Car seats and cars

Abstract

This invention provides an automotive seat and an automotive vehicle, including a backrest side panel, a seat cushion side panel, an adjuster assembly, and a slide rail assembly. The adjuster assembly is disposed at the connection between the backrest side panel and the seat cushion side panel, and further includes a backrest limiting block, a movable locking block, and a shifting unit. The backrest limiting block is mounted on the backrest side panel. One end of the movable locking block is connected to the shifting unit, and the other end is mutually limited by the backrest limiting block. The shifting unit is connected to the slide rail assembly and the movable locking block. When the relative position between the seat cushion side panel and the slide rail assembly changes, the shifting unit adjusts the angle adjustment limit position of the movable locking block and the backrest limiting block. This invention provides an automotive seat that solves the problem that the angle adjustment limit position of existing automotive seats is fixed, preventing the realization of maximum usable space within a limited space.

Description

Technical Field

[0001] This invention belongs to the field of automotive body parts technology, specifically relating to an automotive seat and an automotive. Background Technology

[0002] With the rapid development of the automobile market and the continuous improvement of people's living standards, people have higher and higher requirements for the comfort of their means of transportation. The comfort of means of transportation is mainly reflected in the car seats. In order to meet the needs of comfort, the seats integrate functions such as fore-and-aft adjustment, lateral adjustment and backrest adjustment.

[0003] In most car models, the limit position of the seat back angle adjustment is usually limited by a hard stop point. This limit is achieved by the compression between the backrest frame structure and the seat cushion frame structure. There is only one hard stop point for the limit position, and its limit position is fixed, making it impossible to adjust multiple limit angles.

[0004] In some MPV models, the second-row seats can be adjusted both laterally and fore-aft. When the position of the second-row seats changes, the space between them and the third-row seats also changes. Currently, few models on the market allow for extreme adjustment of the second-row seats, which prevents full utilization of rear space and hinders a better user experience. For example, in typical five- or seven-seater models, adjusting the front seats fore-aft also changes the distance and space between them and the rear seats. When the front seats are moved forward, the distance between them and the rear seats increases, but the extreme adjustment position of the front seats remains fixed, failing to fully utilize the space and providing a better user experience. Summary of the Invention

[0005] This invention provides a car seat and a car to solve the problem that the angle adjustment limit position of existing car seats is fixed, which cannot achieve the maximum usable space in a limited space.

[0006] A car seat includes a backrest side panel, a seat cushion side panel, an adjuster assembly, and a slide rail assembly. The adjuster assembly is disposed at the connection between the backrest side panel and the seat cushion side panel. The car seat also includes a backrest limiting block, a movable locking block, and a shifting unit.

[0007] The backrest limiting block is installed on the backrest side panel;

[0008] One end of the movable locking block is connected to the shifting unit, and the other end is mutually limited by the backrest limiting block;

[0009] The shifting unit is connected to the slide rail assembly and the movable locking block. When the relative position between the seat cushion side plate and the slide rail assembly changes, the shifting unit adjusts the angle limit position of the movable locking block and the backrest limiting block to limit each other.

[0010] Preferably, the shifting unit includes a slide groove, a shifting block, and a first cable;

[0011] The slide groove is fixedly mounted on the angle adjuster assembly, and the slide groove is provided with a first slide channel;

[0012] The shift block is slidably connected to the first slide rail, and the movable locking block is connected to the shift block. When the shift block moves along the first slide rail, the shift block adjusts the angle limit position of the movable locking block and the backrest limiting block to limit each other.

[0013] One end of the first cable is connected to the slide rail assembly, and the other end is connected to the shift block. When the seat side plate moves relative to the slide rail assembly, it drives the shift block to move along the first slide rail.

[0014] Preferably, the slide groove is provided with at least two stop slots, and the at least two stop slots are distributed along the direction of the first slide groove;

[0015] The shift block has a shift groove, which is formed on the side of the shift block;

[0016] The movable locking block includes a locking block body and a locking pin; one end of the locking block body is mutually limited with the backrest limiting block, and the other end is disposed in the shift block; the locking pin is fixedly disposed on the locking block body, the locking pin passes through the shift groove, and when the locking block body moves along the first slide, the locking pin is engaged in the shift groove.

[0017] Preferably, the chute includes two first side plates, a first outer arc plate, and a first inner arc plate, the two first side plates, the first outer arc plate, and the first inner arc plate together forming an arc-shaped annular channel;

[0018] The two first slide rails are respectively disposed on the opposite surfaces of the first outer arc plate and the first inner arc plate, and the two first slide rails are arc-shaped slide rails with the same curvature as the first outer arc plate and the first inner arc plate;

[0019] The first outer arc plate has a first outer through groove in the radial direction, and the first inner arc plate has a first inner through groove in the radial direction. The first outer through groove and the first inner through groove are arranged opposite to each other, and the locking block body passes through the first outer through groove and the first inner through groove in the radial direction.

[0020] At least two of the stop slots are located on the inner side of the same first side plate and are distributed in an arc shape with respect to the axis of the first slide.

[0021] Preferably, the shift block is disposed in the slide groove and includes two second side plates, a second outer arc plate and a second inner arc plate, the two second side plates, the second outer arc plate and the second inner arc plate forming an arc-shaped annular channel;

[0022] The second outer arc plate and the second inner arc plate are slidably connected to the first slide rail;

[0023] The second outer arc plate has a second outer through groove in the radial direction, and the second inner arc plate has a second inner through groove in the radial direction. The second outer through groove and the second inner through groove are arranged opposite to each other, and the locking block body passes through the second outer through groove and the second inner through groove in the radial direction.

[0024] The shift groove is formed on the second side plate.

[0025] Preferably, the two ends of the shift groove are a first limiting part and a second limiting part, respectively;

[0026] The first limiting part and the second limiting part are smoothly connected;

[0027] The radial width of the first limiting part is greater than the radial width of the second limiting part, and the distance between the bottom of the first limiting part and the axis of the first slide is less than the distance between the bottom of the second limiting part and the axis of the first slide.

[0028] Preferably, the car seat further includes an unlocking unit, which includes a motion unlocking block, an operating component, and a cable assembly;

[0029] The operating components are disposed on the side panel of the seat cushion;

[0030] One end of the cable assembly is connected to the operating component, and the other end is connected to the movable locking block through the motion unlocking block. The cable assembly is used to unlock the movable locking block when the operating component is operated.

[0031] The motion unlocking block is slidably connected to the shift block, and the motion unlocking block is connected to the movable locking block for unlocking the movable locking block. The movable locking block has an unlocking groove on its side corresponding to the shift groove, and the locking pin passes through the unlocking groove.

[0032] Preferably, the motion unlocking block includes two third side plates, a third outer arc plate, and a third inner arc plate;

[0033] The motion unlocking block is slidably connected to the shift block via the third outer arc plate and the third inner arc plate;

[0034] The third outer arc plate and the third inner arc plate are respectively provided with a third outer through groove and a third inner through groove in the radial direction. The third outer through groove and the third inner through groove are arranged opposite to each other. The locking block body passes through the third outer through groove and the third inner through groove in the radial direction.

