WO2014007203A1 - ヘッドレスト支持構造 - Google Patents

ヘッドレスト支持構造 Download PDF

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Publication number
WO2014007203A1
WO2014007203A1 PCT/JP2013/068021 JP2013068021W WO2014007203A1 WO 2014007203 A1 WO2014007203 A1 WO 2014007203A1 JP 2013068021 W JP2013068021 W JP 2013068021W WO 2014007203 A1 WO2014007203 A1 WO 2014007203A1
Authority
WO
WIPO (PCT)
Prior art keywords
headrest
support
support structure
convex portion
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/068021
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
玄 高橋
加藤　英之
小林　英樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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
Priority claimed from JP2012148721A external-priority patent/JP2014008335A/ja
Priority claimed from JP2012194313A external-priority patent/JP5803854B2/ja
Priority claimed from JP2012258918A external-priority patent/JP5692205B2/ja
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to IN11253DEN2014 priority Critical patent/IN2014DN11253A/en
Priority to EP13813302.0A priority patent/EP2868232A4/en
Priority to CN201380035506.XA priority patent/CN104427913B/zh
Priority to KR1020147036308A priority patent/KR101598163B1/ko
Priority to US14/412,047 priority patent/US10099590B2/en
Publication of WO2014007203A1 publication Critical patent/WO2014007203A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • 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—Supports for the head or the back
    • A47C7/38—Supports for the head or the back for the head, e.g. detachable
    • 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
    • B60N2/803—Head-rests fixed
    • 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
    • B60N2/897—Head-rests with sleeves located in the back-rest for guiding the rods of the head-rest

Definitions

  • the present invention relates to a headrest support structure that elastically supports a headrest on a seat back.
  • the engine speed is decreasing at the time of idling of the engine for the purpose of reducing the fuel consumption of the vehicle.
  • the frequency range of engine vibration during idling includes the resonance frequency of the vehicle seat, which leads to a decrease in drivability. Therefore, in recent years, the development of a seat that attenuates vibration in the front-rear direction of the seat by swinging the headrest relative to the seat back in the front-rear direction when an excitation force is transmitted to the seat has been advanced. ing.
  • Patent Document 1 discloses an example of a headrest support structure that elastically supports a headrest on a seat back.
  • the support structure includes a cylindrical bracket provided on the seat back and a support member that supports a tip portion of the headrest stay that protrudes from the headrest, and the support member tilts in the front-rear direction in the accommodation chamber of the bracket. Is housed in a possible state.
  • springs are respectively provided at two different positions in the prescribed direction in which the headrest stay extends between the outer surface of the support member and the inner surface of the bracket.
  • the position of the fulcrum serving as the swing center of the headrest in the specified direction can be displaced by individual differences in the characteristics of the pair of springs, mounting errors of the springs, and the like. Therefore, variations tend to occur in the vibration damping characteristics of the sheet.
  • a support shaft that protrudes in the vehicle width direction is provided on the support member, and a support portion that rotatably supports the support shaft is provided on the bracket.
  • the support member by attaching the support member to the bracket so that the support shaft is supported by the support portion, the headrest swings in the front-rear direction with the support shaft as a fulcrum.
  • variations in the position of the fulcrum in the prescribed direction can be suppressed, and variations in the vibration damping characteristics of the seat can be suppressed.
  • the provision of the support shaft and the support portion causes a new problem that the configuration of the support member and the bracket is complicated.
  • An object of the present disclosure is to provide a headrest support structure that can suppress variation in damping characteristics of vibration generated in a seat with a simple configuration.
  • a headrest support structure for achieving the above object is configured to support a projecting member projecting from the headrest, and to be provided on a seat back, wherein the support member has a width direction of the headrest.
  • a bracket having a storage chamber that is accommodated so as to be tiltable in the front-rear direction orthogonal to each other, and a spring provided in the storage chamber that bends and deforms in response to the tilt of the support member in the front-rear direction with respect to the bracket.
  • a convex portion protruding in the front-rear direction from one of the outer surface of the support member and the inner surface of the bracket, and provided at a position different from the spring in a specified direction orthogonal to both the front-rear direction and the width direction of the headrest. And a convex portion.
  • the support member that supports the headrest via the protruding member tilts in the front-rear direction with the convex portion serving as a fulcrum, regardless of individual differences in springs or spring mounting errors. For this reason, it is difficult for the headrest to be displaced from the center of swing when the headrest swings in the front-rear direction relative to the seat back. For this reason, it is possible to suppress variations in the attenuation characteristics of vibration generated in the seat with a simple configuration.
  • the convex portion may be provided at a position far from the headrest in the specified direction with respect to the spring, but is preferably provided at a position near the headrest in the specified direction with respect to the spring.
  • the swing range of the headrest in the front-rear direction is narrow even when the allowable amount of displacement in the front-rear direction of the support member is smaller than the configuration in which the convex portion is provided far from the headrest with respect to the spring. It becomes difficult to become. As a result, it is possible to suppress a reduction in vibration damping characteristics.
  • the spring may be disposed on the first side in the front-rear direction with respect to the projecting member, and the convex portion may be disposed on the second side in the front-rear direction with respect to the projecting member.
  • the spring is disposed on the rear side of the protruding member and the convex portion is disposed on the front side of the protruding member.
  • the gap filling member in the gap between the outer side surface of the supporting member and the inner side surface of the bracket facing each other.
  • the gap member is arranged at the same position as the convex portion in the defined direction, more preferably on the opposite side of the spring across the convex portion.
  • the second gap member in the gap between the outer side surface of the support member and the inner side surface of the bracket facing each other.
  • the second gap member is disposed at a position close to the spring with respect to the convex portion in the specified direction.
  • the second gap member is preferably arranged at the same position as the spring in the specified direction.
  • the resonance frequency of the seat in order to set the resonance frequency of the seat low, it is preferable not only to lower the support rigidity of the headrest but also to increase the weight of the headrest that can be displaced with respect to the seat back that can be regarded as a rigid body. Therefore, in order to increase the weight of the headrest, a headrest in which a weight that is harder than the cushion material is embedded in the cushion material may be employed. Thus, the resonance frequency of the seat can be further lowered by increasing the weight of the headrest while lowering the support rigidity of the headrest.
  • the spring it is preferable to arrange the spring so that the headrest can be urged rearward. According to this configuration, even if the head of the occupant seated on the seat collides with the headrest from the front, the spring does not deform so as to be further bent, so that the swaying of the occupant's head in the front-rear direction is suppressed. Will be able to.
  • the disassembled perspective view which shows 1st Embodiment of a headrest support structure.
  • Sectional drawing which shows the headrest support structure of FIG.
  • Sectional drawing which shows the headrest support structure of FIG. 2 when a headrest displaces ahead.
  • the graph which shows the relationship between the displacement of a headrest, and the load which the displacement requires.
  • (A) is a side view schematically showing a vehicle seat
  • (b) is a schematic diagram showing a spring-mass model for vibration in the front-rear direction of the seat.
  • the schematic diagram which shows the headrest support structure of a 3rd comparative example.
  • the schematic diagram which shows the headrest support structure of 1st Embodiment.
  • Sectional drawing which shows 2nd Embodiment of a headrest support structure.
  • (A) is a schematic diagram which shows the headrest support structure of 2nd Embodiment
  • (b) is a schematic diagram which shows the headrest support structure of a 4th comparative example.
  • (A) And (b) is a perspective view which shows the headrest support which concerns on 3rd Embodiment, respectively.
  • (A) And (b) is a schematic diagram which shows the headrest support structure which concerns on 3rd Embodiment, respectively.
  • Sectional drawing which shows the headrest support structure of another embodiment Sectional drawing which shows the headrest support structure of another embodiment.
  • (A) And (b) is sectional drawing which shows the headrest support structure of another embodiment, respectively.
  • (A) And (b) is sectional drawing which shows the headrest support structure of another embodiment, respectively.
  • the disassembled perspective view which shows the headrest support structure of another embodiment.
  • the side on which the head of a person seated on the seat is located with respect to the headrest is referred to as “front side”, and the opposite side is referred to as “rear side”.
  • the width direction of the seat is the same as the width direction of the vehicle, and the prescribed direction that is orthogonal to both the width direction of the vehicle and the front-rear direction of the vehicle is referred to as “vertical direction”.
  • the seat 11 has a seat back 12 that supports the back of the occupant, and the seat back 12 elastically supports the headrest 13 in a state in which the seat back 12 can swing in the front-rear direction.
  • the headrest 13 includes a shock absorbing cushion material 14, and a weight 15 formed of a material harder than the cushion material 14 (for example, a metal such as iron) is embedded in the cushion material 14.
  • the headrest 13 is provided with a pair of headrest stays 16 as an example of a protruding member. These headrest stays 16 are juxtaposed along the vehicle width direction and have a tip portion 161 that protrudes from the headrest 13 toward the seat back 12.
  • a seat back frame 17 is provided in the seat back 12, and two support brackets 18 are provided above the seat back frame 17 at intervals in the vehicle width direction.
  • Each support bracket 18 is formed of a metal in a square cylinder shape, and is fixed to the seat back frame 17 by welding or the like.
  • the support bracket 18 extends in the vertical direction. That is, the axis of the support bracket 18 extends in the up-down direction (specified direction).
  • the internal space of the support bracket 18 forms a storage chamber 181 that opens on the side facing the headrest 13 and on the opposite side (that is, both the upper and lower sides).
  • a headrest support 19 as a support member is inserted into the storage chamber 181 from the upper opening.
  • the headrest support 19 is made of, for example, a synthetic resin.
  • the headrest 13 is elastically supported by the seat back frame 17 by inserting the tip portion 161 of the headrest stay 16 into the headrest support 19.
  • the lower end portion of the headrest support 19 is formed to be tapered.
  • the headrest support 19 is formed with a stay hole 191 penetrating in the vertical direction, and the tip portion 161 of the headrest stay 16 is inserted into the stay hole 191 from the upper opening thereof. In this embodiment, the tip portion 161 of the headrest stay 16 passes through the stay hole 191.
  • a mountain-shaped convex portion 193 that protrudes forward is provided on the outer front surface 192 of the headrest support 19 so as to extend in the vehicle width direction. That is, the convex portion 193 protrudes from the outer surface 192 of the headrest support 19 toward the inner surface 182 of the support bracket 18 that faces the outer surface 192. The tip of the convex portion 193 is in contact with the inner side surface 182 of the support bracket 18.
  • a first bead 21 as a second gap filling member is provided on the lower front side of the headrest support 19 to fill a gap between the outer side surface 192 of the headrest support 19 and the inner side surface 182 of the support bracket 18. It has been.
  • the first bead 21 is formed of, for example, the same synthetic resin as the headrest support 19 and has substantially the same height as the convex portion 193 (that is, the length in the front-rear direction).
  • the first bead 21 may be formed integrally with the headrest support 19 or may be formed separately and later fixed to the headrest support 19 by bonding or the like.
  • a first gap that fills a gap between the outer side surface 192 of the headrest support 19 and the inner side surface 182 of the support bracket 18 facing each other.
  • a second bead 22 is provided as a gap body.
  • the second bead 22 is formed of the same synthetic resin as that of the headrest support 19, similarly to the first bead 21.
  • the second bead 22 may be integrally formed with the headrest support 19 or may be formed separately and later fixed to the headrest support 19 by bonding or the like.
  • a metal leaf spring 23 supported by the headrest support 19 is provided on the lower rear side of the headrest stay 16. That is, the plate spring 23 is disposed on the opposite side of the second bead 22 with the convex portion 193 interposed therebetween and at the same position as the first bead 21 in the vertical direction.
  • a leaf spring 23 is a cantilever spring having a lower end as a fixed end and an upper end as a free end. The leaf spring 23 applies a biasing force to the headrest support 19 so as to exert a biasing force that tilts the headrest 13 backward relative to the seat back 12. Thereby, the tip of the convex portion 193 is pressed against the inner side surface 182 of the support bracket 18.
