JPS5811215Y2 - Folding desk with shelf - Google Patents

Description

[Detailed description of the invention] In this invention, a locking rod a, which is always biased to protrude to the side of the support leg, is fitted into the support leg A so that it can move forward and backward freely, and the locking rod a is attached to the upper end of the support leg A so that it can be freely raised and lowered. The upper ends of the upper connecting rods 2 are pivotally connected 3 to the attached top plate B, and the locking holes 4 in which the locking rods A are to be engaged and released are respectively attached.
The actuating piece 5 attached to the lower end of the lower connecting rod 4 and the tip of the shelf C is connected to the column A via the pivot 6.
The upper connecting rod 2 and the lower connecting rod 4 are pivotally connected to the upper connecting rod 2 and the lower connecting rod 4, and the operating piece 5 collides with the lower connecting rod 4 when the shelf C is folded and unfolded, and the circumferential connecting rod 4 A claw piece 8 is provided for rotating the lower link in the folding direction and the unfolding direction, and the upper end of the closing arm piece 9 of the locking hole 4a of the lower link 4 is pivotally supported on the pivot 6. , the claw piece 10 that should collide with the arm piece 9
This invention relates to a folding table with a shelf, which is characterized by being provided with a
The purpose is to provide an improved folding desk with a shelf that has a simple structure, can be easily folded and unfolded, and can be easily unlocked and locked.

In the figure, reference numeral 11 denotes a support metal fitting attached to the upper end of the support leg A, and a top plate B is pivotally attached to the tip of the support metal fitting.

12 is a horizontal support member joined to the lower end of the supporting leg A, and 13 is a caster mounted on the member 12.

Further, a horizontal beam (not shown) is connected between a pair of supporting legs A disposed on both sides of the top plate B.

Furthermore, an ammunition 1 is provided between the collar piece 14 of the locking rod a and the supporting leg A.
5 is interposed, and the locking rod a is always urged to protrude to the side of the support leg A by the repulsive force of the ammunition 15.

Since the folding table of the present invention is constructed as described above, in the unfolded state shown in FIG.
and each locking hole 4a, 5a of the actuating piece 5 attached to the shelf C
, the shelf C and the lower connecting rod 4 are locked in the deployed position,
There is no risk that the desk will accidentally perform a folding operation.

At this time, the closing piece 9 is held in a position rotated upward about the pivot shaft 6 by the locking rod a, and the closing piece 9 is held in a position rotated upwardly about the pivot shaft 6, so that the closing piece 9 is held in a position rotated upwardly about the pivot shaft 6.
a, 5a are not occluded.

When folding the table from this state, first pull the locking rod a and move it back to release the locking holes 4a and 5a, then the arm piece 9 for closing the locking hole It rotates downward around the pivot 6 due to its own weight, and closes the locking holes 4 a and 5 a as shown in FIG. 3 .

Therefore, when the tensile force of the locking rod a is released, the unlocking rod a moves forward due to the urging force of the bullet 15, and its tip reaches the arm piece 9.
The locking hole 4a collides with the locking hole 4a and is prevented from moving further.
5a will not be inserted.

When the shelf C is rotated upward from this state around the pivot portion 6 relative to the support leg A, the actuating piece 5 also rotates in the same direction, as shown in FIG. The lower part 8a of the provided claw piece 8 collides with the upper edge of the lower part of the lower connecting rod 4 below the pivoting part 6, causing the connecting rod 4 to rotate upward about the pivoting part 6, and to move the connecting rod 4 up and down. The connecting rods 2 and 4 are bent into a dogleg shape around the pivot portion 7, and the top plate B begins to rotate downward around the pivot portion 1 relative to the support leg A, and then continues to rotate due to its own weight. As shown in FIG. 6, the top plate B and the shelf C are folded along the supporting legs A.

As described above, when the lower connecting rod 4 rotates upward about the pivot portion 6 as the shelf C rotates upward, the claw piece 10 of the connecting rod 4 engages the closing arm piece. Since the locking piece a collides with the arm piece 9 and rotates the same arm piece 9 upward, the forward movement of the locking piece a is no longer inhibited by the arm piece 9.

At this time, the arm piece 9 is supported by the advanced locking rod a and is prevented from rotating downward.

When the lower connecting rod 4 continues its upward rotation, the locking hole 4a of the lower connecting rod 4 has already passed the engagement position with the locking rod a, so the lower connecting rod 4 It rotates while sliding on the end surface of the locking rod a.

Next, when unfolding the desk according to the present invention from the folded state, when the top plate B is rotated upward from the state shown in FIG. The lower part 8a of the claw piece 8 of No. 5 is pushed up and the shelf C is rotated downward about the pivot 6. After that, the shelf C continues to rotate downward by its own weight, and the upper part 8b of the claw piece 8 It collides with the upper edge of the upper part of the rod 4 above the pivot 6 and pushes down the connecting rod 4, so that both the upper and lower connecting rods 2 and 4 are automatically positioned in a straight line, and the top plate B becomes light. It is something that will be developed.

At this time, the upper edge of the lower connecting rod 4 collides with the flange 2a provided on the upper edge of the upper connecting rod 2, so that the connecting rods 2 and 4 will no longer perform relative rotational movement. .

In the unfolded position of the desk according to the present invention, the upper part 8b of the claw piece 8 presses down the upper edge of the lower connecting rod 4, so that both the upper and lower connecting rods 2,
This prevents the top plate B from bending in the dogleg shape of 4.
is stably supported by the supporting legs A, and the shelf C is also held in the unfolded position.

Further, when the table is folded, the lower connecting rod 4 and the operating piece 5 are moved downward while the closing piece 9 is held in the upwardly rotated position by the locking rod a as described above. When the table rotates and assumes the unfolded position shown in FIG. This locks the desk in the expanded position.

In this way, according to the present invention, when folding, the locking rod a is moved back to release the lock on the actuating piece 5 and the lower connecting rod 4, and then the shelf C is lifted up, and the folding table with the shelf becomes light. Moreover, it can be folded into a small volume, and when unfolding, the folding table with shelves can be easily unfolded by simply lifting the top plate B, and it is automatically locked in the unfolded position. Lower connecting rod 4,
The operating piece 5 and the closing arm piece 9 are attached to the supporting leg A by a common pivot 6.
The present invention has many advantages, such as a simple structure because the structure is pivoted to the main body.

[Brief explanation of drawings]

Figure 1 is a side view showing the unfolded state of the folding desk according to the present invention;
Fig. 2 is a longitudinal sectional view of the main part, Fig. 3 is a side view showing the locking rod moved to the unlocked position, Fig. 4 is a longitudinal sectional view thereof, and Figs. 5 and 6 are respectively FIG. 3 is a side view of a main part of the desk showing the folded state before the folding process. A... Support leg, B... Top plate, C...
...Shelf, a...Lock rod, 1, 3, 6.7...
... Pivot joint, 2 ... Upper link, 4 ...
・Lower connecting rod, 4a...Lock hole, 5...
Actuation piece, 5a...Lock hole, 8...Claw piece, 9...Closing piece, 10...Claw piece.

Claims (1)

[Scope of utility model registration request] A locking rod A, which is always biased to protrude laterally, is fitted into the supporting leg A so that it can move forward and backward, and the top plate B, which is pivotally attached to the upper end of the supporting leg A so as to be able to rise and fall freely, is attached to the top plate A. The upper end of the connecting rod 2 is pivotally connected 3, and the locking hole 4a to which the locking rod a is to be engaged and released, respectively.
The operating piece 5 attached to the lower end of the lower connecting rod 4 and the tip of the shelf C is pivotally connected to the support column A via the pivot 6, and the upper connecting rod 2 and the lower connecting rod 4 are pivoted. At the same time, the operating piece 5 is provided with a claw piece 8 that collides with the lower connecting rod 4 and rotates the lower connecting rod 4 in the folding direction and the unfolding direction when the shelf C is folded and unfolded, The upper end of the closing arm piece 9 of the locking hole 4a of the lower connecting rod 4 is pivotally supported on the pivot 6, and the lower connecting rod 4 is provided with a claw piece 10 that is to come into contact with the arm piece 9. A folding desk with a shelf that is characterized by the following features: