Sealed crankcase

Abstract

The utility model provides a sealed crankcase, and belongs to the technical field of internal combustion engines. The problems that in the prior art, a product is complex in manufacturability and high in cost, and the sealing performance is greatly influenced by repeated disassembly are solved. The sealed crankcase comprises a shell and a cover installed on the shell, a clamping block playing a clamping role is arranged on the shell, the clamping block is fixed to the shell through a supporting column, a sealing ring playing a sealing role is arranged between the shell and the cover, a clamping groove matched with the clamping block is formed in the sealing ring, and the clamping block is fixed to the shell through the supporting column. A left buckle and a right buckle are arranged at the left end and the right end of the clamping groove respectively, a left groove facilitating clamping of the left buckle to the clamping block is formed in the bottom of the clamping block, and a right groove facilitating clamping of the right buckle to the clamping block is formed in the bottom of the clamping block. The crankcase has the advantage that the sealing performance of the crankcase is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of internal combustion engines, relates to a crankcase, and particularly relates to a sealed crankcase. Background Technique

[0002] When the engine is working, the gases that leak into the crankcase include completely burned gases, incompletely burned gases, and unburned gases, etc. The harmful substances in the completely burned gases are mainly strong carcinogens - nitrogen oxides, the harmful substances in the incompletely burned gases are mainly toxic carbon monoxide, and the harmful substances in the unburned gases are mainly hydrocarbon compounds that have a stimulating effect on the human senses. In order to avoid the direct discharge of harmful gases into the atmosphere, an efficient crankcase sealing structure must be adopted.

[0003] For a long time, researchers have taken various means to improve the sealing performance of the crankcase, such as using various rubber gaskets, sealing backing plates, sealing strips, sealing coatings and other auxiliary devices to improve the sealing performance. However, the existing technology products have complex processability, high costs, and the repeated disassembly has a greater impact on the sealing performance. Summary of the Invention

[0004] The purpose of the utility model is to provide an efficiently sealed crankcase for the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A sealed crankcase includes a housing and a lid installed on the housing. It is characterized in that a clamping block for clamping is provided on the housing, the clamping block is fixed on the housing through a support column, a sealing ring for sealing is provided between the housing and the lid, a clamping groove that fits with the clamping block is provided on the sealing ring, a left buckle and a right buckle are respectively provided at the left and right ends of the clamping groove, a left groove for facilitating the left buckle to be clamped on the clamping block is provided at the bottom of the clamping block, and a right groove for facilitating the right buckle to be clamped on the clamping block is provided at the bottom of the clamping block.

[0006] In the above-mentioned sealed crankcase, sealing gaskets for sealing are provided on both sides of the support column, and the sealing gaskets abut against the left buckle and the right buckle to improve the sealing effect of the sealing ring.

[0007] In the above-mentioned sealed crankcase, the structure of the clamping block is T-shaped.

[0008] In the above-mentioned sealed crankcase, the sealing ring is of a circular structure.

[0009] Compared with the prior art, the sealed crankcase of the utility model significantly improves the sealing performance of the crankcase by optimizing the sealing structure, reduces the leakage of fuel gas and lubricating oil, and prolongs the service life. Description of the Drawings

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the sealed crankcase.

[0011] Figure 2 This is a sectional view of the sealed crankcase.

[0012] Figure 3 This is a partial sectional view of the sealed crankcase.

[0013] In the figure, 1 is the housing; 2 is the lid; 3 is the clamping block; 4 is the support column; 5 is the sealing ring; 6 is the clamping groove; 7 is the left buckle; 8 is the right buckle; 9 is the left groove; 10 is the right groove; 11 is the gasket. Detailed implementation mode

[0014] The following are specific embodiments of the present utility model and in combination with the attached drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0015] As Figure 1 , Figure 2 , Figure 3 shown, this sealed crankcase includes a housing 1 and a lid 2 installed on the housing 1. A clamping block 3 for clamping is provided on the housing 1. The clamping block 3 is fixed to the housing 1 through a support column 4. A sealing ring 5 for sealing is provided between the housing 1 and the lid 2. A clamping groove 6 that fits with the clamping block 3 is provided on the sealing ring 5. A left buckle 7 and a right buckle 8 are respectively provided at the left and right ends of the clamping groove 6. A left groove 9 for facilitating the clamping of the left buckle 7 on the clamping block 3 is provided at the bottom of the clamping block 3. A right groove 10 for facilitating the clamping of the right buckle 8 on the clamping block 3 is provided at the bottom of the clamping block 3. When installing the sealing ring 5, due to the rubber elasticity of the sealing ring 5, the left buckle 7 and the right buckle 8 are respectively inserted and snapped into the left and right grooves 10, and the sealing ring 5 is continuously pushed into the clamping block 3, so that the clamping groove 6 is completely embedded in the clamping block 3, which can achieve the overall positioning effect of the sealing ring 5.

[0016] In further detail, sealing gaskets 11 for sealing are provided on both sides of the support column 4. The sealing gaskets 11 abut against the left buckle 7 and the right buckle 8 to improve the sealing effect of the sealing ring 5.

[0017] In further detail, the structure of the clamping block 3 is in a T shape, and the T-shaped clamping block 3 has higher stability.

[0018] In further detail, the sealing ring 5 is in a circular structure, and the circular sealing ring 5 is easy to disassemble, repair and replace.

[0019] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0020] Although terms such as housing 1, lid 2, latch 3, support column 4, sealing ring 5, card slot 6, left buckle 7, right buckle 8, left groove 9, right groove 10, and gasket 11 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A sealed crankcase, comprising a housing (1) and a cover (2) mounted on the housing (1), characterized in that: The shell (1) is provided with a card block (3) for clamping, and the card block (3) is fixed to the shell (1) through a support column (4). A sealing ring (5) for sealing is provided between the shell (1) and the cover (2). The sealing ring (5) is provided with a card slot (6) that fits with the card block (3). The left and right ends of the card slot (6) are respectively provided with a left buckle (7) and a right buckle (8). The bottom of the card block (3) is provided with a left groove (9) for facilitating the left buckle (7) to be clamped on the card block (3), and the bottom of the card block (3) is provided with a right groove (10) for facilitating the right buckle (8) to be clamped on the card block (3).

2. A sealed crankcase according to claim 1, characterized in that: Sealing pads (11) for sealing are arranged on both sides of the support column (4), and the sealing pads (11) abut against the left buckle (7) and the right buckle (8) to improve the sealing effect of the sealing ring (5).

3. A sealed crankcase according to claim 1, characterized in that: The block (3) structure is in a T-shape.

4. A sealed crankcase according to claim 1, characterized in that: The sealing ring (5) is a circular structure.

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