Cylinder head assembly and engine

Abstract

The utility model provides a cylinder head assembly which comprises a cylinder head body and a spark plug, a first inclined side is formed on the upwarp side of the cylinder head body, and a second inclined side is formed on the downwarp side of the cylinder head body. The cylinder head body comprises an upper seat body and a lower seat body which are connected, the upper seat body is located above the lower seat body, and a mounting hole is formed in the lower seat body and is close to the center position of the lower seat body. The spark plug is inserted into the mounting hole, and the tail end of the spark plug inclines towards the second inclined side. The spark plug is mounted on the cylinder head body through the underlying structure, so that the spark plug can avoid a silencer and an air filter, interference of the silencer and the air filter on the mounting position of the spark plug is reduced, and the spark plug is convenient to disassemble and assemble. And meanwhile, the risk that a user is scalded when disassembling and assembling the spark plug is also reduced and even avoided. The utility model further provides an engine which comprises the cylinder head assembly.

Description

Technical Field

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

[0002] In existing engines, the cylinder head body is usually installed on the cylinder body at an angle, and the spark plug is mostly installed on the cylinder head body in an upper structure, that is, the tail end of the spark plug is tilted toward the upturned side of the cylinder head body. Such a structural design will make the tail end of the spark plug close to the muffler, which is not convenient for disassembly and assembly of the spark plug, and the user is at risk of burns during disassembly and assembly. At the same time, there is a certain interference problem between the installation position of the spark plug and the installation position of the fuel tank, which further increases the difficulty of disassembly and assembly of the spark plug. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a cylinder head assembly and an engine, which facilitates the disassembly and assembly of the spark plug by improving the installation position of the spark plug.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cylinder head assembly, including a cylinder head body, which is arranged in an inclined manner, wherein the upward side of the cylinder head body forms a first inclined side, and the downward side of the cylinder head body forms a second inclined side, the cylinder head body includes a connected upper seat body and a lower seat body, the upper seat body is located above the lower seat body, and the lower seat body is provided with a mounting hole, and the mounting hole is close to the center position of the lower seat body; and a spark plug, which is inserted into the mounting hole, and the tail end of the spark plug is inclined toward the second inclined side.

[0005] Preferably, the other two sides of the cylinder head body are respectively formed with a windward side and a leeward side, a first air duct is formed between the upper seat body and the lower seat body, the first air duct penetrates the cylinder head body along the windward side toward the leeward side, and the mounting hole is located in the first air duct.

[0006] Preferably, a second air duct is formed between the upper seat body and the lower seat body, the second air duct penetrates the cylinder head body along the direction from the first inclined side toward the second inclined side, and the second air duct intersects with the first air duct.

[0007] Preferably, the mounting hole is located at the intersection of the first air duct and the second air duct.

[0008] Preferably, the outer wall of the upper seat body is recessed to form a clearance gap, and the clearance gap extends along the second inclined side toward the first inclined side.

[0009] Preferably, the tail end of the spark plug extends into the clearance gap.

[0010] Preferably, the clearance gap is communicated with the first air duct and the second air duct respectively.

[0011] Preferably, the clearance gap passes through the top of the upper seat body.

[0012] Preferably, the outer side wall of the lower seat body is provided with multiple layers of heat sinks.

[0013] The utility model also provides an engine, comprising the above-mentioned cylinder head assembly.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a cylinder head assembly, which arranges the mounting hole near the center of the lower seat body and makes the tail end of the spark plug tilt toward the second tilt side, so that the cylinder head assembly abandons the conventional structural design that the tail end of the spark plug tilts toward the first tilt side (that is, the spark plug is installed on the cylinder head body with an upper structure), and makes the spark plug installed on the cylinder head body with a lower structure, so that the spark plug can avoid the muffler and the air filter, reducing the interference of the muffler and the air filter on the installation position of the spark plug, so as to facilitate the disassembly and assembly of the spark plug. At the same time, it also reduces or even avoids the risk of burns to the user when disassembling the spark plug.

