CN108131210A - Cylinder head and engine - Google Patents

Abstract

The invention discloses a kind of cylinder head and engines, are related to technical field of engines.The engine includes integrally formed cylinder head matrix and support base, and support base is located at cylinder head intrinsic silicon.Support base is provided with cam axle mount and rocking arm mounting portion, and the side wall of cylinder head matrix is provided with water pump mounting portion.Cam axle mount includes the first cam shaft mounting hole and the second cam shaft mounting hole, and water pump mounting portion includes water pump mounting hole, and the first cam shaft mounting hole, the second cam shaft mounting hole and water pump mounting hole are coaxially disposed in the horizontal direction.Rocking arm mounting portion includes the first rocking arm mounting portion and the second rocking arm mounting portion that are arranged in parallel, and the first rocking arm mounting portion and the second rocking arm mounting portion are located at the both sides of cam axle mount respectively.It is cylinder head reasonable design, compact-sized, it manufactures, is easy to assembly, preferably by water pump mounting portion, cam axle mount and rocking arm mounting portion and cylinder head integrated design, simplifying assembly technology, reduction production cost.

Description

Cylinder head and engine

technical field

The invention relates to the technical field of engines, in particular to a cylinder head and an engine.

Background technique

Water cooling is to use water (or antifreeze) as a cooling medium to take away the heat from high-temperature parts of the engine to ensure the normal operating temperature of the engine. The water cooling system consists of water pumps, radiators, fans, thermostats, water jackets and water pipes. The coolant of the water-cooling system is in the water jacket of the engine. After absorbing the heat of the high-temperature parts, the temperature rises. The radiator is cooled by the fan and the windward airflow, and then the cooled coolant is pumped into the water jacket for circulating cooling.

The water pump of most existing water-cooled engines is installed on the tank cover or cylinder head, and the radiator is arranged on the whole vehicle, which will lead to long water pipes in the entire cooling system and poor cooling effect, which will affect the shape of the vehicle and affect the function of the vehicle body. limit.

In order to improve the cooling effect and facilitate the functional layout of the vehicle, the radiator is assembled on the engine case, and how the water pump mounting seat, camshaft, and valve rocker arm support are integrated with the cylinder head.

Contents of the invention

The object of the present invention is to provide a cylinder head, which can integrate the design of the water pump installation part, the camshaft installation part and the rocker arm installation part with the cylinder head, and the coaxial design of the camshaft installation hole and the water pump installation hole, avoiding the engine oil leakage Risk, while meeting the needs of production and assembly, the structure is compact, the structure of the cylinder head is simplified, the assembly requirements of the engine are met, the assembly process is simplified, the production cost is saved, and the product quality is improved.

Embodiments of the present invention are achieved like this:

Based on the above purpose, an embodiment of the present invention provides a cylinder head, including an integrally formed cylinder head base and a support base, the support base is located inside the cylinder head base and forms a cavity with the cylinder head base ;

The support seat is provided with a camshaft installation part inside it and a rocker arm installation part at its top, and the side wall of the cylinder head base is provided with a water pump installation part;

The camshaft installation part includes a first camshaft installation hole and a second camshaft installation hole, the water pump installation part includes a water pump installation hole, the first camshaft installation hole, the second camshaft installation hole and the The installation holes of the water pump are arranged coaxially along the horizontal direction;

The rocker arm installation part includes a first rocker arm installation part and a second rocker arm installation part arranged in parallel, and the first rocker arm installation part and the second rocker arm installation part are respectively located at the ends of the camshaft installation part. sides.

In addition, the cylinder head provided according to the embodiment of the present invention may also have the following additional technical features:

In an optional embodiment of the present invention, the support seat includes a first support and a second support arranged in parallel, the first camshaft installation hole is opened in the first support, and the second camshaft A shaft mounting hole is opened in the second support;

The first support is provided with a first extension extending toward the second support, and the second support is provided with a first extension extending toward the first support and located on the same horizontal plane as the first extension. The second extension part, the first extension part and the second extension part are respectively located on both sides of the central axis of the first camshaft installation hole and the second camshaft installation hole.

In an optional embodiment of the present invention, the second camshaft installation hole is located between the first camshaft installation hole and the water pump installation hole;

The diameter of the water pump installation hole is larger than the diameter of the second camshaft installation hole, and the diameter of the second camshaft installation hole is larger than the diameter of the first camshaft installation hole.

In an optional embodiment of the present invention, the top of the second support is provided with a camshaft pressure plate fixing portion, and the camshaft pressure plate fixing portion is provided with a pressure plate fixing hole, and the axis of the pressure plate fixing hole is in line with the first The axes of the two camshaft mounting holes are perpendicular and intersect.

In an optional embodiment of the present invention, the first support is provided with a camshaft auxiliary assembly hole communicating with the first camshaft installation hole, and the axis of the camshaft auxiliary assembly hole is aligned with the first camshaft installation hole. The axes of the shaft mounting holes coincide.

In an optional embodiment of the present invention, the first rocker arm installation part is provided with a first rocker shaft installation hole, and the second rocker arm installation part is provided with a second rocker shaft installation hole;

The first rocker arm shaft installation hole is sequentially arranged through the first support, the second extension part and the second support, and the second extension part is vertically provided with a first rocker arm positioning hole , the axis of the first rocker arm positioning hole is perpendicular to and intersects the axis of the first rocker arm shaft installation hole;

The second rocker arm shaft installation hole is sequentially arranged through the first support, the first extension part and the second support, and the first extension part is vertically provided with a second rocker arm positioning hole , the axis of the second rocker arm positioning hole is perpendicular to and intersects the axis of the second rocker arm shaft installation hole.

In an optional embodiment of the present invention, a first rocker arm positioning step for installing the first rocker arm is provided between the first support and the second extension, and the second support and the A second rocker arm positioning step for installing the second rocker arm is arranged between the first extension parts;

The plane where the first rocker arm positioning step is located is parallel or coplanar with the plane where the second rocker arm positioning step is located, and is parallel to the bottom wall of the cylinder head base.

In an optional embodiment of the present invention, the axes of the first rocker shaft installation hole and the second rocker shaft installation hole are arranged in parallel, and are respectively located in the first camshaft installation hole and the Both sides of the central axis of the second camshaft mounting hole;

The horizontal plane where the first rocker arm positioning step and the second rocker arm positioning step are located is closer to the bottom of the cylinder head base relative to the first rocker arm shaft installation hole and the second rocker arm shaft installation hole. wall.

In an optional embodiment of the present invention, the water pump installation part further includes a water pump fixing part, and the water pump fixing part is located on a side of the cylinder head base away from the support seat;

The number of the water pump fixing parts is multiple and they are arranged around the circumference of the water pump installation hole.

The present invention also provides an engine, including a camshaft assembly, a water pump assembly, a rocker arm assembly and a cylinder head;

The camshaft assembly is fixed on the camshaft installation part, the rocker arm assembly is fixed on the rocker arm installation part, and the water pump assembly is fixed on the water pump installation part through the camshaft assembly.

The beneficial effects of the embodiments of the present invention are: the cylinder head has a reasonable design, a compact structure, and is convenient for production and assembly. It satisfies the coaxial setting of the water pump installation hole, the first camshaft installation hole and the second camshaft installation hole, which better avoids the oil leakage risk of the existing engine, and at the same time satisfies the camshaft installation part, rocker arm installation part and water pump installation part. The integrated design of the cylinder head can better solve the problems of the machining of the rocker shaft hole, the limit of the rocker shaft, the limit of the camshaft bearing, and the difficult assembly of the camshaft and the rocker arm, which simplifies the assembly process and reduces the production cost .

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of a first viewing angle of a cylinder head provided by Embodiment 1 of the present invention;

Fig. 2 is a structural schematic diagram of a second viewing angle of the cylinder head provided by Embodiment 1 of the present invention;

Fig. 3 is a sectional view of the cylinder head provided by Embodiment 1 of the present invention;

Fig. 4 is a structural schematic diagram of the third viewing angle of the cylinder head provided by Embodiment 1 of the present invention;

Fig. 5 is a structural schematic diagram of the fourth viewing angle of the cylinder head provided by Embodiment 1 of the present invention;

Fig. 6 is a cross-sectional view of the assembled cylinder head and its components in the engine provided by Embodiment 2 of the present invention.

Icon: 100-cylinder head; 10-cylinder head base; 103-first installation surface; 105-spark plug installation hole; 1052-first inclined surface; 1053-second inclined surface; 106-second installation surface; 107-height 109-low side; 11-water pump installation part; 113-water pump installation hole; 115-water pump fixing part; 12-support seat; 123-first support; 124-first extension; 125-second support ;126-the second extension part; 13-the camshaft installation part; 132-the first camshaft installation hole; 134-the second camshaft installation hole; 136-the camshaft auxiliary assembly hole; 138-the camshaft pressure plate fixing part; 139 - clamping plate fixing hole; 14 - rocker arm installation part; 142 - first rocker arm shaft mounting hole; 143 - first rocker arm positioning step; 145 - second rocker arm shaft mounting hole; 146 - second rocker arm positioning step; 147-positioning hole of the second rocker arm; 148-positioning hole of the first rocker arm; 15-chain chamber; 16-water pump assembly; 17-spark plug assembly; 18-camshaft assembly.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "first", "second" and so on are only used for distinguishing descriptions, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

1 to 5 correspond to Embodiment 1 of the present invention, and FIG. 6 corresponds to Embodiment 2 of the present invention. The technical solution of the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

Example 1

FIG. 1 is a structural schematic view of a cylinder head 100 provided by this embodiment at a first viewing angle. Please refer to Figure 1. The cylinder head 100 includes an integrally formed cylinder head base 10 and a support base 12 , wherein the support base 12 is located inside the cylinder head base 10 , and the support base 12 and the cylinder head base 10 form a cavity.

FIG. 2 is a schematic structural diagram of the cylinder head 100 provided by the present embodiment at a second viewing angle. Please refer to Figure 2. The cylinder head base 10 includes opposite first installation surfaces 103 and second installation surfaces 106, wherein the first installation surface 103 is located at the top of the cylinder head base 10, the second installation surface 106 is located at the bottom of the cylinder head base 10, and the cylinder head base 10 During installation, the second mounting surface 106 is matched with the cylinder block, the cylinder head 100 is fixedly connected with the cylinder block through the second mounting surface 106, the first mounting surface 103 is matched with the cylinder head, and the cylinder head 100 is connected through the first mounting surface 103 and the cylinder head. The cylinder head is fixedly connected.

The first installation surface 103 is inclined relative to the second installation surface 106. When the second installation surface 106 is horizontally arranged, an acute angle is formed between the second installation surface 106 and the first installation surface 103, so that the cylinder head base 10 forms an opposite high side 107. and low side 109.

Fig. 3 is a cross-sectional view of the cylinder head 100 provided by this embodiment. Please refer to Figure 3. In the overall structure of the cylinder head 100 , the chain cavity 15 is opened on the high side 107 , and the spark plug installation hole 105 is opened on the low side 109 . Specifically, a chain cavity 15 is provided between the cylinder head base 10 and the support seat 12, the chain cavity 15 is vertically opened from the first installation surface 103 to the second installation surface 106, and the spark plug installation hole 105 is located near the cylinder head base 10. One side of the second installation surface 106, when set, the side wall of the cylinder head base 10 located at the low side 109 includes a first inclined surface 1052 and a second inclined surface 1053, wherein the first inclined surface 1052 extends from the first installation surface 103 to The bottom is concavely inclined, and the second inclined surface 1053 is concavely inclined upward from the second mounting surface 106. The intersection of the first inclined surface 1052 and the second inclined surface 1053 forms a storage space for installing the spark plug assembly, and the spark plug installation hole 105 is opened. Regarding the second inclined surface 1053, in order to avoid interference of the spark plug during assembly, the opening angle of the spark plug mounting hole 105, the inclined angle of the first inclined surface 1052, and the inclined angle of the second inclined surface 1053 should be designed reasonably so that the spark plug assembly can be smoothly It is installed in the spark plug installation hole 105 , and the leaking part of the spark plug assembly will not interfere with the first inclined surface 1052 .

In this embodiment, the first inclined surface 1052 and the second inclined surface 1053 are substantially vertical, and the included angle thereof is about 90°, and the spark plug installation hole 105 is opened perpendicular to the second inclined surface 1053 . It can be understood that the inclined direction of the first inclined surface 1052 and the inclined direction of the second inclined surface 1053 can also be other directions, and the angle between the first inclined surface 1052 and the second inclined surface 1053 can also be other angles , the opening position and opening angle of the spark plug mounting hole 105 can be determined according to the actual situation, and there is no specific limitation, as long as the spark plug assembly is smoothly installed in the spark plug mounting hole 105, the structure of this embodiment meets the assembly requirements of the spark plug assembly , and there will be no interference, and at the same time, it is convenient to assemble, saves space, and has a compact structure.

FIG. 4 is a schematic structural diagram of the cylinder head 100 provided by the present embodiment from a third viewing angle. Please refer to Figure 4. The cylinder head base 10 includes a water pump installation part 11 located on the above-mentioned high side 107, and the water pump installation part 11 includes a water pump installation hole 113 and a water pump fixing part 115, wherein the water pump installation hole 113 is opened in the cylinder head base near the first installation surface 103 10, and the central axis of the water pump installation hole 113 is parallel to the second installation surface 106, so that the water pump installation hole 113 is arranged horizontally. The number of water pump fixing parts 115 is multiple, and the multiple water pump fixing parts 115 protrude from the side wall of the cylinder head base 10 and are located on the side of the cylinder head base 10 away from the support seat 12. The multiple water pump fixing parts 115 are arranged around the Around the water pump installation hole 113.

In this embodiment, the number of water pump fixing parts 115 is three, and the three water pump fixing parts 115 are arranged in the middle and lower part of the water pump installation hole 113 according to the realization of the cylinder head base 10 and are arranged at intervals for the assembly of the water pump assembly 16. fixed.

FIG. 5 is a schematic structural view of the cylinder head 100 provided by the present embodiment from a fourth viewing angle. Please refer to Figure 2, Figure 3 and Figure 5. The support base 12 is located inside the cylinder head base 10 and is provided with a camshaft installation part 13 and a rocker arm installation part 14. The camshaft installation part 13 is located inside the support base 12 and is used to fix the camshaft. The above-mentioned water pump assembly 16 passes through the camshaft The shaft is fixedly arranged on the cylinder head 100, and the rocker arm installation part 14 is located on the top of the support seat 12 for setting the rocker arm.

Specifically, the camshaft installation part 13 includes a first camshaft installation hole 132 and a second camshaft installation hole 134, the first camshaft installation hole 132 and the second camshaft installation hole 134 are opened horizontally, and the first camshaft installation hole 132 , the second camshaft mounting hole 134 and the water pump mounting hole 113 are arranged coaxially along the horizontal direction.

