JPS6130539Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a leg assembly structure for a folding chair or the like.

In general, a folding chair constructed of a frame made of pipes, etc. has front legs and back legs that intersect in an approximately X shape when viewed from the side, and the legs are pivoted at the intersection with a pin so that the legs can be opened and closed. It is formed. In this case, the lower ends of both the front and rear legs that touch the ground are connected and integrated by the horizontal bar, so
When the chair is folded, both horizontal bars collide with each other, making a loud noise.Furthermore, even when folded, the chair is quite thick and takes up a lot of space when stacked on top of each other to organize or store.

The present invention provides a leg assembly structure for folding chairs, etc., which eliminates such conventional drawbacks.One of the legs that intersects in an approximately A ring-shaped member with a fitting pin is fitted onto the other leg so that the leg can slide as the chair is opened and closed, and the leg contacts the ring-shaped member when the chair is opened, preventing the leg from opening any further. The gist of this is that a stopper piece is attached that functions as follows.

Next, an embodiment of this invention will be explained based on the drawings. Reference numeral 1 denotes a shaped front leg, and a backrest B is attached to the upper end of the front leg. Reference numeral 2 denotes a rear leg formed in the same shape as the front leg, and its width is formed to be smaller than the width of the front leg so that it fits inside the front leg 1. Reference numeral 3 denotes a ring-shaped member that is fitted onto the rear leg 2 so that the rear leg can slide on it.A metal ring 3a is covered with a synthetic resin 3b, and a pin 4 is fixed to the ring 3a so that the rear leg can slide on the side. This pin 4 is rotatably inserted into a hole 1a provided in the front leg 1.
That is, the front leg 1 and the rear leg 2 intersect in a substantially X shape via the ring-shaped member 3, and the front leg 1 and the rear leg 2 rotate with respect to each other using the pin 4 as a fulcrum, and the rear leg 2 crosses the ring-shaped member 3. It is designed to be able to slide in the direction of its axis. 5 is a semi-circular stopper piece fixed to the rear leg 2 with a stopper 6;
When it comes into contact with the ring-shaped member 3, the rear leg 2 is prevented from sliding downward, and as a result, the opening angle with respect to the front leg 1 is restricted, and it will not open any further. C is a seat member (seat), the front parts of both sides are pivoted 7 to the upper ends of the rear legs 2, and the rear parts of both sides are pivoted 8 to the front legs 1, so that the chair is held almost horizontally when in use. is now being maintained.

When the chair configured in this manner is folded, the seat member C rotates backwards using the pivot 8 as a fulcrum, and as a result, the rear legs 2 slide on the ring-shaped member 3 without being pulled up, and the ring-shaped The member 3 also rotates backward using the pin 4 as a fulcrum (axis), and its axis gradually approaches the front leg and eventually becomes parallel to the front leg. As a result, the rear leg 2 is in a position parallel to the front leg 1, and since the rear leg 2 has slid upward on the ring-shaped member 3, its horizontal bar 2a is higher than the horizontal bar 1b of the front leg 1, and the rear leg 2 is in a position parallel to the front leg. It will fit snugly inside 1. At this time, the seat member C is attached to the backrest B
It is advantageous to design the front edge of the seat member C to be located below the lower edge of the backrest B so as not to collide with the seat member C, since the entire seat becomes extremely flat when folded.

On the other hand, when in use, the seat member C can be rotated forward in the opposite direction, and both legs are opened and the rear leg 2 is slid downward, so that the stopper piece 5 comes into contact with the ring-shaped member 3 as described above. The sheet member C is brought to a substantially horizontal position and is ready for use.

As explained above, according to the leg assembly structure according to the present invention, it is possible to store one leg so that the other leg fits snugly inside the other leg, so the legs do not collide with each other when folded. This provides excellent effects such as saving space for organizing and storing chairs, and eliminating collision noise.

In addition, although the example of a chair was shown in the said Example, this invention is not limited to this, but can be widely applied as the leg of other foldable furniture.

[Brief explanation of drawings]

Fig. 1 is an external view of a folding chair showing an embodiment of the present invention, Fig. 2 is an explanatory diagram showing part A in Fig. 1 enlarged, Fig. 3 is a sectional view of the main part, and Fig. 4 is a folding chair. FIG. 1... Front leg, 2... Back leg, 3... Ring-shaped member, 4... Pin, 5... Stopper piece.

Claims (1)

[Scope of utility model registration request] In the legs of a folding chair or the like that intersect in an approximately X shape, a hole is provided in one leg of the intersection part, and a ring-shaped member having a pin rotatably fitted in the hole is provided in the other leg. The other leg is fitted so that it can slide, and a stopper piece is attached to an upper key point of the other leg, and when the leg is opened, the stopper piece slides downward as the other leg slides. The stopper piece comes into contact with the ring-shaped member and regulates the opening angle of both legs, while when the legs are opened, the stopper piece separates from the ring-shaped member as the other leg slides upward, keeping both legs substantially parallel. A leg assembly structure for folding chairs, etc., characterized by being able to be stacked on top of each other.