Pressure increasing valve for brake system
By designing specific channels and blocking element structures in the boosting valve of the braking system, the problem of slow speed of the existing boosting valve is solved, rapid completion of boosting and pressure relief is achieved, and the dynamic adjustment capability of the vehicle is improved. and performance.
Patent Information
- Application Number
- CN202421152818.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The booster valves of the existing brake system are slow during the boosting and pressure relief process, which affects the rapid dynamic adjustment and vehicle performance during the brake process.
A booster valve for the braking system is designed. By arranging specific channels and flow-blocking elements on the valve block and base, and providing flow-blocking protrusions on the inner wall, the flow area is increased to accelerate the boosting and pressure relief. process.
It realizes the rapid completion of pressurization and pressure relief, enables rapid dynamic adjustment of the vehicle during and after the braking process, and improves vehicle performance.
Smart Images
Figure CN222372863U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of automobile braking, and specifically relates to a pressure-boosting valve used in a braking system. Background Art
[0002] The booster valve of the brake system is mainly used in the automobile anti-lock braking system (ABS), the automobile anti-skid system (ASR) or the automobile electronic stability program system (ESP). It can complete the dynamic adjustment of the vehicle. The booster valve can increase the brake cylinder pressure during emergency braking, reduce the braking ratio of the whole vehicle under the premise of meeting the emergency braking distance, reduce the adhesion utilization rate and the braking power during normal braking, thereby reducing the thermal damage caused by excessive heat load on the wheel and avoiding damage to the brake system. The booster valve has three functions of boosting, maintaining pressure and releasing pressure. During the boosting and releasing process, the flow area between the one-way valve closing element and the flow channel is small, resulting in slow boosting and releasing process, affecting the rapid dynamic adjustment of the vehicle during and after the braking process, and reducing vehicle performance.
[0003] To solve the above problems, patent document 201963920U discloses an emergency boost valve, including a boost valve sleeve connected to a train pipe, an auxiliary air cylinder and a volume chamber respectively, a boost valve stem is arranged in the boost valve sleeve, and a pull rod, a pull rod sleeve and a plunger are arranged in the boost valve stem, but it cannot solve the above problems. Utility Model Content
[0004] The utility model is designed to solve the above problems, and aims to provide a booster valve for a braking system that has fast pressure increase and pressure release and can complete rapid dynamic adjustment of the vehicle during and after the braking process. In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] The utility model provides a booster valve for a brake system, which has the following characteristics: a valve block, which is provided with a first channel and a second channel; a base, which is arranged inside the valve block, and is provided with a first bias channel and a second bias channel, the first bias channel is communicated with the first channel, the second bias channel is communicated with the second channel, a flow blocking element is provided in the first bias channel, and a flow blocking protrusion is provided on the inner wall of the first bias channel; a valve seat insert, which is arranged on the base, and is provided with a throttling hole communicated with the second channel; a valve core assembly, which is arranged on the base and is located above the valve seat insert, and comprises a valve stem, and one end of the valve stem abuts against the throttling hole.
[0006] In the booster valve for the brake system provided by the utility model, it can also have the following characteristics: the valve core assembly also includes a valve base, a moving core and a valve sleeve, the valve base is arranged on the base, a connecting flow channel is opened on the valve base, both sides of the connecting flow channel are connected with the throttling hole and the second channel, the valve stem can be movably inserted into the valve base, the moving core is arranged on one end of the valve stem away from the throttling hole, the valve sleeve is sleeved on the valve base, and the moving core is located inside the valve sleeve.
[0007] The pressure-boosting valve for a brake system provided by the utility model may also have the following features: the moving core is an armature moving core, and a coil is wound around the outside of the valve sleeve.
[0008] The pressure boosting valve for the brake system provided by the utility model may also have the following features: a first filter screen is provided at the bottom of the base, the first filter screen is located at the outlet of the first channel, and a second filter screen is provided at the bottom of the valve base.
[0009] The pressure-boosting valve for a brake system provided by the utility model may also have the following feature: the flow-blocking element is a spherical metal steel ball, which is movably arranged in the first biasing channel.
[0010] The booster valve for the brake system provided by the utility model may also have the following features: the flow-blocking protrusions are evenly distributed on the inner wall of the first bias channel and are located at the entrance of the first bias channel, and an arc groove is provided between two adjacent flow-blocking protrusions.
