Motorcycle cylinder block

Abstract

The utility model relates to the technical field of cylinders, in particular to a motorcycle cylinder block which comprises a cylinder body. The end face of the matching end of the air cylinder body is provided with a piston cavity which is axially through; a cooling water tank designed to be of an annular structure is arranged outside the outer contour of the piston cavity on the end face of the matching end of the air cylinder body, a cooling water inlet is formed in the position, corresponding to the inner end of the cooling water tank, of the surface of one side of the air cylinder body, and the cooling water inlet communicates with the inner end of the cooling water tank. A supporting ring plate which is integrally designed to be of an annular plate-shaped structure is arranged between two side walls of the outer end of the cooling water tank, and a through hole penetrating through the supporting ring plate in the thickness direction is formed in the supporting ring plate. The utility model has the characteristics that the structural design is simpler and more reasonable, the vibration noise can be better reduced, and the water inlet is more uniform so as to improve the cooling effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cylinder, especially a motorcycle cylinder body. BACKGROUND

[0002] The motorcycle cylinder is a core component of the motorcycle engine, and can be divided into a general cylinder body, a gantry cylinder body and a tunnel cylinder body according to different installation plane positions of the cylinder body and an oil pan. The cylinder body material, machining precision and structure determine its performance. The cylinder body must be resistant to high temperature, corrosion and wear to cope with the friction caused by high-temperature and high-pressure working conditions and the reciprocating motion of the piston. In terms of cooling, the cylinder body generally has water cooling and air cooling.

[0003] The existing motorcycle cylinder structure in the water cooling form has the following shortcomings in the working process: 1. The original cylinder body water tank part has no support, and vibration noise is easily generated when the piston is running at high speed in the cylinder body; 2. The cooling water enters the water channel unevenly, the water inflow on both sides is different, and the cooling effect is poor. UTILITY MODEL CONTENTS

[0004] In view of the above defects of the prior art, the technical problem to be solved by the utility model is how to provide a motorcycle cylinder body with a more simple and reasonable structure design, which can better reduce vibration noise, make water inflow more uniform to improve the cooling effect.

[0005] To achieve the above-mentioned purpose, the utility model provides a motorcycle cylinder body, which comprises a cylinder body, an axial piston cavity is arranged on the cooperation end face of the cylinder body, a cooling water tank with an annular structure is arranged outside the outer contour of the piston cavity on the cooperation end face of the cylinder body, a cooling water inlet is arranged on the side surface of the cylinder body and corresponds to the inner end of the cooling water tank, and the cooling water inlet is in communication with the inner end of the cooling water tank, characterized in that a support ring plate with a whole circular plate structure is arranged between the two side walls of the outer end of the cooling water tank, and a through hole penetrating the thickness direction of the support ring plate is arranged on the support ring plate.

[0006] In this way, in the motorcycle cylinder body structure, the support ring plate with a whole circular plate structure is arranged between the two side walls of the outer end of the cooling water tank, and the through hole penetrating the thickness direction of the support ring plate is arranged on the support ring plate, so that the support between the two side walls of the outer end of the cooling water tank is formed without affecting the circulation and flow of the cooling water, the stability is improved, the vibration noise is reduced when the piston is running at high speed in the cylinder body, and the structural strength of the cylinder body is also improved to increase the service life.

[0007] As optimization, mounting step surfaces in annular structure design are respectively formed on the two inner side walls of the outer end of the cooling water tank, and the inner side surfaces of the support ring plates are respectively arranged on the mounting step surfaces; and the outer side surfaces of the support ring plates are arranged flush with the end faces of the cylinder body.

[0008] In this way, by arranging the mounting step surfaces on the two inner side walls of the outer end of the cooling water tank, the support ring plates can be more conveniently mounted and positioned.

[0009] As optimization, the through holes include four first through holes and two second through holes.

[0010] In this way, by arranging the four first through holes and the two second through holes, the design is more simple and reasonable. Further, the first through holes are arranged on one side of the support ring plate close to the cooling water inlet, and the second through holes are arranged on the side of the support ring plate away from the cooling water inlet; the first through holes and the second through holes are both in long strip hole structure design and are arranged in overall curved arc structure, and the length size of the first through holes is greater than the length size of the second through holes. This arrangement is more reasonable and is more conducive to the circulation of the cooling water.

[0011] As optimization, the cooling water inlet is in circular hole structure design; a flow splitting protrusion is arranged on the inner circumferential wall of the cooling water tank at a position opposite to the cooling water inlet, and the flow splitting protrusion is arranged along the axial direction of the piston cavity.

[0012] In this way, by designing the flow splitting protrusion, the cooling water entering from the cooling water inlet is split by the flow splitting protrusion, so that the water inflow on both sides is more balanced, and the cooling effect is better.

[0013] As optimization, the length size of the flow splitting protrusion is greater than the diameter size of the cooling water inlet; and the two ends of the flow splitting protrusion extend to the outside of the inner contour of the cooling water inlet.

[0014] In this way, the structure design of the flow splitting protrusion is more simple and reasonable, and the flow splitting effect is better.

[0015] As optimization, a rib is integrally formed on the inner circumferential wall of the cooling water tank, and the rib forms the flow splitting protrusion.

[0016] In this way, the structure design is more reasonable, and the flow splitting protrusion can be more conveniently formed.

[0017] As optimization, the cross section of the flow splitting protrusion is in isosceles triangle structure design.

[0018] In this way, the shape design of the flow splitting protrusion is more simple and reasonable.

[0019] As optimization, the butt cylinder is outwardly protruded and integrally formed on the outer circumferential surface of the cylinder body and corresponding to the outer end of the cooling water inlet; the connecting cylinder section is integrally formed on the end face of the connecting end of the cylinder body and corresponding to the piston cavity.

[0020] In this way, the structure design of the cylinder body is more reasonable.

[0021] As optimization, the reinforcing ribs are arranged on the outer circumferential surface of the cylinder body and spaced along the axial direction of the piston cavity; the four assembly connecting holes are arranged on the outer portion of the piston cavity of the matching end face of the cylinder body and axially through.

[0022] In this way, the strength of the whole structure can be improved by designing the reinforcing ribs; the installation can be more convenient by designing the assembly connecting holes.

[0023] In summary, the motorcycle cylinder body has the characteristics of simple and reasonable structure design, better reduction of vibration noise, more uniform water inlet and improved cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure schematic view of the motorcycle cylinder body in the embodiment of the utility model.

[0025] Figure 2 is Figure 1 a structure schematic view after rotating by one angle.

[0026] Figure 3 is Figure 1 a structure schematic view after rotating by another angle.

[0027] Figure 4 is Figure 1 a structure schematic view after omitting the support ring plate.

[0028] Figure 5 is Figure 1 a top view of the motorcycle cylinder body.

[0029] Figure 6 is Figure 5 an A-A sectional view of the motorcycle cylinder body.

[0030] Figure 7 is Figure 1 a bottom view of the motorcycle cylinder body.

[0031] Figure 8 is Figure 1 a front view of the motorcycle cylinder body.

[0032] Figure 9 is Figure 1 a rear view of the motorcycle cylinder body. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] like Figures 1 to 9 As shown, a motorcycle cylinder block includes a cylinder body 1; a piston chamber 2 axially connected to the end face of the cylinder body; a cooling water groove 3 with an annular structure is provided outside the outer contour of the piston chamber on the end face of the cylinder body; a cooling water inlet 4 is provided on one side surface of the cylinder body at a position corresponding to the inner end of the cooling water groove, and the cooling water inlet is connected to the inner end of the cooling water groove; a support ring plate 5 with an overall annular plate structure is installed between the two side walls of the outer end of the cooling water groove, and a through hole 6 is provided on the support ring plate through its thickness direction.

[0035] Thus, in the above-mentioned motorcycle cylinder block structure, by installing a support ring plate with an overall circular plate structure between the two outer walls of the cooling water tank, and then setting a through hole through its thickness direction on the support ring plate, it can form a support between the two outer walls of the cooling water tank without affecting the circulation and flow of the cooling water, thereby improving stability. When the piston rotates at high speed in the cylinder block, it reduces vibration noise and also improves the structural strength of the cylinder block, increasing its service life.

[0036] In this specific embodiment, an annular mounting step surface 7 is formed on each of the two inner sidewalls at the outer end of the cooling water tank, and the inner side surface of the support ring plate is respectively attached to the mounting step surface; and the outer side surface of the support ring plate is flush with the end face of the cylinder body.

[0037] In this way, by setting the installation step surface on the two inner side walls at the outer end of the cooling water tank, it is easier to install and position the support ring plate.

[0038] In this specific embodiment, the through hole includes four first through holes 8 and two second through holes 9.

[0039] In this way, four first through holes and two second through holes are arranged, and the design is more reasonable. Further, the first through hole is arranged on the support ring plate on the side close to the cooling water inlet; the second through hole is arranged on the support ring plate on the side away from the cooling water inlet; the first through hole and the second through hole are both designed as long strip hole structures and are arranged in an overall curved arc structure, and the length of the first through hole is greater than the length of the second through hole. In this way, the arrangement is more reasonable, and is more conducive to the circulation of the cooling water.

