WO2014169551A1 - 锁紧机构、连接机构、连接总成以及锁紧机构的工作方法 - Google Patents

锁紧机构、连接机构、连接总成以及锁紧机构的工作方法 Download PDF

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Publication number
WO2014169551A1
WO2014169551A1 PCT/CN2013/082930 CN2013082930W WO2014169551A1 WO 2014169551 A1 WO2014169551 A1 WO 2014169551A1 CN 2013082930 W CN2013082930 W CN 2013082930W WO 2014169551 A1 WO2014169551 A1 WO 2014169551A1
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WIPO (PCT)
Prior art keywords
connecting portion
shaft
locking
wall
hole
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Application number
PCT/CN2013/082930
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English (en)
French (fr)
Inventor
丁光学
Original Assignee
安徽江淮汽车股份有限公司
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Publication date
Application filed by 安徽江淮汽车股份有限公司 filed Critical 安徽江淮汽车股份有限公司
Priority to BR112015026324A priority Critical patent/BR112015026324A2/pt
Publication of WO2014169551A1 publication Critical patent/WO2014169551A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R3/00Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
    • B60R3/02Retractable steps or ladders, e.g. movable under shock

Definitions

  • the present invention relates to a connecting device, and more particularly to a locking mechanism, a connecting mechanism, a connecting assembly, and a working method of the locking mechanism.
  • the floor of a commercial vehicle is generally more than 350mm above the ground.
  • an automatic stepping device (retractable tread plate) is generally added to the sliding door, when the sliding door moves backward (opening process)
  • the sliding door drives the tread plate to extend.
  • the tread plate is fully extended, and the occupant can conveniently get on and off through the automatic tread board.
  • the automatic stepping device includes a first connecting portion 21, a first connecting rod 23, and a second connecting rod 24, which are sequentially connected.
  • the end of the first link 23 and the first end of the second link 24 are rotatably connected by a pin
  • the end of the second link 24 and the first end of the third link 25 are rotatably connected by a pin
  • the end of the three link 25 is fixedly coupled to the tread plate 26.
  • the reason why the universal joint 22 is used between the first connecting portion 21 and the first link 23 is: In reality, the sliding door that drives the automatic stepping device does not only have an X direction (ie, slip) during the sliding process.
  • the sliding direction of the door) moves, the Y direction (in the same horizontal plane as the X direction, and the direction perpendicular to the X direction) moves in the Z direction (the direction perpendicular to the X direction and the Y direction), due to the first link 23
  • the end of the second link 24 is rotatably connected by a pin shaft, and the end of the second link 24 and the first end of the third link 25 are also rotatably connected by a pin, so the second link 24 and the
  • the movement of the three links 25 can be determined to have only one degree of freedom, so that the Z-direction movement and the Y-direction movement of the sliding door, especially the Z-direction movement (about 6 mm, the axis angle of about 0.728°) can only be used for the connection.
  • the problem of the above automatic stepping device is that: the universal connector 22 is used, firstly, the weight of the entire automatic stepping device is increased, the vibration inertia is large during the running of the vehicle, the noise is large and the damage is easy; Second, the cost will be greatly increased; third, it is not easy to disassemble. Summary of the invention
  • An object of the present invention is to overcome the deficiencies of the prior art and to provide a locking mechanism, a connecting mechanism, a connecting assembly and a working method of the locking mechanism.
  • the locking mechanism is configured to connect the first connecting portion and the second connecting portion, wherein the locking mechanism comprises a profiled shaft, a first spacer and a second spacer;
  • the profiled shaft is sequentially divided into a first shaft portion, a second shaft portion and a third shaft portion by a flange and a step surface disposed on the outer wall thereof in the circumferential direction;
  • the end of the first connecting portion and the first end of the second connecting portion are respectively provided with a through hole, and the end of the first connecting portion, the first pad, the first end of the second connecting portion and the second pad are mutually
  • the gap is matched and sequentially sleeved on the second shaft portion;
  • the third shaft portion is sequentially sleeved with a third spacer and a nut, and the third spacer is screwed on the third shaft portion a nut is abutted on the step surface;
  • first gasket and the second gasket are both made of a soft wear resistant material.
  • the total of the gaps of the ends of the first connecting portion, the first spacer, the first end of the second connecting portion and the second spacer in the axial direction of the profiled shaft is l.1 to 1.2 mm.
  • a gap between an outer wall of the second shaft portion and an inner wall of the through hole of the end of the first connecting portion, a gap with the inner wall of the first gasket, and a first portion of the second connecting portion The gap between the inner wall of the through hole and the gap between the inner wall of the second gasket and the inner wall of the second gasket satisfy the maximum of 0.2 to 0.5 mm.
  • the through hole at the end of the first connecting portion and the through hole at the leading end of the second connecting portion are the same circular through hole, and the second shaft portion has a diameter smaller than the circular opening.
  • the cylindrical shape of the aperture of the hole is the same circular through hole, and the second shaft portion has a diameter smaller than the circular opening.
  • the second shaft portion has two chord planes that are symmetrical about the axis of the second shaft portion.
  • the first gasket and the second gasket are nylon gaskets.
  • the end of the first connecting portion and the leading end of the second connecting portion are detachably connected by the locking mechanism.
