Integrated liquid supplementing one-way valve for brake-by-wire, liquid supplementing loop and braking system
By designing a line-controlled integrated fluid replenishment check valve in the braking system, the overflow channel and elastic parts are used to reduce the valve core movement resistance, and the one-way guide effect of sealing and fast response is achieved, solving the problem of inaccurate movement caused by the large valve core resistance in the prior art.
Patent Information
- Application Number
- CN202421704683.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-18
AI Technical Summary
In the existing braking system, the valve core of the fluid replenishing one-way valve needs to reduce the diameter of the liquid inlet to achieve a one-way seal when the oil path is unchanged, resulting in large resistance during movement, affecting the accuracy of the movement and response speed.
A line-controlled integrated liquid replenishment check valve is designed to reduce the movement resistance of the valve core by setting up an overflow channel and elastic parts inside the valve body body, and a sealing surface and limiting surface are set between the valve core and the valve body to realize one-way flow guidance.
The resistance of the valve core when moving inside the valve body is reduced, the accuracy of the movement and response speed are improved, and the sealing is ensured.
Smart Images
Figure CN223045727U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid filling one-way valves, in particular to an integrated liquid filling one-way valve for wire control use, a liquid filling circuit and a braking system. Background Art
[0002] A one-way valve is a valve through which fluid can only flow along the inlet, and the medium at the outlet cannot flow back. It is commonly known as a one-way valve, also known as a check valve or a non-return valve. It is used in a hydraulic system to prevent the reverse flow of oil, or in a pneumatic system to prevent the reverse flow of compressed air. There are two types of one-way valves: straight-through type and right-angle type. The straight-through one-way valve is installed on the pipeline by threaded connection, and the right-angle one-way valve has three forms: threaded connection, plate connection and flange connection.
[0003] A charge valve is a pilot-operated one-way valve that stops the flow in one direction and allows free flow in the other direction. The pilot action is realized by a control spool pressurized by the oil supply, which directly opens the main valve. This valve is designed for a stacking system, that is, various other types of hydraulic valves can be stacked on a basic component.
[0004] In the existing liquid filling one-way valve applied to a braking system, a spherical spool is used. When the diameter of the oil passage remains unchanged, the diameter of the liquid inlet needs to be reduced to achieve the effect of one-way sealing. At the same time, when the spherical spool moves inside the valve body, in order to maintain its sealing performance, the resistance it encounters during movement is relatively large, which affects the movement of the spool, resulting in inaccurate and insensitive operation of the entire device and a slow response speed. Summary of the Utility Model
[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a liquid filling one-way valve that can reduce resistance and ensure its sealing performance.
[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows: An integrated liquid filling one-way valve for wire control use includes a valve body main body, a valve seat and a spool. A cavity extending in the up and down direction is provided inside the valve body main body. The valve seat is fixedly assembled at the upper end of the valve body main body. The valve seat is provided with a liquid inlet passage that penetrates through it up and down and communicates with the cavity. The spool is slidably assembled in the cavity in the up and down direction. The valve body main body is provided with a placement cavity communicating with the cavity below the cavity. A liquid leakage port is opened at the lower end of the placement cavity. An elastic member is provided inside the placement cavity, and the elastic member is connected between the lower end of the valve body main body and the spool. A conical limiting surface is provided at the position corresponding to the lower end of the cavity on the inner side wall of the valve body main body. The lower end of the spool is provided with a contact surface that fits the shape of the sealing surface. A plurality of liquid outlet holes communicating with the cavity are provided on the side wall of the valve body main body. A plurality of flow channels extending up and down are arranged at intervals along the circumferential direction of the outer surface of the spool.
[0007] The beneficial effects of the utility model are as follows: through the valve body and the valve core, when the valve core slides up and down in the cavity inside the valve core body, the flow channel can allow the brake fluid to pass through the flow channel without affecting the sealing performance when the fitting surface and the sealing surface conflict with each other, thereby reducing the resistance encountered by the valve core when it moves inside the valve body body, and at the same time, by providing a valve body shell and a valve seat, and fixing the two together, the liquid inlet channel and the liquid leakage port are respectively provided on the valve seat and the valve body shell, and the liquid outlet port is provided between the liquid inlet port and the liquid leakage port, so that when the valve core moves upward to conflict with the sealing surface, the brake fluid will not flow out from the liquid outlet port and the liquid leakage port, when the valve core moves downward to conflict with the limit surface, the brake fluid flows out from the liquid outlet port, and will not leak from the liquid leakage port, and when the valve core is between the two, part of the brake fluid flows out from the liquid leakage port, and flows to the rear end oil circuit together with the brake fluid flowing out of the liquid outlet port.
[0008] On the basis of the above technical solution, the present invention can also be improved as follows.
[0009] Furthermore, the flow channel is a strip-shaped groove.
[0010] The above technical solution sets up a flow passage, and utilizes the flow passage to allow brake fluid to pass through the flow passage when the valve core moves up and down, thereby reducing the resistance encountered by the valve core itself when moving.
[0011] Furthermore, the elastic member is a columnar spring, and the upper and lower ends of the elastic member are respectively connected and fixed to the valve core and the valve body.
[0012] The above technical solution provides a columnar spring and utilizes the elastic expansion and contraction characteristics of the columnar spring, so that the valve core can move up and down inside the valve body and achieve a unidirectional flow guide.
[0013] Furthermore, a conical sealing surface is provided at the lower end of the liquid inlet channel, and a conical fitting surface matching the sealing surface is provided at the outer edge of the upper end of the valve core.
[0014] The above technical solution achieves sealing by setting the sealing surface and the fitting surface to fit each other, and under the elastic force of the elastic member, prevents the brake fluid from leaking from the liquid inlet channel, thereby achieving the effect of unidirectional flow guidance.
[0015] Furthermore, the diameter of the cavity is larger than the diameter of the placement cavity, the lower end of the cavity is transitionally connected to the placement cavity via the conical limiting surface, and the lower end of the valve core is provided with the conical contact surface.
[0016] The above technical solution prevents the internal valve core from moving downward under the action of hydraulic pressure by making the limit surface and the contact surface fit each other, thereby achieving the function of limiting the displacement of the valve core.
[0017] The second object of the present utility model is to provide a liquid replenishment oil circuit equipped with a liquid replenishment one-way valve with small resistance and good sealing performance.
[0018] To achieve the above object, the technical solution of the present utility model is as follows: A wire-controlled braking liquid replenishment circuit includes a liquid replenishment oil circuit, a plunger pump oil circuit, and a wheel cylinder assembly. An integrated liquid replenishment one-way valve for wire control is arranged inside the liquid replenishment oil circuit, and the plunger pump oil circuit is communicated with the liquid replenishment oil circuit and the wheel cylinder assembly.
[0019] Through the above technical solution, by setting the liquid replenishment circuit and arranging the liquid replenishment one-way valve in the liquid replenishment oil circuit, the liquid replenishment oil circuit can quickly respond and act when the braking system needs to be replenished with liquid.
[0020] Further, the liquid replenishment oil circuit includes an oil circuit block, an oil pot, a first oil circuit, and a second oil circuit. The integrated liquid replenishment one-way valve for wire control is arranged in the oil circuit of the oil circuit block. The oil outlet of the oil pot is communicated with the oil inlet of the first oil circuit, the oil outlet of the first oil circuit is communicated with the oil port of the oil circuit of the oil circuit block, the oil outlet of the oil circuit of the oil circuit block is communicated with the oil inlet of the second oil circuit, and the oil outlet of the second oil circuit is communicated with the plunger pump oil circuit.
[0021] Through the above technical solution, by setting the first oil circuit and the second oil circuit at the oil inlet and oil outlet of the oil circuit block respectively, when the oil circuit block is assembled in the oil circuit, the liquid replenishment oil circuit can supply the brake fluid more quickly.
[0022] Further, the plunger pump oil circuit includes a plunger pump chamber, a plunger pump piston, a control motor, and a third oil circuit. The oil inlet of the plunger pump chamber is communicated with the oil outlet of the second oil circuit. The piston end of the plunger pump piston is arranged in the plunger pump chamber, and the other end is connected to the driving rod of the control motor. The oil outlet of the plunger pump chamber is communicated with the oil inlet of the third oil circuit, and the oil outlet of the third oil circuit is communicated with the wheel cylinder assembly.
[0023] Through the above technical solution, by setting the plunger pump chamber and the plunger pump piston, when the brake system needs to be replenished with brake fluid, the plunger pump piston moves, increasing the space inside the plunger pump chamber, thereby forming a pressure difference between the oil inlet and oil outlet of the oil circuit block, guiding the brake fluid in the oil pot to flow out and enter the brake system.
[0024] Further, the wheel cylinder assembly includes a control valve and a wheel cylinder. The control valve is arranged in the third oil circuit, and the oil inlet of the wheel cylinder is communicated with the oil outlet of the third oil circuit.
[0025] In the above technical solution, after the brake fluid flows out, by controlling the opening of the control valve, the brake fluid can enter the wheel cylinder to achieve the braking effect.
[0026] A third object of the present utility model is to provide a braking system provided with a wire-controlled brake fluid replenishment circuit.
[0027] To achieve the above object, the technical solution of the present utility model is as follows: A braking system includes a wire-controlled brake fluid replenishment circuit
[0028] In the above technical solution, the replenishment return flow is arranged in the braking system and communicated with the brake in the braking system, so that the braking system can respond more quickly and perform braking work. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is a schematic three-dimensional structure diagram in an embodiment of the present utility model;
[0030] Figure 2 is a schematic plan sectional view in an embodiment of the present utility model;
[0031] Figure 3 is an enlarged schematic view of the valve body connection in an embodiment of the present utility model;
[0032] Figure 4 is a schematic diagram of the brake fluid flow direction in an embodiment of the present utility model;
[0033] Figure 5 is a schematic three-dimensional diagram of the valve core in an embodiment of the present utility model;
[0034] Figure 6 is a schematic diagram of the braking system during fluid replenishment in an embodiment of the present utility model;
[0035] Figure 7 is a schematic diagram of the braking system fluid replenishment operation in an embodiment of the present utility model.
[0036] In the drawings, the list of components represented by each reference numeral is as follows:
[0037] 1, valve seat; 2, valve core; 3, elastic member; 31, first bevel edge; 32, rounded corner; 33, straight edge; 34, second bevel edge; 4, valve body main body; 7, fitting surface; 8, sealing surface; 11, oil circuit block; 15, liquid outlet hole; 17, contact surface; 18, limiting surface; 19, flow-through channel; 20, control motor; 21, plunger pump piston; 22, plunger pump chamber; 23, second oil circuit; 24, first oil circuit; 25, oil pot; 28, third oil circuit; 29, control valve; 30, wheel cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0038] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.
[0039] Example
[0040] like Figure 1-7 As shown, an integrated liquid replenishing one-way valve for line control actuation includes a valve body 4, a valve seat 1 and a valve core 2, wherein the valve body 4 is provided with a cavity extending in the up-down direction, the valve seat 1 is fixedly assembled on the upper end of the valve body 4, the valve seat 1 is provided with a liquid inlet channel penetrating therethrough and communicating with the cavity, the valve core 2 is slidably assembled in the cavity along the up-down direction, the valve body 4 is provided with a placement cavity communicated with the cavity below the cavity, a liquid leakage port is opened at the lower end of the placement cavity, an elastic member 3 is provided inside the placement cavity, the elastic member 3 is connected between the lower end of the valve body 4 and the valve core 2, a conical limiting surface 18 is provided at the position of the inner side wall of the valve body 4 corresponding to the lower end of the cavity, a contact surface 17 matching the shape of the sealing surface is provided at the lower end of the valve core 2, a plurality of liquid outlet holes 15 communicating with the cavity are provided on the side wall of the valve body 4, and a plurality of flow passages 19 extending up-down are provided at intervals along its annular direction on the outer surface of the valve core 2.
[0041] The working principle is: when the valve core 2 moves downward inside the valve body 4 due to the pressure difference, Figure 3 As shown, the brake fluid enters the valve body 4 from the P1 port. Since the lower end of the valve core 2 is in contact with the sealing surface of the lower end of the valve body 4, the brake fluid can only flow out from the liquid outlet 15, thereby realizing the supply and outflow of the brake fluid. When the pressure on both sides of P1 and P2 is restored, the valve core 2 is automatically lifted upward due to the elastic force of the elastic member 3, so that the valve core 2 can block the P1 port, thereby realizing the unidirectional conduction of the brake fluid.
[0042] The above technical solution can be achieved through the valve body 4 and the valve core 2. When the valve core 2 slides up and down in the cavity inside the valve core body 4, the flow channel 19 can allow the brake fluid to pass through the flow channel 19 without affecting the sealing performance when the fitting surface and the sealing surface conflict with each other, thereby reducing the resistance encountered by the valve core 2 when it moves inside the valve body 4. At the same time, by setting the valve body shell and the valve seat 1 and fixing the two together, the liquid inlet and the liquid leakage port are respectively set on the valve seat 1 and the valve body shell, and the liquid outlet 15 is set between the liquid inlet and the liquid leakage port, so that when the valve core 2 moves upward to conflict with the sealing surface, the brake fluid will not flow out from the liquid outlet 15 and the liquid leakage port. When the valve core 2 moves downward to conflict with the sealing surface, the brake fluid flows out from the liquid outlet 15 but does not leak out from the liquid leakage port. When the valve core 2 is between the two, part of the brake fluid flows out from the liquid leakage port and flows to the rear end oil circuit together with the brake fluid flowing out of the liquid outlet 15.
[0043] Preferably, the flow passage 19 is a strip-shaped groove extending in the up-down direction.
[0044] The working principle is as follows: By setting the overcurrent channel 19, when the valve core 2 moves up and down inside the valve body main body 4, the brake fluid can pass through the overcurrent channel 19, thereby reducing the resistance of the brake fluid itself to the valve core 2.
[0045] In the above technical solution, by setting the overcurrent channel 19, when the valve core 2 moves up and down, the brake fluid can pass through the overcurrent channel 19, thereby reducing the resistance suffered by the valve core 2 during its own movement.
[0046] Preferably, the elastic member 3 is a columnar spring, and the upper and lower ends of the elastic member 3 are respectively connected and fixed to the valve core 2 and the valve body main body 4.
[0047] The working principle is as follows: By setting the columnar spring, when the pressure difference returns to the normal value, using the elastic force of the elastic member 3 itself, the valve core 2 rebounds, so that the sealing surface 8 and the fitting surface 7 are mutually fitted. This avoids the backflow of the brake fluid.
[0048] In the above technical solution, by setting the columnar spring and utilizing the elastic telescopic characteristic of the columnar spring, the valve core 2 can move up and down inside the valve body main body 4, and the function of one-way flow guiding is realized.
[0049] Preferably, a conical sealing surface 8 is provided at the lower end of the liquid inlet channel, and a conical fitting surface 7 that matches the sealing surface 8 is provided at the outer edge of the upper end of the valve core 2.
[0050] The working principle is as follows: By setting the sealing surface 8 and the fitting surface 7, through the mutual fitting of the sealing surface 8 and the fitting surface 7, as shown in the attached drawings of the specification, it is possible to prevent the brake fluid from flowing back from the P2 port into the P1 port. Figure 2 As shown, it can prevent the brake fluid from flowing back from the P2 port into the P1 port.
[0051] In the above technical solution, by setting the sealing surface and the fitting surface to be mutually fitted, under the action of the elastic force of the elastic member, sealing is achieved, avoiding the leakage of the brake fluid from the liquid inlet channel, and realizing the function of one-way flow guiding.
[0052] Preferably, the diameter of the cavity is larger than the diameter of the placement cavity, the lower end of the cavity is connected to the placement cavity through a conical limiting surface 18 for transition, and a conical contact surface 17 is provided at the lower end of the valve core 2.
[0053] The working principle is as follows: By setting the limiting surface 18 and using the pressure difference to press down the valve core 2, the contact surface 17 and the limiting surface 18 are mutually limited, thereby preventing the valve core 2 from moving downward continuously.
[0054] In the above technical solution, by the mutual fitting of the limiting surface and the contact surface, it is avoided that the internal valve core moves downward under the action of the hydraulic pressure, thereby playing the function of restricting the displacement of the valve core.
[0055] Another object of the present utility model is to provide a fluid replenishment oil circuit equipped with a fluid replenishment one-way valve having small resistance and good sealing performance.
[0056] To achieve the above object, the technical solution of the present utility model is as follows: A wire-controlled brake fluid replenishment circuit includes a fluid replenishment oil circuit, a plunger pump oil circuit, and a wheel cylinder assembly. An integrated wire-controlled fluid replenishment one-way valve is provided inside the fluid replenishment oil circuit. The plunger pump oil circuit is communicated with the fluid replenishment oil circuit and the wheel cylinder assembly.
[0057] The working principle is as follows: By providing a fluid replenishment oil circuit, a plunger pump oil circuit, and a wheel cylinder assembly, when it is necessary to replenish brake fluid, the pressure difference between the fluid replenishment one-way valves P1 and P2 increases, so that the valve core 2 moves downward and compresses the elastic member. The brake fluid can enter the plunger pump oil circuit from the fluid replenishment oil circuit and finally enter the wheel cylinder assembly, realizing the fluid replenishment operation of the entire fluid replenishment circuit.
[0058] Through the above technical solution, by providing a fluid replenishment circuit and arranging the fluid replenishment one-way valve in the fluid replenishment oil circuit, the fluid replenishment oil circuit can quickly respond and act when it is necessary to replenish the brake system.
[0059] Preferably, the fluid replenishment oil circuit includes an oil circuit block 11, an oil pot 25, a first oil circuit 24, and a second oil circuit 23. The integrated wire-controlled fluid replenishment one-way valve is arranged on the oil circuit block 11. The oil outlet of the oil pot 25 is communicated with the oil inlet of the first oil circuit 24. The oil outlet of the first oil circuit 24 is communicated with the oil inlet of the oil circuit block 11. The oil outlet of the oil circuit block 11 is communicated with the oil inlet of the second oil circuit 23. The oil outlet of the second oil circuit 23 is communicated with the plunger pump oil circuit.
[0060] Among them, the valve body 1 is fixedly connected to the oil circuit block 11 by crimping through a U-shaped groove. The structural shape of the U-shaped groove is as Figure 2 and Figure 3 shown, consisting of a first bevel edge 31, a rounded corner 32, a straight edge 33, and a second bevel edge 34. The inclination angle of the second bevel edge is 45°. During assembly, the first bevel edge 31 extrudes the material of the oil circuit block 11 into the U-shaped groove, ensuring that the material is closely fitted with the U-shaped groove, ensuring that the one-way valve is fixed in the oil circuit block cavity under the action of the pressure at port P2 being greater than that at port P1, and a sealing conical surface is formed by the second bevel edge 34 to ensure the sealing performance.
[0061] The working principle is as follows: When it is necessary to replenish the brake fluid, as described in the appended Figure 2As shown, since the pressure at the P1 port is greater than that at the P2 port, the brake fluid flows out of the oil pot 15, passes through the first oil passage 24, enters the P1 port of the one-way valve, and pushes the valve core 2 downward. The valve core 2 drives the elastic member 3 to compress. The brake fluid can enter from the P1 port, pass through the liquid outlet hole 15, flow out of the one-way valve, and then flow out of the oil outlet of the oil passage block 11, enter the second oil passage 23, and enter the inside of the plunger pump chamber 22 through the second oil passage 23.
[0062] Through the above technical solution, by setting the first oil passage 24 and the second oil passage 23, and respectively arranging the first oil passage 24 and the second oil passage 23 at the oil inlet and oil outlet of the oil passage block 11, when the oil passage block 11 is assembled in the oil passage, the replenishing oil passage can supply the brake fluid more quickly.
[0063] Preferably, the plunger pump oil passage includes a plunger pump chamber 22, a plunger pump piston 21, a control motor 20, and a third oil passage 28. The oil inlet of the plunger pump chamber 22 is communicated with the oil outlet of the second oil passage 23. One end of the plunger pump piston 21 is arranged on the plunger pump chamber 22, and the other end is connected to the driving rod of the control motor 20. The oil outlet of the plunger pump chamber 22 is communicated with the oil inlet of the third oil passage 28, and the oil outlet of the third oil passage 28 is communicated with the wheel cylinder assembly.
[0064] The working principle is as follows: When it is necessary to replenish the brake fluid, the control motor 20 is turned on, and drives the plunger pump piston 21 to move, so that the space inside the plunger pump chamber 22 increases, and then the pressure inside the plunger pump 22 decreases, so that the pressure difference between the liquid inlet and liquid outlet of the one-way valve increases, and then the brake fluid can enter the inside of the plunger pump chamber 22 from the oil pot 25.
[0065] Through the above technical solution, by setting the plunger pump chamber 22 and the plunger pump piston 21, when it is necessary to replenish the brake fluid to the braking system, the plunger pump piston 21 moves, so that the space inside its plunger pump chamber 22 increases, and then a pressure difference is formed between the oil inlet and oil outlet of the oil passage block, guiding the brake fluid in the oil pot to flow out and enter the braking system.
[0066] Preferably, the wheel cylinder assembly includes a control valve 29 and a wheel cylinder 30. The control valve 29 is arranged on the third oil passage, and the oil inlet of the wheel cylinder 30 is communicated with the oil outlet of the third oil passage 28.
[0067] The working principle is as follows: The brake fluid reduces the pressure inside the plunger pump chamber 22 through the control motor, and by opening the control valve 29, the brake fluid is introduced into the wheel cylinder 30, so that the brake fluid inside the device can enter the wheel cylinder 30 to achieve the braking effect.
[0068] In the above technical solution, after the brake fluid flows out, the opening of the control valve 29 can be controlled to enable the brake fluid to enter the wheel cylinder 30 to achieve the braking effect.
[0069] The third object of the present utility model is to provide a braking system provided with a wire-controlled brake fluid replenishment circuit.
[0070] To achieve the above object, the technical solution of the present utility model is as follows: A braking system includes a wire-controlled brake fluid replenishment circuit
[0071] In the above technical solution, the fluid replenishment return flow is arranged in the braking system and communicated with the brake in the braking system, so that the braking system can respond more quickly and perform the braking work.
[0072] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0073] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0074] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0075] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.
[0076] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0077] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. An integrated liquid replenishment one-way valve for wire-controlled actuation, characterized in that: The invention comprises a valve body (4), a valve seat (1) and a valve core (2); the valve body (4) is provided with a cavity extending in the up-down direction inside the valve body; the valve seat (1) is fixedly mounted on the upper end of the valve body (4); the valve seat (1) is provided with a liquid inlet channel penetrating the valve body (1) and communicating with the cavity; the valve core (2) is slidably mounted in the cavity in the up-down direction; the valve body (4) is provided with a placement cavity communicating with the cavity below the cavity; a liquid leakage port is provided at the lower end of the placement cavity; and a liquid leakage port is provided in the placement cavity. The valve body (4) is provided with an elastic member (3), which is connected between the lower end of the valve body (4) and the valve core (2); the inner side wall of the valve body (4) corresponding to the lower end of the cavity is provided with a conical limit surface (18); the lower end of the valve core (2) is provided with a contact surface (17) that matches the shape of the sealing surface; the side wall of the valve body (4) is provided with a plurality of liquid outlet holes (15) connected to the cavity; and the outer surface of the valve core (2) is provided with a plurality of flow passages (19) extending up and down at intervals along its circumferential direction.
2. The integrated liquid replenishment one-way valve for wire-controlled actuation according to claim 1, characterized in that: The flow passage (19) is a strip-shaped groove.
3. The integrated liquid replenishment one-way valve for wire-controlled actuation according to claim 1, characterized in that: The elastic member (3) is a columnar spring, and the upper and lower ends of the elastic member (3) are respectively connected and fixed to the valve core (2) and the valve body (4).
4. The integrated liquid replenishment one-way valve for wire-controlled actuation according to claim 1, characterized in that: The lower end of the liquid inlet channel is provided with a conical sealing surface (8), and the outer edge of the upper end of the valve core (2) is provided with a conical fitting surface (7) that matches the sealing surface (8).
5. The integrated liquid replenishment one-way valve for wire-controlled actuation according to claim 1, characterized in that: The diameter of the cavity is larger than the diameter of the placement cavity, the lower end of the cavity is transitionally connected to the placement cavity via the conical limiting surface (18), and the lower end of the valve core (2) is provided with the conical contact surface (17).
6. A brake-by-wire fluid replenishment circuit, characterized in that: It includes a fluid replenishment oil circuit, a plunger pump oil circuit and a wheel cylinder assembly. The fluid replenishment oil circuit is provided with an integrated fluid replenishment one-way valve for wire control as described in any one of claims 1 to 5. The plunger pump oil circuit is connected to the fluid replenishment oil circuit and the wheel cylinder assembly.
7. The brake-by-wire fluid replenishment circuit according to claim 6, characterized in that: The refill oil circuit comprises an oil circuit block (11), an oil pot (25), a first oil circuit (24) and a second oil circuit (23); the integrated refill one-way valve for wire control is arranged in the oil circuit of the oil circuit block (11); the oil outlet of the oil pot (25) is connected to the oil inlet of the first oil circuit (24); the oil outlet of the first oil circuit (24) is connected to the oil circuit port of the oil circuit block (11); the oil circuit outlet of the oil circuit block (11) is connected to the oil inlet of the second oil circuit (23); and the oil outlet of the second oil circuit (23) is connected to the plunger pump oil circuit.
8. The brake-by-wire fluid replenishment circuit according to claim 7, characterized in that: The plunger pump oil circuit comprises a plunger pump chamber (22), a plunger pump piston (21), a control motor (20) and a third oil circuit (28); the oil inlet of the plunger pump chamber (22) is connected to the oil outlet of the second oil circuit (23); the piston end of the plunger pump piston (21) is arranged in the plunger pump chamber (22), and the other end is connected to the driving rod of the control motor (20); the oil outlet of the plunger pump chamber (22) is connected to the oil inlet of the third oil circuit (28), and the oil outlet of the third oil circuit (28) is connected to the wheel cylinder assembly.
9. The brake-by-wire fluid replenishment circuit according to claim 8, characterized in that: The wheel cylinder assembly comprises a control valve (29) and a wheel cylinder (30), wherein the control valve (29) is arranged in the third oil circuit, and the oil inlet of the wheel cylinder (30) is connected to the oil outlet of the third oil circuit (28).
10. A braking system, characterized in that: It comprises a brake-by-wire fluid replenishment circuit as described in any one of claims 6-9.