CN217396209U - Motor suspension, power device and vehicle - Google Patents

Abstract

The application discloses motor suspension, power device and vehicle. The motor suspension includes the outer tube, inner core and elastomer, the inner core sets up in the outer tube, the elastomer sets up between outer tube and inner core, the elastomer is equipped with first limit structure and second limit structure, first limit structure is including establishing the first stopper of the inner wall of outer tube and the first spacing body of connecting the outer tube and contacting with the inner core, first spacing body and first stopper set up side by side along the axial of outer tube, form the hole between first stopper and the inner core, first spacing body and first stopper all carry on spacingly to the radial of inner core at the outer tube. So, in power device acceleration and deceleration process, first limit structure and second limit structure are spacing radially and axially on the outer tube to the inner core, avoid motor suspension and the motor or the power device of being connected to produce resonance and lead to weakening the vibration isolation performance scheduling problem of motor suspension.

Description

Motor suspension, power device and vehicle

Technical Field

The application relates to the technical field of automobiles, in particular to a motor suspension, a power device and a vehicle.

Background

The modern automobile industry is revolutionarily changing, that is, the traditional fuel automobile is gradually replaced by a new energy automobile, wherein a pure electric automobile is emerging as one of the new energy automobiles, and with the marketing of the new energy automobile with high power and high endurance, the peak torque of a driving motor is large, the driving motor is rapidly converted in a certain rotation speed interval, and the torque can be reversely rotated from positive to negative in a very short time, so that the requirements on load, torque, vibration isolation performance, various stabilities and the like which can be borne by a motor suspension are continuously improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a motor suspension, a power device and a vehicle.

The motor suspension that this application embodiment provided includes outer tube, inner core and elastomer, the inner core sets up in the outer tube, the elastomer sets up the outer tube with between the inner core, the elastomer is equipped with first limit structure and second limit structure, first limit structure includes first stopper and first spacing body, first stopper is established the inner wall of outer tube, first spacing body with first stopper is followed the axial of outer tube sets up side by side, first spacing body coupling the outer tube and with the inner core contacts, first stopper with form the hole between the inner core, first spacing body with first stopper is all right the inner core is in the footpath of outer tube is upwards spacing.

So, at the in-process that the vehicle accelerated and slowed down, first limit structure and second limit structure can be spacing radially and axially at the outer tube to the inner core, avoid motor suspension and the motor or the power device of being connected to produce resonance and lead to weakening motor suspension's self vibration isolation performance to and when avoiding power assembly moment of torsion and load increase in the twinkling of an eye and reduce, reduce motor suspension torsional spacing ability scheduling problem.

In some embodiments, the surface of the first stopper facing the inner core is provided with a plurality of first protrusions.

In some embodiments, a first through hole is formed in the first position-limiting body, and the first through hole penetrates through the first position-limiting body along the axial direction of the outer tube.

In some embodiments, the second limiting structure includes a second limiting block connected to the inner wall of the outer tube, the second limiting block is located in the first through hole, and the second limiting block limits the inner core in the axial direction of the outer tube.

In some embodiments, the second limiting structure includes a second limiting body, the second limiting body connects the outer tube and the inner core, the second limiting body and the first limiting block are arranged on the same circumference at intervals, and the second limiting body limits the inner core in the axial direction of the outer tube.

In some embodiments, the second limiting body is provided with a second through hole, and the second through hole penetrates through the second limiting body along the axial direction of the outer tube.

In certain embodiments, the axial end face of the inner core has spaced apart second projections.

The power device provided by the embodiment of the application comprises a motor and the motor suspension of any one of the embodiments, wherein the inner core is connected with the motor.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a motor suspension according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a front face of a motor suspension according to an embodiment of the present application;

fig. 3 is a schematic structural view of the reverse side of the motor suspension of the embodiment of the present application;

fig. 4 is a schematic structural diagram of a front side of a motor suspension without an inner core according to an embodiment of the present application;

FIG. 5 is a schematic structural view of the reverse side of the motor suspension of the embodiment of the present application without the inner core installed;

fig. 6 is a perspective view of an inner core according to an embodiment of the present disclosure.

