A two-speed dry dual clutch for pure electric vehicles

Abstract

The present application discloses a two-speed dry dual clutch for pure electric vehicles, wherein one end of the C2 disc hub of the C2 driven disc is embedded in the driving disc hub of the driving disc and is coaxially connected to the driving disc, and the other end is embedded in the C1 disc hub of the C1 driven disc and is coaxially connected to the C1 driven disc; it also includes a pull rod, a guide rod, a C1 guide sleeve, a C1 release spring, a C2 guide sleeve and a C2 release spring. The problem that the two driven discs of the open dual clutch cannot be centered without the main shaft inserted is solved, while the design requirements of the intermediate positioning bearing are saved and the axial space is reduced. Moreover, a reset mechanism is constructed by using the guide rod, the C1 guide sleeve, the C1 release spring, the C2 guide sleeve and the C2 release spring, and the application of the pull rod is used to achieve the stable separation and engagement of the C1 clutch and the C2 clutch. It has a very good burst speed, can stably complete the engagement and separation of the clutch at a high speed, and better meet the application requirements of the dual clutch of pure electric vehicles.

Description

Technical Field

[0001] The present application relates to the technical field of automobile transmission systems, and in particular to a two-speed dry dual clutch for a pure electric vehicle. Background Art

[0002] The automotive dual clutch is a dual clutch automatic transmission (DCT), which usually has two clutch systems. Under the control of the automatic transmission control unit (TCU), the two clutches are separated and combined respectively. During the shifting process, one clutch is in the engaged state and the other clutch is in the waiting state. The two clutches complete the shifting alternately, and uninterrupted power shifting is achieved in actual operation. Among them, the dry dual clutch is different from the wet clutch. A large part of the dry dual clutch is formed by the reasonable layout of two friction clutches in the form of traditional clutches. It inherits the advantages of high transmission efficiency, compact installation space and light weight of the manual clutch. Compared with the wet clutch, the structure of the dry dual clutch is much simpler.

[0003] For electric vehicles, especially pure electric vehicles, the torque output of the motor is very stable, and the shifting impact on the transmission system is much smaller than that of internal combustion engines. However, the original output speed of the motor is high, while the torque is relatively low, which requires the clutch to have a very good burst speed. Therefore, it is becoming increasingly important to study dual clutches that can better meet this requirement. Summary of the invention

[0004] In view of this, the purpose of this application is to provide a two-speed dry dual clutch for pure electric vehicles, which has a very good burst speed and can stably complete the engagement and disengagement of the clutch at high speed, so as to better meet the dual clutch application requirements of pure electric vehicles.

[0005] In order to achieve the above technical objectives, the present application provides a two-speed dry dual clutch for a pure electric vehicle, comprising a driving plate, a C2 open clutch, an intermediate flywheel and a C1 open clutch; the C1 open clutch comprises a C1 pressure plate, a C1 driven plate, a C1 diaphragm spring and a C1 cover; the C2 open clutch comprises a C2 pressure plate, a C2 driven plate, a C2 diaphragm spring and a C2 cover; the intermediate flywheel is arranged between the C1 driven plate and the C2 driven plate; one end of the C2 disk hub of the C2 driven plate is embedded in the driving disk hub of the driving plate and is coaxially connected to the driving plate, and the other end of the C1 disk hub is embedded in the C1 driven plate and is coaxially connected to the C1 driven plate;

[0006] It also includes a pull rod, a guide rod, a C1 guide sleeve, a C1 release spring, a C2 guide sleeve and a C2 release spring;

[0007] The pull rod member passes through the C2 pressure plate, the intermediate flywheel, the C1 cover, the C1 pressure plate, the C2 diaphragm spring and the C2 cover in sequence, and its two ends are respectively connected to the C2 pressure plate and the C2 cover;

[0008] The guide rod passes through the drive plate, the C2 pressure plate, the intermediate flywheel, the C1 pressure plate and the C1 cover in sequence, and its two ends are respectively connected to the drive plate and the C1 cover;

[0009] The C1 guide sleeve is sleeved on the guide rod, and one end of the C1 guide sleeve passes through the C1 pressure plate to contact and abut against the C1 cover, and the other end of the C1 guide sleeve contacts and abuts against the intermediate flywheel;

[0010] The C1 separation spring is sleeved on the C1 guide sleeve, and one end of the spring contacts and abuts against the C1 pressure plate, and the other end of the spring contacts and abuts against the intermediate flywheel;

[0011] The C2 guide sleeve is sleeved on the guide rod, and one end of the C2 guide sleeve passes through the C2 pressure plate to contact and abut against the driving plate, and the other end of the C2 guide sleeve contacts and abuts against the intermediate flywheel;

[0012] The C2 separation spring sleeve is arranged on the C2 guide sleeve, and one end is in contact with and abuts against the C2 pressure plate, and the other end is in contact with and abuts against the intermediate flywheel.

[0013] Furthermore, the outer peripheries of the C1 pressure plate and the C2 pressure plate are punched with mounting holes for the pull rod member and the guide rod member to pass through respectively.

[0014] Furthermore, a plurality of bent portions for supporting the C1 diaphragm spring are provided on the inner periphery of the C1 pressure plate.

[0015] Further, it also includes positioning rivets;

[0016] The positioning rivet is installed in the installation cavity of the C1 diaphragm spring and is used to position the C1 diaphragm spring.

[0017] Further, the positioning rivet is installed on the C1 cover;

[0018] The positioning rivet is provided with a supporting sheet;

[0019] The support sheet and the C1 cover clamp the C1 diaphragm spring.

[0020] Further, the width of the driving disc hub is greater than the width of the shaft leading bearing;

[0021] A first radial limiting cavity for embedding one end of the C2 driven disk is formed between an end surface of the shaft leading bearing facing the C2 driven disk and an inner wall of the shaft hole of the driving disk.

[0022] Further, the C1 disc hub is provided with an extension portion on one end surface facing the C2 driven disc;

[0023] A second radial limiting cavity is formed in the extension portion for the other end of the C2 hub to be embedded in.

[0024] Further, the tie rod member includes a tie rod bolt and a first nut;

[0025] The rod section of the pull rod bolt passes through the C2 pressure plate, the intermediate flywheel, the C1 cover, the C1 pressure plate, the C2 diaphragm spring and the C2 cover in sequence and is connected to the first nut.

[0026] Further, the guide rod comprises a guide bolt and a second nut;

[0027] The rod section of the guide bolt passes through the drive plate, the C2 pressure plate, the intermediate flywheel, the C1 pressure plate and the C1 cover in sequence and is connected to the second nut.

[0028] Furthermore, a spring washer is provided between the C1 separation spring and the intermediate flywheel, and between the C2 separation spring and the intermediate flywheel.

[0029] It can be seen from the above technical solutions that the two ends of the disk hub of the C2 driven disk of the present application are respectively embedded with the disk hub of the driving disk and the disk hub of the C1 driven disk, which solves the problem that the two driven disks of the open dual clutch cannot be centered without the main shaft inserted, while saving the design requirements of the intermediate positioning bearing and reducing the axial space. In addition, a reset mechanism is constructed using a guide rod, a C1 guide sleeve, a C1 release spring, a C2 guide sleeve and a C2 release spring, and the use of a pull rod is used to achieve stable separation and engagement of the C1 clutch and the C2 clutch. It has a very good burst speed, can stably complete the engagement and separation of the clutch at a high speed, and better meet the dual-clutch application requirements of pure electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 A first cross-sectional view of a two-speed dry dual clutch for a pure electric vehicle provided in the present application;

[0032] Figure 2A second cross-sectional view of a two-speed dry dual clutch for a pure electric vehicle provided in the present application;

[0033] Figure 3 This is a schematic diagram of the C1 pressure plate structure of a two-speed dry dual clutch for a pure electric vehicle provided in this application;

[0034] Figure 4 This is a schematic structural diagram of a support plate of a two-speed dry dual clutch for a pure electric vehicle provided in this application;

[0035] Figure 5 A schematic diagram of the matching structure of a guide rod, a C1 guide sleeve, a C1 release spring, a C2 guide sleeve and a C2 release spring of a two-speed dry dual clutch for a pure electric vehicle provided in the present application;

[0036] In the figure: 1, C2 cover; 2, C2 diaphragm spring; 3, C1 cover; 4, C1 diaphragm spring; 5, C1 pressure plate; 51, mounting hole; 52, bending part; 6, fastening bolt; 7, intermediate flywheel; 8, driving plate; 81, driving plate hub; 9, C2 pressure plate; 10, C1 driven plate; 101, C1 plate hub; 11, shaft leading bearing; 12, driving shaft; 13, C2 driven plate; 131, C2 plate hub; 14, locating pin; 15, first nut; 16, diaphragm spring gasket; 17, pull rod bolt; 18, guide bolt; 19, C2 guide sleeve; 20, C2 release spring; 21, spring gasket; 22, C1 release spring; 23, C1 guide sleeve; 24, supporting plate; 241, connecting part; 242, clamping part; 25, locating rivet; 26, second nut. DETAILED DESCRIPTION

[0037] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0038] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] The embodiment of the present application discloses a two-speed dry dual clutch for a pure electric vehicle.

[0041] See also Figure 1 , Figure 2 as well as Figure 5 An embodiment of a two-speed dry dual clutch for a pure electric vehicle provided in the embodiments of the present application includes:

[0042] The drive plate 8, C2 open clutch, intermediate flywheel 7 and C1 open clutch; the C1 open clutch includes C1 pressure plate 5, C1 driven plate 10, C1 diaphragm spring 4 and C1 cover 3; the C2 open clutch includes C2 pressure plate 9, C2 driven plate 13, C2 diaphragm spring 2 and C2 cover 1; the intermediate flywheel 7 is arranged between C1 driven plate 10 and C2 driven plate 13; one end of C2 disc hub 131 of C2 driven plate 13 is embedded in the drive disc hub 81 of drive plate 8 and is coaxially connected with drive disc 8, and the other end is embedded in the C1 disc hub 101 of C1 driven plate 10 and is coaxially connected with C1 driven plate 10; it also includes a pull rod, a guide rod, C1 guide sleeve 23, C1 release spring 22, C2 guide sleeve 19 and C2 release spring 20; the pull rod passes through C2 pressure plate 9, intermediate flywheel 7, C1 cover 3, C1 pressure plate 5, C2 driven plate 13 in sequence. 2 diaphragm spring 2 and C2 cover 1, and the two ends are connected to C2 pressure plate 9 and C2 cover 1 respectively; the guide rod passes through the driving plate 8, C2 pressure plate 9, intermediate flywheel 7, C1 pressure plate 5 and C1 cover 3 in sequence, and the two ends are connected to the driving plate 8 and C1 cover 3 respectively; the C1 guide sleeve 23 is sleeved on the guide rod, and one end passes through the C1 pressure plate 5 to contact and abut against the C1 cover 3, and the other end contacts and abuts against the intermediate flywheel 7; the C1 release spring 22 is sleeved on the C1 guide sleeve 23, and one end contacts and abuts against the C1 pressure plate 5, and the other end contacts and abuts against the intermediate flywheel 7; the C2 guide sleeve 19 is sleeved on the guide rod, and one end passes through the C2 pressure plate 9 to contact and abut against the driving plate 8, and the other end contacts and abuts against the intermediate flywheel 7; the C2 release spring 20 is sleeved on the C2 guide sleeve 19, and one end contacts and abuts against the C2 pressure plate 9, and the other end contacts and abuts against the intermediate flywheel 7.

