JPS62249612A - Erecting and falling apparatus of table leg - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a table leg raising and lowering device, and more particularly, the present invention relates to a table leg raising and lowering device that can raise and lower all the legs of a table at the same time with a single touch. Regarding equipment.

(Prior art and its problems) Various types of tables with table legs that can be folded when stored have been known, but all of them require too much effort to raise and lower the table legs, and Table legs have the disadvantage that when they are upright, the table legs are not fixed stably and tend to swing easily, and due to loosening and abrasion caused by long-term use, they tend to become loose and loose, causing inconvenience and discomfort during use. there were.

The present invention solves the above-mentioned difficulties, and its purpose is to easily and quickly raise and lower all the eggs on a table at the same time with one touch, and to prevent the legs of the table from easily swinging when they are erected. To provide a table leg hoisting device that is stably fixed.

(Means for Solving the Problems) The present invention includes the following configuration to solve the above problems.

That is, legs are provided near the four corners of the back surface of the table board so that they can be folded down inward, and a vertical guide rail is laid in the vertical direction approximately at the center of the back surface of the table board, and a slide with a handle is installed on this vertical guide rail. A moving body is attached to be slidable, and a horizontal guide rail extending in a direction perpendicular to the vertical guide rail is laid on the back of the table board, and a lid moving plate is provided that slides along this horizontal guide rail. The sliding plate and the sliding body with a handle are connected by a lever, and the free end of the supporting arm of the supporting frame is connected to the leg or the auxiliary member of the leg so that the supporting frame locking part can freely rotate in the direction of the back surface of the table board. A locking plate is fixedly attached to the back surface of the table board and has a locking slope that is attached by being biased in the direction and comes into contact with the support frame locking portion of the support frame in the upright state, and the support frame of the support frame A biaxial hinge in which the end pieces are pivoted to both ends of the center piece with the center piece sandwiched between the locking part and the sliding plate or the connecting plate that connects the sliding plate and the support frame locking part. one end piece is fixed to the support frame locking part and the other end piece is fixed to at least one of the sliding plate or the connecting plate. When the legs are lowered by sliding the sliding plate along the horizontal guide rail, the support frame locking portion is restricted by the locking slope of the locking plate, and the two-axis hinge is It is characterized in that the center piece is set up so that the support frame locking portion is pushed up and the locking plate of the support frame locking portion is released from contact with the locking slope.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

A pair of table legs 14a and 14b are attached to hinges 16a and 16 at both ends of the back surface of the table board 10, and are connected together by connecting bars 12 parallel to the table board lO, which are auxiliary members of the legs.
It is attached to the table board 10 so that it can be folded down towards the inside of the table board 10 at b.

Further, a long vertical guide rail 18 is laid in the vertical direction approximately at the center of the back surface of the table board 10, and this vertical guide rail 18
A sliding body 22 with a handle 20 is attached so as to be slidable in the vertical direction in FIG. 1 along the vertical guide rail 18.

As this sliding body 22 is slid along the vertical guide rail 18, the table legs 14 on both sides of the back surface of the table board 10
The connecting bars 12 that connect each pair of table legs on both sides are connected to the sliding body 22 so that a and 14b stand up or fall down toward the inside of the table board 10. In this embodiment, both sides The support frame locking portions 2 (ia) of the substantially U-shaped support frame 26 are connected to the connecting beam 12 of the support arms 26b, 26 at both ends of the
c is rotatably supported by the connecting bar 12 toward the back surface of the table board 10.

Further, when the support frame 26 is rotated and lowered to the back surface of the table board IO, a short horizontal guide rail 30 is provided on the back surface of the table board 10 that the support frame locking portion 26a of the support frame 26 comes into contact with. A sliding plate 32 is attached to the horizontal guide rail 30 so as to be slidable along the horizontal guide rail 30, and the sliding plate 32 and the sliding body 22 on the vertical guide rail 18 at the center of the back surface of the table board IO. The two ends are connected by a lever 40, and both ends of the lever 40 are pivotally connected to the sliding body 22 and the sliding plate 32, respectively, so that the lever 40 can rotate along the back surface of the table board IO.

Further, on the back surface of the table board 10, a holding mechanism 42 is provided to releasably fix and hold each connection bar 12 of the table legs so that the table legs do not swing when the table legs are erected. In this case, leaf springs 44a and 44b are provided straddling the support frame locking portion 26a of the support frame 26 and pressing the support frame locking portion 26a toward the back surface of the table board IO. The ends of the leaf springs 44a and 44b on the electronic leg side are fixed to the back surface of the table board IO.

Then, the flat plate 10 near the leaf springs 44a and 44b
A locking plate 46 in the shape of a cross-sectional path is laid in the lateral direction of the back surface, and a long inclined surface 48 of the locking plate 46 slopes toward the inside of the table board 10. The slope 50 is sloped so that the more the support frame locking portion 26a locks on the base of the locking slope 50, the more strongly it supports the leg. By being biased toward the back surface of the plate, the support frame locking portion 26a and the locking slope 5
The inclination and material are set so as not to disengage from the support frame locking portion 26a, and the support frame locking portion 26a is fixed to the back surface of the table board 10.

Further, a U-shaped connecting plate 5 is provided between the surface of the sliding plate 32 attached to the horizontal guide rail 30 and the support frame locking part 26a.
2, and the support frame locking portion 26a is connected to the sliding plate 3.
Both ends of the connecting plate 52 and the support frame locking part 26 are connected by hinges 54a, 5 having two axes so that the connecting plate 52 can float upwardly.
4b, and the central part of the connecting plate 52 is connected to the sliding plate 3.
One end of the lever 40 is connected to the sliding plate 32, and the other end is rotatably connected to the sliding body 22 with a handle.

At the connection part between the lever 40 and the sliding plate 32, there is a locking slope 5 of a locking plate 46 on the back surface of the table board 10 in the upright state.
For example, a long hole 55 is drilled on the lever 40 side so that the support frame 26 is securely locked to the locking slope 50 and the support frame locking part 26a can be moved along the locking slope 50 to the base of the locking slope 50. The shaft on the sliding plate 32 side is loosely inserted into this elongated hole 55 so as to be connected with some play.

Note that the hinges 54a and 54b having two shafts that connect the connecting plate 52 and the support frame locking portion 26a have a central piece 60 as shown in FIG. 3(B) (the hinge 54a is shown in the figure). End pieces 61 and 62 are pivotally attached to both ends of the center piece 60 so as to be rotatable. One end piece 61 is fixed to the connecting plate 52a, and the other end piece 62 is fixed to the lower surface of the support frame locking part 26a. Said two-axis hinge 54
a and 54b are connected to each other through the center piece 60 as in the above configuration.
It has two pivot points.

To raise a table leg using the table leg raising device with the above configuration, hold the handle 20 on the back side of the table board 10 with your hand, and move the sliding body 22 along the vertical guide rail 18 to the center of the table board 10. and move. Then, via the lever 40, the table board 10
The sliding plates 32 on both sides of the table board 10 slide along the horizontal guide rails 30 to the outside of the table board 10, and accordingly, the support frame locking portions 2
6a connects to the sliding plate 32 and the connecting plate 52 and hinge 54
The table board 10 is pushed outward by the component of the force that moves the handle 20 via the handles a and 54b, and the table legs 14a and 14b on both sides are erected via the connection bar 12.

Then, with the table legs 14a and 14b standing up against the back surface of the table board IO, the support frame locking portion 26a is held against the plate spring 44a.
and 44b toward the back surface of the table board, and are locked to the locking slope 50 of the locking plate 46 on the back surface of the table board 10, so that the table legs 14a and 14b on both sides are pushed through the support frame 26 and the connecting crosspiece 12. It is fixed to the back surface of the table board 10 so as not to move.

Since the end of the lever 40 and the sliding plate 32 have play due to the elongated hole 55, the leg 14a or 14b swings and there is a gap between the locking slope 50 and the support frame locking portion 26a. When a gap occurs, the biasing force of the leaf spring 44a or 44b acts,
The support frame locking portion 26a is immediately pressed closer to the base on the locking slope 50, and presses the bottom of the leg against the back surface of the table board 10, or surrounds the leg base to prevent the leg from falling outward. The legs are pressed against the fall prevention member 8 to automatically prevent the legs from swinging. It goes without saying that other elastic materials such as a hinge with a spring or a coil spring may be used in place of the plate springs 44a and 44b.

Further, in order to fold the table legs toward the table board side, the user grasps the handle 20 and moves the sliding body 22 at the center of the back surface of the table board 10 upward or downward along the vertical guide rail I8. Then, the sliding plates 32 on both sides of the table board 10 slide toward the inside of the table board 10 along the horizontal guide rails 30 via the levers 40, and as a result, the support frame locking portion 26a engages the connecting plate 52 and the two shafts. Due to the action of the hinges 54a and 54b, the support frame locking portion 26a floats upward from the back surface of the table board 10 against the urging force of the leaf springs 44a and 44b, and from the locking slope 50 on the back surface of the table board 10, the support frame locking portion 26a is removed, and by further moving the handle 20, the support frame 26 is pulled inward of the table board IO,
The Toko legs 14a and 14b, which are connected to the support frame 26 via the connecting beam 12, are laid down and folded toward the inside of the Toko board 10.

FIGS. 3(A), (B), (C), (D), and (E) are explanatory diagrams showing in detail the functions of the support frame 26, hinge 54a, connecting plate 52, etc. when the legs are laid down. .

When the legs 14a are upright, the support frame 26 is attached to the locking plate 4.
6 (A). When lowering the legs 14a and 14b, move the handle 20 onto the vertical guide rail 1.
8 from the center of the table board outward. As a result, the sliding body 22 moves and the sliding plate 32 moves inward of the table board via the lever 40. Hinge 54
Since a is a biaxial hinge, when the sliding plate 32 is pulled, the end piece 61 fixed to the connecting plate 52 of the hinge 54a is pulled inward of the table board, and the hinge 54a opens and the central piece 60 is pulled. stands up and pushes up the tip of the support frame 26 (B).

When the tip of the support frame 26 rises above the top of the locking plate 46, the support frame 26 and the locking plate 46 are unlatched, and by further moving the lever 40, the support frame 26
6 slides on the slope of the locking plate 46 and is pulled toward the inside of the table board, causing the legs 14a and 14b to fall down (C);
(D), (E).

In the embodiments described above, the support frame 26 has been described as having a substantially U-shape, but it is not necessarily limited to this shape. It goes without saying that any shape may be used as long as it is constituted by the locking portion 26a, and any auxiliary member may be interposed between the legs 14a, 14b and the support frame 26. The term "auxiliary member" as used herein is a general term for all members interposed between the leg and the support frame and involved in raising and lowering the leg.

Furthermore, the linkage mechanism for linking the handle 20 and the table leg is not limited to the method described above; in short, the lever 4o is moved using the component force P' of the force P that moves the handle 2o along the vertical guide rail. Raise and lock the legs through the
Further, it may be any device that allows the legs to fall down at the same time as the lock is released. Furthermore, if the length of the support arms 26b, 26c can be finely adjusted and the position of the locking slope 50 can be finely adjusted, this will not only be effective when assembling the leg raising device, but will also be easier to use during use. It is also effective in correcting deviations, etc.

Further, in the above embodiment, the biaxial hinges 54a and 54b were provided between the connecting plate 52 and the support frame locking part 26a, but the sliding plate 32 and the support frame locking part 26a
A two-axis hinge may be provided between them.

(Effects of the Invention) As described above, by using the table leg raising device of the present invention, you can easily and quickly just hold the handle at the center of the back of the table board with your hand and slide the sliding body up and down along the vertical guide rail. All table legs can be lowered or raised with a single touch. In addition, the holding mechanism allows the table legs to be held in an upright position.
When the legs swing, the support frame locking part immediately moves to the base of the locking slope and tightens the legs, so the legs can be stably fixed so that they do not move easily, and the table legs will not swing while the table is in use. It does not cause any inconvenience or discomfort due to movement. Furthermore, since the present invention utilizes a biaxial hinge as a means for releasing the locking between the support frame locking portion and the locking plate, the user can automatically move the handle when the user is in a prone position. The lock can be released and the handle can be moved to allow the user to fully lie down.

In addition, since the moving distance of the handle on the vertical guide rail is set to be larger than the moving distance of the support release means, for example, the sliding distance of the sliding plate on the horizontal guide rail, the handle can be moved for raising and lowering the legs. It has the advantage of being easy to use, even for women and children with limited physical strength, as it requires little force to move.

In addition, when transporting the table with the table legs folded, you can easily hang it by grasping the handle, and when you hang it by grasping the handle, the table is suspended low on the side of your body, making it easy to carry. It's easy, and no matter which side of the table you're using, you can just grab the handle and pull it up.
It has great benefits such as being able to hang it up and move it.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments (it goes without saying that many modifications can be made without departing from the spirit of the invention). That's true.

[Brief explanation of drawings]

The drawings show preferred embodiments of the present invention; FIG. 1 is a bottom view of a table according to an embodiment of the present invention with the legs upright, FIG. 2 is a bottom view of the table with the legs laid down, and FIG. Figures (A) to (E) are explanatory diagrams showing the procedure for lodging the legs. 8... Leg overturning prevention member, 10... Table board, 12...
...Connection bars, 14a, 14b...Table legs, 16
a, 16b--Hinge, 18... Vertical guide rail,
20...handle, 22...sliding body, 26...
Support frame, 26a...Support frame locking portion, 26b, 26
C...Support arm, 30...Horizontal guide rail, 32.
...Sliding plate, 40... Lever, 42... Holding mechanism, 44a, 44b... Plate spring, 46... Locking plate,
48... Inclined surface, 50... Locking slope, 52...
- Connecting plate, 54a, 54b... hinge, 55... long hole.

Claims (1)

[Claims] 1. Legs are provided near the four corners of the back of the table board so that they can be folded inward, and a vertical guide rail is installed in the vertical direction approximately in the center of the back of the table board, and a handle with a slide is attached to this vertical guide rail. A moving body is attached to be slidable, and a horizontal guide rail extending in a direction perpendicular to the vertical guide rail is laid on the back of the table board, and a sliding plate is provided that slides along this horizontal guide rail. The moving plate and the sliding body with a handle are connected by a lever, and the free end of the support arm of the support frame is connected to the leg or the auxiliary member of the leg so that the support frame locking part can freely rotate in the direction of the back surface of the table board and in the same direction. A locking plate having a locking slope that contacts the support frame locking portion of the support frame in the upright state is fixedly provided on the back surface of the table board, and the support frame locking portion of the support frame is fixed to the table board. Between the stop part and the sliding plate or the connecting plate that connects the sliding plate and the support frame locking part, a two-axis hinge with the end pieces pivoted on both ends of the central piece with the central piece in between is installed. one end piece is fixed to the support frame locking part, and the other end piece is fixed to at least one of the sliding plate or the connecting plate, so that the sliding body with a handle can be slid on the vertical guide rail. As a result, when the sliding plate is slid along the horizontal guide rail to lower the leg, the support frame locking portion is restricted by the locking slope of the locking plate, so that the center of the two-axis hinge A device for raising and lowering a table leg, characterized in that the piece is set up so that the support frame locking portion is pushed up and the locking plate of the support frame locking portion is released from contact with the locking slope. .