CN208651161U - A kind of gear driving vacuum pump for engine interior - Google Patents
A kind of gear driving vacuum pump for engine interior Download PDFInfo
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- CN208651161U CN208651161U CN201820291671.1U CN201820291671U CN208651161U CN 208651161 U CN208651161 U CN 208651161U CN 201820291671 U CN201820291671 U CN 201820291671U CN 208651161 U CN208651161 U CN 208651161U
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- elongated end
- oil
- pump housing
- blade
- vacuum pump
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Abstract
The utility model relates to a kind of gears for engine interior to drive vacuum pump, including the pump housing (1), (1) is provided with rotor (2) in the pump housing, it is characterized by: in the circumferential direction of the rotor (2), close to the opening portion of each blade groove (21), and the two sides for being located at blade (3) are provided with the oblique rib (6) of inner conical；Each blade (3) outboard end (31) is shaped to parabolic type, and this parabola shaped meets equation: y=ax2+ bx+c, wherein ︱ a ︱=N ︱ b ︱, ︱ b ︱=M ︱ c ︱, and meet N < M；The oil liquid volume that structure is simple, abrasion is small, work efficiency is high, the rotation of each blade was scraped improves, while oil liquid reflux may be implemented, and oil liquid utilization rate is high, reduces use cost.
Description
Technical field
The utility model relates to a kind of vacuum pumps more particularly to a kind of gear for engine interior to drive vacuum pump.
Background technique
Vehicle-mounted vacuum pump is the power source of diesel vehicle hydraulic brake booster mostly, because of gasoline-powered vehicle
Spark ignition type is used due to engine, thus in inlet manifold can produce higher vacuum pressure, can be vacuum servo system
Dynamic system provides enough vacuum sources, and for the vehicle of diesel engine drives, since engine is using compression-ignited, in this way
The vacuum pressure of phase same level cannot be provided at inlet manifold, provide the vacuum pump of vacuum source so needing to install.And show
There is the oil liquid volume that the vacuum pump structure complexity in technology, serious wear, working efficiency be low, the rotation of each blade was scraped few, and
Reflowing result is poor, oil liquid excess waste, and use cost is high.
Utility model content
Technical problem to be solved by the utility model is: being directed to the deficiencies in the prior art and defect, one kind is provided
Gear for engine interior drives vacuum pump, and structure is simple, abrasion is small, work efficiency is high, the rotation of each blade was scraped
Oil liquid volume improves, while oil liquid reflux may be implemented, and oil liquid utilization rate is high, reduces use cost.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of gear for engine interior drives
Dynamic vacuum pump, including the pump housing (1), (1) is provided with rotor (2) in the pump housing, offers three blade grooves (21) on rotor (2), and three
Blade groove (21) is evenly distributed on the circumferential direction of rotor (2), and mutually sets in 60 degree of angles between adjacent two blade grooves (21)
It sets, is both provided with blade (3) inside three blade grooves (21), be provided on the pump housing (1) and be molded as one with gear (5) are driven
Drive shaft (4), drive shaft (4) is by driving gear (5) to connect with engine power output shaft；
It is characterized by:
In the circumferential direction of the rotor (2), close to the opening portion of each blade groove (21), and it is located at blade (3)
Two sides are provided with the oblique rib (6) of inner conical；
The end (31) contacted on the outside of each blade (3) with 1 inner wall of the pump housing is shaped to parabolic type, and the parabola
Shape meets equation: y=ax2+ bx+c, wherein ︱ a ︱=N ︱ b ︱, ︱ b ︱=M ︱ c ︱, and meet N < M.
Further, compression chamber (11) are formed between the rotor (2) and the pump housing (1) inner wall, in the pump housing (1)
Side inner wall on be provided with the bleeding point (7) led to outside the pump housing.
Further, it is provided on the other side inner wall of the pump housing (1) oil-discharging cavity (8), is arranged on oil-discharging cavity (8)
Have to lead to outside the pump housing and exhausts gas and oil mouth (9).
Further, it is made of on the outside of the pump housing (1) the shell (1a) and shield (1b) that are fixed to each other, the shell
(1a) protrusion is provided with the first elongated end (1a1) positioned at upside radially, and also protrusion is set the shell (1a) radially
It is equipped with the second elongated end (1a2) of the multi-step shape positioned at downside, the shield (1b) protrude radially to be provided with and the
One elongated end (1a1), the corresponding shield elongated end (1b1) in the position the second elongated end (1a2), shield elongated end (1b1) and the
The inner side step face of two elongated ends (1a2) and the first elongated end (1a1) are engaged by clamping, and shield elongated end (1b1) is in radial direction
On development length less than the first elongated end (1a1), the second elongated end (1a2) development length in the radial direction.
Further, second elongated end (1a2) is by being located at the installation elongated end (1a21) of inside and positioned at outside
Elongated end (1a22) composition is processed, the shield elongated end (1b1) development length in the radial direction is less than processing elongated end
(1a22) development length in the radial direction, and the shield elongated end (1b1) development length in the radial direction is greater than installation and extends
Hold (1a21) development length in the radial direction.
Further, the oil-discharging cavity (8) is set as lobed, and the arc-shaped and pump housing (1) inner wall of its two sides and turns
The periphery circular arc of sub (2) matches, and the oil-discharging cavity (9) is set in the axial direction between rotor (2) and shell (1a).
Further, it is additionally provided with shell handle (1c) on the shell (1a), offers V-shaped on shell handle (1c)
Oil-feed tank (1c1) and L-shaped weight loss groove (1c2), the weight loss groove (1c2) is set to the inside of the oil-feed tank (1c1),
One end of the oil-feed tank (1c1) is additionally provided with the oil inlet (1c11) for leading to pump body, in the L of the weight loss groove (1c2)
Mounting hole (1c3) is additionally provided between shape opening and the V-arrangement apex angle of the oil-feed tank (1c1).
Further, in the oil-feed tank (1c1) in the shell handle (1c), and it is located at oil inlet (1c11) and nearby also sets
It is equipped with steel ball (1d).
Further, the diameter of the steel ball (1d) is greater than the diameter of oil inlet (1c11) and is slightly larger than oil-feed tank (1c1)
Diameter.
The beneficial effects of the utility model are:
(1) in the circumferential direction of rotor, close to the opening portion of each blade groove, and the two sides for being located at blade are provided with inner conical
Oblique rib, be conducive to rotor rotate when, blade because centrifugal action thrown away from blade groove, so that leaf will be surprisingly mixed into
Oil liquid in film trap is taken advantage of a situation discharge, simultaneously because using the oblique rib of inner conical, moreover it is possible to effectively prevent blade groove opening portion
Oil liquid flows back into inside blade groove again, in addition, the also opposite oil liquid expanded between adjacent blades of the oblique rib of inner conical
Volume improves vacuum efficiency so that the oil liquid volume that blade rotates carrying every time increases；
(2) each blade outboard end shape is set as parabolic type, and middle use is arc-shaped compared with the existing technology,
On the basis of guaranteeing good contact and seamlessly transitting, the gap increased effectively between blade outboard end and pump housing inner wall holds
Product, so that the oil liquid volume being filled into crevice volume increases, so that blade rotates the oil liquid volume of carrying every time
Increase, improves vacuum efficiency.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of the structure left view of the gear driving vacuum pump for engine interior of the utility model；
Fig. 2 is a kind of vertical cross-sectional of the belt driving vacuum pump for external engine of the utility model；
Fig. 3 is a kind of structure right view of the belt driving vacuum pump for external engine of the utility model；
In figure: the 1--- pump housing, 11--- compression chamber, 1a--- shell, 1b--- shield, the first elongated end of 1a1---, 1a2---
Second elongated end, 1a21--- installation elongated end, 1a22--- process elongated end, 1b1--- shield elongated end, 1c--- shell handle
Hand, 1c1--- oil-feed tank, 1c2--- lautertuns, 1c11--- oil inlet, 1c3--- mounting hole, 1d--- steel ball, 2--- rotor,
21--- blade groove, 3--- blade, 31--- outboard end, 4--- drive shaft, 5--- drive gear, the oblique rib of 6---, 7---
Bleeding point, 8--- oil-discharging cavity, 9--- exhaust gas and oil mouth.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
As shown in Figure 1-3, a kind of gear for engine interior drives vacuum pump, including the pump housing 1,1 setting in the pump housing
There is rotor 2, three blade grooves 21 are offered on rotor 2, three blade grooves 21 are evenly distributed on the circumferential direction of rotor 2, and adjacent two
Mutually it is arranged in 60 degree angles between blade groove 21, is both provided with blade 3 inside three blade grooves 21, leaf when facilitating rotation
Piece 3 can uniformly be thrown away blade groove 21 because of centrifugal action, while be conducive to processing and manufacturing, be provided on the pump housing 1 and sliding tooth
The drive shaft 4 that wheel 5 is molded as one, drive shaft 4 is by driving gear 5 to connect with engine power output shaft, to pass through hair
Motivation rotation drives driving gear 5 and drive shaft 4 to rotate, and then rotor 2 is driven to act；
In the circumferential direction of rotor 2, close to the opening portion of each blade groove 21, and the two sides for being located at blade 3 are provided with inner cone
The oblique rib 6 of shape, when rotor rotates, blade is because centrifugal action is thrown away from blade groove, so that blade groove will be surprisingly mixed into
In oil liquid take advantage of a situation discharge, simultaneously because using the oblique rib of inner conical, moreover it is possible to effectively prevent the oil liquid of blade groove opening portion
It flows back into inside blade groove again, in addition, the also opposite oil liquid volume expanded between adjacent blades of the oblique rib of inner conical,
So that the oil liquid volume that blade rotates carrying every time increases, vacuum efficiency is improved；As a further preference, the two sides of blade 3
The oblique rib 6 of the inner conical of setting is between each other in 150 to the angle between 180 degree.
The end 31 that each 3 outside of blade is contacted with pump housing inner wall is shaped to parabolic type, compared with the existing technology
Middle use it is arc-shaped, on the basis of guaranteeing good contact and seamlessly transitting, increase effectively blade outboard end and the pump housing
Crevice volume between inner wall, so that the oil liquid volume being filled into crevice volume increases, so that blade revolves every time
Turn the oil liquid volume carried to increase, improves vacuum efficiency；
And this parabola shaped meets equation: y=ax2+ bx+c, wherein ︱ a ︱=N ︱ b ︱, ︱ b ︱=M ︱ c ︱, and meet N < M, according to
Parabolical linear feature is it is found that ︱ a ︱ is bigger, and parabola opening is smaller, thus between blade outboard end and pump housing inner wall
Crevice volume is smaller, but ︱ a ︱ is bigger, and the contact area between blade outboard end and pump housing inner wall is also smaller, good contact
Performance and smooth transition performance cannot be guaranteed, by test of many times the result shows that, when it meets ︱ a ︱=N ︱ b ︱, ︱ b ︱=M ︱
C ︱, and when meeting N < M, effect reaches best.
Specifically, compression chamber 11 is formed between 1 inner wall of rotor 2 and the pump housing, is provided with and is led on the side inner wall of the pump housing 1
Bleeding point 7 outside the pump housing is provided with oil-discharging cavity 8 on the other side inner wall of the pump housing 1, is provided on oil-discharging cavity 8 and leads to pump
Mouth 9 is exhausted gas and oil outside body, in 2 rotary course of rotor, is mixed in remaining air and oil liquid in 1 compression chamber 11 of the pump housing
On the one hand the air entered is extracted out through bleeding point 7, the gas not exhausted is on the other hand then by exhausting gas and oil the discharge of mouth 9.
Specifically, 1 outside of the pump housing is made of the shell 1a and shield 1b that are fixed to each other, and shell 1a protrudes setting radially
There is the first elongated end 1a1 positioned at upside, also protrusion is provided with the of the multi-step shape positioned at downside to shell 1a radially
Two elongated end 1a2, to meet the needs of installation and the machining positioning of different height and position, shield 1b protrudes radially
Be provided with shield elongated end 1b1 corresponding with the first elongated end 1a1, the second position elongated end 1a2, shield elongated end 1b1 with
The inner side step face of second elongated end 1a2 and the first elongated end 1a1 are engaged by clamping, and shield elongated end 1b1 is in the radial direction
Development length is less than the first elongated end 1a1, the second elongated end 1a2 development length in the radial direction, to guarantee the effect connected and fixed
Fruit.
Specifically, the second elongated end 1a2 is by being located at the installation elongated end 1a21 of inside and positioned at the processing elongated end in outside
1a22 composition, shield elongated end 1b1 development length in the radial direction are less than processing elongated end 1a22 development length in the radial direction,
And shield elongated end 1b1 development length in the radial direction is greater than installation elongated end 1a21 development length in the radial direction, so that by force
Spending relatively low shield 1b can connect and fix on the installation elongated end 1a21 of the relatively high shell 1a of intensity, to improve
Fixed effect guarantees that clamping is secured；Machine is clamped and is positioned by processing elongated end 1a22 realization when facilitating processing simultaneously.
Specifically, oil-discharging cavity 8 is set as lobed, and the periphery of 1 inner wall of the arc-shaped and pump housing of its two sides and rotor 2 circle
Arc matches, and oil-discharging cavity 8 is set in the axial direction between rotor 2 and shell 1a, is guaranteeing contact good, smooth transition and sufficiently
While scraping effect, so that the oil-discharging cavity 8 that the oil liquid scraped is set up by axis exhausts gas and oil the discharge of mouth 9.
Specifically, it is additionally provided with shell handle 1c on shell 1a, the oil-feed tank 1c1 of V-shaped is offered on shell handle 1c
It is set to the inside of oil-feed tank 1c1 with the weight loss groove 1c2 of L-shaped, weight loss groove 1c2, one end of oil-feed tank 1c1, which is additionally provided with, to be led to
The oil inlet 1c11 of pump body is additionally provided with installation between the L shape opening and the V-arrangement apex angle of oil-feed tank 1c1 of weight loss groove 1c2
Hole 1c3, as a further preference, L shape opening are that circular arc is open, and mounting hole 1c3 is set to the center point of the circular arc, V-arrangement top
The angle at angle is set as 150 degree between 180 degree, after oil liquid enters the oil inlet 1c11 of one end setting of oil groove 1c1, through oil inlet
It is passed through inside the pump housing 1 after the filter device of mouth 1c11 setting, to guarantee the cleannes of oil liquid.
Specifically, in the oil-feed tank 1c1 in shell handle 1c, and it is located at oil inlet 1c11 and is nearby additionally provided with steel ball 1d.
Specifically, diameter of the diameter of steel ball 1d greater than oil inlet 1c11 and the diameter slightly larger than oil-feed tank 1c1, oil-feed tank
For 1c1 after machining, remaining can block oil inlet after having the channel outside connection, setting steel ball to enter oil-feed tank 1c1
It blocks and is stuck in oil-feed tank 1c1 while 1c11, so that oil liquid be avoided to reveal.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (9)
1. a kind of gear for engine interior drives vacuum pump, including the pump housing (1), (1) is provided with rotor (2) in the pump housing,
Three blade grooves (21) are offered on rotor (2), three blade grooves (21) are evenly distributed on the circumferential direction of rotor (2), and adjacent two
Mutually in 60 degree angles settings between blade groove (21), three blade grooves (21) inside are both provided with blade (3), the pump housing (1)
On be provided with driving gear (5) drive shaft (4) that is molded as one, drive shaft (4) by driving gear (5) with start it is motor-driven
Power output shaft connection；
It is characterized by:
In the circumferential direction of the rotor (2), close to the opening portion of each blade groove (21), and it is located at the two sides of blade (3)
It is provided with the oblique rib (6) of inner conical；
The end (31) contacted on the outside of each blade (3) with pump housing inner wall is shaped to parabolic type, and this is parabola shaped full
Sufficient equation: y=ax2+ bx+c, wherein ︱ a ︱=N ︱ b ︱, ︱ b ︱=M ︱ c ︱, and meet N < M.
2. vacuum pump according to claim 1, it is characterised in that: shape between the rotor (2) and the pump housing (1) inner wall
At compression chamber (11), the bleeding point (7) led to outside the pump housing is provided on the side inner wall of the pump housing (1).
3. vacuum pump according to claim 2, it is characterised in that: be provided on the other side inner wall of the pump housing (1)
Oil-discharging cavity (8), is provided with to lead to outside the pump housing on oil-discharging cavity (8) and exhausts gas and oil mouth (9).
4. vacuum pump according to claim 3, it is characterised in that: the shell on the outside of the pump housing (1) by being fixed to each other
(1a) and shield (1b) composition, the shell (1a) protrude the first elongated end (1a1) being provided with positioned at upside, institute radially
It states shell (1a) and also protrudes the second elongated end (1a2) for being provided with the multi-step shape positioned at downside, the shield radially
(1b) protrusion is provided with shield elongated end corresponding with the first elongated end (1a1), the second elongated end position (1a2) radially
(1b1), shield elongated end (1b1) are matched with the inner side step face of the second elongated end (1a2) and the first elongated end (1a1) clamping
Close, and shield elongated end (1b1) development length in the radial direction less than the first elongated end (1a1), the second elongated end (1a2) in diameter
Upward development length.
5. vacuum pump according to claim 4, it is characterised in that: second elongated end (1a2) is by the peace positioned inside
It fills elongated end (1a21) and the processing elongated end (1a22) positioned at outside forms, the shield elongated end (1b1) is in the radial direction
Development length is less than processing elongated end (1a22) development length in the radial direction, and the shield elongated end (1b1) is radially
Development length be greater than installation elongated end (1a21) development length in the radial direction.
6. vacuum pump according to claim 5, it is characterised in that: the oil-discharging cavity (8) is set as lobed, and its two sides
The arc-shaped periphery circular arc with the pump housing (1) inner wall and rotor (2) matches, and the oil-discharging cavity (8) is set in the axial direction to be turned
Between sub (2) and shell (1a).
7. vacuum pump according to claim 4, it is characterised in that: be additionally provided with shell handle on the shell (1a)
(1c) offers the oil-feed tank (1c1) of V-shaped and the weight loss groove (1c2) of L-shaped, the weight loss groove on shell handle (1c)
(1c2) is set to the inside of the oil-feed tank (1c1), and one end of the oil-feed tank (1c1), which is additionally provided with, leads to pump body
Oil inlet (1c11) is additionally provided between the L shape opening and the V-arrangement apex angle of the oil-feed tank (1c1) of the weight loss groove (1c2)
Mounting hole (1c3).
8. vacuum pump according to claim 7, it is characterised in that: in the oil-feed tank (1c1) in the shell handle (1c),
And it is located at oil inlet (1c11) and is nearby additionally provided with steel ball (1d).
9. vacuum pump according to claim 8, it is characterised in that: the diameter of the steel ball (1d) is greater than oil inlet (1c11)
Diameter and be slightly larger than oil-feed tank (1c1) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820291671.1U CN208651161U (en) | 2018-03-02 | 2018-03-02 | A kind of gear driving vacuum pump for engine interior |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820291671.1U CN208651161U (en) | 2018-03-02 | 2018-03-02 | A kind of gear driving vacuum pump for engine interior |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208651161U true CN208651161U (en) | 2019-03-26 |
Family
ID=65773358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820291671.1U Active CN208651161U (en) | 2018-03-02 | 2018-03-02 | A kind of gear driving vacuum pump for engine interior |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208651161U (en) |
-
2018
- 2018-03-02 CN CN201820291671.1U patent/CN208651161U/en active Active
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