CN203774950U - Motor protection structure for electric EGR valves - Google Patents
Motor protection structure for electric EGR valves Download PDFInfo
- Publication number
- CN203774950U CN203774950U CN201420189002.5U CN201420189002U CN203774950U CN 203774950 U CN203774950 U CN 203774950U CN 201420189002 U CN201420189002 U CN 201420189002U CN 203774950 U CN203774950 U CN 203774950U
- Authority
- CN
- China
- Prior art keywords
- motor
- ring
- rear cover
- electric
- annular flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims description 20
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000007704 transition Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a motor protection structure for electric EGR valves, comprising a gasket mechanism which is assembled between a motor and a rear motor cover and used for buffering motor power. The gasket mechanism comprises an outer ring in interference fit with the rear motor cover, an inner ring in interference fit with the motor, and an annular flat gasket arranged between the rear motor cover and the motor. The annular flat gasket, the outer end face of the outer ring, and the outer end face of the inner ring are formed in one step. The gap between the motor and the rear motor cover is eliminated, axial play and radial run-out of the motor are effectively eliminated, that an electric EGR valve does not fail due to motor fault is ensured on the basis of improving the working stability of the motor, and the service life of EGR valves is prolonged.
Description
Technical field
The utility model 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 slows down by by reduction box, rotatablely moving of motor being transferred out through reduction gearing.
Existing motor rear cover is that face contacts with face with the assembling between motor, 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 when valve is worked.This power transmission principle due to 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 when vibration experiment.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of electric motor protecting structure being applied in electric EGR valve is 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, technical solution adopted in the utility model is as follows.
A kind of electric motor protecting structure of electric EGR valve; comprise the packing ring mechanism being assemblied between motor and motor rear cover for buffer motor power; described 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 utility model 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 obtained technological progress of the utility model is as follows.
The space of having eliminated between motor and motor rear cover that arranges of the present utility model, thereby axial motion and the circular runout of motor have effectively been eliminated, stability and the EGR valve actuation power transmission stability of motor have greatly been 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, this new structure is simple, 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 utility model.
Fig. 3 is the assembly structure schematic diagram of the utility model 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 utility model 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 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 utility model and electric EGR valve motor as shown in Figure 3, after the utility model is assemblied between motor rear cover and motor, eliminated the space between motor rear cover and motor, each part can be combined together well after assembling completes, reduced relative motion, each gear clearance of transmission mechanism is even, has reduced friction, the valve catching phenomenon also causing with regard to greatly reducing wearing and tearing.
Claims (2)
1. the electric motor protecting structure of an electric EGR valve; it is characterized in that: comprise the packing ring mechanism being assemblied between motor (2) and motor rear cover (1) for buffer motor power; described 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 |
|---|---|---|---|
| CN201420189002.5U CN203774950U (en) | 2014-04-17 | 2014-04-17 | Motor protection structure for electric EGR valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420189002.5U CN203774950U (en) | 2014-04-17 | 2014-04-17 | Motor protection structure for electric EGR valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774950U true CN203774950U (en) | 2014-08-13 |
Family
ID=51292099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420189002.5U Expired - Lifetime CN203774950U (en) | 2014-04-17 | 2014-04-17 | Motor protection structure for electric EGR valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887916A (en) * | 2014-04-17 | 2014-06-25 | 无锡隆盛科技股份有限公司 | Motor protection structure of electric EGR valve |
-
2014
- 2014-04-17 CN CN201420189002.5U patent/CN203774950U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887916A (en) * | 2014-04-17 | 2014-06-25 | 无锡隆盛科技股份有限公司 | Motor protection structure of electric EGR valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |