Clutch, hybrid system and vehicle

Abstract

The application relates to the technical field of automobile hybrid transmission, in particular to a clutch, a hybrid system and an automobile. The clutch comprises a driving part, a driven part and an intermediate shaft of an engine; the engine can drive the driving part; the driving part comprises a clutch gear and a clutch inner hub; the clutch gear is sleeved on the intermediate shaft, and the clutch inner hub is fixedly connected with the clutch gear; the driven part comprises a pushing mechanism, a clutch sleeve and a clutch ring; the clutch ring is sleeved on the clutch inner hub, and the clutch sleeve is engaged with an intermediate shaft gear on the intermediate shaft; the pushing mechanism can push the clutch sleeve to move along the intermediate shaft gear, so that the clutch sleeve is in contact with the clutch inner hub via the clutch ring; when the clutch ring, the clutch sleeve and the clutch inner hub rotate synchronously, the clutch sleeve is engaged with the intermediate shaft gear and the clutch gear at the same time. The clutch, the hybrid system and the automobile solve the problems of the traditional clutch, such as large energy loss, long hydraulic execution response time and impact collision of the driving end and the driven end.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile hybrid transmission, in particular to a clutch, a hybrid system and an automobile. BACKGROUND

[0002] A traditional hybrid transmission generally adopts a multi-plate wet clutch and a dog clutch to realize power connection and disconnection.

[0003] However, the traditional multi-plate wet clutch needs to continuously exist a maintaining force during operation, and has a large energy loss; and has a slip problem under a large torque, and a long hydraulic execution response time.

[0004] However, the traditional dog clutch often has a problem that two rotating speed different main and driven ends are forced to engage, impact and collide, damage parts and generate noise and impact. SUMMARY

[0005] The application aims to provide a clutch, a hybrid system and an automobile, so as to solve the problems of the traditional multi-plate wet clutch, a large energy loss, a long hydraulic execution response time, and a slip problem under a large torque, and the problems of the traditional dog clutch that two rotating speed different main and driven ends are forced to engage, impact and collide, damage parts and generate noise and impact.

[0006] According to a first aspect of the application, a clutch is provided, the clutch comprising a driving part, a driven part and an intermediate shaft of an engine; an output end of the engine is capable of driving the driving part; the driving part comprises a clutch gear and a clutch inner hub; the clutch gear is sleeved on the intermediate shaft, and the clutch inner hub is sleeved on the clutch gear and fixedly connected with the clutch gear; the driven part comprises a pushing mechanism, a clutch sleeve and a clutch ring; the clutch ring is sleeved on the clutch inner hub, the clutch sleeve is engaged with an intermediate shaft gear on the intermediate shaft; the pushing mechanism is capable of pushing the clutch sleeve to move along the intermediate shaft gear, so that the clutch sleeve is in contact with the clutch inner hub via the clutch ring, and when the clutch ring, the clutch sleeve and the clutch inner hub rotate synchronously, the clutch sleeve is engaged with the intermediate shaft gear and the clutch gear at the same time.

[0007] In any of the above technical solutions, further, the outer wall of the clutch inner hub is provided with a plurality of sliding grooves extending in the axial direction; the second end of the sliding groove is formed with an opening, the opening comprises two symmetrical inclined surfaces; in the axial direction, the distance between the two inclined surfaces gradually increases in the direction from the first end to the second end of the sliding groove; the first end of the clutch ring is provided with a plurality of synchronous claws in the circumferential direction, and the plurality of synchronous claws correspond one-to-one to the plurality of sliding grooves; the synchronous claw comprises two symmetrical profiled inclined surfaces, and the two profiled inclined surfaces cooperate with the two inclined surfaces, and the synchronous claw can slide along the sliding groove.

[0008] In any of the above technical solutions, further, the inner side of the second end of the clutch ring is provided with an inner taper surface; the outer side of the first end of the clutch cover is provided with an outer taper surface matched with the inner taper surface; the pushing mechanism can push the clutch cover to move along the intermediate shaft gear, so that the outer taper surface of the clutch cover is in contact with the inner taper surface of the clutch ring; when the clutch ring, the clutch cover and the clutch inner hub rotate synchronously, the synchronous claw slides along the sliding groove, so that the clutch cover is engaged with the intermediate shaft gear and the clutch gear at the same time.

[0009] In any of the above technical solutions, further, the inner taper surface of the clutch ring is provided with carbon cloth.

[0010] In any of the above technical solutions, further, the second end of the clutch inner hub is provided with a limiting shoulder in the circumferential direction; the first end of the clutch ring is provided with a plurality of limiting claws in the circumferential direction; the limiting claw is clamped with the side of the limiting shoulder facing away from the clutch cover.

[0011] In any of the above technical solutions, further, a transition inclined surface is provided between the outer wall of the clutch inner hub and the limiting shoulder.

[0012] In any of the above technical solutions, further, the pushing mechanism comprises an execution motor, an execution push disc and a screw rod; the screw rod is sleeved on the intermediate shaft; the execution push disc comprises a threaded disc and a gear disc, the threaded disc is sleeved on the screw rod, and the internal thread of the threaded disc is matched with the external thread of the screw rod; the gear disc is sleeved on the intermediate shaft gear, the output shaft of the execution motor is provided with an output gear, and the output gear is engaged with the external teeth of the gear disc; the first end of the gear disc abuts against the second end of the clutch cover.

