TWI230773B - Pressure-reducing structure of an engine-oil pump for a scooter - Google Patents

Abstract

The present invention is to provide a kind of pressure-reducing structure of an engine-oil pump for a scooter. The pressure-reducing valve is installed on the cover of the engine-oil pump in the crankcase. This configuration can shorten the transmission path of the engine-oil form engine-oil pump to pressure-reducing valve and extend the life of the engine and engine-oil pump. Besides, it can efficiently simplify the manufacture process to install the pressure-reducing valve on the cover of the engine-oil pump in the crankcase because there is no need to fabricate an installment entrance for the pressure-reducing valve on the lubrication duct of the crankcase.

Description

1230773

[Technical field to which the invention belongs] The present invention is to provide a structure that can shorten the oil pressure relief path of a speed locomotive engine. [Prior art] The pump pressure relief structure, especially the conventionally known speed locomotive, has a steering mechanism 1, a frame 2, and a structure. As shown in the engine 3 and 2, it is mainly composed of the steering mechanism 1, the handle 12, the frame tube 21, and the support tube 2 25, which are composed of seat cushions 4 and the like. Mainly attached to the steering tube holder 2 ′ is composed of the steering tube holder 2, the lower tube 2 3, the reinforcement 1 1 a steering above the 1 1 the main tube 2 4 and the rear tube

The engine 3 is arranged below the seat cushion 4. The bow 3 includes at least one 1. The crankcase 3 1 series * left crankcase 3 1 L and right crankshaft = 3 1 R are arranged in the crankcase 3 1 There is a crankshaft 3 i 4, and a cylinder body 3 3 and a cylinder head 3 3 = are sequentially on the axle box 3 1, all of which are inclined toward the front. The w Hai seat cushion 4 'is a seat cushion shell made of a harder material, and the upper part is made of a soft material and covered with a decorative layer. With the above-mentioned structure, the driver can sit comfortably on the seat.

" Refer to the drawing of the month—'the engine 3 and the transmission case f 2 pivotally arranged on the side of the curved case 3 1 '. The transmission case 3 2 is provided with a belt transmission mechanism τ. Among them, the cylinder head 3 3 1 of the engine 3 includes a combustion chamber 3 1 1 for combustion of mixed oil and gas, a piston 3 1 2 that reciprocates in the cylinder body 3 3 of the engine 3, and the piston 3 1 2 And connected by connecting rod 3 1 3 speed

Page 5 1230773 V. Description of the invention (2) To the crankshaft 3 1 4. The belt shifting mechanism T includes a drive plate 3 2 1 provided on the crankshaft 3, 22, a drive plate 3 2 on the crankshaft 3 i 4, and a 2 321-side, and a drive plate η:? Π = plate 32 1 the other-side swash plate "3,-is restricted to: the weight of the ball 3 between the sliding plate 3 2 and the swash plate 3 2 3 J: move Π to reach the rear wheel RW The passive shaft 3 2 5, the passive disk 326 provided on the quilt 25, a clutch H 3 2 7 fixed to the passive ^, a transmission belt 3 2 8 and a transmission provided outside the = k speed mechanism T Box cover 3 2 9. Among them, the sliding plate 3 2 1 and the moving plate 3 2 2 form a driving plate of a belt transmission mechanism D. The end of the transmission belt 3 2 8 is located on the driving plate 3 2 2 And the sliding plate 3 2 ^ the other end is located between the passive plate 3 2 6. When the locomotive is operating, fresh air and fuel introduced from the outside are mixed into oil and gas, and then oil and gas are input into the engine 3 The internal combustion explosion generates power, and the piston 3 1 2 is pushed for reciprocating motion, and the belt transmission mechanism I is driven by the crankshaft 3 1 4 to achieve the purpose of travel. A partial sectional view of the engine 3 is shown in the figure. The balance shaft passive gear 3 4 is driven by the gear 1 of the crankshaft 3 1 4 to rotate the balance shaft 3 4 in the opposite direction, and the balance shaft 34 of the right crankcase 3 1R. A driving sprocket 343 is provided on the end, and the driving sprocket 3 4 3 is connected with a quilt provided on the oil pump 3 03 by a chain 3 0 1, and the sprocket 3 002 is connected by a crankshaft 3 1 4 With the rotation, the oil pump 3 03 can be actuated by using the balance shaft 34 as a medium.

Page 6 1230773 V. Description of the invention (3) Oil pump 3 0 3, which is Jinfan | When the engine 3 is running, the oil pressurizing tank [upper Ri, its main parts can be used for lubrication. After the engine oil is released, make the engine 3 internal engine 3 0, and the oil drain port 3 0 RA is provided with an oil drain port extending to an oil passage 3 0 2 o'clock, toward the left crankcase 3 1 L Bend in the extension direction to form a 4Π road; ^ the left end of the passageway 306 directs the oil vertically to the left curve, and the oil passageway 307 can be 304. The oil filter element 3 0 4 a and the oil drain 3 on the head 1 L have a transition that can pass through the oil impurities. Please refer to Figure 4 again. Figure 4 is also the conventional situation when the oil enters the oil filter engine. Deng d; see 〇4a, the filter element 3 〇4a, ^, and the file 04b flow out to the engine 3 Qiu | Ying & & After filtering, and then from the oil drain ▽ 丨 手 ύ 斗 砕All parts are moistened. : When the engine is in operation, 'the oil pump 3 〇3 is supplied for lubrication of the parts', so the pressure in some oil circuits is too high, and the pressure is relieved. The conventional engine 3 will be provided with a pressure relief valve 3 〇8 on the left crankcase. On 31 L, the excessively high pressure oil passes through the pressure relief valve; 3 08 is discharged to the bottom of the crankcase 31 and reused. However, the conventional pressure relief valve 3 0 8 is provided on the left crankcase 3 1 L of the near oil clearer 0 4 'and the oil pump 3 0 3 is provided on the right crank case 3 1 R, which results in at least The following disadvantages are caused: 1. The path for the oil output from the oil pump 3 0 3 to the steam pressure valve 3 is too long, causing the pressure relief to be too slow, which reduces the life of the oil pump 3 0 3. 1230773 V. Description of the invention (4) 2 • Due to the long pressure relief path, the green pressure is reduced and the oil durability is poor. To make the engine 3 life 3 · Must be installed in the crankcase 3 1 lubricating oil 3 0 8, resulting in crankcase ^ road ^ processing of pressure valve is how to effectively improve the complexity of the above two or two rights . Urgent issues for manufacturers. This disadvantage is actually a locomotive system. [Summary of the Invention] The main purpose of the present invention is to provide a pressure structure, which is mainly to shorten the drain path of the locomotive oil pump in the crankcase to improve the induction and output of The pressure structure of the valve = = Provides keda locomotive engine oil. It is not necessary to be on the lubricating oil path of the crankcase. "Valve :: port, which can effectively reduce the guarding process of the crankcase. ^ Valentine ’s Heart [Embodiment] In order to make it easier for panel reviewers to understand the effectiveness of the present invention, the following is explained with the diagram: Structure and structure of the speed locomotive of this month Tied under the seat cushion $ w Ά] ^ ΐ The prophets are the same, so I wo n’t repeat them here: the moving box 5 2, the transmission is free of the crankcase “-side of the combustion chamber 5 G?”: Two 2 include -For mixing oil in the cylinder body 5 3 of the delta engine 5 51230773 V. Description of the invention (5) A reciprocating piston 5 1 2 is connected to the crankshaft 514 through a connecting rod 513. And The crankcase 51 is formed by combining left and right crankcases 5 and L 1 and 5 1 R, which are divided left and right. A generator is provided on the right end of the crankshaft 5 1 4 in the horizontal direction in the crankcase 5 1. 5 1 5, the generator 5 1 5 is covered with a crankcase cover 5 1 6 on the outside, and the generator 5 1 5 drives the rotation of the silent chain 5 1 7, and the rotation of the main shaft 518 by the silent chain 5 1 7 The main shaft 5 1 8 is provided with a belt speed changing mechanism P through the left crankcase 5 1 L, and the belt speed changing mechanism P includes a A sliding disk 5 2 on the main shaft 5 1 8 1. A driving disk 5 2 disposed on the main shaft 5 1 8 and located on the side of the sliding disk 5 2 1 2. One disposed on the main shaft 5 1 8 and located on the Sliding plate 5 2 1 on the other side of the swash plate 5 2 3. A weighted ball 5 2 4 restricted to be accommodated between the sliding plate 5 2 1 and the swash plate 5 2 3. One can transmit power to the rear The passive shaft 5 2 5 of the wheel rw, the passive disk 5 2 6 provided on the passive shaft 5 2 5, a clutch 527 fixed on the passive shaft 525, a transmission belt 5 28, and a belt transmission mechanism The transmission box cover 5 2 9 outside P. Among them, the sliding disk 5 2 1 and the driving disk 5 2 2 form an active disk of a belt transmission mechanism p. One end of the driving belt 5 2 8 is located on the driving disk 5 2 2 and 嗲 slide, between 5 2 1 and the other end is located in the passive plate 5 2 6 ^ When the locomotive is operating, fresh air and fuel introduced from the outside are mixed into oil and gas, and then oil and gas are input. The internal combustion explosion of the engine 5 generates power, and the moving piston 5 1 2 makes reciprocating motion, and the crankshaft 5 i 4 passes through the main shaft 5 i 8

