Engine transmission component integrating timing, balance weight and cooling functions, engine and motorcycle

Abstract

The utility model belongs to the technical field of engines, and particularly discloses an engine transmission component integrating timing, balance weight and cooling functions, an engine and a motorcycle, the engine transmission component integrating timing, balance weight and cooling functions comprises a balance shaft, a first gear and a second gear are arranged on the balance shaft, and the first gear and the second gear are arranged on the balance shaft. The first gear is externally connected with rotating power, and the second gear is connected with a cam shaft of an engine; the balancing weight is arranged on the first gear; the cooling structure is arranged on the balance shaft and located on the side, away from the second gear, of the first gear. After the first gear is connected with rotating power, the balance shaft is driven to rotate, the balance shaft synchronously drives the water pump impeller and the second gear to rotate, the functions of weight balancing, timing and cooling are integrated, and compared with the prior art, the space is smaller, the cost is lower, the assembly efficiency is higher, the weight is reduced, light weight is achieved, and consistency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine transmission component, an engine and a motorcycle with integrated timing, balancing weight and cooling functions. Background Art

[0002] The engine is a vital component of a motorcycle. Its primary function is to convert the chemical energy of fuel into mechanical energy to propel the motorcycle forward. The engine burns fuel, such as gasoline or diesel, generating heat that is converted into mechanical energy to drive the motorcycle's rear wheel, enabling it to move forward.

[0003] Among them, the engine has several important components, namely the cooling water pump for cooling the engine, the timing sprocket connected to the crankshaft, and the counterweight. In the existing technology, the cooling water pump, the counterweight and the timing sprocket are generally set separately, and the transmission between them is achieved through gears, which makes the internal structure of the engine too bloated, the cost higher, and the assembly too troublesome. At the same time, the volume of the engine needs to be made larger accordingly, which cannot meet the growing demand for lightweight motorcycles. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an engine transmission component, an engine and a motorcycle that integrate timing, balancing weight and cooling functions, so as to solve the problem in the prior art that the cooling water pump, counterweight and timing sprocket and other structures inside the engine are arranged separately, resulting in a larger engine size.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides an engine transmission component with integrated timing, balancing weight, and cooling functions, which is disposed in an engine. The engine transmission component with integrated timing, balancing weight, and cooling functions includes:

[0006] A balance shaft, wherein the balance shaft is provided with a first gear and a second gear, the first gear is used for connecting to an external rotational power, and the second gear is used for connecting to the camshaft of the engine;

[0007] a counterweight block, the counterweight block being integrally provided on the first gear;

[0008] A cooling structure is provided on the balancing shaft and is located on a side of the first gear away from the second gear.

[0009] Optionally, a shaft sleeve is provided on the first gear, the first gear is detachably connected to the balance shaft via the shaft sleeve, and the counterweight is arranged between the first gear and the cooling structure.

[0010] Optionally, the counterweight block includes a first boss and a second boss, the first boss is arranged on the first gear, the first boss extends circumferentially on the first gear with the axis of the first gear as the center, the second boss extends vertically on the first boss along the direction of the first gear toward the cooling structure, and the width of the second boss is smaller than the width of the first boss.

[0011] Optionally, the second gear is arranged on a side of the first gear away from the counterweight, and the second gear is arranged on the shaft sleeve.

[0012] Optionally, the cooling structure includes a fixing component and a water pump impeller, the water pump impeller is arranged at an end of the balance shaft away from the second gear, the water pump impeller can be used to rotate with the balance shaft, and the fixing component is arranged on a side of the water pump impeller close to the first gear, for connecting the water pump impeller and the balance shaft.

[0013] Optionally, the fixing assembly includes a connecting head, a fixing sleeve and a retaining ring, the connecting head is sleeved on the balancing shaft, the connecting head is clamped with the water pump impeller, the fixing sleeve is sleeved on the connecting head, and the retaining ring is arranged on the side of the connecting head away from the water pump impeller.

[0014] Optionally, one end of the balancing shaft away from the second gear passes through the water pump impeller and is detachably connected to a fastener, and the fastener can be used to allow the water pump impeller to rest against the connecting head.

[0015] Optionally, a first bearing and a second bearing are provided on the balancing shaft, the first bearing is arranged at an end of the balancing shaft away from the water pump impeller, and the second bearing is arranged between the retaining ring and the sleeve.

[0016] The utility model also provides an engine, comprising the engine transmission component with integrated timing, balancing weight and cooling functions.

