WO2020187180A1 - 一种齿嵌式电磁离合器 - Google Patents

一种齿嵌式电磁离合器 Download PDF

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Publication number
WO2020187180A1
WO2020187180A1 PCT/CN2020/079481 CN2020079481W WO2020187180A1 WO 2020187180 A1 WO2020187180 A1 WO 2020187180A1 CN 2020079481 W CN2020079481 W CN 2020079481W WO 2020187180 A1 WO2020187180 A1 WO 2020187180A1
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WO
WIPO (PCT)
Prior art keywords
movable
armature
fixed
bearing seat
sleeve
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PCT/CN2020/079481
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English (en)
French (fr)
Inventor
余平
靳海涛
裴正强
夜玉霞
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精进电动科技股份有限公司
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Application filed by 精进电动科技股份有限公司 filed Critical 精进电动科技股份有限公司
Priority to US17/439,213 priority Critical patent/US11686356B2/en
Priority to JP2021555340A priority patent/JP7291237B2/ja
Priority to EP20773601.8A priority patent/EP3910209B1/en
Publication of WO2020187180A1 publication Critical patent/WO2020187180A1/zh

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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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
    • F16D27/118—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with interengaging jaws or gear teeth
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
    • F16D27/108—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
    • 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
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/14—Details

Definitions

  • the utility model relates to the technical field of clutches, in particular to a tooth embedded electromagnetic clutch.
  • Tooth-type electromagnetic clutches are widely used in automobiles.
  • a fixed armature 10 is sleeved on the outer side of the sleeve 12, a gap is provided between the fixed armature 10 and the fixed tooth sleeve 12, and the position is fixed, the fixed armature 10 is provided with an electromagnetic coil 11, and the movable tooth sleeve 5 is rotatably sleeved with a movable The armature 8 and the movable armature 8 can move along the axial direction with the movable tooth sleeve 5. After the electromagnetic coil 11 is energized, the movable armature 8 is attracted to the fixed armature 10 to make the movable tooth sleeve 5 and the fixed tooth sleeve 12 mesh.
  • a bearing 1 is sleeved on the outer circumference of the movable gear sleeve 5, the bearing 1 is embedded in the bearing seat 7, the movable armature 8 is connected to the front end of the bearing seat 7, and the rear end of the bearing seat 7 is provided with a positioning surface.
  • the positioning surface of the bearing seat 7 is positioned and attached to the first end cover 6, and the front end of the first end cover 6 is a vertical plane that matches the positioning surface of the bearing seat 7.
  • the purpose of the present invention is to provide a tooth-embedded electromagnetic clutch, which restricts the bearing seat and end cover of the movable tooth sleeve through the positioning pin and the positioning hole, and the bearing seat and the end cover of the movable tooth sleeve can be opposed to each other Axial movement, no relative rotation movement, avoiding friction between the two.
  • the utility model provides a tooth-embedded electromagnetic clutch, which comprises a movable tooth sleeve and a fixed tooth sleeve that mesh with each other.
  • the outer side of the movable tooth sleeve is provided with a first end cover, and the outer circumference of the movable tooth sleeve is provided with A bearing, the bearing is embedded in the bearing seat, the rear end of the bearing seat is provided with a positioning surface, the front end of the first end cover is a vertical plane that matches the positioning surface of the bearing seat, and the first The front end of one end cover is provided with a positioning pin, the rear end of the bearing seat is matched with a positioning hole, and the positioning pin is inserted into the positioning hole to limit the relative axis between the bearing seat and the first end cover Move in the direction without relative rotation.
  • more than one positioning pin is provided; when multiple positioning pins are provided, the positioning pin is provided along the circumferential direction of the first end cover.
  • the rear end of the positioning pin is threadedly installed and fixed on the front end of the first end cover, and the front end of the positioning pin is provided with a groove, a cross groove, or an inner hexagon groove for cooperating installation
  • the tool installs the positioning pin.
  • a movable armature is sleeved on the outer side of the movable tooth sleeve, and the movable armature can move along the axial direction with the movable tooth sleeve, and the movable armature is connected with the bearing seat by a rivet 1.
  • a radial flange is provided on the outer circumference of the bearing seat, and a mounting hole is provided on the flange corresponding to the rivet 1.
  • a fixed armature is sleeved on the outer side of the fixed gear sleeve, and the front end of the fixed armature is provided with a buffer for attracting and engaging with the movable armature and to leave a space between the fixed armature and the movable armature.
  • a buffer component of the gap, the buffer component is injection molded and fixed at the front end of the fixed armature.
  • the buffer member is a buffer gasket provided at the front end of the fixed armature, or a plurality of buffer blocks provided at the front end of the fixed armature in a circumferential direction.
  • the buffer pad or the buffer block is in an inverted T shape.
  • an electromagnetic coil is provided in the fixed armature, and after the electromagnetic coil is energized, the movable armature is attracted to the fixed armature, so that the movable tooth sleeve and the fixed tooth sleeve are engaged, so The height of the buffer member meets the requirement that the gap between the movable armature and the fixed armature is within the range of 0.1-1.5 mm.
  • the movable gear sleeve is sleeved on the first shaft through a spline, the movable gear sleeve can move along the axial direction of the first shaft, the front end of the first shaft is provided with a shaft pressing plate, the The axial pressure plate is connected with the movable gear sleeve through a spring, and when the electromagnetic coil is de-energized, the elastic force of the spring separates the movable gear sleeve from the fixed gear sleeve.
  • a locating pin is added to the bearing seat of the movable gear sleeve.
  • the other end of the locating pin is installed on the end cover.
  • the function of the locating pin is circumferential positioning to ensure that the bearing seat and end cover do not rotate, only axial reciprocating movement is avoided. There is friction between the two.
  • the buffer gasket or the buffer block is fixed on the fixed armature by injection molding, which improves the production efficiency and at the same time increases the contact area between the buffer gasket or the buffer block and the movable armature.
  • Fig. 1 is a schematic diagram of the structure of a tooth embedded electromagnetic clutch in the prior art
  • Figure 2 is a schematic diagram of the structure of the toothed electromagnetic clutch in the embodiment of the utility model
  • Figure 3 is a schematic structural view of the fixed gear sleeve in the embodiment of the utility model
  • Figure 4 is a schematic structural view of the movable gear sleeve in the embodiment of the utility model
  • Figure 5 is a schematic diagram of the assembly of the movable gear sleeve and the movable armature in the embodiment of the utility model.
  • the utility model provides a tooth embedded electromagnetic clutch, which adds a positioning on the bearing seat of the movable gear sleeve
  • the other end of the locating pin is installed on the end cover.
  • the function of the locating pin is to locate in a circle to ensure that the bearing seat and the end cover do not rotate, and only move back and forth in the axial direction to avoid friction between the two.
  • Figures 2, 3, 4, and 5 show the first embodiment of the utility model.
  • a toothed electromagnetic clutch is provided, which includes a movable tooth sleeve 5 and a fixed tooth sleeve 12 that mesh with each other for transmission ,
  • the outer side of the movable gear sleeve 5 is provided with a first end cover 6,
  • the outer circumference of the movable gear sleeve 5 is provided with a bearing 1
  • the bearing 1 is embedded in the bearing seat 7, and the rear end of the bearing seat 7 is provided with a positioning surface.
  • the front end of one end cover 6 is a vertical plane that fits with the positioning surface of the bearing housing 7, the front end of the first end cover 6 is provided with a positioning pin 15, the rear end of the bearing housing 7 is matched with a positioning hole, and the positioning pin 15 is inserted for positioning.
  • the hole restricts the relative axial movement between the bearing seat 7 and the first end cover 6, without relative rotational movement, and avoiding friction between the two.
  • one positioning pin 15 can be provided to limit the bearing seat 7 in the circumferential direction.
  • multiple positioning pins 15 can also be provided.
  • the positioning pins 15 are arranged along the circumferential direction of the first end cover 6 and can be evenly distributed on the front end of the first end cover 6.
  • the rear end of the positioning pin 15 is threadedly installed and fixed on the front end of the first end cover 6, and the front end of the positioning pin 15 is provided with a groove, a cross groove, or an inner hexagon groove for matching with the installation tool Install the positioning pin 15.
  • the groove is provided to cooperate with the installation tool, so that the diameter of the positioning pin 15 is not increased, and the axial movement of the positioning pin 15 in the positioning hole of the bearing seat 7 is not hindered, and the installation is convenient.
  • a movable armature 8 is sleeved on the outer side of the movable gear sleeve 5, and the movable armature 8 can move along the axial direction with the movable gear sleeve 5.
  • the movable armature 8 and the bearing seat 7 are connected by rivets 16, as shown in Figs.
  • the rivet connection method can improve the anti-loosening performance between the movable armature 8 and the bearing seat 7 and increase the reliability of the entire system.
  • a radial flange is provided on the outer circumference of the bearing seat 7, and a mounting hole is provided on the flange corresponding to the rivet 16.
  • the outer side of the fixed gear sleeve 12 is sleeved with a fixed armature 10, and the front end of the fixed armature 10 is provided with a buffer for attracting and engaging with the movable armature 8 and leaving a space between the fixed armature 10 and the movable armature 8.
  • the buffer component of the gap is injection-fixed on the front end of the fixed armature 10.
  • the cushioning component avoids direct impact between the fixed armature 10 and the movable armature 8; on the other hand, when the fixed gear sleeve 12 is engaged with the movable gear sleeve 5, it is ensured that there is a certain gap between the fixed armature 10 and the movable armature 8 to avoid the fixed armature. 10 and the movable armature 8 cannot be separated due to remanence after being attached.
  • the buffer member is a buffer washer 9 provided at the front end of the fixed armature 10.
  • the cushion gasket 9 is fixed on the fixed armature 10 by injection molding. Compared with the bolt connection in the prior art, the production efficiency is improved, and the contact area between the cushion gasket 9 and the movable armature 10 is increased.
  • the cushion gasket 9 is in an inverted T shape, so that the firmness of the cushion gasket 9 on the fixed armature 10 can be improved.
  • an electromagnetic coil 11 is provided in the fixed armature 10. After the electromagnetic coil 11 is energized, the movable armature 8 is attracted to the fixed armature 10, so that the movable gear sleeve 5 and the fixed gear sleeve 12 are engaged, and the height of the cushion It is satisfied that the gap between the movable armature 8 and the fixed armature 10 is in the range of 0.1-1.5 mm.
  • the movable gear sleeve 5 is sleeved on the first shaft 4 through splines.
  • the movable gear sleeve 5 can move along the axial direction of the first shaft 4.
  • the front end of the first shaft 4 is provided with an axial pressure plate 3, and the axial pressure plate 3 is connected to the movable shaft 4 through a spring 2.
  • the gear sleeve 5 is connected. When the electromagnetic coil 11 is powered off, the elastic force of the spring 2 separates the movable gear sleeve 5 from the fixed gear sleeve 12.
  • the function of the axial pressure plate 3 is to keep the spring 2 in a compressed state. With the separation and coupling of the clutch, the compression amount of the spring 2 will change and the elastic force value will also change.
  • the positioning surface of the bearing seat 7 is attached to the first end cover 6, thereby determining the position of the movable armature 8 in the disengaged state, so that the movable armature 8 is separated from the fixed armature 10
  • the rear gap is in the range of 3.6-4 mm, which ensures that the fixed armature 10 has sufficient attraction force after the electromagnetic coil 11 is energized, and the movable armature 8 is quickly attracted.
  • the clutch changes from the separated state to the coupled state; when the coupled state is maintained, the electromagnetic coil 11 needs to be energized and generated
  • the electromagnetic force of is greater than the elastic force at this time; when in the combined state, the buffer gasket 9 is attached to the movable armature 8 to ensure that the gap between the movable armature 8 and the fixed armature 10 is within the range of 0.3-0.5 mm.
  • the utility model keeps the gap between the two armatures within a preset range after the clutch is separated, ensuring that the clutch has sufficient suction force when the clutch is engaged, and realizes rapid suction and engagement.
  • the buffer gasket 9 on the fixed armature 10 is in close contact with the movable armature 8, and there is no relative rotation between the movable armature 8 and the fixed armature 10 to avoid the problem of mutual friction; at the same time, the fixed gear sleeve 12 and the movable armature
  • the gear sleeve 5 meshes, rotates synchronously, and transmits torque.
  • only the fixed gear sleeve 12 is in contact with the tooth flank of the end face tooth of the movable gear sleeve 5, and the tooth root does not contact the tooth top, which can avoid the extra shaft caused by electromagnetic force.
  • the forward load acts on the first shaft 4 and the second shaft 14 to reduce the load on the bearings on the two shafts.
