Sofa frame with weightlessness and zero wall support
Patent Information
- Application Number
- DE202025100215
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2024-12-12
- Filing Date
- 2025-01-16
- Publication Date
- 2025-03-06
- Estimated Expiration
- 2035-01-31
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical FieldThe present invention relates to a sofa frame and more particularly to a sofa frame having zero gravity and zero wall appearance.Background ArtCurrently, some zero gravity, zero wall type sofa racks adopt a drive mechanism to connect the seat rack and the footrest assembly. When converting from a seating position to a reclining position, the drive mechanism drives the footrest assembly to extend and drives the seat frame to move forward and upward relative to the base, presents a no-gravity condition, and simultaneously drives the backrest assembly to move forward to remain away from the wall in the rear region, thus realizing the effect of the null wall leaning.To meet the moving habits of the human body and to provide the user with a better feel of experience, when converting the sofa frame from a seated position to a reclining position, the footrest assembly should first be extended and then the seat frame moved forwardly and upwardly; conversely, when converting the sofa frame from a reclining to a seated position, the seat frame should be moved rearwardly and downwardly before the footrest assembly is contracted.However, most sofa racks use a single drive mechanism to drive the seat rack and the footrest simultaneously, so that the extension and contraction of the footrest and the movement of the seat rack are synchronized and the action of the footrest and the seat rack cannot be performed separately.Content of the Utility ModelIn order to overcome the deficiencies and deficiencies existing in the prior art, the purpose of the present invention is to design a sofa stand with zero gravity and zero wall leaning so that the effect of foot rest and seat stand can be performed separately, thereby improving user experience.To achieve the above purpose, the present invention provides a sofa frame with zero gravity and zero wall leaning, wherein the sofa frame can be transformed between a seating state and a reclining state, comprising:a base;a sofa stand, wherein the seat stand is movably arranged on the base,a first driving mechanism configured to drive the seat frame to move forward and backward relative to the base, the first driving mechanism being disposed on the base;a backrest assembly convertible between upright and inclined states, wherein the base and the seat frame are hinged to the backrest assembly, wherein when the seat frame moves forwardly relative to the base, the backrest assembly is converted from the upright state to the inclined state, and when the seat frame moves rearwardly relative to the base, the backrest assembly is converted from the inclined state to the upright state;a footrest assembly convertible between contracted and extended states; anda push rod, wherein the seat frame and the push rod are hinged to the foot support assembly, wherein when the push rod moves forward relative to the seat frame, the foot support assembly is transformed from the contracted state to the extended state, and when the push rod moves backward relative to the seat frame, the foot support assembly is transformed from the extended state to the contracted state; characterized in that the sofa frame further comprises:a second drive mechanism, the second drive mechanism being drivingly connected to the push rod to drive the push rod to reciprocate relative to the seat frame.Wherein, by providing the sofa frame with a first drive mechanism and a second drive mechanism, during the conversion state of the sofa frame, the footrest assembly and the seat frame can be moved, respectively. For example, when the sofa frame is converted from the seating state to the reclining state, the footrest assembly is first extended, the seat frame is moved forward and the backrest assembly is simultaneously tilted, and when the sofa frame is converted from the reclining state to the seating state, the seat frame is first moved rearward, the backrest assembly is simultaneously upright and the footrest assembly is contracted, so that the overall effect of the sofa more matches the human body's operating habits and allows the user a better experience.Further, the first driving mechanism is a linear module including a module motor, a module rail, and a module slider, wherein the module rail is disposed along the front and rear directions, the module slider is movably disposed on the module rail, the module rail is provided with a gear assembly, the module motor is connected to the module slider through the gear assembly to drive the module slider to reciprocate, and the module slider is fixedly connected to the seat frame. Wherein the module motor drives the module slider to move on the module rail through the gear assembly, thereby bringing the seat frame into motion.Moreover, the base is provided with two rails disposed left and right relative to each other, and the seat frame is provided with at least two guide blocks disposed left and right relative to each other, the two guide blocks being respectively slidably fitted with the two rails. The rail is configured to guide the movement of the guide block, so that the movement of the seat frame is more stable.Moreover, the rail is V-shaped, the rear portion of the rail is horizontally disposed, and the front portion of the rail is inclined from rear to front upward; the seat frame is provided with at least four guide blocks, four guide blocks are arranged in pairs at left and right relative to each other, and the two guide blocks located at the left side are respectively slidably fitted with the front portion and the rear portion of the rail located at the left side, and the two guide blocks located at the right side are respectively slidably fitted with the front portion and the rear portion of the rail located at the right side. The seat frame can be moved forward and upward by the guide of the rail, so that the human body is more comfortable in support.Moreover, the second driving mechanism is an electric telescopic rod, wherein the motor of the electric telescopic rod is disposed on the seat frame, and the rod body of the electric telescopic rod is hinged to the push rod. The user has a higher degree of freedom in the selection of the action sequence, since the first drive mechanism and the second drive mechanism are both sources of force.Moreover, the second driving mechanism is a driving rod, the first driving mechanism is drivingly connected to the rear end of the driving rod to drive the driving rod to reciprocate, and the front end of the driving rod is linked to the driving rod. Wherein, the action of the sofa frame is performed in accordance with the action sequence conforming to the human action habits, since the second driving mechanism is driven by the first driving mechanism, and the cost is lower.Moreover, the drive rods are made of two pieces, the two drive rods being arranged relative to each other on the left and right. Two driving rods, which are arranged on the left and right relative to each other, can more evenly balance the force supply and the effect of the sofa frame is more stable.In addition, the module slide is articulated with the rear end of the drive rod. Wherein, during movement of the drive rod, the drive rod rotates relative to the module slide to cooperate with the action of the seat frame moving forward and upward.Moreover, the footrest assembly is made up of two pieces, the two footrest assemblies being arranged to the left and right relative to each other. By arranging two footrest arrangements arranged relative to one another on the left and right, the sofa footrest can be set in motion more stably.In addition, the footrest assembly includes: a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod, a sixth support rod, a seventh support rod, a support frame, and a pendulum rod, wherein the starting end of the first support rod and the starting end of the fifth support rod are hinged to the seat frame, the starting end of the second support rod is hinged to the driven end of the first support rod, the starting end of the third support rod is hinged to the driven end of the second support rod, the starting end of the fourth support rod is hinged to the driven end of the third support rod, the starting end of the sixth support rod is hinged to the driven end of the fifth support rod, the starting end of the seventh support rod is hinged to the driven end of the sixth support rod, the second support rod is provided with the rear support point of the support rod and the front support point of the support rod, the rear support point of the support rod is hinged to the central part of the fifth support rod, the starting end of the support frame is hinged to the front support point of the support rod, the starting end of the pendulum rod is hinged to the driven end of the support frame, the driven end of the pendulum rod is hinged to the central part of the sixth support rod, and the fourth support rod is hinged to the central part of the seventh support rod. Wherein the footrest assembly can be applied to a long length of the sofa footrest.Moreover, the third support rod, the seventh support rod, and the support frame are all provided with support plates, and when the foot support assembly is in the extended state, the support plate of the third support rod, the support plate of the seventh support rod and the support plate of the support frame are flush with each other. Wherein the support plate of the third support rod, the support plate of the seventh support rod and the support plate of the support frame are all configured to support the sofa footrest.In addition, the footrest assembly includes: a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod, a sixth support rod, and a seventh support rod, wherein the start end of the first support rod and the start end of the fifth support rod are hinged to the seat frame, the start end of the second support rod is hinged to the driven end of the first support rod, the start end of the third support rod is hinged to the driven end of the second support rod, the start end of the fourth support rod is hinged to the driven end of the third support rod, the start end of the sixth support rod is hinged to the driven end of the fifth support rod, the start end of the seventh support rod is hinged to the driven end of the sixth support rod, the central portion of the second support rod is hinged to the central portion of the fifth support rod, the central portion of the third support rod is hinged to the central portion of the sixth support rod, and the driven end of the fourth support rod is hinged to the central portion of the seventh support rod. In this case, the footrest arrangement can be applied to the footrest of the sofa with a short length.Moreover, the third support rod, the seventh support rod, and the support frame are all provided with support plates, and when the foot support assembly is in the extended state, the support plate of the third support rod, the support plate of the seventh support rod, and the support plate of the support frame are flush with each other. Wherein the support plate of the third support rod and the support plate of the seventh support rod are configured to support the sofa footrest.Moreover, the backrest assemblies consist of two pieces and the two backrest assemblies are arranged on the left and right relative to each other. By arranging two backrest components arranged on the left and right relative to one another, the backrest of the sofa can be set in movement more stably.In addition, the seat back assembly includes: a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, and the seat back member, wherein the first connecting rod is fixed to the seat frame, the first connecting rod is provided with a front support point of the connecting rod and a rear support point of the connecting rod, the start end of the second connecting rod is linked to the front support point of the connecting rod, the start end of the