Sofa with hardness adjusting structure

Abstract

The utility model relates to the technical field of sofas, in particular to a sofa with a hardness adjusting structure, which comprises a sofa base, the top of the sofa base is fixedly connected with a sofa cushion, and the top of the sofa base is provided with an adjusting cavity. An adjusting plate, an adjusting screw rod, an adjusting column, a worm gear and a sofa base plate which are linearly distributed are arranged in the adjusting cavity; the adjusting plate is mounted at the top of the adjusting column, the adjusting screw rod is mounted at the bottom of the adjusting column, the worm gear is mounted on the outer wall of the adjusting screw rod, and the sofa cushion plate is mounted at the bottom of the sofa cushion. When the sofa is used and the adjusting plate moves downwards, the sinking amplitude of the soft cushion of the sofa is increased, and a user feels that the sofa is soft, and when the adjusting plate moves upwards, the sinking amplitude of the soft cushion of the sofa is decreased, and the user feels that the sofa is hard, so that the hardness of the sofa can be adjusted, the use requirement of the user is met, and the sofa is relatively convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a sofa with a hardness adjustment structure. Background Art

[0002] In the furniture world, a "sofa" refers to a cushioned, multi-seat chair with armrests, a type of soft furnishing. It's commonly used in living rooms, lounges, conference rooms, and other spaces, providing a comfortable sitting and lying experience. Sofas come in a variety of styles, including modern minimalist, European classic, and traditional Chinese. The choice depends on your home decor and personal preferences.

[0003] In the prior art, although sofas can be used as a seat for users, the maximum degree to which the support surface of the sofa can be sunken is fixed and cannot be adjusted. This makes it inconvenient for users to adjust the hardness of the sofa according to their own habits, making it difficult to meet the needs of different users. Therefore, a sofa with a hardness adjustment structure is now proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that the hardness of sofas is inconvenient to adjust and cannot meet the needs of users, and to propose a sofa with a hardness adjustment structure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sofa with a hardness adjustment structure comprises a sofa base, a sofa cushion is fixedly connected to the top of the sofa base, an adjustment cavity is opened on the top of the sofa base, and an adjustment plate, an adjustment screw, an adjustment column, a worm gear and a sofa pad are arranged in a linear manner inside the adjustment cavity;

[0007] The adjusting plate is installed on the top of the adjusting column, the adjusting screw is installed on the bottom of the adjusting column, the worm gear is installed on the outer wall of the adjusting screw, and the sofa pad is installed on the bottom of the sofa cushion.

[0008] Preferably, the inner wall of the regulating chamber is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a driving rod, the end of the driving rod away from the servo motor is rotatably connected to the inner wall of the regulating chamber, the outer wall of the driving rod is fixedly connected to a linearly distributed worm, and the worm is meshingly connected to the worm wheel.

[0009] Preferably, the inner wall of the adjustment chamber is fixedly connected to a fixed plate, the adjustment screw is movably connected to the fixed plate through a bearing, the bottom of the adjustment screw is rotationally connected to the inner bottom of the adjustment chamber, and the adjustment screw is fixedly connected to the worm gear.

[0010] Preferably, a cylindrical movable groove is provided at the top of the adjusting column, and a circular limit plate is movably connected to the inner wall of the movable groove, and the bottom of the limit plate is fixedly connected to the top of the adjusting screw, and a threaded hole is provided at the bottom of the adjusting column that passes through the interior of the movable groove, and the adjusting screw is threadedly connected to the threaded hole, and the top of the adjusting column is fixedly connected to the bottom of the adjusting plate.

[0011] Preferably, a linearly distributed spring is fixedly connected to the top of the adjustment plate, the top of the spring is fixedly connected to the bottom of the sofa pad, and the top of the sofa pad is in contact with the bottom of the sofa cushion.

[0012] Preferably, the inner wall of the adjustment cavity is symmetrically provided with limiting grooves which are distributed linearly, and the adjustment plate is slidably connected to the inner wall of the limiting groove.

[0013] Preferably, sofa armrests are fixedly connected to both sides of the bottom of the sofa base, and a sofa cushion is fixedly connected to one side of the sofa base.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When this device is in use, the servo motor will control the rotation of multiple worms through the driving rod, and the multiple worms will respectively control the rotation of multiple adjusting screws through multiple worm gears. The adjusting screws will control the upward or downward movement of the adjusting column and the adjusting plate through the threaded holes. When the adjusting plate moves, the distance from the bottom of the sofa cushion can be increased or decreased. When the adjusting plate moves downward, the sofa cushion sinks more, and the user will feel that the sofa is softer. When the adjusting plate moves upward, the sofa cushion sinks less, and the user will feel that the sofa is harder, thereby realizing the adjustment of the hardness of the sofa, meeting the user's usage needs, and being more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external three-dimensional structure of a sofa with a hardness adjustment structure proposed by the present invention;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of the connection between the adjustment column, the limit plate, the spring, and the adjustment plate;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the servo motor, drive rod, worm, and worm wheel.

[0019] In the figure: 1. Sofa base; 2. Sofa cushion; 3. Adjustment cavity; 4. Adjustment plate; 5. Adjustment screw; 6. Adjustment column; 7. Worm gear; 8. Sofa pad; 9. Servo motor; 10. Drive rod; 11. Worm; 12. Fixed plate; 13. Moving slot; 14. Limit plate; 15. Threaded hole; 16. Spring; 17. Limit slot; 18. Sofa armrest; 19. Sofa cushion. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 3 A sofa with a hardness adjustment structure includes a sofa base 1, a sofa cushion 2 is fixedly connected to the top of the sofa base 1, an adjustment cavity 3 is opened on the top of the sofa base 1, and an adjustment plate 4, an adjustment screw 5, an adjustment column 6, a worm gear 7 and a sofa pad 8 are arranged in a linear distribution inside the adjustment cavity 3;

[0022] The adjusting plate 4 is mounted on the top of the adjusting column 6 , the adjusting screw 5 is mounted on the bottom of the adjusting column 6 , the worm gear 7 is mounted on the outer wall of the adjusting screw 5 , and the sofa pad 8 is mounted on the bottom of the sofa cushion 2 .

[0023] Furthermore, the inner wall of the regulating chamber 3 is fixedly connected to a servo motor 9, the output end of the servo motor 9 is fixedly connected to a drive rod 10, the end of the drive rod 10 away from the servo motor 9 is rotatably connected to the inner wall of the regulating chamber 3, and the outer wall of the drive rod 10 is fixedly connected to a linearly distributed worm 11, which is meshed with the worm wheel 7.

[0024] It should be noted that the specific model and specifications of the servo motor 9 need to be selected based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not explained. The power supply and opening and closing can be controlled by external equipment.

[0025] It should be noted that, through the meshing of the worm 11 and the worm wheel 7 , when the driving rod 10 rotates, the multiple worms 11 and the multiple worm wheels 7 can control the simultaneous rotation of the multiple adjusting screws 5 .

[0026] Furthermore, the inner wall of the adjusting chamber 3 is fixedly connected with a fixing plate 12, the adjusting screw 5 is movably connected to the fixing plate 12 through a bearing, the bottom of the adjusting screw 5 is rotationally connected to the inner bottom of the adjusting chamber 3, and the adjusting screw 5 is fixedly connected to the worm gear 7.

[0027] It should be noted that, through the arrangement of the fixing plate 12 and the bearings, the plurality of adjusting screws 5 can be allowed to rotate stably.

[0028] Furthermore, a cylindrical movable groove 13 is provided at the top of the adjusting column 6, and a circular limit plate 14 is movably connected to the inner wall of the movable groove 13. The bottom of the limit plate 14 is fixedly connected to the top of the adjusting screw 5. A threaded hole 15 that passes through the interior of the movable groove 13 is provided at the bottom of the adjusting column 6. The adjusting screw 5 is threadedly connected to the threaded hole 15, and the top of the adjusting column 6 is fixedly connected to the bottom of the adjusting plate 4.

[0029] It should be noted that, by the movement of the limiting plate 14 inside the movable groove 13 , the adjusting column 6 can be prevented from moving upward and out of the top of the adjusting screw 5 .

[0030] It should be noted that, since the adjusting screw 5 is threadedly connected to the threaded hole 15 , when the adjusting screw 5 rotates, the upward or downward movement of the adjusting column 6 can be controlled through the threaded hole 15 .

[0031] Furthermore, a linearly distributed spring 16 is fixedly connected to the top of the adjustment plate 4 , the top of the spring 16 is fixedly connected to the bottom of the sofa pad 8 , and the top of the sofa pad 8 is in contact with the bottom of the sofa cushion 2 .

[0032] It should be noted that, when the adjustment column 6 and the adjustment plate 4 move downward to the maximum extent, the spring 16 can still control the top of the sofa pad 8 to stick to the bottom of the sofa cushion 2 .

[0033] Furthermore, the inner wall of the regulating cavity 3 is symmetrically provided with limiting grooves 17 which are distributed linearly, and the regulating plate 4 is slidably connected to the inner wall of the limiting groove 17 .

[0034] It should be noted that, by providing the limiting groove 17 , when the adjusting screw 5 rotates, the adjusting plate 4 can be controlled to perform stable vertical linear motion.

[0035] Furthermore, sofa armrests 18 are fixedly connected to both sides of the bottom of the sofa base 1 , and a sofa cushion 19 is fixedly connected to one side of the sofa base 1 .

[0036] Working principle of this utility model:

[0037] The servo motor 9 controls the rotation of multiple worms 11 through the driving rod 10, and the multiple worms 11 control the rotation of multiple adjusting screws 5 through multiple worm gears 7 respectively. The adjusting screws 5 control the upward or downward movement of the adjusting column 6 and the adjusting plate 4 through the threaded hole 15. When the adjusting plate 4 moves, the distance from the bottom of the sofa cushion 2 can be increased or decreased. When the adjusting plate 4 moves downward, the sofa cushion 2 sinks more, and the user will feel that the sofa is softer. When the adjusting plate 4 moves upward, the sofa cushion 2 sinks less, and the user will feel that the sofa is harder, thereby realizing the adjustment of the hardness of the sofa, facilitating the user's usage needs, and being more convenient.

[0038] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A sofa with a hardness adjustment structure, comprising a sofa base (1), characterized in that: A sofa cushion (2) is fixedly connected to the top of the sofa base (1), an adjustment cavity (3) is provided on the top of the sofa base (1), and an adjustment plate (4), an adjustment screw (5), an adjustment column (6), a worm gear (7), and a sofa pad (8) are arranged inside the adjustment cavity (3); The adjusting plate (4) is mounted on the top of the adjusting column (6), the adjusting screw (5) is mounted on the bottom of the adjusting column (6), the worm gear (7) is mounted on the outer wall of the adjusting screw (5), and the sofa pad (8) is mounted on the bottom of the sofa cushion (2).

2. The sofa with a hardness adjustment structure according to claim 1, characterized in that: The inner wall of the regulating chamber (3) is fixedly connected to a servo motor (9), the output end of the servo motor (9) is fixedly connected to a driving rod (10), one end of the driving rod (10) away from the servo motor (9) is rotatably connected to the inner wall of the regulating chamber (3), and the outer wall of the driving rod (10) is fixedly connected to a linearly distributed worm (11), and the worm (11) is meshed with the worm wheel (7).

3. The sofa with a hardness adjustment structure according to claim 1, characterized in that: The inner wall of the adjusting chamber (3) is fixedly connected to a fixing plate (12), the adjusting screw (5) is movably connected to the fixing plate (12) via a bearing, the bottom of the adjusting screw (5) is rotatably connected to the inner bottom of the adjusting chamber (3), and the adjusting screw (5) is fixedly connected to the worm gear (7).

4. The sofa with a hardness adjustment structure according to claim 1, characterized in that: The top of the adjusting column (6) is provided with a cylindrical movable groove (13), the inner wall of the movable groove (13) is movably connected to a circular limiting plate (14), the bottom of the limiting plate (14) is fixedly connected to the top of the adjusting screw (5), the bottom of the adjusting column (6) is provided with a threaded hole (15) which passes through the inside of the movable groove (13), the adjusting screw (5) is threadedly connected to the threaded hole (15), and the top of the adjusting column (6) is fixedly connected to the bottom of the adjusting plate (4).

5. The sofa with a hardness adjustment structure according to claim 1, characterized in that: The top of the adjustment plate (4) is fixedly connected to a linearly distributed spring (16), the top of the spring (16) is fixedly connected to the bottom of the sofa pad (8), and the top of the sofa pad (8) is in contact with the bottom of the sofa cushion (2).

6. The sofa with a hardness adjustment structure according to claim 1, characterized in that: The inner wall of the regulating cavity (3) is symmetrically provided with limiting grooves (17) distributed linearly, and the regulating plate (4) is slidably connected to the inner wall of the limiting groove (17).

7. The sofa with a hardness adjustment structure according to claim 1, characterized in that: Sofa armrests (18) are fixedly connected to both sides of the bottom of the sofa base (1), and a sofa cushion (19) is fixedly connected to one side of the sofa base (1).

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