WO2023130738A1 - 一种头枕结构 - Google Patents

一种头枕结构 Download PDF

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Publication number
WO2023130738A1
WO2023130738A1 PCT/CN2022/114367 CN2022114367W WO2023130738A1 WO 2023130738 A1 WO2023130738 A1 WO 2023130738A1 CN 2022114367 W CN2022114367 W CN 2022114367W WO 2023130738 A1 WO2023130738 A1 WO 2023130738A1
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WO
WIPO (PCT)
Prior art keywords
headrest
rear cover
gear
nut
rack
Prior art date
Application number
PCT/CN2022/114367
Other languages
English (en)
French (fr)
Inventor
张新泽
沈毅能
张晓萃
甘坤家
Original Assignee
延锋国际汽车技术有限公司
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 延锋国际汽车技术有限公司 filed Critical 延锋国际汽车技术有限公司
Priority to US18/721,262 priority Critical patent/US20240351494A1/en
Priority to EP22918193.8A priority patent/EP4464552A1/en
Publication of WO2023130738A1 publication Critical patent/WO2023130738A1/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
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/829—Head-rests movable or adjustable vertically slidable characterised by their adjusting mechanisms, e.g. electric motors
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
    • B60N2/821—Head-rests movable or adjustable vertically slidable characterised by their locking devices with continuous positioning
    • 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
    • B60N2/853—Tiltable characterised by their adjusting mechanisms, e.g. electric motors
    • 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
    • B60N2/865—Head-rests movable or adjustable providing a fore-and-aft movement with respect to the occupant's head

Definitions

  • the invention relates to the field of car seats, in particular to a headrest structure.
  • the Chinese utility model patent application number 202121661847.6 discloses a zero-gravity seat headrest, including: a fixed base installed on the seat through a headrest support rod, a headrest and a headrest motor, which is characterized in that , the headrest motor drives the headrest to move relative to the fixed base through a compound motion mechanism composed of a screw nut mechanism and a rack and pinion mechanism.
  • This patent adopts a slider mechanism as a transmission medium, and drives the front cover of the headrest to move through a motor arranged on the back cover of the headrest.
  • the structure of the compound motion mechanism is relatively complicated, and the three mechanisms (screw and nut mechanism, rack and pinion mechanism, and slider mechanism) are not rigidly connected, and these three mechanisms occupy a large amount of headrest layout. space, resulting in a thinner comfort layer of the headrest, affecting the ride experience.
  • the purpose of the present invention is to provide an integrated headrest structure with simple structure and strong riding comfort for the problems of complex structure of the headrest of the existing zero-gravity seat and the problem of affecting the riding experience.
  • a headrest structure including a headrest driving seat fixed on a seat back, a screw motor, a gear mechanism, a transmission rack and a headrest;
  • the headrest structure also includes a headrest rear cover arranged on the rear side of the headrest, and a rear cover rack is arranged on the headrest rear cover;
  • the gear mechanism is engaged between the rear cover rack and the transmission rack;
  • the screw motor drives the gear mechanism to move based on the principle of a screw transmission mechanism, and then drives the headrest part to move relative to the headrest driving seat.
  • the gear mechanism is composed of a nut mechanism, a bushing, a gear shaft and a gear;
  • the gear shaft is passed through the sleeve, and the gears are respectively arranged at both ends of the gear shaft;
  • the screw motor is fixed on the headrest driving seat, and the screw motor drives the gear mechanism to move through the nut mechanism, so that all the gears engaged between the back cover rack and the transmission rack The gear rotates to drive the headrest rear cover to move.
  • the screw motor is fixed above the driving seat through a bolt passing through the driving seat and a flat washer from below, the bolt is a stepped bolt, and the flat washer The material is rubber.
  • the fixed structure superimposed by bolts and flat washers can reduce the vibration of the screw motor during operation and reduce its working noise.
  • the transmission rack is arranged on a transmission part, and the transmission part is also provided with a nut mechanism accommodating cavity, and the nut mechanism is slidably arranged in the nut mechanism accommodating cavity , the moving track of the nut mechanism is limited by the nut mechanism accommodating cavity.
  • At least one rear cover rib is provided on the rear cover of the headrest, and at least one transmission part groove is provided on the transmission part, and the rear cover rib and the The grooves of the transmission part cooperate with each other to form a chute structure, and when the screw motor drives the headrest rear cover to move through the gear mechanism, the chute structure provides a guide for the movement of the headrest.
