CN110905622A - Camshaft phase regulator, engine and vehicle - Google Patents
Camshaft phase regulator, engine and vehicle Download PDFInfo
- Publication number
- CN110905622A CN110905622A CN201811084024.4A CN201811084024A CN110905622A CN 110905622 A CN110905622 A CN 110905622A CN 201811084024 A CN201811084024 A CN 201811084024A CN 110905622 A CN110905622 A CN 110905622A
- Authority
- CN
- China
- Prior art keywords
- end cover
- stator
- camshaft phase
- phase adjuster
- fastening nut
- 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.)
- Pending
Links
- 238000004663 powder metallurgy Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention relates to a camshaft phase adjuster, an engine and a vehicle, wherein the camshaft phase adjuster comprises: the stator and the first end cover and the second end cover which are respectively positioned at two ends of the stator in the axial direction, wherein through holes along the axial direction are formed in the first end cover, the stator and the second end cover, and the first end cover and the second end cover sequentially penetrate through the through holes through fasteners, so that the first end cover and the second end cover clamp the stator. And a groove is arranged on the end surface of the first end cover and/or the second end cover, which is far away from the stator, wherein the groove and the through hole are coaxially arranged, and a fastening nut is arranged in the groove, so that the fastening piece penetrates through the first end cover, the stator and the second end cover to be in threaded connection with the fastening nut.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a camshaft phase adjuster for an engine, wherein the camshaft phase adjuster comprises: the stator and the first end cover and the second end cover which are respectively positioned at two ends of the stator in the axial direction, wherein through holes along the axial direction are formed in the first end cover, the stator and the second end cover, and the first end cover and the second end cover sequentially penetrate through the through holes through fasteners, so that the first end cover and the second end cover clamp the stator. The invention further relates to an engine and a vehicle having such an engine.
Background
In a valve timing control apparatus of an engine, a camshaft phaser is used to adjust the phase between a crankshaft and a camshaft to advance or retard opening of a valve. In the prior art, a phaser is mostly connected through a bolt, and a threaded hole is tapped on an end cover, so that a stator bears bolt clamping force. Such a camshaft phase adjuster is known, for example, from CN 105221202 a. In order to ensure a sufficient engagement length, which ensures that the thread cannot be damaged by the clamping force of the screw, the end cap has a minimum thickness requirement, and therefore the structural dimensions are increased. In addition, machining the threaded holes in the end cap results in increased process costs. Since the strength of the powder metallurgy part is lower than that of the dense steel part, a larger thread engagement length is required to satisfy the thread strength requirement, resulting in an increase in material cost.
Disclosure of Invention
The object of the present invention is therefore to provide an improved camshaft phase adjuster which is simpler and less expensive to assemble with a new design.
The technical problem is solved by a camshaft phase adjuster for an engine, comprising: the stator and the first end cover and the second end cover which are respectively positioned at the two ends of the stator in the axial direction, wherein through holes along the axial direction are formed in the first end cover, the stator and the second end cover, and the first end cover and the second end cover sequentially penetrate through the through holes through fasteners, so that the first end cover and the second end cover clamp the stator. According to the technical scheme of the invention, a groove is arranged on the end face, away from the stator, of the first end cover and/or the second end cover, wherein the groove and the through hole are coaxially arranged, and a fastening nut is arranged in the groove, so that a fastening piece penetrates through the first end cover, the stator and the second end cover to be in threaded connection with the fastening nut. Thus, it is no longer necessary to provide threads in the through-holes of the first end cap and/or the second end cap, and the connection can be made stronger by tightening nuts with fasteners, such as bolts. The fastening nut can use standard nuts, is convenient for mass production and has low component cost. In addition, the thickness of the first end cover and/or the second end cover can be designed to be thinner, and material cost is saved.
According to the preferred embodiment of the invention, the fastening nut is in interference fit with the groove, so that the fastening nut can be fixed in the groove after assembly, and the assembly is simplified. It is also advantageous if the shape of the recess is adapted to the fastening nut, for example if a hexagonal bolt is used for fastening and the fastening nut is hexagonal, the recess is also designed to be hexagonal, so that a better fastening effect is achieved and the tightening operation is facilitated. When the bolt is screwed into the nut, the torque born by the nut is increased, the side surface of the groove characteristic is attached to the nut, the circumferential positioning of the nut is realized, and the additional assembling, fixing and positioning characteristics are not needed. The side surface of the groove can be stressed in the operation process, so that the locking of bolt connection is realized, and the influence of the nut-sprocket friction surface on a connection system is reduced. It is also preferred that a plurality of through-holes are distributed uniformly over the end face of the first end cap and/or the second end cap and that a fastening nut is provided in each through-hole.
According to a further preferred embodiment of the invention, the through hole of the first end cap and/or the second end cap is internally threaded, in combination with a fastening nut, so that the threaded connection with the fastening element is more secure.
According to a further preferred embodiment of the invention, the first end cap and the second end cap are manufactured by powder metallurgy forming, thereby reducing costs and simplifying processing steps. It is also preferred that the sprocket is integrated in the circumferential direction of the first or second end cover, in particular in the case of a powder-metallurgical molding of the end cover, the end cover with the sprocket can be cast in one piece. The screw thread shearing force of the bolt is borne by the steel nut, the plane at the bottom of the groove of the chain wheel mainly bears the axial pressure, and the stress condition of the powder metallurgy part is improved.
The invention also relates to an engine having a camshaft phase adjuster according to the above. The invention also relates to a vehicle having the engine described above, i.e. comprising a camshaft phase adjuster having the features described above.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings,
figure 1 shows a sectional view of a camshaft phase adjuster according to the prior art,
figure 2 shows a sectional view of a camshaft phase adjuster according to the invention,
figure 3 shows a perspective view of a camshaft phase adjuster according to the invention,
fig. 4 shows a perspective view of a first end cap of a camshaft phase adjuster according to the present invention.
Identical or functionally identical components are denoted by the same reference numerals in the figures.
Detailed Description
Fig. 1 shows a cross-sectional view of a camshaft phase adjuster in the prior art. As shown, the camshaft phase adjuster includes a first end cap 1, a stator 2, a rotor 3, and a second end cap 4. The rotor 3 is rotatably disposed in the stator 2, and the first and second end caps 1 and 4 are disposed on both sides of the axis of the stator 2 to clamp the stator 2 therebetween. Corresponding through holes are formed in the first end cover 1, the stator 2 and the second end cover 4, internal threads are formed in the through holes of the first end cover 1, and the first end cover 1, the stator 2 and the second end cover 4 are connected through the bolts 5 with the external threads in a threaded mode. The first end cap 1 and the second end cap 4 are preferably formed by powder metallurgy. In addition, since the screw coupling is performed in the through hole of the first cap 1, a certain thickness is required for the first cap 1 in order to secure a required screw engagement length.
The operating principle of the camshaft adjuster is as follows: in the valve timing control device, a camshaft axially penetrates through a rotor 3 and is connected with the rotor 3, and a stator 2 is in transmission connection with a crankshaft through a first end cover 1. When the rotor 3 rotates relative to the stator 2, the camshaft and the rotor 3 rotate synchronously to adjust the phase position of the camshaft relative to the crankshaft and control the valve to delay or advance to open; when stator 2 and rotor 3 locking, because stator 2 and first end cover 1 are fixed connection, the bent axle can drive the camshaft rotation through first end cover 1 to the control valve is opened or is closed.
Fig. 2 shows a sectional view of a camshaft phase adjuster according to the invention. Compared to the prior art shown in fig. 1, the improvement is further developed in that no internal thread is provided on the through-opening in the first end cap 1, but rather a recess 7 is provided on the radial end face (plane extending in radial direction) of the first end cap 1 facing away from the stator 2, which recess has the same axis of rotation as the through-opening, i.e. is arranged coaxially. In this recess 7 a fastening nut 6 is arranged. The bolts 5 are screwed with the fastening nuts 6 through the through holes of the second end cap 4 and the stator 2 so that the stator 2 is clamped between the first end cap 1 and the second end cap 4.
Fig. 3 shows a perspective view of a camshaft phase adjuster according to the invention, and fig. 4 shows a perspective view of a first end cover 1 according to the invention, which makes it possible to show the outer surface of the first end cover 1 more clearly, wherein a gear wheel is arranged in the circumferential direction of the first end cover 1, i.e. the first end cover 1 can simultaneously also function as a sprocket wheel. In this embodiment, four through holes are provided in the first end cap 1, which are uniformly arranged in the outer circumferential direction of the central axial hole of the first end cap 1. As shown in fig. 3 and 4, a groove 7 is provided on the through hole of the first end cap 1, and a fastening nut 6 is seated in the groove 7. Preferably, the fastening nut 6 is an interference fit with the groove 7. It is further advantageous that the shape of the recess 7 is matched to the fastening nut 6, so that the fastening nut 6 can be fixed more securely. The thickness of the fastening nut may be equal to or greater than the depth of the groove 7 as desired. This design is particularly suitable for cases where the first end cap 1 has a low thickness, and since it is not suitable to provide an internal thread in the through hole of the first end cap 1, the fastening nut 6 is fixed by a groove to be screwed with the bolt 5.
Although possible embodiments have been described by way of example in the above description, it should be understood that numerous embodiment variations exist, still by way of combination of all technical features and embodiments that are known and that are obvious to a person skilled in the art. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. From the foregoing description, one of ordinary skill in the art will more particularly provide a technical guide to convert at least one exemplary embodiment, wherein various changes may be made, particularly in matters of function and structure of the components described, without departing from the scope of the following claims.
List of reference numerals
1 first end cap
2 stator
3 rotor
4 second end cap
5 bolt
6 fastening nut
7 groove
Claims (9)
1. A camshaft phase adjuster for an engine, comprising: the stator and a first end cover and a second end cover which are respectively positioned at two ends of the stator in the axial direction, wherein through holes along the axial direction are arranged on the first end cover, the stator and the second end cover, and fasteners sequentially penetrate through the through holes to enable the first end cover and the second end cover to clamp the stator,
it is characterized in that the preparation method is characterized in that,
and a groove is arranged on the end face, away from the stator, of the first end cover and/or the second end cover, wherein the groove and the through hole are coaxially arranged, and a fastening nut is arranged in the groove, so that the fastening piece penetrates through the first end cover, the stator and the second end cover to be in threaded connection with the fastening nut.
2. A camshaft phase adjuster as claimed in claim 1, wherein the fastening nut is an interference fit with the recess.
3. A camshaft phase adjuster as claimed in claim 1, wherein the shape of the recess matches the fastening nut.
4. The camshaft phase adjuster according to claim 1, wherein the through hole has an internal thread.
5. A camshaft phase adjuster as claimed in claim 1, wherein the first and second end caps are manufactured by powder metallurgy forming.
6. The camshaft phase adjuster according to claim 1, wherein a sprocket is integrated in a circumferential direction of the first or second end cover.
7. A camshaft phase adjuster as claimed in claim 1, wherein a plurality of said through holes are evenly distributed on said end face and said fastening nut is disposed in each through hole.
8. An engine having a camshaft phase adjuster according to any one of claims 1 to 7.
9. A vehicle characterized by having the engine according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811084024.4A CN110905622A (en) | 2018-09-17 | 2018-09-17 | Camshaft phase regulator, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811084024.4A CN110905622A (en) | 2018-09-17 | 2018-09-17 | Camshaft phase regulator, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110905622A true CN110905622A (en) | 2020-03-24 |
Family
ID=69813428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811084024.4A Pending CN110905622A (en) | 2018-09-17 | 2018-09-17 | Camshaft phase regulator, engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110905622A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536373A (en) * | 2010-12-08 | 2012-07-04 | 施瓦本冶金工程汽车有限公司 | Device for adjusting a rotation angle position of a camshaft |
| US20150292366A1 (en) * | 2012-10-31 | 2015-10-15 | Schaeffler Technologies AG & Co. KG | Rotor of a camshaft adjuster, camshaft adjuster with such a rotor, and method for producing a rotor |
| US20160032789A1 (en) * | 2013-03-18 | 2016-02-04 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster |
| CN105569758A (en) * | 2016-03-03 | 2016-05-11 | 奇瑞汽车股份有限公司 | Timing adjusting device of engine valve |
| US20170009615A1 (en) * | 2014-01-30 | 2017-01-12 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster |
| US20180119581A1 (en) * | 2016-10-28 | 2018-05-03 | Schaeffler Technologies AG & Co. KG | Sheet metal locking cover for a cam phaser |
-
2018
- 2018-09-17 CN CN201811084024.4A patent/CN110905622A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536373A (en) * | 2010-12-08 | 2012-07-04 | 施瓦本冶金工程汽车有限公司 | Device for adjusting a rotation angle position of a camshaft |
| US20150292366A1 (en) * | 2012-10-31 | 2015-10-15 | Schaeffler Technologies AG & Co. KG | Rotor of a camshaft adjuster, camshaft adjuster with such a rotor, and method for producing a rotor |
| US20160032789A1 (en) * | 2013-03-18 | 2016-02-04 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster |
| US20170009615A1 (en) * | 2014-01-30 | 2017-01-12 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster |
| CN105569758A (en) * | 2016-03-03 | 2016-05-11 | 奇瑞汽车股份有限公司 | Timing adjusting device of engine valve |
| US20180119581A1 (en) * | 2016-10-28 | 2018-05-03 | Schaeffler Technologies AG & Co. KG | Sheet metal locking cover for a cam phaser |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20240320 Address after: 1st Floor, Building 2, No. 1 Antuo Road, Anting Town, Jiading District, Shanghai Applicant after: SCHAEFFLER HOLDING(CHINA) Co.,Ltd. Country or region after: China Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES AG & CO. KG Country or region before: Germany |
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| TA01 | Transfer of patent application right |