JP2002223861A - Supporting part for folding table, folding chair, and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an innovative supporting part for folding tables, folding chairs, and the like, with commercial values. SOLUTION: Parts 2 for attaching legs are placed respectively at the back and the front of a place, where supporting parts 1 for the right and left meet, on the back of supporting parts 1 which overlap when folded. The parts 2 for attaching legs for the right and left are connected as they can rotate, and the supporting parts 1 for the left and right are put together and connected. Each leg 3 is mounted to the part 2 for attaching a leg as it can rotate, and the supporting parts 1 are turned around vertically. The supporting parts 1 are folded and overlapped while the legs 3 are put between the supporting parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support such as a foldable table or chair.

[0002]

2. Description of the Related Art Various foldable tables and chairs have been proposed which are used outdoors, for example, at campsites, and are convenient to carry and store.

[0003] The present applicant has focused on these foldable tables and chairs, and can obtain a good use state and a foldable state from an unconventional structure, and is excellent in mass production and cost due to its simple structure. As a result, we have invented a revolutionary foldable support such as a table or chair, which has a very high commercial value.

[0004]

The gist of the present invention will be described with reference to the accompanying drawings.

[0005] Leg mounting portions 2 are respectively provided on the front and rear sides of the rear surfaces of the left and right support members 1 which are folded in two, and the left and right leg mounting portions 2 are pivotally connected to each other.
And a foldable table configured to pivotally attach the legs 3 to the leg mounting portions 2, and to suspend and rotate the left and right support members 1 so as to sandwich the legs 3 so as to be overlapped. In a supporting body such as a chair or a chair, a bridging rod portion 4A of a U-shaped wire 4 having a spring property is disposed along the back surface of the supporting member 1 so as to intersect with a butt edge 5 of the supporting members 1 and is arranged in front and rear. Are respectively connected to the legs 3 facing each other diagonally in the front-rear direction, and this U-shaped wire 4 is arranged in an X shape on the back surface of the support member 1 to form a diagonal shape in the front-rear direction. Opposite leg portions 3 are connected to each other, and guide portions 6 for guiding sliding of the U-shaped wire 4 in the direction of the back surface of the support member 1 are provided on the leg mounting portions 2 respectively. By folding or polymerizing the left and right legs 3, With the rotation of the right support member 1, the U-shaped wire 4 is twisted and slides toward the butting edge 5 along the guide portion 6 against the torsion return force. The torsional return force does not act on the support member 1 by hanging down, so that the support member 1 is held in a state where the support member 1 is folded and overlapped with the leg portion 3 interposed therebetween. Pertaining to supporting bodies such as simple tables and chairs.

The hanging rod portion 4 of the U-shaped wire 4
B is bent, the bent portion 4B 'is pivotally connected to each of the legs 3 facing each other diagonally in the front-rear direction, and the U-shaped wire 4 is erected and connected between the legs 3. The present invention relates to a support such as a foldable table or chair according to claim 1.

A guide member 6 provided on each of the leg mounting portions 2 is provided with a slide restricting portion 7 for restricting the U-shaped wire 4 from moving in the direction of the back surface of the support member 1 toward the outer edge of the support member 1. The present invention relates to a support such as a foldable table or chair according to any one of claims 1 and 2, wherein the support is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

According to the present invention, when the left and right support members 1 are folded and overlapped or the left and right legs 3 are overlapped, the U-shaped wire 4 is twisted with the rotation of the left and right support members 1 and
It will slide to the butting edge 5 side along the guide part 6 against this torsional return force, and
By rotating the right and left support members 1 downward, the torsional return force does not act on the support members 1, and the state in which the support members 1 are folded and overlapped with the leg portions 3 therebetween is maintained.

In the present invention, the urging force for urging the left and right support members 1 in the opening direction is obtained by the U-shaped wire 4 as described above. More specifically, a bridging rod portion 4A of a U-shaped wire 4 having a spring property is disposed along the back surface of the support member 1 so as to intersect with the butting edge 5 of the support members 1 and the front and rear hanging rods. The ends of the portions 4B are connected to the legs 3 which face each other diagonally in the front-rear direction, and the U-shaped wires 4 are arranged in an X-shape on the back surface of the support member 1 to face the front-rear diagonally. The legs 3 are connected to each other, and the torsional return force of the U-shaped wire 4 caused by the rotation of the left and right support members 1 is used as an urging force for urging the support member 1 in the opening direction. The torsional return force is configured so that the left and right support members 1 do not act on the support members 1 by rotating the support members 1 down.

Therefore, by adopting a revolutionary structure using the U-shaped wire 4 which has not existed in the related art, it is possible to obtain a good use state (a state in which the left and right support members 1 are opened) in the support body having the folding structure. ) And the folded state (the state in which the left and right support members 1 are closed) can be reliably obtained.

[0012]

1 to 10 show a first embodiment of the present invention, and FIG. 11 shows a second embodiment, which will be described below.

The first embodiment will be described.

In the first embodiment, the left and right support members 1 are vertically rotated so that the legs 3 can be sandwiched and folded and polymerized. In the first embodiment, a table is adopted as a support having a folding structure. However, as long as the structure can exhibit the characteristics of the present embodiment, for example, a mounting table and the like can be used in a wide range of applications. .

Specifically, as shown in FIGS. 1 and 2, leg attachment portions 2 are provided at front and rear positions (four locations) on the back side of the table plate as a pair of support members 1 at the butting side.

The leg mounting portion 2 is made of a suitable metal plate as shown in FIG. 2, and has a first hanging piece 8 formed at one end edge thereof. , A leg 3 described later is pivotally mounted. Therefore, the table 1
And the leg 3 are relatively rotatable relative to each other (see FIGS. 3 and 4).

Further, the first hanging piece 8 is overlapped with the first hanging piece 8 of the other opposing leg mounting portion 2 in a state where the butting edges 5 of the respective table boards 1 face each other. Therefore, the left and right table plates 1 are pivoted downwardly (relatively relative to each other) by the pivotal connection of the leg attachment portions 2.
As a result, the legs 3 can also be rotated with respect to the table 1 so that the legs 3 can be sandwiched between the tables 1 (FIGS. 3 and 4). reference).

The leg attachment portion 2 has a second hanging piece 9 formed on the other end edge opposite to the side on which the first hanging piece 8 is formed. A guide portion 6 for guiding the linear wire 4 is provided.

The guide portion 6 is formed by forming a hole 6a of a predetermined length in the second hanging piece 9 as shown in FIGS. 2, 9 and 10, and opens and closes the left and right table boards 1. When
The U-shaped wire 4 is configured to slide in the hole 6a toward the butting edge 5 of the left and right table boards 1 and the opposite side with the rotation of the leg 3 toward the back side of the table board 1. I have.

The length of the guide part 6 is
With the opening rotation, the U-shaped wire rod 4 slides sufficiently to the outer edge side opposite to the butting edge 5 side of the table plate 1 so that the left and right legs 3 are stably opened (C-shape viewed from the front). State).

The guide portion 6 is configured as a slide restricting portion 7 whose outer end is closed to restrict the sliding movement of the U-shaped wire 4. This slide restricting part 7
When the table board 1 is opened, the U-shaped wire 4 comes into contact with the U-shaped wire 4 so that the U-shaped wire 4 exerts a support function of supporting the left and right table boards 1.

The guide portion 6 has a wide portion 6b formed at an inner end thereof. The wide portion 6b is folded by rotating the left and right table boards 1 down and down with the leg portion 3 therebetween. It is configured as a space in which the torsion return force of the U-shaped wire 4 does not sufficiently act when superposed.

As shown in FIGS. 1 to 4, the leg portion 3 is formed by forming an appropriate metal pipe material 10 in a U-shape, and the upper end of each leg portion 3 is a leg. It is pivotally connected to a first hanging piece 8 of the mounting portion 2.

