WO2017197905A1 - 座椅扶手高度调节机构及座椅 - Google Patents

座椅扶手高度调节机构及座椅 Download PDF

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Publication number
WO2017197905A1
WO2017197905A1 PCT/CN2017/000356 CN2017000356W WO2017197905A1 WO 2017197905 A1 WO2017197905 A1 WO 2017197905A1 CN 2017000356 W CN2017000356 W CN 2017000356W WO 2017197905 A1 WO2017197905 A1 WO 2017197905A1
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WO
WIPO (PCT)
Prior art keywords
ratchet
mounting plate
hole
limiting pin
seat
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PCT/CN2017/000356
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English (en)
French (fr)
Inventor
张云琨
张里波
Original Assignee
成都市天龙交通设备有限公司
张云琨
张里波
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Application filed by 成都市天龙交通设备有限公司, 张云琨, 张里波 filed Critical 成都市天龙交通设备有限公司
Priority to DE212017000140.2U priority Critical patent/DE212017000140U1/de
Publication of WO2017197905A1 publication Critical patent/WO2017197905A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/75—Arm-rests
    • B60N2/763—Arm-rests adjustable
    • B60N2/77—Height adjustment
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • A47C1/0305—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by peg-and-notch or pawl-and-ratchet mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D33/00—Seats
    • B61D33/0007—Details; Accessories
    • B61D33/005—Head, arm or footrests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D33/00—Seats
    • B61D33/0057—Seats characterised by their mounting in vehicles
    • B61D33/0078—Seats characterised by their mounting in vehicles adjustably mounted

Definitions

  • the present invention relates to a vehicle appliance, and more particularly to a seat armrest height adjustment mechanism and a seat.
  • One of the objects of the present invention is to provide a seat armrest height adjusting mechanism which is simple in structure and can adjust the armrest height.
  • a seat armrest height adjusting mechanism including a rotating shaft and a rotation adjusting member, the rotation adjusting member being disposed on a rotating shaft, and the rotation adjusting member including a ratchet mechanism.
  • the seat armrest height adjustment mechanism further includes a mounting member and/or a reinforcing member and/or a limiting member, the mounting member being disposed on the rotating shaft.
  • the reinforcing member comprises a spring and a pinning connection shaft
  • the ratchet mechanism is spring and The pinning connection shaft is fixed to the mounting member.
  • the mounting member comprises a first mounting plate and a second mounting plate
  • the ratchet mechanism is located between the first mounting plate and the second mounting plate
  • the first mounting plate is respectively provided with a first mounting plate a through hole and a second through hole of the first mounting plate
  • the second mounting plate is provided with a second mounting plate through hole and a second mounting plate second through hole, the first mounting plate through hole and the second mounting plate through hole
  • the second through hole of the first mounting plate and the second through hole of the second mounting plate are used to fix the pin connecting shaft.
  • the limiting member comprises a cam, a first limiting pin and a second limiting pin.
  • the ratchet mechanism includes a first ratchet, a second ratchet, and a pawl.
  • the first ratchet ring is provided with a first ratchet tooth on the circumference thereof, and the first ratchet first limit pin hole and the first ratchet second limit pin hole are disposed on the ring away from the first ratchet tooth.
  • the first ratchet second limiting pin hole is located obliquely above the first limiting pin hole; the first ratchet first limiting pin hole and the first ratchet second limiting pin hole are respectively used for fixing the first limiting pin and the second a second pinchet tooth is disposed on the circumference of the second ratchet ring, and the second ratchet first limit pin hole and the second ratchet second limit pin hole are disposed on the ring away from the second ratchet tooth,
  • the second ratchet second limit pin hole is located obliquely above the first ratchet pin hole of the second ratchet; the second ratchet first limit pin hole and the second ratchet second limit pin hole are respectively used for fixing the first limit pin and a second limiting pin;
  • the pawl is provided with a locking position matched with the first ratchet and the second ratchet; the pawl is further provided with a spring connecting surface and a pawl through hole, and the spring
  • the cam is an irregular ring
  • the first card position and the second card position are disposed on the cam
  • the first card position is used for the first limit pin of the card position
  • the second card position is used for the second position of the card position.
  • a first positioning plate, a first ratchet, a cam, a second ratchet and a second mounting plate are sequentially fixed on the rotating shaft, and the first limiting pin and the second limiting pin are simultaneously fixed on the first ratchet , the second ratchet, the pawl spring and the pin connection shaft It is fixed to the first mounting plate and the second mounting plate.
  • the first limiting pin and the second limiting pin are round rods with a middle middle and a small end.
  • Another object of the present invention is to provide a seat.
  • the technical solution is: a seat comprising a seat support frame and an armrest mounting bracket, the seat further comprising the above-mentioned seat armrest height adjusting mechanism.
  • the invention has simple structure, can adjust the height of the handrail, realizes the multi-angle and multi-position adjustment function of the handrail, and can simultaneously adjust the two supports, and ensures the consistency of the adjustment height, the operation is simple, reliable, and the use is more convenient.
  • Figure 1 is a schematic view of the overall structure of the present invention
  • Figure 2 is a schematic exploded view of Embodiment 1 of the present invention.
  • Figure 3 is a schematic view showing the overall structure of the rotation adjusting member of the present invention.
  • Figure 4 is a schematic structural view of a first mounting plate of the present invention.
  • Figure 5 is a schematic structural view of a second mounting plate of the present invention.
  • Figure 6 is a schematic view showing the structure of a first ratchet of the present invention.
  • Figure 7 is a schematic view showing the structure of a second ratchet of the present invention.
  • Figure 8 is a schematic view showing the structure of the pawl of the present invention.
  • Figure 9 is a schematic view showing the structure of the cam of the present invention.
  • Figure 10 is a schematic exploded view of Embodiment 3 of the present invention.
  • Figure 11 is a limit diagram of a torsion spring according to Embodiment 3 of the present invention.
  • Figure 12 is a structural view showing a first mounting plate of Embodiment 3 of the present invention.
  • Figure 13 is a structural view showing a second mounting plate of Embodiment 3 of the present invention.
  • Figure 14 is a schematic view showing the structure of a torsion spring according to Embodiment 3 of the present invention.
  • a seat armrest height adjusting mechanism includes a rotating shaft 1 and a rotation adjusting member, and the rotation adjusting member includes a first mounting plate 2, a second mounting plate 9, a first ratchet 12, and a second ratchet 6,
  • the cam 5 the first limit pin 11, the second limit pin 10, the pawl 4, the spring 3, and the pinning connection shaft 8.
  • the first mounting plate 2, the first ratchet 12, the cam 5, the second ratchet 6 and the second mounting plate 9 are sequentially fixed to the rotary shaft 1, and the cam 5 is flexibly rotated.
  • the first limit pin 11 and the second limit pin 10 are simultaneously fixed to the first ratchet 12 and the second ratchet 6 to function as the limit cam 5.
  • the pawl 4 is fixed to the first mounting plate 2 and the second mounting plate 9 by a spring 3 and a pinning coupling shaft 8, ensuring that the pawl 4 is engaged with the first ratchet 12 and the second ratchet 6 under the force of the spring 3.
  • the teeth are naturally occluded to achieve the purpose of adjusting the height of the handrail.
  • the first mounting plate 2 is respectively provided with a first mounting plate first through hole 21 and a first mounting plate second through hole 22, and the second mounting plate 9 is provided with a second mounting plate through hole 91 and a second mounting plate.
  • the connecting shaft 8 is pinned.
  • the first mounting plate 2 and the second mounting plate 9 are square plates.
  • the first ratchet wheel 12 is provided with a first ratchet tooth 121 on the circumference of the ring, and a circle away from the first ratchet tooth 121
  • the first ratchet first limiting pin hole 122 and the first ratchet second limiting pin hole 123 are disposed on the ring, and the first ratchet second limiting pin hole 123 is located obliquely above the first limiting pin hole 122.
  • the first ratchet first limit pin hole 122 and the first ratchet second limit pin hole 123 are used to fix the first limit pin 11 and the second limit pin 10, respectively.
  • the second ratchet wheel 6 is provided with a second ratchet tooth 61 on the circumference of the ring, and the second ratchet first limit pin hole 62 and the second ratchet second limit pin hole 63 are disposed on the ring away from the second ratchet tooth 61.
  • the second ratchet second limiting pin hole 63 is located obliquely above the second ratchet first limiting pin hole 62.
  • the second ratchet first limit pin hole 62 and the second ratchet second limit pin hole 63 are used to fix the first limit pin 11 and the second limit pin 10, respectively.
  • the pawl 4 is provided with a latching position 41 that cooperates with the first ratchet 12 and the second ratchet 6 .
  • the pawl 4 is further provided with a spring connecting surface 42 and a pawl through hole 43 .
  • the spring connecting surface 42 is lower than the engaging portion 42 .
  • the pawl through hole 43 is for passing through the pinning connection shaft 8.
  • the pawl 4 is flat.
  • the cam 5 is an irregular ring, and the cam 5 is provided with a first card 51 and a second card 52.
  • the first card 51 is used for latching the first limit pin 11 and the second card 52 is used for the card position.
  • the first limit pin 11 and the second limit pin 10 are round rods having a thick intermediate portion and small ends.
  • the rotating shaft 1 is mounted on the seat support frame 13 and protrudes outward, and the rotation is flexible and reliable. Both ends of the rotating shaft 1 are connected to the armrest mounting bracket 7, and two rotation adjusting members are symmetrically mounted on the rotating shaft 1 between the seat supporting frame 13 and the armrest mounting bracket 7.
  • the armrest 14 is assembled with the armrest mounting bracket 7.
  • the gear opening and closing position design is adopted to realize the multi-angle and multi-position adjustment function of the handrail, and the two supports can be simultaneously adjusted, and the adjustment height is ensured, and the operation is simple. Reliable and easy to use.
  • a seat armrest height adjusting mechanism is the same as Embodiment 1 except for the following differences.
  • the first mounting plate 2 is respectively provided with a first mounting plate first through hole 21, a first mounting plate second through hole 22 and a first mounting plate third through hole 22.
  • the first mounting plate third through holes 22 are mounted on the four corners of the first mounting plate 2.
  • the second mounting plate 9 is provided with a second mounting plate through hole 91, a second mounting plate second through hole 92, and a second mounting plate third through hole 92.
  • the second mounting plate third through holes 92 are mounted on the four corners of the second mounting plate 9.
  • the seat arm height adjustment mechanism further includes a regulator housing 16 and a circlip pin 15, and the adjuster housing 16 and the second mounting plate 9 are bolted to each other for decoration and protection.
  • the circlip pin 15 is mounted in the corresponding hole of the first mounting plate 2 and the second mounting plate 9, and functions as a spring limit.
  • the spring 3 is a torsion spring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Seats For Vehicles (AREA)

Abstract

一种座椅扶手高度调节机构及座椅，涉及交通领域，所述座椅扶手高度调节机构包括旋转轴（1）和旋转调节构件，该旋转调节构件设置在旋转轴（1）上，旋转调节构件包括棘轮机构。该调节机构结构简单，可以调节扶手高度。

Description

座椅扶手高度调节机构及座椅 技术领域
本发明涉及车用器具，特别涉及一种座椅扶手高度调节机构及座椅。
背景技术
随着我国经济的快速发展，高速铁路事业迎来了新的跨越式的发展，同时，也随着人们经济条件的不断改善，生活水平不断提高，人们对乘坐列车的舒适度的要求也越来越高。现有的列车座椅扶手不能调节高度，不能满足现代出行的需要。
发明内容
本发明的目的之一在于提供一种座椅扶手高度调节机构，该座椅扶手高度调节机构结构简单，可以调节扶手高度。
技术方案是：一种座椅扶手高度调节机构，所述座椅扶手高度调节机构包括旋转轴和旋转调节构件，该旋转调节构件设置在旋转轴上，旋转调节构件包括棘轮机构。
作为优选，所述座椅扶手高度调节机构还包括安装构件和/或加固构件和/或限位构件，该安装构件设置在旋转轴上。
作为优选，所述加固构件包括弹簧和销止连接轴，所述棘轮机构用弹簧和 销止连接轴固定在安装构件上。
作为优选，所述安装构件包括第一安装板和第二安装板，所述棘轮机构位于第一安装板和第二安装板之间；所述第一安装板上分别开有第一安装板第一通孔和第一安装板第二通孔，第二安装板上开有第二安装板通孔和第二安装板第二通孔，第一安装板通孔和第二安装板通孔用于旋转轴穿过，第一安装板第二通孔和第二安装板第二通孔用于固定销止连接轴。
作为优选，所述限位构件包括凸轮、第一限位销和第二限位销。
作为优选，所述棘轮机构包括第一棘轮、第二棘轮和棘爪。
作为优选，所述第一棘轮圆环圆周上设置有第一棘轮齿，远离第一棘轮齿的圆环上设置有第一棘轮第一限位销孔和第一棘轮第二限位销孔，第一棘轮第二限位销孔位于第一限位销孔斜上方；第一棘轮第一限位销孔和第一棘轮第二限位销孔分别用于固定第一限位销和第二限位销；第二棘轮圆环圆周上设置有第二棘轮齿，远离第二棘轮齿的圆环上设置有第二棘轮第一限位销孔和第二棘轮第二限位销孔，第二棘轮第二限位销孔位于第二棘轮第一限位销孔斜上方；第二棘轮第一限位销孔和第二棘轮第二限位销孔分别用于固定第一限位销和第二限位销；棘爪上设置有与第一棘轮和第二棘轮相配合的卡合位，棘爪上还设置有弹簧连接面和棘爪通孔，弹簧连接面低于卡合位，棘爪通孔用于穿过销止连接轴。
作为优选，所述凸轮为不规则圆环，凸轮上设置有第一卡位和第二卡位，第一卡位用于卡位第一限位销，第二卡位用于卡位第二限位销；所述第一安装板、第一棘轮、凸轮、第二棘轮和第二安装板顺次固定在旋转轴上，第一限位销和第二限位销同时固定在第一棘轮、第二棘轮上，棘爪用弹簧和销止连接轴 固定在第一安装板和第二安装板上。
作为优选，所述第一限位销和第二限位销为中间粗、两端小的圆棒。
本发明的目的之二在于提供一种座椅。
技术方案是：一种座椅，包括座椅支撑架和扶手安装支架，该座椅还包括上述的座椅扶手高度调节机构。
与现有技术相比，本发明的有益效果在于：
本发明结构简单，可以调节扶手高度，实现了扶手多角度、多档位调节功能，又能使两支扶能同时调节，且保证了调节高度的一致性，操作简单、可靠，使用更方便。
附图说明
图1是本发明整体结构示意图；
图2是本发明实施例1分解结构示意图；
图3是本发明旋转调节构件整体结构示意图；
图4是本发明第一安装板结构示意图；
图5是本发明第二安装板结构示意图；
图6是本发明第一棘轮结构示意图；
图7是本发明第二棘轮结构示意图；
图8是本发明棘爪结构示意图；
图9是本发明凸轮结构示意图；
图10是本发明实施例3的分解结构示意图；
图11是本发明实施例3扭簧限位图；
图12是本发明实施例3第一安装板结构图；
图13是本发明实施例3第二安装板结构图；
图14是本发明实施例3扭簧结构示意图。
具体实施方式
下面将结合附图对本发明作进一步说明。
实施例1
如图1-14，一种座椅扶手高度调节机构，包括旋转轴1和旋转调节构件，旋转调节构件包括第一安装板2、第二安装板9、第一棘轮12、第二棘轮6、凸轮5、第一限位销11、第二限位销10、棘爪4、弹簧3和销止连接轴8。
第一安装板2、第一棘轮12、凸轮5、第二棘轮6和第二安装板9顺次固定在旋转轴1上，凸轮5转动灵活。第一限位销11和第二限位销10同时固定在第一棘轮12、第二棘轮6上，起到限位凸轮5的作用。棘爪4用弹簧3和销止连接轴8固定在第一安装板2和第二安装板9上，保证棘爪4在弹簧3的作用力下与第一棘轮12和第二棘轮6上的齿进行自然咬合，达到调节扶手不同高度目的。
第一安装板2上分别开有第一安装板第一通孔21和第一安装板第二通孔22，第二安装板9上开有第二安装板通孔91和第二安装板第二通孔92，第一安装板通孔21和第二安装板通孔91用于旋转轴1穿过，第一安装板第二通孔22和第二安装板第二通孔92用于固定销止连接轴8。第一安装板2和第二安装板9为方形板。
第一棘轮12圆环圆周上设置有第一棘轮齿121，远离第一棘轮齿121的圆 环上设置有第一棘轮第一限位销孔122和第一棘轮第二限位销孔123，第一棘轮第二限位销孔123位于第一限位销孔122斜上方。第一棘轮第一限位销孔122和第一棘轮第二限位销孔123分别用于固定第一限位销11和第二限位销10。
第二棘轮6圆环圆周上设置有第二棘轮齿61，远离第二棘轮齿61的圆环上设置有第二棘轮第一限位销孔62和第二棘轮第二限位销孔63，第二棘轮第二限位销孔63位于第二棘轮第一限位销孔62斜上方。第二棘轮第一限位销孔62和第二棘轮第二限位销孔63分别用于固定第一限位销11和第二限位销10。
棘爪4上设置有与第一棘轮12和第二棘轮6相配合的卡合位41，棘爪4上还设置有弹簧连接面42和棘爪通孔43，弹簧连接面42低于卡合位41，棘爪通孔43用于穿过销止连接轴8。棘爪4为扁平状。
凸轮5为不规则圆环，凸轮5上设置有第一卡位51和第二卡位52，第一卡位51用于卡位第一限位销11，第二卡位52用于卡位第二限位销10。
第一限位销11和第二限位销10为中间粗、两端小的圆棒。
实施例2
旋转轴1安装在座椅支撑架13上并向外伸出，旋转灵活可靠。旋转轴1两端与扶手安装支架7相连，旋转调节构件有两个，对称安装在旋转轴1上，位于座椅支撑架13与扶手安装支架7之间。扶手14与扶手安装支架7进行装配。
需要调节扶手高度时，只需用手扣住扶手14中的扶手扣槽15向后，带动旋转轴1、第一棘轮12和第二棘轮6同时向后旋转，此时棘爪4在弹簧3的弹簧作用力下自然地与第一棘轮12和第二棘轮6的每节齿上依次进行卡位，同时凸轮5也会旋转，当凸轮5与第二限位销10接触时，扶手就无法再向后旋 转，以防止扶手角度调节过大与其它物体相撞，此时凸轮5处于无法旋转状态，并且顶住棘爪4，使棘爪4与第一棘轮12和第二棘轮6的齿不被咬合；再用力将扶手调回时，棘爪4通过凸轮5向前旋转，自动回位到初始位置，同时凸轮5旋转到与第一限位销11接触时，凸轮5无法向前旋转，防止扶手再继续下向调节。这样在无调节开关装置的作用下利用齿轮开合卡位设计，实现扶手多角度、多档位调节功能，又能使两支扶能同时调节，且保证了调节高度的一致性，操作简单、可靠，使用更方便。
实施例3
一种座椅扶手高度调节机构，除以下不同外，其余与实施例1相同。
第一安装板2上分别开有第一安装板第一通孔21、第一安装板第二通孔22和第一安装板第三通孔22。第一安装板第三通孔22安装在第一安装板2四角上。第二安装板9上开有第二安装板通孔91、第二安装板第二通孔92和第二安装板第三通孔92。第二安装板第三通孔92安装在第二安装板9四角上。
该座椅扶手高度调节机构还包括调节器外壳16和卡簧销轴15，调节器外壳16与第二安装板9用螺栓相连接，起装饰，保护作用。
卡簧销轴15安装在第一安装板2、第二安装板9相对应的孔内，起弹簧限位的作用。
弹簧3为扭簧。

Claims (10)

  1. 一种座椅扶手高度调节机构，其特征在于：所述座椅扶手高度调节机构包括旋转轴和旋转调节构件，该旋转调节构件设置在旋转轴上，旋转调节构件包括棘轮机构。
  2. 根据权利要求1所述的座椅扶手高度调节机构，其特征在于：所述座椅扶手高度调节机构还包括安装构件和/或加固构件和/或限位构件，该安装构件设置在旋转轴上。
  3. 根据权利要求2所述的座椅扶手高度调节机构，其特征在于：所述加固构件包括弹簧和销止连接轴，所述棘轮机构用弹簧和销止连接轴固定在安装构件上。
  4. 根据权利要求3所述的座椅扶手高度调节机构，其特征在于：所述安装构件包括第一安装板和第二安装板，所述棘轮机构位于第一安装板和第二安装板之间；所述第一安装板上分别开有第一安装板第一通孔和第一安装板第二通孔，第二安装板上开有第二安装板通孔和第二安装板第二通孔，第一安装板通孔和第二安装板通孔用于旋转轴穿过，第一安装板第二通孔和第二安装板第二通孔用于固定销止连接轴。
  5. 根据权利要求4所述的座椅扶手高度调节机构，其特征在于：所述限位构件包括凸轮、第一限位销和第二限位销。
  6. 根据权利要求5所述的座椅扶手高度调节机构，其特征在于：所述棘轮机构包括第一棘轮、第二棘轮和棘爪。
  7. 根据权利要求6所述的座椅扶手高度调节机构，其特征在于：所述第一棘轮圆环圆周上设置有第一棘轮齿，远离第一棘轮齿的圆环上设置有第一棘轮 第一限位销孔和第一棘轮第二限位销孔，第一棘轮第二限位销孔位于第一限位销孔斜上方；第一棘轮第一限位销孔和第一棘轮第二限位销孔分别用于固定第一限位销和第二限位销；第二棘轮圆环圆周上设置有第二棘轮齿，远离第二棘轮齿的圆环上设置有第二棘轮第一限位销孔和第二棘轮第二限位销孔，第二棘轮第二限位销孔位于第二棘轮第一限位销孔斜上方；第二棘轮第一限位销孔和第二棘轮第二限位销孔分别用于固定第一限位销和第二限位销；棘爪上设置有与第一棘轮和第二棘轮相配合的卡合位，棘爪上还设置有弹簧连接面和棘爪通孔，弹簧连接面低于卡合位，棘爪通孔用于穿过销止连接轴。
  8. 根据权利要求7所述的座椅扶手高度调节机构，其特征在于：所述凸轮为不规则圆环，凸轮上设置有第一卡位和第二卡位，第一卡位用于卡位第一限位销，第二卡位用于卡位第二限位销；所述第一安装板、第一棘轮、凸轮、第二棘轮和第二安装板顺次固定在旋转轴上，第一限位销和第二限位销同时固定在第一棘轮、第二棘轮上，棘爪用弹簧和销止连接轴固定在第一安装板和第二安装板上。
  9. 根据权利要求8所述的座椅扶手高度调节机构，其特征在于：所述第一限位销和第二限位销为中间粗、两端小的圆棒；所述座椅扶手高度调节机构还包括卡簧销轴。
  10. 一种座椅，包括座椅支撑架和扶手安装支架，其特征在于：该座椅还包括权利要求1-9任一权利要求所述的座椅扶手高度调节机构。
PCT/CN2017/000356 2016-05-17 2017-05-16 座椅扶手高度调节机构及座椅 WO2017197905A1 (zh)

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