  • the headrest structure further includes a receiving groove provided on the side of the rib of the rear cover, and an ambient light is embedded in the receiving groove.
  • a nut lug is provided on the side of the nut mechanism, a nut groove is arranged in the accommodating chamber of the nut mechanism, and the nut lug is placed in the nut groove, so that The nut mechanism can only move vertically and cannot rotate vertically during being driven by the screw motor.
  • a limit ring is also provided on the gear shaft, and the limit ring limits the installation position of the gear and the gear shaft to prevent the gear, the gear shaft and the bush from Failure due to assembly misalignment.
  • a headrest comfort layer is provided on the front side of the headrest part, and the headrest comfort layer is fixed on the headrest rear cover by fasteners.
  • a covering shell is arranged on the outside of the driving seat of the headrest.
  • the beneficial effect of the present invention is that: the headrest structure provided by the present invention adopts rigid connection and fixation between the transmission part provided with the transmission rack and the headrest driving seat provided with the screw motor, and the rear cover rack is arranged behind the headrest.
  • the rear surface of the cover plate not only achieves the effect of strengthening the overall structural strength of the headrest, but also frees up more layout space for the comfort layer, and at the same time provides consumption through the external rear cover rack and rear cover ribs. Or a new, light sensory experience.
  • Fig. 1 is a front side view of the product of the present invention.
  • Fig. 2 is a rear side view of the product of the present invention.
  • Fig. 3 is a product explosion diagram 1 of the present invention.
  • Fig. 4 is a product explosion diagram II of the present invention.
  • Fig. 5 is an exploded view of the gear mechanism of the present invention.
  • Fig. 6 is an overall structural diagram of the gear mechanism of the present invention.
  • Fig. 7 is a structural diagram of the transmission part of the present invention.
  • Fig. 8 is a top view of the transmission part of the present invention.
  • Fig. 9 is a schematic diagram of the assembly of the gear mechanism and the transmission part of the present invention.
  • Fig. 10 is a structural schematic view of the headrest rear cover and the transmission part of the present invention.
  • Fig. 11 is a schematic diagram of matching of the headrest rear cover and the transmission part of the present invention.
  • Fig. 12 is a structural schematic diagram of the receiving groove and the ambient light on the rear cover of the headrest of the present invention.
  • Fig. 13 is a first assembly schematic diagram of the headrest rear cover and the transmission part of the present invention.
  • Fig. 14 is the second assembly schematic diagram of the headrest rear cover and the transmission part of the present invention.
  • Fig. 15 is a first assembly schematic diagram of the screw motor and the headrest driving seat of the present invention.
  • Fig. 16 is a second schematic diagram of the assembly of the screw motor and the driving seat of the headrest of the present invention.
  • Fig. 17 is a schematic diagram of the assembly of the transmission part and the driving seat of the headrest of the present invention.
  • Fig. 18 is an assembly diagram of the transmission part, the headrest driving seat and the covering shell of the present invention.
  • Fig. 19 is a schematic diagram of the headrest part of the present invention located at the highest point of the headrest driving part.
  • Fig. 20 is a schematic diagram of the headrest part of the present invention located at the midpoint of the headrest driving part.
  • Fig. 21 is a schematic diagram of the headrest part of the present invention located at the lowest point of the headrest driving part.
  • Fig. 22 is a schematic diagram of the relationship between the gear, the transmission rack and the rear cover rack when the headrest part of the present invention moves relative to the headrest driving part.
  • Fig. 23 is a schematic diagram of the foam thickness in the comfort layer of the present invention.
  • orientation or positional relationship indicated by the terms “upper”, “lower”, “left”, “right”, “inner” and “outer” are based on the Orientation or positional relationship, longitudinal (X-direction), “lateral (Y-direction)” and “vertical (Z-direction)” are the terms of the spatial coordinate system in the automotive field, which are professional terms well known to those skilled in the art.
  • the above terms are used for the convenience of describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
  • the integrated headrest structure of the present invention mainly includes a driving part 30 installed on the backrest of a car seat and a headrest part 10 assembled in front of the driving part 30 .
  • the driving part 30 can be divided into a transmission part 300 , a headrest driving seat 400 and a covering shell 500 from front to rear along the longitudinal axis.
  • the headrest part 10 is assembled from a headrest comfort layer 100 and a headrest rear cover 200 .
  • a gear mechanism 330 is arranged in the transmission part 300 , and the gear mechanism 330 is composed of a nut, a nut mechanism 334 , a bushing 337 , a gear shaft 332 and a pair of gears 331 .
  • the center position of the nut mechanism 334 is provided with a nut hole 335 along the Z direction, and a pair of outwardly protruding nut lugs 336 are respectively provided at the flank positions of the nut mechanism 334 along the Y direction, and the X front side of the nut mechanism 334 is provided with Shaft sleeve 337.
  • the gear shaft 332 is passed through the sleeve 337 from one side, and a gear 331 is respectively arranged on two ends of the gear shaft 332 .
  • a limit ring 333 is also provided on the gear shaft 332.
  • the limit ring 333 is used to limit the position of the gear shaft 332 relative to the sleeve 337, so as to prevent the gear shaft 332 from deviating from the designed position relative to the sleeve 337 during assembly.
  • Two ends of the gear shaft 332 are also provided with another pair of limiting rings for respectively limiting the pair of gears 331 . These limit rings can limit the installation position of the gear and the gear shaft, so as to prevent the gear, the gear shaft and the shaft sleeve from failing due to assembly misalignment.
  • a nut mechanism accommodating chamber 310 is provided at the center of the transmission part 300 along the Z-axis direction.
  • a pair of nut slots 311 are respectively provided at the flanks of the nut mechanism accommodation cavity 310 , and the nut mechanism accommodation cavity 310 and the nut slots 311 are arranged laterally along the Y-axis direction.
  • the spatial shape of the nut mechanism accommodating chamber 310 and the nut groove 311 is similar to that of the nut hole 335 and the nut lug 336, so that the nut mechanism 334 can move vertically downward from above into the nut mechanism accommodating chamber 310, and be placed in the nut mechanism accommodating chamber 310.
  • a pair of transmission racks 320 is disposed on the transmission part 300 .
  • the transmission racks 320 are respectively arranged on two sides of the nut mechanism accommodating chamber 310 , one on the left and one on the right.
  • a pair of rear cover racks 220 are disposed on the rear surface of the headrest rear cover 200 .
  • Both sides of the rear surface of the headrest rear cover 200 are also provided with rear cover ribs 210 arranged along the Z direction, and the number of rear cover ribs 210 on each side is 2, totaling 4.
  • Both sides of the front end of the transmission part 300 are similarly provided with transmission part grooves 340 arranged along the Z direction.
  • the profiles of the ribs 210 of the rear cover and the grooves 340 of the transmission part are matched with each other, and cooperate together to form a slide groove structure.
  • a receiving groove 211 is formed at the side of the rear cover rib 210 .
  • An ambient light strip 230 is arranged in the receiving groove 211 .
  • the transmission part 300 when the transmission part 300 is assembled with the headrest rear cover 200 , the headrest rear cover 200 is inserted into the transmission part 300 from top to bottom. Wherein the rear cover rib 210 on the headrest rear cover 200 is embedded in the groove 340 of the transmission part, so that the movement of the headrest rear cover 200 is limited after assembly, and can only move along the Z direction relative to the transmission part 300 (subject to limited by the above chute structure).
  • the gear 331 is meshed with the front rear rear cover rack 220 and the rear transmission rack 320 .
  • the output end of the screw motor 410 is provided with a screw 414 extending outward.
  • the screw motor 410 is fixed above the drive base 400 through a bolt 412 passing through the drive base 400 and a flat washer 413 from below.
  • the threaded rod 414 extends from top to bottom along the Z direction.
  • the bolt 412 is a stepped bolt, and the material of the flat washer 413 is rubber. The superimposed fixing structure of the bolt 412 and the flat washer 413 can reduce the vibration of the screw motor 410 during operation and reduce its working noise.
  • the headrest driving seat 400 is assembled at the rear of the transmission part 300, and the screw 414 passes through the nut hole 335 from above so that the screw motor 410 engages with the nut mechanism 334, thereby driving the nut mechanism 334 along the Z direction. Move in the nut mechanism accommodating chamber 310 . Finally, the covering shell 500 is assembled on the outermost layer of the headrest driving seat 400 and the transmission part 300 to reflect the A-side design of the driving part 30 .
  • the screw motor 410 in the driving part 30 drives the gear mechanism 330 to move along the Z direction based on the transmission rack 320 in the driving part based on the principle of the screw drive mechanism.
  • the gear mechanism 330 moves upward, the gear 331 pushes the rear cover rack 220 to move the headrest 10 upward synchronously; when the gear mechanism 330 moves downward, the rear cover rack 220 is pushed to move downward synchronously.
  • the stroke of the headrest 10 is 2L
  • the adjustment stroke of the headrest part 10 is enlarged.
  • the technical problem to be solved by the present invention is mainly to rigidly connect the transmission part 300 provided with the transmission rack 320 with the headrest driving seat 400 provided with the screw motor 410, which changes the earlier connection through the slider.
  • the transition structure improves the connection strength between the parts. This reduces the probability of failure of the head restraint structure when the car is impacted.
  • the rear cover rack 220 is arranged on the A surface (i.e.: the rear surface) of the headrest rear cover plate 200, so that the driving parts 30 and other moving mechanisms do not occupy the internal space of the headrest part 10, so that the headrest comfort layer 100 can obtain Larger layout space can increase the thickness Z of the headrest foam, thereby improving the comfort performance of the headrest.
  • the exposed structure of the ribs 210 of the rear cover and the rack 220 of the rear cover also gives the occupants a new, thinner and more distinctive experience.

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

Abstract

一种头枕结构，包括固定在座椅靠背上的头枕驱动座（400）、丝杆电机（410）、齿轮机构（330）、传动齿条（320）和头枕部（10）。头枕结构还包括设置在头枕部（10）后侧的头枕后盖板（200），头枕后盖板（200）上设置有后盖齿条（220）；齿轮机构（330）啮合在后盖齿条（220）与传动齿条（320）之间；丝杆电机（410）以丝杆传动机构的原理驱动齿轮机构（330）运动，进而带动头枕部（10）相对于头枕驱动座（400）移动。

Description

一种头枕结构 技术领域
本发明涉及汽车座椅领域，特别涉及一种头枕结构。
背景技术
随着汽车行业发展和汽车市场的变化，为了提高用户体验，对汽车座椅提出了更多、更高、更舒适性的需求，以能够在满足头枕大行程调节的同时体现座椅的精致造型及外观。
为此，申请号为202121661847.6的中国实用新型专利公开了一种零重力座椅头枕，包含：通过头枕支撑杆安装在座椅上的固定基座、头枕和头枕电机，其特征在于，所述头枕电机通过丝杆螺母机构和齿轮齿条机构所构成的复合运动机构驱动所述头枕相对所述固定基座运动。该专利采用一滑块机构作为传动中介，通过设置在头枕后盖上的电机驱动头枕前盖运动。该复合运动机构的结构较为复杂，其所包含的3个机构(丝杆螺母机构、齿轮齿条机构和滑块机构)之间都不是刚性连接，且这3个机构占用了大量的头枕布置空间，导致头枕的舒适层较薄，影响乘坐体验。
发明内容
本发明的目的在于针对现有零重力座椅头枕结构复杂和影响乘坐体验的问题而提供一种结构简单、乘坐舒适感强的一体式头枕结构。
为了实现上述目的，本发明所采用的技术方案是：
一种头枕结构，包括固定在座椅靠背上的头枕驱动座、丝杆电机、齿轮机构、传动齿条和头枕部；
所述头枕结构还包括设置在所述头枕部后侧的头枕后盖板，所述头枕后盖板上设置有后盖齿条；
所述齿轮机构啮合在所述后盖齿条与所述传动齿条之间；
所述丝杆电机以丝杆传动机构的原理驱动所述齿轮机构运动，进而带动所述头枕部相对于所述头枕驱动座移动。
在本发明的一个优选实施例中，所述齿轮机构由螺母机构、轴套、齿轮轴和齿轮组成；
所述齿轮轴穿设在所述轴套中，所述齿轮分别设置在齿轮轴的两端；
所述丝杆电机固定在所述头枕驱动座上，丝杆电机通过所述螺母机构驱动所述齿轮机构运动，进而使啮合在所述后盖齿条和所述传动齿条之间的所述齿轮转动，以驱动所述头枕后盖板移动。
在本发明的一个优选实施例中，所述丝杆电机通过一螺栓从下方穿过所述驱动座和一平垫片固定在驱动座的上方，所述螺栓为台阶螺栓，所述平垫片的材质为橡胶。通过螺栓与平垫片叠加的固定结构能减小丝杆电机运转时的震动，并降低其工作噪音。
在本发明的一个优选实施例中，所述传动齿条设置在一传动部上，所述传动部上还设置有一螺母机构容纳腔，所述螺母机构滑动地设置在所述螺母机构容纳腔中，所述螺母机构的移动轨迹被螺母机构容纳腔所限制。
在本发明的一个优选实施例中，所述头枕后盖板上设置有至少一后盖凸棱，所述传动部上设置有至少一传动部凹槽，所述后盖凸棱与所述传动部凹槽相互配合形成滑槽结构，当所述丝杆电机通过所述齿轮机构驱动头枕后盖板移动时，所述滑槽结构为所述头枕部的移动提供导向。
在本发明的一个优选实施例中，所述头枕结构还包括设置在所述后盖凸棱的侧部的容纳槽，所述容纳槽内嵌装有氛围灯。
在本发明的一个优选实施例中，所述螺母机构的侧部设置有螺母凸耳，所述螺母机构容纳腔内设置有螺母槽，所述螺母凸耳置于所述螺母槽中，进而使所述螺母机构在受所述丝杆电机驱动过程中只能沿垂向移动而不能绕垂向旋转。
在本发明的一个优选实施例中，所述齿轮轴上还设置有限位环，所述限位环对所述齿轮与齿轮轴的安装位置进行限定，以防止齿轮、齿轮轴和所述轴套之间因装配错位而失效。
在本发明的一个优选实施例中，所述头枕部的前侧设置有头枕舒适层，所述头枕舒适层通过紧固件固定在所述头枕后盖板上。
在本发明的一个优选实施例中，所述头枕驱动座的外部设置有包覆壳罩。
本发明的有益效果在于：本发明所提供的头枕结构将设置有传动齿条的传动部与设置有丝杆电机的头枕驱动座采用刚性连接固定，将后盖齿条布置在头枕后盖板的后表面，不仅达到了头枕整体结构强度得到强化的效果，而且在腾挪了更多的布置空间给舒适层的同时还通过外置式的后盖齿条和后盖凸棱给到消费者一种全新的、轻薄的 感官体验。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1是本发明的产品前侧视图。
图2是本发明的产品后侧视图。
图3是本发明的产品爆炸图一。
图4是本发明的产品爆炸图二。
图5是本发明的齿轮机构爆炸图。
图6是本发明的齿轮机构整体结构图。
图7是本发明的传动部结构图。
图8是本发明的传动部俯视图。
图9是本发明的齿轮机构与传动部的装配示意图。
图10是本发明的头枕后盖板与传动部的结构示意图。
图11是本发明的头枕后盖板与传动部的匹配示意图。
图12是本发明的头枕后盖板上的容纳槽和氛围灯的结构示意图。
图13是本发明的头枕后盖板与传动部的装配示意图一。
图14是本发明的头枕后盖板与传动部的装配示意图二。
图15是本发明的丝杆电机与头枕驱动座的装配示意图一。
图16是本发明的丝杆电机与头枕驱动座的装配示意图二。
图17是本发明的传动部与头枕驱动座的装配示意图。
图18是本发明的传动部、头枕驱动座与包覆壳罩的装配图。
图19是本发明的头枕部位于头枕驱动部最高点的示意图。
图20是本发明的头枕部位于头枕驱动部中点的示意图。
图21是本发明的头枕部位于头枕驱动部最低点的示意图。
图22是本发明的头枕部相对于头枕驱动部运动时，齿轮、传动齿条和后盖齿条的关系示意图。
图23是本发明的舒适层内的发泡厚度示意图。
具体实施方式
在本发明的描述中，需要说明的是，术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，纵向(X向)”、“侧向(Y向)”、“垂向(Z向)”为汽车领域的空间坐标系术语，其为本技术领域人员所熟知的专业术语。以上术语均是为了便于描述本发明，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
以下结合附图和具体实施方式对本发明的详细结构作进一步描述。
参考图1至图4，本发明的一体式头枕结构主要包括安装在汽车座椅靠背上的驱动部30和装配在驱动部30前方的头枕部10。驱动部30沿纵轴从前向后可以拆分为传动部300、头枕驱动座400和包覆壳罩500。头枕部10则由头枕舒适层100和头枕后盖板200装配而成。
参考图5和图6，传动部300内设置有一齿轮机构330，齿轮机构330由螺母、螺母机构334、轴套337、齿轮轴332和一对齿轮331组成。螺母机构334的中心位置设置有一沿Z向的螺母孔335，螺母机构334的沿Y向的侧翼位置分别设置有一对向外凸出的螺母凸耳336，螺母机构334的X向前侧设置有轴套337。齿轮轴332从一侧穿设在轴套337中，齿轮轴332的两端各设置有一个齿轮331。齿轮轴332上还设置有一限位环333，限位环333用于限制齿轮轴332相对于轴套337的位置，避免装配时齿轮轴332相对于轴套337偏离设计位置。齿轮轴332的两端还设置有分别用于对一对齿轮331进行限位的另外一对限位环。这些限位环可以对齿轮与齿轮轴的安装位置进行限定，以防止齿轮、齿轮轴和轴套之间因装配错位而失效。
参考图7和图8，传动部300的中心位置沿Z轴方向设置有一螺母机构容纳腔310。螺母机构容纳腔310的侧翼位置也分别设置有一对螺母槽311，螺母机构容纳腔310和螺母槽311是沿Y轴方向侧向排布的。螺母机构容纳腔310和螺母槽311的空间造型与螺母孔335和螺母凸耳336相仿，使得螺母机构334可以从上方垂直向下运动进入螺母机构容纳腔310内，并在螺母机构容纳腔310内移动，其移动过程中被上述各结构所限制只能沿Z向移动。一对传动齿条320设置在传动部300上。传动齿条320分别一左、一右地设置在螺母机构容纳腔310的两侧。
参考图9，当螺母机构330沿箭头方向向下装入螺母机构容纳腔310时，其一对齿轮331分别与相应的传动齿条320相啮合，当螺母机构330沿Z向在螺母机构容纳腔310内移动时，齿轮331在传动齿条320上运动，在运动过程中两侧齿轮331的Y 向是同轴的，Z向位置度是相等的。
参考图10至图12，头枕后盖板200的后表面上设置有一对后盖齿条220。头枕后盖板200的后表面两侧还都设置有沿Z向排布的后盖凸棱210，每侧的后盖凸棱210的数量为2根，合计共4根。传动部300的前端两侧也同样的设置有沿Z向排布的传动部凹槽340。后盖凸棱210和传动部凹槽340的型面是相互匹配的，共同配合构成滑槽结构。当后盖凸棱210与传动部凹槽340相互滑配后，期间形成一位于后盖凸棱210侧部的容纳槽211。一氛围灯带230布置在该容纳槽211内。
参考图13和图14，传动部300与头枕后盖板200装配时，头枕后盖板200从上方向下插入传动部300中。其中头枕后盖板200上的后盖凸棱210嵌入至传动部凹槽340中，使得装配后头枕后盖板200的移动被限位，只能相对于传动部300沿Z向移动(受上述滑槽结构所限制)。当传动部300与头枕后盖板200装配完毕后，齿轮331完成与前侧后盖齿条220和后侧传动齿条320的啮合。
