JP2999185B1 - Folding table - Google Patents

Abstract

An object of the present invention is to provide a folding table which is safe without danger of an operator's hand being caught in operation, and which is easy to operate and excellent in operability. SOLUTION: Left and right latch holders 11a, 11b hanging on opposite lower end portions of a pair of left and right top plates 2a, 2b have latch claws.
The base ends of the latches 15a and 15b are pivotally supported by latch pins 16a and 16b, the distal end of the latch claw is pivotally supported by a rotation shaft 12, and the base ends of the latches 20a and 20b are pivotally supported by the respective latch pins. Locking portions 21a and 21b are provided at the leading end of the latch claw for locking with the claw portion of the latch claw. Wires 24a and 24b for rotating the latch in a direction in which the locking portion of the latch is released from the claw portion of the latch claw are released. Attach one end to the latch and connect the other end of the wire to the lever link 25a, 25
b, this lever link is attached to one end of a lever shaft 26a, 26b pivotally supported by a latch holder, and provided with operating levers 28a, 28b at the other end extending near the front edge of the top plate of the lever shaft. .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding table used in a conference room of an office or the like.

[0002]

2. Description of the Related Art As a folding table of this type, for example, a rotating shaft is pivotally supported between left and right latch holders hanging down at lower end portions of a pair of left and right top plates, and the rotating plate is used as a fulcrum. Is known which is rotatable between a horizontal state and an upright vertical state.

[0003]

However, in this conventional folding table, the operating lever is located at a position where it can be easily reached near the opposite ends of the lower surfaces of the left and right top plates, and only one location is provided on the lower surface of one of the top plates. Since it is provided, it is necessary to fold both top plates to an unused vertical state or to make it horizontal for use, so when operating the operation lever with one hand, the other hand playing Was pinched between the opposite end surfaces of the left and right top plates, causing a problem of unexpected injury.

Accordingly, the present invention solves the above-mentioned conventional problems, and provides a folding table which is safe without danger of the operator's hand being caught in operation, and which is easy to operate and excellent in operability. The purpose is to do.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, a rotating shaft is pivotally supported between left and right latch holders hanging at lower end facing ends of a pair of left and right top plates. In a folding table in which a top plate is rotatable between a horizontal state and an upright vertical state with an axis as a fulcrum, a base end of a latch claw is pivotally supported on each latch holder by a latch pin, and a tip of the latch claw is provided. Parts are pivotally supported by a rotating shaft, the base ends of the latches are pivotally supported by the respective latch pins, and the leading ends of these latches are provided with locking portions for locking to the claws of the latch claws. A biasing member for biasing the latch pin to engage with the claw portion is provided on the latch pin,
One end of a wire for rotating the latch in a direction in which the latching portion of the latch is released from the claw portion of the latch claw against the urging force of these urging members is attached to the latch, and the other end of the wire is connected to the lever link. The lever link is attached to one end of a lever shaft pivotally supported by a latch holder, and an operation lever is provided at the other end extending to near the front edge of the top plate of the lever shaft, and when the operation lever is rotated, The rotation power is transmitted to the wire via the lever link, and the latch can be rotated.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A folding table according to an embodiment of the present invention will be described with reference to the drawings. 1 is an overall front view of a state in which a top plate is in a horizontal state and before folding, FIG. 2 is a perspective view of a state in which the top plate is removed from FIG. 1, and FIG. 3 is an enlarged perspective view of a partially broken side hinge portion. FIG. 4 is an enlarged vertical sectional front view of a main part, and FIG. 5 is an enlarged cross-sectional plan view of a main part.

In FIGS. 1 and 2, reference numeral 1 denotes a table, a pair of left and right top plates 2a and 2b, left and right machine frames 3a and 3b for mounting and supporting the top plate on the upper surface, and attached to the machine frames. Left and right legs 4a and 4b. The machine frames 3a and 3b include a pair of front and rear horizontal rods 5a and 5b and a vertical rod 6a,
6b, the upper ends of the legs 4a, 4b are attached to the center of the vertical rods 6a, 6b. As shown in FIG. 3, side hinges 7a and 7b are attached to the inside positions of the opposite ends of the horizontal rods 5a and 5b of the machine frames 3a and 3b, and a hinge pin 8 is provided at a lower overlapping portion of these side hinges. The top plate 2 is mounted on the machine frames 3a and 3b with these hinge pins as fulcrums.
a and 2b are rotatable between a horizontal state (used state) and an upright vertical state (unused state). The hinge pin 8 is provided with a spring 9 for urging the top plates 2a and 2b in the folding direction in which the top plates 2a and 2b are always in a vertical state, with both ends fixed to the side hinge portions 7a and 7b. Top plate 2a, 2
b, both side hinge portions 7a, 7
Latch holders 11a and 11b are hung at the center between b.
A center pin 12 as a rotation axis is mounted coaxially with the hinge pin 8 on the lower overlap portion of these latch holders.

As shown in FIGS. 4 and 5, the bases of the latch claws 15a and 15b are provided on the latch holders 11a and 11b.
The latch pawl is pivotally supported by a center pin 12 while being pivotally supported by 16a and 16b. Latch claw 15
Claws 17a and 17b are provided to protrude above the outer peripheral edge of the distal ends of the a and 15b. A flat portion 18a is provided on the opposite side of one claw portion 17a.
Is provided via a lock step portion 19a, and only the flat portion 18b is provided on the opposite side of the other claw portion 17b. The latch pins 16a and 16b have latch bases at the base ends of the latches 20a and 20b.
It is pivotally supported in an overlapping manner with 15a and 15b. Claw portions of the latch claws 15a, 15b are provided at the tips of the latches 20a, 20b.
Locking portions 21a and 21b are provided for locking to 17a and 17b. Reference numerals 22a and 22b denote springs serving as urging members. The latch portions 21a and 21b of the latches 20a and 20b are used as latch pawls 15a and 15b.
One end is latched to the rear outer peripheral edge of the latches 20a and 20b, and the other end is latched to a stay pin, which will be described later, so that the latches 16a and 16b are interposed.

Reference numerals 24a and 24b denote wires, and springs 22a and 24b
The latching portions 21a of the latches 20a, 20b resist the urging force of the 22b.
One end is attached to the latches 20a and 20b, and the other end is connected to the lever links 25a and 20b so that the latches 20b can be rotated in a direction in which the latches 21b are locked and released from the claws 17a and 17b of the latch claws 15a and 15b. It is attached to 25b. The lever links 25a, 25b are attached to one ends of the lever shafts 26a, 26b pivotally supported by the latch holders 11a, 11b in the holders. The other ends of the lever shafts 26a and 26b extend to near the front edges of the top plates 2a and 2b, and the other ends are provided with operation levers 28a and 28b. 30a and 30b are stays, and one end is attached to a stay pin 31a,
The other end is pivotally supported by the latch holders 11b, 11a by stay pins 32a, 32b. 35a, 35
b is a caster attached to the lower ends of the legs 4a and 4b, and in FIG. 5, 36 is a latch claw 15a and a latch 20b.
The center pin 12 is inserted into the gap between the latch claw 15b and the latch 20a.
Is a spacer made of resin as a spacing member interposed and disposed in the space.

Next, the operation of this embodiment will be described.
In order to fold the top plates 2a, 2b in the horizontal use state in FIG. 1 to make them vertically non-use state, the left and right operation levers 28a, 28b near the opposite ends thereof are moved by the top plates 2a, 2b as shown by arrows. At the same time, it is grasped with both hands and pressed and rotated toward the top plate. Then, the turning power is transmitted as a pulling force to the wires 24a and 24b via the lever links 25a and 25b, respectively, and the latches 20a and 20b are turned against the forces of the springs 22a and 22b. When the latches 20a and 20b are rotated, the latching portions 21a and 21b of the latch are moved to the pawl portions 17a and 17a of the latch claws 15a and 15b.
The lock is released from 17b. When the lock is released, the force of the spring 9 also acts, so that the top plates 2a, 2b
Is rotated about the center pin 12 and the hinge pin 8 as fulcrums. Then, as shown in FIGS. 6 and 7, the intermediate state of the folding is reached. When the top plates 2a and 2b are further rotated from this intermediate state, the top plates 2a and 2b are further gradually folded and completely folded as shown in FIG. As shown in FIG. 9, the latching portions 21a and 21b of the latches 20a and 20b move to the flat portions 18a of the latch claws 15a and 15b.
18b, and the latch 21b of the latch 20b is
It is locked by the lock step portion 19a of 15a to be in a locked state, and this leads to an unused state.

To return from the non-use state shown in FIGS. 8 and 9 to the use state shown in FIG. 1, the operation levers 28a and 28b on the left and right near the opposite ends of the top plates 2a and 2b together with the top plates 2a and 2b can be used with both hands. Grasp and press and rotate to the top plate side. This allows the latch
Since the locking portion 21b of the latch 20b is disengaged from the lock step 19a of the latch claw 15a, when the top plate is rotated in the opening direction opposite to the above with the center pin 12 and the hinge pin 8 as fulcrums, the top plate 2
a and 2b gradually open, and when they reach an intermediate state, FIG.
As shown in (1), the locking portions 21a and 21b of the latches 20a and 20b are locked on the surfaces of the latch claws 15a and 15b opposite to the claws 17a and 17b. Will be retained. Therefore, even if a finger is inadvertently inserted into the gap between the opposed ends of the top plates 2a and 2b, the finger is not pinched. In order to open the top plate by further rotating the top plate from this intermediate state, the operation levers 28a and 28 that have once released their grips are used.
b is grasped again with both hands together with the top plate, and is pressed and rotated toward the top plate. As a result, the latches 20a and 20b rotate and the locking portion
21a and 21b are lifted up and the claws 17 of the latch claws 15a and 15b
a, 17b, the top plate gradually opens, and the claw portions 17a, 17b of the latch claws 15a, 15b.
When the locking portions 21a and 21b of the latches 20a and 20b, which have passed over the lock, are again locked to the claw portions 17a and 17b of the latch claws 15a and 15b, the top plate is returned to its original horizontal use state as shown in FIG. Return to

In the operation from the non-use state, the operation levers 28a, 28b are moved from the beginning to the end to the top plates 2a, 2b.
In addition, it may be held by both hands and pressed and rotated toward the top plate. According to such an operation, the top plate can be continuously and smoothly reversely rotated without being temporarily held in the intermediate state, and the top plate can be quickly brought into a use state.

In this embodiment, a temporary rotation holding mechanism in an intermediate state of the top plate is employed, but this is not always necessary. Also, the latches 20a and 20b and the latch claws 15
The configurations of a and 15b are merely preferred examples, and the present invention can be variously modified within the scope described in the claims when the present invention is implemented.

[0014]

The present invention has the above-described configuration,
When operating, the operator must always hold the left and right operation levers near the opposite end of the top plate with both hands together with the top plate and operate them at the same time. This eliminates the need for the operator to pinch his hand between the opposite ends of the top plate, which is extremely safe in operation. Moreover, the operation can be performed by grasping both the operation lever and the top plate on the front edge side of the top plate by hand, and there are excellent effects such as easy operation and excellent operability.

[Brief description of the drawings]

FIG. 1 is an overall front view of a folding table according to an embodiment of the present invention in a state in which a top plate is in a horizontal state and before folding.

FIG. 2 is a perspective view showing a state where a top plate is removed from FIG. 1;

FIG. 3 is an enlarged perspective view of a partially broken side hinge portion.

FIG. 4 is an enlarged vertical sectional front view of a main part.

FIG. 5 is an enlarged cross-sectional plan view of a main part.

FIG. 6 is an overall front view corresponding to FIG. 1 with a top plate in an intermediate state.

FIG. 7 is an enlarged vertical sectional front view of a main part of FIG. 6;

FIG. 8 is an overall front view corresponding to FIG. 1 with a top plate in a vertical state.

FIG. 9 is an enlarged vertical sectional front view of a main part of FIG. 8;

[Explanation of symbols]

 1 Table 2a, 2b Top plate 3a, 3b Machine frame 4a, 4b Leg 7a, 7b Side hinge 8 Hinge pin 11a, 11b Latch holder 12 Center pin 15a, 15b Latch claw 16a, 16b Latch pin 17a, 17b Claw 20a, 20b Latch 21a , 21b Locking portion 22a, 22b Spring 24a, 24b Wire 25a, 25b Lever link 26a, 26b Lever shaft 28a, 28b Operation lever

Claims (1)

(57) [Claims] 1. A rotating shaft is pivotally supported between left and right latch holders hanging down at lower end portions of a pair of left and right top plates, and the top plate is in a horizontal state and an upright position with the rotating shaft as a fulcrum. In the folding table which is rotatable to the vertical state, the base end of the latch claw is pivotally supported on each of the latch holders by a latch pin, and the tip of the latch claw is pivotally supported by the rotation shaft. Each latch pin pivotally supports a base end of the latch, and a distal end of each of the latches is provided with a locking portion for locking the claw of the latch claw, and the locking portion of each of the latches is locked to the claw of the latch claw. A biasing member for biasing the latch pin is interposed in the latch pin, and the latch is rotated in a direction in which the latching portion of the latch locks and releases from the claw portion of the latch claw against the biasing force of the biasing member. Attach one end of the wire to the latch and Attach the end to the lever link, the lever link is mounted to one end of a lever shaft pivotally supported on the latch holder, also the operation lever provided in the other end portion extending to the vicinity of the front edge of the top plate of the lever shaft,
A folding table wherein when the operation lever is turned, the turning power is transmitted to a wire via a lever link and the latch can be turned.