Backrest built-in supporting assembly, backrest and seat

Abstract

The utility model discloses a backrest built-in supporting assembly, a backrest and a seat, the backrest built-in supporting assembly comprises a blow molding part, the blow molding part is provided with a mounting surface and a modeling surface connected with the mounting surface, a backrest spring is fixed on the mounting surface, and the backrest spring is provided with a curved surface matched with the adjacent modeling surface. According to the backrest built-in supporting assembly, the backrest and the seat, the structural arrangement is reasonable, and the comfort level of a passenger can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to a backrest built-in support component, a backrest 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] In order to provide stable and reliable support, the backrest of the seat is equipped with a support frame, which is generally made of wood, and the riding experience is not good. In order to improve comfort, cut sponges are generally pasted on the outside of the support frame to achieve the comfort of the sofa. This solution is not easy to produce complex and beautiful shapes, and the shape restoration is poor and the consistency is not good. Utility Model Content

[0004] The purpose of the present application is to provide a backrest built-in support component, a backrest and a seat, which can be designed and manufactured with complex curved surfaces, simple processing and good shape consistency.

[0005] In a first aspect, the present application provides a backrest built-in support assembly, including a blow-molded part, wherein the blow-molded part has a mounting surface and a shaping surface connected to the mounting surface, a backrest spring is fixed to the mounting surface, and the backrest spring has a curved surface adapted to the adjacent shaping surface.

[0006] By adopting the above technical solutions, it is helpful to improve the comfort of users and production efficiency. It is also possible to design complex curved surfaces and improve the aesthetics and comfort of the backrest. Blow-molded parts are formed by blow molding, which can not only achieve reliable support, but also reduce the cost of materials and achieve complex curved surface molding. The backrest spring has a curved surface that adapts to the adjacent modeling surface, which can make the transition between the curved surface and the modeling surface of the backrest spring smoother and provide better support performance, thereby providing more stable support and helping to disperse the body weight. Through the curved surface design of the blow-molded parts and the backrest spring, the built-in support component of the backrest can adapt to the curve of the human back, provide more uniform support, and thus reduce the discomfort caused by long-term use.

[0007] In a further embodiment, a covering member is further included, wherein the covering member abuts against at least a portion of the backrest spring and at least a portion of the styling surface.

[0008] By adopting the above technical solution, the cover can connect the curved surface of the backrest spring and the curved surface of the modeling surface into one, enhance the supporting force, and provide a more stable supporting effect. The cover can well combine the backrest spring and the blow-molded part, effectively reducing the sponge raw material from entering between the backrest spring and the blow-molded part in the subsequent sponge coating process.

[0009] In a further embodiment, the backrest spring is connected to a bracket, and the cover is provided with a first opening corresponding to the bracket.

[0010] By adopting the above technical solution, the bracket is used to connect with the seat cushion of the seat, and the first opening provided in the cover is convenient for the seat cushion-related connector to pass through and connect with the bracket. The blow molded part is fixedly connected to the backrest spring, the backrest spring is connected to the bracket, and the bracket is connected to the seat cushion of the seat, so that the connection of the built-in backrest support component is more reliable. The design of the first opening allows the bracket to be built into the blow molded part, making the appearance of the built-in backrest support component more concise and beautiful.

[0011] In a further embodiment, the blow-molded part is provided with a groove, and the covering part is provided with a second opening corresponding to the groove.

[0012] By adopting the above technical solution, the groove is used to place and install electrical components such as batteries and transformers, and the second opening is convenient for disassembling and assembling related electrical components. The design of the groove makes it easy to make full use of the hollow structure inside the blow-molded part, so that the installation of related electrical components is reliable and convenient without affecting the appearance of the product.

[0013] In a further embodiment, the blow-molded part further includes a charging port, and the charging port is connected to the groove.

[0014] By adopting the above technical solution, the charging port is used to connect the charging head of the power source to charge the battery in the groove, and the charging port is connected to the groove to facilitate the power connection and wiring. The charging port and the groove can be set on different surfaces of the blow molded part, thereby achieving a good combination of hiding the core electrical components and exposing the charging port. Reliable placement and disassembly of electrical components such as batteries and transformers are achieved, and reasonable design of the charging port position can achieve convenient charging.

[0015] In a further solution, a convex rib is provided on the outside of the charging port, and the convex rib is higher than the surface of the blow-molded part connected thereto.

[0016] By adopting the above technical solution, the ribs can limit and fix the charging head, improving the stability and reliability of the connection between the charging head and the charging port. The ribs are higher than the surface of the blow-molded part connected to it, so that when the outer surface of the blow-molded part is covered with a comfort material such as a sponge, the appearance can be smooth and aesthetically pleasing.

[0017] In a further solution, the blow-molded part is provided with a recess, and the recess is connected to the mounting surface.

[0018] By adopting the above technical solution, the concave part is connected to the mounting surface and is located inside the area enclosed by the mounting surface. This structure can improve the overall structural strength of the blow-molded part and reduce the deformation of the blow-molded part when it is under stress or in a natural state. The concave part can also provide deformation space for the backrest spring when it is deformed under stress, reducing deformation interference during the use of the backrest spring and affecting the riding experience.

[0019] In a second aspect, the present application provides a backrest, comprising the inner support assembly of the backrest as described in the first aspect.

[0020] In a further embodiment, a plastic part is further included, wherein the plastic part abuts against the cover part and at least a portion of the outer surface of the blow-molded part.

[0021] By adopting the above technical solution, the plastic part is coated on the outer surface of the cover part and the blow-molded part, and the blow-molded part, the backrest spring and the cover part are combined into one. The overall structure is more reliable and the product appearance is comfortable and beautiful.

[0022] In a third aspect, the present application provides a seat comprising a backrest as described in the second aspect.

[0023] The seats with backrests of the second aspect can achieve complex curved surface modeling, beautiful appearance, high production efficiency, and can also be designed into complex shapes through ergonomic principles, effectively increasing the human comfort experience.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. The backrest of the present application has a built-in support component, which has a simple structure, low cost and is easy to produce and process.

[0026] 2. The backrest of this application has a built-in support component, and the force structure is more reasonable, which effectively improves the stability and comfort of the product.

[0027] 3. Compared with the traditional wood support structure, this application uses blow-molded parts as the support structure, which has lower production costs, is easier to achieve complex shapes, has high production efficiency, and better product consistency.

[0028] 4. The backrest of this application can be designed and processed with complex curved surfaces, with flexible and diverse shapes. It can also be more in line with ergonomic principles, reduce the user's pressure and fatigue, and improve comfort.

[0029] 5. The seat of the present application can not only improve the supporting strength, but also effectively increase the stress deformation of the built-in supporting components of the backrest to improve the softness, thereby increasing the comfort experience of the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the built-in support assembly of the backrest of the present application;

[0031] Figure 2 It is a three-dimensional cutaway view of the built-in support assembly of the backrest of the present application;

[0032] Figure 3 It is a schematic diagram of the structure of the built-in support assembly of the backrest of the present application after the cover is removed;

[0033] Figure 4 It is a three-dimensional cross-sectional view of the blow-molded part and the backrest spring in the assembled state;

[0034] Figure 5 It is a schematic diagram of the structure of the blow molded part of the present application;

[0035] Figure 6 is a three-dimensional cross-sectional view of the blow-molded part of the present application;

[0036] Figure 7 It is a schematic diagram of the back structure of the blow molded part;

[0037] Figure 8 This is a three-dimensional cross-sectional view of the charging port position of the blow-molded part;

[0038] Fig. 9 It is a structural schematic diagram of the backrest of the present application;

[0039] Fig.10 It is a three-dimensional sectional view of the backrest of the present application.

[0040] Reference numerals:

[0041] 1. Blow-molded part; 11. Mounting surface; 12. Modeling surface; 13. Groove; 131. Through hole; 14. Recess; 15. Embedded nut; 16. Cavity; 17. Boss; 18. Charging port; 181. Rib; 182. Recess; 19. Back; 2. Back spring assembly; 21. Back spring frame; 211. Mounting hole; 22. Back spring; 23. Bracket; 3. Cover; 31. First opening; 32. Second opening; 4. Plastic part. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Embodiment 1

[0048] See also Figure 1 and Figure 2 The present embodiment discloses a built-in support assembly for a backrest, which includes a blow-molded part 1 and a back spring assembly 2. The back spring assembly 2 includes a back spring frame 21. The back spring frame 21 in the present embodiment is rectangular, and a back spring 22 is connected to the back spring frame 21. The back spring 22 is arranged along the length direction of the back spring frame 21 and has a plurality of strips evenly distributed in the width direction. The back spring 22 is a leaf spring.

[0049] See also Figure 1 The blow molded part 1 has a mounting surface 11 and a molding surface 12 connected to the mounting surface 11. The back spring frame 21 is provided with a mounting hole 211. The back spring frame 21 is fixed to the mounting surface 11 by screws passing through the mounting holes 211 and connected to the blow molded part 1. Brackets 23 are also fixedly connected to the lower sides of the back spring frame 21. The brackets 23 are used to connect with the seat frame when forming a sofa. In the use state, the molding surface 12 is used to form the appearance of the sofa and can also support the shoulders and arms of the occupant. The back spring 22 is used to support the waist and back of the human body. When the back spring 22 is under stress, it will deform to enhance the comfort experience of the human body.

[0050] See also Figure 2The back spring 22 is convex in the direction away from the mounting surface 11 and has a curved surface adapted to the adjacent modeling surface 12. The curved surface adapted to the adjacent modeling surface 12 of the back spring 22 is specifically substantially the same as the change trend of the adjacent modeling surface 12, but not completely the same, in order to prevent too much discontinuity between the modeling surface 12 and the leaf spring, so as to improve the quality of the product during subsequent processing, while also achieving a beautiful appearance and comfort of the backrest. The mounting surface 11 is a sunken table surface that is concave relative to the modeling surface 12, and the shape of the side wall connecting the mounting surface 11 and the modeling surface 12 is adapted to the back spring frame 21 to limit the installation position of the back spring frame 21.

[0051] The blow molded part 1 further includes a concave portion 14 connected to the mounting surface 11 and integrally formed, and the concave portion 14 is concave in a direction away from the mounting surface 11 and the backrest spring 22. The concave portion 14 increases the deformation space of the backrest spring 22 after being stressed, and can also improve the strength of the overall blow molded part 1.

[0052] See also Figure 3 and Figure 4 The backrest built-in support assembly of this embodiment further includes a cover 3, which covers the surface of the backrest spring 22 and the shaping surface 12 and abuts against at least part of the backrest spring 22 and at least part of the shaping surface 12. The cover 3 in this embodiment is a non-woven fabric and is fixed to the surface of the shaping surface 12 by bonding.

[0053] See also Figure 3 The cover 3 is provided with a first opening 31 corresponding to the bracket 23. When the sofa is manufactured and assembled, the sofa seat frame can be connected to the bracket 23 through the first opening 31. The bracket 23 of this embodiment is connected to the sofa seat frame by plugging. The blow molded part 1 is provided with a groove 13, and the cover 3 is provided with a second opening 32 corresponding to the groove 13. When the sofa has functions such as electric, the groove 13 is used to place electrical components such as batteries or circuit boards, and the second opening 32 is convenient for taking and placing electrical components. In order to make full use of space and facilitate circuit connection, the groove 13 is located between the two brackets 23.

[0054] See also Figure 4 , the periphery of the cover 3 is bonded to the molding surface 12, and the middle area of ​​the cover 3 is bonded to the curved surface of the middle part of the back spring 22. The two ends of the back spring 22 in this embodiment are lower than the molding surface 12 to form a step, so the cover 3 is not bonded to the two ends of the back spring 22. In specific implementation, this step can be reduced or eliminated, and the support deformation of the back spring 22 is not greatly affected.

[0055] See also Figure 4 and Figure 5The blow molded part 1 is provided with a fixing part, and the fixing part is used to fix the back spring 22 to the blow molded part 1. The fixing part can be a nut fixed to the blow molded part 1 as a whole, and the back spring 22 is fixed to the blow molded part 1 as a whole by the screw and the nut. The fixing part can also be a countersunk hole or a threaded hole, and the back spring 22 is connected to the countersunk hole or the threaded hole by a screw so that the back spring 22 is fixed to the blow molded part 1 as a whole. This connection structure is simple, easy to load and unload, and low in cost.

[0056] See also Figure 5 and Figure 6 The blow molded part 1 is made of plastic or sponge, so the blow molded part 1 has a cavity 16 inside and the wall thickness is relatively uniform, which can achieve good structural strength and reduce material cost and product weight. By making full use of the internal cavity 16 of the blow molded part 1, the concave portion 14 and the groove 13 can improve the strength of the blow molded part 1, and do not occupy external space and affect the overall external shape.

[0057] See also Figure 7 The blow molded part 1 also includes a charging port 18, and a rib 181 is provided on the outside of the charging port 18. The rib 181 is higher than the back 19 of the blow molded part 1 connected thereto. The rib 181 is surrounded by a concave platform 182 around the charging port 18. When charging, the charging head is located in the concave platform 182 to reduce the looseness of the charging head and improve the charging reliability. The back 19 of the blow molded part 1 is also provided with a boss 17, and the boss 17 is located in the middle of the back 19. The boss 17 and the rib 181 are both higher than the back 19 of the blow molded part 1, so that after the backrest is formed, they are adapted to the thickness of the sponge and the face cover wrapped outside, so that the appearance is smooth and the appearance is maintained beautiful.

[0058] See also Figure 8 The charging port 18 is connected to the groove 13 through the through hole 131, which is convenient for power connection. The charging head charges the battery in the groove 13 through the charging port 18.

[0059] Embodiment 2

[0060] See also Fig. 9 and Fig.10 This embodiment discloses a backrest, including the backrest built-in support assembly in Embodiment 1. The backrest includes a plastic member 4, which abuts against and is connected to the entire surface of the cover member 3 and at least a portion of the outer surface of the blow-molded member 1 as a whole.

[0061] See also Fig.10The plastic part 4 is a sponge. In this embodiment, the plastic part 4 covers the entire outer surface of the blow molded part 1, and different hand feelings are achieved by different thicknesses at different positions. The plastic part 4 can be a molded sponge sleeved outside the plastic part 4, or the blow molded part 1 can be placed in a mold by a mold forming method, and the sponge is covered on the outer surface of the blow molded part 1 by injection molding or molding.

[0062] Embodiment 3

[0063] The present embodiment discloses a seat, specifically a sofa, comprising a seat cushion and the backrest in the second embodiment, wherein the backrest is connected and fixed to the seat cushion via a built-in support assembly of the backrest.

[0064] 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 support assembly for a backrest, characterized in that: The blow molded part (1) comprises a mounting surface (11) and a molding surface (12) connected to the mounting surface (11); a backrest spring (22) is fixed to the mounting surface (11); and the backrest spring (22) has a curved surface adapted to the adjacent molding surface (12).

2. The built-in support assembly of the backrest according to claim 1, characterized in that: The utility model also comprises a covering member (3), wherein the covering member (3) abuts against at least a part of the backrest spring (22) and at least a part of the styling surface (12).

3. The built-in support assembly for the backrest according to claim 2, characterized in that: The backrest spring (22) is connected to a bracket (23), and the cover (3) is provided with a first opening (31) corresponding to the bracket (23).

4. The built-in support assembly for the backrest according to claim 2, characterized in that: The blow-molded part (1) is provided with a groove (13), and the covering part (3) is provided with a second opening (32) corresponding to the groove (13).

5. The built-in support assembly for the backrest according to claim 4, characterized in that: The blow-molded part (1) further comprises a charging port (18), wherein the charging port (18) is in communication with the groove (13).

6. The built-in support assembly for the backrest according to claim 5, characterized in that: The charging port (18) is provided with a convex rib (181) on the outside, and the convex rib (181) is higher than the surface of the blow-molded part (1) connected thereto.

7. The built-in support assembly for the backrest according to any one of claims 1 to 6, characterized in that: The blow-molded part (1) is provided with a recess (14), and the recess (14) is connected to the mounting surface (11).

8. A backrest, characterized in that: It comprises a built-in support assembly for the backrest as described in any one of claims 1-7.

9. The backrest according to claim 8 referring to the backrest built-in support assembly according to any one of claims 2 to 6, characterized in that: It also comprises a plastic part (4), wherein the plastic part (4) abuts against the cover part (3) and at least a part of the outer surface of the blow-molded part (1).

10. A seat, characterized in that: Comprising a backrest as claimed in claim 8 or 9.

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