CN103603743A - Crankcase structure of engine - Google Patents
Crankcase structure of engine Download PDFInfo
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- CN103603743A CN103603743A CN201310498639.2A CN201310498639A CN103603743A CN 103603743 A CN103603743 A CN 103603743A CN 201310498639 A CN201310498639 A CN 201310498639A CN 103603743 A CN103603743 A CN 103603743A
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- chamber
- case lid
- mould assembling
- hole
- casing
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- Lubrication Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a crankcase structure of an engine. The crankcase structure of the engine comprises a case body, and one side of the case body is opened. The crankcase structure of the engine further comprises a case cover, and the case cover is connected with the case body in a sealing mode and used for sealing and covering an opening. The case body and the case cover define an inner cavity, a partition board which divides the inner cavity into two parts is arranged inside the case body, the partition board is connected with the inner side wall of the case body and is connected with the case cover in a sealing mode, a crankcase chamber is formed between the upper wall of the case body and the partition board, a lubricating oil chamber is formed between the lower wall of the case body and the partition board, and the crankcase chamber and the lubricating oil chamber are communicated. By dividing the inner cavity of the case body into two parts of the crankcase chamber and the lubricating oil chamber through the partition board, the crankcase structure of the engine is simple in structure and facilitates the communication between the crankcase chamber and the lubricating oil chamber.
Description
Technical field
The present invention relates to a kind of engine crankshaft box structure.
Background technique
Crankcase body and the case lid of the general gasoline engines widely using at present mainly contain two kinds of situations: the first is that crankcase chamber and oil chamber are same chamber, the problem of its existence is that lubricant oil can form larger resistance when crankshaft rotating, thereby can reduce the output power of engine, especially for the engine of high rotating speed, multi-faceted work, influence degree is larger; The second is that crankcase chamber and oil chamber separate completely, and lubricant oil need be by complicated oil duct from oil chamber's inlet and outlet crankcase chamber, and complex structure, cost are high.
Summary of the invention
Problem to be solved by this invention is to provide a kind of engine crankshaft box structure, has crankcase chamber and oil chamber separately, is convenient to the connection of crankcase chamber and oil chamber, simple in structure, cost is low.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme: a kind of engine crankshaft box structure, comprise casing, one side of described casing is uncovered, also comprise and be connected the uncovered case lid of capping with box sealing, described casing and case lid surround inner chamber, in described casing, be provided with the dividing plate that inner chamber is divided into two, described dividing plate is connected with the madial wall of casing and is tightly connected with case lid, it between the upper wall of casing and dividing plate, is crankcase chamber, between the lower wall of casing and dividing plate, be oil chamber, between described crankcase chamber and oil chamber, be communicated with.By dividing plate, the inner chamber of casing is divided into two into crankcase chamber and oil chamber, simple in structure, be convenient to the connection of crankcase chamber and oil chamber.
Improved, between described crankcase chamber and oil chamber, by passage one, passage two, be communicated with, described passage one is near case lid setting or be arranged at case lid, and described passage two is away from case lid setting.By arranging of passage one and passage two, guarantee entering or discharging of lubricant oil in crankcase.
Improved, described passage one is for to be located at dividing plate near the through hole one of case lid one side; Or described passage one is for being located at the through hole two in case lid.Simple in structure, substituted the oil duct of complexity in prior art.
Improved, described passage two is for to be located at dividing plate away from the through hole three of case lid one side; Or described passage two is for to be located on casing away from the through hole four in the sidewall of case lid one side; Or described passage two comprises and casing being communicated with chamber, being located at and being communicated with crankcase chamber on wall box and being communicated with the through hole five of chamber and being located at the through hole six that is communicated with crankcase chamber on wall box and is communicated with chamber away from the adjacent setting of case lid one side.Simple in structure, substituted the oil duct of complexity in prior art.
Improved, described through hole one, end one, through hole three, end three, through hole five all exceed the lowest part setting of crankcase chamber.Lubricant oil in crankcase chamber can not discharged completely.
Improved, described case lid has the outer mould assembling face coordinating with box sealing and the interior mould assembling face being sealed and matched with dividing plate.The setting of outer mould assembling face and interior mould assembling face is convenient to the assembling of case lid and casing and is guaranteed being sealed and matched of case lid and casing.
Improved, between described casing and case lid, be provided with mould assembling sealing gasket, described mould assembling sealing gasket comprises the outer mould assembling sealed department arranging along outer mould assembling face and the interior mould assembling sealed department arranging along interior mould assembling face.By mould assembling sealing gasket, guarantee being sealed and matched of case lid and casing.
Improved, between described outer mould assembling sealed department and interior mould assembling sealed department, be provided with stiffening rib, one end of described stiffening rib is connected with the lower end of outer mould assembling sealed department, and the other end of described stiffening rib is connected with the lower end of interior mould assembling sealed department.Guarantee the structural strength of mould assembling sealing gasket, not fragile.
Improved, described outer mould assembling sealed department, interior mould assembling sealed department and stiffening rib are structure as a whole.Make the good seal performance of mould assembling sealing gasket.
Beneficial effect:
Adopt after technique scheme, this invents a kind of engine crankshaft box structure, by dividing plate, the inner chamber of casing is divided into two into crankcase chamber and oil chamber, simple in structure, be convenient to the connection of crankcase chamber and oil chamber, guarantee entering or discharging of lubricant oil in crankcase chamber, simplified oil duct of the prior art and assembly technology, reduce number of spare parts, cost is low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Fig. 1 is explosive view of the present invention;
Fig. 2 is embodiment one structural representation;
Fig. 3 is the structural representation of casing in embodiment one;
Fig. 4 is the structural representation of case lid in embodiment one;
Fig. 5 is the structural representation of mould assembling sealing gasket in embodiment one;
Fig. 6 is the structural representation of embodiment one working condition one;
Fig. 7 is the structural representation of embodiment one working condition two;
Fig. 8 is the structural representation of embodiment one working condition three;
Fig. 9 is embodiment two structural representation;
Figure 10 is embodiment three structural representation;
Figure 11 is embodiment four structural representation.
Embodiment
Embodiment one:
As shown in Figures 1 to 5, a kind of engine crankshaft box structure, comprise casing 1, one side of described casing, uncovered, also comprise and be connected the uncovered case lid of capping 2 with box sealing, described casing and case lid surround inner chamber, in described casing, be provided with the dividing plate 11 that inner chamber is divided into two, described dividing plate is connected with the madial wall of casing and is tightly connected with case lid, it between the upper wall of casing and dividing plate, is crankcase chamber 3, it between the lower wall of casing and dividing plate, is oil chamber 4, between described crankcase chamber and oil chamber, pass through passage one, passage two is communicated with, described passage one is near case lid setting or be arranged at case lid, described passage two is away from case lid setting.Described case lid has the outer mould assembling face 21 coordinating with box sealing and the interior mould assembling face 22 coordinating with dividing plate end face seal, between described casing and case lid, be provided with mould assembling sealing gasket 6, described mould assembling sealing gasket comprises the outer mould assembling sealed department 61 arranging along outer mould assembling face and the interior mould assembling sealed department 62 arranging along interior mould assembling face, between described outer mould assembling sealed department and interior mould assembling sealed department, be provided with stiffening rib 63, one end of described stiffening rib is connected with the lower end of outer mould assembling sealed department, the other end of described stiffening rib is connected with the lower end of interior mould assembling sealed department, described outer mould assembling sealed department, interior mould assembling sealed department and stiffening rib are structure as a whole.
Described passage one is for to be located at dividing plate near the through hole 1 of case lid one side, described passage two comprises with casing and to be communicated with chamber 7 away from the adjacent setting of case lid one side, be located on wall box and be communicated with crankcase chamber and be communicated with the through hole 5 55 of chamber and be located at the through hole 6 56 that is communicated with crankcase chamber and connection chamber on wall box, described through hole one and through hole six exceed the lowest part setting of crankcase chamber, in order to make through hole one exceed the lowest part setting of crankcase chamber, the bottom of described dividing plate is made as arc plate, the arc section of described arc plate is perpendicular to the installation direction of the relative crankcase chamber of bent axle, described through hole one departs from the lowest part setting of arc plate, generally, described connection chamber is cam chamber.
Working condition one:
As shown in Figure 6, during engine work, be horizontal: lubricant oil 8 can pass in and out crankcase chamber from both direction, first direction is by through hole 1, the high pressure that the negative pressure Er Cong oil chamber that lubricant oil causes in crankcase chamber according to piston stroking upward enters crankcase chamber, cause in crankcase chamber according to descent of piston and be discharged to oil chamber from crankcase chamber; Second direction is that lubricant oil is first by through hole 6 56, from oil chamber, enter cam chamber, the lubricant oil in cam chamber according to piston stroking upward, descendingly in crankcase chamber, cause negative pressure or high pressure via through holes 5 55 and be inhaled into crankcase chamber or be discharged in cam chamber from crankcase chamber.Because the position of through hole one and through hole five is all higher than the lowest part of crankcase chamber, therefore lubricant oil can be discharged to oil chamber or cam chamber completely, therefore in the working procedure of the inherent engine of crankcase chamber, remain a certain amount of lubricant oil, and because the lubricants capacity of crankcase chamber is relatively on the low side, guaranteeing under the prerequisite of crankcase chamber proper lubrication like this, also relatively reduced the resistance of lubricant oil for crankshaft operation, reduced the power loss of engine simultaneously.
Working condition two:
As shown in Figure 7, position in turning forward during engine work: lubricant oil 8 is first by through hole 6 56, from oil chamber, enter cam chamber, the lubricant oil in cam chamber according to piston stroking upward, descendingly in crankcase chamber, cause negative pressure or high pressure and be inhaled into crankcase chamber or be discharged in cam chamber from crankcase chamber.Now because through hole one 51 places do not have lubricant oil or lubricant oil seldom, therefore resistance is little, high pressure air is known from experience preferentially from discharging here, play the effect of pressure release, the lubricants capacity that through hole 5 55 places are discharged from is so relatively on the low side, simultaneously because the position of through hole five higher than the lowest part of crankcase chamber, therefore lubricant oil can be discharged to cam chamber completely, therefore in the working procedure of the inherent engine of crankcase chamber, remain a certain amount of lubricant oil, and because the lubricants capacity of crankcase chamber is relatively on the low side, guaranteeing under the prerequisite of crankcase chamber proper lubrication like this, also relatively reduced the resistance of lubricant oil for crankshaft operation simultaneously, reduced the power loss of engine.
Working condition three:
As shown in Figure 8, in engine when work, is in sweptback position: lubricant oil 8 is by through hole 1, the high pressure that the negative pressure Er Cong oil chamber causing in crankcase chamber according to piston stroking upward enters crankcase chamber, cause in crankcase chamber according to descent of piston and be rejected to oil chamber from crankcase chamber.Because the resistance that the residing position of described through hole 5 55 does not have lubricant oil to stop causes, can preferentially discharge the pressurized gas of crankcase chamber, play pressure release effect, simultaneously because the position of through hole one higher than the lowest part of crankcase chamber, therefore lubricant oil can not be discharged to oil chamber from through hole one completely because of high pressure, in the working procedure of the inherent engine in oil chamber, still can keep a certain amount of lubricant oil thus, and because the lubricants capacity of crankcase chamber is relatively on the low side, guaranteeing under the prerequisite of crankcase chamber proper lubrication like this, also relatively reduced the resistance of lubricant oil for crankshaft operation simultaneously, reduced the power loss of engine.
Embodiment two:
As shown in Figure 9, the present embodiment and embodiment's one difference is, described passage one is for to be located at dividing plate near the through hole 1 of case lid one side, described passage two is for to be located at dividing plate away from the through hole 3 53 of case lid one side, described through hole one, through hole three exceed the lowest part setting of crankcase chamber, in order to make through hole one, through hole three exceed the lowest part setting of crankcase chamber, the bottom of described dividing plate is made as arc plate, the arc section of described arc plate is perpendicular to the installation direction of the relative crankcase chamber of bent axle, and described through hole one and through hole three all depart from the lowest part setting of arc plate.
Embodiment three:
As shown in figure 10, the present embodiment and embodiment one, embodiment's two difference is, described passage one is for to be located at dividing plate near the through hole 1 of case lid one side, described passage two is for to be located on casing away from the through hole 4 54 in the sidewall of case lid one side, described through hole four comprises the end four of San,Yu oil chamber, the end connection being communicated with crankcase chamber and the intermediate portion two that is communicated with San He end, end four, and described through hole one and end three exceed the lowest part setting of crankcase chamber.
Embodiment four:
As shown in figure 11, the present embodiment and embodiment one, embodiment two, embodiment three difference is, described passage one is for being located at the through hole 2 52 in case lid, described through hole two comprises the end one being communicated with crankcase chamber, the end two being communicated with oil chamber and the intermediate portion one that is communicated with Yi He end, end two, described passage two comprises with casing and to be communicated with chamber 7 away from the adjacent setting of case lid one side, be located on wall box and be communicated with crankcase chamber and be communicated with the through hole 5 55 of chamber and be located at the through hole 6 56 that is communicated with crankcase chamber and connection chamber on wall box, described end one and through hole five exceed the lowest part setting of crankcase chamber.Or the through hole two in the present embodiment combines respectively as passage one, passage two with the through hole 3 53 in embodiment two; Or the through hole two in the present embodiment combines respectively as passage one, passage two with three kinds of embodiments' through hole 54.
Crankcase chamber: the position that cylinder block bottom is used for installing bent axle is called crankcase chamber.
Cam chamber: the position that is used for installing camshaft becomes cam chamber.
Except above preferred embodiment, the present invention also has other mode of execution, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise depart from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (9)
1. an engine crankshaft box structure, comprise casing (1), one side of described casing is uncovered, also comprise and be connected the uncovered case lid of capping (2) with box sealing, described casing and case lid surround inner chamber, it is characterized in that: in described casing, be provided with the dividing plate (11) that inner chamber is divided into two, described dividing plate is connected with the madial wall of casing and is tightly connected with case lid, it between the upper wall of casing and dividing plate, is crankcase chamber (3), between the lower wall of casing and dividing plate, be oil chamber (4), between described crankcase chamber and oil chamber, be communicated with.
2. a kind of engine crankshaft box structure according to claim 1, it is characterized in that: between described crankcase chamber and oil chamber, by passage one, passage two, be communicated with, described passage one is near case lid setting or be arranged at case lid, and described passage two is away from case lid setting.
3. a kind of engine crankshaft box structure according to claim 2, is characterized in that: described passage one is for to be located at dividing plate near the through hole one (51) of case lid one side; Or described passage one is for being located at the through hole two (52) in case lid.
4. a kind of engine crankshaft box structure according to claim 3, is characterized in that: described passage two is for to be located at dividing plate away from the through hole three (53) of case lid one side; Or described passage two is for to be located on casing away from the through hole four (54) in the sidewall of case lid one side; Or described passage two comprises and casing being communicated with chamber (7), being located at and being communicated with crankcase chamber on wall box and being communicated with the through hole five (55) of chamber and being located at the through hole six (56) that is communicated with crankcase chamber and connection chamber on wall box away from the adjacent setting of case lid one side.
5. a kind of engine crankshaft box structure according to claim 4, is characterized in that: described through hole one, end one, through hole three, end three, through hole five all exceed the lowest part setting of crankcase chamber.
6. according to the arbitrary described a kind of engine crankshaft box structure of claim 1 to 5, it is characterized in that: described case lid has the outer mould assembling face (21) coordinating with box sealing and the interior mould assembling face (22) being sealed and matched with dividing plate.
7. a kind of engine crankshaft box structure according to claim 6, it is characterized in that: between described casing and case lid, be provided with mould assembling sealing gasket (6), described mould assembling sealing gasket comprises the outer mould assembling sealed department (61) arranging along outer mould assembling face and the interior mould assembling sealed department (62) arranging along interior mould assembling face.
8. a kind of engine crankshaft box structure according to claim 7, it is characterized in that: between described outer mould assembling sealed department and interior mould assembling sealed department, be provided with stiffening rib (63), one end of described stiffening rib is connected with the lower end of outer mould assembling sealed department, and the other end of described stiffening rib is connected with the lower end of interior mould assembling sealed department.
9. a kind of engine crankshaft box structure according to claim 8, is characterized in that: described outer mould assembling sealed department, interior mould assembling sealed department and stiffening rib are structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498639.2A CN103603743B (en) | 2013-10-21 | 2013-10-21 | A kind of crankcase structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498639.2A CN103603743B (en) | 2013-10-21 | 2013-10-21 | A kind of crankcase structure of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103603743A true CN103603743A (en) | 2014-02-26 |
| CN103603743B CN103603743B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310498639.2A Active CN103603743B (en) | 2013-10-21 | 2013-10-21 | A kind of crankcase structure of engine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10331715A (en) * | 1997-05-29 | 1998-12-15 | Suzuki Motor Corp | Ladder frame structure |
| CN2641300Y (en) * | 2003-06-11 | 2004-09-15 | 重庆宗申技术开发研究有限公司 | Crankcase for petro engine |
| CN1609416A (en) * | 2003-10-21 | 2005-04-27 | 丰田自动车株式会社 | Fastening jig for a baffle plate for oil pan use and fastening method thereof |
| CN1654794A (en) * | 1999-01-25 | 2005-08-17 | 布里格斯斯特拉顿公司 | Four-stroke internal combustion engine |
| JP2005325737A (en) * | 2004-05-13 | 2005-11-24 | Toyota Motor Corp | Baffle plate |
| CN202170833U (en) * | 2011-07-19 | 2012-03-21 | 重庆宗申通用动力机械有限公司 | Handheld crankshaft box of engine |
| CN203626994U (en) * | 2013-10-21 | 2014-06-04 | 浙江亚特电器有限公司 | Engine crankcase structure |
-
2013
- 2013-10-21 CN CN201310498639.2A patent/CN103603743B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10331715A (en) * | 1997-05-29 | 1998-12-15 | Suzuki Motor Corp | Ladder frame structure |
| CN1654794A (en) * | 1999-01-25 | 2005-08-17 | 布里格斯斯特拉顿公司 | Four-stroke internal combustion engine |
| CN2641300Y (en) * | 2003-06-11 | 2004-09-15 | 重庆宗申技术开发研究有限公司 | Crankcase for petro engine |
| CN1609416A (en) * | 2003-10-21 | 2005-04-27 | 丰田自动车株式会社 | Fastening jig for a baffle plate for oil pan use and fastening method thereof |
| JP2005325737A (en) * | 2004-05-13 | 2005-11-24 | Toyota Motor Corp | Baffle plate |
| CN202170833U (en) * | 2011-07-19 | 2012-03-21 | 重庆宗申通用动力机械有限公司 | Handheld crankshaft box of engine |
| CN203626994U (en) * | 2013-10-21 | 2014-06-04 | 浙江亚特电器有限公司 | Engine crankcase structure |
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| Publication number | Publication date |
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| CN103603743B (en) | 2016-01-27 |
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Denomination of invention: An engine crankcase structure Effective date of registration: 20210316 Granted publication date: 20160127 Pledgee: China Co. truction Bank Corp Jiaxing branch Pledgor: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. Registration number: Y2021330000188 |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: Jiaxing City, Zhejiang province 314100 Nanhu District Yu Xin Zhen Industrial Zone North Water Road No. 1 Patentee before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |