CN211145323U - Full-automatic gearbox piston - Google Patents
Full-automatic gearbox piston Download PDFInfo
- Publication number
- CN211145323U CN211145323U CN201922084296.0U CN201922084296U CN211145323U CN 211145323 U CN211145323 U CN 211145323U CN 201922084296 U CN201922084296 U CN 201922084296U CN 211145323 U CN211145323 U CN 211145323U
- Authority
- CN
- China
- Prior art keywords
- steel sheet
- piston
- piston body
- annular steel
- positioning
- 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 gearbox technical field specifically is a full-automatic gearbox piston, piston body and hardness including the powder metallurgy fashioned are greater than the annular steel sheet of piston body, the last terminal surface that has the rotor laminating with thrust bearing in the gearbox of piston body, the annular steel sheet can dismantle connect in on the terminal surface. The utility model has simple structure and reasonable layout; because the annular steel sheet can be dismantled connect in on the terminal surface, work as the annular steel sheet takes place wearing and tearing or damages the back, only need change alone the annular steel sheet can, need not whole the piston body is changed, greatly reduced its cost of maintaining.
Description
Technical Field
The utility model relates to a gearbox technical field specifically is a full-automatic gearbox piston.
Background
In automotive transmissions, the end faces of the pistons are often in sliding friction engagement with thrust bearing rollers in the transmission. The existing piston is generally formed by powder metallurgy, and a product formed by the powder metallurgy generally has more pores, so that the density of the piston is low, and therefore, in order to prolong the service life of the piston when the end face of the piston is in sliding friction fit with a bearing roller, the piston needs to perform subsequent work such as rolling treatment, local heat treatment, machining, shaping and the like on the end face of the piston after the piston is formed by the powder metallurgy, so that the process is complex, the cost is high, and the defects of high reject ratio and the like caused by poor products are easy to appear.
In order to solve the above problems, the prior art discloses a transmission piston (with an authorized bulletin number of CN207018500U), which includes a piston body formed by powder metallurgy, wherein the piston body has an end surface attached to a rotor of a thrust bearing in a transmission, an annular steel sheet is fixedly connected to the end surface, and the hardness of the annular steel sheet is greater than that of the piston body. Although the annular steel sheet is fixedly connected to the end face, the problem can be solved, in the using process, the whole piston body needs to be replaced along with the abrasion or damage of the annular steel sheet, and therefore the maintenance and replacement cost is greatly increased. To this end, we propose a fully automatic gearbox piston.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a fully automatic transmission piston to solve the above-mentioned deficiencies in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a full-automatic gearbox piston, includes that powder metallurgy fashioned piston body and hardness are greater than the annular steel sheet of piston body, the last terminal surface that has the rotor laminating with thrust bearing in the gearbox of piston body, annular steel sheet can dismantle connect in on the terminal surface.
The beneficial effects of the utility model reside in that: the utility model has simple structure and reasonable layout; because the annular steel sheet can be dismantled connect in on the terminal surface, work as the annular steel sheet takes place wearing and tearing or damages the back, only need change alone the annular steel sheet can, need not whole the piston body is changed, greatly reduced its cost of maintaining.
Preferably, the annular steel sheet is detachably connected to the end face, namely a positioning hole is recessed in the end face, a positioning column integrally protrudes from the surface of the annular steel sheet close to the end face, and the positioning column can be in limit matching with the positioning hole. The advantages are that: the annular steel sheet is detachably matched with the end face through the matching between the positioning column and the positioning hole; in addition, when the annular steel sheet assembles back on the terminal surface, because spacing between reference column and the location can prevent the annular steel sheet is relative piston body takes place relative rotation, thereby has avoided the annular steel sheet with take place relative slip between the terminal surface, and then avoid to the terminal surface causes wearing and tearing.
Preferably, the shape of the positioning hole is a circular structure. The advantages are that: when taking place sliding friction fit between the thrust bearing roller in annular steel sheet and the gearbox, the reference column can be right the inside wall of locating hole produces thrust, then works as when reference column and locating hole are the circle column structure, at this moment, outside torus on the reference column can be used in on the annular inside wall of locating hole, can avoid because of there is the edges and corners structure on the reference column and aggravate the wearing and tearing of the inside wall of locating hole, thereby the extension the life of piston body.
Preferably, the positioning hole is in an elliptical structure, and the major axis of the ellipse is arranged along the radial direction of the piston body. The advantages are that: the abrasion to the inner side wall of the positioning hole due to the fact that the corner structure is arranged on the positioning column is avoided, and therefore the service life of the piston body is prolonged.
Preferably, the number of the positioning columns and the positioning holes is four or six. The advantages are that: when the number of the positioning columns and the positioning holes is too small, the connecting parts between the positioning columns and the fantasy steel sheets are easy to break or deform; when the number of the positioning columns and the positioning holes is too large, the cost is high and the processing difficulty is increased.
Drawings
Fig. 1 is a perspective structural view of an embodiment of the present invention;
fig. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
fig. 4 is a front view of a piston body according to another embodiment of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present embodiments more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows: referring to fig. 1 to 3, in an embodiment of the present invention, a full-automatic transmission piston includes a piston body 1 formed by powder metallurgy and an annular rigid piece 2 having a hardness greater than that of the piston body 1, the piston body 1 has a terminal surface 11 attached to a rotor of a thrust bearing in a transmission, and the annular rigid piece 2 is detachably connected to the terminal surface 11.
In an embodiment, the annular rigid plate 2 is detachably connected to the end surface 11, that is, a positioning hole 12 is recessed in the end surface 11, a positioning column 21 is integrally protruded on the surface of the annular rigid plate 2 close to the end surface 11, and the positioning column 21 can be in limit matching with the positioning hole 12. The advantages are that: the detachable matching between the annular rigid sheet 2 and the end surface 11 is realized through the matching between the positioning column 21 and the positioning hole 12; in addition, after the annular rigid piece 2 is assembled on the end surface 11, due to the limiting effect between the positioning column 21 and the positioning, the annular rigid piece 2 is prevented from rotating relative to the piston body 1, so that relative sliding between the annular rigid piece 2 and the end surface 11 is avoided, and further abrasion to the end surface 11 is avoided.
In an embodiment, the positioning hole 12 is in a circular structure. The advantages are that: when taking place sliding friction fit between the just piece 2 of annular and the thrust bearing roller in the gearbox, reference column 21 can be right the inside wall of locating hole 12 produces thrust, then works as when reference column 21 and locating hole 12 are the circular structure, at this moment, the outside torus on the reference column 21 can be used in on the annular inside wall of locating hole 12, can avoid because of there is the edges and corners structure on the reference column 21 and aggravate the wearing and tearing of the inside wall of locating hole 12, thereby the extension piston body 1's life.
In the embodiment, the number of the positioning columns 21 and the positioning holes 12 is four or six. The advantages are that: when the number of the positioning columns 21 and the positioning holes 12 is too small, the connecting parts between the positioning columns 21 and the fantasy steel sheets are easy to break or deform; when the number of the positioning columns 21 and the positioning holes 12 is too large, the cost is high and the processing difficulty is increased.
Example two: referring to fig. 4, the positioning hole 12 has an elliptical shape, and the major axis of the ellipse is arranged along the radial direction of the piston body 1, and the rest of the structure is the same as that of the first embodiment; because the surface of the annular rigid sheet 2, which is far away from the end surface 11, has sliding friction with a thrust bearing roller, the positioning column 21 and the positioning hole 12 have a tendency of relative movement, so that the outer side wall of the positioning column 21 generates thrust on the inner side wall of the positioning hole 12, the thrust is in the direction along the tangential line 100 of the piston body 1, and when the positioning hole 12 has an elliptical structure and the major axis of the ellipse is arranged along the radial direction of the piston body 1, the thrust applied to the inner side wall of the positioning hole 12 by the positioning column 21 is uniformly dispersed, so that the degree of abrasion on the positioning hole 12 is reduced, and the service life of the piston body 1 is further prolonged.
The working principle is as follows: during assembly, the positioning column 21 on the annular rigid sheet 2 is only required to be aligned to the positioning hole 12 on the end face 11, and then the annular rigid sheet 2 is buckled and pressed towards the end face 11, and the positioning column 21 and the positioning hole 12 are in limit fit, so that the annular rigid sheet 2 cannot rotate relative to the piston body 1 when sliding friction occurs between the annular rigid sheet 2 and a thrust bearing roller, and therefore abrasion of the end face 11 due to relative rotation between the annular rigid sheet 2 and the piston body 1 is avoided, and the service life of the piston body 1 is prolonged. When the annular rigid piece 2 needs to be replaced due to abrasion or damage, only the annular rigid piece 2 needs to be taken out and replaced independently, and the annular rigid piece 2 does not need to be replaced, so that the maintenance cost of the piston body 1 is greatly reduced.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a full-automatic gearbox piston, includes that powder metallurgy fashioned piston body (1) and hardness are greater than annular steel sheet (2) of piston body (1), have terminal surface (11) with thrust bearing's rotor laminating in the gearbox on piston body (1), its characterized in that, annular steel sheet (2) can dismantle connect in on terminal surface (11).
2. The full-automatic gearbox piston as recited in claim 1, wherein said annular steel sheet (2) is detachably connected to said end surface (11) and is characterized in that a positioning hole (12) is recessed in said end surface (11), a positioning post (21) is integrally protruded on the surface of said annular steel sheet (2) close to said end surface (11), and said positioning post (21) can be matched in said positioning hole (12) in a limiting manner.
3. A fully automatic gearbox piston according to claim 2, characterised in that said positioning hole (12) is shaped as a circular structure.
4. The fully automatic gearbox piston according to claim 2, characterized in that the positioning hole (12) is in the shape of an oval structure, and the major axis of the oval is arranged in the radial direction of the piston body (1).
5. The fully automatic gearbox piston as claimed in any one of claims 2 to 4, characterized in that the number of the positioning posts (21) and the positioning holes (12) is four or six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922084296.0U CN211145323U (en) | 2019-11-27 | 2019-11-27 | Full-automatic gearbox piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922084296.0U CN211145323U (en) | 2019-11-27 | 2019-11-27 | Full-automatic gearbox piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211145323U true CN211145323U (en) | 2020-07-31 |
Family
ID=71775894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922084296.0U Active CN211145323U (en) | 2019-11-27 | 2019-11-27 | Full-automatic gearbox piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211145323U (en) |
-
2019
- 2019-11-27 CN CN201922084296.0U patent/CN211145323U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211145323U (en) | Full-automatic gearbox piston | |
| CN107387730B (en) | Herringbone gear with combined structure and processing method thereof | |
| CN210936454U (en) | Split type roll structure convenient to equipment | |
| CN207771219U (en) | A kind of breast roll dismounting tooling | |
| CN207308685U (en) | Eccentric roller type plate uncoiling blanking bears against device | |
| CN210757489U (en) | Cold rolling backing roll distance cover dismounting device | |
| CN217513651U (en) | Grinding tool clamp for outer diameter of backing bearing outer ring for rolling mill | |
| CN215293248U (en) | Cam bearing | |
| CN207026215U (en) | A kind of rolling fore shaft frock of hydraulic mechanism guide ring | |
| CN215281788U (en) | Tool piece for dismounting bearing seat on shaft | |
| CN212527331U (en) | Nylon fiber round brush | |
| CN210510221U (en) | Bearing retainer ring limit structure | |
| CN208268109U (en) | It is cast with the peripheral pump of stainless steel pressing | |
| CN213176465U (en) | Lengthened heavy-load cylindrical roller bearing | |
| CN205701858U (en) | The backing roll in oil system is squeezed in a kind of multi-roll mill gateway | |
| CN207606457U (en) | A kind of H profile steel group founds the niproll of machine | |
| CN209781461U (en) | Cylindrical roller bearing | |
| CN211852503U (en) | Split double-row conical combined bearing with aligning performance | |
| CN103401344A (en) | Submersible motor with easily disassembled angular contact ball bearing | |
| CN208074043U (en) | A kind of out star wheel roller clutch on fluid torque-converter | |
| CN214661578U (en) | Bearing convenient to dismouting | |
| CN216851454U (en) | Improved stator tooth pressing ring | |
| CN203784119U (en) | Roll ball type universal coupling provided with sliding blocks | |
| CN211117170U (en) | Rolling bearing | |
| CN201496420U (en) | Integral shaft type constant velocity universal coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |