CN112776783B - Automobile brake vacuum pipeline - Google Patents
Automobile brake vacuum pipeline Download PDFInfo
- Publication number
- CN112776783B CN112776783B CN202110005067.4A CN202110005067A CN112776783B CN 112776783 B CN112776783 B CN 112776783B CN 202110005067 A CN202110005067 A CN 202110005067A CN 112776783 B CN112776783 B CN 112776783B
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- Prior art keywords
- connecting pipe
- shell
- brake
- vacuum
- cavity
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses an automobile brake vacuum pipeline which comprises a vacuum booster, a first connecting pipe connected with the vacuum booster, a shock absorber connected with the first connecting pipe, a second connecting pipe connected with the shock absorber, and a vacuum pump connected with the second connecting pipe, wherein the vacuum booster is connected with the vacuum booster; the shock absorber is provided with a shock absorption cavity, the vacuum booster is provided with an atmospheric cavity, the first connecting pipe, the shock absorption cavity, the second connecting pipe and the vacuum pump are sequentially communicated, and the cross sectional areas of the first connecting pipe and the second connecting pipe are smaller than that of the shock absorption cavity. The invention can effectively absorb the air flow vibration caused by air exhaust of the vehicle diaphragm electric vacuum pump, further eliminate the diaphragm vibration of the vacuum booster and avoid the problem of vibration of a brake pedal, and belongs to the technical field of engines.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an automobile brake vacuum pipeline.
Background
On the traditional fuel automobile, a vacuum source required during braking is provided by an engine air inlet manifold, and braking assistance is guaranteed. On the new energy vehicle, an electric vacuum pump device mainly provides a vacuum source required during braking, and the electric vacuum pump device of the current new energy vehicle mainly has two structures, namely a blade structure and a diaphragm structure.
The electric vacuum pump and the vacuum booster are connected through a vacuum brake pipeline. The diaphragm type vacuum pump drives the connecting rod and the diaphragm to move through the motor, and air in the air chamber is discharged. The diaphragm reciprocates, and the volume of the air chamber is changed continuously, so that the air flow in the brake vacuum pipeline is changed continuously. Because the vacuum pipeline volume is less and the constant cross-sectional area, gaseous vibrations can not be absorbed by the vacuum pipeline, and the air current of high vibrations drives vacuum booster diaphragm violent vibrations, because vacuum booster is connected with brake pedal, and then drives brake pedal vibrations, when the driver manipulates brake pedal, the foot can produce the vibrations and feel, influences the driving comfort.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the invention provides an automobile brake vacuum pipeline which can effectively absorb the air flow vibration caused by the air exhaust of a vehicle diaphragm electric vacuum pump, further eliminate the diaphragm vibration of a vacuum booster and avoid the problem of brake pedal vibration.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automobile brake vacuum pipeline comprises a vacuum booster, a first connecting pipe connected with the vacuum booster, a shock absorber connected with the first connecting pipe, a second connecting pipe connected with the shock absorber, and a vacuum pump connected with the second connecting pipe; the shock absorber is provided with a shock absorption cavity, the vacuum booster is provided with an atmospheric cavity, the first connecting pipe, the shock absorption cavity, the second connecting pipe and the vacuum pump are sequentially communicated, and the cross sectional areas of the first connecting pipe and the second connecting pipe are smaller than that of the shock absorption cavity.
Further, the vacuum booster also has a housing; the atmosphere cavity is arranged in the shell, an air valve communicated with the atmosphere cavity is installed on the shell, and the first connecting pipe is communicated with the atmosphere cavity through the air valve.
Further, the air valve is a one-way valve.
Further, the shock absorber includes a first housing and a second housing connected to the first housing; the first shell and the second shell jointly enclose and close to form the damping cavity, an air exhaust port communicated with the damping cavity is formed in the first shell, the first connecting pipe is connected to the air exhaust port, an air exhaust port communicated with the damping cavity is formed in the second shell, and the second connecting pipe is connected to the air exhaust port.
Further, the first housing is ultrasonically welded to the second housing.
Further, the first housing is cylindrical; the exhaust port is arranged on the outer end face of the first shell, a first reinforcing rib is arranged on the outer circumferential face of the first shell, the first reinforcing ribs are multiple, and the first reinforcing ribs are distributed along the circumferential direction of the first shell at intervals.
Furthermore, a second reinforcing rib is arranged in the damping cavity, the second reinforcing rib is fixed on the inner end face of the first shell, one end of the second reinforcing rib is connected with the inner circumferential face of the first shell, and the other end of the second reinforcing rib is connected with the edge of the exhaust port.
Further, there are a plurality of second reinforcing ribs, and all of the second reinforcing ribs are uniformly distributed along the inner circumferential surface of the first housing.
Furthermore, the automobile brake vacuum pipeline also comprises a brake pedal; the vacuum booster is also provided with a boosting push rod, and the boosting push rod is connected with the brake pedal.
Furthermore, the automobile brake vacuum pipeline also comprises a brake cylinder; the vacuum booster is also provided with a cylinder push rod, and the cylinder push rod is connected with a piston of the brake cylinder.
Compared with the prior art, the invention has the following beneficial effects: the invention has smart structure, and the invention utilizes the vibration absorption principle, because the vibration attenuation is related to the sectional area ratio of the pipeline, the larger the ratio is, the better the vibration absorption effect is. After the damping cavity is added, the air flow vibration caused by air suction of the vacuum pump can be effectively absorbed, so that the vibration of the diaphragm of the vacuum booster is eliminated, the problem of vibration of the brake pedal is avoided, and the operating comfort of the brake pedal is improved.
Drawings
FIG. 1 is a schematic diagram of the construction of an automotive brake vacuum circuit.
Fig. 2 is a schematic view of the structure of the shock absorber.
Fig. 3 is a sectional view of the shock absorber.
In the figure, 1 is a vacuum booster, 2 is a first connecting pipe, 3 is a shock absorber, 4 is a second connecting pipe, 5 is a vacuum pump, 6 is an air valve, 7 is a brake pedal, 8 is a brake cylinder, 31 is a first shell, 32 is a second shell, 33 is a shock absorption cavity, 34 is a first reinforcing rib, and 35 is a second reinforcing rib.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the present embodiment provides an automobile brake vacuum line, which includes a vacuum booster 1, a first connection pipe 2 connected to the vacuum booster 1, a damper 3 connected to the first connection pipe 2, a second connection pipe 4 connected to the damper 3, and a vacuum pump 5 connected to the second connection pipe 4; the shock absorber 3 is provided with a shock absorption cavity 33, the vacuum booster 1 is provided with an atmosphere cavity, the first connecting pipe 2, the shock absorption cavity 33, the second connecting pipe 4 and the vacuum pump 5 are sequentially communicated, and the cross sectional areas of the first connecting pipe 2 and the second connecting pipe 4 are smaller than that of the shock absorption cavity 33. The damping cavity 33 is a resonant cavity, and according to the vibration absorption principle, the vibration attenuation is related to the sectional area ratio of the pipeline, and the larger the ratio is, the better the vibration absorption effect is. After the resonant cavity is added, the air flow vibration caused by air suction of the vacuum pump 5 can be effectively absorbed, so that the vibration of the diaphragm of the vacuum booster 1 is eliminated, and the problem of vibration of the brake pedal 7 is avoided.
Specifically, in one embodiment, the cross-sectional areas of the first connecting pipe 2 and the second connecting pipe 4 are both S1The cross-sectional area of the resonant cavity is S2The transfer energy loss TL of the resonator is:
wherein, the larger the loss amount of the transmitted energy is, the better the shock absorption effect is.
Specifically, in one embodiment, the first connecting pipe 2 is L-shaped, and the airflow enters the resonant cavity after turning, so that the airflow is prevented from entering the resonant cavity at a stroke and impacting the resonant cavity when the vacuum pump 5 pumps air.
Specifically, in one embodiment, the vacuum booster 1 further has a housing; the atmosphere chamber is seted up in the casing, installs the pneumatic valve 6 with the atmosphere chamber intercommunication on the casing, and first connecting pipe 2 passes through pneumatic valve 6 and atmosphere chamber intercommunication. The vacuum booster 1 casing be equipped with atmosphere chamber and vacuum cavity, the vacuum cavity passes through the diaphragm with the atmosphere chamber and separates (prior art), and when 5 take out the gas in atmosphere chamber of vacuum pump, through the shock attenuation of resonant cavity, can effectively absorb 5 air currents vibrations that bleed and arouse of vacuum pump, and then eliminate 1 diaphragm vibrations of vacuum booster, avoid arousing brake pedal 7 vibrations problems.
Specifically, in one embodiment, the gas valve 6 is a one-way valve to prevent reverse flow of gas.
Specifically, in one embodiment, the shock absorber 3 includes a first housing 31 and a second housing 32 connected to the first housing 31; first shell 31 and second shell 32 enclose jointly and close and form shock attenuation chamber 33, are equipped with the gas vent that communicates with shock attenuation chamber 33 on the first shell 31, and first connecting pipe 2 is connected in gas vent department, is equipped with the extraction opening that communicates with shock attenuation chamber 33 on the second shell 32, and second connecting pipe 4 is connected in extraction opening department.
Specifically, in one embodiment, the first housing 31 is ultrasonically welded to the second housing 32. So that the joint of the first shell 31 and the second shell has better sealing performance.
Specifically, in one embodiment, a convex ring is annularly arranged on the outer surface of the first housing 31, a groove is annularly arranged on the inner wall of the second housing 32, the second housing 32 is sleeved on the outer surface of the first housing 31, the bottom wall of the groove is attached to the outer surface of the first housing 31, one end of the first housing 31 abuts against the side wall of the groove, and one end of the second housing 32 abuts against the side surface of the convex ring.
Specifically, in one embodiment, the groove is L-shaped and the ultrasonic weld is Z-shaped. The weld seams are located at the junction of the bottom wall of the groove of the second housing 32 and the outer surface of the first housing 31, at the junction of the side wall of the groove of the second housing 32 and the first housing 31, and at the junction of the second housing 32 and the male ring. So that the sealing performance of the welding seam is better.
Specifically, in one embodiment, the outer surface of the first housing 31 is annularly provided with a concave ring.
Specifically, in one embodiment, the first connection portion and the second connection portion are each L-shaped.
Specifically, in one embodiment, the first housing 31 is cylindrical; the exhaust port is opened on the outer end face of the first housing 31, a plurality of first reinforcing ribs 34 are provided on the outer circumferential face of the first housing 31, and the plurality of first reinforcing ribs 34 are distributed at intervals along the circumferential direction of the first housing 31. The first ribs 34 prevent the first casing 31 from shrinking toward the second casing when the vacuum pump 5 evacuates air.
Specifically, in one embodiment, a second reinforcing rib 35 is provided in the damper chamber 33, the second reinforcing rib 35 is fixed to the inner end surface of the first housing 31, one end of the second reinforcing rib 35 is connected to the inner circumferential surface of the first housing 31, and the other end of the second reinforcing rib 35 is connected to the edge of the exhaust port. The second reinforcing rib 35 can prevent the first casing 31 from radially contracting when the vacuum pump 5 evacuates air. The second reinforcing rib 35 is located on the inner end surface of the first housing 31, which can not only enhance the strength of the first housing, but also prevent the second reinforcing rib 35 from obstructing the gas flow.
Specifically, in one embodiment, the second reinforcing ribs 35 have a plurality of second reinforcing ribs 35, and all of the second reinforcing ribs 35 are uniformly distributed along the inner circumferential surface of the first housing 31.
Specifically, in one embodiment, the vehicle brake vacuum line further comprises a brake pedal 7; the vacuum booster 1 also has a booster push rod, which is connected to a brake pedal 7.
Specifically, in one embodiment, the vehicle brake vacuum line further comprises a brake cylinder 8; the vacuum booster 1 also has a cylinder push rod which is connected to the piston of the brake cylinder 8.
Specifically, in one embodiment, the connection of the first connection pipe 2 and the damper 3 is a smooth connection, and the connection of the second connection pipe 4 and the damper 3 is a smooth connection.
Specifically, in one embodiment, the first connection pipe 2 is integrally formed with the first housing, and the second housing is integrally formed with the second connection pipe 4.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an automobile brake vacuum line which characterized in that: the vacuum booster comprises a vacuum booster, a first connecting pipe connected with the vacuum booster, a shock absorber connected with the first connecting pipe, a second connecting pipe connected with the shock absorber, and a vacuum pump connected with the second connecting pipe; the shock absorber is provided with a shock absorption cavity, the vacuum booster is provided with an atmospheric cavity, the first connecting pipe, the shock absorption cavity, the second connecting pipe and the vacuum pump are sequentially communicated, and the cross sectional areas of the first connecting pipe and the second connecting pipe are smaller than that of the shock absorption cavity;
the calculation formula of the transmission energy loss TL of the damping cavity is as follows:
wherein: s1The cross-sectional area of the first connecting pipe or the second connecting pipe; s2The cross-sectional area of the shock absorbing chamber.
2. The brake vacuum line of claim 1, wherein: the vacuum booster also has a housing; the atmosphere cavity is arranged in the shell, an air valve communicated with the atmosphere cavity is installed on the shell, and the first connecting pipe is communicated with the atmosphere cavity through the air valve.
3. The brake vacuum line of claim 2, wherein: the air valve is a one-way valve.
4. The brake vacuum line of claim 1, wherein: the shock absorber comprises a first shell and a second shell connected with the first shell; the first shell and the second shell jointly enclose and close to form the damping cavity, an air exhaust port communicated with the damping cavity is formed in the first shell, the first connecting pipe is connected to the air exhaust port, an air exhaust port communicated with the damping cavity is formed in the second shell, and the second connecting pipe is connected to the air exhaust port.
5. The brake vacuum line of claim 4, wherein: the first housing is ultrasonically welded to the second housing.
6. The brake vacuum line of claim 4, wherein: the first shell is cylindrical; the exhaust port is arranged on the outer end face of the first shell, a first reinforcing rib is arranged on the outer circumferential face of the first shell, the first reinforcing ribs are multiple, and the first reinforcing ribs are distributed along the circumferential direction of the first shell at intervals.
7. The brake vacuum line of claim 5, wherein: and a second reinforcing rib is arranged in the damping cavity, the second reinforcing rib is fixed on the inner end surface of the first shell, one end of the second reinforcing rib is connected with the inner circumferential surface of the first shell, and the other end of the second reinforcing rib is connected with the edge of the exhaust port.
8. The brake vacuum line of claim 7, wherein: the second reinforcing ribs are provided in plurality, and all the second reinforcing ribs are uniformly distributed along the inner circumferential surface of the first housing.
9. The brake vacuum line of claim 1, wherein: the brake pedal is also included; the vacuum booster is also provided with a boosting push rod, and the boosting push rod is connected with the brake pedal.
10. The brake vacuum line of claim 1, wherein: the brake device also comprises a brake cylinder; the vacuum booster is also provided with a cylinder push rod, and the cylinder push rod is connected with a piston of the brake cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005067.4A CN112776783B (en) | 2021-01-04 | 2021-01-04 | Automobile brake vacuum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005067.4A CN112776783B (en) | 2021-01-04 | 2021-01-04 | Automobile brake vacuum pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112776783A CN112776783A (en) | 2021-05-11 |
| CN112776783B true CN112776783B (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110005067.4A Active CN112776783B (en) | 2021-01-04 | 2021-01-04 | Automobile brake vacuum pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112776783B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581154A (en) * | 2021-08-31 | 2021-11-02 | 重庆长安汽车股份有限公司 | Noise reduction and vibration reduction device, brake vacuum pipeline and vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006182214A (en) * | 2004-12-28 | 2006-07-13 | Suzuki Motor Corp | Piping structure for brake vacuum hose |
| KR100657680B1 (en) * | 2005-07-26 | 2006-12-14 | 현대자동차주식회사 | Brake vacuum hose damper of vehicle |
| CN104044569A (en) * | 2013-03-13 | 2014-09-17 | 上海旭岛汽车零部件有限公司 | Elastic shock absorbing device for connection between electric vacuum pump and installing support frame |
| KR101704273B1 (en) * | 2015-10-26 | 2017-02-07 | 현대자동차주식회사 | Noise reducing device for vacuum pressure line of brake booster |
| CN206406907U (en) * | 2017-01-05 | 2017-08-15 | 浙江零跑科技有限公司 | A kind of lightweight high-intensity vacuum tank used for electric vehicle |
| CN207481882U (en) * | 2017-11-29 | 2018-06-12 | 江西昌河汽车有限责任公司 | Service brake arrangement |
| CN108528425A (en) * | 2018-05-31 | 2018-09-14 | 湖州知谷汽车零部件有限公司 | New-energy automobile plastic vacuum container |
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2021
- 2021-01-04 CN CN202110005067.4A patent/CN112776783B/en active Active
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| CN112776783A (en) | 2021-05-11 |
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