JPH06189824A - Table - Google Patents

Abstract

PURPOSE:To execute the flap operation of a top plate with a minimum operation, and to simplify a work by providing the top plate so as to be turnable to a utilization position and an erected holding position, interlocking a lock mechanism for locking in the utilization position between both supporting elements of the top plate, and providing an operating part for releasing the lock in a middle part of its interlocking lever. CONSTITUTION:Between each leg body 1 and the top plate, a locking mechanism 3 is provided, and the projecting end of the shaft 31 of the locking mechanism 3 is connected by a connecting lever 4. The middle part of the connecting lever 4 is deformed to a mountain shape so as to become eccentric, and it becomes an operating part 41. In such a state, in the case the top plate 2 is in a horizontal utilization position an, engaging pin 33 is engaged with the lug 32 of the locking mechanism 3, and the top plate 2 is locked. Subsequently, when the operating part 41 provided on the connecting lever 4 is drawn to this side, the lug 32 turns from the locking position to a lock releasing position and is separated from the engaging pin 33. Thus, the locking state is released, and the top plate 2 turns to an erected holding position (b) by the energizing force of a gas spring 18, and is engaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table having a so-called flap type top plate.

[0002]

2. Description of the Related Art Conventionally, as a table of this type, a top plate is hinged on a pair of left and right supporting elements to rotate the top plate between a horizontal use position and an upright standby position. Various types have been developed which are configured so as to be capable of being configured and which are respectively provided with lock mechanisms for locking the top plate at the use position or the standby position at the upper end portions of the both support elements.

[0003]

However, in the prior art, the operation lever for releasing the locked state of the lock mechanism provided on the support element side is provided on the outer surface of the upper end portion of one support element. There is. The operating force applied to the operating lever is transmitted to the lock mechanism provided on the other support element side via the interlocking rod so that both lock mechanisms can be operated in synchronization.

Therefore, when the lock mechanism is engaged and disengaged to rotate the top plate, it is necessary to wrap around the table and operate the table, resulting in a needless motion.

Further, in the prior art, since the stopper and the lock mechanism for locking the top plate at the use position or the standby position are exposed to the outside, when the top plate is rotated, the locking portion and There is a risk that fingers, clothes, etc. may be packed in the claws of the lock mechanism. Further, in such a structure, there is a problem that dust or the like adheres to the movable part and the smooth operation is apt to be hindered.

An object of the present invention is to eliminate such problems.

[0007]

The present invention takes the following means in order to achieve such an object. That is, in the table according to the present invention, a top plate is provided on a pair of supporting elements in a butterfly shape, and the top plate can be rotated between a use position and an upright standby position. A lock mechanism for locking the top plate at least in a use position is provided on each of the support elements, an interlocking rod for interlocking the lock mechanisms is provided between the both support elements, and an unlocking is provided at an intermediate portion of the interlocking rod. It is characterized in that an operating section of is provided.

When it is desired to eliminate the contact locking portion exposed to the outside, the supporting element is provided with a gas spring for urging the top plate toward the standby position, and the gas spring is extended to the maximum extent. It is preferable to set the top plate so as to reach the standby position.

Further, in order to ensure safety and smooth operation, it is desirable to provide an extendable cover between the support element and the top plate for covering the lock mechanism.

[0010]

With such a structure, it becomes possible for a person sitting in front of the top plate to grasp the operation portion by extending the hand forward while keeping the posture, You will be able to unlock it without having to stand up and turn to the side of the table. Therefore, it is possible to simplify the operation when the table is put up and the table is put away.

If the top plate reaches the standby position when the gas spring is fully extended, it is not necessary to abut the top plate against a special stopper.
Therefore, it is possible to eliminate the problem that fingers, clothes, and the like are stuffed at the locking portion.

Further, if a cover is provided between the supporting element and the top plate and the cover is made extendable, the lock mechanism is protected so that the lock mechanism is not always exposed regardless of the rotating position of the top plate. You can keep it. As a result, it is possible to reliably prevent an accident in which a finger or the like is jammed by the claw portion of the lock mechanism, and it is also possible to solve the problem that the smoothness of the operation is impaired due to dust or the like accumulated in the lock mechanism portion. Become.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a top plate 2 is provided in a butterfly manner on the left and right legs 1 which are a pair of supporting elements, and the top plate 2 is provided.
Is configured to be rotatable between a horizontal use position a and an upright standby position b.

The leg body 1 is provided with a leg rod 12 which is spread forward and backward at the lower end of a leg support 11 having a prismatic pipe shape.
2 is provided with a circular base 14 in which casters 13 are internally provided, and two parallel fixed brackets 15 are provided on both side surfaces of the upper end portion of the leg support 11 as shown in FIGS. 3 and 4. Are fixed by welding. The leg columns 11 of the left and right legs 1 are rigidly connected by a horizontal member 16,
A cylindrical decorative cover 17 is attached to the outer side of 1.

As shown in FIGS. 3 and 4, a metal mounting plate 21 is attached to the lower surface of the top plate 2 corresponding to each leg 1 with screws or the like (not shown). A movable bracket 22 is fixed to the plate 21 by welding. The movable bracket 22 includes an upper plate 22a fixedly mounted on the mounting plate 21, two side plates 22b hung from both side edges of the upper plate 22a, and a lower part extending downward from a front-rear center portion of the side plates 22b. It is provided with the arm portion 22c thus made, and is made by bending one sheet metal material. The rear end of the side plate 22b of the movable bracket 22 is rotatably hinged to the rear end of the fixed bracket 15 via the shaft 23. The movable bracket 22 is located between the fixed brackets 15 and has an arm portion 2
2 c is inserted into the leg support 11 of the leg 1. A gas spring 18 is provided inside the leg column 11. The gas spring 18 is configured so as to always exert a biasing force in the extension direction. The lower end portion (not shown) is pivotally attached to the lower end portion of the leg column 11, and the upper end portion 18a is attached to the movable bracket 22. It is connected to the tip of the arm portion 22c via a shaft 18b. In addition, in this table,
No stopper is provided for locking the top plate 2 at the standby position b, and the top plate 2 is set to reach the standby position b when the gas spring 18 is fully extended.

A lock mechanism 3 is provided between each leg 1 and the top plate 2 for locking the top plate 2 in the horizontal use position a. As shown in FIGS. 3 and 4, the lock mechanism 3 is provided between a hook-shaped claw 32 pivotally attached to the upper end of the leg support 11 via a shaft 31 so as to be rotatable forward and backward, and a side plate 22 b of the movable bracket 22. The bent portion 3 of the claw 32 which is provided through
2a, an engagement pin 34 that extends through the fixed bracket 15 and engages the engagement pin 33 at the lock position, and a torsion coil spring that elastically biases the pawl 32 toward the lock position. And 35. At the tip of the claw 32, the cam surface 32 that slidably contacts the engagement pin 33.
shaft 31 to which b is formed and this claw 32 is fixed
Are projected from the inner surface of the leg 1. The protruding ends of the shaft 31 of the lock mechanism 3 of the left and right legs 1 are connected by a connecting rod 4. The connecting rod 4 is in the shape of a pipe, and both ends 4a of the connecting rod 4 are externally fitted and fixed to the shaft 31, and an operating portion 41 for unlocking is formed at an intermediate portion thereof. Specifically, the intermediate portion of the connecting rod 4 is deformed into a mountain shape so as to be eccentric with respect to the shaft 31, and the eccentric portion serves as the operating portion 41.

The space between each leg 1 and the top plate 2 is shown in FIG.
Further, as shown in FIG. 6, a stretchable cover 5 for covering the lock mechanism 3 is provided. The cover 5 is the leg 1
A plurality of intermediate cover portions 52, 53, 54 having different sizes are combined and interposed between a fixed cover portion 51 fixed to the upper end of the and a movable cover portion 55 fixed to the top plate. The shaft 23 is pivotally supported by the shaft 23 and can expand and contract like a fan in a side view. Movable cover part 5
5, and the tip portions of the intermediate cover portions 52 to 54 are formed with inner and outer protrusions that engage with each other. In particular,
As shown in FIG. 6, the inner protrusion 55a provided on the lower end portion of the inner surface of the tip of the movable cover portion 55 engages with the outer protrusion 54b formed on the upper end portion of the outer surface of the tip of the next intermediate cover portion 54 to form the intermediate cover. The portion 54 is pulled up, and the inner protrusion 54a protruding from the lower end of the inner surface of the intermediate cover 54 engages with the outer protrusion 53b protruding from the upper end of the outer surface of the next intermediate cover 53. The movable cover portion 55 and the intermediate cover portions 52 to 54 are formed by pulling up the next intermediate cover portion 53.
Can be expanded like a fan.

Next, the operation of this table will be described.
When the top plate 2 is in the horizontal use position a, the engaging pin 33 provided on the movable bracket 22 causes the claw 32 of the lock mechanism 3 to move.
And the top plate 2 is locked in that position. When the operating portion 41 provided on the connecting rod 4 is pulled toward this side from this state, the claw 32 is rotated from the locked position shown by the solid line in FIGS. 3 and 6 to the unlocked position shown by the imaginary line in FIG. Then, it is separated from the engagement pin 33. As a result, the locked state is released, and the top plate 2 is rotated by the urging force of the gas spring 18 to the upright standby position b as shown in FIGS. 5 and 6. Since the gas spring 18 is in the most extended state when the top plate 2 reaches the standby position b, the top plate 2 is locked at the standby position b by the existence of the gas spring 18. Therefore, a special stopper for stopping the top plate 2 at the standby position b is unnecessary. When you use the table again,
The top plate 2 is gripped and rotated to the use position a against the biasing force of the gas spring 18. When the top plate 2 approaches the use position a, the engaging pin 33 holds the claw 3 waiting at the lock position.
It contacts the second cam surface 32b. When the top plate 2 is further pressed from this position, the engagement pin 33 slides and presses the cam surface 32a to temporarily rotate the pawl 32 to the unlocked position. Then, when the top plate 2 reaches the use position a,
The claw 32 self-returns to the lock position and engages with the engagement pin 33.

With such a structure, a person sitting in front of the top plate 2 can hold the operating portion 41 by extending his / her hand forward in the same posture and standing up. The lock state of the top plate by the lock mechanism 3 can be released without turning to the side of the table. Therefore, it is possible to simplify the operation when the top plate 2 is erected and the table is put away.

Further, since the top plate 2 reaches the standby position b at the position where the gas spring 18 is fully extended, it is not necessary to make the top plate 2 collide with a special stopper to be locked. Therefore, it is possible to eliminate the problem of packing fingers, clothes, etc. at the locking portion, and it is possible to improve safety while reducing the number of parts.

Further, since the extendable cover 5 is provided between the leg 1 and the top plate 2, the lock mechanism 3 is protected from being constantly exposed regardless of the top plate rotating position. Can be set. As a result, it is possible to reliably prevent an accident in which the claw portion of the lock mechanism 3 jams a finger or the like, and it is possible to further improve safety, and dust or the like accumulates on the lock mechanism 3 portion to impair the smooth operation. It also becomes possible to solve the problem of being caused.

The top plate and the supporting elements are not limited to the illustrated embodiments, and the lock mechanism can be variously modified without departing from the spirit of the present invention.

[0024]

As described above in detail, according to the present invention, since the operating portion for operating the lock mechanism is arranged between the pair of supporting elements for supporting the top plate, the flap operation of the top plate is minimized. It can be performed easily with only limited movements, and the work when the table is put up and the table is put away can be simplified.

If the top plate can be stopped at the standby position by the gas spring, it is not necessary to make the top plate collide with a special stopper to be locked, and fingers or clothes are stuffed at the locking portion. That problem can be eliminated.
Therefore, it is possible to improve safety while reducing the number of parts.

Further, by providing an extendable cover between the legs and the top plate, the lock mechanism can be protected so as not to be always exposed regardless of the top plate rotating position. . As a result, it is possible to reliably prevent an accident in which a finger or the like is jammed by the claw portion of the lock mechanism, which can further improve safety, and dust or the like is accumulated in the lock mechanism portion, which impairs smooth operation. It also becomes possible to eliminate problems.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view showing the same embodiment.

FIG. 3 is an enlarged cross-sectional view, partly omitted, taken along the line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a perspective view showing the same embodiment.

FIG. 6 is an operation explanatory view corresponding to FIG. 3 showing the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Support element (leg) 2 ... Top plate 3 ... Lock mechanism 4 ... Interlocking rod 5 ... Cover 41 ... Operation part

Claims (3)

[Claims] 1. A top plate is hinged on a pair of supporting elements, and the top plate is configured to be rotatable between a use position and an upright standby position. A lock mechanism for locking the top plate at least in the use position is provided respectively, and an interlocking rod for interlocking the lock mechanisms is provided between the both support elements, and an operating portion for unlocking is provided at an intermediate portion of the interlocking rod. A table characterized by being provided. 2. A supporting element is provided with a gas spring for urging the top plate toward the standby position, and the top plate is set so as to reach the standby position with the gas spring fully extended. The table according to claim 1, wherein the table is provided. 3. The table according to claim 1, wherein an extendable cover for covering the lock mechanism is provided between the support element and the top plate.