Automobile seat

Abstract

The utility model relates to an automobile seat, which comprises a seat frame assembly and a seat basin assembly arranged at the upper part of the seat frame assembly, and further comprises a front connecting rod assembly, a rear connecting rod assembly and a rear connecting rod assembly, the rear connecting rod assembly is rotatably connected with the rear part of the seat basin assembly, and the rear connecting rod assembly is also rotatably connected with the middle part of the seat frame assembly; the rear driving mechanism is rotatably mounted on the seat frame assembly, and the rear driving mechanism is in driving connection with the rear connecting rod assembly so as to drive the front connecting rod assembly to rotate around the front rotating axis, so that the rear part of the seat basin assembly is lifted upwards relative to the front part of the seat basin assembly. During rear lifting adjustment, the rear portion of the seat basin assembly is integrally lifted and adjusted relative to the front portion of the seat basin assembly, wrinkles caused by foaming and extrusion of the surface cover can be avoided, and the appearance quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially an automobile seat. BACKGROUND

[0002] In order to meet the support of the thighs, the cushion is in a certain inclined state under the design state of the automobile seat, which leads to a certain height difference between the lower end of the backrest and the rear end of the cushion when the backrest of the automobile seat is folded down, so that the waist of the passenger is suspended without support when lying down, which affects the comfort. To solve this technical problem, a prior Chinese patent (application number 202221006711.6, utility model name: waist support device of vehicle seat) discloses a waist support device of vehicle seat, which comprises a waist support structure, a transmission support assembly and a power assembly. The transmission support assembly is pivotally connected with the cushion module. The waist support structure is connected with the rotating side of the transmission support assembly. The power assembly is arranged on the cushion module and is arranged to drive the transmission support assembly to rotate between the support position and the folding position. The transmission support assembly is arranged to support the side of the waist support structure away from the cushion module to lift upward to fill the gap between the backrest module and the cushion module by rotating to the support position. The rear end of the waist support structure is lifted, and the front end of the waist support structure and the cushion module form a certain angle, which causes the foam of the cushion cover to be squeezed and wrinkled, thereby affecting the appearance of the seat. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art, providing an automobile seat, which solves the problem that the rear end of the existing waist support structure is lifted to cause the foam of the cushion cover to be squeezed and wrinkled, thereby affecting the appearance of the seat.

[0004] The technical scheme to achieve the above-mentioned purpose is as follows:

[0005] The utility model provides a kind of automobile seat, including seat frame assembly and the seat basin assembly of being located in the upper portion of the seat frame assembly, the automobile seat further includes:

[0006] front connecting rod assembly, one end of the front connecting rod assembly is pivotally connected with the front portion of the seat basin assembly, the other end of the front connecting rod assembly is pivotally connected with the seat frame assembly;

[0007] rear connecting rod assembly, one end of the rear connecting rod assembly is pivotally connected with the rear portion of the seat basin assembly around rear rotation axis, the other end of the rear connecting rod assembly is pivotally connected with the seat frame assembly;

[0008] A rear driving mechanism is connected to the seat frame assembly and the rear link assembly for driving the rear link assembly to rotate upward relative to the seat frame assembly, thereby driving the front link assembly to rotate around the front rotation axis, so as to lift the rear part of the seat pan assembly upward relative to the front part of the seat pan assembly.

[0009] Further, the rear link assembly comprises rear links arranged on both sides of the rear part of the seat pan assembly, and the rear links are rotatably connected to the rear part of the seat pan assembly and the seat frame assembly respectively.

[0010] Further, the rear link assembly further comprises a rear connecting rod fixedly connected between the two rear links, and the rear connecting rod is rotatably connected to the seat pan assembly to form the rear rotation axis; or the rear connecting rod is arranged to be rotatably connected to the rear links to form the rear rotation axis, and is fixedly connected to the seat pan assembly.

[0011] Further, the rear link assembly further comprises a seat pan rear connecting piece rotatably sleeved on the rear connecting rod, and the seat pan rear connecting piece is fixedly connected to the rear part of the seat pan assembly.

[0012] Further, the rear driving mechanism comprises a driving motor and a driving screw rod, one of the driving motor and the driving screw rod is connected to the seat frame assembly, and the other of the driving motor and the driving screw rod is connected to the rear link, the driving motor drives the driving screw rod to extend or retract relative to the driving motor, thereby driving the rear link to rotate upward relative to the seat frame assembly to lift the rear part of the seat pan assembly upward.

[0013] Further, the rear link comprises a first link part and a second link part, one end of the first link part is rotatably connected to the seat pan assembly, the other end of the first link part is fixedly connected to one end of the second link part at an angle, and the other end of the second link part is rotatably connected to the seat frame assembly or the driving screw rod.

[0014] Further, the seat frame assembly comprises a pair of seat frame side plates, a seat frame front cross pipe supported and connected to the front part of the pair of seat frame side plates, and a link support connected to the seat frame front cross pipe, and the link support is rotatably connected to the other end of the front link assembly.

[0015] Further, the front link assembly comprises front links arranged on both sides of the front part of the seat pan assembly, one end of the front link is rotatably connected to the front part of the seat pan assembly, and the other end of the front link is rotatably connected to the link support to form the front rotation axis.

[0016] The rear driving mechanism drives the rear link assembly to drive the front link to rotate around the front rotation axis, thereby lifting the rear part of the seat pan assembly upward.

[0017] Further, the front connecting rod assembly further comprises a front connecting rod connected between the front connecting rods, the front connecting rod is arranged in fixed connection with the front connecting rods, and is arranged in rotary connection with the seat pan assembly.

[0018] Further, the front connecting rod assembly further comprises a seat pan front connecting piece rotatably sleeved on the front connecting rod; the seat pan front connecting piece is fixedly connected with the front part of the seat pan assembly.

[0019] Further, the front lifting connecting rod assembly comprises a lifting connecting rod, one end of the lifting connecting rod is rotatably connected with the connecting rod support, and the other end of the lifting connecting rod is rotatably connected with the front connecting rod to form the front rotation axis; the rear driving mechanism drives the rear connecting rod assembly to drive the front connecting rod to rotate around the front rotation axis, so that the rear part of the seat pan assembly is lifted upwards.

[0020] Further, the number of the lifting connecting rods is two, the two lifting connecting rods are arranged on opposite sides of the seat pan assembly respectively, and the front lifting connecting rod assembly further comprises a lifting connecting rod fixedly connected between the two lifting connecting rods, and the lifting connecting rod is rotatably connected with the connecting rod support.

[0021] Further, the front driving mechanism is connected with the seat frame assembly and the front connecting rod assembly respectively to drive the front connecting rod assembly to rotate upwards relative to the seat frame assembly, so that the front part of the seat pan assembly is lifted upwards around the rear rotation axis.

[0022] The automobile seat has the following beneficial effects:

[0023] The automobile seat comprises a front connecting rod assembly and a rear connecting rod assembly, the front connecting rod assembly and the rear connecting rod assembly are connected between a seat pan assembly and a seat frame assembly, the rear driving mechanism can drive the rear connecting rod assembly to rotate upwards, and the rear part of the seat pan assembly is lifted upwards as a whole, so that the rear lifting function of the seat cushion of the automobile seat is realized, the height difference between the side of the backrest close to the seat cushion and the rear end of the seat cushion can be reduced after the backrest is laid down, the waist of a passenger is supported, the comfort is improved, and when the rear lifting adjustment is performed, the rear part of the seat pan assembly is lifted and adjusted as a whole relative to the front part, wrinkles caused by the foaming and extrusion of the face cover can be avoided, and the appearance quality is improved.

[0024] The automobile seat further comprises a front lifting connecting rod assembly and a front driving mechanism, the front part of the seat pan assembly can be lifted and adjusted, and the requirements of various adjustment functions of the passenger are met. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1It is the three-dimensional structure schematic view of the cushion framework assembly of the utility model automobile seat.

[0026] Figure 2 For Figure 1 The explosion decomposition structure schematic view of the structure shown in figure 1.

[0027] Figure 3 It is the assembly relationship schematic view of the front connecting rod assembly, the rear connecting rod assembly, the front lifting connecting rod assembly and the seat frame assembly of the utility model automobile seat.

[0028] Figure 4 It is the structure schematic view of the connection of the seat frame front horizontal pipe and the front lifting connecting rod assembly in the utility model automobile seat.

[0029] Figure 5 For Figure 2 The explosion decomposition structure schematic view of the mechanism used for the front lifting function and the rear lifting function in the structure shown in figure 1.

[0030] Figure 6 It is the side view of the utility model automobile seat when the backrest is laid down and the cushion is in the design state.

[0031] Figure 7 It is the side view of the utility model automobile seat when the backrest is laid down and the cushion is in the rear lifting state.

[0032] Figure 8 It is the principle view of the utility model automobile seat when the cushion is in the design state.

[0033] Figure 9 It is the principle view of the utility model automobile seat when the cushion is in the rear lifting state.

[0034] Figure 10 It is the side view of the utility model automobile seat when the backrest is in the support state and the cushion is in the design state.

[0035] Figure 11 It is the side view of the utility model automobile seat when the backrest is in the support state and the cushion is in the front lifting state.

[0036] Figure 12 It is the principle view of the utility model automobile seat when the cushion is in the design state.

[0037] Figure 13 It is the principle view of the utility model automobile seat when the cushion is in the front lifting state.

[0038] Figure 14 It is the principle view of the utility model automobile seat when the cushion is adjusted from the design state to the rear lifting state.

[0039] Figure 15The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0040] Figure 16 The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0041] Figure 17 For Figure 16 The side view of structure shown in figure.

[0042] Figure 18 The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0043] Figure 19 For Figure 16 The structure schematic diagram of structure shown in figure is omitted seat basin assembly.

[0044] Figure 20 The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0045] Figure 21 For Figure 20 The side view of structure shown in figure.

[0046] Figure 22 The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0047] Figure 23 For Figure 20 The structure schematic diagram of structure shown in figure is omitted seat basin assembly.

[0048] Figure 24 The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0049] Figure 25 For Figure 24 The side view of structure shown in figure.

[0050] Figure 26 The utility model discloses a cushion skeleton assembly of automobile seat is in the front lifting state's stereogram structure schematic diagram.

[0051] Figure 27 For Figure 24 The structure schematic diagram of structure shown in figure is omitted seat basin assembly.

[0052] Figure 28It is another embodiment of the utility model automobile seat cushion framework assembly and the three-dimensional structure schematic diagram of spare basin assembly is omitted.

[0053] Figure 29 For Figure 28 The structure schematic diagram of the seat frame front horizontal pipe on the seat frame assembly in the embodiment shown.

[0054] Figure 30 For Figure 28 The principle diagram of the automobile seat shown in the embodiment is adjusted to the rear lifting state in the design state.

[0055] Figure 31 It is the schematic diagram of one application scene of the utility model automobile seat.

[0056] Figure 32 It is the schematic diagram of another application scene of the utility model automobile seat.

[0057] Figure 33 It is the schematic diagram of the utility model automobile seat in the backrest is laid down and the cushion is in the rear lifting state to improve the lying comfort of the member.

[0058] Figure 34 It is the schematic diagram of the prior art automobile seat in the backrest is laid down and the gap is formed between the lower end of the backrest and the rear end of the cushion, which affects the comfort.

[0059] Mark explanation:

[0060] Backrest-11, cushion-12, gap-13,

[0061] Cushion assembly-20, basin assembly-21,

[0062] Seat frame assembly-22, seat frame edge plate-221, seat frame front horizontal pipe-222, connecting rod support-223, front mounting support-224, rear mounting support-225,

[0063] Front connecting rod assembly-23, front connecting rod-231, basin front connecting piece-232, front connecting rod-233, front hinged piece-234,

[0064] Rear connecting rod assembly-24, rear connecting rod-241, basin rear connecting piece-242, rear connecting rod-243, rear hinged piece-244, first connecting rod part-2431, second connecting rod part-2432,

[0065] Rear drive mechanism-25, mounting bolt-251, connecting bolt-252,

[0066] Front lifting connecting rod assembly-26, lifting connecting rod-261, lifting connecting rod-262, connecting frame-263,

[0067] Front drive mechanism-27; connecting piece-271. DETAILED DESCRIPTION

[0068] The utility model will be further described below in combination with the drawings and specific embodiments.

[0069] Referring to Figure 1 , the utility model provides a kind of car seat, for realizing the rear lifting function of cushion, so that backrest is laid down, cushion can be realized by rear lifting and the lower end of backrest is flush, provide support for the waist of passenger, improve passenger comfort, in addition, by the setting of seat bowl assembly, front connecting rod assembly and rear connecting rod assembly, the rear lifting adjustment of cushion is the rear portion of seat bowl assembly relative to the front portion rotates and lifts, can avoid the wrinkle of face cover foaming extrusion, effectively improve the appearance of car seat. The structure of the utility model car seat will be described below in combination with the drawings.

[0070] Referring to Figure 1 , it shows the three-dimensional structure schematic diagram of the cushion framework assembly of the utility model car seat. Referring to Figure 2 , it shows Figure 1 The exploded structural schematic diagram of the structure shown. The structure of the utility model car seat will be described below in combination with Figure 1 And Figure 2 .

[0071] As Figure 1 And Figure 2 , the utility model car seat includes seat frame assembly 22 and seat bowl assembly 21 arranged on seat frame assembly 22.

[0072] The car seat also includes front connecting rod assembly 23, rear connecting rod assembly 24 and rear drive mechanism 25.

[0073] Wherein, one end of front connecting rod assembly 23 is rotatably connected with the front portion of seat bowl assembly 21.The other end of the front connecting rod assembly 23 is also rotatably connected with the front portion of seat frame assembly 22.The front connecting rod assembly 23 is arranged between the front portion of seat bowl assembly 21 and the front portion of seat frame assembly 22.

[0074] One end of rear connecting rod assembly 24 is rotatably connected with the rear portion of seat bowl assembly 21.The other end of the rear connecting rod assembly 24 is also rotatably connected with the middle portion of seat frame assembly 22.The rear connecting rod assembly 24 is also arranged between the rear portion of seat bowl assembly 21 and the rear portion of seat frame assembly 22.

[0075] The rear drive mechanism 25 is rotatably mounted on the seat frame assembly 22. The rear drive motor 25 is drivingly connected with the rear linkage assembly 24. The rear drive motor 25 can drive the rear linkage assembly 24 to rotate upward relative to the seat frame assembly 22, thereby rotating the front linkage assembly (23) around the front rotation axis, and further realizing the rear part of the seat pan assembly (21) being lifted upward relative to the front part of the seat pan assembly (21).

[0076] In the embodiment, when the rear linkage assembly is driven by the rear drive mechanism to rotate upward, the seat pan assembly is lifted upward as a whole, and the rear part of the seat pan assembly is lifted upward relative to the front part of the seat pan assembly, i.e. the lifting amplitude of the rear part of the seat pan assembly is greater than that of the front part of the seat pan assembly.

[0077] Thus, the seat cushion of the automobile seat has a rear lifting function, i.e. the rear part of the seat pan assembly 21 can be lifted upward relative to the front part, the rear lifting adjustment of the seat pan assembly 21 is integral rotation adjustment, which does not affect the appearance of the seat cushion surface, i.e. the face cover of the seat cushion does not have phenomena such as extrusion and wrinkling, and the appearance quality of the automobile seat can be ensured. The rear lifting of the seat pan assembly can be matched with the lower end of the reclining backrest, and the comfort of the passenger lying flat is improved.

[0078] In the embodiment, the seat pan assembly can be divided into a front section and a rear section in space, the front section is mainly used for supporting the thigh root of a human body, and the rear section is mainly used for supporting the hip of a human body. The front section and the rear section of the seat pan assembly are an integral seat pan made of the same material. In some embodiments, the rear section and the front section of the seat pan assembly are made of different materials or structures. It is worth noting that in the embodiment, when the seat pan assembly is lifted upward, the front section and the rear section do not relatively rotate or deform.

[0079] In one specific embodiment of the utility model, as shown in Figure 3 and Figure 5 the rear linkage assembly 24 comprises a rear connecting rod 241, a seat pan rear connecting piece 242 sleeved on the rear connecting rod 241, and rear linkages 243 connected at both ends of the rear connecting rod 241.

[0080] The seat pan rear connecting piece 242 is connected with the rear part of the seat pan assembly 21. The seat pan rear connecting piece 242 can relatively rotate with the rear connecting rod 241. The rear linkage 243 is rotatably connected with the middle part of the seat frame assembly 22. The rear drive mechanism 25 is drivingly connected with one of the rear linkages 243. The rear drive mechanism 25 can drive the rear linkage 243 to rotate upward around the rotation connection between the rear linkage 243 and the seat frame assembly 22 (i.e. the rear rotation axis), and further drive the rear connecting rod 241 and the seat pan rear connecting piece 243 to lift the rear part of the seat pan assembly 21 upward.

[0081] Preferably, the rear drive mechanism 25 is telescopically adjustable. When extended rearward, the rear drive mechanism 25 pushes the connected rear link 243, causing the rear link 243 to rotate upward about its rotational connection with the seat frame assembly 22. The rear link 243 drives the rear connecting rod 241 to rotate upward, which in turn pushes the rear part of the seat assembly 21 upward, achieving an upward lifting effect. Conversely, the rear drive mechanism 25 can drive the rear part of the seat assembly 21 to rotate downward, returning it to its designed state. Preferably, the rear drive mechanism 25 has a self-locking function, which allows the seat assembly 21 to remain in the corresponding state, improving the stability of the seat assembly.

[0082] In a preferred embodiment, the rear drive mechanism 25 includes a drive motor and a drive screw, the drive motor being able to drive the drive screw to extend or retract relative to the drive motor, the drive screw being connected to a corresponding rear connecting rod 243.

[0083] In another preferred embodiment, the rear drive mechanism 25 may also be an electric cylinder, a push rod motor, or other telescopic and adjustable drive mechanism.

[0084] Furthermore, the rear drive mechanism 25 is driven to the lower part of the rear link 243, and the upper part of the rear link 243 is rotatably connected to the middle part of the seat frame assembly 22. Thus, under the driving action of the rear drive mechanism 25, the lower part of the rear link 243 can rotate upward around the upper part for adjustment.

[0085] Furthermore, the rear drive mechanism 25 is rotatably connected to the lower part of the rear connecting rod 243. Preferably, the front part of the rear drive mechanism 25 and the lower part of the rear connecting rod 243 are rotatably connected by a connecting bolt 252. Of course, the rotatable connection is not limited to a connecting bolt, but can also use other parts that can achieve a rotatable connection such as a pin or a rotating shaft.

[0086] Furthermore, there are two rear seat connectors 242, which are sleeved on the rear connecting rod 241. The rear seat connectors 242 are installed at the rear of the seat assembly 21 by fasteners such as mounting screws and bolts, and are fixedly connected to the bottom of the seat assembly 21.

[0087] Furthermore, see Figure 5 As shown, the rear linkage 243 includes a first linkage portion 2431 and a second linkage portion 2432. One end of the first linkage portion 2431 is rotatably connected to the seat assembly 21, the other end of the first linkage portion 2431 is fixedly connected to one end of the second linkage portion 2432 at an angle, and the other end of the second linkage portion 2432 is rotatably connected to the seat frame assembly 22 or the drive screw.

[0088] Preferably, the second link part 2432 is arranged perpendicularly to the first link part 2431. The top of the second link part 2432 (i.e. the other end of the second link part) is rotatably connected to the seat frame assembly 22, for example through a rear hinge 244, which can be a step bolt, or a pin shaft, or other parts capable of realizing the rotatable connection.

[0089] In the embodiment, the rear link is L-shaped. The driving lead screw is rotatably connected to the lower part of the second link part (i.e. one end of the second link part).

[0090] In some embodiments, the rear link is 7-shaped, i.e. the other end of the first link part is connected to the upper part of the second link part. The driving lead screw is rotatably connected to the bottom of the second link part (i.e. one end of the second link part).

[0091] In one specific embodiment of the utility model, as shown in Figure 3 and Figure 5 , the front link assembly 23 comprises a front connecting rod 231, a seat pan front connecting piece 232 sleeved on the front connecting rod 231, and a front link 233 connected to the two ends of the front connecting rod 231; the seat pan front connecting piece 232 is connected to the front part of the seat pan assembly 21, and the seat pan front connecting piece 232 and the front connecting rod 231 can rotate relative to each other; the front link 233 is rotatably connected to the front part of the seat frame assembly 22.

[0092] Further, the seat pan front connecting piece 232 is provided with two, sleeved on the front connecting rod 231, and the seat pan front connecting piece 232 is installed on the front part of the seat pan assembly 21 through mounting screws, bolts and other fasteners, and the seat pan front connecting piece 232 is fixedly connected to the bottom of the seat pan assembly 21. The seat pan front connecting piece 232 is formed with a clamping groove matched with the front connecting rod 231, so that the seat pan front connecting piece 232 is sleeved on the front connecting rod 231, and the front connecting rod 231 can rotate relative to the seat pan front connecting piece 232.

[0093] Still further, one end of the front link 233 is fixedly connected to the corresponding end of the front connecting rod 231, and the other end of the front link 233 is rotatably connected to the front part of the seat frame assembly 22.

[0094] Still further, as shown in Figure 5 , the seat frame assembly 22 comprises a pair of seat frame side plates 221, a seat frame front cross pipe 222 supported and connected to the front part of the pair of seat frame side plates 221, and a link bracket 223 connected to the seat frame front cross pipe 222.

[0095] The specific structure of the seat frame assembly 22 in the utility model can be same as that of the seat frame assembly on the existing automobile seat, which can be installed on the slide rail through the connecting rod mechanism, can realize the lifting of the front part and / or the lifting of the rear part, realizes the function of height adjustment of the seat cushion, and can also not have the height adjustment function and be directly installed on the slide rail.

[0096] In one embodiment, as shown in Figure 28 and Figure 29 the other end of the front connecting rod 233 of the front connecting rod assembly 23 is rotatably connected with the end of the connecting rod support 223 on the seat frame assembly 22. Preferably, the end of the front connecting rod 233 is rotatably connected with the corresponding connecting rod support 223 through a front hinge, which can be a stepped bolt or other parts capable of realizing the rotary connection. In this embodiment, as shown in Figure 30 the rear part of the seat pan assembly 21 is lifted upwards from the solid line position to the dotted line position, the seat pan assembly 21 rotates around the front hinge point A, and in the process of lifting upwards, the front connecting rod assembly 23 also rotates around the front hinge point A. The front hinge point A is the connection between the front connecting rod 233 and the connecting rod support 223 on the seat frame assembly 22. In this embodiment, the seat pan assembly 21 has a rear lifting function.

[0097] In another embodiment, as shown in Figures 2 to 5 the automobile seat further comprises a front lifting connecting rod assembly 26 and a front driving mechanism 27; the front lifting connecting rod assembly 26 is arranged between the seat frame assembly 22 and the front connecting rod assembly 23; the front lifting connecting rod assembly 26 is rotatably connected with the front part of the seat frame assembly 22; the front connecting rod assembly 23 is rotatably connected with the front lifting connecting rod assembly 26; the front driving mechanism 27 is installed on the seat frame assembly 22, and the front driving mechanism 27 is drivingly connected with the front lifting connecting rod assembly 26, can drive the front lifting connecting rod assembly 26 to rotate upwards relative to the seat frame assembly 22, and in turn drive the front connecting rod assembly 23 to rotate upwards around the rotary connection between the front connecting rod assembly 23 and the front lifting connecting rod assembly 26, so that the front part of the seat pan assembly 21 is lifted upwards. In this embodiment, the seat pan assembly 21 has a front lifting function, and also has a rear lifting function.

[0098] Further, the front lifting link assembly 26 comprises a lifting connecting rod 261 and a lifting link 262 connected at two ends of the lifting connecting rod 261; the two ends of the lifting connecting rod 261 are rotatably connected with the front part of the seat frame assembly 22; the lifting link 262 is rotatably connected with the front link 233. Preferably, the two ends of the lifting connecting rod 261 are rotatably connected with the end part of the link support 223 on the seat frame assembly 22, such as through a pin shaft, a bolt or other parts. One end of the lifting link 262 is fixedly connected with the corresponding end part of the lifting connecting rod 261, and the other end of the lifting link 262 is rotatably connected with the end part of the front link 233 through the front hinge 234, which can be a stepped bolt or other parts capable of realizing rotational connection.

[0099] Further, the seat frame front cross pipe 222 is provided with a front mounting support 224; the front driving mechanism 27 is mounted on the front mounting support 224.

[0100] The front driving mechanism 27 is telescopic and adjustable, when the front driving mechanism 27 is extended forward, it can push the lifting connecting rod 261 connected therewith, so that the lifting connecting rod 261 can be rotated upward around the connection between the lifting link 262 and the link support 223, and in turn the front connecting rod 231 is also rotated upward, which pushes the front part of the seat pan assembly 21 to rotate upward, realizing the effect of upward lifting. Conversely, the front driving mechanism 27 can drive the front part of the seat pan assembly 21 to rotate downward to restore to the designed state. The front driving mechanism 27 preferably has a self-locking function, which can keep the seat pan assembly 21 in the corresponding state, improving the stability of the seat cushion assembly.

[0101] Preferably, the front driving mechanism 27 comprises an outer shell and an inner carrier provided in the outer shell, the inner carrier can rotate relative to the outer shell, when installed, the outer shell is fixedly connected to the front mounting support 224 through fastening members such as mounting screws or bolts, a lead screw passes through the inner carrier, a motor can drive the lead screw to adjust the extension and contraction through rotation, the end of the lead screw is connected with the lifting connecting rod 261, the lifting connecting rod 261 is provided with a connecting frame 263, the end of the lead screw is rotatably mounted on the connecting frame 263 through a connecting member 271, when the motor drives the lead screw to adjust the extension and contraction, the lifting connecting rod 261 is driven to rotate, at the same time, the rotation of the lifting connecting rod 261 also drives the lead screw to swing, and in turn drives the inner carrier to rotate relative to the outer shell, which realizes that the lead screw can swing to a certain extent during the extension and contraction adjustment, so as to meet the requirement of driving the lifting connecting rod 261 to rotate upward.

[0102] In one specific embodiment of the present application, as shown in Figure 3 and Figure 5As shown, the rear mounting bracket 225 is provided on the front transverse pipe 222 of the seat frame assembly 22, and the rear driving mechanism 25 is rotatably mounted on the rear mounting bracket 225.

[0103] In one specific embodiment of the present application, as shown in Figure 3 and Figure 5 , the seat pan assembly 21 can be a whole structure or a split structure, i.e. a front half and a rear half are formed, and the front half is connected with the rear half.

[0104] The automobile seat of the present application has two embodiments, the first embodiment has a rear lifting function, and the second embodiment has both a rear lifting function and a front lifting function. The adjustment process of the second embodiment of the automobile seat of the present application is described below.

[0105] As shown in Figure 6 and Figure 7 , the seat pan assembly 21 of the automobile seat is adjusted from the design state to the rear lifting state, and in combination with Figure 8 , Figure 9 and Figure 14 , the rear link assembly 24 is driven by the rear driving mechanism 25 to rotate upward, the rear link assembly 24 rotates upward around the connection with the seat frame assembly 22, which realizes the upward lifting of the rear part of the seat pan assembly 21, and the upward lifting of the seat pan assembly 21 is around the front hinge point A (the hinge point A is the connection between the front link assembly 23 and the front lifting link 26), and in the process of upward lifting of the rear part of the seat pan assembly 21, the front link assembly 23 also rotates adaptively around the front hinge point A, which realizes the rear lifting function of the seat pan assembly 21.

[0106] As shown in Figure 10 and Figure 11 , the seat pan assembly 21 of the automobile seat is adjusted from the design state to the front lifting state, and in combination with Figure 12 , Figure 13 and Figure 15 , the front lifting link assembly 26 is driven by the front driving mechanism 27 to rotate upward, the end of the front lifting link assembly 26 connected with the front link assembly 23 rotates upward around the end of the front lifting link assembly 26 connected with the seat frame assembly 22, and then drives the front part of the seat pan assembly 21 to lift upward through the front link assembly 23, and the upward lifting of the seat pan assembly 21 is around the rear hinge point B (the hinge point B is the connection between the rear link assembly 24 and the seat pan assembly 21), which realizes the front lifting function of the seat pan assembly 21.

[0107] The effect of the front lifting of the cushion of the car seat can be seen from Figures 16 to 19 The effect of the rear lifting of the cushion of the car seat can be seen from Figures 24 to 27 The effect of the rear lifting of the cushion of the car seat can be seen from Figures 20 to 23 The effect of the cushion of the car seat in the designed state is shown.

[0108] As shown in Figure 31 , an application scene of the car seat of the utility model is shown, and single-chair-to-bed is realized, and after the backrest is laid down, the rear part of the cushion can be lifted to be flush with the lower end of the backrest, and the comfort when the passenger lies flat is improved.

[0109] As shown in Figure 32 , another application scene of the car seat of the utility model is shown, and double-row-to-bed is realized, that is, the car seats of the front and rear rows can form a flat bed after the backrests are laid down and the rear parts of the cushions are lifted and adjusted, and the side stops or side wings on both sides of the car seat can also be lowered and adjusted, so that no other structure protrudes on the surface of the formed bed, and the comfort can be improved.

[0110] As shown in Figure 33 , a model person is shown lying on the flat car seat, the backrest of the car seat is laid down, and the rear part of the cushion assembly 20 is lifted and adjusted upwards to be flush with the lower end of the backrest, compared with Figure 34 , the backrest 11 of the car seat in the prior art is shown, and the cushion 12 is arranged in an inclined manner, and a gap 13 is formed between the rear part of the cushion 12 and the lower end of the backrest 11, the gap 13 is at the hip of the model person, and the existence of the gap 13 affects the comfort of the passenger lying, and the rear lifting function of the cushion assembly 20 of the utility model solves the problem that the gap affects the comfort.

[0111] The utility model is described in detail above in combination with the embodiments of the drawings, and those skilled in the art can make various change examples of the utility model according to the above description. Thus, some details in the embodiments should not constitute a limitation on the utility model, and the protection scope of the utility model will be defined by the appended claims.

Claims

1. A car seat comprising a seat frame assembly (22) and a seat pan assembly (21) provided at an upper portion of the seat frame assembly (22), characterized in that, The automobile seat further comprises: a front connecting rod assembly (23), one end of which is rotatably connected with the front part of the seat pan assembly (21), and the other end of which is rotatably connected with the seat frame assembly (22); a rear connecting rod assembly (24), one end of which is rotatably connected with the rear part of the seat pan assembly (21) around a rear rotation axis, and the other end of which is rotatably connected with the seat frame assembly (22); a rear driving mechanism (25) connected with the seat frame assembly (22) and the rear connecting rod assembly (24) for driving the rear connecting rod assembly (24) to rotate upward relative to the seat frame assembly (22), thereby driving the front connecting rod assembly (23) to rotate around a front rotation axis, so as to realize the upward lifting of the rear part of the seat pan assembly (21) relative to the front part of the seat pan assembly (21).

2. The automobile seat according to claim 1, wherein The rear connecting rod assembly (24) comprises rear connecting rods (243) arranged on both sides of the rear part of the seat pan assembly (21), and the rear connecting rods (243) are rotatably connected with the rear part of the seat pan assembly (21) and the seat frame assembly (22) respectively.

3. The automobile seat according to claim 2, wherein The rear connecting rod assembly (24) further comprises a rear connecting rod (241) fixedly connected between the two rear connecting rods (243), and the rear connecting rod (241) is rotatably connected with the seat pan assembly (21) to form the rear rotation axis. Alternatively, the rear connecting rod (241) is arranged to be rotatably connected with the rear connecting rods (243) to form the rear rotation axis, and is fixedly connected with the seat pan assembly (21).

4. The automobile seat according to claim 3, wherein The rear connecting rod assembly (24) further comprises a seat pan rear connecting piece (242) rotatably sleeved on the rear connecting rod (241), and the seat pan rear connecting piece (242) is fixedly connected with the rear part of the seat pan assembly (21).

5. The automobile seat according to claim 2, wherein The rear driving mechanism (25) comprises a driving motor and a driving screw rod, one of which is connected with the seat frame assembly (22), and the other of which is connected with the rear connecting rod (243), and the driving motor drives the driving screw rod to extend or retract relative to the driving motor, thereby driving the rear connecting rod (243) to rotate upward relative to the seat frame assembly (22) to realize the upward lifting of the rear part of the seat pan assembly (21).

6. The automobile seat according to claim 5, wherein The rear connecting rod (243) comprises a first connecting rod part (2431) and a second connecting rod part (2432), one end of the first connecting rod part (2431) is rotatably connected with the seat pan assembly (21), the other end of the first connecting rod part (2431) is fixedly connected with one end of the second connecting rod part (2432) at an angle, and the other end of the second connecting rod part (2432) is rotatably connected with the seat frame assembly (22) or the driving screw rod.

7. The automobile seat according to claim 1, wherein The seat frame assembly (22) comprises a pair of seat frame side plates (221), a seat frame front cross pipe (222) connected to the front of the pair of seat frame side plates (221), and a connecting rod support (223) connected to the seat frame front cross pipe (222), the connecting rod support (223) being rotatably connected to the other end of the front connecting rod assembly (23).

8. The automobile seat according to claim 7, wherein The front connecting rod assembly (23) comprises front connecting rods (233) arranged on both sides of the front of the seat basin assembly (21), one end of the front connecting rod (233) being rotatably connected to the front of the seat basin assembly (21), and the other end of the front connecting rod (233) being rotatably connected to the connecting rod support (223) to form the front rotation axis; The rear driving mechanism (25) drives the rear connecting rod assembly (24) to drive the front connecting rod (233) to rotate around the front rotation axis, thereby achieving the upward lifting of the rear of the seat basin assembly (21).

9. The automotive seat according to claim 8, wherein The front connecting rod assembly (23) further comprises a front connecting rod (231) connected between the front connecting rods (233), the front connecting rod (231) being arranged in fixed connection with the front connecting rods (233) and in rotatable connection with the seat basin assembly (21).

10. The automotive seat according to claim 9, wherein The front connecting rod assembly (23) further comprises a seat basin front connecting piece (232) rotatably sleeved on the front connecting rod (231); the seat basin front connecting piece (232) is fixedly connected to the front of the seat basin assembly (21).

11. The vehicle seat according to any one of claims 8 to 10, wherein The front lifting connecting rod assembly (26) comprises lifting connecting rods (262), one end of the lifting connecting rod (262) being rotatably connected to the connecting rod support (223), and the other end of the lifting connecting rod (262) being rotatably connected to the front connecting rod (233) to form the front rotation axis, the rear driving mechanism (25) drives the rear connecting rod assembly (24) to drive the front connecting rod (233) to rotate around the front rotation axis, thereby achieving the upward lifting of the rear of the seat basin assembly (21).

12. The automotive seat according to claim 11, wherein The number of the lifting connecting rods (262) is two, the two lifting connecting rods (262) are arranged on opposite sides of the seat basin assembly, the front lifting connecting rod assembly (26) further comprises a lifting connecting rod (261) fixedly connected between the two lifting connecting rods (262), and the lifting connecting rod (261) is rotatably connected to the connecting rod support (223).

13. The automotive seat of claim 11, wherein The front driving mechanism (27) is connected to the seat frame assembly (22) and the front connecting rod assembly (23) to drive the front connecting rod assembly (23) to rotate upward relative to the seat frame assembly (22), so that the front of the seat basin assembly (21) is lifted upward around the rear rotation axis.

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