JP2887646B2 - Folding table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding table.

[0002]

2. Description of the Related Art Conventionally, for example, a device according to Japanese Utility Model Publication No. 59-38895 is known, and a locking mechanism and an elastic body are provided between a top plate and a pedestal so as to moderate the rotation of the top plate. However, this has the disadvantage that the resistance is different between the initial stage and the final stage of rotation, and the initial stage suddenly rotates, but does not rotate unless a force is applied at the end stage. there were.

[0003] In addition, in order to brake the top plate, which has begun to rotate rapidly in the early stage, at the end, a strong ammunition is required. If the ammunition is too strong, a strong force is required, and the rotation of the top plate is required. The operation did not go smoothly.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a device which can eliminate such disadvantages and can always smoothly rotate the top plate.

[0005]

According to the present invention, a vertical portion, an inclined portion, and a vertical portion are formed on a crank plate having an upper end pivotally mounted on a protrusion provided on a side portion of a frame to which a top plate is fixed. A crank-shaped groove is provided, and a part of the frame is pivotally attached to one end of a mounting plate interposed between the pillar and the other end of the mounting plate. A pin is inserted into the slot, a vertical portion of a hook lever is fixed to a base end of a protruding tube pivotally attached to a side surface of the frame, and a hook-shaped concave groove provided in the vertical portion of the hook lever is inserted into the pin. The upper end of the crank lever spring whose lower end is locked to a part of the hook lever engages with the protruding pipe and is fixed to a part of the frame. the then secured to a part of the frame by winding the upper end portion of the crank power spring which engages the rear side of the crank plate to the projections Is shall.

[0006]

[Function] To fold the top plate from the fixed horizontal state to the vertical state, first, the horizontal portion of the hook lever below the top plate is pushed upward. Then, concave grooves of the vertical portion of the hook lever is disengaged from the lower pins are engaged.

[0007] Thus, since the frame supporting the top plate is to be released from the fixed state of the horizontal lower end direction from the upper end of the crank-shaped slot of the crank plate into which pin is inserted To move to.

Namely, since when the position of the pin in the crank shape slot moves from the point A of the top end to an intermediate point B is the vertical movement <br/>, but moves smoothly, then the intermediate from point B When moving to the point C, it passes through the inclined portion of the slot, so that the speed is suppressed, and further, from the point C to the lowermost D
When moving to the point, it is a vertical descent , but the load on the locking crank firing is increased, so that the speed is further suppressed. (See Fig. 6)

As a result, the folding of the top plate is in a buffer state.
To be performed slowly and quietly
You.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a top plate, and a frame 2 is fixedly installed at an appropriate position on the lower side of the top plate.

Reference numeral 3 denotes a pillar which stands on the frame 2 via a mounting plate 4, and is a tubular body having an elliptical cross section.

The frame 2 is attached to one end of the mounting plate 4.
Is pivotally connected to the shaft 5.

Reference numeral 6 denotes a crank plate whose upper end is pivotally connected to a projection 7 provided on the side surface of the frame 2. A crank-shaped slot 8 is formed in the crank plate.

Reference numeral 9 denotes a pin fixed to and protruded from the other end of the mounting plate 4. This pin is inserted into the crank- shaped slot 8, and the point A of this slot 8 → point B → point C → It moves to the point D (see FIG. 6) .

Reference numeral 10 denotes a projecting tube pivotally attached to the side surface of the frame 2, and a vertical portion 12 of a hook lever 11 is fixed to a base end of the projecting tube. The horizontal portion of the hook lever 11 is located near the outer end of the top plate 1.

Reference numeral 13 denotes a vertical portion 12 of the hook lever 11.
The concave groove portion is engaged with and disengaged from the lower side of the pin 9.

Numeral 14 denotes a hook lever strut whose lower end is locked to a part of the hook lever 11 and whose upper part is detoured around the projecting tube 10 and fastened to a part of the frame 2 at the upper end 16.

Reference numeral 17 denotes a crank spring whose lower end is locked at a proper position on the rear side of the crank plate 3 and whose upper end is wound around the projection 7 and fastened 19 to an upper end of a part of the frame 2. .

[0019]

According to the present invention, the rotation of the top plate is not adjusted by the strength of the two struts (the hook lever struts and the crank struts) respectively entangled on the hook lever and the crank plate, but the crank-shaped slot is formed. Means for moving the pin inserted into the top plate, a one-cushion is inserted in the middle portion where the top plate rotates, and braking is performed, whereby the top plate can be safely and smoothly folded. It becomes like that.

Therefore, there is no danger of fingers being pinched as in the case of the conventional means when the top plate is folded, and the handling can always be carried out with peace of mind.

[Brief description of the drawings]

FIG. 1 is a lower perspective view of a main part when a top plate is horizontal.

FIG. 2 is a front view of a main part when the top plate is horizontal.

FIG. 3 is a front view of a main part during folding of a top plate by unlocking.

FIG. 4 is a front view of a main part when the top plate is folded.

FIG. 5 is a plan view of a main part when the top plate is horizontal.

FIG. 6 is a front view showing an operation state of a main part.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Top plate 2 Frame 3 Leg pillar 4 Mounting plate 5 Axis 6 Crank plate 7 Projection 8 Crank-shaped slot 9 Pin 10 Protrusion tube 11 Hook lever 13 Hook-shaped concave groove 14 Hook lever firing 17 Crank firing

Claims (1)

(57) [Claims] 1. A side surface of a frame to which a top plate is fixed.
Vertical portion to the crank plate pivotally attached to upper ends projections, inclined portion
And a crank-shaped slot formed by forming a vertical portion ,
A part of the frame is pivotally attached to one end of a mounting plate interposed between the pillars, and a pin fixed to the other end of the mounting plate is inserted through the slot, and a side surface of the frame is formed. fixing a vertical portion of the hook lever to the proximal end of突管that pivotally connected to, a hook hand-shaped groove provided in the vertical portion of the hook lever so as to disengage the lower side of the pin, the lower end The upper end of the crank lever sprung on a part of the hook lever engages with the protruding pipe.
And secured to a portion of the frame by turning the upper end portion of the crank power spring to the lower end engaged with the rear side of the crank plate
A folding table that is wound around a spike and fastened to a part of the frame.