CN213308551U - Back flat-lying type folding sofa frame - Google Patents
Back flat-lying type folding sofa frame Download PDFInfo
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- CN213308551U CN213308551U CN202021229205.4U CN202021229205U CN213308551U CN 213308551 U CN213308551 U CN 213308551U CN 202021229205 U CN202021229205 U CN 202021229205U CN 213308551 U CN213308551 U CN 213308551U
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Abstract
The utility model relates to the technical field of sofa frameworks, in particular to a back lying type folding sofa frame, which comprises an underframe, a transmission rod, a driving device and two folding telescopic mechanisms; the folding telescopic mechanism comprises a connecting plate, a leg telescopic component, a leg supporting bracket, a linkage component, a back telescopic component and a back supporting bracket; the back telescoping assembly includes a back first connecting rod. The utility model provides a back flat folding sofa frame of formula of lying when the appearance state of lying, shank support bracket perk is higher, and ground is pressed close to more to back support bracket, for whole health provides perfect laminating and support, disperses each part of sofa frame evenly with people's gravity, lets the people enjoy the state of zero gravity, and the human body of being convenient for further relaxs the rest. Simultaneously, the flexible subassembly of back of the application's simple structure has reduced the cost of manufacturing.
Description
Technical Field
The utility model belongs to the technical field of sofa skeleton technique and specifically relates to indicate a back formula of lying folding sofa frame of lying.
Background
Along with the gradual improvement of the living standard of people, the electric sofa as a living enjoyment product is more and more introduced into families of common people, and compared with the traditional sofa, the electric sofa is more and more popular and advocated due to the unique comfort and functionality of the electric sofa. The traditional electric sofa can not be completely in a zero gravity state when in a lying posture state, namely, the leg support bracket is not high, the back is not close enough to the ground, and people can not relax further. Meanwhile, the back telescopic assembly of the traditional electric sofa frame is complex in structure and high in manufacturing cost.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a back is flat lies formula folding sofa frame, this back is flat lies formula folding sofa frame when the appearance state of lying, and shank support bracket perks more, and back support bracket more presses close to ground, provides perfect laminating and support for the whole health of people, disperses each part of sofa frame evenly with people's gravity, lets the people enjoy the state of zero gravity, and the human body of being convenient for further relaxes the rest. Simultaneously, the flexible subassembly of back of the application's simple structure has reduced the cost of manufacturing.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a back lying type folding sofa frame comprises an underframe, a transmission rod, a driving device and two folding telescopic mechanisms; the driving device is connected to the underframe, and the output end of the driving device is hinged to the transmission rod; the two folding telescopic mechanisms are respectively arranged at two ends of the transmission rod and are symmetrically arranged, and the driving device is used for driving the transmission rod to rotate and/or move so as to extend or retract the two folding telescopic mechanisms;
the folding telescopic mechanism comprises a connecting plate, a leg telescopic component, a leg supporting bracket, a linkage component, a back telescopic component and a back supporting bracket; two ends of the transmission rod are respectively and rotatably arranged on the connecting plates of the two folding telescopic mechanisms, and two ends of the transmission rod respectively penetrate through the connecting plates of the two folding telescopic mechanisms; the transmission rod is used for driving the leg telescopic assembly to rotate and the connecting plate to move, the rotating leg telescopic assembly is used for driving the leg support bracket to extend or retract, the moving connecting plate is used for driving the linkage assembly to rotate, and the rotating linkage assembly is used for driving the back telescopic assembly to rotate so as to enable the back support bracket to extend or retract; the linkage assembly is hinged with the connecting plate, the leg telescopic assembly and the back telescopic assembly respectively;
the back telescopic assembly comprises a back first connecting rod, one end of the back first connecting rod is hinged to the linkage assembly, the other end of the back first connecting rod is hinged to the back bearing bracket, and the back bearing bracket is hinged to the connecting plate; the hinged part of the back support bracket and the back first connecting rod and the hinged part of the back support bracket and the connecting plate are arranged at intervals.
