CN113738516A - Electric actuator for control valve of automobile exhaust system - Google Patents
Electric actuator for control valve of automobile exhaust system Download PDFInfo
- Publication number
- CN113738516A CN113738516A CN202111056298.4A CN202111056298A CN113738516A CN 113738516 A CN113738516 A CN 113738516A CN 202111056298 A CN202111056298 A CN 202111056298A CN 113738516 A CN113738516 A CN 113738516A
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- Prior art keywords
- gear
- shell
- gear set
- torsion spring
- exhaust system
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- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 3
- JAYCNKDKIKZTAF-UHFFFAOYSA-N 1-chloro-2-(2-chlorophenyl)benzene Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1Cl JAYCNKDKIKZTAF-UHFFFAOYSA-N 0.000 description 11
- 101100084627 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) pcb-4 gene Proteins 0.000 description 11
- 238000007789 sealing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electric actuator for an automobile exhaust system control valve, which comprises a shell, a motor and a gear set, wherein the shell is internally provided with a containing space; the shell is internally provided with a PCB for controlling the motor to automatically start and stop rotating, a driving shaft connected with the gear set and a torsion spring for driving the gear set to rotate and reset; the drive shaft is arranged at the output end of the gear set, and the torsion spring is sleeved at the gear set rotating shaft outside the drive shaft. According to the invention, the torsion spring connected with the gear set is arranged, and the valve body in the initial state of the actuator is in the opening state, so that when the actuator is in unexpected power failure or damaged, the gear set and the driving shaft can be driven to reset through the resilience of the torsion spring, and the valve cover of the valve body can be driven to rotate to the initial position when the electric actuator is in unexpected power failure or damaged, so that the automobile valve body is ensured to be in the opening and closing state, and the normal use of an automobile exhaust system is ensured.
Description
Technical Field
The invention relates to the technical field of actuators, in particular to an electric actuator for a control valve of an automobile exhaust system.
Background
The actuator is a control device commonly used in automobile accessories, is a controller used for controlling the opening and closing states of a valve body in an automobile engine exhaust system, and can control and regulate the flow of the valve body by being connected with an automobile exhaust valve body so as to ensure the flow of coolant of an automobile battery pack cooling system and the flow of gas of an automobile engine.
The existing electric actuator is generally in a closed state through an exhaust pipe of a valve body after being connected with the valve body, so that the opening and closing of the valve body and the flow regulation can be realized only by controlling the opening and closing degree of the valve body through a controller; however, when the actuator is accidentally powered off or damaged in the using process, the internal gear set can be clamped in the state, the control valve connected with the actuator cannot perform flow regulation, the valve body cannot ensure sufficient exhaust flow to perform gas emission when the automobile engine exhaust system continuously works, the phenomenon that gas cannot be sufficiently discharged is easily caused, and the normal use of the automobile exhaust system is influenced.
The electric actuator is connected with the gear set, and the valve body in the initial state of the actuator is in an opening state, so that when the actuator is accidentally powered off or damaged, the gear set and the driving shaft can be driven to reset through resilience of the torsion spring, the valve body valve cover of the automobile exhaust system is ensured to rotate back to the opening state, the automobile exhaust system is ensured to have enough exhaust flow, and the electric actuator can be normally used.
Disclosure of Invention
The present invention is directed to an electric actuator for a control valve of an exhaust system of an automobile to solve the above-mentioned problems of the related art.
In order to achieve the above purpose, the solution of the invention is: an electric actuator for an automobile exhaust system control valve comprises a shell, a motor and a gear set, wherein the shell is internally provided with a containing space, the motor is arranged in the containing space, and the gear set is arranged in the containing space and is connected with the motor; the shell is internally provided with a PCB for controlling the motor to automatically start and stop rotating, a driving shaft connected with the gear set and a torsion spring for driving the gear set to rotate and reset; the drive shaft sets up the output end department at the gear train, the PCB board sets up in the gear train top, the gear train axis of rotation department in the drive shaft outside is established to the torsional spring cover.
Further, the housing comprises a cover body and a machine shell; the cover body is tightly attached to the machine shell, and a containing space is formed in the machine shell; the connection part of the cover body and the shell is hermetically connected in a laser welding mode.
