CN210008763U - Backrest wall-contactable sofa frame with improved structure - Google Patents
Backrest wall-contactable sofa frame with improved structure Download PDFInfo
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- CN210008763U CN210008763U CN201920625795.3U CN201920625795U CN210008763U CN 210008763 U CN210008763 U CN 210008763U CN 201920625795 U CN201920625795 U CN 201920625795U CN 210008763 U CN210008763 U CN 210008763U
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Abstract
The utility model relates to the technical field of sofa frameworks, in particular to a backrest wall-contactable sofa frame with an improved structure, 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 first support bracket, a linkage component, a back telescopic component and a back support bracket; 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, a leg sixth connecting rod, a leg seventh connecting rod and a leg eighth connecting rod; the utility model provides a but back touches wall formula sofa frame when the seat appearance state, the back can paste tight wall, need not leave the distance between back and the wall, increases the pleasing to the eye that room furniture was put, practices thrift the space. And the structure and the size reasonable in design of the flexible subassembly of shank, under the state of stretching, the first support bracket of shank leaves the high step-down on ground, improves sofa frame's comfort level and user's experience sense.
Description
Technical Field
The utility model relates to a skeleton technical field of sofa especially indicates a structural improvement lean against and can touch wall formula sofa frame.
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. When the traditional electric sofa is in a sitting posture state, the backrest needs to be away from the wall for a certain distance, and the backrest and the wall for a certain distance are extended spaces reserved for the electric sofa, so that the electric sofa can be changed into a leisure posture or a lying posture from the sitting posture. However, the backrest is spaced from the wall by a certain distance, which not only affects the appearance of furniture in the room, but also wastes the room space. Meanwhile, the leg support bracket of the traditional electric sofa is higher than the ground, so that the comfort level of the electric sofa and the experience of a user are reduced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a structural improvement lean against and can touch wall formula sofa frame, should lean against and can touch wall formula sofa frame when the position state of sitting, the back can paste tight wall, need not leave the distance between back and the wall, and lean against and can touch wall formula sofa frame and can follow the position and transform into leisure appearance or the appearance of lying, not only increase the pleasing to the eye that room furniture was put, can practice thrift the space moreover. And the structure and the size reasonable in design of the flexible subassembly of shank, under the state of stretching, the first support bracket of shank leaves the high step-down on ground, improves sofa frame's comfort level and user's experience sense. Under the contraction state, the structure is more compact, the occupied space is less, and the transportation is convenient.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a backrest wall-contactable sofa frame with an improved structure comprises an underframe, a transmission rod, a driving device and two folding telescopic mechanisms; the driving device is connected with the bottom frame; the two folding telescopic mechanisms are respectively arranged at two ends of the transmission rod and are symmetrically arranged, and the driving device drives 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 assembly, a leg first support bracket, a linkage assembly, a back telescopic assembly and a back support 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 protrude out of 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 first 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 respectively hinged with the connecting plate, the leg telescopic assembly and the back telescopic assembly;
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, a leg sixth connecting rod, a leg seventh connecting rod and a leg eighth connecting rod; one end of the first leg connecting rod is connected to the part of the transmission rod, which protrudes out of the connecting plate, the other end of the first leg connecting rod is hinged to one end of the second leg connecting rod, the other end of the second leg connecting rod is hinged to the middle of the third leg connecting rod, one end of the third leg connecting rod is hinged to the connecting plate, the other end of the third leg connecting rod is hinged to one end of the fourth leg connecting rod, the other end of the fourth leg connecting rod is hinged to one end of the seventh leg connecting rod, the other end of the seventh leg connecting rod is hinged to one end of the eighth leg connecting rod, and the other end of the eighth leg connecting rod is; one end of the fifth leg connecting rod is hinged to the connecting plate, the other end of the fifth leg connecting rod is hinged to one end of the sixth leg connecting rod, the other end of the sixth leg connecting rod is hinged to the first leg bearing bracket, the middle of the fifth leg connecting rod is hinged to the middle of the fourth leg connecting rod, and the middle of the sixth leg connecting rod is hinged to the middle of the seventh leg connecting rod.
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 the first linkage rod is hinged to the underframe, the other end of the first linkage rod is hinged to one end of the second linkage rod, the other end of the second linkage rod is hinged to the connecting plate, one end of the 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 the fourth linkage rod, the other end of the fourth linkage rod is hinged to one end of the fifth linkage rod, the other end of the fifth linkage rod is hinged to the middle of the third connecting rod of the leg, the middle of the fourth linkage rod is hinged to the connecting plate, one end of the 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 the seventh linkage rod is hinged to the underframe, the other end of the seventh linkage rod is hinged to the first linkage plate, the back telescopic assembly 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 telescopic assembly 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 back telescopic assembly comprises a back first connecting rod, a back second connecting rod, a back third connecting rod and a sofa support bracket; the back first connecting rod comprises a first rod and a second rod which are integrally formed, and the first rod and the second rod are arranged in a crossed mode; the one end of first pole articulates in first ganged plate, and the other end of first pole is connected in the one end of second pole, and the other end of second pole articulates in back support bracket, and the one end of back second connecting rod articulates in first ganged plate, and the other end of back second connecting rod articulates in back support bracket, and sofa support bracket connects in the connecting plate, and the one end of back third connecting rod articulates in sofa support bracket, and the other end of back third connecting rod articulates in the junction of first pole and second pole.
Furthermore, the second linkage plate is provided with a first clamping hook part, and the first linkage plate is provided with a first limiting bump; when the backrest wall-contactable sofa frame is in a contraction state, the first limiting lug props against the first clamping hook part and is used for limiting the second linkage plate.
Further, shank seventh connecting rod includes integrated into one piece's shank seventh connecting rod body and shank second support bracket, and shank seventh connecting rod body and shank second support bracket alternately set up, and the one end of shank seventh connecting rod body articulates in shank fourth connecting rod, and the other end of shank seventh connecting rod body articulates in shank eighth connecting rod, and the middle part of shank seventh connecting rod body articulates in the middle part of shank sixth connecting rod.
Furthermore, the driving device comprises a slide rail, a slide block, a driving assembly and two connecting pieces; the driving assembly is arranged on the bottom frame, the sliding rail is arranged on the bottom frame, the sliding block is arranged on the sliding rail in a sliding manner, and the driving assembly is used for driving the sliding block to slide along the sliding rail; the two connecting pieces are respectively positioned on two sides of the sliding block, one end of each connecting piece is rotatably connected to the sliding block, and the other end of each connecting piece is hinged to the transmission rod; the sliding slide block drives the transmission rod to rotate and/or move through the two connecting pieces.
Furthermore, the connecting piece comprises a connecting arm and a support lug frame, the connecting arm comprises a first connecting block and a second connecting block connected to the first connecting block, and the first connecting block and the second connecting block are arranged in a crossed mode; the lug support is connected to the transmission rod, one end of the first connecting block is hinged to the sliding block, and one end, far away from the first connecting block, of the second connecting block is hinged to the lug support.
Furthermore, a plurality of transverse connecting rods are connected between the two folding telescopic mechanisms, one end of each transverse connecting rod is connected to one folding telescopic mechanism, and the other end of each transverse connecting rod is connected to the other folding telescopic mechanism.
The utility model has the advantages that: when the backrest wall-contactable sofa frame is to be changed from a sitting posture to a leisure posture, the driving device drives the transmission rod to rotate and simultaneously move towards a direction far away from the wall, the rotating transmission rod drives the leg telescopic assembly to rotate, and the moving transmission rod drives the connecting plate to move. The first support bracket of pivoted shank subassembly drive leg extends, the connecting plate that removes drives folding telescopic machanism and moves to the direction of keeping away from the wall integratively, make and lean against and form certain distance with the wall, it makes preparation to become the appearance of lying from the leisure appearance for leaning against can touch wall formula sofa frame, simultaneously, the connecting plate drive linkage subassembly that removes rotates along articulated department with the connecting plate, let each gangbar of linkage subassembly extend each other, it makes preparation to become the appearance of lying from the leisure appearance for leaning against can touch wall formula sofa frame, but the linkage subassembly of this moment does not drive back telescopic machanism and rotates, the back support bracket is keeping the gesture when sitting the appearance. After the backrest wall-contactable sofa frame is changed from the sitting posture to the leisure posture, the driving device stops working. Specifically, the first process that holds the bracket and extend of shank subassembly drive leg portion does, the pivoted transfer line drives the shank head rod and rotates together, pivoted shank head rod drives shank second connecting rod and rotates, pivoted shank second connecting rod drives shank third connecting rod and rotates, pivoted shank third connecting rod drives shank fourth connecting rod and rotates, pivoted shank fourth connecting rod drives shank fifth connecting rod and shank seventh connecting rod and rotates, the one end of pivoted shank fifth connecting rod rotates along the articulated department with the connecting plate articulated, the other end of pivoted shank fifth connecting rod drives shank sixth connecting rod and rotates, pivoted shank seventh connecting rod drives shank eighth connecting rod and rotates, pivoted shank sixth connecting rod and pivoted shank eighth connecting rod drive the first support bracket of shank simultaneously and extend.
When the backrest wall-contactable sofa frame is changed from a leisure posture to a lying posture, the driving device continues to work, the driving device only drives the transmission rod to move towards the direction away from the wall, the transmission rod is not driven to rotate, and the first leg supporting bracket keeps an extending state. The movable transmission rod drives the connecting plate to continue moving, the movable connecting plate drives the linkage assembly to continue rotating along the hinged position hinged with the connecting plate, the rotary linkage assembly drives the back telescopic assembly to rotate, the rotary back telescopic assembly drives the back bearing bracket to extend, and after the backrest contactable wall type sofa frame is changed from a leisure posture to a lying posture, the driving device stops working.
The utility model provides a can touch wall formula sofa frame by leaning on when sitting posture state, the back can paste tight wall, need not leave the distance between back and the wall, and can touch wall formula sofa frame by leaning on can follow the sitting posture and transform into leisure appearance or the appearance of lying, not only increases the pleasing to the eye that room furniture was put, can practice thrift the space moreover. And the structure and the size reasonable in design of the flexible subassembly of shank, under the state of stretching, the first support bracket of shank leaves the high step-down on ground, improves sofa frame's comfort level and user's experience sense. Under the contraction state, the structure is more compact, the occupied space is less, and the transportation is convenient.
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 perspective view of another perspective of the sitting position of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the leisure posture state of the present invention.
Fig. 4 is a schematic perspective view of another view angle of the leisure posture state of the present invention.
Fig. 5 is a schematic view of a three-dimensional structure of the lying posture of the present invention.
Fig. 6 is a schematic perspective view of another angle of view of the utility model in a lying posture.
Fig. 7 is a schematic perspective view of a seventh connecting rod for legs according to the present invention.
Fig. 8 is a schematic perspective view of a second linkage plate according to the present invention.
Description of reference numerals:
the base frame 1, the transmission rod 2, the driving device 3, the sliding rail 31, the sliding block 32, the driving assembly 33, the connecting piece 34, the connecting arm 341, the lug support 342, the first connecting block 343, the second connecting block 344, the folding telescopic mechanism 4, the connecting plate 41, the leg telescopic assembly 42, the leg first connecting rod 421, the leg second connecting rod 422, the leg third connecting rod 423, the leg fourth connecting rod 424, the leg fifth connecting rod 425, the leg sixth connecting rod 426, the leg seventh connecting rod 427, the leg seventh connecting rod body 4271, the leg second support bracket 4272, the leg eighth connecting rod 428, the leg first support bracket 43, the linkage assembly 44, the first linkage rod 441, the second linkage rod 442, the third linkage rod 443, the fourth linkage rod 444, the fifth linkage rod 445, the sixth linkage rod 446, the seventh linkage rod 447, the first linkage plate 448, the first limit bump 4481, the second linkage plate 449, first hook 4491, back extension module 45, back first connecting rod 451, first rod 4511, second rod 4512, back second connecting rod 452, back third connecting rod 453, sofa support bracket 454, back support bracket 46, and transverse connecting rod 5.
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 6, the utility model provides a backrest wall-contactable sofa frame with an improved structure, which comprises a bottom frame 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 drives 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 first 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 protrude out of 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 first 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;
Since the folding telescopic mechanisms 4 are symmetrically arranged at the two ends of the transmission rod 2, only one of the folding telescopic mechanisms 4 is shown in fig. 1 to 6, so that the backrest wall-contactable sofa frame can be observed to have three postures, namely a sitting posture, a leisure posture and a lying posture. When the two folding telescopic mechanisms 4 are in a contraction state, the backrest can touch the wall type sofa frame to be in a sitting posture state, and the backrest is pressed against the wall body. When the backrest touch wall type 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 extension state from a contraction state, the backrest touch wall type sofa frame is changed into the leisure posture from the sitting posture in the extension process of the two folding telescopic mechanisms 4, and the backrest touch wall type sofa frame is changed into the leisure posture, and when the two folding telescopic mechanisms 4 are continued to be extended again, the backrest touch wall type sofa frame is changed into the lying posture from the leisure posture.
When the backrest wall-contactable sofa frame is to be changed from a sitting posture to a leisure posture, the driving device 3 drives the transmission rod 2 to rotate and simultaneously move in a direction away from the wall, the rotating transmission rod 2 drives the leg stretching component 42 to rotate, and the moving transmission rod 2 drives the connecting plate 41 to move. The first leg support bracket 43 is driven by the rotary leg stretching assembly 42 to extend, the movable 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 backrest and the wall, and preparation is made for changing the backrest wall-contactable sofa frame from a leisure posture to a lying posture, meanwhile, the movable connecting plate 41 drives the linkage assembly 44 to rotate along the hinged part hinged with the connecting plate 41, all linkage rods of the linkage assembly 44 are mutually stretched to prepare for changing the backrest wall-contactable sofa frame from the leisure posture to the lying posture, 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 backrest wall-contactable sofa frame is changed from the sitting posture to the leisure posture, the driving device 3 stops working. Specifically, the process of the leg stretching assembly 42 driving the leg first support bracket 43 to extend is that 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 and the leg seventh connecting rod 427 to rotate, one end of the rotating leg fifth connecting rod 425 rotates along the hinge joint 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, the rotating leg seventh connecting rod 427 drives the leg eighth connecting rod 428 to rotate, and the rotating leg sixth connecting rod 426 and the rotating leg eighth connecting rod 428 simultaneously drive the leg first support bracket 43 to extend.
When the backrest wall-contactable 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 first leg supporting bracket 43 keeps the extending state. The movable transmission rod 2 drives the connecting plate 41 to move continuously, the movable connecting plate 41 drives the linkage assembly 44 to rotate continuously along the hinged part hinged with the connecting plate 41, the rotary linkage assembly 44 drives the back telescopic assembly 45 to rotate, the rotary back telescopic assembly 45 drives the back support bracket 46 to extend, and after the backrest wall-contactable sofa frame is changed from a leisure posture to a lying posture, the driving device 3 stops working.
The utility model provides a can touch wall formula sofa frame by leaning on when sitting posture state, the back can paste tight wall, need not leave the distance between back and the wall, and can touch wall formula sofa frame by leaning on can follow the sitting posture and transform into leisure appearance or the appearance of lying, not only increases the pleasing to the eye that room furniture was put, can practice thrift the space moreover. And the structure and the size design of the leg stretching assembly 42 are reasonable, and the height of the leg first supporting bracket 43 from the ground is lower in the stretching state, so that the comfort level of the sofa frame and the experience of a user are improved. Under the contraction state, the structure is more compact, the occupied space is less, and the transportation is convenient.
As shown in fig. 1 to 6, 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 a 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 a second linkage rod 442, the other end of the second linkage rod 442 is hinged to the connecting plate 41, one end of a third linkage rod 443 is hinged to the middle of the first linkage rod 441, the other end of a third linkage rod 443 is hinged to one end of a fourth linkage rod 444, the other end of the fourth linkage rod 444 is hinged to one end of a fifth linkage rod 445, the other end of the fifth linkage rod 445 is hinged to the middle of the third leg connecting rod 423, the middle of the fourth linkage rod 444 is hinged to the connecting plate 41, one end of a 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 a 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 second linkage plate 449 is connected 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 telescopic assembly 45 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 backrest wall-contactable sofa frame from a sitting posture to a leisure posture, the driving device 3 drives the connecting plate 41 to move through 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 by a certain angle along a hinge part 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 towards a direction away from the wall along the hinge part hinged with 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 third connecting rod 423 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 is moved and rotated, drives the sixth linkage rod 446 to move and rotate, the sixth linkage rod 446, which is moved and rotated, drives the first linkage plate 448 to move, and meanwhile, the sixth linkage rod 446 rotates at a certain angle along a hinge joint with the first linkage plate 448. The movable first linkage plate 448 drives the seventh linkage rod 447 to rotate, and the rotatable seventh linkage rod 447 rotates towards the direction away from the wall along the hinged position hinged with the underframe 1. 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 backrest wall-contactable sofa frame from a leisure posture to a lying posture.
In the process of changing the backrest wall-contactable sofa frame 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 translate in the direction away from the wall, the transmission rod 2 is not driven to rotate, and the first leg supporting bracket 43 keeps the extending state. The translational 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 joint 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 joint with the base frame 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 the hinge portion hinged to the leg portion third connecting rod 423. 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 telescopic assembly 45 and the second linkage plate 449 to rotate at the same time, the seventh linkage rod 447 which rotates along a hinge joint with the underframe 1 in the direction away from the wall, the back telescopic assembly 45 which rotates drives the back support bracket 46 to extend, one end of the second linkage plate 449 rotates along a hinge joint 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 backrest wall-contactable 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-rest wall-contactable sofa frame to change from a resting position to a recumbent position.
As shown in fig. 1 to 6, in the present embodiment, the back extension assembly 45 includes a back first connecting rod 451, a back second connecting rod 452, a back third connecting rod 453 and a sofa support bracket 454; the back first connecting rod 451 comprises a first rod 4511 and a second rod 4512 which are integrally formed, wherein the first rod 4511 and the second rod 4512 are arranged in a crossed manner; one end of a first rod 4511 is hinged to a first linkage plate 448, the other end of the first rod 4511 is connected to one end of a second rod 4512, the other end of the second rod 4512 is hinged to a back support bracket 46, one end of a back second connection rod 452 is hinged to the first linkage plate 448, the other end of the back second connection rod 452 is hinged to the back support bracket 46, a sofa support bracket 454 is connected to the connection plate 41, one end of a back third connection rod 453 is hinged to the sofa support bracket 454, and the other end of the back third connection rod 453 is hinged to the connection position of the first rod 4511 and the second rod 4512.
In the process of changing the backrest wall-contactable sofa frame from a leisure posture to a lying posture, the first linkage plate 448 which moves and rotates drives the first back connecting rod 451 to rotate, the first back connecting rod 451 which rotates drives the back supporting bracket 46 to rotate, and the back supporting bracket 46 which rotates drives the second back connecting rod 452 to rotate along the hinged part hinged with the first linkage plate 448, so that the back supporting bracket 46 is extended. Meanwhile, in the rotating process of the back first connecting rod 451, the rotating back first connecting rod 451 drives the back third connecting rod 453 to rotate, and the back third connecting rod 453 plays a role in restraining the back first connecting rod 451, so that the back first connecting rod 451 can stably rotate. Meanwhile, the back telescopic assembly 45 is reasonable in structural and size design, so that the back support bracket 46 is closer to the ground, and the comfort level of the sofa frame and the experience of a user are improved.
As shown in fig. 1 and 8, in this embodiment, the second linking plate 449 is provided with a first hook 4491, and the first linking plate 448 is provided with a first limit protrusion 4481; when the backrest wall-contactable sofa frame is in the contracted state, the first limit bump 4481 abuts against the first hook 4491 and is used for limiting the second linkage plate 449. When the backrest wall-contactable sofa frame is in a contracted state, namely the backrest wall-contactable sofa frame is in a sitting posture state, the first limiting convex block 4481 is abutted against the first clamping hook part 4491 and used for limiting the second linkage plate 449, so that the second linkage plate 449 is prevented from contracting excessively, the linkage assembly 44 is further prevented from contracting excessively, and the structure of the linkage assembly 44 is protected.
As shown in fig. 5 and 7, in the present embodiment, the leg seventh connecting rod 427 includes a leg seventh connecting rod body 4271 and a leg second support bracket 4272 which are integrally formed, the leg seventh connecting rod body 4271 and the leg second support bracket 4272 are crosswise arranged, one end of the leg seventh connecting rod body 4271 is hinged to the leg fourth connecting rod 424, the other end of the leg seventh connecting rod body 4271 is hinged to the leg eighth connecting rod 428, and the middle part of the leg seventh connecting rod body 4271 is hinged to the middle part of the leg sixth connecting rod 426. The leg second support bracket 4272 extends or contracts with the leg seventh connecting rod body 4271, while the leg second support bracket 4272 can function to better support the leg.
As shown in fig. 1 to 4, in the present embodiment, the driving device 3 includes a slide rail 31, a slide block 32, a driving assembly 33, and two connecting members 34; the driving component 33 is installed on the bottom frame 1, the slide rail 31 is installed on the bottom frame 1, the sliding block 32 is slidably installed on the slide rail 31, and the driving component 33 is used for driving the sliding block 32 to slide along the slide rail 31; the two connecting pieces 34 are respectively positioned at two sides of the sliding block 32, one end of each connecting piece 34 is rotatably connected to the sliding block 32, and the other end of each connecting piece 34 is hinged to the transmission rod 2; the sliding slide 32 drives the drive rod 2 in rotation and/or movement via two connecting pieces 34. The connecting member 34 includes a connecting arm 341 and an ear frame 342, the connecting arm 341 includes a first connecting block 343 and a second connecting block 344 connected to the first connecting block 343, and the first connecting block 343 and the second connecting block 344 are arranged in an intersecting manner; the lug support 432 is connected to the transmission rod 2, one end of the first connecting block 343 is hinged to the sliding block 32, and one end of the second connecting block 344 away from the first connecting block 343 is hinged to the lug support 342.
The movement of the transmission rod 2 is divided into two stages, the first movement stage is that the transmission rod 2 rotates and moves, namely the stage that the backrest can touch the wall type sofa frame to change from the sitting posture to the leisure posture. Specifically, the driving assembly 33 drives the sliding block 32 to slide along the sliding rail 31, the sliding block 32 drives the transmission rod 2 to move via the two connecting pieces 34, meanwhile, in the sliding process of the sliding block 32, one end of the first connecting block 343 rotates along the hinge joint with the sliding block 32, the rotating first connecting block 343 drives the second connecting block 344 to rotate together, the rotating second connecting block 344 drives the lug support 342 to rotate together, and the transmission rod 2 rotates along with the lug support 342.
In the second movement stage, the driving rod 2 only moves but does not rotate, namely the stage of changing the backrest of the sofa frame from the leisure position to the lying position. Specifically, the driving assembly 33 continues to drive the sliding block 32 to slide along the sliding rail 31, and the sliding block 32 drives the transmission rod 2 to move through the two connecting pieces 34. In the sliding process of the sliding block 32, one end of the first connecting block 343 rotates along the hinge joint with the sliding block 32, the rotating first connecting block 343 drives the second connecting block 344 to rotate together, the rotating second connecting block 344 rotates along the hinge joint with the lug support 342, but the rotating second connecting block 344 does not drive the lug support 342 to rotate.
The driving device 3 has simple structure and ingenious design, so that the transmission rod 2 can realize two motion states, and provides driving force for the back-to-wall touch type sofa frame to be changed from the sitting posture to the leisure posture and for the back-to-wall touch type sofa frame to be changed from the leisure posture to the lying posture.
As shown in fig. 2, in this embodiment, a plurality of transverse connecting rods 5 are connected between two of the folding telescopic mechanisms 4, one end of each transverse connecting rod 5 is connected to one of the folding telescopic mechanisms 4, and the other end of each transverse connecting rod 5 is connected to the other folding telescopic mechanism 4. A plurality of transverse connecting rods 5 are connected between the two folding telescopic mechanisms 4, so that the motion continuity between the two folding telescopic mechanisms 4 is increased, the two folding telescopic mechanisms 4 are ensured to be synchronously telescopic, and the stability of the service performance of the wall-contactable sofa frame is ensured.
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 (8)
1. The utility model provides a structure improvement lean against can touch wall formula 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 with the bottom frame; the two folding telescopic mechanisms are respectively arranged at two ends of the transmission rod and are symmetrically arranged, and the driving device drives 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 assembly, a leg first support bracket, a linkage assembly, a back telescopic assembly and a back support 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 protrude out of 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 first 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 respectively hinged with the connecting plate, the leg telescopic assembly and the back telescopic assembly;
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, a leg sixth connecting rod, a leg seventh connecting rod and a leg eighth connecting rod; one end of the first leg connecting rod is connected to the part of the transmission rod, which protrudes out of the connecting plate, the other end of the first leg connecting rod is hinged to one end of the second leg connecting rod, the other end of the second leg connecting rod is hinged to the middle of the third leg connecting rod, one end of the third leg connecting rod is hinged to the connecting plate, the other end of the third leg connecting rod is hinged to one end of the fourth leg connecting rod, the other end of the fourth leg connecting rod is hinged to one end of the seventh leg connecting rod, the other end of the seventh leg connecting rod is hinged to one end of the eighth leg connecting rod, and the other end of the eighth leg connecting rod is; one end of the fifth leg connecting rod is hinged to the connecting plate, the other end of the fifth leg connecting rod is hinged to one end of the sixth leg connecting rod, the other end of the sixth leg connecting rod is hinged to the first leg bearing bracket, the middle of the fifth leg connecting rod is hinged to the middle of the fourth leg connecting rod, and the middle of the sixth leg connecting rod is hinged to the middle of the seventh leg connecting rod.
2. The sofa frame with an improved structure and a back-to-back wall contactable type as claimed in 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 the first linkage rod is hinged to the underframe, the other end of the first linkage rod is hinged to one end of the second linkage rod, the other end of the second linkage rod is hinged to the connecting plate, one end of the 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 the fourth linkage rod, the other end of the fourth linkage rod is hinged to one end of the fifth linkage rod, the other end of the fifth linkage rod is hinged to the middle of the third connecting rod of the leg, the middle of the fourth linkage rod is hinged to the connecting plate, one end of the 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 the seventh linkage rod is hinged to the underframe, the other end of the seventh linkage rod is hinged to the first linkage plate, the back telescopic assembly 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 telescopic assembly and the first linkage plate and
the hinged parts of the second linkage plate and the first linkage plate are arranged at intervals.
3. The sofa frame with an improved structure and a back-to-back wall contactable type as claimed in claim 2, wherein: the back telescopic assembly comprises a back first connecting rod, a back second connecting rod, a back third connecting rod and a sofa support bracket; the back first connecting rod comprises a first rod and a second rod which are integrally formed, and the first rod and the second rod are arranged in a crossed mode; the one end of first pole articulates in first ganged plate, and the other end of first pole is connected in the one end of second pole, and the other end of second pole articulates in back support bracket, and the one end of back second connecting rod articulates in first ganged plate, and the other end of back second connecting rod articulates in back support bracket, and sofa support bracket connects in the connecting plate, and the one end of back third connecting rod articulates in sofa support bracket, and the other end of back third connecting rod articulates in the junction of first pole and second pole.
4. The sofa frame with an improved structure and a back-to-back wall contactable type as claimed in claim 2, wherein: the second linkage plate is provided with a first clamping hook part, and the first linkage plate is provided with a first limiting bump; when the backrest wall-contactable sofa frame is in a contraction state, the first limiting lug props against the first clamping hook part and is used for limiting the second linkage plate.
5. The sofa frame with an improved structure and a back-to-back wall contactable type as claimed in claim 1, wherein: the leg seventh connecting rod comprises an integrally formed leg seventh connecting rod body and a leg second bearing bracket, the leg seventh connecting rod body and the leg second bearing bracket are arranged in a crossed mode, one end of the leg seventh connecting rod body is hinged to the leg fourth connecting rod, the other end of the leg seventh connecting rod body is hinged to the leg eighth connecting rod, and the middle of the leg seventh connecting rod body is hinged to the middle of the leg sixth connecting rod.
6. The sofa frame with an improved structure and a back-to-back wall contactable type as claimed in claim 1, wherein: the driving device comprises a slide rail, a slide block, a driving assembly and two connecting pieces; the driving assembly is arranged on the bottom frame, the sliding rail is arranged on the bottom frame, the sliding block is arranged on the sliding rail in a sliding manner, and the driving assembly is used for driving the sliding block to slide along the sliding rail; the two connecting pieces are respectively positioned on two sides of the sliding block, one end of each connecting piece is rotatably connected to the sliding block, and the other end of each connecting piece is hinged to the transmission rod; the sliding slide block drives the transmission rod to rotate and/or move through the two connecting pieces.
7. The improved back-to-wall touchable sofa frame as set forth in claim 6, wherein: the connecting piece comprises a connecting arm and a lug support, the connecting arm comprises a first connecting block and a second connecting block connected to the first connecting block, and the first connecting block and the second connecting block are arranged in a crossed mode; the lug support is connected to the transmission rod, one end of the first connecting block is hinged to the sliding block, and one end, far away from the first connecting block, of the second connecting block is hinged to the lug support.
8. The sofa frame with an improved structure and a back-to-back wall contactable type as claimed in claim 1, wherein: two be connected with a plurality of transverse connecting rods between the folding telescopic machanism, transverse connecting rod's one end is connected in a folding telescopic machanism, and transverse connecting rod's the other end is connected in another folding telescopic machanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625795.3U CN210008763U (en) | 2019-04-30 | 2019-04-30 | Backrest wall-contactable sofa frame with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625795.3U CN210008763U (en) | 2019-04-30 | 2019-04-30 | Backrest wall-contactable sofa frame with improved structure |
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| Publication Number | Publication Date |
|---|---|
| CN210008763U true CN210008763U (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920625795.3U Active CN210008763U (en) | 2019-04-30 | 2019-04-30 | Backrest wall-contactable sofa frame with improved structure |
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| CN (1) | CN210008763U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114869090A (en) * | 2022-05-06 | 2022-08-09 | 东莞市瑞豪家具制造有限公司 | Structure improved chair frame |
| CN115606959A (en) * | 2022-08-23 | 2023-01-17 | 顾家家居股份有限公司 | Zero back rubbing compact sofa iron frame structure |
-
2019
- 2019-04-30 CN CN201920625795.3U patent/CN210008763U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114869090A (en) * | 2022-05-06 | 2022-08-09 | 东莞市瑞豪家具制造有限公司 | Structure improved chair frame |
| WO2023213013A1 (en) * | 2022-05-06 | 2023-11-09 | 东莞市瑞豪家具制造有限公司 | Seat frame having improved structure |
| CN115606959A (en) * | 2022-08-23 | 2023-01-17 | 顾家家居股份有限公司 | Zero back rubbing compact sofa iron frame structure |
| CN115606959B (en) * | 2022-08-23 | 2024-05-24 | 顾家家居股份有限公司 | Zero back rubbing compact sofa iron frame structure |
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Effective date of registration: 20230221 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. |