WO2022228337A1 - 离合器执行机构及车辆 - Google Patents

离合器执行机构及车辆 Download PDF

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Publication number
WO2022228337A1
WO2022228337A1 PCT/CN2022/088730 CN2022088730W WO2022228337A1 WO 2022228337 A1 WO2022228337 A1 WO 2022228337A1 CN 2022088730 W CN2022088730 W CN 2022088730W WO 2022228337 A1 WO2022228337 A1 WO 2022228337A1
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WO
WIPO (PCT)
Prior art keywords
adapter
shaft
cam
clutch actuator
screw shaft
Prior art date
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Ceased
Application number
PCT/CN2022/088730
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English (en)
French (fr)
Inventor
徐占
杨永刚
屠有余
白秀超
柯志宏
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FAW Group Corp
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FAW Group Corp
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Filing date
Publication date
Application filed by FAW Group Corp filed Critical FAW Group Corp
Publication of WO2022228337A1 publication Critical patent/WO2022228337A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such

Definitions

  • the present application relates to the technical field of vehicles, for example, to a clutch actuator and a vehicle.
  • the transfer case is responsible for the distribution and adjustment of torque
  • the electronically controlled wet clutch is the mainstream key component used in the transfer case to realize torque distribution and adjustment.
  • the electronically controlled wet clutch is composed of a wet clutch and a clutch actuator. By applying control commands to the clutch actuator, the clutch actuator is controlled to generate a certain axial thrust, which acts on the wet clutch to achieve the transfer case requirements. torque distribution and adjustment functions.
  • the clutch actuators in the related art mainly include two types: electronically controlled hydraulic type and electronically controlled mechanical type.
  • the electronically controlled hydraulic clutch actuator has good performance, and has the advantages of high control accuracy, fast response and easy safety protection.
  • the electronically controlled hydraulic clutch actuator has the disadvantages of being greatly affected by temperature and high cost.
  • the electronically controlled mechanical clutch actuator has the advantages of simple structure, strong adaptability to the environment and low manufacturing cost, and has been widely used in recent years, such as turbine worm clutch actuator, gear pair clutch actuator, etc.
  • the clutch actuator with this structure has the problem of low execution efficiency.
  • the present application provides a clutch actuator and a vehicle, which have a simple and compact structure, low manufacturing cost and high execution efficiency.
  • a clutch actuator comprising: a housing; a translational transmission component, comprising a nut and a screw shaft screwed into an inner hole of the nut, the nut being fixed on the housing; a rotary transmission
  • the component includes a connecting shaft, a cam and an adapter, the connecting shaft is rotatably arranged on the housing, the cam is sleeved on the connecting shaft, and the adapter is connected with the screw shaft , the adapter can abut on the special-shaped surface of the cam;
  • the rotation driving part is arranged on the casing, and the rotation driving part is configured to drive the connecting shaft and drive the cam to rotate, so
  • the adapter is driven by the special-shaped surface of the cam to drive the screw shaft to rotate relative to the nut, so that the adapter can be driven along the screw shaft by the screw shaft. Axial translation of the screw shaft.
  • the special-shaped surface of the cam is a helical surface distributed along the axial direction of the connecting shaft.
  • the cam and the connecting shaft are integral structures.
  • the inner hole of the nut is provided with an inner helical groove
  • the outer circumference of the screw shaft is provided with an outer helical groove matching the inner helical groove
  • the inner helical groove is provided.
  • a plurality of balls are arranged between the groove and the outer helical groove along the extending direction of the outer helical groove.
  • an end of the adapter away from the screw shaft is provided with a mounting pin, and an abutting bearing is sleeved on the mounting pin, and the arc surface of the abutting bearing is can be in contact with the special-shaped surface.
  • the clutch actuator further includes a thrust bearing, and the thrust bearing is arranged on a side of the adapter that is away from the screw shaft.
  • the rotary drive component includes an actuator motor, and a rotor shaft of the actuator motor is in driving connection with the connection shaft.
  • one of the rotor shaft and the connecting shaft is provided with a flat key
  • the other of the rotor shaft and the connecting shaft is provided with a flat key groove, and the flat key can be inserted into the flat keyway.
  • the present application also provides a vehicle, comprising the clutch actuator according to any one of the above solutions.
  • FIG. 1 is a schematic structural diagram of a clutch actuator provided by an embodiment of the present application from a perspective;
  • FIG. 2 is a schematic structural diagram of the clutch actuator provided by the embodiment of the present application from another perspective;
  • FIG. 3 is an exploded schematic diagram of a clutch actuator provided by an embodiment of the present application.
  • Fig. 4 is a partial enlarged view at A of Fig. 3;
  • FIG. 5 is a schematic structural diagram of a translational transmission component of a clutch actuator provided in an embodiment of the present application
  • FIG. 6 is a cross-sectional view of a clutch actuator provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of the clutch actuator provided by the embodiment of the present application when the clutch is disconnected.
  • 2-translational transmission part 21-nut; 211-inner helical groove; 22-screw shaft; 221-thread part; 2211-external helical groove; 222-connecting part; 23-ball;
  • 3-Rotation transmission parts 31-Connecting shaft; 311-Flat keyway; 32-Cam; 321-Special-shaped surface; 33-Adapter; 331-Installation pin;
  • connection should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements.
  • connection may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the present embodiment provides a clutch actuator, which includes a housing (not shown in the figure), a translation transmission part 2 , a rotation transmission part 3 and a rotation drive part 1 , wherein , the translational transmission component 2 includes a nut 21 and a screw shaft 22 screwed into the inner hole of the nut 21, and the nut 21 is fixed on the housing; the rotational transmission component 3 includes a connecting shaft 31, a cam 32 and an adapter 33, the connecting shaft 31 is rotatably arranged on the housing, the cam 32 is sleeved on the connecting shaft 31, the adapter 33 is connected with the screw shaft 22, and the adapter 33 can abut on the special-shaped surface 321 of the cam 32; The rotary drive member 1 is arranged on the housing, and the rotary drive member 1 is configured to drive the connecting shaft 31 and drive the cam 32 to rotate.
  • the female 21 rotates so that the adapter 33 can translate along the axial direction of the screw shaft 22 under the driving of the screw shaft 22 .
  • the casing plays an integral supporting role for the translation transmission part 2, the rotation transmission part 3 and the rotation drive part 1;
  • the cooperation between the driving parts 1, the rotating driving part 1 can drive the screw shaft 22 to rotate relative to the screw nut 21 through the rotating transmission part 3, and at the same time the screw shaft 22 can move linearly along its own axis direction, thereby driving the adapter 33 to translate To generate axial thrust;
  • the translational transmission part 2 is a screw nut pair structure, which has high execution efficiency and good execution reliability; by setting the rotary transmission part 3, the rotary motion of the rotary drive part 1 is transmitted to the translational transmission part 2,
  • the adapter 33 is driven to rotate by the special-shaped surface 321 of the cam 32, the structure is simple, the design is novel, and the manufacturing cost is low.
  • the special-shaped surface 321 of the cam 32 is a helical surface distributed along the axial direction of the connecting shaft 31 , and the centerline of the helical special-shaped surface 321 coincides with the axis of the connecting shaft 31 .
  • the structure of the special-shaped surface 321 of the cam 32 can also be set to other shapes, which can be used as long as the adapter 33 can be driven to rotate when the cam 32 rotates.
  • the cam 32 and the connecting shaft 31 are integral structures. With this arrangement, the link of assembling the cam 32 and the connecting shaft 31 can be saved, and the processing efficiency can be improved.
  • a support bearing 34 is also arranged between the connecting shaft 31 and the housing. As shown in FIG. 1 to FIG. 3 , support bearings 34 are sleeved on both sides of the connecting shaft 31 , and the support bearings 34 are fixed on the housing. , the support bearing 34 can play the role of supporting the connecting shaft 31 , and can reduce the friction when the connecting shaft 31 rotates relative to the housing, and ensure the smoothness of the rotating process of the connecting shaft 31 .
