CN209444382U - Camshaft - Google Patents
Camshaft Download PDFInfo
- Publication number
- CN209444382U CN209444382U CN201920200974.2U CN201920200974U CN209444382U CN 209444382 U CN209444382 U CN 209444382U CN 201920200974 U CN201920200974 U CN 201920200974U CN 209444382 U CN209444382 U CN 209444382U
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- camshaft
- shaft part
- grade
- radial direction
- oil hole
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Abstract
The utility model discloses a kind of camshafts comprising first grade of shaft part and remaining each shelves shaft part, the diameter of axle of first grade of shaft part are greater than the diameter of remaining each shelves shaft part, and one end of camshaft is arranged in first grade of shaft part, and first grade of shaft part is for installing bearing.The camshaft of the utility model, because its first grade of camshaft journal is relatively large in diameter, remaining each shelves camshaft journal diameter is smaller, that is, meets the requirement of camshaft transmitting torque, and reduces the inertia force in camshaft operational process and components material cost.
Description
Technical field
The utility model is about field of internal combustion engine, especially with regard to a kind of camshaft.
Background technique
Camshaft is great on the influence of the performance of internal combustion engine, and reliability is particularly important.Camshaft is main during the work time
The contact born between the distorting stress and intake and exhaust cam and cam follower that camshaft timing gear passes over is answered
Power.Generally use heat treatment process improve intake and exhaust cam surface abrasion resistance and hardness come reduce contact stress can to camshaft
By the influence of property, still further aspect needs to improve intensity and the support of camshaft to reduce distorting stress to camshaft reliability
Influence.
In order to meet the requirement of camshaft transmitting torque, need to meet on the diameter design of first grade of camshaft journal certain strong
The diameter of degree, the camshaft journal of current remaining each shelves of most of camshafts is equal with the diameter of first grade of camshaft journal or phase
It is poor little, there is the phenomenon that design in design, and increased the quality and inertia force of camshaft, the reliability of camshaft is made
At adverse effect, while also increasing components material cost.
Generally there are following defects for the camshaft of the prior art:
In order to meet the requirement of camshaft transmitting torque, need to meet on the diameter design of first grade of camshaft journal certain strong
The diameter of degree, the camshaft journal of current remaining each shelves of most of camshafts is equal with the diameter of first grade of camshaft journal or phase
It is poor little, there is the phenomenon that design in design, and increased the quality and inertia force of camshaft, the reliability of camshaft is made
At adverse effect, while also increasing components cost.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of camshaft, the diameter of axle of first grade of shaft part is greater than remaining each shelves shaft part
The diameter of axle, meet the requirement of camshaft transmitting torque in this way, and reduce the inertia force in camshaft operational process and zero
Component materials cost.
To achieve the above object, the utility model provides a kind of camshaft comprising first grade of shaft part and remaining is each
Shelves shaft part, the diameter of axle of first grade of shaft part are greater than the diameter of remaining each shelves shaft part, and one end of camshaft is arranged in first grade of shaft part, the
One grade of shaft part is for installing bearing.
In a preferred embodiment, camshaft further includes ladder shaft part, is arranged in first grade of shaft part, ladder shaft part
To install thrust plate.
In a preferred embodiment, camshaft further include at least one first radial direction oil hole and at least one second
Radial direction oil hole, at least one first radial direction oil hole are arranged on ladder shaft part, at least one second radial direction oil hole is arranged first
On shelves shaft part.
In a preferred embodiment, at least one first radial direction oil hole is to provide lubricating oil for thrust plate, at least
One the second radial direction oil hole is to provide lubricating oil for bearing.
In a preferred embodiment, camshaft further includes axial oil duct, at least one first radial direction oil hole and
At least one second radial direction oil hole is connected, and provides lubricating oil for it, and axial oil duct is connected to body lubricating oil duct.
In a preferred embodiment, camshaft further includes cone changeover portion, is arranged in first grade of shaft part and remaining
Between each shelves shaft part.
Compared with prior art, the camshaft of the utility model have the advantages that first grade of the camshaft it is convex
The journal diameter of wheel shaft is larger, and the journal diameter of remaining each shelves camshaft is smaller, that is, meets the requirement of camshaft transmitting torque,
The inertia force and components material cost in camshaft operational process are reduced again.While first grade of camshaft of the camshaft
Design has oil leab on axle journal, reduces the abrasion of end wear and first grade of base-bearing bush that camshaft thrust is exempted from.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the camshaft of one embodiment of the utility model.
Main appended drawing reference explanation:
Remaining each shelves shaft part of 1-, first grade of shaft part of 2-, 3- ladder shaft part, the first radial direction oil hole of 4-, the second radial direction oil hole of 5-,
6- cone changeover portion, 7- axial direction oil duct.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, Fig. 1 is the structural schematic diagram according to the camshaft of one embodiment of the utility model.According to this reality
With a kind of camshaft of novel preferred embodiment comprising first grade of shaft part 2 and remaining each shelves shaft part 1, first grade of shaft part 2
One end of camshaft is set, and the diameter of axle of first grade of shaft part 2 is greater than the diameter of remaining each shelves shaft part 1, and design in this way avoided
Degree design can achieve the requirement for meeting camshaft transmitting torque, and reduce the inertia force in camshaft operational process
With the purpose of components material cost, and between first grade of shaft part 2 and remaining each shelves shaft part 1 by cone changeover portion 6 be connected, this
Sample can reinforce bonding strength between the two.
In some embodiments, bearing is provided on first grade of shaft part 2.In ladder shaft part to install thrust plate.
In some embodiments, camshaft further includes at least one first radial direction oil hole 4 and at least one second diameter
To oilhole 5, at least one first radial direction oil hole 4 is arranged on ladder shaft part, at least one second radial direction oil hole 5 is arranged first
On shelves shaft part 2, at least one first radial direction oil hole 4 to provide lubricating oil for thrust plate, use by least one second radial direction oil hole 5
To provide lubricating oil for bearing.The quantity of first radial direction oil hole 4 and the second radial direction oil hole 5 can be one, two, three or
More, quantity is different determines according to actual needs, and the utility model herein and is not limited.
In some embodiments, camshaft further includes axial oil duct 7, at least one first radial direction oil hole 4 and extremely
Few second radial direction oil hole 5 is connected, and provides lubricating oil for it, and axial oil duct 7 is connected to body lubricating oil duct.
In conclusion the camshaft of the utility model is had the advantage that compared with prior art since its first grade convex
The journal diameter of wheel shaft is larger, remaining each shelves camshaft journal diameter is smaller, that is, meets the requirement of camshaft transmitting torque, again
Reduce the inertia force and components material cost in camshaft operational process；And the axle journal of first grade of camshaft of camshaft is set
In respect of oil leab, reduce the abrasion of end wear and first grade of base-bearing bush that camshaft thrust is exempted from；Furthermore at first grade
Cone transition is used between camshaft and remaining each shelves camshaft, ensure that bonding strength between the two.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (6)
1. a kind of camshaft characterized by comprising
First grade of shaft part and remaining each shelves shaft part, the diameter of axle of first grade of shaft part are greater than the straight of remaining each shelves shaft part
One end of the camshaft is arranged in diameter, first grade of shaft part, and first grade of shaft part is for installing bearing.
2. camshaft as described in claim 1, which is characterized in that further include ladder shaft part, be arranged in first grade of axis
Section, the ladder shaft part is to install thrust plate.
3. camshaft as claimed in claim 2, which is characterized in that further include at least one first radial direction oil hole and at least one
A second radial direction oil hole, described at least one first radial direction oil hole are arranged on the ladder shaft part, it is described at least one second
Radial direction oil hole is arranged on first grade of shaft part.
4. camshaft as claimed in claim 3, which is characterized in that at least one described first radial direction oil hole to be described to stop
Push jack provides lubricating oil, at least one described second radial direction oil hole is to provide lubricating oil for the bearing.
5. camshaft as claimed in claim 3, which is characterized in that further include axial oil duct, with it is described at least one first
Radial direction oil hole is connected at least one described second radial direction oil hole, and provides lubricating oil, the axial direction oil duct and body for it
Oil leab connection.
6. camshaft as described in claim 1, which is characterized in that further include cone changeover portion, be arranged at described first grade
Between shaft part and remaining described each shelves shaft part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200974.2U CN209444382U (en) | 2019-02-15 | 2019-02-15 | Camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200974.2U CN209444382U (en) | 2019-02-15 | 2019-02-15 | Camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209444382U true CN209444382U (en) | 2019-09-27 |
Family
ID=68018311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920200974.2U Active CN209444382U (en) | 2019-02-15 | 2019-02-15 | Camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209444382U (en) |
-
2019
- 2019-02-15 CN CN201920200974.2U patent/CN209444382U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230117 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |