An airflow-distributing neck-ventilated vehicle seat

Abstract

The present invention discloses an air flow distribution type neck ventilation vehicle seat, which relates to the technical field of vehicle seats and includes a seat cushion, a backrest and a headrest. A wind guiding part and an air guiding pipe are arranged on the backrest. An air supply mechanism is arranged inside the backrest, and the air guiding pipe and the wind guiding part are connected to the air supply mechanism. The bottom of the headrest is connected with a blowing cover through a lifting mechanism, and the side wall of the blowing cover is slidably connected with an air outlet arranged in a U shape. For this air flow distribution type neck ventilation vehicle seat, it is convenient to automatically adjust the air volume of the air outlet. When the head of the occupant is separated from the headrest, the air volume of the air outlet becomes larger. When the head of the occupant leans on the headrest, the air volume of the air outlet becomes smaller. When the head of the occupant leans on the headrest and deflects to both sides, the air outlet can be automatically moved and adjusted to the deflected side. It can make the air blown out from the air outlet form a sweeping effect.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly to an air-flow-distributed neck-ventilated vehicle seat. Background Art

[0002] In recent years, a comfort system with a seat air-conditioning ventilation device has gradually been recognized by the market as a high-end application of vehicle comfort technology. By directly blowing or sucking air through a ventilation circuit inside the seat by a fan power module inside the vehicle body, its active seat cooling or heating ventilation can bring a more direct and rapid ride comfort to passengers. Taking a traditional suction-type ventilated seat as an example, air in the environment enters a suction fan through multiple ventilation holes in the seat foam, and under the drive of the rotation of the impeller of the suction fan, the gas is discharged through an exhaust port, realizing the air exchange on the occupant side seat surface, facilitating the sweating of the occupant's body, and maintaining the freshness of the occupant's body. Moreover, in order to improve the comfort of the occupant, the air flow is distributed so that a part of the air can be blown towards the neck area of the occupant through a neck air outlet, improving the air exchange in the neck area of the occupant.

[0003] However, when the existing air-flow-distributed neck-ventilated vehicle seats are in use, during ventilation, most of them need to manually adjust the blowing direction, which is not convenient for automatic sweeping operation, not only affecting the comfort of blowing, but also affecting the ventilation range; when the occupant's head is separated from the headrest or leans on the headrest, it is not convenient to automatically adjust the blowing air volume. When the occupant's head leans on the headrest, a relatively large air volume not only affects the comfort of blowing, but also generates a relatively large noise; during long-term driving, when the occupant's head leans on the headrest and changes the driving posture by tilting to both sides, the neck will deviate from the air outlet, affecting the ventilation effect; it is not convenient to adjust the height of the air outlet according to the usage needs of the occupant, which will also affect the ventilation effect.

[0004] Therefore, we propose an air-flow-distributed neck-ventilated vehicle seat. Summary of the Invention

[0005] The purpose of the present invention is to provide an air-flow-distributed neck-ventilated vehicle seat to solve the problems raised in the above background art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an airflow distribution type neck ventilation car seat, comprising a seat cushion, a backrest and a headrest, and an air guide part and an air duct are arranged on the backrest, an air supply mechanism is arranged in the backrest, and the air duct and the air guide part are connected to the air supply mechanism, the bottom of the headrest is connected to a blow hood through a lifting mechanism, and the side wall of the blow hood is slidably connected to a U-shaped air outlet, two symmetrically arranged telescopic covers are fixedly connected to both sides of the air outlet, and the other end of the telescopic cover is fixed to the side wall of the blow hood, the movement of the air outlet is pushed by a first pushing mechanism, and the bottom of the blow hood is fixedly connected to a fixed pipe, the lower end of the fixed pipe is fixedly connected to a fixed box, and a telescopic pipe is fixedly connected between the bottom of the fixed box and the upper end of the air duct, a plurality of air guide plates are rotatably connected in the blow hood through a plurality of rotating shafts, and the rotation of the rotating shafts is driven by a driving mechanism, a solenoid valve is arranged on the side wall of the air duct, and a control mechanism for adjusting and controlling the opening of the solenoid valve is arranged on the side wall of the headrest.

[0007] Preferably, the first pushing mechanism includes an installation cavity opened in the headrest, and a movable block group is inserted into the side wall of the installation cavity, the movable block group includes a middle movable block and two outer movable blocks, and the movable block group is connected to the inner wall of the installation cavity through a first reset mechanism, two symmetrically arranged first movable plates are inserted into the bottom of the installation cavity, and an oblique groove is opened on the side wall of each first movable plate, and the side wall of each of the outer movable blocks is fixedly connected with a first connecting block, and the side wall of the first connecting block is fixedly connected with a pushing pin, the pushing pin is inserted in the oblique groove, and the bottom of each first movable plate is fixedly connected with a pushing plate, the bottom of the pushing plate is provided with a first inclined surface, and the top of the air outlet is fixedly connected with two symmetrically arranged first pushing rods.

[0008] Preferably, the control mechanism includes a fixed plate fixedly connected to the inner side wall of the installation cavity, and the bottom of the fixed plate is connected to a second movable plate through a second reset mechanism, the bottom of the second movable plate is provided with a second inclined surface, and the tops of the outer movable block and the middle movable block are fixedly connected to a second connecting block, the top of the second connecting block is fixedly connected to a second push rod, the bottom of the fixed plate is fixedly connected to a proximity switch, and the top of the second movable plate is fixedly connected to a sensing block.

[0009] Preferably, the lifting mechanism includes two symmetrically arranged guide tubes fixedly connected to the bottom of the headrest, and a first guide rod is inserted in each guide tube, the lower end of the first guide rod is fixed to the top of the blow hood, and a threaded tube is fixedly connected to the bottom of the headrest, a threaded rod is threadedly connected to the threaded tube, the lower end of the threaded rod is rotatably connected to the top of the blow hood, and a plurality of array-arranged toggle rods are fixedly connected to the side walls of the threaded rod.

[0010] Preferably, the driving mechanism includes a gear fixedly sleeved on the side wall of the rotating shaft, and the side wall of the blowing hood is connected with a third moving plate through a third reset mechanism. A plurality of racks arranged in an array are fixedly connected to the side wall of the third moving plate. The racks are meshed with the gear, and the movement of the third moving plate is pushed by a second pushing mechanism.

[0011] Preferably, the second pushing mechanism includes a connecting plate fixedly connected to the bottom of the third moving plate, and a pushing block is fixedly connected to the side wall of the connecting plate. A plurality of baffles are rotatably connected in the fixed box through a rotating rod, and one end of the rotating rod penetrates through the side wall of the fixed box and is fixedly connected with a cam.

[0012] Preferably, the air supply mechanism includes an air supply cavity opened in the backrest, and a blower is fixedly connected in the air supply cavity. A filtering module is fixedly connected to the inlet of the blower, and an air suction pipe is fixedly connected between the filtering module and the air guiding part. An air blowing pipe is fixedly connected to the outlet of the blower, and the lower end of the air guiding pipe is fixed to the other end of the air blowing pipe. An air outlet pipe is fixedly connected to the side wall of the air blowing pipe, and a filter plate is detachably connected to the side wall of the air supply cavity.

[0013] Preferably, the first reset mechanism includes two symmetrically arranged sleeve rods fixedly connected to the side walls of the respective second connection blocks. A sleeve is sleeved on the side wall of the sleeve rod, and the other end of the sleeve is fixed to the inner side wall of the installation cavity. A first spring is sleeved on the side wall of each sleeve.

[0014] Preferably, the second reset mechanism includes a second guiding rod fixedly connected to the top of the second moving plate. The fixing plate is sleeved on the side wall of the second guiding rod. A second spring is sleeved on the side wall of each second guiding rod, and the two ends of the second spring are respectively fixed to the fixing plate and the second moving plate.

[0015] Preferably, the third reset mechanism includes two symmetrically arranged supporting blocks fixedly connected to the side wall of the blowing hood. Two symmetrically arranged fixing rods are fixedly connected to the two opposite side walls of the two supporting blocks. A slider is sleeved on the side wall of each fixing rod, and an installation block is fixedly connected to the side wall of the slider. The installation block is fixed to the side wall of the third moving plate, and a third spring is sleeved on the side wall of each fixing rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The present invention is provided with a control mechanism, a first pushing mechanism, a driving mechanism, etc., which facilitates the automatic adjustment of the air volume at the air outlet. When the occupant's head is separated from the headrest, the air volume at the air outlet becomes larger to ensure normal ventilation effect. When the occupant's head is resting on the headrest, the air volume at the air outlet becomes smaller. When the distance is relatively close, it can not only avoid discomfort caused by a large air volume to the occupant's neck, but also avoid a large amount of noise generated, which has an impact on the occupant. When the occupant's head is resting on the headrest and when the occupant's head deviates to both sides, the air outlet can be automatically moved and adjusted to the deviated side to ensure the air outlet is in a state directly facing the neck and ensure the ventilation effect. It can make the air blown out through the air outlet form a sweeping effect, which not only makes the ventilation effect better and more comfortable, but also can increase the ventilation range. It is convenient to adjust the blowing height of the air outlet, has stronger applicability, and ensures the ventilation effect on the neck. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 3 is a partial cross-sectional view of the blowing hood in the present invention;

[0021] Figure 4 is a partial cross-sectional view of the present invention;

[0022] Figure 5 is a partial cross-sectional view of the headrest in the present invention;

[0023] Figure 6 is Figure 1 the enlarged view at A in

[0024] Figure 7 is Figure 2 the enlarged view at B in

[0025] Figure 8 is Figure 3 the enlarged view at C in

[0026] Figure 9 is Figure 4 the enlarged view at D in

[0027] Figure 10 is Figure 5 the enlarged view at E in

[0028] Figure 11 is Figure 6 the enlarged view at F in

[0029] Figure 12 isFigure 8 Enlarged view of point G in the middle;

[0030] Figure 13 for Figure 12 Enlarged view of H in the middle;

[0031] Figure 14 for Figure 10 The enlarged image at point I in the middle;

[0032] Figure 15 for Figure 10 Enlarged view of J in the middle.

[0033] In the figure: 101, cushion; 102, backrest; 103, headrest; 104, air guide; 201, installation cavity; 202, first movable plate; 203, outer movable block; 204, inclined groove; 205, first connecting block; 206, push pin; 207, push plate; 208, first inclined surface; 209, first push rod; 210, middle moving block; 301, second connecting block; 302, second push rod; 303, second movable plate; 304, second inclined surface; 305, fixed plate; 306, proximity switch; 307, induction block; 401, gear; 402, third movable plate; 403, rack; 501, rotating rod; 502, baffle; 503, cam; 504, connecting plate; 505, push block; 6 01. guide tube; 602. first guide rod; 603. threaded tube; 604. threaded rod; 605. toggle rod; 701. sleeve rod; 702. sleeve tube; 703. first spring; 801. support block; 802. fixed rod; 803. slider; 804. mounting block; 805. third spring; 901. air supply cavity; 902. fan; 903. exhaust pipe; 904. filter module; 905. blow pipe; 906. outlet pipe; 907. filter plate; 1001. second guide rod; 1002. second spring; 11. air duct; 12. solenoid valve; 13. blow hood; 14. fixed pipe; 15. fixed box; 16. telescopic pipe; 17. air outlet; 18. telescopic hood; 19. rotating shaft; 20. air guide plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 - 15, An air distribution type neck ventilation automobile seat in the figure includes a seat cushion 101, a backrest 102 and a headrest 103. A wind guiding part 104 and an air guiding pipe 11 are arranged on the backrest 102. The wind guiding part 104 is a well-known technology in the technical field and will not be elaborated here. An air supply mechanism is arranged inside the backrest 102, and the air guiding pipe 11 and the wind guiding part 104 are connected to the air supply mechanism. The bottom of the headrest 103 is connected with a blowing cover 13 through a lifting mechanism. The side wall of the blowing cover 13 is slidably connected with an air outlet 17 arranged in a U shape. Two symmetrically arranged telescopic covers 18 are fixedly connected to both sides of the air outlet 17, and the other end of the telescopic cover 18 is fixedly connected to the side wall of the blowing cover 13. The movement of the air outlet 17 is pushed by a first pushing mechanism. A fixed pipe 14 is fixedly connected to the bottom of the blowing cover 13. The lower end of the fixed pipe 14 is fixedly connected with a fixed box 15, and a telescopic pipe 16 is fixedly connected between the bottom of the fixed box 15 and the upper end of the air guiding pipe 11. A plurality of wind guiding plates 20 are rotatably connected in the blowing cover 13 through a plurality of rotating shafts 19, and the rotation of the rotating shafts 19 is driven by a driving mechanism. An electromagnetic valve 12 is arranged on the side wall of the air guiding pipe 11, and a control mechanism for adjusting and controlling the opening degree of the electromagnetic valve 12 is arranged on the side wall of the headrest 103, which is convenient for automatically adjusting the air volume of the air outlet 17. When the head of the occupant is separated from the headrest 103, the air volume of the air outlet 17 becomes larger to ensure normal ventilation effect. When the head of the occupant leans on the headrest 103, the air volume of the air outlet 17 becomes smaller. When the distance is relatively close, it can not only avoid discomfort caused by large air volume to the neck of the occupant, but also avoid large noise and affect the occupant. When the head of the occupant leans on the headrest 103, and when the head of the occupant deviates to both sides, the air outlet 17 can be automatically moved and adjusted to the deviated side to ensure the air outlet 17 is in a state directly facing the neck and ensure the ventilation effect. It can make the air blown out through the air outlet 17 form a sweeping effect, which not only makes the ventilation effect better and more comfortable, but also can increase the ventilation range. It is convenient to adjust the blowing height of the air outlet 17, has stronger applicability and ensures the ventilation effect on the neck.

[0036] The first driving mechanism includes an installation cavity 201 formed in the headrest 103. A moving block group is inserted into the side wall of the installation cavity 201. The moving block group includes an intermediate moving block 210 and two outer moving blocks 203. The moving block group is connected to the inner side wall of the installation cavity 201 through a first reset mechanism. Two symmetrically arranged first moving plates 202 are inserted into the bottom of the installation cavity 201. An inclined slot 204 is formed in the side wall of each first moving plate 202. A first connecting block 205 is fixedly connected to the side wall of each outer moving block 203. A pushing pin 206 is fixedly connected to the side wall of the first connecting block 205. The pushing pin 206 is inserted into the inclined slot 204. A pushing plate 207 is fixedly connected to the bottom of each first moving plate 202. A first inclined surface 208 is arranged at the bottom of the pushing plate 207. Two symmetrically arranged first pushing rods 209 are fixedly connected to the top of the air outlet 17. When the occupant's head deviates to both sides, it will abut against the outer moving block 203, and the outer moving block 203 will be pushed to move into the installation cavity 201. When the outer moving block 203 moves, it can drive the pushing pin 206 to slide upward along the inclined slot 204 through the first connecting block 205, so as to push the first moving plate 202 to move downward. At the same time, the pushing plate 207 is driven to move downward. When the upper end of the first pushing rod 209 abuts against the first inclined surface 208, the air outlet 17 can be pushed to move and adjust to the offset side, ensuring the state that the air outlet 17 is directly facing the neck and ensuring the ventilation effect.

[0037] The control mechanism includes a fixed plate 305 fixedly connected to the inner wall of the installation cavity 201, and the bottom of the fixed plate 305 is connected to the second movable plate 303 through a second reset mechanism, the bottom of the second movable plate 303 is provided with a second inclined surface 304, and the tops of the outer movable block 203 and the middle movable block 210 are fixedly connected to the second connecting block 301, the top of the second connecting block 301 is fixedly connected to the second push rod 302, and the bottom of the fixed plate 305 is fixedly connected to the proximity switch 306, and The top of the second movable plate 303 is fixedly connected with a sensing block 307. When the occupant's head rests on the headrest 103, it will abut against the middle movable block 210, thereby pushing the middle movable block 210 to move into the installation cavity 201. Moreover, when the occupant's head deviates to both sides, it will abut against the outer movable blocks 203, thereby pushing the outer movable blocks 203 to move into the installation cavity 201. When the outer movable blocks 203 or the middle movable blocks 210 move, the second connecting blocks 301 can be driven to move the second movable plate 303. The second push rod 302 moves, and the upper end of the second push rod 302 abuts against the second inclined surface 304 and then slides downward along the second inclined surface 304, thereby pushing the second movable plate 303 to move upward. At this time, the distance between the sensing block 307 and the proximity switch 306 becomes smaller. At the same time, the distance between the sensing block 307 can be detected by the proximity switch 306. At this time, the opening of the solenoid valve 12 is reduced, so that the air flow of the air duct 11 becomes smaller, so that the air flow out of the air outlet 17 is reduced. The air becomes less, and when the distance is closer, it can not only avoid the discomfort to the occupant's neck caused by the large wind volume, but also avoid the large noise generated and the impact on the occupant. When the occupant's head is separated from the headrest 103, the outer moving block 203 and the middle moving block 210 can move and reset under the action of the first reset mechanism. At the same time, the distance between the sensing block 307 and the proximity switch 306 becomes larger. At this time, the opening of the solenoid valve 12 is adjusted to increase the air outlet 17 The air volume becomes larger to ensure normal ventilation effect.

[0038] The lifting mechanism includes two symmetrically arranged guide tubes 601 fixedly connected to the bottom of the headrest 103, and a first guide rod 602 is inserted in each guide tube 601, the lower end of the first guide rod 602 is fixed to the top of the blowing hood 13, and a threaded tube 603 is fixedly connected to the bottom of the headrest 103, and a threaded rod 604 is threadedly connected to the threaded tube 603, the lower end of the threaded rod 604 is rotatably connected to the top of the blowing hood 13, and a plurality of array-arranged toggle rods 605 are fixedly connected to the side walls of the threaded rod 604. When in use, when the headrest 103 is lifted and adjusted, the blowing hood 13 can be synchronously lifted and lowered by the lifting mechanism, and the threaded rod 604 can be rotated by the toggle rod 605. When the threaded rod 604 is rotated, the blowing hood 13 can be driven to be lifted and lowered finely, thereby adjusting the blowing height of the air outlet 17, which has stronger applicability and ensures the ventilation effect on the neck.

[0039] The driving mechanism includes a gear 401 fixedly sleeved on the side wall of the rotating shaft 19. The side wall of the air blowing cover 13 is connected with a third moving plate 402 through a third reset mechanism. A plurality of racks 403 arranged in an array are fixedly connected to the side wall of the third moving plate 402. The racks 403 are meshed with the gear 401. The movement of the third moving plate 402 is pushed by a second pushing mechanism. When ventilation is carried out, the second pushing mechanism pushes the third moving plate 402 to move up and down reciprocally. At the same time, it drives the racks 403 to move up and down reciprocally, thereby driving the gear 401 to rotate reciprocally. Further, it drives the air guiding plate 20 to rotate reciprocally through the rotating shaft 19, so that the air blown out through the air outlet 17 can form a sweeping effect. This not only makes the ventilation effect better and more comfortable, but also can increase the ventilation range.

[0040] The second pushing mechanism includes a connecting plate 504 fixedly connected to the bottom of the third moving plate 402. A pushing block 505 is fixedly connected to the side wall of the connecting plate 504. A plurality of baffle plates 502 are rotatably connected in the fixed box 15 through a rotating rod 501. One end of the rotating rod 501 penetrates through the side wall of the fixed box 15 and is fixedly connected with a cam 503. When air enters the fixed box 15 through the telescopic pipe 16, it impacts on the surface of the baffle plate 502, which can push the rotating rod 501 and the cam 503 to rotate. When the tip of the cam 503 abuts against the bottom of the pushing block 505, it can drive a plurality of racks 403 to move upward through the connecting plate 504 and the third moving plate 402.

[0041] The air supply mechanism includes an air supply chamber 901 opened in the backrest 102. A blower 902 is fixedly connected in the air supply chamber 901. An inlet of the blower 902 is fixedly connected with a filtering module 904. A suction pipe 903 is fixedly connected between the filtering module 904 and the air guiding part 104. An outlet of the blower 902 is fixedly connected with a blowing pipe 905. The lower end of the air guiding pipe 11 is fixedly connected with the other end of the blowing pipe 905. An air outlet pipe 906 is fixedly connected to the side wall of the blowing pipe 905. A filter plate 907 is detachably connected to the side wall of the air supply chamber 901. The filtering module 904 is a well-known technology in the technical field and will not be elaborated here. When the blower 902 is started, at this time, air can be sucked through the suction pipe 903. The air is inhaled into the blower 902 from the seat surface of the backrest 102 through the air guiding part 104. At the same time, it can be filtered through the filtering module 904. The filtered air can be blown out through the blowing pipe 905. Part of it will be blown into the air guiding pipe 11 and enter the fixed box 15 through the telescopic pipe 16. Then, it enters the air blowing cover 13 through the fixed pipe 14 and blows on the neck area of the occupant through the air outlet 17 for ventilation in the form of blowing. And another part of the blown air can be blown out through the air outlet pipe 906, enter the air supply chamber 901 and be discharged through the filter plate 907 to avoid the wind blown out from the air outlet 17 being too strong.

[0042] The first reset mechanism includes two symmetrically arranged sleeve rods 701 fixedly connected to the side walls of each second connecting block 301, and the side wall of the sleeve rod 701 is sleeved with a sleeve 702, the other end of the sleeve 702 is fixed to the inner wall of the installation cavity 201, and the side wall of each sleeve 702 is sleeved with a first spring 703, which guides and resets the movement of the outer moving block 203 and the middle moving block 210.

[0043] The second reset mechanism includes a second guide rod 1001 fixedly connected to the top of the second movable plate 303, and the fixed plate 305 is sleeved on the side wall of the second guide rod 1001, and the side wall of each second guide rod 1001 is sleeved with a second spring 1002, and the two ends of the second spring 1002 are respectively fixed to the fixed plate 305 and the second movable plate 303, which plays a guiding and reset role in the movement of the second movable plate 303.

[0044] The third reset mechanism includes two symmetrically arranged support blocks 801 fixedly connected to the side walls of the blow hood 13, and two opposite side walls of the two support blocks 801 are fixedly connected to two symmetrically arranged fixed rods 802, the side wall of each fixed rod 802 is sleeved with a slider 803, and the side wall of the slider 803 is fixedly connected with a mounting block 804, the mounting block 804 is fixed to the side wall of the third movable plate 402, and the side wall of each fixed rod 802 is sleeved with a third spring 805, which guides and resets the movement of the third movable plate 402.

[0045] Working principle: When in use, the occupant sits on the seat cushion 101 and leans on the backrest 102. When the headrest 103 is raised or lowered, the blowing hood 13 can be driven to be raised or lowered synchronously through the lifting mechanism, and the threaded rod 604 can be rotated by the toggle rod 605. When the threaded rod 604 is rotated, the blowing hood 13 can be driven to be raised or lowered and fine-tuned, thereby adjusting the blowing height of the air outlet 17, which is more applicable and ensures the ventilation effect on the neck.

[0046] Start the fan 902. At this time, air can be exhausted through the exhaust pipe 903. The air is sucked into the fan 902 from the seat surface of the backrest 102 through the air guide part 104. At the same time, it can be filtered through the filter module 904. The filtered air can be blown out through the blowing pipe 905. Part of it will be blown into the air duct 11 and enter the fixed box 15 through the telescopic tube 16. Then, it enters the blowing hood 13 through the fixed tube 14 and ventilates the occupant's neck area through the air outlet 17. Another part of the blown air can be blown out through the air outlet pipe 906, enter the air supply cavity 901 and then be discharged through the filter plate 907. When the occupant's head rests on the headrest 103, it will resist the middle moving block 210, thereby pushing the middle moving block 210 to move into the installation cavity 201. At the same time, the first spring 703 is stretched.

[0047] When the occupant's head deflects to both sides, it will abut against the outer moving block 203, pushing the outer moving block 203 to move into the installation cavity 201, and the first spring 703 will also be stretched. When the outer moving block 203 or the middle moving block 210 moves, it can drive the second push rod 302 to move through the second connecting block 301, and when the upper end of the second push rod 302 abuts against the second inclined surface 304, it will slide downward along the second inclined surface 304, so as to be able to push the second moving plate 303 upward, the second spring 1002 is compressed, and the distance between the induction block 307 and the proximity switch 306 becomes smaller. At the same time, the proximity switch 306 can detect the distance of the induction block 307. At this time, the opening degree of the solenoid valve 12 is adjusted to be smaller, so that the air volume output from the air guide pipe 11 becomes smaller, and thus the air blown out from the air outlet 17 becomes less. When the distance is relatively close, it can not only avoid the discomfort caused by too large air volume to the occupant's neck, but also avoid the large noise generated, which affects the occupant. When the occupant's head is separated from the headrest 103, the outer moving block 203 and the middle moving block 210 can move and reset under the action of the first spring 703. At the same time, the distance between the induction block 307 and the proximity switch 306 becomes larger. At this time, the opening degree of the solenoid valve 12 is adjusted to be larger, so that the air volume output from the air outlet 17 becomes larger, ensuring the normal ventilation effect.

[0048] At the same time, when the occupant's head is resting on the headrest 103, and when the occupant's head deflects to both sides, it will abut against the outer moving block 203, pushing the outer moving block 203 to move into the installation cavity 201, and the first spring 703 is stretched. At the same time, when the outer moving block 203 moves, it can drive the push pin 206 to slide upward along the inclined groove 204 through the first connecting block 205, so as to be able to push the first moving plate 202 downward, and at the same time, drive the push plate 207 downward. When the upper end of the first push rod 209 abuts against the first inclined surface 208, it can push the air outlet 17 to move and adjust to the deflected side, ensuring the facing state of the air outlet 17 and the neck, and ensuring the ventilation effect.

[0049] Moreover, during ventilation, when air enters the fixed box 15 through the telescopic pipe 16, it impacts on the surface of the baffle 502, which can push the rotating rod 501 and the cam 503 to rotate. When the tip of the cam 503 abuts against the bottom of the pushing block 505, it can drive a plurality of racks 403 to move upward through the connecting plate 504 and the third moving plate 402. When the racks 403 move upward, they can drive the mounting block 804 to move upward. At the same time, the third spring 805 is compressed. When the tip of the cam 503 passes over the bottom of the pushing block 505, the mounting block 804 can move downward and reset under the action of the third spring 805. At the same time, it drives the third moving plate 402 and the racks 403 to move downward and reset. In this way, the racks 403 can move up and down reciprocally, thereby driving the gear 401 to rotate reciprocally. Furthermore, the air deflector 20 is driven to rotate reciprocally through the rotating shaft 19, so that the air blown out through the air outlet 17 can form a sweeping effect, which not only makes the ventilation effect better and more comfortable, but also can increase the ventilation range.

[0050] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air flow distribution type neck ventilation vehicle seat, comprising a seat cushion (101), a backrest (102) and a headrest (103), and a wind guiding part (104) and an air guiding pipe (11) are arranged on the backrest (102), and is characterized in that, A wind supply mechanism is arranged inside the backrest (102), and the air guide pipe (11) and the air guiding part (104) are connected to the wind supply mechanism. The bottom of the headrest (103) is connected with a blowing hood (13) through a lifting mechanism, and the side wall of the blowing hood (13) is slidably connected with an air outlet (17) arranged in a U shape. Two symmetrically arranged telescopic covers (18) are fixedly connected to both sides of the air outlet (17), and the other end of the telescopic cover (18) is fixedly connected to the side wall of the blowing hood (13). The movement of the air outlet (17) is pushed by a first pushing mechanism. A fixed pipe (14) is fixedly connected to the bottom of the blowing hood (13), a fixed box (15) is fixedly connected to the lower end of the fixed pipe (14), and a telescopic pipe (16) is fixedly connected between the bottom of the fixed box (15) and the upper end of the air guide pipe (11). A plurality of air guiding plates (20) are rotatably connected in the blowing hood (13) through a plurality of rotating shafts (19), and the rotation of the rotating shafts (19) is driven by a driving mechanism. An electromagnetic valve (12) is arranged on the side wall of the air guide pipe (11), and a control mechanism for adjusting and controlling the opening degree of the electromagnetic valve (12) is arranged on the side wall of the headrest (103); The first pushing mechanism includes an installation cavity (201) opened in the headrest (103), and a moving block group is inserted into the side wall of the installation cavity (201). The moving block group includes an intermediate moving block (210) and two outer moving blocks (203), and the moving block group is connected to the inner side wall of the installation cavity (201) through a first reset mechanism. Two symmetrically arranged first moving plates (202) are inserted into the bottom of the installation cavity (201), and inclined slots (204) are opened on the side walls of each first moving plate (202). A first connecting block (205) is fixedly connected to the side wall of each outer moving block (203), and a pushing pin (206) is fixedly connected to the side wall of the first connecting block (205). The pushing pin (206) is inserted into the inclined slot (204), and a pushing plate (207) is fixedly connected to the bottom of each first moving plate (202). A first inclined surface (208) is arranged at the bottom of the pushing plate (207), and two symmetrically arranged first pushing rods (209) are fixedly connected to the top of the air outlet (17).

2. The airflow distribution type neck-ventilated vehicle seat according to claim 1, characterized in that: The control mechanism includes a fixing plate (305) fixedly connected to the inner side wall of the installation cavity (201), and a second moving plate (303) is connected to the bottom of the fixing plate (305) through a second reset mechanism. A second inclined surface (304) is arranged at the bottom of the second moving plate (303), and a second connecting block (301) is fixedly connected to the top of both the outer moving block (203) and the intermediate moving block (210). A second pushing rod (302) is fixedly connected to the top of the second connecting block (301). A proximity switch (306) is fixedly connected to the bottom of the fixing plate (305), and an induction block (307) is fixedly connected to the top of the second moving plate (303).

3. The air flow distribution type neck ventilation vehicle seat according to claim 1, wherein: The lifting mechanism includes two symmetrically arranged guide tubes (601) fixedly connected to the bottom of the headrest (103). A first guide rod (602) is inserted into each guide tube (601). The lower end of the first guide rod (602) is fixedly connected to the top of the blowing hood (13). A threaded tube (603) is fixedly connected to the bottom of the headrest (103). A threaded rod (604) is threadedly connected to the threaded tube (603). The lower end of the threaded rod (604) is rotatably connected to the top of the blowing hood (13). A plurality of dial rods (605) arranged in an array are fixedly connected to the side wall of the threaded rod (604).

4. The air flow distribution type neck ventilation vehicle seat according to claim 1, characterized in that: The driving mechanism includes a gear (401) fixedly sleeved on the side wall of the rotating shaft (19). A third moving plate (402) is connected to the side wall of the blowing hood (13) through a third reset mechanism. A plurality of racks (403) arranged in an array are fixedly connected to the side wall of the third moving plate (402). The racks (403) are meshed with the gear (401). The movement of the third moving plate (402) is pushed by a second pushing mechanism.

5. The airflow distribution type neck ventilation vehicle seat according to claim 4, wherein: The second pushing mechanism includes a connecting plate (504) fixedly connected to the bottom of the third moving plate (402). A pushing block (505) is fixedly connected to the side wall of the connecting plate (504). A plurality of baffle plates (502) are rotatably connected in the fixed box (15) through a rotating rod (501). One end of the rotating rod (501) penetrates through the side wall of the fixed box (15) and is fixedly connected to a cam (503).

6. The air flow distribution type neck ventilation vehicle seat according to claim 1, wherein: The air supply mechanism includes an air supply chamber (901) opened in the backrest (102). A blower (902) is fixedly connected in the air supply chamber (901). A filter module (904) is fixedly connected to the inlet of the blower (902). A suction duct (903) is fixedly connected between the filter module (904) and the air guiding part (104). A blowing duct (905) is fixedly connected to the outlet of the blower (902). The lower end of the air guiding pipe (11) is fixedly connected to the other end of the blowing duct (905). An air outlet pipe (906) is fixedly connected to the side wall of the blowing duct (905). A filter plate (907) is detachably connected to the side wall of the air supply chamber (901).

7. The air distribution type neck ventilation vehicle seat according to claim 1, wherein: The first reset mechanism includes two symmetrically arranged sleeve rods (701) fixedly connected to the side walls of the respective second connection blocks (301). A sleeve (702) is sleeved on the side wall of the sleeve rod (701). The other end of the sleeve (702) is fixedly connected to the inner side wall of the installation cavity (201). A first spring (703) is sleeved on the side wall of each sleeve (702).

8. The airflow-distributing neck-ventilated vehicle seat according to claim 2, characterized in that: The second reset mechanism includes a second guide rod (1001) fixedly connected to the top of the second moving plate (303). The fixing plate (305) is sleeved on the side wall of the second guide rod (1001). A second spring (1002) is sleeved on the side wall of each second guide rod (1001). The two ends of the second spring (1002) are respectively fixedly connected to the fixing plate (305) and the second moving plate (303).

9. The airflow-distributing neck-ventilated vehicle seat according to claim 4, characterized in that: The third reset mechanism includes two symmetrically arranged support blocks (801) fixedly connected to the side wall of the blowing hood (13), and two symmetrically arranged fixing rods (802) are fixedly connected to the two opposite side walls of the two support blocks (801). A slider (803) is sleeved on the side wall of each fixing rod (802), and a mounting block (804) is fixedly connected to the side wall of the slider (803). The mounting block (804) is fixed to the side wall of the third moving plate (402), and a third spring (805) is sleeved on the side wall of each fixing rod (802).

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