JP2006305241A - Headrest device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headrest device obtained by improving the conventional headrest device, effectively utilizing the conventional configuration to avoid difficulty in assembling and/or manufacturing work, attaining high-speed work, not requiring new training, achieving update of manufacturing equipment at a little cost and with small work, avoiding lowering of economic efficiency, and reducing the waste of equipment and/or material. <P>SOLUTION: In this headrest device, a headrest provided on a seat back is elevated and/or tilted forward by a pair of link mechanisms and an actuating plate buried in the seat back, and in the stage where a shock is applied to the actuating plate, the actuating plate is lifted and/or tilted forward taking the link mechanisms as an origin. The headrest interlocking with the actuating plate can be lifted and/or tilted forward by the above lifting and/or tilting forward, whereby in the case of a collision, a whiplash injury, a neck injury and so on can be avoided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a headrest device that protects a person at the time of impact (collision), and relates to a headrest device that can avoid whiplash, avoid neck injury, etc. as a configuration that rises while the headrest is tilted forward at the time of collision.

  As described above, various inventions (referred to as prior art documents) have been proposed in order to avoid whiplash and neck injury that occur at the time of a collision. However, for practical use, it is considered an urgent need to provide a low-cost device while simplifying the structure. Hereinafter, typical ones of prior documents will be described in detail.

  Document (1) is an “automotive seat back” disclosed in Japanese Patent Application Laid-Open No. 2002-160567. The outline thereof is that a first support member is supported at the lower end of a seat back frame, and a second support member is provided in the middle of the support means. And provided with a lumbar support member capable of pressing and supporting the lumbar vertebra of the occupant by the first support member disposed at a position spaced from the support position of the second support member. It is configured to support the cervical vertebra of the occupant during a rear-end collision (collision) and the lumbar support of the everyday occupant and / or the movement of the headrest is prevented. Intended.

  Reference (2) is an “automobile seat” disclosed in Japanese Patent Application Laid-Open No. 2003-267107, and the outline thereof is that a headrest support frame having a headrest is supported on a seatback frame so as to be able to rotate back and forth. A pressure receiving member that receives a load applied from the front surface of the seat back is provided at the lower portion, and the pressure receiving member is disposed movably in the front-rear direction with respect to the headrest support frame, and a torsion spring that moves and urges the pressure receiving member forward is provided. And a locking means such as a pendulum member that is operated by inertial force at the time of a rear collision (at the time of a collision) to prevent the pressure receiving member from moving in the front-rear direction. It is intended to reliably exert the whiplash reduction effect and reduce the feeling of foreign objects when seated.

  Document (3) is “Active headrest used for automobile seat” disclosed in Japanese Patent Application Laid-Open No. 2005-95202. The outline of the document (3) is a swing in the front-rear direction of the frame passed between the left and right brackets protruding from the frame of the seat back. A headrest pedestal that is movably supported, one stay holder that is fixedly supported at the center of the pedestal of the headrest, and an impact load at the tip that is integrally coupled to the stay holder It is equipped with a headrest vertical adjustment device that adjusts the height position of the headrest by moving the stay up and down by the vertical movement of the pressure receiving plate and the electric motor and the stay holder. The headrest prevents the passenger's head from moving too far backward, preventing the passenger's neck injury. When, also the headrest to the head by vertically moving the headrest in the power drive to readily conform the like, is intended to sufficiently exhibit the function of the headrest.

JP2002-160567 JP2003-267107A JP-A-2005-95202

  In the document (1), a lumbar support member capable of pressing and supporting the lumbar vertebra of an occupant is supported by an operating means and / or a retractor so that the lumbar support member can move back and forth and move up and down. Therefore, it can be considered that the configuration is complicated and the cost is increased. In addition, since it is necessary to adopt a configuration that is completely different from the conventional configuration, for example, it is considered that assembly work is difficult and slow, and in particular, renewal of manufacturing equipment is required. Problems such as deterioration in performance and waste of equipment can be considered.

