CN110425192B - Device for eliminating static and dynamic hydraulic fluctuation - Google Patents
Device for eliminating static and dynamic hydraulic fluctuation Download PDFInfo
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- CN110425192B CN110425192B CN201910816428.6A CN201910816428A CN110425192B CN 110425192 B CN110425192 B CN 110425192B CN 201910816428 A CN201910816428 A CN 201910816428A CN 110425192 B CN110425192 B CN 110425192B
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- 230000003068 static effect Effects 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 claims description 89
- 239000007788 liquid Substances 0.000 claims description 32
- 230000003139 buffering effect Effects 0.000 claims description 12
- 230000010355 oscillation Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 abstract description 5
- 238000003379 elimination reaction Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 36
- 230000009471 action Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000003475 lamination Methods 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
- F15D1/025—Influencing flow of fluids in pipes or conduits by means of orifice or throttle elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to an automobile clutch system, and particularly discloses a device for eliminating static and dynamic hydraulic fluctuation in an automobile clutch system. The valve comprises at least a first valve body, a second valve body, a first valve core, a second valve core and a valve cover. The device for removing static and dynamic hydraulic fluctuation integrates the dynamic hydraulic fluctuation elimination function and the static hydraulic fluctuation elimination function, has the technical advantages of high functional integration level, simple structure, low cost and small occupied space, and can be installed in a compact vehicle type in enough space so that the vehicle can avoid adverse effects caused by static hydraulic fluctuation and dynamic hydraulic fluctuation.
Description
Technical Field
The invention relates to an automobile clutch system, in particular to a device for eliminating static and dynamic hydraulic fluctuation in the automobile clutch system.
Background
The hydraulic clutch is to realize the separation and combination of the clutch through a hydraulic control system. When the clutch pedal is depressed, brake fluid flows from the clutch master cylinder to the clutch slave cylinder, and after the clutch pedal is released, the brake fluid flows back from the clutch slave cylinder to the clutch master cylinder.
In the working state of the clutch, hydraulic fluctuation is generated in the process of stepping on the clutch pedal, namely, in the process of flowing brake fluid from a clutch master cylinder to a clutch slave cylinder, and the hydraulic fluctuation generated in the process is called dynamic hydraulic fluctuation in the industry; when the pedal is left in a certain position, for example in a semi-interlocked state, the brake fluid generates a reverse hydraulic pressure fluctuation, which is known in the industry as a static hydraulic pressure fluctuation.
Whether static hydraulic fluctuation or dynamic hydraulic fluctuation can cause the shake of parts such as a clutch master cylinder, a clutch slave cylinder, a clutch pedal and the like, so that the service lives of the engine, the clutch master cylinder, the clutch slave cylinder, the clutch pedal and other parts in a clutch operating system are influenced, the maintenance time of a vehicle is shortened, and the comfort of a driver stepping on the clutch pedal is influenced.
In the prior art, both devices for eliminating static hydraulic fluctuations and devices for eliminating dynamic hydraulic fluctuations have been used. However, to eliminate both static and dynamic hydraulic fluctuations, two sets of hydraulic fluctuation elimination devices are required, which not only results in high cost, but also requires a large space, and there is insufficient space for installing two sets of devices for compact vehicles.
