Quick assembly chair

Abstract

A quick-assembly chair, comprising a seat frame assembly (1), a backrest frame assembly (2), a first armrest assembly (3), and a second armrest assembly (6), wherein the seat frame assembly (1) is connected to the backrest frame assembly (2), wherein the backrest frame assembly (2) is rotatable with respect to the seat frame assembly (1), and the backrest frame assembly (2) comprises a first limiting portion (14); wherein the first armrest assembly (3) is located on a first side of the seat frame assembly (1) and the backrest frame assembly (2); wherein the second armrest assembly (6) is located on a second side of the seat frame assembly (1) and the backrest frame assembly (2); and wherein the first armrest assembly (3) comprises a third limiting portion (16), the third limiting portion (16) being used to connect with the first limiting portion (14) to keep the backrest frame assembly (2) stationary with respect to the first armrest assembly (3).

Description

A quick-assembly chair Technical field This disclosure relates to the technical field of chairs, in particular to a quick-assembly chair. Background Chair assembly technology has reached a relatively advanced level, especially in the modern industrial production environment. Many chair manufacturers have adopted advanced production lines and automated equipment to ensure the accuracy and efficiency of chair assembly. These technologies not only increase production speed but also reduce the possibility of human error, thus improving the overall quality of the chair. Due to developments in logistics and changes in lifestyle, chairs are no longer sold to consumers as fully assembled units, but rather as multiple components for self-assembly. Therefore, ease of assembly is a very important factor. Many chairs adopt a modular structure, making the assembly process easier and more efficient. Modular assembly allows manufacturers to break down the chair into multiple independent parts, which can be easily delivered and assembled. However, current rapid assembly methods for chairs primarily involve the localized use of interlocking mechanisms combined with manually tightened screws. These still present disadvantages such as cumbersome assembly, a large number of manual screws, a poor user experience, and insufficient structural strength. The foregoing disclosure is intended solely to aid in understanding the inventive concept and technical solution of this disclosure and does not necessarily pertain to the related art of this patent application. In the absence of clear evidence that the foregoing content was disclosed as of the filing date of this patent application, the foregoing disclosure should not be used to evaluate the novelty and creativity of this application. Summary Therefore, this disclosure provides a quick-assembly chair that, through structural optimization, greatly reduces the number of parts manually fixed by the user, improves the user's assembly experience and efficiency, and also improves the structural strength of the chair. This disclosure provides a quick-assembly chair, which includes a seat frame assembly (1), a backrest frame assembly (2), a first armrest assembly (3), and a second armrest assembly (6), wherein the seat frame assembly (1) is connected to the backrest frame assembly (2); The backrest frame assembly (2) is rotatable relative to the seat frame assembly (1), and the backrest frame assembly (2) includes a first limiting portion (14); the first armrest assembly (3) is located on a first side of the seat frame assembly (1) and the backrest frame assembly (2); the second armrest assembly (6) is located on a second side of the seat frame assembly (1) and the backrest frame assembly (2); and The first armrest assembly (3) includes a third limiting portion (16), the third limiting portion (16) is used to connect with the first limiting portion (14) to keep the backrest frame assembly (2) stationary with respect to the first armrest assembly (3). Optionally, the backrest frame assembly (2) also includes a second limiting portion (15), and the second armrest assembly (6) includes a fourth limiting portion (17); the fourth limiting portion (17) is used to connect with the second limiting portion (15) to keep the backrest frame assembly (2) stationary with respect to the second armrest assembly (6). Optionally, the first limiting portion (14) is a limiting protuberance or a concave limiting structure. Optionally, the first armrest assembly (3) has a first connection point (4); the first armrest assembly (3) is configured to connect with the seat frame assembly (1) and the backrest frame assembly (2) at the first connection point (4) by means of a first moving component (5); The second armrest assembly (6) has a second connection point (7); wherein the second armrest assembly (6) is configured to connect with the seat frame assembly (1) and the backrest frame assembly (2) at the second connection point (7) by means of a second moving component (8). Optionally, the quick-assembly chair also includes: a rear seat support bar (9), wherein the rear seat support bar (9) is detachably installed at a connection point between the seat frame assembly (1) and the backrest frame assembly (2). Optionally, the quick-assembly chair also includes: a front seat support bar (10), wherein the front seat support bar (10) is rotatably attached to the seat frame assembly (1). Optionally, the front seat support bar (10) also includes a first fixing pin (11) and a second fixing pin (12); wherein the first fixing pin (11) is used to connect the first armrest assembly (3) and allow the first armrest assembly (3) to be rotatable relative to the first fixing pin (11); wherein the second fixing pin (12) is used to connect the second armrest assembly (6) and allow the second armrest assembly (6) to be rotatable relative to the second fixing pin (12). Optionally, the connection point of the front seat support bar (10) and the seat frame assembly (1), the first fixing pin (11) and the first connection point (4) form a triangle. Optionally, the first armrest assembly (3) also includes a seat support latch (13); wherein the first armrest assembly (3) is configured to be attached to the seat frame assembly (1) such that the seat support latch (13) is engaged with the seat frame assembly (1). Optionally, the number of seat support latches (13) under the seat is not less than two; wherein the first armrest assembly (3) is configured to be fixed to the seat frame assembly (1) such that one or more of the seat support latches (13) are in contact with both surfaces of the seat frame assembly (1). The third limiting portion (16) has multiple positioning holes for positioning the backrest frame assembly (2), such that the backrest frame assembly (2) can be tilted into multiple distinct positions. Compared to the related technique, this disclosure has the following beneficial effects: The quick-assembly chair provided by this disclosure connects the seat frame assembly (1) and the backrest frame assembly (2) in a rotatable manner, allowing users to avoid assembling the seat frame assembly (1) and the backrest frame assembly (2). Instead, users only need to assemble the first armrest assembly (3) and the second armrest assembly (6), significantly reducing the number of parts for user assembly and improving user assembly efficiency. The present disclosure adopts an integrated structure for the seat frame assembly (1) and the backrest frame assembly (2), without threads or other parts for fixing, greatly reducing the connection range of the moving components and greatly increasing the overall structural strength of the chair. Brief description of the drawings To explain more clearly the embodiments of this disclosure or the technical solutions in the related art, the drawings to be used in the description of the embodiments or related art are briefly presented below. Obviously, the drawings in the following description are only embodiments of this disclosure. Those skilled in the art can, without any creative effort, also obtain other drawings based on the provided drawings. Other features, objects, and advantages of this disclosure will become more apparent upon reading the detailed, non-limiting descriptions made with reference to the following drawings: FIG.1 is a schematic structural diagram of a quick-assembly chair according to an embodiment of the present disclosure; FIG.2 is a schematic diagram of a rotation path of a first arm assembly according to an embodiment of the present disclosure; FIG.3 is a schematic diagram of a rotation path of a second arm assembly according to an embodiment of the present disclosure; FIG.4 is a schematic diagram of a rotation path of a first arm assembly and a backup frame assembly according to an embodiment of the present disclosure; FIG.5 is a schematic diagram of a triangle according to an embodiment of the present disclosure; FIG.6 is a schematic diagram of another triangle according to an embodiment of the present disclosure; FIG.7 is a schematic structural diagram of an under-seat support flange according to an embodiment of the present disclosure; FIG.8 is a schematic diagram showing a general structure of an under-seat support flange and seat frame assembly in the disengaged state according to an embodiment of the present disclosure; FIG.9 is a structural schematic diagram showing an engagement between an under-seat support flange and a seat frame assembly according to an embodiment of the present disclosure; FIG.10 is a schematic diagram showing a general structure of an under-seat support flange and seat frame assembly in the engaged state according to an embodiment of the present disclosure. Detailed description The present disclosure will be described in detail below in conjunction with specific embodiments. The following embodiments will assist those skilled in the art in a better understanding of the present disclosure, but do not limit it in any way. It should be noted that, for those skilled in the art, various distortions and improvements can be made without departing from the concept of the present disclosure. All of these fall within the scope of protection of the present disclosure. The terms "first," "second," "third," "fourth," and the like (if any) in the specification and claims of this disclosure and in the preceding drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used may be interchanged where appropriate, so that the embodiments of the invention described herein, for example, may be implemented in a different order than illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those clearly enumerated steps or units but may include other steps or units not clearly enumerated or inherent in such processes, methods, products, or apparatus. The realizations of the present disclosure provide a quick-assembly chair, which aims to solve existing problems in the related art. In the specification, when the first armrest assembly and the second armrest assembly are symmetrical, the specification only describes the first armrest assembly. Based on the description of the first armrest assembly and its associated components in this specification, it is readily conceivable for those skilled in the art to make the same arrangement in the second armrest assembly and its associated components so that the first and second armrest assemblies are symmetrical. Therefore, although the specification primarily describes the first armrest assembly, the complete structure includes more than just the first armrest assembly. The second armrest assembly can be configured in the same way as the first armrest assembly and is also part of the structure. Specific embodiments will be used below to provide a detailed explanation of the technical solution in this disclosure and how it addresses the technical problems mentioned above. The specific embodiments below may be combined, and the same or similar concepts or processes may or may not be described in detail in some embodiments. Embodiments of this disclosure will be described below in conjunction with accompanying drawings. As shown in FIG. 1 and FIG. 2, a quick-assembly chair provided by this disclosure includes: A seat frame assembly (1). Specifically, the seat frame assembly (1) is the core component of the chair, supporting the user's hips. It is made of strong metal or reinforced plastic to ensure sufficient load-bearing capacity and durability. The seat frame assembly (1) is designed to connect with the backrest frame assembly (2), the first armrest assembly (3), and the second armrest assembly (4) to form a complete chair structure. A backrest frame assembly (2); the backrest frame assembly (2) is rotatable relative to the seat frame assembly (1), and the backrest frame assembly (2) includes a first limiting portion (14); the first limiting portion (14) is a limiting protrusion or a concave limiting structure. The seat frame assembly (1) is connected to the backrest frame assembly (2), and the backrest frame assembly (2) is rotatable relative to the seat frame assembly (1). Specifically, the backrest frame assembly (2) is used to support the user's back. The backrest frame assembly (2) is made of metal, plastic, or another lightweight but strong material. The backrest frame assembly (2) may vary in shape and size depending on the chair design, but it typically includes one or more support rods and a back support panel or mesh material. The seat frame assembly (1) and the backrest frame assembly (2) in this disclosure are integral structures, and the seat frame assembly (1) and the backrest frame assembly (2) may be rotatable relative to each other to change the angle between them. The angle between them changes within a range of at least 0°–90°. When the angle between them is 0°, the seat frame assembly (1) and the backrest frame assembly (2) are folded together, resulting in the smallest volume.When the angle between the two is 90°, the seat frame assembly (1) and the backrest frame assembly (2) can provide lumbar support for the user. The angle between the seat frame assembly (1) and the backrest frame assembly (2) can also be 100°, 110°, 120°, 130°, or any other value not listed. Those skilled in the art can adjust the angle between the seat frame assembly (1) and the backrest frame assembly (2) according to design requirements. The first armrest assembly (3) is located on one side of the seat frame assembly (1) and the backrest frame assembly (2). Specifically, the first armrest assembly (3) is located on the first side of the seat frame assembly (1) and the backrest frame assembly (2) to provide additional support to the user. The first armrest assembly (3) is typically designed to match the style and color of the seat frame assembly (1) and the backrest frame assembly (2). The second armrest assembly (6) is located on a second side of the seat frame assembly (1) and the backrest frame assembly (2). Specifically, the second armrest assembly (6) is similar to the first armrest assembly (3) but is located on the other side of the chair. It also provides additional support to the user and has a design and features that match the first armrest assembly. The first armrest assembly (3) includes a third limiting portion (16), the third limiting portion (16) is used to connect with the first limiting portion (14) to keep the backrest frame assembly (2) stationary with respect to the first armrest assembly (3). Specifically, the first limiting portion (14) is used to connect the first armrest assembly (3) and restrict its rotation or movement. The third limiting portion (16) works in conjunction with the first limiting portion (14) to quickly fix the relative position between the backrest frame assembly (2) and the first armrest assembly (3), making the operation faster, more convenient, and simpler, thus improving the ease of use of the chair assembly process. In some embodiments, the backrest frame assembly (2) is further provided with a second limiting portion (15), and the second armrest assembly (6) includes a fourth limiting portion (17). The fourth limiting portion (17) is used to connect with the second limiting portion (15) to keep the backrest frame assembly stationary relative to the second armrest assembly (6). The second limiting portion (15) is used to connect the second armrest assembly (6) and restrict its rotation or movement. The second limiting portion (15) allows for faster, more convenient, and simpler assembly between the backrest frame assembly (2) and the second armrest assembly (6), thereby improving the ease of use of the chair assembly process. In some embodiments, the first armrest assembly (3) has a first connection point (4); the first armrest assembly (3) is configured to connect to the seat frame assembly (1) and the backrest frame assembly (2) at the first connection point (4) by means of a first movable component (5). The first armrest assembly (3) has a first connection point (4), which is a key point for connecting to the seat frame assembly (1) and the backrest frame assembly (2). Through the first movable component (5), the first armrest assembly (3) can be securely attached to the chair. The first connection point (4) is a point where the first armrest assembly (3) connects to the seat frame assembly (1) and the backrest frame assembly (2).The first connection point (4) is typically designed to accommodate the first moving component (5) to ensure that the first armrest assembly (3) can be securely attached to the chair. The first connection point (4) may be a hole, slot, or other connecting structure to match the first moving component (5). The first moving component (5) may be a bolt, pin, clip, or other type of connector that securely connects the first armrest assembly (3) to the seat frame assembly (1) and the backrest frame assembly (2). The second armrest assembly (6) has a second connection point (7); the second armrest assembly (6) is configured to connect with the seat frame assembly (1) and the backrest frame assembly (2) at the second connection point (7) by means of a second moving component (8). The second armrest assembly (6) has a second connection point (7) for connecting with the seat frame assembly (1) and the backrest frame assembly (2). The second armrest assembly (6) and the first armrest assembly (3) are respectively located on the left and right sides of the seat frame assembly (1) and the backrest frame assembly (2) to keep the seat frame assembly (1) and the backrest frame assembly (2) stationary from different directions and to accommodate the user.Consequently, the second connection point (7) and the first connection point (4) are also arranged on opposite sides of the seat frame assembly (1) and the backrest frame assembly (2). The second movable component (8) has the same structure as the first movable component (5), and both are respectively arranged on the left and right sides of the seat frame assembly (1) and the backrest frame assembly (2). In some embodiments, the first movable component (5) is connected to the first armrest assembly (3) and has a certain degree of freedom. When the first movable component (5) is connected to the seat frame assembly (1) and the backrest frame assembly (2) at the first connection point (4), the first armrest assembly (3) can be secured to the seat frame assembly (1) and the backrest frame assembly (2) by a simple action such as pressing, and the assembly efficiency is greatly improved. In some embodiments, as shown in FIG. 1, the quick-mount chair also includes a rear seat support bar (9). A rear seat support bar (9) is detachably installed at the connection between the seat frame assembly (1) and the backrest frame assembly (2). Specifically, the rear seat support bar (9) is used to reinforce the seat frame assembly (1) and the backrest frame assembly (2). The rear seat support bar (9) has connection ports at both ends, with the first end connecting to the first moving component (5) and the second end connecting to the second moving component (8). The rear seat support bar (9) allows the seat frame assembly (1), backrest frame assembly (2), first armrest assembly (3), and second armrest assembly (6) to connect as a whole, greatly improving the overall strength of the chair. In some embodiments, as shown in FIG. 1, the quick-mount chair also includes a front seat support bar (10). The front seat support bar (10) is rotatably attached to the seat frame assembly (1). Specifically, the included angle between the front seat support bar (10) and the seat frame assembly (1) can be 0°, 100°, 110°, 120°, or any other obtuse angle. When the included angle between the front seat support bar (10) and the seat frame assembly (1) is 0°, the chair's volume is minimal, making it easy to transport. When the included angle between the front seat support bar (10) and the seat frame assembly (1) is at least an obtuse angle, the position of the front seat support bar (10) relative to the seat frame assembly (1) can be fixed, allowing it to withstand greater forces and provide greater stability. In some embodiments, the front seat support bar (10) further includes a first fixing pin (11) and a second fixing pin (12); the first fixing pin (11) is used to connect the first armrest assembly (3) and allow the first armrest assembly (3) to rotate about the first fixing pin (11); the second fixing pin (12) is used to connect the second armrest assembly (6) and allow the second armrest assembly (6) to rotate about the second fixing pin (12). The circle in FIG. 2 shows a schematic rotation path of the first armrest assembly (3). The circle in FIG. 3 shows a schematic rotation path of the second armrest assembly (6).As an example, the first armrest assembly (3) and the second armrest assembly (6) are each allowed to rotate about their respective locking pins, making chair assembly more convenient. Figure 4 is a schematic diagram of the rotation paths of the first armrest assembly (3) and the backrest frame assembly (2). In Figure 4, the larger circle represents the rotation path of the first armrest assembly (3), and the smaller circle represents the rotation path of the backrest frame assembly (2). As can be seen in Figure 4, there is an overlap in the rotation ranges of the first armrest assembly (3) and the backrest frame assembly (2), meaning that the first armrest assembly (3) and the backrest frame assembly (2) can be coupled and locked at their intersection.This allows the relative position of the first armrest assembly (3) and the backrest frame assembly (2) to be fixed, as well as its fixed position with respect to the seat frame assembly (1), thus achieving quick assembly. In some embodiments, the connection point between the front seat support bar (10) and the seat frame assembly (1), the first fixing pin (11), and the first connection point (4) together define a triangle. Figures 5 and 6 show two different structures for the triangular area enclosed by the front seat support bar (10), the seat frame assembly (1), and the first armrest assembly (3). Figures 5 and 6 show that the shape of the front seat support bar (10) can be either a straight line or a non-straight line. In some embodiments, the first armrest assembly (3) further includes a seat support latch (13); the first armrest assembly (3) is configured to be fixed to the seat frame assembly (1) such that the seat support latch (13) engages with the seat frame assembly (1). The seat support latch (13) makes the assembly of the first armrest assembly (3) and the seat frame assembly (1) more secure, thereby improving the durability of the chair and preventing problems such as deformation that can occur during long-term use of the seat frame assembly (1). In some embodiments, the number of seat support latches (13) is not less than two, and the first armrest assembly (3) is configured to be fixed to the seat frame assembly (1) such that one or more of the seat support latches (13) are in contact with both surfaces of the seat frame assembly (1). The number of seat support latches (13) being not less than two improves the support of the seat frame assembly (1) and ensures a more even distribution of force within the seat frame assembly (1), thereby reducing the risk of deformation. As shown in Figure 7, at least one of the seat support latches (13) comes into contact with two surfaces of the seat frame assembly (1) when the first armrest assembly (3) is fixed to the seat frame assembly (1).This not only improves the support of the seat frame assembly (1) but also restricts the lateral displacement of the seat frame assembly (1) relative to the first armrest assembly (3), thus making the overall chair structure more stable. Figure 8 is a schematic diagram showing the seat support latch (13) and the seat frame assembly (1) uncoupled, and a circular section in Figure 8 corresponds to the section shown in Figure 7. It can be seen in Figure 8 that the seat support latch (13) also limits the rotation angle of the first armrest assembly (3) and the seat frame assembly (1). Figure 9 is a schematic diagram showing the seat support latch (13) coupled to the seat frame assembly (1), and it can be seen that the connection is more secure when the two are coupled.Figure 10 is a schematic diagram showing the general structure when the seat support latch (13) is engaged with the seat frame assembly (1), and a circular section in Figure 10 corresponds to the section shown in Figure 9. Figure 10 shows that both the first armrest assembly (3) and the seat frame assembly (1) are more securely fastened. The third limiting portion (16) has a plurality of positioning holes for positioning the backrest frame assembly (2), allowing the backrest frame assembly (2) to be tilted into multiple positions. The various embodiments of this specification are described step by step, with each embodiment focusing on its differences from other embodiments, and identical or similar parts among the various embodiments may be referenced. The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the spirit and scope of this disclosure. Accordingly, this disclosure is not intended to be limited to the embodiments shown, but is given the broadest scope consistent with the principles and features described herein. The following describes one or more specific embodiments of this disclosure. It should be understood that this disclosure is not limited to the specific embodiments above, and practitioners skilled in the art may make various distortions or modifications within the scope of the claims, which do not affect the substance of this disclosure.

Claims

1. A quick-assembly chair, comprising a seat frame assembly (1), a backrest frame assembly (2), a first armrest assembly (3), and a second armrest assembly (6), wherein the seat frame assembly (1) is connected to the backrest frame assembly (2), wherein the backrest frame assembly (2) is rotatable with respect to the seat frame assembly (1), and the backrest frame assembly (2) comprises a first limiting portion (14); wherein the first armrest assembly (3) is located on a first side of the seat frame assembly (1) and the backrest frame assembly (2); wherein the second armrest assembly (6) is located on a second side of the seat frame assembly (1) and the backrest frame assembly (2); and wherein the first armrest assembly (3) comprises a third limiting portion (16),The third limiting portion (16) is used to connect with the first limiting portion (14) to keep the backrest frame assembly (2) stationary with respect to the first armrest assembly (3).

2. Quick-assembly chair according to claim 1, wherein the backrest frame assembly (2) further comprises a second limiting portion (15), and the second armrest assembly (6) comprises a fourth limiting portion (17); this fourth limiting portion (17) is used to connect with the second limiting portion (15) to keep the backrest frame assembly (2) stationary with respect to the second armrest assembly (6).

3. Quick-assembly chair according to claim 1, wherein the first limiting portion (14) is a limiting protrusion or a concave limiting structure.

4. Quick-assembly chair according to claim 1,wherein the first armrest assembly (3) has a first connection point (4); wherein the first armrest assembly (3) is configured to connect to the seat frame assembly (1) and the backrest frame assembly (2) at the first connection point (4) by means of a first movable component (5); and wherein the second armrest assembly (6) has a second connection point (7); wherein the second armrest assembly (6) is configured to connect to the seat frame assembly (1) and the backrest frame assembly (2) at the second connection point (7) by means of a second movable component (8).

5. Quick-assembly chair according to claim 1, further comprising: a rear seat support bar (9),wherein the rear seat support bar (9) is detachably installed at the connection point between the seat frame assembly (1) and the backrest frame assembly (2).

6. Quick-assembly chair according to claim 1, further comprising: a front seat support bar (10), wherein the front seat support bar (10) is rotatably fixed to the seat frame assembly (1).

7. Quick-assembly chair according to claim 6,wherein the front seat support bar (10) further comprises a first fixing pin (11) and a second fixing pin (12); wherein the first fixing pin (11) is used to connect the first armrest assembly (3) and allow the first armrest assembly (3) to rotate about the first fixing pin (11); wherein the second fixing pin (12) is used to connect the second armrest assembly (6) and allow the second armrest assembly (6) to rotate about the second fixing pin (12).

8. Quick-assembly chair according to claim 7, wherein the connection point between the front seat support bar (10) and the seat frame assembly (1), the first fixing pin (11), and the first connection point (4) form a triangle.

9. Quick-assembly chair according to claims 1 to 8,wherein the first armrest assembly (3) further includes a plurality of seat support latches (13); wherein the first armrest assembly (3) is configured to be fixed to the seat frame assembly (1) such that the seat support latches (13) engage with the seat frame assembly (1).

10. Quick-assembly chair according to claim 9, wherein the number of seat support latches (13) is not less than two; wherein the first armrest assembly (3) is configured to be fixed to the seat frame assembly (1) such that one or more of the seat support latches (13) are in contact with both surfaces of the seat frame assembly (1).

11. Quick-assembly chair according to claim 1, wherein the third limiting portion (16) has a plurality of positioning holes for positioning the backrest frame assembly (2).so that the backrest frame assembly (2) can be tilted into multiple different positions.