WO2016171138A1 - 車両用シートのヘッドレスト - Google Patents
車両用シートのヘッドレスト Download PDFInfo
- Publication number
- WO2016171138A1 WO2016171138A1 PCT/JP2016/062396 JP2016062396W WO2016171138A1 WO 2016171138 A1 WO2016171138 A1 WO 2016171138A1 JP 2016062396 W JP2016062396 W JP 2016062396W WO 2016171138 A1 WO2016171138 A1 WO 2016171138A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- headrest
- stay
- vehicle seat
- opening
- hinge
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/838—Tiltable
- B60N2/841—Tiltable characterised by their locking devices
- B60N2/844—Release mechanisms, e.g. buttons
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/838—Tiltable
- B60N2/856—Tiltable movable to an inoperative or stowed position
Definitions
- the present invention relates to a headrest for a vehicle seat that is used in a vehicle and on which a passenger sits.
- Patent Document 1 JP 2006-87702 A
- Patent Document 1 includes a lock mechanism for fixing a headrest mounted on an upper portion of a seat back at a use position, and a lock release mechanism for releasing a lock state by the lock mechanism.
- a vehicle seat device including a lock plate mounted on a rotating shaft and an engagement hook that engages with the lock plate, and an unlocking mechanism that includes an actuating rod that protrudes from the upper portion of the seat back toward the headrest.
- Patent Document 1 describes a configuration in which the periphery of an insert stay disposed as a core of a headrest is covered with a pad body such as urethane foam and a cushion body made of a skin material (see paragraph 0012). .
- Patent Document 1 does not sufficiently describe the configuration of the lower end side of the headrest.
- the cushion body normally covers the headrest from the top to the bottom. For this reason, an opening is formed on the lower end side of the headrest.
- the stay that holds the headrest on the seat back side protrudes downward from the opening. When the headrest tilts, the opening allows the tilting operation without the stay interfering with the cushion body.
- a lock mechanism is accommodated in the inner space of the headrest covered with the cushion body.
- the user may touch the headrest, and the user's finger may enter the internal space in which the lock mechanism is accommodated from the opening of the cushion body.
- An object of the present invention is to provide a headrest that prevents a user's finger from being inserted into the internal space of the headrest when the user touches the headrest.
- a headrest for a vehicle seat includes a stay that is held on a seat back side, and a headrest body that is rotatably supported forward from a use position with respect to the stay.
- the headrest main body includes a main body frame that forms a strength member, a hinge portion that rotatably connects the main body frame to the stay, and a lock mechanism that fixes the main body frame to the stay at a use position.
- the lower surface of the headrest body is covered with a resin lower cover having an opening through which the stay is inserted.
- the present invention it is possible to provide a headrest that prevents the user's fingers from being inserted into the internal space of the headrest when the user touches the headrest.
- FIG. 1 is a perspective view of a vehicle seat according to an embodiment of the present invention. It is the top view (front view) which looked at the headrest which concerns on one Example of this invention from the front. It is the top view (side view) which looked at the headrest which concerns on one Example of this invention from the side. It is a top view which shows the structure (locked state) of the right side hinge part of the headrest which concerns on one Example of this invention. It is a top view which shows the structure (non-locking state) of the right side hinge part of the headrest which concerns on one Example of this invention. It is a top view which shows the structure (at the time of a lock
- FIG. 1 is a perspective view of a vehicle seat according to an embodiment of the present invention.
- a vehicle seat 1 includes a seat cushion 2 on which a person is seated, a seat back 3 erected at the rear end of the seat cushion, and a headrest 4 provided at an upper end portion of the seat back 3. It has.
- the seat cushion 2 is attached to the vehicle floor in a state in which the position can be adjusted in the front-rear direction.
- the seat back 3 is connected to the seat cushion 2 so as to be rotatable about a rotation shaft 3A provided at the lower end.
- the headrest 4 is attached to the seat back 3 in a state where the height position can be adjusted.
- the seat cushion 2, the seat back 3, and the headrest 4 are configured such that a frame serving as a skeleton member and a cushion material made of foamed resin are provided inside, and the surface of the cushion material is covered with a cover.
- the rotation shaft 3 ⁇ / b> A covered with the cushion material and the cover is indicated by a one-dot chain line.
- FIG. 2 is a plan view (front view) of a headrest according to an embodiment of the present invention as viewed from the front.
- FIG. 3 is a plan view (side view) of a headrest according to an embodiment of the present invention as viewed from the side. 2 is a view seen from the direction of arrow II in FIG. 3, and FIG. 3 is a view seen from the direction of arrow III in FIG. 2 and 3 show the body frame 401 and the like provided on the inner side as seen through.
- FIG. 2 shows a state in which a part is cut away.
- the headrest 4 includes a main body frame 401, a stay 402, a hinge portion 403, a rotating shaft (tilting shaft) 404, a connecting portion 405, a biasing member 406, a cushion material 407, and a lower cover (bottom cover). 408, an outer skin 409, and an operation strap 410.
- the main body frame 401 is a strength member that becomes a skeleton of the headrest main body 4A, and is made of metal.
- the main body frame 401 includes a right frame portion 401a, a left frame portion 401b, and a connecting frame portion 401c that connects the right frame portion 401a and the left frame portion 401b.
- An extension 401d bent toward the inside of the headrest 4 is provided at the lower end of the right frame 401a.
