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 transmission shaft, an output shaft, an oil pump chamber, an oil storage tank, a main oil pump and an oil storage pump. An oil pan is arranged at the bottom of the crankcase, an oil return part and a partition part connected with the oil return part are arranged in the crankcase, and the oil return part comprises a connecting section and a front oil return part. The partition part, the oil return part and the first blocking part divide the inner space of the crankcase into a crankcase front half part and a crankcase rear half part. The oil pump chamber is roughly wrapped by the oil pan, the first blocking part, the connecting section, the front oil return part and the second blocking part. The oil storage tank is arranged in the crankcase and communicated with the oil pump chamber through an oil return channel. The main oil pump is contained in the crankcase, an inlet of the main oil pump is located in the oil pump chamber and used for pumping lubricating oil to the oil way system, and part of the lubricating oil is distributed to the rear half portion of the crankcase. The oil storage pump is contained in the crankcase and communicated with the rear half portion of the crankcase through a first oil drawing channel. Therefore, the engine configuration is used for solving the problems that the oil pan is wide and flat, the oil pan cannot be effectively filled with lubricating oil and the like.

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. Combining the structural configuration of the fixed-lock engine 9 of the above motorcycle 90, it has the difficulties of high output shaft 95, difficult lubrication, and wide and flat oil pan.

[0003] As described above, a vehicle equipped with a locked engine 9 may be used by a rider on a steeper road. When the lubricating oil in the oil pan cannot be effectively filled, the oil pump 96 will suck in air, and the oil pressure in the main lubricating oil circuit cannot be established, causing irreparable damage to the engine parts.

[0004] 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

[0005] The main purpose of the utility model is to provide a solid-locked engine. Through the engine configuration of the utility model, the lubrication of the transmission system is improved and the lubrication performance of the oil pump is maintained. At the same time, an oil storage system is established in the solid-locked engine to help the recycling of lubricating oil and to solve the problems of the oil pan being wide and flat and the lubricating oil being unable to effectively fill the oil pan.

[0006] To achieve the above-mentioned purpose, the utility model provides a fixed-lock engine, which is fixed to a frame of a motorcycle, including a crankcase, a crankshaft, a transmission shaft, an output shaft, a stepless transmission system, an oil pump chamber, an oil storage tank, a main oil pump and an oil storage pump.

[0007] The bottom of the crankcase is an oil pan, and an oil return portion and a partition portion connected to the oil return portion are provided in the crankcase. The oil return portion includes a connecting section and a front oil return portion. The connecting section is connected to the oil pan by a first blocking portion, and the front oil return portion is connected to the oil pan by a second blocking portion. The partition portion, the oil return portion and the first blocking portion divide the space in the crankcase into a front half of the crankcase and a rear half of the crankcase. The crankshaft is provided in the crankcase and is driven to pivot by the power source of the fixed-lock engine. The transmission shaft is provided in the crankcase and is driven to pivot by the crankshaft. A transmission shaft oil passage is provided inside the transmission shaft, and at least one transmission shaft oil passage outlet is opened. The output shaft is provided in the crankcase and is driven to pivot by the transmission shaft, and finally drives a rear wheel to rotate through a chain or a belt. The stepless transmission system includes a first transmission element, a second transmission element and a transmission connection member. The first transmission element is arranged at one end of the crankshaft, the second transmission element is arranged at one end of the transmission shaft and corresponds to the first transmission element, and the first transmission element drives the second transmission element with the transmission connection member. The oil pump chamber is roughly covered by the oil pan, the first blocking part, the connecting section, the front oil return part and the second blocking part. The oil storage tank is arranged in the crankcase and connected to the oil pump chamber by an oil return channel. The main oil pump is accommodated in the crankcase, and the inlet of the main oil pump is located in the oil pump chamber, which is used to pump lubricating oil to an oil circuit system connected to the transmission shaft oil channel. The lubricating oil in the transmission shaft oil channel is finally discharged and refluxed to the rear half of the crankcase. The oil storage pump is accommodated in the crankcase and connected to the rear half of the crankcase by a first oil suction channel.

[0008] The crankcase may also be provided with a crank chamber, in which a crankshaft is passed through, and an opening of the crank chamber is connected to the front half of the crankcase, so that the lubricating oil in the crank chamber can flow back to the front half of the crankcase.

[0009] A one-way device may be provided at the opening of the crank chamber so that the lubricating oil in the crank chamber can only leave the crank chamber in one direction.

[0010] The oil storage pump can be connected to the crank chamber through a second oil extraction passage, so that the oil storage pump can extract lubricating oil in the rear half of the crankcase and the crank chamber at the same time.

[0011] The crank chamber may not be connected to the front half of the crankcase, so that the lubricating oil in the crank chamber can only flow back to the oil storage pump through the second oil suction channel.

[0012] The crankcase may also be provided with a clutch chamber, in which a transmission shaft is passed through and the clutch chamber is connected to the rear half of the crankcase via a channel portion.

[0013] The crankcase may include a left crankcase and a right crankcase, the main oil pump is located on one side of the left crankcase, and the oil storage pump is located on the other side of the main oil pump assembly side.

[0014] The axis of the main oil pump and the axis of the oil storage pump are coaxially arranged in series, so that the oil storage pump can be arranged on the other side of the crankcase where the main oil pump is arranged, so as to achieve the purpose of simplified and compact design configuration.

[0015] When the above-mentioned solid-lock engine is observed from the axial direction of the crankshaft, the oil storage tank can be roughly located in the area surrounded by the crankshaft, the transmission shaft and the oil storage pump, and can be connected to the front half of the crankcase through a vent.

[0016] The oil return portion may further include a rear oil return portion, and an exhaust hole may be provided between the rear oil return portion, the connecting section and the first blocking portion.

[0017] The above-mentioned solid-locked engine has an oil drain hole in the oil pan located between the front half and the rear half of the crankcase. A leak-proof element can be installed in the oil drain hole to prevent the lubricating oil from leaking out, or the leak-proof element can be removed to simultaneously drain the lubricating oil from the front half and the rear half of the crankcase.

[0018] 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

[0019] Figure 1 The figure is a side view of a conventional fixed-lock engine installed on a scooter.

[0020] 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.

[0021] 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.

[0022] Figure 4 It is a structural schematic diagram of the first embodiment of the utility model, wherein the locking engine is located inside the crankcase and viewed from the axial direction.

[0023] Figure 5 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.

[0024] Figure 6 for Figure 5 AA section view.

[0025] Figure 7 for Figure 5 BB cross-sectional view.

[0026] Figure 8 It is a schematic diagram of the leakage-proof element corresponding to the oil leakage hole of the first embodiment of the utility model.

[0027] Fig. 9 It is a schematic diagram of the oil circuit of the solid-lock engine of the second embodiment of the utility model, viewed from the axial direction inside the crankcase.

[0028] Fig.10 It is a schematic diagram of the oil circuit of the locked engine of the third embodiment of the utility model, viewed from the axial direction inside the crankcase.

[0029] Description of main component symbols:

[0030] 1, 1', 1" Lock-on Engine

[0031] 2 Crankcase

[0032] 20 Oil pan

[0033] 21 Oil return section

[0034] 211 front oil return part

[0035] 212 Rear oil return section

[0036] 213 Connection segment

[0037] 22 First blocking part

[0038] 23 Second blocking part

[0039] 25 Divider

[0040] 26 Left crankcase

[0041] 261 Left

[0042] 262 Right

[0043] 27 Right crankcase

[0044] 3 Crankshaft

[0045] 4 Drive shaft

[0046] 4a Drive shaft oil passage

[0047] 41 Channel Department

[0048] 5 Output shaft

[0049] 5a Output shaft oil passage

[0050] 6 Main oil pump

[0051] 6a Axis

[0052] 7 Oil storage pump

[0053] 7a Axis

[0054] 70 Oil return channel

[0055] 71 First Oil Pumping Channel

[0056] 72 Second Oil Pumping Channel

[0057] 81 One-way device

[0058] 82 Leakage-proof element

[0059] 83 Continuously variable transmission

[0060] 831 First transmission element

[0061] 832 Second transmission element

[0062] 833 Transmission connector

[0063] 84 Transmission gear set

[0064] 85 Oil system

[0065] 9 Locking engine

[0066] 90 Motorcycle

[0067] 901 Frame

[0068] 91 Clutch

[0069] 92 Crankcase

[0070] 93 Crankshaft

[0071] 94 Drive shaft

[0072] 95 Output shaft

[0073] 96 Oil Pump

[0074] 97 Swingarm

[0075] 98 rear wheel

[0076] 99 Chain

[0077] C Clutch chamber

[0078] C1, C2, C3 Axis

[0079] E Output shaft oil passage outlet

[0080] e Transmission shaft oil passage outlet

[0081] H Ventilation

[0082] h1 exhaust hole

[0083] h2 oil drain hole

[0084] P1 Crankcase front half

[0085] P2 Crankcase rear half

[0086] R Oil pump room

[0087] S Crankcase

[0088] W Oil tank DETAILED DESCRIPTION

[0089] See also Figures 3 to 7 , 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 in the axial direction, a structural schematic diagram viewed from the inside of the crankcase and in the axial direction, a schematic diagram of the oil circuit viewed from the inside of the crankcase and in the axial direction, Figure 5 AA section view and Figure 5 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 transmission shaft 4, an output shaft 5, a stepless transmission system 83, a transmission gear set 84, an oil pump chamber R, an oil storage tank W, a main oil pump 6 and an oil storage pump 7.