Each leg 3 has a hole 10 in its inner surface.
The hole 10a is for inserting and bendingly connecting a bent portion 4B 'provided in the U-shaped wire 4.

The U-shaped wire 4 is formed by forming an appropriate metal member as shown in FIGS. 1 to 5, and is formed by bending a connecting rod 4A and right and left positions of the connecting rod 4A. And a pair of U-shaped wires 4 are arranged on the back surface of the table 1 (guide portions 6 of the leg attachment portions 2) with the construction rod portions 4A being X-shaped, and , Each hanging rod 4B
Are pivotally attached to the legs 3 facing each other diagonally in the front-rear direction, and the legs 3 facing each other diagonally in the front-rear direction are connected by the pair of U-shaped wires 4 (FIG. 5). As shown in the figure, the pair of U-shaped wires 4 are not set in the same direction as the torsion directions of the left and right hanging rod portions 4B described later, and are configured as separate parts that exert different functions. .). A bent portion 4 is provided at the tip of each of the left and right hanging rod portions 4B.
B ′ is formed, and the bent portion 4B ′ is formed in the leg 3 through a hole.
It is configured so that it can be inserted into 10a and pivotally connected.

Therefore, the degree of opening of the U-shaped wires 4 connected to the legs 3 and arranged in an X-shape varies with the opening and closing rotation of the legs 3. When the opening movement reaches the limit, that is, the sliding movement of the U-shaped wire 4 moving along the guide part 6 of the leg attachment part 2 is regulated by the slide regulating part 7, so that the leg part 3 is opened in the opening direction. Is restricted.

The right and left hanging rods 4B of the U-shaped wires 4 are twisted in opposite directions to each other. When assembled between the U-shaped wires 4, the torsional return force of each of the U-shaped wires 4 is configured to exert an urging force to push and spread the left and right table boards 1.

More specifically, in the present embodiment, as shown in FIGS. 6 and 7, arrows a, a in the figures at the connecting portions of the left and right hanging rods 4B of the U-shaped wire 4 with the legs 3 are shown. When a force is simultaneously applied in the direction b (opening direction of the leg 3), the U-shaped wire 4
The whole is twisted, and the U-shaped wire 4 pushes the slide restricting portion 7 of the guide portion 6 facing the front and rear diagonal in the directions of the arrows a ′ and b ′ in the drawing by the torsion restoring force of the U-shaped wire 4. And a force for opening the table 1 (a force for maintaining the open state) is generated.

Further, in this embodiment, when the left and right table plates 1 are closed and rotated to be folded and overlapped or the left and right legs 3 are closed and rotated and overlapped, the torsional return force generated from the U-shaped wire 4 is obtained. Is the table board 1 within a predetermined rotation range.
When the left and right table plates 1 are further rotated downward beyond the rotation range, the U-shaped wire 4 abuts against the guide portion 6. 5, the opening angle between the X-shaped U-shaped wires 4 becomes narrower, and an environment is created in which the torsional return force is less likely to act gradually. When the installation position (contact position) is closer to the center of the U-shaped wire 4, the direction in which the force is applied changes, and the torsional return force is less likely to function as a force that pushes up the table plate 1. Restoring force is table board 1
Does not work well, and the table 1
Is configured to be kept in a folded state (see FIG. 8).

In this embodiment, since the left and right table boards 1 are folded and overlapped or the left and right leg portions 3 are constructed as described above.
When the left and right table plates 1 are rotated, the U-shaped wire 4 is twisted, and slides toward the butting edge 5 along the guide portion 6 against the torsional return force. By rotating the left and right table boards 1 downward, the torsional return force does not act on the table boards 1, and the state in which the table boards 1 are folded and overlapped with the legs 3 therebetween is maintained. .

Therefore, according to this embodiment, the U-shaped wire 4
By using an unprecedented epoch-making structure using a conventional structure, a good use state (a state in which the left and right table boards 1 are opened) and a folded state (the left and right table boards 1 are closed) in a table having a folding structure are used. State) can be reliably obtained.

Next, a second embodiment will be described.

In the second embodiment, as shown in FIG. 11, a chair which can be folded and overlapped so as to sandwich the leg portion 3 by sandwiching the leg portions 3 as the left and right support members 1 (cushions) as the support members 1 are vertically rotated. And a folding structure similar to that of the first embodiment (a folding structure using the U-shaped wire 4) is provided.

The rest is the same as in the first embodiment.

[0035]

Since the present invention is constructed as described above, it can be used in a good condition (the left and right support members are opened) and the folded state (the left and right support members are closed) in the support having the folding structure. ) Will be obtained,
In addition, because of its simple structure, it is excellent in mass production and cost, and is a revolutionary foldable support such as a foldable table or chair, which has extremely high commercial value.

According to the second aspect of the present invention, in addition to the functions and effects of the first aspect of the present invention, an epoch of extremely high commercial value, such as a simpler structure and superior mass production and cost. It becomes a supporting body such as a typical foldable table and chair.

According to the third aspect of the present invention, in addition to the functions and effects of the first and second aspects of the present invention, the sliding movement of the U-shaped wire is restricted so that the table plate and the legs are opened. It is an epoch-making foldable support such as a foldable table or chair, which has an extremely high commercial value such that a good use state can be obtained while reliably maintaining the state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment.

FIG. 2 is a perspective view showing the first embodiment.

FIG. 3 is a front view showing the first embodiment.

FIG. 4 is a schematic operation explanatory view of the first embodiment.

FIG. 5 is an explanatory diagram of a main part according to the embodiment.

FIG. 6 is an explanatory diagram of a main part according to the embodiment.

FIG. 7 is a bottom view illustrating the first embodiment.

FIG. 8 is a schematic operation explanatory view of the first embodiment.

FIG. 9 is a schematic operation explanatory view of a main part according to the first embodiment.

FIG. 10 is a schematic operation explanatory view of a main part according to the embodiment.

FIG. 11 is a perspective view showing a second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 support member 2 leg attachment part 3 leg part 4 U-shaped wire 4A erection rod 4B hanging rod 4B 'bent part 5 butting edge 6 guide part 7 slide regulating part

Claims (3)

[Claims] 1. A left and right support member, which is folded in two, is provided with a leg attachment portion at the front and rear of the back side of the abutting side, respectively, and the left and right support members are pivotally connected to each other to connect the left and right support members to each other. In a supporting body such as a foldable table or chair, the legs are pivotally attached to the leg mounting portions, and the left and right support members are vertically rotated to be able to fold and overlap so as to sandwich the legs. A bridging rod portion of a U-shaped wire having a property is disposed along the back surface of the support member so as to intersect with the abutting edge of the support members, and ends of the front and rear hanging rod portions are diagonally formed in front and rear, respectively. This U-shaped wire is connected to the opposing legs, and the U-shaped wire is disposed on the back surface of the support member in an X shape, and the legs that oppose each other diagonally in the front-rear direction are connected to each other. A guide that guides the slide toward the back of the member By providing the right and left support members by folding and superimposing the left and right support members or by superposing the left and right leg members, the U-shaped wire is twisted with the rotation of the left and right support members, and the torsion return force is generated. In opposition to this, the torsional return force does not act on the supporting member by sliding the left and right supporting members down and rotating along with the butting edge along the guide portion, and the supporting member is sandwiched between the legs. A support such as a foldable table or chair, wherein the support is configured to maintain a folded state. 2. The U-shaped wire rod is bent at the tip of a hanging rod portion, and the bent portion is pivotally attached to each of the leg portions facing each other diagonally in the front-rear direction. 2. A support body such as a foldable table or chair according to claim 1, wherein said support body is connected between said sections. 3. A guide portion provided on each of the leg attachment portions,
The foldable member according to any one of claims 1 and 2, further comprising a slide restricting portion that restricts the sliding movement of the U-shaped wire toward the outer edge of the support member in the direction of the back surface of the support member. Supports such as tables and chairs.