Metal chair frame

Abstract

The utility model relates to a metal chair frame which comprises a seat surface rod, a front foot rod and a rear foot rod, the front foot rods are fixedly arranged below the front ends of the seat surface rods respectively; the rear leg rod is fixedly connected to the rear end of the seat surface rod, one end of the rear leg rod is positioned below the seat surface rod and supports the seat surface rod together with the front leg rod, and the other end of the rear leg rod protrudes out of the upper part of the seat surface rod and forms a backrest structure. According to the metal chair frame disclosed by the utility model, the rear leg rod is extended, and the backrest structure is formed at the upper section part of the rear leg rod; and the lower section parts of the rear foot rods and the front foot rods jointly support the seat surface rods, so that the metal chair frame is stable and reliable, the occupied space of the backrest structure is reduced, and the chair is convenient to use and store.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a metal chair frame. Background Art

[0002] In the existing metal chair frames, a backrest frame is mostly arranged on the seat surface rod. The backrest frame surrounds the rear end and both sides of the seat surface rod and is connected to the front foot rod, so that the metal chair frame has a stable and reliable backrest structure. However, the metal chair frame with such a setting occupies a large space, especially the backrest structure. It is not conducive to the user to store it under the table; and when moving it for use, the user needs to walk around to the front of the metal chair frame and avoid the wide backrest structure before sitting down. Summary of the Invention

[0003] Based on this, the purpose of the utility model is to provide a metal chair frame, which has the advantages of convenient use, stability and reliability.

[0004] A metal chair frame includes a seat surface rod, a front foot rod and a rear foot rod; the front foot rods are respectively fixed below the front end of the seat surface rod; the rear foot rod is fixedly connected to the rear end of the seat surface rod, one end of which is located below the seat surface rod and supports the seat surface rod together with the front foot rod, and the other end protrudes above the seat surface rod and forms a backrest structure.

[0005] In the metal chair frame of the utility model, by extending the rear foot rod and forming a backrest structure on the upper part of the rear foot rod; and the lower part of the rear foot rod and the front foot rod jointly support the seat surface rod, so that the metal chair frame is not only stable and reliable, but also the space occupied by its backrest structure is reduced, which is convenient for use and storage.

[0006] Further, the seat surface rod includes a front rod, a first side rod, a rear rod and a second side rod which are connected end to end in sequence; the front rod and the rear rod are arranged oppositely, and the first side rod and the second side rod are arranged oppositely; the first side rod and the second side rod are curved in the vertical projection plane, including a protruding part and a concave part; the protruding part protrudes upward, one end of which is fixedly connected to one end of the front rod, and the other end of which is fixedly connected to one end of the concave part; the concave part protrudes downward, and the end far from the protruding part is fixedly connected to one end of the rear rod; the front foot rod is fixedly connected to the protruding part, and the rear foot rod is fixedly connected to the concave part. So that the front side and the rear side of the upper end of the seat surface rod are respectively attached to the thighs and buttocks of the user, and the use experience is more comfortable.

[0007] Further, the front rod is arc-shaped and protrudes forward and outward; the rear rod is also arc-shaped and protrudes backward. Such a setting makes the front rod fit the inner side of the thigh, and the rear rod fit the rear end of the buttocks.

[0008] Further, the number of the front foot rods is two, and the two front foot rods are symmetrically arranged on both sides of the front rod; each front foot rod includes a fixed connection part and a first support part; the fixed connection part is fixedly arranged at the lower end of the protruding part in a parallel and attached manner, and the first support part is fixedly connected below one end of the fixed connection part away from the concave part.

[0009] Further, the rear foot rod includes two second support parts and a backrest part; the middle parts of the two second support parts are respectively fixedly connected to the concave parts on both sides and are inclined towards the front foot rod; the two ends of the backrest part are respectively fixedly connected to the upper ends of the two second support parts; the parts of the two second support parts protruding above the seat surface rod and the backrest part together form the backrest structure. The rear foot rod is inclined, which not only makes the overall metal chair frame stable and not easy to overturn, but also makes its backrest support stable and effective.

[0010] Further, the backrest part is in an arc shape on the horizontal projection plane, and the arc protrudes in the direction away from the front foot rod. The backrest part is comfortable to use.

[0011] Further, one end of the backrest part close to the second support part is lower than the other end of the backrest part away from the second support part. This enables the backrest part to better support the user's back in the height direction and provides a more comfortable experience.

[0012] Further, the end of the backrest part away from the second support part protrudes outside the rear rod. When the user uses the metal chair frame, the back can tilt backward at a certain angle, providing a higher level of comfort.

[0013] Further, the upper ends of the two second support parts do not exceed one-third of the first side rod or the second side rod on the horizontal projection plane. This makes the space occupied by the backrest structure smaller and the overall storage effect of the metal chair frame better.

[0014] Further, it further includes a foot rod, two first blocking rods and a second blocking rod; the two ends of the foot rod are respectively fixedly connected to the two front foot rods; the two ends of the first blocking rod are respectively fixedly connected to the second support part and the front foot rod on the same side; the two ends of the second blocking rod are respectively fixedly connected to the two second support parts, and the second blocking rod is arranged below the rear rod close to it. The foot rod is used for propping the feet; it increases the stability of the metal chair frame; the second blocking rod does not affect the user's movement of the metal chair frame. For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the metal chair frame of the present application;

[0016] Figure 2 is a side view of the metal chair frame of the present application.

[0017] In the figure:

[0018] 1 - seat surface rod; 11 - front rod; 12 - rear rod; 13 - side rod; 131 - protruding part; 132 - recessed part;

[0019] 2 - front foot rod; 21 - fixed connection part; 22 - first support part;

[0020] 3 - rear foot rod; 31 - second support part; 32 - backrest part;

[0021] 4 - foot rod; 5 - first blocking rod; 6 - second blocking rod. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical direction", "up", "down", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or a connection through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Please refer to Figure 1-2 , this application provides a metal chair frame, including a seat surface rod 1, a front foot rod 2 and a rear foot rod 3. The front foot rod 2 and the rear foot rod 3 are respectively fixed at both ends of the seat surface rod 1 to support the seat surface rod 1; wherein, the upper end of the rear foot rod 3 protrudes from the seat surface rod 1 and forms a backrest structure.

[0026] In this embodiment, the seat surface rod 1 includes a front rod 11, a rear rod 12 and two side rods 13. The front rod 11, one side rod 13, the rear rod 12 and the other side rod 13 are sequentially connected end to end to form a closed frame. Further, the seat surface rod 1 is generally trapezoidal in the horizontal projection plane. Preferably, the length of the front rod 11 is longer than that of the rear rod 12. Such a seat surface rod 1 can provide a larger leg placement space and more comfortable use. In other embodiments, the seat surface rod 1 can be in other closed shapes, such as a circle, an ellipse, a rhombus, etc.

[0027] Further, the side rod 13 is curved in the vertical projection plane and includes a protruding portion 131 and a concave portion 132. The protruding portion 131 protrudes upward, one end of which is fixedly connected to one end of the front rod 11, and the other end of which is fixedly connected to one end of the concave portion 132; the concave portion 132 protrudes downward, and the end thereof far from the protruding portion 131 is fixedly connected to one end of the rear rod 12. This makes the front side and the rear side of the upper end of the seat surface rod 1 fit the user's thighs and buttocks respectively, and the use experience is more comfortable.

[0028] Further, the front rod 11 is arranged in an arc shape, protruding forward and outward; the rear rod 12 is also arranged in an arc shape, protruding backward. Such an arrangement makes the front rod 11 fit the inner side of the thigh, and the rear rod 12 fit the rear end of the buttocks.

[0029] Further, the connections between the front rod 11, the rear rod 12 and the two side rods 13 are smoothly transitioned to avoid bruising the user.

[0030] The front foot rod 2 includes two rods respectively fixedly connected to both ends of the front rod 11. The front foot rod 2 includes a fixing portion 21 and a first supporting portion 22. The fixing portion 21 is fixedly arranged at the lower end of the protruding portion 131, and the first supporting portion 22 is fixedly connected below one end of the fixing portion 21 far from the concave portion 132 for supporting the seat surface rod 1. In this embodiment, the fixing portion 21 is arc-shaped and cooperates with the lower end of the protruding portion 131.

[0031] The rear foot rod 3 includes two second supporting portions 31 and a backrest portion 32. The middle parts of the two second supporting portions 31 are respectively fixedly connected to both sides of the rear end of the seat surface rod 1 and are symmetrically arranged. The two second supporting portions 31 are inclined towards the front foot rod 2. In this embodiment, the middle parts of the two second supporting rods are respectively fixedly connected to both sides of the rear end of the seat surface rod 1 through a connecting rod. The backrest portion 32 is arc-shaped in the horizontal projection plane, and both ends thereof are respectively fixedly connected to the upper ends of the two second supporting portions 31. The parts of the two second supporting portions 31 protruding above the upper end of the seat surface rod 1 and the backrest portion 32 together form the backrest structure of the metal chair frame.

[0032] Further, the upper ends of the two second supporting portions 31 do not exceed one-third of the rear ends of the two side rods 13 in the horizontal projection plane, so that the space occupied by the backrest structure is small and the overall storage effect of the metal chair frame is good.

[0033] Further, one end of the backrest portion 32 close to the second support portion 31 is lower than the end thereof away from the second support portion 31, so that the backrest portion 32 can better support the user's back in the height direction and the experience is more comfortable.

[0034] Further, the end of the backrest portion 32 away from the second support portion 31 protrudes from the rear end of the seat surface rod 1, so that when the user uses the metal chair frame, the user's back can be tilted backward at a certain angle, and the comfort is higher.

[0035] Further, the metal chair frame further includes a foot rod 4. The foot rod 4 is horizontally arranged, and both ends thereof are fixedly connected to the two first support portions 22 respectively and are located below the front rod 11, and are used for the user to rest the feet and increase the stability of the metal chair frame.

[0036] Further, the metal chair frame further includes two first retaining rods 5 and a second retaining rod 6. The first retaining rod 5 is horizontally arranged, and both ends thereof are fixedly connected to the first support portion 22 and the second support portion 31 on the same side respectively and are located below the side rod 13; preferably, the two first retaining rods 5 are on the same horizontal plane. The second retaining rod 6 is horizontally arranged, and both ends thereof are fixedly connected to the two second support portions 31 respectively and are located below the rear rod 12. The first retaining rod 5 and the second retaining rod 6 increase the stability of the metal chair frame. Further, the second retaining rod 6 is arranged close to the rear rod 12 and is located above the first retaining rod 5. This arrangement can not only increase the stability of the metal chair frame, but also when the user moves the metal chair frame from the rear of the metal chair frame, the second retaining rod 6 will not block the user's legs.

[0037] For the metal chair frame of the present application, by extending the rear foot rod 3 and forming a backrest structure on the upper section of the rear foot rod 3; and the lower section of the rear foot rod 3 and the front foot rod 2 jointly support the seat surface rod 1, the metal chair frame is not only stable and reliable, but also the space occupied by the backrest structure is reduced, which is convenient for use and storage.

[0038] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and the present invention also intends to include these modifications and deformations.

Claims

1. A metal chair frame, characterized in that: It includes a seat surface rod, front foot rods and rear foot rods; the front foot rods are respectively fixed below the front end of the seat surface rod; the rear foot rods are fixedly connected to the rear end of the seat surface rod, one end of which is located below the seat surface rod and supports the seat surface rod together with the front foot rods, and the other end protrudes above the seat surface rod and forms a backrest structure; The seat surface rod includes a front rod, a first side rod, a rear rod and a second side rod that are sequentially connected end to end; the front rod and the rear rod are oppositely arranged, and the first side rod and the second side rod are oppositely arranged; the first side rod and the second side rod are curved in the vertical projection plane and include a protruding portion and a recessed portion; the protruding portion protrudes upward, one end of which is fixedly connected to one end of the front rod, and the other end of which is fixedly connected to one end of the recessed portion; the recessed portion protrudes downward, and the end away from the protruding portion is fixedly connected to one end of the rear rod; the front foot rods are fixedly connected to the protruding portion, and the rear foot rods are fixedly connected to the recessed portion.

2. The metal chair frame according to claim 1, wherein: The front rod is in an arc shape and protrudes forward and outward; the rear rod is also in an arc shape and protrudes backward.

3. The metal chair frame according to claim 1, characterized in that: The number of the front foot rods is two, and the two front foot rods are symmetrically arranged on both sides of the front rod; each front foot rod includes a fixed connection portion and a first support portion; the fixed connection portion is fixedly arranged parallelly and fittingly at the lower end of the protruding portion, and the first support portion is fixedly connected below the end of the fixed connection portion away from the recessed portion.

4. The metal chair frame according to claim 1, characterized in that: The rear foot rod includes two second support portions and a backrest portion; the middle parts of the two second support portions are respectively fixedly connected to the recessed portions on both sides and are inclined towards the front foot rods; the two ends of the backrest portion are respectively fixedly connected to the upper ends of the two second support portions; the parts of the two second support portions protruding above the seat surface rod and the backrest portion together form the backrest structure.

5. The metal chair frame according to claim 4, characterized in that: The backrest portion is in an arc shape in the horizontal projection plane, and the arc protrudes in the direction away from the front foot rods.

6. The metal chair frame according to claim 5, characterized in that: One end of the backrest portion close to the second support portion is lower than the end of the backrest portion away from the second support portion.

7. The metal chair frame according to claim 6, wherein: The end of the backrest portion away from the second support portion protrudes outside the rear rod.

8. The metal chair frame according to claim 4, characterized in that: The upper ends of the two second support portions do not exceed one-third of the first side rod or the second side rod in the horizontal projection plane.

9. The metal chair frame according to claim 4, wherein: It further includes a foot rod, two first blocking rods and a second blocking rod; the two ends of the foot rod are respectively fixedly connected to the two front foot rods; the two ends of the first blocking rod are respectively fixedly connected to the second support portion and the front foot rod on the same side; the two ends of the second blocking rod are respectively fixedly connected to the two second support portions, and the second blocking rod is arranged close to the lower part of the rear rod.

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