CN112869445A

CN112869445A - Folding chair

Info

Publication number: CN112869445A
Application number: CN202110039146.7A
Authority: CN
Inventors: 泉里志
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-06-01

Abstract

The invention discloses a folding chair, which comprises a leg structure, a seat supporting frame and two armrests made of metal materials, wherein the leg structure comprises two supporting legs hinged with each other, the two armrests are arranged in a relative interval manner, each armrest comprises a bearing part and an installation part which are pivotally installed with each other, an installation through hole is formed in the bearing part, the seat supporting frame is fixedly connected with the bearing part by inserting a connecting piece into the installation through hole, and the supporting legs are installed on the installation parts. The folding chair has the advantages of high strength and good durability.

Description

Folding chair

Technical Field

The invention relates to the field of chairs, in particular to a folding chair.

Background

In recent years, people are keen on various outdoor camping or leisure, and the folding chair is popular because of the flexibility in use and the convenience in folding.

There are various types of folding chairs, and a structure of a folding chair is known as shown in fig. 10 and 11, and the folding chair 100 includes a leg structure 10, a pair of armrests 20, a seat support frame 30, and a support cloth structure 40. In order to be foldable right and left, the leg structure 10 is composed of a pair of support legs 11, the middle portions of the two support legs 11 are hinged together, each armrest 20 is made of wood and is connected to each support leg 11, and a seat support frame 30 is fixed to the armrest 20. Specifically, a notch 21 is provided at an end of the armrest 20, the support leg 11 is inserted into the notch 21, and the support leg 11 is pivotably connected with the armrest 20. In this manner, by lifting the armrests 20, the two support legs 11 pivot to each other and fold each other, and the two armrests 20 and the seat support frame 30 are folded while maintaining a parallel relationship with each other.

However, the handrail 20 is made of wood, the cut 21 is formed on the handrail 20, and the supporting legs 11 are pivotally connected to the handrail 20, so that when a large stress is applied to the handrail 20, the strength of both ends of the handrail 20 is insufficient, and the handrail 20 is easily damaged. The armrest 20 may be supported using a metal material such as aluminum or steel from the viewpoint of durability. However, forming the notch 21 in the metal material is troublesome, requires high manufacturing cost, and is not suitable for mass production. In particular, in the case of a metal material, it is difficult to use a solid material from the viewpoint of weight reduction, but a hollow material is generally used, and it is also troublesome to form the notch 21 in the handrail 20 made of a hollow material.

Accordingly, there is a need for a folding chair having sufficient strength and durability to overcome the above-mentioned deficiencies.

Disclosure of Invention

The object of the present invention is to provide a folding chair of sufficient strength and durability.

In order to achieve the above object, the folding chair of the present invention comprises a leg structure, a seat support frame and two armrests made of metal material, wherein the leg structure comprises two support legs hinged to each other, the two armrests are arranged at an interval, the armrests comprise a support part and a mounting part, the support part is pivotally mounted to each other, the support part is provided with a mounting through hole, the seat support frame is inserted into the mounting through hole by a connecting member and is fixedly connected to the support part, and the support legs are mounted to the mounting part.

Preferably, the retainer portion is rotatably mounted on the mounting portion.

Preferably, the mounting portion is provided with a limiting structure, the folding chair at least has an unfolding state and a folding state, and the connecting member is blocked by the limiting structure when the folding chair is in the folding state or the unfolding state, so as to limit the relative continuous pivoting of the supporting portion and the mounting portion.

Preferably, limit structure is including locating first barrier structure and second barrier structure in the installation department, first barrier structure with the second barrier structure is relative interval arrangement, first barrier structure with the second barrier structure encloses an adjustment channel, adjust the channel with the installation through-hole is just to the intercommunication, the connecting piece passes the adjustment channel, the connecting piece is in when folding chair is fold condition or expansion state support simultaneously first barrier structure with the second blocks structurally.

Preferably, the first face structure and the second that blocks that is equipped with mutual slope on the structure of first blocking blocks a structure, the second blocks that the third that is equipped with mutual slope on the structure and blocks a structure and a fourth that block a structure, first block a structure with the third blocks a structure and is mutual parallel arrangement, the second block a structure with the fourth blocks a structure and is mutual parallel arrangement, the connecting piece is in support when folding chair is in the expansion state first block a structure with the third blocks structurally, the connecting piece is in support when folding chair is in fold state the second block a structure with the fourth blocks a structure.

Preferably, the second end of the mounting part is sleeved in the supporting leg, and the mounting part is locked with the supporting leg in a clamping manner.

Preferably, a clamping ring groove arranged along the radial direction of the mounting portion is formed in the peripheral side of the second end of the mounting portion, a clamping protrusion matched with the clamping ring groove is arranged in the supporting leg, and the clamping protrusion is clamped in the clamping ring groove.

Preferably, the supporting part is a rotating shaft made of a hollow cylinder, the mounting part is a mounting part structure arranged in an L-shaped structure, a first end of the mounting part structure is rotatably sleeved in the rotating shaft, and the supporting leg is mounted at a second end of the mounting part structure.

Preferably, the bearing part is a ring-shaped rotating ring structure, the mounting part comprises a handrail shaft and a mounting shaft, the mounting shaft is mounted at the end of the handrail shaft in an intersecting manner, and the rotating ring structure is rotatably sleeved outside the handrail shaft.

Preferably, the folding chair of the invention further comprises the support cloth structure mounted on the seat support frame, the seat support frame comprises a seat support frame and a backrest support frame rotatably mounted on the seat support frame, and the seat support frame is fixedly connected with the bearing part by inserting the connecting piece into the mounting through hole.

Compared with the prior art, the folding chair comprises a leg structure, two armrests and a seat supporting frame, wherein the two armrests and the seat supporting frame are made of metal materials, the leg structure comprises two supporting legs which are hinged to each other, the two armrests are arranged at intervals relatively, the armrests comprise a bearing part and an installation part which are installed in a mutually pivoted mode, the bearing part is provided with an installation through hole, the seat supporting frame is inserted into the installation through hole through a connecting piece and is fixedly connected with the bearing part, and the supporting legs are installed on the installation part. In addition to the leg structure and the seat support frame being made of metal materials, the armrest is also made of metal materials, so that the armrest has sufficient durability and is not easily damaged. And the bearing part and the mounting part of the handrail are mutually pivoted, and no notch is arranged on the handrail, so that no stress point for damaging the structure exists on the handrail, and the strength and the durability of the handrail are further improved.

Drawings

Fig. 1 is a perspective view of a folding chair according to a first embodiment of the present invention.

Fig. 2 is a partial schematic view of an armrest in the folding chair shown in fig. 1.

Figure 3 is a schematic view of the folding process of the folding chair of the invention.

Fig. 4 is a perspective view illustrating a seat support frame of the folding chair shown in fig. 1 when folded.

FIG. 5 is a partial schematic view of an armrest in a second embodiment of the present invention

FIG. 6 is a sectional view of the planar structure taken along the line C-C in FIG. 5

Fig. 7 is a partial perspective view of a folding chair according to a third embodiment of the invention.

Fig. 8 is a partial structural view of an armrest according to a third embodiment of the present invention.

Fig. 9 is a sectional view of the planar structure taken along the line D-D in fig. 8.

Figure 10 is a perspective view of a prior art folding chair.

Fig. 11 is an enlarged schematic view of a structural portion at E in fig. 10.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

As shown in fig. 1 to 4, which illustrate a first embodiment of the present invention, a folding chair 100a of the present embodiment is different in the structure of the armrest 20a except that it has almost the same construction as the conventional folding chair 100 shown in fig. 10, and therefore, the same components are given the same reference numerals, and the repeated description is omitted or simplified.

Similar to the conventional folding chair 100 shown in fig. 10, the folding chair 100a of this embodiment includes a leg structure 10, two armrests 20a made of metal material and a seat supporting frame 30, the leg structure 10 includes two supporting legs 11 hinged to each other, the two armrests 20a are disposed at an interval, the armrests 20a include a supporting portion 21a and a mounting portion 22a pivotally mounted to each other, a mounting through hole 211 is formed in the supporting portion 21a, the seat supporting frame 30 is fixedly connected to the supporting portion 21a by inserting a connecting member 40 into the mounting through hole 211, and the supporting legs 11 are mounted on the mounting portion 22 a. In the present invention, the armrest 20a is made of a metal material in addition to the leg structure 10 and the seat support frame 30, so that the armrest 20a has sufficient durability and is not easily damaged. And the bearing part 21a and the mounting part 22a of the armrest 20a are pivotally connected with each other, and no notch is opened on the armrest 20a, so that no stress point damaging the structure exists on the armrest 20a, and the strength and durability of the armrest 20a are further improved. For example, the armrest 20a may be made of various metals such as aluminum, aluminum alloy, or steel, but is not limited thereto. The handrail 20a is constituted by, for example, a metal hollow cylindrical pipe from the viewpoint of weight reduction, but is not limited thereto. Preferably, the mounting portion 22a and the bearing portion 21a are rotatably arranged with respect to each other about the axis of the armrest 20a to facilitate relative concentric pivoting of the mounting portion 22a and the bearing portion 21a, but is not limited thereto.

As shown in fig. 1 to 4, the holding portion 21a is rotatably fitted over the mounting portion 22a so that the holding portion 21a and the mounting portion 22a are reliably mounted together and the relative pivoting therebetween is simple and convenient. Specifically, the second end of the mounting portion 22a is sleeved in the supporting leg 11, the mounting portion 22a is locked with the supporting leg 11, and the mounting portion 22a and the supporting leg 11 are firmly and reliably mounted and are convenient to disassemble and assemble. According to actual needs, the mounting portion 22a can be sleeved on the supporting leg 11, and the mounting portion 22a and the supporting leg 11 can be mounted quickly and reliably, so that the mounting method is not limited to this. More specifically, the peripheral side of the second end of the mounting portion 22a is provided with a snap ring groove 221 arranged along the radial direction thereof, the support leg 11 is provided with a snap projection 111 matching the snap ring groove 221, and the snap projection 111 is snapped into the snap ring groove 221. When the locking protrusion 111 is locked in the locking groove 221, the support leg 11 and the mounting portion 22a are securely and firmly coupled together. Of course, the second end of the mounting portion 22a and the supporting leg 11 can be fixed by other means such as screws, etc. according to actual needs, and the mounting of the mounting portion 22a and the supporting leg 11 can be realized, so it is not limited thereto.

As shown in fig. 1 and 4, the folding chair 100a of the present invention further comprises a supporting cloth structure 50 mounted on the seat supporting frame 30, the seat supporting frame 30 comprises a seat supporting frame 31 and a backrest supporting frame 32 rotatably mounted on the seat supporting frame 31, the seat supporting frame 31 is fixedly connected with the supporting portion 21a by inserting the above-mentioned connecting member 40 into the mounting through hole 211. The support fabric structure 50 provides a more comfortable support for the user and facilitates the use of the folding chair 100a by the user. When the folding chair 100a is folded, the backrest support frame 32 can also be folded onto the seat support frame 31, so that the folded folding chair 100a is more compact and convenient to store. For example, the supporting cloth structure 50 is made of a flexible material such as a woven fabric, such as a nylon cloth fabric, etc., but is not limited thereto. The support cloth structure 50 is mounted to the seat support frame 31 and the seatback support frame 32, respectively. Preferably, the seat back support frame 32 is pivotally mounted to the seat back support frame 31, but is not limited thereto.

Shown in fig. 2 is an armrest 20a located on the right side of the folding chair 100 a. The supporting part 21a is a rotating shaft made of a hollow cylinder, the mounting part 22a is a mounting member structure arranged in an L-shaped structure, a first end of the mounting member structure is rotatably sleeved in the rotating shaft, and the supporting leg 11 is mounted at a second end of the mounting member structure. The structure of the armrest 20a is simple and the rotational relationship between the bearing portion 21a and the mounting portion 22a is simple and smooth. For example, the mounting member structure is integrally formed by die casting or the like, but is not limited thereto. The outer circumferential surface of the rotating shaft is covered with a cylindrical buffer member 60 made of rubber, plastic or cloth to improve better use comfort. Preferably, the pivot portion 23a of the first end of the mounting member structure is assembled in the rotating shaft, and the rest of the structure is exposed. The front end of the seat support frame 31 is fixedly coupled to the rotation shaft by inserting a coupling member 40 into the mounting through-hole 211,

the rear end of the seat support frame 31 is fixedly connected to the rotation shaft by inserting another connecting member 40 into another mounting through hole 211, and the seat support frame 31 and the rotation shaft do not rotate relatively when the folding chair 100a is folded or unfolded. For example, the coupling member 40 is a screw, but is not limited thereto, and a nut (not shown) is threadedly coupled to an end of the screw to stably mount the screw to the rotary shaft.

The operation of the folding chair 100a of the present embodiment when folded will be described with reference to fig. 3. Fig. 3 schematically shows the structure of the folding chair 10 a. First, from the state shown in fig. 3a, the two armrests 20a and the seat support frame 30 are displaced in the direction to approach each other in accordance with the rotation of the two support legs 11, wherein the left rotation axis corresponds to the rotation in the arrow a direction and the right rotation axis corresponds to the rotation in the arrow B direction, in such a manner that the seat support frame 30 is folded to the state of fig. 3B to 3c while keeping the seat support frame 30 moving at a predetermined angle. The unfolding process of the folding chair 100a is the reverse of the folding process, and therefore, will not be described herein.

Fig. 5 and 6 show a second embodiment of the present invention. The structure of the deckchair of the second embodiment is substantially the same as the deckchair 100a of the first embodiment, with the difference that:

(1) the pivot portion 23b of the first end of the mounting member structure is longer than the pivot portion 23a of the first embodiment;

(2) the pivot portion 23b is provided with a limiting structure 24b, the folding chair at least has an unfolded state (fig. 3a) and a folded state (fig. 3b), the connecting member 40 is blocked by the limiting structure 24b when the folding chair is in the folded state or the unfolded state, so as to limit the relative continuous pivoting of the supporting portion 21a and the mounting portion 22 a;

(3) the limiting structure 24b includes a first blocking structure 241b and a second blocking structure 242b disposed in the pivot portion 23b, the first blocking structure 241b and the second blocking structure 242b are disposed at an interval, the first blocking structure 241b and the second blocking structure 242b enclose an adjusting channel 243b, the adjusting channel 243b is in direct communication with the installation through hole 211, the connecting member 40 passes through the adjusting channel 243b, and the connecting member 40 abuts against the first blocking structure 241b and the second blocking structure 242b when the folding chair is in the folding state or the unfolding state;

preferably, the first blocking structure 241b and the second blocking structure 242b are disposed in a pointed structure, but not limited thereto;

(4) the first blocking structure 241b is provided with a first blocking surface structure 2411b and a second blocking surface structure 2412b which are obliquely arranged with each other, the second blocking structure 242b is provided with a third blocking surface structure 2421b and a fourth blocking surface structure 2422b which are obliquely arranged with each other, the first blocking surface structure 2411b and the third blocking surface structure 2421b are arranged in parallel with each other, the second blocking surface structure 2412b and the fourth blocking surface structure 2422b are arranged in parallel with each other, the connecting element 40 abuts against the first blocking surface structure 2411b and the third blocking surface structure 2421b when the folding chair is in the unfolding state, and the connecting element 40 abuts against the second blocking surface structure 2412b and the fourth blocking surface structure 2422b when the folding chair is in the folding state.

In this way, since the first and

second blocking structures

241b and 242b are provided, the connecting member 40 can be rotated only within a predetermined angle range, preventing the folding chair from being excessively folded or unfolded.

Since the folding process of the folding chair of the second embodiment is substantially the same as the folding chair 100a of the first embodiment, it will not be described again.

Fig. 7 to 9 show a third embodiment of the present invention. The structure of the deckchair 100c of the third embodiment is substantially the same as that of the second embodiment (this structure is not shown in fig. 2), with the difference that:

(1) the bearing part 21a is a rotary ring structure arranged in a circular ring shape, the mounting part 22a comprises an armrest shaft 221c and a mounting shaft 222c, the mounting shaft 222c is arranged at the end part of the armrest shaft 221c in a crossed manner, and the rotary ring structure is rotatably sleeved outside the armrest shaft 221 c;

(2) the armrest shaft 221c is a long rod or shaft, preferably a hollow structure, but not limited thereto;

(3) the limit structure 24b is arranged on the handrail shaft 221c, and the limit structure 24b limits the rotation angle of the connecting member 40 within 60 degrees, but is not limited thereto;

(4) the first blocking structure 241b and the second blocking structure 242b are arranged in a ring structure, but not limited thereto;

since the folding process of the folding chair 100c of the third embodiment is substantially the same as that of the second embodiment, it will not be described again.

The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

Claims

1. A folding chair, which is characterized in that: the seat support comprises a leg structure, a seat support frame and two armrests made of metal materials, wherein the leg structure comprises two mutually hinged support legs, the two armrests are arranged at intervals, each armrest comprises a bearing part and an installation part which are mutually pivoted, the bearing parts are provided with installation through holes, the seat support frame is inserted into the installation through holes through a connecting piece and is fixedly connected with the bearing parts, and the support legs are installed on the installation parts.

2. The folding chair of claim 1 wherein said bolster portion is rotatably mounted about said mounting portion.

3. The chair of claim 1, wherein the mounting portion defines a stop structure, the chair having at least one of an extended position and a collapsed position, and the connector is blocked by the stop structure when the chair is in the collapsed or extended position to limit further pivoting of the support portion relative to the mounting portion.

4. The folding chair of claim 3, wherein the limiting structure comprises a first blocking structure and a second blocking structure arranged in the mounting portion, the first blocking structure and the second blocking structure are arranged at an interval, an adjusting channel is defined by the first blocking structure and the second blocking structure, the adjusting channel is communicated with the mounting through hole, the connecting piece penetrates through the adjusting channel, and the connecting piece abuts against the first blocking structure and the second blocking structure when the folding chair is in a folded state or an unfolded state.

5. The folding chair according to claim 4, wherein the first blocking structure is provided with a first blocking surface structure and a second blocking surface structure which are obliquely arranged with each other, the second blocking structure is provided with a third blocking surface structure and a fourth blocking surface structure which are obliquely arranged with each other, the first blocking surface structure and the third blocking surface structure are arranged in parallel with each other, the second blocking surface structure and the fourth blocking surface structure are arranged in parallel with each other, the connecting member abuts against the first blocking surface structure and the third blocking surface structure when the folding chair is in the unfolded state, and the connecting member abuts against the second blocking surface structure and the fourth blocking surface structure when the folding chair is in the folded state.

6. The folding chair as in claim 3, wherein said mounting portion has a second end that is nested within said support leg, said mounting portion being locked in place by engagement with said support leg.

7. The folding chair as claimed in claim 6, wherein the mounting portion has a snap ring groove radially disposed along the second end of the mounting portion, and the supporting leg has a snap projection matching the snap ring groove and snap into the snap ring groove.

8. The folding chair as claimed in claim 1, wherein the supporting portion is a rotating shaft made of a hollow cylinder, the mounting portion is a mounting member structure arranged in an L-shaped configuration, a first end of the mounting member structure is rotatably fitted into the rotating shaft, and the supporting leg is mounted to a second end of the mounting member structure.

9. The folding chair as claimed in claim 1, wherein the supporting portion is a ring-shaped rotating ring structure, the mounting portion includes an armrest shaft and a mounting shaft, the mounting shaft is mounted on an end of the armrest shaft in a crossed manner, and the rotating ring structure is rotatably sleeved on the armrest shaft.

10. The folding chair of claim 1, further comprising said support fabric structure mounted to said seat support frame, said seat support frame including a seat support frame and a back support frame pivotally mounted to said seat support frame, said seat support frame being fixedly attached to said bolster portion by said attachment member being received in said receiving opening.