KR100643858B1 - Height Control Device Of Head Rest - Google Patents

Abstract

The present invention relates to a headrest height adjustment device is provided with a guide bar (2) coupled to the top of the seatback (3) to the vertical movement at the bottom, the headrest body (1) supporting the occupant's head and the seatback ( 3) is mounted inside the motor 5 is rotated by the electric power supplied by the switch operation, and a continuous spiral groove is dug on the outer circumferential surface, so that both ends are directed to the upper, lower portion of the seat back (3) A screw bar 6 mounted on a rotating shaft of the motor 5 and rotated by the rotation of the motor 5, and screwed to the screw bar 6, and guide bars of the headrest body 1 on both sides. The lifting and lowering nut 7 provided with the fastener 7a to which (2) is fixed, and the electric power supplied to the motor 5 are supplied and cut off, and the rotation direction of the motor 5 is changed in accordance with the switch operation. It consists of a control means (8) for controlling the movement of the headrest body (1), When the motor 5 is rotated by the operation of the control means 8, the headrest body 1 rotates up and down the lifting nut 7 according to the rotation direction while the screw bar 6 rotates, thereby causing the headrest body 1 to be rotated. ) Is going up or down.

In other words, the occupant can simply adjust the height of the headrest by operating the control means 8, it is possible to position the headrest to a height that fits the height of his head.

In addition, the passenger can store the height of the headrest that fits his body type through the memory switch, so even if the height of the headrest is changed when boarding, simply press the stored memory switch to easily position the height of the headrest to suit his body type. It is.

Therefore, it is a very useful invention that can increase the convenience of the occupant and significantly increase the merchandise of the vehicle.

Description

Headrest Height Control Device {Height Control Device Of Head Rest}

 Figure 1 is an enlarged perspective view of the main part showing a conventional headrest

Figure 2 is a schematic diagram showing the operating state of the present inventor headrest height adjustment device

Figure 3 is a block diagram showing the control means of the present inventor headrest height adjustment device

* Description of the major symbols in the drawings *

1: Headrest Body 2: Guide Bar

3: seat back 5: automatic lifting means

6: control means 10: power control unit

20: lift switch 21: lift switch

22: lowering switch 30: memory switch unit

31: memory switch 40: input unit

50: position detection sensor 60: program control unit

70: position storage unit 80: motor drive control unit

The present invention relates to a height adjusting device of the head rest, and more particularly, to store the height of the head rest, and is invented to increase the convenience of the occupant by automatically moving the head head rest to the stored height according to the occupant.

In general, a seat of a vehicle is a structure in which the occupant sits and supports the body of the occupant, and a seat cushion for the occupant's lower body to support the occupant's lower body and a seat cushion that is erected at the rear of the seat cushion to support the back of the occupant It consists of a seatback.

 In addition, the top of the seat back is equipped with a head rest that can support the head of the occupant, to comfortably support the head of the occupant while driving to maintain a comfortable posture while driving.

As described above, the headrest not only serves to support the occupant seated on the seat of the vehicle when leaning on the head, but also supports the head of the occupant so that the head of the occupant does not shake back and forth in the event of a collision. .

On the other hand, the seatback of the car seat is fixed at a constant height so that the headrest can not be supported by the seated height of the occupant who rests on the seatback. The height of the head restraint is adjusted to fit the passenger's head comfortably.

As shown in FIG. 1, the head rest is provided with a guide bar 2 in which a plurality of height adjusting grooves 2a are provided at intervals along the length direction at the lower part of the head rest body 1.

The guide bar 2 is coupled to the upper portion of the seat back 3, and the guide stay 4 is provided with a locking tool 4 a for controlling the height adjusting groove 2 a of the guide bar 2. .

That is, the headrest is coupled to the guide bar (4) installed on the lower portion of the headrest body (1) to the guide stay (4) installed on the upper portion of the seat back (3), the guide stay (4) in the fitted state Locking port (4a) provided in the is fitted into the height adjusting groove (2a) of the guide bar (2) is to be fixed to the position of the headrest body (1).

The head restraint body (1) is operated from the height adjusting groove (2a) of the guide bar (2) by operating the locking mechanism (4a), and then move the body of the headrest (1) up and down to the height of the occupant's head After fitting, locking height (4a) is to be adjusted to fit the height adjustment groove (2a) corresponding to the adjusted height is to adjust the height.

However, as described above, the conventional headrest has been inconvenient for the passenger to operate the locking mechanism by hand to adjust the height of the headrest body.

In addition, since the position is fixed only at the height where the locking mechanism is fitted into the height adjusting groove of the guide bar, fine height adjustment is impossible, and the height of the headrest has to be newly adjusted every time according to the body type of the occupant. will be.

In other words, if the occupant adjusts the height of the headrest to fit his body type and then rides again after another passenger rides, he has to adjust the height of the headrest again to fit his body shape.

SUMMARY OF THE INVENTION An object of the present invention is to provide a headrest height adjusting device for easily increasing and lowering the height of a headrest that fits the body type of a passenger mainly occupying a vehicle by rotating a motor, thereby increasing convenience and allowing fine height adjustment. have.

Another object of the present invention is to provide a headrest height adjustment device that can increase the convenience of the height of the headrest is automatically adjusted by selecting the input number suitable for their body shape by storing the height of the headrest fit the occupant's body type There is.

An object of the present invention is provided with a guide bar (2) coupled to the upper portion of the seat back (3) to be movable vertically, the headrest body (1) supporting the occupant's head;
In the provided with a height adjusting means for adjusting the vertical height of the headrest (1);
The height adjusting means is mounted inside the seatback (3), the motor (5) rotates by receiving electric power by the switch operation,

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Continuous spiral grooves are dug on the outer circumferential surface, and screw bars 6 mounted on the rotating shaft of the motor 5 so that both ends face the upper and lower portions of the seat back 3 and rotated by the rotation of the motor 5 and ,

A lifting nut (7) screwed to the screw bar (6) and having a fixture (7a) on both sides of which the guide bar (2) of the headrest body (1) is fixed;

Control means 8 for supplying and cutting off the electric power supplied to the motor 5 and controlling the lifting and lowering movement of the headrest body 1 by changing the rotational direction of the motor 5 according to a switch operation. It is achieved by being configured.

That is, the headrest body 1 is to move the lifting bar 7 in accordance with the rotation direction while the screw bar 6 rotates when the motor 5 rotates by the operation of the control means (8). .

Therefore, the headrest body 1 fixed to the fastener of the elevating nut 7 is automatically raised and lowered so that the height of the headrest can be easily adjusted.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

Figure 2 is a schematic diagram showing the operating state of the headrest height adjustment device of the present invention, the automatic lifting means for raising and lowering the headrest body inside the seat back is built, the headrest body by the automatic lifting means It works.

Fig. 3 is a block diagram showing the control means of the headrest height adjusting device of the present invention, and shows each linked state of the control means.

Hereinafter, as shown in FIG. 2, the headrest body 1 coupled to the upper portion of the seatback 3 is provided with a guide bar 2 having a predetermined length at a lower interval.

 The headrest body 1 is a guide bar 2 is inserted into the upper portion of the seat back (3) is coupled to, and is positioned at a certain height on the upper portion of the seat back (3), it is formed of a soft cushion to maintain a comfortable ride And, even if the head hits the headrest body (1) strongly so as not to hurt.

The seatback 3 has a motor 5 for driving the headrest body 1 up and down by electric power as a means for adjusting the height of the headrest body 1. The electric power is supplied to generate a rotational force, and is mounted inside the seatback 3 so that its rotational axis faces the top of the seatback 3.

The rotating shaft of this motor 5 is equipped with the screw bar 6 in which the spiral groove continuous in the outer peripheral surface is mounted, and rotates by the rotation of the motor 5. As shown in FIG.

Lifting nut (7) is screwed to the screw bar (6), the fastener (7a) is fixed to the guide bar (2) of the headrest body (1) on both sides of the lifting nut (7) It is provided.

That is, when the motor 5 is supplied with electric power and rotates, the lifting nut 7 moves up and down according to the rotation direction of the screw bar 6, and the lifting nut 7 moves up and down. When moved, the guide bars 2 fixed to both sides are also moved.

Accordingly, when the motor 5 rotates in the direction of moving the lifting nut 7 upward, the screwbar 6 rotates to move the lifting nut 7 upward, and thus the headrest body 1 moves up and down. It will be.

When the motor 5 rotates in the reverse direction, the screw bar 6 rotates in the opposite direction and moves the lifting nut 7 downward, thereby lowering the headrest body 1.

On the other hand, the automatic lifting means 5 is controlled by the control means 8 including the lifting switch unit 20.

As shown in FIG. 2, the control means 8 of the present invention includes a power supply control unit 10, a lift switch unit 20, a memory switch unit 30, an input unit 40, and a position detection sensor unit 50. , The program controller 60, the position storage unit 70, and the motor drive control unit 80.

The power control unit 10 is connected to the battery of the vehicle to cut off the electric power supply for rotating the motor 5, this supply, the cut-off is to the operation of the elevating switch unit 20 and the memory switch unit 30 to be described later Is controlled by

The power control unit 10 is connected to the elevating switch unit 20 and the memory switch unit 30 through the program control unit 60 to operate the elevating switch unit 20 and the memory switch unit 30. Controlled by

Lifting and lowering switch unit 20 is composed of the lifting switch 21 and the lowering switch 22, the lifting switch 21 and the lowering switch 22 is exposed to the outside of the seat back (3) for the passenger to check and operate It is installed so that.

In addition, the memory switch unit 30 is composed of a plurality of memory switches 31, each of the memory switch 31 is numbered so that the user can easily identify during use.

The lift switch unit 20 and the memory switch unit 30 are converted to an electrical signal through an input unit 40 and transmitted to the program control unit 60.

In addition, the motor 5 is provided with a position detection sensor unit 50 for detecting the position of the headrest body 1, the rotation direction and the number of revolutions are controlled in connection with the motor drive control unit 80.

And the program control unit 60 is linked to the position storage unit 70 for storing the position of the headrest body 1 by the operation of the position detection sensor unit 50 and the memory switch unit 30.

The program control unit 60 continues in the direction in which the motor 5 raises and lowers the headrest body 1 while the lifting switch 21 or the down switch 22 of the lifting switch unit 20 is pressed. It is programmed to rotate.

In addition, the program control unit 60 is programmed to store the adjusted position of the headrest in the position storage unit 70 by the operation of the memory switch unit 30, in the present invention of the desired number of the memory switch 31 When the memory switch 31 is pressed for a predetermined time or longer, the position is automatically programmed to be stored in the memory switch 31 of the corresponding number.

The program control unit 60 is a memory switch 31 of the number corresponding to the headrest body 1 by rotating the motor (5) by pressing the memory switch 31 of the number stored in the desired position for a short time or less. It is programmed to move to the position of the headrest body (1) stored in.

That is, the program controller 60 controls the head controlled by the elevating switch unit 20 to the memory switch 31 of the corresponding number when the memory switch 31 of the memory switch unit is pressed for a predetermined time or longer. The position of the rest body 1 is stored in the position storage unit 70, and when the memory switch 31 is shortly pressed for a predetermined time or less, the head rest body with the body of the head rest stored in the memory switch 31 of the corresponding number. The motor drive control unit 80 is controlled to move (1).

On the other hand, the process of adjusting the height of the headrest by the present invention described above is as follows.

When the occupant boards and presses the lifting and lowering switches 21 and 22 of the elevating switch unit 20, the input unit 40 transmits an electric signal to the program controller 60 to control the motor driving controller 80 to control the motor. (5) is rotated in the direction in which the headrest body 1 is raised and lowered, and the headrest body 1 is raised and lowered according to the pushed and lowered switches 21 and 22 that are pressed.

When the headrest body 1 is positioned at the height desired by the occupant, release the hand from the up / down switches 21 and 22 that are held down to fix the position of the headrest body 1, and the fixed position is used as a memory switch unit ( If the memory switch 31 of the desired number is pressed for a predetermined time or longer in 30), the position is stored in the memory switch 31 of the number corresponding to the position storage unit 70.

Then, even if the position of the headrest body 1 is changed when the occupant gets off and boards again, the motor drive control unit 80 operates the motor 5 by briefly pressing the memory switch 31 of the number stored therein. The headrest body 1 is moved to the position stored in the memory switch 31.

Therefore, each time the occupant rides, the height of the headrest can be easily adjusted to his / her own body by pressing the stored memory switch 31 without having to adjust the height of the headrest to his / her own body shape.

On the other hand, as described above, in the state where the occupant presses the up / down switches 21 and 22, the motor 5 continues to rotate to raise and lower the headrest body 1, so that the headrest body ( 1) is equipped with a mechanical stopper at the top and the bottom of the rising and falling position so that further rise and fall can not proceed anymore, if the motor (5) does not move under this force, the motor drive control unit 80 immediately Ignores the key signal from the input unit 40 and stops the driving of the motor 5 so as to prevent the overload of the motor 5 from occurring.

In addition, when the head restraint body 1 is located at the top end, the lower switch 22 recognizes, and in the case where the head restraint body is located at the lower end, the lift switch 21 is recognized to operate the motor 5 to move the head restraint body 1. Let's do it.

Note that the memory switch unit 30 is recognized and operated regardless of the position of the headrest body 1.

In addition, the power control unit 10 is connected to a power confirmation lamp 11 to check the operation state of the ignition key to check whether or not the electric power supply to the power supply control unit 10 is connected to the occupant with this confirmation lamp It is preferable to check whether the headrest height adjusting device can be operated and to operate the elevating switch unit 20 or the memory switch unit 30.

According to the configuration of the present invention described above, the occupant can simply adjust the height of the headrest by manipulating the control means, and the headrest can be positioned at a height suitable for his head height.

In addition, the passenger can store the height of the headrest that fits his body type through the memory switch, so even if the height of the headrest is changed when boarding, simply press the stored memory switch to easily position the height of the headrest to fit the body type. It can be.

Therefore, it is a very useful invention that can increase the convenience of the occupant and significantly increase the merchandise of the vehicle.

Claims (3)

 A guide bar 2 coupled to the upper portion of the seat back 3 so as to be vertically movable, and having a headrest body 1 supporting the occupant's head; In the provided with a height adjusting means for adjusting the vertical height of the headrest (1); The height adjusting means is mounted inside the seatback (3), the motor (5) rotates by receiving electric power by the switch operation, Continuous spiral grooves are dug on the outer circumferential surface, and screw bars 6 mounted on the rotating shaft of the motor 5 so that both ends face the upper and lower portions of the seat back 3 and rotated by the rotation of the motor 5 and , A lifting nut (7) screwed to the screw bar (6) and having a fixture (7a) on both sides of which the guide bar (2) of the headrest body (1) is fixed; Control means 8 for supplying and cutting off the electric power supplied to the motor 5 and controlling the lifting and lowering movement of the headrest body 1 by changing the rotational direction of the motor 5 according to a switch operation. Headrest height adjustment device, characterized in that configured. The method according to claim 1, wherein the control means 8 is a power control unit 10 for controlling the electric power supplied to the motor (5), Lifting and lowering switch unit 20 for forward and reverse rotation of the motor 5 so that the headrest body 1 is raised and lowered, A plurality of memory switch unit 30 to be adjusted by the elevating switch unit 20 to select the height of the stored headrest body (1), An input unit 40 connected to the elevating switch unit 20 and the memory switch unit 30 to convert an input signal of each switch into an electrical signal and to transmit the electrical signal; A position detection sensor unit 50 connected to the motor 5 and detecting a position of the headrest body 1; The electrical signal transmitted from the input unit 40, the position detection sensor unit 50, and the power control unit 10 is connected to the input unit 40, the position detection sensor unit 50, and the power control unit 10, respectively. A program controller 60 for outputting a signal for controlling the motor 5,  A position storage unit 70 connected to the program control unit 60 to store the position of the headrest body 1 by an operation of the memory switch unit 30; Headrest height adjustment device, characterized in that consisting of a motor drive control unit (80) for controlling the driving of the motor (5) in response to the motor control signal in connection with the program control unit (60). The method of claim 2, wherein the program control unit 60 is pressed to the lift switch unit 20 to the memory switch 31 of the corresponding number when the memory switch 31 of the memory switch unit 30 is pressed for a predetermined time or longer. The position of the headrest body 1 adjusted by the stored in the position storage unit 70, and if the memory switch 31 is shortly pressed for a predetermined time or less body of the headrest stored in the memory switch 31 of the corresponding number Headrest height adjustment device characterized in that for controlling the motor drive control unit 80 to move the headrest body (1).

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