  • the end of the first connecting portion is further provided with a notch communicating with the through hole, and the second shaft portion of the profiled shaft enters the through hole of the end of the first connecting portion through the notch; the lock
  • the tight structure further includes a fourth gasket sleeved on the first shaft portion, and a locking portion sleeved and welded on the outer wall of the first shaft portion of the profiled shaft, the locking portion having a locking handle, dialing
  • the locking handle drives the special-shaped shaft to rotate synchronously. After the locking handle is pulled away from the notch by a certain angle, the locking handle is engaged with the engaging portion of the second connecting portion.
  • the locking handle has a "U" shape
  • the locking handle comprises a curved section and two straight sections, wherein a distance between the two open ends of the curved section is greater than a distance between the two straight sections
  • the mating portion of the second connecting portion includes a first side and a second side parallel to each other, and an arcuate surface for connecting the first side and the second side, the distance between the two ends of the curved surface being greater than the first side a distance from the second side, and a distance between the ends of the curved surface is less than a distance between the two open ends of the curved section of the locking handle.
  • the connecting mechanism is characterized in that: the connecting mechanism comprises the first connecting portion, the locking mechanism and the second connecting portion, wherein the second connecting portion comprises a first connecting rod, a second connecting rod, and a third connecting portion a four-link structure of the connecting rod and the fourth connecting rod, wherein the first end of the first connecting rod is the leading end of the second connecting portion.
  • the connecting mechanism further includes a guiding mechanism
  • the guiding mechanism includes a guiding bracket, and two guiding column tubes respectively fixed on the guiding bracket and parallel to the fourth connecting rod, each of the guiding columns
  • the guide tube is slidably fitted with a guide plunger.
  • the portion of the guiding plunger that is slidingly engaged with the inner wall of the guiding column tube is made of a powder metallurgical wear-resistant material; and the guiding column tube is provided with a grease for reducing the friction between the guiding plunger and the inner wall of the guiding column tube.
  • the connecting assembly is fixed on the vehicle body, and includes a tread plate, wherein the connecting assembly further includes the connecting mechanism; the first end of the connecting portion of the connecting mechanism and the sliding door of the vehicle The free end of the fourth link is fixed to the tread plate.
  • the first connecting portion is of an "L" type, including a vertical segment and a horizontal segment.
  • the working method of the locking mechanism is characterized in that the locking method comprises: inserting a second shaft portion of the profiled shaft through the notch into a through hole of an end of the first connecting portion;
  • the unlocking method of the locking mechanism includes:
  • the second shaft portion of the profiled shaft exits the through hole of the end of the first connecting portion through the notch.
  • the beneficial effects of the present invention are that the axial clearance and the radial clearance of the locking mechanism of the present invention can effectively absorb the Z-direction movement and the Y-direction movement of the sliding door mentioned in the background art, especially the Z-direction.
  • Mobile which can replace the weight and cost of the universal joint connector, has wide application value; the locking mechanism has a simple structure, small size, light weight, low cost, high reliability and flexibility.
  • Sexuality the realization of the process of the single, easy to disassemble, easy to maintain, has a wide range of promotion and application significance.
  • Fig. 1 is a schematic view showing the structure of an automatic stepping device in the prior art.
  • Fig. 2 is a schematic view showing the structure of the locking mechanism of the present invention.
  • Figure 3 shows an exploded schematic view of the locking mechanism shown in Figure 2.
  • Fig. 4 is a view showing the structure of the profiled shaft welded with the locking portion shown in Fig. 3.
  • Figure 5 shows a schematic cross-sectional view of the locking mechanism shown in Figure 2.
  • Fig. 6 is a view showing the structure of the locking handle shown in Figs. 2 to 4.
  • Fig. 7 is a view showing the structure of a fitting portion of the first link of the second connecting portion which is engaged with the locking handle shown in Fig. 6.
  • Figure 8 shows an exploded view of the step of locking using a locking handle, wherein Figure 8a shows the locking handle
  • FIG. 8b is a schematic view showing the locking handle starting to rotate in the direction of the arrow P
  • FIG. 8c is a schematic view showing the locking handle being rotated to the locking position and being engaged with the mating portion of the first link; .
  • Figure 9 shows the working position of the connecting assembly of the present invention in the vehicle state.
  • Fig. 10 is a view showing the structure of the connecting assembly shown in Fig. 9.
  • Fig. 11 is a view showing the structure of the first connecting portion, the second connecting portion, and the guiding mechanism shown in Fig. 10, and also showing the connection relationship between the second connecting portion and the guiding mechanism and the tread plate, respectively.
  • Fig. 12 is a view showing the structure of the first connecting portion shown in Figs. 9 to 11 . detailed description
  • FIG. 2 is a schematic structural view of the locking mechanism 103 of the present invention.
  • the locking mechanism 103 is configured to connect the first connecting portion 102 and the second connecting portion, and the locking mechanism 103 includes The profiled shaft 202, the first spacer 203 and the second spacer 204. specifically:
  • the second connecting portion is a four-link structure including a first link 105, a second link 107, a third link 109, and a fourth link 108, and the first link 105
  • the leading end of the second connecting portion is a first end, and each of the connecting rods 105, 107, 109, 108 is rotatably connected by a pin.
  • the profiled shaft 202 is sequentially divided into a first shaft portion (not shown), a second shaft portion 2023, and a third by a flange 2011 and a step surface 2022 which are circumferentially disposed on an outer wall thereof. Shaft portion 2024.
  • the locking mechanism has an axial gap. Specifically, the end of the first connecting portion 102 and the first end of the first connecting rod 105 are respectively provided with a through hole, and the end of the first connecting portion 102 and the first pad
  • the first end of the first link 105 and the second spacer 204 are gap-fitted with each other and sequentially sleeved on the second shaft portion 2023; the third shaft portion 2024 is sequentially sleeved with the third portion a spacer 205 and a nut 206, the third spacer 205 being screwed to the nut 206 on the third shaft portion 2024 • I ⁇ is on the step surface 2022.
  • the total length of the end of the first connecting portion 102, the first pad 203, the first end of the first connecting rod 105, and the second spacer 204 along the axial direction of the profiled shaft 202 is l.l ⁇ 1.2mm; the first gasket 203 and the second gasket 204 are both made of a soft wear resistant material.
  • the soft wear resistant material is preferably a nylon material.
  • the locking mechanism further has a radial gap, specifically: the outer wall of the second shaft portion 2023 and the inner wall of the through hole 10211 of the end of the first connecting portion 102, the inner wall of the first gasket 203, the first The inner wall of the through hole of the first end of the connecting rod 105 and the inner wall of the second spacer 204 are clearance-fitted.
  • the through hole 10211 of the end of the first connecting portion 102 and The through holes of the first end of the first link 105 are the same circular through holes
  • the second shaft portion 2023 has a cylindrical shape with a bottom diameter smaller than the diameter of the circular through holes.
  • the second shaft portion 2023 further has two chord faces symmetrical with respect to the axis of the second shaft portion 2023 to adjust the radial gap.
  • the gap between the outer wall of the second shaft portion 2023 and the inner wall of the through hole 10211 of the end of the first connecting portion 102, and the gap between the inner wall of the first gasket 203 and the first connection preferably satisfies 0.2 to 0.5 mm.
  • the connecting mechanism in an embodiment of the present invention includes the first connecting portion 102, the locking mechanism 103, and the second connecting portion.
  • the end of the first connecting portion 102 and the leading end of the first link 105 are detachably connected by the locking mechanism 103. specifically:
  • the end of the first connecting portion 102 is further provided with a notch 10212 communicating with the through hole 10211, and the second shaft portion 2023 of the profiled shaft 202 passes the The notch 10212 enters the through hole 10211 at the end of the first connecting portion 102;
  • the locking structure further includes a fourth spacer 207 sleeved on the first shaft portion, and the first sleeve sleeved and welded to the profiled shaft 202 a locking portion 201 on the outer wall of the shaft portion, the locking portion 201 has a locking handle 2011, and the locking handle 2011 is driven to drive the shaped shaft 202 to rotate synchronously, and the locking handle 2011 is toggled to offset the gap 10212.
  • the locking handle 2011 is engaged with the mating portion of the second connecting portion, and the engaging portion is disposed on the first link 105.
  • the clamping fit of the locking handle 2011 and the mating portion can be achieved by the following structure: the locking handle The hand 2011 is in a "U" shape, and the locking handle 2011 includes a curved section 20111 and two straight sections 20112, wherein the distance between the two open ends of the curved section 20111 is greater than the distance between the two straight sections 20112, each The free end of the straight line segment 20111 is first gathered inward and then lifted outward.
  • the mating portion includes a first side surface 1052 and a second side surface (not shown) that are parallel to each other, and a curved surface 1051 for connecting the first side surface 1052 and the second side surface, the distance between the two ends of the curved surface 1051
  • the distance between the first side surface 1052 and the second side surface is greater than the distance between the two ends of the curved surface 1011 of the locking handle 2011.
  • Appropriate adjustment of the specific size can be achieved: When the locking handle 2011 is engaged into the mating portion, the clamping force of 20N or less is required, and at the same time, the locking force of the locking engagement handle 2011 and the fitting portion needs to be less than or equal to 30N. .
  • the locking method and the unlocking method of the above-described locking mechanism 103 will be described with reference to FIG.
  • the locking method of the locking structure comprises the following steps:
  • Step 11 The second shaft portion 2023 of the profiled shaft 202 is inserted into the through hole 10211 of the end of the first connecting portion 102 through the notch 10212;
  • Step 12 Toggle the locking handle 2011 to drive the shaped shaft 202 to rotate synchronously;
  • Step 13 After the locking handle 2011 deviates from the notch 10212 by a certain angle, an external force is applied to the locking handle 2011 to engage with the engaging portion of the second connecting portion.
  • the above locking method of the locking mechanism 103 includes the following steps:
  • Step 21 applying an external force to the locking handle 2011 to disengage the locking handle 2011 from the mating portion of the second connecting portion;
  • Step 22 Toggle the locking handle 2011 to drive the shaped shaft 202 to rotate synchronously;
  • Step 23 When the locking handle 2011 is in line with the notch 10212, the second shaft portion 2023 of the profiled shaft 202 is withdrawn from the first connecting portion through the notch 10212.
  • the connecting mechanism further includes a guiding mechanism
  • the guiding mechanism includes a guiding bracket 110, and two guiding column tubes 112 respectively fixed on the guiding bracket 110 and parallel to the fourth connecting rod, each of the A guide plunger is slidably fitted in the guide post tube 112.
