Cylinder head cover and engine

Abstract

The utility model provides a cylinder head cover and an engine, the cylinder head cover comprises a cover main body provided with a mounting port, and the mounting port is communicated with a breathing channel and is used for forming a breathing cavity; the breathing diaphragm comprises a first mounting surface and a second mounting surface which are located on the same side, the first mounting surface is movably arranged on the mounting opening and used for adjusting the volume of the breathing cavity, and the second mounting surface extends into the breathing cavity and is connected with an elastic part; wherein the first installation face moves in the direction away from the breathing cavity under the action of external force in the first direction, the first installation face moves in the direction close to the breathing cavity under the action of external force in the second direction, and the first direction is opposite to the second direction. The technical problem that in the prior art, an engine is high in oil consumption is solved.

Description

Technical Field

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

[0002] At present, the respirator of domestic small diesel air-cooled engines only uses a one-way valve to connect the air in the engine cavity to the atmosphere or the engine's intake pipe. However, when the gas in the engine cavity is discharged, a lot of oil mist is brought out along with the gas in the engine cavity, resulting in excessive oil consumption, engine oil burning, and excessive emissions, polluting the environment and increasing exhaust emissions. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a cylinder head cover and an engine, which solve the technical problem of high fuel consumption of the engine in the prior art.

[0004] According to the embodiment of the present invention, the present invention adopts the following technical solutions:

[0005] A cylinder head cover is mounted on an engine, wherein the engine is provided with a breathing passage, and the cylinder head cover comprises:

[0006] The cover body is provided with a mounting opening, the mounting opening being connected to the breathing passage to form a breathing cavity;

[0007] The breathing diaphragm includes a first mounting surface and a second mounting surface located on the same side, wherein the first mounting surface is movably arranged at the mounting opening for adjusting the volume of the breathing cavity, and the second mounting surface extends into the breathing cavity and is connected to the elastic member;

[0008] The first mounting surface moves away from the breathing cavity under the action of an external force along a first direction, and moves toward the breathing cavity under the action of an external force along a second direction. The first direction and the second direction are opposite.

[0009] Preferably, the first mounting surface is provided with a mounting boss, and the mounting boss extends into the breathing cavity and forms the second mounting surface.

[0010] Preferably, the elastic member is sleeved on the mounting boss, and its deformation direction is consistent with the movement direction of the first mounting surface.

[0011] Preferably, the elastic member is a spring.

[0012] Preferably, the breathing passage is provided with a positioning tube, which extends into the spring to support the spring.

[0013] Preferably, the cover body is provided with a mounting groove, and the mounting opening is located in the mounting groove.

[0014] Preferably, the breathing diaphragm is provided with a third mounting surface, and the third mounting surface is arranged opposite to the first mounting surface and is used to cover the mounting groove.

[0015] Preferably, the cylinder head cover further comprises: a protective cover, which is detachably provided on the cover body and suspended above the third mounting surface.

[0016] Preferably, the protective cover is provided with a plurality of ventilation channels.

[0017] The utility model also provides an engine, comprising the above-mentioned cylinder head cover.

[0018] Compared with the existing technology, the utility model has the following beneficial effects: whether under positive pressure or negative pressure conditions, the elastic part ensures that the breathing diaphragm can respond to pressure changes in a timely manner and reset quickly, closing the engine's breathing channel, preventing oil mist from being discharged from the breathing channel, causing excessive engine oil consumption and excessive emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the cover body in one embodiment of the present invention;

[0020] Figure 2 This is an exploded schematic diagram of the cover body in one embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a protective cover in one embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of a breathing diaphragm in one embodiment of the present invention;

[0023] Figure 5 This is a structural schematic diagram of a cover body installed on an engine in one embodiment of the present invention.

[0024] In the above drawings: 1. Breathing channel; 2. Cover body; 201. Mounting port; 3. Breathing diaphragm; 301. First mounting surface; 302. Second mounting surface; 303. Third mounting surface; 4. Spring; 5. Positioning tube; 6. Mounting groove; 7. Protective cover; 701. Air duct. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] See also Figures 1 to 5 The utility model provides a cylinder head cover installed on an engine, wherein the engine is provided with a breathing passage 1, and the cylinder head cover comprises:

[0027] The cover body 2 is provided with a mounting opening 201, the mounting opening 201 being connected to the breathing passage 1 to form a breathing cavity;

[0028] The breathing diaphragm 3 includes a first mounting surface 301 and a second mounting surface 302 located on the same side. The first mounting surface 301 is movably provided on the mounting opening 201 for adjusting the volume of the breathing cavity. The second mounting surface 302 extends into the breathing cavity and is connected to the elastic member.

[0029] The first mounting surface 301 moves away from the breathing cavity under the action of an external force in a first direction, and moves closer to the breathing cavity under the action of an external force in a second direction. The first direction and the second direction are opposite.

[0030] In this embodiment, a cover body 2 is provided on the engine, the engine is provided with a breathing channel 1, the cover body 2 is provided with a mounting port 201 connected to the breathing channel 1, the mounting port 201 and the breathing channel 1 form a breathing cavity, and the breathing diaphragm 3 includes a first mounting surface 301 and a second mounting surface 302 located on the same side, the first mounting surface 301 is movably provided on the mounting port 201, the second mounting surface 302 extends into the breathing cavity and is connected to an elastic member, the elastic member provides a restoring force, is connected to the second mounting surface 302 of the breathing diaphragm 3, and provides elastic support for the breathing diaphragm 3. When the breathing diaphragm 3 moves under pressure, the elastic member stores energy and helps the diaphragm to reset when the pressure is reduced. Specifically, when the engine is running and the crankshaft is caused to When the pressure in the box increases, the increased pressure will push the first mounting surface 301 of the breathing diaphragm 3 to move outward (i.e., move along the first direction), thereby reducing the pressure in the crankcase. When the engine stops or slows down, resulting in negative pressure (vacuum) in the crankcase, the external atmospheric pressure will force the first mounting surface 301 of the breathing diaphragm 3 to move inward (i.e., move along the second direction) to balance the internal and external pressures of the engine, preventing sealing problems or other mechanical damage caused by negative pressure. The elastic part ensures that the breathing diaphragm 3 can respond to pressure changes in a timely manner and reset quickly, avoiding the gas in the engine cavity from being discharged directly from the breathing channel 1, causing the oil mist in the engine cavity to be discharged together, thereby causing excessive oil consumption, engine burning of oil, and excessive emissions to pollute the environment and increase exhaust emissions.

[0031] The first mounting surface 301 is provided with a mounting boss, which extends into the breathing cavity and forms the second mounting surface 302 .

[0032] In this embodiment, the first mounting surface 301 is provided with a mounting boss, which extends into the breathing cavity and forms a second mounting surface 302. The design of the mounting boss makes the breathing diaphragm 3 not just a planar structure, but has a three-dimensional shape. The mounting boss can fix the breathing diaphragm 3, and when the breathing diaphragm 3 is subjected to changes in internal and external pressures, it can help the diaphragm to better position and move in the breathing cavity.

[0033] The elastic member is sleeved on the mounting boss, and its deformation direction is consistent with the movement direction of the first mounting surface 301 .

[0034] In this embodiment, by fitting the elastic member onto the mounting boss and aligning its deformation direction with the movement direction of the first mounting surface 301, the displacement of the breathing diaphragm 3 can be more precisely controlled, ensuring that it can quickly respond and return to its initial position when pressure changes, making the entire device more compact and space-saving. Furthermore, the elastic member is a spring 4.

[0035] The breathing passage 1 is provided with a positioning tube 5 , which extends into the spring 4 to support the spring 4 .

[0036] In this embodiment, by providing a positioning tube 5 to support the spring 4, the working stability and reliability of the spring 4 can be significantly improved, preventing the spring 4 from deformation or failure after long-term operation, and ensuring that the spring 4 can move along a predetermined path during the expansion and contraction process, thereby facilitating better control of the displacement of the breathing diaphragm 3 and ensuring that it can respond quickly and return to its initial position when the pressure changes.

[0037] The cover body 2 is provided with a mounting groove 6 , and the mounting opening 201 is located in the mounting groove 6 .

[0038] In this embodiment, the installation groove 6 is provided to facilitate improving the sealing performance of the breathing diaphragm 3 and prevent pollutants such as dust and moisture from entering the interior of the engine. The embedded installation groove 6 design makes the entire cylinder head cover look neater and more beautiful, meeting the requirements of modern industrial design.

[0039] The breathing diaphragm 3 is provided with a third mounting surface 303 . The third mounting surface 303 is arranged opposite to the first mounting surface 301 and is used to cover the mounting groove 6 .

[0040] In this embodiment, the third mounting surface 303 is located on the other side of the first mounting surface 301 and is used to cover the mounting groove 6. The purpose is to provide an additional protective layer to prevent external impurities from entering the mounting groove 6, thereby protecting the breathing diaphragm 3 and the interior of the engine from pollution.

[0041] The cylinder head cover further includes a protective cover 7 , which is detachably mounted on the cover body and suspended above the third mounting surface 303 .

[0042] In this embodiment, the protective cover 7 is suspended above the third mounting surface 303 to fix the position of the breathing diaphragm 3 and prevent the breathing diaphragm 3 from loosening or shifting during the displacement process.

[0043] The protective cover 7 is provided with a plurality of ventilation channels 701 .

[0044] In this embodiment, by providing the air exchange channel 701 on the protective cover 7, the external air flow exchange can be better promoted, and the pressure balance can be achieved more quickly when the internal and external pressures of the engine change.

[0045] The present utility model also provides an engine, including the cylinder head cover as described above. The specific structure of the engine refers to the above embodiment. Since the present engine adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A cylinder head cover, mounted on an engine, wherein the engine is provided with a breathing passage, characterized in that: The cylinder head cover comprises: The cover body is provided with a mounting opening, the mounting opening being connected to the breathing passage to form a breathing cavity; The breathing diaphragm includes a first mounting surface and a second mounting surface located on the same side, wherein the first mounting surface is movably arranged at the mounting opening for adjusting the volume of the breathing cavity, and the second mounting surface extends into the breathing cavity and is connected to the elastic member; The first mounting surface moves away from the breathing cavity under the action of an external force along a first direction, and moves toward the breathing cavity under the action of an external force along a second direction. The first direction and the second direction are opposite.

2. The cylinder head cover according to claim 1, characterized in that: The first mounting surface is provided with a mounting boss, and the mounting boss extends into the breathing cavity and forms the second mounting surface.

3. The cylinder head cover according to claim 2, characterized in that: The elastic member is sleeved on the mounting boss, and its deformation direction is consistent with the movement direction of the first mounting surface.

4. The cylinder head cover according to any one of claims 1 to 3, characterized in that: The elastic member is a spring.

5. The cylinder head cover according to claim 4, characterized in that: The breathing passage is provided with a positioning tube, which extends into the spring and is used to support the spring.

6. The cylinder head cover according to claim 1, characterized in that: The cover body is provided with a mounting groove, and the mounting opening is located in the mounting groove.

7. The cylinder head cover according to claim 6, characterized in that: The breathing diaphragm is provided with a third mounting surface, which is arranged opposite to the first mounting surface and is used to cover the mounting groove.

8. The cylinder head cover according to claim 7, characterized in that: The cylinder head cover further includes a protective cover, which is detachably provided on the cover body and suspended above the third mounting surface.

9. The cylinder head cover according to claim 8, characterized in that: The protective cover is provided with a plurality of ventilation channels.

10. An engine, characterized in that: The invention comprises a cylinder head cover according to any one of claims 1 to 9.

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