Sofa with automatic lying function

Abstract

The utility model discloses a sofa with an automatic flat lying function, which belongs to the technical field of sofas, and comprises a base, a seat plate, a sofa seat, a sofa seat and a sofa seat, the backrest plate is hinged to the rear side end of the seat plate, and a pressure detection module is mounted on the front surface of the backrest plate; the driving mechanism is mounted on the base and used for driving the backrest plate to overturn between a first position and a second position relative to the seat plate, and the driving mechanism is electrically connected with the pressure detection module; at the first position, the backrest plate is vertical or tends to be vertical to the seat plate; at the second position, the backrest plate is parallel to or tends to be parallel to the seat plate; and the locking structure is used for realizing relative locking between the backrest plate and the base when the backrest plate is at the first position or the second position when the backrest plate does not need to be driven by the driving mechanism to turn over. In the automatic lying mode, the user only needs to lean against the backrest plate, the sofa can be automatically adjusted to be in a lying posture state, and manual operation is not needed.

Description

Technical Field

[0001] This utility model relates to the field of sofa technology, and in particular to a sofa with an automatic reclining function. Background Technology

[0002] In daily life, sofas are a common piece of furniture for people to rest and relax. Traditional sofas have relatively limited functions, and their backrests are mostly designed at a fixed angle, making it difficult for users to adjust the sofa's posture according to their needs and comfort. When people want to lie down and rest, they cannot easily adjust the sofa to a reclining position and can only try to improve comfort by adding cushions, but the effect is very limited, and they will still feel uncomfortable after prolonged use.

[0003] While some traditional sofas do have adjustable backrest angles, these adjustments usually require manual operation, which can be cumbersome. For example, some sofas require users to bend over to adjust knobs or levers on the back, which can be difficult for people with mobility issues, such as the elderly or disabled.

[0004] Therefore, a sofa with an automatic reclining function is needed. Utility Model Content

[0005] This utility model embodiment provides a sofa with an automatic reclining function to solve the problems in the prior art.

[0006] This utility model embodiment adopts the following technical solution: a sofa with an automatic reclining function, comprising: a base on which a seat is mounted; a backrest hinged to the rear end of the seat, and a pressure detection module mounted on the front of the backrest; a drive mechanism mounted on the base for driving the backrest to flip relative to the seat between a first position and a second position, and the drive mechanism being electrically connected to the pressure detection module; in the first position, the backrest is perpendicular or tends to be perpendicular to the seat; in the second position, the backrest is parallel or tends to be parallel to the seat; and a locking structure for locking the backrest relative to the base in the first or second position when the backrest does not need to be flipped by the drive mechanism.

[0007] Preferably, the pressure detection module is configured as a plurality of pressure sensors evenly distributed on the back panel.

[0008] Preferably, the pressure sensor is configured as a strain gauge pressure sensor.

[0009] Preferably, the driving mechanism includes at least one set of driving units, each driving unit comprising: a first hinge seat mounted on the base; a second hinge seat mounted on the back end of the back panel; a linear drive source, the bottom of the housing of which is hinged to the first hinge seat, and the output end of which is hinged to the second hinge seat; the linear drive source operates to push the back panel to flip between a first position and a second position.

[0010] Preferably, a padded layer is installed on the front of the backrest and the upper end of the seat; wherein the pressure detection module is located between the corresponding padded layer and the backrest.

[0011] Preferably, the seat has a first through hole, and the backrest has two opposing first connecting portions and second connecting portions; the locking structure includes: a columnar button with a coaxial circular hole inside, a rotating shaft rotatably connected to the first through hole, the two ends of the rotating shaft being rotatably connected to the circular hole and the second through hole on the first connecting portion, and the button being at least partially rotatably connected to the third through hole on the second connecting portion; the outer circumference of the button near the seat has several limiting strips, and the seat also has A locking groove adjacent to the third through hole; when the backrest and the seat move relative to each other, several limiting strips are slidably disposed in several first limiting grooves on the inner wall of the third through hole to achieve circumferential limiting of the button and the second connecting part; when the backrest is in the first position or the second position, several first limiting grooves correspond to several second limiting grooves in the locking groove. By pressing the button, a portion of the structure of several limiting strips slides into several second limiting grooves to achieve relative locking between the backrest and the base.

[0012] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0013] The sofa features both automatic reclining and manual locking modes, allowing users to choose according to different scenarios and needs. Automatic mode is used when the automatic reclining function is needed, while manual locking mode can be switched to when not in use, making the sofa more flexible and versatile. In automatic reclining mode, users simply need to lean against the backrest, and the sofa will automatically adjust to a reclining position without manual operation, providing great convenience, especially suitable for quick relaxation when tired. The locking mechanism, in manual locking mode, locks the backrest to the base when it is in the first or second position, ensuring the stability and safety of the sofa during use. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a three-dimensional structural diagram of the drive mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the back panel, cushioning layer, and pressure sensor of this utility model;

[0019] Figure 5 This is a schematic diagram showing the connection between the backrest, seat, and locking structure of this utility model;

[0020] Figure 6 This is an exploded view of the backrest, seat, and locking structure of this utility model;

[0021] Figure 7 This is an exploded view of the back panel and button components of this utility model.

[0022] Figure Labels

[0023] 1-Base; 2-Seat plate; 21-First through hole; 22-Rotating shaft; 23-Locking groove; 231-Second limiting groove; 3-Backrest plate; 31-First connecting part; 311-Second through hole; 32-Second connecting part; 321-Third through hole; 322-First limiting groove; 4-Drive mechanism; 41-First hinge seat; 42-Second hinge seat; 43-Linear drive source; 5-Locking structure; 51-Button component; 52-Round hole; 53-Limiting strip; 6-Pressure sensor; 7-Soft pad layer. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1 to 7As shown, this utility model embodiment provides a sofa with an automatic reclining function, mainly including a base 1, a backrest 3, a drive mechanism 4, and a locking structure 5.

[0027] A seat plate 2 is mounted on the base 1; a backrest plate 3 is hinged to the rear end of the seat plate 2, and a pressure detection module is mounted on the front of the backrest plate 3; in some practical applications, the pressure detection module is configured as several pressure sensors 6 evenly distributed on the backrest plate 3, and strain gauge pressure sensors 6 are generally selected.

[0028] A drive mechanism 4 is mounted on the base 1 to drive the backrest 3 to rotate relative to the seat between a first position and a second position, and the drive mechanism 4 is electrically connected to the pressure detection module; in the first position, the backrest 3 is perpendicular to or tends to be perpendicular to the seat; in the second position, the backrest 3 is parallel to or tends to be parallel to the seat; a locking structure 5 is used to lock the backrest 3 relative to the base 1 in the first or second position when the backrest 3 does not need to be rotated by the drive mechanism 4.

[0029] The sofa has two modes: automatic reclining mode and automatic lying mode. When the user leans against the backrest 3, the pressure detection module (composed of several evenly distributed strain gauge pressure sensors 6) installed on the front of the backrest 3 receives pressure, i.e., the user's back is pressing against the pressure detection module. The pressure detection module transmits the detected pressure signal to the electrically connected drive mechanism 4, triggering the drive mechanism 4 to operate. The drive mechanism 4 drives the backrest 3 to flip relative to the seat from a first position (perpendicular or nearly perpendicular to the seat) to a second position (parallel or nearly parallel to the seat), realizing the automatic reclining of the sofa backrest 3, making it convenient for the user to lie on the sofa.

[0030] When the user gets up and leaves the backrest 3, the pressure on the pressure detection module decreases. The drive mechanism 4 then reverses its action based on this reduced pressure signal, causing the backrest 3 to automatically return to its first position. The trigger pressure of the pressure detection module can be adjusted according to actual needs, satisfying the usage habits and requirements of different users. For example, some users prefer to quickly trigger the reclining function when leaning against the backrest, while others prefer a more secure position. Adjusting the trigger pressure allows for personalized settings.

[0031] Manual locking mode: If the user does not need the automatic reclining function of the sofa for a certain period of time, or for some users who do not need the automatic reclining function, the power to the drive mechanism 4 can be cut off to stop it from working. Then, the locking structure 5 locks the backrest 3 of the sofa relative to the base 1 in a specific position (first position or second position) to maintain the stability of the backrest 3 in that position.

[0032] In summary, the sofa features both automatic reclining and manual locking modes, allowing users to choose according to different scenarios and needs. The automatic reclining function is used when needed, and the manual locking mode can be switched to when not in use, making the sofa more flexible and versatile. In automatic reclining mode, users simply need to lean against the backrest 3, and the sofa will automatically adjust to a reclining position without manual operation, providing great convenience, especially suitable for quick relaxation when tired. The locking structure 5, in manual locking mode, ensures a relative lock between the backrest 3 and the base 1 when the backrest 3 is in the first or second position, guaranteeing the stability and safety of the sofa during use.

[0033] In some practical applications, refer to Figures 2 to 3 As shown, the drive mechanism 4 includes at least one set of drive units, each including a first hinge seat 41, a second hinge seat 42, and a linear drive source 43. The first hinge seat 41 is mounted on the base 1; the second hinge seat 42 is mounted on the back end of the back panel 3; the bottom of the housing of the linear drive source 43 is hinged to the first hinge seat 41, and the output end of the linear drive source 43 is hinged to the second hinge seat 42; the linear drive source 43 operates to push the back panel 3 to flip between a first position and a second position.

[0034] In some practical applications, refer to Figure 1 As shown, both the front of the backrest 3 and the upper end of the seat 2 are fitted with cushion layers 7; the pressure detection module is located between the corresponding cushion layer 7 and the backrest 3. The use of cushion layers 7 greatly increases the comfort of the sofa and also protects the pressure detection module. Simultaneously, the cushion layers 7 can evenly distribute the pressure applied by the user, allowing the pressure detection module to more accurately detect pressure changes.

[0035] In some practical applications, the locking structure is designed based on any of the above embodiments: (Refer to...) Figure 1 , Figures 5 to 7 As shown, the seat plate 2 has a first through hole 21, and the backrest plate 3 has two opposing first connecting parts 31 and second connecting parts 32; the locking structure 5 includes a columnar button 51, which has a coaxial circular hole 52 inside. A rotating shaft 22 is rotatably connected inside the first through hole 21. The two ends of the rotating shaft 22 are respectively rotatably connected to the circular hole 52 and the second through hole 311 on the first connecting part 31. The button 51 is at least partially rotatably connected to the third through hole 321 on the second connecting part 32; a plurality of limiting strips 53 are formed on the outer circumference of the button 51 near the seat plate 2, and the seat plate 2 also has a locking groove 23 adjacent to the third through hole 321;

[0036] When the backrest 3 and the seat 2 move relative to each other, several limiting strips 53 are slidably disposed in several first limiting grooves 322 on the inner wall of the third through hole 321 to achieve circumferential limiting of the button 51 and the second connecting part 32; when the backrest 3 is in the first position or the second position, several first limiting grooves 322 correspond to several second limiting grooves 231 in the locking groove 23 respectively. By pressing the button 51, a portion of the structure of several limiting strips 53 slides into several second limiting grooves 231 respectively to achieve relative locking between the backrest 3 and the base 1.

[0037] In this embodiment, the locking structure allows the user to lock the sofa back panel 3 in a first position (vertical or nearly vertical to the seat) or a second position (parallel or nearly parallel to the seat), i.e., using a manual locking mode.

[0038] When the backrest 3 and the seat 2 move relative to each other, the round hole 52 inside the button 51 cooperates with the rotating shaft 22. The two ends of the rotating shaft 22 rotate in the round hole 52 and the second through hole 311 of the first connecting part 31, respectively. The button 51 rotates in the third through hole 321 of the second connecting part 32. At the same time, the limiting strip 53 on the outer circumference of the button 51 can slide in the first limiting groove 322 on the inner wall of the third through hole 321.

[0039] When the backrest 3 reaches the first or second position, the first limiting groove 322 on the inner wall of the third through hole 321 corresponds to the second limiting groove 231 in the locking groove 23 on the seat plate 2. At this time, when the user presses the button 51, the limiting strip 53 on the button 51 will slide along the first limiting groove 322 into the corresponding second limiting groove 231. Through the cooperation of the limiting strip 53 and the second limiting groove 231, the relative locking between the backrest 3 and the base 1 is achieved, fixing the backrest 3 in the current position. When it is necessary to unlock, simply reverse the operation, pull the button 51, and let the limiting strip 53 slide out from the second limiting groove 231 and return completely to the first limiting groove 322. The backrest 3 can then rotate freely relative to the seat plate 2 again.

[0040] Users can lock and unlock the back panel 3 simply by pressing or pulling the button 51. The operation is simple and intuitive, requiring no complicated tools or steps.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sofa with an automatic reclining function, characterized in that, include: A base (1) on which a seat (2) is mounted; The backrest (3) is hinged to the rear end of the seat (2), and a pressure detection module is installed on the front of the backrest (3); A drive mechanism (4) is mounted on the base (1) for driving the backrest (3) to rotate relative to the seat between a first position and a second position, and the drive mechanism (4) is electrically connected to the pressure detection module; in the first position, the backrest (3) is perpendicular to or tends to be perpendicular to the seat; in the second position, the backrest (3) is parallel to or tends to be parallel to the seat. A locking structure (5) is provided to achieve relative locking between the backrest (3) and the base (1) in the first or second position when the backrest (3) is flipped without the need for a drive mechanism (4).

2. A sofa with an automatic reclining function according to claim 1, characterized in that, The pressure detection module is configured as a plurality of pressure sensors (6) evenly distributed on the back panel (3).

3. A sofa with an automatic reclining function according to claim 2, characterized in that, The pressure sensor (6) is configured as a strain gauge pressure sensor (6).

4. A sofa with an automatic reclining function according to claim 1, characterized in that, The drive mechanism (4) includes at least one set of drive units, each drive unit comprising: The first hinge seat (41) is mounted on the base (1); The second hinge seat (42) is installed at the back end of the back plate (3); A linear drive source (43) has its housing bottom hinged to the first hinge seat (41) and its output end hinged to the second hinge seat (42); the linear drive source (43) operates to push the back panel (3) to flip between the first position and the second position.

5. A sofa with an automatic reclining function according to claim 1, characterized in that, The backrest (3) and the upper part of the seat (2) are both equipped with a soft pad (7); wherein the pressure detection module is located between the corresponding soft pad (7) and the backrest (3).

6. A sofa with an automatic reclining function according to claim 1, characterized in that, The seat plate (2) has a first through hole (21), and the backrest plate (3) has two opposing first connecting parts (31) and second connecting parts (32); the locking structure (5) includes: A columnar button (51) has a coaxially arranged circular hole (52) inside. A rotating shaft (22) is rotatably connected inside the first through hole (21). The two ends of the rotating shaft (22) are rotatably connected to the circular hole (52) and the second through hole (311) on the first connecting part (31), respectively. The button (51) is at least partially rotatably connected to the third through hole (321) on the second connecting part (32). A plurality of limiting strips (53) are formed on the outer circumference of the end of the button (51) near the seat plate (2). The seat plate (2) also has a locking groove (23) adjacent to the third through hole (321). When the backrest (3) and the seat (2) move relative to each other, several limiting strips (53) are slidably disposed in several first limiting grooves (322) on the inner wall of the third through hole (321) to achieve circumferential limiting of the button (51) and the second connecting part (32); when the backrest (3) is in the first position or the second position, several first limiting grooves (322) correspond to several second limiting grooves (231) in the lock groove (23). By pressing the button (51), some structures of several limiting strips (53) slide into several second limiting grooves (231) to achieve relative locking between the backrest (3) and the base (1).

7. A sofa with an automatic reclining function according to claim 1, characterized in that, When the user leans against the backrest (3), the user's back presses against the pressure detection module.

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