JPH0335156Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention provides an auxiliary plate that can be folded and unfolded freely on the side of the main body of desks, etc., and the auxiliary plate is expanded horizontally. Or it relates to a device that facilitates the folding operation by folding down 90 degrees and prevents involuntary folding.

(Prior art) Conventional desks have an auxiliary plate that protrudes or folds on the side, and the auxiliary plate is pivotally supported on the main body of the desk using a hinge or the like, and the auxiliary plate is attached to the vertical side of the main body. It is equipped with a pair of sleeve plates that support the bottom surface of the auxiliary board with the top edge when it is opened and opened.When installing a desk etc. on a wall, etc., with the auxiliary board protruding, the pair of sleeve boards are installed. Since there are drawbacks such as difficulty in opening and closing the sleeve plates, there is a desire for an auxiliary plate folding device that eliminates the need to open and close the sleeve plates.

(Problems to be solved by the invention) In view of the above, the present invention attempts to develop a simple device that can horizontally unfold and fold the auxiliary plate without using sleeve plates or the like. .

(Means for Solving the Problems) The purpose of the present invention is to specifically develop the device described in the previous section. A pair of first metal fittings 3 are provided to protrude, and the shaft 5 of the first metal fittings 3 allows the second metal fitting 6 that supports the auxiliary plate 14 to be tilted approximately 90 degrees.
is reversibly rotatably supported, and an engaging jaw 9 is provided on the inner side of the second metal fitting 6 below the shaft 5 at an angle where the auxiliary plate 14 is extended almost horizontally, and the engaging jaw 9 is provided on the first metal fitting 3
A vertical crank-shaped groove 10 is provided inside the groove 10, and a locking groove 11 inclined toward the opposite side of the engaging jaw 9 is formed at the lower end of the groove 10. The pin 12 is passed through the locking groove 11 so that it can freely move up and down when the auxiliary plate 14 is extended.
the pin into the locking groove 1 with the engaging jaw 9.
A device for folding an auxiliary plate for desks and the like, characterized in that when the auxiliary plate is folded, the pin 12 is moved and locked to the upper edge of a crank-shaped groove 10 by a locking jaw 9. When the auxiliary plate is unfolded by the engaging jaw provided on the second metal fitting, the pin that goes down in the crank-shaped groove to the locking groove is automatically pushed by the engaging jaw to hold it in an almost horizontal position, and when folded, The pin is pushed up and locked by the engaging jaws to the upper edge of the crank-shaped groove, thereby preventing unnecessary flapping.

A preferred embodiment of the invention will now be described.

(Example) In the present invention, the inner side is the side closer to the main body 1 when viewed from the second metal fitting.

FIG. 1 is a front vertical cross-sectional view of a main body 1 of a desk type with a top plate 2 attached, and a pair of first metal fittings 3, 3 shown in FIG. 3 are attached to the sides thereof. It is provided so that it protrudes from the side. Each first metal fitting 3, 3 is provided with a head 4, 4, and a shaft 5 of each head 4 is provided.
As shown in FIGS. 1 and 2, the head 7 of the second metal fitting 6 supporting the auxiliary plate 14 is freely pivoted for reversible rotation of about 90 degrees, and the auxiliary plate 14 is rotated as shown in FIG. The inner edge 8 of the second metal fitting 6 is vertical near the shaft 5 at an angle extending substantially horizontally, and a substantially vertical engagement jaw 9 recessed slightly outward is provided at the lower end of the inner edge 8.

As described above, the first metal fitting 3 is provided with a vertical crank-shaped groove 10 transparently inside the inner edge 8 and the engaging jaw 9 at an angle that makes the auxiliary plate 14 almost horizontal. The lower end of the groove 10 is bent toward the engaging jaw 9 and forms a locking groove 11 tilted toward the opposite side (inward) of the engaging jaw 9.

A long pin 12 shown in FIG. 3 is passed through the crank-shaped groove 10 of the pair of first metal fittings 3, 3 so as to be freely movable up and down, and is prevented from coming out by a snap spring 13.

(Function) In the present invention, as shown in FIG. 1, when the auxiliary plate 14 is unfolded almost horizontally, the second metal fitting 6 also becomes almost horizontal, and the engaging jaw 9 becomes almost vertical. On the other hand, the pin 12 falls below the crank-shaped groove 10 and enters the locking groove 11 due to its own weight, so push up the auxiliary plate 14 slightly in the direction of the arrow in FIG. 1 until the pin 12 falls into the locking groove 11. After the pin 12 falls into the locking groove 11 by itself or with manual assistance, it is pushed inward by the engaging jaws 9 by the weight of the auxiliary plate 14 and engaged as shown in the figure. Since the locking groove 11 is formed to be inclined inward from the engaging jaw 9, it cannot be moved upward, and the auxiliary plate 14
is held in an expanded state (Fig. 4).

When folding the auxiliary plate 14 as shown in FIG. 2, the pressure on the engaging jaws 9 is slightly loosened, and the pin 12 is manually pushed up above the locking groove 11. 2 When you rotate the metal fitting 6,
The pin 12 is pushed up to the upper end of the crank-shaped groove 10 by the engaging jaw 9, and at the same time is locked by the jaw 9 to prevent the second metal fitting 6 and the like from excessively rotating and flapping.

(Effects) The present invention has a pair of first
The second metal fitting 6 that supports the auxiliary plate 14 is supported by the metal fitting 3 and the shaft 5 of the first metal fitting 3 for free reversible rotation at an angle of about 90 degrees, and when the auxiliary plate is extended and deployed almost horizontally. An engaging jaw 9 provided on the inside of the lower part of the second metal fitting 6, a vertical crank-shaped groove 10 provided in the first metal fitting 3, and an opposite side of the engaging jaw 9 at the lower end of the crank-shaped groove 10. The auxiliary plate 14 can be expanded almost horizontally by the locking groove 11 provided at an angle to the side and the pin 12 that fits into the locking groove 11 or moves to the upper part of the crank-shaped groove 10, It has the effect of producing a folding action by bending and producing simple engagement.

[Brief explanation of drawings]

The attached drawings show examples of embodiments of the present invention.
FIG. 1 is a longitudinal sectional front view showing the auxiliary plate 14 in a substantially horizontally unfolded state, FIG. 2 is a longitudinal sectional front view showing the same when it is folded, and FIG.
2, FIG. 4, and FIG. 5 are explanatory views. 1 → main body, 3 → first metal fitting, 5 → shaft, 6 → second metal fitting, 9 → engaging jaw, 10 → crank shaped groove, 11 → locking groove, 12 → pin, 14 → auxiliary plate.

Claims (1)

[Scope of utility model registration request] A pair of first metal fittings 3 for supporting an auxiliary plate are protruded from the sides of a main body 1 of a desk type provided with a top plate 2,
A second metal fitting 6 that supports the auxiliary plate 14 is supported by the shaft 5 of the first metal fitting 3 so as to be reversibly rotatable through approximately 90 degrees.
An engaging jaw 9 is provided on the inner side below the shaft 5 of the second metal fitting 6 at an angle where the auxiliary plate 14 is extended almost horizontally, and a vertical clamp type is provided on the inside of the engaging jaw 9 on the first metal fitting 3. A groove 10 is provided, and a locking groove 11 inclined toward the opposite side of the engaging jaw 9 is formed at the lower end of the groove 10, and a pin 12 is formed in each crank-shaped groove 10 of the pair of first fittings 3.
is allowed to move freely up and down, and when the auxiliary plate 14 is extended, the pin 12 is lowered to the locking groove 11, and the pin 12 is pressed and locked inside the locking groove 11 by the engaging jaws 9.
A device for folding an auxiliary plate for desks or the like, characterized in that when the auxiliary plate 14 is folded, the pin 12 is moved and locked to the upper edge of a crank-shaped groove 10 by a locking jaw 9.