Framework assembly, backrest and seat

Abstract

The framework assembly comprises a back frame and a head frame which are rotationally connected with each other, the back frame and the head frame are at least provided with two rotating connecting parts, one rotating connecting part is a ratchet mechanism, and the other rotating connecting part is provided with a reset piece. The framework assembly, the backrest and the seat are simple and stable in structure, 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 frame assembly, 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 frame assembly, a backrest and a seat with a simple structure and good consistency in shape.

[0005] In a first aspect, the present application provides a skeleton assembly, comprising a back frame and a head frame rotatably connected to each other, wherein the back frame and the head frame have at least two rotating connection parts, one of which is a ratchet mechanism, and the other of which is provided with a reset member.

[0006] By adopting the above technical solution, the rotation angle between the head frame and the back frame can be adjusted to suit different sitting and lying postures, which helps to improve the comfort of the user. The back frame and the head frame can be made of metal materials to improve production efficiency, and complex curved surface design can also be performed to improve the aesthetics and comfort of the backrest. The reset piece can ensure the stable connection and reset between the head frame and the back frame, improve the convenience and flexibility during use, and provide better support performance, thereby making it easier to operate. The ratchet mechanism can maintain a stable state after the head frame is adjusted, which is conducive to supporting and relaxing the head. The skeleton assembly made of metal materials has a good degree of modeling restoration and improves product consistency. It can also be designed to adapt to the curve of the human back and provide more uniform support, thereby reducing the discomfort caused by long-term use.

[0007] In a further solution, both sides of the back frame are fixedly connected with back side frames, and the two back side frames have different structures and are connected to the back frame in a C shape.

[0008] By adopting the above technical solution, two back side frames connected to the back frame in a C shape can support both sides of the back frame, increase the support surface of the human body, increase the sense of envelopment of the backrest, provide more leaning support for the human body, and improve the comfort of riding. The two backrest frames have different structures, which are used to adapt to the connection structure of the ratchet mechanism and the reset member, without affecting the ratchet mechanism and the reset member, while achieving structural stability and reliability, and the design is more flexible.

[0009] In a further solution, head side frames are provided on both sides of the head frame, and the head side frames are connected to the head frame in a C shape.

[0010] By adopting the above technical solution, the head side frames on both sides of the head frame are connected to the head frame in a C shape, which can support both sides of the passenger's head, and the passenger's head is more relaxed when lying on his back. Combined with the ratchet structure to adjust the angle of the head frame, it can adapt to various relaxation postures of the head, relax the muscles and nerves of the head and neck, and facilitate recovery from fatigue.

[0011] In a further embodiment, the opening directions of the C-shape formed by the dorsal frame and the back frame and the C-shape formed by the head frame and the head frame are the same.

[0012] By adopting the above technical solution, the back frame and the head frame provide good surrounding support for the back and both sides of the human body, thereby improving the comfort and sense of security of the passengers.

[0013] In a further embodiment, the reset member and the ratchet mechanism are located between the head frame and the dorsal frame.

[0014] By adopting the above technical solution, the head side frame can rotate with the head frame. The different rotation angles of the head frame and the head side frame can more flexibly adapt to the sitting and lying postures of the human head, achieve semi-enclosed support for the head, and help meet the different relaxation needs of users.

[0015] In a further solution, brackets are fixedly connected to both sides of the back frame, and the brackets are located on a side of the back frame away from the head frame.

[0016] By adopting the above technical solution, the bracket can be used to connect with the seat frame of the chair to form a stable connection structure. The bracket is located on the side of the back frame away from the head frame. During processing, the structural layout is more reasonable and it is also conducive to connecting and fixing with the seat frame.

[0017] In a further embodiment, the dorsal frame is located between the head frame and the support.

[0018] By adopting the above technical solution, the structural layout and force are more reasonable, which is conducive to product processing and subsequent assembly.

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

[0020] In a further embodiment, a foam piece is further included, wherein the foam piece and the frame assembly are foamed to form an integral structure, and the bracket is at least partially exposed from the foam piece.

[0021] By adopting the above technical solution, the one-piece molded backrest, the connection between the foam part and the frame assembly is more reliable and has better strength. It can also achieve a good appearance and surface softness, making the ride more comfortable.

[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 skeleton assembly of the present application has a simple structure, low cost and is easy to produce and process.

[0026] 2. The skeleton assembly of the present application has a more reasonable force structure, which effectively improves the stability and comfort of the product.

[0027] 3. Compared with the traditional wood support structure, the present application adopts the tube profile processing to form the skeleton assembly, which has lower production cost, is easier to realize 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 frame assembly 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 skeleton assembly of the present application from a top view;

[0031] Figure 2 It is a schematic structural diagram of the side view of the skeleton assembly of the present application;

[0032] Figure 3 It is a structural schematic diagram of the skeleton assembly of the present application from the front view;

[0033] Figure 4is a front perspective cutaway view of the backrest of the present application;

[0034] Figure 5 It is a schematic diagram of the back structure of the backrest of the present application.

