JPH0752017Y2 - Telescopic pallet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a telescopic pallet that is used to store a large number of conveyed articles such as packages and collectively convey them to a distribution center or the like.

[Conventional technology]

BACKGROUND ART Conventionally, wooden or metal pallets have been widely put into practical use for transporting a large number of items packed in cardboard boxes. Such a pallet is usually made up of grid-like bars attached between columns that are planted in the corners of the bottom plate.

Further, in such a pallet, a large size is being advanced today so that a large amount of the above-mentioned packaged goods can be stored and transported, and due to this large size, a bottom plate, a pillar and the like are also large in size. Higher strength is needed.

[Problems to be solved by the device]

However, such a conventional pallet has a problem that the pallet becomes large in size as described above, so that its carrying work and installation work are troublesome. Further, as the size of the pallet is increased, the space occupancy rate is always constant and large, which makes it difficult to secure the pallet installation space and the transportation space.

The present invention has been made in view of the above problems, and in the case of storing a large number of articles to be conveyed, even if the article is small in a contracted state, the entire shape is extended to store the article. An object of the present invention is to provide a telescopic pallet whose volume can be changed as desired.

[Means for Solving the Problems]

An expandable pallet according to the present invention has an outer column having a rectangular tube-shaped cross section that constitutes a frame for storing articles, and a plurality of substantially inverted L-shaped locking holes formed vertically on the peripheral surface of the column. Inside the outer pillar, which is movable between the outer pillar at a predetermined position in the longitudinal axis direction and has a cylindrical cross section, a fixing pin protruding on the outer periphery of the middle pillar, and the middle pillar. Of the spaces formed at the four corners, provided in a second space different from the first space that receives the fixing pin to define the predetermined position and the first space near the upper end in the outer column. With a stopper
A stopper pin provided so as to project into the second space by biasing a spring near the lower end of the middle column, and the middle column in the outer column is located in the first space. By projecting the fixing pin to the outside from the locking hole of the outer pillar, when restricting the movement of the middle pillar in the longitudinal axis direction, and by fixing the fixing pin from the locking hole to the first
The turning operation can be performed only when returning to the space.

[Action]

Since the middle pillar in this invention is vertically movable in a predetermined position in the outer pillar forming the frame of the pallet, when the amount of conveyed articles exceeds the storage area of the frame. Moreover, by raising the center pillar, the storage capacity can be increased by the amount of the rise. In this case, the locking mechanism between the outer pillar and the middle pillar rotates the middle pillar inserted into the outer pillar to lock the fixing pin located in the first space inside the outer pillar to the outer pillar. By protruding from the hole to the outside and fitting and locking the fixing pin in the locking hole, the center pillar can be held safely without falling due to its own weight.

Further, in order to change the locking position of the inner pillar again, the middle pillar is inverted and the fixing pin protruding outside from the locking hole of the outer pillar is returned to the first space in the outer pillar. This releases the restriction on the axial movement of the center pillar.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 and 2 are a front view and a side view showing the entire telescopic pallet according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a pillar bracket for outer pillars which is planted at four corners of a bottom plate 2, and the lower ends of the respective outer pillars 3 each having a rectangular tube shape can be detachably inserted into the support brackets 1. Inserted and supported. Reference numeral 4 denotes a lattice-shaped frame which is attached between the outer columns 3 and constitutes a lower frame A together with the outer columns 3. The frame 4 on the front side is composed of upper and lower two-stage frame members 4a and 4b. Hinge member 5 attached to the lower frame member 4b
On the other hand, the upper frame member 4a is pivotally supported so as to be freely rotatable, that is, foldable. Reference numeral 6 denotes a locking member provided on the upper end of the upper frame member 4a, which raises the frame member 4a,
The frame member 4a can be supported upright by fitting it to the outer column 3. Reference numeral 7 denotes an inverted L-shaped locking hole, which is provided so as to penetrate through the facing wall surface of each outer column 3 and is enlarged and shown in FIG. 6, and this is at a predetermined interval in the vertical direction of the outer column 3. A plurality of them are provided. Reference numeral 8 denotes a cylindrical middle pillar that is vertically movable at a predetermined position in each of the square pillar-shaped outer pillars 3. The middle pillar 8 is provided at a portion corresponding to the locking hole 7. A fixing pin 9 is attached so as to project to the outer periphery of 8. The fixing pin 9 has a protruding amount that is sufficiently accommodated in the inner wall of the outer column 3 and in the first space 10 on the diagonal line as shown in FIG. Therefore,
When the middle pillar 8 rotates and faces the opposing wall of the outer pillar 3,
As shown in the drawing, the amount of protrusion is such that the protrusion is in the locking hole 7 and protrudes to the outside of the outer column 3. Reference numeral 11 denotes a mounting bracket fitted to the upper end of each middle pillar 8, and a rod-shaped upper frame 12 is detachably suspended between the brackets 11. Also,
In FIG. 2, a U-shaped notch 13 is formed at the upper end of each support bracket 1, and a support pin 14 projecting from the outer periphery of the lower end of the outer column 3 is supported in this notch 13.

FIG. 5 shows a retaining mechanism arranged at the upper end of the outer column 3 and at the lower end of the middle column 8. In the figure, 15 is the above-mentioned first space in the corner portion of the inner wall surface of the upper end of the outer pillar 3.
A rod-shaped stopper fixedly installed in a second space (reference numeral is omitted) different from 10, a cylinder 16 provided substantially horizontally in the center pillar 8, and a spring 18 in the cylinder 16. The stopper pin is housed via the spring 18 and is urged by the spring 18 so that its tip comes into contact with the inner wall surface of the outer column 3. Then, the middle pillar 8 is rotated downward in the drawing by an angle of about 45 °, and the middle pillar 8 is rotated with respect to the outer pillar 3.
The stopper pin 17 comes into contact with the lower end surface of the stopper 15 when moving up, so that the middle column 8 does not come out of the outer column 3 further upward.

Next, the operation will be described.

First, when the amount of articles stored in the expandable pallet is small, the upper frame 12 suspended from the bracket 11 at the position shown in FIG. 1 is removed, and each center pillar 8 is rotated by an angle of 45 °. It is operated so that the fixing pin 9 is located in the space 10 of the outer column 3. For this reason, the fixing pin 3 is allowed to move up and down in the space 10, so that the middle pillar 8 descends in the outer pillar 3 by its own weight and reaches the lowest position. In other words, this middle pillar 8
In the lowest state, the articles are stored in the frame 4.

On the other hand, when there are a large number of articles to be stored and the storage area of the frame 4 is exceeded, as shown in FIG. 3, the fixing pin 9 is directed to the first space 10 and the center pillar 8 is moved upward. When pushed up, the middle pillar 8 rises inside the outer pillar 3. In this way, when the inner pillar 8 is lifted up from the outer pillar 3 by a predetermined amount, that is, at a height corresponding to the amount of articles to be housed, each fixing pin 9 is positioned at a portion where each locking hole 7 is present. In this state, the chain line is shown in Fig. 6.
Shown at 9a. Next, in this state, the central pillar 8 is manually rotated to
The fixing pin 9 is moved in the direction of arrow A toward the right edge along the horizontal portion of the locking hole 7 (chain line 9b). Subsequently, when the hand is released from the center pillar 8, the fixing pin 9 descends in the vertical portion of the locking hole 7 in the direction of the arrow B by its own weight, and its lowermost edge portion is shown by the solid line in FIG. Held in. That is,
The middle pillar 8 is held at a predetermined height extended from the outer pillar 3 and can accommodate a predetermined conveyed article up to this height.
At this time, the tip portion of the fixing pin 9 slightly projects outward from the outer surface of the outer column 3. When the inner pillar 8 is raised to the maximum extent, the fixing pin 9 at the lowermost end is placed on the U-shaped groove at the uppermost end of the outer pillar 3. Then, when the position of the center pillar 8 is determined, the upper frame 12 is attached between the brackets 11 at the upper ends thereof.

In addition, when such a telescopic pallet is not used,
The rod-shaped upper frame 12 is removed from the bracket 11, the middle column 8 is removed from the outer column 3 as necessary, or the middle column 8 is housed in the outer column 3 to the lowest position. Subsequently, the outer column 3 is slightly lifted from the support bracket 1, the support pin 14 is made slightly free from the notch 13, and is laid inward toward the bottom plate 2 side as shown in FIG. By doing so, the telescopic pallet becomes thin as a whole, and it becomes easy to carry and store the pallet, and the handling becomes easy.

In this way, by moving the middle pillar 8 up and down with respect to the outer pillar 3, and fitting and locking the fixing pin in the locking hole 8 at a predetermined position of the lifting and lowering, the amount that exceeds the storage area surrounded by the outer pillar 3. The articles and the like can be stored in the area corresponding to the amount of elevation of the center pillar 8.

[Effect of device]

As described above, the telescopic pallet of the present invention has an outer pillar having a rectangular tubular cross section and a plurality of substantially inverted L-shaped locking holes on the side surface in the vertical direction, and a predetermined position in the outer pillar. An inner pillar that is inserted movably in the axial direction and has a fixing pin protruding on the outer periphery, and an inner pillar that has the fixing pin protruding are provided in the outer pillar so as to be movable in the longitudinal axis direction in the outer pillar. Provided in the first space and a second space in which the stopper and the stopper pin come, and the fixing pin located in the first space is engaged with the locking hole of the outer pillar by rotating the middle pillar. A configuration is adopted in which the inner column is locked to the outer column by projecting it further outward, and a configuration that prevents the middle column from being pulled out from the outer column during height adjustment. Therefore, it is possible to easily engage and disengage the middle pillar with respect to the outer pillar only by rotating the middle pillar.
The amount of movement in and out of the central pillar can be changed arbitrarily. This makes it possible to arbitrarily set the capacity of the pallet according to the amount of goods to be stored, eliminating the problem of carrying a small amount of goods on a large pallet, and the material by preparing a large pallet. This has the effect of solving the conventional problems such as increased costs, troublesome transportation work, and difficulty in securing installation space and delivery space.

[Brief description of drawings]

FIG. 1 is a front view showing a telescopic pallet according to the present invention,
FIG. 2 is a side view of the telescopic pallet shown in FIG. 1, and FIGS. 3 and 4 are transverse cross-sectional views of essential parts showing relative movements of the center pillar and the fixing pin with respect to the outer pillar of FIG. 1, and FIG. Is an enlarged cross-sectional view showing the retaining structure of the middle pillar with respect to the outer pillar, FIG. 6 is an explanatory view showing the relative operation between the locking groove of the outer pillar and the fixing pin of the middle pillar, and FIG. 7 is the outer pillar. It is a side view which shows the folded state. 3 ... Outer pillar, 4 ... Frame, 7 ... Locking hole, 8 ... Middle pillar, 9 ... Fixing pin, 10 ... Space.

Claims (1)

[Scope of utility model registration request] 1. An outer column having a rectangular tubular cross section forming a frame for storing articles and having a plurality of substantially inverted L-shaped locking holes formed in the vertical direction on its peripheral surface, and an inner column. Is formed at four corners in the outer column between the inner column, which is movable in the longitudinal direction at a predetermined position and has a cylindrical cross section, a fixing pin protruding on the outer periphery of the inner column, and the inner column. A first space that receives the fixing pin to define the predetermined position and a stopper that is provided in a second space different from the first space near the upper end in the outer column, A stopper pin provided so as to project into the second space by a spring bias near the lower end of the middle column, and the middle column in the outer column is located in the first space. By fixing the fixing pin to the outside through the locking hole of the outer column, When you restrict the movement of the direction, and,
A telescopic pallet, which can be rotated only when the fixing pin is returned from the locking hole into the first space.