CN220816339U

CN220816339U - Disconnect module, power transmission system of vehicle and vehicle

Info

Publication number: CN220816339U
Application number: CN202322380965.5U
Authority: CN
Inventors: 胡勋; 李璐; 李春; 石磊; 韩叶飞
Original assignee: Valeo Embrayages SAS
Current assignee: Valeo Embrayages SAS
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-04-19
Anticipated expiration: 2033-09-01

Abstract

The utility model relates to a disconnection module (10) for engaging or disengaging a first component (20) rotatable about a first axis (30), comprising: a clutch (12) rotationally fixedly mounted to the first shaft; a driving member (11) axially arranged between the first member and the clutch member and fixedly connected to the first member; wherein the clutch member is axially reciprocable for engagement and disengagement with the drive member, in an engaged condition the first shaft rotates with the first member, and in a disengaged condition the first shaft is independent of the first member. The utility model also relates to a drivetrain of a vehicle comprising said disconnect module, and to a vehicle comprising said drivetrain. The disconnection module according to the utility model makes full use of the axial space left unused in the existing devices, thus advantageously reducing the axial length of the whole assembly.

Description

Disconnect module, power transmission system of vehicle and vehicle

Technical Field

The utility model relates to a disconnection module for engaging or disengaging a first component rotatable about a first axis with the first axis. The utility model also relates to a driveline of a vehicle comprising the disconnect module. The utility model further relates to a vehicle comprising the driveline.

Background

The trend to design and manufacture fuel efficient, low emission vehicles has greatly increased, which is necessarily due to concerns over the environment and increased fuel costs. The forefront of this trend is the development of electric vehicles, such as all-electric vehicles, hybrid vehicles, plug-in hybrid vehicles, extended range electric vehicles, fuel cell vehicles, and the like.

The front and rear sides of the four-wheel drive electric vehicle are respectively provided with a motor, which is generally divided into a main drive motor and an auxiliary drive motor, wherein the auxiliary drive motor can be in a non-working state under certain conditions. For example, the auxiliary motor may be engaged during acceleration or special conditions, or may be engaged when the driver needs to achieve some high performance mode. However, when the auxiliary motor stops running, the wheels still drive the auxiliary differential, which drives all the transmission mechanisms and motors connected with the differential to rotate together, so that drag loss is generated. To increase efficiency, disconnect mechanisms are added to the driveline of the electric vehicle to reduce drag losses.

Conventional disconnect mechanisms utilize, for example, only a spline connection to disconnect idler gears supported on a drive shaft. The idler gear is configured with a splined axially protruding end on the inner side adjacent the drive shaft. The clutch is typically reciprocated axially linearly by a fork to engage and disengage the spline. Disadvantageously, however, the disconnect mechanism and the entire driveline typically require a large axial space due to the spatial location of such spline connection and the required engagement length thereof.

Disclosure of utility model

The technical problem underlying the present utility model is to overcome the drawbacks or deficiencies of the prior art described above by providing a disconnection module which is capable of reducing the axial length of the whole assembly and which is easy to assemble.

The technical problems are solved by the following technical proposal.

According to one aspect of the present utility model, there is provided a disconnection module for engaging or disengaging a first member rotatable about a first axis with or from the first axis, the disconnection module comprising:

a clutch member rotatably fixedly mounted to the first shaft;

A driving member axially disposed between the first member and the clutch member and fixedly connected to the first member;

Wherein the clutch member is axially reciprocable for engagement and disengagement with the drive member, in an engaged condition the first shaft rotates with the first member, and in a disengaged condition the first shaft is independent of the first member.

The present utility model splits a conventional clutch into two members, namely, a driving member fixedly connected to a first member and a clutch member provided to be capable of engaging with and disengaging from the driving member, thereby transmitting a driving force from the first member by means of the driving member. Since the driving member is spatially closely coupled to the first member, the axial space available in the prior art device is fully utilized, thereby advantageously reducing the axial length of the overall assembly.

In an exemplary embodiment, the driving member is provided with a first connection portion on a side facing the first member, which connection portion is engageable with a corresponding connection portion provided on the first member to fixedly connect the driving member with the first member.

In an exemplary embodiment, the first connection portion is a driving pin and the corresponding connection portion is an opening.

In an exemplary embodiment, the driving pins are a plurality of driving pins uniformly distributed in a circumferential direction.

In one exemplary embodiment, the driving member has a first engagement portion, and the clutch member has a second engagement portion, the first engagement portion being engageable with the second engagement portion.

In an exemplary embodiment, the first engagement portion and the second engagement portion are each provided as end face teeth.

In an exemplary embodiment, the disconnection module comprises a bearing, by means of which the drive is supported on the first shaft.

In an exemplary embodiment, the disconnection module comprises a first collar provided on the drive, which first collar abuts against a side of the outer ring of the bearing facing the first component.

In an exemplary embodiment, the disconnect module includes a reset mechanism for biasing the clutch toward a disengaged position from the drive member.

In one exemplary embodiment, one end of the reset mechanism is abutted against the inner ring of the bearing, and the other end is abutted against the clutch piece.

In one exemplary embodiment, the return mechanism is a belleville spring.

In one exemplary embodiment, the disconnect module includes an electromagnetic actuator including an armature configured to apply an axial force to the clutch member to engage the clutch member with the driver member.

In an exemplary embodiment, the disconnection module comprises a second collar, which is located on the side of the electromagnetic actuator remote from the clutch and is arranged to axially stop the electromagnetic actuator.

In an exemplary embodiment, the first component is a idler gear in a reduction gear, and the drive element is fixedly connected to an end face of the idler gear.

According to another aspect of the present utility model, there is provided a power transmission system of a vehicle, including: a motor having a drive shaft; a speed reducer having at least one transmission shaft; and the disconnect module of the foregoing, wherein the first shaft comprises the drive shaft or the at least one drive shaft.

According to another aspect of the utility model there is provided a vehicle comprising a driveline as hereinbefore described.

These and other features, aspects, and advantages of the present application will become better understood with reference to the following description. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Drawings

The accompanying drawings are incorporated in and constitute a part of this specification. The accompanying drawings, together with the general description above, serve to explain the principles of the utility model in conjunction with the detailed description of exemplary embodiments and methods given below. The objects and advantages of the present utility model will appear upon studying the following specification, taken in conjunction with the accompanying drawings, wherein like elements are given the same or similar reference numerals, and wherein:

FIG. 1 illustrates a partial schematic view of an exemplary embodiment of a disconnect module in accordance with the present utility model;

Fig. 2 shows an exploded schematic view of the disconnection module according to the utility model in fig. 1;

Fig. 3 shows a schematic view of a partial installation of a disconnection module according to the utility model.

In the figure:

The first member 20 of the disconnect module 10 first shaft 30 first spline 30a

The driving member 11 drives the first engagement portion 11b of the pin 11a

Second engaging portion 12b of second spline 12a of clutch member 12

Reset mechanism 14 of outer ring 13a and inner ring 13b of bearing 13

Electromagnetic actuator 15 armature 15a first collar 16 second collar 17

Detailed Description

Reference will now be made in detail to the exemplary embodiments and methods of the present utility model as illustrated in the accompanying drawings, in which like reference numerals identify identical or corresponding parts. It should be noted, however, that the utility model in its broader aspects is not limited to the specific details, the representative apparatus and method, and illustrative examples shown and described in connection with the exemplary embodiments and methods.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Where the number of components is not specified, the number of components may be one or more; likewise, the terms "a," "an," "the," and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships when the apparatus is in use or positional relationships shown in the drawings, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly. Unless explicitly described otherwise, the terms "connected," "coupled," and the like refer to a relationship wherein structures are fixed or attached to one another either directly or indirectly through intervening structures.

Reference is now made to the drawings, wherein like numerals represent like elements throughout.

Fig. 1 shows a partial schematic view of an exemplary embodiment of a disconnection module 10 according to the present utility model. Fig. 2 shows an exploded schematic view of the disconnection module 10 according to the utility model in fig. 1. The components and application of the disconnect module 10 of the present utility model can be better understood in conjunction with fig. 1 and 2.

The disconnection module 10 according to the present utility model is used to engage or disengage a first component 20 rotatable about a first shaft 30 with the first shaft 30. The first shaft 30 is shown to include the drive shaft and the at least one drive shaft. The first member 20 is a gear wheel supported on the first shaft.

The disconnection module 10 includes: a clutch member 12 rotatably fixedly mounted to the first shaft 30; a driving member 11 axially arranged between the first member 20 and the clutch member 12 and fixedly connected to the first member 20; wherein the clutch member 12 is axially reciprocable for engagement and disengagement with the drive member 11, in an engaged state the first shaft 30 rotates with the first member 20, and in a disengaged state the first shaft 30 is independent of the first member 20.

It should be noted that "rotationally fixed" as used herein refers to two members that are connected so as to be capable of rotation together, and that their mutual movement in a rotational direction (e.g., circumferential direction) is restricted so as to be capable of rotation together. The "rotationally fixed" does not restrict the displacement in the direction of the rotation axis, and therefore, the rotationally fixed two members can be relatively displaced in the direction of the rotation axis. If the displacement in the direction of the rotation axis is also fixed, the two components can be considered to be completely fixedly connected. In the present exemplary embodiment, the clutch member 12 is rotationally fixed to the first shaft 30 through spline connection, that is, the first shaft 30 is provided with a first spline 30a, and the clutch member 12 is provided with a second spline 12a that cooperates with the first spline 30 a; and the driving member 11 is fixedly connected to the first member 20.

It should be noted that, in the disengaged state, the first shaft 30 is independent of the first member 20, which means that the moving state of the first shaft 30 is independent of the moving state of the first member 20, that is, the first shaft 30 and the first member 20 can rotate independently, and not that there is no connection therebetween.

The disconnect module 10 of the present utility model splits the conventional clutch into two components, namely a driving member 11 and a clutch member 12, wherein the driving member 11 is fixedly connected to the first member 20, and the clutch member 12 is provided to be capable of engaging and disengaging with the driving member 11, thereby transmitting a driving force from the first member 20 using the driving member 11. Since the drive member 11 is spatially closely coupled to the first member 20, the unused axial space of the prior art device is fully utilized, thereby advantageously reducing the axial length of the overall assembly as compared to conventional clutches.

In the present exemplary embodiment, the first part 20 is a idler gear in a reduction gear and has an end face 21 facing the driver 11. The driving member 11 is provided with a plurality of transmission pins 11a uniformly distributed in the circumferential direction on a side facing the first member 20, the end surface of the first member 20 facing the driving member 11 is provided with a plurality of holes 21a uniformly distributed in the circumferential direction, and the transmission pins 11a can be engaged with the holes 21a to fixedly connect the driving member 11 with the first member 20.

Other means of connection may be employed to achieve a fixed connection of the driving member 11 and the clutch member 12 within the scope of the present utility model.

In the present exemplary embodiment, the driving member 11 has a first engagement portion 11b, and the clutch member 12 has a second engagement portion 12b, with which the first engagement portion can be engaged. In the present exemplary embodiment, the first engaging portion 11b and the second engaging portion 12b are each provided as end face teeth.

In further exemplary embodiments of the utility model, the driver 11 and the clutch 12 may also be engaged by circumferential splines.

In the present exemplary embodiment, the disconnection module 10 further comprises a bearing 13, by means of which bearing 13 the drive 11 is supported on said first shaft 30.

In the present exemplary embodiment, the disconnection module 10 further includes a return mechanism 14 for pressing the clutch member 12 toward a position disengaged from the driving member 11, with one end thereof abutting against the inner race 13b of the bearing 13 and the other end abutting against the clutch member 12. The return mechanism 14 is shown here as a Belleville spring, i.e. a Belleville spring. The axial deformation length of the spring is short, and the space is saved.

The axial deformation length of the disc spring is more easily matched with the engagement length of the end face teeth, so that the object of the present utility model is more effectively achieved.

Other types of return mechanisms may be used to effect the pressing of clutch member 12 within the scope of the present utility model.

The bearing 13 effectively realizes a connection between the drive element 11 and the clutch element 12. Since the inner ring of the bearing 13 is supported on the first shaft 30, on the one hand, a support of the drive element 11 is achieved and, on the other hand, a support is also provided for the cup spring, which is held against relative rotation with the clutch element 12 by being supported on the inner ring of the bearing 13, in order to be able to continuously press the clutch element 12 into a position disengaged from the drive element 11.

In the present exemplary embodiment, the disconnection module 10 further comprises an electromagnetic actuator 15 comprising an armature 15a able to exert an axial force on said clutch member 12 to engage said clutch member 12 with said driving member 11.

Here, the axial reciprocation of the clutch member 12 is achieved by a return mechanism 14 and an electromagnetic actuator 15, wherein the return mechanism 14 is employed to provide a force for disengaging the clutch member and the electromagnetic actuator 15 is employed to provide a force for engaging the clutch member.

In the present exemplary embodiment, the disconnection module 10 further includes: comprising a first collar 16 provided on the driving member 11, which abuts against the side of the outer ring 13a of the bearing 13 facing the first part 20.

In the present exemplary embodiment, the disconnection module 10 further comprises a second collar 17, located on the side of the electromagnetic actuator 15 remote from the clutch member 12, and arranged to axially stop the electromagnetic actuator 15.

In further exemplary embodiments of the utility model, a shoulder may be provided on the first shaft 30 to support the belleville springs so that the bearing 13 may be eliminated. Alternatively, the bearing 13 may be a bearing without an inner race, in which case the reset assembly is also supported by providing a shoulder on the first shaft.

Fig. 3 shows a partial installation schematic of the disconnection module 10 according to the utility model, in which it is visible that the drive element 11 is provided on the side facing the first component 20 with a plurality of transmission pins 11a distributed uniformly in the circumferential direction, the plurality of transmission pins 11a being intended to be fitted into a plurality of openings 21a on the end face 21 of the first component 20 facing the drive element 11 for the fixed connection of the drive element 11 with the first component 20. It is also possible to see that the drive element 11 is provided with a first engagement portion 11b, in this case an end tooth, on the side facing the clutch element 12.

The disconnect module of the present utility model has modular advantages in addition to those mentioned above, and the individual components can be packaged as a single module for provision, thereby enabling direct assembly on existing drive trains, reducing time and labor costs.

The power transmission system provided by the utility model comprises: a motor (not shown) having a drive shaft; a speed reducer (not shown) having at least one drive shaft; the module 10 is disconnected and the first shaft 30 is shown to include the drive shaft and the at least one drive shaft. The first member 20 is a gear wheel supported on the first shaft.

It should be appreciated that the drivetrain refers to devices that operate via electric drive. As an example, an electric machine, as a drive mechanism, may convert input electric energy into rotational mechanical energy, a decelerator mechanically coupled to the electric machine, regulate torque and rotational speed generated by the electric machine, and further transmit to wheels of a vehicle.

The at least one drive shaft of the retarder may comprise a retarder input shaft and an intermediate shaft arranged parallel to each other. The input shaft of the speed reducer can be provided with an input gear, and the input gear can be integrally formed on the input shaft of the speed reducer and is coaxially arranged with the input shaft of the speed reducer. The intermediate shaft may be provided with an intermediate first gear and an intermediate second gear. The intermediate first gear is in driving engagement with the input gear. The intermediate second gear may be in driving engagement with a driven gear connected to the differential. A two-stage helical gear parallel shaft reducer arrangement from the reducer input shaft to the differential is thereby achieved.

The operating mode of the disconnect module 10 of the present utility model in the driveline is as follows: when engagement is required, the armature 15a is energized and urges the clutch member 12 against the reaction force of the return mechanism 14 to effect engagement with the driver member 11, in which engaged state the driving force/torque from the motor can be transmitted to the differential 50 and the wheels connected thereto via the first shaft 30; on the contrary, when the armature 15a is required to be disengaged, the armature is powered off and retracted, the return mechanism 14 pushes the clutch member 12 to disengage from the driving member 11, the driving force/torque transmission is disconnected, and even if the wheels still drive the auxiliary driving differential to operate, the rotation of the wheels drives as few driving mechanisms as possible, so that the dragging loss is reduced.

The utility model provides a vehicle comprising a driveline as described above. The vehicle may be an electrified vehicle (ELECTRIFIED VEHICLE), such as a pure electric vehicle (BEV, battery ELECTRIC VEHICLE), a Hybrid electric vehicle (HEV, hybrid ELECTRIC VEHICLE), a Plug-in Hybrid ELECTRIC VEHICLE, a Range Extended ELECTRIFIED VEHICLE. The vehicle may also be a hydrogen-powered vehicle. It should be appreciated that the vehicle of the present utility model also has the advantages described above with respect to the disconnect module and the driveline.

While exemplary embodiments are set forth in the foregoing description, it should be noted that numerous variations are possible. It should furthermore be noted that the exemplary embodiments are only examples, and should not be construed as limiting the scope, applicability, and configuration of the device in any way according to the exemplary embodiments. Rather, the summary and description of the embodiments provide the practitioner with a guidance for implementing at least one exemplary embodiment, wherein various modifications can be made in the function and arrangement of the components without departing from the scope of protection as determined by the claims and the equivalent combination of features.

Claims

1. A disconnection module (10) for engaging or disengaging a first component (20) rotatable about a first axis (30) with the first axis (30), wherein the disconnection module (10) comprises:

a clutch (12) rotationally fixedly mounted to the first shaft (30);

A driving member (11) axially arranged between the first member (20) and the clutch member (12) and fixedly connected to the first member (20);

Wherein the clutch member (12) is axially reciprocable for engagement and disengagement with the drive member (11), in an engaged state the first shaft (30) rotates with the first component (20), and in a disengaged state the first shaft (30) is independent of the first component (20).

2. The disconnection module (10) according to claim 1, characterized in that the driving element (11) is provided with a first connection on the side facing the first component (20), which connection can be engaged with a corresponding connection provided on the first component (20) in order to fixedly connect the driving element (11) with the first component (20).

3. The disconnection module (10) according to claim 2, wherein the first connection is a driving pin (11 a) and the corresponding connection is an aperture.

4. A disconnection module (10) according to claim 3, characterized in that the transmission pins (11 a) are a plurality of transmission pins (11 a) distributed uniformly in the circumferential direction.

5. The disconnection module (10) according to claim 1, wherein the drive member (11) has a first engagement portion (11 b) and the clutch member (12) has a second engagement portion (12 b) with which the first engagement portion is engageable.

6. The disconnection module (10) according to claim 5, characterized in that the first engagement portion (11 b) and the second engagement portion (12 b) are each provided as end face teeth.

7. The disconnection module (10) according to claim 1, characterized in that the disconnection module (10) comprises a bearing (13), the drive (11) being supported on the first shaft (30) by means of the bearing (13).

8. The disconnection module (10) according to claim 7, characterized in that the disconnection module (10) comprises a first collar (16) provided on the drive member (11), which abuts against a side of the outer ring (13 a) of the bearing (13) facing the first component (20).

9. The disconnection module (10) according to claim 7, characterized in that the disconnection module (10) comprises a return mechanism (14) for pressing the clutch member (12) towards a position disengaged from the driving member (11).

10. The disconnection module (10) according to claim 9, wherein the return mechanism (14) has one end abutting against an inner ring (13 b) of the bearing (13) and the other end abutting against the clutch (12).

11. The disconnection module (10) according to claim 9 or 10, wherein the return mechanism (14) is a belleville spring.

12. The disconnect module (10) of claim 1, wherein the disconnect module (10) includes an electromagnetic actuator (15) including an armature (15 a) that is capable of applying an axial force to the clutch member (12) to engage the clutch member (12) with the drive member (11).

13. The disconnection module (10) according to claim 12, characterized in that the disconnection module (10) comprises a second collar (17) located on the side of the electromagnetic actuator (15) remote from the clutch (12) and arranged to axially stop the electromagnetic actuator (15).

14. The disconnection module (10) according to claim 1, wherein the first component (20) is a idler gear in a reduction gear, the drive member (11) being fixedly connected to an end face of the idler gear.

15. A drivetrain of a vehicle, comprising:

A motor having a drive shaft;

a speed reducer having at least one transmission shaft; and

The disconnection module (10) according to one of claims 1 to 14, wherein the first shaft (30) comprises the drive shaft or the at least one transmission shaft.

16. A vehicle comprising the drivetrain of claim 15.