CN202863203U - Active safety headrest device of automobile seat - Google Patents
Active safety headrest device of automobile seat Download PDFInfo
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- CN202863203U CN202863203U CN 201220473776 CN201220473776U CN202863203U CN 202863203 U CN202863203 U CN 202863203U CN 201220473776 CN201220473776 CN 201220473776 CN 201220473776 U CN201220473776 U CN 201220473776U CN 202863203 U CN202863203 U CN 202863203U
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Abstract
The utility model discloses an active safety headrest device of an automobile seat, the active safety headrest device of the automobile seat is composed of a headrest assembly (1), a linkage assembly (2) and a trigger assembly (3). The headrest assembly (1) comprises a locking arm (7) and ejector rods (10), the linkage assembly (2) comprises an impact plate (12), a spring guide groove structural frame (13) and a trigger lock catch lower portion (24), and the trigger assembly (3) comprises a pressure plate (16), two pressure plate guide rods (17)with identical structures, a wedge block (18), a trigger assembly frame upper plate (19) and a trigger assembly frame lower plate (20). The linkage assembly (2) is positioned under the headrest assembly (1), namely the linkage assembly (2) is under the two ejector rods (10) in the headrest assembly (1) for 0-5mm, the trigger assembly (3) is positioned below the linkage assembly (2), and the trigger assembly frame lower plate (20) in the trigger assembly (3) is fastened with the trigger lock catch lower portion (24) in the linkage assembly (2).
Description
Technical field
The utility model relates to a kind of for the head rest device on the automotive seat; say more earnestly; the utility model relates to a kind of for the active safe headrest device on the front-row seats of vehicle; this headrest is in vehicle generation rear-end impact process; can move up forward simultaneously with respect to seat-assembly; so that before the neck shake vigorously, hold occupant's neck, protect better occupant's head and neck safety.
Background technology
Car seat headrest is a kind of traveling comfort and the safety when guaranteeing passenger riding and device of arranging when improving passenger riding.Car seat headrest is except can be for the occupant increases the comfort, and its radical function is to provide a head to rely on and spacing defencive function backward for the occupant.And neck protection is take seat as main, and head is protected neck with respect to the motion backward of upper trunk during namely by seat system-backrest and headrest restriction rear-end impact.
Bump at automobile, especially during rear-end impact, occupant's upper body moves quickly into back of seat, and occupant's head moves to headrest thereupon rapidly.At this moment, owing to produce difference between the amount of movement of the amount of movement of occupant's upper body and occupant's head, the part of the injury of normal generation is exactly cervical vertebra, even as the same at low speed.Determine although reason and injury site are still difficult, but the key factor of cervical vertebra injury being thought in medical research mostly, is that head causes with respect to the institute of acutely rocking of health because in the wings in the overtaking collision.
Active headrest is a kind of the most common, the direct and actv. mode that reduces the neck injury risk at present, and it can make headrest and the distance of occupant's head reduce in a few tens of milliseconds after rear-end impact occurs, thereby reduces the risk of neck injury.
Summary of the invention
Technical problem to be solved in the utility model is to have overcome the problem that prior art exists, and a kind of active safe headrest device of automobile chair is provided.
For solving the problems of the technologies described above, the utility model is that the following technical scheme of employing realizes: described active safe headrest device of automobile chair is comprised of with the triggering assembly headrest assembly, interlock assembly.
Described headrest assembly comprises headrest drop front, headrest fixed panel, 4 rocking arm, lockup arm, headrest snap close bottom, 2 top stage clip, 2 push rod, 2 headrest support, limit plates and headrest snap close top that structure is identical that structure is identical that structure is identical that structure is identical.
4 jiaos of places rocking arm and bolt identical with 4 jiaos of place's 4 structures of employing of headrest fixed panel of headrest drop front is rotationally connected, one terminal bolt of the top stage clip that two structures are identical is fixed on the lower end of headrest adapter plate, the left side of the top stage clip that two structures are identical is connected with the lower end in contact of headrest drop front, 2 transverse tube left sides in the headrest support identical with 2 structures of the back side of headrest fixed panel are welded to connect, the push rod that 2 structures are identical inserts in 2 vertical tubes in the identical headrest support of 2 structures, the upper end of the push rod that 2 structures are identical is welded to connect with the right-hand member that inserts the headrest snap close top in the rectangular through-hole of headrest adapter plate middle part, the right-hand member of the top end face of two rocking arms on lockup arm is welded on, the limit plate is fixed on the headrest adapter plate on lockup arm right side.
Headrest drop front described in the technical scheme and headrest fixed panel are all metal sheet class formation spare, all adopt flanging process to turn on one's side out inwards at the Si Jiaochu of headrest drop front and the fixed panel of resting the head on and identical carry out bolted hanger with rocking arm, the headrest drop front is routed up the lower end of a side of hanger, the i.e. top stage clip guide groove of uniform 2 identical rectangles between two hangers below, article 2, be welded with headrest snap close bottom on the headrest drop front between the top of top stage clip guide groove and top two hangers, the midway location of headrest fixed panel is provided with the rectangular through-hole that headrest snap close top is installed, and the lower end of headrest fixed panel is provided with 2 bolt holes that structure is identical for the identical top stage clip of 2 structures of installation.
Headrest assembly described in the technical scheme rest the head in other words in the assembly the identical push rod of 2 structures under 0 to 40mm place be provided with the interlock assembly.Described interlock assembly comprises crash panel, spring guide barrel construction framework, bump buckle connecting plate, bottom stage clip that two structures are identical, trigger fixedly cross bar of the snap close bottom bottom stage clip identical with two structures.Be installed in the top end face of the bottom surface at the crash panel two ends among the spring guide barrel construction framework and bottom stage clip for being welded to connect, the bottom stage clip is adopted respectively in the lower end of the bottom stage clip that two structures are identical, and fixedly cross bar and screw are fixed on the two ends of the chassis base among the spring guide barrel construction framework, upper surface and the crash panel of bump buckle connecting plate are welded to connect, and the lower end of bump buckle connecting plate is welded to connect with triggering snap close bottom one end face that becomes the T font.
Spring guide barrel construction framework described in the technical scheme by framework header board, framework after plate, the chassis base framework side plate identical with two structures be welded.Plate is the plate structure spare of middle hollow out behind framework header board and the framework, be processed with at two ends, the left and right sides and be convenient to the technique gap that the framework side plate identical with the structure that places respectively both sides welds mutually, chassis base is oblong and the middle plate structure spare that is provided with the gap that the bump buckle connecting plate is installed, framework side plate upper end is Rectangular Plate Structure, and its lower end is the oblique plate that is provided with webge slot.
The lower end of the interlock assembly described in the technical scheme is provided with the triggering assembly.Described triggering assembly comprises pressure plate, two pressure plate guide rod, wedge bar, triggering assembly framework upper plates and triggering assembly framework lower plate that structure is identical.The centre portion of the pressure plate guide rod that is parallel to each other that two structures are identical adopts welding manner to be connected with the right side of pressure plate, triggering the left side of assembly framework upper plate adopts welding manner to be connected with the pressure plate guide rod that is in upper end, pressure plate right side, the right side of triggering assembly framework upper plate adopts welding manner to be connected with the left side of vertical plate in triggering assembly framework lower plate, and wedge bar employing welding manner is fixed on the surface of triggering assembly framework upper plate right-hand member.
Triggering assembly framework lower plate described in the technical scheme is the Shell-Class framing member that is connected successively by four dull and stereotyped head and the tail, first flat board is in horizontality, second flat board that forms assembly framework lower plate becomes 30 to 60 degree with first flat board, the 3rd opening plate is perpendicular to first flat board, and the 4th opening plate is again perpendicular to the 3rd flat board.Form to trigger first flat board of assembly framework lower plate and be provided with rectangular through-hole in the middle of dull and stereotyped with second, trigger assembly framework lower plate right-hand member be the 3rd midway location with the 4th flat board be provided with and the assembly that links in the triggering snap close top that is combined of triggering snap close lower buckle.
The identical pressure plate guide rod of two structures described in the technical scheme be centre portion to adopt cross-sectional plane be rectangle or foursquare straight-bar class formation spare, the two ends of the pressure plate guide rod that two structures are identical all be provided with protrude to the right be used for being placed on cuboid in the chute on original chair skeleton cushion frame left side wing plate and the cushion frame right side wing plate.
Wedge bar described in the technical scheme be centre portion to adopt cross-sectional plane be rectangle or foursquare straight-bar class formation spare, the two ends of wedge bar be provided with and the assembly medi-spring guide barrel construction framework that links on the equipped wedge of webge slot.
Compared with prior art the beneficial effects of the utility model are:
1. head rest device rules checking
Height to headrest among the state compulsory standard GB 15083-2006 " automotive seat, Anchorage and headrest requirement of strength and test method " proposes: the length of ordering to R along the top that is parallel to trunk datum line measurement headrest, the extreme higher position of front-row seats should be less than 800mm, and the extreme higher position of other seats should be less than 750mm.Active safe headrest device of automobile chair described in the utility model is based on certain sedans front-row seats skeleton development and Design, in design, has kept the adjustable function of fixed form, position and third gear of original chair headrest support.The same satisfy regulatory requirement of active safe headrest device of automobile chair described in the utility model is satisfied greater than 800mm in the extreme higher position of original chair headrest.
2. active safe headrest device of automobile chair safeguard function checking
Neck injury criterion NIC is present the most widely used a kind of neck injury critical for the evaluation, it also is researcher's critical for the evaluation of convincing the most, it has passed through many-sided checkings such as volunteer's test, mechanical dummy (such as rear-end impact dummy BioRID II) test and computer simulation experiment, has proved absolutely the accuracy of its evaluation neck injury.Usually, the researcher utilizes maxim NICmax in the front 150ms of NIC behind rear-end impact to estimate the degree of neck injury.
Consult Fig. 2, most cervical injuries occurs in velocity variable and arrives within the scope of 20km/h at 10km/h, and corresponding deceleration/decel approximately is 5g.Deceleration/decel can not injure usually less than 2.5g's.Therefore; the rear-end impact accelerating curve of selecting as shown in FIG., velocity variable is 18km/h, acceleration peak value is 9.0g; time length is 90ms, and the collision neck protection was tested the requirement in dynamic test interval after this curve satisfied China automobile evaluation rules C-NCAP low speed.
Consult Fig. 3, for analyzing through rear-end collision Collision test analogue simulation, former headrest and the contrast of active safety headrest NIC numerical value, heavy line, fine line are respectively NIC response curve under former car seat headrest, the active safe headrest device of automobile chair described in the utility model, abscissa is the time, the ms of unit, ordinate are neck injury criterion NIC, the m of unit
2/ s
2As can be known, under the former car seat headrest, the 17.5m that occupant's neck injury criterion NIC maxim is
2/ s
2, when using active safe headrest device of automobile chair described in the utility model, and active safe headrest device of automobile chair is when launching fully, and neck injury criterion NIC is reduced to 12m
2/ s
2It is about 30% that NICmax has numerically reduced, and namely in the rear-end impact process, active safe headrest device of automobile chair can reduce by occupant's cervical injuries of 30%.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the axonometric projection graph that active safe headrest device of automobile chair structure described in the utility model forms;
Fig. 2 is the acceleration plots that active safe headrest device of automobile chair structure verification validity experiment described in the utility model loads;
Fig. 3 is former headrest and active safe headrest device of automobile chair described in the utility model NIC numerical value correlation curve figure in rear-end impact;
Fig. 4-a is the axonometric projection graph that the headrest assembly structure in the active safe headrest device of automobile chair described in the utility model forms;
Fig. 4-b is that the headrest assembly in the active safe headrest device of automobile chair described in the utility model removes behind the identical push rod of 2 structures headrest support identical with 2 structures the axonometric projection graph with respect to the headrest fixed panel;
Fig. 5 is headrest drop front in the active safe headrest device of automobile chair described in the utility model and rocking arm axonometric projection graph with bolts;
Fig. 6 is the top stage clip guide groove that arranges of a side of the headrest drop front in the active safe headrest device of automobile chair described in the utility model, headrest snap close bottom and the axonometric projection graph of 4 identical hangers of structure;
Fig. 7-a be adopt in the active safe headrest device of automobile chair described in the utility model the top stage clip fixedly cross bar, bolts and nuts with the breakdown axonometric projection graph that is connected on the left of top stage clip and the headrest fixed panel;
Fig. 7-b be adopt in the active safe headrest device of automobile chair described in the utility model the top stage clip fixedly cross bar, bolts and nuts with the axonometric projection graph that is connected on the left of top stage clip and the headrest fixed panel;
Fig. 8 is the axonometric projection graph that the interlock assembly structure in the active safe headrest device of automobile chair described in the utility model forms;
Fig. 9 is the breakdown axonometric projection graph that spring guide barrel construction framed structure in the interlock assembly forms in the active safe headrest device of automobile chair described in the utility model;
Figure 10 is the breakdown axonometric projection graph of the crash panel in the interlock assembly in the active safe headrest device of automobile chair described in the utility model, bump buckle connecting plate and triggering snap close lower position relation;
Figure 11 be in the active safe headrest device of automobile chair described in the utility model the bottom stage clip of interlock in the assembly adopt the bottom stage clip fixedly cross bar be fixed on axonometric projection graph on the chassis base;
Figure 12 is the axonometric projection graph that the triggering assembly structure in the active safe headrest device of automobile chair described in the utility model forms;
Figure 13 is the breakdown axonometric projection graph that the triggering assembly structure in the active safe headrest device of automobile chair described in the utility model forms;
Figure 14 is that the triggering assembly in the active safe headrest device of automobile chair described in the utility model is the axonometric projection graph of wedge bar and framework side plate annexation with interlock assembly annexation;
Figure 15 is the pressure-displacement curve figure of the wedge in the active safe headrest device of automobile chair described in the utility model;
Figure 16-a is the axonometric projection graph that active safe headrest device of automobile chair described in the utility model is in initial condition;
Figure 16-b is active safe headrest device of automobile chair described in the utility model axonometric projection graph in an interim state;
Figure 16-c is that active safe headrest device of automobile chair described in the utility model is in the axonometric projection graph that final condition is mode of operation;
Figure 17 is the axonometric projection graph that the bearing structure of active safe headrest device of automobile chair described in the utility model on seat back-rest framework forms;
Figure 18 is the axonometric projection graph of active safe headrest device of automobile chair described in the utility model and seat back-rest framework assembly relation;
Among the figure: 1. the assembly of resting the head on, 2. the interlock assembly 3. triggers assembly, 4. headrest drop front, 5. headrest fixed panel, 6. rocking arm, 7. lockup arm, 8. headrest snap close bottom, 9. top stage clip, 10. push rod, 11. headrest supports, 12. crash panels, 13. spring guide barrel construction framework, 14. bump buckle connecting plates, 15. bottom stage clips, 16. pressure plate, 17. pressure plate guide rods, 18. wedge bars, 19. trigger assembly framework upper plate, 20. trigger assembly framework lower plate, 21. trigger snap close top, 22. the limit plate, 23. headrest snap close tops, 24. trigger the snap close bottom, 25. top stage clip guide groove, 26. framework header boards, plate behind 27. frameworks, 28. chassis base, 29. framework side plates, 30. top stage clips are cross bar fixedly, 31. webge slot, 32. hangers, 33. bolts, 34. the bottom stage clip is cross bar fixedly, 35. pressure plate upper rails, 36. pressure plate lower guide channels, 37. spring guide barrel construction framework adapter plate, 38. cushion frame side wings, 39. headrest plastic sleeves, 40. the headrest metal sleeve, 41. pipe supports.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 1, the utility model provides a kind of active safe headrest device of automobile chair, and it is comprised of with triggering assembly 3 headrest assembly 1, interlock assembly 2.
Consult Fig. 4-a and Fig. 4-b, described headrest assembly 1 comprises the identical top stage clip of headrest drop front 4, headrest fixed panel 5, rocking arm 6 that 4 structures are identical, lockup arm 7, top stage clip 9 that 8,2 structures in headrest snap close bottom are identical, push rod 10 that 2 structures are identical, headrest support 11, limit plate 22, headrest snap close top 23,25,2 structures of top stage clip guide rail that 2 structures are identical fixedly cross bar 30,4 hangers 32 and 8 bolts 33 that structure is identical that structure is identical.
Consult Fig. 4 to Fig. 6, the rocking arm 6 of 4 same structures is elongated plates class formation spare, and the two ends of rocking arm 6 are provided with the bolt hole of hold-down bolt 33, and the both ends of the surface of rocking arm 6 are the face of cylinder.
In normally travelling, the projection that makes progress on the headrest snap close bottom 8 realizes initial locking with the downward protruding fastener on the headrest snap close top 23 that is fixed on the push rod 10 together.When rear-end impact occured, the headrest snap close bottom 8 on the headrest drop front 4 was separated with the headrest snap close top 23 that moves up, and headrest drop front 4 is under 9 effects of top stage clip, and headrest drop front 4 is finished forward upward movement.
Consult Fig. 7,4 hangers 32 on 4 hangers 32 of headrest on the drop front 4 and the headrest fixed panel 5 are connected the parallelogram sturcutre that formation is rotationally connected by the identical bolt 33 of 4 structures rocking arm 6 identical with 4 structures.Bolt 33 adopts the bolt (be that the outer end is threaded portion, the inner end is the optical axis part) of non-perfect thread, and specification is GB/T5782-2000, M5X16.5mm, and bolt 33 can be realized being connected when optical axis partly rotates with fastening at assurance hanger 32 and rocking arm 6.Two identical top stage clips 9 of structure have adopted respectively fixedly cross bar 30 and being bolted between two hangers 32 in headrest adapter plate 5 lower ends of top stage clip, and the left side of the top stage clip 9 that two structures are identical contacts with the groove bottom of the top stage clip guide groove 25 of headrest drop front 4 lower ends and is connected.2 identical headrest supports 11 of structure all are comprised of transverse tube and vertical tube, 2 transverse tubes in the identical headrest support 11 of 2 structures are vertical with two vertical tubes in the headrest support 11 and adopt welding manner to be connected, 2 transverse tube left sides in the headrest support 11 identical with 2 structures of the back side of headrest fixed panel 5 are welded to connect, in 2 vertical tubes in the identical push rod 10 insert head pillow racks 11 of 2 structures, push rod 10 can move up and down in the vertical tube in headrest support 11, belongs to bearing fit.And two vertical tubes in the headrest support 11 insert in the headrest plastic sleeve 39 on original cushion frame, there are three grooves the lower end of two vertical tubes in the headrest support 11, can with head rest cover plastic barrel 39 in snap close locked, form three gears of active safe headrest device of automobile chair, after the gear adjustment is determined, no matter whether whole active safe headrest device of automobile chair triggers, and the position of headrest fixed panel 5 remains constant.The upper end of push rod 10 is welded to connect with the right-hand member that inserts the headrest snap close top 23 in the headrest adapter plate 5 middle part rectangular through-hole.The right-hand member of the top end face of two rocking arms 6 on lockup arm 7 is welded on, after active safe headrest device of automobile chair triggers, the limit plate 22 of drop front 4 on the headrest fixed panel 5 that is moved upward to forward under the driving of two top stage clips 9 and is fixed between two hangers 32 in upper end of resting the head on contacts, and the anglec of rotation of restriction rocking arm 6 (rocking arm 6 is vertical with headrest adapter plate 5) is the final position of drop front 4 thereby control is rested the head on.The midway location of headrest adapter plate 5 is provided with rectangular through-hole, so that headrest snap close top 23 can move up and down in rectangular through-hole, the snap close top 23 of realizing resting the head on fastens with headrest snap close bottom 8 or throws off.The lower end of headrest fixed panel 5 is provided with for 2 bolt holes that structure is identical that the identical top stage clip 9 of 2 structures is installed, the rotation axis of the bolt hole that 2 structures are identical respectively with headrest drop front 4 on the plane of symmetry of top stage clip guide groove 25 of two rectangles coplanar.
Consult Fig. 8, interlock assembly 2 comprises crash panel 12, spring guide barrel construction framework 13, bump buckle connecting plate 14, bottom stage clip 15 that two structures are identical, trigger fixedly cross bar 34 of the snap close bottom 24 bottom stage clip identical with two structures.
Consult Fig. 9, described spring guide barrel construction framework 13 is to be that the shape plate of Q235 is welded by 5 bulk matter.5 blocks of shape plates are respectively the thick framework header board 26 of 1mm, plate 27 behind the thick framework of 1mm, and the framework side plate 29 that the 3mm that 28, two structures of chassis base that 2mm is thick are identical is thick forms.Spring guide barrel construction framework 13 provides directional tagging for bottom stage clip 15 and crash panel 12.The centre of plate 27 is engraved structure behind framework header board 26 and the framework, and purpose is to alleviate quality, is processed with the technique gap at two ends, the left and right sides, is convenient to the framework side plate 29 identical with the structure that places respectively both sides and welds mutually.Chassis base 28 is reserved the space of placement for oblong and the middle plate structure spare that gap is arranged, middle gap for bump buckle connecting plate 14.Framework side plate 29 upper ends are Rectangular Plate Structure, and its tail end is the oblique plate structure that is provided with webge slot 31.
Consult Figure 10, the two ends of crash panel 12 are the face of cylinder, and the bottom surface at crash panel 12 two ends and the top end face of bottom stage clip 15 are for being welded to connect.Upper surface and the crash panel 12 of bump buckle connecting plate 14 are welded to connect, and the lower end of bump buckle connecting plate 14 is welded to connect with triggering snap close bottom 24 1 end faces that become the T font.When normally travelling, the triggering snap close top 21 in triggering snap close bottom 24 and triggering assembly 3 snaps together into lockup state; In case the generation rear-end impact triggers snap close top 21 and moves backward, trigger snap close top 21 and throw off with triggering snap close bottom 24, the stored energy of compressed bottom stage clip 15 releases moves up thereby crash panel 12 upward movements bump promotes push rod 10.
Consult Figure 11, the bottom stage clip is adopted respectively in the lower end of the bottom stage clip 15 that two structures are identical, and fixedly cross bar 34 and screw are fixed on the two ends of chassis base 28, but because the limited space of spring guide barrel construction framework 13, thereby, the upper end of bottom stage clip 15 with abandoned bolt being connected of crash panel 12 two ends and connected fastening mode, the substitute is and take welding manner with both captive joints.
Consult Figure 12 and Figure 13, described triggering assembly 3 comprises pressure plate 16, two pressure plate guide rod 17, wedge bar 18, triggering assembly framework upper plates 19 and triggering assembly framework lower plate 20 that structure is identical.
Two identical pressure plate guide rods 17 of structure are rectangle or foursquare straight-bar class formation spare for centre portion adopts cross-sectional plane, the two ends of the pressure plate guide rod 17 that two structures are identical all are provided with the cuboid that protrudes to the same side, the left side of intermediate portion adopts welding manner to be connected with the right side of pressure plate 16, two identical pressure plate guide rods 17 of structure become up and down Parallel Symmetric layout in the right side of pressure plate 16, its two ends cuboid together to the right, the two ends cuboid can limit the parallel motion of pressure plate 16 in the chute set on the cushion frame left side wing plate 38 that is placed on the original chair skeleton and the cushion frame right side wing plate.Triggering the left side of assembly framework upper plate 19 adopts welding manner to be connected with the right side of the pressure plate guide rod 17 that is in upper end, pressure plate 16 right sides, the right side of triggering assembly framework upper plate 19 is connected with the left side employing welding manner of vertical plate in triggering assembly framework lower plate 20, it is vertical with pressure plate 16 to trigger assembly framework upper plate 19, the centre of triggering assembly framework upper plate 19 is engraved structure, and purpose is to alleviate the quality that triggers assembly framework upper plate 19.Triggering assembly framework lower plate 20 is comprised of four dull and stereotyped being connected successively from beginning to end, the left side that assembly framework lower plate 20 1 ends are namely triggered in the left side of first flat board is welded to connect with the right side that is in the pressure plate guide rod 17 of lower end, pressure plate 16 right side, and be in plumbness with pressure plate 16, second flat board and first flat board angled (30 to 60 spend) that form assembly framework lower plate 20, the 3rd opening plate is perpendicular to first flat board, the 4th opening plate is again perpendicular to the 3rd flat board, triggers thus assembly framework lower plate 20 and is by the Shell-Class framing member of a rectangular flat through forming for folding three times.First flat board in the triggering assembly framework lower plate 20 and the centre of second flat board also are engraved structure, and purpose also is the quality that triggers assembly framework lower plate 20 in order to alleviate.Trigger the gap structure that the triggering snap close bottom 24 with in the assembly 2 that links that i.e. the 3rd centre with the 4th flat board of the end (right-hand member) of assembly framework lower plate 20 be provided with rectangle snaps together and namely trigger snap close top 21.Wedge bar 18 adopts welding manner to be fixed on and triggers on the surface of assembly framework upper plate 19 right-hand members, wedge bar 18 is rectangle or foursquare straight-bar class formation spare for centre portion adopts cross-sectional plane, the two ends of wedge bar (18) be provided with and the assembly 2 medi-spring guide barrel construction frameworks 13 that link on the equipped wedge of webge slot 31.
Consult Figure 14, trigger backward motion of assembly framework upper plate 19, mobile backward in the webge slot 31 of wedge bar 18 on spring guide barrel construction framework 13, thus and along with increasing gradually, the increase resistance of displacement avoids false triggering.The lower surface of webge slot 31 is the plane, and upper surface is from the horizontal by 8 degree angles, and the slit between wedge 18 and the webge slot 31 is the consideration for process and assemble.Webge slot 31 is positioned on the framework side plate 29, the both sides that are placed in, one of every side.When occupant's shoulder squeeze pressure plate 16, trigger assembly 3 integral body and move backward, wedge 18 also moves backward with it, but because the existence of webge slot 31, along with the backward gradually increase of displacement, the resistance that is subject to increases gradually, and wedge begins to occur crimp.The stress-displacement curve of its wedge 18 as shown in figure 15.Show that through investigation the occupant uses in the vehicle normal, shoulder is generally less than 300N to the pressure of backrest; And when rear-end impact occurs when, shoulder to the pressure of backrest about 1100N.Wedge bar 18 and webge slot 31 are carried out the stress simulation analysis, and the result shows, when pressure during less than 400N, wedge 18 is substantially motionless; When pressure during greater than 400N, wedge 18 beginnings relatively move in webge slot 31; When pressure reached 800N, relative displacement reached 4mm, triggered and to trigger also mobile 4mm backward of snap close top 21 in the assembly 3, just was separated with triggering snap close bottom 24, reached the triggering effect; When pressure during greater than 800N, relative displacement increases, but is 5mm to the maximum, and activation time shortens relatively.
