A sliding lifting and tilting mechanism for a car seat

Abstract

The utility model discloses a kind of sliding lifting turnover mechanism for car seat, including bottom frame, turnover mechanism, auxiliary turnover mechanism, unlocking structure, slide rail assembly, lifting assembly and cushion frame, the bottom frame is close to the side of backrest and is equipped with the turnover mechanism and auxiliary turnover mechanism that can make the bottom frame and seat overall overturn, the other side of the bottom frame is equipped with unlocking structure, the top of the bottom frame is equipped with the slide rail assembly that can make seat move forwards and backwards, the top of the slide rail assembly is equipped with the lifting assembly that can make cushion frame lift, the lifting assembly is connected with cushion frame. The utility model can realize that bottom frame drives seat to overturn to tail pit by the turnover mechanism and auxiliary turnover mechanism of bottom frame rear end two sides, the front and back movement of seat relative to bottom frame is realized by the electric slide rail additionally arranged between bottom frame and cushion frame, the lifting or lowering of seat is realized by the lifting structure additionally arranged between slide rail and cushion frame.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seats, specifically relating to a sliding, lifting, and flipping mechanism for automotive seats. Background Technology

[0002] In the design process of car seats, to meet users' daily loading needs and flexibly expand the storage space in the rear of the car, flipping mechanisms and auxiliary flipping mechanisms are often installed on both sides of the rear seats. When it is necessary to expand the storage space in the rear of the car, the flipping mechanism and auxiliary flipping mechanism drive the rear seats to flip backward into the trunk's rear compartment. However, rear seats with the flipping function often cannot move forward or backward, and the distance between the rear seats and the front seats cannot be adjusted, which greatly affects the riding experience of rear passengers. Furthermore, in order to ensure that the bottom of the rear seats does not exceed the threshold of the trunk after flipping into it, the height of the seat surface from the rear floor is relatively low, which prevents passengers from stretching their legs properly, affecting the riding experience. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned problems and provide a sliding lifting and flipping mechanism for automobile seats. This sliding lifting and flipping mechanism can realize the bottom frame driving the seat to flip backward into the trunk's rear pit through the flipping mechanism and auxiliary flipping mechanism on both sides of the rear end of the bottom frame. The seat can move back and forth relative to the bottom frame by an electric slide rail added between the bottom frame and the seat cushion frame. The lifting structure added between the slide rail and the seat cushion frame can ensure that the passenger's legs can be stretched normally when sitting. When the seat needs to be flipped backward into the trunk's rear pit, its bottom is not higher than the trunk's threshold.

[0004] To achieve the above objectives, this utility model provides a sliding lifting and flipping mechanism for an automobile seat, including a base frame, a flipping mechanism, an auxiliary flipping mechanism, an unlocking structure, a slide rail assembly, a lifting assembly, and a seat cushion frame. The base frame is provided with a flipping mechanism and an auxiliary flipping mechanism on one side near the backrest, which allow the base frame and the seat to flip as a whole. The other side of the base frame is provided with an unlocking structure. The top of the base frame is provided with a slide rail assembly, which allows the seat to move back and forth. The top of the slide rail assembly is provided with a lifting assembly, which allows the seat cushion frame to be raised and lowered. The lifting assembly is connected to the seat cushion frame.

[0005] As a further optimization, the unlocking structure can be flipped relative to the bottom frame and includes a fixed bracket, a pivot, a ground lock, and a return spring. The connecting plate at the top of the fixed bracket is connected to the front crossbeam of the bottom frame. The connecting plate has downwardly bent connecting ears on both sides. The connecting ears on both sides are rotatably connected to the side arms on the ground lock through the pivot. The back of the connecting ears on both sides in the direction of flipping relative to the side arms has an inwardly bent limiting plate. A return spring that can reset the ground lock is sleeved on the pivot between the connecting ears on both sides.

[0006] As a further optimization, the slide rail assembly includes a left slide rail, a right slide rail, a motor bracket, and a lead screw motor. The lower slide rails of the left and right slide rails are bolted to the base frame. The upper slide rails of the left and right slide rails are bolted together with a motor bracket. The motor bracket has a downwardly recessed mounting groove in the middle, and supports on opposite sides of the mounting groove. The lead screw motor is engaged with the mounting groove through the supports on both sides. The lead screws on both sides of the lead screw motor are connected to the sliders in the left and right slide rails. The lead screw motor can drive the sliders to slide back and forth along the lead screws inside the slide rails.

[0007] As a further optimization, the lifting assembly includes a lead screw motor. One end of the lead screw motor is rotatably connected to a motor bracket, which is fixedly connected to the front crossbeam of the base frame. The sleeve at the other end of the lead screw motor is rotatably connected to one end of a rear bracket, and the other end of the rear bracket is fixedly connected to the rear tube at the rear end of the seat frame. The two sides of the rear tube are rotatably connected to the left and right arms of the seat frame via bushings, and are fixedly connected to the corresponding left and right rear connecting rods, respectively. The front ends of the left and right arms are rotatably connected to a front tube via bushings. The two ends of the front tube are fixedly connected to the corresponding left and right front connecting rods, respectively. The left front and left rear connecting rods are rotatably connected to a left L-shaped bracket, and the right front and right rear connecting rods are rotatably connected to a right L-shaped bracket. The left and right L-shaped brackets are connected to the slide rails of the slide rail assembly.

[0008] Advantages and beneficial effects of this utility model 1. This utility model adds a bottom frame to the bottom of the seat cushion frame, and moves the original flipping mechanism and auxiliary flipping mechanism, which were originally located on both sides of the rear end of the seat cushion frame, to both sides of the newly added bottom frame. A slide rail assembly and a lifting assembly are added between the bottom frame and the seat cushion frame. The slide rail assembly can drive the entire seat to slide back and forth relative to the bottom frame, and the lifting assembly can drive the entire seat to be raised and lowered relative to the bottom frame. This solves the problem that seats with flipping function often cannot move back and forth, and at the same time meets the height requirements of passengers when the seat is not flipped, and when flipped, the bottom of the seat is not higher than the threshold of the tail pit.

[0009] 2. This utility model has a simple structure, which meets the current market requirements for lightweight car seats. The sliding rail assembly can increase the sliding stroke of the seat relative to the bottom frame, and the structure is more compact, reducing the space requirements between the seat cushion frame and the bottom frame. During the sliding process, the stability is better and the noise is lower.

[0010] 3. The unlocking structure in this utility model can be flipped relative to the bottom frame to prevent the unlocking structure from being perpendicular to the bottom frame when the seat is flipped into the tail pit of the trunk, thus affecting the storage effect of the trunk.

[0011] 4. This utility model uses a lead screw motor and a four-bar linkage to raise or lower the seat. During normal riding, the seat is raised to improve riding comfort. Before the seat is flipped into the pit, the seat is lowered so that the bottom of the seat after it is flipped into the pit is not higher than the height of the pit threshold. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the 4 / 6 split seat provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the base structure of the 4 / 6 split seat provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the seat cushion frame of the 4 / 6 split seat provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the unlocking structure provided in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the slide rail assembly of the 4 / 6 split seat provided in this embodiment of the utility model; Figure 6 This is a schematic diagram of the lifting assembly provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram illustrating the flipping action of the 4 / 6 split seat provided in this embodiment of the utility model; Figure 8 This is a schematic diagram showing the 4 / 6 split seat connected to the vehicle body according to an embodiment of the present invention; Figure 9 This is a schematic diagram showing the operation of the 4 / 6 split seat connected to the vehicle body according to an embodiment of the present invention.

[0014] Reference numerals: 1. Base frame; 11. Front crossbeam; 111. Connecting groove; 2. Tilting mechanism; 3. Auxiliary tilting mechanism; 4. Unlocking structure; 41. Fixed bracket; 411. Connecting plate; 412. Connecting ear; 413. Limiting plate; 42. Rotating shaft; 43. Ground lock; 431. Side arm; 44. Return spring; 5. Slide rail assembly; 51. Left slide rail; 52. Right slide rail; 53. Motor bracket; 53. Mounting groove; 532. Bracket; 54. Lead screw motor; 541. Lead screw; 6. Lifting assembly; 61. Lead screw motor; 61. Sleeve; 611. Motor bracket; 62. Rear support. Frame 63, Left rear link 64, Right rear link 65, Left front link 66, Right front link 67, Left L-shaped bracket 68, Right L-shaped bracket 69, Seat frame 7, Rear tube 71, Left arm 72, Right arm 73, Front tube 74, Body 8, Rear trough 9, Locking tongue 10, 60% Seat A, 60% Base frame A1, 60% Seat frame A2, 60% Slide rail assembly A3, 60% Backrest A4, 40% Seat B, 40% Base frame B1, 40% Seat frame B2, 40% Slide rail assembly B3 and 40% Backrest B4. Detailed Implementation

[0015] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0016] The sliding lifting and flipping mechanism in this embodiment is applicable to both 4 / 6 split seats and 5 / 5 split seats. The 4 / 6 split seats have a division ratio of 40% and 60%. The 40% seat B includes a 40% base frame B1, a 40% seat cushion frame B2, and a 40% backrest B4. The 60% seat A includes a 60% base frame A1, a 60% seat cushion frame A2, and a 60% backrest A4. When applied to 4 / 6 split seats, two sets of sliding lifting and flipping mechanisms are required. The two sets of mechanisms have the same structure, but their dimensions differ due to the different division ratios of the seats.

[0017] A 5 / 5 split-folding seat divides the seat back into two 50% sections: the base frame is 100%, the seat cushion frame is 100%, and the backrest is divided into two sections, each with a 50% backrest. When used with a 5 / 5 split-folding seat, only one sliding lifting and folding mechanism needs to be installed between the base frame and the seat cushion frame. The following description uses a 4 / 6 split-folding seat as an example.

[0018] like Figure 1 and Figure 8 As shown, a sliding lifting and flipping mechanism for automobile seats is installed on 60% seat A and 40% seat B respectively. Since the two sliding lifting and flipping mechanisms have the same structure, the sliding lifting and flipping mechanism installed on 60% seat A will be described in detail below. It includes a base frame 1, a flipping mechanism 2, an auxiliary flipping mechanism 3, an unlocking structure 4, a slide rail assembly 5, a lifting assembly 6, and a seat cushion frame 7. The left and right sides of the rear end of the base frame 1 are rotatably connected to the rotating shafts on the flipping mechanism 2 and the auxiliary flipping mechanism 3. The flipping mechanism 2 and the auxiliary flipping mechanism 3 are connected to the vehicle body 7 by positioning pins and bolts. The flipping mechanism 2 and the auxiliary flipping mechanism 3 can drive the base frame 1 and the entire seat. The seat flips backward into the rear trunk pit 9. The left and right sides of the front end of the bottom frame 1 are provided with unlocking structures 4 that cooperate with the locking tongue 10 on the body 8. When the seat is flipped, the unlocking structure 4 can flip relative to the bottom frame 1 to prevent the unlocking structure 4 from affecting the storage effect of the trunk after the seat is flipped into the rear trunk pit 9. The top of the bottom frame 1 is provided with a slide rail assembly 5 that allows the seat to move back and forth. The slide rail assembly 5 can improve the stability of the seat sliding and reduce sliding noise, making it easier for passengers to control the movement according to their needs. The top of the slide rail assembly 5 is provided with a lifting assembly 6 that allows the seat cushion frame 7 to be raised and lowered. The lifting assembly 6 is connected to the seat cushion frame 7.

[0019] like Figure 2 As shown, the front end of the bottom frame 1 has a crossbeam 11, and the crossbeam 11 has an upwardly protruding connecting groove 111 at the position opposite to the locking tongue 10. The bottom of the connecting groove 111 is provided with an unlocking structure 4 that can be flipped relative to the crossbeam 11, such as... Figure 4As shown, the unlocking structure 4 includes two fixed brackets 41 connected in the connecting groove 111. The connecting plates 411 at the top of the two fixed brackets 41 are connected to the connecting groove 111 by bolts. The connecting plates 411 have downwardly bent connecting ears 412 on both sides. The connecting ears 412 are rotatably connected to the corresponding side arm 431 of the ground lock 43 via a rotating shaft 42. The back of the connecting ears 412 in the direction of rotation relative to the side arm 431 has an inwardly bent limiting plate 413. A return spring 44, which allows the ground lock 43 to reset, is sleeved on the rotating shaft 42 between the connecting ears 412. The floor lock 43 is connected to the flipping mechanism via a pull rope. When the bottom frame 1 and the seat are flipped into the recess, the flipping mechanism pulls the pull rope. As the pull rope tightens, the floor lock 43 unlocks from the latch 10 and flips relative to the fixed bracket 41, thus retracting the floor lock. Since the connecting groove 111 protrudes upwards, after the seat flips, the bottom frame 1 flips accordingly, causing the protrusion direction of the connecting groove 111 to change from upward protrusion to downward concavity. After flipping, the floor lock 43 will retract into the bottom frame 1, thus not affecting the storage effect of the luggage compartment. See [link to image] for the effect of the seat after flipping into the recess. Figure 7 and Figure 9 .

[0020] See Figure 2 and Figure 5 The electric slide rail 5 includes a left slide rail 51, a right slide rail 52, a motor bracket 53, and a lead screw motor 54. The lower slide rails of the left slide rail 51 and the right slide rail 52 are bolted to the left and right sides of the base frame 1. The lower slide rails of the left slide rail 51 and the right slide rail 52 are slidably connected to the upper slide rail via sliders. The upper slide rails of the left slide rail 51 and the right slide rail 52 are bolted to the lifting assembly 6. The motor bracket 53 is bolted between the upper slide rails of the left slide rail 51 and the upper slide rails of the right slide rail 52. The machine bracket 53 has a downwardly recessed mounting groove 531 in the middle. The mounting groove 531 has brackets 532 on the left and right sides. The lead screw motor 54 is snapped onto the mounting groove 531 through the brackets 532 on both sides. The lead screw motor 54 is connected to the vehicle wiring harness. The lead screws 541 on its left and right sides are connected to the sliders in the left slide rail 51 and the right slide rail 52. The lead screw motor 54 can drive the sliders to slide back and forth along the lead screw inside the slide rail. The slide rail assembly 5 has a relatively compact structure, which reduces the space requirements between the bottom frame 1 and the seat frame 7.

[0021] like Figure 3 and Figure 6As shown, the lifting assembly 6 includes a lead screw motor 61. One end of the lead screw motor 61 is rotatably connected to a motor bracket 62, which is fixedly connected to the front crossbeam 11 of the base frame 1. The sleeve 611 at the other end of the lead screw motor 61 is rotatably connected to one end of a rear bracket 63. The other end of the rear bracket 63 is fixedly connected to the rear tube 71 at the rear end of the seat frame 7. The left and right sides of the rear tube 71 are rotatably connected to the left arm 72 and right arm 73 of the seat frame 7 via bushings, and are respectively fixed to the upper ends of the left rear connecting rod 64 and the right rear connecting rod 65 on the corresponding side. The front ends of the left arm 72 and the right arm 73 are rotatably connected to the front tube 74 via bushings. The left and right ends of the front tube 74 are fixedly connected to the upper ends of the left front connecting rod 66 and the right front connecting rod 67 on the corresponding side. The bottom of the left front connecting rod 66 and the left rear connecting rod 64 are rotatably connected to the left L-shaped bracket 68. The left L-shaped bracket 68 is bolted to the left slide rail 51 of the slide rail assembly 5. The bottom of the right front connecting rod 67 and the right rear connecting rod 65 are rotatably connected to the right L-shaped bracket 69. The right L-shaped bracket 69 is bolted to the right slide rail 52 of the slide rail assembly 5. By controlling the lead screw motor 61 to drive the lead screw to rotate, the sleeve 611 drives the rear tube 71 to rise or fall. Since the left and right ends of the rear tube 71 are rotatably connected to the left arm 72 and the right arm 73 respectively, and are fixedly connected to the left rear connecting rod 64 and the right rear connecting rod 65 on the corresponding side, the seat cushion frame 7 and the four connecting rods on the left and right sides can be rotatably connected to the left L-shaped bracket 68 and the right L-shaped bracket 69, thereby realizing the raising or lowering of the seat.

[0022] Action process

[0023] like Figure 8 As shown, since the flipping mechanism 2 and the auxiliary flipping mechanism 3 do not drive the bottom frame 1 and the seat to flip, the pull rope is in a slack state, and the unlocking structure is locked with the locking tongue 10 on the vehicle body. The passenger can control the slide rail assembly 5 to drive the seat cushion frame 7 to move back and forth relative to the bottom frame 1 to adjust the spacing as needed.

[0024] like Figure 9 As shown, Figure 9 A is a schematic diagram of the chair in its initial position. Before flipping the entire chair over, the backrest needs to be folded forward (see [reference]). Figure 9 b), and then the overall height of the seat is lowered to its lowest position by raising the assembly (see...). Figure 9 c) Finally, the flipping mechanism 2 and the auxiliary flipping mechanism 3 drive the bottom frame 1 and the seat to flip backward into the tail pit. During the flipping process, due to the tightening of the pull rope, the unlocking structure 4 flips relative to the bottom frame, from Figure 9 As can be seen from d, the bottom surface of the seat after it flipped over and entered the pit did not exceed the height of the pit threshold.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. A sliding lifting and flipping mechanism for a car seat, characterized in that: The system includes a base frame (1), a flipping mechanism (2), an auxiliary flipping mechanism (3), an unlocking structure (4), a slide rail assembly (5), a lifting assembly (6), and a seat frame (7). The base frame (1) is provided with a flipping mechanism (2) and an auxiliary flipping mechanism (3) on one side near the backrest, which can flip the base frame (1) and the seat as a whole. The other side of the base frame (1) is provided with an unlocking structure (4). The top of the base frame (1) is provided with a slide rail assembly (5) that can move the seat back and forth. The top of the slide rail assembly (5) is provided with a lifting assembly (6) that can raise and lower the seat frame (7). The lifting assembly (6) is connected to the seat frame (7).

2. The sliding lifting and flipping mechanism for a car seat according to claim 1, characterized in that: The unlocking structure (4) can be flipped relative to the bottom frame (1), including a fixed bracket (41), a rotating shaft (42), a ground lock (43) and a reset spring (44). The connecting plate (411) at the top of the fixed bracket (41) is connected to the front crossbeam (11) of the bottom frame (1). The connecting plate (411) has downwardly bent connecting ears (412) on both sides. The connecting ears (412) on both sides are rotatably connected to the side arm (431) on the ground lock (43) through the rotating shaft (42). The back of the connecting ears (412) on both sides in the flipping direction relative to the side arm (431) has an inwardly bent limiting plate (413). The rotating shaft (42) between the connecting ears (412) on both sides is fitted with a reset spring (44) that can reset the ground lock (43).

3. The sliding lifting and flipping mechanism for a car seat according to claim 1, characterized in that: The slide rail assembly (5) includes a left slide rail (51), a right slide rail (52), a motor bracket (53), and a lead screw motor (54). The lower slide rails in the left slide rail (51) and the right slide rail (52) are bolted to the bottom frame (1). The upper slide rails in the left slide rail (51) and the right slide rail (52) are bolted together with a motor bracket (53). The motor bracket (53) has a downward recessed mounting groove (531) in the middle. The mounting groove (531) has brackets (532) on both sides. The lead screw motor (54) is engaged with the mounting groove (531) through the brackets (532) on both sides. The lead screws (541) on both sides of the lead screw motor (54) are connected to the sliders in the left slide rail (51) and the right slide rail (52). The lead screw motor (54) can drive the sliders to slide back and forth along the lead screw inside the slide rail.

4. The sliding lifting and flipping mechanism for a car seat according to claim 1, characterized in that: The lifting assembly (6) includes a lead screw motor (61), one end of which is rotatably connected to a motor bracket (62). The motor bracket (62) is fixedly connected to the front crossbeam (11) of the base frame (1). The sleeve (611) at the other end of the lead screw motor (61) is rotatably connected to one end of a rear bracket (63). The other end of the rear bracket (63) is fixedly connected to the rear tube (71) at the rear end of the seat frame (7). The two sides of the rear tube (71) are rotatably connected to the left arm (72) and right arm (73) of the seat frame (7) through bushings, and respectively connected to the corresponding side. The left rear link (64) and the right rear link (65) are fixedly connected. The front ends of the left arm (72) and the right arm (73) are rotatably connected to the front tube (74) through bushings. The two ends of the front tube (74) are fixedly connected to the left front link (66) and the right front link (67) on the corresponding side. The left front link (66) and the left rear link (64) are rotatably connected to the left L-shaped bracket (68). The right front link (67) and the right rear link (65) are rotatably connected to the right L-shaped bracket (69). The left L-shaped bracket (68) and the right L-shaped bracket (69) are connected to the slide rail of the slide rail assembly (5).

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