WO2014007201A1 - ヘッドレスト支持構造 - Google Patents
ヘッドレスト支持構造 Download PDFInfo
- Publication number
- WO2014007201A1 WO2014007201A1 PCT/JP2013/068019 JP2013068019W WO2014007201A1 WO 2014007201 A1 WO2014007201 A1 WO 2014007201A1 JP 2013068019 W JP2013068019 W JP 2013068019W WO 2014007201 A1 WO2014007201 A1 WO 2014007201A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- headrest
- seat
- support
- stay
- stays
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
-
- 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—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
- B60N2/803—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
- B60N2/806—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
- B60N2/897—Head-rests with sleeves located in the back-rest for guiding the rods of the head-rest
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2205/00—General mechanical or structural details
- B60N2205/20—Measures for elimination or compensation of play or backlash
Definitions
- the present invention relates to a headrest support structure that supports a headrest by supporting two headrest stays arranged at intervals in the seat lateral direction on a seatback frame.
- the vibration in the front-rear direction of the vehicle seat configured as shown in FIG. 20A can be represented by a two-degree-of-freedom spring-mass model as shown in FIG.
- “m 1 ” represents the equivalent mass of the seat skeleton including the rail and the seat back frame
- “m 2 ” represents the equivalent mass of the headrest
- “K 1 ” indicates the equivalent stiffness of the seat skeleton
- “k 2 ” indicates the equivalent stiffness of the headrest support structure.
- the resonance frequency f n with respect to the vibration in the longitudinal direction of the seat can be expressed by the following expression (1).
- each equivalent stiffness (k 1 , k 2 ) is reduced or each equivalent mass (m 1 , m 2 ) is reduced. It is necessary to increase it.
- two headrest brackets 101 are fixed to the upper part of the seat back frame 100 at intervals in the seat lateral direction.
- Headrest guides 102 are respectively assembled to the left and right headrest brackets 101.
- the headrest 104 is supported by the seat back frame 100 by fitting the two headrest stays 103L and 103R provided on the headrest 104 to the headrest guides 102, respectively.
- the headrest bracket 101 is made of a metal plate bent into a substantially U shape.
- Through holes 105 and 106 through which the headrest guide 102 is inserted are formed in the upper and lower portions of the headrest bracket 101, respectively.
- the through hole 105 at the top of the headrest bracket 101 is a long hole extending in the seat front-rear direction.
- the length of the through hole 105 in the front-rear direction of the seat is significantly longer than the outer diameter of the headrest guide 102 inserted through the through hole 105.
- the through hole 106 formed in the lower part of the headrest bracket 101 is a long hole extending in the seat front-rear direction.
- the length of the through hole 106 in the front-rear direction of the seat is slightly longer than the outer diameter of the headrest guide 102.
- a spring 107 is bridged over the end portion of the through hole 105 in front of the seat.
- the headrest guide 102 is inserted into the through hole 105 in a state where the urging force of the spring 107 is received.
- the headrest guide 102 into which the headrest stays 103L and 103R are inserted tilts in the seat front F and the seat rear R with the bending of the spring 107 with the through hole 106 as a fulcrum. Supported as possible. That is, in this headrest support structure, the headrest 104 is elastically supported by the spring 107 with respect to displacement in the front-rear direction of the seat. Therefore, the support rigidity of the headrest 104 in the front-rear direction of the seat is reduced, and the resonance frequency f n of vibration in the front-rear direction of the vehicle seat is lowered.
- Patent Document 2 is another prior art document related to this case.
- the two headrest stays 103L and 103R protruding below the headrest 104 are usually formed integrally by bending one pipe material into a substantially U shape. In such a configuration, due to manufacturing errors, the axes of the left and right headrest stays 103L and 103R may be displaced as shown in FIG.
- the headrest guide 102 is allowed to tilt to some extent in the longitudinal direction of the seat with respect to the headrest bracket 101 due to the bending of the spring 107. Also in the through hole 106, the headrest guide 102 is provided with a slight allowance in the seat front-rear direction. Therefore, even if some axial deviation occurs in the headrest stays 103L and 103R, the headrest stays 103L and 103R can be assembled for the time being. However, in such a case, the bending of the spring 107 becomes larger than expected, and the support rigidity of the headrest 104 with respect to the displacement in the front-rear direction of the seat increases. For this reason, the resonance frequency f n of the vibration in the front-rear direction of the vehicle seat cannot be set as designed.
- the headrest stays 103L and 103R can be assembled even when the shaft misalignment due to manufacturing errors is large, the allowance in the seat front-rear direction between the headrest guide 102 and the through hole 106 must be large. I will have to. In such a case, the headrest guide 102 rattles and the headrest 104 cannot be properly supported.
- An object of the present invention is to provide a headrest support structure capable of more accurately setting a resonance frequency of a seat against vibrations in the front-rear direction.
- one aspect of the present invention includes two headrest stays that extend downward from a headrest and are spaced apart from each other in the seat lateral direction, and a seatback frame that supports the headrest stay.
- a headrest support structure is provided.
- the headrest stay is tiltable with respect to the seat back frame in a seat front-rear direction orthogonal to the seat lateral direction.
- the headrest support rigidity with respect to the front-rear direction of the seat is smaller than when the headrest stay is outside the range.
- Stay is supported.
- the two headrest stays are coupled so as to be relatively swingable in the front-rear direction of the seat.
- the support rigidity of the headrest with respect to the seatback frame is reduced. Therefore, the headrest support rigidity can be reduced with respect to minute displacement of the headrest in the longitudinal direction of the seat due to vibration transmission from the engine or the vehicle body, and the resonance frequency for vibration in the longitudinal direction of the seat can be reduced.
- the tilting amount of the headrest stay in the front-rear direction with respect to the seatback frame increases beyond such a range, the support rigidity of the headrest with respect to the seatback frame increases. Therefore, for example, when a vehicle undergoes a rear-end collision, if the head of the occupant suddenly moves backward, the head can be reliably received by the headrest to accurately protect the occupant's head and neck. it can.
- the two headrest stays on the left and right are connected to the headrest so that they can swing relative to each other in the longitudinal direction of the seat. Misalignment can be prevented. Therefore, according to the said structure, the setting of the resonant frequency of the sheet
- the aspect includes two brackets provided on the seat back frame corresponding to the headrest stay, and two support members respectively interposed between the bracket and the headrest stay corresponding to the bracket.
- the headrest stay can swing with respect to the corresponding bracket or the headrest stay can swing with respect to the corresponding support member.
- a first portion for biasing the headrest stay backward between the front side of the support member and the bracket is provided above the support member.
- an elastic member is provided, and a second elastic member for urging the headrest stay forward is provided between the rear side of the support member and the bracket at a lower portion of the support member.
- the headrest stay When the headrest stay is swingable with respect to the corresponding support member, the headrest stay is urged rearward between the front side of the headrest stay and the support member at the upper portion of the support member.
- a first elastic member is provided, and a second elastic member for urging the headrest stay forward is provided between the rear side of the headrest stay and the support member at a lower portion of the support member.
- each of the first and second elastic members includes a spring.
- the within the specified range is preferably a range of tilting of the headrest stay until the spring is completely compressed.
- the two headrest stays are preferably formed from different members.
- the two headrest stays are connected to the headrest in a state of being separated from each other.
- each of the headrest stays has an upper portion extending in the seat lateral direction, and the upper portion of the headrest stay is disposed on the same axis.
- the disassembled perspective view which shows the headrest support structure of one Embodiment.
- Side surface sectional drawing which shows the support provided in the headrest support structure of the embodiment, and its periphery.
- the perspective view which shows the headrest stay in those headrest support structures of the embodiment, and those connection structures.
- (A) A cross-sectional view schematically showing an action mode of pressing inside the headrest support structure when a force is applied to the headrest from the front, (b) pressing inside the headrest support structure when a force is applied to the headrest from the rear Sectional drawing which shows an effect
- the graph which shows the relationship between the load of the seat front-back direction applied to a headrest, and the displacement of the seat front-back direction.
