CN107780990A - Camshaft phase adjuster - Google Patents
Camshaft phase adjuster Download PDFInfo
- Publication number
- CN107780990A CN107780990A CN201610798693.2A CN201610798693A CN107780990A CN 107780990 A CN107780990 A CN 107780990A CN 201610798693 A CN201610798693 A CN 201610798693A CN 107780990 A CN107780990 A CN 107780990A
- Authority
- CN
- China
- Prior art keywords
- scroll spring
- stator
- phase adjuster
- camshaft phase
- rotor
- 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
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
- F01L2001/34483—Phaser return springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
A kind of camshaft phase adjuster, including：Stator；Rotor, it is rotatably disposed in stator；Drive end bearing bracket, fixed positioned at the axial side of stator, and with stator；Scroll spring, positioned at drive end bearing bracket backwards to the axial side of stator, and shunk when rotor relative stator rotates along one of direction；With the governor motion of rotor linkage, governor motion is all the time along camshaft phase adjuster radially outward direction against scroll spring outmost turns close to the position of outer end；When the direction that rotor relative stator edge gradually tapers up scroll spring rotates, governor motion is driven to be moved with respect to scroll spring so that scroll spring is increasingly closer to outer end with the position that governor motion offsets.So, effective active length increase of scroll spring of the present invention, can at least offset the internal stress increase of a part of scroll spring, reduce the possibility that scroll spring is broken.
Description
Technical field
The present invention relates to variable cam timing (Variable Camshaft Timing, abbreviation VCT) technical field, especially
It is to be related to a kind of camshaft phase adjuster.
Background technology
Camshaft phase adjuster is arranged on the front end of camshaft, its be used for according to the adjustment of rotational speed camshaft of engine and
Phase between bent axle, so as to change port timing, realization reaches best combustion efficiency, improves fuel economy.
A kind of existing camshaft phase adjuster includes stator, the rotor being rotatably disposed in stator and positioned at stator
The drive end bearing bracket of axial side, drive end bearing bracket are fixed with stator.Drive end bearing bracket is provided with scroll spring backwards to the side of stator in the axial direction,
The outer end of scroll spring is connected with stator, the inner is connected with rotor.The axis of one and drive end bearing bracket are fixedly installed on drive end bearing bracket
Parallel cylindrical member, the cylindrical member is radially outward direction against the outmost turns of scroll spring, with radially supporting scrollwork bullet
Spring.
Rotor relative stator along one of direction rotate to adjust port timing when, scroll spring shrink.When rotor revolves
Go to after set angle realizes optimal port timing, under the restoring force effect of scroll spring, rotor energy relative stator is along anti-
Direction rotates, and is resetted so as to realize.
However, there are following deficiencies in above-mentioned camshaft phase adjuster：Rotor relative stator edge makes what scroll spring shrank
When direction rotates, gradually increasing with the corner of rotor, the internal stress of scroll spring gradually increases, once scroll spring is starting
Resonated under the excitation of machine, then the internal stress of scroll spring can increased dramatically, and cause scroll spring to be broken.
The content of the invention
The problem to be solved in the present invention is：Existing camshaft phase adjuster receives scroll spring on rotor relative stator edge
When the direction of contracting rotates, scroll spring easy fracture.
To solve the above problems, the invention provides a kind of camshaft phase adjuster, including：Stator；Rotor, it is rotatable
Ground is located in the stator；Drive end bearing bracket, fixed positioned at the axial side of the stator, and with the stator；Scroll spring, it is located at
The drive end bearing bracket is backwards to the axial side of the stator, and when the rotor rotates relative to the stator along one of direction
Shrink, the one end defined in the both ends of the scroll spring in a roll-up direction positioned at outmost turns is outer end；Join with the rotor
Dynamic governor motion, the governor motion is all the time along the camshaft phase adjuster radially outward direction against the scrollwork
Spring outmost turns are close to the position of the outer end；The relatively described stator edge of the rotor makes the side that the scroll spring gradually tapers up
To during rotation, driving the governor motion with respect to scroll spring motion so that the scroll spring offsets with governor motion
Position is increasingly closer to the outer end along the coiling direction.
Alternatively, the governor motion includes：The first connecting rod and second connecting rod being rotatably connected, the first connecting rod with
The rotor is fixed, and the second connecting rod is rotatably connected with the stator, drive end bearing bracket or sprocket wheel.
Alternatively, one end of the second connecting rod against the scroll spring outmost turns close to the position of the outer end.
Alternatively, the first connecting rod, second connecting rod are respectively positioned on the drive end bearing bracket backwards to the axial side of the stator.
