CN202970943U - Left crank case for outboard engine - Google Patents
Left crank case for outboard engine Download PDFInfo
- Publication number
- CN202970943U CN202970943U CN 201220708610 CN201220708610U CN202970943U CN 202970943 U CN202970943 U CN 202970943U CN 201220708610 CN201220708610 CN 201220708610 CN 201220708610 U CN201220708610 U CN 201220708610U CN 202970943 U CN202970943 U CN 202970943U
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- CN
- China
- Prior art keywords
- crank case
- left crank
- cooling water
- cooling
- model
- 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a left crank case for an outboard engine. The left crank case is provided with a body (1), and a cooling water cavity (2) is arranged on the rear lower portion of a case closing face of the body (1). A water inlet (3) and a water outlet (4) are arranged at the bottom of the cooling water cavity (2), and the outer end of the water outlet (4) is connected with a water outlet tube (5), and the outer end of the water inlet (3) is connected with a water inlet tube (6). According to the left crank case for the outboard engine, the cooling effect is improved effectively by adding the cooling water cavity, and mounting of an output flange plate on the left crank case is facilitated simultaneously; and the left crank case is simple in structure and easy to implement.
Description
Technical field
The utility model belongs to the outboard machine field, specifically, relates in particular to a kind of left crankcase for outboard machine.
Background technique
Outboard machine is a kind of being suspended on boat, ship stern trimming flag, can promote the detachable type power plant of boat, ship navigation, also claim outboard motor, on-hook, it mainly is comprised of motor and transmission, operation, suspension arrangement and propulsion device etc., and have compact structure, lightweight, convenient disassembly, the characteristics such as simple to operate, noise is little, be particularly suitable in the inland river and use in the coastal waters.
Engine crankshaft box is parts important on outboard machine, and engine housing is comprised of left crankcase and right crankcase.We have used model when the design outboard machine be 250 cooling motorcycle engine waters, yet existing motorcycle engine cooling unit can not satisfy the needs of ship machine.
In order to satisfy propeller cavitation power output requirement, engine crankshaft box must realize changing the function of power outbound course, so just need to be from bottom mounting plane and the delivery outlet of engine housing.Therefore at the bottom of engine housing mounting plane and output flange mounting hole.Yet the bottom of using model and be 250 cooling motorcycle engine water left crankcases is curved surface, and the bottom also is not used for installing the mounting hole of output flange, therefore must carry out large technology remodeling.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of left crankcase for outboard machine, in order to improve cooling effect and change the power outbound course.
The technical solution of the utility model is as follows: a kind of left crankcase for outboard machine, has body (1), it is characterized in that: the rear and low part of described body (1) mould assembling face is provided with a cooling water chamber (2), the bottom of this cooling water chamber (2) has a water intake (3) and water outlet (4), and the outer end of water intake (3) is connected to intake pipe (5), and the outer end of described water outlet (4) is connected to outlet pipe (6); The bottom of described body (1) is the plane, and the front portion on this plane has a semi-circular hole (7), and the bottom of body (1) vertically is provided with tapped blind hole (8).
This left crankcase is on the basis of conventional construction, rear and low part at body (1) mould assembling face has been set up a cooling water chamber (2), and on right case also correspondence be provided with a cooling water chamber, these two cooling water chambeies form a whole cooling water chamber, and cooling water enters this cooling water chamber by water intake (3), thereby carry out cooling to engine housing, cooled hot water flows out and carries out again cooling to box outer surface by water outlet (4), so just effectively improve cooling effect, and simple in structure, easy to implement.
Adopt above structure, can closely fit with the upper plate surface of output flange mounting plate in the body of this left box body (1) bottom surface, and after screw passes screw via hole on the output flange mounting plate, screw in the tapped blind hole (8) of body (1) bottom, thereby output flange is installed fixing.In addition, the synthetic complete circular port of the semi-circular hole on the semi-circular hole on this left box body (7) and right case can be installed transmission shaft, bearing and oil sealing during assembling in this circular port.
In the utility model, the diameter of described semi-circular hole (7) is 60 to 66mm.
As preferably, the diameter of described semi-circular hole (7) is 64mm.
Beneficial effect: the utility model effectively improves cooling effect by setting up cooling water chamber, and is convenient to simultaneously output flange is installed on this left crankcase, and simple in structure, easy to implement.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the rear view of Fig. 1;
Fig. 3 is that the A-A of Fig. 2 is to cutaway view Amplified image;
Fig. 4 is that the B of Fig. 2 is to view.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Fig. 1,2,3 and 4, a kind of left crankcase for outboard machine has body 1, is provided with a cooling water chamber 2 at the rear and low part of body 1 mould assembling face, and the bottom of this cooling water chamber 2 has a water intake 3 and water outlet 4.Described water intake 3 outer ends are connected to intake pipe 5, and the outer end of water outlet 4 is connected to outlet pipe 6.
The bottom of described body 1 is the plane, and the front portion on this plane has a semi-circular hole 7, and the diameter of this semi-circular hole 7 is 60 to 66mm, and is preferably 64mm.And the bottom of above-mentioned body 1 vertically has a plurality of tapped blind holes 8, and all the other structures of the present utility model and existing structure are substantially similar, does not do at this and gives unnecessary details.
The above is only preferred embodiment of the present utility model; not take the utility model as restriction; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. left crankcase that is used for outboard machine, has body (1), it is characterized in that: the rear and low part of described body (1) mould assembling face is provided with a cooling water chamber (2), the bottom of this cooling water chamber (2) has a water intake (3) and water outlet (4), and the outer end of water intake (3) is connected to intake pipe (5), and the outer end of described water outlet (4) is connected to outlet pipe (6); The bottom of described body (1) is the plane, and the front portion on this plane has a semi-circular hole (7), and the bottom of body (1) vertically is provided with tapped blind hole (8).
2. be used for according to claim 1 the left crankcase of outboard machine, it is characterized in that: the diameter of described semi-circular hole (7) is 60 to 66mm.
3. be used for according to claim 2 the left crankcase of outboard machine, it is characterized in that: the diameter of described semi-circular hole (7) is preferably 64mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708610 CN202970943U (en) | 2012-12-20 | 2012-12-20 | Left crank case for outboard engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708610 CN202970943U (en) | 2012-12-20 | 2012-12-20 | Left crank case for outboard engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970943U true CN202970943U (en) | 2013-06-05 |
Family
ID=48512028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708610 Expired - Fee Related CN202970943U (en) | 2012-12-20 | 2012-12-20 | Left crank case for outboard engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970943U (en) |
-
2012
- 2012-12-20 CN CN 201220708610 patent/CN202970943U/en not_active Expired - Fee Related
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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: 20130605 Termination date: 20151220 |
|
| EXPY | Termination of patent right or utility model |