CN207701189U - VVT shutdown return spring mechanisms - Google Patents
VVT shutdown return spring mechanisms Download PDFInfo
- Publication number
- CN207701189U CN207701189U CN201721428843.7U CN201721428843U CN207701189U CN 207701189 U CN207701189 U CN 207701189U CN 201721428843 U CN201721428843 U CN 201721428843U CN 207701189 U CN207701189 U CN 207701189U
- Authority
- CN
- China
- Prior art keywords
- rotor
- return spring
- bushing
- vvt
- hook
- 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.)
- Expired - Fee Related
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- Valve Device For Special Equipments (AREA)
Abstract
For VVT with return spring mechanism is shut down, it is related to a kind of improvement of automobile VVT engine auxiliary spare parts, and in particular to a kind of VVT shutdown return spring mechanisms.It includes cover board, rotor bushing, return spring, rotor, shell, positioning pin, and rotor is connected firmly together with rotor bushing by interference fit, and rotor passes through positioning pin stationary positioned with rotor bushing；Cover board is tightened together with shell by several bolts；It is provided with the first limit use on cover board, the second limit is provided on rotor bushing.The interior hook of return spring mechanism described in the utility model is hung on rotor bushing always, and when rotor is from centre position to when the start of delay angle side, outer hook is limited by shell boss, and rotor bushing drives the interior hook of return spring to rotate counterclockwise；When rotor is from centre position to when advance angle side start, rotor bushing outer rim boss drives the outer hook of spring to be rotated clockwise with rotor, because hook is all moved with rotor inside and outside rotor, rotor is not acted on by spring.
Description
Technical field
The utility model is related to a kind of improvement of automobile VVT engine auxiliary spare parts, and in particular to a kind of VVT is with stopping
Machine return spring mechanism.
Background technology
VVT-i engines are the english abbreviations of the intelligent alterable valve timing system of Toyota Company.Toyota's sedan-chair of latest version
The engine of vehicle is generally mounted with VVT-i systems.Its operation principle is：When engine is from low speed to high-speed transitions, electricity
Machine oil is just automatically pressed to the small turbine in admission cam shaft driving gear by sub- computer.
VVT engines at present are required for rotor return, common VVT not to have so-called intermediate locking when engine is shut down
Position, when shutdown, is returned directly to most delay angle or most into angle, relatively simple.When intermediate locking VVT is shut down, rotor is from delay angle side
Camshaft active force return is utilized when returning to intermediate lock position, is equivalent to the return mode of air inlet VVT；Rotor is returned from advance angle side
To when intermediate lock position utilize T springs>The convex returns of T are equivalent to exhaust VVT return modes.
Chinese patent ZL201210177766.8 discloses a kind of valve timing change device, and when shutdown, rotor is from into angle
Side returns to intermediate lock position；The form of compression spring is made in return spring by intermediate locking VVT, the delay angle side of shell is mounted in, when stopping
When machine, if rotor is in the delay angle side of intermediate lock position, return spring works；If rotor is in intermediate lock position
When advance angle side, return spring does not work.The initial position of rotor of intermediate locking VVT be most between angle and most delay angle, when
VVT rotors need to return to initial position when engine is shut down.
The also patent of the other company's applications of some Japan, the structure of these patents is relative complex, and actually uses effect
Fruit is poor.
Utility model content
The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, a kind of VVT shutdown return bullets are provided
Spring mechanism, it has many advantages, such as, and simple in structure, return effect is good, return is stablized.
To achieve the above object, the utility model is using following technical scheme：It includes cover board 1, rotor bushing 2, returns
Position spring 3, rotor 4, shell 5, positioning pin 6, rotor 4 and rotor bushing 2 are connected firmly together by interference fit, rotor 4 with turn
Sub- bushing 2 passes through 6 stationary positioned of positioning pin；Cover board 1 is tightened together with shell 5 by several bolts；Is provided on cover board 1
One limit 11 is used, and the second limit 12 is provided on rotor bushing 2.
The return spring 3 is provided with outer hook 31 and interior hook 32, and on cover board 1,32 clasp joint of interior hook exists 31 clasp joint of outer hook
On rotor bushing 2.
When rotor 4 is from intermediate lock position start, the outer hook of limit return spring；, rotor is used for from intermediate lock position
To when advance angle side start, hook outside return spring is limited.
The utility model is used for intermediate locking VVT5, and when engine is shut down, VVT5 inner rotators 4 return to initial position；When
When engine is shut down, when VVT rotors 4 are in the delay angle side of intermediate locking, rotor 4 is pulled to return to medium lock by return spring 3
Stop bit is set；When engine is shut down, when VVT rotors 4 are in the advance angle side of intermediate locking, 3 pulling force of return spring does not work, this
When pass through camshaft active force return.
The mechanism is divided into two sections of strokes, i.e.,：A trip be advance angle side to intermediate lock position when, not by spring masterpiece
With；Another a trip is delay angle position to spring-loaded when intermediate lock position.
The interior hook 32 of 3 mechanism of return spring described in the utility model is hung over always on rotor bushing 2, when rotor 4 is by centre
To when the start of delay angle side, outer hook 31 is limited by 5 boss of shell for position, and rotor bushing 2 drives the interior hook 32 of return spring 3 to do the inverse time
Needle rotates；When rotor is from centre position to when advance angle side start, rotor bushing outer rim boss drives the outer hook of spring with rotor
It rotates clockwise, because hook is all moved with rotor inside and outside rotor, rotor is not acted on by spring.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sectional view along A-A of Fig. 1；
Fig. 3 is the structural schematic diagram when engine off condition；
Fig. 4 be a trip be advance angle side to intermediate lock position when structural schematic diagram；
Fig. 5 be another a trip be delay angle position to intermediate lock position when structural schematic diagram.
Reference sign：Cover board 1, rotor bushing 2, return spring 3, rotor 4, shell 5, positioning pin 6, first limit
11, the second limit 12, outer hook 31, interior hook 32.
Specific implementation mode
Shown in Fig. 1-Fig. 5, present embodiment the technical solution adopted is that：It include cover board 1, rotor bushing 2,
Return spring 3, rotor 4, shell 5, positioning pin 6, rotor 4 and rotor bushing 2 are connected firmly together by interference fit, rotor 4 with
Rotor bushing 2 passes through 6 stationary positioned of positioning pin；Cover board 1 is tightened together with shell 5 by several bolts；It is arranged on cover board 1
There is the first limit 11 use, the second limit 12 is provided on rotor bushing 2.
The return spring 3 is provided with outer hook 31 and interior hook 32, and on cover board 1,32 clasp joint of interior hook exists 31 clasp joint of outer hook
On rotor bushing 2.
When rotor 4 is from intermediate lock position start, the outer hook of limit return spring；, rotor is used for from intermediate lock position
To when advance angle side start, hook outside return spring is limited.
The utility model is used for intermediate locking VVT5, and when engine is shut down, VVT5 inner rotators 4 return to initial position, ginseng
Examine Fig. 1；When engine is shut down, when VVT rotors 4 are in the delay angle side of intermediate locking, rotor 4 is pulled to return by return spring 3
To intermediate lock position, with reference to figure 2；When engine is shut down, when VVT rotors 4 are in the advance angle side of intermediate locking, return bullet
3 pulling force of spring does not work, and such as Fig. 3, passes through camshaft active force return at this time.
The mechanism is divided into two sections of strokes, i.e.,：A trip be advance angle side to intermediate lock position when, not by spring masterpiece
With；Another a trip is delay angle position to spring-loaded when intermediate lock position.
The interior hook 32 of 3 mechanism of return spring described in the utility model is hung over always on rotor bushing 2, when rotor 4 is by centre
To when the start of delay angle side, outer hook 31 is limited by 5 boss of shell for position, and rotor bushing 2 drives the interior hook 32 of return spring 3 to do the inverse time
Needle rotates；When rotor is from centre position to when advance angle side start, rotor bushing outer rim boss drives the outer hook of spring with rotor
It rotates clockwise, because hook is all moved with rotor inside and outside rotor, rotor is not acted on by spring.
The above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple
The other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model
Spirit and scope should all cover in the right of the utility model.
Claims (2)
1.VVT shutdown return spring mechanisms, it is characterised in that：It include cover board (1), rotor bushing (2), return spring (3),
Rotor (4), shell (5), positioning pin (6), rotor (4) are connected firmly together with rotor bushing (2) by interference fit, rotor (4)
Pass through positioning pin (6) stationary positioned with rotor bushing (2)；Cover board (1) is tightened together with shell (5) by several bolts；Lid
It is provided with the first limit (11) on plate (1), the second limit (12) is provided on rotor bushing (2).
2. VVT according to claim 1 shutdown return spring mechanisms, it is characterised in that：The return spring (3) is set
It is equipped with outer hook (31) and interior hook (32), outer hook (31) clasp joint is on cover board (1), and interior hook (32) clasp joint is on rotor bushing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721428843.7U CN207701189U (en) | 2017-10-31 | 2017-10-31 | VVT shutdown return spring mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721428843.7U CN207701189U (en) | 2017-10-31 | 2017-10-31 | VVT shutdown return spring mechanisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701189U true CN207701189U (en) | 2018-08-07 |
Family
ID=63021800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721428843.7U Expired - Fee Related CN207701189U (en) | 2017-10-31 | 2017-10-31 | VVT shutdown return spring mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701189U (en) |
-
2017
- 2017-10-31 CN CN201721428843.7U patent/CN207701189U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 Termination date: 20201031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |