CN108301890A - camshaft phaser - Google Patents
camshaft phaser Download PDFInfo
- Publication number
- CN108301890A CN108301890A CN201810082740.2A CN201810082740A CN108301890A CN 108301890 A CN108301890 A CN 108301890A CN 201810082740 A CN201810082740 A CN 201810082740A CN 108301890 A CN108301890 A CN 108301890A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- camshaft phaser
- leaf spring
- bottom wall
- stator
- 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
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000005452 bending Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 241000278713 Theora Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 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
Landscapes
- 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 phaser. The camshaft phaser includes a stator, a rotor rotatable relative to the stator, and a lock assembly for locking relative rotation between the rotor and the stator. The locking assembly includes a core print, a locking pin, an elastic member, and a sleeve assembly. The sleeve assembly is fixed relative to the stator, and the sleeve assembly includes a bottomed sleeve and at least one leaf spring installed in the sleeve, the leaf spring extending along a circumferential direction of the sleeve and being formed with a convex portion that protrudes toward a radially inner side of the sleeve, so that the lock pin can be brought into contact with the convex portion after protruding into the sleeve by the elastic member. Thus, the camshaft phaser of the present invention disposes the leaf spring within the sleeve, and the contact between the detent pin and the leaf spring dampens the movement of the detent pin into the sleeve during the process of achieving the detent function, thereby eliminating or reducing noise generated by the collision between the detent pin and the sleeve during the above process.
Description
Technical field
The present invention relates to camshaft phasers.
Background technology
In general, camshaft phaser by end cap, rotor and stator (stator and end cap are relatively fixed) three in camshaft phase
The inside of position device forms multiple oil pockets, rotor can be made to be rotated relative to stator and end cap to multiple oil pocket input hydraulic pressure oil,
To adjust camshaft phase by rotor banding moving cam axis.Due to when not needing variable cam timing system and working
It is required that rotor cannot be relative to stator rotation, therefore using lock assembly come the relative rotation of locking stator and rotor.
Specifically, in the prior art, as shown in Figure 1a, lock assembly 30 includes core print 301, elastic component 302, lock pin
303 and sleeve 304 (as shown in Figure 1 b specific).The rotor 20 of camshaft phaser is formed with the through-hole penetrated through on axial A, core
First 301 are installed in the through-hole.The end cap 10 (locking lid) of camshaft phaser is formed with the conduct locking that axially A extends
The mounting hole in hole, the mounting hole are located at the position roughly the same with lead to the hole site on radial R, and sleeve 304 is installed on the installation
In hole.Elastic component 302 is set in core print 301 and one end of elastic component 302 is connected to core print 301, and lock pin 303 is partly to surround
The mode of elastic component 302 is set in elastic component 302, and the other end of elastic component 302 is connected to lock pin 303 so that lock pin 303
It can be moved in a manner of close/separate sleeve 304.
When camshaft phaser carries out timing operation, lock pin 303 is detached from sleeve 304, the locking of lock assembly 30
Function is released from；When camshaft phaser enters the state for not needing timing operation from above-mentioned timing job state, rotor 20
Through-hole and the mounting hole of end cap 10 realize and substantially correspond on axial A.The lock pin under the action of elastic force of elastic component 302
303 one end is stretched into sleeve 304, and lock assembly 30 realizes latch functions again.But lock is realized again in lock assembly 30
Only during function, collision is will produce between lock pin 303 and sleeve 304, to easy to produce noise.
Invention content
It is made that the present invention in order to overcome the defect of the above-mentioned prior art.The goal of the invention of the present invention is to provide one kind
Novel camshaft phaser can be eliminated or reduce during realizing latch functions by between lock pin and sleeve
Collide the noise generated.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that.
The present invention provides a kind of following camshaft phaser, the camshaft phaser includes stator, rotor and lock
Only component, the rotor can be relative to the stator rotations, and the lock assembly is for rotor and the stator described in locking
Between relative rotation, the lock assembly includes：Core print, it is logical that the core print is installed on axially extending for the rotor
In hole；Lock pin, the lock pin are installed in a manner of it can move in the axial direction in the through-hole；Elastic component, the bullet
One end of property part is connected to the core print, and the other end of the elastic component is connected to the lock pin；And sleeve assembly, it is described
Sleeve assembly is fixed relative to the stator, and the sleeve assembly includes sleeve with the end and is installed in the sleeve
At least one leaf spring, the leaf spring along the sleeve circumferentially extending and be formed with radial direction towards the sleeve
The lug boss of inner bulge so that the lock pin stretched under the action of the elastic component after the sleeve can with it is described
Lug boss contacts.
Preferably, the sleeve assembly includes multiple leaf springs, and the multiple leaf spring is in the circumferential each other
It is arranged at interval.
It is highly preferred that the sleeve includes circular bottom wall and outer peripheral edge being axially facing along the sleeve from bottom wall
The side wall that axial side extends, one end far from the bottom wall of the side wall form the opening stretched into for the lock pin, and
And the multiple leaf spring is installed on the sleeve simultaneously in such a way that radial outside ora terminalis is connected to the inner surface of the side wall
And the central portion in the axial direction of each leaf spring forms the lug boss.
It is highly preferred that the radial outside ora terminalis of each leaf spring forms the bending section being bent towards radially inner side, institute
It states sleeve and is formed with accommodating groove corresponding with the bending section, the bending section is accommodated in the accommodating groove.
It is highly preferred that the side wall of the sleeve further includes the flange part protruded from described one end towards radially inner side, and
The accommodating groove is formed at the position of the bottom wall to cross with the side wall and the flange part crosses with the side wall
Position at.
It is highly preferred that the inner peripheral surface of the side wall is formed with the multiple stopper sections protruded towards radially inner side, it is each it is described only
Stopper is located between two leaf springs adjacent to each other in the multiple leaf spring.
It is highly preferred that each stopper section is at least partially situated in the accommodating groove.
It is highly preferred that the surface towards the opening of the bottom wall is formed with multiple Oil Guide channels.
It is highly preferred that the multiple Oil Guide channel passes through from the bottom wall towards multiple bottom wall protrusions of the opening protrusion
It is formed, the multiple bottom wall protrusion intersects each other in the central position of the bottom wall.
Preferably, the camshaft phaser further includes relative to the fixed end cap of the stator, and the sleeve is fixed on
In the mounting hole of the end cap axially extended.
By using said program, the present invention provides a kind of novel camshaft phasers, and leaf is arranged in sleeve
Flat spring stretches into sleeve by contact during realizing latch functions between lock pin and leaf spring to lock pin
Movement into row buffering, to eliminate or reduce the noise generated in above process by the collision between lock pin and sleeve.
Description of the drawings
Fig. 1 a are the schematic cross-sectional views axially of the camshaft phaser of the prior art；Fig. 1 b are the cams in Fig. 1 a
The cutaway enlargement diagram of the sleeve of the lock assembly of axis phaser.
Fig. 2 a are the stereoscopic schematic diagrams of the sleeve assembly of the lock assembly of camshaft phaser according to the present invention；Fig. 2 b are
The stereoscopic schematic diagram of the leaf spring of sleeve assembly in Fig. 2 a.
Reference sign
10 end caps (locking lid) 20 rotor, 30 lock assembly, 301 core print, 302 elastic component, 303 lock pin, 304 sleeve
1 sleeve, 11 bottom wall, 111 accommodating groove, 112 bottom wall protrusion, 12 side wall, 121 stopper section, 13 flange part, 2 blade bullet
21 lug boss of spring, 22 bending section
A axial directions R is radial
Specific implementation mode
Technical scheme of the present invention is described in detail below with reference to Figure of description.In specific implementation below
In mode, unless otherwise specified, the set of the lock assembly of camshaft phaser that is axial, radially and circumferentially referring respectively to the present invention
The axial direction, radially and circumferentially of cylinder.In addition, the basic structure of camshaft phaser according to the present invention and the camshaft of the prior art
The basic structure of phaser is roughly the same, the difference is that the structure of the sleeve of lock assembly between them.Therefore, below
Only the sleeve assembly of the lock assembly of camshaft phaser according to the present invention will be described in detail, and omitted to according to this
The explanation of the other structures of the camshaft phaser of invention.
The sleeve assembly of the lock assembly of camshaft phaser according to the present invention is installed on the end cap of camshaft phaser
In the mounting hole of (locking lid), so that the sleeve assembly is fixed relative to the stator of camshaft phaser.As shown in Figure 2 a, should
Sleeve assembly includes two leaf springs 2 of sleeve 1 and the inside for being installed on sleeve 1 with the end.
In the present embodiment, the bottom wall 11 of sleeve 1 including circular plate and from the outer peripheral edge of bottom wall 11 along sleeve 1
It is axially facing the side wall 12 that axial side extends, one end of the separate bottom wall 11 of side wall 12 forms the locking for camshaft phaser
Sell the opening stretched into.In addition, sleeve 1 further includes convex from the radially inner side of the ora terminalis towards sleeve 1 of the one end for forming above-mentioned opening
The flange part 13 gone out.Side wall 12 and flange part 13 continuously extend each along the circumferential of sleeve 1 on complete cycle.
Further, at the position of bottom wall 11 to cross with side wall 12 and the position of flange part 13 to cross with side wall 12
It is respectively formed an accommodating groove 111 at (not shown), thus forms two accommodating grooves 111 altogether.The two accommodating grooves 111 each along
The circumferential direction of sleeve 1 continuously extends on complete cycle.Be formed in bottom wall 11 accommodating groove 111 be directed away from flange part 13 direction it is recessed
It falls into, the accommodating groove 111 for being formed in flange part 13 is directed away from the direction recess of bottom wall 11.
Further, the inner peripheral surface of side wall 12 is formed with two stopper sections 121 towards the radially inner side protrusion of sleeve 1,
A part for each stopper section 121 is formed in the accommodating groove 111 of bottom wall 11, rest part along side wall 12 inner surface court
Extend certain distance to flange part 13.
In addition, the surface towards opening of bottom wall 11 is formed, there are two bottom wall protrusions 112.Two 112 directions of bottom wall protrusion
The direction of flange part 13 is protruded, the two bottom wall protrusions 112 intersect each other at the substantial middle position of bottom wall 11 and form ten
Word shape and each extend to accommodating groove 111.Oil Guide channel is formed by two bottom wall protrusions 112 so that hydraulic oil is to lock pin
Active force overcome the elastic force of elastic component so that lock pin is detached from sleeve 1.
In the present embodiment, as shown in Figure 2 b, two leaf springs 2 all have arcuate shape and the arcuate shape
Curvature is roughly the same with the curvature of side wall 12 of sleeve 1 so that circumferentially extending of the leaf spring 2 approximately along sleeve 1.Each blade
Spring 2 includes the central portion that is formed in axial direction and the lug boss 21 that is protruded towards radially inner side and from the two of the lug boss 21
The bending section 22 that side edge (radial outside ora terminalis) is bent towards radially inner side.In this way, in the mistake of lug boss 21 and bending section 22
It crosses at position and forms the radial outside ora terminalis of leaf spring 2.
Two leaf springs 2 are installed on sleeve 1 in such a way that radial outside ora terminalis is connected to the inner surface of side wall 12, make
The lug boss 21 for obtaining each leaf spring 2 is protruded towards radially inner side.In the case where two leaf springs 2 are installed on sleeve 1, respectively
The bending section 22 of leaf spring 2 is accommodated in the accommodating groove 111 of sleeve 1 respectively so that axial direction and diameter of the leaf spring 2 in sleeve 1
It is limited upwards.
Two leaf springs 2 are arranged with being separated from each other in the circumferential so that one in two stopper sections 121 of sleeve 1
A stopper section 121 is located between a pair of opposite circumferential end of two leaf springs 2 and in two stopper sections 121 of sleeve 1
Another stopper section 121 be located between the opposite circumferential end of another pair of two leaf springs 2.In this way so that blade bullet
Spring 2 is limited in the circumferential direction of sleeve 1.In addition, between the circumferential end and corresponding stopper section 121 of two leaf springs 2
It is respectively provided with gap so that after leaf spring 2 and locking pin contacts, ensure that length can be elongated in the circumferential for leaf spring 2
To buffer impact of the lock pin to leaf spring 2.
By using the sleeve assembly of structure as above, after lock pin stretches into sleeve 1 under the elastic force effect of elastic component
It can be contacted first with the lug boss of leaf spring 2 21 so that the action for stretching into sleeve 1 of lock pin is buffered.In this way, with existing
Have in technology that lock pin is compared with the case where sleeve is in direct contact (two rigid member direct collisions), in the present invention, lock pin
(rigid member is collided with elastic component) is contacted with leaf spring 2 first just to contact with sleeve 1 later, to reduce or even eliminate lock
The noise that shotpin is generated with the collision of sleeve 1.In addition, due to lock pin when stretching into sleeve 1 central axis of lock pin and sleeve 1
Central axis usually not consistent (misaligning), therefore the lug boss 21 of leaf spring 2 need not be protruded towards radially inner side
Excessively, lead to lock assembly failure to prevent protrusion from lock pin being made to generate crooked.
The structure of the sleeve assembly of the camshaft phaser of the present invention is set forth in above, but is also needed to
What is illustrated is：
Although 1. illustrated in above-mentioned specific implementation mode the leaf spring 2 in sleeve assembly quantity be two,
It is that the invention is not limited thereto.It may be used more than two leaf springs or the blade bullet circumferentially extended may be used
The cross sectional shape of spring, a leaf spring is preferably C fonts.
2. although in illustrating that lug boss 21 is formed in the axial direction of leaf spring 2 in above-mentioned specific implementation mode
Centre portion, but the invention is not restricted to this.Lug boss 21 can be made to be formed at the different parts in the axial direction of leaf spring 2, only
Enable the lug boss 21 when lock pin stretches into sleeve 1 and locking pin contacts.
Claims (10)
1. a kind of camshaft phaser, which is characterized in that the camshaft phaser includes stator, rotor and lock assembly, institute
Stating rotor can be relative to the stator rotation, and the lock assembly is for opposite between rotor and the stator described in locking
Rotation, the lock assembly include：
Core print, the core print are installed in the through-hole of the rotor axially extended；
Lock pin, the lock pin are installed in a manner of it can move in the axial direction in the through-hole；
One end of elastic component, the elastic component is connected to the core print, and the other end of the elastic component is connected to the lock pin；
And
Sleeve assembly, the sleeve assembly are fixed relative to the stator, and the sleeve assembly include sleeve with the end and
At least one leaf spring being installed in the sleeve, the leaf spring along the sleeve circumferentially extending and be formed with
Towards the lug boss of the radially inner side protrusion of the sleeve so that the lock pin stretches into described under the action of the elastic component
It can be contacted with the lug boss after sleeve.
2. camshaft phaser according to claim 1, which is characterized in that the sleeve assembly includes multiple blades
Spring, the multiple leaf spring are arranged with being separated from each other in the circumferential.
3. camshaft phaser according to claim 2, which is characterized in that the sleeve includes the circular bottom wall and bottom of from
The outer peripheral edge of wall is along the side wall for being axially facing axial side and extending of the sleeve, one far from the bottom wall of the side wall
End forms the opening stretched into for the lock pin, and
The multiple leaf spring is installed on the sleeve in such a way that radial outside ora terminalis is connected to the inner surface of the side wall
And the central portion in the axial direction of each leaf spring forms the lug boss.
4. camshaft phaser according to claim 3, which is characterized in that the radial outside ora terminalis of each leaf spring
The bending section being bent towards radially inner side is formed, the sleeve is formed with accommodating groove corresponding with the bending section, the bending
Portion is accommodated in the accommodating groove.
5. camshaft phaser according to claim 4, which is characterized in that the side wall of the sleeve further includes from described one
The flange part protruded towards radially inner side is held, and
The accommodating groove be formed at the position of the bottom wall to cross with the side wall and the flange part with the side wall
At the position to cross.
6. camshaft phaser according to claim 4, which is characterized in that the inner peripheral surface of the side wall is formed with towards diameter
The multiple stopper sections protruded inwardly, each stopper section are located at two blades adjacent to each other in the multiple leaf spring
Between spring.
7. camshaft phaser according to claim 6, which is characterized in that each stopper section is at least partially situated at institute
It states in accommodating groove.
8. the camshaft phaser according to any one of claim 3 to 7, which is characterized in that the bottom wall towards institute
The surface for stating opening is formed with multiple Oil Guide channels.
9. camshaft phaser according to claim 8, which is characterized in that the multiple Oil Guide channel is by from the bottom
Wall towards it is described opening protrusion multiple bottom wall protrusions formed, the multiple bottom wall protrusion the bottom wall central position that
This intersection.
10. camshaft phaser according to any one of claim 1 to 7, which is characterized in that the camshaft phaser
Further include relative to the fixed end cap of the stator, the sleeve is fixed on the mounting hole of the end cap axially extended
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082740.2A CN108301890A (en) | 2018-01-29 | 2018-01-29 | camshaft phaser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082740.2A CN108301890A (en) | 2018-01-29 | 2018-01-29 | camshaft phaser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108301890A true CN108301890A (en) | 2018-07-20 |
Family
ID=62866817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810082740.2A Pending CN108301890A (en) | 2018-01-29 | 2018-01-29 | camshaft phaser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108301890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102031A (en) * | 2018-10-26 | 2020-05-05 | 舍弗勒技术股份两合公司 | Camshaft phaser and operating method thereof |
| CN112513431A (en) * | 2018-09-25 | 2021-03-16 | 舍弗勒技术股份两合公司 | Insert for camshaft phaser and camshaft phaser |
-
2018
- 2018-01-29 CN CN201810082740.2A patent/CN108301890A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513431A (en) * | 2018-09-25 | 2021-03-16 | 舍弗勒技术股份两合公司 | Insert for camshaft phaser and camshaft phaser |
| CN112513431B (en) * | 2018-09-25 | 2022-11-15 | 舍弗勒技术股份两合公司 | Insert for camshaft phaser and camshaft phaser |
| US11542843B2 (en) | 2018-09-25 | 2023-01-03 | Schaeffler Technologies AG & Co. KG | Insertion piece for camshaft phaser and camshaft phaser |
| CN111102031A (en) * | 2018-10-26 | 2020-05-05 | 舍弗勒技术股份两合公司 | Camshaft phaser and operating method thereof |
| CN111102031B (en) * | 2018-10-26 | 2023-08-22 | 舍弗勒技术股份两合公司 | Camshaft phaser and method of operating the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180720 |