Consult Figure 16, motion diagram of circuit for the Novel car seat active safe headrest device, when automobile generation rear-end impact, the occupant is under the effect of inertia, shoulder squeeze pressure plate 16, drive and trigger backward motion of assembly framework lower plate 20, so that trigger snap close top 21 and trigger 24 disengagements of snap close bottom, crash panel 12 is upward movement under the driving of bottom stage clip 15, the distance of bottom stage clip 15 upward movements has remedied under three gears the diff-H of push rod 10 in the headrest assembly 1, each gear can increase 20mm, can increase 40mm at most, thereby realize 3 grades of adjustable functions, collide with push rod 10 in the process of crash panel 12 upward movements, push rod 10 is subject to the collision upward movement of crash panel 12, then throw off with headrest snap close bottom 8 on rest the head on snap close top 23, headrest drop front 4 is under the effect of top stage clip 9, drive simultaneously rocking arm 6, finish forward upward movement, in the process that rocking arm 6 rotates, because the limit plate 22 on the lockup arm 7 on the rocking arm 6 and the headrest fixed panel 5 is in contact with one another, thereby limited the rotational angle of rocking arm 6, headrest integral body remains on the fixed position, at this moment, headrest drop front 4 has moved forward 40mm, and 30mm has moved up.
Consult Figure 17, the car seat back frame that will install for active safe headrest device of automobile chair shown in the figure.Car seat back frame comprises 2 spring guide barrel construction framework adapter plate 37, the cushion frame left side wing plate 38 that is provided with pressure plate upper rail 35 and pressure plate lower guide channel 36, the cushion frame right side wing plate that is provided with pressure plate upper rail 35 and pressure plate lower guide channel 36,2 headrest plastic sleeve 39,2 headrest metal sleeves 40 and pipe supports 41 that structure is identical that structure is identical that structure is identical, wherein, cushion frame left side wing plate 38 is the Sheet Metal Part of symmetry with cushion frame right side wing plate.2 identical pressure plate upper rails 35 of structure are arranged on cushion frame left side wing plate 38 and cushion frame right side wing plate upper end symmetrically, 2 identical pressure plate lower guide channels 36 of structure are arranged on the below of the identical pressure plate upper rail 35 of 2 structures symmetrically, pressure plate upper rail 35 and pressure plate lower guide channel 36 the insides on the cushion frame left side wing plate 38 that the two ends of triggering the identical pressure plate guide rod 17 of two structures in the assembly 3 place respectively the seat back-rest framework both sides and the cushion frame right side wing plate.Pressure plate guide rod 17 can be at the relative displacement of pressure plate upper rail 35 and pressure plate lower guide channel 36 the insides generation 5mm.Two ends along the symmetrically arranged spring guide barrel construction of cushion frame longitudinal centerline framework adapter plate 37 are welded on respectively on the end face of chair skeleton left side wing plate 38 and cushion frame right side wing plate, and the other end is welded on behind the framework in the spring guide barrel construction framework 13 on the plate 27.Pipe support 41 is welded on the chair skeleton left side wing plate 38 of vertical placement and the inboard of cushion frame right side wing plate upper end, and places the front side of spring guide barrel construction framework adapter plate 37.The headrest metal sleeve 40 that 2 structures are identical adopts the mode of welding to be distributed on the crossbeam in the pipe support 41, and 2 identical headrest plastic sleeves 39 of structure are packed in the identical headrest metal sleeve 40 of 2 structures for closely connecting.
Consulting Figure 18, is the annexation of active safe headrest device of automobile chair and seat back-rest framework shown in the figure.Headrest plastic sleeve 39 and headrest metal sleeve 40 are intrinsic part in the former car seat back frame, headrest support 11 inserts in the headrest plastic sleeve 39, there are three grooves the lower end of headrest support 11, can with head rest cover plastic barrel 39 in snap close locked, form three gears of active safe headrest device of automobile chair.When active safe headrest device of automobile chair is in the highest and middle gear, push rod 10 is in unsettled state, does not contact with crash panel 12, after triggering assembly 3 is triggered, bottom stage clip 15 can at first remedy the neutral gear between crash panel 12 and the push rod 10, remakes the bottom surface for push rod 10.When active safe headrest device of automobile chair was in lowest gear, the bottom surface of push rod 10 was connected with the upper surface contact of crash panel 12, and after triggering assembly 3 was triggered, the restoring force of compressed bottom stage clip 15 all acted on the bottom surface of push rod 10.
The principle of work of active safe headrest device of automobile chair:
When automobile generation rear-end impact, occupant's shoulder squeeze pressure plate 16, triggering assembly 3 moves backward with the path of motion integral body of its pressure plate guide rod 17, then trigger snap close top 21 and trigger 24 disengagements of snap close bottom, crash panel 12 under the driving of compressed bottom stage clip 15 along spring guide barrel construction framework 13 upward movements, the crash panel 12 bump push rods 10 of upward movement, so that push rod 10 continues to move up in headrest support 11, also throw off in the upward movement of push rod 10 on headrest snap close bottom 8 and headrest snap close top 23, headrest drop front 4 drives rocking arm 6 and upwards rotates forward under the effect of top stage clip 9, finish parallel motion, limit plate 22 on lockup arm 7 on the rocking arm 6 and the headrest fixed panel 5 contacts simultaneously, thereby define rocking arm 6 pendulum angles, determined the final position of headrest drop front 4.So just so that occupant's head can contact headrest drop front 4 as soon as possible, reduce amount of movement between the relative occupant's chest of occupant's head, effectively reduced the risk that cervical injuries occurs.Adopt simultaneously shoulder to trigger and the wedge structure, actv. has prevented unnecessary false triggering, provides better protection to the occupant.The application of spring is then so that should all can guarantee to trigger between three gears by headrest assembly 1, this is because along with the variation of headrest assembly 1 between three gears, push rod 10 is also along with lower mobile in vertical direction, and under initial condition, there is the distance on the vertical direction between crash panel 12 and the push rod 10, and this distance is headrest assembly 1 amount of movement in vertical direction within 3 grades, the distance of passing by when namely driving with top stage clip 9 remedies the diff-H between third gear, thereby realizes 3 grades of adjustable functions.
The characteristics of active safe headrest device of automobile chair described in the utility model are: when rear-end impact occurs, shoulder squeeze pressure plate 16, absorbed portion of energy, the drop front 4 of resting the head on is afterwards finished the 30mm that moves up, move forward 40mm, so that more early contact of occupant's head is rested the head on, reduced amount of movement between the relative occupant's chest of occupant's head, reduced the risk of neck generation injury; Adopt simultaneously Spring driving, response time is shorter, than the larger improvement of having of other Purely mechanical mechanisms; Simultaneously can also realize 3 grades of adjustable functions of original headrest; Adopt the structure of push rod 10 so that headrest assembly 1 is relatively independent, can dismantle from seat; Adopt shoulder triggering and wedge structure to avoid to a great extent the generation of false triggering; Simple in structure, easy for installation, reduce to greatest extent cost, actv. has been protected the safety of occupant's neck.
Claims (8)
1. an active safe headrest device of automobile chair is characterized in that, described active safe headrest device of automobile chair includes headrest assembly (1);
Described headrest assembly (1) comprises headrest drop front (4), headrest fixed panel (5), 4 rocking arm (6), lockup arm (7), headrest snap close bottom (8), 2 top stage clip (9), 2 push rod (10), 2 headrest support (11), limit plates (22) and headrest snap close top (23) that structure is identical that structure is identical that structure is identical that structure is identical;
4 jiaos of places rocking arm (6) identical with 4 jiaos of place's 4 structures of employing of headrest fixed panel (5) of headrest drop front (4) is rotationally connected with bolt (33), one terminal bolt of the top stage clip (9) that two structures are identical is fixed on the lower end of headrest adapter plate (5), the left side of the top stage clip (9) that two structures are identical is connected with the lower end in contact of headrest drop front (4), 2 transverse tube left sides in the headrest support (11) identical with 2 structures of the back side of headrest fixed panel (5) are welded to connect, the push rod (10) that 2 structures are identical inserts in 2 vertical tubes in the identical headrest support (11) of 2 structures, the upper end of the push rod (10) that 2 structures are identical is welded to connect with the right-hand member that inserts the headrest snap close top (23) in the rectangular through-hole of headrest adapter plate (5) middle part, the right-hand member of the top end face of two rocking arms (6) on lockup arm (7) is welded on, limit plate (22) is fixed on the headrest adapter plate (5) on lockup arm (7) right side.
2. according to active safe headrest device of automobile chair claimed in claim 1, it is characterized in that, described headrest drop front (4) and headrest fixed panel (5) are all metal sheet class formation spare, all adopt flanging process to turn on one's side out inwards at the Si Jiaochu of headrest drop front (4) and the fixed panel (5) of resting the head on and identical carry out bolted hanger (32) with rocking arm (6), headrest drop front (4) is routed up the lower end of a side of hanger (32), the i.e. top stage clip guide groove (25) of uniform 2 identical rectangles between two hangers (32) below, article 2, be welded with headrest snap close bottom (8) on the headrest drop front (4) between the top of top stage clip guide groove (25) and top two hangers (32), the midway location of headrest fixed panel (5) is provided with the rectangular through-hole that headrest snap close top (23) is installed, and the lower end of headrest fixed panel (5) is provided with 2 bolt holes that structure is identical for the identical top stage clip (9) of 2 structures of installation.
3. according to active safe headrest device of automobile chair claimed in claim 1, it is characterized in that, described headrest assembly (1) rest the head in other words in the assembly (1) the identical push rod (10) of 2 structures under 0 to 40mm place be provided with interlock assembly (2);
Described interlock assembly (2) comprises crash panel (12), spring guide barrel construction framework (13), bump buckle connecting plate (14), bottom stage clip (15) that two structures are identical, trigger fixedly cross bar (34) of snap close bottom (24) the bottom stage clip identical with two structures;
Be installed in the top end face of the bottom surface at crash panel (12) two ends among the spring guide barrel construction framework (13) and bottom stage clip (15) for being welded to connect, the bottom stage clip is adopted respectively in the lower end of the bottom stage clip (15) that two structures are identical, and fixedly cross bar (34) and screw are fixed on the two ends of the chassis base (28) among the spring guide barrel construction framework (13), upper surface and the crash panel (12) of bump buckle connecting plate (14) are welded to connect, and the lower end of bump buckle connecting plate (14) is welded to connect with triggering snap close bottom (24) one end faces that become the T font.
4. according to active safe headrest device of automobile chair claimed in claim 3, it is characterized in that, described spring guide barrel construction framework (13) by framework header board (26), framework after plate (27), chassis base (28) the framework side plate (29) identical with two structures be welded;
Plate (27) is the plate structure spare of middle hollow out behind framework header board (26) and the framework, be processed with at two ends, the left and right sides and be convenient to the technique gap that the framework side plate (29) identical with the structure that places respectively both sides welds mutually, chassis base (28) is provided with the plate structure spare of the gap that bump buckle connecting plate (14) is installed for oblong and centre, framework side plate (29) upper end is Rectangular Plate Structure, and its lower end is for being provided with the oblique plate of webge slot (31).
5. according to active safe headrest device of automobile chair claimed in claim 3, it is characterized in that the lower end of described interlock assembly (2) is provided with triggers assembly (3);
Described triggering assembly (3) comprises pressure plate (16), two pressure plate guide rod (17), wedge bar (18), triggering assembly framework upper plates (19) and triggering assembly framework lower plate (20) that structure is identical;
The centre portion of the pressure plate guide rod (17) that is parallel to each other that two structures are identical adopts welding manner to be connected with the right side of pressure plate (16), triggering the left side of assembly framework upper plate (19) adopts welding manner to be connected with the pressure plate guide rod (17) that is in upper end, pressure plate (16) right side, the right side of triggering assembly framework upper plate (19) adopts welding manner to be connected with the left side of vertical plate in triggering assembly framework lower plate (20), and wedge bar (18) employing welding manner is fixed on the surface of triggering assembly framework upper plate (19) right-hand member.
6. according to active safe headrest device of automobile chair claimed in claim 5, it is characterized in that, described triggering assembly framework lower plate (20) is the Shell-Class framing member that is connected successively by four dull and stereotyped head and the tail, first flat board is in horizontality, second flat board that forms assembly framework lower plate (20) becomes 30 to 60 degree with first flat board, the 3rd opening plate is perpendicular to first flat board, the 4th opening plate is again perpendicular to the 3rd flat board, form to trigger first flat board of assembly framework lower plate (20) and be provided with rectangular through-hole in the middle of dull and stereotyped with second, trigger assembly framework lower plate (20) right-hand member be the 3rd midway location with the 4th flat board be provided with and the assembly that links (2) in the triggering snap close top (21) that snaps together, triggering snap close bottom (24).
7. according to active safe headrest device of automobile chair claimed in claim 5, it is characterized in that, the identical pressure plate guide rod (17) of described two structures is rectangle or foursquare straight-bar class formation spare for centre portion adopts cross-sectional plane, and the two ends of the pressure plate guide rod (17) that two structures are identical all are provided with being used for of protruding to the right and are placed on cuboid in the chute on original chair skeleton cushion frame left side wing plate (38) and the cushion frame right side wing plate.
8. according to active safe headrest device of automobile chair claimed in claim 5, it is characterized in that, described wedge bar (18) is rectangle or foursquare straight-bar class formation spare for centre portion adopts cross-sectional plane, the two ends of wedge bar (18) be provided with and the assembly that links (2) medi-spring guide barrel construction framework (13) on the equipped wedge of webge slot (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473776 CN202863203U (en) | 2012-09-17 | 2012-09-17 | Active safety headrest device of automobile seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473776 CN202863203U (en) | 2012-09-17 | 2012-09-17 | Active safety headrest device of automobile seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202863203U true CN202863203U (en) | 2013-04-10 |
Family
ID=48029950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220473776 Withdrawn - After Issue CN202863203U (en) | 2012-09-17 | 2012-09-17 | Active safety headrest device of automobile seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202863203U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887089A (en) * | 2012-09-17 | 2013-01-23 | 吉林省汽车零部件研发中心有限公司 | Active safe headrest device for car seat |
| CN105270226A (en) * | 2015-11-11 | 2016-01-27 | 北华航天工业学院 | Safety head restraint device for actively buffering automobile collision |
| CN112092701A (en) * | 2019-06-18 | 2020-12-18 | 株式会社泰极爱思 | Head rest |
| CN116475879A (en) * | 2023-06-21 | 2023-07-25 | 广东金玻智能装备有限公司 | Briquetting assembly and glass edging machine applying same |
-
2012
- 2012-09-17 CN CN 201220473776 patent/CN202863203U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887089A (en) * | 2012-09-17 | 2013-01-23 | 吉林省汽车零部件研发中心有限公司 | Active safe headrest device for car seat |
| CN102887089B (en) * | 2012-09-17 | 2015-05-20 | 吉林省汽车零部件研发中心有限公司 | Active safe headrest device for car seat |
| CN105270226A (en) * | 2015-11-11 | 2016-01-27 | 北华航天工业学院 | Safety head restraint device for actively buffering automobile collision |
| CN112092701A (en) * | 2019-06-18 | 2020-12-18 | 株式会社泰极爱思 | Head rest |
| CN116475879A (en) * | 2023-06-21 | 2023-07-25 | 广东金玻智能装备有限公司 | Briquetting assembly and glass edging machine applying same |
| CN116475879B (en) * | 2023-06-21 | 2023-10-10 | 广东金玻智能装备有限公司 | Briquetting assembly and glass edging machine applying same |
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