WO2020164326A1 - 用于车辆座椅的转动装置 - Google Patents

用于车辆座椅的转动装置 Download PDF

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Publication number
WO2020164326A1
WO2020164326A1 PCT/CN2019/130592 CN2019130592W WO2020164326A1 WO 2020164326 A1 WO2020164326 A1 WO 2020164326A1 CN 2019130592 W CN2019130592 W CN 2019130592W WO 2020164326 A1 WO2020164326 A1 WO 2020164326A1
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Prior art keywords
rotating device
vehicle seat
plate
seat according
ball
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PCT/CN2019/130592
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English (en)
French (fr)
Inventor
封庆伟
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上海延锋座椅有限公司
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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 EP19914985.7A priority Critical patent/EP3925822A4/en
Priority to US17/310,630 priority patent/US11701986B2/en
Publication of WO2020164326A1 publication Critical patent/WO2020164326A1/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
    • B60N2/02—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
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/14—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access

Definitions

  • the present invention relates to the technical field of automobile seats, in particular to a rotating device used for vehicle seats.
  • the rotating devices currently used for car seats to rotate around a vertical axis are classified into two types: rolling rotating devices and sliding rotating devices according to different rotating media.
  • the rolling type rotating mechanism uses a plurality of hard balls preset in the cage as the rotating medium to make the moving plate rotate in the circular track formed by the upper and lower rows of balls.
  • an upper anti-off hook is installed on the movable plate, and a lower anti-off hook is installed on the fixed plate.
  • the upper and lower anti-disengagement hooks hook each other to improve the anti-separation effect of the rotating device.
  • the second technical problem to be solved by the present invention is that when the hard steel balls are used as the rotating medium in the existing rotating device, the upper and lower two rings of steel balls are likely to be crushed when the compression bolts are tightened according to the standard torque.
  • the invention provides a rotating device for a vehicle seat which has a smooth rotating operation force and can appropriately adjust the rotating damping value.
  • the rotating device for a vehicle seat includes a fixed plate, a lower ball assembly, a moving plate, an upper ball assembly and a pressure plate arranged in sequence from bottom to top, and a plurality of The group is connected by a fastening structure, a first lower circular orbit is formed on the fixed plate by molding, and a first upper circular orbit and a second lower circular orbit are formed on the movable plate by molding Rail, on the pressure plate, a second upper circular rail is formed by molding; the upper ball assembly includes a plurality of rolling contact with the second upper circular rail and the second lower circular rail The upper ball and the upper cage between the pressure plate and the movable plate for holding these upper balls; the lower ball assembly includes a plurality of first upper circular orbits and first lower circular orbits The lower balls in the rolling contact of the track and the lower holder holding these lower balls between the movable plate and the fixed plate; an upper anti-disengagement hook is fixed on the fixed plate, and an outer circumference of the movable plate is formed The lower anti-decoupling hook, the
  • the diameter of the upper ball and the lower ball are both 10 mm.
  • the diameter of the upper ball is equal to the diameter of the lower ball, and the distance between the over-center plumb line of the upper ball and the over-center plumb line of the lower ball is equal to Upper ball diameter or lower ball diameter.
  • a gasket is provided between the pressure plate and the fixed plate, and The fastening structure passes through the gasket; there are a number of bosses evenly distributed circumferentially on the surface of the gasket that contacts the pressure plate, and the bosses are used to relieve the moving plate from being pressed by the fixed plate and Disc clamping friction.
  • the gasket is an annular gasket.
  • the gasket is composed of at least two arc-shaped gaskets.
  • the arc-shaped gasket is The tolerance zone between the pressure plate and the fixed plate is assembled in groups to obtain rotating devices with different rotation damping values.
  • several groups of fastening structures are evenly distributed in the circumferential direction to fix and connect the inner edge of the pressure plate and the inner edge of the fixed plate.
  • the upper decoupling prevention connecting bolt is spot welded on the outer periphery of the upper decoupling prevention.
  • a number of stepped nuts with a T-shaped axial cross section are fixed at intervals in the circumferential direction of the moving disk, and the nut head of each stepped nut is located below the moving disk and is connected to the The bottom surface of the moving plate is tightly attached, and the nut part of the stepped nut penetrates the moving plate upwards; connect the bolt on the seat with the nut part of the corresponding stepped nut to install the seat on the moving plate On and tightly connected with the moving plate.
  • the nut head of the stepped nut is fixed on the movable plate by welding.
  • the module connecting bolts are fixed at intervals in the circumferential direction of the moving plate according to the position where other modules are installed.
  • the bolt head is located below the moving plate and is in close contact with the bottom surface of the moving plate, and the screw part of the module connecting bolt penetrates the moving plate upwards.
  • Fig. 1 is an exploded schematic diagram of a rotating device for a vehicle seat of the present invention.
  • Fig. 3 is a B-B sectional view of Fig. 1.
  • Fig. 7 is a top view of the rotation device for a vehicle seat of the present invention.
  • Fig. 8 is a schematic diagram of the assembly of the arc-shaped gasket used in the rotation device of the vehicle seat of the present invention.
  • the fixed plate 100 and the pressure plate 500 are connected by eight sets of fastening structures.
  • the eight groups of fastening structures uniformly connect the inner edge 510 of the pressure plate 500 and the inner edge 110 of the fixed plate 100 in a circumferential direction.
  • Each set of fastening structures includes a through hole 511 formed on the inner edge 510 of the pressure plate 500, a threaded hole 111 formed on the inner edge 110 of the fixed plate 100, and a bolt 600 screwed into the threaded hole 111 through the through hole 511.
  • the invention saves spot welding nuts by directly forming the threaded holes 111 on the inner edge 110 of the fixed plate 100, reduces the weight of the transmission device and reduces the cost.
  • the upper ball assembly 400 includes 18 upper balls 410 in rolling contact with the second upper annular track 520 and the second lower annular track 320, and between the pressure plate 500 and the movable plate 300 that hold the 18 upper balls 410 ⁇ 420 ⁇ On the cage 420.
  • the diameters of the 18 upper balls 410 and the 18 lower balls 210 are equal, and both are 10 mm.
  • the 18 upper balls 410 and the 18 lower balls 210 are all steel balls.
  • the diameters of the envelope arc 121 where the first lower circular track 120 contacts the lower ball 210 and the envelope arc 311 where the first upper circular track 310 contacts the lower ball 210 are equal to the diameter of the lower ball 210, and the height Both are equal to 0.8 times the diameter of the lower ball 210.
  • the diameter of the envelope arc 321 of the second lower circular track 320 in contact with the upper ball 410 and the envelope arc 521 of the second upper circular track 520 in contact with the upper ball 410 are equal to the diameter of the upper ball 410, and the height Both are equal to 0.8 times the diameter of the upper ball 410.
  • the distance between the over-center plumb line of the upper ball 410 and the over-center plumb line of the lower ball 210 is 10 mm.
  • the sphere centers of the upper ball 410 and the lower ball 210 of the present invention are always unable to move relative to the center of the respective track section.
  • the upper and lower balls enveloping the upper and lower tracks directly support each other, thereby Produce its own very stable structural unit.
  • the envelope design of the upper and lower rails of the present invention on the upper and lower balls 410, 210 makes it possible to keep the movable plate 300 relative to the fixed plate 100 always at a radial (Y) force and maintain zero movement relative to each other, even in the radial direction.
  • the force received comes from the seat mounted on the rotating device.
  • the rotating axis of the rotating device coincides with the vertical axis of the geometric center around which the seat rotates. Therefore, in the present invention, the moving plate 300 is immovable up and down and in the horizontal direction under any circumstances, which solves the problem of rolling the track caused by the radial movement of the balls, makes the rotating operation force of the moving plate smoother and improves the use. Life and rotation accuracy.
  • a gasket 700 is provided between the pressure plate 500 and the fixed plate 100. Eight through holes 710 are also opened on the gasket 700, and the bolt 600 passes through the corresponding through holes 710.
  • the thickness of the spacer 700 is 1 mm.
  • bosses 720 are evenly distributed in the circumferential direction on the surface of the washer 700 in contact with the pressure plate 500, and the bosses 720 are used to reduce the friction force of the movable plate 300 clamped by the fixed plate 100 and the pressure plate 500.
  • the height of the boss 720 is 0.2-0.4 mm, and the higher the height of the boss, the more obvious the effect of reducing the frictional resistance of the moving disc.
  • the gasket 700 of the present invention is an annular gasket, and can also be composed of two arc-shaped gaskets 730 and 740, and each arc-shaped gasket 730, 740 is provided with four through holes 710.
  • the two arc-shaped washers 730 and 740 are assembled in groups according to the tolerance zone between the pressure plate 500 and the fixed plate 100 to obtain a rotating device with different rotation damping values .
  • an upper anti-separation hook 810 is fixed on the outer periphery of the fixed plate 100.
  • the upper anti-separation hook 810 is annular in the circumferential direction and has an inverted J shape in the axial direction.
  • a lower anti-disengagement hook 330 is formed by molding.
  • the lower anti-disengagement hook 330 is annular in the circumferential direction and has a J shape in the axial direction.
  • the upper anti-disengagement hook 810 and the lower disengagement prevention hook 330 are engaged with each other to improve
  • the anti-separation strength between the movable plate 300 and the fixed plate 100 can withstand a force of more than 20,000 N without being separated.
  • the use of such an anti-separation method between the movable plate 300 and the fixed plate 100 reduces parts and procedures compared with the prior art, and at the same time has the advantages of low section height and small space occupation.
  • the upper anti-decoupling 810 is fixed on the outer periphery of the fixed plate 100 by using four anti-decoupling connecting bolts 811 and four anti-decoupling connecting nuts 812.
  • each upper anti-disengagement connecting bolt 811 is spot welded on the outer periphery of the upper anti-disengagement 810.
  • the present invention is in the circumferential direction of the moving plate 300.
  • Six stepped nuts 820 with a T-shaped axial cross section are fixed at intervals.
  • each stepped nut 820 is rectangular, located below the moving plate 300 and closely adhering to the bottom surface of the moving plate 300, and is fixed on the moving plate 300 by welding, so as to increase the difference between the nut head 821 and the bottom surface of the moving plate 300.
  • the contact area between the two greatly improves the connection strength between the stepped nut 820 and the moving plate 300.
  • the nut portion 822 of the stepped nut 820 penetrates upwards out of the moving plate 300; connect the bolt on the seat to the nut portion 822 of the corresponding stepped nut 820, then the seat can be installed on the moving plate 300 and tightly tightened with the moving plate 300 Solid connection.
  • восем ⁇ lower connecting bolts 830 of the rotating device are fixed in the circumferential direction of the outer periphery of the upper anti-disengagement hook 810, and start at intervals in the circumferential direction of the outer periphery of the fixed plate 100
  • module connecting bolts 840 are fixed at intervals in the circumferential direction of the moving plate 300 according to the location where other modules are installed.
  • the bolt head 841 of each module connecting bolt 840 is located on the moving plate 300.
  • the module connection bolt 840 is fixedly connected to the movable disk 300 by spot welding.
  • the screw part 842 of the module connecting bolt 840 passes through the moving plate 300 upward, and after other modules are installed on the module connecting bolt 840, they are locked with a nut 850.
  • the present invention has eight weight-reducing inner grooves 512, 112 at intervals in the circumferential direction of the inner edge 510 of the pressure plate 500 and the inner edge 110 of the fixed plate 100, each The depth of the recess in the weight reduction is 17mm. In this way, the excess material between the bolts 600 is removed under the condition that the blank holder amount of the bolt 600 remains unchanged, so that the weight is reduced without decreasing the connection strength.
  • each weight-reducing outer groove 150 is precisely cut in the circumferential direction of the outer edge of the fixed plate 100 at intervals.
  • the depth of each weight-reducing outer groove 150 is 17 mm.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

用于车辆座椅的转动装置，包括由下到上依次排布的定盘（100）、下滚珠总成（200）、动盘（300）、上滚珠总成（400）和压盘（500），在定盘（100）上成型有第一下圆环形轨道（120），在动盘（300）上成型有第一上圆环形轨道（310）和第二下圆环形轨道（320），在压盘（500）上成型有第二上圆环形轨道（520），第一、第二包络弧线（121、311）的直径均等于下滚珠（210）的直径，高度均等于下滚珠（210）直径的0.8倍；第三、四包络弧线（321、521）的直径均等于上滚珠（410）的直径，高度均等于上滚珠（410）直径的0.8倍。

Description

用于车辆座椅的转动装置 技术领域
本发明涉及汽车座椅技术领域，特别涉及用于车辆座椅的转动装置。
背景技术
目前用于汽车座椅绕垂直轴旋转的转动装置，按照旋转介质不同，分为滚动式转动装置和滑动式转动装置两种。滚动式旋转机构是利用预设在保持架中的多个硬质滚珠作为旋转介质，使动盘在上下两排滚珠形成的环形轨道内旋转运动。为了提高分离强度，在动盘上安装有上防脱钩，在定盘上安装有下防脱钩。在受力时，上、下防脱钩互相勾住，用来提高转动装置的抗分离作用。
以上技术方案在本领域属于公知技术，可以参见中国发明专利CN106427682A和CN97114364.1以及CN10793806A。
但是上述现有技术都存在以下问题：
(1)当座椅处于锁定状态时，转动装置在高动态冲击应力作用下，例如车辆剧烈运动时，上、下滚珠会反复在同一个点上径向碾压环形轨道。如果不对径向的这种碾压效应进行控制，硬质滚珠作用于较软冲压板材件的结果是会在环形轨道的表面上压出压痕或其它破坏，每当硬质滚珠转到压痕处时，通常会产生明显的顿挫，这会给使用者带来较差的使用体验。同时对整个转动装置的使用寿命也有明显影响。这种情况对于MPV中排独立座椅，这种问题会经常出现，因为这种座椅需要承受较高的压力。
(2)转动装置的转动部位使用硬质钢珠作为转动介质时，上下两圈钢珠在压紧螺栓按照标准扭矩拧紧时，容易产生压死不动的问题。
(3)转动装置同时作为车辆发生碰撞时的受力终端，要求转动装置不会失效以保护乘员免受伤害。尤其是三个安全带固定点都安装在座椅的情形下，对转动装置的强度性能提出了更高的要求，目前已知车辆座椅的各种转动技术方案中，例如中国发明专利申请公布号CN108528280A,其在旋转盘上安装有电机来驱动一个调角器核心件，利用调角器核心件的自锁特性来完成转动装置的转动和停止。但由于调角器核心件的直径较小，不能承受较大的径向(Y)向载荷，无法满足三点式安全带座椅的强度要求。
(4)现有的转动装置在保证强度的情况下，重量都比较重，不符合目前车辆轻量化的要求。
发明内容
本发明所要解决的技术问题之一在于针对现有转动装置所存在的硬质滚珠对环形轨道的压痕造成的运行顿挫问题而提供一种具有顺滑的旋转操作力且能适当提高转动装置使用寿命的用于车辆座椅的转动装置。
本发明所要解决的技术问题之二在于针对现有转动装置所存在的使用硬质钢珠作为转动介质时，上下两圈钢珠在压紧螺栓按照标准扭矩拧紧时，容易产生压死不动的问题而提供一种具有顺滑的旋转操作力且可适当调整旋转阻尼值的用于车辆座椅的转动装置。
本发明所要解决的技术问题之三在于针对现有转动装置所存在的无法满足三点式安全带座椅的强度要求和不适合轻量化要求的问题而提供一种高强度、轻量化的用于车辆座椅的转动装置。
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：
用于车辆座椅的转动装置，包括由下到上依次排布的定盘、下滚珠总成、动盘、上滚珠总成和压盘，所述定盘与所述压盘之间通过若干组紧固结构连接，在所述定盘上通过模压方式成型有第一下圆环形轨道，在所述动盘上通过模压方式成型有第一上圆环形轨道和第二下圆环形轨道，在所述压盘上通过模压方式成型有第二上圆环形轨道；所述上滚珠总成包括若干与所述第二上圆环形轨道和第二下圆环形轨道滚动接触的上滚珠和将这些上滚珠保持的所述压盘与所述动盘之间的上保持架；所述下滚珠总成包括若干与所述第一上圆环形轨道和第一下圆环形轨道滚动接触的下滚珠和将这些下滚珠保持在所述动盘与所述定盘之间的下保持架；在所述定盘上固定有上防脱钩，在所述动盘的外周成型有下防脱钩，所述上防脱钩与所述下防脱钩相互勾合，以防止动盘脱出；其特征在于，所述第一下圆环形轨道与所述下滚珠接触的第一包络弧线、所述第一上圆环形轨道与所述下滚珠接触的第二包络弧线的直径均等于下滚珠的直径，第一包络弧线和第二包络弧线的高度均等于下滚珠的直径的0.8倍；所述第二下圆环形轨道与所述上滚珠接触的第三包络弧线、所述第二上圆环形轨道与所述上滚珠接触的第四包络弧线的直径均等于上滚珠的直径，第三包络弧线和第四包络弧线的高度均等于上滚珠的直径的0.8倍。
在本发明的一个优选实施例中，所述上滚珠和下滚珠的直径均为10mm。
在本发明的一个优选实施例中，所述第一上圆环形轨道与所述第二下圆环形轨道在径向上呈波浪形连接。
在本发明的一个优选实施例中，所述上滚珠的直径等于所述下滚珠的直径且所述上滚 珠的过圆心铅垂线与所述下滚珠的过圆心铅垂线之间的距离等于上钢珠直径或下钢珠直径。
在本发明的一个优选实施例中，为了防止压盘将上滚珠和下滚珠压死并可以适当调整旋转时的阻尼，在所述压盘与所述定盘之间设置有垫片，所述紧固结构穿过所述垫片；在所述垫片与所述压盘接触的那一面上周向均布有若干凸台，所述凸台用来减轻所述动盘被所述定盘和压盘夹持式的摩擦力。
在本发明的一个优选实施例中，所述凸台的高度为0.2～0.4mm,凸台高度越高，减轻动盘摩擦阻力的效果越明显。
在本发明的一个优选实施例中，所述垫片为环形垫片。
在本发明的一个优选实施例中，所述垫片由至少两块弧形垫片组成，在所述紧固结构安装顺序和拧紧力恒定的情况下，将所述弧形垫片按照所述压盘与所述定盘之间的公差带分组装配，以得到不同旋转阻尼值的转动装置。
在本发明的一个优选实施例中，所述垫片的厚度为1mm。
在本发明的一个优选实施例中，若干组紧固结构周向均布的将所述压盘的内缘和定盘的内缘固定连接在一起。
在本发明的一个优选实施例中，每组紧固结构包括成型在所述压盘内缘上的通孔和成型在所述定盘内缘上的螺纹孔以及穿过所述通孔旋入所述螺纹孔内的螺栓。通过直接在所述定盘内缘上成型螺纹孔，节约了点焊螺母，减轻了传动装置的重量并降低了成本。
在本发明的一个优选实施例中，在所述上防脱钩外周缘的圆周方向间隔固定有若干上防脱钩连接螺栓，并在所述定盘外周缘的圆周方向间隔开始有若干上防脱钩连接螺栓穿过孔，每一上防脱钩连接螺栓穿过对应的上防脱钩连接螺栓穿过孔后旋紧一上防脱钩连接螺母，即可将所述上防脱钩与所述定盘紧固连接在一起。
在本发明的一个优选实施例中，所述上防脱钩连接螺栓点焊在所述上防脱钩外周缘上。
在本发明的一个优选实施例中，在所述上防脱钩外周缘的圆周方向间隔固定有若干转动装置下连接螺栓，并在所述定盘外周缘的圆周方向间隔开始有若干转动装置连接螺栓穿过孔，每一转动装置下连接螺栓穿过对应的转动装置连接螺栓穿过孔后，与车身地板或者基座连接，从而将本发明的用于车辆座椅的转动装置固定在车身地板或者基座上。
在本发明的一个优选实施例中，在所述动盘的圆周方向间隔固定有若干轴向截面呈T型的台阶螺母，每一台阶螺母的螺母头位于所述动盘的下方并与所述动盘的底面紧贴，所述台阶螺母的螺母部分向上穿出所述动盘；将座椅上的螺栓与对应的台阶螺母上的螺母部 分连接，即可将座椅安装在所述动盘上并与所述动盘紧固连接。通过在动盘上设置台阶螺母，提高料座椅与动盘之间的抗脱离性能。
在本发明的一个优选实施例中，所述台阶螺母的螺母头为矩形，以提高螺母头与动盘的底面之间的接触面积，大大提高台阶螺母与动盘之间的连接强度。
在本发明的一个优选实施例中，所述台阶螺母的螺母头采用焊接方式固定在所述动盘上。
在本发明的一个优选实施例中，为了实现所述动盘与其它模块的连接，在所述动盘的圆周方向根据安装其它模块的位置要求间隔固定有模块连接螺栓，每一模块连接螺栓的螺栓头位于所述动盘的下方并与所述动盘的底面紧贴，所述模块连接螺栓的螺杆部分向上穿出所述动盘。
在本发明的一个优选实施例中，所述模块连接螺栓与所述动盘之间采用点焊方式固定连接。
在本发明的一个优选实施例中，在所述压盘内缘的圆周方向和所述定盘内缘的圆周方向间隔精切有若干减重内凹槽，在所述定盘的外缘的圆周方向间隔精切有若干减重外凹槽。
在本发明的一个优选实施例中，所述减重内凹槽和减重外凹槽的深度均为17mm。
由于采用了如上的技术方案，本发明的上滚珠和下滚珠的球心始终相对各自所述轨道截面的中心无法产生移动，在受到座椅传递过来的径向力时，上下轨道相对彼此包络的上下滚珠直接相互支撑，从而产生自身非常稳定的结构单元。总之，本发明的上下轨道对上下滚珠的包络设计，使得动盘相对于定盘总是保持在受到径(Y)向力时相对彼此保持零窜动量成为可能，即使在径向上受到的力来自于安装在转动装置之上的座椅，这种情况下，转动装置的旋转轴与座椅旋转所绕的几何中心的垂直轴是重合的。因此本发明在任何情况下，动盘上下和水平方向都是不可移动的，解决了滚珠的径向窜动对轨道的碾压问题，使动盘的旋转操作力更加顺滑且提高了使用寿命和旋转精度。
附图说明
图1为本发明用于车辆座椅的转动装置的分解示意图。
图2为图1的A-A剖视图。
图3为图1的B-B剖视图。
图4为本发明用于车辆座椅的转动装置的结构剖视图。
图5为本发明用于车辆座椅的转动装置的结构立体剖视图。
图6为本发明用于车辆座椅的转动装置的结构立体示意图。
图7为本发明用于车辆座椅的转动装置的俯视图。
图8为本发明用于车辆座椅的转动装置中的弧形垫片装配示意图。
具体实施方式
以下结合附图和具体实施方式来详细描述本发明。
参见图1至图8，图中所示的用于车辆座椅的转动装置，包括由下到上依次排布的定盘100、下滚珠总成200、动盘300、上滚珠总成400和压盘500。
定盘100与压盘500之间通过八组紧固结构连接。尤其是八组紧固结构周向均布地将压盘500的内缘510和定盘100的内缘110固定连接在一起。
每组紧固结构包括成型在压盘500内缘510上的通孔511和成型在定盘100内缘110上的螺纹孔111以及穿过通孔511旋入螺纹孔111内的螺栓600。本发明通过直接在定盘100内缘110上成型螺纹孔111，节约了点焊螺母，减轻了传动装置的重量并降低了成本。
在定盘100上通过模压方式成型有第一下圆环形轨道120，在动盘300上通过模压方式成型有第一上圆环形轨道310和第二下圆环形轨道320，在压盘500上通过模压方式成型有第二上圆环形轨道520。第一上圆环形轨道310与第二下圆环形轨道320在径向上呈波浪形连接。
上滚珠总成400包括18颗与第二上圆环形轨道520和第二下圆环形轨道320滚动接触的上滚珠410和将18颗上滚珠410保持的压盘500与动盘300之间的上保持架420。
下滚珠总成200包括18颗与第一上圆环形轨道310和第一下圆环形轨道120滚动接触的下滚珠210和将18颗下滚珠210保持在动盘300与定盘100之间的下保持架220。
18颗上滚珠410与18颗下滚珠210的直径相等，均为10mm。18颗上滚珠410和18颗下滚珠210均为钢质滚珠。
第一下圆环形轨道120与下滚珠210接触的包络弧线121、第一上圆环形轨道310与下滚珠210接触的包络弧线311的直径均等于下滚珠210的直径，高度均等于下滚珠210的直径的0.8倍。
第二下圆环形轨道320与上滚珠410接触的包络弧线321、第二上圆环形轨道520与上滚珠410接触的包络弧线521的直径均等于上滚珠410的直径，高度均等于上滚珠410的直径的0.8倍。
上滚珠410的过圆心铅垂线与下滚珠210的过圆心铅垂线之间的距离为10mm。
本发明的上滚珠410和下滚珠210的球心始终相对各自轨道截面的中心无法产生移动，在受到座椅传递过来的径向力时，上下轨道相对彼此包络的上下滚珠直接相互支撑，从而产生自身非常稳定的结构单元。本发明的上下轨道对上下滚珠410、210的包络设计，使得动盘300相对于定盘100总是保持在受到径(Y)向力时相对彼此保持零窜动量成为可能，即使在径向上受到的力来自于安装在转动装置之上的座椅，这种情况下，转动装置的旋转轴与座椅旋转所绕的几何中心的垂直轴是重合的。因此本发明在任何情况下，动盘300上下和水平方向都是不可移动的，解决了滚珠的径向窜动对轨道的碾压问题，使动盘的旋转操作力更加顺滑且提高了使用寿命和旋转精度。
为了防止压盘500将上滚珠410和下滚珠210压死并可以适当调整旋转时的阻尼，在压盘500与定盘100之间设置有垫片700。在垫片700上也开设有八个通孔710，螺栓600穿过对应的通孔710。垫片700的厚度为1mm。
在垫片700与压盘500接触的那一面上周向均布有若干凸台720，凸台720用来减轻动盘300被定盘100和压盘500夹持式的摩擦力。凸台720的高度为0.2～0.4mm,凸台高度越高，减轻动盘摩擦阻力的效果越明显。
本发明的垫片700为环形垫片，也可以由两块弧形垫片730、740组成，每块弧形垫片730、740各开设有四个通孔710。在八个螺栓600安装顺序和拧紧力恒定的情况下，将两块弧形垫片730、740按照压盘500与定盘100之间的公差带分组装配，以得到不同旋转阻尼值的转动装置。
为了防止动盘300脱出，在定盘100的外周缘上固定有上防脱钩810，上防脱钩810在圆周方向成环状，在轴向上呈倒J形状。在动盘300的外周通过模压方式成型有下防脱钩330，下防脱钩330在圆周方向成环状，在轴向上呈J形状，上防脱钩810与下防脱钩330相互勾合，以提高动盘300与定盘100之间的抗分离强度，能够承受20000N以上的力而不会脱开。动盘300与定盘100之间采用这样防分离方式，与现有技术相比，减少了零件和工序，同时具有截面高度低，占用空间小的优点。
上防脱钩810采用4颗防脱钩连接螺栓811和四个防脱钩连接螺母812固定在定盘100的外周缘上。
4颗防脱钩连接螺栓811点焊在上防脱钩810的外周缘上，在定盘100外周缘的圆周方向间隔开始有若干上防脱钩连接螺栓穿过孔130，每一上防脱钩连接螺栓811穿过对应的上防脱钩连接螺栓穿过孔130后旋紧一上防脱钩连接螺母812，即可将上防脱钩810与定盘100紧固连接在一起。
在动盘300与定盘100之间的抗分离强度提高情况下，相应的动盘300余座椅的连接位置的抗脱离性能也需要随之提高，因此，本发明在动盘300的圆周方向间隔固定有六个轴向截面呈T型的台阶螺母820。
每一台阶螺母820的螺母头821为矩形，位于动盘300的下方并与动盘300的底面紧贴并采用焊接方式固定在动盘300上，以提高螺母头821与动盘300的底面之间的接触面积，大大提高台阶螺母820与动盘300之间的连接强度。台阶螺母820的螺母部分822向上穿出动盘300；将座椅上的螺栓与对应的台阶螺母820上的螺母部分822连接，即可将座椅安装在动盘300上并与动盘300紧固连接。
为了实现本发明的旋转装置与基座或车身地板的连接，在上防脱钩810外周缘的圆周方向间隔固定有八个转动装置下连接螺栓830，并在定盘100外周缘的圆周方向间隔开始有八个转动装置连接螺栓穿过孔140，每一转动装置下连接螺栓830穿过对应的转动装置连接螺栓穿过孔140后，与车身地板或者基座连接。
为了实现所述动盘与其它模块的连接，在动盘300的圆周方向根据安装其它模块的位置要求间隔固定有四个模块连接螺栓840，每一模块连接螺栓840的螺栓头841位于动盘300的下方并与动盘300的底面紧贴，模块连接螺栓840与动盘300之间采用点焊方式固定连接。模块连接螺栓840的螺杆部分842向上穿出动盘300,其它模块安装到模块连接螺栓840后,用螺母850锁紧.
为了实现产品轻量化的同时保持强度性能，本发明在压盘500内缘510的圆周方向和定盘100内缘110的圆周方向间隔精切有八个减重内凹槽512、112，每个减重内凹槽的深度为17mm。这样在保证螺栓600压边量不变的情况下，去掉螺栓600之间的多余材料，使得连接强度没有下降的情况下，重量得到减轻。
另外本发明在定盘100的外缘的圆周方向间隔精切有八个减重外凹槽150。每个减重外凹槽150的深度为17mm。这样在保证防脱钩连接螺栓811和八个转动装置下连接螺栓830压边量不变的情况下，去掉防脱钩连接螺栓811和八个转动装置下连接螺栓830之间的多余材料，使得连接强度没有下降的情况下，重量得到减轻。

Claims (21)

  1. 用于车辆座椅的转动装置，包括由下到上依次排布的定盘、下滚珠总成、动盘、上滚珠总成和压盘，所述定盘与所述压盘之间通过若干组紧固结构连接，在所述定盘上通过模压方式成型有第一下圆环形轨道，在所述动盘上通过模压方式成型有第一上圆环形轨道和第二下圆环形轨道，在所述压盘上通过模压方式成型有第二上圆环形轨道；所述上滚珠总成包括若干与所述第二上圆环形轨道和第二下圆环形轨道滚动接触的上滚珠和将这些上滚珠保持的所述压盘与所述动盘之间的上保持架；所述下滚珠总成包括若干与所述第一上圆环形轨道和第一下圆环形轨道滚动接触的下滚珠和将这些下滚珠保持在所述动盘与所述定盘之间的下保持架；在所述定盘上固定有上防脱钩，在所述动盘的外周成型有下防脱钩，所述上防脱钩与所述下防脱钩相互勾合，以防止动盘脱出；其特征在于，所述第一下圆环形轨道与所述下滚珠接触的第一包络弧线、所述第一上圆环形轨道与所述下滚珠接触的第二包络弧线的直径均等于下滚珠的直径，第一包络弧线和第二包络弧线的高度均等于下滚珠的直径的0.8倍；所述第二下圆环形轨道与所述上滚珠接触的第三包络弧线、所述第二上圆环形轨道与所述上滚珠接触的第四包络弧线的直径均等于上滚珠的直径，第三包络弧线和第四包络弧线的高度均等于上滚珠的直径的0.8倍。
  2. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，所述上滚珠和下滚珠的直径均为10mm。