  • the portion located below the leaf spring 23 functions as a topper portion 194 that can come into contact with the inner side surface 182 on the rear side of the support bracket 18.
  • the headrest support 19 can tilt in the front-rear direction with respect to the support bracket 18 with the tip of the convex portion 193 as a fulcrum S.
  • a reaction force due to the bending of the leaf spring 23 is generated.
  • Such a tilting range of the headrest support 19 is provided in the lower rear portion of the headrest support 19 from the position where the first bead 21 provided in the lower front portion of the headrest support 19 abuts on the front inner surface 182 of the support bracket 18. This is a range up to a position where the stopper portion 194 comes into contact with the rear inner surface 182 of the support bracket 18.
  • the headrest support 19 into which the tip portion 161 of the headrest stay 16 is inserted tilts counterclockwise in FIG. 3 with the tip of the projection 193 as a fulcrum S with respect to the support bracket 18. To do. At the time of this tilting, the leaf spring 23 is pressed against the inner surface 182 on the rear side of the support bracket 18 and bent to generate a resistance against the displacement of the headrest 13.
  • the stopper portion 194 comes into contact with the inner side surface 182 on the rear side of the support bracket 18, and further tilting of the headrest support 19 is prevented. Therefore, further forward displacement of the headrest 13 is performed by elastic deformation of the headrest stay 16 and the like.
  • the first comparative example when the headrest support 19 tilts as the headrest 13 is displaced forward, the tilt is limited by the second bead 22.
  • the tilting range of the headrest support 19 is narrowed, and further tilting of the headrest support 19 is restricted before the stopper portion 194 on the lower rear side of the headrest support 19 comes into contact with the inner surface 182 of the support bracket 18.
  • the second bead 22 is disposed above the convex portion 193 and does not exist below the convex portion 193, so that the headrest is not limited to the second bead 22.
  • the support 19 tilts counterclockwise in FIG. That is, the headrest support 19 is allowed to tilt until the stopper portion 194 contacts the inner surface 182 of the support bracket 18. Therefore, the swing range of the headrest 13 is expanded as compared with the case of the first comparative example.
  • the tilt of the headrest support 19 with respect to the support bracket 18 is restricted from the beginning by the contact of the first bead 21 with the front inner surface 182 of the support bracket 18. Yes. Therefore, the rearward displacement of the headrest 13 is performed from the beginning by elastic deformation of the headrest stay 16 and the like.
  • the relationship between the amount of displacement of the headrest 13 in the front-rear direction and the load necessary for the displacement is as shown in FIG. That is, an area where the support rigidity of the headrest 13 is small is set in the forward position from the initial position where the displacement amount is “0 (zero)”, that is, the initial position of the headrest 13 when no external force is received. However, the support rigidity of the headrest 13 is increased for forward displacement exceeding a certain amount and displacement from the initial position to the rear. That is, in the seat 11 of the present embodiment, minute swinging (vibration) of the headrest 13 with respect to the seat back frame 17 is allowed.
  • the headrest 13 uses the tip of the convex portion 193 as a fulcrum S as a seat back. By swinging back and forth with respect to 12, the vibration of the seat 11 is attenuated.
  • the headrest support structure exhibits high support rigidity against the rearward displacement of the headrest 13, the head of the occupant can be reliably received by the headrest 13 when the vehicle receives a rear-end collision.
  • m1 indicates the equivalent mass of the seat skeleton including the rails and the seat back frame 17
  • m2 indicates the equivalent mass of the headrest 13.
  • K1 indicates the equivalent stiffness of the seat skeleton
  • k2 indicates the equivalent stiffness of the headrest support structure.
  • the headrest 13 functions as a mass system of the dynamic damper of the seat 11, and the resonance frequency of the seat 11 is lowered.
  • the effect of lowering the resonance frequency at this time increases as the equivalent mass m2 of the headrest 13 is increased or the equivalent rigidity k2 of the headrest support structure is reduced.
  • a weight 15 is built in the headrest 13 of the present embodiment.
  • the weight of the headrest 13 becomes large and the equivalent mass m2 of the headrest 13 can be increased.
  • the resonance frequency of the sheet 11 is lowered.
  • the convex portion 193 is disposed at a position away from the headrest 13.
  • a stopper provided on the lower rear side of the headrest support 19.
  • the allowable width of the displacement of the portion 194 in the front-rear direction is narrower in the second comparative example. In other words, in this embodiment, the allowable width of the displacement of the stopper portion 194 in the front-rear direction is wider than in the case of the second comparative example.
  • FIG. 6 is a schematic diagram of the support structure of the third comparative example
  • FIG. 7 is a schematic diagram of the support structure of the present embodiment.
  • the support structure of the third comparative example has a configuration in which a first spring 51 is provided instead of the convex portion 193 and a second spring 52 is provided instead of the leaf spring 23.
  • the headrest support 19 tilts around the fulcrum S1 set between the springs 51 and 52 in the vertical direction.
  • the headrest support structure allows the headrest 13 to be positioned forward from the reference position indicated by a solid line in FIGS. 6 and 7 by an amount of allowable displacement ⁇ M.
  • the design swing width of the headrest 13 in the front-rear direction is a displacement allowance ⁇ M.
  • the actual swinging width of the headrest 13 in the front-rear direction is narrower than the allowable displacement amount ⁇ M due to the tolerance of each component.
  • the distance along the vertical direction from the fulcrum S1 to the upper end of the headrest 13 is the first distance L11
  • the distance along the vertical direction from the fulcrum S1 to the lower end of the headrest support 19 is the second distance.
  • Distance L12 In this case, when the headrest 13 is displaced forward from the reference position by the allowable displacement amount ⁇ M, the lower end of the headrest support 19 is displaced backward from the reference position indicated by the solid line in FIG. 6 by the first displacement amount ⁇ M11.
  • the first displacement amount ⁇ M11 is represented by the following relational expression (Formula 1).
  • ⁇ M11 ⁇ M ⁇ (L12 / L11) (Formula 1)
  • the distance along the vertical direction from the fulcrum S to the upper end of the headrest 13 is the first distance L21 shorter than the first distance L11.
  • a distance along the vertical direction to the lower end of the headrest support 19 is a second distance L22 that is longer than the second distance L12.
  • the second displacement amount ⁇ M12 is represented by the following relational expression (Formula 2).
  • ⁇ M12 ⁇ M ⁇ (L22 / L21) (Formula 2)
  • the actual first displacement amount to the rear of the lower end of the headrest support 19 is obtained by subtracting the specified amount ⁇ M3 from the first displacement amount ⁇ M11 calculated using the relational expression (Formula 1). Value.
  • the actual second displacement amount to the rear of the lower end of the headrest support 19 is a value obtained by subtracting the specified amount ⁇ M3 from the second displacement amount ⁇ M12 calculated using the relational expression (Formula 2). The value is larger than the actual first displacement amount.
  • the position in the front-rear direction of the headrest 13 in the steady state is positioned rearward as compared with the support structure of the third comparative example. That is, the actual swinging width of the headrest 13 in the front-rear direction is wider than that of the support structure of the third comparative example. Therefore, in the support structure of the present embodiment, the actual oscillation width is less likely to be narrower than the support structure of the third comparative example, and hence the vibration damping efficiency is difficult to decrease.
  • the headrest support 19 that supports the headrest 13 via the headrest stay 16 tilts in the front-rear direction with the tip of the projection 193 as a fulcrum S, regardless of individual differences in springs or spring mounting errors. Therefore, it is difficult for the headrest 13 to be displaced in the up-down direction when the headrest 13 swings relative to the seat back 12 in the front-rear direction. For this reason, it is possible to suppress variations in the attenuation characteristics of vibrations generated in the seat 11 with a simple configuration.
  • the distance from the center of the swing to the lower end of the headrest support 19 is set to the third It can be made longer than in the case of the support structures of the comparative example and the second comparative example.
  • the actual swinging width of the headrest 13 in the front-rear direction is less likely to be narrowed, and the vibration damping efficiency can be increased.
  • the tolerances of the headrest support 19 and the support bracket 18 required for securing the swing width in the front-rear direction of the headrest 13 to a certain level or more are compared with those of the second comparative example and the third comparative example. You can make it bigger. Therefore, the headrest support 19 and the support bracket 18 can be easily manufactured.
  • the convex portion 193 is provided on the upper front side of the headrest support 19 and the leaf spring 23 is provided on the lower rear side of the headrest support 19.
  • the center (fulcrum) S of the tilt of the headrest support 19 with respect to the support bracket 18 becomes difficult to swing, and the vibration of the headrest 13 can be easily controlled. Therefore, the damper characteristic of the headrest 13 can be set more accurately.
  • the headrest support 19 is compared with the support structure of the first comparative example.
  • the bending of the leaf spring 23 when tilting forward with the tip of the convex portion 193 as the fulcrum S is less likely to be limited by the second bead 22.
  • the swing range of the headrest 13 in the front-rear direction can be expanded. Therefore, when the excitation force is transmitted to the sheet 11, the damping efficiency of the vibration of the sheet 11 caused by the excitation force can be increased.
  • the headrest 13 By incorporating the weight 15 in the headrest 13, the headrest 13 can be made heavier. Thereby, the resonant frequency of the sheet
  • the leaf spring 23 is disposed so as to urge the headrest 13 backward.
  • the leaf spring 23 is not deformed so as to be further bent, and the rearward displacement of the headrest 13 is restricted. Therefore, when the vehicle on which the seat 11 of this embodiment is mounted receives a rear-end collision, the head of the occupant can be reliably received by the headrest 13.
  • the headrest 13 when an impact is applied to the headrest 13 from behind, the headrest 13 is displaced forward against the urging force from the leaf spring 23, so that the impact can be reduced. .
  • the headrest support 19 has a bottom portion that closes the lower end portion at the lower end portion thereof.
  • the leaf spring 23 is disposed in a state where a horizontally extending lower end region is embedded in the bottom of the headrest support 19.
  • the 2nd bead 22 is arrange
  • Other configurations are basically the same as those in the first embodiment.
  • FIG. 10A is a schematic diagram of the support structure of this embodiment
  • FIG. 10B is a schematic diagram of the support structure of the fourth comparative example.
  • the fourth comparative example corresponds to a case where the arrangement of the convex portion 193 and the leaf spring 23 in this embodiment is exchanged.
  • the headrest 13 is moved from the reference position indicated by the solid line to the position indicated by the two-dot chain line (the stopper portion 194 is the position of the support bracket 18 due to the swinging of the headrest support 19 with respect to the support bracket 18).
  • the position can be displaced up to a position where the inner surface 182 abuts.
  • the allowable upper limit value of the displacement amount of the headrest 13 is indicated by “A”.
  • Ls ′ is the distance from the stopper portion 194 to the tilting center S of the headrest support 19 (the tip of the convex portion 193)
  • Lh ′ is the upper portion of the headrest 13 from the stopper portion 194. The distance to each is shown.
  • the spring constant of the leaf spring 23 becomes small.
  • the headrest support 19 of this embodiment has a metal part 132 constituting the lower end region and a resin part 131 constituting the other part. Yes.
  • the metal part 32 is integrated with the resin part 131 through insert molding.
  • the resin portion 131 is provided with convex portions 193 and beads 21 and 22.
  • the metal part 132 is formed in a cylindrical shape having a bottom part at the lower end.
  • a leaf spring 23 is integrally formed on the outer side surface on the rear side of the metal portion 132.
  • the leaf spring 23 is a cantilever spring having a lower end as a fixed end and an upper end as a free end.
  • the headrest support 19 is disposed so as to be tiltable with respect to the support bracket 18 while being elastically supported by a plate spring 23.
  • the tilt of the headrest support 19 in the direction in which the headrest 13 is displaced forward is such that the lower end portion of the metal portion 132 that functions as the stopper portion 194 is the inner side surface 182 on the rear side of the support bracket 18. To the position where it abuts.
  • the weight 15 need not be embedded in the cushion material 14 of the headrest 13.
  • the first bead 21 may be provided below the leaf spring 23 in the vertical direction. Further, the first bead 21 may be provided above the plate spring 23 as long as it is close to the plate spring 23 with respect to the convex portion 193 in the vertical direction.
  • the height of the first bead 21 may be lower than the height of the convex portion 193.
  • the swing range of the headrest 13 can be expanded as compared with the above embodiments.
  • the height of the first bead 21 may be made higher than the height of the convex portion 193.
  • the first bead 21 is a material having higher rigidity than the leaf spring 23
  • the first bead 21 may be formed of a material different from the material forming the headrest support 19.
  • the first bead 21 may be omitted. Even in this configuration, the rearward displacement of the headrest 13 can be restricted by the second bead 22.
  • the leaf spring 23 may be disposed on the lower front side of the headrest stay 16 and the first bead 21 may be disposed on the lower rear side of the headrest stay 16. In this case, it is preferable to arrange the convex portion 193 on the upper rear side of the headrest stay 16 and the second bead 22 on the upper front side.
  • the leaf spring 23 may be disposed on the upper front side of the headrest stay 16, and the convex portion 193 may be disposed on the lower rear side of the headrest stay 16.
  • the first bead 21 is disposed on the upper rear side of the headrest stay 16 and the second bead 22 is disposed on the lower front side of the headrest stay 16.
  • the second bead 22 is disposed below the convex portion 193 in the vertical direction.
  • the convex portion 193 is configured to protrude from the inner surface 182 toward the outer surface 192 of the outer surface 192 of the headrest support 19 and the inner surface 182 of the support bracket 18 facing each other. Also good. Even in this case, the headrest support 19 tilts in the front-rear direction with the tip of the convex portion 193 as the fulcrum S.
  • the spring may be an arch-shaped spring 23A configured by bending a part of the headrest support 19 outward.
  • the spring 23A is a doubly supported spring whose both ends are fixed ends.
  • the second bead 22 may be disposed at the same position as the convex portion 193 in the vertical direction. Further, the convex portion 193 formed separately from the headrest support 19 may be fixed to the headrest support 19.
  • the second bead 22 may be arranged at the same position as the convex portion 193 in the vertical direction. Further, the convex portion 193 formed separately from the headrest support 19 may be fixed to the headrest support 19.
  • the peripheral wall of the support bracket 18 is recessed inward so that the convex portion 193 is formed. May be formed.
  • the tip of the convex portion 193 contacts the outer surface of the headrest support 19, and the headrest support 19 can tilt with the tip of the convex portion 193 as a fulcrum.
  • the second bead 22 may of course be disposed on the opposite side of the spring 23 with the convex portion 193 interposed therebetween in the vertical direction.
  • the second bead 22 may be provided at the same position as the convex portion 193 in the vertical direction, or may be provided between the convex portion 193 and the leaf spring 23 in the vertical direction.
  • the second bead 22 may be formed of a material different from the material forming the headrest support 19 as long as the second bead 22 is a material having higher rigidity than the leaf spring 23.
  • the second bead 22 may be omitted. Even in this configuration, the backward displacement of the headrest 13 can be restricted by the first bead 21.
  • the spring may be a coil spring. Further, the spring may be supported or attached to the support bracket 18 instead of the headrest support 19.
  • the spring and the convex part 193 may be arranged on the front side of the headrest stay 16, or the spring and the convex part 193 may be arranged on the rear side of the headrest stay 16.
  • the convex part 193 can be formed in various shapes, such as a conical shape, even if it is not a mountain shape.
  • the convex portion 193 having a tip that makes line contact or point contact with the inner surface 182 of the support bracket 18 or the outer surface 192 of the headrest support 19 may be used.
  • the headrest support 19A may have a rectangular parallelepiped shape.
  • stay holes 191 into which the tip portions 161 of the headrest stay 16 are inserted are formed on both sides of the headrest support 19A in the vehicle width direction. That is, the two headrest stays 16 are supported by one headrest support 19A.
  • the headrest support 19A corresponds to a “support member”.
  • the protruding member protruding from the headrest 13 may be a single plate member 16 ⁇ / b> A protruding toward the seat back 12.
  • the headrest support 19B is provided with an insertion hole 60 having an opening extending in the vehicle width direction, and the plate material 16A is inserted into the insertion hole 60 from the upper opening.
  • the headrest support 19B corresponds to a “support member”.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
PCT/JP2013/068021 2012-07-02 2013-07-01 ヘッドレスト支持構造 Ceased WO2014007203A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IN11253DEN2014 IN2014DN11253A (enExample) 2012-07-02 2013-07-01
EP13813302.0A EP2868232A4 (en) 2012-07-02 2013-07-01 SUPPORT STRUCTURE FOR HEADREST
CN201380035506.XA CN104427913B (zh) 2012-07-02 2013-07-01 头枕支承结构
KR1020147036308A KR101598163B1 (ko) 2012-07-02 2013-07-01 헤드레스트 지지 구조
US14/412,047 US10099590B2 (en) 2012-07-02 2013-07-01 Headrest support structure

