JP2733038B2 - Folding chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding chair which can be folded and stacked.

[0002]

2. Description of the Related Art As a folding chair of this kind, a front frame having front legs extending downward continuously from an upper end portion having a backrest, and an upper end portion can abut on a predetermined position on a rear surface of the front frame. 2. Description of the Related Art There is known a rear leg, a seat pivotally attached to the rear leg and the front frame, and a link mechanism for connecting the front frame and a portion near the upper end of the rear leg. In such a chair, the upper end of the rear leg is brought into contact with the predetermined position of the front frame to establish a use posture, and when not in use, the front end of the seat is rotated rearward to rotate the upper end of the front frame and the rear leg. The contact between the front frame and the rear leg is released by releasing the contact with the section, and the storage position is set.

[0003]

However, in such a configuration, the front frame and the rear leg substantially overlap each other, and the front frame and the upper end of the rear leg are separated from the storage posture to the use posture. When changing the chair, immediately before the chair is completely in the use position, that is, the upper end of the rear leg does not contact the predetermined position of the front frame, and a slight gap is formed between the upper end of the rear leg and the front frame. The occupant may sit on a chair when it is awake. In such a case, the chair can be brought into the use posture by sitting on the chair, but at this time, if a finger or clothing is unknowingly inserted near the upper end of the rear leg or near a predetermined position of the front frame, the chair may become in use. There is a possibility that a finger or clothing may be pinched when the user takes a use posture. In addition, when the chair is lifted, such as when trying to move the chair while sitting on the chair, the front end of the seat pivots backward, and the rear leg and the front frame temporarily move to the predetermined position. Contact may be broken. Even in such a case, if a finger or clothing is unintentionally hanged on a predetermined position, if the user sits in that state, the finger or clothing may be pinched.

An object of the present invention is to eliminate such a risk in a chair as much as possible and to reduce the probability of occurrence of an unexpected accident as much as possible.

[0005]

Each invention of the present Application SUMMARY OF THE INVENTION In order to achieve the above object, in which took measures as described below. That is, folding chair of <br/> invention according to claim 1 of the present patent application has a front frame made of round pipe made comprising legs before extending downward continuously to an upper end portion having a backrest, the upper portion A rear leg capable of abutting a predetermined position on a rear surface of the front frame, a seat pivotally attached to the rear leg and the front frame, and a link member connecting the front frame and a portion near the upper end of the rear leg; In a chair that is used by contacting the upper end of the leg with the predetermined position of the front frame, the upper and lower ends of the rear leg and the front frame at the predetermined position are allowed to contact and separate from each other, and the vicinity of the predetermined position generated when the chair is separated from the front frame It is provided with a permeation prevention member for preventing foreign material from entering the gap, invasion
Intrusion prevention member surrounds the space below the predetermined position of the front frame
With a cover that fits into the side of the front frame at the lower end.
Stacked folded chairs with matching notches
Chair notch of stacking chair when stacking
Engage with the child's front frame while prohibiting horizontal movement
Characterized in that it.

Further, the folding according to the invention according to claim 2 of the present application.
The armchair extends downward continuously to the upper end with the backrest.
A front frame having a lengthened front leg, and
A rear leg capable of abutting a predetermined position on a rear surface of the front frame;
A seat pivotally attached to the legs and the front frame, and the front and rear frames
And a link member for connecting the upper end vicinity of the leg, after
Use the upper end of the leg in contact with the specified position on the front frame.
In the chair to be used, the upper end of the rear leg at a predetermined position
Allows contact and separation with the front frame and occurs when separated
Intrusion to prevent foreign matter from entering the gap near the predetermined position
An intrusion prevention member is provided, and the intrusion prevention member has one end at the other end.
With a bent part that bends in one direction, with one end inserted into the front frame
To extend from the specified position on the front frame,
A slidably inserted into the rear leg from the upper end of the leg
There is a feature .

[0007] Further, according to the third aspect of the present invention, the folding of the present invention.
The folding chair should be continuous downward at the upper end with the backrest
Front frame with extended front legs and front end
A rear leg capable of abutting a predetermined position on a rear surface of the front frame;
The seat pivotally attached to the rear legs and front frame, and the front frame
A link member connecting the vicinity of the upper end of the rear leg,
Make the upper end of the rear leg abut on the predetermined position of the front frame
In the chair to be used, the upper end of the rear leg at the specified position
Is allowed to move toward and away from the front frame.
To prevent foreign matter from entering the gap near the predetermined position.
An intrusion prevention member is provided.
A first fixing member attached to the rear leg, and a first fixing member attached to the upper end of the rear leg.
A second fixing member and an upper end fixed to the first fixing member, and a lower end fixed to the first fixing member.
It is made of a stretchable elastic material fixed to the second fixing material,
When used, the second fixing material contacts the specified position on the front frame
It is characterized by that.

[0008]

With this structure, the upper and lower ends of the rear legs can be freely moved in and out of contact with the front frame. Clothing and the like can be prevented from entering. Therefore, for example, when the chair in use is lifted in order to move, the rear leg tilts forward, the contact support of the front frame by the upper end of the rear leg is temporarily released, and the upper end of the rear leg A gap may be formed between the part and a predetermined position in the front frame, but even in such a case, no hand or clothing is applied to the gap. Thus, the probability of occurrence of an unexpected accident such as putting a hand or clothes in such a gap can be reduced as much as possible.

[0009] In the invention according to claim 1 of the present application, all SANYO cover shape surrounding the lower space of the predetermined position of the intrusion prevention member is a previous frame, the lower space intrusion prevention member in a predetermined position in the previous frame For example, even if the user tries to move the chair and puts his / her hand on the front frame or the rear leg, the hand does not reach near a predetermined position where the upper end of the rear leg and the front frame abut. Also, when the chair is lifted to move the chair in use, the rear leg tilts forward, the contact support of the front frame by the upper end of the rear leg is temporarily released, and the upper end of the rear leg and the front frame are moved. There may be a gap between the predetermined position. However, this gap is not exposed because it is covered by the intrusion prevention member. That is, the upper end of the rear leg is kept covered by the intrusion prevention member. Therefore, it is possible to prevent the user from unintentionally touching the vicinity of the predetermined position, and it is possible to reduce the probability of occurrence of an unexpected accident as much as possible.

Further, in the invention according to claim 2 of the present application ,
Intrusion prevention member, extending from a predetermined position of the previous frame state, and are not the lower end portion is inserted from the upper end of the rear leg slidably in the rear leg, the upper end of the rear legs from the previous frame Even when separated, when the upper end of the rear leg separates from the front frame, an intrusion prevention member extending from the front frame according to the separation distance is interposed between the contact positions of the front frame and the rear leg. Therefore, a finger or clothes cannot enter the gap formed between the front frame and the upper end of the rear leg. Therefore, it is possible to prevent unintentional access to a predetermined position when sitting after moving in a state where the seat is lifted forward from the sitting state, and it is possible to reduce the probability of occurrence of an unexpected accident as much as possible. it can.

In addition, in the invention according to claim 3 of the present application ,
Intrusion prevention member has elasticity, one end of which is attached to a predetermined position, Ru der which the other end is being attached to the upper end of the rear leg
Therefore , in any case, the intrusion prevention member is interposed between the upper end portion of the rear leg and the predetermined position of the front frame, and no intervening gap is formed. That is, for example, when the chair is lifted to move from the use state, the seat tilts backward, the contact support of the front frame by the upper end of the rear leg is temporarily released, and the upper end of the rear leg is moved forward. Even when moving away from the predetermined position of the frame, the intrusion prevention member has one end attached to the predetermined position of the front frame and the other end attached to the upper end of the rear leg. As it moves away from a predetermined position with respect to the frame, it extends to extend the space where it cannot intervene. Therefore, the predetermined position of the front frame is not exposed, and it is possible to prevent the user from unintentionally engaging the predetermined position where the finger or the like may be pinched, and to inadvertently pinch the finger or clothes in the gap. Will not be. Thus, the probability of occurrence of an unexpected accident can be reduced as much as possible.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the folding chair 1 has a front frame 4 having a front leg 3 extending continuously downward from an upper end having a backrest 2, and an upper end 5a having the front frame 5a. A rear leg 5 capable of abutting a predetermined position P on the rear surface of the rear frame 4; a side surface near the rear edge is rotatably supported by the rear leg 5; A seat 6 movably supported, a link member 10 connecting the front frame 4 and a portion near the upper end of the rear leg 5,
The upper end 5a of the rear leg 5 at the predetermined position P and the front frame 4
The predetermined position P generated when the contact and separation operation is allowed
And an intrusion prevention member 7 for preventing intrusion of foreign matter into a nearby gap. The folding chair 1 is used with the upper end 5a of the rear leg 5 in contact with a predetermined position P on the front frame 4 and the front end of the seat 6 is rotated in two directions of the backrest to thereby allow the front frame 4 and the rear frame 4 to rotate. The legs 5 can be substantially overlapped.

The front frame 4 is made of a round steel pipe.
A side surface of a seat frame 9, which includes a front leg 3 located below the seat 6 and a back support rod 8 located above the seat 6, and forms a side surface of the seat 6, is rotatable via a link member 10. I support it. For example, the front legs 3 are connected to each other at a substantially central portion in the height direction by a horizontal rod 11, and a cap 12 made of synthetic resin is fitted to a lower end mounted on the floor surface.
The back support rod 8 has an upper end formed in a substantially U-shape and a bent end bent further rearward.
Has been erected. The back support rod 8 is provided with holes (not shown) for mounting the intrusion prevention member 7 on both side surfaces having a height substantially equal to the predetermined position P with which the rear leg 5 abuts in use.

The rear leg 5 is formed by bending a single round steel pipe into a substantially U-shape, and forms a base rod 13 mounted on the floor at the bent end thereof. Is fitted with a receiving cap 14 made of synthetic resin. Hind legs 5
Is connected to the front frame 4 via a link member 10 and is connected to the seat frame 9 via a bracket 9a.
In use, the upper end of the receiving leg cap 14 is in close contact with a predetermined position P on the rear surface of the back support rod 8 to support the front frame 4 in contact.

The lower portion of the leg cap 14 is fitted into the round pipe of the rear leg 5, and the upper end thereof is in close contact with the front frame 4 to support the front frame 4. Further, the receiving leg cap 14 prevents metal from contacting when the front frame 4 and the rear leg 5 abut.

The seat 6 has a cushion material attached on a seat plate,
It comprises a seat body surrounding the cushioning material with a covering material, and a seat frame 9 supporting the seat body. The structure of the seat 6 and the backrest 2 may be the same as those widely known in the art.

The link member 10 is operated to move the lower end of the rear leg 5 closer to the lower end of the front leg 3 in conjunction with the seat 6 when the seat 6 is rotated. Each is mounted on the rear leg 5. That is, as shown in FIG. 2, one end of the link member 10 is
Is pivoted slightly below the predetermined position P, and the other end is
And is slightly pivoted below the upper end 5a.
It is a plate-like member that connects the rear leg 5 and the rear leg 5.

As shown in FIGS. 3 and 4, the intrusion prevention member 7 is a cover-like member that surrounds a space below a predetermined position P of the front frame 4, and is attached to the back support rod 8 to receive the receiving leg in use. From the upper end 5a of the rear leg 5 with the cap 14 fitted,
A main body 15 capable of covering a predetermined length, for example, a thickness of about two fingers down to a lower portion, and a hole protruding from a predetermined position on the inner surface of the main body 15 and formed in the back support rod 8. A projection 16 to be engaged and a flange 18 protruding inward on the inner surface of the main body 15 and abutting against the back support rod 8 to prevent the main body 15 from rotating in the vertical direction are integrally formed of synthetic resin. It is. That is,
The main body 15 is opened upward, forward and downward, into which the upper end portion 5a of the rear leg 5 can be inserted from below, and when the posture of the chair 1 is changed between the use state and the storage state, the rear leg 5 is inside.
Is pivotable. The upper end of the main body 15 is in close contact with the back support rod 8, and the lower part covers the rear and upper sides of the hole of the back support rod 8. It covers from above by the length, that is, the length of the main body 15. Further, the main body 15 has a side surface shape of the back support rod 8 at the lower end thereof so as to be able to engage with the side surface of the back support rod 8 of the stacked chairs 1 and support the stacked chairs 1 when the chairs 1 are stacked. A notch 17 corresponding to the circular arc of the round steel pipe is formed.

In such a configuration, in use, when the seat 6 folded at the time of storage is pushed down in the front lower direction, as shown in FIGS.
The upper end 5a of the rear leg 5 in which the lower end of the rear leg 5 is wide open in the front-rear direction and the receiving leg cap 14 is fitted supports the back support rod 8, and the rear leg 5 and the front frame 4 tilt the seat 6 slightly rearward. It is in the form of holding in a substantially horizontal state. At this time, the rear leg 5 is moved from the upper end portion 5a of the rear leg 5 by the penetration preventing member 7.
The lower part of the rear leg 5, that is, the upper end of the receiving cap 14, can be moved even when the chair 1 is moved to reach the front frame 4 or the rear leg 5. It will not take. In addition, when the chair 1 is lifted to move in the use state, the front end of the seat 6 tilts toward the upper end side of the front frame 4 as shown in FIG. The upper end 5 of the rear leg 5 is temporarily released and the receiving cap 14 is fitted.
In some cases, a gap may be formed between a and the back support rod 8. However, when the width is smaller than the length of the intrusion prevention member 7, the gap is covered with the intrusion prevention member 7 and is not exposed. That is, the state in which the upper end 5a of the rear leg 5 is covered with the intrusion prevention member 7 is maintained. Therefore, it is possible to prevent the user from unconsciously touching the contact position between the front frame 4 and the rear leg 5, and it is possible to reduce the probability of occurrence of an unexpected accident as much as possible. Further, as shown in FIG. 6, the rear legs 5 are tilted forward, and the lower ends of the front legs 3 and the rear legs 5 approach each other, so that the gap between the back support rod 8 and the upper end 5 a of the rear legs 5 is reduced. When the width exceeds the length of the intrusion prevention member 7, the upper end 5 a of the rear leg 5 is not covered with the intrusion prevention member 7. That is, a gap into which a finger can be inserted is formed between the upper end 5a of the rear leg 5 and the lower end of the intrusion prevention member 7, and the upper end 5a of the rear leg 5 is exposed. However, in such a state, the seat 6 is inclined backward so sharply that it is impossible to seat. Therefore, since it is impossible for the user to sit on the seat 6 with the finger or clothes inserted in the gap, the finger or clothes or the like is not carelessly pinched in the gap.

On the other hand, when the folding chair 1 is folded for storage, as shown in FIG.
And the seat 6 substantially polymerize. When the chairs 1 folded for stacking are placed on the floor, the notch 17 of the intrusion prevention member 7 is in a state of facing upward.

With such a configuration, when the chair 1 is placed so that the front frame 4 of the stackable chairs 1 abuts against the cutouts 17 of the chairs 1 to be stacked, the cutouts 17 of the chairs 1 to be stacked become Since the chairs 1 are engaged with the front frame 4 of the stacked chairs 1 in a state where movement in the left-right direction is prohibited, the stacked chairs 1 are less likely to shift in the left-right direction.

Next, another embodiment of the present invention will be described with reference to the drawings.

The folding chair 101 of this embodiment has the intrusion prevention member 7 attached to the front frame 4 of the above embodiment.
Instead, the rear end of the front frame 104 extends from a position where the upper end 105a of the rear leg 105 abuts, and the lower end is slidably inserted into the rear leg 105 from the upper end 105a of the rear leg 105. The intrusion prevention member 107 is attached to the back support rod 108 which forms the front frame 104 by the back support rod 108 and the front leg 103 and the receiving leg cap 114 which is fitted to the upper end portion 105a of the rear leg 105. Holes 108a and 114a to be attached are formed. Since the other configuration is the same as that of the above embodiment, the same components are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

The intrusion prevention member 107 has a bent portion 107c at one end 107a, which is bent in the direction of the other end 107b. The other end 107b is linear and has a length that does not fall out of the rear leg 105 when folded. A cane-shaped synthetic resin, one end 107a of which is bored in a back support rod 108
a, the bent portion 107c is hooked on the front frame 104, and the other end 107b is inserted into the upper end portion 105a of the rear leg 105 so as to be slidable up and down. That is, as shown in FIG. 10, a vertically long slot 114a is formed on the surface of the receiving leg cap 114, which is fitted to the upper end portion 105a of the rear leg 105, in contact with the front frame 104. The prevention member 107 is slidably inserted into the elongated hole 114a.

In such a configuration, in use, when the seat 6 folded during storage is pushed forward and downward, as shown in FIGS.
5 and the lower end of the receiving cap 11
The upper end portion 105a of the rear leg 105 into which the rear leg 4 is fitted contacts and supports a predetermined position of the front frame 104, and the rear leg 105 and the front frame 104 hold the seat 6 in a substantially horizontal state inclined slightly backward. Become. At this time, the intrusion prevention member 107
Is built in the front frame 104 and the rear leg 105 and is not exposed.

When the chair 101 is lifted, for example, when the chair 101 is moved in use, the front end of the seat 6 tilts toward the upper end of the front leg 103, as shown in FIG.
The contact support of the front frame 104 by the receiving leg cap 114 is temporarily released, and a gap is generated between the upper end portion 105a of the rear leg 105 fitted with the receiving leg cap 114 and the predetermined position P on the front frame 104. There is. But,
In this gap, the rear leg 10 extends from the front frame 104.
The intrusion prevention member 107 reaching up to 5 is interposed. That is, the intrusion prevention member 107 has one end 107a hooked into the hole 108a formed in the front frame 104, and the other end 107a.
b is the elongated hole 11 of the receiving leg cap 114 above the rear leg 105.
4a, the hole 108a of the front frame 104
From the front frame 104 to the upper end 105a of the rear leg 105.
05a, a state in which clothes or the like cannot enter the gap formed. Further, since the intrusion prevention member 107 is interposed and exposed in the gap formed between the front frame 104 and the upper end portion 105a of the rear leg 105, the seated person can adjust the contact position between the rear leg 105 and the front frame 104. It becomes easy to recognize, and it can call attention during handling. Therefore,
When sitting after moving the seat 6 with the seat 6 lifted forward from the sitting state, it is possible to prevent the user from unintentionally touching the contact position between the front frame 104 and the rear leg 105, and to prevent an accident from occurring. It can be reduced as much as possible.

On the other hand, the folding chair 10 is used for storage.
1 is folded, as shown in FIG.
4, the rear leg 105 and the seat 6 substantially overlap. In this case, the intrusion prevention member 107 in which one end 107a is hooked on the front frame 104 and the other end 107b is slidably inserted into the elongated hole 114a of the rear leg 105, the other end 107b side slides into the elongated hole 114a while The portion between the upper end portion 105a of the rear leg 105 and the hole 104a of the front frame 104 is exposed by being pulled out from the inside of the leg 105.

The present invention is not limited to the embodiment described above.
07B, as shown in FIG. 13, the shape of the tip 107Aa may be spherical, and as shown in FIG.
07Ba may be flattened and formed to be flat.
When the tips 107Aa and 107Ba have such a shape, the intrusion prevention members 107A and 107B
It is difficult to escape from 4. Also, the intrusion prevention members 107, 10
The material of 7A and 107B is not limited to synthetic resin, but may be metal.

Next, still another embodiment of the present invention will be described with reference to the drawings.

In the folding chair 201 of this embodiment, the intrusion prevention member 207 has its upper end 207a attached to a predetermined position P, and its lower end 207b attached to the upper end 205a of the rear leg 205. And the upper end 205a of the rear leg 205 has elasticity to form a space that cannot intervene, and the back support rod 208 is substantially equal to the position P where the rear leg 205 abuts in use. Holes (not shown) for attaching the intrusion prevention member 207 are formed on both sides of the height, and a second fixing member 214 made of a synthetic resin described later is formed on the upper end side of the rear leg 205. Are fitted. Since the other configuration is the same as that of the above embodiment, the same components are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

As shown in FIGS. 17 and 18, the intrusion prevention member 207 includes a first fixing member 215 attached to the front frame 204 and a second fixing member attached to the upper end 205a of the rear leg 205. 214 and a tubular elastic member 216 whose upper end is fixed to the first fixing member 215 and whose lower end is fixed to the second fixing member 214 and which can expand and contract in the longitudinal direction.

More specifically, the first fixing member 215 is formed as shown in FIG.
As shown in FIGS. 19 and 20, a side wall 219 for holding the front frame 204 left and right in a side view is an upper half of a circle, a cylindrical main body 220 connecting the left and right side walls 219 at lower ends, and a side wall 219 facing each other. The back support rod 2 is protruded at a predetermined position P on the inner surface.
08 and a projection 221 that engages with the hole formed in the hole 08. The side wall 219 is formed such that its separation distance is substantially equal to the diameter of the round pipe constituting the front frame 204. The main body 220 has a lower end formed to have a small diameter about the thickness of the elastic member 216, and as shown in FIG.
The outer surface with the fixing member 215 is attached flush. Further, openings are formed in the upper and lower surfaces of the main body 220 so that the second fixing member 214 abutting on the predetermined position P of the front frame 204 can be loosely fitted.

The second fixing member 214 abuts on the front frame 204 at a predetermined position P as shown in FIGS.
In addition, a receiving portion 217 to which the intrusion prevention member 207 is attached and a fitting portion 218 formed below and inserted into the round pipe of the rear leg 205 to be fitted are integrally formed of synthetic resin. is there. The outer surfaces of the elastic member 216 attached to the receiving portion 217 and the rear leg 205 are flush with each other. Further, the second fixing member 214 prevents the metal from coming into contact with each other when the front frame 204 and the rear leg 205 come into contact with each other.

The elastic member 216 is formed by forming a stretchable woven fabric into a tubular shape. Even when the front frame 204 and the rear leg 205 are folded by substantially overlapping each other, the elastic member 216 has the upper end 20 of the rear leg 205 to which the lower end is attached.
5a, it can be extended and contracted in the longitudinal direction to such an extent that it can be extended sufficiently to the vicinity of a predetermined position P of the front frame 204 to which the upper end 205a is attached.

In such a configuration, in use, when the seat 6 folded during storage is pushed down in the front lower direction, as shown in FIGS.
4 and the lower end of the rear leg 205 are wide open in the front-rear direction, and the second
The upper end 205a of the rear leg 205 fitted with the fixing member 214 supports the back support rod 208, and the rear leg 205 and the front frame 204 hold the seat 6 in a substantially horizontal state in which the seat 6 is slightly inclined backward. At this time, the upper end is attached to the predetermined position P of the front frame 204, and the lower end is the upper end 205a of the rear leg 205.
The intrusion prevention member 207 is attached to the stretchable member 216 in a contracted state.

When the chair 201 is lifted in the use state to move it, the front end of the seat 6 tilts toward the upper end of the front frame 204 as shown in FIG. The contact support is temporarily released, and the upper end 205a of the rear leg 205 in which the second fixing member 214 is fitted is separated from the back support rod 208. However, in such a case, the intrusion prevention member 207 has its upper end attached to the predetermined position P of the front frame 204 and its lower end attached to the upper end 205a of the rear leg 205. As 205a moves away from the predetermined position P with respect to the front frame 204, it extends to extend the space where no intervention is possible.
Therefore, the predetermined position P of the front frame 204 is not exposed, and it is possible to prevent the user from unintentionally engaging the predetermined position P where the finger or the like may be pinched. Will not be interposed. Thus, the probability of occurrence of an unexpected accident can be reduced as much as possible.

On the other hand, the folding chair 20 is used for storage.
20, the lower end of the front leg 203 and the lower end of the rear leg 205 approach each other, as shown in FIG.
And the rear leg 205 and the seat 6 substantially overlap, but at this time,
The elastic member 216 extends to the maximum extent, and continuously closes a predetermined position P of the front frame 204 where the rear leg 205 contacts, and the upper end portion 205a of the rear leg 205.

The present invention is not limited to the embodiment described above. For example, the intrusion prevention member 207 may be formed by integrally molding the fixing member 215 and the elastic member 216.
Also, the material and shape of the elastic member 216 are not limited to the above-described embodiment, and may be a bellows-shaped one 316 as shown in FIG. 21. Further, the central part shown in FIG. A mold type 416 may be used, and a rubber type or a synthetic resin thread 516 formed in a net shape as shown in FIG. 23 may be used. In this case, the mesh is formed so fine that a finger cannot be inserted.

In addition, the configuration of each section is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0041]

It according to claim 1, 2 and 3 of this patent application, according to the present invention
According to this invention, as described in detail above, it is possible to prevent a hand, clothing, or the like from entering a gap near a predetermined position generated when the upper end portion of the rear leg and the front frame are separated from each other. Therefore, even if the abutment support of the front frame by the upper end of the rear leg is released and a gap is generated between the upper end of the rear leg and a predetermined position in the front frame, it is not possible to pinch a hand, clothing, or the like at the predetermined position. Absent.
Thus, the probability of occurrence of an unexpected accident can be reduced as much as possible. According to the invention of claim 1 of the present application,
If, stacking chairs to be overlaid only product the previous frame of the chair
When the chair is placed so that it touches the notch of
The notch of the chair to be stacked is left on the front frame of the chair
Engagement is prohibited while rightward movement is prohibited.
The raised chair is less likely to shift left and right.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a side view showing the same embodiment.

FIG. 3 is a perspective view showing a main part of the embodiment.

FIG. 4 is a longitudinal sectional view of the main part.

FIG. 5 is an operation explanatory view of the embodiment.

FIG. 6 is an operation explanatory view of the embodiment.

FIG. 7 is a side view showing the folded state of the embodiment.

FIG. 8 is a perspective view showing another embodiment of the present invention.

FIG. 9 is a side view showing the same embodiment.

FIG. 10 is a perspective view showing a main part of the embodiment.

FIG. 11 is an operation explanatory view of the embodiment.

FIG. 12 is a side view showing the folded state of the embodiment.

FIG. 13 is a side view showing a modification of the main part of the embodiment.

FIG. 14 is a side view showing another modification of the main part of the embodiment.

FIG. 15 is a perspective view showing still another embodiment of the present invention.

FIG. 16 is a side view showing the same embodiment.

FIG. 17 is an exemplary exploded perspective view showing a main part of the embodiment;

FIG. 18 is a rear view and a side view showing the main part.

FIG. 19 is an operation explanatory view of the embodiment.

FIG. 20 is a side view showing the folded state of the embodiment.

FIG. 21 is a side view showing a modification of the elastic member in the embodiment.

FIG. 22 is a side view showing another modification of the elastic member.

FIG. 23 is a side view showing still another modification of the elastic member.

[Explanation of symbols]

1, 101, 201 ... chair 2 ... backrest 3, 103, 203 ... front leg 4, 104, 204 ... front frame 5, 105, 205 ... rear leg 5a, 105a, 205a ... upper end 6 ... seat 7, 107, 107A, 107B, 207: Intrusion prevention member 8, 108, 208: Back support rod 10: Link member 17: Notch 107a: One end 107b: Other end 107c: Bend 214: Second fixing member 215: First fixing member 216: Expansion and contraction Material P: Predetermined position

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Hei 1-86825 (JP, U) Japanese Utility Model Sho 60-170153 (JP, U) Japanese Utility Model Sho 56-5984 (JP, Y2)

Claims (3)

(57) [Claims] 1. A front frame made of a round pipe comprising a front leg extending downward continuously from an upper end having a backrest, and a rear leg whose upper end can abut a predetermined position on a rear surface of the front frame. A seat that is pivotally attached to the rear leg and the front frame, and a link member that connects the front frame and the vicinity of the upper end of the rear leg. The upper end of the rear leg is brought into contact with the predetermined position of the front frame. In the chair to be used, the movement of the upper end of the rear leg and the front frame at a predetermined position is allowed,
It is provided with a permeation prevention member for preventing foreign material from entering the predetermined position near the gap that occurs upon separating, anti-intrusion
The member surrounds the space below the predetermined position of the front frame.
It is a bar-shaped one that matches the side shape of the front frame at the lower end.
Notch, stack folded chairs
In front of the chair where the notch of the chair to be stacked is stacked
Folding chair characterized by a this <br/> engaging in a state that prohibits movement of the left and right direction in the frame. 2. A front frame comprising a front leg extending downward continuously from an upper end having a backrest, a rear leg whose upper end can abut a predetermined position on a rear surface of the front frame, and the rear leg. And a seat pivotally attached to the front frame, and a link member that connects the front frame and the vicinity of the upper end of the rear leg,
In a chair that is used by bringing the upper end of the rear leg into contact with the predetermined position of the front frame, the upper and lower ends of the rear leg and the front frame at the predetermined position are allowed to move close to and away from the predetermined position. It is provided with a permeation prevention member for preventing foreign matter from entering the gap, intrusion prevention member, other end
It has a bent part that bends in the end direction, and one end is inserted into the front frame.
And extend from the specified position on the front frame.
Slidingly inserted into the rear leg from the upper end of the rear leg
Folding chair, characterized in that it. 3. A front frame including a front leg extending downward continuously from an upper end having a backrest, a rear leg whose upper end can abut a predetermined position on a rear surface of the front frame, and the rear leg. And a seat pivotally attached to the front frame, and a link member that connects the front frame and the vicinity of the upper end of the rear leg,
In a chair that is used by bringing the upper end of the rear leg into contact with the predetermined position of the front frame, the upper and lower ends of the rear leg and the front frame at the predetermined position are allowed to move close to and away from the predetermined position. An intrusion prevention member is provided to prevent intrusion of foreign matter into the gap between the front frame and the front frame.
A first fixing member attached to the rear leg, and a first fixing member attached to the upper end of the rear leg.
A second fixing member and an upper end fixed to the first fixing member, and a lower end fixed to the first fixing member.
It is made of a stretchable elastic material fixed to the second fixing material,
When used, the second fixing material contacts the specified position on the front frame
Folding chair, characterized in that that.