Furthermore, the linkage assembly comprises a first linkage rod, a second linkage rod, a third linkage rod, a fourth linkage rod, a fifth linkage rod, a sixth linkage rod, a seventh linkage rod, a first linkage plate and a second linkage plate; one end of a first linkage rod is hinged to the underframe, the other end of the first linkage rod is hinged to one end of a second linkage rod, the other end of the second linkage rod is hinged to the connecting plate, one end of a third linkage rod is hinged to the middle of the first linkage rod, the other end of the third linkage rod is hinged to one end of a fourth linkage rod, the other end of the fourth linkage rod is hinged to one end of a fifth linkage rod, the other end of the fifth linkage rod is hinged to the leg telescopic assembly, the middle of the fourth linkage rod is hinged to the connecting plate, one end of a sixth linkage rod is hinged to the middle of the second linkage rod, the other end of the sixth linkage rod is hinged to the first linkage plate, one end of a seventh linkage rod is hinged to the underframe, the other end of the seventh linkage rod is hinged to the first linkage plate, one end of a first linkage rod on the back is hinged to the first linkage plate, one end of the; the hinge joint of the sixth linkage rod and the first linkage plate, the hinge joint of the seventh linkage rod and the first linkage plate, the hinge joint of the back first connecting rod and the first linkage plate, and the hinge joint of the second linkage plate and the first linkage plate are arranged at intervals.
Furthermore, the first linkage rod is a straight rod, one end of the first linkage rod is hinged to the tail end of the underframe so as to support the tilting height of one end of the connecting plate, and the other end of the connecting plate is close to the ground; one end of the connecting plate with the raised height is connected with the leg stretching component and the leg bearing bracket, and one end of the connecting plate close to the ground is connected with the back stretching component and the back bearing bracket and is close to the ground.
Furthermore, the leg stretching assembly comprises a leg first connecting rod, a leg second connecting rod, a leg third connecting rod, a leg fourth connecting rod, a leg fifth connecting rod and a leg sixth connecting rod; the one end of shank head rod is connected in the one end that the transfer line runs through the connecting plate, the other end of shank head rod articulates in the one end of shank second connecting rod, the other end of shank second connecting rod articulates in the middle part of shank third connecting rod, the one end of shank third connecting rod articulates in the connecting plate, the other end of shank third connecting rod articulates in the one end of shank fourth connecting rod, the other end of shank fourth connecting rod articulates in shank bearing bracket, the one end of shank fifth connecting rod articulates in the connecting plate, the other end of shank fifth connecting rod articulates in the one end of shank sixth connecting rod, the other end of shank sixth connecting rod articulates in shank bearing bracket, the middle part of shank fifth connecting rod articulates in the middle part of shank fourth connecting rod, the one end of fifth linkage rod articulates in the middle part of shank third.
Further, the first connecting rod is provided with a first clamping hook part, and the first clamping hook part is used for abutting against the leg part second connecting rod to limit the leg part second connecting rod.
Further, the back first connecting rod is a straight rod.
Furthermore, the second linkage plate is provided with a second clamping hook part, and the first linkage plate is provided with a limiting bump; the limiting convex block is used for abutting against the second clamping hook part to limit the second linkage plate.
The utility model has the advantages that: in the process of changing the sitting posture into the leisure posture of the back flat-lying type folding sofa frame, the driving device simultaneously drives the transmission rod to rotate and move towards the direction far away from the wall, the rotating transmission rod drives the leg stretching assembly to rotate, and the moving transmission rod drives the connecting plate to move. The flexible subassembly drive shank bracket of pivoted shank extends, the connecting plate that removes drives folding telescopic machanism and moves to the direction of keeping away from the wall on the whole, makes back and wall form certain distance, becomes the appearance of lying for the folding sofa frame of the flat formula of lying in back becomes the appearance of lying from the leisure, simultaneously, the connecting plate drive linkage subassembly that removes rotates along the pin joint with the connecting plate articulated, let each gangbar of linkage subassembly extend each other and open, but the linkage subassembly of this moment does not drive the flexible subassembly in back and rotate, the back bracket holds the gesture when sitting the appearance. After the back flat lying type folding sofa frame is changed from the sitting posture to the leisure posture, the driving device stops working.
In the process of changing the leisure posture into the lying posture of the back flat lying type folding sofa frame, the driving device continues to work, the driving device only drives the transmission rod to move towards the direction far away from the wall, the transmission rod is not driven to rotate, and the leg support bracket keeps the extending state. The movable transmission rod drives the connecting plate to continue to move, the movable connecting plate drives the back first connecting rod to rotate through the linkage assembly, the rotary back first connecting rod drives the back bearing bracket to rotate, meanwhile, the rotary back bearing bracket rotates along a hinged point with the connecting plate, and after the back lying type folding sofa frame is changed from a leisure posture to a lying posture, the driving device stops working.
The utility model provides a back flat folding sofa frame of formula of lying when the appearance state of lying, shank support bracket perk is higher, and ground is pressed close to more to back support bracket, for whole health provides perfect laminating and support, disperses each part of sofa frame evenly with people's gravity, lets the people enjoy the state of zero gravity, and the human body of being convenient for further relaxs the rest. Simultaneously, the flexible subassembly of back of the application's simple structure has reduced the cost of manufacturing.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of the sitting posture of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the leisure posture state of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the lying posture of the present invention.
Fig. 4 is a schematic structural view of a second linkage plate according to the present invention.
Description of reference numerals:
a chassis 1; a transmission rod 2; a drive device 3; a folding telescopic mechanism 4; a connecting plate 41; a leg telescoping assembly 42; a leg first connecting bar 421; a first hooking portion 4211; leg second connecting bar 422; a leg third connecting rod 423; leg fourth connecting rod 424; a leg fifth connecting bar 425; a leg sixth connecting bar 426; leg support brackets 43; a linkage assembly 44; a first linkage rod 441; a second linkage rod 442; the third link lever 443; a fourth linkage rod 444; a fifth link rod 445; a sixth linkage rod 446; a seventh linkage rod 447; a first linkage plate 448; a limit bump 4481; a second linkage plate 449; a second hook portion 4491; a back telescoping assembly 45; a back first connecting bar 451; a back support bracket 46.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
As shown in fig. 1 to 3, the back lying type folding sofa frame provided by the present invention comprises an underframe 1, a transmission rod 2, a driving device 3 and two folding telescopic mechanisms 4; the driving device 3 is connected to the underframe 1, and the output end of the driving device 3 is hinged to the transmission rod 2; the two folding telescopic mechanisms 4 are respectively arranged at two ends of the transmission rod 2 and are symmetrically arranged, and the driving device 3 is used for driving the transmission rod 2 to rotate and/or move so as to extend or retract the two folding telescopic mechanisms 4;
the folding telescopic mechanism 4 comprises a connecting plate 41, a leg telescopic component 42, a leg supporting bracket 43, a linkage component 44, a back telescopic component 45 and a back supporting bracket 46; two ends of the transmission rod 2 are respectively and rotatably arranged on the connecting plates 41 of the two folding telescopic mechanisms 4, and two ends of the transmission rod 2 respectively penetrate through the connecting plates 41 of the two folding telescopic mechanisms 4; the transmission rod 2 is used for driving the leg telescopic assembly 42 to rotate and the connecting plate 41 to move, the rotating leg telescopic assembly 42 is used for driving the leg support bracket 43 to extend or retract, the moving connecting plate 41 is used for driving the linkage assembly 44 to rotate, and the rotating linkage assembly 44 is used for driving the back telescopic assembly 45 to rotate so as to extend or retract the back support bracket 46; the linkage assembly 44 is respectively hinged with the connecting plate 41, the leg telescopic assembly 42 and the back telescopic assembly 45;
the back telescopic assembly 45 comprises a back first connecting rod 451, one end of the back first connecting rod 451 is hinged to the linkage assembly 44, the other end of the back first connecting rod 451 is hinged to a back supporting bracket 46, and the back supporting bracket 46 is hinged to the connecting plate 41; the hinge joint of the back support bracket 46 and the back first connecting rod 451 and the hinge joint of the back support bracket 46 and the connecting plate 41 are spaced apart from each other.
The back lying type folding sofa frame has three postures, namely a sitting posture, a leisure posture and a lying posture. When the two folding telescopic mechanisms 4 are in the contraction state, the back flat lying type folding sofa frame is in the sitting posture state. When the back flat lying type folding sofa frame is to be changed into a leisure posture or a lying posture from a sitting posture, namely, the two folding telescopic mechanisms 4 are changed into an extending state from a contracting state, the two folding telescopic mechanisms 4 are in the extending process, the back flat lying type folding sofa frame is changed into the leisure posture from the sitting posture, after the back flat lying type folding sofa frame is changed into the leisure posture, and when the two folding telescopic mechanisms 4 continue to extend again, the back flat lying type folding sofa frame is changed into the lying posture from the leisure posture.
In the process of changing the back flat-lying type folding sofa frame from a sitting posture to a leisure posture, the driving device 3 simultaneously drives the transmission rod 2 to rotate and move towards the direction far away from the wall, the rotating transmission rod 2 drives the leg stretching assembly 42 to rotate, and the moving transmission rod 2 drives the connecting plate 41 to move. The rotating leg stretching assembly 42 drives the leg support bracket 43 to extend, the moving connecting plate 41 drives the folding stretching mechanism 4 to integrally move towards the direction away from the wall, so that a certain distance is formed between the back and the wall, preparation is made for changing the leisure posture of the back lying type folding sofa frame into the lying posture, meanwhile, the moving connecting plate 41 drives the linkage assembly 44 to rotate along the hinged point hinged with the connecting plate 41, all linkage rods of the linkage assembly 44 are mutually extended, but the linkage assembly 44 does not drive the back stretching assembly 45 to rotate at the moment, and the back support bracket 46 keeps the posture in the sitting posture. After the back-lying type folding sofa frame is changed from the sitting posture to the leisure posture, the driving device 3 stops working.
In the process of changing the back flat lying type folding sofa frame from the leisure position to the lying position, the driving device 3 continues to work, the driving device 3 only drives the transmission rod 2 to move towards the direction away from the wall, the transmission rod 2 is not driven to rotate, and the leg supporting bracket 43 keeps the extending state. The movable transmission rod 2 drives the connection plate 41 to move continuously, the movable connection plate 41 drives the back first connection rod 451 to rotate through the linkage assembly 44, the rotating back first connection rod 451 drives the back support bracket 46 to rotate, meanwhile, the rotating back support bracket 46 rotates along a hinge point with the connection plate 41, and after the back lying type folding sofa frame is changed from a leisure posture to a lying posture, the driving device 3 stops working.
The utility model provides a back flat lying formula folding sofa frame when the appearance state of lying, shank support bracket 43 perk is higher, and back support bracket 46 more presses close to ground, for whole health provides perfect laminating and support, disperses each part of sofa frame evenly with people's gravity, lets the people enjoy the state of zero gravity, and the human body of being convenient for further relaxs the rest. Simultaneously, the back subassembly 45 that stretches out and draws back of this application's simple structure has reduced the cost of manufacturing.
As shown in fig. 1 to 3, in the present embodiment, the linkage assembly 44 includes a first linkage rod 441, a second linkage rod 442, a third linkage rod 443, a fourth linkage rod 444, a fifth linkage rod 445, a sixth linkage rod 446, a seventh linkage rod 447, a first linkage plate 448 and a second linkage plate 449; one end of the first linkage rod 441 is hinged to the underframe 1, the other end of the first linkage rod 441 is hinged to one end of the second linkage rod 442, the other end of the second linkage rod 442 is hinged to the connecting plate 41, one end of the third linkage rod 443 is hinged to the middle of the first linkage rod 441, the other end of the third linkage rod 443 is hinged to one end of the fourth linkage rod 444, the other end of the fourth linkage rod 444 is hinged to one end of the fifth linkage rod 445, the other end of the fifth linkage rod 445 is hinged to the leg stretching assembly 42, the middle of the fourth linkage rod 444 is hinged to the connecting plate 41, one end of the sixth linkage rod 446 is hinged to the middle of the second linkage rod 442, the other end of the sixth linkage rod 446 is hinged to the first linkage plate 448, one end of the seventh linkage rod 447 is hinged to the underframe 1, the other end of the seventh linkage rod 447 is hinged to the first linkage plate 448, and one end of the, one end of the second linkage plate 449 is hinged to the connecting plate 41, and the other end of the second linkage plate 449 is hinged to the first linkage plate 448; the hinge joint of the sixth linkage rod 446 and the first linkage plate 448, the hinge joint of the seventh linkage rod 447 and the first linkage plate 448, the hinge joint of the back first connecting rod 451 and the first linkage plate 448 and the hinge joint of the second linkage plate 449 and the first linkage plate 448 are arranged at intervals.
In the process of changing the back flat-lying type folding sofa frame from a sitting posture to a leisure posture, the driving device 3 simultaneously drives the transmission rod 2 to rotate and move towards the direction far away from the wall, the rotating transmission rod 2 drives the leg stretching assembly 42 to rotate, and the moving transmission rod 2 drives the connecting plate 41 to move. The rotating leg stretching assembly 42 drives the leg support bracket 43 to extend, the moving connecting plate 41 drives the folding stretching mechanism 4 to integrally move towards the direction away from the wall, so that a certain distance is formed between the back and the wall, preparation is made for changing the leisure posture of the back lying type folding sofa frame into the lying posture, meanwhile, the moving connecting plate 41 drives the linkage assembly 44 to rotate along the hinged point hinged with the connecting plate 41, all linkage rods of the linkage assembly 44 are mutually extended, but the linkage assembly 44 does not drive the back stretching assembly 45 to rotate at the moment, and the back support bracket 46 keeps the posture in the sitting posture. After the back-lying type folding sofa frame is changed from the sitting posture to the leisure posture, the driving device 3 stops working.
Specifically, the linkage assembly 44 is unfolded such that the driving device 3 drives the connecting plate 41 to move via the transmission rod 2, the moving connecting plate 41 drives the second linkage rod 442 and the second linkage plate 449 to move together, meanwhile, the second linkage rod 442 rotates at a certain angle along a hinge point hinged to the connecting plate 41, the moving and rotating second linkage rod 442 drives the first linkage rod 441 to rotate, and the rotating first linkage rod 441 rotates in a direction away from the wall along the hinge point hinged to the bottom frame 1. The rotating first linkage rod 441 drives one end of the third linkage rod 443 to rotate, and the rotating third linkage rod 443 drives the fourth linkage rod 444 to rotate. Meanwhile, the rotating leg stretching assembly 42 drives the fifth linkage rod 445 to rotate, the rotating fifth linkage rod 445 also drives the fourth linkage rod 444 to rotate, and the direction in which the third linkage rod 443 drives the fourth linkage rod 444 to rotate is consistent with the direction in which the fifth linkage rod 445 drives the fourth linkage rod 444 to rotate. The second linkage rod 442, which moves and rotates, drives the sixth linkage rod 446 to move and rotate, the sixth linkage rod 446, which moves and rotates, drives the first linkage plate 448 to move, and simultaneously the sixth linkage rod 446 rotates at a certain angle along a hinge point hinged with the first linkage plate 448. The moving first linkage plate 448 drives the seventh linkage rod 447 to rotate, and the rotating seventh linkage rod 447 rotates along a hinge point hinged with the underframe 1 in a direction away from the wall. First linkage plate 448 and second linkage plate 449 move synchronously with connecting plate 41. The linkage rods of the linkage assembly 44 are extended to prepare for changing the back flat lying type folding sofa frame from the leisure position to the lying position.
In the process of changing the back flat lying type folding sofa frame from the leisure position to the lying position, the driving device 3 continues to work, the driving device 3 only drives the transmission rod 2 to move towards the direction away from the wall, the transmission rod 2 is not driven to rotate, and the leg supporting bracket 43 keeps the extending state. The moving transmission rod 2 drives the connecting plate 41 to move continuously, the moving connecting plate 41 drives the second linkage rod 442 and the second linkage plate 449 to move continuously, meanwhile, the second linkage rod 442 rotates at a certain angle along a hinge point hinged with the connecting plate 41, the moving and rotating second linkage rod 442 drives the first linkage rod 441 to rotate, and the rotating first linkage rod 441 rotates in a direction away from the wall along the hinge point hinged with the underframe 1. The rotating first linkage rod 441 drives the third linkage rod 443 to rotate, the rotating third linkage rod 443 drives the fourth linkage rod 444 to rotate, the middle portion of the rotating fourth linkage rod 444 rotates along the connecting plate 41, meanwhile, the rotating fourth linkage rod 444 drives the fifth linkage rod 445 to rotate, and the rotating fifth linkage rod 445 rotates along a hinge point hinged to the leg stretching assembly 42. The second linkage rod 442 which moves and rotates drives the sixth linkage rod 446 to move and rotate, the sixth linkage rod 446 which moves and rotates drives the first linkage plate 448 to move and rotate, the first linkage plate 448 which moves and rotates drives the seventh linkage rod 447, the back first connecting rod 451 and the second linkage plate 449 to rotate at the same time, the seventh linkage rod 447 which rotates along a hinge point hinged with the underframe 1 in a direction away from the wall, the back first connecting rod 451 which rotates drives the back support bracket 46 to extend, one end of the second linkage plate 449 rotates along a hinge point hinged with the first linkage plate 448, the other end of the second linkage plate 449 moves along with the connecting plate 41, and after the back flat-lying sofa frame is changed from a leisure posture to a lying posture, the driving device 3 stops working. The linkage assembly 44 is compact and is effective to transmit power and drive the back support bracket 46 to extend, allowing the back lie flat folding sofa frame to be changed from a resting position to a lying position.
As shown in fig. 1 to 3, in this embodiment, the first linkage rod 441 is a straight rod, one end of the first linkage rod 441 is hinged to the end of the bottom frame 1 to support one end of the connection plate 41 to be raised, and the other end of the connection plate 41 is close to the ground; one end of the raised connecting plate 41 is raised together with the leg stretching assembly 42 and the leg support bracket 43, and one end of the connecting plate 41 close to the ground is raised together with the back stretching assembly 45 and the back support bracket 46 close to the ground.
The conventional first linkage rod 441 is generally a bent rod and is hinged to the middle rear portion of the base frame 1, one end of the conventional first linkage rod 441 cannot well support the tilting height of the connecting plate 41, and the other end of the connecting plate 41 is close to the ground, so that people can enjoy a state of no zero gravity. The first linkage rod 441 is a straight rod, one end of the first linkage rod 441 is hinged to the tail end of the underframe 1, and under the condition of equal length, the connecting line of two end points of the straight rod is longer than the connecting line of two end points of the bending rod, so that the height which can be supported by the straight rod is higher than that supported by the bending rod, and therefore, after the linkage assembly 44 extends, the first linkage rod 441 of the straight rod can support one end of the connecting plate 41 to be raised, and the other end of the connecting plate 41 is close to the ground; one end of the raised connecting plate 41 is raised together with the leg stretching assembly 42 and the leg support bracket 43, so that the leg of the person supported by the leg support bracket 43 is higher than the ground; one end of the connecting plate 41 close to the ground is connected with the back telescopic assembly 45 and the back support bracket 46 to close to the ground, so that the back of a person supported by the back support bracket 46 is close to the ground, the person can enjoy a zero-gravity state, and the person can further relax and rest conveniently.
As shown in fig. 1 to 3, in the present embodiment, the leg stretching assembly 42 includes a leg first connecting rod 421, a leg second connecting rod 422, a leg third connecting rod 423, a leg fourth connecting rod 424, a leg fifth connecting rod 425 and a leg sixth connecting rod 426; one end of leg first connecting rod 421 is connected to one end of driving rod 2 penetrating through connecting plate 41, the other end of leg first connecting rod 421 is hinged to one end of leg second connecting rod 422, the other end of leg second connecting rod 422 is hinged to the middle of leg third connecting rod 423, one end of leg third connecting rod 423 is hinged to connecting plate 41, the other end of leg third connecting rod 423 is hinged to one end of leg fourth connecting rod 424, the other end of leg fourth connecting rod 424 is hinged to leg bearing bracket 43, one end of leg fifth connecting rod 425 is hinged to connecting plate 41, the other end of leg fifth connecting rod 425 is hinged to one end of leg sixth connecting rod 426, the other end of leg sixth connecting rod 426 is hinged to leg bearing bracket 43, the middle of leg fifth connecting rod 425 is hinged to the middle of leg fourth connecting rod 424, and one end of fifth connecting rod 445 is hinged to the middle of leg third connecting rod 423.
When the back-lying type folding sofa frame is changed from a sitting posture to a leisure posture, the driving device 3 simultaneously drives the transmission rod 2 to rotate and move towards a direction away from the wall, the rotating transmission rod 2 drives the leg first connecting rod 421 to rotate together, the rotating leg first connecting rod 421 drives the leg second connecting rod 422 to rotate, the rotating leg second connecting rod 422 drives the leg third connecting rod 423 to rotate, the rotating leg third connecting rod 423 drives the leg fourth connecting rod 424 to rotate, the rotating leg fourth connecting rod 424 drives the leg fifth connecting rod 425 to rotate, one end of the rotating leg fifth connecting rod 425 rotates along a hinge joint hinged with the connecting plate 41, the other end of the rotating leg fifth connecting rod 425 drives the leg sixth connecting rod 426 to rotate, and the rotating leg fourth connecting rod 424 and the rotating leg sixth connecting rod 426 simultaneously drive the leg support bracket 43 to extend.