2 and 5, the support seat 12 includes a first support 123 and a second support 125 arranged in parallel, the first support 123 is close to the above-mentioned low side 109, and the second support 125 is close to In the above-mentioned high side 107, the first support 123 is provided with a first extension 124 extending toward the second support 125, and the second support 125 is provided with a second extension 126 extending toward the first support 123, wherein, The second extension portion 126 and the first extension portion 124 are located on the same horizontal plane. The first extension portion 124 and the second extension portion 126 are located on two sides of the central axis of the first camshaft installation hole 132 and the second camshaft installation hole 134 respectively.

The first support 123 is provided with the above-mentioned first camshaft installation hole 132, and the second support 125 is provided with the above-mentioned second camshaft installation hole 134, that is, the second camshaft installation hole 134 is located in the first camshaft installation hole 132. And between the water pump installation hole 113.

When the camshaft assembly 18 and the water pump assembly 16 are assembled with the cylinder head 100, the assembly direction of the camshaft assembly 18 and the water pump assembly 16 is the same, they are installed from the high side 107 to the low side 109 of the cylinder head base 10, so The diameter of the first camshaft installation hole 132 is smaller than the diameter of the second camshaft installation hole 134 , and the diameter of the second camshaft installation hole 134 is smaller than the diameter of the water pump installation hole 113 .

Please continue to refer to FIG. 1, the first support 123 is provided with a camshaft auxiliary assembly hole 136 that passes through the first camshaft installation hole 132, and the camshaft auxiliary assembly hole 136 can be a round hole, a semicircle hole, etc., wherein, The axis of the camshaft auxiliary fitting hole 136 coincides with the axis of the first camshaft mounting hole 132 . It can be understood that the camshaft auxiliary assembly hole 136 can also be a hole of other shapes, as long as it communicates with the first camshaft installation hole 132 and does not interfere with the installation position of other parts, it can assist the camshaft to complete the assembly. Yes, the specific shape and position are not limited.

Please continue to refer to FIG. 5, the top of the second support 125 is provided with a camshaft pressure plate fixing portion 138, and the camshaft pressure plate fixing portion 138 is provided with a pressure plate fixing hole 139, wherein the pressure plate fixing hole 139 is vertically opened downwards, the The axis of the pressing plate fixing hole 139 is perpendicular to and intersects the axis of the second camshaft mounting hole 134. In this embodiment, the pressing plate fixing hole 139 is a threaded hole, and the camshaft pressing plate is fixed on the second support 125 with screws. The shaft pressing plate is used for laterally positioning the assembled camshaft assembly 18 .

Please continue to refer to Figure 1 and Figure 5. The support base 12 is also provided with a rocker arm installation part 14, and the rocker arm installation part 14 includes a first rocker arm installation part and a second rocker arm installation part arranged in parallel, wherein the first rocker arm installation part is provided with a first rocker arm shaft The installation hole 142 and the second rocker arm installation portion define a second rocker arm shaft installation hole 145 .

An accommodating space for installing the first rocker arm is provided between the first extension portion 124 and the second support 125 , and a first rocker arm positioning step 143 is provided between the first extension portion 124 and the second support 125 , the first rocker arm is set on the first rocker arm positioning step 143 for initial positioning; between the first support 123 and the second extension 126, there is an accommodation space for installing the second rocker arm, and the first support 123 A second rocker arm positioning step 146 is disposed between the second extension portion 126 , and the second rocker arm is disposed on the second rocker arm positioning step 146 for initial positioning.

The plane where the first rocker arm positioning step 143 is located is parallel or coplanar with the plane where the second rocker arm positioning step 146 is located, and meanwhile, the plane where the rocker arm positioning step is located is parallel to the bottom wall of the cylinder head base 10 . In this embodiment, the rocker arm positioning step is parallel to the above-mentioned second installation surface 106 .

Whether the plane where the first rocker arm positioning step 143 is located is parallel or coplanar with the plane where the second rocker arm positioning step 146 is located is mainly selected according to the installation structure and size of the first rocker arm and the second rocker arm. When the structural dimensions of the first rocker arm and the second rocker arm mounting position are the same, the plane where the first rocker arm positioning step 143 is located is coplanar with the plane where the second rocker arm positioning step 146 is located; When the structural size of the installation part of the rocker arm is different, according to assembly requirements, the plane where the first rocker arm positioning step 143 is located is parallel to the plane where the second rocker arm positioning step 146 is located.

Optionally, the axis of the first rocker shaft mounting hole 142 and the axis of the second rocker shaft mounting hole 145 are arranged in parallel, and are located at the center axis of the first camshaft mounting hole 132 and the second camshaft mounting hole 134 respectively. On both sides, the first rocker arm positioning step 143 and the second rocker arm positioning step 146 are parallel or coplanar, the first rocker arm is the intake rocker arm, the second rocker arm is the exhaust rocker arm, or the first rocker arm The second rocker arm is an exhaust rocker arm, and the second rocker arm is an intake rocker arm, so that the intake rocker arm and the exhaust rocker arm are arranged on both sides of the camshaft assembly, and the structure is compact.

Wherein, the first rocker arm shaft installation hole 142 is sequentially opened through the first support 123 , the second extension portion 126 and the second support 125 , and the second rocker shaft installation hole 145 is sequentially opened through the above-mentioned first support. 123, the first extension part 124 and the second support 125, and the first rocker shaft installation hole 142 and the second rocker shaft installation hole 145 are respectively located on both sides of the camshaft installation part 13, the first rocker shaft installation hole The axis of 142 and the axis of the second rocker shaft mounting hole 145 are arranged in parallel.

Optionally, the first extension part 124 is vertically provided with a second rocker arm positioning hole 147, the axis of the second rocker arm positioning hole 147 is perpendicular to and intersects with the axis of the second rocker arm shaft installation hole 145, and is passed through by the fixing member. Set in the second rocker arm positioning hole 147 to fix the second rocker arm shaft on the cylinder head 100; the second extension part 126 is vertically provided with the first rocker arm positioning hole 148, the axis of the first rocker arm positioning hole 148 is aligned with the first rocker arm positioning hole 148 The axes of a rocker shaft mounting hole 142 are vertical and intersect.

When the intake rocker arm and the exhaust rocker arm are installed on the rocker arm installation part 14, the rocker arm is first arranged on the rocker arm positioning step, then the rocker arm shaft is passed through the rocker arm shaft installation hole and the rocker arm, and finally the fixing piece is used The rocker arm shaft is fixed relative to the cylinder head 100 at the rocker arm positioning hole, so that the rocker arm is assembled to the rocker arm mounting portion 14 of the cylinder head 100 . Therefore, the horizontal plane where the first rocker arm positioning step 143 and the second rocker arm positioning step 146 are located is close to the above-mentioned second mounting surface 106 relative to the first rocker arm shaft installation hole 142 and the second rocker arm shaft installation hole 145, and also It is close to the bottom wall of the cylinder head base 10, that is, the plane where the first rocker arm positioning step 143 and the second rocker arm positioning step 146 are located is lower than the rocker shaft installation hole, so that the rocker shaft can pass through the rocker shaft at the same time. bore and rocker.

Because the existing water-cooled engine often arranges the radiator on the whole vehicle, the shape and function of the whole vehicle are limited. The water pump is installed on the tank cover or cylinder head, and the radiator is located on the whole vehicle, resulting in long water pipes in the cooling system and poor cooling effect. In order to improve the cooling effect and facilitate the functional layout of the vehicle, the radiator is installed on the engine case, and the water pump, radiator and chain chamber 15 are arranged on the right side of the engine. The water pump is driven by the camshaft, and the split cam bracket or Split water pump support. However, the cylinder head 100 with this structure is difficult to machine, and the manufacture and assembly are complicated, the process is complicated, the cost is high, and the interchangeability is poor. With the split cam bracket structure, it is difficult to ensure the concentricity of the camshaft hole and the water pump shaft hole, and oil leakage and other problems often occur at the water pump mounting seat due to misalignment.

The first installation surface 103 of the cylinder head 100 provided in this embodiment is set as an inclined surface with a certain angle with respect to the second installation surface 106, and the chain cavity 15 is set as the high side 107 to ensure the water pump installation seat driven by the camshaft assembly 18 It is an integral support. At the same time, the camshaft installation part 13 and the rocker arm installation part 14 are integrally designed with the cylinder head 100, so that the cylinder head 100 has a compact structure and is easy to assemble. The spark plug mounting hole 105 is arranged on the low side 109, which better solves the problem of machining and assembling the rocker shaft mounting hole.

The beneficial effects of the cylinder head 100 provided by Embodiment 1 of the present invention are: reasonable design, compact structure, and convenient production and assembly. Satisfied that the water pump installation hole 113, the first camshaft installation hole 132 and the second camshaft installation hole 134 are arranged concentrically, which better avoids the oil leakage risk of the existing engine, and satisfies the requirements of the camshaft installation part 13, the rocker arm installation part 14 and the water pump. The mounting part 11 and the cylinder head 100 are designed in one piece, and at the same time, the machining of the rocker shaft hole, the limit of the rocker shaft, the limit of the camshaft bearing, and the difficult assembly of the camshaft and the rocker arm are solved, and the assembly process is simplified. Reduced production costs.

Example 2

Embodiment 2 provides an engine, including a camshaft assembly 18, a rocker arm assembly, a water pump assembly 16, a spark plug assembly 17, and the cylinder head 100 provided in Embodiment 1. FIG. 6 is a cross-sectional view of the engine in Embodiment 2. Please refer to Figure 6.

The spark plug assembly 17 is fixedly arranged in the spark plug installation hole 105, and the leaking part of the spark plug assembly 17 is just located in the accommodation space of the lower side 109 of the cylinder head base 10, which is convenient for assembly and does not interfere.

The camshaft assembly 18 is fixedly arranged on the camshaft mounting portion 13 of the support base 12. Specifically, the first bearing is embedded in the first camshaft mounting hole 132, and the second bearing is embedded in the second camshaft mounting hole 134. The first bearing and the second bearing are coaxially arranged, and the water pump assembly 16 is embedded in the water pump installation part 11 of the cylinder head base 10 and is fixedly connected with the camshaft assembly 18, and is fixed with the water pump assembly 16 through the water pump fixing part 115, so that the water pump assembly 16 is located on the high side 107 of the cylinder head base 10 and assembled firmly.

The rocker arm assembly is fixed on the rocker arm mounting part 14 of the support base 12, realizing the integrated design of the water pump mounting seat and the cylinder head 100, satisfying the concentricity between the water pump mounting hole 113 and the camshaft mounting hole, and the installation of the camshaft mounting part 13 and the rocker arm. The machining problem after the integrated design of the part 14 and the cylinder head 100 avoids the risk of oil leakage of the engine, makes the cylinder head 100 compact in structure, easy to assemble, simplifies the assembly process, saves costs, and improves the quality of the engine.

It should be noted that, in the case of no conflict, the features in the embodiments of the present invention can be combined with each other.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a kind of cylinder head, which is characterized in that including integrally formed cylinder head matrix and support base, the support base is located at described Cylinder head intrinsic silicon and form cavity between the cylinder head matrix；

The support base is provided with cam axle mount on its interior and the rocking arm mounting portion at the top of it, the cylinder head The side wall of matrix is provided with water pump mounting portion；

The cam axle mount includes the first cam shaft mounting hole and the second cam shaft mounting hole, and the water pump mounting portion includes Water pump mounting hole, the first cam shaft mounting hole, the second cam shaft mounting hole and water pump mounting hole edge are horizontal Direction is coaxially disposed；

The rocking arm mounting portion includes the first rocking arm mounting portion and the second rocking arm mounting portion that are arranged in parallel, the first rocking arm peace Dress portion and the second rocking arm mounting portion are located at the both sides of the cam axle mount respectively.

2. cylinder head according to claim 1, which is characterized in that the support base include the first bearing for being arranged in parallel and Second bearing, the first cam shaft mounting hole are opened in first bearing, and the second cam shaft mounting hole is opened in institute State the second bearing；

First bearing is provided with the first extension extended to second bearing, and second bearing is provided with to described First bearing extension and with first extending part in the second extension of same level, first extension and institute State the second extension is located at the central axis of the first cam shaft mounting hole and the second cam shaft mounting hole respectively two Side.

3. cylinder head according to claim 2, which is characterized in that it is convex that the second cam shaft mounting hole is located at described first It takes turns between shaft mounting hole and the water pump mounting hole；

The diameter dimension of the water pump mounting hole is more than the diameter dimension of the second cam shaft mounting hole, second camshaft The diameter dimension of mounting hole is more than the diameter dimension of the first cam shaft mounting hole.

4. cylinder head according to claim 3, which is characterized in that be provided with cam shaft pressuring plate at the top of second bearing Fixed part, the cam shaft pressuring plate fixed part offer pressing plate mounting hole, the axis of the pressing plate mounting hole and described second convex The axis for taking turns shaft mounting hole is vertical and intersecting.

5. cylinder head according to claim 3, which is characterized in that first bearing offers and first camshaft The camshaft auxiliary pilot hole of mounting hole connection, the axis of the camshaft auxiliary pilot hole and the first cam shaft mounting hole Axis overlap.

6. cylinder head according to claim 2, which is characterized in that the first rocking arm mounting portion offers the first rocker arm shaft Mounting hole, the second rocking arm mounting portion offer the second rocking arm shaft mounting hole；

The first rocking arm shaft mounting hole penetrates through successively is set to first bearing, second extension and described second Bearing, second extension are vertically provided with the first rocking arm location hole, the axis of the first rocking arm location hole and described the The axis of one rocking arm shaft mounting hole is vertical and intersecting；

The second rocking arm shaft mounting hole penetrates through successively is set to first bearing, first extension and described second Bearing, first extension are vertically provided with the second rocking arm location hole, the axis of the second rocking arm location hole and described the The axis of two rocking arm shaft mounting holes is vertical and intersecting.

7. cylinder head according to claim 6, which is characterized in that set between first bearing and second extension The first rocking arm positioning step for installing the first rocking arm is equipped with, is provided between second bearing and first extension For installing the second rocking arm positioning step of the second rocking arm；

Plane where the first rocking arm positioning step is parallel with the plane where the second rocking arm positioning step or common Face, and it is parallel with the bottom wall of the cylinder head matrix.

8. cylinder head according to claim 7, which is characterized in that the axis of the first rocking arm shaft mounting hole and described The axis of two rocking arm shaft mounting holes is arranged in parallel and is located at the first cam shaft mounting hole and second camshaft peace respectively Fill the both sides of the central axis in hole；

Horizontal plane where the first rocking arm positioning step and the second rocking arm positioning step is relative to first rocking arm Shaft mounting hole and the second rocking arm shaft mounting hole are close to the bottom wall of the cylinder head matrix.

9. cylinder head according to any one of claims 1 to 8, which is characterized in that the water pump mounting portion further includes water pump Fixed part, the water pump fixed position is in the cylinder head matrix away from the side of the support base；

The quantity of the water pump fixed part is circumferential directions that are multiple and being located on the water pump mounting hole.

10. a kind of engine, which is characterized in that including cam assembly, water pump complement, rocker arm assembly and claim 1-9 Cylinder head described in any one；

The cam assembly is fixedly installed on the cam axle mount, and the rocker arm assembly is fixedly installed on the rocking arm peace Dress portion, the water pump complement are fixedly installed on the water pump mounting portion by the cam assembly.