[0035] Reference numerals:

[0036] 1. Back frame; 11. Reinforcement; 2. Head frame; 3. Ratchet mechanism; 4. Reset member; 41. Rotating shaft; 5. Head side frame; 6. Back side frame; 61. First side frame; 62. Second side frame; 7. Bracket; 71. Slide groove; 72. Shrapnel; 8. Back cushion; 9. Headrest. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Embodiment 1

[0043] See also Figure 1 and Figure 2 , this embodiment discloses a skeleton assembly, which includes a back frame 1 and a head frame 2 that are rotatably connected to each other. The back frame 1 and the head frame 2 have at least two rotating connection parts, one of which is a ratchet mechanism 3, one end of the head frame 2 is connected to one end of the back frame 1 through the ratchet mechanism 3, and the other rotating connection part is formed by rotating the back frame 1 and the head frame 2 through a rotating shaft 41. A reset member 4 is provided on the rotating shaft 41. The reset member 4 in this embodiment is a torsion spring, the spring coil of the torsion spring is sleeved on the rotating shaft 41, and the two torsion arms of the torsion spring are respectively in contact with the head frame 2 and the back frame 1. Through the joint action of the ratchet mechanism 3 and the torsion spring, the free rotation of the head frame 2 relative to the back frame 1 can be realized, and the rotation angle of the head frame 2 can be limited and maintained at the fixed angle to withstand a certain pressure, thereby realizing effective support for the head. The torsion spring can realize the reset force on the headrest 9, and the reset of the head frame 2 is realized after the ratchet mechanism 3 is unlocked, and the operation is more convenient.

[0044] See also Figure 1 , the head frame 2 and the back frame 1 are a U-shaped structure as a whole, one end of the head frame 2 is connected to one end of the back frame 1 through a ratchet mechanism 3, and the other end of the head frame 2 is pivotally connected to the other end of the back frame 1 through a rotating shaft 41. A head side frame 5 is fixedly connected to the head frame 2, and the head side frame 5 extends outward toward the lateral sides of the head frame 2 and is connected to the head frame 2 in a C shape. The head side frame 5 in this embodiment is formed by bending steel bars and then welded to the head frame 2 as a whole. In specific practice, the head side frame 5 can also be a plastic molded product or a wood molded product and fixedly connected to the head frame 2 by screws. The head side frame 5 is fixed to one end of the head frame 2 away from the ratchet mechanism 3. During the rotation of the head frame 2 relative to the back frame 1, the head side frame 5 can rotate with the head frame 2. The head side frame 5 in this embodiment is formed by bending a steel bar, which has the advantage that the connection between the head side frame 5 and the head frame 2 is more stable and reliable. In specific applications, the head side frame 5 can be divided into two parts and fixed on both sides of the head frame 2 respectively.

[0045] The ratchet mechanism 3 can rotate toward the C-shaped opening of the head side frame 5 and within a certain angle, the head side frame 5 can be limited to rotate in the opposite direction by the cooperation of the ratchet and the pawl. The torsion spring applies force in the direction of causing the head side frame 5 to rotate in the opposite direction of the ratchet mechanism 3, thereby forming a stable support angle of the ratchet mechanism 3 through the torsion spring. When the ratchet mechanism 3 rotates beyond a certain angle, the ratchet mechanism 3 is unlocked, the pawl and the ratchet in the ratchet mechanism 3 are separated, and the ratchet mechanism 3 rotates in the opposite direction of the C-shaped opening of the head side frame 5. The ratchet mechanism 3 belongs to the prior art and will not be described in detail here.

[0046] A first side frame 61 and a second side frame 62 are fixed to both sides of the back frame 1, respectively. The structures of the first side frame 61 and the second side frame 62 are different, but both are connected to the back frame 1 to form a trapezoidal shape. The first side frame 61, the back frame 1 and the second side frame 62 are connected to form a C shape, and the opening direction of the C shape is the same as the C-shaped opening direction of the head side frame 5. In order to strengthen the structural strength of the back frame 1, a reinforcement member 11 is also fixedly connected to the back frame 1. The reinforcement member 11 in this embodiment is a steel bar fixedly connected to the back frame 1 by welding. The reinforcement member 11 can be multiple, and in this embodiment, there are two reinforcement members 11.

[0047] The back frame 1 is also fixedly connected with a bracket 7, which is located at one end of the back frame 1 away from the ratchet mechanism 3. The reset member 4 and the ratchet mechanism 3 are located between the head frame 5 and the back frame 6, and the back frame 6 is located between the head frame 2 and the bracket 7.

[0048] See also Figure 2 The bracket 7 includes a slide groove 71 and a spring piece 72. The opening of the slide groove 71 faces the end away from the ratchet mechanism 3. The spring piece 72 is on the side of the bracket 7 close to the ratchet mechanism 3. The spring piece 72 and the bracket 7 are fixed as a whole by welding, or they can be formed as a whole by stamping. The slide groove 71 is convenient for plugging and matching with the seat frame when assembling the seat. The spring piece 72 is used to abut and fix with the seat frame, which can prevent the two from being separated under a certain external force, and can also be separated by elastic deformation of the spring piece 72 when the external force exceeds a certain limit.

[0049] See also Figure 3 The first side frame 61, the back frame 1 and the second side frame 62 are connected to form a C shape, and the opening direction of the C shape is the same as the opening direction of the C shape of the head side frame 5, both facing upward in the viewing direction.

[0050] Embodiment 2

[0051] See also Figure 4 This embodiment discloses a backrest, including the skeleton assembly in the first embodiment. The backrest also includes a back cushion 8 and a headrest 9. The back cushion 8 and the headrest 9 in this embodiment are made of sponge.

[0052] The processing technology of the back pad 8 is as follows: the frame assembly is placed in a molding mold for positioning, the sponge is filled into the mold cavity and molded by compression molding or injection molding, and the frame assembly is covered and fixed as a whole.

[0053] The molding process of the headrest 9 can also adopt the process of the back pad 8 to fix the headrest 9 and the head frame 2 as one, or the headrest 9 can be separately molded by sponge and then assembled with the head frame 2, or the headrest 9 can be processed by other soft materials and then installed and assembled with the head frame 2, which is easy to disassemble and different headrests 9 can be replaced according to different needs.

[0054] See also Figure 3 and Figure 4 Because the first side frame 61 and the second side frame 62 form a C-shape, the sponge at the center of the back pad 8 is thicker, softer, and has a larger deformation, while the sponge at both sides is thinner and has a smaller deformation. When a person leans on the back, the back of the person will sink into the back pad 8, and the back pad 8 will surround the person, making the person feel more comfortable.

[0055] See also Figure 5 When the backrest is installed, the bracket 7 needs to be connected to the iron frame of the seat, so the bracket 7 needs to be exposed and cannot be wrapped by sponge. Therefore, during the molding process of the back cushion 8, the bracket 7 can be wrapped by the mold insert, or the bracket 7 can be wrapped with a wrapping film in advance and then removed after the production is completed. After molding, the back cushion 8 completely covers the back frame 1, and only the bracket 7 is partially exposed outside the back cushion 8, so as to facilitate the assembly of the backrest seat in the future.

[0056] Embodiment 3

[0057] This embodiment discloses a seat, specifically a sofa seat, comprising a seat cushion and the backrest in the second embodiment, the backrest being connected and fixed to the seat frame of the seat cushion through the bracket 7 of the skeleton assembly. According to design requirements, armrests can be installed on both sides of the sofa seat, and rollers can be installed under the seat.

[0058] 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 skeleton assembly, characterized in that: The invention comprises a back frame (1) and a head frame (2) which are rotatably connected to each other, wherein the back frame (1) and the head frame (2) have at least two rotatable connection parts, one of which is a ratchet mechanism (3) and the other is provided with a reset member (4).

2. The skeleton assembly according to claim 1, characterized in that: Both sides of the back frame (1) are fixedly connected to back side frames (6); the two back side frames (6) have different structures and are connected to the back frame (1) in a C shape.

3. The skeleton assembly according to claim 1 or 2, characterized in that: Head side frames (5) are arranged on both sides of the head frame (2), and the head side frames (5) are connected to the head frame (2) to form a C shape.

4. The skeleton assembly according to claim 3 as cited in claim 2, characterized in that: The opening directions of the C-shape formed by connecting the back frame (6) and the back frame (1) and the C-shape formed by connecting the head frame (5) and the head frame (2) are the same.

5. The skeleton assembly according to claim 4, characterized in that: The resetting member (4) and the ratchet mechanism (3) are located between the head side frame (5) and the back side frame (6).

6. The skeleton assembly according to claim 1 or 5, characterized in that: Brackets (7) are fixedly connected to both sides of the back frame (1), and the brackets (7) are located on a side of the back frame (1) away from the head frame (2).

7. The skeleton assembly according to claim 6 as referenced to claim 5, characterized in that: The back frame (6) is located between the head frame (2) and the support (7).

8. A backrest, characterized in that: Comprising the skeleton assembly as described in any one of claims 1-7.

9. Backrest according to claim 8 as dependent on claim 6, characterized in that It also includes a foamed part, which is foamed and molded with the frame assembly into an integrated structure, and the bracket (7) is at least partially exposed from the foamed part.

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

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