CN217337953U

CN217337953U - Sofa with changeable sitting and lying

Info

Publication number: CN217337953U
Application number: CN202122863784.9U
Authority: CN
Inventors: 李云海; 冯海龙; 赵鑫建
Original assignee: Kuka Home Co Ltd
Current assignee: Kuka Home Co Ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-09-02
Anticipated expiration: 2031-11-18

Abstract

The application relates to a variable sofa for sitting and lying, which comprises a base and a backrest, wherein a cushion is arranged on the base in a sliding manner, a back cushion is arranged on one side of the backrest, which is close to the base, a fulcrum part is also arranged on the backrest, and the back cushion is abutted against the upper surface of the fulcrum part; the base is rotatably connected with a rotating part, the rotating part comprises a first arm and a second arm, one end of the first arm, which is far away from a rotating shaft of the rotating part, is rotatably connected to the lower end of the back cushion, and the cushion is provided with a linkage part; when the cushion moves towards the direction far away from the backrest, the linkage part pushes or pulls the second arm to rotate towards the direction far away from the backrest, and the first arm rotates along with the second arm and drives the lower end of the back cushion to move upwards and towards the cushion moving direction. This application is realizing that the sofa back can overturn but can not influence under the prerequisite of sofa article behind one's back, reduces sofa flip structure's complexity.

Description

Sofa with changeable sitting and lying

Technical Field

The application relates to the field of furniture, in particular to a sofa with variable sitting and lying positions.

Background

The sofa has various functions, two main functions in the market at present are additional functions and self-optimization functions, the additional functions comprise sound modules, heating modules, massage modules and other functional modules which are additionally arranged on the sofa and do not belong to the field of the sofa originally, and the self-optimization functions comprise functional modules which are transformed in the field of the sofa, such as backrest lifting, backrest overturning, sofa swinging and the like.

In view of the self-optimization function, the backrest turning function (which is essentially a variable sitting and lying function) is the most common, but the problem that the backrest needs to be turned backwards to affect objects at the back of the sofa generally exists in the current backrest turning, so that the sofa with a part of the lower end of the backrest moving forwards to reduce the inclination angle of the backrest also comes into the market, but the sofa is usually complex in structure.

SUMMERY OF THE UTILITY MODEL

In order to reduce the complexity of the turnover structure of the sofa on the premise that the turnover of the backrest of the sofa is realized but the articles at the back of the sofa are not affected, the application provides the variable sofa with the function of sitting and lying.

The application provides a sit variable sofa of lying adopts following technical scheme:

a variable sofa for sitting and lying comprises a base and a backrest, wherein a seat cushion is arranged on the base in a sliding mode, a back cushion is arranged on one side, close to the base, of the backrest, a fulcrum part is further arranged on the backrest, and the back cushion abuts against the upper surface of the fulcrum part; the base is rotatably connected with a rotating part, the rotating part comprises a first arm and a second arm, one end of the first arm, which is far away from a rotating shaft of the rotating part, is rotatably connected to the lower end of the back cushion, and the cushion is provided with a linkage part; when the cushion moves towards the direction far away from the backrest, the linkage part pushes or pulls the second arm to rotate towards the direction far away from the backrest, and the first arm rotates along with the second arm and drives the lower end of the back cushion to move upwards and towards the cushion moving direction.

By adopting the technical scheme, when the sofa needs to be changed into a lying sofa, a user only needs to push the cushion forward by the force of feet and buttocks, namely the cushion moves away from the backrest, the rotating piece is driven to rotate, the first arm drives the lower end of the back cushion to move forward and upward to form a result that the inclination angle of the back cushion is reduced, so that the user can control the sofa to be switched between a sitting posture state and a lying posture state when sitting on the sofa, and in the whole process of switching the sofa from the sitting posture state to the lying posture, the back cushion does not move backward to influence articles at the back of the sofa, and meanwhile, the whole structure is simpler; it is worth to say that, because the rotating piece is adopted to link the cushion and the back cushion in the scheme, the lower end of the back cushion can not only move forwards, but also be lifted upwards, so that the back cushion can be laid flat more quickly and efficiently.