  Reference (2) is a configuration in which the headrest support frame pivotally supported by the seat back frame is moved back and forth (movable) by a pressure receiving portion, a link mechanism and / or a spring. Accordingly, the headrest remains in a configuration that moves back and forth. For example, it is not necessarily considered sufficient for avoiding whiplash at the time of collision, protecting the occupant's cervical spine, and supporting the occupant's lumbar spine on a daily basis.

  Further, in the reference (3), the headrest has a headrest vertical adjustment device that adjusts the height position of the headrest by moving the stay up and down by the vertical movement of the electric motor and the stay holder. Therefore, since it becomes complicated with respect to the conventional configuration, for example, assembly and / or manufacturing operations become difficult, new training is required, which is troublesome, and these operations can be slowed. In addition, since renewal of manufacturing equipment is required, problems such as a reduction in economic efficiency and waste of equipment can be considered.

  In view of the above, the present invention proposes a headrest device that can avoid whiplash and neck injury at the time of a collision, which is one of the conventional problems, while following the conventional configuration. In addition, the present invention effectively avoids the difficulty of assembly and / or manufacturing operations, which is another conventional problem, and speeds up these operations by effectively utilizing the conventional configuration. A headrest device that requires no special training and that can be used to renew manufacturing equipment at a low cost and cost, avoiding a decrease in economic efficiency and reducing waste of equipment and / or materials. Propose the device. In addition, the present invention proposes a headrest device that can be further improved to effectively use facilities and / or materials, which are features that have not existed in the past, and to achieve economical efficiency and environmental maintenance.

  The invention according to claim 1 is a headrest intended to avoid whiplash and neck injury at the time of a collision, which is a conventional problem, by adding fine improvements while following the conventional configuration. Providing equipment. Further, the invention of claim 1 makes it possible to avoid the difficulty of assembly and / or manufacturing work, which has been a conventional problem, and to speed up these work by effectively utilizing the conventional configuration. In addition to providing a headrest device having a configuration that does not require new training, the renewal of manufacturing equipment can be achieved with a small amount of cost and work, and it is possible to avoid a decrease in economy, and waste of equipment and / or materials, etc. Provided is a headrest device that reduces the number of headrests. And this invention of Claim 1 provides the headrest apparatus which intends the effective use of the installation and / or material etc. which were not conventionally, and economical efficiency and / or environmental maintenance by adding further improvement.

According to a first aspect of the present invention, there is provided a metal frame embedded in the seat back, a link mechanism pivotally supported on the frame, an operation plate embedded in the seat back pivotally supported on the link mechanism, and fixed to the operation plate. A headrest device configured with a headrest mechanism,
At the time of impact on the working plate, the lower part of the working plate is pressed to the frame side (right side in the drawing) with the base end of the link mechanism (upper and lower link plates) as a base point, and the whole working plate Rises with respect to the frame with the free end of the link mechanism as a base point, and the upper part of the operating plate tilts forward to the opposite frame side (left side in the drawing) with the free end of the link mechanism as a base point, The headrest device is characterized in that the headrest can be lifted and / or tilted forward by raising and / or tilting forward of the operating plate.

  The invention of claim 2 achieves the object of claim 1 and provides a link mechanism important for achieving this object.

  The link mechanism according to claim 1, wherein the link mechanism according to claim 1 is configured by an upper and lower link plate each having a base end portion pivoted on a frame provided on the seat back and a free end portion pivoted on the operation plate. The link plate is provided in a vertical relationship with the frame and / or the operation plate, the upper link plate is configured to be longer than the lower link plate, and the operation plate is configured to be able to rise and / or tilt forward. It is a headrest apparatus characterized by these.

  The invention of claim 3 achieves the object of claim 1 and provides a headrest mechanism important for achieving the object.

  According to a third aspect of the present invention, in the headrest mechanism according to the first aspect, the bracket supported on the frame via the upper and lower link plates and / or the actuating plate, the headrest support inserted into the bracket, and the headrest support. The headrest device is characterized in that it is supported by a headrest stay.

  The invention of claim 4 achieves the object of claim 1 and provides an actuating plate and / or spring arrangement adapted to achieve this object.

  According to a fourth aspect of the present invention, a spring is interposed between the lower back surface of the operating plate according to the first aspect and the front side of the frame, and the operating plate, the headrest, and the headrest are supported using the spring. The headrest device is characterized in that the bracket, the headrest support and / or the headrest stay can be returned.

  The invention according to claim 5 achieves the object of claim 1 and provides a structure of the actuating plate adapted to achieve this object.

  According to a fifth aspect of the present invention, the operating plate according to the first aspect is used by using a cushion body of a seat back, and the operating plate, the headrest, a bracket for supporting the headrest, a headrest support and / or a headrest stay are restored. It is a headrest device characterized by having a possible configuration.

  The invention of claim 6 achieves the object of claim 1 and provides a structure of a link plate provided with an optimal spring for achieving this object.

  A sixth aspect of the present invention has a structure in which a spring is mounted on a shaft that pivotally supports the lower link plate according to claim 1, and both free ends of the spring are latched to the frame and / or the lower link plate. It is the headrest apparatus characterized by having performed.

  The invention according to claims 7 and 8 achieves the object of claim 1 and provides an optimal working plate configuration for achieving the object.

  According to a seventh aspect of the present invention, the operating plate according to the first aspect is formed in a flat plate shape on the upper side and a bulging shape on the lower side when viewed from the side, so that the impact on the seat back can be easily absorbed. The headrest device is characterized in that it facilitates easy transmission, easily conforms to the shape of the seat back, and can eliminate a sense of discomfort to people.

  According to an eighth aspect of the present invention, the operating plate according to the first aspect is configured by a V-shaped branch portion when viewed from the front and an I-shaped main body portion that converges the branch portion, and the headrest mechanism is provided at the branch portion. The headrest device is characterized by being configured to be secured.

The invention of claim 1 includes a metal frame embedded in the seat back, a link mechanism pivotally supported on the frame, an operation plate embedded in the seat back pivotally supported on the link mechanism, and a headrest secured to the operation plate. A headrest device configured by a mechanism,
At the time of impact on the operating plate, the lower part of the operating plate is pressed to the frame side with the base end of the link mechanism as a base point, and the entire operating plate rises with respect to the frame with the free end of the link mechanism as a base point, and The upper part of the operating plate tilts forward to the opposite frame side with the free end of the link mechanism as a base point, and the headrest can be raised and / or tilted forward by raising and / or moving forward of the operating plate. It is a headrest device.

  Therefore, claim 1 can provide a headrest device capable of avoiding whiplash and neck injury at the time of a collision, which is a conventional problem, by adding fine improvements while following the conventional configuration. There are features. In addition, this claim 1 makes it possible to avoid the difficulty of assembly and / or manufacturing work, which has been a conventional problem, and to speed up these work by effectively utilizing the conventional configuration. A headrest device that can provide a headrest device that does not require training, in particular, can be renewed with a small amount of cost and work, avoids a decrease in economic efficiency, and has less waste of equipment and / or materials. There are practical benefits that can be provided. And this claim 1 has the characteristics which can provide the headrest apparatus which can aim at the effective use of the installation and / or material which were not conventionally, and can aim at economical efficiency and environmental maintenance by adding further improvement.

  According to a second aspect of the present invention, in the link mechanism according to the first aspect of the present invention, the frame is provided with a base end on the frame provided on the seat back, and upper and lower link plates each having a free end portion pivoted on the operation plate. The headrest device is configured such that the plate is provided in a vertical relationship with the frame and / or the operation plate, the upper link plate is configured to be longer than the lower link plate, and the operation plate can be raised and / or tilted forward.

  Accordingly, the second aspect has features such that the object of the first aspect can be achieved and a link mechanism important for achieving the object can be provided.

  According to a third aspect of the present invention, in the headrest mechanism according to the first aspect, the bracket supported on the frame via the upper and lower link plates and / or the actuating plate, the headrest support inserted into the bracket, and the headrest support. The headrest device is configured to be supported by the headrest stay.

  Accordingly, the third aspect has features such that the object of claim 1 can be achieved and a headrest mechanism important for achieving the object can be provided.

  According to a fourth aspect of the present invention, a spring is interposed between the lower back surface of the operating plate according to the first aspect and the front side of the frame, and the operating plate, the headrest, and the bracket that supports the headrest using the spring. And a headrest device in which the headrest support and / or the headrest stay can be returned.

  Accordingly, the fourth aspect has features such that the object of the first aspect can be achieved, and an actuating plate and / or a spring configuration suitable for achieving the object can be provided.

  According to a fifth aspect of the present invention, the operation plate according to the first aspect is utilized by using a cushion body of a seat back, the operation plate, the headrest, a bracket for supporting the headrest, a headrest support and / or a headrest stay. Is a headrest device that can be restored.

  Accordingly, the fifth aspect has the characteristics that the object of the first aspect can be achieved, and that the operation plate can be optimally configured to achieve the object.

  The invention of claim 6 is configured such that a spring is mounted on a shaft pivotally supporting the lower link plate according to claim 1, and both free ends of the spring are latched to the frame and / or the lower operation plate. The headrest device.

  Accordingly, the sixth aspect has the characteristics that the object of the first aspect can be achieved, and the structure of the link plate provided with the spring optimal for achieving the object can be provided.

  According to a seventh aspect of the present invention, the operating plate according to the first aspect of the present invention has a flat plate shape on the upper side and a bulging shape on the lower side as viewed from the side, making it easy to absorb the impact on the seat back, and the impact to the headrest mechanism. The headrest device is configured to facilitate easy transmission, easily conform to the shape of the seat back, and eliminate a sense of incongruity to people.

  According to an eighth aspect of the present invention, the headrest mechanism is fixed to the branch portion formed of the V-shaped branch portion when viewed from the front and the I-shaped main body portion that converges the branch portion. The headrest device is configured to stop.

  Accordingly, claims 7 and 8 have the characteristics that the object of claim 1 can be achieved, and the optimum form of the link plate can be provided to achieve this object.

  An example of the present invention will be described.

  Referring to the drawings, FIG. 1 is an overall perspective view showing an example of a seat back of a vehicle, FIG. 2 is a schematic cross-sectional view in a normal state showing a first embodiment, and FIG. 2-1 is a use state of FIG. FIG. 3 is a schematic cross-sectional view illustrating the first embodiment, FIG. 3A is a schematic cross-sectional view illustrating the usage state of FIG. 3, and FIG. 4 is a cross-sectional view of the headrest mechanism and the operating plate. FIG. 5 is an enlarged side view of the main part explaining the relationship between the frame and the operation plate, and FIG. 5A is the main part explaining the relationship between the other frame and the operation plate. FIG. 6 is a schematic cross-sectional view showing the second embodiment in a normal state, FIG. 6-1 is a schematic cross-sectional view illustrating the use state of FIG. 6, and FIG. 7 is a collision showing the second embodiment. FIG. 7A is a schematic cross-sectional view illustrating the usage state of FIG. 7.

  The present invention is a headrest device mounted on a seat back A1 constituting the vehicle seat A shown in FIG. 1, and includes a first embodiment and a second embodiment described below.

  First, the first embodiment shown in FIGS. 2 to 5 will be described. Reference numeral 1 denotes a metal frame embedded in the seat back A1, and the support plates 100 and 101 provided on the upper end of the frame 1 include: The base end portions 20 and 30 of the upper and lower link plates 2 and 3 having long and short configurations are pivotally supported. The free end portions 21 and 31 of the upper and lower link plates 2 and 3 are pivotally supported by support plates 500 and 501 provided at the upper end of the operation plate 5 described later. Therefore, the operating plate 5 is normally pressed (opened), and the operating plate 5 has substantially the same positional relationship as the frame 1 as shown in FIG. 2 and 3 are in a state of a substantially inverted C shape when viewed from the side. When the operation plate 5 is pressed by an impact such as a collision (operation), the upper end of the operation plate 5 protrudes from the upper end of the frame 1 and the upper and lower link plates 2 and 3 are substantially inclined. . Therefore, the operating plate 5 is provided with means for enabling upward movement by pressing at the time of a collision. For example, a substantially semi-curved bulging portion 50 formed downward as shown in the cross section in each drawing. In addition, a stopper 6 provided to be inclined upwardly below the lower link plate 3 or a long / short relationship between the upper and lower link plates 2 and 3 is employed. However, the upward movement of the operation plate 5 is preferably a combination of the bulging portion 50 and the stopper 6 or the long and short relationship between the upper and lower link plates 2 and 3, but there may be a single configuration example. In the figure, 51 is a flat portion branched from the upper side of the working plate 5, and 52 and 52 (52) are bent portions that are branched from the upper end of the working plate 5. The link plates 2 and 3 are moved upward.

  The actuating plate 5 has an I-shaped bulging portion 50 as viewed from the front, a pair of flat portions 51 having a substantially V-shape branched from the bulging portion 50, and a bent portion following the flat portion 51. It is comprised with the part 52 (it is set as the bending part 52). As described above, the operation plate 5 is configured to be able to move upward when a pressure is applied during a collision.

  A pair of headrest mechanisms 10 and 10 (10 will be described on one side) are respectively provided in the bent portion 52 formed by branching on the operation plate 5, and an example of the headrest mechanism 10 will be described. Then, the bracket 11 is fixed to the bent portion 52, the headrest support 12 is inserted into the bracket 11, the headrest stay 13 is inserted into the headrest support 12, and the headrest 14 is provided on the headrest stay 13. The headrest stay 13 and the headrest 14 are moved up and down by operating the lock button 15. As will be described later, reference numeral 25 in the figure denotes a spring provided between the bulging portion 50 of the operation plate 5 and the transfer rod 103 provided on the frame 1, and controls the return of the operation plate 5.

  Although not shown, the stopper 6 is provided with a buffering function to provide a buffering effect for the return of the headrest 14 and to reduce the impact, so that the headrest 14 that is kind to the sick can be provided. Similarly, a buffering function (equipment such as a spring and a cam) is interposed between the upper and lower link plates 2 and 3 (the lower link plate 3 is illustrated), and a buffering effect is imparted to the upper and lower link plates 2 and 3. Thus, the above-described effects can be exhibited. Although not shown, the upper and lower link plates 2 and 3 can be moved by using a handle operation, thereby changing the buffer effect, changing the buffer region and / or the upper and lower link plates 2, It is also possible to change the length of 3 etc. Note that this handle operation can be interlocked with the reclining mechanism.

  As described above, the substantially lower side of the operating plate 5 (the bulging portion 50 and the vicinity thereof) was pressed (retracted) by the rear side (the rear side of the vehicle: the frame side) due to an impact caused by a collision, rollover, rollover, etc. ) Stage (indicated by arrow A), when the spring 25 is compressed, the lower link plate 3 is regulated by the stopper 6 and is provided on the support plate 101 so as to be inclined slightly upward. The link plate 3 serves as a fulcrum, and the free end portion 31 of the lower link plate 3 and the free end portion 21 of the upper link plate 2 provided on the support plate 100 of the operation plate 5 so as to be inclined downward are upward. Move. Accordingly, the operation plate 5 is pushed up with the support plates 100 and 101 as base points (indicated by arrows B) by the movement of the free end portions 21 and 31 of the upper and lower link plates 2 and 3. The push-up of the operating plate 5 converges to the above-described upper and lower link plates 2 and 3 and the inclination angle of the upper and lower link plates 2 and 3 (front side “front side of vehicle: anti-frame side”). In addition, the configuration of the flat portion 51 forming the working plate 5 and the bent portion 52 formed by branching are also helped, and the configuration can be pushed up reliably and smoothly. As the free end portions 21 and 31 of the upper and lower link plates 2 and 3 are raised, the bracket 11, the headrest support 12 and the headrest stay 13 and the headrest 14 (the headrest mechanism 10 and the main body is the headrest 14) are pushed up. At the same time as the headrest 14 is pushed up, the upper link plate 2 has a long dimension (which means that the length is longer than the lower link plate 3) and / or the upper and lower link plates 2, 3 are inclined at a predetermined inclination angle. Therefore, the headrest 14 is tilted forward (indicated by an arrow C). That is, when pressing against the operating plate 5, as described above, the headrest 14 is raised and tilted forward. For example, the headrest 14 is securely guarded so as to contact the neck H (the neck at the time of collision). Guarding the aspect of tilting backward while suppressing the elongation of the portion H), avoiding whiplash at the time of a collision, avoiding neck injury and the like. In FIG. 3A in which the state of the impact is shown as a vector, an impact of a combined vector of a physical quantity related to the impact force and a physical quantity related to the vertical direction is generated. (The extension of the neck H is indicated by an arrow D).

  In the figure, reference numeral 25 denotes a spring provided in a slightly upwardly inclined state between the operating plate 5 and the transfer rod 103 provided on the frame 1 and is compressed by pressing the operating plate 5 to release the pressure to the operating plate 5. The operation plate 5 is restored. The upward inclination of the spring 25 and the lower curved surface of the lower side of the bulging portion 50 contribute to the rising of the working plate 5. In the figure, reference numeral 26 denotes a spring mounted on the shaft of the lower link plate 3, and both free ends thereof are latched (locked) to the lower link plate 3 and the transfer rod 103 (frame 1). The spring 26 has a damper function intended to surely return the lower link plate 3. The spring 26 is tightened when the operating plate 5 is pressed, and relaxed when the operating plate 5 is opened (when no pressure is applied). The spring 26 is provided as necessary in the first embodiment. Although not shown, it is also conceivable that the upper link plate 2 is provided with a spring (not shown) having a damper function so as to be buffered at the time of impact or the like. The spring 26, the cushion body A2, and the like can be formed with other damper structures as long as the mechanism can exhibit the same effect.

  Next, the second embodiment shown in FIGS. 6 to 7-1 will be described. The second embodiment is basically the same as the first embodiment, and the difference is that a spring 25 is provided. There is no simple structure. Therefore, in this example, the spring 26 is an important element. The reason is that the spring 25 is omitted, and the return of the operating plate 5 can be replaced with the spring 25. For example, a configuration using the repulsive force of the cushion body A2 constituting the seat back A1. There can be. In this example, the load applied to the spring 26 is carried. Other configurations and operations are the same as those in the first embodiment.

  Although not shown, the structure that is compressed by pressing against the operating plate 5 and repels by releasing the pressing against the operating plate 5 includes the individual structure of the spring 25 or the cushion body A2, and the spring 25 and the cushion body A2. A combination of the above is conceivable.

  Further, the lower link plate 3 shown in FIG. 5A is divided on both sides of the base end portion 30 and the free end portion 31, and a spring 27 is provided in the middle so that the lower link plate 3 functions as the lower link plate 3. However, it is also possible to give a buffer effect to the lower link plate 3. In this configuration example, the spring 26 can be omitted. In addition, it is possible to employ | adopt the structural example of FIGS. 5-1, etc. for the upper link board 2, for example.

FIG. 1 is an overall perspective view showing an example of a vehicle seat back. FIG. 2 is a schematic cross-sectional view at the normal time showing the first embodiment. FIG. 2-1 is a schematic cross-sectional view illustrating the use state of FIG. FIG. 3 is a schematic sectional view at the time of collision showing the first embodiment. FIG. 3A is a schematic cross-sectional view illustrating the usage state of FIG. FIG. 4 is an enlarged front view of the main part for explaining the relationship between the headrest mechanism and the operation plate. FIG. 5 is an enlarged side view of the main part for explaining the relationship between the frame and the operation plate. FIG. 5-1 is an enlarged side view of a main part for explaining the relationship between another frame and the operation plate. FIG. 6 is a schematic cross-sectional view at the normal time showing the second embodiment. FIG. 6A is a schematic cross-sectional view illustrating the usage state of FIG. FIG. 7 is a schematic sectional view at the time of collision showing the second embodiment. FIG. 7-1 is a schematic cross-sectional view illustrating the use state of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 100 Support plate 101 Support plate 102 Delivery rod 103 Delivery rod 2 Upper link plate 20 Base end portion 21 Free end portion 3 Lower link plate 30 Base end portion 31 Free end portion 5 Actuation plate 50 Swelling portion 51 Flat portion 52 Bending portion 500 Support plate 501 Support plate 6 Stopper 10 Headrest mechanism 11 Bracket 12 Headrest support 13 Headrest stay 14 Headrest 15 Lock button 25 Spring 26 Spring 27 Spring A Seat A1 Seat back A2 Cushion body H Neck

Claims (8)

Consists of a metal frame embedded in the seat back, a link mechanism pivotally supported by the frame, an operating plate embedded in the seat back pivotally supported by the link mechanism, and a headrest mechanism secured to the operating plate. A headrest device,
At the time of impact on the operating plate, the lower portion of the operating plate is pressed to the frame side with the base end portion of the link mechanism as a base point, and the entire operating plate is applied to the frame with the free end portion of the link mechanism as a base point. And the upper part of the operating plate is tilted forward to the opposite frame side with the free end of the link mechanism as a base point, and the headrest is lifted and / or fronted by the rising and / or forward tilting of the operating plate. A headrest device characterized in that it can be tilted. The link mechanism according to claim 1 is configured by an upper and lower link plate that pivotally supports a base end portion of the frame provided on the seat back and a free end portion of the operation plate, respectively. A headrest characterized in that it is provided in a vertical relationship with the frame and / or the operating plate, the upper link plate is configured to be longer than the lower link plate, and the operating plate can be raised and / or tilted forward. apparatus. The headrest mechanism according to claim 1 is supported by a bracket that is supported on the frame via upper and lower link plates and / or operation plates, a headrest support that is inserted into the bracket, and a headrest stay that is inserted into the headrest support. A headrest device characterized by being configured. A spring is interposed between the lower back surface of the operating plate according to claim 1 and the front side of the frame, and using this spring, the operating plate, the headrest, a bracket for supporting the headrest, and a headrest A headrest device characterized in that the support and / or the headrest stay can be returned. The operation plate according to claim 1 is configured such that the operation plate, the headrest, a bracket for supporting the headrest, the headrest support and / or the headrest stay can be returned using the cushion of the seat back. A headrest device characterized by that. A spring is mounted on a shaft pivotally supporting the lower link plate according to claim 1, and both free ends of the spring are latched to the frame and / or the lower link plate. Headrest device. The operation plate according to claim 1 has a flat plate shape on the upper side and a bulge shape on the lower side when viewed from the side, so that the shock to the seat back is easily absorbed, and the shock is easily transmitted to the headrest mechanism. In addition, the headrest device is characterized in that it easily conforms to the shape of the seat back and is configured to eliminate a sense of discomfort to people. The actuating plate according to claim 1 includes a V-shaped branch portion in front view and an I-shaped main body portion that converges the branch portion, and the headrest mechanism is secured to the branch portion. A headrest device characterized by that.

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