[0090] In this embodiment, the crankcase 2 is composed of a left crankcase 26 and a right crankcase 27. The bottom of the crankcase 2 is an oil pan 20. The crankcase 2 is provided with an oil return portion 21, a partition 25 connected to the oil return portion 21, a crank chamber S and a clutch chamber C. The oil return portion 21 includes a front oil return portion 211, a rear oil return portion 212 and a connecting section 213. The connecting section 213 is connected to the oil pan 20 via a first blocking portion 22, and the front oil return portion 211 is connected to the oil pan 20 via a second blocking portion 23. The partition 25, the connecting section 213 and the first blocking portion 22 divide the space inside the crankcase 2 into a front half P1 of the crankcase and a rear half P2 of the crankcase. The opening of the crank chamber S is connected to the front half P1 of the crankcase, and a one-way device 81 is provided at the opening, so that the lubricating oil in the crank chamber S can only leave the crank chamber S in one direction and flow back to the front half P1 of the crankcase. The clutch chamber C is connected to the rear half P2 of the crankcase through a channel portion 41, so that part of the lubricating oil distributed to the transmission shaft 4 flows back to the rear half P2 of the crankcase. In addition, Figure 6 As shown, the main oil pump 6 is arranged on one side of the left crankcase 26, and the oil storage pump 7 is arranged on the other side of the assembly side of the main oil pump 6. The main oil pump 6 of this embodiment is arranged on the left side 261 of the left crankcase 26, and the oil storage pump 7 is arranged on the right side 262 of the left crankcase 26, but it is not limited to this. The main oil pump 6 can also be arranged on the right side 262 of the left crankcase 26, and the oil storage pump 7 can be arranged on the left side 261 of the left crankcase 26, or the main oil pump 6 and the oil storage pump 7 can be respectively arranged on the left and right sides of the right crankcase 27, or the main oil pump 6 and the oil storage pump 7 can be respectively arranged on the left crankcase 26 and the right crankcase 27, etc.

[0091] The crankshaft 3 is disposed in the crankshaft chamber S of the crankcase 2 and is driven to pivot by the power source of the solid-lock engine 1. The transmission shaft 4 is disposed in the clutch chamber C of the crankcase 2 and is driven to pivot by the crankshaft 3. A transmission shaft oil passage 4a is provided inside the transmission shaft 4 and is provided with at least one transmission shaft oil passage outlet e. The output shaft 5 is disposed in the crankcase 2 and is driven to pivot by the transmission shaft 4 and is finally connected to the output shaft 5 by a chain (same as the prior art) Figure 1 A chain 99) or a belt drives a rear wheel to rotate, and an output shaft oil passage 5a is provided inside the output shaft 5, which is provided with at least one output shaft oil passage outlet E. The stepless transmission system 83 includes a first transmission element 831, a second transmission element 832 and a transmission connection 833. The first transmission element 831 is provided at one end of the crankshaft 3, and the second transmission element 832 is provided at one end of the transmission shaft 4 and corresponds to the first transmission element 831. The first transmission element 831 drives the second transmission element 832 with the transmission connection 833, so that the crankshaft 3 drives the transmission shaft 4 to pivot through the stepless transmission system 83. In this embodiment, the transmission connection 833 can be a belt. The transmission gear set 84 is respectively connected to the transmission shaft 4 and the output shaft 5, so that the transmission shaft 4 drives the output shaft 5 to pivot through the transmission gear set 84. The oil pump chamber R is generally covered by the oil pan 20, the first blocking portion 22, the connecting section 213, the front oil return portion 211 and the second blocking portion 23, and is used to store lubricating oil for the main oil pump 6 to draw and pump. The oil storage tank W is arranged in the crankcase 2, and is connected to the oil pump chamber R through an oil return passage 70, so that the lubricating oil deposited in the oil storage tank W can flow back to the oil pump chamber R. Observed from the axial direction of the crankshaft 3, the oil storage tank W is generally located in the area surrounded by the crankshaft 3, the transmission shaft 4 and the oil storage pump 7, that is, the oil storage tank W is generally located between the crankshaft 3 and the transmission shaft 4, and is generally located above the oil storage pump 7, and is connected to the front half P1 of the crankcase through a vent H. The inlet of the main oil pump 6 is located in the oil pump chamber R, and is used to pump lubricating oil to an oil circuit system 85 connected to the transmission shaft oil passage 4a and the output shaft oil passage 5a. The lubricating oil in the transmission shaft oil passage 4a and the output shaft oil passage 5a is finally discharged and refluxed to the rear half of the crankcase P2, so that the peripheral parts located at the transmission shaft 4 and the output shaft 5 can obtain heat dissipation and lubrication. The oil storage pump 7 is connected to the rear half of the crankcase P2 through a first oil suction channel 71, and is used to suck the lubricating oil in the rear half of the crankcase P2 into the oil storage tank W. Among them, as Figure 6 As shown, the axis 6a of the main oil pump 6 of this embodiment is coaxially arranged in series with the axis 7a of the oil storage pump 7, so that the oil storage pump 7 can be arranged on the other side of the main oil pump 6 to achieve the purpose of simplifying and compacting the design configuration.

