Backrest built-in framework and seat

Abstract

The utility model discloses a backrest built-in framework and a seat, the backrest built-in framework comprises a frame, the frame is provided with a front face facing a user and a back face opposite to the front face, the frame is provided with an arc-shaped plate spring, and the plate spring is arranged in a protruding mode from the front face to the direction away from the back face. The backrest built-in framework and the seat are reasonable in structure and convenient to mount and dismount.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to a backrest built-in frame and a seat. Background Art

[0002] Existing seating furniture, such as chairs, sofas, etc., can provide people with a comfortable resting position, are loved by people, and are widely used in people's home life.

[0003] The backrest of the existing seat is provided with a frame in order to provide stable and reliable support. The frame is generally processed from wood, which is troublesome to assemble, and the material cost and processing cost are high, which has great limitations. In addition, the current backrest adopts the support form of springs, which is not comfortable. Utility Model Content

[0004] The purpose of the present application is to provide a backrest built-in frame and seat, which has a simple and reasonable structure and can provide users with a more comfortable experience.

[0005] The present application provides a built-in frame of a backrest, comprising a frame having a front side facing a user and a back side opposite to the front side, wherein the frame is provided with an arc-shaped leaf spring, and the leaf spring is protruded from the front side toward a direction away from the back side.

[0006] By adopting the above technical solution, the frame structure is simpler, an iron frame can be used, and the material and processing costs are lower. The leaf spring is convex from the front to the direction away from the back, forming an arc shape, which adapts to the user's body curve, provides more uniform and comfortable support, and improves the uniformity and integrity of the user's back support. This design also helps to disperse the user's weight and reduce the pressure on the back and spine. The built-in frame of the backrest provides the user with a comfortable, supportive and ergonomic seat design. At the same time, by using a combined structure of a frame and an arc leaf spring, it can provide user comfort and health during long-term use.

[0007] In a further solution, the leaf springs are arranged along the length direction of the frame and at least two leaf springs are arranged in the width direction.

[0008] By adopting the above technical solution, better and more uniform support can be provided to the user's back. The leaf spring is arranged along the length direction of the frame, and the convex arc shape can better adapt to the user's back curve, provide better comfort, and reduce back and waist fatigue after long-term sitting.

[0009] In a further solution, a mounting hole is provided on the frame, and the mounting hole is arranged on the back side.

[0010] By adopting the above technical solution, the mounting holes on the frame are used to connect with other supporting parts of the backrest, and the back side of the frame is fixed to other supporting parts through the mounting holes, thereby improving the stability and reliability of the connection between the frame and other supporting parts.

[0011] In a further embodiment, a connecting piece is further included, and the leaf spring is detachably fixedly connected to the frame via the connecting piece.

[0012] By adopting the above technical solution, the connector facilitates the connection and disassembly of the leaf spring and the frame. The connection through the connector can reduce the structural complexity of the leaf spring and the frame, and the assembly and disassembly are more convenient. The connector is a force-bearing component, which is prone to damage due to stress concentration. Designing the connector as a separate part can reduce the after-sales maintenance cost, improve the after-sales maintenance efficiency, and facilitate standardized production and maintenance.

[0013] In a further embodiment, the connecting member includes a first connecting end connected to the leaf spring and a second connecting end connected to the frame. Under the limitation of the second connecting end, the leaf spring applies a pulling force to the first connecting end away from the second connecting end and a pressure toward the frame.

[0014] By adopting the above technical solution, the connection convenience of the connecting parts can be achieved, and the separation of the leaf spring and the frame can be prevented to a certain extent, thereby improving production efficiency and enhancing product stability and quality.

[0015] In a further embodiment, the tension direction is perpendicular to the pressure direction.

[0016] By adopting the above technical solution, the connecting piece is subjected to reasonable force, which can reduce the probability of the leaf spring being detached.

[0017] In a further solution, brackets are connected to both sides of the frame, and the brackets have mounting grooves.

[0018] By adopting the above technical solution, the bracket facilitates the connection between the frame and the cushion iron frame of the seat, and the frame and the cushion iron frame can be made into separate structures, so that the storage and transportation space of the semi-finished product is smaller, and the storage and transportation cost is reduced. The installation groove is used for plug-in connection with the cushion iron frame, which is convenient for installation and has higher assembly efficiency.

[0019] In a further solution, an elastic clamping portion is provided in the installation groove, and the clamping portion is connected to a paddle extending toward an entrance direction of the installation groove.

[0020] By adopting the above technical solution, the elastic clamping part can prevent the frame from being separated from the seat cushion iron frame when the frame is connected to the seat cushion iron frame, and the paddle is used to drive the clamping part so that the frame can be separated from the seat cushion iron frame for disassembly. The paddle is oriented toward the entrance of the installation slot, which is convenient for personnel to operate and reduces the difficulty of disassembly.

[0021] In a further embodiment, the mounting groove includes a first slide track and a second slide track, the first slide track is longer than the second slide track, and the first slide track is closer to the back side than the second slide track.

[0022] By adopting the above technical solution, two slides are used for sliding insertion connection of the seat cushion iron frame connection part, and the first slide is longer than the second slide to facilitate the insertion of the seat cushion iron frame. The first slide is closer to the back, which is conducive to more uniform and reasonable force on the first slide and the second slide of the installation groove when the user leans on the backrest, thereby improving the quality of the installation groove.

[0023] In a second aspect, the present application provides a seat comprising the built-in backrest frame as described in the first aspect.

[0024] The seat with a built-in frame in the backrest has a simple and reasonable structure, which is more convenient for workers to install, disassemble or repair.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. The backrest of the present application has a built-in frame, which has a more reasonable structure and improves the comfort of the user.

[0027] 2. The backrest of this application has a built-in frame, and the force structure is more reasonable, which effectively improves the stability and quality of the product.

[0028] 3. The backrest of the present application has a built-in frame, which can adopt an iron frame structure, with lower processing and material costs. The detachable structure can reduce storage space and reduce storage and transportation costs during production and transportation.

[0029] 4. The seat of the present application has a simple structure and is more convenient to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of the first embodiment of the built-in frame of the backrest of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of the first embodiment of the built-in frame of the backrest of the present application at a lateral angle;

[0032] Figure 3 This is a schematic diagram of the structure of the bracket in the first embodiment of the built-in frame of the backrest of the present application;

[0033] Figure 4 This is a structural schematic diagram of the first embodiment of the built-in frame of the backrest of the present application from another angle;

[0034] Figure 5 yes Figure 3 A magnified schematic diagram of area A in FIG.

[0035] Figure 6 This is a schematic structural diagram of the connecting member in the first embodiment of the built-in frame of the backrest of the present application;

[0036] Figure 7 This is a schematic structural diagram of the second embodiment of the built-in frame of the backrest of the present application;

[0037] Figure 8 This is a schematic diagram of the structure of the second embodiment of the built-in frame of the backrest of the present application from the side;

[0038] Fig. 9 It is a structural schematic diagram of the front side of the right bracket of the second embodiment of the built-in frame of the backrest of the present application;

[0039] Fig.10 It is a structural schematic diagram of the back side of the right bracket of the second embodiment of the built-in frame of the backrest of the present application;

[0040] Fig.11 This is a structural schematic diagram of the front side of the left bracket in the second embodiment of the built-in backrest frame of the present application;

[0041] Fig.12 It is a structural schematic diagram of the back side of the left side bracket in the second embodiment of the built-in backrest frame of the present application.

[0042] Reference numerals:

[0043] 1. Frame; 11. Mounting hole; 12. Front; 13. Back; 2. Leaf spring; 3. Connector; 31. First connecting end; 32. Second connecting end; 4. Bracket; 41. Snap-fit ​​portion; 42. Paddle; 43. Mounting groove; 431. First slideway; 432. Second slideway; 433. Entrance; 44. Fixing hole. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0048] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0049] Embodiment 1

[0050] See also Figure 1 and Figure 2 , a schematic diagram of the structure of an embodiment of the built-in frame of the backrest of the present application. The built-in frame of the backrest includes a frame 1, an arc-shaped leaf spring 2 and brackets 4 fixedly connected to both sides of the frame 1. The frame 1 has a front side 12 facing the user and a back side 13 opposite to the front side 12. The arc-shaped leaf spring 2 is detachably fixedly connected to the frame 1 through a connecting member 3. The leaf spring 2 is protruded from the front side 12 of the frame 1 away from the back side 13. The leaf spring 2 is arranged along the length direction of the frame 1 and at least two are arranged in the width direction. The frame 1 is provided with a mounting hole 11, which is arranged on the back side 13 of the frame 1 and passes through the front side 12 of the frame 1.

[0051] See also Figure 2 and Figure 3, the bracket 4 is fixedly connected to the frame 1 by welding or bolts. The bracket 4 has a mounting groove 43, in which an elastic clamping portion 41 is provided, and the clamping portion 41 is integrally connected with a paddle 42 extending toward the entrance 433 of the mounting groove 43. The mounting groove 43 includes a first slide 431 and a second slide 432, and the first slide 431 and the second slide 432 have the same length. When the backrest with a built-in backrest frame and the seat cushion of the sofa are installed, the frame 1 is connected to the seat cushion iron frame of the sofa through the bracket 4, and the seat cushion iron frame is inserted into the mounting groove 43 from the entrance 433 of the mounting groove 43, and is restricted from sliding in the mounting groove 43 by the clamping portion 41, thereby achieving fixation between the frame 1 and the sofa. When the frame 1 needs to be removed from the seat cushion iron frame, the paddle 42 is pushed away from the mounting groove 43, and the paddle 42 drives the clamping part 41 to move away from the mounting groove 43, and the seat cushion iron frame slides toward the entrance 433 of the mounting groove 43 and slides out of the mounting groove 43, so as to realize the removal of the backrest and the seat cushion. The bracket 4 is made of a metal sheet, and the clamping part 41 is elastic. The clamping part 41 is fixed to the bracket 4 as a whole, and the clamping part 41 is bent toward the mounting groove 43 and abuts against the bottom surface of the mounting groove 43 or has a small gap, which is smaller than the thickness of the seat cushion iron frame inserted into the mounting groove 43.

[0052] See also Figure 4 , Figure 5 and Figure 6 , the leaf spring 2 is detachably connected and fixed to the frame 1 through the connecting member 3. The connecting member 3 includes a first connecting end 31 and a second connecting end 32, the first connecting end 31 is detachably connected to the long hole on the leaf spring 2, and the second connecting end 32 is detachably connected to the hole on the side of the frame 1. The main body of the connecting member 3 has a right-angle bend, and the first connecting end 31 and the second connecting end 32 are respectively located at the two ends of the right-angle bend. The main body of the connecting member 3 abuts against two adjacent side surfaces of the frame 1, which can maintain the stability of the connection between the connecting member 3 and the frame 1. The curvature of the arc of the leaf spring 2 in the natural state is greater than the curvature after assembly, so the assembled leaf spring 2 has a pulling force on the first connecting end 31 of the connecting member 3 away from the second connecting end 32. Because the second connecting end 32 is inserted into the hole on the side of the frame 1, the leaf spring 2 simultaneously applies pressure on the connecting member 3 toward the frame 1, and the pulling direction and the pressure direction are basically perpendicular. This pre-tension of the leaf spring 2 can not only maintain the fixed connection between the leaf spring 2 and the frame 1, but also ensure the stability of the connection with the frame 1 under a certain pressure. At the same time, this connection structure is easy to install and disassemble, and the connecting part 3 can be made into a standard part, which is conducive to standardized production management.

[0053] Embodiment 2

[0054] See also Figure 7-Figure 12 The difference between the built-in frame of the backrest in this embodiment and that in the first embodiment is that the structure of the bracket 4 is different.

[0055] See also Figure 7 and Figure 8 The side of the bracket 4 close to the back side 13 of the frame 1 is longer than the side close to the front side 12 .

[0056] See also Figure 8 and Fig. 9 The structure of the bracket 4 installed on the right side of the frame 1 in this embodiment is different from the structure of the bracket 4 in the first embodiment in that the paddle 42 connected to the clamping portion 41 is longer and extends toward the entrance 433 of the mounting groove 43 and is close to the entrance 433. The lengthened paddle 42 is more convenient to touch the paddle 42 from the entrance 433 of the mounting groove 43 during disassembly, so that the distance between the clamping portion 41 and the bottom surface of the mounting groove 43 is increased, which is convenient for separating the bracket 4 from the seat cushion iron frame and improves the disassembly efficiency. Another difference is that the first slide 431 of the mounting groove 43 is longer than the second slide 432, and the first slide 431 is closer to the back 13 of the frame 1 than the second slide 432. This structure facilitates installation. The entrance 433 of the seat cushion iron frame entering the frame 1 first abuts against the first slideway 431, then slides along the first slideway 431 into the installation groove 43 and then enters the second slideway 432. Under the guidance of the first slideway 431 and the second slideway 432, the seat cushion iron frame completely enters the installation groove 43 and is fixedly engaged with the clamping portion 41. Compared with the structure of the bracket 4 in the first embodiment, the bracket 4 in this embodiment is more convenient to install, it is easier to find the position of the entrance 433, and the assembly efficiency is higher.

[0057] See also Fig.10 The back side 13 of the bracket 4 is provided with two fixing holes 44 , and the bracket 4 is fixedly connected to the frame 1 by bolts passing through the fixing holes 44 .

[0058] See also Fig.11 and Fig.12 , the structure of the bracket 4 installed on the left side of the frame 1 is schematically shown, which is symmetrical with the structure of the bracket 4 installed on the right side of the frame 1 and will not be described in detail here.

[0059] Embodiment 3

[0060] See also Figure 7 and Figure 8 The difference between the built-in frame of the backrest of this embodiment and the second embodiment is that the frame 1 is provided with an insertion interface for matching with the leaf spring 2, and the two ends of the leaf spring 2 extend into the insertion interfaces on both sides of the frame 1 to slide and match with the frame 1. When the leaf spring 2 is subjected to pressure, the leaf spring 2 can slide along the insertion interface to deform accordingly and will not be separated from the frame 1. If it is necessary to detach the leaf spring 2 from the frame 1, it is only necessary to pull the leaf spring 2 out with external force.

[0061] Embodiment 4

[0062] Referring to the above figure, this embodiment discloses a seat, specifically a sofa, including a backrest and a seat cushion. The backrest includes any one of the backrest built-in frames in embodiments 1 to 3, and the backrest is connected and fixed to the seat cushion via a bracket 4.

[0063] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes, modifications, substitutions and variants, and these changes, modifications, substitutions and variants all fall within the scope of the utility model claimed for protection.

Claims

1. A built-in frame for a backrest, characterized in that: The invention comprises a frame (1), wherein the frame (1) has a front side (12) facing a user and a back side (13) opposite to the front side (12), and the frame (1) is provided with an arc-shaped leaf spring (2), wherein the leaf spring (2) is provided protruding from the front side (12) in a direction away from the back side (13).

2. The built-in backrest frame according to claim 1, characterized in that: The leaf springs (2) are arranged along the length direction of the frame (1) and at least two leaf springs are arranged in the width direction.

3. The built-in backrest frame according to claim 1, characterized in that: The frame (1) is provided with a mounting hole (11), and the mounting hole (11) is arranged on the back side (13).

4. The built-in backrest frame according to claim 1, characterized in that: It also comprises a connecting member (3), through which the leaf spring (2) is detachably fixedly connected to the frame (1).

5. The inner frame of the backrest according to claim 4, characterized in that: The connecting member (3) comprises a first connecting end (31) connected to the leaf spring (2) and a second connecting end (32) connected to the frame (1); under the restriction of the second connecting end (32), the leaf spring (2) applies a pulling force in a direction away from the second connecting end (32) to the first connecting end (31) and a pressure toward the frame (1).

6. The built-in backrest frame according to claim 5, characterized in that: The pulling force direction is perpendicular to the compressive force direction.

7. The built-in backrest frame according to any one of claims 1 to 6, characterized in that: Brackets (4) are connected to both sides of the frame (1), and the brackets (4) have mounting grooves (43).

8. The inner frame of the backrest according to claim 7, characterized in that: An elastic clamping portion (41) is provided in the installation groove (43), and the clamping portion (41) is connected to a paddle (42) extending towards an entrance (433) of the installation groove (43).

9. The inner frame of the backrest according to claim 7, characterized in that: The mounting groove (43) comprises a first slideway (431) and a second slideway (432), the first slideway (431) being longer than the second slideway (432), and the first slideway (431) being closer to the back side (13) than the second slideway (432).

10. A seat, characterized in that: It comprises the built-in backrest frame as claimed in any one of claims 1 to 9.

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