  3. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，所述第一上圆环形轨道与所述第二下圆环形轨道在径向上呈波浪形连接。
  4. 如权利要求3所述的用于车辆座椅的转动装置，其特征在于，所述上滚珠的直径等于所述下滚珠的直径且所述上滚珠的过圆心铅垂线与所述下滚珠的过圆心铅垂线之间的距离等于上钢珠直径或下钢珠直径。
  5. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，在所述压盘与所述定盘之间设置有垫片，所述紧固结构穿过所述垫片；在所述垫片与所述压盘接触的那一面上周向均布有若干凸台。
  6. 如权利要求5所述的用于车辆座椅的转动装置，其特征在于，所述凸台的高度为0.2～0.4mm。
  7. 如权利要求5所述的用于车辆座椅的转动装置，其特征在于，所述垫片为环形垫片。
  8. 如权利要求5所述的用于车辆座椅的转动装置，其特征在于，所述垫片由至少两块 弧形垫片组成，在所述紧固结构安装顺序和拧紧力恒定的情况下，将所述弧形垫片按照所述压盘与所述定盘之间的公差带分组装配，以得到不同旋转阻尼值的转动装置。
  9. 如权利要求5所述的用于车辆座椅的转动装置，其特征在于，所述垫片的厚度为1mm。
  10. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，若干组紧固结构周向均布的将所述压盘的内缘和定盘的内缘固定连接在一起。
  11. 如权利要求10所述的用于车辆座椅的转动装置，其特征在于，每组紧固结构包括成型在所述压盘内缘上的通孔和成型在所述定盘内缘上的螺纹孔以及穿过所述通孔旋入所述螺纹孔内的螺栓。
  12. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，在所述上防脱钩外周缘的圆周方向间隔固定有若干上防脱钩连接螺栓，并在所述定盘外周缘的圆周方向间隔开始有若干上防脱钩连接螺栓穿过孔，每一上防脱钩连接螺栓穿过对应的上防脱钩连接螺栓穿过孔后旋紧一上防脱钩连接螺母，即可将所述上防脱钩与所述定盘紧固连接在一起。
  13. 如权利要求12所述的用于车辆座椅的转动装置，其特征在于，所述上防脱钩连接螺栓点焊在所述上防脱钩外周缘上。
  14. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，在所述上防脱钩外周缘的圆周方向间隔固定有若干转动装置下连接螺栓，并在所述定盘外周缘的圆周方向间隔开始有若干转动装置连接螺栓穿过孔，每一转动装置下连接螺栓穿过对应的转动装置连接螺栓穿过孔后，与车身地板或者基座连接。
  15. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，在所述动盘的圆周方向间隔固定有若干轴向截面呈T型的台阶螺母，每一台阶螺母的螺母头位于所述动盘的下方并与所述动盘的底面紧贴，所述台阶螺母的螺母部分向上穿出所述动盘；将座椅上的螺栓与对应的台阶螺母上的螺母部分连接，即可将座椅安装在所述动盘上并与所述动盘紧固连接。
  16. 如权利要求15所述的用于车辆座椅的转动装置，其特征在于，所述台阶螺母的螺母头为矩形。
  17. 如权利要求16所述的用于车辆座椅的转动装置，其特征在于，所述台阶螺母的螺母头采用焊接方式固定在所述动盘上。
  18. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，在所述动盘的圆周方向间隔固定有模块连接螺栓，每一模块连接螺栓的螺栓头位于所述动盘的下方并与所述动盘的底面紧贴，所述模块连接螺栓的螺杆部分向上穿出所述动盘。
  19. 如权利要求18所述的用于车辆座椅的转动装置，其特征在于，所述模块连接螺栓与所述动盘之间采用点焊方式固定连接。
  20. 如权利要求1所述的用于车辆座椅的转动装置，其特征在于，在所述压盘内缘的圆周方向和所述定盘内缘的圆周方向间隔精切有若干减重内凹槽，在所述定盘的外缘的圆周方向间隔精切有若干减重外凹槽。
  21. 如权利要求20所述的用于车辆座椅的转动装置，其特征在于，所述减重内凹槽和减重外凹槽的深度均为17mm。
PCT/CN2019/130592 2019-02-14 2019-12-31 用于车辆座椅的转动装置 WO2020164326A1 (zh)

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EP19914985.7A EP3925822A4 (en) 2019-02-14 2019-12-31 ROTATION DEVICE FOR VEHICLE SEAT
US17/310,630 US11701986B2 (en) 2019-02-14 2019-12-31 Rotation device for vehicle seat

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CN109677302B (zh) 2020-08-28
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