CN209469569U - Plunger pump for brake system of car - Google Patents
Plunger pump for brake system of car Download PDFInfo
- Publication number
- CN209469569U CN209469569U CN201920097223.2U CN201920097223U CN209469569U CN 209469569 U CN209469569 U CN 209469569U CN 201920097223 U CN201920097223 U CN 201920097223U CN 209469569 U CN209469569 U CN 209469569U
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- China
- Prior art keywords
- plunger
- wall
- pump housing
- pump
- car
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- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims description 12
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a kind of plunger pump for brake system of car, including the pump housing, oil inlet and oil outlet are provided on the side wall of the pump housing, pump body, which can slide up and down to, is equipped with plunger, the lower end of plunger stretches out in outside the pump housing, the inside of upper end is equipped with the first check valve, pump body positioned at oil outlet is equipped with second one-way valve, back pressure cavity is formed between first check valve and second one-way valve, reset spring is installed inside back pressure cavity, the both ends of reset spring offset with the first check valve and second one-way valve respectively, the channel of plunger lower end being internally provided with for being connected to oil inlet and the first check valve, pump housing inner wall above oil inlet and the first sealing structure is provided between plunger, pump housing inner wall below oil inlet and second seals structure is provided between plunger；The utility model can be brought convenience to the assembly of plunger pump, and be conducive to improve the qualification rate of plunger pump.
Description
Technical field
The utility model relates to plunger pump technique fields, and in particular to a kind of plunger pump for brake system of car.
Background technique
The development of the anti-lock braking system of automobile at home comparative maturity, and be directed to the structure of pump be also
It is various informative, but basic principle is all to form high pressure in a back pressure cavity by electrical motor driven plunger, to reach oil return
Or provide a system to high pressure.Two check valves on the market inside used plunger pump are to be connected to one by guide sleeve at present
It rises, so, there is only the disadvantages of assembly trouble, and with this structure, are difficult to realize to an individual list
It is tested to valve, to have the shortcomings that unidirectional valve test is inconvenient.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of plunger pump for brake system of car, with biography
The plunger pump of system on the market is compared, and internal the first check valve and second one-way valve are relatively independent structures, so,
It can be brought convenience to the assembly of plunger pump, and before assembling plunger pump, it can be single to the first check valve and second respectively
Individually be tested for the property to valve, thus plunger pump after the assembly is completed, be conducive to improve plunger pump qualification rate.
The plunger pump for brake system of car of the utility model, including the pump housing are provided with oil inlet on the side wall of the pump housing
Mouthful and oil outlet, pump body, which can slide up and down to, is equipped with plunger, and the lower end of plunger stretches out in outside the pump housing, upper end it is interior
Portion is equipped with the first check valve, is equipped with second one-way valve, the first check valve and the second list positioned at the pump body of oil outlet
To back pressure cavity is formed between valve, reset spring is installed inside back pressure cavity, the both ends of reset spring respectively with the first check valve and
Second one-way valve offsets, the channel of plunger lower end being internally provided with for being connected to oil inlet and the first check valve, is located at oil inlet
Be provided with the first sealing structure between the pump housing inner wall and plunger of mouthful top, the pump housing inner wall below oil inlet and plunger it
Between be provided with second seals structure.
The plunger pump for brake system of car of the utility model, wherein the first sealing structure includes interference fit ground
The retaining ring and the first star sealing ring being set in outside plunger, the inner wall interference of the outer wall and the pump housing of the first star sealing ring are matched
It closes.
The plunger pump for brake system of car of the utility model, wherein second seals structure includes interference fit ground
The second star sealing ring being set in outside plunger, the outer wall of the second star sealing ring and the inner wall of the pump housing are interference fitted.
The plunger pump for brake system of car of the utility model, wherein the column below the second star sealing ring
Portion is arranged with guide ring beyond the Great Wall, and the outer wall of guide ring and the inner wall of the pump housing are interference fitted, the inner wall of guide ring and the outer wall of plunger
Between there are gaps.
The plunger pump for brake system of car of the utility model, wherein be embedded with lip shape on the outer wall of upper end
Sealing ring, the inner wall of lip-type packing and the outer wall of plunger are interference fitted, the inner wall interference of the outer wall and the pump housing of lip-type packing
Cooperation.
The plunger pump for brake system of car of the utility model, wherein on the inner wall of the pump housing at oil inlet
It is embedded with ring strainer, the outer wall of ring strainer and the inner wall of the pump housing are interference fitted, set on the inner wall of the pump housing on the outside of ring strainer
It is equipped with annular groove.
For the utility model compared with traditional plunger pump on the market, internal the first check valve and second one-way valve are phases
To independent structure, so, can be brought convenience to the assembly of plunger pump, and before assembling plunger pump, Ke Yifen
It is other that first check valve and second one-way valve are individually tested for the property, thus plunger pump after the assembly is completed, be conducive to improve
The qualification rate of plunger pump.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the schematic cross-sectional view of the utility model；
Fig. 2 is the schematic cross-sectional view after plunger, the first check valve and lip-type packing assembly.
Specific embodiment
Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new
Type.That is, the details in these practices is non-essential in some embodiments of the utility model.In addition, for letter
For the sake of changing schema, some known usual structures and component will be painted it in the drawings in simply illustrative mode.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and non-specifically
The meaning of order or cis-position is censured, it is also non-to limit the utility model, it is retouched just for the sake of difference with same technique term
The component stated or operation are not understood to indicate or imply its relative importance or implicitly indicate indicated technology
The quantity of feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not within the protection scope of the requires of the utility model.
The plunger pump for brake system of car of the utility model, including the pump housing 1, be provided on the side wall of the pump housing 1 into
Hydraulic fluid port 11 and oil outlet 12 can slide up and down to inside the pump housing 1 and be equipped with plunger 2, and the lower end of plunger 2 stretches out in outside the pump housing 1, column
The inside for filling in 2 upper ends is equipped with the first check valve 3, and second one-way valve 4 is equipped with inside the pump housing 1 at oil outlet 12, the
Back pressure cavity 13 is formed between one check valve 3 and second one-way valve 4, and reset spring 5, reset spring 5 are installed inside back pressure cavity 13
Both ends offset respectively with the first check valve 3 and second one-way valve 4,2 lower end of plunger is internally provided with for being connected to oil inlet
11 and first check valve 3 channel 21,1 inner wall of the pump housing above oil inlet and the first sealing knot is provided between plunger 2
Structure, 1 inner wall of the pump housing below oil inlet and is provided with second seals structure between plunger 2.
First sealing structure includes the retaining ring 61 and the first star sealing ring 62 being set in being interference fitted outside plunger 2,
The outer wall of first star sealing ring 62 and the inner wall of the pump housing 1 are interference fitted；After by using this structure, in the effect of retaining ring
Under, it can be avoided the phenomenon that the first star sealing ring flange occurs or even twisted after by high pressure.
Second seals structure includes the second star sealing ring 71 being set in being interference fitted outside plunger 2, the second star
The outer wall of sealing ring 71 and the inner wall of the pump housing 1 are interference fitted.
2 outer cover of plunger positioned at 71 lower section of the second star sealing ring is equipped with guide ring 72, the outer wall and pump of guide ring 72
The inner wall of body 1 is interference fitted, and there are gaps between the inner wall of guide ring 72 and the outer wall of plunger 2；By the setting of guide ring,
When plunger is mobile, guide ring can play the role of guiding to plunger, so as to improve stability when plunger movement.
Lip-type packing 8, the outer wall interference of the inner wall and plunger 2 of lip-type packing 8 are embedded on the outer wall of 2 upper end of plunger
Cooperation, the outer wall of lip-type packing 8 and the inner wall of the pump housing 1 are interference fitted；By the setting of lip-type packing, when plunger is transported upwards
When moving so that the inside of lip-type packing is by high pressure, lip-type packing can be expanded outwardly and be offseted with the inner wall of the pump housing, in this way
One, it can be improved the sealing effect between plunger and the pump housing.
Ring strainer 9, the outer wall of ring strainer 9 and the inner wall of the pump housing 1 are embedded on the inner wall of the pump housing 1 at oil inlet 11
Interference fit is provided with annular groove 14 on the inner wall of the pump housing 1 in 9 outside of ring strainer；Pass through the setting of ring strainer, ring filter
Net can play the role of filtering in the import of pump；By the setting of annular groove, the net of oil inlet Yu ring strainer can be avoided
Throttling is formed between cloth.
When the utility model at work, when motor driven plunger moves upwards, the first closed check valve, back pressure cavity due to
The compression of oil liquid will form high pressure, at this time second one-way valve open, oil liquid can from back pressure cavity after second one-way valve from fuel-displaced
Mouth discharge, when motor eccentric cam moves downward, the reset spring in back pressure cavity can drive plunger to move downward, at this time back pressure
It will form negative pressure in chamber, the first check valve is opened, and oil liquid can add in back pressure cavity from oil inlet, and and so on movement carries out
Next circulation.
First check valve and second one-way valve employed in the utility model are by support base, steel ball, spring and plug
Four parts form, and are provided with through-hole in support base and plug；The structure of first check valve and second one-way valve is current
Routine techniques and conventional structure on the market, therefore, not repeat them here.
Upper described only the embodiments of the present invention, is not intended to limit the utility model.For this field
For technical staff, various modifications and changes may be made to the present invention.The interior institute of all spirit and principle in the utility model
Any modification, equivalent substitution, improvement and etc. of work should all include within the scope of the claims of the utility model.
Claims (6)
1. a kind of plunger pump for brake system of car, including the pump housing (1), oil inlet is provided on the side wall of the pump housing (1)
Mouth (11) and oil outlet (12), it is characterised in that: can slide up and down to inside the pump housing (1) and plunger (2), the column are installed
The lower end of plug (2) stretches out in the pump housing (1) outside, and the inside of plunger (2) upper end is equipped with the first check valve (3), is located at fuel-displaced
It is equipped with second one-way valve (4) inside the pump housing (1) at mouth (12), between first check valve (3) and second one-way valve (4)
It is formed back pressure cavity (13), is equipped with reset spring (5) inside the back pressure cavity (13), the both ends difference of the reset spring (5)
It offsets with the first check valve (3) and second one-way valve (4), plunger (2) lower end is internally provided with for being connected to oil inlet
(11) and the channel (21) of the first check valve (3) it, is provided between the pump housing (1) inner wall above oil inlet and plunger (2)
First sealing structure is provided with second seals structure between the pump housing (1) inner wall below oil inlet and plunger (2).
2. the plunger pump according to claim 1 for brake system of car, which is characterized in that first sealing structure
It is set in the external retaining ring (61) of plunger (2) including interference fit and the first star sealing ring (62), first star are close
The outer wall of seal (62) and the inner wall of the pump housing (1) are interference fitted.
3. the plunger pump according to claim 1 for brake system of car, which is characterized in that the second seals structure
The second external star sealing ring (71) of plunger (2) is set in including interference fit, the second star sealing ring (71)
Outer wall and the inner wall of the pump housing (1) are interference fitted.
4. the plunger pump according to claim 3 for brake system of car, which is characterized in that described to be located at the second star
Plunger (2) outer cover below sealing ring (71) is equipped with guide ring (72), and the outer wall of the guide ring (72) is interior with the pump housing (1)
Wall interference fit, there are gaps between the inner wall of the guide ring (72) and the outer wall of plunger (2).
5. the plunger pump according to claim 1 for brake system of car, which is characterized in that plunger (2) upper end
Outer wall on be embedded with lip-type packing (8), the outer wall of the inner wall of the lip-type packing (8) and plunger (2) is interference fitted, institute
The inner wall of the outer wall and the pump housing (1) of stating lip-type packing (8) is interference fitted.
6. the plunger pump according to claim 1 for brake system of car, which is characterized in that be located at oil inlet (11)
The pump housing (1) inner wall on be embedded with ring strainer (9), the inner wall of the outer wall of the ring strainer (9) and the pump housing (1) is interference fitted,
Annular groove (14) are provided on the inner wall of the pump housing (1) on the outside of ring strainer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920097223.2U CN209469569U (en) | 2019-01-21 | 2019-01-21 | Plunger pump for brake system of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920097223.2U CN209469569U (en) | 2019-01-21 | 2019-01-21 | Plunger pump for brake system of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209469569U true CN209469569U (en) | 2019-10-08 |
Family
ID=68092668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920097223.2U Active CN209469569U (en) | 2019-01-21 | 2019-01-21 | Plunger pump for brake system of car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209469569U (en) |
-
2019
- 2019-01-21 CN CN201920097223.2U patent/CN209469569U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |