Double drive multi-posture sofa bed

Abstract

The application discloses a double-driving multi-posture sofa bed. The double-driving multi-posture sofa bed comprises a sofa frame, a cushion and a backrest, the sofa frame is movably connected with the cushion through an extension mechanism, the sofa frame is movably connected with the backrest through a turnover mechanism, the turnover mechanism comprises turnover assemblies installed on two sides of the sofa frame, a through space of the cushion is left between the two turnover assemblies, the turnover assembly comprises a connecting rod one, the bottom end of the connecting rod one is pivotally connected with the middle part of the sofa frame, the middle part of the connecting rod one is pivotally connected with a connecting rod two, the top end of the connecting rod two is pivotally connected with a backrest mounting piece, the backrest mounting piece is pivotally connected with a connecting rod three, the top end of the connecting rod three is pivotally connected with the backrest mounting piece, the bottom end of the connecting rod three is pivotally connected with the connecting rod one, the bottom part of the connecting rod two is pivotally connected with a connecting rod four, the middle part of the connecting rod four is pivotally connected with the rear part of the sofa frame, and the sofa frame is provided with a backrest driving mechanism connected with the connecting rod four. The application solves the problem that the prior art is difficult to meet the multi-purpose use requirement of users.

Description

Technical Field

[0001] This invention relates to the field of furniture manufacturing technology, and in particular to a dual-drive multi-position sofa bed. Background Technology

[0002] An existing Chinese invention patent application, with application number 2026202052507 and titled "An Extended, Fully Retractable Sofa Bed with No Wall Support," adds a leg linkage mechanism to the front of the seat frame and uses a long connecting rod to link the leg linkage mechanism with the backrest linkage mechanism. However, it can only achieve two states: sitting and reclining, which is insufficient to meet the multi-purpose needs of users. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a dual-drive multi-position sofa bed that can meet the multi-purpose needs of users.

[0004] To achieve the above objectives, the technical solution adopted by the dual-drive multi-posture sofa bed of the present invention is as follows:

[0005] A dual-drive multi-position sofa bed includes a sofa frame, a seat cushion, and a backrest. The sofa frame and the seat cushion are movably connected via a telescopic mechanism, and the sofa frame and the backrest are movably connected via a flipping mechanism. The flipping mechanism includes flipping components installed on both sides of the sofa frame, with a passage space for the seat cushion between the two flipping components. Each flipping component includes a first link, the bottom end of which is pivotally connected to the middle of the sofa frame. The middle of the first link is pivotally connected to a second link, the top end of which is pivotally connected to a backrest mounting component. The backrest mounting component is pivotally connected to a third link, the top end of which is pivotally connected to the backrest mounting component, and the bottom end of which is pivotally connected to the first link. Links one, two, and three, along with the backrest mounting component, constitute a four-bar linkage. The bottom of the second link is pivotally connected to a fourth link, the middle of which is pivotally connected to the rear of the sofa frame. The sofa frame is equipped with a backrest drive mechanism connected to the fourth link.

[0006] Preferably, the sofa frame includes two armrests, and a support frame is provided between the lower parts of the two armrests. The telescopic mechanism, the flipping mechanism, and the backrest drive mechanism are mounted on the support frame.

[0007] Preferably, the telescopic mechanism includes a seat frame for mounting the seat cushion, and two sliding members are provided on both sides of the seat frame. The sliding members are slidably fitted with guide rails that are fixedly connected to the support frame.

[0008] Preferably, the telescopic mechanism further includes a seat cushion driving mechanism, which includes a slider-type push rod motor hinged to the rear side of the support frame. The top surface of the slider of the slider-type push rod motor is fixedly connected to a seat cushion driving rod, and the two ends of the seat cushion driving rod are respectively connected to a sliding member.

[0009] Preferably, the first sliding member is installed on the rear side of the seat frame, and the second sliding member is provided on both sides of the middle part of the seat frame. The second sliding member is slidably connected to the guide rail. A front baffle is provided on the front side of the seat cushion, and several grounding rollers are provided at the bottom of the front baffle.

[0010] Preferably, the backrest drive mechanism includes a linear push rod motor hinged to the middle of the support frame, and the telescopic rod of the linear push rod motor is hinged to the backrest drive rod, with both ends of the backrest drive rod connected to the bottom end of the connecting rod four.

[0011] Preferably, the top end of the first connecting rod is provided with an extension, and a support rod is provided between the extensions on both sides.

[0012] Preferably, a limit pin is provided on the first connecting rod, which abuts against the second connecting rod to limit the maximum angle at which the backrest flips upward.

[0013] Preferably, a limit pin two is provided on the fourth link, which abuts against the second link to limit the maximum angle at which the backrest flips downward.

[0014] Preferably, the first connecting rod is also provided with a limit pin three. When the backrest is flipped upward to the maximum angle, the limit pin three abuts against the second connecting rod. When the backrest is flipped downward to the minimum angle, the limit pin three abuts against the third connecting rod.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The sofa frame and seat cushion are connected by a telescopic mechanism, and the sofa frame and backrest are connected by a flipping mechanism, allowing the seat cushion and backrest to move separately. Space is provided between the flipping components on both sides for the seat cushion to extend. The extended seat cushion is then passed under the backrest via the telescopic mechanism, forming a seat for a sitting position. When the seat cushion is fully extended via the telescopic mechanism, the backrest and seat cushion form a chaise lounge for a reclining position. The backrest angle can then be adjusted via the flipping mechanism to a comfortable angle for the user. When the backrest is laid flat, the backrest and seat cushion form a bed for a supine position, thus meeting the user's multi-purpose needs.

[0017] 2. The seat is lengthened by increasing its own length. Compared with lengthening by adding a leg linkage mechanism, the reliability and safety are both enhanced.

[0018] 3. When the seat cushion is fully extended, a portion of its rear end needs to be inserted under the backrest to avoid exposing the gap between the backrest and the seat cushion and affecting the aesthetics. Therefore, a swing-type flipping mechanism consisting of linkages one, two, and three and the backrest mounting parts is used to achieve a perfect splicing of the backrest and the seat cushion. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the sitting posture of the dual-drive multi-posture sofa bed of the present invention.

[0020] Figure 2 This is a side view of the dual-drive multi-posture sofa bed of the present invention in a sitting posture state (with one armrest hidden).

[0021] Figure 3 This is a side view of the dual-drive multi-posture sofa bed of the present invention in a reclining state (with one armrest hidden).

[0022] Figure 4 This is a side view of the dual-drive multi-posture sofa bed of the present invention in a large-angle reclining state (with one side armrest hidden).

[0023] Figure 5 This is a side view of the dual-drive multi-posture sofa bed of the present invention in a lying position (with one armrest hidden).

[0024] Figure 6 This is a structural diagram of a sofa frame.

[0025] Figure 7 This is a schematic diagram of the flipping mechanism.

[0026] Figure 8 This is a schematic diagram of the telescopic mechanism.

[0027] Figure 9 This is a structural diagram of the backrest mounting components.

[0028] Figure 10 This is a structural schematic diagram of slider one.

[0029] Figure 11 This is a schematic diagram of the second sliding component.

[0030] Among them, 1 is the sofa frame, 11 is the armrest, 12 is the support frame, 121 is the guide rail, 13 is the back panel, 2 is the seat cushion, 21 is the front panel, 22 is the ground roller, 3 is the backrest, 4 is the telescopic mechanism, 41 is the seat frame, 42 is the first sliding component, 421 is the first wheel frame, 422 is the first roller, 43 is the second sliding component, 431 is the second wheel frame, 432 is the second roller, 44 is the seat cushion drive mechanism, 441 is the slider-type push rod motor, 442 is the seat cushion drive rod, and 5 is the flip mechanism. Mechanism, 51 Flip assembly, 511 Link 1, 5111 Extension, 5112 Limit pin 1, 5113 Limit pin 3, 512 Link 2, 513 Link 5, 5131 Boss 1, 514 Link 6, 5141 Boss 2, 515 Link 3, 516 Link 4, 5161 Limit pin 2, 52 Support rod, 53 Backrest drive mechanism, 531 Inline push rod motor, 532 Backrest drive rod. Detailed Implementation

