a and 7b.

The operation of the above configuration will be described below.
When the motor 22 is driven and the wheels 3a are forcibly rotated, the movable shelf 5 travels while being supported and guided by the rails 4, and is moved to the front side of the target movable shelf 5 as shown in FIGS. Space S is formed. When the movable shelf 5 travels, even if the rails 4 have irregularities (deflection) in the vertical direction, the portion of the intermediate lower frame 10 where the notch 19 is formed is compared with other portions of the intermediate lower frame 10. As shown in FIG. 6, the middle lower frame 10 has a bent portion where the notch portion 19 is formed, and the front portion and the rear portion of the notch portion 19 center around the notch portion 19. The rail 4 swings up and down along the irregularities of the rail 4. As a result, the wheels 3a and 3b of the intermediate lower frame 10 are pressed against the upper surface of the rail 4 and run reliably without being lifted from the rail 4, and the load acts equally on the wheels 3a and 3b.

Also, the intermediate lower frame 10 is a real one,
Because it is not divided as before, the middle lower frame
10 is easy to assemble, and the lower intermediate frame 10
Can be easily handled, so that the lower frame body 6 can be easily assembled.

The intermediate lower frame 10 is provided with four wheels 3a and 3b. This is to sufficiently support the load acting on the intermediate lower frame 10, and acts on the side lower frame 9. Since the load is almost half of the load acting on the intermediate lower frame 10, it is only necessary to provide two wheels 2 on the side lower frame 9. For these reasons, since the wheels 2 are provided only at the front and rear ends of the side lower frame 9, even if the rails 4 have unevenness (deflection) in the vertical direction, the wheels 2 of the side lower frame 9 Each of the wheels 4 is always pressed against the upper surface of the rail 4 without being lifted off the rail 4 and travels reliably, and the load acts on both wheels 2 equally.

In the above embodiment, as shown by the phantom line in FIG. 1, the notch 19 is provided with the support plate 24 for preventing accidents to improve the safety. However, the notch 19 may be cracked. If not, the support plate 24 may be unnecessary.

In the above embodiment, as shown in FIG. 2, the wheels 2 are provided only at the front and rear ends of the side lower frame 9. However, like the intermediate lower frame 10, the side lower frame 9 has four wheels and notches. May be provided. Also, the middle lower frame
In FIG. 10, two wheels 3a and 3b are separately mounted on the front and rear of the notch portion 19, respectively, but three or more wheels 3a and 3b may be separately mounted.

In the above embodiment, as shown in FIG. 2, two intermediate lower frames 10 (a pair of left and right) are provided, but one or three or more intermediate lower frames 10 may be provided depending on the width of the movable shelf 5. . In the above embodiment, the notch 19 is used as shown in FIG.
Are formed vertically from the top plate portion 16 of the intermediate lower frame 10 to the lower portion of both side plate portions 17, but the horizontal overhang portion 18 is formed.
It may be formed over the upper portion of both side plate portions 17 to.

Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. In the second embodiment, the notch 19 of the first embodiment is further extended downward.
That is, the cutout portion 35 of the second embodiment is formed from the top plate portion 16 of the intermediate lower frame 10 to the base end portion of the horizontal overhang portion 18 via both side plate portions 17. According to this, since the formation range of the notch 35 is extended downward as compared with that of the first embodiment, the flexibility of the portion of the middle lower frame 10 where the notch 35 is formed further increases. Therefore,
In response to slight irregularities (deflection) generated on the rails 4, the front and rear portions of the notch 35 of the intermediate lower frame 10 can vertically swing relative to the notch 35 in the vertical direction.

At the time of manufacture, the intermediate lower frame 10 is first formed with a cutout 35 in a flat plate of a material and then formed into a gate shape by bending, but the strength of the flat plate and the accuracy of bending are ensured. Notch as shown by the imaginary line in FIG.
Bending is performed with the communication piece 36 remaining in a part of 35, and after processing, the communication piece 36 is cut.

[0030]

As described above, according to the first aspect of the present invention, the portion of the intermediate lower frame where the cutout portion is formed is more flexible than the other portions of the intermediate lower frame, so that the vertical lower rail is attached to the rail. Even if unevenness (bending) occurs, the middle lower frame will bend at the part where the notch is formed, and the front part and the rear part of the notch will be centered on the notch, and the vertical direction will follow the unevenness of the rail. Swings relatively. Thus, each wheel of the intermediate lower frame is pressed against the upper surface of the rail and travels reliably without being lifted from the rail, and the load acts equally on each wheel.

Further, the intermediate lower frame is one piece and is not divided as in the prior art, so that the intermediate lower frame can be easily assembled. Further, since the intermediate lower frame can be easily handled, the lower frame body can be assembled. Will also be easier.

According to the second aspect of the present invention, the rail is vertically
Even if unevenness (bending) occurs, the middle lower frame is notched
The part where the part was formed bends and cuts around the notch
The front part and the rear part of the notch are along the rail irregularities
Relative swing downward. This allows the middle lower frame
Each wheel of the
The rail is pressed against the top of the rail and travels reliably.
Acts equally on each wheel.

Also, the intermediate lower frame is one and
Because it is not divided as in the middle lower frame
Easy to assemble.
Easy handling makes it easy to assemble the lower frame
Become.

According to the third invention, the intermediate lower frame is
The part where the notch is formed is the other part of the middle lower frame
The rails have more flexibility compared to
Even if irregularities (deflection) occur, the middle lower frame
The part where the notch is formed is bent, and centering around the notch
The front part and the rear part of the notch are along the rail irregularities
Up and down relative swing. This allows the middle lower frame
Each wheel of the system does not rise from the rail
The rail is pressed against the top of the rail and travels reliably.
Acts equally on each wheel.

Also, the intermediate lower frame is one and
Because it is not divided as in the middle lower frame
Easy to assemble.
Easy handling makes it easy to assemble the lower frame
Become.

[Brief description of the drawings]

FIG. 1 is a side view of an intermediate lower frame of a movable shelf according to a first embodiment of the present invention.

FIG. 2 is a plan view of a lower frame body of the movable shelf.

FIG. 3 is a perspective view of a cutout portion formed in an intermediate lower frame of the moving shelf.

FIG. 4 is a side view of the moving shelf.

FIG. 5 is a plan view of the moving shelf.

FIG. 6 is a side view for explaining the function of a notch of an intermediate lower frame of the movable shelf.

FIG. 7 is a perspective view of a cutout portion formed in an intermediate lower frame of a movable shelf according to a second embodiment of the present invention.

FIG. 8 is a side view of a cutout portion of the intermediate lower frame.

FIG. 9 shows a conventional dividing of a lower middle frame of a moving shelf .
It is a side view explaining the function of a frame.

[Explanation of symbols]

 2 Wheel 3a, 3b Wheel 4 Rail 5 Moving shelf 6 Lower frame body 7a, 7b Shelf 9 Side lower frame 10 Intermediate lower frame 11 Connecting material 16 Top plate 17 Side plate 19 Notch 35 Notch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-254617 (JP, A) JP-A-4-256610 (JP, A) Japanese Utility Model Application Sho 57-104932 (JP, U) Japanese Utility Model Utility Model No. 3- 51706 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65G 1/10 A47B 53/02

Claims (3)

(57) [Claims] 1. A movable shelf supported and guided by rails via a plurality of wheels and movable, wherein a shelf is provided on a lower frame body, and the lower frame body is positioned on both sides in the moving direction. Side lower frame, an intermediate lower frame positioned in the middle, and a connecting member provided between these side lower frames and the intermediate lower frame, and a notch in the vertical direction at the center of the intermediate lower frame. And a plurality of the wheels are respectively assigned to the front and rear of the cutout portion and attached to the intermediate lower frame. 2. The intermediate lower frame includes a top plate and the top plate.
With the side plates hanging down from both ends of the plate,
It is formed in a gate shape with a lower opening, and the notch is
It is formed from the top of the frame to the lower part of both sides.
The movable shelf according to claim 1, wherein the movable shelf is provided. 3. The intermediate lower frame includes a top plate portion and the top plate portion.
Side plates hanging down from both ends of the plate
With horizontal overhangs that protrude left and right outward from the lower end
It is formed in a gate shape with a lower opening in front view, and the notch is
Horizontally from the top plate of the above middle lower frame via both side plates
It is characterized by being formed over the base end of the overhang
The moving shelf according to claim 1, wherein