JP2566727Y2 - Lifting device for shelves - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device capable of continuously adjusting the height of a shelf of a display shelf.

[0002]

2. Description of the Related Art Conventionally, as a display shelf capable of adjusting the height of a shelf board, for example, a display shelf having a structure as shown in FIG. 3 is known. This display shelf has a pair of right and left vertical supports 101 so as to form an L-shaped frame as a whole.
And a pair of left and right horizontal leg members 102.
01 and the leg members 102 are connected by an appropriate number of cross beams 103. A pair of front and rear abutments 104 are mounted on the lower surfaces of the left and right leg members 102, respectively.

The column 101 has a rectangular shape with a hollow cross section.
On its front surface, a number of vertically long slits 105 are vertically arranged at a predetermined pitch. The slits 105 in the left and right columns 101 are provided symmetrically at the same height.

[0004] A bracket 106 for holding a shelf made of a plate material having an appropriate thickness is formed with a horizontal upper edge on which the shelf 108 is placed and a vertical rear edge abutting on the column 101. I have. Also, on the rear edge, a slit 105 of the support 101 is provided.
Are inserted into the slit 105
It protrudes at a pitch that matches. On the lower surface of the base of each hook 107, a notch slightly wider than the thickness of the front wall of the column 101 is formed. After the hook 107 is inserted into the slit 105 and the bracket 106 is pressed down, the notch is formed. The lower bracket 105 is engaged with the lower side, and the bracket 106 is fixed to the column 101.

[0005] From among a number of slits 105 arranged in the left and right columns 101, one having a required height position is selected.
By attaching the bracket 106, the bracket 1
06, that is, the height of the shelf 108 placed on the bracket 106 can be adjusted in units of the pitch of the slits 105.

[0006]

However, in the display shelf shown in FIG. 3, the height position of the shelf plate 108 can be adjusted only by using the pitch at which the slits 105 are arranged as a unit. Fine adjustment is not possible.

Further, in order to hold the shelf plate 108 horizontally, one having the same height position is selected from a number of slits 105 arranged in a row on the left and right columns 101, respectively.
It is necessary to mount the bracket 106, but if the distance between the left and right columns 101 is long, the left and right
06 may be mistakenly mounted at a different height.
In addition, in that case, there is a disadvantage that the height of the right and left sides is not the same for the first time when the shelf plate 108 is placed.

[0008] Further, when the height position of the shelf 108 which is already displayed and in use is changed, the shelf 1
08, it is necessary to take down the article placed on it and once remove the shelf board 108 itself, which is inconvenient.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate these disadvantages in conventional display shelves and the like, to adjust the height position of a shelf platelessly, and at that time, to a shelf plate and articles mounted thereon. It is an object of the present invention to provide a device for raising and lowering a shelf plate, which can adjust a height position without taking off a rack.

[0010]

In order to achieve the above-mentioned object, a lifting device such as a shelf board of the present invention comprises two columns which are erected in parallel with each other and a rack which is provided on each column in a vertical direction. Means and a lifting device such as a shelf board comprising a bracket provided so as to be able to move up and down along each column via gear means meshing with the rack means, and a lift drive device for driving the gear means. The gear case is arranged adjacent to the inner surface of the bracket, the gear case is formed as a cylindrical body having an open upper surface, and the upper surface of the gear case is covered by a shelf plate.

[0011]

When the gear means of each bracket is rotated via the lifting drive, the gear means rolls on the rack means, and accordingly, each bracket is driven by each column in accordance with the direction of rotation of the gear means. Up and down along. In this case, the height position of the shelf placed on the bracket is continuously adjusted according to the amount of rotation of the gear means of each bracket. For this adjustment, it is not necessary to take down the shelf board and the articles placed thereon. Also, simply by removing the shelves,
Access to the gear case for servicing the lifting drive is made possible.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view partially showing a bracket 1 and a column 2 of a display shelf to which the present invention is applied, and FIG.
It is a perspective view of the whole display shelf to which the present invention is applied. As in the conventional example shown in FIG. 3, a pair of right and left columns 2 which form an overall L-shaped frame connected by an appropriate number of cross beams 20
Are each composed of one main column 3 and a guide rail 4 fixed to the main column 3 and having a substantially U-shaped cross section. The two guide rails 4 are arranged so as to face each other, and a plurality of rectangular slits 6 as rack means are vertically arranged on the leg piece 5 in front of each guide rail 4.

A bracket 1 for holding a shelf board made of a plate material having an appropriate thickness is provided on the shelf board 1 in the same manner as in the conventional example shown in FIG.
A horizontal upper edge 7 on which the mounting 9 is placed is formed.
According to the present invention, a pinion 8 as a gear means is rotatably supported on the bracket 1 via a horizontally disposed transmission shaft 9. The transmission shaft 9 connects the respective pinions 8 of the left and right brackets 1 in a driven manner.
Each pinion 8 is located in the attached guide rail 4 and meshes with a rectangular slit 6 as a rack means. The rear end of each bracket 1 is bent outward at a substantially right angle. With the bent portion 10, the bracket 1 comes into contact with the opposing surface 11 facing the slit 6 of the guide rail 4 having a U-shaped cross section. I have. The bent portion 10 is located below the pinion 8, and a low-friction slide member 12, preferably made of synthetic resin or the like, is attached to the bent portion 10 on the side facing the guide rail 4. I have. Therefore, in this case, the sliding member 12 forms a sliding surface of the bracket 1 that slides on the facing surface 11 of the guide rail 4.