[0092] Please also read Figure 8, is a schematic diagram of the leakage-stopping element corresponding to the oil leakage hole of the first embodiment of the utility model. As shown in the figure, an exhaust hole h1 is provided between the rear oil return portion 212, the connecting section 213 and the first blocking portion 22 in the crankcase 2, and the front half P1 of the crankcase and the rear half P2 of the crankcase are not connected except for the exhaust hole h1, which can effectively prevent the lubricating oil from being moved by inertia and the oil pump chamber R cannot be filled. In addition, the oil pan 20 located between the front half P1 of the crankcase and the rear half P2 of the crankcase is provided with an oil leakage hole h2, and the oil leakage hole h2 can be assembled with a leakage-stopping element 82 to block the front half P1 of the crankcase and the rear half P2 of the crankcase to prevent the lubricating oil from leaking out, or the leakage-stopping element 82 is removed to connect the front half P1 of the crankcase and the rear half P2 of the crankcase to discharge the lubricating oil of the front half P1 of the crankcase and the rear half P2 of the crankcase at the same time.

[0093] Through the above structural design, Figures 5 to 7 As shown, the implementation method of the oil storage system of the solid-lock engine 1 of the utility model can be mainly divided into the pumping oil circuit of the main oil pump 6 and the pumping oil circuit of the oil storage pump 7. In the pumping oil circuit of the main oil pump 6, the main oil pump 6 draws the lubricating oil from the oil pump chamber R to pump it to the oil circuit system 85, and part of the lubricating oil is distributed to the rear half of the crankcase P2, so that the peripheral parts located at the transmission shaft 4 and the output shaft 5 can obtain heat dissipation and lubrication. Among them, there are two sources of lubricating oil in the oil pump chamber R, one is the lubricating oil deposited in the oil storage tank W that flows back to the oil pump chamber R through the oil return channel 70; the other is the lubricating oil in the front half of the crankcase P1 flows through the front oil return part 211 to the oil pan 20, and then flows back to the oil pump chamber R. On the other hand, in the pumping oil circuit of the oil storage pump 7, the first oil suction channel 71 connected to the rear half of the crankcase P2 is used to draw the lubricating oil from the rear half of the crankcase P2 and pump it into the oil storage tank W. The lubricating oil in the oil storage tank W then flows back to the oil pump chamber R of the front half of the crankcase P1 by gravity, so that the lubricating oil effectively fills the oil pump chamber R.

[0094] See also Fig. 9 , is a schematic diagram of the oil circuit of the second embodiment of the utility model, which is viewed from the axial direction on the inner side of the crankcase of the solid-locked engine. The figure shows another solid-locked engine 1', whose basic structure is the same as that of the first embodiment, except that: the oil storage pump 7 has a first oil suction channel 71 connected to the rear half of the crankcase P2, which is used to draw the lubricating oil from the rear half of the crankcase P2 into the oil storage tank W, and a second oil suction channel 72 connected to the crank chamber S, which is used to draw the lubricating oil from the crank chamber S into the oil storage tank W, so that the oil storage pump 7 can draw the lubricating oil from the rear half of the crankcase P2 and the crank chamber S at the same time. In addition, because a one-way device 81 is provided at the opening of the crank chamber S, the lubricating oil in another part of the crank chamber S can leave the crank chamber S unidirectionally and flow back to the front half of the crankcase P1.

