CN114568875B - Foldable functional sofa mechanical stretching device of foot rest - Google Patents
Foldable functional sofa mechanical stretching device of foot rest Download PDFInfo
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- CN114568875B CN114568875B CN202011367057.7A CN202011367057A CN114568875B CN 114568875 B CN114568875 B CN 114568875B CN 202011367057 A CN202011367057 A CN 202011367057A CN 114568875 B CN114568875 B CN 114568875B
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- leg rest
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- sofa
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- 230000007246 mechanism Effects 0.000 claims abstract description 87
- 238000000034 method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 5
- 241001122767 Theaceae Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004660 morphological change Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
- A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
Abstract
The utility model relates to a leg rest foldable functional sofa mechanical stretching device, which comprises a bottom frame, a backrest component, a seat frame, a leg supporting mechanism and a driving mechanism, wherein the leg supporting mechanism comprises a leg rest plate and a leg stretching mechanism connected with the driving mechanism for folding and unfolding the leg rest plate; when the second leg rest is connected with the first leg rest, the stretching device is in a long leg rest state; when the second leg rest is connected to the leg extension mechanism, the extension device is in a short leg rest condition. By adopting the technical scheme, when the space for placing the sofa is large, the long leg rest shape of the sofa can be selected. If the space for placing the sofa is smaller, the short leg rest shape of the sofa can be selected.
Description
Technical Field
The application relates to the field of houses, in particular to a functional sofa mechanical stretching device with a foldable foot rest.
Background
The sofa is currently applicable to various living areas of people, such as offices, living rooms, bedrooms, outdoors and the like. With the development of economy, the types of furniture used in daily life are increasingly large, and the requirements of the furniture on the use functions are also increasingly high. For example, a sofa capable of lifting, a rotatable sofa, a leisure sofa chair suitable for the elderly, and the like are more and more favored by people because of the diversified functions of the various products, and the sofa is convenient to use, comfortable and healthy. The sofa of the different types not only can achieve the use function of the traditional sofa, but also can be flexibly adjusted according to the use requirements of users so as to better meet the different use requirements of the users.
The existing sofa generally has two states of sitting posture and lying posture. Conventional sofa leg rest lengths are too space consuming for certain specific use scenarios, such as being prone to bumping into a front tea table or the like. If the leg rest is simply shortened, the internal mechanism of the sofa cannot be covered in the folded sitting posture state, so that the appearance is affected.
Disclosure of Invention
In order to improve the aesthetic measure, the foldable functional sofa mechanical stretching device of foot rest that this application provided adopts following technical scheme:
the leg rest foldable functional sofa mechanical stretching device comprises a bottom frame, a backrest assembly, a seat frame, a leg supporting mechanism and a driving mechanism, wherein the leg supporting mechanism comprises a leg rest plate and a leg stretching mechanism connected with the driving mechanism and used for folding and unfolding the leg rest plate;
when the second leg rest is connected with the first leg rest, the stretching device is in a long leg rest state, when the sofa is in a sitting position, the first leg rest and the second leg rest are spliced to form a vertical state and cover the leg stretching mechanism, and when the sofa is in a lying position, the first leg rest and the second leg rest are spliced to form a horizontal state;
when the second leg rest is connected with the leg stretching mechanism, the stretching device is in a short leg rest state, when the sofa is in a sitting position, the first leg rest and the second leg rest are in a vertical state after being spliced and cover the leg stretching mechanism, when the sofa is in a lying position, the first leg rest is horizontally arranged, the second leg rest and the first leg rest are arranged at an included angle, and the second leg rest covers part of the leg stretching mechanism.
By adopting the technical scheme, when the space for placing the sofa is large, the long leg rest shape of the sofa can be selected. When the sofa is in a long leg rest state, the sofa stretching device is folded, and the second leg rest and the first leg rest are just combined to block the leg stretching mechanism. The user can not see the leg stretching mechanism of the sofa from the front to the sofa, so that the attractive appearance is improved. Meanwhile, the condition that children, pets and the like stretch hands into the leg stretching mechanism from the front of the sofa is avoided, and potential safety hazards are reduced. When the sofa stretching device is unfolded, the first leg rest and the second leg rest are horizontally arranged when the sofa is in a lying position, so that the legs of a user can be better supported.
If the space for placing the sofa is smaller, the short leg rest shape of the sofa can be selected. When the sofa is in a short leg rest state, the sofa stretching device is folded, and when the whole sofa is in a sitting state, the second leg rest and the first leg rest are just combined to block the leg stretching mechanism. When the sofa stretching device is unfolded, the first leg rest is horizontally arranged, the second leg rest is turned inwards to block part of the leg stretching mechanism, so that the leg stretching mechanism is still shielded to a certain extent under the condition of supporting the legs of a user, and the attractiveness and safety are improved. Meanwhile, under the condition of smaller space, the sofa can still be used, and cannot collide with a tea table in front and the like.
Preferably, the second leg rest is rotatably connected to the first leg rest, the leg extension mechanism is detachably connected to the second leg rest through a first connecting component, and the first leg rest is detachably connected to the second leg rest through a second connecting component.
By adopting the technical scheme, the second leg rest is still connected with the first leg rest in the process of being connected with the leg stretching mechanism from the first leg rest, so that the second leg rest is convenient to switch in two states.
Preferably, the leg stretching mechanism comprises a first rod rotatably connected to the seat frame, a second rod rotatably connected to the seat frame and approximately parallel to the first rod, a third rod rotatably connected to the leg rest plate, and a fourth rod rotatably connected to the leg rest plate and approximately parallel to the third rod, wherein the third rod is rotatably connected to the first rod and the second rod, the second rod is positioned on one side of the first rod close to the third rod, and the fourth rod is rotatably connected to the second rod.
Through adopting above-mentioned technical scheme, first pole, second pole, third pole and fourth pole form a four-bar linkage, make first pole when rotating, the motion range of the tie point of third pole and leg rest board and the motion range of the tie point of fourth pole and leg rest board have the difference, can realize the rotation to leg rest board. The leg rest is converted in the two states of covering the leg stretching mechanism and being horizontally arranged for resting the legs.
Preferably, the first leg rest is rotatably connected to the third rod and the fourth rod, a fifth rod is connected between the second leg rest and the second rod, and the fifth rod is rotatably connected to the second leg rest and the second rod.
Through adopting above-mentioned technical scheme, the effect of transmission can be played to the fifth pole, makes the second put the shank not with first put shank fixed connection time, and the second is put the shank and can be linked with first put the shank, and when sofa wholly is in lying the appearance, first put the shank and be the level setting, and the second is put the shank and is inwards turned over, blocks partial shank stretching mechanism.
Preferably, the second leg rest comprises a second mounting seat, a second leg rest plate fixedly mounted on the second mounting seat, and a connecting plate which is connected with the second mounting seat in a sliding manner and is connected with the second mounting seat in a rotating manner, the fifth rod is connected with the connecting plate in a rotating manner, and the connecting plate and the second mounting seat are detachably connected through a first connecting component; the first leg rest comprises a first installation seat and a first leg rest plate fixedly installed on the first installation seat, the second installation seat and the first installation seat are detachably connected through a second connecting component, when the sofa is in a short leg rest state, the second installation seat is fixedly connected with the connecting plate, and when the sofa is in a long leg rest state, the second installation seat is fixedly connected with the first installation seat.
By adopting the technical scheme, the leg stretching mechanism can be ensured to be smoothly switched between the short leg rest mode and the long leg rest mode.
Preferably, the first connecting component comprises a first clamping groove formed in the connecting plate and a first clamping block fixedly arranged on the second mounting seat and used for being matched with the first clamping groove, and the second connecting component comprises a second clamping groove formed in the first mounting seat and a second clamping block fixedly arranged on the second mounting seat and used for being matched with the second clamping groove; when the sofa is in a short leg rest state, the first clamping block is embedded in the first clamping groove, and when the sofa is in a long leg rest state, the second clamping block is embedded in the second clamping groove.
