CN202579911U - Timing idle gear - Google Patents
Timing idle gear Download PDFInfo
- Publication number
- CN202579911U CN202579911U CN 201220155830 CN201220155830U CN202579911U CN 202579911 U CN202579911 U CN 202579911U CN 201220155830 CN201220155830 CN 201220155830 CN 201220155830 U CN201220155830 U CN 201220155830U CN 202579911 U CN202579911 U CN 202579911U
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- China
- Prior art keywords
- tooth
- gear
- angle
- idle gear
- percent
- 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 - Fee Related
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Abstract
The utility model relates to a gear, in particular to a timing idle gear mounted on an automobile engine. The timing idle gear comprises a gear body with a gear ring, wherein a mounting through hole is formed in the middle of the gear body; mark teeth are formed at the periphery of the gear body; the mark teeth comprise a first tooth positioned on the outer circumference of the gear body, a second tooth positioned on one side of the first tooth and a third tooth positioned on the other side of the first tooth; the first tooth and the second tooth form an angle alpha; the first tooth and the third tooth form an angle beta; the angle alpha is between 135 and 145 degrees; and the angle beta is between 65 and 75 degrees. The timing idle gear has high precision, low noise, stable meshing, long service life and light weight, adopts precision forging technology, increases the production efficiency by 70 percent, and the material utilization ratio by 25 percent, reduces the comprehensive cost by 20 percent, improves the cost greatly, is energy-saving and environment-friendly, and facilitates the development of the gear industry.
Description
Technical field
The utility model relates to a kind of gear, is specifically related to a kind of idle gear in correct time that is installed on the motor car engine.
Background technique
Along with China's automobile sales volume constantly rises, reached 915.60 ten thousand, 932.52 ten thousand with regard to China's automobile production and marketing first half of the year in 2011, increase by 2.48% and 3.35% on year-on-year basis respectively.Correct time, idle gear was as the important component part of motor car engine, and huge commercial opportunities are also being contained in its market thereupon.Along with the development of producing, the stationarity of gear operation is low, and noise of transmission is big, and transmission efficiency is low, and working life is short.
Summary of the invention
To above-mentioned technical problem, the utility model provide a kind of correct time idle gear, it is simple in structure, stable drive, rotational noise is little, transmission efficiency is high, long service life.
The technological scheme that realizes the utility model is following:
Correct time idle gear, it comprises the gear mass with gear ring, gear mass middle part offers installation through holes; Said gear mass be circumferentially with notch; This notch comprises first tooth, second tooth that is positioned at first tooth, one side that is positioned on the gear mass excircle, the 3rd tooth that is positioned at the first tooth opposite side, has angle [alpha] between first tooth and second tooth, has angle beta between first tooth and the 3rd tooth; Said angle [alpha] is at 135 °---and 145 °, angle beta is at 65 °---and 75 °.
The tooth-shape angle of said notch is 20 °.
The spiral angle of graduated circle of said notch is 20 °.
Said angle [alpha] is 139 °, and angle beta is 71 °.
Be provided with annular groove on the both ends of the surface of said gear mass, alleviate the weight of gear.
The precision of the utility model is high, noise is low, engagement is steady, the life-span is long, in light weight, and the employing precision forging is technological, manufacturing efficiency raising 70%; Overall cost reduces by 20%; Stock utilization improves 25%, has well improved cost and energy-conserving and environment-protective, has promoted the development of gear industry.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the sectional view of the utility model;
Among the figure, 1 is gear ring, and 2 is gear mass, and 3 is installation through holes, and 4 is annular groove, and 5 is first tooth, and 6 is second tooth, and 7 is the 3rd tooth.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further specified.
Referring to Fig. 1,2, correct time idle gear, it comprises the gear mass 2 with gear ring 1; The gear mass middle part offers installation through holes 3; Be provided with annular groove 4 on the both ends of the surface of gear mass, gear mass be circumferentially with notch, this notch comprises first tooth 5 that is positioned on the gear mass excircle, be positioned at first tooth, 5 one sides second tooth 6, be positioned at the 3rd tooth 7 of first tooth, 5 opposite sides; Has angle [alpha] between first tooth 5 and second tooth 6; Have angle beta between first tooth and the 3rd tooth, angle [alpha] is at 135 °---and 145 °, angle beta is at 65 °---and 75 °.The tooth-shape angle of notch is 20 °, and the spiral angle of graduated circle of notch is 20 °.The quantity of tooth is 53 in the gear ring 1.
During practical implementation; Angle [alpha] can be 135 °, 136 °, 137 °, 138 °, 139,140 °, 141 °, 142 °, 143 °, 144 °, 145 °, and angle beta can be 65 °, 66 °, 67 °, 68 °, 69 °, 70 °, 71 °, 72 °, 73 °, 74 °, 75 °.
Claims (5)
- Correct time idle gear, it comprises the gear mass with gear ring, gear mass middle part offers installation through holes; It is characterized in that: said gear mass be circumferentially with notch; This notch comprises first tooth, second tooth that is positioned at first tooth, one side that is positioned on the gear mass excircle, the 3rd tooth that is positioned at the first tooth opposite side, has angle [alpha] between first tooth and second tooth, has angle beta between first tooth and the 3rd tooth; Said angle [alpha] is at 135 °---and 145 °, angle beta is at 65 °---and 75 °.
- 2. correct time according to claim 1 idle gear, it is characterized in that: the tooth-shape angle of said notch is 20 °.
- 3. correct time according to claim 1 idle gear, it is characterized in that: the spiral angle of graduated circle of said notch is 20 °.
- 4. correct time according to claim 1 idle gear, it is characterized in that: said angle [alpha] is 139 °, angle beta is 71 °.
- 5. correct time according to claim 1, idle gear is characterized in that: be provided with annular groove on the both ends of the surface of said gear mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155830 CN202579911U (en) | 2012-04-13 | 2012-04-13 | Timing idle gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155830 CN202579911U (en) | 2012-04-13 | 2012-04-13 | Timing idle gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579911U true CN202579911U (en) | 2012-12-05 |
Family
ID=47249325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220155830 Expired - Fee Related CN202579911U (en) | 2012-04-13 | 2012-04-13 | Timing idle gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579911U (en) |
-
2012
- 2012-04-13 CN CN 201220155830 patent/CN202579911U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150413 |
|
| EXPY | Termination of patent right or utility model |