[0095] See also Fig.10, is a schematic diagram of the oil circuit of the third embodiment of the utility model, the solid-locked engine is viewed from the inner side of the crankcase and 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 oil storage pump 7 has a first oil suction channel 71 connected to the rear half of the crankcase P2, which is used to draw the lubricating oil from the rear half of the crankcase P2 into the oil storage tank W, and a second oil suction channel 72 is connected to the crank chamber S, which is used to draw the lubricating oil from the crank chamber S into the oil storage tank W, so that the oil storage pump 7 can draw the lubricating oil from the rear half of the crankcase P2 and the crank chamber S at the same time. In addition, because the crank chamber S is not connected to the front half of the crankcase P1, the lubricating oil in the crank chamber S can only flow back to the oil storage pump 7 through the second oil suction channel 72, and cannot flow back to the front half of the crankcase P1.

[0096] 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, an oil return portion and a partition portion connected to the oil return portion are arranged in the crankcase, the oil return portion includes a connecting section and a front oil return portion, the connecting section is connected to the oil pan via a first blocking portion, the front oil return portion is connected to the oil pan via a second blocking portion, the partition portion, the oil return portion and the first blocking portion divide the space in the crankcase into a front half of the crankcase and a rear half of the crankcase; A crankshaft is disposed in the crankcase and is driven to pivot by the power source of the solid-lock engine; A transmission shaft is inserted into the crankcase and driven by the crankshaft to pivot. A transmission shaft oil passage is disposed inside the transmission shaft and has at least one transmission shaft oil passage outlet; An output shaft is disposed through the crankcase and is driven by the 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 transmission shaft and corresponds to the first transmission element, and the first transmission element drives the second transmission element through the transmission connection member; An oil pump chamber, which is substantially covered by the oil pan, the first blocking portion, the connecting section, the front oil return portion and the second blocking portion; An oil storage tank is disposed in the crankcase and is connected to the oil pump chamber through an oil return passage; a main oil pump, accommodated in the crankcase, the inlet of the main oil pump being located in the oil pump chamber, for pumping lubricating oil to an oil circuit system connected to the transmission shaft oil passage, the lubricating oil in the transmission shaft oil passage being eventually discharged and returned to the rear half of the crankcase; as well as An oil storage pump is accommodated in the crankcase and communicated with the rear half of the crankcase through a first oil suction channel.

2. The fixed-lock engine according to claim 1, characterized in that: The crankcase is also provided with a crankshaft chamber, in which the crankshaft is passed through, and the opening of the crankshaft chamber is connected to the front half of the crankcase.

3. The fixed-lock engine according to claim 2, characterized in that: A one-way device is arranged at the opening of the crank chamber.

4. The solid-lock engine according to claim 2, characterized in that: The oil storage pump is connected to the crankshaft chamber via a second oil suction channel.

5. The fixed-lock engine according to claim 4, characterized in that: The crank chamber is not connected to the front half of the crankcase.

6. The solid-lock engine according to claim 1, characterized in that: The crankcase is also provided with a clutch chamber, in which the transmission shaft is passed through and is connected to the rear half of the crankcase via a channel portion.

7. The solid-lock engine according to claim 1, characterized in that: The crankcase includes a left crankcase and a right crankcase. The main oil pump is located on one side of the left crankcase, and the oil storage pump is located on the other side of the main oil pump assembly side.

8. The solid-lock engine according to claim 1, characterized in that: The axis of the main oil pump is coaxially arranged in series with the axis of the oil storage pump.

9. The solid-lock engine according to claim 1, characterized in that: Observed from the axial direction of the crankshaft, the oil storage tank is roughly located in the area surrounded by the crankshaft, the transmission shaft and the oil storage pump, and is connected to the front half of the crankcase through a vent.

10. The solid-lock engine according to claim 1, characterized in that: The oil return portion further comprises a rear oil return portion, and an exhaust hole is provided between the rear oil return portion, the connecting section and the first blocking portion.

11. The solid-lock engine according to claim 1, characterized in that: The oil pan located between the front half of the crankcase and the rear half of the crankcase is provided with an oil drain hole, and a leak-proof element is assembled in the oil drain hole to prevent the lubricating oil from leaking out, or the leak-proof element can be removed to simultaneously drain the lubricating oil in the front half of the crankcase and the rear half of the crankcase.

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