WO2021138967A1 - 摩擦片组与旋转阻尼器 - Google Patents

摩擦片组与旋转阻尼器 Download PDF

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Publication number
WO2021138967A1
WO2021138967A1 PCT/CN2020/075682 CN2020075682W WO2021138967A1 WO 2021138967 A1 WO2021138967 A1 WO 2021138967A1 CN 2020075682 W CN2020075682 W CN 2020075682W WO 2021138967 A1 WO2021138967 A1 WO 2021138967A1
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WO
WIPO (PCT)
Prior art keywords
friction plate
abutting surface
friction
passive
plate body
Prior art date
Application number
PCT/CN2020/075682
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English (en)
French (fr)
Inventor
吴敏
Original Assignee
太仓卡兰平汽车零部件有限公司
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.)
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Publication date
Application filed by 太仓卡兰平汽车零部件有限公司 filed Critical 太仓卡兰平汽车零部件有限公司
Priority to JP2022540602A priority Critical patent/JP2023521265A/ja
Publication of WO2021138967A1 publication Critical patent/WO2021138967A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/548—Trunk lids

Definitions

  • the invention relates to a friction plate group and a rotary damper.
  • the electric tailgate technology is the latest technology in the trunk tailgate of current passenger cars, especially SUV and MPV models.
  • the driver can press the vehicle tailgate to open the key, remote control the car key or use hand or arbitrarily in the corresponding area of the tailgate.
  • Object-sensing operation a device that controls the opening and closing of the tailgate.
  • the electric tailgate also has functions such as intelligent anti-pinch and high memory functions. It has the advantages of convenient control and strong practicability, so it is widely used in C-class luxury cars and B-class vehicles, such as Land Rover Aurora, Range Rover series, Ford Escape, Volvo XC70 and other SUV models.
  • the current technology generally relies solely on the motor in the electric strut to overcome the system resistance and The door is restarted, but in actual application, the motor cannot guarantee that the tailgate can hover at any angle, especially under slopes, snow loads, etc.; or add hydraulic dampers in the system, but the hydraulic dampers are affected by the environment
  • the temperature change affects the damping effect and the hovering of the tailgate; it is difficult to guarantee the sealing performance of the hydraulic damper, and if there is oil leakage, it will affect the stability of the system; the manufacturing cost of the hydraulic damper is high and it is not easy to realize mass production.
  • the existing rotary damper has the following technical problems: the damper used to realize the hovering of the tailgate at any angle is in the front of the electric tailgate strut of the automobile.
  • the damping value generated during the reverse rotation and the reverse rotation is basically the same, so that the load in one direction when the motor is driving the tailgate is relatively large when the tailgate is opened or closed.
  • the large load of the motor requires higher requirements for the motor.
  • Use some special parts In actual use, it is not necessary for the motor to drive the trunk tailgate to have the same load during the opening and closing process. Therefore, the conventional rotary damper causes the motor to have the same load during the opening and closing of the tailgate of the trunk, which is a waste.
  • One of the objectives of the present invention is to overcome the deficiencies in the prior art and provide a friction plate and a rotary damper with different damping values for forward rotation and reverse rotation.
  • a friction plate group is characterized in that the friction plate group is arranged in an axially adjustable height.
  • the friction plate group can be configured to rotate in a forward direction and a reverse rotation direction; before and after the friction plate group rotates at a selected angle, it is arranged at different heights.
  • the friction plate set includes a first friction plate and a second friction plate; the first friction plate and the second friction plate are distributed along the axial direction; the first friction plate and the The second friction plate can be relatively rotated, and before and after the relative rotation of the selected angle is completed, the friction plate group is arranged at different heights.
  • the first friction plate and the second friction plate abut against each other and make the first friction plate And the second friction plate is relatively movable in the axial direction.
  • At least one of the first friction plate and the second friction plate is configured to be rotatable forward and reverse; the first friction plate and the second friction plate When at least one of them rotates in the forward direction and can rotate in the reverse direction, the interaction between the two causes the friction plate group to have different axial heights.
  • the first friction plate includes a first friction plate body
  • the second friction plate includes a second friction plate body; the relative rotation process of the first friction plate and the second friction plate Wherein, the first friction plate and the second friction plate abut against each other and are arranged such that the first friction plate body and the second friction plate body are relatively movable in the axial direction.
  • the first friction plate has a first abutting surface
  • the second friction plate has a second abutting surface
  • the first abutting surface is in contact with the second abutting surface
  • At least one of the first abutting surface and the second abutting surface has a height change along the circumferential direction.
  • the first friction plate includes a first friction plate body and a first abutting surface; at least a part of the first abutting surface protrudes from the first friction plate body in the axial direction; There are at least two positions on the first abutting surface, and the heights of the two positions protruding from the first friction plate body in the axial direction are different.
  • the first abutting surface gradually protrudes from the first friction plate body in a circumferential direction.
  • the first abutting surface extends smoothly along the circumferential direction.
  • the first abutting surface is an inclined surface along the circumferential direction.
  • the first friction lining body is provided with a first through hole that penetrates the first friction lining body in the axial direction, and the first protrusion and the first abutting surface extend in the radial direction. It is arranged on one side of the first through hole.
  • At least two first protrusions are further provided on the first friction plate body, and the two first protrusions are provided on both sides of the first abutting surface along the circumferential direction;
  • the first protrusion protrudes axially from the first friction plate body and the first abutting surface.
  • the second friction plate includes a second friction plate body, the second friction plate body is provided with a second protrusion, and the second protrusion protrudes from the first friction plate in the axial direction.
  • the first abutting surface is provided with multiple sections along the circumferential direction; the second abutting surface is provided with multiple sections; each second abutting surface is matched with one of the first abutting surfaces .
  • the friction plate set further includes a limit structure, and the limit structure is used to limit the relative rotation angle of the first friction plate and the second friction plate.
  • the limiting structure includes a first bump and a second bump; the number of the first bumps is more than two and they are arranged at intervals in the circumferential direction, and the second bumps are inserted Between the two first protrusions and can move in the circumferential direction between the two first protrusions; the two first protrusions blocking the second protrusions can restrict The angle of rotation of the second bump; one of the first bump and the second bump is arranged on the first friction plate, and the other is arranged on the second friction plate.
  • one of the first friction plate and the second friction plate is provided with a step, and the other is sleeved on the step.
  • the second friction plate includes a second friction plate body and the step; the step protrudes from the first friction plate body in the axial direction, and the first friction plate is provided with a through The first friction plate body and the second through hole of the step.
  • the step is provided with internal teeth, and the internal teeth are used to cooperate with the drive shaft to connect the first friction plate with the drive shaft.
  • a rotary damper characterized in that the rotary damper includes:
  • the first passive friction plate
  • the second passive friction plate
  • the first passive friction plate and the second passive friction plate are respectively arranged on both sides of the friction plate; the first passive friction plate is in contact with the first friction plate, and the second The passive friction plate is in contact with the second friction plate.
  • the rotary damper further includes a housing, an elastic element, and a fixed ring; the housing is provided with a lumen; the elastic element, the second passive friction plate, the friction plate, and the first passive friction plate And the fixed ring are arranged in the axial direction in sequence and arranged in the lumen; the fixed ring is connected with the housing to limit the elastic element, the first passive friction plate, the friction plate and the second passive friction plate in the Mentioned in the lumen.
  • the friction plate group of the present invention has a variable height along the axial direction, and has different heights during forward and reverse rotation. Therefore, when rotating forward and reversely, it is in contact with the first passive friction plate and the second passive friction plate. The friction is different, so different damping can be produced.
  • a rotary damper is used on the tailgate of the trunk, the load of the motor is different during forward and reverse rotation. Therefore, the load of the motor is different during forward and reverse rotation, which requires the performance of the motor. Reduce, you can save costs.
  • FIG. 1 is a schematic diagram of the structure and use state of the rotary damper in Embodiment 1 of the present invention.
  • Fig. 2 is a schematic diagram of the structure and use state of the rotary damper in Fig. 1 viewed from another angle.
  • Fig. 3 is an exploded view of the structure and use state of the rotary damper in embodiment 1 of the present invention.
  • Figure 4 is an exploded schematic diagram of the structure of the friction plate assembly in Embodiment 1 of the present invention.
  • Fig. 5 is a schematic structural view of the structure of the friction plate group in Fig. 4 viewed from another angle.
  • FIG. 6 is a schematic diagram of the structure of the first friction plate in Embodiment 1 of the present invention.
  • FIG. 7 is a schematic diagram of the structure of the second friction plate in Embodiment 1 of the present invention.
  • FIG. 8 is a schematic diagram of the comparison of the axial height of the friction plate group in the embodiment 1 of the present invention in different states.
  • Fig. 9 is a schematic structural diagram of a rotary damper in Embodiment 2 of the present invention.
  • the rotary damper 100 includes a housing 110, an elastic element 120, a first passive friction plate 131, a friction plate group 140, a second passive friction plate 132 and a second fixed ring 160.
  • the housing 110 is a round tube and is provided with a lumen 111.
  • the housing 110 is provided with a guide groove 112, and the guide groove 112 extends in the axial direction.
  • the guide groove 112 communicates with the lumen 111.
  • a plurality of guide grooves 112 are provided along the circumferential direction, and the specific number of the guide grooves 112 can be determined according to actual conditions. In the example shown in the figure, the number of guide grooves 112 is five.
  • the inner wall of the housing 110 is provided with a blocking wall 113.
  • the blocking wall 113 protrudes from the inner wall of the housing 110.
  • the blocking wall 113 is used for blocking, abutting and supporting the elastic element 120.
  • the blocking wall 113 may be determined according to the structure of the elastic element 120. In the example shown in the figure, the blocking wall 113 is arranged in a circle along the circumferential direction, and the blocking wall 113 has a circular ring shape.
  • the housing 110 is an integrally formed part.
  • the first fixed ring 170, the elastic element 120, the first passive friction plate 131, the friction plate group 140, the second passive friction plate 132, and the second fixed ring 160 are sequentially arranged in the lumen 111 along the axial direction. .
  • the first fixing ring 170 and the second fixing ring 160 are respectively arranged on the outermost sides and fixedly connected to the housing 110.
  • the first fixing ring 170 and the second fixing ring 160 jointly connect the elastic element 120, the first passive friction plate 131, The friction plate group 140 and the second passive friction plate 132 are confined in the lumen 111.
  • the elastic element 120 is disposed in the lumen 111 for providing elastic force.
  • the elastic element 120 can be a wave spring, a disc spring, a cylindrical spring, and a wire spring. In the example shown in the figure, the elastic element 120 is a wave spring.
  • the elastic element 120 is supported on the second fixing ring 170.
  • the first passive friction plate 131 and the second passive friction plate 132 are arranged on the two axial sides of the friction plate group 140 along the axial direction, and are in contact with the friction plate group 140 respectively.
  • the friction plate group 140 includes a first friction plate 141 and a second friction plate 151.
  • the first friction plate 141 includes a first friction plate body 142 and a first abutting surface 143.
  • the first friction plate body 142 is annular and has a first through hole 144.
  • the first abutting surface 143 is disposed on one side in the radial direction of the first through hole 144.
