Heat insulation assembly, lining assembly and vehicle

Abstract

The utility model provides a heat insulation assembly, a lining assembly and a vehicle, and relates to the technical field of automobile suspension, the heat insulation assembly is used for being installed on the lining assembly, the heat insulation assembly comprises an elastic body and a heat insulation piece connected to the elastic body, the elastic body is used for being arranged on an inner pipe of the lining assembly in a sleeved mode, and the heat insulation piece is connected to the elastic body. The heat insulation part is connected to the outer surface of the side, opposite to the lining assembly, of the elastic body and can cover at least part of the outer surface. According to the heat insulation assembly, the external high-temperature environment can be effectively isolated, heat is prevented from being transmitted to the lining assembly, a multi-layer protection structure can be formed through matched use of the heat insulation piece and the elastic body, and the overall heat insulation effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile suspension, especially relates to a heat insulation assembly, simultaneously, the utility model discloses a bushing assembly with heat insulation assembly and vehicle with the bushing assembly. BACKGROUND

[0002] In the automobile industry, the bushing assembly as the key component connecting the engine and the frame, its main function is to absorb the vibration generated by the engine, to improve the driving comfort and reliability of the vehicle. However, the rubber main spring in the bushing assembly will react with oxygen in the air under long-term high temperature environment, generating peroxide and other by-products, breaking or cross-linking the molecular chain of rubber material, thereby causing changes in physical properties, such as increased hardness, reduced elasticity and decreased tensile strength, resulting in decreased damping performance of the rubber main spring, and further affecting the stability and driving experience of the vehicle.

[0003] The existing bushing assembly on the market usually has a heat shield at the end to prevent high temperature generated by the engine from being transmitted to the rubber main spring. However, the existing heat shield has poor heat insulation performance and poor effect on delaying the aging of the rubber main spring. SUMMARY

[0004] Therefore, the utility model aims at providing a heat insulation assembly to enhance the overall heat insulation effect and further delay the aging process of the rubber main spring.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A heat insulation assembly for mounting on a bushing assembly, the heat insulation assembly comprising an elastic body and a heat insulation piece connected to the elastic body.

[0007] The elastic body is used to be sleeved on the inner tube of the bushing assembly.

[0008] The heat insulation piece is connected to the outer surface of the elastic body away from the bushing assembly and can cover at least part of the outer surface.

[0009] Further, the elastic body comprises a sleeve sleeved on the inner tube and a retaining ring provided on the sleeve, and the elastic body is retained outside the rubber main spring of the bushing assembly by the retaining ring; the elastic body is embedded with a framework, and the framework comprises a support sleeve embedded in the sleeve and a support ring embedded in the retaining ring.

[0010] Further, the inner wall of the sleeve is provided with a plurality of first protrusions, and the plurality of first protrusions are arranged at intervals around the center of the sleeve; and / or, the sleeve and the retaining ring are connected together.

[0011] Further, a plurality of second protrusions are arranged on a side of the blocking ring facing the bushing assembly, and the second protrusions are arranged around the center of the blocking ring; and / or, a limiting part is arranged on the supporting ring, and the limiting part can be arranged on one end of the inner tube to limit the installation position of the heat insulation assembly in the axial direction of the inner tube.

[0012] Further, a plurality of through holes are arranged on the supporting ring, and the through holes are arranged around the center of the supporting ring.

[0013] Further, a plurality of grooves are arranged on a side of the blocking ring facing away from the bushing assembly, and the grooves are arranged around the center of the blocking ring.

[0014] Further, the heat insulation member is annular, and a plurality of third protrusions are arranged on one side of the heat insulation member, and the third protrusions are arranged around the center of the heat insulation member; each of the third protrusions can be embedded in any one of the grooves, and the third protrusions can be embedded in part of the grooves at the same time.

[0015] Further, the elastic body is made of rubber, the thermal resistance of the heat insulation member is greater than the thermal resistance of the elastic body; and / or, at least one of the surface of the framework and the surface of the elastic body is covered with a coating layer for heat insulation.

[0016] Compared with the prior art, the heat insulation assembly has the following advantages:

[0017] The heat insulation assembly connects the heat insulation member to the outer surface of the elastic body on the side facing away from the bushing assembly, and can cover at least part of the outer surface, can effectively insulate the external high-temperature environment, reduce the heat transferred to the bushing assembly, and by using the heat insulation member in cooperation with the elastic body, a multi-layer protection structure is formed, which can further improve the overall heat insulation effect and ensure good heat insulation performance even in an extremely high-temperature environment.

[0018] The sleeve of the elastic body can ensure that the elastic body is correctly installed on the inner tube, the blocking ring on the sleeve can form a physical barrier, can effectively prevent the external high-temperature airflow from directly contacting the rubber main spring, can reduce the heat conduction path, and thus reduce the possibility of heat being directly transmitted to the rubber main spring, the supporting sleeve embedded in the sleeve can improve the reliability of the heat insulation assembly on the inner tube, and the supporting ring embedded in the blocking ring can further enhance the rigidity and stability of the blocking ring.

[0019] And, the inner wall of the sleeve is provided with a plurality of first protrusions, the first protrusions increase the friction between the sleeve and the inner tube, ensure that the sleeve can be firmly fixed on the inner tube, and the plurality of first protrusions uniformly distribute stress, so that local stress concentration is prevented, and the service life of the sleeve and the inner tube is enhanced. The sleeve and the retaining ring are connected together, so that the rigidity of the elastic body is better improved.

[0020] And, the plurality of second protrusions are arranged at intervals around the center of the retaining ring, so that additional contact surfaces are provided when slight axial displacement of the bushing assembly occurs, stress is dispersed and direct friction is reduced, and the problem of frictional noise caused by excessive axial displacement is effectively alleviated.

[0021] The limiting portion is arranged on the supporting ring, and during sleeving of the heat insulation assembly on the inner tube, the limiting portion can be arranged at one end of the inner tube, so that the heat insulation assembly is limited in the axial installation position of the inner tube, and the assembly time of the heat insulation assembly is saved.

[0022] In addition, by arranging the through hole on the supporting ring, the material usage can be significantly reduced, the weight of the entire supporting ring is reduced, and the structural strength of the supporting ring is not affected. The side, away from the bushing assembly, of the retaining ring is provided with a plurality of grooves, the grooves divide the retaining ring into a plurality of small areas, the transmission of heat between the areas is limited, the surface area of the retaining ring is increased, more heat is radiated and dissipated, and the transmission of heat is reduced.

[0023] The heat insulation piece is arranged in a ring shape, heat transmission to the bushing assembly is better prevented, the third protrusions are arranged on the heat insulation piece, the third protrusions are embedded in the grooves, the heat insulation piece can be installed on the elastic body, installation is convenient, the conduction efficiency of heat is significantly reduced, the transmission speed of heat is slowed down, the heat transmitted to the rubber main spring by the automatic force assembly is effectively reduced, the third protrusions are accurately matched with the grooves on the retaining ring, the close connection between the heat insulation piece and the retaining ring is ensured, and the reliability of fixation of the heat insulation piece on the elastic body is improved.

[0024] The elastic body is made of rubber and has certain heat insulation performance, which helps to protect the rubber main spring from high temperature, the thermal resistance of the heat insulation piece is greater than that of the elastic body, heat conduction is effectively prevented, the surface of at least one of the framework and the elastic body is covered with a coating layer for heat insulation, the thermal resistance is effectively increased, the possibility of heat conduction through the framework or the elastic body to the rubber main spring is reduced, and the overall heat insulation performance is further optimized.

[0025] Another purpose of the utility model lies in providing a bushing assembly, which comprises a bushing assembly and a heat insulation assembly as described above.

[0026] In addition, another purpose of the utility model lies in providing a vehicle, which is provided with a bushing assembly as described above.

[0027] The bushing assembly and the vehicle provided with the heat insulation assembly have the advantages that the heat insulation effect on the bushing assembly is enhanced, the aging process of the rubber main spring is delayed, the vehicle has better stability and comfort during driving, and thus the product quality is better. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application. The embodiments of the application and its

[0029] Figure 1 A structure schematic view of the bushing assembly in the application status of the bushing assembly of the first embodiment of the application;

[0030] Figure 2 A sectional view along line A-A in the structure schematic view of the bushing assembly of the first embodiment of the application; Figure 1

[0031] A structure schematic view of the bushing assembly of the first embodiment of the application; Figure 3

[0032] A structure schematic view of the heat insulation assembly of the first embodiment of the application; Figure 4

[0033] A front view of the heat insulation assembly of the first embodiment of the application; Figure 5

[0034] A sectional view along line B-B in the front view of the heat insulation assembly of the first embodiment of the application; Figure 6 Figure 5 A structure schematic view of the framework of the first embodiment of the application;

[0035] Figure 7 A structure schematic view of the elastic body close to the side of the bushing assembly of the first embodiment of the application;

[0036] Figure 8 A structure schematic view of the elastic body away from the side of the bushing assembly of the first embodiment of the application;

[0037] Figure 9 A structure schematic view of the elastic body of the first embodiment of the application;

[0038] Figure 10 A structure schematic view of the heat insulation piece of the first embodiment of the application.

[0039] Figure 11 Explanation of reference signs:

[0040] Explanation of reference signs: ​

[0041] 1, thermal insulation assembly; 2, bushing assembly;

[0042] 101, elastomer; 102, framework; 103, thermal insulation piece;

[0043] 1011, sleeve; 1011a, first protrusion; 1012, retaining ring; 1012a, second protrusion; 1012b, groove;

[0044] 1021, support sleeve; 1022, support ring; 1022a, limiting portion; 1022b, through hole;

[0045] 1031, third protrusion;

[0046] 201, inner tube; 202, rubber main spring; 203, outer tube. DETAILED DESCRIPTION

[0047] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connecting member" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in combination with the specific circumstances.

[0050] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0051] Embodiment one

[0052] In the automobile industry, the bushing assembly as a key component connecting the engine and the frame, its main function is to absorb the vibration generated by the engine, to improve the driving comfort and reliability of the vehicle. However, the rubber main spring in the bushing assembly will react with oxygen in the air under long-term high temperature environment, generating peroxide and other by-products, causing the molecular chain of the rubber material to break or cross-link, thereby causing changes in physical properties, such as increased hardness, reduced elasticity and decreased tensile strength, resulting in a decrease in the damping performance of the rubber main spring, thereby affecting the stability and driving experience of the vehicle.

[0053] Although the existing bushing assembly on the market has certain heat insulation function, due to the limitations of the heat insulation material, and usually a single heat insulation layer design, it is difficult to provide sufficient thermal resistance, especially when the engine is running for a long time or working in a high temperature environment, heat can still penetrate to the rubber main spring relatively quickly, which cannot effectively insulate the high temperature generated by the engine, making the aging problem of the rubber main spring particularly prominent.

[0054] The present embodiment relates to a heat insulation assembly 1 which is suitable for being installed in a bushing assembly 2, and the heat insulation assembly 1 can enhance the overall heat insulation effect by improving its own structure, delay the aging process of the rubber main spring 202, and thereby prolong the service life of the bushing assembly 2.

[0055] In order to solve this problem, new design schemes are constantly explored, and the present embodiment realizes multi-layer protection by improving the structure of the heat insulation assembly 1, which can further improve its heat insulation effect and prolong the service life of the rubber main spring 202 in the bushing assembly.

[0056] As shown in Figures 1 to 6 The heat insulation assembly 1 of the present embodiment is used to be installed on the bushing assembly 2, and the heat insulation assembly 1 comprises an elastic body 101 and a heat insulation piece 103 connected to the elastic body.

[0057] Specifically, in the present embodiment, as a preferred implementation form, the elastic body 101 is used to be sleeved on the inner tube 201 of the bushing assembly 2, and the heat insulation piece 103 is connected to the outer surface of the elastic body away from the bushing assembly 2 and can cover at least part of the outer surface.

[0058] In order to better understand the heat insulation assembly 1 of the present embodiment, first refer to Figures 1 to 3 The structure of the bushing assembly 2 is briefly described. The bushing assembly 2 mainly comprises an inner tube 201 and an outer tube 203 sleeved on the outer tube 201, a gap is provided between the inner tube 201 and the outer tube 203, and a rubber main spring 202 is filled in the gap, and the rubber main spring 202 is connected with the inner tube 201 and the outer tube 203 respectively through a rubber vulcanization process, thereby forming the bushing assembly 2. The bushing assembly 2 can be specifically connected with the power assembly through a connecting piece such as a bolt penetrating through the inner tube 201.

[0059] The aforementioned heat insulation assembly 1 is mounted on the inner tube 201, and in this embodiment, the heat insulation assembly 1 is located at one end of the inner tube 201, between the power assembly and the bushing assembly 2, thereby effectively preventing the heat generated by the power assembly from being transmitted to the bushing assembly 2.

[0060] Specifically, since the heat insulation assembly 1 has the elastic body 101, the elastic body 101 can provide additional buffering and protection during the movement of the outer tube 201 in the bushing assembly 2 along the axial direction of the outer tube 201, thereby reducing the influence of external vibrations on the bushing assembly 2. In addition, the elastic body 101 can also absorb a portion of the heat, thereby reducing the heat directly transmitted to the rubber main spring 202, which helps to maintain the shock-absorbing performance of the bushing assembly 2, thereby improving the driving comfort of the vehicle.

[0061] The heat insulation member 103 is connected to the outer surface of the elastic body 101 on the side away from the bushing assembly 2 and covers at least a portion of the outer surface, which can effectively insulate the external high-temperature environment, thereby reducing the heat transmitted to the bushing assembly 2. Furthermore, by using the heat insulation member 103 in combination with the elastic body 101, a multi-layer protection structure can be formed, which further improves the overall heat insulation effect.

[0062] The heat insulation assembly 1 with the above structure can maintain good heat insulation performance even in an extremely high-temperature environment. By effectively isolating the external high-temperature environment, the aging process of the rubber main spring in the bushing assembly 2 can be significantly slowed down, and the physical property changes (such as increased hardness, reduced elasticity, and decreased tensile strength) caused by high temperature can be reduced, thereby prolonging the overall service life of the bushing assembly 2 and reducing the maintenance frequency and cost.

[0063] It should be noted that the bushing assembly 2 adopts a structure design commonly used by those skilled in the art. The inner tube 201 can be made of, for example, an aluminum alloy and formed by an extrusion or casting process, the rubber main spring 202 is made of natural rubber, and the outer tube 203 can be made of, for example, an aluminum alloy or nylon and formed by an extrusion or injection molding process. The structure and material selection of the above-mentioned bushing assembly 2 are common practices in the industry, and detailed technical details are not described here.

[0064] In this embodiment, as a preferred implementation form, as shown in Figure 1 and Figure 2 The elastic body 101 includes a sleeve 1011 sleeved on the inner tube 201 and a retaining ring 1012 arranged on the sleeve 1011. The elastic body 101 is retained on the rubber main spring 202 of the bushing assembly 2 by the retaining ring 1012, and the elastic body 101 is embedded with a skeleton 102. The skeleton 102 includes a support sleeve 1021 embedded in the sleeve 1011 and a support ring 1022 embedded in the retaining ring 1012.

[0065] As in the above structure, the elastomer 101 includes a sleeve 1011 that is sleeved on the inner tube 201, and the sleeve 1011 enables the heat insulation assembly 1 to closely fit the inner tube 201 of the bushing assembly 2, ensuring correct installation and position fixation, thereby simplifying the installation process. In addition, a retaining ring 1012 is arranged on the sleeve 1011, and the retaining ring 1012 is arranged outside the rubber main spring 202, so that the retaining ring 1012 can form a physical barrier to effectively prevent the heat generated by the power assembly from being directly transmitted to the rubber main spring 202, thereby reducing the heat conduction path.

[0066] The skeleton 102 embedded in the elastomer 101 can enhance the structural strength of the entire elastomer 101, prevent the elastomer 101 from deforming or being damaged in a high-temperature and high-stress environment, and additionally provide additional support to ensure that the elastomer 101 will not be excessively deformed when subjected to vibration, thereby improving the stability and reliability of the heat insulation assembly 1.

[0067] The skeleton 102 is partially composed of a support sleeve 1021 embedded in the sleeve 1011 and a support ring 1022 embedded in the retaining ring 1012. The support sleeve 1021 can provide additional mechanical support for the sleeve 1011, thereby enhancing the structural strength of the sleeve 1011 and preventing the sleeve 1011 from deforming or being damaged in a high-temperature and high-stress environment. The support ring 1022 further enhances the rigidity and stability of the retaining ring 1012, thereby ensuring that the support ring 1022 will not be displaced or deformed during use.

[0068] The presence of the support sleeve 1021 and the support ring 1022 not only enhances the strength of the overall structure, but also enables heat to be uniformly distributed throughout the heat insulation assembly 1, thereby avoiding local high-temperature concentration and helping to reduce the heat directly transmitted to the rubber main spring 202, thereby delaying the aging process of the rubber main spring 202 and thereby prolonging the service life of the bushing assembly 2 and improving the reliability of the bushing assembly 2.

[0069] Specifically, the skeleton 102 is a metal skeleton 102, and the material can be one of sheet metal, aluminum alloy, or titanium alloy, which can be formed by stamping or casting, or a shape memory alloy (SMA). When the ambient temperature changes, the SMA can change its shape according to a preset temperature threshold, thereby dynamically adjusting the support force and the cushioning effect of the bushing assembly. The SMA can restore to its original shape after cooling, and this self-repairing capability helps to prolong the service life of the bushing assembly 2.

[0070] In this embodiment, as a preferred implementation form, as shown in Figures 8 to 10As shown, the inner wall of the sleeve 1011 is provided with a plurality of first protrusions 1011a, which are arranged around the center of the sleeve 1011. After the sleeve 1011 is sleeved on the inner tube 201, the elastic body 101 can be abutted against the outer wall of the inner tube 201 through the plurality of first protrusions 1011a.

[0071] The advantage of such an arrangement is that the first protrusions 1011a can increase the friction between the sleeve 1011 and the inner tube 201 of the bushing assembly 2, ensuring that the sleeve 1011 can be firmly fixed on the inner tube 201, preventing the sleeve 1011 from slipping or shifting during use.

[0072] When the first protrusions 1011a are in contact with the inner tube 201, only the protruding parts are in contact with the inner tube 201, and these protruding parts will undergo slight elastic deformation to adapt to the shape of the inner tube 201. Therefore, the area between adjacent first protrusions 1011a does not directly contact the inner tube 201, and a small air gap can be formed. Reducing the direct contact area between the sleeve 1011 and the inner tube 201 reduces the effective path of heat conduction, significantly reducing the efficiency of heat conduction.

[0073] Moreover, since the thermal resistance of air is greater than that of the elastic body 101, the air filled in these small air gaps can increase the thermal resistance, acting as a barrier in the heat transfer path, slowing down the speed of heat transfer to the rubber main spring 202, further delaying the aging process of the rubber main spring 202.

[0074] The plurality of first protrusions 1011a are arranged around the center of the sleeve 1011, which can uniformly distribute stress inside the sleeve 1011, avoiding local stress concentration, reducing the risk of deformation or damage of the inner tube 201 or the sleeve 1011 due to uneven stress, and enhancing the overall durability and stability.

[0075] Referring to Figure 10 As shown, in the preferred embodiment, the number of first protrusions 1011a is six, and the six first protrusions 1011a are arranged around the axial center line of the sleeve 1011. Moreover, the six first protrusions 1011a are all in the shape of a long strip extending along the axial direction of the sleeve 1011, which can better increase the friction between the sleeve 1011 and the inner tube 201.

[0076] In addition, the number of first protrusions 1011a can also be other numbers, such as two, four, five, etc. The arrangement of the first protrusions 1011a can also be other arrangements, such as a ring shape extending along the circumferential direction of the inner wall of the sleeve 1011, and a plurality of ring-shaped first protrusions 1011a are arranged along the axial direction of the sleeve 1011. The shape of the first protrusions 1011a can also be other shapes, such as a circular shape, a triangular shape, etc.

[0077] As a preferred implementation form, still referring to Figure 2 As shown in the drawings, the sleeve 1011 and the retaining ring 1012 are connected together. In this structure, the design that the sleeve 1011 and the retaining ring 1012 are connected together can further enhance the overall rigidity and stability of the entire thermal insulation assembly 1. It should be understood that the sleeve 1011 and the retaining ring 1012 can also not be connected together.

[0078] In this embodiment, as a preferred implementation form, the sleeve 1011 and the retaining ring 1012 are connected together by Figure 1 、 Figure 2 As shown in the drawings, the sleeve 1011 and the retaining ring 1012 are connected together. In this structure, the design that the sleeve 1011 and the retaining ring 1012 are connected together can further enhance the overall rigidity and stability of the entire thermal insulation assembly 1. It should be understood that the sleeve 1011 and the retaining ring 1012 can also not be connected together. Figures 8 to 10 As shown in the drawings, the side of the retaining ring 1012 facing the bushing assembly 2 is provided with a plurality of second protrusions 1012a, and the plurality of second protrusions 1012a are arranged around the center of the retaining ring 1012.

[0079] In a preferred implementation, the second protrusions 1012a are circular protrusions, and the plurality of second protrusions 1012a are arranged around the center of the retaining ring 1012. These second protrusions 1012a can provide additional contact surfaces when the bushing assembly 2 undergoes slight axial displacement, thereby dispersing stress and reducing direct friction, effectively reducing the problem of frictional noise caused by excessive axial displacement.

[0080] As in this embodiment, the second protrusions 1012a are divided into three groups, and the three groups of second protrusions 1012a are arranged along the radial direction of the retaining ring 1012, and each group of second protrusions 1012a includes a plurality of second protrusions 1012a. The plurality of second protrusions 1012a in each group of second protrusions 1012a are arranged around the center of the retaining ring 1012, which has a good effect of reducing noise.

[0081] It should be understood that the shape of the second protrusions 1012a can of course be other shapes, such as square, oval, etc., and the arrangement can of course be other ways, which are not specifically limited in this embodiment.

[0082] As a preferred implementation form, as shown in the drawings, the retaining ring 1012 is provided with a plurality of second protrusions 1012a, and the plurality of second protrusions 1012a are arranged around the center of the retaining ring 1012. Figure 1 、 Figure 2 、 Figure 6 As shown in the drawings, the side of the retaining ring 1012 facing the bushing assembly 2 is provided with a plurality of second protrusions 1012a, and the plurality of second protrusions 1012a are arranged around the center of the retaining ring 1012. Figure 7 As shown in the drawings, the support ring 1022 is provided with a limiting portion 1022a, and the limiting portion 1022a can be placed at one end of the inner tube 201 to limit the installation position of the thermal insulation assembly 1 in the axial direction of the inner tube 201.

[0083] In the preferred embodiment, the limiting portion 1022a is formed by the inner ring of the support ring 1022, which can be placed on one end of the inner tube 201 during the process of assembling the heat insulation assembly 1 on the inner tube 201, so as to limit the axial installation position of the heat insulation assembly 1 on the inner tube 201. As can be seen, during the installation of the heat insulation assembly 1 on the inner tube 201, the limiting portion 1022a on the support ring 1022 can ensure that the heat insulation assembly 1 is accurately fixed at the predetermined position on the inner tube 201.

[0084] Meanwhile, when the heat insulation assembly 1 is installed on the bushing assembly 2 to form a bushing assembly, the limiting portion 1022a can be clamped between the inner tube 201 and the power assembly during the installation of the bushing assembly on the power assembly, so that the heat insulation assembly 1 can be stably fixed between the power assembly and the bushing assembly 2 through the connecting member penetrating the bushing assembly 2.

[0085] In the embodiment, as a preferred implementation form, as shown in Figure 7 , the support ring 1022 is provided with a plurality of through holes 1022b, which are arranged at intervals around the center of the support ring 1022. By providing the through holes 1022b on the support ring 1022, the amount of material can be significantly reduced, the weight of the entire support ring 1022 can be reduced without affecting the structural strength of the support ring 1022, so as to meet the lightweight design requirement and help improve the fuel economy and power performance.

[0086] In addition, during the process of forming the integral structure of the elastic body 101 and the framework 102 through the vulcanization process, the through holes 1022b can be filled with air through the existing process, and the thermal conductivity of air is much lower than that of metal materials. Therefore, an additional heat insulation layer can be formed, and heat mainly relies on the convection and radiation of gas molecules when passing through these air layers, which are much slower than the conduction in solids, thereby significantly increasing the thermal resistance. It should be understood that, in addition to this, during the process of forming the integral structure of the elastic body 101 and the framework 102 through the vulcanization process, the through holes 1022b can of course be filled with rubber.

[0087] Preferably, the framework 102 can be processed and shaped by one of various ways such as stamping or laser cutting, and the elastic body 101 can be manufactured by one of various processes such as injection molding or compression molding.

[0088] In the embodiment, as a preferred implementation form, as shown in Figure 2 , Figure 6 and Figure 9 , the side of the retaining ring 1012 away from the bushing assembly 2 is provided with a plurality of grooves 1012b, which are arranged at intervals around the center of the retaining ring 1012.

[0089] The groove 1012b provided in the structure can divide the baffle ring 1012 into multiple small areas, prevent heat transfer between the areas, and relatively independently conduct heat in each small area, so as to reduce the heat diffusion speed in the entire elastic body 101, thereby reducing the overall thermal conductivity and effectively delaying heat transfer.

[0090] In addition, the increase of the groove 1012b can also significantly increase the total surface area of the baffle ring 1012, which means that more heat can be dissipated through radiation and convection, thereby improving the heat dissipation efficiency and further delaying heat transfer.

[0091] In the embodiment, the number of grooves 1012b is 12, and it should be understood that the number of grooves 1012b can also be other numbers, such as 4, 6, 8, etc. In a preferred embodiment, the bottom wall of the groove is formed by multiple planes, which can further increase the surface area of the groove 1012b part.

[0092] In a preferred embodiment, the grooves 1012b are connected by multiple arc-shaped grooves, and the multiple arc-shaped grooves between any adjacent grooves 1012b connect the adjacent grooves 1012b, and these arc-shaped grooves are arranged in sequence along the radial direction of the baffle ring 1012, which has a good heat dissipation effect.

[0093] In addition, multiple strip-shaped grooves are also provided between each groove 1012b and the inner wall of the sleeve 1011, the multiple strip-shaped grooves between each groove 1012b and the inner wall of the sleeve 1011 are arranged in parallel, and each strip-shaped groove extends along the radial direction of the baffle ring 1012, which can further increase the heat dissipation effect of the baffle ring 1012.

[0094] It should be noted that the multiple second protrusions 1012a and the multiple grooves 1012b are designed to be asymmetric, which can increase the thermal resistance without affecting the mechanical properties.

[0095] In the embodiment, as a preferred implementation form, as shown in Figure 11 The heat insulating member 103 is annular, and the heat insulating member 103 is provided with multiple third protrusions 1031 on one side, the multiple third protrusions 1031 are arranged at intervals around the center of the heat insulating member 103, each third protrusion 1031 can be embedded in any groove 1012b, and the multiple third protrusions 1031 can be embedded in part of the grooves 1012b at the same time.

[0096] In the embodiment, the number of third protrusions 1031 is four, the shapes of the four third protrusions 1031 are the same, and each third protrusion 1031 can be embedded in any groove 1012b, so that the four third protrusions 1031 can be embedded in the four grooves 1012b at the same time, thereby fixing the heat insulating member 103 on the elastic body 101.

[0097] As shown in the structure above, the fixing heat insulation piece 103 is fixed on the elastic body 101 through the plug-in cooperation of the third protrusions 1031 and the grooves 1012b, and the installation is more convenient. The heat insulation piece 103 can form an additional outer barrier to prevent heat from being directly transmitted from the power assembly to the rubber main spring 202, significantly reduce the conduction efficiency of heat, and delay the transmission speed of heat. Moreover, the precise cooperation of the third protrusions 1031 and the grooves 1012b on the retaining ring 1012 can ensure the close connection between the heat insulation piece 103 and the retaining ring 1012.

[0098] Since the plurality of third protrusions 1031 are simultaneously embedded in the partial grooves 1012b, multi-point fixation is formed, which can increase the friction and contact area between the heat insulation piece 103 and the elastic body 102, and further improve the installation firmness. In addition, a guide surface can be provided on the third protrusions 1031, so that the heat insulation piece 103 is more easily aligned and accurately embedded in the grooves 1012b of the retaining ring 1012 during the installation process, simplifying the installation steps and reducing the possibility of misoperation.

[0099] In this embodiment, as a preferred implementation form, as shown in the structure above, the elastic body 101 is made of rubber, and the thermal resistance of the heat insulation piece 103 is greater than that of the elastic body 101. The elastic body is made of rubber, which has certain heat insulation performance, helps to protect the rubber main spring 202 from high temperature, delays the aging process, prolongs the service life, and the high elasticity and flexibility of the rubber material can effectively absorb and disperse vibration, improving the running stability. Figure 1

[0100] It should be noted that the thermal resistance of the heat insulation piece 103 is greater than that of the elastic body 101, which can effectively prevent the heat of the power assembly from being transmitted to the elastic body 101 and the bushing assembly 2, thereby prolonging the service life of the elastic body 101 and the bushing assembly 2.

[0101] In a preferred implementation form, the heat insulation piece 103 is made of ceramic fiber, which has a very low thermal conductivity (<0.02 W / m·K) and can effectively prevent heat conduction. The ceramic fiber material can provide excellent heat insulation effect in a high temperature environment, forming an effective heat shield to protect the rubber main spring 202 inside the bushing assembly 2 from high temperature. It should be understood that the heat insulation piece 103 can be made of other materials with excellent thermal resistance performance in addition to ceramic fiber, such as foamed ceramic, rock wool, etc.

[0102] As a preferred implementation form, the surface of at least one of the framework 102 and the elastic body 101 is covered with a coating for heat insulation, which can effectively increase the thermal resistance and reduce the possibility of heat conduction through the framework 102 or the elastic body 101 to the rubber main spring 202.

[0103] ​As in the structure above, the thermal insulation coating can form an additional thermal insulation barrier, further optimizing the overall thermal insulation performance. It should be noted that the coating for thermal insulation can be applied to the surface of both the skeleton 102 and the elastomer 101 to optimize the overall thermal insulation performance. The coating can also be provided only on the surface of the skeleton 102, and can also be provided only on the surface of the elastomer 101.

[0104] In a preferred embodiment, the elastomer material is silicone rubber or fluororubber, which is formed by vulcanization, and the coating for thermal insulation can be a thermal barrier coating, such as yttria-stabilized zirconia.

[0105] It should be noted that in addition to yttria-stabilized zirconia, phase change materials (PCM) can also be used. PCM changes from solid to liquid (or vice versa) when it reaches its phase change temperature, absorbing a large amount of heat in the process. PCM is directly exposed to high temperature areas. If the temperature in the engine compartment rises to the phase change temperature of PCM, PCM will start to absorb heat and store heat. Therefore, by using PCM, the heat flow can be actively regulated by heat absorption phase change (latent heat absorption ≥ 200 J / g), thereby reducing the amount of heat transferred to the rubber main spring 202. Of course, other materials with high strength and high heat resistance can also be used, and will not be described in detail here.

[0106] The thermal insulation assembly 1 of the present embodiment can effectively insulate the high temperature environment generated by the power assembly, reduce the amount of heat transferred to the bushing assembly 2, and by using the thermal insulation member 103 in combination with the elastomer 101, a multi-layer protection structure is formed, which can further improve the overall thermal insulation effect and ensure that the thermal insulation assembly 1 can maintain good thermal insulation performance even in extreme high temperature environments.

[0107] Embodiment Two

[0108] The present embodiment relates to a bushing assembly, which includes the bushing assembly 2 and the thermal insulation assembly 1 of embodiment one provided on the bushing assembly 2. The thermal insulation assembly 1 can effectively insulate high temperature, reduce the direct contact between the rubber main spring 202 in the bushing assembly 2 and the high temperature environment, delay the aging process of the rubber main spring 202, and thereby prolong the service life of the bushing assembly.

[0109] Embodiment Three

[0110] The present embodiment relates to a vehicle provided with the bushing assembly of embodiment two. Since the thermal insulation assembly 1 in the bushing assembly has excellent thermal insulation performance, it can ensure that the rubber main spring 202 is worked at an appropriate temperature. The rubber main spring 202 can effectively absorb and disperse vibrations from the engine, reducing the vibrations transmitted to the vehicle frame, thereby significantly improving the driving stability and ride comfort of the vehicle.

[0111] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermal insulation assembly (1) for mounting to a bushing assembly (2), characterized in that: the thermal insulation assembly (1) comprises an elastic body (101) and a thermal insulation member (103) connected to the elastic body; the elastic body (101) is configured to be sleeved on an inner tube (201) of the bushing assembly (2) ; and the thermal insulation member (103) is connected to an outer surface of the elastic body on a side away from the bushing assembly (2) and covers at least part of the outer surface. 2.The thermal insulation assembly (1) according to claim 1, characterized in that: the elastic body (101) comprises a sleeve (1011) sleeved on the inner tube (201) and a retaining ring (1012) arranged on the sleeve (1011), and the elastic body (101) is retained on a rubber main spring (202) of the bushing assembly (2) by the retaining ring (1012) ; and a skeleton (102) is embedded in the elastic body (101), and the skeleton (102) comprises a support sleeve (1021) embedded in the sleeve (1011) and a support ring (1022) embedded in the retaining ring (1012). 3.The thermal insulation assembly (1) according to claim 2, characterized in that: a plurality of first protrusions (1011a) are arranged on an inner wall of the sleeve (1011) and spaced around a center of the sleeve (1011) ; and / or the sleeve (1011) and the retaining ring (1012) are connected together. 4.The thermal insulation assembly (1) according to claim 2, characterized in that: a plurality of second protrusions (1012a) are arranged on a side of the retaining ring (1012) facing the bushing assembly (2) and spaced around a center of the retaining ring (1012) ; and / or a limiting portion (1022a) is arranged on the support ring (1022) and capable of being retained on one end of the inner tube (201) to limit an axial mounting position of the thermal insulation assembly (1) on the inner tube (201). 5.The thermal insulation assembly (1) according to claim 2, characterized in that: a plurality of through holes (1022b) are arranged on the support ring (1022) and spaced around a center of the support ring (1022). 6.The thermal insulation assembly (1) according to claim 5, characterized in that: a plurality of grooves (1012b) are arranged on a side of the retaining ring (1012) away from the bushing assembly (2) and spaced around a center of the retaining ring (1012). 7.The thermal insulation assembly (1) according to claim 6, characterized in that: the thermal insulation member (103) is annular, and a plurality of third protrusions (1031) are arranged on one side of the thermal insulation member (103) and spaced around a center of the thermal insulation member (103). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Each of the third protrusions (1031) is capable of being embedded in any of the grooves (1012b), and a plurality of the third protrusions (1031) are capable of being simultaneously embedded in part of the grooves (1012b).

8. The thermal insulation assembly (1) according to any one of claims 2-7, characterized in that: The elastic body (101) is made of rubber, and the thermal resistance of the thermal insulation member (103) is greater than the thermal resistance of the elastic body (101); and / or, The surface of at least one of the framework (102) and the elastic body (101) is covered with a coating layer for thermal insulation.

9. A bushing assembly, characterized in that: It comprises a bushing assembly (2), and the thermal insulation assembly (1) as claimed in any one of claims 1-8 is arranged on the bushing assembly (2).

10. A vehicle, characterized in that: The vehicle is provided with the bushing assembly as claimed in claim 9.

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