KR20070117966A - Automatic adjusting system of head restraint - Google Patents

Abstract

An automatic adjusting apparatus for a head rest is provided to protect a neck of a driver by adjusting height and distance of the head rest freely and adjusting the position of the head rest by an electronic control position memory device and positioning the head rest at the optimal position always. An automatic adjusting apparatus for a head rest comprises: a guide rod(25) inserted into a back support(11) of an automobile seat(10) for adjusting a height of a head rest(20). The head rest includes a movable body(21) and a fixed body(22). The movable body moves back and forth according to operation of a solenoid whose actuator is combined with the movable body. The lower end of the guide rod is combined with the back support in sliding type. A thread rod(14) is screwed to a nut(26) fixed to the middle of a lift(27). The lower end of the thread rod is coupled to the rotation shaft of a geared motor(13). Upper/lower and front/rear position sensors are mounted on the lift and the actuator. The upper/lower and front/rear position sensors, the geared motor and the solenoid are driven by a controller.

Description

Automatic adjusting system of head restraint}

1 is a perspective view illustrating an embodiment of the present invention,

2 is a partial cross-sectional view illustrating an embodiment of the present invention;

3 is a block diagram of a control unit illustrating an embodiment of the present invention;

4A and 4B are explanatory views of the up and down operation of the headrest illustrating one embodiment of the present invention;

5a and 5b is a front and rear view explaining the operation of the headrest illustrating an embodiment of the present invention,

6 is an exemplary view of an input button illustrating an embodiment of the present invention;

7 is a flow diagram of a controller illustrating one embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: car seat 11: backrest

12: guide ball 13: reduction motor

14: screw rod 15: vertical position sensor

20: headrest 21: moving body

22: fixture 23: solenoid

24: mover 25: guide rod

26: nut 27: platform

28: front and rear position sensor 30: control unit

31: Micom 32: Rom

33: A / D converter 33: input interface

35: power relay 36: output interface

37: flash memory 40: input button

41: memory button 42: memory address button

43: Up and down adjustment keys 44: Front and rear adjustment keys

50: collision detection sensor

The present invention relates to an automatic adjustment device for the headrest, and more particularly, the headrest position is automatically adjusted by applying an electronically controlled position memory device while freely adjusting the height and the distance between the front and rear of the headrest mounted on the vehicle seat back. When the driver is replaced, the headrest is automatically adjusted to the position memorized by each driver by selecting the memory number button so that the headrest is always positioned at the optimal position. The invention is directed to the closest to the invention to effectively prevent neck injury.

In general, the headrest position of the car seat must be adjusted to fit the body of the driver to prevent injury to the neck caused by the rear collision of the car. It is possible to adjust the position by up and down direction and tilting.

In addition, the driver does not adjust the position of the headrest to fit his / her body shape due to the inconvenience and inconvenience of manually adjusting the headrest, or due to a lack of awareness of the importance of the headrest when a rear collision occurs. As driving in the rear most of the accidents do not get the effect of the crash.

The present invention has been made in view of the above problems, the object of which is to automatically adjust the height of the headrest mounted on the seat back and the distance between the front and rear and at the same time by applying an electronically controlled position memory device automatically adjusts the headrest position When the driver is replaced, select the memory number button to automatically adjust the headrest to the position memorized by each driver so that the headrest is always positioned at the optimum position. It is to provide an automatic adjustment device of the headrest that can be quickly operated to close and effectively prevent neck injury.

Features of the present invention for achieving the above object, the headrest adjustment device for adjusting the height of the headrest 20 to the shanghai east of the guide rod 25 fitted to the upper portion of the backrest 11 of the vehicle seat 10 In the above, the headrest 20 is formed by separating the movable body 21 and the fixed body 22, the solenoid 23 is mounted on the fixed body 22, the mover 24 of the solenoid 23 Is coupled to the movable body 21, the movable body 21 is moved back and forth in accordance with the operation of the solenoid 23, the guide rod 25 is coupled to the lower portion of the fixed body 22, the lower end of the guide rod 25 It is slide coupled to both sides mounted inside the backrest 11, the screw rod 14 is screwed to the nut 26 fixed to the center of the platform 27, the lower end of the screw rod 14 is the backrest 11 It is coupled to the rotating shaft of the reduction motor (13) mounted therein, one side of the lifting platform 27 and the mover (24) up and down / front and rear position sensor (15) (28) is mounted, the up / down position sensor (15, 28), the reduction motor 13 and the solenoid 23 is driven by the control of the control unit 30 of the headrest It can be achieved by an automatic control device.

Hereinafter, described in detail by the accompanying drawings a preferred embodiment for achieving the above object is as follows.

As shown in Figure 1 to Figure 7, the present invention slides the guide rods 25 formed on both sides of the lower portion of the headrest 20 in the guide hole 12 formed on the upper back of the vehicle seat 10 Coupled to the headrest 20 is installed so that it can be elevated in the backrest (11).

The headrest 20 is separated into the movable body 21 and the fixed body 22, the solenoid 23 is mounted to the fixed body 22, and the movable body 24 of the solenoid 23 is movable body 21. The moving body 21 is moved back and forth in accordance with the operation of the solenoid 23 is coupled to.

A guide rod 25 is coupled to a lower portion of the fixed body 22, and a lower end of the guide rod 25 is slidably coupled to both sides of the platform 27 mounted inside the backrest 11.

The inside of the backrest 11 is equipped with a reduction motor 13, the screw rod 14 is coupled to the rotation shaft of the reduction motor (13).

The screw rod 14 is screwed to the nut 26 mounted in the center of the platform 27 is configured to move the platform 27 up and down in accordance with the rotation of the reduction motor 13, the platform ( Up and down movement of the 27 is transmitted to the headrest 20 coupled to the platform 27 and the guide rod 25 to move the headrest 20 up and down.

One side of the lifting platform 27 and the mover 24 is mounted up and down / front and rear position sensor 15, 28 to detect the moving position of the lifting platform 27 and the mover 24 to control the control unit 30 To pass on.

The up / down position sensors 15, 28, the reduction motor 13 and the solenoid 23 are driven by the control of the controller 30.

The control unit 30 includes a microcomputer (31) for the overall driving of the automatic control device; A ROM 32 which stores a drive program; An A / D converter 33 for converting signals of the up / down position sensors 15 and 28 and signals of the collision detection sensor 50 installed in the rear bumper of the vehicle; An input button 40 composed of a memory button 41, a memory address button 42, an up and down adjustment key 43, and a forward and backward adjustment key 44; An input interface 34 which converts a signal of the input button 40 and inputs it to the microcomputer 31; A flash memory 37 for storing detection values of the up / down / front / back position detection sensors 15 and 28 according to the memory address button 42; A power relay 35 for intermittent power supply of the reduction motor 13 and the solenoid 23; It is composed of an output interface 36 for driving the deceleration motor 13 and the solenoid 23 by converting the drive signal of the reduction motor 13 and the solenoid 23 output from the microcomputer 31.

The operation of the present invention having such a configuration will be described with reference to the flowchart of FIG.

First, the microcomputer 31 reads a program stored in the ROM 32 to drive the device of the present invention. The microcomputer 31 senses the speed of the vehicle by using a device already mounted in the vehicle ( S110).

The microcomputer 31 determines whether the vehicle is in a stopped state (S111). If the vehicle is in a stopped state, the microcomputer 31 proceeds to the next step S113. If the microcomputer 31 is not in the stopped state, the microcomputer 31 determines whether an impact is detected by the collision detection sensor 50. If a shock is detected, the process proceeds to step S134 and if a collision is not detected, the process proceeds to step S133 (S112).

The microcomputer 31 determines whether the memory button 41 is on, and if so, proceeds to step S114 and, if off, to step S117 (S113).

Here, the memory button 41 is a button used when the driver or the passenger wants to remember the current position of the headrest 20.

In addition, signals of all the input buttons 40 are transmitted to the microcomputer 31 through the input interface 34.

If the memory button 41 is on, the microcomputer 31 receives the address to be stored from the driver or the passenger through the memory address button 42 (S114).

When the memory address is input through the memory address button 42, the microcomputer 31 reads the upper and lower positions of the current lift platform 27 from the upper and lower position detection sensors 15, and lifts the lift table to the corresponding address of the flash memory 37. The current position of 27 is stored (S115).

Further, the microcomputer 31 reads the front and rear positions of the current mover 24 from the front and rear position sensor 28, stores the current position of the mover 24 at the corresponding address of the flash memory 37, and proceeds to step S110. To proceed (S116).

If the memory button 41 is not on, the microcomputer 31 determines whether the memory address button 42 is on and proceeds to the next step S122 if the memory address button 42 is on. If not, the flow proceeds to step S118 (S117).

Here, the memory address button 42 is a button for the address of the flash memory 37 for storing or recalling the position of the headrest 20 fitted to the driver or the passenger.

If the memory address button 42 is not in the on state, the microcomputer 31 determines whether there is an input of the up / down adjustment key 43, and if there is no input, proceeds to step S118 and if there is an input, proceeds to step S119 (S118). ).

When the up / down adjustment key 43 is input, the microcomputer 31 drives the power relay 35 and drives the speed reduction motor 13 through the output interface 36. The screw rod 14 is driven by the rotational force of the speed reduction motor 13. Table 26 is rotated, the nut 26 screwed to the screw rod 14 is moved up and down in accordance with the rotation direction of the reduction motor 13, the lifting platform 27 is fixed to the nut 26 by the movement of the nut 26 ) Is moved up and down so that the headrest 20 is moved up and down (S119).

The microcomputer 31 determines whether there is an input of the front and rear adjustment key 44, and if there is no input, proceeds to step S120, and if there is an input, proceeds to step S121 (S120).

When the input and output adjustment key 44 is input, the microcomputer 31 drives the power relay 35 and drives the solenoid 23 through the output interface 36. The actuator 24 of the solenoid 23 moves to the solenoid ( After moving back and forth according to the polarity of the applied 23 and the headrest 20 coupled to the mover 24 forward and backward proceed to step S110 (121)

Here, the operation of the up / down adjustment keys 43 and 44 is to adjust the headrest 20 so as to be positioned near the back of the neck of the driver or the passenger.

If there is an input of the memory address button 42, the microcomputer 31 reads data of the corresponding address input from the flash memory 37 (S122).

The microcomputer 31 reads the value of the current vertical position detecting sensor 15 (S123).

The microcomputer 31 compares the value of the up-down position detecting sensor 15 with the value read from the flash memory 37 and proceeds to step S128 if the two values are the same, and proceeds to step S125 if the two values are different (S124).

If the two values are different from each other, the microcomputer 31 compares the value of the up-down position detecting sensor 15 with the value read from the flash memory 37 again, and if the value of the up-down position detecting sensor 15 is large, the step S126 is small. Proceed to S127 (S125).

If the value of the up-down position detecting sensor 15 is large, the microcomputer 31 drives the reduction motor 13 to move the lifting platform 27 one step down and proceeds to step S123 (S126).

If the value of the up-down position detecting sensor 15 is small, the microcomputer 31 drives the reduction motor 13 to move the lifting platform 27 up by one step, and proceeds to step S123 (S127).

The microcomputer 31 compares the value of the up and down position sensor 15 with the value read from the flash memory 37, and if the two values are the same, the microcomputer 31 reads the current front and rear position sensor 28. (S128).

The microcomputer 31 compares the values of the front and rear position sensor 28 and the value read from the flash memory 37, and if the two values are the same, the process proceeds to step S1110 and if the two values are different, the process proceeds to step S130.

If the two values are different, the microcomputer 31 compares the values of the front and rear position sensor 28 and the value read from the flash memory 37 again, and if the value of the front and rear position sensor 28 is large, the step S131 is small. Proceed to S132 (S130).

If the value of the front and rear position detecting sensor 28 is large, the microcomputer 31 drives the solenoid 23 to move the mover 24 one step forward and proceeds to step S128 (S131).

If the value of the front and rear position detecting sensor 28 is small, the microcomputer 31 drives the solenoid 23 to move the mover 24 one step back and proceeds to step S123 (S132).

If the collision is not detected in the step 112, the microcomputer 31 turns off the power relay 35 to cut off the power of the reduction motor 13 and the solenoid 23 and proceeds to step S110 (S133).

Here, when the vehicle is in operation to prevent the control of the headrest 20 in order to prevent a safety accident due to the adjustment of the headrest 20.

If a collision is detected in the step 112, the microcomputer 31 determines whether any one of the memory button 41 or the memory address button 42 is on, and if so, proceeds to step 110 and the memory button ( 41) or if none of the memory address buttons 42 are turned on (step S134).

If none of the memory button 41 or the memory address button 42 is on, the microcomputer 31 reads the position of the most recently used headrest 20 into the flash memory 37 to decelerate. The motor 13 and the solenoid 23 are driven to move the headrest 20 to the position of the headrest 20 read from the flash memory 37, and the flow proceeds to step S110 (S135).

Here, when none of the memory button 41 or the memory address button 42 is turned on, the headrest 20 is not at the optimum position of the driver or rider, and the collision speed reduction motor 13 and The solenoid 23 is drastically driven to position the headrest 20 at the driver's or rider's optimal position within 70 ms before the impact is transmitted, thereby preventing injury to the driver's or rider's neck due to collision. It is to prevent on.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such modifications are intended to fall within the scope of the appended claims.

According to the present invention as described above, when the driver or the occupant has a rear collision accident to the car by moving the headrest to a desired position by using the up / down / rear adjustment keys and memorizing them, the driver or the occupant It is a position that protects the head and neck of the body in optimal condition. It can automatically adjust the height and the front and rear position of the headrest, and effectively prevents the neck injury that may occur, thereby preventing the driver from the risk of collision. It can be safely protected, and the adjustment of the headrest is made automatically, so that the convenience and maximum efficiency of the use can be maximized.

Claims (2)

In the headrest adjusting device for adjusting the height of the headrest 20 to the shanghai east of the guide rod 25 fitted to the upper portion of the backrest 11 of the vehicle seat 10, The headrest 20 is formed by separating the movable body 21 and the fixed body 22, the solenoid 23 is mounted to the fixed body 22, and the movable body 24 of the solenoid 23 is a movable body ( 21 is coupled to the movable body 21 is moved back and forth according to the operation of the solenoid 23, the guide rod 25 is coupled to the lower portion of the fixed body 22, the lower end of the guide rod 25 is the backrest 11 The slide bar is coupled to both sides mounted in the inside, the screw rod 14 is screwed to the nut 26 fixed to the center of the platform 27, the lower end of the screw rod 14 is mounted inside the backrest 11 It is coupled to the rotating shaft of the reduced speed motor 13, one side of the lifting platform 27 and the mover 24 is mounted up and down / front and rear position sensor 15, 28, and up and down / front and rear position sensor 15 (28), the reduction motor (13) and the solenoid (23) is an automatic adjustment device of the headrest, characterized in that to be driven by the control of the control unit (30). The method of claim 1, The control unit 30 includes a microcomputer (31) for the overall driving of the automatic control device; A ROM 32 which stores a drive program; An A / D converter 33 for converting the signals of the up / down position sensors 15 and 28 and the signal of the collision detection sensor 50 installed in the rear bumper of the vehicle; An input button 40 composed of a memory button 41, a memory address button 42, an up and down adjustment key 43, and a forward and backward adjustment key 44; An input interface 34 which converts a signal of the input button 40 and inputs it to the microcomputer 31; A flash memory 37 for storing detection values of the up / down / front / back position detection sensors 15 and 28 according to the memory address button 42; A power relay 35 for intermittent power supply of the reduction motor 13 and the solenoid 23; The headrest of the headrest, characterized in that consisting of an output interface 36 for driving the reduction motor 13 and the solenoid 23 by converting the drive signal of the reduction motor 13 and the solenoid 23 output from the microcomputer (31) Automatic control device.

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