Page 9 1230773 V. Description of the invention (6) Drive the belt speed-changing mechanism p to perform the operation. Please refer to Figure 6, this is the start to achieve the purpose of travel. Partial cross-sectional view, the left crankcase 5 1 bow 丨 engine 5 left crankcase 5 1 L of the local valve 5 Θ, of which, from the crankshaft 5 1 is mainly provided with an oil pump 5 5, pressure relief and balance shaft 5 4-a balance is provided at the end A balance shaft 54 is provided at an appropriate place of 4, and an end is provided with a balance shaft gear 5 4 gear 5 4 1 and a crank shaft 5 1 4 — a. The two 41-cranked crankshaft gears 5 work 4 oil pump 5 5 is provided with an oil moving shaft 5 5 1-a passive 3 shaft 5 5 1 is installed at the end of the machine-a drive sprocket 54252 is set on the machine, and the balance shaft 54- The end 5 4 3 is located on the oil pump drive shaft in the second zone. The moving sprocket 5 4 2 is connected by a chain, and the oil pump 5 5 is a passive sprocket 5 5 2 on the left curve * μ end. The oil pump cover 5 5 3 Oil pump cover Π: Upper: There is a pressure relief valve 5 Θ on the wall and a pressure relief valve 5 6 on the oil pump 5 5 ^, and the engine oil pump 55 ^; ,, the left crankcase 51 " Same with-between the right crankcase 51R. With # 由 曲 :: balance shaft 54 as the medium via the drive sprocket 542 and the passive sprocket 552 can turn the oil pump drive shaft 55 丄. The pressure relief valve 5 6 'mainly It consists of-pressure relief sleeve 5 6 1, pressure relief column 5 6 2 and elastic element 5 6 3. Among them, the elastic element 5 6 3 is installed in the non-pressure sleeve 5 ..., and the heart J 5 6 1 is It is set on the oil pump cover 5 5 3, and the pressure relief sleeve 56la is provided with a pressure relief hole 56la on the wall of the sleeve. When the oil pump 5 5 is operated, the oil is pumped out by pressure and the oil will be the same.