Preferably, when the lower end of the cushion is pivoted to the limit position in a direction away from the backrest, the extending direction of the force applied to the first arm by the cushion is located on the side of the first arm close to the second arm.

By adopting the technical scheme, when the back cushion is tilted to the limit position, an included angle between the back cushion and the first arm towards the backrest forms an obtuse angle; wherein, it is worth to explain that, in the process that the back cushion is turned from the initial position of the sitting posture to the final position of the lying posture, the included angle between the back cushion and the first arm towards the backrest is gradually reduced from more than 180 degrees to an obtuse angle; because the back cushion is supported by the fulcrum part and the end part of the first arm together, when the included angle between the back cushion and the first arm towards the backrest is reduced to an obtuse angle, the extending direction of the acting force of the back cushion acting on the end part of the first arm is positioned at one side of the first arm close to the second arm, and the force acting on the first arm has the function of preventing the first arm from being overturned towards the backrest to reset, namely, in the final state of the lying posture, the back cushion can depend on the self gravity and the angle formed by the first arm at the moment, so that the sofa is kept in the lying posture.

Preferably, a positioning part is fixed on the back cushion, and when the lower end of the back cushion is turned to the limit position in the direction away from the backrest, the positioning part abuts against the first arm and is located on the path of the first arm continuing to turn.

By adopting the technical scheme, the positioning piece can limit the overturning angle of the back cushion and prevent the back cushion from being overturned excessively, so that the sofa has better safety.

Preferably, the rotating member is installed in the base, and the cushion or the base is provided with an isolation portion, which is located outside the rotating member.

Through adopting above-mentioned technical scheme, can rely on the spacer part to play the isolation effect to the rotating member to the protection user prevents that user's hand from being pressed from both sides.

Preferably, the linkage member abuts against a side wall of the second arm adjacent to the first arm.

Through adopting above-mentioned technical scheme, improve the flexibility of being connected of linkage and second arm, reduce the restriction to the cushion direction of motion, no matter the cushion moves towards keeping away from the back direction along the level promptly, still upwards/downwards along the slope, and move towards keeping away from the back direction, all can realize driving the cushion and stabilize the upset.

Preferably, the base includes the pedestal and fixes the seat frame in the pedestal top, install the multiunit rolling member on the seat frame, the cushion downside is equipped with many tracks, every the track corresponds a set of rolling member, and every group rolling member sets up in the track that corresponds.

Through adopting above-mentioned technical scheme, the cushion can steadily slide, improves user's use and experiences.

Preferably, the linkage member is a roller and is rotatably connected to the seat cushion.

Through adopting above-mentioned technical scheme, reduce the cushion and promote the frictional force of second arm upset in-process, reduce the acting when user promotes the cushion promptly.

Preferably, an arc-shaped surface is arranged on one side of the fulcrum portion, which is close to the back cushion, and the back cushion abuts against the arc-shaped surface.

By adopting the technical scheme, the back cushion can be directly abutted against the arc-shaped surface, the structure is simple and practical, and the fulcrum part arranged on the arc-shaped surface can reduce the abrasion of the back cushion in the overturning process.

Preferably, a flexible isolation layer is connected between the upper end of the back cushion and the upper end of the backrest, and the flexible isolation layer is positioned on one side, away from the cushion, of the fulcrum part.

Through adopting above-mentioned technical scheme, user's hand can be kept apart to flexible isolation layer to prevent stretching into in the gap of fulcrum portion and cushion, thereby improve sofa safety in utilization.

Preferably, the base comprises a base body and a support leg fixed below the base body, and the vertical distance between the base body and the lower end of the support leg is greater than 20 cm.

By adopting the technical scheme, the distance between the seat body and the ground is ensured, so that the sweeping robot can move to the bottom of a sofa to clean.

To sum up, this application includes following at least one kind and sits the variable sofa of lying useful technological effect:

in the whole process of switching the sofa from the sitting posture to the lying posture, the back cushion does not move backwards to influence articles at the back of the sofa, and the operation in the process can be realized only by pushing the cushion forwards by the foot and hip strength of a user, so that the operation is simple and the whole structure is simpler;

when the back cushion is turned to the final state of the lying posture, the back cushion can make the sofa keep the lying posture by the self gravity and the reverse obtuse angle formed by the back cushion and the first arm at the moment, namely the back cushion can not automatically reset in the natural state;

the cushion slides smoothly with the base, and user experience feels good.

Drawings

Fig. 1 is a schematic external structure view of a variable sofa for sitting and lying in accordance with an embodiment of the present application;

FIG. 2 is a side view of the variable sofa structure of the present application, showing the structure in a sitting position;

fig. 3 is a side view of the sofa with changeable sitting and lying positions according to the embodiment of the present application, showing the structure in the lying position;

FIG. 4 is a schematic diagram of a portion of the features of FIG. 3;

fig. 5 is a partial structural schematic view of the variable sofa with sitting and lying in accordance with the embodiment of the present application.

Description of reference numerals: 1. a base; 11. a base body; 12. a support leg; 13. a seat frame; 14. a fixed block; 15. a rolling member; 16. a central rotating shaft; 2. a backrest; 21. a fulcrum section; 3. a cushion; 31. a connecting portion; 311. a track; 32. a seating part; 33. a linkage member; 34. abutting the sheet; 4. back cushion; 41. a positioning member; 42. positioning plates; 5. a rotating member; 51. a first arm; 52. a second arm; 6. a flexible barrier layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a variable sofa capable of sitting and lying.

Example 1:

referring to fig. 1 and 2, a variable sofa for sitting and lying comprises a base 1 and a backrest 2, wherein a seat cushion 3 is arranged on the base 1 in a sliding manner along the horizontal direction, a back cushion 4 is arranged on one side of the backrest 2 close to the base 1, a fulcrum part 21 is further arranged at the top of the backrest 2, the fulcrum part 21 is horizontally arranged in a cylindrical shape, and the side wall of the back cushion 4 abuts against the upper surface of the fulcrum part 21; the base 1 is rotatably connected with a rotating part 5, and the lower end of the back cushion 4 and one end of the cushion 3 close to the backrest 2 are both connected with the rotating part 5;

when a user on the cushion 3 pushes the cushion 3 to move forward, namely to slide away from the backrest 2 by means of the force of the buttocks and feet, the lower end of the back cushion 4 can move forward and upward under the drive of the rotating piece 5, the inclination angle of the whole back cushion 4 is gradually reduced, and the sofa is changed into a lying posture from a sitting posture; the purpose of the upward movement of the lower end of the backrest cushion 4 is to make the backrest cushion 4 achieve a reduction and leveling of the tilt angle faster and more efficiently, i.e. if the lower end of the backrest cushion 4 is not only moved forward but also lifted upward at the same time, the tilt angle of the entire backrest cushion 4 can be reduced faster and more efficiently if the lower end of the backrest cushion 4 is moved forward the same distance.

Referring to fig. 3 and 4, the base 1 includes a base body 11, four support legs 12 fixed below the base body 11, and a seat frame 13 fixed above the base body 11, wherein the vertical distance between the lower ends of the base body 11 and the support legs 12 is greater than 20cm, which ensures the distance between the base body 11 and the ground, so that the sweeping robot can move to the bottom of a sofa for cleaning; the seat cushion 3 includes a connecting portion 31 and a seating portion 32 fixed above the connecting portion 31, the connecting portion 31 is a rectangular metal frame, the seating portion 32 has a structure in which a user directly sits and has elasticity, and the connecting portion 31 is slidably connected to the seat frame 13.

