CN111469734A - Automatic adjusting device for height and temperature of headrest of automobile seat - Google Patents
Automatic adjusting device for height and temperature of headrest of automobile seat Download PDFInfo
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- CN111469734A CN111469734A CN202010466852.5A CN202010466852A CN111469734A CN 111469734 A CN111469734 A CN 111469734A CN 202010466852 A CN202010466852 A CN 202010466852A CN 111469734 A CN111469734 A CN 111469734A
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- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000036760 body temperature Effects 0.000 claims abstract description 20
- 238000000554 physical therapy Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 26
- 230000006698 induction Effects 0.000 claims description 23
- 230000006870 function Effects 0.000 claims description 8
- 230000036541 health Effects 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 210000004556 brain Anatomy 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/809—Head-rests movable or adjustable vertically slidable
- B60N2/829—Head-rests movable or adjustable vertically slidable characterised by their adjusting mechanisms, e.g. electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/879—Head-rests with additional features not related to head-rest positioning, e.g. heating or cooling devices or loudspeakers
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Abstract
The invention provides an automatic adjusting device for the height and temperature of a headrest of an automobile seat, which comprises a control module, a body posture positioning sensing assembly, a headrest lifting mechanism positioned at the automobile seat and a head posture sensor positioned at the headrest; when a passenger gets on the automobile and sits in, if the body posture of the passenger on the automobile seat is detected by the control module through the body posture positioning sensing assembly to be a driving posture, the control module detects the head position of the passenger through the head posture sensor, and enables the headrest of the seat to vertically move to a protection position matched with the head position of the passenger through the headrest lifting mechanism; the invention can automatically adjust the height of the headrest to match the head position of a passenger and can carry out hot compress physical therapy on the passenger according to the temperature of the cabin and the body temperature of the passenger.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted equipment, in particular to an automatic adjusting device for the height and temperature of a headrest of an automobile seat.
Background
The most flexible and protective part of the headrest of the automobile seat is in the middle of the headrest. Therefore, the height of the headrest should be adjusted to be flush with the head, or the middle soft part of the headrest is parallel to the upper edge of the ears of the passenger, so that the headrest can effectively protect the head and the cervical vertebrae when the head of the passenger leans backwards when the vehicle is severely impacted. According to the adjustment principle, passengers with different trunk heights have different requirements on the height of the headrest of the automobile seat.
The existing automobile seat headrest adjusting device and method mainly have the following problems and defects:
1) the traditional manual adjusting device and method need the passenger's body to lean slightly backward, and adjust the height of the headrest through the adjusting button, and the method is not easy to implement, and can not ensure that the adjusted headrest is in the theoretical correct position, and the safety of the seat is low.
2) The electric adjusting device and the method adjust the height of the headrest through the driving of the motor, though the operation is simple and convenient, the complete automation of the adjusting process of the headrest cannot be realized, the height of the headrest still needs to be manually grasped, and the problems of low action sensitivity, low adjusting accuracy and the like exist.
3) Although the current advanced automatic adjustment method can ensure certain headrest adjustment precision, the whole mechanism is huge, the control mechanism is complex, and the seat can not realize self-adaptive temperature control and can not perform the physiotherapy and health care function of cervical vertebra hot compress.
Disclosure of Invention
The invention provides an automatic adjusting device for the height and temperature of a headrest of an automobile seat, which can automatically adjust the height of the headrest to match the head position of a passenger and can carry out hot compress physical therapy on the passenger according to the temperature of a cabin and the body temperature of the passenger.
The invention adopts the following technical scheme.
An automatic adjusting device for the height and temperature of a headrest of an automobile seat comprises a control module (20), a body posture positioning sensing assembly, a headrest lifting mechanism and a head posture sensor (17), wherein the headrest lifting mechanism is positioned at the automobile seat, and the head posture sensor is positioned at the headrest; when a passenger gets on the automobile and sits on the automobile, if the body posture of the passenger on the automobile seat is detected to be the driving posture by the control module through the body posture positioning sensing assembly, the head position of the passenger is detected by the control module through the head posture sensor, and the seat headrest (16) is vertically moved to the protection position matched with the head position of the passenger through the headrest lifting mechanism.
The posture positioning sensing assembly comprises a safety belt buckle triggering element (21) and a head top induction sensor (14) positioned at the top of the cabin; the driving posture is that a passenger sits on an automobile seat and correctly uses a safety belt, a headrest of the automobile seat supports the head of the passenger, the head of the passenger is positioned under a head sensing sensor, and the maintaining time reaches a threshold value; the overhead inductive sensor monitors the overhead part of the passenger.
The head pose sensor monitors the back brain part of the passenger; the protection position of the seat headrest matched with the head position of a passenger is that the height of the headrest is flush with the head of the passenger, or the middle soft part of the headrest is flush with the upper edge of the ear of the passenger.
The headrest is connected with the headrest U-shaped support frame; the headrest U-shaped bearer is connected with a trapezoidal thread screw rod of a headrest lifting mechanism through a threaded hole of a flat plate member (6) at the bottom; the stepping motor (10) of the headrest lifting mechanism is arranged at a motor retainer (9) of the middle supporting beam (1) of the automobile seat, and when the stepping motor (10) drives the trapezoidal thread screw (5) to rotate, a flat plate piece of the headrest U-shaped support is driven to vertically move, so that the headrest is driven to lift to a required position.
The middle supporting beam is fixed at a seat backrest frame (2) of a seat backrest (19); the vertical arms at two sides of the U-shaped headrest bearing frame are arranged at the connecting square column (4) at the upper part of the seat back frame (2) in a penetrating manner; the stepping motor is driven by a driving bevel gear (11) at the tail end of a spindle and a driven bevel gear (12) at the lower end of a trapezoidal thread screw rod in a meshed mode; the motor retainer is fixed at the middle supporting beam of the automobile seat through a nut (7) and a bolt (8).
The control module is arranged in the automobile seat and comprises a microprocessor, an I/O interface circuit and a system bus; when a passenger correctly uses the safety belt to lock the safety belt inserting plate and the inserting buckle, the safety belt inserting buckle triggering element unidirectionally sends a triggering signal for marking that the passenger is seated completely to the control module.
The adjusting device also comprises a physiotherapy component controlled by the control module; the physiotherapy assembly comprises a cervical vertebra hot compress device (18) arranged at the backrest of the seat and a man-machine interaction assembly (24) arranged at a vehicle-mounted central control screen (25); when the seat headrest is vertically moved to a protection position matched with the head position of a passenger, the cervical vertebra hot compress device is positioned behind the cervical vertebra of the passenger; when the passenger selects the physiotherapy health care function of "cervical vertebra hot compress" on the on-vehicle central screen operation interface, the human-computer interaction subassembly sends passenger physiotherapy request data to control module, after control module received the request data, earlier through in-vehicle temperature sensor (15) gather car interior ambient temperature data, passenger body temperature sensor (23) of rethread seat cushion department detect passenger body temperature data, then the range of heating of control cervical vertebra hot compress device is in order to carry out cervical vertebra hot compress operation to the passenger.
The control module stores an imaging reference system of a human back head part, when the control module detects the head position of a passenger through the head pose sensor, the head data of the passenger are detected and compared with the imaging reference system, and therefore an image with available resolution is generated through three-dimensional projection modeling.
A headrest height adjusting method of an automatic headrest height and temperature adjusting device of an automobile seat comprises the following steps when the headrest height and temperature adjusting device of the automobile seat is used for adjusting the headrest height;
step S1: when a passenger gets on the vehicle and gets in the seat, if the safety belt is fastened according to a correct operation method, the safety belt plug board and the socket can be instantly locked, and a safety belt plug buckle triggering element in the safety belt plug buckle generates a triggering signal of 'passenger getting in the seat is finished';
step S2: the control module sends a control instruction to the overhead induction sensor and the head pose sensor after receiving a triggering signal of 'passenger seating completion' transmitted by the safety belt buckle triggering element in one direction; meanwhile, the control module prompts passengers by voice or images and requires the passengers to keep the trunk and the head in a static state for more than a short time relative to the automobile seat;
step S3: the head top induction sensor and the head pose sensor enter a working mode after receiving a control instruction, when the time for a passenger to keep a static state reaches a threshold value, the head top induction sensor generates images of the head top and the nearby area of the passenger in the time period, the head pose sensor generates images of the back head and the nearby area of the passenger in the time period, and the head top induction sensor and the head pose sensor convert image information into electric signals and feed the electric signals back to the control module;
step S4: the control module receives two groups of image electric signals fed back by the head top induction sensor and the head pose sensor, comprehensively compares and analyzes the two groups of electric signals, and outputs the motor running time and the running direction instruction to a stepping motor of the headrest lifting mechanism;
step S5: a stepping motor of the headrest lifting mechanism drives the headrest to vertically move to a position required by protection;
step S6: because the head pose sensor moves vertically along with the lifting of the headrest, the control module detects the head data of the passenger again through the head top induction sensor and the head pose sensor, and if the deviation value of the actual position of the headrest and the position required for protection exceeds the threshold value, the control module adjusts the position of the headrest again through the headrest lifting mechanism until the deviation value of the actual position of the headrest and the position required for protection is less than the threshold value.
A temperature adjusting method of an automatic adjusting device for the height and the temperature of a headrest of an automobile seat comprises the following steps of;
p1, acquiring vehicle cabin environment temperature data and passenger body temperature data by the control module, checking the optimal vehicle seat heating temperature under the current condition from a three-dimensional curved surface diagram of 'vehicle interior temperature-passenger body temperature-heating temperature' pre-stored in a memory of the control module, and outputting a temperature control instruction to the cervical vertebra hot compress device;
step P2, the cervical vertebra hot compress device maintains the heating temperature at the required heating temperature point according to the control instruction, and realizes the physiotherapy health care function of the cervical vertebra hot compress of the passenger;
and step P3, the heating temperature of the automobile seat needs to be adjusted regularly due to the fact that the environment temperature in the automobile and the body temperature of the passenger fluctuate along with the change of time, the control module collects the environment temperature data of the automobile cabin and the body temperature data of the passenger according to preset frequency, and the deviation value of the heating temperature is calculated to correct the temperature control instruction, so that the heating temperature of the cervical vertebra hot compress device is matched with the environment temperature in the automobile and the body temperature of the passenger.
The invention solves the problems and defects that the implementation of the height adjustment process of the automobile seat headrest is difficult, the height adjustment precision is low, the self-adaptive temperature control cannot be realized to improve the comfort level and the like in the prior art.
The invention provides an automatic adjusting device for the height and temperature of a headrest of an automobile seat and a using method thereof, which are novel structural equipment for simplifying the adjustment process of the headrest and improving the riding comfort level in the driving or driving process. It has the following advantages:
1) in the headrest lifting mechanism, the bevel gear transmission design can obtain an accurate transmission ratio, and the trapezoidal thread pair has the characteristics of easiness in self-locking, high transmission efficiency and the like, so that the high-precision adjustment of the headrest of the automobile seat is ensured, and the safety probability of the automobile seat in the using process is improved.
2) When a passenger gets on the automobile and sits in, once the safety belt is fastened correctly, the headrest height control module enters a working state immediately, a series of control work is completed by the microchip, the height of the headrest is not required to be adjusted manually by the passenger, even the power switch for starting the headrest adjustment is not required to be closed manually by the passenger, and the full automation of the height adjustment process of the automobile seat headrest is realized.
3) When the head is detected, the head pose sensor starts to collect data from the head detection and then compares the data with an imaging reference system, so that three-dimensional projection modeling is performed, an image with a certain resolution ratio is generated, the method is intelligent application of a simple technology, and has the characteristics of high fidelity, strong robustness and the like.
4) The heating element is adopted to control the temperature of the automobile seat, passengers only need to select whether to start the cervical vertebra hot compress physiotherapy health care function according to needs, the rest temperature control processes are highly automatic, the comfort level of the automobile seat in the use process is improved, and the automobile seat has remarkable fatigue relieving effect particularly for passengers who run for a long distance.
The invention can be used for seat structural parts meeting the requirements of high headrest adjustment precision and certain comfort level in the automobile industry and the like. If the device and the using method can be adopted to reform the conventional automobile common seat, or the device and the using method are used for the integrated design of an intelligent automobile.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a schematic of the present invention;
FIG. 3 is a schematic view of the headrest raising and lowering mechanism of the present invention;
FIG. 4 is a schematic flow chart of the present invention for controlling headrest lift;
FIG. 5 is a schematic flow chart of the present invention for controlling heating physiotherapy of a seat;
in the figure: 1-a middle supporting beam of the automobile seat; 2-a seat back frame; 3-headrest U-shaped support frame; 4-a square column is connected to the upper part of the backrest frame of the seat; 5-a trapezoidal thread screw; 6-a plate member; 7-a nut; 8-bolt; 9-a motor holder; 10-a stepper motor; 11-drive bevel gear; 12-driven bevel gear; 13-a square column connected with the lower part of the backrest frame of the seat; 14-overhead inductive sensors; 15-an in-vehicle temperature sensor; 16-a seat headrest; 17-a head pose sensor; 18-cervical vertebra hot compress device; 19-a seat back; 20-a control module; 21-a belt buckle triggering element; 22-a seat cushion; 23-passenger temperature sensor; 24-a human-computer interaction component; 25-vehicle central control screen.
Detailed Description
As shown in fig. 1-5, an automatic adjusting device for the height and temperature of a headrest of an automobile seat comprises a control module 20, a body posture positioning sensing assembly, a headrest lifting mechanism positioned at the automobile seat and a head posture sensor 17 positioned at the headrest; when a passenger gets on the automobile and sits in, if the body posture of the passenger on the automobile seat is detected by the control module through the body posture positioning sensing assembly to be the driving posture, the head position of the passenger is detected by the control module through the head posture sensor, and the seat headrest 16 is vertically moved to the protection position matched with the head position of the passenger through the headrest lifting mechanism.
The posture positioning sensing assembly comprises a safety belt buckle triggering element 21 and an overhead induction sensor 14 positioned at the top of the cabin; the driving posture is that a passenger sits on an automobile seat and correctly uses a safety belt, a headrest of the automobile seat supports the head of the passenger, the head of the passenger is positioned under a head sensing sensor, and the maintaining time reaches a threshold value; the overhead inductive sensor monitors the overhead part of the passenger.
The head pose sensor monitors the back brain part of the passenger; the protection position of the seat headrest matched with the head position of a passenger is that the height of the headrest is flush with the head of the passenger, or the middle soft part of the headrest is flush with the upper edge of the ear of the passenger.
The headrest is connected with the headrest U-shaped support frame 3; the headrest U-shaped bearer is connected with a trapezoidal thread screw rod 5 of a headrest lifting mechanism through a threaded hole of a flat plate member 6 at the bottom; the stepping motor 10 of the headrest lifting mechanism is arranged at the motor retainer 9 of the middle supporting beam 1 of the automobile seat, and when the stepping motor 10 drives the trapezoidal thread screw 5 to rotate, the flat plate part of the headrest U-shaped support is driven to vertically move, so that the headrest is driven to lift to a required position.
The middle supporting beam is fixed at the seat back frame 2 of the seat back 19; the vertical arms at two sides of the U-shaped headrest bearing frame are arranged at the connecting square column 4 at the upper part of the seat back frame 2 in a penetrating manner; the stepping motor is driven by a driving bevel gear 11 at the tail end of a main shaft and a driven bevel gear 12 at the lower end of a trapezoidal thread screw rod in a meshed mode; the motor retainer is fixed at the middle supporting beam of the automobile seat through a nut 7 and a bolt 8.
The lower end of the trapezoidal thread screw rod penetrates through the connecting square column 13 at the lower part of the seat back frame 2, and the upper end of the trapezoidal thread screw rod is arranged at the connecting square column 4 at the upper part of the seat back frame 2.
The control module is arranged in the automobile seat and comprises a microprocessor, an I/O interface circuit and a system bus; when a passenger correctly uses the safety belt to lock the safety belt inserting plate and the inserting buckle, the safety belt inserting buckle triggering element unidirectionally sends a triggering signal for marking that the passenger is seated completely to the control module.
The adjusting device also comprises a physiotherapy component controlled by the control module; the physiotherapy assembly comprises a cervical vertebra hot compress device 18 arranged at the backrest of the seat and a man-machine interaction assembly 24 arranged at a vehicle-mounted central control screen 25; when the seat headrest is vertically moved to a protection position matched with the head position of a passenger, the cervical vertebra hot compress device is positioned behind the cervical vertebra of the passenger; when the passenger selects the physiotherapy health-care function of 'cervical vertebra hot compress' on the vehicle-mounted central control screen operation interface, the human-computer interaction component sends passenger physiotherapy request data to the control module, after the control module receives the request data, the in-vehicle ambient temperature data is collected through the in-vehicle temperature sensor 15, the passenger body temperature data is detected through the passenger body temperature sensor 23 at the seat cushion 22, and then the heating range of the cervical vertebra hot compress device is controlled to carry out cervical vertebra hot compress operation on the passenger.
The control module stores an imaging reference system of a human back head part, when the control module detects the head position of a passenger through the head pose sensor, the head data of the passenger are detected and compared with the imaging reference system, and therefore an image with available resolution is generated through three-dimensional projection modeling.
A headrest height adjusting method of an automatic headrest height and temperature adjusting device of an automobile seat comprises the following steps when the headrest height and temperature adjusting device of the automobile seat is used for adjusting the headrest height;
step S1: when a passenger gets on the vehicle and gets in the seat, if the safety belt is fastened according to a correct operation method, the safety belt plug board and the socket can be instantly locked, and a safety belt plug buckle triggering element in the safety belt plug buckle generates a triggering signal of 'passenger getting in the seat is finished';
step S2: the control module sends a control instruction to the overhead induction sensor and the head pose sensor after receiving a triggering signal of 'passenger seating completion' transmitted by the safety belt buckle triggering element in one direction; meanwhile, the control module prompts passengers by voice or images and requires the passengers to keep the trunk and the head in a static state for more than a short time relative to the automobile seat;
step S3: the head top induction sensor and the head pose sensor enter a working mode after receiving a control instruction, when the time for a passenger to keep a static state reaches a threshold value, the head top induction sensor generates images of the head top and the nearby area of the passenger in the time period, the head pose sensor generates images of the back head and the nearby area of the passenger in the time period, and the head top induction sensor and the head pose sensor convert image information into electric signals and feed the electric signals back to the control module;
step S4: the control module receives two groups of image electric signals fed back by the head top induction sensor and the head pose sensor, comprehensively compares and analyzes the two groups of electric signals, and outputs the motor running time and the running direction instruction to a stepping motor of the headrest lifting mechanism;
step S5: a stepping motor of the headrest lifting mechanism drives the headrest to vertically move to a position required by protection;
step S6: because the head pose sensor moves vertically along with the lifting of the headrest, the control module detects the head data of the passenger again through the head top induction sensor and the head pose sensor, and if the deviation value of the actual position of the headrest and the position required for protection exceeds the threshold value, the control module adjusts the position of the headrest again through the headrest lifting mechanism until the deviation value of the actual position of the headrest and the position required for protection is less than the threshold value.
A temperature adjusting method of an automatic adjusting device for the height and the temperature of a headrest of an automobile seat comprises the following steps of;
p1, acquiring vehicle cabin environment temperature data and passenger body temperature data by the control module, checking the optimal vehicle seat heating temperature under the current condition from a three-dimensional curved surface diagram of 'vehicle interior temperature-passenger body temperature-heating temperature' pre-stored in a memory of the control module, and outputting a temperature control instruction to the cervical vertebra hot compress device;
step P2, the cervical vertebra hot compress device maintains the heating temperature at the required heating temperature point according to the control instruction, and realizes the physiotherapy health care function of the cervical vertebra hot compress of the passenger;
and step P3, the heating temperature of the automobile seat needs to be adjusted regularly due to the fact that the environment temperature in the automobile and the body temperature of the passenger fluctuate along with the change of time, the control module collects the environment temperature data of the automobile cabin and the body temperature data of the passenger according to preset frequency, and the deviation value of the heating temperature is calculated to correct the temperature control instruction, so that the heating temperature of the cervical vertebra hot compress device is matched with the environment temperature in the automobile and the body temperature of the passenger.
In this example, the control module may be one of an industrial control P L C, a vehicle-mounted computer or a microcomputer.
In the example, when the passenger stops and the seat is adjusted to the lying posture, the head leaves the position right below the head top induction sensor, so the control module considers that the passenger is not in the driving posture and stops controlling the height of the headrest; and when the passenger lifts up the seat again, the head returns to the position right below the head top induction sensor, the control module considers that the passenger is in a driving state, the height of the headrest is calibrated and calculated again, and the headrest is controlled to lift to be matched with the head position of the passenger.
Claims (10)
1. The utility model provides a car seat headrest height and temperature automatic regulating apparatus which characterized in that: the adjusting device comprises a control module (20), a body posture positioning sensing assembly, a headrest lifting mechanism positioned at an automobile seat and a head posture sensor (17) positioned at a headrest; when a passenger gets on the automobile and sits on the automobile, if the body posture of the passenger on the automobile seat is detected to be the driving posture by the control module through the body posture positioning sensing assembly, the head position of the passenger is detected by the control module through the head posture sensor, and the headrest of the seat is vertically moved to the protection position matched with the head position of the passenger through the headrest lifting mechanism.
2. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 1, wherein: the posture positioning sensing assembly comprises a safety belt buckle triggering element (21) and a head top induction sensor (14) positioned at the top of the cabin; the driving posture is that a passenger sits on an automobile seat and correctly uses a safety belt, a headrest of the automobile seat supports the head of the passenger, the head of the passenger is positioned under a head sensing sensor, and the maintaining time reaches a threshold value; the overhead inductive sensor monitors the overhead part of the passenger.
3. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 2, wherein: the head pose sensor monitors the back brain part of the passenger; the protection position of the seat headrest matched with the head position of a passenger is that the height of the headrest is flush with the head of the passenger, or the middle soft part of the headrest is flush with the upper edge of the ear of the passenger.
4. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 1, wherein: the headrest is connected with the headrest U-shaped support frame; the headrest U-shaped bearer is connected with a trapezoidal thread screw rod of a headrest lifting mechanism through a threaded hole of a flat plate member (6) at the bottom; the stepping motor (10) of the headrest lifting mechanism is arranged at a motor retainer (9) of the middle supporting beam (1) of the automobile seat, and when the stepping motor (10) drives the trapezoidal thread screw (5) to rotate, a flat plate piece of the headrest U-shaped support is driven to vertically move, so that the headrest is driven to lift to a required position.
5. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 2, wherein: the middle supporting beam is fixed at a seat backrest frame (2) of a seat backrest (19); the vertical arms at two sides of the U-shaped headrest bearing frame are arranged at the connecting square column (4) at the upper part of the seat back frame (2) in a penetrating manner; the stepping motor is driven by a driving bevel gear (11) at the tail end of a spindle and a driven bevel gear (12) at the lower end of a trapezoidal thread screw rod in a meshed mode; the motor retainer is fixed at the middle supporting beam of the automobile seat through a nut (7) and a bolt (8).
6. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 2, wherein: the control module is arranged in the automobile seat and comprises a microprocessor, an I/O interface circuit and a system bus; when a passenger correctly uses the safety belt to lock the safety belt inserting plate and the inserting buckle, the safety belt inserting buckle triggering element unidirectionally sends a triggering signal for marking that the passenger is seated completely to the control module.
7. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 2, wherein: the adjusting device also comprises a physiotherapy component controlled by the control module; the physiotherapy assembly comprises a cervical vertebra hot compress device (18) arranged at the backrest of the seat and a man-machine interaction assembly (24) arranged at a vehicle-mounted central control screen (25); when the seat headrest is vertically moved to a protection position matched with the head position of a passenger, the cervical vertebra hot compress device is positioned behind the cervical vertebra of the passenger; when the passenger selects "cervical vertebra hot compress" physiotherapy health function on the on-vehicle central screen operation interface, the human-computer interaction subassembly sends passenger's physiotherapy request data to control module, after control module received the request data, earlier through in-car ambient temperature data of temperature sensor (15) collection, the passenger's body temperature sensor of rethread seat cushion department detects passenger's body temperature data, then the range of heating of control cervical vertebra hot compress device is in order to carry out cervical vertebra hot compress operation to the passenger.
8. The automatic adjusting device for the height and temperature of the headrest of the car seat according to claim 1, wherein: the control module stores an imaging reference system of a human back head part, when the control module detects the head position of a passenger through the head pose sensor, the head data of the passenger are detected and compared with the imaging reference system, and therefore an image with available resolution is generated through three-dimensional projection modeling.
9. A headrest height adjusting method of an automatic headrest height and temperature adjusting device of an automobile seat is characterized in that: the automatic headrest height and temperature adjusting apparatus for vehicle seats according to claim 2, comprising the steps of;
step S1: when a passenger gets on the vehicle and gets in the seat, if the safety belt is fastened according to a correct operation method, the safety belt plug board and the socket can be instantly locked, and a safety belt plug buckle triggering element in the safety belt plug buckle generates a triggering signal of 'passenger getting in the seat is finished';
step S2: the control module sends a control instruction to the overhead induction sensor and the head pose sensor after receiving a triggering signal of 'passenger seating completion' transmitted by the safety belt buckle triggering element in one direction; meanwhile, the control module prompts passengers by voice or images and requires the passengers to keep the trunk and the head in a static state for more than a short time relative to the automobile seat;
step S3: the head top induction sensor and the head pose sensor enter a working mode after receiving a control instruction, when the time for a passenger to keep a static state reaches a threshold value, the head top induction sensor generates images of the head top and the nearby area of the passenger in the time period, the head pose sensor generates images of the back head and the nearby area of the passenger in the time period, and the head top induction sensor and the head pose sensor convert image information into electric signals and feed the electric signals back to the control module;
step S4: the control module receives two groups of image electric signals fed back by the head top induction sensor and the head pose sensor, comprehensively compares and analyzes the two groups of electric signals, and outputs the motor running time and the running direction instruction to a stepping motor of the headrest lifting mechanism;
step S5: a stepping motor of the headrest lifting mechanism drives the headrest to vertically move to a position required by protection;
step S6: because the head pose sensor moves vertically along with the lifting of the headrest, the control module detects the head data of the passenger again through the head top induction sensor and the head pose sensor, and if the deviation value of the actual position of the headrest and the position required for protection exceeds the threshold value, the control module adjusts the position of the headrest again through the headrest lifting mechanism until the deviation value of the actual position of the headrest and the position required for protection is less than the threshold value.
10. A temperature adjusting method of an automatic adjusting device for the height and the temperature of a headrest of an automobile seat is characterized in that: the automatic adjusting apparatus for the height and temperature of a headrest for car seats of claim 7, wherein the method for performing the hot compress operation of cervical vertebrae on a passenger comprises the steps of;
p1, acquiring vehicle cabin environment temperature data and passenger body temperature data by the control module, checking the optimal vehicle seat heating temperature under the current condition from a three-dimensional curved surface diagram of 'vehicle interior temperature-passenger body temperature-heating temperature' pre-stored in a memory of the control module, and outputting a temperature control instruction to the cervical vertebra hot compress device;
step P2, the cervical vertebra hot compress device maintains the heating temperature at the required heating temperature point according to the control instruction, and realizes the physiotherapy health care function of the cervical vertebra hot compress of the passenger;
and step P3, the heating temperature of the automobile seat needs to be adjusted regularly due to the fact that the environment temperature in the automobile and the body temperature of the passenger fluctuate along with the change of time, the control module collects the environment temperature data of the automobile cabin and the body temperature data of the passenger according to preset frequency, and the deviation value of the heating temperature is calculated to correct the temperature control instruction, so that the heating temperature of the cervical vertebra hot compress device is matched with the environment temperature in the automobile and the body temperature of the passenger.
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| CN212219997U (en) * | 2020-05-28 | 2020-12-25 | 福州大学 | Automatic adjusting device for height and temperature of headrest of automobile seat |
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| WO2000044584A1 (en) * | 1999-01-27 | 2000-08-03 | The Furukawa Electric Co., Ltd. | Occupant detecting device |
| GB0225243D0 (en) * | 2001-10-30 | 2002-12-11 | Lear Corp | Automatic headrest adjustment control system for a vehicle seat assembly |
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