Disclosure of Invention
The technical scheme for simultaneously eliminating static hydraulic fluctuation and dynamic hydraulic fluctuation in the hydraulic clutch in the prior art has the technical defects of complex structure, higher cost and higher space requirement.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an apparatus for eliminating static and dynamic hydraulic fluctuations, comprising at least:
The first valve body is provided with a first interface, a second interface, a buffer sink groove and a first liquid flow channel, one end of the first liquid flow channel is communicated with the buffer sink groove, the first liquid flow channel is communicated with the first interface through a second liquid flow channel, and the first liquid flow channel is communicated with the second interface through a third liquid flow channel;
the valve cover is arranged at one end of the first valve body, which is provided with a buffering sink groove, a valve plate is arranged between the valve cover and the first valve body, the valve plate covers the opening end of the buffering sink groove to form a buffering cavity, and one side of the valve cover, which is close to the valve plate, is provided with a deformation sink groove;
The second valve body is arranged in the second connector, a valve core cavity is arranged on one side of the second connector, and a third connector communicated with the valve core cavity is arranged on the other side of the second connector;
the first valve core is arranged in the valve core cavity, a first fitting sealing structure is arranged between the first valve core and the bottom of the second interface, a first elastic structure is arranged between one side, away from the first fitting sealing structure, of the first valve core and the second valve body, and a first valve hole and a second valve hole are axially and penetratingly arranged in the first valve core;
the second valve core comprises a large-diameter section and a small-diameter section, a small-diameter Duan Zi first valve hole of the second valve core penetrates through the second valve hole, a liquid flow gap is arranged between the small-diameter section and the second valve hole, a second attaching sealing structure is arranged between the large-diameter section and the bottom of the first valve hole, and a second elastic structure is arranged between the second valve core and the first valve body.
In a preferred embodiment, a sealing plug is arranged between the valve plate and the first valve body.
In a preferred embodiment, a sealing ring is arranged between the valve cover and the first valve body.
In a preferred embodiment, a sealing ring is arranged between the second valve body and the second interface.
In a preferred embodiment, the valve cover is screwed with the first valve body and/or the second valve body is screwed with the second interface.
An apparatus for eliminating static and dynamic hydraulic fluctuations, comprising at least:
The first valve body is provided with a first interface, a second interface, a buffer sink groove and a first liquid flow channel; one end of the first liquid flow channel is communicated with the buffer sink, and the other end of the first liquid flow channel is communicated with the second interface through a third liquid flow channel; the first interface is communicated with the buffer sink through a second liquid flow channel;
the valve cover is arranged at one end of the first valve body, which is provided with a buffering sink groove, a valve plate is arranged between the valve cover and the first valve body, the valve plate covers the opening end of the buffering sink groove to form a buffering cavity, and one side of the valve cover, which is close to the valve plate, is provided with a deformation sink groove;
The second valve body is arranged in the second connector, a valve core cavity is arranged on one side of the second connector, and a third connector communicated with the valve core cavity is arranged on the other side of the second connector;
the first valve core is arranged in the valve core cavity, a first fitting sealing structure is arranged between the first valve core and the bottom of the second interface, a first elastic structure is arranged between one side, away from the first fitting sealing structure, of the first valve core and the second valve body, and a first valve hole and a second valve hole are axially and penetratingly arranged in the first valve core;
the second valve core comprises a large-diameter section and a small-diameter section, a small-diameter Duan Zi first valve hole of the second valve core penetrates through the second valve hole, a liquid flow gap is arranged between the small-diameter section and the second valve hole, a second attaching sealing structure is arranged between the large-diameter section and the bottom of the first valve hole, and a second elastic structure is arranged between the second valve core and the first valve body.
In a preferred embodiment, a sealing plug is arranged between the valve plate and the first valve body.
In a preferred embodiment, a sealing ring is arranged between the valve cover and the first valve body.
In a preferred embodiment, a sealing ring is arranged between the second valve body and the second interface.
In a preferred embodiment, the valve cover is screwed with the first valve body and/or the second valve body is screwed with the second interface.
The device for eliminating static and dynamic hydraulic fluctuation integrates the dynamic hydraulic fluctuation elimination function and the static hydraulic fluctuation elimination function, has the technical advantages of high functional integration level, simple structure, low cost and small occupied space, and can be installed in a compact vehicle type in enough space so that the vehicle can avoid adverse effects caused by static hydraulic fluctuation and dynamic hydraulic fluctuation.
Drawings
FIG. 1 is a schematic structural view of a device for eliminating static and dynamic hydraulic fluctuation according to a first embodiment;
FIG. 2 is a schematic illustration of the device of FIG. 1 for eliminating static and dynamic hydraulic oscillations after a clutch pedal is depressed;
FIG. 3 is a schematic illustration of the device of FIG. 1 for eliminating static and dynamic hydraulic oscillations after releasing the clutch pedal;
FIG. 4 is a schematic structural view of a device for eliminating static and dynamic hydraulic fluctuation according to a second embodiment;
FIG. 5 is a schematic illustration of the device of FIG. 4 for eliminating static and dynamic hydraulic oscillations after depressing a clutch pedal;
FIG. 6 is a schematic illustration of the device of FIG. 4 for eliminating static and dynamic hydraulic oscillations after releasing the clutch pedal.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be a communication between the interiors of two elements; may be directly or indirectly through an intermediate medium, and the specific meaning of the terms in the present invention will be understood by those skilled in the art in specific cases.
Example 1
As shown in fig. 1 to 3, an apparatus for eliminating static and dynamic hydraulic pressure fluctuation of the present embodiment includes a first valve body 10, a second valve body 20, a first valve core 30, a second valve core 40, and a valve cover 50.
Wherein a first connection 14 is provided on one side of the first valve body 10, which first connection 14 is typically used for connecting a clutch cylinder via a pipeline. The side of the first valve body 10 remote from the first port 14 is provided with a second port 18 for connection with a second valve body 20. A buffer sink 13 is further provided on one side of the first valve body 10, and the buffer sink 13 is used for constructing a buffer chamber.
Wherein, a first flow channel 11 is arranged in the first valve body 10, one end of the first flow channel 11 is communicated with the buffer sink 13, and the other end is communicated with a second interface 18 through a third flow channel 15. In addition, the first flow channel 11 is also communicated with the first interface 14 through the second flow channel 12.
In this embodiment, the valve cap 50 is mounted on the end of the first valve body 10 provided with the buffer sink 13, and typically, the valve cap 50 is in threaded connection with the first valve body 10, that is, the valve cap is provided with an internal threaded hole, and the first valve body 10 is provided with an external thread adapted to the internal threaded hole of the valve cap. A seal ring 80 is further installed between the valve cover 50 and the first valve body 10 to achieve sealing, preventing leakage of brake fluid.
In addition, a valve plate 60 covering the open end of the buffer sink is installed between the valve cover 50 and the first valve body 10, and the valve plate 60 and the buffer sink form a buffer cavity. And a deformation sink groove 51 is arranged on one side of the valve cover 50 close to the valve plate 60, and the deformation sink groove 51 is used as an accommodating space for accommodating deformation of the valve plate 60.
In this embodiment, a sealing plug 70 is disposed between the valve plate 60 and the first valve body, and preferably, the sealing plug is located between the bottom of the buffer sink groove and the valve plate, so as to prevent leakage of brake fluid. In this embodiment, the sealing plug 70 and the sealing ring 80 form a double seal to ensure that brake fluid does not leak out.
In this embodiment, the second valve body 20 is mounted in the second port 18. Preferably, the second valve body 20 is screwed with the second port 18, and a sealing ring 80 is provided between the second valve body 20 and the second port 18 to prevent leakage of brake fluid.
Wherein, the second valve body 20 is provided with a spool cavity 21 at one side of the second interface, and a third interface 22 communicated with the spool cavity is provided at the other side. The third port 22 is typically used to connect a clutch master cylinder via a line.
In this embodiment, the first valve core 30 is disposed in the valve core cavity 21, a flange 32 is disposed on a side of the first valve core 30 near the bottom of the second port, and a plurality of through holes 33 are disposed on the flange 32 along the circumferential direction. The flange 32 is provided with a first sealing surface 35 at one side close to the bottom of the second connector, a second sealing surface 17 at the bottom of the second connector, and a first bonding sealing structure is formed under the condition that the first sealing surface 35 is bonded with the second sealing surface 17.
The first valve core is provided with two limit positions, wherein the first limit position is fit between the first sealing surface and the second sealing surface of the flange, and the second limit position is fit between the flange surface of one side of the flange, which is far away from the first sealing surface, and the end surface of the second valve body.
Further, the first valve core 30 has therein a first valve hole 34 and a second valve hole 31, both of which axially penetrate the first valve core. Wherein the aperture of the first valve hole 34 is larger than the aperture of the second valve hole 31.
In this embodiment, a first elastic structure 90 is disposed between the side of the first valve core away from the first fitting sealing structure and the second valve body, and the first elastic structure 90 is preferably a spring. In a natural state, under the action of the elastic force of the first elastic structure 90, the first sealing surface 35 is attached to and sealed with the second sealing surface 17.
The second valve core 40 of the present embodiment includes a large diameter section 43 and a small diameter section 42, wherein the small diameter Duan Zi of the second valve core has a first valve hole disposed through the second valve hole, and a fluid gap is disposed between the small diameter section and the second valve hole.
In this embodiment, the step surface between the large diameter section 43 and the small diameter section 42 is a sealing surface three 41, the bottom of the first valve hole is a sealing surface four 36, and a second bonding seal structure is formed when the sealing surface three 41 is bonded to the sealing surface four 36.
In this embodiment, a second elastic structure 91 is disposed between the second valve core and the first valve body. Preferably, the second elastic structure 91 is a spring. In a natural state, the third sealing surface 41 and the fourth sealing surface 36 are bonded and sealed under the action of the elastic force of the second elastic structure 91. In this embodiment, the large diameter section 43 is provided with a spring limiting convex ring 44, and one end of the spring is limited by the spring limiting convex ring 44.
The working principle of the device for eliminating static and dynamic hydraulic fluctuation in the embodiment is as follows:
the third interface is connected with the clutch master cylinder, and the first interface is connected with the clutch slave cylinder. In a natural state, the state is shown in fig. 1, the pressure of the clutch master cylinder end and the pressure of the clutch slave cylinder end are balanced, at the moment, the first lamination sealing structure and the second lamination sealing structure are both in lamination sealing states, and the brake fluid passage is in a disconnection state.
When the clutch pedal is depressed, as shown in fig. 2, the brake fluid flows from the clutch master cylinder to the clutch slave cylinder, and in this state, the second fitting sealing structure is disengaged under pressure, the second elastic structure is compressed, the brake fluid passage is opened, and the brake fluid flows through the fluid flow gap between the small-diameter section of the second valve element and the second valve hole of the first valve element. In the process, dynamic hydraulic fluctuation is formed, the dynamic hydraulic fluctuation enters the buffer cavity from the third liquid flow channel and the first liquid flow channel, and the valve plate deforms under the action of the hydraulic fluctuation and protrudes into the deformation sink. Dynamic hydraulic fluctuation is absorbed and eliminated through the valve plate, so that brake fluid flowing to the clutch slave cylinder is ensured to be gentle.
When the clutch pedal is stopped at a certain middle position, the pressure of the clutch master cylinder end and the pressure of the clutch slave cylinder end are balanced, the second fitting sealing structure is restored to the fitting sealing state under the action of the restoring force of the second elastic structure, the state is as shown in fig. 1, brake fluid is blocked at the positions of the first valve core and the second valve core, under the state, the clutch slave cylinder end generates hydraulic fluctuation to the clutch master cylinder end, the hydraulic fluctuation is static hydraulic fluctuation, and the static hydraulic fluctuation is blocked at the positions of the first valve core and the second valve core in the transmission process.
When the clutch pedal is released, as shown in fig. 3, the brake fluid flows reversely, and flows from the clutch cylinder end to the clutch master cylinder end, at this time, under the action of pressure, the first attaching sealing structure is detached from the attaching, and the second attaching sealing structure is in an attaching sealing state. Dynamic hydraulic fluctuation generated in the state is absorbed and eliminated by the valve plate, so that the brake fluid flowing into the clutch master cylinder is ensured to be gentle.
When the clutch pedal stays at a certain middle position in the releasing process, the pressure of the clutch master cylinder end and the pressure of the clutch slave cylinder end are balanced, the first attaching sealing structure is restored to the attaching sealing state under the action of the restoring force of the first elastic structure, the state is as shown in fig. 1, brake fluid is blocked at the positions of the first valve core and the second valve core, in the state, the hydraulic fluctuation of the clutch slave cylinder end is generated, namely, the static hydraulic fluctuation is generated, and in the transmitting process, the static hydraulic fluctuation is blocked at the positions of the first valve core and the second valve core.
In summary, the device for eliminating static and dynamic hydraulic fluctuation of the embodiment integrates the functions of eliminating dynamic hydraulic fluctuation and static hydraulic fluctuation, and has high functional integration level, compact structure and small occupied space. Even in compact vehicle models, there is enough space available for installation so that the vehicle can avoid adverse effects due to static and dynamic hydraulic fluctuations.
Example two
As shown in fig. 4 to 6, an apparatus for eliminating static and dynamic hydraulic pressure fluctuation of the present embodiment includes a first valve body 10, a second valve body 20, a first valve core 30, a second valve core 40, and a valve cover 50.
Wherein a first connection 14 is provided on one side of the first valve body 10, which first connection 14 is typically used for connecting a clutch cylinder via a pipeline. The side of the first valve body 10 remote from the first port 14 is provided with a second port 18 for connection with a second valve body 20. A buffer sink 13 is further provided on one side of the first valve body 10, and the buffer sink 13 is used for constructing a buffer chamber.
In this embodiment, the first valve body 10 is provided with a first flow channel 11 and a fourth flow channel 16 which are respectively communicated with the buffer sink 13. The other end of the first flow channel 11 is communicated with the second interface 18 through a third flow channel 15, and the other end of the fourth flow channel 16 is communicated with the first interface 14 through a second flow channel 12.
Compared with the first embodiment, the structure has better fluidity of the brake fluid in the buffer cavity, and avoids the deposition of impurities caused by overlong residence time of the brake fluid in the buffer cavity. Meanwhile, based on independent arrangement of the two liquid flow channels, all brake liquid needs to pass through the buffer cavity, and the effect of eliminating hydraulic fluctuation is better.
In this embodiment, the valve cap 50 is mounted on the end of the first valve body 10 provided with the buffer sink 13, and typically, the valve cap 50 is in threaded connection with the first valve body 10, that is, the valve cap is provided with an internal threaded hole, and the first valve body 10 is provided with an external thread adapted to the internal threaded hole of the valve cap. A seal ring 80 is further installed between the valve cover 50 and the first valve body 10 to achieve sealing, preventing leakage of brake fluid.
In addition, a valve plate 60 covering the open end of the buffer sink is installed between the valve cover 50 and the first valve body 10, and the valve plate 60 and the buffer sink form a buffer cavity. And a deformation sink groove 51 is arranged on one side of the valve cover 50 close to the valve plate 60, and the deformation sink groove 51 is used as an accommodating space for accommodating deformation of the valve plate 60.
In this embodiment, a sealing plug 70 is disposed between the valve plate 60 and the first valve body, and preferably, the sealing plug is located between the bottom of the buffer sink groove and the valve plate, so as to prevent leakage of brake fluid. In this embodiment, the sealing plug 70 and the sealing ring 80 form a double seal to ensure that brake fluid does not leak out.
In this embodiment, the second valve body 20 is mounted in the second port 18. Preferably, the second valve body 20 is screwed with the second port 18, and a sealing ring 80 is provided between the second valve body 20 and the second port 18 to prevent leakage of brake fluid.
Wherein, the second valve body 20 is provided with a spool cavity 21 at one side of the second interface, and a third interface 22 communicated with the spool cavity is provided at the other side. The third port 22 is typically used to connect a clutch master cylinder via a line.
In this embodiment, the first valve core 30 is disposed in the valve core cavity 21, a flange 32 is disposed on a side of the first valve core 30 near the bottom of the second port, and a plurality of through holes 33 are disposed on the flange 32 along the circumferential direction. The flange 32 is provided with a first sealing surface 35 at one side close to the bottom of the second connector, a second sealing surface 17 at the bottom of the second connector, and a first bonding sealing structure is formed under the condition that the first sealing surface 35 is bonded with the second sealing surface 17.
Further, the first valve core 30 has therein a first valve hole 34 and a second valve hole 31, both of which axially penetrate the first valve core. Wherein the aperture of the first valve hole 34 is larger than the aperture of the second valve hole 31.
