JP2507297Y2 - Folding chair - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding chair used in camping and the like.

[0002]

BACKGROUND OF THE INVENTION Various types of lightweight and compact folding chairs are used in campgrounds. These folding chairs come in a variety of configurations. For example, a seat surface portion, a front leg portion rotatably attached to the seat surface portion,
A rear leg portion that is rotatably connected to the front leg portion,
There is a folding chair having a fixing member for fixing the rear leg portion to the seat surface portion. When the rear leg part is fixed to the fixing member, the front leg part and the rear leg part are crossed to be in a usable state, and when the rear leg part is removed from the fixing member, the front leg part and the rear leg part become substantially parallel to the seat surface part. It will be folded.

[0003]

However, the conventional folding chair as described above has the following problems. That is, if the rear leg part comes off from the fixing member for some reason during use, the weight of the user causes the front leg part and the rear leg part to be instantly folded and the space between the front leg part and the rear leg part is There is a risk of an accident in which the user's finger or the like is caught. Here, it suffices if the structure of the rear leg portion and the fixing member is such that they cannot be easily detached, but if this is done, there is the problem that assembly and folding become extremely difficult. In addition, there is a problem that it is easy to pinch a finger between the front leg and the rear leg even when folded.

The present invention has been made in view of the above circumstances, and can be easily assembled and folded, and even if the rear leg part comes off from the fixing member during use, the rear leg part is folded and the user can fold it. The purpose is to provide a folding chair that does not cause an accident such as pinching a finger.

[0005]

[Means for Solving the Problems] Folding chair according to the present invention
The child is rotatably mounted on the seat surface and the back side of the seat surface.
Rotate freely with the attached front leg and this front leg
The connected rear leg and the upper edge of this rear leg
Fixed to fit the rear leg to the back side of the seat
And a rear leg portion and a front leg portion in the rear leg portion.
A safety ring that can slide to the upper edge side of the intersection of
It is fitted.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of the folding chair in use, as seen from below, FIG. 2 is a sectional view of the folding chair in use, FIG. 3 is a rear view of the folding chair in folding state, and FIG. 6 is a drawing showing a safety ring of another shape,
The same figure (A) is a perspective view and the same figure (B) is a side view showing the effect.

The folding chair according to this embodiment has a seat surface portion 1
00 and rotatably mounted on the back side of the seat 100.
The crossed front leg 200 and the front leg 200
A rear leg 300, which is rotatably connected and has a substantially rectangular shape, and
The upper side portion 340 of the rear leg portion 300 is fitted so that the rear leg portion 3
Fixing member 114 for fixing 00 to the back surface side of the seat portion 100
And the rear leg portion 300 includes a rear leg portion 300 and
Sliding to the upper side 340 side from the intersection with the front leg 200
A movable safety ring 400 is fitted.

The seat surface portion 100 is composed of a frame portion 110 and a plate portion 120 attached to the frame portion 110. The frame part 110 has an outer frame part 111 formed by bending a steel pipe into a substantially square shape, and a pair of substantially strip-shaped support parts 112 bridged between the opposite sides of the outer frame part 111. ing. The plate portion 120 is mounted on the frame portion 110 by being placed on the support portion 111.
In this case, of course, for the sake of safety, it is necessary not to expose a sharp head such as a screw on the surface of the plate portion 120.

On one end side of the support portion 112, a front leg portion holding portion 113 is formed by punching out a part of the support portion 112 to form a substantially gutter-like curved shape. Further, a fixing member 114 is formed on the other end side of the support portion 112. This fixing member 114 is a support part.
A part of 112 is punched out and bent into a hook shape. In the drawing, 115 is a stopper that prevents the rear leg portion 300 from being accidentally detached from the fixing member 114. The plate portion 120 is made of a light and strong flat plate in conformity with the shape of the frame 110.

On the other hand, the front leg portion 200 is formed by bending a steel pipe into a U-shape in which a tip portion 210 is bent inward, and the tip portion 210 is inserted into the front leg holding portion 113. ing. Further, a screw (not shown) for limiting the amount of insertion into the front leg holding portion 113 is screwed into the front end portion 210 of the front leg portion 200.

The rear leg portion 300 is similar to the front leg portion 200.
A steel pipe is bent to form the front leg.
The difference from 200 is that it is formed in a substantially square shape. Ma
Also, the rear leg portion 300 fits inside the front leg portion 200.
It is set one size smaller than the front leg 200
I have. The upper side portion 3 which is the upper horizontal portion of the rear leg portion 300
40 is fitted in the fixing member 114. What
The thickness of the steel pipe that makes up this rear leg 300
Corresponds to the size of the fixing member 114.

The front leg portion 200 and the rear leg portion 300 described above are rotatably connected by a pin 500 at an intermediate portion between the vertical side portions 220 and 320. Therefore, the rear leg 300 is
It is in a state of crossing.

The rear leg 300 has a ring-shaped safety relief.
The ring 400 is slidably fitted. This safety list
If the rear leg portion 300 of the ring 400 is abruptly
The rear leg 300 may be folded even if it is detached from
It is something that should not be done. In addition, this safety ring 40
0 is the upper half of the rear leg 300, that is, the rear leg 300
Fits on the upper side 340 side of the intersection of the front leg 200 and
It is embedded.

Further, the lower side portion 230 of the front leg portion 200 and the rear leg portion
A chain 600 is stretched between the lower side 330 of the 300. The chain 600 is an expansion preventing member that prevents the front leg 200 and the rear leg 300 from expanding too much over a predetermined angle, and screws 610 attached to the lower sides 230 and 330 of both legs 200 and 300. Are linked to.

Next, a folding procedure of the folding chair having the above-mentioned structure will be described. When the folding chair is in use, as shown in FIGS. 1 and 2, the front leg portion 200 and the rear leg portion 300 intersect with each other, and the upper side portion 340 of the rear leg portion 300 is fitted to the fixing member 114. I'm stuck. Further, the safety ring 400 is located at the intersection of the front leg 200 and the rear leg 300.

To fold the folding chair in this state, the upper side 340 of the rear leg 300 is removed from the fixing member 114, the safety ring 400 is moved to the upper side 340, and the rear leg 300 is centered around the pin 500. The upper leg 340 to the front leg 20
The tip end portion 210 of 0, that is, the front leg holding portion 113 side is rotated. Then, the rear leg portion 300 fits inside the front leg portion 200 and is folded as shown in FIG. When assembling, the procedure reverse to the above may be performed.

During use, that is, when the user is sitting, it is assumed that the rear leg portion 300 is disengaged from the fixing member 114 despite the presence of the stopper 115 by some kind of momentum. However, even if it tries to spread in the direction of arrow A shown in FIG. 2, it is blocked by the chain 600. On the other hand, during use or folding
Even if the rear leg 300 rotates in the direction opposite to the arrow A, the safety ring 400 is caught between the front leg 200 and the rear leg 300 and is not closed. That is, it is possible to prevent an accident that a finger is caught at this time.

In the embodiment described above, the front leg 200 and the rear leg 200
Although 300 is described as a bent steel pipe, the intersection, that is, the vertical side portion 22 of both legs 200, 300 is described.
It is also possible to cover the middle part of 0, 320 with another more rigid tubular sleeve. This makes it possible to prevent twisting of the front leg part 200 and the rear leg part 300 by the safety ring 400, so that the safety is further enhanced.

Although the safety ring 400 is a simple ring-shaped member, it may have a shape in which two truncated cones are joined on the bottom side as shown in FIG. 4 (A). When such a safety ring 400 is used, when it is folded, as shown in FIG.
Since it makes surface contact with the 220, the front leg 200 is not twisted, which is more safe. Note that the safety ring 400 in this case must be formed of hard rubber or the like having a certain degree of flexibility so that it can pass through the corner between the vertical side 320 and the upper side 340 of the rear leg 300.

Further, although the seat surface portion 100 has the plate portion 120, it may be replaced with cloth or the like. In this case, the cloth or the like is attached by sewing the end portions of the cloth around the outer frame portion 111 of the frame portion 110. Further, in this case, the supporting portion 112 is not necessary, and the outer frame portion 111 is provided with the front leg holding portion 113 and the fixing member 114.

[0021]

The folding chair according to the present invention includes a seat surface portion, a front leg portion rotatably attached to the seat surface portion,
A rear leg portion that is rotatably connected to the front leg portion,
A fixing member for fixing the rear leg portion to the seat surface portion is provided, and a slidable safety ring is fitted in the rear leg portion. Therefore, even if the rear leg part comes off from the fixing member during use, the safety ring will be caught between the rear leg part and the front leg part, so that an accident such as the user's finger is caught between the front leg part and the rear leg part. It is very safe as it can be prevented.

[Brief description of drawings]

FIG. 1 is an external perspective view of a folding chair according to an embodiment of the present invention in a use state.

FIG. 2 is a sectional view of the folding chair in use.

FIG. 3 is a rear view of the folding chair in the folded state.

4A and 4B are drawings showing a safety ring having another shape, in which FIG. 4A is a perspective view and FIG. 4B is a side view showing its effect.

[Explanation of symbols]

 100 Seat surface 114 Fixing member 200 Front leg 300 Back leg 400 Safety ring

Claims (4)

(57) [Scope of utility model registration request] 1. A seating surface portion and a rotating self
The front leg attached to the vehicle and the
A rear leg part that is movably connected and has a substantially rectangular shape, and this rear leg part.
The upper edge of the seat fits and the rear leg is fixed to the back side of the seat
And a fixing member for fixing the rear leg to the rear leg.
It is slidable to the upper edge side of the intersection between the front leg and the front leg.
Folding chair characterized by having all rings fitted . 2. The intersection of the front leg and the rear leg is different from the other.
The folding chair according to claim 1, wherein the folding chair is configured to be stronger than the portion . 3. The folding chair according to claim 1, wherein the safety ring has a shape in which two truncated cones are joined on the bottom side. 4. An expansion prevention member for preventing the front leg and the rear leg from expanding beyond a predetermined angle is connected between the lower sides of the front leg and the rear leg. The folding chair according to claim 1.