CN210502645U - Novel ESC plunger pump structure of automotive electronics stable system - Google Patents
Novel ESC plunger pump structure of automotive electronics stable system Download PDFInfo
- Publication number
- CN210502645U CN210502645U CN201920879542.9U CN201920879542U CN210502645U CN 210502645 U CN210502645 U CN 210502645U CN 201920879542 U CN201920879542 U CN 201920879542U CN 210502645 U CN210502645 U CN 210502645U
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- plunger pump
- plunger
- sleeve
- eliminating
- inner cavity
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Abstract
The utility model discloses a novel automotive electronics stable system ESC plunger pump structure. The plunger pump comprises a plunger pump shell, a plunger pump sleeve, a plunger pump front body and a plunger pump front body, wherein the two ends of the plunger pump shell are respectively provided with a large inner cavity and a small inner cavity which are coaxially communicated with each other, the plunger pump sleeve is arranged in the large inner cavity, a first oil duct is arranged in the middle of the plunger pump sleeve, the plunger pump sleeve is connected to a step surface between the large inner cavity and the small inner cavity, the plunger pump front body is fixedly arranged in the large inner cavity, the end surface of the plunger pump front body facing the plunger pump sleeve is provided with a central blind hole; the central blind hole is internally provided with a pulse eliminating spring and a pulse eliminating plunger assembly, and the pulse eliminating spring is connected between the bottom of the central blind hole and the pulse eliminating plunger assembly; the utility model discloses reduced oil pressure pulsation in the plunger pump working process, the effectual ride comfort that improves ESC during operation has reduced ESC noise at work.
Description
Technical Field
The utility model relates to a product plunger pump technical field, specific theory relates to a novel automotive electronics stable system ESC plunger pump structure.
Background
The plunger pump of the automobile electronic stabilization system is a core component of the automobile electronic stabilization system (ESC), and is used for pumping brake fluid generated by decompression in the ABS adjusting process back to a brake master cylinder to provide power for the active pressurization of the ESC. Typically including a plunger pump precursor, a plunger pump sleeve assembly, a plunger pump plunger assembly, etc. At present, the plunger pump in the prior art structurally has a pulsation structure, the oil pressure impact at the outlet of the plunger pump in the ESC working process is too large, the working noise of an automobile electronic stability system (ESC) is large, the phenomenon of short-time locking of wheels occurs in the ESC adjusting process, the function is difficult to realize driving, and customers complain about the phenomenon.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a novel automotive electronics stable system ESC plunger pump structure, has reduced the oil pressure impact of plunger pump during operation.
The utility model discloses a realize through following technical scheme:
a plunger pump precursor, a pulse eliminating spring, a pulse eliminating plunger assembly, a plunger pump sleeve, a plunger pump plunger assembly and an eccentric bearing are arranged in the plunger pump shell; two inner cavities which are coaxially communicated with each other in a large mode and a small mode are formed in the inner portions of two ends of the shell of the plunger pump respectively, the large inner cavity is correspondingly communicated with an oil outlet formed in the shell of the plunger pump, and the small inner cavity is correspondingly communicated with an oil inlet formed in the shell of the plunger pump; a plunger pump sleeve is arranged in the large inner cavity, a first oil duct is formed in the middle of the plunger pump sleeve, the plunger pump sleeve is connected to a step surface between the large inner cavity and the small inner cavity, a plunger pump front body is fixedly arranged in the large inner cavity, a central blind hole is formed in the end surface, facing the plunger pump sleeve, of the plunger pump front body, a radial gap is formed between the plunger pump front body and the inner wall of the large inner cavity, an oil path gap is formed between the plunger pump sleeve and the plunger pump front body, and the oil path gap is communicated between the radial gap and the central blind hole; the central blind hole is internally provided with a pulse eliminating spring and a pulse eliminating plunger assembly, and the pulse eliminating spring is connected between the bottom of the central blind hole and the pulse eliminating plunger assembly; the pulse eliminating plunger component comprises a pulse eliminating plunger, a one-way valve spring and a pulse eliminating sealing steel ball; the pulse eliminating plunger is installed and connected between the pulse eliminating spring and the plunger pump sleeve, a first central installation hole is formed in the end face, close to the plunger pump sleeve, of the pulse eliminating plunger, the first central installation hole is communicated with a first oil duct of the plunger pump sleeve, a one-way valve spring and a pulse eliminating sealing steel ball are installed in the first central installation hole, the one-way valve spring is connected between the pulse eliminating sealing steel ball and the bottom of the first central installation hole, and the pulse eliminating sealing steel ball is pressed and plugged in the first oil duct of the plunger pump sleeve under the action of the one-way valve spring; a plunger pump plunger assembly is arranged in the small inner cavity, a second central mounting hole is formed in the end face, close to the plunger pump plunger assembly, of the plunger pump sleeve, the second central mounting hole of the plunger pump sleeve is communicated with a first central mounting hole of the pulse-eliminating plunger through a first oil duct, and the plunger pump plunger assembly comprises a plunger pump plunger, a plunger pump spring and a plunger pump sealing steel ball; the plunger piston is in contact connection with the eccentric bearing at the end face far away from the plunger pump sleeve, a second oil duct is arranged at the center of the end face close to the plunger pump sleeve, an annular groove is formed in the middle of the plunger piston of the plunger pump and communicated with the second oil duct, and an oil inlet is communicated to a second central mounting hole of the plunger pump sleeve after passing through the annular groove and the second oil duct; the plunger pump spring is installed and connected between the plunger pump plunger and the plunger pump sleeve, the plunger pump plunger is tightly pressed and plugged in the second oil duct of the plunger pump plunger under the action of the plunger pump spring, and the end face of the second oil duct is contacted with the excircle of the eccentric bearing.
The utility model discloses structural design the two-stage plunger subassembly for fluid only can one-way circulation, forms the plunger effect, and can reduce the oil pressure pulsation in the plunger pump working process, has improved the ride comfort, has reduced ESC noise.
The plunger pump sleeve is connected with the inner wall of the large inner cavity of the plunger pump shell through interference.
The vein eliminating spring is in clearance fit with the hole wall of the central blind hole of the plunger pump precursor.
The pulse eliminating spring is in interference fit with the pulse eliminating plunger assembly.
The pulsation eliminating plunger piston is connected with the hole wall of the central blind hole of the plunger pump precursor in a sealing mode through a sealing ring.
The plunger of the plunger pump is hermetically connected with the inner wall of the small inner cavity of the plunger pump shell through a sealing ring.
The pulse eliminating spring and the pulse eliminating plunger assembly are integrally preformed.
The utility model has the advantages that:
the utility model discloses an automotive electronics stable system (ESC) plunger pump structure, simple structure has reduced the pulsation impact of ESC adjustment in-process plunger pump, has improved ESC's noise at work, improves ESC product property ability and life.
Drawings
Fig. 1 is a cross-sectional view of a plunger pump of the present invention;
FIG. 2 is a cross-sectional view of the plunger pump pulsation damper according to the present invention;
fig. 3 is a second sectional view of the plunger pump pulsation canceling mechanism of the present invention.
In the figure: plunger pump precursor 1, one-way valve spring 2, pulse eliminating plunger assembly 3, pulse eliminating sealing ring 31 and pulse eliminating plunger 32
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings:
as shown in fig. 1, a plunger pump precursor 1, a pulse eliminating spring 2, a pulse eliminating plunger assembly 3, a plunger pump sleeve 4, a plunger pump plunger assembly 5 and an eccentric bearing 6 are arranged in a plunger pump shell; two inner cavities which are coaxially communicated with each other in a large mode and a small mode are formed in the inner portions of two ends of the shell of the plunger pump respectively, the large inner cavity is correspondingly communicated with an oil outlet formed in the shell of the plunger pump, and the small inner cavity is correspondingly communicated with an oil inlet formed in the shell of the plunger pump; a plunger pump sleeve 4 is arranged in the large inner cavity, a first oil duct is formed in the middle of the plunger pump sleeve 4, the plunger pump sleeve 4 is connected to a step surface between the large inner cavity and the small inner cavity, a plunger pump front body 1 is fixedly arranged in the large inner cavity, the plunger pump sleeve 4 is positioned between the plunger pump front body 1 and the step surface, a central blind hole is formed in the end surface, facing the plunger pump sleeve 4, of the plunger pump front body 1, a radial gap is formed between the plunger pump front body 1 and the inner wall of the large inner cavity, an oil path gap is formed between the plunger pump sleeve 4 and the plunger pump front body 1, and the oil path gap is communicated between the radial gap and the central blind hole; the vein eliminating spring 2 is in clearance fit with the hole wall of the central blind hole of the plunger pump precursor 1.
As shown in fig. 1, a vein eliminating spring 2 and a vein eliminating plunger component 3 are arranged in the central blind hole, and the vein eliminating spring 2 is connected between the bottom of the central blind hole and the vein eliminating plunger component 3; the pulse eliminating plunger component 3 comprises a pulse eliminating plunger 32, a one-way valve spring and a pulse eliminating sealing steel ball; the pulse eliminating plunger 32 is installed and connected between the pulse eliminating spring 2 and the plunger pump sleeve 4, a first center installation hole is formed in the end face, close to the plunger pump sleeve 4, of the pulse eliminating plunger 32, the first center installation hole is communicated with a first oil duct of the plunger pump sleeve 4, a check valve spring and a pulse eliminating sealing steel ball are installed in the first center installation hole, the check valve spring is connected between the pulse eliminating sealing steel ball and the bottom of the first center installation hole, and the pulse eliminating sealing steel ball is tightly pressed and plugged in the first oil duct of the plunger pump sleeve 4 under the action of the check valve spring.
As shown in fig. 1, a plunger pump plunger assembly 5 is installed in the small inner cavity, a second central installation hole is formed in the end face, close to the plunger pump plunger assembly 5, of the plunger pump sleeve 4, the second central installation hole of the plunger pump sleeve 4 is communicated with a first central installation hole of a pulse-eliminating plunger through a first oil duct, and the plunger pump plunger assembly 5 comprises a plunger pump plunger, a plunger pump spring and a plunger pump sealing steel ball; the plunger pump plunger is in contact connection with the eccentric bearing 6 at the end face far away from the plunger pump sleeve 4, a second oil duct is arranged at the center of the end face close to the plunger pump sleeve 4, an annular groove is formed in the middle of the plunger pump, the annular groove is communicated with the second oil duct, and an oil inlet is communicated to a second central mounting hole of the plunger pump sleeve 4 through the annular groove and the second oil duct; and the plunger pump spring is installed and connected between the plunger pump plunger and the plunger pump sleeve 4, and the plunger pump plunger is tightly pressed and plugged in the second oil channel of the plunger pump plunger under the action of the plunger pump spring.
As shown in fig. 2 and 3, the plunger pump sleeve 4 is connected with the inner wall of the large inner cavity of the plunger pump shell in a sealing way through a sealing ring.
As shown in fig. 3, the deglitch spring 2 and the deglitch plunger assembly 3 are interference fit. In specific implementation, a groove is formed in the end face of the pulse eliminating plunger assembly 3, a protrusion is formed at the end part of the pulse eliminating spring 2, and the protrusion of the pulse eliminating spring 2 is embedded in the groove of the pulse eliminating plunger assembly 3 in an interference fit mode.
In specific implementation, the vein-eliminating spring 2 is made of elastic material. The degaussing spring 2 and the degaussing plunger assembly may be integrally preformed.
The pulsation eliminating plunger 32 is connected with the wall of the central blind hole of the plunger pump precursor 1 in a sealing mode through a sealing ring 31. The plunger of the plunger pump is hermetically connected with the inner wall of the small inner cavity of the plunger pump shell through sealing rings, and the sealing rings are positioned on two sides of the annular groove.
The degulsing plunger component 3 divides the pump precursor 1 into a front cavity and a rear cavity.
As shown in fig. 1, an external motor drives the eccentric bearing 6 to rotate, and due to the eccentric cam structure of the eccentric bearing 6, the plunger pump plunger assembly 5 moves axially in the small inner cavity, and brake fluid flows in the direction of fig. 1, namely, the brake fluid flows in from an oil inlet, then flows into the second central mounting hole of the plunger pump sleeve 4 through the annular groove and the second oil channel, then flows into the central blind hole of the pulsation-eliminating plunger through the first oil channel of the plunger pump sleeve 4, then flows into the radial gap through the oil channel gap, and finally flows out from the oil outlet.
The brake fluid generates oil pressure which changes according to sine, when the oil pressure rises, a plunger pump sealing steel ball of the plunger pump plunger assembly 5 is pushed leftwards in the figure 1, so that a second central mounting hole of the plunger pump sleeve 4 is communicated with a second oil duct of the plunger pump plunger assembly 5; meanwhile, the pulse eliminating sealing steel ball of the pulse eliminating plunger assembly 3 is pushed leftwards in the figure 1, so that the second central mounting hole of the pulse eliminating plunger assembly 3 is communicated with the first oil channel of the plunger pump sleeve 4. The pulse-eliminating plunger assembly 3 pushes the pulse-eliminating spring 2 leftwards in the figure 1 to compress and absorb energy, so that the pulse of the output oil pressure of the plunger pump is filtered.
When the oil pressure is reduced, the pulse eliminating sealing steel ball of the pulse eliminating plunger component 3 moves rightwards to block the first oil duct of the plunger pump sleeve 4, the oil cannot flow reversely, and the output oil pressure of the plunger pump can be improved.
When the plunger pump pumps oil, the pulse eliminating plunger assembly 3 moves towards one side of the plunger pump front body 1 to compress the pulse eliminating spring 2, so that the pulse eliminating spring can absorb the pulse oil pressure of the plunger pump, and when the plunger pump absorbs oil, the oil pressure at the outlet end of the plunger pump can be improved when the one-way valve spring extends. This can reduce the pressure pulsation of the output oil pressure of the plunger pump.
Therefore, the utility model discloses can reduce oil pressure pulsation in the plunger pump working process, improve ESC ride comfort in the work effectively, reduce ESC noise at work.
The above is the embodiment of the present invention. The utility model discloses not limited to above-mentioned embodiment, anybody should learn the structural change who makes under the enlightenment of the utility model, all with the utility model discloses have the same or close technical scheme, all fall into the utility model discloses an within the protection scope.
Claims (7)
1. The utility model provides a novel automotive electronics stable system ESC plunger pump structure which characterized in that: a plunger pump front body (1), a pulse eliminating spring (2), a pulse eliminating plunger assembly (3), a plunger pump sleeve (4), a plunger pump plunger assembly (5) and an eccentric bearing (6) are arranged in the plunger pump shell; two inner cavities which are coaxially communicated with each other in a large mode and a small mode are formed in the inner portions of two ends of the shell of the plunger pump respectively, the large inner cavity is correspondingly communicated with an oil outlet formed in the shell of the plunger pump, and the small inner cavity is correspondingly communicated with an oil inlet formed in the shell of the plunger pump; a plunger pump sleeve (4) is installed in the large inner cavity, a first oil channel is formed in the middle of the plunger pump sleeve (4), the plunger pump sleeve (4) is connected to a step surface between the large inner cavity and the small inner cavity, a plunger pump precursor (1) is fixedly installed in the large inner cavity, a central blind hole is formed in the end face, facing the plunger pump sleeve (4), of the plunger pump precursor (1), a radial gap is formed between the plunger pump precursor (1) and the inner wall of the large inner cavity, an oil channel gap is formed between the plunger pump sleeve (4) and the plunger pump precursor (1), and the oil channel gap is communicated between the radial gap and the central blind hole; a pulse eliminating spring (2) and a pulse eliminating plunger component (3) are arranged in the central blind hole, and the pulse eliminating spring (2) is connected between the bottom of the central blind hole and the pulse eliminating plunger component (3); the pulse eliminating plunger component (3) comprises a pulse eliminating plunger (32), a one-way valve spring and a pulse eliminating sealing steel ball; the pulse eliminating plunger (32) is installed and connected between the pulse eliminating spring (2) and the plunger pump sleeve (4), a first center installation hole is formed in the end face, close to the plunger pump sleeve (4), of the pulse eliminating plunger (32), the first center installation hole is communicated with a first oil duct of the plunger pump sleeve (4), a one-way valve spring and a pulse eliminating sealing steel ball are installed in the first center installation hole, the one-way valve spring is connected between the pulse eliminating sealing steel ball and the bottom of the first center installation hole, and the pulse eliminating sealing steel ball is pressed and plugged in the first oil duct of the plunger pump sleeve (4) under the action of the one-way valve spring; a plunger pump plunger assembly (5) is installed in the small inner cavity, a second central installation hole is formed in the end face, close to the plunger pump plunger assembly (5), of the plunger pump sleeve (4), the second central installation hole of the plunger pump sleeve (4) is communicated to a first central installation hole of the pulse-eliminating plunger through a first oil duct, and the plunger pump plunger assembly (5) comprises a plunger pump plunger, a plunger pump spring and a plunger pump sealing steel ball; the plunger pump plunger is in contact connection with the eccentric bearing (6) at the end face far away from the plunger pump sleeve (4), a second oil duct is formed in the center of the end face, close to the plunger pump sleeve (4), of the plunger pump plunger, an annular groove is formed in the middle of the plunger pump plunger, the annular groove is communicated with the second oil duct, and an oil inlet is communicated to a second central mounting hole of the plunger pump sleeve (4) through the annular groove and the second oil duct; and the plunger pump spring is installed and connected between the plunger pump plunger and the plunger pump sleeve (4), and the plunger pump plunger is tightly pressed and plugged in the second oil channel of the plunger pump plunger under the action of the plunger pump spring.
2. The ESC plunger pump structure of claim 1, wherein: the plunger pump sleeve (4) is in interference connection with the inner wall of the large inner cavity of the plunger pump shell.
3. The ESC plunger pump structure of claim 1, wherein: the vein eliminating spring (2) is in clearance fit with the hole wall of the central blind hole of the plunger pump precursor (1).
4. The ESC plunger pump structure of claim 1, wherein: the pulse eliminating spring (2) is in interference fit with the pulse eliminating plunger assembly (3).
5. The ESC plunger pump structure of claim 1, wherein: the pulse-eliminating plunger (32) is hermetically connected with the hole wall of the central blind hole of the plunger pump precursor (1) through a sealing ring (31).
6. The ESC plunger pump structure of claim 1, wherein: the plunger of the plunger pump is hermetically connected with the inner wall of the small inner cavity of the plunger pump shell through a sealing ring.
7. The ESC plunger pump structure of claim 1, wherein: the pulse eliminating spring (2) and the pulse eliminating plunger component are integrally preformed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920879542.9U CN210502645U (en) | 2019-06-12 | 2019-06-12 | Novel ESC plunger pump structure of automotive electronics stable system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920879542.9U CN210502645U (en) | 2019-06-12 | 2019-06-12 | Novel ESC plunger pump structure of automotive electronics stable system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210502645U true CN210502645U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920879542.9U Withdrawn - After Issue CN210502645U (en) | 2019-06-12 | 2019-06-12 | Novel ESC plunger pump structure of automotive electronics stable system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210502645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182191A (en) * | 2019-06-12 | 2019-08-30 | 浙江亚太机电股份有限公司 | New automobile electric stabilizing system ESC plunger pump structure |
| CN115143096A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Plunger pump for automotive electronics stable control system |
-
2019
- 2019-06-12 CN CN201920879542.9U patent/CN210502645U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182191A (en) * | 2019-06-12 | 2019-08-30 | 浙江亚太机电股份有限公司 | New automobile electric stabilizing system ESC plunger pump structure |
| CN110182191B (en) * | 2019-06-12 | 2023-10-13 | 浙江亚太机电股份有限公司 | Novel ESC plunger pump structure of automobile electronic stabilization system |
| CN115143096A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Plunger pump for automotive electronics stable control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200512 Effective date of abandoning: 20231013 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200512 Effective date of abandoning: 20231013 |