third connecting rod is linked to the rear support point of the connecting rod, the start end of the fourth connecting rod is linked to the driven end of the third connecting rod, the driven end of the fourth connecting rod is linked to the base, the third connecting rod is provided with the upper support point of the connecting rod and the lower support point of the connecting rod, the connecting line of the upper support point of the connecting rod, the starting end of the third connecting rod and the lower support point of the connecting rod is L-shaped, the starting end of the fifth connecting rod is hinged to the middle part of the second connecting rod, the driven end of the fifth connecting rod is hinged to the upper support point of the connecting rod, the driven end of the sixth connecting rod is hinged to the lower support point of the connecting rod, and the backrest member is provided with a front support point of the backrest and a rear support point of the backrest, the driven end of the second connecting rod is hinged to the front support point of the backrest, and the starting end of the sixth connecting rod is hinged to the rear support point of the backrest. Wherein the backrest assembly can change the support angle with movement of the seat frame.In addition, the sofa frame further comprises: a cushion member, wherein the base and the seat frame are both connected to the cushion member to apply a rearward force to the seat frame. Wherein, the rearward force is transmitted to the seat frame through the damper, so that it can be ensured that the seat frame acts in an order corresponding to the action habits of the human body.Moreover, the damper is a tension spring, the base and the seat frame are fixedly connected to both ends of the tension spring, respectively, and the tension spring exerts a rearward force on the seat frame. Wherein, the tension spring is stretched as the seat frame moves forward relative to the base, and as the seat frame moves backward relative to the base, the tension spring is reset.In addition, the damping elements consist of two pieces and the two damping elements are arranged on the left and right relative to one another. Two damping elements, which are arranged on the left and right relative to one another, can more uniformly balance the provision of force and the effect of the sofa frame is more stable.Illustration of the Accompanying DrawingsFIG. 1 is a schematic diagram of the sofa frame in the seating state to which Embodiment 1 relates; FIG. 2 is a schematic diagram of the sofa rack in the half state to which Embodiment 1 relates; FIG. 3 is a schematic diagram of the sofa frame in the lying state to which Embodiment 1 relates; FIG. 4 is a schematic diagram of the sofa frame in the seating state to which Embodiment 2 relates; FIG. 5 is a schematic diagram of the sofa rack in the half state to which Embodiment 2 relates; FIG. 6 is a schematic diagram of the sofa frame in the lying state to which Embodiment 2 relates; FIG. 7 is a schematic diagram of the sofa frame in the seating state to which Embodiment 3 relates; FIG. 8 is a schematic diagram of the sofa rack in the half state to which Embodiment 3 relates; FIG. 9 is a schematic diagram of the sofa frame in the lying state to which Embodiment 3 relates.Reference numerals in the figures: 1-first drive mechanism; 2-second drive mechanism; 3-base; 4-seat frame; 5-push rod; 6-footrest; 60-support plate; 61-first support rod; 62-second support rod; 621-rear support point of the support rod; 622-front support point of the support rod; 63-third support rod; 64-fourth support rod; 65-fifth support rod; 66-sixth support rod; 67-seventh support rod; 68-support frame; 69-pendulum rod; 61'-first support rod; 62'-second support rod; 63'-third support rod; 64'-fourth support rod; 65'-fifth support rod; 66'-sixth support rod; 67'-seventh support rod; 7-backrest assembly; 71-first connecting rod; 711 front support point of the connecting rod; 712 rear support point of the connecting rod; 72 second connecting rod; 73 third connecting rod; 731 upper support point of the connecting rod; 732 lower support point of the connecting rod; 74 fourth connecting rod; 75 fifth connecting rod; 76 sixth connecting rod; 77 support element; 771 front support point of the backrest; 772 rear support point of the backrest; 773 backrest portion; 8 damping element.Specific EmbodimentsThe technical solution of the present invention will be described in more detail below by way of exemplary embodiments:[Embodiment 1]Referring to Figs. 1 to 3, the present invention provides a sofa stand having zero gravity and zero wall support, the sofa stand comprising: a first driving mechanism 1, a second driving mechanism 2, a base 3, a seat stand 4, a push rod 5, a footrest assembly 6 convertible between a contracted state and an extended state, and a backrest assembly 7 convertible between an upright state and an inclined state, wherein the first driving mechanism 1 is disposed on the base 3 and the seat stand 4 is movably disposed on the base 3, the first driving mechanism 1 is drivingly connected to the seat stand 4 to move the seat stand 4 to move forward and backward relative to the base 3, the second driving mechanism 2 is disposed on the seat stand 4, the second driving mechanism 2 is drivingly connected to the push rod 5 to drive the push rod 5 to move forward and backward relative to the seat frame 4, the seat frame 4 and the push rod 5 are both linked to the footrest assembly 6, and when the push rod 5 moves forward relative to the seat frame 4, the footrest assembly 6 is converted from the contracted state to the extended state, and when the push rod 5 moves backward relative to the seat frame 4, the footrest assembly 6 is converted from the extended state to the contracted state, the base 3 and the seat frame 4 are both linked to the backrest assembly 7, and when the seat frame 4 moves forward relative to the base 3, the backrest assembly 7 is converted from the upright state to the inclined state, and when the seat frame 4 moves backward relative to the base 3, the backrest assembly 7 is converted from the inclined state to the upright state.In practical use, the sofa frame is installed inside the sofa. The base 3 being located within the sofa base and being fixedly disposed relative to the sofa base; the seat frame 4 being located within the inside of the sofa cushion and being configured to drive the sofa cushion in movement; the footrest assembly 6 being located within the sofa footrest and being configured to drive the sofa footrest to raise and lower; the backrest assembly 7 being located within the sofa backrest and being configured to drive the sofa backrest to change the support angle. In this embodiment, the footrest assemblies 6 are made up of two pieces, and the two footrest assemblies 6 are arranged left and right relative to each other; the backrest assemblies 7 are also made up of two pieces, and the two backrest components 7 are also arranged left and right relative to each other. By arranging two footrest arrangements 6 arranged on the left and right relative to one another and two backrest arrangements 7 arranged on the left and right relative to one another, the sofa footrest and the sofa backrest can be set in motion more stably. And in other embodiments, the footrest assembly 6 and the backrest assembly 7 may also have different numbers.To more conform to human operating habits, the sofa stand may be operated in the following order: while the sofa stand is converted from the seating state to the reclining state, the second drive mechanism 2 is first configured to drive the push rod 5 to move forward relative to the seating stand 4 so that the foot support assembly 6 is converted from the contracted state to the extended state, and the sofa stand is in a half-seated state at this time, and the first drive mechanism 1 is configured to drive the seating stand 4 to move forward relative to the base 3 so that the backrest assembly 7 is converted from the upright state to the inclined state; In the process of converting the sofa frame from the reclining state to the seating state, the first driving mechanism 1 is configured to drive the seat frame 4 to move backward relative to the base 3 so that the backrest assembly 7 is converted from the inclined state to the upright state, and the sofa frame is in a semi-lying state at this time, and the second driving mechanism 2 is configured to drive the push rod 5 to move backward relative to the seat frame 4 so that the footrest assembly 6 is converted from the extended state to the contracted state.As shown in FIG. 1, in this embodiment, the first drive mechanism 1 is a linear module including a module motor 11, a module rail 12, and a module slider 13, the module rail 12 being disposed along the front and rear directions, the module slider 13 being movably disposed on the module rail 12, the module rail 12 being provided with a gear assembly (not shown in the figure), the module motor 11 being connected to the module slider 13 through the gear assembly to drive the module slider 13 to reciprocate, and the module slider 13 being fixedly connected to the seat frame 4. In operation, the module motor 11 drives the module slide 13 to move on the module rail 12 through the gear assembly, thereby driving the seat frame 4 in motion. Wherein the gear assembly may adopt a gear structure that mates with a screw rod and a screw rod nut, and also adopt a belt gear structure, the above-mentioned gear structure belonging to the existing gear assembly structure and not described herein.In this embodiment, the second driving mechanism 2 is an electric telescopic rod, the motor of the electric telescopic rod is disposed on the seat frame 4, and the rod body of the electric telescopic rod is linked to the push rod 5. In operation, the motor of the electric telescopic rod drives the rod body through the reduction gear to move, thereby driving the push rod 5 in motion. It is worth noting that in this embodiment, since the first driving mechanism 1 and the second driving mechanism 2 are both power sources, the sofa frame can be operated in the order described above or can be operated in the opposite order of the above action, with the user having a higher freedom in selection.As shown in FIG. 2, in this embodiment, the foot support assembly 6 includes: a first support rod 61, a second support rod 62, a third support rod 63, a fourth support rod 64, a fifth support rod 65, a sixth support rod 66, a seventh support rod 67, a support frame 68, and a swing rod 69, wherein the start end of the first support rod 61 and the start end of the fifth support rod 65 are hinged to the seat frame 4, the start end of the second support rod 62 is hinged to the driven end of the first support rod 61, the start end of the third support rod 63 is hinged to the driven end of the second support rod 62, the start end of the fourth support rod 64 is hinged to the driven end of the third support rod 63, the starting end of the sixth support rod 66 is linked to the driven end of the fifth support rod 65, the starting end of the seventh support rod 67 is linked to the driven end of the sixth support rod 66, the second support rod 62 is provided with the rear support point 621 of the support rod and the front support point 622 of the support rod, the rear support point 621 of the support rod is linked to the central part of the fifth support rod 65, the starting end of the support frame 68 is linked to the front support point 622 of the support rod, the starting end of the pendulum rod 69 is linked to the driven end of the support frame 68, the driven end of the pendulum rod 69 is linked to the central part of the sixth support rod 66, and the fourth support rod 64 is linked to the central part of the seventh support rod 67. When the foot support assembly 6 is converted from the extended state to the contracted state, the first support rod 61, the second support rod 62, the third support rod 63, the fourth support rod 64, the fifth support rod 65, the sixth support rod 66, the seventh support rod 67, the bracket 68, and the fork 69 are folded rearward, and when the foot support assembly 6 is converted from the contracted state to the extended state, the first support rod 61, the second support rod 62, the third support rod 63 The fourth support rod 64, the fifth support rod 65, the sixth support rod 66, the seventh support rod 67, the support rod 68, and the swing rod 69 are extended forward. Wherein the overall length of the footrest assembly 6, when in the extended state, is longer and can be applied to the sofa footrest with a long length. It should be noted that the starting end refers to the loaded end of the rod and the driven end refers to the end of the rod that moves after tensioning.Specifically, the third support rod 63, the seventh support rod 67, and the support plate 68 are all provided with support plates, and when the foot support assembly 6 is in the extended state, the support plate of the third support rod 63, the support plate of the seventh support rod 67, and the support plate of the support bracket 68 are flush with each other. The support plate of the third support rod 63, the support plate of the seventh support rod 67 and the support plate of the support frame 68 are all configured to support the sofa footrest. It should be noted that the mutual levelling of the above-mentioned support plates means that the support surfaces of the above-mentioned support plates lie on the same horizontal plane.More specifically, as shown in FIG. 3, the base 3 is provided with two rails 31 disposed left and right relative to each other, and the seat frame 4 is provided with at least two guide blocks 41 disposed left and right relative to each other, the two guide blocks 41 being respectively in sliding fit with the two rails 31. In operation, the rails 31 are adapted to guide the movement of the guide blocks 41, thereby guiding the movement of the seat frame 4.Specifically, the rail 31 is V-shaped, the rear portion of the rail 31 is horizontally disposed, and the front portion of the rail 31 is inclined from rear to front to upper; the seat frame 4 is provided with at least four guide blocks 41, four guide blocks 41 are arranged in pairs at left and right relative to each other, and the two left side guide blocks 41 are respectively slidably fitted with the front portion and the rear portion of the left side rail 31, and the two right side guide blocks 41 are respectively slidably fitted with the front portion and the rear portion of the right side rail 31. While the sofa frame is converted from the seating state to the reclining state, the seat frame 4 moves forward and upward to be converted from a horizontal state to an upward inclined state, so that the human body is more comfortable in support; when the sofa frame is converted from the reclining state to the seating state, the seat frame 4 moves rearward and downward to be converted from the upward inclined state to the horizontal state.Specifically, the seat back assembly 7 includes: a first connecting rod 71, a second connecting rod 72, a third connecting rod 73, a fourth connecting rod 74, a fifth connecting rod 75, a sixth connecting rod 76, and the seat back member 77, wherein the first connecting rod 71 is fixed to the seat frame 4, the first connecting rod 71 is provided with a connecting rod front support point 711 and a connecting rod rear support point 712, the start end of the second connecting rod 72 is linked to the connecting rod front support point 711, the start end of the third connecting rod 73 is linked to the connecting rod rear support point 712, the start end of the fourth connecting rod 74 is linked to the driven end of the third connecting rod 73, the driven end of the fourth connecting rod 74 is linked to the base 3, the third connecting rod 73 is provided with the connecting rod upper support point 731 and the connecting rod lower support point 732, the connecting line of the connecting rod upper support point 731, the starting end of the third connecting rod 73 and the connecting rod lower support point 732 is L-shaped, the starting end of the fifth connecting rod 75 is linked to the middle part of the second connecting rod 72, the driven end of the fifth connecting rod 75 is linked to the connecting rod upper support point 731, the driven end of the sixth connecting rod 76 is linked to the connecting rod lower support point 732, and the backrest member 77 is provided with a backrest front support point 771 and a backrest rear support point 772, the driven end of the second connecting rod 72 is linked to the backrest front support point 771, and the starting end of the sixth connecting rod 76 is hinged to the backrest rear support point 772. The backrest member 77 is also provided with a backrest portion 773 for supporting the sofa backrest. When converting the sofa frame from the seating state to the reclining state, the first connecting rod 71, the second connecting rod 72, the third connecting rod 73, the fourth connecting rod 74, the fifth connecting rod 75 and the sixth connecting rod 76 are folded rearward, the backrest portion 773 is converted from the upright state to the inclined state, and when converting the sofa frame from the reclining state to the seating state, the first connecting rod 71, the second connecting rod 72, the third connecting rod 73, the fourth connecting rod 74, the fifth connecting rod 75 and the sixth connecting rod 76 are extended forward, and the backrest portion 773 is converted from the inclined state to the upright state.[Embodiment 2]As shown in Figs. 4 to 6, this embodiment is different from Embodiment 1 in that the second driving mechanism 2 is a driving rod, the first driving mechanism 1 is drivingly connected to the rear end of the driving rod to drive the driving rod to reciprocate, and the front end of the driving rod is linked to the push rod 5.The sofa frame is operated in the following order: in the conversion of the sofa frame from the seat state to the reclining state, the first driving mechanism 1 is first used to drive the second driving mechanism 2 to move forward, the push rod 5 is driven to move forward relative to the seat frame 4, so that the footrest assembly 6 is converted from the contracted state to the extended state, and the sofa frame is in a half state at this time, and thereafter the first driving mechanism 1 is used to drive the second driving mechanism 2 to move further forward, the footrest assembly 6 drives the seat frame 4 to move forward relative to the base 3, so that the backrest assembly 7 is converted from the upright state to the inclined state; In the conversion of the sofa frame from the reclining state to the seating state, the first driving mechanism 1 is first used to drive the second driving mechanism 2 to move backward, the seat frame 4 is driven by the footrest assembly 6 to move backward relative to the base 3, so that the backrest assembly 7 is converted from the inclined state to the upright state, and the sofa frame is in a half state at this time, and thereafter the first driving mechanism 1 is used to drive the second driving mechanism 2 to move further backward, the push rod 5 is driven to move backward relative to the seat frame 4, so that the footrest assembly 6 is converted from the extended state to the contracted state. It is worth noting that in this embodiment, since there is only one power source of the first driving mechanism 1 and the second driving mechanism 2 is driven to move by the first driving mechanism 1, the sofa stand can be operated only in the above order, and although the user has less freedom in selection, the cost is also lower than that of the embodiment 1.In particular, the module slide 13 is articulated with the rear end of the drive rod. As the drive rod moves, the drive rod rotates relative to the module slide 13 to cooperate with the seat frame 4 which moves forwardly and upwardly.In this embodiment, the driving rods are made of two pieces, and the two driving rods are arranged at the left and right relative to each other. Two driving rods, which are arranged on the left and right relative to each other, can more evenly balance the force supply and the effect of the sofa frame is more stable. And in other embodiments, the drive rod may also have a different number.In this embodiment, the other structures of the sofa stand are the same as those of Embodiment 1 and will not be described here.[Embodiment 3]As shown in FIGS. 7 to 9, this embodiment is different from Embodiment 2 in that the sofa stand further comprises: the cushion member 8, wherein the base 3 and the seat stand 4 are both connected to the cushion member 8 to apply a rearward force to the seat stand 4. In converting the sofa frame from the seating state to the reclining state, as the push rod 5 moves forward relative to the seating frame 4, since the damper 8 exerts a rearward force on the seating frame 4, it can be ensured that the seating frame 4 remains immovable until the footrest assembly 6 is in the extended state, and at this time, the first drive mechanism 1 resists the force of the damper 8 and drives the second drive mechanism 2 to move further forward, thereby causing the seating frame 4 to move forward relative to the base 3; In the conversion of the sofa frame from the lying state to the seating state, since the damper 8 exerts a rearward force on the seat frame 4, it can be ensured that the seat frame 4 is first driven to move rearward relative to the base 3 and then the push rod 5 is driven to move rearward relative to the seat frame 4. It will be appreciated that the rearward force is exerted on the seat frame 4 by the damper element 8, so that it can be ensured that the seat frame is operated in an order corresponding to the human operating habits.In this embodiment, the damping elements 8 are made of two pieces, and the two damping elements 8 are arranged at the left and right relative to each other. The two damping elements 8, which are arranged on the left and right relative to one another, can balance the provision of force more uniformly and the action of the sofa frame is more stable. And in other embodiments, the damping elements 8 can also have a different number.In this embodiment, the damper 8 is a tension spring, the base 3 and the seat frame 4 are fixedly connected to both ends of the tension spring, respectively, and the tension spring exerts a rearward force on the seat frame 4. When the seat frame 4 moves forward relative to the base 3, the tension spring is stretched, thereby generating an elastic restoring force. In other embodiments, the damper 8 may be other parts having elasticity, such as elastic bands, springs, etc., and when the damper 8 is a spring, the both ends of the spring are respectively pressed forward against the base 3 and rearward against the seat frame 4.As shown in FIG. 8, in this embodiment, the foot support assembly 6 comprises: a first support rod 61', a second support rod 62', a third support rod 63', a fourth support rod 64', a fifth support rod 65', a sixth support rod 66', and a seventh support rod 67', wherein the starting end of the first support rod 61' and the starting end of the fifth support rod 65' are hinged to the seat frame 4, the starting end of the second support rod 62' is hinged to the driven end of the first support rod 61', the starting end of the third support rod 63' is hinged to the driven end of the second support rod 62', the starting end of the fourth support rod 64' is hinged to the driven end of the third support rod 63', the starting end of the sixth support rod 66' is hinged to the driven end of the fifth support rod 65', the starting end of the seventh support rod 67' is hinged to the driven end of the sixth support rod 66', the middle part of the second support rod 62' is hinged to the middle part of the fifth support rod 65', the middle part of the third support rod 63' is hinged to the middle part of the sixth support rod 66', and the driven end of the fourth support rod 64' is hinged to the middle part of the seventh support rod 67'. When the foot support assembly 6 is converted from the extended state to the contracted state, the first support rod 61', the second support rod 62', the third support rod 63', the fourth support rod 64', the fifth support rod 65', the sixth support rod 66' and the seventh support rod 67' are folded rearward, and when the foot support assembly 6 is converted from the contracted state to the extended state, the first support rod 61', the second support rod 62', the third support rod 63', the fourth support rod 64', the fifth support rod 65', the sixth support rod 66' and the seventh support rod 67' are extended forward. In this embodiment, the seventh support rod 67' is used instead of the fourth support rod 64 and the seventh support rod 67 in Embodiment 1, the overall length of the foot support assembly 6 when it is in the extended state is shortened, the structure is simplified, and can be applied to the sofa support having a short length.Specifically, the third support rod 63' and the seventh support rod 67' are both provided with support plates, and when the foot support assembly 6 is in the extended state, the support plate of the third support rod 63' and the support plate of the seventh support rod 67' are flush with each other. The support plate of the third support rod 63' and the support plate of the seventh support rod 67' are all configured to support the sofa footrest.In this embodiment, the other structures of the sofa stand are the same as those of Embodiment 2 and will not be described here.A zero gravity, zero wall type sofa frame comprising: a base, a seat frame, a first drive mechanism, a backrest assembly, a footrest assembly, a pushrod and a second drive mechanism, the seat frame movably disposed on the base, the base and the seat frame are both hinged to the backrest assembly, the seat frame and the pushrod are hinged to the footrest assembly, and the second drive mechanism is driven by the pushrod to drive the pushrod to move forward and backward relative to the seat frame. Since the sofa frame is provided with a first drive mechanism and a second drive mechanism, during the conversion state of the sofa frame, the footrest assembly and the seat frame can be respectively moved so that the overall effect of the sofa more matches the human body's action habits and allows the user a better experience.
Claims
A zero gravity, zero wall type sofa frame convertible between a seating condition and a reclining condition, comprising: a base; a sofa frame, the seating frame movably disposed on the base; a first drive mechanism for driving the seating frame to move forward and rearward relative to the base, the first drive mechanism disposed on the base; a backrest assembly convertible between upright and inclined conditions, the base and the seating frame being hinged to the backrest assembly, wherein when the seating frame moves forward relative to the base, the backrest assembly is converted from the upright condition to the inclined condition, and when the seating frame moves rearward relative to the base, the backrest assembly is converted from the inclined condition to the upright condition; a footrest assembly convertible between contracted and extended states; and a pushrod, the seat frame and pushrod being hinged to the footrest assembly, wherein when the pushrod moves forward relative to the seat frame, the footrest assembly is converted from the contracted state to the extended state, and when the pushrod moves backward relative to the seat frame, the footrest assembly is converted from the extended state to the contracted state; characterized in that the footrest further comprises: a second drive mechanism, the second drive mechanism being drivingly connected to the pushrod to drive the pushrod to reciprocate relative to the seat frame.The zero gravity, zero wall type sofa rack according to claim 1, characterized in that the first driving mechanism is a linear module comprising: a module motor, a module rail, and a module slider, wherein the module rail is disposed along the front and rear directions, the module slider is movably disposed on the module rail, the module rail is provided with a gear assembly, the module motor is connected to the module slider through the gear assembly to drive the module slider to reciprocate, and the module slider is fixedly connected to the seat rack.The zero gravity, zero wall type sofa frame according to claim 2, characterized in that the base is provided with two rails arranged left and right relative to each other, and the seat frame is provided with at least two guide blocks arranged left and right relative to each other, the two guide blocks being respectively in sliding fit with the two rails.The zero gravity, zero wall type sofa frame according to claim 3, characterized in that the rail is V-shaped, the rear portion of the rail is horizontally disposed, and the front portion of the rail is inclined from rear to front to top; the seat frame is provided with at least four guide blocks, four guide blocks are disposed in pairs at left and right relative to each other, and the two guide blocks located at the left side are respectively slidably fitted with the front portion and the rear portion of the rail located at the left side, and the two guide blocks located at the right side are respectively slidably fitted with the front portion and the rear portion of the rail located at the right side.The zero gravity, zero wall type sofa frame of claim 1, characterized in that the second drive mechanism is an electric telescopic rod, wherein the motor of the electric telescopic rod is disposed on the seat frame, and the rod body of the electric telescopic rod is hinged to the push rod.The zero gravity, zero wall type sofa frame of claim 1, characterized in that the second drive mechanism is a drive rod, the first drive mechanism is drivingly connected to the rear end of the drive rod to drive the drive rod to reciprocate, and the front end of the drive rod is linked to the push rod.The zero gravity, zero wall type sofa frame according to claim 6, characterized in that the drive rods are made of two pieces and the two drive rods are arranged to the left and right relative to each other.The zero gravity, zero wall type sofa frame of claim 6, wherein the module slide is hinged to the rear end of the drive rod.The zero gravity, zero wall type sofa frame of claim 1, characterized in that the footrest assembly is made in two pieces, and the two footrest assemblies are disposed left and right relative to each other.The zero gravity, zero wall type sofa frame of claim 1, characterized in that the foot support assembly comprises: a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod, a sixth support rod, a seventh support rod, a support frame, and a pendulum rod, wherein the starting end of the first support rod and the starting end of the fifth support rod are hinged to the seat frame, the starting end of the second support rod is hinged to the driven end of the first support rod, the starting end of the third support rod is hinged to the driven end of the second support rod, the starting end of the fourth support rod is hinged to the driven end of the third support rod, the starting end of the sixth support rod is hinged to the driven end of the fifth support rod, the starting end of the seventh support rod is hinged to the driven end of the sixth support rod, the second support rod is provided with the rear support point of the support rod and the front support point of the support rod, the rear support point of the support rod is hinged to the central part of the fifth support rod, the starting end of the support frame is hinged to the front support point of the support rod, the starting end of the pendulum rod is hinged to the driven end of the support frame, the driven end of the pendulum rod is hinged to the central part of the sixth support rod, and the fourth support rod is hinged to the central part of the seventh support rod.The zero gravity, zero wall type sofa frame of claim 10, characterized in that the third support rod, the seventh support rod and the support frame are all provided with support plates, and when the foot support assembly is in the extended state, the support plate of the third support rod, the support plate of the seventh support rod and the support plate of the support frame are flush with each other.The zero gravity, zero wall type sofa frame of claim 1, characterized in that the foot support assembly comprises: a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod, a sixth support rod, and a seventh support rod, wherein the start end of the first support rod and the start end of the fifth support rod are hinged to the seat frame, the start end of the second support rod is hinged to the driven end of the first support rod, the start end of the third support rod is hinged to the driven end of the second support rod, the start end of the fourth support rod is hinged to the driven end of the third support rod, the start end of the sixth support rod is hinged to the driven end of the fifth support rod, the starting end of the seventh support rod is hinged to the driven end of the sixth support rod, the middle part of the second support rod is hinged to the middle part of the fifth support rod, the middle part of the third support rod is hinged to the middle part of the sixth support rod, and the driven end of the fourth support rod is hinged to the middle part of the seventh support rod.A zero gravity, zero wall type sofa frame according to claim 12, characterized in that the third support rod and the seventh support rod are both provided with support plates, and when the foot support assembly is in the extended state, the support plate of the third support rod and the support plate of the seventh support rod are flush with each other.A zero gravity, zero wall type sofa frame according to claim 1, characterized in that the backrest assemblies are made in two pieces and the two backrest assemblies are arranged to the left and right relative to each other.The zero gravity, zero wall type sofa frame according to claim 1, characterized in that the backrest assembly comprises: a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, and the backrest member, wherein the first connecting rod is fixed to the seat frame, the first connecting rod is provided with a front support point of the connecting rod and a rear support point of the connecting rod, the start end of the second connecting rod is linked to the front support point of the connecting rod, the start end of the third connecting rod is linked to the rear support point of the connecting rod, the start end of the fourth connecting rod is linked to the driven end of the third connecting rod, the driven end of the fourth connecting rod is linked to the base, the third connecting rod is provided with the upper support point of the connecting rod and the lower support point of the connecting rod, the connecting line of the upper support point of the connecting rod, the starting end of the third connecting rod and the lower support point of the connecting rod is L-shaped, the starting end of the fifth connecting rod is linked to the middle part of the second connecting rod, the driven end of the fifth connecting rod is linked to the upper support point of the connecting rod, the driven end of the sixth connecting rod is linked to the lower support point of the connecting rod, and the backrest element is provided with a front support point of the backrest and a rear support point of the backrest, the driven end of the second connecting rod is linked to the front support point of the backrest, and the starting end of the sixth connecting rod is linked to the rear support point of the backrest.The zero gravity, zero wall type sofa frame of claim 1, characterized in that the sofa frame further comprises: a cushion member, wherein the base and the seat frame are both connected to the cushion member to apply a rearward force to the seat frame.The zero gravity, zero wall type sofa base according to claim 16, characterized in that the damping element is a tension spring, the base and the seat base being respectively fixedly connected to the two ends of the tension spring, and the tension spring exerting a rearward force on the seat base.The sofa frame with zero gravity and zero wall support according to claim 16, characterized in that the damping elements consist of two pieces and the two damping elements are arranged on the left and right relative to each other.