WO2020259686A1

WO2020259686A1 - Shifting mechanism of transmission, and transmission

Info

Publication number: WO2020259686A1
Application number: PCT/CN2020/098543
Authority: WO
Inventors: 张�杰
Original assignee: 江苏美械变速箱有限公司
Priority date: 2019-06-28
Filing date: 2020-06-28
Publication date: 2020-12-30
Also published as: CN114294382A; CN110345203A

Abstract

Disclosed in the present application are a shifting mechanism of a transmission, and the transmission, wherein same belong to the field of mechanical technology. The shifting mechanism comprises a movable gear and a shifting tooth device that are coaxially arranged, wherein shifting teeth and a shifting tooth fixing slot meshing with each other are formed between the movable gear and the shifting tooth device; and at least one smooth protrusion is formed in the shifting tooth fixing slot. In the technical solution provided by the embodiment of the present application, by means of the smooth protrusion between the shifting tooth device and the movable gear, during the transmission switching from an original gear position to a target gear position, the shifting tooth device in the original gear position can be automatically separated from the movable gear in the original gear position without the need for relevant components to separate the shifting tooth device in the original gear position from the movable gear in the original gear position, thereby simplifying the hardware structure of the shifting mechanism and reducing the hardware cost.

Description

变速箱的换挡机构及变速箱Shift mechanism of gearbox and gearbox

本申请要求于2019年06月28日提交的申请号为201910579798.2、发明名称为“变速箱的换挡机构及变速箱”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed on June 28, 2019 with the application number 201910579798.2 and the invention title "shift mechanism and gearbox of a gearbox", the entire content of which is incorporated into this application by reference.

技术领域Technical field

本申请实施例涉及机械技术领域，特别涉及一种变速箱的换挡机构及变速箱。The embodiments of the present application relate to the field of mechanical technology, in particular to a gear shifting mechanism and a gearbox of a gearbox.

背景技术Background technique

变速箱是汽车上非常重要的部件，其可以改变传动比，扩大驱动轮转矩和转速的变化范围，以适应经常变化的行驶条件，同时使发送机在有利(功率较高而油耗较低)的工况下工作。The gearbox is a very important part of the car. It can change the transmission ratio and expand the range of torque and speed of the driving wheels to adapt to the frequently changing driving conditions, and at the same time make the transmitter advantageous (higher power and lower fuel consumption) Work under different conditions.

变速箱通常设置有多个不同的挡位，以输出不同的传动比。变速箱包括有换挡机构，通过该换挡机构实现不同挡位的切换。Gearboxes are usually provided with multiple different gears to output different transmission ratios. The gearbox includes a shifting mechanism through which different gears can be switched.

发明内容Summary of the invention

本申请实施例提供了一种变速箱的换挡机构及变速箱。所述技术方案如下：The embodiment of the present application provides a gear shift mechanism and a gear box. The technical solution is as follows:

一方面，本申请实施例提供一种变速箱的换挡机构，所述换挡机构包括：同轴设置的活动齿轮和换挡齿装置；On the one hand, an embodiment of the present application provides a gear shifting mechanism for a gearbox, the shifting mechanism includes: a coaxially arranged movable gear and a shifting gear device;

所述活动齿轮和所述换挡齿装置之间形成有相啮合的换挡齿和换挡齿固定槽；A shifting tooth and a shifting tooth fixing groove that mesh with each other are formed between the movable gear and the shifting gear device;

所述换挡齿固定槽中形成有至少一个平滑凸起部。At least one smooth protrusion is formed in the shift tooth fixing groove.

可选地，所述换挡齿固定槽呈环状，且所述换挡齿固定槽中存在至少两个与所述换挡齿相适配的固定齿，相邻两个所述固定齿之间形成有所述平滑凸起部。Optionally, the shifting tooth fixing groove is ring-shaped, and there are at least two fixed teeth matching the shifting teeth in the shifting tooth fixing groove, and one of the two adjacent fixed teeth The smooth convex portion is formed therebetween.

可选地，所述平滑凸起部位于相邻两个所述固定齿的中间位置。Optionally, the smooth protrusion is located in the middle of two adjacent fixed teeth.

可选地，所述换挡齿装置包括设置于轴上的换挡齿基座，以及与所述换挡齿基座通过花键连接的换挡齿；Optionally, the shift gear device includes a shift gear base provided on a shaft, and a shift gear connected with the shift gear base through a spline;

所述活动齿轮的侧边，形成有与所述换挡齿对应的换挡齿固定槽。The side of the movable gear is formed with a shift tooth fixing groove corresponding to the shift tooth.

可选地，所述换挡齿装置包括设置于轴上的换挡齿基座，以及与所述换挡齿基座通过花键连接的换挡齿固定槽；Optionally, the gear shifting device includes a gear shifting gear base provided on a shaft, and a gear shifting gear fixing groove connected to the gear shifting gear base through a spline;

所述活动齿轮的侧边，形成有与所述换挡齿固定槽对应的换挡齿。A shift tooth corresponding to the shift tooth fixing groove is formed on the side of the movable gear.

可选地，所述换挡齿基座上形成有第一限位槽，所述换挡齿或所述换挡齿固定槽上形成有与所述第一限位槽对应的第二限位槽；Optionally, a first limit groove is formed on the shift tooth base, and a second limit groove corresponding to the first limit groove is formed on the shift tooth or the shift tooth fixing groove groove;

所述第一限位槽中设置有弹力件以及位于所述弹力件顶部的钢珠；An elastic member and a steel ball on the top of the elastic member are provided in the first limiting groove;

在所述活动齿轮和所述换挡齿装置处于分离状态的情况下，所述钢珠的一部分位于所述第一限位槽中，且另一部分位于所述第二限位槽中。When the movable gear and the gear shifting device are in a separated state, a part of the steel ball is located in the first limiting groove, and the other part is located in the second limiting groove.

可选地，所述第一限位槽的数量为多个，且所述多个第一限位槽在所述换挡齿基座上绕轴均匀分布。Optionally, the number of the first limiting slots is multiple, and the multiple first limiting slots are evenly distributed around the axis on the shift gear base.

可选地，所述平滑凸起部的高度与所述换挡齿固定槽的凹槽深度相同。Optionally, the height of the smooth protrusion is the same as the depth of the groove of the shift tooth fixing groove.

可选地，所述换挡机构还包括电磁拨叉，所述电磁拨叉包括：壳体，设置于所述壳体中的第一固定块、第二固定块和活动块，以及与所述活动块相连的拨叉件；Optionally, the shift mechanism further includes an electromagnetic shift fork, the electromagnetic shift fork includes: a housing, a first fixed block, a second fixed block, and a movable block arranged in the housing, and the Fork piece connected with movable block;

所述第一固定块和所述第二固定块的位置固定；The positions of the first fixed block and the second fixed block are fixed;

所述活动块位于所述第一固定块和所述第二固定块之间，且所述活动块与所述第一固定块和所述第二固定块之间，分别通过电磁耦合；The movable block is located between the first fixed block and the second fixed block, and the movable block is electromagnetically coupled to the first fixed block and the second fixed block respectively;

所述拨叉件的一端与所述活动块连接，所述拨叉件的另一端与所述换挡齿装置连接。One end of the fork member is connected with the movable block, and the other end of the fork member is connected with the gear shifting device.

另一方面，本申请实施例提供一种变速箱，所述变速箱包括上述方面所述的换挡机构。On the other hand, an embodiment of the present application provides a gearbox, which includes the shift mechanism described in the above aspect.

再一方面，本申请实施例提供一种变速箱，所述变速箱包括：外离合器、内离合器、外输入轴、内输入轴和输出轴；In another aspect, an embodiment of the present application provides a gearbox, the gearbox includes: an outer clutch, an inner clutch, an outer input shaft, an inner input shaft, and an output shaft;

所述外输入轴和所述内输入轴同轴布置；所述外离合器与所述内输入轴连接，所述内离合器与所述外输入轴连接；The outer input shaft and the inner input shaft are coaxially arranged; the outer clutch is connected with the inner input shaft, and the inner clutch is connected with the outer input shaft;

所述外输入轴和所述内输入轴上设有各挡位的输入齿轮，所述输出轴上设有与所述输入轴齿轮相啮合的各挡位的输出齿轮；其中，所述输入齿轮包括固定齿轮和活动齿轮两种类型，所述输出齿轮也包括所述固定齿轮和所述活动齿轮两种类型，所述活动齿轮对应设置有换挡齿装置；The outer input shaft and the inner input shaft are provided with input gears of various gears, and the output shaft is provided with output gears of various gears meshing with the input shaft gear; wherein, the input gear It includes two types, a fixed gear and a movable gear, the output gear also includes two types, the fixed gear and the movable gear, and the movable gear is correspondingly provided with a gear shifting device;

所述活动齿轮和所述换挡齿装置之间形成有相啮合的换挡齿和换挡齿固定槽，所述换挡齿固定槽中形成有至少一个平滑凸起部；A shifting tooth and a shifting tooth fixing groove that mesh with each other are formed between the movable gear and the shifting tooth device, and at least one smooth protrusion is formed in the shifting tooth fixing groove;

在第一工作状态下，所述外离合器带动所述内输入轴转动，所述内输入轴带动所述内输入轴上的第一挡位的输入齿轮转动，所述第一挡位的输入齿轮带动所述输出轴上的所述第一挡位的输出齿轮转动，所述第一挡位的输出齿轮带动所述输出轴转动；In the first working state, the outer clutch drives the inner input shaft to rotate, the inner input shaft drives the first gear input gear on the inner input shaft to rotate, and the first gear input gear Driving the output gear of the first gear on the output shaft to rotate, and the output gear of the first gear driving the output shaft to rotate;

在第二工作状态下，所述内离合器带动所述外输入轴转动，所述外输入轴带动所述外输入轴上的第二挡位的输入齿轮转动，所述第二挡位的输入齿轮带动所述输出轴上的所述第二挡位的输出齿轮转动，所述第二挡位的输出齿轮带动所述输出轴转动；In the second working state, the inner clutch drives the outer input shaft to rotate, the outer input shaft drives the second gear input gear on the outer input shaft to rotate, and the second gear input gear Driving the output gear of the second gear on the output shaft to rotate, and the output gear of the second gear driving the output shaft to rotate;

在从所述第一工作状态切换至所述第二工作状态的过程中，所述第二挡位的换挡齿装置与所述第二挡位的活动齿轮啮合，所述内离合器结合，待所述内离合器结合之后，所述外离合器分离；In the process of switching from the first working state to the second working state, the gear shifting device of the second gear meshes with the movable gear of the second gear, and the internal clutch is engaged, waiting After the inner clutch is connected, the outer clutch is disconnected;

在从所述第二工作状态切换至所述第一工作状态的过程中，所述第一挡位的换挡齿装置与所述第一挡位的活动齿轮啮合，所述外离合器结合，待所述外离合器结合之后，所述内离合器分离。In the process of switching from the second working state to the first working state, the gear shifting device of the first gear meshes with the movable gear of the first gear, and the outer clutch is engaged, waiting After the outer clutch is connected, the inner clutch is disconnected.

可选地，所述变速箱还包括动力组件；Optionally, the gearbox further includes a power assembly;

所述动力组件分别通过第一连接组件和第二连接组件，与所述内输入轴和所述外输入轴分别连接；The power components are respectively connected to the inner input shaft and the outer input shaft through a first connecting component and a second connecting component;

在从所述第一工作状态切换至所述第二工作状态的过程中，所述动力组件通过所述第二连接组件带动所述外输入轴转动，使得所述第二挡位的换挡齿装置的转速与所述第二挡位的活动齿轮的转速相同；待转速相同之后，所述第二挡位的换挡齿装置与所述第二挡位的活动齿轮啮合；In the process of switching from the first working state to the second working state, the power assembly drives the outer input shaft to rotate through the second connecting assembly, so that the gear shifting gear of the second gear The rotation speed of the device is the same as the rotation speed of the movable gear of the second gear; after the rotation speed is the same, the gear shifting device of the second gear meshes with the movable gear of the second gear;

在从所述第二工作状态切换至所述第一工作状态的过程中，所述动力组件通过所述第一连接组件带动所述内输入轴转动，使得所述第一挡位的换挡齿装置的转速与所述第一挡位的活动齿轮的转速相同；待转速相同之后，所述第一挡位的换挡齿装置与所述第一挡位的活动齿轮啮合。In the process of switching from the second working state to the first working state, the power assembly drives the inner input shaft to rotate through the first connecting assembly, so that the shifting gear of the first gear The rotation speed of the device is the same as the rotation speed of the movable gear of the first gear; after the rotation speed is the same, the gear shifting device of the first gear meshes with the movable gear of the first gear.

可选地，所述动力组件包括第一电机和第二电机；Optionally, the power assembly includes a first motor and a second motor;

所述第一电机通过所述第一连接组件与所述内输入轴连接，所述第一连接组件包括设置于所述第一电机的动力输出端的第一主动齿轮，以及设置于所述内输入轴上且与所述第一主动齿轮啮合的第一从动齿轮；The first electric motor is connected to the inner input shaft through the first connecting assembly, and the first connecting assembly includes a first driving gear arranged at the power output end of the first electric motor, and arranged at the inner input shaft. A first driven gear on a shaft and meshing with the first driving gear;

所述第二电机通过所述第二连接组件与所述外输入轴连接，所述第二连接组件包括设置于所述第二电机的动力输出端的第二主动齿轮，以及设置于所述外输入轴上且与所述第二主动齿轮啮合的第二从动齿轮。The second motor is connected to the external input shaft through the second connecting assembly, and the second connecting assembly includes a second driving gear provided at the power output end of the second motor, and a second driving gear provided at the external input A second driven gear on the shaft and meshing with the second driving gear.

可选地，所述换挡齿装置包括设置于所述内输入轴、所述外输入轴或所述输出轴上的换挡齿基座，以及与所述换挡齿基座通过花键连接的换挡齿；Optionally, the shift gear device includes a shift gear base provided on the inner input shaft, the outer input shaft or the output shaft, and is connected to the shift gear base through a spline ’S shift gear;

所述换挡齿装置对应的活动齿轮的侧边，形成有与所述换挡齿对应的换挡齿固定槽。The side of the movable gear corresponding to the shift gear device is formed with a shift tooth fixing groove corresponding to the shift tooth.

可选地，所述换挡齿基座上形成有第一限位槽，所述换挡齿上形成有与所述第一限位槽对应的第二限位槽；Optionally, a first limit slot is formed on the shift tooth base, and a second limit slot corresponding to the first limit slot is formed on the shift tooth;

在所述换挡齿与所述活动齿轮处于分离状态的情况下，所述钢珠的一部分位于所述第一限位槽中，且另一部分位于所述第二限位槽中。When the shift tooth and the movable gear are in a separated state, a part of the steel ball is located in the first limiting groove, and the other part is located in the second limiting groove.

可选地，所述变速箱还包括：与所述换挡齿装置对应的电磁拨叉。Optionally, the gearbox further includes: an electromagnetic shift fork corresponding to the gear shifting device.

可选地，所述电磁拨叉包括：壳体，设置于所述壳体中的第一固定块、第二固定块和活动块，以及与所述活动块相连的拨叉件；Optionally, the electromagnetic shift fork includes: a housing, a first fixed block, a second fixed block, and a movable block provided in the housing, and a shift fork connected to the movable block;

所述拨叉件的一端与所述活动块连接，另一端与所述换挡齿装置连接。One end of the fork member is connected with the movable block, and the other end is connected with the shift gear device.

可选地，所述活动块与所述第一固定块和所述第二固定块之间，分别设置有弹力件。Optionally, elastic members are respectively provided between the movable block and the first fixed block and the second fixed block.

又一方面，本申请实施例提供一种汽车，所述汽车包括如上所述的变速箱。In another aspect, an embodiment of the present application provides an automobile, and the automobile includes the gearbox as described above.

本申请实施例提供的技术方案可以带来如下有益效果：The technical solutions provided by the embodiments of the present application can bring the following beneficial effects:

本申请实施例提供的技术方案中，借助于换挡齿装置与活动齿轮之间的平滑凸起部，使得变速箱在从原始挡位切换至目标挡位的过程中，原始挡位的换挡齿装置与该原始挡位的活动齿轮能够自动分离，无需通过相关部件将该原始挡位的换挡齿装置与该原始挡位的活动齿轮进行分离，简化换挡机构的硬件结构，降低硬件成本。In the technical solution provided by the embodiments of the present application, with the help of the smooth protrusion between the gear shifting device and the movable gear, the gearbox shifts from the original gear to the target gear. The gear device can be automatically separated from the movable gear of the original gear, and there is no need to separate the gear shift device of the original gear from the movable gear of the original gear through related parts, which simplifies the hardware structure of the shift mechanism and reduces the hardware cost .

附图说明Description of the drawings

为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

图1是本申请一个实施例提供的变速箱的换挡机构的示意图；Fig. 1 is a schematic diagram of a gear shifting mechanism of a gearbox according to an embodiment of the present application;

图2是本申请一个实施例提供的换挡齿限位槽的示意图；Fig. 2 is a schematic diagram of a shifting tooth limit groove provided by an embodiment of the present application;

图3是本申请一个实施例提供的换挡齿和换挡齿限位槽的示意图；Figure 3 is a schematic diagram of a shifting tooth and a shifting tooth limiting groove provided by an embodiment of the present application;

图4是本申请另一个实施例提供的变速箱的换挡机构的示意图；4 is a schematic diagram of a gear shift mechanism of a gearbox provided by another embodiment of the present application;

图5是本申请一个实施例提供的电磁拨叉的示意图；Figure 5 is a schematic diagram of an electromagnetic shift fork provided by an embodiment of the present application;

图6是本申请另一个实施例提供的电磁拨叉的示意图；Fig. 6 is a schematic diagram of an electromagnetic shift fork provided by another embodiment of the present application;

图7是本申请另一个实施例提供的电磁拨叉的示意图；Fig. 7 is a schematic diagram of an electromagnetic shift fork provided by another embodiment of the present application;

图8是本申请一个实施例提供的变速箱的结构示意图。Fig. 8 is a schematic structural diagram of a gearbox provided by an embodiment of the present application.

具体实施方式Detailed ways

为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。In order to make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

请参考图1，其示出了本申请一个实施例提供的变速箱的换挡机构的示意图。该换挡机构可以包括：同轴设置的活动齿轮18和换挡齿装置19。Please refer to FIG. 1, which shows a schematic diagram of a gear shift mechanism of a gearbox according to an embodiment of the present application. The shifting mechanism may include: a movable gear 18 and a shifting gear device 19 that are coaxially arranged.

活动齿轮18和换挡齿装置19设置在同一根轴30上。活动齿轮18是指与轴30之间是活动连接的齿轮，活动齿轮18与轴30之间的相对位置不固定，活动齿轮18可以绕着其所在的轴30转动。换挡齿装置19与轴30之间活动连接，换挡齿装置19能够沿轴30的方向(也即图1所示的A方向)移动，但换挡齿装置19并不能绕着其所在的轴30转动。可选地，换挡齿装置19与轴30之间通过花键连接。The movable gear 18 and the gear shifting device 19 are arranged on the same shaft 30. The movable gear 18 refers to a gear that is movably connected to the shaft 30. The relative position between the movable gear 18 and the shaft 30 is not fixed, and the movable gear 18 can rotate around the shaft 30 where it is located. The shift gear device 19 is movably connected to the shaft 30. The shift gear device 19 can move in the direction of the shaft 30 (that is, the direction A shown in FIG. 1), but the shift gear device 19 cannot go around where it is located. The shaft 30 rotates. Optionally, the gear shifting device 19 and the shaft 30 are connected by a spline.

活动齿轮18和换挡齿装置19之间形成有相啮合的换挡齿20和换挡齿固定槽21。通过调节换挡齿装置19在轴30上的位置，能够使得活动齿轮18和换挡齿装置19之间啮合，也即换挡齿20和换挡齿固定槽21啮合；或者使得活动齿轮18和换挡齿装置19之间分离，也即换挡齿20和换挡齿固定槽21分离。A shifting tooth 20 and a shifting tooth fixing groove 21 are formed between the movable gear 18 and the shifting gear device 19 to mesh with each other. By adjusting the position of the shifting gear device 19 on the shaft 30, the movable gear 18 and the shifting gear device 19 can be engaged, that is, the shifting teeth 20 and the shifting tooth fixing groove 21 can be engaged; or the movable gear 18 can be engaged with The gear shifting gear device 19 is separated from each other, that is, the gear shifting gear 20 is separated from the gear shifting gear fixing groove 21.

结合参考图2和图3，换挡齿固定槽21中形成有至少一个平滑凸起部212。2 and 3 in combination, at least one smooth protrusion 212 is formed in the shift tooth fixing groove 21.

在本申请实施例中，换挡齿固定槽21呈环状，且换挡齿固定槽21中存在至少两个与换挡齿20相适配的固定齿211，相邻两个固定齿211之间形成有平滑凸起部212。In the embodiment of the present application, the shifting tooth fixing groove 21 is ring-shaped, and there are at least two fixed teeth 211 matching the shifting teeth 20 in the shifting tooth fixing groove 21, and one of the two adjacent fixed teeth 211 A smooth protrusion 212 is formed therebetween.

可选地，平滑凸起部212位于相邻两个固定齿211的中间位置。Optionally, the smooth protrusion 212 is located in the middle of two adjacent fixed teeth 211.

可选地，平滑凸起部212的高度与换挡齿固定槽21的凹槽深度相同。Optionally, the height of the smooth protrusion 212 is the same as the depth of the groove of the shift tooth fixing groove 21.

在第一种可能的实现方式中，如图1所示，换挡齿装置19包括设置于轴30上的换挡齿基座191，以及与换挡齿基座191通过花键连接的换挡齿20；活动齿轮18的侧边，形成有与换挡齿20对应的换挡齿固定槽21。In the first possible implementation manner, as shown in FIG. 1, the gear shifting device 19 includes a gear shifting base 191 provided on the shaft 30, and a gear shifting gear base 191 connected with the shifting gear base 191 through a spline. Tooth 20; the side of the movable gear 18 is formed with a shift tooth fixing groove 21 corresponding to the shift tooth 20.

在第二种可能的实现方式中，换挡齿装置19包括设置于轴30上的换挡齿基座191，以及与换挡齿基座191通过花键连接的换挡齿固定槽21；活动齿轮18的侧边，形成有与换挡齿固定槽21对应的换挡齿20。In the second possible implementation manner, the gear shift device 19 includes a gear shift gear base 191 arranged on the shaft 30, and a gear shift gear fixing groove 21 connected with the gear shift gear base 191 through a spline; The side of the gear 18 is formed with a shift tooth 20 corresponding to the shift tooth fixing groove 21.

换挡齿基座191可以在轴30上一体成型，也可以固定设置在轴30上。The shift tooth base 191 may be integrally formed on the shaft 30 or fixedly arranged on the shaft 30.

在示例性实施例中，如图1所示，换挡齿基座191上形成有第一限位槽，换挡齿20或换挡齿固定槽21上形成有与第一限位槽对应的第二限位槽；第一限位槽中设置有弹力件以及位于弹力件顶部的钢珠；在活动齿轮18和换挡齿装置19处于分离状态的情况下，钢珠的一部分位于第一限位槽中，且另一部分位于第二限位槽中。可选地，弹力件为弹簧或者其它弹性部件。在本申请实施例中，对第一限位槽的数量不作限定，可选地，第一限位槽的数量为多个，该多个第一限位槽在换挡齿基座191上绕轴30均匀分布，第二限位槽的数量与第一限位槽的数量相同。In an exemplary embodiment, as shown in FIG. 1, a first limiting groove is formed on the shifting tooth base 191, and a shifting tooth 20 or a shifting tooth fixing groove 21 is formed with a corresponding first limiting groove. The second limit slot; the first limit slot is provided with an elastic member and a steel ball on the top of the elastic member; when the movable gear 18 and the shift gear device 19 are in a separated state, a part of the steel ball is located in the first limit slot And the other part is located in the second limiting slot. Optionally, the elastic member is a spring or other elastic components. In the embodiment of the present application, the number of the first limit slots is not limited. Optionally, the number of the first limit slots is multiple, and the multiple first limit slots are wound on the shift gear base 191. The shafts 30 are evenly distributed, and the number of the second limiting slots is the same as the number of the first limiting slots.

对应于上述第一种可能的实现方式，由于换挡齿基座191与换挡齿20之间通过花键连接，因此换挡齿20上形成有与第一限位槽对应的第二限位槽。对应于上述第二种可能的实现方式，由于换挡齿基座191与换挡齿固定槽21之间通过花键连接，因此换挡齿固定槽21上形成有与第一限位槽对应的第二限位槽。Corresponding to the first possible implementation manner described above, since the shift tooth base 191 and the shift tooth 20 are connected by a spline, a second limit corresponding to the first limit slot is formed on the shift tooth 20 groove. Corresponding to the second possible implementation manner described above, since the shifting tooth base 191 and the shifting tooth fixing groove 21 are connected by a spline, the shifting tooth fixing groove 21 is formed with a corresponding first limiting groove The second limit slot.

通过上述方式，在换挡齿装置19与活动齿轮18处于分离状态的情况下，能够使得换挡齿20或换挡齿固定槽21与换挡齿基座191之间的位置更加稳定。In the above manner, when the shift gear device 19 and the movable gear 18 are in a separated state, the position between the shift gear 20 or the shift gear fixing groove 21 and the shift gear base 191 can be made more stable.

可选地，如图4所示，换挡机构还包括电磁拨叉24，该电磁拨叉24包括：壳体241，设置于壳体241中的第一固定块242、第二固定块243和活动块244，以及与活动块244相连的拨叉件245。第一固定块242和第二固定块243的位置固定。活动块244位于第一固定块242和第二固定块243之间，且活动块244与第一固定块242和第二固定块243之间，分别通过电磁耦合。拨叉件245的一端与活动块244连接，另一端与换挡齿装置19连接。Optionally, as shown in FIG. 4, the shifting mechanism further includes an electromagnetic shift fork 24, which includes a housing 241, a first fixing block 242, a second fixing block 243, and a housing 241 disposed in the housing 241 The movable block 244, and the fork member 245 connected with the movable block 244. The positions of the first fixing block 242 and the second fixing block 243 are fixed. The movable block 244 is located between the first fixed block 242 and the second fixed block 243, and the movable block 244 and the first fixed block 242 and the second fixed block 243 are respectively electromagnetically coupled. One end of the fork member 245 is connected with the movable block 244, and the other end is connected with the shift gear device 19.

在一个示例中，如图5所示，第一固定块242和第二固定块243为磁性相同的磁铁，活动块244为电磁铁。在另一个示例中，如图6所示，第一固定块242和第二固定块243为电磁铁，活动块244为磁性金属材料。其中，磁性金属材料是指能够被磁铁吸引的材料，如铁、镍、钴等。在另一个示例中，如图7所示，第一固定块242和第二固定块243为电磁铁，活动块244也为电磁铁。In an example, as shown in FIG. 5, the first fixed block 242 and the second fixed block 243 are magnets with the same magnetic properties, and the movable block 244 is an electromagnet. In another example, as shown in FIG. 6, the first fixed block 242 and the second fixed block 243 are electromagnets, and the movable block 244 is a magnetic metal material. Among them, magnetic metal materials refer to materials that can be attracted by magnets, such as iron, nickel, and cobalt. In another example, as shown in FIG. 7, the first fixed block 242 and the second fixed block 243 are electromagnets, and the movable block 244 is also an electromagnet.

在本申请实施例中，通过电磁控制带动拨叉件245移动，进而通过拨叉件245带动换挡齿装置19移动，能够实现高效的换挡控制。In the embodiment of the present application, the fork member 245 is driven to move by electromagnetic control, and the shift gear device 19 is driven to move by the fork member 245, which can realize efficient shift control.

可选地，活动块244与第一固定块242和第二固定块243之间，分别设置有弹力件，如弹簧。这样，在活动块244与第一固定块242和第二固定块243之间没有磁力时，能够通过该弹力件快速地控制活动块244进行复位。Optionally, between the movable block 244 and the first fixed block 242 and the second fixed block 243, elastic members, such as springs, are respectively provided. In this way, when there is no magnetic force between the movable block 244 and the first fixed block 242 and the second fixed block 243, the movable block 244 can be quickly controlled to reset by the elastic member.

可选地，活动块244与壳体241的侧边之间设置有限位挡板；活动块244与限位挡板相对的一面形成有凸起部，限位挡板上形成有与凸起部相适配的凹槽部。这样，在活动块244处于复位状态下，活动块244的凸起部位于凹槽部中，使得活动块244的位置更加稳固。Optionally, a limiting baffle is provided between the movable block 244 and the side of the housing 241; a convex portion is formed on the side of the movable block 244 opposite to the limiting baffle, and a convex portion is formed on the limiting baffle Compatible groove part. In this way, when the movable block 244 is in the reset state, the convex portion of the movable block 244 is located in the groove portion, so that the position of the movable block 244 is more stable.

综上所述，本申请实施例提供的技术方案中，借助于换挡齿装置与活动齿轮之间的平滑凸起部，使得变速箱在从原始挡位切换至目标挡位的过程中，原始挡位的换挡齿装置与该原始挡位的活动齿轮能够自动分离，无需通过相关部件将该原始挡位的换挡齿装置与该原始挡位的活动齿轮进行分离，简化换挡机构的硬件结构，降低硬件成本。To sum up, in the technical solutions provided by the embodiments of the present application, with the help of the smooth protrusions between the gear shifting device and the movable gear, the original gear is shifted from the original gear to the target gear. The gear shifting gear device of the gear can be automatically separated from the movable gear of the original gear, and there is no need to separate the gear shifting device of the original gear from the movable gear of the original gear through related parts, which simplifies the hardware of the gear shifting mechanism Structure, reduce hardware cost.

本申请一示例性实施例还提供了一种变速箱，该变速箱包括上文实施例提供的换挡机构。所述变速箱可以是手动变速箱、自动变速箱、双离合变速箱等任意类型，本申请实施例对此不作限定。An exemplary embodiment of the present application further provides a gearbox, which includes the shift mechanism provided in the above embodiment. The gearbox may be any type such as manual gearbox, automatic gearbox, dual-clutch gearbox, etc., which is not limited in the embodiment of the present application.

请参考图8，其示出了本申请一个实施例提供的变速箱1的结构示意图。该变速箱1可以包括：外离合器11、内离合器12、外输入轴13、内输入轴14和输出轴15。Please refer to FIG. 8, which shows a schematic structural diagram of a gearbox 1 provided by an embodiment of the present application. The gearbox 1 may include an outer clutch 11, an inner clutch 12, an outer input shaft 13, an inner input shaft 14 and an output shaft 15.

本申请实施例提供的变速箱1为双离合变速箱，该变速箱1包括外离合器11和内离合器12。在本申请实施例中，对离合器的类型不作限定，例如其可以是液压离合器、电磁离合器等。The gearbox 1 provided in the embodiment of the present application is a dual-clutch gearbox, and the gearbox 1 includes an outer clutch 11 and an inner clutch 12. In the embodiment of the present application, the type of the clutch is not limited, for example, it may be a hydraulic clutch, an electromagnetic clutch, and the like.

外输入轴13和内输入轴14同轴布置。如图8所示，外输入轴13套接在内输入轴14的一端的外部。The outer input shaft 13 and the inner input shaft 14 are coaxially arranged. As shown in FIG. 8, the outer input shaft 13 is sleeved outside of one end of the inner input shaft 14.

外离合器11与内输入轴14连接，内离合器12与外输入轴13连接。外离合器11用于给内输入轴14提供动力，内离合器12用于给外输入轴13提供动力。The outer clutch 11 is connected with the inner input shaft 14, and the inner clutch 12 is connected with the outer input shaft 13. The outer clutch 11 is used to provide power to the inner input shaft 14, and the inner clutch 12 is used to provide power to the outer input shaft 13.

外输入轴13和内输入轴14上设有各挡位的输入齿轮，输出轴15上设有与输入齿轮相啮合的各挡位的输出齿轮。在本申请实施例中，变速箱1包括多个(至少两个)挡位。在图8中，以变速箱1包括1至9挡以及倒挡，总共10个挡位进行示意性说明。输入轴(包括外输入轴13和内输入轴14)上的齿轮称为输入齿轮，输出轴15上的齿轮称为输出齿轮。每一个挡位包含一个输入齿轮和一个输出齿轮。对于1至9挡，输入齿轮和输出齿轮直接啮合；对于倒挡，输入齿轮和输出齿轮间接啮合，两者中间还有一个倒挡齿轮。The outer input shaft 13 and the inner input shaft 14 are provided with input gears of various gears, and the output shaft 15 is provided with output gears of various gears meshing with the input gears. In the embodiment of the present application, the gearbox 1 includes multiple (at least two) gears. In FIG. 8, the gearbox 1 includes 1 to 9 gears and reverse gears, a total of 10 gears for schematic illustration. The gears on the input shaft (including the outer input shaft 13 and the inner input shaft 14) are called input gears, and the gears on the output shaft 15 are called output gears. Each gear includes an input gear and an output gear. For gears 1 to 9, the input gear and output gear directly mesh; for reverse gear, the input gear and output gear mesh indirectly, and there is a reverse gear between the two.

在本申请实施例中，如图8所示，内输入轴14实现奇数挡位，也即1挡、3挡、5挡、7挡和9挡；外输入轴13实现偶数挡位和倒挡，也即2挡、4挡、6挡、8挡和R挡(即倒挡)。In the embodiment of the present application, as shown in FIG. 8, the inner input shaft 14 realizes odd-numbered gears, that is, 1st gear, 3rd gear, 5th gear, 7th gear, and 9th gear; the outer input shaft 13 realizes even-numbered gears and reverse gear. , That is, 2nd, 4th, 6th, 8th, and R (reverse gear).

在本申请实施例中，输入齿轮包括固定齿轮和活动齿轮两种类型，输出齿轮也包括固定齿轮和活动齿轮两种类型。在图8中，固定齿轮以标号17示出，活动齿轮以标号18示出。活动齿轮18对应设置有换挡齿装置19。固定齿轮17是指直接在轴上形成或者与轴之间是固定连接的齿轮，固定齿轮17与轴之间的相对位置固定。活动齿轮18是指与轴之间是活动连接的齿轮，活动齿轮18与轴之间的相对位置不固定，活动齿轮18可以绕着其所在的轴转动。In the embodiment of the present application, the input gear includes two types of fixed gear and movable gear, and the output gear also includes two types of fixed gear and movable gear. In FIG. 8, the fixed gear is shown at 17 and the movable gear is shown at 18. The movable gear 18 is correspondingly provided with a shift gear device 19. The fixed gear 17 refers to a gear directly formed on the shaft or fixedly connected to the shaft, and the relative position between the fixed gear 17 and the shaft is fixed. The movable gear 18 refers to a gear that is movably connected to the shaft. The relative position between the movable gear 18 and the shaft is not fixed, and the movable gear 18 can rotate around the shaft on which it is located.

在本申请实施例中，如图8所示，变速箱1的换挡机构包括活动齿轮18和换挡齿装置19。活动齿轮18和换挡齿装置19之间形成有相啮合的换挡齿20和换挡齿固定槽21，换挡齿固定槽21中形成有至少一个平滑凸起部。有关该换挡机构的介绍说明可参见上文实施例，本实施例对此不再赘述。In the embodiment of the present application, as shown in FIG. 8, the gear shift mechanism of the gearbox 1 includes a movable gear 18 and a gear shift device 19. A shifting tooth 20 and a shifting tooth fixing groove 21 that are engaged with each other are formed between the movable gear 18 and the shifting gear device 19, and at least one smooth protrusion is formed in the shifting tooth fixing groove 21. For the introduction and description of the shift mechanism, please refer to the above embodiment, which will not be repeated in this embodiment.

在第一工作状态下，外离合器11带动内输入轴14转动，内输入轴14带动内输入轴14上的第一挡位的输入齿轮转动，第一挡位的输入齿轮带动输出轴15上的第一挡位的输出齿轮转动，第一挡位的输出齿轮带动输出轴15转动。In the first working state, the outer clutch 11 drives the inner input shaft 14 to rotate, the inner input shaft 14 drives the first gear input gear on the inner input shaft 14 to rotate, and the first gear input gear drives the output shaft 15 The output gear of the first gear rotates, and the output gear of the first gear drives the output shaft 15 to rotate.

在第二工作状态下，内离合器12带动外输入轴13转动，外输入轴13带动外输入轴13上的第二挡位的输入齿轮转动，第二挡位的输入齿轮带动输出轴15上的第二挡位的输出齿轮转动，第二挡位的输出齿轮带动输出轴15转动。In the second working state, the inner clutch 12 drives the outer input shaft 13 to rotate, the outer input shaft 13 drives the second gear input gear on the outer input shaft 13 to rotate, and the second gear input gear drives the output shaft 15 The output gear of the second gear rotates, and the output gear of the second gear drives the output shaft 15 to rotate.

以变速箱1工作在1挡为例，此时变速箱1处于第一工作状态，外离合器11带动内输入轴14转动，内输入轴14带动内输入轴14上的1挡的输入齿轮转动，1挡的输入齿轮带动输出轴15上的1挡的输出齿轮转动，1挡的输出齿轮带动输出轴15转动。Taking the gearbox 1 working in the first gear as an example, the gearbox 1 is in the first working state, the outer clutch 11 drives the inner input shaft 14 to rotate, and the inner input shaft 14 drives the first gear on the inner input shaft 14 to rotate. The input gear of the first gear drives the output gear of the first gear on the output shaft 15 to rotate, and the output gear of the first gear drives the output shaft 15 to rotate.

以变速箱1工作在2挡为例，此时变速箱1处于第二工作状态，内离合器12带动外输入轴13转动，外输入轴13带动外输入轴13上的2挡的输入齿轮转动，2挡的输入齿轮带动输出轴15上的2挡的输出齿轮转动，2挡的输出齿轮带动输出轴15转动。Taking the gearbox 1 working in the second gear as an example, the gearbox 1 is in the second working state, the inner clutch 12 drives the outer input shaft 13 to rotate, and the outer input shaft 13 drives the second gear input gear on the outer input shaft 13 to rotate. The second-speed input gear drives the second-speed output gear on the output shaft 15 to rotate, and the second-speed output gear drives the output shaft 15 to rotate.

在从第一工作状态切换至第二工作状态的过程中，第二挡位的换挡齿装置19与第二挡位的活动齿轮18啮合，内离合器12结合，待内离合器12结合之后，外离合器11分离。In the process of switching from the first working state to the second working state, the gear shifting device 19 of the second gear meshes with the movable gear 18 of the second gear, the inner clutch 12 is coupled, and after the inner clutch 12 is coupled, the outer The clutch 11 is disengaged.

在从第二工作状态切换至第一工作状态的过程中，第一挡位的换挡齿装置19与第一挡位的活动齿轮18啮合，外离合器11结合，待外离合器11结合之后，内离合器12分离。In the process of switching from the second working state to the first working state, the shifting gear device 19 of the first gear meshes with the movable gear 18 of the first gear, the outer clutch 11 is engaged, and after the outer clutch 11 is engaged, the inner The clutch 12 is disengaged.

下面，以从1挡升至2挡的升挡过程为例，对挡位切换过程进行介绍说明：In the following, taking the upshifting process from gear 1 to gear 2 as an example, the gear switching process will be introduced and explained:

当变速箱1处于1挡工作状态时，外离合器11处于结合状态，内离合器12处于分离状态。如图8所示，由于1挡的换挡齿装置19设置在1挡的输出齿轮旁边，因此该1挡的换挡齿装置19与1挡的输出齿轮啮合。外离合器11带动内输入轴14转动，内输入轴14带动内输入轴14上的1挡的输入齿轮转动，1挡的输入齿轮带动输出轴15上的1挡的输出齿轮转动，1挡的输出齿轮由于与1挡的换挡齿装置19啮合，因此通过该1挡的换挡齿装置19带动输出轴15转动。When the gearbox 1 is in the first gear working state, the outer clutch 11 is in a connected state, and the inner clutch 12 is in a disengaged state. As shown in FIG. 8, since the first-speed gear shift device 19 is arranged beside the first-speed output gear, the first-speed gear shift device 19 meshes with the first-speed output gear. The outer clutch 11 drives the inner input shaft 14 to rotate, the inner input shaft 14 drives the 1st gear input gear on the inner input shaft 14 to rotate, the 1st gear input gear drives the 1st gear output gear on the output shaft 15 to rotate, and the 1st gear output Since the gear meshes with the first gear shift gear device 19, the first gear shift gear device 19 drives the output shaft 15 to rotate.

在变速箱1从1挡切换至2挡的过程中，如图8所示，由于2挡的换挡齿装置19设置在2挡的输出齿轮旁边，因此该2挡的换挡齿装置19与2挡的输出齿轮啮合，与此同时或者在2挡的换挡齿装置19与2挡的输出齿轮啮合之后，1挡的换挡齿装置19与1挡的输出齿轮分离；内离合器12由分离状态切换为结合状态，待内离合器12结合之后，外离合器11从结合状态切换为分离状态，变速箱1切换至2挡工作状态。In the process of shifting the gearbox 1 from the 1st gear to the 2nd gear, as shown in Figure 8, the 2nd gear shift gear 19 is arranged next to the 2nd gear output gear, so the 2nd gear shift gear 19 is The output gear of the 2nd gear meshes at the same time or after the gear shifting device 19 of the 2nd gear meshes with the output gear of the 2nd gear, the gear shifting device 19 of the 1st gear is separated from the output gear of the 1st gear; the internal clutch 12 is separated The state is switched to the engaged state. After the inner clutch 12 is engaged, the outer clutch 11 is switched from the engaged state to the disengaged state, and the gearbox 1 is switched to the 2nd gear working state.

当变速箱1处于2挡工作状态时，内离合器12处于结合状态，外离合器11处于分离状态。内离合器12带动外输入轴13转动，外输入轴13带动外输入轴13上的2挡的输入齿轮转动，2挡的输入齿轮带动输出轴15上的2挡的输出齿轮转动，2挡的输出齿轮由于与2挡的换挡齿装置19啮合，因此通过该2挡的换挡齿装置19带动输出轴15转动。When the gearbox 1 is in the 2nd gear working state, the inner clutch 12 is in the connected state, and the outer clutch 11 is in the disengaged state. The inner clutch 12 drives the outer input shaft 13 to rotate, the outer input shaft 13 drives the 2nd gear input gear on the outer input shaft 13 to rotate, the 2nd gear input gear drives the 2nd gear output gear on the output shaft 15 to rotate, and the 2nd gear output Since the gear meshes with the gear shifting device 19 of the second gear, the output shaft 15 is driven to rotate by the gear shifting device 19 of the second gear.

在本申请实施例中，在变速箱1从1挡切换至2挡的过程中，1挡的换挡齿装置19与1挡的输出齿轮能够自动分离。具体来讲，在内离合器12由分离状态切换为结合状态之后，内离合器12便会带动外输入轴13转动，外输入轴13进一步带动输出轴15转动，由于此时1挡的换挡齿装置19与1挡的输出齿轮的转速不再相同，因此1挡的换挡齿20与换挡齿固定槽21之间会产生相对运动，由于换挡齿固定槽21中存在平滑凸起部212，借助于该平滑凸起部212能够顶开换挡齿20，使得1挡的换挡齿20与换挡齿固定槽21自动分离，也即使得1挡的换挡齿装置19与1挡的输出齿轮能够自动分离。正是这种设计，使得在从1挡切换至2挡的过程中，能够先结合内离合器12再分离外离合器11，实现无时延无间歇换挡。In the embodiment of the present application, when the gearbox 1 is shifted from the first gear to the second gear, the first gear shifting gear 19 and the first gear output gear can be automatically separated. Specifically, after the inner clutch 12 is switched from the disengaged state to the engaged state, the inner clutch 12 will drive the outer input shaft 13 to rotate, and the outer input shaft 13 will further drive the output shaft 15 to rotate. The rotational speeds of the output gears of the 19th and 1st gears are no longer the same, so there will be relative movement between the 1st gear shifting tooth 20 and the shifting tooth fixing groove 21, due to the smooth protrusion 212 in the shifting tooth fixing groove 21, With the help of the smooth protrusion 212, the shifting tooth 20 can be pushed out, so that the shifting tooth 20 of the first gear is automatically separated from the shifting tooth fixing groove 21, that is, the output of the shifting gear device 19 of the first gear and the first gear are automatically separated. The gears can be separated automatically. It is this design that makes it possible to first engage the inner clutch 12 and then disconnect the outer clutch 11 in the process of shifting from the first gear to the second gear, so as to achieve no time delay and no intermittent shift.

下面，以从2挡升至3挡的升挡过程为例，对挡位切换过程进行介绍说明：In the following, taking the upshifting process from 2nd gear to 3rd gear as an example, the gear switching process will be introduced and explained:

当变速箱1处于2挡工作状态时，内离合器12处于结合状态，外离合器11处于分离状态。如图8所示，由于2挡的换挡齿装置19设置在2挡的输出齿轮旁边，因此该2挡的换挡齿装置19与2挡的输出齿轮啮合。内离合器12带动外输入轴13转动，外输入轴13带动外输入轴13上的2挡的输入齿轮转动，2挡的输入齿轮带动输出轴15上的2挡的输出齿轮转动，2挡的输出齿轮由于与2挡的换挡齿装置19啮合，因此通过该2挡的换挡齿装置19带动输出轴15转动。When the gearbox 1 is in the 2nd gear working state, the inner clutch 12 is in the connected state and the outer clutch 11 is in the disengaged state. As shown in FIG. 8, since the gear shifting device 19 of the second gear is arranged beside the output gear of the second gear, the gear shifting device 19 of the second gear meshes with the output gear of the second gear. The inner clutch 12 drives the outer input shaft 13 to rotate, the outer input shaft 13 drives the 2nd gear input gear on the outer input shaft 13 to rotate, the 2nd gear input gear drives the 2nd gear output gear on the output shaft 15 to rotate, and the 2nd gear output Since the gear meshes with the gear shifting device 19 of the second gear, the output shaft 15 is driven to rotate by the gear shifting device 19 of the second gear.

在变速箱1从2挡切换至3挡的过程中，如图8所示，由于3挡的换挡齿装置19设置在3挡的输出齿轮旁边，因此该3挡的换挡齿装置19与3挡的输出齿轮啮合，与此同时或者在3挡的换挡齿装置19与3挡的输出齿轮啮合之后，2挡的换挡齿装置19与2挡的输出齿轮分离；外离合器11由分离状态切换为结合状态，待外离合器11结合之后，内离合器12从结合状态切换为分离状态，变速箱1切换至3挡工作状态。In the process of shifting the gearbox 1 from the 2nd to the 3rd gear, as shown in Figure 8, the 3rd gear shifting gear 19 is arranged next to the 3rd gear output gear, so the 3rd gear shifting gear 19 and The output gear of the 3rd gear meshes at the same time or after the gear shifting device 19 of the 3rd gear meshes with the output gear of the 3rd gear, the gear shifting device 19 of the 2nd gear is separated from the output gear of the 2nd gear; the outer clutch 11 is separated by The state is switched to the engaged state. After the outer clutch 11 is engaged, the inner clutch 12 is switched from the engaged state to the disengaged state, and the gearbox 1 is switched to the 3rd gear working state.

当变速箱1处于3挡工作状态时，外离合器11处于结合状态，内离合器12处于分离状态。外离合器11带动内输入轴14转动，内输入轴14带动内输入轴14上的3挡的输入齿轮转动，3挡的输入齿轮带动输出轴15上的3挡的输出齿轮转动，3挡的输出齿轮由于与3挡的换挡齿装置19啮合，因此通过该3挡的换挡齿装置19带动输出轴15转动。When the gearbox 1 is in the 3rd gear working state, the outer clutch 11 is in the connected state, and the inner clutch 12 is in the disengaged state. The outer clutch 11 drives the inner input shaft 14 to rotate, the inner input shaft 14 drives the 3-speed input gear on the inner input shaft 14 to turn, the 3-speed input gear drives the 3-speed output gear on the output shaft 15 to turn, and the 3-speed output Since the gear meshes with the gear shifting device 19 of the third gear, the gear shifting device 19 of the third gear drives the output shaft 15 to rotate.

在本申请实施例中，在变速箱1从2挡切换至3挡的过程中，2挡的换挡齿装置19与2挡的输出齿轮能够自动分离。具体来讲，在外离合器11由分离状态切换为结合状态之后，外离合器11便会带动内输入轴14转动，内输入轴14进一步带动输出轴15转动，由于此时2挡的换挡齿装置19与2挡的输出齿轮的转速不再相同，因此2挡的换挡齿20与换挡齿固定槽21之间会产生相对运动，由于换挡齿固定槽21中存在平滑凸起部212，借助于该平滑凸起部212能够顶开换挡齿20，使得2挡的换挡齿20与换挡齿固定槽21自动分离，也即使得2挡的换挡齿装置19与2挡的输出齿轮能够自动分离。正是这种设计，使得在从2挡切换至3挡的过程中，能够先结合外离合器11再分离内离合器12，实现无时延无间歇换挡。In the embodiment of the present application, during the process of shifting the gearbox 1 from the second gear to the third gear, the gear shifting gear 19 of the second gear and the output gear of the second gear can be automatically separated. Specifically, after the outer clutch 11 is switched from the disengaged state to the engaged state, the outer clutch 11 will drive the inner input shaft 14 to rotate, and the inner input shaft 14 will further drive the output shaft 15 to rotate. At this time, the 2nd gear shift gear 19 The speed of the output gear is no longer the same as that of the 2nd gear. Therefore, there will be relative movement between the 2nd gear shifting tooth 20 and the shifting tooth fixing groove 21. Due to the smooth protrusion 212 in the shifting tooth fixing groove 21, The smooth protrusion 212 can push the shifting tooth 20 away, so that the second-speed shifting tooth 20 is automatically separated from the shifting-tooth fixing groove 21, that is, the second-speed shifting tooth device 19 and the second-speed output gear Able to separate automatically. It is this design that makes it possible to first engage the outer clutch 11 and then disengage the inner clutch 12 during the process of shifting from the 2nd gear to the 3rd gear, realizing no time delay and no intermittent gear shifting.

下面，以从9挡降至4挡的降挡过程为例，对挡位切换过程进行介绍说明：Below, taking the downshift process from 9th gear to 4th gear as an example, the gear switching process will be introduced and explained:

当变速箱1处于9挡工作状态时，外离合器11处于结合状态，内离合器12处于分离状态。如图8所示，由于9挡的换挡齿装置19设置在9挡的输入齿轮旁边，因此该9挡的换挡齿装置19与9挡的输入齿轮啮合。外离合器11带动内输入轴14转动，内输入轴14带动内输入轴14上的9挡的换挡齿装置19转动，9挡的换挡齿装置19带动9挡的输入齿轮转动，9挡的输入齿轮带动9挡的输出齿轮转动，9挡的输出齿轮带动输出轴15转动。When the gearbox 1 is in the 9th gear working state, the outer clutch 11 is in a connected state, and the inner clutch 12 is in a disengaged state. As shown in FIG. 8, since the 9th gear shift gear device 19 is arranged beside the 9th gear input gear, the 9th gear shift gear device 19 meshes with the 9th gear input gear. The outer clutch 11 drives the inner input shaft 14 to rotate, the inner input shaft 14 drives the 9-speed gear shift device 19 on the inner input shaft 14 to rotate, and the 9-speed gear shift device 19 drives the 9-speed input gear to rotate. The input gear drives the 9th gear output gear to rotate, and the 9th gear output gear drives the output shaft 15 to rotate.

在变速箱1从9挡切换至4挡的过程中，如图8所示，由于4挡的换挡齿装置19设置在4挡的输出齿轮旁边，因此该4挡的换挡齿装置19与4挡的输出齿轮啮合，与此同时或者在4挡的换挡齿装置19与4挡的输出齿轮啮合之后，9挡的换挡齿装置19与9挡的输入齿轮分离；内离合器12由分离状态切换为结合状态，待内离合器12结合之后，外离合器11从结合状态切换为分离状态，变速箱1切换至4挡工作状态。In the process of shifting gearbox 1 from 9th gear to 4th gear, as shown in Figure 8, since the 4th gear shift gear 19 is arranged next to the 4th gear output gear, the 4th gear shift gear 19 and The output gear of the 4th gear meshes at the same time or after the gear shifting device 19 of the 4th gear meshes with the output gear of the 4th gear, the 9th gear shifting gear device 19 is separated from the 9th gear input gear; the internal clutch 12 is separated The state is switched to the engaged state. After the inner clutch 12 is engaged, the outer clutch 11 is switched from the engaged state to the disengaged state, and the gearbox 1 is switched to the 4th gear working state.

当变速箱1处于4挡工作状态时，内离合器12处于结合状态，外离合器11处于分离状态。内离合器12带动外输入轴13转动，外输入轴13带动外输入轴13上的4挡的输入齿轮转动，4挡的输入齿轮带动输出轴15上的4挡的输出齿轮转动，4挡的输出齿轮由于与4挡的换挡齿装置19啮合，因此通过该4挡的换挡齿装置19带动输出轴15转动。When the gearbox 1 is in the 4th gear working state, the inner clutch 12 is in the connected state, and the outer clutch 11 is in the disengaged state. The inner clutch 12 drives the outer input shaft 13 to rotate, the outer input shaft 13 drives the 4-speed input gear on the outer input shaft 13 to turn, the 4-speed input gear drives the 4-speed output gear on the output shaft 15 to turn, the 4-speed output Since the gear meshes with the gear shifting device 19 of the 4th gear, the gear shifting device 19 of the 4th gear drives the output shaft 15 to rotate.

在本申请实施例中，在变速箱1从9挡切换至4挡的过程中，9挡的换挡齿装置19与9挡的输入齿轮能够自动分离。具体来讲，在内离合器12由分离状态切换为结合状态之后，内离合器12便会带动外输入轴13转动，外输入轴13进一步带动输出轴15转动，由于此时9挡的换挡齿装置19与9挡的输入齿轮的转速不再相同，因此9挡的换挡齿20与换挡齿固定槽21之间会产生相对运动，由于换挡齿固定槽21中存在平滑凸起部212，借助于该平滑凸起部212能够顶开换挡齿20，使得9挡的换挡齿20与换挡齿固定槽21自动分离，也即使得9挡的换挡齿装置19与9挡的输入齿轮能够自动分离。正是这种设计，使得在从9挡切换至4挡的过程中，能够先结合内离合器12再分离外离合器11，实现无时延无间歇换挡。In the embodiment of the present application, during the process of shifting the gearbox 1 from the 9th gear to the 4th gear, the 9th gear shift gear 19 and the 9th gear input gear can be automatically separated. Specifically, after the inner clutch 12 is switched from the disengaged state to the engaged state, the inner clutch 12 will drive the outer input shaft 13 to rotate, and the outer input shaft 13 will further drive the output shaft 15 to rotate. At this time, the 9-speed gear shift device The rotation speed of the input gears of the 19th and 9th gears is no longer the same. Therefore, there will be relative movement between the 9th gear shifting tooth 20 and the shifting tooth fixing groove 21. Because there is a smooth protrusion 212 in the shifting tooth fixing groove 21, With the help of the smooth protrusion 212, the shifting tooth 20 can be pushed out, so that the 9th gear shifting tooth 20 is automatically separated from the shifting tooth fixing groove 21, that is, the 9th gear shifting gear device 19 and the 9th gear input The gears can be separated automatically. It is this design that makes it possible to first engage the inner clutch 12 and then disengage the outer clutch 11 in the process of shifting from the 9th gear to the 4th gear, so as to realize no time delay and no intermittent shifting.

下面，以从4挡降至3挡的降挡过程为例，对挡位切换过程进行介绍说明：Below, taking the downshift process from 4th gear to 3rd gear as an example, the gear switching process will be introduced and explained:

当变速箱1处于4挡工作状态时，内离合器12处于结合状态，外离合器11处于分离状态。如图8所示，由于4挡的换挡齿装置19设置在4挡的输出齿轮旁边，因此该4挡的换挡齿装置19与4挡的输出齿轮啮合。内离合器12带动外输入轴13转动，外输入轴13带动外输入轴13上的4挡的输入齿轮转动，4挡的输入齿轮带动输出轴15上的4挡的输出齿轮转动，4挡的输出齿轮由于与4挡的换挡齿装置19啮合，因此通过该4挡的换挡齿装置19带动输出轴15转动。When the gearbox 1 is in the 4th gear working state, the inner clutch 12 is in the connected state, and the outer clutch 11 is in the disengaged state. As shown in FIG. 8, since the 4th gear shift gear device 19 is arranged beside the 4th gear output gear, the 4th gear shift gear device 19 meshes with the 4th gear output gear. The inner clutch 12 drives the outer input shaft 13 to rotate, the outer input shaft 13 drives the 4-speed input gear on the outer input shaft 13 to turn, the 4-speed input gear drives the 4-speed output gear on the output shaft 15 to turn, the 4-speed output Since the gear meshes with the gear shifting device 19 of the 4th gear, the gear shifting device 19 of the 4th gear drives the output shaft 15 to rotate.

在变速箱1从4挡切换至3挡的过程中，如图8所示，由于3挡的换挡齿装置19设置在3挡的输出齿轮旁边，因此该3挡的换挡齿装置19与3挡的输出齿轮啮合，与此同时或者在3挡的换挡齿装置19与3挡的输出齿轮啮合之后，4挡的换挡齿装置19与4挡的输出齿轮分离；外离合器11由分离状态切换为结合状态，待外离合器11结合之后，内离合器12从结合状态切换为分离状态，变速箱1切换至3挡工作状态。In the process of shifting the gearbox 1 from the 4th to the 3rd gear, as shown in Figure 8, the 3rd gear shifting gear 19 is arranged next to the 3rd gear output gear, so the 3rd gear shifting gear 19 and The output gear of the 3rd gear meshes at the same time or after the gear shifting device 19 of the 3rd gear meshes with the output gear of the 3rd gear, the gear shifting device 19 of the 4th gear is separated from the output gear of the 4th gear; the outer clutch 11 is separated by The state is switched to the engaged state. After the outer clutch 11 is engaged, the inner clutch 12 is switched from the engaged state to the disengaged state, and the gearbox 1 is switched to the 3rd gear working state.

在本申请实施例中，在变速箱1从4挡切换至3挡的过程中，4挡的换挡齿装置19与4挡的输出齿轮能够自动分离。具体来讲，在外离合器11由分离状态切换为结合状态之后，外离合器11便会带动内输入轴14转动，内输入轴14进一步带动输出轴15转动，由于此时4挡的换挡齿装置19与4挡的输出齿轮的转速不再相同，因此4挡的换挡齿20与换挡齿固定槽21之间会产生相对运动，由于换挡齿固定槽21中存在平滑凸起部212，借助于该平滑凸起部212能够顶开换挡齿20，使得4挡的换挡齿20与换挡齿固定槽21自动分离，也即使得4挡的换挡齿装置19与4挡的输出齿轮能够自动分离。正是这种设计，使得在从4挡切换至3挡的过程中，能够先结合外离合器11再分离内离合器12，实现无时延无间歇换挡。In the embodiment of the present application, when the gearbox 1 is shifted from the 4th gear to the 3rd gear, the 4th gear shift gear device 19 and the 4th gear output gear can be automatically separated. Specifically, after the outer clutch 11 is switched from the disengaged state to the engaged state, the outer clutch 11 will drive the inner input shaft 14 to rotate, and the inner input shaft 14 will further drive the output shaft 15 to rotate. At this time, the 4-speed gear shift device 19 The speed of the output gear is no longer the same as that of the 4th gear. Therefore, there will be relative movement between the 4th gear shifting tooth 20 and the shifting tooth fixing groove 21. Because of the smooth protrusion 212 in the shifting tooth fixing groove 21, The smooth protrusion 212 can push the shifting tooth 20 away, so that the shifting tooth 20 of the 4th gear is automatically separated from the shifting tooth fixing groove 21, that is, the shifting gear device 19 of the 4th gear and the output gear of the 4th gear are automatically separated. Able to separate automatically. It is this design that makes it possible to first combine the outer clutch 11 and then disengage the inner clutch 12 during the process of shifting from the 4th gear to the 3rd gear, so as to realize no time delay and no intermittent gear shift.

上面通过几个示例，对升挡和降挡过程进行了示例性地介绍说明，对于其它各个挡位之间的切换过程，与上述示例相类似。在本申请实施例中，任意两个挡位之间的升挡过程，以及任意两个挡位之间的降挡过程，均能够实现无时延无间歇换挡。The above examples are used to illustrate the upshift and downshift processes. The process of switching between other gears is similar to the above example. In the embodiment of the present application, the upshifting process between any two gears and the downshifting process between any two gears can achieve no time delay and no intermittent shift.

综上所述，本申请实施例提供的技术方案中，在变速箱进行换挡的过程中，借助于换挡齿装置与活动齿轮之间的平滑凸起部，使得原始挡位的换挡齿装置与该原始挡位的活动齿轮能够自动分离，正是这种设计，使得在从原始挡位切换至目标挡位的过程中，能够先结合目标挡位的离合器再分离原始挡位的离合器，实现无间歇变速，在换挡时没有时延。In summary, in the technical solution provided by the embodiments of the present application, during the gear shifting process of the gearbox, the smooth protrusion between the gear shifting device and the movable gear makes the shifting gear of the original gear The device can be automatically separated from the movable gear of the original gear. It is this design that enables the clutch of the target gear to be combined first and then the clutch of the original gear to be disconnected during the process of switching from the original gear to the target gear. Achieve non-intermittent speed change and no time delay when shifting gears.

在示例性实施例中，如图8所示，变速箱1还包括动力组件16。动力组件16分别通过第一连接组件22和第二连接组件23，与内输入轴14和外输入轴13分别连接。动力组件16能够通过第一连接组件22向内输入轴14施加动力，动力组件16也能够通过第二连接组件23向外输入轴13施加动力。In an exemplary embodiment, as shown in FIG. 8, the gearbox 1 further includes a power assembly 16. The power assembly 16 is respectively connected to the inner input shaft 14 and the outer input shaft 13 through the first connecting assembly 22 and the second connecting assembly 23. The power component 16 can apply power to the inner input shaft 14 through the first connection component 22, and the power component 16 can also apply power to the outer input shaft 13 through the second connection component 23.

在从第一工作状态切换至第二工作状态的过程中，动力组件16通过第二连接组件23带动外输入轴13转动，使得第二挡位的换挡齿装置19的转速与第二挡位的活动齿轮18的转速相同；待转速相同之后，第二挡位的换挡齿装置19与第二挡位的活动齿轮18啮合。In the process of switching from the first working state to the second working state, the power assembly 16 drives the outer input shaft 13 to rotate through the second connecting assembly 23, so that the rotation speed of the gear shifting device 19 in the second gear is the same as the second gear. The rotating speeds of the movable gears 18 are the same; after the rotating speeds are the same, the gear shifting device 19 of the second gear meshes with the movable gear 18 of the second gear.

在从第二工作状态切换至第一工作状态的过程中，动力组件16通过第一连接组件22带动内输入轴14转动，使得第一挡位的换挡齿装置19的转速与第一挡位的活动齿轮18的转速相同；待转速相同之后，第一挡位的换挡齿装置19 与第一挡位的活动齿轮18啮合。In the process of switching from the second working state to the first working state, the power assembly 16 drives the inner input shaft 14 to rotate through the first connecting assembly 22, so that the rotation speed of the gear shifting device 19 in the first gear is the same as that of the first gear. The rotating speeds of the movable gears 18 are the same; after the rotating speeds are the same, the shift gear device 19 of the first gear meshes with the movable gear 18 of the first gear.

以从1挡升至2挡的升挡过程为例，假设1挡的输入齿轮与1挡的输出齿轮的齿比为1:3，2挡的输入齿轮与2挡的输出齿轮的齿比为1:2。假设在1挡工作状态下，内输入轴14的转速为3000r/min，则输出轴15的转速为1000r/min。在1挡工作状态下，2挡的换挡齿装置19的转速与输出轴15的转速相同，均为1000r/min，但由于2挡的输出齿轮为活动齿轮，其转速与输出轴15的转速可能并不相同。为了在控制2挡的换挡齿装置19与2挡的输出齿轮啮合时，两者之间不出现打齿的情况，可以控制动力组件16通过第二连接组件23带动外输入轴13转动，如控制外输入轴13的转速为2000r/min，2挡的输入齿轮与2挡的输出齿轮的齿比为1:2，因此当外输入轴13的转速为2000r/min，2挡的输出齿轮的转速为1000r/min。这样，在2挡的换挡齿装置19的转速与2挡的输出齿轮的转速相同(均为1000r/min)时，再控制2挡的换挡齿装置19与2挡的输出齿轮啮合，则不会出现打齿的情况。Take the upshift process from 1st gear to 2nd gear as an example, suppose the gear ratio of the input gear of 1st gear to the output gear of 1st gear is 1:3, and the gear ratio of the input gear of 2nd gear to the output gear of 2nd gear is 1:2. Assuming that in the first gear working state, the rotational speed of the inner input shaft 14 is 3000 r/min, the rotational speed of the output shaft 15 is 1000 r/min. In the first gear working state, the speed of the gear shifting device 19 of the second gear is the same as the speed of the output shaft 15, both 1000r/min, but because the output gear of the second gear is a movable gear, its speed is the same as that of the output shaft 15. It may not be the same. In order to control the gear shifting device 19 of 2nd gear to mesh with the output gear of 2nd gear, there is no gearing between the two, the power assembly 16 can be controlled to drive the outer input shaft 13 to rotate through the second connecting assembly 23, such as The rotation speed of the control external input shaft 13 is 2000r/min, and the gear ratio of the input gear of the 2nd gear to the output gear of the 2nd gear is 1:2, so when the rotation speed of the external input shaft 13 is 2000r/min, the output gear of the 2nd gear is The speed is 1000r/min. In this way, when the rotation speed of the second gear shifting gear device 19 is the same as the rotation speed of the second gear output gear (both are 1000r/min), then the second gear shifting gear device 19 is controlled to mesh with the second gear output gear, then There will be no tooth punching.

以从9挡降至4挡的降挡过程为例，假设9挡的输入齿轮与9挡的输出齿轮的齿比为3:1，4挡的输入齿轮与4挡的输出齿轮的齿比为1:1。假设在9挡工作状态下，内输入轴14的转速为3000r/min，则输出轴15的转速为9000r/min。在9挡工作状态下，4挡的换挡齿装置19的转速与输出轴15的转速相同，均为9000r/min，但由于4挡的输出齿轮为活动齿轮，其转速与输出轴15的转速可能并不相同。为了在控制4挡的换挡齿装置19与4挡的输出齿轮啮合时，两者之间不出现打齿的情况，可以控制动力组件16通过第二连接组件23带动外输入轴13转动，如控制外输入轴13的转速为9000r/min，4挡的输入齿轮与4挡的输出齿轮的齿比为1:1，因此当外输入轴13的转速为9000r/min，4挡的输出齿轮的转速为9000r/min。这样，在4挡的换挡齿装置19的转速与4挡的输出齿轮的转速相同(均为9000r/min)时，再控制4挡的换挡齿装置19与4挡的输出齿轮啮合，则不会出现打齿的情况。Take the downshift process from 9th gear to 4th gear as an example, suppose the gear ratio of 9th gear input gear to 9th gear output gear is 3:1, 4th gear input gear to 4th gear output gear ratio is 1:1. Assuming that in the 9-gear working state, the rotation speed of the inner input shaft 14 is 3000 r/min, and the rotation speed of the output shaft 15 is 9000 r/min. In the 9th gear working state, the speed of the gear shifting device 19 of the 4th gear is the same as the speed of the output shaft 15, both are 9000r/min, but since the output gear of the 4th gear is a movable gear, its speed is the same as that of the output shaft 15. It may not be the same. In order to control the engagement of the gear shifting device 19 of the 4th gear with the output gear of the 4th gear without gearing between the two, the power assembly 16 can be controlled to drive the outer input shaft 13 to rotate through the second connecting assembly 23, such as The rotation speed of the control external input shaft 13 is 9000r/min, and the gear ratio of the input gear of the 4th gear to the output gear of the 4th gear is 1:1, so when the rotation speed of the external input shaft 13 is 9000r/min, the output gear of the 4th gear is The speed is 9000r/min. In this way, when the speed of the 4th gear shifting gear device 19 is the same as the speed of the 4th gear output gear (both are 9000r/min), then the 4th gear shifting gear device 19 is controlled to mesh with the 4th gear output gear, then There will be no tooth punching.

上面通过几个示例，对升挡和降挡过程进行了示例性地介绍说明，对于其它各个挡位之间的切换过程，与上述示例相类似。在本申请实施例中，任意两个挡位之间的升挡过程，以及任意两个挡位之间的降挡过程，均不会出现打齿的情况。另外，上述示例中关于齿比、转速的数值举例进行示例性和解释性的，为了清楚说明本申请技术方案的原理，在实际应用中，可以根据实际需求设定合适的齿比和转速，本申请实施例对此不作限定。The above examples are used to illustrate the upshift and downshift processes. The process of switching between other gears is similar to the above example. In the embodiment of the present application, neither the upshifting process between any two gears nor the downshifting process between any two gears will cause a gear hit. In addition, the numerical examples of gear ratio and speed in the above examples are illustrative and explanatory. In order to clearly illustrate the principle of the technical solution of this application, in practical applications, suitable gear ratio and speed can be set according to actual needs. The application embodiment does not limit this.

可选地，动力组件16包括第一电机和第二电机。第一电机通过第一连接组件22与内输入轴14连接，第一连接组件22包括设置于第一电机的动力输出端的第一主动齿轮，以及设置于内输入轴14上且与第一主动齿轮啮合的第一从动齿轮；第二电机通过第二连接组件23与外输入轴13连接，第二连接组件23包括设置于第二电机的动力输出端的第二主动齿轮，以及设置于外输入轴13上且与第二主动齿轮啮合的第二从动齿轮。通过上述方式，实现将动力组件16的动力传输给输入轴，带动输入轴转动。Optionally, the power assembly 16 includes a first motor and a second motor. The first motor is connected to the inner input shaft 14 through the first connecting assembly 22. The first connecting assembly 22 includes a first driving gear disposed on the power output end of the first motor, and a first driving gear disposed on the inner input shaft 14 and connected to the first driving gear Meshing first driven gear; the second motor is connected to the outer input shaft 13 through a second connecting assembly 23, the second connecting assembly 23 includes a second driving gear arranged on the power output end of the second motor, and arranged on the outer input shaft 13 and the second driven gear meshed with the second driving gear. Through the above method, the power of the power assembly 16 is transmitted to the input shaft to drive the input shaft to rotate.

综上所述，本申请实施例提供的技术方案中，还通过在变速箱中设计动力组件，在换挡过程中，通过该动力组件带动输入轴转动，使得目标挡位的换挡齿装置与活动齿轮的转速相同之后，再控制两者啮合，从而避免出现打齿的情况，提升变速箱的换挡性能和使用寿命。In summary, in the technical solution provided by the embodiments of the present application, the power assembly is also designed in the gearbox. During the shifting process, the power assembly drives the input shaft to rotate, so that the gear shifting device of the target gear and After the rotating speed of the movable gear is the same, the two are controlled to mesh, so as to avoid the situation of tooth knocking and improve the shifting performance and service life of the gearbox.

本申请一示例性实施例还提供了一种汽车，该汽车包括如上文实施例介绍的变速箱。汽车是指由动力驱动，具有4个或4个以上车轮的非轨道承载的车辆，主要用于载运人员和/或货物，牵引载运人员和/或货物的车辆，或者其它特殊用途。在本申请实施例中，对汽车的种类不作具体限定。An exemplary embodiment of the present application also provides an automobile, which includes the gearbox described in the above embodiment. Automobile refers to a non-track-carrying vehicle driven by power and having 4 or more wheels. It is mainly used for carrying people and/or goods, traction and carrying people and/or goods, or other special purposes. In the embodiments of the present application, the types of automobiles are not specifically limited.

配备有本申请实施例提供的变速箱的汽车，能够实现无间歇变速，在换挡时没有时延，无因时延产生的顿挫感，驾驶体验更佳。A car equipped with the gearbox provided in the embodiments of the present application can realize non-intermittent shifting, without time delay when shifting gears, and without frustration caused by time delay, and has a better driving experience.

上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。The serial numbers of the foregoing embodiments of the present application are for description only, and do not represent the superiority of the embodiments.

以上所述仅为本申请的示例性实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above are only exemplary embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

一种变速箱的换挡机构，其特征在于，所述换挡机构包括：同轴设置的活动齿轮和换挡齿装置；A gear shifting mechanism of a gearbox, characterized in that the shifting mechanism includes: a coaxially arranged movable gear and a shifting gear device;

所述活动齿轮和所述换挡齿装置之间形成有相啮合的换挡齿和换挡齿固定槽；A shifting tooth and a shifting tooth fixing groove that mesh with each other are formed between the movable gear and the shifting gear device;

所述换挡齿固定槽中形成有至少一个平滑凸起部。At least one smooth protrusion is formed in the shift tooth fixing groove.
根据权利要求1所述的换挡机构，其特征在于，所述换挡齿固定槽呈环状，且所述换挡齿固定槽中存在至少两个与所述换挡齿相适配的固定齿，相邻两个所述固定齿之间形成有所述平滑凸起部。The shifting mechanism according to claim 1, wherein the shifting tooth fixing groove is ring-shaped, and there are at least two fixed grooves matching the shifting tooth in the shifting tooth fixing groove. Teeth, the smooth protrusions are formed between two adjacent fixed teeth.
根据权利要求2所述的换挡机构，其特征在于，所述平滑凸起部位于相邻两个所述固定齿的中间位置。The shift mechanism according to claim 2, wherein the smooth protrusion is located in the middle of two adjacent fixed teeth.
根据权利要求1所述的换挡机构，其特征在于，所述换挡齿装置包括设置于轴上的换挡齿基座，以及与所述换挡齿基座通过花键连接的换挡齿；The shift mechanism according to claim 1, wherein the shift gear device includes a shift tooth base provided on the shaft, and a shift tooth connected to the shift tooth base through a spline ；

所述活动齿轮的侧边，形成有与所述换挡齿对应的换挡齿固定槽。The side of the movable gear is formed with a shift tooth fixing groove corresponding to the shift tooth.
根据权利要求1所述的换挡机构，其特征在于，所述换挡齿装置包括设置于轴上的换挡齿基座，以及与所述换挡齿基座通过花键连接的换挡齿固定槽；The shift mechanism according to claim 1, wherein the shift gear device includes a shift tooth base provided on the shaft, and a shift tooth connected to the shift tooth base through a spline Fixed slot

所述活动齿轮的侧边，形成有与所述换挡齿固定槽对应的换挡齿。A shift tooth corresponding to the shift tooth fixing groove is formed on the side of the movable gear.
根据权利要求4或5所述的换挡机构，其特征在于，The shift mechanism according to claim 4 or 5, wherein:

所述换挡齿基座上形成有第一限位槽，所述换挡齿或所述换挡齿固定槽上形成有与所述第一限位槽对应的第二限位槽；A first limit groove is formed on the shift tooth base, and a second limit groove corresponding to the first limit groove is formed on the shift tooth or the shift tooth fixing groove;

所述第一限位槽中设置有弹力件以及位于所述弹力件顶部的钢珠；An elastic member and a steel ball on the top of the elastic member are provided in the first limiting groove;

在所述活动齿轮和所述换挡齿装置处于分离状态的情况下，所述钢珠的一部分位于所述第一限位槽中，且另一部分位于所述第二限位槽中。When the movable gear and the gear shifting device are in a separated state, a part of the steel ball is located in the first limiting groove, and the other part is located in the second limiting groove.
根据权利要求6所述的换挡机构，其特征在于，所述第一限位槽的数量为多个，且所述多个第一限位槽在所述换挡齿基座上绕轴均匀分布。The shift mechanism according to claim 6, wherein the number of the first limit grooves is multiple, and the plurality of first limit grooves are evenly around the axis on the shift tooth base distributed.
根据权利要求1所述的换挡机构，其特征在于，所述平滑凸起部的高度与所述换挡齿固定槽的凹槽深度相同。The shift mechanism according to claim 1, wherein the height of the smooth protrusion is the same as the depth of the groove of the shift tooth fixing groove.
根据权利要求1所述的换挡机构，其特征在于，所述换挡机构还包括电磁拨叉，所述电磁拨叉包括：壳体，设置于所述壳体中的第一固定块、第二固定块和活动块，以及与所述活动块相连的拨叉件；The shift mechanism according to claim 1, wherein the shift mechanism further comprises an electromagnetic shift fork, and the electromagnetic shift fork comprises: a housing, a first fixing block and a second fixing block arranged in the housing Two fixed blocks and movable blocks, and a fork piece connected with the movable block;

所述第一固定块和所述第二固定块的位置固定；The positions of the first fixed block and the second fixed block are fixed;

所述活动块位于所述第一固定块和所述第二固定块之间，且所述活动块与所述第一固定块和所述第二固定块之间，分别通过电磁耦合；The movable block is located between the first fixed block and the second fixed block, and the movable block is electromagnetically coupled to the first fixed block and the second fixed block respectively;

所述拨叉件的一端与所述活动块连接，所述拨叉件的另一端与所述换挡齿装置连接。One end of the fork member is connected with the movable block, and the other end of the fork member is connected with the gear shifting device.
一种变速箱，其特征在于，所述变速箱包括：外离合器、内离合器、外输入轴、内输入轴和输出轴；A gearbox, characterized in that the gearbox includes: an outer clutch, an inner clutch, an outer input shaft, an inner input shaft, and an output shaft;

所述外输入轴和所述内输入轴同轴布置；所述外离合器与所述内输入轴连接，所述内离合器与所述外输入轴连接；The outer input shaft and the inner input shaft are coaxially arranged; the outer clutch is connected with the inner input shaft, and the inner clutch is connected with the outer input shaft;

所述外输入轴和所述内输入轴上设有各挡位的输入齿轮，所述输出轴上设有与所述输入轴齿轮相啮合的各挡位的输出齿轮；其中，所述输入齿轮包括固定齿轮和活动齿轮两种类型，所述输出齿轮也包括所述固定齿轮和所述活动齿轮两种类型，所述活动齿轮对应设置有换挡齿装置；The outer input shaft and the inner input shaft are provided with input gears of various gears, and the output shaft is provided with output gears of various gears meshing with the input shaft gear; wherein, the input gear It includes two types, a fixed gear and a movable gear, the output gear also includes two types, the fixed gear and the movable gear, and the movable gear is correspondingly provided with a gear shifting device;

所述活动齿轮和所述换挡齿装置之间形成有相啮合的换挡齿和换挡齿固定槽，所述换挡齿固定槽中形成有至少一个平滑凸起部；A shifting tooth and a shifting tooth fixing groove that mesh with each other are formed between the movable gear and the shifting tooth device, and at least one smooth protrusion is formed in the shifting tooth fixing groove;

在第一工作状态下，所述外离合器带动所述内输入轴转动，所述内输入轴带动所述内输入轴上的第一挡位的输入齿轮转动，所述第一挡位的输入齿轮带动所述输出轴上的所述第一挡位的输出齿轮转动，所述第一挡位的输出齿轮带动所述输出轴转动；In the first working state, the outer clutch drives the inner input shaft to rotate, the inner input shaft drives the first gear input gear on the inner input shaft to rotate, and the first gear input gear Driving the output gear of the first gear on the output shaft to rotate, and the output gear of the first gear driving the output shaft to rotate;

在第二工作状态下，所述内离合器带动所述外输入轴转动，所述外输入轴带动所述外输入轴上的第二挡位的输入齿轮转动，所述第二挡位的输入齿轮带动所述输出轴上的所述第二挡位的输出齿轮转动，所述第二挡位的输出齿轮带动所述输出轴转动；In the second working state, the inner clutch drives the outer input shaft to rotate, the outer input shaft drives the second gear input gear on the outer input shaft to rotate, and the second gear input gear Driving the output gear of the second gear on the output shaft to rotate, and the output gear of the second gear driving the output shaft to rotate;

在从所述第一工作状态切换至所述第二工作状态的过程中，所述第二挡位的换挡齿装置与所述第二挡位的活动齿轮啮合，所述内离合器结合，待所述内离合器结合之后，所述外离合器分离；In the process of switching from the first working state to the second working state, the gear shifting device of the second gear meshes with the movable gear of the second gear, and the internal clutch is engaged, waiting After the inner clutch is connected, the outer clutch is disconnected;

在从所述第二工作状态切换至所述第一工作状态的过程中，所述第一挡位的换挡齿装置与所述第一挡位的活动齿轮啮合，所述外离合器结合，待所述外离合器结合之后，所述内离合器分离。In the process of switching from the second working state to the first working state, the gear shifting device of the first gear meshes with the movable gear of the first gear, and the outer clutch is engaged, waiting After the outer clutch is connected, the inner clutch is disconnected.