JP3482586B2 - Top plate fixing device for folding table - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large number of tables when not in use by rotating and fixing a table top from a horizontal position to a substantially vertical position. TECHNICAL FIELD The present invention relates to a top plate fixing device for a folding table, which facilitates storage, transportation, and movement of a table. 2. Description of the Related Art Tables used for meetings and dinners are
When not in use, they are stacked and stored in a corner of a room or in a warehouse. However, they are cumbersome to stack and take out, are dangerous, and are difficult to transport and move. [0003] The table which solved this inconvenience is disclosed in
It is disclosed in JP-A-1-160728. [0004] However, the table described in the above-mentioned publication has a complicated mechanism such as a locking rod biased by a compression spring and a handle for operating the locking rod. Since the members are exposed to the outside, not only the aesthetic appearance is impaired, but also the user may come into contact with a handle provided immediately below both sides of the top plate. SUMMARY OF THE INVENTION It is an object of the present invention to provide a top plate fixing device for a folding table which has a simple structure, can be easily manufactured, has a good appearance, and does not cause harm to a user. I have. [0006] The present invention solves the above-mentioned problems as follows. The upper and lower ends of a support shaft fixed to the upper end of the pillar in the left-right direction, and pivotally supporting the top plate at both ends from a substantially horizontal position to a substantially vertical position. A pair of engaging recesses are provided, and immediately above the engaging recesses, made of an elastic material, facing in the front-back direction, the rear end is fixed to the lower surface of the top plate, the front portion is urged downward, and the front portion is On the lower surface of the top plate, at the time of horizontal and vertical top plate, provided with an engagement convex portion that is elastically engaged with any of the concave portions ,
A fixing plate having an arcuate curved portion that can be overlapped on the upper surface of the support shaft is provided at a front portion . FIG. 4 and FIG. 5 schematically show a table to which the present invention is applied. The table stands upright at the rear part of a horizontal leg (1) which expands in a V-shape toward the front. At the upper end of the pedestal (2), which is slightly inclined forward, a support shaft (3) facing in the left-right direction is fixed, and a top plate (4) is provided at both ends of the support shaft (3) and fixed to the lower surface thereof. It is attached via a top plate receiver (5) facing the front and rear direction of the wearing. As shown in FIGS. 1 to 3, a pair of centrally symmetrical engagement pins (6) and (6) are provided on the side end surface of the support shaft (3) so as to protrude laterally. (3) At the key points on the side edge,
At predetermined intervals, a pair of laterally facing engagement grooves (7) (7) are cut out. A screw hole formed in the center of the side end surface of the support shaft (3)
(8) has a pivot hole formed in the vertical piece (5a) of the top plate receiver (5).
The pivot bolt (10) inserted into (9) is screwed into the pivot hole (9).
The pivot (1) has a smooth peripheral surface at the base of the bolt (10).
0a), the top plate (4) is pivotably supported around the support shaft (3). A pair of arcuate engagement holes (11) and (11) surrounding the pivot hole (9) are formed at a position where the vertical piece (5a) overlaps with the support shaft (3). The engagement pin (6) is fitted into the engagement hole (11), and when the top plate (4) is horizontal, both engagement pins (6) are engaged with one end of both engagement holes (11). When the top plate 4 is vertical, the top plate 4 is also engaged with the other end. A rear end of a band-shaped fixing plate (12) made of an elastic material is fixed to the rear side of the lower surface of the top plate (4).
The front of is biased downward. This allows the fixing plate
A downwardly curved portion (12a) provided at the front of (12) normally presses against the upper surface of the support shaft (3) and faces the side provided at the lower surface of the central portion of the fixed plate (12). The engaging ridge (13) is engaged with the front engaging groove (7) when the top plate (6) is horizontal, and is engaged with the rear engaging groove (7) when the top plate (6) is vertical. is there. Bending part (1
At the front end of 2a), a forward-facing lever (12b) is provided. In the above-mentioned apparatus, when the top plate (4) is horizontal, the engaging pins (6) and (6) of the support shaft (3) and the front engaging groove (7).
Are engaged with one end of the engagement holes (11) and (11) of the top plate receiver (5) and the engagement ridge (13) of the fixed plate (12), respectively.
Is fixed so as not to rotate. In this state, if the fixing plate (12) is rotated slightly upward by the operation of the lever (12b) against the urging thereof, the engaging ridge (13) is moved forward. Since the top plate (4) is disengaged from the groove (7), the top plate (4) is turned in a vertical direction until the engagement pin (6) comes into contact with the other end of the engagement hole (11). Article (1
3) rotates downward with elasticity together with the fixing plate (12), engages with the rear engaging groove (7), and the top plate (4) is fixed vertically. By the same operation, the vertical top plate (4)
Can be fixed as horizontal. Also, lever (1
2b) After the operation of turning up, the vertical top plate
Since the reverse operation of rotating (4) downward is performed, the top plate does not suddenly rotate downward and a hand or the like is not pinched between the pillar and the top plate. The curved portion (12b) may be omitted from the fixed plate (12) to form a flat plate, and the engaging pin (6) and the engaging hole (11) may be used.
The rotation restricting device for the top plate (4) may be of another type. As shown in the drawing, the legs for supporting the table top are formed by horizontal legs expanding forward and pedestals erected at the rear thereof. The top plates of a large number of tables during use are fixed vertically, and the tables can be stacked back and forth so that they can be stored in a warehouse or an empty room without taking up space, and can be easily transported and moved. Further, the top plate can be fixed in a horizontal posture and a vertical posture by a simple operation of the handle pointing forward, which is convenient. Since the members of the fixing device are provided directly below the top plate and are not exposed to the outside, the appearance of the table is not impaired, and the structure can be made simple and inexpensive. Further, since the curved portion of the fixed plate always holds the support shaft, even when the table is used or transported, even if the top plate receives a strong impact, the engaging ridges come off from the engaging grooves. There is no danger that the top board will rotate unnecessarily.

[Brief description of the drawings] FIG. 1 is an exploded perspective view of the device of the present invention. FIG. 2 is a vertical sectional front view of the same. FIG. 3 is a vertical sectional side view taken along line III-III in FIG. 2; FIG. 4 is a plan view of a table to which the present invention is applied. FIG. 5 is a side view of the same. [Explanation of symbols] (1) Horizontal leg (2) Pillar (3) Support shaft (4) Top plate (5) Top plate support (5a) Vertical piece (6) Engagement pin (7) Engagement groove (8) Screw hole (9) pivot hole (10) Bolt (10a) pivot (11) Engagement hole (12) Fixed plate (12a) Curved section (12b) Handle (13) Engagement ridge

Claims (1)

(57) [Claims 1] A top plate is fixed to the upper end of a pillar in the left-right direction, and a top plate is pivotally supported at both ends from a substantially horizontal posture to a substantially vertical posture. A pair of front and rear engagement recesses is provided at key points on the peripheral surface of the end of the support shaft, and is made of an elastic material immediately above the engagement recesses, faces in the front-rear direction, and the rear end is fixed to the lower surface of the top plate. And the front part is urged downward, and on the lower surface of the front part,
At the time of top plate horizontally and vertically, with the engaging convex portion so as to resiliently engage one of the recesses, further front the supporting
A top plate fixing device for a folding table, wherein a fixing plate having an arcuate curved portion capable of being overlapped is provided on an upper surface of a shaft .