- transmits and shows the inside of the conventional headrest which employ
- (A) is a perspective view which shows another example of the spring employable for the said embodiment, (b) is side sectional drawing which shows this another example.
- (A) is a perspective view which shows another example of the spring employable for the said embodiment, (b) is side sectional drawing which shows this another example.
- Side surface sectional drawing which shows another example of the spring which can be employ
- Side surface sectional drawing which shows the support in the modification of the said embodiment which changed the structure of the support structure of a support.
- FIG. 1 is a front view which shows the connection structure of a headrest stay about the modification of the said embodiment which changed the axial support aspect of the headrest stay
- (b) is a perspective view which shows the connection structure of a headrest stay.
- (A) is a front view which shows the connection structure of the headrest stay about the modification of the said embodiment which changed the axial support aspect of the headrest stay
- (b) is a perspective view which shows the connection structure of a headrest stay.
- (A) is a front view which shows the connection structure of a headrest stay about the modification of the said embodiment which changed the axial support aspect of the headrest stay
- (b) is a perspective view which shows the connection structure of a headrest stay.
- FIG. 24 is a side cross-sectional view of the headrest guide and the vicinity thereof, taken along line 23-23 in FIG. 22;
- the perspective view which shows the headrest stay which the axial shift produced in the left-right stay.
- the top view which shows the state at the time of the assembly
- (A) is a side sectional view of the conventional headrest support structure taken along line 26A-26A in FIG. 25, and (b) is a cross-sectional view taken along line 26B-26B in FIG. 25 of the conventional headrest support structure. It is side surface sectional drawing.
- FIGS. 1-10 a headrest support structure according to an embodiment will be described in detail with reference to FIGS.
- the headrest support structure of this embodiment is applied to a vehicle seat.
- the support bracket 11 is fixed to the upper part of the seat back frame 10 at intervals in the lateral direction of the seat.
- the support bracket 11 is made of metal and has a cylindrical shape with a rectangular cross section.
- the support 12 as a support member is inserted into the both support brackets 11 from above the seat.
- the support 12 is made of resin.
- the support 12 is formed with a hole 15 having a circular cross section extending in the vertical direction of the sheet.
- two left and right headrest stays 14L and 14R are provided at intervals in the seat lateral direction.
- the two headrest stays 14L and 14R extend downward from the headrest 13.
- the headrest 13 is supported by the seat back frame 10 by inserting the headrest stays 14L and 14R into the holes 15 of the two supports 12, respectively.
- the two supports 12 are respectively interposed between the support bracket 11 and the corresponding headrest stays 14L and 14R.
- the headrest stays 14L and 14R can swing with respect to the seat back frame 10 in the seat front-rear direction orthogonal to the seat lateral direction.
- left and right headrest stays 14L and 14R are formed of separate members.
- the headrest stays 14L and 14R are connected to a resin insert 20 built in the headrest 13 so as to be swingable in the seat front-rear direction.
- the headrest stays 14L and 14R are connected to the insert 20 in a state of being separated from each other.
- a spring 16 is provided on the upper part of the support 12 in the portion inserted into the support bracket 11 in the front F of the seat.
- the spring 16 is formed so as to function as a leaf spring by forming a part of the side wall of the support 12 in an arch shape protruding toward the front F of the seat.
- the spring 16 corresponds to a first elastic member that biases the headrest stays 14L and 14R rearward.
- a bead 17 is fixed to the outer peripheral surface of the support 12 at the rear side R of the portion where the spring 16 is formed.
- the bead 17 is made of the same material as the support 12 and is formed so as to be in surface contact with the inner peripheral surface of the support bracket 11.
- the bead 17 closes the gap between the inner peripheral surface of the support bracket 11 and the outer peripheral surface of the support 12 in the seat front-rear direction, so that the spring 16 is disposed in a compressed state.
- a spring 18 is formed at the lower part of the support 12 at the portion inserted into the support bracket 11 at the front F of the seat. Similarly to the spring 16, the spring 18 is also formed so as to function as a leaf spring by forming a part of the side wall of the support 12 in an arch shape protruding to the rear side R of the seat. The spring 18 corresponds to a second elastic member that biases the headrest stays 14L and 14R forward.
- a bead 19 is fixed to the outer peripheral surface of the support 12 at the rear side R of the portion where the spring 18 is formed.
- This bead 19 is also made of the same material as the support 12.
- the bead 19 closes the gap between the inner peripheral surface of the support bracket 11 and the outer peripheral surface of the support 12 in the front-rear direction of the seat, so that the spring 18 is also arranged in a compressed state.
- each of the left and right headrest stays 14L and 14R is made of a metal pipe material, and is formed in a substantially L shape having an upper part bent in the seat lateral direction.
- Each of the headrest stays 14L and 14R is pivotally supported by the insert 20 at the upper portion bent in the seat lateral direction.
- the upper portions of the headrest stays 14L and 14R are disposed on the same axis. That is, the left and right headrest stays 14L and 14R are connected via the insert 20 so as to be relatively swingable in the front-rear direction of the seat.
- the relationship between the load in the front-rear direction of the seat acting on the headrest 13 and the displacement of the headrest 13 in the front-rear direction of the seat with respect to the load is as shown in FIG. That is, in this headrest support structure, when the amount of tilting of the headrest stays 14L, 14R relative to the seatback frame 10 in the seat front direction is within a specified range, the headrest 13 in the seat front-rear direction compared to when the headrest stays 14L, 14R are outside the range. The headrest stays 14L and 14R are supported so that the support rigidity of the head is reduced.
- the headrest 13 In the initial state, that is, in the state where no external force is applied to the headrest 13, the headrest 13 is supported so as to be positioned at the position of the rearmost R of the seat in the range where the support rigidity is small.
- the prescribed range is a range of tilting of the headrest stays 14L and 14R until the springs 16 and 18 are completely compressed.
- the support rigidity of the headrest 13 can be reduced with respect to minute displacement in the front-rear direction of the headrest 13 due to vibration transmission from the engine or the vehicle body, and the front-rear direction of the seat can be reduced.
- the resonance frequency with respect to vibration can be reduced.
- the displacement of the headrest 13 to the rear of the seat R it shows high support rigidity. For example, when the vehicle undergoes a rear-end collision, The head can be securely received by the headrest, and the occupant's head and neck can be properly protected.
- the shafts of the left and right headrest stays 14L and 14R are shifted in the front-rear direction of the seat. If the seat back frame 10 is assembled, desired support characteristics of the headrest 13 cannot be obtained. That is, in the state where the above-described shaft misalignment has occurred, even if one of the headrest stays 14L and 14R can be properly inserted into the hole 15 of the support 12, the other side has the shaft and hole of the headrest stay 14L and 14R. The 15 axis is displaced.
- the support 12 is inclined with respect to the support bracket 11, the amount of compression of the springs 16 and 18 at the initial position changes, and the beads 17 and 19 and the support are supported.
- a gap may be formed between the bracket 11 and the inner peripheral surface, and desired support characteristics cannot be obtained. As a result, the resonance frequency of the seat against vibration in the front-rear direction may not be set as designed.
- the two left and right headrest stays 14L and 14R are connected to the headrest 13 so as to be relatively swingable in the seat front-rear direction. Therefore, when the seat back frame 10 is assembled, it is possible to prevent the axial displacement of the headrest stays 14L and 14R in the front-rear direction of the seat. Even if the mounting positions of the support bracket 11 and the support 12 are shifted due to manufacturing errors, the axes of the holes 15 formed in the left and right supports 12 may be shifted due to the relative swinging of the headrest stays 14L and 14R. Can be absorbed.
- Patent Document 2 of the prior art also describes a headrest in which two headrest stays on the left and right sides are provided so as to be able to swing relative to each other.
- a core pad 31 having a higher coefficient of restitution than the surroundings is disposed at the center thereof.