The first valve core is provided with two limit positions, wherein the first limit position is fit between the first sealing surface and the second sealing surface of the flange, and the second limit position is fit between the flange surface of one side of the flange, which is far away from the first sealing surface, and the end surface of the second valve body.
In this embodiment, a first elastic structure 90 is disposed between the side of the first valve core away from the first fitting sealing structure and the second valve body, and the first elastic structure 90 is preferably a spring. In a natural state, under the action of the elastic force of the first elastic structure 90, the first sealing surface 35 is attached to and sealed with the second sealing surface 17.
The second valve core 40 of the present embodiment includes a large diameter section 43 and a small diameter section 42, wherein the small diameter Duan Zi of the second valve core has a first valve hole disposed through the second valve hole, and a fluid gap is disposed between the small diameter section and the second valve hole.
In this embodiment, the step surface between the large diameter section 43 and the small diameter section 42 is a sealing surface three 41, the bottom of the first valve hole is a sealing surface four 36, and a second bonding seal structure is formed when the sealing surface three 41 is bonded to the sealing surface four 36.
In this embodiment, a second elastic structure 91 is disposed between the second valve core and the first valve body. Preferably, the second elastic structure 91 is a spring. In a natural state, the third sealing surface 41 and the fourth sealing surface 36 are bonded and sealed under the action of the elastic force of the second elastic structure 91. In this embodiment, the large diameter section 43 is provided with a spring limiting convex ring 44, and one end of the spring is limited by the spring limiting convex ring 44.
The working principle of the device for eliminating static and dynamic hydraulic fluctuation in the embodiment is as follows:
The third interface is connected with the clutch master cylinder, and the first interface is connected with the clutch slave cylinder. In a natural state, the state is shown in fig. 4, the pressure of the clutch master cylinder end and the pressure of the clutch slave cylinder end are balanced, at this time, the first lamination sealing structure and the second lamination sealing structure are both in lamination sealing states, and the brake fluid passage is in a disconnection state.
When the clutch pedal is depressed, as shown in fig. 5, the brake fluid flows from the clutch master cylinder to the clutch slave cylinder, and in this state, the second fitting seal structure is disengaged under pressure, the second elastic structure is compressed, the brake fluid passage is opened, and the brake fluid flows through the fluid flow gap between the small-diameter section of the second valve spool and the second valve hole of the first valve spool. In the process, dynamic hydraulic fluctuation is formed, the dynamic hydraulic fluctuation enters the buffer cavity from the third liquid flow channel and the first liquid flow channel, and the valve plate deforms under the action of the hydraulic fluctuation and protrudes into the deformation sink. Dynamic hydraulic fluctuation is absorbed and eliminated through the valve plate, so that brake fluid flowing to the clutch slave cylinder is ensured to be gentle.
When the clutch pedal is stopped at a certain middle position, the pressure of the clutch master cylinder end and the pressure of the clutch slave cylinder end are balanced, the second fitting sealing structure is restored to the fitting sealing state under the action of the restoring force of the second elastic structure, the state is as shown in fig. 4, brake fluid is blocked at the positions of the first valve core and the second valve core, under the state, the clutch slave cylinder end generates hydraulic fluctuation to the clutch master cylinder end, the hydraulic fluctuation is static hydraulic fluctuation, and the static hydraulic fluctuation is blocked at the positions of the first valve core and the second valve core in the transmission process.
When the clutch pedal is released, as shown in fig. 6, the brake fluid flows reversely, and flows from the clutch cylinder end to the clutch master cylinder end, at this time, under the action of pressure, the first attaching sealing structure is detached from the attaching, and the second attaching sealing structure is in an attaching sealing state. Dynamic hydraulic fluctuation generated in the state is absorbed and eliminated by the valve plate, so that the brake fluid flowing into the clutch master cylinder is ensured to be gentle.
When the clutch pedal stays at a certain middle position in the releasing process, the pressure of the clutch master cylinder end and the pressure of the clutch slave cylinder end are balanced, the first attaching sealing structure is restored to the attaching sealing state under the action of the restoring force of the first elastic structure, the state is as shown in fig. 4, brake fluid is blocked at the positions of the first valve core and the second valve core, in the state, the hydraulic fluctuation of the clutch slave cylinder end is generated, namely, the static hydraulic fluctuation is generated, and in the transmitting process, the static hydraulic fluctuation is blocked at the positions of the first valve core and the second valve core.
In summary, the device for eliminating static and dynamic hydraulic fluctuation of the embodiment integrates the functions of eliminating dynamic hydraulic fluctuation and static hydraulic fluctuation, and has high functional integration level, compact structure and small occupied space. Even in compact vehicle models, there is enough space available for installation so that the vehicle can avoid adverse effects due to static and dynamic hydraulic fluctuations.
In summary, the foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. An apparatus for eliminating static and dynamic hydraulic fluctuations, comprising at least:
The first valve body (10) is provided with a first interface (14), a second interface (18), a buffer sink (13) and a first liquid flow channel (11), one end of the first liquid flow channel is communicated with the buffer sink, the first liquid flow channel is communicated with the first interface through a second liquid flow channel (12), and the first liquid flow channel is communicated with the second interface through a third liquid flow channel (15);
The valve cover (50) is arranged at one end of the first valve body, which is provided with a buffering sink groove, a valve plate (60) is arranged between the valve cover and the first valve body, the valve plate covers the opening end of the buffering sink groove to form a buffering cavity, and one side of the valve cover, which is close to the valve plate, is provided with a deformation sink groove (51);
The second valve body (20) is arranged in the second interface, one side of the second interface of the second valve body is provided with a valve core cavity (21), and the other side of the second valve body is provided with a third interface (22) communicated with the valve core cavity;
the first valve core (30) is arranged in the valve core cavity, a first fitting sealing structure is arranged between the first valve core and the bottom of the second interface, a first elastic structure (90) is arranged between one side, away from the first fitting sealing structure, of the first valve core and the second valve body, a first valve hole (34) and a second valve hole (31) are axially and penetratingly arranged in the first valve core, and the aperture of the first valve hole is larger than that of the second valve hole;
The second valve core (40), the second valve core includes big footpath section (43) and path section (42), the path Duan Zi first valve opening of second valve core passes the setting of second valve opening, be equipped with the liquid flow clearance between path section and the second valve opening, be equipped with the second between the hole bottom of big footpath section and first valve opening and laminate seal structure, be equipped with second elastic structure (91) between second valve core and the first valve body.
2. Device for eliminating static and dynamic hydraulic pressure fluctuations according to claim 1, characterized in that a sealing plug (70) is arranged between the valve plate and the first valve body.
3. Device for eliminating static and dynamic hydraulic pressure fluctuations according to claim 1, characterized in that a sealing ring (80) is arranged between the valve cover and the first valve body.
4. Device for eliminating static and dynamic hydraulic pressure fluctuations according to claim 1, characterized in that a sealing ring (80) is arranged between the second valve body and the second interface.
5. A device for eliminating static and dynamic hydraulic pressure oscillations according to any of claims 1-4, characterized in that said valve cover is screwed to the first valve body and/or said second valve body is screwed to the second interface.
6. An apparatus for eliminating static and dynamic hydraulic fluctuations, comprising at least:
The first valve body (10) is provided with a first interface (14), a second interface (18), a buffer sink (13) and a first liquid flow channel (11); one end of the first liquid flow channel is communicated with the buffer sink, and the other end of the first liquid flow channel is communicated with the second interface through a third liquid flow channel (15); the first interface is communicated with the buffer sinking groove through a second liquid flow channel (12);
The valve cover (50) is arranged at one end of the first valve body, which is provided with a buffering sink groove, a valve plate (60) is arranged between the valve cover and the first valve body, the valve plate covers the opening end of the buffering sink groove to form a buffering cavity, and one side of the valve cover, which is close to the valve plate, is provided with a deformation sink groove (51);
The second valve body (20) is arranged in the second interface, one side of the second interface of the second valve body is provided with a valve core cavity (21), and the other side of the second valve body is provided with a third interface (22) communicated with the valve core cavity;
the first valve core (30) is arranged in the valve core cavity, a first fitting sealing structure is arranged between the first valve core and the bottom of the second interface, a first elastic structure (90) is arranged between one side, away from the first fitting sealing structure, of the first valve core and the second valve body, a first valve hole (34) and a second valve hole (31) are axially and penetratingly arranged in the first valve core, and the aperture of the first valve hole is larger than that of the second valve hole;
The second valve core (40), the second valve core includes big footpath section (43) and path section (42), the path Duan Zi first valve opening of second valve core passes the setting of second valve opening, be equipped with the liquid flow clearance between path section and the second valve opening, be equipped with the second between the hole bottom of big footpath section and first valve opening and laminate seal structure, be equipped with second elastic structure (91) between second valve core and the first valve body.
7. Device for eliminating static and dynamic hydraulic pressure fluctuations according to claim 6, characterized in that a sealing plug (70) is arranged between the valve plate and the first valve body.
8. The apparatus for eliminating static and dynamic hydraulic pressure fluctuations according to claim 6, wherein a sealing ring (80) is provided between the valve cover and the first valve body.
9. The apparatus for eliminating static and dynamic hydraulic pressure fluctuations according to claim 6, wherein a sealing ring (80) is provided between the second valve body and the second port.
10. Device for eliminating static and dynamic hydraulic oscillations according to any of claims 6-9, characterized in that said valve cover is screwed to the first valve body and/or said second valve body is screwed to the second interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816428.6A CN110425192B (en) | 2019-08-30 | 2019-08-30 | Device for eliminating static and dynamic hydraulic fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816428.6A CN110425192B (en) | 2019-08-30 | 2019-08-30 | Device for eliminating static and dynamic hydraulic fluctuation |
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| CN110425192A CN110425192A (en) | 2019-11-08 |
| CN110425192B true CN110425192B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910816428.6A Active CN110425192B (en) | 2019-08-30 | 2019-08-30 | Device for eliminating static and dynamic hydraulic fluctuation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1067310A (en) * | 1996-08-28 | 1998-03-10 | Aisin Seiki Co Ltd | Brake hydraulic pressure modulator for vehicle |
| CN201202747Y (en) * | 2008-04-29 | 2009-03-04 | 浙江万安科技股份有限公司 | Buffering valve assembly |
| CN204921520U (en) * | 2015-09-06 | 2015-12-30 | 上海鑫孚汽车科技有限公司 | Cushion valve |
| CN205841605U (en) * | 2015-06-17 | 2016-12-28 | 福伊特专利有限公司 | The vehicle guided for the equipment and rail that weaken pressure |
| CN210397295U (en) * | 2019-08-30 | 2020-04-24 | 浙江诸暨万宝机械有限公司 | Device for eliminating static and dynamic hydraulic fluctuation |
-
2019
- 2019-08-30 CN CN201910816428.6A patent/CN110425192B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1067310A (en) * | 1996-08-28 | 1998-03-10 | Aisin Seiki Co Ltd | Brake hydraulic pressure modulator for vehicle |
| CN201202747Y (en) * | 2008-04-29 | 2009-03-04 | 浙江万安科技股份有限公司 | Buffering valve assembly |
| CN205841605U (en) * | 2015-06-17 | 2016-12-28 | 福伊特专利有限公司 | The vehicle guided for the equipment and rail that weaken pressure |
| CN204921520U (en) * | 2015-09-06 | 2015-12-30 | 上海鑫孚汽车科技有限公司 | Cushion valve |
| CN210397295U (en) * | 2019-08-30 | 2020-04-24 | 浙江诸暨万宝机械有限公司 | Device for eliminating static and dynamic hydraulic fluctuation |
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| Publication number | Publication date |
|---|---|
| CN110425192A (en) | 2019-11-08 |
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Address after: 311835 Industrial Zone of Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Wanan Zhiyu Automobile Control System Co.,Ltd. Address before: 311835 Industrial Zone of Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant before: ZHEJIANG ZHUJI MANPOWER MACHINERY CO.,LTD. |
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