JP2006213253A - Headrest device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headrest device for vehicle which can greatly reduce the occurrence of a whiplash or the like by mechanically suppressing the forward movement of the head section of a passenger at the time of a rear-end collision. <P>SOLUTION: This headrest device for vehicle is equipped with a headrest main body 11, a stay 12, and a forehead holder 13. In this case, the headrest main body 11 is formed by covering a core material with a skin 11b. The stay 12 is used for supporting the headrest main body 11 to the upper section of a seat back 1b. The forehead holder 13 is longitudinally turnably provided at the upper section of the headrest main body 11, and can support the forehead section of the head section of the passenger when being turned to the front side. The forehead holder 13 is formed into an approximately U-shape when seen in a plan view, and can be set at a setting position S1 at which the forehead holder 13 is held under a horizontal state on the front side of the headrest main body 11 while being turned to the front side, and a housing position S3 at which the forehead holder 13 is housed in the rear section of the headrest main body 11 while being turned to the rear side. The headrest main body 11 has a stopper 20 which regulates the turning of the forehead holder 13 to the lower side than the setting position S1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a headrest device provided on a seat of a vehicle such as a passenger car.

In general, as shown in FIG. 5, a seat 1 in a passenger car or the like includes a seat cushion 1 a and a seat back 1 b, and a driver or a passenger at the time of a rear-end collision or the like (generically referring to these) The headrest device 2 is attached for the purpose of preventing the occurrence of whiplash of the occupant M). Conventionally, the headrest device 2 includes a headrest body 3 formed of a core material 3a having a low rebound resilience formed so as to cover the frame and a skin 3b such as a cloth covering the surface side of the core material 3a. The upper portion of the headrest body 3 is connected to the frame, and the lower portion is constituted by a pair of stays 4 supported by the upper portion of the seat back 1b. In addition, as this headrest apparatus, it is disclosed by patent document 1, for example.
JP 2001-275781 A

  However, in such a headrest device 2, the headrest body 3 is simply formed in a pillow shape by the core material 3a and the skin 3b and is configured to support the head H of the occupant M. Of the head H of the occupant M immediately after the rear-end collision can be supported by the headrest body 3, but the head H tends to move backward. The headrest device 2 cannot support the forward movement indicated by the arrow B of the head H due to the reaction. Similarly, when the vehicle collides with the vehicle ahead, the headrest device 2 cannot support the forward movement of the head H of the occupant M immediately after the collision.

  That is, in the case of the conventional headrest device 2, among the forces applied in the front-rear direction to the head H of the occupant M during the rear-end collision, the force applied to the rear can be mechanically supported by the headrest body 3, but the force applied to the front is the same. Although it is difficult to support mechanically and the headrest device 2 is mounted as standard equipment on the seat 1 of the vehicle, the occurrence of whiplash of the occupant M due to a rear-end collision of the vehicle is still sufficiently reduced. The fact is not.

  The present invention has been made in view of such circumstances, and the object thereof is to mechanically suppress the forward movement of the passenger's head during a rear-end collision or the like, thereby significantly reducing the occurrence of whiplash and the like. The object is to provide a vehicle headrest device.

  In order to achieve such an object, the invention according to claim 1 of the present invention includes a headrest body formed by covering a core material with a skin, and a stay for supporting the headrest body on an upper portion of a seat back. And a forehead holder provided at the top of the headrest body so as to be pivotable in the front-rear direction and capable of supporting the forehead portion of the occupant's head when pivoted forward.

  The forehead holder is formed in a substantially U shape in plan view as in the invention described in claim 2, and is rotated to the front side and held in a substantially horizontal state at the upper front of the headrest body. It is preferable to be able to set the position and the storage position that is rotated rearward and stored in the rear part of the headrest body. Further, the headrest body preferably has a stopper for restricting the downward rotation of the forehead holder from the set position, as in the invention described in claim 3, and the forehead holder further includes: As described in the invention described above, it is preferable that the seat belt can be set at the set position when the seat belt is worn.

  According to the first aspect of the present invention, the forehead portion of the occupant's head can be supported on the upper portion of the headrest body formed by covering the core with the skin when the headrest is rotated forward. Since the forehead holder is pivotable in the front-rear direction, by turning the forehead holder forward and setting it in place, the forehead part of the occupant is supported by this forehead holder and is subject to impacts such as rear-end collisions. The movement of the head in the front-rear direction can be mechanically suppressed by the headrest body and the forehead holder, and the occurrence of whipping or the like of the occupant can be greatly reduced.

  Further, according to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the forehead holder is formed in a substantially U shape in plan view, and is rotated to the front side so that the upper portion of the headrest main body. The forehead holder in the substantially horizontal state set in the set position can be set to the set position that is held forward in a substantially horizontal state and the storage position that is rotated rearward and stored in the rear part of the headrest body. Thus, the forehead portion of the occupant can be reliably supported at the time of rear-end collision and the like, and can be prevented from being obstructed when the forehead holder is not in use by being rotated backward and stored in the storage position. .

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, since the headrest body has the stopper for restricting the downward rotation from the set position of the forehead holder, Excessive forward rotation of the holder can be reliably controlled, and the forehead portion of the occupant can be more reliably supported by the forehead holder during a rear-end collision.

  Furthermore, according to the invention described in claim 4, in addition to the effect of the invention described in claim 2 or 3, since the forehead holder can be set at the set position when the seat belt is mounted, the seat belt As a result, the forehead part of the occupant holding the body can be more reliably supported by the forehead holder at the time of rear-end collision, etc. Obtainable.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 show an embodiment of a vehicle headrest device according to the present invention, FIG. 1 is a perspective view thereof, FIG. 2 is a side view showing the use state thereof, FIG. 3 is a plan view thereof, and FIG. It is a cross-sectional view of the A part of FIG. In addition, the same code | symbol is attached | subjected and demonstrated to the same site | part as FIG. 5 mentioned above.

  As shown in FIGS. 1 and 2, the headrest device 10 includes a headrest body 11, a pair of stays 12 for supporting the headrest body 11 on the upper portion of the seat back 1 b (see FIG. 2), and the headrest body 11. A forehead holder 13 and the like are provided at the upper portion so as to be rotatable. The headrest body 11 is formed in a pillow shape by a core material 11a made of a pad, beads, or the like having a low rebound resilience, and a skin 11b made of cloth, leather or the like covering the surface of the core material 11a.

  The stay 12 is formed of, for example, an L-shaped metal rod, and an upper portion bent in the lateral direction is fixed to a frame (not shown) provided in the headrest body 11 and a lower portion extending in the vertical direction is formed. A predetermined length protrudes downward from the bottom surface of the headrest body 11 at a predetermined angle. And the lower end part 12a which is the front-end | tip of this stay 12 is each inserted by the height adjustment mechanism 14 embed | buried under the upper part of the seat back 1b. The stay structure is not limited to the use of an L-shaped metal rod, and an appropriate shape or structure corresponding to the frame shape in the headrest body 11 can be adopted.

  The forehead holder 13 includes a substrate 13a made of an iron plate, a resin plate, or the like formed in a U shape in plan view, and an elastic material 13b made of sponge, rubber, or the like disposed so as to cover the surface of the substrate 13a. 3 and 4, both ends of the substrate 13a are rotatably disposed on the headrest body 11 as shown in FIGS. 3 and 4, and between the straight portions 13c on both sides covered with the elastic material 13b. In the plan view, a substantially semicircular arc portion 13d is formed.

  That is, a shaft 15 having screw portions 15a formed at both ends is embedded in a penetrating state in the width direction at the top of the headrest main body 11, and the screw portions 15a of the shaft 15 project from both upper side surfaces of the headrest main body 11. Positioning nuts 16 are respectively fixed to the portions to be performed. Further, holes 17 provided at both ends of the substrate 13a are fitted and inserted into the threaded portions 15a of the shaft 15 projecting outside the positioning nut 16, and an operation knob 19 is provided outside the hole 17 via a washer 18. The screw portions 19a are tightened. Accordingly, both ends of the forehead holder 13 are rotatably attached to the shafts 15 protruding from both upper side surfaces of the headrest body 11 by the operation of the operation knob 19. The length of the straight portion 13c and the shape of the arc portion 13d of the forehead holder 13 are set to one type or a plurality of types according to the standard body shape of the occupant M.

  Further, stoppers 20 made of metal bars are provided on both sides of the upper portion of the headrest body 11 and on the front side of the shaft 15 so as to penetrate the upper portion of the headrest body 11 in the width direction. Both ends of the stopper 20 protrude from the upper side surfaces of the headrest body 11 by a predetermined dimension, and both ends of the substrate 13a of the forehead holder 13 come into contact with the protruding portions from above. At this time, the height position at which the stopper 20 is embedded in the headrest body 11 is set so that the forehead holder 13 is in a substantially horizontal state when both ends of the forehead holder 13 abut from above. Accordingly, the stopper 20 prevents (restricts) the downward rotation of the forehead holder 13. The stopper mechanism of the forehead holder 13 is not limited to this example. For example, the stopper 20 is disposed so that the height can be adjusted by a height adjusting mechanism (not shown), and the position of the forehead holder 13 is determined according to the body shape of the occupant M. It can also be set as the structure which can adjust.

  Next, an example of a method of using the headrest device 10 configured as described above will be described with reference to FIG. First, by setting the operation knob 19 of the headrest device 10 with a predetermined tightening force, the forehead holder 13 having a shape selected in advance according to the body shape of the occupant M is set so as to be rotatable with respect to the headrest body 11. The forehead holder 13 is set to a vertical position S2 indicated by a two-dot chain line in FIG. Further, the height of the headrest device 10 in which the stay 12 is inserted into the height adjustment mechanism 14 of the seat back 1b from above is adjusted according to the seat height of the occupant M, and the headrest main body behind the head H of the occupant M 11 is positioned, and a seat belt (not shown) is worn to hold the body of the occupant M on the seat 1.

  In this state, the occupant M reaches his back to the head H and rotates the forehead holder 13 forward as indicated by an arrow D in FIG. 2 so that both ends of the substrate 13a of the forehead holder 13 abut against the stopper 20. The set position S1 indicated by the solid line in FIG. 2 is set. In this set position S1, the arc portion 13d of the forehead holder 13 is in a state where it is disposed in the forehead portion of the occupant M with a predetermined gap (a gap that does not adversely affect the driving operation of the occupant M). .

  In the event of a rear-end collision from the rear during driving at the set position S1, the headrest body 11 supports the movement of the head H of the occupant M rearward due to the impact immediately after the rear-end collision, Further, the forward movement of the head H due to the reaction of the force of the head H moving backward is caused by the forehead holder 13 set with a predetermined gap in front of the forehead portion of the occupant M. It is supported by the arc portion 13d. That is, of the movement of the head H due to the longitudinal force applied to the occupant M at the time of a rear-end collision, the backward movement is restricted by the headrest body 11, and the forward movement is restricted by the forehead holder 13. Therefore, it is possible to suppress an excessive force in the front-rear direction from acting.

  On the other hand, when the occupant M wants to stop the vehicle after the predetermined operation is finished, for example, to descend from the vehicle, hold the arc portion 13d or the like of the forehead holder 13 with the hand and move the shaft 15 as shown by the arrow C in FIG. It is turned to the center and set to a vertical position S2 indicated by a two-dot chain line. In this vertical position S2, the forehead holder 13 is completely separated from the head H of the occupant M, and for example, the occupant M can get off the seat 1.

  Further, in the case of the headrest device 10 attached to the seat 1 on which the occupant M does not get on, the arc rest portion of the forehead holder 13 is further rotated in the direction of arrow C from the vertical position S2 in FIG. 13d is positioned on the upper back side of the seat back 1b and set to the storage position S3. Thus, the forehead holder 13 is stored (stored) on the back side of the seat back 1b, and the forehead holder 13 prevents, for example, obstruction of the view of the occupant M riding on the rear seat 1, etc. The seat 1 can be used with the same feeling as the conventional headrest device 2 to which the forehead holder 13 is not attached.

  In the above description, an example is described in which the occupant M performs a setting operation of the rotatable forehead holder 13 of the headrest device 10 at the set position S1 after the occupant M wears the seat belt. The forehead holder 13 is rotated by a driving source such as a motor, and the driving source is rotated only when seat belt attachment is detected, or the forehead holder 13 is prevented from rotating. Alternatively, an appropriate mechanism is provided that allows the forehead holder 13 to be mechanically disabled unless the seat belt is worn, such as allowing the mechanism only when seat belt wearing is detected. It can also be adopted.

  Thus, in the headrest device 10 of the above-described embodiment, a plane that can support the forehead portion of the head H of the occupant M when the headrest body 10 of the headrest device 10 is rotated forward. Since the U-shaped forehead holder 13 is provided so as to be pivotable in the front-rear direction, the forehead portion of the occupant M is set by the forehead holder 13 by turning the forehead holder 13 forward and setting the set position S1. Can be held securely and safely, and the headrest body 11 and the forehead holder 13 can mechanically suppress the movement of the head H in the front-rear direction due to an impact during a rear-end collision or the like.

  In particular, since the headrest body 11 has a stopper 20 that restricts the downward rotation of the forehead holder 13 from the set position S1, the forward movement of the forehead holder 13 or the downward movement of the forehead holder 13 with this stopper 20 is performed. The movement is restricted, and the forehead portion of the occupant M can be more reliably held by the forehead holder 13 at the time of rear-end collision. As a result, even if a rear-end collision or the like occurs, the occurrence of whipping or the like of the occupant M can be greatly reduced.

  In addition, the forehead holder 13 is rotated forward and is held in a substantially horizontal state in front of the upper portion of the headrest body 11, and is stored rearwardly and stored in the rear part of the headrest body 11. Since it can be set to the position S3, the forehead portion of the occupant M can be securely held by the substantially horizontal forehead holder 13 set at the set position S1, and is also rotated rearward and stored in the storage position S3. This prevents the forehead holder 13 from being in the way of the occupant M, such as being able to use the headrest device 10 in the same manner as in the past.

  Further, since the forehead holder 13 is set at the set position S1 when the seat belt is worn, the forehead portion of the occupant M holding the body by the seat belt can be more reliably supported by the forehead holder 13. At the same time, the forehead portion of the occupant M can be securely held by the arc portion 13d covered with the elastic material 13b, and the headrest device 10 excellent in safety and usability can be provided. In addition, since the forehead holder 13 is disposed on the upper portion of the headrest main body 11 and the stopper 20 prevents rotation from the set position S1 to the lower front side, the forehead holder 13 is lowered from a substantially horizontal position during operation. This prevents the occupant M from being obstructed from rotating and prevents the vehicle from being adversely affected.

  In addition, since the forehead holder 13 is attached to the shaft 15 penetrating the upper portion of the headrest body 11 that can be attached to and detached from the seat back 1b by the operation knob 19 or the like, for example, various headrest devices 10 having the forehead holder 13 are used. It can be easily retrofitted (retrofitted) to the seat 1 of the vehicle, and can be handled accurately and easily by replacing the conventional headrest device already mounted on the vehicle in use, for example, with the headrest device 11 of the present invention. it can. In addition, by mounting a forehead holder 13 corresponding to the body shape of the occupant M in advance, the forehead holder 13 that matches the body shape of the occupant M can be used. From these, it is further excellent in versatility and convenience. The headrest device 10 can be provided.

  In the above embodiment, the headrest device 10 is used with the predetermined forehead holder 13 mounted in advance. However, the present invention is not limited to this. For example, a plurality of types of forehead holders 13 are provided in one headrest device 10. It can also be configured to be prepared and used selectively. Moreover, in the said embodiment, although the shape of the forehead holder 13 was fixed, for example, the linear part 13c is comprised so that expansion and contraction is possible, and the structure which can be applied to the occupant M of various body shapes with one forehead holder 13 It can also be.

  Furthermore, the headrest device 10 according to the present invention can be applied not only to the driver's seat 1 but also to various headrest devices detachably disposed on the passenger seat or the rear seat. Possible vehicles are not limited to passenger cars, and can be applied to various vehicles such as trucks and buses. Further, the shape of the forehead holder 13, the turning mechanism of the forehead holder 13, the shape and form of the headrest main body 11 and the stay 12, etc. in the above embodiment are also examples, and within the scope not departing from the gist of each invention according to the present invention. It can be changed as appropriate.

  The present invention is not limited to a headrest device that is formed separately from the seatback and is detachably provided on the upper portion of the seatback, and can also be applied to a headrest device that is provided integrally with the seatback.

The perspective view of the headrest device for vehicles concerning the present invention. Side view showing the state of use The plan view Cross-sectional view of part A in Fig. 3 Illustration of a general vehicle seat

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Seat 1a ... Seat cushion 1b ... Seat back 10 ... Headrest device 11 ... Headrest main body 11a ... Core material 11b ... Skin 12 ... · Stay 13 ··· Forehead holder 13a ··· Board 13b ··· Elastic material 13c ··· Linear portion 13d ··· Arc portion 14 ··· Height adjustment mechanism 15 ··· Shaft 15a ··· · Screw part 16 ··· Positioning nut 19 ··· Operation knob 19a · · · Screw part 20 · · · Stopper S1 · · · Set position S3 · · · Storage position M · · · Crew H ... Head

Claims (4)

  A headrest body formed by covering the core material with a skin, a stay for supporting the headrest body on the upper portion of the seat back, and provided on the upper portion of the headrest body so as to be pivotable in the front-rear direction. A vehicle headrest device comprising: a forehead holder that can support a forehead portion of an occupant's head when rotated.   The forehead holder is formed in a substantially U shape in plan view, and is rotated to the front side to be held in a substantially horizontal state in front of the upper portion of the headrest body, and is rotated to the rear side to The vehicle headrest device according to claim 1, wherein the vehicle headrest device can be set to a storage position stored in a rear portion.   The vehicle headrest device according to claim 2, wherein the headrest body has a stopper that restricts rotation of the forehead holder below the set position.   4. The vehicle headrest device according to claim 2, wherein the forehead holder can be set at the set position when a seat belt is attached. 5.

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