Page 10 1230773 V. Description of the invention (7) Flows into the left and right crankcases Right crankcases 5 1 L ·, R 7 1 B, 5 1 R. But because there is a slight time difference between the 5 1 r feet flowing into the left and right crankcases, the oil will first pass through the system 5 7 and then explain: = Ming Zhi left crankcase 5 1 L oil Hachisuo i oil system 57, please Refer to Figures VI, VII, and VII for A—A cross section ^ Ming left side crankcase side view schematic diagram, and Figure 8 series 5 ..., machine = oil inlet ... enter the left crankcase oil pump 5 5 pressurized by ^ 5 a Enter the oil pump 5 5 'Exit through the machine 5 7 b, the second case is pumped out from the 5 5 b port, and then the oil is pumped out from the oil outlet 5 γ b & + 4 View, self-referred to the oil shown in the figure, t is filled in the ring groove ..., please refer to Figure 11 and Figure 10-8: Figure 7 is a view in the direction of the arrow s, a cross-sectional view of the oil from the ring groove 5 / See Figures 8, 9, and 10 AtL-\ C i'll into the oil filter (as shown in Figure 10 ^ a hypothetical line ^ 'After the oil is filtered by the oil filter, it flows into the left lubricating oil intersection D fd, and then connects a ,,. You Ren ^ You enter the left lubricating oil path 5 7 e, enter the left lubricating oil, # _ 6 of the engine oil '-partly enter the crankshaft 5 1 4 through the channel 5 7 f Refer to Figure 5), part of the oil through the passage 5 γ g 3 i, the lubricating arm of the cylinder head 5 3 and other engine oil will enter the right lubricating junction 5 8 a.: F 曲 ϋ 箱 5 1 r 之Oil circuit system $ 8, please refer to Figure X>, Figure XII 'Figure 12 is a schematic side view of the right crankcase of the present invention, and Figure XII series XII is a partial cross-sectional view of C-C, entering the right lubricating oil intersection 5 8 The oil from a flows into the right lubricating oil path 5 8 b. Please refer to Figure 14-7.

Page 111230773 ------ V. Description of the invention (8) Figure 14-D-D Engine oil will be lubricated along the oil (please enter the cylinder head 5 3 pieces. Oil drive shaft 5 5 of the invention 1 will accumulate in Qu 5 7, 5 8 〇 Please refer to Figure -1- /, 5 1 L when the oil pump 'oil pump 5 5 pumped oil pressure 桎 5 6 2 push out to the crankshaft Box 5 1 The force returned to normal | When y was in the original position. It is a partial view according to the direction of the arrow γ, and Figure 15 is a partial cross-sectional view of the engine oil and Hede pen Y, which flows into the right lubricating oil path 5 8 ~ 1 ^ 丄 4 Partially through the path 5 8 d, the path 'is roughly as described above, and is provided in the ... box through the oil pump. I ^ The oil pump pressure relief structure of the present invention, by Jiang: placed on the left crankcase τ τ, fine By setting the pressure relief valve 5 Θ directly to at least the oil fruit cap 5 5 3 of the oil pump 55, the width i: 5 ;: The path to the wave pressure valve 5 6 is greatly improved. The secondary pressure makes the machine The service life of the oil pump 5 5 is

Page 12 1230773 V. Description of the invention (9) 2 · The under pressure path is greatly shortened, and the instantaneous bubble pressure can be achieved. The life of the engine 5 and the durability of the oil can be greatly improved. 3 · Crankcase 5 Reduce crankshaft 4 · L and right curve on the return flow car. Box 5 1 is integrated on the left diameter to make the machine connected to the assembly. The parts have been compared. 6 1 Lubricating oil box 5 1 Lubricating the oil pump 5 Shaft box 5 1 R Shaft box 5 1 Bottom R. As mentioned above, the engine oil pump and engine oil pump on the crankcase of this engine are patented by the user promotion method. The trial can be directly on the road between the 5th and the drain, the middle, the space, the use of the oil pump to reduce the effectiveness of the application, the application is determined to assemble the mechanical pressure relief valve processing process pressure valve 5 6 can be too large and To increase the life of the left oil pump, the pressure of the oil pump, and the life of the oil pump cover, the crankcase has been increased. The installation structure of the oil pumps 5 5 and 5 6 installed at the left pressure engine crankcase 5 is borrowed and effective. In addition, because of the novelty of the lubricating oil circuit and the responsibility of the review committee, there is no need to be available. Effective crankcase 5: Quick oil drain Tail 1 L and right d. By reducing the pressure relief β, the pressure relief is reduced. 5 The pressure relief valve can be processed by j.

Page 13

1230773 Brief description of the drawings [Explanation of the drawings] Fig. 1 is a schematic side view of a conventional Sukhoda locomotive. Fig. 1 is a schematic view of a conventional engine section. Figure 2 is a schematic diagram of a partial cross section of a conventional engine. Figure 4 is a schematic diagram of a partial cross section of a conventional engine. Figure 5 is a schematic diagram of a cross section of the engine of the present invention. Fig. 6 is a partial sectional view of the left crankcase of the present invention. C Fig. 7 is a schematic side view of the left crankcase of the present invention. Fig. 8 is a sectional view of Fig. 7A-A. Figure IX is a partial view on the right side of Figure VIII. FIG. 10 is a view in the direction of arrow S in FIG. 7. Figure X- is a partial cross-sectional view of Figure X B-B. =: Schematic side view of the right crankcase of the second series of the present invention :: Second series of partial cross-sectional views of Figure 12C-C. :::: is a partial view of the twelve arrow in the direction of arrow ¥. Figure 15 is a series of drawings. [Description of drawing number] 1 Steering mechanism 2 Frame 2 1 Main pipe 2 3 Down pipe 2 5 Rear pipe 3 1 Crankcase 3 1 R Partial cross-sectional view of the right curve car by 3 1 2 piston D — D 1 Steering head socket 1 2 Steering handle 2 2 Support pipe 2 4 Reinforcement pipe 3 Engine case 3 1 L Left crankcase 3 1 1 Combustion chamber 3 1 3 Connecting rod

Page 141230773 Simple description of the diagram 4 Seat cushion 5 Engine 3 1 4 Crankshaft belt drive mechanism 3 2 Gearbox 3 2 1 Sliding disc 3 2 2 Drive disc V 3 2 3 Swash plate 3 2 4 Counterweight ball \! 3 2 5 Passive shaft 3 2 6 Passive disc 3 2 7 Clutch 3 2 8 Transmission belt 3 2 9 Transmission case cover 3 3 Cylinder body 3 3 1 Cylinder head 3 4 Balance shaft 3 4 1 Gear 3 4 2 Passive gear 3 4 3 Drive Sprocket 3 0 1 Chain 3 0 2 Passive sprocket 3 0 3 Oil pump 3 0 4 Oil filter 3 0 4 a Filter element 3 0 4 b Drain channel 3 0 5 Drain port 3 0 6 Oil passage 3 0 7 Oil passage 3 0 8 Pressure relief valve 5 1 Crankcase 5 1 L Left crankcase 5 1 R Right crankcase 5 1 1 Combustion chamber 5 1 2 Piston 5 1 3 Connecting rod 5 1 4 Crankshaft 5 1 5 Generator 5 1 6 Crankcase cover 5 1 7 Silent chain 5 1 8 Spindle P Belt shifting mechanism 5 2 Gearbox 5 2 1 Sliding disc 5 2 2 Drive disc 5 2 3 Swash plate

Page 151230773 Simple illustration of the figure 5 2 4 Counterweight ball 5 2 5 Passive shaft 5 2 6 Passive disc 5 2 7 Clutch 5 2 8 Transmission belt 5 3 Cylinder body 5 3 1 Cylinder head 5 4 Balance shaft 5 4 1 Balance Shaft gear 5 4 2 Horse sprocket 5 4 3 Chain 5 5 Oil pump 5 5 1 Oil pump drive shaft 5 5 2 Passive sprocket 5 5 3 Oil pump cover 5 6 Pressure relief valve 5 6 1 Pressure relief sleeve 5 6 1 a Pressure relief hole 5 6 2 Pressure relief column 5 6 3 Elastic element 5 7 Oil circuit system 5 7 a Oil inlet α 5 7 b Oil outlet π 5 7 C Ring groove 5 7 d Left lubricating oil port 5 7 e Left Lube circuit 5 7 f channel 5 7 g channel 5 8 oil circuit system 5 8 a right lube oil intersection 5 8 b right lube oil channel 5 8 c channel 5 8 d channel

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Claims (1)

1230773 VI. Scope of Patent Application— ~ ------------— Back μ i · A pressure relief structure of Sukoda locomotive oil pump. The engine is installed under the seat cushion of Sukoda locomotive. It mainly has a -cylinder head, a body and a crankcase, and an organic oil pump is arranged on the crankcase. The feature is that a pressure relief valve is provided on the pump cover of the oil pump, and the pressure relief valve and the oil fruit are arranged. Set on the same side of the crankcase. 2. The pressure relief structure of a speed locomotive oil pump as described in item i of the scope of the patent application, wherein the oil pump and pressure relief valve are arranged on the left crankcase. As described in item i of the scope of application A pressure relief structure of a speed locomotive oil pump, wherein the oil pump and the pressure relief valve are located between the left crankcase and the right crankcase. /,