CN207687297U - A kind of electric EGR valve inner gear structure - Google Patents
A kind of electric EGR valve inner gear structure Download PDFInfo
- Publication number
- CN207687297U CN207687297U CN201721385693.6U CN201721385693U CN207687297U CN 207687297 U CN207687297 U CN 207687297U CN 201721385693 U CN201721385693 U CN 201721385693U CN 207687297 U CN207687297 U CN 207687297U
- Authority
- CN
- China
- Prior art keywords
- annular knurl
- output shaft
- internal gear
- inner gear
- gear structure
- 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.)
- Active
Links
Landscapes
- Gears, Cams (AREA)
Abstract
The utility model is related to a kind of electric EGR valve inner gear structure, including internal gear and output shaft, the center of the internal gear is equipped with interior annular knurl, and the position combined with internal gear on the output shaft is equipped with outer annular knurl.The utility model provides the connecting mode between a kind of internal gear and output shaft of new shape, it is combined together with annular knurl using by internal gear and output shaft, internal gear is set to couple with output shaft more firm, since the mode that engineering plastics injection molding may be used in internal gear is processed, the molding output shaft of annular knurl need to be only directly placed in injection mold, be molded together with internal gear, and the connection consolidated by annular knurl, production technology is improved, manufacturing cost is reduced, extends service life.
Description
Technical field
The utility model is related to a kind of electric EGR valve inner gear structures, are a kind of mechanical structure, are a kind of automobile engines
The mechanical structure of part is a kind of structure of the EGR electrically operated valves for engine.
Background technology
Straight line open and close type electric EGR valve is typically provided with planetary reduction gear.The output shaft of this planetary reduction gear is equipped with one
A internal gear, this internal gear are combined with output shaft, form the output of planetary reduction gear.The planet of existing electric EGR valve subtracts
Various ways are combined between the internal gear and output shaft of fast device, but main is all by the way of being threadedly coupled.Due to defeated
Go out axis connection is the crank of eccentric stiffener, and when work generates vibrations, and is threaded in vibrations and is easy to loosen, and needs to take
More anti-loose measure, these anti-loose measures certainly will increase the complexity and volume of output shaft, while also increase assembly
Difficulty.The such component of similar GER valves, structural requirement is compact as possible, is required in technique as far as possible simply, and existing screw thread
What connection type was unable to fully meets this requirement.
Invention content
In order to overcome problem of the prior art, the utility model proposes a kind of electric EGR valve inner gear structures.Described
Inner gear structure enormously simplifies the connection structure between internal gear and output shaft by the way of secure bond.
What the purpose of this utility model was realized in：A kind of electric EGR valve inner gear structure, including internal gear and output
The center of axis, the internal gear is equipped with interior annular knurl, and the position combined with internal gear on the output shaft is equipped with outer annular knurl.
Further, the internal gear is the engineering plastic gear of injection molding.
Further, the material of the output shaft is metal material.
Further, the gabarit diameter of the outer annular knurl is less than or equal to the diameter of the optical axis portion of output shaft.
Further, the interior annular knurl and outer annular knurl are straight knurling.
Further, the interior annular knurl and outer annular knurl are hatching knurlings.
Further, the cross sectional shape of the annular knurl is triangle.
Further, the cross sectional shape of the annular knurl is trapezoidal.
Further, the protrusion of the outer annular knurl is trapezoidal, and the bottom of the sunk part of interior annular knurl is flat-bottom slot.
Further, the protrusion of the outer annular knurl is trapezoidal, and the bottom of the sunk part of outer annular knurl is flat-bottom slot；
The protrusion of interior annular knurl is trapezoidal, and the bottom of the sunk part of interior annular knurl is flat-bottom slot.
The utility model generate advantageous effect be：The utility model provide a kind of new shape internal gear and output shaft it
Between connecting mode, be combined together with annular knurl using by internal gear and output shaft, so that internal gear is coupled with output shaft more steady
Gu since the mode that engineering plastics injection molding may be used in internal gear is processed, the molding output shaft of annular knurl need to be only directly placed at
The connection in injection mold, being molded together with internal gear, and being consolidated by annular knurl, improves production technology, reduces and be manufactured into
This, extends service life.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of inner gear structure position in EGR valve described in the embodiments of the present invention one；
Fig. 2 is the structural schematic diagram of internal gear described in the embodiments of the present invention one, is the enlarged drawing of A points in Fig. 1；
Fig. 3 is the structural schematic diagram that internal gear is combined with output shaft described in the embodiments of the present invention four, is B in Fig. 2
The enlarged drawing of point；
Fig. 4 is the triangular cross-sectional shape schematic diagram of annular knurl described in the embodiments of the present invention seven, is C-C in Fig. 3
Sectional view；
Fig. 5 is the trapezoidal sectional shape schematic diagram of annular knurl described in the embodiments of the present invention eight, is that C-C is cutd open in Fig. 3
Face figure；
Fig. 6 is the trapezoidal sectional shape schematic diagram of annular knurl described in the embodiments of the present invention ten, is that C-C is cutd open in Fig. 3
Face figure.
Specific implementation mode
Embodiment one：
The present embodiment is a kind of electric EGR valve inner gear structure, as shown in Figure 1, 2.The present embodiment includes internal gear 1 and defeated
The center of shaft 2, the internal gear is equipped with interior annular knurl, and the position combined with internal gear on the output shaft is equipped with outer rolling
Flower.
The present embodiment is that one kind is applied to drive flap 6 to move by starshaped reducing gear 4 and crank mechanism 5 by motor 3
EGR valve transmission mechanism in inner gear structure, see Fig. 1.
The output shaft of internal gear is used to the output torque of motor being transmitted to valve rod flap through gear mechanism, crank mechanism
Component, to realize the linear motion of valve rod flap, to drive flap to be turned on and off valve.
The torque of transmission alternation is needed between internal gear and output shaft, thus it requires connection between the two is reliable, it cannot
There is any loosening.
Two parts of internal gear and output shaft in the present embodiment can all be metal parts, can also be different material
Matter, if internal gear is engineering plastics, output shaft is metal material.
When internal gear is metal material, interior annular knurl will extremely be difficult to be machined.When the material of internal gear is engineering
When plastics, interior annular knurl is then not necessarily to mechanical processing, only need to the metal output shaft that outer annular knurl is completed be placed on internal tooth in injection molding
In the mold of wheel, interior annular knurl self-assembling formation in injection molding, while internal gear and output shaft reliably link together.
When internal gear is engineering plastics, the gabarit diameter of annular knurl on output shaft can be less than the straight of output shaft other parts
Diameter, it is ensured that the stable connection between internal gear and output shaft.
The form of annular knurl can also be it is various, such as：Straight knurling, twill annular knurl and hatching knurling or other types
Annular knurl.
The cross sectional shape of annular knurl can be triangle, can also be other shapes, such as：Trapezoidal or round, oval etc..
Embodiment two：
The present embodiment is the improvement of embodiment one, is refinement of the embodiment about internal gear.Internal tooth described in the present embodiment
Wheel is the engineering plastic gear of injection molding.
Engineering plastics are a kind of materials with good process performance, can be molded into various sufficiently complex shapes.This
Embodiment takes full advantage of this excellent process industrial art performance, forms internal gear and interior annular knurl with injection molding, has abandoned machine completely
Tool is processed, complicated internal gear shape is made directly to be formed in a mold, and the process greatly simplified reduces cost.
Embodiment three：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about output shaft.Described in the present embodiment
The material of output shaft be metal material.
Since output shaft carries larger alternate torque, if certainly will be relatively large in diameter using engineering plastics, therefore, using gold
Belong to material, the selection for being.
It is machined the technique that outer annular knurl is very ripe on the metal material, can use knurling tool on optical axis blank
Extrusion forming, very fast, can also use cold-heading mode together with entire output shaft straight forming.No matter which is used
Kind mode is processed, and cost is very low, meets process costs requirement.
Example IV：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about output shaft.Described in the present embodiment
Outer annular knurl gabarit diameter be less than or equal to output shaft optical axis portion diameter.
To prevent from loosening, the gabarit diameter of knurled portion outside output shaft can be made to than other optical axis portions of output shaft
Diameter it is smaller, or equal to the diameter of other optical axis portions.Output shaft knurled portion 202 can be such as arranged in two sections of optical axises
It 201,, in this way can be with as shown in figure 3, the hole wall at internal gear center can be embedded into output shaft after internal gear injection molding between 203
Keep the combination between internal gear and output shaft more firm.
Embodiment five：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about outer annular knurl and interior annular knurl.This reality
It is straight knurling to apply interior annular knurl described in example and outer annular knurl.
Straight knurling is a kind of common annular knurl, and processing is simple, can carry larger torque, be ideal solution party
Case.But the straight knurling that general standard knurling tool is processed often is applied in positions such as handles, is often not enough to generate transmission torsion
The useful effect of square, therefore, can the special larger annular knurl of projected depth, to meet the requirement for transmitting torque.
Embodiment six：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about outer annular knurl and interior annular knurl.This reality
It is hatching knurling to apply interior annular knurl described in example and outer annular knurl.
Hatching knurling is also a kind of common annular knurl, is usually used in increasing the rough surface of handle, the effect with the present embodiment
It is entirely different, but can use for reference.Using hatching knurling, it can more increase the combination between internal gear and output shaft, can make
With the smaller annular knurl of pattern depth, on the smaller output shaft of diameter.
Embodiment seven：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about knurling shape.The present embodiment institute
The cross sectional shape for the annular knurl stated is triangle, as shown in Figure 4.
Annular knurl cross sectional shape described in the present embodiment refers to the output shaft intercepted with the plane of output shaft central axis upright
Cross sectional shape, the knurling shape in the exterior rim of circular cross-section, Fig. 4 are the cross sectional shapes of enlarged exterior rim annular knurl, rolling
Colored shape is the appearance repeatedly of continuous protruding portion and recessed portion.
It is protruding portion is triangle that so-called cross sectional shape, which is triangle, and triangle is isosceles or non-isosceles triangle, triangle
The bottom edge of shape is merged with the main body of axis, and each vertex of a triangle line is the gabarit diameter edge line of annular knurl.
Embodiment eight：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about knurling shape.The present embodiment institute
The cross sectional shape for the annular knurl stated be it is trapezoidal, as shown in Figure 5.
So-called cross sectional shape is trapezoidal, then is to scabble the apex angle of triangle.Trapezoid cross section has stronger shear resistance,
For transmitting high torque advantageously.There are three types of selections for trapezoidal sectional shape, one is only top is scabbled in protruding portion, separately
One is only flat-bottom slot is formed in the bottom of recessed portion, the third is simultaneously to scabble on the top of protruding portion and recessed portion bottom shape
At rising as high as the banks.
Embodiment nine：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about the knurling shape of trapezoid cross section.
The protrusion of outer annular knurl described in the present embodiment is trapezoidal, and the bottom of the sunk part of interior annular knurl is flat-bottom slot, such as Fig. 5 institutes
Show.
Since sharp slot bottom is easy to form stress concentration, the poor material of this shear resistance of engineering plastics is come
It says, the bottom of sunk part is designed as flat-bottom slot advantageously, therefore, the interior knurled recesses bottom on internal gear is designed as putting down
Fig. 5 is seen at bottom.
Embodiment ten：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment about the knurling shape of trapezoid cross section.
The protrusion of outer annular knurl described in the present embodiment is trapezoidal, and the bottom of the sunk part of outer annular knurl is flat-bottom slot；Interior annular knurl
Protrusion is trapezoidal, and the bottom of the sunk part of interior annular knurl is flat-bottom slot, as shown in Figure 6.
The annular knurl of this shape is somewhat similarly to spline, can transmit high torque, suitable for the output shaft being relatively large in diameter.
Finally it should be noted that being merely intended for describing the technical solutions of the present application, but not for limiting the present application above, although with reference to compared with
The utility model is described in detail in good arrangement, it will be understood by those of ordinary skill in the art that, it can be to this reality
With novel technical solution（Such as form, the form of internal gear, the form of output shaft etc. of GER valves）It modifies or equivalent
It replaces, without departing from the spirit and scope of technical solutions of the utility model.
Claims (8)
1. a kind of electric EGR valve inner gear structure, including internal gear and output shaft, which is characterized in that in the internal gear
The heart is equipped with interior annular knurl, and the position combined with internal gear on the output shaft is equipped with outer annular knurl；The internal gear is to be molded into
The engineering plastic gear of type；The material of the output shaft is metal material.
2. inner gear structure according to claim 1, which is characterized in that the gabarit diameter of the outer annular knurl is less than or waits
In the diameter of the optical axis portion of output shaft.
3. inner gear structure according to claim 2, which is characterized in that the interior annular knurl and outer annular knurl are straight grain rollings
Flower.
4. inner gear structure according to claim 2, which is characterized in that the interior annular knurl and outer annular knurl are reticulate pattern rollings
Flower.
5. inner gear structure according to claim 3 or 4, which is characterized in that the cross sectional shape of the annular knurl is triangle
Shape.
6. inner gear structure according to claim 3 or 4, which is characterized in that the cross sectional shape of the annular knurl is trapezoidal.
7. inner gear structure according to claim 6, which is characterized in that the protrusion of the outer annular knurl be it is trapezoidal,
The bottom of the sunk part of interior annular knurl is flat-bottom slot.
8. inner gear structure according to claim 6, which is characterized in that the protrusion of the outer annular knurl be it is trapezoidal,
The bottom of the sunk part of outer annular knurl is flat-bottom slot；The protrusion of interior annular knurl is trapezoidal, the bottom of the sunk part of interior annular knurl
For flat-bottom slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721385693.6U CN207687297U (en) | 2017-10-25 | 2017-10-25 | A kind of electric EGR valve inner gear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721385693.6U CN207687297U (en) | 2017-10-25 | 2017-10-25 | A kind of electric EGR valve inner gear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207687297U true CN207687297U (en) | 2018-08-03 |
Family
ID=62989305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721385693.6U Active CN207687297U (en) | 2017-10-25 | 2017-10-25 | A kind of electric EGR valve inner gear structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207687297U (en) |
-
2017
- 2017-10-25 CN CN201721385693.6U patent/CN207687297U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130102220A1 (en) | Construction toy | |
| CN104507597B (en) | Produce for transmit rotary motion connector method | |
| WO2018121731A1 (en) | Steering engine housing | |
| CN207687297U (en) | A kind of electric EGR valve inner gear structure | |
| CN202986671U (en) | Automobile outer wheel hub forging structure | |
| CN103890459A (en) | Gear with rigidly connected driveshaft | |
| CN207660732U (en) | A kind of valve rod gear connection structure of electric EGR valve | |
| CN207145542U (en) | A kind of high-accuracy harmonic wave speed reducing machine of robot | |
| CN206190409U (en) | But engine air intake manifold's flat formula cylinder variable structure | |
| CN105882826A (en) | Balance toy car | |
| CN203830727U (en) | Sinter molding assembled camshaft with powder metallurgy cams | |
| CN205841675U (en) | A kind of belt pulley | |
| CN204553476U (en) | For the special rapid shaping bolt of plastics | |
| CN203363059U (en) | Combination tooth of motor tricycle | |
| CN207297805U (en) | Alloy travelling gear | |
| CN103847698A (en) | Dual-ball assembly and windscreen wiper system comprising same | |
| CN209244695U (en) | A kind of electric EGR valve magnet arrangement | |
| CN207454054U (en) | Secondary plastic plastic cam shaft | |
| CN203542992U (en) | Mold core for molding car lampshade | |
| CN204985295U (en) | Car transmission input shaft hub | |
| CN206263211U (en) | The mould of connector between a kind of engine for automobile and gearbox | |
| CN203926539U (en) | Spring bushing | |
| CN204805302U (en) | Two lantern ring transmission connecting rods of cold -heading shaping | |
| CN204850854U (en) | Plunger type attenuator and pivot thereof | |
| CN203362687U (en) | Cylinder bottom flange of tee joint extrusion cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100124 Chen Jialin, 9 hospital, eight Li Zhuang village, Gaobeidian Township, Chaoyang District, Beijing, 7 floor 705, 706 rooms, building 1, Patentee after: Beijing United Bridge Technology Group Co., Ltd. Address before: 100022 room 709, block A, Hua Ting Century Park, Chen Jialin 9, eight Li Zhuang, Chaoyang District, Beijing. Patentee before: Meilianqioa Sci. & Tech. Development Co., Ltd., Beijing |