Still further, the housing space is provided with a positioning portion for restricting displacement of the motor and the gear train.
Furthermore, the outer surface of the shell is provided with a convex wiring part; the wiring portion is of a hollow structure, and a conductive through hole is formed between the hollow cavity of the wiring portion and the accommodating space.
Furthermore, the casing is also provided with air holes, and breathing membranes are arranged in the air holes and used for balancing the air pressure values inside and outside the actuator.
Further, a fixing portion for limiting the movement of the motor is arranged in the accommodating space.
Further, the gear set comprises a first gear, a second gear and a third gear which are meshed in sequence; the gear is sleeved on an output shaft of the motor; the gear two-way is arranged in the accommodating space through a rotating shaft; the third gear is sleeved on the outer side of the driving shaft and drives the driving shaft to rotate through the rotation of the third gear; the torsion spring is arranged in the machine shell below the third gear, one support leg of the torsion spring is connected with the third gear, and the other support leg of the torsion spring is connected with the machine shell.
Furthermore, gear three is sector gear, be equipped with the joint portion that is less than gear thickness on the gear three, be equipped with the recess that is used for holding the torsional spring stabilizer blade in the joint portion.
Furthermore, a concave part is arranged in the shell, and the concave part comprises a main concave groove and an auxiliary concave groove which are communicated with each other; the main concave groove is used for accommodating a gear III, and the auxiliary concave groove is used for accommodating a gear II; the inner side of the main concave groove is provided with an annular bulge with the bottom edge being flush, the main concave groove of the annular bulge is concentrically arranged, an opening part for limiting the displacement of the driving shaft is formed on the inner side of the annular bulge, and one end of the driving shaft penetrates through the opening part and extends to the outer side of the shell; still be equipped with the spacing groove that is used for holding the torsional spring between main depressed groove and the annular bulge, spacing groove department still is equipped with the extending groove that is used for holding the torsional spring stabilizer blade.
Furthermore, a first bearing and a second bearing are arranged in the opening part on the outer side of the driving shaft; the first bearing is located between the third gear and the second bearing.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the torsion spring connected with the gear set is arranged, and the valve body in the initial state of the actuator is in the opening state, so that when the actuator is in unexpected power failure or damaged, the gear set and the driving shaft can be driven to reset through the self resilience of the torsion spring, and the valve cover of the valve body can be driven to rotate to the initial position when the electric actuator is in unexpected power failure or damaged, so that the automobile valve body is ensured to be in the opening and closing state, and the normal use of an automobile exhaust system is ensured;
(2) according to the invention, the cover body and the shell form the shell, and the joint between the shell and the cover body is connected in a laser welding manner, so that the sealing effect of the shell can be improved, and the electric actuator is ensured to have good dustproof and waterproof properties; the breathing membrane not only can ensure the balance of the air pressure values inside and outside the actuator through the air permeability of the breathing membrane, avoid the overvoltage damage of internal elements, but also can prevent dust and water vapor of the external environment from entering the actuator, and further ensures the dustproof and waterproof performances of the actuator.
(3) According to the invention, the magnet block is adopted, and the induction chip is arranged on the PCB corresponding to the magnet block, so that the induction chip and the magnet block can form a sensor structure after being combined, the rotation angle of the driving shaft and the third gear can be induced by the sensor structure, the actuator can control the actual rotation angle of the driving shaft and the third gear through the PCB, the intelligent control of the actuator on the opening and closing angle of the valve body valve cover is met, and the exhaust flow of an automobile exhaust system is ensured.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic perspective view of the cover of the present invention
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is a schematic view of the assembly structure of the motor and the gear set inside the housing according to the present invention;
FIG. 6 is a schematic diagram of the internal structure of the housing of the present invention;
FIG. 7 is a schematic perspective view of the housing of the present invention;
fig. 8 is a schematic view of an assembly structure of the driving shaft and the third gear of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the cover body 1, the limiting plate 11, the first arc-shaped groove 12, the first fixed seat 13, the guide part 14, the second convex ring 15 and the positioning seat 16;
the casing 2, the air vent 21, the mounting part 22, the wiring part 23, the opening part 24, the concave part 25, the main concave groove 251, the bump 252, the limiting groove 253, the extension groove 254 and the auxiliary concave groove 255; the assembly part 26, the assembly groove 261, the fixing column 262, the second arc-shaped groove 27, the fixing groove 28 and the second fixing seat 29;
the driving shaft 3, a first bearing 31 and a second bearing 32;
the PCB board 4, the conductive antenna 41, the wiring antenna 42, the induction chip 43 and the magnet block 44;
a motor 5;
the gear set 6, the first gear 61, the second gear 62, the third gear 63, the clamping part 631 and the groove 632;
the fixing piece 7, the fixing ring 71 and the limiting elastic sheet 72;
a torsion spring 8;
a breathing membrane 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The first embodiment is as follows:
as shown in fig. 1 to 8, an electric actuator for an exhaust system control valve of an automobile includes a housing having a receiving space therein, a motor 5 disposed in the receiving space, and a gear set 6 disposed in the receiving space and connected to the motor 5; the shell is internally provided with a PCB (printed circuit board) 4 for controlling the motor 5 to automatically start and stop rotating, a driving shaft 3 connected with the gear set 6 and a torsion spring 8 for driving the gear set 6 to rotate and reset; the driving shaft 3 is arranged at the output end of the gear set 6, the PCB 4 is arranged above the gear set 6, and the torsion spring 8 is sleeved at the rotating shaft of the gear set 6 outside the driving shaft 3; the PCB 4 is connected with an automobile ECU (electronic control Unit) in a wired or wireless connection mode, and a valve rod of an automobile exhaust valve body is connected with a driving shaft 3 of an actuator; after the electric actuator is connected with the automobile exhaust valve body, the valve rod of the valve body is connected with the driving shaft 3, and the automobile exhaust valve body is in an open state under the condition that the actuator does not work, so that the automobile can normally exhaust; after the PCB 4 receives a control signal, the motor 5 is controlled to work, the motor 5 can drive the gear set 6 to rotate and is linked with the driving shaft 3 to rotate, and at the moment, the valve rod of the valve body rotates along with the gear set, so that the opening and closing degree of the valve cover of the automobile valve body can be adjusted through the rotating valve rod, and the flow adjustment of the valve body and the closing operation of the valve body are realized; the gear set 6 can continuously compress the torsion spring 8 in the rotation process, and if the motor 5 normally stops rotating, the motor 5 can limit the rotation of the gear set 6, so that the torsion spring 8 cannot change; when the electric actuator is powered off or damaged accidentally, the limitation of the motor 5 on the gear set 6 disappears, the gear set 6 can reset under the effect of the resilience force of the torsion spring 8, the electric actuator is ensured to drive the driving shaft 3 to rotate, and the valve cover of the valve body rotates to the initial position, so that the automobile valve body is ensured to be in an opening and closing state, and the normal use of an automobile exhaust system is ensured;
referring to fig. 1, fig. 2, and fig. 4, in the present embodiment, the housing includes a cover 1 and a casing 2; the cover body 1 is tightly attached to the casing 2, and a containing space is formed inside the casing 2; the connection part of the cover body 1 and the shell 2 is hermetically connected in a laser welding mode; the opening end of the casing 2 is inwards recessed to form a circle of first convex ring, the outer edge of the cover body 1 is provided with a circle of second convex ring 15, the shape of the first convex ring is matched with that of the second convex ring 15, after the cover body 1 and the casing 2 are tightly attached, the first convex ring and the second convex ring 15 are mutually abutted and clamped, the attachment part of the cover body 1 and the casing 2 forms a step-shaped sealing part, and after the sealing part is subjected to laser welding, seams disappear, the sealing performance of the connection part of the cover body 1 and the casing 2 is effectively improved, environmental dust and water vapor are prevented from entering the containing space through the assembly gaps of the cover body 1 and the casing 2, and the sealing effect of the casing is further improved;
in this embodiment, the casing 2 is further provided with a mounting portion 22, the mounting portions 22 are provided with mounting holes, and the mounting holes are provided with bushings, so that the casing 2 can be stably assembled with other components through the mounting portions 22;
referring to fig. 3, 5-7, in the present embodiment, the accommodating space is provided with a positioning portion for limiting the displacement of the motor 5 and the gear set 6; the positioning part comprises a first limiting part for limiting the displacement of the motor 5 and a second limiting part for limiting the displacement of the gear set 6; the first limiting piece comprises a first arc-shaped groove 12 arranged in the cover body 1, limiting plates 11 arranged at two ends of the first arc-shaped groove 12 and a second arc-shaped groove 27 arranged in the machine shell 2; the first arc-shaped groove 12 and the second arc-shaped groove 27 are matched with the outer shape of the motor 5, so that after the cover body 1 is attached to the shell 2, the first arc-shaped groove 12 and the second arc-shaped groove 27 are mutually butted to form a cylindrical arc-shaped cavity for accommodating the motor 5; in this embodiment, a fixing member 7 is further disposed in the casing 2, and the fixing member 7 includes a fixing ring 71 and a limiting elastic sheet 72; fixing holes are formed in the two sides of the fixing ring 71, and the motor 5 can be locked inside the second arc-shaped groove 27 after being matched with fixing bolts; the motor 5 can be elastically pressed in the second arc-shaped groove 27 by the limiting elastic sheet 72, and the up-down, left-right and front-back displacement of the motor 5 can be effectively limited by matching with the limiting plates 11 at the two ends; the second limiting part comprises a first fixing seat 13 and a second fixing seat 29 which are arranged in the cover body 1, a positioning seat 16 and a casing 2, and is used for limiting the vertical displacement of the gear set 6 and ensuring the stable rotation of the gear set 6; in this embodiment, an assembly groove 261 for accommodating the limiting elastic sheet 72 and a fixing column 262 for fixing the fixing bolt used in cooperation with the fixing ring 71 are disposed at one end of the second arc-shaped groove 27, so that the assembly groove 261 and the fixing column 262 form the auxiliary assembly 26 of the fixing member 7 in the casing 2;
in this embodiment, the cover 1 is further provided with a guiding portion 14 for positioning when the cover 1 is assembled with the housing 2;
referring to fig. 1-2 and 4-7, in the present embodiment, a protruding wiring portion 23 is disposed on an outer surface of the housing 2; the wiring part 23 is of a hollow structure, and a conductive through hole is formed between the hollow cavity of the wiring part 23 and the accommodating space; a conductive structure is arranged between the PCB 4 and the motor 5, and comprises a wiring antenna 42 connected with the PCB 4 and a conductive antenna 41 connected with the motor 5; the wiring antenna 42 is of an L-shaped structure, the conductive antenna 41 is of a U-shaped structure, one end of the wiring antenna 42 penetrates through the conductive through hole and extends into the hollow cavity of the wiring part 23, one end of the conductive antenna 41 is connected with the PCB 4, and the other end of the conductive antenna is connected with the conductive electrode of the motor 5, so that when the electric actuator is connected with an external circuit, the working power supply of the PCB 4 can be switched on through the wiring antenna 42, and the motor 5 is controlled to be electrified and rotated to work after the PCB 4 receives a control signal; in this embodiment, the inside of the casing 2 is further provided with a fixing groove 28 for fixing the conductive antenna 41, so as to ensure that the conductive electrode of the motor 5 can be stably connected with the conductive antenna 41;
referring to fig. 1, 4, 6 and 7, in the present embodiment, an air hole 21 is further formed on the casing 2, and a breathing membrane 9 is disposed in the air hole 21 for balancing the pressure values of the air inside and outside the actuator; in this embodiment, the breathing membrane 9 is a breathable water blocking membrane, so that dust and water vapor in the external environment are prevented from entering the inside of the actuator while the pressure values of the air inside and outside the actuator are ensured, and the dustproof and waterproof performance of the actuator is ensured;
referring to fig. 2, 4 and 5, in the present embodiment, the gear set 6 includes a first gear 61, a second gear 62 and a third gear 63 which are meshed in sequence; the first gear 61 is sleeved on an output shaft of the motor 5; the second gear 62 is arranged in the accommodating space through a rotating shaft; the third gear 63 is sleeved on the outer side of the driving shaft 3, and the driving shaft 3 is driven to rotate through the rotation of the third gear 63; the torsion spring 8 is arranged in the machine shell 2 below the gear III 63, one support leg of the torsion spring 8 is connected with the gear III 63, and the other support leg is connected with the machine shell 2; the second gear 62 is a T-shaped gear, the diameter of an upper section gear ring of the second gear 62 is larger, and the diameter of a lower section gear ring is smaller; when the first gear 61, the second gear 62 and the third gear 63 are sequentially assembled, the first gear 61 is meshed with the upper section toothed ring of the second gear 62, and the lower section toothed ring of the second gear 62 is meshed with the third gear 63, so that after the assembly, the transmission ratio of the gear set 6 can be ensured, the overall occupied space of the gear set 6 can be reduced, the overall size of the electric actuator is optimized, the size of the electric actuator is reduced, and the assembly and use of the electric actuator are facilitated; two support legs of the torsion spring 8 are respectively connected with the gear III 63 and the casing 2, so that in the rotation process of the gear set 6, the support legs of the torsion spring 8 at the gear III 63 move, the support legs of the torsion spring 8 at the casing 2 are clamped, the torsion spring 8 is driven to deform, the torsion spring 8 generates torque, and the torsion spring 8 has enough force (resilience force) to push the gear set 6 to rotate and reset when the electric actuator is accidentally powered off or damaged;
referring to fig. 2, 5 and 8, in the present embodiment, the gear wheel three 63 is a sector gear, a clamping portion 631 lower than the gear wheel is disposed on the gear wheel three 63, and a groove 632 for accommodating the leg of the torsion spring 8 is disposed on the clamping portion 631; when the torsion spring 8 is connected with the third gear 63, the support legs of the torsion spring 8 can be clamped into the grooves 632 of the clamping portion 631, and the third gear 63 can push the support legs of the torsion spring 8 to synchronously rotate and move through the clamping portion 631 when rotating, so that the torsion spring 8 is driven to deform, and the torsion spring 8 is ensured to have enough resilience to drive the third gear 63 to rotate and reset when being used as a resetting piece;
referring to fig. 5-7, in the present embodiment, a concave portion 25 is disposed inside the housing 2, and the concave portion 25 includes a main concave groove 251 and an auxiliary concave groove 255 that are communicated with each other; the main concave groove 251 is used for accommodating a gear III 63, and the auxiliary concave groove 255 is used for accommodating a gear II 62; the inner side of the main concave groove 251 is provided with an annular bulge with the bottom edge being flush, the main concave groove 251 of the annular bulge is concentrically arranged, the inner side of the annular bulge is provided with an opening part 24 for accommodating a driving shaft 3, and one end of the driving shaft 3 passes through the opening part 24 and extends to the outer side of the shell; a limiting groove 253 for accommodating the torsion spring 8 is further arranged between the main concave groove 251 and the annular protrusion, and an extending groove 254 for accommodating a leg of the torsion spring 8 is further arranged at the limiting groove 253; the structure of the casing 2 can be optimized by the concave part 25, so that the second gear 62 and the third gear 63 can be stably assembled and connected in the concave part 25, meanwhile, the annular protrusion can effectively support the third gear 63, the limiting groove 253 can be used for accommodating the torsion spring 8, the extension groove 254 can limit the displacement of the support leg of the torsion spring 8, and when the third gear 63 pushes the torsion spring 8 to rotate, the other end of the torsion spring 8 generates a certain resistance, so that the torsion spring 8 can deform under stress; the driving shaft 3 extending to the outside of the shell through the opening part 24 can be conveniently connected with the valve rod of the automobile valve body, so that the automobile valve rod is driven to rotate, and the working state of the valve body is controlled;
in this embodiment, the protrusion 252 is disposed in the main recess 251, and when one of the legs of the torsion spring 8 is inserted into the groove 632 of the clamping portion 631 of the gear three 63, which is not in contact with the torsion spring 8, is abutted against the protrusion 252 under the action of the torsion spring 8, so that the protrusion 252 can limit the rotation angle of the gear three 63, and it is ensured that the gear three 63 can be stopped and limited by the protrusion 252 when being reset under the action of the torsion spring 8, so that the gear set 6 returns to the initial state;
referring to fig. 4 and 8, in the present embodiment, a first bearing 31 and a second bearing 32 are disposed in the opening portion 24 at the outer side of the driving shaft 3; the first bearing 31 is positioned between the third gear 63 and the second bearing 32; the first bearing 31 can be a needle bearing, and the second bearing 32 can be an oil bearing, so that when the driving shaft 3 is arranged in the opening part 24 of the machine shell 2, the driving shaft can keep stable and flexible rotation;
in this embodiment, the magnet block 44 is further disposed in the center of the gear three 63 above the driving shaft 3, the sensing chip 43 is disposed on the PCB 4 directly opposite to the magnet block 44, so that the sensing chip 43 and the magnet block 44 can be combined to form a sensor structure, and the rotation angles of the driving shaft 3 and the gear three 63 are sensed, so that the PCB 4 controls the motor 5 to stop rotating after the driving shaft 3 and the gear three 63 rotate to a set angle, and further the actuator can control the actual use angle of the driving shaft 3 and the gear three 63 through the PCB 4, thereby satisfying the intelligent control of the actuator on the opening and closing angle of the valve cover of the valve body, and ensuring the exhaust flow of the automobile exhaust system;
in summary, the electric actuator for the control valve of the automobile exhaust system provided by the invention has the advantages that by arranging the torsion spring 8 connected with the gear set 6, when the actuator drives the gear set 6 to rotate through the motor 5 and is linked with the driving shaft 3 to rotate, the valve body valve rod connected with the driving shaft 3 can be driven to rotate, the opening and closing degree of the valve cover is adjusted through the rotating valve rod, and the operation of automatically adjusting the flow or closing the valve body is realized; torsional spring 8 can drive gear train 6 and drive shaft 3 through self resilience and reset when electric actuator cuts off the power supply or damages by accident, can drive the valve gap gyration initial position of valve body when guaranteeing electric actuator unexpected outage or damage to ensure that the car valve body is in the state of opening and shutting, guarantee car exhaust system's normal use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An electric actuator for an automobile exhaust system control valve comprises a shell, a motor (5) and a gear set (6), wherein the shell is internally provided with a containing space, the motor (5) is arranged in the containing space, and the gear set is arranged in the containing space and connected with the motor (5); the method is characterized in that: the shell is internally provided with a PCB (4) for controlling the motor (5) to automatically open and close and rotate, a driving shaft (3) connected with the gear set (6) and a torsion spring (8) for driving the gear set (6) to rotate and reset; the drive shaft (3) is arranged at the output end of the gear set (6), the PCB (4) is arranged above the gear set (6), and the torsion spring (8) is sleeved at the rotating shaft of the gear set (6) outside the drive shaft (3).
2. The electric actuator for an exhaust system control valve of an automobile according to claim 1, wherein: the shell comprises a cover body (1) and a shell (2); the cover body (1) is tightly attached to the casing (2) and forms a containing space in the casing (2); the connection part of the cover body (1) and the shell (2) is hermetically connected in a laser welding mode.
3. An electric actuator for an exhaust system control valve of an automobile according to claim 2, wherein: the accommodating space is provided with a positioning part for limiting the displacement of the motor (5) and the gear set (6).
4. An electric actuator for an exhaust system control valve of an automobile according to claim 2, wherein: the outer surface of the shell (2) is provided with a convex wiring part (23); wiring portion (23) are established to hollow structure, and are equipped with electrically conductive through-hole between the cavity of wiring portion (23) and the storage space.
5. An electric actuator for an exhaust system control valve of an automobile according to claim 4, wherein: the shell (2) is also provided with air holes (21), and breathing membranes (9) are arranged in the air holes (21) and used for balancing the air pressure values inside and outside the actuator.
6. An electric actuator for an exhaust system control valve of an automobile according to any one of claims 2 to 5, wherein: the gear set (6) comprises a first gear (61), a second gear (62) and a third gear (63) which are meshed in sequence; the first gear (61) is sleeved on an output shaft of the motor (5); the second gear (62) is arranged in the accommodating space through a rotating shaft; the third gear (33) is sleeved on the outer side of the driving shaft (3), and the driving shaft (3) is driven to rotate through the rotation of the third gear (33); the torsion spring (8) is arranged in the machine shell (2) below the gear III (33), one support leg of the torsion spring (8) is connected with the gear III (33), and the other support leg is connected with the machine shell (2).
7. An electric actuator for an exhaust system control valve of an automobile according to claim 6, wherein: gear three (63) are sector gear, be equipped with joint portion (631) that is less than gear thickness on gear three (63), be equipped with recess (632) that are used for holding torsional spring (8) stabilizer blade on joint portion (631).
8. An electric actuator for an exhaust system control valve of an automobile according to claim 7, wherein: a concave part (25) is arranged in the shell (2), and the concave part (25) comprises a main concave groove (251) and an auxiliary concave groove (255) which are communicated with each other; the main concave groove (251) is used for accommodating a gear three (63), and the auxiliary concave groove (255) is used for accommodating a gear two (62); the inner side of the main concave groove (251) is provided with an annular bulge with the bottom edge being flush, the main concave groove (251) of the annular bulge is concentrically arranged, the inner side of the annular bulge is provided with an opening part (24) for limiting the displacement of the driving shaft (3), and one end of the driving shaft (3) penetrates through the opening part (24) and extends to the outer side of the shell; a limiting groove (253) used for accommodating the torsion spring (8) is further arranged between the main concave groove (251) and the annular protrusion, and an extending groove (254) used for accommodating a support leg of the torsion spring (8) is further arranged at the limiting groove (253).
9. The electric actuator for an exhaust system control valve of an automobile according to claim 8, wherein: a first bearing (31) and a second bearing (32) are arranged in an opening part (24) on the outer side of the driving shaft (3); the first bearing (31) is located between the third gear (63) and the second bearing (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111056298.4A CN113738516A (en) | 2021-09-09 | 2021-09-09 | Electric actuator for control valve of automobile exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111056298.4A CN113738516A (en) | 2021-09-09 | 2021-09-09 | Electric actuator for control valve of automobile exhaust system |
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| CN113738516A true CN113738516A (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111056298.4A Pending CN113738516A (en) | 2021-09-09 | 2021-09-09 | Electric actuator for control valve of automobile exhaust system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892912A (en) * | 2010-08-06 | 2010-11-24 | 南京奥联汽车电子电器有限公司 | Non-contact electronic throttle |
| DE102010025207A1 (en) * | 2010-06-21 | 2011-12-22 | Sbs Feintechnik Gmbh & Co.Kg | Drive for flaps in gas-guiding pipes, particularly in exhaust systems, of combustion engine, has housing, in which electric motor is accommodated |
| CN104727989A (en) * | 2015-03-23 | 2015-06-24 | 凯龙高科技股份有限公司 | Electric EGR valve |
| CN111188689A (en) * | 2020-03-09 | 2020-05-22 | 杰锋汽车动力系统股份有限公司 | Exhaust valve structure of automobile exhaust system |
| CN216008701U (en) * | 2021-09-09 | 2022-03-11 | 芜湖力锐德电子科技有限公司 | Electric actuator for control valve of automobile exhaust system |
-
2021
- 2021-09-09 CN CN202111056298.4A patent/CN113738516A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010025207A1 (en) * | 2010-06-21 | 2011-12-22 | Sbs Feintechnik Gmbh & Co.Kg | Drive for flaps in gas-guiding pipes, particularly in exhaust systems, of combustion engine, has housing, in which electric motor is accommodated |
| CN101892912A (en) * | 2010-08-06 | 2010-11-24 | 南京奥联汽车电子电器有限公司 | Non-contact electronic throttle |
| CN104727989A (en) * | 2015-03-23 | 2015-06-24 | 凯龙高科技股份有限公司 | Electric EGR valve |
| CN111188689A (en) * | 2020-03-09 | 2020-05-22 | 杰锋汽车动力系统股份有限公司 | Exhaust valve structure of automobile exhaust system |
| CN216008701U (en) * | 2021-09-09 | 2022-03-11 | 芜湖力锐德电子科技有限公司 | Electric actuator for control valve of automobile exhaust system |
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