JPS6320523B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for raising and lowering table legs, and more particularly, the present invention relates to a raising and lowering device for table legs, and more particularly, a raising and lowering device for table legs that can simultaneously raise and lower all the legs of a table 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. Table legs have the disadvantage that when they are standing upright, the table legs are not fixed stably and tend to swing easily, and due to loosening or wear caused by long-term use, they tend to become rattled, causing inconvenience and discomfort during use. It was hot.

The present invention solves the above-mentioned difficulties, and its purpose is to easily and quickly raise and lower all the legs of a table at the same time with one touch, and to prevent the legs from swinging easily when the legs are in an upright position. 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 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 connected to the support frame locking part by fixing the other end piece to at least one of the sliding plate or the connecting plate, and the sliding body with a handle is moved on the vertical guide rail. When the legs are slid and the sliding plates are slid along the horizontal guide rails to lower the legs, the support frame locking portions are restricted by the locking slopes of the locking plates, so that the two-axis The central piece of the hinge stands up, thereby pushing up the support frame locking portion and releasing the locking plate of the support frame locking portion 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 integrally connected at both ends of the back surface of the table board 10 by connecting bars 12 parallel to the table board 10, which are auxiliary members of the legs. It is attached so that it can be laid down.

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 a sliding body 22 with a handle 20 is attached to the vertical guide rail 18 along the first vertical guide rail 18. It is attached so as to be slidable in the vertical direction in the figure.

As this sliding body 22 is slid along the vertical guide rail 18, the table legs 14a and 14b on both sides of the back surface of the table board 10 stand up or fall down toward the inside of the table board 10. Connecting crosspiece 12 and sliding body 2 connecting each pair of table legs
In this embodiment, the support frame locking portions 2 of the substantially U-shaped support frames 26 are connected to the connecting bars 12 on both sides.
Support arms 26b, 26c at both ends across 6a
is a connecting bar 1 that is rotatable toward the back side of the table board 10.
It is supported by 2.

Further, when the support frame 26 is rotated and lowered to the back surface of the table board 10, a short horizontal guide rail 30 is provided on the back surface of the table board 10, which the support frame locking portion 26a of the support frame 26 comes into contact with. is laid, and the sliding plate 32 is attached to the horizontal guide rail 30.
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 10 are connected by a lever 40, and both ends of the lever 40 are slidably attached to each other. Moving body 22 and sliding plate 32
A lever 40 is rotatably pivoted along the back surface of the table board 10.

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. Here, plate springs 44a and 44b are provided straddling the support frame locking portion 26a of the support frame 26 and pushing the support frame locking portion 26a toward the back surface of the table board 10 in the lateral direction of the back surface of the table board 10. The ends of the leaf springs 44a and 44b on the table leg side are fixed to the back surface of the table board 10.

A locking plate 46 having a substantially rectangular cross section is laid in the lateral direction of the back surface of the table board 10 near the leaf springs 44a and 44b, and a long inclined surface 48 of the locking plate 46 is connected to the table board 10. The short locking slope 50 is inclined inwardly, and is sloped so that the more the support frame locking part 26a locks on the base of the locking slope 50 than the upper part, the stronger the leg is supported. The slope and material are set so that the support frame locking portion 26a is always urged toward the back surface of the table board in the upright state, so that the support frame locking portion 26a and the locking slope 50 are not disengaged. It is fixed to the back surface of the table board 10 by contacting the support frame locking portion 26a.

Further, the surface of the sliding plate 32 attached to the horizontal guide rail 30 and the support frame locking portion 26a are connected via a U-shaped connecting plate 52, and the support frame locking portion 26a is slidable. Both ends of the connecting plate 52 and the support frame locking part 2 are connected so that the moving plate 32 can float upward.
6a through hinges 54a and 54b having two axes, the center part of the connecting plate 52 is fixed to the surface of the sliding plate 32, and one end of the lever 40 is connected to the sliding plate 32.
The other end is rotatably connected to a sliding body 22 with a handle.
connected to.

At the connection part between the lever 40 and the sliding plate 32,
In the standing state, the locking plate 4 on the back side of the table board 10
The support frame 26 is securely locked on the locking slope 50 of No. 6, and the support frame locking portion 26 is securely locked along the locking slope 50.
For example, a long hole 55 is bored on the lever 40 side so that a can move up to the base of the locking slope 50, and the shaft on the sliding plate 32 side is loosely inserted into this long hole 55 to provide play. and connect.

Note that the hinges 54a and 54b having two shafts connecting the connecting plate 52 and the support frame locking part 26a are as follows:
As shown in FIG. 3B, end pieces 61 and 62 are rotatably pivoted to both ends of the center piece 60, sandwiching the center piece 60 (the hinge 54a is shown in the figure). One end piece 61 is attached to the connecting plate 52.
The other end piece 62 is fixed to the support frame locking part 26
It is fixedly installed on the lower surface of a. the two-axis hinge 54a;
54b has two pivot points via the center piece 60, as in the above configuration.

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, the sliding plates 32 on both sides of the table board 10 are moved via the lever 40.
slides outward of the table board 10 along the horizontal guide rail 30, and the connecting plate 52 and the hinge 54 connect the support frame locking portion 26a to the sliding plate 32.
Due to the force component of the force that moves the handle 20 through the handles 14a and 54b, the table board 10 is pushed outward and the table legs 14a and 14b on both sides are moved through the connecting bars 12.
stands up.

