Vacuum boosting system of vehicle, cabin assembly and vehicle

Abstract

The utility model relates to a cabin assembly of a vehicle and the vehicle, the cabin assembly of the vehicle comprises a vacuum pump assembly, a vacuum energy storage tank, a brake master cylinder and an oil storage pot, the vacuum pump assembly is connected with the vacuum energy storage tank through a first brake vacuum pipe, the brake master cylinder is connected with the vacuum energy storage tank through a second brake vacuum pipe, and the oil storage pot is connected with the vacuum pump assembly. The oil storage pot is connected with the brake master pump through an oil pot connecting pipe; the vacuum pump assembly is arranged in the front area of a cabin of the vehicle, and the front area of the cabin is located on the side, close to a vehicle head of the vehicle, of a cabin shock absorber tower covering area of the vehicle. According to the vacuum boosting system of the vehicle, the cabin assembly and the vehicle, vibration noise generated when the vacuum pump assembly works is not prone to being transmitted into the passenger compartment, and the riding comfort of the passenger compartment is greatly improved.

Description

Technical Field

[0001] This application belongs to the technical field of automotive parts, and particularly relates to a vacuum booster system, an engine compartment assembly and a vehicle of a vehicle. Background Art

[0002] In a traditional automotive braking system, when the driver steps on the brake pedal, the vacuum booster system helps the driver more easily press the brake fluid into the wheel cylinders through the master cylinder, so that the brake pads are pressed against the brake discs, and the vehicle is decelerated by relative friction. Thus, in the braking process, the vacuum booster system plays a very crucial role. Among them, the braking booster system of a traditional fuel vehicle is realized by the negative pressure of the engine intake manifold. Since electric vehicles do not have an engine, a vacuum pump is required to realize braking assistance. The vacuum pump generates a vacuum environment and provides it to the vacuum booster to realize assisted braking, so as to obtain a larger braking force with a smaller pedal force.

[0003] However, the vibration noise generated when the current electric vehicle vacuum booster system works is easily transmitted into the vehicle, resulting in complaints from passengers and crew, and reducing the product competitiveness; moreover, the disassembly, installation and maintenance of the electric vehicle vacuum booster system are inconvenient. Summary of the Utility Model

[0004] The purpose of this application is to provide a vacuum booster system, an engine compartment assembly and a vehicle of a vehicle, which can make the vibration noise generated when the vacuum pump assembly works not easily transmitted into the passenger compartment, and greatly improve the riding comfort of the passenger compartment.

[0005] The first aspect of this application discloses a vacuum booster system of a vehicle, including: a vacuum pump assembly, a vacuum energy storage tank, a master cylinder and an oil storage pot. The vacuum pump assembly is connected to the vacuum energy storage tank through a first brake vacuum tube, the master cylinder is connected to the vacuum energy storage tank through a second brake vacuum tube, and the oil storage pot is connected to the master cylinder through an oil pot connecting tube; wherein, the vacuum pump assembly is arranged in the front area of the engine compartment of the vehicle, and the front area of the engine compartment is located on the side close to the vehicle head in the shock absorber tower package area of the vehicle engine compartment.

[0006] In an exemplary embodiment of this application, both the vacuum energy storage tank and the master cylinder are located in the rear area of the engine compartment, and the rear area of the engine compartment is located on the side close to the vehicle tail in the shock absorber tower package area.

[0007] In an exemplary embodiment of this application, the oil storage pot is located in the middle area of the engine compartment between the rear area and the front area of the engine compartment, and the shock absorber tower package area of the engine compartment is located within the middle area of the engine compartment.

[0008] In an exemplary embodiment of the present application, the vacuum pump assembly includes a vacuum pump main body, a vacuum pump mounting bracket, a first shock absorption assembly, and a second shock absorption assembly. The vacuum pump mounting bracket includes a fixed portion and a mounting portion that are connected to each other. The vacuum pump main body is connected to the mounting portion through the first shock absorption assembly, and the fixed portion is connected to the body reinforcement bracket of the vehicle through the second shock absorption assembly.

[0009] In an exemplary embodiment of the present application, the second shock absorption assembly includes a first shock absorption bushing and a second shock absorption bushing. The fixed portion includes a first fixing plate and a second fixing plate that are both connected to the mounting portion. The first fixing plate is provided with a first mounting point, and the first shock absorption bushings connected to the body reinforcement bracket are provided at the first mounting points; the second fixing plate is provided with a second mounting point, and the second shock absorption bushings connected to the body reinforcement bracket are provided at the second mounting points; wherein, the first mounting point and the second mounting point are located in different planes.

[0010] In an exemplary embodiment of the present application, an angle is formed between the plate surface of the first fixing plate and the plate surface of the second fixing plate, and the angle is an obtuse angle.

[0011] In an exemplary embodiment of the present application, the first fixing plate includes an upper plate surface and a lower plate surface that are oppositely arranged along the height direction of the vehicle; wherein, the vacuum pump mounting bracket further includes a first reinforcing rib and a second reinforcing rib. One end of the first reinforcing rib is connected to the lower plate surface, and the other end of the first reinforcing rib is connected to the mounting portion and is located on the side of the mounting portion close to the lower plate surface; one end of the second reinforcing rib is connected to the upper plate surface, and the other end of the first reinforcing rib is connected to the second fixing plate and is located on the side of the second fixing plate close to the upper plate surface.

[0012] The second aspect of the present application discloses an engine compartment assembly, which includes an engine compartment main body and the above-mentioned vacuum assist system. The engine compartment main body is provided with an engine compartment, and the vacuum assist system is installed in the engine compartment.

[0013] In an exemplary embodiment of the present application, the engine compartment main body includes an engine compartment bottom, a headlight mounting bracket, and a body reinforcement bracket that enclose the engine compartment. The engine compartment bottom and the headlight mounting bracket are spaced apart from each other along the height direction of the vehicle, and the body reinforcement bracket is connected between the engine compartment bottom and the headlight mounting bracket; the vacuum pump assembly is located in the front area of the engine compartment and is connected to the body reinforcement bracket.

[0014] The third aspect of the present application discloses a vehicle, which includes a vehicle frame and the above-mentioned engine compartment assembly, and the engine compartment main body is connected to the vehicle frame.

[0015] The solution of this application has the following beneficial effects:

[0016] In the embodiment of this application, by installing the vacuum pump assembly in the front area of the engine compartment far from the passenger compartment of the vehicle, the vibration noise generated when the vacuum pump assembly works is not easily transmitted into the passenger compartment, greatly improving the riding comfort of the passenger compartment.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Description of the Drawings

[0018] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them, the drawings here are used to represent the inventive concept of this application and are not completely equivalent to the structure of the actual product protected by this application.

[0019] Figure 1 Shows a partial structural schematic diagram of the engine compartment assembly in the embodiment of the present utility model.

[0020] Figure 2 Shows a three-dimensional structural schematic diagram of the vacuum pump mounting bracket in the embodiment of the present utility model.

[0021] Figure 3 Shows a three-dimensional structural schematic diagram of the vacuum pump main body in the embodiment of the present utility model.

[0022] Figure 4 Shows a three-dimensional structural schematic diagram of the vacuum energy storage tank in the embodiment of the present utility model.

[0023] Description of the Reference Numerals:

[0024] 101, Engine room; 101b, Front area of the engine room; 101a, Rear area of the engine room; 101c, Middle area of the engine room; 11, Bottom of the engine room; 111, Engine room floor plate; 112, Longitudinal beam; 12, Side enclosure of the engine room; 13, Headlight mounting bracket; 14, Body reinforcement bracket; 102, Mounting hole; 20, Vacuum pump assembly; 21, Vacuum pump body; 22, Vacuum pump mounting bracket; 221, Fixed part; 2211, First fixing plate; 221a, Upper plate surface; 221b, Lower plate surface; 2212, Second fixing plate; 222, Mounting part; 201, Weight reduction hole; 224, First reinforcing rib; 223, Second reinforcing rib; a, Metal sleeve; b, Shock-absorbing bushing; 30, Vacuum energy storage tank; 31, First brake vacuum tube; 40, Master brake cylinder; 40a, Second brake vacuum tube; 50, Oil storage pot; 50a, Oil pot connecting pipe. Detailed implementation mode

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0026] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be used. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0027] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted here that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0028] This embodiment provides a vehicle, which includes a vehicle frame and an engine room assembly, and the engine room main body is connected to the vehicle frame. Among them, the engine room main body of this embodiment includes an engine room main body and a vacuum booster system.

[0029] Combined with Figures 1 to 4 As shown, the engine room assembly includes an engine room main body, and an engine room 101 is provided inside the engine room main body. The vacuum booster system is installed in the engine room 101.

[0030] Further, the engine compartment 101 includes a front engine compartment area 101b, a rear engine compartment area 101a, and a middle engine compartment area 101c located between the front engine compartment area 101b and the rear engine compartment area 101a. The front engine compartment area 101b is farther from the passenger compartment of the vehicle than the rear engine compartment area 101a. The middle engine compartment area 101c includes an engine compartment shock absorber tower area for installing vehicle shock absorbers.

[0031] Further, as shown in Figure 1 the engine compartment main body includes an engine compartment bottom 11, engine compartment side walls 12, a headlight mounting bracket 13, and a body reinforcement bracket 14 that enclose the engine compartment 101. The engine compartment bottom 11 and the headlight mounting bracket 13 are vertically spaced apart along the height direction of the vehicle. The engine compartment side walls 12 are connected between the engine compartment bottom 11 and the headlight mounting bracket 13. The body reinforcement bracket 14 is connected between the engine compartment bottom 11 and the headlight mounting bracket 13. An installation hole 102 is provided between the engine compartment side walls 12 and the body reinforcement bracket 14. The installation hole 102 is used to install a vehicle lighting module.

[0032] As shown in Figure 1 the vacuum assist system includes a vacuum pump assembly 20, and the vacuum pump assembly 20 is located in the front engine compartment area 101b.

[0033] In the present utility model, by installing the vacuum pump assembly 20 in the front engine compartment area 101b far from the passenger compartment of the vehicle, the vibration noise generated when the vacuum pump assembly 20 operates is not easily transmitted into the passenger compartment and perceived, greatly improving the riding comfort of the passenger compartment.

[0034] Further, the vacuum pump assembly 20 is connected to the body reinforcement bracket 14, which not only ensures its stability but also makes the vacuum pump assembly 20 closer to the edge of the engine compartment 101, thus making maintenance and repair more convenient to operate.

[0035] Further, as shown in Figures 1 to 3 the vacuum pump assembly 20 includes a vacuum pump main body 21 and a vacuum pump mounting bracket 22. The vacuum pump main body 21 is connected to the vacuum pump mounting bracket 22, and the vacuum pump mounting bracket 22 is connected to the body reinforcement bracket 14.

[0036] Further, the vacuum pump assembly 20 further includes a first shock absorption component and a second shock absorption component. The vacuum pump mounting bracket 22 includes a fixing portion 221 and a mounting portion 222. The vacuum pump main body 21 is connected to the mounting portion 222 through the first shock absorption component to play a role in vibration isolation. The mounting portion 222 is connected to the fixing portion 221, and the fixing portion 221 is connected to the body reinforcement bracket 14 of the vehicle through the second shock absorption component to play a role in vibration isolation.

[0037] Further, the second shock absorption assembly includes a first shock absorption bushing and a second shock absorption bushing. The fixing portion 221 includes a first fixing plate 2211 and a second fixing plate 2212 both connected to the mounting portion 222. The first fixing plate 2211 is provided with at least two first mounting points, and both of the two first mounting points are provided with first shock absorption bushings. The first fixing plate 2211 is connected to the vehicle body strengthening bracket 14 through the first shock absorption bushings. The second fixing plate 2212 is provided with a second mounting point, and the second mounting point is provided with a second shock absorption bushing. The second fixing plate 2212 is connected to the vehicle body strengthening bracket 14 through the second shock absorption bushing; wherein, the first mounting point and the second mounting point are located in different planes. In this embodiment, the two first mounting points and the second mounting point are all located in different planes, having the characteristics of reliable and stable installation connection and not being easily loosened. Moreover, the first mounting point is designed with a first shock absorption bushing, and the second mounting point is designed with a second shock absorption bushing, further reducing the risk of the excitation of the vacuum pump main body 21 being transmitted to the vehicle interior.

[0038] For example, as shown in combination with Figure 2 Both the first shock absorption bushing and the second shock absorption bushing include a metal sleeve a and a rubber shock absorption bushing b sleeved on the metal sleeve a. Wherein, the metal sleeve a is installed in the corresponding first mounting point or second mounting point, and then the vacuum pump mounting bracket 22 is connected to the vehicle body strengthening bracket 14 by bolts passing through the metal sleeve a and the vehicle body strengthening bracket 14.

[0039] Further, as shown in combination with Figure 2 An included angle is formed between the plate surface of the first fixing plate 2211 and the plate surface of the second fixing plate 2212, and the included angle is an obtuse angle, so as to facilitate the formation of a cavity between the vacuum pump mounting bracket 22, the headlight mounting bracket 13 and the vehicle body strengthening bracket 14, and further improve the structural stiffness of the mounting point, which is beneficial to enhancing the vibration isolation ability between the vacuum pump mounting bracket 22 and the headlight mounting bracket 13.

[0040] It should be understood that the included angle between the plate surface of the first fixing plate 2211 and the plate surface of the second fixing plate 2212 means: the included angle between the surface of the first fixing plate 2211 along its thickness direction and the surface of the second fixing plate 2212 along its thickness direction. Wherein, if the surfaces of the first fixing plate 2211 and the second fixing plate 2212 along their thickness directions are both curved surfaces, the tangent plane of the curved surface can be taken as the surface along their thickness directions.

[0041] Further, as shown in combination with Figure 2 The first fixing plate 2211 is provided with a weight-reducing hole 201, and the weight-reducing hole 201 is arranged in the area between the two first mounting points for weight reduction and material saving.

[0042] Further, as shown in combination with Figure 2As shown, the first fixing plate 2211 includes an upper plate surface 221a and a lower plate surface 221b that are oppositely arranged along the height direction of the vehicle; wherein, to ensure the dynamic stiffness between the vacuum pump mounting bracket 22 and the vacuum pump main body 21, the vacuum pump mounting bracket 22 further includes a first reinforcing rib 224 and a second reinforcing rib 223. One end of the first reinforcing rib 224 is connected to the lower plate surface 221b, and the other end of the first reinforcing rib 224 is connected to the mounting portion 222 and is located on the side of the mounting portion 222 close to the lower plate surface 221b; one end of the second reinforcing rib 223 is connected to the first upper plate surface 221a, and the other end of the first reinforcing rib 224 is connected to the mounting portion 222 and is located on the side of the mounting portion 222 close to the upper plate surface 221a.

[0043] Furthermore, the vehicle body strengthening bracket 14 is integrally die-cast from an aluminum alloy material, that is, the vehicle body strengthening bracket 14 is an integral aluminum alloy structure.

[0044] In this embodiment, the vehicle body strengthening bracket 14 has a simple structure and strong practicability. Through the integral die-casting of the aluminum alloy material and the design of the weight-reducing holes 201, the relationship between performance and lightweight is fully considered, and the vehicle body strengthening bracket 14 is locally strengthened by the first reinforcing rib 224 and the second reinforcing rib 223, increasing the dynamic stiffness at the mounting points of the vehicle body strengthening bracket 14 and ensuring the vibration isolation ability of the vehicle body strengthening bracket 14.

[0045] Furthermore, in combination with Figure 1 As shown, the bottom of the engine compartment 11 includes an engine compartment bottom plate 111 and a longitudinal beam 112 that is opposite to the driver's seat area of the vehicle along the wheelbase direction of the vehicle. The engine compartment bottom plate 111 is connected to the longitudinal beam 112, the engine compartment side wall portion 12 is connected between the engine compartment bottom plate 111 and the headlight mounting bracket 13, and the vehicle body strengthening bracket 14 is connected between the longitudinal beam 112 and the headlight mounting bracket 13.

[0046] It should be understood that the vehicle body strengthening bracket 14 is connected to the longitudinal beam 112 opposite to the driver's seat, and after the vacuum pump main body 21 is connected to the vehicle body strengthening bracket 14, it is more convenient to arrange the components related to the vacuum pump main body 21.

[0047] Furthermore, in combination with Figure 1 As shown, the engine compartment assembly of the vehicle further includes a vacuum energy storage tank 30 and a first brake vacuum tube 31. The vacuum energy storage tank 30 is located in the rear region 101a of the engine compartment. The vacuum energy storage tank 30 is connected to the vacuum pump main body 21 through the first brake vacuum tube 31 to ensure the normal operation of the vacuum pump main body 21 without changing the position of the vacuum energy storage tank 30.

[0048] In this embodiment, in combination with Figure 4As shown, there are three mounting points designed between the vacuum energy storage tank 30 and the vehicle body. Among them, shock-absorbing bushings b are designed at two main load-bearing positions, and the other non-main load-bearing position is fixed to the engine compartment floor 111 corresponding to the rear area 101a of the engine compartment by bolts, mainly playing a limiting role to prevent the vacuum energy storage tank 30 from falling off under extreme vehicle conditions. Considering that the vacuum energy storage tank 30 is mainly subject to a vertically downward load, the shock-absorbing bushing b is designed in a form with a larger upper part and a smaller lower part, which is more conducive to supporting and fixing the vacuum energy storage tank 30. During disassembly and assembly, it can be removed simply by plugging and unplugging, greatly improving the production assembly and maintenance efficiency.

[0049] Furthermore, in combination with Figure 1 As shown, the engine compartment assembly of the vehicle further includes a master brake cylinder 40 and a second brake vacuum tube 40a. The master brake cylinder 40 is connected to an engine compartment partition (not shown in the figure) corresponding to the rear area 101a of the engine compartment, and the master brake cylinder 40 is connected to the vacuum energy storage tank 30 through the second brake vacuum tube 40a to ensure the normal operation of the master brake cylinder 40 without changing the position of the master brake cylinder 40.

[0050] It should be understood that the engine compartment partition is a partition that separates the passenger compartment and the engine compartment 101.

[0051] Furthermore, in combination with Figure 1 As shown, the engine compartment assembly of the vehicle further includes an oil reservoir 50 and an oil reservoir connecting tube 50a. The oil reservoir 50 is connected to the engine compartment bottom 11 corresponding to the middle area 101c of the engine compartment, that is, the position with high structural stiffness near the shock absorber mounting point. The oil reservoir 50 is connected to the master brake cylinder 40 through the oil reservoir connecting tube 50a to ensure the normal operation of the master brake cylinder 40 without changing the position of the oil reservoir 50.

[0052] In summary, the vacuum pump assembly 20, vacuum energy storage tank 30, master brake cylinder 40, and oil reservoir 50 in the engine compartment assembly of the present utility model are reasonably designed, have a simple structure, are easy to arrange, are convenient for production assembly and maintenance, and are applicable to various types of electric vehicles. At the same time, considering the excitation characteristics of the vacuum pump assembly 20, a two-stage shock-absorbing structure is designed. The excitation energy generated during its operation can be well attenuated through the metal sleeve a and the rubber shock-absorbing bushing b sleeved on the metal sleeve a, and it is far from the passenger compartment, so the vibration and noise are not easily transmitted to the vehicle interior.

[0053] Furthermore, in combination with Figure 3 As shown, the vacuum pump main body 21 is connected to the vacuum pump mounting bracket 22 by using two shock-absorbing bushings b on the left and right. The structure is simple, the disassembly and assembly are convenient, and it is convenient for later maintenance of the vacuum pump main body 21; the bracket is connected to the vehicle body reinforcement bracket 14 by using three shock-absorbing bushings b with shock-absorbing functions, and the deformation of the rubber shock-absorbing bushing b can be fully utilized to attenuate the vibration of the vacuum pump main body 21 and improve the vibration isolation effect.

[0054] Furthermore, the vacuum pump mounting bracket 22 is integrally die-cast from aluminum alloy, which can greatly improve the overall strength, stiffness and modal index of the vacuum pump mounting bracket 22, is not limited by the power and speed of the electric vacuum pump body 21, and the vacuum pump mounting bracket 22 is not likely to resonate with the excitation of the vacuum pump body 21, which is beneficial to improving the NVH performance of the whole vehicle.

[0055] In this application, unless otherwise clearly defined and limited, terms such as "assembly" and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more, unless otherwise specifically defined. And the descriptions of terms such as "some embodiments" and "exemplarily" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application.

[0057] The schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0058] Although the embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as a limitation to this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and the description of this application shall fall within the scope covered by the patent of this application.

Claims

1. A vacuum boost system for a vehicle, characterized in that: It includes: a vacuum pump assembly, a vacuum energy storage tank, a brake master cylinder and an oil storage pot, wherein the vacuum pump assembly is connected to the vacuum energy storage tank through a first brake vacuum pipe, the brake master cylinder is connected to the vacuum energy storage tank through a second brake vacuum pipe, and the oil storage pot is connected to the brake master cylinder through an oil pot connecting pipe; wherein, The vacuum pump assembly is arranged in the front area of ​​the cabin of the vehicle, and the front area of ​​the cabin is located in the cabin shock absorber tower area of ​​the vehicle close to the front side of the vehicle.

2. The vacuum boost system for a vehicle according to claim 1, characterized in that: The vacuum energy storage tank and the master brake cylinder are both located in the rear area of ​​the vehicle's cabin, and the rear area of ​​the cabin is located on the side of the shock absorber tower package area close to the rear of the vehicle.

3. The vacuum boost system for a vehicle according to claim 1, characterized in that: The oil storage pot is located in a middle area of ​​the cabin between a rear area of ​​the cabin and a front area of ​​the cabin of the vehicle, and the cabin shock absorber tower package area is located in the middle area of ​​the cabin.

4. The vacuum boost system for a vehicle according to claim 1, characterized in that: The vacuum pump assembly includes a vacuum pump body, a vacuum pump mounting bracket, a first shock-absorbing assembly and a second shock-absorbing assembly. The vacuum pump mounting bracket includes a fixing portion and a mounting portion that are connected to each other. The vacuum pump body is connected to the mounting portion via the first shock-absorbing assembly, and the fixing portion is connected to the vehicle body reinforcement bracket via the second shock-absorbing assembly.

5. The vacuum boost system for a vehicle according to claim 4, characterized in that: The second shock absorbing assembly includes a first shock absorbing bushing and a second shock absorbing bushing, the fixing portion includes a first fixing plate and a second fixing plate both connected to the mounting portion, the first fixing plate is provided with a first mounting point, the first mounting point is provided with the first shock absorbing bushing connected to the vehicle body reinforcement bracket; the second fixing plate is provided with a second mounting point, the second mounting point is provided with the second shock absorbing bushing connected to the vehicle body reinforcement bracket; Wherein, the first installation point and the second installation point are located in different planes.

6. The vacuum boost system for a vehicle according to claim 5, characterized in that: An angle is formed between the plate surface of the first fixing plate and the plate surface of the second fixing plate, and the angle is an obtuse angle.

7. The vacuum boost system for a vehicle according to claim 5, characterized in that: The first fixing plate includes an upper plate surface and a lower plate surface which are arranged opposite to each other along the height direction of the vehicle; wherein the vacuum pump mounting bracket also includes a first reinforcing rib and a second reinforcing rib, one end of the first reinforcing rib is connected to the lower plate surface, the other end of the first reinforcing rib is connected to the mounting portion, and is located on a side of the mounting portion close to the lower plate surface; one end of the second reinforcing rib is connected to the upper plate surface, the other end of the first reinforcing rib is connected to the second fixing plate, and is located on a side of the second fixing plate close to the upper plate surface.

8. A cabin assembly, characterized in that: It comprises a cabin body and the vacuum assist system according to any one of claims 1 to 7, wherein the cabin body is provided with a cabin chamber, and the vacuum assist system is installed in the cabin chamber.

9. The cabin assembly according to claim 8, characterized in that: The cabin body includes a cabin bottom, a headlight mounting bracket and a body reinforcement bracket that enclose the cabin chamber. The cabin bottom and the headlight mounting bracket are spaced apart vertically along the height direction of the vehicle, and the body reinforcement bracket is connected between the cabin bottom and the headlight mounting bracket; the vacuum pump assembly is located in the front area of ​​the cabin and is connected to the body reinforcement bracket.

10. A vehicle, characterized in that: It comprises a vehicle frame and the cabin assembly according to any one of claims 8 to 9, wherein the cabin body is connected to the vehicle frame.

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