Seat frame structure for sofa

Abstract

The utility model discloses a seat frame structure for a sofa, which belongs to the technical field of furniture and comprises a frame and a bottom support. A plurality of pressure springs are distributed in the frame and form a plurality of unit assemblies, the pressure springs in each unit assembly are arranged in a circular or polygonal mode, and each pressure spring is provided with a plurality of tension spring assemblies extending in the radial direction of the pressure spring. Two adjacent groups of pressure springs, the pressure springs close to the frame and the frame, and the plurality of pressure springs in the same unit assembly are connected together through tension spring assemblies; the diameter of the compression spring is large at two ends and small in the middle, the tension spring assembly is formed by connecting one tension spring or a plurality of tension springs in series, and the diameter of the tension spring is small at two ends and large in the middle. The height of the seat frame structure is increased, the elasticity is good, the buffering effect is good, the deformation in the vertical direction is large, the edges are hard, the middle is soft, and the comfort is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture, and in particular relates to a seat frame structure for a sofa. Background Art

[0002] At present, there are many types of sofas, and the materials of sofas are various, but most of the sofas are directly filled with sponge materials. The production cost of sponge filling is relatively high, and direct sponge filling requires the sponge to be made into a corresponding shape, which is very time-consuming and labor-intensive in the production process. Moreover, if sponge filling is used for too long, the sponge will be deformed and cannot be restored to its original state, and the life of the sofa will be short.

[0003] To address this problem, sofas currently on the market all have bow springs installed under the seat cushions. The two ends of the spring body are bent downward to form a buffer portion, and the bow spring is formed into a strip by continuous S-shaped bending of a steel wire. The two ends of the bow spring are directly connected and fixed to the sofa base plate, thereby increasing the elasticity of the sofa and thereby increasing the comfort of sitting. However, with long-term use, the bow spring is prone to deformation, dents and other problems, affecting people's comfort and the life of the sofa.

[0004] In order to overcome the above technical problems, another sofa spring structure has appeared on the market, such as Figure 1 As shown, it includes a sofa frame and a tension spring. The sofa frame includes a base plate and a frame, and also includes a matrix-arranged compression spring. The compression spring is conical and spiral. A screw hole is provided at the conical tip of the lower end of the compression spring. The compression spring is fixedly connected to the base plate through a screw passing through the screw hole, and the upper end of the compression spring is connected through a tension spring. The compression spring close to the frame is connected to the frame through a tension spring. Although the sofa spring structure overcomes the problem that the bow spring in the sofa is prone to deformation and concavity, the sofa spring also has another problem, such as: insufficient height, small deformation in the vertical direction, uneven distribution of softness and hardness, and poor comfort. Utility Model Content

[0005] The utility model aims to provide a seat frame structure for a sofa, which not only increases the height of the seat frame structure, but also has good elasticity, good buffering, large deformation in the vertical direction, hard edges and soft middle, and better comfort.

[0006] To achieve the purpose of the utility model, the technical solution adopted is: a seat frame structure for a sofa, comprising a frame and a bottom support; a plurality of compression springs are arranged in the frame, the plurality of compression springs form a plurality of unit assemblies, the plurality of compression springs in each unit assembly are arranged in a circular or polygonal manner, and each compression spring is provided with a plurality of tension spring assemblies extending radially therefrom, and the compression springs between two adjacent groups, between the compression springs close to the frame and the frame, and the plurality of compression springs in the same unit assembly are connected together through the tension spring assembly; the diameter of the compression spring is larger at both ends and smaller in the middle, and the tension spring assembly is one tension spring or is formed by a plurality of tension springs connected in series, and the diameter of the tension spring is smaller at both ends and larger in the middle.

[0007] Furthermore, the bottom support is a flat steel arranged at intervals along the width direction of the frame or the length direction of the frame, and the compression springs in the same row or column are installed on the same flat steel.

[0008] Furthermore, the flat steel also has a clamp corresponding to the compression spring, and the lower end of the compression spring is fixed to the flat steel through the clamp.

[0009] Furthermore, the clamping piece extends upwardly from the vertical flat steel, and there are two clamping pieces corresponding to each compression spring, and the distance between the outer walls of the two clamping pieces matches the inner diameter clearance of the lower end of the compression spring.

[0010] Furthermore, the flat steel is U-shaped, and has horizontally extending mounting portions at both ends of the flat steel, and the mounting portions are fixed on the frame.

[0011] Furthermore, the plurality of compression springs in the unit assembly are arranged in a rectangular shape, and the plurality of tension spring assemblies are arranged in a cross-shaped pattern on the compression spring.

[0012] Furthermore, a plurality of mounting ears are installed on the frame, and the tension spring assembly extending toward the frame is hung on the mounting ears.

[0013] Furthermore, a circular ring is provided at the center of the same unit assembly, and the tension spring assemblies on the compression springs in the same unit assembly that need to be connected together are all hung on the circular ring.

[0014] The beneficial effects of the utility model are:

[0015] In the utility model, the overall height is increased by changing the structure of the compression spring and the tension spring, and the compression spring has good elasticity and good buffering, so that the compression spring has a larger deformation in the vertical direction when subjected to the same pressure; at the same time, the tension spring has better softness, so that the utility model is softer and more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings illustrate exemplary embodiments of the present invention and are used to explain the principles of the present invention together with the description. These drawings are included to provide a further understanding of the present invention, and the drawings are included in and constitute a part of this specification.

[0017] Figure 1 It is a structural schematic diagram of a spring structure for a sofa in the prior art provided by the utility model;

[0018] Figure 2 It is a structural schematic diagram of a seat frame structure for a sofa provided by the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of flat steel;

[0020] Figure 4 It is a structural diagram of a tension spring;

[0021] Figure 5 It is a structural diagram of the compression spring.

[0022] Markings and corresponding parts names in the attached drawings:

[0023] 1. Frame, 2. Compression spring, 3. Tension spring, 4. Flat steel, 5. Clamp, 6. Mounting part, 7. Ring, 8. Mounting ear. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and implementations. It is to be understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] like Figure 2 - Figure 5As shown, the utility model provides a sofa seat frame structure, including a frame 1 and a bottom support, the bottom support is installed on the frame 1; a plurality of compression springs 2 are arranged in the frame 1, and the plurality of compression springs 2 are divided into a plurality of unit components, and the compression springs 2 in each unit component can be 3, 4, 5, etc., and the plurality of compression springs 2 in each unit component can be arranged in a circular, triangular, rectangular, regular pentagonal, etc. manner. The upper end of each compression spring 2 is connected to a plurality of tension spring components extending radially thereto, so that the plurality of compression springs 2 in the same unit component can be connected together through the plurality of tension spring components, and the adjacent two compression springs 2 can also be connected through the tension spring components, and the compression spring 2 close to the frame 1 can also be connected to the frame 1 through the tension spring components. When the plurality of compression springs 2 in the same unit component are connected together through the plurality of tension spring components, each compression spring 2 in the same unit component has a tension spring component extending toward the center of the unit component, and then these tension spring components extending toward the center of the unit component are connected together.

[0027] In the present invention, the tension spring assembly can be one tension spring 3, or it can be formed by a plurality of tension springs 3 connected in series. Specifically, when the distance between two adjacent compression springs 2 is small, the tension spring assembly connecting the two adjacent compression springs 2 can use one tension spring 3; when the distance between two adjacent compression springs 2 is large, the tension spring assembly connecting the two adjacent compression springs 2 can use a tension spring assembly formed by a plurality of tension springs 3 connected in series; when the tension spring assembly extending toward the center of the unit assembly on the compression spring 2 is long, the tension spring assembly extending toward the center of the unit assembly on the compression spring 2 can also use a tension spring assembly formed by a plurality of tension springs 3 connected in series. In the present invention, the specific selection of the tension spring assembly can be determined according to the required length of the tension spring assembly.

[0028] In the present invention, after the compression spring 2 is installed, the upper end of the compression spring 2 is higher than the upper surface of the frame 1 when the compression spring 2 is not subjected to force. The diameter of the compression spring 2 is larger at both ends and smaller in the middle, so that the compression spring 2 in the present invention is not only increased in height compared with the cylindrical compression spring 2 and the conical compression spring 2, but also has a larger deformation in the vertical direction under the same pressure, good elasticity and good buffering; the diameter of the tension spring 3 is smaller at both ends and larger in the middle, so that the tension spring 3 in the present invention is more flexible than the cylindrical tension spring 3, so that when the tension spring 3 provided by the utility model is subjected to a vertical downward force in a horizontally extended state, the plane formed by the tension spring assembly and the compression spring 2 is softer, thereby greatly improving the comfort of the utility model.

[0029] In some embodiments, since the compression springs 2 in each unit assembly are arranged in a circular or polygonal shape, all the compression springs 2 in the frame 1 are arranged in multiple rows and columns, and the bottom support is a plurality of flat steels 4, and the plurality of flat steels 4 are arranged at intervals along the width direction of the frame 1 or the length direction of the frame 1, so that when the compression springs 2 are installed, the compression springs 2 in the same row or the compression springs 2 in the same column can be installed on the same flat steel 4. By using flat steels 4 to replace the wooden boards or wooden strips in the existing frame 1, the flat steels 4 can be deformed to a certain extent when subjected to a vertical downward force, and can play a certain buffering role while ensuring that sufficient support force is provided for the compression springs 2, so that the use effect of the utility model is better; at the same time, the flat steels 4 are stronger than wooden boards or wooden strips, making the utility model more solid. Of course, the flat steels 4 in the utility model are only used to refer to metals in the form of flat strips, and are not used to limit their materials, that is, the flat steels 4 in the utility model can also be made of other metal materials.

[0030] In some embodiments, in order to facilitate the installation of the compression spring 2, a clamp 5 can also be provided on the flat steel 4, so that when the compression spring 2 needs to be installed, the lower end of the compression spring 2 can be fixed to the flat steel 4 through the clamp 5, making the installation method of the compression spring 2 simpler than the screw fixing method.

[0031] In some embodiments, the clamp 5 extends upward perpendicular to the flat steel 4. Specifically, when the flat steel 4 is processed, a U-shaped path can be punched on the flat steel 4, and then the inner part of the U-shaped path on the flat steel 4 is turned up, thereby forming the clamp 5. In the utility model, each compression spring 2 corresponds to two clamps 5. When the compression spring 2 is installed, the two clamps 5 are both located on the diameter of the compression spring 2, and the distance between the outer side surface of one clamp 5 and the outer side surface of the other clamp 5 is slightly larger than the inner diameter of the lower end of the compression spring 2. When the compression spring 2 is installed, the lower end of the compression spring 2 is clamped together outside the two clamps 5, thereby fixing the compression spring 2 to the flat steel 4, making the installation of the compression spring 2 faster and more convenient.

[0032] In some embodiments, in order to facilitate the installation of the flat steel 4, the flat steel 4 can be set to a U shape, the horizontal section of the flat steel 4 is higher than the lower surface of the frame 1, and the two vertical parts of the flat steel 4 are in contact with the inner wall of the frame 1; at the same time, both ends of the frame 1 also have horizontally extending mounting parts 6, and the mounting parts 6 have screw holes. When the flat steel 4 needs to be installed, the mounting parts 6 of the flat steel 4 can be fixed to the upper surface of the frame 1 with screws, making the installation of the flat steel 4 more convenient. Since the flat steel 4 is U-shaped, when the flat steel 4 is subjected to a vertical force, the horizontal section of the flat steel 4 is deformed downward, and the two vertical parts of the flat steel 4 can be tilted toward the middle to a certain extent, so that the horizontal part of the flat steel 4 is deformed downward by a larger amount, thereby making the buffering effect of the utility model better.

[0033] In some embodiments, the multiple compression springs 2 in the unit assembly are arranged in a rectangular shape, and the multiple tension spring assemblies are arranged in a cross shape on the compression spring 2, so that the number of tension spring assemblies used in the utility model is greater than the number of tension springs 3 used in the existing spring structure mentioned in the background technology of the utility model. While ensuring that the utility model has sufficient softness, the force-bearing surface is more solid, avoiding the generation of depressions between two adjacent groups of tension spring assemblies during use.

[0034] In some embodiments, in order to facilitate the connection between the tension spring assembly extending toward the frame 1 on the compression spring 2 and the frame 1, a mounting ear 8 can be fixed on the upper surface of the frame 1 by screws, and a hole can be reserved on the mounting ear 8. The extended end of the tension spring assembly extending toward the frame 1 on the compression spring 2 can be directly hung on the mounting ear 8, making the connection between the tension spring assembly and the frame 1 more convenient.

[0035] In some embodiments, in order to facilitate the common connection of the tension spring assemblies extending toward the center of the unit assembly on multiple compression springs 2 in the same unit assembly, a ring 7 can also be set in the center of the unit assembly, and the tension springs 3 extending toward the center of the unit assembly on the compression springs 2 in the same unit assembly can all be hung on the ring 7, making it more convenient for the tension spring assemblies extending toward the center of the unit assembly on multiple compression springs 2 in the same unit assembly to be connected together.

[0036] In order to ensure the overall support of the sofa, the seat frame structure provided by the utility model can be a sofa position. At this time, there are four compression springs 2 in the frame 1, and the four compression springs 2 are arranged in a rectangular shape. When a sofa with multiple sofa positions needs to be produced, multiple sofa positions provided by the utility model can be fixed together in sequence.

[0037] In addition, the frame 1 in the utility model can be selected according to the shape of the sofa cushion. For example, when the sofa cushion is rectangular, the frame 1 can be rectangular, and when the sofa cushion is round, the frame 1 can be round or oval. When the frame 1 is round, the unit assembly can be round or regular polygonal, and at this time, a compression spring 2 can be installed in the center of the unit assembly.

[0038] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A seat frame structure for a sofa, characterized in that: The invention comprises a frame (1) and a bottom support; a plurality of compression springs (2) are arranged in the frame (1), the plurality of compression springs (2) form a plurality of unit assemblies, the plurality of compression springs (2) in each unit assembly are arranged in a circular or polygonal manner, and each compression spring (2) is provided with a plurality of tension spring assemblies extending radially therefrom, and two adjacent groups of compression springs (2), between the compression spring (2) close to the frame (1) and the frame (1), and the plurality of compression springs (2) in the same unit assembly are connected together through the tension spring assembly; the diameter of the compression spring (2) is larger at both ends and smaller in the middle, and the tension spring assembly is a tension spring (3) or is formed by connecting a plurality of tension springs (3) in series, and the diameter of the tension spring (3) is smaller at both ends and larger in the middle.

2. The seat frame structure for a sofa according to claim 1, characterized in that: The bottom support is a flat steel (4) arranged at intervals along the width direction of the frame (1) or the length direction of the frame (1), and the compression springs (2) located in the same row or in the same column are installed together on the same flat steel (4).

3. The seat frame structure for a sofa according to claim 2, characterized in that: The flat steel (4) also has a clamping piece (5) corresponding to the compression spring (2), and the lower end of the compression spring (2) is clamped on the flat steel (4) through the clamping piece (5).

4. The seat frame structure for a sofa according to claim 3, characterized in that: The clamping piece (5) extends upwardly perpendicular to the flat steel (4), and each compression spring (2) has two clamping pieces (5) corresponding thereto, and the distance between the outer walls of the two clamping pieces (5) matches the inner diameter clearance of the lower end of the compression spring (2).

5. The seat frame structure for a sofa according to claim 2, characterized in that: The flat steel (4) is U-shaped, and both ends of the flat steel (4) are provided with horizontally extending mounting portions (6), and the mounting portions (6) are fixed on the frame (1).

6. The seat frame structure for a sofa according to claim 1, characterized in that: The plurality of compression springs (2) in the unit assembly are arranged in a rectangular shape, and the plurality of tension spring assemblies are arranged on the compression spring (2) in a cross-shaped arrangement.

7. The seat frame structure for a sofa according to claim 1, characterized in that: The frame (1) is also provided with a plurality of mounting ears (8), and a tension spring assembly extending toward the frame (1) is hung on the mounting ears (8).

8. The seat frame structure for a sofa according to claim 1, characterized in that: A circular ring (7) is provided at the center of the same unit assembly, and the tension spring assemblies on the compression springs (2) in the same unit assembly that need to be connected together are all hung on the circular ring (7).

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