The above configuration is completely symmetrical with respect to the left and right columns 2. However, one of the brackets 1 is provided with a lifting drive for driving the transmission shaft 9 and the pinion 8. The lifting drive includes a gear case 13 fixed to the inner surface of the bracket 1, a worm 14 supported in the gear case 13, and a worm gear 15 meshed with the worm 14. In this case, the worm 14 is a worm gear 15
, And the gear case 13 is formed as a cylindrical body having an open upper surface.

The worm shaft 16 acting as a drive shaft is
The bracket 1 extends near the upper edge 7 of the bracket 1 toward the front, and the vicinity of its tip is supported by a bearing 17 mounted on the inner surface of the bracket 1. This worm shaft 1
A crank handle 18 can be fitted to the distal end of 6, and thus the worm 14 can be rotated from the front side via the crank handle 18 and the worm shaft 16. The worm gear 15 meshing with the worm 14 is fixed to the transmission shaft 9 that passes through the gear case 13 and the bracket 1. Therefore, the turning torque given to the worm 14 can be finally transmitted simultaneously to the left and right pinions 8 via the worm gear 15 and the transmission shaft 9.

As shown in FIG. 2, the rear ends of the shelf board 19 placed on the bracket 1 are cut out in accordance with the outer shape of the guide rails 4 so that the shelf board 19 can be cut.
Are mounted on the bracket 1 and the gear case 13
And the transmission shaft 9 can be covered. According to such a configuration, not only the effective area of the shelf 19 on which articles can be placed is increased, but also the gear case 13 and the transmission shaft 9 are protected by the shelf 19, so that the articles may collapse due to load collapse. The gear case 13 and the transmission shaft 9 are prevented from being damaged. In addition, access to the worm 14 and the worm gear 15 in the gear case 13 for maintenance and inspection can be easily performed only by removing the shelf 19.

In order to adjust the height position of the shelf board 19 mounted on the bracket 1 by the above-described lifting device, the worm 14 is rotated from the front side via the crank handle 18 and the worm shaft 16. Good. That is, worm 14
Since the left and right pinions 8 rotate simultaneously in accordance with the amount of rotation of, the height position of the shelf 19 is adjusted steplessly by the pinions 8 rolling while engaging with the slits 6.

The weight of the article 1 placed on the shelf 19 and the weight of the bracket 1 generates a counterclockwise torque around the transmission shaft 9. This torque is supported by the slit 6 of the guide rail 4 and the opposing surface 11 via the pinion 8 and the slide member 12. Therefore, shelf 1
Even when the height position of the pinion 9 is adjusted, the engagement between the pinion 8 and the slit 6 of the guide rail 4 is reliably maintained.

In the embodiment shown in FIG. 1, the rectangular slits 6 as rack means arranged vertically in the guide rails 4 are provided on the conventional bracket 1 as shown in FIG.
It can also be used as a slit 105 for inserting the hook 107 of the 06. Therefore, in such a case,
It is also possible to combine the conventional shelf 108 that is adjusted stepwise and the shelf 19 that can be adjusted steplessly according to the present invention, and arrange them vertically in any direction.

[0021]

According to the present invention, the following effects are achieved.

A The height position of the bracket and the shelf can be adjusted arbitrarily and steplessly while the article is placed on the shelf.

B Since the lifting drive is located below the shelf, the effective area of the shelf on which articles can be placed can be increased.

(C) Since the upper surface of the gear case is covered by the shelf plate, the gear case is prevented from being damaged due to the collapse of the loaded article and the like, and dust is prevented from entering the gear case. .

D Access to the gear case for maintenance is easily performed by simply removing the shelf.

[0026]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a shelf plate lifting device according to the present invention.

FIG. 2 is a perspective view of the entire display shelf provided with the shelf lifting device according to the present invention;

FIG. 3 is a perspective view showing a conventional display shelf.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bracket 2 Prop 3 Main pillar 4 Guide rail 5 Front leg piece 6 Slit 7 Upper edge 8 Pinion 9 Power transmission shaft 10 Bending part 11 Opposing surface 12 Slide member 13 Gear case 14 Worm 15 Worm gear 16 Worm shaft 17 Bearing 18 Crank handle 19 shelf board 20 cross beam

Claims (2)

(57) [Scope of request for utility model registration] 1. Two pillars standing parallel to each other,
A lifting device such as a shelf plate comprising a rack means provided on each column in a vertical direction, and a bracket arranged to be able to move up and down along each column via gear means meshing with the rack means, The gear case of the lifting drive device for driving the means is disposed adjacent to the inner surface of the bracket, the gear case is formed as a cylindrical body having an open upper surface, and the upper surface of the gear case is covered by a shelf plate. Elevating device for shelves and other features. 2. The raising and lowering of a shelf board or the like according to claim 1, wherein a worm and a worm gear that rotate while meshing with each other are provided in the gear case. apparatus.