CN219487174U - Two-stage vibration isolation suspension assembly and vehicle - Google Patents

Abstract

The application discloses a secondary vibration isolation suspension assembly and a vehicle, wherein the secondary vibration isolation suspension assembly comprises a connecting arm and a suspension body, and the connecting arm can be connected with a power assembly; the suspension body comprises a first elastic piece, a first inner core, a second elastic piece and a suspension framework arranged on the vehicle body, wherein the first elastic piece is connected with the suspension framework, the first elastic piece is connected with the second elastic piece through the first inner core, and the connecting arm is connected with the second elastic piece; the first elastic piece is arranged between the suspension framework and the first inner core, and the second elastic piece is arranged between part of the connecting arm and the first inner core; the first elastic piece and the second elastic piece are elastic, and the elasticity of the first elastic piece and the second elastic piece can be utilized to reduce the vibration quantity; the vibration quantity of the connecting arm is transmitted to the suspension framework after passing through the first elastic piece and the second elastic secondary vibration isolation, so that the vibration amplitude of the suspension framework is reduced, the vibration amplitude of a vehicle body connected with the suspension framework can be reduced, the stability of the vehicle body is improved, and the vibration noise is reduced.

Description

Two-stage vibration isolation suspension assembly and vehicle

Technical Field

The application relates to the technical field of automobiles, in particular to a secondary vibration isolation suspension assembly and a vehicle.

Background

Along with the promotion of national energy conservation and emission reduction policies, environmental protection is increasingly emphasized. When the hybrid motor vehicle adopts hybrid power, the maximum power of the internal combustion engine can be determined according to the average power required; meanwhile, the power of the engine is relatively small, and the engine can be operated under the working conditions of low oil consumption and less pollution; therefore, the hybrid motor vehicle type is more and more popular with consumers.

For the power assembly of the hybrid motor vehicle type, the rotation speed of the driving motor is high, the vibration frequency is high, and the vibration order is large. The automobile has obvious high-order motor vibration and noise under the acceleration working condition and the sliding working condition, and the traditional suspension assembly can not effectively attenuate the vibration of the driving motor.

Disclosure of Invention

The embodiment of the application provides a second-level vibration isolation suspension assembly and a vehicle, which can attenuate vibration and noise of a driving motor.

A first aspect of the present application provides a secondary vibration isolation suspension assembly comprising:

the connecting arm can be connected with the power assembly;

the suspension body comprises a first elastic piece, a first inner core, a second elastic piece and a suspension framework capable of being mounted on a vehicle body, wherein the first elastic piece is connected with the suspension framework, the first elastic piece is connected with the second elastic piece through the first inner core, and the connecting arm is connected with the second elastic piece;

the first elastic piece is arranged between the suspension framework and the first inner core, and the second elastic piece is arranged between part of the connecting arm and the first inner core.

In some embodiments, the suspension skeleton is provided with a mounting groove along a preset direction, and the first elastic piece is sleeved in the mounting groove;

the first elastic piece is provided with a first mounting hole along the preset direction, and the first inner core is sleeved in the first mounting hole and fixedly connected with the inner wall surface of the first mounting hole;

a second mounting hole is formed in the first inner core along the preset direction, and the second elastic piece is sleeved in the second mounting hole and fixedly connected with the inner wall surface of the second mounting hole;

the second elastic piece is provided with a third mounting hole along the preset direction, the connecting arm is provided with a second inner core, and the second inner core is sleeved in the third mounting hole and fixedly connected with the inner wall surface of the third mounting hole.

In some embodiments, the first elastic member and the second elastic member each comprise a rubber body.

In some embodiments, the first elastic member is vulcanization-connected with the suspension frame, the first core is vulcanization-connected with the first elastic member, the second elastic member is vulcanization-connected with the first core, and the second core is vulcanization-connected with the second elastic member.

In some embodiments, the second elastic member is provided in a column shape, an axial direction of the second elastic member is consistent with the preset direction, and a cross section of the second elastic member along a direction perpendicular to the axial direction of the second elastic member includes two semicircles.

In some embodiments, the suspension body further comprises a first bushing fixedly connected with the inner wall surface of the third mounting hole, and the second inner core is inserted into the first bushing; and/or the number of the groups of groups,

the suspension body further comprises a second bushing, the second bushing is fixedly connected with the outer wall surface of the second elastic piece, and the second bushing is inserted into the second mounting hole.

In some embodiments, the suspension body further comprises a base, the base is located in the mounting groove, the first elastic piece is located between the base, the suspension skeleton and the first inner core, and the first elastic piece is fixedly connected with the base, the suspension skeleton and the first inner core respectively.

In some embodiments, the connecting arm further includes a connecting bracket connected to one end of the second inner core, the second inner core is sleeved on the third mounting hole, and the connecting bracket is located at one side of the suspension skeleton;

the suspension body further comprises an elastic limit pad, and the limit pad is arranged on the side wall of the suspension framework and corresponds to the connecting bracket; or, the limit pad is arranged on one side of the connecting support, which is close to the suspension framework.

In some embodiments, the suspension body further comprises a foot mount, the suspension skeleton being connected to the underbody by the foot mount; and/or the number of the groups of groups,

the suspension body still includes foot rest and connecting piece, the suspension skeleton pass through the foot rest with the automobile body bottom is connected, the connecting piece is located the suspension skeleton is kept away from one side of power assembly, just the connecting piece is connected with automobile body lateral part.

A second aspect of the present application provides a vehicle comprising a secondary vibration isolation suspension assembly as described above.

Based on the secondary vibration isolation suspension assembly and the vehicle provided by the application, the secondary vibration isolation suspension assembly comprises a connecting arm and a suspension body, wherein the connecting arm can be connected with the power assembly; the suspension body comprises a first elastic piece, a first inner core, a second elastic piece and a suspension framework arranged on the vehicle body, wherein the first elastic piece is connected with the suspension framework, the first elastic piece is connected with the second elastic piece through the first inner core, and the connecting arm is connected with the second elastic piece; the first elastic piece is arranged between the suspension framework and the first inner core, and the second elastic piece is arranged between part of the connecting arm and the first inner core; the first elastic piece and the second elastic piece are elastic, and the elasticity of the first elastic piece and the second elastic piece can be utilized to reduce the vibration quantity; the vibration quantity of the connecting arm is transmitted to the suspension framework after passing through the first elastic piece and the second elastic secondary vibration isolation, so that the vibration amplitude of the suspension framework can be reduced, the vibration amplitude of a vehicle body connected with the suspension framework can be reduced, the stability of the vehicle body is improved, and the vibration noise is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required 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 application, 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 view of the overall structure of a secondary vibration isolation suspension assembly provided in one embodiment of the present application;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic diagram showing a comparison of the vibration isolation ratio of the primary vibration isolation suspension and the vibration isolation ratio of the secondary vibration isolation suspension in the Z direction of the whole vehicle according to an embodiment of the present application, wherein curve A represents the vibration isolation ratio of the primary vibration isolation suspension assembly; curve B represents the vibration isolation rate of the secondary vibration isolation suspension assembly;

figure 4 is a schematic illustration of another overall construction of a secondary vibration isolation suspension assembly provided in accordance with one embodiment of the present application;

fig. 5 is a schematic diagram of an overall structure of a suspension frame and a spacing pad assembly according to an embodiment of the present application.

Reference numerals illustrate:

10. a connecting arm; 11. a second core; 12. a connecting bracket;

20. a suspension body; 21. a first elastic member; 211. a first mounting hole; 22. a first core; 221. a second mounting hole; 23. a second elastic member; 231. a first member; 232. a second member; 233. a third member; 234. a third mounting hole; 24. suspending the framework; 241. a mounting groove; 25. a base; 26. a limit pad; 27. a foot stand; 28. and a connecting piece.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

Along with the promotion of national energy conservation and emission reduction policies, environmental protection is increasingly emphasized. When the hybrid motor vehicle adopts hybrid power, the maximum power of the internal combustion engine can be determined according to the average power required; meanwhile, the power of the engine is relatively small, and the engine can be operated under the working conditions of low oil consumption and less pollution; therefore, the hybrid motor vehicle type is more and more popular with consumers.

For the power assembly of the hybrid motor vehicle type, the rotation speed of the driving motor is high, the vibration frequency is high, and the vibration order is large. The automobile has obvious high-order motor vibration and noise under the acceleration working condition and the sliding working condition, and the traditional suspension assembly can not effectively attenuate the vibration of the driving motor.

In order to solve the above-mentioned problems, referring to fig. 1 and 2, a first aspect of the present application provides a secondary vibration isolation suspension assembly, which may include a connection arm 10 and a suspension body 20.

The connecting arm 10 can be connected to the powertrain to support the powertrain. The suspension body 20 includes a first elastic member 21, a first core 22, a second elastic member 23, and a suspension frame 24 mounted to the vehicle body, the first elastic member 21 is connected to the suspension frame 24, the first elastic member 21 is connected to the second elastic member 23 through the first core 22, and the connection arm 10 is connected to the second elastic member 23. The first elastic member 21 is disposed between the suspension frame 24 and the first core 22, and the second elastic member 23 is disposed between the first core 22 and the connecting arm 10.

The connecting arm 10 may be connected to the suspension frame 24 sequentially through the first elastic member 21, the first core 22, and the second elastic member 23, and the suspension frame 24 is mounted to the vehicle body. The first elastic member 21 and the second elastic member 23 have elasticity, and the elasticity of the first elastic member and the second elastic member can be utilized to reduce the vibration amount.

Specifically, the first elastic piece 21 is taken as a main body, and the first inner core 22 is connected with the suspension framework 24 through the first elastic piece 21 to form a first-stage vibration isolation system; the second elastic piece 23 is taken as a main body, and the connecting arm 10 is connected with the first inner core 22 through the second elastic piece 23 to form a second-stage vibration isolation system. The first-stage vibration isolation system and the second-stage vibration isolation system form a second-stage vibration isolation. The vibration quantity of the connecting arm 10 is transmitted to the suspension framework 24 through the secondary vibration isolation, so that the vibration amplitude of the suspension framework 24 can be reduced, the vibration amplitude of a vehicle body connected with the suspension framework 24 is further reduced, the stability of the vehicle body is improved, meanwhile, the vibration noise is reduced, and the riding comfort of drivers and passengers is improved.

Please refer to a schematic diagram of the comparison of the vibration isolation rate of the common primary vibration isolation suspension assembly shown in fig. 3 and the vibration isolation rate of the secondary vibration isolation suspension assembly of the present embodiment in the whole vehicle Z direction; wherein, curve A represents the vibration isolation rate of the primary vibration isolation suspension assembly; curve B represents the isolation ratio of the secondary isolation mount assembly. The horizontal axis of the diagram is the rotation speed of the driving motor, the vertical axis is the vibration isolation rate of the suspension assembly, the vibration isolation rate refers to the vibration attenuation rate transmitted from the driving end to the driven end, and the larger the vibration isolation rate is, the better the vibration isolation effect is. Specifically, the vibration damping ratio in this application refers to the damping ratio of vibration transmitted from the link arm 10 to the suspension frame 24.

According to the vibration isolation rate A of the illustrated primary vibration isolation suspension assembly and the vibration isolation rate B of the secondary vibration isolation suspension assembly, the secondary vibration isolation suspension assembly is more common than the primary vibration isolation suspension assembly, so that the vibration isolation rate of the suspension assembly can be remarkably improved under the working conditions of high frequency and high rotating speed, the vibration quantity of a vehicle body connected with the suspension framework 24 is reduced, meanwhile, the vibration noise is reduced, the stability of the vehicle body is improved, and the riding comfort of drivers and passengers is improved.

Further, the power assembly is transversely placed at the head position of the automobile, so that the longitudinal (longitudinal direction can be X direction) length of an engine cabin can be effectively shortened, the space range of a cab is enlarged, and the comfort level of driving the automobile by a driver is improved. Specifically, the extending direction of the vehicle body is taken as the X direction, and the power assembly is transversely arranged at the position of the vehicle head along the Y direction. The connecting arm 10 is connected to the power unit, and then a part of the connecting arm 10 is connected to the second elastic member 23 in the Y direction.

In order to facilitate connection between the connecting arm 10 and the second elastic member 23, please refer to fig. 1 to 2, the second elastic member 23 is provided with a third mounting hole 234 along a preset direction (the preset direction is the Y direction), the connecting arm 10 has a second inner core 11, the second inner core 11 is sleeved in the third mounting hole 234 along the Y direction, the contact area between the second inner core 11 and the inner wall surface of the third mounting hole 234 is increased, and then the vibration force transmitted by the second inner core 11 is transmitted to the second elastic member 23 in a relatively dispersed manner, so that the concentrated stress on the inner wall surface of the third mounting hole 234 can be prevented, the risk of breakage of the second elastic member 23 is reduced, and the service life of the second elastic member 23 is prolonged.

The vibration force transmitted by the second inner core 11 can reduce the vibration quantity of the second inner core 11 through the vibration isolation effect of the second elastic piece 23, and meanwhile, the vibration quantity of the whole formed by the second inner core 11 and the second elastic piece 23 is smaller. Further, the second mounting hole 221 is formed in the first inner core 22 along the Y direction, the second elastic member 23 is mounted in the second mounting hole 221 and is fixedly connected with the inner wall surface of the second mounting hole 221, so that the contact area between the second elastic member 23 and the inner wall surface of the second mounting hole 221 can be increased, the vibration force integrally transferred by the second inner core 11 and the second elastic member 23 can be transferred to the first inner core 22 in a relatively dispersed manner, the inner wall surface of the second mounting hole 221 can be prevented from being stressed intensively, the fracture risk of the first inner core 22 is reduced, and the service life of the first inner core 22 is prolonged.

Further, the first elastic member 21 is provided with a first mounting hole 211 along the Y direction, and the first inner core 22 is mounted in the first mounting hole 211 and fixedly connected to the inner wall surface of the first mounting hole 211, so that the contact area between the first inner core 22 and the inner wall surface of the first mounting hole 211 can be increased; the vibration force integrally transferred by the second inner core 11, the second elastic member 23 and the first inner core 22 can be transferred to the first elastic member 21 in a relatively dispersed manner, so that the concentrated stress on the inner wall surface of the first mounting hole 211 can be prevented, the risk of breakage of the first elastic member 21 is reduced, and the service life of the first elastic member 21 is prolonged.

The vibration force integrally transferred by the second core 11, the second elastic member 23 and the first core 22 is reduced by the vibration isolation of the second elastic member 23, so that the vibration force integrally transferred by the second core 11, the second elastic member 23 and the first core 22 is reduced, and the vibration amount integrally transferred by the second core 11, the second elastic member 23 and the first core 22 is reduced.

Please combine fig. 5, the mounting groove 241 is provided along the preset direction (i.e. the Y direction) to the suspension skeleton 24, the first elastic member 21 is sleeved in the mounting groove 241, so that the contact area between the first elastic member 21 and the inner wall surface of the mounting groove 241 can be increased, the vibration force of the whole transmission formed by the second inner core 11, the second elastic member 23, the first inner core 22 and the first elastic member 21 can be more dispersedly transmitted to the suspension skeleton 24, the concentrated stress on the inner wall surface of the mounting groove 241 can be prevented, the fracture risk of the suspension skeleton 24 is reduced, and the service life of the suspension skeleton 24 is prolonged.

The vibration force transmitted by the power assembly through the secondary vibration isolation is received by the suspension framework 24, the power assembly is connected with the connecting arm 10, the vibration quantity of the connecting arm 10 is transmitted to the suspension framework 24 through the secondary vibration isolation, the vibration amplitude of the suspension framework 24 can be reduced, the vibration amplitude of a vehicle body connected with the suspension framework 24 can be reduced, the stability of the vehicle body is improved, meanwhile, the vibration noise is reduced, and the riding comfort level of drivers and passengers is improved.

Further, the connecting arm 10 further includes a connecting bracket 12 connected to one end of the second inner core 11, and the second inner core 11 is sleeved in the third mounting hole 234; the connecting bracket 12 is positioned on one side of the suspension skeleton 24 and is fixedly connected with the second inner core 11; the connecting bracket 12 extends along the X direction, the first inner core 22 extends along the Y direction, and the connecting bracket 12 and the first inner core 22 form a T-shaped structure; the second inner core 11 is inserted into the third mounting hole 234, and the power assembly is placed on the connecting bracket 12 and fixedly connected with the connecting bracket 12, and the connecting bracket 12 is used for supporting the power assembly.

The connecting bracket 12 and the second inner core 11 can be integrally cast, so that the integrity of the connecting bracket 12 and the second inner core 11 is improved, and the rigidity of the connecting bracket 12 and the second inner core 11 is further improved.

In some embodiments, the connecting bracket 12 and the second inner core 11 may also be connected by bolting, welding, and clamping, and the specific connection method is not limited in this application, and may be set according to actual requirements. Meanwhile, the connection mode between the power assembly and the connecting bracket 12 can be welding, clamping and the like, the application is not limited, and the connection mode can be limited according to actual conditions.

Referring to fig. 4 to 5 in combination with fig. 1, the suspension body 20 further includes an elastic limit pad 26, the limit pad 26 is disposed on a side wall of the suspension frame 24 and corresponds to the connection bracket 12, and when the power assembly moves along the Y direction and collides with the suspension frame 24, the connection bracket 12 abuts against the limit pad 26 disposed on the suspension frame 24, and the limit pad 26 has elasticity to buffer, so as to play a role in vibration reduction and noise reduction.

In some embodiments, the limiting pad 26 may also be disposed on a side of the connecting bracket 12 near the suspension frame 24, and when the power assembly moves along the Y direction and collides with the suspension frame 24, the limiting pad 26 disposed on the connecting bracket 12 abuts against the suspension frame 24, and the limiting pad 26 has elasticity and can perform buffering, so as to play a role in vibration reduction and noise reduction.

Further, in order to improve the vibration isolation performance of the first elastic member 21 and the second elastic member 23, the materials of the first elastic member 21 and the second elastic member 23 may include rubber bodies. The Rubber body may include a Rubber material or a material containing a Rubber material and added with other auxiliary materials, for example, natural Rubber (NR), styrene-butadiene Rubber (SBR), butadiene Rubber (BR-cis-polybutadiene), butyl Rubber (HR), ethylene propylene Rubber (EPDM-Ethylene Propylene Diene Monomer), chloroprene Rubber (CR), and the like.

The rubber has high elasticity of reversible deformation, the elasticity of the rubber is generated by the change of the conformation of a curled molecule, and the interaction between rubber molecules prevents the movement of a molecular chain and shows the characteristic of viscosity; so that the vibration stress of high frequency transmitted from the second core 11 and the strain in the rubber molecule tend to be in an unbalanced state. The long chain molecular structure of this crimp of the rubber and the weak secondary forces present between the molecules; the rubber material has unique viscoelastic performance, so that the rubber material has good vibration reduction, sound insulation and buffering performances.

The rubber is usually vulcanized, and the sulfur content in the rubber is adjusted, so that the rubber has higher elasticity, and the vibration isolation performance of the first elastic member 21 and the second elastic member 23 can be improved by the higher elasticity.

Further, the materials of the first core 22, the second core 11 and the suspension frame 24 may be iron, aluminum or copper, so as to improve the rigidity of the first core 22, the second core 11 and the suspension frame 24, and further improve the stability of the suspension assembly.

The vulcanized first elastic member 21 is connected with the suspension skeleton 24 in a vulcanization manner, so that the connection stability of the first elastic member 21 and the suspension skeleton 24 can be improved, and the integrity of the first elastic member 21 and the suspension skeleton 24 can also be improved. The vulcanized first elastic member 21 and the vulcanized second elastic member 23 are both in vulcanized connection with the first inner core 22, so that the connection stability between the first inner core 22 and the first elastic member 21 and between the first inner core 22 and the second elastic member 23 can be improved, and the integrity of the first inner core 22, the first elastic member 21 and the second elastic member 23 can also be improved; and thus the torsion resistance of the first core 22, the first elastic member 21 and the second elastic member 23 as a whole can be improved to reduce the vibration amount of the suspension assembly.

Meanwhile, the second inner core 11 is in vulcanization connection with the second elastic piece 23, so that the connection stability between the second inner core 11 and the second elastic piece 23 and the integrity between the second inner core 11 and the second elastic piece 23 are improved, and further the torsion resistance between the second inner core 11 and the second elastic piece 23 can be improved, and the vibration quantity of the suspension assembly is reduced.

In some embodiments, among the second core 11, the second elastic member 23, the first core 22, the first elastic member 21, and the suspension skeleton 24, two adjacent components may be connected by a snap connection, and may be set according to practical situations, which is not limited in this application.

In some embodiments, the suspension body 20 further includes a first bushing (not shown in the figures), where the first bushing is fixedly connected to the inner wall surface of the third mounting hole 234, and the second core 11 is inserted into and interference fit with the first bushing, so as to improve the connection stability of the second core 11 and the first bushing; the first bushing is small in size and light in weight, and facilitates the process treatment of the vulcanization connection between the first bushing and the inner wall surface of the third mounting hole 234; further, the second inner core 11 is inserted into the first bushing, so that the connection process of the second inner core 11 and the second elastic piece 23 is simplified, and the connection convenience of the second inner core 11 and the second elastic piece 23 is improved.

Further, the suspension body 20 further includes a second bushing fixedly connected to the outer wall surface of the second elastic member 23, and the second bushing is inserted into the second mounting hole 221.

The first bush and the second bush can be made of steel, and then the first bush and the second bush can be respectively connected with the second elastic piece 23 in a vulcanization mode, the first bush, the second bush and the second elastic piece 23 are connected into a whole to be inserted into the second mounting hole 221 of the first inner core 22, the assembly process among the second inner core 11, the first bush, the second elastic piece 23, the second bush and the first inner core 22 is simplified, and the convenience and the assembly efficiency of assembly are improved.

It should be noted that, the first bushing and the second bushing may be both configured as a straight tube, and the materials of the first bushing and the second bushing may be iron, aluminum, etc., which are not limited in this application, and may be configured according to actual requirements.

Further, by adjusting the torsional rigidity of the first elastic member 21 and the second elastic member 23 about the axis of the second core 11, the structure of the suspension assembly can be protected to improve the service life of the suspension assembly.

Specifically, the second elastic member 23 is inserted into the second mounting hole 221 of the first inner core 22, the mounting space in the second mounting hole 221 is smaller, the variability space of the second elastic member 23 is smaller, and further, the durability of the second vibration isolation is improved, and the service life of the second elastic member 23 is longer.

By adjusting the sulfur content in the second elastic member 23, the torsional rigidity of the second elastic member 23 is reduced so that the torsional rigidity of the second elastic member 23 is lower than that of the first elastic member 21; for example, when the second inner core 11 is deflected by an angle of 10 degrees compared to the suspension frame 24, the torsional stiffness of the second elastic member 23 is lower, the second elastic member 23 can deflect by 7 degrees, while the torsional stiffness of the first elastic member 21 is higher, the first elastic member 21 can deflect by 3 degrees, and the deflection angle of the first elastic member 21 is smaller, so that the risk of breaking the first elastic member 21 can be reduced, the first elastic member 21 is protected, and the service life of the first elastic member 21 is prolonged.

Further, referring to fig. 1, the opening of the second mounting hole 221 may be circular, the second elastic member 23 is columnar, and the second elastic member 23 is inserted into the second mounting hole 221; the axial direction of the second elastic member 23 is consistent with the Y direction, and the cross section of the second elastic member 23 includes two semicircles along the axial direction perpendicular to the second elastic member 23; that is, referring to fig. 2, the second elastic member 23 includes a first member 231, a second member 232 and a third member 233, and the first member 231, the second member 232 and the third member 233 are combined into a column shape so as to be inserted into the second mounting hole 221.

Specifically, the first member 231, the second member 232, and the third member 233 may be sequentially arranged in the Z direction or may be sequentially arranged in the X direction; can set up according to the demand, this application does not do specific limitation.

The second elastic member 23 is usually formed by compression molding, and the sizing material is placed in a mold by means of a female mold and a male mold for heating and forming; the first member 231, the second member 232 and the third member 233 may be separately molded, so that air bubbles and defects inside each member may be effectively prevented, thereby improving the quality of the second elastic member 23 and further ensuring the high elastic property of the second elastic member 23.

Taking the arrangement of the first member 231, the second member 232 and the third member 233 along the Z direction as an example, the second member 232 is provided with the third mounting hole 234, the second inner core 11 is sleeved in the third mounting hole 234 to form a whole with the second member 232, when the vibration force of the second inner core 11 drives the second member 232 to move in position, the gap between the first member 231 and the second member 232 and the gap between the second member 232 and the third member 233 can buffer the whole position movement of the second inner core 11 and the second member 232, so that the vibration isolation performance of the second elastic piece 23 is improved, and the vibration isolation effect of the second elastic piece 23 is improved.

Further, referring to fig. 4 to 5 in combination with fig. 1, the suspension body 20 further includes a base 25, the base 25 is located in the mounting groove 241, and the first elastic member 21 is located between the base 25, the suspension frame 24 and the first inner core 22 and is fixedly connected with the base 25, the suspension frame 24 and the first inner core 22 respectively; the base 25 is connected with the first elastic member 21, and can support the first elastic member 21, so as to improve the stability of the first elastic member 21 among the base 25, the suspension frame 24 and the first inner core 22. Meanwhile, a wiring channel can be formed in the base 25, so that the base 25 can be prevented from blocking wiring, and the convenience of wiring is improved.

Referring to fig. 4 to 5, the suspension body 20 further includes a foot rest 27, and the suspension frame 24 is connected to the underbody through the foot rest 27; and simultaneously, the contact area between the foot rest 27 and the bottom of the vehicle body is increased, so that the stability of the support suspension framework 24 of the foot rest 27 is improved. It should be noted that, the foot stand 27 is screwed with the underbody, so as to facilitate the disassembly between the suspension body 20 and the underbody.

The two groups of the foot seats 27 can be arranged at intervals along the X direction, and the two groups of the foot seats 27 form a bridge-shaped structure, so that the stability of the foot seats 27 on the support of the suspension body 20 is improved; in an alternative embodiment, three sets of the foot bases 27 may be disposed, wherein two sets of the foot bases are disposed at intervals along the X direction, the other set of the foot bases is disposed at a middle position of the two sets of the foot bases 27 along the X direction and is disposed at intervals with the two sets of the foot bases 27 along the Y direction, and the three sets of the foot bases 27 form a triangle structure, so that the stability of the support of the foot bases 27 to the suspension body 20 can be further improved.

In order to further improve the stability of the suspension body 20, the suspension body 20 may include two sets of the foot seats 27 as an example, and the two sets of the foot seats 27 form a bridge structure, and the suspension skeleton 24 is connected with the bottom of the vehicle body through the foot seats 27, so as to improve the stability of the foot seats 27 on the support of the suspension body 20; the connecting piece 28 is positioned on one side of the suspension framework 24 away from the power assembly, one end of the connecting piece 28 is connected with one end of the suspension framework 24 away from the bottom of the vehicle body, and the other end is connected with the side part of the vehicle body; furthermore, the two sets of the foot bases 27 and the connecting piece 28 can also form a triangular supporting structure, so that the stability of the support of the foot bases 27 and the connecting piece to the suspension body 20 can be improved.

Based on the same concept, the second aspect of the present application provides a vehicle, which includes the secondary vibration isolation suspension assembly described above, the power assembly is connected to the connecting arm 10, and the connecting arm 10 is connected to the suspension frame 24 through the first elastic member 21 and the second elastic member 23.

The vibration quantity of the connecting arm 10 is transferred to the suspension skeleton 24 through the secondary vibration isolation effect of the first elastic piece 21 and the second elastic piece 23, so that the vibration amplitude of the suspension skeleton 24 can be reduced, the vibration amplitude of a vehicle body connected with the suspension skeleton 24 can be further reduced, the stability of the vehicle body is improved, meanwhile, the vibration noise is reduced, and the riding comfort of drivers and passengers is improved.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The foregoing disclosure is only illustrative of the preferred embodiments of the present application and is not intended to limit the scope of the claims herein, as the equivalent of the claims herein shall be construed to fall within the scope of the claims herein.

Claims (10)

1. A secondary vibration isolation suspension assembly, comprising:

the connecting arm can be connected with the power assembly;

the suspension body comprises a first elastic piece, a first inner core, a second elastic piece and a suspension framework capable of being mounted on a vehicle body, wherein the first elastic piece is connected with the suspension framework, the first elastic piece is connected with the second elastic piece through the first inner core, and the connecting arm is connected with the second elastic piece;

the first elastic piece is arranged between the suspension framework and the first inner core, and the second elastic piece is arranged between part of the connecting arm and the first inner core.

2. The secondary vibration isolation suspension assembly of claim 1 wherein,

the suspension framework is provided with a mounting groove along a preset direction, and the first elastic piece is sleeved in the mounting groove;

the first elastic piece is provided with a first mounting hole along the preset direction, and the first inner core is sleeved in the first mounting hole and fixedly connected with the inner wall surface of the first mounting hole;

a second mounting hole is formed in the first inner core along the preset direction, and the second elastic piece is sleeved in the second mounting hole and fixedly connected with the inner wall surface of the second mounting hole;

the second elastic piece is provided with a third mounting hole along the preset direction, the connecting arm is provided with a second inner core, and the second inner core is sleeved in the third mounting hole and fixedly connected with the inner wall surface of the third mounting hole.

3. The secondary vibration isolation suspension assembly of claim 2 wherein,

the first elastic piece and the second elastic piece both comprise rubber bodies.

4. The secondary vibration isolation suspension assembly of claim 3 wherein,

the first elastic piece with the suspension skeleton is vulcanized and is connected, first inner core with first elastic piece is vulcanized and is connected, the second elastic piece with first inner core is vulcanized and is connected, the second inner core with the second elastic piece is vulcanized and is connected.

5. The secondary vibration isolation suspension assembly of claim 3 wherein,

the second elastic piece is arranged in a columnar shape, the axial direction of the second elastic piece is consistent with the preset direction, and the section of the second elastic piece comprises two semicircles along the axial direction perpendicular to the second elastic piece.

6. The secondary vibration isolation suspension assembly of claim 2 wherein,

the suspension body further comprises a first bushing, the first bushing is fixedly connected with the inner wall surface of the third mounting hole, and the second inner core is inserted into the first bushing; and/or the number of the groups of groups,

the suspension body further comprises a second bushing, the second bushing is fixedly connected with the outer wall surface of the second elastic piece, and the second bushing is inserted into the second mounting hole.

7. The secondary vibration isolation suspension assembly of claim 2 wherein,

the suspension body still includes the base, the base is located in the mounting groove, first elastic component is located the base the suspension skeleton with between the first inner core, just first elastic component respectively with the base the suspension skeleton and first inner core fixed connection.

8. The secondary vibration isolation suspension assembly of claim 2 wherein,

the connecting arm further comprises a connecting bracket connected with one end of the second inner core, the second inner core is sleeved in the third mounting hole, and the connecting bracket is positioned on one side of the suspension framework;

the suspension body further comprises an elastic limit pad, and the limit pad is arranged on the side wall of the suspension framework and corresponds to the connecting bracket; or, the limit pad is arranged on one side of the connecting support, which is close to the suspension framework.

9. The secondary vibration isolation suspension assembly of claim 1 wherein,

the suspension body further comprises a foot seat, and the suspension framework is connected with the bottom of the vehicle body through the foot seat; and/or the number of the groups of groups,

the suspension body still includes foot rest and connecting piece, the suspension skeleton pass through the foot rest with the automobile body bottom is connected, the connecting piece is located the suspension skeleton is kept away from one side of power assembly, just the connecting piece is connected with automobile body lateral part.

10. A vehicle is characterized in that,

a secondary vibration isolation suspension assembly comprising any of claims 1-9.