JPS6236443Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a lower wheel device of a mobile shelf.

Generally, in order to configure a movable shelf such as a bookshelf to be movable along a ground rail provided on the floor, wheels that roll on the upper surface of the ground rail are provided on the lower frame of the movable shelf. In this case, if the beam member along the moving direction of the movable shelf in the lower underframe is formed to have an upwardly U-shaped cross section, and bearing holes are bored in both left and right vertical plate parts to directly support the axle, This axle tip protrudes outside and spoils the appearance. Therefore, a bearing hole is directly bored in the outer plate of the beam member in the lower underframe, and a U-shaped wheel mounting frame in plan view is inserted from the inner side of the outer plate. When the axle is supported by the wheel mounting frame and the outer plate, the appearance is not only visually appealing, but also the bolt or nut portion for removably attaching the wheel mounting frame to the outer plate protrudes. However, the mounting holes for this purpose also had the disadvantage of weakening the strength of the lower frame.

In the present invention, when fixing the wheel support frame body having a U-shape in plan view to the inside of the outer plate of the member extending along the movement direction of the shelf in the lower underframe of the movable shelf,
A bearing hole is drilled in the back plate of the wheel support frame, a shaft support plate is removably attached to the wheel support frame so as to face the back plate, and the bearing hole is formed in the shaft support plate. and the bearing hole of the back plate support the spindle of the wheel disposed between the two, so that the end of the spindle is not visible from the outside of the lower underframe, and the appearance is improved. The wheels can be easily attached and replaced, and an example of this will be explained based on a drawing. are detachably mounted, and these wheels 3 are connected to the lower rail device 4.
It is configured to roll along the upper surfaces of a pair of ground rails 5, 5.

The lower frame 2 of the movable shelf 1 has a pair of outer plates 6, 6 extending at least along the direction of movement of the shelf. For example, four beam members having a U-shaped cross section are assembled into a frame shape with their upper and lower horizontal plate parts 7, 7' facing inward, and bolts 8 are attached to each other at both ends of the horizontal plate parts 7, 7'. It becomes tight. Further, from the corner of the outer plate 64 of the lower frame 2, a post 9 having an L-shaped cross section is erected and abuts against the outer plate 64 from the outside.

A wheel support frame 10 having a U-shaped cross section in plan view is fixed to the inside of each of the outer plates 6 of the pair of members parallel to the moving direction of the lower underframe 2 so as to accommodate the wheels 3 therein. .

At this time, the back plate 11 of the wheel support frame 10 is brought into contact with the inner surface of the outer plate 6, and the outer plate 6 and the back plate 11 are brought into contact with each other.
The outer plate 6 and the back plate 11 may be welded to each other, and the upper or lower horizontal plate portions 7, 7' of the above members may be welded.
and appropriate locations on the wheel support frame 10 may be welded together. A bearing hole 13 for supporting one end of the support shaft 12 of the wheel 3 is bored in the back plate 11 of each of the wheel support frames 10.

Reference numeral 14 designates a shaft support plate that can be detachably fastened with bolts 16 to flange portions 15, 15 which are bent inwardly from both ends of the U-shaped cross section of the wheel support frame 10; The support plate 14 and the back plate 11 are arranged to face each other. Further, a bearing hole 17 is bored in the shaft support plate 14 so that the other end of the support shaft 12 can be supported therein.

Furthermore, a support shaft 1 is attached to the lower horizontal plate portion 7' of each member.
A hole 18 is bored through which the wheel 3 with wheels 3 can be inserted into the wheel support frame 10 from below.

Note that the ground rails 5, 5 of the lower rail device 4
are arranged and fixed within frame members 19, 19 each having an upwardly U-shaped cross section, and these frame members 19 are arranged parallel to the floor 20 with an appropriate distance between them, and a tread plate 21, such as a downwardly U-shaped cross section, is installed between them. A connecting member 22 that simultaneously covers these frame members and the end of the footboard 21 is screwed to the ends of both frame members 19, 19. Reference numerals 23 and 23 are spacers inserted between the lower surface of both the frame member 19 and the footboard 21 and the floor surface 20. Further, the tip of a metal fitting 24 having a Z-shaped cross section or the like and projecting downward from the lower surface of the lower frame 2 is made to face the lower surface of the upper end side inward cover portion 19' of the frame member 19, so that the movable shelf is Constructed to prevent falls.

With this configuration, the wheels 3 with support shafts 12 are inserted from below into the wheel support frames 10 fixed to the inside of the pair of outer plates 6, 6 constituting the lower underframe 2 of the movable shelf 1, and the wheels 3 with support shafts 12 are inserted from below. One end of the wheel support frame 1
0, the other end of this support shaft 12 is inserted into the bearing hole 17 of the shaft support plate 14, and the support shaft plate 14 is inserted into the left and right flange portions 15, 1.
Bolts 16,
16. To replace wheel 3,
If the shaft support plate 14 is removed from the wheel support frame 10, it can automatically come out downward.

The left and right flanges 15, 15 of the wheel support frame 10 may be bent outward from their U-shaped tips in plan view.

In summary, according to the present invention, in a movable shelf that is movable along the upper surface of a lower rail device disposed on the floor, the inner side of the outer plate of the lower underframe that extends along the moving direction of the shelf has a planar U-shape. A wheel support frame of the shape is fixed so that its back plate faces the inner surface of the outer plate, and a bearing hole is bored in this back plate to support one end of the wheel spindle. The supporting shaft is not clearly visible from the outside of the lower underframe, resulting in an excellent appearance, and since no holes are drilled in the outer plate of the lower underframe, a decrease in strength can be prevented. Further, the other end of the support shaft can be supported by the shaft support plate disposed opposite to the back plate, and the opening of the wheel support frame can be covered with this shaft support plate, thereby increasing the rigidity of the wheel support frame. It also becomes more expensive.
Furthermore, since the shaft support plate can be detachably attached to the wheel support frame, it is possible to easily replace the wheel.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of a movable shelf, FIG. 2 is a perspective view of a lower frame, and FIG. 3 is an enlarged sectional view of FIG. 1. 1...Moving shelf, 2...Lower underframe, 3, 3, 3,
3...Wheel, 4...Lower rail device, 6,6...
Outer plate, 10... wheel support frame body, 11... back plate,
12... Support shaft, 13, 17... Bearing hole, 14...
Axial support plate.

Claims (1)

[Scope of utility model registration request] In a movable shelf that is movable along the upper surface of a lower rail device disposed on a floor surface, on the inside of an outer plate of the lower underframe that extends along the moving direction of the movable shelf,
A wheel support frame having a U-shape in plan is fixed so that its back plate faces the inner surface of the outer plate, and a shaft support plate is removably attached to the wheel support frame so as to face the back plate. A lower wheel device for a movable shelf, wherein the back plate and the shaft support plate are provided with a bearing hole for supporting a support shaft end of a wheel disposed between the back plate and the shaft support plate.