  • the portion of the guiding plunger that is slidingly engaged with the inner wall of the guiding column tube 112 is made of powder metallurgy wear-resistant material, and the specific requirements are: radial crushing strength > 250 MPa; surface hardness HB50-100; oil content >18%; The content meets the requirements of GB/T 12613. "Sliding bearing rolled bearing"; the guiding column tube 112 is provided with a grease for reducing the friction between the guiding plunger and the inner wall of the guiding column tube 112.
  • Figure 9 is a view showing the working position of the connecting assembly 3 in the vehicle state according to an embodiment of the present invention, and the structure of the connecting assembly 3 will be described with reference to Figures 10 to 12: the connecting assembly 3, which passes a rear mounting bracket 104, a side mounting bracket 106 and a front mounting bracket 113 fixed to the vehicle body, the connecting assembly 3 including a tread plate 101, and the above-mentioned connecting mechanism; the first end of the first connecting portion 102 of the connecting mechanism and the vehicle
  • the sliding door 1 is fixedly connected, and the free end of the fourth link is fixedly connected with the tread plate 101, and the sliding of the sliding door 1 can be converted into the telescopic movement of the tread plate 101 by the four-link structure of the second connecting portion. .
  • the first connecting portion 102 is of the "L" type, including a vertical segment 1022 and a horizontal segment 1023, and the free end of the vertical segment 1022 as the leading end of the first connecting portion 102 is fixed to the sliding door 1
  • the free end of the horizontal section 1023 serves as the end of the first connecting portion 102.
  • the locking mechanism 103 Sufficient motion clearance is required from the upper and lower positions in order to absorb the dimensional error caused by manufacturing and motion elasticity; the length of the profiled shaft 202 must ensure that the locking mechanism 103 reliably passes or operates between the tread plate 101 and the side apron.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Flexible Shafts (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Lock And Its Accessories (AREA)

Abstract

一种锁紧机构(103)、连接机构、连接总成以及锁紧机构的工作方法,用于连接第一连接部(102)和第二连接部的锁紧机构包括异形轴(202)、第一垫片(203)和第二垫片(204);异形轴(202)由其外壁上沿圆周方向设置的凸缘(2011)和台阶面(2022)顺次划分为第一轴部、第二轴部(2023)和第三轴部(2024);第一连接部(102)的末端和第二连接部的首端均开设有通孔,第一连接部(102)的末端、第一垫片(203)、第二连接部的首端和第二垫片(204)之间间隙配合且顺次套设在第二轴部(2023)上;第三轴部(2024)上套有第三垫片(205)和螺母(206),第三垫片(205)通过螺紋配合在第三轴部(2024)上的螺母(206)抵在台阶面(2022)上;第二轴部(2023)的外壁分别与第一连接部(102)的末端的通孔(10211)内壁、第一垫片(203)的内壁孔、第二连接部的首端的通孔内壁和第二垫片(204)的内孔壁间隙配合,第一垫片(203)和第二垫片(204)均由软制耐磨材料制成。该锁紧机构结构简单、体积小巧、重量轻、成本低,具有较高的可靠性、灵活性。

Description

锁紧机构、 连接机构、 连接总成以及锁紧机构的工作方法 技术领域
本发明涉及连接装置, 尤其涉及一种锁紧机构、 连接机构、 连接总成 以及锁紧机构的工作方法。 背景技术
商用汽车的地板一般离地面高度超过 350mm, 为了便于乘客上下车方 便的需要, 一般都在滑移门上增加自动踏步装置 (伸缩式踏步板) , 当滑 移门向后移动 (开门过程) 时, 滑移门带动踏步板伸出, 当滑移门完全开 启时, 踏步板完全伸出, 乘员可以通过自动踏步板便利地上下车。
图 1示出了现有技术中的自动踏步装置的结构示意图, 如图 1所示, 自动踏步装置包括顺次连接的第一连接部 21、 第一连杆 23、 第二连杆 24、 第三连杆 25和踏步板 26 , 其中第一连接部 21的首端与滑移门固连, 末端 通过万向连接器 22 (例如, 球头万向节) 与第一连杆 23的首端配合连接, 第一连杆 23的末端与第二连杆 24的首端通过销轴可转动连接, 第二连杆 24的末端与第三连杆 25的首端通过销轴可转动连接, 第三连杆 25的末端 与踏步板 26固定连接。第一连接部 21与第一连杆 23之间采用万向连接器 22的原因是: 实际情况下, 带动自动踏步装置动作的滑移门在滑动过程中, 不仅有 X向 (即, 滑移门的滑动方向)移动、 Y向 (与 X向位于同一水平 面, 并与 X向垂直的方向 ) 移动还有 Z向 (同时与 X向和 Y向垂直的方 向) 移动, 由于第一连杆 23的末端与第二连杆 24的首端通过销轴可转动 连接, 第二连杆 24的末端与第三连杆 25的首端也通过销轴可转动连接, 所以第二连杆 24和第三连杆 25的运动可以确定为只有一个自由度, 这样 滑移门存在的 Z向移动和 Y向移动, 尤其是 Z向移动(约 6mm, 轴线角度 约 0.728° )只能通过用于连接所述第一连接部 21和第一连杆 23的万向连 接器 22来吸收。
上述自动踏步装置的问题在于: 采用万向连接器 22 , 第一, 使整个自 动踏步装置重量增加, 车辆行驶过程中震动惯性大, 噪声大且容易损坏; 第二, 成本将大幅度提高; 第三, 不易拆装。 发明内容
本发明的目的在于克服现有技术中的不足, 提供一种锁紧机构、 连接 机构、 连接总成以及锁紧机构的工作方法。
为实现上述目的, 所述锁紧机构, 用于连接第一连接部和第二连接部, 其特点是, 所述锁紧机构包括异型轴、 第一垫片和第二垫片; 其中, 所述 异型轴由其外壁上沿圓周方向设置的凸缘和台阶面顺次划分为第一轴部、 第二轴部和第三轴部;
所述第一连接部的末端以及第二连接部的首端均开设有通孔, 所述第 一连接部的末端、 第一垫片、 第二连接部的首端和第二垫片彼此之间间隙 配合且顺次套设在第二轴部上; 所述第三轴部上顺次套设有第三垫片和螺 母, 所述第三垫片通过螺纹配合在第三轴部上的螺母抵在所述台阶面上; 并且,
所述第二轴部的外壁分别与第一连接部的末端的通孔内壁、 第一垫片 的内孔壁、 第二连接部的首端的通孔内壁、 以及第二垫片的内孔壁间隙配 合, 所述第一垫片和第二垫片均由软制耐磨材料制成。
优选的是, 所述第一连接部的末端、 第一垫片、 第二连接部的首端和 第二垫片沿所述异型轴轴向方向的间隙总和为 l.l~1.2mm。
优选的是, 所述第二轴部的外壁分别与第一连接部的末端的通孔内壁 之间的间隙、 与第一垫片的内孔壁之间的间隙、 与第二连接部的首端的通 孔内壁之间的间隙、 以及与第二垫片的内孔壁之间的间隙中的最大者满足 0.2~0.5mm。
优选的是, 所述第一连接部的末端的通孔和所述第二连接部的首端的 通孔为相同的圓形通孔, 所述第二轴部呈底面直径小于所述圓形通孔的孔 径的圓柱形。
优选的是, 所述第二轴部具有关于该第二轴部的轴线对称的两个弦切 面。
优选的是, 所述第一垫片和第二垫片均为尼龙垫片。 优选的是, 所述第一连接部的末端与第二连接部的首端通过所述锁紧 机构可拆卸连接。
优选的是, 所述第一连接部的末端还设置有与所述通孔相通的缺口, 所述异型轴的第二轴部通过该缺口进入第一连接部的末端的通孔; 所述锁 紧结构还包括套设在所述第一轴部的第四垫片, 以及套设并焊接在异型轴 的第一轴部外壁上的锁紧部, 所述锁紧部具有锁紧把手, 拨动所述锁紧把 手带动异型轴同步转动, 拨动所述锁紧把手使其偏离缺口一定角度后, 所 述锁紧把手与第二连接部具有的配合部卡紧配合。
优选的是, 所述锁紧把手呈 "U" 型, 该锁紧把手包括弯曲段和两个直 线段, 其中所述弯曲段的两开口端之间的距离大于两直线段之间的距离, 所述第二连接部的配合部包括彼此平行的第一侧面和第二侧面, 以及 用于连接第一侧面和第二侧面的弧形面, 所述弧形面的两端的距离大于第 一侧面与第二侧面之间的距离, 且所述弧形面的两端之间的距离小于所述 锁紧把手的弯曲段的两开口端之间的距离。
所述连接机构, 其特点是, 所述连接机构包括所述第一连接部、 锁紧 机构和第二连接部, 所述第二连接部为包括第一连杆、 第二连杆、 第三连 杆和第四连杆的四连杆结构, 所述第一连杆的首端为所述第二连接部的首 端。
优选的是, 所述连接机构还包括导向机构, 所述导向机构包括导向支 架, 以及分别固装在导向支架上的与所述第四连杆平行的两个导向柱管, 各所述导向柱管内滑动配合有导向柱塞。
优选的是, 所述导向柱塞与导向柱管内壁滑动配合的部位采用粉末冶 金耐磨材料; 所述导向柱管内容置有用于减少导向柱塞与导向柱管内壁的 摩擦的润滑脂。
所述连接总成, 固定在车身上, 包括踏步板, 其特点是, 所述连接总 成还包括所述的连接机构; 所述连接机构的第一连接部的首端与车辆的滑 移门固连, 所述第四连杆的自由端与踏步板固连。
优选的是, 所述第一连接部呈 "L" 型, 包括竖直段和水平段。 所述锁紧机构的工作方法, 其特点是, 其锁紧方法包括, 将所述异型轴的第二轴部通过所述缺口置入所述第一连接部的末端的 通孔;
拨动所述锁紧把手带动异型轴同步转动;
当所述锁紧把手与缺口偏离一定角度后, 对所述锁紧把手施加外力, 使其与所述第二连接部的配合部卡紧配合。
优选的是, 锁紧机构的解锁方法包括,
对所述锁紧把手施加外力, 使该锁紧把手脱离所述第二连接部的配合 部;
拨动所述锁紧把手带动异型轴同步转动;
当所述锁紧把手与缺口位于同一直线上时, 将所述异型轴的第二轴部 通过所述缺口退出所述第一连接部的末端的通孔。
本发明的有益效果在于, 本发明所述的锁紧机构的轴向间隙和径向间 隙可以有效地吸收背景技术中所提到的滑移门存在的 Z 向移动和 Y 向移 动, 尤其 Z向移动, 其可代替有份量重、 成本高的万向节连接器, 具有广 泛的应用价值; 该锁紧机构的结构筒单、 体积小巧、 重量轻、 成本低, 具 有较高的可靠性、 灵活性, 实现过程筒单、 拆装方便, 便于维护, 具有广 泛的推广应用意义。
附图说明
图 1示出了现有技术中的自动踏步装置的结构示意图。
图 2示出了本发明所述的锁紧机构的结构示意图。
图 3示出了 2中所示的锁紧机构的分解示意图。
图 4示出了图 3中所示的焊接有锁紧部的异型轴的结构示意图。
图 5示出了 2中所示的锁紧机构的剖面示意图。
图 6示出了图 2至图 4中所示的锁紧把手的结构示意图。
图 7示出了第二连接部的第一连杆中与图 6中所示的锁紧把手卡紧配 合的配合部的结构示意图。
图 8示出了使用锁紧把手进行锁紧的步骤分解图, 其中图 8a为锁紧把 手位于初始位置时的示意图; 图 8b为锁紧把手沿箭头 P的方向开始转动的 示意图; 图 8c示出了锁紧把手旋转到锁定位置并与第一连杆的配合部卡紧 配合的示意图。
图 9示出了本发明所述的连接总成在整车状态下的工作位置。
图 10示出了图 9所示的连接总成的结构示意图。
图 11示出了图 10中所示的第一连接部、 第二连接部和导向机构的结 构示意图,还示出了第二连接部和导向机构分别与踏步板之间的连接关系。
图 12示出了图 9至图 11中所示的第一连接部的结构示意图。 具体实施方式
下面详细描述本发明的实施例, 所述实施例的示例在附图中示出, 其 中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功 能的元件。 下面通过参考附图描述的实施例是示例性的, 仅用于解释本发 明, 而不能解释为对本发明的限制。
图 2示出了本发明所述的锁紧机构 103的结构示意图, 如图 2所示, 锁紧机构 103 , 用于连接第一连接部 102和第二连接部, 所述锁紧机构 103 包括异型轴 202、 第一垫片 203和第二垫片 204。 具体地:
如图 10和 11所示, 所述第二连接部为包括第一连杆 105、 第二连杆 107、 第三连杆 109和第四连杆 108的四连杆结构, 第一连杆 105的首端为 第二连接部的首端, 并且各个连杆 105、 107、 109、 108两两之间分别通过 销轴可转动地连接。
参照图 3至图 5 , 所述异型轴 202由其外壁上沿圓周方向设置的凸缘 2011和台阶面 2022顺次划分为第一轴部 (未示出) 、 第二轴部 2023和第 三轴部 2024。
所述锁紧机构具有轴向间隙, 具体地: 所述第一连接部 102的末端以 及第一连杆 105的首端均开设有通孔, 所述第一连接部 102的末端、 第一 垫片 203、 第一连杆 105的首端和第二垫片 204彼此之间间隙配合且顺次 套设在第二轴部 2023上; 所述第三轴部 2024上顺次套设有第三垫片 205 和螺母 206,所述第三垫片 205通过螺纹配合在第三轴部 2024上的螺母 206 •I氐在所述台阶面 2022上。 特别地, 所述第一连接部 102的末端、 第一垫片 203、第一连杆 105的首端和第二垫片 204沿所述异型轴 202轴向方向的间 隙总和为 l .l~1.2mm; 所述第一垫片 203和第二垫片 204均由软制耐磨材 料制成, 在本发明的一实施例中软制耐磨材料优选为尼龙材料。
