Sofa framework structure with movable sofa backrest

Abstract

The utility model relates to a sofa framework structure with a movable sofa backrest, aiming at solving the problems that the traditional sofa backrest is inconvenient to fix and adjust, difficult to disassemble and assemble and the like. The structure comprises an elastic seat frame and a backrest frame, the backrest frame sleeves a guide rod through a connecting sleeve, the guide rod is provided with a positioning hole, the position of a backrest is fixed through a pin, and front-back adjustment is achieved; the armrest mounting plate is connected with the elastic seat frame through the quick-insertion assembly, so that disassembly and assembly are convenient; the elastic seat frame adopts the design of front and rear support frames and spring frames, springs provide elastic support, and auxiliary rods enhance the structural stability; the supporting foot nails are detachable, so that height adjustment and maintenance are facilitated. The multifunctional sofa is simple in structure, flexible to adjust, good in stability and suitable for various sofa scenes, and the comfort, the functionality and the practicability are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of sofa technology, specifically to a sofa frame structure with a movable sofa backrest. Background Technology

[0002] As a common piece of furniture in daily life, the comfort and functionality of sofas have always been key concerns for users. Traditional sofa structures typically use a fixed backrest design, meaning the backrest position cannot be adjusted, making it difficult to meet the personalized comfort needs of different users. For example, some users prefer the backrest to be further forward, while others prefer it to be further back to accommodate their semi-reclining or reclining postures. The fixed backrest design cannot accommodate these diverse needs, resulting in a limited user experience.

[0003] Furthermore, existing adjustable-back sofas typically have complex structures, inflexible adjustment mechanisms, and poor stability. For example, some sofas use hinges or sliding rails to adjust the backrest, but these structures often have the following problems:

[0004] Inconvenient to adjust: Users need to exert effort to adjust the backrest position, and the adjustment process is not smooth.

[0005] Insufficient stability: The adjusted backrest is prone to loosening or wobbling, affecting the user experience;

[0006] Complex structure: The complex adjustment mechanism increases the manufacturing cost and maintenance difficulty of the sofa;

[0007] Inconvenient for storage and transportation: The armrests and backrests of traditional sofas are usually fixedly connected and cannot be disassembled or adjusted. This makes it inconvenient to transport and assemble the sofa. Especially in modern home environments, users have higher requirements for the modularity and multifunctionality of furniture, which traditional sofa structures cannot meet.

[0008] Therefore, there is an urgent need for a sofa frame structure that is simple in structure, flexible in adjustment, stable, and easy to disassemble and maintain, in order to solve the above-mentioned problems existing in the prior art. Utility Model Content

[0009] The present invention aims to solve at least one of the technical problems existing in the prior art, and provides a sofa frame structure with a movable sofa back.

[0010] A sofa frame structure with a movable sofa backrest includes an elastic seat frame, and a backrest frame is provided on the rear side of the elastic seat frame.

[0011] The elastic seat frame has guide rods at both ends of the top, and the backrest frame has connecting sleeves at both ends of the bottom. The connecting sleeves are fitted onto the guide rods, and the guide rods have several positioning holes. A pin is set behind the connecting sleeve, and the pin can be inserted into the positioning hole to prevent the connecting sleeve from moving backward along the guide rod.

[0012] Furthermore, the bottom ends of the backrest frame are connected to the connecting sleeve via support plates, and the backrest frame and the support plates are detachably connected.

[0013] The guide rod is cylindrical, and the connecting sleeve is cylindrical;

[0014] The backrest frame is separate from the support plate, and the support plate rotates around the guide rod through a connecting sleeve.

[0015] Furthermore, the elastic seat frame has removable armrest mounting plates on both sides, and a quick-connect assembly is provided between the armrest mounting plate and the elastic seat frame. The quick-connect assembly includes a V-shaped slot installed on the side of the elastic seat frame and a V-shaped insert plate provided on the armrest mounting plate.

[0016] The advantages of this utility model compared with the prior art are as follows: This utility model has a reasonable structure and provides a movable backrest function through innovative structural design, which enhances the comfort and flexibility of the sofa. At the same time, through modular design and stable frame structure, it is easy to disassemble, assemble, store and transport the sofa, which improves the practicality and durability of the sofa.

[0017] Movable backrest design: The backrest frame can move back and forth on the guide rod through the cooperation of the guide rod and the position of the backrest is fixed by inserting pins into the positioning holes. This design allows users to adjust the backrest position as needed, improving comfort and flexibility.

[0018] Detachable armrest design: The armrest mounting plate is connected to the flexible seat frame via a quick-connect assembly. The combination of V-slots and V-plates allows the armrests to be quickly installed and removed, facilitating the assembly, transportation, and maintenance of the sofa.

[0019] Modular design: Components such as the backrest frame and armrest mounting plate adopt a detachable design, which facilitates the modular production and assembly of the sofa and reduces production and maintenance costs;

[0020] Wide range of applications: This structural design is suitable for various types of sofas, especially for occasions where the backrest position needs to be flexibly adjusted, such as living room sofas and office sofas. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a sofa frame structure with a movable sofa backrest according to the present invention.

[0022] Figure 2This is a schematic diagram of the pin arrangement of a sofa frame structure with a movable sofa backrest according to this utility model.

[0023] Figure 3 This is a schematic diagram of a quick-connect assembly for a sofa frame structure with a movable sofa backrest, according to the present invention.

[0024] Figure 4 This is an exploded view of a spring seat frame with a movable sofa backrest, according to the present invention.

[0025] Figure 5 This is a schematic diagram of one use of this utility model.

[0026] As shown in the figure: 1. Guide rod; 2. Connecting sleeve; 3. Positioning hole; 4. Pin; 5. Support plate; 6. Handrail mounting plate; 7. V-slot; 8. V-insertion plate; 9. First crossbar; 10. First support rod; 11. Limiting groove; 12. Second crossbar; 13. Second support rod; 14. Spring; 15. Connecting rod; 16. Auxiliary rod; 17. Slot; 18. Support foot; 19. Auxiliary support rod. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the description of the embodiments of this utility model, if a feature is referred to as "setting", "fixing", "connecting", or "installing" on another feature, it can be set, fixed, or connected directly to the other feature, or it can be set, fixed, connected, or installed indirectly on the other feature.

[0030] In the description of the embodiments of this utility model, the term "several" means one or more, and the term "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number, while the terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features and not as indicating or implying relative importance, the number of indicated technical features, or the order of the indicated technical features.

[0031] The following description, with reference to the accompanying drawings, illustrates an embodiment of the present invention using a dual-cylinder high-pressure pump as an example.

[0032] like Figure 1 and 2 As shown, a sofa frame structure with a movable sofa backrest includes an elastic seat frame, and a backrest frame is provided on the rear side of the elastic seat frame.

[0033] The elastic seat frame has guide rods 1 at both ends of the top, and connecting sleeves 2 at both ends of the bottom of the backrest frame. The connecting sleeves 2 are sleeved on the guide rods 1. The guide rods 1 have several positioning holes 3. A pin 4 is provided behind the connecting sleeve 2, and the pin 4 can be inserted into the positioning holes 3 to prevent the connecting sleeve 4 from moving backward along the guide rods 1. The bottom ends of the backrest frame are connected to the connecting sleeves 2 through support plates 5. The backrest frame and the support plates 5 are detachably connected, for example, by screws.

[0034] The guide rod 1 is cylindrical, and the connecting sleeve 2 is cylindrical;

[0035] The backrest frame is separated from the support plate 5. The support plate 5 rotates around the guide rod 1 through the connecting sleeve 2. For example, after the support plate 5 is separated from the backrest frame, it is rotated and placed on the upper side of the spring frame, reducing space occupation and facilitating storage and transportation.

[0036] As a preferred embodiment of this invention, such as Figure 3 As shown, the elastic seat frame has removable armrest mounting plates 6 on both sides. A quick-connect assembly is provided between the armrest mounting plate 6 and the elastic seat frame. The quick-connect assembly includes a V-shaped slot 7 installed on the side of the elastic seat frame and a V-shaped insert plate 8 provided on the armrest mounting plate 6.

[0037] Align the V-shaped insert 8 on the armrest mounting plate 6 with the V-shaped slot 7 on the side of the elastic seat frame, and insert it forcefully to make the V-shaped insert 8 and the V-shaped slot 7 fit tightly together, thus completing the installation of the armrest. When disassembling, simply pull out the armrest mounting plate 6. This quick-connect design makes the installation and disassembly of the armrest very convenient, facilitating the transportation, assembly and maintenance of the sofa.

[0038] As a preferred embodiment of this invention, such as Figure 1 and 4 As shown, a spring seat frame is provided, the elastic seat frame including two support frames arranged front and rear, and two spring frames symmetrically arranged between the two support frames;

[0039] Each support frame includes a first crossbar 9, with first support rods 10 at both ends of the first crossbar 9 and a limiting groove 11 in the middle of the first crossbar 9;

[0040] Each spring frame is provided with a second crossbar 12 at the front and rear. The second crossbar 12 is provided with a second support rod 13 that can be inserted into the limiting groove 11 at one end. The other end of the second crossbar 12 is provided at the top of the first support rod 10 and is connected by screws. A spring 14 is provided between the two second crossbars 12. A connecting rod 15 is provided between the two second support rods 13. A guide rod 1 is provided in front of the two second crossbars 12 and at the end away from the connecting rod 15.

[0041] An auxiliary rod 16 is provided between the guide rods 1 of the two spring frames. The auxiliary rod 16 is located below the spring 14. The end of the auxiliary rod 16 is provided with a slot 17, which can be locked onto the guide rod 1.

[0042] The elastic seat frame consists of two support frames at the front and back and two symmetrically arranged spring frames, which have a good elastic support effect: when the user sits on the sofa, the spring 14 will elastically deform according to the pressure, providing a comfortable sitting feel; the second support rod 13 of the spring frame is inserted into the limiting groove 11 to ensure the stability of the structure; the auxiliary rod 16 is locked onto the guide rod 1 through the slot 17, further enhancing the strength of the overall structure. This design makes the sofa have good support and durability during use.

[0043] Stable elastic seat frame structure: The elastic seat frame adopts two support frames at the front and back and symmetrically arranged spring frames. The spring frames are inserted into the limiting groove through the second support rod to ensure the stability of the structure. The spring setting provides good elastic support and improves the comfort of the sofa.

[0044] Auxiliary rods enhance structural strength: An auxiliary rod is installed between the two spring frames. The auxiliary rod is secured to the guide rod through a slot, further enhancing the overall strength and stability of the sofa frame.

[0045] As a preferred embodiment of this invention, such as Figure 4 As shown, the bottom of both ends of the first crossbar 9 is provided with detachable support feet 18, and the bottom side of each guide rod 1 is provided with a detachable auxiliary support rod 19. The bottom end of the auxiliary support rod 19 is also provided with support feet 18. For example, the auxiliary support rod 9 is screwed to the guide rod 1, and the top of the support feet 18 is provided with screws to connect with the first crossbar 9 and the auxiliary support rod 19.

[0046] The bottom ends of both ends of the first crossbar 9 and the bottom end of the auxiliary support bar 19 are equipped with detachable support feet 18. Users can adjust the height of the support feet 18 according to the flatness of the ground to ensure that the sofa is placed stably. If the support feet 18 are damaged or need to be replaced, new support feet can be easily removed and installed. This design improves the adaptability and service life of the sofa.

[0047] As a preferred embodiment of this invention, such as Figure 5 As shown, this invention demonstrates a usage method, which combines multiple elastic seat frames and backrest frames. Armrest mounting plates 6 are installed on the outer sides of the elastic seat frames at both ends. Adjacent spring seat frames and two first support rods that are close together can be connected by bolts and nuts. This invention is expandable.

[0048] This utility model, through its innovative structural design, enables the adjustment of the backrest's front and back positions, the convenient disassembly of the armrests and support feet, and the stable support of the elastic seat frame, significantly improving the sofa's comfort, functionality, and practicality. Users can easily adjust various functions of the sofa according to their actual needs and obtain a better user experience.

[0049] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sofa frame construction with a movable sofa backrest, characterized in that: The elastic seat frame is provided with a backrest frame at the rear side thereof; The top ends of the elastic seat frame are provided with guide rods, and the bottom ends of the backrest frame are provided with connecting sleeves which are sleeved on the guide rods; the guide rods are provided with a plurality of positioning holes; a pin is arranged at the rear side of the connecting sleeve, and the pin can be inserted into the positioning hole to prevent the connecting sleeve from moving rearward along the guide rod.

2. A sofa frame structure with a movable sofa backrest according to claim 1, characterized in that: The bottom ends of the backrest frame are connected with the connecting sleeves through supporting plates, and the backrest frame and the supporting plates are detachably connected; The guide rods are in a cylindrical shape, and the connecting sleeves are in a cylindrical shape; The backrest frame is separated from the supporting plates, and the supporting plates are rotated around the guide rods through the connecting sleeves.

3. The sofa frame structure with a movable sofa backrest according to claim 1, characterized in that: The two sides of the elastic seat frame are provided with detachable handrail mounting plates, and the handrail mounting plates and the elastic seat frame are provided with quick insertion assemblies therebetween; the quick insertion assemblies comprise V-shaped insertion slots arranged on the side edges of the elastic seat frame and V-shaped insertion plates arranged on the handrail mounting plates.

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