Adjustable aluminum chair easy to disassemble and assemble

Abstract

The utility model relates to an adjustable aluminum chair easy to disassemble and assemble. The adjustable aluminum chair comprises a chair frame, a cushion assembly and a backrest assembly, wherein the cushion assembly and the backrest assembly are detachably arranged on the chair frame; the chair frame comprises two front supporting aluminum profiles, two rear supporting aluminum profiles and an upper connecting aluminum profile which is detachably connected between the middle parts of the two front supporting aluminum profiles; a first connecting profile groove is formed in the front supporting aluminum profile, a first bolt connecting hole and a second bolt connecting hole are formed in the first locking block, and a first sliding block connected with the first locking block is arranged in the first connecting profile groove. The backrest assembly comprises a U-shaped connecting frame and a backrest, and a second sliding block connected with the U-shaped connecting frame is arranged in the first connecting profile groove. According to the technical scheme, the chair frame can be disassembled into a plurality of aluminum profiles, the cushion assembly and the backrest assembly are detachably installed on the chair frame, the packaging size is reduced, carrying and transportation are convenient, the profile groove structures on the aluminum profiles are matched with the sliding blocks, and the vertical heights of the cushion and the backrest can be adjusted while quick disassembly and assembly of all the components are achieved.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to an adjustable aluminum chair that is easy to assemble and disassemble. Background Technology

[0002] Current office chairs are usually made of wood or plastic. Wooden chairs are heavy and bulky, making them inconvenient to move and transport. Plastic chairs are easy to break and bulky, resulting in large packaging and high transportation costs.

[0003] In addition, some existing seats are inconvenient to disassemble and assemble.

[0004] Furthermore, the height of some chairs' backrests and seat cushions cannot be adjusted, making them unsuitable for users of different heights. Summary of the Invention

[0005] To address the aforementioned issues, the present invention aims to provide an easily detachable and adjustable aluminum chair. The chair frame is a substitute aluminum profile assembly structure, utilizing the cooperation of profile grooves and sliders / slide bars to achieve quick assembly and disassembly. It also supports continuous adjustment of the seat and backrest heights, and features lightweight, high material strength, convenient assembly and disassembly, support for seat and backrest height adjustment, and small packaging size.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An easily detachable adjustable aluminum chair, characterized in that it includes a chair frame, and a seat cushion assembly and a backrest assembly that are detachably mounted on the chair frame;

[0008] The chair frame includes two front support aluminum profiles that tilt backward and are supported on the ground, and two rear support aluminum profiles that are vertically supported on the lower back side of the two front support aluminum profiles, and an upper connecting aluminum profile that is detachably connected between the middle of the two front support aluminum profiles; the front support aluminum profiles and the rear support aluminum profiles are detachably connected.

[0009] A first connecting profile groove is formed on the side of the front support aluminum profile facing the seat cushion assembly and backrest assembly. A second connecting profile groove is provided on both sides of the upper end of the upper connecting aluminum profile. A third connecting profile groove is formed on the lower end of the upper connecting aluminum profile opposite to the first connecting profile groove. A first locking block is provided between this surface and the front support aluminum profile. The first locking block is provided with a first bolt connection hole and a second bolt connection hole corresponding to the first connecting profile groove and the third connecting profile groove, respectively. A first slider connected to the first locking block is provided in the first connecting profile groove. The first slider is provided with a first assembly hole corresponding to the first bolt connection hole.

[0010] The seat cushion assembly is mounted on the upper connecting aluminum profile and includes a seat cushion and multiple connecting pieces fixed to the bottom of the seat cushion. The connecting pieces are detachably connected to the groove of the second connecting profile.

[0011] The backrest assembly includes a U-shaped connecting frame and a backrest mounted on the U-shaped connecting frame. The U-shaped connecting frame has multiple third bolt connection holes on both sides. The first connecting profile groove has a second slider corresponding to the third bolt connection hole. The second slider has a second assembly hole corresponding to the third bolt connection hole.

[0012] Preferably, both the first slider and the second slider include a trapezoidal main body disposed in the first connecting profile groove, and a mating part extending into the groove opening, with retaining edges that mate with the main body being constructed on both sides of the groove opening.

[0013] Preferably, the first locking block is in the shape of a right angle, and the two right angle surfaces are attached to the front support aluminum profile and the upper connecting aluminum profile. The inclined surface of the first locking block is bent inward and has an installation opening. An installation cavity communicating with the installation opening is formed inside the first locking block. Two installation grooves are provided in the installation cavity corresponding to the two right angle surfaces. The first bolt connection hole and the second bolt connection hole are respectively provided through the two installation grooves.

[0014] Preferably, the connecting piece includes a connecting plate and a downwardly bent folding plate. The connecting plate is attached to the bottom of the cushion and has strip-shaped fixing holes for connecting with the cushion body. The folding plate is attached to the surface where the second connecting profile groove is located and has multiple fourth bolt connection holes corresponding to the second connecting profile groove. At least two connecting pieces are respectively connected to the second connecting profile grooves on both sides of the upper connecting aluminum profile in opposite directions.

[0015] Preferably, the inner wall of the U-shaped connecting frame is provided with a mounting base, and a gripping hole is provided above the mounting base. Mounting blocks are protruding on both sides of the mounting base, and the mounting blocks are provided with slots with openings at the top. The slots have a T-shaped cross-section. The backrest includes two secondary backrests spaced apart. The secondary backrests include a backrest frame and a backrest pad installed on the backrest frame. A connecting base is provided on the back side of the backrest frame, and a locking block is provided at the outer end of the connecting base to fit into the slot along the upper end of the slot.

[0016] Preferably, a lower connecting aluminum profile is detachably connected between the two front support aluminum profiles below the upper connecting aluminum profile. The two sides of the lower connecting aluminum profile are connected to the front support aluminum profiles through second locking blocks. A third slider connected to the second locking block is provided in the groove of the first connecting profile.

[0017] Preferably, the lower connecting aluminum profile is detachably provided with a pedal, which is connected to the lower connecting aluminum profile by multiple connecting plates, and the bottom of the pedal is formed with multiple pads that are fixedly connected to the connecting plates of the connecting plates.

[0018] Preferably, a fourth connecting profile groove is formed on the back side of the front supporting aluminum profile, and a fifth connecting profile groove is provided on the lower end face of the rear supporting aluminum profile corresponding to the fourth connecting profile groove. The third locking block is adapted to fit between the back side of the front supporting aluminum profile and the lower end face of the rear supporting aluminum profile, and is connected to the fourth connecting profile groove and the fifth connecting profile groove.

[0019] Preferably, a rear connecting aluminum profile is detachably provided between the two rear supporting aluminum profiles via an L-shaped assembly block; the L-shaped assembly block includes an integrally formed first slide bar and a second slide bar, a sixth connecting profile groove is provided on the lower end surface of the rear supporting aluminum profile, and a seventh connecting profile groove is provided on the side of the rear supporting aluminum profile facing the rear supporting aluminum profile, the first slide bar and the second slide bar are respectively slidably engaged on the sixth connecting profile groove and the seventh connecting profile groove, and both the first slide bar and the second slide bar are provided with multiple bolt connection holes.

[0020] Preferably, the upper and lower ends of the front support aluminum profile are respectively fitted with a first protective sleeve and a second protective sleeve, and the lower end of the rear support aluminum profile is provided with a third protective sleeve, and the lower end of the third protective sleeve is provided with a roller.

[0021] The present invention adopts the above technical solution and has the following beneficial effects:

[0022] ① The chair frame of the aluminum chair consists of a front support aluminum profile, a rear support aluminum profile, and an upper connecting aluminum profile. The seat cushion assembly is installed on the upper connecting aluminum profile, and the upper connecting aluminum profile is assembled with the first slider via a locking block. The U-shaped connecting frame of the backrest assembly is assembled with the second slider. Through the profile groove structure of the aluminum profile, the seat cushion assembly, backrest assembly, and chair frame are quickly assembled by the slider cooperating with the first connecting profile groove of the front support aluminum profile. The slider is pressed into the profile groove by bolts. Therefore, loosening the bolts allows the slider to move in the profile groove, improving the efficiency of disassembly and assembly. At the same time, by moving the slider, the height of the seat cushion and backrest can be adjusted, thereby adapting to users of different heights and improving comfort.

[0023] ② The lower connecting aluminum profile is also equipped with a pedal. At the same time, the lower connecting aluminum profile can slide in the profile groove via a slider and move up and down relative to the front supporting aluminum profile, thereby adjusting the height of the pedal and improving the user experience.

[0024] ③ The rear connecting aluminum profile is quickly assembled onto the rear supporting aluminum profile by sliding the L-shaped assembly block and locked, achieving quick assembly and disassembly.

[0025] ④ The two secondary backrests of the backrest assembly are connected to the U-shaped connecting frame by a snap-fit ​​method, which is simple to disassemble and assemble; at the same time, the chair frame can be disassembled into multiple aluminum profiles. The connecting pieces can be removed from the profile grooves to make the seat cushion and footrest detachable, so that the whole aluminum chair can be disassembled into many small parts, greatly reducing the packaging volume and reducing transportation costs.

[0026] ⑤ The front support aluminum profile is fixedly connected to each other by locking blocks, which has good structural stability. The bolts pass through the mounting port of the locking block from the inside and are pressed into the profile groove. The bolts are well concealed, more beautiful, and easy to disassemble and assemble.

[0027] ⑥ Except for the seat and backrest cushions, the rest of the aluminum chair is made of aluminum. The chair frame is mainly composed of aluminum profiles. Therefore, aluminum chairs are lightweight, easy to move, and have high material strength and are not easy to break. In addition, casters are set at the bottom of the rear support aluminum profile, so the aluminum chair can be pushed and moved when it is moved, which is very convenient. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of an adjustable aluminum chair that is easy to assemble and disassemble.

[0029] Figure 2 This is a three-dimensional structural diagram of an aluminum chair frame.

[0030] Figure 3 This is a schematic diagram showing the fit between the slider and the profile groove.

[0031] Figure 4 This is a schematic diagram showing the arrangement of the sliders in the front support aluminum profile.

[0032] Figure 5 This is a schematic diagram of the three-dimensional structure of the slider.

[0033] Figure 6 This is a three-dimensional structural diagram of the aluminum profile connecting to the top.

[0034] Figure 7 This is a schematic diagram of the three-dimensional structure of the locking block.

[0035] Figure 8 This is a schematic diagram showing the installation of the connecting piece and the chair frame.

[0036] Figure 9 This is a schematic diagram of the installation of the backrest and the U-shaped connecting frame.

[0037] Figure 10 This is a schematic diagram showing the arrangement of the slots on the U-shaped connecting frame.

[0038] Figure 11 This is a schematic diagram showing the arrangement of the card blocks on the back.

[0039] Figure 12 This is a three-dimensional structural diagram of the aluminum chair frame from another perspective.

[0040] Figure 13 This is a three-dimensional structural diagram of an L-shaped assembly block.

[0041] Figure 14This is a schematic diagram showing the arrangement of the pads on the pedal. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] like Figures 1-14 The example shown is an adjustable aluminum chair that is easy to assemble and disassemble, including a chair frame, and a seat cushion assembly and a backrest assembly that are detachably mounted on the chair frame.

[0048] The chair frame includes two front support aluminum profiles 1 that tilt backward and are supported on the ground, and two rear support aluminum profiles 2 that are vertically supported on the lower back side of the two front support aluminum profiles 1, and an upper connecting aluminum profile 3 that is detachably connected between the middle of the two front support aluminum profiles 1; the front support aluminum profiles 1 and the rear support aluminum profiles 2 are detachably connected.

[0049] A first connecting profile groove 4 is formed on the side of the front support aluminum profile 1 facing the seat cushion assembly and backrest assembly. A second connecting profile groove 5 is provided on both sides of the upper end of the upper connecting aluminum profile 3. A third connecting profile groove 6 is formed on the lower end of the upper connecting aluminum profile 3 opposite to the first connecting profile groove 4. A first locking block 7 is provided between this surface and the front support aluminum profile 1. The first locking block 7 is provided with a first bolt connection hole 8 and a second bolt connection hole 9 corresponding to the first connecting profile groove 4 and the third connecting profile groove 6, respectively. A first slider 10 connected to the first locking block 7 is provided in the first connecting profile groove 4. The first slider 10 is provided with a first assembly hole corresponding to the first bolt connection hole 8.

[0050] The seat cushion assembly is mounted on the upper connecting aluminum profile 3, including a seat cushion 11 and multiple connecting pieces 12 fixed to the bottom of the seat cushion 11. The connecting pieces 12 are detachably connected to the second connecting profile groove 5.

[0051] The backrest assembly includes a U-shaped connecting frame 13 and a backrest 14 mounted on the U-shaped connecting frame 13. The U-shaped connecting frame 13 has multiple third bolt connection holes on both sides. The first connecting profile groove 4 has a second slider 15 corresponding to the third bolt connection hole. The second slider 15 has a second assembly hole corresponding to the third bolt connection hole.

[0052] In the above technical solution, the chair frame, seat cushion assembly, and backrest assembly are all independent and detachable components, and the chair frame can be disassembled into multiple aluminum profiles, which greatly reduces the packaging volume and facilitates handling and transportation.

[0053] Multiple aluminum profiles are connected by locking blocks. The profile grooves on the aluminum profiles are tightened with bolts for easy assembly and disassembly. Furthermore, a first slider and a second slider are set on the first connecting profile groove of the front support aluminum profile. The seat cushion assembly and backrest assembly can be pre-installed with the first slider and the second slider respectively and then slid into the first connecting profile groove to be installed with the chair frame, achieving quick assembly and disassembly and simplifying the assembly process.

[0054] In use, loosen the bolts that tighten the slider, and the slider slides on the first connecting profile groove to adjust the up and down position of the seat and backrest, which can accommodate users of different heights.

[0055] In addition, the chair is mainly made of aluminum, so this aluminum chair is lightweight, easy to move, and has high material strength and is not easy to break.

[0056] Furthermore, both the first slider 10 and the second slider 15 include a trapezoidal main body 16 disposed within the first connecting profile groove 4, and a mating part 17 extending into the groove opening. Side flanges 18 that mate with the main body 16 are constructed on both sides of the groove opening. In this technical solution, the trapezoidal main body and the side flanges of the profile groove form an anti-detachment structure to prevent the slider from coming out of the groove opening; the mating part fits snugly against the outside, facilitating tight fitting during bolt connection.

[0057] Furthermore, the first locking block 7 is right-angled, with its two right-angled surfaces abutting the front support aluminum profile 1 and the upper connecting aluminum profile 3. The inclined surface of the first locking block 7 bends inward and forms an installation opening 19. An installation cavity communicating with the installation opening 19 is formed inside the first locking block 7. Two installation grooves 20 are provided in the installation cavity corresponding to the two right-angled surfaces. The first bolt connection hole 8 and the second bolt connection hole 9 are respectively passed through the two installation grooves 20. In this technical solution, the right-angled surfaces of the first locking block simultaneously abut the front support and the upper connecting aluminum profile, and are locked bidirectionally through the two bolt holes, improving the joint strength. The curved inclined surface of the locking block facilitates bolt installation and removal, the installation cavity hides the bolts, and the appearance is simple and scratch-resistant.

[0058] Furthermore, the connecting piece 12 includes a connecting plate 21 and a downwardly bent folding plate 22. The connecting plate 21 is attached to the bottom of the seat cushion 11, and has strip-shaped fixing holes 23 for connecting with the main body of the seat cushion 11. The folding plate 22 is attached to the surface where the second connecting profile groove 5 is located, and has multiple fourth bolt connection holes corresponding to the second connecting profile groove 5. At least two connecting pieces 12 are respectively connected to the second connecting profile grooves 5 on both sides of the upper connecting aluminum profile 3 in opposite directions. In this technical solution, the setting of the strip-shaped fixing holes allows the seat cushion and the connecting plate to be finely aligned and connected; the connecting pieces are installed on the upper connecting aluminum profile on both sides, increasing the support area of ​​the connecting pieces, distributing the load of the seat cushion, and avoiding unilateral deformation. The multiple holes on the folding plate are used to screw in bolts to press and connect with the second connecting profile groove, and the inclined arrangement design facilitates disassembly and assembly.

[0059] Furthermore, the inner wall of the U-shaped connecting frame 13 is provided with a mounting base 24, and a gripping hole 25 is provided above the mounting base 24. Mounting blocks 26 protrude from both sides of the mounting base 24, and the mounting blocks 26 are provided with slots 27 with openings at the top. The slots 27 have a T-shaped cross-section. The backrest 14 includes two spaced-apart sub-backrests, each including a backrest frame 28 and a backrest pad 29 mounted on the backrest frame 28. A connecting base 30 is provided on the back side of the backrest frame 28, and a locking block 31 is provided at the outer end of the connecting base 30 to fit into the slot 27 along its upper end. In this technical solution, the backrest assembly can be further disassembled into two sub-backrests and a U-shaped connecting frame, further reducing the packaging volume. Furthermore, the T-shaped slot of the U-shaped connecting frame engages with the locking block, enabling quick assembly and disassembly of the backrest, which is very convenient. It also allows for individual replacement of the backrest pad of the sub-backrest, reducing maintenance costs. The gripping hole facilitates holding the U-shaped connecting frame, making it easier to move the chair.

[0060] Furthermore, a lower connecting aluminum profile 32 is detachably connected between the two front supporting aluminum profiles 1 below the upper connecting aluminum profile 3. The two sides of the lower connecting aluminum profile 32 are connected to the front supporting aluminum profiles 1 via second locking blocks 71. A third slider 33 connected to the second locking blocks 71 is provided in the first connecting profile groove 4. A foot pedal 34 is detachably provided on the lower connecting aluminum profile 32. The foot pedal 34 is connected to the lower connecting aluminum profile 32 via multiple connecting pieces 12. Multiple pads 35 are formed at the bottom of the foot pedal 34 and are fixedly connected to the connecting plates 21 of the connecting pieces 12. In this technical solution, the function is expanded: the lower connecting aluminum profile is reused as a footrest base, adding a footrest function.

[0061] In the above technical solution, the lower connecting aluminum profile and the upper connecting aluminum profile form a double support structure, improving the structural stability of the chair frame. The third slider and the second locking block reuse the cooperation structure of the first slider and the first locking block, thereby enabling the footrest mounted on the lower connecting aluminum profile to be height-adjustable, accommodating users with different leg lengths and improving comfort. Furthermore, the connecting piece and the footrest pad reuse the seat cushion fixing solution, reducing production costs.

[0062] Furthermore, a fourth connecting profile groove 36 is formed on the back side of the front supporting aluminum profile 1, and a fifth connecting profile groove 37 is provided on the lower end face of the rear supporting aluminum profile 2 corresponding to the fourth connecting profile groove 36. The third locking block 72 is adapted to fit between the back side of the front supporting aluminum profile 1 and the lower end face of the rear supporting aluminum profile 2, and is connected to the fourth connecting profile groove 36 and the fifth connecting profile groove 37. In this technical solution, the front supporting aluminum profile and the rear supporting aluminum profile reuse the connection structure of the locking block between the front supporting aluminum profile and the upper connecting aluminum profile, which has the characteristics of stable fixing structure and convenient disassembly.

[0063] Furthermore, a rear connecting aluminum profile 39 is detachably provided between the two rear supporting aluminum profiles 2 via an L-shaped assembly block 38. The L-shaped assembly block 38 includes an integrally formed first slide bar 40 and a second slide bar 41. A sixth connecting profile groove 42 is provided on the lower end surface of the rear connecting aluminum profile 39, and a seventh connecting profile groove 43 is provided on the side of the rear supporting aluminum profile 2 facing the rear supporting aluminum profile 2. The first slide bar 40 and the second slide bar 41 are respectively slidably engaged in the sixth connecting profile groove 42 and the seventh connecting profile groove 43. Both the first slide bar 40 and the second slide bar 41 are provided with multiple bolt connection holes. In this technical solution, the rear connecting aluminum profile improves the support stability of the rear supporting aluminum profile. The first slide bar of the L-shaped assembly block slides into the sixth connecting profile groove to assemble with the rear connecting aluminum profile, and then the second slide bar slides into the seventh connecting profile groove to achieve quick assembly and disassembly of the rear connecting aluminum profile and the rear supporting aluminum profile. Furthermore, the height of the rear connecting aluminum profile is adjustable and can be adjusted according to support requirements.

