JPS6019610Y2 - Folding table locking device - Google Patents

Description

[Detailed description of the invention] This invention relates to a locking device for a folding table that is an improved table locking means.The purpose of this invention is to automatically lock the top plate by simply unfolding it to a horizontal position, and to release the lock. To provide a locking device for a folding table that can be easily and safely and efficiently performed.

A preferred embodiment of this invention will be described below with reference to the drawings.

In the folding type one-sleeved table shown in FIG. 1, the upper end of the pedestal 1, which is planted toward the rear of the pair of left and right pedestals 2 having casters 3, is as shown in FIG. A bracket bearing 4 whose tip end side projects in front of these is integrally formed.

At the tip of the bracket bearing 4, the base end side of a rectangular top plate support frame (hereinafter abbreviated as frame in the embodiment) 5 is pivoted so as to be vertically movable about a shaft P1.

Therefore, the frame 5 has a mounting configuration that allows it to be freely rotated between an unfolded position in which it is in a horizontal position at the upper end of the pedestal 1 and a folded position in which it is in a substantially vertical position along the front surface of the pedestal 1. .

A top plate 6 is integrally mounted on the frame 5 by screws or the like.

Further, at a lower and spaced apart position of the bracket bearing 4 on the pedestal 1, a base end of a shelf 7 is pivotally supported about a shaft P2 so as to be movable up and down.

The shelf 7 is always maintained parallel to the frame 5 by a ring member 8 which spans the distal end side of the shelf 7 and the frame 5 and pivots at both ends thereof.

Furthermore, a lock pin 9 for locking the frame 5 in the horizontally deployed position is provided between the bracket bearing 4 on the pedestal 1 and the base end pivot shaft P2 of the shelf 7.

As shown in more detail in FIGS. 4, 6, and 7, the lock pin 9 is formed as a tapered pin portion 9a that protrudes from the inner surface of the pillar 1 and has a gradually smaller diameter on the tip side, and is supported by a spring in the direction of protrusion. It is constantly energized at 1o.

On the other hand, lock receiving pieces 11 are integrally provided on both inner wall surfaces of the top plate support frame 5 and hang down along the inner surface of the pedestal 1 when the frame is in a horizontally deployed position.

The lock receiving piece 11 has a lock hole 12 into which the tapered pin portion 9a of the lock pin 9 is inserted when the frame 5 is in the horizontally deployed position.

The lock receiving piece 11 is bent so that the distal end 11a is gradually separated from the inner surface of the pillar 1 so as to push the lock pin 9 against the spring 10 when the frame 5 is expanded.

In this case, the distance 11 between the bent tip of the lock receiving piece 11 and the pedestal 1 is set to be larger than the protrusion length 12 of the lock pin 9 from the pedestal wall surface.

Therefore, when the distal end side 11a of the lock receiving piece 11 reaches the lock pin 9 when the frame 5 is expanded, the lock pin 9 is pushed as the distal end abuts against the curved surface of the distal end side 11a of the lock receiving piece 11. It moves backward against the spring 10.

Then, the lock hole 12 of the lock receiving piece 11 is connected to the lock pin 9.
When they match, the lock pin is advanced by the force of the spring 10 and fitted into the lock hole 12, whereby the frame 5, top plate 6, and shelf 7 are each held in a locked state in the horizontally deployed position.

When folding the table from such a state, it is necessary to release the above-mentioned lock.

For this purpose, lock release levers 13 are integrally connected to both ends of the proximal pivot shaft P2 of the shelf 7.

The lever 13 extends toward the lock pin 9 along the inner surfaces of the pillars 1 on both sides, and the pivot shaft P is attached to the extending end side of the lever 13.
An arcuate hole 14 centered at 2 is formed.

A tapered pin portion 9a of the lock pin 9 passes through this arcuate hole 14.

In this state, the lock receiving piece 11 is attached to the taper pin portion 9a.
Unless they abut, the proximal step wall 9b of the taper pin portion 9a
are adapted to press into engagement.

Further, the lever 13 has a bundle piece 15 integrally bent on the front end side.

The bundle piece 15 extends in a direction to intervene between the frame 5 and the pillar 1 when the table is folded.

Therefore, when the table is folded, the lever 13 is rotated when the bundle piece 15 is pushed toward the pillar 1 side by the frame 5.

In this lever 13, the arcuate hole 14 is connected to the bundle piece 1.
The side opposite to 5 is tapered so as to gradually approach the pedestal 1 side.

Therefore, when the front end hole on the side of the bundle piece 15 that is farthest from the wall surface of the pillar 1 is engaged with the lock pin 9, the arcuate hole 14 is formed so that the lock pin protrudes largely from the pillar 1. When held in the locking position and the rear end hole closest to the pedestal 1 is engaged with the lock pin 9, the lock pin is held in the unlocked position where the lock pin is moved backward against the spring 10. I will do it.

That is, when the table is folded, the lever 13 is
Since the bundle piece 15 is pressed, the lever 13 is displaced to a position where the front end hole of the arcuate hole 14 engages with the lock pin 9, and in this state, the lock pin protrudes to the locking position. .

Therefore, when the frame 5 is expanded from this state, the lock receiving piece 11 descends toward the lock pin 9, and the lock receiving piece 11 moves back against the spring 10 against the lock pin 9 on the way down. let

When the frame 5 is expanded to a horizontal position, the lock hole 12 of the lock receiving piece 11 matches the lock pin 9, so the pin 9 moves forward under the force of the spring 10 and fits into the lock hole 12. As a result, the frame 5 and the like are locked in the horizontally deployed position as described above.

When the bundle piece 15 of the lever 13 is pulled away from the pillar 1 from the locked state, the engagement position of the lock pin 9 with respect to the arcuate hole 14 becomes the arcuate hole 14 closest to the pillar 1.
By changing to the rear end hole side, lever 1 at this time
3, the lock pin 9 is moved back against the spring 10.

As a result, the lock pin 9 is removed from the lock hole 12, so that the frame 5 is unlocked.

By releasing the lock, the frame 5, top plate 6 and shelf 7
etc. become a co-moving body and are folded into a hanging position along the pedestal 1 under their own weight.

In the above description, the levers 13 are respectively connected to both ends of the base end pivot shaft P2 of the shelf 7.
are integrally connected by the pivot shaft P2, so when folding the table as described above, only one of the levers 1
There is an advantage that by simply operating the lever 3, the other lever can be operated in the same manner to simultaneously release the locks on both sides of the frame 5 on both side pillars 1, 1.

Further, the folding table having the above structure has a holding frame 16 for storing a folding chair mounted on the frame 5.

The holding frame 16 has pedestals 17 integrally connected to both ends thereof and extending in the same direction, and is rotatable about the pivot shaft P1 of the frame 5 with the tips of the legs serving as base ends of the holding frame. It has a mounting configuration that is pivoted to the

In this case, the holding frame 16 is attached within the frame 5.

Therefore, the holding frame 16 is rotatable between an unused position where it is stored within the frame of the frame 5 and a used position where it extends in a direction substantially perpendicular to the back surface of the top plate 6 when folded. There is.

On the other hand, the bracket bearings 4 at the upper ends of both side pillars 1 are provided with stoppers 18 for holding the holding frame 16 in the use position, that is, in the horizontal deployment position.

In addition, between the lower parts of the pillars 1 on both sides, there is a mounting frame 1 for a folding chair.
9 is integrally mounted horizontally.

The mounting frame 19 has a groove-shaped cross section, and is hung horizontally with its open end facing upward.

When the folding chair 20 is housed and held on the folded table, the holding frame 16 in the frame 5 is expanded horizontally and supported on the stopper 18.

In this state, the folded chair 20 is inserted from above between the back surface of the top plate 6 and the holding frame 16, and the lower end of the chair is held on the mounting frame 19.

As a result, the folding chair 20 and the folding table can be put away in a compact combined state when they are not in use.

In the above embodiment, the lock receiving piece 11 is integrally formed with a mounting piece 11b (see FIG. 5) at the base end, and the mounting piece 11 is fastened to the frame 5 with a bolt 21. .

For this reason, a bolt hole 11c is formed in the mounting piece 11b, and the bolt hole is formed to have a suitably larger diameter than the shaft diameter of the bolt 21.

Therefore, the position at which the mounting piece 11b is fastened by the bolt 21 can be changed as appropriate, and thereby the levelness of the top plate 6 at the unfolded position can be easily adjusted.

Further, as shown in FIGS. 8 to 10, the lock release lever 13 is connected to the pivot shaft P2 of the shelf 7 at the outer surface of the pillar 1.
It may be connected to

In this case, the lever 13 has an arcuate hole 14 fitted into the lock pin 9 so as to be slidable between the head 9b of the lock pin and the pedestal 1.

A handle piece 15 is integrally protruded from the center of the surface of the lever 13, and a bent piece 13' is integrally bent at one side edge, and the bent piece supports the top plate when folded. When the lever 13 is rotated by being pushed by the frame 5, the lock pin 9 is projected in the locking direction by the force of the spring.

Therefore, the lever 13 in this case also provides the same effects as in the previous embodiment.

As described above, in this invention, when the top plate is deployed, the lock receiving piece integrated with the top plate support frame is lowered and the lock pin enters the lock hole of the receiving piece by spring force, so that the top plate is automatically moved to the horizontally deployed position. can be locked to

In particular, in the locking device of the present invention, the locking release means, which can be easily and safely operated, is pushed by the top support frame when the table is folded, and the locking pin is projected and displaced to the locking position prepared for the next folding of the table. has great advantages.

[Brief explanation of drawings]

Fig. 1 is a front view showing a table according to a preferred embodiment of this invention in an unfolded state, Fig. 2 is a side view with a part cut away in the same state, and Fig. 3 is a partial front view of a table in a state in which a folding chair is held. Figure 4 is an enlarged configuration diagram of the same essential parts, Figure 5 is a sectional view taken along the line ■-V in Figure 4, Figure 6 is a sectional view taken along the line VI-VI in Figure 4, and Figure 7 is a sectional view taken along the line VI-VI in Figure 4. A sectional view taken along the line ■-■ in the figure, FIG. 8 is a side view of the main part of another embodiment of this invention, and FIG. 9 is an IX-IX in FIG. 8.
10 is a sectional view taken along the line X--X of FIG. 8. 1 is a pedestal, 5 is a top support frame, 7 is a shelf, P2 is a shelf support shaft, 9 is a lock pin, 10 is a spring, 11 is a lock receiving piece, 12 is a lock hole, and 13 is a lock release means. This is the lock release lever.

Claims (1)

[Scope of utility model registration request] a top plate support frame whose base end side is pivoted to the upper end of the pedestal;
A locking device that interlocks a shelf pivotally supported on the proximal side of the pedestal at the downwardly spaced position and locks and holds the shelf in a state where it is unfolded from a folded position along the pedestal to a horizontal position;
A lock pin is inserted between the base end pivot shafts of the top plate support frame and the shelf in the pedestal column and is biased by a spring force in a direction protruding from the inner and outer surfaces of the pedestal column, and the base end of the top plate support frame. A lock receiving piece is integrally hung near the side and is provided with a lock hole into which a lock pin is introduced at the unfolded position of the frame, and is integrally connected to the base end pivot shaft of the shelf and is slidably fitted into the lock pin. and a lock release means that is aligned and pushed by the frame when the top support frame is folded to cause the lock pin to protrude by a spring force, and the lock release means is operated to be displaced while the top support frame is in a locked state. By doing so,
A locking device for a folding table, characterized in that a locking pin is moved away from the locking hole against a spring force.