JPS6224092Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a coupling device for a column having an L-shaped cross section and used in a sectional shelf or the like.

[Conventional technology and its problems]

Conventionally, when connecting columns with an L-shaped cross section in a straight line, a joint body with an L-shaped cross section is attached to the inner surface of the connection part, and the side pieces of the joint body and the side plates of each column are bolted together. However, with this method, not only is it time-consuming to fasten the bolts, but the bolt heads protrude from the outside of the column, resulting in poor appearance, and the bolt heads get in the way, making it difficult for other parts to be attached. There was a problem with the product, such as becoming unable to use it.

The object of the present invention is to make it possible to connect L-shaped struts extremely simply and without causing problems such as deterioration of appearance.

[Means for solving problems]

In order to solve this problem, the present invention provides a device that connects two columns each having an L-shaped cross section in a straight line via a joint body that has an L-shaped cross section and is attached to the inner surface of the connecting portion of each column. , a locking body having a substantially U-shaped cross section, which surrounds and forms a locking hole that opens in the longitudinal direction of the support at a portion of the inner surface of the side plates that are orthogonal to each other in both the supports, and is spaced an appropriate distance from the connecting end surface. While forming a bulge, a tongue piece that can be freely inserted into the locking hole is formed by cutting grooves extending along the longitudinal direction of the column on both end edges of the mutually orthogonal side pieces of the joint body. , and a protrusion that can be freely engaged with and detached from the locking body is formed at the tip of each of the tongue pieces.

[Functions and effects of the idea]

With this configuration, the two columns are connected in a straight line by inserting the tongue piece of the joint body into the locking hole of each column and locking the protrusion at the tip of the tongue piece to the locking body. On the other hand, if the struts are pulled in opposite directions with a certain amount of force, they will be separated from each other.

In that case, since the tongue piece was formed by cutting a groove at the end of the joint body, a protruding piece with an L-shaped cross section would exist between the left and right tongue pieces.
When a bending force is applied to the connection part, the bending force acts in a distributed manner on the L-shaped protruding piece and the tongue piece, and the bending force does not concentrate and act only on the tongue piece. This means that deformation of the tongue piece in the connected state can be prevented or reduced.

Therefore, according to the present invention, since the supports can be connected and separated in a single touch, the labor of connecting and separating the L-shaped supports can be greatly reduced, and there is no need to tighten bolts or nuts. unnecessary,
Since no member is exposed on the outer surface of the support, it is possible to reliably prevent the appearance from deteriorating or from interfering with the attachment of other members.

In addition, by cutting grooves on both the upper and lower edges of the joint body to form the tongue pieces, it is possible to prevent the tongue pieces from deforming due to bending force acting on the connection part.
Although it can be connected with one touch, it also has the effect of maintaining high connection strength.

〔Example〕

Next, an embodiment of the present invention will be described based on the drawings. Reference numerals 1 and 1' denote metal supports each having an L-shaped cross section and having side plates 2 and 2' orthogonal to each other. ' are provided with locking holes 3, 3' for locking locking tools for supporting shelves etc.
1' are bored at a constant pitch along the longitudinal direction.

And each side plate 2 of the said support 1, 1',
2' has a U-shaped cross section formed by enclosing locking holes 4a, 4a' having a width h and penetrating in the vertical direction at a portion spaced apart by an appropriate dimension a from the connecting end surfaces of the struts 1, 1'. The locking bodies 4, 4' are provided in a protruding manner. The locking bodies 4, 4' are formed by forming vertically parallel cut lines on the side plates 2, 2' and bulging inward the portion between the cut lines.

Reference numeral 5 denotes a joint body having an L-shaped cross section and disposed between the inner surfaces of the side plates 2 and 2' of the columns 1 and 1'. A tongue piece 8 having a width h that can be freely inserted into the locking hole 4, 4' of the support column 1, 1' is formed by drilling a notch groove 7 extending along the longitudinal direction of the pillar. ing. Incidentally, at the tip of each tongue piece 7, there is an engaging protrusion 9 for preventing the tongue from coming off, which comes into contact with the end surface of the locking body 4, 4' when the tongue piece 7 is inserted into the locking hole 4a, 4a'. A bulge is formed.

In the above configuration, in order to connect both columns 1 and 1', a joint body 5 is inserted into the locking hole 4a' of the lower column 1'.
It is sufficient to insert and attach the tongue piece 8 at the lower end of the joint body 5, and then fit the locking hole 4a of the upper support column 1 into the upper tongue piece 8 of the joint body 5. ' are connected in a straight line with their side plates 2, 2' aligned on the same plane.

In this case, since the protrusion 9 bulged at the tip of the tongue piece 8 is engaged with the retaining bodies 4 and 4', the strut 1,
Even when the columns 1' are connected and then laid down sideways, the columns 1 and 1' do not come off unexpectedly, making it easy to handle the columns 1 and 1' after they are connected.

Furthermore, since the tongue pieces 8 are formed by forming the notch grooves 7 on both the upper and lower edges of the joint body 5, a protruding piece 10 having an L-shaped cross section is formed between the left and right tongue pieces 8. , the overlapping length of the joint body 5 and the struts 1, 1' increases and the connected posture becomes stable, and even when bending force is applied to the connection part,
Since the bending force acts on the L-shaped protruding piece 10 and the tongue piece, and the bending force does not act only on the tongue piece 8, the tongue piece 8 is not easily deformed in the connected state. This allows high connection strength to be maintained.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view, and FIG. 2 is a perspective view of the connected state. 1, 1'... Support column, 2, 2'... Side plate of support column,
4, 4'... Locking piece, 4a, 4a'... Locking hole, 5
...Joint body, 6...Side piece, 7...Notch groove, 8...
...tongue piece, 9...protrusion.

Claims (1)

[Scope of utility model registration request] In a device that connects two columns having an L-shaped cross section in a straight line via a joint body having an L-shaped cross section attached to the inner surface of the connecting portion of each of the columns, the side plates of the two columns that are perpendicular to each other A locking body having a substantially U-shaped cross section and surrounding a locking hole opened in the longitudinal direction of the column is formed on the inner surface at an appropriate distance from the connecting end surface, while A tongue piece that can be freely inserted into the locking hole is formed by cutting grooves extending along the longitudinal direction of the support in both end edges of both side pieces that are orthogonal to each other, and a tip end of each tongue piece is formed. 2. A support column joint device, characterized in that the locking body has a bulging protrusion that can be freely engaged and detached.