所述锁紧机构还具有径向间隙, 具体地: 所述第二轴部 2023的外壁分 别与第一连接部 102的末端的通孔 10211 内壁、 第一垫片 203的内孔壁、 第一连杆 105的首端的通孔内壁、 以及第二垫片 204的内孔壁间隙配合, 为了产生此径向间隙, 采用下述的结构: 所述第一连接部 102的末端的通 孔 10211和所述第一连杆 105的首端的通孔为相同的圓形通孔, 所述第二 轴部 2023呈底面直径小于所述圓形通孔的孔径的圓柱形。 特别地, 在上述 结构的基础上, 所述第二轴部 2023还具有关于该第二轴部 2023的轴线对 称的两个弦切面, 以调整上述径向间隙。
特别地,所述第二轴部 2023的外壁分别与第一连接部 102的末端的通 孔 10211 内壁之间的间隙、 与第一垫片 203的内孔壁之间的间隙、 与第一 连杆 105的首端的通孔内壁之间的间隙、 以及与第二垫片 204的内孔壁之 间的间隙中的最大者优选地满足 0.2~0.5mm。
在本发明的一实施例中的连接机构包括上述第一连接部 102、 锁紧机 构 103和第二连接部。
为了方便连接机构的拆卸,所述第一连接部 102的末端与第一连杆 105 的首端通过所述锁紧机构 103可拆卸连接。 具体地:
如图 2、 3、 4、 6和 7所示, 所述第一连接部 102的末端还设置有与所 述通孔 10211相通的缺口 10212, 所述异型轴 202的第二轴部 2023通过该 缺口 10212进入第一连接部 102的末端的通孔 10211 ; 所述锁紧结构还包 括套设在所述第一轴部的第四垫片 207 , 以及套设并焊接在异型轴 202 的 第一轴部外壁上的锁紧部 201 , 所述锁紧部 201具有锁紧把手 2011 , 拨动 所述锁紧把手 2011带动异型轴 202同步转动, 拨动所述锁紧把手 2011使 其偏离缺口 10212—定角度后,所述锁紧把手 2011与第二连接部具有的配 合部卡紧配合, 所述配合部设置在第一连杆 105上。
所述锁紧把手 2011与配合部的卡紧配合可通过下述结构实现:锁紧把 手 2011呈" U"型,该锁紧把手 2011包括弯曲段 20111和两个直线段 20112, 其中所述弯曲段 20111的两开口端之间的距离大于两直线段 20112之间的 距离, 各所述直线段 20111 的自由端先向内侧收拢后再向外侧翘起。 所述 配合部包括彼此平行的第一侧面 1052和第二侧面(未示出), 以及用于连 接第一侧面 1052和第二侧面的弧形面 1051 , 所述弧形面 1051的两端的距 离大于第一侧面 1052与第二侧面之间的距离, 且所述弧形面 1051的两端 之间的距离小于所述锁紧把手 2011 的弯曲段 20111 的两开口端之间的距 离。 适当调整具体的尺寸, 可以实现: 将锁紧把手 2011卡入配合部时需要 小于等于 20N的卡入力,同时将卡紧配合的锁紧把手 2011与配合部分开时 需要小于等于 30N的拔出力。
参照图 8说明上述锁紧机构 103的锁紧方法和解锁方法。 锁紧结构的 锁紧方法包括以下几个步骤:
步骤 11 : 将所述异型轴 202的第二轴部 2023通过所述缺口 10212置 入所述第一连接部 102的末端的通孔 10211 ;
步骤 12: 拨动所述锁紧把手 2011带动异型轴 202同步转动;
步骤 13: 当所述锁紧把手 2011与缺口 10212偏离一定角度后, 对所 述锁紧把手 2011施加外力, 使其与所述第二连接部的配合部卡紧配合。
上述锁紧机构 103解锁方法包括以下几个步骤:
步骤 21 : 对所述锁紧把手 2011施加外力, 使该锁紧把手 2011脱离所 述第二连接部的配合部;
步骤 22: 拨动所述锁紧把手 2011带动异型轴 202同步转动;
步骤 23: 当所述锁紧把手 2011与缺口 10212位于同一直线上时, 将 所述异型轴 202的第二轴部 2023通过所述缺口 10212退出所述第一连接部
102的末端的通孔 10211。
进一步地, 所述连接机构还包括导向机构, 所述导向机构包括导向支 架 110, 以及分别固装在导向支架 110上的与所述第四连杆平行的两个导 向柱管 112, 各所述导向柱管 112 内滑动配合有导向柱塞。 特别地, 所述 导向柱塞与导向柱管 112 内壁滑动配合的部位采用粉末冶金耐磨材料, 具 体要求: 径向压溃强度 > 250MPa; 表面硬度 HB50-100; 含油率 >18%; 其 他内容符合 GB/T 12613. 《滑动轴承 卷制轴承》要求; 所述导向柱管 112 内容置有用于减少导向柱塞与导向柱管 112内壁的摩擦的润滑脂。
图 9示出了本发明的一实施例中所述的连接总成 3在整车状态下的工 作位置, 结合图 10至 12说明连接总成 3的结构: 所述连接总成 3 , 其通 过后安装支架 104, 侧安装支架 106和前安装支架 113 固定在车身上, 该 连接总成 3 包括踏步板 101 , 以及上述的连接机构; 所述连接机构的第一 连接部 102的首端与车辆的滑移门 1 固连, 所述第四连杆的自由端与踏步 板 101 固连, 通过第二连接部的四连杆结构可以将滑移门 1的滑动转换为 踏步板 101的伸缩运动。 特别地, 所述第一连接部 102呈 "L" 型, 包括竖 直段 1022和水平段 1023 , 作为所述第一连接部 102的首端的竖直段 1022 的自由端与滑移门 1 固连; 所述水平段 1023 的自由端作为该第一连接部 102的末端。
在实施过程中, 需要注意的是, 由于连接总成 3在工作过程中与滑移 门 1下裙板 2的间隙受到空间布置的限制,不可能采用大尺寸的连接结构, 同时锁紧机构 103距上下位置需要留有足够的运动间隙, 以备吸收制造和 运动弹性产生的尺寸误差; 异型轴 202的长度必须保证锁紧机构 103在踏 步板 101和侧围裙板中间可靠通过或运行。