  • the first abutting surface 143 protrudes from the first friction plate body 142 in the axial direction.
  • the first abutting surface 143 has at least two positions, and the heights of the two positions protruding from the first friction plate body 142 in the axial direction are different.
  • the first abutting surface 143 is gradually arranged along the circumferential direction. More preferably, the first abutting surface 143 smoothly extends in the circumferential direction. In the example shown in the figure, the first abutting surface 143 is an inclined surface along the circumferential direction. In this embodiment, along the circumferential direction, the height of the first abutting surface 143 protruding from the first friction plate body 142 is different at various positions along the circumferential direction. As shown in the figure, the first position 148 protrudes from the first friction plate. The height of the sheet body 142 is smaller than the height of the first friction sheet body 142 at the second position 149.
  • the first abutting surface 143 is provided with multiple sections, and the plurality of first abutting surfaces 143 are distributed at intervals along the circumferential direction.
  • the first abutting surface 143 is used to cooperate with the second abutting surface 157, and the specific number of the first abutting surface 143 is determined according to the relative connection between the first friction plate 141 and the second friction plate 151 that can be stably maintained.
  • the first abutting surface 143 is provided with three sections, which are distributed at intervals along the circumferential direction.
  • At least two first bumps 146 are provided on the first friction plate body 142. Along the circumferential direction, a first bump 146 is provided on each side of the first abutting surface 143.
  • the first protrusion 146 protrudes from the first friction plate body 142 and the first abutting surface 143 in the axial direction. Along the radial direction, the first bump 146 is located on the side of the first through hole 144. According to the present invention, at least a section of the first abutting surface 143 is provided with first bumps 146 on both sides. In the preferred example shown in the figure, a total of three first bumps 146 are provided. The three first protrusions 146 are distributed along the circumferential direction, so that each section of the first abutting surface 143 is provided with first protrusions 146 on both sides of the circumferential direction.
  • the second friction plate 151 includes a second friction plate body 152.
  • a step 154 is provided on the second friction plate body 152.
  • the step 154 protrudes from the second friction plate body 152 in the axial direction.
  • the second through hole 153 penetrates the second friction plate body 152 and the step 154. That is, the second friction plate body 152 has a circular ring shape, and the step 154 has a circular tube shape.
  • the inner wall of the step 154 is provided with internal teeth 155.
  • the internal teeth 155 are used for cooperating with a driving shaft (not shown in the figure) to connect the second friction plate 151 and the driving shaft so that the two are linked.
  • the second friction plate 151 can be driven to rotate forward and backward through the drive shaft.
  • a second bump 156 is provided on one side of the step 154.
  • the second protrusion 156 protrudes from the second friction plate body 152 in the axial direction.
  • the end surface of the end of the second protrusion 156 away from the second friction plate body 151 is the second abutting surface 157.
  • the number of the second bumps 156 is multiple, which are distributed along the circumferential direction.
  • the number of the second bumps 156 is determined according to the number of the first abutting surfaces 143.
  • the second abutting surface 157 on each second bump 156 abuts on a section of the first abutting surface 143.
  • the first friction plate 141 and the second friction plate 151 form a friction plate group 140 with adjustable axial height.
  • the step 154 on the second friction plate body 152 penetrates into the first through hole 144, and the second friction plate body 152 is sleeved on the step 144.
  • the second abutting surface 157 of the second bump 156 abuts on the first abutting surface 143, and the two are in contact.
  • the first friction plate body 142 and the second friction plate body 152 are relatively rotatable.
  • the first protrusion 146 blocks the second protrusion 156 in the circumferential direction, which can restrict
  • the rotation angle of the second protrusion 156 also defines the relative rotation angle of the first friction plate 141 and the second friction plate 151; the first friction plate body 142 and the second friction plate body 152 can also be rotated in conjunction.
  • the friction plate group 140 on the left and the friction plate group 140 on the right are in two states after the first friction plate 141 and the second friction plate 142 are relatively rotated by a certain angle.
  • the second abutting surface 157 of the second protrusion 156 abuts at the first position 148, and the axial height of the friction plate group 140 is H1.
  • the second abutting surface 157 of the second protrusion 156 abuts at the second position 149, and the axial height of the friction plate group 140 is H2.
  • H2 is greater than H1.
  • the mutual distance of the three first protrusions 146 defines the moving distance of the second protrusion 156 and also defines the relative rotation angle of the first friction plate 141 and the second friction plate 151. This angle can be preset according to actual needs.
  • the first passive friction plate 131 has an annular shape, and a first raised step 133 is provided on the outer peripheral wall thereof.
  • the number of the first raised steps 133 is multiple, and each first raised step 133 is inserted into one of the guide grooves 112.
  • the first convex step 133 protrudes from the first passive friction plate 131 in the radial direction.
  • the second passive friction plate 132 has an annular shape, and a second raised step 134 is provided on the outer peripheral wall thereof.
  • the second convex step 134 protrudes from the second passive friction plate 132 in the radial direction.
  • the number of the second raised steps 134 is multiple, and each second raised step 134 is inserted into one of the guide grooves 112.
  • the elastic element 120 is clamped between the first passive friction plate 131 and the blocking wall 113.
  • the second raised step 133 on the first passive friction plate 131 is located in the guide groove 112 and can move axially along the guide groove 112.
  • the first passive friction plate 131 is in contact with the elastic element 120.
  • the first friction plate 141 and the second friction plate 151 constitute a friction plate group 140.
  • the first passive friction plate 131 is in contact with the second friction plate body 152, and the second passive friction plate 131 is in contact with the first friction plate body 142.
  • the second passive friction plate 132 is located between the first friction plate 141 and the second fixed ring 160, and the second convex step 134 is located in the guide groove 112 and can move axially along the guide groove 112.
  • the first fixed ring 170 and the second fixed ring 160 are sleeved on the drive shaft and fixedly connected to the housing 110 to confine the elastic element 120, the second passive friction plate 132, the friction plate group 140 and the first passive friction plate 131 to the tube Cavity 111.
  • the elastic element 120 is compressed in advance to generate elastic force, and the elastic force can make both the second passive friction plate 132 and the first passive friction plate 131 come into close contact with the friction plate group 140.
  • the rotary damper 100 is sleeved on the drive shaft 200, and the second friction plate 151 is meshed and connected with the drive shaft 200 by means of internal teeth 155 provided on the step 154.
  • the drive shaft 200 can drive the second friction plate 151 to rotate forward or backward.
  • the forward direction and the reverse direction refer to two opposite directions, such as a clockwise direction and a counterclockwise direction.
  • the friction plate group 140 has different axial height and the friction force of the first passive friction plate 131 and the second passive friction plate 132 at different times.
  • the difference between this embodiment and Embodiment 1 is that the number of elastic elements 120 is two.
  • An elastic element 120 is added between the second fixed ring 160 and the second passive friction plate 132, and the elastic element 120 is compressed and deformed by the second fixed ring 160 and the first passive friction plate 131 to have elastic force.
  • the solution of the foregoing embodiment 2 can also omit the elastic element 120 between the first passive friction plate 131 and the blocking wall 113, and only retain the elastic element 120 between the second passive friction plate 132 and the second fixing ring 160.
  • the friction plate group of the present invention has a variable height along the axial direction, and has different heights during forward and reverse rotation. Therefore, when rotating forward and reversely, it is in contact with the first passive friction plate and the second passive friction plate. The friction is different, so different damping can be produced.
  • a rotary damper is used on the tailgate of the trunk, the load of the motor is different during forward and reverse rotation. Therefore, the load of the motor is different during forward and reverse rotation, which requires the performance of the motor. Reduce, you can save costs.

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  • Mechanical Operated Clutches (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

一种摩擦片组，其沿轴向高度可调地设置。还公开了一种包括摩擦片组（140）的旋转阻尼器（100）。摩擦片组（140）沿轴向高度可变，在正向旋转与反向旋转时具有不同的高度，在正向旋转和反向旋转时与第一被动摩擦片（131）及第二被动摩擦片（132）的摩擦力不同，因此可产生不同的阻尼。这样的旋转阻尼器使用在后备箱尾门上时，在正向旋转和反向旋转时电机的负载也不相同，因此电机的负载在正向旋转和反向旋转时不同，对电机的性能要求降低，可以节省成本。

Description

摩擦片组与旋转阻尼器 技术领域
本发明涉及摩擦片组与旋转阻尼器。
背景技术
目前电动尾门技术是当前乘用车，特别是SUV和MPV车型后备箱尾门的最新技术，驾乘者通过按动车辆尾门开关键、遥控车钥匙或在尾门相应区域使用手或任意物体感应操作，控制尾门开闭的装置，电动尾门还带智能防夹、高度记忆功能等功能。具有操控便捷，实用性强等优点，因而广泛应用在C级豪车、B级车辆上，如路虎极光、揽胜系列、福特翼虎、Volvo XC70等SUV车型上。
为了保证电动尾门各大功能的实现，需要配备防夹条、自吸锁、ECU和电动撑杆，通过ECU控制电动撑杆的往复运动，结合自吸锁辅助，实现电动尾门的稳定平缓开关，并且要求在手动关门时，后备箱尾门可以悬停在任何一个开启角度，于是对电动撑杆提出了很高的要求，当前技术一般单纯靠电动撑杆内的电机来克服系统阻力及门重来完成，但在实际应用时，电机无法保证尾门在任意角度，特别是在斜坡，雪载等情况下实现悬停；或者在系统内增加液压式阻尼器，但液压阻尼器受环境温度的变化而影响阻尼效果，影响尾门悬停；液压阻尼器密封性很难保证，如有漏油，会影响系统稳定性；液压阻尼器制造成本高，不易实现批量生产。
现有技术中，设置旋转阻尼器实现尾门悬停，但现有的旋转阻尼器存在以下技术问题：汽车电动尾门撑杆内用于实现尾门在任意角度悬停的阻尼器在其正向旋转和反向旋转时产生的阻尼值基本一致，使得电机在驱动尾门在开启或者关闭的过程中有某一个方向的负载会相对的比较大，电机负载大对电机的要求较高，需要使用一些特殊的部件。而在实际使用过程中，并不需要电机在驱动后备箱尾门在开启和关闭过程中具有同样的负载。因此，现有旋转阻尼器在后备箱尾门开启和关闭过程中导致电机具有相同的负载，是一种浪费。
发明内容
本发明的目的之一是为了克服现有技术中的不足，提供一种正向旋转与反向旋转具有不同阻尼值的摩擦片及旋转阻尼器。
为实现以上目的，本发明通过以下技术方案实现：
一种摩擦片组，其特征在于，所述摩擦片组沿轴向高度可调地设置。
根据本发明的一个实施例，所述摩擦片组可正向旋转且可反向旋转地设置；所述 摩擦片组旋转选定的角度前与之后具有不同高度地设置。
根据本发明的一个实施例，所述摩擦片组包括第一摩擦片与第二摩擦片；所述第一摩擦片与所述第二摩擦片沿轴向分布；所述第一摩擦片与所述第二摩擦片可相对旋转且在完成选定角度的相对转动前与转动后，所述摩擦片组具有不同高度地设置。
根据本发明的一个实施例，所述第一摩擦片与所述第二摩擦片相对转动过程中，所述第一摩擦片与所述第二摩擦片相互抵顶并使所述第一摩擦片与所述第二摩擦片沿轴向相对移动地设置。
根据本发明的一个实施例，所述第一摩擦片与所述第二摩擦片至少其中之一可正向旋转且可反向旋转地设置；所述第一摩擦片与所述第二摩擦片至少其中之一正向旋转且可反向旋转时两者相互作用使所述摩擦片组具有不同的轴向高度地设置。
根据本发明的一个实施例，所述第一摩擦片包括第一摩擦片本体，所述第二摩擦片包括第二摩擦片本体；所述第一摩擦片与所述第二摩擦片相对转动过程中，所述第一摩擦片与所述第二摩擦片相互抵顶并使所述第一摩擦片本体与所述第二摩擦片本体沿轴向相对移动地设置。
根据本发明的一个实施例，所述第一摩擦片具有第一抵顶面，所述第二摩擦片具有第二抵顶面；所述第一抵顶面与所述第二抵顶面相接触；所述第一抵顶面与所述第二抵顶面至少其中之一沿圆周方向具有高度变化。
根据本发明的一个实施例，所述第一摩擦片包括第一摩擦片本体和第一抵顶面；所述第一抵顶面沿轴向至少一部分突出于所述第一摩擦片本体；所述第一抵顶面至少存在两个位置，所述两个位置沿轴向突出于第一摩擦片本体的高度不相同。
根据本发明的一个实施例，所述第一抵顶面沿圆周方向渐变式突出于所述第一摩擦片本体。
根据本发明的一个实施例，所述第一抵顶面沿圆周方向平滑地延伸。
根据本发明的一个实施例，所述第一抵顶面沿圆周方向为斜面。
根据本发明的一个实施例，所述第一摩擦片本体上设置有沿轴向贯穿所述第一摩擦片本体的第一通孔，所述第一凸块和第一抵顶面沿径向设置在所述第一通孔一侧。
根据本发明的一个实施例，所述第一摩擦片本体上还设置有至少两个第一凸块，两个第一凸块沿圆周方向设置在所述第一抵顶面两侧；所述第一凸块沿轴向突出于所述第一摩擦片本体及所述第一抵顶面。
根据本发明的一个实施例，所述第二摩擦片包括第二摩擦片本体，所述第二摩擦片本体上设置有第二凸块，所述第二凸块沿轴向突出于所述第二摩擦片本体；所述第二凸块上远离所述第二摩擦片本体的一端的端面为所述第二抵顶面；所述第二凸块位于两个第一凸块之间，且所述第一凸块沿圆周方向阻挡所述第二阻挡块以使所述第一摩擦片本体与所述第二摩擦片本体联动旋转。
根据本发明的一个实施例，所述第一抵顶面沿圆周方向设置有多段；所述第二抵 顶面设置有多个；每个第二抵顶面与其中一段第一抵顶面相配合。
根据本发明的一个实施例，所述摩擦片组还包括限位结构，所述限位结构用于限制所述第一摩擦片与所述第二摩擦片的相对旋转的角度。
根据本发明的一个实施例，所述限位结构包括第一凸块和第二凸块；所述第一凸块数目为两个以上且沿圆周方向间隔设置，所述第二凸块插置于所述两个所述第一凸块之间且可在所述两个所述第一凸块之间沿圆周方向移动；两个所述第一凸块阻挡所述第二凸块可限制所述第二凸块旋转的角度；所述第一凸块与所述第二凸块其中之一设置在第一摩擦片上，另一个设置在所述第二摩擦片上。
根据本发明的一个实施例，所述第一摩擦片与所述第二摩擦片其中之一上设置有台阶，另一个套装在所述台阶上。
根据本发明的一个实施例，所述第二摩擦片包括第二摩擦片本体和所述台阶；所述台阶沿轴向突出于所述第一摩擦片本体，所述第一摩擦片设置有贯穿所述第一摩擦片本体和所述台阶的第二通孔。
根据本发明的一个实施例，所述台阶设置有内齿，所述内齿用于与驱动轴相配合将所述第一摩擦片与驱动轴连接。
旋转阻尼器，其特征在于，所述旋转阻尼器包括：
前述的摩擦片组；
第一被动摩擦片；
第二被动摩擦片；
沿轴向，所述第一被动摩擦片与所述第二被动摩擦片分别设置于所述摩擦片两侧；所述第一被动摩擦片与所述第一摩擦片相接触，所述第二被动摩擦片与所述第二摩擦片相接触。
根据本发明的一个实施例，所述旋转阻尼器还包括外壳、弹性元件以及固定圈；所述外壳设置有管腔；所述弹性元件、第二被动摩擦片、摩擦片、第一被动摩擦片及固定圈依次沿轴向排列并设置于所述管腔内；所述固定圈与所述外壳连接，将所述弹性元件、第一被动摩擦片、摩擦片及第二被动摩擦片限制在所述管腔内。
本发明中的摩擦片组沿轴向高度可变，在正向旋转与反向旋转时具有不同的高度，因此在正向旋转和反向旋转时与第一被动摩擦片及第二被动摩擦片的摩擦力不同，因此可产生不同的阻尼。这样的旋转阻尼器使用在后备箱尾门上时，在正向旋转和反向旋转时电机的负载也不相同，因此电机的负载在正向旋转和反向旋转时不同，对电机的性能要求降低，可以节省成本。
附图说明
图1为本发明实施例1中的旋转阻尼器结构及使用状态示意图。
图2为图1中的旋转阻尼器结构及使用状态从另一角度观察的示意图。
图3为本发明实施例1中的旋转阻尼器结构及使用状态爆炸图。
图4为本发明实施例1中的摩擦片组结构爆炸示意图。
图5为图4中的摩擦片组结构从另一角度观察的结构示意图。
图6为本发明实施例1中的第一摩擦片结构示意图。
图7为本发明实施例1中的第二摩擦片结构示意图。
图8为本发明实施例1中的摩擦片组轴向高度不同状态的对比示意图。
图9为本发明实施例2在的旋转阻尼器结构示意图。
具体实施方式
实施例1
如图1至图3所示，旋转阻尼器100，其包括外壳110、弹性元件120、第一被动摩擦片131、摩擦片组140、第二被动摩擦片132以及第二固定圈160。所述外壳110为圆管状，设置有管腔111。所述外壳110设置有导向槽112，所述导向槽112沿轴向延伸。所述导向槽112与所述管腔111连通。导向槽112沿圆周方向设置有多个，其具体数目可根据实际情况确定。在如图所示的示例中，导向槽112数目为五个。外壳110的内壁设置有阻挡壁113。阻挡壁113突出于外壳110的内壁。阻挡壁113用于阻挡、抵顶及支撑弹性元件120。阻挡壁113可根据弹性元件120的结构确定。在如图所示的示例中，阻挡壁113沿圆周方向设置有一圈，阻挡壁113为圆环状。本实施例中，外壳110为一体成型件。
如图3所示，第一固定圈170、弹性元件120、第一被动摩擦片131、摩擦片组140、第二被动摩擦片132以及第二固定圈160沿轴向依次设置在管腔111内。第一固定圈170与第二固定圈160分别设置在最外的两侧并与外壳110固定连接，第一固定圈170与第二固定圈160共同将弹性元件120、第一被动摩擦片131、摩擦片组140及第二被动摩擦片132限制在管腔111内。弹性元件120设置于管腔111内，用于提供弹力。弹性元件120可以采用波形弹簧，碟形弹簧、圆柱弹簧以及钢丝弹簧。在如图所示的示例中，弹性元件120为波形弹簧。弹性元件120支撑在第二固定圈170上。第一被动摩擦片131及第二被动摩擦片132沿轴向设置在摩擦片组140轴向两侧，并分别与摩擦片组140接触。
如图4至图8所示，摩擦片组140包括第一摩擦片141和第二摩擦片151。第一摩擦片141包括第一摩擦片本体142及第一抵顶面143。第一摩擦片本体142为圆环状，具有第一通孔144。第一抵顶面143设置在第一通孔144径向的一侧。第一抵顶面143沿轴向突出于第一摩擦片本体142。沿圆周方向，第一抵顶面143至少具有两个位置，该两个位置沿轴向突出于第一摩擦片本体142的高度不相同。根据本发明优选的方案，第一抵顶面143沿圆周方向渐变式设置。更优选地是，第一抵顶面143沿圆周方向平滑延伸。在如图所示的示例中，第一抵顶面143沿圆周方向为斜面。在本 实施例中，沿圆周方向，第一抵顶面143沿圆周方向各个位置突出于第一摩擦片本体142的高度均不相同，如图所示，第一位置148处突出于第一摩擦片本体142的高度小于第二位置149处突出于第一摩擦片本体142的高度。第一抵顶面143设置有多段，多段第一抵顶面143沿圆周方向间隔分布。第一抵顶面143用于与第二抵顶面157相配合，第一抵顶面143的具体数目依据可稳定保持第一摩擦片141与第二摩擦片151的相对连接确定。在如图所示的示例中，第一抵顶面143设置有三段，沿圆周方向间隔分布。第一摩擦片本体142上设置有至少两个第一凸块146。沿圆周方向，第一抵顶面143两侧各设置一个第一凸块146。第一凸块146沿轴向突出于第一摩擦片本体142及第一抵顶面143。沿径向，第一凸块146位于第一通孔144一侧。根据本发明，至少一段第一抵顶面143两侧设置有第一凸块146。在如图所示的优选示例中，共设置有三个第一凸块146。三个第一凸块146沿圆周方向分布，使得每一段第一抵顶面143沿圆周方向两侧均设置有第一凸块146。
