CN114129007A - A functional sofa mechanical stretching device with a stabilizing mechanism - Google Patents

Abstract

The utility model relates to a function sofa machinery extends device with stabilizing mean, including the handrail mounting panel, sit the frame, connect respectively in two coupling assembling of sitting the frame both sides, coupling assembling includes preceding sitting frame support connecting rod, the back seat frame support connecting rod, the antedisplacement connecting piece with hang the swing subassembly, preceding sitting frame support connecting rod and back seat frame support connecting rod all rotate to be connected on sitting the frame, antedisplacement connecting piece both ends are rotated respectively and are connected in preceding sitting frame support connecting rod and back seat frame support connecting rod, the antedisplacement connecting piece is connected in the handrail mounting panel through hanging the swing subassembly, two hang and be connected with the stabilizing connecting rod between the swing subassembly, the stabilizing connecting rod is connected in hanging the swing subassembly. When the sofa changes from the sitting posture to the lying posture, the stabilizing connecting rod moves along with the movement of the suspension swing assembly, the torque is increased, the stability of the seat frame is better, and the seat frame is not easy to twist.

Description

Functional sofa mechanical stretching device with stabilizing mechanism

Technical Field

The application relates to the field of home furnishing, in particular to a functional sofa mechanical stretching device with a stabilizing mechanism.

Background

The functional sofa is a multifunctional sofa which can be converted in three states of sitting posture, TV posture and lying posture.

The existing sofa functional iron frame provides driving force through an electric cylinder to change postures. Because the electric cylinder is generally positioned in the middle of the functional iron frame, but cannot be positioned in the complete middle during installation, when the sofa iron frame is subjected to driving force to change postures, the two sides of the seat frame are stressed inconsistently, twisting is easy to occur, and the stability is poor.

Disclosure of Invention

In order to improve the stability of the sofa,

the application provides a function sofa mechanical stretching device with stabilizing mean adopts following technical scheme:

the utility model provides a function sofa machinery extends device with stabilizing mean, including the handrail mounting panel, sit the frame, connect respectively in two coupling assembling of sitting the frame both sides, coupling assembling includes preceding sitting frame support connecting rod, the back seat frame supports the connecting rod, the antedisplacement connecting piece and hang the swing subassembly, preceding sitting frame supports the connecting rod and all rotates with the back seat frame support connecting rod to be connected on sitting the frame, antedisplacement connecting piece both ends are rotated respectively and are connected in preceding sitting frame support connecting rod and back seat frame support connecting rod, the antedisplacement connecting piece is connected in the handrail mounting panel through hanging the swing subassembly, two hang and be connected with the stabilizing connecting rod between the swing subassembly.

Through adopting above-mentioned technical scheme, when the sofa changed to the appearance of lying from the position of sitting, the motion of hanging swing subassembly was followed to the stabilizing connecting rod, and the moment of torsion grow makes seat frame stability better, is difficult for taking place the wrench movement.

Optionally, when the sofa changes from the sitting posture to the lying posture, the stabilizing connecting rod is driven by the suspension swing assembly to rotate backwards, and the distance between the stabilizing connecting rod and the seat frame is increased.

Through adopting above-mentioned technical scheme, stabilizing the connecting rod and following the motion that hangs swing subassembly and rotate, sitting the face apart from the seat frame apart from the grow, the moment of torsion grow, stability is better.

Optionally, the stabilizing link is connected to the front end of the suspended swinging assembly.

Optionally, the suspension swing assembly includes a suspension front support member, a lower end of the suspension front support member is rotatably connected to a front end of the handrail mounting plate, and the stabilizing link is mounted on the suspension front support member.

Through adopting above-mentioned technical scheme, when the sofa changes to the posture of lying from the position of sitting, hang preceding support piece and swing backward to drive stabilizing the connecting rod and take place to rotate, stabilizing the connecting rod this moment and sitting frame seat face apart from the grow, thereby make the moment of torsion grow, make the holistic stability of extension device better.

Optionally, the front suspension support comprises a vertical rod part and a horizontal rod part for connecting the stabilizing connecting rod, and the horizontal rod part is located on the inward side of the lower end of the vertical rod part.