- the right frame portion 401a is a frame portion provided on the right side in the width direction of the vehicle seat 1 and extending in the vertical direction.
- the left frame portion 401b is a frame portion provided on the left side in the width direction of the vehicle seat 1 and extending in the vertical direction.
- the right frame portion 401a and the left frame portion 401b extend in the up-down direction, but they are not limited to the vertical direction and may be inclined from the vertical direction.
- the connecting frame portion 401c is a frame portion that connects the right frame portion 401a and the left frame portion 401b.
- the connecting frame part 401c connects the upper end part side of the right frame part 401a and the upper end part side of the left frame part 401b.
- Each connecting part draws a curve.
- the main body frame 401 has a substantially quadrangular shape (substantially rectangular shape) whose corners are formed of curves by a right frame portion 401a, a left frame portion 401b, a connecting frame portion 401c, and an extension portion 401d.
- a right frame portion 401a, the left frame portion 401b, the connecting frame portion 401c, and the extension portion 401d has a straight line portion.
- the straight line part of the right frame part 401a and the straight line part of the left frame part 401b are parallel.
- the straight portion of the connecting frame portion 401c forms an angle (right angle) of 90 degrees with respect to the straight portion of the right frame portion 401a and the straight portion of the left frame portion 401b.
- the straight portion of the extension portion 401d is parallel to the straight portion of the connection frame portion 401c, and forms an angle (right angle) of 90 degrees with respect to the straight portion of the right frame portion 401a.
- the stay 402 is a member that protrudes downward from the main body 4 ⁇ / b> A of the headrest 4 and serves as a support column that supports the main body 4 ⁇ / b> A on the upper portion of the seat back 3.
- the stay 402 includes a right stay 402a, a left stay 402b, and a connecting stay 402c that connects the right stay 402a and the left stay 402b.
- the connecting stay part 402c connects the upper end part side of the right stay part 402a and the upper end part side of the left stay part 402b. Each connecting part draws a curve.
- the stay 402 is formed in an inverted U shape by a right stay portion 402a, a left stay portion 402b, and a connecting stay portion 402c.
- the right stay portion 402a, the left stay portion 402b, and the connecting stay portion 402c each have a straight portion.
- the straight portion of the right stay portion 402a and the straight portion of the left stay portion 402b are parallel.
- the straight portion of the connecting stay portion 402c forms an angle (right angle) of 90 degrees with respect to the straight portion of the right stay portion 402a and the straight portion of the left stay portion 402b.
- the straight portion of the connecting stay portion 402 c is provided further below the lower end of the main body frame 401. That is, the extension 401d formed at the lower end of the right frame 401a is positioned higher (upward) than the straight portion of the connecting stay 402c.
- the left stay portion 402b is bent at the upper end portion 403e of the straight portion, as shown by a one-dot chain line 402d in FIG. Further, the right stay portion 402a is also bent at the upper end of the straight portion, like the left stay portion 402b. Since the bent portions 403e are provided on the right stay portion 402a and the left stay portion 402b, the connecting stay portion 402c is disposed so as to cover the upper side of the rotating shaft 404.
- the hinge portion 403 is provided at the lower end portion of the main body frame 401.
- the hinge portion 403 includes a right hinge portion 403a provided at the lower end portion of the right frame portion 401a and a left hinge portion 403b provided at the lower end portion of the left frame portion 401b.
- the hinge part 403 will be described in detail later.
- Rotating shaft (tilting shaft) 404 is connected to right hinge portion 403a and left hinge portion 403b. However, the rotating shaft (tilting shaft) 404 is not fixed to the right hinge portion 403a and the left hinge portion 403b. That is, the right hinge portion 403 a and the left hinge portion 403 b are connected to the rotation shaft 404 so as to be rotatable about the rotation shaft 404.
- Rotating shaft 404 is a rod-shaped member that forms a straight line. In this embodiment, a round bar having a circular cross section is used. The rotation shaft 404 is parallel to the straight portion of the connecting stay portion 402c and the straight portion of the connecting frame portion 401c.
- the rotating shaft 404 is disposed at a position lower than the straight portion of the connecting stay portion 402c. That is, the rotation shaft 404 is disposed below the straight portion of the connecting stay portion 402c.
- the connecting portion 405 is a member that connects the rotating shaft 404 and the straight portion of the connecting stay portion 402c.
- the connecting portion 405 has a right connecting portion 405a and a left connecting portion 405b that are located at both ends of the straight portion of the connecting stay portion 402c, and the rotating shaft 404 and the connecting stay portion 402c are connected by both connecting portions 405a and 405b. Is fixed.
- the biasing member 406 is a member that is provided between the rotating shaft 404 and the main body frame 401 and biases the main body frame 401 forward.
- the urging member 406 is constituted by a coil spring and is fitted on the rotation shaft 404. That is, the coil spring 406 is attached to the rotation shaft 404 so that the rotation shaft 404 passes through the center of the coil spring 406.
- One end of the coil spring 406 is hooked to the right connecting portion 405a.
- the other end of the coil spring 406 is hooked on the extension 401 d of the main body frame 401.
- the extension part 401d of the main body frame 401 constitutes a latching part of the coil spring 406.
- the other end portion of the coil spring 406 is not limited to the extension portion 401d of the main body frame 401, but may be hooked to the main body frame 401 side.
- the one end part of the coil spring 406 should just be latched not only to the right side connection part 405a but the stay 402 side. Thereby, the coil spring 406 can urge the headrest body 4A to tilt forward.
- the state in which the headrest body 4A is tilted forward is indicated by reference numeral 4A '.
- the cushion material 407 is provided so as to cover the entire periphery of the main body frame 401, the hinge portion 403, the rotating shaft 404, the connecting portion 405, and the biasing member 406.
- the cushion material 407 covers the upper end portion of the stay 402.
- the lower cover (bottom cover) 408 is attached to an opening formed at the lower end of the cushion material 407.
- the lower cover 408 will be described in detail later.
- the skin 409 covers the outer surface of the cushion material.
- the skin 409 may be provided so as to cover the outer periphery of the lower cover 408.
- the operation strap 410 is for performing a release operation of the lock mechanism 500 (see FIG. 4). By releasing the lock mechanism 500, the headrest body 4A can be tilted forward.
- the headrest of the present embodiment includes a stay 402 held on the seat back side, and a headrest body 4 ⁇ / b> A supported so as to be pivotable forward from the use position with respect to the stay 402.
- the hinge portion 403 is a member that rotatably connects the main body frame 401 of the headrest main body 4A to the stay 402.
- FIG. 4 is a plan view showing the structure (locked state) of the right hinge portion of the headrest according to one embodiment of the present invention.
- a lock mechanism 500 is provided on the back surface of the left hinge portion 403b.
- the lock mechanism 500 includes a rotation plate 501, an engagement hook 502, an engagement hook biasing spring 503, an operation lever 504, and an operation lever biasing spring 505.
- Rotating plate (swing plate) 501 is fixed to rotating shaft 404.
- the rotation plate 501 swings (rotates) with respect to the left hinge portion 403b around the rotation axis (swing axis) 404.
- the left hinge part 403b swings with respect to the rotation plate 501.
- the swing of the left hinge part 403b and the rotation plate 501 is relative. Actually, since the rotation plate 501 is on the fixed side, the left hinge portion 403b swings relative to the rotation plate 501.
- the rotation plate 501 is provided with an engagement groove 501a and a sliding surface 501b.
- the engagement groove 501a constitutes an engagement portion with which the engagement hook 502 is engaged.
- the lock mechanism 500 is locked.
- the sliding surface 501b is a curved surface on which the engagement hook 502 removed from the engagement groove 501a slides when the headrest body 4A tilts toward the front F or returns from the tilted position to the use position.
- the sliding surface 501b is configured as an arc-shaped surface with the center of the rotation shaft 404 as the center.
- the rotation plate 501 is provided with a protrusion 501c that comes into contact with the edge 403ba of the left hinge 403b. In normal times, there is a gap between the protrusion 501c and the edge 403ba, and the protrusion 501c and the edge 403ba are not in contact with each other.
- the protrusion 501c and the edge 403ba abut against each other and receive a force that acts on the headrest body 4A. Thereby, it is possible to prevent the headrest body 4A from tilting (rearward tilting) toward the rear side.
- the height of the side surface 501aa is higher than the height of the side surface 501ab. This is to ensure that when the headrest body 4A is returned from the tilted position to the use position, the engagement claw 502a of the engagement hook 502 is surely engaged with the engagement groove 501a while sliding on the sliding surface 501b. It is.
- the engaging hook 502 and the rotating plate 501 are prevented from coming off from the side surface 501aa of the engaging groove 501a when the engaging claw 502a is pulled up. It is possible to prevent the engagement failure with. If the headrest body 4A is tilted backward while the tip of the engaging claw 502a is pulled out from the side surface 501aa of the engaging groove 501a, the engagement between the engaging hook 502 and the rotating plate 501 may be disengaged.
- the engaging hook 502 is attached to the left hinge part 403b so as to be able to swing around the swinging shaft 502b. That is, the swing shaft 502b is provided on the left hinge portion 403b.
- the engagement hook 502 has an engagement claw (hook) 502a that engages with the engagement groove 501a of the rotation plate 501 at one end.
- An engagement pin (engagement protrusion) 502c that engages with the operation lever 504 is provided in the vicinity (one end portion) of the engagement claw 502a.
- the engagement hook 502 has a biasing spring latching portion 502d on which one end of the engagement hook biasing spring 503 is latched at the other end on which the swing shaft 502b is provided.
- the engagement hook urging spring 503 is a coil spring and is disposed on the swing shaft 502 b of the engagement hook 502. One end of the engagement hook biasing spring 503 is latched to the biasing spring latching portion 502d of the engagement hook 502, and the other end is latched to the edge portion 403ba of the left hinge portion 403b. Thereby, the engagement hook urging spring 503 urges the engagement hook 502 in a direction in which the engagement claw 502a of the engagement hook 502 engages with the engagement groove 501a of the rotation plate 501.
- the operating lever 504 has a bent shape, and a swing shaft 504b is provided at the refracting portion.
- the swing shaft 504b is provided on the left hinge portion 403b.
- the operation lever 504 includes a connection pin (connection portion) 504a to which an operation strap 410 for releasing the lock mechanism 500 is connected at one end thereof.
- the operation lever 504 includes an opening (engagement portion) 504c that engages with the engagement pin 502c of the engagement hook 502 at the other end.
- the inner peripheral surface of the engaging portion 504c constitutes a guide surface that guides the engaging pin 502c when the operating lever 504 swings about the swinging shaft 504b.
- the operating lever biasing spring 505 is constituted by a coil spring. One end of the operating lever biasing spring 505 is hooked on a hooking portion 403bb provided on the edge 403ba of the left hinge portion 403b, and the other end is hooked on a hooking portion 504d of the operating lever 504. .
- the operating lever biasing spring 505 biases the operating lever 504 so as to pull up the connecting pin 504a side of the operating lever 504.
- the engagement portion 504c of the operation lever 504 is in the lowered position, and the engagement claw 502a of the engagement hook 502 is engaged with the engagement groove 501a of the rotation plate 501.
- the left hinge part 403b is provided with an opening 506 for projecting the connecting pin 504a to which the operation strap 410 is connected to the surface side.
- the operation lever 504 is urged by an operation lever urging spring 505, and the connecting pin 504a side is pulled up. At this time, the operation lever 504 is restricted from swinging at a position where the connecting pin 504 a contacts the upper end of the opening 506.
- FIG. 5 is a plan view showing the structure (unlocked state) of the right hinge portion of the headrest according to one embodiment of the present invention.
- the operation strap 410 is operated. That is, the lock mechanism 500 is released by pulling the operation strap 410.
- the operation lever 504 is swung about the swing shaft 504b, and the connecting pin 504a side of the operation lever 504 is pulled down.
- the engagement portion 504c side of the operation lever 504 is raised, and the engagement claw 502a of the engagement hook 502 is guided and pulled up by the guide surface of the engagement portion 504c.
- the engaging hook 502 swings about the swinging shaft 502 b, and the engaging claw 502 a is pulled out from the engaging groove 501 a of the rotating plate 501.
- the lock mechanism 500 is released, and the headrest body 4A can be tilted. While the headrest body 4A is tilted, the operation strap 410 is not pulled, so that the front end surface of the engaging claw 502a abuts on the sliding surface 501b of the rotating plate 501, and slides on the sliding surface 501b.
- the headrest body 4A tilts until the side surface 502aa of the engaging claw 502a contacts the side surface 501ca of the protrusion 501c.
- the side surface 501ca of the protrusion 501c constitutes a restricting portion that restricts the tilting range of the headrest body 4A.
- the side surface 501aa of the engagement groove 501a constitutes a first rotation range restricting portion that restricts the rotation range of the headrest body 4A on the use position side. For this reason, the side surface 501aa of the engaging groove 501a is formed higher than the side surface 501ab.
- the side surface 501ca of the protrusion 501c constitutes a second rotation range restricting portion that restricts the tilt of the headrest body 4A on the tilt position side.
- the engagement groove 501a is provided inside the rotation range of the first rotation range restricting portion 501aa.
- the sliding surface 501b is provided between the engaging groove 501a and the second rotation range restricting portion 501ca.
- FIG. 6 is a plan view showing the structure (when locked) of the left hinge portion of the headrest according to one embodiment of the present invention.
- a simple stopper mechanism 600 is provided on the back surface of the right hinge portion 403a.
- the stopper mechanism 600 includes a stopper member 601 and a restriction portion (restriction pin) 602.
- the position (posture) of the stopper member 601 in a state where the headrest body 4A is tilted is indicated by a broken line 601a '.
- the stopper member 601 has a stopper piece 601 a and is fixed to the rotating shaft 404.
- the stopper piece 601a swings with respect to the right hinge part 403a when the headrest body 4A tilts.
- the right hinge portion 403a swings with respect to the stopper piece 601a.
- the regulating part 602 is fixed to the back surface of the right hinge part 403a.
- a gap is formed between the restriction portion 602 and the side 601aa of the stopper piece 601a, and the restriction portion 602 and the stopper piece 601a are not in contact with each other. Accordingly, the engagement between the engagement claw 502a of the engagement hook 502 and the engagement groove 501a of the rotation plate 501 can be reliably performed on the lock mechanism 500 side.
- the restricting portion 602 and the stopper piece 601a abut (engage). That is, when the headrest main body 4A is further tilted backward from the use position, the restricting portion 602 engages with the stopper member 601 (stopper piece 601a) to restrict the backward tilt range of the headrest main body 4A.
- the backward impact force acting on the headrest body 4A can be shared by the lock mechanism 500 and the stopper mechanism 600, and the support strength of the headrest body 4A can be increased.
- the headrest main body 4A is supported by the lock mechanism 500 arranged at one end in the axial direction of the rotation shaft 404, when the force acts on the headrest main body 4A, one end where the lock mechanism 500 is provided.
- the displacement amount (offset deformation) on the other end side is larger than that on the other side.
- the stopper mechanism 600 is provided on the other end side and the stopper mechanism 600 supports the headrest body 4A on the other end side, the offset deformation can be reduced.
- one lock mechanism 500 that locks the tilt of the headrest body 4A is provided. This eliminates the need to synchronize the two locking mechanisms, and does not require high component accuracy and assembly accuracy. Then, when the headrest body 4A is returned from the position tilted forward to the use position, the headrest body 4A can be reliably locked.
- a simple stopper mechanism 600 that shares the impact force is provided. Accordingly, the headrest body 4A can be stably supported at the use position even against a strong impact force.
- the stopper mechanism 600 also plays a role of regulating the tilting of the headrest body 4A.
- the stopper piece 601a assumes the posture shown by the broken line 601a 'with respect to the right hinge portion 403a.
- the portion 601ab (601ab ') of the stopper piece 601a (601a') contacts the edge 403aa of the right hinge 403a. Thereby, the tilting of the headrest body 4A is restricted, and tilting beyond the necessary tilting range is restricted.
- the stopper member 601 and the stopper piece 601a play a role of regulating the tilting of the headrest body 4A in addition to the role of sharing the backward impact force.
- the lock mechanism 500 it is possible to prevent the engagement claw 502a of the engagement hook 502 from dropping from the protrusion 501c of the rotation plate 501.
- the stopper mechanism 600 has a simpler structure than the lock mechanism 500 and has a smaller number of parts. For this reason, cost reduction and assembly time can be shortened.
- a pedestal (attachment portion) 502e for the engagement hook 502, a pedestal (attachment portion) 504e for the operation lever 504, and an opening 506 through which the connecting pin 504a is inserted are provided on the back surface of the right hinge portion 403a.
- a latching portion 403ab for latching the operation lever biasing spring 505 is provided on the edge 403aa of the right hinge portion 403a.
- ⁇ Restricting portion 602 is removed and the stopper member 601 is replaced with the rotation plate 501, and the engaging hook 502 is attached to the pedestal 502e, and the operation lever 504 is attached to the pedestal 504e. Further, an engagement hook biasing spring 503 and an operation lever biasing spring 505 are attached. Accordingly, the stopper mechanism 600 of the right hinge part 403a can be replaced with the lock mechanism 500.
- a base (attachment portion) 602e (see FIG. 4) for the restriction portion 602 is provided on the back surface of the left hinge portion 403b.
- the rotating plate 501 is replaced with the stopper member 601, and the restricting portion 602 is attached to the base 602e. Further, the engagement hook biasing spring 503 and the operation lever biasing spring 505 are removed, and the engagement hook 502 and the operation lever 504 are removed. Thereby, the lock mechanism 500 of the left hinge part 403b can be replaced with the stopper mechanism 600.
- the right hinge part 403a and the left hinge part 403b include a base 502e for the engagement hook 502, a base 504e for the operation lever 504, a base 602e for the restriction part 602, and an operation lever biasing spring.
- a latching portion 403ab for 505 and an opening 506 through which the connecting pin 504a is inserted are provided in common.
- the lock mechanism 500 and the stopper mechanism 600 can be freely selected and attached to the right hinge part 403a and the left hinge part 403b. In this way, it is not necessary to separately manufacture the hinge portion for the lock mechanism 500 and the hinge portion for the stopper mechanism 600, and the manufacturing cost can be reduced. In addition, it is possible to respond flexibly to excess and deficiency of parts.
- the lock mechanism 500 has a slight clearance between the engagement claw 502a of the engagement hook 502 and the engagement groove 501a of the rotation plate 501. For this reason, strictly speaking, the headrest main body 4A slightly rotates with respect to the stay 402 even in the locked state, thereby causing an offset deformation.
- the stopper mechanism 600 has a gap larger than the clearance between the engaging claw 502a and the engaging groove 501a between the stopper piece 601a and the restricting portion 602 in a state where the headrest body is locked at the use position. . For this reason, a larger offset deformation occurs on the stopper mechanism 600 side than on the lock mechanism 500 side. However, when the stopper piece 601a and the restricting portion 602 are engaged, it is possible to prevent further offset deformation.
- FIG. 7 is a perspective view showing an assembly in which a main body frame, a stay, a hinge portion, a rotating shaft, a connecting portion, and an urging member are assembled with respect to a headrest according to an embodiment of the present invention.
- FIG. 7 shows a state where the operation strap 410 is not assembled, the operation strap 410 is connected to the connection pin (connection portion) 504a.
- a frame member 411 for guiding the operation strap 410 is provided on the surface (the outer surface in the width direction) of the right hinge portion 403b.
- FIG. 8 is an exploded perspective view showing the headrest according to one embodiment of the present invention in an exploded manner.
- the cushion material 407a is assembled from the front side, and the cushion material 407b is assembled from the rear side.
- the operation strap 410 is assembled so as to be inserted through the inside of the frame member 411.
- the frame member 411 secures a space in which the operation strap 410 is disposed inside the cushion member, and prevents the cushion member and the operation strap 410 from rubbing.
- a lower cover (bottom cover) 408 (see FIG. 2) is attached to the assembly of the mechanism portion 400, the cushion material 407a, and the cushion material 407b from below, and the skin 409 is disposed on the cushion material 407a and the cushion material 407b from above. Cover.
- FIG. 9 is a perspective view showing the lower cover.
- the lower cover 408 has an opening 408a, an opening 408b, a recess 408c1, and a partition wall 408d.
- the lower cover 408 is made of resin.
- the openings 408 a are formed at both ends of the lower cover 408 in the width direction of the vehicle seat 1.
- the opening 408 a is for inserting the operation strap 410.
- the operation strap 410 is provided only on one side of the headrest 4 in the width direction of the vehicle seat 1.
- the operation strap 410 is provided on the left side of the headrest 4 in the left seat, and the operation strap 410 is provided on the right side of the headrest 4 in the right seat.
- openings 408a are provided at both ends of the lower cover 408 so that the operation strap 410 may be provided on either side.
- the opening 408b is for inserting the right stay portion 402a and the left stay portion 402b. Therefore, two openings 408b are provided so as to be separated from each other in the width direction.
- the opening 408b is provided inside the opening 408a. That is, the opening 408b is located closer to the center of the lower cover 408 than the opening 408a.
- the front-rear dimension of the opening 408b is a size that does not interfere with the right stay 402a and the left stay 402b between the use position and the tilt position of the headrest body 4A. Further, the width direction dimension is slightly larger than the thickness of the right stay part 402a and the left stay part 402b.
- the recess 408c1 is formed in a shape that is recessed from the rear side toward the front side between the left side opening forming part 408e1 and the right side opening forming part 408e2 in which the opening 408a and the opening 408b are formed. That is, it is formed at the center of the lower cover 408 in the width direction.
- the partition 408d is provided around the opening 408b.
- the partition wall 408d is provided along the edge on the right hinge part 403a and the left hinge part 403b in particular.
- FIG. 10 is a perspective view showing a state in which the lower cover is assembled to the mechanism assembly.
- the lower cover 408 is assembled to the headrest 4 by inserting the right stay 402a and the left stay 402b into the two openings 408b.
- the recess 408c2 is also formed on the front side facing the recess 408c1.
- the recess 408c2 is formed between the left opening formation portion 408e1 and the right opening formation portion 408e2 so as to be recessed from the front side toward the rear side.
- the lower cover 408 has a shape in which the left opening forming portion 408e1 and the right opening forming portion 408e2 are connected by the thin connecting portion 408f.
- a lock mechanism 500 or a stopper mechanism 600 is provided on each back side of the right hinge part 403a and the left hinge part 403b. If the user touches the headrest body 4 when tilting the headrest 4, the user's finger may enter the headrest body 4 and touch the lock mechanism 500 or the stopper mechanism 600.
- the rotation shaft 404 is disposed close to the lower end of the headrest body 4A.
- the stay 402 the cushion material 407, and the skin material 409 can be configured not to interfere with each other.
- the rotation shaft 404 is disposed close to the lower end portion of the headrest body 4A, the movable parts of the lock mechanism 500 and the stopper mechanism 600 are also disposed close to the lower end portion of the headrest body 4A. In this case, the user's finger can easily reach the lock mechanism 500 and the stopper mechanism 600.
- FIG. 13 is a perspective view of a headrest, which is a comparative example with the present invention, as viewed from the lower surface side.
- the comparative example is different from the present embodiment in that the lower cover 408 is not provided.
- the structure in which the mechanism assembly 400 is directly covered with the cushioning material 407 and further covered with the skin material 409 is the same as that of the present embodiment.
- the structure assembly 400 is directly covered with the cushioning material 407 and further covered with the skin material 409, and only the lower part of the headrest body 4A is covered with the resin lower cover 408.
- the lower cover 408 covers the vicinity of the hinge portion 403 while leaving a minimum opening around the right stay portion 402a and the left stay portion 402b. This prevents the user's finger from touching the lock mechanism 500 and the stopper mechanism 600 by mistake.
- the structure assembly 400 is directly covered with the cushioning material 407, and a cover part such as a resin covering the structure assembly 400 is not provided. For this reason, the number of parts can be reduced and the headrest can be downsized.
- the partition wall 408d is provided along the edge of the opening 408b on the hinge part 403 side, thereby preventing the user's finger from touching the lock mechanism 500 and the stopper mechanism 600 by mistake.
- the rotation plate 501 and the stopper piece 601a of the stopper member 601 are in contact with the edge 403aa of the right hinge part 403a and the edge 403ba of the left hinge part 403b.
- the partition 408d can reliably prevent the partition 408d from being inserted between the rotation plate 501 and the stopper piece 601a and the edge 403aa of the right hinge part 403a and the edge 403ba of the left hinge part 403b.
- FIG. 11 is a perspective view of the left hinge portion as viewed from the front side.
- FIG. 11 is a view of the portion XI in FIG. 10 viewed from a different angle.
- the operation strap 410 is connected to the connecting pin 504a.
- the operation strap 410 is inserted through the opening 408 a of the lower cover 408.
- the connection portion of the operation strap 410 connected to the connection pin 504a can be reliably pulled down.
- the connecting pin 504a is pulled downward in the opening 506, and the operation lever 504 is correctly operated.
- the connecting pin 504a when an operating force is applied to the connecting pin 504a of the operating lever 504 in the circumferential direction around the swing shaft 504b, the connecting pin 504a operates smoothly. Even if an operating force from the connecting pin 504a toward the swing shaft 504b or an operating force in the opposite direction is applied to the connecting pin 504a, the connecting pin 504a does not operate smoothly.
- an operating force can be applied to the connecting pin 504a in the circumferential direction around the swing shaft 504b.
- the opening 408a of the lower cover 408 is arranged so that the operating force by the operation strap 410 acts in the circumferential direction around the swing shaft 504b with respect to the connecting pin 504a between the opening 408a and the connecting pin 504a.
- the operation strap 410 is guided.
- the lower cover 408 also functions as a guide member for guiding the operation strap 410 in the correct operation direction.
- FIG. 12 is a cross-sectional view showing an assembled state of the lower cover and the skin material.
- the skin material 409 covers the cushion material 407, and a hook 409A sewn on the lower end is hooked to the lower cover 408 through the opening 408a.
- the lower cover 408 also serves as a hooking member for the skin material 409.
- each stay part 404 ... Rotating shaft (tilting axis), 405 ... Connecting part, 405a ... Right connecting part, 405b ... Left side connecting portion, 406 ... Biasing member, 407 ... Cushion material, 408 ... Lower cover (bottom cover), 4 8a ... opening, 408b ... opening 408b, 408c ... recessed portion, 408c1 ... recessed portion, 408c2 ... recessed portion, 408d ... partition wall, 408e1 ... left opening forming portion, 408e2 ... right opening forming portion, 408f ... connecting portion, 409 ... skin, 410 ... Operation strap, 411 ... frame member, 500 ...
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
部材である。
Claims (10)
- シートバック側に保持されるステーと、前記ステーに対して使用位置から前方に回動可能に支持されたヘッドレスト本体とを備え、前記ヘッドレスト本体は、強度部材を成す本体フレームと、前記本体フレームを前記ステーに対して回動可能に連結するヒンジ部と、前記本体フレームを前記ステーに対して使用位置で固定するロック機構と、前記本体フレーム及び前記ヒンジ部を被覆するクッション材とを有する車両用シートのヘッドレストにおいて、
前記ステーが挿通する開口を有する樹脂製の下部カバーで前記ヘッドレスト本体の下面を被覆したことを特徴とする車両用シートのヘッドレスト。 - 請求項1に記載の車両用シートのヘッドレストにおいて、
前記ステーは、前記ヘッドレスト本体の右側から下方に延設された右側ステー部と、前記ヘッドレスト本体の左側から下方に延設された左側ステー部とを有し、
前記下部カバーは、前記右側ステー部が挿通する第一の開口を有する右側開口形成部と、前記左側ステー部が挿通する第二の開口を有する左側開口形成部とを有することを特徴とする車両用シートのヘッドレスト。 - 請求項2に記載の車両用シートのヘッドレストにおいて、
前記ヒンジ部は前記本体フレームの右側に配置された右側ヒンジ部と前記本体フレームの左側に配置された左側ヒンジ部とを有し、
前記右側ヒンジ部又は前記左側ヒンジ部の少なくともいずれか一方に、前記ロック機構を構成したことを特徴とする車両用シートのヘッドレスト。 - 請求項3に記載の車両用シートのヘッドレストにおいて、
前記下部カバーは、前記右側開口形成部と前記左側開口形成部とを連結する連結部に後側から前方に向けて形成した凹部を有することを特徴とする車両用シートのヘッドレスト。 - 請求項4に記載の車両用シートのヘッドレストにおいて、
前記下部カバーは、前記右側開口形成部又は前記左側開口形成部の少なくともいずれか一方に、前記ロック機構の解除操作を行う操作ストラップを挿通する第三の開口を有し、
前記第三の開口は、前記第一の開口又は前記第二の開口に対して、外側に配置されていることを特徴とする車両用シートのヘッドレスト。 - 請求項5に記載の車両用シートのヘッドレストにおいて、
前記クッション材を被覆する表皮材を備え、
前記表皮材の下端部が前記第三の開口に掛け止められていることを特徴とする車両用シートのヘッドレスト。 - 請求項6に記載の車両用シートのヘッドレストにおいて、
前記右側ヒンジ部又は前記左側ヒンジ部のいずれか一方に前記ロック機構が設けられ、他方にストッパ機構が設けられ、
前記ストッパ機構は、使用位置では規制部に係合せず、前記ヘッドレスト本体が前記使用位置から後傾する場合に規制部と係合して前記ヘッドレスト本体の後傾を規制するように構成されたことを特徴とする車両用シートのヘッドレスト。 - 請求項7に記載の車両用シートのヘッドレストにおいて、
前記ステーに固定されると共に、前記右側ヒンジ部と前記左側ヒンジ部とに対して回動可能に連結された回動軸を有し、
前記回動軸は、前記右側ステー部と前記左側ステー部とを連結する連結ステー部よりも下方に位置することを特徴とする車両用シートのヘッドレスト。 - 請求項8に記載の車両用シートのヘッドレストにおいて、
前記ロック機構は、係合爪を有し第1の遥動軸を中心として遥動する係合フックと、前記係合爪が係合する係合溝を有し前記回動軸を中心として回動する回動プレートとを備え、
前記ストッパ機構は、第2の遥動軸を中心に遥動するストッパ片を有するストッパ部材と、前記ストッパ片が係合することにより前記ストッパ片の遥動範囲を規制する遥動範囲規制部とを備えることを特徴とする車両用シートのヘッドレスト。 - 請求項9に記載の車両用シートのヘッドレストにおいて、
前記下部カバーは、前記右側開口形成部又は前記左側開口形成部のいずれか一方に前記第三の開口を有し、他方に第四の開口を有することを特徴とする車両用シートのヘッドレスト。
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JP2017514139A JP6538829B2 (ja) | 2015-04-23 | 2016-04-19 | 車両用シートのヘッドレスト |
US15/568,279 US10272811B2 (en) | 2015-04-23 | 2016-04-19 | Vehicle seat headrest |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3315355A1 (en) * | 2016-10-26 | 2018-05-02 | Volvo Car Corporation | A vehicle seat and a head rest for a vehicle seat |
US11530044B2 (en) * | 2016-09-20 | 2022-12-20 | Safran Seats Usa Llc | Using foam for structural components of a seat assembly |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10377286B2 (en) * | 2014-04-14 | 2019-08-13 | Adient Luxembourg Holding S.À R.L. | Folding head restraint mechanism |
CN110293888B (zh) * | 2019-04-28 | 2021-03-09 | 延锋安道拓座椅有限公司 | 一种翻转头枕 |
US11938853B2 (en) * | 2021-10-26 | 2024-03-26 | GM Global Technology Operations LLC | Multi-actuator capable headrest |
US11912184B2 (en) | 2022-03-23 | 2024-02-27 | GM Global Technology Operations LLC | Cable sleeve for a foldable headrest |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7325877B2 (en) * | 2004-04-15 | 2008-02-05 | Windsor Machine & Stamping Limited | Foldable headrest assembly |
JP2010023819A (ja) * | 2008-07-22 | 2010-02-04 | Toyo Seat Co Ltd | 可倒式自動車用ヘッドレスト |
US8231177B2 (en) * | 2007-02-28 | 2012-07-31 | Lear Corporation | Folding head restraint mechanism |
JP2013132388A (ja) * | 2011-12-26 | 2013-07-08 | Namba Press Works Co Ltd | 車両シートのヘッドレスト及びその製造方法 |
JP2014156247A (ja) * | 2008-09-30 | 2014-08-28 | Ts Tech Co Ltd | ヘッドレスト |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3895468B2 (ja) * | 1998-06-13 | 2007-03-22 | 株式会社タチエス | 前倒装置付ヘッドレストの製造方法 |
JP3904736B2 (ja) * | 1998-07-24 | 2007-04-11 | 株式会社タチエス | ヘッドレスト |
US6149233A (en) * | 1999-12-21 | 2000-11-21 | Tachi-S Co., Ltd. | Headrest and method for forming the same |
JP4413727B2 (ja) | 2004-09-24 | 2010-02-10 | トヨタ紡織株式会社 | 車両用シート装置 |
US7322646B2 (en) * | 2005-11-02 | 2008-01-29 | Lear Corporation | Folding head restraint mechanism |
US7422280B2 (en) * | 2006-04-07 | 2008-09-09 | Windsor Machine & Stamping Limited | Foldable headrest assembly |
US8104836B2 (en) * | 2006-07-19 | 2012-01-31 | Windsor Machine & Stamping (2009) Ltd | Articulating headrest mechanism |
JP5252824B2 (ja) * | 2007-03-31 | 2013-07-31 | テイ・エス テック株式会社 | ヘッドレスト及び該ヘッドレストを備えた車両用シート |
JP5145858B2 (ja) * | 2007-10-22 | 2013-02-20 | トヨタ紡織株式会社 | 車両用シートのヘッドレスト |
US8616625B2 (en) * | 2008-05-23 | 2013-12-31 | Johnson Controls Technology Company | Seat headrest |
US8246116B1 (en) * | 2009-08-24 | 2012-08-21 | Sutter Jr Robert R | Head restraint assembly with sliding latch |
US8511751B2 (en) * | 2010-04-19 | 2013-08-20 | Bae Industries, Inc. | Headrest exhibiting a widthwise bar engaging side sectors in combination with a strap engaging/lift feature for permitting forward and/or rearward dump |
US8746799B2 (en) * | 2010-12-15 | 2014-06-10 | Nissan North America, Inc. | Headrest support rod |
JP5913767B2 (ja) * | 2012-05-25 | 2016-04-27 | 株式会社タチエス | ヘッドレストの干渉防止構造 |
US9573499B2 (en) * | 2014-03-18 | 2017-02-21 | Bae Industries, Inc. | Headrest dump assembly integrated into a seatback |
-
2016
- 2016-04-19 JP JP2017514139A patent/JP6538829B2/ja active Active
- 2016-04-19 US US15/568,279 patent/US10272811B2/en active Active
- 2016-04-19 WO PCT/JP2016/062396 patent/WO2016171138A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7325877B2 (en) * | 2004-04-15 | 2008-02-05 | Windsor Machine & Stamping Limited | Foldable headrest assembly |
US8231177B2 (en) * | 2007-02-28 | 2012-07-31 | Lear Corporation | Folding head restraint mechanism |
JP2010023819A (ja) * | 2008-07-22 | 2010-02-04 | Toyo Seat Co Ltd | 可倒式自動車用ヘッドレスト |
JP2014156247A (ja) * | 2008-09-30 | 2014-08-28 | Ts Tech Co Ltd | ヘッドレスト |
JP2013132388A (ja) * | 2011-12-26 | 2013-07-08 | Namba Press Works Co Ltd | 車両シートのヘッドレスト及びその製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11530044B2 (en) * | 2016-09-20 | 2022-12-20 | Safran Seats Usa Llc | Using foam for structural components of a seat assembly |
EP3315355A1 (en) * | 2016-10-26 | 2018-05-02 | Volvo Car Corporation | A vehicle seat and a head rest for a vehicle seat |
US10562427B2 (en) | 2016-10-26 | 2020-02-18 | Volvo Car Corporation | Vehicle seat and head rest for a vehicle seat |
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US20180111521A1 (en) | 2018-04-26 |
US10272811B2 (en) | 2019-04-30 |
JPWO2016171138A1 (ja) | 2018-01-11 |
JP6538829B2 (ja) | 2019-07-03 |
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