  • the toothed electromagnetic clutch in this embodiment is applied to an electric drive system for a new energy vehicle, with compact structure, no auxiliary execution structure, and convenient operation.
  • the system controls the transmission and disconnection of power torque.
  • the utility model of the structure has a simple structure and good assembly manufacturability.
  • the buffer component is a plurality of buffer blocks arranged at the front end of the fixed armature 10 along the circumferential direction.
  • the buffer block is also in an inverted T shape, so that the firmness of the buffer block on the fixed armature 10 can be improved.

Abstract

一种齿嵌式电磁离合器，用于解决现有齿嵌式电磁离合器中活动齿套的轴承座与端盖容易发生摩擦的技术问题。齿嵌式电磁离合器包括相互啮合传动的活动齿套（5）和固定齿套（12），活动齿套（5）的外侧设置有第一端盖（6），活动齿套（5）的外圆周上设置有轴承（1），轴承（1）嵌装在轴承座（7）内，轴承座（7）的后端设置有定位面，第一端盖（6）的前端为与轴承座（7）的定位面配合的竖直平面，第一端盖（6）的前端设置有定位销（15），轴承座（7）的后端配合设置有定位孔，定位销（15）插入定位孔中限制轴承座（7）与第一端盖（6）之间可相对轴向移动，不发生相对旋转运动，避免了二者之间发生摩擦。

Description

一种齿嵌式电磁离合器 技术领域
本实用新型涉及离合器技术领域，特别涉及一种齿嵌式电磁离合器。
发明背景
齿嵌式电磁离合器在汽车中的使用比较广泛，现有技术中有一种类型的齿嵌式电磁离合器结构如图1所示，包括相互啮合传动的活动齿套5和固定齿套12，固定齿套12的外侧套装有固定衔铁10，固定衔铁10与固定齿套12之间设置有间隙、且位置固定，固定衔铁10内设置有电磁线圈11，活动齿套5的外侧可转动地套装有活动衔铁8，活动衔铁8可随活动齿套5沿轴向移动，电磁线圈11通电后，将活动衔铁8吸至固定衔铁10上，使活动齿套5和固定齿套12啮合。
活动齿套5的外圆周上套设有轴承1，轴承1嵌装在轴承座7内，活动衔铁8与轴承座7的前端连接，轴承座7的后端设有定位面。轴承座7的定位面与第一端盖6定位贴合，第一端盖6的前端为与轴承座7的定位面配合的竖直平面。
在轴承1的支撑作用下，当活动衔铁8吸至固定衔铁10上时，轴承座7是不会跟随活动齿套5旋转的，当活动衔铁8与固定衔铁10分开时，活动齿套5也就与固定齿套12脱离啮合，但是活动齿套5仍然会继续旋转，不能马上停止，尽管活动齿套5向轴承座7传递的转矩很小，此时轴承座7也会跟随活动齿套5旋转，轴承座7也就与第一端盖6产生摩擦，容易造成第一端盖6损坏。
发明内容
针对上述问题，本实用新型的目的在于提供一种齿嵌式电磁离合器，通过定位销和定位孔来限制活动齿套的轴承座与端盖，活动齿套的轴承座与端盖之间可相对轴向移动，不发生相对旋转运动，避免了二者之间发生摩擦。
为了实现上述目的，本实用新型采用以下技术方案：
本实用新型提供一种齿嵌式电磁离合器，包括相互啮合传动的活动齿套和固定齿套，所述活动齿套的外侧设置有第一端盖，所述活动齿套的外圆周上设置有轴承，所述轴承嵌装在轴承座内，所述轴承座的后端设置有定位面，所述第一端盖的前端为与所述轴承座的定位面配合的竖直平面，所述第一端盖的前端设置有定位销，所述轴承座的后端配合设置有定位孔，所述定位销插入所述定位孔中限制所述轴承座与所述第一端盖之间可相对轴向移动，不发生相对旋转运动。
可选地，所述定位销设置一个以上；设置多个所述定位销时，所述定位销沿所述第一端盖的周向设置。
可选地，所述定位销的后端螺纹安装固定在所述第一端盖的前端，所述定位销的前端设置有一字沟槽、或十字沟槽、或内六角沟槽用于配合安装工具安装所述定位销。
可选地，所述活动齿套的外侧套装有活动衔铁，所述活动衔铁可随所述活动齿套沿轴向移动，所述活动衔铁与所述轴承座通过铆钉1连接。
可选地，所述轴承座的外圆周上设置有径向的凸缘，所述凸缘上对应所述铆钉1设置有安装孔。
可选地，所述固定齿套的外侧套装有固定衔铁，所述固定衔铁的前端设置有用于与所述活动衔铁相吸合时起缓冲作用且使所述固定衔铁和活动衔铁之间留有间隙的缓冲部件，所述缓冲部件注塑固定在所述固定衔铁的前端。
可选地，所述缓冲部件为设置于所述固定衔铁前端的缓冲垫片，或沿周向设置于所述固定衔铁前端的多个缓冲块。
可选地，所述缓冲垫片或缓冲块呈倒置T字型。
可选地，所述固定衔铁内设置有电磁线圈，所述电磁线圈通电后，将所述活动衔铁吸至所述固定衔铁上，使所述活动齿套和所述固定齿套相啮合，所述缓冲部件的高度满足所述活动衔铁与所述固定衔铁吸合后的间隙在0.1-1.5mm范围内。
可选地，所述活动齿套通过花键套装在第一轴上，所述活动齿套可沿所述第一轴的轴线方向移动，所述第一轴的前端设置有轴压板，所述轴压板通过弹簧与所述活动齿套连接，当所述电磁线圈断电后，所述弹簧的弹力使所述活动齿套与所述固定齿套分开。
本实用新型齿嵌式电磁离合器的优点及有益效果是：
在活动齿套的轴承座上增加一个定位销，定位销另一端安装在端盖上，定位销的作用是圆周定位，保证轴承座与端盖不发生旋转运动，只有轴向往复移动，避免了二者之间发生摩擦。
对轴承座进行优化设计，使得轴承座与活动衔铁之间采用铆钉连接的方法连接在一起，提高防松性能，增加了整个系统的可靠性。
采用注塑的方式将缓冲垫片或缓冲块固定在固定衔铁上面，提高了生产效率，同时增加了缓冲垫片或缓冲块与活动衔铁的接触面积。
附图简要说明
图1为现有技术中的齿嵌式电磁离合器的结构示意图；
图2为本实用新型实施例中的齿嵌式电磁离合器的结构示意图；
图3为本实用新型实施例中的固定齿套的结构示意图；
图4为本实用新型实施例中的活动齿套的结构示意图；
图5为本实用新型实施例中的活动齿套与活动衔铁的装配示意图。
图中：1.轴承；2.弹簧；3.轴压板；4.第一轴；5.活动齿套；501.活动齿套端面齿；6.第一端盖；7.轴承座；8.活动衔铁；9.缓冲垫片；10.固定衔铁；11.电磁线圈；12.固定齿套；121.固定齿套端面齿；13.第二端盖；14.第二轴；15.定位销；16.铆钉。
实施本发明的方式
本实用新型的设计构思是：
针对现有技术中活动齿套的轴承座与端盖之间容易发生摩擦导致端盖损坏的缺陷，本实用新型提供了一种齿嵌式电磁离合器，在活动齿套的轴承座上增加一个定位销，定位销另一端安装在端盖上，定位销的作用是圆周定位，保证轴承座与端盖不发生旋转运动，只有轴向往复移动，避免了二者之间发生摩擦。
为使本实用新型的目的、技术方案和优点更加清楚，下面将结合附图对本实用新型实施方式作进一步地详细描述。
实施例1
如图2、图3、图4、图5所示为本实用新型实施例1，在该实施例中提供一种齿嵌式电磁离合器，包括相互啮合传动的活动齿套5和固定齿套12，活动齿套5的外侧设置有第一端盖6，活动齿套5的外圆周上设置有轴承1，轴承1嵌装在轴承座7内，轴承座7的后端设置有定位面，第一端盖6的前端为与轴承座7的定位面配合的竖直平面，第一端盖6的前端设置有定位销15，轴承座7的后端配合设置有定位孔，定位销15插入定位孔中限制轴承座7与第一端盖6之间可相对轴向移动，不发生相对旋转运动，避免了二者之间发生摩擦。
因为活动齿套5向轴承座7传递的转矩很小，所以定位销15可以设置一个，就能够起到对轴承座7周向限位的作用。
当然也可以设置多个定位销15，设置多个定位销15时，定位销15沿第一端 盖6的周向设置，可以均布在第一端盖6的前端。
如图1所示，定位销15的后端螺纹安装固定在第一端盖6的前端，定位销15的前端设置有一字沟槽、或十字沟槽、或内六角沟槽用于配合安装工具安装定位销15。
设置沟槽来配合安装工具，能够不增加定位销15的直径，保证定位销15在轴承座7的定位孔中轴向移动不受阻碍，并且安装方便。
活动齿套5的外侧套装有活动衔铁8，活动衔铁8可随活动齿套5沿轴向移动，活动衔铁8与轴承座7通过铆钉16连接，如图1、图5所示。
铆钉连接方式相对于现有技术中螺栓连接方式，可以提高活动衔铁8与轴承座7之间的防松性能，增加了整个系统的可靠性。
为了方便设置铆钉16，如图1所示，轴承座7的外圆周上设置有径向的凸缘，凸缘上对应铆钉16设置有安装孔。
如图1所示，固定齿套12的外侧套装有固定衔铁10，固定衔铁10的前端设置有用于与活动衔铁8相吸合时起缓冲作用且使固定衔铁10和活动衔铁8之间留有间隙的缓冲部件，缓冲部件注塑固定在固定衔铁10的前端。
缓冲部件一方面避免固定衔铁10与活动衔铁8的直接撞击；另一方面，在固定齿套12与活动齿套5啮合时保证固定衔铁10与活动衔铁8之间有一定的间隙，避免固定衔铁10与活动衔铁8贴合后因剩磁而无法分开。
在本实施例中，缓冲部件为设置于固定衔铁10前端的缓冲垫片9。采用注塑的方式将缓冲垫片9固定在固定衔铁10上面，相对于现有技术中螺栓连接方式，提高了生产效率，同时增加了缓冲垫片9与活动衔铁10的接触面积。
优选地，缓冲垫片9呈倒置T字型，这样可以提高缓冲垫片9在固定衔铁10上的牢固度。
如图1所示，固定衔铁10内设置有电磁线圈11，电磁线圈11通电后，将活动衔铁8吸至固定衔铁10上，使活动齿套5和固定齿套12相啮合，缓冲部件的高度满足活动衔铁8与固定衔铁10吸合后的间隙在0.1-1.5mm范围内。
活动齿套5通过花键套装在第一轴4上，活动齿套5可沿第一轴4的轴线方向移动，第一轴4的前端设置有轴压板3，轴压板3通过弹簧2与活动齿套5连接，当电磁线圈11断电后，弹簧2的弹力使活动齿套5与固定齿套12分开。
轴压板3的作用是使弹簧2一直处于压缩状态，随着离合器的分开与结合，弹 簧2的压缩量会发生变化，弹力值也会变化。
离合器处于分离状态时，在弹簧2的预压力下，轴承座7的定位面与第一端盖6贴合，从而确定了分离状态时活动衔铁8的位置，使活动衔铁8与固定衔铁10分离后的间隙在3.6-4mm范围内，该间隙保证电磁线圈11通电后使固定衔铁10具有足够的吸合力，快速吸合活动衔铁8。电磁线圈11产生的电磁力大于弹簧2的弹力以及活动齿套5与第一轴4的摩擦力时，离合器由分离状态变更为结合状态；当保持结合状态时，需要电磁线圈11通电，且产生的电磁力大于此时的弹力；处于结合状态时，缓冲垫片9与活动衔铁8贴合，保证活动衔铁8与固定衔铁10吸合后的间隙在0.3-0.5mm范围内。本实用新型通过活动衔铁与端盖之间的准确定位，使离合器分离后两个衔铁之间的间隙处于预设范围内，保证离合器吸合时具有足够的吸合力，实现快速吸合。
在离合器吸合时，固定衔铁10上的缓冲垫片9与活动衔铁8紧紧贴合，活动衔铁8与固定衔铁10之间没有相对转动，避免相互摩擦的问题；同时固定齿套12与活动齿套5相啮合，同步旋转，并传递扭矩，此时只有固定齿套12与活动齿套5端面齿的齿侧面接触，齿根与齿顶没有接触，这样可以避免了电磁力引起的额外轴向载荷作用到第一轴4和第二轴14上，减轻这两根轴上轴承的负载情况。
本实施例中的齿嵌式电磁离合器应用于新能源车用电驱动系统上，结构紧凑、无辅助执行结构、且操作方便，该系统控制着动力扭矩的传递和断开。本结构实用新型结构简单，装配制造性良好。
实施例2
与实施例1所不同的是，本实施例中缓冲部件为沿周向设置于固定衔铁10前端的多个缓冲块。
优选地，缓冲块也是呈倒置T字型，这样可以提高缓冲块在固定衔铁10上的牢固度。
本实施例中齿嵌式电磁离合器的其他结构与实施例1中相同，此处不再重复描述。
以上所述，仅为本实用新型的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易 想到变化或替换，都应涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种齿嵌式电磁离合器，包括相互啮合传动的活动齿套(5)和固定齿套(12)，所述活动齿套(5)的外侧设置有第一端盖(6)，所述活动齿套(5)的外圆周上设置有轴承(1)，所述轴承(1)嵌装在轴承座(7)内，所述轴承座(7)的后端设置有定位面，所述第一端盖(6)的前端为与所述轴承座(7)的定位面配合的竖直平面，其特征在于，所述第一端盖(6)的前端设置有定位销(15)，所述轴承座(7)的后端配合设置有定位孔，所述定位销(15)插入所述定位孔中限制所述轴承座(7)与所述第一端盖(6)之间可相对轴向移动，不发生相对旋转运动。
  2. 根据权利要求1所述的齿嵌式电磁离合器，其特征在于，所述定位销(15)设置一个以上；设置多个所述定位销(15)时，所述定位销(15)沿所述第一端盖(6)的周向设置。
  3. 根据权利要求1所述的齿嵌式电磁离合器，其特征在于，所述定位销(15)的后端螺纹安装固定在所述第一端盖(6)的前端，所述定位销(15)的前端设置有一字沟槽、或十字沟槽、或内六角沟槽用于配合安装工具安装所述定位销(15)。
  4. 根据权利要求1所述的齿嵌式电磁离合器，其特征在于，所述活动齿套(5)的外侧套装有活动衔铁(8)，所述活动衔铁(8)可随所述活动齿套(5)沿轴向移动，所述活动衔铁(8)与所述轴承座(7)通过铆钉(16)连接。
  5. 根据权利要求4所述的齿嵌式电磁离合器，其特征在于，所述轴承座(7)的外圆周上设置有径向的凸缘，所述凸缘上对应所述铆钉(16)设置有安装孔。
  6. 根据权利要求4所述的齿嵌式电磁离合器，其特征在于，所述固定齿套(12)的外侧套装有固定衔铁(10)，所述固定衔铁(10)的前端设置有用于与所述活动衔铁(8)相吸合时起缓冲作用且使所述固定衔铁(10)和活动衔铁(8)之间留有间隙的缓冲部件，所述缓冲部件注塑固定在所述固定衔铁(10)的前端。
  7. 根据权利要求6所述的齿嵌式电磁离合器，其特征在于，所述缓冲部件为设置于所述固定衔铁(10)前端的缓冲垫片(9)，或沿周向设置于所述固定衔铁(10)前端的多个缓冲块。
  8. 根据权利要求7所述的齿嵌式电磁离合器，其特征在于，所述缓冲垫片(9)或缓冲块呈倒置T字型。
  9. 根据权利要求6所述的齿嵌式电磁离合器，其特征在于，所述固定衔铁(10) 内设置有电磁线圈(11)，所述电磁线圈(11)通电后，将所述活动衔铁(8)吸至所述固定衔铁(10)上，使所述活动齿套(5)和所述固定齿套(12)相啮合，所述缓冲部件的高度满足所述活动衔铁(8)与所述固定衔铁(10)吸合后的间隙在0.1-1.5mm范围内。
  10. 根据权利要求9所述的齿嵌式电磁离合器，其特征在于，所述活动齿套(5)通过花键套装在第一轴(4)上，所述活动齿套(5)可沿所述第一轴(4)的轴线方向移动，所述第一轴(4)的前端设置有轴压板(3)，所述轴压板(3)通过弹簧(2)与所述活动齿套(5)连接，当所述电磁线圈(11)断电后，所述弹簧(2)的弹力使所述活动齿套(5)与所述固定齿套(12)分开。
PCT/CN2020/079481 2019-03-15 2020-03-16 一种齿嵌式电磁离合器 WO2020187180A1 (zh)

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