Through adopting above-mentioned technical scheme to make the stabilizing connecting rod more be close to the center and farther apart from the seat frame seat face, thereby realize big moment of torsion, make the holistic stability of extension device better.

Optionally, the stabilizing link is connected to the rear end of the suspended swing assembly.

Optionally, the suspension swing assembly comprises a suspension rear support, the lower end of the suspension rear support is rotatably connected to the rear end of the handrail mounting plate, and the stabilizing connecting rod is mounted on the suspension rear support.

Through adopting above-mentioned technical scheme, when the sofa changes to the appearance of lying from the position of sitting, hang back support piece and swing backward to drive stabilizing the connecting rod and take place to rotate, stabilizing the connecting rod this moment and sitting frame seat face apart from the grow, thereby make the moment of torsion grow, make the holistic stability of extension device better.

Optionally, the suspended rear support comprises a vertical rod part and a horizontal rod part for connecting the stabilizing connecting rod, and the horizontal rod part is located on the inward side of the lower end of the vertical rod part.

Through adopting above-mentioned technical scheme to make the stabilizing connecting rod more be close to the center and farther apart from the seat frame seat face, thereby realize big moment of torsion, make the holistic stability of extension device better.

Optionally, a backrest part is installed between the seat frame and the handrail mounting plate, the backrest part comprises a limiting rod, and a limiting nail is arranged on the handrail mounting plate; when the sofa is in a lying posture, the limiting rod is abutted against the limiting nail, so that the backrest part cannot shake randomly.

By adopting the technical scheme, the backrest part has better relying force when in the lying posture state, the possibility of random shaking of the backrest part is reduced, and the use comfort is improved.

Optionally, a return spring is connected between the forward connecting piece and the limiting rod, and the return spring is used for assisting the backrest part and the seat frame to return to a sitting posture state.

Through adopting above-mentioned technical scheme to make sofa more stable smooth and easy when the gesture changes.

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

the stretching device has no twisting phenomenon during operation, and has better stability;

in the lying state, the backrest part is limited, so that the backrest can be prevented from shaking;

has better use experience.

Drawings

Fig. 1 is a schematic view of a sofa in an extended configuration in a sitting position according to the related art.

Fig. 2 is a schematic view of the extended sofa structure in the lying position according to the related art.

FIG. 3 is a schematic structural view of embodiment 1 in a sitting posture.

Fig. 4 is a schematic structural view of the connecting member in embodiment 1.

Fig. 5 is a top view of the connection assembly of example 1.

Fig. 6 is a schematic structural view of the embodiment 1 when the sitting posture is changed to the lying posture.

Figure 7 is the front view of embodiment 1 in a sitting position.

Fig. 8 is a partial schematic view in the lying position of the embodiment 1.

FIG. 9 is a schematic structural view in a sitting posture in accordance with embodiment 2.

FIG. 10 is a schematic view showing the structure of the embodiment 2 when the sitting posture is changed to the lying posture.

Description of reference numerals: 1. a handrail mounting plate; 2. a seat frame; 3. a backrest part; 4. a leg support; 5. a connecting assembly; 6. a reinforcing bar; 7. a drive member; 8. the front seat frame supports the connecting rod; 9. the rear seat frame supports the connecting rod; 10. advancing the connecting piece; 11. a swinging rod is hung at the front; 12. a rear suspension swinging rod; 13. a front suspension support; 14. suspending a rear support member; 15. a first intermediate lever; 16. a second intermediate lever; 17. a synchronization lever; 18. a first lever; 19. a second lever; 20. a third lever; 21. a fourth bar; 22. a leg support base; 23. a foot support base; 24. a dowel bar; 25. a linkage rod; 26. a backrest connecting seat; 27. a back rest rod; 28. a first back support bar; 29. a second back support bar; 30. a limiting rod; 31. a limit pin; 32. a connecting nail; 33. a stabilizing link; 34. a vertical rod part; 35. a crossbar portion.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Referring to fig. 1 and 2, in the related art, a sofa extension structure includes an armrest mounting plate 1, a seat frame 2, abackrest portion 3, a leg support portion 4, and a connectingassembly 5. Thebackrest part 3 is rotatably connected to the armrest mounting plate 1. Coupling assembling 5 is equipped with two and is located seat frame 2 both sides respectively, and a coupling assembling 5 corresponds a handrail mounting panel 1. The seat frame 2 is connected to the handrail mounting plate 1 through a connectingcomponent 5 in a swinging way. The leg support part 4 is rotatably connected to one end of the seat frame 2 and the leg support part 4 can be unfolded and folded. The end of the seat frame 2 close to the leg support part 4 is set as the front end, and the end of the seat frame 2 close to thebackrest part 3 is set as the rear end.

