Automobile seat

Abstract

The utility model relates to an automobile seat which comprises a seat cushion framework assembly and a backrest framework assembly capable of rotating relative to the seat cushion framework assembly, and further comprises a lifting framework assembly with the front end hinged to the seat cushion framework assembly, the pulling assembly is in transmission connection with the backrest framework assembly and the lifting framework assembly and has a moving stroke, and after the pulling assembly passes through the moving stroke, the pulling assembly is driven to pull the rear end of the lifting framework assembly to be lifted through backward rotation of the backrest framework assembly; the first reset piece is connected with the pulling assembly, and the first reset piece generates restoring force in the process that the pulling assembly pulls the rear end of the lifting framework assembly to conduct lifting so that the pulling assembly can be pulled to reset. After the backrest framework assembly rotates for a section of idle stroke, the pulling assembly can transmit rotation of the backrest framework assembly to the lifting framework assembly, so that the rear end of the lifting framework assembly is lifted upwards, and the joint height difference caused by rotation of the lower end of a backrest is compensated; the lifting framework assembly can improve the lying comfort of the seat.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a car seat. Background Art

[0002] The automotive field has gradually added requirements for seat usage scenarios such as movie viewing mode and sleeping mode. Among them, the backward adjustment range of the backrest has been increased. In the sleeping mode, the seat needs to be laid flat 180°. At present, the lower end of the backrest of the car seat is rotatably connected to the seat cushion, and the lower end of the backrest can be rotated backward around the rotation center. During the rotation, the height difference between the lower end of the backrest and the rear end of the seat cushion changes accordingly, which brings about comfort problems. The larger the backrest adjustment angle, the greater the height difference with the rear end of the seat cushion, and the more obvious the discomfort will be. Therefore, it is urgent to provide a new solution. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art and provide a car seat to solve the problem that the existing backrest is rotated backward to adjust and there is a height difference with the rear end of the seat cushion, thus causing discomfort.

[0004] The technical solution to achieve the above purpose is:

[0005] The utility model provides a car seat, comprising a seat cushion frame assembly and a backrest frame assembly that can rotate relatively with the seat cushion frame assembly, and the car seat also includes:

[0006] A lifting frame assembly whose front end is hinged to the seat cushion frame assembly;

[0007] A pulling component that is transmission-connected to the backrest frame assembly and the lifting frame assembly, wherein the pulling component has a moving stroke, and after the moving stroke, the rear end of the lifting frame assembly is lifted by the backward rotation of the backrest frame assembly;

[0008] A first restoring member connected to the pulling assembly generates a restoring force for pulling the pulling assembly to reset when the pulling assembly pulls the rear end of the lifting frame assembly to lift.

[0009] A further improvement of the automobile seat of the utility model is that the backrest frame assembly can be rotated and adjusted relative to the seat cushion frame assembly to a flat state;

[0010] After the backrest frame assembly is rotated backward to a set angle, the rear end of the lifting frame assembly is pulled upward by the pulling component until the rear end of the lifting frame assembly is flush with the upper surface of the backrest frame assembly.

[0011] A further improvement of the motor vehicle seat of the present utility model lies in that the pulling assembly is connected to the rear end of the lifting frame assembly to pull the rear end of the lifting frame assembly to lift.

[0012] A further improvement of the motor vehicle seat of the present utility model lies in that the pulling assembly includes a bracket provided at the lower end of the backrest frame assembly, a pull rod rotatably provided at one end on the seat cushion frame assembly, and a connecting rod hinged to the middle of the pull rod;

[0013] The other end of the pull rod is movably connected to the rear end of the lifting frame assembly;

[0014] One end of the connecting rod is located above the bracket, and a moving stroke is formed between the end of the connecting rod and the bracket. When the bracket rotates with the backrest frame assembly through the moving stroke, it contacts the end of the connecting rod, and then pulls the rear end of the lifting frame assembly to lift through the connecting rod and the pull rod;

[0015] One end of the first reset member is connected to the end of the connecting rod away from the bracket, and the other end of the first reset member is connected to the end of the pull rod away from the bracket.

[0016] A further improvement of the motor vehicle seat of the present utility model lies in that a connecting pin is provided at the end of the connecting rod close to the bracket;

[0017] The bracket forms a mating connection hook corresponding to the connecting pin.

[0018] A further improvement of the motor vehicle seat of the present utility model lies in that a shaft rod is provided at the rear end of the lifting frame assembly;

[0019] A through hole corresponding to the shaft rod is provided at the end of the pull rod away from the bracket, and the shaft rod passes through the through hole to realize the movable connection between the pull rod and the lifting frame assembly.

[0020] A further improvement of the motor vehicle seat of the present utility model lies in that the seat cushion frame assembly includes a rear cross tube;

[0021] The end of the pull rod close to the bracket is sleeved on the rear cross tube, so that the pull rod can rotate around the rear cross tube.

[0022] A further improvement of the motor vehicle seat of the present utility model lies in that the pulling assembly is connected to the front end of the lifting frame assembly, and the connection part between the pulling assembly and the lifting frame assembly is located below the hinge joint between the lifting frame assembly and the seat cushion frame assembly to realize pulling the lifting frame assembly to lift.

[0023] A further improvement of the automotive seat of the present utility model lies in that the pulling assembly includes a cable connected to the lower end of the backrest frame assembly and a blocking member provided on the lifting frame assembly;

[0024] The end of the cable passes through the blocking member and is connected to a limit head. A distance is left between the limit head and the blocking member to form the moving stroke. After one end of the cable connected to the backrest frame assembly rotates to a set angle with the backrest frame assembly, the limit head is pulled through the moving stroke and contacts the blocking member, and then the lifting frame assembly is pulled by the blocking member to be lifted;

[0025] One end of the first reset member is connected to the limit head of the cable, and the other end of the first reset member is connected to the seat cushion side plate or the seat pan on the automotive seat.

[0026] A further improvement of the automotive seat of the present utility model lies in that a fixed bracket is provided on the seat cushion frame assembly corresponding to the cable; the cable is clamped on the fixed bracket.

[0027] A further improvement of the automotive seat of the present utility model lies in that a guiding groove is provided on the backrest frame assembly corresponding to the cable; the corresponding part of the cable is clamped into the guiding groove.

[0028] A further improvement of the automotive seat of the present utility model lies in that it further includes a second reset member with one end connected to the lifting frame assembly, and the other end of the second reset member is connected to the vehicle body, the base of the automotive seat, the connecting slide rail of the automotive seat or the front link.

[0029] A further improvement of the automotive seat of the present utility model lies in that it further includes a limit frame connected to the seat cushion frame assembly. A part of the limit frame is located above the lifting frame assembly to form a limiting part, and the lifting height of the lifting frame assembly is limited by the limiting part.

[0030] The beneficial effect of the automotive seat of the present utility model is as follows:

[0031] The automotive seat of the present utility model is provided with a lifting frame assembly, which is linked with the backrest frame assembly through a pulling assembly. The pulling assembly has a moving stroke, and this moving stroke provides a free stroke for the backrest frame assembly. After the backrest frame assembly rotates through a free stroke, the pulling assembly can transmit the rotation of the backrest frame assembly to the lifting frame assembly, making the rear end of the lifting frame assembly lift upward to compensate for the joint height difference caused by the rotation of the lower end of the backrest. When the seat lies flat at 180°, the lifting frame assembly can improve the comfort of the seat when lying flat.

[0032] The car seat of the present utility model is provided with a reset member. Through the reset member, it can ensure that the pulling assembly returns to its original position when the backrest frame assembly rotates forward, and can also ensure that the lifting frame assembly returns to its original position.

[0033] There are two embodiments of the pulling assembly of the car seat of the present utility model. One is a transmission structure including a bracket, a pull rod and a connecting rod, which has a simple structure, occupies little space and has little influence on the structural strength of the original car seat. The other is a transmission mechanism including a cable and a blocking member, which has fewer parts, low cost and also has no influence on the structural strength of the original car seat.

[0034] The car seat of the present utility model solves the comfort problem and improves the competitiveness of the product.

[0035] The pulling assembly, the lifting frame assembly and the reset member of the car seat of the present utility model meet the requirements of lightweight module design and can be installed in the seat cushion frame assembly. Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the frame assembly of the first embodiment of the car seat of the present utility model.

[0037] Figure 2 It is a schematic structural diagram of the connection of the lower part of the backrest frame assembly, the seat cushion frame assembly, the lifting frame assembly and the pulling assembly of the first embodiment of the car seat of the present utility model.

[0038] Figure 3 It is an exploded view of the connection structure of the backrest side plate, the seat cushion side plate, the pulling assembly and the lifting frame assembly of the first embodiment of the car seat of the present utility model.

[0039] Figure 4 It is a schematic structural diagram of the connecting rod of the first embodiment of the car seat of the present utility model.

[0040] Figure 5 It is a schematic structural diagram of the backrest frame assembly of the first embodiment of the car seat of the present utility model adjusted forward to the maximum position relative to the seat cushion frame assembly.

[0041] Figure 6 It is a schematic structural diagram of the backrest frame assembly of the first embodiment of the car seat of the present utility model adjusted backward to the conventional design position relative to the seat cushion frame assembly.

[0042] Figure 7 It is a schematic structural diagram of the backrest frame assembly of the first embodiment of the car seat of the present utility model adjusted backward to the maximum position relative to the seat cushion frame assembly.

[0043] Figure 8 is Figure 5Schematic structural diagram of the pulling component in the shown state.

[0044] Figure 9 is Figure 6 Schematic structural diagram of the pulling component in the shown state.

[0045] Figure 10 is Figure 7 Schematic structural diagram of the pulling component in the shown state.

[0046] Figure 11 Schematic structural diagram of the skeleton assembly of the second embodiment of the vehicle seat of the present utility model.

[0047] Figure 12 Schematic structural diagram of the connection of the lower part of the backrest skeleton assembly, the seat cushion skeleton assembly, the lifting skeleton assembly and the pulling component of the second embodiment of the vehicle seat of the present utility model.

[0048] Figure 13 Exploded view of the connection structure of the backrest side plate, the seat cushion side plate, the pulling component and the lifting skeleton assembly of the second embodiment of the vehicle seat of the present utility model.

[0049] Figure 14 Schematic structural diagram of the backrest skeleton assembly of the second embodiment of the vehicle seat of the present utility model adjusted forward to the maximum position relative to the seat cushion skeleton assembly.

[0050] Figure 15 Schematic structural diagram of the backrest skeleton assembly of the second embodiment of the vehicle seat of the present utility model adjusted backward to the conventional design position relative to the seat cushion skeleton assembly.

[0051] Figure 16 Schematic structural diagram of the backrest skeleton assembly of the second embodiment of the vehicle seat of the present utility model adjusted backward to the maximum position relative to the seat cushion skeleton assembly.

[0052] Figure 17 is Figure 14 Schematic structural diagram of the pulling component in the shown state.

[0053] Figure 18 is Figure 15 Schematic structural diagram of the pulling component in the shown state.

[0054] Figure 19 is Figure 16 Schematic structural diagram of the pulling component in the shown state.

[0055] Figure 20 Schematic structural diagram of the backrest of the vehicle seat of the present utility model adjusted within a certain range in the front and back directions with no action of the lifting pad.

[0056] Figure 21This is a schematic structural view of the backrest of the car seat of the present utility model adjusted backward to the maximum position and the lifting pad lifted upward.

[0057] Explanation of reference numerals:

[0058] Seat cushion—1; Seat cushion frame assembly—10; Rear cross tube—11; Seat cushion side plate—12; Hinge seat—13; First through hole—131;

[0059] Backrest—2; Backrest frame assembly—20; Lower end—21; Guide groove—22; Backrest side plate—23; Backrest top plate—24; Upper connecting plate of backrest—25; Lower connecting plate of backrest—26;

[0060] Lifting pad—3; Lifting frame assembly—30; Front end—31; Rear end—32; Shaft rod—33; Fixed bracket—34; Wiring groove—341; Side frame—35; First hinge hole—351; Support arm—352; Mounting hole—353; Support tube—36;

[0061] Pulling assembly—40; Bracket—41; Connecting hook—411; Third hinge hole—424; Pull rod—42; Through port—421; Clamping portion—422; Second hanging hole—423; Connecting rod—43; Connecting pin—431; Second hinge hole—432; First hanging hole—433; End plate—434; Cable—44; Limit head—441; Blocking member—45;

[0062] First reset member—51; Second reset member—52; Limit frame—53; Limiting portion—531; Stopping portion—532; Seat cushion suspension—60; Base—70. Detailed implementation manners

[0063] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0064] Refer to Figure 1 , the present utility model provides a car seat, which is used to solve the problem that when the backrest of the existing car seat rotates backward, the height difference between the lower end of the backrest and the tail end of the seat cushion will cause poor comfort, and the greater the adjustment angle of the backrest, the more obvious the discomfort. The car seat of the present utility model realizes the linkage of the backrest frame assembly and the lifting frame assembly by setting a pulling assembly. The pulling assembly provides a rotational adjustment dead band for the backrest frame assembly by setting a moving stroke, that is, after the backrest frame assembly rotates backward to a certain angle, the lifting frame assembly can be driven by the pulling assembly to lift. The present utility model also sets reset members for the lifting frame assembly and the pulling assembly respectively, and the reset members can pull the lifting frame assembly and the pulling assembly to reset when the backrest frame assembly rotates forward. The structure of the car seat of the present utility model will be described below in conjunction with the accompanying drawings.

[0065] Refer toFigure 1 , showing a schematic structural diagram of the frame assembly of the first embodiment of the vehicle seat of the utility model. Figure 2 , showing the structural schematic diagram of the lower part of the backrest frame assembly, the seat cushion frame assembly, the lifting frame assembly and the pulling component connection of the first embodiment of the automobile seat of the utility model. Figure 3 , showing an exploded schematic diagram of the backrest side panels, seat cushion side panels, pulling components and lifting frame assembly connection structure of the first embodiment of the utility model automobile seat. Figures 1 to 3 , the structure of the automobile seat of the utility model is described.

[0066] like Figures 1 to 3 As shown, the automobile seat of the utility model includes a cushion frame assembly 10 and a backrest frame assembly 20, and the backrest frame assembly 20 can be rotated relative to the cushion frame 10, realizing the rotation adjustment function of the automobile seat backrest. The automobile seat of the utility model also includes a lifting frame assembly 30, a pulling component 40 and a first reset member 51; wherein the lifting frame assembly 30 has a front end 31 and a rear end 32, and the front end 31 is hinged with the cushion frame assembly 20, so that the rear end 32 of the lifting frame assembly 30 can be rotated around the hinge of the front end 31, realizing the upward lifting or downward falling of the rear end 32 of the lifting frame assembly 30. The pulling component 40 is transmission-connected to the backrest frame assembly 20 and the lifting frame assembly 30, and the pulling component 40 has a moving stroke, that is, within the range of the moving stroke, the pulling component 40 does not transmit, and the pulling component 40 will transmit after the moving stroke. That is, after the movement stroke, the rearward rotation of the backrest frame assembly 20 drives the pulling assembly 40 to pull the rear end of the lifting frame assembly 30 to lift. The first restoring member 51 is connected to the pulling assembly 40, and the first restoring member 51 is elastic. During the transmission process of the pulling assembly 40 (that is, during the process of the pulling assembly 40 pulling the rear end 32 of the lifting frame assembly 30 to lift), the first restoring member 51 is stretched, so that the first restoring member 51 generates a restoring force, which acts on the pulling assembly 40. When the pulling assembly 40 loses the driving force for the backrest frame assembly 20 to rotate backward, that is, at this time, the backrest frame assembly 20 is rotated forward for adjustment, the pulling assembly 40 is reset under the action of the restoring force of the first restoring member 51.

[0067] In a specific embodiment of the present invention, the backrest frame assembly 20 of the automobile seat of the present invention can be rotated and adjusted to a flat state relative to the seat cushion frame assembly 10; after the backrest frame assembly 20 is rotated backward to a set angle, the rear end 32 of the lifting frame assembly 30 is pulled upward by the pulling component 40 until the rear end 32 of the lifting frame assembly 30 is flush with the upper surface of the backrest frame assembly 20.

[0068] CombinationFigure 20 As shown, the backrest 2 of the vehicle seat can be rotated and adjusted back and forth within a certain angle range. At this time, the pulling assembly 40 moves and adjusts within its moving stroke, and it will not transmit power to the lifting frame assembly 30. That is, at this time, the lifting frame assembly 30 and the backrest frame assembly 20 are in a non-linkage state, and neither the seat cushion 1 nor the lifting cushion 3 has any movement. Combining Figure 20 As shown, when the backrest 2 of the vehicle seat continues to rotate backward from the Figure 20 position where it rotates backward as shown, the pulling assembly 40 generates a transmission effect, pulling the rear end of the lifting cushion 3 upward. When the backrest 2 rotates to a flat state, at this time, the vehicle seat can also be called a large reclining position. The rear end of the lifting cushion 3 is lifted upward, and the upper surface of the lifting cushion 3 is substantially flush with the upper surface of the backrest 2, which can avoid the discomfort caused to the waist by the height difference between the backrest 2 and the seat cushion 1. Combining Figure 20 and Figure 21 As shown, the rear end of the lifting cushion 3 is lifted from a state substantially flush with the rear end of the seat cushion 1 to a state located above the seat cushion 1 and substantially flush with the upper surface of the lower end of the backrest 2.

[0069] The present utility model provides vehicle seats of two embodiments. The difference between the vehicle seats of the two embodiments lies in the structural form of the pulling assembly. In the first embodiment, as Figure 2 and Figure 3 shown, the pulling assembly 40 is connected to the rear end 32 of the lifting frame assembly 30 to pull the rear end 32 of the lifting frame assembly 30 to be lifted. In the second embodiment, as Figure 12 and Figure 13 shown, the pulling assembly 40 is connected to the front end 31 of the lifting frame assembly 30, and the connection point of the pulling assembly 40 and the lifting frame assembly 30 is located below the hinge point of the lifting frame assembly 30 and the seat cushion frame assembly 10 to realize pulling the lifting frame assembly 30 to be lifted. The structures of the first embodiment and the second embodiment will be described below.

[0070] In the first embodiment, as Figures 1 to 3 shown, the pulling assembly 40 includes a bracket 41, a pull rod 42, and a connecting rod 43; wherein the bracket 41 is provided at the lower end 21 of the backrest frame assembly 20; one end of the pull rod 42 is rotatably provided on the seat cushion frame assembly 10, and the other end of the pull rod 42 is movably connected to the rear end 32 of the lifting frame assembly 30; the connecting rod 43 is hinged to the middle of the pull rod 42, one end of the connecting rod 43 is located above the bracket 41, and a moving stroke is formed between the end of the connecting rod 43 and the bracket 41, as Figure 8As shown, there is a certain distance D between the end of the connecting rod 43 and the bracket 41, and this distance D is the moving stroke. As the backrest frame assembly 20 rotates through the moving stroke, the bracket 41 comes into contact with the end of the connecting rod 43, and then pulls the rear end 32 of the lifting frame assembly 30 to lift through the connecting rod 43 and the pull rod 42; one end of the first reset member 51 is connected to the end of the connecting rod 43 away from the bracket 41, and the other end of the first reset member 51 is connected to the end of the pull rod 42 away from the bracket 41.

[0071] The working principle of this pulling assembly 40 is that the backrest frame assembly 20 can rotate freely between the states shown in Figure 8 、 Figure 5 and the states shown in Figure 9 、 Figure 6 The backrest frame assembly 20 can rotate forward or backward. During the above rotation process of the backrest frame assembly 20, the bracket 41 can move towards the connecting rod 43 or away from the connecting rod 43 along with the backrest frame assembly 20. At this time, due to the moving stroke set between the bracket 41 and the connecting rod 43, the backrest frame assembly 20 and the lifting frame assembly 30 are in a non-linkage state. In the state shown in Figure 9 , the bracket 41 is in contact with the end of the connecting rod 43. In this state, when the backrest frame assembly 20 rotates backward for adjustment, it can drive the lifting frame assembly 30 to perform a lifting movement through the bracket 41, the connecting rod 43, and the pull rod 42. Combining the states shown in Figure 10 and Figure 7 , when the backrest frame assembly 20 rotates backward to the maximum position, the rear end of the lifting frame assembly 30 is lifted to the maximum height. At this time, the first reset member 51 is stretched and generates a restoring force acting on the pull rod 42 and the connecting rod 43 to facilitate the reset of the pull rod 42 and the connecting rod 43.

[0072] In a preferred embodiment, the bracket 41 can be a separate component and is fixedly connected to the backrest frame assembly 20 by welding or bolting. Or the bracket 41 is directly integrally formed with the backrest frame assembly 20.

[0073] Further, as shown in Figure 3 and Figure 4 , a connecting pin 431 is provided at the end of the connecting rod 43 close to the bracket 41; the bracket 41 forms a mating connecting hook 411 corresponding to the connecting pin 431. Preferably, the connecting pin 431 is a pin shaft, and an end head plate 434 is connected to the end of the pin shaft. The connecting hook 411 formed on the bracket 41 is arc-shaped, and its inner surface is recessed downward. The connecting hook 411 corresponds to the position of the pin shaft. When the connecting hook 411 moves upward as the backrest frame assembly 20 rotates and adjusts, the connecting hook 411 can be connected to the pin shaft, and then the end head plate 434 can block the connecting hook 411 to improve the stability of the linkage process.

[0074] Further, as shown in Figure 3 and Figure 4 a second hinge hole 432 is provided on the connecting rod 43, and a third hinge hole 424 opposite to the second hinge hole 432 is provided in the middle of the pull rod 42. The third hinge hole 424 is aligned with the second hinge hole 432, and then the connecting rod 43 and the pull rod 42 are hinged by a hinge shaft or a bolt and a bushing passing through the third hinge hole 424 and the second hinge hole 432.

[0075] Still further, as shown in Figure 3 and Figure 4 a first hanging hole 433 is provided at the end of the connecting rod 43 away from the bracket 41, and a second hanging hole 423 opposite to the first hanging hole 433 is provided on the pull rod 42. The second hanging hole 423 and the first hanging hole 433 are used to connect a first reset member 51. One end of the first reset member 51 is hung on the first hanging hole 433, and the other end is hung on the second hanging hole 423. The first reset member 51 is preferably a spring.

[0076] Still further, as shown in Figure 3 and Figure 8 a shaft rod 33 is provided at the rear end 32 of the lifting frame assembly 30, and a through hole 421 corresponding to the shaft rod 33 is provided at the end of the pull rod 42 away from the bracket 41. The through hole 421 penetrates the inner and outer sides of the pull rod 42, and the shaft rod 33 passes through the through hole 421 to realize the movable connection between the pull rod 42 and the lifting frame assembly 30.

[0077] In a preferred embodiment, as shown in Figure 3 the lifting frame 30 includes a pair of side frames 35 arranged oppositely and a support tube 36 that supports and connects the rear ends of the pair of side frames 35. The lifting frame assembly 30 further includes a seat cushion suspension 60, and the seat cushion suspension 60 is hung on the support tube 36. Among them, the shaft rod 33 is provided on the outer side surface of the side frame 35. Further, a first hinge hole 351 is provided at the front end of the side frame 35, and the first hinge hole 351 is used for rotatably connecting with the seat cushion frame assembly 10. Still further, the seat cushion frame assembly 10 includes seat cushion side plates 12 arranged oppositely and a rear cross tube 11 that supports and connects the rear parts of the seat cushion side plates 12. An articulated seat 13 is connected at the corresponding position of the seat cushion side plate 12. A first through hole 131 is opened on the articulated seat 13. The first hinge hole 351 on the side frame 35 is aligned with the first through hole 131 on the corresponding articulated seat 13, and then the side frame 35 and the seat cushion side plate 12 are hinged by a passing hinge shaft or bolt and bushing. The articulated seat 13 can be a separate part, welded or bolted to the seat cushion side plate 12; or the articulated seat 13 is directly integrally formed with the seat cushion side plate 12.

[0078] Still further, as shown in Figure 3As shown, the end of the pull rod 42 close to the bracket 41 is sleeved on the rear cross tube 11, so that the pull rod 42 can rotate around the rear cross tube 11. Preferably, the end of the pull rod 42 forms a clamping portion 422, and the clamping portion 422 can be sleeved on the rear cross tube 11. The clamping portion 422 is preferably a C-shaped bayonet.

[0079] In the second embodiment, as Figures 11 to 13 shown, the pulling assembly 40 includes a cable 44 connected to the lower end 21 of the backrest frame assembly 20 and a stopper 45 provided on the lifting frame assembly 30. The end of the cable 44 passes through the stopper 45 and is connected to a limit head 441. There is a gap between the limit head 441 and the stopper 45 to form a moving stroke. When the end of the cable 44 connected to the backrest frame assembly 20 rotates to a set angle, the limit head 441 is pulled to pass through the moving stroke and contact the stopper 45, and then the lifting frame assembly 30 is pulled by the stopper 45 to be lifted; one end of the first reset member 51 is connected to the limit head 441 of the cable 44, and the other end of the first reset member 44 is connected to the seat cushion side plate 12 or the seat pan on the vehicle seat.

[0080] The working principle of the pulling assembly 40 is as follows: as Figure 14 and Figure 17 shown, the backrest frame assembly 20 is in a forward-leaning state. As Figure 15 and Figure 18 shown, the backrest frame assembly 20 is in a backward-leaning state, and at this time the limit head 441 contacts the stopper 45. The backrest frame assembly can automatically rotate between the states shown in Figure 17 and Figure 18 shown, that is, it can rotate forward or backward. At this time, the cable 44 can move along with the backrest frame assembly 20 in the direction close to the stopper 45 or in the direction away from the stopper 45. Due to the moving stroke provided between the limit head 441 and the stopper 45, the backrest frame assembly 20 and the lifting frame assembly 30 are in a non-linkage state. In the state shown in Figure 18 shown, the limit head 441 contacts the stopper 45. In this state, when the backrest frame assembly 20 continues to rotate backward for adjustment, the lifting frame assembly 30 can be driven to perform a lifting movement through the cable 44 and the stopper 45. As Figure 16 and Figure 19 shown, when the backrest frame assembly 20 rotates backward to the maximum position for adjustment, the rear end of the lifting frame assembly 20 is lifted to the maximum height. At this time, the first reset member 51 is stretched and generates a restoring force acting on the limit head 441 of the cable 44 to facilitate pulling the limit head 441 to reset.

[0081] In a preferred embodiment, as Figures 11 to 13As shown in the figure, a support arm 352 is provided at the front part of the side frame 35 of the lifting skeleton assembly 30. The support arm 352 extends downward. An installation hole 353 is provided at the lower part of the support arm 352. The installation hole 353 is used to install a blocking member 45. The blocking member 45 can be fixedly connected to the installation hole 353 through fasteners such as bolts. The first hinge hole 351 on the side frame 35 is located at the upper part of the support arm 352. In this way, the first hinge hole 351 is located above the blocking member 45. The pulling point of the limiting head 441 of the cable 44 acts on the blocking member 45, that is, the pulling point is located at the lower part of the support arm 352. By pulling, the lower part of the support arm 352 can rotate around the installation hole 353, realizing the upward lifting of the rear end of the side frame 35.

[0082] Furthermore, a fixed bracket 34 is provided on the seat cushion skeleton assembly 10 corresponding to the cable 44; the cable 44 is clamped on the fixed bracket 34. Preferably, the fixed bracket 34 is fixedly connected to the inner side of the seat cushion side plate 12 of the seat cushion skeleton assembly 10. A cable slot 341 is provided on the side part of the fixed bracket 34. The corresponding part of the cable 44 is clamped into the cable slot 341. The setting of the cable slot 341 can limit the cable 44 and improve the structural stability of the cable 44.

[0083] Preferably, a protective tube is sleeved on the cable 44. A pair of clamping plates are provided at the end of the protective tube. The part between the pair of clamping plates is clamped into the cable slot 341. The pair of clamping plates are respectively located on both sides of the cable slot 341. The area of the clamping plate is larger than the notch area of the cable slot 341. In this way, when the cable 44 is pulled, the end of the protective tube is limited on the fixed bracket 34 and does not move. The protective tube can not only protect the cable but also play a role in limiting and guiding the movement of the cable.

[0084] Furthermore, as Figures 11 to 13 shown, a guide groove 22 is provided on the backrest skeleton assembly 20 corresponding to the cable 44; the corresponding part of the cable 44 is clamped into the guide groove 22. The guide groove 22 can play a role in guiding and limiting the movement of the cable 44. Preferably, the guide groove 22 is formed by enclosing a pair of guide plates. The pair of guide plates can be welded and fixed on the backrest skeleton assembly 20 or integrally formed with the backrest skeleton assembly 20. In another preferred embodiment, the guide groove 22 can be directly formed on the backrest skeleton assembly 20 and is formed by the inward recess of a part of the backrest skeleton assembly 20.

[0085] Still further, a hook 231 is provided on the backrest skeleton assembly 20. A collar is provided at the end of the cable 44. The collar is hung on the hook 231.

[0086] In a preferred embodiment, as Figure 11As shown, the backrest frame assembly 20 includes a pair of backrest side plates 23, a backrest top plate 24 connected to the tops of the pair of backrest side plates 23, and an upper connecting plate 25 and a lower connecting plate 26 of the backrest connected between the pair of backrest side plates 23. A hook 231 is provided at the lower part of the backrest side plate 23, and a guide groove 22 is also provided on the backrest side plate 23, below the hook 231.

[0087] In a specific embodiment of the present invention, as Figure 2 、 Figure 3 、 Figure 12 and Figure 13 shown, the vehicle seat of the present invention further includes a second reset member 52 with one end connected to the lifting frame assembly 30, and the other end of the second reset member 52 is connected to the vehicle body, the base 70 of the vehicle seat, the connecting slide rail of the vehicle seat, or connected to the front link, such as connected to the seat cushion side plate 12 of the vehicle seat. The second reset member 52 is preferably a spring. As Figure 10 shown, when the rear end of the lifting frame assembly 30 is lifted upward, the second reset member 52 is stretched, generating a restoring force on the lifting frame assembly 30. When the backrest frame assembly 20 rotates forward at the position of Figure 10 , the pulling assembly 40 contacts the limit of the lifting frame assembly 30, causing the second reset member 52 to pull the rear end of the lifting frame assembly 30 to rotate and descend until it returns to its original position.

[0088] In a specific embodiment of the present invention, as Figure 3 、 Figure 12 and Figure 13 shown, the vehicle seat of the present invention further includes a limit frame 53 connected to the seat cushion frame assembly 10. A part of the limit frame 53 is located above the lifting frame assembly 30 to form a limit portion 531, and the lifting height of the lifting frame assembly 30 is limited by the limit portion 531. As Figure 10 and Figure 19 shown, when the lifting frame assembly 30 is lifted to the maximum height, the top of the side frame 35 of the lifting frame assembly 30 contacts the limit portion 531 of the limit frame 53, realizing physical limitation of the lifting height of the lifting frame assembly 30.

[0089] Further, the lower part of the limit frame 53 is located below the lifting frame assembly 30 to form a stop portion 532. As Figure 8 、 Figure 9 、 Figure 17 and Figure 18 shown, when the rear end of the lifting frame assembly 30 is at the initial position, the bottom of the side frame 35 of the lifting frame assembly 30 contacts the stop portion 532, physically limiting the descending height of the lifting frame assembly 30.

[0090] In a specific embodiment of the present invention, asFigure 5 As shown, the lower part of the backrest side plate 23 of the backrest frame assembly 20 rotates relative to the seat cushion side plate 12 of the seat cushion frame assembly 10 through an angle adjuster and a drive motor.

[0091] The above embodiments of the present utility model have been described in detail in conjunction with the accompanying drawings. Those of ordinary skill in the art can make various variations to the present utility model according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present utility model, and the protection scope of the present utility model will be defined by the scope defined in the appended claims.

Claims

1. A car seat, comprising a seat cushion frame assembly (10) and a backrest frame assembly (20) that can rotate relative to the seat cushion frame assembly (10), characterized in that: The car seat also includes: A lifting frame assembly (30) whose front end (31) is hinged to the seat cushion frame assembly (10); A pulling assembly (40) is transmission-connected to the backrest frame assembly (20) and the lifting frame assembly (30), wherein the pulling assembly (40) has a moving stroke, and after the moving stroke, the backrest frame assembly (20) rotates backward to drive the pulling assembly (40) to pull the rear end (32) of the lifting frame assembly (30) to be lifted; A first restoring member (51) connected to the pulling assembly (40), wherein the first restoring member (51) generates a restoring force for pulling the pulling assembly (40) to reset when the pulling assembly (40) pulls the rear end (32) of the lifting frame assembly (30) to lift.

2. The vehicle seat according to claim 1, characterized in that: The backrest frame assembly (20) can be rotated and adjusted relative to the seat cushion frame assembly (10) to a flattened state; After the backrest frame assembly (20) is rotated backward to a set angle, the rear end (32) of the lifting frame assembly (30) is pulled upward by the pulling component (40) until the rear end (32) of the lifting frame assembly (30) is flush with the upper surface of the backrest frame assembly (20).

3. The vehicle seat according to claim 1, characterized in that: The pulling component (40) is connected to the rear end (32) of the lifting frame assembly (30) to pull the rear end (32) of the lifting frame assembly (30) to lift it.

4. The vehicle seat according to claim 3, characterized in that: The pulling assembly (40) comprises a bracket (41) arranged at the lower end (21) of the backrest frame assembly (20), a pull rod (42) rotatably arranged at one end on the seat cushion frame assembly (10), and a connecting rod (43) hinged to the middle portion of the pull rod (42); The other end of the pull rod (42) is movably connected to the rear end (32) of the lifting frame assembly (30); One end of the connecting rod (43) is located above the bracket (41), and the moving stroke is formed between the end of the connecting rod (43) and the bracket (41). As the backrest frame assembly (20) rotates through the moving stroke, the bracket (41) contacts the end of the connecting rod (43), and then the rear end (32) of the lifting frame assembly (30) is pulled by the connecting rod (43) and the pulling rod (42) to be lifted; One end of the first restoring member (51) is connected to one end of the connecting rod (43) away from the bracket (41), and the other end of the first restoring member (51) is connected to one end of the pulling rod (42) away from the bracket (41).

5. The vehicle seat according to claim 4, characterized in that: The end of the connecting rod (43) close to the bracket (41) is provided with a connecting pin (431); The bracket (41) forms a matching connecting hook (411) corresponding to the connecting pin (431).

6. The vehicle seat according to claim 4, characterized in that: The rear end (32) of the lifting frame assembly (30) is provided with a shaft rod (33); The end of the pull rod (42) away from the bracket (41) is provided with a through hole (421) corresponding to the shaft rod (33), and the shaft rod (33) passes through the through hole (421) to achieve a movable connection between the pull rod (42) and the lifting frame assembly (30).

7. The vehicle seat according to claim 4, characterized in that: The seat cushion frame assembly (10) comprises a rear transverse tube (11); The end of the pull rod (42) close to the bracket (41) is clamped on the rear cross tube (11), so that the pull rod (42) can rotate around the rear cross tube (11).

8. The vehicle seat according to claim 1, characterized in that: The pulling component (40) is connected to the front end (31) of the lifting frame assembly (30), and the connection between the pulling component (40) and the lifting frame assembly (30) is located below the hinge between the lifting frame assembly (30) and the seat cushion frame assembly (10), so as to pull the lifting frame assembly (30) to lift it.

9. The vehicle seat according to claim 8, characterized in that: The pulling assembly (40) comprises a pull cable (44) connected to the lower end (21) of the backrest frame assembly (20) and a blocking member (45) provided on the lifting frame assembly (30); The end of the pull cable (44) passes through the blocking member (45) and is connected to a limit head (441), and a spacing is left between the limit head (441) and the blocking member (45) to form the moving stroke. After the end of the pull cable (44) connected to the backrest frame assembly (20) rotates to a set angle as the backrest frame assembly (20), the limit head (441) is pulled through the moving stroke and contacts the blocking member (45), thereby pulling the lifting frame assembly (30) through the blocking member (45) to be lifted; One end of the first restoring member (51) is connected to the limit head (441) of the cable (44), and the other end of the first restoring member (51) is connected to the cushion side panel (12) or the seat basin on the automobile seat.

10. The vehicle seat according to claim 9, characterized in that The seat cushion frame assembly (10) is provided with a fixing bracket (34) corresponding to the cable (44); The pull cable (44) is clamped on the fixing bracket (34).

11. The vehicle seat according to claim 9, characterized in that The backrest frame assembly (20) is provided with a guide groove (22) corresponding to the cable (44); The corresponding portion of the pull cable (44) is inserted into the guide groove (22).

12. The vehicle seat according to claim 1, wherein: It also includes a second reset member (52) having one end connected to the lifting frame assembly (30), and the other end of the second reset member (52) is connected to the vehicle body, the base (70) of the vehicle seat, the connecting slide rail of the vehicle seat or the front connecting rod.

13. The vehicle seat according to claim 1, wherein: It also includes a limiting frame (53) connected to the seat cushion frame assembly (10), wherein a portion of the limiting frame (53) is located above the lifting frame assembly (30) to form a limiting portion (531), and the lifting height of the lifting frame assembly (30) is limited by the limiting portion (531).

Images