CN215567775U - Powder metallurgy VVT engine belt pulley - Google Patents
Powder metallurgy VVT engine belt pulley Download PDFInfo
- Publication number
- CN215567775U CN215567775U CN202122199065.1U CN202122199065U CN215567775U CN 215567775 U CN215567775 U CN 215567775U CN 202122199065 U CN202122199065 U CN 202122199065U CN 215567775 U CN215567775 U CN 215567775U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- powder metallurgy
- reinforcing ribs
- gear ring
- vvt engine
- 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
Images
Abstract
The utility model relates to a powder metallurgy VVT (variable valve timing) engine belt pulley which comprises a bottom plate and a gear ring, wherein the bottom plate is provided with a shaft hole, the gear ring is fixed with the outer side of the bottom plate, and a threaded hole is formed in the bottom plate; the reinforcing rib structure is characterized in that a plurality of reinforcing ribs are arranged at the joint of the inner side surface of the gear ring and the bottom plate, the plurality of reinforcing ribs are uniformly distributed along the circumferential direction of the joint, the reinforcing ribs are arc-shaped, and the arc angle of each reinforcing rib is 5-36 degrees. The reinforcing ribs are arranged at the connecting positions of the bottom plate and the gear ring, the structural strength of the connecting positions of the bottom plate and the gear ring is greatly enhanced through the structural form of the reinforcing ribs, and the service life of a product is further prolonged.
Description
Technical Field
The utility model relates to the technical field of powder metallurgy belt pulley production, in particular to a powder metallurgy VVT (variable valve timing) engine belt pulley.
Background
Powder metallurgy is a processing method for making various products by pressing and sintering metal powder as a raw material. The Variable Valve Timing (VVT) technology is a technology widely applied to modern automobiles, the power performance and the economy of an engine can be improved by improving the intake charge and increasing the charge coefficient so as to improve the torque and the power of the engine, and a belt pulley is an important transmission part in the VVT engine. At present, the VVT engine belt pulley produced by powder metallurgy has the advantages of rapid forming, high material utilization rate and the like, so the VVT engine belt pulley is widely applied.
Traditional VVT engine belt pulley structure includes the bottom plate and connects the ring gear in the bottom plate outside, and bottom plate and ring gear pass through powder metallurgy shaping, because the junction of bottom plate and ring gear is the right angle and connects the face, does not have reinforced connection structure, makes the junction structural strength of bottom plate and ring gear low, influences VVT engine belt pulley's whole life.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a powder metallurgy VVT (variable valve timing) engine pulley.
The utility model is realized by the following technical scheme, and provides a powder metallurgy VVT engine belt pulley which comprises a bottom plate and a gear ring, wherein the bottom plate is provided with a shaft hole, the gear ring is fixed with the outer side of the bottom plate, and the bottom plate is provided with a threaded hole; the reinforcing rib structure is characterized in that a plurality of reinforcing ribs are arranged at the joint of the inner side surface of the gear ring and the bottom plate, the plurality of reinforcing ribs are uniformly distributed along the circumferential direction of the joint, the reinforcing ribs are arc-shaped, and the arc angle of each reinforcing rib is 5-36 degrees.
Preferably, the number of the reinforcing ribs is 5, and the arc angle of each reinforcing rib is 36 degrees. The strengthening rib and the setting of strengthening rib circular arc angle of this quantity for set up the strengthening rib and not set up the part of strengthening rib and account for half of ring gear internal perimeter respectively, it is better to the enhancement effect of junction, make the junction connect more stably, strengthen the joint strength of junction.
Preferably, the longitudinal section of the reinforcing rib is a right-angle sector. The reinforcing ribs with the right-angle fan-shaped sections can better enhance the strength of the joints.
Preferably, the number of the reinforcing ribs is equal to that of the threaded holes, and the reinforcing ribs and the threaded holes are alternately distributed at intervals. The screw hole is as the connection atress position in later stage, and alternate interval distribution's mode makes the both sides of every screw hole all be equipped with the strengthening rib, and the strengthening rib carries out intensity enhancement to connecting position both sides, improves joint strength.
Preferably, the threaded holes are distributed uniformly along the circumferential direction of the bottom plate.
Preferably, the number of the threaded holes is 5.
Preferably, each threaded bore surface is provided with a ring of bosses. The depth of the thread can be increased by arranging the lug boss, the connection strength of the thread is improved, and the service life of a product is prolonged.
Preferably, the height of the boss is 1-5 mm.
Preferably, the bottom plate is provided with positioning holes.
Preferably, the base plate, the ring gear and the reinforcing ribs are integrally formed. The processing is convenient, and secondary processing is not needed.
The utility model has the beneficial effects that:
the utility model has simple structure, the joint of the bottom plate and the gear ring is provided with the reinforcing rib, the structural strength of the joint of the bottom plate and the gear ring is greatly enhanced by the structural form of the reinforcing rib, the service life of the product is further prolonged, and the service life of the product is prolonged to 2-2.5 times of the original service life.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is a schematic cross-sectional view of a reinforcing bar according to the present invention;
shown in the figure:
1. shaft hole, 2, bottom plate, 3, ring gear, 4, screw hole, 5, strengthening rib, 6, boss, 7, locating hole.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1 and 2, the utility model comprises a bottom plate 2 provided with a shaft hole 1, a gear ring 3 fixed with the outer side of the bottom plate 2, and a threaded hole 4 arranged on the bottom plate 2; the connecting part of the inner side surfaces of the bottom plate 2 and the gear ring 3 is provided with a plurality of reinforcing ribs 5, the plurality of reinforcing ribs 5 are uniformly distributed along the circumferential direction of the connecting part, the reinforcing ribs 5 are arc-shaped, and the arc angle of each reinforcing rib 5 is 5-36 degrees.
