CN216240995U - Permanent magnet neodymium iron boron rotor EGR valve for automobile - Google Patents
Permanent magnet neodymium iron boron rotor EGR valve for automobile Download PDFInfo
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- CN216240995U CN216240995U CN202123078326.0U CN202123078326U CN216240995U CN 216240995 U CN216240995 U CN 216240995U CN 202123078326 U CN202123078326 U CN 202123078326U CN 216240995 U CN216240995 U CN 216240995U
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Abstract
The utility model discloses an EGR (exhaust gas recirculation) valve of a permanent magnet neodymium iron boron rotor for an automobile, which comprises a valve body assembly, wherein a valve seat is arranged at the central position of the bottom of the valve body assembly, a sealing valve cover is arranged inside the valve seat, an air inlet is arranged inside the valve body assembly above the valve seat, an oilless bearing is arranged inside the valve body assembly above the air inlet, an oil seal is arranged at the top end of the oilless bearing, a hollow nut is connected with the inner wall of the valve body assembly above the oil seal in a threaded manner, a motor shell is arranged at the top end of the valve body assembly, a motor stator is arranged at the central position inside the motor shell, a brushless rotor is arranged inside the motor shell inside the motor stator, and a screw rod is connected with the inner thread of the brushless rotor. The utility model not only can make the valve seat in a normally closed state, but also avoids the phenomenon of generating a gap between the screw rod and the valve rod, can accurately monitor the opening and closing degree of the valve seat, has high precision and quick response, and can effectively reduce the emission of harmful gas.
Description
Technical Field
The utility model relates to the technical field of EGR valves, in particular to an EGR valve with a permanent magnet neodymium iron boron rotor for an automobile.
Background
With the development of society, the traffic industry has been developed vigorously, and an automobile, as a common vehicle, has been gradually introduced into the lives of people, but the automobile generates a large amount of exhaust gas during operation, so that the exhaust gas is discharged to the interior of an engine for secondary utilization as required to reduce the emission of carbon dioxide, and a corresponding EGR valve is required to be used for controlling the exhaust gas.
The EGR valve on the market nowadays is inconvenient for resetting the sealing valve disc, so that the valve seat is difficult to normally close, and people are troubled frequently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an EGR valve of a permanent magnet neodymium iron boron rotor for an automobile, which aims to solve the problem that the EGR valve is inconvenient to reset a sealing valve disc in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the EGR valve comprises a valve body assembly, wherein a valve seat is arranged at the central position of the bottom of the valve body assembly, a sealing valve cover is arranged inside the valve seat, an air inlet is arranged inside the valve body assembly above the valve seat, an oilless bearing is arranged inside the valve body assembly above the air inlet, an oil seal is arranged at the top end of the oilless bearing, a hollow nut is connected to the inner wall of the valve body assembly above the oil seal in a threaded manner, a motor shell is arranged at the top end of the valve body assembly, a motor stator is arranged at the central position inside the motor shell, a brushless rotor is arranged inside the motor shell inside the motor stator, a screw rod is connected to the inner thread of the brushless rotor, the bottom end of the screw rod extends to the inside of the valve body assembly and is provided with a valve rod, the bottom end of the valve rod is fixedly connected with the top of the sealing valve cover, and an intermediate flange is arranged on the inner wall of the valve body assembly outside the screw rod, the brushless motor comprises a brushless rotor and is characterized in that a lower bearing is arranged inside a motor shell below the brushless rotor, an upper bearing is arranged inside the motor shell above the brushless rotor, a sensor end cover is arranged at the top end of the motor shell, and a position sensor fixed end is arranged on one side inside the sensor end cover.
Preferably, a first spring is installed at the top of a sensor end cover on one side of the fixed end of the position sensor, a movable core is installed at the bottom end of the first spring, and the bottom end of the movable core is abutted to the top end of the screw rod, so that the opening degree of the valve seat can be accurately monitored.
Preferably, a collecting ring is arranged inside the motor shell above the upper bearing, and carbon brushes coated with silver are arranged on two sides of the top end of the collecting ring, so that the brushless rotor can rotate between the upper bearing and the lower bearing.
Preferably, a second retaining disc is arranged on the outer wall of one end of the valve rod, a third spring is installed at the edge position of the bottom end of the second retaining disc, and the bottom end of the third spring is connected with the bottom of the valve body assembly, so that the valve seat is in a normally closed state.
Preferably, be equipped with first keeping dish on the screw rod outer wall of second keeping dish top, the flange top in the screw rod outside is equipped with V type annular, the second spring is installed to the bottom of V type annular, the bottom of second spring is connected with the top of first keeping dish to avoid the phenomenon emergence in production clearance between screw rod and the valve rod.
Preferably, the top that the carbon brush was applied silver all is equipped with conductive contact, binding post is installed through the circuit board to one side on conductive contact top to apply silver with electric energy transmission to the carbon brush through conductive contact.
Compared with the prior art, the utility model has the beneficial effects that: the permanent magnet neodymium iron boron rotor EGR valve for the automobile not only can enable the valve seat to be in a normally closed state, but also avoids the phenomenon that a gap is generated between the screw rod and the valve rod, can accurately monitor the opening and closing degree of the valve seat, has high precision and quick response, and can effectively reduce the emission of harmful gas;
(1) the third spring has good elastic action and drives the valve rod to reset upwards through the second retaining disc, so that the valve rod drives the sealing valve cover to reset to the inside of the valve seat, and the valve seat can be in a normally closed state;
(2) the second spring has good elastic action, so that the second spring drives the lower end of the screw rod to abut against the top of the valve rod through the first retaining disc, and a gap between the screw rod and the valve rod is avoided;
(3) have good elastic action through first spring, make it exert decurrent power to the activity core, when the screw rod moves down, because of the lower extreme of activity core butt in the top of screw rod all the time to the degree of opening and shutting of disk seat can accurately be monitored.
Drawings
Fig. 1 is a schematic front sectional view of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.
Fig. 3 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention.
Fig. 4 is an enlarged schematic view of the structure at C in fig. 1 according to the present invention.
In the figure: 1. a valve body assembly; 2. oil sealing; 3. a hollow nut; 4. a screw; 5. a motor stator; 6. a brushless rotor; 7. a movable core; 8. fixing the end of the position sensor; 9. a sensor end cap; 10. an upper bearing; 11. a motor housing; 12. a lower bearing; 13. a middle flange; 14. a V-shaped ring groove; 15. an oilless bearing; 16. an air inlet; 17. a valve seat; 18. sealing the valve cover; 19. a valve stem; 20. a third spring; 21. a first holding tray; 22. a second spring; 23. a second holding tray; 24. a wiring terminal; 25. a conductive contact; 26. coating silver on the carbon brush; 27. a collector ring; 28. a first spring.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown: the permanent magnet neodymium iron boron rotor EGR valve for the automobile comprises a valve body assembly 1, wherein a valve seat 17 is arranged at the central position of the bottom of the valve body assembly 1, a sealing valve cover 18 is arranged inside the valve seat 17, an air inlet 16 is arranged inside the valve body assembly 1 above the valve seat 17, an oilless bearing 15 is arranged inside the valve body assembly 1 above the air inlet 16, an oil seal 2 is arranged at the top end of the oilless bearing 15, and a hollow nut 3 is connected to the inner wall of the valve body assembly 1 above the oil seal 2 in a threaded mode;
the top end of the valve body assembly 1 is provided with a motor shell 11, a motor stator 5 is arranged at the central position inside the motor shell 11, a brushless rotor 6 is arranged inside the motor shell 11 at the inner side of the motor stator 5, the inner thread of the brushless rotor 6 is connected with a screw rod 4, the bottom end of the screw rod 4 extends to the inside of the valve body assembly 1 and is provided with a valve rod 19, and the bottom end of the valve rod 19 is fixedly connected with the top of a sealing valve cover 18;
a second holding disc 23 is arranged on the outer wall of one end of the valve rod 19, a third spring 20 is arranged at the edge position of the bottom end of the second holding disc 23, and the bottom end of the third spring 20 is connected with the bottom of the valve body assembly 1;
when the valve seat is used, the third spring 20 has a good elastic effect, and drives the valve rod 19 to reset upwards through the second retaining disc 23, so that the valve rod 19 drives the sealing valve cover 18 to reset to the inside of the valve seat 17, and the valve seat 17 can be in a normally closed state;
a first holding disc 21 is arranged on the outer wall of the screw rod 4 above the second holding disc 23, a V-shaped ring groove 14 is arranged at the top of the middle flange 13 outside the screw rod 4, a second spring 22 is arranged at the bottom end of the V-shaped ring groove 14, and the bottom end of the second spring 22 is connected with the top end of the first holding disc 21;
when the valve is used, the second spring 22 has good elastic action, so that the second spring drives the lower end of the screw rod 4 to abut against the top of the valve rod 19 through the first retaining disc 21, and the phenomenon that a gap is generated between the screw rod 4 and the valve rod 19 is avoided;
a middle flange 13 is arranged on the inner wall of the valve body assembly 1 at the outer side of the screw 4, a lower bearing 12 is arranged inside a motor shell 11 below the brushless rotor 6, an upper bearing 10 is arranged inside the motor shell 11 above the brushless rotor 6, a collecting ring 27 is arranged inside the motor shell 11 above the upper bearing 10, and two sides of the top end of the collecting ring 27 are provided with carbon brushes for silver coating 26;
when in use, the electric energy is transmitted to the brushless rotor 6 through the collector ring 27 by the carbon brush silver coating 26, so that magnetism is generated between the brushless rotor 6 and the motor stator 5, and the brushless rotor 6 is positioned between the upper bearing 10 and the lower bearing 12 to rotate;
the top ends of the carbon brush silver coatings 26 are provided with conductive contacts 25, and one side of the top ends of the conductive contacts 25 is provided with a wiring terminal 24 through a circuit board;
when in use, the external electric energy is connected through the wiring terminal 24 so as to transmit the electric energy to the carbon brush silver coating 26 through the conductive contact piece 25;
a sensor end cover 9 is arranged at the top end of the motor shell 11, a position sensor fixed end 8 is arranged on one side inside the sensor end cover 9, a first spring 28 is arranged at the top of the sensor end cover 9 on one side of the position sensor fixed end 8, a movable core 7 is arranged at the bottom end of the first spring 28, and the bottom end of the movable core 7 is abutted to the top end of the screw rod 4;
when the valve seat 17 is used, the first spring 28 has a good elastic effect, so that the first spring exerts a downward force on the movable core 7, and when the screw rod 4 moves downwards, the lower end of the movable core 7 is always abutted to the top of the screw rod 4, so that the opening degree of the valve seat 17 can be accurately monitored.
In the embodiment of the application, when the EGR valve is used, firstly, the external electric energy is connected through the wiring terminal 24, so that the electric energy is sequentially transmitted to the brushless rotor 6 through the collecting ring 27 by the circuit board, the conductive contact piece 25 and the carbon brush coated with silver 26, at this time, magnetism is generated between the brushless rotor 6 and the motor stator 5, so that the brushless rotor 6 is positioned between the upper bearing 10 and the lower bearing 12 to rotate, the upper end of the screw rod 4 is a threaded section, so that the screw rod 4 moves down uniformly, and the screw rod drives the sealing valve cover 18 to move down synchronously through the valve rod 19, so that the valve seat 17 is in an open-close state, one end of the sensor end cover 9 is connected to the ECU end of the automobile engine, so that the EGR valve can be controlled, then, the first spring 28 has good elastic action, so that the screw rod applies a downward force to the movable core 7, when the screw rod 4 moves down, because the lower end of the movable core 7 is always abutted to the top of the screw rod 4, can accurate monitoring disk seat 17's degree of opening and shutting, have good elastic action through second spring 22 at last, make its lower extreme butt that drives screw rod 4 through first keeping dish 21 in valve rod 19's top, take place with the phenomenon of avoiding producing the clearance between screw rod 4 and the valve rod 19, rethread third spring 20 has good elastic action, make it keep dish 23 through the second and drive valve rod 19 upwards to reset, so that valve rod 19 drives the inside that sealed valve gap 18 resets to disk seat 17, and then can make valve seat 17 be the normally closed state, thereby accomplish EGR valve's use.
Claims (6)
1. Permanent magnet neodymium iron boron rotor EGR valve for car, its characterized in that, including valve body assembly (1), the central point of valve body assembly (1) bottom puts the department and is equipped with disk seat (17), the internally mounted of disk seat (17) has sealed valve gap (18), the inside air inlet (16) that is equipped with of valve body assembly (1) of disk seat (17) top, the inside oilless bearing (15) that is equipped with of valve body assembly (1) of air inlet (16) top, the top of oilless bearing (15) is equipped with oil blanket (2), threaded connection has hollow nut (3) on the valve body assembly (1) inner wall of oil blanket (2) top, the top of valve body assembly (1) is equipped with motor casing (11), the inside central point of motor casing (11) puts the department and is equipped with motor stator (5), motor casing (11) the inboard of motor stator (5) is inside to be equipped with brushless rotor (6), the inside threaded connection of brushless rotor (6) has screw rod (4), the bottom of screw rod (4) extends to the inside of valve body assembly (1) and is equipped with valve rod (19), the bottom of valve rod (19) and the top fixed connection of sealed valve gap (18), be equipped with flange (13) on valve body assembly (1) inner wall in the screw rod (4) outside, motor casing (11) internally mounted of brushless rotor (6) below has lower bearing (12), motor casing (11) internally mounted of brushless rotor (6) top has upper bearing (10), the top of motor casing (11) is equipped with sensor end cover (9), the inside one side of sensor end cover (9) is equipped with position sensor stationary end (8).
2. The permanent magnet neodymium iron boron rotor EGR valve for the automobile of claim 1, characterized in that: the sensor is characterized in that a first spring (28) is installed at the top of a sensor end cover (9) on one side of a fixed end (8) of the position sensor, a movable core (7) is installed at the bottom end of the first spring (28), and the bottom end of the movable core (7) is abutted to the top end of a screw (4).
3. The permanent magnet neodymium iron boron rotor EGR valve for the automobile of claim 1, characterized in that: the motor shell (11) above the upper bearing (10) is internally provided with a collecting ring (27), and the two sides of the top end of the collecting ring (27) are provided with carbon brushes coated with silver (26).
4. The permanent magnet neodymium iron boron rotor EGR valve for the automobile of claim 1, characterized in that: a second retaining disc (23) is arranged on the outer wall of one end of the valve rod (19), a third spring (20) is installed at the edge position of the bottom end of the second retaining disc (23), and the bottom end of the third spring (20) is connected with the bottom of the valve body assembly (1).
5. The permanent magnet neodymium iron boron rotor EGR valve for the automobile of claim 4, characterized in that: be equipped with first keeping dish (21) on screw rod (4) outer wall of second keeping dish (23) top, middle flange (13) top in the screw rod (4) outside is equipped with V type annular (14), second spring (22) are installed to the bottom of V type annular (14), the bottom of second spring (22) is connected with the top of first keeping dish (21).
6. The permanent magnet neodymium iron boron rotor EGR valve for the automobile of claim 3, characterized in that: the top end of the carbon brush silver coating (26) is provided with a conductive contact piece (25), and one side of the top end of the conductive contact piece (25) is provided with a wiring terminal (24) through a circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123078326.0U CN216240995U (en) | 2021-12-08 | 2021-12-08 | Permanent magnet neodymium iron boron rotor EGR valve for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123078326.0U CN216240995U (en) | 2021-12-08 | 2021-12-08 | Permanent magnet neodymium iron boron rotor EGR valve for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216240995U true CN216240995U (en) | 2022-04-08 |
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ID=80962136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123078326.0U Active CN216240995U (en) | 2021-12-08 | 2021-12-08 | Permanent magnet neodymium iron boron rotor EGR valve for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216240995U (en) |
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2021
- 2021-12-08 CN CN202123078326.0U patent/CN216240995U/en active Active
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