CN101082292A - Pump driving device in engine - Google Patents
Pump driving device in engine Download PDFInfo
- Publication number
- CN101082292A CN101082292A CN 200710105511 CN200710105511A CN101082292A CN 101082292 A CN101082292 A CN 101082292A CN 200710105511 CN200710105511 CN 200710105511 CN 200710105511 A CN200710105511 A CN 200710105511A CN 101082292 A CN101082292 A CN 101082292A
- Authority
- CN
- China
- Prior art keywords
- pump
- camshaft
- mentioned
- bolt
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
To transmit large driving torque to a pump shaft from a camshaft, without substantially reducing an effective support surface of a journal part of the camshaft.The pump driving device in an engine drives the pump shaft 32 of a pump 21 installed in an engine body 11 by the camshaft 20 for a valve system supported by the engine body 11. While threadably attaching a bolt 23 having a head part 23a with a square hole 23c to one end part of the camshaft 20, a square shaft part 32a fitted to the square hole 23c is formed in one end part of the pump shaft 32, and the pump shaft 32 is driven from the camshaft 20 via these square hole 23c and square shaft part 32a.
Description
Technical field
The present invention relates to the improvement of the pump drive of motor, the pump drive of this motor comes the pump shaft of the pump of drive installation on engine main body by being supported in valve on the engine main body with camshaft.
Background technique
The pump drive of this motor as disclosed in the real public clear 56-27367 specification of Japan by known.
; in this pump drive in the past; on the collar in the bearing hole that is supported in engine main body of camshaft the drive pin that crosses this collar is installed; on the pump shaft of pump, be formed with the undercut groove that engages with this drive pin; via these drive pins and the next rotation of transmitting camshaft to pump shaft of undercut groove; but in order on the above-mentioned collar of camshaft, to do one's utmost to guarantee its bigger effective Area of bearing; and the mounting hole of drive pin is formed significantly; therefore be difficult to use large diameter drive pin, thereby the driving of the big magna pump that is unsuitable for loading.
Summary of the invention
The present invention finishes in view of the above problems, its purpose is to provide a kind of pump drive of above-mentioned motor, the pump drive of this motor can be from camshaft to the bigger driving torque of pump shaft transmission, and effective supporting surface of the collar of camshaft is not had any reduction.
For reaching above-mentioned purpose, of the present invention first is characterised in that, the pump drive of motor uses the valve that is supported on the engine main body to come the pump shaft that is installed on the pump on the engine main body is driven with camshaft, on an end of above-mentioned camshaft, fixedly installed driver part, on an end of above-mentioned pump shaft, be formed with the angle axial region that is embedded in hole, above-mentioned angle on the other hand with hole, angle.
In accordance with a first feature of the invention, owing on an end of camshaft, fixedly installed driver part with hole, angle, on an end of above-mentioned pump shaft, be formed with the angle axial region that is embedded in hole, above-mentioned angle on the other hand, via these holes, angle and angle axial region from camshaft to the pump shaft transfer drive torque, so can drive pump shaft with bigger driving torque from camshaft, and effective supporting surface of the collar of camshaft is not had any reduction, and because the chimeric area of hole, angle and angle axial region is big, so can also realize the raising of the durability of these embedding parts.
And second feature of the present invention is on the basis of first feature, and the bolt that above-mentioned driver part utilization screws tight on above-mentioned camshaft constitutes, and constitutes hole, above-mentioned angle by the spanner embedding hole on the head that is formed at this bolt.
According to second feature of the present invention, as the driver part that drives pump shaft, use the bolt that has driving hole at head, and hole, above-mentioned angle is also used as its driving hole, thereby can realize the simplification of the structure of pump drive, can cheapness provide this device.
And then, the of the present invention the 3rd is characterised in that, the pump drive of motor uses the valve that is supported on the engine main body to come the pump shaft that is installed on the pump on the engine main body is driven with camshaft, on an end of above-mentioned camshaft, use the bolt run through impulse rotor and to screw tight on this camshaft to fix this impulse rotor, this bolt and with the opposed above-mentioned pump shaft of this bolt on form chimeric mutually and embedding part can transmitting torque.
According to the 3rd feature of the present invention, the bolt of having fixed impulse rotor on the end of camshaft is also used as pump shaft is connected to mating part on the camshaft, owing to do not need oil pump is connected to the mating part of the special use on the camshaft, so can drive oil pump with the less simple structure of number of components, can bring the reduction of the cost of this drive unit.
And the 4th feature of the present invention is on the basis of the 3rd feature, and the hole, angle of the chimeric usefulness of spanner that the embedding part utilization of this bolt side is formed at the head of above-mentioned bolt constitutes; The angle axial region that the embedding part utilization of this pump shaft side is formed at an end of above-mentioned pump shaft constitutes.
According to the 4th feature of the present invention, particularly the embedding part utilization of the bolt side hole, angle of the chimeric usefulness of spanner that is arranged at the head of this bolt constitutes, therefore need not on this bolt, to be formed for the joint that is connected with pump shaft, thereby can realize the further simplification of the structure of above-mentioned drive unit, and the chimeric transmission that can realize high pulling torque of the angle axial region of the hole, angle of bolt and pump shaft, can realize the raising of the durability of these embedding parts.
Have, the 5th feature of the present invention on the basis of the 3rd or the 4th feature, forms the screw spindle part on the above-mentioned camshaft of being combined on of above-mentioned bolt again, and the load of said pump act as the moment of torsion of tightening direction to this bolt when above-mentioned camshaft rotates.
According to the 5th feature of the present invention, in the pump of camshaft drives, on above-mentioned bolt, acting on the moment of torsion of tightening direction all the time, thereby can prevent the loosening of above-mentioned bolt.
And above-mentioned engine main body is corresponding to the cylinder head in the embodiments of the invention described later 11, and pump is corresponding to oil pump 21.
According to the explanation of the following preferred embodiment that describes in detail according to accompanying drawing, above-mentioned and other purpose, feature and advantage of the present invention can be clearer.
Description of drawings
Fig. 1 is the profile with machine outside of pump drive of the present invention,
Fig. 2 is the amplification profile of Fig. 12 ones (pump drive portions),
Fig. 3 is the sectional drawing along the 3-3 line of Fig. 2,
Fig. 4 is the exploded perspective view of the major component of Fig. 2,
Fig. 5 is the sectional drawing along the 5-5 line of Fig. 2,
Fig. 6 is the sectional drawing along the 6-6 line of Fig. 2.
Embodiment
The preferred embodiments of the present invention are described below with reference to the accompanying drawings.
At first, in Fig. 1, the dead ahead of the housing 1 of machine O disposes the running shaft 4 of vertical direction overboard, this running shaft 4 is via upper arm 2 and postbrachium 3 and be installed on the housing 1, this running shaft 4 is supported to rotation rotary shell 5 freely, be connected with tailstock 6 on the crossbeam that is clamped in hull (transom) Bt via the sloping shaft 7 of substantially horizontal.Therefore, housing 1 turns to about can carrying out around running shaft 4, and can be around having a down dip on the sloping shaft 7.Be mounted with the motor E of the water-cooled 4 stroke formulas that covered by removable engine hood 8 on the top of this housing 1.
This motor E makes the bent axle 10 of vertical placement approach running shaft 4, and cylinder head 11 is loaded towards the rear.In housing 1, disposed the vertical placement that is driven by bent axle 10 output shaft 12 and from this output shaft 12 via forward-reverse change gear device 13 propeller shaft 14 of driven horizontal arrangement, be mounted with propulsion device 15 at propeller shaft 14 from the outstanding rearward end of housing 1.And in housing 1, dispose the fuel tank 9 of oil that storage is used for lubricating engine E.
On the cylinder head 11 of motor E, the camshaft 20 that the valve that is driven via timing transmission device 19 with 1/2 reduction speed ratio by bent axle 10 is used is supported with the attitude parallel with bent axle 10, and the oil pump 21 that is driven by this camshaft 20 is installed on the bottom of cylinder head 11.Oil in the above-mentioned fuel tank 9 of these oil pump 21 suctions comes the lubricated portion of supply engine E.
With reference to Fig. 2 to Fig. 6 this oil pump 21 and drive unit thereof is described.
In Fig. 2 to Fig. 4, in the lower end of above-mentioned camshaft 20, with aftermentioned mode fixed pulse rotor 22, this impulse rotor 22 is formed with a plurality of projection 22a, 22a on the precalculated position of outer circumferential face by bolt 23 ...On impulse rotor 22, heart portion is provided with mounting hole 22b therein, is provided with the location indentations 22c concentric with mounting hole 22b at the upper surface of mounting hole 22b, key 22d from the inner peripheral surface of location indentations 22c by outstanding setting the integratedly.On the other hand, give prominence to integratedly on the lower end surface of camshaft 20 and be provided with the boss 20a concentric with it, the central part of this boss 20a is provided with tapped hole 20b, and the outer circumferential face of this boss 20a is provided with keyway 20c.The head 23a of bolt 23 is provided with in the hole, angle of the chimeric usefulness of spanner of the central part opening of its lower end surface, hexagon ring 23c preferably is set.
When being fixed to impulse rotor 22 on the camshaft 20, location indentations 22c with impulse rotor 22 is embedded on the boss 20a of camshaft 20 respectively, and key 22d is embedded in keyway 20c, screws the screw spindle part 23b that is interspersed in the bolt 23 among the mounting hole 22b in tapped hole 20b and tighten.The operation that screws of this bolt 23 is to utilize the spanner among the hexagon ring 23c that is embedded in this head 23a to carry out.
On cylinder head 11, be fixed with and the opposed pulsed coil 25 of the outer circumferential face of above-mentioned impulse rotor 22 (with reference to Fig. 3) by bolt 26.When each projection 22a of impulse rotor 22 peripheries passes through pulsed coil 25 dead aheads (, on predetermined crank position or piston position), this pulsed coil 25 just produces pulse signal, this pulse signal is used to the various control apparatuss of motor E, for example action of ignition mechanism, fuel injection system etc.
In Fig. 2, Fig. 5 and Fig. 6, in the bottom of cylinder head 11 oil pump 21 is installed, this oil pump 21 is driven via above-mentioned bolt 23 by camshaft 20.This oil pump 21 has pump casing 28, a plurality of bolts 27,27 of these pump casing 28 usefulness ... be fixed on the lower end surface of cylinder head 11.On this pump casing 28, be provided with: location cylindrical part 28a; Bearing hole 28b with this location cylindrical part 28a arranged in co-axial alignment; With with respect to this bearing hole 28b off-centre the pump chamber 28c of circle of certain distance.This location cylindrical part 28a is embedded among the positioning hole 11a, and this positioning hole 11a is at the lower surface opening of cylinder head 11, and coaxial with camshaft 20.Therefore, under this chimeric status, bearing hole 28b also with camshaft 20 arranged in co-axial alignment.And positioning hole 11a has shoulder 11b, this shoulder 11b be formed at the flange 20d butt of the underpart periphery of camshaft 20, location cylindrical part 28a also have with this shoulder 11b collaboratively limit flange 20d be the axially movable effect of camshaft 20.
In pump chamber 28c, rotate the chimeric freely external rotor 30 that has, dispose and its internal rotor 31 in the inboard of this external rotor 30 in sidepiece engagement, chimeric and drive the pump shaft 32 of this internal rotor 31 with the axis hole 31a of this internal rotor 31, rotation is supported among the bearing hole 28b freely.
Formed hexagonal axial region 32a on an end of this pump shaft 32, this hexagonal axial region 32a is embedded among the hexagon ring 23c of head 23a of above-mentioned bolt 23; And another end of this pump shaft 32 is provided with the key 33 (with reference to Fig. 4) of pin shape, among the keyway 31b of the incision-like of the axis hole 31a upper shed that this key 33 is sticked at internal rotor 31.Like this, pump shaft 32 is connected with camshaft 20 via bolt 23, and is connected with internal rotor 31 via key 33.
At the lower surface of pump casing 28 with a plurality of bolts 35,35 ... engaging the pump cover 34 that seals pump chamber 28c.And screw spindle part 23b above-mentioned bolt 23, that be combined on the camshaft 20 forms, and the load of oil pump 21 act as the moment of torsion of tightening direction to this bolt 23 when camshaft 20 rotations.Like this, oil pump 21 constitutes the trochoid formula.
As shown in Figure 5 and Figure 6, on pump casing 28, be provided with suction port 36 and exhaust port 37, on this suction port 36, connecting suction pipe 38 (with reference to Fig. 1), this suction pipe 38 is immersed in the oil in reserve in the above-mentioned fuel tank 9, is connecting the lubricating oil path (not shown) that is communicated with the lubricated portion of motor E on the exhaust port 37.Therefore, oil pump 21 can be by the cooperation of internal rotor 31 and external rotor 30 be drawn oil in the fuel tank 9 by suction port 36, and this oil is supplied with by the lubricated portion of exhaust port 37 to motor E.And, in Fig. 5, symbol 39 expression relief valves.
The following describes the effect of present embodiment.
In the running of motor E, the rotation of the camshaft 20 that valve is used is delivered to the impulse rotor 22 that is fixed on the underpart of this camshaft 20 with bolt 23, and pass to hexagonal axial region 32a is entrenched in pump shaft 32 among the hexagon ring 23c of head 23a of bolt 23, they are rotated driving.And, rely on the rotation of impulse rotor 22, pulsed coil 25 produces the pulse signal of the action that is used for various control gear as mentioned above on predetermined crank position or piston position, and rely on the rotation of pump shaft 32, draw the oil of fuel tank 9 as mentioned above by the cooperation of internal rotor 31 and external rotor 30, with the lubricated portion of its supply engine E.
Like this, impulse rotor 22 is fixed on the bolt 23 on the end of camshaft 20, become mating part, camshaft 20 is connected on the pump shaft 32 of oil pump 21, so do not need to be specifically designed to oil pump 21 is not connected to mating part on the camshaft 20, therefore can drive oil pump 21 by the less simple structure of number of components, can reduce the cost of this drive unit.
And, because above-mentioned bolt 23 is also used as impulse rotor 22 is fixed on fixed component on the end of camshaft 20, thus in possessing the motor E of impulse rotor 22, can cut down number of components on the whole, the implementation structure simplification, and then reduce cost.
And, the linkage structure of bolt 23 and pump shaft 32 is the hexagon ring 23c by the chimeric usefulness of spanner on the head 23a that is arranged at bolt 23, constitute with the chimeric of hexagonal axial region 32a on the end that is formed at pump shaft 32, therefore can drive pump shaft 32 with bigger driving torque from camshaft 20, and effective supporting surface of the collar of camshaft 20 is not had any reduction, and because the chimeric area of hexagon ring 23c and hexagonal axial region is big, so the surface pressure of these embedding parts can be suppressed low, realize the raising of the durability of embedding part.Have again, need not on bolt 23, to be formed for especially the embedding part that it is connected with pump shaft 32, therefore can more help the structure of above-mentioned drive unit further to simplify.
In addition, because the screw spindle part 23b that is combined in the camshaft 20 of bolt 23 forms, the load of oil pump 21 act as the moment of torsion of tightening direction to this bolt 23 when camshaft 20 rotations, so in the driving of oil pump 21, above-mentioned bolt 23 is acted on the moment of torsion that tightening direction is arranged all the time, can prevent the loosening of this bolt 23.
The invention is not restricted to the foregoing description, can in the scope that does not break away from its purport, carry out various designs and change.For example, pump drive of the present invention also can be applied in the driving of water pump.
Claims (5)
1. the pump drive of a motor, the pump drive of this motor use the valve that is supported on the engine main body (11) with camshaft (20) pump shaft (32) that is installed on the pump (21) on the engine main body (11) to be driven, it is characterized in that,
On an end of above-mentioned camshaft (20), fixedly installed driver part (23), on an end of above-mentioned pump shaft (32), be formed with the angle axial region (32a) that is embedded in the hole, above-mentioned angle (23c) on the other hand with hole, angle (23c).
2. the pump drive of motor according to claim 1 is characterized in that,
The bolt (23) that above-mentioned driver part utilization screws tight on above-mentioned camshaft (20) constitutes, and constitutes hole, above-mentioned angle by the spanner embedding hole (23c) on the head (23a) that is formed at this bolt (23).
3. the pump drive of a motor, the pump drive of this motor use the valve that is supported on the engine main body (11) with camshaft (20) pump shaft (32) that is installed on the pump (21) on the engine main body (11) to be driven, it is characterized in that,
On an end of above-mentioned camshaft (20), use and run through impulse rotor (22) and the bolt (23) that screws tight on this camshaft (20) fixes this impulse rotor (22), go up at this bolt (23) with the opposed above-mentioned pump shaft of this bolt (23) (32) and form chimeric mutually and embedding part (23c, 32a) can transmitting torque.
4. the pump drive of motor according to claim 3 is characterized in that,
The hole, angle (23c) of the chimeric usefulness of spanner that the embedding part utilization of above-mentioned bolt (23) side is formed at the head (23a) of this bolt (23) constitutes; The angle axial region (32a) that the embedding part utilization of above-mentioned pump shaft (32) side is formed at an end of this pump shaft (32) constitutes.
5. according to the pump drive of claim 3 or 4 described motors, it is characterized in that,
The screw spindle part (23b) that is combined on the above-mentioned camshaft (20) of above-mentioned bolt (23) is formed, and the load of said pump (21) act as the moment of torsion of tightening direction to this bolt (23) when above-mentioned camshaft (20) rotates.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006149613 | 2006-05-30 | ||
| JP2006149614 | 2006-05-30 | ||
| JP2006149613A JP4845595B2 (en) | 2006-05-30 | 2006-05-30 | Pump drive system in engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101082292A true CN101082292A (en) | 2007-12-05 |
| CN100552193C CN100552193C (en) | 2009-10-21 |
Family
ID=38854626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710105511XA Expired - Fee Related CN100552193C (en) | 2006-05-30 | 2007-05-24 | The pump drive of motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4845595B2 (en) |
| CN (1) | CN100552193C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692092A (en) * | 2020-05-25 | 2020-09-22 | 温州市格东机械有限公司 | Cam rotor pump |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5877976B2 (en) * | 2011-08-31 | 2016-03-08 | 株式会社ショーワ | Vane pump |
| JP5498472B2 (en) * | 2011-11-25 | 2014-05-21 | 本田技研工業株式会社 | Signal rotor |
| JP6135225B2 (en) * | 2013-03-21 | 2017-05-31 | 株式会社ジェイテクト | pump |
| JP2021099046A (en) * | 2019-12-20 | 2021-07-01 | 住友電工焼結合金株式会社 | Pump structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03134280A (en) * | 1989-10-20 | 1991-06-07 | Mitsubishi Motors Corp | Oil pump for vehicle |
| JP3120305B2 (en) * | 1992-09-30 | 2000-12-25 | 本田技研工業株式会社 | Timing pulse detector for 4-cycle engine for outboard motor |
| JP3338205B2 (en) * | 1994-10-03 | 2002-10-28 | 本田技研工業株式会社 | Vertical engine and outboard motor |
| JP2005034939A (en) * | 2003-07-14 | 2005-02-10 | Hitachi Tool Engineering Ltd | Cutting edge member, tool holder and cutting tool |
-
2006
- 2006-05-30 JP JP2006149613A patent/JP4845595B2/en not_active Expired - Fee Related
-
2007
- 2007-05-24 CN CNB200710105511XA patent/CN100552193C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692092A (en) * | 2020-05-25 | 2020-09-22 | 温州市格东机械有限公司 | Cam rotor pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007321573A (en) | 2007-12-13 |
| JP4845595B2 (en) | 2011-12-28 |
| CN100552193C (en) | 2009-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4749254B2 (en) | Ship propulsion device with drive shaft | |
| CN100552193C (en) | The pump drive of motor | |
| US5876188A (en) | Oil pump arrangement for four-cycle outboard motor | |
| US7727037B2 (en) | Outboard motor | |
| JP2004285980A (en) | Water pump for cooling engine | |
| CN100503363C (en) | Outboard engine system | |
| JP4063401B2 (en) | Engine oil pump structure for outboard motors | |
| US7892054B2 (en) | Outboard motor | |
| EP1136677B1 (en) | Engine with crankshaft connected to a driving shaft | |
| US20030154811A1 (en) | Vehicle power unit | |
| JP3227227B2 (en) | Water injection propulsion device | |
| JP2001071994A (en) | Mounting structure for outboard motor | |
| US5800224A (en) | Splash and anti-cavitation plate for marine drive | |
| JP4912769B2 (en) | Ship propulsion device with drive shaft | |
| US7980218B2 (en) | Pump driving device in engine | |
| JP4749251B2 (en) | Ship propulsion device with drive shaft | |
| US7530869B2 (en) | Marine propulsion machine having drive shaft | |
| JP4563965B2 (en) | Pump drive system in engine | |
| JP4749252B2 (en) | Ship propulsion device with drive shaft | |
| JP4749253B2 (en) | Ship propulsion device with drive shaft | |
| CN203358858U (en) | 40-horsepower electro-jetting outboard machine | |
| JP2876398B2 (en) | Oil pump device for 4-cycle engine in outboard motor | |
| US7507129B2 (en) | Marine propulsion machine having drive shaft | |
| JP2007309234A (en) | Lubricating device for internal combustion engine | |
| JP3356000B2 (en) | Outboard motor crankshaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20200524 |