In this embodiment, the number of the reinforcing ribs 5 is 5, and the arc angle of each reinforcing rib 5 is 36 °. The setting of the 5 and 5 circular arc angles of strengthening rib of this quantity, it is better to the enhancement effect of junction, makes the junction connect more stably, strengthens the joint strength of junction.
As shown in fig. 3, the longitudinal section of the reinforcing rib 5 is a right-angle sector. The reinforcing ribs 5 with the right-angle fan-shaped cross sections can better enhance the strength of the joints.
The reinforcing ribs 5 are equal to the threaded holes 4 in number, the reinforcing ribs 5 are distributed with the threaded holes 4 alternately at intervals, the threaded holes 4 are uniformly distributed along the circumferential direction of the base plate 2, and the number of the threaded holes 4 is 5.
The surface of each threaded hole 4 is provided with a circle of boss 6, and the height of each boss 6 is 1-5 mm. The boss 6 can increase the strength of threaded connection, and the service life of the product is prolonged.
The bottom plate 2 is provided with positioning holes 7. The base plate 2, the gear ring 3 and the reinforcing ribs 5 are integrally formed.
The utility model has simple structure, the reinforcing rib 5 is arranged at the joint of the base plate 2 and the gear ring 3, the structural strength of the joint of the base plate 2 and the gear ring 3 is greatly enhanced by the structural form of the reinforcing rib 5, the service life of the product is further prolonged, and the service life of the product is prolonged to 2-2.5 times of the original service life.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (9)
1. A powder metallurgy VVT engine belt pulley comprises a bottom plate provided with a shaft hole, and a gear ring fixed with the outer side of the bottom plate, wherein a threaded hole is formed in the bottom plate; the method is characterized in that: the reinforcing rib structure is characterized in that a plurality of reinforcing ribs are arranged at the joint of the inner side surface of the gear ring and the bottom plate, the plurality of reinforcing ribs are uniformly distributed along the circumferential direction of the joint, the reinforcing ribs are arc-shaped, and the arc angle of each reinforcing rib is 5-36 degrees.
2. A powder metallurgy VVT engine pulley according to claim 1, characterized in that: the reinforcing ribs are 5, and the arc angle of each reinforcing rib is 36 degrees.
3. A powder metallurgy VVT engine pulley according to claim 1, characterized in that: the longitudinal section of the reinforcing rib is in a right-angle sector shape.
4. A powder metallurgy VVT engine pulley according to claim 1, characterized in that: the reinforcing ribs are equal to the threaded holes in number and are alternately distributed at intervals.
5. A powder metallurgy VVT engine pulley according to claim 1, characterized in that: the threaded holes are distributed uniformly along the circumferential direction of the bottom plate.
6. A powder metallurgy VVT engine pulley according to claim 5, wherein: the number of the threaded holes is 5.
7. A powder metallurgy VVT engine pulley according to claim 5, wherein: and the surface of each threaded hole is provided with a circle of boss.
8. A powder metallurgy VVT engine pulley according to claim 7, wherein: the height of the boss is 1-5 mm.
9. A powder metallurgy VVT engine pulley according to claim 1, characterized in that: the bottom plate is provided with a positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199065.1U CN215567775U (en) | 2021-09-13 | 2021-09-13 | Powder metallurgy VVT engine belt pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199065.1U CN215567775U (en) | 2021-09-13 | 2021-09-13 | Powder metallurgy VVT engine belt pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567775U true CN215567775U (en) | 2022-01-18 |
Family
ID=79849826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122199065.1U Active CN215567775U (en) | 2021-09-13 | 2021-09-13 | Powder metallurgy VVT engine belt pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567775U (en) |
-
2021
- 2021-09-13 CN CN202122199065.1U patent/CN215567775U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215567775U (en) | Powder metallurgy VVT engine belt pulley | |
| CN204691843U (en) | Changeable air valve powder metallurgy VVT stator | |
| CN103967549A (en) | One-cylinder multiple-cam combined type cam shaft | |
| CN205534124U (en) | Tensioning wheel | |
| CN103352912B (en) | V-six engine crankshaft forging and forging method thereof | |
| CN202055879U (en) | Timing belt wheel of camshaft | |
| CN201916455U (en) | Powder metallurgy chain wheel for sedan | |
| CN209838928U (en) | V-cylinder integral crankshaft assembly | |
| CN206943378U (en) | A kind of plastics and metal composite drive | |
| CN112319125A (en) | Wheel and manufacturing method thereof | |
| CN209855868U (en) | Gas distribution system of gasoline engine | |
| CN206439235U (en) | Exempt from the wind wheel of cooking-fume exhauster axle sleeve of rivet installation | |
| CN211343151U (en) | Cylinder body of two-stroke internal combustion engine | |
| CN206277098U (en) | A kind of fuel injector punching type fixed plate and its assembly tooling | |
| CN201747492U (en) | Vertical intake manifold structure | |
| CN201250850Y (en) | Cold-extrusion universal joint crossing shaft | |
| CN115329608B (en) | Piston design method and piston | |
| CN209083852U (en) | A kind of universal joint lightweight clutch can for new-energy automobile | |
| CN202611899U (en) | Reinforced cylinder sleeve for motorcycle engine | |
| CN213705054U (en) | Wheel of vehicle | |
| CN215949609U (en) | Diesel engine powder metallurgy camshaft structure | |
| CN202503181U (en) | Plane groove-type integrally cold forged commutator | |
| CN212928304U (en) | Novel metal impeller | |
| CN212704353U (en) | Powder metallurgy forming die capable of reducing local density of stator | |
| CN212182052U (en) | Subassembly is firmly stabilized to insulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |