CN215993376U

CN215993376U - Functional sofa stretching device with good supporting performance

Info

Publication number: CN215993376U
Application number: CN202121110427.9U
Authority: CN
Inventors: 冯元峰; 吴林林; 崔亮; 王志禹
Original assignee: Zhejiang Mimeng Home Technology Co ltd
Current assignee: Zhejiang Mimeng Home Technology Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-03-11
Anticipated expiration: 2031-05-21

Abstract

The application relates to the field of functional sofas, in particular to a functional sofa stretching device with good supporting performance, which comprises a base, a sitting part, a backrest part, a leg supporting part, a driving part, a linkage assembly and a supporting assembly, wherein the sitting part is arranged on the base; the linkage assembly is used for driving the leg supporting part to rotate relative to the sitting part along with the driving of the driving part so as to form a sitting posture, a TV posture and a lying posture; the supporting component is connected with the base and the linkage component, the supporting component is a link mechanism, a limiting plate is arranged on one connecting rod of the supporting component, and a limiting structure used for supporting the supporting component in sitting posture, TV posture and lying posture is arranged between the limiting plate and the base. When the sofa stretching device is in any one of sitting posture, TV posture and lying posture, one end of the sitting part close to the leg supporting part can be supported by the limiting structure after force transmission through the linkage assembly and the supporting assembly, so that the problems that the supporting force of one end of the sitting part close to the leg supporting part is insufficient and the sofa is easy to sink are solved. The stability of the sofa stretching device is improved.

Description

Functional sofa stretching device with good supporting performance

Technical Field

The application relates to the field of functional sofas, in particular to a functional sofa stretching device with good supporting performance.

Background

The functional sofa with adjustable posture is widely applied at present. The existing handrail floor connecting rod type functional iron frame has the problems that the supporting force of one end of the sitting part close to the pedal part is insufficient and the sitting part is easy to sink due to the fact that the connecting point of the whole sitting part and the base is close to the backrest part, particularly after the pedal part is extended. I.e. insufficient support for the footrest.

In view of the above-mentioned related art, the applicant has considered that there is a drawback that the seating portion is not sufficiently supported at the end close to the footrest portion and is liable to sink.

SUMMERY OF THE UTILITY MODEL

In order to improve the stability of the stretching device,

the application provides a good function sofa stretching device of support nature adopts following technical scheme:

a functional sofa stretching device with good supporting performance comprises a base, a sitting part, a backrest part, a leg supporting part, a driving part, a linkage assembly and a supporting assembly, wherein the driving part is used for providing driving force of a linear pair; the linkage assembly is used for driving the leg supporting part to rotate relative to the sitting part along with the driving of the driving part so as to form a sitting posture, a TV posture and a lying posture; the supporting component is connected with the base and the linkage component, the supporting component is a link mechanism, a limiting plate is arranged on one connecting rod of the supporting component, and a limiting structure used for supporting the supporting component in sitting posture, TV posture and lying posture is arranged between the limiting plate and the base.

By adopting the technical scheme, when the sofa stretching device is in any one of the sitting posture, the TV posture and the lying posture, one end of the sitting part close to the leg supporting part can be supported by the limiting structure after force transmission through the linkage assembly and the supporting assembly, so that the problems of insufficient supporting force and easy sinking of one end of the sitting part close to the leg supporting part are solved. The stability of the sofa stretching device is improved.

Optionally, the limiting structure comprises a limiting groove formed in the limiting plate and a limiting nail fixedly installed on the base and slidably connected in the limiting groove, and the limiting nail and the limiting groove are abutted to form a limiting support.

Through adopting above-mentioned technical scheme, through the holding power of spacing nail to spacing groove cell wall to make the limiting plate receive the holding power, this holding power passes through linkage assembly biography power back, transmits the portion of taking. The one end of the sitting part close to the leg supporting part is supported, thereby improving the problems that the one end of the sitting part close to the leg supporting part has insufficient supporting force and is easy to sink.

Optionally, when the leg supporting part is in a sitting posture, the limiting nail is abutted to the upper end of the limiting groove.

Through adopting above-mentioned technical scheme, provide ascending holding power to spacing groove upper end cell wall through the spacing nail to make the limiting plate receive the holding power, this holding power passes through linkage assembly biography power back, transmits the portion of taking. The one end of the sitting part close to the leg supporting part is supported, thereby improving the problems that the one end of the sitting part close to the leg supporting part has insufficient supporting force and is easy to sink.

Optionally, when the leg support portion is in the TV posture, the limit pin abuts against the upper end of the limit groove.

Optionally, the limiting groove is arc-shaped and provided with two ends; when the stretching device is in a lying posture, the limiting nail is abutted against the lower end of the limiting groove.

By adopting the technical scheme, the limiting plate has downward limiting force on the limiting groove through the limiting nail, so that the limiting plate cannot excessively rotate along with the conversion of the sofa stretching device into lying posture.

Optionally, the limiting structure further comprises a support nail fixedly mounted on the limiting plate; when the stretching device is in the lying position, the supporting pin is abutted against the supporting component.

By adopting the technical scheme, when the sofa stretching device changes the posture, the supporting nails and other workpieces synchronously arrive to provide supporting force for the supporting component, and after the force is transferred by the linkage component, the supporting force is provided for the sitting part, so that one end of the sitting part, which is close to the leg supporting part, does not sink any more.

Optionally, the supporting force of the supporting component by the supporting nail is upward, and the abutting force of the groove wall of the limiting groove to the limiting nail is downward.

Through adopting above-mentioned technical scheme, when sofa stretching device was in the appearance state of lying, support nail and spacing nail provided pulling force, holding power simultaneously, and riveted with other work pieces, formed complicated stress state force balance, effectively reduced the seat and near leg supporting part one end and lean forward and sink, strengthened the steadiness.

Optionally, the supporting component comprises a first connecting rod connected to the base in a rotating mode, a second connecting rod connected to the first connecting rod in a rotating mode, a third connecting rod connected to the second connecting rod in a rotating mode, and a connecting plate, the limiting plate is fixedly connected to the connecting plate, the connecting plate is connected to the base and the third connecting rod in a rotating mode, and the third connecting rod is connected to the linkage component in a rotating mode.

Through adopting above-mentioned technical scheme, when sofa stretching device gesture changed, the portion of taking moved, drives the third connecting rod and rotates to make the spacing nail move in the spacing inslot.

Optionally, when the stretching device is in the lying position, the support pin abuts against the lower end face of the second connecting rod.

By adopting the technical scheme, when the sofa stretching device changes the posture, the supporting nails and other workpieces synchronously reach to provide supporting force for the second connecting rod, and after the force is transferred by the linkage assembly, the supporting force is provided for the sitting part, so that one end of the sitting part, which is close to the leg supporting part, does not sink any more.

Optionally, the linkage assembly includes a fourth connecting rod rotatably connected to the seating portion, a fifth connecting rod rotatably connected to the fourth connecting rod, a sixth connecting rod rotatably connected to the fifth connecting rod, a seventh connecting rod rotatably connected to the sixth connecting rod, and an eighth connecting rod rotatably connected to the seventh connecting rod, the eighth connecting rod is rotatably connected to the seating portion, the driving portion is connected to the fourth connecting rod, and the third connecting rod is rotatably connected to the seventh connecting rod.

Through adopting above-mentioned technical scheme, the fourth connecting rod is driven by the drive division and is moved forward, after fifth connecting rod, sixth connecting rod, seventh connecting rod and eighth connecting rod pass power, drives the portion of taking and translate forward. Thereby the sofa stretching device can be smoothly changed in each posture.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the sofa stretching device is in any one of sitting posture, TV posture and lying posture, the sofa stretching device can be well supported, so that the settlement is reduced, and the stability is enhanced;

2. the limiting structure is simple in structure and easy to realize;

3. the support nail and the limit nail simultaneously provide tension and support force, and are riveted with other workpieces to form force balance in a complex stress state.

Drawings

FIG. 1 is a schematic structural diagram of the embodiment in a sitting posture.

FIG. 2 is a schematic diagram of the embodiment in the TV position.

Fig. 3 is a schematic structural view of the lying position of the embodiment.

Fig. 4 is a schematic structural diagram of a limiting plate and a connecting plate in the embodiment.

Fig. 5 is a schematic view of the embodiment in a lying position with the positioning structure.

FIG. 6 is a schematic diagram of the embodiment in a sitting, TV position with a positioning structure.

Description of reference numerals: 1. a base; 2. a seating part; 3. a backrest part; 4. a leg support; 5. a drive section; 6. mounting a bottom plate; 7. mounting a rod; 8. a fourth link; 9. a fifth link; 10. a sixth link; 11. a seventh connecting rod; 12. an eighth link; 13. a twelfth link; 14. a thirteenth link; 15. a fourteenth link; 16. a leg support base; 17. a drive rod; 18. a drive cylinder; 19. a connecting seat; 20. a ninth link; 21. a tenth link; 22. an eleventh link; 23. a spring connecting block; 24. a limiting block; 25. a support assembly; 26. a first link; 27. a second link; 28. a third link; 29. a connecting plate; 30. a limiting plate; 31. a limiting groove; 32. a limit pin; 33. and supporting the nail.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses function sofa stretching device that support nature is good. Referring to fig. 1, a functional sofa stretching apparatus having a good supporting property includes a base 1, a seat 2, a backrest 3, a leg support 4, and a driving unit 5. The backrest part 3 is pivotally connected to one end of the base 1 and the seat part 2, and the leg support part 4 is pivotally connected to one end of the seat part 2 remote from the backrest part 3. The sitting portion 2 is connected to the base 1 and can move in translation relative to the base 1.

The seat section 2, the leg support section 4, and the backrest section 3 are movable by the driving section 5, so that the sofa stretching apparatus is changed between three states. The three states are sitting, TV and lying respectively. Referring to fig. 1, the leg support 4 is in a folded state and the backrest 3 is almost vertical to the seat 2 when the sofa stretching apparatus is in a sitting posture. Referring to fig. 2, when the sofa stretching apparatus is in the TV posture state, the leg supporting part 4 is in the unfolded state, and the backrest part 3 is almost vertical to the seat part 2. Referring to fig. 3, when the sofa stretching apparatus is in the lying position, the leg supporting part 4 is in the unfolded state, and the backrest part 3 is tilted backward with respect to the seat part 2.

Referring to fig. 1, specifically, the base 1 includes two mounting base plates 6 and a mounting rod 7 for fixedly connecting the two mounting base plates 6 together. Two ends of the mounting rod 7 are respectively fixedly connected to the mounting bottom plate 6. The mounting base plate 6 is used for being fixedly connected with a handrail wooden frame of the sofa, so that the base 1 is fixed with the sofa wooden frame.

Referring to fig. 1 and 2, the seating part 2 is connected to the base 1 through a linkage assembly. The linkage assembly includes a fourth link 8 rotatably connected to the seating part 2, a fifth link 9 rotatably connected to the fourth link 8, a sixth link 10 rotatably connected to the fifth link 9, a seventh link 11 rotatably connected to the sixth link 10, and an eighth link 12 rotatably connected to the seventh link 11, and the eighth link 12 is rotatably connected to the seating part 2.

Referring to fig. 1 and 2, the linkage assembly also serves to pivotally connect the leg support 4 to the seat 2. The linkage assembly further includes a twelfth link 13 rotatably connected to the seating portion 2, a thirteenth link 14 rotatably connected to the fourth link 8 and the twelfth link 13, and a fourteenth link 15 rotatably connected to the twelfth link 13, each of the thirteenth link 14 and the fourteenth link 15 being rotatably connected to the leg supporting portion 4.

Referring to fig. 2, the driving portion 5 is connected to the fourth link 8, and drives the fourth link 8 to rotate so as to drive the four-link mechanism consisting of the twelfth link 13, the thirteenth link 14, the fourteenth link 15 and the leg supporting portion 4 to move, thereby folding and unfolding the leg supporting portion 4.

In order to provide a sofa extension device with better leg support, a leg support base 16 is pivotally connected to the thirteenth link 14, and the leg support base 16 is pivotally connected to the fourteenth link 15. When the leg supporting part 4 is folded and unfolded, the leg supporting base 16 is folded and unfolded along with the leg supporting part 4, and the leg supporting base 16 and the leg supporting part 4 form two-point support for the legs of the human body, so that the legs can be better supported.

Referring to fig. 1 and 2, the driving portion 5 includes a driving lever 17 and a driving cylinder 18 for giving a driving force to the driving lever 17, and the driving lever 17 is fixedly connected to the fourth link 8 and is perpendicular to the fourth link 8. The actuating cylinder 18 may be an electric cylinder, a hydraulic cylinder, an air cylinder, or the like. The driving cylinder 18 is rotatably connected at both ends to the driving rod 17 and the mounting rod 7, respectively. The fourth link 8 is driven by extending and retracting the piston rod of the driving cylinder 18.

Referring to fig. 2 and 3, in order to allow the sofa stretching apparatus to be more stably changed in three postures, the backrest part 3 is rotatably connected to the seating part 2 through a follower assembly. And the backrest part 3 is rotatably connected to the mounting baseplate 6 through a follower assembly. The following assembly includes a connecting seat 19 fixedly connected to the seating part 2, a ninth link 20 rotatably connected to the base 1, a tenth link 21 rotatably connected to the ninth link 20, and an eleventh link 22 rotatably connected to the tenth link 21. The tenth link 21 is rotatably connected to the link base 19, and the backrest portion 3 is rotatably connected to the link base 19 and the eleventh link 22.

Referring to fig. 2 and 3, spring connection blocks 23 are mounted on the fifth link 9 and the ninth link 20. A spring, which is not shown in the drawing, is arranged between the two spring connection blocks 23. When the elastic potential energy of the spring does not reach the threshold value, the driving rod 17 drives the fourth connecting rod 8 to rotate relative to the sitting part 2, so that the leg supporting part 4 is folded and unfolded, and the sofa stretching device is changed between the sitting posture and the TV posture. When the elastic potential energy of the spring reaches a threshold value, the driving rod 17 drives the fourth connecting rod 8 and the sitting portion 2 to translate relative to the base 1. Thereby the backrest part 3 is driven to rotate relative to the sitting part 2 and the base 1 under the linkage of the ninth connecting rod 20, the tenth connecting rod 21 and the eleventh connecting rod 22, and the sofa stretching device is changed between the lying posture and the TV posture.

Referring to fig. 2 and 3, the seat 2 is provided with a stopper 24, and when the elastic potential energy of the spring reaches a threshold value, the eighth link 12 abuts against the stopper 24. Therefore, the eighth connecting rod 12 can be prevented from excessively rotating, and when the elastic potential energy of the spring reaches a threshold value, the driving rod 17 can stably drive the fourth connecting rod 8 and the sitting portion 2 to translate relative to the base 1.

Referring to fig. 2 and 3, a support assembly 25 is coupled to the linkage assembly for enhancing the stability of the sofa extension. The support assembly 25 includes a first link 26 rotatably connected to the mounting base 6, a second link 27 rotatably connected to the first link 26, a third link 28 rotatably connected to the second link 27, and a connecting plate 29. The connecting plate 29 is rotatably connected to the base 1 and the third link 28, and the third link 28 is rotatably connected to the seventh link 11.

Referring to fig. 4 and 5, a stopper plate 30 is fixedly mounted on the connecting plate 29. A limit structure for supporting the support component 25 in sitting, TV and lying positions is arranged between the limit plate 30 and the base 1. The limiting structure comprises a limiting groove 31, a limiting nail 32 and a supporting nail 33 which are arranged on the limiting plate 30. The limiting groove 31 is arc-shaped and has two ends. The limit pin 32 is fixedly installed on the base 1 and slidably connected in the limit groove 31, and the support pin 33 is fixedly connected on the limit plate 30.

Referring to fig. 6, when the sofa extension device is in the sitting position, the limit pin 32 abuts against the upper end of the limit groove 31. When the sofa stretching device is in the TV position, the limiting nail 32 is abutted with the upper end of the limiting groove 31. Referring to fig. 5, when the sofa stretching device is in the lying position, the limit nail 32 abuts against the lower end of the limit groove 31. The abutting force of the groove wall of the spacing groove 31 to the spacing pin 32 is downward. The support pin 33 abuts against the lower end surface of the second link 27. The support force of the support pin 33 to the support member 25 is upward.

When the sofa stretching device is in a lying posture state, the supporting nails 33 and the limiting nails 32 simultaneously provide pulling force and supporting force, and are riveted with other workpieces, so that force balance in a complex stress state is formed, the forward inclination and sinking of one end of the sitting part 2 close to the leg supporting part 4 are effectively reduced, and the stability is enhanced.

The implementation principle of the functional sofa stretching device with good support performance in the embodiment of the application is as follows:

in the sitting posture and TV posture state, the upper end of the limit groove 31 and the limit nail 32 are used for limiting and supporting, and supporting force is provided for one end of the sitting part 2 close to the leg supporting part 4. When the sofa stretching device is changed from a sitting posture state and a TV posture state to a lying posture state, the limiting nail 32 is abutted against the lower end of the limiting groove 31, and the limiting nail 32 provides limiting to ensure that the workpiece does not rotate any more; meanwhile, the upper limit nails 32 arrive synchronously with other workpieces, and provide supporting force for the end of the sitting part 2 close to the leg supporting part 4, so that the end of the sitting part 2 close to the leg supporting part 4 does not sink any more. The workpiece in the lying posture state provides pulling force and supporting force simultaneously through the limiting nail 32, and is riveted with other workpieces, so that force balance in a complex stress state is formed, forward leaning and sinking of the suspension are effectively reduced, and stability is enhanced.

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: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a good function sofa stretching device of support nature which characterized in that: the folding seat comprises a base (1), a sitting part (2), a backrest part (3), a leg supporting part (4), a driving part (5), a linkage assembly and a supporting assembly (25), wherein the driving part (5) is used for providing driving force of a linear pair; the linkage assembly is used for driving the leg supporting part (4) to rotate relative to the sitting part (2) along with the driving of the driving part (5) to form a sitting posture, a TV posture and a lying posture; base (1) and linkage assembly are connected in supporting component (25), supporting component (25) are link mechanism, be equipped with limiting plate (30) on one of them connecting rod of supporting component (25), be equipped with the limit structure who is used for supporting component (25) when position of sitting, TV appearance and the appearance of lying between limiting plate (30) and base (1).

2. The functional sofa stretching apparatus with good support according to claim 1, wherein: the limiting structure comprises a limiting groove (31) formed in the limiting plate (30) and a limiting nail (32) fixedly installed in the base (1) and connected in the limiting groove (31) in a sliding mode, and the limiting nail (32) is connected with the limiting groove (31) in an abutting mode to form limiting support.

3. The functional sofa stretching apparatus with good support according to claim 2, wherein: when the leg supporting part (4) is in a sitting posture, the limiting nail (32) is abutted against the upper end of the limiting groove (31).

4. The functional sofa stretching apparatus with good support according to claim 2, wherein: when the leg supporting part (4) is in the TV posture, the limiting nail (32) is abutted with the upper end of the limiting groove (31).

5. The functional sofa stretching apparatus with good support according to claim 2, wherein: the limiting groove (31) is arc-shaped and is provided with two ends; when the stretching device is in a lying posture, the limiting nail (32) is abutted against the lower end of the limiting groove (31).

6. A functional sofa stretching apparatus with good supporting ability as claimed in claim 2 or 3, wherein: the limiting structure also comprises a supporting nail (33) fixedly arranged on the limiting plate (30); when the stretching device is in a lying position, the supporting nail (33) is abutted against the supporting component (25).

7. The functional sofa stretching apparatus with good support according to claim 6, wherein: the supporting force of the supporting component (25) by the supporting nail (33) is upward, and the abutting force of the groove wall of the limiting groove (31) to the limiting nail (32) is downward.

8. The functional sofa stretching apparatus with good support according to claim 7, wherein: supporting component (25) including rotate connect in first connecting rod (26) of base (1), rotate connect in second connecting rod (27) of first connecting rod (26), rotate and connect in third connecting rod (28), connecting plate (29) of second connecting rod (27), limiting plate (30) fixed connection is on connecting plate (29), connecting plate (29) rotate to be connected in base (1) and third connecting rod (28), and third connecting rod (28) rotate to be connected in the linkage subassembly.

9. The functional sofa stretching apparatus with good support function as claimed in claim 8, wherein: when the stretching device is in a lying position, the supporting nail (33) is abutted against the lower end surface of the second connecting rod (27).

10. The functional sofa stretching apparatus with good support according to claim 9, wherein: the linkage assembly comprises a fourth connecting rod (8) rotatably connected to the sitting portion (2), a fifth connecting rod (9) rotatably connected to the fourth connecting rod (8), a sixth connecting rod (10) rotatably connected to the fifth connecting rod (9), a seventh connecting rod (11) rotatably connected to the sixth connecting rod (10), and an eighth connecting rod (12) rotatably connected to the seventh connecting rod (11), the eighth connecting rod (12) is rotatably connected to the sitting portion (2), the driving portion (5) is connected to the fourth connecting rod (8), and the third connecting rod (28) is rotatably connected to the seventh connecting rod (11).