KR101071285B1 - Headrest for vehicle having multi function - Google Patents

Abstract

According to the present invention, the headrest is moved up, down, left and right or rotated in the left and right directions according to the physical condition and necessity of the occupant, thereby improving convenience in using the head restraint. The present invention, while being installed on the upper back of the seat, the headrest is equipped with an airbag assay and a pole installed in the lower portion; A hollow center housing rotatably coupled to the lower portion of the pawl; A swing actuator fixedly installed at one side of the center housing to provide forward and reverse rotational force with respect to the pole; An X-axis rail slidably coupled to the lower center housing; A shift actuator fixedly installed at the other side of the X-axis rail and providing a left-right moving force with respect to a center housing; A Y-axis rail fixed to a backrest while slidingly coupled to the rear end of the shift actuator; And an up-down actuator installed on the bottom of the X-axis rail and fixed to the backrest while providing a lifting force to the center housing.

Headrest, airbag, inflator, pole, backrest

Description

HEADEST FOR VEHICLE HAVING MULTI FUNCTION}

The present invention relates to a headrest for a vehicle having a complex function, and in particular, provides a headrest having a structure capable of moving up, down, left, and right or rotating in a left and right direction according to a physical condition or necessity of a passenger. Accordingly, the present invention significantly improves the convenience in the use of the headrest, and also to be wrapped around the neck of the passenger while inflating the tube of the airbag assay installed in the headrest in the shape of "C" in the event of a collision Thereby, the present invention relates to a vehicle headrest having a combined function which further improves the safety of the occupant.

In general, the headrest is installed on the upper back of the seat, and is mainly used for the purpose of allowing the head of the passenger to rest comfortably. Recently, in order to use the headrest more conveniently, various operation devices have been added to the headrest.

Meanwhile, referring to FIG. 1A, a conventional airbag device for a vehicle headrest is provided with a driving means 11 in which a pinion gear 10 is coupled to one side of a backrest 2 constituting a seat 1. The rack gear 20 formed on the notch rod 21 is gearably coupled to the pinion gear 10, and the headrest 3 is coupled to the upper portion of the notch rod 21.

Rotating the driving means 11 configured as described above moves the rack gear 20 to which the pinion gear 10 is geared to raise or lower the notch rod 21.

Therefore, the headrest 3 installed on the notch rod 21 is raised and lowered at the upper end of the backrest 2.

The prior art as described above is inconvenient in use because the occupant has to elevate the headrest 3 directly through the drive means (11).

In addition, referring to FIG. 1B, another conventional technology of the "airbag device for a vehicle headrest" will be described. First, the airbag module 10 for the headrest is mounted on the headrest 4 located at the top of the seat 3. Is installed while being connected, and the control module 20 is connected to the shock detection unit 30 installed in the vehicle body.

When the vehicle collides while driving, the impact detection unit 30 transmits information to the control module 20, and the control module 20 transmits an operation command to the headrest airbag module 10 to provide a headrest airbag ( 12) is developed.

Thus, the occupant is secured from injury by the head restraint airbag 12.

The prior art as described above is somewhat safe when the front of the vehicle crashes, but there is a problem that the safety is significantly reduced when the side collision occurs.

The present invention considers the above problems, and implements a structure that can move the headrest up, down, left and right or rotate in the left and right directions according to the physical condition or needs of the occupant, thereby improving the convenience in using the headrest The purpose is to.

In addition, the present invention has an object to further improve the safety of the occupant by being wrapped around the neck of the occupant while the tube of the airbag assay installed in the headrest is inflated in the shape of "C" in the event of a collision.

Headrest assembly having a composite function according to the present invention, while being installed on the upper back of the seat, the headrest is equipped with an airbag assay and a pole in the lower portion; A hollow center housing rotatably coupled to the lower portion of the pawl; A swing actuator fixedly installed at one side of the center housing to provide forward and reverse rotational force with respect to the pole; An X-axis rail slidably coupled to the lower center housing; A shift actuator fixedly installed at the other side of the X-axis rail and providing a left-right moving force with respect to a center housing; A Y-axis rail fixed to a backrest while slidingly coupled to the rear end of the shift actuator; And an up-down actuator installed on the back of the X-axis rail while being fixed to the backrest while providing a lifting force to the center housing.

In addition, the swing actuator, the shift actuator, and the up-down actuator ê 각 angles, the motor coupled to the worm worm 축 on the shaft; Pinions geared to the worm gear; A rack geared to the pinion; And a housing for installing the motor and pinion therein while engaging the front side of the rack to protrude outward and forward.

