JPS6132785Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to protective legs for box-shaped containers with an open top that are used primarily on tables and desks, such as letter cases and document organizing boxes. In line with the original purpose of the protective screen to protect surfaces such as desks and prevent slipping, it is usually placed entirely under the bottom surface of the bottom plate of the container, and when containers are stacked on top of each other, the legs are rotated 90 degrees intermittently to protect the bottom surface. To provide a protective leg which can prevent stacked containers from slipping down by aligning engagement grooves provided in the bottom plate parallel to the edge of the bottom plate and engaging the opening edges of containers located below. .

Office box-shaped containers such as letter cases that are placed on desks are generally made of metal plates or synthetic resin, so they are used to protect the desk top and prevent slippage. To prevent this, protective legs made of rubber or soft synthetic resin are often installed. However, since the purpose of this type of conventional protective leg is only for the above-mentioned purpose, it is of no use at all when containers are stacked on top of each other, and often becomes a hindrance.

In view of the protective leg attached to the bottom surface of the container, the present invention not only provides the original function but also adds a locking function to the protective leg so that the protective leg can be moved downward by stacking containers on top of each other. It is an object of the present invention to provide a protective leg for a box-shaped container which is improved so as to be engaged with the opening edge of the container so that a plurality of containers can be stacked in a stable state.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments. Reference numeral 1 is a leg member serving as a protective leg, and 2 is a metal box-shaped container with an open top, such as a letter case, to which the leg member is attached.

As shown in the figure, the leg member 1 includes a leg main body 1a in the form of a rectangular block whose horizontal length is about 1.5 times the vertical length in this embodiment, and a leg main body 1a that is erected on the upper surface of this leg main body. Fitting shaft portion 1 with locking head 1b
c and an engagement groove 1d formed linearly across the lower surface of the main body of the leg, and the whole is integrally molded from an elastic material such as rubber. The fitting shaft portion 1c extending on the upper surface of the block-shaped leg main body is located at the center in the vertical direction, and is at a position offset to the left in the horizontal direction where the length is longer than that. , and is erected at a position where the upper and lower edges and the left edge are equal.

This fitting shaft part 1c is fitted into a fitting hole formed in the bottom plate of the container 2, as will be described later, and is for fixing the leg member 1 to the lower surface thereof. The cross section is formed into a square. A locking head 1b larger in diameter than the shaft body is provided at its upper end.

On the other hand, the engagement groove 1d formed on the lower surface of the main body of the leg is located at a position away from the center line of the fitting shaft part 1c, more specifically, from the extension line of the center line of the fitting shaft part 1c to the right side and the left edge. They are formed along the vertical direction at a distance approximately equal to the distance from the top to the top.

This engagement groove 1d is for receiving and engaging the edge of the opening of the container 2, and is formed linearly and with sufficient depth and width to receive the edge of the opening.

On the other hand, with respect to the leg member 1 configured as described above, the bottom plate 3 of the container 2 is provided with an insertion hole 4 for mounting the leg member.

The container in this embodiment is formed into a box shape with a perforated plate having square through holes lined up over the entire surface, and the through holes are used as inset through holes 4 for attaching the leg members.
This fitting through hole 4 is connected to the fitting shaft portion 1.
It is made into a square shape that matches the cross-sectional shape of c and continues along the edge of the bottom plate 3.

For the container thus formed, the leg member 1 is attached to the underside of the bottom plate by forcibly inserting it into the through-hole 4 opened in the bottom plate 3 while bending and reducing the diameter of the locking head provided at the upper end of the fitting shaft portion 1c by utilizing the elasticity of the material.
However, when used according to the purpose of this invention, the mounting holes are selected to be close to the edge of the bottom plate 3 and are mounted in a number of fitting holes spaced at appropriate intervals.

In the leg member mounted in this way, the cross section of the fitting shaft portion 1c and the shape of the fitting through hole 4 match, so that
At the same time as the leg member is attached to the through hole, the sides coincide with each other, and while the leg member is attached in a stable state, the direction of the leg member is automatically determined.

Therefore, if the insertion hole 4 formed in the bottom plate 3 of the container is opened at a distance equal to the distance between the insertion shaft 1c of the leg member 1 and the edge of the upper surface from the edge of the bottom plate 3, the leg By aligning the length of the leg main body 1a with the edge of the bottom plate, the entire part will be hidden behind the bottom surface of the bottom plate 3 as shown by the dashed line in FIG. When the attached leg main body 1a is rotated with a finger, the fitting shaft portion 1c rotates while deforming inside the fitting through hole 4, and each of the matching sides moves to each side adjacent to the through hole and matches again. Therefore, by intermittent rotation of 90 degrees, the engagement groove 1d provided on the lower surface of the leg main body is aligned with the edge of the bottom plate 3, as shown by the solid line in FIG.

Figure 6 specifically shows the above situation.
First, the leg member 1 attached to the lower container 2 is made parallel to the edge of the bottom plate 3 so that its entire length is hidden, and the leg member attached to the upper container 2 is further rotated by 90 degrees to reveal its underside. This figure shows a state in which an engagement groove 1d provided in the bottom plate is parallel to the edge of the bottom plate, and the opening edge of the lower container is fitted into and engaged with the engagement groove 1d.

As shown here, the protective legs of the present invention are completely hidden under the bottom plate of the container, and as with conventional protective legs, they perform their original function without spoiling the appearance or increasing the area of the container. By rotating the engagement groove 1c provided on the lower surface of the leg main body in parallel with the edge of the bottom plate, it can be engaged with the opening edge of another container, so that containers can be stacked on top of each other. It becomes possible. Moreover, in this case, the leg members also have the function of protective legs, which prevents the upper and lower containers from coming into contact with each other, thereby preventing abnormal noises caused by mutual contact between the containers, and also effectively protecting the painted surface. .

Furthermore, while the protective leg of the present invention is attached to the container by pushing the insertion shaft, it cannot be rotated arbitrarily because the shapes of the insertion shaft and the insertion hole are always square and the same. Therefore, there is an advantage that it can be used conveniently without having to adjust the orientation of the container each time it is carried.

In the above embodiment, the main body of the leg is shaped like a rectangular block, but the shape is not limited to this.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
The figures are a front view of the leg member as a protective leg according to the present invention, Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is a slope view, and Fig. 5 is a bottom view of the leg member attached to the lower surface of the container. FIG. 6 is a vertical sectional view showing an example of use in which containers are stacked one on top of the other. 1 is a leg member serving as a protective leg, 1a is a leg main body, 1b is a locking head, 1c is a fitting shaft, 1d is an engaging groove, 2 is a container, 3 is a bottom plate, and 4 is a fitting through hole.

Claims (1)

[Scope of utility model registration request] A fitting shaft portion having a square cross section and a flange-shaped locking head is erected on the upper surface of the main body of the block-shaped leg, and a linear engaging groove is provided on the lower surface of the main body, avoiding the center line of the fitting shaft portion. The provided leg members are integrally formed of an elastic material such as rubber, and the bottom plate of the box-shaped container, which is open at the top, has square fittings that match the cross-sectional shape of the fitting shaft at appropriate positions along both side edges. A plurality of holes are formed, and the fitting shaft portion is removably inserted into these fitting through holes so that the leg member is always attached so as to be hidden under the bottom surface of the bottom plate of the container, and when stacking containers on each other, the leg member is the main body. For box-shaped containers such as letter cases, the engagement groove is aligned parallel to the edge of the bottom plate and can be engaged with the opening edge of the container located below by intermittent rotation of 90 degrees of the insertion shaft. Protective legs.