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2012148721A JP2014008335A (ja) 2012-07-02 2012-07-02 ヘッドレスト支持構造
JP2012-148721 2012-07-02
JP2012194313A JP5803854B2 (ja) 2012-09-04 2012-09-04 ヘッドレスト支持構造
JP2012-194313 2012-09-04
JP2012-258918 2012-11-27
JP2012258918A JP5692205B2 (ja) 2012-11-27 2012-11-27 ヘッドレスト支持構造

Publications (1)

Publication Number Publication Date
WO2014007203A1 true WO2014007203A1 (ja) 2014-01-09

Family

ID=49881959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/068021 Ceased WO2014007203A1 (ja) 2012-07-02 2013-07-01 ヘッドレスト支持構造

Country Status (6)

Country Link
US (1) US10099590B2 (enExample)
EP (1) EP2868232A4 (enExample)
KR (1) KR101598163B1 (enExample)
CN (1) CN104427913B (enExample)
IN (1) IN2014DN11253A (enExample)
WO (1) WO2014007203A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5762179B2 (ja) * 2011-07-03 2015-08-12 日本発條株式会社 車両用シート
JP5814310B2 (ja) * 2013-07-19 2015-11-17 トヨタ自動車株式会社 ヘッドレスト支持構造
US11225179B2 (en) * 2015-11-13 2022-01-18 Adient Luxembourg Holding S.a.r.l. Sliding sleeve and headrest arrangement
DE102016208608B4 (de) * 2015-11-13 2022-02-03 Adient Luxembourg Holding S.À R.L. Gleithülse und Kopfstützenanordnung
FR3055592B1 (fr) * 2016-09-08 2018-09-21 Faurecia Sieges D'automobile Ensemble d'appui-tete de siege de vehicule et siege de vehicule comprenant un tel ensemble
JP6898611B2 (ja) * 2017-03-13 2021-07-07 テイ・エス テック株式会社 ヘッドレストガイド及び車両用シート
JP6922610B2 (ja) * 2017-09-27 2021-08-18 トヨタ紡織株式会社 シートバックフレーム
US11273746B1 (en) * 2021-03-17 2022-03-15 GM Global Technology Operations LLC Automotive seat headrest support
US11858388B2 (en) 2022-05-03 2024-01-02 Lear Corporation Seat assembly and trim member

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010194246A (ja) * 2009-02-27 2010-09-09 Toyota Boshoku Corp クッション体
WO2010150372A1 (ja) * 2009-06-24 2010-12-29 トヨタ自動車株式会社 車両用シート
JP2011201526A (ja) 2010-03-04 2011-10-13 Namba Press Works Co Ltd ヘッドレスト付車両用シート
JP2011207335A (ja) 2010-03-30 2011-10-20 Ts Tech Co Ltd 車両用シート

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313377Y2 (enExample) 1985-03-08 1991-03-27
US5080437A (en) * 1990-12-17 1992-01-14 Chrysler Corporation Self-adjusting headrest guide arrangement
JP3513646B2 (ja) 1998-09-29 2004-03-31 株式会社パイオラックス ヘッドレストの支持構造
JP2001233108A (ja) 2000-02-21 2001-08-28 Mikio Hayashi 車両用シート
DE10151360B4 (de) * 2001-10-22 2007-10-18 Ros Gmbh & Co. Kg Vorrichtung zur Aufnahme von Kopfstützenbügeln
JP2005137848A (ja) 2003-11-05 2005-06-02 Yoshihide Yamashita 汎用ヘッドレスト
JP4144514B2 (ja) * 2003-11-21 2008-09-03 トヨタ自動車株式会社 ヘッドレストの支持構造
JP2005170144A (ja) 2003-12-09 2005-06-30 Toyota Motor Corp 車両用ヘッドレスト
JP4815111B2 (ja) * 2004-08-19 2011-11-16 日本発條株式会社 車両用シート
JP4194613B2 (ja) * 2006-07-10 2008-12-10 日本発條株式会社 車両用シート
JP4287879B2 (ja) * 2006-12-27 2009-07-01 日本発條株式会社 アクティブヘッドレストのヘッドレスト傾動装置
ATE545547T1 (de) * 2006-12-27 2012-03-15 Nhk Spring Co Ltd Kopfstützenneigungsvorrichtung für aktive kopfstütze
US8783777B2 (en) 2008-01-11 2014-07-22 Ts Tech Co., Ltd. Headrest support structure
JP2011098595A (ja) 2009-11-04 2011-05-19 Toyo Seat Co Ltd 車両用ヘッドレスト
JP5440705B2 (ja) * 2010-08-05 2014-03-12 トヨタ自動車株式会社 車両用シート
JP5720510B2 (ja) * 2011-09-20 2015-05-20 トヨタ自動車株式会社 車両用シート
JP2014008335A (ja) * 2012-07-02 2014-01-20 Toyota Motor Corp ヘッドレスト支持構造
KR101591728B1 (ko) * 2012-07-02 2016-02-04 도요타 지도샤（주） 헤드레스트 지지 구조
EP2995499B1 (en) * 2013-05-08 2019-10-02 Toyota Jidosha Kabushiki Kaisha Headrest supporting structure
JP5814310B2 (ja) * 2013-07-19 2015-11-17 トヨタ自動車株式会社 ヘッドレスト支持構造
JP6196184B2 (ja) * 2014-04-25 2017-09-13 トヨタ紡織株式会社 乗物用シートのヘッドレストの組み付け構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010194246A (ja) * 2009-02-27 2010-09-09 Toyota Boshoku Corp クッション体
WO2010150372A1 (ja) * 2009-06-24 2010-12-29 トヨタ自動車株式会社 車両用シート
JP2011201526A (ja) 2010-03-04 2011-10-13 Namba Press Works Co Ltd ヘッドレスト付車両用シート
JP2011207335A (ja) 2010-03-30 2011-10-20 Ts Tech Co Ltd 車両用シート

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2868232A4

Also Published As

Publication number Publication date
EP2868232A1 (en) 2015-05-06
US10099590B2 (en) 2018-10-16
US20150165945A1 (en) 2015-06-18
KR101598163B1 (ko) 2016-02-26
CN104427913A (zh) 2015-03-18
KR20150011396A (ko) 2015-01-30
CN104427913B (zh) 2016-12-07
IN2014DN11253A (enExample) 2015-10-09
EP2868232A4 (en) 2015-06-03

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