WO2023003030A1 - Amortisseur dynamique, appui-tête et siège de véhicule - Google Patents

Amortisseur dynamique, appui-tête et siège de véhicule Download PDF

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Publication number
WO2023003030A1
WO2023003030A1 PCT/JP2022/028273 JP2022028273W WO2023003030A1 WO 2023003030 A1 WO2023003030 A1 WO 2023003030A1 JP 2022028273 W JP2022028273 W JP 2022028273W WO 2023003030 A1 WO2023003030 A1 WO 2023003030A1
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WO
WIPO (PCT)
Prior art keywords
headrest
pillar
frame
connection portion
damper
Prior art date
Application number
PCT/JP2022/028273
Other languages
English (en)
Japanese (ja)
Inventor
龍三郎 阿部
迪 宗
陽一 立川
ピーター シュプスカ，
ディネシュ ハダダレ，
ジェイコブ ウィリアムズ，
ジェームズ デンリンジャー，
アンドリュー エバースバッハ，
Original Assignee
テイ・エス テック株式会社
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 テイ・エス テック株式会社 filed Critical テイ・エス テック株式会社
Priority to JP2023536786A priority Critical patent/JPWO2023003030A1/ja
Publication of WO2023003030A1 publication Critical patent/WO2023003030A1/fr

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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
    • B60N2/879—Head-rests with additional features not related to head-rest positioning, e.g. heating or cooling devices or loudspeakers

Definitions

  • the present invention relates to a dynamic damper, a headrest and a vehicle seat, and more particularly to a dynamic damper provided with a weight, and a headrest and vehicle seat provided with the dynamic damper.
  • Patent Literature 1 discloses a vehicle seat in which a headrest is provided with a dynamic damper including a weight, an elastic member for vibratingly supporting the weight, and a damper case for housing the weight and the elastic member. It is
  • the dynamic damper is connected to the headrest pillar by a connecting portion provided in the case, but the connecting portion is positioned in the vertical center of the side portion of the case.
  • the damper case includes a weight, an elastic member that supports the weight so that it can vibrate, and a damper case that houses the weight and the elastic member.
  • At least left and right side wall portions are provided with connecting portions for connecting to the headrest frame, respectively, and the connecting portions are arranged at positions that do not overlap with the central portion in the vertical direction of the damper case. be.
  • the damper case is composed of a first case half arranged in front and a second case half arranged in rear, and the damper case is arranged in the front-rear direction of the first case half. is longer than the longitudinal length of the second case half.
  • the damper case is provided with a mounting portion for mounting the elastic member supporting the weight in the damper case, and the mounting portion does not overlap the connection portion in the left-right direction. position.
  • the damper case is provided with, as the connection portions, a first connection portion provided on the left side wall portion and a second connection portion provided on the right side wall portion. Further, a third connection portion may be provided on the upper side wall portion as the connection portion, and the third connection portion may be positioned between the first connection portion and the second connection portion in the left-right direction.
  • the first connection portion and the second connection portion may be connected to the front surface of the headrest frame, and the third connection portion may be connected to the upper surface of the headrest frame.
  • the first connecting portion and the second connecting portion include a reinforcing portion that reinforces the first connecting portion and the second connecting portion at a connection portion with the side wall portion of the damper case.
  • the damper case can be stably fixed to the headrest frame by providing the reinforcing portion at the connection portion of the damper case with the side wall portion.
  • a hole may be formed in each of the first connecting portion and the second connecting portion. Forming holes in the first connection portion and the second connection portion can reduce the weight of the dynamic damper.
  • each of the first connection portion and the second connection portion is provided with a plurality of reinforcing portions in the vertical direction, and the holes are provided between the reinforcing portions that are adjacent in the vertical direction. should be located.
  • the headrest includes the dynamic damper and a headrest frame to which the connection portion of the dynamic damper is connected.
  • each of the pair of pillars includes a first extending portion extending downward from the connecting portion with the upper portion; and a lower end of the first extending portion. and a third extension bent at the rear end of the second extension and extending downward, wherein the second extension The portion may be positioned above the lower end of the damper case.
  • the damper case is provided with, as the connection portions, a first connection portion provided on the left side wall portion and a second connection portion provided on the right side wall portion.
  • the first connection portion may be connected to the first extension portion of the left pillar portion of the pair of pillar portions
  • the second connection portion may be connected to the first extension portion of the right pillar portion.
  • a vehicle seat includes the above-described headrest, a seatback having the headrest at an upper end portion and serving as a backrest for an occupant, and a seat cushion connected to the seatback and supporting the buttocks of the occupant. Good.
  • the connecting portion is arranged at a position not overlapping the central portion of the damper case, the vertical length of the attached headrest frame can be shortened, and the headrest can be made into a more compact shape.
  • the damper case is attached to the headrest frame by making the longitudinal length of the first half case arranged forward longer than the longitudinal length of the second half case arranged rearward. easier.
  • the elastic member can be stably attached by providing the attachment portion at a position that does not overlap the connection portion in the left-right direction.
  • the third connection portion located between the first connection portion and the second connection portion in the upper side wall portion is provided as the connection portion connected to the headrest frame.
  • the damper case can be stably fixed to the headrest frame while restricting movement in the vertical direction.
  • the first connection portion and the second connection portion are connected to the front surface of the headrest frame, and the third connection portion is connected to the upper surface of the headrest frame, thereby making the damper case more flexible. It can be stably fixed to the headrest frame.
  • the damper case can be stably fixed to the headrest frame by providing the reinforcing portion at the connection portion of the damper case with the side wall portion.
  • the weight of the dynamic damper can be reduced by forming the holes in the first connecting portion and the second connecting portion.
  • the dynamic damper of the present invention by arranging a plurality of reinforcement portions on each of the first connection portion and the second connection portion, the first connection portion and the second connection portion can be reinforced more stably.
  • the second extending portion is positioned above the lower end of the damper case, so that the headrest frame becomes more compact and the headrest can be miniaturized.
  • the damper case can be made more compact by connecting the first connecting portion and the second connecting portion to the first extending portion of the pillar portion.
  • the vehicle seat of the present invention it is possible to provide a vehicle seat having a more compact headrest by including the above-described headrest, seat back, and seat cushion.
  • FIG. 1 is a perspective view of a vehicle seat according to a first embodiment of the present invention as viewed obliquely from the front;
  • FIG. FIG. 2 is a perspective view of the seat frame of the vehicle seat as viewed obliquely from the front;
  • FIG. 4 is a perspective view showing a dynamic damper attached to the headrest frame;
  • FIG. 3B is a partially enlarged perspective view showing an enlarged portion IIIB of FIG. 3A, showing a connecting portion of the dynamic damper;
  • FIG. 4 is a front view showing a dynamic damper attached to the headrest frame;
  • FIG. 4 is a side view showing a dynamic damper attached to the headrest frame; It is a bottom view which shows the dynamic damper attached to the headrest frame.
  • FIG. 3B is a partially enlarged perspective view showing an enlarged portion IIIB of FIG. 3A, showing a connecting portion of the dynamic damper;
  • FIG. 4 is a front view showing a dynamic damper attached to the headrest frame;
  • FIG. 5 is a front view showing a weight attached within the dynamic damper; 1 is an exploded perspective view of a dynamic damper; FIG. FIG. 5 is a rear view showing the inside of the dynamic damper of the second embodiment; 1 is an exploded perspective view of a dynamic damper; FIG. FIG. 10 is a cross-sectional view along line XI-XI of FIG. 9; FIG. 10 is a partially enlarged cross-sectional view along line XIIA-XIIA of FIG. 9; FIG. 10 is a partially enlarged cross-sectional view taken along line XIIB-XIIB of FIG. 9; FIG. 9 is an exploded perspective view of a dynamic damper provided with another example of a weight; Fig.
  • FIG. 10 is a perspective view of a vehicle seat according to a second embodiment of the present invention, viewed obliquely from the front; It is a figure which shows the headrest of a vehicle seat, and is an exploded perspective view shown from diagonally forward.
  • FIG. 15 is a cross-sectional view of the headrest along line XVI-XVI of FIG. 14, showing the headrest in a raised state; It is the top view which looked at the headrest frame from upper direction.
  • FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. 17, showing a connecting portion between the leaf spring and the headrest frame; It is a perspective view showing a leaf spring.
  • FIG. 15 is a cross-sectional view of the headrest along line XVI-XVI of FIG. 14, showing the headrest in a raised state; It is the top view which looked at the headrest frame from upper direction.
  • FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in
  • FIG. 20 is a cross-sectional view of the leaf spring taken along line XX-XX in FIG. 19, showing a state before holding the pillar.
  • FIG. 4 is a cross-sectional view of a leaf spring showing a state in which a pillar is held;
  • FIG. 11 is a perspective view showing another example of the leaf spring;
  • FIG. 22 is a cross-sectional view of the leaf spring taken along line XXII-XXII of FIG. 21, showing the leaf spring in a state before holding a pillar;
  • FIG. 4 is a cross-sectional view of a leaf spring showing a state in which a pillar is held;
  • FIG. 18 is a cross-sectional view taken along line XXIII-XXIII of FIG. 17;
  • FIG. 18 is a cross-sectional view taken along line XXIV-XXIV of FIG. 17; FIG. 18 is a cross-sectional view along line XXV-XXV of FIG. 17; FIG. 18 is a cross-sectional view taken along line XXVI-XXVI of FIG. 17; FIG. 18 is a cross-sectional view along line XXVII-XXVII of FIG. 17, showing the positional relationship between the headrest frame and the pillar; It is a figure which shows the shape of the conventional frame opening.
  • FIG. 18 is an enlarged view of a portion D of FIG. 17, showing the frame opening of the present embodiment;
  • FIG. 4 is a flow diagram showing a method of attaching leaf springs to the headrest frame;
  • a vehicle seat will be cited as an example of a vehicle seat, and an example of its configuration will be described.
  • the present invention is not limited to vehicle seats mounted on ground vehicles having wheels, such as automobiles and railways, and may be seats mounted on aircraft, ships, etc. that move other than on the ground. good.
  • the "front-back direction” is the front-back direction of the vehicle seat, and is the direction that coincides with the traveling direction of the vehicle when the vehicle is running.
  • the “seat width direction” is the width direction of the vehicle seat, and is the direction that coincides with the left-right direction viewed from the occupant seated on the vehicle seat.
  • the “vertical direction” is the vertical direction of the vehicle seat, and is a direction that substantially coincides with the vertical direction when the vehicle is traveling on a horizontal plane.
  • the “vertical direction” of the headrest is the vertical direction when the seat back of the vehicle seat is placed in a state in which the passenger can sit on it, in other words, the seat back attached to the seat back. This direction substantially coincides with the extending direction of the .
  • FIG. 1 is a perspective view of a vehicle seat S as seen obliquely from the front.
  • a part of the vehicle seat S is shown without a trim cover T (also called a skin) for convenience of illustration.
  • the vehicle seat S is a seat that is placed on the floor of the vehicle body and on which the passenger of the vehicle sits.
  • the vehicle seat S is used as a front seat corresponding to a front seat of a vehicle.
  • the vehicle seat S is not limited to this, and may be a rear seat of the vehicle. It can also be used as a rear seat.
  • the vehicle seat S includes a seat back 1 serving as a backrest portion supporting the back of a seated person, a seat cushion 2 serving as a seating portion supporting the buttocks of the seated person, and an upper end portion of the seat back 1. and a headrest 3 arranged to support the head of a seated person.
  • the seat back 1 is configured by arranging a cushion pad P on a seat back frame 10 and covering the cushion pad P with a trim cover T. - ⁇ The seat cushion 2 is connected at its rear end to the lower end of the seat back 1 .
  • the seat cushion 2 is constructed by placing a cushion pad P on a seat cushion frame 20 and covering it with a trim cover T.
  • the seat back 1 and the seat cushion 2 are connected to each other with a reclining mechanism 7 (see FIG. 2) interposed therebetween.
  • the tilt angle of the seat back 1 can be adjusted by the reclining mechanism 7 .
  • a reclining cover 28 is provided on the side of the seat cushion 2 to protect the reclining mechanism 7 and the like.
  • the seat back 1 and the seat cushion 2 may be collectively called the seat body Sh.
  • a seat frame F (frame) is provided in the vehicle seat S.
  • the seat frame F mainly includes a seat back frame 10 forming the skeleton of the seat back 1 and a seat cushion frame forming the skeleton of the seat cushion 2. 20 and a headrest frame 30 forming the skeleton of the headrest 3 .
  • the seat back frame 10 is formed in a rectangular frame shape as a whole and includes an upper frame 11 , a lower frame 12 and a pair of back side frames 13 , 13 . Further, each member constituting the seatback frame 10 is formed by pressing a steel plate.
  • the pair of back side frames 13, 13 are spaced apart in the seat width direction (lateral direction).
  • the upper frame 11 is arranged between the pair of back side frames 13 and 13 and connects the upper ends of the back side frames 13 and 13 .