[0013] In any of the above technical solutions, further, the pushing mechanism further comprises a blocking ring; a ring groove is formed in the second end of the clutch sleeve; a ring eave is arranged at the first end of the gear disc, the ring groove is sleeved on the ring eave, and the gear disc and the clutch sleeve can rotate relative to each other; the blocking ring is fixedly connected to the second end of the clutch sleeve, and the ring eave is clamped between the clutch sleeve and the blocking ring.

[0014] In any of the above technical solutions, further, the pushing mechanism further comprises a screw bearing; the screw bearing is arranged between the screw rod and the intermediate shaft.

[0015] In any of the above technical solutions, further, in the axial direction, the size of the clutch gear spline of the clutch gear gradually decreases in the circumferential direction from the end of the clutch gear close to the pushing mechanism to the other end; and / or, the end of the clutch gear spline facing the pushing mechanism is provided with a chamfer, and the chamfer is arranged on both sides of each clutch gear spline in the circumferential direction.

[0016] In any of the above technical solutions, further, the driving part further comprises an intermediate shaft driving gear and an intermediate shaft bearing; the intermediate shaft driving gear is sleeved on the intermediate shaft and fixedly connected to the first end of the clutch inner hub; and the intermediate shaft bearing is arranged between the intermediate shaft and the intermediate shaft driving gear.

[0017] In any of the above technical solutions, further, the clutch further comprises a spring, and the spring is limited between the intermediate shaft driving gear and the clutch ring.

[0018] In any of the above technical solutions, further, the driven part further comprises an intermediate shaft driven gear; the intermediate shaft driven gear is fixed to the intermediate shaft and located at the first end of the intermediate shaft driving gear.

[0019] According to the second aspect of the present application, a hybrid system is provided, comprising the clutch as described above.

[0020] In any of the above technical solutions, further, the hybrid system further comprises an engine, an engine output shaft connected to the engine, an engine driving gear, an intermediate shaft driving gear, an intermediate shaft driven gear, a differential, and a differential gear connected to the differential; the intermediate shaft driving gear is sleeved on the intermediate shaft and fixedly connected to the first end of the clutch inner hub; the intermediate shaft driven gear is fixed to the intermediate shaft and located at the first end of the intermediate shaft driving gear; the engine driving gear is fixed to the engine output shaft, and the engine driving gear is engaged with the intermediate shaft driving gear; and the intermediate shaft driven gear is engaged with the differential gear.

[0021] In any of the above technical solutions, further, the hybrid system further comprises a drive motor, a drive motor output shaft connected with the drive motor, a drive motor driving gear, a drive motor driven gear, a drive motor intermediate shaft, a drive motor intermediate shaft driven gear, a differential, and a differential gear connected with the differential; the drive motor driving gear is fixed on the drive motor output shaft, and the drive motor driving gear is engaged with the drive motor driven gear; the drive motor driven gear and the drive motor intermediate shaft driven gear are both fixed on the drive motor intermediate shaft; the drive motor intermediate shaft driven gear is engaged with the differential gear.

[0022] In any of the above technical solutions, further, the hybrid system further comprises a generator, a generator output shaft connected with the generator, and a generator driving gear; the generator driving gear is fixed on the generator output shaft, and the generator driving gear is engaged with the engine driving gear.

[0023] According to the third aspect of the present application, a car is provided, comprising the hybrid system as described above.

[0024] The clutch of the present application comprises a driving part, a driven part and an intermediate shaft of an engine. The output end of the engine can drive the driving part. The driving part comprises a clutch gear and a clutch inner hub. The clutch gear is sleeved on the intermediate shaft, and the clutch inner hub is sleeved on the clutch gear and fixedly connected with the clutch gear. The driven part comprises a pushing mechanism, a clutch sleeve and a clutch ring. The clutch ring is sleeved on the clutch inner hub, and the clutch sleeve is engaged with the intermediate shaft gear. The pushing mechanism can push the clutch sleeve to move along the intermediate shaft gear, so that the clutch sleeve contacts the clutch inner hub through the clutch ring. When the clutch ring, the clutch sleeve and the clutch inner hub rotate synchronously, the clutch sleeve is engaged with the intermediate shaft gear and the clutch gear at the same time.

[0025] According to the above technical features, the present application has the following advantages:

[0026] The clutch of the present application realizes the function of connecting the power of the engine when needed and disconnecting the power of the engine when not needed. For example, when the power of the engine needs to be connected, the engine drives the clutch gear and the clutch inner hub to rotate synchronously. At this time, the pushing mechanism can push the clutch sleeve to move along the intermediate shaft gear, so that the clutch sleeve contacts the clutch inner hub through the clutch ring. During the contacting process, the rotating speed of the clutch sleeve and the clutch ring gradually approaches the rotating speed of the clutch inner hub (the clutch gear). When the clutch ring, the clutch sleeve and the clutch inner hub rotate synchronously (at this time, the rotating speed of the clutch gear is the same as the rotating speed of the intermediate shaft), the clutch sleeve is engaged with the intermediate shaft gear and the clutch gear at the same time, the power of the clutch gear is transmitted to the intermediate shaft, and the power of the engine is connected.

[0027] In summary, the clutch of the present application, on one hand, does not need to exist continuously during work, has low energy loss, and does not need long hydraulic execution response time, and the combination process is through gear engagement, and there is no problem of slipping under large torque. On the other hand, it can prevent the problem of impact collision, damage of parts, and generation of noise and impact when forcibly engaging the clutch sleeve and the clutch teeth with different rotation speeds.

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 The overall structure schematic diagram of the clutch of the embodiment of the present application is shown;

[0031] Figure 2 The partial structure schematic diagram of Figure 1 is shown;

[0032] Figure 3 The partial structure schematic diagram of Figure 2 is shown;

[0033] Figure 4 The structure schematic diagram of another view of Figure 3 is shown;

[0034] Figure 5 The partial structure schematic diagram of Figure 4 is shown;

[0035] Figure 6 The structure schematic diagram of the clutch inner hub of the embodiment of the present application is shown;

[0036] Figure 7 The structure schematic diagram of the clutch ring of the embodiment of the present application is shown;

[0037] Figure 8 The cross-sectional view of the partial structure of the clutch of the embodiment of the present application is shown;

[0038] Figure 9 The enlarged schematic diagram of the partial structure of the clutch of the embodiment of the present application is shown;

[0039] Figure 10Schematic diagram showing the clutch gear spline and the clutch sleeve spline of the embodiment of the present application;

[0040] Figure 11 Schematic diagram showing Figure 10 A enlarged schematic diagram of part A;

[0041] Figure 12 Schematic diagram showing the overall cross-sectional view of the clutch in the disengaged state of the embodiment of the present application;

[0042] Figure 13 Schematic diagram showing the overall cross-sectional view of the clutch in the engaged state of the embodiment of the present application;

[0043] Figure 14 Schematic diagram showing the overall view of the hybrid system in the first example of the present application;

[0044] Figure 15 Schematic diagram showing the overall view of the hybrid system in the second example of the present application.

[0045] Icon: 410-intermediate shaft; 4101-intermediate shaft gear; 421-intermediate shaft driven gear; 413-intermediate shaft bearing; 412-connection bolt; 411-intermediate shaft driving gear; 417-execution motor; 4171-output gear; 416-screw bearing; 415-screw; 414-execution push disc; 4141-threaded disc; 4142-gear disc; 41421-ring eave;

[0046] 701-spring; 702-clutch inner hub; 7021-outer wall; 7025-transition slope; 7023-inclined cutting surface; 7024-slotted groove; 7022-limiting shoulder; 703-clutch ring; 7034-carbon cloth; 7033-limiting jaw; 7032-contoured inclined cutting surface; 7031-synchronous jaw; 704-clutch gear; 7041-clutch gear spline; 70411-cutting angle; 705-clutch sleeve; 7051-outer tapered surface; 7052-clutch sleeve spline; 706-blocking ring;

[0047] 100-engine; 110-engine output shaft; 111-engine driving gear; 200-generator; 210-generator output shaft; 211-generator driving gear; 300-drive motor; 310-drive motor output shaft; 311-drive motor driving gear; 511-drive motor driven gear; 521-drive motor intermediate shaft driven gear; 510-drive motor intermediate shaft; 621-differential gear; 600-differential; 1111-engine second gear driving gear; 4111-intermediate shaft second gear driving gear; 700-clutch. DETAILED DESCRIPTION

[0048] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and thus particular embodiments described herein are not intended as being exhaustive of what the present disclosure can provide. For example, although processes are described with regard to the present disclosure, such processes can include more, fewer, or only a single process. Additionally, some processes can not be implemented even though they are described. Moreover, although processes are described herein as various separate processes, which can be performed by different systems, such processes can not necessarily be performed by different systems and the order of some processes can be changed, including that certain processes could be performed in an iterative or parallel manner. Additionally, various features that are described herein can be implemented as hardware, software, firmware, or combinations thereof, and can be implemented within one or more processors or external to one or more processors, including being implemented across multiple processors. Further, it will be appreciated that features described herein as being implemented with or across one or more processors can be implemented by one or more other processors.

[0049] The features described herein can be implemented in different forms and are not to be construed as limited to the examples described herein. Rather, the described examples have been provided for illustrative purposes so that those skilled in the art will be able to implement the methods, apparatuses, and / or systems described herein in a variety of ways.

[0050] Throughout the specification, when an element (such as a layer, region, or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly adjacent to," "directly on top of," or "directly covering" another element, there are no other elements interposed therebetween.

[0051] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0052] Although terms such as "first" and "second" can be used herein to describe various elements, components, regions, layers, or sections, these elements, components, regions, layers, or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, the first element, component, region, layer, or section described in the examples described herein could also be called a second element, component, region, layer, or section without departing from the teachings of the examples.

[0053] For ease of description, spatial terms, such as "above", "upper", "below", and "lower" can be used herein to describe one element's relationship to another element as the device is positioned in accordance with a drawing. Such spatial term is intended to encompass different orientations of the device in its operation, e.g., orientation of the device is flipped over. For example, if a device in a drawing is flipped over, a component described as above other component would then be oriented below the other component. Accordingly, the spatial term "above" encompasses both a position above and below depending on the orientation of the device. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatial terms used herein interpreted accordingly.

[0054] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" as used herein, are specifically intended to be construed as open-ended terms (i.e., the terms do not exclude additional, unrecited elements).

[0055] Due to manufacturing techniques and / or tolerances, variations of the shapes illustrated in the drawings can occur. Therefore, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include deviations in shapes that occur in manufacturing processes.

[0056] Features of the examples described herein can be combined with each other as would be apparent to one of ordinary skill in the art having the benefit of the present disclosure. Moreover, although examples described herein have a variety of configurations, other configurations are possible in which are apparent or obvious from this disclosure, as is also set forth in the following Claims.

[0057] The first aspect of the present application provides a clutch, thereby solving the problems of the conventional multi-plate wet clutch, large energy loss, long hydraulic execution response time, and slippage under large torque, and the problems of the conventional jaw clutch, impact collision of the master and driven ends with different rotation speeds, damage to parts, and noise and impact.

[0058] Reference is made below to Figures 1 to 13 The clutch according to some embodiments of the present application is described in detail.

[0059] As Figure 1 , Figure 12 and Figure 13As shown, the clutch 700 of the present application comprises a driving part, a driven part and the intermediate shaft 410 of the engine. The output end of the engine 100 can drive the driving part; the driving part comprises a clutch gear 704 and a clutch inner hub 702; the clutch gear 704 is sleeved on the intermediate shaft 410, and the clutch inner hub 702 is sleeved on the clutch gear 704 and fixedly connected with the clutch gear 704; the driven part comprises a pushing mechanism, a clutch sleeve 705 and a clutch ring 703; the clutch ring 703 is sleeved on the clutch inner hub 702, and the clutch sleeve 705 is engaged with the intermediate shaft gear 4101; the pushing mechanism can push the clutch sleeve 705 to move along the intermediate shaft gear 4101, so that the clutch sleeve 705 is in contact with the clutch inner hub 702 via the clutch ring 703; when the clutch ring 703, the clutch sleeve 705 and the clutch inner hub 702 rotate synchronously, the clutch sleeve 705 is engaged with the intermediate shaft gear 4101 and the clutch gear at the same time.

[0060] The clutch 700 of the present application realizes the function that the power of the engine 100 is connected when needed and disconnected when not needed. For example, when the power of the engine 100 needs to be connected, the engine 100 drives the clutch gear 704 and the clutch inner hub 702 to rotate synchronously; at this time, the pushing mechanism can push the clutch sleeve 705 to move along the intermediate shaft gear 4101, so that the clutch sleeve 705 is in contact with the clutch inner hub 702 via the clutch ring 703; during the contacting process, the rotating speed of the clutch sleeve 705 and the clutch ring 703 gradually approaches the rotating speed of the clutch inner hub 702 (the clutch gear 704); when the clutch ring 703, the clutch sleeve 705 and the clutch inner hub 702 rotate synchronously (at this time, the rotating speed of the clutch gear 704 is the same as that of the intermediate shaft gear 4101), the clutch sleeve 705 is engaged with the intermediate shaft gear 4101 and the clutch gear at the same time, the power of the clutch gear is transmitted to the intermediate shaft 410, and the power of the engine 100 is connected.

[0061] In summary, the clutch of the present application has the following advantages. On the one hand, during work, no continuous maintaining force is needed, the energy loss is low, and no long hydraulic execution response time is needed; in addition, the combination process is through gear engagement, and there is no problem of slipping under large torque. On the other hand, the problem of impact collision, damage of parts and generation of noise and impact caused by forced engagement when the rotating speeds of the clutch sleeve 705 and the clutch gear 704 are different can be prevented.

[0062] Optionally, in the embodiment of the present application, as shown in Figure 6 The outer wall 7021 of the clutch inner hub 702 is provided with a plurality of sliding grooves 7024 which extend in the axial direction; the second end of the sliding groove 7024 is formed with an opening, and the opening comprises two symmetrical inclined surfaces 7023; in the axial direction, from the first end of the sliding groove 7024 to the second end of the sliding groove 7024, the distance between the two inclined surfaces 7023 gradually increases.

[0063] Correspondingly, as shown in Figure 7 The first end of the clutch ring 703 is provided with a plurality of synchronization claws 7031 in the circumferential direction, and the plurality of synchronization claws 7031 correspond to the plurality of sliding grooves 7024 one by one; the synchronization claw 7031 includes two symmetrical profiled bevel surfaces 7032, and the two profiled bevel surfaces 7032 cooperate with the two inclined surfaces 7023, and the synchronization claw 7031 can slide along the sliding groove 7024.

[0064] Specifically, as shown in Figure 1 and Figure 12 For example, when the power of the engine 100 needs to be connected, the engine 100 drives the clutch gear 704 and the clutch inner hub 702 to rotate synchronously, at this time, the pushing mechanism can push the clutch sleeve 705 to move along the intermediate shaft gear 4101, so that the clutch sleeve 705 is in contact with the clutch ring 703, and during the contact process, when the speed of the clutch sleeve 705 (and the clutch ring 703) does not reach the speed of the clutch inner hub 702 (that is, before synchronous rotation), when the synchronization claw 7031 moves axially, when the profiled bevel surface 7032 contacts the inclined surface 7023, the inclined surface 7023 will pop the synchronization claw 7031 to the rear, the synchronization claw 7031 cannot enter the sliding groove 7024, that is, the clutch sleeve 705 cannot be engaged with the clutch gear 704. Repeat this, the rotational speed of the clutch sleeve 705 and the clutch ring 703 will gradually approach the rotational speed of the clutch inner hub 702 (the clutch gear 704), until the clutch ring 703, the clutch sleeve 705 and the clutch inner hub 702 rotate synchronously (at this time, the rotational speed of the clutch gear is the same as the rotational speed of the intermediate shaft gear 4101), the synchronization claw passes through the opening of the sliding groove 7024, slides along the sliding groove 7024, and finally realizes that the clutch sleeve 705 is engaged with the intermediate shaft gear 4101 and the clutch gear at the same time, the power of the clutch gear is transmitted to the intermediate shaft 410, and the power of the engine 100 is connected (as shown in Figure 3 The size of the opening of the sliding groove 7024 is greater than the size of the synchronization claw 7031).

[0065] Further, in order to quickly improve the rotational speed consistency, in the embodiment of the application, the inner side of the second end of the clutch ring 703 is provided with an inner taper surface. As shown in Figure 1 , Figure 4 and Figure 9 The first end of the clutch sleeve 705 is provided with an outer taper surface 7051 matched with the inner taper surface.

[0066] Further, as shown in Figure 7 The inner taper surface of the clutch ring 703 is pasted with carbon cloth 7034, which increases the friction and further improves the rotational speed consistency effect.

[0067] Specifically, when the power of the engine 100 needs to be connected, the pushing mechanism can push the clutch sleeve 705 to move along the intermediate shaft gear 4101, so that the outer taper surface 7051 of the clutch sleeve 705 gradually contacts the inner taper surface of the clutch ring 703. During the contacting process, the clutch sleeve 705 pushes the clutch ring 703 to be close to the clutch inner hub 702 under the pushing action of the pushing mechanism. At this time, if the speed of the clutch sleeve 705 (and the clutch ring 703) has not reached the speed of the clutch inner hub 702 (i.e., before the synchronous rotation), this makes the clutch inner hub 702 and the clutch ring 703 form a linear speed difference in the circumferential direction, which makes the clutch ring 703 generate a pushing force on the clutch inner hub 702 in the circumferential direction. The pushing force generates a reaction force on the profiled inclined surface 7032, which is perpendicular to the inclined surface 7023 and points away from the clutch inner hub 702. Under the action of the reaction force, the synchronous claw 7031 cannot enter the sliding groove 7024, so that the clutch sleeve 705 cannot be engaged with the clutch gear 704. Until the speed of the clutch sleeve 705 (and the clutch ring 703) reaches the speed of the clutch inner hub 702, the clutch inner hub 702 and the clutch ring 703 rotate at the same speed in the circumferential direction, and the pushing force of the clutch ring 703 on the clutch inner hub 702 in the circumferential direction disappears. When the clutch ring 703, the clutch sleeve 705 and the clutch inner hub 702 rotate synchronously, the synchronous claw passes through the opening of the sliding groove 7024 and slides along the sliding groove 7024, and finally realizes the engagement of the clutch sleeve 705 with the intermediate shaft gear 4101 and the clutch gear, so as to transmit the power of the clutch gear to the intermediate shaft 410 and realize the connection of the power of the engine 100.

[0068] In the embodiment, the outer taper surface 7051 of the clutch sleeve 705 cooperates with the inner taper surface of the clutch ring 703, the diameter of the friction pair is larger, and the amplification of the force makes the demand for the force provided by the pushing mechanism smaller, so that the structure is compact, the weight is light, the size is small, and the cost is low.

[0069] Further, in the embodiment of the present application, as shown in Figure 6 the second end of the clutch inner hub 702 is provided with a limiting shoulder 7022 in the circumferential direction. As shown in Figure 7 the first end of the clutch ring 703 is provided with a plurality of limiting claws 7033 in the circumferential direction, and the limiting claws 7033 are clamped with the side of the limiting shoulder 7022 facing away from the clutch sleeve 705, so as to realize the axial limiting of the clutch ring 703 by the limiting shoulder 7022 through the limiting claws 7033.

[0070] When the engine 100 does not need to be connected, the pushing mechanism pulls back the clutch sleeve 705, so that the clutch sleeve 705 is separated from the clutch ring 703 (the outer taper surface 7051 of the clutch sleeve 705 is separated from the inner taper surface of the clutch ring 703), and the clutch sleeve 705 is separated from the clutch gear 704. That is, when the engaged clutch gear 704 is separated from the clutch sleeve 705, the clutch ring 703 and the clutch sleeve 705 are completely separated from the friction pair, avoiding drag loss.

[0071] Optionally, as shown in Figure 6 , a transition slope 7025 is arranged between the outer wall 7021 of the clutch inner hub 702 and the limiting shoulder 7022. In this way, when the pushing mechanism pulls back the clutch sleeve 705, the transition slope 7025 facilitates the separation of the outer taper surface 7051 of the clutch sleeve 705 from the inner taper surface of the clutch ring 703.

[0072] The specific structure of the pushing mechanism will be described in detail below.

[0073] As shown in Figure 1 , Figure 12 and Figure 13 , the pushing mechanism includes an execution motor 417, an execution push disc 414, a screw rod 415, and a screw rod bearing 416 (a needle roller bearing). Among them, the screw rod 415 is sleeved on the intermediate shaft 410, the screw rod bearing 416 is arranged between the screw rod 415 and the intermediate shaft 410, and the execution motor 417 and the screw rod 415 are both fixed on the shell of the clutch 700 and are fixed.

[0074] As shown in Figure 1 , the execution push disc 414 includes a threaded disc 4141 and a gear disc 4142. The threaded disc 4141 is sleeved on the screw rod 415, and the inner thread of the threaded disc 4141 cooperates with the outer thread of the screw rod 415. The gear disc 4142 is sleeved on the intermediate shaft gear 4101, the output shaft of the execution motor 417 is provided with an output gear 4171, the output gear 4171 is engaged with the outer teeth of the gear disc 4142, and the first end of the gear disc 4142 is abutted with the second end of the clutch sleeve 705. When the execution motor 417 drives the execution push disc 414 to rotate, the execution push disc 414 will move axially on the screw rod 415, and push or pull the clutch sleeve 705 to engage or disengage with the clutch gear 704.

[0075] Optionally, in the embodiment of the present application, as shown in Figure 4 , a ring groove is formed in the second end of the clutch sleeve 705. The first end of the gear disc 4142 is provided with a ring eave 41421, the ring groove is sleeved on the ring eave 41421, and the gear disc 4142 and the clutch sleeve 705 can rotate relative to each other (the ring eave 41421 and the ring groove are in smooth contact).

[0076] Optionally, in the embodiment of the present application, as shown in Figure 3 , Figure 12 andFigure 13 As shown, the pushing mechanism further comprises a blocking ring 706 fixedly connected with the second end of the clutch sleeve 705, and the ring flange 41421 is clamped between the clutch sleeve 705 and the blocking ring 706. Thus, when the pushing mechanism pulls back the clutch sleeve 705, i.e. when the motor 417 drives the pushing disc 414 to rotate reversely, the ring flange 41421 of the gear disc 4142 will pull the blocking ring 706 and then pull the clutch sleeve 705.

[0077] In this embodiment, the motor 417 has the advantage of fast response, which avoids the situation that the hydraulic system responds slowly due to the increase of oil viscosity at low temperature.

[0078] Optionally, in the embodiment of the present application, as shown in Figure 10 and Figure 11 In the axial direction, the size of the clutch gear spline 7041 of the clutch gear 704 gradually decreases from the end close to the pushing mechanism to the other end.

[0079] Preferably, the clutch gear spline 7041 of the clutch gear 704 cooperates with the clutch sleeve spline 7052 on the clutch sleeve 705, and both are provided with a 1.5° inverted cone to prevent the gear pair from loosening during rotation.

[0080] Optionally, in the embodiment of the present application, as shown in Figure 10 and Figure 11 The end of the clutch gear spline 7041 of the clutch gear 704 facing the pushing mechanism is provided with a chamfer 70411, and each clutch spline is provided with a chamfer 70411 on both sides in the circumferential direction. Thus, the engagement of the clutch gear 704 and the clutch sleeve 705 is facilitated.

[0081] In addition, it is worth mentioning that, in the embodiment of the present application, as shown in Figure 1 , Figure 12 and Figure 13 The driving part further comprises an intermediate shaft driving gear 411 and an intermediate shaft bearing 413 (a needle bearing). The intermediate shaft driving gear 411 is sleeved on the intermediate shaft 410 and fixedly connected with the first end of the clutch inner hub 702.

[0082] For example, as shown in Figure 2 , Figure 12 and Figure 13 The clutch gear 704 and the clutch inner hub 702 are fixed to the intermediate shaft driving gear 411 by the connecting bolts 412 and rotate with the intermediate shaft driving gear 411. The connecting bolts 412 are uniformly arranged in the circumferential direction, and a weight-reducing groove is provided between adjacent bolts to reduce weight and cost.

[0083] The intermediate shaft bearing 413 is arranged between the intermediate shaft 410 and the intermediate shaft driving gear 411.

[0084] Further, in the embodiments of the present application, as shown in Figure 1 、 Figure 12 and Figure 13 , the clutch 700 further comprises a spring 701, which is sleeved on the clutch inner hub and is limited between the intermediate shaft driving gear 411 and the clutch ring 703. Specifically, the six evenly distributed limiting claws 7033 on the clutch ring 703 and the intermediate shaft driving gear 411 limit the axial position of the wave spring 701.

[0085] In addition, it is worth mentioning that, in the embodiments of the present application, as shown in Figure 1 、 Figure 12 and Figure 13 , the driven part further comprises an intermediate shaft driven gear 421. The intermediate shaft driven gear 421 is fixed to the intermediate shaft 410 and is located at the first end of the intermediate shaft driving gear 411.

[0086] In the following, the clutch of the present application applied in the hybrid system will be described in detail with reference to Figure 14 and Figure 15 , and the specific engagement or disengagement process.

[0087] The second aspect of the present application provides a power system comprising the clutch as described above.

[0088] As shown in Figure 14 , the hybrid system further comprises an engine 100, an engine output shaft 110 (integrally formed) connected with the engine 100, an engine driving gear 111, an intermediate shaft driving gear 411, an intermediate shaft driven gear 421, a differential 600 and a differential gear 621 (the differential gear 621 is fixed on the shell of the differential 600 and rotates therewith) connected with the differential.

[0089] Among them, the intermediate shaft driven gear 421 is interference pressed on the intermediate shaft 410 and rotates therewith. The engine driving gear 111 is fixed to the engine output shaft 110, the engine driving gear 111 is engaged with the intermediate shaft driving gear 411, and the intermediate shaft driven gear 421 is engaged with the differential gear 621.

[0090] Engine 100 direct drive mode:

[0091] The engine 100 works, the motor 300 does not work, and the generator 200 does not work.

[0092] Power transmission route:

[0093] Engine output shaft 110 → Engine drive gear 111 → Intermediate shaft drive gear 411 → Clutch gear 704 → Clutch sleeve 705 → Intermediate shaft 410 → Intermediate shaft driven gear 421 → Differential gear 621 → Differential 600 → Vehicle front wheels.

[0094] Continuing to refer to Figure 14 , the hybrid system further comprises a drive motor 300, a drive motor output shaft 310 connected with a rotor of the drive motor 300, a drive motor drive gear 311, a drive motor driven gear 511, a drive motor intermediate shaft 510, and a drive motor intermediate shaft driven gear 521.

[0095] Wherein, the drive motor drive gear 311 is fixed to the drive motor output shaft 310 (integrally formed), and the drive motor drive gear 311 is engaged with the drive motor driven gear 511; the drive motor driven gear 511 and the drive motor intermediate shaft driven gear 521 are both fixed to the drive motor intermediate shaft 510 (the drive motor driven gear 511 is interference-pressed on the drive motor intermediate shaft 510, and the drive motor intermediate shaft driven gear 521 is integrally formed with the drive motor intermediate shaft 510); the drive motor intermediate shaft driven gear 521 is engaged with the differential gear 621.

[0096] Pure electric mode:

[0097] The engine 100 is not working, the drive motor 300 is working, and the generator 200 is not working.

[0098] Power transmission route:

[0099] Drive motor output shaft 310 → Drive motor drive gear 311 → Drive motor driven gear 511 → Drive motor intermediate shaft 510 → Drive motor intermediate shaft driven gear 521 → Differential gear 621 → Differential 600 → Vehicle front wheels.

[0100] Continuing to refer to Figure 14 , the hybrid system further comprises a generator 200, a generator output shaft 210 connected with a rotor of the generator 200, and a generator drive gear 211.

[0101] Wherein, the generator drive gear 211 is fixed to the generator output shaft 210 (integrally formed), and the generator drive gear 211 is engaged with the engine drive gear 111.

[0102] Stop and generate mode:

[0103] The engine 100 is working, the drive motor 300 is not working, and the generator 200 is working.

[0104] Power transmission route:

[0105] Engine output shaft 110→engine drive gear 111→generator drive gear 211→generator output shaft 210→generator 200→battery.

[0106] Series-parallel mode:

[0107] Engine 100 works, drive motor 300 works, generator 200 works.

[0108] In hybrid mode, the power transmission route is consistent with the foregoing, at this time the engine 100 route and the drive motor 300 route work at the same time to drive the vehicle, at this time the generator 200 route also generates electricity at the same time.

[0109] Brake energy recovery mode:

[0110] Engine 100 does not work, drive motor 300 works, generator 200 does not work.

[0111] The power transmission route is vehicle front wheel→differential 600→differential gear 621→drive motor intermediate shaft driven gear 521→drive motor intermediate shaft 510→drive motor driven gear 511→drive motor drive gear 311→drive motor output shaft 310→drive motor 300→battery.

[0112] In addition, it is worth mentioning that, in the embodiment of the application, in order to implement the multi-gear structure, the structure of the above-mentioned clutch 700 can be mirror image arranged, that is, the structure (multiple groups) of the above-mentioned clutch 700 is arranged on one intermediate shaft 410.

[0113] For example, as shown in Figure 15 The engine two-gear drive gear 1111 is fixed on the engine output shaft 110, and the intermediate shaft two-gear drive gear 4111 is sleeved on the intermediate shaft 410 through a bearing sleeve.

[0114] Engine 100 two-gear direct drive mode:

[0115] Power transmission route:

[0116] Engine output shaft 110→engine two-gear drive gear 1111→intermediate shaft two-gear drive gear 4111→another set of clutch gears→another set of clutch sleeves→intermediate shaft 410→intermediate shaft driven gear 421→differential gear 621→differential 600→vehicle front wheel.

[0117] According to the third aspect of the application, an automobile is provided, which comprises the hybrid system as described above. The application of the hybrid system reduces the speed, the differential speed, and integrates the differential speed, the motor of the hybrid system is in the same housing as the transmission, which greatly shortens the axial length and reduces the weight of the assembly.

[0118] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same, and the protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any person skilled in the art can make modifications or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features within the technical range disclosed by the present application, and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered within the protection scope of the present application.

Claims

1. A clutch, characterized by The clutch comprises a driving part, a driven part and an intermediate shaft of an engine; An output end of the engine can drive the driving part; The driving part comprises a clutch gear and a clutch inner hub; The clutch gear is sleeved on the intermediate shaft, and the clutch inner hub is sleeved on the clutch gear and fixedly connected with the clutch gear; The driven part comprises a pushing mechanism, a clutch sleeve and a clutch ring; The clutch ring is sleeved on the clutch inner hub, and the clutch sleeve is engaged with an intermediate shaft gear on the intermediate shaft; The pushing mechanism can push the clutch sleeve to move along the intermediate shaft gear, so that the clutch sleeve is in contact with the clutch inner hub via the clutch ring, and when the clutch ring, the clutch sleeve and the clutch inner hub rotate synchronously, the clutch sleeve is engaged with the intermediate shaft gear and the clutch gear at the same time; An outer wall of the clutch inner hub is provided with a plurality of sliding grooves extending in the axial direction; A second end of the sliding groove is formed with an opening, and the opening comprises two symmetrical inclined surfaces; In the axial direction, the distance between the two inclined surfaces gradually increases from the first end of the sliding groove to the second end of the sliding groove; A plurality of synchronous claws are arranged on the first end of the clutch ring in the circumferential direction, and the plurality of synchronous claws correspond to the plurality of sliding grooves one by one; The synchronous claw comprises two symmetrical profiled inclined surfaces, and the two profiled inclined surfaces are matched with the two inclined surfaces, so that the synchronous claw can slide along the sliding groove; The pushing mechanism can push the clutch sleeve to move along the intermediate shaft gear, so that the outer taper surface of the clutch sleeve is in contact with the inner taper surface of the clutch ring, and when the clutch ring, the clutch sleeve and the clutch inner hub rotate synchronously, the synchronous claw slides along the sliding groove, so that the clutch sleeve is engaged with the intermediate shaft gear and the clutch gear at the same time; A limiting shoulder is arranged on the circumferential direction of the second end of the clutch inner hub; A plurality of limiting claws are arranged on the circumferential direction of the first end of the clutch ring; The limiting claw is clamped with the side of the limiting shoulder which faces away from the clutch sleeve; The pushing mechanism comprises an execution motor, an execution push disc and a screw rod; The screw rod is sleeved on the intermediate shaft; The execution push disc comprises a threaded disc and a gear disc, the threaded disc is sleeved on the screw rod, and the internal thread of the threaded disc is matched with the external thread of the screw rod; The gear disc is sleeved on the intermediate shaft gear, the output shaft of the execution motor is provided with an output gear, and the output gear is engaged with the external teeth of the gear disc; The first end of the gear disc abuts against the second end of the clutch sleeve; The pushing mechanism further comprises a blocking ring; The second end of the clutch sleeve is provided with a ring groove; The first end of the gear disc is provided with a ring eave, the ring groove is sleeved on the ring eave, and the gear disc and the clutch sleeve can rotate relative to each other; The blocking ring is fixedly connected with the second end of the clutch sleeve, and the ring eave is clamped between the clutch sleeve and the blocking ring.

2. The clutch of claim 1, wherein An inner taper surface is arranged on the inner side of the second end of the clutch ring; An outer taper surface matched with the inner taper surface is arranged on the outer side of the first end of the clutch sleeve.

3. The clutch of claim 2, wherein The inner taper surface of the clutch ring is provided with carbon cloth.

4. The clutch of claim 1, wherein A transition slope is arranged between the outer wall of the clutch inner hub and the limiting shoulder.

5. The clutch of claim 1, wherein, The pushing mechanism further comprises a screw bearing; The screw bearing is arranged between the screw and the intermediate shaft.

6. The clutch of claim 1, wherein, In the axial direction, the size of the clutch gear spline of the clutch gear gradually decreases in the direction from the end close to the pushing mechanism to the other end; And / or, the end of the clutch gear spline of the clutch gear facing the pushing mechanism is provided with a chamfer, and each clutch gear spline is provided with the chamfer on both sides in the circumferential direction.

7. The clutch of claim 1, wherein The driving part further comprises an intermediate shaft driving gear and an intermediate shaft bearing; The intermediate shaft driving gear is sleeved on the intermediate shaft and fixedly connected with the first end of the clutch inner hub; The intermediate shaft bearing is arranged between the intermediate shaft and the intermediate shaft driving gear.

8. The clutch of claim 7, wherein, The clutch further comprises a spring, which is limited between the intermediate shaft driving gear and the clutch ring.

9. The clutch of claim 7, wherein, The driven part further comprises an intermediate shaft driven gear; The intermediate shaft driven gear is fixed to the intermediate shaft and located at the first end of the intermediate shaft driving gear.

10. A hybrid system, characterized by The clutch comprises any one of claims 1-6.

11. The hybrid system according to claim 10, characterized by, The hybrid system further comprises an engine, an engine output shaft connected with the engine, an engine driving gear, an intermediate shaft driving gear, an intermediate shaft driven gear, a differential, and a differential gear connected with the differential; The intermediate shaft driving gear is sleeved on the intermediate shaft and fixedly connected with the first end of the clutch inner hub; The intermediate shaft driven gear is fixed to the intermediate shaft and located at the first end of the intermediate shaft driving gear; The engine driving gear is fixed to the engine output shaft, and the engine driving gear is engaged with the intermediate shaft driving gear; The intermediate shaft driven gear is engaged with the differential gear.

12. The hybrid system of claim 10, wherein, The hybrid system further comprises a drive motor, a drive motor output shaft connected with the drive motor, a drive motor driving gear, a drive motor driven gear, a drive motor intermediate shaft, a drive motor intermediate shaft driven gear, a differential, and a differential gear connected with the differential; The drive motor driving gear is fixed to the drive motor output shaft, and the drive motor driving gear is engaged with the drive motor driven gear; The drive motor driven gear and the drive motor intermediate shaft driven gear are both fixed to the drive motor intermediate shaft; The drive motor intermediate shaft driven gear is engaged with the differential gear.

13. The hybrid system of claim 11, wherein, The hybrid system further comprises a generator, a generator output shaft connected with the generator, and a generator driving gear; The generator driving gear is fixed to the generator output shaft, and the generator driving gear is engaged with the engine driving gear.

14. An automobile characterized by comprising: The hybrid system comprises any one of claims 10-13.

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