CN215861670U - Powder metallurgy internal gear structure - Google Patents
Powder metallurgy internal gear structure Download PDFInfo
- Publication number
- CN215861670U CN215861670U CN202121894236.6U CN202121894236U CN215861670U CN 215861670 U CN215861670 U CN 215861670U CN 202121894236 U CN202121894236 U CN 202121894236U CN 215861670 U CN215861670 U CN 215861670U
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- CN
- China
- Prior art keywords
- shell
- internal gear
- oil
- powder metallurgy
- gear teeth
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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
Links
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 35
- 239000010687 lubricating oil Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a powder metallurgy internal gear structure, which belongs to the technical field of internal gear structures, and adopts the technical scheme that the powder metallurgy internal gear structure comprises a shell, wherein an inner ring and inner gear teeth can be limited and fixed through the shell, lubricating oil is added into an oil supply groove, the lubricating oil is guided into an oil outlet hole through a plurality of oil guide grooves in a cavity, so that the oil outlet hole can convey the lubricating oil to the outer wall of the inner gear teeth, the meshing connection part of the inner gear teeth can be lubricated, the friction coefficient of the inner gear teeth and the connection part of other gears in the inner gear teeth is reduced, the service life of the inner gear teeth is prolonged, the effect of smoother rotation of the internal gear is ensured, the contact area between the upper end surfaces of the shell and the inner ring and other parts can be increased through four convex blocks, the support strength of the shell is enhanced, the support shafts are vertically distributed in the shell, and when the upper end surfaces of the shell and other parts are installed, the axial pressure-bearing capacity of the shell can be improved, thereby improving the axial bearing force of the internal gear.
Description
Technical Field
The utility model relates to the technical field of internal gear structures, in particular to a powder metallurgy internal gear structure.
Background
The powder metallurgy gear is a commonly used powder metallurgy part in various automobile engines, can completely meet the requirement of dimensional precision, particularly tooth profile precision, through one-step forming and finishing processes without other post-treatment processes, and therefore, compared with the traditional machining method for manufacturing, the powder metallurgy gear greatly reduces material investment and manufacturing and is a typical product reflecting the characteristics of powder metallurgy.
However, when the existing powder metallurgy internal gear structure is used, the lubricating effect on the meshing and connecting part of the internal gear is poor, the meshing and connecting part of the internal gear is easy to wear, and the strength of the internal gear is poor, so that the service life of the gear is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problems and provides a powder metallurgy inner gear structure to solve the problems.
The utility model is realized in such a way that an internal gear structure for powder metallurgy comprises a shell, wherein an inner ring is arranged in the shell, a plurality of inner gear teeth which are uniformly distributed are arranged on the inner wall of the inner ring, an oil supply groove is arranged between the shell and the inner ring, the inner wall of the oil supply groove is fixedly connected with a cavity, the inner wall of the cavity is fixedly connected with the outer wall of the inner ring, a plurality of oil guide grooves which are communicated with the oil supply groove and are annularly distributed are arranged in the cavity, four lugs which are annularly distributed are fixedly connected with the outer wall of the shell, a plurality of supporting shafts which are uniformly distributed are arranged in the shell, and the plurality of supporting shafts and the four lugs are alternately distributed.
In order to enable lubricating oil to be in smooth contact with the inner gear teeth, the powder metallurgy inner gear structure is preferable, oil outlet holes are formed in the outer walls of the inner gear teeth in a penetrating mode, and the other ends of the oil outlet holes are communicated with the oil guide grooves.
In order to axially support the outer shell, the powder metallurgy internal gear structure of the utility model is preferable, and a plurality of support shafts are axially distributed.
In order to enable the lubricating oil in the oil guide grooves to smoothly flow to the oil outlet hole, the powder metallurgy internal gear structure is preferable, the oil guide grooves are obliquely arranged, and one end close to the cavity is higher than one end close to the oil outlet hole.
In order to avoid leakage of lubricating oil from the lower end of the oil supply groove, the powder metallurgy internal gear structure of the present invention is preferably configured such that each of the four protrusions has a trapezoidal shape, and the oil supply groove is in a lower end sealed state.
Compared with the prior art, the utility model has the beneficial effects that:
1. the powder metallurgy internal gear structure can limit and fix the inner ring and the inner gear teeth through the shell, add lubricating oil into the oil supply groove, the lubricating oil is guided into the oil outlet hole through the plurality of oil guide grooves in the cavity, so that the oil outlet hole can convey the lubricating oil to the outer wall of the inner gear teeth, thereby lubricating the meshing connection part of the inner gear teeth, reducing the friction coefficient of the inner gear teeth and the connection part of other gears inside the inner gear teeth, prolonging the service life of the inner gear teeth, ensuring the effect of smoother rotation of the inner gear, increasing the contact area of the upper end surfaces of the shell and the inner ring and other parts through the four lugs, thereby strengthening the supporting strength, the supporting shafts are vertically arranged and distributed in the shell, when the upper end surface of the supporting shafts is installed with other parts, the axial bearing capacity of the shell can be improved, so that the axial bearing capacity of the internal gear is improved, and the service life of the internal gear is prolonged;
to sum up, this kind of powder metallurgy internal gear structure has realized the lubricated effect in meshing connection position of internal teeth of a cogwheel through mutually supporting of oil feed groove, oil guide groove, oil outlet and lug and back shaft, can strengthen the effect of the axial strength of gear simultaneously to the life of internal gear has been improved.