  • the lower frame 12 is arranged between the pair of backside frames 13 and 13 and connects the lower ends of the pair of backside frames 13 and 13 .
  • the seat cushion frame 20 is formed in the shape of a square frame, and a pair of cushion side frames 21, 21 are provided on the sides thereof. It also has a front connecting frame 22 that connects the pair of cushion side frames 21, 21 at the front, and a rear connecting frame 23 that connects the pair at the rear.
  • a front connecting frame 22 and a rear connecting frame 23 in front and rear of the vehicle seat S are made of round pipes.
  • a cushion pan frame 24 is provided in front of the front connecting frame 22 .
  • An S spring (not shown) or the like is attached to bridge the cushion pan frame 24 and the rear connection frame 23, and the S spring serves as a pressure receiving member to support the buttocks of the seated occupant from below.
  • the headrest 3 is attached to the upper end of the seat back 1 so as to support the head of the seated person.
  • a headrest frame 30 forming a skeleton of the headrest 3 is provided as shown in FIG.
  • the headrest frame 30 has a pair of left and right pillar portions 31, 31 (called headrest pillars or headrest stays) and an upper portion 32 connected to upper ends of the pair of pillar portions 31, 31, respectively.
  • the headrest 3 is attached to the seatback frame 10 by inserting the lower ends of the pillar portions 31 and 31 into the headrest guide 14 attached to the upper frame 11 of the seatback frame 10 .
  • a dynamic damper 40 is attached to the headrest frame 30 .
  • the headrest frame 30 is formed by bending a metal pipe material multiple times.
  • Each of the pair of pillar portions 31, 31 includes first extending portions 31a, 31a extending downward from a connecting portion with the upper portion 32, and bending at the lower ends of the first extending portions 31a, 31a and extending rearward. It has second extensions 31b, 31b and third extensions 31c, 31c that bend at the rear ends of the second extensions 31b, 31b and extend downward. More precisely, the second extending portions 31b, 31b extend in such a way that their rear ends spread outward in a V-shape when viewed from above.
  • the dynamic damper 40 is attached using the upper portion 32 and the first extending portions 31 a of the pair of pillar portions 31 , 31 .
  • a seat back 1 , a seat cushion 2 and a headrest 3 are configured by providing a cushion pad P and a trim cover T outside the seat back frame 10 , the seat cushion frame 20 and the headrest frame 30 .
  • the cushion pad P has a cushion portion formed of foam, and the cushion portion is covered with a trim cover T.
  • the cushion pad P is a urethane base material formed by foam molding using, for example, a urethane foam material.
  • foam examples include polypropylene bead foam, polyethylene bead foam, polypropylene foam, polyethylene foam, acrylonitrile/styrene foam, ethylene-vinyl acetate copolymer resin, urethane foam material, or a combination thereof.
  • the trim cover T is made of, for example, cloth, film, cloth, leather, sheet, or the like, and is attached so as to cover the cushion pad P while being stretched with a predetermined tension.
  • a slide mechanism 4 is installed below the vehicle seat S as shown in FIG.
  • the slide mechanism 4 allows the seat body Sh of the vehicle seat S to be attached to the vehicle body floor in a slidable state in the front-rear direction.
  • the slide mechanism 4 is a device for sliding the vehicle seat S along the longitudinal direction, and has a known structure (structure of a general slide mechanism).
  • the slide mechanism 4 has a lower rail 26 fixed on the vehicle body floor and an upper rail 27 that supports the seat body Sh and is slidable relative to the lower rail 26 .
  • FIG. 3A is a diagram showing the dynamic damper 40 attached to the headrest frame 30, and is a perspective view seen obliquely from the front.
  • FIG. 3B is a view showing the connecting portion 50 that connects the damper case 41 of the dynamic damper 40 and the headrest frame 30, and is an enlarged perspective view of the portion IIIB of FIG. 3A.
  • 4 is a front view of the dynamic damper 40 viewed from the front
  • FIG. 5 is a side view of the dynamic damper 40 viewed from the left side
  • FIG. 6 is a bottom view of the dynamic damper 40 attached to the headrest frame 30. It is a bottom view.
  • 7 is a front view showing the weight 60 provided inside the dynamic damper 40
  • FIG. 8 is an exploded perspective view of the dynamic damper 40. As shown in FIG.
  • vibration transmitted from the vehicle body to the vehicle seat S is transmitted to the dynamic damper 40 and resonated, thereby damping the vibration of the vehicle seat S. can be suppressed.
  • the dynamic damper 40 includes a weight 60 inside, an elastic member 61 covering the weight 60, and a damper case 41 housing the weight 60 and the elastic member 61. .
  • the weight 60 is elastically supported by the damper case 41 through an elastic member 61 so as to be able to vibrate.
  • the weight 60 is made of metal (for example, cast iron) and is formed in a substantially spherical shape in this embodiment.
  • the elastic member 61 that elastically supports the weight 60 is composed of two sheet-shaped rectangular members, and holds the weight 60 by sandwiching the weight 60 from the front and rear.
  • the elastic member 61 is supported in the damper case 41 by two mounting portions 48 extending in the front-rear direction from the first case half 42 .
  • the elastic member 61 is formed with through-holes on the left and right sides thereof, and the elastic member 61 can be easily mounted inside the damper case 41 by inserting the mounting portion 48 into the through-holes.
  • Each of the two elastic members 61 is made of a urethane foam material or a rubber material having a desired thickness. Desirably, it is made of a sheet-like elastic material that is softer than the cushion pad P.
  • the damper case 41 is divided into two parts in the front-rear direction, and is composed of a first case half body 42 arranged on the front side and a second case half body 43 arranged on the rear side.
  • the first case half 42 and the second case half 43 are each made of synthetic resin.
  • the longitudinal length L1 of the first case half 42 is longer than the longitudinal length L2 of the second case half 43 (see FIG. 5). By lengthening the length L1 of the first case half 42, the elastic member 61 can be accommodated inside the first case half 42. As shown in FIG.
  • first case half 42 can be provided with a connecting portion 50 that connects to the headrest frame 30 , making it easier to attach the damper case 41 to the headrest frame 30 . Also, in a state where the first case half 42 is attached to the headrest frame 30, the second case half 43 is removed, and the elastic member 61 for holding the weight 60 is attached and the accommodated elastic member 61 is removed. be able to.
  • a rectangular fitting groove 44 and a fitting projecting wall 45 that can be fitted to each other are formed on one and the other of the facing surfaces of the second case half 43, respectively.
  • the elastic members 61 are attached to the attachment portion 48 of the first case half 42 .
  • the openings of the second case half 43 are aligned, and the fitting projecting wall 45 of the second case half 43 is fitted into the fitting groove 44 of the first case half 42 .
  • the first case half 42 and the second case half 43 can be easily connected without using screws by engaging the fixing claws 46, 46, .
  • the weight 60 can be supported by the damper case 41 via the elastic member 61 .
  • connection portion 50 connected to the headrest frame 30 is formed by left and right side wall portions (left side wall portion 41 a and right side wall portion 41 b ) and an upper side wall portion (upper side wall portion 41 c ) of the damper case 41 . are provided in each of the Among the connecting portions 50 , the connecting portions (the first connecting portion 51 and the second connecting portion 52 ) provided on the left and right side wall portions are arranged at positions that do not overlap the central portion of the damper case 41 in the vertical direction.
  • first connection portion 51 provided on the left side wall portion (left side wall portion 41a) and the second connection portion 52 provided on the right side wall portion (right side wall portion 41b) are connected to the damper case 41. It is arranged above the central portion in the vertical direction.
  • connection portion 50 a third connection portion 53 connected to the upper portion 32 of the headrest frame 30 is provided on the upper side wall portion (upper side wall portion 41 c ).
  • the connecting portion 50 is not provided on the side wall portion on the lower side of the damper case 41 .
  • the first connecting portion 51 , the second connecting portion 52 and the third connecting portion 53 are formed integrally with the first case half 42 .
  • the damper case 41 Since the upper portion of the damper case 41 is supported by the headrest frame 30 by the connecting portion 50, the damper case 41 can be extended downward. Since the damper case 41 does not extend upward and the headrest 3 does not protrude upward, the headrest 3 can be made more compact.
  • the first connecting portion 51 is formed of a plate-like member formed in an S shape when viewed from above so as to protrude outward from the left side wall portion 41a.
  • the first connecting portion 51 is composed of a connecting portion 51a and a grip portion 51b.
  • the connecting portion 51a is formed in an L shape when viewed from above, and has a root portion connected to the first case half 42 to connect the grip portion 51b and the left side wall portion 41a of the first case half 42 .
  • the gripping portion 51b is formed in a major arc shape at the distal end of the first connecting portion 51 so as to snap-engage with the first extending portion 31a of the headrest frame 30 so as to grip the first extending portion 31a. Further, as shown in FIG. 3A , the grip portion 51b is connected to the front surface of the headrest frame 30 .
  • the second connection portion 52 is formed of a plate-like member formed in an S shape when viewed from above so as to protrude outward from the right side wall portion 41b.
  • the second connecting portion 52 is composed of a connecting portion 52a and a grip portion 52b.
  • the connecting portion 52a is formed in an L shape when viewed from above, and has a root portion connected to the first case half 42 to connect the grip portion 52b and the right side wall portion 41b of the first case half 42 .
  • the gripping portion 52b is formed in an arcuate shape at the distal end of the second connecting portion 52 so as to snap-engage the first extending portion 31a of the headrest frame 30 so as to grip the gripping portion 52b.
  • the grip portion 52b is connected to the front side surface of the headrest frame 30 .
  • the third connecting portion 53 is formed in an inverted U shape in a side view so as to protrude outward from the upper side wall portion 41c.
  • the third connecting portion 53 is composed of a connecting portion 53a and a grip portion 53b.
  • the connecting portion 53 a connects the grip portion 53 b and the upper side wall portion 41 c of the first case half 42 .
  • the gripping portion 53b is formed in an arcuate shape at the distal end of the third connecting portion 53 so as to snap-engage with the upper portion 32 of the headrest frame 30 so as to grip the gripping portion 53b.
  • the grip portion 53b is connected to the upper surface of the headrest frame 30 .
  • the third connection portion 53 is positioned between the first connection portion 51 and the second connection portion 52 in the left-right direction.
  • the vertical movement of the damper case 41 can be restricted by the third connecting portion 53 .
  • the first connection portion 51 and the second connection portion 52 have reinforcing portions 56 at the connecting portions 51a and 52a.
  • the reinforcing portion 56 is composed of an upper reinforcing portion 56a arranged on the upper side and a lower reinforcing portion 56b arranged on the lower side of the connecting portions 51a and 52a. In this embodiment, it is reinforced by two vertically arranged reinforcing portions 56, but the number of reinforcing portions 56 may be one, or three or more.
  • a through hole 58 is formed in each of the grip portion 51b of the first connection portion 51 and the grip portion 52b of the second connection portion 52 .
  • the through-holes 58 are positioned between adjacent reinforcing portions 56 among the plurality of reinforcing portions 56 provided in the vertical direction.
  • the through hole 58 is positioned between the upper reinforcing portion 56a and the lower reinforcing portion 56b in the vertical direction.
  • a notch 57 extending in the front-rear direction is formed in each of the upper reinforcing portion 56a and the lower reinforcing portion 56b.
  • the weight can be reduced. Further, by forming the through hole 58 and the notch 57 in the first connecting portion 51 and the second connecting portion 52, the first connecting portion 51 and the second connecting portion 52 move more elastically, and the dynamic damper 40 can be easily attached to the headrest frame 30.
  • a mounting portion 48 for mounting an elastic member 61 supporting a weight 60 is provided so as to extend rearward from the front wall portion of the first case half 42 as shown in FIG.
  • the mounting portion 48 is formed in an elongated cylindrical shape, and the elastic member 61 can be mounted inside the damper case 41 by inserting the mounting portion 48 into a mounting hole formed in the elastic member 61 .
  • the attachment portion 48 is provided at a position that does not overlap the first connection portion 51 and the second connection portion 52 in the left-right direction.
  • the elastic member 61 can be stably attached by providing the attachment portion 48 at a position that does not overlap in the left-right direction.
  • the headrest frame 30 is formed by bending a metal pipe material a plurality of times. Second extending portions 31b, 31b are provided that are bent at and extend rearward. In other words, the headrest frame 30 is formed in an S shape when viewed from the side, and is formed to have an approximately inverted U shape when viewed from the front.
  • the second extensions 31b, 31b are formed to be positioned above the lower end of the damper case 41, as shown in FIGS. In other words, the damper case 41 can be attached so that its lower end is below the second extensions 31b, 31b.
  • the first connection portion 51 is connected to the first extension portion 31a of the left pillar portion 31 of the pair of pillar portions 31, 31, and the second connection portion 52 is connected to the first extension portion 31a of the right pillar portion 31. It is connected to the outlet 31a.
  • FIG. 9 is a rear view showing the dynamic damper 40A to which the weight 60A is attached
  • FIG. 10 is an exploded perspective view of the dynamic damper 40A.
  • 11 is a cross-sectional view along line XI-XI in FIG. 9
  • FIG. 12A is a partially enlarged cross-sectional view along line XIIA-XIIA in FIG. 9
  • FIG. 13 is an exploded perspective view of a dynamic damper provided with another example of a weight.
  • the dynamic damper 40A differs from the dynamic damper 40 of the first embodiment in the configuration of the weight 60A and the elastic member 61A and the structure for mounting them in the damper case 41. Since the outer shape of the damper case 41 and the connection portion 50 that connects the damper case 41 to the headrest frame 30 are the same as those of the first embodiment, the same reference numerals are used for the parts corresponding to those of the first embodiment. to omit redundant description.
  • the weight 60A mounted on the dynamic damper 40A is made of metal (for example, cast iron) and has the shape of a vertically elongated quadrangular prism with rounded corners.
  • Elastic members 61A, 61A for vibratingly supporting the weight 60A are attached to upper and lower ends of the weight 60A, respectively.
  • the elastic member 61A has a support portion 62A that supports the weight 60A so as to grip it, and a joint portion 63A that extends from the support portion 62A and joins the fitting portion 49 of the damper case 41 .
  • the support portion 62A and the joint portion 63A are integrally formed.
  • the support portion 62A covers the upper end or the lower end of the weight 60A and is fixed with an adhesive or the like. Bonding may be performed, for example, by vulcanization bonding in which heat and pressure are applied to the bonding portion.
  • a confirmation hole 64 is formed at a position corresponding to a part of the support portion 62A, more specifically, a corner portion of the weight 60A. The operator can confirm whether or not the weight 60A is properly inserted into the support portion 62A by visually recognizing the corner of the weight 60A through the confirmation hole 64.
  • the joint portion 63A is formed in a T shape when viewed from the side, and is composed of a plate-like portion 65 and a shaft portion 66 extending vertically from the center thereof.
  • the shaft portion 66 By bending the shaft portion 66 in the front, rear, left, and right directions, it can be supported so as to vibrate. Further, the weight 60A is fixed inside the damper case 41 by fitting the plate-like portion 65 into the fitting portion 49 of the damper case 41 .
  • the first case half 42 of the damper case 41 is provided with a fitting portion 49 for attaching the elastic member 61A that supports the weight 60A.
  • the fitting portion 49 has an opening 49d into which the plate-like portion 65 of the joint portion 63B is fitted, and a slit 49c through which the shaft portion 66 passes.
  • Two first ribs 49a are provided in the opening 49d of the fitting portion 49 to support the inserted plate-like portion 65. As shown in FIG.
  • the second case half 43 also has a second rib 49b extending forward from the rear surface of the second case half 43. are supported from the front and the outside.
  • the damper case 41 With the first rib 49a and the second rib 49b, it is possible to restrict movement of the joint portion 63B in the front-rear direction and the height direction (vertical direction).
  • the first rib 49a is formed with an inclined surface in which the end of the first rib 49a on the side of the opening 49d becomes lower in height toward the opening 49d. The vertical movement of the elastic member 61A is suppressed by the first rib 49a, and the elastic member 61A can be firmly fixed.
  • the first rib 49a is formed with an inclined surface, even if there is some error in the size of the plate-like portion 65 of the joint portion 63A, particularly in the thickness, it can be inserted into the fitting portion 49 without play. It can be fitted without sticking.
  • the weight 60A is formed as a square column with rounded corners, the shape of the weight 60A is not limited to this.
  • the weight 60B is oscillatably supported by the elastic member 61B.
  • the elastic member 61B is composed of a support portion 62B that holds the weight 60B and a joint portion 63B that supports the support portion 62B.
  • the joint portion 63 ⁇ /b>B has a plate-like portion 65 and a shaft portion 66 extending from the center of the plate-like portion 65 .
  • FIG. 1 A second embodiment of the present invention will be described below with reference to FIGS. 14 to 30.
  • FIG. The second embodiment relates to a headrest and a vehicle seat, and more particularly to a rotatable "waterfall" shaped headrest and a vehicle seat including the headrest.
  • a vehicle seat will be cited as an example of a vehicle seat, and a configuration example thereof will be described.
  • the vehicle seat described below is an example for facilitating understanding of the present invention, and does not limit the present invention. That is, the present invention can be modified and improved without departing from its spirit, and the present invention includes equivalents thereof. Moreover, it can be applied not only to vehicle seats, but also to all transportation seats including bus seats, train seats, aircraft seats, and the like.
  • the "front-back direction” is the front-back direction of the vehicle seat, and is the direction that coincides with the traveling direction of the vehicle when the vehicle is running.
  • the “seat width direction” is the width direction of the vehicle seat, and is the direction that coincides with the left-right direction viewed from the occupant seated on the vehicle seat.
  • the “vertical direction” is the vertical direction of the vehicle seat, and is a direction that substantially coincides with the vertical direction when the vehicle is traveling on a horizontal plane.
  • the “vertical direction” of the headrest is the vertical direction when the seat back of the vehicle seat is placed in a state in which the passenger can sit on it, in other words, the seat back attached to the seat back. This direction substantially coincides with the extending direction of the .
  • Vehicle seats also include systems for restraining the head, such as movable or adjustable headrests, in particular vertically slidable headrests that can be moved into an inoperative or stowed position, in particular pivotable ". It has a headrest shaped like a waterfall. Such a seat is a continuously positionable tilting headrest, which can be moved into a non-operating or stowed position, particularly for rear seats.
  • movable or adjustable headrests in particular vertically slidable headrests that can be moved into an inoperative or stowed position, in particular pivotable ". It has a headrest shaped like a waterfall.
  • Such a seat is a continuously positionable tilting headrest, which can be moved into a non-operating or stowed position, particularly for rear seats.
  • FIG. 14 is a perspective view of the vehicle seat S100 viewed obliquely from the front.
  • the trim covers 101b to 103b also called skins
  • FIG. 14 for convenience of illustration, the trim covers 101b to 103b (also called skins) are removed from a portion of the vehicle seat S100. shown in the configuration.
  • the vehicle seat S100 is a seat that is placed on the floor of the vehicle body and on which the passenger of the vehicle sits.
  • the vehicle seat S100 is used as a rear seat corresponding to a rear seat of a vehicle having two rows of seats.
  • the vehicle seat S100 is not limited to this. It can also be used as a rear seat.
  • the vehicle seat S100 includes a seat body having a seat back 101, a seat cushion 102, and a headrest 103.
  • the vehicle seat S100 includes a base member 104 that supports the seat body from below, and a reclining mechanism 105 that rotatably connects the seat back 101 to the base member 104 and locks the rotation of the seat back 101.
  • the vehicle seat S100 is also provided with a slide mechanism 106 which is attached between the vehicle body floor and the base member 104, supports the seat body movably in the longitudinal direction, and can lock the movement of the seat body.
  • the seat back 101 is a backrest portion that supports the back of the occupant from behind, and includes a back frame (not shown) serving as a skeleton, a pad material 101a placed on the back frame, and a trim cover 101b covering the pad material 101a. It consists of A lever 105 a for operating the reclining mechanism 105 is provided on the shoulder of the seat back 101 .
  • the seat cushion 102 is a seating portion that supports an occupant from below, and is composed of a cushion frame (not shown) serving as a skeleton, a pad material 102a placed on the cushion frame, and a trim cover 102b covering the pad material 102a. It is configured.
  • the headrest 103 is a head that supports the occupant's head from behind, and is a movable and adjustable headrest. In particular, it is vertically slidable and can be moved into an inactive or stowed position. It is also a tilting headrest that can be continuously positioned.
  • the headrest 103 includes a headrest frame 130 as a core material, pillars 140 for attaching the headrest frame 130 to the seat back 101, pad material 103a placed on the headrest frame 130, and pad material 103a. It is composed of a trim cover 103b for covering.
  • the headrest frame 130 is made of resin, but it may be made of metal.
  • the vehicle seat S100 employs a swingable headrest 103 in the shape of a "waterfall” that protrudes forward from the vehicle seat S100 and hangs down.
  • a structure of the headrest 103 when fully lowered, creates a "waterfall” shape in the seat back 101, which can improve driver's visibility by reducing obstruction to the rear window.
  • the angle of the occupant's torso shifts and the occupant feels uncomfortable, indicating that the headrest 103 is not in a safe position.
  • the upper end of the headrest frame 130 and the pillar 140 are connected via a leaf spring 150, and are rotatable in the front-rear direction (the direction of the double arrow C in FIG. 16). is provided above the seat back 101 . Accordingly, when the headrest 103 is raised, the headrest 103 rotates rearward from the state indicated by the dotted line in FIG. 16, and the lower end of the headrest 103 is positioned rearward. While this is useful, it is not required. However, by rotating the headrest 103 rearward, the headrest 103 does not protrude forward and intrusion into the natural seating position is reduced, thereby providing a more comfortable seating position for the occupant.
  • a first example of this embodiment will be described.
  • a feature of the first embodiment is to accommodate tolerance variations while maintaining consistent force application to control the force required to pivot the headrest and dampen the rattle sound. It is related to the leaf spring 150 which does. Such a leaf spring 150 is applied to the headrest 103 and the vehicle seat S100 including the headrest 103 .
  • a feature of the first embodiment is that, as shown in FIGS. 19 and 20, a leaf spring 150 is introduced into the rotatably retaining portion of the pillar 140 to control the force and slack in the retaining portion. is realized by fingers 153 which provide the force acting on the .
  • the rotatable headrest 103 is provided with a metal integral pillar 140 formed in a tubular shape.
  • the pillar 140 is formed to have an inverted U shape when viewed from the front and an inverted L shape when viewed from the side.
  • the pillar 140 is composed of two vertical portions 141 and a lateral portion 142 extending linearly in the lateral direction through a bend. In other words, vertical portion 141 of pillar 140 is connected to straight lateral portion 142 via a bent tube structure.
  • the pillar 140 is connected to the seatback 101 via a vertical portion 141 of the pillar 140 as shown in FIG.
  • the rotating headrest 103 is configured so that the headrest frame 130 can rotate around the pillars with the lateral portion 142 as the axis.
  • a pillar 140 designed in this way uses a generally cylindrical leaf spring 150 that connects the pillar 140 to the frame structure of the headrest 103 while allowing the headrest frame 130 to pivot about the pillar. This pivoting motion of the headrest 103 is useful for the user because it enhances the comfort of the passenger when seated.
  • the force applied to the rotation of the headrest 103 can be controlled by appropriately setting the contact surface between the leaf spring 150 and the rotating pillar 140 .
  • the manufacturing cost is high because the variation of parts is strictly controlled. Therefore, in the present embodiment, by separating the turning function and the force (torque) applied to the pillar 140 by the plate spring 150, a design that is resistant to dimensional variations is achieved.
  • Beneficial effects include: 1. A tolerance absorption function is provided to control the operating force. 2. Providing a spring member adds robustness to noise.
  • a tolerance absorbing function is provided as a finger-like portion 153 on a portion of the leaf spring 150 and is configured to act on a rotating cylindrical portion of the leaf spring 150 (pillar holding portion 152).
  • the tolerance absorption feature applies a known force to the pillar 140 to generate a torque that resists pivoting motion. This is the operating force required to rotate the headrest 103 .
  • This tolerance absorption function enables robust design control over part-to-part variations without significantly affecting operating labor and manufacturing costs.
  • the tip portion 153a itself of the finger-like portion 153 which has a tolerance absorbing function, is bent away from the pillar 140 to prevent sharp edges from coming into contact with the pillar 140. This reduces the risk of introducing new noise and durability issues associated with the movement of the leaf springs 150 around the pillars.
  • leaf spring 150 The configuration of leaf spring 150 will be described with reference to FIGS. 17 to 20B.
  • the leaf spring 150 is provided in the center of the lateral portion 142 of the pillar 140 and connects the lateral portion 142 of the pillar 140 and the upper end of the headrest frame 130 .
  • the leaf spring 150 is composed of a pillar holding portion 152 that holds the lateral portion 142 of the pillar 140 and a frame holding portion 151 that holds the frame.
  • the frame holding portion 151 is composed of a first plate-like portion 151a that contacts the headrest frame 130 from above and a second plate-like portion 151b that contacts from below.
  • a pillar holding portion 152 of the leaf spring 150 is formed in a substantially cylindrical shape to match the diameter of the pillar 140 and is formed to extend along the lateral portion 142 of the pillar 140 when held. Further, as shown in FIGS. 18 and 19, the pillar holding portion 152 bridges and connects the first plate-shaped portion 151a and the second plate-shaped portion 151b.
  • the first plate-shaped portion 151a and the second plate-shaped portion 151b are arranged to face each other, and a gap is provided between the first plate-shaped portion 151a and the second plate-shaped portion 151b.
  • a fastening hole 157 is formed in the center of each of the first plate-like portion 151a and the second plate-like portion 151b.
  • the end of the headrest frame 130 is inserted into the gap between the first plate-like portion 151a and the second plate-like portion 151b.
  • a clinch nut 162 is attached to the fastening hole 157 of the second plate-shaped portion 151b.
  • the bolt 161 of the fastening member 160 is inserted into the fastening hole 157, and the bolt 161 and the clinch nut 162 are fastened.
  • the end portion of the headrest frame 130 is fixed while being sandwiched between the frame sandwiching portions 151 of the plate springs 150 .
  • the clinch nut 162 may be a general nut.
  • the end of the second plate-shaped portion 151b is provided with an inclined piece 158 that extends in an inclined downward direction, so that when the headrest 103 is assembled, the end of the headrest frame 130 is inclined. Since the part is guided into the gap, insertion is facilitated.
  • the pillar holding part 152 is also configured to hold the pillar 140 when the end of the headrest frame 130 is held between the first plate-like part 151a and the second plate-like part 151b.
  • the pillar holding portion 152 is formed in accordance with the diameter of the pillar 140, but if it is tightly tightened, the force required to turn the headrest 103 increases. If the force applied to the operation is large, it becomes difficult for the user to use, but if this force is too small, the headrest 103 may turn unintentionally or make an unpleasant sound.
  • a finger-like portion 153 is provided at the center of the pillar holding portion 152 as a tolerance absorption function for absorbing manufacturing tolerances, and the force associated with the rotation of the headrest 103 becomes appropriate. I'm trying
  • the fingers 153 that have a tolerance absorbing function are formed by making a U-shaped notch 154 in the center of the pillar holding part 152 and bending the inside thereof toward the center of the pillar 140 , i.e., bending it closer to the pillar 140 . It is realized by forming so that an urging force is applied to the In other words, the finger 153 is realized by a bias arranged perpendicular to the transverse plane.
  • the fingers 153 are formed generally along the circumference of the lateral portion 142 of the pillar 140, as shown in FIGS. 20A and 20B. Further, as shown in FIG. 20A, when the pillar 140 is not inserted, the distal end portion 153a of the finger-like portion 153 is in a state of being brought closer by the adjustment distance T1. When inserted, the leaf spring 150 can hold the pillar 140 with an appropriate force because the leaf spring 150 abuts on the pillar and exerts an urging force on the pillar 140 .
  • the tip portion 153a itself of the finger-like portion 153 is bent away from the pillar 140 as shown in FIG. 20B. Thereby, the tip portion 153 a of the finger-like portion 153 is prevented from being damaged by direct contact with the pillar 140 .
  • An alternative leaf spring 150A has a second finger 155 arranged parallel to the cross section of the pillar 140 in addition to the leaf spring 150 shown in FIG. Since the configuration other than the second finger-like portion 155 is the same as that of the leaf spring 150 shown in FIG. 19, the same reference numerals are given to the same functions, and the description thereof will be omitted.
  • the finger-like portion 153 may be referred to as the first finger-like portion 153 in order to distinguish it from the second finger-like portion 155 .
  • the second finger 155 may be applied alone as a tolerance absorbing function, or may be applied in combination with the first finger 153 arranged perpendicular to the cross section. Providing a second finger 155 may provide the advantage of having multiple dimensions of adjustment to control operating effort. It is also possible to bias the pillar 140 from multiple directions.
  • the second finger 155 is formed to extend parallel to the lateral portion of the pillar 140 as a second tolerance absorbing function.
  • a U-shaped notch 156 is formed in the leaf spring 150, and the inside of the notch 156 is bent toward the pillar 140, so that a biasing force is applied to the pillar 140 when the pillar 140 is held.
  • the tip portion 155a of the second finger-like portion 155 is in a state of being brought closer by the adjustment distance T2.
  • the second finger 155 abuts the outer surface of the pillar 140 (the lateral portion 142), and the biasing force F2 is applied to the pillar 140, so that the leaf spring 150A holds the pillar 140 with an appropriate force. be able to.
  • the tip portion 155 a of the second finger-like portion 155 itself is bent away from the pillar 140 . As a result, damage due to direct contact of the tip portion 155a with the pillar 140 is suppressed.
  • FIG. 1 A second example of the second embodiment will be described with reference to FIGS. 17 and 23 to 24.
  • FIG. The second embodiment like the first embodiment, is applied to a rotating headrest 103, and the headrest 103 includes a headrest frame 130, a pillar 140, a leaf spring 150, a pad material 103a, a trim cover 103b, and a fastening member 160. I have.
  • the leaf springs rotate together when torque is applied to the bolts, making assembly difficult.
  • the leaf springs and pillars do not have a rotation control function with respect to the headrest frame, and an assembly jig is required for assembly.
  • the headrest frame 130 is added with a plurality of rotation control functions.
  • the first rotation control function is a leaf spring control section 131 that controls the rotation and lateral movement of the leaf spring 150 provided on the headrest frame 130 .
  • a second rotation control function is a pillar control unit 132 that controls the rotation of the pillar 140 and the movement in the front-rear direction.
  • the leaf spring control portion 131 is composed of two elongated ridge-like projections formed on the headrest frame 130. As shown in FIGS. The two protruding portions are spaced apart by the same size as the width of the leaf spring 150 and formed to extend in the front-rear direction. The leaf spring 150 is sandwiched between the two projecting portions, and when assembled, the left and right side portions of the leaf spring 150 abut against the projecting portions, thereby preventing co-rotation of the leaf spring 150 that occurs when the bolt is fastened. suppressed.
  • the pillar control portion 132 is a projecting portion formed in the headrest frame 130 at a position where the pillar 140 (lateral portion 142) and the headrest frame 130 abut.
  • the protruding portion abuts on the rear side portion of the pillar 140, thereby suppressing co-rotation of the pillar 140 that occurs when the bolt is fastened.
  • the plate spring control section 131 and the pillar control section 132 can suppress angular deviation between the pillar 140 and the headrest frame 130 . This prevents the ends of the frame openings 134 a and 134 b of the headrest frame 130 from interfering with the pillars 140 before the desired inclination angle of the headrest 103 is reached. As a result, the headrest frame 130 is sufficiently rotated in the stored state when not in use, and the seat back 101 is in a clear state.
  • the position specifying function facilitates assembly and eliminates the need for assembly jigs, thereby reducing costs.
  • the reduced slack between the pillars 140 and the headrest frame 130 increases the stiffness of the headrest 103 as an assembly, resulting in improved perceived quality.
  • FIG. 17 A third example of the second embodiment will be described with reference to FIGS. 17 and 25-26.
  • the third embodiment like the first and second embodiments, applies to a pivoting headrest 103.
  • FIG. 17 A third example of the second embodiment will be described with reference to FIGS. 17 and 25-26.
  • the third embodiment like the first and second embodiments, applies to a pivoting headrest 103.
  • the headrest assembly was difficult to assemble because the frame moved laterally with respect to the pillars. Also, the pillars did not provide lateral control on the frame, requiring fixtures for assembly.
  • the headrest 103 of this embodiment is provided with a lateral direction control section 133 inside the headrest frame 130 .
  • a touch-off (tolerance absorption function) projecting laterally within the frame opening 134a is provided as the lateral control unit 133 .
  • touch-offs are not formed in the other frame opening 134b, but touch-offs may be formed in the other frame opening 134b. Also, touch-offs may be formed in both frame openings 134a, 134b.
  • the tolerance absorbing feature may be located adjacent the frame opening 134a of the headrest frame 130 that receives the notched pillar 140.
  • the notches allow the headrest 103 to be selectively raised and lowered.
  • the tolerance absorbing feature centers the pillar 140 within the frame opening 134 when the headrest 103 is assembled. Therefore, fluctuations as an assembly are eliminated, and the rotational force and rotational range of the headrest 103 are made to match.
  • the location specific feature also facilitates assembly, eliminates the need for assembly tools, and reduces costs. Then, the looseness between the pillar 140 and the headrest frame 130 is reduced, the rigidity of the headrest 103 as an assembly is increased, and the perceived quality is improved.
  • FIG. 27 to 29 A fourth embodiment will be described with reference to FIGS. 27 to 29.
  • FIG. The fourth embodiment is applied to the pivotable headrest 103, like the first to third embodiments.
  • the shape of the rear side of the frame opening 234 through which the pillar 240 is passed is formed in the design stage so as to be semicircular in accordance with the cross-sectional shape of the pillar 240 indicated by the dotted line. It had been. As a result, it was expected that the pillar 240 and the frame opening 234 would come into contact with each other with good surface contact. However, since the pillar 240 is actually formed by a bending operation, the cross-sectional shape of the pillar 240 is partially deformed into a flat or elliptical shape, and is different from the frame opening 234 formed in a semicircular shape. As if touching, the stress was concentrated on the contact part.
  • the pillars 140 and the frame openings 134a are in good surface contact, and the stress at the time of contact is reduced.
  • the rear side portion 135 of the other frame opening portion 135b may also be formed in accordance with the actual cross-sectional shape of the pillar 140 in the same manner.
  • the notched pillar has at least two surface-contacting patch areas.
  • the other pillar is also configured to have at least one surface contacting patch area.
  • the pillar 140 does not come into contact with the edge of the frame opening 134a, and the headrest 103 secures a desired rotation range.
  • FIG. 18 A fifth embodiment will be described with reference to FIGS. 18 and 30.
  • FIG. The fifth embodiment is applied to the pivotable headrest 103, like the first to fourth embodiments.
  • the plate spring 150 is used for connection between the headrest frame 130 and the pillar 140 as described above. Conventionally, the process of attaching nuts to leaf springs was done manually, which took too much time for mass production. In addition, it is difficult to automate because it is a complicated task.
  • a self clinch nut (hereinafter referred to as a clinch nut 162) is used instead of a nut conventionally used for attaching the leaf spring, and when assembling the headrest 103, the leaf spring is 150 is attached to the headrest frame 130 .
  • the clinch nut 162 is attached to the plate spring 150 (clinch nut attaching step: step S201). At this time, the hardness of the clinch nut 162 is assumed to be greater than that of the leaf spring 150 .
  • Post-treatment for example, heat treatment
  • post-treatment step: step S202 Post-treatment step S202
  • step S203 An assembly part consisting of the clinch nut 162 and the plate spring 150 is attached to the headrest frame 130 (assembly part attachment step: step S203).
  • the pillar 140 may be attached to the leaf spring 150 before the headrest frame 130 is attached to the leaf spring 150 .
  • step S204 bolts 161 are attached to leaf spring 150 and headrest frame 130, and tightened with clinch nut 162 (fastening step: step S204). Shoulder bolts may be used to prevent excessive torque or crushing of the plastic headrest frame 130 during assembly.
  • the automated clinch nut 162 installation process described above provides an additional biasing force such as a leaf spring 150 having sufficient stiffness to generate sufficient frictional force to control the rotational force of the headrest 103. It can be used without requiring any parts.
  • the vehicle seat S100 including the headrest 103 according to the present embodiment has been described above with reference to the drawings.
  • the present invention is not limited to vehicle seats mounted on ground vehicles having wheels, such as automobiles and railways, but is applied to seats mounted on aircraft, ships, and the like that move other than on the ground. good too.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

La présente invention concerne un amortisseur dynamique qui permet à un appui-tête d'être de forme plus compacte, ainsi qu'un appui-tête et un siège de véhicule qui comprennent l'amortisseur dynamique.　Un amortisseur dynamique 40 comprend : un poids 60 ; un élément élastique 61 supportant le poids 60 de manière à pouvoir vibrer ; et un boîtier d'amortisseur 41 stockant le poids 60 et l'élément élastique 61. Le boîtier d'amortisseur 41 comporte, sur au moins chacun des côtés gauche et droit, une partie de liaison 50 qui se relie à un pilier d'appui-tête 30. Chaque partie de liaison 50 est disposée à un emplacement qui ne chevauche pas une partie centrale du boîtier d'amortisseur 41 dans une direction haut-bas.
PCT/JP2022/028273 2021-07-21 2022-07-20 Amortisseur dynamique, appui-tête et siège de véhicule WO2023003030A1 (fr)

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US202163241637P 2021-09-08 2021-09-08
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014007082A1 (fr) * 2012-07-06 2014-01-09 テイ・エス テック株式会社 Dispositif de siège pour véhicule
WO2020149231A1 (fr) * 2019-01-16 2020-07-23 テイ・エス テック株式会社 Amortisseur dynamique, appui-tête et siège de véhicule

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014007082A1 (fr) * 2012-07-06 2014-01-09 テイ・エス テック株式会社 Dispositif de siège pour véhicule
WO2020149231A1 (fr) * 2019-01-16 2020-07-23 テイ・エス テック株式会社 Amortisseur dynamique, appui-tête et siège de véhicule

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