This application claims priority to Chinese Application No. 201520105107.8, filed Feb. 13, 2015, which is incorporated herein by reference in its entirety.
The present utility model relates to an article for daily use, in particular to a chair frame structure of a foldable chair.
Due to the feature that a foldable chair is portable and foldable, not only can the movement be facilitated, but also the space is saved. Therefore, the foldable chair is widely used at places such as various training organizations, schools at all levels, public places, hospitals, restaurants, hotels, companies and families. A commonly seen foldable chair comprises a chair frame, a chair seat and a chair backrest and can be folded on the whole.
Taking a beach chair frame disclosed with publication number CN201480624 as an example, referring to
For the foldable chair frame structure with the above-mentioned structure, since the backrest pipes are fixed and are simultaneously used as front supporting legs to form front leg pipes, the backrest pipes and the front leg pipes are integral, the upper portions used as a backrest can only be in parallel with the supporting leg portions below and a certain inclination angle needs to be kept, the elevation angle of the backrest is a certain fixed angle, the effect of comfortably resting on the backrest cannot be achieved and the sitting comfortableness of the foldable chair frame is not good.
The purpose of the present utility model is to provide a chair frame structure of a foldable structure, wherein a chair frame is convenient to fold and use and has a comfortable resting backrest after being unfolded.
In order to achieve the above-mentioned purpose, the present utility model adopts the following solution:
A chair frame structure of a foldable chair comprises a supporting leg fame and seat rods and backrest rods which are connected thereon, wherein the supporting leg frame comprises side supports on two sides and cross supporting rod groups on front and rear facades, each side support comprises a front supporting leg which is rearwards and obliquely supported and a rear supporting leg which is crossly supported at an upper portion of the front supporting leg; after the rear portions of the seat rods are pivotally connected with the front supporting legs, rear ends thereof are pivotally connected onto the rear supporting legs; a backrest rod is pivotally connected onto each rear supporting leg, a connecting piece which can slide upwards is arranged on the backrest rod, and an upper end of the front supporting leg is pivotally connected onto the connecting piece; in the rear facade, lower ends of two cross supporting rods between the two rear supporting legs are respectively connected onto the rear supporting legs, and upper ends thereof are pivotally connected onto the upper ends of the front supporting legs; and in the front facade, lower ends of two cross supporting rods are respectively and pivotally connected below the front supporting legs, and upper ends thereof are pivotally connected at the front of the seat rods.
Further, each supporting rod in the front facade is connected onto the seat rod and then is upwards extended to form an armrest rod.
Further, a tail end of the armrest rod is outwards extended to form an armrest section.
Further, at least one connecting strip is pivotally connected above each rear supporting leg and is connected with the corresponding front supporting leg, and the other end of the connecting strip is connected to the front supporting leg.
Further, a pair of connecting strips are pivotally connected above each rear supporting leg, and the two connecting strips which are arranged in parallel are connected onto the two sides of the corresponding front supporting leg and the rear supporting leg.
Further, the rear supporting legs forwards support the front supporting legs, and the upper ends of the rear supporting legs are provided with rest-fitting grooves for resting the front supporting legs.
By adopting the above-mentioned structure, in the present utility model, since the backrest rods are located at the rear of the front supporting legs and the rear supporting legs which are crossly supported and a certain elevation angle is formed between the backrest rods and the seat rods, a resting surface with a certain elevation angle is formed at the rear of the seat surface; since the backrest rods are separately designed and connected into the chair frame to fit the angle needed for resting, the chair frame can be unfolded on the whole and a comfortable sitting posture can be obtained during use. In addition, the chair frame can be unfolded or folded to a small volume on the whole and thereby is convenient to use.
In order to further explain the technical solution of the present utility model, the present utility model will be described below in detail through specific embodiments.
As shown in
In combination with
The backrest rods 2 are pivotally connected onto the rear supporting legs 12, the seat rods 3 which are used for connecting the seat cloth are simultaneously and pivotally connected onto the front supporting legs 11 and the rear supporting legs 12, the seat rods 3 are pivotally connected to the inner sides of the front supporting legs 11 and the rear supporting legs 12, the rear portions of the seat rods 3 are pivotally connected with the front supporting legs 11 and then the rear ends of the seat rods 3 are pivotally connected onto the rear supporting legs 12. The lower ends of the backrest rods 2 are also pivotally connected above the rear supporting legs 12, and simultaneously the top ends of the front supporting legs 11 are enabled to be also connected onto the backrest rods 2. Thus, each backrest rod 2 is connected between the two supporting legs and has a slightly rearward elevation angle, a certain included angle is formed between each backrest rod 2 and the corresponding seat rod 3 which is transversely horizontal, and a resting surface with a certain elevation angle can be obtained above the seat surface. Moreover, a connecting piece 41 which can slide upwards is arranged on each backrest rod 2 and the upper end of the front supporting leg 11 is pivotally connected onto the connecting piece 41.
Cross supporting rod groups are arranged in the front facade and the rear facade of the chair frame, a cross supporting rod group is connected between the two rear supporting legs 12, the lower ends of two cross supporting rods 51 in the cross supporting rod group are respectively and pivotally connected onto the rear supporting legs 12, the upper ends are respectively connected onto the backrest rods 2, the upper ends of the supporting rods 51 are pivotally connected onto the upper ends of the front supporting legs 11, and thus the upper ends of the front supporting legs 11 together with the upper ends of the supporting rods 51 are pivotally connected onto the connecting pieces 41. A cross supporting rod group is also arranged in the front facade of the chair frame and comprises two cross supporting rods 52 in the front facade, the lower ends of the supporting rods 52 are respectively and pivotally connected below the front supporting legs 11, and the upper ends of the supporting rods 52 are pivotally connected at the front of the seat rods 3. Further, in order to form armrests in the chair frame, each supporting rod 52 in the front facade is connected onto the seat rod 3 and then is upwards extended to form an armrest rod 521, the tail end of each armrest rod 521 can also be outwards extended to form an armrest section 522 to rest a hand during sitting and resting, an armrest cloth can be outwards extended from each backrest rod 2 and be connected into the armrest section 522 and thus armrests on the two sides of the chair frame are formed.
By movably connecting all rods, when the chair frame disclosed by the present utility model is folded, as shown in
By adopting the chair frame structure of the foldable chair disclosed by the present utility model, since the backrest rods 2 are located at the rear of the front supporting legs 11 and the rear supporting legs 12 which are crossly supported and a certain elevation angle is formed between the backrest rods 2 and the seat rods 3, a resting surface with a certain elevation angle is formed at the rear of the seat surface; since the backrest rods 2 are separately designed and connected into the chair frame to fit the angle needed for resting, the chair frame can be unfolded on the whole and a comfortable sitting posture can be obtained during use. In addition, since the front and rear supporting legs, the seat rods, the backrest rods and the cross supporting rod groups in the front and rear facades are connected together in a linked manner, the seat rods are cooperatively folded and rest-fit to the front of the backrest rods during folding, the front facade of the chair frame is directly rearwards folded, all rods of the chair frame are enabled to be folded compactly, the volume of the folded chair frame is small, and the storage and transportation are more favorably facilitated.
The above-mentioned embodiments and drawings are not used for limiting the product form and pattern of the present utility model. All proper changes or modifications made by one skilled in the art thereto shall be considered to fall into the patent range of the present utility model.
Number | Date | Country | Kind |
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2015 2 0105108 U | Feb 2015 | CN | national |
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