CN103887916A - Motor protection structure of electric EGR valve - Google Patents
Motor protection structure of electric EGR valve Download PDFInfo
- Publication number
- CN103887916A CN103887916A CN201410155977.0A CN201410155977A CN103887916A CN 103887916 A CN103887916 A CN 103887916A CN 201410155977 A CN201410155977 A CN 201410155977A CN 103887916 A CN103887916 A CN 103887916A
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- Prior art keywords
- motor
- rear cover
- egr valve
- electric
- ring
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- Electrically Driven Valve-Operating Means (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention discloses a motor protection structure of an electric EGR valve. The motor protection structure comprises a washer mechanism assembled between a motor and a motor rear cover and used for buffering motor power. The washer mechanism comprises an outer circle in interference fit with the motor rear cover, an inner ring in interference fit with the motor and an annular flat washer arranged between the motor rear cover and the motor, and the annular flat washer, the outer end face of the outer ring and the outer end face of the inner ring are integrally formed. According to the motor protection structure, a gap between the motor and the motor rear cover is eliminated, and therefore axial moving and radial runout of the motor are effectively eliminated; on the basis that operating stability of the motor is improved, it is guaranteed that the electric EGR valve cannot fail due to motor faults, and the service life of the electric EGR valve is prolonged.
Description
Technical field
The present invention relates to technical field of motors, particularly the electric motor protecting structure of electric EGR valve in a kind of engine exhaust emission gas recirculation system.
Background technology
EGR valve is as the effect of playing the executive component that regulates EGR gas flow in engine exhaust-gas recirculating system (egr system).At the electric EGR valve of use, generally need rotatablely moving of motor to be converted into the rectilinear motion of valve switch at present, in the conversion process of the two motion, the stability of motor plays a part crucial.
Existing EGR valve is generally that motor is inserted in two pin holes of motor housing by two contact pins of both positive and negative polarity, and motor gear is meshed with three transition gears, then three transition gears are meshed with the reduction gearing in reduction box, in such assembling situation, motor leads to after direct current, power is transferred to transition gear by motor, then warp is transferred out rotatablely moving of motor by reduction box after reduction gearing is slowed down.
Assembling between existing motor rear cover and motor is that face contacts with face, is very stiff and demanding contact between them, does not have elasticity to say; They have a lot of spaces after having assembled in addition, and as shown in Figure 1, this structure can make motor produce axial motion and circular runout in the time that valve is worked.Due to this power transmission principle of electric EGR valve; bindiny mechanism is many; in addition the unsteadiness of motor; in real productive experiment, can often occur that power transmission wild effect, particularly valve often can cause because motor rear cover is loosening the phenomenon of the fracture of motor contact pin, the fracture of transducer contact pin, transition gear serious wear and the stuck inefficacy of valve to occur in the time of vibration experiment.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of electric motor protecting structure being applied in electric EGR valve be provided, improve machine operation stability and on basis, guarantee that electric EGR valve can not cause because of electrical fault Problem of Failure.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
A kind of electric motor protecting structure of electric EGR valve; comprise and be assemblied in the packing ring mechanism for buffer motor power between motor and motor rear cover; described electric packing ring mechanism comprises and the outer ring of motor rear cover interference fit, and the inner ring of motor interference fit and be arranged on motor rear cover and motor between annular flat packing ring, the outer face of described annular flat packing ring and outer ring and the outer face one-shot forming of inner ring.
Improvement of the present invention is: described annular flat packing ring, outer ring, inner ring adopt polytetrafluoroethylene to carry out injection mo(u)lding.
Owing to having adopted above technical scheme, the invention technological progress is as follows.
The space of having eliminated between motor and motor rear cover that arranges of the present invention, thereby axial motion and the circular runout of motor are effectively eliminated, stability and the EGR valve actuation power transmission stability of motor are greatly strengthened, solve various contact pin breakage problems and the transition gear wear problem of the power section of EGR valve, the useful life of having improved valve.In addition, the present invention is simple in structure, and packing ring mechanism only needs single injection-molded; With low cost, the part of an injection moulding can complete without machine work, and can produce in enormous quantities; The present invention is owing to having adopted polytetrafluoroethylmaterial material, and product has just had the advantage of high resiliency, high tenacity, high temperature resistant, high-wearing feature, efficiently solves the problem of interference fit difficult assembling in assembly technology.
Accompanying drawing explanation
Fig. 1 is the motor rear cover of conventional electric EGR valve and the assembly structure schematic diagram of motor.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the assembly structure schematic diagram of the present invention and electric EGR valve motor.
Wherein: 1. motor rear cover, 2. motor, 11. annular flat packing rings, 12. outer rings, 13. inner rings.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
An electric motor protecting structure for electric EGR valve, its structure as shown in Figure 2, comprises the packing ring mechanism being assemblied between motor 2 and motor rear cover 1, packing ring mechanism is for buffer motor power.
Described electric packing ring mechanism comprises annular flat packing ring 11, outer ring 12 and inner ring 13.Wherein annular flat packing ring 11 is arranged between motor rear cover and motor, for eliminating the space between motor rear cover inner face and motor outer end, and axial power motor rear cover being produced for buffer motor.Outer ring 12 and motor rear cover interference fit, motor rear cover 1 can be eliminated the space between motor rear cover and motor sidewall after closing up like this, can effectively prevent the loosening phenomenon that motor rear cover 1 occurs at work.Inner ring 13 and motor interference fit, like this motor rear cover 1 close up after annular flat packing ring 11 just can, together with motor embracing tightly, effectively eliminate axial motion and the circular runout of motor, thereby solve the problem that kind part contact pin ruptures.
Before practical set, first adopt polytetrafluoroethylene to carry out injection mo(u)lding annular flat packing ring, outer ring, inner ring, utilize high resiliency, high tenacity, the feature high temperature resistant, high-wearing feature of polytetrafluoroethylene to be made into packing ring mechanism.The assembly structure of the present invention and electric EGR valve motor as shown in Figure 3, after the present invention is assemblied between motor rear cover and motor, eliminate the space between motor rear cover and motor, each part can be combined together well after assembling completes, reduce relative motion, each gear clearance of transmission mechanism is even, has reduced friction, also just greatly reduces the valve catching phenomenon of wearing and tearing and cause.
Claims (2)
1. the electric motor protecting structure of an electric EGR valve; it is characterized in that: comprise and be assemblied in the packing ring mechanism for buffer motor power between motor (2) and motor rear cover (1); described electric packing ring mechanism comprises and the outer ring (12) of motor rear cover interference fit, and the inner ring (13) of motor interference fit and be arranged on motor rear cover and motor between annular flat packing ring (11), the outer face of described annular flat packing ring and outer ring and the outer face one-shot forming of inner ring.
2. a kind of electric motor protecting structure of electric EGR valve according to claim 1, is characterized in that: described annular flat packing ring, outer ring, inner ring adopt polytetrafluoroethylene to carry out injection mo(u)lding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155977.0A CN103887916A (en) | 2014-04-17 | 2014-04-17 | Motor protection structure of electric EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155977.0A CN103887916A (en) | 2014-04-17 | 2014-04-17 | Motor protection structure of electric EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103887916A true CN103887916A (en) | 2014-06-25 |
Family
ID=50956670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410155977.0A Pending CN103887916A (en) | 2014-04-17 | 2014-04-17 | Motor protection structure of electric EGR valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103887916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373255A (en) * | 2014-11-21 | 2015-02-25 | 无锡隆盛科技股份有限公司 | Protection structure of power section of electric EGR valve |
| CN113009336A (en) * | 2021-02-25 | 2021-06-22 | 长春汽车工业高等专科学校 | New energy automobile motor power detection device with elastic buffer mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030133811A1 (en) * | 2002-01-15 | 2003-07-17 | Jen-Yen Yen | Mini water pump |
| CN202931046U (en) * | 2012-09-17 | 2013-05-08 | 珠海格力电器股份有限公司 | Plastic packaging motor stator assembly having electric corrosion resistance structure |
| CN202957730U (en) * | 2012-11-11 | 2013-05-29 | 尾扎郎加泽郎 | Flexible-connection brushless synchronous generator |
| CN103595174A (en) * | 2012-08-14 | 2014-02-19 | 常州市江南减速机有限公司 | A noise-preventing motor |
| CN203774950U (en) * | 2014-04-17 | 2014-08-13 | 无锡隆盛科技股份有限公司 | Motor protection structure for electric EGR valves |
-
2014
- 2014-04-17 CN CN201410155977.0A patent/CN103887916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030133811A1 (en) * | 2002-01-15 | 2003-07-17 | Jen-Yen Yen | Mini water pump |
| CN103595174A (en) * | 2012-08-14 | 2014-02-19 | 常州市江南减速机有限公司 | A noise-preventing motor |
| CN202931046U (en) * | 2012-09-17 | 2013-05-08 | 珠海格力电器股份有限公司 | Plastic packaging motor stator assembly having electric corrosion resistance structure |
| CN202957730U (en) * | 2012-11-11 | 2013-05-29 | 尾扎郎加泽郎 | Flexible-connection brushless synchronous generator |
| CN203774950U (en) * | 2014-04-17 | 2014-08-13 | 无锡隆盛科技股份有限公司 | Motor protection structure for electric EGR valves |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373255A (en) * | 2014-11-21 | 2015-02-25 | 无锡隆盛科技股份有限公司 | Protection structure of power section of electric EGR valve |
| CN113009336A (en) * | 2021-02-25 | 2021-06-22 | 长春汽车工业高等专科学校 | New energy automobile motor power detection device with elastic buffer mechanism |
| CN113009336B (en) * | 2021-02-25 | 2024-02-09 | 长春汽车工业高等专科学校 | New energy automobile motor power detection device with elasticity buffer gear |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140625 |