Referring to fig. 4 and 5, a groove-shaped rail 311 is recessed horizontally on each of two sides of the connecting portion 31, two fixing blocks 14 are fixed on two sides of the seat frame 13, each fixing block 14 is provided with a set of rolling members 15, the number of the rolling members 15 in each set of rolling members 15 is one, and the rolling members 15 are transversely embedded into the rail 311, that is, the whole connecting portion 31 is sandwiched between the rolling members 15 on the left and right sides; the rolling member 15 not only reduces the friction force of the horizontal movement of the connecting portion 31, but also provides a supporting force to the connecting portion 31.

Referring to fig. 3 and 4, a central rotating shaft 16 is provided on the seat frame 13, two rotating members 5 are provided and are respectively connected to both ends of the central rotating shaft 16, and the rotating members 5 rotate around the central rotating shaft 16; the central rotating shaft 16 and the rotating member 5 are both located inside the base 1, and the seat cushion 3 or the base 1 is provided with a partition, in this embodiment, the partition is optionally provided on the seat cushion 3, the partition is disposed below the sitting portion 32 and at the periphery of the connecting portion 31, and the partition covers the outer side of the rotating member 5, so as to reduce the risk that the user is pinched.

The rotating member 5 is substantially V-shaped and comprises a first arm 51 and a second arm 52, the included angle between the first arm 51 and the second arm 52 is acute, the first arm 51 is longer than the second arm 52, and the first arm 51 is closer to the backrest 2 than the second arm 52; a positioning piece 41 is fixed at the lower end of the back cushion 4, a positioning piece 42 is fixed at one side of the positioning piece 41, and one end of the first arm 51 far away from the central rotating shaft 16 is rotatably connected to the positioning piece 42; the positioning member 41 is located on the rotation path of the first arm 51, so that when the first arm 51 rotates and drives the backrest cushion 4 to lie, the positioning member 41 can limit the first arm 51 to continue rotating, thereby preventing the backrest cushion 4 from turning excessively;

a linkage piece 33 is arranged on the connecting part 31 of the seat cushion 3, and the linkage piece 33 is a roller; the link 33 can be selected to abut against the side wall of the end of the second arm 52 far from the central rotating shaft 16 close to the first arm 51, or an abutting piece 34 is fixed to the end of the second arm 52 far from the central rotating shaft 16, and the abutting piece 34 abuts against the side of the link 33 far from the backrest 2, which can be selected as the latter in this embodiment; when the seat cushion 3 moves away from the backrest 2, the link member 33 pushes the second arm 52 to rotate away from the backrest 2, and the first arm 51 rotates with the second arm 52 and moves the lower end of the cushion 4 upward and toward the seat cushion 3.

It is worth to be noted that, in the process of turning the back cushion 4 from the initial position of the sitting posture to the final position of the lying posture, the included angle between the back cushion 4 and the first arm 51 towards the backrest 2 is gradually reduced from more than 180 degrees to an obtuse angle; since the cushion 4 is supported by the fulcrum portion 21 and the end portion of the first arm 51, when the angle between the cushion 4 and the first arm 51 toward the backrest 2 is reduced to an obtuse angle, the extending direction of the force applied to the end portion of the first arm 51 by the cushion 4 is located at the side of the first arm 51 close to the second arm 52, and the force applied to the first arm 51 has the function of preventing the first arm 51 from being turned over and returned toward the backrest 2, that is, in the final state of the lying posture, the cushion 4 can make the sofa keep the lying posture by the self-gravity and the angle formed with the first arm 51 at this time.

A flexible isolation layer 6 is connected between the upper end of the back cushion 4 and the upper end of the backrest 2, and the flexible isolation layer 6 is positioned at one side of the fulcrum part 21 far away from the cushion 3.

The implementation principle of the embodiment 1 is as follows: when the sofa needs to be changed into a lying sofa, a user only needs to push the cushion 3 forwards by means of the force of feet and buttocks, namely, the cushion moves towards the direction far away from the backrest 2, the rotating piece 5 is driven to rotate, the first arm 51 drives the lower end of the back cushion 4 to move forwards and upwards to form a result that the inclination angle of the back cushion 4 is reduced, and therefore the user can control the sofa to be switched between a sitting posture and a lying posture when sitting on the sofa;

in the whole process of switching the sofa from the sitting posture to the lying posture, the back cushion 4 does not move backwards to influence the objects at the back of the sofa;

the whole structure in the scheme is simple;

because the rotating piece 5 is adopted to link the cushion 3 and the back cushion 4, the lower end of the back cushion 4 can not only move forwards, but also be lifted upwards, so that the back cushion 4 can be laid flat more quickly and efficiently;

when the back cushion 4 is turned to the final lying position, the back cushion 4 can be kept in the lying position by the self-gravity and the reverse obtuse angle formed by the back cushion 4 and the first arm 51, that is, the back cushion 4 can not be automatically reset in the natural state.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A sofa with changeable sitting and lying comprises a base (1) and a backrest (2), and is characterized in that: the seat cushion (3) is arranged on the base (1) in a sliding mode, a back cushion (4) is arranged on one side, close to the base (1), of the backrest (2), a fulcrum part (21) is further arranged on the backrest (2), and the back cushion (4) abuts against the upper surface of the fulcrum part (21); the base (1) is rotatably connected with a rotating part (5), the rotating part (5) comprises a first arm (51) and a second arm (52), one end, far away from a rotating shaft of the rotating part (5), of the first arm (51) is rotatably connected to the lower end of the back cushion (4), and a linkage part (33) is arranged on the seat cushion (3); when the cushion (3) moves towards the direction far away from the backrest (2), the linkage piece (33) pushes or pulls the second arm (52) to rotate towards the direction far away from the backrest (2), and the first arm (51) rotates along with the second arm (52) and drives the lower end of the back cushion (4) to move upwards and towards the moving direction of the cushion (3).

2. The variable-lying sofa according to claim 1, wherein: when the lower end of the cushion (4) is turned to the limit position in the direction away from the backrest (2), the extension direction of the acting force applied to the first arm (51) by the cushion (4) is positioned at the side of the first arm (51) close to the second arm (52).

3. The variable-lying sofa according to claim 2, wherein: a positioning part (41) is fixed on the back cushion (4), and when the lower end of the back cushion (4) turns to the limit position towards the direction far away from the backrest (2), the positioning part (41) is abutted to the first arm (51) and is positioned on the path of the first arm (51) continuing to turn.

4. The variable-lying sofa according to claim 1, wherein: the rotating part (5) is installed in the base (1), an isolation part is arranged on the cushion (3) or the base (1), and the isolation part is located on the outer side of the rotating part (5).

5. The variable-lying sofa according to claim 1, wherein: the link (33) abuts against a side wall of the second arm (52) close to the first arm (51).

6. The variable-lying sofa according to claim 5, wherein: base (1) include pedestal (11) and fix seat frame (13) in pedestal (11) top, install multiunit rolling member (15) on seat frame (13), cushion (3) downside is equipped with many tracks (311), every track (311) correspond a set of rolling member (15), and every group rolling member (15) set up in track (311) that correspond.

7. The sofa of claim 5, wherein the sofa comprises: the linkage piece (33) is a roller and is rotatably connected to the seat cushion (3).

8. The variable-lying sofa according to claim 1, wherein: an arc-shaped surface is arranged on one side, close to the back cushion (4), of the fulcrum part (21), and the back cushion (4) is abutted against the arc-shaped surface.

9. The variable-lying sofa according to claim 8, wherein: be connected with flexible isolation layer (6) between cushion (4) upper end and back (2) upper end, flexible isolation layer (6) are located fulcrum portion (21) and keep away from cushion (3) one side.

10. The variable-lying sofa according to claim 1, wherein: the base (1) comprises a base body (11) and supporting legs (12) fixed below the base body (11), and the vertical distance between the base body (11) and the lower ends of the supporting legs (12) is larger than 20 cm.