参考图15和图16，丝杆电机410的输出端向外延伸设置有一丝杆414。丝杆电机410通过一螺栓412从下方穿过驱动座400和一平垫片413固定在驱动座400的上方。丝杆414沿Z向从上向下延伸。螺栓412为台阶螺栓，平垫片413的材质为橡胶。通过螺栓412与平垫片413叠加的固定结构能减小丝杆电机410运转时的震动，并降低其工作噪音。
参考图17和图18，头枕驱动座400装配在传动部300的后方，丝杆414从上方穿过螺母孔335使得丝杆电机410与螺母机构334相啮合，从而驱动螺母机构334沿Z向在螺母机构容纳腔310内移动。最后将包覆壳罩500装配在头枕驱动座400和传动部300的最外层，体现驱动部30的A面造型设计。
参考图19至图21，头枕工作时，驱动部30内的丝杆电机410以丝杆传动机构的原理驱动齿轮机构330以驱动部内的传动齿条320为基准沿Z向移动。当齿轮机构330向上移动时，通过齿轮331推动后盖齿条220进而使头枕部10同步向上移动，当齿轮机构330向下移动时，则推动后盖齿条220同步向下移动。
结合参考图22，头枕部10的行程为2L，传动齿条320长度＝后盖齿条220长度＝L+齿轮331的直径，通过齿轮331、传动齿条320和后盖齿条220的复合结构，放大了头枕部10的调节行程。
参考图23，本发明要解决的技术问题主要在于，将设置有传动齿条320的传动部300与设置有丝杆电机410的头枕驱动座400刚性连接，改变了早前通过滑块连接的 过渡结构，使得各零件之间的连接强度提高。当汽车受到冲击时，这可以降低头枕结构的失效概率。同时，将后盖齿条220布置在头枕后盖板200的A面(即：后表面)，使得驱动部30等运动机构不占用头枕部10的内部空间，让头枕舒适层100获得更大的布置空间以加大头枕发泡的厚度Z，从而提升了头枕的舒适性能。同时，后盖凸棱210和后盖齿条220的外露结构也给到乘员一种全新的、轻薄的和更有特色的体验。

Claims (10)

  1. 一种头枕结构，包括固定在座椅靠背上的头枕驱动座、丝杆电机、齿轮机构、传动齿条和头枕部，其特征在于，
    所述头枕结构还包括设置在所述头枕部后侧的头枕后盖板，所述头枕后盖板上设置有后盖齿条；
    所述齿轮机构啮合在所述后盖齿条与所述传动齿条之间；
    所述丝杆电机以丝杆传动机构的原理驱动所述齿轮机构运动，进而带动所述头枕部相对于所述头枕驱动座移动。
  2. 如权利要求1所述的头枕结构，其特征在于，所述齿轮机构由螺母机构、轴套、齿轮轴和齿轮组成；
    所述齿轮轴穿设在所述轴套中，所述齿轮分别设置在齿轮轴的两端；
    所述丝杆电机固定在所述头枕驱动座上，丝杆电机通过所述螺母机构驱动所述齿轮机构运动，进而使啮合在所述后盖齿条和所述传动齿条之间的所述齿轮转动，以驱动所述头枕后盖板移动。
  3. 如权利要求2所述的头枕结构，其特征在于，所述丝杆电机通过一螺栓从下方穿过所述驱动座和一平垫片固定在驱动座的上方，所述螺栓为台阶螺栓，所述平垫片的材质为橡胶。
  4. 如权利要求3所述的头枕结构，其特征在于，所述传动齿条设置在一传动部上，所述传动部上还设置有一螺母机构容纳腔，所述螺母机构滑动地设置在所述螺母机构容纳腔中，螺母机构的移动轨迹被螺母机构容纳腔所限制。
  5. 如权利要求4所述的头枕结构，其特征在于，所述头枕后盖板上设置有至少一后盖凸棱，所述传动部上设置有至少一传动部凹槽，所述后盖凸棱与所述传动部凹槽相互配合形成滑槽结构，当所述丝杆电机通过所述齿轮机构驱动头枕后盖板移动时，所述滑槽结构为所述头枕部的移动提供导向。
  6. 如权利要求5所述的头枕结构，其特征在于，所述头枕结构还包括设置在所述后盖凸棱的侧部的容纳槽，所述容纳槽内嵌装有氛围灯。
  7. 如权利要求4所述的头枕结构，其特征在于，所述螺母机构的侧部设置有螺母凸耳，所述螺母机构容纳腔内设置有螺母槽，所述螺母凸耳置于所述螺母槽中，进而使所述螺母机构在受所述丝杆电机驱动过程中只能沿垂向移动而不能绕垂向旋转。
  8. 如权利要求2所述的头枕结构，其特征在于，所述齿轮轴上还设置有限位环，所述限位环对所述齿轮与齿轮轴的安装位置进行限定，以防止齿轮、齿轮轴和所述轴套之间因装配错位而失效。
  9. 如权利要求1至8任一项权利要求所述的头枕结构，其特征在于，所述头枕部的前侧设置有头枕舒适层，所述头枕舒适层通过紧固件固定在所述头枕后盖板上。
  10. 如权利要求9所述的头枕结构，其特征在于，所述头枕驱动座的外部设置有包覆壳罩。
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