CN111734511B - Sealing cover and camshaft phase adjuster - Google Patents
Sealing cover and camshaft phase adjuster Download PDFInfo
- Publication number
- CN111734511B CN111734511B CN201910228078.1A CN201910228078A CN111734511B CN 111734511 B CN111734511 B CN 111734511B CN 201910228078 A CN201910228078 A CN 201910228078A CN 111734511 B CN111734511 B CN 111734511B
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- CN
- China
- Prior art keywords
- sealing
- cover
- bolts
- groove
- seal
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000010705 motor oil Substances 0.000 description 3
- 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 1
- 239000003921 oil Substances 0.000 description 1
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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
- F01L2001/34479—Sealing of phaser devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a sealing cover and a camshaft phase adjuster. When the seal cover is mounted in the camshaft phase adjuster, the seal cover and the stator of the camshaft phase adjuster are fixed together by a plurality of bolts, and the seal face of the seal cover abuts against the end face of the stator, a circumferential groove is formed on the end face, and a seal ring is embedded in the groove, wherein the seal cover has at least one boss formed on the seal face and facing the stator, and when the seal cover is mounted in the camshaft phase adjuster, each boss is located between two adjacent bolts in the circumferential direction and presses the seal ring against the groove. The sealing cover and the cam shaft phase adjuster can realize reliable sealing.
Description
Technical Field
The invention relates to the technical field of vehicles. In particular, the present invention relates to a seal cover for a camshaft phase adjuster and a camshaft phase adjuster including such a seal cover.
Background
Variable cam phase adjusters (VCPs) are an important component in a vehicle valve timing system. The working chamber of the currently used camshaft phase regulator is mostly formed by a pulley, a shell (stator), a rotor, a sealing cover and the like, and the sealing cover and the stator form a sealing space together to seal engine oil. The sealing surface of the sealing cover is a plane, a groove is formed in the stator, the sealing ring is arranged in the groove, and the sealing ring is pressed to be flush with the surface of the stator by the pressing force of a plurality of bolts, so that the sealing effect is realized.
CN 105927308A discloses a belt cam phaser. Four to five bolts penetrate through the shell (stator) and the cover plate, and the cover plate and the shell are fixed together in a sealing connection mode, so that a sealing working cavity is formed. In this embodiment, the sealing surface of the cover plate is a plane, so that the compression height of each section of the sealing ring is identical. In practice, however, the deformation of the cover plate in the circumferential direction is uneven under the action of oil pressure and other loads, and the deformation is greatest at the position between the two bolts, so that engine oil leaks from the middle of the two bolts under certain working conditions (particularly low-temperature working conditions).
Disclosure of Invention
The object of the present invention is to provide a sealing cover and a camshaft phase adjuster that can achieve a reliable seal.
The above technical problem is solved by a sealing cap according to the present invention. The sealing cover is used for a camshaft phase adjuster, when the sealing cover is installed in the camshaft phase adjuster, the sealing cover and a stator of the camshaft phase adjuster are fixed together through a plurality of bolts, the sealing surface of the sealing cover is abutted against the end surface of the stator, a circumferential groove is formed in the end surface, a sealing ring is embedded in the groove, wherein the sealing cover is provided with at least one protruding part which is formed on the sealing surface and faces the stator, and when the sealing cover is installed in the camshaft phase adjuster, each protruding part is located between two adjacent bolts in the circumferential direction and presses the sealing ring towards the groove. The existence of the protruding part enables the compression height of the sealing ring at the position between the adjacent bolts to be relatively larger, so that the gap caused by deformation of the sealing cover/stator can be made up, and the engine oil is prevented from leaking from the position in the middle of the adjacent bolts.
According to a preferred embodiment of the invention, the radial width of the protrusion is not greater than the radial width of the groove. This enables the projection to be fully received in the recess during assembly. Preferably, the radial width of the boss is equal to the radial width of the groove. This allows the boss to compress the seal ring to the maximum extent against the groove, thereby improving the sealing effect.
According to another preferred embodiment of the invention, the circumferential ends of the projections are circumferentially spaced apart from the respective bolts, i.e. the projections extend only in a part of the circumferential area between two adjacent bolts, such that the circumferential area between two adjacent bolts is not completely filled by the projections on the sealing cap. Preferably, the boss is located at a central position in the circumferential direction between two adjacent bolts. In this way, the compression heights of the sealing rings in the areas close to the bolts and the areas far away from the bolts can be distinguished, and the compression heights of the middle areas are larger, so that the contact stress of the sealing rings in the circumferential middle areas of the adjacent bolts is larger than that of the areas close to the bolts at the two sides, and the deformation of the sealing covers in the middle areas can be better compensated.
According to another preferred embodiment of the invention, the axial height of the protrusion is smaller than the axial depth of the groove. This also allows the projection to be fully received in the recess during assembly.
According to another preferred embodiment of the invention, the number of projections is equal to the number of bolts, i.e. one projection is provided between each two adjacent bolts. Thus, the deformation of the sealing cover in the whole circumferential direction can be effectively compensated.
According to another preferred embodiment of the invention, the boss is integrally formed with the seal cap during stamping. This can effectively reduce the processing cost.
The above problems are also solved by a camshaft phase adjuster according to the present invention, comprising a stator and a seal cover fixed together by a plurality of bolts, the seal face of the seal cover abutting an end face of the stator, a circumferential groove being formed on the end face, a seal ring being embedded in the groove, wherein the seal cover is a seal cover having the above-described characteristics.
Drawings
The invention is further described below with reference to the accompanying drawings. Like reference numerals in the drawings denote functionally identical elements. Wherein:
FIG. 1 is a perspective view of a camshaft phase adjuster according to an embodiment of the present invention;
FIG. 2 is a perspective view of a rotor and stator according to an embodiment of the invention; and
Fig. 3 is a perspective view of a sealing cap according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of a seal cover and a cam shaft phase adjuster according to the present invention will be described with reference to the accompanying drawings. The following detailed description and the accompanying drawings are provided to illustrate the principles of the invention and not to limit the invention to the preferred embodiments described, the scope of which is defined by the claims.
Fig. 1 is a perspective view of a camshaft phase adjuster according to an embodiment of the present invention. As shown in fig. 1, the camshaft phase adjuster includes a stator 3, a rotor 7, and a seal cover 1. As shown in fig. 2, the rotor 7 is nested within the stator 3 and is rotatable relative to the stator 3. A space for receiving the seal cover 1 is formed on one axial end surface of the stator 3. A circumferential groove is formed in the end face, and a sealing ring 2 is embedded in the groove, wherein the sealing ring 2 is usually made of rubber or other elastic bodies. As shown in fig. 3, one axial end face of the seal cover 1 is a seal face 6, which faces the stator 3 and contacts the above end face of the stator 3 at the time of assembly. The seal cover 1 and the stator 3 are fastened together by one or more bolts 4, and these bolts 4 are spaced apart in the circumferential direction and are preferably uniformly distributed in the circumferential direction in general. Four bolts 4 are schematically shown in the figure, but this is not limitative and the specific number of bolts 4 may be chosen according to the actual situation.
As shown in fig. 3, one or more protrusions 5 are formed on the sealing surface 6. Each of the bosses 5 faces the stator 3 at the time of assembly, and corresponds to a groove portion between two adjacent bolts 4, respectively. When the seal cover 1 is mounted in the camshaft phase adjuster, the seal face 6 abuts against the end face of the stator 3, each of the bosses 5 is located between two adjacent bolts 4 in the circumferential direction, respectively, and presses the seal ring 2 toward the groove. The compression of the projections 5 subjects the sealing ring 2 at the position between adjacent bolts to a greater contact stress, obtaining a greater compression height. In this way, when the bolts 4 fasten the sealing cover 1 and the stator 3 together, the gap caused by the large deformation at the circumferential position between the adjacent bolts 4 will be compensated for, thereby achieving a reliable seal.
Preferably, the radial width of the projection 5 is no greater than the radial width of the groove, so that the projection can be fully accommodated in the groove during assembly to better compress the sealing ring 2. In an ideal case, the radial width of the boss 5 may be equal to the width of the groove, so that the boss 5 can compress the seal ring 2 to the maximum. In addition, the axial height of the boss 5 is preferably smaller than the axial depth of the recess, which is also advantageous for fully accommodating the boss 5 in the recess.
According to a preferred embodiment of the invention, each boss 5 has its axial ends circumferentially spaced from the corresponding bolt 4. This means that each boss 5 extends along only a part of the circumferential length between two adjacent bolts 4, so that the circumferential area between adjacent bolts 4 is not completely filled with bosses 5. Further preferably, the boss 5 may be located at the circumferential center between two adjacent bolts 4. This can distinguish the compressed height of the seal ring 2 in the area close to the bolt 4 from the area far from the bolt 4, the compressed height of the middle area is relatively large, the contact force to which the seal ring 2 at the circumferential middle position of the adjacent bolt 4 is subjected is larger than that at the position close to the bolts 4 on both sides, and the deformation caused by the fastening force of the bolts 4 can be compensated for more pertinently, thereby obtaining a better sealing effect.
According to a further preferred embodiment, the number of projections 5 corresponds to the number of bolts 4, i.e. one projection 5 is provided between each two adjacent bolts 4, so as to effectively compensate for the deformation of the sealing cover in the entire circumferential direction. In addition, the protruding part 5 can be integrally formed with the main body part of the sealing cover 1 in a stamping mode, so that the processing cost is effectively reduced.
While possible embodiments are exemplarily described in the above description, it should be understood that there are numerous variations of the embodiments still through all known and furthermore easily conceivable combinations of technical features and embodiments by the skilled person. 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. The technical teaching for converting at least one exemplary embodiment is provided more in the foregoing description to the skilled person, wherein various changes may be made without departing from the scope of the claims, in particular with regard to the function and structure of the components.
Reference numeral table
1. Sealing cover
2. Sealing ring
3. Stator
4. Bolt
5. Raised portion
6. Sealing surface
7. Rotor
8. Bolt hole
Claims (9)
1. A seal cover (1) for a camshaft phase adjuster, when the seal cover (1) is installed in the camshaft phase adjuster, the seal cover (1) and a stator (3) of the camshaft phase adjuster are fixed together through a plurality of bolts (4), and a seal face (6) of the seal cover (1) abuts against an end face of the stator (3), a circumferential groove is formed on the end face, a seal ring (2) is embedded in the groove,
It is characterized in that the method comprises the steps of,
The sealing cover (1) has at least two projections (5) formed on the sealing surface (6) facing the stator (3), each projection (5) being located circumferentially between two adjacent bolts (4) and pressing the sealing ring (2) against the groove when the sealing cover (1) is installed in the camshaft phase adjuster.
2. Sealing cap (1) according to claim 1, wherein the radial width of the protrusion (5) is not greater than the radial width of the groove.
3. Sealing cap (1) according to claim 2, wherein the radial width of the boss (5) is equal to the radial width of the groove.
4. Sealing cover (1) according to claim 1, characterized in that the circumferential ends of the boss (5) are circumferentially spaced from the respective bolts (4).
5. Sealing cap (1) according to claim 4, wherein the boss (5) is located at a central position in the circumferential direction between two adjacent bolts (4).
6. Sealing cap (1) according to claim 1, characterized in that the axial height of the boss (5) is smaller than the axial depth of the groove.
7. Sealing cover (1) according to claim 1, characterized in that the number of projections (5) is equal to the number of bolts (4).
8. Sealing cover (1) according to one of claims 1 to 7, characterized in that the bulge (5) is integrally formed with the sealing cover (1) during stamping.
9. Camshaft phase adjuster, comprising a stator (3) and a sealing cover (1) fixed together by a plurality of bolts (4), wherein a sealing surface (6) of the sealing cover (1) abuts against an end surface of the stator (3), a circumferential groove is formed in the end surface, and a sealing ring (2) is embedded in the groove, characterized in that the sealing cover (1) is the sealing cover (1) according to one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228078.1A CN111734511B (en) | 2019-03-25 | 2019-03-25 | Sealing cover and camshaft phase adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228078.1A CN111734511B (en) | 2019-03-25 | 2019-03-25 | Sealing cover and camshaft phase adjuster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111734511A CN111734511A (en) | 2020-10-02 |
| CN111734511B true CN111734511B (en) | 2024-06-04 |
Family
ID=72646215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910228078.1A Active CN111734511B (en) | 2019-03-25 | 2019-03-25 | Sealing cover and camshaft phase adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111734511B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900005A (en) * | 2010-06-29 | 2010-12-01 | 绵阳富临精工机械有限公司 | Smart camshaft phase regulator of variable valve timing system of engine |
| DE102010011818A1 (en) * | 2010-03-18 | 2011-09-22 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulic camshaft adjuster for combustion engine, has stator exhibiting circulating and sealing rings, which accommodate respective grooves, where each groove is arranged in joining area between stator outer and interior parts |
| CN202646694U (en) * | 2012-05-24 | 2013-01-02 | 比亚迪股份有限公司 | Waterproof sealing device for cargo tracker |
| CN106164423A (en) * | 2014-04-04 | 2016-11-23 | 舍弗勒技术股份两合公司 | Camshaft adjuster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008032031A1 (en) * | 2008-07-07 | 2010-01-14 | Schaeffler Kg | Phaser |
-
2019
- 2019-03-25 CN CN201910228078.1A patent/CN111734511B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010011818A1 (en) * | 2010-03-18 | 2011-09-22 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulic camshaft adjuster for combustion engine, has stator exhibiting circulating and sealing rings, which accommodate respective grooves, where each groove is arranged in joining area between stator outer and interior parts |
| CN101900005A (en) * | 2010-06-29 | 2010-12-01 | 绵阳富临精工机械有限公司 | Smart camshaft phase regulator of variable valve timing system of engine |
| CN202646694U (en) * | 2012-05-24 | 2013-01-02 | 比亚迪股份有限公司 | Waterproof sealing device for cargo tracker |
| CN106164423A (en) * | 2014-04-04 | 2016-11-23 | 舍弗勒技术股份两合公司 | Camshaft adjuster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111734511A (en) | 2020-10-02 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |