CN115560103A

CN115560103A - Proportional electromagnetic valve for vehicle

Info

Publication number: CN115560103A
Application number: CN202211406028.6A
Authority: CN
Inventors: 宁世海; 高功申; 张迪; 张京华; 苗全; 崔立丰
Original assignee: Beijing Shaoshi Technology Co ltd
Current assignee: Beijing Shaoshi Technology Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-01-03

Abstract

The invention provides a proportional solenoid valve for a vehicle, which relates to the technical field of solenoid valves and comprises a valve body assembly, wherein the middle part of the inner wall of the valve body assembly is movably connected with an armature, electromagnetic coils are arranged on the surface of one end of the valve body assembly at equal intervals, one end of the valve body assembly is fixedly connected with a gearbox connector, the middle part of the inner wall of the valve body assembly is movably connected with a valve rod, one end of the electromagnetic coil, which is close to a power connector, is provided with a shaft hole, a pole shoe is movably connected in the shaft hole of one end of the electromagnetic coil, which is far away from the gearbox connector, the outer side of the electromagnetic coil is fixedly connected with a shell, and one end of the shell, which is far away from the valve body assembly, is movably connected with the shell.

Description

Proportional electromagnetic valve for vehicle

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to a proportional electromagnetic valve for a vehicle.

Background

The existing normally-low and normally-high proportional electromagnetic overflow valves of automobile gearboxes realize pressure control by changing electromagnet current (PWM duty ratio), are mainly applied to hydraulic systems of AT, CVT and DCT, and mainly structurally comprise a valve body, a sealing steel ball, a valve rod, an electromagnet and other components.

The defects of the prior art are as follows:

one is as follows: the existing proportional solenoid valve is characterized in that a sealing steel ball needs to move up and down flexibly in the valve body when the proportional solenoid valve works, the existing solenoid valve body and an internal structure are formed by integral injection molding, the internal structure and the sealing steel ball need to be injected together, and then the integral structure is injected secondarily.

The second step is as follows: the existing proportional solenoid valve has the advantages that when the proportional solenoid valve is in a power-on working state, a sealing steel ball and an overflow orifice below need to be sealed by oil, so that the requirement on the roundness of the overflow orifice of a valve body is high, when the internal structure of the valve body is subjected to injection molding, the conditions of poor orifice roundness, orifice burrs and flash caused by injection molding of the overflow orifice are easy to occur, the sealing quality of the sealing steel ball and the overflow orifice is influenced when the working state is influenced, the leakage problem is caused, the oil sealing structure in the valve body is made of plastic materials, and the temperature of the oil is high in the using process, so that the temperature has great influence on the thermal expansion and cold contraction of plastics, and the sealing reliability and the service life of the valve body are influenced.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a proportional solenoid valve for a vehicle, which solves the above-mentioned problems in the background art.

In order to solve the technical problem, the invention provides a proportional solenoid valve for a vehicle, which comprises a valve body assembly, wherein the middle part of the inner wall of the valve body assembly is movably connected with an armature, electromagnetic coils are arranged on the surface of one end of the valve body assembly at equal intervals, one end of the valve body assembly is fixedly connected with a gearbox connector, the middle part of the inner wall of the valve body assembly is movably connected with a valve rod, one end of the electromagnetic coil, which is close to a power supply connector, is provided with a shaft hole, a pole shoe is movably connected in the shaft hole of one end of the electromagnetic coil, which is far away from the gearbox connector, the outer side of the electromagnetic coil is fixedly connected with a shell, one end of the shell, which is far away from the valve body assembly, is movably connected with a shell, the middle part of the inner wall of the pole shoe is movably connected with an adjusting spring, and the inner wall of the adjusting spring is movably connected with an adjusting screw.

Preferably, a circular hole is formed in the middle of one end, close to the gearbox connector, of the valve body assembly, a valve ball is movably connected into the circular hole in the middle of one end, close to the gearbox connector, of the valve body assembly, a flat valve is connected to the middle of the inner wall of the valve body assembly in a pressing and riveting mode, and the numerical value of the end face of the flat valve and the bottom end of the mounting hole of the valve ball is 6.2 mm.

Preferably, the one end that the valve body assembly is close to the valve ball has been seted up T type groove, the T type inslot fixedly connected with valve body upper cover that the valve body assembly is close to valve ball one end, the gearbox is kept away from in the valve rod outside and is connected one end swing joint and have the valve barrel, the valve barrel forms for the copper product casting, the one end swing joint that the wafer valve was kept away from to the valve barrel has the bush, the side swing joint of bush one end and wafer valve is kept away from to the valve barrel, the pore wall swing joint of valve body assembly hole has the valve ball.

Preferably, a push rod is arranged in the middle of the inner wall of the armature, a limit groove is formed in the middle of the side face of the push rod, and the inner wall of the limit groove in the middle of the side face of the push rod is fixedly connected with the inner wall of the armature.

Preferably, the electromagnetic coil comprises an enameled wire, the inner wall of the enameled wire is fixedly connected with a wire shaft, the inner wall of the wire shaft is fixedly connected with a copper sleeve, and one end of the copper sleeve is fixedly connected with a first wiring terminal.

Preferably, the power connector is formed by injection molding through a mold, a clamping groove is formed in one end of the power connector, a second wiring terminal is fixedly connected in the clamping groove in one end of the power connector, a buckle is fixedly connected to one end, close to the electromagnetic coil, of the power connector, and the power connector is fixedly connected with the electromagnetic coil through the fixed buckle.

Compared with the prior art, the invention provides a proportional electromagnetic valve for a vehicle, which has the following beneficial effects:

1. compared with the prior art, the invention can directly and effectively provide the control and detection of the dimensional precision, and is beneficial to improving the economy, reliability and testability of the process.

2. Compared with the structure which needs secondary injection molding in the prior art, the valve ball mounting structure at the upper end of the valve body can simplify the processing and assembling operation process and is beneficial to saving the process of processing and assembling.

3. According to the invention, the flat valve is arranged, when the device is used, the flat valve is assembled and connected with the valve body through riveting, and direct real-time detection of the axial dimension of the flat valve relative to the valve ball sealing bottom surface can be realized after assembly.

4. This technical valve body is formed by steel part machining, and valve ball sealing part compares in prior art, can effectively prevent the leakage of fluid, maintains stable hydraulic pressure, when being favorable to improving product work, because the valve ball is the impact strength when axial switching motion with the sealing opening, is favorable to improving product life.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 3 is a partial schematic of the present invention;

FIG. 4 is a schematic view of the armature construction of the present invention;

FIG. 5 is a schematic view of the bobbin configuration of the present invention;

fig. 6 is a schematic structural diagram of the power connector of the present invention.

In the figure: 1. a valve body assembly; 2. an armature; 3. an electromagnetic coil; 4. a power supply connector; 5. a pole shoe; 6. a gearbox coupling; 7. a valve stem; 8. adjusting the spring; 9. an adjusting screw; 10. a housing; 11. a valve body upper cover; 12. a valve ball; 13. a bushing; 14. a flat valve; 15. a valve housing; 16. a push rod; 17. enamelled wires; 18. a bobbin; 19. a copper bush 19; 20. a first connection terminal; 21. and a second connection terminal.

Detailed Description

The present invention will be described more fully with reference to the accompanying drawings, and the embodiments of the present invention are merely examples, and the vehicle proportional solenoid valve according to the present invention is not limited to the embodiments described in the following embodiments, and all other embodiments obtained by those skilled in the art without any creative work fall within the scope of the present invention.

The invention provides a proportional solenoid valve for a vehicle, which comprises a valve body assembly 1, wherein the middle part of the inner wall of the valve body assembly 1 is movably connected with an armature 2, electromagnetic coils 3 are arranged on the surface of one end of the valve body assembly 1 at equal intervals, one end of the valve body assembly 1 is fixedly connected with a gearbox connector 6, the middle part of the inner wall of the valve body assembly 1 is movably connected with a valve rod 7, one end of the electromagnetic coil 3 close to a power supply connector 4 is provided with a shaft hole, a pole shoe 5 is movably connected in the shaft hole of one end of the electromagnetic coil 3 far away from the gearbox connector 6, the outer side of the electromagnetic coil 3 is fixedly connected with a shell 10, one end of the shell 10 far away from the valve body assembly 1 is movably connected with the shell 10, the middle part of the inner wall of the pole shoe 5 is movably connected with an adjusting spring 8, the inner wall of the adjusting spring 8 is movably connected with an adjusting screw 9, when the adjusting spring is used, the gearbox connector 6 and the valve body assembly 1 are connected into a whole through injection molding, the electromagnetic coil 3 and the valve body assembly 1 are connected into a whole through shaft hole matching, the armature 2 is arranged in a copper sleeve 19 in an inner hole of the valve body assembly 1, the pole shoe 5 and one end, provided with a terminal, of the electromagnetic coil 3 are connected through shaft hole matching, the armature 2 is arranged in the copper sleeve 19 of the pole shoe 5, the armature 2 can move axially flexibly, the assembled electromagnetic coil 3 is arranged in the shell 10, the inner electromagnetic coil 3 is fixed through closing-up and pressing of the shell 10, the power connector 4 is connected with a buckle hole at the bottom of the shell 10 through a buckle, the adjusting spring 8 is arranged in the hole of the pole shoe 5, and the adjusting screw 9 is screwed in.

Further, a circular hole is formed in the middle of one end, close to the gearbox connector 6, of the valve body assembly 1, a valve ball 12 is movably connected in the circular hole in the middle of one end, close to the gearbox connector 6, of the valve body assembly 1, a flat valve 14 is connected to the middle of the inner wall of the valve body assembly 1 in a press riveting mode, the numerical value of the end face of the flat valve 14 and the bottom end of an installation hole of the valve ball 12 is 6.2 mm, when the valve ball 12 placing hole is formed in the upper end of the valve body assembly 1 when the valve body assembly is used, the valve ball 12 can be placed into the circular hole through mechanical assembly, the assembly process is simple, secondary injection molding is avoided, meanwhile, measurement of the stroke of the valve ball 12 can be achieved, the valve ball 12 is placed in the circular hole of the valve body assembly 1, line contact sealing of the valve ball 12 and the bottom end face hole of the circular hole is achieved through pressure of a hydraulic system, the advantages of rigid line contact sealing are achieved, and the sealing effect is good; meanwhile, the service life of the steel ball can be prolonged compared with the service life of the injection molding part which is abraded with the steel ball in an opening and closing mode for a long time.

Further, one end of the valve body assembly 1, which is close to the valve ball 12, is provided with a T-shaped groove, the end of the valve body assembly 1, which is close to one end of the valve ball 12, is fixedly connected with a valve body upper cover 11, one end of the valve rod 7, which is far away from the gearbox connector 6, is movably connected with a valve sleeve 15, the valve sleeve 15 is formed by casting a copper material, one end of the valve sleeve 15, which is far away from the flat valve 14, is movably connected with a lining 13, one end of the valve sleeve 15, which is far away from the lining 13, is movably connected with the side face of the flat valve 14, the hole wall of the inner hole of the valve body assembly 1 is movably connected with the valve ball 12, and when the valve sleeve is used, the valve sleeve 15 is formed by casting the copper material, so that the valve rod 7 can be prevented from being magnetized in the power-on work of the electromagnet, the lining 13 is assembled with the inner hole of the valve body assembly 1 through interference fit, and the function of the push rod 16 as axial motion guide.

Further, a push rod 16 is arranged in the middle of the inner wall of the armature 2, a limit groove is formed in the middle of the side face of the push rod 16, the inner wall of the limit groove in the middle of the side face of the push rod 16 is fixedly connected with the inner wall of the armature 2, in use, the outer circle of the push rod 16 is connected with the inner hole of the armature 2 in an interference fit mode, a limit clamping groove is formed in the outer circle face of the push rod 16, the armature 2 after assembly connection is subjected to plastic deformation formed after the inner hole is riveted with the outer edge of the inner hole in a pressing mode, the part of deformed residual materials are accumulated in the clamping groove of the outer circle of the push rod 16 to form axial fixed positioning, the assembly structure has the advantages that the armature 2 is prevented from being subjected to impact force generated with the valve rod 7 for a long time under the action of electromagnetic force, axial displacement of the push rod 16 is generated, and the stable working stroke effect of the electromagnet is achieved.

Further, the electromagnetic coil 3 comprises an enameled wire 17, the inner wall of the enameled wire 17 is fixedly connected with a bobbin 18, the inner wall of the bobbin 18 is fixedly connected with a copper sleeve 19, and one end of the copper sleeve 19 is fixedly connected with a first wiring terminal 20.

Furthermore, power connector 4 is by mould injection molding machine-shaping, the draw-in groove has been seted up to power connector 4's one end, fixedly connected with second binding post 21 in the draw-in groove of power connector 4 one end, power connector 4's one end fixedly connected with buckle that is close to solenoid 3, power connector 4 is through fixed buckle and solenoid 3 fixed connection, during the use, because second binding post 21 is equipped with and is connected fast interface with the hydraulic system power, can realize being connected with the quick plug of hydraulic system power, make things convenient for the dismouting.

The working principle and the using process of the invention are as follows:

in the initial state, the valve ball 12 is opened, the flat valve 14 is closed, the P to A channel is opened, the T to A and P to T channels are closed, when the electromagnetic coil 3 is electrified, the opening degree of the valve ball 12 and the flat valve 14 is controlled through the duty ratio, the valve ball stops at the middle position, when the electromagnetic coil is at the middle position, the P to A and the P to T are conducted, and the pressure of the port A is controlled through controlling the duty ratio. When the solenoid 3 duty cycle is increased to a maximum, the valve ball 12 is closed, the flat valve 14 is opened, and the port a pressure is zero.

In a high-pressure state, the electromagnetic valve is powered off or has low current, the armature 2 and the valve rod 7 are pushed under the action of the adjusting spring 8 to enable the position of the steel ball to move to the right, the valve plate is closed, the oil supply port is opened, the oil drain port is closed, high-pressure oil of the electromagnetic valve enters the gear shifting valve, the oil supply oil way of the clutch is connected, and the clutch works.

The pressure state is controlled, the electromagnetic valve is electrified with medium current, the steel ball is partially sealed, the valve plate is partially opened, the oil supply port is electrified with low-pressure oil to the electromagnetic regulating valve, and the clutch is in half linkage.

In a low-pressure state, when the electromagnetic valve is electrified, the electromagnet generates a leftward acting force to force the armature 2 to move rightward, the steel ball moves leftward under the action of hydraulic pressure, the oil supply port is closed, the oil drainage port is opened, pressure oil of the gear shift valve is decompressed through the pressure relief oil way, and the clutch is separated.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiment of the invention, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and the same embodiment and different embodiments of the invention can be combined mutually under the condition of no conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a proportional solenoid valve for vehicle, includes valve body assembly (1), its characterized in that: the utility model discloses a valve body assembly, including valve body assembly (1), the middle part swing joint of valve body assembly (1) inner wall has armature (2), the surperficial equidistance of valve body assembly (1) one end is arranged and is had solenoid (3), the one end fixedly connected with gearbox of valve body assembly (1) connects (6), the middle part swing joint of valve body assembly (1) inner wall has valve rod (7), solenoid (3) are close to the one end of power connector (4) and have been seted up the shaft hole, swing joint has pole shoe (5) in the shaft hole of gearbox joint (6) one end is kept away from in solenoid (3), outside fixedly connected with shell (10) of solenoid (3), the one end swing joint that valve body assembly (1) was kept away from in shell (10) has shell (10), the middle part swing joint of pole shoe (5) inner wall has adjusting spring (8), adjusting spring (8) inner wall swing joint has adjusting screw (9).

2. The proportional solenoid valve for a vehicle according to claim 1, wherein: the round hole has been seted up near the middle part that gearbox connects (6) one end in valve body assembly (1), the round hole internal swing joint that gearbox connects (6) one end middle part is close to in valve body assembly (1) has valve ball (12), the middle part of valve body assembly (1) inner wall is pressed and is riveted and is connected with wafer valve (14), the terminal surface of wafer valve (14) is 6.2 mm with the mounting hole bottom numerical value of valve ball (12).

3. The proportional solenoid valve for a vehicle according to claim 2, wherein: valve body assembly (1) is close to the one end of valve ball (12) and has been seted up T type groove, valve body assembly (1) is close to T type inslot fixedly connected with valve body upper cover (11) of valve ball (12) one end, the gearbox is kept away from in valve rod (7) outside and is connected (6) one end swing joint has valve barrel (15), valve barrel (15) are formed for the casting of copper product, the one end swing joint that wafer valve (14) were kept away from in valve barrel (15) has bush (13), the one end that bush (13) were kept away from in valve barrel (15) and the side swing joint of wafer valve (14), the pore wall swing joint of valve body assembly (1) hole has valve ball (12).

4. The proportional solenoid valve for a vehicle according to claim 1, wherein: the middle part of the inner wall of the armature (2) is provided with a push rod (16), the middle part of the side surface of the push rod (16) is provided with a limit groove, and the inner wall of the limit groove in the middle part of the side surface of the push rod (16) is fixedly connected with the inner wall of the armature (2).

5. The proportional solenoid valve for a vehicle according to claim 1, wherein: solenoid (3) include enameled wire (17), the inner wall fixedly connected with spool (18) of enameled wire (17), the inner wall fixedly connected with copper sheathing 19 (19) of spool (18), the one end fixedly connected with first binding post (20) of copper sheathing 19 (19).

6. The proportional solenoid valve for a vehicle according to claim 1, wherein: the power supply connector (4) is formed by injection molding through a mold, a clamping groove is formed in one end of the power supply connector (4), a second wiring terminal (21) is fixedly connected into the clamping groove in one end of the power supply connector (4), a buckle is fixedly connected to one end, close to the electromagnetic coil (3), of the power supply connector (4), and the power supply connector (4) is fixedly connected with the electromagnetic coil (3) through the fixed buckle.