A high-foot iron rack with the function of zero-wall contact

Abstract

The present invention discloses a high-legged, zero-wall-facing functional iron frame. The high-legged, zero-wall-facing functional iron frame comprises two symmetrical assembly side panels, an extension assembly is mounted on the inner side of the assembly side panels, the extension assembly comprises a seat mechanism, the seat mechanism comprises a mounting frame, the mounting frame comprises a vertical plate, a plurality of cushion mounting plates are arranged on the side walls of the vertical plate, the top surface of the cushion mounting plate is lower than the upper edge of the vertical plate, a leg mechanism is arranged on the front side of the vertical plate, a backrest mechanism is arranged on the rear side of the vertical plate, the backrest mechanism comprises a backrest bracket fixed to the vertical plate, a first connecting rod is arranged on the front side of the backrest bracket, the middle part of the first connecting rod is pivotally connected to the backrest bracket, the top of the first connecting rod is pivotally connected to the backrest mounting plate, the bottom of the first connecting rod is pivotally connected to the second connecting rod, the rear end of the second connecting rod is pivotally connected to the third connecting rod, the bottom of the third connecting rod is pivotally connected to a limiter, and the rear part of the backrest bracket is pivotally connected to a support rod. The present invention solves the problem that functional sofas cannot be placed zero-wall-facing in the prior art, which affects space utilization and poor comfort.

Description

Technical Field

[0001] The invention relates to the field of home furnishing manufacturing, in particular to a high-legged iron frame with zero wall support function. Background Art

[0002] To meet user needs, functional sofas currently offer three positions: sitting, TV-viewing, and reclining. To switch between these three positions, a push-rod motor typically first opens the leg mechanism, converting the sofa from a sitting position to a TV-viewing position. The push-rod motor is then activated again, causing the telescopic end of the motor to extend further, driving the backrest mechanism to open, converting the sofa from a TV-viewing position to a reclining position. However, during the backrest mechanism's opening, the backrest rotates backward, making it prone to colliding with the wall. Therefore, when the sofa is placed, the backrest cannot be flush against the wall, reducing space utilization. Furthermore, to avoid collisions, the backrest is typically relatively low, impacting the sofa's comfort. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-legged, zero-wall functional iron frame that can increase space utilization and improve the comfort of a functional sofa.

[0004] To achieve the above purpose, the technical solution adopted by the high-legged zero-wall functional iron frame of the present invention is:

[0005] The foldable chair is provided with a plurality of seat cushions, and the top surface of the seat cushions is lower than the upper edge of the upright plate. The front side of the upright plate is provided with a leg mechanism, and the rear side of the upright plate is provided with a backrest mechanism. The backrest mechanism includes a backrest bracket fixed to the upright plate, and a first connecting rod is provided on the front side of the backrest bracket. The middle part of the first connecting rod is pivotally connected to the backrest bracket, the top of the first connecting rod is pivotally connected to the backrest mounting plate, the bottom of the first connecting rod is pivotally connected to the second connecting rod, the rear end of the second connecting rod is pivotally connected to the third connecting rod, the bottom of the third connecting rod is pivotally connected to a limiting member, the tail end of the limiting member is pivotally connected to the assembling side plate, the top of the third connecting rod is pivotally connected to the tail end of the backrest bracket, the rear part of the backrest bracket is pivotally connected to a support rod, and the top of the support rod is pivotally connected to the rear part of the backrest mounting plate.

[0006] The cam is connected to the front of the seat frame by means of a hinged connection between the front and rear wheels, and the hinged connection between the front and rear wheels is connected to the top of the seat frame by means of a hinged connection between the front and rear wheels. The tail of the leg link 1 is pivotally connected to the leg link 3, and the leg link 3 is pivotally connected to the front side of the vertical plate. The pivot axis of the vertical plate and the leg link 3 is lower than the top surface of the seat cushion mounting plate. There are avoidance recesses on both sides below the vertical plate and the leg link 3 pivot axis. The tail of the leg link 3 is provided with a pull rod, the front end of the pull rod is pivotally connected to the tail end of the leg link 3, the rear end of the pull rod is pivotally connected to the side link member 2, and the middle and lower part of the footrest assembly plate 1 is pivotally connected to Leg link two, the tail of leg link two is pivotally connected to leg link four, the middle of leg link four is pivotally connected to leg link one, the tail end of leg link four is pivotally connected to the front side of the vertical plate, the pivot axis between leg link four and the vertical plate protrudes from the top surface of the seat cushion mounting plate, the front part of leg link two is pivotally connected to footrest assembly plate two, the middle of footrest assembly plate two is pivotally connected to leg link five, and the other end of leg link five is pivotally connected to footrest assembly plate one.

[0007] Preferably, the seat cushion mounting plate is formed by folding a portion of the vertical plate downward.

[0008] Preferably, the seat cushion mounting plate is provided with a plurality of mounting holes.

[0009] Preferably, a first limit pin is provided in the middle and upper part of the first connecting rod, and the backrest mounting plate is provided with a first limit surface that cooperates with the first limit pin; a second limit pin is provided in the middle and upper part of the support rod, and the backrest mounting plate is provided with a second limit surface that cooperates with the second limit pin.

[0010] Preferably, a guide pin is provided in the middle of the first connecting rod, and the backrest bracket is provided with an arc-shaped groove for the guide pin to slide.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. When transitioning from a sitting position to a TV position, as the leg mechanism unfolds, the uprights drive the entire backrest mechanism forward. At this point, the backrest essentially does not rotate, and therefore does not interfere with the wall. When transitioning from a TV position to a reclining position, the uprights continue to drive the entire backrest mechanism forward until the limiter pulls on the third link, constraining the lower end of the third link. The second link, pivotally connected to the upper portion of the third link, pulls on the lower end of the first link. The rotation of the first link simultaneously drives the backrest mounting plate backward, leaving ample space for the backrest. The backrest will not interfere with the wall during rotation, achieving zero wall contact and improving space utilization. Based on achieving zero wall contact through the backrest mechanism, a seat cushion mounting plate is provided on the side of the uprights, lower than its upper edge, to reduce the seat cushion installation height and create space for increasing the backrest height, thereby enhancing the comfort of the functional sofa. The backrest bracket moves forward, the backrest mounting plate is on the first connecting rod, and the backrest bracket drives the first connecting rod. When the backrest mechanism is unfolded, the seat frame mounting plate first moves forward under the action of the first, second, and third connecting rods, the support rod, and the limit piece, and then rotates after leaving enough space to avoid the backrest from interfering with the wall during the rotation process, thereby achieving complete zero leaning against the wall and improving space utilization.

[0013] 2. When the backrest mechanism is folded or unfolded, the first and second limit pins always contact the corresponding first and second limit surfaces, thereby improving the stability of the backrest.

[0014] 3. The seat cushion mounting plate is formed by folding down part of the vertical plate, which not only simplifies the production process but also saves materials, thereby reducing production costs.

[0015] 4. The pivot axis between the front and rear support members and the vertical plate protrudes from the top surface of the seat cushion mounting plate to ensure the height of the functional iron frame relative to the ground, making it convenient for the sweeping robot to enter the bottom of the functional sofa for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a high-legged, zero-wall-supporting iron frame according to the present invention;

[0017] Figure 2 This is a front structural diagram of the leg mechanism;

[0018] Figure 3 This is a schematic diagram of the back structure of the leg mechanism;

[0019] Figure 4 It is a front structural diagram of the seat mechanism;

[0020] Figure 5 It is a schematic diagram of the back structure of the seat mechanism;

[0021] Figure 6 It is a front structural diagram of the backrest mechanism;

[0022] Figure 7 It is a schematic diagram of the back structure of the backrest mechanism;

[0023] Figure 8 1. It is a structural diagram of the mounting frame;

[0024] Figure 9 This is a comparison diagram of the distance between the rear edge of the backrest and the wall in the three states of the sitting position, TV position and lying position of the present invention.

[0025] Among them, 1 assembly side panel, 2 extension assembly, 21 seat mechanism, 211 front support member 1, 212 rear support member 1, 213 side link member 1, 214 front rotating member, 215 rear rotating member, 216 side link member 2, 217 front support member 2, 218 rear support member 2, 219 mounting frame, 2191 vertical plate, 2192 seat cushion mounting plate, 2193 mounting hole, 2194 avoidance recess, 22 leg mechanism, 221 footrest assembly plate 1, 222 leg link 1, 223 leg link 3 , 224 pull rod, 225 leg link two, 226 leg link four, 227 footrest assembly plate two, 228 leg link five, 23 backrest mechanism, 231 backrest bracket, 2311 arcuate groove, 232 first connecting rod, 2321 first limiting pin, 2322 guide pin, 233 backrest mounting plate, 2331 first limiting surface, 2332 second limiting surface, 234 second connecting rod, 235 third connecting rod, 236 limiting member, 237 support rod, 2371 second limiting pin, 3 push rod motor. DETAILED DESCRIPTION

[0026] The present invention is further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0027] like Figure 1-9As shown, a high-legged zero-wall functional iron frame includes two symmetrical assembly side panels 1, an extension component 2 is installed on the inner side of the assembly side panel, the extension component includes a seat mechanism 21, the seat mechanism includes a front support member 211 and a rear support member 212, the front support member 1 is pivotally connected to the front part of the assembly side panel, the rear support member 1 is pivotally connected to the middle part of the assembly side panel, a side connecting rod 213 is arranged between the front and rear support members 1, the front end of the side connecting rod 1 is pivotally connected to the top end of the front support member 1, the rear end of the side connecting rod 1 is pivotally connected to the top end of the rear support member 1, the upper part of the front support member 1 is pivotally connected to the front rotating member 214, the upper part of the rear support member 1 is pivotally connected to the rear rotating member 215, a side connecting rod 216 is arranged between the front and rear rotating members, the front end of the side connecting rod 2 is pivotally connected to the front support member 217, and the side The rear end of the connecting rod member 2 is pivotally connected to the rear support member 218, and the top of the front and rear support members 2 is pivotally connected to the mounting frame 219. The mounting frame includes a vertical plate 2191. Four seat cushion mounting plates 2192 are arranged on the side walls of the vertical plate from front to back. The tops of the front and rear support members 2 are pivotally connected to the vertical plate. The pivot axes of the front and rear support members 2 and the vertical plate protrude from the top surfaces of the seat cushion mounting plates. The four seat cushion mounting plates are formed by partially folding downwards on the vertical plate, which not only simplifies the production process but also saves materials, thereby reducing production costs. The four seat cushion mounting plates are in the same plane, the plane is lower than the upper edge of the vertical plate and is perpendicular to the vertical plate. Several mounting holes 2193 are provided on the four seat cushion mounting plates. The mounting holes are round holes or waist-shaped holes or a combination of round holes and waist-shaped holes. The leg mechanism is installed on the front side of the vertical plate 22. The leg mechanism includes a footrest assembly plate 1 221, the tail of the footrest assembly plate 1 is pivotally connected to the leg link 1 222, the tail of the leg link 1 is pivotally connected to the leg link 3 223, the leg link 3 is pivotally connected to the front side of the vertical plate, the pivot axis between the vertical plate and the leg link 3 is lower than the top surface of the seat cushion mounting plate, and avoidance recesses 2194 are provided on both sides below the pivot axis between the vertical plate and the leg link 3, a pull rod 224 is arranged at the tail of the leg link 3, the front end of the pull rod is pivotally connected to the tail end of the leg link 3, and the rear end of the pull rod is pivotally connected to the side link member 2, the middle and lower part of the footrest assembly plate 1 is pivotally connected to the leg link 2 225, the tail of the leg link 2 is pivotally connected to the leg link 4 226, the middle part of the leg link 4 is pivotally connected to the leg link 1, and the tail end of the leg link 4 is pivotally connected to the front side of the vertical plate, the leg link The pivot axis of the fourth and vertical plates protrudes from the top surface of the seat cushion mounting plate, the front part of the leg link 2 is pivotally connected to the footrest assembly plate 227, the middle part of the footrest assembly plate 2 is pivotally connected to the leg link 5 228, and the other end of the leg link 5 is pivotally connected to the footrest assembly plate 1. The backrest mechanism 23 is installed on the rear side of the vertical plate. The backrest mechanism includes a backrest bracket 231 installed on the rear side of the vertical plate, the front side of the backrest bracket is pivotally connected to the first link 232, the middle part of the first link is pivotally connected to the backrest bracket, the top of the first link is pivotally connected to the backrest mounting plate 233, the bottom of the first link is pivotally connected to the second link 234, the rear end of the second link is pivotally connected to the third link 235, the bottom of the third link is pivotally connected to the limiter 236, the tail end of the limiter is pivotally connected to the assembly side plate, and the top of the third link is pivotally connected to the tail end of the backrest bracket.The rear portion of the backrest bracket is pivotally connected to the support rod 237, and the top of the support rod is pivotally connected to the rear portion of the backrest mounting plate. A first limiting pin 2321 is installed in the middle and upper portion of the first connecting rod, and the backrest mounting plate is provided with a first limiting surface 2331 that cooperates with the first limiting pin. A second limiting pin 2371 is installed in the middle and upper portion of the support rod, and the backrest mounting plate is provided with a second limiting surface 2332 that cooperates with the second limiting pin. When the backrest mechanism is folded and unfolded, the first and second limiting pins both contact the corresponding first and second limiting surfaces, thereby improving the stability of the backrest. A guide pin 2322 is installed in the middle portion of the first connecting rod, and the backrest bracket is provided with an arc groove 2311 for the guide pin to slide. When the backrest mechanism is unfolded, the guide pin slides from the bottom to the top of the arc groove to ensure that the backrest mounting plate rotates backward; when the guide pin is at the top of the arc groove, it can also play a supporting role, thereby improving the stability of the backrest.

[0028] The specific working process and principle of the present invention:

[0029] The sitting position is converted to the TV position: the push rod motor 3 is started, the telescopic end of the push rod motor is extended, driving the leg mechanism to unfold, and the leg mechanism opens while driving the vertical plate to move forward, the vertical plate drives the backrest bracket to move forward, and the backrest bracket drives the first connecting rod, the third connecting rod and the support rod to move forward. Since the front end of the second connecting rod is pivotally connected to the lower end of the first connecting rod and the rear end of the second connecting rod is pivotally connected to the upper part of the third connecting rod, the second connecting rod limits the rotation of the first and third connecting rods, that is, limits the rotation of the backrest, and will not collide with the wall.

[0030] Convert from TV posture to lying position: start the push rod motor, let the extended end of the push rod motor continue to extend, and the vertical plate drives the backrest bracket to continue to move forward. Constrained by the limiting part, the third link rotates around the pivot axis at its top end. When the pivot axis at the top end of the third link passes over the pivot axis at the bottom end of the third link, the second link pulls the lower end of the first link, and the first link rotates counterclockwise around the pivot axis with the backrest bracket. The first link drives the backrest mounting plate to unfold until the guide pin slides to the upper part of the arc groove. At this time, the backrest has enough space to rotate backward and will not collide with the wall.

[0031] While ensuring the backrest does not collide with the wall during deployment, the present invention further creates space by lowering the seat cushion mounting surface. This space can be used to increase the backrest height, the seat cushion thickness, or both. It can also increase the angle at which the backrest mechanism opens, allowing the functional sofa to lie flat, thus improving the comfort of the functional sofa from multiple angles.

Claims

1. A high-legged, wall-mounted iron frame comprising two symmetrical assembly side panels, an extension assembly mounted on the inner side of the assembly side panels, the extension assembly comprising a seat mechanism, the seat mechanism comprising a mounting frame, and characterized in that: The mounting frame includes a vertical plate, a plurality of seat cushion mounting plates are provided on the side walls of the vertical plate, the top surface of the seat cushion mounting plate is lower than the upper edge of the vertical plate, a leg mechanism is provided on the front side of the vertical plate, a backrest mechanism is provided on the rear side of the vertical plate, the backrest mechanism includes a backrest bracket fixed to the vertical plate, a first connecting rod is provided on the front side of the backrest bracket, the middle part of the first connecting rod is pivotally connected to the backrest bracket, the top of the first connecting rod is pivotally connected to the backrest mounting plate, the bottom of the first connecting rod is pivotally connected to the second connecting rod, the rear end of the second connecting rod is pivotally connected to the third connecting rod, the bottom of the third connecting rod is pivotally connected to a limiting member, the tail end of the limiting member is pivotally connected to the assembly side plate, and the third connecting rod is pivotally connected to the backrest mounting plate. The top of the backrest is pivotally connected to the tail end of the backrest bracket, the rear of the backrest bracket is pivotally connected to a support rod, the top of the support rod is pivotally connected to the rear of the backrest mounting plate, the seat mechanism also includes a front support member and a rear support member, the front support member is pivotally connected to the front part of the assembly side plate, the rear support member is pivotally connected to the middle part of the assembly side plate, a side connecting rod is provided between the front and rear support members, the front end of the side connecting rod is pivotally connected to the top end of the front support member, the rear end of the side connecting rod is pivotally connected to the top end of the rear support member, the upper part of the front support member is pivotally connected to the front rotating member, the upper part of the rear support member is pivotally connected to the rear rotating member, the front and rear rotating members A side link member 2 is provided between the two members, the front end of the side link member 2 is pivotally connected to the front support member 2, the rear end of the side link member 2 is pivotally connected to the rear support member 2, the top of the front and rear support members 2 are pivotally connected to the vertical plate, and the pivot axis of the front and rear support members 2 and the vertical plate protrudes from the top surface of the seat cushion mounting plate. The leg mechanism includes a footrest assembly plate 1, the tail end of the footrest assembly plate 1 is pivotally connected to the leg link 1, the tail end of the leg link 1 is pivotally connected to the leg link 3, the leg link 3 is pivotally connected to the front side of the vertical plate, the pivot axis of the vertical plate and the leg link 3 is lower than the top surface of the seat cushion mounting plate, and avoidance recesses are provided on both sides below the pivot axis of the vertical plate and the leg link 3 The rear end of the leg link three is provided with a pull rod, the front end of the pull rod is pivotally connected to the rear end of the leg link three, the rear end of the pull rod is pivotally connected to the side link member two, the middle and lower part of the footrest assembly plate one is pivotally connected to the leg link two, the tail of the leg link two is pivotally connected to the leg link four, the middle part of the leg link four is pivotally connected to the leg link one, the tail end of the leg link four is pivotally connected to the front side of the vertical plate, the pivot axis of the leg link four and the vertical plate protrudes from the top surface of the seat cushion mounting plate, the front part of the leg link two is pivotally connected to the footrest assembly plate two, the middle part of the footrest assembly plate two is pivotally connected to the leg link five, and the other end of the leg link five is pivotally connected to the footrest assembly plate one.

2. The high-legged zero-wall functional iron frame according to claim 1, characterized in that: The seat cushion mounting plate is formed by folding a portion of the vertical plate downward.

3. The high-legged zero-wall functional iron frame according to claim 2 is characterized by: The seat cushion mounting plate is provided with a plurality of mounting holes.

4. The high-legged zero-wall functional iron frame according to claim 1 is characterized by: A first limit pin is provided in the middle and upper part of the first connecting rod, and a first limit surface cooperating with the first limit pin is provided on the backrest mounting plate. A second limit pin is provided in the middle and upper part of the support rod, and a second limit surface cooperating with the second limit pin is provided on the backrest mounting plate.

5. The high-legged zero-wall functional iron frame according to claim 1 is characterized by: A guide pin is provided in the middle of the first connecting rod, and an arc groove for the guide pin to slide is provided in the backrest bracket.

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