JPS621942Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an attachment structure for support legs that are foldably attached to the four corners of a top plate in a sectional table.

Conventionally, in a prefabricated table, one method of attaching supporting legs that are attached to the top plate at the four corners of the table so that they can be folded freely is to attach the supporting legs to the top plate via hinges so that they can be expanded and folded freely. A method has been attempted in which the expanded state is locked by screwing together the expanded state, but in this method, the locking screw is easily lost when the supporting legs are folded. There are some problems. That is, when folding a supporting leg that is in an expanded state, the folded state is obtained by removing the screw that locks the supporting leg in the deployed state and then folding the supporting leg.
The lock screws removed from the supporting legs in such a folded state must be stored separately from the table, and are often lost due to forgetting where they are stored over time.

The present invention is an attempt to improve the conventional situation in view of the above-mentioned circumstances, and the purpose of the present invention is to prevent the loss of the screws for locking the supporting legs in the unfolded state in a sectional table. The purpose is to make it possible.

That is, in the present invention, when the supporting legs are folded,
By providing the lock screw that is removed from the support leg so that it remains engaged without falling off the support leg, that is, by providing the lock screw so that it can be stored together with the support leg. The main feature of the present invention is to form a threaded part at the tip and a diameter smaller than the threaded part at the base. A locking screw is provided in the small diameter portion, a through hole for the locking screw is provided in the support bracket so that the screw portion can be inserted therethrough, and a through hole for the locking screw portion is provided in the top plate in correspondence with the through hole. While embedding the matching nut, a lock plate formed by making the insertion hole of the screw portion and the engagement hole of the small diameter portion communicate with each other is made so that the engagement hole is aligned with the through hole and the engagement hole is closed. When installing the plate with the small diameter part of the lock screw inserted through the plate, the plate should be fixed by aligning the opening position of the engaging hole and the through hole so that a part of the through hole is blocked by the engaging hole. It's because it's configured.

Hereinafter, specific embodiments of the present invention will be described with reference to the illustrative drawings. In the drawings, 1 is a top plate and 2 is a support leg, and the top plate 1 and support leg 2 are formed separately. The support leg 2 has a leg portion 2a and a support bracket 2b extending inwardly from the leg portion 2a, and is bent into an inverted L-shape, and the leg portion 2a has a flat portion with an appropriate width on its back. It is provided so as to widen toward the end in both width directions. That is, it is formed to have a trapezoidal cross-sectional shape, and its upper end has a gentle arc and is formed flush with the surface of the top plate 1. A suitable wood grain design 3 is applied to the back. Further, the support bracket 2b has a step of a certain size from the upper end of the leg 2a (the step is the thickness width of the top plate 1, more specifically, a notch recess 5 described later from the surface of the top plate 1).
The width is set to be the same as the thickness width up to the bottom. ) and extend inward. A through hole 4 for a lock screw 7, which will be described later, is opened in the support bracket 2b. More specifically, the through hole 4 is provided with a diameter slightly larger than the threaded portion 7a of the lock screw 7 so that the threaded portion 7a of the lock screw 7 can be inserted therethrough.

On the other hand, cutout recesses 5 are provided at the four corners of the top plate 1 on the back side in correspondence with the support brackets 2b. The notch recess 5 is the support bracket 2b.
It is provided so that it can be fitted. That is, it has the same shape and the same depth as the support bracket 2b, and is provided in the diagonal direction, and a nut 6 is inserted into the notch recess 5 in alignment with the through hole 4 opening on the side of the support bracket 2b. will be buried.

When the support bracket 2b is removably fitted into the notch recess 5 in this manner, the tip of the support bracket 2b faces oppositely to the tip of the support bracket 2b on the top plate 1 side. The parts are connected by hinges 8 such that they can be expanded and folded. Further, a lock plate 9 is fixed to the support bracket 2b in correspondence with the through hole 4, and an insertion hole 10 for a lock screw 7 and an engagement hole 11 for the lock screw 7, which will be described later, are mutually connected to each other in the plate 9. They are installed in communication. For more details, see insertion hole 10
has a diameter slightly larger than that of the threaded portion 7a of the lock screw 7, in other words, is provided with the same diameter as the through hole 4, and the engaging hole 11 is provided with the same diameter as the through hole 4. The hole has a diameter smaller than 10 mm and is provided in the shape of a long hole. More precisely, it is provided with a diameter smaller than that of the insertion hole 10 so that the small diameter portion 7b formed on the lock screw 7 can be inserted therethrough. The lock plate 9 is attached to the bracket 2b so that the engagement hole 11 is aligned with the through hole 4. That is, the engaging hole 11 is provided so that a part of the through hole 4 is closed.

