WO2020220826A1 - 一种翻转头枕 - Google Patents

一种翻转头枕 Download PDF

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Publication number
WO2020220826A1
WO2020220826A1 PCT/CN2020/078185 CN2020078185W WO2020220826A1 WO 2020220826 A1 WO2020220826 A1 WO 2020220826A1 CN 2020078185 W CN2020078185 W CN 2020078185W WO 2020220826 A1 WO2020220826 A1 WO 2020220826A1
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WO
WIPO (PCT)
Prior art keywords
locking
headrest
headrest body
rotating
rotating tooth
Prior art date
Application number
PCT/CN2020/078185
Other languages
English (en)
French (fr)
Inventor
曹耀伟
朱敏
李侠
徐东海
Original Assignee
上海延锋座椅有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海延锋座椅有限公司 filed Critical 上海延锋座椅有限公司
Priority to US17/600,007 priority Critical patent/US11701989B2/en
Priority to KR1020217037935A priority patent/KR20220002984A/ko
Priority to JP2021562907A priority patent/JP2022530022A/ja
Priority to EP20798948.4A priority patent/EP3964389A4/en
Publication of WO2020220826A1 publication Critical patent/WO2020220826A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/841—Tiltable characterised by their locking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/841—Tiltable characterised by their locking devices
    • B60N2/844—Release mechanisms, e.g. buttons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/856—Tiltable movable to an inoperative or stowed position

Definitions

  • the invention relates to the technical field of seat headrests, in particular to a turning headrest.
  • the headrest of a car seat is a device set to improve the comfort and safety of the car.
  • Ordinary car seat headrests can only provide the function of height adjustment. Such seats will not only hinder the vision of the rear passengers and make the rear passengers feel depressed, but also block the driver's sight of the rear vehicle.
  • the authorized announcement number is CN200971065Y.
  • the patent includes headrest foaming and headrest insertion.
  • the upper end of the headrest rod and the headrest guide sleeve is fixed on the headrest foam, the lower end penetrates into the headrest guide sleeve, the lower end of the headrest rod is turned over to lock the slot, the headrest guide sleeve includes the guide sleeve
  • the main body and the guide sleeve are provided with a pin shaft.
  • the pin shaft is provided with a turning part.
  • the turning part is provided with a locking part, which is matched and locked with the turning lock notch.
  • the guide sleeve restricts the plunger from coming out, and the headrest is foamed and turned forward through the guide sleeve, thereby achieving the function of providing a good view for the rear passengers.
  • the application publication number is CN108016338A, which includes: the bracket assembly; the shaft is set on the bracket assembly and can be Rotating cam; cam reset element connected to the cam and bracket assembly; the shaft is set on the locking pawl on the bracket assembly, the cam drives the locking pawl in the locked state and the unlocked state through forward and reverse movement
  • the shaft is set on the rotating shaft on the bracket assembly, and the rotating shaft is provided with a locking tooth plate.
  • the current design of the headrest of the reversible car seat is very similar in structure. They are composed of the headrest frame, the core part of the reversible shell and the unlocking mechanism, but they all exist when the car is seriously affected by the front or In the event of a rear collision, the risk of automatic unlocking cannot meet the safety requirements of the occupants.
  • the existing shell-turning headrests are relatively complicated in structure and high in cost.
  • the technical problem to be solved by the present invention is to provide a safe and simple structure in view of the risk of automatic unlocking when the car is hit by a serious frontal or rear impact, complex structure and high cost of the existing reversible headrest , Low-cost flip headrest.
  • a reversible headrest includes a headrest body and a headrest inserting rod, the headrest body is wrapped and hinged on the crossbar of the headrest inserting rod, and the two vertical rods of the headrest inserting rod are inserted into the seat
  • the chair is characterized in that it also includes:
  • a set of torsion springs arranged on the cross bar of the headrest plunger and located in the headrest body, one end of the torsion spring acts on the fixed teeth, and the other end of the torsion spring acts on the head Pillow body
  • the rotating tooth has a rotating tooth portion.
  • the headrest body is locked in the initial use position; when the rotating tooth portion cooperates with the headrest body rotating tooth portion on the fixed tooth, the headrest body is in a reversible position; the rotating tooth portion and the fixed tooth
  • the locking portion of the headrest body on the tooth is turned over, the headrest body is locked in the flattened position when the locking portion cooperates;
  • a reset elastic element one end of the reset elastic element acts on the rotating tooth, and the other end of the reset elastic element acts on the headrest body; the reset elastic element forces the rotating tooth portion on the rotating tooth There is always a certain contact pressure between the locking part of the headrest body on the fixed teeth, the rotating tooth part of the headrest body and the locking part after the headrest body is turned over.
  • the rotating tooth portion of the headrest body is located between the locking portion of the headrest body and the locking portion after the headrest body is turned over.
  • the locking portion of the headrest body is composed of a fan-shaped notch
  • the fan-shaped notch is composed of a convex arc, a first locking straight edge and a lock at both ends of the convex arc.
  • the first locking straight edge is adjacent to the rotating tooth portion of the headrest body, and the first locking straight edge and the locking concave arc edge enclose a first locking Recessed angle;
  • the headrest body rotating tooth portion is composed of a convex arc, one end of the convex arc is connected with the first locking straight edge;
  • the locking portion of the headrest body is turned over by a straight
  • the second locking concave angle enclosed by the edge and the other end of the convex arc is formed;
  • the rotating tooth portion is composed of a first locking arc, a sliding-fitting concave arc, and a second locking arc at one end, One end of the first locking arc is connected to one end of the sliding-fitting concave arc, and the second locking arc is connected to the other end of the sliding-fitting concave arc and encloses the other end of the sliding-fitting concave arc A locking lobe;
  • the locking lobes in the rotating teeth are inserted into the first locking recesses in the headrest body locking portion, and the second locking arc In locking contact with the first locking straight edge, and the first locking arc is in locking contact with the locking concave arc edge;
  • the locking lobe in the rotating tooth portion gradually exits the first locking concave corner in the locking portion of the headrest body until it exits completely, and the second locking arc gradually and the The first straight locking edge gradually departs from the locking contact until completely out of the locking contact, and the first locking arc and the locking concave arc edge gradually depart from the locking contact until completely out of the locking contact;
  • the sliding-fit concave arc on the rotating tooth is in sliding contact with the convex arc in the rotating tooth portion of the headrest body;
  • the locking lobe in the rotating tooth portion is inserted into the second locking concave corner in the locking portion after the headrest body is turned over, and the first in the rotating tooth portion
  • the two locking arcs are in locking contact with the straight edges in the locking portion after the headrest body is turned over;
  • the rotating teeth are first unlocked, and the locking lobes in the rotating teeth gradually exit the first locking part of the headrest body after the headrest body is turned over.
  • the second locking arc in the rotating tooth portion and the straight edge in the locking portion after the headrest body is turned over gradually depart from the locking contact until completely out of the locking contact.
  • it further includes a rotating shaft, the rotating shaft is arranged in the headrest body, and the rotating tooth is fixed on the rotating shaft.
  • the present invention further includes an unlocking handle, the unlocking handle is fixed on the rotating shaft, the reset elastic element is a reset extension spring, and one end of the reset extension spring acts on the unlocking On the handle, the other end of the reset tension spring acts on the unlock handle and indirectly acts on the rotating tooth through the unlock handle and the rotating shaft; the reset tension spring drives the rotating tooth to rotate through the unlock handle and the rotating shaft.
  • an unlocking mechanism is further included, and the unlocking mechanism drives the rotating tooth to rotate to unlock.
  • the unlocking mechanism is an unlocking strap, one end of the unlocking strap is connected to the rotating tooth, and the other end of the unlocking strap is stretched from a proper position of the headrest body Pull the unlocking strap to drive the rotating tooth to rotate to unlock.
  • the headrest body is composed of a front half headrest and a rear half headrest, and an unlocking strap extension hole is opened on the rear half headrest, and the unlocking strap is formed by The unlocking strap extends from the extension hole to extend the rear half headrest.
  • the headrest part is inserted into the first locking concave angle in the locking portion of the headrest body through the locking lobe in the rotating tooth portion, and the second locking
  • the arc is in contact with the first locking straight side and the first locking arc is in contact with the locking concave arc side to lock itself. Its self-locking ability is strong. There is no automatic unlocking when the car is hit by a serious front or rear impact. risks of.
  • the locking lobe in the rotating tooth portion is inserted into the second locking concave angle in the locking portion after the headrest body is turned over, and the second locking arc in the rotating tooth portion After the headrest body is turned over, the straight edge of the locking part is locked in contact and self-locking, and its self-locking ability is strong, and there is no risk of automatic unlocking when the car is hit by a serious frontal or rearward impact.
  • the concave arc of the sliding fit on the rotating teeth is in sliding contact with the convex arc in the rotating tooth portion of the headrest body, thereby eliminating the gap and making the overturning flexible.
  • the turning headrest of the invention has few parts, simple structure and low cost.
  • Fig. 1 is a schematic diagram of the state of the inverting headrest of the present invention in normal use.
  • Fig. 2 is a schematic diagram of the state of the inverting headrest of the present invention when it is completely flattened.
  • Figure 3 is a schematic diagram of the internal structure of the inverted headrest of the present invention.
  • Figure 4 is an exploded schematic view of the inverting headrest of the present invention viewed from one direction.
  • Figure 5 is an exploded schematic view of the inverting headrest of the present invention viewed from another direction.
  • Fig. 6 is an exploded schematic view of the inverted headrest of the present invention viewed from one direction after the headrest body is removed.
  • Fig. 7 is an exploded schematic view of the inverted headrest of the present invention viewed from another direction after the headrest body is removed.
  • FIG. 8 is a schematic diagram of the positional relationship between the rotating teeth and the fixed teeth when the turning headrest of the present invention is in normal use.
  • FIG. 9 is a schematic diagram of the positional relationship between the rotating teeth and the fixed teeth when the turning headrest of the present invention is in an unlocked state.
  • FIG. 10 is a schematic diagram of the positional relationship between the rotating teeth and the fixed teeth when the inverting headrest of the present invention is in an inverted state.
  • FIG. 11 is a schematic diagram of the positional relationship between the rotating teeth and the fixed teeth when the turning headrest of the present invention is in a flattened state.
  • Fig. 12 is an internal schematic diagram of the inverting headrest of the present invention in normal use.
  • Fig. 13 is an internal schematic diagram of the turning headrest of the present invention when it is in an unlocked state.
  • Fig. 14 is an internal schematic diagram of the inverted headrest of the present invention when it is in an inverted state.
  • Figure 15 is an internal schematic diagram of the inverting headrest of the present invention when it is in a flattened state.
  • Fig. 16 is a schematic diagram of the assembly among the unlocking piece, the rotating teeth and the rotating shaft in the turning headrest of the present invention.
  • Fig. 17 is a schematic diagram of the assembly among the unlocking piece, rotating teeth, rotating shaft, and unlocking strap in the inverting headrest of the present invention.
  • Fig. 18 is a schematic diagram of the unlocking piece, rotating teeth, rotating shaft, unlocking strap, and resetting tension spring in the inverted headrest of the present invention being assembled inside the rear half of the headrest.
  • Fig. 19 is a schematic diagram of assembling the fixed teeth in the inverted headrest and the cross bar in the headrest plunger of the present invention.
  • 20 is a schematic diagram of the fixed teeth, torsion spring and the cross bar in the headrest inserting rod of the inverted headrest of the present invention viewed from one direction after being assembled.
  • Fig. 21 is a schematic diagram of the fixed teeth, torsion spring and the cross bar in the headrest inserting rod of the inverted headrest of the present invention viewed from another direction after being assembled.
  • Figure 22 is an exploded schematic view of the inverted headrest of the present invention viewed from one direction after the front half of the headrest is removed.
  • Fig. 23 is an exploded schematic view of the inverted headrest of the present invention viewed from another direction after the front half of the headrest is removed.
  • Figure 24 is an exploded schematic view of the inverted headrest of the present invention viewed from another direction after the front half of the headrest is removed.
  • Figure 25 is an exploded schematic view of the inverted headrest of the present invention viewed from another direction after the front half of the headrest is removed.
  • Fig. 26 is a schematic diagram of the internal structure of the inverting headrest of the present invention in normal use.
  • Figure 27 is a schematic diagram of the internal structure of the inverting headrest of the present invention when it is completely flattened.
  • the inverted headrest shown in the figures includes a headrest body 100 and a headrest rod 200.
  • the headrest insert rod 200 is basically the same as the prior art, and also includes a horizontal rod 210 and two vertical rods 220 and 230.
  • the left and right ends of the horizontal rod 210 are connected to the upper ends of the two vertical rods 220 and 230. It can be integrally formed or welded.
  • the headrest body 100 is basically the same as the prior art, and is formed by buckling the front half headrest 110 and the rear half headrest 120. Both the front half headrest 110 and the rear half headrest 120 are provided with semi-circular grooves 111 and 121 for hinges. When the front half headrest 110 and the rear half headrest 120 are buckled on the headrest insertion rod 200, the semicircular groove 111 on the front half headrest 110 and the semicircular groove 121 on the rear half headrest 120 are hinged on the cross bar 210, In this way, the entire headrest body 100 is turned around the cross bar 210.
  • front half headrest 110 and the rear half headrest 120 are respectively provided with half holes 112 and 122 for the headrest vertical bars 220 and 230 to pass through. After the front half headrest 110 and the rear half headrest 120 are fastened, the vertical bars 220 and 230 pass through the headrest body 100 through the half holes 112 and 122.
  • the lower ends of the two vertical rods 220 and 230 are inserted into the seat back 300, so that the headrest body 100 can be mounted on the seat back 300.
  • half cavities 113 and 123 are provided in the front half headrest 110 and the rear half headrest 120 to install the headrest turning and locking and unlocking mechanisms. After the front half headrest 110 and the rear half headrest 120 are buckled, the headrest is turned over.
  • the lock and unlock mechanism 400 is located in the installation cavity composed of the half cavities 113 and 123.
  • the headrest turning and locking and unlocking mechanism 400 shown in the figure includes fixed teeth 410, torsion spring 420, reset extension spring 430, unlocking handle 440, rotating teeth 450, rotating shaft 460, and wire pull ring 470 , Unlock the pull strap 480.
  • the fixed teeth 410 and the torsion spring 420 are sleeved on the cross bar 210, wherein the fixed teeth 410 are also welded to the cross bar 210.
  • One end of the torsion spring 420 acts on the fixed teeth 410, and the other end acts on the rear headrest 120 of the headrest body 100; the function of the torsion spring 420 is to reset the headrest body 100.
  • the rotating shaft 460 is located in the half cavity 129, and its two end shafts are arranged on the rear headrest 120. 16 in particular, the unlocking handle 440 and the rotating tooth 450 are welded to the rotating shaft 460.
  • One end of the reset tension spring 430 is hooked on the unlocking handle 440, and the other end is hooked on the rear headrest 120.
  • One end of the unlocking strap 480 is connected to the rotating tooth 450 through a wire pull ring 470.
  • An unlocking strap extension hole 124 is also provided on the rear headrest 120, and the other end of the unlocking strap 480 extends out of the rear half headrest 120 from the unlocking strap extension hole 124. Pulling the unlocking strap 480 can drive the rotating tooth 450 and the rotating shaft 460 to rotate to realize unlocking.
  • the reset tension spring 430 extends and stores energy.
  • the reset tension spring 430 can be rotated in the reverse direction through the rotating shaft 460, so that the rotating tooth 450 returns to the locked state.
  • the fixed teeth 410 are provided with a headrest body locking portion 411, a headrest body rotating tooth portion 412, and a headrest body turning over locking portion 413.
  • the headrest body rotating tooth portion 412 is located between the headrest body locking portion 411 and the headrest body locking portion 413 after turning over.
  • a rotating tooth portion 451 is provided on the rotating tooth 450.
  • the headrest body 100 is locked in the initial use position.
  • the rotating tooth portion 451 cooperates with the headrest body rotating tooth portion 412 on the fixed tooth 410
  • the headrest body 100 is in a reversible position.
  • the rotating tooth portion 451 and the locking portion 413 of the headrest body on the fixed tooth 410 are turned over, the headrest body 100 is locked in the flat position.
  • the locking portion 411 of the headrest body is composed of a fan-shaped notch surrounded by a convex arc 411a, a first locking straight edge 411b and a locking concave arc edge 411c at both ends of the convex arc 411a.
  • the locking straight side 411b is adjacent to the rotating tooth portion 412 of the headrest body, and the first locking straight side 411b and the locking concave arc side 411c enclose a first locking concave angle 411d.
  • the rotating tooth portion 412 of the headrest body is composed of a convex arc 412a, and one end of the convex arc 412a is connected with the first locking straight edge 411b.
  • the locking portion 413 is formed by a second locking concave corner 413b enclosed by a straight side 413a and the other end of the convex arc 412a.
  • the rotating tooth portion 451 is composed of a first locking arc 451a, a sliding-fitting concave arc 451b, and a second locking arc 451c at one end.
  • One end of the first locking arc 451a is connected to one end of the sliding-fitting concave arc 451b.
  • the locking arc 451c is connected to the other end of the sliding-fitting concave arc 451b and encloses a locking protruding angle 451d with the other end of the sliding-fitting concave arc 451b.
  • the locking lobe 451d in the rotating tooth portion 451 is inserted into the first locking recess 411d in the headrest body locking portion 411,
  • the two locking arcs 451c are in locking contact with the first locking straight side 411b, and the first locking arc 451a is in locking contact with the locking concave arc side 411c.
  • the locking lobe 451d in the rotating tooth portion 451 is inserted into the second locking concave corner 413b in the locking portion 413 after the headrest body is turned over, and the rotating tooth
  • the second locking arc 451c in the portion 451 is locked in contact with the straight edge 413a in the locking portion 413 after the headrest body is turned over.
  • the headrest body 100 When the headrest body 100 is completely flattened and needs to be returned to use, first unlock the pull strap 480 and pull the rotating tooth 450 to unlock, and the locking lobe 451d in the rotating tooth part 451 gradually exits the locking part 413 after the headrest body is turned over
  • the second locking recessed angle 413b of the rotating tooth portion 451 is completely retracted, and the second locking arc 451c in the rotating tooth portion 451 and the straight edge 413a in the locking portion 413 are gradually separated from the locking contact until completely out of the locking contact. .
  • the torsion spring 420 drives the headrest body 100 to reversely flip to the initial use state.
  • the reset tension spring 430 drives the shaft 460 through the unlocking handle 440 to always maintain a torsion in the initial direction, and the rotating tooth 451 on the rotating tooth 450 is forced by the rotating shaft 460 to always be in contact with the headrest body on the fixed tooth 410.
  • the aforementioned unlocking strap 480 can also be replaced by another unlocking mechanism, as long as the mechanism that can drive the rotating tooth 450 to rotate and unlock, such as an unlocking cable or an unlocking button, should fall within the protection scope of the present invention.
  • the above-mentioned headrest turning and locking and unlocking mechanism 400 can also adopt other changes.
  • the reset tension spring 430 can be replaced by other reset elastic elements such as compression springs, elastic rubbers, etc., and directly act on the rotating teeth 450.
  • the rotating shaft 460 and the unlocking handle 440 can be eliminated, and the rotating shaft teeth 450 can be directly arranged on the rear headrest 120.
  • the turning headrest of the present invention has the advantages of fewer parts, simple structure and low cost.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Abstract

一种翻转头枕，包括头枕本体(100)和头枕插杆(200)，头枕本体(100)包覆并铰接在头枕插杆(200)的横杆(210)上，头枕插杆(200)的两竖杆(220；230)插入到座椅中，其还包括定齿(410)、扭簧(420)、转动齿(450)、复位拉簧(430)；定齿(410)上设置有头枕本体锁止部(411)、头枕本体转动齿部(412)和头枕本体翻转后锁止部(413)；转动齿(450)上设置有转动齿部(451)；转动齿部(451)与定齿(410)上的头枕本体锁止部(411)配合作用时，头枕本体(100)被锁止在初始使用位置；转动齿部(451)与定齿(410)上的头枕本体转动齿部(412)配合作用时，头枕本体(100)处于可翻转位置；转动齿部(451)与定齿(410)上的头枕本体翻转后锁止部(413)配合作用时，头枕本体(100)被锁止在翻平位置。本翻转头枕具有自锁能力强，零件少，结构简单，成本低的优点。

Description

一种翻转头枕 技术领域
本发明涉及座椅头枕技术领域,特别涉及一种翻转头枕。
背景技术
汽车座椅的头枕是为了提高汽车乘坐舒适性和安全性而设置的一种装置。普通的汽车座椅头枕只能提供调节高低的功能，这样的座椅不仅会阻碍后排乘客的视野，使后排乘客产生压抑感，而且还会阻挡驾驶员观察后方车辆的视线。
为此，本申请人在2006年11月24日向中国国家知识产权局提交了一份有关可翻转头枕的实用新型申请，其授权公告号为CN200971065Y,该专利包括头枕发泡、头枕插杆和头枕导套，所述头枕插杆上端固定在头枕发泡上，下端穿入头枕导套内，头枕插杆的下端翻转锁止槽口，头枕导套包括导套本体，导套本体内设有销轴，销轴上穿设有翻转件，翻转件内设有锁止件，与翻转锁止槽口匹配锁定，当头枕发泡拔出到最高位置时，由导套限制住插杆不会脱出，并通过导套使头枕发泡向前翻转，从而实现为后排乘客提供良好视野的功能。
自该专利发表以后，业界也陆续出现了一些具有可翻转头枕的座椅。但是这些座椅使用的可翻转头枕结构都比较复杂，制造成本也比较高，并且都存在在外力作用下锁止不可靠的问题。
后来本申请人在2017年11月29日向中国国家知识产权局提交了一份有关翻转机构的发明专利申请，申请公布号为CN108016338A，其包括：支架总成；轴设于支架总成上并且可转动的凸轮；连接在凸轮和支架总成上的凸轮复位元件；轴设在支架总成上的锁止棘爪片，凸轮通过正反向运动驱动锁止棘爪片在锁止状态与解锁状态之间进行运动；轴设在支架总成上的转轴，转轴上设置有锁齿板，锁止棘爪片在锁止状态下，锁止棘爪片中的锁止爪与锁齿板上的锁止槽锁止啮合，通过锁齿板限制转轴与支架总成发生相对转动；锁止棘爪片处于解锁位置时，锁止棘爪片中的锁止爪与锁齿板上的锁止槽脱离锁止啮合，转轴与支架总成之间可发生相对转动；连接在齿板和支架总成上的转轴复位扭簧，转轴复位扭簧驱动锁齿板和转轴相对支架总成发生相对转动。
另外，目前可翻转汽车座椅头枕的设计，其结构上都十分相似，都是由头枕骨架及可翻转的壳体核心件和解锁机构构成，但是它们都存在当其汽车受到严重的正面或后面撞击时， 自动解锁的风险，不能满足乘坐者对于安全的要求。另外现有的壳翻转头枕结构都比较复杂，成本也比较高。
发明内容
本发明所要解决的技术问题在于针对现有可翻转头枕所存在的当汽车受到严重的正面或后面撞击时自动解锁的风险和结构复杂、成本高的问题而提供一种安全性好、结构简单、成本低廉的翻转头枕。
本发明所要解决的技术问题可以通过以下技术方案来实现：
一种翻转头枕，包括头枕本体和头枕插杆，所述头枕本体包覆并铰接在所述头枕插杆的横杆上，所述头枕插杆的两竖杆插入到座椅中，其特征在于；还包括：
一固定在所述头枕插杆的横杆上并位于所述头枕本体内的定齿；所述定齿上设置有头枕本体锁止部、头枕本体转动齿部和头枕本体翻转后锁止部，
一套设在所述头枕插杆的横杆上并位于所述头枕本体内的扭簧，所述扭簧的一端作用在所述定齿上，扭簧的另一端作用在所述头枕本体上；
一轴设在所述头枕本体内的转动齿，所述转动齿具有一转动齿部，所述转动齿部与所述定齿上的头枕本体锁止部配合作用时，所述头枕本体被锁止在初始使用位置；所述转动齿部与所述定齿上的头枕本体转动齿部配合作用时，所述头枕本体处于可翻转位置；所述转动齿部与所述定齿上的头枕本体翻转后锁止部配合作用时，所述头枕本体被锁止在翻平位置；
一复位弹性元件，所述复位弹性元件的一端作用在所述转动齿上，复位弹性元件的另一端作用在所述头枕本体上；所述复位弹性元件迫使所述转动齿上的转动齿部始终与所述定齿上的头枕本体锁止部、头枕本体转动齿部和头枕本体翻转后锁止部之间具有一定的接触压力。
在本发明的一个优选实施例中，所述头枕本体转动齿部位于所述头枕本体锁止部和头枕本体翻转后锁止部之间。
在本发明的一个优选实施例中，所述头枕本体锁止部由一扇形缺口构成，所述扇形缺口由一段凸弧和位于所述凸弧两端的一条第一锁止直边、一条锁止凹弧边围成，其中所述第一锁止直边与所述头枕本体转动齿部邻接，所述第一锁止直边与所述锁止凹弧边围成一第一锁止凹角；所述头枕本体转动齿部由一段凸型圆弧构成，所述凸型圆弧的一端与所述第一锁止直边连接；所述头枕本体翻转后锁止部由一条直形边与所述凸型圆弧的另一端所围成的第二锁止凹角构成；所述转动齿部由一段第一锁止弧、一段滑动配合凹弧、一端第二锁止弧组成， 其中第一锁止弧的一端与所述滑动配合凹弧的一端连接，所述第二锁止弧与所述滑动配合凹弧的另一端连接并与所述滑动配合凹弧的另一端围成一锁止凸角；
所述头枕本体被锁止在使用状态时，所述转动齿部中的锁止凸角插入到所述头枕本体锁止部中的第一锁止凹角中，所述第二锁止弧与所述第一锁止直边锁止接触，所述第一锁止弧与所述锁止凹弧边锁止接触；
所述转动齿解锁时，所述转动齿部中的锁止凸角逐渐退出所述头枕本体锁止部中的第一锁止凹角直至完全退出，所述第二锁止弧逐渐与所述第一锁止直边逐渐脱离锁止接触直至完全脱离锁止接触，所述第一锁止弧与所述锁止凹弧边逐渐脱离锁止接触直至完全脱离锁止接触；
所述头枕本体翻转过程中，所述转动齿上的滑动配合凹弧与所述头枕本体转动齿部中的凸型圆弧滑动接触；
所述头枕本体完全翻平后，所述转动齿部中的锁止凸角插入到所述头枕本体翻转后锁止部中的第二锁止凹角中，所述转动齿部中的第二锁止弧与所述头枕本体翻转后锁止部中的直形边锁止接触；
所述头枕本体完全翻平后需要重新回到使用状态时，首先所述转动齿解锁，所述转动齿部中的锁止凸角逐渐退出所述头枕本体翻转后锁止部中的第二锁止凹角直至完全退出，所述转动齿部中的第二锁止弧与所述头枕本体翻转后锁止部中的直形边逐渐脱离锁止接触直至完全脱离锁止接触。
在本发明的一个优选实施例中，还包括一转轴，所述转轴轴设在所述头枕本体内，所述转动齿固定在所述转轴上。
在本发明的一个优选实施例中，还包括一解锁柄，所述解锁柄固定在所述转轴上，所述复位弹性元件为一复位拉簧，所述复位拉簧的一端作用在所述解锁柄上，复位拉簧的另一端作用在所述解锁柄并通过解锁柄和转轴间接作用在所述转动齿上；所述复位拉簧通过解锁柄、转轴带动转动齿转动。
在本发明的一个优选实施例中，还包括一解锁机构，所述解锁机构带动所述转动齿转动进行解锁。
在本发明的一个优选实施例中，所述解锁机构为一解锁拉带，所述解锁拉带的一端与所述转动齿连接，解锁拉带的另一端由所述头枕本体的适当位置伸出，拉动所述解锁拉带即可带动转动齿转动进行解锁。
在本发明的一个优选实施例中，所述头枕本体由前半头枕和后半头枕组合而成，在所述后半头枕上开设有一解锁拉带伸出孔，所述解锁拉带由所述解锁拉带伸出孔伸出后半头枕。
由于采用了如上的技术方案，本发明在头枕正常使用时，头枕本土通过转动齿部中的锁止凸角插入到头枕本体锁止部中的第一锁止凹角，和第二锁止弧与第一锁止直边锁止接触，第一锁止弧与锁止凹弧边锁止接触进行自锁，其自锁能力强，不存在当汽车受到严重的正面或后面撞击时自动解锁的风险。
本发明在头枕本体完全翻平后，通过转动齿部中的锁止凸角插入到头枕本体翻转后锁止部中的第二锁止凹角中，和转动齿部中的第二锁止弧与头枕本体翻转后锁止部中的直形边锁止接触进行自锁，其自锁能力强，不存在当汽车受到严重的正面或后面撞击时自动解锁的风险。
本发明的头枕本体在翻转过程中，通过转动齿上的滑动配合凹弧与头枕本体转动齿部中的凸型圆弧滑动接触，消除了间隙，翻转灵活。
本发明的翻转头枕零件少，结构简单，成本低。
附图说明
图1为本发明的翻转头枕处于正常使用时的状态示意图。
图2为本发明的翻转头枕处于完全翻平时的状态示意图。
图3为本发明的翻转头枕的内部结构示意图。
图4为本发明的翻转头枕从一个方向看的分解示意图。
图5为本发明的翻转头枕从另一个方向看的分解示意图。
图6为本发明的翻转头枕除去头枕本体后从一个方向看的分解示意图。
图7为本发明的翻转头枕除去头枕本体后从另一个方向看的分解示意图。
图8为本发明的翻转头枕处于正常使用时，转动齿与定齿之间的位置关系示意图。
图9为本发明的翻转头枕处于解锁状态时，转动齿与定齿之间的位置关系示意图。
图10为本发明的翻转头枕处于翻转状态时，转动齿与定齿之间的位置关系示意图。
图11为本发明的翻转头枕处于翻平状态时，转动齿与定齿之间的位置关系示意图。
图12为本发明的翻转头枕处于正常使用时的内部示意图。
图13为本发明的翻转头枕处于解锁状态时的内部示意图。
图14为本发明的翻转头枕处于翻转状态时的内部示意图。
图15为本发明的翻转头枕处于翻平状态时的内部示意图。
图16为本发明的翻转头枕中的解锁片、转动齿、转轴之间的装配示意图。
图17为本发明的翻转头枕中的解锁片、转动齿、转轴、解锁拉带之间的装配示意图。
图18为本发明的翻转头枕中的解锁片、转动齿、转轴、解锁拉带、复位拉簧装配到后半头枕内部的示意图。
图19为本发明的翻转头枕中的定齿与头枕插杆中的横杆装配示意图。
图20为本发明的翻转头枕中的定齿、扭簧与头枕插杆中的横杆装配后从一个方向看的示意图。
图21为本发明的翻转头枕中的定齿、扭簧与头枕插杆中的横杆装配后从另一个方向看的示意图。
图22为本发明的翻转头枕除去前半头枕后从一个方向看的分解示意图。
图23为本发明的翻转头枕除去前半头枕后从另一个方向看的分解示意图。
图24为本发明的翻转头枕除去前半头枕后从又一个方向看的分解示意图。
图25为本发明的翻转头枕除去前半头枕后从再一个方向看的分解示意图。
图26为本发明的翻转头枕处于正常使用时的内部结构示意图。
图27为本发明的翻转头枕处于完全翻平时的内部结构示意图。
具体实施方式
以下结合附图和具体实施方式来进一步描述本发明。
参见图1至图3，图中所示的一种翻转头枕，包括头枕本体100和头枕插杆200。
头枕插杆200与现有技术基本上相同，也包括一根横杆210和两根竖杆220、230，横杆210的左右两端与两根竖杆220、230的上端连接，连接方式可以是一体成型或者焊接。
头枕本体100与现有技术基本上相同，由前半头枕110和后半头枕120扣合而成。在前半头枕110和后半头枕120内均设置有用以铰合的半圆槽111、121。当前半头枕110和后半头枕120扣合在头枕插杆200上时，前半头枕110上的半圆槽111和后半头枕120上的半圆槽121铰合在横杆210上，这样整个头枕本体100就绕横杆210翻转。另外在前半头枕110和后半头枕120内还分别设置有供头枕竖杆220、230穿出的半孔112、122，前半头枕110和后半头枕120扣合后，竖杆220、230由半孔112、122穿出头枕本体100。
两根竖杆220、230的下端插入到座椅靠背300中，就能使头枕本体100安装到座椅靠背300 上。
另外在前半头枕110和后半头枕120内还设置有用以安装头枕翻转及锁止解锁机构的半腔113、123，前半头枕110和后半头枕120扣合后，头枕翻转及锁止解锁机构400位于由半腔113、123组成的安装腔内。
参见图4至图26，图中所示的头枕翻转及锁止解锁机构400包括定齿410、扭簧420、复位拉簧430、解锁柄440、转动齿450、转轴460、钢丝拉环470、解锁拉带480。
特别参见图18至图20，定齿410和扭簧420套在横杆210上，其中定齿410还与横杆210焊接连接。扭簧420的一端作用在定齿410上，另一端作用在头枕本体100的后半头枕120上；扭簧420的作用是使头枕本体100复位。
转轴460位于半腔129内，其两端轴设在后半头枕120上。特别参见图16，解锁柄440、转动齿450焊接在转轴460上。
复位拉簧430的一端勾在解锁柄440上，另一端勾在后半头枕120上。解锁拉带480的一端通过钢丝拉环470与转动齿450连接。在后半头枕120上还开设有一解锁拉带伸出孔124，解锁拉带480的另一端由解锁拉带伸出孔124伸出后半头枕120。拉动解锁拉带480即可带动转动齿450以及转轴460转动，实现解锁。解锁过程中，复位拉簧430伸长蓄能。松开解锁拉带480，复位拉簧430能通过转轴460反向转动，使得转动齿450重新回到锁止状态。
本发明的特点在于：在定齿410上设置有头枕本体锁止部411、头枕本体转动齿部412和头枕本体翻转后锁止部413。头枕本体转动齿部412位于头枕本体锁止部411和头枕本体翻转后锁止部413之间。另外在转动齿450上设置有一转动齿部451。
特别参见图8至图15，转动齿部451与定齿410上的头枕本体锁止部411配合作用时，头枕本体100被锁止在初始使用位置。转动齿部451与定齿410上的头枕本体转动齿部412配合作用时，头枕本体100处于可翻转位置。转动齿部451与定齿410上的头枕本体翻转后锁止部413配合作用时，头枕本体100被锁止在翻平位置。
头枕本体锁止部411由一扇形缺口构成，该扇形缺口由一段凸弧411a和位于凸弧411a两端的一条第一锁止直边411b、一条锁止凹弧边411c围成，其中第一锁止直边411b与头枕本体转动齿部412邻接，第一锁止直边411b与锁止凹弧边411c围成一第一锁止凹角411d。
头枕本体转动齿部412由一段凸型圆弧412a构成，凸型圆弧412a的一端与第一锁止直边411b连接。
头枕本体翻转后锁止部413由一条直形边413a与凸型圆弧412a的另一端所围成的第二锁 止凹角413b构成。
转动齿部451由一段第一锁止弧451a、一段滑动配合凹弧451b、一端第二锁止弧451c组成，其中第一锁止弧451a的一端与滑动配合凹弧451b的一端连接，第二锁止弧451c与滑动配合凹弧451b的另一端连接并与滑动配合凹弧451b的另一端围成一锁止凸角451d。
特别参见图8和图12，头枕本体100被锁止在使用状态时，转动齿部451中的锁止凸角451d插入到头枕本体锁止部411中的第一锁止凹角411d中，第二锁止弧451c与第一锁止直边411b锁止接触，第一锁止弧451a与锁止凹弧边411c锁止接触。
特别参见图9和图13，解锁拉带480拉动转动齿450解锁时，转动齿部451中的锁止凸角451d逐渐退出头枕本体锁止部411中的第一锁止凹角411d直至完全退出，第二锁止弧451c逐渐与第一锁止直边411b逐渐脱离锁止接触直至完全脱离锁止接触，第一锁止弧451a与锁止凹弧边411c逐渐脱离锁止接触直至完全脱离锁止接触。
特别参见图10和图14，头枕本体100翻转过程中，转动齿450上的滑动配合凹弧451b与头枕本体转动齿部412中的凸型圆弧412a滑动接触。
特别参见图11和图15，头枕本体100完全翻平后，转动齿部451中的锁止凸角451d插入到头枕本体翻转后锁止部413中的第二锁止凹角413b中，转动齿部451中的第二锁止弧451c与头枕本体翻转后锁止部413中的直形边413a锁止接触。
头枕本体100完全翻平后需要重新回到使用状态时，首先解锁拉带480拉动转动齿450解锁，转动齿部451中的锁止凸角451d逐渐退出头枕本体翻转后锁止部413中的第二锁止凹角413b直至完全退出，转动齿部451中的第二锁止弧451c与头枕本体翻转后锁止部413中的直形边413a逐渐脱离锁止接触直至完全脱离锁止接触。然后扭簧420驱动头枕本体100反向翻转至初始使用状态。
在上述运动过程中，复位拉簧430通过解锁柄440驱动转轴460始终保持向初始方向运动的一个扭力，通过转轴460迫使转动齿450上的转动齿部451始终与定齿410上的头枕本体锁止部411、头枕本体转动齿部412和头枕本体翻转后锁止部413之间具有一定的接触压力，以增强自锁能力和消除头枕本体100翻转过程中的噪声。
上述解锁拉带480也可以用别的解锁机构所取代，只要能驱动转动齿450转动而解锁的机构例如解锁拉索或解锁按钮等都应该属于本发明的保护范围之内。
另外上述头枕翻转及锁止解锁机构400还可以采用另外一些变化，复位拉簧430可以采用另外一些复位弹性元件例如压簧、弹性橡胶等所取代，直接作用在转动齿450上。同时也可以 取消转轴460和解锁柄440，将转轴齿450直接轴设在后半头枕120上。
本发明的翻转头枕具有零件少，结构简单，成本低的优点。

Claims (8)

  1. 一种翻转头枕，包括头枕本体和头枕插杆，所述头枕本体包覆并铰接在所述头枕插杆的横杆上，所述头枕插杆的两竖杆插入到座椅中，其特征在于；还包括：
    一固定在所述头枕插杆的横杆上并位于所述头枕本体内的定齿；所述定齿上设置有头枕本体锁止部、头枕本体转动齿部和头枕本体翻转后锁止部，
    一套设在所述头枕插杆的横杆上并位于所述头枕本体内的扭簧，所述扭簧的一端作用在所述定齿上，扭簧的另一端作用在所述头枕本体上；
    一轴设在所述头枕本体内的转动齿，所述转动齿具有一转动齿部，所述转动齿部与所述定齿上的头枕本体锁止部配合作用时，所述头枕本体被锁止在初始使用位置；所述转动齿部与所述定齿上的头枕本体转动齿部配合作用时，所述头枕本体处于可翻转位置；所述转动齿部与所述定齿上的头枕本体翻转后锁止部配合作用时，所述头枕本体被锁止在翻平位置；
    一复位弹性元件，所述复位弹性元件的一端作用在所述转动齿上，复位弹性元件的另一端作用在所述头枕本体上；所述复位弹性元件迫使所述转动齿上的转动齿部始终与所述定齿上的头枕本体锁止部、头枕本体转动齿部和头枕本体翻转后锁止部之间具有一定的接触压力。
  2. 如权利要求1所述的一种翻转头枕,其特征在于,所述头枕本体转动齿部位于所述头枕本体锁止部和头枕本体翻转后锁止部之间。
  3. 如权利要求1或2所述的一种翻转头枕,其特征在于,所述头枕本体锁止部由一扇形缺口构成，所述扇形缺口由一段凸弧和位于所述凸弧两端的一条第一锁止直边、一条锁止凹弧边围成，其中所述第一锁止直边与所述头枕本体转动齿部邻接，所述第一锁止直边与所述锁止凹弧边围成一第一锁止凹角；所述头枕本体转动齿部由一段凸型圆弧构成，所述凸型圆弧的一端与所述第一锁止直边连接；所述头枕本体翻转后锁止部由一条直形边与所述凸型圆弧的另一端所围成的第二锁止凹角构成；所述转动齿部由一段第一锁止弧、一段滑动配合凹弧、一端第二锁止弧组成，其中第一锁止弧的一端与所述滑动配合凹弧的一端连接，所述第二锁止弧与所述滑动配合凹弧的另一端连接并与所述滑动配合凹弧的另一端围成一锁止凸角；
    所述头枕本体被锁止在使用状态时，所述转动齿部中的锁止凸角插入到所述头枕本体锁止部中的第一锁止凹角中，所述第二锁止弧与所述第一锁止直边锁止接触，所述第一锁止弧与所述锁止凹弧边锁止接触；
    所述转动齿解锁时，所述转动齿部中的锁止凸角逐渐退出所述头枕本体锁止部中的第一锁止凹角直至完全退出，所述第二锁止弧逐渐与所述第一锁止直边逐渐脱离锁止接触直至完 全脱离锁止接触，所述第一锁止弧与所述锁止凹弧边逐渐脱离锁止接触直至完全脱离锁止接触；
    所述头枕本体翻转过程中，所述转动齿上的滑动配合凹弧与所述头枕本体转动齿部中的凸型圆弧滑动接触；
    所述头枕本体完全翻平后，所述转动齿部中的锁止凸角插入到所述头枕本体翻转后锁止部中的第二锁止凹角中，所述转动齿部中的第二锁止弧与所述头枕本体翻转后锁止部中的直形边锁止接触；
    所述头枕本体完全翻平后需要重新回到使用状态时，首先所述转动齿解锁，所述转动齿部中的锁止凸角逐渐退出所述头枕本体翻转后锁止部中的第二锁止凹角直至完全退出，所述转动齿部中的第二锁止弧与所述头枕本体翻转后锁止部中的直形边逐渐脱离锁止接触直至完全脱离锁止接触。
  4. 如权利要求1或2所述的一种翻转头枕,其特征在于,还包括一转轴，所述转轴轴设在所述头枕本体内，所述转动齿固定在所述转轴上。
  5. 如权利要求4所述的一种翻转头枕,其特征在于,还包括一解锁柄，所述解锁柄固定在所述转轴上，所述复位弹性元件为一复位拉簧，所述复位拉簧的一端作用在所述解锁柄上，复位拉簧的另一端作用在所述解锁柄并通过解锁柄和转轴间接作用在所述转动齿上；所述复位拉簧通过解锁柄、转轴带动转动齿转动。
  6. 如权利要求1或2所述的一种翻转头枕,其特征在于,还包括一解锁机构，所述解锁机构带动所述转动齿转动进行解锁。
  7. 如权利要求6所述的一种翻转头枕,其特征在于,所述解锁机构为一解锁拉带，所述解锁拉带的一端与所述转动齿连接，解锁拉带的另一端由所述头枕本体的适当位置伸出，拉动所述解锁拉带即可带动转动齿转动进行解锁。
  8. 如权利要求7所述的一种翻转头枕,其特征在于,所述头枕本体由前半头枕和后半头枕组合而成，在所述后半头枕上开设有一解锁拉带伸出孔，所述解锁拉带由所述解锁拉带伸出孔伸出后半头枕。
PCT/CN2020/078185 2019-04-28 2020-03-06 一种翻转头枕 WO2020220826A1 (zh)

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JP2021562907A JP2022530022A (ja) 2019-04-28 2020-03-06 反転可能なヘッドレスト
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