Locking type engine

Abstract

The utility model relates to a locking type engine, which is fixedly locked on a frame of a motorcycle and comprises a crankcase, a crankshaft, a first transmission shaft, an output shaft, a clutch and an oil discharge outlet. An oil pan is arranged at the bottom of the crankcase, and a clutch chamber is separated from the crankcase through an outer wall of the clutch chamber. The crankshaft is arranged in the crankcase in a penetrating mode and driven by a power source of the locking type engine to pivot. The first transmission shaft penetrates through the crankcase and is driven by the crankshaft to pivot. The output shaft penetrates through the crankcase, is driven by the first transmission shaft to pivot, and finally drives a rear wheel to rotate through a chain or a belt. The clutch is arranged on the first transmission shaft and contained in the clutch chamber. The oil discharge outlet is formed in the clutch chamber and used for guiding lubricating oil splashed by rotation of the clutch to the outside of the clutch chamber and finally flowing back to an oil pan. Therefore, the engine configuration is used for finely entering a lubricating system of the engine and maintaining the lubricating performance of the oil pump, and meanwhile, the clutch chamber for containing the clutch is additionally arranged, so that the problem that a large amount of lubricating oil of the oil pan is rotated and stirred by the clutch to affect kinetic energy loss is solved.

Description

Technical Field

[0001] The utility model relates to a fixed-lock type engine, in particular to a fixed-lock type engine suitable for a scooter. Background Art

[0002] See also Figure 1 and Figure 2 , which are respectively a side view of an existing fixed-lock engine installed on a scooter and a schematic diagram of the existing fixed-lock engine on the outside of the crankcase and observed from the axial direction. As shown in the figure, the existing fixed-lock engine 9 is fixed to a frame 901 of a motorcycle 90, and has no relative motion relationship with the frame 901. The fixed-lock engine 9 is connected to the rear wheel 98 by a rear swing arm 97, and drives the rear wheel 98 to rotate through a chain 99, so as to reduce the unsprung mass of the shock absorber. In the prior art, the fixed-lock engine 9 includes a crankcase 92, a crankshaft 93, a transmission shaft 94 with a clutch 91, an output shaft 95 and an oil pump 96 for pumping lubricating oil. Among them, the fixed-lock engine 9 is observed from the axial direction: the axis C2 of the transmission shaft 94 is located below the axis C1 of the crankshaft 93, and the axis C3 of the output shaft 95 is located above the axis C1 of the crankshaft 93. Taking into account the structural configuration of the fixed-lock engine 9 of the above motorcycle 90, it has the disadvantages of a high output shaft 95 that is difficult to lubricate and a wide and flat oil pan, and the clutch 91 is at a relatively low position, and the lubricating oil in the oil pan is stirred by the clutch 91 to generate kinetic energy loss or generate bubbles, resulting in insufficient oil pressure.

[0003] The inventor, motivated by this and based on a spirit of active invention, has been eager to devise a solid-lock engine that can solve the above-mentioned problems. After several studies and experiments, the present utility model has been finally completed. Summary of the invention

[0004] The main purpose of the utility model is to provide a solid-lock engine. Through the engine configuration of the utility model, the lubrication of the transmission system is improved, the lubrication performance of the oil pump is maintained, and a clutch chamber for accommodating the clutch is added at the same time to reduce the problem of a large amount of lubricating oil in the oil pan being stirred by the rotation of the clutch and affecting the kinetic energy loss.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a fixed-lock engine, which is fixed on a frame of a motorcycle, and includes a crankcase, a crankshaft, a first transmission shaft, an output shaft, a stepless speed change system, a clutch and an oil drain outlet. The bottom of the crankcase is an oil pan, which can be used to contain lubricating oil liquid. The crankcase is separated into a clutch chamber by the outer wall of a clutch chamber. The crankshaft is arranged in the crankcase and is driven to pivot by the power source of the fixed-lock engine. The first transmission shaft is arranged in the crankcase and is driven to pivot by the crankshaft. The output shaft is arranged in the crankcase and is driven to pivot by the first transmission shaft, and finally drives a rear wheel to rotate through a chain or a belt. The stepless speed change system includes a first transmission element, a second transmission element and a transmission connecting member, the first transmission element is arranged at one end of the crankshaft, the second transmission element is arranged at one end of the first transmission shaft and corresponds to the first transmission element, and the first transmission element drives the second transmission element with the transmission connecting member. The clutch is arranged on the first transmission shaft and accommodated in the clutch chamber. An oil discharge outlet is provided in the clutch chamber to guide the lubricating oil splashed by the clutch rotation to the outside of the clutch chamber and finally flow back to the oil pan.

