CN210460779U - Rotor structure and camshaft phaser - Google Patents
Rotor structure and camshaft phaser Download PDFInfo
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- CN210460779U CN210460779U CN201921208281.4U CN201921208281U CN210460779U CN 210460779 U CN210460779 U CN 210460779U CN 201921208281 U CN201921208281 U CN 201921208281U CN 210460779 U CN210460779 U CN 210460779U
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- contact side
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Abstract
The utility model provides a rotor structure and a camshaft phaser, belonging to the field of variable valve timing devices, wherein the rotor structure is used for phase adjustment in the camshaft phaser and comprises a rotor body and a blade; the blades are circumferentially arranged on the outer edge of the rotor body; the rotor structure is provided with a contact side which is used for being arranged close to the camshaft and is provided with a step; the step is such that a portion of the contact side near the axial center is disposed to protrude with respect to a portion of the outer ring. Set up above-mentioned rotor structure in the camshaft phaser, through the utility model provides a camshaft phaser of rotor structure can reduce the frictional contact of blade and back shroud to improve rotor blade's life-span, in the corner of step and the tip chamfer of blade moreover, can further reduce the friction loss, improve the whole life of back shroud and rotor structure.
Description
Technical Field
The utility model relates to a variable valve timing device field particularly, relates to a rotor structure and camshaft phaser.
Background
The variable valve timing technology of the engine is one of new technologies gradually applied to modern cars in recent years, the engine can improve the air intake charge by adopting the variable valve timing technology, so that the charge coefficient is increased, the torque and the power of the engine can be further improved, and meanwhile, the oil consumption can be reduced and the emission of tail gas can be reduced.
Referring to fig. 1-3, the camshaft phase adjuster mainly comprises a rotor, a housing, a cover plate, a lock pin mechanism, and the like, and has a working chamber divided by a plurality of vanes of the rotor into a plurality of advance chambers and retard chambers, and the rotor can move relative to the rest of the camshaft phase adjuster. When the camshaft phase adjuster works, engine oil is introduced into the unlocking cavity and pushes the rotor, the shell and other parts to move relatively; similarly, when oil is supplied to the retraction chamber, the rotor is retracted. The phase can be adjusted by introducing engine oil into different cavities. Due to frequent adjustment during operation of the camshaft phase adjuster, friction may be generated with respect to the cover plate during rotation of the rotor. And the edge of the rotor blade is thicker than the axis of the rotor due to the press-fitting force of the positioning sleeve or the pre-tightening force of the central bolt.
When the camshaft phaser works, oil leaks to a cavity where the rotor and the front cover are located from the contact surface of the central screw and the locating sleeve, and the area of the cavity is larger than that of an oil cavity formed by the rotor and the rear cover, so that differential pressure is formed on the front end surface and the rear end surface of the rotor, and an axial force towards the camshaft is generated on the rotor. Because rotor and camshaft pass through central screw connection fixed, can promote casing part to remove to keeping away from the camshaft direction under the effect of oil pressure. In contrast, the rotor approaches the rear cover, and the rotor is in contact with the rear cover.
Meanwhile, the positioning sleeve is arranged on the rotor in an interference press fit manner, the rotor can deform along the axial direction under the force of the interference press fit, the deformation direction is towards the camshaft, and the deformation amount generated at the position far away from the axis is larger; meanwhile, the outer circle of the rotor can generate larger axial deformation under the influence of temperature change. At the moment, under the combined action of oil pressure, the outer circle of the rotor can be in contact with the rear cover plate, and due to the fact that the edge contact surface is small, the contact pressure is large, abnormal abrasion or damage is easily caused to the rotor cover plate, and therefore the function failure of the phaser is caused. The wear of the large diameter of the rotor and the cover plate is aggravated, and the risk of excessive wear failure or the risk of clamping stagnation of the camshaft phaser caused by falling metal exists. The side length of the force arm of the friction point can also cause the friction torque of the camshaft phaser to be increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rotor structure and camshaft phaser aims at solving the above-mentioned problem that rotor structure and camshaft phaser exist among the prior art.
The utility model discloses a realize like this:
in a first aspect, a rotor structure is provided, the structure comprising a rotor body and a blade;
the blades are circumferentially arranged on the outer edge of the rotor body;
the rotor structure has a contact side for positioning adjacent to a camshaft, the contact side being provided with a step;
the step enables the part of the contact side close to the axle center to be arranged in a protruding mode relative to the part of the outer ring.
In certain implementations of the first aspect, the step is disposed on the contact side at a location of the vane.
In certain implementations of the first aspect, the step is provided at a location on the contact side where the rotor body connects to the blade.
With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, a corner of the step is chamfered.
With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, the contact side of the blade outer edge is beveled.
In a second aspect, a camshaft phaser is provided, comprising a housing, a front cover plate, a rear cover plate and the rotor structure of the first aspect;
the rotor structure further has a positioning side corresponding to the contact side;
the shell is provided with a mounting hole, and the front cover plate and the rear cover plate are arranged on two sides of the shell and cover the mounting hole; the shell, the front cover plate and the rear cover plate enclose the mounting hole to form a working inner cavity;
the rotor structure is installed in the work inner cavity, the contact side is close to the rear cover plate, and the positioning side is close to the front cover plate.
In combination with the second aspect, the camshaft phaser further comprises a positioning sleeve, the rotor body is arranged on the positioning side, and the positioning sleeve is in interference fit with the rotor body through the mounting groove.
With reference to the second aspect and the foregoing implementation manner, an assembly hole is formed in an axis of the rotor body, and the assembly hole is used for mounting the camshaft.
The utility model has the advantages that: through the utility model provides a camshaft phaser of rotor structure can reduce the frictional contact of blade and back shroud to improve rotor blade's life-span, in the corner of step and the tip chamfer of blade moreover, can further reduce the friction loss, improve the whole life of back shroud and rotor structure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic cross-sectional view of a conventional camshaft phaser provided in an embodiment of the present invention in actual use;
fig. 2 is a schematic structural view of a conventional camshaft phaser in a perspective view behind a front cover plate according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a prior art camshaft phaser provided by an embodiment of the present invention;
fig. 4 is a cross-sectional view of a rotor structure provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a rotor structure according to an embodiment of the present invention.
Icon: 001-camshaft phaser; 010-rotor construction; 100-a rotor body; 200-blades; 110-step; 101-contact side; 103-positioning side; 300-a housing; 400-front cover plate; 500-rear cover plate; 310-a working lumen; 600-a positioning sleeve; 130-assembly holes; 002-camshaft; 311-an unlocking chamber; 313-return chamber.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Examples
Referring to fig. 4 and 5 in conjunction with fig. 2 and 3, the camshaft phaser 001 according to the present embodiment includes a housing 300, a front cover plate 400, a rear cover plate 500, a positioning sleeve 600, and a rotor structure 010;
the housing 300 has mounting holes, and the front cover plate 400 and the rear cover plate 500 are disposed at both sides of the housing 300 to cover the mounting holes; the housing 300, the front cover plate 400 and the rear cover plate 500 enclose the mounting holes to form a working inner cavity 310; the rotor structure 010 is mounted in the working cavity 310;
the rotor structure 010 includes a rotor body 100 and a blade 200; the blades 200 are circumferentially disposed at an outer edge of the rotor body 100;
the rotor structure 010 has a contact side 101 for being arranged close to the camshaft 002 and a positioning side 103 corresponding to the contact side 101; an assembly hole 130 is provided at the axial center of the rotor body 100, and the assembly hole 130 is used for mounting the camshaft 002.
Generally, the axial position of the rotor structure 010 is fixed by the front cover plate 400 and the rear cover plate 500, and a positioning groove is provided at a side of the front cover plate 400 facing the rear cover plate 500, and the positioning sleeve 600 is disposed in the positioning groove for controlling the radial displacement of the rotor body 100.
To solve the friction between the blade 200 and the back cover plate 500, a step 110 is provided at the contact side 101 of the rotor structure 010; the step 110 is such that the portion of the contact side 101 near the axial center is disposed convexly with respect to the portion of the outer ring, i.e., such that the contact side 101 forms a central convex, depressed-edge step 110. In the in-service use process, when blade 200 was close to back shroud 500, the convex surface of step 110 can contact back shroud 500 earlier and back shroud 500 contact friction, replaces blade 200 through step 110 to carry out frictional contact, can improve the life-span of blade 200, and on the other hand because step 110 sets up at the inner ring, therefore the arm of force diminishes, and friction torque diminishes, can reduce friction loss.
In the present embodiment, the step 110 is provided on the contact side 101 at a position where the rotor body 100 is connected to the blade 200. This minimizes the moment arm. In other embodiments, other locations on the contact side 101 at the blade 200 may be provided, but the effect may be slightly less than in this embodiment.
To increase the friction surface area and reduce the contact pressure, the corners of the step 110 are beveled, and in practice the bevel is deformed to be almost parallel to the back cover plate 500. This may further increase the life of the back cover plate 500 and the blade 200.
Also, in the present embodiment, the contact side 101 at the outer edge of the blade 200 is chamfered, and the bevel angle is deformed to be almost parallel to the back cover plate 500 in actual use. This also increases the life of the back cover plate 500 and the blade 200 as much as possible.
It should be noted that, the two sides of the vane 200 are separated into the unlocking cavity 311 and the returning cavity 313 of the phaser, and the oil drainage between the unlocking cavity 311 and the returning cavity 313 may be increased due to the arrangement of the step 110, so the height of the convex surface and the concave surface of the step 110 is more than 10 micrometers, but the oil drainage between the unlocking cavity 311 and the returning cavity 313 of the phaser needs to be below a standard line.
Through the utility model provides a camshaft phaser 001 of rotor structure 010 can reduce the frictional contact of blade 200 and back shroud 500 to improve rotor blade 200's life-span, in the corner of step 110 and the tip chamfer of blade 200 moreover, can further reduce the friction loss, improve the whole life of back shroud 500 and rotor structure 010.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A rotor structure is used for phase adjustment in a camshaft phaser and is characterized by comprising a rotor body and vanes;
the blades are circumferentially arranged on the outer edge of the rotor body;
the rotor structure has a contact side for positioning adjacent to a camshaft, the contact side being provided with a step;
the step enables the part of the contact side close to the axle center to be arranged in a protruding mode relative to the part of the outer ring.
2. The rotor structure of claim 1, wherein the step is disposed on the contact side at a location of the blade.
3. The rotor structure of claim 1, wherein the step is provided at a position on the contact side where the rotor body is connected to the blade.
4. The rotor structure of claim 1, wherein corners of the steps are chamfered.
5. The rotor structure of claim 1, wherein the contact side of the blade outer edge is chamfered.
6. A camshaft phaser comprising a housing, a front cover plate, a rear cover plate and a rotor structure as claimed in any one of claims 1 to 5;
the rotor structure further has a positioning side corresponding to the contact side;
the shell is provided with a mounting hole, and the front cover plate and the rear cover plate are arranged on two sides of the shell and cover the mounting hole; the shell, the front cover plate and the rear cover plate enclose the mounting hole to form a working inner cavity;
the rotor structure is installed in the work inner cavity, the contact side is close to the rear cover plate, and the positioning side is close to the front cover plate.
7. The camshaft phaser of claim 6, further comprising a locating sleeve, said rotor body being provided with a mounting slot on said locating side, said locating sleeve being in interference fit with said rotor body through said mounting slot.
8. A camshaft phaser as in claim 6 wherein an assembly hole is provided at the axial center of the rotor body for mounting the camshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921208281.4U CN210460779U (en) | 2019-07-29 | 2019-07-29 | Rotor structure and camshaft phaser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921208281.4U CN210460779U (en) | 2019-07-29 | 2019-07-29 | Rotor structure and camshaft phaser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460779U true CN210460779U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921208281.4U Active CN210460779U (en) | 2019-07-29 | 2019-07-29 | Rotor structure and camshaft phaser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295963A (en) * | 2019-07-29 | 2019-10-01 | 绵阳富临精工机械股份有限公司 | A kind of rotor structure and camshaft phaser |
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2019
- 2019-07-29 CN CN201921208281.4U patent/CN210460779U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295963A (en) * | 2019-07-29 | 2019-10-01 | 绵阳富临精工机械股份有限公司 | A kind of rotor structure and camshaft phaser |
| CN110295963B (en) * | 2019-07-29 | 2024-03-08 | 绵阳富临精工机械股份有限公司 | Rotor structure and camshaft phaser |
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