Telescopic sofa

Abstract

The utility model relates to the field of furniture, and particularly discloses a telescopic sofa which comprises a cushion, handrails connected to the two sides of the cushion and a backrest arranged on the back of the cushion, a space allowing a part of the cushion to be placed therein is formed below the backrest, a base is arranged below the cushion, a sliding mechanism allowing the cushion to move is arranged in the base, and the sliding mechanism is connected with the backrest. The sliding mechanism comprises a first rotating shaft, a synchronous gear fixedly connected with the first rotating shaft, a synchronous belt meshed with the synchronous gear and a gear motor used for driving the synchronous gear to rotate, one end of the first rotating shaft is fixedly connected with an output shaft of the gear motor, and the other end of the first rotating shaft is rotationally connected with the inner wall of the base; the mounting seat is fixedly connected with the synchronous belt, and a second rotating shaft penetrates through the backrest. The telescopic sofa disclosed by the utility model has the effect of conveniently adjusting the telescopic length.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of furniture, in particular to a telescopic sofa. BACKGROUND

[0002] In modern home design, sofas as an important piece of furniture play an important role in meeting the diverse needs of family members. The traditional sofa design is relatively fixed, and the size and shape are difficult to adapt to the needs of all people, so the telescopic sofa design emerges as the times require, which can be adjusted accordingly according to the change of use.

[0003] In the Chinese patent with publication number CN222264840U, a telescopic sofa is disclosed, which includes a backrest frame, a receiving cavity with an opening provided on the backrest frame, a lengthening piece movably arranged in the receiving cavity, a sliding frame with an opening side movably arranged on the backrest frame, a first linkage assembly provided between the lengthening piece and the sliding frame, the first linkage assembly being used to pull one end of the lengthening piece when the sliding frame slides to make the lengthening piece pass out of the opening of the receiving cavity, and a second linkage assembly provided between the lengthening piece and the backrest frame, the second linkage assembly being used to limit the lengthening piece from gradually turning to a horizontal state around the hinge between the sliding frame and the lengthening piece when the sliding frame drives the lengthening piece to pass out of the receiving cavity.

[0004] The telescopic sofa described above still has some problems: it can only be adjusted in two gears, i.e., one fixed length before extension and one fixed length after extension, and it cannot adjust the length according to the user's posture on the sofa. UTILITY MODEL CONTENT

[0005] In order to facilitate the adjustment of the telescopic length, the present application provides a telescopic sofa.

[0006] The telescopic sofa provided by the present application adopts the following technical scheme:

[0007] A telescopic sofa includes a seat cushion, armrests connected to both sides of the seat cushion, and a backrest provided on the back of the seat cushion. A space is provided below the backrest for part of the seat cushion to be placed in. A base is provided below the seat cushion. A sliding mechanism is provided in the base for the seat cushion to move. The sliding mechanism includes a first rotating shaft, a synchronous gear fixedly connected to the first rotating shaft, a synchronous belt engaged with the synchronous gear, and a reduction motor for driving the synchronous gear to rotate. One end of the first rotating shaft is fixedly connected to the output shaft of the reduction motor, and the other end is rotatably connected to the inner wall of the base. An installation seat is connected to the bottom of the seat cushion. The installation seat is fixedly connected to the synchronous belt. A second rotating shaft is provided in the backrest.

[0008] By adopting the above technical scheme, when the length of the sofa needs to be extended, the reduction motor is started to drive the cushion to move outward, the cushion placed in the accommodating cavity is exposed outside, thereby realizing the change of the length of the sofa; meanwhile, through the cooperation of the synchronous belt and the synchronous gear, the noise generated in the running process is greatly reduced, the reduction motor can provide a large torque, and the cushion can be smoothly moved. The second rotating shaft enables the backrest to rotate around the second rotating shaft, so that the backrest can be placed flat on one side of the sofa, thereby further expanding the size of the sofa, and facilitating the use of users with high height.

[0009] Optionally, the mounting seat is connected with a limiting block near one side of the base, and the sidewall of the base is provided with a stroke groove for sliding of the limiting block.

[0010] By adopting the above technical scheme, the stroke groove cooperates with the limiting block to limit the movement distance of the mounting seat, so that the mounting seat and the synchronous gear do not come into contact during the extension process, thereby preventing the mounting seat and the synchronous gear from being damaged due to collision, and ensuring the stability and durability of the product in use.

[0011] Optionally, the inner wall of the base is connected with a support plate, and the support plate is arranged in the synchronous belt.

[0012] By adopting the above technical scheme, the support plate plays a supporting role, can support the mounting seat during use to disperse the pressure, prevent the synchronous belt from being broken due to excessive pressure, and ensure the stability during sliding.

[0013] Optionally, the backrest is connected with a positioning block near one side of the armrest, and the top of the armrest is provided with a first positioning groove for insertion of the positioning block.

[0014] By adopting the above technical scheme, when the backrest is normally placed on the sofa, the positioning block cooperates with the positioning groove to enable the backrest to be stably clamped, and when subjected to a large impact, the backrest can also be stably clamped on the upper side of the cushion, and has good stability.

[0015] Optionally, the backrest is provided with a waist-shaped hole for movement of the second rotating shaft, and the waist-shaped hole is vertically arranged.

[0016] By adopting the above technical scheme, a vertically arranged waist-shaped hole is arranged, so that the waist-shaped hole can provide a vertical movement track for the second rotating shaft, thereby enabling the backrest to be adjusted up and down within a certain range, and when the backrest needs to be placed flat, the backrest is lifted upward and then rotated around the second rotating shaft, so that the backrest can be placed flat.

[0017] Optionally, the cushion is a limiting portion near the backrest, the lower side of the backrest is an abutting portion, and the back of the armrest is provided with a second positioning groove for insertion of the positioning block.

[0018] By adopting the technical scheme, when the backrest is laid flat, the backrest is pushed to the side of the cushion, at this time, the positioning block is inserted into the second positioning groove to play a positioning role, and the abutting portion will abut against the limiting portion, thereby preventing the backrest from continuing to rotate around the second rotating shaft, and ensuring the stability of the backrest after being laid flat.

[0019] Optionally, a receiving cavity is formed in the back of the backrest, and a foot prop is rotationally connected in the receiving cavity.

[0020] By adopting the technical scheme, when the backrest is laid flat, the foot prop in the receiving cavity is taken out and supported on the floor, the foot prop can well support the backrest, so that the backrest can bear greater pressure after being laid flat, and the foot prop can share the pressure, thereby preventing the abutting portion from being broken when abutting against the limiting portion, and ensuring the stability of the product during use.

[0021] Optionally, the cushion is provided with a roller near one end close to the ground.

[0022] By adopting the technical scheme, the roller can realize flexible movement of the cushion, reduce the dragging resistance, thereby reducing the operating load of the sliding mechanism, improving the service life of the internal parts of the sliding mechanism, and ensuring the durability.

[0023] In summary, the present application has the following beneficial effects:

[0024] 1. By arranging the sliding mechanism, the length of the sofa can be lengthened according to the needs of the user, so that the user can use the sofa more comfortably, and the comfort is improved.

[0025] 2. By arranging the second rotating shaft and the foot prop, the backrest can rotate around the rotating shaft, and the backrest can be laid flat in cooperation with the foot prop, thereby expanding the use area of the sofa, so that users with higher height can also lie on the sofa. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of the extendable sofa of the embodiment of the present application;

[0027] Figure 2 is a structure schematic view of the extendable sofa of the embodiment of the present application, with the cushion and one side armrest removed;

[0028] Figure 3 is a sectional view of the extendable sofa of the embodiment of the present application.

[0029] Figure 4 is a back view of the extendable sofa of the embodiment of the present application;

[0030] Figure 5 is a structure schematic view of the extendable sofa of the embodiment of the present application, with the backrest laid flat.

[0031] Explanation of reference signs: 1, cushion; 11, limiting part; 12, roller; 2, armrest; 21, first positioning groove; 22, second positioning groove; 3, backrest; 31, second rotating shaft; 32, waist-shaped hole; 33, positioning block; 34, abutting part; 35, storage cavity; 36, foot prop; 4, base; 41, stroke groove; 42, supporting plate; 5, sliding mechanism; 51, first rotating shaft; 52, synchronous gear; 53, synchronous belt; 54, speed reduction motor; 55, mounting seat; 551, limiting block. DETAILED DESCRIPTION

[0032] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The application is further described in detail.

[0033] The application discloses a telescopic sofa. Referring to Figure 1 , Figure 2 and Figure 3 , the telescopic sofa comprises a base 4, armrests 2 fixedly connected to both sides of the base 4, and a backrest 3 arranged at the back of the base 4, and a cushion 1 is arranged above the base 4. The base 4 is of a hollow structure, and a sliding mechanism 5 for driving the cushion 1 to move is arranged in the base 4. When the length of the sofa needs to be changed, the sliding mechanism 5 is started to drive the cushion 1 to move above the base 4, so that the length of the sofa is adjusted.

[0034] Referring to Figure 2 , Figure 3 , the sliding mechanism 5 comprises a first rotating shaft 51, synchronous gears 52 fixedly connected to the first rotating shaft 51, a synchronous belt 53 engaged with the synchronous gears 52, and a speed reduction motor 54 for driving the synchronous gears 52 to rotate. The synchronous gears 52 are arranged at both ends of the synchronous belt 53, respectively. One end of the first rotating shaft 51 is fixedly connected to the output shaft of the speed reduction motor 54, and the other end is rotatably connected to the inner wall of the base 4. The mounting seat 55 is fixedly connected to the synchronous belt 53, and the top of the mounting seat 55 is fixedly connected to the bottom wall of the cushion 1. When the sliding mechanism 5 operates, the speed reduction motor 54 drives the first rotating shaft 51 to rotate, thereby driving the synchronous gears 52 to rotate. The synchronous belt 53 is engaged with the synchronous gears 52 to drive the mounting seat 55 to move, thereby realizing the movement of the cushion 1. Since the speed reduction motor 54 can provide a large torque and has a low rotating speed, the use of the speed reduction motor 54 as a driving part can realize the stable operation of the cushion 1. Meanwhile, the engagement of the synchronous belt 53 with the synchronous gears 52 can significantly reduce the noise generated when the sliding mechanism 5 operates.

[0035] Referring to Figure 2 , Figure 3 , the supporting plate 42 is fixedly connected to the inner wall of the base 4 and penetrates the synchronous belt 53 to support the mounting seat 55. The supporting plate 42 can effectively share the pressure, thereby preventing the synchronous belt 53 from being broken due to the downward pressure of the mounting seat 55 when the synchronous belt 53 operates, and ensuring the stability during operation.

[0036] Reference Figure 2 , Figure 3 The mounting base 55 is connected to a limiting block 551 near the base 4. The side wall of the base 4 has a travel groove 41 for one end of the limiting block 551 to slide. One end of the limiting block 551 is pressed into the travel groove 41. During operation, the travel groove 41 restricts the movement path of the cushion 1, so that the mounting base 55 and the synchronous gear 52 will not come into contact, thereby preventing damage to parts caused by contact between the mounting base 55 and the synchronous gear 52, and ensuring the stability and durability of the product.

[0037] Reference Figure 3 The seat cushion 1 has a roller 12 at the end closest to the ground. The roller 12 can effectively reduce drag resistance, making it easier for the sliding mechanism to move the seat cushion 1. In addition, the roller 12 can achieve rolling friction to prevent the seat cushion 1 from scratching the floor due to dragging.

[0038] Reference Figure 4 , Figure 5 and Figure 3 The backrest 3 has a vertically oriented waist-shaped hole 32, through which a second rotating shaft 31 passes. Both ends of the rotating shaft are fixedly connected to the armrests 2 on both sides. A positioning block 33 is connected to the right side of the backrest 3 near the armrest 2. A first positioning groove 21 for the positioning block 33 to be inserted is provided at the top of the armrest 2. A contact part 34 is located on the lower side of the backrest 3, and a limiting part 11 is located on the side of the seat cushion 1 near the backrest 3. The vertically oriented waist-shaped hole 32 allows the backrest 3 to be pulled upwards, causing the positioning block 33 to disengage from the first positioning groove 21. The backrest 3 can then rotate around the second rotating shaft 31 to allow it to lie flat. Pushing the backrest 3 towards the side of the seat cushion 1 along the waist-shaped hole 32 causes the contact part 34 to contact the limiting part 11, thus preventing the backrest 3 from continuing to rotate around the second rotating shaft 31.

[0039] Reference Figure 4 , Figure 5 and Figure 4 The back of the armrest 2 has a second positioning groove 22 for the positioning block 33 to be inserted. The second positioning groove 22 serves a positioning function. When the positioning block 33 is inserted into the second positioning groove 22, it indicates that the backrest 3 has been adjusted to the predetermined flat position.

[0040] Reference Figure 5 , ​The backrest 3 is provided with a receiving cavity 35 in the back, and a foot prop 36 is rotatably connected in the receiving cavity 35. When the backrest 3 is laid flat, the foot prop 36 in the receiving cavity 35 is rotated and taken out to support on the floor, the foot prop 36 can play a good supporting role on the backrest 3, so that the backrest 3 can bear larger pressure after being laid flat, and the foot prop 36 can share the pressure, thereby preventing the abutting portion 34 from being broken when abutting against the limiting portion 11. When the backrest 3 is not laid flat for use, the foot prop 36 can be placed in the receiving cavity 35, and better aesthetic appearance is obtained.

[0041] The implementation principle of the embodiment of the application is as follows: when the length of the sofa needs to be changed, the reduction motor 54 is started to drive the first rotating shaft 51 to rotate, and the synchronous gear 52 drives the synchronous belt 53 to rotate, so that the cushion 1 moves, at this time, the length can be adjusted according to the user's posture, so that the user can lie on the sofa in the most comfortable posture; when the user is tall or needs to lie on the sofa completely, the backrest 3 is lifted upward and rotated around the second rotating shaft 31 to the horizontal position, and then the foot prop 36 is taken out to support on the floor, at this time, the sofa is further enlarged in size.

[0042] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A sofa with telescopic mechanism, comprising a seat cushion (1), armrests (2) connected to both sides of the seat cushion (1), and a backrest (3) arranged at the back of the seat cushion (1), characterized in that: The backrest (3) is provided with a space for part of the cushion (1) to be placed, the bottom of the cushion (1) is provided with a base (4), the base (4) is provided with a sliding mechanism (5) for the cushion (1) to move, the sliding mechanism (5) comprises a first rotating shaft (51), a synchronous gear (52) fixedly connected with the first rotating shaft (51), a synchronous belt (53) engaged with the synchronous gear (52), and a speed reducer motor (54) for driving the synchronous gear (52) to rotate, one end of the first rotating shaft (51) is fixedly connected with the output shaft of the speed reducer motor (54), the other end is rotatably connected with the inner wall of the base (4), the bottom of the cushion (1) is connected with a mounting seat (55), the mounting seat (55) is fixedly connected with the synchronous belt (53), and the backrest (3) is provided with a second rotating shaft (31).

2. The expandable sofa according to claim 1, characterized in that: The mounting seat (55) is provided with a limiting block (551) close to one side of the base (4), and the sidewall of the base (4) is provided with a stroke groove (41) for the limiting block (551) to slide.

3. The expandable sofa according to claim 1, wherein: The inner wall of the base (4) is connected with a supporting plate (42), and the supporting plate (42) is arranged in the synchronous belt (53).

4. The expandable sofa of claim 1, wherein: The backrest (3) is connected with a positioning block (33) close to one side of the armrest (2), and the top of the armrest (2) is provided with a first positioning groove (21) for the positioning block (33) to insert.

5. The expandable sofa according to claim 1, wherein: The backrest (3) is provided with a waist-shaped hole (32) for the second rotating shaft (31) to move, and the waist-shaped hole (32) is vertically arranged.

6. The expandable sofa of claim 1, wherein: The side of the cushion (1) close to the backrest (3) is a limiting part (11), the lower side of the backrest (3) is an abutting part (34), and the back of the armrest (2) is provided with a second positioning groove (22) for the positioning block (33) to insert.

7. The expandable sofa of claim 1, wherein: The back of the backrest (3) is provided with a storage cavity (35), and the storage cavity (35) is rotatably connected with a foot support (36).

8. The expandable sofa of claim 1, wherein: The end of the cushion (1) close to the ground is provided with a roller (12).

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