CN101243925B - Headrest - Google Patents
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- CN101243925B CN101243925B CN2008100056637A CN200810005663A CN101243925B CN 101243925 B CN101243925 B CN 101243925B CN 2008100056637 A CN2008100056637 A CN 2008100056637A CN 200810005663 A CN200810005663 A CN 200810005663A CN 101243925 B CN101243925 B CN 101243925B
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Abstract
A movable headrest provided on a seat back of a seat mounted in a vehicle and capable of changing a position from a normal position to an emergency position, the headrest including a headrest support supported by the seat back and having a guide section, a rotary support member pivotally supported by the headrest support and rotatable between a first position corresponding to the normal position and a second position corresponding to the emergency position, and a headrest body pivotally supported by the rotary support member and having a headrest body support which moves along the guide section, whereby as the rotary support member rotates relative to the headrest support, the position of the headrest body relative to the headrest support changes while the headrest body support moves along the guide section.
Description
Technical field
The present invention relates to a kind of headrest, and more especially relate on a kind of back of seat that is arranged on seat and its position is changed over the movable headrest of emergency location when rear impact occurring from the normal position, neck that prevents the passenger thus etc. suffers damage.
Background technology
Headrest is arranged on the top of back of seat of seat, so that receive the passenger's who comprises chaufeur head at vehicle when the rear portion is subjected to clashing into, prevents so-called " whipping " damage.In recent years, the multiple movable headrest of strengthening the property (also being called " active head restraint ") with protection head, neck etc. has been proposed.When the rear portion was subjected to clashing into, this movable headrest changed the position of the headrest main body that receives head of passenger forward at once, protected passenger's head, neck or similar position thus.
Movable headrest generally includes the position change mechanism with the desired location (after this be called " emergency location ") of headrest main body when the position change of normal use location when (after this being called " normal position ") becomes rear impacts to occur.Movable headrest comprises that also the headrest main body that will be transformed into emergency location remains on the position holding mechanism of emergency location.Position holding mechanism prevents from oppositely to be put back into the normal position because the impact of bump is transformed into the headrest main body of emergency location, makes the headrest main body can keep receiving head of passenger.In addition, movable headrest comprises the position gigback of the maintenance of unclamping the headrest body position that keeps by position holding mechanism as required.The position gigback makes the headrest main body that moves to emergency location turn back to the normal position.Such movable headrest discloses in for example Japanese unexamined patent open file NO.2002-142910 (patent document 1), Japanese unexamined patent open file NO.2006-264431 (patent document 2), the Japanese PCT open file NO.2006-511398 of country (patent document 3).
The movable headrest of each that discloses in patent document 1 and the patent document 2 position change mechanism adopts the bar linkage structure with a plurality of arm shape link components that link together.In position change mechanism, head of passenger impinges upon the impulsive force that produces when headrest is gone up and is applied directly on the single link component.When impulsive force was applied on the headrest main body from top or sidepiece, single link component received impulsive force, the problem that causes the link component distortion or damage.When therefore link component is out of shape or damages, break down in the operation of position change mechanism, make the headrest main body can not turn back to original normal position.
The position holding mechanism of the movable headrest that discloses in the patent document 3 also comprise with the fan-shaped locking bolt of the action associative operation of headrest main body partly and the bar part that combines with the locking bolt part.More especially, the position holding mechanism structure of patent document 3 is constructed as follows, make when the position change of headrest main body, locking bolt partly rotates, and the headrest main body becomes emergency location with its position change, make described part and bar partial engagement, thereby the main body of will resting the head on remains on the emergency location.But this position holding mechanism makes cause the oversize of whole headrest, and weight increases by the oversize of fan-shaped locking bolt part, bar part.
The headrest main body that the movable headrest of patent document 3 is designed to be transformed into emergency location turns back to the normal position, and the special-purpose resetting tool of the hold mode of position holding mechanism by independent preparation partly breaks away from the locking bolt part from bar and unclamp.In addition, returning headrest during main body, the workman need turn back to the normal position with the hand main body of will rest the head on, and the resetting tool that keeps by the another hand partly partly breaks away from locking bolt from bar simultaneously.Therefore, return the headrest main body operation very loaded down with trivial details.In addition, because locking bolt partial sum bar partly is arranged in the headrest main body, the workman does not have two parts to be broken away from mutually under the situation of resetting tool in hand, the headrest main body can not be turned back to the normal position.
As mentioned above, each traditional movable headrest combines position change mechanism, position holding mechanism, position gigback etc., and excessive, the weight that makes the quantity of parts increase increases and the headrest cost increases.For fear of movable rest the head on oversize of tradition, multiple headrest has been proposed, the member of formation of wherein resting the head on usually is divided into the front and rear part.But the releasable headrest has the parting line that is formed on its appearance surfaces, and worth choosing from angle attractive in appearance.In addition, the releasable headrest makes external substance enter inside from the boundary member of the headrest member of formation of separation, with the operative interventions of each mechanism.Therefore, the releasable headrest needs other member, and for example lid enters to prevent external substance, causes other cost to increase.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of headrest, the position of the main body of wherein will resting the head on changes to the position change mechanism of emergency location from the normal position, the main body of will resting the head on remains on tightly locational position holding mechanism and has simple structure, and realized that size reduces, the improvement of weight saving, cost reduction and outward appearance and operating characteristic.
In order to realize this purpose, the invention provides a kind of movable headrest that is arranged on the back of seat that is installed in seat and the position can be changed over emergency location from the normal position, and headrest of the present invention comprises:
By back of seat supporting and headrest supporting member with guiding segments;
By the headrest supporting member pivot supporting and and the corresponding primary importance in normal position and and the corresponding second place of emergency location between the rotating support member that rotates;
By rotating support members pivot supporting and have the headrest main body of the headrest body abutment part that moves along guiding segments, thus when rotation supporting part rotates with respect to the headrest supporting member, the headrest main body is with respect to the position change of headrest supporting member, and the body abutment of resting the head on simultaneously part moves along guiding segments.
Description of drawings
Fig. 1 is expression is transformed into emergency location according to a headrest of the present invention vertical cross-section lateral plan;
Fig. 2 is the vertical cross-section lateral plan that expression remains on the headrest on the normal position;
Fig. 3 is the vertical cross-section front elevation that expression remains on the headrest on the normal position;
Fig. 4 is the transparent view of the method for expression assembled head pillow supporting member, rotating support member and locking component;
Fig. 5 is that the expression core of will rest the head on is attached at the partial, exploded perspective view of the method on the supporting member of resting the head on;
Fig. 6 is the transparent view of putting upside down of headrest main body, and expression is fixed on the lockplate of the support on the headrest main body and the assembled relation between the compression coil spring;
Fig. 7 A is the transparent view of each lockplate of expression in the position of headrest main body when being positioned at the normal position, and Fig. 7 B is that expression is transformed into and makes the transparent view of headrest main body of each lockplate and the corresponding second engagement recesses partial engagement on the emergency location;
Fig. 8 A is partial cross section's enlarged view of Fig. 7 A, and Fig. 8 B is the partial enlarged view of Fig. 7 B;
Fig. 9 A is that expression is moved so that partial cross section's enlarged view of the lockplate that its edge joint part is partly broken away from from second engagement recesses; And Fig. 9 B is partial cross section's enlarged view that expression turns back to entopic headrest main body;
Figure 10 is the vertical side view of expression headrest main body between normal position and emergency location;
Figure 11 is the vertical cross-section lateral plan that expression is installed in the headrest on the back of seat; And
Figure 12 is the vertical cross-section front elevation that expression is installed in the headrest on the back of seat.
The specific embodiment
Now describe according to headrest of the present invention by preferred embodiment with reference to the accompanying drawings.In an embodiment, the sidepiece that receives passenger's's (be arranged in the anterior of seat S and in Figure 11 left side) head is the front side of headrest HR.
Shown in Figure 11 and 12, the headrest HR of this embodiment is installed on the back of seat S1, and wherein support column 14 is installed in from the top in the pillar supporting member 120 of top surface inner opening of back of seat S1.Headrest HR mechanical connection is on the pressure receiving mechanism on the inboard that is arranged in back of seat S1 (rear impacts detecting device) 100, as describing subsequently.Thereby when vehicle was subjected to rear impacts and the passenger is pressed back of seat S1 and be applied to pressure on the pressure receiving mechanism 100, headrest HR was transformed into its position on the emergency location of representing by solid line from the normal position that the two point dotted line of Fig. 1 is represented.
Shown in Fig. 2 and 3, headrest HR have via support column 14 by back of seat S1 supporting headrest supporting member 10 and be arranged in headrest main body 12 on the headrest supporting member 10.Headrest main body 12 is connected on the fixed bearing member 16 of conduct headrest supporting member 10 parts via the rotating support member 50 of the M of position change mechanism that describes subsequently.Headrest main body 12 comprises the headrest body abutment part 34A that is provided with sliding type with respect to the support column 14 that constitutes headrest supporting member 10.Therefore, when rotating support member 50 rotated, headrest main body 12 was slided along support column 14, so that the position is transformed into emergency location from the normal position.
Shown in Figure 4 and 5, headrest supporting member 10 has two support columns 14 that hang at the place, both sides of the fixed bearing member 16 that is formed from steel downwards.The center support part 14B (guiding segments) that each support column 14 comprises the lower support part 14A that is installed in the described pillar supporting member 120, turn forward towards its top from the upper end of lower support part 14A at a predetermined angle with respect to back of seat 14A and the approximate vertical that makes progress from the upper end of middle supporting part 14B are extended and are fixed on upper support part 14C on the fixed bearing member 16.Support column 14 can be by a pipe component being bent to the single member that U-shaped roughly obtains.
Shown in Fig. 3 and 4, four first engagement recesses parts 18 are formed in the lower support part 14A of support column 14 with predetermined space on the length direction of support column 14.Each first engagement recesses part 18 has the notch geometry that has upper bond step and lower tilt surface.The first engagement recesses part 18 engages the joint protrusion (not shown) that is arranged in the pillar supporting member 120, makes headrest HR can regulate with respect to the height and position of back of seat S1.
Shown in Fig. 3 and 7, one second engagement recesses part 20 and three the 3rd engagement recesses part (the 3rd bonding part) 21 end wises are internally in predetermined space in the surface of center support part 14B of support column 14.The second engagement recesses part 20 and the 3rd engagement recesses part 21 constitute the position holding mechanism H that describes subsequently.The second engagement recesses part 20 has identical notch geometry separately with the 3rd engagement recesses part 21, and its inclined surface is relative with the part of the first engagement recesses part 18.Particularly, as shown in Figure 8, the second engagement recesses part 20 and each three the 3rd engagement recesses part 21 have joint step 20A, 21A that is positioned at downside (the most advanced and sophisticated side of support column 14) and sloping portion (leader) 20B and the 21B that is positioned at upside (on fixed bearing member 16 sides) separately.Be arranged on lockplate (engagement member) 80 in the headrest supporting member 10 can the mode of unclamping engaging the second engagement recesses part 20 and second notch part 21.As describing subsequently like that, when the normal position moved to emergency location, lockplate 80 slided and the sloping portion 21B of relevant the 3rd engagement recesses part 21 of moving contact in headrest main body 12, therefore made the main body 12 of resting the head on move to emergency location.Lockplate 80 engages the joint step 20A of the second engagement recesses part 20 and any one of 21A or the 3rd engagement recesses part 21 when headrest main body 12 moves to from the normal position that head of passenger impinges upon on the headrest main body 12 process of emergency location, and restriction headrest main body 12 turns back to the normal position.As shown in Figure 1, the second engagement recesses part 20 at the uppermost position place of support column 14 is arranged on the position that its position change is formed joints during to emergency location by lockplate 80 when headrest main body 12.
Shown in Fig. 3 and 4, fixed bearing member 16 forms by for example steel plate deep-draw, and the flange along periphery is set, and is not easy owing to receiving intensity and the rigidity that impulsive force is out of shape so that have.A pair of first support holes 22 that its axis horizontal is aimed at is drilled in the upper wall portion of the left and right sides of fixed bearing member 16.First axial component 46 inserts and is bearing in first support holes 22.Tapped bore 24 end wises are arranged in the left and right sides lower wall part of fixed bearing member 16, and the screw 25 that support 74 is fixed on the fixed bearing member 16 screws in tapped bore 24 (Fig. 4) separately.In addition, the elongated flange portion 26 of level is formed on the anterior upper periphery place of fixed bearing member 16.As shown in Figure 1, when rotating support member 50 became the second place (describing subsequently) with its position change, flange portion 26 abutted against first of rotating support member 50 and abuts on the surface 56, further rotates so that prevent rotating support member 50.As shown in Figure 4, notch part 27 be formed on fixed bearing member 16 about the part in.Second arm portion 66 of first torsion spring (wheel word) 60 of Miao Shuing is by stretching out forward and abutting and support in abutting connection with the protrusion 28 of notch part 27 separately subsequently.
Shown in Fig. 1-3 and 5, headrest main body 12 comprises crust 42, has the headrest core 30 of rigidity and is arranged on the foams 44 of resting the head between core 30 and the crust 42.Headrest core 30 is inj ection molded article of being made by synthetic resin, comprises the later half main body 32 on preceding half main body 31 that is positioned at headrest HR front side and the rear side that is positioned at headrest HR.Headrest core 30 forms inner hollow by two and half main bodys 31 and 32 are assembled into single parts.As shown in Figure 5, the mounting portion 32A of band groove forms along the edge that abuts part of later half main body 32, and the mounting portion 31A that stretches out is along the edge formation that abuts part of preceding half main body 31.When the mounting portion 32A of band groove was installed together with the mounting portion 31A that stretches out, headrest core 30 was assembled and very close to each other along the boundary member between half main body 31 and 32.
As shown in Figure 5, support column 14 inserts in the bottom wall portion 30A that the patchhole 34 that passes wherein is formed on headrest core 30 separately.The annular headrest body abutment part 34A that moves along the center support part 14B of support column 14 forms around each patchhole 34.Second support holes 36 is formed in the vertical wall segments at the left and right sides place that is positioned at preceding half main body 31.Second axial component 48 inserts and is bearing in second support holes 36, so that turn and support pivotally rotating support member 50.On the inner wall surface of the front wall section of preceding half main body 31, a plurality of horizontal convex ridge 38 vertically forms with predetermined space, and a plurality of vertical convex ridges 40 form with the predetermined space level in addition.This prevent to rest the head on main body 12 distortion and damage when head of passenger impinges upon headrest main body 12.Each vertical convex ridge 40 abuts against when being configured at rotating support member 50 its position change to the second place and is arranged on second on the rotating support member 50 and abuts on the surface 58.
Shown in Fig. 3-5, the rotating support member 50 that constitutes the position change M of mechanism is the single horizontal slender members that form by synthetic resin material injection-molded.Rotating support member 50 has to be enough to impinge upon indeformable or intensity and the rigidity damaged under the situation that headrest receives impulsive force during HR in head of passenger.When the front side alignment of rotating support member 50 and fixed bearing member 16 (seeing Fig. 2 and 3), the paired supporting part 52 of ear shape is arranged on the top surface of rotating support member 50 at the left and right sides place of wall part with stretching out.First axial component 46 inserts the first through hole 52A that passes wherein and is drilled in supporting part 52, and its horizontal axis is aimed at mutually.Therefore, rotating support member 50 is arranged on the fixed bearing member 16 pivotally by first axial component 46 that inserts two through hole 52A.This makes rotating support member 50 rotate about 90 degree so that rotate between the second place of stretching out forward (Fig. 1) in the primary importance of aiming at the front surface of fixed bearing member 16 (Fig. 2 and 3) with respect to fixed bearing member 16 around first axial component 46.During in primary importance, headrest HR is on the normal position, and when rotating support member 50 moved to the second place, the HR that rests the head on so moved to emergency location at rotating support member 50.
As shown in Figure 4, a pair of jut 54 is formed on the front surface of two lower portion of rotating support member 50.Second axial component 48 inserts in each the comfortable jut 54 of the second through hole 54A that passes wherein and is drilled to.Rotating support member 50 is via the preceding half main body 31 pivot supportings of second axial component 48 in the insertion second through hole 54A by headrest core 30, so that rotate with respect to the main body 12 of resting the head on.Second axial component 48 is arranged in and leaves first axial component, 46 predetermined axial distance.During in primary importance, as shown in Figure 2, second axial component 48 roughly is positioned under first axial component 46 at rotating support member 50.When primary importance turned to the second place, as shown in figure 10, second axial component 48 was along around the arching trajectory of first axial component 46 forward and upward movement at rotating support member 50.During in the second place, as shown in Figure 1, second axial component 48 roughly is positioned at the level front portion of first axial component 46 at rotating support member 50.
As shown in Figure 4, the protrusion 55 that extends about is set in place on the front surface portion of the rotating support member 50 on the primary importance with stretching out.The top surface of protrusion 55 forms shown in Figure 1 first and abuts surface 56.During in the second place, first abuts surface 56 abuts against on the flange portion 26 of fixed bearing member 16 at rotating support member 50.The basal surface of rotating support member 50 of location primary importance partly forms shown in Figure 1 second and abuts surface 58.At rotating support member 50 during in the second place, second abuts surface 58 abuts against on the vertical convex ridges 40 in preceding half main body 31 that is formed on headrest core 30.
Shown in Fig. 1-5, rotating support member 50 is arranged on first axial component 46 from dual torsion type first torsion spring (wheel word) 60 that primary importance turns to the second place.As the two point dotted line of Fig. 4 was represented, first torsion spring 60 was configured such that separately 90 degree or bigger of second arm portion 66 that the first arm part 64 that is positioned at central authorities and two reverse parts 62 are linked together under no load state extends with respect to 62 the two ends from the reverse part.Shown in the solid line of Fig. 4, at the tip portion of the first arm part 64 when pressing down, two reverse part 62 elastic deformations, so as to come with second arm portion, 66 roughly the same directions on the position pointed to.First torsion spring 60 is being arranged on first axial component 46 between the supporting part 52 of rotating support member 50 via distance piece 68, and distance piece inserts reverse part 62 separately.Shown in Fig. 2 and 4, the first arm part 64 is inserted in the opening 57 that is formed in the rotating support member 50, and abuts against the abutting on the part 59 of rotating support member 50.
As Figure 1-3, be arranged in the pars intermedia office, bottom of fixed bearing member 16 as the locking component 70 that engages holding device.Locking component 70 engages rotating support member 50 and remain on the primary importance, and via first wire rod 86 and second wire rod, 90 mechanical connections on pressure receiving mechanism 100, as shown in Figure 1.By partly locating to be arranged on third axle on the left and right directions in substantial middle longitudinally to member 72, locking component 70 is attached on the support 74 that is fixed on the fixed bearing member 16 in the swing mode.The hook portions 76 that protrudes upward is formed on the leading section office of locking component 70.Therefore, under first state of locking component 70 approximate horizontal (Fig. 2), the hook portions 76 of locking component 70 is locked in the office, bottom of the rotating support member 50 that is positioned on the primary importance.Locking component 70 forward with downward-sloping second state under (Fig. 1 and 10), hook portions 76 release from the rotating support member 50.In other words, be transformed into second state and from rotating support member 50 during release, rotating support member 50 turns to the second place by the compressing power of first torsion spring 60 at locking component 70.In described structure, as shown in Figure 4, second torsion spring 78 is arranged in third axle on member 72, and locking component 70 is always oppressed towards the first state elasticity.
Then, time restriction headrest main body 12 turns back to entopic position holding mechanism H from the normal position moves to emergency location will to be described in headrest main body 12.The position holding mechanism H that is arranged on headrest HR place comprises lockplate (engagement member) 80 on the exterior bottom surface that is arranged on headrest main body 12, be arranged on the support column 14 interior second engagement recesses part 20 and the 3rd engagement recesses part 21, shown in Fig. 2 and 3.Edge joint part (first junction section) 81 that is arranged on the lockplate 80 on the headrest main body 12 is can the disengaging mode engaging the second engagement recesses part 20 or the 3rd engagement recesses part 21 that is arranged in each support column 14.When the edge joint part 81 of lockplate 80 engaged the second engagement recesses part 20 or the 3rd engagement recesses part 21, headrest main body 12 was kept, and made headrest main body 12 not turn back to the normal position.
Shown in Fig. 6 and 7, each lockplate 80 is rectangular frames of being made by metallic material (steel, corrosion-resistant steel or analogue), this framework have be formed on insert support column 14 in intracardiac opening.The edge joint part 81 of the support column 14 in the opening of contact insertion lockplate 80 is formed on an inner edge portion office of the opening of each lockplate 80.The operation section 82 that is used for slide is arranged on the outer edge portion of each lockplate 80, makes operation section 82 be positioned at the part place relative with the part that is formed with edge joint part 81.In addition, the pin 83 that is used for the compression coil spring (pressing member) 84 that backstop describes subsequently is arranged on the outer edge portion of the position of the edge joint part 81 that is formed with lockplate 80 with stretching out.
Each lockplate 80 be attached at be fixed on the headrest main body 12 exterior bottom surface on support separately 94 on.Support 94 has the plate configuration section 96 that the rear portion that is positioned at rectangular elements main body 95 (towards a side of headrest main body 12) is located, and shown in Fig. 6 and 8, makes lockplate 80 slidably be provided with.The engaging claw 97 that can engage with the conjugate foramen 35 in the bottom wall portion 30A that is formed on headrest core 30 erectly is arranged on the place, rear portion of member body 95 with predetermined space on the side of the front and back of grip block configuration section 95.Support column 14 inserts the pillar through hole 98 that passes wherein and is being formed in the member body 95 of each support 94 with plate configuration section 96 corresponding positions.Therefore, because support column 14 inserts pillar through hole 98, by each engaging claw 97 brute force is pushed conjugate foramen 35 separately, each support 94 is fixed on the headrest main body 12 (the bottom wall portion 30A of headrest core 30), keeps crust 42.
Be attached at lockplate 80 on the plate configuration section 96 of support 94, shown in Fig. 2,3 and 8, the opening of lockplate 80 is aimed at the pillar through hole 98 of member body 95, so that outwards expose the operation section 82 of lockplate 80 via the side opening part of member body 95.Lockplate 80 is oppressed towards the sidepiece elasticity of the operation section 82 that is arranged in compression coil spring 84 formation between pin 83 and the member body 95 usually.In other words, the support 94 interior lockplates 80 that are arranged on the right side (left side of Fig. 3) that is fixed on headrest main body 12 are oppressed towards right side (left side of Fig. 3) elasticity of headrest main body 12.The lockplate 80 that is arranged in the support 94 on the left side (Fig. 3 right side) that is fixed on headrest main body 12 is oppressed towards left side (Fig. 3 right side) elasticity of headrest main body 12.Prevent that by the unshowned stop device of accompanying drawing each lockplate 80 from leaving plate configuration section 96.
As mentioned above, and shown in Fig. 8 and 9, be formed on the joint step 20A that single second engagement recesses parts 20 in the support column 14 have on the sidepiece that is positioned at the 3rd engagement recesses part 21 and are approximately perpendicular to an outer surface of column as position holding mechanism H.The second engagement recesses part 20 also has on the sidepiece that is positioned at fixed bearing member 16 and is leaving tilt in the direction of the fixed bearing member 16 sloping portion 20B of (being inclined upwardly) of the depth side that engages step 20A.On the other hand, be formed on the sidepiece that three the 3rd engagement recesses parts 21 in the support column 14 have the tip portion that is positioned at support column 14 and be approximately perpendicular to the joint step 21A of an outer surface of column.Each the 3rd engagement recesses part 21 also has on the sidepiece that is positioned at the second engagement recesses part 20 and leaves tilt in the direction of the second engagement recesses part 20 sloping portion 21B of (being inclined upwardly) of the depth side that engages step 21A.Each sloping portion 20B and 21B be with the angle tilt of the 20-30 degree outer surface of column to support column 14, and have plane surface.
Therefore, because edge joint part 81 is slided on the sloping portion 21B of each the 3rd engagement recesses part 21 and abutted when upwards the lower position tip of support column 14 (or leave) is left in (towards fixed bearing member 16) motion towards the lockplate 80 of support column 14 elasticity compressings, position holding mechanism H makes lockplate 80 upwards through each the 3rd engagement recesses part 21.Therefore, when rear impacts occurring, can move towards emergency location from the normal position with the headrest main body 12 of the M of position change mechanism interlocking.On the contrary, when leaving upper position (or leaving the second engagement recesses part 20) towards lockplate 80 downward (towards the tip of the support column 14) motion of support column 14 elasticity compressing, edge joint part 81 engages with engage step 20A, the 21A of the second engagement recesses part 20 or the 3rd engagement recesses part 21.But this does not make lockplate 80 downwards through second engagement recesses part 20 and each the 3rd engagement recesses part 21.Therefore, when head of passenger impinged upon headrest main body 12 between normal position and emergency location, lockplate 80 engaged with any one the 3rd engagement recesses part 21, and therefore restriction headrest main body 12 turns back to the normal position.When head of passenger impinged upon on the headrest main body 12 that is positioned on the emergency location, lockplate 80 engaged with the second engagement recesses part 20, and the main body 12 that therefore prevents to rest the head on turns back to the normal position.
The position holding mechanism H of described embodiment can break away from lockplate 80 from the second engagement recesses part 20, and does not use resetting tool separately.Particularly, shown in Fig. 9 A, by finger during towards support column 14 compressings, each lockplate 80 slides being furnished with on the direction of compression coil spring at the operation section 82 that extends through support 94.When therefore lockplate 80 slided, edge joint part 81 was separated with the second engagement recesses part 20 of support column 14, and the edge joint part 81 and the second engagement recesses part 20 are broken away from.Therefore, because simultaneously with the operation section 82 of two lockplates 80 of finger compressing, when headrest main body 12 was returned compressing towards the normal position, headrest main body 12 can turn back to the normal position.
Shown in Fig. 3 and 12, be connected in the support column 14 that first wire rod 86 on second wire rod 90 that extends from pressure receiving mechanism 100 inserts on the left side that is arranged in headrest HR.One end of first wire rod 86 is connected on the first joint piece 88 at the place, tip that is arranged in support column 14.The other end of first wire rod 86 extends from the upper end of support column 14 and inserts support 74, and then is connected than third axle to member 72 more on the part of the locking component 70 of back.The part between support column 14 and support 74 of first wire rod 86 that extends from support column 14 is managed 86A and is covered, and first wire rod 86 is by pipe 86A guiding.
Shown in Figure 11 and 12, an end that is installed in second wire rod 90 on the back of seat S1 is connected on the end portion of pressure dash receiver 102 of pressure receiving mechanism 100, and the other end of second wire rod 90 is connected on the second joint piece 92 of the lower end that is arranged in pillar supporting member 120.When the HR that will rest the head on is installed on the back of seat S1, support column 14 is installed in that the first joint piece 88 and the second joint piece 92 link together under the situation in the respective strut supporting member 120.Support column 14 pulled out when back of seat S1 dismantles at the HR that will rest the head under the situation of pillar supporting member 120 separately, the first joint piece 88 and the second joint piece 92 are separated from each other.In other words, second wire rod 90 and first wire rod 86 link together via the first joint piece 88 and the second joint piece 90 and separate.Therefore, the pressure dash receiver 102 of pressure receiving mechanism 100 and lockplate 80 are mechanically coupled together via second wire rod 90 that links together by joint piece 88 and 92 and first wire rod 86.
Shown in Figure 11 and 12, be arranged on pressure receiving mechanism 100 in the back of seat S1 and comprise the pressure dash receiver 102 that is arranged on the seat frame 106, be arranged on the seat cushion member so that abut member 104 towards pressure dash receiver 102.Pressure dash receiver 102 forms it is in when unloaded state towards abutting the curved shape that member 102 stretches out.Pressure dash receiver 102 has the upper part on the support 108 of being fixed on that is fixed on the seat frame 106, and is connected with the end portion unfixing (therefore forming free end) of second wire rod 90.
Abutting member 104 is to be arranged in the block member of leaving pressure dash receiver 102 suitable distances.Abutting member 104 is arranged in the passenger and only tilts to lean against on the normal position on the back of seat S1 not contact pressure dash receiver 102.When rear impacts and passenger are pressed back of seat S1, abut the pressure dash receiver 102 of member 104 impact bendings at vehicle, pressure dash receiver 102 is deformed into roughly rectilinear form.Therefore, when rear impact pressed back of seat S1 with the passenger, the end portion of pressure dash receiver 102 moved downward, so that the second wire rod pulling downwards step pulling of going forward side by side is connected first wire rod 86 on the headrest HR side on second wire rod 90.So, when therefore first wire rod 86 spurs, locking component 70 will change over second state (Fig. 1 and 10) from first state (Fig. 2), and locking component 70 is broken away from from rotating support member 50.
The operation that below description is had described structure according to headrest of the present invention.In normal condition, headrest main body 12 keeps on the normal position, shown in Fig. 2,3,11 and 12.In other words, rotating support member 50 is locked in primary importance by locking component 70, and the main body 12 of therefore resting the head on remains on the normal position.Locking component 70 is connected on the pressure dash receiver 102 of pressure receiving mechanism 100 via first wire rod 86, the second joint piece 92, the first joint piece 88 and first wire rod 86.
Shown in Fig. 2,3,7A and 8A, support column 14 is positioned at the opening of the lockplate 80 that is arranged in each support 94 place.During in the normal position, each lockplate 80 is located near the most advanced and sophisticated side (lower end side) of support column 14 more than the 3rd engagement recesses part 21 on the most advanced and sophisticated side (lower end side) that is formed on support column 14 in headrest main body 12.Therefore, edge joint part 81 by compression coil spring 84 elasticity compressings so that when abutting against on the outside face of support column 14, each lockplate 80 does not engage with the second engagement recesses part 20 or the 3rd engagement recesses part 21.
When vehicle rear impacts and passenger occur and firmly presses back of seat S1, pressure receiving mechanism 100 abut member 104 shock pressure dash receivers 102, deformation pressure dash receiver 102.When pressure dash receiver 102 distortion, on the direction of (or towards) pressure dash receiver 102, spur by the first joint piece 88 and the second joint piece, 92 bonded assemblys 1 year 90 and first wire rod 86.When first wire rod 86 spurred on the direction of pressure dash receiver 102, the locking component 70 that is urged to first state by second torsion spring 78 changed to second state with its state, overcame the compressing power of second torsion spring 78.When locking component 70 changed to second state fully, locking component 70 broke away from from rotating support member 50.
As shown in figure 10, the compressing power of first torsion spring 60 causes rotating support member 50 to break away from from locking component 70, rotates towards the second place from primary importance around first axial component 46 always.The rotation of rotating support member 50 causes second axial component 48 of pivot supporting rotating support member 50 and headrest core 30 to travel forward from first axial component, 46 approximate vertical bottom approximate horizontal along arching trajectory, limits the path of motion on the top of headrest main body 12 thus.The rotation of rotating support member 50 causes the center support part 14B upward movement of each headrest body abutment part 34A at the place, bottom that is arranged on headrest core 30 along each support column 14, limits the path of motion of the bottom of headrest main body 12 thus.In other words, according to the rotation of rotating support member 50 from the primary importance to the second place, the motion of second axial component 48 and headrest body abutment part 34A along moving of support column 14 cause headrest main body 12 under the state that turns forward towards the emergency location upward movement.
Shown in Fig. 7 B, 8B and 10, headrest main body 12 with its position when the normal position changes to emergency location, each lockplate 80 from the below order through the 3rd engagement recesses part 21.At this moment, the outside face that the compressing power of compression coil spring 84 causes each lockplate 80 and support column 14 is upward movement contiguously, makes each lockplate 80 through each the 3rd engagement recesses part 21 time, slides on sloping portion 21B and abuts.Therefore, because each lockplate process under the situation that does not engage the 3rd any engagement recesses part 21, headrest main body 12 moves to emergency location from the normal position.
When rotating support member 50 turned to the second place, as shown in Figure 1, first of rotating support member 50 abutted surface 56 and abuts against on the flange portion 26 of fixed bearing member 16, so that the rotation of restriction rotating support member 50.When rotating support member 50 turns to the second place, be formed on vertical convex ridges 40 in the headrest core 30 and abut against second of rotating support member 50 and abut on the surface 58.So, shown in Fig. 1,7B and 8B, when coming emergency location, lockplate 80 is aimed at the second engagement recesses part 20 in headrest main body 12, and the edge joint part 81 of the lockplate 80 of oppressing by compression coil spring 84 elasticity and the second engagement recesses part 20 engage step 20A joint.Therefore, when headrest main body 12 stopped at emergency location, lockplate 80 engaged with the second engagement recesses part 20, so that restriction headrest main body towards entopic motion, makes headrest main body 12 receive head of passenger, remained on the emergency location simultaneously.
As shown in Figure 1, in the headrest HR of this embodiment, in headrest main body 12 when its position change is become emergency location, be arranged on second of rotating support member 50 in the headrest main body 12 abut surface 58 come be formed on preceding half main body 31 on the plane that contacts of vertical separately convex ridge 40.Equally in headrest main body 12 when its position change is become emergency location, first of rotating support member 50 abuts surface 56 and comes the plane that contacts with the flange portion 26 of the fixed bearing member 16 of the supporting member 10 of resting the head on.Therefore, when headrest main body 12 received head of passenger, impulsive force acted on first axial component 46 and second axial component 48 hardly, and prevented that first axial component 46 and second axial component 48 from damaging.
Because rotating support member 50 is single members, the headrest HR of this embodiment has the rigidity of the stress that load that the opposing impulsive force produces applies.In addition, the headrest body abutment part 34A that is arranged on the bottom place of headrest core 30 contacts with the center support part 14B of corresponding support column 14.Therefore, even head of passenger forward, be tilted to preceding or be tilted to impinge upon the headrest main body 12 on, even perhaps head of passenger is tilted to down bump headrest main body 12, the impulsive force that bump produces also receives by support column 14 via headrest body abutment part 34A.
Simultaneously, owing to be sitting in the difference of health and the seat configuration state of the single passenger on the seat S, the distance when rear impacts between head of passenger and the headrest HR is also different.Therefore, the moment varied slightly of head of passenger bump headrest main body 12.More especially, exist headrest HR to move to the situation of head impact headrest main body 12 after the emergency location, and the situation of head impact headrest main body 12 when existing headrest main body 12 that its position change is become emergency location.For example, when headrest main body 12 moves to position shown in Figure 10, it is punctual with 21 pairs of the 3rd engagement recesses parts that are positioned at from the bottom several second to be lockplate 80, and in the middle of the head of passenger under the situation of headrest main body 12, each lockplate 80 is with several second the 3rd engagement recesses part 21 engages from the bottom.Therefore, remain on the locational headrest main body 12 of Figure 10 and be restricted, and do not turn back to the normal position, and on this position, receive head of passenger.
For example, head of passenger is impacted under the situation of headrest main body 12 when lockplate 80 is positioned between the 3rd engagement recesses part 21 at the second engagement recesses part 20 and top, headrest main body 12 is postponed slightly, up to each lockplate 80 with till top the 3rd engagement recesses part 21 is aimed at.When lockplate 80 engaged with top the 3rd engagement recesses part 21, restriction headrest main body 12 turned back to the normal position, made headrest main body 12 receive head of passenger on this position.In other words, the headrest main body 12 its position head of passenger when the normal position changes over emergency location is impinged upon the headrest HR headrest main body 12 on the time, lockplate 80 engages with entopic the 3rd engagement recesses part 21 of close lockplate 80, makes headrest main body 12 receive head of passenger in the position that lockplate 90 engages with the 3rd engagement recesses part 21.
Impinge upon the head of passenger bounce-back forward owing to the counteraction of collision usually on the headrest main body 12.Therefore, when head left headrest main body 12, because the compressing power of first torsion spring 60, headrest main body 12 became emergency location with its position change, and lockplate 80 engages with the second engagement recesses part 20.In other words, also then moving to emergency location so that receive once more in the change in location process of head from the normal position to the emergency location, headrest HR receives head of passenger.
On the other hand, for the headrest main body 12 that will be transformed into emergency location turns back to the normal position, shown in Fig. 9 A and 9B, headrest main body 12 promotes towards the normal position, and each lockplate 80 that slides is simultaneously wherein used hand pressing operation section 82.More especially, when lockplate 80 slided, the edge joint part 81 of lockplate 80 broke away from from the second engagement recesses part 20, made headrest main body 12 move to the normal position.When headrest main body 12 was moved towards the normal position, rotating support member 50 rotated towards the compressing power that primary importance is resisted first torsion spring 60.Then, when rotating support member 50 moved to primary importance, rotating support member 50 contact locking components 70 caused locking component 70 to be urged to first state by second torsion spring, 78 elasticity, so that state is changed over second state.When rotating support member 50 reached primary importance, locking component 70 turned back to first state, made the hook portions 76 of locking component 70 and rotating support member 50 lock.Therefore, rotating support member 50 remains on primary importance once more, and the main body of will resting the head on 12 remains on the normal position.
Therefore the headrest HR of this embodiment has following effect and effect.At first, the change in location of headrest main body 12 from the normal position to the emergency location slided in the M of position change mechanism along support column 14 by the rotation of rotating support member 50 and the body abutment part 34A that rests the head on and caused.In other words, supported owing to change the headrest main body 12 of its position, by support column 14,14 guiding, the M of position change mechanism comprises less parts simultaneously, causes headrest main body 12 compact and lighter more, guarantees that equally cost reduces.When headrest main body 12 becomes emergency location with its position change, each headrest main body 12 and headrest supporting member 10 reach the plane that contact with rotating support member 50 as single member, make the supporting member 10 of resting the head on can receive and come from head of passenger and clash into the impulsive force that the main body 12 of resting the head on causes.
When the head of passenger percussion movement arrives the headrest main body 12 of emergency location, lockplate 80 engages the second engagement recesses part 20 that is arranged in the support column 14, and therefore restriction headrest main body 12 turns back to the normal position, makes headrest main body 12 suitably receive head of passenger.At head of passenger bump from the normal position during towards the headrest main body 12 of emergency location motion, lockplate 80 engages any one of three the 3rd engagement recesses parts 21 being arranged in the support column 14, and therefore restriction headrest main body 12 turns back to the normal position, makes headrest main body 12 suitably receive head of passenger.
In addition, position holding mechanism H comprises the lockplate 80 and the second engagement recesses part 20 and the 3rd engagement recesses part 21 that are arranged in the support column 14 in the exterior bottom surface that is arranged on headrest main body 12, and the feasible structure of headrest main body 12 that keeps is simpler.In addition, because lockplate 80 is attached on the support 84 on the bottom that is fixed on headrest main body 12, do not need to provide lockplate 80 is attached at device on the headrest main body 12.Because lockplate 80, the second engagement recesses part 20 and the 3rd engagement recesses part 21 are arranged on headrest core 30 outsides, the space that is used for these parts does not need to be arranged in the headrest core 30, feasible headrest main body 12 compactnesses.In addition, operation section 82 by hand propelled so that during slide lock plate 80, lockplate 80 can break away from from the second engagement recesses part 20 or the 3rd engagement recesses part 21.Therefore, do not need other resetting tool, and can be easily and carry out the headrest main body 12 that will be transformed into emergency location apace and turn back to entopic operation.
Because headrest main body 12 is not separated, and does not have parting line on the appearance surfaces of headrest main body 12, improved the outward appearance of headrest HR.Because external substance does not enter headrest main body 12, does not need to provide the other member that prevents that external substance from invading, and be not easy to occur the fault of the M of position change mechanism.
In addition, the center support part 14B of support column 14 extends under the state of turning forward, and makes headrest main body 12 roughly travel forward the process that moves to emergency location from the normal position, and can receive head of passenger when head moves on a small quantity backward.
Modification
As shown in Figure 1, in the headrest HR of illustrated embodiment, the state of turning forward that is positioned at the headrest main body 12 on the emergency location can be regulated by the axial distance that changes between first axial component 46 and second axial component 48.For example, when the axial distance setting between first axial component 46 and second axial component 48 was big, the amount of moving forward on the top of the main body of resting the head on so 12 increased, and makes it can increase the state that turns forward of the headrest HR that is transformed into emergency location.
As Fig. 1 further shown in, in the headrest HR of this embodiment, the angle of inclination that is positioned at the center support part 14B that the state of turning forward of the headrest main body 12 on the emergency location can be by changing each support column 14 is regulated.For example,, can increase the amount of moving forward of bottom of headrest main body 12, therefore make it can reduce to be transformed into the state that turns forward of the headrest HR of emergency location by the angle setting that turns forward of center support part 14B is bigger.On the other hand, in the angle that turns forward of center support part 14B less (attitude more close to the vertical shape) is set, the amount of moving forward of the bottom of headrest main body 12 reduces, and therefore makes it can increase the state that turns forward of the headrest main body 12 that is transformed into emergency location.
Though in described embodiment, rotating support member 50 pivots and is bearing on the front side of headrest supporting member 10, and the supporting that further pivots of preceding half main body 31 by headrest core 30, the configuration of rotating support member 50 is not limited to this particular form.For example, rotating support member 50 can pivot and be bearing on the rear side of headrest supporting member 10, and the supporting that can pivot by the later half main body 32 of headrest core 30.When rotating support member 50 pivots supporting by later half main body 32, from the beginning rest the head on state that supporting member 10 approximate horizontal extend back and be rotating support member 50 and the corresponding primary importance in normal position headrest HR, and from the beginning to rest the head on the upwardly extending state of supporting member 10 approximate vertical be rotating support member 50 and the corresponding second place of emergency location headrest HR.
In addition, in described embodiment, dual torsional mode first torsion spring 60 is wheel words, but, wheel word is not limited to torsion spring, and any other device that can use for example compression coil spring, sheet spring or motor is as wheel word, as long as it can turn to the second place from primary importance with rotating support member 50.
In addition, in the above description, headrest main body 12 is with movable manner supporting, and the guiding segments that the second engagement recesses part 20 and the 3rd engagement recesses part 21 be set is the part (center support part 14B) of support column 13; But guiding segments can be the parts that separate with support column 14.For example, the effect and the effect that are similar to illustrated embodiment can obtain by following structure, wherein the guiding segments of extending downwards from fixed bearing member 16 are arranged on the lower central part (between the support column 14,14) of the fixed bearing member 16 that constitutes headrest supporting member 10, and for example the engagement member of lockplate 80 is arranged in position near the guiding segments of headrest main body 12.
In addition, in the above description, the headrest body abutment part 34A that is arranged in the bottom wall portion of preceding half main body 31 of headrest core 30 of headrest main body 12 forms integral body with preceding half main body 31; But headrest body abutment part 34A can separate formation with preceding half main body 31, and attached on it.
Provide above description though be arranged on the situation of each support column 14 for the second engagement recesses part 20 and the 3rd engagement recesses part 21, the second engagement recesses part 20 and the 3rd engagement recesses part 21 can only be arranged in one of support column 14 (left side or right).The quantity that is formed on the 3rd engagement recesses part 21 in the support column 14 is not limited to three in the illustrated embodiment, and it can be two or still less, perhaps four or more.The 3rd engagement recesses part 21 can be omitted, and one second engagement recesses part 20 can only be set, and makes only to engage lockplate 80 when headrest main body 12 becomes emergency location with its position change.
In addition, in described embodiment, the leader of the second engagement recesses part 20 and each the 3rd engagement recesses part 21 each sloping portion 20B and 21B of flat shape naturally; But it is flat that leader needs not be.Leader can be taked any form, as long as their feasible top sides of passing through support columns 14 towards the lockplate 80 of fixed bearing member 16 motions.For example, each leader can be the sloping portion with outstanding curved surface and recessed curved surface.
Though in this embodiment, the second engagement recesses part 20 is provided with sloping portion 20B, if headrest main body 12 is configured to not from the further upward movement of emergency location, sloping portion 20B can be omitted.
In addition, in the above description, lockplate 80 be attached at be fixed on the headrest main body 12 exterior bottom surface on support 94 on; But lockplate 80 can directly be arranged on one's body 12 of the main bodys of headrest.In addition, lockplate 80 needs not be the center of being arranged on and has support column 14 and inserts the rectangular frame that passes opening wherein, and it can form be similar to almost dull and stereotyped, can near or away from support column 14.
In described embodiment, comprise that pressure dash receiver 102 and the pressure receiving mechanism 100 that abuts member 104 are used as the rear impacts detecting device.But the rear impacts detecting device is not limited to this pressure receiving mechanism 100, and can take in fact to use or other form of difference of current proposition.For example, the multiple switch of driving switch and limit switch or for example the multiple sensors of shock transducer and pressure sensor can be used for the rear impacts detecting device.In addition, in described embodiment, first wire rod 86 on second wire rod 90 of mechanical connection in being arranged on back of seat S1 is expressed as disconnecting gear; But disconnecting gear can be chain, rope or analogue.In addition, under the situation of rear impacts detecting device and the operation of joint holding device electricity, disconnecting gear can be cable or the analogue that is electrically connected.
In addition, the rear impacts detecting device can be arranged in headrest main body 12 inside.In the time of in therefore the rear impacts detecting device is arranged in headrest main body 12, disconnecting gear is arranged on the inside of headrest main body 12.
Find out from above,, the position of headrest main body is changed over the position holding mechanism that the position change mechanism of emergency location and the main body of will resting the head on remain on emergency location have simple structure from the normal position according to headrest of the present invention.Therefore, can realize that size reduces, weight reduces, the improvement of cost decline and outward appearance and operating characteristic.
Claims (12)
1. one kind is arranged on the movable headrest that also position can be changed over emergency location on the back of seat that is installed in the seat in the vehicle from the normal position, comprising:
The headrest supporting member, the headrest supporting member is by the back of seat supporting and have guiding segments;
The rotating support member, the rotating support member by the headrest supporting member pivot supporting and and the corresponding primary importance in normal position and and the corresponding second place of emergency location between rotate;
The headrest main body, the headrest main body is by the supporting of rotating support members pivot, and has the headrest body abutment part that moves along guiding segments, thus when the rotating support member rotates with respect to the headrest supporting member, the headrest main body is with respect to the position change of headrest supporting member, and the body abutment of resting the head on simultaneously part moves along guiding segments;
Wheel word, wheel word turns to the second place with the rotating support member from primary importance;
Engage holding device, the joint holding device engages in departing mode and keeps the rotating support member, so that the rotation of the rotating support member that the restricted passage wheel word causes; And
Disconnecting gear, disconnecting gear will engage holding device and break away from from the rotating support member, so that wheel word rotates the rotating support member.
2. headrest as claimed in claim 1 is characterized in that, guiding segments is arranged in the supporting member pillar that is connected on the back of seat.
3. headrest as claimed in claim 2 is characterized in that, the rotating support member has and abuts against first on the described headrest supporting member abut the surface and abut against headrest second on main body and abut the surface when the rotating support member turns to the second place.
4. headrest as claimed in claim 2 is characterized in that, also comprises:
First junction section is arranged in the engagement member at the place, bottom that is arranged in the headrest main body, and keeps being oppressed in the mode of contact guidance section; And
Second junction section is arranged in the guiding segments, and aims at and engage with first junction section when the headrest main body is transformed into emergency location.
5. headrest as claimed in claim 4 is characterized in that, engagement member has the operation section that first junction section is separated and broken away from from second junction section.
6. headrest as claimed in claim 5 is characterized in that, engagement member is arranged in the support place on the bottom that is fixed on the headrest main body.