When the back flat lying type folding sofa frame is changed from a leisure posture to a lying posture, the driving device 3 continues to work, the driving device 3 only drives the transmission rod 2 to move towards the direction away from the wall, the transmission rod 2 is not driven to rotate, and the leg supporting bracket 43 keeps the extending state. Leg telescoping assembly 42 reliably drives leg support bracket 43 to extend or retract.
As shown in fig. 1, in the embodiment, the first connecting rod 421 is provided with a first hook portion 4211, and the first hook portion 4211 is used for abutting against the leg portion second connecting rod 422 to limit the leg portion second connecting rod 422.
When the back lying type folding sofa frame is in a contracted state, namely, the back lying type folding sofa frame is in a sitting posture state, the first clamping hook portion 4211 can abut against the leg second connecting rod 422 to stop and limit the leg second connecting rod 422, so that the leg second connecting rod 422 is prevented from being excessively contracted, the leg stretching assembly 42 is further prevented from being excessively contracted, and the structure of the leg stretching assembly 42 is protected.
As shown in fig. 1, in the present embodiment, the back first connecting rod 451 is a straight rod. By designing the back first connecting rod 451 as a straight rod, the back first connecting rod 451 can drive the back support bracket 46 to retract or extend while simplifying the structure of the back telescoping assembly 45. The back telescoping assembly 45 is simplified in construction, and the cost of manufacturing the back telescoping assembly 45 is reduced.
As shown in fig. 1, in this embodiment, the second linking plate 449 is provided with a second hook 4491, and the first linking plate 448 is provided with a limit protrusion 4481; the limiting protrusion 4481 is used to abut against the second hook 4491 to limit the second linkage plate 449.
When the back lying type folding sofa frame is in a contracted state, that is, the back lying type folding sofa frame is in a sitting posture state, the limit bump 4481 will abut against the second hook 4491 to stop and limit the second linkage plate 449, so as to prevent the second linkage plate 449 from contracting excessively, further prevent the linkage assembly 44 from contracting excessively, and protect the structure of the linkage assembly 44.
All the technical features in the embodiment can be freely combined according to actual needs.
The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.
Claims (7)
1. The utility model provides a back formula of lying folding sofa frame which characterized in that: comprises a chassis, a transmission rod, a driving device and two folding telescopic mechanisms; the driving device is connected to the underframe, and the output end of the driving device is hinged to the transmission rod; the two folding telescopic mechanisms are respectively arranged at two ends of the transmission rod and are symmetrically arranged, and the driving device is used for driving the transmission rod to rotate and/or move so as to extend or retract the two folding telescopic mechanisms;
the folding telescopic mechanism comprises a connecting plate, a leg telescopic component, a leg supporting bracket, a linkage component, a back telescopic component and a back supporting bracket; two ends of the transmission rod are respectively and rotatably arranged on the connecting plates of the two folding telescopic mechanisms, and two ends of the transmission rod respectively penetrate through the connecting plates of the two folding telescopic mechanisms; the transmission rod is used for driving the leg telescopic assembly to rotate and the connecting plate to move, the rotating leg telescopic assembly is used for driving the leg support bracket to extend or retract, the moving connecting plate is used for driving the linkage assembly to rotate, and the rotating linkage assembly is used for driving the back telescopic assembly to rotate so as to enable the back support bracket to extend or retract; the linkage assembly is hinged with the connecting plate, the leg telescopic assembly and the back telescopic assembly respectively;
the back telescopic assembly comprises a back first connecting rod, one end of the back first connecting rod is hinged to the linkage assembly, the other end of the back first connecting rod is hinged to the back bearing bracket, and the back bearing bracket is hinged to the connecting plate; the hinged part of the back support bracket and the back first connecting rod and the hinged part of the back support bracket and the connecting plate are arranged at intervals.
2. The back flat folding sofa frame of claim 1, wherein: the linkage assembly comprises a first linkage rod, a second linkage rod, a third linkage rod, a fourth linkage rod, a fifth linkage rod, a sixth linkage rod, a seventh linkage rod, a first linkage plate and a second linkage plate; one end of a first linkage rod is hinged to the underframe, the other end of the first linkage rod is hinged to one end of a second linkage rod, the other end of the second linkage rod is hinged to the connecting plate, one end of a third linkage rod is hinged to the middle of the first linkage rod, the other end of the third linkage rod is hinged to one end of a fourth linkage rod, the other end of the fourth linkage rod is hinged to one end of a fifth linkage rod, the other end of the fifth linkage rod is hinged to the leg telescopic assembly, the middle of the fourth linkage rod is hinged to the connecting plate, one end of a sixth linkage rod is hinged to the middle of the second linkage rod, the other end of the sixth linkage rod is hinged to the first linkage plate, one end of a seventh linkage rod is hinged to the underframe, the other end of the seventh linkage rod is hinged to the first linkage plate, one end of a first linkage rod on the back is hinged to the first linkage plate, one end of the; the hinge joint of the sixth linkage rod and the first linkage plate, the hinge joint of the seventh linkage rod and the first linkage plate, the hinge joint of the back first connecting rod and the first linkage plate, and the hinge joint of the second linkage plate and the first linkage plate are arranged at intervals.
3. The back flat folding sofa frame of claim 2, wherein: the first linkage rod is a straight rod, one end of the first linkage rod is hinged to the tail end of the underframe so as to support one end of the connecting plate to be raised, and the other end of the connecting plate is close to the ground; one end of the connecting plate with the raised height is connected with the leg stretching component and the leg bearing bracket, and one end of the connecting plate close to the ground is connected with the back stretching component and the back bearing bracket and is close to the ground.
4. The back flat folding sofa frame of claim 2, wherein: the leg telescopic assembly comprises a leg first connecting rod, a leg second connecting rod, a leg third connecting rod, a leg fourth connecting rod, a leg fifth connecting rod and a leg sixth connecting rod; the one end of shank head rod is connected in the one end that the transfer line runs through the connecting plate, the other end of shank head rod articulates in the one end of shank second connecting rod, the other end of shank second connecting rod articulates in the middle part of shank third connecting rod, the one end of shank third connecting rod articulates in the connecting plate, the other end of shank third connecting rod articulates in the one end of shank fourth connecting rod, the other end of shank fourth connecting rod articulates in shank bearing bracket, the one end of shank fifth connecting rod articulates in the connecting plate, the other end of shank fifth connecting rod articulates in the one end of shank sixth connecting rod, the other end of shank sixth connecting rod articulates in shank bearing bracket, the middle part of shank fifth connecting rod articulates in the middle part of shank fourth connecting rod, the one end of fifth linkage rod articulates in the middle part of shank third.
5. The back flat folding sofa frame of claim 4, wherein: the first connecting rod is provided with a first clamping hook part, and the first clamping hook part is used for abutting against the leg second connecting rod to limit the leg second connecting rod.
6. The back flat folding sofa frame of claim 1, wherein: the first connecting rod on the back is a straight rod.
7. The back flat folding sofa frame of claim 2, wherein: the second linkage plate is provided with a second clamping hook part, and the first linkage plate is provided with a limiting lug; the limiting convex block is used for abutting against the second clamping hook part to limit the second linkage plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229205.4U CN213308551U (en) | 2020-06-29 | 2020-06-29 | Back flat-lying type folding sofa frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229205.4U CN213308551U (en) | 2020-06-29 | 2020-06-29 | Back flat-lying type folding sofa frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213308551U true CN213308551U (en) | 2021-06-01 |
Family
ID=76082032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021229205.4U Active CN213308551U (en) | 2020-06-29 | 2020-06-29 | Back flat-lying type folding sofa frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213308551U (en) |
-
2020
- 2020-06-29 CN CN202021229205.4U patent/CN213308551U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230320 Address after: 511300 North side of Shisan Road, Shangtang Village, Shitan Town, Zengcheng District, Guangzhou City, Guangdong Province (plant B2) 103 Patentee after: Guangdong Jieke Smart Home Co.,Ltd. Address before: 523000 No.8, Wangyuan Road, Yanwu village, Dalingshan Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN JACKWELL HARDWARE Co.,Ltd. |