Multi-functional iron stand and seat

Abstract

The application discloses a multifunctional iron stand and a seat, and relates to the technical field of iron stands, and in particular to a multifunctional iron stand and a seat. The multifunctional iron stand comprises a seat frame and a bottom frame, and further comprises a lifting mechanism, a front adjusting assembly and a lifting connecting rod assembly. The lifting mechanism comprises a lifting driving element and the lifting connecting rod assembly which is connected with the seat frame and the lifting driving element respectively. The front adjusting assembly comprises a front driving element connected with the bottom frame and a front connecting rod connected between the bottom frame and the lifting connecting rod assembly. Under the driving of the lifting driving element, the lifting connecting rod assembly drives the seat frame to make lifting movement relative to the bottom frame. Under the driving of the front driving element, the front connecting rod drives the seat frame to make rotating movement relative to the bottom frame through the lifting connecting rod assembly. The multifunctional iron stand and the seat can effectively save the space occupied by the iron stand and improve the comfort of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of home furnishing, in particular to a multifunctional iron frame and a seat. BACKGROUND

[0002] With the development of the home furnishing industry, people have more and more functional requirements for seats. The movement mechanism of the multifunctional sofa currently usually adopts a large-power motor to drive a multi-link linkage mechanism to realize the multi-motion adjustment of the seat.

[0003] The large-power motor and the multi-link linkage mechanism result in a complex structure and a large occupied space, and the seat is large in size and not flexible, which affects the comfort experience of the seat. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a multifunctional iron frame and a seat, which are simple in structure, small in occupied space, high in reliability, flexible in functional configuration and control, and improve the comfort experience of the occupant.

[0005] In a first aspect, the present application provides a multifunctional iron frame, comprising a seat frame and a bottom frame, and further comprising:

[0006] a lifting mechanism, comprising a lifting driving member, and a lifting linkage assembly connected with the seat frame and the lifting driving member respectively;

[0007] a front adjustment assembly, comprising a front driving member connected with the bottom frame, and a front linkage connected rotatably between the bottom frame and the lifting linkage assembly;

[0008] wherein, under the driving of the lifting driving member, the lifting linkage assembly drives the seat frame to make lifting motion relative to the bottom frame; and under the driving of the front driving member, the front linkage drives the seat frame to make rotating motion relative to the bottom frame through the lifting linkage assembly.

[0009] By adopting the above technical solution, the lifting mechanism and the front adjustment assembly are respectively driven by the lifting driving member and the front driving member, and the mechanism is simpler. The lifting driving member and the front driving member can be combined to control the lifting and rotating motion of the seat frame, and the structure is simple and flexible in control. The lifting driving member and the front driving member can be replaced by a 12V small integrated motor instead of a traditional 29V motor, and the overall volume of the multifunctional iron frame is smaller, which can realize motor miniaturization, mechanism modularization and component integration.

[0010] With reference to the first aspect, in a further implementation form of the first aspect or any implementation form thereof, the lifting linkage assembly comprises a front lifting rod and a rear lifting rod, the rear lifting rod is pivotally connected with the base frame and the seat frame respectively, the lifting drive member is connected with the rear lifting rod to drive the rear lifting rod to rotate relative to the seat frame to realize the lifting movement of the seat frame, the front lifting rod is pivotally connected with the seat frame and the front linkage rod respectively, the front drive member drives the front linkage rod to rotate relative to the base frame, and the front lifting rod, the seat frame and the rear lifting rod form a four-bar linkage mechanism relative to the rotation.

[0011] By adopting the above technical solution, the lifting drive member drives the rear lifting rod to rotate relative to the base frame, the rear lifting rod drives the seat frame to move up or down relative to the base frame during the rotation, and the seat frame drives the front lifting rod to rotate during the lifting movement. The front lifting rod, the seat frame and the rear lifting rod are pivotally connected to form a four-bar linkage mechanism, which can realize the synchronous movement of the front lifting rod, the seat frame and the rear lifting rod driven by the lifting drive member, and realize the lifting of the seat frame to meet different sitting experiences of the user when using the seat.

[0012] With reference to the first aspect, in a further implementation form of the first aspect or any implementation form thereof, the seat frame is fixedly connected with a lifting tooth plate, the lifting drive member is arranged on the rear lifting rod, and an output end of the lifting drive member is provided with a gear that is engaged with the lifting tooth plate.

[0013] By adopting the above technical solution, the lifting drive member is arranged on the rear lifting rod, and the lifting tooth plate is fixedly connected with the seat frame. When the lifting drive member drives the lifting tooth plate to move, the lifting tooth plate drives the seat frame to move as a whole, and the included angle between the seat frame and the rear lifting rod changes to realize the rotation of the rear lifting rod relative to the base frame. During the rotation of the rear lifting rod relative to the base frame, the rear lifting rod and the front lifting rod drive the seat frame to move close to or away from the base frame to realize the lifting of the seat frame.

[0014] With reference to the first aspect, in a further implementation form of the first aspect or any implementation form thereof, the seat frame is fixedly connected with a lifting tooth plate, the lifting drive member is arranged on the rear lifting rod, and an output end of the lifting drive member is provided with a gear that is engaged with the lifting tooth plate.

[0015] By adopting the above technical solution, the rear lifting rod is driven by the lifting drive member, and when the lifting drive member is not working, the rear lifting rod does not rotate and forms a whole with the seat frame. Under the drive of the rear drive member, the four-bar linkage mechanism formed by the front lifting rod, the seat frame and the rear linkage rod drives the seat frame to change the included angle relative to the base frame to realize different inclined postures of the seat frame.

