Sofa with adjustable seat depth

Abstract

The utility model relates to the technical field of sofas, and discloses a seat depth adjustable sofa which comprises a base, a back plate is fixedly connected to the rear end of the base, a cushion is arranged in the base, mounting grooves are formed in the left end and the right end of the base, and threaded rods are rotatably connected to the interiors of the mounting grooves. A first motor is fixedly mounted at the front end in the left mounting groove, one end of a left threaded rod is fixedly connected to the output end of the first motor, the other end of the threaded rod is fixedly connected with a belt pulley, a synchronous belt is arranged on the outer sides of the two belt pulleys, a mounting plate is in threaded connection with the middles of the two threaded rods, and a back cushion is arranged at the front end of the mounting plate. According to the sofa, the seat depth of the sofa can be conveniently adjusted, the sofa is suitable for being used by people with different heights, legs of high people can be conveniently supported, the phenomenon that the feet of short people are suspended when the short people sit is reduced, the comfort degree and the experience feeling in the using process are improved, and therefore the adjustability and the adaptability of the sofa are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a sofa with adjustable seat depth. Background Art

[0002] The word sofa in modern life usually refers to a piece of furniture used for sitting or lying down indoors. It is usually composed of a soft cushion, a backrest and armrests, and may include a removable footstool or cushion. Sofas are available in a variety of designs and materials to suit different home decoration styles and personal preferences. Sofas are common furniture in living rooms, living rooms or bedrooms. They not only provide a place for rest and relaxation, but are also the center of family social activities.

[0003] After searching, a Chinese patent with publication number CN219920685U discloses an angle-adjustable sofa. The sofa is adjusted by electric control or the like during use, but cannot be adjusted to an appropriate angle according to the user's backrest, which is not conducive to the comfort of adjusting the angle of the sofa. Therefore, it is convenient to adjust the angle of the sofa according to the user's backrest, thereby solving the problem that the sofa is not convenient to adjust the angle of the sofa according to the user's backrest.

[0004] There are some shortcomings in the use of the above-mentioned sofa, because different people usually have different requirements for the comfort of the sofa seat depth. Tall people usually need a deeper sofa seat depth to support their thighs, while short people usually need a shallower seat depth to avoid their feet hanging in the air when sitting. The seat depth of the above-mentioned sofa is a fixed size, which is usually not convenient for flexible adjustment of the seat depth according to the comfort of the user. Inappropriate seat depth can easily cause excessive pressure on the back and waist, making it difficult to maintain a stable sitting posture, increasing discomfort, and thus reducing the experience. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a sofa with adjustable seat depth.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sofa with adjustable seat depth, comprising a base, a backboard is fixedly connected to the rear end of the base, a seat cushion is arranged inside the base, mounting grooves are arranged inside the left and right ends of the base, a threaded rod is rotatably connected inside the mounting groove, a motor 1 is fixedly installed on the inner front end of the mounting groove on the left side, one end of the threaded rod on the left side is fixedly connected to the output end of the motor 1, the other end of the threaded rod is fixedly connected to a pulley, a synchronous belt is arranged on the outer sides of the two pulleys, a mounting plate is threadedly connected to the middle parts of the two threaded rods, a cushion is arranged at the front end of the mounting plate, two rotating rods are rotatably connected to the middle part of the rear end of the mounting plate, a slider is rotatably connected to the other end of the rotating rod, two sliding grooves are arranged in the middle part of the front end of the backboard, and the outer side of the slider is slidably connected to the inside of the sliding groove.

[0007] As a further description of the above technical solution:

[0008] The left and right ends of the base are both provided with threaded grooves, the inner sides of the threaded grooves are threadedly connected with screw rods, and the other ends of the two screw rods are rotatably connected with the bottom shell.

[0009] As a further description of the above technical solution:

[0010] The bottom end of the screw rod is fixedly connected with a first helical gear, and the middle part of the bottom shell is rotatably connected with a connecting rod.

[0011] As a further description of the above technical solution:

[0012] Both ends of the connecting rod are fixedly connected with the second helical gear, and the first helical gear and the second helical gear are meshingly connected.

[0013] As a further description of the above technical solution:

[0014] A second motor is fixedly installed in the middle of the inner side of the bottom shell, a first bevel gear is fixedly connected to the output end of the second motor, and a second bevel gear is fixedly connected to the middle of the connecting rod.

[0015] As a further description of the above technical solution:

[0016] The bevel gear 1 is meshed with the bevel gear 2, and the bottom end of the base is provided with stabilizing grooves near the four corners.

[0017] As a further description of the above technical solution:

[0018] The bottom shell is fixedly connected with stabilizing columns near four corners, and the outer sides of the stabilizing columns are slidably connected to the inner sides of the stabilizing grooves.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, through the mutual cooperation of the mounting groove, the threaded rod, the pulley, the synchronous belt, the mounting plate, the rotating rod, the slider and the slide groove, the sofa is provided with the function of facilitating the adjustment of the seat depth when in use, which is conducive to adapting to the use of people of different heights, facilitating the support of the legs of the tall people, reducing the phenomenon of the feet of the short people hanging in the air when sitting, improving the comfort and experience during use, thereby improving the adjustability and adaptability of the sofa, reducing the phenomenon of excessive pressure on the back and waist of the user due to inappropriate seat depth, thereby reducing the damage to the waist caused by sitting for a long time.

[0021] 2. In the utility model, the threaded groove, the screw, the first bevel gear, the connecting rod, the second bevel gear, the bevel gear 1, the bevel gear 2, the stabilizing column and the stabilizing groove cooperate with each other, so that the height of the sofa can be flexibly adjusted when the user sits down, which is conducive to adjusting the height of the sofa according to the user's own leg length and use requirements. When the elderly sit down, the sofa is lowered, which enhances the safety of the elderly when sitting down, and it is convenient to adjust the distance between the base of the sofa and the ground, so as to facilitate cleaning of the space at the bottom of the sofa, and reduce the phenomenon of dirt and grime hidden due to the close distance between the bottom of the sofa and the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a sofa with adjustable seat depth proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the backboard structure of a sofa with adjustable seat depth proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the base structure of a sofa with adjustable seat depth proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a stabilizing column of a sofa with adjustable seat depth proposed by the utility model;

[0026] Figure 5 This is a schematic diagram of the mounting plate structure of a sofa with adjustable seat depth proposed by the utility model;

[0027] Figure 6 The utility model discloses a schematic diagram of the first bevel gear structure of a sofa with adjustable seat depth.

[0028] Legend:

[0029] 1. Base; 2. Back plate; 3. Cushion; 4. Mounting slot; 5. Threaded rod; 6. Motor 1; 7. Pulley; 8. Synchronous belt; 9. Stabilizing column; 10. Mounting plate; 11. Cushion; 12. Rotating rod; 13. Slider; 14. Slide slot; 15. Threaded slot; 16. Screw; 17. Bottom shell; 18. First bevel gear; 19. Connecting rod; 20. Second bevel gear; 21. Motor 2; 22. Bevel gear 1; 23. Bevel gear 2; 24. Stabilizing slot. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] As attached Figure 1-6 As shown, an embodiment of the utility model is provided: a sofa with adjustable seat depth, comprising a base 1, a back plate 2 is fixedly connected to the rear end of the base 1, a cushion 3 is arranged inside the base 1, mounting grooves 4 are arranged inside the left and right ends of the base 1, a threaded rod 5 is rotatably connected inside the mounting groove 4, a motor 6 is fixedly installed at the front end of the left mounting groove 4, one end of the left threaded rod 5 is fixedly connected to the output end of the motor 6, the other end of the threaded rod 5 is fixedly connected to a pulley 7, a synchronous belt 8 is arranged on the outer side of the two pulleys 7, a mounting plate 10 is threadedly connected to the middle part of the two threaded rods 5, and the front of the mounting plate 10 A cushion 11 is provided at the end, and two rotating rods 12 are rotatably connected to the middle part of the rear end of the mounting plate 10, and the other end of the rotating rod 12 is rotatably connected to a slider 13. Two sliding grooves 14 are provided in the middle part of the front end of the back plate 2, and the outer side of the slider 13 is slidably connected to the inside of the sliding groove 14. The rotation of the two threaded rods 5 is conducive to driving the movement of the mounting plate 10, thereby driving the cushion 11 to adjust the seat depth. When the mounting plate 10 moves forward, it pulls the rotating rod 12 to rotate, so that the rotating rod 12 rotates and drives the slider 13 to slide inside the sliding groove 14, thereby improving the stability of the mounting plate 10 when moving and enhancing the supporting effect.

[0032] As attached Figure 6As shown, thread grooves 15 are provided inside the left and right ends of the base 1, and the inner side of the thread groove 15 is threadedly connected with a screw rod 16, and the other ends of the two screw rods 16 are rotatably connected to a bottom shell 17, and the bottom end of the screw rod 16 is fixedly connected to a first bevel gear 18, and the middle part of the bottom shell 17 is rotatably connected to a connecting rod 19, and both ends of the connecting rod 19 are fixedly connected to a second bevel gear 20, and the first bevel gear 18 and the second bevel gear 20 are meshingly connected. The outer side of the stabilizing column 9 is slidably connected to the inner side of the stabilizing groove 24, and according to the meshing of the first bevel gear 18 and the second bevel gear 20, it is convenient to drive the two screw rods 16 to rotate on the inner side of the thread groove 15, so as to facilitate the lifting and lowering of the base 1, facilitate the height adjustment according to the leg length of the user, and facilitate the cleaning of dust at the bottom of the base 1.

[0033] As attached Figure 4 As shown, a motor 21 is fixedly installed in the middle of the inner side of the bottom shell 17, and a bevel gear 1 22 is fixedly connected to the output end of the motor 21. A bevel gear 23 is fixedly connected to the middle part of the connecting rod 19, and the bevel gear 1 22 and the bevel gear 2 23 are meshingly connected. Stable grooves 24 are provided near the four corners at the bottom end of the base 1, and stable columns 9 are fixedly connected near the four corners of the bottom shell 17. The stable columns 9 slide inside the stable columns 24 to improve the stability of the lifting and lowering of the base 1, and the bevel gear 1 22 drives the bevel gear 2 23 to move, which is convenient for the output of the rotational force at the output end of the motor 21.

[0034] Working principle: after using the sofa, a shallower seat depth is required, so when the seat depth of the sofa is adjusted, the motor 6 is started, and the output end of the motor 6 drives the threaded rod 5 at the left end to rotate, so that the threaded rod 5 at the left end drives the pulley 7 at the left end to rotate, and when the pulley 7 at the left end rotates, the synchronous belt 8 is driven to move, and the synchronous belt 8 is connected to the threaded rod 5 at the right end, thereby driving the pulley 7 on the right side to rotate, so as to drive the threaded rods 5 on both sides to rotate at the same time. When the threaded rods 5 on both sides rotate at the same time, it is convenient for the threaded rods 5 on both sides to drive the mounting plate 10 to move forward at the same time. When the mounting plate 10 moves, it drives the rotating rod 12 on the rear side to rotate, and when the rotating rod 12 rotates, it drives the slider 13 to move inside the slide groove 14 through the forward movement of the mounting plate 10, so that the mounting plate 10 drives the cushion 11 to move forward, which is conducive to shrinking. The size and area of ​​the short seat cushion 3 are convenient for adjusting the sofa seat depth to a shallower state. When the sofa needs to be raised, the motor 21 inside the bottom shell 17 is started, so that the output end of the motor 21 drives the bevel gear 1 22 to rotate. Due to the meshing of the bevel gear 1 22 and the bevel gear 2 23, the bevel gear 2 23 is driven to rotate, which is conducive to driving the connecting rod 19 to rotate through the rotation of the bevel gear 23, so that the connecting rod 19 drives the second bevel gear 10 at both ends to rotate. Since the second bevel gear 10 is meshed with the first bevel gear 18, it is convenient for the second bevel gear 20 to drive the first bevel gear 18 to rotate, so that the first bevel gear 18 drives the screw rod 16 to rotate on the inner side of the thread groove 15, and the screw rod 16 is moved up and down under the connection of the thread, which is convenient for adjusting the height of the sofa, so as to adapt to users of different heights.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sofa with adjustable seat depth, comprising a base (1), characterized in that: The rear end of the base (1) is fixedly connected to a back plate (2), a cushion (3) is arranged inside the base (1), mounting grooves (4) are arranged inside the left and right ends of the base (1), a threaded rod (5) is rotatably connected inside the mounting groove (4), a motor (6) is fixedly installed inside the front end of the left mounting groove (4), one end of the left threaded rod (5) is fixedly connected to the output end of the motor (6), and the other end of the threaded rod (5) is fixedly connected to a pulley (7), and the two A synchronous belt (8) is arranged on the outer side of the pulley (7); a mounting plate (10) is threadedly connected to the middle parts of the two threaded rods (5); a cushion (11) is arranged at the front end of the mounting plate (10); two rotating rods (12) are rotatably connected to the middle part of the rear end of the mounting plate (10); a slider (13) is rotatably connected to the other end of the rotating rod (12); two sliding grooves (14) are arranged in the middle part of the front end of the back plate (2); the outer side of the slider (13) is slidably connected to the inside of the sliding groove (14).

2. The sofa with adjustable seat depth according to claim 1, characterized in that: The left and right ends of the base (1) are both provided with threaded grooves (15), the inner sides of the threaded grooves (15) are threadedly connected with screw rods (16), and the other ends of the two screw rods (16) are rotatably connected with a bottom shell (17).

3. The sofa with adjustable seat depth according to claim 2, characterized in that: The bottom end of the screw rod (16) is fixedly connected to a first helical gear (18), and the middle part of the bottom shell (17) is rotatably connected to a connecting rod (19).

4. The sofa with adjustable seat depth according to claim 3, characterized in that: Both ends of the connecting rod (19) are fixedly connected to a second helical gear (20), and the first helical gear (18) and the second helical gear (20) are meshingly connected.

5. The sofa with adjustable seat depth according to claim 4, characterized in that: A second motor (21) is fixedly mounted in the middle of the inner side of the bottom shell (17), an output end of the second motor (21) is fixedly connected to a first bevel gear (22), and a middle portion of the connecting rod (19) is fixedly connected to a second bevel gear (23).

6. The sofa with adjustable seat depth according to claim 5, characterized in that: The bevel gear 1 (22) is meshedly connected with the bevel gear 2 (23), and the bottom end of the base (1) is provided with stabilizing grooves (24) near the four corners.

7. The sofa with adjustable seat depth according to claim 6, characterized in that: The bottom shell (17) is fixedly connected to stabilizing columns (9) near the four corners, and the outer side of the stabilizing column (9) is slidably connected to the inner side of the stabilizing groove (24).

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