[0043] Specifically, in order to solve the problem of better completing the engagement and disengagement of the clutch at high motor speed, the present application adopts a design in which the driven plate and the pressure plate are normally open, that is, the C1 clutch and the C2 clutch are both normally open clutches. In the normally open state, the driven plate and the pressure plate are separated, and when the relative clutch needs to transmit torque, the driven plate and the pressure plate are engaged. However, the double normally open dry dual clutch usually has one / two driven plates that slide randomly inside the clutch because there is no centering device. This problem will be very obvious before installing it into the first and second shafts of the gearbox, and because the dry dual clutch is installed on the side when the vehicle manufacturer installs it, this increases the difficulty of installing the input shaft of the gearbox. In order to better meet the requirements of the normally open dual clutch and improve the convenience of installation, the two ends of the disk hub of the C2 driven disk 13 in this embodiment are respectively embedded with the disk hub of the driving disk 8 and the disk hub of the C1 driven disk 10 to achieve mutual radial limitation, which solves the problem that the two driven disks of the open dual clutch cannot be centered without the main shaft inserted, and at the same time saves the design requirements of the intermediate positioning bearing and reduces the axial space. In addition, a reset mechanism is constructed by using a guide rod, a C1 guide sleeve 23, a C1 separation spring 22, a C2 guide sleeve 19 and a C2 separation spring 20, and the application of the pull rod is used to achieve the stable separation and engagement of the C1 clutch and the C2 clutch, wherein the reset mechanism is used for the separation and reset of the C1 driven disk 10 and the C1 pressure plate 5 / the C2 driven disk 13 and the C2 pressure plate 9, respectively, and the pull rod can be used to pull the C2 pressure plate 9 to make the C2 pressure plate 9 engage with the C2 driven disk 13. The C2 diaphragm spring 2 is arranged between the C1 cover 3 and the C2 cover 1. When the hydraulic actuator applies force to the finger end of the C2 diaphragm spring 2, the C2 diaphragm spring 2 pries the C1 cover 3 in the opposite direction due to the lever effect, and the C1 cover 3 moves outward. Since the C1 cover 3 is connected to the tie rod, the tie rod can be pulled. The overall blasting speed is very good, and the clutch engagement and separation can be stably completed at high speeds, which better meets the dual-clutch application requirements of pure electric vehicles.

[0044] like Figure 1 as well as Figure 2As shown, the dry dual clutch in the present application also specifically has components such as a drive shaft 12, a shaft guide bearing 11, a fastening bolt 6, and a positioning pin 14; wherein the shaft guide bearing 11 is embedded in the drive disc hub 81, the drive shaft 12 is coaxially connected to the drive disc 8, the fastening bolt 6 is used to realize the connection between the intermediate flywheel 7 and the C1 cover 3 to fasten the C1 cover 3, and the positioning pin 14 is used to realize the connection between the drive disc 8, the intermediate flywheel 7 and the C1 cover 3, and is used to position the intermediate flywheel 7. The intermediate flywheel 7 is connected to the drive disc 8, and finally connected to the drive shaft 12, directly connected to the motor output torque, and synchronized with the motor speed. In addition, in order to reduce the extrusion wear of the end of the pull rod on the C2 diaphragm spring 2 and to better position the C2 diaphragm spring 2, a diaphragm spring gasket 2116 can be sleeved on the pull rod, so that the end of the pull rod contacts and abuts against the C2 diaphragm spring 2 through the diaphragm spring gasket 2116. Of course, there are also unexplained assembly and positional relationships between the various components, etc., which can be found in the attached drawings provided in this application. Figure 1 And attached Figure 2 It is implemented by combining with the dry dual clutch technology in the art, and is not the focus of improvement of this application, so no further elaboration will be given.

[0045] Specific working principle: When the electric vehicle starts, the transmission control module applies pressure to the C1 diaphragm spring 4 through the hydraulic actuator in advance. The finger end of the C1 diaphragm spring 4 is stressed, and the friction surface of the C1 pressure plate 5 is pressed toward the C1 driven plate 10. And it is close to the friction plate of the C1 driven plate 10. Before the electric vehicle starts, the C1 open clutch is engaged, and then the motor outputs power and the car starts to drive. In the starting stage, the C1 open clutch does not generate sliding friction.

[0046] When the vehicle speed reaches the preset speed, the clutch will start to shift up. During the shift up phase, the transmission control module will remove the force acting on the C1 diaphragm spring 4 through the hydraulic actuator, and the C1 pressure plate 5 will complete the separation of the pressure plate and the C1 driven plate 10 under the elastic force of the C1 separation spring 22; at the same time, the hydraulic actuator applies force to the finger tip of the C2 diaphragm spring 2, and the C2 diaphragm spring 2 pries the C1 cover 3 in the opposite direction due to the lever effect, and the C1 cover 3 moves outward, pulling the tie rod to finally press the C2 pressure plate 9 against the rotating C2 driven plate 13, and the C2 pressure plate 9 is completely engaged with the C2 driven plate 13, and the speeds of the two are synchronized. The C2 pressure plate 9 transmits the motor torque to the C2 driven plate 13, and finally completes the movement synchronization of the motor and the C2 driven plate 13. During this period, the C2 pressure plate 9 and the C2 driven plate 13 are engaged at different speeds, which will generate sliding friction and heat.

[0047] When downshifting, the working principle of the clutch is basically the same as when upshifting, so the details will not be repeated here.

[0048] The above is a first embodiment of a two-speed dry dual clutch for a pure electric vehicle provided in the embodiment of the present application. The following is a second embodiment of a two-speed dry dual clutch for a pure electric vehicle provided in the embodiment of the present application. For details, please refer to Figures 1 to 5 .

[0049] A two-speed dry dual clutch for a pure electric vehicle, comprising a driving disc 8, a C2 open clutch, an intermediate flywheel 7 and a C1 open clutch; the C1 open clutch comprises a C1 pressure plate 5, a C1 driven disc 10, a C1 diaphragm spring 4 and a C1 cover 3; the C2 open clutch comprises a C2 pressure plate 9, a C2 driven disc 13, a C2 diaphragm spring 2 and a C2 cover 1; the intermediate flywheel 7 is arranged between the C1 driven disc 10 and the C2 driven disc 13; one end of the C2 disc hub 131 of the C2 driven disc 13 is embedded in the driving disc hub 81 of the driving disc 8 and is coaxially connected to the driving disc 8, and the other end is embedded in the C1 disc hub 101 of the C1 driven disc 10 and is coaxially connected to the C1 driven disc 10; it also comprises a pull rod, a guide rod, a C1 guide sleeve 23, a C1 release spring 22, a C2 guide sleeve 19 and a C2 release spring 20; the pull rod passes through the C2 pressure plate 9, the intermediate flywheel 7, the C1 cover in sequence 3, C1 pressure plate 5, C2 diaphragm spring 2 and C2 cover 1, and the two ends are connected to C2 pressure plate 9 and C2 cover 1 respectively; the guide rod passes through the drive plate 8, C2 pressure plate 9, intermediate flywheel 7, C1 pressure plate 5 and C1 cover 3 in sequence, and the two ends are connected to the drive plate 8 and C1 cover 3 respectively; the C1 guide sleeve 23 is sleeved on the guide rod, and one end passes through the C1 pressure plate 5 to contact and abut against the C1 cover 3, and the other end contacts and abuts against the intermediate flywheel 7; the C1 release spring 22 is sleeved on the C1 guide sleeve 23, and one end contacts and abuts against the C1 pressure plate 5, and the other end contacts and abuts against the intermediate flywheel 7; the C2 guide sleeve 19 is sleeved on the guide rod, and one end passes through the C2 pressure plate 9 to contact and abut against the drive plate 8, and the other end contacts and abuts against the intermediate flywheel 7; the C2 release spring 20 is sleeved on the C2 guide sleeve 19, and one end contacts and abuts against the C2 pressure plate 9, and the other end contacts and abuts against the intermediate flywheel 7.

[0050] Furthermore, if Figures 1 to 3 As shown, in order to meet the requirement of small overall weight and reduce inertia, in this embodiment, the outer periphery of the C1 pressure plate 5 and the C2 pressure plate 9 are punched with mounting holes 51 for the pull rod and the guide rod to pass through respectively. The C1 and C2 pressure plates 9 can be stamped from steel plates.

[0051] Furthermore, if Figure 3 As shown, in order to better support the C1 diaphragm spring 4, the inner circumference of the C1 pressure plate 5 can be provided with a plurality of bending portions 52 for supporting the C1 diaphragm spring 4, which are processed by a bending method and are not specifically limited.

[0052] Furthermore, if Figure 1 as well as Figure 4As shown, since the double-open clutch design is adopted in the present application, the pressure plate and the driven plate are disengaged when not working. Taking the C1 open clutch as an example, when the fingertip of the C1 diaphragm spring 4 is subjected to force, the C1 diaphragm spring 4 will press the entire C1 diaphragm spring 4 and the C1 pressure plate 5 downward, resulting in a larger gap. Therefore, in order to solve this problem, the present embodiment also includes a positioning rivet 25; the positioning rivet 25 is installed in the installation cavity for installing the C1 diaphragm spring 4, and is used to position the C1 diaphragm spring 4. The positioning rivet 25 is installed on the C1 cover 3; a support sheet 24 is provided on the positioning rivet 25; the support sheet 24 and the C1 cover 3 form a clamp for the C1 diaphragm spring 4. The structure of the support sheet 24 can be as follows Figure 4 The figure shows a connecting portion 241 for connecting with the positioning rivet 25 and a clamping portion 242 for clamping and fixing the C1 diaphragm spring 4. The positioning rivet 25 in this embodiment can also be replaced by other pins. Those skilled in the art can make certain improvements to the C2 open clutch based on this to overcome the gap problem, and there is no specific limitation.

[0053] Furthermore, in order to meet the interlocking fit between the driving hub 81 and the C1 hub 101, the width of the driving hub 81 can be greater than the width of the shaft leading bearing 11; a first radial limit cavity for embedding one end of the C2 driven disk 13 is formed between one end surface of the shaft leading bearing 11 facing the C2 driven disk 13 and the inner wall of the shaft hole of the driving disk 8. Similarly, the C1 hub 101 is provided with an extension on one end surface of the C2 driven disk 13; a second radial limit cavity for embedding the other end of the C2 hub 131 is formed in the extension. Those skilled in the art can make appropriate changes based on this, and there is no specific limitation.

[0054] Furthermore, the tie rod may include a tie rod bolt 17 and a first nut 15; the rod section of the tie rod bolt 17 passes through the C2 pressure plate 9, the intermediate flywheel 7, the C1 cover 3, the C1 pressure plate 5, the C2 diaphragm spring 2 and the C2 cover 1 in sequence and is connected to the first nut 15. Similarly, the guide rod may include a guide bolt 18 and a second nut 26; the rod section of the guide bolt 18 passes through the drive plate 8, the C2 pressure plate 9, the intermediate flywheel 7, the C1 pressure plate 5 and the C1 cover 3 in sequence and is connected to the second nut 26. Of course, the tie rod may also include a stud and two first nuts 15, and similarly, the guide rod may also include a stud and two second nuts 26, without specific limitation.

[0055] Furthermore, in order to improve the connection stability of the springs and reduce contact wear, spring washers 21 may be provided between the C1 separation spring 22 and the intermediate flywheel 7 and between the C2 separation spring 20 and the intermediate flywheel 7 .

[0056] The above is a detailed introduction to a two-speed dry dual clutch for a pure electric vehicle provided in the present application. For a person skilled in the art, according to the idea of ​​the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A two-speed dry dual clutch for a pure electric vehicle, comprising a drive plate, a C2 open clutch, an intermediate flywheel and a C1 open clutch; the C1 open clutch comprises a C1 pressure plate, a C1 driven plate, a C1 diaphragm spring and a C1 cover; the C2 open clutch comprises a C2 pressure plate, a C2 driven plate, a C2 diaphragm spring and a C2 cover; the intermediate flywheel is arranged between the C1 driven plate and the C2 driven plate; characterized in that, One end of the C2 disk hub of the C2 driven disk is embedded in the driving disk hub of the driving disk and is coaxially connected to the driving disk, and the other end is embedded in the C1 disk hub of the C1 driven disk and is coaxially connected to the C1 driven disk; It also includes a pull rod, a guide rod, a C1 guide sleeve, a C1 release spring, a C2 guide sleeve and a C2 release spring; The pull rod member passes through the C2 pressure plate, the intermediate flywheel, the C1 cover, the C1 pressure plate, the C2 diaphragm spring and the C2 cover in sequence, and its two ends are respectively connected to the C2 pressure plate and the C2 cover; The guide rod passes through the drive plate, the C2 pressure plate, the intermediate flywheel, the C1 pressure plate and the C1 cover in sequence, and its two ends are respectively connected to the drive plate and the C1 cover; The C1 guide sleeve is sleeved on the guide rod, and one end of the C1 guide sleeve passes through the C1 pressure plate to contact and abut against the C1 cover, and the other end of the C1 guide sleeve contacts and abuts against the intermediate flywheel; The C1 separation spring is sleeved on the C1 guide sleeve, and one end of the spring contacts and abuts against the C1 pressure plate, and the other end of the spring contacts and abuts against the intermediate flywheel; The C2 guide sleeve is sleeved on the guide rod, and one end of the C2 guide sleeve passes through the C2 pressure plate to contact and abut against the driving plate, and the other end of the C2 guide sleeve contacts and abuts against the intermediate flywheel; The C2 separation spring is sleeved on the C2 guide sleeve, and one end of the spring contacts and abuts against the C2 pressure plate, and the other end of the spring contacts and abuts against the intermediate flywheel; The outer peripheries of the C1 pressure plate and the C2 pressure plate are punched with mounting holes for the pull rod and the guide rod to pass through respectively; The inner periphery of the C1 pressure plate is provided with a plurality of bent portions for supporting the C1 diaphragm spring; Also included are positioning rivets; The positioning rivet is installed in the installation cavity of the C1 diaphragm spring and is used to position the C1 diaphragm spring.

2. A two-speed dry dual clutch for a pure electric vehicle according to claim 1, characterized in that: The positioning rivet is installed on the C1 cover; The positioning rivet is provided with a supporting sheet; The support sheet and the C1 cover clamp the C1 diaphragm spring.

3. A two-speed dry dual clutch for a pure electric vehicle according to claim 1, characterized in that: The width of the driving disc hub is greater than the width of the shaft front guide bearing; A first radial limiting cavity for embedding one end of the C2 driven disk is formed between an end surface of the shaft leading bearing facing the C2 driven disk and an inner wall of the shaft hole of the driving disk.

4. A two-speed dry dual clutch for a pure electric vehicle according to claim 1, characterized in that: The C1 disc hub is provided with an extension portion on one end surface facing the C2 driven disc; A second radial limiting cavity is formed in the extension portion for the other end of the C2 hub to be embedded in.

5. A two-speed dry dual clutch for a pure electric vehicle according to claim 1, characterized in that: The tie rod member includes a tie rod bolt and a first nut; The rod section of the pull rod bolt passes through the C2 pressure plate, the intermediate flywheel, the C1 cover, the C1 pressure plate, the C2 diaphragm spring and the C2 cover in sequence and is connected to the first nut.

6. A two-speed dry dual clutch for a pure electric vehicle according to claim 1, characterized in that: The guide rod comprises a guide bolt and a second nut; The rod section of the guide bolt passes through the drive plate, the C2 pressure plate, the intermediate flywheel, the C1 pressure plate and the C1 cover in sequence and is connected to the second nut.

7. A two-speed dry dual clutch for a pure electric vehicle according to claim 1, characterized in that: Spring washers are provided between the C1 release spring and the intermediate flywheel, and between the C2 release spring and the intermediate flywheel.

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