Suspension device and vehicle

Abstract

This utility model provides a suspension device and an automobile. The suspension device includes: a top cover, a hollow shell with an opening on one side for connecting to a subframe, an inner core for connecting a motor, and a first elastic member and a second elastic member made of polyurethane material. The top cover has a first through hole and is fixed to the opening side of the shell. The first and second elastic members are located inside the shell and pressed between the inner bottom wall of the shell and the top cover. The first end of the inner core is located inside the shell, and its outer wall protrudes from the outer wall of the main body. The main body passes through the first through hole, and its second end is located outside the shell. The first elastic member is sleeved on the outer periphery of the main body and the first end, with one end abutting against the top cover and the other end abutting against the second elastic member and the first end. One end of the second elastic member abuts against the first end, and the other end abuts against the inner bottom wall of the shell. This device can isolate motor vibration from being transmitted to the subframe, providing vibration isolation, and achieving a wide range of stiffness adjustment and weight reduction.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle component technology, and specifically relates to a suspension device and automobile. Background Technology

[0002] The powertrain mounting system in a car serves to support the powertrain, isolate its vibrations to reduce their transmission to the vehicle body, and reduce vibrations from the road surface. During vehicle development, the powertrain mounting system is one of the most frequently adjusted and modified components. To meet NVH (noise, vibration, and harshness) and driving performance requirements, the damping materials used in the mounting system need to have a wide range of adjustability. Currently, the main damping material for mounting systems is rubber.

[0003] However, due to the high density of rubber materials, the assembled suspension device is relatively heavy, which is not conducive to installation; and the high-frequency vibration isolation effect of the front suspension device using rubber materials is poor. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the shock-absorbing material of the current suspension device is mainly rubber, which makes the suspension device heavy, difficult to install, and has poor high-frequency vibration isolation effect.

[0005] To solve the above-mentioned technical problems, this utility model discloses a suspension device for fixing a car motor to a subframe, comprising: a top cover, a hollow shell with an opening on one side, an inner core, and a first elastic member and a second elastic member made of polyurethane material; wherein, the shell is fixedly connected to the subframe, the top cover is fixedly connected to the opening side of the shell, and the top cover is provided with a first through hole; the first elastic member and the second elastic member are located inside the shell and are pressed between the inner bottom wall of the shell and the top cover, and are in a compressed state; and, the inner core includes components sequentially connected along its length direction. The device comprises a first end, a main body, and a second end. The outer wall of the first end protrudes beyond the outer wall of the main body and is located inside the housing. The main body passes through a first through hole, and the second end is located outside the housing. The inner core is used for fixed connection to the motor. A first elastic member is sleeved on the outer periphery of the main body and the first end. One end of the first elastic member abuts against the top cover, and the other end abuts against one end of the second elastic member and the end face of the first end near the main body. One end of the second elastic member also abuts against the end face of the first end away from the main body, and the other end abuts against the inner bottom wall of the housing.

[0006] Using the above technical solution, the first and second elastic components of the suspension device are made of polyurethane material and are both in a compressed state. After the motor vibrates, the vibration force is transmitted to the first and second elastic components through the inner core. The first and second elastic components can generate elastic deformation to absorb the vibration force. That is, by utilizing the elasticity and damping characteristics of polyurethane material, it plays the role of isolating the transmission of motor vibration to the subframe. Compared with rubber material, it can achieve a wide range of adjustment of suspension stiffness, improve the vibration isolation effect, and thus meet the increasingly higher NVH performance and driving performance requirements of the whole vehicle. On the other hand, it is also lighter in weight. In addition, the suspension device has a simple structure and is easy to install.

[0007] According to another specific embodiment of the present invention, the suspension device disclosed in this embodiment further includes: a dust cover, the dust cover being made of elastic material, the dust cover being disposed on the outer periphery of the upper cover and located on the side of the upper cover away from the shell, and the dust cover and the upper cover together forming a cavity; the dust cover being provided with a second through hole, the second end of the inner core passing through the second through hole, and the outer wall surface of the second end being fixed and sealed to the wall surface of the second through hole, and the outer periphery of the dust cover being fixed and sealed to the side wall of the shell.

[0008] By adopting the above technical solution, a dust cover is set on the outer periphery of the top cover, and the dust cover is sealed to the inner core and the shell, which plays a role in sealing and dust prevention, preventing water and mud from entering the interior of the shell, thereby avoiding the hydrolysis of the first and second elastic components made of polyurethane material, which would affect the vibration isolation effect of the suspension device.

[0009] According to another specific embodiment of the present invention, in the suspension device disclosed in the embodiment of the present invention, a first connecting hole and a second connecting hole are sequentially arranged along the axial direction inside the first elastic member. The first connecting hole is adapted to the first end, and the second connecting hole is adapted to the main body. The inner wall surface of the second connecting hole protrudes inward from the inner wall surface of the first connecting hole to form a boss. The boss abuts against the end face of the first end near the main body.

[0010] Using the above technical solution, the inner wall surface of the second set of connecting holes of the first elastic member protrudes inward from the inner wall surface of the first set of connecting holes to form a boss. The boss abuts against the end face of the first end near the main body, so that the first end of the inner core can abut against the first elastic member. When the inner core is subjected to vibration force and generates axial movement, it can more conveniently transmit the force to the first elastic member and the second elastic member to generate elastic deformation to absorb vibration, while also preventing the inner core from sliding out of the first elastic member.

[0011] According to another specific embodiment of the present invention, the suspension device disclosed in the embodiment of the present invention has a first elastic member as a first polyurethane spring and a second elastic member as a second polyurethane spring.

[0012] According to another specific embodiment of the present invention, the suspension device disclosed in this embodiment has its upper cover riveted to the housing.

[0013] According to another specific embodiment of the present invention, the suspension device disclosed in the embodiment of the present invention further includes a fastener, a part of which is embedded and fixedly connected to the inner core, and another part extends to the side of the second end of the inner core away from the first end, and the outer wall surface of the other part is provided with an external thread for cooperating with a connector provided with an internal thread to connect the motor, so that the inner core is connected to the motor through the fastener and the connector.

[0014] By adopting the above technical solution, the suspension device is equipped with fasteners that cooperate with the connecting parts with internal threads to achieve a detachable threaded connection with the motor, which is also easy to disassemble in case of failure.

[0015] According to another specific embodiment of the present invention, the suspension device disclosed in this embodiment has a double-ended stud as the fastener, and the double-ended stud is threadedly connected to the inner core.

[0016] According to another specific embodiment of the present invention, the suspension device disclosed in the embodiment of the present invention further includes a first mounting bracket and a second mounting bracket; the first mounting bracket and the second mounting bracket are respectively fixedly connected to both sides of the housing for fixed connection to the subframe, so that the housing is fixedly connected to the subframe through the first mounting bracket and the second mounting bracket.

[0017] By adopting the above technical solution and setting the first mounting bracket and the second mounting bracket, the suspension device can be fixedly connected to the subframe.

[0018] This utility model also discloses an automobile, including: a motor, a subframe, a first suspension device, and a first suspension bracket; the first suspension device adopts the above-mentioned suspension device;

[0019] The inner core of the suspension device is fixedly connected to the first suspension bracket, the first suspension bracket is fixedly connected to the motor, and the housing of the suspension device is fixedly connected to the subframe.

[0020] By adopting the above technical solution, the subframe and the motor are fixedly connected through the suspension device and the first suspension bracket. The elasticity and damping properties of polyurethane material are used to isolate the transmission of motor vibration to the subframe, which can achieve a wide range of adjustment of suspension stiffness, better meet the NVH performance requirements and driving performance requirements of automobiles, and reduce the weight of the suspension device.

[0021] According to another specific embodiment of the present invention, the automobile disclosed in the embodiment of the present invention further includes: a second suspension device and a second suspension bracket, wherein the second suspension device includes an elastic part, and the elastic part is made of rubber.

[0022] The second suspension device is fixedly connected to the motor via a second suspension bracket, and the second suspension device is fixedly connected to the subframe so that the elastic part is located between the motor and the subframe.

[0023] By adopting the above technical solution, and by utilizing the elasticity and damping properties of polyurethane material and the elasticity of rubber material, the function of isolating motor vibration from being transmitted to the subframe can be better achieved.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model provides a suspension device and an automobile. The first and second elastic components of the suspension device are made of polyurethane material and are both in a compressed state. When the inner core receives vibration force due to motor vibration, it can transmit the vibration force to the first and second elastic components. The first and second elastic components can generate elastic deformation to absorb the vibration force. That is, by utilizing the elasticity and damping characteristics of polyurethane material, it plays the role of isolating the transmission of motor vibration to the subframe. Compared with rubber material, it can achieve a wide range of adjustment of suspension stiffness, improve vibration isolation effect, and thus meet the increasingly higher NVH performance and driving performance requirements of the whole vehicle. On the other hand, it is also lighter in weight. Moreover, the suspension device has a simple structure and is easy to install. Attached Figure Description

[0026] Figure 1 This is a partial cross-sectional view of the suspension device provided in Embodiment 1 of this utility model;

[0027] Figure 2 An exploded view of the suspension device provided in Embodiment 1 of this utility model;

[0028] Figure 3 This is a schematic diagram of the connection structure between the motor and the subframe of an automobile provided in Embodiment 2 of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Suspension device (first suspension device); 100. Top cover; 110. First through hole; 200. Housing; 300. Inner core; 310. First end; 320. Main body; 330. Second end; 400. First elastic member; 410. Boss; 500. Second elastic member; 600. Dust cover; 610. Second through hole; 700. Fastener; 800. First mounting bracket; 900. Second mounting bracket; 20. Motor; 30. Subframe; 40. First suspension bracket; 50. Second suspension device; 60. Second suspension bracket. Detailed Implementation

[0031] The powertrain mounting system in a car serves to support the powertrain, isolate its vibrations to reduce their transmission to the vehicle body, and reduce vibrations from the road surface. During vehicle development, the powertrain mounting system is one of the most frequently adjusted and modified components. To meet NVH (noise, vibration, and harshness) and driving performance requirements, the damping materials used in the mounting system need to have a wide range of adjustability. Currently, the main damping material for mounting systems is rubber.

[0032] However, on the one hand, the density of rubber material is relatively high, and the structure of the assembled suspension device is relatively heavy, which is not conducive to installation; on the other hand, the high-frequency vibration isolation effect of rubber material is poor.

[0033] To solve the above-mentioned technical problems, this utility model provides a suspension device and automobile. The elastic component, i.e. the main spring, is made of polyurethane material and is installed in an outer cover with an opening on one side. Then, the elastic component is pressed together with the outer cover by the upper cover and fixedly connected together. Compared with the elastic component made of rubber material, on the one hand, it can realize a wide range of adjustment of suspension stiffness, improve vibration isolation effect, and thus meet the increasingly higher NVH performance and driving performance requirements of the whole vehicle. On the other hand, it is also lighter in weight.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0035] Example 1

[0036] This utility model provides a suspension device 10 for fixing the motor of a car to the subframe, such as... Figure 1 and Figure 2 As shown, the suspension device 10 includes: a top cover 100, a hollow shell 200 with an opening on one side, an inner core 300, and a first elastic member 400 and a second elastic member 500 made of polyurethane material.

[0037] It should be noted that in this embodiment, the first elastic member 400 and the second elastic member 500 can be leaf springs, coil springs, columnar elastic blocks integrally molded from polyurethane material, or other elastic components of various shapes. Made of polyurethane material, it has superior resilience, tear resistance, and abrasion resistance compared to rubber material, and is highly adjustable, allowing for a wide range of adjustments.

[0038] In one embodiment of this utility model, the first elastic member 400 is a first polyurethane spring, and the second elastic member 500 is a second polyurethane spring. It should be noted that the polyurethane spring in this embodiment is similar to a rubber spring, but unlike common springs, it is not helical. Instead, it is a columnar elastic block made of elastic polyurethane material. The specific shape of the elastic block is not specifically limited in this embodiment, and its outer wall can be provided with multiple grooved rings spaced apart along the axial direction, such as... Figure 1 As shown.

[0039] The housing 200 is fixedly connected to the subframe, and the top cover 100 is fixedly connected to the opening side of the housing 200, and the top cover 100 is provided with a first through hole 110; the first elastic member 400 and the second elastic member 500 are located inside the housing 200 and are pressed between the inner bottom wall of the housing 200 and the top cover 100, and are in a compressed state.

[0040] It should be noted that in this embodiment, the fixed connection method includes threaded connections such as bolt connections and screw connections, as well as riveting and welding. In one embodiment of this utility model, the upper cover 100 is riveted to the housing 200. Using the above technical solution, during installation, the first elastic member 400 and the second elastic member 500 are placed inside the housing 200. Only the upper cover 100 and the housing 200 need to be fixedly connected to compress the first elastic member 400 and the second elastic member 500 inside the housing 200, making installation convenient.

[0041] like Figure 1 and Figure 2 As shown, the inner core 300 includes components along its length direction ( Figure 1 The inner core 300 is connected sequentially in a vertical direction to a first end 310, a main body 320, and a second end 330. The outer wall of the first end 310 protrudes beyond the outer wall of the main body 320 and is located inside the housing 200. The main body 320 passes through a first through hole 110, and the second end 330 is located outside the housing 200. The inner core 300 is used for fixed connection to the motor. It should be noted that in this embodiment, the inner core 300 is fixedly connected to the motor housing via the first end 310. The fixed connection method includes, but is not limited to, threaded connection and welding.

[0042] The first elastic member 400 is sleeved on the outer periphery of the main body 320 and the first end 310, and one end of the first elastic member 400 abuts against the top cover 100, and the other end abuts against one end of the second elastic member 500 and the end face of the first end 310 near the main body 320; one end of the second elastic member 500 also abuts against the end face of the first end 310 away from the main body 320, and the other end abuts against the inner bottom wall of the housing 200.

[0043] It should be noted that in this embodiment, the first end 310, the main body 320, and the second end 330 are fixedly connected in sequence. The outer wall surface of the first end 310 protrudes beyond the outer wall surface of the main body 320, so that the first elastic member 400 and the second elastic member 500 respectively abut against the opposite end faces of the first end 310. This ensures that when the inner core 300 undergoes axial movement due to vibration, both the first elastic member 400 and the second elastic member 500 can better withstand the force and generate deformation balance vibration, thereby achieving a vibration isolation effect. The inner bottom wall of the shell 200 refers to the inner wall of the shell 200 away from the opening. Furthermore, the dimension of the outer wall surface of the first end 310 protruding beyond the outer wall surface of the main body 320 needs to be smaller than the diameter of the first elastic member 400 and the second elastic member 500, so that the first elastic member 400 and the second elastic member 500 respectively abut against the opposite end faces of the first end 310. The specific dimensions are not specifically limited in this embodiment.

[0044] It should be further explained that the motor housing and subframe are both made of metal, and polyurethane material has the characteristic that it cannot be reliably bonded to metal parts. In this embodiment, the suspension device 10 is fixedly connected to the motor and subframe through the inner core 300 and the housing 200. The first elastic member 400 and the second elastic member 500, which are made of polyurethane material, are located inside the housing 200 and do not need to be bonded to metal parts, thus overcoming the disadvantage that polyurethane material cannot be reliably bonded to metal materials.

[0045] In this embodiment, the inner core 300 and the housing 200 are respectively fixedly connected to the motor and the subframe, and the inner core 300 and the housing 200 are isolated by a first elastic member 400 and a second elastic member 500. The elasticity and damping properties of the polyurethane material are used to reduce the transmission of motor vibration to the subframe. Specifically, when the motor vibrates, it is transmitted through the inner core 300 to the first elastic member 400 and the second elastic member 500. The elastic deformation of the first elastic member 400 and the second elastic member 500 absorbs the vibration, reducing or preventing vibration of the subframe.

[0046] In one embodiment of this utility model, such as Figure 1 As shown, the suspension device 10 further includes: a dust cover 600, which is made of elastic material. The dust cover 600 covers the outer periphery of the upper cover 100 and is located on the side of the upper cover 100 away from the housing 200. The dust cover 600 and the upper cover 100 together form a cavity. The dust cover 600 is provided with a second through hole 610. The second end 330 of the inner core 300 passes through the second through hole 610. The outer wall surface of the second end 330 is fixed and sealed to the wall surface of the second through hole 610. The outer periphery of the dust cover 600 is fixed and sealed to the side wall of the housing 200.

[0047] It should be noted that in this embodiment, the elastic material can be rubber, or other elastic materials commonly used in the art such as polyolefin elastomers and vinyl elastomers. The dust cover 600 is fixed and sealed to the second end 330 of the inner core 300 and the shell 200 by adhesive bonding. In one specific embodiment, the dust cover 600 is made of rubber (e.g., ethylene propylene diene monomer rubber, EPDM).

[0048] Specifically, the dust cover 600 is sealed to the inner core 300 and the shell 200, providing a dustproof seal and preventing water and sand from entering the interior of the shell 200. This avoids hydrolysis of the first elastic component 400 and the second elastic component 500, made of polyurethane material, which would affect the vibration isolation effect of the suspension device 10. Furthermore, when the motor vibrates, causing the inner core 300 to move, the dust cover 600 moves accordingly. Because the dust cover 600 is made of elastic material and forms a cavity with the top cover 100, it can deform to maintain a sealed connection with the inner core 300 and the shell 200, continuing to provide a dustproof seal.

[0049] In this embodiment, the assembly sequence of the suspension device 10 is as follows: First, the second elastic member 500 is installed into the housing 200, then the inner core 300 is installed into the housing 200. Next, the first elastic member 400 is fitted onto the inner core 300 and installed into the housing 200. The first elastic member 400 and the second elastic member 500 are then pressed together with the upper cover 100 and fixedly connected to the housing 200. Finally, the dust cover 600 is placed over the outer periphery of the upper cover 100 and fixedly connected to the side wall of the housing 200 and the outer wall of the inner core 300. This installation is convenient and quick. It should be noted that the assembled first elastic member 400 and second elastic member 500 are in a compressed state to prevent the inner core 300 from becoming loose and wobbly after creep of the first elastic member 400 and second elastic member 500 made of polyurethane material, or to prevent impact loads from occurring under alternating loads during operation.

[0050] In one embodiment of this utility model, such as Figure 1As shown, the first elastic member 400 has a first connecting hole and a second connecting hole arranged sequentially along the axial direction inside. The first connecting hole is adapted to the first end portion 310, and the second connecting hole is adapted to the main body portion 320. The inner wall surface of the second connecting hole protrudes inward from the inner wall surface of the first connecting hole to form a boss 410. The boss 410 abuts against the end face of the first end portion 310 near the main body portion 320. This allows the first end portion 310 of the inner core 300 to abut against the first elastic member 400. When the inner core 300 is subjected to vibration and undergoes axial movement, it is easier to transmit the force to the first elastic member 400 and the second elastic member 500 to generate elastic deformation and absorb vibration. At the same time, it also prevents the main body portion 320 and the first end portion 310 of the inner core 300 from sliding out of the first elastic member 400.

[0051] In one embodiment of this utility model, such as Figure 1 As shown, the suspension device 10 also includes a fastener 700. A portion of the fastener 700 is embedded and fixedly connected in the inner core 300, and another portion extends to the side of the second end 330 of the inner core 300 away from the first end 310. The outer wall surface of the other portion is provided with an external thread for cooperating with a connector provided with an internal thread to connect the motor, so that the inner core 300 is connected to the motor through the fastener 700 and the connector.

[0052] In this embodiment, a fastener 700 with external threads on its outer wall surface mates with a connector with internal threads, enabling a detachable threaded connection with the motor. This also facilitates disassembly in case of a malfunction. It should be noted that in this embodiment, the fastener 700 can be a single-ended stud, a double-ended stud, or any other component with external threads on one end. The connector can be a nut or any other connector with the same internal threads as a nut.

[0053] In one embodiment of this utility model, the fastener 700 is a double-ended stud, which is threadedly connected to the inner core 300.

[0054] In one embodiment of this utility model, such as Figure 1 As shown, the suspension device 10 also includes a first mounting bracket 800 and a second mounting bracket 900; the first mounting bracket 800 and the second mounting bracket 900 are respectively fixedly connected to both sides of the outer wall of the housing 200 for fixed connection to the subframe, so that the housing 200 is fixedly connected to the subframe through the first mounting bracket 800 and the second mounting bracket 900.

[0055] It should be noted that the first mounting bracket 800 and the second mounting bracket 900 can be as follows: Figure 1The two individual brackets shown can also be a single bracket; the specific structure is not specifically limited in this embodiment, as long as it enables the connection between the housing 200 and the subframe. Furthermore, the fixing connection between the first mounting bracket 800 and the second mounting bracket 900 and the subframe can be a threaded connection, welding, riveting, etc., and this embodiment does not specifically limit this method.

[0056] Example 2

[0057] This utility model also provides a car, such as Figure 3 As shown, it includes: a motor 20, a subframe 30, a first suspension device 10, and a first suspension bracket 40; the first suspension device 10 adopts the suspension device 10 in Embodiment 1; the inner core of the suspension device 10 is fixedly connected to the first suspension bracket 40, the first suspension bracket 40 is fixedly connected to the motor 20, and the housing of the suspension device 10 is fixedly connected to the subframe 30.

[0058] In this way, the motor 20 and the subframe 30 are fixedly connected by the suspension device 10 and the first suspension bracket 40. The elasticity and damping properties of the polyurethane material are used to isolate the vibration of the motor 20 from being transmitted to the subframe 30. This allows for a wide range of adjustment of the suspension stiffness, better meeting the NVH performance requirements and driving performance requirements of the vehicle, and also reducing the weight of the suspension device 10.

[0059] It should be noted that the fixed connection method can be threaded connection, or it can be welding, riveting, or other connection methods.

[0060] In one embodiment of this utility model, the automobile further includes: a second suspension device 50 and a second suspension bracket 60. The second suspension device 50 includes an elastic part made of rubber. The second suspension device 50 is fixedly connected to the motor 20 via the second suspension bracket 60, and the second suspension device 50 is fixedly connected to the subframe 30, so that the elastic part is located between the motor 20 and the subframe 30.

[0061] It should be noted that in this embodiment, the second suspension device 50 can be similar in structure to the suspension device 10 in Embodiment 1, except that the first elastic member and the second elastic member of the suspension device 10 in Embodiment 1 are collectively referred to as the elastic part and replaced with rubber material; the second suspension device 50 can also be a whole rubber block, which is bonded to the second suspension bracket 60 and the subframe 30 respectively; the second suspension device 50 can also be other suspension structures commonly used in the art, as long as the material of the elastic part that generates deformation in the suspension structure is rubber, this embodiment does not make specific restrictions on this.

[0062] It should be further noted that the specific number of the first suspension device 10 and the second suspension device 50 in the automobile can be set by those skilled in the art as needed, such as... Figure 3 As shown, the device has two first suspension devices 10 and one second suspension device 50. The specific installation method of the motor 20 to the subframe 30 is as follows: First, the first suspension devices 10 and the second suspension devices 50 are installed on the subframe 30 respectively. Then, the corresponding first suspension brackets 40 and second suspension brackets 60 are fixedly connected to the motor 20 respectively. After that, the motor 20 is slowly lowered to a suitable position by the hoisting tool. Then, the first suspension bracket 40 is fixedly connected to the first suspension device 10 and the second suspension bracket 60 is fixedly connected to the second suspension device 50, thus completing the installation of the motor 20 to the subframe 30.

[0063] By adopting the above technical solution, the elasticity and damping properties of polyurethane material and the elasticity of rubber material can be utilized simultaneously to better achieve the function of isolating the transmission of vibration from motor 20 to subframe 30.

[0064] It should be noted that polyurethane materials have poor high-temperature resistance. However, in traditional gasoline vehicles, the engine compartment temperature is high during engine operation, and the powertrain mounting point temperature can reach 100 degrees Celsius, which limits the application of polyurethane materials. Pure electric vehicles do not burn fuel and do not emit high-temperature exhaust gases during operation. The operating temperature of the mounting parts is between 60-70 degrees Celsius. Therefore, polyurethane materials are more suitable for electric vehicles.

[0065] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived from the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0066] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0067] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0068] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0069] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or other types of connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0070] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A suspension device, characterized in that, The device for securing the motor of a car to the subframe includes: a top cover, a hollow housing with an opening on one side, an inner core, and a first elastic member and a second elastic member made of polyurethane material; wherein, The housing is fixedly connected to the subframe, and the top cover is fixedly connected to the opening side of the housing, with a first through hole provided on the top cover; the first elastic member and the second elastic member are located inside the housing and pressed between the inner bottom wall of the housing and the top cover, and are in a compressed state; and The inner core includes a first end, a main body, and a second end connected sequentially along its length. The outer wall of the first end protrudes from the outer wall of the main body, and the first end is located inside the housing. The main body passes through the first through hole, and the second end is located outside the housing. The inner core is used for fixed connection to the motor. The first elastic member is sleeved on the outer periphery of the main body and the first end, and one end of the first elastic member abuts against the top cover, and the other end abuts against one end of the second elastic member and the end face of the first end near the main body; one end of the second elastic member also abuts against the end face of the first end away from the main body, and the other end abuts against the inner bottom wall of the housing.

2. The suspension device as described in claim 1, characterized in that, The suspension device further includes: a dust cover, the dust cover being made of an elastic material, the dust cover being disposed on the outer periphery of the upper cover and located on the side of the upper cover away from the housing, and the dust cover and the upper cover together forming a cavity; The dust cover is provided with a second through hole, the second end of the inner core passes through the second through hole, and the outer wall surface of the second end is fixed and sealed to the wall surface of the second through hole. The outer periphery of the dust cover is fixed and sealed to the side wall of the shell.

3. The suspension device as described in claim 1, characterized in that, The first elastic member has a first connecting hole and a second connecting hole arranged sequentially along the axial direction inside. The first connecting hole is adapted to the first end, and the second connecting hole is adapted to the main body. The inner wall surface of the second connecting hole protrudes inward from the inner wall surface of the first connecting hole to form a boss. The boss abuts against one end face of the first end near the main body.

4. The suspension device according to any one of claims 1-3, characterized in that, The first elastic member is a first polyurethane spring, and the second elastic member is a second polyurethane spring.

5. The suspension device according to any one of claims 1-3, characterized in that, The top cover is riveted to the housing.

6. The suspension device according to any one of claims 1-3, characterized in that, The suspension device further includes a fastener, a portion of which is embedded and fixedly connected to the inner core, and another portion extends to the side of the second end of the inner core away from the first end. The outer wall surface of the other portion is provided with an external thread for cooperating with a connector provided with an internal thread to connect the motor, so that the inner core is connected to the motor through the fastener and the connector.

7. The suspension device as described in claim 6, characterized in that, The fastener is a double-ended stud, which is threadedly connected to the inner core.

8. The suspension device according to any one of claims 1-3, characterized in that, The suspension device further includes a first mounting bracket and a second mounting bracket; the first mounting bracket and the second mounting bracket are respectively fixedly connected to both sides of the housing for fixed connection to the subframe, so that the housing is fixedly connected to the subframe through the first mounting bracket and the second mounting bracket.

9. A car, characterized in that, include: Motor, subframe, first suspension device and first suspension bracket; The first suspension device is the suspension device as described in any one of claims 1-8; The inner core of the suspension device is fixedly connected to the first suspension bracket, the first suspension bracket is fixedly connected to the motor, and the housing of the suspension device is fixedly connected to the subframe.

10. The automobile as described in claim 9, characterized in that, The vehicle also includes: a second suspension device and a second suspension bracket, the second suspension device including an elastic part, the elastic part being made of rubber; The second suspension device is fixedly connected to the motor via the second suspension bracket, and the second suspension device is fixedly connected to the subframe, so that the elastic part is located between the motor and the subframe.

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