CN213928958U - Unequal flow limiting valve - Google Patents
Unequal flow limiting valve Download PDFInfo
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- CN213928958U CN213928958U CN202022477472.XU CN202022477472U CN213928958U CN 213928958 U CN213928958 U CN 213928958U CN 202022477472 U CN202022477472 U CN 202022477472U CN 213928958 U CN213928958 U CN 213928958U
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Abstract
The unequal flow limiting valve comprises a valve body, a valve cover and a valve core, wherein the valve core is arranged in the valve body, the valve cover is installed on the valve body, the valve core can limit the flow of fluid flowing into the valve body from the valve body side and the valve cover side, and the valve core can relieve the flow limitation on the valve body side under the pushing of the fluid on the valve body side. The utility model discloses an it can be as an organic whole with the check valve in the hydraulic pressure pipeline with the restriction valve not to wait the restriction valve, can be applied to the hydraulic pressure oil circuit of simulation car brake pedal hydraulic simulator, for brake pedal provides the characteristic that journey damping feels and quick return, simple structure, low to the processing demand of hydraulic pressure pipeline, and low in process cost when reducing product cost, it is sluggish to provide good damping and return for driver's brake pedal impression.
Description
Technical Field
The utility model relates to an automobile brake system technical field especially relates to an unequal restriction valve.
Background
Hydraulic brake systems are important components in motor vehicles such as automobiles. In a hydraulic pedal simulation system, it is common design to achieve the improvement of pedal feel quality by damping feel of pedal progress generated by limiting hydraulic pressure and controlling the flow speed of oil, but such design also causes damping feel caused by the flow limiting effect generated in the process of feeding oil back to the original place when a pedal returns, and this phenomenon may cause bad feelings such as slow pedal return, abnormal pedal feel when a brake pedal is continuously and quickly stepped on, and the like. In order to solve the problem, the existing hydraulic pedal simulator is generally provided with two hydraulic pipelines, wherein one pipeline is provided with a flow limiting valve, the other pipeline is provided with a one-way valve, when a pedal goes, the one-way valve is sealed, oil can only pass through the flow limiting valve, so that a flow stopping effect is formed, and pedal damping is provided; when the brake pedal returns, the one-way valve is switched on, and the oil can return quickly, so that the scheme is complex and high in structure, two oil ways and two hydraulic valves are needed, and the processing cost and the material cost are high.
Disclosure of Invention
In view of this, the utility model provides a non-peer restriction valve that combines check valve and restriction valve function.
The utility model discloses an it includes valve body, valve gap and case not to wait restriction valve, the case is located in the valve body, the valve gap install in on the valve body, the case can be right the valve body side with the valve gap side flows in fluid in the valve body carries out the current-limiting, the case can by it is right under the promotion of the fluid that the valve body side got into relieve the current-limiting of valve body side.
Furthermore, the valve core comprises a valve core body and an elastic element, the valve core body abuts against the valve body, the elastic element is fixed on the valve cover, and two ends of the elastic element respectively abut against the valve core body and the valve cover.
Further, the valve body comprises a first contact surface, the first contact surface is a conical surface which is arranged on the inner wall of the valve body and gradually contracted from the valve cover side to the valve body side, and the first contact surface is attached and sealed with the valve core under the pressure action of the elastic element.
Further, the valve core body is limited in the valve body by the first contact surface along the axial direction of the unequal flow limiting valve.
Further, the valve core comprises a second contact surface, and the second contact surface is a conical surface which is arranged on the outer wall of the valve core and gradually shrinks from the elastic element side to the valve core body side.
Further, the valve core body is in fit sealing with the first contact surface through the second contact surface.
Further, the valve element further includes a third contact surface, and the valve element is in contact with the fluid on the valve body side through the third contact surface.
Further, the valve body comprises a first through hole, the first through hole is formed in the top of the valve body, fluid can flow into the valve body or flow out of the valve body through the first through hole, and the sectional area of the first through hole is larger than or equal to that of the third contact surface.
Further, the valve core further comprises a second through hole, fluid of the second through hole can flow into the valve body or flow out of the valve body from the valve core through the second through hole, and the sectional area of the second through hole is smaller than that of the third contact surface.
Further, the valve cover includes a third through hole through which fluid can flow from the valve cover into or out of the valve body.
The utility model discloses a not waiting restriction valve is through the case that sets up including elastic element in the valve body, can be by the current-limiting all the time when making fluid flow in the valve body from the valve cover side, nevertheless if reach certain pressure then remove this side current-limiting when flowing in the valve body from the valve body side, realized the not waiting current-limiting to valve body side flow and valve cover side fluidic. The utility model discloses an it can be as an organic whole with the check valve in the hydraulic pressure pipeline with the restriction valve not to wait the restriction valve, can be applied to the hydraulic pressure oil circuit of simulation car brake pedal hydraulic simulator, for brake pedal provides the characteristic that journey damping feels and quick return, simple structure, low to the processing demand of hydraulic pressure pipeline, and low in process cost when reducing product cost, it is sluggish to provide good damping and return for driver's brake pedal impression.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of an unequal flow-limiting valve provided by the present invention.
Fig. 2 is an isometric view of an unequal flow-limiting valve according to the present invention.
Fig. 3 is a schematic diagram of the valve core of the unequal flow-limiting valve according to the present invention pushed open.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 and 2, the unequal flow limiting valve device of the present invention is located in a hydraulic brake system, and includes a valve body 1, a valve cover 2 and a valve core 3, the valve core 3 is disposed in the valve body 1, and the valve cover 2 is mounted on the valve body 1. The connection mode of the valve cover 2 and the valve core 3 includes but is not limited to riveting, welding, screwing or press-fitting with the valve body 1.
Further, the valve core 3 includes a valve core body 31 and an elastic element 32, the valve core body 31 abuts against the valve body 1, the elastic element 32 is fixed on the valve cover 2, two ends of the elastic element 32 respectively abut against the valve core body 31 and the valve cover 2, and in this embodiment, the elastic element 32 may be a spring, rubber, engineering plastic or other structures with similar effects.
Referring to fig. 3, further, the valve body 1 includes a first contact surface 41, the first contact surface 41 is a conical surface that is disposed on an inner wall of the valve body 1 and gradually converges from the bonnet 2 side to the valve body 1 side, the first contact surface 41 is in close contact with the valve core 3 under the pressure of the elastic element 32, the valve core body 31 is axially limited in the valve body 1 by the first contact surface 41 along the unequal flow limiting valve, in practical use, as the fluid pressure on the bonnet 2 side is greater than that on the valve body 1 side, the valve body 1 and the valve core 3 are in closer contact, in this embodiment, the first contact surface 41 is a conical surface, and in other embodiments, the first contact surface 41 may also be a spherical surface, a curved surface, or a cambered surface, so long as to ensure that the first contact surface can be in close contact with the surface of the valve core 3.
Further, the valve element 3 includes a second contact surface 42, the second contact surface 42 is a conical surface that is disposed on the outer wall of the valve element 3 and gradually narrows from the elastic element 32 side to the valve element body 31 side, and the valve element body 31 is sealed by the second contact surface 42 and the first contact surface 41 in a fitting manner.
Further, the valve core 3 further includes a third contact surface 43, the valve core 3 contacts with the fluid on the valve body 1 side through the third contact surface 43, when the fluid flows from the valve body 1 side to the bonnet 2 side, the fluid enters the valve body 1 and then contacts with the third contact surface 43 first, when the pressure on the valve body 1 side of the third contact surface 43 is greater than the pressure on the bonnet 2 side and the pressure difference is greater than the pressure threshold value, the elastic element 32 is compressed, the first contact surface 41 and the second contact surface 42 are separated, a gap is formed between the valve core body 31 and the valve body 1, and the fluid can flow through the gap, in this embodiment, the magnitude of the pressure threshold value is related to the pre-tightening force of the elastic element 32 and the sectional area of the third contact surface 43.
Further, the valve body 1 includes a first through hole 51, the first through hole 51 is disposed at the top of the valve body 1, the fluid can flow into the valve body 1 or flow out from the valve body 1 through the first through hole 51, and the cross-sectional area of the first through hole 51 is greater than or equal to the cross-sectional area of the third contact surface 43.
Further, the valve core 3 further includes a second through hole 52, the fluid in the second through hole 52 can flow from the valve core 3 into the valve body 1 or flow out from the valve body 1 through the second through hole 52, and the cross-sectional area of the second through hole 52 is smaller than the cross-sectional area of the third contact surface 43.
Further, the bonnet 2 includes a third through hole 53, and the fluid can flow from the bonnet 2 into the inside of the valve body 1 or flow out from the inside of the valve body 1 through the third through hole 53.
Specifically, if fluid enters the valve body 1 from the bonnet 2 side through the third through hole 53, the elastic element 32 is defaulted to make the valve core body 31 fit with the valve body 1, and the fluid can only pass through the second through hole 52 and then be discharged through the first through hole 51; if fluid enters the valve body 1 from the valve body 1 side through the first through hole 51, the fluid first contacts the third contact surface 43 after entering the valve body 1, when the pressure on the valve body 1 side applied to the third contact surface 43 is greater than the pressure on the bonnet 2 side and the pressure difference is greater than the pressure critical value, that is, the force applied to the valve core body 31 is enough to overcome the pre-tightening force of the elastic element 32, the elastic element 32 is compressed, the first contact surface 41 and the second contact surface 42 are separated, a gap is formed between the valve core body 31 and the valve body 1, and the fluid can circulate through the gap, that is, the valve core 3 releases the flow restriction on the valve body 1 side under the pushing of the fluid on the valve body 1 side.
To sum up, the utility model discloses an unequal flow limiting valve can be by the current-limiting all the time when making fluid flow in the valve body from the valve bonnet side through set up the case including elastic element in the valve body, nevertheless if reach certain pressure then remove this side current-limiting when flowing in the valve body from the valve body side, has realized the unequal current-limiting to valve body side flow and valve bonnet side fluid. The utility model discloses an it can be as an organic whole with the check valve in the hydraulic pressure pipeline with the restriction valve not to wait the restriction valve, can be applied to the hydraulic pressure oil circuit of simulation car brake pedal hydraulic simulator, for brake pedal provides the characteristic that journey damping feels and quick return, simple structure, low to the processing demand of hydraulic pressure pipeline, and low in process cost when reducing product cost, it is sluggish to provide good damping and return for driver's brake pedal impression.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.
Claims (10)
1. An unequal flow-limiting valve is characterized in that: the unequal throttling valve comprises a valve body (1), a valve cover (2) and a valve core (3), wherein the valve core (3) is arranged in the valve body (1), the valve cover (2) is arranged on the valve body (1), the valve core (3) can limit the flow of fluid flowing into the valve body (1) from the side of the valve body (1) and the side of the valve cover (2), and the valve core (3) can relieve the flow limitation from the side of the valve body (1) under the pushing of the fluid entering from the side of the valve body (1).
2. The unequal flow restriction valve according to claim 1, wherein: the valve core (3) comprises a valve core body (31) and an elastic element (32), the valve core body (31) is abutted against the valve body (1), the elastic element (32) is fixed on the valve cover (2), and two ends of the elastic element (32) are respectively abutted against the valve core body (31) and the valve cover (2).
3. The unequal flow restriction valve according to claim 2, wherein: the valve body (1) comprises a first contact surface (41), the first contact surface (41) is a conical surface which is arranged on the inner wall of the valve body (1) and gradually contracted from the side of the valve cover (2) to the side of the valve body (1), and the first contact surface (41) is attached and sealed with the valve core (3) under the pressure action of the elastic element (32).
4. The unequal flow restriction valve according to claim 3, wherein: the valve core body (31) is limited in the valve body (1) by the first contact surface (41) along the axial direction of the unequal throttling valve.
5. The unequal flow restriction valve according to claim 4, wherein: the valve core (3) comprises a second contact surface (42), and the second contact surface (42) is a conical surface which is arranged on the outer wall of the valve core (3) and gradually shrinks from the elastic element (32) side to the valve core body (31) side.
6. The unequal flow restriction valve according to claim 5, wherein: the valve core body (31) is in fit sealing with the first contact surface (41) through the second contact surface (42).
7. The unequal flow restriction valve according to claim 6, wherein: the valve element (3) further comprises a third contact surface (43), and the valve element (3) is in contact with the fluid on the valve body (1) side through the third contact surface (43).
8. The unequal flow restriction valve according to claim 7, wherein: the valve body (1) comprises a first through hole (51), the first through hole (51) is formed in the top of the valve body (1), fluid can flow into the valve body (1) or flow out of the valve body (1) through the first through hole (51), and the sectional area of the first through hole (51) is larger than or equal to that of the third contact surface (43).
9. The unequal flow restriction valve according to claim 8, wherein: the valve core (3) further comprises a second through hole (52), fluid in the second through hole (52) can flow into the valve body (1) or flow out of the valve body (1) from the valve core (3) through the second through hole (52), and the sectional area of the second through hole (52) is smaller than that of the third contact surface (43).
10. The unequal flow restriction valve according to claim 9, wherein: the valve cover (2) comprises a third through hole (53), and fluid can flow from the valve cover (2) into the valve body (1) or flow out of the valve body (1) through the third through hole (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022477472.XU CN213928958U (en) | 2020-10-29 | 2020-10-29 | Unequal flow limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022477472.XU CN213928958U (en) | 2020-10-29 | 2020-10-29 | Unequal flow limiting valve |
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| Publication Number | Publication Date |
|---|---|
| CN213928958U true CN213928958U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022477472.XU Active CN213928958U (en) | 2020-10-29 | 2020-10-29 | Unequal flow limiting valve |
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| CN (1) | CN213928958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757293A (en) * | 2021-09-15 | 2021-12-07 | 常州开发减震器有限公司 | Piston for shock absorber and shock absorber |
-
2020
- 2020-10-29 CN CN202022477472.XU patent/CN213928958U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757293A (en) * | 2021-09-15 | 2021-12-07 | 常州开发减震器有限公司 | Piston for shock absorber and shock absorber |
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