[0035] The unlocking slot is located on the third side plate.

[0036] Preferably, the two ends of the unlocking groove are a third limiting part and a fourth limiting part, respectively;

[0037] The third limiting part and the fourth limiting part are smoothly connected;

[0038] The radial width of the third limiting part is equal to the radial width of the fourth limiting part, and the distance between the third limiting part and the axis of the first slide is less than the distance between the fourth limiting part and the axis of the first slide.

[0039] Preferably, the unlocking unit further includes a reset component;

[0040] The reset component is connected to the motion unlocking block and is used to move the motion unlocking block to its initial position.

[0041] Preferably, the reset assembly includes a spring retainer and a preload spring;

[0042] The spring retainer is mounted on the angle adjuster assembly;

[0043] One end of the pre-tension spring is connected to the spring fixing seat, and the other end of the pre-tension spring is connected to the motion unlocking block. The pre-tension spring is in a stretched state and is used to move the motion unlocking block to the initial position.

[0044] Preferably, the operating component is a slide rail unlocking handle, and the cable assembly includes a second cable;

[0045] One end of the second cable is connected to the slide rail unlocking handle, and the other end of the second cable is connected to the motion unlocking block. When the slide rail unlocking handle is operated, the second cable drives the motion unlocking block to move.

[0046] Preferably, the backrest limiting block includes a limiting side plate, a limiting bottom plate, and a limiting slot;

[0047] The limiting side plate can be detachably installed on the backrest side plate;

[0048] The limiting base plate is fixedly connected to the limiting side plate, and the limiting base plate is arc-shaped;

[0049] The limiting slot is disposed at the end of the limiting base plate and is used to limit the movement of the movable locking block.

[0050] An automobile, including the aforementioned automobile seat.

[0051] In the aforementioned car seats and vehicles, a shift unit is installed on the seat adjuster assembly, and a backrest limiting block is fixedly installed on the side panel of the seat back. When the side panel moves relative to the slide rail assembly, it drives a movable locking block to move. When the movable locking block is in different positions, it limits the backrest limiting block, thereby restricting different adjustment limits of the seat back. In other words, adjusting the shift unit adjusts the adjustment limits of the seat back, allowing the adjustment limits to change with the seat position, thus improving the utilization of interior space. The shift unit can switch to different gears, meaning the adjustment limits of the seat back change with the seat position. When the car seat is reclined, the adjustment limits of the seat back fully utilize the rear space changed by the seat position adjustment, thereby increasing the range of backrest angle adaptation, maximizing interior space utilization, providing passengers with a better riding experience, and enhancing product competitiveness. Attached Figure Description

[0052] Figure 1 This is one of the overall structural schematic diagrams of the car seat in this invention;

[0053] Figure 2 This is the second schematic diagram of the overall structure of the car seat in this invention;

[0054] Figure 3 This is a partial front view schematic diagram of the car seat structure in this invention;

[0055] Figure 4 This is one of the front view structural schematic diagrams of the shifting unit in this invention;

[0056] Figure 5 This is the second front view structural schematic diagram of the shifting unit in this invention;

[0057] Figure 6 This is a partial cross-sectional structural diagram of the shifting unit in this invention;

[0058] Figure 7 This is a schematic diagram of the overall structure of the backrest limiting block in this invention;

[0059] Figure 8 This is a schematic diagram of the overall structure of the movable locking block in this invention;

[0060] Figure 9 This is one of the overall structural schematic diagrams of the motion unlocking block in this invention;

[0061] Figure 10 This is the second schematic diagram of the overall structure of the motion unlocking block in this invention;

[0062] Figure 11 This is one of the overall structural schematic diagrams of the shift block in this invention;

[0063] Figure 12 This is the second schematic diagram of the overall structure of the shift block in this invention;

[0064] Figure 13 This is a schematic diagram of the overall structure of the chute in this invention;

[0065] Figure 14 This is a front view cross-sectional structural diagram of the slide groove in this invention;

[0066] Figure 15 This is a front view cross-sectional structural diagram of the chute according to another embodiment of the present invention.

[0067] in,

[0068] 1. Backrest side panels;

[0069] 2. Seat cushion side panels;

[0070] 3. Angle adjuster assembly; 31. Lower connecting plate of angle adjuster; 32. Angle adjuster linkage rod;

[0071] 4. Slide rail assembly;

[0072] 5. Backrest limiting block; 51. Limiting side plate; 52. Limiting bottom plate; 53. Limiting slot;

[0073] 6. Movable locking block; 61. Locking block body; 62. Locking pin;

[0074] 7. Gear shifting unit; 71. Slide groove; 711. First gear position slot; 712. Second gear position slot; 713. Inclined guide structure; 714. First side plate; 715. First outer arc plate; 716. First inner arc plate; 717. First outer through groove; 718. First inner through groove; 719. First outer rail; 710. First inner rail; 72. Gear shifting block; 721. Gear shifting groove; 7211. First limiting part; 7212. Second limiting part; 722. Second side plate; 723. Second outer arc plate; 724. Second inner arc plate; 725. Second outer through groove; 726. Second inner through groove; 727. Second outer rail; 728. Second inner rail; 73. First cable;

[0075] 8. Unlocking unit; 81. Motion unlocking block; 811. Unlocking groove; 8111. Third limiting part; 8112. Fourth limiting part; 812. Third side plate; 813. Third outer arc plate; 814. Third inner arc plate; 815. Third outer through groove; 816. Third inner through groove; 82. Operating component; 821. Slide rail unlocking handle; 822. Slide rail unlocking handle; 823. Slide rail unlocking assembly; 83. Cable assembly; 831. Second cable; 832. Third cable; 833. Fourth cable; 84. Reset component; 841. Spring fixing seat; 842. Preload spring. Detailed Implementation

[0076] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0077] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0078] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0079] This invention provides a car seat; please refer to the following embodiment. Figure 1 and Figure 2The car seat includes a backrest side panel 1, a seat cushion side panel 2, an adjuster assembly 3, and a slide rail assembly 4. The adjuster assembly 3 is located at the connection between the backrest side panel 1 and the seat cushion side panel 2, and also includes a backrest limiting block 5, a movable locking block 6, and a shifting unit 7. The backrest limiting block 5 is installed on the backrest side panel 1. One end of the movable locking block 6 is connected to the shifting unit 7, and the other end is mutually limited by the backrest limiting block 5. The shifting unit 7 is connected to the slide rail assembly 4 and the movable locking block 6. When the relative position between the seat cushion side panel 2 and the slide rail assembly 4 changes, the shifting unit 7 adjusts the angle adjustment limit position of the movable locking block 6 and the backrest limiting block 5.

[0080] As an example, the seat frame includes a seat cushion frame and a backrest frame. The seat cushion side panels 2 are located on both sides of the seat cushion frame, and the backrest side panels 1 are located on both sides of the backrest frame. A slide rail assembly 4 is located below the seat cushion frame. The seat cushion frame can move on the slide rail assembly 4, causing the seat cushion side panels 2 to slide relative to the slide rail assembly 4, thereby changing the relative position between the seat cushion side panels 2 on both sides of the seat cushion frame and the slide rail assembly 4. The backrest limiting block 5 is connected to the backrest side plate 1 by fasteners or directly welded to the backrest side plate 1; the lower connecting plate 31 of the angle adjuster assembly 3 is connected to the backrest side plate 1 by fasteners or directly welded to the backrest side plate 1, and the lower connecting plate 31 of the angle adjuster is fixedly installed on the seat cushion side plate 2. The backrest side plates 1 on both sides of the backrest frame and the seat cushion side plates 2 on both sides of the seat cushion frame adopt the same structure. The two angle adjuster assemblies 3 are connected by the angle adjuster linkage rod 32, so that the two backrest side plates 1 are linked when adjusting the angle, so that the backrest frame can adjust the angle, that is, the angle between the seat cushion side plate 2 and the backrest side plate 1 can be adjusted by the angle adjuster assembly 3. When the backrest side panel 1 is adjusted, the backrest limiting block 5 and the movable locking block 6, which are fixed to the backrest side panel 1, move relative to each other. During this relative movement, the backrest limiting block 5 and the movable locking block 6 will interfere with each other at a certain position, i.e., they will come into contact. Therefore, the limit position of the seat backrest adjustment is the position when the backrest limiting block 5 and the movable locking block 6 come into contact. The shifting unit 7 is connected to the slide rail assembly 4 and the movable locking block 6. When the seat cushion side panel 2 moves relative to the slide rail assembly 4, it drives the movable locking block 6 to move. By changing the position of the movable locking block 6 through the shifting unit 7, the limit position of the seat backrest adjustment is changed. The shifting unit 7 can adjust the position of the movable locking block 6. When the movable locking block 6 reaches a certain position, it can be fixed in that position. Since the adjustment of the seat backrest is an angular adjustment, the limit position of the adjustment can also be called the limit angle of adjustment.

[0081] In this embodiment, a shifting unit 7 is provided on the car seat adjuster assembly 3, and a backrest limiting block 5 is fixedly provided on the backrest side panel 1 of the car seat. When the seat cushion side panel 2 moves relative to the slide rail assembly 4, it drives the movable locking block 6 to move. When the movable locking block 6 is in different positions, the movable locking block 6 limits the backrest limiting block 5, thereby limiting different adjustment limit positions of the seat back. That is, the adjustment limit position of the seat back can be adjusted by adjusting the shifting unit 7, so that the adjustment limit position of the car seat back changes with the seat position, thereby improving the utilization rate of the interior space.

[0082] As a preferred embodiment, the angle adjustment movement of the backrest frame, the movement of the backrest limit block 5, and the movement of the movable locking block 6 are all rotations with the angle adjuster linkage rod 32 as the rotation axis.

[0083] In one embodiment, please refer to Figure 3 and Figure 4 The shifting unit 7 includes a slide groove 71, a shifting block 72, and a first cable 73. The slide groove 71 is fixedly mounted on the angle adjuster assembly 3 and has a first slide rail. The shifting block 72 is slidably connected to the first slide rail, and the movable locking block 6 is connected to the shifting block 72. When the shifting block 72 moves along the first slide rail, the shifting block 72 adjusts the angle adjustment limit position of the movable locking block 6 and the backrest limiting block 5. One end of the first cable 73 is connected to the slide rail assembly 4, and the other end is connected to the shifting block 72. It is used to drive the shifting block 72 to move along the first slide rail when the seat cushion side plate 2 moves relative to the slide rail assembly 4.

[0084] As an example, the shifting unit 7 includes a slide groove 71, a shifting block 72, and a first cable 73. The first slide of the slide groove 71 runs in the same direction as the rotation of the angle adjuster assembly 3. The shifting block 72 is slidably connected to the slide groove 71, and the movable locking block 6 moves synchronously with the shifting block 72. The slide groove 71 is fixedly installed on the angle adjuster assembly 3. The slide groove 71 has a first slide that runs in the same direction as the movement trajectory of the angle adjuster assembly 3. The shape of the first slide is consistent with the rotation trajectory of the angle adjuster assembly 3. The shifting block 72 is located inside the slide groove 71, slidably connected to the first slide of the slide groove 71, and moves along the first slide. The shape of the shifting block 72 is also adapted to the first slide of the slide groove 71. One end of the first cable 73 is connected to the slide rail assembly 4, specifically to the clamp or other moving parts of the slide rail assembly 4. The second end of the first cable 73 is connected to the shift block 72, which is used to connect the shift block 72 to the slide rail assembly 4. When the car seat moves on the slide rail assembly 4, the shift block 72 moves accordingly under the action of the first cable 73. In this example, one end of the first cable 73 is connected to the rear end of the shift block 72, and the other end of the first cable 73 is connected to the slide rail assembly 4. When an external force causes the slide rail assembly 4 to work, the slide rail assembly 4 drives the first cable 73 to move, the first cable 73 drives the shift block 72 to move, and the shift block 72 drives the movable locking block 6 to move backward. The movable locking block 6 changes position along the first slide rail. At this time, the angle adjustment limit position of the seat back changes, that is, the angle adjustment limit position has been shifted.

[0085] In this embodiment, when the passenger or driver adjusts the seat position, the slide rail assembly 4 starts to work, the first cable 73 connected to the slide rail assembly 4 is pulled, and the shift block 72 connected to the other end of the first cable 73 is pulled by the first cable 73. The direction of movement of the shift block 72 when it is pulled is to move backward along the first slide track of the slide groove 71. At this time, the movable locking block 6, which is synchronized with the shift block 72, moves backward with the shift block 72, and the contact position between the backrest limiting block 5 and the movable locking block 6 changes backward, so that the adjustment limit position of the seat backrest changes backward. In other words, the function of changing the adjustment limit position of the seat backrest by adjusting the seat position is realized.

[0086] In the above embodiment, the shift block 72 is slidably disposed inside the slide groove 71. The first slide between the shift block 72 and the slide groove 71 can be lubricated or a rolling device can be added as needed. That is, lubrication or a rolling device can be added between the shift block 72 and the first slide between the slide groove 71. The rolling device can be multiple balls or rollers.

[0087] In one embodiment, please refer to Figure 8 and Figure 14The slide groove 71 is provided with at least two gear slots, which are distributed along the direction of the first slide. The shift block 72 is provided with a shift groove 721, which is located on the side of the shift block 72. The movable locking block 6 includes a locking block body 61 and a locking pin 62. One end of the locking block body 61 is mutually limited with the backrest limiting block 5, and the other end is disposed in the shift block 72. The locking pin 62 is fixedly disposed on the locking block body 61 and passes through the shift groove 721. When the locking block body 61 moves along the first slide, the locking pin 62 engages with the gear slot.

[0088] As an example, at least two gear shift slots are provided on one side wall inside the slide groove 71, distributed along the first slide path of the slide groove 71; a locking pin 62 is provided on the locking block body 61, and the end of the locking pin 62 extends beyond the shift groove 721 on the side of the shift block 72 by a certain distance, so that the end of the locking pin 62 can be inserted into the shift groove 721; the depth of the gear shift slot is relatively shallow, and the end of the locking pin 62 can fall into the gear shift slot, which can lock the movable locking block 6, or the locking block body 61 can be pulled by external force to pull the end of the locking pin 62 out of the gear shift slot.

[0089] As an example, the gear shift slot can be a first gear shift slot 711, which is a circular hole. (See reference...) Figure 8 and Figure 14 After the angle adjustment limit position is completed, the seat back moves backward, which can push the movable locking block 6 to the corresponding first position slot 711 position of the slide groove 71. Then, the locking pin 62 is inserted into the first position slot 711 of the slide groove 71 along with the guide of the first position slot 711 to complete the locking. When the seat back is adjusted backward to a certain angle, the backrest limiting block 5 interferes with the movable locking block 6, which plays the role of limit limiting.

[0090] As another example, see Figure 15 The gear position slot can be a second gear position slot 712. The outer circular wall of the second gear position slot 712 is provided with a ramp guide structure 713. This ramp guide structure 713 can facilitate the smooth entry of the locking pin 62 into or out of the second gear position slot 712. After the angle adjustment limit position is completed, the seat back moves backward, which can push the movable locking block 6 to the corresponding position of the first gear position slot 711 in the slide groove 71. Then, the locking pin 62 moves smoothly along the ramp guide structure 713 into the second gear position slot 712 to complete the locking. When the seat back is adjusted backward to a certain angle, the backrest limiting block 5 interferes with the movable locking block 6, which plays a limit limiting role.

[0091] In one embodiment, please refer to Figure 13The slide 71 includes two first side plates 714, a first outer arc plate 715, and a first inner arc plate 716, which together form an arc-shaped annular channel. Two first slide rails are respectively disposed on the opposite surfaces of the first outer arc plate 715 and the first inner arc plate 716, and the two first slide rails are arc-shaped slide rails with the same curvature as the first outer arc plate 715 and the first inner arc plate 716. The first outer arc plate 715 has a first outer through groove 717 in the radial direction, and the first inner arc plate 716 has a first inner through groove 718 in the radial direction. The first outer through groove 717 and the first inner through groove 718 are disposed opposite to each other, and the locking block body 61 passes through the first outer through groove 717 and the first inner through groove 718 in the radial direction. At least two stop slots are located on the inner surface of the same first side plate 714 and are distributed in an arc shape with the axis of the first slide rail.

[0092] As an example, the movement trajectory of the angle adjuster assembly 3 is an arc-shaped trajectory with the angle adjuster linkage 32 as the axis. Therefore, the overall shape of the slide 71 is also arc-shaped, that is, the two first side plates 714, the first outer arc plate 715, and the first inner arc plate 716 together form an arc-shaped annular channel. The slide 71 is hollow inside and has an inner slide rail, i.e., the first slide rail, on its inner side. Figure 13 As shown, the first slide rail includes a first outer track 719 and a first inner track 710. The first outer track 719 is located below the first outer arc plate 715, while the first inner track 710 is located above the first inner arc plate 716. The first outer track 719 and the first inner track 710 are positioned opposite each other and have the same curvature. The locking block body 61 passes through the first outer through groove 717 and the first inner through groove 718 from top to bottom. The locking pin 62 on the locking block body 61 can be inserted into the stop slot on the inner side of the first side plate 714 to complete the locking operation. At least two stop slots are located on the inner side of the same first side plate 714 and are distributed in an arc shape around the axis of the first slide rail, which can facilitate the insertion of the locking pin 62 into different stop slots to achieve different angle adjustments.

[0093] In one embodiment, please refer to Figure 11 and Figure 12 The shift block 72 includes two second side plates 722, a second outer arc plate 723, and a second inner arc plate 724. The two second side plates 722, the second outer arc plate 723, and the second inner arc plate 724 together form an arc-shaped annular channel. The second outer arc plate 723 and the second inner arc plate 724 are slidably connected to a first slide rail. The second outer arc plate 723 has a second outer through groove 725 in the radial direction, and the second inner arc plate 724 has a second inner through groove 726 in the radial direction. The second outer through groove 725 and the second inner through groove 726 are arranged opposite to each other. The locking block body 61 passes through the second outer through groove 725 and the second inner through groove 726 in the radial direction. The shift groove 721 is formed on the second side plate 722.

[0094] As an example, the shift block 72 is an arc-shaped annular channel, located inside the slide groove 71. The outer side of the shift block 72 is provided with an outer slide rail, namely a second outer arc plate 723 and a second inner arc plate 724. Figure 13 The first slide rail shown includes a first outer track 719 and a first inner track 710. A second outer arc plate 723 is slidably connected to the first outer track 719, and a second inner arc plate 724 is slidably connected to the first inner track 710. The slide groove 71 and the shift block 72 have the same curvature and are matched to each other and can slide relative to each other. The locking block body 61 passes through the second outer through groove 725 and the second inner through groove 726 from top to bottom. The locking pin 62, which is fixed on the locking block body 61, passes out of the shift groove 721 from the locking block body 61 and is then fixed by the shift slot.

[0095] In this embodiment, both the shift block 72 and the slide groove 71 are provided with vertically penetrating grooves, that is, grooves that radially penetrate the shift block 72 and the slide groove 71. The locking block body 61 penetrates the grooves of the shift block 72 and the slide groove 71 in the radial direction. The locking block body 61 is provided with a locking pin 62 that can pass through the shift groove 721 and match the gear position slot, so that the movable locking block 6 moves with the shift block 72.

[0096] In one embodiment, please refer to Figure 11 and Figure 12 The shift groove 721 has a first limiting part 7211 and a second limiting part 7212 at its two ends; the first limiting part 7211 and the second limiting part 7212 are smoothly connected; the radial width of the first limiting part 7211 is greater than the radial width of the second limiting part 7212, and the distance between the bottom of the first limiting part 7211 and the axis of the first slide rail is less than the distance between the second limiting part 7212 and the axis of the first slide rail. Here, the radial width refers to the width along the radial direction of the arc-shaped shift groove 721, where the top and bottom refer to the radially outward and inward portions of the shift groove 721, respectively.

[0097] As an example, in order to partially drive the up-and-down movement of the movable locking block 6 by moving the shift block 72 back and forth, a shift groove 721 is provided on at least one side of the shift block 72. Since the shift block 72 has a through groove inside for accommodating the movable locking block 6, the shift groove 721 extends through the side of the shift block 72, and the end of the locking pin 62 of the movable locking block 6 protrudes from the shift groove 721. The shift groove 721 has an integral shape that is larger at the rear end and smaller at the front end. Specifically, the shift groove 721 is... The rear end of 21 is a first limiting part 7211 and the front end is a second limiting part 7212. The radial width of the first limiting part 7211 is greater than the radial width of the second limiting part 7212. For example, the radial width of the first limiting part 7211 is greater than twice the diameter of the locking pin 62, and the width of the second limiting part 7212 is greater than once the diameter of the locking pin 62 and less than twice the diameter of the locking pin 62. The radial width of the first limiting part 7211 is greater than the radial width of the second limiting part 7212. When the locking pin 62 is located at the bottom of the first limiting part 7211, the distance between the end face of the locking pin 62 and the axis of the angle adjuster linkage 32 is equal to the distance between the gear position slot and the axis of the angle adjuster linkage 32, that is, the locking pin 62 is located on the distribution arc of the multiple gear position slots; when the locking pin 62 is located at the second limiting part 7212, the position of the locking pin 62 is higher than the distribution arc of the multiple gear position slots, so that the locking pin 62 can disengage from the gear position slot and slide along the guide of the shift groove 721 to the second limiting part 7212, so that the locking pin 62 changes from the locked state to the unlocked state. The distance between the bottom of the first limiting part 7211 and the center of the first slide rail is less than the distance between the second limiting part 7212 and the center of the first slide rail, so that when the locking pin 62 slides from the first limiting part 7211 to the second limiting part 7212, the distance between the locking pin 62 and the center of the first slide rail gradually increases, so as to achieve the unlocking effect; the first limiting part 7211 and the second limiting part 7212 are smoothly connected by a curve.

[0098] In this embodiment, when the passenger or driver adjusts the seat position, the slide rail assembly 4 starts working, the first cable 73 is pulled, and the shift block 72 is pulled by the first cable 73. At this time, the movable locking block 6 moves backward with the shift block 72 under the force of the locking pin 62. The contact position between the backrest limiting block 5 and the movable locking block 6 changes backward, realizing the function of changing the adjustment limit position of the seat backrest by adjusting the seat position. During the movement of the movable locking block 6 with the shift block 72, the locking pin 62 of the movable locking block 6 can change its height relative to the axis of the first slide rail as its relative position with the shift groove 721 changes. The locking pin 62 is guided into the shift groove 71 by the shift groove guide and completes the locking. The outer circular wall of the shift groove is provided with a ramp guide structure 713, which can be set according to the shape of the shift groove 721.

[0099] In one embodiment, please refer to Figure 5and Figure 6 The car seat also includes an unlocking unit 8, which includes a motion unlocking block 81, an operating component 82, and a cable assembly 83. The operating component 82 is mounted on the side panel 2 of the seat cushion. One end of the cable assembly 83 is connected to the operating component 82, and the other end is connected to the movable locking block 6 via the motion unlocking block 81. The cable assembly 83 is used to unlock the movable locking block 6 when the operating component 82 is operated. The motion unlocking block 81 is slidably connected to the shift block 72 and is connected to the movable locking block 6 to unlock the movable locking block 6. The side of the movable locking block 6 has an unlocking groove 811 corresponding to the shift groove 721, and the locking pin 62 passes through the unlocking groove 811.

[0100] As an example, the car seat also includes an unlocking unit 8, and the shifting unit 7 includes a motion unlocking block 81 and a cable assembly 83. The motion unlocking block 81 is located at the movable locking block 6. One end of the cable assembly 83 is connected to the motion unlocking block 81, and the other end of the cable assembly 83 is connected to an operating component 82. The cable assembly 83 is used to connect the operating component 82 and the motion unlocking block 81. When the passenger or driver operates the operating component 82, the motion unlocking block 81 moves accordingly under the action of the cable assembly 83.

[0101] In this embodiment, the slide groove 71, the shift block 72, and the motion unlocking block 81 are sequentially slidably nested from the outside in, and both ends of the slide groove 71 and the shift block 72 are transparent, meaning that the innermost motion unlocking block 81 can be seen from one end of the slide groove 71. One end of the first cable 73 in the shift unit 7 passes through the rear end of the slide groove 71 and is connected to the rear end of the shift block 72, while the other end of the first cable 73 is connected to the slide rail assembly 4. One end of the cable assembly 83 of the unlocking unit 8 passes through the rear end of the slide groove 71 and the shift block 72 and is connected to the motion unlocking block 81. The operating component 82 is located on the side of the car seat. When the passenger or driver operates the operating component 82, the cable assembly 83 actuates, causing the locking pin 62 to unlock the movable locking block 6.

[0102] In one embodiment, please refer to Figure 9 and Figure 10 The motion unlocking block 81 includes two third side plates 812, a third outer arc plate 813, and a third inner arc plate 814; the motion unlocking block 81 is slidably connected to the shift block 72 through the third outer arc plate 813 and the third inner arc plate 814; the third outer arc plate 813 and the third inner arc plate 814 are respectively provided with a third outer through groove 815 and a third inner through groove 816 in the radial direction, the third outer through groove 815 and the third inner through groove 816 are arranged opposite to each other, and the locking block body 61 passes through the third outer through groove 815 and the third inner through groove 816 in the radial direction; the unlocking groove 811 is opened on the third side plate 812.

[0103] As an example, the motion unlocking block 81 is disposed in the shift block 72, and a second outer track 727 and a second inner track 728 concentric with the first slide rail of the slide groove 71 are disposed inside the shift block 72 (e.g., Figure 11 As shown, the motion unlocking block 81 is disposed between the second outer track 727 and the second inner track 728 of the shift block 72. The motion unlocking block 81 is slidably connected to the second outer track 727 and the second inner track 728 through the third outer arc plate 813 and the third inner arc plate 814, respectively. Like the shift block 72 and the slide groove 71, the motion unlocking block 81 has vertically penetrating slots, namely the third outer through slot 815 and the third inner through slot 816. In other words, there is a radially penetrating slot through the motion unlocking block 81, the shift block 72, and the slide groove 71, forming a channel in the radial direction through which the motion unlocking block 81, the shift block 72, and the slide groove 71 are disposed. The locking block body 61 is disposed in this channel. The motion unlocking block 81, the shift block 72, and the slide groove 71 can slide relative to each other, and this channel always exists and is not obstructed by the relative movement of the three. The locking block body 61 is disposed radially in the channel through which the motion unlocking block 81, the shift block 72, and the slide groove 71 are disposed.

[0104] In this embodiment, the locking pin 62, which is fixed on the locking block body 61, passes out of the locking block body 61 in sequence through the unlocking groove 811 and the shift groove 721, and then the locking pin 62 is fixed through the shift groove. The movable locking block 6 moves with the movement of the moving unlocking block 81, thereby unlocking the movable locking block 6.

[0105] In one embodiment, please refer to Figure 9 and Figure 10 The unlocking groove 811 has a third limiting part 8111 and a fourth limiting part 8112 at its two ends; the third limiting part 8111 and the fourth limiting part 8112 are smoothly connected; the radial width of the third limiting part 8111 is equal to the radial width of the fourth limiting part 8112, and the distance between the third limiting part 8111 and the axis of the first slide is less than the distance between the fourth limiting part 8112 and the axis of the first slide.

[0106] As an example, in order to partially drive the up-and-down movement of the movable locking block 6 by moving the moving unlocking block 81 back and forth, an unlocking groove 811 is provided on at least one side of the moving unlocking block 81. Since the moving unlocking block 81 has a third external groove 815 and a third internal groove 816 that are vertically connected inside for placing the movable locking block 6, the unlocking groove 811 passes through the side of the moving unlocking block 81, and the end of the locking pin 62 of the movable locking block 6 passes through the unlocking groove 811. The unlocking groove 811 has an overall shape that is low at the rear end and high at the front end. Specifically, the rear end of the unlocking groove 811 is the third limiting part 8111 and the front end is the fourth limiting part 8112. The radial width of the third limiting part 8111 is equal to the radial width of the fourth limiting part 8112, and the radial widths of the third limiting part 8111 and the fourth limiting part 8112 are greater than the diameter of the locking pin 62, so that the locking pin 62 can move between the third limiting part 8111 and the fourth limiting part 8112. When the locking pin 62 is located at the third limiting part 8111, the locking pin 62 is on the distribution arc of the multiple shift slots, and the locking pin 62 is in the locked state. When the locking pin 62 is located at the fourth limiting part 8112, the position of the locking pin 62 is higher than the distribution arc of the multiple shift slots, so that the locking pin 62 is in the unlocked state. The third limiting part 8111 and the fourth limiting part 8112 are smoothly connected by a curve. The locking pin 62 passes through the unlocking groove 811 and the shift groove 721 in sequence.

[0107] In this embodiment, the slide groove 71, the shift block 72, and the motion unlocking block 81 are slidably nested from the outside in. The shift groove 721 of the shift block 72 is opposite to the unlocking groove 811 of the motion unlocking block 81. Specifically, the first limiting part 7211 of the shift groove 721 is opposite to the third limiting part 8111 of the unlocking groove 811, and the second limiting part 7212 of the shift groove 721 is opposite to the fourth limiting part 8112 of the unlocking groove 811. In the locked state, when the passenger or driver operates the operating component 82, the cable component 83 drives the motion unlocking block 81, and due to the shift... The radial width of the first limiting part 7211 of the shift groove 721 of the stop block 72 is greater than the radial width of the second limiting part 7212, giving it room to rise. Therefore, the movable locking block 6 moves upward with the moving unlocking block 81 under the force of the locking pin 62. The locking pin 62 drives the movable locking block 6 to move upward, and the locking pin 62 on the movable locking block 6 disengages from the shift groove, thus unlocking. In this example, during the upward movement of the movable locking block 6, the locking pin 62 moves from the lower part of the first limiting part 7211 to the upper part, and from the third limiting part 8111 to the fourth limiting part 8112.

[0108] In one embodiment, please refer to Figure 6 The unlocking unit 8 also includes a reset component 84; the reset component 84 is connected to the motion unlocking block 81 and is used to move the motion unlocking block 81 to the initial position.

[0109] As an example, since the cable assembly 83 can only provide a pulling force in one direction to the motion unlocking block 81, a reset assembly 84 should also be provided on the other side of the motion unlocking block 81. The reset assembly 84 is used to pull the motion unlocking block 81 from the opposite direction of the cable assembly 83, so that the motion unlocking block 81 returns to its initial position, that is, the farthest position away from the pulling direction of the cable assembly 83.

[0110] In this embodiment, the reset component 84 pulls the motion unlocking block 81 forward, and the motion unlocking block 81 drives the locking pin 62, the movable locking block 6, and the shifting block 72 to move forward. When the angle adjustment limit position is reached, the locking pin 62 is in the second limit part 7212 and the third limit part 8111, and the second limit part 7212 and the third limit part 8111 coincide. At this original angle adjustment limit position, the backrest side plate 1 moves backward and pushes the locking pin 62 of the movable locking block 6 to the foremost stop slot of the slide groove 71, and then inserts into the stop slot of the slide groove 71 with the ramp guide structure 713, thus completing the locking in the original angle adjustment limit position state.

[0111] In one embodiment, please refer to Figure 5 and Figure 6 The reset assembly 84 includes a spring retainer 841 and a preload spring 842. The spring retainer 841 is mounted on the angle adjuster assembly 3. One end of the preload spring 842 is connected to the spring retainer 841, and the other end of the preload spring 842 is connected to the motion unlocking block 81. The preload spring 842 is in a stretched state and is used to move the motion unlocking block 81 to the initial position.

[0112] As an example, the spring fixing seat 841 is fixedly welded to the lower connecting plate 31 of the angle adjuster and is located at the front end of the slide groove 71. One end of the pre-tension spring 842 is installed on the spring fixing seat 841, and the other end of the pre-tension spring 842 passes through the front end of the slide groove 71 and the shift block 72 in sequence and is connected to the motion unlocking block 81.

[0113] In this embodiment, the pre-tension spring 842 pulls the moving unlocking block 81 forward. The moving unlocking block 81 drives the locking pin 62 and simultaneously drives the movable locking block 6 to reset forward. The locking pin 62 drives the shift block 72 forward. At this time, the angle adjustment limit position of the backrest side plate 1 is reset. When the angle adjustment limit position is reached, the locking pin 62 is in the second limit part 7212 and the third limit part 8111. The second limit part 7212 and the third limit part 8111 coincide. In this original angle adjustment limit position, the backrest side plate 1 moves backward and pushes the locking pin 62 of the movable locking block 6 to the position of the foremost stop slot of the slide groove 71. Then, it is inserted into the stop slot of the slide groove 71 with the ramp guide structure 713, completing the locking in the original angle adjustment limit position state.

[0114] In one embodiment, please refer to Figure 2 The operating component 82 is a slide rail unlocking handle 821, and the cable component 83 includes a second cable 831; one end of the second cable 831 is connected to the slide rail unlocking handle 821, and the other end of the second cable 831 is connected to the motion unlocking block 81. When the slide rail unlocking handle 821 is operated, the second cable 831 drives the motion unlocking block 81 to move.

[0115] As an example, the cable assembly 83 also includes a third cable 832 and a fourth cable 833, both of which are located under the car seat. Typically, in addition to the slide rail assembly 4 below, the adjustable car seat also has a slide rail unlocking handle 822 and a slide rail unlocking assembly 823. The slide rail unlocking handle 821 is used to adjust the position of the seat, and the slide rail unlocking handle 822 is used to unlock the seat to adjust its fore-aft position. One end of the fourth cable 833 is connected to the slide rail unlocking handle 821, and the other end of the fourth cable 833 drives the third cable 832 and the second cable 831 respectively. The third cable 832 drives the slide rail unlocking assembly 823 to unlock the lateral slide rail, and the second cable 831 drives the moving unlocking block 81 to move to achieve the unlocking operation.

[0116] As an example, the car seat's slide rail unlocking handle 821 is used to adjust the seat position and is usually located on the side of the seat bottom. Pulling it releases the lock between the seat and the ground, allowing the seat to slide forward and backward. The slide rail unlocking handle 822 is used to adjust the seat's fore-and-aft position and is usually located at the front of the lower part of the seat. Pulling it releases the lock between the seat and the ground, allowing the seat to slide forward or backward. The principle is that the car seat is locked to the base or ground by a device to prevent passengers from shaking during driving. Unlocking the slide rail unlocking handle 822 releases the lock between the seat and the ground, allowing the seat to move forward and backward. The slide rail unlocking assembly 823 is an important component of the seat, mainly used to control the forward and backward sliding of the seat. This assembly includes components such as lateral slide rails, horizontal slide rails, and locking devices. Pulling the handle at the bottom of the seat releases the locking device of the horizontal slide rail. For the lateral slide rail, it is usually equipped with a manual or electric unlocking handle. After pressing the unlocking handle, the seat can move freely forward and backward along the lateral slide rail, just like the horizontal slide rail. In summary, the functions of the slide rail assembly 4, slide rail unlocking handle 821, slide rail unlocking lever 822, and slide rail unlocking assembly 823 are to enable the car seat to adjust forward and backward, and left and right, so as to achieve a more comfortable, safe, and ergonomic seating experience. They are all common seat adjustment mechanisms.

[0117] In one embodiment, please refer to Figure 1 and Figure 7The backrest limiting block 5 includes a limiting side plate 51, a limiting bottom plate 52, and a limiting slot 53; the limiting side plate 51 is detachably installed on the backrest side plate 1; the limiting bottom plate 52 is fixedly connected to the limiting side plate 51, and the limiting bottom plate 52 is arc-shaped; the limiting slot 53 is provided at the end of the limiting bottom plate 52 and is used to limit the movable locking block 6.

[0118] As an example, the backrest side panel 1 is fixedly welded to the side or installed with fasteners to install the backrest limiting block 5. The lower end of the backrest limiting block 5 is provided with a limiting base plate 52. Limiting slots 53 are opened on both sides or the rear side of the limiting base plate 52. The upper part of the movable locking block 6 matches the limiting slots 53. The limiting side plate 51 of the backrest limiting block 5 is detachably installed on the backrest side panel 1 by welding, bolts or other fasteners. The limiting base plate 52 is arc-shaped, and the arc-shaped pivot of the limiting base plate 52 is the axis of the angle adjuster linkage rod 32.

[0119] In this embodiment, when the movable locking block 6 and the backrest limiting block 5 interfere with each other during movement, the movable locking block 6 enters the limiting slot 53 and contacts the limiting slot 53. At this time, the two reach the limit position of the angle adjustment, and the angle of the backrest side plate 1 at this time is the angle adjustment limit in this state.

[0120] The above embodiments of the present invention provide a car seat that includes at least the following two working processes:

[0121] Shifting process: Pull up the slide rail unlocking handle 821. The movement of the slide rail unlocking handle 821 drives the fourth cable 833. The movement of the fourth cable 833 drives the third cable 832 and the second cable 831 respectively. The third cable 832 drives the slide rail unlocking assembly 823 to unlock the slide rail assembly 4. The second cable 831 drives the moving unlocking block 81. The movement of the moving unlocking block 81 drives the locking pin 62 to move upward with the unlocking groove 811 of the moving unlocking block 81. The locking pin 62 drives the movable locking block 6 to move upward. At this time, the unlocking process is completed. With the slide rail assembly 4 unlocked and the shifting mechanism unlocked, the slide rail assembly 4 is moved with the help of external force. 4 drives the first cable 73 to move, the first cable 73 drives the shift block 72 to move, the shift block 72 drives the locking pin 62 and the movable locking block 6 to move backward. At this time, the backrest's extreme angle has been shifted. The shift position is determined by the travel of the slide rail. After the slide rail moves to the position, the slide rail unlocking handle 821 is released. At this time, the slide rail unlocking assembly 823 automatically locks. After the shift is completed, the backrest moves backward and pushes the movable locking block 6 to the corresponding position slot of the slide groove 71. Then, it is inserted into the position slot of the slide groove 71 by the inclined guide structure 713 to complete the locking. When the backrest is adjusted to a certain angle, the backrest limiting block 5 interferes with the movable locking block 6, which plays a limit limiting role.

[0122] Reset process: First, adjust the backrest forward, then pull up the slide rail unlocking handle 821. The movement of the slide rail unlocking handle 821 drives the fourth cable 833. The movement of the fourth cable 833 drives the third cable 832 and the second cable 831 respectively. The third cable 832 drives the slide rail unlocking assembly 823 to unlock the slide rail assembly 4. The second cable 831 drives the moving unlocking block 81. The movement of the moving unlocking block 81 drives the locking pin 62 to move upward with the unlocking groove 811 of the moving unlocking block 81. The locking pin 62 drives the movable locking block 6 to move upward. At this time, the unlocking process is completed. With the help of external force, the slide rail assembly 4 is moved in the original direction. At this time, the second cable 831 is relaxed. The pre-tension spring 842 pulls the moving unlocking block 81 to move. The moving unlocking block 81 drives the locking pin 62 and simultaneously drives the movable locking block 6 to return to its original position. The locking pin 62 drives the shift block 72 to move forward. When the slide rail assembly 4 stops moving, the other mechanisms stop at the same time. At this time, the angle adjustment limit position is reset. When the backrest assembly moves backward, it can push the movable locking block 6 to the corresponding position of the slide groove 71 and then insert it into the position slot of the slide groove 71 along with the ramp guide structure 713 to complete the locking.

[0123] This invention also provides a car, including the aforementioned car seat.

[0124] As an example, the car's seat frame includes a seat cushion frame and a backrest frame. Seat cushion side panels 2 and backrest side panels 1 are respectively located on both sides of the seat cushion frame and backrest frame. A slide rail assembly 4 is located below the seat cushion frame, allowing the seat cushion frame to move on the slide rail assembly 4. A backrest limiting block 5 is connected to the backrest side panel 1 via fasteners or direct welding. The lower connecting plate 31 of the angle adjuster assembly 3 is connected to the backrest side panel 1 via fasteners or directly welded to the backrest side panel 1. The lower connecting plate 31 is fixedly installed on the seat cushion side panel 2. The backrest side panels 1 on both sides of the backrest frame and the seat cushion side panels 2 on both sides of the seat cushion frame adopt the same structure. The two angle adjuster assemblies 3 are connected by an angle adjuster linkage rod 32, causing the two backrest side panels 1 to move in tandem when adjusting the angle, thus allowing the backrest frame to adjust its angle. That is, the angle between the seat cushion side panel 2 and the backrest side panel 1 is adjusted via the angle adjuster assembly 3. When the backrest side panel 1 is adjusted, the backrest limiting block 5 and the movable locking block 6, which are fixed to the backrest side panel 1, move relative to each other. During this relative movement, the backrest limiting block 5 and the movable locking block 6 will interfere with each other at a certain position, i.e., they will come into contact. Therefore, the limit position of the seat backrest adjustment is the position when the backrest limiting block 5 and the movable locking block 6 come into contact. The shifting unit 7 is connected to the slide rail assembly 4 and the movable locking block 6. When the seat cushion side panel 2 moves relative to the slide rail assembly 4, it drives the movable locking block 6 to move. By changing the position of the movable locking block 6 through the shifting unit 7, the limit position of the seat backrest adjustment is changed. The shifting unit 7 can adjust the position of the movable locking block 6. When the movable locking block 6 reaches a certain position, it can be fixed in that position. Since the adjustment of the seat backrest is an angular adjustment, the limit position of the adjustment can also be called the limit angle of adjustment.

[0125] In this embodiment, a shift unit 7 is provided on the car seat angle adjuster assembly 3. The seat back angle adjustment limit can be adjusted by adjusting the shift unit 7. The position of the seat back angle adjustment limit changes with the position of the car seat. When the car seat is reclined, the position of the seat back angle adjustment limit makes full use of the rear space changed by adjusting the seat position, thereby increasing the adaptability range of the backrest angle, maximizing the use of the interior space, providing passengers with a better riding experience, and enhancing product competitiveness. An unlocking unit 8 is also provided. The seat back angle adjustment limit is restored by unlocking the unit 8. It works in conjunction with the shift unit 7 to increase the space where the seat can be used to the maximum extent in the limited space inside the car, and can be restored to its original position to improve comfort.

[0126] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A car seat, comprising a backrest side panel, a seat cushion side panel, an adjuster assembly, and a slide rail assembly, wherein the adjuster assembly is disposed at the connection between the backrest side panel and the seat cushion side panel, characterized in that, The car seat also includes a backrest limiting block, a movable locking block, and a shifting unit; The backrest limiting block is installed on the backrest side panel; One end of the movable locking block is connected to the shifting unit, and the other end is mutually limited by the backrest limiting block; The shifting unit is connected to the slide rail assembly and the movable locking block. When the relative position between the seat cushion side plate and the slide rail assembly changes, the shifting unit adjusts the angle limit position of the movable locking block and the backrest limiting block to limit each other. The shifting unit includes a slide groove and a shifting block; the slide groove is provided with a first slide rail, and the slide groove is provided with at least two gear position slots, the at least two gear position slots being distributed along the direction of the first slide rail; the shifting block is provided with a shifting groove, the shifting groove being formed on the side of the shifting block; The movable locking block includes a locking block body and a locking pin; one end of the locking block body is mutually limited with the backrest limiting block, and the other end is disposed in the shift block; the locking pin is fixedly disposed on the locking block body, the locking pin passes through the shift groove, and when the locking block body moves along the first slide, the locking pin is engaged in the shift groove.

2. The car seat according to claim 1, characterized in that, The shifting unit also includes a first cable; The slide is fixedly mounted on the angle adjuster assembly; The shift block is slidably connected to the first slide rail, and the movable locking block is connected to the shift block. When the shift block moves along the first slide rail, the shift block adjusts the angle limit position of the movable locking block and the backrest limiting block to limit each other. One end of the first cable is connected to the slide rail assembly, and the other end is connected to the shift block. When the seat side plate moves relative to the slide rail assembly, it drives the shift block to move along the first slide rail.

3. The car seat according to claim 2, characterized in that, The shift groove is formed on the side of the shift block.

4. The car seat according to claim 3, characterized in that, The chute includes two first side plates, a first outer arc plate, and a first inner arc plate, which together form an arc-shaped annular channel. The two first slide rails are respectively disposed on the opposite surfaces of the first outer arc plate and the first inner arc plate, and the two first slide rails are arc-shaped slide rails with the same curvature as the first outer arc plate and the first inner arc plate; The first outer arc plate has a first outer through groove in the radial direction, and the first inner arc plate has a first inner through groove in the radial direction. The first outer through groove and the first inner through groove are arranged opposite to each other, and the locking block body passes through the first outer through groove and the first inner through groove in the radial direction. At least two of the stop slots are located on the inner side of the same first side plate and are distributed in an arc shape with respect to the axis of the first slide.

5. The car seat according to claim 3, characterized in that, The shift block is disposed in the slide groove and includes two second side plates, a second outer arc plate and a second inner arc plate. The two second side plates, the second outer arc plate and the second inner arc plate together form an arc-shaped annular channel. The second outer arc plate and the second inner arc plate are slidably connected to the first slide rail; The second outer arc plate has a second outer through groove in the radial direction, and the second inner arc plate has a second inner through groove in the radial direction. The second outer through groove and the second inner through groove are arranged opposite to each other, and the locking block body passes through the second outer through groove and the second inner through groove in the radial direction. The shift groove is formed on the second side plate.

6. The car seat according to claim 5, characterized in that, The two ends of the shift groove are a first limiting part and a second limiting part, respectively; The first limiting part and the second limiting part are smoothly connected; The radial width of the first limiting part is greater than the radial width of the second limiting part, and the distance between the bottom of the first limiting part and the axis of the first slide is less than the distance between the bottom of the second limiting part and the axis of the first slide.

7. The car seat according to claim 3, characterized in that, The car seat also includes an unlocking unit, which includes a motion unlocking block, an operating component, and a cable assembly; The operating components are disposed on the side panel of the seat cushion; One end of the cable assembly is connected to the operating component, and the other end is connected to the movable locking block through the motion unlocking block. The cable assembly is used to unlock the movable locking block when the operating component is operated. The motion unlocking block is slidably connected to the shift block, and the motion unlocking block is connected to the movable locking block for unlocking the movable locking block. The movable locking block has an unlocking groove on its side corresponding to the shift groove, and the locking pin passes through the unlocking groove.

8. The automobile seat according to claim 7, characterized in that, The motion unlocking block includes two third side plates, a third outer arc plate, and a third inner arc plate; The motion unlocking block is slidably connected to the shift block via the third outer arc plate and the third inner arc plate; The third outer arc plate and the third inner arc plate are respectively provided with a third outer through groove and a third inner through groove in the radial direction. The third outer through groove and the third inner through groove are arranged opposite to each other. The locking block body passes through the third outer through groove and the third inner through groove in the radial direction. The unlocking slot is located on the third side plate.

9. The automobile seat according to claim 8, characterized in that, The unlocking groove has a third limiting part and a fourth limiting part at its two ends; The third limiting part and the fourth limiting part are smoothly connected; The radial width of the third limiting part is equal to the radial width of the fourth limiting part, and the distance between the third limiting part and the axis of the first slide is less than the distance between the fourth limiting part and the axis of the first slide.

10. The automobile seat according to claim 7, characterized in that, The unlocking unit also includes a reset component; The reset component is connected to the motion unlocking block and is used to move the motion unlocking block to its initial position.

11. The automobile seat according to claim 10, characterized in that, The reset assembly includes a spring retainer and a preload spring; The spring retainer is mounted on the angle adjuster assembly; One end of the pre-tension spring is connected to the spring fixing seat, and the other end of the pre-tension spring is connected to the motion unlocking block. The pre-tension spring is in a stretched state and is used to move the motion unlocking block to the initial position.

12. The car seat according to claim 7, characterized in that, The operating component is a slide rail unlocking handle, and the cable assembly includes a second cable; One end of the second cable is connected to the slide rail unlocking handle, and the other end of the second cable is connected to the motion unlocking block. When the slide rail unlocking handle is operated, the second cable drives the motion unlocking block to move.

13. The car seat according to claim 1, characterized in that, The backrest limiting block includes a limiting side plate, a limiting bottom plate, and a limiting slot; The limiting side plate can be detachably installed on the backrest side plate; The limiting base plate is fixedly connected to the limiting side plate, and the limiting base plate is arc-shaped; The limiting slot is disposed at the end of the limiting base plate and is used to limit the movement of the movable locking block.

14. A car, characterized in that, Including the car seat as described in any one of claims 1-13.

Images