Drawings
FIG. 1 is an overall structural view of an internal gear structure in powder metallurgy according to the present invention;
fig. 2 is a top view of a powder metallurgy internal gear structure of the present invention.
In the figure, 1, a housing; 2. an inner ring; 201. inner gear teeth; 202. an oil outlet hole; 3. an oil supply tank; 301. a cavity; 302. an oil guide groove; 4. a bump; 401. and supporting the shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-2, in the embodiment, the outer shell 1 can limit and fix the inner ring 2 and the inner gear teeth 201, the lubricating oil is added into the oil supply groove 3, the lubricating oil is guided into the oil outlet hole 202 through the oil guide grooves 302 in the cavity 301, so that the oil outlet hole 202 can convey the lubricating oil to the outer wall of the inner gear teeth 201, and further, the meshing connection portion of the inner gear teeth 201 can be lubricated, the friction coefficient of the connection portion of the inner gear teeth 201 and other gears inside the inner gear teeth 201 is reduced, the service life of the inner gear teeth 201 is prolonged, the effect of smoother rotation of the inner gear is ensured, the contact area between the upper end surfaces of the outer shell 1 and the inner ring 2 and other parts can be increased through the four bumps 4, so as to enhance the supporting strength thereof, the supporting shafts 401 are vertically arranged and distributed inside the outer shell 1, and when the upper end surfaces thereof are installed with other parts, the axial pressure-bearing capacity of the outer shell 1 can be improved, thereby improving the axial bearing force of the internal gear and prolonging the service life of the internal gear.
The working principle is as follows: the inner ring 2 and the inner gear teeth 201 can be limited and fixed through the shell 1, lubricating oil is added into the oil supply groove 3, the lubricating oil is guided into the oil outlet hole 202 through the plurality of oil guide grooves 302 in the cavity 301, the oil outlet hole 202 is promoted to convey the lubricating oil to the outer wall of the inner gear teeth 201, then the meshing connection part of the inner gear teeth 201 can be lubricated, the friction coefficient of the inner gear teeth 201 and other gear connection parts inside the inner gear teeth 201 is reduced, the service life of the inner gear teeth 201 is prolonged, the effect of smoother rotation of an inner gear is guaranteed, the contact area between the upper end faces of the shell 1 and the inner ring 2 and other parts can be increased through the four bumps 4, the supporting strength is enhanced, the supporting shafts 401 are vertically distributed in the shell 1, when the upper end faces of the supporting shafts are installed with other parts, the axial bearing capacity of the shell 1 can be improved, and the axial bearing capacity of the inner gear is improved, thereby increasing the service life of the internal gear.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A powder metallurgy internal gear structure, includes shell (1), its characterized in that: the inside of shell (1) is provided with inner ring (2), a plurality of evenly distributed's interior teeth of a cogwheel (201) are seted up to the inner wall of inner ring (2), install between shell (1) and inner ring (2) and supply oil groove (3), the inner wall fixedly connected with cavity (301) of supplying oil groove (3), the inner wall of cavity (301) and the outer wall fixed connection of inner ring (2), cavity (301) inside seted up a plurality ofly with supply oil groove (3) intercommunication and be oil groove (302) of leading of annular distribution, the outer wall fixedly connected with of shell (1) four are the lug (4) of annular distribution, the internally mounted of shell (1) has a plurality of evenly distributed's back shaft (401), and is a plurality of back shaft (401) are alternate distribution with four lug (4).
2. The powder metallurgy internal gear structure according to claim 1, wherein: a plurality of the outer wall of interior teeth of a cogwheel (201) has all run through and has seted up oil outlet (202), and is a plurality of the other end of oil outlet (202) all communicates with oil guide groove (302).
3. The powder metallurgy internal gear structure according to claim 1, wherein: the supporting shafts (401) are distributed in the axial direction.
4. The powder metallurgy internal gear structure according to claim 1, wherein: the oil guide grooves (302) are obliquely arranged, and one end close to the cavity (301) is higher than one end close to the oil outlet hole (202).
5. The powder metallurgy internal gear structure according to claim 1, wherein: the four convex blocks (4) are in a trapezoidal shape, and the oil supply groove (3) is in a lower end sealing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121894236.6U CN215861670U (en) | 2021-08-13 | 2021-08-13 | Powder metallurgy internal gear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121894236.6U CN215861670U (en) | 2021-08-13 | 2021-08-13 | Powder metallurgy internal gear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861670U true CN215861670U (en) | 2022-02-18 |
Family
ID=80238706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121894236.6U Expired - Fee Related CN215861670U (en) | 2021-08-13 | 2021-08-13 | Powder metallurgy internal gear structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861670U (en) |
-
2021
- 2021-08-13 CN CN202121894236.6U patent/CN215861670U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |