CN220060379U - Dual mass flywheel and vehicle - Google Patents

Abstract

The utility model is applicable to the technical field of automobile parts, and provides a dual-mass flywheel and a vehicle, wherein the dual-mass flywheel comprises a main flywheel and a secondary flywheel which are coaxially arranged, and further comprises a locking mechanism, wherein the locking mechanism is arranged on one side of the main flywheel, which faces the secondary flywheel, and can lock the secondary flywheel so that the secondary flywheel can synchronously rotate along with the main flywheel; the utility model can effectively connect the main-stage flywheel and the secondary flywheel into a whole or separate the main-stage flywheel and the secondary flywheel, so that the dual-mass flywheel has the characteristics of a single-mass flywheel and reduces the damage to parts.

Description

Dual mass flywheel and vehicle

Technical Field

The utility model belongs to the technical field of automobile parts, and particularly relates to a dual-mass flywheel and a vehicle.

Background

The dual-mass flywheel divides an original flywheel into a main-stage flywheel and a secondary flywheel, wherein the main-stage flywheel is reserved on one side of an engine and plays a role of the original flywheel and is used for starting and transmitting the rotation torque of the engine, and the secondary flywheel is arranged on one side of a transmission system and is used for improving the rotation inertia of the transmission. An annular oil cavity is arranged between the primary flywheel and the secondary flywheel, a spring damper is arranged in the cavity, and the two flywheels are connected into a whole through the spring damper.

Because the dual-mass flywheel divides the single-mass flywheel into two parts, under the condition of the same arrangement space, the inertia of the main-stage flywheel is smaller than that of the single-mass flywheel, so when the main-stage flywheel is required to have large inertia, the dual-mass flywheel is inferior to the single-mass flywheel; and the resonance interval of the dual-mass flywheel is generally below idle speed, so resonance can be generated in the starting process, and further the conditions of shaking, abnormal sound and the like of the vehicle are caused easily, and the comfort and silence of the vehicle are affected.

At present, a dual-mass flywheel is provided, a clamping block is controlled by utilizing centrifugal force, and when the rotating speed of the flywheel is high, a spring damper is clamped through the clamping block, so that the effect of integrating a main-stage flywheel and a secondary flywheel is achieved; however, this approach requires the relevant structure to be disposed near the spring damper, and requires a relatively high space requirement and assembly difficulty.

Disclosure of Invention

The utility model provides a dual-mass flywheel and a vehicle, which at least solve the problem that the existing dual-mass flywheel does not have the single-mass flywheel characteristic.

The embodiment of the utility model provides a dual-mass flywheel, which comprises a main flywheel and a secondary flywheel which are coaxially arranged, and further comprises:

the locking mechanism is arranged on one side of the primary flywheel, which faces the secondary flywheel, and can lock the secondary flywheel so that the secondary flywheel can synchronously rotate along with the primary flywheel.

In an embodiment, the locking mechanism can be abutted against the secondary flywheel so as to lock the secondary flywheel through friction force between the locking mechanism and the secondary flywheel.

In an embodiment, the locking member includes a lever portion and an elastic portion wound around the lever portion, the elastic portion is abutted against the base, and the lever portion can deform in a direction of the main flywheel, so that the elastic portion deforms in a direction of approaching the secondary flywheel and abuts against the secondary flywheel.

In an embodiment, the locking mechanism further includes a grommet disposed between the elastic portion and the base.

In an embodiment, the lever portion includes a plurality of elastic pieces disposed at intervals, and the elastic pieces extend from the elastic portion in a direction away from the main flywheel.

In an embodiment, the secondary flywheel is provided with a receiving groove, and the elastic part is accommodated in the receiving groove and can be abutted against the bottom wall of the receiving groove.

In one embodiment, the base comprises a chassis part and a boss part protruding from the chassis part, and the chassis part is connected to the main flywheel; the boss part is arranged in a protruding mode in the direction of the secondary flywheel, and the locking piece is arranged on one side, facing the secondary flywheel, of the boss part.

In an embodiment, the chassis part and the boss part are coaxially arranged, and the chassis part is coaxially and fixedly connected to the main flywheel; the secondary flywheel is rotatably connected to the boss portion.

The embodiment of the utility model also provides a vehicle comprising the dual-mass flywheel.

The utility model makes an improved design aiming at the problem that the existing dual-mass flywheel does not have the single-mass flywheel characteristic, and is provided with the locking mechanism, the main-stage flywheel and the secondary flywheel can be connected into a whole and synchronously rotate through the locking mechanism, and the main-stage flywheel and the secondary flywheel can be separated by the locking mechanism, so that the dual-mass flywheel can have the single-mass flywheel characteristic and the dual-mass flywheel characteristic; the locking mechanism is arranged on one side of the primary flywheel, facing the secondary flywheel, so that the locking mechanism can conveniently lock the secondary flywheel, and meanwhile, the requirement on space and the assembly difficulty are reduced;

the utility model has simple structure, can effectively connect the main-stage flywheel and the secondary flywheel into a whole or separate the main-stage flywheel and the secondary flywheel, ensures that the dual-mass flywheel has the characteristics of a single-mass flywheel, reduces the damage to parts, prolongs the service life and has strong practicability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic side view of a dual mass flywheel according to an embodiment of the present utility model.

Fig. 2 is a schematic front view of the dual mass flywheel shown in fig. 1.

Fig. 3 is a schematic cross-sectional view taken along line A-A in fig. 2.

Fig. 4 is a partially enlarged schematic view at B in fig. 3.

Fig. 5 is a schematic side view of a locking mechanism in the dual mass flywheel shown in fig. 1.

Fig. 6 is a schematic front view of the locking mechanism in the dual mass flywheel of fig. 1.

Fig. 7 is a schematic cross-sectional view at C-C of fig. 6.

Fig. 8 is a perspective view of a locking member of the locking mechanism shown in fig. 5.

Fig. 9 is a perspective view of the base of the locking mechanism shown in fig. 5.

The meaning of the labels in the figures is:

100. a dual mass flywheel;

10. a primary flywheel;

20. a secondary flywheel; 21. a receiving groove; 211. a bottom wall; 212. a sidewall; 213. a first through hole;

30. a locking mechanism; 31. a base; 311. a chassis part; 312. a boss portion; 313. a second through hole; 32. a locking member; 321. a lever part; 3211. a spring plate; 3212. a deformation cavity; 322. an elastic part; 33. and a backing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail below with reference to the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Because the dual-mass flywheel divides the single-mass flywheel into two parts, under the condition of the same arrangement space, the inertia of the main-stage flywheel is smaller than that of the single-mass flywheel, so when the main-stage flywheel is required to have large inertia, the dual-mass flywheel is inferior to the single-mass flywheel; and the resonance interval of the dual-mass flywheel is generally below idle speed, so resonance can be generated in the starting process, and further the conditions of shaking, abnormal sound and the like of the vehicle are caused easily, and the comfort and silence of the vehicle are affected.

At present, a dual-mass flywheel is provided, a clamping block is controlled by utilizing centrifugal force, and when the rotating speed of the flywheel is high, a spring damper is clamped through the clamping block, so that the effect of integrating a main-stage flywheel and a secondary flywheel is achieved; however, this approach is poorly controllable, has poor stability, and is prone to damage to the spring damper.

The utility model provides a dual-mass flywheel and a vehicle, wherein a locking mechanism is arranged in the dual-mass flywheel, the main-stage flywheel and the secondary flywheel can be connected into a whole through the locking mechanism and synchronously rotate, and the main-stage flywheel and the secondary flywheel can be separated by the locking mechanism, so that the dual-mass flywheel can have the characteristics of a single-mass flywheel and the dual-mass flywheel; the locking mechanism is arranged on one side of the primary flywheel, which faces the secondary flywheel, so that the locking mechanism can lock the secondary flywheel conveniently.

In order to describe the technical scheme of the utility model, the following description is made with reference to specific drawings and embodiments.

Referring to fig. 1 to 3, a first aspect embodiment of the present utility model provides a dual mass flywheel 100, the dual mass flywheel 100 comprising a primary flywheel 10, a secondary flywheel 20 and a locking mechanism 30.

The main-stage flywheel 10 and the secondary flywheel 20 are coaxially arranged, the main-stage flywheel 10 is used for being connected with an output shaft of an engine, the main-stage flywheel 10 plays a role of a single-mass flywheel, namely plays a role of starting and transmitting engine torque, the secondary flywheel 20 is used for being connected with an input shaft of a transmission, and the secondary flywheel 20 plays a role of improving rotational inertia of the transmission; a ring-shaped oil cavity is arranged between the main-stage flywheel 10 and the secondary flywheel 20, a spring damper (not shown in the figure) is arranged in the oil cavity, and two ends of the spring damper are respectively connected with the main-stage flywheel 10 and the secondary flywheel 20, so that the main-stage flywheel 10 can rotate to drive the secondary flywheel 20 to rotate through the spring damper, namely, relative movement between the main-stage flywheel 10 and the secondary flywheel 20 exists in the process that the main-stage flywheel 10 drives the secondary flywheel 20 to rotate, and therefore, when an engine is under idle speed, the dual-mass flywheel 100 is easy to generate resonance and causes conditions such as shaking and abnormal sound of a vehicle; the primary flywheel 10 and the secondary flywheel 20 are of a design commonly used in dual mass flywheels 100 and will not be described in further detail.

The locking mechanism 30 can lock the secondary flywheel 20, and the locking mechanism 30 can connect the secondary flywheel 20 and the primary flywheel 10, so that the secondary flywheel 20 can synchronously rotate with the primary flywheel 10, that is, the locking mechanism 30 can connect the secondary flywheel 20 and the primary flywheel 10 into a whole, and no relative movement exists between the primary flywheel 10 and the secondary flywheel 20 in the rotation process, and the primary flywheel 10 and the secondary flywheel 20 can be regarded as a whole and have the characteristic of a single mass flywheel.

In some embodiments, the locking of the secondary flywheel 20 by the locking mechanism 30 may be achieved by friction, that is, the locking mechanism 30 can abut against the secondary flywheel 20 and enable the secondary flywheel 20 to rotate synchronously with the primary flywheel 10 by friction, where the locking mechanism 30 may be an electric telescopic structure, a hydraulic telescopic structure or other structures; in other embodiments, the locking of the secondary flywheel 20 by the locking mechanism 30 may also be achieved by an inserting structure, for example, a plurality of inserting holes opposite to the locking mechanism 30 are formed on the secondary flywheel 20, the locking mechanism 30 may be inserted into the inserting holes, so that the secondary flywheel 20 and the primary flywheel 10 rotate synchronously, and in order to ensure that the locking mechanism 30 can be accurately inserted into the inserting holes, a horn-shaped opening may be further formed at one end of the inserting hole facing the locking mechanism 30; it will be appreciated that the locking of the secondary flywheel 20 by the locking mechanism 30 is not limited to being achieved by friction or plugging, but may be achieved by a movable snap-fit or other means.

The locking mechanism 30 is arranged on one side of the primary flywheel 10 facing the secondary flywheel 20, and the locking target of the locking mechanism 30 is the secondary flywheel 20, so that the locking mechanism 30 is arranged on one side of the primary flywheel 10 facing the secondary flywheel 20, the locking operation of the locking mechanism 30 can be facilitated, and on the premise that the secondary flywheel 20 can be locked by the locking mechanism 30, the locking mechanism 30 can be positioned at any position on one side of the primary flywheel 10 facing the secondary flywheel 20; in some embodiments, the locking mechanism 30 may be located at a central location of the primary flywheel 10 and disposed coaxially with the primary flywheel 10; in other embodiments, the locking mechanism 30 may also be in an off-center position with respect to the primary flywheel 10.

It will be appreciated that the locking mechanism 30 is capable of locking the secondary flywheel 20, and also of unlocking the secondary flywheel 20, so that the dual mass flywheel 100 can have both its own characteristics and the characteristics of a single mass flywheel.

In the embodiment, the locking mechanism 30 is arranged in the dual-mass flywheel 100, and the main-stage flywheel 10 and the secondary flywheel 20 can be connected into a whole through the locking mechanism 30 and synchronously rotate, so that the dual-mass flywheel 100 can also have the characteristic of a single-mass flywheel, and the locking mechanism 30 can also separate the main-stage flywheel 10 and the secondary flywheel 20; in this embodiment, the locking mechanism 30 is further disposed at any position of the primary flywheel 10 facing the secondary flywheel 20, so that the locking mechanism 30 can perform locking operation on the secondary flywheel 20, and meanwhile, the requirement of the locking mechanism 30 on space can be reduced, and the assembly difficulty is reduced.

In an embodiment, the locking mechanism 30 can abut against the secondary flywheel 20 to lock the secondary flywheel 20 by the friction force between the locking mechanism 30 and the secondary flywheel 20, wherein during the abutting of the locking mechanism 30 against the secondary flywheel 20, the friction force applied by the locking mechanism 30 to the secondary flywheel 20 can gradually increase and slow down the secondary flywheel 20 relative to the primary flywheel 10, and finally enable the secondary flywheel 20 to synchronously rotate with the primary flywheel 10.

In some embodiments, the locking mechanism 30 may be an electric telescopic structure, a hydraulic telescopic structure, or other telescopic structure, where the locking mechanism 30 extends to be capable of abutting against the secondary flywheel 20 and generating friction force with the secondary flywheel 20; in other embodiments, the locking mechanism 30 may be a swing arm connected to the primary flywheel 10 in a swinging manner, and the swing arm swing rod may enable an end of the swing arm far away from the primary flywheel 10 to abut against the secondary flywheel 20 and generate friction force, so that the driving of the swing arm may be achieved through a motor, a rotary cylinder or other rotary driving devices; it will be appreciated that the manner in which the locking mechanism 30 abuts against the secondary flywheel 20 is not limited to being implemented by a telescopic structure or a swing arm structure, but may be implemented by other structures.

According to the embodiment, the connection between the primary flywheel 10 and the secondary flywheel 20 is realized through the friction force between the locking mechanism 30 and the secondary flywheel 20, the secondary flywheel 20 and the primary flywheel 10 are in a high-speed rotation state in the use process of the vehicle, the spring shock absorber is clamped by the clamping piece to fix the spring, or the connection between the primary flywheel 10 and the secondary flywheel 20 through the way that the secondary flywheel 20 is inserted by the inserting piece can lead to the connection workpiece to be subjected to larger tangential force, the secondary flywheel 20 or the workpiece is easy to damage, so that the stability of the dual-mass flywheel 100 is influenced, the friction force is utilized to connect the primary flywheel 10 and the secondary flywheel 20, the speed of the secondary flywheel 20 can be reduced through the friction force after the locking mechanism 30 is abutted against the secondary flywheel 20, and finally, the locking mechanism 30 is connected with the secondary flywheel 20, the action of the tangential force is reduced in the process, the situation that the workpiece is inserted or the secondary flywheel 20 is possibly damaged by the parts in the high-speed rotation state is improved, and the stability and the service life of the dual-mass flywheel 100 are improved.

In some embodiments, the locking mechanism 30 includes a base 31 and a locking member 32, the base 31 is disposed on the primary flywheel 10, the base 31 can rotate synchronously with the primary flywheel 10, and the base 31 is used to provide a fixed foundation for the locking member 32; the base 31 may be a separate component or may be part of the primary flywheel 10; the material of the base 31 may be pure metal, alloy, nonmetallic composite material or other materials, and the material of the base 31 may be the same as that of the main flywheel 10; the shape of the base 31 may be cylindrical, cylindrical or other shape; the base 31 may be bolted to the primary flywheel 10, or may be snapped, riveted, or otherwise attached to the primary flywheel 10.

The locking piece 32 is movably connected to the base 31, and the locking piece 32 and the secondary flywheel 20 are arranged at intervals, that is, a gap exists between the locking piece 32 and the secondary flywheel 20, so that the locking piece 32 is prevented from affecting the movement of the secondary flywheel 20 relative to the primary flywheel 10; at least part of the locking piece 32 can move towards the direction close to the secondary flywheel 20 and is abutted against the secondary flywheel 20, when the locking piece 32 is abutted against the secondary flywheel 20, the locking piece 32 can be connected with the secondary flywheel 20 into a whole by virtue of friction, and at the moment, the primary flywheel 10 can drive the secondary flywheel 20 to rotate through the base 31 and the locking piece 32, so that the secondary flywheel 20 can synchronously rotate along with the primary flywheel 10 without driving the secondary flywheel 20 to rotate through a spring damper.

In some embodiments, movement of at least a portion of the locking member 32 in a direction toward the secondary flywheel 20 means that the locking member 32 moves entirely in a direction toward the secondary flywheel 20 and entirely abuts the secondary flywheel 20; in other embodiments, at least a portion of the locking member 32 moving in a direction toward the secondary flywheel 20 means that a portion of the locking member 32 moves in a direction toward the secondary flywheel 20 and only the portion of the locking member 32 abuts the secondary flywheel 20, where the locking member 32 may be an assembly of multiple components, and the locking member 32 may also be a deformable component.

The shape of the locking member 32 may be a disk shape, a strip shape or other shapes; the material of the locking member 32 may be pure metal, alloy, nonmetallic composite material or other materials, and the locking member 32 should have high strength because the locking member 32 is connected with the secondary flywheel 20 by friction force, and in the process of connecting the locking member 32 with the secondary flywheel 20, there is relative rotation and friction between the secondary flywheel 20 and the locking member 32.

The locking piece 32 is at least in an initial state, when the locking piece 32 is in the initial state, the locking piece 32 and the secondary flywheel 20 are arranged at intervals, and at the moment, the primary flywheel 10 drives the secondary flywheel 20 to rotate through the spring damper; the locking member 32 has at least a locking state, and when the locking member 32 is in the locking state, the locking member 32 at least partially abuts against the secondary flywheel 20, and at this time, the secondary flywheel 20 can rotate synchronously with the locking member 32.

It can be appreciated that, since the primary flywheel 10 needs to drive the secondary flywheel 20 to rotate through the base 31 and the locking member 32, the movable connection of the locking member 32 relative to the base 31 is limited to the direction approaching or separating from the secondary flywheel 20, and the locking member 32 cannot rotate relative to the base 31, which can be achieved by providing a chute, a guide post or other structures.

In some embodiments, the locking member 32 may be a separate driving device, for example, an electric telescopic rod is provided, such that one end of the electric telescopic rod is connected to the base 31 and the other end of the electric telescopic rod is connected to the locking member 32, and the electric telescopic rod extends to enable the locking member 32 to abut against the secondary flywheel 20, where the electric telescopic rod may be replaced by a cylinder, a hydraulic driving device or other telescopic device, and is not limited to the electric telescopic rod; in other embodiments, actuation of the lock-up member 32 may also be coordinated with other structures in the vehicle, such as a clutch.

When the dual-mass flywheel 100 provided in this embodiment is in use, when the dual-mass flywheel 100 is required to provide a larger inertia, a user can drive the locking member 32 to move and make the locking member 32 abut against the secondary flywheel 20, when the locking member 32 abuts against the secondary flywheel 20, the primary flywheel 10 can drive the locking member 32 to rotate through the base 31, the locking member 32 drives the secondary flywheel 20 to rotate by virtue of the friction between the locking member 32 and the secondary flywheel 20, so as to achieve the effect that the primary flywheel 10 drives the secondary flywheel 20 to synchronously rotate, and after the locking member 32 abuts against the secondary flywheel 20, no relative movement exists between the primary flywheel 10 and the secondary flywheel 20; when the characteristics of the dual mass flywheel 100 are required to be utilized, the locking member 32 can be moved to the initial position, and at this time, the locking member 32 is spaced from the secondary flywheel 20, and the primary flywheel 10 drives the secondary flywheel 20 to rotate through the spring damper.

It will be appreciated that control of the locking member 32 may be manually controlled by a user or may be accomplished by a predetermined program, such as automatically controlling the state of the locking member 32 based on engine speed.

In this embodiment, the connection between the primary flywheel 10 and the secondary flywheel 20 is achieved by the friction between the locking member 32 and the secondary flywheel 20, after the locking member 32 abuts against the secondary flywheel 20, the speed of the secondary flywheel 20 can be reduced by the friction, and finally the locking member 32 is connected with the secondary flywheel 20, so that the tangential force is reduced in the process, the situation that the secondary flywheel 20 in the state of high-speed rotation is possibly damaged due to the insertion or clamping of the workpiece is improved, and the stability and the service life of the dual-mass flywheel 100 are improved.

Referring to fig. 3, 4 and 8, in an embodiment, the locking member 32 includes a lever portion 321 and an elastic portion 322 wound around the lever portion 321, the elastic portion 322 is abutted against the base 31, the lever portion 321 can deform in a direction of the primary flywheel 10, so that the elastic portion 322 deforms in a direction of approaching the secondary flywheel 20 and abuts against the secondary flywheel 20, the elastic portion 322 cannot move in a direction of approaching the primary flywheel 10 due to restriction of the base 31, and during movement of the lever portion 321 in a direction of approaching the primary flywheel 10, an abutting portion of the elastic portion 322 and the base 31 acts like a lever fulcrum, so that the locking member 32 on both sides of an abutting portion of the elastic portion 322 and the base 31 deforms in opposite directions; that is, in the present embodiment, the elastic portion 322 of the substantially locking member 32, which moves in a direction approaching the secondary flywheel 20 and abuts against the secondary flywheel 20.

Because the lever portion 321 has a space for moving in a direction approaching the main stage flywheel 10, and the abutment of the elastic portion 322 and the base 31 does not have a space for moving in a direction approaching the main stage flywheel 10, in some embodiments, a groove is provided on the base 31 to provide a movement space for the lever portion 321; in other embodiments, the base 31 is provided with a protruding portion abutting against the elastic portion 322, so as to form a movement space of the lever portion 321 at one side of the protruding portion.

It can be appreciated that, in the present embodiment, the deformation of the locking member 32 is used to achieve the effect that the elastic portion 322 abuts against the secondary flywheel 20, and when the locking member 32 is deformed, the moving distance of the elastic portion 322 is generally smaller, so that when the locking member 32 is in the initial state, the spacing distance between the elastic portion 322 and the secondary flywheel 20 is smaller.

Referring to fig. 4 and 5, in some embodiments, the locking mechanism 30 further includes a backing ring 33, where the backing ring 33 is disposed between the elastic portion 322 and the base 31, and specifically, one side of the backing ring 33 abuts against the elastic portion 322, and the other side abuts against the base 31; the backing ring 33 is an annular member, that is, a space exists in the middle of the backing ring 33, so that the lever portion 321 of the locking member 32 is opposite to the space of the backing ring 33, at this time, the backing ring 33 can provide space for movement of the lever portion 321, and the abutting position of the backing ring 33 and the elastic portion 322 can act like a lever fulcrum.

Referring to fig. 5, 6 and 8, in some embodiments, the lever portion 321 includes a plurality of elastic pieces 3211 disposed at intervals, the plurality of elastic pieces 3211 jointly form the lever portion 321, the elastic pieces 3211 extend from the elastic portion 322 in a direction away from the primary flywheel 10, at this time, the plurality of elastic pieces 3211 jointly form a deformation cavity 3212, and the plurality of elastic pieces 3211 are disposed at intervals, so that a side, away from the elastic portion 322, of the elastic pieces 3211 can deform into the deformation cavity 3212 and can drive the elastic portion 322 to deform in a direction close to the secondary flywheel 20.

In this embodiment, referring to fig. 8, the number of the elastic pieces 3211 may be two, three, six, eight or other numbers, and the plurality of elastic pieces 3211 are circumferentially arranged at intervals, so that the deformation cavity 3212 is a bowl-shaped space, and at this time, the driving device for driving the deformation of the locking member 32 can drive the elastic pieces 3211 to deform toward the inside of the deformation cavity 3212, so that the elastic portion 322 can deform toward a direction close to the secondary flywheel 20.

In some embodiments, the locking member 32 is connected to the base 31 by a rivet, for example, a through hole may be formed in the elastic portion 322, and the rivet is fixed to the base 31 after passing through the through hole, so as to fix the locking member 32, note that, to avoid affecting the deformation of the peripheral side, the inner diameter of the through hole should be larger than the outer diameter of the rivet, for example, the rivet may be disposed at a space between adjacent elastic sheets 3211, so as to avoid affecting the deformation of the elastic portion 322 by the rivet; in another embodiment, the locking member 32 may be fixed to the base 31 by a bolt or other member passing through the through hole, so as to fix the locking member 32.

In some embodiments, another backing ring 33 is disposed on the side of the elastic portion 322 facing the secondary flywheel 20, that is, the backing rings 33 are disposed on both sides of the elastic portion 322, so as to better provide space for deformation of the elastic portion 322, and avoid the large head of the rivet from affecting the deformation of the elastic portion 322.

In some embodiments, the locking member 32 is made of a high strength metal or high strength alloy to ensure a long service life of the locking member 32; the locking member 32 is a sheet-like member, which is arranged so that the locking member 32 can have a certain deformability and can be reset after the external force is removed.

Referring to fig. 4, in an embodiment, the secondary flywheel 20 is provided with a receiving slot 21, the receiving slot 21 is used for receiving the locking member 32, the receiving slot 21 can also receive a part of the base 31, and specifically, an elastic portion 322 of the locking member 32 is received in the receiving slot 21 and can abut against a bottom wall 211 of the receiving slot 21; the provision of the receiving groove 21 can further reduce the distance between the secondary flywheel 20 and the primary flywheel 10, thereby reducing the volume of the dual mass flywheel 100.

It can be appreciated that, when the locking member 32 is in the initial state, the secondary flywheel 20 can move relative to the primary flywheel 10, so that the accommodating groove 21 is disposed coaxially with the secondary flywheel 20, and the locking member 32 is disposed coaxially with the primary flywheel 10, so as to avoid the influence of the locking member 32 on the rotation of the secondary flywheel 20 relative to the primary flywheel 10, and also make the locking member 32 capable of moving in the accommodating groove 21 without being influenced by the rotation of the secondary flywheel 20.

In some embodiments, the bottom wall 211 of the accommodating groove 21 is provided with a first through hole 213, the elastic piece 3211 can pass through the first through hole 213, and the arrangement of the first through hole 213 enables a driving device for driving the deformation of the locking piece 32 to be placed outside the dual-mass flywheel 100, so that the volume of the dual-mass flywheel 100 is further reduced, and the dual-mass flywheel 100 can be matched with other parts of a vehicle to control the state of the locking piece 32; for example, a driving device may be additionally provided on the clutch of the vehicle to control the state of the locking member 32.

Referring to fig. 5 to 7 and 9, in an embodiment, the base 31 includes a chassis portion 311 and a boss portion 312, the chassis portion 311 is connected to the main stage flywheel 10, and the chassis portion 311 is used to connect the base 31 to the main stage flywheel 10, so that the main stage flywheel 10 can rotate to drive the chassis portion 311 to rotate; the chassis portion 311 may be connected to the main stage flywheel 10 by bolts, rivets, snaps, or other structures.

The boss portion 312 is protruding to locate the chassis portion 311, specifically, boss portion 312 is protruding to establish from chassis portion 311 to the direction that secondary flywheel 20 is located, and the locking piece 32 is located boss portion 312 and is located one side towards secondary flywheel 20 to make chassis portion 311 rotate and can drive boss portion 312 rotation, boss portion 312 is used for providing fixed basis for locking piece 32, specifically, boss portion 312 is located to the backing ring 33 and is located one side towards secondary flywheel 20 of boss portion 312, and locking piece 32 is located the backing ring 33 and is kept away from one side of boss portion 312.

The chassis portion 311 and the boss portion 312 may be integrally formed, or may be connected by a fastener, a bolt, an adhesive, or other means; the chassis portion 311 and the boss portion 312 may be made of pure metal, alloy, nonmetallic composite material or other materials, and the chassis portion 311 and the boss portion 312 may be made of the same or different materials; the shape of the bottom plate 311 may be a disk shape, a square plate body or other shapes, and the shape of the boss 312 may be a cylinder, a truncated cone, a prism or other shapes.

In some embodiments, the chassis portion 311 is coaxially disposed with the boss portion 312, and the chassis portion 311 is coaxially and fixedly connected to the primary flywheel 10, and the secondary flywheel 20 is rotatably connected to the boss portion 312, that is, the primary flywheel 10, the chassis portion 311, the boss portion 312 and the secondary flywheel 20 are all coaxially disposed, when the locking member 32 is in the initial state, the secondary flywheel 20 can rotate around the boss portion 312 relative to the primary flywheel 10, and when the locking member 32 is in the locked state, the secondary flywheel 20 can be connected to the boss portion 312 and directly driven by the primary flywheel 10 through the transmission of the boss portion 312 and the chassis portion 311 and synchronously rotates with the primary flywheel 10.

In this embodiment, the boss 312 is used to provide a fixed foundation for the backing ring 33 and the locking member 32, and also to provide a fixed foundation for the secondary flywheel 20, and to transmit power from the primary flywheel 10, so that the primary flywheel 10 drives the secondary flywheel 20 to rotate synchronously when the locking member 32 is in the locked state.

In some embodiments, the boss portion 312 is cylindrical in shape and one end of the boss portion 312 extends into the receiving groove 21 to facilitate rotation of the secondary flywheel 20 about the boss portion 312; bearings can be arranged between the boss portion 312 and the side wall 212 of the accommodating groove 21, so that the secondary flywheel 20 can rotate around the boss portion 312 better, friction force in the rotation process is reduced, specifically, an inner ring of the bearings is connected to the side wall of the boss portion 312, and an outer ring of the bearings is connected to the side wall 212 of the accommodating groove 21.

It will be appreciated that the bearing is spaced from the bottom wall 211 of the accommodating groove 21, so as to avoid friction between the bottom wall 211 of the accommodating groove 21 and the bearing to affect rotation of the secondary flywheel 20, and the arrangement can provide space for deformation of the elastic portion 322 of the locking member 32, so as to avoid affecting deformation of the elastic portion 322.

In some embodiments, the chassis portion 311 is disc-shaped, and the chassis portion 311 is provided with a plurality of fixing through holes, which are uniformly spaced around the boss portion 312, so that bolts, rivets or other workpieces can pass through the fixing through holes and be fixed to the primary flywheel 10, i.e., the chassis portion 311 can be fixed to the primary flywheel 10.

In some embodiments, the base 31 is provided with a second through hole 313 penetrating through the chassis portion 311 and the boss portion 312, and an output end of the engine can directly enter the second through hole 313 and be connected with an inner wall of the second through hole 313, so as to drive the base 31 to rotate, and drive the main flywheel 10 to rotate through the base 31; and the second through hole 313 can be opposite to the lever portion 321 of the locking member 32 so as to provide sufficient space for deformation of the lever portion 321.

When the dual-mass flywheel 100 provided by the embodiment of the first aspect of the present utility model is used, when the characteristics of a single-mass flywheel are required to be utilized, the driving device can be controlled and moved towards the direction close to the base 31, so that the driving device is pressed against the plurality of elastic pieces 3211 of the lever portion 321, along with the movement of the driving device, the plurality of elastic pieces 3211 of the lever portion 321 are gradually deformed towards the direction close to the base 31, and the elastic portion 322 is deformed towards the direction close to the secondary flywheel 20 under the action of the backing ring 33, and finally the elastic portion 322 is abutted against the bottom wall 211 of the accommodating groove 21, so that the secondary flywheel 20 is connected with the elastic portion 322, and at this time, the primary flywheel 10 can drive the secondary flywheel 20 to synchronously rotate through the base 31 and the locking piece 32, so that no relative movement exists between the primary flywheel 10 and the secondary flywheel 20; when the characteristics of the dual mass flywheel 100 are needed to be utilized, the driving device is only required to return to the original position, at this time, the locking piece 32 is reset and is in the initial state, the locking piece 32 and the secondary flywheel 20 are arranged at intervals, and the primary flywheel 10 drives the secondary flywheel 20 to rotate through the spring damper.

The first aspect of the present utility model provides the locking mechanism 30, which can make the primary flywheel 10 and the secondary flywheel 20 integrally connected and synchronously rotated, so that the dual-mass flywheel 100 can also have the characteristics of a single-mass flywheel, and the locking mechanism 30 can also separate the primary flywheel 10 and the secondary flywheel 20; the connection between the primary flywheel 10 and the secondary flywheel 20 is realized through the friction force between the locking piece 32 and the secondary flywheel 20, so that the situation that the secondary flywheel 20 in a high-speed rotation state is possibly damaged due to the insertion or clamping of a workpiece is improved, and the stability and the service life of the dual-mass flywheel 100 are improved; the locking mechanism 30 is disposed near the axis of the dual mass flywheel 100 for ease of control while reducing the impact on the dual mass flywheel 100.

An embodiment of the second aspect of the present utility model provides a vehicle, including the dual-mass flywheel 100 provided in the embodiment of the first aspect, and under the action of the dual-mass flywheel 100, the vehicle shake, abnormal sound and other situations are improved, and the comfort and silence are improved.

The vehicle in this embodiment may refer to a large vehicle, a small vehicle, a special vehicle, and the like, and is exemplified by a vehicle type, a truck type such as a heavy truck, a sedan type, an off-road type, a Multi-Purpose vehicle (MPV) type, or other types.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or the technical features of the lever part can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (10)

1. A dual mass flywheel comprising a primary flywheel and a secondary flywheel coaxially disposed, the dual mass flywheel further comprising:

the locking mechanism is arranged on one side of the primary flywheel, which faces the secondary flywheel, and can lock the secondary flywheel so that the secondary flywheel can synchronously rotate along with the primary flywheel.

2. The dual mass flywheel of claim 1, wherein the locking mechanism is capable of abutting against the secondary flywheel to lock the secondary flywheel by friction between the locking mechanism and the secondary flywheel.

3. The dual mass flywheel of claim 2, wherein the locking mechanism includes a base disposed on the primary flywheel, and a locking member is movably connected to the base, and is spaced from the secondary flywheel, and at least a portion of the locking member is capable of moving in a direction approaching the secondary flywheel and abutting against the secondary flywheel, so that the secondary flywheel can rotate synchronously with the primary flywheel.

4. A dual mass flywheel as claimed in claim 3 wherein the locking member comprises a lever portion and an elastic portion surrounding the lever portion, the elastic portion being in abutment with the base, the lever portion being deformable in a direction of the primary flywheel so as to deform the elastic portion in a direction approaching the secondary flywheel and in abutment with the secondary flywheel.

5. The dual mass flywheel of claim 4, wherein the locking mechanism further comprises a backing ring disposed between the resilient portion and the base.

6. The dual mass flywheel of claim 4, wherein the lever portion includes a plurality of spaced apart spring plates extending from the spring portion in a direction away from the primary flywheel.

7. The dual mass flywheel of claim 6, wherein the secondary flywheel has a receiving slot formed therein, and the resilient portion is received in the receiving slot and is adapted to abut against a bottom wall of the receiving slot.

8. The dual mass flywheel of any one of claims 3-7, wherein the base includes a chassis portion and a boss portion protruding from the chassis portion, the chassis portion being connected to the primary flywheel; the boss part is arranged in a protruding mode in the direction of the secondary flywheel, and the locking piece is arranged on one side, facing the secondary flywheel, of the boss part.

9. The dual mass flywheel of claim 8, wherein the chassis portion is coaxially disposed with the boss portion and the chassis portion is fixedly connected coaxially to the primary flywheel; the secondary flywheel is rotatably connected to the boss portion.

10. A vehicle comprising a dual mass flywheel as claimed in any one of claims 1 to 9.