7. headrest as claimed in claim 4, it is characterized in that, guiding segments is provided with the 3rd junction section, the 3rd junction section is between the position and second junction section that the engagement member of the headrest main body on the normal position is located, when making first junction section of engagement member engage with the 3rd junction section, the main body that prevents to rest the head on turns back to the normal position.
8. headrest as claimed in claim 7, it is characterized in that, the 3rd junction section is formed in the recess in the outside face of guiding segments, and has the joint step that engages with first junction section, and the inboard acclivitous leader towards the outside face of guiding segments from the joint step.
9. headrest as claimed in claim 2 is characterized in that, guiding segments tilts forward from back of seat gradually towards the top of guiding segments.
10. one kind is arranged on the movable headrest that also position can be changed over emergency location on the back of seat that is installed in the seat in the vehicle from the normal position, and wherein said headrest comprises:
Headrest supporting member, headrest supporting member have the supporting member pillar that is connected on the back of seat and are arranged on towards the top of supporting member pillar from the back of seat guiding segments of bevelled position gradually forward;
The rotating support member, the rotating support member by the headrest supporting member pivot supporting and and the corresponding primary importance in normal position and and the corresponding second place of emergency location between rotate;
The headrest main body, the headrest main body is by the supporting of rotating support members pivot, and has the headrest body abutment part that moves along guiding segments, thus when the rotating support member rotates with respect to the headrest supporting member, the headrest main body is with respect to the position change of headrest supporting member, and the body abutment of resting the head on simultaneously part moves along guiding segments;
Wheel word, wheel word turns to the second place with the rotating support member from primary importance;
Engage holding device, the joint holding device engages in departing mode and keeps the rotating support member, so that the rotation of the rotating support member that the restricted passage wheel word causes; And
Disconnecting gear, disconnecting gear will engage holding device and break away from from the rotating support member, so that wheel word rotates the rotating support member;
First junction section is arranged in the engagement member at the place, bottom that is arranged in the headrest main body, and keeps being oppressed in the mode of contact guidance section; And
Second junction section is arranged in the guiding segments, and aims at and engage with first junction section when the headrest main body is transformed into emergency location;
Wherein the rotating support member is formed with and abuts against first on the described headrest supporting member abut the surface and abut against headrest second on main body and abut the surface when the rotating support member turns to the second place.
11. headrest as claimed in claim 10, it is characterized in that, guiding segments is provided with the 3rd junction section, the 3rd junction section is between the position and second junction section that the engagement member of the headrest main body on the normal position is located, when making first junction section of engagement member engage with the 3rd junction section, the main body that prevents to rest the head on turns back to the normal position.
12. headrest as claimed in claim 11, it is characterized in that, the 3rd junction section is formed in the recess in the outside face of guiding segments, and has the joint step that engages with first junction section, and the inboard acclivitous leader towards the outside face of guiding segments from the joint step.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-034011 | 2007-02-14 | ||
| JP2007034011 | 2007-02-14 | ||
| JP2007034011A JP5191138B2 (en) | 2007-02-14 | 2007-02-14 | Headrest |
| JP2007059024 | 2007-03-08 | ||
| JP2007059024A JP5079358B2 (en) | 2007-03-08 | 2007-03-08 | Headrest |
| JP2007-059024 | 2007-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101243925A CN101243925A (en) | 2008-08-20 |
| CN101243925B true CN101243925B (en) | 2011-08-31 |
Family
ID=39754639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100056637A Expired - Fee Related CN101243925B (en) | 2007-02-14 | 2008-02-14 | Headrest |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5191138B2 (en) |
| CN (1) | CN101243925B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2469310B (en) | 2009-04-08 | 2013-11-06 | Ford Global Tech Llc | A seat having an armrest assembly |
| JP5612989B2 (en) * | 2010-09-29 | 2014-10-22 | 日本テクニカ株式会社 | Headrest fall prevention structure |
| DE102011010232B4 (en) * | 2011-02-03 | 2013-01-17 | Audi Ag | Device for adjusting a headrest |
| DE102012000426A1 (en) * | 2012-01-12 | 2013-07-18 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Headrest for a vehicle seat |
| JP5803841B2 (en) * | 2012-08-10 | 2015-11-04 | 豊田合成株式会社 | Vehicle feeding device |
| JP6102771B2 (en) * | 2014-01-29 | 2017-03-29 | トヨタ紡織株式会社 | Movable headrest |
| CN104442483B (en) * | 2014-11-03 | 2017-01-11 | 上海延锋江森座椅有限公司 | Two-way headrest structure |
| US10173565B2 (en) * | 2016-05-18 | 2019-01-08 | Ford Global Technologies, Llc | Vehicle seat and headrest with dynamic impact energy management system |
| US11273746B1 (en) * | 2021-03-17 | 2022-03-15 | GM Global Technology Operations LLC | Automotive seat headrest support |
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|---|---|---|---|---|
| DE10138248C1 (en) * | 2001-08-03 | 2002-12-05 | Autoliv Dev | Active headrest for automobile passenger seat has driven movement device for displacement relative to head of passenger for reducing risk of injury |
| FR2880308A1 (en) * | 2005-01-04 | 2006-07-07 | Hammerstein Gmbh C Rob | HEAD SUPPORT FOR A MOTOR VEHICLE SEAT |
| CN2823032Y (en) * | 2006-03-28 | 2006-10-04 | 钟謇 | Seat having headrest |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10004766B4 (en) * | 2000-02-03 | 2004-10-28 | Keiper Gmbh & Co. Kg | Headrest for a vehicle seat |
| JP4225139B2 (en) * | 2003-07-03 | 2009-02-18 | トヨタ紡織株式会社 | Vehicle seat |
| DE10335268B3 (en) * | 2003-08-01 | 2004-12-23 | Itw Automotive Products Gmbh & Co. Kg | Headrest for automobile passenger seat, has fixed plate-shaped carrier component and relatively displaced plate-shaped carrier element used for protecting neck of passenger upon rear collision |
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2007
- 2007-02-14 JP JP2007034011A patent/JP5191138B2/en not_active Expired - Fee Related
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2008
- 2008-02-14 CN CN2008100056637A patent/CN101243925B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10138248C1 (en) * | 2001-08-03 | 2002-12-05 | Autoliv Dev | Active headrest for automobile passenger seat has driven movement device for displacement relative to head of passenger for reducing risk of injury |
| FR2880308A1 (en) * | 2005-01-04 | 2006-07-07 | Hammerstein Gmbh C Rob | HEAD SUPPORT FOR A MOTOR VEHICLE SEAT |
| CN2823032Y (en) * | 2006-03-28 | 2006-10-04 | 钟謇 | Seat having headrest |
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| Title |
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| JP特开2002-142910A 2002.05.21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5191138B2 (en) | 2013-04-24 |
| CN101243925A (en) | 2008-08-20 |
| JP2008195297A (en) | 2008-08-28 |
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