[0016] In combination with the first aspect, in a further implementation form of the first aspect, the rear connecting rod is provided with a toothed portion, the output end of the rear drive is provided with a rear gear wheel engaged with the toothed portion, and the pivot connection axis between the rear connecting rod and the chassis is located between the toothed portion and the pivot connection axis between the rear connecting rod and the rear lifting rod.

[0017] By using the above technical solution, the rear drive drives the rear connecting rod to rotate relative to the chassis to realize the rotation of the seat frame relative to the chassis. The pivot connection axis between the rear connecting rod and the chassis is located between the toothed portion and the pivot connection axis between the rear connecting rod and the rear lifting rod, so as to facilitate the adjustment of the ratio of the power arm and the resistance arm of the rear connecting rod, and make the driving force of the rear drive and the driving range of the rear connecting rod more reasonable. When the rear drive drives the seat frame to be forward inclined, it is convenient for the occupant to sit on the seat frame more smoothly. When the rear drive drives the seat frame to be rearward inclined, the sitting posture of the occupant can be adjusted to make the occupant have a more comfortable riding experience.

[0018] In combination with the first aspect, in a further implementation form of the first aspect, the two ends of the front connecting rod are respectively pivotally connected with the chassis and the front lifting rod, the two pivot axes of the front connecting rod are provided with internal teeth, the output end of the front drive is provided with a front gear wheel engaged with the internal teeth, and the front connecting rod, the front lifting rod and the seat frame are rotationally connected to form a four-bar linkage mechanism.

[0019] By using the above technical solution, the front connecting rod is pivotally connected with the front lifting rod, and the rotation of the front connecting rod can be amplified through the front lifting rod, so that the internal teeth are arranged between the two pivot axes of the front connecting rod, and the front gear wheel of the output end of the front drive is engaged with the internal teeth to drive the front connecting rod to rotate, so that the whole structure is more compact and occupies less space. The front connecting rod, the front lifting rod and the seat frame are rotationally connected to form a four-bar linkage mechanism, so that the inclination angle of the seat frame relative to the chassis can be more conveniently and quickly adjusted.

[0020] In combination with the first aspect, in a further implementation form of the first aspect, the leg supporting mechanism further comprises:

[0021] a support connected with the seat frame;

[0022] a leg supporting assembly, the leg supporting assembly comprising a driving rod, a bracket and a rotating rod, the driving rod being connected with the support and the bracket respectively, one end of the rotating rod being hingedly connected with the support and the other end being slidingly connected with the bracket;

[0023] a supporting plate, the supporting plate being slidingly connected with the bracket;

[0024] a connecting rod assembly, the connecting rod assembly being connected with the supporting plate, the bracket and the rotating rod respectively;

[0025] The driving rod can drive the bracket to rotate between an extended position and a retracted position, and when the driving rod drives the bracket to rotate, the other end of the rotating rod slides relative to the bracket to rotate the connecting rod assembly and push the supporting plate to slide relative to the bracket.

[0026] By adopting the technical scheme, the leg supporting mechanism can drive the bracket and the supporting plate to rotate and slide through the linkage of the leg supporting assembly and the connecting rod assembly, has simple structure, occupies small space, can reduce the height of the seat, and meets the comfort experience of the user.

[0027] With reference to the first aspect, in a further implementation form of the first aspect and / or the implementation forms thereof, the connecting rod assembly comprises a limiting rod and first and second connecting rods which are hingedly connected to each other, one end of the first connecting rod away from the second connecting rod is connected to the rotating rod, one end of the second connecting rod away from the first connecting rod is hingedly connected to the supporting plate, and one end of the limiting rod is hingedly connected to the bracket and the other end is hingedly connected to the middle part of the first connecting rod.

[0028] By adopting the technical scheme, the first and second connecting rods push the supporting plate to slide relative to the bracket under the driving of the driving rod, and the lengthening and shortening of the supporting plate relative to the bracket are realized to meet the function of supporting the legs. The limiting rod can limit the rotating track of the first connecting rod to make the first connecting rod move according to the set track.

[0029] With reference to the first aspect, in a further implementation form of the first aspect and / or the implementation forms thereof, the bracket is provided with a first sliding groove, the end of the first connecting rod away from the second connecting rod is provided with a second sliding groove, the rotating rod is connected with a sliding block, and the sliding block is in sliding connection with the first sliding groove and the second sliding groove; the second sliding groove comprises a first sliding channel and a second sliding channel which are in communication, when the sliding block slides in the first sliding channel, the rotating radius of the supporting plate relative to the bracket is unchanged, and when the sliding block slides in the second sliding channel, the connecting rod assembly pushes the supporting plate to slide relative to the bracket.

[0030] By adopting the technical scheme, the sliding block is in sliding connection with the first and second sliding grooves, the second sliding groove comprises the first and second sliding channels which are in communication, when the sliding block slides in the first sliding channel, the rotating radius of the supporting plate is unchanged, and when the sliding block slides in the second sliding channel, the connecting rod assembly pushes the supporting plate to slide between the retracted position and the extended position. The supporting plate can be kept from moving relative to the bracket within a certain rotating angle range of the bracket during the rotation of the bracket from the retracted position to the extended position, and the supporting plate can slide and lengthen relative to the bracket when the bracket rotates beyond the certain angle. In this way, the supporting plate can be kept from sliding and lengthening when it is under the seat, and the supporting plate can slide and lengthen relative to the bracket after it is rotated out from under the seat. The lower space height of the seat can be reduced, and the comfort of leg supporting can be realized.

[0031] In a second aspect, the application provides a seat comprising the multifunctional iron frame as described in the first aspect.

[0032] By adopting the above technical solution, the seat adopting the multifunctional iron frame can realize multifunctional combined adjustment, can meet more use requirements of the occupant, and has compact structure and relatively small appearance size. The single-function driving is realized by adopting the 12V small integrated motor, and the single-function and double-function adjustment is more energy-saving and has higher and more flexible adjustment precision compared with the traditional 29V motor. The more comfort requirements of the user can be met, the user is truly centered, and the experience of the user is improved.

[0033] In summary, the application has at least one of the following beneficial technical effects:

[0034] 1. The multifunctional iron frame has simple product structure, smaller size, can realize motor miniaturization, mechanism modularization and component integration.

[0035] 2. The multifunctional iron frame can be individually controlled in different functions, different driving combinations can realize different use functions, the product function configuration is flexible, and the application range is wider.

[0036] 3. The seat can realize multifunctional combined adjustment, has multiple sitting postures, and can meet more comfort requirements of the user. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic view of a first embodiment of the multifunctional iron frame of the application;

[0038] Figure 2 is a structural schematic view of another state of the first embodiment of the multifunctional iron frame of the application;

[0039] Figure 3 is a structural schematic view of a second embodiment of the multifunctional iron frame of the application;

[0040] Figure 4 is a structural schematic view of another angle of the second embodiment of the multifunctional iron frame of the application;

[0041] Figure 5 is an exploded structural schematic view of the second embodiment of the multifunctional iron frame of the application;

[0042] Figure 6 is a structural schematic view of a third embodiment of the multifunctional iron frame of the application;

[0043] Figure 7 is a structural schematic view of a backrest adjustment mechanism;

[0044] Figure 8 is a structural schematic view of a sliding mechanism;

[0045] Figure 9 is a schematic view of the structure of the leg rest mechanism in the retracted position;

[0046] Figure 10 is a schematic view of the structure of the leg rest mechanism in the extended position;

[0047] Figure 11 is a schematic view of the structure of the leg rest mechanism in the extended position;

[0048] Figure 12 is a schematic view of the structure of the leg rest mechanism in the extended position;

[0049] Figure 13 is a plan view of the structure of the leg rest mechanism in the extended position;

[0050] Figure 14 is a schematic view of the linkage assembly in the retracted position of the leg rest mechanism;

[0051] Figure 15 is a schematic view of the linkage assembly in the extended position of the leg rest mechanism;

[0052] Figure 16 is a schematic view of the internal structure of the chair of the present application.

[0053] Reference numerals:

[0054] 1, seat frame; 11, lifting tooth plate; 111, lifting tooth-shaped part; 2, lifting mechanism; 21, lifting driving member; 22, right rear lifting rod; 23, right front lifting rod; 24, left rear lifting rod; 25, left front lifting rod; 26, lifting connecting rod; 3, front adjusting assembly; 31, front driving member; 32, right front connecting rod; 321, inner tooth; 33, front gear; 34, front driving connecting rod; 35, left front connecting rod; 4, base frame; 5, rear adjusting assembly; 51, rear driving member; 52, left rear connecting rod; 521, rear tooth-shaped part; 53, right rear connecting rod; 54, rear driving connecting rod; 6, backrest adjusting mechanism; 61, backrest driving member; 62, reclining mechanism assembly; 621, inner plate; 622, outer plate; 63, reclining connecting rod; 7, sliding mechanism; 71, sliding frame; 72, sliding driving member; 73, seat connecting rod; 74, sliding frame connecting rod; 8, backrest frame; 9, leg support mechanism; 91, support frame; 911, fixed plate; 912, left one rod; 913, left two rod; 914, left arc-shaped rod; 915, rotating shaft; 916, right one rod; 917, right two rod; 918, right arc-shaped rod; 92, leg support assembly; 921, driving rod; 922, rotating rod; 9221, sliding block; 923, bracket; 9231, supporting rod; 92311, driving plate; 9232, connecting plate; 9233, first shaft hole; 9234, first shaft; 9235, guide frame; 92351, first sliding groove; 9236, second shaft hole; 9237, second shaft; 93, driving member; 94, supporting plate; 95, connecting rod assembly; 951, first connecting rod; 9511, second sliding groove; 95111, first sliding channel; 95112, second sliding channel; 95113, rotating sliding channel; 952, second connecting rod; 953, limiting rod. DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will further describe the present application with reference to the accompanying drawings. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0056] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0057] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0058] In the description of the application, it should be understood that the terms "up", "down", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0059] Some embodiments of the application will be described in detail below with reference to the accompanying drawings. The features in the following examples can be combined with each other without conflict.

[0060] Example 1

[0061] Please refer to Figure 1 , a schematic structure of an embodiment of a multifunctional iron stand. The multifunctional iron stand comprises a seat frame 1 and a bottom frame 4, the seat frame 1 is fixedly connected with a lifting tooth plate 11, the lifting tooth plate 11 is provided with a lifting tooth-shaped part 111. A lifting mechanism 2 and a front adjusting assembly 3 are connected between the seat frame 1 and the bottom frame 4. The lifting mechanism 2 comprises a lifting driving member 21, a lifting connecting rod assembly connected with the seat frame 1 and the lifting driving member 21, the lifting connecting rod assembly comprises a left front lifting rod 25, a left rear lifting rod 24, a right front lifting rod 23 and a right rear lifting rod 22, the left rear lifting rod 24 and the right rear lifting rod 22 are fixedly connected through a lifting connecting rod 26, the lifting connecting rod 26 is rotatably connected with the seat frame 1, and the lifting driving member 21 is arranged on the right rear lifting rod 22. The left front lifting rod 25 and the left rear lifting rod 24 are rotatably connected to the left side of the seat frame 1 and the bottom frame 4, and the right front lifting rod 23 and the right rear lifting rod 22 are rotatably connected to the right side of the seat frame 1 and the bottom frame 4.

[0062] The front adjusting assembly 3 comprises a front driving member 31 connected with the chassis 4, left and right front connecting rods 35 and 32 rotatably connected between the chassis 4 and the lifting connecting rod assembly, the left front connecting rod 35 being pivotally connected with the chassis 4 and the left front lifting rod 25 respectively, and the right front connecting rod 32 being pivotally connected with the chassis 4 and the right front lifting rod 23 respectively. The left and right front connecting rods 35 and 32 are fixedly connected through a front driving connecting rod 34 rotatably connected with the chassis 4. The front driving member 31 is a 12V small integrated motor, the two pivot axes of the right front connecting rod 32 are provided with an inner tooth 321, the output end of the front driving member 31 is provided with a front gear 33 engaged with the inner tooth 321, the right rear lifting rod 22, the seat frame 1 and the right front lifting rod 23 are rotatably connected to form a four-bar linkage mechanism, and the left rear lifting rod 24, the seat frame 1 and the left front lifting rod 25 are also rotatably connected to form a four-bar linkage mechanism (as shown by the dotted lines in the figure).

[0063] The lifting driving member 21 in the embodiment is a 12V small integrated motor, the output end of the motor is connected with a gear engaged with the lifting toothed portion 111 of the lifting toothed plate 11, the right rear lifting rod 22 rotates relative to the seat frame 1 when the motor rotates, the right rear lifting rod 22 drives the left rear lifting rod 24 to rotate synchronously in the process of rotation, and the right rear lifting rod 22 and the left rear lifting rod 24 rotate around the chassis 4 to push the seat frame 1 to move close to or away from the chassis 4. The seat frame 1 drives the left front lifting rod 25 and the right front lifting rod 23 to rotate in the process of movement, so that the seat frame 1 is stably lifted. Under the driving of the lifting driving member 21, the lifting connecting rod assembly drives the seat frame 1 to move up and down relative to the chassis 4; under the driving of the front driving member 31, the left and right front connecting rods 35 and 32 drive the seat frame 1 to rotate relative to the chassis 4 through the lifting connecting rod assembly, so that the seat frame 1 is flipped forward and backward.

[0064] Please refer to Figure 2 , the front driving member 31 drives the front gear 33 to rotate, the front gear 33 drives the engaged inner tooth 321 to make the right front connecting rod 32 rotate relative to the chassis 4, and the right front connecting rod 32 drives the left front connecting rod 35 to rotate synchronously through the front driving connecting rod 34. The right front connecting rod 32, the right front lifting rod 23 and the seat frame 1 are rotatably connected to form a four-bar linkage mechanism, and the left front connecting rod 35, the left front lifting rod 25 and the seat frame 1 are also rotatably connected to form a four-bar linkage mechanism (as shown by the dotted lines in the figure). The left and right front connecting rods 35 and 32 push the seat frame 1 to rotate relative to the chassis 4 in the process of rotation through the left and right front lifting rods 25 and 23, as shown in the figure, so that the seat frame 1 is lifted up relative to the chassis 4 at the end close to the front adjusting assembly 3, to realize the leisure lying posture of the seat frame 1 leaning backward.

[0065] Embodiment two

[0066] Please refer to Figures 3-5The difference between the embodiment one and the embodiment two is that the embodiment two further comprises a back adjustment assembly 5, the back adjustment assembly 5 comprises a back driving member 51 arranged on the base frame 4, a left back connecting rod 52 pivotally connected with the left back lifting rod 24 and the base frame 4 respectively, a right back connecting rod 53 pivotally connected with the right back lifting rod 22 and the base frame 4 respectively, the back driving member 51 is connected with the left back connecting rod 52 to drive the left back connecting rod 52 to rotate relative to the base frame 4, the left back connecting rod 52 is fixedly connected with the right back connecting rod 53 through a back driving connecting rod 54, the back driving connecting rod 54 is pivotally connected with the base frame 4, and the back driving member 51 is a 12V small integrated motor. The left front lifting rod 25, the seat frame 1 and the left back connecting rod 52 are rotationally connected to form a four-bar linkage mechanism (as shown by the dashed line in the figure), the right front lifting rod 23, the seat frame 1 and the right back connecting rod 53 are also rotationally connected to form a four-bar linkage mechanism, because the left back lifting rod 24 and the right back lifting rod 22 do not rotate, the left back lifting rod 24 and the seat frame 1 can be integrated as a whole, and the right back lifting rod 22 and the seat frame 1 can also be integrated as a whole, the structure of the four-bar linkage mechanism is simplified as shown by the dashed line in the figure, the two hinged shafts of the left back connecting rod 52, the hinged shafts of the left back connecting rod 52 and the left back lifting rod 24 and the hinged shafts of the left front lifting rod 25 and the seat frame 1, the two hinged shafts of the left front lifting rod 25 and the hinged shafts of the left front lifting rod 25 and the left front connecting rod 35 and the hinged shafts of the left back connecting rod 52 and the seat frame 1 form a four-bar linkage mechanism, and the principle of the four-bar linkage mechanism formed by the right front lifting rod 23, the seat frame 1 and the right back connecting rod 53 is the same.

[0067] Embodiment three

[0068] Please refer to Figure 6 and Figure 7 The difference between the embodiment one and the embodiment two is that the embodiment two further comprises a back adjustment assembly 5, the back adjustment assembly 5 comprises a back driving member 51 arranged on the base frame 4, a left back connecting rod 52 pivotally connected with the left back lifting rod 24 and the base frame 4 respectively, a right back connecting rod 53 pivotally connected with the right back lifting rod 22 and the base frame 4 respectively, the back driving member 51 is connected with the left back connecting rod 52 to drive the left back connecting rod 52 to rotate relative to the base frame 4, the left back connecting rod 52 is fixedly connected with the right back connecting rod 53 through a back driving connecting rod 54, the back driving connecting rod 54 is pivotally connected with the base frame 4, and the back driving member 51 is a 12V small integrated motor. The left front lifting rod 25, the seat frame 1 and the left back connecting rod 52 are rotationally connected to form a four-bar linkage mechanism (as shown by the dashed line in the figure), the right front lifting rod 23, the seat frame 1 and the right back connecting rod 53 are also rotationally connected to form a four-bar linkage mechanism, because the left back lifting rod 24 and the right back lifting rod 22 do not rotate, the left back lifting rod 24 and the seat frame 1 can be integrated as a whole, and the right back lifting rod 22 and the seat frame 1 can also be integrated as a whole, the structure of the four-bar linkage mechanism is simplified as shown by the dashed line in the figure, the two hinged shafts of the left back connecting rod 52, the hinged shafts of the left back connecting rod 52 and the left back lifting rod 24 and the hinged shafts of the left front lifting rod 25 and the seat frame 1, the two hinged shafts of the left front lifting rod 25 and the hinged shafts of the left front lifting rod 25 and the left front connecting rod 35 and the hinged shafts of the left back connecting rod 52 and the seat frame 1 form a four-bar linkage mechanism, and the principle of the four-bar linkage mechanism formed by the right front lifting rod 23, the seat frame 1 and the right back connecting rod 53 is the same.

[0069] Embodiment four

[0070] Please refer to Figure 8 The difference between this embodiment and embodiment two is that it further comprises a sliding mechanism 7, the sliding mechanism 7 comprises a sliding frame 71 connected with the chassis 4 in a sliding manner, a sliding drive 72 connected between the chassis 4 and the sliding frame 71, the sliding drive 72 is a 12V small integrated motor, the sliding drive 72 is used to drive the chassis 4 to slide relative to the sliding frame 71, so as to realize the forward and backward movement of the seat frame 1. The seat frame 1 is fixedly connected with a seat connecting rod 73, the sliding frame 71 is fixedly connected with a sliding frame connecting rod 74, the driving end of the sliding drive 72 is connected with the seat connecting rod 73, the driving end of the sliding drive 72 is connected with the sliding frame connecting rod 74, the sliding drive 72 can be an electric push rod, or a worm and gear mechanism or a gear mechanism combination connected with a motor can be used for driving.

[0071] The operation process or principle of this embodiment is: as shown in the preceding figure, when the seat frame 1 needs to be lifted as a whole, the seat frame 1 is driven by the lifting mechanism 2 to move up and down relative to the chassis 4. When it is needed to adjust to a leisure posture for rest, the seat frame 1 is rotated relative to the chassis 4 by the front adjusting assembly 3 to make the front end of the seat frame 1 lift up. When it is needed to adjust to a welcoming posture to facilitate riding, the left rear lifting rod 24 and the right rear lifting rod 22 drive the seat frame 1 to rotate relative to the chassis 4, so that the front end of the chassis 4 rotates downward to lower down, facilitating the rider to sit on the seat frame 1. When it is needed to adjust the seat frame 1 to extend or retract, the seat connecting rod 73 is driven by the sliding drive 72 to slide relative to the chassis 4, so as to realize the change of the overall bearing area of the seat frame 1. The above adjustments can be combined to meet different riding needs.

[0072] Embodiment five

[0073] Please refer to Figures 9-15 The difference between this embodiment and embodiment four is that it further comprises a leg supporting mechanism 9.

[0074] Please refer to Figure 9 When specifically installed and applied, the support 91 of the leg supporting mechanism 9 is rotationally connected with the seat frame 1 of the seat, in the retracted position shown in the figure, the leg supporting mechanism 9 is located below the seat frame 1, under the driving of the driving member 93, the leg supporting assembly 92 rotates approximately 180° around the support 91, and the connecting rod assembly 95 pushes the supporting plate 94 to slide relative to the leg supporting assembly 92 during the rotation process.

[0075] Please refer to Figure 9 and Figure 10The leg supporting mechanism 9 comprises a support 91, a leg supporting assembly 92 rotatably connected with the support 91, and a driving member 93. A connecting rod assembly 95 is connected between the leg supporting assembly 92 and the support 91. The leg supporting assembly 92 comprises a driving rod 921, a bracket 923, and a rotating rod 922. The driving rod 921 is connected with the support 91 and the bracket 923 respectively. The bracket 923 is rotatably connected with the support 91. The rotating rod 922 is hingedly connected with the support 91 at one end and rotatably and slidably connected with the bracket 923 at the other end. The driving rod 921 can drive the bracket 923 to rotate about the support 91 by more than 90 degrees. The driving end of the driving member 93 is connected with the driving rod 921. The driving member 93 drives the driving rod 921 to push the bracket 923 to rotate about the support 91. In the embodiment, the driving member 93 is an electric push rod, and other linear driving mechanisms can also be used.

[0076] Please refer to Figure 10 The support 91 is fixedly connected with a fixed plate 911, a left one rod 912, a left two rod 913, a rotating shaft 915, a right one rod 916, and a right two rod 917. The driving member 93 is fixedly connected with the fixed plate 911. The driving end of the driving member 93 is connected with the driving rod 921. The bracket 923 is fixedly connected with a supporting rod 9231 and a connecting plate 9232. The supporting rod 9231 is fixedly connected with a driving plate 92311. The end of the driving rod 921, which is away from the driving member 93, is pivotally connected with the driving plate 92311. The connecting plate 9232 is fixedly connected with a guide frame 9235. The guide frame 9235 is provided with a first sliding groove 92351. The bracket 923 is further provided with a first shaft hole 9233, a second shaft hole 9236, a first rotating shaft, and a second rotating shaft. The left one rod 912 and the first rotating shaft are pivotally connected with a left arc-shaped rod 914. The right one rod 916 and the second rotating shaft are pivotally connected with a right arc-shaped rod 918. The left two rod 913 and the bracket 923 are pivotally connected with the first shaft hole 9233. The right two rod 917 and the bracket 923 are pivotally connected with the second shaft hole 9236. One end of the rotating rod 922 is pivotally connected with the rotating shaft 915 of the support 91. The other end of the rotating rod 922 is hingedly connected with a sliding block 9221 and slides along the first sliding groove 92351. The other end of the rotating rod 922 is limited in the sliding groove (not labeled in the figure) in the side of the guide frame 9235 to prevent the guide frame 9235 from being separated. The sliding groove in the side of the guide frame 9235 is parallel to the first sliding groove 92351, which can ensure smooth sliding of the sliding block 9221.

[0077] The connecting rod assembly 95 comprises a limiting rod 953, a first connecting rod 951 and a second connecting rod 952 which are hingedly connected to each other, the first connecting rod 951 is provided with a second sliding groove 9511 at one end away from the second connecting rod 952, the rotating rod 922 is pivotally connected with a sliding block 9221 which slides along the first sliding groove 92351 and the second sliding groove 9511. The second connecting rod 952 is hingedly connected with the supporting plate 94 at one end away from the first connecting rod 951, the limiting rod 953 is hingedly connected with the guide frame 9235 at one end and hingedly connected with the first connecting rod 951 at the other end close to the second sliding groove 9511, and the supporting plate 94 is slidingly connected with the bracket 923 through the sliding rail and the sliding groove.

[0078] The guide frame 9235 is fixedly connected to one side of the connecting plate 9232 away from the driving member 93, the rotating rod 922 is rotatably connected with the sliding block 9221 at one end away from the support 91, the sliding block 9221 is arranged in the second sliding groove 9511, when the rotating rod 922 rotates around the support 91, the rotating rod 922 drives the sliding block 9221 to slide, the first connecting rod 951 rotates around the limiting rod 953, the limiting rod 953 rotates around the guide frame 9235, and the first connecting rod 951 drives the second connecting rod 952 to drive the supporting plate 94 to move close to or away from the connecting plate 9232.

[0079] In the retracted position, the driving member 93 and the supporting plate 94 are located below the seat frame 1, the driving member 93 is located between the supporting plate 94 and the seat frame 1, the driving end of the driving member 93 is retracted to drive the supporting rod 9231 to rotate downwardly to the seat frame 1 through the driving rod 921 and the driving plate 92311, the supporting rod 9231 drives the left rod 912, the left arc-shaped rod 914, the right rod 916 and the right arc-shaped rod 918 to rotate, the rotating rod 922 rotates and slides relative to the first sliding groove 92351 to drive the connecting rod assembly 95 to rotate, so that the leg supporting mechanism 9 is retracted to the lower side of the seat frame 1.

[0080] Please refer to Figure 11 , the leg supporting mechanism 9 is located between the retracted position and the extended position, at this time, the driving member 93 drives the bracket 923 to rotate together with the supporting plate 94 relative to the seat frame 1 by an angle greater than 90° and less than 120°, and at the same time, the supporting plate 94 does not slide or slides a small distance relative to the bracket 923, and the supporting plate 94 is in an intermediate state of not being fully extended.

[0081] Please refer to Figure 12 and Figure 13 , the leg supporting mechanism 9 is in the extended position, at this time, the driving member 93 drives the bracket 923 to rotate about 180° around the support 91 through the driving rod 921, the rotating rod 922 drives the connecting rod assembly 95 to rotate, and under the action of the limiting rod 953, the first connecting rod 951 rapidly rotates to drive the supporting plate 94 to rapidly slide away from the bracket 923 to the extended position through the second connecting rod 952.

[0082] Please refer toFigure 14 The second sliding groove 9511 comprises a first sliding channel 95111, a second sliding channel 95112 and a rotating sliding channel 95113, the first sliding channel 95111 and the second sliding channel 95112 are at an angle, and the rotating sliding channel 95113 communicates the first sliding channel 95111 and the second sliding channel 95112.

[0083] Please refer to Figure 14 In the retracted position, the sliding block 9221 is in the first sliding channel 95111, when the sliding block 9221 slides in the first sliding channel 95111, the sliding direction of the sliding block 9221 in the first sliding channel 95111 is the same as the sliding direction of the connecting end of the rotating rod 922 relative to the guide frame 9235, that is, the first sliding channel 95111 coincides with the first sliding groove 92351, and the sliding block 9221 does not push the first connecting rod 951 to rotate.

[0084] Please refer to Figure 15 In the extended position, the sliding block 9221 is in the second sliding channel 95112, when the sliding block 9221 slides in the second sliding channel 95112, the sliding direction of the sliding block 9221 in the second sliding channel 95112 is the same as the sliding direction of the connecting end of the rotating rod 922 relative to the guide frame 9235, that is, the second sliding channel 95112 coincides with the first sliding groove 92351, and the sliding block 9221 does not push the first connecting rod 951 to rotate.

[0085] Please refer to Figure 14 and Figure 15 During the process that the sliding block 9221 slides from the first sliding channel 95111 into the rotating sliding channel 95113 and gradually enters the second sliding channel 95112, the sliding block 9221 pushes the first connecting rod 951 to rotate rapidly under the limitation of the limiting rod 953, realizing the conversion of the leg supporting mechanism 9 from the retracted position to the extended position. The principle of conversion from the extended position to the retracted position is the same.

[0086] The working process or principle of the embodiment is as follows: in combination with the above figures, in the retracted position, the driving member 93 drives the bracket 923 to rotate through the driving rod 921, and the bracket 923 drives the guide bracket 9235 to move together. During the movement of the guide bracket 9235, the end of the rotating rod 922 away from the support 91 slides in the first sliding groove 92351, and the rotating rod 922 drives the sliding block 9221 to slide in the second sliding groove 9511 during the sliding process. When the sliding block 9221 slides in the first sliding groove 95111, because the sliding direction of the sliding block 9221 along the first sliding groove 95111 is the same as that along the first sliding groove 92351, the bracket 923 rotates but the first connecting rod 951 does not rotate. The first position is provided between the extended position and the retracted position, and the rotating radius of the support plate 94 in the first position is not greater than the rotating radius of the support plate 94 in the retracted position and is less than the rotating radius of the support plate 94 in the extended position. When the leg support mechanism 9 moves between the retracted position and the first position, the support plate 94 rotates below the seat frame 1, the first connecting rod 951 does not rotate, so the support plate 94 does not slide and extend relative to the bracket 923, the rotating radius of the support plate 94 can be reduced, and the height of the seat can be reduced. The second position is further provided between the first position and the extended position, the rotating radius of the support plate 94 in the first position is less than the rotating radius of the support plate 94 in the second position, and the rotating radius of the support plate 94 in the second position is equal to the rotating radius of the support plate 94 in the extended position. When the leg support mechanism 9 moves between the first position and the second position, the sliding block 9221 slides in the rotating sliding groove 95113. Because the first sliding groove 95111 and the second sliding groove 95112 form an angle, the sliding block 9221 slides linearly along the first sliding groove 92351 and slides in the rotating sliding groove 95113 during the process of entering the second sliding groove 95112 from the first sliding groove 95111, the sliding block 9221 and the limiting rod 953 drive the first connecting rod 951 to rotate, and the first connecting rod 951 drives the support plate 94 to slide quickly away from the bracket 923 through the second connecting rod 952. When the leg support mechanism 9 moves between the second position and the extended position, the sliding block 9221 enters the second sliding groove 95112 and slides in the second sliding groove 95112, because the sliding direction of the sliding block 9221 along the second sliding groove 95112 is the same as that along the first sliding groove 92351, the bracket 923 rotates but the first connecting rod 951 does not rotate. At this time, because the support plate 94 has contacted and rotated and lifted the legs of the occupant, the support plate 94 does not slide relative to the bracket 923, the support plate 94 and the legs do not move relative to each other, and the comfort of the occupant is improved. The movement principle from the extended position to the retracted position is the same, which will not be described herein.

[0087] Embodiment six

[0088] The embodiment discloses a seat, in particular a chair or a sofa, which comprises a multifunctional iron frame having at least one functional mechanism in the above embodiments and a controller. Please refer to Figure 16For the internal structure of the seat, the backrest frame 8 is connected with the backrest adjusting mechanism 6, and the sliding frame 71 is fixedly connected with the main body of the seat.

[0089] Please refer to Figures 1-16 The controller is connected with the lifting driving part 21 of the lifting mechanism 2, the front driving part 31 of the front adjusting assembly 3, the rear driving part 51 of the rear adjusting assembly 5, the backrest driving part 61 of the backrest adjusting mechanism 6 and the sliding driving part 72 of the sliding mechanism 7 respectively, and under the adjustment of the controller, the seat has a welcoming posture, a leisure posture and a rocking posture.

[0090] In the welcoming posture, the rear driving part 51 drives the rear connecting rod to rotate so as to increase the distance between the seat frame 1 and the connecting end of the rear connecting rod and the bottom frame 4, and the seat frame 1 is inclined forward to form an acute angle with the bottom frame 4.

[0091] In the leisure posture, the front driving part 31 drives the front connecting rod to rotate, and the rear driving part 51 drives the rear connecting rod to rotate, so as to make the distance between the connecting end of the seat frame 1 and the bottom frame 4 greater than the distance between the connecting end of the seat frame 1 and the bottom frame 4, and the seat frame 1 and the backrest frame 8 rotate backward.

[0092] In the rocking posture, the front driving part 31 and the rear driving part 51 reciprocate to drive the seat frame 1 to reciprocate and rotate relative to the bottom frame 4, so as to make the seat frame 1 and the backrest frame 8 reciprocate and rock synchronously, and improve the comfort of riding.

[0093] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, the present application can have various changes, modifications, replacements and variations, and these changes, modifications, replacements and variations all fall within the scope of the present application.

Claims

1. A multifunctional iron stand comprising a seat frame (1) and a base frame (4), characterized in that, Also comprising: a lifting mechanism (2) comprising a lifting driving member (21), a lifting linkage assembly connected with the seat frame (1) and the lifting driving member (21) respectively; a front adjusting assembly (3) comprising a front driving member (31) connected with the base frame (4), a front linkage rotatingly connected between the base frame (4) and the lifting linkage assembly; wherein, under the driving of the lifting driving member (21), the lifting linkage assembly drives the seat frame (1) to make lifting motion relative to the base frame (4); under the driving of the front driving member (31), the front linkage drives the seat frame (1) to make rotating motion relative to the base frame (4) through the lifting linkage assembly; Also comprising a leg supporting mechanism (9), the leg supporting mechanism (9) comprising: a support (91) connected with the seat frame (1); a leg supporting assembly (92) comprising a driving rod (921), a bracket (923) and a rotating rod (922), the driving rod (921) connected with the support (91) and the bracket (923) respectively, the bracket (923) rotatingly connected with the support (91), the rotating rod (922) hinged at one end with the support (91) and connected at the other end with the bracket (923); a supporting plate (94) slidingly connected with the bracket (923); a linkage assembly (95) connected with the supporting plate (94), the bracket (923) and the rotating rod (922) respectively; wherein, the driving rod (921) can drive the bracket (923) to rotate around the support (91) between an extended position and a retracted position, when the driving rod (921) drives the bracket (923) to rotate around the support (91), the other end of the rotating rod (922) slides relative to the bracket (923) to make the linkage assembly (95) rotate and push the supporting plate (94) to slide relative to the bracket (923); the linkage assembly (95) comprising a limiting rod (953) and a first linkage (951) and a second linkage (952) hinged with each other, the first linkage (951) connected at one end away from the second linkage (952) with the rotating rod (922), the second linkage (952) connected at one end away from the first linkage (951) with the supporting plate (94), the limiting rod (953) hinged at one end with the bracket (923) and at the other end with the middle part of the first linkage (951); The bracket (923) is provided with a first sliding groove (92351), one end of the first connecting rod (951) away from the second connecting rod (952) is provided with a second sliding groove (9511), the rotating rod (922) is connected with a sliding block (9221), and the sliding block (9221) is in sliding connection with the first sliding groove (92351) and the second sliding groove (9511); the second sliding groove (9511) comprises a first sliding channel (95111), a rotating sliding channel (95113) and a second sliding channel (95112) which are sequentially communicated, when the sliding block (9221) slides in the first sliding channel (95111) or the second sliding channel (95112), the rotating radius of the supporting plate (94) relative to the support (91) is unchanged, and when the sliding block (9221) slides in the rotating sliding channel (95113), the connecting rod assembly (95) pushes the supporting plate (94) to slide relative to the bracket (923).

2. The multi-functional stand of claim 1, wherein The lifting connecting rod assembly comprises a front lifting rod and a rear lifting rod, the rear lifting rod is rotationally connected with the base frame (4) and the seat frame (1) respectively, the lifting driving member (21) is connected with the rear lifting rod to drive the rear lifting rod to rotate relative to the seat frame (1) and realize the lifting movement of the seat frame (1), the front lifting rod is pivotally connected with the seat frame (1) and the front connecting rod respectively, and the front driving member (31) drives the front connecting rod to rotate relative to the base frame (4); the front lifting rod, the seat frame (1) and the rear lifting rod are relatively rotatable to form a four-connecting-rod mechanism.

3. The multi-functional stand of claim 2, wherein, The seat frame (1) is fixedly connected with a lifting toothed plate (11), the lifting driving member (21) is arranged on the rear lifting rod, and an output end of the lifting driving member (21) is provided with a gear in mesh with the lifting toothed plate (11).

4. The multi-functional stand of claim 2, wherein The rear adjusting assembly (5) comprises a rear driving member (51) arranged on the base frame (4) and a rear connecting rod pivotally connected with the rear lifting rod and the base frame (4) respectively, and the rear driving member (51) is connected with the rear connecting rod to drive the rear connecting rod to rotate relative to the base frame (4).

5. The multi-functional stand of claim 4, wherein, The rear connecting rod is provided with a toothed portion, an output end of the rear driving member (51) is provided with a rear gear in mesh with the toothed portion, and a pivot connection shaft of the rear connecting rod and the base frame (4) is located between the toothed portion and a pivot connection shaft of the rear connecting rod and the rear lifting rod.

6. The multi-functional stand of claim 2, wherein, The two ends of the front connecting rod are respectively pivotally connected with the base frame (4) and the front lifting rod, an inner tooth (321) is arranged between the two pivot shafts of the front connecting rod, an output end of the front driving member (31) is provided with a front gear (33) in mesh with the inner tooth (321), and the front connecting rod, the front lifting rod and the seat frame (1) are rotationally connected to form a four-connecting-rod mechanism.

7. A seat characterized by, The multifunctional iron stand comprises the multifunctional iron stand according to any one of claims 1-6.

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