A detachable seat back and a seat

Abstract

The utility model relates to the technical field of furniture seat, specifically relates to the structure design of seat backrest part, the utility model is through the following technical scheme to be able to realize: a detachable seat backrest contains backrest support body and backrest body, and the side close to backrest support body of backrest body is provided with the hanging groove, and backrest support body is equipped with the hanging piece of cooperation hanging groove, still contain fastening bolt, and fastening bolt passes through the mounting hole of backrest support body, and with backrest body screw joint, the utility model discloses the purpose is to improve the maintainability and adaptation flexibility of seat, realizes the convenient installation and dismounting between backrest body and support body, reduces the operation difficulty of assembly and dismounting, improves the convenience and efficiency of use.

Description

Technical Field

[0001] This utility model relates to the field of furniture and seating technology, specifically to the structural design of the seat back. Background Technology

[0002] Seats are common support structures and are widely used in people's daily lives. They are usually composed of components such as seat, backrest, and support legs.

[0003] Existing chair backrest structures are mainly divided into two categories: one is an integrated backrest structure, in which the backrest is directly fixed to the backrest support body, usually using materials such as elastic support mesh to provide back support; the other is a detachable backrest structure, in which the backrest support body and the backrest body are detachably connected through connectors. For example, Chinese patent document CN215737935U discloses an ergonomic office chair with an adaptive backrest, which includes a backrest support body, a backrest body, and multiple connecting components for connecting the two (such as the first connecting component including a support sleeve, a support shaft, and a support frame, and the second connecting component including connecting rods, baffles, limiting plates, etc.), realizing flexible assembly of the backrest structure.

[0004] The two existing types of backrest structures each have the following drawbacks: For the first type, the one-piece backrest structure, since the elastic support mesh is directly fixed to the backrest support body, once this part is damaged or aged, it is often impossible to replace the damaged part individually; the entire backrest or even the whole chair must be replaced, resulting in high maintenance costs. Furthermore, different backrest support body designs require dedicated elastic support meshes, leading to poor versatility. Additionally, because this type of structure is non-removable, it occupies a significant amount of space during transportation and storage, increasing logistics costs. As for the second type, the detachable backrest structure, although it offers greater flexibility and maintainability, it relies on more connecting parts, making the installation and disassembly process more complex and inconvenient, and potentially increasing manufacturing and assembly costs. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the present invention proposes a detachable seat back and a seat. Compared with the existing devices, it significantly improves the maintainability and flexibility of the seat. It not only enables convenient installation and disassembly between the backrest body and the support body, but also effectively reduces the difficulty of assembly and disassembly operations, and improves the convenience and efficiency of use.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a detachable seat back, comprising a backrest support and a backrest body, wherein a hook groove is provided on the side of the backrest body near the backrest support, and a hook piece that matches the hook groove is installed on the backrest support; it also includes a fastening bolt, which passes through the mounting hole of the backrest support and is screwed to the backrest body.

[0007] To achieve quick disassembly and installation of the seat back, this utility model provides a detachable seat back, comprising two main parts: a backrest support and a backrest body. The form of the backrest support can be set according to actual needs (e.g., gaming chair or ergonomic chair). A mounting groove is provided on the back of the backrest body (i.e., the side closest to the backrest support). This mounting groove can be a groove or hole structure opened on the back of the backrest body. Correspondingly, a hook-like component is provided on the backrest support for cooperating with the mounting groove. This hook-like component can be a hook-like structure or a snap-fit ​​assembly, which can be inserted into or embedded in the mounting groove, thereby achieving initial positioning and connection between the backrest body and the backrest support. To further enhance the stability of the connection and prevent loosening or falling off due to vibration or external force during use, a fastening bolt is also provided. This fastening bolt passes through the mounting hole on the back of the backrest support (i.e., the side away from the backrest body) and is then screwed to the backrest body for final locking.

[0008] This invention simplifies the assembly process of the backrest body and the backrest support by using a combination of a mounting slot and a mounting piece. Operators only need to perform simple alignment and mounting actions to complete the initial connection, and then only need to tighten the fastening bolts to complete the installation. Similarly, disassembly becomes easy and quick. Furthermore, if the backrest is damaged during use, the corresponding part can be replaced separately without replacing the entire seat, thereby improving the maintainability and cost-effectiveness of the product.

[0009] Preferably, the hook-on component includes a horizontal connecting part connected to the backrest support at one end and a vertical limiting part extending upward from the other end of the horizontal connecting part, the vertical limiting part being embedded in the hook-on groove.

[0010] The L-shaped hook-and-mount component securely attaches to the backrest support via a horizontal connecting part. The backrest body is hooked onto the horizontal connecting part, and the vertical limiting part is inserted into the hook-and-mount slot, providing a reliable anti-detachment function.

[0011] Preferably, the backrest body includes a protruding connecting platform disposed on one side near the backrest support, and the backrest support is provided with an embedding groove.

[0012] After the raised connecting platform is inserted into the embedded groove, it can achieve lateral restraint on the backrest body, effectively preventing the backrest body from shifting or misaligning during the installation and tightening of bolts. This ensures accurate alignment of the bolts and threaded holes without additional manual assistance, significantly improving assembly efficiency and ease of operation. Simultaneously, this restraining structure also provides additional mechanical support for the backrest body, further enhancing the connection stability between it and the backrest support, and improving the overall structural load-bearing capacity and reliability.

[0013] Preferably, the protruding connecting platform and the embedded groove have the same shape, both being polygonal.

[0014] The raised connecting platform and the embedded groove use a rectangular, hexagonal, or other polygonal structure to effectively limit the sliding of the backrest body relative to the backrest support in the circumferential direction. Compared to a circular structure, this polygonal fit provides more precise positioning and stronger anti-rotation capability, helping to improve the stability of the connection and assembly accuracy.

[0015] Preferably, the backrest body includes a back support, a lumbar support, and an elastic connector. The back support extends downward to have a mounting portion. One side of the mounting portion is connected to the backrest support body, and the other side is connected to the lumbar support through the elastic connector.

[0016] The lumbar support is connected to the mounting part through an elastic connector. When the user sits on the seat, the lumbar support causes the elastic connector to compress and deform under the pressure of the human body, thereby forming a reverse support force, providing soft and stable support for the waist. This effectively avoids the pressure or insufficient support problems caused by traditional fixed supports, and significantly improves the comfort of the seat.

[0017] Preferably, the waist support member has a three-piece structure, including a central main body and side wings connected to the left and right sides of the main body.

[0018] The three-piece lumbar support structure can better conform to the curve of the human waist. The main body in the middle provides core support, while the side wings on both sides provide auxiliary support to the sides of the waist, effectively dispersing pressure and improving sitting comfort.

[0019] Preferably, a connecting component is provided between the main body and the two side wings, and the connecting component is used to allow the side wings to rotate back and forth relative to the main body.

[0020] By using connecting components (such as pivot hinges, flexible connectors, or flexible hinge structures), the side wings on both sides can rotate in the front and back directions relative to the main body according to changes in human sitting posture or individual body shape differences, thereby better conforming to the user's waist curve and achieving a dynamic adaptive support effect, effectively improving the seating comfort and ergonomics of the chair.

[0021] Preferably, the lateral width of the backrest body is greater than the lateral width of the backrest support.

[0022] The backrest body is wider than the backrest support, allowing it to extend forward appropriately after installation, enhancing the overall fullness and harmony of the chair's appearance. This wider design helps to better cover the user's shoulders and back, providing stronger support and a more enveloping feel, significantly improving seating comfort. Simultaneously, the increased lateral dimension enhances the backrest's adaptability to users of different body types, effectively avoiding issues such as unsupported shoulders or discomfort caused by an overly narrow backrest, further improving the product's practicality and human-computer interaction experience.

[0023] A seat comprising the aforementioned removable seat back.

[0024] In summary, this utility model has the following beneficial effects:

[0025] 1. The backrest body and the backrest support are detachably connected, which improves the maintainability and versatility of the seat.

[0026] 2. The use of hanging slots and hanging parts simplifies the assembly process of the backrest body and the backrest support. Operators only need to complete the initial connection through simple alignment and hanging actions, and then only need to tighten the fastening bolts to complete the installation.

[0027] 3. The backrest body is equipped with a protruding connecting platform that can be inserted into the groove of the backrest support. This platform can limit the backrest body laterally, effectively preventing the backrest body from shifting or misaligning to the left or right during the installation and tightening of bolts. At the same time, this structure can also provide additional mechanical support for the connection between the two, further enhancing the stability of the connection.

[0028] 4. The lumbar support component is connected to the mounting part by an elastic connector, which can effectively ensure its support for the human lumbar region.

[0029] 5. The lumbar support adopts a three-piece structure, with the side wings rotating relative to the main body. The angle can be adjusted according to the user's actual situation, so as to better fit the user's waist curve and achieve a dynamic adaptive support effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the ergonomic chair with a detachable backrest, as described in Example 1.

[0031] Figure 2 yes Figure 1 A schematic diagram of the overall structure of the backrest support;

[0032] Figure 3 yes Figure 2 Side view of the backrest support;

[0033] Figure 4 yes Figure 3 Detailed diagram of the mounting bracket;

[0034] Figure 5 yes Figure 1 Schematic diagram of the backrest structure;

[0035] Figure 6 yes Figure 1 Side view of the middle backrest body;

[0036] Figure 7 yes Figure 1 Schematic diagram of the front structure of the middle backrest body;

[0037] Figure 8 This is a schematic diagram of the overall structure of a gaming chair with a detachable backrest;

[0038] Figure 9 yes Figure 8 A schematic diagram of the overall structure of the backrest support.

[0039] in:

[0040] 1-Backrest support; 11-Mounting hole; 12-Embedding groove; 2-Backrest body; 21-Hanging groove; 22-Protruding connecting platform; 23-Back support; 231-Mounting part; 24-Lumbar support; 241-Main body; 242-Side wing; 25-Elastic connector; 3-Hanging part; 31-Horizontal connecting part; 32-Vertical limiting part. Detailed Implementation

[0041] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the present utility model is further described below in conjunction with specific illustrations. However, this utility model is not limited to the following embodiments.

[0042] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Example

[0043] This application provides a detachable seat back, such as... Figure 1As shown, the chair mainly consists of two parts: the backrest support 1 and the backrest body 2. The backrest body 2 is designed to be wider laterally than the backrest support 1. This not only enhances the overall fullness and harmony of the seat's appearance but also better covers the user's shoulder and back area, providing more comprehensive support and comfort, thus improving the user's sitting comfort. Furthermore, this wider design improves adaptability to users of different body types, effectively avoiding the discomfort of unsupported shoulders or a feeling of pressure caused by an overly narrow backrest, further enhancing the product's practicality and user experience.

[0044] In this embodiment, the structure of the backrest support 1 is as follows: Figure 2 As shown, it adopts an ergonomic chair-style backrest support design. Specifically, as follows... Figure 2 and Figure 3 As shown, a hook-and-mount component 3 is provided above the backrest support 1. This hook-and-mount component can be in the form of a hook-like structure or a snap-on assembly. Below it, an embedding groove 12 is provided, with mounting holes 11 on both sides of the embedding groove 12 for secure installation. Further details regarding the specific structure of the hook-and-mount component 3 can be found in [reference needed]. Figure 4 It includes a horizontal connecting part 31 connected to the backrest support 1 at one end and a vertical limiting part 32 extending upward from the other end of the horizontal connecting part 31.

[0045] The structure of the backrest body 2 is as follows Figure 5 As shown, a mounting groove 21 is provided on its back side (i.e., the side near the backrest support 1), which is used to mate with the mounting piece 3. The mounting groove 21 can be a groove or a hole structure. When the backrest body 2 is attached to the horizontal connecting part 31, the vertical limiting part 32 will be inserted into the mounting groove 21, providing a reliable anti-detachment function. At the same time, a raised connecting platform 22 is also provided on the lower back of the backrest body 2. This design matches the embedded groove 12 below the backrest support 1. When the raised connecting platform 22 is inserted into the embedded groove 12, it not only achieves lateral limiting of the backrest body 2, but also provides additional mechanical support, enhancing the overall connection stability and load-bearing capacity, and improving the reliability of use. The shapes of the raised connecting platform 22 and the embedded groove 12 are mutually compatible and can adopt different forms such as circles and polygons. In this embodiment, a polygonal design is preferred. Compared with a circular design, a polygon can more effectively limit the sliding of the backrest body 2 relative to the backrest support 1, providing a more accurate positioning effect and anti-rotation capability, which is conducive to improving the stability of the connection.

[0046] To further enhance the connection stability between the backrest support 1 and the backrest body 2, fastening bolts are used to thread them through the mounting holes 11 at the bottom of the backrest support 1 and then to fix it to the backrest body 2. The snap-fit ​​between the raised connecting platform 22 and the embedded groove 12 can prevent left or right offset or misalignment during installation, ensuring precise alignment without additional manual assistance, which greatly improves assembly efficiency and ease of operation.

[0047] Furthermore, the backrest body 2 includes a back support 23 and a lumbar support 24. The lower part of the back support 23 extends downward to form a mounting portion 231, and the lumbar support 24 is disposed on the front side of the mounting portion 231 (i.e., the side facing the front of the backrest body 2). Further, as... Figure 6 As shown, an elastic connector 25 is arranged laterally between the lumbar support 24 and the mounting part 231. When a user sits on the seat, the pressure applied by the body acts on the lumbar support 24, causing it to compress and deform the elastic connector 25, thereby generating a reverse support force. This support force provides soft and stable support for the user's lower back, effectively overcoming the problem of pressure or insufficient support caused by traditional fixed lumbar support structures, and significantly improving the overall comfort of the seat. The lumbar support 24 adopts... Figure 7 The three-piece structure design shown includes a central main body 241 and side wings 242 connected to both sides of the main body. This three-piece structure better conforms to the curve of the human waist: the main body 241 provides core support, while the side wings 242 provide auxiliary support to the sides of the waist, thereby achieving reasonable pressure distribution and further improving comfort in a sitting position. The side wings 242 can be fixedly connected to the main body 241 and maintain a certain angle; alternatively, they can be movably connected via connecting components. Preferably, in this embodiment, connecting components are used to connect the main body 241 to the two side wings 242. These connecting components can be structural forms such as pivot hinges, elastic connectors, or elastic hinges. Thus, the side wings 242 can rotate back and forth relative to the main body 241 according to changes in the user's sitting posture or individual body shape differences, thereby achieving a dynamically adaptive lumbar support effect and enhancing adaptability to different users.

[0048] In one or more embodiments, the backrest support 1 may also adopt the following... Figure 8 and Figure 9 The design shown is a gaming chair-style structure, or other different types of structural forms. The backrest support 1 of different structural forms is compatible with the same backrest body 2, improving the product's versatility and variety.

[0049] The detachable seat back installation method of this embodiment is as follows: Align the mounting slot 21 of the backrest body 2 with the mounting piece 3 on the backrest support 1 and attach it; then adjust the position so that the protruding connecting platform 22 on the back of the backrest body 2 is accurately embedded in the mounting slot 12 on the backrest support 1. At this time, the backrest body 2 has been positioned in the up-down and left-right directions. Finally, pass the fastening bolt from back to front through the mounting hole 11 of the backrest support 1 and thread it to the backrest body 2, thereby fixing the relative position in the front-back direction and achieving a stable installation of the backrest body 2 on the backrest support 1.

[0050] This application also provides a seat, including a seat, a support leg disposed under the seat, and the aforementioned detachable seat back.

[0051] The above description is merely a preferred embodiment disclosed in this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of protection involved in this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0052] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

Claims

1. A detachable seat back, comprising a backrest support (1) and a backrest body (2), characterized in that: The backrest body (2) has a hanging groove (21) on the side near the backrest support (1), and the backrest support (1) is equipped with a hanging piece (3) that matches the hanging groove (21); it also includes a fastening bolt, which passes through the mounting hole (11) of the backrest support (1) and is screwed to the backrest body (2).

2. The detachable seat back as described in claim 1, characterized in that: The hook-on component (3) includes a horizontal connecting part (31) connected to the backrest support (1) at one end and a vertical limiting part (32) extending upward from the other end of the horizontal connecting part (31), the vertical limiting part (32) being embedded in the hook-on groove (21).

3. The detachable seat back as described in claim 1, characterized in that: The backrest body (2) includes a protruding connecting platform (22) disposed on one side near the backrest support (1), and the backrest support (1) is provided with an embedded groove (12).

4. The detachable seat back as described in claim 3, characterized in that: The protruding connecting platform (22) and the embedded groove (12) have the same shape and are both set as polygons.

5. The detachable seat back according to claim 1, characterized in that: The backrest body (2) includes a back support (23), a waist support (24) and an elastic connector (25). The back support (23) extends downward to have a mounting part (231). One side of the mounting part (231) is connected to the backrest support (1), and the other side is connected to the waist support (24) through the elastic connector (25).

6. The detachable seat back according to claim 5, characterized in that: The waist support member (24) has a three-piece structure, including a central main body (241) and side wings (242) connected to the left and right sides of the main body (241).

7. The detachable seat back according to claim 6, characterized in that: A connecting component is provided between the main body (241) and the two side wings (242), and the connecting component is used to allow the side wings (242) to rotate back and forth relative to the main body (241).

8. The detachable seat back according to claim 1, characterized in that: The lateral width of the backrest body (2) is greater than the lateral width of the backrest support (1).

9. A type of seat, characterized in that: Includes a removable seat back as described in any one of claims 1-8.

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