Automatic control device of dry clutch and hybrid vehicle

Abstract

The present application discloses an automatic control device for a dry clutch and a hybrid electric vehicle. The automatic control device includes: an electric mechanism, a deceleration swing mechanism, a damping transmission mechanism, a clutch fork assembly and a clutch actuator; the electric mechanism drives the deceleration swing mechanism to reciprocate within a preset angle, and the deceleration swing mechanism pulls the clutch fork assembly to swing through the damping transmission mechanism. One end of the clutch fork assembly is connected to the damping transmission mechanism, and the other end is pivotally connected to the outer wall, and a clutch actuator is arranged in the middle. The automatic control device of the present invention can realize self-learning adjustment through the whole vehicle control algorithm, which can effectively prevent the deviation caused by frequent operation and wear of the automatic control device. The damping transmission mechanism can eliminate vibrations in all directions when the clutch is in action, thereby protecting the components from vibration damage.

Description

Technical Field

[0001] The present application relates to the technical field of automobile clutch control, and in particular to an automatic control device for a dry clutch and a hybrid electric vehicle. Background Art

[0002] Dry clutch has the advantages of simple structure, complete separation and high reliability, so it is widely used in traditional automobile gear shifting. When the gear shifting operation needs to be performed, the actuator applies force to the clutch fork assembly, and then acts on the release bearing seat to separate the engine from the transmission. In hybrid vehicles, the engine and ISG motor need to be combined at startup, and separation and combination switching can be achieved under other different working conditions.

[0003] In the prior art, the transmission mechanism is mostly an air pump push rod or a motor push rod. For automobile layouts without an air source and with a small installation space, a simple, efficient and reliable clutch actuator is needed. Due to the rotation of the ISG motor shaft and the engine crankshaft, when the clutch push rod and the clutch fork assembly are in motion, vibrations in all directions of space will be generated, causing the clutch push rod to resonate and shortening its lifespan, so it is necessary to overcome these vibrations and displacements. At the moment when the release bearing is engaged and separated, the jerking vibration generated is strong, and a buffer mechanism is required to absorb and resolve it. Due to the long-term operation of the release bearing, the clutch will be worn and displaced, causing the initial position of the clutch fork assembly and the push rod cable to change. If no calibration is performed, the clutch will not be fully engaged or disconnected, which will not only damage the engine and ISG motor structure, but also pose a safety hazard. Summary of the invention

[0004] In view of the above problems, the present application proposes an automatic control device for a dry clutch and a hybrid vehicle to solve or partially solve the above problems.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] On the one hand, the present invention provides an automatic control device for a dry clutch, the automatic control device comprising: an electric mechanism, a deceleration swing mechanism, a damping transmission mechanism, a clutch fork assembly and a clutch actuator;

[0007] The electric mechanism drives the deceleration swing mechanism to reciprocate within a preset angle, and the deceleration swing mechanism pulls the clutch fork assembly to swing through the damping transmission mechanism. One end of the clutch fork assembly is connected to the damping transmission mechanism, and the other end is pivotally connected to the outer wall, and a clutch actuator is arranged in the middle part.

[0008] Furthermore, the electric mechanism includes a motor controller and a stepper motor, and the motor controller controls the rotation of the stepper motor.

[0009] Furthermore, the deceleration swing mechanism includes a worm and a worm wheel, the worm is fixedly connected to the output shaft of the electric mechanism, a cavity structure is provided on the front side of the lower part of the worm wheel, a connecting shaft is provided in the middle lower part of the cavity structure, and the worm wheel swings around the connecting shaft.

[0010] Further, the damping transmission mechanism comprises: a rocker arm, a damping device and a traction wire;

[0011] The rocker arm is arranged in the cavity structure, the lower end of the rocker arm is connected to the connecting shaft, and the rocker arm can swing around the connecting shaft;

[0012] One end of the damping device is fixedly connected to the middle of the rocker arm, and the other end is connected to the cavity structure, so that the rocker arm and the cavity structure swing together;

[0013] The upper end of the rocker arm is connected to one end of the clutch fork assembly through the traction wire.

[0014] Furthermore, the cavity structure forms a rectangular trough body, a front wall of the rectangular trough body is formed with a V-shaped groove, and the V-shaped groove forms a limit for the rocker arm.

[0015] Furthermore, the damping device is a damping spring, and the traction wire is a nylon wire.

[0016] Furthermore, there are two damping devices, which are symmetrically arranged on both sides of the rocker arm.

[0017] Furthermore, the clutch actuator is a clutch bearing seat, and the clutch bearing seat is sleeved on the clutch fork assembly.

[0018] Furthermore, the electric mechanism drives the damping transmission mechanism and the clutch fork assembly to be in a reasonable position, thereby realizing self-learning calibration of the automatic control device.

[0019] On the other hand, the present invention also proposes a hybrid vehicle, which includes an engine and an ISG motor. The hybrid vehicle also includes an automatic control device as described in any of the above items, which is used to realize automatic control of the separation or combination of the clutch between the engine and the ISG motor.

[0020] The automatic control device using the above dry clutch has the following advantages:

[0021] The damping transmission mechanism provided in the automatic control device of the dry clutch provided by the present invention can absorb the vibration transmitted by the release bearing, the fork assembly and the rocker arm, effectively protect the wear of the clutch actuator, and enhance the safety and reliability of the whole vehicle; in one embodiment of the present invention, the automatic control device can realize the self-learning calibration function of the stepper motor adjustment, so that the traction wire is tightened and adjusted to the initial position, effectively ensuring the accuracy of the clutch action and preventing the clutch from being adversely affected by wear and displacement; in one embodiment of the present invention, a traction wire is used to connect the rocker arm and the clutch fork assembly, which can make the clutch operate efficiently and reliably and prevent incomplete clutch separation and engagement caused by jamming.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 A schematic structural diagram of an automatic control device for a dry clutch in one embodiment of the present application is shown;

[0025] Figure 2 A partial structural schematic diagram of a deceleration swing mechanism and a damping transmission mechanism in one embodiment of the present application is shown.

[0026] The meanings of the reference numerals in the figure are as follows: 1. stepper motor, 2. motor controller, 3. worm, 4. worm wheel, 5. connecting shaft, 6. damping device, 7. rocker arm, 8. traction wire drawing, 9. clutch fork assembly, 10. clutch bearing seat. DETAILED DESCRIPTION

[0027] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0028] Example 1

[0029] Embodiment 1 proposes an automatic control device for a dry clutch, such as Figure 1As shown, the automatic control device comprises: an electric mechanism (1, 2), a deceleration swing mechanism (3, 4, 5), a damping transmission mechanism (6, 7, 8), a clutch fork assembly 9 and a clutch actuator 10.

[0030] The electric mechanism drives the deceleration swing mechanism to reciprocate within a preset angle. The deceleration swing mechanism pulls the clutch fork assembly 9 to swing through the damping transmission mechanism. One end of the clutch fork assembly 9 is connected to the damping transmission mechanism, and the other end is pivotally connected to the outer wall. A clutch actuator is arranged in the middle part, and the clutch actuator can be a driving rod, a driving plate, a clamping seat and other components.

[0031] It can be seen that the electric mechanism in this embodiment drives the deceleration swing mechanism to swing, and the deceleration swing mechanism realizes traction on the clutch fork assembly through the damping transmission mechanism, so that the clutch actuator realizes the action of the clutch under the force of the clutch fork assembly, for example, the clutch actuator moves toward the engine shaft end, thereby realizing the separation of the clutch.

[0032] Furthermore, the electric mechanism includes a motor controller 2 and a stepper motor 1, and the motor controller 2 controls the stepper motor 1 to rotate according to a control instruction. After receiving a clutch engagement or separation instruction, the motor controller 2 controls the stepper motor 1 to rotate a corresponding angle, thereby realizing the clutch engagement or separation action, and the motor controller 2 can perform self-learning adjustment by adjusting the rotation of the stepper motor 1 to realize the calibration of the automatic control device.

[0033] Furthermore, the deceleration swing mechanism includes a worm 3 and a worm wheel 4, and the worm 3 is fixedly connected to the output shaft of the electric mechanism, such as Figure 2 As shown, a cavity structure is provided at the front side of the lower part of the worm wheel 4, and a connecting shaft 5 is provided at the middle lower part of the cavity structure, and the worm wheel 4 swings around the connecting shaft 5. When the stepper motor 1 rotates, the worm 3 is driven to rotate, and due to the meshing between the worm 3 and the worm wheel 4, the worm wheel 4 swings within a certain range as the worm 3 rotates, and then drives the cavity structure at the lower part of the worm wheel 4 to swing.

[0034] Furthermore, the damping transmission mechanism includes: a damping device 6 , a rocker arm 7 and a traction wire 8 .

[0035] like Figure 2 As shown, the rocker arm 7 is arranged in the cavity structure, the lower end of the rocker arm 7 is connected to the connecting shaft 5, and the rocker arm 7 can swing around the connecting shaft 5.

[0036] One end of the damping device 6 is fixedly connected to the middle of the rocker arm 7, and the other end is connected to the cavity structure, so that the rocker arm 7 and the cavity structure swing together; the rocker arm 7 generates force with the cavity structure through the damping device 6. When the cavity structure swings around the connecting shaft 5, the damping device 6 drives the rocker arm 7 to swing along. The damping device 6 can effectively absorb the vibration transmitted by the cavity structure or the rocker arm 7.

[0037] The upper end of the rocker arm 7 is connected to one end of the clutch fork assembly 9 through a traction wire 8.

[0038] In the present invention, the traction wire 8 is used to replace the push rod. When the traction wire 8 is subjected to resonance, it can effectively resolve vibrations in all directions, and will not cause jamming, so that the clutch can operate efficiently and reliably, and prevent the clutch from being separated and connected incompletely due to jamming. The traction wire 8 can attenuate the force generated by the vibration, thereby protecting the worm wheel 4 and the worm 3 from vibration damage. At the same time, the damping device 6 can absorb the vibration transmitted by the clutch fork assembly 9 and the rocker arm 7, effectively resolve the setback vibration generated by the clutch at the moment of separation and connection, and avoid rigid collision and friction of the rocker arm 7.

[0039] Furthermore, if Figure 2 As shown, a rectangular plate is provided at the lower end of the worm wheel 4, and the cavity structure on the front side of the rectangular plate forms a rectangular groove body, and a V-shaped groove is formed on the front wall of the rectangular groove. The V-shaped groove forms a limit for the rocker arm 7 to prevent the rocker arm from swinging excessively.

[0040] Preferably, the damping device 6 is a damping spring, and the traction wire 8 is a nylon wire. The damping device 6 is not limited to a damping spring, but may also be other devices with a damping effect, and the traction wire 8 may also be other wires with the same effect.

[0041] Furthermore, there are two damping devices 6 symmetrically arranged on both sides of the rocker arm 7. Of course, the number of damping devices 6 may also be other numbers.

[0042] Furthermore, the clutch actuator is a clutch bearing seat 10, and the clutch bearing seat 10 is sleeved in the middle position of the clutch fork assembly 9. When the clutch fork assembly 9 is actuated, the clutch bearing seat 10 will perform corresponding actions, thereby causing the clutch to engage or disengage.

[0043] Furthermore, the electric mechanism drives the damping transmission mechanism and the clutch fork assembly 9 to be in a reasonable position, thereby realizing the self-learning calibration of the automatic control device.

[0044] When the vehicle controller sends a clutch disengagement or engagement command, the motor controller 2 first controls the stepper motor 1 to perform self-learning calibration. The entire calibration process will drive the worm 4 to rotate through the worm 3, and the rocker arm 7 pulls the traction wire 8 to make it in a taut state to complete the self-learning calibration. The vehicle controller sends a self-learning calibration command every time the automatic control device is activated or regularly to avoid deviations caused by frequent operation and wear.

[0045] After receiving the clutch disengagement command, the automatic control device of the present invention controls the stepper motor 1 to rotate by the motor controller 2, thereby driving the worm 3 to rotate. Since the worm 3 and the worm wheel 4 are meshing, the worm wheel 4 swings. The worm wheel 4 drives the rocker arm 7 to swing through the damping device 6. The rocker arm 7 pulls the traction wire 8. Under its action force, the clutch fork assembly 9 presses the release bearing seat 10 to move toward the engine shaft end, thereby realizing the separation of the clutch.

[0046] In addition, due to the rotation of the engine shaft and the ISG motor shaft, vibrations will be generated in all directions. The vibrations will be transmitted to the traction wire 8 along the release bearing seat 10 and the clutch fork assembly 9. The traction wire 8 itself can attenuate the force during the vibration, thereby protecting the worm wheel 4 and the worm 3 from vibration damage.

[0047] Furthermore, when the clutch is actuated, the release bearing seat 10 will generate large vibrations at both the initial position and the final position, causing the entire system to jerk. At this time, the damping device 6 can effectively alleviate the jerk vibration, allowing the rocker arm 7 to swing left and right to avoid rigid collision and friction.

[0048] Example 2

[0049] Embodiment 2 discloses a hybrid vehicle, which includes an engine and an ISG motor. The hybrid vehicle also includes any of the automatic control devices described above, which is used to realize automatic control of the separation or combination of the clutch between the engine and the ISG motor.

[0050] In summary, the technical solution of the present application discloses an automatic control device for a dry clutch and a hybrid electric vehicle, the automatic control device comprising: an electric mechanism, a deceleration swing mechanism, a damping transmission mechanism, a clutch fork assembly and a clutch actuator; the electric mechanism drives the deceleration swing mechanism to reciprocate within a preset angle, the deceleration swing mechanism pulls the clutch fork assembly to swing through the damping transmission mechanism, one end of the clutch fork assembly is connected to the damping transmission mechanism, the other end is pivotally connected to the outer wall, and a clutch actuator is arranged in the middle. The automatic control device of the present invention can realize self-learning adjustment through the vehicle control algorithm, which can effectively prevent the deviation caused by frequent operation and wear of the automatic control device, and the damping transmission mechanism can eliminate vibrations in all directions when the clutch is in action, thereby protecting the components from vibration damage.

[0051] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes, replacements or improvements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0052] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

Claims

1. An automatic control device for a dry clutch, characterized in that: The automatic control device comprises: an electric mechanism, a deceleration swing mechanism, a damping transmission mechanism, a clutch fork assembly and a clutch actuator; The electric mechanism drives the deceleration swing mechanism to reciprocate within a preset angle, and the deceleration swing mechanism pulls the clutch fork assembly to swing through the damping transmission mechanism. One end of the clutch fork assembly is connected to the damping transmission mechanism, and the other end is pivotally connected to the outer wall. A clutch actuator is arranged in the middle part. The electric mechanism includes a motor controller and a stepper motor, and the motor controller controls the rotation of the stepper motor. The deceleration swing mechanism comprises a worm and a worm wheel, wherein the worm is fixedly connected to the output shaft of the electric mechanism, a cavity structure is arranged at the front side of the lower part of the worm wheel, a connecting shaft is arranged at the middle lower part of the cavity structure, and the worm wheel swings around the connecting shaft; The damping transmission mechanism comprises: a rocker arm, a damping device and a traction wire; The rocker arm is arranged in the cavity structure, the lower end of the rocker arm is connected to the connecting shaft, and the rocker arm can swing around the connecting shaft; One end of the damping device is fixedly connected to the middle of the rocker arm, and the other end is connected to the cavity structure, so that the rocker arm and the cavity structure swing together; The upper end of the rocker arm is connected to one end of the clutch fork assembly through the traction wire.

2. The automatic control device according to claim 1, characterized in that: The cavity structure forms a rectangular trough body, a front wall of the rectangular trough body is formed with a V-shaped groove, and the V-shaped groove forms a limit for the rocker arm.

3. The automatic control device according to claim 1, characterized in that: The damping device is a damping spring, and the traction wire is a nylon wire.

4. The automatic control device according to claim 1, characterized in that: There are two damping devices, which are symmetrically arranged on both sides of the rocker arm.

5. The automatic control device according to claim 1, characterized in that: The clutch actuator is a clutch bearing seat, and the clutch bearing seat is sleeved on the clutch fork assembly.

6. The automatic control device according to claim 1, characterized in that: The electric mechanism drives the damping transmission mechanism and the clutch fork assembly to be in a reasonable position, thereby realizing the self-learning calibration of the automatic control device.

7. A hybrid vehicle, comprising an engine and an ISG motor, characterized in that: The hybrid vehicle also includes an automatic control device as described in any one of claims 1 to 6, which is used to realize automatic control of the separation or combination of the clutch between the engine and the ISG motor.

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