The table legs 14a and 14b are the table board 10.
The support frame locking portion 26a stands up against the back surface.
are pressed toward the back surface of the table board by the leaf springs 44a and 44b, 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 connected to the support frame 26 and the connecting crosspiece. 12 to the back surface of the table board 10 so as not to move.

The end of the lever 40 and the sliding plate 32 are connected to the elongated hole 5.
5 has play, so that the leg 14a or 14b swings, and the locking slope 50 and the support frame locking portion 2
If there is even a slight gap between the leaf spring 44a and the leaf spring 44a,
Or, the biasing force of 44b acts, and the support frame locking portion 26a
is immediately pressed closer to the base on the locking slope 50, pressing the bottom of the leg against the back surface of the table board 10, or against the leg overturning prevention member 8 that surrounds the leg base and prevents the leg from falling outward. Press the legs to automatically prevent the legs from swinging. Note that the leaf spring 44a,
It goes without saying that other elastic materials such as a spring-loaded hinge or a coil spring may be used in place of 44b.

Further, in order to fold the table legs to the inside of the table board, grasp the handle 20 and move the sliding body 22 at the center of the back surface of the table board 10 upward or downward along the vertical guide rail 18. 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 locking slope 50 on the back surface of the table board 10 floats upward from the back surface of the table board 10 against the urging force of the leaf springs 44a and 44b.
Then, the support frame locking part 26a comes off, and the handle 2
By moving the support frame 26, the table board 1
Table legs 14a and 1 are pulled inward and connected to the support frame 26 via the connecting crosspiece 12.
4b is laid down and folded toward the inside of the table board 10.

FIGS. 3A, 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 in an upright position, the support frame 26 is locked to the locking plate 46 (A). When lowering the legs 14a and 14b, the handle 20 is moved outward from the center of the table board along the vertical guide rail 18. As a result, the sliding body 22 moves and the sliding plate 32 moves inward of the table board via the lever 40. Since the hinge 54a 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 opens. 60 stands up and supports frame 2
B to push up the tip of 6. 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
C, D, and E slide on the slope of the locking plate 46 and are pulled toward the inside of the table board, causing the legs 14a and 14b to fall down.

In addition, in the embodiment described above, the support frame 26
has been described as having a substantially U-shape, but is not necessarily limited to this shape.
Any shape may be used as long as the support frame locking portion 26a locks on the table board 10 side.
Needless to say, any auxiliary member may be interposed between 4a, 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 40 is moved using the component force P' of the force P that moves the handle 20 along the vertical guide rail. Any device may be used as long as the leg is raised and locked through the leg, and the leg is released and the leg is lowered at the same time. 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, biaxial hinges 54a, 54b are provided between the connecting plate 52 and the support frame locking portion 26a.
However, the sliding plate 32 is connected without using the connecting plate 52.
A biaxial hinge may be provided between the support frame locking portion 26a and the support frame locking portion 26a.

(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, when the table leg is erected and the holding mechanism swings, the support frame locking part immediately moves to the base of the locking slope and tightens the leg, making it stable so that the leg does not move easily. This prevents the inconvenience and discomfort caused by the table legs swinging while the table is in use. moreover,
In the present invention, a biaxial hinge is used as a means for releasing the lock between the support frame locking part and the locking plate, so
By simply moving the handle, the lock can be automatically released when the user is in a prone position, and the user can move the handle to completely lean 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.
Also, if you hang the table by grasping the handle, it will hang low on the side of your body, making it easy to transport.Also, if you pull up the table from either side, you can grasp the handle and pull it upwards. It has great benefits such as being able to be hung and moved.

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

[Brief explanation of the drawing]

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
... Connecting crosspiece, 14a, 14b ... Table leg, 16,
16b... Hinge, 18... Vertical guide rail, 20
...Handle, 22...Sliding body, 26...Support frame, 2
6a...Support frame locking part, 26b, 26c...Support arm, 30...Horizontal guide rail, 32...Sliding plate,
40... Lever, 42... Holding mechanism, 44a, 4
4b... Leaf spring, 46... Locking plate, 48... Inclined surface, 50... Locking slope, 52... Connection plate, 54
a, 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 at the center of the back of the table board, and a sliding body with a handle is installed on this vertical guide rail. is slidably attached, and a horizontal guide rail extending in a direction perpendicular to the vertical guide rail is laid on the back side of the table board, and a sliding plate is provided that slides along this horizontal guide rail.
This 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 comes into contact with the support frame locking portion of the support frame in the upright state, and is attached by being biased in the same direction, and supports the support frame. Between the frame locking part and the sliding plate or the connecting plate that connects the sliding plate and the support frame locking part, there is a two-shaft shaft with the end pieces pivoted on both ends of the center piece with the center piece in between. One end piece is connected to the support frame locking part by fixing the other end piece to at least one of the sliding plate or the connecting plate using a hinge, and the sliding body with a handle is connected to the vertical guide rail. When the top is slid and 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. The center piece of the biaxial hinge stands up, thereby pushing up the support frame locking portion and releasing the locking plate of the support frame locking portion from contact with the locking slope. A device for raising and lowering table legs.