[0040] In the embodiment, the cooling water inlet is designed as a circular hole structure; a flow splitting protrusion 10 is arranged on the inner wall of the cooling water tank and opposite the cooling water inlet, and the flow splitting protrusion is arranged in the axial direction of the piston cavity.

[0041] In this way, by designing the flow splitting protrusion, the cooling water entering from the cooling water inlet is split by the flow splitting protrusion, so that the water inflow on both sides is more balanced, and the cooling effect is better.

[0042] In the embodiment, the length of the flow splitting protrusion is greater than the diameter of the cooling water inlet; and the two ends of the flow splitting protrusion extend to the outside of the cooling water inlet.

[0043] In this way, the structure of the flow splitting protrusion is more reasonable and can better split the flow.

[0044] In the embodiment, a rib is integrally formed on the inner wall of the cooling water tank, and the rib forms the flow splitting protrusion.

[0045] In this way, the structure is more reasonable and the flow splitting protrusion can be formed more conveniently.

[0046] In the embodiment, the cross section of the flow splitting protrusion is designed as an isosceles triangle.

[0047] In this way, the shape of the flow splitting protrusion is more reasonable.

[0048] In the embodiment, an outwardly protruding butt cylinder 11 is integrally formed on the outer circumferential surface of the cylinder body and corresponds to the outer end of the cooling water inlet; and a connecting cylinder segment 12 is integrally formed on the connecting end face of the cylinder body and corresponds to the piston cavity.

[0049] In this way, the structure of the cylinder body is more reasonable.

[0050] In the embodiment, a plurality of reinforcing ribs 13 are arranged on the outer circumferential surface of the cylinder body and are spaced apart in the axial direction of the piston cavity; and four assembly connection holes 14 are arranged on the outer part of the piston cavity on the mating end face of the cylinder body and are arranged in the axial direction.

[0051] Thus, the strength of the whole structure can be improved by designing the reinforcing ribs, and the installation can be more convenient by designing the assembly connecting holes.

[0052] In conclusion, the motorcycle cylinder body has the characteristics of simpler and more reasonable structure design, better reduction of vibration noise, more uniform water inlet and improved cooling effect.

[0053] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the existing technology according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A motorcycle cylinder body, comprising a cylinder body; an axially through arranged piston cavity is arranged on the fitting end face of the cylinder body; and an annular structure designed cooling water groove is arranged outside the outer contour of the piston cavity on the fitting end face of the cylinder body, a cooling water inlet is arranged on the side surface of the cylinder body and corresponds to the inner end of the cooling water groove, and the cooling water inlet is arranged in communication with the inner end of the cooling water groove; characterized in that; The support ring plate with a whole circular ring plate structure is arranged between the two side walls of the outer end of the cooling water tank.

2. A motorcycle cylinder as claimed in claim 1, characterised in that: The inner side surfaces of the support ring plate are respectively arranged on the mounting steps with a ring structure on the two inner side walls of the outer end of the cooling water tank.

3. A motorcycle cylinder as claimed in claim 1, characterised in that: The through holes include four first through holes and two second through holes.

4. A motorcycle cylinder as claimed in claim 1 wherein: The cooling water inlet is designed as a circular hole structure.

5. A motorcycle cylinder as claimed in claim 4 wherein: A shunt protrusion is arranged on the inner circumferential wall of the cooling water tank and opposite to the cooling water inlet.

6. A motorcycle cylinder as claimed in claim 4 wherein: The length of the shunt protrusion is greater than the diameter of the cooling water inlet.

7. A motorcycle cylinder as claimed in claim 4 wherein: The shunt protrusion is integrally formed on the inner circumferential wall of the cooling water tank.

8. A motorcycle cylinder as claimed in claim 1 wherein: The cross section of the shunt protrusion is designed as an isosceles triangle structure.

9. A motorcycle cylinder as claimed in claim 1 wherein: An outward protruding butt joint cylinder is integrally formed on the outer circumferential surface of the cylinder body and corresponds to the outer end of the cooling water inlet. A connecting cylinder section is integrally formed on the connecting end surface of the cylinder body and corresponds to the piston cavity. A plurality of reinforcing ribs are arranged on the outer circumferential surface of the cylinder body and spaced along the axial direction of the piston cavity. Four assembly connection holes are arranged on the outer part of the piston cavity of the connecting end surface of the cylinder body.

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