[0017] The utility model also provides a motorcycle, comprising the engine transmission component with integrated timing, balancing weight and cooling functions.

[0018] As described above, the engine transmission component, engine, and motorcycle proposed by the present invention, which integrate timing, balancing weight, and cooling functions, have the following beneficial effects:

[0019] (1) Compared with the prior art, the present invention integrates the counterweight, timing sprocket and cooling water pump inside the engine into one, eliminating the need for excessive gear transmission, thereby greatly reducing the space required for the three functional parts. Accordingly, the overall size of the engine can be reduced, and the overall weight of the engine will be reduced accordingly, thereby meeting the demand for lightweight motorcycle engines and improving the performance of racing motorcycles.

[0020] (2) Compared with the prior art, the present invention integrates three functional components into one body, which can be installed as a whole inside the engine after assembly is completed, thereby making the assembly of the engine more convenient and making it easier to disassemble when maintaining and repairing the engine.

[0021] (3) Compared with the prior art, the present invention reduces the use of parts and components by integrating three functional components into one, reduces the cost of the engine, and improves the efficiency of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic structural diagram of an embodiment of the present utility model;

[0023] Figure 2 Shown is a first exploded view of an embodiment of the present invention;

[0024] Figure 3 Shown is a second exploded view of an embodiment of the present invention;

[0025] Figure 4 It shows an enlarged view of point A in one embodiment of the present invention.

[0026] Description of reference numerals:

[0027] First gear 1, counterweight 2, first boss 201, second boss 202, balance shaft 3, second gear 4, sleeve 5, first bearing 6, second bearing 7, snap ring 8, fixing sleeve 9, connector 10, water pump impeller 11, connecting groove 1101, fastener 12. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0029] It should be noted that the diagrams provided in this embodiment are only used to illustrate the basic concept of the present invention. Therefore, the diagrams only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complex. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the conditions for the implementation of the present invention, so they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0030] like Figure 1-Figure 4 As shown, the present invention proposes an engine transmission component with integrated timing, balancing weight and cooling functions, which is arranged in the engine. The engine transmission component with integrated timing, balancing weight and cooling functions includes:

[0031] A balance shaft 3 is provided with a first gear 1 and a second gear 4. The first gear 1 is used for connecting to an external rotational power, and the second gear 4 is used for connecting to a camshaft of an engine.

[0032] The counterweight 2 is integrally provided on the first gear 1;

[0033] The cooling structure is provided on the balancing shaft 3 and is located on a side of the first gear 1 away from the second gear 4 .

[0034] In this embodiment, by integrating the counterweight 2, timing sprocket and cooling water pump inside the engine into one, there is no need to use too many gears for transmission, which greatly reduces the space required for the three functional parts. The overall size of the engine can be reduced accordingly, and the overall weight of the engine will be reduced accordingly, which increases the demand for lightweight motorcycle engines and improves the performance of racing motorcycles.

[0035] In this embodiment, by integrating the three functional components into one, the entire component can be installed inside the engine after assembly is completed, making the assembly of the engine more convenient and disassembly more convenient when maintaining and repairing the engine; at the same time, the use of parts is reduced, the cost of the engine is reduced, and the efficiency of the enterprise is improved.

[0036] In an exemplary embodiment, a shaft sleeve 5 is provided on the first gear 1 , and the first gear 1 is detachably connected to the balancing shaft 3 via the shaft sleeve 5 . The counterweight 2 is disposed between the first gear 1 and the cooling structure.

[0037] Exemplarily, the second gear 4 is arranged on the side of the first gear 1 away from the counterweight 2, and the second gear 4 is arranged on the shaft sleeve 5. In this embodiment, the second gear 4 is arranged on the left side of the first gear 1, and the counterweight is arranged on the right side of the first gear.

[0038] In this embodiment, by integrating the first gear 1 and the second gear 4 onto the bushing 5 , when connecting, it is only necessary to install the bushing 5 onto the balancing shaft 3 to achieve the connection between the first gear 1 , the second gear 4 and the balancing shaft 3 .

[0039] It is worth noting that in this embodiment, the first gear 1 is mainly used to access rotational power, and it is mainly used to engage with the output gear of the crankshaft. When the crankshaft rotates, it will drive the first gear 1 to rotate, and the first gear 1 can drive the entire engine transmission component with integrated timing, balancing weight and cooling functions to rotate. The second gear 4 is a timing sprocket, which is mainly used to transmit rotational power to the camshaft through transmission parts such as chains to open or close the valve.

[0040] It should also be noted that in this embodiment, the first gear 1 and the second gear 4 can be either integral or split. If they are integral, the bushing 5 can be directly connected to the balance shaft 3. If they are split, the first gear 1 or the second gear 4 needs to be assembled with the bushing 5 first and then connected to the balance shaft 3.

[0041] It should also be noted that in this embodiment, the sleeve 5 and the balance shaft 3 can be connected in a split manner, such as a threaded connection, or can be integrally formed. The integral forming method has better consistency and is more convenient to assemble.

[0042] In an exemplary embodiment, the counterweight 2 includes a first boss 201 and a second boss 202. The first boss 201 is arranged on the first gear 1. The first boss 201 extends circumferentially on the first gear 1 with the axis of the first gear 1 as the center. The second boss 202 extends vertically on the first boss 201 along the direction of the first gear 1 toward the cooling structure. The width of the second boss 202 is smaller than the width of the first boss 201.

[0043] In this embodiment, the counterweight 2 is mainly used to ensure the smooth operation of the engine. Specifically, in this embodiment, the counterweight 2 is integrated into the right side wall of the first gear 1 so that the counterweight 2 can be installed synchronously when the first gear 1 is installed.

[0044] For example, Figure 4As shown, in this embodiment, the counterweight 2 comprises two parts. The first part extends circumferentially on the first gear 1 and has an overall annular shape. The second boss 202 is formed by extending the outer edge of the first boss 201 toward the axial direction of the first gear 1, along the cooling structure. The width of the second boss 202 is smaller than that of the first boss 201, allowing it to be positioned away from the shaft sleeve 5 to facilitate installation of the cooling structure. If the width of the first boss 201 is insufficient, a portion of the second boss 202 can extend onto the surface of the first gear 1. However, this should not affect the mating relationship between the meshing power gear and the first boss 201.

[0045] It is worth noting that the size of the annular counterweight 2 is adaptively set according to the specific model of the engine, and the size of the counterweight 2 (ie the angle of circumferential extension) can be adjusted according to the size and performance requirements of the engine.

[0046] It should also be noted that in this embodiment, the inner edge of the first boss 201 can also be integrally provided on the shaft sleeve 5, which can improve the overall performance of the connecting piece.

[0047] It should also be noted that in the portion of the first gear 1 not covered by the counterweight 2, a plurality of weight-reducing holes are opened on the first gear 1 to reduce the overall weight of the first gear 1, thereby reducing the overall weight of the engine and improving the lightweight performance. The weight-reducing holes are also evenly distributed along the circumference of the first gear 1.

[0048] In an exemplary embodiment, the cooling structure includes a fixing component and a water pump impeller 11. The water pump impeller 11 is arranged at an end of the balancing shaft 3 away from the second gear 4. The water pump impeller 11 can be used to rotate with the balancing shaft 3. The fixing component is arranged on a side of the water pump impeller 11 close to the first gear 1, and is used to connect the water pump impeller 11 and the balancing shaft 3.

[0049] In this embodiment, the water pump impeller 11 is used to rotate synchronously with the balance shaft 3 to dissipate heat from the engine. The water pump impeller 11 is arranged at the rightmost end of the balance shaft 3 and is fixed to the balance shaft 3 through a fixing component.

[0050] Exemplarily, the fixing assembly includes a connector 10, a fixing sleeve 9, and a snap ring 8. The connector 10 is sleeved on the balancing shaft 3, the connector 10 is snap-engaged with the water pump impeller 11, the fixing sleeve 9 is sleeved on the connector, and the snap ring 8 is arranged on the side of the connector away from the water pump impeller 11. In this embodiment, the connector 10 is mainly used to fix the water pump impeller 11. The fixing sleeve 9 and the snap ring 8 can firmly fix the connector 10 on the balancing shaft 3 and can prevent relative rotation between the connector 10 and the balancing shaft 3. Specifically: a connecting groove 1101 is opened on the end surface of the water pump impeller 11 close to the balancing shaft 3. After the end of the connector 10 enters the connecting groove 1101, the water pump impeller 11 can be pressed against the connector 10.

[0051] For example, the end of the balance shaft 3, distal from the second gear 4, passes through the water pump impeller 11 and is detachably connected to a fastener 12. Fastener 12 is used to secure the water pump impeller 11 against the connector 10. In this embodiment, the balance shaft 3 passes through the water pump impeller 11 and is then connected to fastener 12, ensuring a stable installation of the water pump impeller 11 on the balance shaft 3 while preventing it from rotating. In this embodiment, fastener 12 can be a connector with both connecting and retracting functions, such as a nut.

[0052] In an exemplary embodiment, a first bearing 6 and a second bearing 7 are provided on the balancing shaft 3 . The first bearing 6 is disposed at an end of the balancing shaft 3 away from the water pump impeller 11 , and the second bearing 7 is disposed between the retaining ring 8 and the sleeve 5 .

[0053] In this embodiment, the first bearing 6 and the second bearing 7 are provided to ensure stable rotation of the balancing shaft 3 and improve the stability of the entire connecting member during rotation.

[0054] The utility model also provides an engine, which includes the engine transmission component with integrated timing, balancing weight and cooling functions.

[0055] The utility model also provides a motorcycle, which comprises the engine transmission component with integrated timing, balancing weight and cooling functions.

[0056] To sum up, after the first gear 1 is connected to the rotational power, the utility model will drive the balance shaft 3 to rotate, and the balance shaft 3 will synchronously drive the water pump impeller 11 and the second gear 4 to rotate, and the second gear 4 plays the role of the timing sprocket, which can drive the camshaft inside the engine to rotate. Therefore, the utility model integrates the functions of counterweight, timing and cooling. Compared with the split setting in the prior art, it occupies less space, has lower manufacturing costs, and is more efficient in assembly. At the same time, the overall weight of the engine is reduced, the overall lightweight of the motorcycle is achieved, and the consistency of the motorcycle engine is improved.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. An engine transmission component integrating timing, balancing weight and cooling functions, arranged in an engine, characterized in that: The engine transmission components with integrated timing, balancing weight and cooling functions include: A balance shaft, wherein the balance shaft is provided with a first gear and a second gear, the first gear is used for connecting to an external rotational power, and the second gear is used for connecting to the camshaft of the engine; a counterweight block, the counterweight block being integrally provided on the first gear; A cooling structure is provided on the balancing shaft and is located on a side of the first gear away from the second gear.

2. The engine transmission component with integrated timing, balancing weight and cooling functions according to claim 1, characterized in that: A shaft sleeve is provided on the first gear, and the first gear is detachably connected to the balance shaft via the shaft sleeve. The counterweight is arranged between the first gear and the cooling structure.

3. The engine transmission component with integrated timing, balancing weight and cooling functions according to claim 2, characterized in that: The counterweight block includes a first boss and a second boss. The first boss is arranged on the first gear. The first boss extends circumferentially on the first gear with the axis of the first gear as the center. The second boss extends vertically on the first boss along the direction of the first gear toward the cooling structure. The width of the second boss is smaller than the width of the first boss.

4. The engine transmission component with integrated timing, balancing weight and cooling functions according to claim 2, characterized in that: The second gear is arranged on a side of the first gear away from the counterweight, and the second gear is arranged on the shaft sleeve.

5. The engine transmission component integrating timing, balancing weight and cooling functions according to claim 2, characterized in that: The cooling structure includes a fixing component and a water pump impeller. The water pump impeller is arranged at an end of the balancing shaft away from the second gear. The water pump impeller can be used to rotate with the balancing shaft. The fixing component is arranged on a side of the water pump impeller close to the first gear, and is used to connect the water pump impeller and the balancing shaft.

6. The engine transmission component integrating timing, balancing weight and cooling functions according to claim 5, characterized in that: The fixing assembly includes a connecting head, a fixing sleeve and a snap ring. The connecting head is sleeved on the balancing shaft and is snap-connected to the water pump impeller. The fixing sleeve is sleeved on the connecting head, and the snap ring is arranged on a side of the connecting head away from the water pump impeller.

7. The engine transmission component integrating timing, balancing weight and cooling functions according to claim 6, characterized in that: One end of the balancing shaft away from the second gear passes through the water pump impeller and is detachably connected to a fastener, and the fastener can be used to allow the water pump impeller to rest against the connecting head.

8. The engine transmission component with integrated timing, balancing weight and cooling functions according to claim 6, characterized in that: The balancing shaft is provided with a first bearing and a second bearing. The first bearing is arranged at an end of the balancing shaft away from the water pump impeller, and the second bearing is arranged between the retaining ring and the shaft sleeve.

9. An engine, characterized in that: An engine transmission component comprising the integrated timing, balancing weight and cooling functions as described in any one of claims 1 to 8.

10. A motorcycle, characterized in that: An engine transmission component comprising the integrated timing, balancing weight and cooling functions as described in any one of claims 1 to 8.

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