Specifically, referring to fig. 1 and 2, the connectingassembly 5 includes a front seat frame supporting connecting rod 8, a rear seat frame supporting connecting rod 9, a forward moving connectingmember 10, and a suspension swinging assembly, the front seat frame supporting connecting rod 8 and the rear seat frame supporting connecting rod 9 are respectively rotatably connected to the seat frame 2, and the front seat frame supporting connecting rod 8 is located in front of the rear seat frame supporting connecting rod 9. The two ends of the forward connectingpiece 10 are respectively connected with the lower end of the front seat frame supporting connecting rod 8 and the lower end of the rear seat frame supporting connecting rod 9 in a rotating way. Thereach link 10 is connected to the handrail mounting plate 1 by a suspended swing assembly.

When the sofa is in a sitting position, the leg support 4 is folded under the seat frame 2, and the upper end of the front seat frame support link 8 is positioned in front of the lower end. When the sofa changes from the sitting posture to the lying posture, the seat frame 2 moves forward relative to the armrest mounting plate 1, and the leg support 4 rotates and unfolds. At this time, the upper end of the front seat frame support connecting rod 8 moves forward along with the seat frame 2, and forward rotation relative to the lower end of the front seat frame support connecting rod 8 is generated, so that the front seat frame support connecting rod 8 tilts forward relative to the armrest mounting plate 1, and the seat frame 2 is not lifted. If the seat frame 2 is lowered to a high level, the subsequent leg support 4 will interfere with the unfolding. Therefore, the existing functional sofa has high sitting height and poor sitting feeling.

Referring to fig. 2, in order to allow theconnection assemblies 5 at both sides of the seat frame 2 to move in synchronization better, a stabilizinglink 33 is connected between the two forward movingconnection members 10. However, in the operation process, the seat frame 2 is easy to twist and has poor stability.

Example 1:

the embodiment of the application discloses a functional sofa mechanical stretching device with a stabilizing mechanism. Referring to fig. 3, a functional sofa mechanical stretching apparatus with a stabilizing mechanism includes an armrest mounting plate 1, a seat frame 2, abackrest portion 3, a leg support portion 4, a connectingassembly 5, and a driving member 7. The handrail mounting panel 1 is equipped with two and is located seat frame 2 both sides respectively, is equipped with stiffener 6 between the handrail mounting panel 1, and 6 both ends of stiffener are fixed connection respectively in two handrail mounting panels 1. Thebackrest part 3 is rotatably connected to the handrail mounting plate 1, and the seat frame 2 is connected to the handrail mounting plate 1 in a swinging manner through a connectingassembly 5. The connectingcomponents 5 are two and are respectively positioned at two sides of the seat frame 2. The leg support part 4 is rotatably connected to one end of the seat frame 2 and the leg support part 4 can be unfolded and folded. The driving piece 7 is used for providing power for changing the sofa posture.

In order to improve the sitting feeling, the sitting height of the stretching device is reduced by 3cm to 11cm to 18cm, and the sitting depth of the stretching device is deepened to 70cm to 90 m. The height of the stretching device is the distance between the upper end surface of the seat frame 2 and the lowest end of the stretching device, and the depth of the stretching device is the length from thebackrest 3 to the forefront end of the stretching device. The requirements of reducing the sitting height of the sofa, deepening the sitting depth and improving the sitting feeling are met.

Specifically, referring to fig. 3, the connectingassembly 5 includes a front seat frame supporting connecting rod 8, a rear seat frame supporting connecting rod 9, a forward moving connectingmember 10 and a hanging swing assembly, the front seat frame supporting connecting rod 8 and the rear seat frame supporting connecting rod 9 are respectively rotatably connected to the seat frame 2, and the front seat frame supporting connecting rod 8 is located in front of the rear seat frame supporting connecting rod 9. The two ends of the forward connectingpiece 10 are respectively connected with the lower end of the front seat frame supporting connecting rod 8 and the lower end of the rear seat frame supporting connecting rod 9 in a rotating way. Thereach link 10 is connected to the handrail mounting plate 1 by a suspended swing assembly.

Referring to fig. 4 and 5, the suspension swing assembly includes a front suspension swing rod 11, a rearsuspension swing rod 12, asuspension front support 13, a suspensionrear support 14, a firstintermediate rod 15, and a secondintermediate rod 16. The front suspension swing rod 11 and the rearsuspension swing rod 12 are respectively connected to two ends of the side surface of the inward side of the forwardmovement connecting piece 10 in a rotating way. Two ends of the firstmiddle rod 15 are respectively and rotatably connected to the middle part of the rearsuspension swing rod 12 and the middle part of the forwardmovement connecting piece 10. The middle part of therear suspension support 14 is rotatably connected to the upper end of the rearsuspension swing rod 12, and the lower end of therear suspension support 14 is rotatably connected to the handrail mounting plate 1. The two ends of the secondmiddle rod 16 are respectively and rotatably connected with the upper end of the rearsuspension supporting piece 14 and the middle part of the front suspension swing rod 11. The upper end of the frontsuspension support piece 13 is rotatably connected to the upper end of the front suspension swing rod 11, and the lower end of the frontsuspension support piece 13 is rotatably connected to the handrail mounting plate 1.

Referring to fig. 3 and 6, in order to improve the stability of the seat frame 2, a stabilizinglink 33 is disposed between the two suspended rear supports 14, and both ends of the stabilizinglink 33 are respectively fixedly connected to the suspended rear supports 14. In the process that the sofa changes from the sitting posture to the lying posture, the stabilizing connectingrod 33 rotates along with the suspendedrear supporting piece 14, the distance between the stabilizing connecting rod and the seat surface of the seat frame 2 is increased, the torque is increased, and the stability is better. The probability that the seat frame 2 is twisted in the using process is reduced.

Specifically, the suspendedrear support 14 includes avertical rod portion 34 connected to the handrail mounting plate 1 and ahorizontal rod portion 35 fixedly connected to a lower end of thevertical rod portion 34. The two ends of the stabilizinglink 33 are fixedly connected to thecross bar 35.

Referring to fig. 3 and 6, the leg support part 4 includes two leg support structures at both sides of the seat frame 2 and a synchronizingbar 17 connecting the two leg support structures. The leg support structure comprises afirst bar 18, asecond bar 19, athird bar 20, afourth bar 21, a leg support 22, a foot support 23, adowel bar 24. Thefirst rod 18, thesecond rod 19, thethird rod 20, thefourth rod 21, theforce transmission rod 24 and theforce transmission rod 24 form a stretching and retracting linkage. The leg support base 22 and the foot support base 23 are unfolded and folded by the folding and unfolding linkage.

Specifically, referring to fig. 3 and 6, one end of thefirst lever 18 is rotatably coupled to the seat frame 2. Thesecond rod 19 is parallel to thefirst rod 18 and is located at the rear end of thefirst rod 18, and one end of thesecond rod 19 is rotatably connected to the seat frame 2. Thethird lever 20 is pivotally connected at one end to the lower end of thefirst lever 18 and at the other end to thetransfer lever 24. Thefourth rod 21 has one end rotatably connected to the lower end of thesecond rod 19 and the other end rotatably connected to the leg support base 22, and the middle portion of thefourth rod 21 is rotatably connected to thefirst rod 18. The end of thedowel bar 24, which is far away from thethird bar 20, is rotatably connected to the middle part of the foot support base 23. One end of the foot support 23 is rotatably connected to the end of the leg support 22 away from thefourth rod 21. Alinkage rod 25 is arranged between the front seat frame supporting connecting rod 8 and thesecond rod 19, and two ends of thelinkage rod 25 are respectively connected with the front seat frame supporting connecting rod 8 and thesecond rod 19 in a rotating way. Thesynchronization rod 17 is fixedly connected at both ends to thefirst rods 18 of the two leg support structures, respectively. The drive 7 is an electric cylinder, which is mounted at one end to the reinforcing rod 6 and at the other end to thesynchronization rod 17.

In the sitting position, the leg support 4 is folded under the seat frame 2. When the sofa is to be changed from the sitting position to the lying position, the driving member 7 drives thefirst rod 18 to rotate relative to the seat frame 2, thereby driving the whole leg supporting part 4 to be unfolded. Meanwhile, thesecond rod 19 transmits force to the front seat frame supporting connecting rod 8 through thelinkage rod 25 after rotating, so that the seat frame 2 is driven to move forwards.

Referring to fig. 7, in order to smoothly unfold the leg support 4 after the seat frame 2 is lowered, the upper end of the front seat frame support link 8 is located rearward of the lower end, i.e., the front seat frame support link 8 and the horizontal plane form an obtuse angle. When the sofa gesture becomes the appearance of lying from the position of sitting, the relative handrail mounting panel 1 of seat frame 2 removes to the front end, and preceding seat frame support link 8 upper end follows seat frame 2 and moves forward, has produced the forward rotation of relative preceding seat frame support link 8 lower extreme, makes the contained angle of preceding seat frame support link 8 and horizontal plane become the right angle gradually to can upwards raise when making seat frame 2 move forward. Thereby ensuring that the leg support 4 and the ground remain at a safe distance when the seat frame 2 is lowered.

Referring to fig. 3 and 8, thebackrest part 3 includes two backrest structures, which are respectively located at both sides of the seat frame 2. The backrest structure includes abackrest connection seat 26, abackrest rod 27, a firstbackrest support rod 28, a secondbackrest support rod 29, and astopper rod 30. Thebackrest connecting seat 26 is U-shaped and opens upward. The middle part of thebackrest connecting seat 26 is fixedly connected with the seat frame 2. One end of thebackrest rod 27 is rotatably connected to one end of thebackrest connecting seat 26. The upper end of the firstback support bar 28 is rotatably connected to the middle of theback support bar 27, and the other end is rotatably connected to the upper end of the secondback support bar 29. The upper end of the secondbackrest support bar 29 is rotatably connected to the end of thebackrest connecting seat 26 not connected with thebackrest rod 27. The lower end of the secondbackrest support bar 29 is rotatably connected to thestopper 30. The three points where the secondback support bar 29 is connected to the firstback support bar 28, theback connection seat 26 and thestopper 30 form a triangle. The middle part of the limitingrod 30 is rotatably connected with the handrail mounting plate 1. The handrail mounting plate 1 is provided with alimit nail 31. When the sofa is in the lying posture, the limitingrod 30 is abutted against the limitingnail 31, so that thebackrest rod 27 cannot shake randomly in the lying posture, and the use comfort is improved.

Referring to fig. 3 and 8, in order to facilitate the resetting, the forward moving connectingpiece 10 and the limitingrod 30 are both provided with connectingnails 32, and a reset spring is installed between the two connectingnails 32. The reset spring is used for providing a pulling force for the limitingrod 30, so that when the sofa recovers to a sitting posture, the limitingrod 30 can rotate and reset relative to the handrail mounting plate 1 smoothly.

The implementation principle of the functional sofa mechanical stretching device with the stabilizing mechanism in the embodiment of the application is as follows:

by reducing the sitting height, the sitting depth is deepened, and the sitting feeling is improved. In the sitting position, the front seat frame support link 8 and the horizontal plane form an obtuse angle. When the sofa gesture becomes the appearance of lying from the position of sitting, seat frame 2 moves to the front end relative to handrail mounting panel 1, and preceding seat frame supports connecting rod 8 and rotates, makes the contained angle of preceding seat frame support connecting rod 8 and horizontal plane become the right angle gradually to can upwards lifting when making seat frame 2 move forward. Thereby ensuring that the leg support 4 and the ground remain at a safe distance when the seat frame 2 is lowered. Meanwhile, the stabilizing connectingrod 33 rotates along with the suspendedrear supporting piece 14, the distance between the stabilizing connecting rod and the seat surface of the seat frame 2 is increased, the torque is increased, and the stability is better. Further, the seat frame 2 does not twist when the posture of the sofa is changed.

Example 2:

the difference between embodiment 2 and embodiment 1 is that, referring to fig. 9 and 10, both ends of thestabilizer link 33 are fixedly connected to thefront suspension support 13, respectively. In the process of changing the sofa from the sitting posture to the lying posture, the stabilizing connectingrod 33 rotates backwards along with the swing of the frontsuspension supporting piece 13, the distance between the stabilizing connecting rod and the seat surface of the seat frame 2 is increased, the torque is increased, and the stability is better. The probability that the seat frame 2 is twisted in the using process is reduced.

Specifically, thefront suspension support 13 includes avertical rod portion 34 connected to the handrail mounting plate 1 and ahorizontal rod portion 35 fixedly connected to a lower end of thevertical rod portion 34. The two ends of the stabilizinglink 33 are fixedly connected to thecross bar 35.

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 (10)

1. The utility model provides a function sofa mechanical stretching device with stabilizing mean which characterized in that: including handrail mounting panel (1), sit frame (2), connect respectively in two coupling assembling (5) of sitting frame (2) both sides, coupling assembling (5) are including preceding sitting frame support connecting rod (8), back sitting frame support connecting rod (9), antedisplacement connecting piece (10) and hang the swing subassembly, preceding sitting frame support connecting rod (8) and back sitting frame support connecting rod (9) all rotate to be connected on sitting frame (2), antedisplacement connecting piece (10) both ends rotate respectively to be connected in preceding sitting frame support connecting rod (8) and back sitting frame support connecting rod (9), antedisplacement connecting piece (10) are connected in handrail mounting panel (1) through hanging the swing subassembly, two hang and are connected with stabilizing connecting rod (33) between the swing subassembly.

2. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 1, wherein: when the sofa changes from a sitting posture to a lying posture, the stabilizing connecting rod is driven by the suspension swinging assembly to rotate backwards, and the distance between the stabilizing connecting rod and the seat frame is increased.

3. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 2, wherein: the stabilizing connecting rod (33) is connected to the front end of the suspension swing assembly.

4. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 3, wherein: the suspension swing assembly comprises a suspension front support piece (13), the lower end of the suspension front support piece (13) is rotatably connected to the front end of the handrail mounting plate (1), and the stabilizing connecting rod (33) is mounted on the suspension front support piece (13).

5. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 2, wherein: the front suspension support piece (13) comprises a vertical rod part (34) and a transverse rod part (35) for connecting the stabilizing connecting rod (33), and the transverse rod part (35) is located on the inward side of the lower end of the vertical rod part (34).

6. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 2, wherein: the stabilizing connecting rod (33) is connected to the rear end of the suspension swing assembly.

7. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 5, wherein: the suspension swing assembly comprises a suspension rear support piece (14), the lower end of the suspension rear support piece (14) is rotatably connected to the rear end of the handrail mounting plate (1), and the stabilizing connecting rod (33) is mounted on the suspension rear support piece (14).

8. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 2, wherein: the rear suspension support (14) comprises a vertical rod part (34) and a transverse rod part (35) for connecting the stabilizing connecting rod (33), and the transverse rod part (35) is located on the inward side of the lower end of the vertical rod part (34).

9. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 2, wherein: a backrest part (3) is arranged between the seat frame (2) and the handrail mounting plate (1), the backrest part (3) comprises a limiting rod (30), and a limiting nail (31) is arranged on the handrail mounting plate (1); when the sofa is in a lying posture, the limiting rod (30) is abutted against the limiting nail (31), so that the backrest part (3) cannot shake randomly.

10. The functional sofa mechanical stretching device with stabilizing mechanism as claimed in claim 9, wherein: a return spring is connected between the forward movement connecting piece (10) and the limiting rod (30), and the return spring is used for assisting the backrest part (3) and the seat frame (2) to return to a sitting posture state.

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