CN202300557U - Engine cam disk - Google Patents
Engine cam disk Download PDFInfo
- Publication number
- CN202300557U CN202300557U CN 201120382404 CN201120382404U CN202300557U CN 202300557 U CN202300557 U CN 202300557U CN 201120382404 CN201120382404 CN 201120382404 CN 201120382404 U CN201120382404 U CN 201120382404U CN 202300557 U CN202300557 U CN 202300557U
- Authority
- CN
- China
- Prior art keywords
- cam
- disk
- disk body
- bulge loop
- motor according
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses an engine cam disk, comprising a disk body (1), wherein a shaft installation hole (2) is arranged in the center position of the disk body (1); at least one front cam (4) and at least one rear cam (5) are radially arranged on the circumference of the disk body (1) at intervals; and the front cam (4) and the rear cam (5) are axially arranged from front to back in a staggered manner. According to the engine cam disk disclosed by the utility model, by the adoption of a cam disk structure, a front row of cams and a rear row of cams of the cam disk are arranged closely, so that a cam shaft is unnecessary to arrange, therefore the axial size of an engine is largely shortened; when a cylinder number is increased, the engine size cannot be changed obviously; and the cam disk can be processed and formed integrally, so that the processing difficulty is largely reduced, and the technology is relatively simple.
Description
Technical field
The utility model relates to engine art, especially, relates to a kind of engine cam dish.
Background technique
At present, what the distribution device of most of reciprocating engine was equipped with all is camshaft, and underneath camshaft, up-set type camshaft are arranged.What existing level opposed type piston aeroengine adopted is the overhead cam structure, and camshaft is forged by chromium nickel steel and forms, and is one-piece camshaft.The camshaft front end has a drive speed adjustor gear, and there are 9 cams the centre, wherein 6 exhaust cams and 3 intake cams, and there is a driving cam shaftgear rear end.In 4 support holes of crankshaft installed on left and right casing; Through crankshaft gear and left intermediate gear drives, its sense of rotation and bent axle are opposite by bent axle for camshaft.Port timing need not adjusted, and when motor assembled, camshaft, left intermediate gear and crankshaft gear dashed the specified value that the assembling of some special marker can meet the engines distribution phase place by the increment face respectively.Existing camshaft structure, camshaft and bent axle apart from each other generally need drive with the high speed Transmitted chains of precision, will adopt suitable chain guide device and tension device simultaneously, and driving mechanism is complicated.Because cam of two common uses of cylinder, the cylinder number is many more, and the axial dimension of camshaft is big more.
The model utility content
The utility model purpose is to provide a kind of engine cam dish, to solve the technical problem that the available engine axial dimension is excessive, the camshaft difficulty of processing is big.
For realizing above-mentioned purpose, the utility model provides a kind of engine cam dish, comprises disk body, and the center of disk body is provided with a mounting hole; The circumferential compartment of terrain of the periphery upper edge disk body of disk body is provided with at least one front cam and at least one back cam; Front cam and back cam axially are staggered front to back setting along disk body.
Further, disk body upper edge cam disk axially be provided with bulge loop, back cam forms from the radially extension of the periphery upper edge bulge loop of bulge loop.
Further, the middle part of disk body axially convexes with chimb along disk body, and chimb threaded shaft mounting hole is provided with.
Further, the inner ring surface of bulge loop is provided with the internal tooth of the little gear ring engagement of taking turns with the branch gas bidentate of motor; Be provided with carburized case on the wheel face of the wheel face of internal tooth, front cam and back cam.
Further, the periphery of disk body circumferentially is provided with four front cam equally spacedly along disk body, the outer ring surface upper edge bulge loop of bulge loop radially be provided with four equally spacedly after cam, the setting of staggering each other of front cam and back cam with staggering.
Further, front cam is the envelope profile with the wheel profile of back cam.
Further, disk body is provided with at least one lightening hole and at least one peep hole, and lightening hole and peep hole all are arranged on the disk body.
Further, disk body circumferentially be provided with four, six, eight or 12 lightening holes, these four, six, eight or 12 lightening holes are along the circumferential spaced set of disk body.
Further, be provided with bronze bushing in the axle mounting hole.
Further, the cam disk of motor is an alloy steel forging.
The utlity model has following beneficial effect:
1, the utility model adopts the cam disk structure, and forward and backward two row's cams of this cam disk need not to be provided with camshaft near setting, have shortened the axial dimension of motor so greatly, and when the cylinder number increased, size of engine did not have significant change.
2, the utility model cam disk can whole machine shaping, makes difficulty of processing reduce greatly, and technology is simple relatively.
3, it is long and cause the cylindricity conformity difficulty of straightness accuracy and cam of camshaft big that the utility model cam disk can overcome camshaft.
4, the cam disk of the utility model is because two dish each four or a plurality of cams before and after being processed with, and making can the shared cam disk of a plurality of cylinders, significantly reduced the number of spare parts of motor, and structure is simpler.
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the engine cam dish plan view schematic representation of the utility model preferred embodiment; And
Fig. 2 be among the utility model Fig. 1 A-A to schematic representation.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1 and Fig. 2; A kind of engine cam dish; Comprise circular disk body 1, be provided with a mounting hole 2 in the center of disk body 1, the middle part of disk body 1 is around the chimb 21 that axially be extended with annular of axle mounting hole 2 along disk body 1; It is better to make that cam disk is assembled the back steadiness, particularly can prevent twisting.Preferably, this engine cam dish is an alloy steel forging, has guaranteed the hardness and the intensity of cam disk widely.Preferably, be provided with bronze bushing 8 in the axle mounting hole 2, this bronze bushing 8 and axle mounting hole 2 interference assembling make bronze bushing 8 and axle mounting hole 2 rotate synchronously all the time.Bronze bushing 8 is set has strengthened the wear-resisting property of axle mounting hole 2 greatly, thereby prolonged the working life of cam disk.
The periphery of disk body 1 axially is provided with bulge loop 3 along disk body 1, and this bulge loop 3 and annular nib 21 are positioned at the same side of the card of disk body 1.The length along the axial direction of disk body 1 along the length of the axial direction of disk body 1 and annular nib 21 of this bulge loop 3 is identical, perhaps bulge loop 3 along the length of the axial direction of disk body 1 length along the axial direction of disk body 1 less than annular nib 21.The inner ring surface of bulge loop 3 is provided with internal tooth 31, and after the assembling, this internal tooth 31 meshes with the little gear ring of the branch gas bidentate wheel of motor.Preferably, this internal tooth 31 is provided with carburized case, makes that internal tooth 31 is more wear-resisting and transmission performance is more excellent.
The periphery of disk body 1 along disk body 1 radially be provided with at least one front cam 4 and at least one back cam 5, this front cam 4 is provided with in the axial front and back of disk body 1 periphery along disk body 1 with back cam 5.Like this, front cam 4 and back cam 5 are equivalent to the cam at the two ends of camshaft, and being provided with of cam disk omitted camshaft, thereby have shortened the distance between the cam.Preferably, along the extending radially out of disk body 1, along the extending radially out of bulge loop 3, front cam 4 leaves the gap with back cam 5 to back cam 5 to front cam 4 in the axial direction by the outer ring surface of bulge loop 3 by the edge of disk body 1.Like this, make and can not collide each other in the course of the work with front cam 4 and back cam 5 contacted members respectively.Preferably, in other embodiments, cam disk can be close to be provided with and constitute by two disk bodies 1, and the cam of each disk body 1 is interlaced, with front cam 4 and the back cam 5 that forms interlaced arrangement.Preferably, the periphery of disk body 1 radially is provided with four front cam 4 equally spacedly along disk body 1, the outer ring surface upper edge bulge loop 3 of bulge loop 3 radially be provided with four equally spacedly after cam 5, cam 5 is provided with each other with staggering behind these four front cam 4 and four.More preferably, front cam 4 is the envelope profile of the tappet pulley external diameter movement locus of motor with the wheel profile of back cam 5.Like this, other member is always saturated with front cam 4 wheel faces with back cam 5 wheel faces in the course of the work and contacts.Preferably, the wheel face of front cam 4 is provided with carburized case with the wheel face of back cam 5, make that the wheel face of front cam 4 is more wear-resisting with the wheel face of back cam 5, and degree of finish is higher.
Disk body 1 circumferentially be provided with at least one lightening hole 6, lightening hole 6 be arranged on a mounting hole 2 and bulge loop 3 radially in the middle of, alleviated the deadweight of cam disk greatly, thereby alleviated the deadweight of motor.Preferably, disk body 1 upper edge disk body 1 circumferentially be provided with four, six, eight or 12 lightening holes 6, these four, six, eight or 12 lightening holes 6 are along circumferential spaced sets.According to the requirement of strength of cam disk the quantity of lightening hole 6 is set suitably, makes the intensity of cam disk and deadweight reach Optimum Matching; And spaced set makes the center of cam disk be positioned at the geometrical center of this cam disk all the time, the torsional moment loss when having avoided the cam disk rotation like this.Disk body 1 is provided with at least one peep hole 7, and peep hole 7 is arranged on the radially middle of a mounting hole 2 and bulge loop 3.Peep hole 7 is set checks whether the mounting point of cam disk and driving gear is correct.
When crankshaft rotating, cam disk becomes counterrotating through the drive of driving mechanism with bent axle, because the effect of cam type surface promotes tappet, push rod and rocking arm, active force is passed on the valve stem, and the compression valve spring is opened intake valve or exhaust valve; When cam disk turns over certain angle, the tappet pulley does not receive the ejection of cam type surface to do the time spent, and the inlet and outlet door just receives the elastic force effect and closes.The size of cam type surface is determining perdurabgility and the travel values that valve is opened, and the distribution distance between cam is determining the perdurabgility of valve-closing.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
1. the cam disk of a motor is characterized in that, comprising:
Disk body (1), the center of said disk body (1) is provided with a mounting hole (2);
The circumferential compartment of terrain of the said disk body in periphery upper edge (1) of said disk body (1) is provided with at least one front cam (4) and at least one back cam (5);
Said front cam (4) and said back cam (5) axially are staggered front to back setting along said disk body (1).
