Pipeline buffer of hydraulic braking system

Abstract

A hydraulic brake system pipeline buffer is arranged on a pipeline between a main cylinder and a hydraulic ABS, and when the hydraulic ABS starts a pressure adjusting device, pressure maintaining, pressure reducing and pressure increasing control over a brake cylinder is achieved through the action of an electromagnetic valve. During brake pressure reduction, an oil return pump works to pump brake fluid into the space between a high-pressure energy accumulator and a main cylinder, and the pressure fluctuation of a brake pipeline is increased through repeated actions of oil suction and oil injection in the oil pumping process, so that hydraulic impact, vibration and noise are generated in the pipeline, and the impact, vibration and noise in the pipeline are absorbed through the effect of a pipeline buffer; and the safety and the stability of the ABS brake system can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a pipeline buffer of a hydraulic brake system. Background Art

[0002] As new energy vehicles become more and more popular, in the absence of fuel engine noise, the overall noise requirements for electronic control braking products are getting higher and higher. The industry requires the overall operating noise of hydraulic ABS to be increased from ≤70dB(A) to ≤60dB(A). The noise generated by the existing hydraulic ABS during operation is difficult to meet the comfort experience of all drivers. Summary of the Invention

[0003] In view of this, the utility model provides a pipeline buffer for a hydraulic brake system.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A hydraulic brake system pipeline buffer includes a buffer assembly and a mounting bracket, wherein the buffer assembly is arranged on the mounting bracket, and the buffer assembly includes a master cylinder oil pipe connector, a buffer pad, a damper and an ABS oil pipe connector. The ABS oil pipe connector is arranged at one end of the master cylinder oil pipe connector, a first oil channel is opened on the master cylinder oil pipe connector, one end of the ABS oil pipe connector extends into the first oil channel and has an interference fit with the master cylinder oil pipe connector, the buffer pad and the damper are arranged on one side of the first oil channel close to the ABS oil pipe connector, the two ends of the damper are respectively connected to the buffer pad and the ABS oil pipe connector, and the damper has a clearance fit with the ABS oil pipe connector.

[0006] Preferably, the damper is provided with a central oil hole and a number of auxiliary oil holes distributed at equal intervals with the central oil hole as the center. The diameter of the central oil hole is 1 mm, and the diameter of the auxiliary oil holes is 1.5 mm. The central oil hole and the auxiliary oil holes are both connected to the first oil channel.

[0007] Preferably, a plurality of oil grooves are provided at equal intervals on the side surface of the damper.

[0008] Preferably, a chamfer is provided on one end of the damper close to the ABS oil pipe connector, and the inclination direction of the chamfer is that the outer wall of the damper is inclined toward the lower part of the central axis of the ABS oil pipe connector.

[0009] Preferably, a buffer mounting hole is provided on the mounting bracket, and the ABS oil pipe connector in the buffer assembly is fixed to the hole wall of the buffer mounting hole by welding.

[0010] Preferably, the edge of the mounting bracket is bent toward the master cylinder oil pipe connecting piece.

[0011] The utility model discloses the beneficial effect lies in: pipeline buffer is arranged on the pipeline between main cylinder and hydraulic ABS, when hydraulic ABS starts pressure regulating device, through the action of electromagnetic valve to realize the pressure maintaining, pressure reducing and pressure increasing control of brake master cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, below in the description of the drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0013] ATTACHMENT Figure 1 It is the structure exploded schematic view of the utility model;

[0014] ATTACHMENT Figure 2 It is the main cylinder oil pipe connecting piece, buffer pad, damper and ABS oil pipe connection section view;

[0015] ATTACHMENT Figure 3 It is the damper structure schematic view. DETAILED DESCRIPTION

[0016] Below, combining with the drawing in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment only is a part of the embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor are within the scope of the utility model protection.

[0017] Below, combining with the drawing of specification, the utility model will be further described.

[0018] The utility model provides the following technical scheme:

[0019] Such as the drawing of Figure 1-3As shown, the utility model discloses a pipeline buffer for a hydraulic brake system, comprising a buffer assembly and a mounting bracket 1, wherein the buffer assembly is arranged on the mounting bracket 1, and the buffer assembly comprises a master cylinder oil pipe connector 2, a buffer pad 3, a damper 4, and an ABS oil pipe connector 5. The ABS oil pipe connector 5 is arranged at one end of the master cylinder oil pipe connector 2, and a first oil passage 6 is formed on the master cylinder oil pipe connector 2. One end of the ABS oil pipe connector 5 extends into the first oil passage 6 and has an interference fit with the master cylinder oil pipe connector 2. The buffer pad 3 and the damper 4 are arranged in the first oil passage 6 on one side near the ABS oil pipe connector 5, and the two ends of the damper 4 are respectively connected to the buffer pad 3 and the ABS oil pipe connector 5, and the damper 4 has a clearance fit with the ABS oil pipe connector 5. Specifically, in this design, the pipeline buffer is arranged on the pipeline between the master cylinder and the hydraulic ABS. When the hydraulic ABS activates the pressure regulating device, the solenoid valve is actuated to achieve pressure maintenance, pressure reduction, and pressure increase control of the brake cylinder. During brake decompression, the return oil pump works to pump the brake fluid into the high-pressure accumulator and the master cylinder. The repeated actions of oil suction and oil injection during the pumping process increase the pressure fluctuation of the brake line, thereby generating hydraulic shock, vibration and noise in the pipeline. The impact, vibration and noise in the pipeline are absorbed by the role of the pipeline buffer, which can effectively improve the safety and stability of the ABS braking system; the buffer pad 3 in the buffer assembly adopts EPDM rubber, making it an elastic buffer structure, which can effectively reduce the intensity of liquid fluctuations during the flow of oil, thereby reducing the vibration and noise of the hydraulic pipeline. The rubber buffer pad 3 is provided on the base of the damper 4, and the damper 4 is provided with a throttle port and an oil tank 9. The purpose of this design is to alleviate the hydraulic impact force. When the oil enters the pipeline buffer from the main cylinder port, the central oil hole 7 in the middle of the damper 4 plays a throttling role, and the oil flows to the edge and then flows out from the auxiliary oil hole 8, which effectively reduces the impact force of the oil. When the oil enters the pipeline buffer from the hydraulic ABS, the oil groove 9 of the damper 4 and the silicone pad reduce the impact force of the oil and allow the oil to enter the pipeline smoothly.

[0020] Furthermore, the damper 4 is provided with a central oil hole 7 and several auxiliary oil holes 8 equidistantly spaced about the central oil hole 7. The central oil hole 7 has a diameter of 1 mm, and the auxiliary oil holes 8 have a diameter of 1.5 mm. Both the central oil hole 7 and the auxiliary oil holes 8 are connected to the first oil passage 6. Specifically, in this embodiment, oil first flows out of the central oil hole 7, and any remaining oil overflows into the surrounding auxiliary oil holes 8. This effectively reduces the impact force of the oil during flow, further reducing noise and vibration within the pipeline.

[0021] Further, a plurality of oil grooves 9 are arranged on the side surface of the damper 4 at equal intervals. Specifically, in the embodiment, six oil grooves 9 are arranged, and an oil buffer area is formed between the oil grooves 9, which can adapt to the pressure change of the oil, so that the damper 4 can maintain stable damping effect during use.

[0022] Further, an inverted bevel 10 is arranged on one end of the damper 4 close to the ABS oil pipe connecting piece 5, and the inclined direction of the inverted bevel 10 is that the outer wall of the damper 4 is inclined to the lower part of the central axis of the ABS oil pipe connecting piece 5. Specifically, in the embodiment, since the damper 4 is in clearance fit with the ABS oil pipe connecting piece 5, the arrangement of the inverted bevel 10 makes the damper 4 move smoothly in the axial direction without being blocked, thereby increasing the reliability of the pipeline damper.

[0023] Further, a damper mounting hole 11 is arranged on the mounting bracket 1, and the ABS oil pipe connecting piece 5 in the damper assembly is welded and fixed with the hole wall of the damper mounting hole 11. Specifically, in the embodiment, the ABS oil pipe connecting piece 5 is fixed with the damper mounting hole 11 on the mounting bracket 1 by welding, which ensures the stability and durability of the entire pipeline damper assembly. The welding fixing mode not only improves the reliability of the connection, but also reduces the risk of loosening caused by vibration and impact, thereby ensuring the stable operation of the entire hydraulic brake system under various working conditions.

[0024] Further, the edge of the mounting bracket 1 is bent and arranged towards the master cylinder oil pipe connecting piece 2. Specifically, in the embodiment, the mounting bracket 1 is bent to form a more solid structure, which increases the strength, stability and carrying capacity of the bracket.

[0025] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic brake system pipeline buffer, comprising a buffer assembly and a mounting bracket, wherein the buffer assembly is mounted on the mounting bracket, and characterized in that: The buffer assembly includes a master cylinder oil pipe connector, a buffer pad, a damper and an ABS oil pipe connector. The ABS oil pipe connector is arranged at one end of the master cylinder oil pipe connector. A first oil channel is opened on the master cylinder oil pipe connector. One end of the ABS oil pipe connector extends into the first oil channel and has an interference fit with the master cylinder oil pipe connector. The buffer pad and the damper are arranged on one side of the first oil channel close to the ABS oil pipe connector. The two ends of the damper are respectively connected to the buffer pad and the ABS oil pipe connector. The damper has a clearance fit with the ABS oil pipe connector.

2. The hydraulic brake system pipeline buffer according to claim 1, characterized in that: The damper is provided with a central oil hole and several auxiliary oil holes distributed at equal intervals with the central oil hole as the center. The diameter of the central oil hole is 1 mm, and the diameter of the auxiliary oil holes is 1.5 mm. The central oil hole and the auxiliary oil holes are both connected to the first oil channel.

3. The hydraulic brake system pipeline buffer according to claim 2, characterized in that: A plurality of oil grooves are provided on the side surface of the damper at equal intervals.

4. The hydraulic brake system pipeline buffer according to claim 2, characterized in that: A chamfer is provided on one end of the damper close to the ABS oil pipe connector, and the inclination direction of the chamfer is that the outer wall of the damper is inclined toward the lower part of the central axis of the ABS oil pipe connector.

5. The hydraulic brake system pipeline buffer according to claim 1, characterized in that: A buffer mounting hole is provided on the mounting bracket, and the ABS oil pipe connector in the buffer assembly is fixed to the hole wall of the buffer mounting hole by welding.

6. The hydraulic brake system pipeline buffer according to claim 4, characterized in that: The edge of the mounting bracket is bent toward the master cylinder oil pipe connecting piece.

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