CN207539026U - Boost pump - Google Patents
Boost pump Download PDFInfo
- Publication number
- CN207539026U CN207539026U CN201721345023.1U CN201721345023U CN207539026U CN 207539026 U CN207539026 U CN 207539026U CN 201721345023 U CN201721345023 U CN 201721345023U CN 207539026 U CN207539026 U CN 207539026U
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- China
- Prior art keywords
- stator
- arch block
- variable ring
- pump
- ring
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a kind of boost pump, belongs to field of mechanical technique.It solves the problems such as existing power-assisted pump configuration is unfavorable for the long-time service of boost pump.This boost pump, including the pump housing, mandrel is equipped on the pump housing, the rotor in pump chamber is fixed on mandrel, the stator in pump chamber is arranged with outside rotor, blade is provided between rotor and stator, variable ring is fixed in pump chamber, variable ring set is located at outside stator, rotational pin is connected between variable ring and stator, stator can swing around rotational pin in variable ring, the right side of the pump housing is fixed with across variable ring and the spring that is resisted against on stator right side, there is the arch block one of protrusion on the inner surface of variable ring left side, there is the arch block two of protrusion on the inner surface of variable ring right side, the outer surface of stator left side can be resisted against on arch block one, the outer surface of stator right side can be resisted against on arch block two.This boost pump is conducive to be used for a long time.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of boost pump.
Background technology
Boost pump is used for automobile steering system, is the power source of motor turning, also known as power steering oil pump, including belt
The engine shaft of wheel, mandrel, oil distribution casing, stator, rotor, blade and flow valve etc., belt pulley and automobile or other power
Shaft connects.For automobile in practical driving conditions, speed is higher, and it is smaller to turn to used power, in straight trip completely without
Power steering.If with the power steering oil pump of fixed displacement, speed increases, and the oil mass of oil pump discharge increases, but practical automobile is not
So heavy wool is needed, extra oil can only flow back to fuel tank by way of overflow.And oily more, the energy consumption needed of oil pump discharge
It is bigger, thus cause very big energy loss.In order to reduce generated in the power steering oil pump course of work it is unnecessary
Energy consumption, engineers have invented the power steering oil pump of variable displacement, also known as variable pump.
Chinese patent literature data, which discloses, proposes a kind of variable pump [application number：02141443.2；Notification number：
1219977C], including：The cam ring being swingably carried between the tablet of both sides；Along one swaying direction shape of cam ring
Into the first fluid pressure chamber；The second liquid pressure chamber set along another swaying direction of cam ring；For direction
First fluid pressure chamber pushes the pressing device of cam ring, which is arranged on the side of second liquid pressure chamber
On；The rotor being eccentrically arranged in inside cam ring, the rotor have multiple blades on its excircle；It is arranged on for from pump
The dip hatch at the middle part of the apocenosis passage of the highly pressurised liquid of middle discharge；And control valve, the control valve by dip hatch upstream side with
Pressure differential activates between downstream side, wherein, at least one interior fluid pressure passes through control in the first and second fluid pressure chambers
The actuating of valve processed and be controlled, with oscillating cam ring；First fluid pressure chamber is connected on control valve, to control the first liquid
The indoor fluid pressure of body pressure chamber；The blocking of second liquid pressure chamber and control valve is opened, and at any time with pump
Suction side is connected；And the internal pressure inside cam ring is applied on a swaying direction of cam ring.
When speed is not high, the rotating speed of shaft is relatively low, and pressing device, which pushes cam ring, makes cam ring towards the first liquid pressure
Power chamber, at this moment the eccentricity of cam ring and rotor is larger, and the oil mass that variable pump pumps out is more.When speed increases, shaft
Rotating speed increases, and the centrifugal force increase that rotor generates, blade is acted on by centrifugal force pushes cam ring to make cam ring that pushing be overcome to fill
The pushing force put and moved to second liquid pressure chamber, at this moment the eccentricity of cam ring and rotor reduces, what variable pump pumped out
Oil mass is reduced.Speed is higher in this way, and the oil mass that variable pump pumps out is fewer, has saved energy consumption.Due to being pasted on cam ring with engaging ring
The outer surface leaned on is convex, and it is concave panel to engage the inner surface to recline on ring with cam ring, therefore when cam ring is with engaging
When ring reclines, cam ring is big with engaging the contact surface area between ring, cam ring during cam ring is swung in engagement ring
Outer surface and the inner surface for engaging ring between can generate the fretting wear of larger area, make so as to be unfavorable for the long-term of boost pump
With.
Invention content
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of boost pump, solution
Technical problem is how to be conducive to the long-time service of boost pump.
The purpose of this utility model can be realized by following technical proposal：
Boost pump, the pump housing including being provided with pump chamber are equipped with mandrel on the pump housing, are arranged and fix on the mandrel
Have the rotor in the pump chamber, be arranged with the tubular stator in pump chamber outside the rotor, the rotor and stator it
Between be provided with the blade that can be slided on rotor, variable ring is fixed in the pump chamber, the variable ring set is located at outside stator,
Rotational pin is connected between the variable ring and stator, the stator can swing around rotational pin in variable ring, institute
The right side for stating the pump housing is fixed with across variable ring and the spring that is resisted against on stator right side, which is characterized in that the variable
On the inner surface of ring left side there is the arch block one of protrusion, there is the arch of protrusion on the inner surface of the variable ring right side
Block two, the outer surface of the stator left side can be resisted against on arch block one, and the outer surface of the stator right side can be supported
It leans against on arch block two.
During power-assisted air pump inoperative, the outer surface of stator left side is resisted against on arch block one under the action of the spring, at this moment
The eccentricity of cam ring and rotor is maximum.When power-assisted pump work but not high speed, the rotating speed of shaft is relatively low, the diameter that stator is subject to
It is less than thrust of the spring to stator to power, the outer surface of stator left side is still resisted against arch block one under the action of the spring
On, the eccentricity of cam ring and rotor is maximum, and the oil mass that boost pump pumps out is most.When speed gradually rises, the rotating speed of shaft
It gradually rises, after the radial load that stator is subject to is more than spring to the thrust of stator, stator overcomes the elastic force effect of spring to transport to the right
Dynamic, at this moment the eccentricity of stator and rotor is gradually reduced, and the oil mass that variable pump pumps out gradually decreases.When the appearance of stator right side
Face is resisted against on arch block two, and at this moment the eccentricity of stator and rotor is minimum, and the oil mass that boost pump pumps out is minimum.When speed reduces
When, spring drives stator to left movement again, and the eccentricity of stator and rotor gradually increases, and the oil mass that variable pump pumps out gradually increases
It is more.Speed is higher in this way, and the oil mass that variable pump pumps out is fewer, has saved energy consumption.
Due to setting the arch block one of protrusion, the inner surface in variable ring right side on the inner surface of variable ring left side
The arch block two of upper setting protrusion, stator can be resisted against after turning left on arch block one, and stator can support after turning right
Lean against on arch block two, when the setting of arch block one and arch block two makes the stator be swung in variable ring with variable ring inner surface
Contact surface area reduces, make stator swung in variable ring during shape between the outer surface of stator and the inner surface of variable ring
Into the fretting wear compared with small area, be conducive to the long-time service of boost pump.
In above-mentioned boost pump, perforation is provided on the right side of the variable ring, the spring passes through perforation, becoming
The arch block one and perforation are oppositely arranged on amount ring.Stator can be made to be resisted against uniform force when on arch block one in this way, had
Conducive to the long-time service of boost pump.
In above-mentioned boost pump, the side on the inner surface of the variable ring right side positioned at arch block two is additionally provided with
The arch block three of protrusion forms groove between the arch block two and arch block three, the outer surface of the stator right side can
It is resisted against on arch block three.In this way setting stator can be made to be resisted against when on arch block two stress is more uniform, be conducive to boost pump
Long-time service.
In above-mentioned boost pump, there is the arch block four of protrusion, the arch on the inner surface of the variable ring following side
The top of shape block four is provided with rolling groove one, and the rotational pin is mounted in rolling groove one, the outer surface of the stator following side
On be provided with rolling groove two, the inner surface of the upper lateral part protrusion arch block four of the rotational pin is simultaneously embedded into rolling groove two, institute
Stating has gap between the inner surface of arch block four and the outer surface of stator following side.
Rotational pin be mounted on rolling groove one and rolling groove two in, prevent stator swung in variable ring during rotational pin
Position change, so as to be conducive to the long-time service of boost pump.And the setting in gap can ensure stator in variable ring
During swing, fretting wear will not be generated between the inner surface of arch block four and the outer surface of stator following side, is conducive to
The long-time service of boost pump.
In above-mentioned boost pump, there is the arch block five of protrusion, the arch on the inner surface of the variable ring upper lateral part
Fixing groove is provided on shape block five, sealing strip one and sealing strip two, the section of the sealing strip one are fixed in the fixing groove
Rounded or oval and sealing strip one is sticked on the bottom surface of fixing groove, and a part for the sealing strip two is located at fixing groove
Interior and stick on sealing strip one, the inner surface of another part protrusion arch block five of the sealing strip two is simultaneously sticked on stator
On the outer surface of side.
Set the section of two sealing strips and the sealing strip one on the inside of fixing groove rounded or oval, Ke Yi
Stator preferably carries out the deformation of adaptability during swinging, sealing strip two is enable to stick on the outer of stator upper lateral part always
On surface, so as to form preferable sealing, be conducive to the long-time service of boost pump.
There is annular space in a ring in above-mentioned boost pump, between the lateral surface of the spring and the wall surface of the hole of perforation.
The setting of annular space can prevent spring from rubbing during flexible with the wall surface of the hole of perforation, so as to be conducive to boost pump
It is used for a long time.
Compared with prior art, the utility model has the following advantages：
The arch block one of protrusion and arch block two on the inner surface of variable ring are set, make what stator was swung in variable ring
It can be resisted against on arch block one and arch block two in the process, reduce stator outer surface and variable ring inner surface when stator is swung
Between fretting wear area, so as to be conducive to the long-time service of boost pump.Perforation is oppositely arranged with arch block one, in arch
Arch block three is provided on the side of block two, stator is made to be resisted against stress when on arch block one and arch block two more uniform, favorably
In the long-time service of boost pump.Rotational pin is installed by rolling groove one and rolling groove two, and the outer surface of stator following side with
Gap is set between the inner surface of arch block four；Fixing groove on variable ring upper lateral part is set, and sealing is installed in fixing groove
Item one and sealing strip two, and the section of sealing strip one is rounded or oval, is conducive to the long-time service of boost pump.
Description of the drawings
Fig. 1 be this boost pump to left swing when sectional view；
Fig. 2 is sectional view when this boost pump is put to the right；
Fig. 3 is the enlarged drawing at arch block five in Fig. 1；
Fig. 4 is the enlarged drawing at rotational pin in Fig. 1.
In figure, 1, the pump housing；1a, pump chamber；2nd, mandrel；3rd, rotor；4th, blade；5th, stator；5a, rolling groove two；6th, variable ring；
6a, arch block one；6b, arch block two；6c, arch block three；6d, arch block four；6e, arch block five；6f, perforation；6g, groove；
6h, rolling groove one；6i, gap；6j, fixing groove；7th, sealing strip one；8th, sealing strip two；9th, rotational pin；10th, spring；10a, ring
Gap；11st, side cover.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
Embodiment one
As shown in Figs 1-4, boost pump including the pump housing 1, is provided with pump chamber 1a, is equipped on the pump housing 1 across pump on the pump housing 1
The mandrel 2 of chamber 1a.It is arranged on mandrel 2 and is fixed with the rotor 3 in pump chamber 1a, be arranged in pump chamber 1a outside rotor 3
Tubular stator 5, the blade 4 that can be slided on rotor 3 is provided between rotor 3 and stator 5.The lateral surface of rotor 3
On radially offer sliding slot, sliding slot has multiple and along the peripheral distribution of rotor 3, and blade 4 is inserted into sliding slot and can be in cunning
It is slided in slot, the outer end of blade 4 can be resisted against on the inner surface of stator 5.Variable ring 6,6 sets of variable ring are fixed in pump chamber 1a
It is located at outside stator 5, rotational pin 9 is connected between variable ring 6 and stator 5, stator 5 can be left in variable ring 6 around rotational pin 9
Right swing.On the inner surface of 6 following side of variable ring there is four 6d of arch block of protrusion, rolling is provided at the top of four 6d of arch block
One 6h of slot, rotational pin 9 are mounted in rolling groove.Two 5a of rolling groove is provided on the outer surface of 5 following side of stator, rotational pin 9
The inner surface of four 6d of upper lateral part protrusion arch block is simultaneously embedded into two 5a of rolling groove, under the inner surface of four 6d of arch block and stator 5
There is gap 6i between the outer surface of side.
The right side of the pump housing 1 is fixedly connected with side cover 11, and perforation 6f is provided on the right side of variable ring 6, and spring 10 is worn
Perforation 6f is crossed, and the both ends of spring 10 are born against on the right side of stator 5 and side cover 11, the lateral surface of spring 10 and perforation
There is annular space 10a in a ring between the wall surface of the hole of 6f.There is the arch block one of protrusion on the inner surface of 6 left side of variable ring
6a, one 6a of arch block and perforation 6f are oppositely arranged on variable ring 6, and the outer surface of 5 left side of stator can be resisted against arch block
On one 6a.There is two 6b of arch block of protrusion, the inner surface of 6 right side of variable ring is upper on the inner surface of 6 right side of variable ring
In the side of two 6b of arch block also there is three 6c of arch block of protrusion, groove is formed between three 6c of two 6b of arch block and arch block
6g, the outer surface of 5 right side of stator can be resisted against simultaneously on three 6c of two 6b of arch block and arch block.6 upper lateral part of variable ring
On inner surface there is five 6e of arch block of protrusion, be provided with fixing groove 6j on five 6e of arch block, sealing is fixed in fixing groove 6j
Item 1 and sealing strip 28.The section of sealing strip 1 is rounded or oval and sealing strip 1 sticks on the bottom of fixing groove 6j
On face, a part for sealing strip 28 is located in fixing groove 6j and sticks on sealing strip 1, and another part of sealing strip 28 is convex
Go out the inner surface of five 6e of arch block and stick on the outer surface of 5 upper lateral part of stator.
During power-assisted air pump inoperative, the outer surface of 5 left side of stator is resisted against on one 6a of arch block under the action of spring 10,
At this moment the eccentricity of cam ring and rotor 3 is maximum.When power-assisted pump work but not high speed, the rotating speed of shaft is relatively low, stator 5 by
The radial load arrived is less than spring 10 to the thrust of stator 5, under the action of spring 10 outer surface of 5 left side of stator still against
On one 6a of arch block, the eccentricity of cam ring and rotor 3 is maximum at this time, and the oil mass that boost pump pumps out is most.When speed is gradual
During raising, the rotating speed of shaft gradually rises, after the radial load that stator 5 is subject to is more than spring 10 to the thrust of stator 5,5 grams of stator
The elastic force effect for taking spring 10 is swung to the right, and at this moment stator 5 and the eccentricity of rotor 3 are gradually reduced, the oil mass that variable pump pumps out
Also it gradually decreases.When the outer surface of 5 right side of stator is resisted against on three 6c of two 6b of arch block and arch block, at this moment stator 5 is with turning
The eccentricity of son 3 is minimum, and the oil mass that boost pump pumps out is minimum.Later when speed reduces, spring 10 drives stator 5 to the left again
Movement, stator 5 and the eccentricity of rotor 3 gradually increase, and the oil mass that variable pump pumps out gradually increases again.Speed is higher in this way, becomes
It is fewer to measure the oil mass pumped out, has saved energy consumption.
Due to setting one 6a of arch block on the inner surface of 6 left side of variable ring, on the inner surface of 6 right side of variable ring
Two 6b and three 6c of arch block of arch block is set, and stator 5 can be resisted against after turning left on one 6a of arch block, and stator 5 is turned right
It can be resisted against on three 6c of two 6b of arch block and arch block after dynamic, the setting of two 6b of one 6a of arch block and arch block makes stator 5 exist
Reduce when swinging in variable ring 6 with the contact surface area of 6 inner surface of variable ring, make during stator 5 swings in variable ring 6
The fretting wear compared with small area is formed between the outer surface of stator 5 and the inner surface of variable ring 6, being conducive to the long-term of boost pump makes
With.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (6)
1. boost pump, the pump housing (1) including being provided with pump chamber (1a) is equipped with mandrel (2), the mandrel on the pump housing (1)
(2) it is arranged on and is fixed with the rotor (3) in pump chamber (1a), be arranged in pump chamber (1a) outside the rotor (3)
Tubular stator (5) is provided with the blade (4) that can be slided on rotor (3), institute between the rotor (3) and stator (5)
It states in pump chamber (1a) and is fixed with variable ring (6), the variable ring (6) is set in stator (5) outside, the variable ring (6) and stator
(5) rotational pin (9) is connected between, the stator (5) can swing around rotational pin (9) in variable ring (6), described
The right side of the pump housing (1) is fixed with across variable ring (6) and the spring (10) that is resisted against on stator (5) right side, and feature exists
In, there is the arch block one (6a) protruded on the inner surface of variable ring (6) left side, variable ring (6) right side
There is the arch block two (6b) of protrusion, the outer surface of stator (5) left side can be resisted against arch block one on inner surface
On (6a), the outer surface of stator (5) right side can be resisted against on arch block two (6b).
2. boost pump according to claim 1, which is characterized in that be provided with perforation on the right side of the variable ring (6)
(6f), the spring (10) is across perforation (6f), and the arch block one (6a) and perforation (6f) are with respect to setting on variable ring (6)
It puts.
3. boost pump according to claim 1, which is characterized in that be located on the inner surface of variable ring (6) right side
The side of arch block two (6b) is additionally provided with the arch block three (6c) of protrusion, the arch block two (6b) and arch block three (6c) it
Between formed groove (6g), the outer surface of stator (5) right side can be resisted against on arch block three (6c).
4. according to any boost pumps of claim 1-3, which is characterized in that the inner surface of variable ring (6) following side
It is upper that there is the arch block four (6d) protruded, it is provided with rolling groove one (6h), the rotational pin at the top of the arch block four (6d)
(9) in the rolling groove one (6h), it is provided with rolling groove two (5a) on the outer surface of stator (5) following side, described turn
The inner surface of the upper lateral part protrusion arch block four (6d) of dynamic pin (9) is simultaneously embedded into rolling groove two (5a), the arch block four
There is gap (6i) between the outer surface of inner surface and stator (5) following side of (6d).
5. according to any boost pumps of claim 1-3, which is characterized in that the inner surface of variable ring (6) upper lateral part
It is upper that there is the arch block five (6e) protruded, fixing groove (6j) is provided on the arch block five (6e), the fixing groove (6j) is interior
It is fixed with sealing strip one (7) and sealing strip two (8), the section of the sealing strip one (7) is rounded or oval and sealing strip
One (7) are sticked on the bottom surface of fixing groove (6j), and a part for the sealing strip two (8) is located in fixing groove (6j) and sticks on
On sealing strip one (7), the inner surface of another part protrusion arch block five (6e) of the sealing strip two (8) simultaneously sticks on stator
(5) on the outer surface of upper lateral part.
6. boost pump according to claim 2, which is characterized in that the lateral surface of the spring (10) and the hole of perforation (6f)
There is annular space (10a) in a ring between wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721345023.1U CN207539026U (en) | 2017-10-18 | 2017-10-18 | Boost pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721345023.1U CN207539026U (en) | 2017-10-18 | 2017-10-18 | Boost pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207539026U true CN207539026U (en) | 2018-06-26 |
Family
ID=62610727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721345023.1U Expired - Fee Related CN207539026U (en) | 2017-10-18 | 2017-10-18 | Boost pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207539026U (en) |
-
2017
- 2017-10-18 CN CN201721345023.1U patent/CN207539026U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180626 Termination date: 20191018 |