Through adopting above-mentioned technical scheme, realize the second through the spacing power of first draw-in groove to first fixture block that put shank and shank extending mechanism's connection, when needs dismantlement, only need with first fixture block roll-off first draw-in groove can. The second leg rest part and the first leg rest part are fixedly connected through the limiting force of the second clamping groove to the second clamping block, and when the second clamping block needs to be disassembled, the second clamping block only needs to slide out of the second clamping groove. The operation is convenient and quick.
Preferably, a guide groove for guiding is formed in the connecting plate, and a guide shaft is fixedly arranged on the second mounting seat; when the sofa is in a long leg rest state and is converted from a sitting posture to a lying posture, the guide shaft is connected with the guide groove in a sliding manner.
By adopting the technical scheme, the sofa can play a role in guiding, so that when the sofa is converted from a sitting posture to a lying posture, the movement track of the second leg rest is established, and the posture conversion is more stable.
Preferably, a tight supporting spring is arranged between the second mounting seat and the first mounting seat, two ends of the tight supporting spring are respectively and fixedly mounted on the second mounting seat and the first mounting seat, and the tight supporting spring is used for enabling the second clamping block to be tightly supported in the second clamping groove.
Through adopting above-mentioned technical scheme, support tight spring can provide an elastic force, make the more stable joint of second fixture block in the second draw-in groove to make the more stable fixed connection of first mount pad in the second mount pad.
Preferably, the abutment spring is parallel to the first leg rest.
Through adopting above-mentioned technical scheme to make to support tight spring can be better to second mount pad application of force, make first fixture block can more stable inlay establish in first draw-in groove, or make the second fixture block more stable inlay establish in the second draw-in groove.
Preferably, the third rod is provided with a first limiting block and a second limiting block, and when the leg stretching mechanism is in a stretching state, the second rod is abutted against the first limiting block; when the leg stretching mechanism is in a furled state, the second rod is abutted against the second limiting block.
Through adopting above-mentioned technical scheme, first stopper and second stopper can play spacing effect and extend the mechanism and extend to the back of certain degree as the shank, and the second pole will butt first stopper, can not stretch out again. When the leg stretching mechanism stretches to a certain extent, the second rod abuts against the first limiting block and cannot stretch out again, and when the leg stretching mechanism is folded to a certain extent, the second rod abuts against the second limiting block and cannot be folded again. So that the leg stretching mechanism does not overstretch or overstretch. The occurrence of collision of parts due to over-extension or furling is reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the stretching device can be switched between a short leg rest state and a long leg rest state, so that the requirements of different users are met;
2. when the leg is put in a short state, the expansion device occupies small space, and the leg board can block the leg expansion mechanism in a sitting state, so that the possibility of failure caused by foreign objects entering the leg expansion mechanism is reduced while the attractiveness is improved;
3. the switching between the short leg rest state and the long leg rest state is convenient.
Drawings
Fig. 1 is a side view of an embodiment in a short leg rest-recumbent position.
Fig. 2 is a schematic view of the embodiment in a short leg rest-sitting position.
Fig. 3 is a schematic view of the structure of the embodiment in a short leg rest-lying position.
Fig. 4 is a partial schematic view of an embodiment in a short leg rest-recumbent position.
Fig. 5 is a schematic view of the first connection assembly of the embodiment in a short leg rest position.
Fig. 6 is a schematic view of the embodiment at a second connection assembly with a long leg rest.
Fig. 7 is a schematic view of the embodiment in a long leg rest-sitting position.
Fig. 8 is a schematic view of the structure of the embodiment in a long leg rest-lying position.
Fig. 9 is a partial schematic view of an embodiment in a long leg rest-recumbent position.
Fig. 10 is a partial schematic view of an embodiment in a long leg rest-recumbent position with the springs abutted.
Fig. 11 is a partial schematic view of an embodiment in a long leg rest position from a sitting position to a lying position.
Fig. 12 is a schematic diagram of the operation of the embodiment from a long leg rest to a short leg rest.
Reference numerals illustrate: 1. a chassis; 2. a backrest assembly; 3. a seat frame; 4. a leg support mechanism; 5. a driving mechanism; 6. a first lever; 7. a second lever; 8. a third lever; 9. a fourth lever; 10. a fifth lever; 11. a sixth lever; 12. a seventh lever; 13. an eighth lever; 14. a ninth lever; 15. a first leg rest; 16. a second leg rest; 17. a first mount; 18. a first leg rest; 19. a second mounting base; 20. a second leg rest; 21. a connecting plate; 22. a chute; 23. a rotating shaft; 24. a first connection assembly; 25. a first clamping groove; 26. a first clamping block; 27. a second connection assembly; 28. a second clamping groove; 29. a second clamping block; 30. a first connecting shaft; 31. a second connecting shaft; 32. a first limiting block; 33. a second limiting block; 34. a spring is abutted tightly; 35. a guide shaft; 36. a guide groove.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-12.
The embodiment of the application discloses a leg rest foldable functional sofa mechanical stretching device. Referring to fig. 1, the extension device includes a chassis 1, a backrest assembly 2, a seat frame 3, a leg support mechanism 4, and a driving mechanism 5. The leg support mechanism 4 includes a leg rest and a leg extension mechanism. The leg stretching mechanisms are arranged at two ends of the leg rest plate respectively.
The driving mechanism 5 drives the leg stretching mechanism to fold or unfold, thereby realizing the morphological change of the leg rest board. Referring to fig. 2, in a sitting posture state, the leg stretching mechanism is folded, the leg rest is arranged in a vertical direction and shields the leg stretching mechanism, so that the leg rest is attractive and the probability of foreign matters entering the leg stretching mechanism can be reduced. Referring to fig. 1, in a lying position, the leg stretching mechanism is unfolded and the leg rest portion structure is horizontally disposed, so that a supporting force can be provided to the legs of the person.
Specifically, referring to fig. 3, the leg stretching mechanism includes a first lever 6, a second lever 7, a third lever 8, a fourth lever 9, a fifth lever 10, a sixth lever 11, a seventh lever 12, an eighth lever 13, and a ninth lever 14. The first lever 6 is rotatably connected to the seat frame 3, and the second lever 7 is substantially parallel to the first lever 6 and is also rotatably connected to the seat frame 3. The third lever 8 is rotatably connected to the first lever 6 and the second lever 7, and the second lever 7 is located on the side of the first lever 6 close to the third lever 8. The fourth rod 9 is substantially parallel to the third rod 8 and is rotatably connected to the second rod 7. The leg rest is rotatably connected to the third and fourth bars 8 and 9, and the connection point of the third bar 8 and the leg rest and the connection point of the fourth bar 9 and the leg rest are connected in line. The first, second, third and fourth bars 6, 7, 8 and 9 form a four bar linkage so that the leg rest is converted between a horizontal and a vertical state when the first bar 6 is rotated.
Referring to fig. 3, the sixth lever 11 is rotatably coupled to the second lever 7, the seventh lever 12 is rotatably coupled to an end of the sixth lever 11 remote from the second lever 7, and the seventh lever 12 is rotatably coupled to the seat frame 3. The eighth lever 13 is rotatably connected to the first lever 6, and the ninth lever 14 is rotatably connected to an end of the eighth lever 13 remote from the first lever 6 and rotatably connected to the seat frame 3. The driving mechanism 5 may be a dual-shaft motor, and an output end of the driving mechanism 5 is connected to the seventh lever 12, so as to drive the seventh lever 12 to rotate. The driving force can be transmitted to the first rod 6 under the force transmission of the sixth rod 11, so that the leg stretching mechanism can be folded and unfolded. The sixth rod 11 and the seventh rod 12 may serve as a support for the second rod 7, and the eighth rod 13 and the ninth rod 14 may serve as a support for the first rod 6, so that the first rod 6 and the second rod 7 may be rotated more stably with respect to the seat frame 3.
To make the mechanical stretcher of the functional sofa suitable for more applications, referring to fig. 4, the leg rest plate includes a first leg rest 15 and a second leg rest 16. The first leg rest 15 includes a first mount 17 and a first leg rest plate 18 fixedly mounted on the first mount 17. The first mounting seats 17 are provided in two and are respectively positioned at two ends of the first leg rest 18. The second leg rest 16 includes a second mounting seat 19, a second leg rest plate 20 fixedly mounted on the second mounting seat 19, and a connecting plate 21 slidably and rotatably connected to the second mounting seat 19. The second mounting seats 19 and the connecting plates 21 are two, and the second mounting seats 19 are arranged at two ends of the second leg rest plate 20.
Referring to fig. 4, a connecting plate 21 corresponds to a second mounting 19 and, in turn, to a leg extension mechanism. Both ends of the fifth rod 10 are respectively rotatably connected to the second rod 7 and the corresponding connection plate 21. Referring to fig. 5, the connection plate 21 and the second mounting seat 19 are detachably connected by a first connection assembly 24. Referring to fig. 6, the second mounting seat 19 and the first mounting seat 17 are detachably connected through a second connecting assembly 27
When the second mounting seat 19 is fixedly connected to the connecting plate 21, the sofa is in a short leg rest state; when the second mounting seat 19 is fixedly connected to the first mounting seat 17, the sofa is in a long leg rest state.
Referring to fig. 2, if the space for placing the sofa is small, the short leg rest configuration of the sofa can be selected. When the sofa is in a short leg rest state, the sofa stretching device is folded, and when the whole sofa is in a sitting state, the second leg rest 16 and the first leg rest 15 are just combined to block the leg stretching mechanism. Referring to fig. 3, when the sofa stretching device is unfolded and the sofa is in a lying position as a whole, the first leg rest 18 is horizontally arranged, and the second leg rest 20 is turned inwards to block part of the leg stretching mechanism, so that the leg stretching mechanism is still shielded to a certain extent under the condition of ensuring the leg support of a user, and the attractiveness and the safety are improved. Meanwhile, under the condition of smaller space, the sofa can still be used, and cannot collide with a tea table in front and the like.
Referring to fig. 7, with the sofa in the long leg rest position, the sofa extension device is collapsed, and the second leg rest 16 and the first leg rest 15 are also just in combination to block the leg extension mechanism. The user can not see the leg stretching mechanism of the sofa from the front to the sofa, so that the attractive appearance is improved. Meanwhile, the condition that children, pets and the like stretch hands into the leg stretching mechanism from the front of the sofa is avoided, and potential safety hazards are reduced. Referring to fig. 8, when the sofa stretching device is unfolded, the first leg rest 15 and the second leg rest 16 are horizontally arranged when the sofa is in a lying position, so that the legs of a user can be better supported.
Specifically, referring to fig. 9, the second mounting seat 19 is provided with a chute 22 along a length direction thereof, and the first mounting seat 17 is fixedly connected with a rotating shaft 23, and the rotating shaft 23 is slidably connected to the chute 22 and rotatably connected to the chute 22. The rotating shaft 23 passes through the connecting plate 21 and is rotatably connected to the connecting plate 21. The connecting plate 21 is rotatably connected to the second mounting seat 19 through a rotating shaft 23. Referring to fig. 5, the first connecting assembly 24 includes a first clamping groove 25 formed on the connecting plate 21 and a first clamping block 26 fixedly disposed on the second mounting seat 19 and configured to cooperate with the first clamping groove 25. Referring to fig. 6, the second connection assembly 27 includes a second clamping groove 28 opened on the first mounting seat 17 and a second clamping block 29 fixedly provided on the second mounting seat 19 for being matched with the second clamping groove 28.
Referring to fig. 5, when the sofa is in the short leg rest state, the first clamping block 26 is embedded in the first clamping groove 25, and when the sofa is in the long leg rest state, referring to fig. 6, the second clamping block 29 is embedded in the second clamping groove 28. Referring to fig. 10, if the sofa is to be converted from a short leg rest to a long leg rest, the second mounting seat 19 is slid relative to the connecting piece, the first clamping block 26 is separated from the first clamping groove 25, and then the second mounting seat 19 is rotated relative to the first mounting seat 17 until the second mounting seat 19 is parallel to the first mounting seat 17. Then the second mounting seat 19 slides relative to the first mounting seat 17, and the rotating shaft 23 slides in the sliding groove 22 until the second clamping block 29 is clamped into the second clamping groove 28.
Referring to fig. 10, in order to make the short and long leg rest modes of the sofa more stable, a tightening spring 34 is provided between the second mount 19 and the first mount 17, the tightening spring 34 being parallel to the leg rest. Specifically, the first mounting seat 17 is fixedly provided with a first connecting shaft 30, and the second mounting seat 19 is fixedly provided with a second connecting shaft 31. The two ends of the abutting spring 34 are fixedly mounted on the first connecting shaft 30 and the second connecting shaft 31 respectively. The abutting spring 34 gives a tensile stress, so that the first clamping block 26 can be embedded in the first clamping groove 25 more stably, or the second clamping block 29 can be embedded in the second clamping groove 28 more stably.
Referring to fig. 11, in order to stabilize the movement locus of the second leg rest 16 in the long leg rest mode, a guide groove 36 for guiding is formed in the connection plate 21, and a guide shaft 35 is fixedly mounted to the second mount 19. When the sofa is in the long leg rest state and the sofa is converted from the sitting posture to the lying posture, the guide shaft 35 is slidably connected to the guide groove 36.
Referring to fig. 4, in order to prevent excessive movement of the leg stretching mechanism, a first stopper 32 and a second stopper 33 are mounted on the third lever 8. When the leg stretching mechanism is in a folded state, the second rod 7 abuts against the first limiting block 32. When the leg stretching mechanism is in the stretched state, the second lever 7 abuts against the second stopper 33.
The implementation principle of the leg rest foldable functional sofa mechanical stretching device is as follows:
1. in the initial state, the mechanical stretching device is in a short leg rest state, the first clamping block 26 is embedded in the first clamping groove 25, the second leg rest plate 20 is fixedly connected with the connecting plate 21, and is rotatably connected with the first leg rest 15;
2. when the sofa is in a sitting posture state, the first leg rest plate 18 and the second leg rest plate 20 are arranged in the vertical direction and are spliced into a vertical surface, so that the leg stretching mechanism is blocked, the attractiveness is improved, and the probability of foreign matters entering the leg stretching mechanism is reduced;
3. when the sofa needs to be converted from sitting to lying, the driving mechanism 5 drives the seventh rod 12 to rotate relative to the seat frame 3, and the first rod 6, the second rod 7, the third rod 8 and the fourth rod 9 are driven to rotate under the force transmission of the sixth rod 11, so that the leg stretching mechanism is changed from a folded state to an unfolded state, and the first leg rest plate 18 is gradually converted from vertical to horizontal due to different displacement given to the third rod 8 and the fourth rod 9, so that the leg rest plate 18 is convenient for providing supporting force for the legs of a user;
4. at this time, the second leg rest 20 rotates relative to the first leg rest 18 under the force transmitted by the fifth rod 10, so that it turns inwards, and a part of leg stretching mechanism is blocked; the second leg rest 20 does not strike the front table, making the sofa usable in a smaller space;
5. if the sofa needs to be converted from lying posture to sitting posture, the seventh rod 12 is reversely rotated by the driving mechanism 5;
6. if the sofa is to be converted from the short leg rest state to the long leg rest state, the leg stretching mechanism is firstly moved to the stretching state, and then as shown in fig. 12, the second mounting seat 19 is slid relative to the connecting sheet, so that the first clamping block 26 is separated from the first clamping groove 25;
7. rotating the second mount 19 relative to the first mount 17 until the second mount 19 is parallel to the first mount 17;
8. the second mounting seat 19 slides relative to the first mounting seat 17, at this time, the rotating shaft 23 slides in the sliding groove 22 until the second clamping block 29 is clamped into the second clamping groove 28, at this time, the second leg rest plate 20 is fixedly connected to the first leg rest plate 18;
9. at this time, if the sofa is in a sitting posture, the first leg rest 18 and the second leg rest 20 are arranged in a vertical direction and are spliced to form a vertical surface, so as to block the leg stretching mechanism; if the sofa is in a lying state, the first leg rest 18 and the second leg rest 20 are arranged horizontally and are spliced to form a horizontal plane for supporting the feet of the user.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides a folding function sofa mechanical stretching device of bracket, includes chassis (1), back subassembly (2), seat frame (3), shank supporting mechanism (4) and actuating mechanism (5), its characterized in that: the leg supporting mechanism (4) comprises a leg rest plate and a leg stretching mechanism connected with the driving mechanism (5) and used for folding and unfolding the leg rest plate, the leg rest plate comprises a first leg rest (15) and a second leg rest (16), the first leg rest (15) is rotatably connected with the leg stretching mechanism, and the second leg rest (16) can be selectively connected with the first leg rest (15) or the leg stretching mechanism;
when the second leg rest (16) is connected with the first leg rest (15), the stretching device is in a long leg rest state, when the sofa is in a sitting position, the first leg rest (15) and the second leg rest (16) are spliced to form a vertical state and cover the leg stretching mechanism, and when the sofa is in a lying position, the first leg rest (15) and the second leg rest (16) are spliced to form a horizontal state;
when the second leg rest (16) is connected to the leg stretching mechanism, the stretching device is in a short leg rest state, when the sofa is in a sitting position, the first leg rest (15) and the second leg rest (16) are spliced to form a vertical state and cover the leg stretching mechanism, when the sofa is in a lying position, the first leg rest (15) is horizontally arranged, the second leg rest (16) and the first leg rest (15) form an included angle, and the second leg rest (16) covers part of the leg stretching mechanism; the first leg rest (15) comprises a first mounting seat (17) and a first leg rest plate (18) fixedly mounted on the first mounting seat (17); the first mounting seats (17) are provided with two and are respectively positioned at two ends of the first leg rest plate (18).
2. The leg rest foldable functional sofa mechanical extension device of claim 1, wherein: the second leg rest (16) is rotatably connected to the first leg rest (15), the leg extension mechanism and the second leg rest (16) are detachably connected through a first connecting assembly (24), and the first leg rest (15) and the second leg rest (16) are detachably connected through a second connecting assembly (27).
3. The leg rest foldable functional sofa mechanical extension device of claim 2, wherein: the leg stretching mechanism comprises a first rod (6) connected to the seat frame (3) in a rotating mode, a second rod (7) connected to the seat frame (3) in a rotating mode and approximately parallel to the first rod (6), a third rod (8) connected to the leg rest plate in a rotating mode, and a fourth rod (9) connected to the leg rest plate in a rotating mode and approximately parallel to the third rod (8), the third rod (8) is connected to the first rod (6) and the second rod (7) in a rotating mode, the second rod (7) is located on one side, close to the third rod (8), of the first rod (6), and the fourth rod (9) is connected to the second rod (7) in a rotating mode.