[0006] The first transmission shaft may be provided with a transmission gear housing, the clutch drives the transmission gear housing to rotate, the output shaft is provided with an output shaft gear, and the transmission gear housing meshes with the output shaft gear.

[0007] The utility model provides another type of fixed-lock engine, which is fixed on a frame of a motorcycle, and includes a crankcase, a crankshaft, a first transmission shaft, a second transmission shaft, an output shaft, a stepless speed change system, a clutch and an oil discharge outlet. The bottom of the crankcase is an oil pan, which can be used to contain lubricating oil liquid. The crankcase is separated into a clutch chamber by an outer wall of a clutch chamber. The crankshaft is arranged in the crankcase and is driven to pivot by the power source of the fixed-lock engine. The first transmission shaft is arranged in the crankcase and is driven to pivot by the crankshaft. The second transmission shaft is arranged in the crankcase and is driven to pivot by the first transmission shaft. The output shaft is arranged in the crankcase and is driven to pivot by the second transmission shaft, and finally drives a rear wheel to rotate through a chain or a belt. The stepless speed change system includes a first transmission element, a second transmission element and a transmission connecting member, the first transmission element is arranged at one end of the crankshaft, the second transmission element is arranged at one end of the first transmission shaft and corresponds to the first transmission element, and the first transmission element drives the second transmission element with the transmission connecting member. The clutch is arranged on the first transmission shaft and is accommodated in the clutch chamber. The oil discharge outlet is arranged in the clutch chamber to guide the lubricating oil splashed by the clutch rotation to the outside of the clutch chamber and finally flows back to the oil pan.

[0008] The above-mentioned first transmission shaft can be provided with a transmission gear housing, and the clutch drives the transmission gear housing to rotate. The second transmission shaft can be provided with a second transmission gear, which includes a first tooth portion and a second tooth portion. The output shaft is provided with an output shaft gear, and the transmission gear housing meshes with the first tooth portion, and the second tooth portion meshes with the output shaft gear.

[0009] The clutch chamber may be provided with an oil guide outlet, and a guide portion extends from the outer wall of the clutch chamber toward the clutch rotation tangent direction to form an oil guide channel, and the oil guide outlet is connected to the oil guide channel. Thus, by providing the oil guide outlet and the oil guide channel, in addition to increasing the clutch splash oil discharge path, the oil guide channel can also be used to provide lubrication for other parts of the clutch in the direction of the crankshaft.

[0010] An oil scraper may be provided between the outer wall of the clutch chamber and the clutch, the oil scraper being connected to the crankcase and roughly enveloping the clutch, so that the oil scraper can more surely scrape off the lubricating oil stuck on the periphery of the clutch and guide it to the oil discharge outlet.

[0011] The bottom side of the clutch chamber may be provided with a collecting portion for collecting lubricating oil splashed by the clutch rotation.

[0012] The collecting portion may include a stop wall and a collecting groove, wherein the collecting groove is connected to a clutch chamber bottom wall of the clutch chamber and the collecting groove protrudes from the clutch chamber bottom wall, so that the lubricating oil is collected by the collecting groove, flows through the clutch chamber bottom wall and is guided back to the oil pan.

[0013] The collecting portion and the bottom wall of the clutch chamber may substantially surround the first transmission shaft.

[0014] The bottom wall of the clutch chamber may be provided with an oil passage outlet to guide the lubricating oil to a second transmission shaft oil passage of the second transmission shaft, and then splashed out by the rotation of the second transmission shaft to lubricate the transmission elements around the second transmission shaft.

[0015] The above summary and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the patent application of the present utility model. Other purposes and advantages of the present utility model will be described in the subsequent specific implementation methods and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a side view of a conventional fixed-lock engine installed on a scooter.

[0017] Figure 2 The diagram is a schematic diagram of a conventional solid-lock engine viewed from the outside of a crankcase and from the axial direction.

[0018] Figure 3 It is a schematic diagram of the first embodiment of the utility model, wherein the locking engine is located outside the crankcase and viewed from the axial direction.

[0019] Figure 4 It is a schematic diagram of the oil circuit of the solid-lock engine of the first embodiment of the utility model, viewed from the axial direction inside the crankcase.

[0020] Figure 5 for Figure 4 AA section view.

[0021] Figure 6 It is a three-dimensional view of the collecting part and the bottom wall of the clutch chamber of the first embodiment of the solid-lock engine of the utility model.

[0022] Figure 7 It is a schematic diagram of a second embodiment of the utility model, wherein the locking engine is located outside the crankcase and viewed from the axial direction.

[0023] Description of main component symbols:

[0024] 1, 1' solid lock engine

[0025] 2 Crankcase

[0026] 2a Left crankcase

[0027] 2b Right crankcase

[0028] 20 Oil pan

[0029] 21, 21' Clutch chamber outer wall

[0030] 21a Guide

[0031] 21b Oil scraper

[0032] 22 Clutch chamber bottom wall

[0033] 23 Clutch chamber top wall

[0034] 231 Protrusion

[0035] 3 Crankshaft

[0036] 41 First transmission shaft

[0037] 411 Transmission gear housing

[0038] 42 Second transmission shaft

[0039] 421 Second transmission gear

[0040] 4211 First tooth

[0041] 4212 Second tooth

[0042] 5 Output shaft

[0043] 51 Output shaft gear

[0044] 6 Clutch

[0045] 7 Collection Department

[0046] 71 Stop wall

[0047] 72 Collection Tanks

[0048] 81 Continuously variable transmission system

[0049] 811 First transmission element

[0050] 812 Second transmission element

[0051] 813 Transmission connector

[0052] 9 Locking engine

[0053] 90 Motorcycle

[0054] 901 Frame

[0055] 91 Clutch

[0056] 92 Crankcase

[0057] 93 Crankshaft

[0058] 94 Drive shaft

[0059] 95 Output shaft

[0060] 96 Oil Pump

[0061] 97 Swingarm

[0062] 98 rear wheel

[0063] 99 Chain

[0064] b Support

[0065] C1, C2, C3 Axis

[0066] H Second transmission shaft oil passage

[0067] P Oil Pump

[0068] T Clutch chamber

[0069] Te Oil drain outlet

[0070] To oil channel outlet

[0071] Tp oil guide channel

[0072] Ts oil outlet DETAILED DESCRIPTION

[0073] See also Figures 3 to 5, which are respectively a schematic diagram of the first embodiment of the utility model of the solid-lock type engine viewed from the outside of the crankcase and from the axial direction, a schematic diagram of the oil circuit viewed from the inside of the crankcase and from the axial direction, and Figure 4 The figure shows a fixed engine 1, which is fixed to a frame of a motorcycle, and includes a crankcase 2, a crankshaft 3, a first transmission shaft 41, a second transmission shaft 42, an output shaft 5, a clutch 6, a stepless transmission system 81 and an oil outlet Te.

[0074] In the present embodiment, the crankcase 2 is composed of a left crankcase 2a and a right crankcase 2b. The bottom of the crankcase 2 is an oil pan 20, which can be used to accommodate the lubricating oil liquid that flows back here. The crankshaft 3 is arranged in the crankcase 2 and is driven to pivot by the power source of the fixed-lock engine 1. The first transmission shaft 41 is arranged in the crankcase 2 and is driven to pivot by the crankshaft 3. It transmits the power of the crankshaft 3 to the first transmission shaft 41 through the stepless transmission system 81. The stepless transmission system 81 includes a first transmission element 811, a second transmission element 812 and a transmission connection 813. The first transmission element 811 is arranged at one end of the crankshaft 3, and the second transmission element 812 is arranged at one end of the first transmission shaft 41 and corresponds to the first transmission element 811. The first transmission element 811 drives the second transmission element 812 with the transmission connection 813. In the present embodiment, the transmission connection 813 can be a belt.

[0075] In addition, the second transmission shaft 42 is provided in the crankcase 2 and is driven to pivot by the first transmission shaft 41. The output shaft 5 is provided in the crankcase 2 and is driven to pivot by the second transmission shaft 42, and finally drives a rear wheel to rotate through a chain or a belt. Among them, the first transmission shaft 41 is provided with a transmission gear housing 411 and a clutch 6 that drives the transmission gear housing 411 to rotate, the second transmission shaft 42 is provided with a second transmission gear 421, which includes a first tooth portion 4211 and a second tooth portion 4212, and the output shaft 5 is provided with an output shaft gear 51, the transmission gear housing 411 meshes with the first tooth portion 4211, and the second tooth portion 4212 meshes with the output shaft gear 51, so as to transmit the power of the first transmission shaft 41 to the output shaft 5 through the transmission gear housing 411, the second transmission gear 421 and the output shaft gear 51, and finally drives the rear wheel to rotate through a chain or a belt. The oil pump P is accommodated in the crankcase 2 to pump lubricating oil. Among them, when observed from the axial direction of the crankshaft 3 , the axis of the first transmission shaft 41 is located below the axis of the crankshaft 3 and the axis of the output shaft 5 , and the axis of the output shaft 5 is higher than the axis of the crankshaft 3 and the axis of the first transmission shaft 41 .

[0076] The clutch 6 is disposed on the first transmission shaft 41 and is accommodated in a clutch chamber T. The clutch chamber T roughly envelops the clutch 6, and the clutch chamber T is separated by a clutch chamber outer wall 21 between the clutch 6 and the crankshaft 3 to separate the lubricating oil in the clutch chamber T from the lubricating oil outside the clutch chamber T, so that the lubricating oil outside the clutch chamber T will not be directly stirred by the clutch 6. In this embodiment, the clutch chamber T is provided with an oil discharge outlet Te to guide the lubricating oil splashed by the clutch 6 to the outside of the clutch chamber T and finally return to the oil pan 20, which lengthens the return path and can also increase the defoaming time of the lubricating oil generated by the clutch 6 after the rotation and stirring when returning. In addition, an oil scraper 21b is provided between the clutch chamber outer wall 21 and the clutch 6. The oil scraper 21b is connected to the crankcase 2 and roughly envelops the clutch 6, and can more reliably scrape off the lubricating oil stuck on the periphery of the clutch 6 and guide it to the oil discharge outlet Te.

[0077] Furthermore, if Figure 5 and Figure 6 As shown, a collecting portion 7 is provided at the bottom side of the clutch chamber T to collect the lubricating oil splashed by the clutch 6 during rotation. The collecting portion 7 includes a stop wall 71 and a collecting groove 72. The collecting groove 72 is connected to a clutch chamber bottom wall 22 of the clutch chamber T, and the collecting groove 72 protrudes from the clutch chamber bottom wall 22, so that the lubricating oil is collected by the collecting groove 72, flows through the clutch chamber bottom wall 22 under the influence of gravity, and is guided back to the oil pan 20. The collecting portion 7 and the clutch chamber bottom wall 22 are generally around the first transmission shaft 41, and are used to collect the lubricating oil splashed and falling in the clutch chamber T and flowing down the wall, and can maximize the collection area through the rotation center of the first transmission shaft 41, and finally flow back to the oil pan 20. In addition, the clutch chamber bottom wall 22 of the present embodiment is provided with an oil passage outlet To, which is connected to a second transmission shaft oil passage H provided on the second transmission shaft 42, so as to guide the lubricating oil from the clutch chamber T through the oil passage outlet To to the second transmission shaft oil passage H, and then splashed out by the rotation of the second transmission shaft 42, and lubricating the transmission elements around the second transmission shaft 42 (such as the second transmission gear 421 and the supporting part b). On the other hand, a clutch chamber top wall 23 of the clutch chamber T of the present embodiment is provided with a protrusion 231, and the arrangement of the protrusion 231 can make the clutch chamber T compact in the axial direction and reduce the volume of the bottom of the clutch chamber T.

[0078] See also Figure 7, is a schematic diagram of the second embodiment of the solid-locked engine of the utility model, which is outside the crankcase and observed from the axial direction. The figure shows another solid-locked engine 1', whose basic structure is the same as that of the first embodiment, except that: the clutch chamber T of this embodiment is also provided with an oil guide outlet Ts, and the outer wall 21' of the clutch chamber extends a guide portion 21a in the direction of the clutch 6 rotation tangent to form an oil guide channel Tp, and the oil guide outlet Ts is connected to the oil guide channel Tp. Therefore, the oil guide outlet Ts and the oil guide channel Tp of this embodiment can not only increase the splash oil discharge path of the clutch 6, but also use the oil guide channel Tp to provide lubrication for other parts of the clutch 6 in the direction of the crankshaft 3, thereby expanding the lubrication area covered by the lubricating oil.

[0079] Through the above two designs, the engine configuration of the utility model can be used to improve the lubrication of the transmission system, maintain the lubrication performance of the oil pump, and at the same time add a clutch chamber T for accommodating the clutch 6 to reduce the problem of a large amount of lubricating oil in the oil pan 20 being stirred by the clutch 6 and affecting the kinetic energy loss. The oil pump lubrication performance refers to the oil pump P drawing the lubricating oil from the oil pan 20 and promoting the distribution of the lubricating oil path to provide lubrication, heat dissipation and stable oil pressure to the crankshaft, piston, cylinder head, clutch, transmission gear and other components. The lubricating oil dispersed in various places is finally recovered to the oil pan 20 at the bottom of the crankcase 2 through the space inside the crankcase 2 or the side that communicates with the oil pan 20.

[0080] Furthermore, the number of transmission shafts of the present invention is not limited to two transmission shafts (the first transmission shaft 41 and the second transmission shaft 42), and can also be designed as a single transmission shaft (not shown). Figure 5 From this perspective, the transmission gear housing 411 of the first transmission shaft 41 can be directly designed to mesh with the output shaft gear 51 .