[0016] The utility model also discloses an engine, which uses the above-mentioned cylinder head assembly to install the spark plug on the cylinder head body in a bottom-mounted structure, making it convenient for users to disassemble and install the spark plug, thereby improving the maintenance efficiency of the whole machine. In addition, the heat dissipation capacity of the cylinder head body is enhanced, thereby improving the power and economy of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A structural schematic diagram of a cylinder head assembly provided in one embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the cylinder head body;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross section under the state;

[0021] Figure 4 It is a cross-sectional schematic diagram of the first air duct when the cylinder head body is placed horizontally;

[0022] Figure 5 A schematic diagram of the structure for making way for the gap;

[0023] Figure 6 It is a schematic diagram of the structure of the leeward side of the cylinder head body;

[0024] Reference numerals:

[0025] 10. Cylinder head body; 11. Upper seat body; 111. Clearance gap; 12. Lower seat body; 121. Mounting hole; 122. Heat sink; 13. First air duct; 14. Second air duct; 20. Spark plug; 31. First inclined side; 32. Second inclined side; 33. Windward side; 34. Leeward side. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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 invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0029] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Embodiment 1

[0033] like Figure 1-6 As shown, in one embodiment of the utility model, a cylinder head assembly is provided, including a cylinder head body 10 and a spark plug 20. The cylinder head body 10 is tiltedly mounted on a cylinder block (not shown in the drawings). The upturned side of the cylinder head body 10 forms a first tilted side 31, and the downturned side of the cylinder head body 10 forms a second tilted side 32. The first tilted side 31 is arranged opposite to the second tilted side 32. The cylinder head body 10 includes an upper seat body 11 and a lower seat body 12 connected to each other. The upper seat body 11 is located above the lower seat body 12. The lower seat body 12 is provided with a mounting hole 121, and the mounting hole 121 is close to the center of the lower seat body 12. The spark plug 20 is inserted into the mounting hole 121, and the rear end of the spark plug 20 is tilted toward the second tilted side 32.

[0034] The cylinder head assembly provided in this embodiment arranges the mounting hole 121 at the center of the lower seat body 12 and tilts the rear end of the spark plug 20 toward the second tilted side 32. This allows the cylinder head assembly to abandon the conventional structural design in which the rear end of the spark plug 20 tilts toward the first tilted side 31 (i.e., the spark plug 20 is mounted on the cylinder head body 10 in an upper structure), and allows the spark plug 20 to be mounted on the cylinder head body 10 in a lower structure. In this way, the spark plug 20 can avoid the muffler and the air filter, reducing the interference of the muffler and the air filter on the installation position of the spark plug 20, thereby facilitating the disassembly and assembly of the spark plug 20. At the same time, the risk of burns to the user when disassembling the spark plug 20 is reduced or even avoided.

[0035] In one embodiment, a windward side 33 and a leeward side 34 are respectively formed on the other two sides of the cylinder head body 10, and a first air duct 13 is formed between the upper seat body 11 and the lower seat body 12. The first air duct 13 penetrates the cylinder head body 10 along the windward side 33 toward the leeward side 34, and the mounting hole 121 and the spark plug 20 are located in the first air duct 13.

[0036] The cylinder head body 10 is respectively formed with a first inclined side 31, a second inclined side 32, a windward side 33 and a leeward side 34 around it, wherein the first inclined side 31 is arranged opposite to the second inclined side 32, and the windward side 33 is arranged opposite to the leeward side 34. The cooling airflow blows from the windward side 33 to the cylinder head body 10, and in the process of flowing through the cylinder head body 10, the cooling airflow will take away part of the heat of the cylinder head body 10, thereby realizing cooling of the cylinder head body 10.

[0037] A part of the cooling air flow will be blown into the first air duct 13, which can not only cool the spark plug 20 in the first air duct 13, but also cool the inner side wall of the cylinder head body 10. The cooling air flow has better permeability through the cylinder head body 10, and the area for heat exchange between the cylinder head body 10 and the cooling air flow is also larger. In this way, the cooling and heat dissipation effects of the cylinder head body 10 are improved.

[0038] In one embodiment, a second air duct 14 is formed between the upper seat body 11 and the lower seat body 12. The second air duct 14 penetrates the cylinder head body 10 along the direction from the first inclined side 31 to the second inclined side 32, and the second air duct 14 intersects with the first air duct 13. The cooling airflow can flow inside the cylinder head body 10 through the second air duct 14. The design of the second air duct 14 further increases the area for heat exchange between the cylinder head body 10 and the cooling airflow, thereby further improving the cooling and heat dissipation effect of the cylinder head body 10, reducing the wear of the valve and the valve seat ring, and improving the power and economy of the whole machine operation.

[0039] In one embodiment, the mounting hole 121 is located at the intersection of the first air duct 13 and the second air duct 14. The airflow in the first air duct 13 and the second air duct 14 can take away part of the heat of the spark plug 20 during the flow, so that the spark plug 20 can be kept at a normal operating temperature, thereby ensuring the normal operation of the engine.

[0040] In one embodiment, the outer wall of the upper seat body 11 is recessed to form a clearance gap 111, which extends along the second inclined side 32 toward the first inclined side 31, and is connected to the first air duct 13 and the second air duct 14 respectively, and the clearance gap 111 passes through the top of the upper seat body 11. Under the premise of ensuring the overall structural strength, the design of the clearance gap 111, the first air duct 13 and the second air duct 14 not only increases the distance between the upper seat body 11 and the lower seat body 12, but also reduces the overall weight of the cylinder head body 10, thereby reducing the manufacturing cost.

[0041] In one embodiment, the rear end of the spark plug 20 extends into the clearance gap 111 , and the user can conveniently disassemble and assemble the spark plug 20 by using the clearance gap 111 and the second air duct 14 , thereby improving the efficiency of disassembling and assembling the spark plug 20 .

[0042] In one embodiment, the outer wall of the lower seat body 12 is provided with a plurality of heat sinks 122 . Since the lower seat body 12 is close to the combustion chamber, the heat dissipation capacity of the lower seat body 12 is enhanced by designing the plurality of heat sinks 122 on the lower seat body 12 .

[0043] Embodiment 2

[0044] In another embodiment of the utility model, an engine is provided, including the cylinder head assembly of the above embodiment 1. By using the above cylinder head assembly, the spark plug 20 is installed on the cylinder head body 10 in a lower structure, which is convenient for users to disassemble and assemble the spark plug 20, thereby improving the maintenance efficiency of the whole machine. In addition, the heat dissipation capacity of the cylinder head body 10 is also enhanced, so that the power and economy of the whole machine are improved.

[0045] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A cylinder head assembly, characterized in that: include: The cylinder head body is arranged in an inclined manner, wherein the upwardly tilted side of the cylinder head body forms a first inclined side, and the downwardly tilted side of the cylinder head body forms a second inclined side, wherein the cylinder head body comprises an upper seat body and a lower seat body connected to each other, wherein the upper seat body is located above the lower seat body, and wherein the lower seat body is provided with a mounting hole, wherein the mounting hole is close to the center position of the lower seat body; and A spark plug is inserted into the mounting hole, and a tail end of the spark plug is inclined toward the second inclined side.

2. The cylinder head assembly according to claim 1, characterized in that: The other two sides of the cylinder head body are respectively formed with a windward side and a leeward side, a first air duct is formed between the upper seat body and the lower seat body, the first air duct penetrates the cylinder head body along the direction from the windward side to the leeward side, and the mounting hole is located in the first air duct.

3. The cylinder head assembly according to claim 2, characterized in that: A second air duct is formed between the upper seat body and the lower seat body. The second air duct penetrates the cylinder head body in a direction from the first inclined side toward the second inclined side. The second air duct intersects with the first air duct.

4. The cylinder head assembly according to claim 3, characterized in that: The mounting hole is located at the intersection of the first air duct and the second air duct.

5. The cylinder head assembly according to claim 3, characterized in that: The outer wall of the upper seat body is recessed to form a clearance gap, and the clearance gap extends along the second inclined side toward the first inclined side.

6. The cylinder head assembly according to claim 5, characterized in that: The tail end of the spark plug extends into the clearance gap.

7. The cylinder head assembly according to claim 5, characterized in that: The clearance gap is communicated with the first air duct and the second air duct respectively.

8. The cylinder head assembly according to claim 5, characterized in that: The clearance notch passes through the top of the upper seat body.

9. The cylinder head assembly according to claim 1, characterized in that: The outer side wall of the lower seat body is provided with multiple layers of heat sinks.

10. An engine, characterized in that: A cylinder head assembly comprising any one of claims 1-9.

Images