- the upper portions of the left and right headrest stays 32 ⁇ / b> L and 32 ⁇ / b> R are insert-molded when the core pad 31 is formed.
- the headrest stays 32L and 32R can certainly be relatively swung through the elastic deformation of the core pad 31.
- the upper portions of the headrest stays 32 ⁇ / b> L and 32 ⁇ / b> R rotate according to the elastic deformation of the core pad 31. For this reason, the load applied to the headrest 30 may not be reliably received by the highly rigid headrest stays 32L and 32R.
- the left and right headrest stays 14L and 14R are allowed to swing relative to each other in the longitudinal direction of the seat, but the insert 20 is maintained so that the position of the swing shaft is maintained. Are connected to each other. Therefore, the load applied to the headrest 30 can be reliably received by the high-stiffness headrest stays 32L and 32R. For example, when the vehicle undergoes a rear-end collision, the occupant's head is more reliably received by the headrest 13. Can do.
- the headrest stays 14L and 14R are supported so that the support rigidity of the head is reduced. Therefore, the support rigidity of the headrest 13 can be reduced with respect to minute displacement in the front-rear direction of the headrest 13 due to vibration transmission from the engine or the vehicle body, and the resonance frequency with respect to vibration in the front-rear direction of the seat can be reduced. Can do.
- the headrest stays 14L and 14R are supported so as to be positioned at the position of the rearmost seat R in the range where the support rigidity is small. Therefore, while reducing the resonance frequency with respect to the vibration in the front-rear direction of the seat, a high support rigidity is secured for the displacement of the headrest 13 toward the rear of the seat R. For example, when the vehicle receives a rear-end collision, The head can be reliably received by the headrest 13.
- the left and right headrest stays 14L and 14R are connected to the headrest 13 so as to be capable of relative swinging in the seat front-rear direction. Therefore, it is possible to prevent the shaft from being displaced due to a manufacturing error of the two headrest stays 14L and 14R when assembled to the seat back frame 10. Further, deviations in the mounting positions of the support bracket 11 and the support 12 due to manufacturing errors can be absorbed by the relative swinging of the headrest stays 14L and 14R. Therefore, the headrest stays 14L and 14R can be appropriately assembled to accurately set the resonance frequency of the seat against vibrations in the front-rear direction.
- leaf springs 16 and 18 provided on the support 12 leaf springs formed by forming part of the side walls of the support 12 in an arch shape protruding outward are employed. It is also possible to employ other springs for the springs 16 and 18. For example, even if a cantilever leaf spring 40 formed by cutting and raising a part of the side wall of the support 12 as shown in FIG. 8A and FIG. good. Further, as shown in FIGS. 9A and 9B, the elastic member 42 made of a material having a high elastic modulus such as urethane foam is attached to the side wall of the support 12, whereby the elastic member 42 is attached to the spring 16. , 18 may function. In addition, as shown in FIG. 10, a coil spring 43 may be attached to the side wall of the support 12.
- the beads 17 and 19 are attached to the outer wall of the support 12, but the beads 17 and 19 may be integrally formed with the support 12.
- the beads 17 and 19 are made of the same material as that of the support 12, but the beads 17 and 19 may be made of any material as long as the material is sufficiently stiffer than the springs 16 and 18. You may make it form.
- the spring 16 is provided at the front portion of the support 12 above the seat, the bead 17 is provided at the rear portion of the seat, the bead 19 is provided at the front portion of the lower portion of the seat, and the rear portion of the lower portion of the seat.
- a spring 18 is provided.
- the arrangement of these members 16 to 19 can be changed as follows, for example.
- springs 44, 45, 46, and 47 are provided at portions of the support 12 at the front of the seat upper part, the rear of the upper part of the seat, the front of the lower part of the seat, and the rear of the lower part of the seat. Springs are provided at all four points where the support 12 and the support bracket 11 are in contact with each other.