2. the cam disk of motor according to claim 1 is characterized in that,
The said cam disk in said disk body (1) upper edge axially be provided with bulge loop (3), said back cam (5) forms from the radially extension of the said bulge loop in periphery upper edge (3) of said bulge loop (3).
3. the cam disk of motor according to claim 2 is characterized in that,
The middle part of said disk body (1) axially convexes with chimb (21) along said disk body (1), and said chimb (21) is provided with around said axle mounting hole (2).
4. the cam disk of motor according to claim 3 is characterized in that,
The inner ring surface of said bulge loop (3) is provided with the internal tooth (31) of the little gear ring engagement of taking turns with the branch gas bidentate of said motor;
Be provided with carburized case on the wheel face of the wheel face of said internal tooth (31), said front cam (4) and said back cam (5).
5. the cam disk of motor according to claim 1 is characterized in that,
The periphery of said disk body (1) circumferentially is provided with four said front cam (4) equally spacedly along said disk body (1); The said bulge loop in outer ring surface upper edge (3) of said bulge loop (3) radially be provided with four said back cams (5), said front cam (4) and said back cam (5) setting each other equally spacedly with staggering.
6. the cam disk of motor according to claim 5 is characterized in that,
The wheel profile of said front cam (4) and said back cam (5) is the envelope profile.
7. engine cam dish according to claim 1 is characterized in that,
Said disk body (1) is provided with at least one lightening hole (6) and at least one peep hole (7), and said lightening hole (6) and said peep hole (7) all are arranged on the said disk body (1).
8. the cam disk of motor according to claim 7 is characterized in that,
Said disk body (1) circumferentially be provided with four, six, eight or 12 said lightening holes (6), these four, six, eight or 12 said lightening holes (6) are along the circumferential spaced set of said disk bodies (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120382404 CN202300557U (en) | 2011-10-10 | 2011-10-10 | Engine cam disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120382404 CN202300557U (en) | 2011-10-10 | 2011-10-10 | Engine cam disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300557U true CN202300557U (en) | 2012-07-04 |
Family
ID=46369479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120382404 Withdrawn - After Issue CN202300557U (en) | 2011-10-10 | 2011-10-10 | Engine cam disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392707A (en) * | 2011-10-10 | 2012-03-28 | 中国南方航空工业(集团)有限公司 | Cam plate of engine |
-
2011
- 2011-10-10 CN CN 201120382404 patent/CN202300557U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392707A (en) * | 2011-10-10 | 2012-03-28 | 中国南方航空工业(集团)有限公司 | Cam plate of engine |
| CN102392707B (en) * | 2011-10-10 | 2014-02-12 | 中国南方航空工业(集团)有限公司 | Cam plate of engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6591713B2 (en) | Modular camshaft assembly | |
| CN107580649B (en) | Rocker arm assembly for use in a valve train of a cylinder head of an internal combustion engine | |
| CN102392707B (en) | Cam plate of engine | |
| CN202732015U (en) | Overhead camshaft cylinder cover | |
| CN103711537A (en) | Camshaft | |
| CN202300557U (en) | Engine cam disk | |
| CN204126681U (en) | A kind of assembled camshaft | |
| KR101250601B1 (en) | Scissors gear for automobile | |
| CN101363334B (en) | Admission cam shaft structure | |
| CN202832688U (en) | Cam structure of engine | |
| CN201269116Y (en) | Admission cam shaft of car engine | |
| CN210217853U (en) | Air inlet cam, air inlet cam shaft assembly, engine and automobile | |
| CN203978608U (en) | Asynchronous twin cylinder engine | |
| CN220955745U (en) | Diesel engine camshaft structure capable of effectively reducing noise | |
| CN107387190B (en) | Swing type variable valve driving device | |
| CN2627233Y (en) | Tappet unit with locating slot and without ferrule | |
| CN220134043U (en) | Diesel engine assembly for reducing carbon emissions | |
| CN201269110Y (en) | Exhaust cam shaft of car engine | |
| CN105804821B (en) | VVL camshaft structures | |
| CN219431904U (en) | Micron-sized air inlet cam with circulation | |
| CN102032008A (en) | Gas distribution mechanism of gasoline engine | |
| CN217177183U (en) | Camshaft bearing seat | |
| CN214303978U (en) | Improved end cover reset spring space control structure | |
| CN202833951U (en) | Exhaust timing gear noise reduction device | |
| CN220769563U (en) | Valve mechanism, engine and motorcycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20140212 |
|
| RGAV | Abandon patent right to avoid regrant |