CN109910705A

CN109910705A - Neck protection device and neck protection method for motor vehicle

Info

Publication number: CN109910705A
Application number: CN201910245464.1A
Authority: CN
Inventors: 季鑫; 叶茂; 孙爽; 娜仁图雅
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2019-06-21

Abstract

The invention discloses a neck protection device for a motor vehicle and a neck protection method, comprising a control unit, an adjustment seat, an adjustment device and a radar. The safety distance of the vehicle and the safety of the head and the headrest are preset in the control unit. Since the headrest is hinged with the seat back, the headrest can rotate around the seatback. When the distance between the head and the headrest is greater than the safe distance, the adjusting device controls the headrest to rotate to the side of the occupant, so that the head and the headrest When the distance is less than the safety distance, in the event of a rear-end collision, the headrest can protect the neck of the occupant and improve the safety performance of the vehicle.

Description

A kind of neck-protecting device and neck guard method for motor vehicle

Technical field

Design vehicle security technology area of the present invention, and in particular to a kind of for the neck-protecting device of motor vehicle and neck guard side Method.

Background technique

The automobile vehicles indispensable as contemporary society, during high speed driving, front truck is slowed down or is stopped Che Shi, if just will appear rear car can not stop in time when the braking distance deficiency of rear car, brake failure or inadequate brake efficiency Vehicle causes rear-end collision.When front truck is knocked into the back by front vehicle, the personnel on front truck are in crash acceleration and head inertia force Under collective effect, neck can generate a front and back whipping, and the movement hit suddenly as whip " whips phenomenon ".After accident, due to people The neck of body is more fragile, often will cause neck injury, the rehabilitation course of neck injury is extremely complex and very long, when serious very To will cause the permanent injury that can not be cured.

Problem in view of the prior art, it is really necessary to design a kind of car crass neck guard seat chair, when making to occur rear-end collision Passenger neck is by injury as few as possible.

Summary of the invention

Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of neck-protecting devices for motor vehicle And neck guard method controls front truck person head at a distance from headrest, avoids the situation that knocks into the back according to the following distance of rear car When, cause the neck injury of occupant.

The present invention is to be achieved through the following technical solutions:

A kind of neck-protecting device for motor vehicle, including control unit, adjusting seat, regulating device, vehicle tail radar and head Rest the head on radar；

Adjusting seat includes seat and headrest, is rested the head on hinged with the chair back of seat, and regulating device is mounted in the chair back, and with Headrest connection, regulating device are used to control the rotation direction of headrest；

Vehicle tail radar and headrest radar are separately mounted at the tailstock and headrest, and vehicle tail radar is used to measure the vehicle between two vehicles Away from headrest radar is for measuring occupant's head at a distance from headrest；

Control unit is connect with vehicle tail radar, headrest radar and regulating device respectively, and control unit is for receiving tailstock thunder It reaches and the distance parameter for detections of radar of resting the head on, and is compared with preset secure threshold, exported according to comparison result and adjust dress The action signal set.

Preferably, the adjusting seat includes the seat plate connecting with vehicle frame, the chair back is arranged on seat plate, the chair back includes phase Mutually the hinged upper chair back and the lower chair back, the lower end of the lower chair back are connect with seat plate, and the upper end of the lower chair back and the lower end of the upper chair back are logical Cross that articulation piece is hinged, the top of the upper chair back is arranged in headrest.

Preferably, the articulation piece is connect with the bracket of the upper chair back and the lower chair back respectively, and is located at one end of bracket, the end For close to one end of occupant.

Preferably, articulation piece includes fixed pin and sleeve, and fixed pin is horizontally arranged at the cradle top of the lower chair back, and is located at Close to one end of occupant, sleeve is sleeved on fixed pin, and is connect with the bracket of the upper chair back.

Preferably, the regulating device includes electric pushrod and connecting rod；

The back of the chair back is arranged in the connecting rod, and the upper end of the connecting rod is flexibly connected with the upper chair back, connecting rod Middle part and the upper end of the lower chair back are hinged, and electric pushrod is arranged in the lower chair back, and the back of the lower chair back is stretched out in one end of electric pushrod It is connect with the lower end of connecting rod.

Preferably, the vehicle tail radar and headrest radar are ultrasonic radar.

The present invention also provides a kind of neck guard methods of neck-protecting device for motor vehicle, include the following steps；

Step 1, the spacing between rear car and front truck is obtained；

Step 2, control unit judges whether the spacing obtained is less than safe distance between vehicles, when spacing is less than safe distance, obtains Take front truck occupant's head at a distance from headrest；

Step 3, whether the head that control unit judgment step 2 obtains is greater than safe distance at a distance from headrest, works as acquisition When distance is greater than safe distance, electric pushrod adjustment headrest with head at a distance from, make head be less than at a distance from headrest it is safe away from From.

Preferably, pass through radar or distance measuring sensor acquisition distance parameter in step 1 and step 2.

Preferably, the safe distance of the head in the step 2 and headrest is 5cm.

Preferably, further include step 4 after step 3, when the spacing of rear car and front truck is greater than safe distance between vehicles, adjust headrest Position is to initial position.

Compared with prior art, the invention has the following beneficial technical effects:

The present invention also provides a kind of neck-protecting devices for motor vehicle, including control unit, adjusting seat, regulating device And radar, the safe distance between vehicles of preset vehicle and the safe distance on head and headrest in control unit, since headrest and the chair back are cut with scissors Connect, thus headrest can rotate around the chair back, when head at a distance from headrest be greater than safe distance when, regulating device control rest the head on to The side of occupant rotates, and when head being made to be less than safe distance at a distance from headrest, when rear-end collision occurs, headrest can be to multiplying The neck of member is protected, and the security performance of vehicle is improved.

Further, the chair back is designed as the two parts being hinged, the movement of headrest is driven by rotating the upper chair back, Headrest and the upper chair back is set to play a protective role simultaneously to occupant.

Further, articulation piece is positioned close to one end of occupant, the chair back and the faying face of the lower chair back is made to play positioning Effect, i.e., position the initial position of the upper chair back.

Further, make connecting rod and the upper end of the lower chair back hinged, electric pushrod push connecting rod upper end, make connecting rod around Hinged end rotation, the upper end of connecting rod drive upper chair back rotation, adjust the position of headrest, structure is simple, stable.

A kind of neck guard method for motor vehicle provided by the invention adjusts vehicle by the spacing between front truck and rear car Interior person head makes it be less than people's air defense distance at a distance from headrest；In vehicle rear-end collision accident, the head of occupant is in whipping When, headrest can play protective action to the neck of occupant, reduce the damage to occupant, improve security performance by bus.

Further, range data is acquired using radar or distance measuring sensor, ensure that the reliability of data.

Further, when the distance between two vehicles are greater than safe distance, the distance of headrest is adjusted to initial position, raising multiplies The comfort of seat.

Detailed description of the invention

Fig. 1 is the flow chart of neck guard method of the present invention；

Fig. 2 is the complete vehicle structure schematic diagram of neck-protecting device of the present invention；

Fig. 3 is the scheme of installation of seat of the present invention and regulating device.

It include 1, headrest in figure；2, bolt；3, connecting rod；4, electric pushrod；5-1, fixed pin；5-2, first rotating shaft；5- 3, the second shaft；6, headrest radar；7, vehicle tail radar.

Specific embodiment

Present invention will be described in further detail below with reference to the accompanying drawings, described to be explanation of the invention rather than limit It is fixed.

Refering to fig. 1, a kind of neck guard method for motor vehicle, includes the following steps；

Step 1, the spacing between rear car and front truck is obtained；

Obtaining spacing, the specific method is as follows:

Radar is installed in the tail portion of front truck, radar obtains the spacing between rear car and front truck in real time.

The radar is ultrasonic radar.

Step 2, whether the spacing that judgment step 1 obtains is less than preset safe distance, when spacing is less than safe distance, Front truck occupant's head is obtained at a distance from headrest 1；

Obtaining head, the specific method is as follows with 1 distance of headrest:

The mounting distance detector on the headrest of vehicle measures hindbrain position and the chair headrest 1 of the occupant's head Distance.

The range finder is radar or range sensor.

Step 3, whether the distance that judgment step 2 obtains is less than preset distance, is less than preset distance when obtaining distance When, adjustment headrest 1 makes it be less than preset distance at a distance from head.

Specific method of adjustment is as follows, and the distance of mobile headrest shortens it at a distance from person head.

A kind of neck guard method for motor vehicle provided by the invention adjusts vehicle by the spacing between front truck and rear car Interior person head makes it be less than safe distance at a distance from headrest；In vehicle rear-end collision accident, shorten getting rid of for occupant head Dynamic distance, headrest can play protective action to the neck of occupant, reduce the damage to occupant, improve security performance by bus.

With reference to Fig. 2~3, the present invention also provides a kind of neck-protecting device for motor vehicle, including radar, adjust seat, Regulating device and control unit.

Wherein, radar includes the vehicle tail radar 7 for being mounted on vehicle tail and the headrest radar for being mounted on chair headrest surface 6。

Adjusting seat includes the seat plate connecting with vehicle frame, is arranged the chair back on seat plate, the chair back include be hinged it is upper The chair back and the lower chair back, the lower end of the lower chair back are connect with seat plate, and the upper end of the lower end of the upper chair back and the upper chair back is cut with scissors by articulation piece It connects, the upper end of the upper chair back is provided with headrest 1.

Articulation piece includes fixed pin 5-1 and sleeve, and fixed pin 5-1 is mounted on the top of the lower chair back, and is located at close to occupant One end, fixed pin 5-1 connect with the bracket of the lower chair back；Sleeve is sleeved on fixed pin 5-1, and is connected with the bracket of the upper chair back It connects.

The articulation piece can also be replaced using hinge, be coaxially disposed several conjunctions between the upper chair back and the lower chair back Page, the installation site of hinge and the installation site of articulation piece are identical, in rotation when the chair back, can make 1 side to occupant of resting the head on It is mobile.

Regulating device includes electric pushrod 4, pull rod and connecting rod 3.

Control unit is connect with headrest radar 6, vehicle tail radar 7 and electric pushrod 4 respectively, and two vehicles are preset in control unit The safety distance threshold of safe distance between vehicles and headrest and occupant's head；

Control unit is used to receive the distance that radar 6 and vehicle tail radar 7 detect of resting the head on, and with preset secure threshold into Row compares, and according to comparison result output action signal, controls the working condition of electric pushrod 4.

The back of the chair back is arranged in connecting rod 3, and electric pushrod 4 is arranged in the lower chair back, under one end of electric pushrod 4 is stretched out The back of the chair back is connect with the lower end of connecting rod 3.

The top of the lower chair back is provided with horizontal first rotating shaft 5-2, and the both ends of first rotating shaft 5-2 are mounted on lower chairback brace Both ends, pull rod is provided on first rotating shaft 5-2, one end of pull rod is stretched out bracket and connect with the middle part of connecting rod 3, connecting rod 3 It is rotated by pull rod around first rotating shaft 5-2.

The second shaft 5-3 is provided at the top of the upper chair back, the both ends horizontal of the second shaft 5-3 is mounted on chairback brace Both ends, are provided with pull rod on the second shaft 5-3, and the upper end that the upper chair back and connecting rod 3 are stretched out in one end of pull rod passes through bolt 2 and cuts with scissors It connects.

When adjustment device work, electric pushrod 4 pushes the lower end of connecting rod 3 to move to tailstock direction, due to connecting rod 3 Middle part connect with first rotating shaft 5-2 by pull rod, therefore, the upper end of connecting rod 3 is to the rotation of the direction of advance of vehicle, due to connecting The upper end of bar 3 is hinged by pull rod and the second shaft 5-3, and therefore, the upper end of connecting rod 3 in the process of moving, can make The chair back is rotated to the direction of occupant, i.e., so that 2 head movements to occupant of headrest, reduce between headrest 2 and passenger head Distance.When radar 6 of resting the head on detects headrest the distance between 2 and passenger head in safe range, electric pushrod 4 Stop motion, and then complete the adjustment of headrest positions.

It should be noted that the regulating device is the use when rear car is likely to occur rear-end collision, when rear car and front truck Distance when increasing, electric pushrod 4 drives the lower end reverse movement of connecting rod 3, so that headrest 2 is returned back to initial position, improves vehicle The comfort of seat.

A kind of working principle of neck-protecting device for motor vehicle is explained in detail below.

Step 1, it presets in a control unit between safe distance between vehicles and occupant's head and the headrest between two vehicles Safe distance.

Step 2, the spacing of vehicle tail radar 7 the real-time monitoring tailstock and rear car of front truck, and send the data to control unit It is compared, when spacing is less than preset safe distance between vehicles, which is precarious position.

Step 3, headrest radar 6 detection headrest is at a distance from occupant, and the distance is issued to control unit and is compared, When the distance is less than preset safe distance, control unit output control signal, control electric pushrod 4 works, electric pushrod 4 It stretches out and then headrest 1 is adjusted at a distance from occupant's head by connecting rod 3, headrest 1 is made to be less than safety at a distance from occupant's head Distance, when the distance is less than safe distance, control unit controls electric pushrod and stops.

The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention Protection scope within.

Claims

1. A neck support device for a motor vehicle, characterized in that it comprises a control unit, an adjusting seat, an adjusting device, a rear radar (7) and a headrest radar (6);

The adjustable seat comprises a seat and a headrest (1), the headrest (1) is hinged with the seat back of the seat, an adjustment device is installed in the seat back and connected with the headrest (1), and the adjustment device is used to control the movement of the headrest. direction of rotation;

The rear radar (7) and the headrest radar (6) are installed at the rear of the vehicle and the headrest (1) respectively. The rear radar (7) is used to measure the distance between the two vehicles, and the headrest radar (6) is used for To measure the distance between the occupant's head and the headrest (1);

The control unit is respectively connected with the rear radar (7), the headrest radar (6) and the adjusting device, and the control unit is used to receive the distance parameters detected by the rear radar (7) and the headrest radar (6), and communicate with the preset distance parameters. The safety threshold is compared, and the action signal of the adjustment device is output according to the comparison result.

2 . The neck support device for a motor vehicle according to claim 1 , wherein the adjustable seat comprises a seat plate connected with the vehicle frame, the seat plate is provided with a seat back, and the seat back comprises hinged hinged parts. 3 . The upper seat back and the lower seat back, the lower end of the lower seat back is connected with the seat board, the upper end of the lower seat back is hinged with the lower end of the upper seat back through a hinge, and the headrest (1) is arranged on the top of the upper seat back.

3 . The neck support device for motor vehicles according to claim 2 , wherein the hinge parts are respectively connected with the brackets of the upper seat back and the lower seat back, and are located at one end of the bracket, which is close to the occupant. 4 . one end.

4. The neck support device for motor vehicles according to claim 3, characterized in that the hinge part comprises a fixing pin (5-1) and a sleeve, and the fixing pin (5-1) is horizontally installed on the top of the bracket of the lower seat back , and is located at the end close to the occupant, the sleeve is sleeved on the fixing pin (5-1), and is connected with the bracket of the upper seat back.

5. The neck support device for a motor vehicle according to claim 2, wherein the adjusting device comprises an electric push rod (4) and a connecting rod (3);

The connecting rod (3) is arranged on the back of the seat back, the upper end of the connecting rod (3) is movably connected with the upper seat back, the middle part of the connecting rod (3) is hinged with the upper end of the lower seat back, and the electric push rod (4) ) is arranged in the lower seat back, and one end of the electric push rod (4) protrudes out of the back of the lower seat back and is connected with the lower end of the connecting rod (3).

6 . The neck protection device for motor vehicles according to claim 1 , wherein the rear radar ( 7 ) and the headrest radar ( 6 ) are both ultrasonic radars. 7 .

7. A neck protection method based on the neck protection device for a motor vehicle according to any one of claims 1-6, characterized in that, comprising the following steps;

Step 1, obtain the distance between the rear vehicle and the front vehicle;

Step 2, the control unit determines whether the obtained vehicle distance is less than the safety distance, and when the vehicle distance is less than the safety distance, obtains the distance between the head of the occupant in front and the headrest (1);

Step 3, the control unit judges whether the distance between the head and the headrest (1) obtained in step 2 is greater than the safety distance, and when the obtained distance is greater than the safety distance, the electric push rod adjusts the distance between the headrest (1) and the head, so that the head The distance between the headrest (1) and the headrest (1) is less than the safety distance.

8 . The neck protection method for a motor vehicle according to claim 7 , wherein in steps 1 and 2, the distance parameters are collected by radar or a ranging sensor. 9 .

9 . The neck protection method for a motor vehicle according to claim 7 , wherein the safety distance between the head and the headrest ( 1 ) in the step 2 is 5 cm. 10 .

10. The neck protection method for motor vehicle according to claim 7, characterized in that, after step 3, the method further comprises the following steps;

Step 4: When the distance between the rear vehicle and the front vehicle is greater than the safe distance, adjust the position of the headrest to the initial position.