- the spring constants k2 of the springs 45 and 46 provided in the rear part of the seat 12 and the front part of the lower part of the support 12 are larger than the spring constants k1 of the springs 44 and 47 provided in the front part of the upper part of the seat and the rear part of the lower part of the seat. Is set to be large. Even in such a case, the support rigidity with respect to the forward displacement of the headrest 13 can be reduced, and the support rigidity with respect to the forward displacement of the headrest 13 can be increased.
- the support 12 is provided with a spring and a bead that receive a pressing force due to the tilting of the headrest stays 14L and 14R when the headrest 13 is displaced in the longitudinal direction of the seat.
- These pressure receiving members may be provided on the inner peripheral surface of the support bracket 11.
- the spring 50 is provided in the front part of the seat upper portion on the inner peripheral surface
- the bead 51 is provided in the rear part of the seat upper part
- the bead 52 is provided in the front part of the lower part of the seat. Is provided
- a spring 53 is provided at a position behind the lower part of the seat.
- the pressing force is applied to the spring when the headrest stays 14L and 14R and the support 12 are tilted toward the seat front F
- the pressing force is applied to the bead when the headrest stays 14L and 14R are tilted toward the seat rear R. become. Therefore, also in such a case, the support rigidity with respect to the forward displacement of the headrest 13 can be reduced, and the support rigidity with respect to the forward displacement of the headrest 13 can be increased.
- a pressure receiving member such as a spring or a bead can be provided between the hole 15 of the support 12 and the headrest stays 14L and 14R.
- a spring 56 is provided at a front portion of the seat upper portion of the inner peripheral surface of the hole 15 formed in the support 12, a bead 57 is provided at a rear portion of the seat upper portion, and a front portion of the lower portion of the seat is provided.
- a bead 58 is provided at the site, and a spring 59 is provided at the site behind the lower part of the seat.
- a spring 62 is provided in a front part of the seat upper portion of the outer peripheral surface of the headrest stays 14L and 14R, a bead 63 is provided in a rear part of the seat upper part, and a bead 64 is provided in a front part of the lower part of the seat.
- the spring 65 is provided in the site
- the headrest 13 when the displacement amount of the headrest 13 in the front-rear direction of the seat is within a certain range, the headrest 13 is supported so that the support rigidity is smaller than when the displacement is outside the range.
- the seatrest When no external force is applied to the headrest 13, the seatrest is positioned at the position behind the seat rear R in the range where the support stiffness is small, thereby ensuring the support rigidity against the displacement of the headrest 13 toward the seat rear R.
- the resonance frequency with respect to the vibration in the front-rear direction is reduced.
- the support rigidity is reduced to prevent the seatrest 13 from being slightly displaced in the longitudinal direction of the seat due to vibration transmission.
- the resonance frequency with respect to the vibration in the front-rear direction can be reduced.
- the support rigidity can be increased. Even in such a case, if the shafts of the left and right headrest stays 14L and 14R are displaced in the front-rear direction of the seat or the mounting positions of the support bracket 11 and the support 12 are displaced due to manufacturing errors, the initial position of the headrest 13 is within the above range.
- the resonance frequency as designed cannot be obtained.
- both the left and right headrest stays 14L and 14R are connected to the insert 20 so as to be swingable in the seat front-rear direction. Only one of the left and right headrest stays 14L, 14R may be connected to the insert 20 so as to be swingable in the seat longitudinal direction, and the other may be connected so as not to be swingable.
- the left headrest stay 14L is connected to the insert 68 so as to be swingable in the front-rear direction of the seat, but the right headrest stay 14R is rocked. It is immovably connected to the insert 68.
- the left headrest stay 14L swings in the seat front-rear direction with respect to the insert 68
- the left headrest stay 14L swings in the seat front-rear direction also with respect to the right headrest stay 14R. Therefore, relative swinging of both the seats in the front-rear direction is allowed.
- the wrap margin in the insert 68 of the headrest stay 14R supported in a swingable manner that is, the length of the supported portion can be made longer, and the swing shaft can be held more securely.
- the rigidity of the headrest 13 when a large force is applied can be increased.
- the left and right headrest stays 14L and 14R are coaxially connected to the insert 20 so as to be able to swing in the front-rear direction of the seat. You can also.
- the right headrest stay 14R is connected to be swingable in the front-rear direction of the seat at a position above the seat relative to the left headrest stay 14L.
- the left and right headrest stays 14L, 14R can be relatively swung in the front-rear direction of the seat.
- the lap allowance of the head rest stays 14L and 14R in the insert 68 can be made longer, and the rigidity of the headrest 13 can be increased when a large force is applied by holding the swing shaft more reliably. Can be increased.
- the left and right headrest stays 14L and 14R are connected via the insert 20 so as to be relatively swingable in the seat front-rear direction, but they may be directly connected.
- the diameter of the tip portion of the left headrest stay 70L is formed small, and the tip portion of the left headrest stay 70L is the tip portion of the right headrest stay 70R. It is inserted so that it can rotate. Even in such a case, the relative swinging of the headrest stays 70L and 70R can suppress changes in support characteristics due to manufacturing errors of the members, thereby enabling more accurate setting of the resonance frequency of the seat against vibrations in the front-rear direction. .
- the left and right headrest stays 71 ⁇ / b> L and 71 ⁇ / b> R are formed so as to be bent once again in the lateral direction of the seat and then bent again toward the lower side of the seat. And in the part bent in the sheet
- the insert 72 in the example shown in FIG.
- the left and right headrest stays 73L and 73R are formed so as to be bent once again in the lateral direction of the seat at the upper portion of the seat and then bent again toward the upper portion of the seat. .
- both headrest stays 73L and 73R are rotatably supported by the insert 74 at the portion bent in the seat lateral direction.
- the left and right headrest stays 70L, 70R, 71L, 71R are respectively connected to the inserts 72, 74 so as to be able to swing in the seat longitudinal direction, and are allowed to swing relative to each other in the seat longitudinal direction. Is done.
- the length of the portion of each headrest stay 70L, 70R, 71L, 71R built in the headrest 13 can be increased, so that the support rigidity of the headrest 13 when a large force is applied is increased. It can be further enhanced.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
なお、上記実施形態は、以下のように変更することもできる。
Claims (9)
- ヘッドレスト支持構造であって、
ヘッドレストから下方に延び、シート横方向に間隔を置いて配置された2本のヘッドレストステーと、
前記ヘッドレストステーを支持するシートバックフレームとを備え、
前記ヘッドレストステーはシート横方向と直交するシート前後方向に前記シートバックフレームに対して傾動可能であり、前記シートバックフレームに対する前記ヘッドレストステーのシート前後方向の傾動量が規定の範囲内にあるときには、その範囲外にあるときに比してシート前後方向に対する前記ヘッドレストの支持剛性が小さくなるように前記ヘッドレストステーが支持され、
前記ヘッドレストにおいて、前記2本のヘッドレストステーがシート前後方向に相対揺動可能に連結されてなる、ヘッドレスト支持構造。 - 前記ヘッドレストステーに対応して前記シートバックフレームに設けられた2つのブラケットと、
前記ブラケットと対応するヘッドレストステーとの間にそれぞれ介在される2つのサポート部材とを備え
前記サポート部材が、対応するブラケットに対して揺動可能であるか、または前記ヘッドレストステーが、対応するサポート部材に対して揺動可能である、請求項1に記載のヘッドレスト支持構造。 - 前記サポート部材が、対応するブラケットに対して揺動可能である場合、
前記サポート部材の上部において、前記サポート部材の前側と前記ブラケットとの間には前記ヘッドレストステーを後方に付勢する第1の弾性部材が設けられ、
前記サポート部材の下部において、前記サポート部材の後側と前記ブラケットとの間には前記ヘッドレストステーを前方に付勢する第2の弾性部材が設けられる、請求項2に記載のヘッドレスト支持構造。 - 前記ヘッドレストステーが、対応するサポート部材に対して揺動可能である場合、
前記サポート部材の上部において、前記ヘッドレストステーの前側と前記サポート部材との間には前記ヘッドレストステーを後方に付勢する第1の弾性部材が設けられ、
前記サポート部材の下部において、前記ヘッドレストステーの後側と前記サポート部材との間には前記ヘッドレストステーを前方に付勢する第2の弾性部材が設けられる、請求項2に記載のヘッドレスト支持構造。 - 前記第1及び第2の弾性部材の各々がばねを含む、請求項3又は4に記載のヘッドレスト支持構造。
- 前記規定の範囲内とは、前記ばねが完全に圧縮されるまでの前記ヘッドレストステーの傾動の範囲である、請求項5に記載のヘッドレスト支持構造。
- 前記2本のヘッドレストステーは別々の部材から形成されている、請求項1~6の何れか一項に記載のヘッドレスト支持構造。
- 前記2本のヘッドレストステーは互いに離間した状態で前記ヘッドレストに連結されている、請求項7に記載のヘッドレスト支持構造。
- 前記ヘッドレストステーの各々はシート横方向に延びる上部を有し、前記ヘッドレストステーの上部は同じ軸線上に配置されている、請求項1~8の何れか一項に記載のヘッドレスト支持構造。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/406,358 US20150145309A1 (en) | 2012-07-02 | 2013-07-01 | Headrest support structure |
KR20147035459A KR20150009596A (ko) | 2012-07-02 | 2013-07-01 | 헤드레스트 지지 구조 |
EP13813411.9A EP2868233A4 (en) | 2012-07-02 | 2013-07-01 | HEADREST SUPPORT STRUCTURE |
CN201380033352.0A CN104379026A (zh) | 2012-07-02 | 2013-07-01 | 头枕支承结构 |
Applications Claiming Priority (2)
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 |
Publications (1)
Publication Number | Publication Date |
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WO2014007201A1 true WO2014007201A1 (ja) | 2014-01-09 |
Family
ID=49881957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/068019 WO2014007201A1 (ja) | 2012-07-02 | 2013-07-01 | ヘッドレスト支持構造 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150145309A1 (ja) |
EP (1) | EP2868233A4 (ja) |
JP (1) | JP2014008335A (ja) |
KR (1) | KR20150009596A (ja) |
CN (1) | CN104379026A (ja) |
WO (1) | WO2014007201A1 (ja) |
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EP2868232A4 (en) * | 2012-07-02 | 2015-06-03 | Toyota Motor Co Ltd | SUPPORT STRUCTURE FOR HEADREST |
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JP6238453B2 (ja) * | 2014-03-19 | 2017-11-29 | 日本テクニカ株式会社 | ヘッドレストサポート |
US10399474B2 (en) * | 2016-03-02 | 2019-09-03 | Adient Luxembourg Holding S.a.r.l. | Multi-adjustable head restraint |
JP6819620B2 (ja) * | 2018-01-23 | 2021-01-27 | トヨタ自動車株式会社 | 車両用シート及び車両 |
JP7003872B2 (ja) * | 2018-08-07 | 2022-01-21 | トヨタ自動車株式会社 | 車両用シート |
JP7091959B2 (ja) * | 2018-09-12 | 2022-06-28 | トヨタ自動車株式会社 | 車両用シート |
US11273746B1 (en) * | 2021-03-17 | 2022-03-15 | GM Global Technology Operations LLC | Automotive seat headrest support |
JP7436728B1 (ja) | 2023-04-28 | 2024-02-22 | 株式会社タチエス | ヘッドレストホルダ及びその固定構造 |
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GB2574348B (en) * | 2017-03-13 | 2022-05-11 | Ts Tech Co Ltd | Headrest guide and vehicle seat |
Also Published As
Publication number | Publication date |
---|---|
EP2868233A4 (en) | 2015-08-05 |
KR20150009596A (ko) | 2015-01-26 |
US20150145309A1 (en) | 2015-05-28 |
EP2868233A1 (en) | 2015-05-06 |
JP2014008335A (ja) | 2014-01-20 |
CN104379026A (zh) | 2015-02-25 |
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