以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领域的 普通技术人员来说, 在不脱离本发明原理的前提下, 还可以做出若干改进 和润饰, 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1.一种锁紧机构, 用于连接第一连接部和第二连接部, 其特征在于: 所述锁紧机构包括异型轴、 第一垫片和第二垫片; 其中, 所述异型轴由其 外壁上沿圓周方向设置的凸缘和台阶面顺次划分为第一轴部、 第二轴部和 第三轴部;
所述第一连接部的末端以及第二连接部的首端均开设有通孔, 所述第 一连接部的末端、 第一垫片、 第二连接部的首端和第二垫片彼此之间间隙 配合且顺次套设在第二轴部上; 所述第三轴部上顺次套设有第三垫片和螺 母, 所述第三垫片通过螺纹配合在第三轴部上的螺母抵在所述台阶面上; 并且,
所述第二轴部的外壁分别与第一连接部的末端的通孔内壁、 第一垫片 的内孔壁、 第二连接部的首端的通孔内壁、 以及第二垫片的内孔壁间隙配 合, 所述第一垫片和第二垫片均由软制耐磨材料制成。
2. 根据权利要求 1所述的锁紧机构, 其特征在于: 所述第一连接部的 末端、 第一垫片、 第二连接部的首端和第二垫片沿所述异型轴轴向方向的 间隙总和为 l.l~1.2mm。
3. 根据权利要求 1所述的锁紧机构, 其特征在于: 所述第二轴部的外 壁分别与第一连接部的末端的通孔内壁之间的间隙、 与第一垫片的内孔壁 之间的间隙、 与第二连接部的首端的通孔内壁之间的间隙、 以及与第二垫 片的内孔壁之间的间隙中的最大者满足 0.2~0.5mm。
4.根据权利要求 1所述的锁紧机构, 其特征在于: 所述第一连接部的 末端的通孔和所述第二连接部的首端的通孔为相同的圓形通孔, 所述第二 轴部呈底面直径小于所述圓形通孔的孔径的圓柱形。
5.根据权利要求 4所述的锁紧机构, 其特征在于: 所述第二轴部具有 关于该第二轴部的轴线对称的两个弦切面。
6.根据权利要求 1所述的锁紧机构, 其特征在于: 所述第一垫片和第 二垫片均为尼龙垫片。
7.根据权利要求 1所述的锁紧机构, 其特征在于: 所述第一连接部的 末端与第二连接部的首端通过所述锁紧机构可拆卸连接。
8.根据权利要求 7所述的锁紧机构, 其特征在于: 所述第一连接部的 末端还设置有与所述通孔相通的缺口, 所述异型轴的第二轴部通过该缺口 进入第一连接部的末端的通孔; 所述锁紧结构还包括套设在所述第一轴部 的第四垫片, 以及套设并焊接在异型轴的第一轴部外壁上的锁紧部, 所述 锁紧部具有锁紧把手, 拨动所述锁紧把手带动异型轴同步转动, 拨动所述 锁紧把手使其偏离缺口一定角度后, 所述锁紧把手与第二连接部具有的配 合部卡紧配合。
9.根据权利要求 8所述的锁紧机构,其特征在于:所述锁紧把手呈 "U" 型, 该锁紧把手包括弯曲段和两个直线段, 其中所述弯曲段的两开口端之 间的距离大于两直线段之间的距离, 各所述直线段的自由端先向内侧收拢 后再向外侧翘起;
所述第二连接部的配合部包括彼此平行的第一侧面和第二侧面, 以及 用于连接第一侧面和第二侧面的弧形面, 所述弧形面的两端的距离大于第 一侧面与第二侧面之间的距离, 且所述弧形面的两端之间的距离小于所述 锁紧把手的弯曲段的两开口端之间的距离。
10.一种连接机构, 其特征在于: 所述连接机构包括如权利要求 1所述 的锁紧机构, 所述连接机构还包括第一连接部和第二连接部, 所述第二连 接部为包括第一连杆、 第二连杆、 第三连杆和第四连杆的四连杆结构, 所 述第一连杆的首端为所述第二连接部的首端。
11.根据权利要求 10所述的连接机构, 其特征在于: 所述连接机构还 包括导向机构, 所述导向机构包括导向支架, 以及分别固装在导向支架上 的与所述第四连杆平行的两个导向柱管, 各所述导向柱管内滑动配合有导 向柱塞。
12. 根据权利要求 11所述的连接机构, 其特征在于: 所述导向柱塞与 导向柱管内壁滑动配合的部位采用粉末冶金耐磨材料; 所述导向柱管内容 置有用于减少导向柱塞与导向柱管内壁的摩擦的润滑脂。
13.—种连接总成, 固定在车身上, 包括踏步板, 其特征在于: 所述连 接总成还包括如权利要求 10所述的连接机构; 所述连接机构的第一连接部 的首端与车辆的滑移门固连, 所述第四连杆的自由端与踏步板固连。
14.根据权利要求 13所述的连接总成, 其特征在于: 所述第一连接部 呈 "L" 型, 包括竖直段和水平段。
15.—种用于权利要求 9所述的锁紧机构的工作方法, 其特征在于: 其 锁紧方法包括,
将所述异型轴的第二轴部通过所述缺口置入所述第一连接部的末端的 通孔;
拨动所述锁紧把手带动异型轴同步转动;
当所述锁紧把手与缺口偏离一定角度后, 对所述锁紧把手施加外力, 使其与所述第二连接部的配合部卡紧配合。
16.根据权利要求 15所述的锁紧机构的工作方法, 其特征在于: 其解 锁方法包括,
对所述锁紧把手施加外力, 使该锁紧把手脱离所述第二连接部的配合 部;
拨动所述锁紧把手带动异型轴同步转动;
当所述锁紧把手与缺口位于同一直线上时, 将所述异型轴的第二轴部 通过所述缺口退出所述第一连接部的末端的通孔。
PCT/CN2013/082930 2013-04-17 2013-09-04 锁紧机构、连接机构、连接总成以及锁紧机构的工作方法 WO2014169551A1 (zh)

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