[0081] The above embodiments are merely examples for the convenience of explanation. The scope of rights claimed by the present utility model shall be based on the scope of protection required by the patent application documents, and is not limited to the above embodiments.

Claims

1. A fixed-lock engine, fixed to a frame of a motorcycle, characterized in that: Included are: A crankcase, the bottom of which is an oil pan, and the crankcase is separated into a clutch chamber by a clutch chamber outer wall; A crankshaft is disposed in the crankcase and is driven to pivot by the power source of the solid-lock engine; a first transmission shaft, passing through the crankcase and driven to pivot by the crankshaft; An output shaft is disposed through the crankcase, is driven by the first transmission shaft to pivot, and finally drives a rear wheel to rotate through a chain or a belt; A continuously variable transmission system, comprising a first transmission element, a second transmission element and a transmission connection member, wherein the first transmission element is disposed at one end of the crankshaft, the second transmission element is disposed at one end of the first transmission shaft and corresponds to the first transmission element, and the first transmission element drives the second transmission element through the transmission connection member; A clutch, disposed on the first transmission shaft and accommodated in the clutch chamber; as well as An oil outlet is provided in the clutch chamber to guide the lubricating oil splashed by the clutch rotation to the outside of the clutch chamber and finally flow back to the oil pan.

2. The fixed-lock engine according to claim 1, characterized in that: The first transmission shaft is provided with a transmission gear housing, the clutch drives the transmission gear housing to rotate, the output shaft is provided with an output shaft gear, and the transmission gear housing meshes with the output shaft gear.

3. A fixed engine, fixed to a frame of a motorcycle, characterized in that: Included are: A crankcase, the bottom of which is an oil pan, and the crankcase is separated into a clutch chamber by a clutch chamber outer wall; A crankshaft is disposed in the crankcase and is driven to pivot by the power source of the solid-lock engine; a first transmission shaft, passing through the crankcase and driven to pivot by the crankshaft; a second transmission shaft, passing through the crankcase and driven to pivot by the first transmission shaft; An output shaft is disposed through the crankcase, is driven by the second transmission shaft to pivot, and finally drives a rear wheel to rotate through a chain or a belt; A continuously variable transmission system, comprising a first transmission element, a second transmission element and a transmission connection member, wherein the first transmission element is disposed at one end of the crankshaft, the second transmission element is disposed at one end of the first transmission shaft and corresponds to the first transmission element, and the first transmission element drives the second transmission element through the transmission connection member; A clutch, disposed on the first transmission shaft and accommodated in the clutch chamber; as well as An oil outlet is provided in the clutch chamber to guide the lubricating oil splashed by the clutch rotation to the outside of the clutch chamber and finally flow back to the oil pan.

4. The fixed-lock engine according to claim 3, characterized in that: The first transmission shaft is provided with a transmission gear housing, and the clutch drives the transmission gear housing to rotate. The second transmission shaft is provided with a second transmission gear, which includes a first tooth portion and a second tooth portion. The output shaft is provided with an output shaft gear, and the transmission gear housing meshes with the first tooth portion, and the second tooth portion meshes with the output shaft gear.

5. The fixed-lock engine according to claim 1 or claim 3, characterized in that: The clutch chamber is provided with an oil guide outlet. The outer wall of the clutch chamber extends a guide portion toward the clutch rotation tangent direction to form an oil guide channel. The oil guide outlet is connected to the oil guide channel.

6. The fixed-lock engine according to claim 1 or claim 3, characterized in that: An oil scraping portion is disposed between the outer wall of the clutch chamber and the clutch. The oil scraping portion is connected to the crankcase and substantially envelops the clutch.

7. The fixed-lock engine according to claim 1 or claim 3, characterized in that: A collecting portion is provided on the bottom side of the clutch chamber for collecting lubricating oil splashed by the rotation of the clutch.

8. The locked engine according to claim 7, characterized in that: The collecting portion includes a stop wall and a collecting groove, the collecting groove is connected to a clutch chamber bottom wall of the clutch chamber, and the collecting groove protrudes from the clutch chamber bottom wall, so that the lubricating oil is collected by the collecting groove, flows through the clutch chamber bottom wall and is guided back to the oil pan.

9. The solid-lock engine according to claim 8, characterized in that: The collecting portion and the bottom wall of the clutch chamber substantially surround the first transmission shaft.

10. The solid-lock engine according to claim 8, characterized in that: The bottom wall of the clutch chamber is provided with an oil passage outlet.

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