第二摩擦片151包括第二摩擦片本体152。第二摩擦片本体152上设置有台阶154。台阶154沿轴向突出于第二摩擦片本体152。第二通孔153贯穿第二摩擦片本体152及台阶154。即，第二摩擦片本体152为圆环状，台阶154为圆管状。台阶154的内壁设置有内齿155。内齿155用于与驱动轴(图中未示出)相配合将第二摩擦片151与驱动轴连接使两者联动，通过驱动轴可驱动第二摩擦片151正向旋转及反向旋转。沿径向，台阶154一侧设置有第二凸块156。第二凸块156沿轴向突出于第二摩擦片本体152。第二凸块156远离第二摩擦片本体151的一端的端面为第二抵顶面157。第二凸块156数目为多个，沿圆周方向分布。第二凸块156的数目根据第一抵顶面143的数目确定。每个第二凸块156上的第二抵顶面157抵顶在其中一段第一抵顶面143上。
第一摩擦片141与第二摩擦片151组成轴向高度可调的摩擦片组140。组装时，第二摩擦片本体152上的台阶154穿入第一通孔144内，第二摩擦片本体152套装在台阶144上。第二凸块156的第二抵顶面157抵顶在第一抵顶面143上，两者相接触。第一摩擦片本体142与第二摩擦片本体152可相对旋转，第二凸块156随第二摩擦片本体152旋转过程中，第一凸块146圆周方向阻挡第二凸块156，既可以限制第二凸块156的旋转角度，也即是限定了第一摩擦片141与第二摩擦片151的相对旋转角度；还可以使第一摩擦片本体142与第二摩擦片本体152联动转动。
摩擦片组140使用时，第一摩擦片141与第二摩擦片151相对转动时，第二抵顶面157沿圆周方向在第一抵顶面143上移动，由于第一抵顶面143沿圆周方向突出于第一摩擦片本体141的高度不同，因此第二抵顶面157抵顶在第一抵顶面143的不同位置时，使得第一摩擦片本体142和第二摩擦片本体152轴向的相对位置不同，从而使得摩擦片组140轴向的高度产生变化。如图8所示，左侧的摩擦片组140与右侧的摩擦片组140是第一摩擦片141与第二摩擦片142相对旋转一定角度后的两种状态。 左侧的摩擦片组140，第二凸块156的第二抵顶面157抵顶在第一位置148处，摩擦片组140的轴向高度为H1。右侧的摩擦片组140，第二凸块156的第二抵顶面157抵顶在第二位置149处，摩擦片组140的轴向高度为H2。由于第一位置148处突出于第一摩擦片本体142的高度小于第二位置149处突出于第一摩擦片本体142的高度，所以H2大于H1。在第一摩擦片141与第二摩擦片151相对正向旋转或反向旋转时，第二凸块156的第二抵顶面157既可以自第一位置148处移动至第二位置149处，也可以自第二位置149移动至第一位置148处。所以，摩擦片组140的轴向高度可在H1与H2之间切换。三个第一凸块146的相互间距，限定了第二凸块156的移动距离，也限定了第一摩擦片141与第二摩擦片151的相对旋转角度。这个角度可根据实际需要预先设定。
第一被动摩擦片131为圆环状，其外周壁上设置有第一凸起台阶133。第一凸起台阶133数目为多个，每个第一凸起台阶133插入其中一个导向槽112内。第一凸起台阶133沿径向突出于第一被动摩擦片131。第二被动摩擦片132为圆环状，其外周壁上设置有第二凸起台阶134。第二凸起台阶134沿径向突出于第二被动摩擦片132。第二凸起台阶134数目为多个，每个第二凸起台阶134插入其中一个导向槽112内。
本发明中的旋转阻尼器100使用时，弹性元件120被夹持于第一被动摩擦片131与阻挡壁113之间。第一被动摩擦片131上的第二凸起台阶133位于导向槽112内并可沿导向槽112轴向移动。第一被动摩擦片131与弹性元件120相接触。第一摩擦片141与第二摩擦片151组成摩擦片组140。第一被动摩擦片131与第二摩擦片本体152相接触，第二被动摩擦片131与第一摩擦片本体142相接触。第二被动摩擦片132位于第一摩擦片141与第二固定圈160之间，第二凸起台阶134位于导向槽112内并可沿导向槽112轴向移动。第一固定圈170与第二固定圈160套装在驱动轴上，并与外壳110固定连接，将弹性元件120、第二被动摩擦片132、摩擦片组140及第一被动摩擦片131限制在管腔111内。弹性元件120预先被压缩而产生弹力，该弹力可使第二被动摩擦片132及第一被动摩擦片131均与摩擦片组140紧密接触。
旋转阻尼器100套装在驱动轴200上，第二摩擦片151依靠台阶154上设置的内齿155与驱动轴200啮合连接。驱动轴200可带动第二摩擦片151正向旋转或反向旋转。所述正向和反向是指两个相反的方向，比如顺时针方向与逆时针方向。
驱动轴200带动第二摩擦片151正向旋转或反向旋转时使得摩擦片组140轴向高度产生变化。摩擦片组140轴向高低不同时与第一被动摩擦片131及第二被动摩擦片132的摩擦力不同。摩擦片组140轴向高度越大，则与第一被动摩擦片131及第二被动摩擦片132的摩擦力越大，因此产生的阻尼越大；摩擦片组140轴向高度越小，则与第一被动摩擦片131及第二被动摩擦片132的摩擦力越小，因此产生的阻尼越小。
实施例2
如图9所示，本实施例与实施例1的不同之处在于，弹性元件120数目为两个。 在第二固定圈160与第二被动摩擦片132之间增加一个弹性元件120，该弹性元件120受第二固定圈160与第一被动摩擦片131挤压变形而具有弹力。
前述实施例2的方案还可以省略第一被动摩擦片131与阻挡壁113之间的弹性元件120，仅保留第二被动摩擦片132与第二固定圈160之间的弹性元件120。
本发明中的摩擦片组沿轴向高度可变，在正向旋转与反向旋转时具有不同的高度，因此在正向旋转和反向旋转时与第一被动摩擦片及第二被动摩擦片的摩擦力不同，因此可产生不同的阻尼。这样的旋转阻尼器使用在后备箱尾门上时，在正向旋转和反向旋转时电机的负载也不相同，因此电机的负载在正向旋转和反向旋转时不同，对电机的性能要求降低，可以节省成本。
以上仅为本发明较佳的实施例，并不用于局限本发明的保护范围，任何在本发明精神内的修改、等同替换或改进等，都涵盖在本发明的权利要求范围内。

Claims (20)

  1. 一种摩擦片组，其特征在于，所述摩擦片组沿轴向高度可调地设置。
  2. 根据权利要求1所述的摩擦片组，其特征在于，所述摩擦片组可正向旋转且可反向旋转地设置；所述摩擦片组旋转选定的角度之前与之后具有不同高度地设置。
  3. 根据权利要求1所述的摩擦片组，其特征在于，所述摩擦片组包括第一摩擦片与第二摩擦片；所述第一摩擦片与所述第二摩擦片沿轴向分布；所述第一摩擦片与所述第二摩擦片可相对旋转且在完成选定角度的相对转动前与转动后，所述摩擦片组具有不同高度地设置。
  4. 根据权利要求3所述的摩擦片组，其特征在于，所述第一摩擦片与所述第二摩擦片相对转动过程中，所述第一摩擦片与所述第二摩擦片相互抵顶并使所述第一摩擦片与所述第二摩擦片沿轴向相对移动地设置。
  5. 根据权利要求3所述的摩擦片组，其特征在于，所述第一摩擦片与所述第二摩擦片至少其中之一可正向旋转且可反向旋转地设置；所述第一摩擦片与所述第二摩擦片至少其中之一正向旋转且可反向旋转时两者相互作用使所述摩擦片组具有不同的轴向高度地设置。
  6. 根据权利要求3所述的摩擦片组，其特征在于，所述第一摩擦片包括第一摩擦片本体，所述第二摩擦片包括第二摩擦片本体；所述第一摩擦片与所述第二摩擦片相对转动过程中，所述第一摩擦片与所述第二摩擦片相互抵顶并使所述第一摩擦片本体与所述第二摩擦片本体沿轴向相对移动地设置。
  7. 根据权利要求3所述的摩擦片组，其特征在于，所述第一摩擦片具有第一抵顶面，所述第二摩擦片具有第二抵顶面；所述第一抵顶面与所述第二抵顶面相接触；所述第一抵顶面与所述第二抵顶面至少其中之一沿圆周方向具有高度变化。
  8. 根据权利要求7所述的摩擦片组，其特征在于，所述第一摩擦片包括第一摩擦片本体和第一抵顶面；所述第一抵顶面沿轴向至少一部分突出于所述第一摩擦片本体；所述第一抵顶面至少存在两个位置，所述两个位置沿轴向突出于第一摩擦片本体的高度不相同。
  9. 根据权利要求8所述的摩擦片组，其特征在于，所述第一抵顶面沿圆周方向平滑地延伸。
  10. 根据权利要求8所述的摩擦片组，其特征在于，所述第一抵顶面沿圆周方向为斜面。
  11. 根据权利要求7所述的摩擦片组，其特征在于，所述第一摩擦片本体上还设置有至少两个第一凸块，两个第一凸块沿圆周方向设置在所述第一抵顶面两侧；所述第一凸块沿轴向突出于所述第一摩擦片本体及所述第一抵顶面。
  12. 根据权利要求11所述的摩擦片组，其特征在于，所述第二摩擦片包括第二摩擦片本体，所述第二摩擦片本体上设置有第二凸块，所述第二凸块沿轴向突出于所述第二摩擦片本体；所述第二凸块上远离所述第二摩擦片本体的一端的端面为所述第二抵顶面；所述第二凸块位于两个第一凸块之间，且所述第一凸块沿圆周方向阻挡所述第二阻挡块以使所述第一摩擦片本体与所述第二摩擦片本体联动旋转。
  13. 根据权利要求7所述的摩擦片组，其特征在于，所述第一抵顶面沿圆周方向设置有多段；所述第二抵顶面设置有多个；每个第二抵顶面与其中一段第一抵顶面相配合。
  14. 根据权利要求3至7任一权利要求所述的摩擦片组，其特征在于，所述摩擦片组还包括限位结构，所述限位结构用于限制所述第一摩擦片与所述第二摩擦片的相对旋转的角度。
  15. 根据权利要求1所述的摩擦片组，其特征在于，所述限位结构包括第一凸块和第二凸块；所述第一凸块数目为两个以上且沿圆周方向间隔设置，所述第二凸块插置于所述两个所述第一凸块之间且可在所述两个所述第一凸块之间沿圆周方向移动；两个所述第一凸块阻挡所述第二凸块可限制所述第二凸块旋转的角度；所述第一凸块与所述第二凸块其中之一设置在第一摩擦片上，另一个设置在所述第二摩擦片上。
  16. 根据权利要求1所述的摩擦片组，其特征在于，所述第一摩擦片与所述第二摩擦片其中之一上设置有台阶，另一个套装在所述台阶上。
  17. 根据权利要求16所述的摩擦片组，其特征在于，所述第二摩擦片包括第二摩擦片本体和所述台阶；所述台阶沿轴向突出于所述第一摩擦片本体，所述第一摩擦片设置有贯穿所述第一摩擦片本体和所述台阶的第二通孔。
  18. 根据权利要求17所述的摩擦片组，其特征在于，所述台阶设置有内齿，所述内齿用于与驱动轴相配合将所述第一摩擦片与驱动轴连接。
  19. 旋转阻尼器，其特征在于，所述旋转阻尼器包括：
    权利要求1至18任一权利要求所述的摩擦片组；
    第一被动摩擦片；
    第二被动摩擦片；
    沿轴向，所述第一被动摩擦片与所述第二被动摩擦片分别设置于所述摩擦片两侧；所述第一被动摩擦片与所述第一摩擦片相接触，所述第二被动摩擦片与所述第二摩擦片相接触。
  20. 根据权利要求19所述的旋转阻尼器，其特征在于，所述旋转阻尼器还包括外壳、弹性元件以及固定圈；所述外壳设置有管腔；所述弹性元件、第二被动摩擦片、摩擦片、第一被动摩擦片及固定圈依次沿轴向排列并设置于所述管腔内；所述固定圈与所述外壳连接，将所述弹性元件、第一被动摩擦片、摩擦片及第二被动摩擦片限制在所述管腔内。
PCT/CN2020/075682 2020-01-07 2020-02-18 摩擦片组与旋转阻尼器 WO2021138967A1 (zh)

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