Seat

Abstract

The utility model relates to the technical field of furniture, in particular to a seat which comprises a chair seat, a chair back arranged on the rear side of the chair seat and armrests arranged on the two sides of the chair seat. The chair back comprises a chair back frame body, and a waist rest flexible lining plate and a waist rest bracket which are arranged on the chair back frame body. The chair back frame body is annular, and the lower end of the chair back frame body is fixedly connected to a seat frame below the chair seat. The waist rest support is in a U shape, the two ends of the U shape are fixedly connected to the two sides of the chair back frame, and the bottom of the U shape elastically abuts against the rear side of the chair seat. And the edge of the flexible fabric is fixedly connected to the waist rest bracket and the chair back frame body above the waist rest bracket to form a chair back supporting part. The waist rest flexible lining plate is positioned on the rear side of the waist rest bracket, and two end parts of the waist rest flexible lining plate are fixedly connected to two side frames of the chair back frame body. The scheme has the advantages that the waist fitting degree is improved, and the supporting strength and comfort are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture technical field especially relates to a seat. BACKGROUND

[0002] With the improvement of people's requirement for the comfort of the seat, the waist support design of the chair gradually becomes the focus of the function optimization. The traditional chair usually adopts the fixed waist rest or the simple elastic structure, but has the following defects: the waist adhesion degree is insufficient, the rigid waist rest structure is difficult to adapt to the waist curve of different body type users, leading to uneven distribution of supporting force, and fatigue is easy to produce after long time use. While the waist rest depending on the elastic support alone has certain deformation ability, but is easy to collapse due to insufficient supporting degree when the user leans back, and cannot maintain effective support. The contradiction between supporting strength and comfort, part of the products through the hard lining plate added behind the chair back to enhance the supporting strength, but such design will reduce the flexibility of the waist contact area, affect the comfort. On the contrary, if only flexible material is used, it is difficult to meet the supporting demand under the high strength use scene (such as supine). In view of the above problems, the prior art needs to be improved. SUMMARY

[0003] In order to solve the above problems, the utility model discloses a seat, has the advantages of improving the waist adhesion degree, enhancing the supporting strength and the comfort.

[0004] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0005] The application provides a seat, and the technical scheme is as follows: a seat, including a seat, a backrest arranged on the rear side of the seat, and armrests arranged on both sides of the seat. The backrest includes a backrest frame, a waist rest flexible lining plate arranged on the backrest frame and a waist rest support. The backrest frame is annular, and the lower end is fixedly connected to the seat frame below the seat. The waist rest support is U-shaped, and the two ends of the U-shaped portion are fixedly connected to the two sides of the backrest frame, and the bottom of the U-shaped portion is elastically supported on the rear side of the seat. The edges of the flexible fabric are fixedly connected to the waist rest support and the backrest frame above the waist rest support, forming a backrest supporting portion. The waist rest flexible lining plate is arranged on the rear side of the waist rest support, and the two ends of the waist rest flexible lining plate are fixedly connected to the two side frames of the backrest frame.

[0006] Further, the application further provides that the two side frames of the backrest frame are concave to form connecting grooves, and the connecting grooves are provided with threaded seats. The two ends of the U-shaped portion of the waist rest support are provided with positioning arms and through holes. When the waist rest support is installed, the positioning arms extend into the connecting grooves, the through holes are opposite to the threaded seats and are connected through screwing components.

[0007] Further, the application further provides that the connecting grooves are U-shaped structures surrounding the threaded seats. The shape of the positioning arm is a U-shaped structure matched with the connecting grooves.

[0008] Furthermore, this application also proposes that connecting plates are provided at both ends of the flexible lumbar support panel. The connecting plates are fixed to the side frames of the chair back frame by pressure plates.

[0009] Furthermore, this application proposes that the pressure plate is elongated, forming a strip-shaped hole between it and the chair back frame. The connecting plate portion is inserted into the strip-shaped hole and can slide up and down along the hole for adjustment. Furthermore, this application also proposes that the connecting plate includes a sliding hook, which passes through the strip-shaped hole and its hook portion is engaged with the pressure plate or the chair back frame.

[0010] Furthermore, this application also proposes that the flexible lumbar support panel includes a panel body, a front panel snapped onto the front end face of the panel body, and a flexible lumbar support layer fixed to the front panel. One of the panel body and the front panel is provided with a hook, and the other with a latch; the hook engages with the latch to secure the front panel and the flexible lumbar support layer.

[0011] As can be seen from the above, the chair provided in this application improves the fit to the waist and enhances the support strength and comfort through the design of the backrest frame, the flexible lumbar support panel and the lumbar support bracket, which has significant advantages. Attached Figure Description

[0012] Figure 1 This is a three-dimensional diagram of a chair from the top view provided in this application.

[0013] Figure 2 A schematic diagram of a chair back provided for this application.

[0014] Figure 3 This is a partial connection diagram of the chair back.

[0015] Figure 4 This is a structural diagram of a flexible lumbar support panel. Detailed Implementation

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] 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.

[0021] like Figures 1-4As shown, this embodiment relates to a seating arrangement, including a seat 1, a backrest 2 disposed at the rear of the seat 1, and armrests 3 disposed on both sides of the seat 1. The backrest 2 includes a backrest frame 21, a flexible lumbar support liner 22 and a lumbar support bracket 23 disposed on the backrest frame 21. The backrest frame 21 is annular, with its lower end fixed to the seat frame 11 below the seat 1. The lumbar support bracket 23 is U-shaped, with its two ends 231 fixed to the sides of the backrest frame 21, and its bottom 232 elastically supporting the rear of the seat 1. The edges of the flexible fabric are fixed to the lumbar support bracket 23 and the backrest frame 21 above it, forming a backrest support portion. The flexible lumbar support liner 22 is located behind the lumbar support bracket 23, and its two ends are fixed to the side frames 211 of the backrest frame 21. The annular structure of the backrest frame 21 can be achieved by welding, bolting, or integral molding to ensure a stable connection between it and the seat frame 11. The U-shaped structure of the lumbar support bracket 23 can be made of metal or high-strength plastic. Its two ends 231 can be fixed to the backrest frame 21 by bolts, clips, or welding, while the bottom 232 is elastically connected to the rear of the seat 1 by springs or elastic rubber pads to provide sufficient support and elasticity. The flexible fabric can be made of breathable fabric, leather, or mesh, and its edges are fixed to the lumbar support bracket 23 and the backrest frame 21 by sewing, bonding, or clamping to form a comfortable backrest support. The flexible lumbar support panel 22 can be made of memory foam, elastic foam, or soft plastic, and its two ends are fixed to the side frames 211 of the backrest frame 21 by bolts, clips, or bonding to provide additional support and comfort. Through the above technical means, the technical solution of this application effectively solves the problems of insufficient lumbar support fit and the contradiction between support strength and comfort. The combination of the backrest frame 21 and the lumbar support bracket 23 provides a stable support base. The elastic design of the lumbar support bracket 23 provides effective support when the user leans back, preventing sagging. The design of the flexible fabric and the flexible lumbar support panel 22 increases the comfort of the lumbar area while maintaining support strength, adapting to the lumbar curves of users of different body types. Compared with the prior art, the technical solution of this application improves comfort and fit while ensuring lumbar support strength, simplifies adjustment operations, and enhances long-term reliability.

[0022] like Figure 3As shown, the two side frames 211 of the chair back frame 21 are recessed to form connecting grooves 212, and threaded seats 213 are provided in the connecting grooves 212. Positioning arms 233 and through holes 234 are provided on the U-shaped ends 231 of the lumbar support bracket 23. When installing the lumbar support bracket 23, the positioning arms 233 extend into the connecting grooves 212, and the through holes 234 are opposite to the threaded seats 213 and connected by screws 214. This technical solution, through the design of the connecting grooves 212 and threaded seats 213 of the chair back frame 21, provides precise positioning and a stable connection foundation for the installation of the lumbar support bracket 23. The design of the positioning arms 233 and through holes 234 of the lumbar support bracket 23 makes the installation process simpler and enhances the stability of the connection. Therefore, the lumbar support bracket 23 will not loosen or fall off during use, solving the technical problems of unstable connection and inconvenient installation between the chair back frame 21 and the lumbar support bracket 23. Compared with existing technologies, this technical solution not only simplifies the installation process but also improves the reliability of the connection, ensuring stability during long-term use.

[0023] Specifically, the connecting groove 212 is a U-shaped structure surrounding the threaded seat 213. The positioning arm 233 is U-shaped to fit the connecting groove 212. Specifically, the U-shaped design of the connecting groove 212 allows the positioning arm 233 of the lumbar support bracket 23 to accurately embed within the connecting groove 212, ensuring positioning accuracy during installation. The U-shaped shape of the positioning arm 233 further enhances the fit between the positioning arm 233 and the connecting groove 212, making the lumbar support bracket 23 more stable during installation and less prone to shifting or loosening. As a preferred embodiment, the U-shaped structure of the connecting groove 212 can be achieved through injection molding or machining, while the U-shaped shape of the positioning arm 233 can be manufactured through stamping or bending processes. Thus, the connection between the lumbar support bracket 23 and the chair back frame 21 is more reliable, solving the problems of inaccurate positioning and unstable installation in traditional designs. Through this structural design, the lumbar support bracket 23 can automatically align with the connecting groove 212 during installation, reducing manual adjustment steps and improving installation efficiency. Furthermore, the U-shaped connecting groove 212 and positioning arm 233 can evenly distribute stress when subjected to force, enhancing the stability and durability of the overall structure. Therefore, the technical solution of this application not only improves the installation accuracy and stability of the lumbar support bracket 23, but also simplifies the installation process and enhances the overall performance of the product.

[0024] like Figure 3 and 4As shown, the flexible lumbar support panel 22 has connecting plates 221 at both ends, which are fixed to the side frames 211 of the chair back frame 21 via pressure plates 222. The design of the connecting plates 221 ensures the flexible lumbar support panel 22 is securely fixed to the chair back frame 21, preventing displacement or detachment due to shaking or pressure during use. The pressure plates 222 further enhance the stability of the connection. Simultaneously, through the slotted hole 223 formed between the pressure plates 222 and the chair back frame 21, the connecting plates 221 can partially engage with the slotted hole 223 and slide up and down along the slotted hole 223 for adjustment. This design not only simplifies the installation process but also provides convenience for adjusting the height of the flexible lumbar support panel 22, allowing users to adjust the position of the lumbar support according to their needs and improve comfort. Specifically, the connecting plates 221 can be implemented in various ways. For example, the connecting plates 221 can be made of metal to enhance their strength and durability. Alternatively, the connecting plate 221 can be made of plastic to reduce overall weight and lower costs. Furthermore, the shape of the connecting plate 221 can be adjusted according to the structure of the chair back frame 21 to ensure a tight fit. The design of the pressure plate 222 can also have various variations; for example, the pressure plate 222 can have a structure with elastic pads to further increase connection stability. Alternatively, the pressure plate 222 can have a design with a locking mechanism to prevent the connecting plate 221 from accidentally sliding during adjustment. Therefore, the technical solution of this application, through the combined design of the connecting plate 221 and the pressure plate 222, effectively solves the technical problems of connection stability and adjustment convenience between the flexible lumbar support panel 22 and the chair back frame 21. Compared with the prior art, this technical solution not only improves the installation and adjustment efficiency of the flexible lumbar support panel 22 but also enhances its stability and reliability during use, thereby significantly improving the user experience.

[0025] Furthermore, the pressure plate 222 is elongated, forming a slot 223 between it and the chair back frame 21. The connecting plate 221 partially engages with the slot 223 and can slide up and down along it. The elongated design of the pressure plate 222 creates the slot 223 between it and the chair back frame 21, allowing the connecting plate 221 to connect to the pressure plate 222 by partially engaging with it. The length and width of the slot 223 can be adjusted according to actual needs to ensure smooth sliding of the connecting plate 221 and maintain sufficient stability. The sliding adjustment function of the connecting plate 221 is achieved through the slot 223, allowing users to adjust the position of the lumbar support flexible lining 22 according to their individual needs, thereby improving the chair's comfort and usability. In addition, the slot 223 structure between the pressure plate 222 and the chair back frame 21 ensures the stability of the connecting plate 221, preventing loosening or detachment during use. Therefore, this application effectively solves the technical problem of the weak and unadjustable connection between the flexible lumbar support panel 22 and the backrest frame 21 by using the strip hole 223 structure between the pressure plate 222 and the backrest frame 21, as well as the sliding adjustment function of the connecting plate 221. Compared with the prior art, this technical solution not only improves the connection strength, but also realizes the flexible adjustment of the position of the flexible lumbar support panel 22 through the sliding adjustment function, thereby improving the comfort and applicability of the chair. At the same time, the design of the strip hole 223 structure simplifies the adjustment operation and enhances the reliability of long-term use.

[0026] Furthermore, the connecting plate 221 includes a sliding hook 224, which passes through the slotted hole 223 and its hook portion engages with the pressure plate 222 or the chair back frame 21. The design of the sliding hook 224 allows the connecting plate 221 to slide along the slotted hole 223 and achieves stable fixation through the engagement of the hook portion with the pressure plate 222 or the chair back frame 21. Specifically, the hook portion of the sliding hook 224 can adopt various shapes, such as L-shape, U-shape, or other suitable engagement structures, to ensure that the connecting plate 221 does not loosen or fall off during adjustment. In addition, the material of the sliding hook 224 can be selected from metal or plastic with sufficient strength and toughness to adapt to the force requirements under different usage scenarios. Through the cooperation of the sliding hook 224 and the slotted hole 223, the connecting plate 221 can slide up and down within the slotted hole 223, thereby adapting to the lumbar support needs of different users. The hook of the sliding hook 224 engages with the pressure plate 222 or the chair back frame 21, ensuring the stability of the connecting plate 221 after adjustment and preventing displacement or detachment during user use. This design not only simplifies the adjustment operation but also improves the stability and reliability of the structure, ensuring that the connecting plate 221 functions effectively in different positions. Compared with existing technologies, this technical solution achieves sliding adjustment and stable fixation of the connecting plate 221 through a simple structural design, avoiding support failure problems caused by complex adjustment mechanisms or insecure fixation in traditional designs.

[0027] like Figure 4 As shown, the flexible lumbar support panel 22 includes a panel body 225, a front panel 226 snapped onto the front end face of the panel body 225, and a flexible lumbar support layer 227 fixed to the front panel 226. One of the panel body 225 and the front panel 226 is provided with a hook 228, and the other with a latch 229. The hook 228 engages with the latch 229 to fix the front panel 226 and the flexible lumbar support layer 227. The design of the hook 228 and the latch 229 can be achieved in various ways. For example, the hook 228 can be designed as an elastic material, allowing it to deform slightly when engaged with the latch 229, thereby enhancing the stability of the engagement. The latch 229 can be designed as a groove matching the shape of the hook 228, ensuring that the hook 228 can accurately engage and be fixed. Furthermore, the number and distribution of the hooks 228 and the latches 229 can be adjusted according to actual needs to further optimize the fixing effect. In a preferred embodiment, the hook 228 can be disposed on the liner body 225, while the latch 229 is disposed on the front panel 226, or vice versa, depending on the actual ease of installation and structural stability requirements. Specifically, the design of the flexible lumbar support liner 22 achieves rapid fixation of the front panel 226 and the flexible lumbar support layer 227 through the snap-fit ​​structure between the liner body 225 and the front panel 226. The cooperation of the hook 228 and the latch 229 ensures a stable connection between the front panel 226 and the liner body 225, while simplifying the installation process. This design not only improves the structural stability but also enhances the ease of installation, allowing the flexible lumbar support liner 22 to better adapt to different usage needs. Compared with the prior art, this technical solution effectively solves the fixation problem between the flexible lumbar support liner 22 and the front panel 226 and the flexible lumbar support layer 227 through an innovative snap-fit ​​structure, ensuring structural stability and ease of installation.

[0028] 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.

[0029] 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. A seating arrangement comprising a seat (1), a backrest (2) disposed at the rear of the seat (1), and armrests (3) disposed on both sides of the seat (1); characterized in that: -The chair back (2) includes a chair back frame (21), and a lumbar support flexible lining (22) and a lumbar support bracket (23) disposed on the chair back frame (21); - The backrest frame (21) is ring-shaped, and its lower end is fixed to the seat frame (11) below the seat (1); - The lumbar support bracket (23) is U-shaped, with its two ends (231) fixed to the two sides of the chair back frame (21), and the bottom (232) of the U-shape elastically supporting the back of the chair seat (1); - The edge of the flexible fabric is fixed to the lumbar support bracket (23) and the backrest frame (21) above it to form the backrest support part; - The flexible lumbar support plate (22) is located behind the lumbar support bracket (23), and its two ends are fixed to the two side frames (211) of the chair back frame (21).

2. The seating according to claim 1, characterized in that: - The two side frames (211) of the chair back frame (21) are recessed to form a connecting groove (212), and a threaded seat (213) is provided in the connecting groove (212); - The lumbar support bracket (23) is provided with positioning arms (233) and through holes (234) on the two U-shaped ends (231); - When the lumbar support bracket (23) is installed, the positioning arm (233) extends into the connecting groove (212), and the through hole (234) is opposite to the threaded seat (213) and connected by the screw fastener (214).

3. The seating according to claim 2, characterized in that: - The connecting groove (212) is a U-shaped structure surrounding the threaded seat (213); - The positioning arm (233) is U-shaped to fit the connecting groove (212).

4. The seating according to claim 1, characterized in that: - Connecting plates (221) are provided at both ends of the flexible lumbar support liner (22); - The connecting plate (221) is fixed to the two side frames (211) of the chair back frame (21) by the pressure plate (222).

5. The seating according to claim 4, characterized in that: - The pressure plate (222) is long and narrow, and a strip hole (223) is formed between it and the chair back frame (21); - The connecting plate (221) is partially inserted into the strip hole (223) and can slide up and down along the strip hole (223) for adjustment.

6. The seating according to claim 5, characterized in that: - The connecting plate (221) includes a sliding hook (224) that passes through a strip hole (223) and whose hook portion is engaged with a pressure plate (222) or a chair back frame (21).

7. The seating according to claim 6, characterized in that: - The flexible lumbar support panel (22) includes a panel body (225), a front panel (226) snapped onto the front end face of the panel body (225), and a flexible lumbar support layer (227) fixed to the front panel (226); - In the liner body (225) and the front panel (226), one is provided with a hook (228) and the other is provided with a slot (229). The hook (228) is inserted into the slot (229) to fix the front panel (226) and the flexible waist support layer (227).

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