  • an end of the adapter 33 away from the screw shaft 22 is provided with a mounting pin 331 , an abutting bearing 332 is sleeved on the mounting pin 331 , and the arc surface of the abutting bearing 332 can abut against the special-shaped surface 321 .
  • This arrangement can reduce the friction generated when the adapter 33 and the cam 32 move relative to each other, reduce wear and tear, and also reduce the heat generated during the relative movement between the two, prolonging the distance between the cam 32 and the adapter 33. service life.
  • the clutch actuator further includes a thrust bearing 4 , and the thrust bearing 4 is disposed on the side of the adapter 33 away from the screw shaft 22 .
  • the thrust bearing 4 is limited by an annular step and an end plane on the adapter 33 .
  • the inner hole of the nut 21 is provided with an inner helical groove 211
  • the outer periphery of the screw shaft 22 is provided with an outer helical groove 2211 matching the inner helical groove 211
  • the inner helical groove 211 and the outer helical groove 2211 are provided with an outer helical groove 2211 .
  • a plurality of balls 23 are arranged along the extending direction of the outer helical groove 2211 .
  • the thread lead angle of the inner helical groove 211 Thread lead angle of external helical groove 2211
  • the return spring of the clutch will drive the thrust bearing 4 to move towards the direction close to the adapter 33, and the inner helical groove 211 is set to its thread lift angle
  • the adapter 33 can drive the screw shaft 22 to move along its axis direction, so that the screw shaft 22 can rotate relative to the screw nut 21, so that the screw shaft 22 and the adapter 33 can be reset , the setting of the reset structure can be omitted, the overall structure of the clutch actuator can be simplified, the overall volume thereof can be reduced, and the manufacturing cost can be saved.
  • the screw shaft 22 includes a threaded portion 221 and a connecting portion 222 that are connected to each other.
  • the outer diameter of the connecting portion 222 is larger than the outer diameter of the threaded portion 221, and the two are connected to form a stepped shaft structure.
  • the connecting portion 222 is configured to connect In the adapter 33 , the outer helical groove 2211 is disposed on the outer circumference of the threaded portion 221 .
  • the connecting portion 222 is provided with a plurality of first connecting holes at intervals along the circumferential direction thereof, and the adapter 33 is provided with a plurality of second connecting holes corresponding to the first connecting holes, and the connecting pieces are pierced in sequence. in the first connection hole and the second connection hole, so as to realize the connection between the connection part 222 and the adapter 33 .
  • the connection portion 222 is a connection flange, and the connection is more stable.
  • one of the first connection hole and the second connection hole is a through hole
  • the other of the first connection hole and the second connection hole is a threaded hole
  • the connecting piece is a connecting bolt
  • the bolt connection has the advantages of simple processing and easy disassembly. The advantage of convenient installation.
  • the screw shaft 22 and the adapter 33 may also be connected in other ways, such as welding or clamping, which is not limited in this embodiment.
  • the center of the screw shaft 22 is provided with a central hole, which can be set to avoid the input shaft, and can reduce the weight of the clutch actuator.
  • the rotary driving component 1 includes an actuator motor 11 , and the rotor shaft 112 of the actuator motor 11 is in driving connection with the connecting shaft 31 .
  • One of the rotor shaft 112 and the connecting shaft 31 is provided with a flat key 111
  • the other of the rotor shaft 112 and the connecting shaft 31 is provided with a flat key groove 311
  • the flat key 111 can be inserted into the flat key groove 311 to ensure that the connecting shaft 31 is connected to the flat key groove 311 .
  • Stable connection between the rotor shafts 112 so that the connection shaft 31 rotates with the rotation of the rotor shaft 112 .
  • the rotor shaft 112 is provided with a flat key 111
  • the connecting shaft 31 is provided with a flat key groove 311 .
  • the rotary drive component 1 further includes an execution controller 12 , and the execution controller 12 is configured to receive and process the control signal sent by the transfer case, and then output it to the execution motor 11 .
  • the execution controller 12 is fixed on the execution motor 11 through a connector.
  • the execution motor 11 is responsible for rotating the rotor shaft 112 by a preset angle according to the command of the execution controller 12.
  • the rotor shaft 112 drives the connecting shaft 31 and the cam 32 to rotate by the preset angle, and at the same time, the special-shaped surface 321 of the cam 32 pushes the adapter 33 to drive the wire.
  • the screw shaft 22 rotates relative to the screw nut 21; through the cooperation between the screw shaft 22 and the screw nut 21, the rotation of the screw shaft 22 can be converted into the translation of the screw shaft 22 along its axis direction, and the drive adapter 33 is driven along the
  • the axial direction of the screw shaft 22 translates to push the thrust bearing 4 to move in a direction close to the clutch, so as to implement the pressing operation of the clutch.
  • the execution controller 12 is configured to receive the transfer case engaging clutch control signal, control the rotor shaft 112 of the execution motor 11 to rotate forward (in the direction shown in FIG. 1 ), and drive the connection shaft 31 and the cam 32 to rotate forward through the execution motor 11 , and the cam
  • the special-shaped surface 321 of 32 can push the upper end of the adapter 33 to move to the left, thereby driving the screw shaft 22 to rotate relative to the screw nut 21.
  • the screw shaft 22 will translate along its axis direction to drive the adapter 33 to approach.
  • the direction of the thrust bearing 4 moves, thereby pushing the thrust bearing 4 to move in the direction close to the clutch, until the thrust bearing 4 is in contact with the clutch, and pushes the clutch to become engaged.
  • the output torque of the actuator motor 11 the transmission torque of the clutch can be adjusted. size.
  • the execution controller 12 is configured to receive the transfer case engaging clutch control signal, control the rotor shaft 112 of the execution motor 11 to reverse (the opposite direction as shown in FIG. 1 ), and drive the connecting shaft 31 and the cam 32 to reverse the rotation through the execution motor 11 , there will be a gap between the cam 32 and the upper end of the adapter 33; at this time, the return spring of the clutch will push the thrust bearing 4 to move in the direction close to the screw nut 21, thereby driving the adapter 33 and the screw shaft 22 to produce axial Translational movement due to the lead angle of the thread of the internal helical groove 211 Under the pushing action of the thrust bearing 4, the adapter 33 can drive the screw shaft 22 to move along its axis direction, so that the screw shaft 22 can rotate relative to the screw nut 21, so that the screw shaft 22 and the adapter 33 can be reset , the clutch is transformed into the disengaged state.
  • This embodiment also provides a vehicle, by applying the above-mentioned clutch actuator, the structure is compact, the execution efficiency is high, and the user experience can be improved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Transmission Devices (AREA)

Abstract

一种离合器执行机构。该离合器执行机构包括壳体、平移传动部件（2）、旋转传动部件（3）和旋转驱动部件（1），平移传动部件（2）包括丝母（21）和螺接于丝母（21）的内孔中的丝杠轴（22），丝母（21）固设于壳体上；旋转传动部件（3）包括连接轴（31）、凸轮（32）和转接件（33），连接轴（31）转动设置于壳体上，凸轮（32）套设于连接轴（31）上，转接件（33）与丝杠轴（22）相连接，转接件（33）能抵接于凸轮（32）的异形面（321）；旋转驱动部件（1）设置于壳体上，旋转驱动部件（1）被配置为驱动连接轴（31）并带动凸轮（32）旋转，转接件（33）在凸轮（32）的异形面（321）的驱动作用下带动丝杠轴（22）相对于丝母（21）转动，使转接件（33）能在丝杠轴（22）的带动下沿丝杠轴（22）的轴向平移。还提供一种车辆。

Description

离合器执行机构及车辆
本申请要求在2021年04月28日提交中国专利局、申请号为202110468883.9的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及车辆技术领域，例如涉及一种离合器执行机构及车辆。
背景技术
分动器作为实现汽车四驱功能的核心总成，负责扭矩的分配和调节，而电控湿式离合器是分动器所采用的主流的实现扭矩分配和调节的关键部件。电控湿式离合器由湿式离合器和离合器执行机构两部分组成，通过对离合器执行机构施加控制命令，控制离合器执行机构产生一定的轴向推力，该轴向推力作用到湿式离合器上，实现分动器需求的扭矩分配和调节功能。
相关技术中的离合器执行机构主要包括电控液压式和电控机械式两种。电控液压式离合器执行机构的性能较好，具有控制精度高、响应快及易于实现安全保护的优点，但是电控液压式离合器执行机构存在受温度影响大、成本较高等缺点。而电控机械式离合器执行机构具有结构简单、对环境适应性强及制造成本较低的优点，近年来得到了广泛的应用，如涡轮蜗杆式离合器执行机构、齿轮副式离合器执行机构等，但是这种结构的离合器执行机构存在执行效率低的问题。
发明内容
本申请提供了一种离合器执行机构及车辆，结构简单紧凑，制造成本较低，且执行效率较高。
一种离合器执行机构，包括：壳体；平移传动部件，包括丝母和螺接于所述丝母的内孔中的丝杠轴，所述丝母固设于所述壳体上；旋转传动部件，包括连接轴、凸轮和转接件，所述连接轴转动设置于所述壳体上，所述凸轮套设于所述连接轴上，所述转接件与所述丝杠轴相连接，所述转接件能抵接于所述凸轮的异形面；旋转驱动部件，设置于所述壳体上，所述旋转驱动部件被配置为驱动所述连接轴并带动所述凸轮旋转，所述转接件在所述凸轮的所述异形面的驱动作用下带动所述丝杠轴相对于所述丝母转动，使所述转接件能在所述丝杠轴的带动下沿所述丝杠轴的轴向平移。
作为一种离合器执行机构的可选方案，所述凸轮的所述异形面为沿所述连接轴的轴线方向分布的螺旋面。
作为一种离合器执行机构的可选方案，所述凸轮和所述连接轴为一体式结构。
作为一种离合器执行机构的可选方案，所述丝母的内孔中设有内螺旋槽，所述丝杠轴外周设有与所述内螺旋槽相匹配的外螺旋槽，所述内螺旋槽与所述外螺旋槽之间沿所述外螺旋槽的延伸方向设置有多个滚珠。
作为一种离合器执行机构的可选方案，所述内螺旋槽的螺纹升角
Figure PCTCN2022088730-appb-000001
所述外螺旋槽的螺纹升角
Figure PCTCN2022088730-appb-000002
作为一种离合器执行机构的可选方案，所述转接件远离所述丝杠轴的一端设置有安装销，所述安装销上套设有抵接轴承，所述抵接轴承的圆弧面能抵接于所述异形面。
作为一种离合器执行机构的可选方案，所述离合器执行机构还包括推力轴承，所述推力轴承设置于所述转接件上远离所述丝杠轴的一侧。
作为一种离合器执行机构的可选方案，所述旋转驱动部件包括执行电机，所述执行电机的转子轴与所述连接轴传动连接。
作为一种离合器执行机构的可选方案，所述转子轴和所述连接轴中的一个设置有平键，所述转子轴和所述连接轴中的另一个设置有平键槽，所述平键能够插接于所述平键槽内。
本申请还提供一种车辆，包括如以上任一方案所述的离合器执行机构。
附图说明
下面将对本申请实施例描述中所需要使用的附图作简单的介绍。
图1是本申请实施例提供的离合器执行机构在一个视角下的结构示意图；
图2是本申请实施例提供的离合器执行机构在另一个视角下的结构示意图；
图3是本申请实施例提供的离合器执行机构的爆炸示意图；
图4是图3的A处的局部放大图；
图5是本申请实施例提供的离合器执行机构的平移传动部件的结构示意图；
图6是本申请实施例提供的离合器执行机构的剖视图；
图7是本申请实施例提供的离合器执行机构在离合器接合时的结构示意图；
图8是本申请实施例提供的离合器执行机构在离合器断开时的结构示意图。
图中：
1-旋转驱动部件；11-执行电机；111-平键；112-转子轴；12-执行控制器；
2-平移传动部件；21-丝母；211-内螺旋槽；22-丝杠轴；221-螺纹部；2211-外螺旋槽；222-连接部；23-滚珠；
3-旋转传动部件；31-连接轴；311-平键槽；32-凸轮；321-异形面；33-转接件；331-安装销；332-抵接轴承；34-支撑轴承；
4-推力轴承。
具体实施方式
下面结合附图和实施例对本申请进行明。可以理解的是，此处所描述的实施例仅仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关部分的结构。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
如图1-图3所示，本实施例提供一种离合器执行机构，该离合器执行机构包括壳体(图中未示出)、平移传动部件2、旋转传动部件3和旋转驱动部件1，其中，平移传动部件2包括丝母21和螺接于丝母21的内孔中的丝杠轴22，丝母21固设于壳体上；旋转传动部件3包括连接轴31、凸轮32和转接件33，连接轴31转动设置于壳体上，凸轮32套设于连接轴31上，转接件33与丝杠轴 22相连接，转接件33能抵接于凸轮32的异形面321；旋转驱动部件1设置于壳体上，旋转驱动部件1被配置为驱动连接轴31并带动凸轮32旋转，转接件33在凸轮32的异形面321的驱动作用下带动丝杠轴22相对于丝母21转动，使转接件33能在丝杠轴22的带动下沿丝杠轴22的轴向平移。
本实施例提供的离合器执行机构，通过设置壳体，壳体对平移传动部件2、旋转传动部件3和旋转驱动部件1起到了整体支撑的作用；通过平移传动部件2、旋转传动部件3和旋转驱动部件1之间的配合，旋转驱动部件1能够通过旋转传动部件3带动丝杠轴22相对丝母21旋转，同时丝杠轴22能沿自身轴线方向做直线运动，从而驱动转接件33平移以产生轴向推力；平移传动部件2为丝杠螺母副结构，执行效率较高且执行可靠性较好；通过设置旋转传动部件3，将旋转驱动部件1的回转运动传递至平移传动部件2，与现有技术中的涡轮蜗杆式的离合器执行机构相比，通过凸轮32的异形面321推动转接件33旋转，结构简单，设计新颖，且制造成本低。
在本实施例中，如图1所示，凸轮32的异形面321为沿连接轴31的轴线方向分布的螺旋面，呈螺旋状的异形面321的中心线与连接轴31的轴线重合。当然，在其他实施例中，凸轮32的异形面321的结构还可以设置为其他形状，只要能够实现在凸轮32旋转时能驱动转接件33旋转均可以被采用。
可选地，凸轮32和连接轴31为一体式结构。采用这种设置，可以节省凸轮32和连接轴31进行组装的环节，提高加工效率。
在连接轴31与壳体之间还设置有支撑轴承34，如图1-图3所示，在连接轴31的两侧均套设有支撑轴承34，且支撑轴承34均固定于壳体上，支撑轴承34可以起到支撑连接轴31的作用，且能够减小连接轴31相对于壳体转动时的摩擦，保证连接轴31转动过程的顺畅性。
如图4所示，转接件33远离丝杠轴22的一端设置有安装销331，安装销331上套设有抵接轴承332，抵接轴承332的圆弧面能抵接于异形面321。采用这种设置方式，可以减下转接件33与凸轮32相对运动时产生的磨擦，降低磨损，且还能减少两者之间相对运动时产生的热量，延长凸轮32与转接件33的使用寿命。
如图3所示，该离合器执行机构还包括推力轴承4，推力轴承4设置于转接件33远离丝杠轴22的一侧。通过设置推力轴承4，能够将转接件33的轴向位移传递至离合器，以实现离合器的结合状态。示例性地，推力轴承4由转接件33上的环形台阶和端平面进行限位。
如图5所示，丝母21的内孔中设有内螺旋槽211，丝杠轴22外周设有与内 螺旋槽211相匹配的外螺旋槽2211，内螺旋槽211与外螺旋槽2211之间沿外螺旋槽2211的延伸方向设置有多个滚珠23。通过设置滚珠23，可以减小丝母21与丝杠轴22之间的转动阻力，减小两者之间相对运动时的磨损，延长丝母21与丝杠轴22的使用寿命。
可选地，内螺旋槽211的螺纹升角
Figure PCTCN2022088730-appb-000003
外螺旋槽2211的螺纹升角
Figure PCTCN2022088730-appb-000004
在离合器从接合状态转化为分离状态时，离合器的复位弹簧会驱动推力轴承4向靠近转接件33的方向运动，将内螺旋槽211设置为其螺纹升角
Figure PCTCN2022088730-appb-000005
Figure PCTCN2022088730-appb-000006
转接件33在推力轴承4的推动作用下，能够带动丝杠轴22沿其轴线方向运动，从而使丝杠轴22能相对丝母21转动，以使丝杠轴22和转接件33复位，可以省略复位结构的设置，简化该离合器执行机构的整体结构，减小其整体体积，节约制造成本。
如图5所示，丝杠轴22包括相连接的螺纹部221和连接部222，连接部222的外径大于螺纹部221的外径，两者相连形成阶梯轴结构，连接部222设置为连接转接件33，外螺旋槽2211设置于螺纹部221的外周。在本实施例中，在连接部222上沿其周向间隔设置有多个第一连接孔，在转接件33上对应第一连接孔设置有多个第二连接孔，连接件依次穿设于第一连接孔和第二连接孔内，从而实现连接部222和转接件33之间的连接。可选地，在本实施例中，连接部222为连接法兰，连接更加稳固。
可选地，第一连接孔和第二连接孔中的一个为通孔，第一连接孔和第二连接孔中的另一个为螺纹孔，连接件为连接螺栓，螺栓连接具有加工简单、拆装方便的优势。当然，丝杠轴22与转接件33还可以采用其他方式进行连接，如焊接或者卡接，本实施例对此不作限定。
丝杠轴22的中心设置有中心孔，中心孔可设置为避让输入轴，且能起到减少该离合器执行机构的重量的效果。
如图1、图2和图6所示，旋转驱动部件1包括执行电机11，执行电机11的转子轴112与连接轴31传动连接。转子轴112和连接轴31中的一个设置有平键111，转子轴112和连接轴31中的另一个设置有平键槽311，平键111能够插接于平键槽311内，保证连接轴31与转子轴112之间的稳定连接，以使连接轴31随转子轴112的旋转而转动。在本实施例中，转子轴112上设置有平键111，连接轴31上设置有平键槽311。
旋转驱动部件1还包括执行控制器12，执行控制器12设置为接收并处理分动器发送的控制信号，然后输出给执行电机11。示例性地，执行控制器12通过连接件固定于执行电机11上。执行电机11负责按照执行控制器12的命令使其转子轴112转动预设角度，转子轴112带动连接轴31和凸轮32转动预设角度， 同时凸轮32的异形面321推动转接件33带动丝杠轴22相对丝母21旋转；通过丝杠轴22与丝母21之间的配合，能够将丝杠轴22的转动转化为丝杠轴22沿其轴线方向的平移，驱动转接件33沿丝杠轴22的轴线方向平移，以推动推力轴承4向靠近离合器的方向运动，实施离合器的压紧操作。
下面结合图1-图8简述离合器结合或者分离的工作原理：
(1)离合器由分离状态转化为结合状态：
执行控制器12设置为接收分动器接合离合器控制信号，控制执行电机11的转子轴112正转(如图1所示的方向)，通过执行电机11驱动连接轴31和凸轮32正转，凸轮32的异形面321能够推动转接件33的上端向左运动，从而带动丝杠轴22相对丝母21旋转，同时，丝杠轴22会沿其轴线方向平移，以带动转接件33向靠近推力轴承4的方向运动，从而推动推力轴承4向靠近离合器的方向运动，直至推力轴承4与离合器接触，并推动离合器变成接合状态，通过调节执行电机11的输出扭矩即可调节离合器传递扭矩的大小。
(2)离合器由结合状态转化为分离状态：
执行控制器12设置为接收分动器接合离合器控制信号，控制执行电机11的转子轴112反转(如图1所示方向的反方向)，通过执行电机11驱动连接轴31和凸轮32反转，凸轮32与转接件33的上端会存在一个间隔；此时，离合器的复位弹簧会推动推力轴承4向靠近丝母21的方向运动，从而带动转接件33和丝杠轴22产生轴向平移运动，由于内螺旋槽211的螺纹升角
Figure PCTCN2022088730-appb-000007
转接件33在推力轴承4的推动作用下，能够带动丝杠轴22沿其轴线方向运动，从而使丝杠轴22能相对丝母21转动，以使丝杠轴22和转接件33复位，离合器转化为分离状态。
本实施例还提供一种车辆，通过应用上述的离合器执行机构，结构紧凑，执行效率高，可以提升用户使用体验感。

Claims (10)

  1. 一种离合器执行机构，包括：
    壳体；
    平移传动部件(2)，包括丝母(21)和螺接于所述丝母(21)的内孔中的丝杠轴(22)，所述丝母(21)固设于所述壳体上；
    旋转传动部件(3)，包括连接轴(31)、凸轮(32)和转接件(33)，所述连接轴(31)转动设置于所述壳体上，所述凸轮(32)套设于所述连接轴(31)上，所述转接件(33)与所述丝杠轴(22)相连接，所述转接件(33)能抵接于所述凸轮(32)的异形面(321)；
    旋转驱动部件(1)，设置于所述壳体上，所述旋转驱动部件(1)被配置为驱动所述连接轴(31)并带动所述凸轮(32)旋转，所述转接件(33)在所述凸轮(32)的所述异形面(321)的驱动作用下带动所述丝杠轴(22)相对于所述丝母(21)转动，使所述转接件(33)能在所述丝杠轴(22)的带动下沿所述丝杠轴(22)的轴向平移。
  2. 根据权利要求2所述的离合器执行机构，其中，所述凸轮(32)的所述异形面(321)为沿所述连接轴(31)的轴线方向分布的螺旋面。
  3. 根据权利要求1所述的离合器执行机构，其中，所述凸轮(32)和所述连接轴(31)为一体式结构。
  4. 根据权利要求1所述的离合器执行机构，其中，所述丝母(21)的内孔中设有内螺旋槽(211)，所述丝杠轴(22)外周设有与所述内螺旋槽(211)相匹配的外螺旋槽(2211)，所述内螺旋槽(211)与所述外螺旋槽(2211)之间沿所述外螺旋槽(2211)的延伸方向设置有多个滚珠(23)。
  5. 根据权利要求4所述的离合器执行机构，其中，所述内螺旋槽(211)的螺纹升角
    Figure PCTCN2022088730-appb-100001
    所述外螺旋槽(2211)的螺纹升角
    Figure PCTCN2022088730-appb-100002
  6. 根据权利要求1所述的离合器执行机构，其中，所述转接件(33)远离所述丝杠轴(22)的一端设置有安装销(331)，所述安装销(331)上套设有抵接轴承(332)，所述抵接轴承(332)的圆弧面能抵接于所述异形面(321)。
  7. 根据权利要求1所述的离合器执行机构，还包括推力轴承(4)，所述推力轴承(4)设置于所述转接件(33)上远离所述丝杠轴(22)的一侧。
  8. 根据权利要求1-7中任一项所述的离合器执行机构，其中，所述旋转驱动部件(1)包括执行电机(11)，所述执行电机(11)的转子轴(112)与所述连接轴(31)传动连接。
  9. 根据权利要求8所述的离合器执行机构，其中，所述转子轴(112)和所 述连接轴(31)中的一个设置有平键(111)，所述转子轴(112)和所述连接轴(31)中的另一个设置有平键槽(311)，所述平键(111)能够插接于所述平键槽(311)内。
  10. 一种车辆，包括如权利要求1-9任一项所述的离合器执行机构。
PCT/CN2022/088730 2021-04-28 2022-04-24 离合器执行机构及车辆 Ceased WO2022228337A1 (zh)

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