An extension rack having a rack formed on a surface of the rack at a 90 ° direction is formed at the rack front end of the swing actuator, and the extension rack is gear-coupled with a pinion installed on the pole.

The rack front end of the shift actuator is fixedly installed on the side wall of the center housing, and the rack front end of the up-down actuator is fixedly installed on the X-axis rail.

The airbag assay may include a head housing installed inside the headrest and having a cut line and a hinge line formed at both sides thereof, and a pole installed at a lower portion thereof. An inflator installed in the middle of the head housing; And tubes respectively installed on both sides of the inflator.

Each tube is inflated to both sides of the head housing at the same time by gas from the inflator, and each tube forms a "C" shape as it exits and is inflated so that the neck of the occupant is moved by the tube. Wrapped

A control unit including an operation unit is connected to the swing actuator, the shift actuator, the up-down actuator, and the airbag assay, and the control unit is connected to an impact sensor installed in the vehicle body.

The control unit transmits a command through the control unit to rotate the headrest in the forward and reverse directions through the swing actuator, and moves the headrest left and right through the shift actuator, and the headrest up and down through the up-down actuator. Elevate.

According to the present invention, since the headrest can be moved up, down, left and right or rotated in the left and right directions according to the physical condition and necessity of the occupant, there is an effect of improving convenience in using the headrest.

In addition, according to the present invention, the tube of the airbag assay installed in the headrest is wrapped around the neck of the occupant while being inflated in the shape of the "C" when the collision can further improve the safety of the occupant.

BRIEF DESCRIPTION OF THE DRAWINGS The above objects, features and advantages will become more apparent through the following examples in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Looking at an embodiment of the present invention with reference to Figures 2 to 5, in the case of the seat (2) installed in the vehicle interior is usually divided into a general cushion and backrest (4), the upper end of the backrest (4) A headrest 6 is installed to lean the head of the occupant.

In the case of the backrest (4) is to adjust the inclination angle so that the occupant can maintain a comfortable posture, the headrest (6) while being able to move up, down, left, right according to the passenger's convenience It can be rotated forward and reverse.

The headrest 6 installed as described above is provided with an airbag assay 8 for the safety of the occupant, and the airbag assay 8 has a cover 14 formed with a cutout line 10 and a hinge line 12. The head housing 16 is provided on both sides, and a general inflator 18 filled with nitrogen gas is installed in the middle of the head housing 16, and a tube is provided on both sides of the inflator 18. 20 are stacked and placed inside the cover 14 while being positioned.

A pole 22 is vertically welded in the lower middle of the head housing 16, and a lower portion of the pole 22 is rotatably coupled to the hollow center housing 24. (24) On one side, a swing actuator 26 for providing forward and reverse rotational force with respect to the pole 22 is fixedly installed.

The swing actuator 26 installed as described above includes a motor 30 coupling the worm gear 28 to the shaft, a pinion 32 geared to the worm gear 28, and a rack geared to the pinion 32. 34) and the housing 36 for installing the motor 30 and the pinion 32 therein while engaging the front side of the rack 34 to protrude forward and backward.

At this time, an extension rack 37 twisted at an angle of 90 ° is formed at the tip of the rack 34 (that is, an extension rack 37 formed with a rack at a surface 90 ° in the direction of the rack is formed at the tip of the rack 34). ), The extension rack 37 is installed in the pawl 22 while the pinion 38 is gear-coupled, wherein the extension rack 37 and the pinion 38 are located inside the center housing 24.

A slider 40 is fixedly installed on the bottom of the center housing 24, and an X-axis rail 42 serving as a guide while slidingly engaging the slider 40 is positioned below the center housing 24.

On the other side of the X-axis rail 42, a shift actuator 44 for providing a left and right movement force with respect to the center housing 24 is fixedly installed. The shift actuator 44 has a worm gear 46 on the shaft. ) Coupled to the motor 48, the pinion (50) geared to the worm gear 46, the rack 52 geared to the pinion (50), the front of the rack 52 protrudes outward It consists of a housing 54 for installing the motor 48 and the pinion 50 therein while being coupled to each other.

At this time, the front end of the rack 52 is welded to the side wall of the center housing 24 and fixed.

A slider 56 is fixedly installed at the rear of the housing 54 of the shift actuator 44, and a Y-axis rail 58, which serves as a guide while slidingly engaging the slider 56, is located at the rear of the housing 54. It is welded and fixed to (4).

An up / down actuator 60 is provided below the X-axis rail 42 to provide a lifting force with respect to the center housing 24. The up-down actuator 60 has a worm gear 62 coupled to the shaft. While the motor 64, the pinion 66 geared to the worm gear 62, the rack 68 geared to the pinion 66, the front side of the rack 68 is projected to the outside and coupled forward and backward It consists of a housing 70 for installing the motor 64 and the pinion 66 therein.

At this time, the front end of the rack 68 is welded and fixed to the X-axis rail 42, the housing 70 is welded and fixed to the backrest (4).

On the other hand, the motor 30 of the swing actuator 26, the motor 48 of the shift actuator 44, the motor 64 of the up-down actuator 60, and the inflator 18 of the airbag assay 8 are installed as described above. ), A control unit 74 including an operation unit 72 is connected, and the control unit 74 is connected to the impact sensor 76 installed in the vehicle body.

At this time, it is preferable that the operation unit is located close to the seat 2 so that the occupant can conveniently use it, and in some cases, may be installed in the driver's seat.

Referring to the operation of the present invention configured as described above are as follows.

First, when the occupant gets into the vehicle and sits on the seat 2, the angle of the backrest 4 is appropriately adjusted. Then, the height of the headrest 6 is adjusted through the operation unit 72 according to the physical condition of the occupant. Will be adjusted.

When the rising mode, not shown, is selected in the operation unit 72, the control unit 74 transmits an operation command to the motor 64 of the up-down actuator 60, and the power of the motor 64 is a worm gear 62, The pinion 66 is delivered in the order of the rack 68, and the rack 68 raises the X-axis rail 42 by the transmitted power.

As described above, when the X-axis rail 42 rises, the housing 54 of the shift actuator 44 fixedly fixed to the other side rises along the Y-axis rail 58, and at the same time, the center located above the X-axis rail 42. The housing 24 and the swing actuator 26 are raised, which causes the headrest 6 coupling the pole 22 to the center housing 24 to protrude upward from the backrest 4.

When the headrest 6 is raised to an appropriate height through the operation unit 72 and the operation is stopped, unlike the above, when the lowering mode is selected in the operation unit 72 to lower the headrest 6, the up-down The motor 64 of the actuator 60 rotates the worm gear 62 in the reverse direction to lower the swing actuator 26, the center housing 24, the shift actuator 44, and the like, which causes the center housing 24 to be lowered. The headrest 6, which is coupled to the pole 22, is lowered together.

Unlike the above, if the right mode not shown in the control unit 72 is selected to move the headrest 6 to the left or right as needed, the control unit 74 commands an operation of the motor 48 of the shift actuator 44. The power of the motor 48 is transmitted in the order of the worm gear 46, the pinion 50, the rack 52, and the rack 52 moves the center housing 24 by the transmitted power. It will be pushed to the right.

Thus, the center housing 24 moves together with the swing actuator 26 in the right direction on the X-axis rail 42.

At this time, the up-down actuator 60 is in a fixed position, and the headrest 6 is moved in the right direction because the pawl 22 is coupled to the center housing 24.

After the headrest 6 is properly moved to the right through the operation unit 72, the operation is stopped. Unlike the above, the headrest 6 is moved to the left and the left mode is selected by the control unit 72. In this case, the motor 48 of the shift actuator 44 rotates the worm gear 46 in the reverse direction to move the center housing 24, the swing actuator 26, and the like to the left, thereby causing the center housing 24 to move to the left. The headrests 6 which engage the pawls 22 are moved to the left together.

In addition, in the case where the occupant is lying in a more convenient position and wants to maintain a state in which the oblique head is turned, when the right swing mode not shown in the operation unit 72 is selected, the control unit 74 may swing the actuator 26. The operation command is transmitted to the motor 30 of), and the power of the motor 30 is transmitted in the order of the worm gear 28, the pinion 32, the rack 34, and the rack 34 is transmitted. The power-driven extension rack 37 is advanced to rotate the toothed pinion 38 together with the pawl 22.

Thus, the pawl 22 rotates the headrest 6 installed on the upper side in the right direction.

After the headrest 6 is properly rotated to the right through the operation unit 72, the operation is stopped, and, unlike the above, the left swing mode is selected at the operation unit 72 to rotate the headrest 6 to the left. In this case, the motor 30 of the swing actuator 26 rotates the worm gear 28 in the reverse direction to rotate the headrest 6 to the left.

On the other hand, if a collision occurs on the front and rear or side surface in the course of driving the vehicle, the impact sensor 76 transmits the information of the collision state to the control unit 74, the control unit 74 is an airbag assay (8) Command is transmitted to the inflator 18 that constitutes.

Therefore, the tubes 20 located on both sides of the head housing 16 are inflated by nitrogen gas generated from the inflator 18 as shown in FIG. 6B in a state of being superimposed as shown in FIG. 6A. The cover 16 is simultaneously separated from the inside of the housing 16, wherein the cover 14 is rotated about the hinge line 12 as the tear line 10 is split by the inflated tube 20, and the head housing 16 is rotated. Will open the entrance.

Since the tube 20 is continuously inflated to form a "C" shape as shown in Figure 6c, this ensures that the tube 20 is wrapped around the neck of the occupant safely from injury do.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Will be clear to those who have knowledge of.

Figure 1a is a state diagram showing the height adjustment device of the headrest according to the prior art.

Figure 1b is a state diagram showing the installation of the airbag for the headrest according to the prior art.

2 is a state in which the headrest assembly according to an embodiment of the present invention is installed on the backrest.

3 is a state diagram in which a functional device of a headrest assembly according to an embodiment of the present invention is installed.

4 is a schematic circuit diagram of a headrest assembly according to an embodiment of the present invention.

5 is a state diagram showing a tube of the airbag assay according to an embodiment of the present invention.

6A to 6C are diagrams illustrating an operating state of an airbag assay according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

2: sheet 4: backrest

6: headrest 8: airbag assay

10: perforated line 12: hinge line

14: cover 16: head housing

18: Inflator 20: Tube

22: Paul 24: Center Housing

26: Swing Actuator 28, 46, 62: Worm Gear

30,48,64: Motor 32,38,50,66: Pinion

34,52,68: racks 36,54,70: housing

37: extension rack 40, 56: slider

42: X-axis rail 44: shift actuator

58: Y-axis rail 60: up-down actuator

72: operation unit 74: control unit

76: shock sensor

Claims (9)

A headrest installed on an upper part of the backrest provided in the seat and provided with a downwardly extending pole; A center housing having a lower portion of the pawl rotatably coupled thereto; A swing actuator having a motor fixed to the center housing and a power transmission means connected between the output shaft of the motor and the pole to rotate the pole according to the driving of the motor; An X-axis rail supporting the center housing in a lateral direction with respect to the backrest; A power transmission means connected to the X-axis rail and integrally movable and connected between the motor and the output shaft of the motor and the center housing to move the center housing along the X-axis rail according to the driving of the motor. A shift actuator provided; A Y-axis rail supporting the shift actuator in a vertical direction with respect to the backrest; And Is installed in the lower portion of the X-axis rail, and is provided between the motor and the output shaft of the motor and the X-axis rail having a power transmission means for moving the X-axis rail along the Y-axis rail according to the driving of the motor. With up-down actuator Headrest assembly with multiple functions. The method of claim 1, The power transmission means provided in the swing actuator, the shift actuator, and the up-down actuator are respectively A worm gear mounted to the output shaft of the motor; A pinion coupled to the worm gear; A rack linearly reciprocating with the pinion; And A portion of the rack is inserted therein to allow linear reciprocation and includes a housing in which the motor and pinion are installed therein. Headrest assembly with multiple functions. The method of claim 2, An extension rack is provided at a rack front end of the swing actuator, and the extension rack is engaged with a pinion provided at the pole. Headrest assembly with multiple functions. The method of claim 2, Rack front end of the shift actuator, characterized in that installed on the side wall of the center housing Headrest assembly with multiple functions. The method of claim 2, Rack end of the up-down actuator is characterized in that installed on the X-axis rail Headrest assembly with multiple functions. The method of claim 1, An air bag assay is attached to the headrest, The airbag assay A head housing installed inside the headrest, having a cover having a perforated line and a hinge line at both sides thereof, and having a pole coupled to a lower portion thereof; An inflator installed in the head housing; And A tube which is installed on each of the left and right sides of the inflator and inflated by a gas supplied from the inflator Headrest assembly with multiple functions. The method of claim 6, Each tube is simultaneously inflated to both sides of the head housing by the gas generated from the inflator, each tube is formed to form a "C" shape when it is withdrawn from the head housing to expand to surround the neck of the occupant By Headrest assembly with multiple functions. The method of claim 6, The swing actuator, the shift actuator, the up-down actuator, and a control unit having an operation unit is connected to the airbag assay, characterized in that the impact sensor is connected to the control unit Headrest assembly with multiple functions. The method of claim 8, The control unit, It is to transmit the command through the operation unit to rotate the headrest in the forward and reverse direction through the swing actuator, to move the headrest to the left and right through the shift actuator, and to elevate the headrest up and down through the up-down actuator Characterized Headrest assembly with multiple functions.

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