On the other hand, the lock screw 7 has a threaded portion 7a at its tip and a small diameter portion 7b formed at its base to have a smaller diameter than the threaded portion 7a. The lock screw 7 has a small diameter portion 7b that can be inserted into an engagement hole 11 formed in the plate 9 and a through hole 4 opened in the support bracket 2b, and a screw portion 7a that can be inserted into the nut 6 embedded in the notch recess 5. It is provided so that it can be screwed together.

In addition, in the installation state as described above, the lock screw 7 is inserted into the insertion hole 10 opened in the lock plate 9 in advance.
This is achieved by inserting the lock plate 9 into the support bracket 2b with the small diameter portion 7b inserted into the engagement hole 11. Further, the insertion hole 10 opened in the plate 9 can be provided with a part thereof open at the end of the plate 9.

Next, its effect will be explained. FIG. 3 is a drawing showing a state in which the supporting leg 2 is locked to the top plate 1 in the unfolded state, and in this unfolded state, the locking screw 7 is
a is screwed into the nut 6. When folding the supporting leg 2 which is in the unfolded state as described above, the locking state is released by loosening the locking screw 7. By forming the engagement hole 11 with a larger diameter than that of the engagement hole 11, the screw portion 7a hits the plate 9 and prevents it from falling off, that is, the lock screw 7 can be prevented from coming off. It will be done. Then, with the lock screw 7 loosened like this, the support leg 2 is attached to the top plate 1.
The folding action can be obtained by rotating it toward the back surface of the holder.

The present invention is constructed as described above.
With the above configuration, the folding and unfolding states of the supporting leg can be obtained by a simple operation of rotating the supporting leg in a diagonal direction in addition to screwing the lock screw. I've reached it.

In particular, in the case of the present invention, a threaded portion is provided at the tip, and a small diameter portion is provided at the base of the threaded portion, and an engagement hole of the small diameter portion is provided in the support bracket. The small diameter part is provided with a diameter dimension that is approximately the same as that of the small diameter part, and the engagement hole is provided so as to close a through hole that opens on the support bracket side and has a diameter dimension slightly larger than that of the threaded part. When the lock screw is loosened for folding, the screw part is provided so that it can abut against the engagement hole formed with a smaller diameter than the screw part, thereby preventing the lock screw from falling off. As a result, it has become possible to effectively prevent the lock screw from being lost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the appearance of a table according to the present invention, FIG. 2 is an exploded perspective view of the main parts, and FIG. 3 is a sectional view of the same. 1...Top plate, 2...Support leg, 2a...Legs, 2b
...Support bracket, 3...Wood pattern, 4...Through hole, 5...Notch recess, 6...Nut, 7...
Lock screw, 7a...screw part, 7b...small diameter part,
8... Hinge, 9... Lock plate, 11... Engagement hole.

Claims (1)

[Scope of utility model registration request] In a prefabricated table, the support brackets of the support legs are formed into an inverted L shape, and the support brackets are pivoted diagonally through a hinge so that they can be folded and expanded at will. A lock screw is provided in the support bracket, with a threaded portion at the base and a small diameter portion formed to have a smaller diameter than the threaded portion at the base, and the support bracket has a through hole for the lock screw, and the threaded portion is inserted through the support bracket. A nut for screwing the screw portion is embedded in the top plate in correspondence with the through hole, and the insertion hole of the screw portion and the engagement hole of the small diameter portion are formed so as to communicate with each other. When the lock plate is installed with the engagement hole aligned with the through hole and the small diameter part of the lock screw inserted into the engagement hole, the lock plate is installed so that a part of the through hole is covered by the engagement hole. A mounting structure for a support leg in an assembly type table, in which the opening positions of the engagement hole and the through hole are aligned and fixed so as to close the engagement hole.