[0064] Furthermore, the upper and lower ends of the front support aluminum profile 1 are respectively fitted with a first protective sleeve 44 and a second protective sleeve 45, and the lower end of the rear support aluminum profile 2 is provided with a third protective sleeve 46, and the lower end of the third protective sleeve 46 is provided with a roller 47. In this technical solution, the protective sleeves protect the ends of the aluminum profiles from wear and facilitate support, and the rollers facilitate the movement of the chair and improve handling efficiency.

[0065] It should be noted that all aluminum profiles in this case are square aluminum profiles, and their profile slots are identical. The front support aluminum profile has two profile slots, while the remaining profiles have three. Although the locking blocks are positioned differently, their structures are the same. The components connected to the sliders differ, but their structures are also the same; the cross-sections of the first and second slide bars of the L-shaped assembly block are identical to those of the slider. This high reusability of common components reduces costs.

[0066] In this specific embodiment, to address the problems of inconvenient disassembly and assembly of existing seats, as well as the cumbersome adjustment of seat cushions and backrests, the above solution uses an aluminum seat. The chair frame can be disassembled into multiple aluminum profiles, and the seat cushion assembly and backrest assembly can be detached and installed on the chair frame, greatly reducing the packaging volume and facilitating handling and transportation. Furthermore, by utilizing the profile groove structure of the aluminum profiles in conjunction with the slider, quick disassembly and assembly of each component can be achieved, while the height of the seat cushion, backrest, and footrest can be adjusted to suit different user needs.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An adjustable aluminum chair that is easy to disassemble, characterized by: Includes a chair frame, as well as a seat cushion assembly and a backrest assembly that can be detachably mounted on the chair frame; The chair frame includes two front support aluminum profiles (1) that tilt backward and are supported on the ground, and two rear support aluminum profiles (2) that are vertically supported on the lower back of the two front support aluminum profiles (1), and an upper connecting aluminum profile (3) that is detachably connected between the middle of the two front support aluminum profiles (1); the front support aluminum profiles (1) and the rear support aluminum profiles (2) are detachably connected. A first connecting profile groove (4) is formed on the side of the front support aluminum profile (1) facing the seat cushion assembly and backrest assembly. A second connecting profile groove (5) is provided on both sides of the upper end of the upper connecting aluminum profile (3). A third connecting profile groove (6) is formed on the lower end of the upper connecting aluminum profile (3) opposite to the first connecting profile groove (4). A first locking block (7) is provided between this surface and the front support aluminum profile (1). A first bolt connection hole (8) and a second bolt connection hole (9) corresponding to the first connecting profile groove (4) and the third connecting profile groove (6) are respectively provided on the first locking block (7). A first slider (10) connected to the first locking block (7) is provided in the first connecting profile groove (4). A first assembly hole corresponding to the first bolt connection hole (8) is provided on the first slider (10). The seat cushion assembly is mounted on the upper connecting aluminum profile (3) and includes a seat cushion (11) and multiple connecting pieces (12) fixed to the bottom of the seat cushion (11). The connecting pieces (12) are detachably connected to the second connecting profile groove (5). The backrest assembly includes a U-shaped connecting frame (13) and a backrest (14) mounted on the U-shaped connecting frame (13). The U-shaped connecting frame (13) has multiple third bolt connection holes on both sides. The first connecting profile groove (4) has a second slider (15) corresponding to the third bolt connection hole. The second slider (15) has a second assembly hole corresponding to the third bolt connection hole.

2. The adjustable aluminum chair of claim 1, wherein: The first slider (10) and the second slider (15) both include a trapezoidal main body (16) disposed in the first connecting profile groove (4) and a mating part (17) extending into the groove opening. The two sides of the groove opening are provided with retaining edges (18) that mate with the main body (16).

3. The adjustable aluminum chair of claim 2, wherein: The first locking block (7) is in the shape of a right angle, and the two right angle surfaces are attached to the front support aluminum profile (1) and the upper connecting aluminum profile (3). The inclined surface of the first locking block (7) is bent inward and has an installation port (19). An installation cavity communicating with the installation port (19) is formed in the first locking block (7). Two installation grooves (20) are provided in the installation cavity corresponding to the two right angle surfaces. The first bolt connection hole (8) and the second bolt connection hole (9) are respectively provided in the two installation grooves (20).

4. The adjustable aluminum chair of claim 3, wherein: The connecting piece (12) includes a connecting plate (21) and a downwardly bent folding plate (22). The connecting plate (21) is attached to the bottom of the cushion (11). The connecting plate (21) is provided with a strip-shaped fixing hole (23) for connecting with the main body of the cushion (11). The folding plate (22) is attached to the surface where the second connecting profile groove (5) is located. The folding plate (22) is provided with a plurality of fourth bolt connection holes corresponding to the second connecting profile groove (5). At least two connecting pieces (12) are respectively connected to the second connecting profile groove (5) on both sides of the upper connecting aluminum profile (3) in opposite directions.

5. The adjustable aluminum chair of claim 1, wherein: The inner wall of the U-shaped connecting frame (13) is provided with a mounting seat (24), and a gripping hole (25) is provided above the mounting seat (24). Mounting blocks (26) are protruding on both sides of the mounting seat (24). The mounting blocks (26) are provided with a slot (27) with an opening at the top. The slot (27) has a T-shaped cross section. The backrest (14) includes two secondary backrests spaced apart. The secondary backrests include a backrest frame (28) and a backrest pad (29) installed on the backrest frame (28). A connecting seat (30) is provided on the back side of the backrest frame (28). A locking block (31) is constructed at the outer end of the connecting seat (30) to fit into the slot (27) along the upper end of the slot (27).

6. The adjustable aluminum chair of claim 4, wherein: A lower connecting aluminum profile (32) is detachably connected between the two front support aluminum profiles (1) below the upper connecting aluminum profile (3). The two sides of the lower connecting aluminum profile (32) are connected to the front support aluminum profile (1) through the second locking block (71). A third slider (33) connected to the second locking block (71) is provided in the first connecting profile groove (4).

7. The adjustable aluminum chair of claim 6, wherein: The lower connecting aluminum profile (32) is detachably provided with a pedal (34). The pedal (34) is connected to the lower connecting aluminum profile (32) through multiple connecting pieces (12). The bottom of the pedal (34) forms multiple pads (35) that are fixedly connected to the connecting plates (21) of the connecting pieces (12).

8. The adjustable aluminum chair of claim 3, wherein: The back side of the front support aluminum profile (1) is provided with a fourth connecting profile groove (36), and the lower end face of the rear support aluminum profile (2) is provided with a fifth connecting profile groove (37) corresponding to the fourth connecting profile groove (36). The third locking block (72) is adapted to fit between the back side of the front support aluminum profile (1) and the lower end face of the rear support aluminum profile (2), and is connected to the fourth connecting profile groove (36) and the fifth connecting profile groove (37).

9. The adjustable aluminum chair of claim 8, wherein: The two rear support aluminum profiles (2) are detachably connected to a rear connecting aluminum profile (39) via an L-shaped assembly block (38). The L-shaped assembly block (38) includes an integrally formed first slide bar (40) and a second slide bar (41). A sixth connecting profile groove (42) is provided on the lower end surface of the rear connecting aluminum profile (39). A seventh connecting profile groove (43) is provided on the side of the rear support aluminum profile (2) facing the rear support aluminum profile (2). The first slide bar (40) and the second slide bar (41) are respectively slidably mounted on the sixth connecting profile groove (42) and the seventh connecting profile groove (43). Both the first slide bar (40) and the second slide bar (41) are provided with multiple bolt connection holes.

10. The adjustable aluminum chair of claim 1, wherein: The upper and lower ends of the front supporting aluminum profile (1) are respectively sleeved with a first sheath (44) and a second sheath (45), and the lower end of the rear supporting aluminum profile (2) is provided with a third sheath (46), and the lower end of the third sheath (46) is provided with a roller (47).

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