Hydraulic loop pressure stabilizing mechanism and automobile

Abstract

The utility model provides a hydraulic circuit pressure stabilizing mechanism and an automobile, the hydraulic circuit pressure stabilizing mechanism is used for a hydraulic circuit of an electronic stability control system of the automobile, and the hydraulic circuit pressure stabilizing mechanism comprises a mounting base body and a pressure stabilizing assembly arranged on the mounting base body; the pressure stabilizing assembly comprises a pressure stabilizing component, the pressure stabilizing component is arranged on the mounting base body through a base, and an inner cavity of the pressure stabilizing component communicates with the hydraulic loop through the base and the mounting base body; when the pressure of oil in the hydraulic loop is increased, the pressure stabilizing component can elastically expand and accommodate the oil through the inner cavity, and when the pressure of the oil in the hydraulic loop is reduced, the pressure stabilizing component can elastically contract and enable the oil in the inner cavity to flow back to the hydraulic loop. According to the hydraulic circuit pressure stabilizing mechanism, oil can be contained through the pressure stabilizing component, the impact force on a brake terminal when the oil pressure of the oil is too large is reduced, the situation that a brake pedal shakes can be avoided, vehicle braking is more stable and smoother, and the vehicle driving experience can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic braking systems, in particular to a hydraulic circuit voltage stabilizing mechanism. At the same time, the utility model also relates to an automobile provided with the hydraulic circuit voltage stabilizing mechanism. Background Art

[0002] The electronic stability control system (ESC) is a new type of active safety system for automobiles, which is a further expansion of the functions of the ABS (antilock braking system) and TCS (traction control system). On this basis, a yaw rate sensor, a lateral acceleration sensor and a steering wheel angle sensor are added. The ECU (electronic control unit) controls the driving force and braking force of the front, rear, left and right wheels to ensure the lateral stability of the vehicle. Specifically, the electronic control unit is connected to the engine management system to intervene and adjust the engine power output. This system mainly controls the longitudinal and lateral stability of the vehicle to ensure that the vehicle travels according to the driver's intention.

[0003] Moreover, based on the anti-lock braking function of the ABS, the electronic stability control system can continuously brake hundreds of times within one second when the tires are about to lock during braking, similar to mechanical point braking. In this way, when the vehicle is fully braked, the tires can still roll, and the rolling friction effect is better than the sliding friction effect after locking, which can better control the driving direction of the vehicle.

[0004] For example, when the driving tires slip, the system will automatically reduce the intake air volume of the throttle valve and the engine speed in cooperation with the ECU, thereby reducing the power output and braking the slipping driving wheels. This can reduce slipping and maintain the most suitable power output between the tires and the ground grip. At this time, no matter how much fuel is supplied, the driving wheels will not slip, ensuring the lateral stability of the vehicle. At the same time, when the signals of the angle sensor, the lateral acceleration sensor and the wheel speed sensor indicate that the vehicle has understeer or oversteer, the system will control one or more wheels to brake, thereby adjusting the body posture when changing lanes or cornering, making the vehicle more stable and safe when changing lanes or cornering.

[0005] However, when the existing electronic stability control system is in use, there are problems such as a large impact on the terminal pressure when the braking fluid pressure is too high, and the oil pressure of the hydraulic circuit is unstable, which easily causes the brake pedal to shake due to the oil pressure fluctuation, and is not conducive to improving the quality of the vehicle braking system and the driving experience of the passengers. Summary of the Utility Model

[0006] In view of this, the utility model aims to provide a hydraulic circuit voltage stabilizing mechanism, which can have a better voltage stabilizing effect on the hydraulic circuit.

[0007] To achieve the above object, the technical solution of the utility model is realized as follows:

[0008] A hydraulic circuit voltage stabilizing mechanism, used for the hydraulic circuit of an automotive electronic stability control system, includes a mounting base and a voltage stabilizing component provided on the mounting base;

[0009] The voltage stabilizing component includes a voltage stabilizing part. The voltage stabilizing part is provided on the mounting base through a base, and the inner cavity of the voltage stabilizing part is communicated with the hydraulic circuit through the base and the mounting base;

[0010] When the pressure of the oil in the hydraulic circuit increases, the voltage stabilizing part can expand elastically and accommodate the oil in the inner cavity. When the pressure of the oil in the hydraulic circuit decreases, the voltage stabilizing part can contract elastically and make the oil in the inner cavity flow back to the hydraulic circuit.

[0011] Further, a cavity communicated with the hydraulic circuit is provided in the mounting base, and the voltage stabilizing component is located in the cavity.

[0012] Further, an oil hole is provided on the mounting base. The cavity is communicated with the hydraulic circuit through the oil hole, and a through-connected hole is provided on the base. The inner cavity of the voltage stabilizing part is communicated with the cavity through the through-connected hole.

[0013] Further, the aperture of the through-connected hole is smaller than the aperture of the oil hole.

[0014] Further, the cavity includes a connected mounting cavity and a buffer cavity. The voltage stabilizing component is located in the mounting cavity. The oil hole is located on the inner wall of the buffer cavity, and the through-connected hole is communicated with the buffer cavity.

[0015] Further, an opening communicated with the buffer cavity is provided on the mounting base. The opening is for installing the voltage stabilizing component, and a plug is provided at the opening.

[0016] Further, the voltage stabilizing part has a tubular structure with one end open. A press-fitting groove is provided on the base; the open end of the voltage stabilizing part is sleeved in the press-fitting groove and fixed in the mounting cavity through the base.

[0017] Further, the voltage stabilizing part is made of rubber, and a corrugated groove is provided on the outer peripheral wall of the voltage stabilizing part.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] The hydraulic circuit voltage stabilizing mechanism described in the present utility model connects the inner cavity of the voltage stabilizing component to the hydraulic circuit through the base and the mounting base. When the pressure of the oil in the hydraulic circuit increases, the voltage stabilizing component can expand elastically and accommodate the oil in the inner cavity. When the pressure of the oil in the hydraulic circuit decreases, the voltage stabilizing component can contract elastically and return the oil in the inner cavity to the hydraulic circuit, thereby avoiding the problem of large impact on the terminal pressure when the oil is too large, reducing the fluctuation of the oil pressure, improving the shaking situation of the brake pedal, making the vehicle braking more stable and smooth, and being beneficial to the improvement of the overall vehicle quality and the driving experience.

[0020] In addition, the voltage stabilizing component is located in the cavity, and the cavity can be used to limit the expansion amplitude of the voltage stabilizing component, avoid being damaged due to excessive expansion amplitude, and reduce the service life of the voltage stabilizing component. The cavity is connected to the hydraulic circuit through an oil hole, and the inner cavity of the voltage stabilizing component is connected to the cavity through a communication hole. The structure is simple, which is beneficial to the arrangement of the voltage stabilizing component in the mounting base and to ensure the connection between the inner cavity of the voltage stabilizing component and the hydraulic circuit. The aperture of the communication hole is smaller than that of the oil hole, and the throttling effect of the oil hole and the communication hole can be used to reduce the pressure of the oil entering the inner cavity of the voltage stabilizing component, thereby improving the improvement effect on the oil pressure fluctuation in the hydraulic circuit.

[0021] Furthermore, the cavity includes a connected mounting cavity and a buffer cavity. The voltage stabilizing component is located in the mounting cavity, the oil hole is located on the inner wall of the buffer cavity, and the communication hole is connected to the buffer cavity. The throttling effect of the oil hole and the communication hole and the buffering effect of the buffer cavity can be used to buffer the fluctuating oil, effectively reducing the pressure of the oil entering the inner cavity of the voltage stabilizing component. An opening and a plug are provided on the mounting base to facilitate the installation and arrangement of the voltage stabilizing component. A press-fitting groove is provided, which is beneficial to the assembly between the voltage stabilizing component and the base. The voltage stabilizing component is made of rubber, and a corrugated groove is provided on the outer peripheral wall of the voltage stabilizing component, which can make the voltage stabilizing component have better elastic expansion and contraction functions, and the cost is low, which is beneficial to cost reduction.

[0022] Another object of the present utility model is to propose an automobile, in which an automotive electronic stability control system is provided, and the hydraulic circuit of the automotive electronic stability control system is provided with the above-mentioned hydraulic circuit voltage stabilizing mechanism.

[0023] Further, the automotive electronic stability control system includes an integrated valve, at least part of the hydraulic circuit is provided in the integrated valve, and the mounting base is integrated on the valve body of the integrated valve.

[0024] The above-mentioned hydraulic circuit voltage stabilizing mechanism is provided in the automobile described in the present utility model, which can improve the shaking situation of the brake pedal and make the vehicle braking more stable and smooth, thereby being beneficial to the improvement of the overall vehicle quality. Description of the Drawings

[0025] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the hydraulic circuit voltage stabilizing mechanism according to an embodiment of the present utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the voltage stabilizing component according to an embodiment of the present utility model;

[0028] Figure 3 It is a cross-sectional view of the voltage stabilizing component according to an embodiment of the present utility model;

[0029] Figure 4 It is a schematic diagram of the structure of the base according to an embodiment of the present utility model;

[0030] Explanation of reference numerals:

[0031] 1. Installation base; 10. Oil hole; 11. Cavity; 111. Installation cavity; 112. Buffer cavity; 12. Plug;

[0032] 2. Voltage stabilizing component; 21. Voltage stabilizing part; 211. Groove; 22. Base; 221. Communication hole; 222. Press-fitting groove. Detailed implementation manners

[0033] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0034] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are put forward in order to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0035] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0037] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0038] Embodiment 1

[0039] This embodiment relates to a hydraulic circuit voltage stabilizing mechanism for the hydraulic circuit of an automotive electronic stability control system, which can help solve the problem of large impact on the terminal pressure when the oil pressure in the current market electronic stability control system is too high, and improve the problem of brake pedal jitter caused by oil pressure fluctuation.

[0040] In terms of the overall structure, as Figures 1 to 4 shown, the hydraulic circuit voltage stabilizing mechanism of this embodiment includes an installation base 1 and a voltage stabilizing component 2 provided on the installation base 1. The voltage stabilizing component 2 includes a voltage stabilizing part 21. The voltage stabilizing part 21 is provided on the installation base 1 through a base 22, and the inner cavity of the voltage stabilizing part 21 is communicated with the hydraulic circuit through the base 22 and the installation base 1.

[0041] Moreover, when the pressure of the oil in the hydraulic circuit increases, the voltage stabilizing part 21 can expand elastically and accommodate the oil in the inner cavity. When the pressure of the oil in the hydraulic circuit decreases, the voltage stabilizing part 21 can contract elastically and make the oil in the inner cavity flow back to the hydraulic circuit.

[0042] At this time, with the above settings, it can be made that when the pressure of the oil in the hydraulic circuit increases, the voltage stabilizing part 21 can expand elastically and accommodate the oil in the inner cavity. When the pressure of the oil in the hydraulic circuit decreases, the voltage stabilizing part 21 can contract elastically and make the oil in the inner cavity flow back to the hydraulic circuit. Thereby, the fluctuation of the oil pressure can be reduced, the problem of large impact on the terminal pressure when the oil pressure is too high can be avoided, and the situation of brake pedal jitter caused by oil pressure fluctuation can be improved, making the vehicle braking more stable and smooth, and being beneficial to the improvement of the overall vehicle quality and the riding experience.

[0043] Based on the above overall introduction, specifically speaking, in this embodiment, during specific implementation, the hydraulic circuit voltage stabilizing mechanism is particularly applicable to the hydraulic circuit of an automotive electronic stability control system. At this time, the installation base 1 can be integrated on the integrated valve in the automotive electronic stability control system, and at least part of the hydraulic circuit is provided in the integrated valve.

[0044] Continue to refer to Figures 1 to 4 As shown in Figures 1 to 4 , in this embodiment, as a preferred implementation form, a cavity 11 communicating with the hydraulic circuit is provided in the mounting base 1, and the voltage stabilizing assembly 2 is located in the cavity 11. Here, by locating the voltage stabilizing assembly 2 in the cavity 11, the expansion amplitude of the voltage stabilizing component 21 can be limited by the cavity 11, avoiding damage due to excessive expansion amplitude and reducing the service life of the voltage stabilizing assembly 2.

[0045] During specific implementation, in this embodiment, as a preferred implementation form, an oil hole 10 is provided on the mounting base 1. The cavity 11 communicates with the hydraulic circuit through the oil hole 10, and a through-hole 221 is provided on the base 22. The inner cavity of the voltage stabilizing component 21 communicates with the cavity 11 through the through-hole 221. Such a setting can make the structure simple, facilitate the arrangement of the voltage stabilizing assembly 2 in the mounting base 1, and ensure the communication between the inner cavity of the voltage stabilizing component 21 and the hydraulic circuit.

[0046] Moreover, as a preferred setting form, in this embodiment, the aperture of the through-hole 221 is smaller than that of the oil hole 10. The main advantage of such a setting is that the throttling effect of the oil hole 10 and the through-hole 221 can be utilized to reduce the pressure of the oil entering the inner cavity of the voltage stabilizing component 21, thereby improving the effect of improving the pressure fluctuation of the oil in the hydraulic circuit.

[0047] Meanwhile, still referring to Figure 1 As shown in Figure 1 , in this embodiment, as a preferred implementation form, the cavity 11 includes a connected mounting cavity 111 and a buffer cavity 112. The voltage stabilizing assembly 2 is located in the mounting cavity 111, the oil hole 10 is located on the inner wall of the buffer cavity 112, and the through-hole 221 communicates with the buffer cavity 112. Thus, the throttling effect of the oil hole 10 and the through-hole 221, as well as the buffering effect of the buffer cavity 112, can be utilized to buffer the fluctuating oil, effectively reducing the pressure of the oil entering the inner cavity of the voltage stabilizing component 21.

[0048] At this time, as a preferred implementation form, an opening communicating with the buffer cavity 112 is provided on the mounting base 1 of this embodiment. The opening is for installing the voltage stabilizing assembly 2, and a plug 12 is provided at the opening to facilitate the installation and arrangement of the voltage stabilizing assembly 2.

[0049] In addition, continue to refer to Figure 2 and Figure 3 As shown in Figure 3 , in this embodiment, as a preferred implementation form, the voltage stabilizing component 21 has a cylindrical structure with one end open, and a press-fitting groove 222 is provided on the base 22. Specifically, the open end of the voltage stabilizing component 21 is sleeved in the press-fitting groove 222 and fixed in the mounting cavity 111 through the base 22. It can be understood that the provision of the press-fitting groove 222 is conducive to the assembly between the voltage stabilizing component 21 and the base 22.

[0050] It should be noted that in this embodiment, during specific implementation, the base 22 can be arranged in the installation cavity 111 by press-fitting. At the same time, the plug 12 can also be arranged at the opening by press-fitting. That is, first, the voltage stabilizing component 2 is press-fitted into the installation cavity 111 through the base 22, and then the plug 12 is press-fitted at the opening to complete the installation and arrangement of the voltage stabilizing component 2 on the installation base 1.

[0051] Moreover, considering the installation stability of the voltage stabilizing component 21, in this embodiment, if necessary, the inner wall of the installation cavity 111 can be used in cooperation with the base 22 to tightly press one end of the voltage stabilizing component 21 connected to the base 22, which is beneficial to ensuring the installation stability and use reliability of the voltage stabilizing component 21.

[0052] At this time, referring back to Figure 1 As shown, in this embodiment, the cross-sectional dimension of the installation cavity 111 is preferably set to be smaller than the cross-sectional dimension of the buffer cavity 112, which is not only beneficial to the installation of the voltage stabilizing component 2 but also beneficial to forming a stepped buffering effect and reducing the pressure of the oil fluid entering the voltage stabilizing component 21.

[0053] In addition, in this embodiment, as a preferred implementation form, the voltage stabilizing component 21 is made of rubber, and still referring to Figure 2 and Figure 3 as shown, a corrugated groove 211 is provided on the outer peripheral wall of the voltage stabilizing component 21. In this way, the voltage stabilizing component 21 can have better elastic expansion and contraction functions, and the cost is low, which is beneficial to cost reduction.

[0054] In the hydraulic circuit voltage stabilizing mechanism of this embodiment, when the pressure of the oil fluid in the hydraulic circuit increases, the voltage stabilizing component 21 can elastically expand and accommodate the oil fluid in the inner cavity. When the pressure of the oil fluid in the hydraulic circuit decreases, the voltage stabilizing component 21 can elastically contract and return the oil fluid in the inner cavity to the hydraulic circuit, thereby avoiding the problem of large pressure impact of the oil fluid on the terminal, reducing the fluctuation of the oil fluid pressure, improving the jitter of the brake pedal, making the vehicle braking smoother and more stable, and thus facilitating the solution of the problem of large pressure impact of the oil fluid on the braking terminal (brake caliper) under the active supercharging condition of ESC in the current market, and the problem of pedal jitter under the ABS supercharging condition. At the same time, the hydraulic circuit voltage stabilizing mechanism also has the advantages of simple structure, low manufacturing difficulty, and low cost, which is beneficial to cost reduction design of the automotive electronic stability control system and the whole vehicle.

[0055] Embodiment Two

[0056] This embodiment relates to an automobile, in which an automotive electronic stability control system is provided, and the hydraulic circuit of the automotive electronic stability control system is provided with the hydraulic circuit voltage stabilizing mechanism in Embodiment One.

[0057] And, as a preferred implementation form, that is, as described in Embodiment 1, the electronic stability control system of the vehicle in this embodiment includes an integrated valve. At least part of the hydraulic circuit is provided in the integrated valve, and the mounting base 1 is integrated on the valve body of the integrated valve.

[0058] Of course, for the relevant structural parts not mentioned in the electronic stability control system of the vehicle in this embodiment, reference can be made to the various structures of the electronic stability control system well-known to those skilled in the art. For example, it includes components such as a plunger pump, a pressure increasing valve, a pressure releasing valve, a pressure regulating valve, etc., and the hydraulic fluid, that is, the brake fluid well-known to those skilled in the art. Details are not described herein again.

[0059] In the vehicle of this embodiment, under the active boosting condition of the electronic stability control system, when the continuous operation of the plunger pump causes the oil pressure in the main hydraulic circuit to be too high, the pressure stabilizing component 21 will absorb the hydraulic fluid to reduce the pressure of the hydraulic fluid in the hydraulic circuit, so as to achieve the purpose of stabilizing the pressure of the hydraulic circuit and reducing the pressure impact of the pulsed hydraulic pressure of the plunger pump on the brake caliper. At the same time, under the ABS boosting condition, the pressure stabilizing component 21 is responsible for absorbing the pulsed hydraulic fluid and reducing the oil pressure fluctuation in the circuit, thereby reducing the situation of the brake pedal jitter. Thus, the problem of large pressure impact of the hydraulic fluid on the terminal in the current market electronic stability control system and the problem of pedal jitter under the ABS boosting condition can be solved.

[0060] In the vehicle of this embodiment, by setting the hydraulic circuit pressure stabilizing mechanism in Embodiment 1, the pressure stabilizing effect on the hydraulic circuit is more significant, the impact of pressure fluctuation on the terminal is smaller, and the pedal feeling under the ABS condition is better. It can improve the situation of brake pedal jitter, making the vehicle braking more stable and smooth, and thus is beneficial to improving the overall vehicle quality.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic circuit voltage stabilizing mechanism for the hydraulic circuit of an automotive electronic stability control system, characterized in that: It includes an installation base (1) and a voltage stabilizing component (2) provided on the installation base (1); The voltage stabilizing component (2) includes a voltage stabilizing part (21), the voltage stabilizing part (21) is provided on the installation base (1) through a base (22), and the inner cavity of the voltage stabilizing part (21) is communicated with the hydraulic circuit through the base (22) and the installation base (1); When the pressure of the oil in the hydraulic circuit increases, the voltage stabilizing part (21) can expand elastically and accommodate the oil in the inner cavity. When the pressure of the oil in the hydraulic circuit decreases, the voltage stabilizing part (21) can contract elastically and return the oil in the inner cavity to the hydraulic circuit.

2. The hydraulic circuit voltage stabilizing mechanism according to claim 1, characterized in that: A cavity (11) communicated with the hydraulic circuit is provided in the installation base (1), and the voltage stabilizing component (2) is located in the cavity (11).

3. The hydraulic circuit voltage stabilizing mechanism according to claim 2, characterized in that: An oil hole (10) is provided on the installation base (1), the cavity (11) is communicated with the hydraulic circuit through the oil hole (10), and a through-connected hole (221) is provided on the base (22), and the inner cavity of the voltage stabilizing part (21) is communicated with the cavity (11) through the through-connected hole (221).

4. The hydraulic circuit voltage stabilizing mechanism according to claim 3, characterized in that: The aperture of the through-connected hole (221) is smaller than the aperture of the oil hole (10).

5. The hydraulic circuit voltage stabilizing mechanism according to claim 3, characterized in that: The cavity (11) includes a connected installation cavity (111) and a buffer cavity (112), the voltage stabilizing component (2) is located in the installation cavity (111), the oil hole (10) is located on the inner wall of the buffer cavity (112), and the through-connected hole (221) is communicated with the buffer cavity (112).

6. The hydraulic circuit voltage stabilizing mechanism according to claim 5, characterized in that: An opening communicated with the buffer cavity (112) is provided on the installation base (1), the opening is for installing the voltage stabilizing component (2), and a plug (12) is provided at the opening.

7. The hydraulic circuit voltage stabilizing mechanism according to claim 6, characterized in that: The voltage stabilizing part (21) has a tubular structure with one end open, and a press-fitting groove (222) is provided on the base (22); The open end of the voltage stabilizing part (21) is sleeved in the press-fitting groove (222) and fixed in the installation cavity (111) through the base (22).

8. The hydraulic circuit voltage stabilizing mechanism according to claim 7, characterized in that: The voltage stabilizing part (21) is made of rubber, and a corrugated groove (211) is provided on the outer peripheral wall of the voltage stabilizing part (21).

9. An automobile, characterized in that: The vehicle is provided with an electronic stability control system for vehicles, and a hydraulic circuit voltage stabilizing mechanism according to any one of claims 1 to 8 is provided in the hydraulic circuit of the electronic stability control system for vehicles.

10. The vehicle according to claim 9, wherein: The electronic stability control system for vehicles includes an integrated valve, at least part of the hydraulic circuit is provided in the integrated valve, and the mounting base (1) is integrated on the valve body of the integrated valve.

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