Description of the main element symbols:

the motor 200, the motor suspension 100, the outer tube 11, the inner core 12, the end surface 121, the second protrusion 1210, the elastic body 13, the first limiting structure 131, the first limiting block 1310, the first protrusion 1311, the first limiting body 1312, the first through hole 1313, the aperture 1314, the second limiting structure 132, the second limiting block 1320, the second limiting body 1321, and the second through hole 1322.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 4, a motor mount 100 according to an embodiment of the present disclosure includes an outer tube 11, an inner core 12, and an elastic body 13. Wherein the inner core 12 is arranged in the outer tube 11, the elastic body 13 is arranged between the outer tube 11 and the inner core 12, and the elastic body 13 is provided with a first limit structure 131 and a second limit structure 132.

The first limiting structure 131 includes a first limiting block 1310 and a first limiting body 1312, the first limiting block 1310 is disposed on an inner wall of the outer tube 11, the first limiting body 1312 and the first limiting block 1310 are disposed in parallel along an axial direction of the outer tube 11, the first limiting body 1312 is connected to the outer tube 11 and contacts the inner core 12, an aperture 1314 is formed between the first limiting block 1310 and the inner core 12, and the first limiting block 1312 and the first limiting block 1310 both limit the inner core 12 in a radial direction of the outer tube 11.

The power device provided by the embodiment of the application comprises a motor 200 and a motor suspension 100 provided by the application, wherein the inner core 12 is connected with the motor 200. The motor 200 may serve as a power source of the power plant.

The embodiment of the application provides a vehicle, which comprises the power device provided by the application. Wherein, the vehicle can be electric automobile, hybrid vehicle, storage battery car, robot and unmanned aerial vehicle etc..

Thus, in the process of accelerating and decelerating the vehicle, the first limiting structure 131 and the second limiting structure 132 can limit the inner core 12 in the radial direction and the axial direction of the outer tube 11, so as to avoid the problem that the self vibration isolation performance of the motor suspension 100 is weakened due to the resonance generated by the motor suspension 100 and the connected motor 200 or power device, and to avoid the problem that the self torsion resistance limiting capability of the motor suspension 100 is reduced when the torque and the load of the power assembly are increased and reduced instantaneously.

It should be noted that, the modern automobile industry is revolutionarily changing, that is, the traditional fuel automobile is gradually replaced by a new energy automobile, wherein a pure electric automobile is emerging as a new energy automobile, and with the marketing of a new energy automobile with high power and high endurance, the peak torque of a driving motor is large, the driving motor is rapidly converted in a certain rotation speed interval, and the torque can be reversely rotated from positive to negative in a very short time, so that the requirements on the load, the torque, the vibration isolation performance, various stabilities and the like which can be borne by the suspension of the motor are continuously improved.

Along with the development of automobiles towards pure electric power, the excitation frequency of a motor is far higher than that of traditional power, so that when the motor is accelerated and decelerated, the excitation frequency of the motor covers the inherent frequency of a motor suspension, the existing motor suspension bushing structure is easy to resonate with the motor or an automobile, the resonance can cause the vibration of the motor or the vibration of an automobile body to be intensified, the rigidity of the motor suspension bushing is suddenly changed, the vibration isolation performance of the motor suspension bushing is greatly reduced, and the comfort of drivers and passengers is further influenced; meanwhile, the driving motor is rapidly converted in a certain rotation speed interval, the torque can be reversely rotated from positive to negative in a very short time, the impact and the loading force which can be borne by the motor suspension bushing are large, the impact and the loading force borne by the limiting rubber body are large, the limiting impact gives off abnormal sound, the high-frequency impact is realized, no buffering energy is released, and the service life of the rubber is further shortened.

To this, this application provides a motor suspension 100, can be based on first limit structure 131 and second limit structure 132 to electric core radial and axial on outer tube 11 carry on spacingly, improve motor suspension 100's performances such as vibration isolation, antitorque spacing, promote motor suspension 100's durability.

Specifically, the outer tube 11 and the inner core 12 are sleeved with each other, the outer tube 11 may be made of nylon, and the inner core 12 may be made of cast aluminum. The elastomer 13 may be vulcanized and fixed between the outer tube 11 and the inner core 12, and the elastomer 13 may include rubber. It can be understood that the inner core 12 is connected to the motor 200, and under the condition that the motor 200 is operated, the inner core 12 may be in collision contact with the elastic body 13, and the elastic body 13 may be elastically deformed when being subjected to an external force, thereby buffering the external force from being transmitted from the inner core 12 to the outer tube 11.

As shown in fig. 1, fig. 1 shows the front and the back of the motor suspension 100, and further, the front of the motor suspension 100 mentioned in this application may be the side connected to the motor 200 by the core 12, and the back of the motor suspension 100 is opposite to the front.

The first limiting structure 131 may limit the inner core 12 in the radial direction of the outer tube 11, and in some embodiments, the radial direction of the outer tube 11 may be the height direction of the vehicle; the second limit structure 132 may limit the axial direction of the inner core 12 in the outer tube 11, and in some embodiments, the axial direction of the outer tube 11 may be the length direction of the vehicle.

It can be understood that the first limiting structure 131 and the second limiting structure 132 are arranged at the same time, so that the radial torsion resistance limiting stability can be improved when the dynamic torque is increased or decreased instantly in the acceleration and deceleration processes of the vehicle; meanwhile, the damping motor 200 excitation frequency resonance is assisted to be improved in the vehicle acceleration and deceleration process, the vibration isolation stability of the axial transmission path is assisted to be improved, the resonance probability generated between the motor suspension 100 and the motor 200 or the vehicle is reduced, and the anti-torsion limiting and vibration isolation stability output is considered.

The first stopper 131 may include a first stopper 1320 and a first stopper 1312, and the first stopper 1310 may be configured to improve torque limiting stability of the inner core 12 in the radial direction of the outer tube 11 when a dynamic torque of the vehicle is increased or decreased momentarily during acceleration and deceleration of the vehicle, so as to reduce a probability that the motor suspension 100 resonates with the connected motor 200 or the vehicle.

The arrangement of the first stopper 1312 can improve the torque limiting stability of the inner core 12 in the radial direction of the outer tube 11 when the dynamic torque of the vehicle is increased or decreased instantaneously during acceleration and deceleration, thereby reducing the probability of resonance between the motor suspension 100 and the connected motor 200 or power device.

The first stopper 1312 may be formed corresponding to the shape of the inner core 12, and the first stopper 1312 may cover the inner core 12 to increase a contact area with the inner core 12. Meanwhile, the first stopper 1312 is disposed in parallel with the first stopper 1310 in the axial direction of the outer tube 11, and the first stopper 1312 couples the outer tube 11 and the inner core 12, so that the stopper of the inner core 12 in the radial direction of the outer tube 11 can be enhanced.

It will be appreciated that the first stopper 1312 is capable of transmitting a force to the first stopper 1312 when the inner core 12 is subjected to the force to move in the radial direction of the outer tube 11, so that the first stopper 1312 is deformed to restrict the movement of the inner core 12 in the radial direction with respect to the outer tube 11 to a certain extent. The arrangement of the first stopper 1312 thus can improve the torque limiting stability of the inner core 12 in the radial direction of the outer tube 11 when the dynamic torque is increased or decreased momentarily during acceleration and deceleration of the vehicle.

It can be appreciated that in some embodiments, the first limiting block 1310 cooperates with the first limiting body 1312 to assist in damping the excitation frequency resonance of the motor 200 during acceleration and deceleration of the vehicle, assist in improving the vibration isolation stability of the radial transmission path of the inner core 12 in the outer tube 11, reduce the probability of the motor suspension 100 resonating with the motor 200 or the vehicle, and take account of the torsional limitation and the vibration isolation stability output.

In addition, an aperture 1314 is formed between the first stopper 1310 and the inner core 12, and the first stopper 1310 can transmit the acting force to the first stopper 1310 when the inner core 12 is moved in the radial direction of the outer tube 11 by the acting force, so that the first stopper 1310 is deformed to limit the movement of the inner core 12 in the radial direction relative to the outer tube 11 to a certain extent. The first stopper 1310 is provided to improve torque-limiting stability of the inner core 12 in the radial direction of the outer tube 11 when the dynamic torque is momentarily increased or decreased during acceleration and deceleration of the vehicle.

Referring to fig. 2 and 4, in some embodiments, the first stopper 1310 has a plurality of first protrusions 1311 on a surface facing the inner core 12. Thus, when the inner core 12 receives an external acting force and moves in the radial direction to contact with the first protrusions 1311, the inner core 12 is in point contact with the first protrusions 1311, so that when the first protrusions 1311 receive the acting force transmitted by the inner core 12, the first protrusions 1311 are more easily deformed, and the vibration isolation effect is better.

Specifically, the plurality of first protrusions 1311 may be spaced apart from the surface of the first stopper 1310 toward the inner core 12, the height of the first protrusions 1311 may be set as desired, and the arrangement of the first protrusions 1311 may reduce the contact area between the inner core 12 and the surface of the first stopper 1310 toward the inner core 12 when the inner core 12 is moved. It can be understood that, under the condition of external acting force, the pressure caused by the same pressure action is higher, the first protrusion 1311 is easier to deform, and the vibration isolation performance of the motor suspension 100 is ensured by absorbing the energy of the vibration of the motor 200 or the vibration of the power device in time.

Referring to fig. 3, in some embodiments, a first through hole 1313 is formed in the first stopper 1312, and the first through hole 1313 penetrates through the first stopper 1312 along the axial direction of the outer tube 11. Thus, the first through hole 1313 can reduce the stiffness of the motor suspension 100, increase the elasticity of the first stopper 1312, and further increase the vibration isolation of the first stopper 1312 compared to the first stopper 1312 forming an integrated structure.

Referring to fig. 3 and 5, in some embodiments, the second limiting structure 132 includes a second limiting block 1320 connected to the inner wall of the outer tube 11, the second limiting block 1320 is located in the first through hole 1313, and the second limiting block 1320 limits the inner core 12 in the axial direction of the outer tube 11.

Thus, the arrangement of the second limiting block 1320 can improve the torque limiting stability of the inner core 12 in the axial direction of the outer tube 11 when the dynamic torque of the vehicle is increased or decreased instantaneously in the acceleration and deceleration processes, thereby reducing the probability that the motor suspension 100 resonates with the connected motor 200 or the vehicle.

Specifically, the second stopper 1320 may include two triangular blocks symmetrically disposed, but may have any other shape in other embodiments. The second stopper 1320 is located in the first through hole 1313, and the second stopper 1320 is connected to the inner wall of the outer tube 11, so that when the inner core 12 is subjected to an external acting force in the axial direction of the outer tube 11 and the inner core 12 moves in the axial direction, the torque of the inner core 12 is transmitted to the second stopper 1320 to deform and stretch the second stopper 1320, thereby limiting the axial movement of the inner core 12 relative to the outer tube 11 to a certain extent. Therefore, the arrangement of the second limiting block 1320 can improve the torque limiting stability of the inner core 12 in the axial direction of the outer tube 11 when the dynamic torque is increased or decreased instantaneously during acceleration and deceleration of the vehicle.

Referring to fig. 4, in some embodiments, the second limiting structure 132 includes a second limiting body 1321, the second limiting body 1321 connects the outer tube 11 and the inner core 12, the second limiting body 1321 and the first limiting block 1310 are disposed at intervals on the same circumference, and the second limiting body 1321 limits the outer tube 11 where the inner core 12 is located in the axial direction.

Thus, the arrangement of the second limiting body 1321 can improve the torque limiting stability of the inner core 12 in the axial direction of the outer tube 11 when the dynamic torque of the vehicle is increased or decreased instantly in the acceleration and deceleration processes, thereby reducing the probability that the motor suspension 100 resonates with the connected motor 200 or the vehicle.

Specifically, the second limiting body 1321 connects the outer tube 11 and the inner core 12, and the arrangement of the second limiting body 1321 can improve the torque limiting stability of the inner core 12 in the axial direction of the outer tube 11 when the dynamic torque of the vehicle is increased or decreased instantaneously in the acceleration and deceleration processes, thereby reducing the probability that the motor suspension 100 resonates with the connected motor 200 or the vehicle.

In the front schematic view of the motor suspension 100, it can be seen that the second limiting body 1321 and the first limiting block 1310 are arranged at intervals on the same circumference, so that the inner core 12 can be limited in the axial direction and the radial direction of the outer tube 11. It will be appreciated that when the inner core 12 is subjected to an external force to axially move relative to the outer tube 11, the torque of the inner core 12 is transmitted to the second stopper 1321, and the second stopper 1321 is deformed and stretched by the torsional force, thereby restricting the axial movement of the inner core 12 relative to the outer tube 11 to some extent. Therefore, the arrangement of the second limiting body 1321 can improve the torque limiting stability of the inner core 12 in the axial direction of the outer tube 11 when the power torque is increased or decreased instantly during the acceleration and deceleration of the vehicle.

It can be understood that, in some embodiments, the second limiting block 1320 and the second limiting body 1321 cooperate to assist in damping the excitation frequency resonance of the motor 200 during the acceleration and deceleration processes of the vehicle, assist in improving the vibration isolation stability of the axial transmission path of the inner core 12 in the outer tube 11, reduce the probability of the motor suspension 100 resonating with the motor 200 or the vehicle, and consider both the anti-torque limiting and the vibration isolation stability output.

Referring to fig. 4, in some embodiments, the second limiting body 1321 is provided with a second through hole 1322, and the second through hole 1322 may penetrate through the second limiting body 1321 through the axial direction of the outer tube 11. Thus, the rigidity of the second stopper 1321 can be reduced, the elasticity of the second stopper 1321 can be improved, and the vibration isolation function of the second stopper 1321 can be improved.

Referring to fig. 6, in some embodiments, the axial end surface 121 of the inner core 12 may have spaced second protrusions 1210. In this manner, friction between the end surface 121 and the structure to which it is attached may be increased. Specifically, in one embodiment, standard fasteners, such as bolts, are connected to the motor 200 through mounting vias of the motor suspension 100. In the tightening fastening torque process, the motor suspension 100 is connected with the motor 200 to form axial spacing, and the axial end surface 121 of the inner core 12 is provided with the second protrusions 1210 arranged at intervals, so that the friction force of the contact surface can be increased, the torsional deformation of the first limiting structure 131 and the second limiting structure 132 can not be caused, the torsional deformation of the elastic body 13 and the stability of dynamic/static rigidity can be ensured, the durability of the elastic body 13 can be improved, and the torsional spacing and vibration isolation performance of the motor suspension 100 can be further ensured. In particular, the second protrusion 1210 of the end surface 121 may be a circular protrusion.

It can be understood that, by arranging the plurality of second protrusions 1210 at intervals on the axial end surface 121 of the inner core 12 to increase friction, compared with the existing anti-twisting snap-gauge or active limiting structure, the structure design is simple, the number of component parts is reduced, and the cost of the component parts is reduced.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A motor suspension, comprising:

an outer tube;

an inner core disposed in the outer tube;

the elastic body is arranged between the outer tube and the inner core and provided with a first limiting structure and a second limiting structure;

first limit structure includes first stopper and first spacing body, first stopper is established the inner wall of outer tube, first spacing body with first stopper is followed the axial of outer tube sets up side by side, first spacing body coupling the outer tube with the inner core contact, first stopper with form the hole between the inner core, first spacing body with first stopper is all right the inner core is in the footpath of outer tube is upwards spacing.

2. The motor suspension of claim 1, wherein the surface of the first stopper facing the inner core is provided with a plurality of first protrusions.

3. The motor suspension of claim 1, wherein the first limiting body is provided with a first through hole, and the first through hole penetrates through the first limiting body along the axial direction of the outer tube.

4. The motor suspension of claim 3, wherein the second limiting structure comprises a second limiting block connected with the inner wall of the outer tube, the second limiting block is located in the first through hole, and the second limiting block limits the inner core in the axial direction of the outer tube.

5. The motor suspension of claim 1, wherein the second limiting structure comprises a second limiting body, the second limiting body is connected with the outer tube and the inner core, the second limiting body and the first limiting block are arranged on the same circumference at intervals, and the second limiting body limits the inner core in the axial direction of the outer tube.

6. The motor suspension of claim 5, wherein the second limiting body is provided with a second through hole, and the second through hole penetrates through the second limiting body along the axial direction of the outer tube.

7. The motor suspension of claim 1, wherein the axial end surface of the inner core has second protrusions spaced apart.

8. A power plant, comprising:

a motor:

the motor suspension of any one of claims 1-7, said inner core being attached to said motor.

9. A vehicle characterized by comprising the power plant of claim 8.

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