Alternatively, the camshaft phase adjuster also includes：Circumferentially-spaced along the camshaft phase adjuster is set
Some first cylindrical members put, first cylindrical member and the rotor fix and with the axis parallel of the rotor, it is described
Scroll spring is located at the radial outside of all first cylindrical members, and first cylindrical member is supported along the radially outward direction
By the scroll spring, the first connecting rod is fixed with the first cylindrical member one of them described.
Alternatively, define the other end of the scroll spring as the inner, described the inner be hooked in one of them described first
On the side face of cylindrical member.
Alternatively, the camshaft phase adjuster also includes：With the second cylindrical member of the axis parallel, described
Two cylindrical members are fixed with the drive end bearing bracket, and the outer end of the scroll spring is hooked on the side face of second cylindrical member.
Alternatively, second cylindrical member is bolt, and the drive end bearing bracket is bolted on the stator by described.
Alternatively, the governor motion is located at the radially inner side of the scroll spring outmost turns.
Alternatively, the scroll spring is plane scroll spring.
Compared with prior art, technical scheme has advantages below：
Linked by setting one in camshaft phase adjuster with rotor, and all the time radially outward direction against whirlpool
Coil spring outmost turns are close to the governor motion of outer end position, the side that gradually taper up on rotor relative stator edge scroll spring
To during rotation, governor motion is driven to be moved with respect to scroll spring, so that the position to be offseted with governor motion of scroll spring occurs
Change, and outer end is increasingly closer in a roll-up direction, so, effective active length increase of scroll spring, Neng Gouzhi
The internal stress increase of a part of scroll spring is offset less.Therefore, whirlpool is made on rotor relative stator edge in technical solution of the present invention
The internal stress of scroll spring is less than prior art during the direction that coil spring shrinks rotates, and reduces scroll spring and occurs to break
The possibility split.
Brief description of the drawings
Fig. 1 is the stereogram of one embodiment of the present of invention convexity wheel shaft phase regulator.
Embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
As shown in figure 1, the camshaft phase adjuster of the present embodiment includes stator, rotor 1, drive end bearing bracket 2, sprocket wheel 3 and whirlpool
Coil spring 4, in figure, the stator is not shown because being blocked by drive end bearing bracket 2.Wherein, rotor 1 is rotatably disposed in the stator
It is interior, it is used to adjust port timing when rotor 1 rotates relative to the stator.Drive end bearing bracket 2, sprocket wheel 3 are respectively positioned at the stator
Axial both sides, and fixed with the stator, sprocket wheel 3 is used as rear end cap.
Scroll spring 4 is located at drive end bearing bracket 2
Outer end 40, the inner 41.Wherein, outer end 40 is located at the outmost turns of scroll spring 4, and the inner 41 is located at the innermost circle of scroll spring 4.
Rotor 1 is relative to the stator along during one of direction (for counterclockwise in figure) D rotations, and scroll spring 4 gradually tapers up, whirlpool
Coil spring 4 diametrically gradually draw close by adjacent two circle.
The camshaft phase adjuster also includes the governor motion 5 to be linked with rotor 1, and so-called linkage refers to work as rotor 1
When being rotated relative to the stator, governor motion 5 can also move.Governor motion 5 all the time along camshaft phase adjuster radially outward
Direction against the outmost turns of scroll spring 4 close to the position of outer end 40 (in figure shown in dashed circle), with radially supporting scrollwork
Spring 4.It should be noted that in the inventive solutions, the outmost turns of scroll spring 4 are located against position simultaneously close to outer end 40
It should not be limited to shown in figure, as long as the position that governor motion 5 is resisted against scroll spring 4 being capable of radially supporting firmly scrollwork bullet
Spring 4.When the outmost turns of scroll spring 4 close to outer end 40 be located against position keep it is constant when, with rotor 1 along direction D revolve
The increase of gyration, the internal stress of scroll spring 4 can increase.
And in the present invention, rotor 1, along when making direction D rotations that scroll spring 4 gradually tapers up, is turning relative to the stator
Under the drive of son 1, the relative scroll spring 4 of the meeting of governor motion 5 moves so that the position to be offseted with governor motion 5 of scroll spring 4
Change, and outer end 40 be increasingly closer on the coiling direction of scroll spring 4, i.e. in scroll spring 4 from outer end 40 to
One segment length of the position that governor motion 5 offsets tapers into.So, equivalent to the effective work for increasing scroll spring 4
Make length, can at least offset the internal stress increase of a part of scroll spring 4.Therefore, in rotor 1 in technical solution of the present invention
The internal stress of scroll spring 4 is less than existing skill during the direction D rotations for shrinking scroll spring 4 relative to stator edge
Art, reduce the possibility that scroll spring 4 is broken.
During the direction D rotations that rotor 1 gradually tapers up scroll spring 4 relative to stator edge, by setting governor motion
5, it can realize：The internal stress increase of scroll spring 4 is just cancelled so that rotor 1 rotates relative to the stator along direction D
Initial time scroll spring 4 internal stress, the end time scrollwork bullet rotated equal to rotor 1 relative to the stator along direction D
The internal stress of spring 4；Or the internal stress increase only a fraction of scroll spring 4 is cancelled so that rotor 1 is relatively described fixed
The internal stress of initial time scroll spring 4 of the son along direction D rotations, the end rotated less than rotor 1 relative to the stator along direction D
The only internal stress of moment scroll spring 4, but rotor 1 is in the end time scroll spring 4 that the stator rotates along direction D
Stress, the end time scroll spring rotated less than rotor relative stator in the prior art along the direction for shrinking scroll spring
Internal stress.In the end time, port timing is adjusted in place.
In the present embodiment, governor motion 5 includes the first connecting rod 50 and second connecting rod 51 being rotatably connected, first connecting rod
50 are fixed with rotor 1, and second connecting rod 51 is rotatably connected with drive end bearing bracket 2, and one end of second connecting rod 51 is adjusted along camshaft phase
Outmost turns of the device radially outward direction against scroll spring 4.First connecting rod 50 and second connecting rod 51 are respectively positioned on drive end bearing bracket 2 backwards
The axial side of the stator, and positioned at the radially inner side of the outmost turns of scroll spring 4.
When rotor 1 rotates relative to the stator along the direction D for shrinking scroll spring 4, rotor 1 drives first connecting rod
50th, second connecting rod 51 rotates, and second connecting rod 51 is consistent with the direction of rotation of rotor 2 so that in scroll spring 4 with second connecting rod 51
The position to offset moves closer to outer end 40 on the coiling direction of scroll spring 4.
In the present embodiment, second connecting rod 51 is rotatably connected by the 3rd cylindrical member 8 with drive end bearing bracket 2, specific implementation side
Formula is：3rd cylindrical member 8 and the axis parallel of drive end bearing bracket 2, and be fixed on drive end bearing bracket 2, the column of second connecting rod 51 and the 3rd
Part 8 is rotatably connected.
In an alternative of the present embodiment, the 3rd cylindrical member 8 is located at the radial outside of the outmost turns of scroll spring 4, and second
Outmost turns radially across scroll spring 4 of the connecting rod 51 along scroll spring 4 a so that part for second connecting rod 51 is located at scrollwork bullet
The radial outside of the outmost turns of spring 4, another part are located at the radially inner side of the outmost turns of scroll spring 4.
In another alternative of the present embodiment, second connecting rod 51 is rotatably connected with the stator or sprocket wheel 3, this
In the case of, second connecting rod 51 can be arranged on the radial outside of the stator, and be no longer at drive end bearing bracket 2 backwards to the stator
Axial side.In the alternative, the linkage of rotor 1 and first connecting rod 50, second connecting rod 51 can be also realized.
In above-mentioned two alternative, when rotor 1 rotates relative to the stator along the direction D for shrinking scroll spring 4,
The direction of rotation of second connecting rod 51 and rotor 2 can be consistent, can also be inconsistent.
In the present embodiment, the 3rd cylindrical member 8 is pin.In other embodiments, the 3rd cylindrical member 8 can also be outside pin
Cylindrical member.
In the present embodiment, second connecting rod 51 is arranged to the shape of cam, but the shape of second connecting rod 51 of the present invention is not
This should be confined to.
In the present embodiment, the camshaft phase adjuster also includes along between the circumference of the camshaft phase adjuster
Every some first cylindrical members 6 of setting, the first cylindrical member 6 fixed with rotor 1 and with the axis parallel of rotor 1, scroll spring 4
Positioned at the radial outside of all first cylindrical members 6, the first cylindrical member 6 is radially outward direction against scroll spring 4 so that institute
There is the first cylindrical member 6 diametrically to support scroll spring 4.In the alternative of the present embodiment, it can also come otherwise
Radial support is carried out to scroll spring 4.
In a particular embodiment, the quantity of the first cylindrical member 6 is three, certainly, in other embodiments, the first cylindrical member
6 it can also be provided that other any amounts.
In the present embodiment, the first cylindrical member 6 is pin.In other embodiments, the first cylindrical member 6 can also be beyond pin
Any cylindrical member.
In the present embodiment, the inner 41 of scroll spring 4 is hooked on the side face of one of them the first cylindrical member 6, with reality
Existing the inner 41 and the connection of rotor 1.It should be noted that in the inventive solutions, it can also come otherwise real
The inner 41 of existing scroll spring 4 and the connection of rotor 1.
In the present embodiment, the camshaft phase adjuster also includes the second column with the axis parallel of rotor 1
Part 7, the second cylindrical member 7 are fixed with drive end bearing bracket 2, and the outer end 40 of scroll spring 4 is hooked on the side face of the second cylindrical member 7, with reality
Existing outer end 40 and the connection of stator.It should be noted that in the inventive solutions, it can also be achieved by other means
The outer end 40 of scroll spring 4 and the connection of drive end bearing bracket 2.
In the present embodiment, the second cylindrical member 7 is bolt, and drive end bearing bracket 2 is fixed on the stator by the second cylindrical member 7
On.It should be noted that in other embodiments, the second cylindrical member 7 can also be any cylindrical member beyond bolt.
In the present embodiment, scroll spring 4 is plane scroll spring, i.e. each circle of scroll spring 4 is generally aligned in the same plane
On.It should be noted that in the inventive solutions, the type of scroll spring 4 should not be limited to the present embodiment.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, this is not being departed from
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (10)
1. a kind of camshaft phase adjuster, including：
Stator；
Rotor, it is rotatably disposed in the stator；
Drive end bearing bracket, fixed positioned at the axial side of the stator, and with the stator；
Scroll spring, positioned at the drive end bearing bracket backwards to the axial side of the stator, and on the relatively described stator edge of the rotor
One of direction is shunk when rotating, and is defined one end in the both ends of the scroll spring in a roll-up direction positioned at outmost turns and is
Outer end；
Characterized in that, the camshaft phase adjuster also includes：With the governor motion of rotor linkage, the regulation machine
Structure is all the time along the camshaft phase adjuster radially outward direction against the scroll spring outmost turns close to the outer end
Position；
When the rotor rotates relative to the direction that stator edge gradually tapers up the scroll spring, the governor motion is driven
Moved with respect to scroll spring so that the scroll spring increasingly leans on the position that governor motion offsets along the coiling direction
The nearly outer end.
2. camshaft phase adjuster as claimed in claim 1, it is characterised in that the governor motion includes：Rotatably connect
The first connecting rod and second connecting rod connect, the first connecting rod are fixed with the rotor, the second connecting rod and the stator, front end
Lid or sprocket wheel are rotatably connected.
3. camshaft phase adjuster as claimed in claim 2, it is characterised in that one end of the second connecting rod is against described
Scroll spring outmost turns are close to the position of the outer end.
4. camshaft phase adjuster as claimed in claim 2, it is characterised in that the equal position of the first connecting rod, second connecting rod
In the drive end bearing bracket backwards to the axial side of the stator.
5. camshaft phase adjuster as claimed in claim 2, it is characterised in that the camshaft phase adjuster is also wrapped
Include：Along circumferentially spaced some first cylindrical members of the camshaft phase adjuster, first cylindrical member with it is described
Rotor is fixed and with the axis parallel of the rotor, and the footpath that the scroll spring is located at all first cylindrical members is outside
Side, first cylindrical member along the radially outward direction against the scroll spring, the first connecting rod and one of them
First cylindrical member is fixed.
6. camshaft phase adjuster as claimed in claim 5, it is characterised in that the other end for defining the scroll spring is
The inner, described the inner are hooked on the side face of one of them first cylindrical member.
7. camshaft phase adjuster as claimed in claim 6, it is characterised in that the camshaft phase adjuster is also wrapped
Include：With the second cylindrical member of the axis parallel, second cylindrical member is fixed with the drive end bearing bracket, the scroll spring
The outer end is hooked on the side face of second cylindrical member.
8. camshaft phase adjuster as claimed in claim 7, it is characterised in that second cylindrical member is bolt, described
Drive end bearing bracket is bolted on the stator by described.
9. the camshaft phase adjuster as described in any one of claim 1 to 8, it is characterised in that the governor motion is located at
The radially inner side of the scroll spring outmost turns.
10. the camshaft phase adjuster as described in any one of claim 1 to 8, it is characterised in that the scroll spring is flat
Face scroll spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798693.2A CN107780990A (en) | 2016-08-31 | 2016-08-31 | Camshaft phase adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798693.2A CN107780990A (en) | 2016-08-31 | 2016-08-31 | Camshaft phase adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107780990A true CN107780990A (en) | 2018-03-09 |
Family
ID=61451707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610798693.2A Pending CN107780990A (en) | 2016-08-31 | 2016-08-31 | Camshaft phase adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107780990A (en) |
-
2016
- 2016-08-31 CN CN201610798693.2A patent/CN107780990A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |