CN205225357U - Light -duty timing sprocket of VVT engine variable valve - Google Patents
Light -duty timing sprocket of VVT engine variable valve Download PDFInfo
- Publication number
- CN205225357U CN205225357U CN201521092301.8U CN201521092301U CN205225357U CN 205225357 U CN205225357 U CN 205225357U CN 201521092301 U CN201521092301 U CN 201521092301U CN 205225357 U CN205225357 U CN 205225357U
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- China
- Prior art keywords
- circular
- sprocket
- circular groove
- circular recess
- light
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- 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 - Fee Related
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- 239000011159 matrix material Substances 0.000 claims description 15
- 238000004663 powder metallurgy Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 230000004580 weight loss Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 239000013585 weight reducing agent Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Gears, Cams (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model discloses a light -duty timing sprocket of VVT engine variable valve, including circular chain wheel base body and peripheral sprocket, its characterized in that: circular chain wheel base body's front be equipped with the little 4mm of radius of first, the circular recess of second, the radius ratio sprocket tooth root portion of first circular recess, the little 16mm of the first circular recess radius of radius ratio of the circular recess of second, diapire middle part at the circular recess of second is equipped with the locating hole, and the locating hole diameter is 30mm, a week at first circular recess diapire is equipped with 5 screws. This light -duty timing sprocket of VVT engine variable valve, the variable valve timing sprocket who uses with present VVT engine compares, owing to openly be equipped with first circular recess, the circular recess of second at circular chain wheel base body, so realized the weight loss, adopts powder metallurgy suppression, sintering in one whole simultaneously again, the further weight that has alleviateed, the process is few moreover, machining efficiency is high, low in production cost.
Description
Technical field
The utility model relates to a kind of improvement of VVT engine variable-valve timing sprocket, belongs to technical field of automobile, the specifically light-duty timing sprocket of a kind of VVT engine variable-valve.
Background technique
At present in VVT engine operation process, the connection completed between bent axle and camshaft by timing system is driven, and wherein Variable Valve Time sprocket wheel plays an important role in transmission of power.At present, the Variable Valve Time sprocket wheel that VVT motor uses, comprise steel plectane body, sprocket is provided with at the periphery of steel plectane body, the middle part of steel plectane body is provided with positioning hole, within one week, is provided with 5 screws at steel plectane body, is provided with sprocket wheel bearing mounting groove in the front of positioning hole, the reverse side of steel plectane body is provided with location cotter way, as shown in Figure 4.The deficiency of this VVT engine variable-valve timing sprocket is: because the positive and negative of steel plectane body are platen surface, so weight is large.
Summary of the invention
The purpose of this utility model is to provide a kind of light-duty timing sprocket of VVT engine variable-valve that can reduce VVT engine variable-valve timing sprocket weight.
In order to reach above object, the technological scheme that the utility model adopts is: the light-duty timing sprocket of this VVT engine variable-valve, comprise circular chain-wheel matrix, sprocket is provided with at the periphery of circular chain-wheel matrix, it is characterized in that: the front of described circular chain-wheel matrix is provided with the first circular groove, the little 4mm of radius in the radius ratio sprocket tooth root portion of the first circular groove; The second circular groove is provided with, the little 16mm of radius ratio first circular groove radius of the second circular groove in the middle part of the diapire of the first circular groove; In the middle part of the diapire of the second circular groove, be provided with positioning hole, positioning hole diameter is 30mm; Within one week, be provided with 5 screws at the first circular groove diapire, be equipped with conical surface chamfering in the opening's edge of 5 screws, the center line of 5 screws is to the distance of shaft centers of positioning hole from unanimously.
The utility model is also implemented by following measure: the thickness of described circular chain-wheel matrix is 9mm.
The diapire reverse side of the first described circular groove is provided with oil groove, and the distance at center to positioning hole center of oil groove and the center line of screw are to the distance of shaft centers of positioning hole from consistent.
Described circular chain-wheel matrix, sprocket and the first circular groove thereof, the second circular groove, positioning hole, screw, oil groove adopt high-density powder metallurgy compacting, are sintered in an entirety, by adopting high-density powder metallurgy compacting, and can weight reduction further.
Described high-density powder metallurgy, comprises copper powder 1-5%, nickel powder 1.5-3%, molybdenum powder 0.3-0.6%, graphite 0.6-0.8%, plasticizing agent 0.5-1%, and surplus is the mixed powder of iron powder, density>=6.6g/cm
3.
The beneficial effects of the utility model are: the light-duty timing sprocket of this VVT engine variable-valve, compared with the Variable Valve Time sprocket wheel used with current VVT motor, owing to being provided with the first circular groove, the second circular groove at circular chain-wheel front side of matrix, so achieve weight saving, adopt again powder metallurgy pressing simultaneously, be sintered in an entirety, further alleviate weight, and operation is few, work efficiency is high, cost of production is low.
Accompanying drawing explanation
Fig. 1 is structure front of the present utility model schematic top plan view.
Fig. 2 is that structure of the present utility model is along Figure 1A-A cross-sectional schematic.
Fig. 3 is the elevational schematic view of structural drawing 1 of the present utility model.
The Variable Valve Time sprocket wheel cross-sectional schematic that Fig. 4 uses for current VVT motor.
Embodiment
The utility model is made with reference to Fig. 1, Fig. 2, Fig. 3.The light-duty timing sprocket of this VVT engine variable-valve, comprise circular chain-wheel matrix 1, sprocket 2 is provided with at the periphery of circular chain-wheel matrix 1, it is characterized in that: the front of described circular chain-wheel matrix 1 is provided with the little 4mm of radius in the radius ratio sprocket 2 tooth root portion of the first circular groove 3, first circular groove 3; The little 16mm of radius ratio first circular groove 3 radius of the second circular groove 4, second circular groove 4 is provided with in the middle part of the diapire of the first circular groove 3; In the middle part of the diapire of the second circular groove 4, be provided with positioning hole 5, positioning hole 5 diameter is 30mm; Weight saving is realized by the first circular groove 3 and the second circular groove 4; Within one week, be provided with 5 screws 6 at the first circular groove 3 diapire, be equipped with conical surface chamfering in the opening's edge of 5 screws 6, the center line of 5 screws 6 is to the distance of shaft centers of positioning hole 5 from unanimously.
As improvement of the present utility model: the thickness of described circular chain-wheel matrix 1 is 9mm.
The diapire reverse side of the first described circular groove 3 is provided with oil groove 7, and the distance at center to positioning hole 5 center of oil groove 7 and the center line of screw 6 are to the distance of shaft centers of positioning hole 5 from consistent.
Described circular chain-wheel matrix 1, sprocket 2 and the first circular groove 3, second circular groove 4 thereof, positioning hole 5, screw 6, oil groove 7 adopt high-density powder metallurgy to suppress, are sintered in an entirety, by adopting high-density powder metallurgy compacting, can weight reduction further.
Described high-density powder metallurgy, comprises copper powder 1-5%, nickel powder 1.5-3%, molybdenum powder 0.3-0.6%, graphite 0.6-0.8%, plasticizing agent 0.5-1%, and surplus is the mixed powder of iron powder, density>=6.6g/cm
3.
Fig. 4 gives the Variable Valve Time sprocket wheel cross-sectional schematic that current VVT motor uses.With reference to Fig. 4, the Variable Valve Time sprocket wheel that current VVT motor uses, comprise steel plectane body 8, sprocket 9 is provided with at the periphery of steel plectane body 8, the middle part of steel plectane body 8 is provided with positioning hole 10,5 screws 11 within one week, are provided with at steel plectane body 8, sprocket wheel bearing mounting groove 12 is provided with in the front of positioning hole 10, the reverse side of steel plectane body 8 is provided with oil groove 13, as can be seen from Figure 4, the positive and negative of described steel plectane body 8 are platen surface, and the thickness of sprocket 9 and the consistency of thickness of steel plectane body 8, do not have the measure of weight reduction.
Claims (3)
- The light-duty timing sprocket of 1.VVT engine variable-valve, comprise circular chain-wheel matrix (1), sprocket (2) is provided with at the periphery of circular chain-wheel matrix (1), it is characterized in that: the front of described circular chain-wheel matrix (1) is provided with the first circular groove (3), the little 4mm of radius in radius ratio sprocket (2) the tooth root portion of the first circular groove (3); The second circular groove (4) is provided with, the little 16mm of radius ratio first circular groove (3) radius of the second circular groove (4) in the middle part of the diapire of the first circular groove (3); In the middle part of the diapire of the second circular groove (4), be provided with positioning hole (5), positioning hole (5) diameter is 30mm; Within one week, be provided with 5 screws (6) at the first circular groove (3) diapire, be equipped with conical surface chamfering in the opening's edge of 5 screws (6), the center line of 5 screws (6) is to the distance of shaft centers of positioning hole (5) from unanimously.
- 2. the light-duty timing sprocket of VVT engine variable-valve according to claim 1, is characterized in that: the thickness of described circular chain-wheel matrix (1) is 9mm.
- 3. the light-duty timing sprocket of VVT engine variable-valve according to claim 1, it is characterized in that: the diapire reverse side of described the first circular groove (3) is provided with oil groove (7), the distance at center to positioning hole (5) center of oil groove (7) and the center line of screw (6) are to the distance of shaft centers of positioning hole (5) from consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092301.8U CN205225357U (en) | 2015-12-25 | 2015-12-25 | Light -duty timing sprocket of VVT engine variable valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092301.8U CN205225357U (en) | 2015-12-25 | 2015-12-25 | Light -duty timing sprocket of VVT engine variable valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225357U true CN205225357U (en) | 2016-05-11 |
Family
ID=55900431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521092301.8U Expired - Fee Related CN205225357U (en) | 2015-12-25 | 2015-12-25 | Light -duty timing sprocket of VVT engine variable valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225357U (en) |
-
2015
- 2015-12-25 CN CN201521092301.8U patent/CN205225357U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161228 Address after: 271103 Shandong city of Laiwu Province Steel City Xin Xiang Zhenming Street No. 9 Patentee after: LAIWU XINYI SINTERED METAL PRODUCT CO., LTD. Address before: 271103 Shandong Province, Laiwu City Gangcheng District Yan Zhen Laiwu Keli New Material Co Ltd Patentee before: Lv Yuanzhi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20171225 |