Leisure chair with back changing structure

Abstract

The utility model belongs to the technical field of chairs, and particularly relates to a leisure chair with a back changing structure. The leisure chair comprises a seat plate and a back plate structure, wherein the back plate structure comprises a supporting column group and a connecting rod group; the back plate structure is composed of two supporting columns symmetrically arranged on the two sides of the seat plate. Each supporting column is provided with a supporting face and a top face which are oppositely arranged and further provided with a leaning face and a back face which are oppositely arranged. The connecting rod set is composed of a plurality of parallel connecting rods. The two ends of the connecting rod are connected with the connecting holes in the two supporting columns in an inserted mode respectively. Through the arrangement of the back plate structure, it is guaranteed that the back plate structure has comfortable inclination, the back plate structure has the advantage of breaking up the whole into parts, disassembly and assembly are convenient, parts are convenient to maintain and replace, and the back plate structure has the advantages of being high in practicability and good in comfort degree.

Description

A lounge chair with a reversible backrest Technical Field

[0001] This utility model belongs to the field of seating technology, specifically relating to a leisure chair with a reversible backrest structure. Background Technology

[0002] Indoor lounge chairs are designed for placement in homes and public spaces, providing comfortable seating or reclining support for individuals or groups. They come in a variety of materials, primarily leather, stainless steel, and plastic, and are characterized by their diverse and creative designs and vibrant colors. The versatility of function and design is a key focus for manufacturers.

[0003] The patent document CN218683115U discloses a modular lounge chair, comprising at least one chair body. The chair body includes a seat, chair legs at the corners of the seat, and side back panels on the left, right, and rear sides of the seat. The side back panels are interlocked with the seat. This device allows the side back panels to be detached by interlocking with the seat on three sides, enabling the chair to be modularly assembled.

[0004] However, the device still has the following problems: since the back panel needs a suitable angle of support and the armrests need sufficient support area, it is difficult to meet both functions at the same time when the back panel on the same side bears the above two functions, which will result in poor back comfort when using the lounge chair. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a lounge chair with a replaceable backrest structure. Through the design of the backrest structure, a comfortable angle is ensured. Moreover, the backrest structure has the advantage of being modular, making it easy to disassemble and assemble, as well as to maintain and replace parts. It has the advantages of being highly practical and comfortable.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A lounge chair with a reversible backrest structure includes a seat and a backrest structure, wherein the backrest structure includes:

[0008] The support column assembly consists of two support columns symmetrically arranged on both sides of the seat plate; each support column has a support surface and a top surface arranged opposite each other, and also has a backing surface and a back surface arranged opposite each other; the backing surface is an inclined surface connecting the support surface and the top surface, and the vertical projected area of ​​the support surface is larger than the vertical projected area of ​​the top surface; multiple connecting holes are respectively provided on the two opposite sides of the two support columns; the connecting line of the centers of all the connecting holes on a single support column is parallel to the backing surface;

[0009] The connecting rod assembly consists of multiple parallel connecting rods; the two ends of each connecting rod are respectively inserted into the connecting holes on the two support columns.

[0010] As a further preferred embodiment of this utility model, each of the support columns is provided with an internally threaded hole near the top surface, penetrating the support surface and the back surface; a threaded rod is screwed onto the internally threaded hole.

[0011] As a further preferred embodiment of the present invention, the back panel structure further includes a soft pouch; the soft pouch is provided with a fixing strap; the fixing strap has at least a hanging part that is connected to the connecting rod or support column.

[0012] As a further preferred embodiment of the present invention, the fixing strap also has a limiting portion disposed at the end of the hanging part, and the limiting portion is provided with a plurality of limiting holes that match the threaded rod.

[0013] As a further preferred embodiment of this utility model, the support surface is provided with a mounting hole extending into the support column; the base plate is provided with a mounting rod that is inserted into the mounting hole.

[0014] As a further preferred embodiment of this utility model, a positioning hole is provided on the side of the supporting surface away from the internal threaded hole; a positioning rod is provided on the base plate that is inserted into the positioning hole.

[0015] As a further preferred embodiment of this invention, the length of the positioning rod is less than the length of the threaded rod.

[0016] As a further preferred embodiment of this utility model, the number of support column groups is two; the support surface of the support column of one support column group is connected to the upper surface of the seat plate; the back side of the support column of the other support column group is parallel to the upper surface of the seat plate, and the lower end of the threaded rod is connected to the upper surface of the seat plate.

[0017] As a further preferred embodiment of this utility model, the end of the seat plate away from the positioning rod is provided with a positioning hole two that matches the threaded rod.

[0018] As a further preferred embodiment of the present invention, the length of the support column in one group of support columns is less than the length of the support column in the other group of support columns. Attached Figure Description

[0019] Figure 1 is a three-dimensional structural diagram of this utility model.

[0020] Figure 2 is a three-dimensional structural diagram of the back plate structure of this utility model.

[0021] Figure 3 is a three-dimensional structural diagram of the soft package of this utility model.

[0022] Figure 4 is a cross-sectional view of the present invention from a side angle.

[0023] Figure 5 is a cross-sectional structural diagram of the present invention from a top view.

[0024] Attached diagram description: 1. Support column; 2. Connecting rod; 3. Soft padding; 4. Mounting rod; 5. Positioning rod.

[0025] Support surface 101, top surface 102, backing surface 103, back surface 104, connecting hole 105, internal threaded hole 106, threaded rod 107, mounting hole 108, positioning hole 109;

[0026] Mounting part 311, limiting part 312, limiting hole 313. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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.

[0028] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within 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.

[0030] This utility model provides a leisure chair with a reversible backrest structure, as shown in Figures 1-5, including a seat plate and a backrest structure. The backrest structure includes a support column assembly and a connecting rod assembly.

[0031] The support column group consists of two support columns 1 symmetrically arranged on both sides of the seat plate; each support column 1 has a support surface 101 and a top surface 102 arranged opposite to each other, and also has a backing surface 103 and a back surface 104 arranged opposite to each other; the backing surface 103 is an inclined surface connecting the support surface 101 and the top surface 102, and the vertical projection area of ​​the support surface 101 is larger than the vertical projection area of ​​the top surface 102.

[0032] Multiple connecting holes 105 are provided on the two opposite sides of the two support columns 1; the connecting line of the center of all the connecting holes 105 on a single support column 1 is parallel to the support surface 103.

[0033] The connecting rod assembly consists of multiple parallel connecting rods 2; the two ends of the connecting rods 2 are respectively inserted into the connecting holes 105 on the two support columns 1.

[0034] Furthermore, the support column 1 and the base plate are detachably connected. Specifically, the support surface 101 is provided with a mounting hole 108 extending into the support column 1; the base plate is provided with a mounting rod 4 that is inserted into the mounting hole 108. Of course, to further improve stability, methods such as interference fit or adding connection points can be used. These are well-known techniques that can be used by those skilled in the art, so they will not be described in detail in this embodiment.

[0035] It is worth noting that the two support columns 1 form the "vertical sides" of the back panel structure, while the connecting rod 2, after installation, forms the "horizontal surface" of the back panel structure. The slope of the "horizontal surface" is consistent with that of the support surface 103, meeting the requirements for back comfort. In addition, the modular design of the back panel structure facilitates disassembly and assembly, making it convenient for transportation and replacement of parts.

[0036] Furthermore, each of the support columns 1 is provided with an internally threaded hole 106 near the top surface 102, penetrating the backing surface 103 and the back surface 104; a threaded rod 107 is screwed onto the internally threaded hole 106. The portion of the threaded rod 107 protruding from the back surface 104 can be directly used as a hanging rod to suspend daily necessities, thus expanding the auxiliary function of the seat.

[0037] In this embodiment, to improve seat comfort, a soft padding 3 is also provided. The soft padding 3 is equipped with fixing straps; each fixing strap has at least one hanging part 311 connected to the connecting rod 2 or the support column 1. The soft padding 3 generally consists of a filling layer and a packaging layer, and the number of fixing straps is generally two. The hanging part 311 is generally an inverted U-shaped plate, which allows for easy and simple fixing of the soft padding 3, providing the advantage of convenient replacement.

[0038] In this embodiment, another function of the threaded rod 107 is to strengthen the fixing point of the soft bag 3. That is, the fixing strap also has a limiting part 312 provided at the end of the hanging part 311. The limiting part 312 is provided with a plurality of limiting holes 313 that match the threaded rod 107. By inserting the threaded rod 107 into the limiting holes 313, the position of the limiting part 312 can be limited, thereby limiting the position of the soft bag 3, which can prevent the soft bag 3 from slipping excessively during use.

[0039] Another innovative feature of this seat is that the two support columns 1 of the support column assembly can directly serve as two armrests. Specifically, the backrest surface 103 has a positioning hole 109 on the side away from the internal threaded hole 106; the seat plate has a positioning rod 5 that inserts into the positioning hole 109. The length of the positioning rod 5 is less than the length of the threaded rod 107.

[0040] It is worth noting that, when used as an armrest, the back surface 104 of the support column 1 is parallel to the upper surface of the seat plate, serving as the armrest surface in direct contact. In this case, the threaded rod 107 protrudes from the support surface 103 by rotation, acting as another positioning rod that cooperates with the positioning rod 5, ensuring the support stability of the support column 1 as an armrest. It is understood that the connection between the positioning rod 5 and the seat plate can be either a fixed connection or a detachable connection; this embodiment will not elaborate on this.

[0041] It is worth noting that the seat provided in this embodiment adopts two sets of support column groups. The support surface 101 of the support column 1 of one set of support column groups is connected to the upper surface of the seat plate; the back side 104 of the support column 1 of the other set of support column groups is parallel to the upper surface of the seat plate, and the lower end of the threaded rod 107 is connected to the upper surface of the seat plate.

[0042] Furthermore, the length of the support column 1 in one set of support columns is shorter than the length of the support column 1 in the other set of support columns. This arrangement allows the two sets of support columns 1 to be used as options for the backrest structure, one for a high backrest and the other for a low backrest. Users can choose based on comfort and aesthetics; the high backrest enhances comfort, while the low backrest enhances aesthetics. Additionally, as a product, this chair's modular design allows for various combinations, satisfying the need for customization.

[0043] As a further preferred embodiment, the end of the seat plate away from the positioning rod 5 is provided with a second positioning hole (not shown in the figure) that matches the threaded rod 107. This arrangement helps to enhance the support stability when used as a handrail. However, it should be noted that there should be two second positioning holes to meet the positioning connection requirements between the support column 1 of different heights and the threaded rod 107 when used as a handrail.

[0044] It is understood that, in order to meet the requirement of interchangeable support column assembly and armrests, the seat width and / or depth of the seat provided in this embodiment should be increased. The width should be increased to meet the required width of the support surface, plus the width required for the installation of two support columns 1. The depth should allow for the installation requirements when the longer support column 1 is used as an armrest. The adjustment of dimensions can be obtained through multiple experiments by those skilled in the art, so it will not be described in detail in this embodiment.

[0045] It is understood that the material used for the seat provided in this embodiment can be any material conventionally selected in the art, such as wood, metal alloy, plastic, etc. This embodiment does not limit or elaborate on this material.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A lounge chair with a reversible backrest structure, comprising a seat and a backrest structure, characterized in that: The back plate structure includes: a support column group, consisting of two support columns (1) symmetrically arranged on both sides of the seat plate; each support column (1) has a support surface (101) and a top surface (102) arranged opposite to each other, and also has a back surface (103) and a back surface (104) arranged opposite to each other; the back surface (103) is an inclined surface connecting the support surface (101) and the top surface (102), and the vertical projection area of ​​the support surface (101) is larger than the vertical projection area of ​​the top surface (102); multiple connecting holes (105) are respectively provided on the two opposite sides of the two support columns (1); the connecting line of the center of all the connecting holes (105) on the single support column (1) is parallel to the back surface (103); a connecting rod group, consisting of multiple parallel connecting rods (2); the two ends of the connecting rods (2) are respectively inserted into the connecting holes (105) on the two support columns (1).

2. A lounge chair with a reversible backrest structure according to claim 1, characterized in that: Each of the support columns (1) has an internal threaded hole (106) that penetrates the support surface (103) and the back surface (104) near the top surface (102); a threaded rod (107) is screwed onto the internal threaded hole (106).

3. A lounge chair with a reversible backrest structure according to claim 2, characterized in that: The back panel structure also includes a soft bag (3); the soft bag (3) is provided with a fixing strap; the fixing strap has at least a hanging part (311) that is connected to the connecting rod (2) or the support column (1).

4. A lounge chair with a reversible backrest structure according to claim 3, characterized in that: The fixing strap also has a limiting part (312) provided at the end of the hanging part (311), and the limiting part (312) is provided with a plurality of limiting holes (313) that match the threaded rod (107).

5. A lounge chair with a reversible backrest structure according to claim 1, characterized in that: The support surface (101) is provided with a mounting hole (108) extending into the support column (1); the base plate is provided with a mounting rod (4) that is inserted into the mounting hole (108).

6. A lounge chair with a reversible backrest structure according to claim 2, characterized in that: A positioning hole (109) is provided on the side of the support surface (103) away from the internal thread hole (106); a positioning rod (5) is provided on the base plate to be inserted into the positioning hole (109).

7. A lounge chair with a reversible backrest structure according to claim 6, characterized in that: The length of the positioning rod (5) is less than the length of the threaded rod (107).

8. A lounge chair with a reversible backrest structure according to claim 7, characterized in that: The number of support column groups is two; the support surface (101) of the support column (1) of one support column group is connected to the upper surface of the seat plate; the back side (104) of the support column (1) of the other support column group is parallel to the upper surface of the seat plate, and the lower end of the threaded rod (107) is connected to the upper surface of the seat plate.

9. A lounge chair with a reversible backrest structure according to claim 8, characterized in that: The end of the seat plate away from the positioning rod (5) is provided with a positioning hole two that matches the threaded rod (107).

10. A lounge chair with a reversible backrest structure according to claim 8, characterized in that: The length of the support column (1) of one group of support columns is less than the length of the support column (1) of the other group of support columns.

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