JPH10138811A - Headrest device for vehicle - Google Patents

Headrest device for vehicle

Info

Publication number
JPH10138811A
JPH10138811A JP8296736A JP29673696A JPH10138811A JP H10138811 A JPH10138811 A JP H10138811A JP 8296736 A JP8296736 A JP 8296736A JP 29673696 A JP29673696 A JP 29673696A JP H10138811 A JPH10138811 A JP H10138811A
Authority
JP
Japan
Prior art keywords
headrest
link
frame
front
provided
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8296736A
Other languages
Japanese (ja)
Inventor
Zenzo Fujita
Akihiko Mizuno
Nobuhisa Nakagaki
Kenji Ogawa
宜久 中垣
健次 小川
明彦 水野
善三 藤田
Original Assignee
Nhk Spring Co Ltd
Takashimaya Nippatsu Kogyo Kk
Toyota Motor Corp
トヨタ自動車株式会社
日本発条株式会社
高島屋日発工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nhk Spring Co Ltd, Takashimaya Nippatsu Kogyo Kk, Toyota Motor Corp, トヨタ自動車株式会社, 日本発条株式会社, 高島屋日発工業株式会社 filed Critical Nhk Spring Co Ltd
Priority to JP8296736A priority Critical patent/JPH10138811A/en
Publication of JPH10138811A publication Critical patent/JPH10138811A/en
Pending legal-status Critical Current

Links

Abstract

(57) [Problem] To provide a headrest device having a high ability to support the head of an occupant in a rear collision or the like. A quadrilateral link mechanism (30) is provided on a side frame portion (25) of a backrest frame (20). The link mechanism 30 includes an upper link 33 and a lower link 34 pivotally connected to the side frame portion 25 by shafts 31 and 32 so as to be rotatable in the front-rear direction, and a vertical link 35. A headrest frame 45 is provided on the vertical link 35. The headrest frame 45 can move integrally with the vertical link 35 from the first position to the front second position. A headrest mounting holder 50 is provided on the headrest frame 45. A back member 57 movable in the front-rear direction is provided between the pair of left and right side frame portions 25. The back member 57 is connected to the arm 42 extending below the lower link 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest device mounted on a vehicle seat such as an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 4, an example of an automobile seat includes a seat portion (seat cushion) 10 and a backrest (seat back) 11, and a headrest 12 is provided at an upper end of the backrest 11. The seat 10 is fixed to the floor 13 of the vehicle body via a seat adjuster mechanism (not shown). The headrest 12 is effective in supporting the head of the occupant M when a rear-end collision occurs with a following vehicle. However, at the time of a rear collision, the body of the occupant M is relatively pressed against the backrest 11 as shown by the arrow R1 as the seat 10 is pushed out in the direction of the arrow F, and the head of the occupant M is moved in the direction of the headrest 12. To fall.

[0003]

At the time of the rear collision as described above, the seat 10 is pushed out in the direction of arrow F,
The upper end of the backrest 11 and the upper body of the occupant M tend to fall rearward (in the direction of the arrow R2). In that case, the headrest 12 also moves rearward, so the occupant M
There was room for improvement in fully supporting the head. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vehicle headrest device having a high ability to support the head of an occupant in a rear collision or the like.

[0004]

In order to achieve the above object, a headrest device according to the present invention comprises an upper link and a lower link pivotally attached to a pair of left and right side frame portions of a backrest frame so as to be rotatable in the front-rear direction. A quadrilateral link mechanism including a vertical link connecting the two links, and connected to the vertical link of the quadrilateral link mechanism so as to be integrally movable with the vertical link from a rear first position to a front second position; A driver having a headrest frame having a holder for mounting a headrest, and a back member provided between the pair of left and right side frame portions so as to be movable in the front-rear direction and connected to an arm portion extending below the lower link. Is provided.

[0005] When the vehicle equipped with the headrest device of the present invention is hit rearward, when the body of the occupant moves rearward relative to the seat, the back member of the driver inside the backrest is pushed by the body of the occupant. Then, the arm part rotates backward. As a result, the lower link and the upper link rotate forward via the vertical link, and the headrest frame is driven forward in the direction of the second position, whereby the headrest approaches the occupant's head. For this reason, the support capacity of the headrest is more fully exhibited.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1 and the like, a headrest device 21 is provided on a backrest frame 20 of an automobile seat. The backrest frame 20 is provided inside the backrest 11 similarly to the seat shown in FIG. The backrest frame 20 (only a part of which is shown) may be a metal plate or a metal pipe formed in a predetermined shape in the same manner as in the related art, and a pair of left and right side frame portions 25 and an upper end of each side frame portion 25 are connected. A horizontal upper frame 26 and the like are provided.

A pair of left and right side frame portions 25 is provided with a quadrilateral link mechanism 30, respectively. The link mechanism 30 includes an upper link 33 pivotally attached to a first shaft 31 and a second shaft 32 in a horizontal direction so as to be rotatable in the front-rear direction.
And a lower link 34 and a vertical link 35 connecting these two links 33, 34. The upper link 33 and the lower link 34 extend obliquely rearward and upward as shown in FIG. The vertical link 35 is rotatably connected to the upper link 33 and the lower link 34 by horizontal connecting shafts 40 and 41. The vertical link 35 is moved from the rearward first position shown in FIG. ) Can be moved over the second position closer to the front.

In this embodiment, the length of the upper link 33 (the distance between the axes 31 and 40) and the length of the lower link 34 (the distance between the axes 32 and 41) are equal to each other. Also,
Length of vertical link 35 (distance between axes 40 and 41) and axis 3
The distance between 1 and 32 is also equal to each other. Therefore, the link mechanism 30 of this embodiment substantially constitutes a parallelogram link. An arm portion 42 is formed below the second shaft 32 by extending a part of the lower link 34 downward.

A headrest frame 45 is provided between upper ends of a pair of left and right vertical links 35,35. The headrest frame 45 is located near the upper frame portion 26 and extends horizontally along the upper frame portion 26. The headrest frame 45 is made of a metal material such as a metal pipe, and both ends of the headrest frame 45 are fixed to the vertical link 35 by welding or the like. Therefore, the headrest frame 45 is integrated with the vertical link 35 from the rear first position shown in FIG.
It is possible to move over the front second position shown in FIG.

A headrest frame 45 is provided with a pair of left and right holders 50 for mounting the headrest. The pair of left and right holders 50 in the illustrated example are each formed by fixing a cylindrical metal material to the headrest frame 45 by welding or the like, and the holders 50 are arranged on the headrest frame 45 at a predetermined pitch.

The holder 50 has a through hole 51 extending in the vertical direction.
And the headrest stay 52 can be locked at a desired height by a locking mechanism (not shown). A headrest 12 including a pad, a frame, and the like is provided on an upper end side of the headrest stay 52.

The arm 4 of the pair of left and right link mechanisms 30
A driving body 55 is bridged between the members 2 and 42. Driver 55
Has a rod 56 extending in the width direction of the seat, and a plate-shaped rear member 57 provided at the center of the rod 56. Both ends of the rod 56 are fixed to lower ends of the arm portions 42, 42.

The back member 57 is positioned movably in the front-rear direction inside the pad of the backrest, that is, behind the seated person between the pair of left and right side frame portions 25, 25,
When the occupant seated in the seat is in a normal sitting position, the back member 57 is not pushed backward, and when a load is applied that pushes the seat abruptly forward as in the case of a rear collision, the occupant does not move. The back member 57 is pushed by the body and is displaced rearward. Both ends of the rod 56 are inserted into arc-shaped long holes 60 formed in the side frame portion 25.

The length of the arm portion 42 is greater than the length of the lower link 34, so that the load in the X direction input to the back member 57 can be increased to push up the vertical link 35 side. . Lower link 34 and side frame 2
5 is provided with an urging member 61 such as a tension spring. The urging member 61 urges the rear member 57 in a direction in which the rear member 57 is pushed forward.

Next, the operation of the headrest device 21 having the above configuration will be described. When the vehicle is hit back, the occupant's body is relatively pressed against the backrest. Therefore, when the back member 57 is pushed in the X direction by the occupant's body, the arm portion 42 and the lower link 34 rotate counterclockwise about the second shaft 32 in FIG. The upper link 33 via the first shaft 3
Rotate counterclockwise around 1. For this reason, FIG.
As shown in (2), the headrest frame 45 moves in the direction of the second position, and the headrest 12 advances in the direction approaching the occupant's head. In this embodiment, the headrest frame 45 is provided on the vertical link 35 of the parallelogram link mechanism 30, so that the headrest 12
Is moved from the first position to the second position, the posture of the headrest 12 is kept substantially constant.

The reaction force (operating load) with respect to the load in the X direction input to the back member 57 can be adjusted according to the spring constant of the biasing member 61 and the like. On the other hand, the force pushing the headrest frame 45 forward (head holding load)
It can be variably set according to the ratio of the length of the arm portion 42 to the length of the arm portion. The above-described head holding load is preferably set to be about two to three times the load in the X direction input to the back member 57.

[0017]

According to the present invention, the headrest can be automatically moved forward by utilizing the movement of the occupant when the occupant relatively moves rearward in a rear collision or the like.
The headrest of the occupant can be more reliably supported by the headrest. The head holding load and the moving direction of the headrest frame can be easily adjusted by appropriately selecting the distance between the axes of the links constituting the quadrilateral link mechanism, and the number of parts is small and the configuration is simple. .

Since the quadrilateral link mechanism is provided with the headrest frame, the headrest can be moved substantially in parallel in the front-rear direction, and when the headrest moves from the first position to the second position, the posture of the headrest is substantially constant. It is also possible to keep it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a headrest device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a part of the headrest device shown in FIG. 1;

FIG. 3 is a side view showing a part of the headrest device shown in FIG. 1;

FIG. 4 is a side view showing a seat and an occupant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Seat part 11 ... Backrest 12 ... Headrest 20 ... Backrest frame 21 ... Headrest device 25 ... Side frame part 30 ... Quadrilateral link mechanism 31, 32 ... Shaft 33 ... Upper link 34 ... Lower link 35 ... Vertical link 42 ... Arm part 45 ... Headrest frame 50 ... Headrest mounting holder 52 ... Headrest stay 55 ... Driver 57 ... Back member

Continued on the front page (72) Inventor Zenzo Fujita 3-1-1, Sumiyoshi-cho, Anjo-shi, Aichi-ken Akihiko Mizuno 5-86, Higashiumetsubo-cho, Toyota City, Aichi Prefecture Japan

Claims (1)

[Claims]
1. A quadrilateral link mechanism including an upper link and a lower link pivotally attached to a pair of left and right side frame portions of a backrest frame in a front-rear direction and a vertical link connecting these two links, and the quadrilateral. A headrest frame coupled to the vertical link of the link mechanism and movable integrally with the vertical link from a rearward first position to a frontward second position and having a headrest mounting holder; And a driver having a rear member connected to an arm extending below the lower link, the driver being provided movably in the front-rear direction between the parts, a headrest device for a vehicle.
JP8296736A 1996-11-08 1996-11-08 Headrest device for vehicle Pending JPH10138811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8296736A JPH10138811A (en) 1996-11-08 1996-11-08 Headrest device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8296736A JPH10138811A (en) 1996-11-08 1996-11-08 Headrest device for vehicle

Publications (1)

Publication Number Publication Date
JPH10138811A true JPH10138811A (en) 1998-05-26

Family

ID=17837442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8296736A Pending JPH10138811A (en) 1996-11-08 1996-11-08 Headrest device for vehicle

Country Status (1)

Country Link
JP (1) JPH10138811A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2846921A1 (en) 2002-11-08 2004-05-14 Faurecia Sieges Automobile Vehicle seat, has moving object with mechanism of superior activations actuated by occupant back when vehicle undergoes tending preset shock to project occupant towards back compared to seat
WO2006070650A1 (en) * 2004-12-27 2006-07-06 Ts Tech Co., Ltd. Active headrest mechanism for vehicle seat
JP2006273234A (en) * 2005-03-30 2006-10-12 T S Tec Kk Seat for vehicle
JP2006273235A (en) * 2005-03-30 2006-10-12 T S Tec Kk Seat for vehicle
JP2006347436A (en) * 2005-06-17 2006-12-28 T S Tec Kk Vehicle seat
WO2007007850A1 (en) * 2005-07-13 2007-01-18 Ts Tech Co., Ltd. Vehicle seat and vehicle seat assembling method
JP2007083937A (en) * 2005-09-26 2007-04-05 Nihon Technica Co Ltd Active headrest
JP2007186102A (en) * 2006-01-13 2007-07-26 Lear Corp Vehicle seat assembly provided with active headrest system
JP2007186101A (en) * 2006-01-13 2007-07-26 Lear Corp Vehicle seat provided with active headrest system
JP2007314147A (en) * 2006-05-29 2007-12-06 T S Tec Kk Vehicular seat
US7644987B2 (en) 2004-09-27 2010-01-12 Lear Corporation Vehicle seat having active head restraint system
US20100176630A1 (en) * 2007-07-19 2010-07-15 Ts Tech Co., Ltd. Seat-back frame and vehicle seat
US7963599B2 (en) 2004-10-28 2011-06-21 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US8020930B2 (en) 2005-07-22 2011-09-20 Ts Tech Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8313140B2 (en) 2005-08-30 2012-11-20 Ts Tech Co., Ltd. Vehicle seat and method of assembling vehicle seat

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2846921A1 (en) 2002-11-08 2004-05-14 Faurecia Sieges Automobile Vehicle seat, has moving object with mechanism of superior activations actuated by occupant back when vehicle undergoes tending preset shock to project occupant towards back compared to seat
US8894144B2 (en) 2004-09-27 2014-11-25 Lear Corporation Vehicle seat having active head restraint
US8434818B2 (en) 2004-09-27 2013-05-07 Lear Corporation Vehicle seat having active head restraint
US7644987B2 (en) 2004-09-27 2010-01-12 Lear Corporation Vehicle seat having active head restraint system
US8011726B2 (en) 2004-10-28 2011-09-06 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US8132857B2 (en) 2004-10-28 2012-03-13 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US7967380B2 (en) 2004-10-28 2011-06-28 Ts Tech Co., Ltd. Vehicle seat with cushion plate and pressure adjusting mechanism
US8061774B2 (en) 2004-10-28 2011-11-22 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US9333886B2 (en) 2004-10-28 2016-05-10 Ts Tech Co., Ltd. Method for assembling vehicle seat with cushion plate
US8070223B2 (en) 2004-10-28 2011-12-06 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US8678495B2 (en) 2004-10-28 2014-03-25 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US10214123B2 (en) 2004-10-28 2019-02-26 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US8444219B2 (en) 2004-10-28 2013-05-21 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US7963599B2 (en) 2004-10-28 2011-06-21 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US8132858B2 (en) 2004-10-28 2012-03-13 Ts Tech Co., Ltd. Vehicle seat with cushion plate
US8075052B2 (en) 2004-10-28 2011-12-13 Ts Tech Co., Ltd. Vehicle seat with cushion plate
JP2006182094A (en) * 2004-12-27 2006-07-13 Honda Motor Co Ltd Seat for vehicle
WO2006070650A1 (en) * 2004-12-27 2006-07-06 Ts Tech Co., Ltd. Active headrest mechanism for vehicle seat
JP2006273235A (en) * 2005-03-30 2006-10-12 T S Tec Kk Seat for vehicle
JP2006273234A (en) * 2005-03-30 2006-10-12 T S Tec Kk Seat for vehicle
JP4666470B2 (en) * 2005-03-30 2011-04-06 テイ・エス テック株式会社 Vehicle seat
JP2006347436A (en) * 2005-06-17 2006-12-28 T S Tec Kk Vehicle seat
JP2007022173A (en) * 2005-07-13 2007-02-01 T S Tec Kk Seat for vehicle and method of assembling vehicle seat
WO2007007850A1 (en) * 2005-07-13 2007-01-18 Ts Tech Co., Ltd. Vehicle seat and vehicle seat assembling method
US8240757B2 (en) 2005-07-22 2012-08-14 Ts Tech Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8104830B2 (en) 2005-07-22 2012-01-31 Ts Tech Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8104831B2 (en) 2005-07-22 2012-01-31 Ts Tech. Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8020930B2 (en) 2005-07-22 2011-09-20 Ts Tech Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8322786B2 (en) 2005-07-22 2012-12-04 Ts Tech Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8056973B2 (en) 2005-07-22 2011-11-15 Ts Tech Co., Ltd. Coupling mechanism for headrest of vehicle seat
US8562074B2 (en) 2005-07-22 2013-10-22 Ts Tech Co., Ltd. Vehicle seat
US8313140B2 (en) 2005-08-30 2012-11-20 Ts Tech Co., Ltd. Vehicle seat and method of assembling vehicle seat
US8562073B2 (en) 2005-08-30 2013-10-22 Ts Tech Co., Ltd. Vehicle seat
JP2007083937A (en) * 2005-09-26 2007-04-05 Nihon Technica Co Ltd Active headrest
JP2007186101A (en) * 2006-01-13 2007-07-26 Lear Corp Vehicle seat provided with active headrest system
JP2007186102A (en) * 2006-01-13 2007-07-26 Lear Corp Vehicle seat assembly provided with active headrest system
JP2007314147A (en) * 2006-05-29 2007-12-06 T S Tec Kk Vehicular seat
US8210607B2 (en) 2006-05-29 2012-07-03 Ts Tech Co., Ltd Vehicle seat
WO2007138730A1 (en) * 2006-05-29 2007-12-06 Ts Tech Co., Ltd. Vehicle seat
US8419126B2 (en) * 2007-07-19 2013-04-16 Ts Tech Co., Ltd. Seat-back frame and vehicle seat
US20100176630A1 (en) * 2007-07-19 2010-07-15 Ts Tech Co., Ltd. Seat-back frame and vehicle seat

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