[0011] The booster valve for the brake system provided by the utility model may also have the following features: the flow-blocking protrusions are evenly distributed on the inner wall of the first bias channel and are located at the entrance of the first bias channel, and a flat-bottomed groove is provided between two adjacent flow-blocking protrusions.
[0012] The pressure-boosting valve for a brake system provided by the utility model may also have the following feature: the inner diameter of the first biasing channel is greater than the inner diameter of the second biasing channel.
[0013] The pressure-boosting valve for a brake system provided by the utility model may also have the following feature: a central channel is further provided on the base, and both ends of the central channel are connected to the first channel and the throttle hole.
[0014] The pressure-boosting valve for a brake system provided by the utility model may also have such a feature that the outlet of the second channel is communicated with the wheel cylinder.
[0015] The technical effect of the utility model is as follows: the boost valve for a braking system provided by the utility model includes a valve block, a base, a valve seat insert and a valve core assembly, the valve block is provided with a first channel and a second channel, the base is arranged inside the valve block, the base is provided with a first bias channel and a second bias channel, the first bias channel is communicated with the first channel, the second bias channel is communicated with the second channel, a blocking element is provided in the first bias channel, a blocking protrusion is provided on the inner wall of the first bias channel, the valve seat insert is arranged on the base, a throttling hole communicated with the second channel is provided on the valve seat insert, the valve core assembly is arranged on the base, located above the valve seat insert, the valve core assembly includes a valve stem, one end of the valve stem abuts against the throttling hole, the blocking protrusion in the first bias channel can limit the blocking element while increasing the flow area of the first bias channel, thereby ensuring fast boost and pressure relief, and completing rapid dynamic adjustment of the vehicle during and after the braking process.
[0016] Therefore, the boost valve for the brake system provided by the utility model has fast pressure increase and pressure release, and can complete the fast dynamic adjustment of the vehicle during and after the braking process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] This specification includes the following drawings, which show the following contents:
[0018] Figure 1 It is a schematic structural diagram of a pressure booster valve for a brake system in an embodiment of the utility model in the cross-sectional view direction;
[0019] Figure 2 It is a schematic diagram of the structure of the base in the bottom view direction in the embodiment of the utility model;
[0020] Figure 3 yes Figure 2 A partial enlarged view of part A;
[0021] Figure 4 The structure of the flow-blocking protrusion in the embodiment of the utility model is shown in FIG. Figure 1 ;
[0022] Figure 5 The structure of the flow-blocking protrusion in the embodiment of the utility model is shown in FIG. Figure 2 .
[0023] Markings in the figure are: 10-valve block, 11-first channel, 12-second channel, 20-base, 21-first bias channel, 22-second bias channel, 23-center channel, 24-blocking element, 25-blocking protrusion, 26-arc groove, 27-flat bottom groove, 30-valve seat insert, 31-throttle hole, 40-valve core assembly, 41-valve stem, 42-valve base, 421-connecting flow channel, 43-moving core, 44-valve sleeve, 45-coil, 46-spring, 50-first filter screen, 60-second filter screen. DETAILED DESCRIPTION
[0024] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.
[0025] Figure 1 It is a schematic structural diagram of a pressure booster valve for a brake system in an embodiment of the utility model in the cross-sectional view direction;
[0026] like Figure 1 As shown, the pressure boosting valve for a brake system provided by the utility model comprises a valve block 10 , a base 20 , a valve seat insert 30 and a valve core assembly 40 .
[0027] The valve block 10 is provided with a first channel 11 and a second channel 12 , and an outlet of the second channel 12 is communicated with the wheel cylinder.
[0028] Figure 2 It is a schematic diagram of the structure of the base in the bottom view direction in the embodiment of the utility model; Figure 3 yes Figure 2 A partial enlarged view of part A.
[0029] like Figure 2 and Figure 3 As shown, the base 20 is arranged inside the valve block 10, and a first offset channel 21, a second offset channel 22 and a center channel 23 are provided on the base 20. The base 20 is cylindrical, and the center channel 23 is located at the center of the base 20. The first offset channel 21 and the second offset channel 22 are connected and located at an eccentric position of the base 20. One end of the first offset channel 21 is connected to the first offset channel 21, and the other end of the first offset channel 21 is connected to the second offset channel 22. The end of the second offset channel 22 away from the first offset channel 21 is connected to the second channel 12.
[0030] The inner diameter of the first bias channel 21 is larger than the inner diameter of the second bias channel 22. A blocking element 24 is provided in the first bias channel 21. A blocking protrusion 25 is provided on the inner wall of the first bias channel 21. The blocking element 24 is a spherical metal steel ball. The blocking element 24 can be movably arranged in the first bias channel 21. The size of the blocking element 24 is adapted to the inner diameter of the first bias channel 21, so that the blocking element 24 can block the second bias channel 22. The blocking protrusion 25 can limit the blocking element 24 to prevent the blocking element 24 from slipping out of the first bias channel 21, causing failure of the boost valve.
[0031] Figure 4 The structure of the flow-blocking protrusion in the embodiment of the utility model is shown in FIG. Figure 1.
[0032] like Figure 4 As shown, the flow-blocking protrusions 25 are evenly distributed on the inner wall of the first bias channel 21 and are located at the entrance of the first bias channel 21. An arc groove 26 is provided between two adjacent flow-blocking protrusions 25. The arc groove 26 can increase the flow area at the entrance of the first bias channel 21, thereby ensuring that the oil in the boost valve can quickly flow into the first bias channel 21.
[0033] Figure 5 The structure of the flow-blocking protrusion in the embodiment of the utility model is shown in FIG. Figure 2 .
[0034] like Figure 5 As shown, the blocking protrusions 25 are evenly distributed on the inner wall of the first bias channel 21 and are located at the entrance of the first bias channel 21. A flat bottom groove 27 can be provided between two adjacent blocking protrusions 25. The flat bottom groove 27 can increase the flow area at the entrance of the first bias channel 21, thereby ensuring that the oil in the booster valve can quickly flow into the first bias channel 21. In practical applications, groove structures with other shape characteristics can be selected to increase the flow area at the entrance of the first bias channel 21.
[0035] The valve seat insert 30 is disposed on the base 20 . A throttling hole 31 is formed on the valve seat insert 30 . The throttling hole 31 can connect the second channel 12 and the central channel 23 .
[0036] The valve core assembly 40 is disposed on the base 20 . The valve core assembly 40 is located above the valve seat insert 30 . The valve core assembly 40 includes a valve stem 41 , a valve base 42 , a moving core 43 and a valve sleeve 44 .
[0037] One end of the valve stem 41 is close to the throttle hole 31, and the valve stem 41 can be movably installed on the valve base 42. The valve stem 41 can abut against the throttle hole 31 through one end to block the throttle hole 31, thereby changing the flow direction of the oil in the booster valve. The valve base 42 is arranged on the base 20, and the valve base 42 is provided with a connecting flow channel 421 at both sides of the valve seat insert 30, and the two sides of the connecting flow channel 421 are respectively connected to the throttle hole 31 and the second channel 12.
[0038] The moving core 43 is arranged on the end of the valve stem 41 away from the throttle hole 31, the valve sleeve 44 is sleeved on the valve base 42, and the moving core 43 is located inside the valve sleeve 44. The moving core 43 is an armature moving core, and a coil 45 is wound around the valve sleeve 44. By energizing or de-energizing the coil 45, the moving core 43 can be driven to move in the valve sleeve 44, thereby driving the valve stem 41 to approach or move away from the throttle hole 31, thereby blocking the throttle hole 31 or opening the throttle hole 31.
[0039] A spring 46 is provided between the valve stem 41 and the valve base 42 , and the spring 46 can drive the valve stem 41 to rebound and move away from the throttle hole 31 , thereby improving the reliability of the boost valve.
[0040] A first filter screen 50 is provided at the bottom of the base 20. The first filter screen 50 is located at the outlet of the first channel 11 and can be used to filter the oil entering the boost valve. A second filter screen 60 is provided at the bottom of the valve base 42 to further filter the oil and prevent impurities in the oil from clogging the internal structure of the boost valve, thereby extending the service life of the boost valve.
[0041] In the boosting process of the boosting valve for a brake system provided by the utility model, oil enters the inside of the boosting valve through the first channel 11, a small part of the oil flows into the first bias channel 21, pushing the flow blocking element 24 to block the second bias channel 22, preventing the oil from flowing from the second bias channel 22 to the second channel 12, and the remaining part of the oil passes through the central channel 23, the throttle hole 31 and the connecting flow channel 421 in sequence, and finally enters the second channel 12, and the oil enters the wheel cylinder through the second channel 12, thereby increasing the wheel cylinder pressure.
[0042] During the pressure maintaining process of the booster valve for the brake system provided by the utility model, the coil 45 is energized, and the moving core 43 drives the valve stem 41 to approach the throttle hole 31, and the end of the valve stem 41 close to the throttle hole 31 abuts against the throttle hole 31, thereby blocking the throttle hole 31, thereby preventing the oil from flowing to the second channel 12 through the throttle hole 31. At this time, the oil pressure received by the blocking element 24 from the side of the first bias channel 21 is greater than the oil pressure received from the side of the second bias channel 22, and the blocking element 24 still blocks the entrance of the second bias channel 22, thereby preventing the oil from flowing from the second bias channel 22 to the second channel 12, and the wheel cylinder maintains pressure.
[0043] During the pressure relief process of the pressure boosting valve for a braking system provided by the utility model, oil leaves the pressure boosting valve from the first channel 11, the coil 45 is powered off, the moving core 43 drives the valve stem 41 away from the throttle hole 31, the throttle hole 31 opens, the oil pressure on the flow-blocking element 24 from the first bias channel 21 side is less than the oil pressure on the second bias channel 22 side, the second bias channel 22 opens, a part of the oil passes through the second channel 12, the connecting flow channel 421, the throttle hole 31 and the center channel 23 in sequence, and finally leaves the pressure boosting valve through the first channel 11, another part of the oil passes through the second channel 12, the second bias channel 22 and the first bias channel 21 in sequence, and finally leaves the pressure boosting valve through the first channel 11, the flow area of the first bias channel 21 increases, thereby quickly completing the wheel cylinder pressure relief process, and completing the rapid dynamic adjustment of the vehicle after the braking process is completed.
[0044] Functions and Effects of the Embodiments
[0045] The booster valve for a brake system provided by the utility model comprises a valve block 10, a base 20, a valve seat insert 30 and a valve core assembly 40, the valve block 10 is provided with a first channel 11 and a second channel 12, the base 20 is arranged inside the valve block 10, the base 20 is provided with a first bias channel 21 and a second bias channel 22, the first bias channel 21 is communicated with the first channel 11, the second bias channel 21 is communicated with the second channel 12, a flow blocking element 24 is provided in the first bias channel 21, a flow blocking protrusion 25 is provided on the inner wall of the first bias channel 21, the valve seat insert 30 is arranged on the base 20, and the valve seat insert 30 is provided with a There is a throttle hole 31 connected to the second channel 12, and the valve core assembly 40 is arranged on the base 20 and is located above the valve seat insert 30. The valve core assembly 40 includes a valve stem 41, and one end of the valve stem 41 abuts against the throttle hole 31. The blocking protrusion 25 in the first bias channel 21 can limit the blocking element 24 while increasing the flow area of the first bias channel 21, thereby ensuring fast pressure increase and pressure relief, and completing rapid dynamic adjustment of the vehicle during and after the braking process. The boost valve for the braking system provided by the utility model has fast pressure increase and pressure relief, and completes rapid dynamic adjustment of the vehicle during and after the braking process.
[0046] In the boosting process of the boosting valve for a brake system provided by the utility model, oil enters the inside of the boosting valve through the first channel 11, a small part of the oil flows into the first bias channel 21, pushing the flow blocking element 24 to block the second bias channel 22, preventing the oil from flowing from the second bias channel 22 to the second channel 12, and the remaining part of the oil passes through the central channel 23, the throttle hole 31 and the connecting flow channel 421 in sequence, and finally enters the second channel 12, and the oil enters the wheel cylinder through the second channel 12, thereby increasing the wheel cylinder pressure.
[0047] During the pressure maintaining process of the booster valve for the brake system provided by the utility model, the coil 45 is energized, and the moving core 43 drives the valve stem 41 to approach the throttle hole 31, and the end of the valve stem 41 close to the throttle hole 31 abuts against the throttle hole 31, thereby blocking the throttle hole 31, thereby preventing the oil from flowing to the second channel 12 through the throttle hole 31. At this time, the oil pressure received by the blocking element 24 from the side of the first bias channel 21 is greater than the oil pressure received from the side of the second bias channel 22, and the blocking element 24 still blocks the entrance of the second bias channel 22, thereby preventing the oil from flowing from the second bias channel 22 to the second channel 12, and the wheel cylinder maintains pressure.
[0048] During the pressure relief process of the pressure boosting valve for a braking system provided by the utility model, oil leaves the pressure boosting valve from the first channel 11, the coil 45 is powered off, the moving core 43 drives the valve stem 41 away from the throttle hole 31, the throttle hole 31 opens, the oil pressure on the flow-blocking element 24 from the first bias channel 21 side is less than the oil pressure on the second bias channel 22 side, the second bias channel 22 opens, a part of the oil passes through the second channel 12, the connecting flow channel 421, the throttle hole 31 and the center channel 23 in sequence, and finally leaves the pressure boosting valve through the first channel 11, another part of the oil passes through the second channel 12, the second bias channel 22 and the first bias channel 21 in sequence, and finally leaves the pressure boosting valve through the first channel 11, the flow area of the first bias channel 21 increases, thereby quickly completing the wheel cylinder pressure relief process, and completing the rapid dynamic adjustment of the vehicle after the braking process is completed.
[0049] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A pressure boosting valve for a braking system, characterized in that: include: A valve block (10) is provided with a first channel (11) and a second channel (12); A base (20) is arranged inside the valve block (10), and a first bias channel (21) and a second bias channel (22) are provided on the base (20), the first bias channel (21) is communicated with the first channel (11), and the second bias channel (22) is communicated with the second channel (12), a flow blocking element (24) is provided inside the first bias channel (21), and a flow blocking protrusion (25) is provided on an inner wall of the first bias channel (21); A valve seat insert (30) is arranged on the base (20) and is provided with a throttle hole (31) communicating with the second channel (12); The valve core assembly (40) is arranged on the base (20) and is located above the valve seat insert (30), and comprises a valve stem (41), one end of which abuts against the throttling hole (31).
2. The pressure boosting valve for a brake system according to claim 1, characterized in that: The valve core assembly (40) further comprises a valve base (42), a moving core (43) and a valve sleeve (44); the valve base (42) is arranged on the base (20); a connecting flow channel (421) is provided on the valve base (42); two sides of the connecting flow channel (421) are connected with the throttling hole (31) and the second channel (12); the valve stem (41) is movably inserted into the valve base (42); the moving core (43) is arranged on one end of the valve stem (41) away from the throttling hole (31); the valve sleeve (44) is sleeved on the valve base (42); and the moving core (43) is located inside the valve sleeve (44).
3. The pressure boosting valve for a brake system according to claim 2, characterized in that: The moving core (43) is an armature moving core, and a coil (45) is wound around the valve sleeve (44).
4. The pressure boosting valve for a brake system according to claim 3, characterized in that: A first filter screen (50) is provided at the bottom of the base (20), and the first filter screen (50) is located at the outlet of the first channel (11). A second filter screen (60) is provided at the bottom of the valve base (42).
5. The pressure boosting valve for a brake system according to claim 4, characterized in that: The flow-blocking element (24) is a spherical metal steel ball, and is movably arranged in the first biasing channel (21).
6. The pressure boosting valve for a brake system according to claim 5, characterized in that: The flow-blocking protrusions (25) are evenly distributed on the inner wall of the first bias channel (21) and are located at the entrance of the first bias channel (21), and an arc-shaped groove (26) is provided between two adjacent flow-blocking protrusions (25).
7. The pressure boosting valve for a brake system according to claim 5, characterized in that: The flow-blocking protrusions (25) are evenly distributed on the inner wall of the first biasing channel (21) and are located at the entrance of the first biasing channel (21), and a flat-bottomed groove (27) is provided between two adjacent flow-blocking protrusions (25).
8. The pressure boosting valve for a brake system according to claim 1, characterized in that: The inner diameter of the first biasing channel (21) is greater than the inner diameter of the second biasing channel (22).
9. The pressure boosting valve for a brake system according to claim 1, characterized in that: The base (20) is also provided with a central channel (23), and both ends of the central channel (23) are in communication with the first channel (11) and the throttle hole (31).
10. The pressure boosting valve for a brake system according to any one of claims 1 to 9, characterized in that: An outlet of the second passage (12) is communicated with a wheel cylinder.