4. A leg rest foldable functional sofa mechanical extension device according to claim 3, characterized in that: the first leg rest (15) is rotatably connected to the third rod (8) and the fourth rod (9), a fifth rod (10) is connected between the second leg rest (16) and the second rod (7), and the fifth rod (10) is rotatably connected to the second leg rest (16) and the second rod (7).
5. The leg rest foldable functional sofa mechanical extension device of claim 4, wherein: the second leg rest (16) comprises a second mounting seat (19), a second leg rest plate (20) fixedly mounted on the second mounting seat (19), and a connecting plate (21) which is connected with the second mounting seat (19) in a sliding manner and is rotationally connected with the second mounting seat (19), the fifth rod (10) is rotationally connected with the connecting plate (21), and the connecting plate (21) and the second mounting seat (19) are detachably connected through a first connecting component (24); the first leg rest (15) comprises a first mounting seat (17) and a first leg rest plate (18) fixedly mounted on the first mounting seat (17), the second mounting seat (19) is detachably connected with the first mounting seat (17) through a second connecting assembly (27), when the sofa is in a short leg rest state, the second mounting seat (19) is fixedly connected with the connecting plate (21), and when the sofa is in a long leg rest state, the second mounting seat (19) is fixedly connected with the first mounting seat (17).
6. The leg rest foldable functional sofa mechanical extension device of claim 5, wherein: the first connecting assembly (24) comprises a first clamping groove (25) formed in the connecting plate (21) and a first clamping block (26) fixedly arranged on the second mounting seat (19) and used for being matched with the first clamping groove (25), and the second connecting assembly (27) comprises a second clamping groove (28) formed in the first mounting seat (17) and a second clamping block (29) fixedly arranged on the second mounting seat (19) and used for being matched with the second clamping groove (28); when the sofa is in a short leg rest state, the first clamping block (26) is embedded in the first clamping groove (25), and when the sofa is in a long leg rest state, the second clamping block (29) is embedded in the second clamping groove (28).
7. The leg rest foldable functional sofa mechanical extension device of claim 5, wherein: a guide groove (36) for guiding is formed in the connecting plate (21), and a guide shaft (35) is fixedly arranged on the second mounting seat (19); when the sofa is in a long leg rest state and is converted from a sitting posture to a lying posture, the guide shaft (35) is connected with the guide groove (36) in a sliding manner.
8. The leg rest foldable functional sofa mechanical extension device of claim 6, wherein: the clamping device is characterized in that a clamping spring (34) is arranged between the second mounting seat (19) and the first mounting seat (17), two ends of the clamping spring (34) are fixedly mounted on the second mounting seat (19) and the first mounting seat (17) respectively, and the clamping spring (34) is used for enabling the second clamping block (29) to be clamped in the second clamping groove (28).
9. The leg rest foldable functional sofa mechanical extension device of claim 8, wherein: the abutment spring (34) is parallel to the first leg rest (18).
10. A leg rest foldable functional sofa mechanical stretching device according to claim 3,
the method is characterized in that: a first limiting block (32) and a second limiting block (33) are arranged on the third rod (8), and when the leg stretching mechanism is in a stretching state, the second rod (7) is abutted against the first limiting block (32); when the leg stretching mechanism is in a furled state, the second rod (7) is abutted against a second limiting block (33).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367057.7A CN114568875B (en) | 2020-11-28 | 2020-11-28 | Foldable functional sofa mechanical stretching device of foot rest |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367057.7A CN114568875B (en) | 2020-11-28 | 2020-11-28 | Foldable functional sofa mechanical stretching device of foot rest |
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| Publication Number | Publication Date |
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| CN114568875A CN114568875A (en) | 2022-06-03 |
| CN114568875B true CN114568875B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011367057.7A Active CN114568875B (en) | 2020-11-28 | 2020-11-28 | Foldable functional sofa mechanical stretching device of foot rest |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN217337955U (en) * | 2021-12-02 | 2022-09-02 | 顾家家居股份有限公司 | Stretching device of zero-gravity functional sofa |
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| CN114568875A (en) | 2022-06-03 |
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