DHT hybrid power coupling mechanism

Abstract

The utility model discloses a DHT hybrid power coupling mechanism, which belongs to the technical field of clutches and comprises a clutch outer hub, a clutch inner hub, an input belt wheel shaft and an input shaft, the clutch outer hub is of an arc fan-shaped cavity structure with a strip square recess and is in spline connection with the input belt wheel shaft, and the input belt wheel shaft is driven by a driving motor. The clutch inner hub is of an arc fan-shaped cavity structure corresponding to the clutch outer hub and is welded to the input shaft, the input shaft is driven by an engine, a piston is installed in the clutch outer hub, a first spring is installed on one side of the piston, and a thick pressing plate is arranged at the end, away from the first spring, of the clutch outer hub. Friction plates and thin pressing plates are arranged on the sides, close to the piston, of the thick pressing plates in an array By means of the system, switching of the hybrid power mode, the pure electric mode and the pure engine mode of the DHT hybrid power system is achieved, hydraulic energy transmission is achieved through an input shaft oil way, and the active cooling function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a DHT hybrid power coupling mechanism. Background Art

[0002] With the development of technology, higher performance and lower fuel consumption make DHT hybrid systems more and more popular among the public. In common DHT hybrid systems, in order to achieve the switching between pure electric, hybrid and pure engine modes, a power coupling mechanism such as a clutch is usually required to couple and disconnect the power. The power coupling mechanisms matched by common DHT hybrid systems are currently designed based on their own structural system characteristics and cannot be effectively matched with other hybrid systems. Therefore, it is necessary to develop a matching power coupling mechanism based on its own structural characteristics to meet the driving performance and comfort of the hybrid system.

[0003] The existing patent US14207064 discloses a hybrid drive device, including an electric motor, an internal combustion engine, an automatic mechanical transmission, a clutch, a main reducer and a differential, wherein the automatic mechanical transmission includes the first to sixth gears forming a meshing pair, two synchronizers, an input transmission shaft connected to the engine, an input transmission shaft connected to the electric motor and an output transmission shaft. The device provides two gears for the motor and four gears for the engine, which can meet the actual needs of the engine and the motor. Compared with the existing parallel hybrid coupling mechanism, the invention has a simple structure, low cost, good gear shifting comfort and high operating efficiency. The patented technology still has room for improvement.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a DHT hybrid power coupling system, which realizes the switching of hybrid, pure electric and pure engine modes of a DHT hybrid power system, realizes hydraulic energy transmission through the input shaft oil circuit, and has the function of active cooling.

[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0007] A hybrid power coupling mechanism comprises: a clutch outer hub and a clutch inner hub which can cooperate with each other,

[0008] The clutch outer hub is connected to the input pulley shaft, and the clutch inner hub is connected to the input shaft. The clutch outer hub and the clutch inner hub can realize the torque coupling or decoupling of the input pulley shaft and the input shaft. The clutch outer hub is an arc-sector-shaped cavity structure with a long square depression, and the clutch inner hub is an arc-sector-shaped cavity structure corresponding to the clutch outer hub and welded to the input shaft.

[0009] According to an embodiment of the utility model, the clutch outer hub and the clutch inner hub are matched through a plate group snap ring, and the plate group snap ring includes a friction plate and a thin pressure plate that can be separated or contacted. When the pressure provided by the hydraulic system squeezes the piston, the friction plate and the thin pressure plate are pressed together under the pressure of the piston, and the friction plate and the thin pressure plate are in contact.

[0010] According to an embodiment of the utility model, the clutch outer hub has a displaceable piston, and the side of the piston has a first spring capable of limiting the range of movement of the piston. The first spring is used to control the range of movement of the piston, and the first spring is used to reset the piston when the piston is not driven by hydraulic pressure.

[0011] According to an embodiment of the utility model, a retaining ring of the first spring is fixedly mounted on the clutch outer hub, and the retaining ring is designed to limit the position of the first spring and control the deformation space range of the first spring.

[0012] According to an embodiment of the present utility model, the piston can drive the clutch outer hub, the clutch outer hub is connected to a thin pressure plate, and the thin pressure plate can be displaced synchronously with the clutch outer hub.

[0013] According to an embodiment of the utility model, the clutch inner hub is connected with a friction plate, and the friction plate can contact or separate with the thin pressure plate.

[0014] According to an embodiment of the present invention, there are at least two thin pressing plates, which are arranged at intervals.

[0015] According to an embodiment of the present invention, the clutch outer hub has a thick pressure plate that can contact or separate from the friction plate or the thin pressure plate.

[0016] According to an embodiment of the utility model, the clutch outer hub is spline-connected to the outer circle of the thin pressure plate, and the clutch inner hub is spline-connected to the inner circle of the friction plate.

[0017] According to an embodiment of the present invention, the input pulley shaft is driven by a drive motor, and the input shaft is driven by an engine.

[0018] Compared with the prior art, the utility model has the following beneficial effects: through the reasonable design of the clutch piston, the first spring, the friction plate, the thin pressure plate, the thick pressure plate and the snap ring structure, on the one hand, the piston cavity occupies as little space as possible, and the higher oil pressure responsiveness of the coupling mechanism is ensured. The spiral structure design of the first spring realizes the linear relationship between the spring force and the spring stroke, and ensures the control performance of the coupling mechanism. The oil in the clutch piston cavity enters through the oil circuit in the input shaft, and there is no need to develop an independent hydraulic system. In the hydraulic system, part of the hydraulic energy is provided by the electric pump, so that the coupling mechanism has the function of active cooling, and the transmission coupling and disengagement can be completed in the pure electric mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the utility model scheme;

[0021] Figure 2 This is a schematic diagram of the connection scheme between the clutch outer hub and the input pulley shaft of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection scheme between the inner hub and the input shaft of the clutch of the utility model;

[0023] Figure 4 This is a schematic diagram of the plate group clamping ring scheme of the utility model;

[0024] Figure 5 It is a schematic diagram of the connection scheme between the first spring and the piston of the utility model.

[0025] Figure numbers: 1-clutch outer hub; 2-plate group snap ring; 3-thick pressure plate; 4-friction plate; 5-thin pressure plate; 6-first spring; 7-snap ring; 8-piston; 9-input shaft; 10-input pulley shaft; 11-clutch inner hub. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0028] Embodiment 1:

[0029] See attached Figure 1-5 As shown, a DHT hybrid power coupling mechanism comprises: a clutch outer hub 1 and a clutch inner hub 11 which can cooperate with each other,

[0030] The clutch outer hub 1 is connected to the input pulley shaft 10, and the clutch inner hub 11 is connected to the input shaft 9. The cooperation between the clutch outer hub 1 and the clutch inner hub 11 can realize the torque coupling or decoupling of the input pulley shaft 10 and the input shaft 9. The clutch outer hub 1 is an arc-sector-shaped cavity structure with a long square depression, and the clutch inner hub 11 is an arc-sector-shaped cavity structure corresponding to the clutch outer hub 1 and welded to the input shaft 9.

[0031] The clutch outer hub 1 and the clutch inner hub 11 are matched through the plate group snap ring 2, and the plate group snap ring 2 includes a friction plate 4 and a thin pressure plate 5 that can be separated or contacted. When the pressure provided by the hydraulic system squeezes the piston 8, the friction plate 4 and the thin pressure plate 5 are pressed together under the pressure of the piston 8, and the friction plate 4 and the thin pressure plate 5 are in contact. At this time, the torque of the input pulley shaft 10 and the input shaft 9 is coupled.

[0032] The clutch outer hub 1 has a piston 8 that can be displaced. When the piston 8 is displaced, it can squeeze the first spring 6 and the thin pressure plate 5 located at the end of the plate group clamp ring 2. The side of the piston 8 has a first spring 6 that can limit the movement range of the piston 8. The first spring 6 is used to control the movement range of the piston 8, and the first spring 6 is used to reset the piston 8 when the piston 8 is not driven by hydraulic pressure.

[0033] The clutch outer hub 1 is fixed with a retaining ring 7 of the first spring 6. The retaining ring 7 is designed to limit the position of the first spring 6 and control the deformation space range of the first spring 6. The retaining ring 7 cooperates with the plate group retaining ring 2 to combine the friction plate 4 and the thin pressure plate 5 under the pressure of the piston 8.

[0034] The piston 8 can drive the clutch outer hub 1 , and the clutch outer hub 1 is connected with a thin pressure plate 5 , and the thin pressure plate 5 can be displaced synchronously with the clutch outer hub 1 .

[0035] The clutch inner hub 11 is connected with a friction plate 4 , which can contact or separate with the thin pressure plate 5 to control the coupling and disengagement of the torque between the input pulley shaft 10 and the input shaft 9 .

[0036] There are at least two thin pressure plates 5 , which are square thin plate structures and are arranged at intervals from the friction plate 4 .

[0037] The clutch outer hub 1 has a thick pressure plate 3 that can contact or separate with the friction plate 4 or the thin pressure plate 5. The thick pressure plate 3 is a square thick plate used to limit the combination range of the friction plate 4 and the thin pressure plate 5.

[0038] The clutch outer hub 1 is connected to the thin pressure plate 5 by external cylindrical splines, and the clutch inner hub 11 is connected to the friction plate 4 by internal cylindrical splines.

[0039] The input pulley shaft 10 is driven by the drive motor, and the input shaft 9 is driven by the engine.

[0040] Example 2

[0041] This embodiment is a further improvement on the embodiment 1 as follows: the oil in the clutch piston chamber can enter through the oil path in the input shaft 9, and there is no need to develop an independent hydraulic system.

[0042] In the hydraulic system, part of the hydraulic pressure can be provided by an electric pump, so that the coupling mechanism has the function of active cooling and can complete the coupling and disconnection of the transmission in pure electric mode.

[0043] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the utility model, and are not intended to limit the implementation methods of the technology of the utility model in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the utility model, but they should still be regarded as technologies or embodiments that are essentially the same as the utility model.

[0044] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A DHT hybrid coupling mechanism, comprising: A clutch outer hub (1) and a clutch inner hub (11) that can cooperate with each other, The invention is characterized in that: the clutch outer hub (1) is connected to an input pulley shaft (10), and the clutch inner hub (11) is connected to an input shaft (9), and the cooperation between the clutch outer hub (1) and the clutch inner hub (11) can realize torque coupling or decoupling of the input pulley shaft (10) and the input shaft (9).

2. A DHT hybrid coupling mechanism according to claim 1, characterized in that: The clutch outer hub (1) and the clutch inner hub (11) are matched via a plate group snap ring (2), and the plate group snap ring (2) comprises a friction plate (4) and a thin pressure plate (5) that can be separated or contacted.

3. A DHT hybrid coupling mechanism according to claim 1, characterized in that: The clutch outer hub (1) has a displaceable piston (8), and a first spring (6) is provided on the side of the piston (8) and is capable of limiting the movement range of the piston (8).

4. A DHT hybrid coupling mechanism according to claim 3, characterized in that: The clutch outer hub (1) is fixedly mounted with a snap ring (7) of the first spring (6).

5. A DHT hybrid coupling mechanism according to claim 3, characterized in that: The piston (8) is capable of driving the clutch outer hub (1); the clutch outer hub (1) is connected to a thin pressure plate (5); and the thin pressure plate (5) is capable of synchronous displacement with the clutch outer hub (1).

6. A DHT hybrid coupling mechanism according to claim 5, characterized in that: The clutch inner hub (11) is connected to a friction plate (4), and the friction plate (4) can be in contact with or separated from the thin pressure plate (5).

7. A DHT hybrid coupling mechanism according to claim 5 or 6, characterized in that: There are at least two thin pressing plates (5), which are arranged at intervals.

8. A DHT hybrid coupling mechanism according to claim 6, characterized in that: The clutch outer hub (1) has a thick pressure plate (3) that can contact or separate from the friction plate (4) or the thin pressure plate (5).

9. A DHT hybrid coupling mechanism according to claim 6, characterized in that: The clutch outer hub (1) is connected to the outer circle of the thin pressure plate (5) by means of splines, and the clutch inner hub (11) is connected to the inner circle of the friction plate (4) by means of splines.

10. A DHT hybrid coupling mechanism according to claim 5 or 6, characterized in that: The input pulley shaft (10) is driven by a driving motor.

11. A DHT hybrid coupling mechanism according to claim 10, characterized in that: The input shaft (9) is driven by the engine.

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