[0031] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0032] like Figure 1-11As shown, a dual-drive multi-position sofa bed includes a sofa frame 1, a seat cushion 2, and a backrest 3. The sofa frame 1 includes two armrests 11, a support frame 12 is installed between the lower parts of the two armrests 11, and a back panel 13 is installed between the rear sides of the two armrests 12. The back panel 13 can increase the strength of the sofa frame 1 and also cover the support frame 12, increasing aesthetics. The support frame 12 and the seat cushion 2 are movably connected by a telescopic mechanism 4. The telescopic mechanism 4 includes a seat frame 41 for mounting the seat cushion 2. Sliding parts 42 are installed on both sides of the rear of the seat frame 41. The sliding parts 42 are slidably fitted with guide rails 121 fixed to the support frame 12. The sliding parts 42 include wheel frames 421 fixed to the rear of the seat frame 41. The wheel frames 421 are equipped with two rollers 422 that roll along the guide rails 121. The seat frame 41 has two sliding parts 43 installed on both sides of its middle section. Each sliding part 43 includes a wheel frame 431 fixed to the middle of the seat frame 41. The wheel frame 431 is equipped with two rollers 432 that roll along the guide rail 121. A front baffle 21 is installed on the front side of the seat cushion 2. Two grounding rollers 22 are installed at the bottom of the front baffle 21. The grounding rollers 22, rollers 432, and rollers 422 provide even support to the seat cushion 2 from front to back, ensuring that the seat cushion 2 is firm and reliable when bearing external forces and has high safety. The telescopic mechanism 4 also includes a seat cushion drive mechanism 44. The seat cushion drive mechanism 44 includes a slider-type push rod motor 441 hinged to the rear side of the support frame 12. The top surface of the slider of the slider-type push rod motor 441 is fixed to the seat cushion drive rod 442. The two ends of the seat cushion drive rod 442 are respectively connected to the wheels. The support frame 12 and the backrest 3 are connected via a flipping mechanism 5. The flipping mechanism 5 includes flipping components 51 installed on both sides of the support frame 12, with a passage space for the seat cushion 2 between the two flipping components 51. Each flipping component 51 includes a connecting rod 1 511, the bottom end of which is pivotally connected to the middle of the support frame 12, and the middle of which is pivotally connected to a connecting rod 2 512. The top end of the connecting rod 2 512 is pivotally connected to a backrest mounting component. The backrest mounting component includes a connecting rod 513 and a connecting rod 6 514. The connecting rod 6 514 is used to mount the backrest 2. One side of the connecting rod 513 is pivotally connected to the connecting rod 2 512, and the other side is pivotally connected to a connecting rod 3 515. The top end of the connecting rod 3 515 is pivotally connected to the connecting rod 513, and the bottom end of the connecting rod 3 515 is connected to the connecting rod 1 511. The pivotal connections of links 1, 2, 3, and link 5 form a four-bar linkage. One end of link 513 is bent into boss 1 5131, and one end of link 6 514 is bent into boss 2 5141. Bosses 1 5131 and 2 5141 are bolted together to fix link 513 and link 6 514 into a single unit. A certain height difference needs to be formed between link 513 and link 6 514 to ensure that the backrest does not affect the shape change of the four-bar linkage. The backrest mounting component is divided into two parts, link 5 and link 6, to reduce manufacturing difficulty, and the height difference is distributed between the two parts, which also improves the overall strength of the backrest mounting component. The bottom of link 2 512 is pivotally connected to link 4 516, and the middle of link 4 516 is pivotally connected to the rear of support frame 12.The top of the connecting rod 1 511 has an integrally formed extension 5111, and a support rod 52 is installed between the extensions on both sides. The support rod 52 improves the synchronicity of the movement of the two flipping components. Limiting pin 1 5112 and limiting pin 3 5113 are installed on the connecting rod 1 511. Limiting pin 1 5112 abuts against connecting rod 2 512, limiting the maximum angle of the backrest 3 flipping upward. At this time, limiting pin 3 5113 also abuts against connecting rod 2 512, improving the stability of the backrest in the sitting position. Limiting pin 2 5161 is installed on the connecting rod 4 516. Link 5161 engages with connecting rod 512, limiting the maximum downward tilt angle of the backrest 3. At this time, limit pin 5113 also engages with connecting rod 515 to prevent the four-bar linkage from exceeding its range of motion and jamming. Support frame 12 is equipped with backrest drive mechanism 53 connected to connecting rod 516. Backrest drive mechanism 53 includes a linear push rod motor 531 hinged to the middle of support frame 12. The telescopic rod of linear push rod motor 531 is hinged to backrest drive rod 532. Both ends of backrest drive rod 532 are connected to the bottom end of connecting rod 516.

[0033] The specific working process and principle of this invention:

[0034] Start the inline push rod motor 531. The telescopic rod of the inline push rod motor 531 extends. The backrest drive rod 532 drives the fourth link 516 to rotate clockwise. The fourth link 516 drives the four-bar linkage mechanism. The four-bar linkage mechanism changes shape to support the backrest 3 until the first limit pin 5112 and the third limit pin 5113 respectively abut against the second link 512. Then start the slider push rod motor 441. The slider of the slider push rod motor 441 drives the seat frame 41 to move backward through the seat cushion drive rod 442. The rear side of the seat cushion 2 passes through the bottom of the backrest 3 until the front side of the seat cushion 2 is flush with the front side of the armrest 11. At this time, the seat cushion 2 and the backrest 3 constitute the seat and realize the sitting posture.

[0035] In the seated position, the slider-type push rod motor 441 is activated. The slider of the slider-type push rod motor 441 drives the seat frame 41 forward through the seat cushion drive rod 442. The rear side of the seat cushion 2 passes through the bottom of the backrest 3 until the seat cushion 2 is fully extended (the rear end of the seat cushion is still under the backrest to avoid large cracks that would affect the aesthetics). The backrest 3 and the seat cushion 2 then form a "chaise lounge", realizing the reclining position.

[0036] In the reclining position, the inline push rod motor 531 is activated, the telescopic rod of the inline push rod motor 531 retracts, the backrest drive rod 532 drives the fourth link 516 to rotate counterclockwise, the fourth link 516 drives the four-bar linkage mechanism, the four-bar linkage mechanism changes shape and reclines the backrest 3, and the user can stop the backrest 3 at a certain comfortable angle as needed, realizing a large-angle reclining position.

[0037] In a large-angle reclining position, the inline push rod motor 531 is activated, and the telescopic rod of the inline push rod motor 531 is further retracted until the backrest 3 is completely reclined. The backrest 3 and the seat cushion 2 form a bed, achieving a flat reclining state.

[0038] The present invention leaves space between the flipping components 51 on both sides for the cushion 2 to pass through, thus making full use of the space behind the backrest 3 as a hiding space for the extended part of the cushion 2. Under the action of the flipping mechanism 5, the backrest 3 and the cushion 2 are spliced ​​together to form different shapes, thereby meeting the user's multi-purpose use needs and improving the user experience.

Claims

1. A dual-drive multi-position sofa bed, comprising a sofa frame, a seat cushion, and a backrest, characterized in that: The sofa frame and seat cushion are movably connected via a telescopic mechanism, and the sofa frame and backrest are movably connected via a flipping mechanism. The flipping mechanism includes flipping components installed on both sides of the sofa frame, with a passage space for the seat cushion between the two flipping components. Each flipping component includes a first connecting rod, the bottom end of which is pivotally connected to the middle of the sofa frame. The middle of the first connecting rod is pivotally connected to a second connecting rod, the top end of which is pivotally connected to a backrest mounting component. The backrest mounting component is pivotally connected to a third connecting rod, the top end of which is pivotally connected to the backrest mounting component, and the bottom end of which is pivotally connected to the first connecting rod. The first, second, and third connecting rods and the backrest mounting component constitute a four-bar linkage. The bottom of the second connecting rod is pivotally connected to a fourth connecting rod, the middle of which is pivotally connected to the rear of the sofa frame. The sofa frame is equipped with a backrest drive mechanism connected to the fourth connecting rod.

2. The dual-drive multi-position sofa bed according to claim 1, characterized in that: The sofa frame includes two armrests, and a support frame is provided between the lower parts of the two armrests. The telescopic mechanism, the flipping mechanism, and the backrest drive mechanism are mounted on the support frame.

3. The dual-drive multi-position sofa bed according to claim 2, characterized in that: The telescopic mechanism includes a seat frame for mounting the seat cushion, and two sliding members are provided on both sides of the seat frame. The sliding members are slidably fitted with guide rails that are fixedly connected to the support frame.

4. The dual-drive multi-position sofa bed according to claim 3, characterized in that: The telescopic mechanism also includes a seat cushion drive mechanism, which includes a slider-type push rod motor hinged to the rear side of the support frame. The top surface of the slider of the slider-type push rod motor is fixedly connected to a seat cushion drive rod, and the two ends of the seat cushion drive rod are respectively connected to a sliding member.

5. The dual-drive multi-posture sofa bed according to claim 4, characterized in that: The first sliding member is installed on the rear side of the seat frame, and the second sliding member is provided on both sides of the middle part of the seat frame. The second sliding member is slidably connected to the guide rail. A front baffle is provided on the front side of the seat cushion, and several grounding rollers are provided at the bottom of the front baffle.

6. The dual-drive multi-position sofa bed according to claim 2, characterized in that: The backrest drive mechanism includes a linear push rod motor hinged to the middle of the support frame. The telescopic rod of the linear push rod motor is hinged to the backrest drive rod, and the two ends of the backrest drive rod are respectively connected to the bottom end of the connecting rod four.

7. The dual-drive multi-position sofa bed according to claim 1, characterized in that: The top end of the first connecting rod is provided with an extension, and a support rod is provided between the two extensions.

8. The dual-drive multi-position sofa bed according to claim 1, characterized in that: A limit pin is provided on the first connecting rod. The limit pin abuts against the second connecting rod, limiting the maximum angle at which the backrest flips upward.

9. The dual-drive multi-posture sofa bed according to claim 8, characterized in that: The fourth link is provided with a limit pin two, which abuts against the second link to limit the maximum angle at which the backrest flips downward.

10. The dual-drive multi-position sofa bed according to claim 9, characterized in that: The first connecting rod is also provided with a limit pin three. When the backrest is flipped upward to the maximum angle, the limit pin three abuts against the second connecting rod. When the backrest is flipped downward to the minimum angle, the limit pin three abuts against the third connecting rod.

Images