CN204532455U - Engine cylinder head assembly - Google Patents
Engine cylinder head assembly Download PDFInfo
- Publication number
- CN204532455U CN204532455U CN201520196106.3U CN201520196106U CN204532455U CN 204532455 U CN204532455 U CN 204532455U CN 201520196106 U CN201520196106 U CN 201520196106U CN 204532455 U CN204532455 U CN 204532455U
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- CN
- China
- Prior art keywords
- rocking arm
- cylinder head
- limited part
- rocker arm
- engine cylinder
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- 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-Gear Or Valve Arrangements (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of engine cylinder head assembly, comprise cylinder head body and rocker arm assembly, the rocking arm of described rocker arm assembly has the amount of movement exited backward when air door operation, having in the terminal of this amount of movement prevents rocking arm from continuing the limit structure retreated, and limit structure at least comprises the limited part that rocking arm is arranged; The utility model amount of movement terminal that rocking arm exits when the air door operation such as adjustment valve clearance, installation, replacing carrying out air valve pad has the limited part preventing rocking arm from continuing retrogressing, and this limited part is arranged at rocking arm, the change of concrete structure or less change are not made to cylinder head body, can realize when air door operation rocking arm exit carry out spacing, ensure that not dismantling camshaft can carry out rocking arm and install fast and exit, avoid on cylinder head body, arrange the spacing setting of corresponding adaptability, save manufacture cost and cycle, and ensure cylinder head body aesthetic appearance.
Description
Technical field
The utility model relates to a kind of automotive driving system, particularly a kind of engine cylinder head assembly.
Background technique
Engine cylinder head and engine cylinder-body form cylinder jointly, for air inlet and fuel also burning formation power; Engine cylinder head, as important parts, which is provided with intake and exhaust assembly; Intake and exhaust assembly generally comprises valve stem, rocking arm and rocking arm driver part, in order to the gap adjusting inlet and exhaust valve reaches the needs meeting intake and exhaust, adjustment pad is set between valve stem and the drive point of rocking arm, and this adjustment pad needing when carrying out valve associative operation to carry out to adjust, installing, changing, reach valve intake and exhaust requirement, now need to make the drive point of rocking arm recess valve stem, after adjustment, rocking arm is reinstalled; The installation of rocking arm then needs certain installation precision, to ensure the normal operation of motor, now needs to carry out simply and easily the dismounting of rocking arm, installation and location; In prior art, have and utilize the structural change of cylinder head sidewall to carry out technological scheme that is spacing and guiding to rocking arm, but need to carry out Design and manufacture to cylinder head intrinsic single, this body profile of cylinder head is irregular, and casting manufacture process is comparatively complicated, and improves manufacture cost.
Therefore, need a kind of engine cylinder head assembly, the change of concrete structure or less change are not made to cylinder head body, realize when carrying out adjusting the air door operation such as valve clearance, installation, replacing pad rocking arm exit carry out spacing, ensure that rocking arm is installed fast and exits, save manufacture cost and cycle.
Model utility content
In view of this, the utility model provides a kind of engine cylinder head assembly, the change of concrete structure or less change are not made to cylinder head body, realize when carrying out adjusting the air door operation such as valve clearance, installation, replacing pad rocking arm exit carry out spacing, ensure that rocking arm is installed fast and exits, save manufacture cost and cycle.
Engine cylinder head assembly of the present utility model, comprise cylinder head body and rocker arm assembly, the rocking arm of described rocker arm assembly has the amount of movement exited backward when carrying out air door operation, having in the terminal of this amount of movement prevents rocking arm from continuing the limit structure retreated, and described limit structure at least comprises the limited part that rocking arm is arranged; The terminal of amount of movement refers to the limit position that rocking arm exits backward, avoids rocking arm all to exit installation position and the problem reinstalling difficulty that causes; Air door operation refers to the operation of adjustment valve clearance, installation, replacing air valve pad; Rocker arm assembly comprises intake rocker assembly and exhaust rocker arm assembly certainly, does not repeat them here; Limited part is included in the special position preventing rocking arm from too much retreating arranged on rocking arm, comprises integrated spacing preiection, position limit pin etc.; As when needs adjustment valve clearance, take off pitman arm shaft, rocking arm is retreated certain distance, exposes air valve pad, the adjustment of air valve pad, installation, replacing can be carried out, can not continue to retreat at the effect lower shake-changing arm of limit structure; Camshaft can be unloaded and just can change pad to be conducive to adjusting valve clearance, and conveniently rocking arm is installed.
Further, the mode that described rocking arm can be swung up and down by rocker arm support is arranged, and described limit structure is directly or indirectly formed by between the limited part of rocking arm and rocker arm support; Rocker arm support is and supports rocking arm and the support ensureing that rocking arm swings up and down that is rotatably assorted, and does not repeat them here; Directly formed between limited part and rocker arm support limit structure refer to directly to be formed between limited part and rocker arm support prop up spacing, indirectly formed limit structure refer between limited part and rocker arm support by other rigid elements formed prop up spacing; Swing up and down the direction referred to along switch valve and form swing; Utilize the limited part that rocking arm is formed to carry out spacing, avoid designing in the agent structure of cylinder head body, simplify the preparation process of cylinder head body.
Further, described limited part props up rocker arm support when rocking arm exits the terminal of described amount of movement backward, utilize formed between rocker arm support and rocking arm spacing, structure is simple, is easy to realize, and can adopt machining due to rocking arm, be easy to ensure limit accuracy, and replacement cost is lower.
Further, described rocker arm support comprises two journal stirrups, described rocking arm is rotatably assorted the swing pivot being supported in and being formed between two journal stirrups of rocker arm support, described limited part is corresponding with two journal stirrups two and be arranged at rocking arm both sides respectively, and described two limited parts correspondence when rocking arm exits the terminal to described amount of movement backward props up two journal stirrups; Adopt the structure swinging support rocking arm of two journal stirrups, make rocking arm monolithic stability and highi degree of accuracy action, meanwhile, utilize two journal stirrups and two limited parts that in respective rocker arm, lateral outer side is arranged, ensure whole machine balancing spacing when exiting, avoid there is deviation and the poor problem of the installation precision that causes; Further, utilize journal stirrup itself to be formed spacing, do not need to carry out the processing of spacing adaptability to cylinder head body, particularly on profile without any impact, ensure the manufacturability of cylinder head body.
Further, the surface that described cylinder head body is corresponding with rocking arm tail end is provided with supporting portion, and this supporting portion supports rocking arm when rocking arm exits backward and when returning to installation position and makes rocking arm keep setting height(from bottom); Setting height(from bottom) refer to rocking arm be installed on rocker arm support and with height when coordinating between valve stem, supporting portion has support and leading role, this structure can ensure that rocking arm can be positioned at installation position move back to mounting point again after exiting after, is beneficial to simplification installation process.
Further, described supporting portion is the projection that can support rocking arm being arranged at cylinder head body surface, and this projection can be with this body by integral forming of cylinder head or following process, install and formed, and structure is simple, is easy to realize.
Further, described projection is bar shaped along rocking arm exit axis and is protrudingly transversely set up in parallel at least two, protruding length and the length that exits of rocking arm adapt, article two, protruding structure is beneficial to and ensures that rocking arm has good leading role when exiting and return to installation position, and form stable support, meanwhile, friction when retreating and recover installation position is reduced, the smoothness of safety action.
Further, described rocking arm is the structure of the horizontal outwards bifurcated of leading portion for twin cylinder engine, and the width of rocking arm bifurcated leading portion strengthens forward gradually and the width be greater than in corresponding position between two journal stirrups of rocker arm support forms described limited part; The rocker structure of bifurcated is suitable for twin cylinder engine and uses, and only arranges a fulcrum and can realize model utility object; Utilize the width dimensions of bifurcated adjust ensure change pad time rocking arm retreat time spacing, overall structure change less, be beneficial to saving manufacture cost; Corresponding position refers to and rocking arm can be made just to be stuck between two journal stirrups in the terminal of amount of movement.
Further, described limited part is the restraining groove with front end cell wall formed in the outside of rocking arm leading portion bifurcated, and the front end cell wall of described restraining groove props up rocker arm support when rocking arm exits the terminal of described amount of movement backward; Or described limited part is the spacing preiection protruded laterally, and spacing preiection props up rocker arm support when rocking arm exits the terminal of described amount of movement backward; Form limited part (restraining groove or spacing preiection) in the outside of bifurcated and better can ensure limit accuracy, simultaneously, can the long period use and limit accuracy can not be affected, thus be beneficial to save user cost and be beneficial to and ensure installation process smooth and easy.
Further, the outer surface that cylinder head body is corresponding with rocking arm afterbody is flat construction, ensures good outward appearance and good manufacturability.
The beneficial effects of the utility model: engine cylinder head assembly of the present utility model, in the adjustment valve clearance of carrying out air valve pad, install, the amount of movement terminal that during air door operations such as replacing, rocking arm exits has the limited part preventing rocking arm from continuing retrogressing, and this limited part is arranged at rocking arm, the change of concrete structure or less change are not made to cylinder head body, can realize when air door operation rocking arm exit carry out spacing, ensure that not dismantling camshaft can carry out rocking arm and install fast and exit, avoid on cylinder head body, arrange the spacing setting of corresponding adaptability, save manufacture cost and cycle, and ensure cylinder head body aesthetic appearance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the utility model structural representation;
Fig. 2 is rocking arm side view;
Fig. 3 is rocking arm plan view;
Fig. 4 is cylinder head body plan view.
Embodiment
Fig. 1 is the utility model structural representation, Fig. 2 is rocking arm side view, Fig. 3 is rocking arm plan view, Fig. 4 is cylinder head body plan view, as shown in the figure: the engine cylinder head assembly of the present embodiment, comprises cylinder head body 1 and rocker arm assembly, the rocking arm 2 of described rocker arm assembly has the amount of movement exited backward when carrying out air door operation, having in the terminal of this amount of movement prevents rocking arm from continuing the limit structure retreated, and described limit structure at least comprises the limited part that rocking arm is arranged; The terminal of amount of movement refers to the limit position that rocking arm exits backward, avoids rocking arm all to exit installation position and the problem reinstalling difficulty that causes; Rocker arm assembly comprises intake rocker assembly and exhaust rocker arm assembly certainly, does not repeat them here; Limited part is included in the special position preventing rocking arm from too much retreating arranged on rocking arm, comprises integrated spacing preiection, position limit pin etc.; When needs adjustment valve clearance, take off pitman arm shaft, rocking arm is retreated certain distance, exposes air valve pad, the air door operation such as adjustment valve clearance, installation, replacing of air valve pad can be carried out, can not continue to retreat at the effect lower shake-changing arm of limit structure; Camshaft 3 can be unloaded and just can change pad to be conducive to adjusting valve clearance, and conveniently rocking arm is installed.
In the present embodiment, the mode that described rocking arm 2 can be swung up and down by rocker arm support 11 is arranged, and described limit structure is directly or indirectly formed by between the limited part 21 of rocking arm and rocker arm support 11; Rocker arm support 11 is and supports rocking arm 2 and the support ensureing that rocking arm swings up and down that is rotatably assorted, and does not repeat them here; Directly formed between limited part and rocker arm support limit structure refer to directly to be formed between limited part and rocker arm support prop up spacing, indirectly formed limit structure refer between limited part and rocker arm support by other rigid elements formed prop up spacing; Swing up and down the direction referred to along switch valve and form swing; Utilize the limited part that rocking arm is formed to carry out spacing, avoid designing in the agent structure of cylinder head body, simplify the preparation process of cylinder head body.
In the present embodiment, described limited part 21 props up rocker arm support 11 when rocking arm 2 exits the terminal of described amount of movement backward, utilize formed between rocker arm support 11 and rocking arm 2 spacing, structure is simple, be easy to realize, and can adopt machining due to rocking arm, be easy to ensure limit accuracy, and replacement cost is lower.
In the present embodiment, described rocker arm support 11 comprises two journal stirrups, described rocking arm 2 is rotatably assorted the swing pivot being supported in and being formed between two journal stirrups of rocker arm support, described limited part 11 is corresponding with two journal stirrups two and be arranged at rocking arm both sides respectively, and described two limited parts correspondence when rocking arm exits the terminal to described amount of movement backward props up two journal stirrups; Adopt the structure swinging support rocking arm of two journal stirrups, make rocking arm monolithic stability and highi degree of accuracy action, meanwhile, utilize two journal stirrups and two limited parts that in respective rocker arm, lateral outer side is arranged, ensure whole machine balancing spacing when exiting, avoid there is deviation and the poor problem of the installation precision that causes; Further, utilize journal stirrup itself to be formed spacing, do not need to carry out the processing of spacing adaptability to cylinder head body, particularly on profile without any impact, ensure the manufacturability of cylinder head body 1.
In the present embodiment, the surface that described cylinder head body 1 is corresponding with rocking arm 2 tail end is provided with supporting portion 12, and this supporting portion 12 supports rocking arm when rocking arm exits backward and when returning to installation position and makes rocking arm keep setting height(from bottom); Setting height(from bottom) refer to rocking arm be installed on rocker arm support and with height when coordinating between valve stem 4, supporting portion has support and leading role, this structure can ensure that rocking arm can be positioned at installation position move back to mounting point again after exiting after, is beneficial to simplification installation process.
In the present embodiment, described supporting portion 12 is for being arranged at the projection that can support rocking arm of cylinder head body surface, and this projection can be one-body molded with cylinder head body 1 or following process, install and formed, and structure is simple, is easy to realize.
In the present embodiment, described projection is bar shaped along rocking arm exit axis and is protrudingly transversely set up in parallel at least two, protruding length and the length that exits of rocking arm adapt, article two, protruding structure is beneficial to and ensures that rocking arm has good leading role when exiting and return to installation position, and form stable support, meanwhile, friction when retreating and recover installation position is reduced, the smoothness of safety action.
In the present embodiment, described rocking arm 2 is the structure of the horizontal outwards bifurcated of leading portion for twin cylinder engine, and the width of rocking arm 2 bifurcated leading portion strengthens forward gradually and the width be greater than in corresponding position between two journal stirrups of rocker arm support forms described limited part 21; Rocking arm 2 structure of bifurcated is suitable for twin cylinder engine and uses, and only arranges a fulcrum and can realize model utility object; Utilize the width dimensions of bifurcated adjust ensure change pad time rocking arm retreat time spacing, overall structure change less, be beneficial to saving manufacture cost; Corresponding position refers to and rocking arm can be made just to be stuck between two journal stirrups in the terminal of amount of movement.
In the present embodiment, described limited part 21 is the restraining groove with front end cell wall formed in the outside of rocking arm 2 leading portion bifurcated, and the front end cell wall of described restraining groove props up rocker arm support when rocking arm exits the terminal of described amount of movement backward; Or described limited part is the spacing preiection protruded laterally, and spacing preiection props up rocker arm support when rocking arm 2 exits the terminal of described amount of movement backward; Form limited part (restraining groove or spacing preiection) in the outside of bifurcated and better can ensure limit accuracy, simultaneously, can the long period use and limit accuracy can not be affected, thus be beneficial to save user cost and be beneficial to and ensure installation process smooth and easy.
In the present embodiment, the outer surface that cylinder head body 1 is corresponding with rocking arm 2 afterbody is flat construction, ensures good outward appearance and good manufacturability.
Front and back described in the utility model refer to: the orientation at the front drive point place for driving valve stem for rocking arm, after refer to the orientation at rocking arm afterbody and fulcrum place.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (10)
1. an engine cylinder head assembly, it is characterized in that: comprise cylinder head body and rocker arm assembly, the rocking arm of described rocker arm assembly has the amount of movement exited backward when carrying out air door operation, having in the terminal of this amount of movement prevents rocking arm from continuing the limit structure retreated, and described limit structure at least comprises the limited part that rocking arm is arranged.
2. engine cylinder head assembly according to claim 1, is characterized in that: the mode that described rocking arm can be swung up and down by rocker arm support is arranged, and described limit structure is directly or indirectly formed by between the limited part of rocking arm and rocker arm support.
3. engine cylinder head assembly according to claim 2, is characterized in that: described limited part props up rocker arm support when rocking arm exits the terminal of described amount of movement backward.
4. engine cylinder head assembly according to claim 3, it is characterized in that: described rocker arm support comprises two journal stirrups, described rocking arm is rotatably assorted the swing pivot being supported in and being formed between two journal stirrups of rocker arm support, described limited part is corresponding with two journal stirrups two and be arranged at rocking arm both sides respectively, and described two limited parts correspondence when rocking arm exits the terminal to described amount of movement backward props up two journal stirrups.
5. engine cylinder head assembly according to claim 1, it is characterized in that: the surface that described cylinder head body is corresponding with rocking arm tail end is provided with supporting portion, this supporting portion supports rocking arm when rocking arm exits backward and when returning to installation position and makes rocking arm keep setting height(from bottom).
6. engine cylinder head assembly according to claim 5, is characterized in that: described supporting portion is the projection that can support rocking arm being arranged at cylinder head body surface.
7. engine cylinder head assembly according to claim 6, is characterized in that: described projection is bar shaped along rocking arm exit axis and is protrudingly transversely set up in parallel at least two, and protruding length and the length that exits of rocking arm adapt.
8. engine cylinder head assembly according to claim 4, it is characterized in that: described rocking arm is the structure of the horizontal outwards bifurcated of leading portion for twin cylinder engine, and the width of rocking arm bifurcated leading portion strengthens forward gradually and the width be greater than in corresponding position between two journal stirrups of rocker arm support forms described limited part.
9. engine cylinder head assembly according to claim 8, it is characterized in that: described limited part is the restraining groove with front end cell wall formed in the outside of rocking arm leading portion bifurcated, and the front end cell wall of described restraining groove props up rocker arm support when rocking arm exits the terminal of described amount of movement backward; Or described limited part is the spacing preiection protruded laterally, and spacing preiection props up rocker arm support when rocking arm exits the terminal of described amount of movement backward.
10. engine cylinder head assembly according to claim 1, is characterized in that: the outer surface that cylinder head body is corresponding with rocking arm afterbody is flat construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520196106.3U CN204532455U (en) | 2015-04-02 | 2015-04-02 | Engine cylinder head assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520196106.3U CN204532455U (en) | 2015-04-02 | 2015-04-02 | Engine cylinder head assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532455U true CN204532455U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520196106.3U Expired - Fee Related CN204532455U (en) | 2015-04-02 | 2015-04-02 | Engine cylinder head assembly |
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| CN (1) | CN204532455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791035A (en) * | 2015-04-02 | 2015-07-22 | 重庆隆鑫发动机有限公司 | Cylinder head assembly for engine rocker arm limiting |
-
2015
- 2015-04-02 CN CN201520196106.3U patent/CN204532455U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791035A (en) * | 2015-04-02 | 2015-07-22 | 重庆隆鑫发动机有限公司 | Cylinder head assembly for engine rocker arm limiting |
| CN104791035B (en) * | 2015-04-02 | 2017-05-31 | 重庆隆鑫发动机有限公司 | The spacing cylinder head assembly of engine rocker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |