Crankcase cover and engine

Abstract

The utility model belongs to the technical field of engines, and particularly relates to a crankcase cover and an engine, the crankcase cover comprises a crankcase cover body, the lower portion of the crankcase cover body is provided with a protrusion extending laterally, the protrusion and the crankcase cover body form a containing cavity for storing engine oil, by arranging the protrusion, the containing space of the lower portion of a crankcase is increased, and more engine oil can be stored; the engine oil updating frequency is reduced; for an engine adopting splash lubrication, engine oil is driven to splash to all components for lubrication through rotation of the crank, so that when the crank rotates to the lowest point, the crank needs to be lower than the liquid level of the engine oil, compared with the mode that the protrusion is arranged at the lower end of the crankcase, the overall height of the crankcase cannot be increased, and the liquid level of the engine oil descends slowly; and the engine oil updating frequency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a crankcase cover and an engine. Background Art

[0002] In various engines, engine oil mainly plays the role of lubrication, friction reduction and cooling. The lower part of the engine is the crankcase, and the engine oil is generally stored at the bottom of the engine crankcase.

[0003] When the amount of oil in the crankcase is small, the following problems will arise: the oil is updated quickly, the oil temperature is easily too high, causing the oil to deteriorate, the lubrication effect to deteriorate, and safety failures to occur; but the oil storage capacity is limited by the internal space of the crankcase, and the storage capacity is very limited. Therefore, some engines have insufficient oil storage capacity. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide a crankcase cover, which solves the technical problem that the oil storage capacity in the bottom space of the existing engine is insufficient, resulting in a high frequency of oil renewal.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A crankcase cover comprises a cover body. A bulge extending laterally is provided at the lower part of the cover body to form a receiving cavity for storing engine oil with the cover body.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] 1. By setting the protrusion, the accommodation space at the bottom of the crankcase is increased, which can store more engine oil and reduce the frequency of oil renewal.

[0009] 2. For engines that use splash lubrication, the crank rotates to drive the oil to splash onto various components for lubrication. Therefore, when the crank rotates to the lowest point, it needs to be lower than the oil level. By providing a protrusion, the overall height of the crankcase will not be increased compared to providing the protrusion at the lower end of the crankcase, and the oil level will drop more slowly, so the oil update frequency will be lower.

[0010] As a preferred embodiment of the present invention, the protrusion position in the vertical direction is lower than the lowest position of the crankshaft crank rotation.

[0011] Beneficial effect: The crankshaft will not be immersed in the engine oil when rotating, thus avoiding the crankshaft from contacting the engine oil and increasing the mechanical resistance.

[0012] As a preferred embodiment of the utility model, a plurality of assembly holes are provided on the inner side of the protrusion, a crankshaft hole is provided on the inner side of the case cover body, a plurality of groups of reinforcing ribs are provided on the inner side of the case cover body, and the plurality of reinforcing ribs are arranged around the assembly holes and connected to the corresponding assembly holes.

[0013] Beneficial effect: The crankshaft hole and the assembly hole bear a large load. By arranging reinforcing ribs, the structural strength of the assembly hole and the crankshaft hole is improved without increasing the wall thickness.

[0014] As a preferred embodiment of the utility model, a plurality of weight-reducing holes are provided on the outer side of the protrusion, and the center lines of the plurality of weight-reducing holes are respectively colinear with the center lines of the corresponding assembly holes.

[0015] Beneficial effect: Since the protrusion is set and the depth of the assembly hole is fixed, the opening position of the assembly hole needs to match the original component. Therefore, it is necessary to extend the assembly hole part laterally when setting the corresponding support part, and set the corresponding weight-reducing hole as the support part to avoid the increase of internal pores and shrinkage defects due to local excessive thickness when die-casting the rocker arm seat.

[0016] As a preferred embodiment of the present invention, the box cover body and the protrusion are integrally formed, and an arc surface is provided between the box cover body and the protrusion.

[0017] Beneficial effects: The one-piece crankcase cover has higher structural strength, lower processing cost, higher production efficiency, and smooth transition through the arc surface to avoid stress concentration.

[0018] As a preferred embodiment of the present invention, an oil filling pipe is provided on one side of the protrusion of the box cover body.

[0019] Beneficial effect: The oil filling pipe is provided to facilitate the addition of engine oil.

[0020] An embodiment of the utility model further provides an engine, comprising the crankcase cover described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the inner structure of the crankcase cover embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the outer structure of an embodiment of a crankcase cover of the utility model;

[0023] Figure 3 It is a cross-sectional view of an embodiment of a crankcase cover of the present utility model.

[0024] The reference numerals include: box cover body 1, protrusion 2, assembly hole 3, reinforcing rib 4, weight-reducing hole 5, arc surface 6, oil filling pipe 7. DETAILED DESCRIPTION

[0025] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0026] In the description of the present application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] See also Figure 1 and Figure 2 As shown, this embodiment discloses a crankcase cover, including a cover body 1, wherein a laterally extending protrusion 2 is provided at the lower portion of the cover body 1 to form a storage cavity for storing engine oil together with the cover body 1; by providing the protrusion 2, the storage space at the lower portion of the crankcase is increased, more engine oil can be stored, and the frequency of engine oil renewal is reduced.

[0028] The protrusion 2 has a vertical position lower than the lowest position of the crankshaft's crankshaft rotation, so that the crankshaft will not be immersed in the engine oil when rotating, thus avoiding contact between the crankshaft and the engine oil and increasing mechanical resistance.

[0029] Among them, see Figure 1 As shown, a plurality of assembly holes 3 are provided on the inner side of the protrusion 2, a crankshaft hole is provided on the inner side of the box cover body 1, a plurality of groups of reinforcing ribs 4 are provided on the inner side of the box cover body 1, and the plurality of reinforcing ribs 4 are arranged around the assembly holes 3 and connected to the corresponding assembly holes 3.

[0030] Among them, see Figure 3 As shown, a plurality of weight-reducing holes 5 are provided on the outer side of the protrusion 2, and the center lines of the plurality of weight-reducing holes 5 are respectively colinear with the center lines of the corresponding assembly holes 3; since the protrusion 2 is provided and the depth of the assembly hole 3 is fixed, the opening position of the assembly hole 3 needs to match the original component, so it is necessary to extend the assembly hole 3 laterally when providing the corresponding supporting part, and provide the corresponding weight-reducing hole 5 as the supporting part to avoid the increase of internal pores and shrinkage defects due to local excessive thickness when die-casting the rocker arm seat.

[0031] Among them, see Figure 2 As shown, the crankcase cover body 1 and the protrusion 2 are integrally formed, and an arc surface 6 is provided between the crankcase cover body 1 and the protrusion 2; the integrally formed crankcase cover has higher structural strength, lower processing cost, and higher production efficiency, and a smooth transition is achieved through the arc surface 6 to avoid stress concentration.

[0032] Among them, the reference Figure 1 As shown, the tank cover body 1 is provided with an oil filling pipe 7 on one side of the protrusion 2; the oil filling pipe is provided to facilitate the addition of engine oil.

[0033] An embodiment of the utility model further provides an engine, comprising the crankcase cover described above.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A crankcase cover, characterized in that: It comprises a box cover body, the lower part of which is provided with a bulge extending laterally, which forms a containing cavity for storing engine oil with the box cover body.

2. The crankcase cover according to claim 1, characterized in that: The protrusion position in the vertical direction of the protrusion is lower than the lowest position of the crankshaft crank rotation.

3. The crankcase cover according to claim 1, characterized in that: A plurality of assembly holes are arranged on the inner side of the protrusion, a crankshaft hole is arranged on the inner side of the box cover body, and a plurality of groups of reinforcing ribs are arranged on the inner side of the box cover body. The plurality of reinforcing ribs are arranged around the assembly holes and connected to the corresponding assembly holes.

4. The crankcase cover according to claim 3, characterized in that: A plurality of weight-reducing holes are arranged on the outer side of the protrusion, and the center lines of the plurality of weight-reducing holes are respectively collinear with the center lines of the corresponding assembly holes.

5. The crankcase cover according to claim 1, characterized in that: The box cover body and the protrusion are integrally formed, and an arc surface is provided between the box cover body and the protrusion.

6. The crankcase cover according to claim 1, characterized in that: The box cover body is provided with an oil filling pipe on one side of the protrusion.

7. An engine, characterized in that: Comprising a crankcase cover according to any one of claims 1 to 6.

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