CN216651822U

CN216651822U - Folding backrest chair frame and folding backrest chair

Info

Publication number: CN216651822U
Application number: CN202123275345.2U
Authority: CN
Inventors: 朱晓辉; 张帆
Original assignee: Zhejiang Sunshine Leisure Products Co ltd
Current assignee: Zhejiang Sunshine Leisure Products Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-06-03
Anticipated expiration: 2031-12-23

Abstract

The utility model relates to a folding backrest chair frame and a folding backrest chair, which comprise two front foot rods, two rear foot rods, two handrail rods, two backrest rods, two seat rods, two handrail support rods, two movably connected front cross rods and two movably connected rear cross rods; sliding sleeves are sleeved on the front foot rod and the rear foot rod in a sliding manner; the rear foot rod is hinged on the handrail rod, and the sliding sleeve of the front foot rod, the handrail rod and the seat rod are hinged with the handrail support rod; the front foot rod is hinged on the seat rod, and the seat rod is respectively hinged with the sliding sleeve of the rear foot rod and the backrest rod; the back cross rod is hinged with the back rest rod and the seat rod; the front cross rod is hinged with the front foot rod and the seat rod. When the technical scheme of the utility model is folded, the two groups of sliding sleeves respectively slide along the front foot rod and the rear foot rod, and the cross rods rotate and are folded. The folding backrest chair is convenient to fold, is provided with the split grab rail and the rear foot rod, has good support property and strong comfort, and is beneficial to use and popularization.

Description

Folding backrest chair frame and folding backrest chair

Technical Field

The utility model relates to the technical field of daily necessities, in particular to a folding backrest chair frame and a folding backrest chair.

Background

The folding backrest chair is a portable chair with a folding function, has a backrest function, is convenient to move and saves space. The device is commonly used in various training institutions, schools at all levels, public places, hospitals, restaurants, hotels, companies, families and other places. In the existing folding chair, as the leisure folding chair proposed in patent CN201520542706.0, the seat tube and the rear leg of the folding chair are an integral tube, which causes the seat tube to have a large inclination, and further affects the sitting comfort of the product. The folding chair is a soft armrest structure, which has poor support performance for arms and affects comfort of use of the product, as proposed in patent CN 200920138004. Therefore, how to provide a folding chair with both comfort and portability is a technical problem focused on in the industry at present.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is desirable to provide a foldable back rest chair frame and a foldable back rest chair, which can solve the problem of poor comfort of the conventional foldable back rest chair.

In one aspect, the present invention provides a folding back chair frame, comprising: two front foot rods, two rear foot rods, two handrail rods, two backrest rods, two seat rods, two handrail support rods, two movably connected front cross rods and two movably connected rear cross rods; sliding sleeves are sleeved on the front foot rod and the rear foot rod in a sliding manner; the rear foot rod is hinged on the handrail rod, and the sliding sleeve of the front foot rod, the handrail rod and the seat rod are hinged with the handrail support rod; the front foot rod is hinged on the seat rod, and the seat rod is respectively hinged with the sliding sleeve of the rear foot rod and the backrest rod; the backrest rod and the seat rod are hinged with the back cross rod; the front foot rod and the seat rod are hinged with the front cross rod.

Wherein, in order to strengthen the flexibility ratio of being connected between seat pole and the preceding crossbar, make folding back chair can fold more smoothly and accomodate, on articulated the locating seat on the seat pole, can set up a U type articulated elements on the locating seat rotation ground, preceding crossbar articulates on U type articulated elements.

Wherein, in order to reduce the connecting piece volume of junction, practice thrift the cost, the both ends of back crossbar are passed through L type articulated elements and are articulated with back pole and seat pole respectively.

In order to avoid the sliding of the folding backrest chair on the ground and protect the safety of a user, the bottom ends of the front foot rod and the rear foot rod are sleeved with anti-skidding protective sleeves.

Wherein, in order to make folding back chair more firm, promote the support nature, the middle part position of two preceding crossbars is articulated each other, and the middle part position of two back crossbars is articulated each other also.

Furthermore, the sliding sleeve is provided with a hinge hole, one end of the handrail supporting rod is hinged on the sliding sleeve of the front foot rod through the hinge hole, and one end of the seat rod is hinged on the sliding sleeve of the rear foot rod through the hinge hole.

On the other hand, the technical scheme of the utility model also provides a folding backrest chair, which comprises chair cloth and the folding backrest chair frame, wherein the chair cloth is arranged on the folding backrest chair frame.

According to the technical scheme, the handrail supporting rod, the backrest rod, the front cross rod and the rear cross rod are arranged, and the sliding sleeves are arranged on the front foot rod and the rear foot rod. When the folding mechanism is folded, the two groups of sliding sleeves respectively slide along the front foot rod and the rear foot rod, and the cross rods rotate and are folded. The folding backrest chair is convenient to fold, is provided with the split grab rail and the rear foot rod, has good support property and strong comfort, and is beneficial to use and popularization.

Drawings

FIG. 1 is a general schematic view of one embodiment of a folding back chair frame of the present invention;

FIG. 2 is an enlarged partial view of a portion A of the folding back chair frame shown in FIG. 1;

FIG. 3 is an enlarged partial view of a portion B of the folding back chair frame shown in FIG. 1;

FIG. 4 is an enlarged partial view of a portion C of the folding back chair frame shown in FIG. 1;

FIG. 5 is a schematic view of the folding back chair frame of the utility model in a semi-folded state;

FIG. 6 is a schematic view of the folding back chair frame of the utility model in its folded state.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a front foot bar; 2. a rear foot bar; 3. a grab rail; 4. a back rest rod; 5. a seat post; 6. a handrail support rod; 7. a front crossbar; 8. a rear cross bar; 9. a sliding sleeve; 10. positioning seats; 11. a U-shaped hinge member; 12. an L-shaped hinge member; 13. an antiskid protective sleeve.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is apparent that the specific details set forth in the following description are merely exemplary of the utility model, which can be practiced in many other embodiments that depart from the specific details disclosed herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In one embodiment, referring to fig. 1 to 6, a folding backrest chair frame includes: two front foot rods 1, two rear foot rods 2, two handrail rods 3, two backrest rods 4, two seat rods 5, two handrail support rods 6, two movably connected front cross rods 7 and two movably connected rear cross rods 8; the front leg rod 1 and the rear leg rod 2 are sleeved with sliding sleeves 9 in a sliding manner; the rear foot rod 2 is hinged on the handrail rod 3, and the sliding sleeve 9 of the front foot rod 1, the handrail rod 3 and the seat rod 5 are hinged with the handrail support rod 6; the front foot rod 1 is hinged on the seat rod 5, and the seat rod 5 is also respectively hinged with the sliding sleeve 9 of the rear foot rod 2 and the backrest rod 4; the back cross rod 8 is hinged with the back rest rod 4 and the seat rod 5; the front cross bar 7 is hinged with the front foot bar 1 and the seat bar 5.

In the technical scheme of the utility model, the handrail rod 3, the handrail support rod 6, the backrest rod 4, the front cross rod 7 and the rear cross rod 8 are arranged, and the sliding sleeves 9 are arranged on the front foot rod 1 and the rear foot rod 2. When the folding bicycle is folded, the two groups of sliding sleeves 9 respectively slide along the front foot rods 1 and the rear foot rods 2, and the cross rods rotate and fold. The folding backrest chair is convenient to fold, is provided with the split grab rail 3 and the split rear foot rod 2, has good support property and strong comfort, and is beneficial to use and popularization.

On the basis of this embodiment, the seat rod 5 is hinged to a positioning seat 10, a U-shaped hinge 11 is rotatably disposed on the positioning seat 10, and the front cross rod 7 is hinged to the U-shaped hinge 11. The positioning seat 10 and the rotatable U-shaped hinge 11 can enhance the connection flexibility between the seat rod 5 and the front cross rod 7, so that the folding back rest chair can be folded and stored more smoothly. In this embodiment, the positioning post is provided with a U-shaped slot and is fixed on the front cross bar 7 through the positioning post. Of course, the structure of the positioning socket 10 can be other, which is not described as a limitation in the embodiment.

In the embodiment, further, in order to reduce the volume of the connecting piece at the connecting position and save the cost, two ends of the back cross bar 8 are respectively hinged with the backrest bar 4 and the seat bar 5 through L-shaped hinges 12. Wherein, L type articulated elements 12 also can set up on a positioning seat 10 by rotation ground, and the reference column is fixed in back pole 4 pole. The hinge is completed with this structure.

Specifically, in order to avoid the sliding of the folding back-rest chair on the ground and protect the safety of users, the bottom ends of the two front foot rods 1 and the two rear foot rods 2 are sleeved with anti-skid protective sleeves 13.

On the basis of the embodiment, the middle positions of the two front cross rods 7 are hinged with each other, and the middle positions of the two rear cross rods 8 are also hinged with each other. The two groups of cross rods form an X shape, so that the folding backrest chair can be firmer effectively, and the support performance is improved.

Furthermore, the sliding sleeve 9 is provided with a hinge hole, one end of the handrail support rod 6 is hinged on the sliding sleeve 9 of the front foot rod 1 through the hinge hole, and one end of the seat rod 5 is also hinged on the sliding sleeve 9 of the rear foot rod 2 through the hinge hole. Wherein the hinge may be as shown in fig. 2 or fig. 3, which is not described as a limitation in the present embodiment.

According to the technical scheme, the sliding sleeve 9 is connected to the rear foot rod 2, the sliding sleeve 9 can slide along the rear foot rod 2, and the sliding sleeve 9 is linked with the rear cross rod 8 through the hinge piece when being unfolded and folded. The sliding sleeve 9 is also sleeved on the front foot rod 1, and the sliding sleeve 9 can slide on the front foot rod 1. The back crossbar 8 and the sliding sleeve 9 are linked and unfolded, the back crossbar 8 can support the whole backrest rod 4, the back stabilizing effect is achieved when the chair is unfolded, inward extrusion is avoided, and the comfort level is guaranteed.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, substitutions and alterations can be made without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the claims.

Claims

1. A folding back chair frame, comprising: two front foot rods, two rear foot rods, two handrail rods, two backrest rods, two seat rods, two handrail support rods, two movably connected front cross rods and two movably connected rear cross rods; sliding sleeves are sleeved on the front foot rod and the rear foot rod in a sliding manner; the rear foot rod is hinged on the handrail rod, and the sliding sleeve of the front foot rod, the handrail rod and the seat rod are hinged with the handrail support rod; the front foot rod is hinged on the seat rod, and the seat rod is respectively hinged with the sliding sleeve of the rear foot rod and the backrest rod; the backrest rod and the seat rod are hinged with the rear cross rod; the front foot rod and the seat rod are hinged with the front cross rod.

2. The frame for a folding back-rest chair according to claim 1, wherein the seat bar is hinged to a positioning seat, the positioning seat is rotatably provided with a U-shaped hinge, and the front cross bar is hinged to the U-shaped hinge.

3. The folding back chair frame according to claim 1, wherein both ends of the rear cross bar are hinged with the back bar and the seat bar through L-shaped hinges, respectively.

4. The folding back chair frame according to claim 1, wherein the bottom ends of the front leg bar and the rear leg bar are covered with an anti-slip protective sleeve.

5. The folding back chair frame according to claim 1, wherein the two front cross bars are hinged to each other at their middle positions, and the two rear cross bars are hinged to each other at their middle positions.

6. The folding backrest chair frame of claim 1, wherein the sliding sleeve is provided with a hinge hole, one end of the armrest support rod is hinged to the sliding sleeve of the front foot rod through the hinge hole, and one end of the seat rod is hinged to the sliding sleeve of the rear foot rod through the hinge hole.

7. A folding back chair, comprising: the folding backrest chair frame of any one of claims 1 to 6 and a chair cloth provided thereon.